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Pratyush Desai 2022-04-24 22:37:00 +05:30
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GPG Key ID: DBA5BB7505946FAD
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cmph-2.0.2/AUTHORS Normal file
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Davi de Castro Reis davi@users.sourceforge.net
Djamel Belazzougui db8192@users.sourceforge.net
Fabiano Cupertino Botelho fc_botelho@users.sourceforge.net
Nivio Ziviani nivio@dcc.ufmg.br

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cmph-2.0.2/COPYING Normal file
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The code of the cmph library is dual licensed under the LGPL version 2 and MPL
1.1 licenses. Please refer to the LGPL-2 and MPL-1.1 files in the repository
for the full description of each of the licenses.
For cxxmph, the files stringpiece.h and MurmurHash2 are covered by the BSD and MIT licenses, respectively.

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cmph-2.0.2/ChangeLog Normal file
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2005-08-08 18:34 fc_botelho
* INSTALL, examples/Makefile, examples/Makefile.in,
examples/.deps/file_adapter_ex2.Po,
examples/.deps/vector_adapter_ex1.Po, src/brz.c: [no log message]
2005-08-07 22:00 fc_botelho
* src/: brz.c, brz.h, brz_structs.h, cmph.c, cmph.h, main.c:
temporary directory passed by command line
2005-08-07 20:22 fc_botelho
* src/brz.c: stable version of BRZ
2005-08-06 22:09 fc_botelho
* src/bmz.c: no message
2005-08-06 22:02 fc_botelho
* src/bmz.c: no message
2005-08-06 21:45 fc_botelho
* src/brz.c: fastest version of BRZ
2005-08-06 17:20 fc_botelho
* src/: bmz.c, brz.c, main.c: [no log message]
2005-07-29 16:43 fc_botelho
* src/brz.c: BRZ algorithm is almost stable
2005-07-29 15:29 fc_botelho
* src/: bmz.c, brz.c, brz_structs.h, cmph_types.h: BRZ algorithm is
almost stable
2005-07-29 00:09 fc_botelho
* src/: brz.c, djb2_hash.c, djb2_hash.h, fnv_hash.c, fnv_hash.h,
hash.c, hash.h, jenkins_hash.c, jenkins_hash.h, sdbm_hash.c,
sdbm_hash.h: it was fixed more mistakes in BRZ algorithm
2005-07-28 21:00 fc_botelho
* src/: bmz.c, brz.c, cmph.c: fixed some mistakes in BRZ algorithm
2005-07-27 19:13 fc_botelho
* src/brz.c: algorithm BRZ included
2005-07-27 18:16 fc_botelho
* src/: bmz_structs.h, brz.c, brz.h, brz_structs.h: Algorithm BRZ
included
2005-07-27 18:13 fc_botelho
* src/: Makefile.am, bmz.c, chm.c, cmph.c, cmph.h, cmph_types.h:
Algorithm BRZ included
2005-07-25 19:18 fc_botelho
* README, README.t2t, scpscript: it was included an examples
directory
2005-07-25 18:26 fc_botelho
* INSTALL, Makefile.am, configure.ac, examples/Makefile,
examples/Makefile.am, examples/Makefile.in,
examples/file_adapter_ex2.c, examples/keys.txt,
examples/vector_adapter_ex1.c, examples/.deps/file_adapter_ex2.Po,
examples/.deps/vector_adapter_ex1.Po, src/cmph.c, src/cmph.h: it
was included a examples directory
2005-03-03 02:07 davi
* src/: bmz.c, chm.c, chm.h, chm_structs.h, cmph.c, cmph.h,
graph.c, graph.h, jenkins_hash.c, jenkins_hash.h, main.c (xgraph):
New f*cking cool algorithm works. Roughly implemented in chm.c
2005-03-02 20:55 davi
* src/xgraph.c (xgraph): xchmr working nice, but a bit slow
2005-03-02 02:01 davi
* src/xchmr.h: file xchmr.h was initially added on branch xgraph.
2005-03-02 02:01 davi
* src/xchmr_structs.h: file xchmr_structs.h was initially added on
branch xgraph.
2005-03-02 02:01 davi
* src/xchmr.c: file xchmr.c was initially added on branch xgraph.
2005-03-02 02:01 davi
* src/: Makefile.am, cmph.c, cmph_types.h, xchmr.c, xchmr.h,
xchmr_structs.h, xgraph.c, xgraph.h (xgraph): xchmr working fine
except for false positives on cyclic detection.
2005-03-02 00:05 davi
* src/: Makefile.am, xgraph.c, xgraph.h (xgraph): Added external
graph functionality in branch xgraph.
2005-03-02 00:05 davi
* src/xgraph.c: file xgraph.c was initially added on branch xgraph.
2005-03-02 00:05 davi
* src/xgraph.h: file xgraph.h was initially added on branch xgraph.
2005-02-28 19:53 davi
* src/chm.c: Fixed off by one bug in chm.
2005-02-17 16:20 fc_botelho
* LOGO.html, README, README.t2t, gendocs: The way of calling the
function cmph_search was fixed in the file README.t2t
2005-01-31 17:13 fc_botelho
* README.t2t: Heuristic BMZ memory consumption was updated
2005-01-31 17:09 fc_botelho
* BMZ.t2t: DJB2, SDBM, FNV and Jenkins hash link were added
2005-01-31 16:50 fc_botelho
* BMZ.t2t, CHM.t2t, COMPARISON.t2t, CONCEPTS.t2t, CONFIG.t2t,
FAQ.t2t, GPERF.t2t, LOGO.t2t, README.t2t, TABLE1.t2t, TABLE4.t2t,
TABLE5.t2t, DOC.css: BMZ documentation was finished
2005-01-28 18:12 fc_botelho
* figs/img1.png, figs/img10.png, figs/img100.png, figs/img101.png,
figs/img102.png, figs/img103.png, figs/img104.png, figs/img105.png,
figs/img106.png, figs/img107.png, figs/img108.png, figs/img109.png,
papers/bmz_tr004_04.ps, papers/bmz_wea2005.ps, papers/chm92.pdf,
figs/img11.png, figs/img110.png, figs/img111.png, figs/img112.png,
figs/img113.png, figs/img114.png, figs/img115.png, figs/img116.png,
figs/img117.png, figs/img118.png, figs/img119.png, figs/img12.png,
figs/img120.png, figs/img121.png, figs/img122.png, figs/img123.png,
figs/img124.png, figs/img125.png, figs/img126.png, figs/img127.png,
figs/img128.png, figs/img129.png, figs/img13.png, figs/img130.png,
figs/img131.png, figs/img132.png, figs/img133.png, figs/img134.png,
figs/img135.png, figs/img136.png, figs/img137.png, figs/img138.png,
figs/img139.png, figs/img14.png, figs/img140.png, figs/img141.png,
figs/img142.png, figs/img143.png, figs/img144.png, figs/img145.png,
figs/img146.png, figs/img147.png, figs/img148.png, figs/img149.png,
figs/img15.png, figs/img150.png, figs/img151.png, figs/img152.png,
figs/img153.png, figs/img154.png, figs/img155.png, figs/img156.png,
figs/img157.png, figs/img158.png, figs/img159.png, figs/img16.png,
figs/img160.png, figs/img161.png, figs/img162.png, figs/img163.png,
figs/img164.png, figs/img165.png, figs/img166.png, figs/img167.png,
figs/img168.png, figs/img169.png, figs/img17.png, figs/img170.png,
figs/img171.png, figs/img172.png, figs/img173.png, figs/img174.png,
figs/img175.png, figs/img176.png, figs/img177.png, figs/img178.png,
figs/img179.png, figs/img18.png, figs/img180.png, figs/img181.png,
figs/img182.png, figs/img183.png, figs/img184.png, figs/img185.png,
figs/img186.png, figs/img187.png, figs/img188.png, figs/img189.png,
figs/img19.png, figs/img190.png, figs/img191.png, figs/img192.png,
figs/img193.png, figs/img194.png, figs/img195.png, figs/img196.png,
figs/img197.png, figs/img198.png, figs/img199.png, figs/img2.png,
figs/img20.png, figs/img200.png, figs/img201.png, figs/img202.png,
figs/img203.png, figs/img204.png, figs/img205.png, figs/img206.png,
figs/img207.png, figs/img208.png, figs/img209.png, figs/img21.png,
figs/img210.png, figs/img211.png, figs/img212.png, figs/img213.png,
figs/img214.png, figs/img215.png, figs/img216.png, figs/img217.png,
figs/img218.png, figs/img219.png, figs/img22.png, figs/img220.png,
figs/img221.png, figs/img222.png, figs/img223.png, figs/img224.png,
figs/img225.png, figs/img226.png, figs/img227.png, figs/img228.png,
figs/img229.png, figs/img23.png, figs/img230.png, figs/img231.png,
figs/img232.png, figs/img233.png, figs/img234.png, figs/img235.png,
figs/img236.png, figs/img237.png, figs/img238.png, figs/img239.png,
figs/img24.png, figs/img240.png, figs/img241.png, figs/img242.png,
figs/img243.png, figs/img244.png, figs/img245.png, figs/img246.png,
figs/img247.png, figs/img248.png, figs/img249.png, figs/img25.png,
figs/img250.png, figs/img251.png, figs/img252.png, figs/img253.png,
figs/img26.png, figs/img27.png, figs/img28.png, figs/img29.png,
figs/img3.png, figs/img30.png, figs/img31.png, figs/img32.png,
figs/img33.png, figs/img34.png, figs/img35.png, figs/img36.png,
figs/img37.png, figs/img38.png, figs/img39.png, figs/img4.png,
figs/img40.png, figs/img41.png, figs/img42.png, figs/img43.png,
figs/img44.png, figs/img45.png, figs/img46.png, figs/img47.png,
figs/img48.png, figs/img49.png, figs/img5.png, figs/img50.png,
figs/img51.png, figs/img52.png, figs/img53.png, figs/img54.png,
figs/img55.png, figs/img56.png, figs/img57.png, figs/img58.png,
figs/img59.png, figs/img6.png, figs/img60.png, figs/img61.png,
figs/img62.png, figs/img63.png, figs/img64.png, figs/img65.png,
figs/img66.png, figs/img67.png, figs/img68.png, figs/img69.png,
figs/img7.png, figs/img70.png, figs/img71.png, figs/img72.png,
figs/img73.png, figs/img74.png, figs/img75.png, figs/img76.png,
figs/img77.png, figs/img78.png, figs/img79.png, figs/img8.png,
figs/img80.png, figs/img81.png, figs/img82.png, figs/img83.png,
figs/img84.png, figs/img85.png, figs/img86.png, figs/img87.png,
figs/img88.png, figs/img89.png, figs/img9.png, figs/img90.png,
figs/img91.png, figs/img92.png, figs/img93.png, figs/img94.png,
figs/img95.png, figs/img96.png, figs/img97.png, figs/img98.png,
figs/img99.png: Initial version
2005-01-28 18:07 fc_botelho
* BMZ.t2t, CHM.t2t, COMPARISON.t2t, CONFIG.t2t, README.t2t: It was
improved the documentation of BMZ and CHM algorithms
2005-01-27 18:07 fc_botelho
* BMZ.t2t, CHM.t2t, FAQ.t2t: history of BMZ algorithm is available
2005-01-27 14:23 fc_botelho
* AUTHORS: It was added the authors' email
2005-01-27 14:21 fc_botelho
* BMZ.t2t, CHM.t2t, COMPARISON.t2t, FAQ.t2t, FOOTER.t2t, GPERF.t2t,
README.t2t: It was added FOOTER.t2t file
2005-01-27 12:16 fc_botelho
* src/cmph_types.h: It was removed pjw and glib functions from
cmph_hash_names vector
2005-01-27 12:12 fc_botelho
* src/hash.c: It was removed pjw and glib functions from
cmph_hash_names vector
2005-01-27 11:01 davi
* FAQ.t2t, README, README.t2t, gendocs, src/bmz.c, src/bmz.h,
src/chm.c, src/chm.h, src/cmph.c, src/cmph_structs.c, src/debug.h,
src/main.c: Fix to alternate hash functions code. Removed htonl
stuff from chm algorithm. Added faq.
2005-01-27 09:14 fc_botelho
* README.t2t: It was corrected some formatting mistakes
2005-01-26 22:04 davi
* BMZ.t2t, CHM.t2t, COMPARISON.t2t, GPERF.t2t, README, README.t2t,
gendocs: Added gperf notes.
2005-01-25 19:10 fc_botelho
* INSTALL: generated in version 0.3
2005-01-25 19:09 fc_botelho
* src/: czech.c, czech.h, czech_structs.h: The czech.h,
czech_structs.h and czech.c files were removed
2005-01-25 19:06 fc_botelho
* src/: chm.c, chm.h, chm_structs.h, cmph.c, cmph_types.h, main.c,
Makefile.am: It was changed the prefix czech by chm
2005-01-25 18:50 fc_botelho
* gendocs: script to generate the documentation and the README file
2005-01-25 18:47 fc_botelho
* README: README was updated
2005-01-25 18:44 fc_botelho
* configure.ac: Version was updated
2005-01-25 18:42 fc_botelho
* src/cmph.h: Vector adapter commented
2005-01-25 18:40 fc_botelho
* CHM.t2t, CONFIG.t2t, LOGO.html: It was included the PreProc macro
through the CONFIG.t2t file and the LOGO through the LOGO.html file
2005-01-25 18:33 fc_botelho
* README.t2t, BMZ.t2t, COMPARISON.t2t, CZECH.t2t: It was included
the PreProc macro through the CONFIG.t2t file and the LOGO through
the LOGO.html file
2005-01-24 18:25 fc_botelho
* src/: bmz.c, bmz.h, cmph_structs.c, cmph_structs.h, czech.c,
cmph.c, czech.h, main.c, cmph.h: The file adpater was implemented.
2005-01-24 17:20 fc_botelho
* README.t2t: the memory consumption to create a mphf using bmz
with a heuristic was fixed.
2005-01-24 17:11 fc_botelho
* src/: cmph_types.h, main.c: The algorithms and hash functions
were put in alphabetical order
2005-01-24 16:15 fc_botelho
* BMZ.t2t, COMPARISON.t2t, CZECH.t2t, README.t2t: It was fixed some
English mistakes and It was included the files BMZ.t2t, CZECH.t2t
and COMPARISON.t2t
2005-01-21 19:19 davi
* ChangeLog, Doxyfile: Added Doxyfile.
2005-01-21 19:14 davi
* README.t2t, wingetopt.c, src/cmph.h, tests/graph_tests.c: Fixed
wingetopt.c
2005-01-21 18:44 fc_botelho
* src/Makefile.am: included files bitbool.h and bitbool.c
2005-01-21 18:42 fc_botelho
* src/: bmz.c, bmz.h, bmz_structs.h, cmph.c, cmph.h,
cmph_structs.c, cmph_structs.h, czech.c, czech.h, czech_structs.h,
djb2_hash.c, djb2_hash.h, fnv_hash.c, fnv_hash.h, graph.c, graph.h,
hash.c, hash.h, hash_state.h, jenkins_hash.c, jenkins_hash.h,
main.c, sdbm_hash.c, sdbm_hash.h, vqueue.c, vqueue.h, vstack.c,
vstack.h: Only public symbols were prefixed with cmph, and the API
was changed to agree with the initial txt2html documentation
2005-01-21 18:30 fc_botelho
* src/: bitbool.c, bitbool.h: mask to represent a boolean value
using only 1 bit
2005-01-20 10:28 davi
* ChangeLog, README, README.t2t, wingetopt.h, src/main.c: Added
initial txt2tags documentation.
2005-01-19 10:40 davi
* acinclude.m4, configure.ac: Added macros for large file support.
2005-01-18 19:06 fc_botelho
* src/: bmz.c, bmz.h, bmz_structs.h, cmph.c, cmph.h,
cmph_structs.c, cmph_structs.h, cmph_types.h, czech.c, czech.h,
czech_structs.h, djb2_hash.c, djb2_hash.h, fnv_hash.c, fnv_hash.h,
graph.c, graph.h, hash.c, hash.h, hash_state.h, jenkins_hash.c,
jenkins_hash.h, main.c, sdbm_hash.c, sdbm_hash.h, vqueue.c,
vqueue.h, vstack.c, vstack.h: version with cmph prefix
2005-01-18 15:10 davi
* ChangeLog, cmph.vcproj, cmphapp.vcproj, wingetopt.c, wingetopt.h:
Added missing files.
2005-01-18 14:25 fc_botelho
* aclocal.m4: initial version
2005-01-18 14:16 fc_botelho
* aclocal.m4: initial version
2005-01-18 13:58 fc_botelho
* src/czech.c: using bit mask to represent boolean values
2005-01-18 13:56 fc_botelho
* src/czech.c: no message
2005-01-18 10:18 davi
* COPYING, INSTALL, src/Makefile.am, src/bmz.c, src/bmz.h,
src/cmph.c, src/cmph.h, src/cmph_structs.c, src/cmph_structs.h,
src/czech.c, src/czech.h, src/debug.h, src/djb2_hash.c,
src/graph.c, src/graph.h, src/hash.c, src/jenkins_hash.c,
src/main.c, src/sdbm_hash.c, src/vqueue.c: Fixed a lot of warnings.
Added visual studio project. Make needed changes to work with
windows.
2005-01-17 16:01 fc_botelho
* src/main.c: stable version
2005-01-17 15:58 fc_botelho
* src/: bmz.c, cmph.c, cmph.h, graph.c: stable version
2005-01-13 21:56 davi
* src/czech.c: Better error handling in czech.c.
2005-01-05 18:45 fc_botelho
* src/cmph_structs.c: included option -k to specify the number of
keys to use
2005-01-05 17:48 fc_botelho
* src/: cmph.c, main.c: included option -k to specify the number of
keys to use
2005-01-03 19:38 fc_botelho
* src/bmz.c: using less memory
2005-01-03 18:47 fc_botelho
* src/: bmz.c, graph.c: using less space to store the used_edges
and critical_nodes arrays
2004-12-23 11:16 davi
* INSTALL, COPYING, AUTHORS, ChangeLog, Makefile.am, NEWS, README,
cmph.spec, configure.ac, src/graph.c, tests/Makefile.am,
tests/graph_tests.c, src/bmz.c, src/cmph_types.h,
src/czech_structs.h, src/hash_state.h, src/jenkins_hash.c,
src/bmz_structs.h, src/cmph.c, src/cmph.h, src/cmph_structs.h,
src/czech.c, src/debug.h, src/djb2_hash.c, src/djb2_hash.h,
src/fnv_hash.c, src/fnv_hash.h, src/graph.h, src/hash.c,
src/hash.h, src/jenkins_hash.h, src/sdbm_hash.c, src/vstack.h,
src/Makefile.am, src/bmz.h, src/cmph_structs.c, src/czech.h,
src/main.c, src/sdbm_hash.h, src/vqueue.c, src/vqueue.h,
src/vstack.c: Initial release.
2004-12-23 11:16 davi
* INSTALL, COPYING, AUTHORS, ChangeLog, Makefile.am, NEWS, README,
cmph.spec, configure.ac, src/graph.c, tests/Makefile.am,
tests/graph_tests.c, src/bmz.c, src/cmph_types.h,
src/czech_structs.h, src/hash_state.h, src/jenkins_hash.c,
src/bmz_structs.h, src/cmph.c, src/cmph.h, src/cmph_structs.h,
src/czech.c, src/debug.h, src/djb2_hash.c, src/djb2_hash.h,
src/fnv_hash.c, src/fnv_hash.h, src/graph.h, src/hash.c,
src/hash.h, src/jenkins_hash.h, src/sdbm_hash.c, src/vstack.h,
src/Makefile.am, src/bmz.h, src/cmph_structs.c, src/czech.h,
src/main.c, src/sdbm_hash.h, src/vqueue.c, src/vqueue.h,
src/vstack.c: Initial revision

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cmph-2.0.2/INSTALL Normal file
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Installation Instructions
*************************
Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software
Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. This file is offered as-is,
without warranty of any kind.
Basic Installation
==================
Briefly, the shell command './configure && make && make install'
should configure, build, and install this package. The following
more-detailed instructions are generic; see the 'README' file for
instructions specific to this package. Some packages provide this
'INSTALL' file but do not implement all of the features documented
below. The lack of an optional feature in a given package is not
necessarily a bug. More recommendations for GNU packages can be found
in *note Makefile Conventions: (standards)Makefile Conventions.
The 'configure' shell script attempts to guess correct values for
various system-dependent variables used during compilation. It uses
those values to create a 'Makefile' in each directory of the package.
It may also create one or more '.h' files containing system-dependent
definitions. Finally, it creates a shell script 'config.status' that
you can run in the future to recreate the current configuration, and a
file 'config.log' containing compiler output (useful mainly for
debugging 'configure').
It can also use an optional file (typically called 'config.cache' and
enabled with '--cache-file=config.cache' or simply '-C') that saves the
results of its tests to speed up reconfiguring. Caching is disabled by
default to prevent problems with accidental use of stale cache files.
If you need to do unusual things to compile the package, please try
to figure out how 'configure' could check whether to do them, and mail
diffs or instructions to the address given in the 'README' so they can
be considered for the next release. If you are using the cache, and at
some point 'config.cache' contains results you don't want to keep, you
may remove or edit it.
The file 'configure.ac' (or 'configure.in') is used to create
'configure' by a program called 'autoconf'. You need 'configure.ac' if
you want to change it or regenerate 'configure' using a newer version of
'autoconf'.
The simplest way to compile this package is:
1. 'cd' to the directory containing the package's source code and type
'./configure' to configure the package for your system.
Running 'configure' might take a while. While running, it prints
some messages telling which features it is checking for.
2. Type 'make' to compile the package.
3. Optionally, type 'make check' to run any self-tests that come with
the package, generally using the just-built uninstalled binaries.
4. Type 'make install' to install the programs and any data files and
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CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
'configure' Invocation
======================
'configure' recognizes the following options to control how it
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'--help'
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Print a summary of all of the options to 'configure', and exit.
'--help=short'
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Print a summary of the options unique to this package's
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Print the version of Autoconf used to generate the 'configure'
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Enable the cache: use and save the results of the tests in FILE,
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Alias for '--cache-file=config.cache'.
'--quiet'
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Do not print messages saying which checks are being made. To
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'--srcdir=DIR'
Look for the package's source code in directory DIR. Usually
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Use DIR as the installation prefix. *note Installation Names:: for
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'--no-create'
'-n'
Run the configure checks, but stop before creating any output
files.
'configure' also accepts some other, not widely useful, options. Run
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Most components of the "acl" package are licensed under
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below.
Some components (as annotated in the source) are licensed
under Version 2 of the GNU General Public License (see COPYING).
----------------------------------------------------------------------
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system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
12. If the distribution and/or use of the Library is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Library under this License may add
an explicit geographical distribution limitation excluding those countries,
so that distribution is permitted only in or among countries not thus
excluded. In such case, this License incorporates the limitation as if
written in the body of this License.
13. The Free Software Foundation may publish revised and/or new
versions of the Lesser General Public License from time to time.
Such new versions will be similar in spirit to the present version,
but may differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Library
specifies a version number of this License which applies to it and
"any later version", you have the option of following the terms and
conditions either of that version or of any later version published by
the Free Software Foundation. If the Library does not specify a
license version number, you may choose any version ever published by
the Free Software Foundation.
14. If you wish to incorporate parts of the Library into other free
programs whose distribution conditions are incompatible with these,
write to the author to ask for permission. For software which is
copyrighted by the Free Software Foundation, write to the Free
Software Foundation; we sometimes make exceptions for this. Our
decision will be guided by the two goals of preserving the free status
of all derivatives of our free software and of promoting the sharing
and reuse of software generally.
NO WARRANTY
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Libraries
If you develop a new library, and you want it to be of the greatest
possible use to the public, we recommend making it free software that
everyone can redistribute and change. You can do so by permitting
redistribution under these terms (or, alternatively, under the terms of the
ordinary General Public License).
To apply these terms, attach the following notices to the library. It is
safest to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.
<one line to give the library's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the library, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
<signature of Ty Coon>, 1 April 1990
Ty Coon, President of Vice
That's all there is to it!

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MOZILLA PUBLIC LICENSE
Version 1.1
---------------
1. Definitions.
1.0.1. "Commercial Use" means distribution or otherwise making the
Covered Code available to a third party.
1.1. "Contributor" means each entity that creates or contributes to
the creation of Modifications.
1.2. "Contributor Version" means the combination of the Original
Code, prior Modifications used by a Contributor, and the Modifications
made by that particular Contributor.
1.3. "Covered Code" means the Original Code or Modifications or the
combination of the Original Code and Modifications, in each case
including portions thereof.
1.4. "Electronic Distribution Mechanism" means a mechanism generally
accepted in the software development community for the electronic
transfer of data.
1.5. "Executable" means Covered Code in any form other than Source
Code.
1.6. "Initial Developer" means the individual or entity identified
as the Initial Developer in the Source Code notice required by Exhibit
A.
1.7. "Larger Work" means a work which combines Covered Code or
portions thereof with code not governed by the terms of this License.
1.8. "License" means this document.
1.8.1. "Licensable" means having the right to grant, to the maximum
extent possible, whether at the time of the initial grant or
subsequently acquired, any and all of the rights conveyed herein.
1.9. "Modifications" means any addition to or deletion from the
substance or structure of either the Original Code or any previous
Modifications. When Covered Code is released as a series of files, a
Modification is:
A. Any addition to or deletion from the contents of a file
containing Original Code or previous Modifications.
B. Any new file that contains any part of the Original Code or
previous Modifications.
1.10. "Original Code" means Source Code of computer software code
which is described in the Source Code notice required by Exhibit A as
Original Code, and which, at the time of its release under this
License is not already Covered Code governed by this License.
1.10.1. "Patent Claims" means any patent claim(s), now owned or
hereafter acquired, including without limitation, method, process,
and apparatus claims, in any patent Licensable by grantor.
1.11. "Source Code" means the preferred form of the Covered Code for
making modifications to it, including all modules it contains, plus
any associated interface definition files, scripts used to control
compilation and installation of an Executable, or source code
differential comparisons against either the Original Code or another
well known, available Covered Code of the Contributor's choice. The
Source Code can be in a compressed or archival form, provided the
appropriate decompression or de-archiving software is widely available
for no charge.
1.12. "You" (or "Your") means an individual or a legal entity
exercising rights under, and complying with all of the terms of, this
License or a future version of this License issued under Section 6.1.
For legal entities, "You" includes any entity which controls, is
controlled by, or is under common control with You. For purposes of
this definition, "control" means (a) the power, direct or indirect,
to cause the direction or management of such entity, whether by
contract or otherwise, or (b) ownership of more than fifty percent
(50%) of the outstanding shares or beneficial ownership of such
entity.
2. Source Code License.
2.1. The Initial Developer Grant.
The Initial Developer hereby grants You a world-wide, royalty-free,
non-exclusive license, subject to third party intellectual property
claims:
(a) under intellectual property rights (other than patent or
trademark) Licensable by Initial Developer to use, reproduce,
modify, display, perform, sublicense and distribute the Original
Code (or portions thereof) with or without Modifications, and/or
as part of a Larger Work; and
(b) under Patents Claims infringed by the making, using or
selling of Original Code, to make, have made, use, practice,
sell, and offer for sale, and/or otherwise dispose of the
Original Code (or portions thereof).
(c) the licenses granted in this Section 2.1(a) and (b) are
effective on the date Initial Developer first distributes
Original Code under the terms of this License.
(d) Notwithstanding Section 2.1(b) above, no patent license is
granted: 1) for code that You delete from the Original Code; 2)
separate from the Original Code; or 3) for infringements caused
by: i) the modification of the Original Code or ii) the
combination of the Original Code with other software or devices.
2.2. Contributor Grant.
Subject to third party intellectual property claims, each Contributor
hereby grants You a world-wide, royalty-free, non-exclusive license
(a) under intellectual property rights (other than patent or
trademark) Licensable by Contributor, to use, reproduce, modify,
display, perform, sublicense and distribute the Modifications
created by such Contributor (or portions thereof) either on an
unmodified basis, with other Modifications, as Covered Code
and/or as part of a Larger Work; and
(b) under Patent Claims infringed by the making, using, or
selling of Modifications made by that Contributor either alone
and/or in combination with its Contributor Version (or portions
of such combination), to make, use, sell, offer for sale, have
made, and/or otherwise dispose of: 1) Modifications made by that
Contributor (or portions thereof); and 2) the combination of
Modifications made by that Contributor with its Contributor
Version (or portions of such combination).
(c) the licenses granted in Sections 2.2(a) and 2.2(b) are
effective on the date Contributor first makes Commercial Use of
the Covered Code.
(d) Notwithstanding Section 2.2(b) above, no patent license is
granted: 1) for any code that Contributor has deleted from the
Contributor Version; 2) separate from the Contributor Version;
3) for infringements caused by: i) third party modifications of
Contributor Version or ii) the combination of Modifications made
by that Contributor with other software (except as part of the
Contributor Version) or other devices; or 4) under Patent Claims
infringed by Covered Code in the absence of Modifications made by
that Contributor.
3. Distribution Obligations.
3.1. Application of License.
The Modifications which You create or to which You contribute are
governed by the terms of this License, including without limitation
Section 2.2. The Source Code version of Covered Code may be
distributed only under the terms of this License or a future version
of this License released under Section 6.1, and You must include a
copy of this License with every copy of the Source Code You
distribute. You may not offer or impose any terms on any Source Code
version that alters or restricts the applicable version of this
License or the recipients' rights hereunder. However, You may include
an additional document offering the additional rights described in
Section 3.5.
3.2. Availability of Source Code.
Any Modification which You create or to which You contribute must be
made available in Source Code form under the terms of this License
either on the same media as an Executable version or via an accepted
Electronic Distribution Mechanism to anyone to whom you made an
Executable version available; and if made available via Electronic
Distribution Mechanism, must remain available for at least twelve (12)
months after the date it initially became available, or at least six
(6) months after a subsequent version of that particular Modification
has been made available to such recipients. You are responsible for
ensuring that the Source Code version remains available even if the
Electronic Distribution Mechanism is maintained by a third party.
3.3. Description of Modifications.
You must cause all Covered Code to which You contribute to contain a
file documenting the changes You made to create that Covered Code and
the date of any change. You must include a prominent statement that
the Modification is derived, directly or indirectly, from Original
Code provided by the Initial Developer and including the name of the
Initial Developer in (a) the Source Code, and (b) in any notice in an
Executable version or related documentation in which You describe the
origin or ownership of the Covered Code.
3.4. Intellectual Property Matters
(a) Third Party Claims.
If Contributor has knowledge that a license under a third party's
intellectual property rights is required to exercise the rights
granted by such Contributor under Sections 2.1 or 2.2,
Contributor must include a text file with the Source Code
distribution titled "LEGAL" which describes the claim and the
party making the claim in sufficient detail that a recipient will
know whom to contact. If Contributor obtains such knowledge after
the Modification is made available as described in Section 3.2,
Contributor shall promptly modify the LEGAL file in all copies
Contributor makes available thereafter and shall take other steps
(such as notifying appropriate mailing lists or newsgroups)
reasonably calculated to inform those who received the Covered
Code that new knowledge has been obtained.
(b) Contributor APIs.
If Contributor's Modifications include an application programming
interface and Contributor has knowledge of patent licenses which
are reasonably necessary to implement that API, Contributor must
also include this information in the LEGAL file.
(c) Representations.
Contributor represents that, except as disclosed pursuant to
Section 3.4(a) above, Contributor believes that Contributor's
Modifications are Contributor's original creation(s) and/or
Contributor has sufficient rights to grant the rights conveyed by
this License.
3.5. Required Notices.
You must duplicate the notice in Exhibit A in each file of the Source
Code. If it is not possible to put such notice in a particular Source
Code file due to its structure, then You must include such notice in a
location (such as a relevant directory) where a user would be likely
to look for such a notice. If You created one or more Modification(s)
You may add your name as a Contributor to the notice described in
Exhibit A. You must also duplicate this License in any documentation
for the Source Code where You describe recipients' rights or ownership
rights relating to Covered Code. You may choose to offer, and to
charge a fee for, warranty, support, indemnity or liability
obligations to one or more recipients of Covered Code. However, You
may do so only on Your own behalf, and not on behalf of the Initial
Developer or any Contributor. You must make it absolutely clear than
any such warranty, support, indemnity or liability obligation is
offered by You alone, and You hereby agree to indemnify the Initial
Developer and every Contributor for any liability incurred by the
Initial Developer or such Contributor as a result of warranty,
support, indemnity or liability terms You offer.
3.6. Distribution of Executable Versions.
You may distribute Covered Code in Executable form only if the
requirements of Section 3.1-3.5 have been met for that Covered Code,
and if You include a notice stating that the Source Code version of
the Covered Code is available under the terms of this License,
including a description of how and where You have fulfilled the
obligations of Section 3.2. The notice must be conspicuously included
in any notice in an Executable version, related documentation or
collateral in which You describe recipients' rights relating to the
Covered Code. You may distribute the Executable version of Covered
Code or ownership rights under a license of Your choice, which may
contain terms different from this License, provided that You are in
compliance with the terms of this License and that the license for the
Executable version does not attempt to limit or alter the recipient's
rights in the Source Code version from the rights set forth in this
License. If You distribute the Executable version under a different
license You must make it absolutely clear that any terms which differ
from this License are offered by You alone, not by the Initial
Developer or any Contributor. You hereby agree to indemnify the
Initial Developer and every Contributor for any liability incurred by
the Initial Developer or such Contributor as a result of any such
terms You offer.
3.7. Larger Works.
You may create a Larger Work by combining Covered Code with other code
not governed by the terms of this License and distribute the Larger
Work as a single product. In such a case, You must make sure the
requirements of this License are fulfilled for the Covered Code.
4. Inability to Comply Due to Statute or Regulation.
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Code due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description
must be included in the LEGAL file described in Section 3.4 and must
be included with all distributions of the Source Code. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Application of this License.
This License applies to code to which the Initial Developer has
attached the notice in Exhibit A and to related Covered Code.
6. Versions of the License.
6.1. New Versions.
Netscape Communications Corporation ("Netscape") may publish revised
and/or new versions of the License from time to time. Each version
will be given a distinguishing version number.
6.2. Effect of New Versions.
Once Covered Code has been published under a particular version of the
License, You may always continue to use it under the terms of that
version. You may also choose to use such Covered Code under the terms
of any subsequent version of the License published by Netscape. No one
other than Netscape has the right to modify the terms applicable to
Covered Code created under this License.
6.3. Derivative Works.
If You create or use a modified version of this License (which you may
only do in order to apply it to code which is not already Covered Code
governed by this License), You must (a) rename Your license so that
the phrases "Mozilla", "MOZILLAPL", "MOZPL", "Netscape",
"MPL", "NPL" or any confusingly similar phrase do not appear in your
license (except to note that your license differs from this License)
and (b) otherwise make it clear that Your version of the license
contains terms which differ from the Mozilla Public License and
Netscape Public License. (Filling in the name of the Initial
Developer, Original Code or Contributor in the notice described in
Exhibit A shall not of themselves be deemed to be modifications of
this License.)
7. DISCLAIMER OF WARRANTY.
COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
WITHOUT LIMITATION, WARRANTIES THAT THE COVERED CODE IS FREE OF
DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING.
THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED CODE
IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT,
YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE
COST OF ANY NECESSARY SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER
OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. NO USE OF
ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
8. TERMINATION.
8.1. This License and the rights granted hereunder will terminate
automatically if You fail to comply with terms herein and fail to cure
such breach within 30 days of becoming aware of the breach. All
sublicenses to the Covered Code which are properly granted shall
survive any termination of this License. Provisions which, by their
nature, must remain in effect beyond the termination of this License
shall survive.
8.2. If You initiate litigation by asserting a patent infringement
claim (excluding declatory judgment actions) against Initial Developer
or a Contributor (the Initial Developer or Contributor against whom
You file such action is referred to as "Participant") alleging that:
(a) such Participant's Contributor Version directly or indirectly
infringes any patent, then any and all rights granted by such
Participant to You under Sections 2.1 and/or 2.2 of this License
shall, upon 60 days notice from Participant terminate prospectively,
unless if within 60 days after receipt of notice You either: (i)
agree in writing to pay Participant a mutually agreeable reasonable
royalty for Your past and future use of Modifications made by such
Participant, or (ii) withdraw Your litigation claim with respect to
the Contributor Version against such Participant. If within 60 days
of notice, a reasonable royalty and payment arrangement are not
mutually agreed upon in writing by the parties or the litigation claim
is not withdrawn, the rights granted by Participant to You under
Sections 2.1 and/or 2.2 automatically terminate at the expiration of
the 60 day notice period specified above.
(b) any software, hardware, or device, other than such Participant's
Contributor Version, directly or indirectly infringes any patent, then
any rights granted to You by such Participant under Sections 2.1(b)
and 2.2(b) are revoked effective as of the date You first made, used,
sold, distributed, or had made, Modifications made by that
Participant.
8.3. If You assert a patent infringement claim against Participant
alleging that such Participant's Contributor Version directly or
indirectly infringes any patent where such claim is resolved (such as
by license or settlement) prior to the initiation of patent
infringement litigation, then the reasonable value of the licenses
granted by such Participant under Sections 2.1 or 2.2 shall be taken
into account in determining the amount or value of any payment or
license.
8.4. In the event of termination under Sections 8.1 or 8.2 above,
all end user license agreements (excluding distributors and resellers)
which have been validly granted by You or any distributor hereunder
prior to termination shall survive termination.
9. LIMITATION OF LIABILITY.
UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT
(INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE INITIAL
DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED CODE,
OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY PERSON FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY
CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL,
WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER
COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN
INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF
LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY
RESULTING FROM SUCH PARTY'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW
PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO
THIS EXCLUSION AND LIMITATION MAY NOT APPLY TO YOU.
10. U.S. GOVERNMENT END USERS.
The Covered Code is a "commercial item," as that term is defined in
48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial computer
software" and "commercial computer software documentation," as such
terms are used in 48 C.F.R. 12.212 (Sept. 1995). Consistent with 48
C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (June 1995),
all U.S. Government End Users acquire Covered Code with only those
rights set forth herein.
11. MISCELLANEOUS.
This License represents the complete agreement concerning subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. This License shall be governed by
California law provisions (except to the extent applicable law, if
any, provides otherwise), excluding its conflict-of-law provisions.
With respect to disputes in which at least one party is a citizen of,
or an entity chartered or registered to do business in the United
States of America, any litigation relating to this License shall be
subject to the jurisdiction of the Federal Courts of the Northern
District of California, with venue lying in Santa Clara County,
California, with the losing party responsible for costs, including
without limitation, court costs and reasonable attorneys' fees and
expenses. The application of the United Nations Convention on
Contracts for the International Sale of Goods is expressly excluded.
Any law or regulation which provides that the language of a contract
shall be construed against the drafter shall not apply to this
License.
12. RESPONSIBILITY FOR CLAIMS.
As between Initial Developer and the Contributors, each party is
responsible for claims and damages arising, directly or indirectly,
out of its utilization of rights under this License and You agree to
work with Initial Developer and Contributors to distribute such
responsibility on an equitable basis. Nothing herein is intended or
shall be deemed to constitute any admission of liability.
13. MULTIPLE-LICENSED CODE.
Initial Developer may designate portions of the Covered Code as
"Multiple-Licensed". "Multiple-Licensed" means that the Initial
Developer permits you to utilize portions of the Covered Code under
Your choice of the NPL or the alternative licenses, if any, specified
by the Initial Developer in the file described in Exhibit A.
EXHIBIT A -Mozilla Public License.
``The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in
compliance with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
License for the specific language governing rights and limitations
under the License.
The Original Code is ______________________________________.
The Initial Developer of the Original Code is ________________________.
Portions created by ______________________ are Copyright (C) ______
_______________________. All Rights Reserved.
Contributor(s): ______________________________________.
Alternatively, the contents of this file may be used under the terms
of the _____ license (the "[___] License"), in which case the
provisions of [______] License are applicable instead of those
above. If you wish to allow use of your version of this file only
under the terms of the [____] License and not to allow others to use
your version of this file under the MPL, indicate your decision by
deleting the provisions above and replace them with the notice and
other provisions required by the [___] License. If you do not delete
the provisions above, a recipient may use your version of this file
under either the MPL or the [___] License."
[NOTE: The text of this Exhibit A may differ slightly from the text of
the notices in the Source Code files of the Original Code. You should
use the text of this Exhibit A rather than the text found in the
Original Code Source Code for Your Modifications.]

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SUBDIRS = src tests examples man $(CXXMPH)
EXTRA_DIST = cmph.spec configure.ac cmph.pc.in cxxmph.pc.in LGPL-2 MPL-1.1
pkgconfig_DATA = cmph.pc
if USE_CXXMPH
pkgconfig_DATA += cxxmph.pc
endif
ACLOCAL_AMFLAGS="-Im4"
pkgconfigdir = $(libdir)/pkgconfig

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# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
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am__make_running_with_option = \
case $${target_option-} in \
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"target option '$${target_option-}' specified" >&2; \
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has_opt=no; \
sane_makeflags=$$MAKEFLAGS; \
if $(am__is_gnu_make); then \
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CMPH - C Minimal Perfect Hashing Library
-------------------------------------------------------------------
Motivation
==========
A perfect hash function maps a static set of n keys into a set of m integer numbers without collisions, where m is greater than or equal to n. If m is equal to n, the function is called minimal.
Minimal perfect hash functions (concepts.html) are widely used for memory efficient storage and fast retrieval of items from static sets, such as words in natural languages, reserved words in programming languages or interactive systems, universal resource locations (URLs) in Web search engines, or item sets in data mining techniques. Therefore, there are applications for minimal perfect hash functions in information retrieval systems, database systems, language translation systems, electronic commerce systems, compilers, operating systems, among others.
The use of minimal perfect hash functions is, until now, restricted to scenarios where the set of keys being hashed is small, because of the limitations of current algorithms. But in many cases, to deal with huge set of keys is crucial. So, this project gives to the free software community an API that will work with sets in the order of billion of keys.
Probably, the most interesting application for minimal perfect hash functions is its use as an indexing structure for databases. The most popular data structure used as an indexing structure in databases is the B+ tree. In fact, the B+ tree is very used for dynamic applications with frequent insertions and deletions of records. However, for applications with sporadic modifications and a huge number of queries the B+ tree is not the best option, because practical deployments of this structure are extremely complex, and perform poorly with very large sets of keys such as those required for the new frontiers database applications (http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=299).
For example, in the information retrieval field, the work with huge collections is a daily task. The simple assignment of ids to web pages of a collection can be a challenging task. While traditional databases simply cannot handle more traffic once the working set of web page urls does not fit in main memory anymore, minimal perfect hash functions can easily scale to hundred of millions of entries, using stock hardware.
As there are lots of applications for minimal perfect hash functions, it is important to implement memory and time efficient algorithms for constructing such functions. The lack of similar libraries in the free software world has been the main motivation to create the C Minimal Perfect Hashing Library (gperf is a bit different (gperf.html), since it was conceived to create very fast perfect hash functions for small sets of keys and CMPH Library was conceived to create minimal perfect hash functions for very large sets of keys). C Minimal Perfect Hashing Library is a portable LGPLed library to generate and to work with very efficient minimal perfect hash functions.
-------------------------------------------------------------------
Description
===========
The CMPH Library encapsulates the newest and more efficient algorithms in an easy-to-use, production-quality, fast API. The library was designed to work with big entries that cannot fit in the main memory. It has been used successfully for constructing minimal perfect hash functions for sets with more than 100 million of keys, and we intend to expand this number to the order of billion of keys. Although there is a lack of similar libraries, we can point out some of the distinguishable features of the CMPH Library:
- Fast.
- Space-efficient with main memory usage carefully documented.
- The best modern algorithms are available (or at least scheduled for implementation :-)).
- Works with in-disk key sets through of using the adapter pattern.
- Serialization of hash functions.
- Portable C code (currently works on GNU/Linux and WIN32 and is reported to work in OpenBSD and Solaris).
- Object oriented implementation.
- Easily extensible.
- Well encapsulated API aiming binary compatibility through releases.
- Free Software.
----------------------------------------
Supported Algorithms
====================
- CHD Algorithm:
- It is the fastest algorithm to build PHFs and MPHFs in linear time.
- It generates the most compact PHFs and MPHFs we know of.
- It can generate PHFs with a load factor up to 99 %.
- It can be used to generate t-perfect hash functions. A t-perfect hash function allows at most t collisions in a given bin. It is a well-known fact that modern memories are organized as blocks which constitute transfer unit. Example of such blocks are cache lines for internal memory or sectors for hard disks. Thus, it can be very useful for devices that carry out I/O operations in blocks.
- It is a two level scheme. It uses a first level hash function to split the key set in buckets of average size determined by a parameter b in the range [1,32]. In the second level it uses displacement values to resolve the collisions that have given rise to the buckets.
- It can generate MPHFs that can be stored in approximately 2.07 bits per key.
- For a load factor equal to the maximum one that is achieved by the BDZ algorithm (81 %), the resulting PHFs are stored in approximately 1.40 bits per key.
- BDZ Algorithm:
- It is very simple and efficient. It outperforms all the ones below.
- It constructs both PHFs and MPHFs in linear time.
- The maximum load factor one can achieve for a PHF is 1/1.23.
- It is based on acyclic random 3-graphs. A 3-graph is a generalization of a graph where each edge connects 3 vertices instead of only 2.
- The resulting MPHFs are not order preserving.
- The resulting MPHFs can be stored in only (2 + x)cn bits, where c should be larger than or equal to 1.23 and x is a constant larger than 0 (actually, x = 1/b and b is a parameter that should be larger than 2). For c = 1.23 and b = 8, the resulting functions are stored in approximately 2.6 bits per key.
- For its maximum load factor (81 %), the resulting PHFs are stored in approximately 1.95 bits per key.
- BMZ Algorithm:
- Construct MPHFs in linear time.
- It is based on cyclic random graphs. This makes it faster than the CHM algorithm.
- The resulting MPHFs are not order preserving.
- The resulting MPHFs are more compact than the ones generated by the CHM algorithm and can be stored in 4cn bytes, where c is in the range [0.93,1.15].
- BRZ Algorithm:
- A very fast external memory based algorithm for constructing minimal perfect hash functions for sets in the order of billions of keys.
- It works in linear time.
- The resulting MPHFs are not order preserving.
- The resulting MPHFs can be stored using less than 8.0 bits per key.
- CHM Algorithm:
- Construct minimal MPHFs in linear time.
- It is based on acyclic random graphs
- The resulting MPHFs are order preserving.
- The resulting MPHFs are stored in 4cn bytes, where c is greater than 2.
- FCH Algorithm:
- Construct minimal perfect hash functions that require less than 4 bits per key to be stored.
- The resulting MPHFs are very compact and very efficient at evaluation time
- The algorithm is only efficient for small sets.
- It is used as internal algorithm in the BRZ algorithm to efficiently solve larger problems and even so to generate MPHFs that require approximately 4.1 bits per key to be stored. For that, you just need to set the parameters -a to brz and -c to a value larger than or equal to 2.6.
----------------------------------------
News for version 2.0
====================
Cleaned up most warnings for the c code.
Experimental C++ interface (--enable-cxxmph) implementing the BDZ algorithm in
a convenient interface, which serves as the basis
for drop-in replacements for std::unordered_map, sparsehash::sparse_hash_map
and sparsehash::dense_hash_map. Potentially faster lookup time at the expense
of insertion time. See cxxmpph/mph_map.h and cxxmph/mph_index.h for details.
News for version 1.1
====================
Fixed a bug in the chd_pc algorithm and reorganized tests.
News for version 1.0
====================
This is a bugfix only version, after which a revamp of the cmph code and
algorithms will be done.
News for version 0.9
====================
- The CHD algorithm (chd.html), which is an algorithm that can be tuned to generate MPHFs that require approximately 2.07 bits per key to be stored. The algorithm outperforms the BDZ algorithm (bdz.html) and therefore is the fastest one available in the literature for sets that can be treated in internal memory.
- The CHD_PH algorithm (chd.html), which is an algorithm to generate PHFs with load factor up to 99 %. It is actually the CHD algorithm without the ranking step. If we set the load factor to 81 %, which is the maximum that can be obtained with the BDZ algorithm (bdz.html), the resulting functions can be stored in 1.40 bits per key. The space requirement increases with the load factor.
- All reported bugs and suggestions have been corrected and included as well.
News for version 0.8
====================
- An algorithm to generate MPHFs that require around 2.6 bits per key to be stored (bdz.html), which is referred to as BDZ algorithm. The algorithm is the fastest one available in the literature for sets that can be treated in internal memory.
- An algorithm to generate PHFs with range m = cn, for c > 1.22 (bdz.html), which is referred to as BDZ_PH algorithm. It is actually the BDZ algorithm without the ranking step. The resulting functions can be stored in 1.95 bits per key for c = 1.23 and are considerably faster than the MPHFs generated by the BDZ algorithm.
- An adapter to support a vector of struct as the source of keys has been added.
- An API to support the ability of packing a perfect hash function into a preallocated contiguous memory space. The computation of a packed function is still faster and can be easily mmapped.
- The hash functions djb2, fnv and sdbm were removed because they do not use random seeds and therefore are not useful for MPHFs algorithms.
- All reported bugs and suggestions have been corrected and included as well.
News log (newslog.html)
----------------------------------------
Examples
========
Using cmph is quite simple. Take a look.
#include <cmph.h>
#include <string.h>
// Create minimal perfect hash function from in-memory vector
int main(int argc, char **argv)
{
// Creating a filled vector
unsigned int i = 0;
const char *vector[] = {"aaaaaaaaaa", "bbbbbbbbbb", "cccccccccc", "dddddddddd", "eeeeeeeeee",
"ffffffffff", "gggggggggg", "hhhhhhhhhh", "iiiiiiiiii", "jjjjjjjjjj"};
unsigned int nkeys = 10;
FILE* mphf_fd = fopen("temp.mph", "w");
// Source of keys
cmph_io_adapter_t *source = cmph_io_vector_adapter((char **)vector, nkeys);
//Create minimal perfect hash function using the brz algorithm.
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BRZ);
cmph_config_set_mphf_fd(config, mphf_fd);
cmph_t *hash = cmph_new(config);
cmph_config_destroy(config);
cmph_dump(hash, mphf_fd);
cmph_destroy(hash);
fclose(mphf_fd);
//Find key
mphf_fd = fopen("temp.mph", "r");
hash = cmph_load(mphf_fd);
while (i < nkeys) {
const char *key = vector[i];
unsigned int id = cmph_search(hash, key, (cmph_uint32)strlen(key));
fprintf(stderr, "key:%s -- hash:%u\n", key, id);
i++;
}
//Destroy hash
cmph_destroy(hash);
cmph_io_vector_adapter_destroy(source);
fclose(mphf_fd);
return 0;
}
Download vector_adapter_ex1.c (examples/vector_adapter_ex1.c). This example does not work in versions below 0.6. You need to update the sources from GIT to make it work.
-------------------------------
#include <cmph.h>
#include <stdio.h>
#include <string.h>
// Create minimal perfect hash function from in-disk keys using BDZ algorithm
int main(int argc, char **argv)
{
//Open file with newline separated list of keys
FILE * keys_fd = fopen("keys.txt", "r");
cmph_t *hash = NULL;
if (keys_fd == NULL)
{
fprintf(stderr, "File \"keys.txt\" not found\n");
exit(1);
}
// Source of keys
cmph_io_adapter_t *source = cmph_io_nlfile_adapter(keys_fd);
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BDZ);
hash = cmph_new(config);
cmph_config_destroy(config);
//Find key
const char *key = "jjjjjjjjjj";
unsigned int id = cmph_search(hash, key, (cmph_uint32)strlen(key));
fprintf(stderr, "Id:%u\n", id);
//Destroy hash
cmph_destroy(hash);
cmph_io_nlfile_adapter_destroy(source);
fclose(keys_fd);
return 0;
}
Download file_adapter_ex2.c (examples/file_adapter_ex2.c) and keys.txt (examples/keys.txt). This example does not work in versions below 0.8. You need to update the sources from GIT to make it work.
Click here to see more examples (examples.html)
--------------------------------------
The cmph application
====================
cmph is the name of both the library and the utility
application that comes with this package. You can use the cmph
application for constructing minimal perfect hash functions from the command line.
The cmph utility
comes with a number of flags, but it is very simple to create and to query
minimal perfect hash functions:
$ # Using the chm algorithm (default one) for constructing a mphf for keys in file keys_file
$ ./cmph -g keys_file
$ # Query id of keys in the file keys_query
$ ./cmph -m keys_file.mph keys_query
The additional options let you set most of the parameters you have
available through the C API. Below you can see the full help message for the
utility.
usage: cmph [-v] [-h] [-V] [-k nkeys] [-f hash_function] [-g [-c algorithm_dependent_value][-s seed] ]
[-a algorithm] [-M memory_in_MB] [-b algorithm_dependent_value] [-t keys_per_bin] [-d tmp_dir]
[-m file.mph] keysfile
Minimum perfect hashing tool
-h print this help message
-c c value determines:
* the number of vertices in the graph for the algorithms BMZ and CHM
* the number of bits per key required in the FCH algorithm
* the load factor in the CHD_PH algorithm
-a algorithm - valid values are
* bmz
* bmz8
* chm
* brz
* fch
* bdz
* bdz_ph
* chd_ph
* chd
-f hash function (may be used multiple times) - valid values are
* jenkins
-V print version number and exit
-v increase verbosity (may be used multiple times)
-k number of keys
-g generation mode
-s random seed
-m minimum perfect hash function file
-M main memory availability (in MB) used in BRZ algorithm
-d temporary directory used in BRZ algorithm
-b the meaning of this parameter depends on the algorithm selected in the -a option:
* For BRZ it is used to make the maximal number of keys in a bucket lower than 256.
In this case its value should be an integer in the range [64,175]. Default is 128.
* For BDZ it is used to determine the size of some precomputed rank
information and its value should be an integer in the range [3,10]. Default
is 7. The larger is this value, the more compact are the resulting functions
and the slower are them at evaluation time.
* For CHD and CHD_PH it is used to set the average number of keys per bucket
and its value should be an integer in the range [1,32]. Default is 4. The
larger is this value, the slower is the construction of the functions.
This parameter has no effect for other algorithms.
-t set the number of keys per bin for a t-perfect hashing function. A t-perfect
hash function allows at most t collisions in a given bin. This parameter applies
only to the CHD and CHD_PH algorithms. Its value should be an integer in the
range [1,128]. Defaul is 1
keysfile line separated file with keys
Additional Documentation
========================
FAQ (faq.html)
Downloads
=========
Use the project page at sourceforge: http://sf.net/projects/cmph
License Stuff
=============
Code is under the LGPL and the MPL 1.1.
----------------------------------------
Enjoy!
Davi de Castro Reis (davi@users.sourceforge.net)
Djamel Belazzougui (db8192@users.sourceforge.net)
Fabiano Cupertino Botelho (fc_botelho@users.sourceforge.net)
Nivio Ziviani (nivio@dcc.ufmg.br)
Last Updated: Fri Jun 6 17:16:57 2014

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url=http://cmph.sourceforge.net/
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: cmph
Description: minimal perfect hashing library
Version: @VERSION@
Libs: -L${libdir} -lcmph
Cflags: -I${includedir}
URL: ${url}

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%define name cmph
%define version 0.4
%define release 3
Name: %{name}
Version: %{version}
Release: %{release}
Summary: C Minimal perfect hash library
Source: %{name}-%{version}.tar.gz
License: Proprietary
URL: http://www.akwan.com.br
BuildArch: i386
Group: Sitesearch
BuildRoot: %{_tmppath}/%{name}-root
%description
C Minimal perfect hash library
%prep
rm -Rf $RPM_BUILD_ROOT
rm -rf $RPM_BUILD_ROOT
%setup
mkdir $RPM_BUILD_ROOT
mkdir $RPM_BUILD_ROOT/usr
CXXFLAGS="-O2" ./configure --prefix=/usr/
%build
make
%install
DESTDIR=$RPM_BUILD_ROOT make install
%files
%defattr(755,root,root)
/
%changelog
* Tue Jun 1 2004 Davi de Castro Reis <davi@akwan.com.br>
+ Initial build

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IFS=" "" $nl"
file_conv=
# func_file_conv build_file lazy
# Convert a $build file to $host form and store it in $file
# Currently only supports Windows hosts. If the determined conversion
# type is listed in (the comma separated) LAZY, no conversion will
# take place.
func_file_conv ()
{
file=$1
case $file in
/ | /[!/]*) # absolute file, and not a UNC file
if test -z "$file_conv"; then
# lazily determine how to convert abs files
case `uname -s` in
MINGW*)
file_conv=mingw
;;
CYGWIN*)
file_conv=cygwin
;;
*)
file_conv=wine
;;
esac
fi
case $file_conv/,$2, in
*,$file_conv,*)
;;
mingw/*)
file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
;;
cygwin/*)
file=`cygpath -m "$file" || echo "$file"`
;;
wine/*)
file=`winepath -w "$file" || echo "$file"`
;;
esac
;;
esac
}
# func_cl_dashL linkdir
# Make cl look for libraries in LINKDIR
func_cl_dashL ()
{
func_file_conv "$1"
if test -z "$lib_path"; then
lib_path=$file
else
lib_path="$lib_path;$file"
fi
linker_opts="$linker_opts -LIBPATH:$file"
}
# func_cl_dashl library
# Do a library search-path lookup for cl
func_cl_dashl ()
{
lib=$1
found=no
save_IFS=$IFS
IFS=';'
for dir in $lib_path $LIB
do
IFS=$save_IFS
if $shared && test -f "$dir/$lib.dll.lib"; then
found=yes
lib=$dir/$lib.dll.lib
break
fi
if test -f "$dir/$lib.lib"; then
found=yes
lib=$dir/$lib.lib
break
fi
if test -f "$dir/lib$lib.a"; then
found=yes
lib=$dir/lib$lib.a
break
fi
done
IFS=$save_IFS
if test "$found" != yes; then
lib=$lib.lib
fi
}
# func_cl_wrapper cl arg...
# Adjust compile command to suit cl
func_cl_wrapper ()
{
# Assume a capable shell
lib_path=
shared=:
linker_opts=
for arg
do
if test -n "$eat"; then
eat=
else
case $1 in
-o)
# configure might choose to run compile as 'compile cc -o foo foo.c'.
eat=1
case $2 in
*.o | *.[oO][bB][jJ])
func_file_conv "$2"
set x "$@" -Fo"$file"
shift
;;
*)
func_file_conv "$2"
set x "$@" -Fe"$file"
shift
;;
esac
;;
-I)
eat=1
func_file_conv "$2" mingw
set x "$@" -I"$file"
shift
;;
-I*)
func_file_conv "${1#-I}" mingw
set x "$@" -I"$file"
shift
;;
-l)
eat=1
func_cl_dashl "$2"
set x "$@" "$lib"
shift
;;
-l*)
func_cl_dashl "${1#-l}"
set x "$@" "$lib"
shift
;;
-L)
eat=1
func_cl_dashL "$2"
;;
-L*)
func_cl_dashL "${1#-L}"
;;
-static)
shared=false
;;
-Wl,*)
arg=${1#-Wl,}
save_ifs="$IFS"; IFS=','
for flag in $arg; do
IFS="$save_ifs"
linker_opts="$linker_opts $flag"
done
IFS="$save_ifs"
;;
-Xlinker)
eat=1
linker_opts="$linker_opts $2"
;;
-*)
set x "$@" "$1"
shift
;;
*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
func_file_conv "$1"
set x "$@" -Tp"$file"
shift
;;
*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
func_file_conv "$1" mingw
set x "$@" "$file"
shift
;;
*)
set x "$@" "$1"
shift
;;
esac
fi
shift
done
if test -n "$linker_opts"; then
linker_opts="-link$linker_opts"
fi
exec "$@" $linker_opts
exit 1
}
eat=
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: compile [--help] [--version] PROGRAM [ARGS]
Wrapper for compilers which do not understand '-c -o'.
Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
arguments, and rename the output as expected.
If you are trying to build a whole package this is not the
right script to run: please start by reading the file 'INSTALL'.
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "compile $scriptversion"
exit $?
;;
cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
func_cl_wrapper "$@" # Doesn't return...
;;
esac
ofile=
cfile=
for arg
do
if test -n "$eat"; then
eat=
else
case $1 in
-o)
# configure might choose to run compile as 'compile cc -o foo foo.c'.
# So we strip '-o arg' only if arg is an object.
eat=1
case $2 in
*.o | *.obj)
ofile=$2
;;
*)
set x "$@" -o "$2"
shift
;;
esac
;;
*.c)
cfile=$1
set x "$@" "$1"
shift
;;
*)
set x "$@" "$1"
shift
;;
esac
fi
shift
done
if test -z "$ofile" || test -z "$cfile"; then
# If no '-o' option was seen then we might have been invoked from a
# pattern rule where we don't need one. That is ok -- this is a
# normal compilation that the losing compiler can handle. If no
# '.c' file was seen then we are probably linking. That is also
# ok.
exec "$@"
fi
# Name of file we expect compiler to create.
cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
# Create the lock directory.
# Note: use '[/\\:.-]' here to ensure that we don't use the same name
# that we are using for the .o file. Also, base the name on the expected
# object file name, since that is what matters with a parallel build.
lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
while true; do
if mkdir "$lockdir" >/dev/null 2>&1; then
break
fi
sleep 1
done
# FIXME: race condition here if user kills between mkdir and trap.
trap "rmdir '$lockdir'; exit 1" 1 2 15
# Run the compile.
"$@"
ret=$?
if test -f "$cofile"; then
test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
elif test -f "${cofile}bj"; then
test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
fi
rmdir "$lockdir"
exit $ret
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

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/* config.h.in. Generated from configure.ac by autoheader. */
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define to 1 if you have the <getopt.h> header file. */
#undef HAVE_GETOPT_H
/* Define to 1 if you have the <hopscotch_map.h> header file. */
#undef HAVE_HOPSCOTCH_MAP_H
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the `check' library (-lcheck). */
#undef HAVE_LIBCHECK
/* Define to 1 if you have the <math.h> header file. */
#undef HAVE_MATH_H
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define if g++ supports C++0x features. */
#undef HAVE_STDCXX_0X
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Define to the sub-directory where libtool stores uninstalled libraries. */
#undef LT_OBJDIR
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
/* Define to make fseeko etc. visible, on some hosts. */
#undef _LARGEFILE_SOURCE
/* Define for large files, on AIX-style hosts. */
#undef _LARGE_FILES

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cmph-2.0.2/configure.ac Normal file
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dnl Process this file with autoconf to produce a configure script.
AC_INIT([cmph], [2.0.2])
AC_CONFIG_SRCDIR([Makefile.am])
AM_INIT_AUTOMAKE
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
dnl Checks for programs.
AC_PROG_AWK
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
LT_INIT
AC_SYS_EXTRA_LARGEFILE
if test "x$ac_cv_sys_largefile_CFLAGS" = "xno" ; then
ac_cv_sys_largefile_CFLAGS=""
fi
if test "x$ac_cv_sys_largefile_LDFLAGS" = "xno" ; then
ac_cv_sys_largefile_LDFLAGS=""
fi
if test "x$ac_cv_sys_largefile_LIBS" = "xno" ; then
ac_cv_sys_largefile_LIBS=""
fi
CFLAGS="$ac_cv_sys_largefile_CFLAGS $CFLAGS"
LDFLAGS="$ac_cv_sys_largefile_LDFLAGS $LDFLAGS"
LIBS="$LIBS $ac_cv_sys_largefile_LIBS"
dnl Checks for headers
AC_CHECK_HEADERS([getopt.h math.h])
dnl Checks for libraries.
LT_LIB_M
LDFLAGS="$LIBS $LIBM $LDFLAGS"
CFLAGS="-Wall $CFLAGS"
AC_PROG_CXX
CXXFLAGS="-Wall -Wno-unused-function -DNDEBUG -O3 -fomit-frame-pointer $CXXFLAGS"
AC_ENABLE_CXXMPH
if test x$cxxmph = xtrue; then
AC_COMPILE_STDCXX_0X
if test x$ac_cv_cxx_compile_cxx0x_native = "xno"; then
if test x$ac_cv_cxx_compile_cxx11_cxx = "xyes"; then
CXXFLAGS="$CXXFLAGS -std=c++11"
elif test x$ac_cv_cxx_compile_cxx0x_cxx = "xyes"; then
CXXFLAGS="$CXXFLAGS -std=c++0x"
elif test x$ac_cv_cxx_compile_cxx0x_gxx = "xyes"; then
CXXFLAGS="$CXXFLAGS -std=gnu++0x"
else
AC_MSG_ERROR("cxxmph demands a working c++0x compiler.")
fi
fi
AC_SUBST([CXXMPH], "cxxmph")
fi
AM_CONDITIONAL([USE_CXXMPH], [test "$cxxmph" = true])
AC_ENABLE_BENCHMARKS
if test x$benchmarks = xtrue; then
AC_LANG_PUSH([C++])
AC_CHECK_HEADERS([hopscotch_map.h])
AC_LANG_POP([C++])
fi
AM_CONDITIONAL([USE_BENCHMARKS], [test "$benchmarks" = true])
# Unit tests based on the check library. Disabled by default.
# We do not use pkg-config because it is inconvenient for all developers to
# have check library installed.
AC_ARG_ENABLE(check, AS_HELP_STRING(
[--enable-check],
[Build unit tests depending on check library (default: disabled)]))
AS_IF([test "x$enable_check" = "xyes"],
[ AC_CHECK_LIB([check], [tcase_create])
AS_IF([test "$ac_cv_lib_check_tcase_create" = yes], [CHECK_LIBS="-lcheck"],
[AC_MSG_ERROR("Failed to find check library (http://check.sf.net).")])
AC_CHECK_HEADER(check.h,[],
[AC_MSG_ERROR("Failed to find check library header (http://check.sf.net).")])
])
AM_CONDITIONAL([USE_LIBCHECK], [test "$ac_cv_lib_check_tcase_create" = yes])
AC_SUBST(CHECK_LIBS)
AC_SUBST(CHECK_CFLAGS)
AC_CHECK_SPOON
AC_CONFIG_FILES([Makefile src/Makefile cxxmph/Makefile tests/Makefile examples/Makefile man/Makefile cmph.pc cxxmph.pc])
AC_OUTPUT

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cmph-2.0.2/cxxmph.pc.in Normal file
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url=http://cmph.sourceforge.net/
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: cxxmph
Description: minimal perfect hashing c++11 library
Version: @VERSION@
Libs: -L${libdir} -lcxxmph
Cflags: -std=c++0x -I${includedir}
URL: ${url}

62
cmph-2.0.2/cxxmph/Makefile.am Normal file
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TESTS = $(check_PROGRAMS)
check_PROGRAMS = seeded_hash_test mph_bits_test hollow_iterator_test mph_index_test trigraph_test
if USE_LIBCHECK
check_PROGRAMS += test_test map_tester_test mph_map_test dense_hash_map_test string_util_test
check_LTLIBRARIES = libcxxmph_test.la
endif
if USE_BENCHMARKS
noinst_PROGRAMS = bm_map # bm_index - disabled because of cmph dependency
endif
bin_PROGRAMS = cxxmph
cxxmph_includedir = $(includedir)/cxxmph/
cxxmph_include_HEADERS = mph_bits.h mph_map.h mph_index.h MurmurHash3.h trigraph.h seeded_hash.h stringpiece.h hollow_iterator.h string_util.h
noinst_LTLIBRARIES = libcxxmph_bm.la
lib_LTLIBRARIES = libcxxmph.la
libcxxmph_la_SOURCES = MurmurHash3.cpp trigraph.cc mph_bits.cc mph_index.cc benchmark.h benchmark.cc string_util.cc
libcxxmph_la_LDFLAGS = -version-info 0:0:0
libcxxmph_test_la_SOURCES = test.h test.cc
libcxxmph_test_la_LIBADD = libcxxmph.la
libcxxmph_bm_la_SOURCES = benchmark.h benchmark.cc bm_common.h bm_common.cc
libcxxmph_bm_la_LIBADD = libcxxmph.la
test_test_SOURCES = test_test.cc
test_test_LDADD = libcxxmph_test.la $(CHECK_LIBS)
mph_map_test_LDADD = libcxxmph_test.la $(CHECK_LIBS)
mph_map_test_SOURCES = mph_map_test.cc
dense_hash_map_test_LDADD = libcxxmph_test.la $(CHECK_LIBS)
dense_hash_map_test_SOURCES = dense_hash_map_test.cc
mph_index_test_LDADD = libcxxmph.la
mph_index_test_SOURCES = mph_index_test.cc
trigraph_test_LDADD = libcxxmph.la
trigraph_test_SOURCES = trigraph_test.cc
# Bad dependency, do not compile by default.
# bm_index_LDADD = libcxxmph_bm.la -lcmph
# bm_index_SOURCES = bm_index.cc
bm_map_LDADD = libcxxmph_bm.la
bm_map_SOURCES = bm_map.cc
cxxmph_LDADD = libcxxmph.la
cxxmph_SOURCES = cxxmph.cc
hollow_iterator_test_SOURCES = hollow_iterator_test.cc
seeded_hash_test_SOURCES = seeded_hash_test.cc
seeded_hash_test_LDADD = libcxxmph.la
mph_bits_test_SOURCES = mph_bits_test.cc
mph_bits_test_LDADD = libcxxmph.la
string_util_test_SOURCES = string_util_test.cc
string_util_test_LDADD = libcxxmph.la libcxxmph_test.la $(CHECK_LIBS)
map_tester_test_SOURCES = map_tester.h map_tester.cc map_tester_test.cc
map_tester_test_LDADD = libcxxmph.la libcxxmph_test.la $(CHECK_LIBS)

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cmph-2.0.2/cxxmph/MurmurHash3.cpp Normal file
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//-----------------------------------------------------------------------------
// MurmurHash3 was written by Austin Appleby, and is placed in the public
// domain. The author hereby disclaims copyright to this source code.
// Note - The x86 and x64 versions do _not_ produce the same results, as the
// algorithms are optimized for their respective platforms. You can still
// compile and run any of them on any platform, but your performance with the
// non-native version will be less than optimal.
#include "MurmurHash3.h"
//-----------------------------------------------------------------------------
// Platform-specific functions and macros
// Microsoft Visual Studio
#if defined(_MSC_VER)
#define FORCE_INLINE __forceinline
#include <stdlib.h>
#define ROTL32(x,y) _rotl(x,y)
#define ROTL64(x,y) _rotl64(x,y)
#define BIG_CONSTANT(x) (x)
// Other compilers
#else // defined(_MSC_VER)
#define FORCE_INLINE __attribute__((always_inline))
inline uint32_t rotl32 ( uint32_t x, int8_t r )
{
return (x << r) | (x >> (32 - r));
}
inline uint64_t rotl64 ( uint64_t x, int8_t r )
{
return (x << r) | (x >> (64 - r));
}
#define ROTL32(x,y) rotl32(x,y)
#define ROTL64(x,y) rotl64(x,y)
#define BIG_CONSTANT(x) (x##LLU)
#endif // !defined(_MSC_VER)
//-----------------------------------------------------------------------------
// Block read - if your platform needs to do endian-swapping or can only
// handle aligned reads, do the conversion here
/*FORCE_INLINE*/ uint32_t getblock ( const uint32_t * p, int i )
{
return p[i];
}
/*FORCE_INLINE*/ uint64_t getblock ( const uint64_t * p, int i )
{
return p[i];
}
//-----------------------------------------------------------------------------
// Finalization mix - force all bits of a hash block to avalanche
/*FORCE_INLINE*/ uint32_t fmix ( uint32_t h )
{
h ^= h >> 16;
h *= 0x85ebca6b;
h ^= h >> 13;
h *= 0xc2b2ae35;
h ^= h >> 16;
return h;
}
//----------
/*FORCE_INLINE*/ uint64_t fmix ( uint64_t k )
{
k ^= k >> 33;
k *= BIG_CONSTANT(0xff51afd7ed558ccd);
k ^= k >> 33;
k *= BIG_CONSTANT(0xc4ceb9fe1a85ec53);
k ^= k >> 33;
return k;
}
//-----------------------------------------------------------------------------
void MurmurHash3_x86_32 ( const void * key, int len,
uint32_t seed, void * out )
{
const uint8_t * data = (const uint8_t*)key;
const int nblocks = len / 4;
uint32_t h1 = seed;
uint32_t c1 = 0xcc9e2d51;
uint32_t c2 = 0x1b873593;
//----------
// body
const uint32_t * blocks = (const uint32_t *)(data + nblocks*4);
for(int i = -nblocks; i; i++)
{
uint32_t k1 = getblock(blocks,i);
k1 *= c1;
k1 = ROTL32(k1,15);
k1 *= c2;
h1 ^= k1;
h1 = ROTL32(h1,13);
h1 = h1*5+0xe6546b64;
}
//----------
// tail
const uint8_t * tail = (const uint8_t*)(data + nblocks*4);
uint32_t k1 = 0;
switch(len & 3)
{
case 3: k1 ^= tail[2] << 16;
case 2: k1 ^= tail[1] << 8;
case 1: k1 ^= tail[0];
k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
};
//----------
// finalization
h1 ^= len;
h1 = fmix(h1);
*(uint32_t*)out = h1;
}
//-----------------------------------------------------------------------------
void MurmurHash3_x86_128 ( const void * key, const int len,
uint32_t seed, void * out )
{
const uint8_t * data = (const uint8_t*)key;
const int nblocks = len / 16;
uint32_t h1 = seed;
uint32_t h2 = seed;
uint32_t h3 = seed;
uint32_t h4 = seed;
uint32_t c1 = 0x239b961b;
uint32_t c2 = 0xab0e9789;
uint32_t c3 = 0x38b34ae5;
uint32_t c4 = 0xa1e38b93;
//----------
// body
const uint32_t * blocks = (const uint32_t *)(data + nblocks*16);
for(int i = -nblocks; i; i++)
{
uint32_t k1 = getblock(blocks,i*4+0);
uint32_t k2 = getblock(blocks,i*4+1);
uint32_t k3 = getblock(blocks,i*4+2);
uint32_t k4 = getblock(blocks,i*4+3);
k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
h1 = ROTL32(h1,19); h1 += h2; h1 = h1*5+0x561ccd1b;
k2 *= c2; k2 = ROTL32(k2,16); k2 *= c3; h2 ^= k2;
h2 = ROTL32(h2,17); h2 += h3; h2 = h2*5+0x0bcaa747;
k3 *= c3; k3 = ROTL32(k3,17); k3 *= c4; h3 ^= k3;
h3 = ROTL32(h3,15); h3 += h4; h3 = h3*5+0x96cd1c35;
k4 *= c4; k4 = ROTL32(k4,18); k4 *= c1; h4 ^= k4;
h4 = ROTL32(h4,13); h4 += h1; h4 = h4*5+0x32ac3b17;
}
//----------
// tail
const uint8_t * tail = (const uint8_t*)(data + nblocks*16);
uint32_t k1 = 0;
uint32_t k2 = 0;
uint32_t k3 = 0;
uint32_t k4 = 0;
switch(len & 15)
{
case 15: k4 ^= tail[14] << 16;
case 14: k4 ^= tail[13] << 8;
case 13: k4 ^= tail[12] << 0;
k4 *= c4; k4 = ROTL32(k4,18); k4 *= c1; h4 ^= k4;
case 12: k3 ^= tail[11] << 24;
case 11: k3 ^= tail[10] << 16;
case 10: k3 ^= tail[ 9] << 8;
case 9: k3 ^= tail[ 8] << 0;
k3 *= c3; k3 = ROTL32(k3,17); k3 *= c4; h3 ^= k3;
case 8: k2 ^= tail[ 7] << 24;
case 7: k2 ^= tail[ 6] << 16;
case 6: k2 ^= tail[ 5] << 8;
case 5: k2 ^= tail[ 4] << 0;
k2 *= c2; k2 = ROTL32(k2,16); k2 *= c3; h2 ^= k2;
case 4: k1 ^= tail[ 3] << 24;
case 3: k1 ^= tail[ 2] << 16;
case 2: k1 ^= tail[ 1] << 8;
case 1: k1 ^= tail[ 0] << 0;
k1 *= c1; k1 = ROTL32(k1,15); k1 *= c2; h1 ^= k1;
};
//----------
// finalization
h1 ^= len; h2 ^= len; h3 ^= len; h4 ^= len;
h1 += h2; h1 += h3; h1 += h4;
h2 += h1; h3 += h1; h4 += h1;
h1 = fmix(h1);
h2 = fmix(h2);
h3 = fmix(h3);
h4 = fmix(h4);
h1 += h2; h1 += h3; h1 += h4;
h2 += h1; h3 += h1; h4 += h1;
((uint32_t*)out)[0] = h1;
((uint32_t*)out)[1] = h2;
((uint32_t*)out)[2] = h3;
((uint32_t*)out)[3] = h4;
}
//-----------------------------------------------------------------------------
void MurmurHash3_x64_128 ( const void * key, const int len,
const uint32_t seed, void * out )
{
const uint8_t * data = (const uint8_t*)key;
const int nblocks = len / 16;
uint64_t h1 = seed;
uint64_t h2 = seed;
uint64_t c1 = BIG_CONSTANT(0x87c37b91114253d5);
uint64_t c2 = BIG_CONSTANT(0x4cf5ad432745937f);
//----------
// body
const uint64_t * blocks = (const uint64_t *)(data);
for(int i = 0; i < nblocks; i++)
{
uint64_t k1 = getblock(blocks,i*2+0);
uint64_t k2 = getblock(blocks,i*2+1);
k1 *= c1; k1 = ROTL64(k1,31); k1 *= c2; h1 ^= k1;
h1 = ROTL64(h1,27); h1 += h2; h1 = h1*5+0x52dce729;
k2 *= c2; k2 = ROTL64(k2,33); k2 *= c1; h2 ^= k2;
h2 = ROTL64(h2,31); h2 += h1; h2 = h2*5+0x38495ab5;
}
//----------
// tail
const uint8_t * tail = (const uint8_t*)(data + nblocks*16);
uint64_t k1 = 0;
uint64_t k2 = 0;
switch(len & 15)
{
case 15: k2 ^= uint64_t(tail[14]) << 48;
case 14: k2 ^= uint64_t(tail[13]) << 40;
case 13: k2 ^= uint64_t(tail[12]) << 32;
case 12: k2 ^= uint64_t(tail[11]) << 24;
case 11: k2 ^= uint64_t(tail[10]) << 16;
case 10: k2 ^= uint64_t(tail[ 9]) << 8;
case 9: k2 ^= uint64_t(tail[ 8]) << 0;
k2 *= c2; k2 = ROTL64(k2,33); k2 *= c1; h2 ^= k2;
case 8: k1 ^= uint64_t(tail[ 7]) << 56;
case 7: k1 ^= uint64_t(tail[ 6]) << 48;
case 6: k1 ^= uint64_t(tail[ 5]) << 40;
case 5: k1 ^= uint64_t(tail[ 4]) << 32;
case 4: k1 ^= uint64_t(tail[ 3]) << 24;
case 3: k1 ^= uint64_t(tail[ 2]) << 16;
case 2: k1 ^= uint64_t(tail[ 1]) << 8;
case 1: k1 ^= uint64_t(tail[ 0]) << 0;
k1 *= c1; k1 = ROTL64(k1,31); k1 *= c2; h1 ^= k1;
};
//----------
// finalization
h1 ^= len; h2 ^= len;
h1 += h2;
h2 += h1;
h1 = fmix(h1);
h2 = fmix(h2);
h1 += h2;
h2 += h1;
((uint64_t*)out)[0] = h1;
((uint64_t*)out)[1] = h2;
}
//-----------------------------------------------------------------------------

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//-----------------------------------------------------------------------------
// MurmurHash3 was written by Austin Appleby, and is placed in the public
// domain. The author hereby disclaims copyright to this source code.
#ifndef _MURMURHASH3_H_
#define _MURMURHASH3_H_
//-----------------------------------------------------------------------------
// Platform-specific functions and macros
// Microsoft Visual Studio
#if defined(_MSC_VER)
typedef unsigned char uint8_t;
typedef unsigned long uint32_t;
typedef unsigned __int64 uint64_t;
// Other compilers
#else // defined(_MSC_VER)
#include <stdint.h>
#endif // !defined(_MSC_VER)
//-----------------------------------------------------------------------------
void MurmurHash3_x86_32 ( const void * key, int len, uint32_t seed, void * out );
void MurmurHash3_x86_128 ( const void * key, int len, uint32_t seed, void * out );
void MurmurHash3_x64_128 ( const void * key, int len, uint32_t seed, void * out );
//-----------------------------------------------------------------------------
#endif // _MURMURHASH3_H_

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#include "benchmark.h"
#include <cerrno>
#include <cstring>
#include <cstdio>
#include <memory>
#include <sys/time.h>
#include <sys/resource.h>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <vector>
using std::cerr;
using std::cout;
using std::endl;
using std::setfill;
using std::setw;
using std::string;
using std::ostringstream;
using std::vector;
namespace {
/* Subtract the `struct timeval' values X and Y,
storing the result in RESULT.
Return 1 if the difference is negative, otherwise 0. */
int timeval_subtract (
struct timeval *result, struct timeval *x, struct timeval* y) {
/* Perform the carry for the later subtraction by updating y. */
if (x->tv_usec < y->tv_usec) {
int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
y->tv_usec -= 1000000 * nsec;
y->tv_sec += nsec;
}
if (x->tv_usec - y->tv_usec > 1000000) {
int nsec = (x->tv_usec - y->tv_usec) / 1000000;
y->tv_usec += 1000000 * nsec;
y->tv_sec -= nsec;
}
/* Compute the time remaining to wait.
tv_usec is certainly positive. */
result->tv_sec = x->tv_sec - y->tv_sec;
result->tv_usec = x->tv_usec - y->tv_usec;
/* Return 1 if result is negative. */
return x->tv_sec < y->tv_sec;
}
// C++ iostream is terrible for formatting.
string timeval_to_string(timeval tv) {
ostringstream out;
out << setfill(' ') << setw(3) << tv.tv_sec << '.';
out << setfill('0') << setw(6) << tv.tv_usec;
return out.str();
}
struct rusage getrusage_or_die() {
struct rusage rs;
int ret = getrusage(RUSAGE_SELF, &rs);
if (ret != 0) {
cerr << "rusage failed: " << strerror(errno) << endl;
exit(-1);
}
return rs;
}
struct timeval gettimeofday_or_die() {
struct timeval tv;
int ret = gettimeofday(&tv, NULL);
if (ret != 0) {
cerr << "gettimeofday failed: " << strerror(errno) << endl;
exit(-1);
}
return tv;
}
#ifdef HAVE_CXA_DEMANGLE
string demangle(const string& name) {
char buf[1024];
unsigned int size = 1024;
int status;
char* res = abi::__cxa_demangle(
name.c_str(), buf, &size, &status);
return res;
}
#else
string demangle(const string& name) { return name; }
#endif
static vector<cxxmph::Benchmark*> g_benchmarks;
} // anonymous namespace
namespace cxxmph {
/* static */ void Benchmark::Register(Benchmark* bm) {
if (bm->name().empty()) {
string name = demangle(typeid(*bm).name());
bm->set_name(name);
}
g_benchmarks.push_back(bm);
}
/* static */ void Benchmark::RunAll() {
for (uint32_t i = 0; i < g_benchmarks.size(); ++i) {
std::auto_ptr<Benchmark> bm(g_benchmarks[i]);
if (!bm->SetUp()) {
cerr << "Set up phase for benchmark "
<< bm->name() << " failed." << endl;
continue;
}
bm->MeasureRun();
bm->TearDown();
}
}
void Benchmark::MeasureRun() {
struct timeval walltime_begin = gettimeofday_or_die();
struct rusage begin = getrusage_or_die();
Run();
struct rusage end = getrusage_or_die();
struct timeval walltime_end = gettimeofday_or_die();
struct timeval utime;
timeval_subtract(&utime, &end.ru_utime, &begin.ru_utime);
struct timeval stime;
timeval_subtract(&stime, &end.ru_stime, &begin.ru_stime);
struct timeval wtime;
timeval_subtract(&wtime, &walltime_end, &walltime_begin);
cout << "Benchmark: " << name_ << endl;
cout << "CPU User time : " << timeval_to_string(utime) << endl;
cout << "CPU System time: " << timeval_to_string(stime) << endl;
cout << "Wall clock time: " << timeval_to_string(wtime) << endl;
cout << endl;
}
} // namespace cxxmph

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#ifndef __CXXMPH_BENCHMARK_H__
#define __CXXMPH_BENCHMARK_H__
#include <string>
#include <typeinfo>
namespace cxxmph {
class Benchmark {
public:
Benchmark() {}
virtual ~Benchmark() {}
const std::string& name() { return name_; }
void set_name(const std::string& name) { name_ = name; }
static void Register(Benchmark* bm);
static void RunAll();
protected:
virtual bool SetUp() { return true; };
virtual void Run() = 0;
virtual bool TearDown() { return true; };
private:
std::string name_;
void MeasureRun();
};
} // namespace cxxmph
#endif

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#include <cmath>
#include <fstream>
#include <limits>
#include <iostream>
#include <set>
#include "bm_common.h"
using std::cerr;
using std::endl;
using std::set;
using std::string;
using std::vector;
namespace cxxmph {
UrlsBenchmark::~UrlsBenchmark() {}
bool UrlsBenchmark::SetUp() {
vector<string> urls;
std::ifstream f(urls_file_.c_str());
if (!f.is_open()) {
cerr << "Failed to open urls file " << urls_file_ << endl;
return false;
}
string buffer;
while(std::getline(f, buffer)) urls.push_back(buffer);
set<string> unique(urls.begin(), urls.end());
if (unique.size() != urls.size()) {
cerr << "Input file has repeated keys." << endl;
return false;
}
urls.swap(urls_);
return true;
}
SearchUrlsBenchmark::~SearchUrlsBenchmark() {}
bool SearchUrlsBenchmark::SetUp() {
if (!UrlsBenchmark::SetUp()) return false;
int32_t miss_ratio_int32 = std::numeric_limits<int32_t>::max() * miss_ratio_;
forced_miss_urls_.resize(nsearches_);
random_.resize(nsearches_);
for (uint32_t i = 0; i < nsearches_; ++i) {
random_[i] = urls_[random() % urls_.size()];
if (random() < miss_ratio_int32) {
forced_miss_urls_[i] = random_[i].as_string() + ".force_miss";
random_[i] = forced_miss_urls_[i];
}
}
return true;
}
Uint64Benchmark::~Uint64Benchmark() {}
bool Uint64Benchmark::SetUp() {
set<uint64_t> unique;
for (uint32_t i = 0; i < count_; ++i) {
uint64_t v;
do { v = random(); } while (unique.find(v) != unique.end());
values_.push_back(v);
unique.insert(v);
}
return true;
}
SearchUint64Benchmark::~SearchUint64Benchmark() {}
bool SearchUint64Benchmark::SetUp() {
if (!Uint64Benchmark::SetUp()) return false;
random_.resize(nsearches_);
for (uint32_t i = 0; i < nsearches_; ++i) {
uint32_t pos = random() % values_.size();
random_[i] = values_[pos];
}
return true;
}
} // namespace cxxmph

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#ifndef __CXXMPH_BM_COMMON_H__
#define __CXXMPH_BM_COMMON_H__
#include "stringpiece.h"
#include <string>
#include <vector>
#include <unordered_map> // std::hash
#include "MurmurHash3.h"
#include "benchmark.h"
namespace std {
template <> struct hash<cxxmph::StringPiece> {
uint32_t operator()(const cxxmph::StringPiece& k) const {
uint32_t out;
MurmurHash3_x86_32(k.data(), k.length(), 1, &out);
return out;
}
};
} // namespace std
namespace cxxmph {
class UrlsBenchmark : public Benchmark {
public:
UrlsBenchmark(const std::string& urls_file) : urls_file_(urls_file) { }
virtual ~UrlsBenchmark();
protected:
virtual bool SetUp();
const std::string urls_file_;
std::vector<std::string> urls_;
};
class SearchUrlsBenchmark : public UrlsBenchmark {
public:
SearchUrlsBenchmark(const std::string& urls_file, uint32_t nsearches, float miss_ratio)
: UrlsBenchmark(urls_file), nsearches_(nsearches), miss_ratio_(miss_ratio) {}
virtual ~SearchUrlsBenchmark();
protected:
virtual bool SetUp();
const uint32_t nsearches_;
float miss_ratio_;
std::vector<std::string> forced_miss_urls_;
std::vector<StringPiece> random_;
};
class Uint64Benchmark : public Benchmark {
public:
Uint64Benchmark(uint32_t count) : count_(count) { }
virtual ~Uint64Benchmark();
virtual void Run() {}
protected:
virtual bool SetUp();
const uint32_t count_;
std::vector<uint64_t> values_;
};
class SearchUint64Benchmark : public Uint64Benchmark {
public:
SearchUint64Benchmark(uint32_t count, uint32_t nsearches)
: Uint64Benchmark(count), nsearches_(nsearches) { }
virtual ~SearchUint64Benchmark();
virtual void Run() {};
protected:
virtual bool SetUp();
const uint32_t nsearches_;
std::vector<uint64_t> random_;
};
} // namespace cxxmph
#endif // __CXXMPH_BM_COMMON_H__

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#include <string>
#include <unordered_map>
#include "hopscotch_map.h"
#include "bm_common.h"
#include "mph_map.h"
using std::string;
// Another reference benchmark:
// http://blog.aggregateknowledge.com/tag/bigmemory/
namespace cxxmph {
template <class MapType, class T>
const T* myfind(const MapType& mymap, const T& k) {
auto it = mymap.find(k);
auto end = mymap.end();
if (it == end) return NULL;
return &it->second;
}
template <class MapType>
class BM_CreateUrls : public UrlsBenchmark {
public:
BM_CreateUrls(const string& urls_file) : UrlsBenchmark(urls_file) { }
virtual void Run() {
MapType mymap;
for (auto it = urls_.begin(); it != urls_.end(); ++it) {
mymap[*it] = *it;
}
}
};
template <class MapType>
class BM_SearchUrls : public SearchUrlsBenchmark {
public:
BM_SearchUrls(const std::string& urls_file, int nsearches, float miss_ratio)
: SearchUrlsBenchmark(urls_file, nsearches, miss_ratio) { }
virtual ~BM_SearchUrls() {}
virtual void Run() {
uint32_t total = 1;
for (auto it = random_.begin(); it != random_.end(); ++it) {
auto v = myfind(mymap_, *it);
if (v) total += v->length();
}
fprintf(stderr, "Total: %u\n", total);
}
protected:
virtual bool SetUp() {
if (!SearchUrlsBenchmark::SetUp()) return false;
for (auto it = urls_.begin(); it != urls_.end(); ++it) {
mymap_[*it] = *it;
}
mymap_.rehash(mymap_.bucket_count());
fprintf(stderr, "Occupation: %f\n", static_cast<float>(mymap_.size())/mymap_.bucket_count());
return true;
}
MapType mymap_;
};
template <class MapType>
class BM_SearchUint64 : public SearchUint64Benchmark {
public:
BM_SearchUint64() : SearchUint64Benchmark(100000, 10*1000*1000) { }
virtual bool SetUp() {
if (!SearchUint64Benchmark::SetUp()) return false;
for (uint32_t i = 0; i < values_.size(); ++i) {
mymap_[values_[i]] = values_[i];
}
mymap_.rehash(mymap_.bucket_count());
// Double check if everything is all right
cerr << "Doing double check" << endl;
for (uint32_t i = 0; i < values_.size(); ++i) {
if (mymap_[values_[i]] != values_[i]) {
cerr << "Looking for " << i << " th key value " << values_[i];
cerr << " yielded " << mymap_[values_[i]] << endl;
return false;
}
}
return true;
}
virtual void Run() {
for (auto it = random_.begin(); it != random_.end(); ++it) {
auto v = myfind(mymap_, *it);
if (*v != *it) {
cerr << "Looked for " << *it << " got " << *v << endl;
exit(-1);
}
}
}
MapType mymap_;
};
} // namespace cxxmph
using namespace cxxmph;
int main(int argc, char** argv) {
srandom(4);
Benchmark::Register(new BM_CreateUrls<dense_hash_map<StringPiece, StringPiece>>("URLS100k"));
Benchmark::Register(new BM_CreateUrls<std::unordered_map<StringPiece, StringPiece>>("URLS100k"));
Benchmark::Register(new BM_CreateUrls<mph_map<StringPiece, StringPiece>>("URLS100k"));
Benchmark::Register(new BM_CreateUrls<sparse_hash_map<StringPiece, StringPiece>>("URLS100k"));
Benchmark::Register(new BM_CreateUrls<tsl::hopscotch_map<StringPiece, StringPiece>>("URLS100k"));
Benchmark::Register(new BM_SearchUrls<dense_hash_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0));
Benchmark::Register(new BM_SearchUrls<std::unordered_map<StringPiece, StringPiece, Murmur3StringPiece>>("URLS100k", 10*1000 * 1000, 0));
Benchmark::Register(new BM_SearchUrls<mph_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0));
Benchmark::Register(new BM_SearchUrls<sparse_hash_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0));
Benchmark::Register(new BM_SearchUrls<tsl::hopscotch_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0));
Benchmark::Register(new BM_SearchUrls<dense_hash_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0.9));
Benchmark::Register(new BM_SearchUrls<std::unordered_map<StringPiece, StringPiece, Murmur3StringPiece>>("URLS100k", 10*1000 * 1000, 0.9));
Benchmark::Register(new BM_SearchUrls<mph_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0.9));
Benchmark::Register(new BM_SearchUrls<sparse_hash_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0.9));
Benchmark::Register(new BM_SearchUrls<tsl::hopscotch_map<StringPiece, StringPiece>>("URLS100k", 10*1000 * 1000, 0.9));
Benchmark::Register(new BM_SearchUint64<dense_hash_map<uint64_t, uint64_t>>);
Benchmark::Register(new BM_SearchUint64<std::unordered_map<uint64_t, uint64_t>>);
Benchmark::Register(new BM_SearchUint64<mph_map<uint64_t, uint64_t>>);
Benchmark::Register(new BM_SearchUint64<sparse_hash_map<uint64_t, uint64_t>>);
Benchmark::Register(new BM_SearchUint64<tsl::hopscotch_map<uint64_t, uint64_t>>);
Benchmark::RunAll();
}

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// Copyright 2010 Google Inc. All Rights Reserved.
// Author: davi@google.com (Davi Reis)
#include <getopt.h>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#include "mph_map.h"
#include "config.h"
using std::cerr;
using std::cout;
using std::endl;
using std::getline;
using std::ifstream;
using std::string;
using std::vector;
using cxxmph::mph_map;
void usage(const char* prg) {
cerr << "usage: " << prg << " [-v] [-h] [-V] <keys.txt>" << endl;
}
void usage_long(const char* prg) {
usage(prg);
cerr << " -h\t print this help message" << endl;
cerr << " -V\t print version number and exit" << endl;
cerr << " -v\t increase verbosity (may be used multiple times)" << endl;
}
int main(int argc, char** argv) {
int verbosity = 0;
while (1) {
char ch = (char)getopt(argc, argv, "hvV");
if (ch == -1) break;
switch (ch) {
case 'h':
usage_long(argv[0]);
return 0;
case 'V':
std::cout << VERSION << std::endl;
return 0;
case 'v':
++verbosity;
break;
}
}
if (optind != argc - 1) {
usage(argv[0]);
return 1;
}
vector<string> keys;
ifstream f(argv[optind]);
if (!f.is_open()) {
std::cerr << "Failed to open " << argv[optind] << std::endl;
exit(-1);
}
string buffer;
while (!getline(f, buffer).eof()) keys.push_back(buffer);
for (uint32_t i = 0; i < keys.size(); ++i) string s = keys[i];
mph_map<string, string> table;
for (uint32_t i = 0; i < keys.size(); ++i) table[keys[i]] = keys[i];
mph_map<string, string>::const_iterator it = table.begin();
mph_map<string, string>::const_iterator end = table.end();
for (int i = 0; it != end; ++it, ++i) {
cout << i << ": " << it->first
<<" -> " << it->second << endl;
}
}

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#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include "mph_map.h"
#include "map_tester.h"
#include "test.h"
using namespace cxxmph;
typedef MapTester<dense_hash_map> Tester;
CXXMPH_CXX_TEST_CASE(empty_find, Tester::empty_find);
CXXMPH_CXX_TEST_CASE(empty_erase, Tester::empty_erase);
CXXMPH_CXX_TEST_CASE(small_insert, Tester::small_insert);
CXXMPH_CXX_TEST_CASE(large_insert, Tester::large_insert);
CXXMPH_CXX_TEST_CASE(small_search, Tester::small_search);
CXXMPH_CXX_TEST_CASE(default_search, Tester::default_search);
CXXMPH_CXX_TEST_CASE(large_search, Tester::large_search);
CXXMPH_CXX_TEST_CASE(string_search, Tester::string_search);
CXXMPH_CXX_TEST_CASE(rehash_zero, Tester::rehash_zero);
CXXMPH_CXX_TEST_CASE(rehash_size, Tester::rehash_size);
CXXMPH_CXX_TEST_CASE(erase_value, Tester::erase_value);
CXXMPH_CXX_TEST_CASE(erase_iterator, Tester::erase_iterator);

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#ifndef __CXXMPH_HOLLOW_ITERATOR_H__
#define __CXXMPH_HOLLOW_ITERATOR_H__
#include <vector>
namespace cxxmph {
using std::vector;
template <typename container_type>
struct is_empty {
public:
is_empty() : c_(NULL), p_(NULL) {};
is_empty(const container_type* c, const vector<bool>* p) : c_(c), p_(p) {};
bool operator()(typename container_type::const_iterator it) const {
if (it == c_->end()) return false;
return !(*p_)[it - c_->begin()];
}
private:
const container_type* c_;
const vector<bool>* p_;
};
template <typename iterator, typename is_empty>
struct hollow_iterator_base
: public std::iterator<std::forward_iterator_tag,
typename iterator::value_type> {
public:
typedef hollow_iterator_base<iterator, is_empty> self_type;
typedef self_type& self_reference;
typedef typename iterator::reference reference;
typedef typename iterator::pointer pointer;
inline hollow_iterator_base() : it_(), empty_() { }
inline hollow_iterator_base(iterator it, is_empty empty, bool solid) : it_(it), empty_(empty) {
if (!solid) advance();
}
// Same as above, assumes solid==true.
inline hollow_iterator_base(iterator it, is_empty empty) : it_(it), empty_(empty) {}
inline hollow_iterator_base(const self_type& rhs) { it_ = rhs.it_; empty_ = rhs.empty_; }
template <typename const_iterator>
hollow_iterator_base(const hollow_iterator_base<const_iterator, is_empty>& rhs) { it_ = rhs.it_; empty_ = rhs.empty_; }
reference operator*() { return *it_; }
pointer operator->() { return &(*it_); }
self_reference operator++() { ++it_; advance(); return *this; }
// self_type operator++() { auto tmp(*this); ++tmp; return tmp; }
template <typename const_iterator>
bool operator==(const hollow_iterator_base<const_iterator, is_empty>& rhs) { return rhs.it_ == it_; }
template <typename const_iterator>
bool operator!=(const hollow_iterator_base<const_iterator, is_empty>& rhs) { return rhs.it_ != it_; }
// should be friend
iterator it_;
is_empty empty_;
private:
void advance() {
while (empty_(it_)) ++it_;
}
};
template <typename container_type, typename iterator>
inline auto make_solid(
container_type* v, const vector<bool>* p, iterator it) ->
hollow_iterator_base<iterator, is_empty<const container_type>> {
return hollow_iterator_base<iterator, is_empty<const container_type>>(
it, is_empty<const container_type>(v, p));
}
template <typename container_type, typename iterator>
inline auto make_hollow(
container_type* v, const vector<bool>* p, iterator it) ->
hollow_iterator_base<iterator, is_empty<const container_type>> {
return hollow_iterator_base<iterator, is_empty<const container_type>>(
it, is_empty<const container_type>(v, p), false);
}
} // namespace cxxmph
#endif // __CXXMPH_HOLLOW_ITERATOR_H__

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#include <cstdlib>
#include <cstdio>
#include <vector>
#include <iostream>
using std::cerr;
using std::endl;
using std::vector;
#include "hollow_iterator.h"
using cxxmph::hollow_iterator_base;
using cxxmph::make_hollow;
using cxxmph::is_empty;
int main(int, char**) {
vector<int> v;
vector<bool> p;
for (int i = 0; i < 100; ++i) {
v.push_back(i);
p.push_back(i % 2 == 0);
}
auto begin = make_hollow(&v, &p, v.begin());
auto end = make_hollow(&v, &p, v.end());
for (auto it = begin; it != end; ++it) {
if (((*it) % 2) != 0) exit(-1);
}
const vector<int>* cv(&v);
auto cbegin(make_hollow(cv, &p, cv->begin()));
auto cend(make_hollow(cv, &p, cv->begin()));
for (auto it = cbegin; it != cend; ++it) {
if (((*it) % 2) != 0) exit(-1);
}
const vector<bool>* cp(&p);
cbegin = make_hollow(cv, cp, v.begin());
cend = make_hollow(cv, cp, cv->end());
vector<int>::iterator vit1 = v.begin();
vector<int>::const_iterator vit2 = v.begin();
if (vit1 != vit2) exit(-1);
auto it1 = make_hollow(&v, &p, vit1);
auto it2 = make_hollow(&v, &p, vit2);
if (it1 != it2) exit(-1);
typedef is_empty<const vector<int>> iev;
hollow_iterator_base<vector<int>::iterator, iev> default_constructed;
default_constructed = make_hollow(&v, &p, v.begin());
return 0;
}

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#include "map_tester.h"
namespace cxxxmph {
}

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#ifndef __CXXMPH_MAP_TEST_HELPER_H__
#define __CXXMPH_MAP_TEST_HELPER_H__
#include <cstdint>
#include <string>
#include <utility>
#include <vector>
#include <unordered_map>
#include "string_util.h"
#include <check.h>
namespace cxxmph {
using namespace cxxmph;
using namespace std;
template <template<typename...> class map_type>
struct MapTester {
static bool empty_find() {
map_type<int64_t, int64_t> m;
for (int i = 0; i < 1000; ++i) {
if (m.find(i) != m.end()) return false;
}
return true;
}
static bool empty_erase() {
map_type<int64_t, int64_t> m;
for (int i = 0; i < 1000; ++i) {
m.erase(i);
if (m.size()) return false;
}
return true;
}
static bool small_insert() {
map_type<int64_t, int64_t> m;
// Start counting from 1 to not touch default constructed value bugs
for (int i = 1; i < 12; ++i) m.insert(make_pair(i, i));
return m.size() == 11;
}
static bool large_insert() {
map_type<int64_t, int64_t> m;
// Start counting from 1 to not touch default constructed value bugs
int nkeys = 12 * 256 * 256;
for (int i = 1; i < nkeys; ++i) m.insert(make_pair(i, i));
return static_cast<int>(m.size()) == nkeys - 1;
}
static bool small_search() {
map_type<int64_t, int64_t> m;
// Start counting from 1 to not touch default constructed value bugs
for (int i = 1; i < 12; ++i) m.insert(make_pair(i, i));
for (int i = 1; i < 12; ++i) if (m.find(i) == m.end()) return false;
return true;
}
static bool default_search() {
map_type<int64_t, int64_t> m;
if (m.find(0) != m.end()) return false;
for (int i = 1; i < 256; ++i) m.insert(make_pair(i, i));
if (m.find(0) != m.end()) return false;
for (int i = 0; i < 256; ++i) m.insert(make_pair(i, i));
if (m.find(0) == m.end()) return false;
return true;
}
static bool large_search() {
int nkeys = 10 * 1000;
map_type<int64_t, int64_t> m;
for (int i = 0; i < nkeys; ++i) m.insert(make_pair(i, i));
for (int i = 0; i < nkeys; ++i) if (m.find(i) == m.end()) return false;
return true;
}
static bool string_search() {
int nkeys = 10 * 1000;
vector<string> keys;
for (int i = 0; i < nkeys; ++i) {
keys.push_back(format("%v", i));
}
map_type<string, int64_t> m;
for (int i = 0; i < nkeys; ++i) m.insert(make_pair(keys[i], i));
for (int i = 0; i < nkeys; ++i) {
auto it = m.find(keys[i]);
if (it == m.end()) return false;
if (it->second != i) return false;
}
return true;
}
static bool rehash_zero() {
map_type<int64_t, int64_t> m;
m.rehash(0);
return m.size() == 0;
}
static bool rehash_size() {
map_type<int64_t, int64_t> m;
int nkeys = 10 * 1000;
for (int i = 0; i < nkeys; ++i) { m.insert(make_pair(i, i)); }
m.rehash(nkeys);
for (int i = 0; i < nkeys; ++i) { if (m.find(i) == m.end()) return false; }
for (int i = nkeys; i < nkeys * 2; ++i) {
if (m.find(i) != m.end()) return false;
}
return true;
}
static bool erase_iterator() {
map_type<int64_t, int64_t> m;
int nkeys = 10 * 1000;
for (int i = 0; i < nkeys; ++i) { m.insert(make_pair(i, i)); }
for (int i = 0; i < nkeys; ++i) {
if (m.find(i) == m.end()) return false;
}
for (int i = nkeys - 1; i >= 0; --i) { if (m.find(i) == m.end()) return false; }
for (int i = nkeys - 1; i >= 0; --i) {
fail_unless(m.find(i) != m.end(), "after erase %d cannot be found", i);
fail_unless(m.find(i)->first == i, "after erase key %d cannot be found", i);
}
for (int i = nkeys - 1; i >= 0; --i) {
fail_unless(m.find(i) != m.end(), "after erase %d cannot be found", i);
fail_unless(m.find(i)->first == i, "after erase key %d cannot be found", i);
if (!(m.find(i)->first == i)) return false;
m.erase(m.find(i));
if (static_cast<int>(m.size()) != i) return false;
}
return true;
}
static bool erase_value() {
map_type<int64_t, int64_t> m;
int nkeys = 10 * 1000;
for (int i = 0; i < nkeys; ++i) { m.insert(make_pair(i, i)); }
for (int i = nkeys - 1; i >= 0; --i) {
fail_unless(m.find(i) != m.end());
m.erase(i);
if (static_cast<int>(m.size()) != i) return false;
}
return true;
}
};
} // namespace cxxxmph
#endif // __CXXMPH_MAP_TEST_HELPER_H__

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#include "map_tester.h"
#include "test.h"
using namespace cxxmph;
typedef MapTester<std::unordered_map> Tester;
CXXMPH_CXX_TEST_CASE(small_insert, Tester::small_insert);
CXXMPH_CXX_TEST_CASE(large_insert, Tester::large_insert);
CXXMPH_CXX_TEST_CASE(small_search, Tester::small_search);
CXXMPH_CXX_TEST_CASE(default_search, Tester::default_search);
CXXMPH_CXX_TEST_CASE(large_search, Tester::large_search);
CXXMPH_CXX_TEST_CASE(string_search, Tester::string_search);
CXXMPH_CXX_TEST_CASE(rehash_zero, Tester::rehash_zero);
CXXMPH_CXX_TEST_CASE(rehash_size, Tester::rehash_size);
CXXMPH_CXX_TEST_CASE(erase_value, Tester::erase_value);
CXXMPH_CXX_TEST_CASE(erase_iterator, Tester::erase_iterator);

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#include "mph_bits.h"
namespace cxxmph {
const uint8_t dynamic_2bitset::vmask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
dynamic_2bitset::dynamic_2bitset() : size_(0), fill_(false) {}
dynamic_2bitset::dynamic_2bitset(uint32_t size, bool fill)
: size_(size), fill_(fill), data_(ceil(size / 4.0), ones()*fill) {}
dynamic_2bitset::~dynamic_2bitset() {}
}

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#ifndef __CXXMPH_MPH_BITS_H__
#define __CXXMPH_MPH_BITS_H__
#include <stdint.h> // for uint32_t and friends
#include <array>
#include <cassert>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <limits>
#include <vector>
#include <utility>
namespace cxxmph {
class dynamic_2bitset {
public:
dynamic_2bitset();
~dynamic_2bitset();
dynamic_2bitset(uint32_t size, bool fill = false);
const uint8_t operator[](uint32_t i) const { return get(i); }
const uint8_t get(uint32_t i) const {
assert(i < size());
assert((i >> 2) < data_.size());
return (data_[(i >> 2)] >> (((i & 3) << 1)) & 3);
}
void set(uint32_t i, uint8_t v) {
assert((i >> 2) < data_.size());
data_[(i >> 2)] |= ones() ^ dynamic_2bitset::vmask[i & 3];
data_[(i >> 2)] &= ((v << ((i & 3) << 1)) | dynamic_2bitset::vmask[i & 3]);
assert(v <= 3);
assert(get(i) == v);
}
void resize(uint32_t size) {
size_ = size;
data_.resize(size >> 2, fill_*ones());
}
void swap(dynamic_2bitset& other) {
std::swap(other.size_, size_);
std::swap(other.fill_, fill_);
other.data_.swap(data_);
}
void clear() { data_.clear(); size_ = 0; }
uint32_t size() const { return size_; }
static const uint8_t vmask[];
const std::vector<uint8_t>& data() const { return data_; }
private:
uint32_t size_;
bool fill_;
std::vector<uint8_t> data_;
const uint8_t ones() { return std::numeric_limits<uint8_t>::max(); }
};
static uint32_t nextpoweroftwo(uint32_t k) {
if (k == 0) return 1;
k--;
for (uint32_t i=1; i<sizeof(uint32_t)*CHAR_BIT; i<<=1) k = k | k >> i;
return k+1;
}
// Interesting bit tricks that might end up here:
// http://graphics.stanford.edu/~seander/bithacks.html#ZeroInWord
// Fast a % (k*2^t)
// http://www.azillionmonkeys.com/qed/adiv.html
// rank and select:
// http://vigna.dsi.unimi.it/ftp/papers/Broadword.pdf
} // namespace cxxmph
#endif

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#include <cstdio>
#include <cstdlib>
#include "mph_bits.h"
using cxxmph::dynamic_2bitset;
using cxxmph::nextpoweroftwo;
int main(int argc, char** argv) {
dynamic_2bitset small(256, true);
for (uint32_t i = 0; i < small.size(); ++i) small.set(i, i % 4);
for (uint32_t i = 0; i < small.size(); ++i) {
if (small[i] != i % 4) {
fprintf(stderr, "wrong bits %d at %d expected %d\n", small[i], i, i % 4);
exit(-1);
}
}
uint32_t size = 256;
dynamic_2bitset bits(size, true /* fill with ones */);
for (uint32_t i = 0; i < size; ++i) {
if (bits[i] != 3) {
fprintf(stderr, "wrong bits %d at %d expected %d\n", bits[i], i, 3);
exit(-1);
}
}
for (uint32_t i = 0; i < size; ++i) bits.set(i, 0);
for (uint32_t i = 0; i < size; ++i) {
if (bits[i] != 0) {
fprintf(stderr, "wrong bits %d at %d expected %d\n", bits[i], i, 0);
exit(-1);
}
}
for (uint32_t i = 0; i < size; ++i) bits.set(i, i % 4);
for (uint32_t i = 0; i < size; ++i) {
if (bits[i] != i % 4) {
fprintf(stderr, "wrong bits %d at %d expected %d\n", bits[i], i, i % 4);
exit(-1);
}
}
dynamic_2bitset size_corner1(1);
if (size_corner1.size() != 1) exit(-1);
dynamic_2bitset size_corner2(2);
if (size_corner2.size() != 2) exit(-1);
(dynamic_2bitset(4, true)).swap(size_corner2);
if (size_corner2.size() != 4) exit(-1);
for (uint32_t i = 0; i < size_corner2.size(); ++i) {
if (size_corner2[i] != 3) exit(-1);
}
size_corner2.clear();
if (size_corner2.size() != 0) exit(-1);
dynamic_2bitset empty;
empty.clear();
dynamic_2bitset large(1000, true);
empty.swap(large);
if (nextpoweroftwo(3) != 4) exit(-1);
}

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#include <limits>
#include <iostream>
#include <vector>
using std::cerr;
using std::endl;
#include "mph_index.h"
using std::vector;
namespace {
static const uint8_t kUnassigned = 3;
// table used for looking up the number of assigned vertices to a 8-bit integer
static uint8_t kBdzLookupIndex[] =
{
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 0
};
} // anonymous namespace
namespace cxxmph {
MPHIndex::~MPHIndex() {
clear();
}
void MPHIndex::clear() {
std::vector<uint32_t> empty_ranktable;
ranktable_.swap(empty_ranktable);
dynamic_2bitset empty_g;
g_.swap(empty_g);
}
bool MPHIndex::GenerateQueue(
TriGraph* graph, vector<uint32_t>* queue_output) {
uint32_t queue_head = 0, queue_tail = 0;
uint32_t nedges = m_;
uint32_t nvertices = n_;
// Relies on vector<bool> using 1 bit per element
vector<bool> marked_edge(nedges + 1, false);
vector<uint32_t> queue(nvertices, 0);
for (uint32_t i = 0; i < nedges; ++i) {
const TriGraph::Edge& e = graph->edges()[i];
if (graph->vertex_degree()[e[0]] == 1 ||
graph->vertex_degree()[e[1]] == 1 ||
graph->vertex_degree()[e[2]] == 1) {
if (!marked_edge[i]) {
queue[queue_head++] = i;
marked_edge[i] = true;
}
}
}
/*
for (unsigned int i = 0; i < marked_edge.size(); ++i) {
cerr << "vertex with degree " << static_cast<uint32_t>(graph->vertex_degree()[i]) << " marked " << marked_edge[i] << endl;
}
for (unsigned int i = 0; i < queue.size(); ++i) {
cerr << "vertex " << i << " queued at " << queue[i] << endl;
}
*/
// At this point queue head is the number of edges touching at least one
// vertex of degree 1.
// cerr << "Queue head " << queue_head << " Queue tail " << queue_tail << endl;
// graph->DebugGraph();
while (queue_tail != queue_head) {
uint32_t current_edge = queue[queue_tail++];
graph->RemoveEdge(current_edge);
const TriGraph::Edge& e = graph->edges()[current_edge];
for (int i = 0; i < 3; ++i) {
uint32_t v = e[i];
if (graph->vertex_degree()[v] == 1) {
uint32_t first_edge = graph->first_edge()[v];
if (!marked_edge[first_edge]) {
queue[queue_head++] = first_edge;
marked_edge[first_edge] = true;
}
}
}
}
/*
for (unsigned int i = 0; i < queue.size(); ++i) {
cerr << "vertex " << i << " queued at " << queue[i] << endl;
}
*/
int cycles = queue_head - nedges;
if (cycles == 0) queue.swap(*queue_output);
return cycles == 0;
}
void MPHIndex::Assigning(
const vector<TriGraph::Edge>& edges, const vector<uint32_t>& queue) {
uint32_t current_edge = 0;
vector<bool> marked_vertices(n_ + 1);
dynamic_2bitset(8, true).swap(g_);
// Initialize vector of half nibbles with all bits set.
dynamic_2bitset g(n_, true /* set bits to 1 */);
uint32_t nedges = m_; // for legibility
for (int i = nedges - 1; i + 1 >= 1; --i) {
current_edge = queue[i];
const TriGraph::Edge& e = edges[current_edge];
/*
cerr << "B: " << e[0] << " " << e[1] << " " << e[2] << " -> "
<< get_2bit_value(g_, e[0]) << " "
<< get_2bit_value(g_, e[1]) << " "
<< get_2bit_value(g_, e[2]) << " edge " << current_edge << endl;
*/
if (!marked_vertices[e[0]]) {
if (!marked_vertices[e[1]]) {
g.set(e[1], kUnassigned);
marked_vertices[e[1]] = true;
}
if (!marked_vertices[e[2]]) {
g.set(e[2], kUnassigned);
assert(marked_vertices.size() > e[2]);
marked_vertices[e[2]] = true;
}
g.set(e[0], (6 - (g[e[1]] + g[e[2]])) % 3);
marked_vertices[e[0]] = true;
} else if (!marked_vertices[e[1]]) {
if (!marked_vertices[e[2]]) {
g.set(e[2], kUnassigned);
marked_vertices[e[2]] = true;
}
g.set(e[1], (7 - (g[e[0]] + g[e[2]])) % 3);
marked_vertices[e[1]] = true;
} else {
g.set(e[2], (8 - (g[e[0]] + g[e[1]])) % 3);
marked_vertices[e[2]] = true;
}
/*
cerr << "A: " << e[0] << " " << e[1] << " " << e[2] << " -> "
<< static_cast<uint32_t>(g[e[0]]) << " "
<< static_cast<uint32_t>(g[e[1]]) << " "
<< static_cast<uint32_t>(g[e[2]]) << " " << endl;
*/
}
g_.swap(g);
}
void MPHIndex::Ranking() {
uint32_t nbytes_total = static_cast<uint32_t>(ceil(n_ / 4.0));
uint32_t size = k_ >> 2U;
uint32_t ranktable_size = static_cast<uint32_t>(
ceil(n_ / static_cast<double>(k_)));
vector<uint32_t> ranktable(ranktable_size);
uint32_t offset = 0;
uint32_t count = 0;
uint32_t i = 1;
while (1) {
if (i == ranktable.size()) break;
uint32_t nbytes = size < nbytes_total ? size : nbytes_total;
for (uint32_t j = 0; j < nbytes; ++j) {
count += kBdzLookupIndex[g_.data()[offset + j]];
}
ranktable[i] = count;
offset += nbytes;
nbytes_total -= size;
++i;
}
ranktable_.swap(ranktable);
}
uint32_t MPHIndex::Rank(uint32_t vertex) const {
if (ranktable_.empty()) return 0;
uint32_t index = vertex >> b_;
uint32_t base_rank = ranktable_[index];
uint32_t beg_idx_v = index << b_;
uint32_t beg_idx_b = beg_idx_v >> 2;
uint32_t end_idx_b = vertex >> 2;
while (beg_idx_b < end_idx_b) {
assert(g_.data().size() > beg_idx_b);
base_rank += kBdzLookupIndex[g_.data()[beg_idx_b++]];
}
beg_idx_v = beg_idx_b << 2;
/*
cerr << "beg_idx_v: " << beg_idx_v << endl;
cerr << "base rank: " << base_rank << endl;
cerr << "G: ";
for (unsigned int i = 0; i < n_; ++i) {
cerr << static_cast<uint32_t>(g_[i]) << " ";
}
cerr << endl;
*/
while (beg_idx_v < vertex) {
if (g_[beg_idx_v] != kUnassigned) ++base_rank;
++beg_idx_v;
}
// cerr << "Base rank: " << base_rank << endl;
return base_rank;
}
void MPHIndex::swap(std::vector<uint32_t>& params, dynamic_2bitset& g, std::vector<uint32_t>& ranktable) {
params.resize(12);
uint32_t rounded_c = c_ * 1000 * 1000;
std::swap(params[0], rounded_c);
c_ = static_cast<double>(rounded_c) / 1000 / 1000;
std::swap(params[1], m_);
std::swap(params[2], n_);
std::swap(params[3], k_);
uint32_t uint32_square = static_cast<uint32_t>(square_);
std::swap(params[4], uint32_square);
square_ = uint32_square;
std::swap(params[5], hash_seed_[0]);
std::swap(params[6], hash_seed_[1]);
std::swap(params[7], hash_seed_[2]);
g.swap(g_);
ranktable.swap(ranktable_);
}
} // namespace cxxmph

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#ifndef __CXXMPH_MPH_INDEX_H__
#define __CXXMPH_MPH_INDEX_H__
// Minimal perfect hash abstraction implementing the BDZ algorithm
//
// This is a data structure that given a set of known keys S, will create a
// mapping from S to [0..|S|). The class is informed about S through the Reset
// method and the mapping is queried by calling index(key).
//
// This is a pretty uncommon data structure, and if you application has a real
// use case for it, chances are that it is a real win. If all you are doing is
// a straightforward implementation of an in-memory associative mapping data
// structure, then it will probably be slower. Take a look at mph_map.h
// instead.
//
// Thesis presenting this and similar algorithms:
// http://homepages.dcc.ufmg.br/~fbotelho/en/talks/thesis2008/thesis.pdf
//
// Notes:
//
// Most users can use the SimpleMPHIndex wrapper instead of the MPHIndex which
// have confusing template parameters.
// This class only implements a minimal perfect hash function, it does not
// implement an associative mapping data structure.
#include <stdint.h>
#include <cassert>
#include <climits>
#include <cmath>
#include <unordered_map> // for std::hash
#include <vector>
#include <iostream>
using std::cerr;
using std::endl;
#include "seeded_hash.h"
#include "mph_bits.h"
#include "trigraph.h"
namespace cxxmph {
class MPHIndex {
public:
MPHIndex(bool square = false, double c = 1.23, uint8_t b = 7) :
c_(c), b_(b), m_(0), n_(0), k_(0), square_(square), r_(1), g_(8, true) {
nest_displacement_[0] = 0;
nest_displacement_[1] = r_;
nest_displacement_[2] = (r_ << 1);
}
~MPHIndex();
template <class SeededHashFcn, class ForwardIterator>
bool Reset(ForwardIterator begin, ForwardIterator end, uint32_t size);
template <class SeededHashFcn, class Key> // must agree with Reset
// Get a unique identifier for k, in the range [0;size()). If x wasn't part
// of the input in the last Reset call, returns a random value.
uint32_t index(const Key& x) const;
uint32_t size() const { return m_; }
void clear();
// Advanced users functions. Please avoid unless you know what you are doing.
uint32_t perfect_hash_size() const { return n_; }
template <class SeededHashFcn, class Key> // must agree with Reset
uint32_t perfect_hash(const Key& x) const; // way faster than the minimal
template <class SeededHashFcn, class Key> // must agree with Reset
uint32_t perfect_square(const Key& x) const; // even faster but needs square=true
uint32_t minimal_perfect_hash_size() const { return size(); }
template <class SeededHashFcn, class Key> // must agree with Reset
uint32_t minimal_perfect_hash(const Key& x) const;
// Experimental api to use as a serialization building block.
// Since this signature exposes some implementation details, expect it to
// change.
void swap(std::vector<uint32_t>& params, dynamic_2bitset& g, std::vector<uint32_t>& ranktable);
private:
template <class SeededHashFcn, class ForwardIterator>
bool Mapping(ForwardIterator begin, ForwardIterator end,
std::vector<TriGraph::Edge>* edges,
std::vector<uint32_t>* queue);
bool GenerateQueue(TriGraph* graph, std::vector<uint32_t>* queue);
void Assigning(const std::vector<TriGraph::Edge>& edges,
const std::vector<uint32_t>& queue);
void Ranking();
uint32_t Rank(uint32_t vertex) const;
// Algorithm parameters
// Perfect hash function density. If this was a 2graph,
// then probability of having an acyclic graph would be
// sqrt(1-(2/c)^2). See section 3 for details.
// http://www.it-c.dk/people/pagh/papers/simpleperf.pdf
double c_;
uint8_t b_; // Number of bits of the kth index in the ranktable
// Values used during generation
uint32_t m_; // edges count
uint32_t n_; // vertex count
uint32_t k_; // kth index in ranktable, $k = log_2(n=3r)\varepsilon$
bool square_; // make bit vector size a power of 2
// Values used during search
// Partition vertex count, derived from c parameter.
uint32_t r_;
uint32_t nest_displacement_[3]; // derived from r_
// The array containing the minimal perfect hash function graph.
dynamic_2bitset g_;
uint8_t threebit_mod3[10]; // speed up mod3 calculation for 3bit ints
// The table used for the rank step of the minimal perfect hash function
std::vector<uint32_t> ranktable_;
// The selected hash seed triplet for finding the edges in the minimal
// perfect hash function graph.
uint32_t hash_seed_[3];
};
// Template method needs to go in the header file.
template <class SeededHashFcn, class ForwardIterator>
bool MPHIndex::Reset(
ForwardIterator begin, ForwardIterator end, uint32_t size) {
if (end == begin) {
clear();
return true;
}
m_ = size;
r_ = static_cast<uint32_t>(ceil((c_*m_)/3));
if ((r_ % 2) == 0) r_ += 1;
// This can be used to speed mods, but increases occupation too much.
// Needs to try http://gmplib.org/manual/Integer-Exponentiation.html instead
if (square_) r_ = nextpoweroftwo(r_);
nest_displacement_[0] = 0;
nest_displacement_[1] = r_;
nest_displacement_[2] = (r_ << 1);
for (uint32_t i = 0; i < sizeof(threebit_mod3); ++i) threebit_mod3[i] = i % 3;
n_ = 3*r_;
k_ = 1U << b_;
// cerr << "m " << m_ << " n " << n_ << " r " << r_ << endl;
int iterations = 1000;
std::vector<TriGraph::Edge> edges;
std::vector<uint32_t> queue;
while (1) {
// cerr << "Iterations missing: " << iterations << endl;
for (int i = 0; i < 3; ++i) hash_seed_[i] = random();
if (Mapping<SeededHashFcn>(begin, end, &edges, &queue)) break;
else --iterations;
if (iterations == 0) break;
}
if (iterations == 0) return false;
Assigning(edges, queue);
std::vector<TriGraph::Edge>().swap(edges);
Ranking();
return true;
}
template <class SeededHashFcn, class ForwardIterator>
bool MPHIndex::Mapping(
ForwardIterator begin, ForwardIterator end,
std::vector<TriGraph::Edge>* edges, std::vector<uint32_t>* queue) {
TriGraph graph(n_, m_);
for (ForwardIterator it = begin; it != end; ++it) {
h128 h = SeededHashFcn().hash128(*it, hash_seed_[0]);
// for (int i = 0; i < 3; ++i) h[i] = SeededHashFcn()(*it, hash_seed_[i]);
uint32_t v0 = h[0] % r_;
uint32_t v1 = h[1] % r_ + r_;
uint32_t v2 = h[2] % r_ + (r_ << 1);
// cerr << "Key: " << *it << " edge " << it - begin << " (" << v0 << "," << v1 << "," << v2 << ")" << endl;
graph.AddEdge(TriGraph::Edge(v0, v1, v2));
}
if (GenerateQueue(&graph, queue)) {
graph.ExtractEdgesAndClear(edges);
return true;
}
return false;
}
template <class SeededHashFcn, class Key>
uint32_t MPHIndex::perfect_square(const Key& key) const {
h128 h = SeededHashFcn().hash128(key, hash_seed_[0]);
h[0] = (h[0] & (r_-1)) + nest_displacement_[0];
h[1] = (h[1] & (r_-1)) + nest_displacement_[1];
h[2] = (h[2] & (r_-1)) + nest_displacement_[2];
assert((h[0]) < g_.size());
assert((h[1]) < g_.size());
assert((h[2]) < g_.size());
uint8_t nest = threebit_mod3[g_[h[0]] + g_[h[1]] + g_[h[2]]];
uint32_t vertex = h[nest];
return vertex;
}
template <class SeededHashFcn, class Key>
uint32_t MPHIndex::perfect_hash(const Key& key) const {
if (!g_.size()) return 0;
h128 h = SeededHashFcn().hash128(key, hash_seed_[0]);
h[0] = (h[0] % r_) + nest_displacement_[0];
h[1] = (h[1] % r_) + nest_displacement_[1];
h[2] = (h[2] % r_) + nest_displacement_[2];
assert((h[0]) < g_.size());
assert((h[1]) < g_.size());
assert((h[2]) < g_.size());
uint8_t nest = threebit_mod3[g_[h[0]] + g_[h[1]] + g_[h[2]]];
uint32_t vertex = h[nest];
return vertex;
}
template <class SeededHashFcn, class Key>
uint32_t MPHIndex::minimal_perfect_hash(const Key& key) const {
return Rank(perfect_hash<SeededHashFcn, Key>(key));
}
template <class SeededHashFcn, class Key>
uint32_t MPHIndex::index(const Key& key) const {
return minimal_perfect_hash<SeededHashFcn, Key>(key);
}
// Simple wrapper around MPHIndex to simplify calling code. Please refer to the
// MPHIndex class for documentation.
template <class Key, class HashFcn = typename seeded_hash<std::hash<Key>>::hash_function>
class SimpleMPHIndex : public MPHIndex {
public:
SimpleMPHIndex(bool advanced_usage = false) : MPHIndex(advanced_usage) {}
template <class ForwardIterator>
bool Reset(ForwardIterator begin, ForwardIterator end, uint32_t size) {
return MPHIndex::Reset<HashFcn>(begin, end, size);
}
uint32_t index(const Key& key) const { return MPHIndex::index<HashFcn>(key); }
};
// The parameters minimal and square trade memory usage for evaluation speed.
// Minimal decreases speed and memory usage, and square does the opposite.
// Using minimal=true and square=false is the same as SimpleMPHIndex.
template <bool minimal, bool square, class Key, class HashFcn>
struct FlexibleMPHIndex {};
template <class Key, class HashFcn>
struct FlexibleMPHIndex<true, false, Key, HashFcn>
: public SimpleMPHIndex<Key, HashFcn> {
FlexibleMPHIndex() : SimpleMPHIndex<Key, HashFcn>(false) {}
uint32_t index(const Key& key) const {
return MPHIndex::minimal_perfect_hash<HashFcn>(key); }
uint32_t size() const { return MPHIndex::minimal_perfect_hash_size(); }
};
template <class Key, class HashFcn>
struct FlexibleMPHIndex<false, true, Key, HashFcn>
: public SimpleMPHIndex<Key, HashFcn> {
FlexibleMPHIndex() : SimpleMPHIndex<Key, HashFcn>(true) {}
uint32_t index(const Key& key) const {
return MPHIndex::perfect_square<HashFcn>(key); }
uint32_t size() const { return MPHIndex::perfect_hash_size(); }
};
template <class Key, class HashFcn>
struct FlexibleMPHIndex<false, false, Key, HashFcn>
: public SimpleMPHIndex<Key, HashFcn> {
FlexibleMPHIndex() : SimpleMPHIndex<Key, HashFcn>(false) {}
uint32_t index(const Key& key) const {
return MPHIndex::perfect_hash<HashFcn>(key); }
uint32_t size() const { return MPHIndex::perfect_hash_size(); }
};
// From a trade-off perspective this case does not make much sense.
// template <class Key, class HashFcn>
// class FlexibleMPHIndex<true, true, Key, HashFcn>
} // namespace cxxmph
#endif // __CXXMPH_MPH_INDEX_H__

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#include <algorithm>
#include <cassert>
#include <string>
#include <vector>
#include "mph_index.h"
using std::string;
using std::vector;
using namespace cxxmph;
int main(int argc, char** argv) {
srand(1);
vector<string> keys;
keys.push_back("davi");
keys.push_back("paulo");
keys.push_back("joao");
keys.push_back("maria");
keys.push_back("bruno");
keys.push_back("paula");
keys.push_back("diego");
keys.push_back("diogo");
keys.push_back("algume");
SimpleMPHIndex<string> mph_index;
if (!mph_index.Reset(keys.begin(), keys.end(), keys.size())) { exit(-1); }
vector<int> ids;
for (vector<int>::size_type i = 0; i < keys.size(); ++i) {
ids.push_back(mph_index.index(keys[i]));
cerr << " " << *(ids.end() - 1);
}
cerr << endl;
sort(ids.begin(), ids.end());
for (vector<int>::size_type i = 0; i < ids.size(); ++i) assert(ids[i] == static_cast<vector<int>::value_type>(i));
// Test serialization
vector<uint32_t> params;
dynamic_2bitset g;
vector<uint32_t> ranktable;
mph_index.swap(params, g, ranktable);
assert(mph_index.size() == 0);
mph_index.swap(params, g, ranktable);
assert(mph_index.size() == ids.size());
for (vector<int>::size_type i = 0; i < ids.size(); ++i) assert(ids[i] == static_cast<vector<int>::value_type>(i));
FlexibleMPHIndex<false, true, int64_t, seeded_hash<std::hash<int64_t>>::hash_function> square_empty;
auto id = square_empty.index(1);
FlexibleMPHIndex<false, false, int64_t, seeded_hash<std::hash<int64_t>>::hash_function> unordered_empty;
id ^= unordered_empty.index(1);
FlexibleMPHIndex<true, false, int64_t, seeded_hash<std::hash<int64_t>>::hash_function> minimal_empty;
id ^= minimal_empty.index(1);
}

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#ifndef __CXXMPH_MPH_MAP_H__
#define __CXXMPH_MPH_MAP_H__
// Implementation of the unordered associative mapping interface using a
// minimal perfect hash function.
//
// Since these are header-mostly libraries, make sure you compile your code
// with -DNDEBUG and -O3. The code requires a modern C++11 compiler.
//
// The container comes in 3 flavors, all in the cxxmph namespace and drop-in
// replacement for the popular classes with the same names.
// * dense_hash_map
// -> fast, uses more memory, 2.93 bits per bucket, ~50% occupation
// * unordered_map (aliases: hash_map, mph_map)
// -> middle ground, uses 2.93 bits per bucket, ~81% occupation
// * sparse_hash_map -> slower, uses 3.6 bits per bucket
// -> less fast, uses 3.6 bits per bucket, 100% occupation
//
// Those classes are not necessarily faster than their existing counterparts.
// Benchmark your code before using it. The larger the key, the larger the
// number of elements inserted, and the bigger the number of failed searches,
// the more likely those classes will outperform existing code.
//
// For large sets of urls (>100k), which are a somewhat expensive to compare, I
// found those class to be about 10%-50% faster than unordered_map.
#include <algorithm>
#include <iostream>
#include <limits>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include <utility> // for std::pair
#include "string_util.h"
#include "hollow_iterator.h"
#include "mph_bits.h"
#include "mph_index.h"
#include "seeded_hash.h"
namespace cxxmph {
using std::pair;
using std::make_pair;
using std::vector;
// Save on repetitive typing.
#define MPH_MAP_TMPL_SPEC \
template <bool minimal, bool square, \
class Key, class Data, class HashFcn, class EqualKey, class Alloc>
#define MPH_MAP_CLASS_SPEC mph_map_base<minimal, square, Key, Data, HashFcn, EqualKey, Alloc>
#define MPH_MAP_METHOD_DECL(r, m) MPH_MAP_TMPL_SPEC typename MPH_MAP_CLASS_SPEC::r MPH_MAP_CLASS_SPEC::m
#define MPH_MAP_INLINE_METHOD_DECL(r, m) MPH_MAP_TMPL_SPEC inline typename MPH_MAP_CLASS_SPEC::r MPH_MAP_CLASS_SPEC::m
template <bool minimal, bool square, class Key, class Data, class HashFcn = std::hash<Key>, class EqualKey = std::equal_to<Key>, class Alloc = std::allocator<Data> >
class mph_map_base {
public:
typedef Key key_type;
typedef Data data_type;
typedef pair<Key, Data> value_type;
typedef HashFcn hasher;
typedef EqualKey key_equal;
typedef typename vector<value_type>::pointer pointer;
typedef typename vector<value_type>::reference reference;
typedef typename vector<value_type>::const_reference const_reference;
typedef typename vector<value_type>::size_type size_type;
typedef typename vector<value_type>::difference_type difference_type;
typedef is_empty<const vector<value_type>> is_empty_type;
typedef hollow_iterator_base<typename vector<value_type>::iterator, is_empty_type> iterator;
typedef hollow_iterator_base<typename vector<value_type>::const_iterator, is_empty_type> const_iterator;
// For making macros simpler.
typedef void void_type;
typedef bool bool_type;
typedef pair<iterator, bool> insert_return_type;
mph_map_base();
~mph_map_base();
iterator begin();
iterator end();
const_iterator begin() const;
const_iterator end() const;
size_type size() const;
bool empty() const;
void clear();
void erase(iterator pos);
void erase(const key_type& k);
pair<iterator, bool> insert(const value_type& x);
inline iterator find(const key_type& k);
inline const_iterator find(const key_type& k) const;
typedef int32_t my_int32_t; // help macros
inline int32_t index(const key_type& k) const;
data_type& operator[](const key_type &k);
const data_type& operator[](const key_type &k) const;
size_type bucket_count() const { return index_.size() + slack_.bucket_count(); }
void rehash(size_type nbuckets /*ignored*/);
protected: // mimicking STL implementation
EqualKey equal_;
private:
template <typename iterator>
struct iterator_first : public iterator {
iterator_first(iterator it) : iterator(it) { }
const typename iterator::value_type::first_type& operator*() {
return this->iterator::operator*().first;
}
};
template <typename iterator>
iterator_first<iterator> make_iterator_first(iterator it) {
return iterator_first<iterator>(it);
}
void pack();
vector<value_type> values_;
vector<bool> present_;
FlexibleMPHIndex<minimal, square, Key, typename seeded_hash<HashFcn>::hash_function> index_;
// TODO(davi) optimize slack to use hash from index rather than calculate its own
typedef std::unordered_map<h128, uint32_t, h128::hash32> slack_type;
slack_type slack_;
size_type size_;
typename seeded_hash<HashFcn>::hash_function hasher128_;
};
MPH_MAP_TMPL_SPEC
bool operator==(const MPH_MAP_CLASS_SPEC& lhs, const MPH_MAP_CLASS_SPEC& rhs) {
return lhs.size() == rhs.size() && std::equal(lhs.begin(), lhs.end(), rhs.begin());
}
MPH_MAP_TMPL_SPEC MPH_MAP_CLASS_SPEC::mph_map_base() : size_(0) {
clear();
pack();
}
MPH_MAP_TMPL_SPEC MPH_MAP_CLASS_SPEC::~mph_map_base() { }
MPH_MAP_METHOD_DECL(insert_return_type, insert)(const value_type& x) {
auto it = find(x.first);
auto it_end = end();
if (it != it_end) return make_pair(it, false);
bool should_pack = false;
if (values_.capacity() == values_.size() && values_.size() > 256) {
should_pack = true;
}
values_.push_back(x);
present_.push_back(true);
++size_;
h128 h = hasher128_.hash128(x.first, 0);
if (slack_.find(h) != slack_.end()) should_pack = true; // unavoidable pack
else slack_.insert(std::make_pair(h, values_.size() - 1));
if (should_pack) pack();
it = find(x.first);
return make_pair(it, true);
}
MPH_MAP_METHOD_DECL(void_type, pack)() {
// CXXMPH_DEBUGLN("Packing %v values")(values_.size());
if (values_.empty()) return;
assert(std::unordered_set<key_type>(make_iterator_first(begin()), make_iterator_first(end())).size() == size());
bool success = index_.Reset(
make_iterator_first(begin()),
make_iterator_first(end()), size_);
if (!success) { exit(-1); }
vector<value_type> new_values(index_.size());
new_values.reserve(new_values.size() * 2);
vector<bool> new_present(index_.size(), false);
new_present.reserve(new_present.size() * 2);
for (iterator it = begin(), it_end = end(); it != it_end; ++it) {
size_type id = index_.index(it->first);
assert(id < index_.size());
assert(id < new_values.size());
new_values[id] = *it;
new_present[id] = true;
}
// fprintf(stderr, "Collision ratio: %f\n", collisions*1.0/size());
values_.swap(new_values);
present_.swap(new_present);
slack_type().swap(slack_);
}
MPH_MAP_METHOD_DECL(iterator, begin)() { return make_hollow(&values_, &present_, values_.begin()); }
MPH_MAP_METHOD_DECL(iterator, end)() { return make_solid(&values_, &present_, values_.end()); }
MPH_MAP_METHOD_DECL(const_iterator, begin)() const { return make_hollow(&values_, &present_, values_.begin()); }
MPH_MAP_METHOD_DECL(const_iterator, end)() const { return make_solid(&values_, &present_, values_.end()); }
MPH_MAP_METHOD_DECL(bool_type, empty)() const { return size_ == 0; }
MPH_MAP_METHOD_DECL(size_type, size)() const { return size_; }
MPH_MAP_METHOD_DECL(void_type, clear)() {
values_.clear();
present_.clear();
slack_.clear();
index_.clear();
size_ = 0;
}
MPH_MAP_METHOD_DECL(void_type, erase)(iterator pos) {
assert(pos.it_ - values_.begin() < present_.size());
assert(present_[pos.it_ - values_.begin()]);
present_[pos.it_ - values_.begin()] = false;
*pos = value_type();
--size_;
}
MPH_MAP_METHOD_DECL(void_type, erase)(const key_type& k) {
iterator it = find(k);
if (it == end()) return;
erase(it);
}
MPH_MAP_INLINE_METHOD_DECL(const_iterator, find)(const key_type& k) const {
auto idx = index(k);
typename vector<value_type>::const_iterator vit = values_.begin() + idx;
if (idx == -1 || !equal_(vit->first, k)) return end();
return make_solid(&values_, &present_, vit);;
}
MPH_MAP_INLINE_METHOD_DECL(iterator, find)(const key_type& k) {
auto idx = index(k);
typename vector<value_type>::iterator vit = values_.begin() + idx;
if (idx == -1 || !equal_(vit->first, k)) return end();
return make_solid(&values_, &present_, vit);;
}
MPH_MAP_INLINE_METHOD_DECL(my_int32_t, index)(const key_type& k) const {
if (__builtin_expect(!slack_.empty(), 0)) {
auto sit = slack_.find(hasher128_.hash128(k, 0));
if (sit != slack_.end()) return sit->second;
}
if (__builtin_expect(index_.size(), 1)) {
auto id = index_.index(k);
if (__builtin_expect(present_[id], true)) return id;
}
return -1;
}
MPH_MAP_METHOD_DECL(data_type&, operator[])(const key_type& k) {
return insert(make_pair(k, data_type())).first->second;
}
MPH_MAP_METHOD_DECL(void_type, rehash)(size_type /*nbuckets*/) {
pack();
vector<value_type>(values_.begin(), values_.end()).swap(values_);
vector<bool>(present_.begin(), present_.end()).swap(present_);
slack_type().swap(slack_);
}
#define MPH_MAP_PREAMBLE template <class Key, class Data,\
class HashFcn = std::hash<Key>, class EqualKey = std::equal_to<Key>,\
class Alloc = std::allocator<Data> >
MPH_MAP_PREAMBLE class mph_map : public mph_map_base<
false, false, Key, Data, HashFcn, EqualKey, Alloc> {};
MPH_MAP_PREAMBLE class unordered_map : public mph_map_base<
false, false, Key, Data, HashFcn, EqualKey, Alloc> {};
MPH_MAP_PREAMBLE class hash_map : public mph_map_base<
false, false, Key, Data, HashFcn, EqualKey, Alloc> {};
MPH_MAP_PREAMBLE class dense_hash_map : public mph_map_base<
false, true, Key, Data, HashFcn, EqualKey, Alloc> {};
MPH_MAP_PREAMBLE class sparse_hash_map : public mph_map_base<
true, false, Key, Data, HashFcn, EqualKey, Alloc> {};
#undef MPH_MAP_TMPL_SPEC
#undef MPH_MAP_CLASS_SPEC
#undef MPH_MAP_METHOD_DECL
#undef MPH_MAP_INLINE_METHOD_DECL
#undef MPH_MAP_PREAMBLE
} // namespace cxxmph
#endif // __CXXMPH_MPH_MAP_H__

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#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <string>
#include "mph_map.h"
#include "map_tester.h"
#include "test.h"
using namespace cxxmph;
typedef MapTester<mph_map> Tester;
CXXMPH_CXX_TEST_CASE(empty_find, Tester::empty_find);
CXXMPH_CXX_TEST_CASE(empty_erase, Tester::empty_erase);
CXXMPH_CXX_TEST_CASE(small_insert, Tester::small_insert);
CXXMPH_CXX_TEST_CASE(large_insert, Tester::large_insert);
CXXMPH_CXX_TEST_CASE(small_search, Tester::small_search);
CXXMPH_CXX_TEST_CASE(default_search, Tester::default_search);
CXXMPH_CXX_TEST_CASE(large_search, Tester::large_search);
CXXMPH_CXX_TEST_CASE(string_search, Tester::string_search);
CXXMPH_CXX_TEST_CASE(rehash_zero, Tester::rehash_zero);
CXXMPH_CXX_TEST_CASE(rehash_size, Tester::rehash_size);
CXXMPH_CXX_TEST_CASE(erase_value, Tester::erase_value);
CXXMPH_CXX_TEST_CASE(erase_iterator, Tester::erase_iterator);

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#ifndef __CXXMPH_SEEDED_HASH_H__
#define __CXXMPH_SEEDED_HASH_H__
#include <stdint.h> // for uint32_t and friends
#include <cstdlib>
#include <cstring>
#include <unordered_map> // for std::hash
#include "MurmurHash3.h"
#include "stringpiece.h"
namespace cxxmph {
struct h128 {
const uint32_t& operator[](uint8_t i) const { return uint32[i]; }
uint32_t& operator[](uint8_t i) { return uint32[i]; }
uint64_t get64(bool second) const { return (static_cast<uint64_t>(uint32[second << 1]) << 32) | uint32[1 + (second << 1)]; }
void set64(uint64_t v, bool second) { uint32[second << 1] = v >> 32; uint32[1+(second<<1)] = ((v << 32) >> 32); }
bool operator==(const h128 rhs) const { return memcmp(uint32, rhs.uint32, sizeof(uint32)) == 0; }
uint32_t uint32[4];
struct hash32 { uint32_t operator()(const cxxmph::h128& h) const { return h[3]; } };
};
template <class HashFcn>
struct seeded_hash_function {
template <class Key>
uint32_t operator()(const Key& k, uint32_t seed) const {
uint32_t h;
uint32_t h0 = HashFcn()(k);
MurmurHash3_x86_32(reinterpret_cast<const void*>(&h0), 4, seed, &h);
return h;
}
template <class Key>
h128 hash128(const Key& k, uint32_t seed) const {
h128 h;
uint32_t h0 = HashFcn()(k);
MurmurHash3_x64_128(reinterpret_cast<const void*>(&h0), 4, seed, &h);
return h;
}
};
struct Murmur3 {
template<class Key>
uint32_t operator()(const Key& k) const {
uint32_t out;
MurmurHash3_x86_32(reinterpret_cast<const void*>(&k), sizeof(Key), 1 /* seed */, &out);
return out;
}
template <class Key>
h128 hash128(const Key& k) const {
h128 h;
MurmurHash3_x64_128(reinterpret_cast<const void*>(&k), sizeof(Key), 1 /* seed */, &h);
return h;
}
};
struct Murmur3StringPiece {
template <class Key>
uint32_t operator()(const Key& k) const {
StringPiece s(k);
uint32_t out;
MurmurHash3_x86_32(s.data(), s.length(), 1 /* seed */, &out);
return out;
}
template <class Key>
h128 hash128(const Key& k) const {
h128 h;
StringPiece s(k);
MurmurHash3_x64_128(s.data(), s.length(), 1 /* seed */, &h);
return h;
}
};
template <>
struct seeded_hash_function<Murmur3> {
template <class Key>
uint32_t operator()(const Key& k, uint32_t seed) const {
uint32_t out;
MurmurHash3_x86_32(reinterpret_cast<const void*>(&k), sizeof(Key), seed, &out);
return out;
}
template <class Key>
h128 hash128(const Key& k, uint32_t seed) const {
h128 h;
MurmurHash3_x64_128(reinterpret_cast<const void*>(&k), sizeof(Key), seed, &h);
return h;
}
};
template <>
struct seeded_hash_function<Murmur3StringPiece> {
template <class Key>
uint32_t operator()(const Key& k, uint32_t seed) const {
StringPiece s(k);
uint32_t out;
MurmurHash3_x86_32(s.data(), s.length(), seed, &out);
return out;
}
template <class Key>
h128 hash128(const Key& k, uint32_t seed) const {
h128 h;
StringPiece s(k);
MurmurHash3_x64_128(s.data(), s.length(), seed, &h);
return h;
}
};
template <class HashFcn> struct seeded_hash
{ typedef seeded_hash_function<HashFcn> hash_function; };
// Use Murmur3 instead for all types defined in std::hash, plus
// std::string which is commonly extended.
template <> struct seeded_hash<std::hash<char*> >
{ typedef seeded_hash_function<Murmur3StringPiece> hash_function; };
template <> struct seeded_hash<std::hash<const char*> >
{ typedef seeded_hash_function<Murmur3StringPiece> hash_function; };
template <> struct seeded_hash<std::hash<std::string> >
{ typedef seeded_hash_function<Murmur3StringPiece> hash_function; };
template <> struct seeded_hash<std::hash<cxxmph::StringPiece> >
{ typedef seeded_hash_function<Murmur3StringPiece> hash_function; };
template <> struct seeded_hash<std::hash<char> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<unsigned char> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<short> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<unsigned short> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<int> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<unsigned int> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<long> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<unsigned long> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<long long> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
template <> struct seeded_hash<std::hash<unsigned long long> >
{ typedef seeded_hash_function<Murmur3> hash_function; };
} // namespace cxxmph
#endif // __CXXMPH_SEEDED_HASH_H__

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#include "seeded_hash.h"
#include <unordered_map>
#include <string>
#include <iostream>
using std::cerr;
using std::endl;
using std::string;
using std::unordered_map;
using namespace cxxmph;
int main(int argc, char** argv) {
auto hasher = seeded_hash_function<Murmur3StringPiece>();
string key1("0");
string key2("1");
auto h1 = hasher.hash128(key1, 1);
auto h2 = hasher.hash128(key2, 1);
if (h1 == h2) {
fprintf(stderr, "unexpected murmur collision\n");
exit(-1);
}
unordered_map<uint64_t, int> g;
for (int i = 0; i < 1000; ++i) g[i] = i;
for (int i = 0; i < 1000; ++i) if (g[i] != i) exit(-1);
auto inthasher = seeded_hash_function<std::hash<uint64_t>>();
unordered_map<h128, uint64_t, h128::hash32> g2;
for (uint64_t i = 0; i < 1000; ++i) {
auto h = inthasher.hash128(i, 0);
if (g2.find(h) != g2.end()) {
std::cerr << "Incorrectly found " << i << std::endl;
exit(-1);
}
if (h128::hash32()(h) != h[3]) {
cerr << "Buggy hash method." << endl;
exit(-1);
}
auto h2 = inthasher.hash128(i, 0);
if (!(h == h2)) {
cerr << "h 64(0) " << h.get64(0) << " h 64(1) " << h.get64(1) << endl;
cerr << " h2 64(0) " << h2.get64(0) << " h2 64(1) " << h2.get64(1) << endl;
cerr << "Broken equality for h128" << endl;
exit(-1);
}
if (h128::hash32()(h) != h128::hash32()(h2)) {
cerr << "Inconsistent hash method." << endl;
exit(-1);
}
g2[h] = i;
if (g2.find(h) == g2.end()) {
std::cerr << "Incorrectly missed " << i << std::endl;
exit(-1);
}
}
for (uint64_t i = 0; i < 1000; ++i) if (g2[inthasher.hash128(i, 0)] != i) exit(-1);
}

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#include "string_util.h"
#include <cassert>
#include <cstdint>
#include <iostream>
#include <string>
using namespace std;
namespace cxxmph {
bool stream_printf(
const std::string& format_string, uint32_t offset, std::ostream* out) {
if (offset == format_string.length()) return true;
assert(offset < format_string.length());
cerr << "length:" << format_string.length() << endl;
cerr << "offset:" << offset << endl;
auto txt = format_string.substr(offset, format_string.length() - offset);
*out << txt;
return true;
}
} // namespace cxxmph

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#ifndef __CXXMPH_STRING_UTIL_H__
#define __CXXMPH_STRING_UTIL_H__
// Helper functions for string formatting and terminal output. Should be used
// only for debugging and tests, since performance was not a concern.
// Implemented using variadic templates because it is cool.
//
// Adds the extra format %v to the printf formatting language. Uses the method
// cxxmph::tostr to implement custom printers and fallback to operator
// ostream::operator<< otherwise.
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <sstream>
#include <utility>
#include <vector>
#define CXXMPH_DEBUGLN(fmt) variadic_print(__FILE__, __LINE__, &std::cerr, fmt)
#define CXXMPH_INFOLN(fmt) variadic_print(__FILE__, __LINE__, &std::cout, fmt)
namespace cxxmph {
using std::pair;
using std::string;
using std::ostream;
using std::vector;
template <class T> void tostr(ostream *out, const T& v) {
*out << v;
}
inline void tostr(std::ostream* out, uint8_t v) {
*out << static_cast<uint32_t>(v);
}
template <class V>
inline void tostr(ostream* out, const vector<V>& v) {
*out << "[";
for (uint32_t i = 0; i < v.size(); ++i) {
tostr(out, v[1]);
if (i != v.size() - 1)*out << " ";
}
*out << "]";
}
template <class F, class S>
inline void tostr(ostream* out, const pair<F, S>& v) {
*out << "(";
tostr(out, v.first);
*out << ",";
tostr(out, v.second);
*out << ")";
}
bool stream_printf(
const std::string& format_string, uint32_t offset, std::ostream* out);
template <bool ispod> struct pod_snprintf {};
template <> struct pod_snprintf<false> {
template <class T>
int operator()(char*, size_t, const char*, const T&) {
return -1;
}
};
template <> struct pod_snprintf<true> {
template <class T>
int operator()(char* str, size_t size, const char* format, const T& v) {
return snprintf(str, size, format, v);
}
};
template <typename T, typename... Args>
bool stream_printf(const std::string& format_string, uint32_t offset,
std::ostream* out, const T& value, Args&&... args) {
auto txt = format_string.c_str() + offset;
while (*txt) {
auto b = txt;
for (; *txt != '%'; ++txt);
if (*(txt + 1) == '%') ++txt;
else if (txt == b) break;
*out << string(b, txt - b);
if (*(txt - 1) == '%') ++txt;
}
auto fmt = txt + 1;
while (*fmt && *fmt != '%') ++fmt;
if (strncmp(txt, "%v", 2) == 0) {
txt += 2;
tostr(out, value);
if (txt != fmt) *out << string(txt, fmt);
} else {
char buf[256]; // Is this enough?
auto n = pod_snprintf<std::is_pod<T>::value>()(
buf, 256, std::string(txt, fmt).c_str(), value);
if (n < 0) return false;
*out << buf;
}
return stream_printf(format_string, fmt - format_string.c_str(), out,
std::forward<Args>(args)...);
}
template <typename... Args>
std::string format(const std::string& format_string, Args&&... args) {
std::ostringstream out;
if (!stream_printf(format_string, 0, &out, std::forward<Args>(args)...)) {
return std::string();
};
return out.str();
}
template <typename... Args>
void infoln(const std::string& format_string, Args&&... args) {
stream_printf(format_string + "\n", 0, &std::cout, std::forward<Args>(args)...);
}
struct variadic_print {
variadic_print(const std::string& file, uint32_t line, std::ostream* out,
const std::string& format_line)
: file_(file), line_(line), out_(out), format_line_(format_line) {}
template <typename... Args>
void operator()(Args&&... args) {
std::string fancy_format = "%v:%d: ";
fancy_format += format_line_ + "\n";
stream_printf(fancy_format, 0, out_, file_, line_, std::forward<Args>(args)...);
}
const std::string& file_;
const uint32_t& line_;
std::ostream* out_;
const std::string& format_line_;
};
} // namespace cxxmph
#endif // __CXXMPH_STRING_UTIL_H__

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#include "string_util.h"
#include "test.h"
using namespace cxxmph;
bool test_format() {
string expected = " %% 4 foo 0x0A bar ";
string foo = "foo";
string fmt = format(" %%%% %v %v 0x%.2X bar ", 4, foo, 10);
fail_unless(fmt == expected, "expected\n-%s-\n got \n-%s-", expected.c_str(), fmt.c_str());
return true;
}
bool test_infoln() {
infoln(string("%s:%d: MY INFO LINE"), __FILE__, __LINE__);
return true;
}
bool test_macro() {
CXXMPH_DEBUGLN("here i am")();
return true;
}
CXXMPH_TEST_CASE(test_format)
CXXMPH_TEST_CASE(test_infoln)
CXXMPH_TEST_CASE(test_macro)

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// Copyright 2001-2010 The RE2 Authors. All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// A string-like object that points to a sized piece of memory.
//
// Functions or methods may use const StringPiece& parameters to accept either
// a "const char*" or a "string" value that will be implicitly converted to
// a StringPiece. The implicit conversion means that it is often appropriate
// to include this .h file in other files rather than forward-declaring
// StringPiece as would be appropriate for most other Google classes.
//
// Systematic usage of StringPiece is encouraged as it will reduce unnecessary
// conversions from "const char*" to "string" and back again.
//
//
// Arghh! I wish C++ literals were "string".
#ifndef CXXMPH_STRINGPIECE_H__
#define CXXMPH_STRINGPIECE_H__
#include <cstddef>
#include <string.h>
#include <iosfwd>
#include <string>
namespace cxxmph {
class StringPiece {
private:
const char* ptr_;
int length_;
public:
// We provide non-explicit singleton constructors so users can pass
// in a "const char*" or a "string" wherever a "StringPiece" is
// expected.
StringPiece() : ptr_(NULL), length_(0) { }
StringPiece(const char* str)
: ptr_(str), length_((str == NULL) ? 0 : static_cast<int>(strlen(str))) { }
StringPiece(const std::string& str)
: ptr_(str.data()), length_(static_cast<int>(str.size())) { }
StringPiece(const char* offset, int len) : ptr_(offset), length_(len) { }
// data() may return a pointer to a buffer with embedded NULs, and the
// returned buffer may or may not be null terminated. Therefore it is
// typically a mistake to pass data() to a routine that expects a NUL
// terminated string.
const char* data() const { return ptr_; }
int size() const { return length_; }
int length() const { return length_; }
bool empty() const { return length_ == 0; }
void clear() { ptr_ = NULL; length_ = 0; }
void set(const char* data, int len) { ptr_ = data; length_ = len; }
void set(const char* str) {
ptr_ = str;
if (str != NULL)
length_ = static_cast<int>(strlen(str));
else
length_ = 0;
}
void set(const void* data, int len) {
ptr_ = reinterpret_cast<const char*>(data);
length_ = len;
}
char operator[](int i) const { return ptr_[i]; }
void remove_prefix(int n) {
ptr_ += n;
length_ -= n;
}
void remove_suffix(int n) {
length_ -= n;
}
int compare(const StringPiece& x) const {
int r = memcmp(ptr_, x.ptr_, std::min(length_, x.length_));
if (r == 0) {
if (length_ < x.length_) r = -1;
else if (length_ > x.length_) r = +1;
}
return r;
}
std::string as_string() const {
return std::string(data(), size());
}
// We also define ToString() here, since many other string-like
// interfaces name the routine that converts to a C++ string
// "ToString", and it's confusing to have the method that does that
// for a StringPiece be called "as_string()". We also leave the
// "as_string()" method defined here for existing code.
std::string ToString() const {
return std::string(data(), size());
}
void CopyToString(std::string* target) const;
void AppendToString(std::string* target) const;
// Does "this" start with "x"
bool starts_with(const StringPiece& x) const {
return ((length_ >= x.length_) &&
(memcmp(ptr_, x.ptr_, x.length_) == 0));
}
// Does "this" end with "x"
bool ends_with(const StringPiece& x) const {
return ((length_ >= x.length_) &&
(memcmp(ptr_ + (length_-x.length_), x.ptr_, x.length_) == 0));
}
// standard STL container boilerplate
typedef char value_type;
typedef const char* pointer;
typedef const char& reference;
typedef const char& const_reference;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
static const size_type npos;
typedef const char* const_iterator;
typedef const char* iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
iterator begin() const { return ptr_; }
iterator end() const { return ptr_ + length_; }
const_reverse_iterator rbegin() const {
return const_reverse_iterator(ptr_ + length_);
}
const_reverse_iterator rend() const {
return const_reverse_iterator(ptr_);
}
// STLS says return size_type, but Google says return int
int max_size() const { return length_; }
int capacity() const { return length_; }
int copy(char* buf, size_type n, size_type pos = 0) const;
int find(const StringPiece& s, size_type pos = 0) const;
int find(char c, size_type pos = 0) const;
int rfind(const StringPiece& s, size_type pos = npos) const;
int rfind(char c, size_type pos = npos) const;
StringPiece substr(size_type pos, size_type n = npos) const;
};
inline bool operator==(const StringPiece& x, const StringPiece& y) {
return x.length() == y.length() && memcmp(x.data(), y.data(), x.length()) == 0;
}
inline bool operator!=(const StringPiece& x, const StringPiece& y) {
return !(x == y);
}
inline bool operator<(const StringPiece& x, const StringPiece& y) {
const int r = memcmp(x.data(), y.data(),
std::min(x.size(), y.size()));
return ((r < 0) || ((r == 0) && (x.size() < y.size())));
}
inline bool operator>(const StringPiece& x, const StringPiece& y) {
return y < x;
}
inline bool operator<=(const StringPiece& x, const StringPiece& y) {
return !(x > y);
}
inline bool operator>=(const StringPiece& x, StringPiece& y) {
return !(x < y);
}
} // namespace cxxmph
// allow StringPiece to be logged
inline std::ostream& operator<<(std::ostream& o, const cxxmph::StringPiece& piece) {
o << piece.as_string(); return o;
}
#endif // CXXMPH_STRINGPIECE_H__

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#include <cstdlib> // For EXIT_SUCCESS, EXIT_FAILURE
#include "test.h"
Suite* global_suite() {
static Suite* gs = suite_create("cxxmph_test_suite");
return gs;
}
TCase* global_tc_core() {
static TCase* gtc = tcase_create("Core");
return gtc;
}
int main (void) {
suite_add_tcase(global_suite(), global_tc_core());
int number_failed;
SRunner *sr = srunner_create (global_suite());
srunner_run_all (sr, CK_NORMAL);
number_failed = srunner_ntests_failed (sr);
srunner_free (sr);
return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}

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#ifndef __CXXMPH_TEST_H__
#define __CXXMPH_TEST_H__
// Thin wrapper on top of check.h to get rid of boilerplate in tests. Assumes a
// single test suite and test case per file, with each fixture represented by a
// parameter-less boolean function.
//
// The check.h header macro-clashes with c++ libraries so this file needs to be
// included last.
#include <check.h>
#include <stdio.h>
Suite* global_suite();
TCase* global_tc_core();
// Creates a new test case calling boolean_function. Name must be a valid,
// unique c identifier when prefixed with tc_.
#define CXXMPH_CXX_TEST_CASE(name, boolean_function) \
START_TEST(tc_ ## name) \
{ fail_unless(boolean_function()); } END_TEST \
static TestCase global_cxxmph_tc_ ## name(tc_ ## name);
#define CXXMPH_TEST_CASE(name) CXXMPH_CXX_TEST_CASE(name, name)
struct TestCase {
TestCase(void (*f)(int)) {
tcase_add_test(global_tc_core(), f);
}
};
#endif // __CXXMPH_TEST_H__

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#include "test.h"
bool tautology() { return true; }
CXXMPH_TEST_CASE(tautology)

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#include <cassert>
#include <limits>
#include <iostream>
#include "trigraph.h"
using std::cerr;
using std::endl;
using std::vector;
namespace {
static const uint32_t kInvalidEdge = std::numeric_limits<uint32_t>::max();
}
namespace cxxmph {
TriGraph::TriGraph(uint32_t nvertices, uint32_t nedges)
: nedges_(0),
edges_(nedges),
next_edge_(nedges),
first_edge_(nvertices, kInvalidEdge),
vertex_degree_(nvertices, 0) { }
TriGraph::~TriGraph() {}
void TriGraph::ExtractEdgesAndClear(vector<Edge>* edges) {
vector<Edge>().swap(next_edge_);
vector<uint32_t>().swap(first_edge_);
vector<uint8_t>().swap(vertex_degree_);
nedges_ = 0;
edges->swap(edges_);
}
void TriGraph::AddEdge(const Edge& edge) {
edges_[nedges_] = edge;
assert(first_edge_.size() > edge[0]);
assert(first_edge_.size() > edge[1]);
assert(first_edge_.size() > edge[0]);
assert(first_edge_.size() > edge[1]);
assert(first_edge_.size() > edge[2]);
assert(next_edge_.size() > nedges_);
next_edge_[nedges_] = Edge(
first_edge_[edge[0]], first_edge_[edge[1]], first_edge_[edge[2]]);
first_edge_[edge[0]] = first_edge_[edge[1]] = first_edge_[edge[2]] = nedges_;
++vertex_degree_[edge[0]];
++vertex_degree_[edge[1]];
++vertex_degree_[edge[2]];
++nedges_;
}
void TriGraph::RemoveEdge(uint32_t current_edge) {
// cerr << "Removing edge " << current_edge << " from " << nedges_ << " existing edges " << endl;
for (int i = 0; i < 3; ++i) {
uint32_t vertex = edges_[current_edge][i];
uint32_t edge1 = first_edge_[vertex];
uint32_t edge2 = kInvalidEdge;
uint32_t j = 0;
while (edge1 != current_edge && edge1 != kInvalidEdge) {
edge2 = edge1;
if (edges_[edge1][0] == vertex) j = 0;
else if (edges_[edge1][1] == vertex) j = 1;
else j = 2;
edge1 = next_edge_[edge1][j];
}
assert(edge1 != kInvalidEdge);
if (edge2 != kInvalidEdge) next_edge_[edge2][j] = next_edge_[edge1][i];
else first_edge_[vertex] = next_edge_[edge1][i];
--vertex_degree_[vertex];
}
}
void TriGraph::DebugGraph() const {
uint32_t i;
for(i = 0; i < edges_.size(); i++){
cerr << i << " " << edges_[i][0] << " " << edges_[i][1] << " " << edges_[i][2]
<< " nexts " << next_edge_[i][0] << " " << next_edge_[i][1] << " " << next_edge_[i][2] << endl;
}
for(i = 0; i < first_edge_.size();i++){
cerr << "first for vertice " <<i << " " << first_edge_[i] << endl;
}
}
} // namespace cxxmph

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#ifndef __CXXMPH_TRIGRAPH_H__
#define __CXXMPH_TRIGRAPH_H__
// Build a trigraph using a memory efficient representation.
//
// Prior knowledge of the number of edges and vertices for the graph is
// required. For each vertex, we store how many edges touch it (degree) and the
// index of the first edge in the vector of triples representing the edges.
#include <stdint.h> // for uint32_t and friends
#include <vector>
namespace cxxmph {
class TriGraph {
public:
struct Edge {
Edge() { }
Edge(uint32_t v0, uint32_t v1, uint32_t v2) {
vertices[0] = v0;
vertices[1] = v1;
vertices[2] = v2;
}
uint32_t& operator[](uint8_t v) { return vertices[v]; }
const uint32_t& operator[](uint8_t v) const { return vertices[v]; }
uint32_t vertices[3];
};
TriGraph(uint32_t nedges, uint32_t nvertices);
~TriGraph();
void AddEdge(const Edge& edge);
void RemoveEdge(uint32_t edge_id);
void ExtractEdgesAndClear(std::vector<Edge>* edges);
void DebugGraph() const;
const std::vector<Edge>& edges() const { return edges_; }
const std::vector<uint8_t>& vertex_degree() const { return vertex_degree_; }
const std::vector<uint32_t>& first_edge() const { return first_edge_; }
private:
uint32_t nedges_; // total number of edges
std::vector<Edge> edges_;
std::vector<Edge> next_edge_; // for implementing removal
std::vector<uint32_t> first_edge_; // the first edge for this vertex
std::vector<uint8_t> vertex_degree_; // number of edges for this vertex
};
} // namespace cxxmph
#endif // __CXXMPH_TRIGRAPH_H__

22
cmph-2.0.2/cxxmph/trigraph_test.cc Normal file
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@ -0,0 +1,22 @@
#include <cassert>
#include "trigraph.h"
using cxxmph::TriGraph;
int main(int argc, char** argv) {
TriGraph g(4, 2);
g.AddEdge(TriGraph::Edge(0, 1, 2));
g.AddEdge(TriGraph::Edge(1, 3, 2));
assert(g.vertex_degree()[0] == 1);
assert(g.vertex_degree()[1] == 2);
assert(g.vertex_degree()[2] == 2);
assert(g.vertex_degree()[3] == 1);
g.RemoveEdge(0);
assert(g.vertex_degree()[0] == 0);
assert(g.vertex_degree()[1] == 1);
assert(g.vertex_degree()[2] == 1);
assert(g.vertex_degree()[3] == 1);
std::vector<TriGraph::Edge> edges;
g.ExtractEdgesAndClear(&edges);
}

791
cmph-2.0.2/depcomp Executable file
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@ -0,0 +1,791 @@
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects
scriptversion=2018-03-07.03; # UTC
# Copyright (C) 1999-2018 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.
# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
case $1 in
'')
echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.
Environment variables:
depmode Dependency tracking mode.
source Source file read by 'PROGRAMS ARGS'.
object Object file output by 'PROGRAMS ARGS'.
DEPDIR directory where to store dependencies.
depfile Dependency file to output.
tmpdepfile Temporary file to use when outputting dependencies.
libtool Whether libtool is used (yes/no).
Report bugs to <bug-automake@gnu.org>.
EOF
exit $?
;;
-v | --v*)
echo "depcomp $scriptversion"
exit $?
;;
esac
# Get the directory component of the given path, and save it in the
# global variables '$dir'. Note that this directory component will
# be either empty or ending with a '/' character. This is deliberate.
set_dir_from ()
{
case $1 in
*/*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
*) dir=;;
esac
}
# Get the suffix-stripped basename of the given path, and save it the
# global variable '$base'.
set_base_from ()
{
base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
}
# If no dependency file was actually created by the compiler invocation,
# we still have to create a dummy depfile, to avoid errors with the
# Makefile "include basename.Plo" scheme.
make_dummy_depfile ()
{
echo "#dummy" > "$depfile"
}
# Factor out some common post-processing of the generated depfile.
# Requires the auxiliary global variable '$tmpdepfile' to be set.
aix_post_process_depfile ()
{
# If the compiler actually managed to produce a dependency file,
# post-process it.
if test -f "$tmpdepfile"; then
# Each line is of the form 'foo.o: dependency.h'.
# Do two passes, one to just change these to
# $object: dependency.h
# and one to simply output
# dependency.h:
# which is needed to avoid the deleted-header problem.
{ sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
} > "$depfile"
rm -f "$tmpdepfile"
else
make_dummy_depfile
fi
}
# A tabulation character.
tab=' '
# A newline character.
nl='
'
# Character ranges might be problematic outside the C locale.
# These definitions help.
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
lower=abcdefghijklmnopqrstuvwxyz
digits=0123456789
alpha=${upper}${lower}
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
echo "depcomp: Variables source, object and depmode must be set" 1>&2
exit 1
fi
# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
rm -f "$tmpdepfile"
# Avoid interferences from the environment.
gccflag= dashmflag=
# Some modes work just like other modes, but use different flags. We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write. Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
# HP compiler uses -M and no extra arg.
gccflag=-M
depmode=gcc
fi
if test "$depmode" = dashXmstdout; then
# This is just like dashmstdout with a different argument.
dashmflag=-xM
depmode=dashmstdout
fi
cygpath_u="cygpath -u -f -"
if test "$depmode" = msvcmsys; then
# This is just like msvisualcpp but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvisualcpp
fi
if test "$depmode" = msvc7msys; then
# This is just like msvc7 but w/o cygpath translation.
# Just convert the backslash-escaped backslashes to single forward
# slashes to satisfy depend.m4
cygpath_u='sed s,\\\\,/,g'
depmode=msvc7
fi
if test "$depmode" = xlc; then
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
gccflag=-qmakedep=gcc,-MF
depmode=gcc
fi
case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want. Yay! Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff. Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am. Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
for arg
do
case $arg in
-c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
*) set fnord "$@" "$arg" ;;
esac
shift # fnord
shift # $arg
done
"$@"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
mv "$tmpdepfile" "$depfile"
;;
gcc)
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
## (see the conditional assignment to $gccflag above).
## There are various ways to get dependency output from gcc. Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
## up in a subdir. Having to rename by hand is ugly.
## (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
## -MM, not -M (despite what the docs say). Also, it might not be
## supported by the other compilers which use the 'gcc' depmode.
## - Using -M directly means running the compiler twice (even worse
## than renaming).
if test -z "$gccflag"; then
gccflag=-MD,
fi
"$@" -Wp,"$gccflag$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The second -e expression handles DOS-style file names with drive
# letters.
sed -e 's/^[^:]*: / /' \
-e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the "deleted header file" problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header). We avoid this by adding
## dummy dependencies for each header file. Too bad gcc doesn't do
## this for us directly.
## Some versions of gcc put a space before the ':'. On the theory
## that the space means something, we add a space to the output as
## well. hp depmode also adds that space, but also prefixes the VPATH
## to the object. Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
sgi)
if test "$libtool" = yes; then
"$@" "-Wp,-MDupdate,$tmpdepfile"
else
"$@" -MDupdate "$tmpdepfile"
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
echo "$object : \\" > "$depfile"
# Clip off the initial element (the dependent). Don't try to be
# clever and replace this with sed code, as IRIX sed won't handle
# lines with more than a fixed number of characters (4096 in
# IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
# the IRIX cc adds comments like '#:fec' to the end of the
# dependency line.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
| tr "$nl" ' ' >> "$depfile"
echo >> "$depfile"
# The second pass generates a dummy entry for each header file.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
>> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile"
;;
xlc)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
aix)
# The C for AIX Compiler uses -M and outputs the dependencies
# in a .u file. In older versions, this file always lives in the
# current directory. Also, the AIX compiler puts '$object:' at the
# start of each line; $object doesn't have directory information.
# Version 6 uses the directory in both cases.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.u
tmpdepfile2=$base.u
tmpdepfile3=$dir.libs/$base.u
"$@" -Wc,-M
else
tmpdepfile1=$dir$base.u
tmpdepfile2=$dir$base.u
tmpdepfile3=$dir$base.u
"$@" -M
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
aix_post_process_depfile
;;
tcc)
# tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
# FIXME: That version still under development at the moment of writing.
# Make that this statement remains true also for stable, released
# versions.
# It will wrap lines (doesn't matter whether long or short) with a
# trailing '\', as in:
#
# foo.o : \
# foo.c \
# foo.h \
#
# It will put a trailing '\' even on the last line, and will use leading
# spaces rather than leading tabs (at least since its commit 0394caf7
# "Emit spaces for -MD").
"$@" -MD -MF "$tmpdepfile"
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
# We have to change lines of the first kind to '$object: \'.
sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
# And for each line of the second kind, we have to emit a 'dep.h:'
# dummy dependency, to avoid the deleted-header problem.
sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
rm -f "$tmpdepfile"
;;
## The order of this option in the case statement is important, since the
## shell code in configure will try each of these formats in the order
## listed in this file. A plain '-MD' option would be understood by many
## compilers, so we must ensure this comes after the gcc and icc options.
pgcc)
# Portland's C compiler understands '-MD'.
# Will always output deps to 'file.d' where file is the root name of the
# source file under compilation, even if file resides in a subdirectory.
# The object file name does not affect the name of the '.d' file.
# pgcc 10.2 will output
# foo.o: sub/foo.c sub/foo.h
# and will wrap long lines using '\' :
# foo.o: sub/foo.c ... \
# sub/foo.h ... \
# ...
set_dir_from "$object"
# Use the source, not the object, to determine the base name, since
# that's sadly what pgcc will do too.
set_base_from "$source"
tmpdepfile=$base.d
# For projects that build the same source file twice into different object
# files, the pgcc approach of using the *source* file root name can cause
# problems in parallel builds. Use a locking strategy to avoid stomping on
# the same $tmpdepfile.
lockdir=$base.d-lock
trap "
echo '$0: caught signal, cleaning up...' >&2
rmdir '$lockdir'
exit 1
" 1 2 13 15
numtries=100
i=$numtries
while test $i -gt 0; do
# mkdir is a portable test-and-set.
if mkdir "$lockdir" 2>/dev/null; then
# This process acquired the lock.
"$@" -MD
stat=$?
# Release the lock.
rmdir "$lockdir"
break
else
# If the lock is being held by a different process, wait
# until the winning process is done or we timeout.
while test -d "$lockdir" && test $i -gt 0; do
sleep 1
i=`expr $i - 1`
done
fi
i=`expr $i - 1`
done
trap - 1 2 13 15
if test $i -le 0; then
echo "$0: failed to acquire lock after $numtries attempts" >&2
echo "$0: check lockdir '$lockdir'" >&2
exit 1
fi
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
# Each line is of the form `foo.o: dependent.h',
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
# Do two passes, one to just change these to
# `$object: dependent.h' and one to simply `dependent.h:'.
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
hp2)
# The "hp" stanza above does not work with aCC (C++) and HP's ia64
# compilers, which have integrated preprocessors. The correct option
# to use with these is +Maked; it writes dependencies to a file named
# 'foo.d', which lands next to the object file, wherever that
# happens to be.
# Much of this is similar to the tru64 case; see comments there.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir.libs/$base.d
"$@" -Wc,+Maked
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
"$@" +Maked
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
do
test -f "$tmpdepfile" && break
done
if test -f "$tmpdepfile"; then
sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
# Add 'dependent.h:' lines.
sed -ne '2,${
s/^ *//
s/ \\*$//
s/$/:/
p
}' "$tmpdepfile" >> "$depfile"
else
make_dummy_depfile
fi
rm -f "$tmpdepfile" "$tmpdepfile2"
;;
tru64)
# The Tru64 compiler uses -MD to generate dependencies as a side
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
# dependencies in 'foo.d' instead, so we check for that too.
# Subdirectories are respected.
set_dir_from "$object"
set_base_from "$object"
if test "$libtool" = yes; then
# Libtool generates 2 separate objects for the 2 libraries. These
# two compilations output dependencies in $dir.libs/$base.o.d and
# in $dir$base.o.d. We have to check for both files, because
# one of the two compilations can be disabled. We should prefer
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
# automatically cleaned when .libs/ is deleted, while ignoring
# the former would cause a distcleancheck panic.
tmpdepfile1=$dir$base.o.d # libtool 1.5
tmpdepfile2=$dir.libs/$base.o.d # Likewise.
tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
"$@" -Wc,-MD
else
tmpdepfile1=$dir$base.d
tmpdepfile2=$dir$base.d
tmpdepfile3=$dir$base.d
"$@" -MD
fi
stat=$?
if test $stat -ne 0; then
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
exit $stat
fi
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
do
test -f "$tmpdepfile" && break
done
# Same post-processing that is required for AIX mode.
aix_post_process_depfile
;;
msvc7)
if test "$libtool" = yes; then
showIncludes=-Wc,-showIncludes
else
showIncludes=-showIncludes
fi
"$@" $showIncludes > "$tmpdepfile"
stat=$?
grep -v '^Note: including file: ' "$tmpdepfile"
if test $stat -ne 0; then
rm -f "$tmpdepfile"
exit $stat
fi
rm -f "$depfile"
echo "$object : \\" > "$depfile"
# The first sed program below extracts the file names and escapes
# backslashes for cygpath. The second sed program outputs the file
# name when reading, but also accumulates all include files in the
# hold buffer in order to output them again at the end. This only
# works with sed implementations that can handle large buffers.
sed < "$tmpdepfile" -n '
/^Note: including file: *\(.*\)/ {
s//\1/
s/\\/\\\\/g
p
}' | $cygpath_u | sort -u | sed -n '
s/ /\\ /g
s/\(.*\)/'"$tab"'\1 \\/p
s/.\(.*\) \\/\1:/
H
$ {
s/.*/'"$tab"'/
G
p
}' >> "$depfile"
echo >> "$depfile" # make sure the fragment doesn't end with a backslash
rm -f "$tmpdepfile"
;;
msvc7msys)
# This case exists only to let depend.m4 do its work. It works by
# looking at the text of this script. This case will never be run,
# since it is checked for above.
exit 1
;;
#nosideeffect)
# This comment above is used by automake to tell side-effect
# dependency tracking mechanisms from slower ones.
dashmstdout)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout, regardless of -o.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
test -z "$dashmflag" && dashmflag=-M
# Require at least two characters before searching for ':'
# in the target name. This is to cope with DOS-style filenames:
# a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
"$@" $dashmflag |
sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
rm -f "$depfile"
cat < "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process this sed invocation
# correctly. Breaking it into two sed invocations is a workaround.
tr ' ' "$nl" < "$tmpdepfile" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile"
;;
dashXmstdout)
# This case only exists to satisfy depend.m4. It is never actually
# run, as this mode is specially recognized in the preamble.
exit 1
;;
makedepend)
"$@" || exit $?
# Remove any Libtool call
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# X makedepend
shift
cleared=no eat=no
for arg
do
case $cleared in
no)
set ""; shift
cleared=yes ;;
esac
if test $eat = yes; then
eat=no
continue
fi
case "$arg" in
-D*|-I*)
set fnord "$@" "$arg"; shift ;;
# Strip any option that makedepend may not understand. Remove
# the object too, otherwise makedepend will parse it as a source file.
-arch)
eat=yes ;;
-*|$object)
;;
*)
set fnord "$@" "$arg"; shift ;;
esac
done
obj_suffix=`echo "$object" | sed 's/^.*\././'`
touch "$tmpdepfile"
${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
rm -f "$depfile"
# makedepend may prepend the VPATH from the source file name to the object.
# No need to regex-escape $object, excess matching of '.' is harmless.
sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
# Some versions of the HPUX 10.20 sed can't process the last invocation
# correctly. Breaking it into two sed invocations is a workaround.
sed '1,2d' "$tmpdepfile" \
| tr ' ' "$nl" \
| sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
| sed -e 's/$/ :/' >> "$depfile"
rm -f "$tmpdepfile" "$tmpdepfile".bak
;;
cpp)
# Important note: in order to support this mode, a compiler *must*
# always write the preprocessed file to stdout.
"$@" || exit $?
# Remove the call to Libtool.
if test "$libtool" = yes; then
while test "X$1" != 'X--mode=compile'; do
shift
done
shift
fi
# Remove '-o $object'.
IFS=" "
for arg
do
case $arg in
-o)
shift
;;
$object)
shift
;;
*)
set fnord "$@" "$arg"
shift # fnord
shift # $arg
;;
esac
done
"$@" -E \
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&& gtags -i $(GTAGS_ARGS) "$$here"
cscopelist: cscopelist-am
cscopelist-am: $(am__tagged_files)
list='$(am__tagged_files)'; \
case "$(srcdir)" in \
[\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
*) sdir=$(subdir)/$(srcdir) ;; \
esac; \
for i in $$list; do \
if test -f "$$i"; then \
echo "$(subdir)/$$i"; \
else \
echo "$$sdir/$$i"; \
fi; \
done >> $(top_builddir)/cscope.files
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-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
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$(MAKE) $(AM_MAKEFLAGS) distdir-am
distdir-am: $(DISTFILES)
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list='$(DISTFILES)'; \
dist_files=`for file in $$list; do echo $$file; done | \
sed -e "s|^$$srcdirstrip/||;t" \
-e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
case $$dist_files in \
*/*) $(MKDIR_P) `echo "$$dist_files" | \
sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
sort -u` ;; \
esac; \
for file in $$dist_files; do \
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
if test -d $$d/$$file; then \
dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
if test -d "$(distdir)/$$file"; then \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
fi; \
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
fi; \
cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
else \
test -f "$(distdir)/$$file" \
|| cp -p $$d/$$file "$(distdir)/$$file" \
|| exit 1; \
fi; \
done
check-am: all-am
check: check-am
all-am: Makefile $(PROGRAMS)
installdirs:
install: install-am
install-exec: install-exec-am
install-data: install-data-am
uninstall: uninstall-am
install-am: all-am
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
installcheck: installcheck-am
install-strip:
if test -z '$(STRIP)'; then \
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
install; \
else \
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
"INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
fi
mostlyclean-generic:
clean-generic:
distclean-generic:
-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
maintainer-clean-generic:
@echo "This command is intended for maintainers to use"
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clean: clean-am
clean-am: clean-generic clean-libtool clean-noinstPROGRAMS \
mostlyclean-am
distclean: distclean-am
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# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

32
cmph-2.0.2/examples/file_adapter_ex2.c Normal file
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#include <cmph.h>
#include <stdio.h>
#include <string.h>
// Create minimal perfect hash function from in-disk keys using BDZ algorithm
int main(int argc, char **argv)
{
//Open file with newline separated list of keys
FILE * keys_fd = fopen("keys.txt", "r");
cmph_t *hash = NULL;
if (keys_fd == NULL)
{
fprintf(stderr, "File \"keys.txt\" not found\n");
exit(1);
}
// Source of keys
cmph_io_adapter_t *source = cmph_io_nlfile_adapter(keys_fd);
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BDZ);
hash = cmph_new(config);
cmph_config_destroy(config);
//Find key
const char *key = "jjjjjjjjjj";
unsigned int id = cmph_search(hash, key, (cmph_uint32)strlen(key));
fprintf(stderr, "Id:%u\n", id);
//Destroy hash
cmph_destroy(hash);
cmph_io_nlfile_adapter_destroy(source);
fclose(keys_fd);
return 0;
}

105
cmph-2.0.2/examples/small_set_ex4.c Normal file
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#include <cmph.h>
int test(cmph_uint32* items_to_hash, cmph_uint32 items_len, CMPH_ALGO alg_n)
{
cmph_t *hash;
cmph_config_t *config;
cmph_io_adapter_t *source;
cmph_uint32 i;
char filename[256];
FILE* mphf_fd = NULL;
printf("%s (%u)\n", cmph_names[alg_n], alg_n);
source = cmph_io_struct_vector_adapter(items_to_hash,
(cmph_uint32)sizeof(cmph_uint32),
0,
(cmph_uint32)sizeof(cmph_uint32),
items_len);
config = cmph_config_new(source);
cmph_config_set_algo(config, alg_n);
if (alg_n == CMPH_BRZ) {
sprintf(filename, "%s_%u.mph", cmph_names[alg_n], items_len);
mphf_fd = fopen(filename, "w");
cmph_config_set_mphf_fd(config, mphf_fd);
}
hash = cmph_new(config);
cmph_config_destroy(config);
if (alg_n == CMPH_BRZ) {
cmph_dump(hash, mphf_fd);
cmph_destroy(hash);
fclose(mphf_fd);
mphf_fd = fopen(filename, "r");
hash = cmph_load(mphf_fd);
}
printf("packed_size %u\n",cmph_packed_size(hash));
for (i=0; i<items_len; ++i)
printf("%d -> %u\n",
items_to_hash[i],
cmph_search(hash,
(char*)(items_to_hash+i),
(cmph_uint32)sizeof(cmph_uint32)));
printf("\n");
cmph_io_vector_adapter_destroy(source);
cmph_destroy(hash);
if (alg_n == CMPH_BRZ) {
fclose(mphf_fd);
}
return 0;
}
int main (void)
{
cmph_uint32 vec1[] = {1,2,3,4,5};
cmph_uint32 vec1_len = 5;
cmph_uint32 vec2[] = {7576423, 7554496}; //CMPH_FCH, CMPH_BDZ, CMPH_BDZ_PH (4,5,6)
cmph_uint32 vec2_len = 2;
cmph_uint32 vec3[] = {2184764, 1882984, 1170551}; // CMPH_CHD_PH, CMPH_CHD (7,8)
cmph_uint32 vec3_len = 3;
cmph_uint32 vec4[] = {2184764}; // CMPH_CHD_PH, CMPH_CHD (7,8)
cmph_uint32 vec4_len = 1;
cmph_uint32 i;
// Testing with vec1
cmph_uint32* values = (cmph_uint32*)vec1;
cmph_uint32 length = vec1_len;
printf("TESTING VECTOR WITH %u INTEGERS\n", length);
for (i = 0; i < CMPH_COUNT; i++)
{
test(values, length, i);
}
// Testing with vec2
values = (cmph_uint32*)vec2;
length = vec2_len;
printf("TESTING VECTOR WITH %u INTEGERS\n", length);
for (i = 0; i < CMPH_COUNT; i++)
{
test(values, length, i);
}
// Testing with vec3
values = (cmph_uint32*)vec3;
length = vec3_len;
printf("TESTING VECTOR WITH %u INTEGERS\n", length);
for (i = 0; i < CMPH_COUNT; i++)
{
test(values, length, i);
}
// Testing with vec4
values = (cmph_uint32*)vec4;
length = vec4_len;
printf("TESTING VECTOR WITH %u INTEGERS\n", length);
for (i = 0; i < CMPH_COUNT; i++)
{
test(values, length, i);
}
return 0;
}

51
cmph-2.0.2/examples/struct_vector_adapter_ex3.c Normal file
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#include <cmph.h>
#include <string.h>
// Create minimal perfect hash function from in-memory vector
#pragma pack(1)
typedef struct {
cmph_uint32 id;
char key[11];
cmph_uint32 year;
} rec_t;
#pragma pack(0)
int main(int argc, char **argv)
{
// Creating a filled vector
unsigned int i = 0;
rec_t vector[10] = {{1, "aaaaaaaaaa", 1999}, {2, "bbbbbbbbbb", 2000}, {3, "cccccccccc", 2001},
{4, "dddddddddd", 2002}, {5, "eeeeeeeeee", 2003}, {6, "ffffffffff", 2004},
{7, "gggggggggg", 2005}, {8, "hhhhhhhhhh", 2006}, {9, "iiiiiiiiii", 2007},
{10,"jjjjjjjjjj", 2008}};
unsigned int nkeys = 10;
FILE* mphf_fd = fopen("temp_struct_vector.mph", "wb");
// Source of keys
cmph_io_adapter_t *source = cmph_io_struct_vector_adapter(vector, (cmph_uint32)sizeof(rec_t), (cmph_uint32)sizeof(cmph_uint32), 11, nkeys);
//Create minimal perfect hash function using the BDZ algorithm.
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BDZ);
cmph_config_set_mphf_fd(config, mphf_fd);
cmph_t *hash = cmph_new(config);
cmph_config_destroy(config);
cmph_dump(hash, mphf_fd);
cmph_destroy(hash);
fclose(mphf_fd);
//Find key
mphf_fd = fopen("temp_struct_vector.mph", "rb");
hash = cmph_load(mphf_fd);
while (i < nkeys) {
const char *key = vector[i].key;
unsigned int id = cmph_search(hash, key, 11);
fprintf(stderr, "key:%s -- hash:%u\n", key, id);
i++;
}
//Destroy hash
cmph_destroy(hash);
cmph_io_vector_adapter_destroy(source);
fclose(mphf_fd);
return 0;
}

41
cmph-2.0.2/examples/vector_adapter_ex1.c Executable file
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#include <cmph.h>
#include <string.h>
// Create minimal perfect hash function from in-memory vector
int main(int argc, char **argv)
{
// Creating a filled vector
unsigned int i = 0;
const char *vector[] = {"aaaaaaaaaa", "bbbbbbbbbb", "cccccccccc", "dddddddddd", "eeeeeeeeee",
"ffffffffff", "gggggggggg", "hhhhhhhhhh", "iiiiiiiiii", "jjjjjjjjjj"};
unsigned int nkeys = 10;
FILE* mphf_fd = fopen("temp.mph", "wb");
// Source of keys
cmph_io_adapter_t *source = cmph_io_vector_adapter((char **)vector, nkeys);
//Create minimal perfect hash function using the brz algorithm.
cmph_config_t *config = cmph_config_new(source);
cmph_config_set_algo(config, CMPH_BRZ);
cmph_config_set_mphf_fd(config, mphf_fd);
cmph_t *hash = cmph_new(config);
cmph_config_destroy(config);
cmph_dump(hash, mphf_fd);
cmph_destroy(hash);
fclose(mphf_fd);
//Find key
mphf_fd = fopen("temp.mph", "rb");
hash = cmph_load(mphf_fd);
while (i < nkeys) {
const char *key = vector[i];
unsigned int id = cmph_search(hash, key, (cmph_uint32)strlen(key));
fprintf(stderr, "key:%s -- hash:%u\n", key, id);
i++;
}
//Destroy hash
cmph_destroy(hash);
cmph_io_vector_adapter_destroy(source);
fclose(mphf_fd);
return 0;
}

518
cmph-2.0.2/install-sh Executable file
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#!/bin/sh
# install - install a program, script, or datafile
scriptversion=2018-03-11.20; # UTC
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.
tab=' '
nl='
'
IFS=" $tab$nl"
# Set DOITPROG to "echo" to test this script.
doit=${DOITPROG-}
doit_exec=${doit:-exec}
# Put in absolute file names if you don't have them in your path;
# or use environment vars.
chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}
posix_mkdir=
# Desired mode of installed file.
mode=0755
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=
src=
dst=
dir_arg=
dst_arg=
copy_on_change=false
is_target_a_directory=possibly
usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
or: $0 [OPTION]... SRCFILES... DIRECTORY
or: $0 [OPTION]... -t DIRECTORY SRCFILES...
or: $0 [OPTION]... -d DIRECTORIES...
In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.
Options:
--help display this help and exit.
--version display version info and exit.
-c (ignored)
-C install only if different (preserve the last data modification time)
-d create directories instead of installing files.
-g GROUP $chgrpprog installed files to GROUP.
-m MODE $chmodprog installed files to MODE.
-o USER $chownprog installed files to USER.
-s $stripprog installed files.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
Environment variables override the default commands:
CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
RMPROG STRIPPROG
"
while test $# -ne 0; do
case $1 in
-c) ;;
-C) copy_on_change=true;;
-d) dir_arg=true;;
-g) chgrpcmd="$chgrpprog $2"
shift;;
--help) echo "$usage"; exit $?;;
-m) mode=$2
case $mode in
*' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
echo "$0: invalid mode: $mode" >&2
exit 1;;
esac
shift;;
-o) chowncmd="$chownprog $2"
shift;;
-s) stripcmd=$stripprog;;
-t)
is_target_a_directory=always
dst_arg=$2
# Protect names problematic for 'test' and other utilities.
case $dst_arg in
-* | [=\(\)!]) dst_arg=./$dst_arg;;
esac
shift;;
-T) is_target_a_directory=never;;
--version) echo "$0 $scriptversion"; exit $?;;
--) shift
break;;
-*) echo "$0: invalid option: $1" >&2
exit 1;;
*) break;;
esac
shift
done
# We allow the use of options -d and -T together, by making -d
# take the precedence; this is for compatibility with GNU install.
if test -n "$dir_arg"; then
if test -n "$dst_arg"; then
echo "$0: target directory not allowed when installing a directory." >&2
exit 1
fi
fi
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
# When -d is used, all remaining arguments are directories to create.
# When -t is used, the destination is already specified.
# Otherwise, the last argument is the destination. Remove it from $@.
for arg
do
if test -n "$dst_arg"; then
# $@ is not empty: it contains at least $arg.
set fnord "$@" "$dst_arg"
shift # fnord
fi
shift # arg
dst_arg=$arg
# Protect names problematic for 'test' and other utilities.
case $dst_arg in
-* | [=\(\)!]) dst_arg=./$dst_arg;;
esac
done
fi
if test $# -eq 0; then
if test -z "$dir_arg"; then
echo "$0: no input file specified." >&2
exit 1
fi
# It's OK to call 'install-sh -d' without argument.
# This can happen when creating conditional directories.
exit 0
fi
if test -z "$dir_arg"; then
if test $# -gt 1 || test "$is_target_a_directory" = always; then
if test ! -d "$dst_arg"; then
echo "$0: $dst_arg: Is not a directory." >&2
exit 1
fi
fi
fi
if test -z "$dir_arg"; then
do_exit='(exit $ret); exit $ret'
trap "ret=129; $do_exit" 1
trap "ret=130; $do_exit" 2
trap "ret=141; $do_exit" 13
trap "ret=143; $do_exit" 15
# Set umask so as not to create temps with too-generous modes.
# However, 'strip' requires both read and write access to temps.
case $mode in
# Optimize common cases.
*644) cp_umask=133;;
*755) cp_umask=22;;
*[0-7])
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw='% 200'
fi
cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
*)
if test -z "$stripcmd"; then
u_plus_rw=
else
u_plus_rw=,u+rw
fi
cp_umask=$mode$u_plus_rw;;
esac
fi
for src
do
# Protect names problematic for 'test' and other utilities.
case $src in
-* | [=\(\)!]) src=./$src;;
esac
if test -n "$dir_arg"; then
dst=$src
dstdir=$dst
test -d "$dstdir"
dstdir_status=$?
else
# Waiting for this to be detected by the "$cpprog $src $dsttmp" command
# might cause directories to be created, which would be especially bad
# if $src (and thus $dsttmp) contains '*'.
if test ! -f "$src" && test ! -d "$src"; then
echo "$0: $src does not exist." >&2
exit 1
fi
if test -z "$dst_arg"; then
echo "$0: no destination specified." >&2
exit 1
fi
dst=$dst_arg
# If destination is a directory, append the input filename.
if test -d "$dst"; then
if test "$is_target_a_directory" = never; then
echo "$0: $dst_arg: Is a directory" >&2
exit 1
fi
dstdir=$dst
dstbase=`basename "$src"`
case $dst in
*/) dst=$dst$dstbase;;
*) dst=$dst/$dstbase;;
esac
dstdir_status=0
else
dstdir=`dirname "$dst"`
test -d "$dstdir"
dstdir_status=$?
fi
fi
case $dstdir in
*/) dstdirslash=$dstdir;;
*) dstdirslash=$dstdir/;;
esac
obsolete_mkdir_used=false
if test $dstdir_status != 0; then
case $posix_mkdir in
'')
# Create intermediate dirs using mode 755 as modified by the umask.
# This is like FreeBSD 'install' as of 1997-10-28.
umask=`umask`
case $stripcmd.$umask in
# Optimize common cases.
*[2367][2367]) mkdir_umask=$umask;;
.*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
*[0-7])
mkdir_umask=`expr $umask + 22 \
- $umask % 100 % 40 + $umask % 20 \
- $umask % 10 % 4 + $umask % 2
`;;
*) mkdir_umask=$umask,go-w;;
esac
# With -d, create the new directory with the user-specified mode.
# Otherwise, rely on $mkdir_umask.
if test -n "$dir_arg"; then
mkdir_mode=-m$mode
else
mkdir_mode=
fi
posix_mkdir=false
case $umask in
*[123567][0-7][0-7])
# POSIX mkdir -p sets u+wx bits regardless of umask, which
# is incompatible with FreeBSD 'install' when (umask & 300) != 0.
;;
*)
# Note that $RANDOM variable is not portable (e.g. dash); Use it
# here however when possible just to lower collision chance.
tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
trap 'ret=$?; rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null; exit $ret' 0
# Because "mkdir -p" follows existing symlinks and we likely work
# directly in world-writeable /tmp, make sure that the '$tmpdir'
# directory is successfully created first before we actually test
# 'mkdir -p' feature.
if (umask $mkdir_umask &&
$mkdirprog $mkdir_mode "$tmpdir" &&
exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
then
if test -z "$dir_arg" || {
# Check for POSIX incompatibilities with -m.
# HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
# other-writable bit of parent directory when it shouldn't.
# FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
test_tmpdir="$tmpdir/a"
ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
case $ls_ld_tmpdir in
d????-?r-*) different_mode=700;;
d????-?--*) different_mode=755;;
*) false;;
esac &&
$mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
}
}
then posix_mkdir=:
fi
rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
else
# Remove any dirs left behind by ancient mkdir implementations.
rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
fi
trap '' 0;;
esac;;
esac
if
$posix_mkdir && (
umask $mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
)
then :
else
# The umask is ridiculous, or mkdir does not conform to POSIX,
# or it failed possibly due to a race condition. Create the
# directory the slow way, step by step, checking for races as we go.
case $dstdir in
/*) prefix='/';;
[-=\(\)!]*) prefix='./';;
*) prefix='';;
esac
oIFS=$IFS
IFS=/
set -f
set fnord $dstdir
shift
set +f
IFS=$oIFS
prefixes=
for d
do
test X"$d" = X && continue
prefix=$prefix$d
if test -d "$prefix"; then
prefixes=
else
if $posix_mkdir; then
(umask=$mkdir_umask &&
$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
# Don't fail if two instances are running concurrently.
test -d "$prefix" || exit 1
else
case $prefix in
*\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
*) qprefix=$prefix;;
esac
prefixes="$prefixes '$qprefix'"
fi
fi
prefix=$prefix/
done
if test -n "$prefixes"; then
# Don't fail if two instances are running concurrently.
(umask $mkdir_umask &&
eval "\$doit_exec \$mkdirprog $prefixes") ||
test -d "$dstdir" || exit 1
obsolete_mkdir_used=true
fi
fi
fi
if test -n "$dir_arg"; then
{ test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
{ test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
else
# Make a couple of temp file names in the proper directory.
dsttmp=${dstdirslash}_inst.$$_
rmtmp=${dstdirslash}_rm.$$_
# Trap to clean up those temp files at exit.
trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
# Copy the file name to the temp name.
(umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
# and set any options; do chmod last to preserve setuid bits.
#
# If any of these fail, we abort the whole thing. If we want to
# ignore errors from any of these, just make sure not to ignore
# errors from the above "$doit $cpprog $src $dsttmp" command.
#
{ test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
{ test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
{ test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
{ test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
# If -C, don't bother to copy if it wouldn't change the file.
if $copy_on_change &&
old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
set -f &&
set X $old && old=:$2:$4:$5:$6 &&
set X $new && new=:$2:$4:$5:$6 &&
set +f &&
test "$old" = "$new" &&
$cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
then
rm -f "$dsttmp"
else
# Rename the file to the real destination.
$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
# The rename failed, perhaps because mv can't rename something else
# to itself, or perhaps because mv is so ancient that it does not
# support -f.
{
# Now remove or move aside any old file at destination location.
# We try this two ways since rm can't unlink itself on some
# systems and the destination file might be busy for other
# reasons. In this case, the final cleanup might fail but the new
# file should still install successfully.
{
test ! -f "$dst" ||
$doit $rmcmd -f "$dst" 2>/dev/null ||
{ $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
{ $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
} ||
{ echo "$0: cannot unlink or rename $dst" >&2
(exit 1); exit 1
}
} &&
# Now rename the file to the real destination.
$doit $mvcmd "$dsttmp" "$dst"
}
fi || exit 1
trap '' 0
fi
done
# Local variables:
# eval: (add-hook 'before-save-hook 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC0"
# time-stamp-end: "; # UTC"
# End:

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AC_DEFUN([AC_ENABLE_CXXMPH], [AC_ARG_ENABLE([cxxmph],
[ --enable-cxxmph enable the c++ cxxmph library ],
[case "${enableval}" in
yes) cxxmph=true ;;
no) cxxmph=false ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-cxxmph]) ;;
esac],[cxxmph=false])])
AC_DEFUN([AC_ENABLE_BENCHMARKS], [AC_ARG_ENABLE([benchmarks],
[ --enable-benchmarks enable cxxmph benchmarks against other libs ],
[case "${enableval}" in
yes) benchmarks=true ;;
no) benchmarks=false ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-benchmarks]) ;;
esac],[benchmarks=false])])

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dnl Check for baseline language coverage in the compiler for the C++0x standard.
# AC_COMPILE_STDCXX_OX
AC_DEFUN([AC_COMPILE_STDCXX_0X], [
AC_CACHE_CHECK(if compiler supports C++0x features without additional flags,
ac_cv_cxx_compile_cxx0x_native,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([
#include <unordered_map>
#include <unordered_set>
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
typedef check<check<bool>> right_angle_brackets;
int a;
decltype(a) b;
],,
ac_cv_cxx_compile_cxx0x_native=yes, ac_cv_cxx_compile_cxx0x_native=no)
AC_LANG_RESTORE
])
AC_CACHE_CHECK(if compiler supports C++0x features with -std=c++11,
ac_cv_cxx_compile_cxx11_cxx,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=c++11"
AC_TRY_COMPILE([
#include <unordered_map>
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
typedef check<check<bool>> right_angle_brackets;
int a;
decltype(a) b;],,
ac_cv_cxx_compile_cxx11_cxx=yes, ac_cv_cxx_compile_cxx11_cxx=no)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
AC_CACHE_CHECK(if compiler supports C++0x features with -std=c++0x,
ac_cv_cxx_compile_cxx0x_cxx,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=c++0x"
AC_TRY_COMPILE([
#include <unordered_map>
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
typedef check<check<bool>> right_angle_brackets;
int a;
decltype(a) b;],,
ac_cv_cxx_compile_cxx0x_cxx=yes, ac_cv_cxx_compile_cxx0x_cxx=no)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
AC_CACHE_CHECK(if compiler supports C++0x features with -std=gnu++0x,
ac_cv_cxx_compile_cxx0x_gxx,
[AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -std=gnu++0x"
AC_TRY_COMPILE([
#include <unordered_map>
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
typedef check<check<bool>> right_angle_brackets;
int a;
decltype(a) b;],,
ac_cv_cxx_compile_cxx0x_gxx=yes, ac_cv_cxx_compile_cxx0x_gxx=no)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
if test "$ac_cv_cxx_compile_cxx0x_native" = yes ||
test "$ac_cv_cxx_compile_cxx0x_cxx" = yes ||
test "$ac_cv_cxx_compile_cxx0x_gxx" = yes; then
AC_DEFINE(HAVE_STDCXX_0X,,[Define if g++ supports C++0x features. ])
fi
])

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dnl By default, many hosts won't let programs access large files;
dnl one must use special compiler options to get large-file access to work.
dnl For more details about this brain damage please see:
dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
dnl Written by Paul Eggert <eggert@twinsun.com>.
dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
dnl AC_SYS_EXTRA_LARGEFILE_FLAGS(FLAGSNAME)
AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_FLAGS],
[AC_CACHE_CHECK([for $1 value to request large file support],
ac_cv_sys_largefile_$1,
[ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || {
ac_cv_sys_largefile_$1=no
ifelse($1, CFLAGS,
[case "$host_os" in
# IRIX 6.2 and later require cc -n32.
changequote(, )dnl
irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)
changequote([, ])dnl
if test "$GCC" != yes; then
ac_cv_sys_largefile_CFLAGS=-n32
fi
ac_save_CC="$CC"
CC="$CC $ac_cv_sys_largefile_CFLAGS"
AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no)
CC="$ac_save_CC"
esac])
}])])
dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
dnl AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(VAR, VAL)
AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND],
[case $2 in
no) ;;
?*)
case "[$]$1" in
'') $1=$2 ;;
*) $1=[$]$1' '$2 ;;
esac ;;
esac])
dnl Internal subroutine of AC_SYS_EXTRA_LARGEFILE.
dnl AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAULT)
AC_DEFUN([AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE],
[AC_CACHE_CHECK([for $1], $2,
[$2=no
changequote(, )dnl
$4
for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
case "$ac_flag" in
-D$1)
$2=1 ;;
-D$1=*)
$2=`expr " $ac_flag" : '[^=]*=\(.*\)'` ;;
esac
done
changequote([, ])dnl
])
if test "[$]$2" != no; then
AC_DEFINE_UNQUOTED([$1], [$]$2, [$3])
fi])
AC_DEFUN([AC_SYS_EXTRA_LARGEFILE],
[AC_REQUIRE([AC_CANONICAL_HOST])
AC_ARG_ENABLE(largefile,
[ --disable-largefile omit support for large files])
if test "$enable_largefile" != no; then
AC_CHECK_TOOL(GETCONF, getconf)
AC_SYS_EXTRA_LARGEFILE_FLAGS(CFLAGS)
AC_SYS_EXTRA_LARGEFILE_FLAGS(LDFLAGS)
AC_SYS_EXTRA_LARGEFILE_FLAGS(LIBS)
for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
case "$ac_flag" in
no) ;;
-D_FILE_OFFSET_BITS=*) ;;
-D_LARGEFILE_SOURCE | -D_LARGEFILE_SOURCE=*) ;;
-D_LARGE_FILES | -D_LARGE_FILES=*) ;;
-D?* | -I?*)
AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(CPPFLAGS, "$ac_flag") ;;
*)
AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(CFLAGS, "$ac_flag") ;;
esac
done
AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(LDFLAGS, "$ac_cv_sys_largefile_LDFLAGS")
AC_SYS_EXTRA_LARGEFILE_SPACE_APPEND(LIBS, "$ac_cv_sys_largefile_LIBS")
AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS,
ac_cv_sys_file_offset_bits,
[Number of bits in a file offset, on hosts where this is settable.])
[case "$host_os" in
# HP-UX 10.20 and later
hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
ac_cv_sys_file_offset_bits=64 ;;
esac]
AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE,
ac_cv_sys_largefile_source,
[Define to make fseeko etc. visible, on some hosts.],
[case "$host_os" in
# HP-UX 10.20 and later
hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
ac_cv_sys_largefile_source=1 ;;
esac])
AC_SYS_EXTRA_LARGEFILE_MACRO_VALUE(_LARGE_FILES,
ac_cv_sys_large_files,
[Define for large files, on AIX-style hosts.],
[case "$host_os" in
# AIX 4.2 and later
aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)
ac_cv_sys_large_files=1 ;;
esac])
fi
])

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# Helper functions for option handling. -*- Autoconf -*-
#
# Copyright (C) 2004-2005, 2007-2009, 2011-2015 Free Software
# Foundation, Inc.
# Written by Gary V. Vaughan, 2004
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
# serial 8 ltoptions.m4
# This is to help aclocal find these macros, as it can't see m4_define.
AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
# ------------------------------------------
m4_define([_LT_MANGLE_OPTION],
[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
# ---------------------------------------
# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
# matching handler defined, dispatch to it. Other OPTION-NAMEs are
# saved as a flag.
m4_define([_LT_SET_OPTION],
[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
_LT_MANGLE_DEFUN([$1], [$2]),
[m4_warning([Unknown $1 option '$2'])])[]dnl
])
# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
# ------------------------------------------------------------
# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
m4_define([_LT_IF_OPTION],
[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
# -------------------------------------------------------
# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
# are set.
m4_define([_LT_UNLESS_OPTIONS],
[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
[m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
[m4_define([$0_found])])])[]dnl
m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
])[]dnl
])
# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
# ----------------------------------------
# OPTION-LIST is a space-separated list of Libtool options associated
# with MACRO-NAME. If any OPTION has a matching handler declared with
# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
# the unknown option and exit.
m4_defun([_LT_SET_OPTIONS],
[# Set options
m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
[_LT_SET_OPTION([$1], _LT_Option)])
m4_if([$1],[LT_INIT],[
dnl
dnl Simply set some default values (i.e off) if boolean options were not
dnl specified:
_LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
])
_LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
])
dnl
dnl If no reference was made to various pairs of opposing options, then
dnl we run the default mode handler for the pair. For example, if neither
dnl 'shared' nor 'disable-shared' was passed, we enable building of shared
dnl archives by default:
_LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
_LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
_LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
_LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
[_LT_ENABLE_FAST_INSTALL])
_LT_UNLESS_OPTIONS([LT_INIT], [aix-soname=aix aix-soname=both aix-soname=svr4],
[_LT_WITH_AIX_SONAME([aix])])
])
])# _LT_SET_OPTIONS
## --------------------------------- ##
## Macros to handle LT_INIT options. ##
## --------------------------------- ##
# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
# -----------------------------------------
m4_define([_LT_MANGLE_DEFUN],
[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
# -----------------------------------------------
m4_define([LT_OPTION_DEFINE],
[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
])# LT_OPTION_DEFINE
# dlopen
# ------
LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
])
AU_DEFUN([AC_LIBTOOL_DLOPEN],
[_LT_SET_OPTION([LT_INIT], [dlopen])
AC_DIAGNOSE([obsolete],
[$0: Remove this warning and the call to _LT_SET_OPTION when you
put the 'dlopen' option into LT_INIT's first parameter.])
])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
# win32-dll
# ---------
# Declare package support for building win32 dll's.
LT_OPTION_DEFINE([LT_INIT], [win32-dll],
[enable_win32_dll=yes
case $host in
*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
AC_CHECK_TOOL(AS, as, false)
AC_CHECK_TOOL(DLLTOOL, dlltool, false)
AC_CHECK_TOOL(OBJDUMP, objdump, false)
;;
esac
test -z "$AS" && AS=as
_LT_DECL([], [AS], [1], [Assembler program])dnl
test -z "$DLLTOOL" && DLLTOOL=dlltool
_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl
test -z "$OBJDUMP" && OBJDUMP=objdump
_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl
])# win32-dll
AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
_LT_SET_OPTION([LT_INIT], [win32-dll])
AC_DIAGNOSE([obsolete],
[$0: Remove this warning and the call to _LT_SET_OPTION when you
put the 'win32-dll' option into LT_INIT's first parameter.])
])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
# _LT_ENABLE_SHARED([DEFAULT])
# ----------------------------
# implement the --enable-shared flag, and supports the 'shared' and
# 'disable-shared' LT_INIT options.
# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'.
m4_define([_LT_ENABLE_SHARED],
[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
AC_ARG_ENABLE([shared],
[AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
[build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
[p=${PACKAGE-default}
case $enableval in
yes) enable_shared=yes ;;
no) enable_shared=no ;;
*)
enable_shared=no
# Look at the argument we got. We use all the common list separators.
lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR,
for pkg in $enableval; do
IFS=$lt_save_ifs
if test "X$pkg" = "X$p"; then
enable_shared=yes
fi
done
IFS=$lt_save_ifs
;;
esac],
[enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
_LT_DECL([build_libtool_libs], [enable_shared], [0],
[Whether or not to build shared libraries])
])# _LT_ENABLE_SHARED
LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
# Old names:
AC_DEFUN([AC_ENABLE_SHARED],
[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
])
AC_DEFUN([AC_DISABLE_SHARED],
[_LT_SET_OPTION([LT_INIT], [disable-shared])
])
AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AM_ENABLE_SHARED], [])
dnl AC_DEFUN([AM_DISABLE_SHARED], [])
# _LT_ENABLE_STATIC([DEFAULT])
# ----------------------------
# implement the --enable-static flag, and support the 'static' and
# 'disable-static' LT_INIT options.
# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'.
m4_define([_LT_ENABLE_STATIC],
[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
AC_ARG_ENABLE([static],
[AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
[build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
[p=${PACKAGE-default}
case $enableval in
yes) enable_static=yes ;;
no) enable_static=no ;;
*)
enable_static=no
# Look at the argument we got. We use all the common list separators.
lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR,
for pkg in $enableval; do
IFS=$lt_save_ifs
if test "X$pkg" = "X$p"; then
enable_static=yes
fi
done
IFS=$lt_save_ifs
;;
esac],
[enable_static=]_LT_ENABLE_STATIC_DEFAULT)
_LT_DECL([build_old_libs], [enable_static], [0],
[Whether or not to build static libraries])
])# _LT_ENABLE_STATIC
LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
# Old names:
AC_DEFUN([AC_ENABLE_STATIC],
[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
])
AC_DEFUN([AC_DISABLE_STATIC],
[_LT_SET_OPTION([LT_INIT], [disable-static])
])
AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AM_ENABLE_STATIC], [])
dnl AC_DEFUN([AM_DISABLE_STATIC], [])
# _LT_ENABLE_FAST_INSTALL([DEFAULT])
# ----------------------------------
# implement the --enable-fast-install flag, and support the 'fast-install'
# and 'disable-fast-install' LT_INIT options.
# DEFAULT is either 'yes' or 'no'. If omitted, it defaults to 'yes'.
m4_define([_LT_ENABLE_FAST_INSTALL],
[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
AC_ARG_ENABLE([fast-install],
[AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
[optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
[p=${PACKAGE-default}
case $enableval in
yes) enable_fast_install=yes ;;
no) enable_fast_install=no ;;
*)
enable_fast_install=no
# Look at the argument we got. We use all the common list separators.
lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR,
for pkg in $enableval; do
IFS=$lt_save_ifs
if test "X$pkg" = "X$p"; then
enable_fast_install=yes
fi
done
IFS=$lt_save_ifs
;;
esac],
[enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
_LT_DECL([fast_install], [enable_fast_install], [0],
[Whether or not to optimize for fast installation])dnl
])# _LT_ENABLE_FAST_INSTALL
LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
# Old names:
AU_DEFUN([AC_ENABLE_FAST_INSTALL],
[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
AC_DIAGNOSE([obsolete],
[$0: Remove this warning and the call to _LT_SET_OPTION when you put
the 'fast-install' option into LT_INIT's first parameter.])
])
AU_DEFUN([AC_DISABLE_FAST_INSTALL],
[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
AC_DIAGNOSE([obsolete],
[$0: Remove this warning and the call to _LT_SET_OPTION when you put
the 'disable-fast-install' option into LT_INIT's first parameter.])
])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
# _LT_WITH_AIX_SONAME([DEFAULT])
# ----------------------------------
# implement the --with-aix-soname flag, and support the `aix-soname=aix'
# and `aix-soname=both' and `aix-soname=svr4' LT_INIT options. DEFAULT
# is either `aix', `both' or `svr4'. If omitted, it defaults to `aix'.
m4_define([_LT_WITH_AIX_SONAME],
[m4_define([_LT_WITH_AIX_SONAME_DEFAULT], [m4_if($1, svr4, svr4, m4_if($1, both, both, aix))])dnl
shared_archive_member_spec=
case $host,$enable_shared in
power*-*-aix[[5-9]]*,yes)
AC_MSG_CHECKING([which variant of shared library versioning to provide])
AC_ARG_WITH([aix-soname],
[AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
[shared library versioning (aka "SONAME") variant to provide on AIX, @<:@default=]_LT_WITH_AIX_SONAME_DEFAULT[@:>@.])],
[case $withval in
aix|svr4|both)
;;
*)
AC_MSG_ERROR([Unknown argument to --with-aix-soname])
;;
esac
lt_cv_with_aix_soname=$with_aix_soname],
[AC_CACHE_VAL([lt_cv_with_aix_soname],
[lt_cv_with_aix_soname=]_LT_WITH_AIX_SONAME_DEFAULT)
with_aix_soname=$lt_cv_with_aix_soname])
AC_MSG_RESULT([$with_aix_soname])
if test aix != "$with_aix_soname"; then
# For the AIX way of multilib, we name the shared archive member
# based on the bitwidth used, traditionally 'shr.o' or 'shr_64.o',
# and 'shr.imp' or 'shr_64.imp', respectively, for the Import File.
# Even when GNU compilers ignore OBJECT_MODE but need '-maix64' flag,
# the AIX toolchain works better with OBJECT_MODE set (default 32).
if test 64 = "${OBJECT_MODE-32}"; then
shared_archive_member_spec=shr_64
else
shared_archive_member_spec=shr
fi
fi
;;
*)
with_aix_soname=aix
;;
esac
_LT_DECL([], [shared_archive_member_spec], [0],
[Shared archive member basename, for filename based shared library versioning on AIX])dnl
])# _LT_WITH_AIX_SONAME
LT_OPTION_DEFINE([LT_INIT], [aix-soname=aix], [_LT_WITH_AIX_SONAME([aix])])
LT_OPTION_DEFINE([LT_INIT], [aix-soname=both], [_LT_WITH_AIX_SONAME([both])])
LT_OPTION_DEFINE([LT_INIT], [aix-soname=svr4], [_LT_WITH_AIX_SONAME([svr4])])
# _LT_WITH_PIC([MODE])
# --------------------
# implement the --with-pic flag, and support the 'pic-only' and 'no-pic'
# LT_INIT options.
# MODE is either 'yes' or 'no'. If omitted, it defaults to 'both'.
m4_define([_LT_WITH_PIC],
[AC_ARG_WITH([pic],
[AS_HELP_STRING([--with-pic@<:@=PKGS@:>@],
[try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
[lt_p=${PACKAGE-default}
case $withval in
yes|no) pic_mode=$withval ;;
*)
pic_mode=default
# Look at the argument we got. We use all the common list separators.
lt_save_ifs=$IFS; IFS=$IFS$PATH_SEPARATOR,
for lt_pkg in $withval; do
IFS=$lt_save_ifs
if test "X$lt_pkg" = "X$lt_p"; then
pic_mode=yes
fi
done
IFS=$lt_save_ifs
;;
esac],
[pic_mode=m4_default([$1], [default])])
_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
])# _LT_WITH_PIC
LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
# Old name:
AU_DEFUN([AC_LIBTOOL_PICMODE],
[_LT_SET_OPTION([LT_INIT], [pic-only])
AC_DIAGNOSE([obsolete],
[$0: Remove this warning and the call to _LT_SET_OPTION when you
put the 'pic-only' option into LT_INIT's first parameter.])
])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
## ----------------- ##
## LTDL_INIT Options ##
## ----------------- ##
m4_define([_LTDL_MODE], [])
LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
[m4_define([_LTDL_MODE], [nonrecursive])])
LT_OPTION_DEFINE([LTDL_INIT], [recursive],
[m4_define([_LTDL_MODE], [recursive])])
LT_OPTION_DEFINE([LTDL_INIT], [subproject],
[m4_define([_LTDL_MODE], [subproject])])
m4_define([_LTDL_TYPE], [])
LT_OPTION_DEFINE([LTDL_INIT], [installable],
[m4_define([_LTDL_TYPE], [installable])])
LT_OPTION_DEFINE([LTDL_INIT], [convenience],
[m4_define([_LTDL_TYPE], [convenience])])

124
cmph-2.0.2/m4/ltsugar.m4 vendored Normal file
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@ -0,0 +1,124 @@
# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
#
# Copyright (C) 2004-2005, 2007-2008, 2011-2015 Free Software
# Foundation, Inc.
# Written by Gary V. Vaughan, 2004
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
# serial 6 ltsugar.m4
# This is to help aclocal find these macros, as it can't see m4_define.
AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
# lt_join(SEP, ARG1, [ARG2...])
# -----------------------------
# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
# associated separator.
# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
# versions in m4sugar had bugs.
m4_define([lt_join],
[m4_if([$#], [1], [],
[$#], [2], [[$2]],
[m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
m4_define([_lt_join],
[m4_if([$#$2], [2], [],
[m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
# lt_car(LIST)
# lt_cdr(LIST)
# ------------
# Manipulate m4 lists.
# These macros are necessary as long as will still need to support
# Autoconf-2.59, which quotes differently.
m4_define([lt_car], [[$1]])
m4_define([lt_cdr],
[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
[$#], 1, [],
[m4_dquote(m4_shift($@))])])
m4_define([lt_unquote], $1)
# lt_append(MACRO-NAME, STRING, [SEPARATOR])
# ------------------------------------------
# Redefine MACRO-NAME to hold its former content plus 'SEPARATOR''STRING'.
# Note that neither SEPARATOR nor STRING are expanded; they are appended
# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
# No SEPARATOR is output if MACRO-NAME was previously undefined (different
# than defined and empty).
#
# This macro is needed until we can rely on Autoconf 2.62, since earlier
# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
m4_define([lt_append],
[m4_define([$1],
m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
# ----------------------------------------------------------
# Produce a SEP delimited list of all paired combinations of elements of
# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
# has the form PREFIXmINFIXSUFFIXn.
# Needed until we can rely on m4_combine added in Autoconf 2.62.
m4_define([lt_combine],
[m4_if(m4_eval([$# > 3]), [1],
[m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
[[m4_foreach([_Lt_prefix], [$2],
[m4_foreach([_Lt_suffix],
]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
# -----------------------------------------------------------------------
# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
m4_define([lt_if_append_uniq],
[m4_ifdef([$1],
[m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
[lt_append([$1], [$2], [$3])$4],
[$5])],
[lt_append([$1], [$2], [$3])$4])])
# lt_dict_add(DICT, KEY, VALUE)
# -----------------------------
m4_define([lt_dict_add],
[m4_define([$1($2)], [$3])])
# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
# --------------------------------------------
m4_define([lt_dict_add_subkey],
[m4_define([$1($2:$3)], [$4])])
# lt_dict_fetch(DICT, KEY, [SUBKEY])
# ----------------------------------
m4_define([lt_dict_fetch],
[m4_ifval([$3],
m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
# -----------------------------------------------------------------
m4_define([lt_if_dict_fetch],
[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
[$5],
[$6])])
# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
# --------------------------------------------------------------
m4_define([lt_dict_filter],
[m4_if([$5], [], [],
[lt_join(m4_quote(m4_default([$4], [[, ]])),
lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
[lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
])

23
cmph-2.0.2/m4/ltversion.m4 vendored Normal file
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@ -0,0 +1,23 @@
# ltversion.m4 -- version numbers -*- Autoconf -*-
#
# Copyright (C) 2004, 2011-2015 Free Software Foundation, Inc.
# Written by Scott James Remnant, 2004
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
# @configure_input@
# serial 4179 ltversion.m4
# This file is part of GNU Libtool
m4_define([LT_PACKAGE_VERSION], [2.4.6])
m4_define([LT_PACKAGE_REVISION], [2.4.6])
AC_DEFUN([LTVERSION_VERSION],
[macro_version='2.4.6'
macro_revision='2.4.6'
_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
_LT_DECL(, macro_revision, 0)
])

99
cmph-2.0.2/m4/lt~obsolete.m4 vendored Normal file
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@ -0,0 +1,99 @@
# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*-
#
# Copyright (C) 2004-2005, 2007, 2009, 2011-2015 Free Software
# Foundation, Inc.
# Written by Scott James Remnant, 2004.
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
# serial 5 lt~obsolete.m4
# These exist entirely to fool aclocal when bootstrapping libtool.
#
# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN),
# which have later been changed to m4_define as they aren't part of the
# exported API, or moved to Autoconf or Automake where they belong.
#
# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN
# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
# using a macro with the same name in our local m4/libtool.m4 it'll
# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
# and doesn't know about Autoconf macros at all.)
#
# So we provide this file, which has a silly filename so it's always
# included after everything else. This provides aclocal with the
# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
# because those macros already exist, or will be overwritten later.
# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6.
#
# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
# Yes, that means every name once taken will need to remain here until
# we give up compatibility with versions before 1.7, at which point
# we need to keep only those names which we still refer to.
# This is to help aclocal find these macros, as it can't see m4_define.
AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])])
m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])])
m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
m4_ifndef([_LT_PROG_LTMAIN], [AC_DEFUN([_LT_PROG_LTMAIN])])
m4_ifndef([_LT_AC_TAGVAR], [AC_DEFUN([_LT_AC_TAGVAR])])
m4_ifndef([AC_LTDL_ENABLE_INSTALL], [AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
m4_ifndef([AC_LTDL_PREOPEN], [AC_DEFUN([AC_LTDL_PREOPEN])])
m4_ifndef([_LT_AC_SYS_COMPILER], [AC_DEFUN([_LT_AC_SYS_COMPILER])])
m4_ifndef([_LT_AC_LOCK], [AC_DEFUN([_LT_AC_LOCK])])
m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE], [AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
m4_ifndef([_LT_AC_TRY_DLOPEN_SELF], [AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
m4_ifndef([AC_LIBTOOL_PROG_CC_C_O], [AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
m4_ifndef([AC_LIBTOOL_OBJDIR], [AC_DEFUN([AC_LIBTOOL_OBJDIR])])
m4_ifndef([AC_LTDL_OBJDIR], [AC_DEFUN([AC_LTDL_OBJDIR])])
m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP], [AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
m4_ifndef([AC_PATH_MAGIC], [AC_DEFUN([AC_PATH_MAGIC])])
m4_ifndef([AC_PROG_LD_GNU], [AC_DEFUN([AC_PROG_LD_GNU])])
m4_ifndef([AC_PROG_LD_RELOAD_FLAG], [AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
m4_ifndef([AC_DEPLIBS_CHECK_METHOD], [AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS], [AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP], [AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
m4_ifndef([LT_AC_PROG_EGREP], [AC_DEFUN([LT_AC_PROG_EGREP])])
m4_ifndef([LT_AC_PROG_SED], [AC_DEFUN([LT_AC_PROG_SED])])
m4_ifndef([_LT_CC_BASENAME], [AC_DEFUN([_LT_CC_BASENAME])])
m4_ifndef([_LT_COMPILER_BOILERPLATE], [AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
m4_ifndef([_LT_LINKER_BOILERPLATE], [AC_DEFUN([_LT_LINKER_BOILERPLATE])])
m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])])
m4_ifndef([AC_LIBTOOL_SETUP], [AC_DEFUN([AC_LIBTOOL_SETUP])])
m4_ifndef([_LT_AC_CHECK_DLFCN], [AC_DEFUN([_LT_AC_CHECK_DLFCN])])
m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER], [AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
m4_ifndef([_LT_AC_TAGCONFIG], [AC_DEFUN([_LT_AC_TAGCONFIG])])
m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
m4_ifndef([_LT_AC_LANG_CXX], [AC_DEFUN([_LT_AC_LANG_CXX])])
m4_ifndef([_LT_AC_LANG_F77], [AC_DEFUN([_LT_AC_LANG_F77])])
m4_ifndef([_LT_AC_LANG_GCJ], [AC_DEFUN([_LT_AC_LANG_GCJ])])
m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
m4_ifndef([_LT_AC_LANG_C_CONFIG], [AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
m4_ifndef([_LT_AC_LANG_CXX_CONFIG], [AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
m4_ifndef([_LT_AC_LANG_F77_CONFIG], [AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
m4_ifndef([_LT_AC_LANG_GCJ_CONFIG], [AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG], [AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
m4_ifndef([_LT_AC_LANG_RC_CONFIG], [AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
m4_ifndef([AC_LIBTOOL_CONFIG], [AC_DEFUN([AC_LIBTOOL_CONFIG])])
m4_ifndef([_LT_AC_FILE_LTDLL_C], [AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
m4_ifndef([_LT_REQUIRED_DARWIN_CHECKS], [AC_DEFUN([_LT_REQUIRED_DARWIN_CHECKS])])
m4_ifndef([_LT_AC_PROG_CXXCPP], [AC_DEFUN([_LT_AC_PROG_CXXCPP])])
m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS], [AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
m4_ifndef([_LT_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_PROG_ECHO_BACKSLASH])])
m4_ifndef([_LT_PROG_F77], [AC_DEFUN([_LT_PROG_F77])])
m4_ifndef([_LT_PROG_FC], [AC_DEFUN([_LT_PROG_FC])])
m4_ifndef([_LT_PROG_CXX], [AC_DEFUN([_LT_PROG_CXX])])

5
cmph-2.0.2/m4/spoon.m4 Normal file
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@ -0,0 +1,5 @@
AC_DEFUN([AC_CHECK_SPOON], [
AC_ARG_WITH(spoon, [ --with-spoon=SPOON this is inocuous, since the truth is that there is no spoon ])
AC_MSG_CHECKING(if there is spoon)
AC_MSG_RESULT(no)
])

2
cmph-2.0.2/man/Makefile.am Normal file
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@ -0,0 +1,2 @@
man_MANS = cmph.1
EXTRA_DIST=cmph.1

531
cmph-2.0.2/man/Makefile.in Normal file
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@ -0,0 +1,531 @@
# Makefile.in generated by automake 1.16.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994-2018 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
@SET_MAKE@
VPATH = @srcdir@
am__is_gnu_make = { \
if test -z '$(MAKELEVEL)'; then \
false; \
elif test -n '$(MAKE_HOST)'; then \
true; \
elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
true; \
else \
false; \
fi; \
}
am__make_running_with_option = \
case $${target_option-} in \
?) ;; \
*) echo "am__make_running_with_option: internal error: invalid" \
"target option '$${target_option-}' specified" >&2; \
exit 1;; \
esac; \
has_opt=no; \
sane_makeflags=$$MAKEFLAGS; \
if $(am__is_gnu_make); then \
sane_makeflags=$$MFLAGS; \
else \
case $$MAKEFLAGS in \
*\\[\ \ ]*) \
bs=\\; \
sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
| sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
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fi; \
skip_next=no; \
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.TH CMPH "1" "October 2007" "cmph 0.6" "User Commands"
.SH NAME
cmph \- minimum perfect hashing tool
.SH SYNOPSIS
.B cmph
[\-v] [\-h] [\-V] [\-k nkeys] [\-f hash_function] [\-g [\-c value][\-s seed] ] [\-a algorithm] [\-M memory_in_MB] [\-b BRZ_parameter] [\-d tmp_dir] [\-m file.mph] keysfile
.SH DESCRIPTION
.PP
Command line tool to generate and query minimal perfect hash functions.
.PP
Please refer to http://cmph.sf.net for full documentation.
.TP
\fB\-h\fR
Print an help message
.TP
\fB\-c\fR
This value determines: the number of vertices in the graph for the algorithms BMZ and CHM; the number of bits per key required in the FCH algorithm
.TP
\fB\-a\fR
Algorithm. Valid values are: bmz, bmz8, chm, brz, fch
.TP
\fB\-f\fR
hash function (may be used multiple times). valid values are: djb2, fnv, jenkins, sdbm
.TP
\fB\-V\fR
Print version number and exit
.TP
\fB\-v\fR
Increase verbosity (may be used multiple times)
.TP
\fB\-k\fR
Number of keys
.TP
\fB\-g\fR
Generation mode
.TP
\fB\-s\fR
Random seed
.TP
\fB\-m\fR
Minimum perfect hash function file
.TP
\fB\-M\fR
Main memory availability (in MB)
.TP
\fB\-d\fR
Temporary directory used in brz algorithm
.TP
\fB\-b\fR
Parameter of BRZ algorithm to make the maximal number of keys in a bucket lower than 256
.TP
\fBkeysfile\fR
Line separated file with keys
.SH EXAMPLE
$ # Using the default algorithm (chm) for constructing a mphf
.br
$ # for keys in file keys_file. Lines in keys_file _must_ be unique.
.br
$ ./cmph \-v \-g keys_file
.br
$ # Query id of keys in the file keys_query
.br
$ ./cmph \-v \-m keys_file.mph keys_query
.SH AUTHOR
This manual page was written by Enrico Tassi <gareuselesinge@users.sourceforge.net>,
for the Debian project (but may be used by others).

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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

706
cmph-2.0.2/src/bdz.c Executable file
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@ -0,0 +1,706 @@
#include "bdz.h"
#include "cmph_structs.h"
#include "bdz_structs.h"
#include "hash.h"
#include "bitbool.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
// #define DEBUG
#include "debug.h"
#define UNASSIGNED 3U
#define NULL_EDGE 0xffffffff
//cmph_uint32 ngrafos = 0;
//cmph_uint32 ngrafos_aciclicos = 0;
// table used for looking up the number of assigned vertices a 8-bit integer
const cmph_uint8 bdz_lookup_table[] =
{
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 3, 3, 3, 3, 2,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 1,
2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 0
};
typedef struct
{
cmph_uint32 vertices[3];
cmph_uint32 next_edges[3];
}bdz_edge_t;
typedef cmph_uint32 * bdz_queue_t;
static void bdz_alloc_queue(bdz_queue_t * queuep, cmph_uint32 nedges)
{
(*queuep)=(cmph_uint32 *)malloc(nedges*sizeof(cmph_uint32));
};
static void bdz_free_queue(bdz_queue_t * queue)
{
free(*queue);
};
typedef struct
{
cmph_uint32 nedges;
bdz_edge_t * edges;
cmph_uint32 * first_edge;
cmph_uint8 * vert_degree;
}bdz_graph3_t;
static void bdz_alloc_graph3(bdz_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
graph3->edges=(bdz_edge_t *)malloc(nedges*sizeof(bdz_edge_t));
graph3->first_edge=(cmph_uint32 *)malloc(nvertices*sizeof(cmph_uint32));
graph3->vert_degree=(cmph_uint8 *)malloc((size_t)nvertices);
};
static void bdz_init_graph3(bdz_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
memset(graph3->first_edge,0xff,nvertices*sizeof(cmph_uint32));
memset(graph3->vert_degree,0,(size_t)nvertices);
graph3->nedges=0;
};
static void bdz_free_graph3(bdz_graph3_t *graph3)
{
free(graph3->edges);
free(graph3->first_edge);
free(graph3->vert_degree);
};
static void bdz_partial_free_graph3(bdz_graph3_t *graph3)
{
free(graph3->first_edge);
free(graph3->vert_degree);
graph3->first_edge = NULL;
graph3->vert_degree = NULL;
};
static void bdz_add_edge(bdz_graph3_t * graph3, cmph_uint32 v0, cmph_uint32 v1, cmph_uint32 v2)
{
graph3->edges[graph3->nedges].vertices[0]=v0;
graph3->edges[graph3->nedges].vertices[1]=v1;
graph3->edges[graph3->nedges].vertices[2]=v2;
graph3->edges[graph3->nedges].next_edges[0]=graph3->first_edge[v0];
graph3->edges[graph3->nedges].next_edges[1]=graph3->first_edge[v1];
graph3->edges[graph3->nedges].next_edges[2]=graph3->first_edge[v2];
graph3->first_edge[v0]=graph3->first_edge[v1]=graph3->first_edge[v2]=graph3->nedges;
graph3->vert_degree[v0]++;
graph3->vert_degree[v1]++;
graph3->vert_degree[v2]++;
graph3->nedges++;
};
static void bdz_dump_graph(bdz_graph3_t* graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
cmph_uint32 i;
for(i=0;i<nedges;i++){
printf("\nedge %d %d %d %d ",i,graph3->edges[i].vertices[0],
graph3->edges[i].vertices[1],graph3->edges[i].vertices[2]);
printf(" nexts %d %d %d",graph3->edges[i].next_edges[0],
graph3->edges[i].next_edges[1],graph3->edges[i].next_edges[2]);
};
#ifdef DEBUG
for(i=0;i<nvertices;i++){
printf("\nfirst for vertice %d %d ",i,graph3->first_edge[i]);
};
#endif
};
static void bdz_remove_edge(bdz_graph3_t * graph3, cmph_uint32 curr_edge)
{
cmph_uint32 i,j=0,vert,edge1,edge2;
for(i=0;i<3;i++){
vert=graph3->edges[curr_edge].vertices[i];
edge1=graph3->first_edge[vert];
edge2=NULL_EDGE;
while(edge1!=curr_edge&&edge1!=NULL_EDGE){
edge2=edge1;
if(graph3->edges[edge1].vertices[0]==vert){
j=0;
} else if(graph3->edges[edge1].vertices[1]==vert){
j=1;
} else
j=2;
edge1=graph3->edges[edge1].next_edges[j];
};
if(edge1==NULL_EDGE){
printf("\nerror remove edge %d dump graph",curr_edge);
bdz_dump_graph(graph3,graph3->nedges,graph3->nedges+graph3->nedges/4);
exit(-1);
};
if(edge2!=NULL_EDGE){
graph3->edges[edge2].next_edges[j] =
graph3->edges[edge1].next_edges[i];
} else
graph3->first_edge[vert]=
graph3->edges[edge1].next_edges[i];
graph3->vert_degree[vert]--;
};
};
static int bdz_generate_queue(cmph_uint32 nedges, cmph_uint32 nvertices, bdz_queue_t queue, bdz_graph3_t* graph3)
{
cmph_uint32 i,v0,v1,v2;
cmph_uint32 queue_head=0,queue_tail=0;
cmph_uint32 curr_edge;
cmph_uint32 tmp_edge;
cmph_uint8 * marked_edge = (cmph_uint8 *)malloc((size_t)(nedges >> 3) + 1);
memset(marked_edge, 0, (size_t)(nedges >> 3) + 1);
for(i=0;i<nedges;i++){
v0=graph3->edges[i].vertices[0];
v1=graph3->edges[i].vertices[1];
v2=graph3->edges[i].vertices[2];
if(graph3->vert_degree[v0]==1 ||
graph3->vert_degree[v1]==1 ||
graph3->vert_degree[v2]==1){
if(!GETBIT(marked_edge,i)) {
queue[queue_head++]=i;
SETBIT(marked_edge,i);
}
};
};
DEBUGP("Queue head %d Queue tail %d\n", queue_head, queue_tail);
#ifdef DEBUG
bdz_dump_graph(graph3,graph3->nedges,graph3->nedges+graph3->nedges/4);
#endif
while(queue_tail!=queue_head){
curr_edge=queue[queue_tail++];
bdz_remove_edge(graph3,curr_edge);
DEBUGP("Removing edge %d\n", curr_edge);
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
if(graph3->vert_degree[v0]==1 ) {
tmp_edge=graph3->first_edge[v0];
if(!GETBIT(marked_edge,tmp_edge)) {
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v1]==1) {
tmp_edge=graph3->first_edge[v1];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v2]==1){
tmp_edge=graph3->first_edge[v2];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
};
free(marked_edge);
return (int)(queue_head-nedges);/* returns 0 if successful otherwies return negative number*/
};
static int bdz_mapping(cmph_config_t *mph, bdz_graph3_t* graph3, bdz_queue_t queue);
static void assigning(bdz_config_data_t *bdz, bdz_graph3_t* graph3, bdz_queue_t queue);
static void ranking(bdz_config_data_t *bdz);
static cmph_uint32 rank(cmph_uint32 b, cmph_uint32 * ranktable, cmph_uint8 * g, cmph_uint32 vertex);
bdz_config_data_t *bdz_config_new(void)
{
bdz_config_data_t *bdz;
bdz = (bdz_config_data_t *)malloc(sizeof(bdz_config_data_t));
if (!bdz) return NULL;
memset(bdz, 0, sizeof(bdz_config_data_t));
bdz->hashfunc = CMPH_HASH_JENKINS;
bdz->g = NULL;
bdz->hl = NULL;
bdz->k = 0; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
bdz->b = 7; // number of bits of k
bdz->ranktablesize = 0; //number of entries in ranktable, $n/k +1$
bdz->ranktable = NULL; // rank table
return bdz;
}
void bdz_config_destroy(cmph_config_t *mph)
{
bdz_config_data_t *data = (bdz_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bdz_config_set_b(cmph_config_t *mph, cmph_uint32 b)
{
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
if (b <= 2 || b > 10) b = 7; // validating restrictions over parameter b.
bdz->b = (cmph_uint8)b;
DEBUGP("b: %u\n", b);
}
void bdz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint32 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 1) break; //bdz only uses one linear hash function
bdz->hashfunc = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bdz_new(cmph_config_t *mph, double c)
{
cmph_t *mphf = NULL;
bdz_data_t *bdzf = NULL;
cmph_uint32 iterations;
bdz_queue_t edges;
bdz_graph3_t graph3;
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
#ifdef CMPH_TIMING
double construction_time_begin = 0.0;
double construction_time = 0.0;
ELAPSED_TIME_IN_SECONDS(&construction_time_begin);
#endif
if (c == 0) c = 1.23; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bdz->m = mph->key_source->nkeys;
bdz->r = (cmph_uint32)ceil((c * mph->key_source->nkeys)/3);
if ((bdz->r % 2) == 0) bdz->r+=1;
if (bdz->r == 1) { // workaround for small key sets
bdz->r = 3;
}
bdz->n = 3*bdz->r;
bdz->k = (1U << bdz->b);
DEBUGP("b: %u -- k: %u\n", bdz->b, bdz->k);
bdz->ranktablesize = (cmph_uint32)ceil(bdz->n/(double)bdz->k);
DEBUGP("ranktablesize: %u\n", bdz->ranktablesize);
bdz_alloc_graph3(&graph3, bdz->m, bdz->n);
bdz_alloc_queue(&edges,bdz->m);
DEBUGP("Created hypergraph\n");
DEBUGP("m (edges): %u n (vertices): %u r: %u c: %f \n", bdz->m, bdz->n, bdz->r, c);
// Mapping step
iterations = 1000;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
while(1)
{
int ok;
DEBUGP("linear hash function \n");
bdz->hl = hash_state_new(bdz->hashfunc, 15);
ok = bdz_mapping(mph, &graph3, edges);
//ok = 0;
if (!ok)
{
--iterations;
hash_state_destroy(bdz->hl);
bdz->hl = NULL;
DEBUGP("%u iterations remaining\n", iterations);
if (mph->verbosity)
{
fprintf(stderr, "acyclic graph creation failure - %u iterations remaining\n", iterations);
}
if (iterations == 0) break;
}
else break;
}
if (iterations == 0)
{
bdz_free_queue(&edges);
bdz_free_graph3(&graph3);
return NULL;
}
bdz_partial_free_graph3(&graph3);
// Assigning step
if (mph->verbosity)
{
fprintf(stderr, "Entering assigning step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
assigning(bdz, &graph3, edges);
bdz_free_queue(&edges);
bdz_free_graph3(&graph3);
if (mph->verbosity)
{
fprintf(stderr, "Entering ranking step for mph creation of %u keys with graph sized %u\n", bdz->m, bdz->n);
}
ranking(bdz);
#ifdef CMPH_TIMING
ELAPSED_TIME_IN_SECONDS(&construction_time);
#endif
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bdzf = (bdz_data_t *)malloc(sizeof(bdz_data_t));
bdzf->g = bdz->g;
bdz->g = NULL; //transfer memory ownership
bdzf->hl = bdz->hl;
bdz->hl = NULL; //transfer memory ownership
bdzf->ranktable = bdz->ranktable;
bdz->ranktable = NULL; //transfer memory ownership
bdzf->ranktablesize = bdz->ranktablesize;
bdzf->k = bdz->k;
bdzf->b = bdz->b;
bdzf->n = bdz->n;
bdzf->m = bdz->m;
bdzf->r = bdz->r;
mphf->data = bdzf;
mphf->size = bdz->m;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
#ifdef CMPH_TIMING
register cmph_uint32 space_usage = bdz_packed_size(mphf)*8;
register cmph_uint32 keys_per_bucket = 1;
construction_time = construction_time - construction_time_begin;
fprintf(stdout, "%u\t%.2f\t%u\t%.4f\t%.4f\n", bdz->m, bdz->m/(double)bdz->n, keys_per_bucket, construction_time, space_usage/(double)bdz->m);
#endif
return mphf;
}
static int bdz_mapping(cmph_config_t *mph, bdz_graph3_t* graph3, bdz_queue_t queue)
{
cmph_uint32 e;
int cycles = 0;
cmph_uint32 hl[3];
bdz_config_data_t *bdz = (bdz_config_data_t *)mph->data;
bdz_init_graph3(graph3, bdz->m, bdz->n);
mph->key_source->rewind(mph->key_source->data);
for (e = 0; e < mph->key_source->nkeys; ++e)
{
cmph_uint32 h0, h1, h2;
cmph_uint32 keylen;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
hash_vector(bdz->hl, key, keylen,hl);
h0 = hl[0] % bdz->r;
h1 = hl[1] % bdz->r + bdz->r;
h2 = hl[2] % bdz->r + (bdz->r << 1);
DEBUGP("Key: %.*s (%u %u %u)\n", keylen, key, h0, h1, h2);
mph->key_source->dispose(mph->key_source->data, key, keylen);
bdz_add_edge(graph3,h0,h1,h2);
}
cycles = bdz_generate_queue(bdz->m, bdz->n, queue, graph3);
return (cycles == 0);
}
static void assigning(bdz_config_data_t *bdz, bdz_graph3_t* graph3, bdz_queue_t queue)
{
cmph_uint32 i;
cmph_uint32 nedges=graph3->nedges;
cmph_uint32 curr_edge;
cmph_uint32 v0,v1,v2;
cmph_uint8 * marked_vertices = (cmph_uint8 *)malloc((size_t)(bdz->n >> 3) + 1);
cmph_uint32 sizeg = (cmph_uint32)ceil(bdz->n/4.0);
bdz->g = (cmph_uint8 *)calloc((size_t)(sizeg), sizeof(cmph_uint8));
memset(marked_vertices, 0, (size_t)(bdz->n >> 3) + 1);
memset(bdz->g, 0xff, (size_t)(sizeg));
for(i=nedges-1;i+1>=1;i--){
curr_edge=queue[i];
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
DEBUGP("B:%u %u %u -- %u %u %u edge %u\n", v0, v1, v2, GETVALUE(bdz->g, v0), GETVALUE(bdz->g, v1), GETVALUE(bdz->g, v2), curr_edge);
if(!GETBIT(marked_vertices, v0)){
if(!GETBIT(marked_vertices,v1))
{
SETVALUE1(bdz->g, v1, UNASSIGNED);
SETBIT(marked_vertices, v1);
}
if(!GETBIT(marked_vertices,v2))
{
SETVALUE1(bdz->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE1(bdz->g, v0, (6-(GETVALUE(bdz->g, v1) + GETVALUE(bdz->g,v2)))%3);
SETBIT(marked_vertices, v0);
} else if(!GETBIT(marked_vertices, v1)) {
if(!GETBIT(marked_vertices, v2))
{
SETVALUE1(bdz->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE1(bdz->g, v1, (7-(GETVALUE(bdz->g, v0)+GETVALUE(bdz->g, v2)))%3);
SETBIT(marked_vertices, v1);
}else {
SETVALUE1(bdz->g, v2, (8-(GETVALUE(bdz->g,v0)+GETVALUE(bdz->g, v1)))%3);
SETBIT(marked_vertices, v2);
}
DEBUGP("A:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz->g, v0), GETVALUE(bdz->g, v1), GETVALUE(bdz->g, v2));
};
free(marked_vertices);
}
static void ranking(bdz_config_data_t *bdz)
{
cmph_uint32 i, j, offset = 0U, count = 0U, size = (bdz->k >> 2U), nbytes_total = (cmph_uint32)ceil(bdz->n/4.0), nbytes;
bdz->ranktable = (cmph_uint32 *)calloc((size_t)bdz->ranktablesize, sizeof(cmph_uint32));
// ranktable computation
bdz->ranktable[0] = 0;
i = 1;
while(1)
{
if(i == bdz->ranktablesize) break;
nbytes = size < nbytes_total? size : nbytes_total;
for(j = 0; j < nbytes; j++)
{
count += bdz_lookup_table[*(bdz->g + offset + j)];
}
bdz->ranktable[i] = count;
offset += nbytes;
nbytes_total -= size;
i++;
}
}
int bdz_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
register size_t nbytes;
bdz_data_t *data = (bdz_data_t *)mphf->data;
__cmph_dump(mphf, fd);
hash_state_dump(data->hl, &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
nbytes = fwrite(&(data->n), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->m), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->r), sizeof(cmph_uint32), (size_t)1, fd);
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/4.0);
nbytes = fwrite(data->g, sizeof(cmph_uint8)*sizeg, (size_t)1, fd);
nbytes = fwrite(&(data->k), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->b), sizeof(cmph_uint8), (size_t)1, fd);
nbytes = fwrite(&(data->ranktablesize), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(data->ranktable, sizeof(cmph_uint32)*(data->ranktablesize), (size_t)1, fd);
#ifdef DEBUG
cmph_uint32 i;
fprintf(stderr, "G: ");
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", GETVALUE(data->g, i));
fprintf(stderr, "\n");
#endif
return 1;
}
void bdz_load(FILE *f, cmph_t *mphf)
{
char *buf = NULL;
cmph_uint32 buflen, sizeg;
register size_t nbytes;
bdz_data_t *bdz = (bdz_data_t *)malloc(sizeof(bdz_data_t));
DEBUGP("Loading bdz mphf\n");
mphf->data = bdz;
nbytes = fread(&buflen, sizeof(cmph_uint32), (size_t)1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc((size_t)buflen);
nbytes = fread(buf, (size_t)buflen, (size_t)1, f);
bdz->hl = hash_state_load(buf, buflen);
free(buf);
DEBUGP("Reading m and n\n");
nbytes = fread(&(bdz->n), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz->m), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz->r), sizeof(cmph_uint32), (size_t)1, f);
sizeg = (cmph_uint32)ceil(bdz->n/4.0);
bdz->g = (cmph_uint8 *)calloc((size_t)(sizeg), sizeof(cmph_uint8));
nbytes = fread(bdz->g, sizeg*sizeof(cmph_uint8), (size_t)1, f);
nbytes = fread(&(bdz->k), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz->b), sizeof(cmph_uint8), (size_t)1, f);
nbytes = fread(&(bdz->ranktablesize), sizeof(cmph_uint32), (size_t)1, f);
bdz->ranktable = (cmph_uint32 *)calloc((size_t)bdz->ranktablesize, sizeof(cmph_uint32));
nbytes = fread(bdz->ranktable, sizeof(cmph_uint32)*(bdz->ranktablesize), (size_t)1, f);
#ifdef DEBUG
cmph_uint32 i = 0;
fprintf(stderr, "G: ");
for (i = 0; i < bdz->n; ++i) fprintf(stderr, "%u ", GETVALUE(bdz->g,i));
fprintf(stderr, "\n");
#endif
return;
}
static inline cmph_uint32 rank(cmph_uint32 b, cmph_uint32 * ranktable, cmph_uint8 * g, cmph_uint32 vertex)
{
register cmph_uint32 index = vertex >> b;
register cmph_uint32 base_rank = ranktable[index];
register cmph_uint32 beg_idx_v = index << b;
register cmph_uint32 beg_idx_b = beg_idx_v >> 2;
register cmph_uint32 end_idx_b = vertex >> 2;
while(beg_idx_b < end_idx_b)
{
base_rank += bdz_lookup_table[*(g + beg_idx_b++)];
}
DEBUGP("base rank %u\n", base_rank);
beg_idx_v = beg_idx_b << 2;
DEBUGP("beg_idx_v %u\n", beg_idx_v);
while(beg_idx_v < vertex)
{
if(GETVALUE(g, beg_idx_v) != UNASSIGNED) base_rank++;
beg_idx_v++;
}
return base_rank;
}
cmph_uint32 bdz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
register cmph_uint32 vertex;
register bdz_data_t *bdz = (bdz_data_t *)mphf->data;
cmph_uint32 hl[3];
hash_vector(bdz->hl, key, keylen, hl);
hl[0] = hl[0] % bdz->r;
hl[1] = hl[1] % bdz->r + bdz->r;
hl[2] = hl[2] % bdz->r + (bdz->r << 1);
vertex = hl[(GETVALUE(bdz->g, hl[0]) + GETVALUE(bdz->g, hl[1]) + GETVALUE(bdz->g, hl[2])) % 3];
DEBUGP("Search found vertex %u\n", vertex);
return rank(bdz->b, bdz->ranktable, bdz->g, vertex);
}
void bdz_destroy(cmph_t *mphf)
{
bdz_data_t *data = (bdz_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hl);
free(data->ranktable);
free(data);
free(mphf);
}
/** \fn void bdz_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bdz_pack(cmph_t *mphf, void *packed_mphf)
{
bdz_data_t *data = (bdz_data_t *)mphf->data;
cmph_uint8 * ptr = (cmph_uint8 *)packed_mphf;
// packing hl type
CMPH_HASH hl_type = hash_get_type(data->hl);
*((cmph_uint32 *) ptr) = hl_type;
ptr += sizeof(cmph_uint32);
// packing hl
hash_state_pack(data->hl, ptr);
ptr += hash_state_packed_size(hl_type);
// packing r
*((cmph_uint32 *) ptr) = data->r;
ptr += sizeof(data->r);
// packing ranktablesize
*((cmph_uint32 *) ptr) = data->ranktablesize;
ptr += sizeof(data->ranktablesize);
// packing ranktable
memcpy(ptr, data->ranktable, sizeof(cmph_uint32)*(data->ranktablesize));
ptr += sizeof(cmph_uint32)*(data->ranktablesize);
// packing b
*ptr++ = data->b;
// packing g
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/4.0);
memcpy(ptr, data->g, sizeof(cmph_uint8)*sizeg);
}
/** \fn cmph_uint32 bdz_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bdz_packed_size(cmph_t *mphf)
{
bdz_data_t *data = (bdz_data_t *)mphf->data;
CMPH_HASH hl_type = hash_get_type(data->hl);
return (cmph_uint32)(sizeof(CMPH_ALGO) + hash_state_packed_size(hl_type) + 3*sizeof(cmph_uint32) + sizeof(cmph_uint32)*(data->ranktablesize) + sizeof(cmph_uint8) + sizeof(cmph_uint8)* (cmph_uint32)(ceil(data->n/4.0)));
}
/** cmph_uint32 bdz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bdz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
register cmph_uint32 vertex;
register CMPH_HASH hl_type = (CMPH_HASH)(*(cmph_uint32 *)packed_mphf);
register cmph_uint8 *hl_ptr = (cmph_uint8 *)(packed_mphf) + 4;
register cmph_uint32 *ranktable = (cmph_uint32*)(hl_ptr + hash_state_packed_size(hl_type));
register cmph_uint32 r = *ranktable++;
register cmph_uint32 ranktablesize = *ranktable++;
register cmph_uint8 * g = (cmph_uint8 *)(ranktable + ranktablesize);
register cmph_uint8 b = *g++;
cmph_uint32 hl[3];
hash_vector_packed(hl_ptr, hl_type, key, keylen, hl);
hl[0] = hl[0] % r;
hl[1] = hl[1] % r + r;
hl[2] = hl[2] % r + (r << 1);
vertex = hl[(GETVALUE(g, hl[0]) + GETVALUE(g, hl[1]) + GETVALUE(g, hl[2])) % 3];
return rank(b, ranktable, g, vertex);
}

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cmph-2.0.2/src/bdz.h Executable file
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#ifndef __CMPH_BDZ_H__
#define __CMPH_BDZ_H__
#include "cmph.h"
typedef struct __bdz_data_t bdz_data_t;
typedef struct __bdz_config_data_t bdz_config_data_t;
bdz_config_data_t *bdz_config_new(void);
void bdz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void bdz_config_destroy(cmph_config_t *mph);
void bdz_config_set_b(cmph_config_t *mph, cmph_uint32 b);
cmph_t *bdz_new(cmph_config_t *mph, double c);
void bdz_load(FILE *f, cmph_t *mphf);
int bdz_dump(cmph_t *mphf, FILE *f);
void bdz_destroy(cmph_t *mphf);
cmph_uint32 bdz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
/** \fn void bdz_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bdz_pack(cmph_t *mphf, void *packed_mphf);
/** \fn cmph_uint32 bdz_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bdz_packed_size(cmph_t *mphf);
/** cmph_uint32 bdz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bdz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
#endif

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cmph-2.0.2/src/bdz_ph.c Executable file
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#include "bdz_ph.h"
#include "cmph_structs.h"
#include "bdz_structs_ph.h"
#include "hash.h"
#include "bitbool.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
//#define DEBUG
#include "debug.h"
#define UNASSIGNED 3
#define NULL_EDGE 0xffffffff
static cmph_uint8 pow3_table[5] = {1,3,9,27,81};
static cmph_uint8 lookup_table[5][256] = {
{0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0},
{0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1, 1, 1, 2, 2, 2, 0, 0, 0, 1},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
};
typedef struct
{
cmph_uint32 vertices[3];
cmph_uint32 next_edges[3];
}bdz_ph_edge_t;
typedef cmph_uint32 * bdz_ph_queue_t;
static void bdz_ph_alloc_queue(bdz_ph_queue_t * queuep, cmph_uint32 nedges)
{
(*queuep)=(cmph_uint32 *)malloc(nedges*sizeof(cmph_uint32));
};
static void bdz_ph_free_queue(bdz_ph_queue_t * queue)
{
free(*queue);
};
typedef struct
{
cmph_uint32 nedges;
bdz_ph_edge_t * edges;
cmph_uint32 * first_edge;
cmph_uint8 * vert_degree;
}bdz_ph_graph3_t;
static void bdz_ph_alloc_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
graph3->edges=(bdz_ph_edge_t *)malloc(nedges*sizeof(bdz_ph_edge_t));
graph3->first_edge=(cmph_uint32 *)malloc(nvertices*sizeof(cmph_uint32));
graph3->vert_degree=(cmph_uint8 *)malloc((size_t)nvertices);
};
static void bdz_ph_init_graph3(bdz_ph_graph3_t * graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
memset(graph3->first_edge,0xff,nvertices*sizeof(cmph_uint32));
memset(graph3->vert_degree,0,(size_t)nvertices);
graph3->nedges=0;
};
static void bdz_ph_free_graph3(bdz_ph_graph3_t *graph3)
{
free(graph3->edges);
free(graph3->first_edge);
free(graph3->vert_degree);
};
static void bdz_ph_partial_free_graph3(bdz_ph_graph3_t *graph3)
{
free(graph3->first_edge);
free(graph3->vert_degree);
graph3->first_edge = NULL;
graph3->vert_degree = NULL;
};
static void bdz_ph_add_edge(bdz_ph_graph3_t * graph3, cmph_uint32 v0, cmph_uint32 v1, cmph_uint32 v2)
{
graph3->edges[graph3->nedges].vertices[0]=v0;
graph3->edges[graph3->nedges].vertices[1]=v1;
graph3->edges[graph3->nedges].vertices[2]=v2;
graph3->edges[graph3->nedges].next_edges[0]=graph3->first_edge[v0];
graph3->edges[graph3->nedges].next_edges[1]=graph3->first_edge[v1];
graph3->edges[graph3->nedges].next_edges[2]=graph3->first_edge[v2];
graph3->first_edge[v0]=graph3->first_edge[v1]=graph3->first_edge[v2]=graph3->nedges;
graph3->vert_degree[v0]++;
graph3->vert_degree[v1]++;
graph3->vert_degree[v2]++;
graph3->nedges++;
};
static void bdz_ph_dump_graph(bdz_ph_graph3_t* graph3, cmph_uint32 nedges, cmph_uint32 nvertices)
{
cmph_uint32 i;
for(i=0;i<nedges;i++){
printf("\nedge %d %d %d %d ",i,graph3->edges[i].vertices[0],
graph3->edges[i].vertices[1],graph3->edges[i].vertices[2]);
printf(" nexts %d %d %d",graph3->edges[i].next_edges[0],
graph3->edges[i].next_edges[1],graph3->edges[i].next_edges[2]);
};
for(i=0;i<nvertices;i++){
printf("\nfirst for vertice %d %d ",i,graph3->first_edge[i]);
};
};
static void bdz_ph_remove_edge(bdz_ph_graph3_t * graph3, cmph_uint32 curr_edge)
{
cmph_uint32 i,j=0,vert,edge1,edge2;
for(i=0;i<3;i++){
vert=graph3->edges[curr_edge].vertices[i];
edge1=graph3->first_edge[vert];
edge2=NULL_EDGE;
while(edge1!=curr_edge&&edge1!=NULL_EDGE){
edge2=edge1;
if(graph3->edges[edge1].vertices[0]==vert){
j=0;
} else if(graph3->edges[edge1].vertices[1]==vert){
j=1;
} else
j=2;
edge1=graph3->edges[edge1].next_edges[j];
};
if(edge1==NULL_EDGE){
printf("\nerror remove edge %d dump graph",curr_edge);
bdz_ph_dump_graph(graph3,graph3->nedges,graph3->nedges+graph3->nedges/4);
exit(-1);
};
if(edge2!=NULL_EDGE){
graph3->edges[edge2].next_edges[j] =
graph3->edges[edge1].next_edges[i];
} else
graph3->first_edge[vert]=
graph3->edges[edge1].next_edges[i];
graph3->vert_degree[vert]--;
};
};
static int bdz_ph_generate_queue(cmph_uint32 nedges, cmph_uint32 nvertices, bdz_ph_queue_t queue, bdz_ph_graph3_t* graph3)
{
cmph_uint32 i,v0,v1,v2;
cmph_uint32 queue_head=0,queue_tail=0;
cmph_uint32 curr_edge;
cmph_uint32 tmp_edge;
cmph_uint8 * marked_edge =(cmph_uint8 *)malloc((size_t)(nedges >> 3) + 1);
memset(marked_edge, 0, (size_t)(nedges >> 3) + 1);
for(i=0;i<nedges;i++){
v0=graph3->edges[i].vertices[0];
v1=graph3->edges[i].vertices[1];
v2=graph3->edges[i].vertices[2];
if(graph3->vert_degree[v0]==1 ||
graph3->vert_degree[v1]==1 ||
graph3->vert_degree[v2]==1){
if(!GETBIT(marked_edge,i)) {
queue[queue_head++]=i;
SETBIT(marked_edge,i);
}
};
};
while(queue_tail!=queue_head){
curr_edge=queue[queue_tail++];
bdz_ph_remove_edge(graph3,curr_edge);
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
if(graph3->vert_degree[v0]==1 ) {
tmp_edge=graph3->first_edge[v0];
if(!GETBIT(marked_edge,tmp_edge)) {
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v1]==1) {
tmp_edge=graph3->first_edge[v1];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
if(graph3->vert_degree[v2]==1){
tmp_edge=graph3->first_edge[v2];
if(!GETBIT(marked_edge,tmp_edge)){
queue[queue_head++]=tmp_edge;
SETBIT(marked_edge,tmp_edge);
};
};
};
free(marked_edge);
return (int)queue_head - (int)nedges;/* returns 0 if successful otherwies return negative number*/
};
static int bdz_ph_mapping(cmph_config_t *mph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
static void assigning(bdz_ph_config_data_t *bdz_ph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue);
static void bdz_ph_optimization(bdz_ph_config_data_t *bdz_ph);
bdz_ph_config_data_t *bdz_ph_config_new(void)
{
bdz_ph_config_data_t *bdz_ph;
bdz_ph = (bdz_ph_config_data_t *)malloc(sizeof(bdz_ph_config_data_t));
assert(bdz_ph);
memset(bdz_ph, 0, sizeof(bdz_ph_config_data_t));
bdz_ph->hashfunc = CMPH_HASH_JENKINS;
bdz_ph->g = NULL;
bdz_ph->hl = NULL;
return bdz_ph;
}
void bdz_ph_config_destroy(cmph_config_t *mph)
{
bdz_ph_config_data_t *data = (bdz_ph_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bdz_ph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint32 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 1) break; //bdz_ph only uses one linear hash function
bdz_ph->hashfunc = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bdz_ph_new(cmph_config_t *mph, double c)
{
cmph_t *mphf = NULL;
bdz_ph_data_t *bdz_phf = NULL;
cmph_uint32 iterations;
bdz_ph_queue_t edges;
bdz_ph_graph3_t graph3;
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
#ifdef CMPH_TIMING
double construction_time_begin = 0.0;
double construction_time = 0.0;
ELAPSED_TIME_IN_SECONDS(&construction_time_begin);
#endif
if (c == 0) c = 1.23; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bdz_ph->m = mph->key_source->nkeys;
bdz_ph->r = (cmph_uint32)ceil((c * mph->key_source->nkeys)/3);
if ((bdz_ph->r % 2) == 0) bdz_ph->r += 1;
if (bdz_ph->r == 1) { // workaround for small key sets
bdz_ph->r = 3;
}
bdz_ph->n = 3*bdz_ph->r;
bdz_ph_alloc_graph3(&graph3, bdz_ph->m, bdz_ph->n);
bdz_ph_alloc_queue(&edges,bdz_ph->m);
DEBUGP("Created hypergraph\n");
DEBUGP("m (edges): %u n (vertices): %u r: %u c: %f \n", bdz_ph->m, bdz_ph->n, bdz_ph->r, c);
// Mapping step
iterations = 100;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bdz_ph->m, bdz_ph->n);
}
while(1)
{
int ok;
DEBUGP("linear hash function \n");
bdz_ph->hl = hash_state_new(bdz_ph->hashfunc, 15);
ok = bdz_ph_mapping(mph, &graph3, edges);
if (!ok)
{
--iterations;
hash_state_destroy(bdz_ph->hl);
bdz_ph->hl = NULL;
DEBUGP("%u iterations remaining\n", iterations);
if (mph->verbosity)
{
fprintf(stderr, "acyclic graph creation failure - %u iterations remaining\n", iterations);
}
if (iterations == 0) break;
}
else break;
}
if (iterations == 0)
{
// free(bdz_ph->g);
bdz_ph_free_queue(&edges);
bdz_ph_free_graph3(&graph3);
return NULL;
}
bdz_ph_partial_free_graph3(&graph3);
// Assigning step
if (mph->verbosity)
{
fprintf(stderr, "Entering assigning step for mph creation of %u keys with graph sized %u\n", bdz_ph->m, bdz_ph->n);
}
assigning(bdz_ph, &graph3, edges);
bdz_ph_free_queue(&edges);
bdz_ph_free_graph3(&graph3);
if (mph->verbosity)
{
fprintf(stderr, "Starting optimization step\n");
}
bdz_ph_optimization(bdz_ph);
#ifdef CMPH_TIMING
ELAPSED_TIME_IN_SECONDS(&construction_time);
#endif
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bdz_phf = (bdz_ph_data_t *)malloc(sizeof(bdz_ph_data_t));
bdz_phf->g = bdz_ph->g;
bdz_ph->g = NULL; //transfer memory ownership
bdz_phf->hl = bdz_ph->hl;
bdz_ph->hl = NULL; //transfer memory ownership
bdz_phf->n = bdz_ph->n;
bdz_phf->m = bdz_ph->m;
bdz_phf->r = bdz_ph->r;
mphf->data = bdz_phf;
mphf->size = bdz_ph->n;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
#ifdef CMPH_TIMING
register cmph_uint32 space_usage = bdz_ph_packed_size(mphf)*8;
register cmph_uint32 keys_per_bucket = 1;
construction_time = construction_time - construction_time_begin;
fprintf(stdout, "%u\t%.2f\t%u\t%.4f\t%.4f\n", bdz_ph->m, bdz_ph->m/(double)bdz_ph->n, keys_per_bucket, construction_time, space_usage/(double)bdz_ph->m);
#endif
return mphf;
}
static int bdz_ph_mapping(cmph_config_t *mph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue)
{
cmph_uint32 e;
int cycles = 0;
cmph_uint32 hl[3];
bdz_ph_config_data_t *bdz_ph = (bdz_ph_config_data_t *)mph->data;
bdz_ph_init_graph3(graph3, bdz_ph->m, bdz_ph->n);
mph->key_source->rewind(mph->key_source->data);
for (e = 0; e < mph->key_source->nkeys; ++e)
{
cmph_uint32 h0, h1, h2;
cmph_uint32 keylen;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
hash_vector(bdz_ph->hl, key, keylen, hl);
h0 = hl[0] % bdz_ph->r;
h1 = hl[1] % bdz_ph->r + bdz_ph->r;
h2 = hl[2] % bdz_ph->r + (bdz_ph->r << 1);
mph->key_source->dispose(mph->key_source->data, key, keylen);
bdz_ph_add_edge(graph3,h0,h1,h2);
}
cycles = bdz_ph_generate_queue(bdz_ph->m, bdz_ph->n, queue, graph3);
return (cycles == 0);
}
static void assigning(bdz_ph_config_data_t *bdz_ph, bdz_ph_graph3_t* graph3, bdz_ph_queue_t queue)
{
cmph_uint32 i;
cmph_uint32 nedges=graph3->nedges;
cmph_uint32 curr_edge;
cmph_uint32 v0,v1,v2;
cmph_uint8 * marked_vertices = (cmph_uint8 *)malloc((size_t)(bdz_ph->n >> 3) + 1);
cmph_uint32 sizeg = (cmph_uint32)ceil(bdz_ph->n/4.0);
bdz_ph->g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
memset(marked_vertices, 0, (size_t)(bdz_ph->n >> 3) + 1);
//memset(bdz_ph->g, 0xff, sizeg);
for(i=nedges-1;i+1>=1;i--){
curr_edge=queue[i];
v0=graph3->edges[curr_edge].vertices[0];
v1=graph3->edges[curr_edge].vertices[1];
v2=graph3->edges[curr_edge].vertices[2];
DEBUGP("B:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz_ph->g, v0), GETVALUE(bdz_ph->g, v1), GETVALUE(bdz_ph->g, v2));
if(!GETBIT(marked_vertices, v0)){
if(!GETBIT(marked_vertices,v1))
{
//SETVALUE(bdz_ph->g, v1, UNASSIGNED);
SETBIT(marked_vertices, v1);
}
if(!GETBIT(marked_vertices,v2))
{
//SETVALUE(bdz_ph->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE0(bdz_ph->g, v0, (6-(GETVALUE(bdz_ph->g, v1) + GETVALUE(bdz_ph->g,v2)))%3);
SETBIT(marked_vertices, v0);
} else if(!GETBIT(marked_vertices, v1)) {
if(!GETBIT(marked_vertices, v2))
{
//SETVALUE(bdz_ph->g, v2, UNASSIGNED);
SETBIT(marked_vertices, v2);
}
SETVALUE0(bdz_ph->g, v1, (7 - (GETVALUE(bdz_ph->g, v0)+GETVALUE(bdz_ph->g, v2)))%3);
SETBIT(marked_vertices, v1);
}else {
SETVALUE0(bdz_ph->g, v2, (8-(GETVALUE(bdz_ph->g,v0)+GETVALUE(bdz_ph->g, v1)))%3);
SETBIT(marked_vertices, v2);
}
DEBUGP("A:%u %u %u -- %u %u %u\n", v0, v1, v2, GETVALUE(bdz_ph->g, v0), GETVALUE(bdz_ph->g, v1), GETVALUE(bdz_ph->g, v2));
};
free(marked_vertices);
}
static void bdz_ph_optimization(bdz_ph_config_data_t *bdz_ph)
{
cmph_uint32 i;
cmph_uint8 byte = 0;
cmph_uint32 sizeg = (cmph_uint32)ceil(bdz_ph->n/5.0);
cmph_uint8 * new_g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
cmph_uint8 value;
cmph_uint32 idx;
for(i = 0; i < bdz_ph->n; i++)
{
idx = i/5;
byte = new_g[idx];
value = GETVALUE(bdz_ph->g, i);
byte = (cmph_uint8) (byte + value*pow3_table[i%5U]);
new_g[idx] = byte;
}
free(bdz_ph->g);
bdz_ph->g = new_g;
}
int bdz_ph_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 sizeg = 0;
register size_t nbytes;
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
__cmph_dump(mphf, fd);
hash_state_dump(data->hl, &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
nbytes = fwrite(&(data->n), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->m), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->r), sizeof(cmph_uint32), (size_t)1, fd);
sizeg = (cmph_uint32)ceil(data->n/5.0);
nbytes = fwrite(data->g, sizeof(cmph_uint8)*sizeg, (size_t)1, fd);
#ifdef DEBUG
cmph_uint32 i;
fprintf(stderr, "G: ");
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", GETVALUE(data->g, i));
fprintf(stderr, "\n");
#endif
return 1;
}
void bdz_ph_load(FILE *f, cmph_t *mphf)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 sizeg = 0;
register size_t nbytes;
bdz_ph_data_t *bdz_ph = (bdz_ph_data_t *)malloc(sizeof(bdz_ph_data_t));
DEBUGP("Loading bdz_ph mphf\n");
mphf->data = bdz_ph;
nbytes = fread(&buflen, sizeof(cmph_uint32), (size_t)1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc((size_t)buflen);
nbytes = fread(buf, (size_t)buflen, (size_t)1, f);
bdz_ph->hl = hash_state_load(buf, buflen);
free(buf);
DEBUGP("Reading m and n\n");
nbytes = fread(&(bdz_ph->n), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz_ph->m), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bdz_ph->r), sizeof(cmph_uint32), (size_t)1, f);
sizeg = (cmph_uint32)ceil(bdz_ph->n/5.0);
bdz_ph->g = (cmph_uint8 *)calloc((size_t)sizeg, sizeof(cmph_uint8));
nbytes = fread(bdz_ph->g, sizeg*sizeof(cmph_uint8), (size_t)1, f);
return;
}
cmph_uint32 bdz_ph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
register bdz_ph_data_t *bdz_ph = (bdz_ph_data_t *)mphf->data;
cmph_uint32 hl[3];
register cmph_uint8 byte0, byte1, byte2;
register cmph_uint32 vertex;
hash_vector(bdz_ph->hl, key, keylen,hl);
hl[0] = hl[0] % bdz_ph->r;
hl[1] = hl[1] % bdz_ph->r + bdz_ph->r;
hl[2] = hl[2] % bdz_ph->r + (bdz_ph->r << 1);
byte0 = bdz_ph->g[hl[0]/5];
byte1 = bdz_ph->g[hl[1]/5];
byte2 = bdz_ph->g[hl[2]/5];
byte0 = lookup_table[hl[0]%5U][byte0];
byte1 = lookup_table[hl[1]%5U][byte1];
byte2 = lookup_table[hl[2]%5U][byte2];
vertex = hl[(byte0 + byte1 + byte2)%3];
return vertex;
}
void bdz_ph_destroy(cmph_t *mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hl);
free(data);
free(mphf);
}
/** \fn void bdz_ph_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bdz_ph_pack(cmph_t *mphf, void *packed_mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
cmph_uint8 * ptr = (cmph_uint8 *)packed_mphf;
// packing hl type
CMPH_HASH hl_type = hash_get_type(data->hl);
*((cmph_uint32 *) ptr) = hl_type;
ptr += sizeof(cmph_uint32);
// packing hl
hash_state_pack(data->hl, ptr);
ptr += hash_state_packed_size(hl_type);
// packing r
*((cmph_uint32 *) ptr) = data->r;
ptr += sizeof(data->r);
// packing g
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/5.0);
memcpy(ptr, data->g, sizeof(cmph_uint8)*sizeg);
}
/** \fn cmph_uint32 bdz_ph_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bdz_ph_packed_size(cmph_t *mphf)
{
bdz_ph_data_t *data = (bdz_ph_data_t *)mphf->data;
CMPH_HASH hl_type = hash_get_type(data->hl);
cmph_uint32 sizeg = (cmph_uint32)ceil(data->n/5.0);
return (cmph_uint32) (sizeof(CMPH_ALGO) + hash_state_packed_size(hl_type) + 2*sizeof(cmph_uint32) + sizeof(cmph_uint8)*sizeg);
}
/** cmph_uint32 bdz_ph_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bdz_ph_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
register CMPH_HASH hl_type = (CMPH_HASH)*(cmph_uint32 *)packed_mphf;
register cmph_uint8 *hl_ptr = (cmph_uint8 *)(packed_mphf) + 4;
register cmph_uint8 * ptr = hl_ptr + hash_state_packed_size(hl_type);
register cmph_uint32 r = *((cmph_uint32*) ptr);
register cmph_uint8 * g = ptr + 4;
cmph_uint32 hl[3];
register cmph_uint8 byte0, byte1, byte2;
register cmph_uint32 vertex;
hash_vector_packed(hl_ptr, hl_type, key, keylen, hl);
hl[0] = hl[0] % r;
hl[1] = hl[1] % r + r;
hl[2] = hl[2] % r + (r << 1);
byte0 = g[hl[0]/5];
byte1 = g[hl[1]/5];
byte2 = g[hl[2]/5];
byte0 = lookup_table[hl[0]%5][byte0];
byte1 = lookup_table[hl[1]%5][byte1];
byte2 = lookup_table[hl[2]%5][byte2];
vertex = hl[(byte0 + byte1 + byte2)%3];
return vertex;
}

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#ifndef __CMPH_BDZ_PH_H__
#define __CMPH_BDZ_PH_H__
#include "cmph.h"
typedef struct __bdz_ph_data_t bdz_ph_data_t;
typedef struct __bdz_ph_config_data_t bdz_ph_config_data_t;
bdz_ph_config_data_t *bdz_ph_config_new(void);
void bdz_ph_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void bdz_ph_config_destroy(cmph_config_t *mph);
cmph_t *bdz_ph_new(cmph_config_t *mph, double c);
void bdz_ph_load(FILE *f, cmph_t *mphf);
int bdz_ph_dump(cmph_t *mphf, FILE *f);
void bdz_ph_destroy(cmph_t *mphf);
cmph_uint32 bdz_ph_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
/** \fn void bdz_ph_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bdz_ph_pack(cmph_t *mphf, void *packed_mphf);
/** \fn cmph_uint32 bdz_ph_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bdz_ph_packed_size(cmph_t *mphf);
/** cmph_uint32 bdz_ph_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bdz_ph_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
#endif

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#ifndef __CMPH_BDZ_STRUCTS_H__
#define __CMPH_BDZ_STRUCTS_H__
#include "hash_state.h"
struct __bdz_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
cmph_uint32 k; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
cmph_uint8 b; // number of bits of k
cmph_uint32 ranktablesize; //number of entries in ranktable, $n/k +1$
cmph_uint32 *ranktable; // rank table
};
struct __bdz_config_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
cmph_uint32 k; //kth index in ranktable, $k = log_2(n=3r)/\varepsilon$
cmph_uint8 b; // number of bits of k
cmph_uint32 ranktablesize; //number of entries in ranktable, $n/k +1$
cmph_uint32 *ranktable; // rank table
CMPH_HASH hashfunc;
};
#endif

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cmph-2.0.2/src/bdz_structs_ph.h Executable file
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#ifndef __CMPH_BDZ_STRUCTS_PH_H__
#define __CMPH_BDZ_STRUCTS_PH_H__
#include "hash_state.h"
struct __bdz_ph_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
};
struct __bdz_ph_config_data_t
{
CMPH_HASH hashfunc;
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 r; //partition vertex count
cmph_uint8 *g;
hash_state_t *hl; // linear hashing
};
#endif

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#ifndef _CMPH_BITBOOL_H__
#define _CMPH_BITBOOL_H__
#include "cmph_types.h"
static const cmph_uint8 bitmask[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7 };
static const cmph_uint32 bitmask32[] = { 1, 1 << 1, 1 << 2, 1 << 3, 1 << 4, 1 << 5, 1 << 6, 1 << 7,
1 << 8, 1 << 9, 1 << 10, 1 << 11, 1 << 12, 1 << 13, 1 << 14, 1 << 15,
1 << 16, 1 << 17, 1 << 18, 1 << 19, 1 << 20, 1 << 21, 1 << 22, 1 << 23,
1 << 24, 1 << 25, 1 << 26, 1 << 27, 1 << 28, 1 << 29, 1 << 30, 1U << 31
};
static const cmph_uint8 valuemask[] = { 0xfc, 0xf3, 0xcf, 0x3f};
/** \def GETBIT(array, i)
* \brief get the value of an 1-bit integer stored in an array.
* \param array to get 1-bit integer values from
* \param i is the index in array to get the 1-bit integer value from
*
* GETBIT(array, i) is a macro that gets the value of an 1-bit integer stored in array.
*/
#define GETBIT(array, i) ((array[i >> 3] & bitmask[i & 0x00000007]) >> (i & 0x00000007))
/** \def SETBIT(array, i)
* \brief set 1 to an 1-bit integer stored in an array.
* \param array to store 1-bit integer values
* \param i is the index in array to set the the bit to 1
*
* SETBIT(array, i) is a macro that sets 1 to an 1-bit integer stored in an array.
*/
#define SETBIT(array, i) (array[i >> 3] |= bitmask[i & 0x00000007])
//#define GETBIT(array, i) (array[(i) / 8] & bitmask[(i) % 8])
//#define SETBIT(array, i) (array[(i) / 8] |= bitmask[(i) % 8])
//#define UNSETBIT(array, i) (array[(i) / 8] ^= ((bitmask[(i) % 8])))
/** \def SETVALUE1(array, i, v)
* \brief set a value for a 2-bit integer stored in an array initialized with 1s.
* \param array to store 2-bit integer values
* \param i is the index in array to set the value v
* \param v is the value to be set
*
* SETVALUE1(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
* The array should be initialized with all bits set to 1. For example:
* memset(array, 0xff, arraySize);
*/
#define SETVALUE1(array, i, v) (array[i >> 2] &= (cmph_uint8)((v << ((i & 0x00000003) << 1)) | valuemask[i & 0x00000003]))
/** \def SETVALUE0(array, i, v)
* \brief set a value for a 2-bit integer stored in an array initialized with 0s.
* \param array to store 2-bit integer values
* \param i is the index in array to set the value v
* \param v is the value to be set
*
* SETVALUE0(array, i, v) is a macro that set a value for a 2-bit integer stored in an array.
* The array should be initialized with all bits set to 0. For example:
* memset(array, 0, arraySize);
*/
#define SETVALUE0(array, i, v) (array[i >> 2] |= (cmph_uint8)(v << ((i & 0x00000003) << 1)))
/** \def GETVALUE(array, i)
* \brief get a value for a 2-bit integer stored in an array.
* \param array to get 2-bit integer values from
* \param i is the index in array to get the value from
*
* GETVALUE(array, i) is a macro that get a value for a 2-bit integer stored in an array.
*/
#define GETVALUE(array, i) ((cmph_uint8)((array[i >> 2] >> ((i & 0x00000003U) << 1U)) & 0x00000003U))
/** \def SETBIT32(array, i)
* \brief set 1 to an 1-bit integer stored in an array of 32-bit words.
* \param array to store 1-bit integer values. The entries are 32-bit words.
* \param i is the index in array to set the the bit to 1
*
* SETBIT32(array, i) is a macro that sets 1 to an 1-bit integer stored in an array of 32-bit words.
*/
#define SETBIT32(array, i) (array[i >> 5] |= bitmask32[i & 0x0000001f])
/** \def GETBIT32(array, i)
* \brief get the value of an 1-bit integer stored in an array of 32-bit words.
* \param array to get 1-bit integer values from. The entries are 32-bit words.
* \param i is the index in array to get the 1-bit integer value from
*
* GETBIT32(array, i) is a macro that gets the value of an 1-bit integer stored in an array of 32-bit words.
*/
#define GETBIT32(array, i) (array[i >> 5] & bitmask32[i & 0x0000001f])
/** \def UNSETBIT32(array, i)
* \brief set 0 to an 1-bit integer stored in an array of 32-bit words.
* \param array to store 1-bit integer values. The entries ar 32-bit words
* \param i is the index in array to set the the bit to 0
*
* UNSETBIT32(array, i) is a macro that sets 0 to an 1-bit integer stored in an array of 32-bit words.
*/
#define UNSETBIT32(array, i) (array[i >> 5] ^= ((bitmask32[i & 0x0000001f])))
#define BITS_TABLE_SIZE(n, bits_length) ((n * bits_length + 31) >> 5)
static inline void set_bits_value(cmph_uint32 * bits_table, cmph_uint32 index, cmph_uint32 bits_string,
cmph_uint32 string_length, cmph_uint32 string_mask)
{
register cmph_uint32 bit_idx = index * string_length;
register cmph_uint32 word_idx = bit_idx >> 5;
register cmph_uint32 shift1 = bit_idx & 0x0000001f;
register cmph_uint32 shift2 = 32 - shift1;
bits_table[word_idx] &= ~((string_mask) << shift1);
bits_table[word_idx] |= bits_string << shift1;
if(shift2 < string_length)
{
bits_table[word_idx+1] &= ~((string_mask) >> shift2);
bits_table[word_idx+1] |= bits_string >> shift2;
};
};
static inline cmph_uint32 get_bits_value(cmph_uint32 * bits_table,cmph_uint32 index, cmph_uint32 string_length, cmph_uint32 string_mask)
{
register cmph_uint32 bit_idx = index * string_length;
register cmph_uint32 word_idx = bit_idx >> 5;
register cmph_uint32 shift1 = bit_idx & 0x0000001f;
register cmph_uint32 shift2 = 32-shift1;
register cmph_uint32 bits_string;
bits_string = (bits_table[word_idx] >> shift1) & string_mask;
if(shift2 < string_length)
bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
return bits_string;
};
static inline void set_bits_at_pos(cmph_uint32 * bits_table, cmph_uint32 pos, cmph_uint32 bits_string, cmph_uint32 string_length)
{
register cmph_uint32 word_idx = pos >> 5;
register cmph_uint32 shift1 = pos & 0x0000001f;
register cmph_uint32 shift2 = 32-shift1;
register cmph_uint32 string_mask = (1U << string_length) - 1;
bits_table[word_idx] &= ~((string_mask) << shift1);
bits_table[word_idx] |= bits_string << shift1;
if(shift2 < string_length)
{
bits_table[word_idx+1] &= ~((string_mask) >> shift2);
bits_table[word_idx+1] |= bits_string >> shift2;
}
};
static inline cmph_uint32 get_bits_at_pos(cmph_uint32 * bits_table,cmph_uint32 pos,cmph_uint32 string_length)
{
register cmph_uint32 word_idx = pos >> 5;
register cmph_uint32 shift1 = pos & 0x0000001f;
register cmph_uint32 shift2 = 32 - shift1;
register cmph_uint32 string_mask = (1U << string_length) - 1;
register cmph_uint32 bits_string;
bits_string = (bits_table[word_idx] >> shift1) & string_mask;
if(shift2 < string_length)
bits_string |= (bits_table[word_idx+1] << shift2) & string_mask;
return bits_string;
}
#endif

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#include <stdlib.h>
#include <string.h>
#include "bitbool.h"
#include "cmph.h"
#include "cmph_benchmark.h"
#include "linear_string_map.h"
// Generates a vector with random unique 32 bits integers
cmph_uint32* random_numbers_vector_new(cmph_uint32 size) {
cmph_uint32 i = 0;
cmph_uint32 dup_bits = sizeof(cmph_uint32)*size*8;
char* dup = (char*)malloc(dup_bits/8);
cmph_uint32* vec = (cmph_uint32 *)malloc(sizeof(cmph_uint32)*size);
memset(dup, 0, dup_bits/8);
for (i = 0; i < size; ++i) {
cmph_uint32 v = random();
while (GETBIT(dup, v % dup_bits)) { v = random(); }
SETBIT(dup, v % dup_bits);
vec[i] = v;
}
free(dup);
return vec;
}
int cmph_uint32_cmp(const void *a, const void *b) {
return *(const cmph_uint32*)a - *(const cmph_uint32*)b;
}
char* create_lsmap_key(CMPH_ALGO algo, int iters) {
char mphf_name[128];
snprintf(mphf_name, 128, "%s:%u", cmph_names[algo], iters);
return strdup(mphf_name);
}
static cmph_uint32 g_numbers_len = 0;
static cmph_uint32 *g_numbers = NULL;
static lsmap_t *g_created_mphf = NULL;
static lsmap_t *g_expected_probes = NULL;
static lsmap_t *g_mphf_probes = NULL;
void bm_create(CMPH_ALGO algo, int iters) {
cmph_io_adapter_t* source = NULL;
cmph_config_t* config = NULL;
cmph_t* mphf = NULL;
if (iters > (int)g_numbers_len) {
fprintf(stderr, "No input with proper size.");
exit(-1);
}
source = cmph_io_struct_vector_adapter(
(void*)g_numbers, sizeof(cmph_uint32),
0, sizeof(cmph_uint32), iters);
config = cmph_config_new(source);
cmph_config_set_algo(config, algo);
mphf = cmph_new(config);
if (!mphf) {
fprintf(stderr, "Failed to create mphf for algorithm %s with %u keys",
cmph_names[algo], iters);
exit(-1);
}
cmph_config_destroy(config);
cmph_io_struct_vector_adapter_destroy(source);
lsmap_append(g_created_mphf, create_lsmap_key(algo, iters), mphf);
}
void bm_search(CMPH_ALGO algo, int iters) {
int i = 0;
char *mphf_name;
cmph_t* mphf = NULL;
mphf_name = create_lsmap_key(algo, iters);
mphf = (cmph_t*)lsmap_search(g_created_mphf, mphf_name);
free(mphf_name);
cmph_uint32* count = (cmph_uint32*)malloc(sizeof(cmph_uint32)*iters);
cmph_uint32* hash_count = (cmph_uint32*)malloc(sizeof(cmph_uint32)*iters);
for (i = 0; i < iters * 100; ++i) {
cmph_uint32 pos = random() % iters;
const char* buf = (const char*)(g_numbers + pos);
cmph_uint32 h = cmph_search(mphf, buf, sizeof(cmph_uint32));
++count[pos];
++hash_count[h];
}
// Verify correctness later.
lsmap_append(g_expected_probes, create_lsmap_key(algo, iters), count);
lsmap_append(g_mphf_probes, create_lsmap_key(algo, iters), hash_count);
}
void verify() { }
#define DECLARE_ALGO(algo) \
void bm_create_ ## algo(int iters) { bm_create(algo, iters); } \
void bm_search_ ## algo(int iters) { bm_search(algo, iters); }
DECLARE_ALGO(CMPH_BMZ);
DECLARE_ALGO(CMPH_CHM);
DECLARE_ALGO(CMPH_BRZ);
DECLARE_ALGO(CMPH_FCH);
DECLARE_ALGO(CMPH_BDZ);
int main(int argc, char** argv) {
g_numbers_len = 1000 * 1000;
g_numbers = random_numbers_vector_new(g_numbers_len);
g_created_mphf = lsmap_new();
g_expected_probes = lsmap_new();
g_mphf_probes = lsmap_new();
BM_REGISTER(bm_create_CMPH_BMZ, 1000 * 1000);
BM_REGISTER(bm_search_CMPH_BMZ, 1000 * 1000);
BM_REGISTER(bm_create_CMPH_CHM, 1000 * 1000);
BM_REGISTER(bm_search_CMPH_CHM, 1000 * 1000);
// BM_REGISTER(bm_create_CMPH_BRZ, 1000 * 1000);
// BM_REGISTER(bm_search_CMPH_BRZ, 1000 * 1000);
// BM_REGISTER(bm_create_CMPH_FCH, 1000 * 1000);
// BM_REGISTER(bm_search_CMPH_FCH, 1000 * 1000);
BM_REGISTER(bm_create_CMPH_BDZ, 1000 * 1000);
BM_REGISTER(bm_search_CMPH_BDZ, 1000 * 1000);
run_benchmarks(argc, argv);
verify();
free(g_numbers);
lsmap_foreach_key(g_created_mphf, (void(*)(const char*))free);
lsmap_foreach_value(g_created_mphf, (void(*)(void*))cmph_destroy);
lsmap_destroy(g_created_mphf);
return 0;
}

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#include "graph.h"
#include "bmz.h"
#include "cmph_structs.h"
#include "bmz_structs.h"
#include "hash.h"
#include "vqueue.h"
#include "bitbool.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
// #define DEBUG
#include "debug.h"
static int bmz_gen_edges(cmph_config_t *mph);
static cmph_uint8 bmz_traverse_critical_nodes(bmz_config_data_t *bmz, cmph_uint32 v, cmph_uint32 * biggest_g_value, cmph_uint32 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
static cmph_uint8 bmz_traverse_critical_nodes_heuristic(bmz_config_data_t *bmz, cmph_uint32 v, cmph_uint32 * biggest_g_value, cmph_uint32 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
static void bmz_traverse_non_critical_nodes(bmz_config_data_t *bmz, cmph_uint8 * used_edges, cmph_uint8 * visited);
bmz_config_data_t *bmz_config_new(void)
{
bmz_config_data_t *bmz = NULL;
bmz = (bmz_config_data_t *)malloc(sizeof(bmz_config_data_t));
if (!bmz) return NULL;
memset(bmz, 0, sizeof(bmz_config_data_t));
bmz->hashfuncs[0] = CMPH_HASH_JENKINS;
bmz->hashfuncs[1] = CMPH_HASH_JENKINS;
bmz->g = NULL;
bmz->graph = NULL;
bmz->hashes = NULL;
return bmz;
}
void bmz_config_destroy(cmph_config_t *mph)
{
bmz_config_data_t *data = (bmz_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bmz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bmz_config_data_t *bmz = (bmz_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint32 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 2) break; //bmz only uses two hash functions
bmz->hashfuncs[i] = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bmz_new(cmph_config_t *mph, double c)
{
cmph_t *mphf = NULL;
bmz_data_t *bmzf = NULL;
cmph_uint32 i;
cmph_uint32 iterations;
cmph_uint32 iterations_map = 20;
cmph_uint8 *used_edges = NULL;
cmph_uint8 restart_mapping = 0;
cmph_uint8 * visited = NULL;
bmz_config_data_t *bmz = (bmz_config_data_t *)mph->data;
if (c == 0) c = 1.15; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bmz->m = mph->key_source->nkeys;
bmz->n = (cmph_uint32)ceil(c * mph->key_source->nkeys);
if (bmz->n < 5) // workaround for small key sets
{
bmz->n = 5;
}
DEBUGP("m (edges): %u n (vertices): %u c: %f\n", bmz->m, bmz->n, c);
bmz->graph = graph_new(bmz->n, bmz->m);
DEBUGP("Created graph\n");
bmz->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*3);
for(i = 0; i < 3; ++i) bmz->hashes[i] = NULL;
do
{
// Mapping step
cmph_uint32 biggest_g_value = 0;
cmph_uint32 biggest_edge_value = 1;
iterations = 100;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bmz->m, bmz->n);
}
while(1)
{
int ok;
DEBUGP("hash function 1\n");
bmz->hashes[0] = hash_state_new(bmz->hashfuncs[0], bmz->n);
DEBUGP("hash function 2\n");
bmz->hashes[1] = hash_state_new(bmz->hashfuncs[1], bmz->n);
DEBUGP("Generating edges\n");
ok = bmz_gen_edges(mph);
if (!ok)
{
--iterations;
hash_state_destroy(bmz->hashes[0]);
bmz->hashes[0] = NULL;
hash_state_destroy(bmz->hashes[1]);
bmz->hashes[1] = NULL;
DEBUGP("%u iterations remaining\n", iterations);
if (mph->verbosity)
{
fprintf(stderr, "simple graph creation failure - %u iterations remaining\n", iterations);
}
if (iterations == 0) break;
}
else break;
}
if (iterations == 0)
{
graph_destroy(bmz->graph);
return NULL;
}
// Ordering step
if (mph->verbosity)
{
fprintf(stderr, "Starting ordering step\n");
}
graph_obtain_critical_nodes(bmz->graph);
// Searching step
if (mph->verbosity)
{
fprintf(stderr, "Starting Searching step.\n");
fprintf(stderr, "\tTraversing critical vertices.\n");
}
DEBUGP("Searching step\n");
visited = (cmph_uint8 *)malloc((size_t)bmz->n/8 + 1);
memset(visited, 0, (size_t)bmz->n/8 + 1);
used_edges = (cmph_uint8 *)malloc((size_t)bmz->m/8 + 1);
memset(used_edges, 0, (size_t)bmz->m/8 + 1);
free(bmz->g);
bmz->g = (cmph_uint32 *)calloc((size_t)bmz->n, sizeof(cmph_uint32));
assert(bmz->g);
for (i = 0; i < bmz->n; ++i) // critical nodes
{
if (graph_node_is_critical(bmz->graph, i) && (!GETBIT(visited,i)))
{
if(c > 1.14) restart_mapping = bmz_traverse_critical_nodes(bmz, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
else restart_mapping = bmz_traverse_critical_nodes_heuristic(bmz, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
if(restart_mapping) break;
}
}
if(!restart_mapping)
{
if (mph->verbosity)
{
fprintf(stderr, "\tTraversing non critical vertices.\n");
}
bmz_traverse_non_critical_nodes(bmz, used_edges, visited); // non_critical_nodes
}
else
{
iterations_map--;
if (mph->verbosity) fprintf(stderr, "Restarting mapping step. %u iterations remaining.\n", iterations_map);
}
free(used_edges);
free(visited);
} while(restart_mapping && iterations_map > 0);
graph_destroy(bmz->graph);
bmz->graph = NULL;
if (iterations_map == 0)
{
return NULL;
}
#ifdef DEBUG
fprintf(stderr, "G: ");
for (i = 0; i < bmz->n; ++i) fprintf(stderr, "%u ", bmz->g[i]);
fprintf(stderr, "\n");
#endif
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bmzf = (bmz_data_t *)malloc(sizeof(bmz_data_t));
bmzf->g = bmz->g;
bmz->g = NULL; //transfer memory ownership
bmzf->hashes = bmz->hashes;
bmz->hashes = NULL; //transfer memory ownership
bmzf->n = bmz->n;
bmzf->m = bmz->m;
mphf->data = bmzf;
mphf->size = bmz->m;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
return mphf;
}
static cmph_uint8 bmz_traverse_critical_nodes(bmz_config_data_t *bmz, cmph_uint32 v, cmph_uint32 * biggest_g_value, cmph_uint32 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint32 next_g;
cmph_uint32 u; /* Auxiliary vertex */
cmph_uint32 lav; /* lookahead vertex */
cmph_uint8 collision;
vqueue_t * q = vqueue_new((cmph_uint32)(graph_ncritical_nodes(bmz->graph)) + 1);
graph_iterator_t it, it1;
DEBUGP("Labelling critical vertices\n");
bmz->g[v] = (cmph_uint32)ceil ((double)(*biggest_edge_value)/2) - 1;
SETBIT(visited, v);
next_g = (cmph_uint32)floor((double)(*biggest_edge_value/2)); /* next_g is incremented in the do..while statement*/
vqueue_insert(q, v);
while(!vqueue_is_empty(q))
{
v = vqueue_remove(q);
it = graph_neighbors_it(bmz->graph, v);
while ((u = graph_next_neighbor(bmz->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, u) && (!GETBIT(visited,u)))
{
collision = 1;
while(collision) // lookahead to resolve collisions
{
next_g = *biggest_g_value + 1;
it1 = graph_neighbors_it(bmz->graph, u);
collision = 0;
while((lav = graph_next_neighbor(bmz->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited,lav))
{
if(next_g + bmz->g[lav] >= bmz->m)
{
vqueue_destroy(q);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, (next_g + bmz->g[lav])))
{
collision = 1;
break;
}
}
}
if (next_g > *biggest_g_value) *biggest_g_value = next_g;
}
// Marking used edges...
it1 = graph_neighbors_it(bmz->graph, u);
while((lav = graph_next_neighbor(bmz->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,(next_g + bmz->g[lav]));
if(next_g + bmz->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz->g[lav];
}
}
bmz->g[u] = next_g; // Labelling vertex u.
SETBIT(visited,u);
vqueue_insert(q, u);
}
}
}
vqueue_destroy(q);
return 0;
}
static cmph_uint8 bmz_traverse_critical_nodes_heuristic(bmz_config_data_t *bmz, cmph_uint32 v, cmph_uint32 * biggest_g_value, cmph_uint32 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint32 next_g;
cmph_uint32 u; /* Auxiliary vertex */
cmph_uint32 lav; /* lookahead vertex */
cmph_uint8 collision;
cmph_uint32 * unused_g_values = NULL;
cmph_uint32 unused_g_values_capacity = 0;
cmph_uint32 nunused_g_values = 0;
vqueue_t * q = vqueue_new((cmph_uint32)(0.5*graph_ncritical_nodes(bmz->graph))+1);
graph_iterator_t it, it1;
DEBUGP("Labelling critical vertices\n");
bmz->g[v] = (cmph_uint32)ceil ((double)(*biggest_edge_value)/2) - 1;
SETBIT(visited, v);
next_g = (cmph_uint32)floor((double)(*biggest_edge_value/2)); /* next_g is incremented in the do..while statement*/
vqueue_insert(q, v);
while(!vqueue_is_empty(q))
{
v = vqueue_remove(q);
it = graph_neighbors_it(bmz->graph, v);
while ((u = graph_next_neighbor(bmz->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, u) && (!GETBIT(visited,u)))
{
cmph_uint32 next_g_index = 0;
collision = 1;
while(collision) // lookahead to resolve collisions
{
if (next_g_index < nunused_g_values)
{
next_g = unused_g_values[next_g_index++];
}
else
{
next_g = *biggest_g_value + 1;
next_g_index = UINT_MAX;
}
it1 = graph_neighbors_it(bmz->graph, u);
collision = 0;
while((lav = graph_next_neighbor(bmz->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited,lav))
{
if(next_g + bmz->g[lav] >= bmz->m)
{
vqueue_destroy(q);
free(unused_g_values);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, (next_g + bmz->g[lav])))
{
collision = 1;
break;
}
}
}
if(collision && (next_g > *biggest_g_value)) // saving the current g value stored in next_g.
{
if(nunused_g_values == unused_g_values_capacity)
{
unused_g_values = (cmph_uint32 *)realloc(unused_g_values, (unused_g_values_capacity + BUFSIZ)*sizeof(cmph_uint32));
unused_g_values_capacity += BUFSIZ;
}
unused_g_values[nunused_g_values++] = next_g;
}
if (next_g > *biggest_g_value) *biggest_g_value = next_g;
}
next_g_index--;
if (next_g_index < nunused_g_values) unused_g_values[next_g_index] = unused_g_values[--nunused_g_values];
// Marking used edges...
it1 = graph_neighbors_it(bmz->graph, u);
while((lav = graph_next_neighbor(bmz->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,(next_g + bmz->g[lav]));
if(next_g + bmz->g[lav] > *biggest_edge_value) *biggest_edge_value = next_g + bmz->g[lav];
}
}
bmz->g[u] = next_g; // Labelling vertex u.
SETBIT(visited, u);
vqueue_insert(q, u);
}
}
}
vqueue_destroy(q);
free(unused_g_values);
return 0;
}
static cmph_uint32 next_unused_edge(bmz_config_data_t *bmz, cmph_uint8 * used_edges, cmph_uint32 unused_edge_index)
{
while(1)
{
assert(unused_edge_index < bmz->m);
if(GETBIT(used_edges, unused_edge_index)) unused_edge_index ++;
else break;
}
return unused_edge_index;
}
static void bmz_traverse(bmz_config_data_t *bmz, cmph_uint8 * used_edges, cmph_uint32 v, cmph_uint32 * unused_edge_index, cmph_uint8 * visited)
{
graph_iterator_t it = graph_neighbors_it(bmz->graph, v);
cmph_uint32 neighbor = 0;
while((neighbor = graph_next_neighbor(bmz->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if(GETBIT(visited,neighbor)) continue;
//DEBUGP("Visiting neighbor %u\n", neighbor);
*unused_edge_index = next_unused_edge(bmz, used_edges, *unused_edge_index);
bmz->g[neighbor] = *unused_edge_index - bmz->g[v];
//if (bmz->g[neighbor] >= bmz->m) bmz->g[neighbor] += bmz->m;
SETBIT(visited, neighbor);
(*unused_edge_index)++;
bmz_traverse(bmz, used_edges, neighbor, unused_edge_index, visited);
}
}
static void bmz_traverse_non_critical_nodes(bmz_config_data_t *bmz, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint32 i, v1, v2, unused_edge_index = 0;
DEBUGP("Labelling non critical vertices\n");
for(i = 0; i < bmz->m; i++)
{
v1 = graph_vertex_id(bmz->graph, i, 0);
v2 = graph_vertex_id(bmz->graph, i, 1);
if((GETBIT(visited,v1) && GETBIT(visited,v2)) || (!GETBIT(visited,v1) && !GETBIT(visited,v2))) continue;
if(GETBIT(visited,v1)) bmz_traverse(bmz, used_edges, v1, &unused_edge_index, visited);
else bmz_traverse(bmz, used_edges, v2, &unused_edge_index, visited);
}
for(i = 0; i < bmz->n; i++)
{
if(!GETBIT(visited,i))
{
bmz->g[i] = 0;
SETBIT(visited, i);
bmz_traverse(bmz, used_edges, i, &unused_edge_index, visited);
}
}
}
static int bmz_gen_edges(cmph_config_t *mph)
{
cmph_uint32 e;
bmz_config_data_t *bmz = (bmz_config_data_t *)mph->data;
cmph_uint8 multiple_edges = 0;
DEBUGP("Generating edges for %u vertices\n", bmz->n);
graph_clear_edges(bmz->graph);
mph->key_source->rewind(mph->key_source->data);
for (e = 0; e < mph->key_source->nkeys; ++e)
{
cmph_uint32 h1, h2;
cmph_uint32 keylen;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
h1 = hash(bmz->hashes[0], key, keylen) % bmz->n;
h2 = hash(bmz->hashes[1], key, keylen) % bmz->n;
if (h1 == h2) if (++h2 >= bmz->n) h2 = 0;
DEBUGP("key: %.*s h1: %u h2: %u\n", keylen, key, h1, h2);
if (h1 == h2)
{
if (mph->verbosity) fprintf(stderr, "Self loop for key %u\n", e);
mph->key_source->dispose(mph->key_source->data, key, keylen);
return 0;
}
DEBUGP("Adding edge: %u -> %u for key %.*s\n", h1, h2, keylen, key);
mph->key_source->dispose(mph->key_source->data, key, keylen);
multiple_edges = graph_contains_edge(bmz->graph, h1, h2);
if (mph->verbosity && multiple_edges) fprintf(stderr, "A non simple graph was generated\n");
if (multiple_edges) return 0; // checking multiple edge restriction.
graph_add_edge(bmz->graph, h1, h2);
}
return !multiple_edges;
}
int bmz_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 two = 2; //number of hash functions
bmz_data_t *data = (bmz_data_t *)mphf->data;
register size_t nbytes;
__cmph_dump(mphf, fd);
nbytes = fwrite(&two, sizeof(cmph_uint32), (size_t)1, fd);
hash_state_dump(data->hashes[0], &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
hash_state_dump(data->hashes[1], &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
nbytes = fwrite(&(data->n), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(&(data->m), sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(data->g, sizeof(cmph_uint32)*(data->n), (size_t)1, fd);
#ifdef DEBUG
cmph_uint32 i;
fprintf(stderr, "G: ");
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", data->g[i]);
fprintf(stderr, "\n");
#endif
return 1;
}
void bmz_load(FILE *f, cmph_t *mphf)
{
cmph_uint32 nhashes;
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint32 i;
bmz_data_t *bmz = (bmz_data_t *)malloc(sizeof(bmz_data_t));
register size_t nbytes;
DEBUGP("Loading bmz mphf\n");
mphf->data = bmz;
nbytes = fread(&nhashes, sizeof(cmph_uint32), (size_t)1, f);
bmz->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*(nhashes + 1));
bmz->hashes[nhashes] = NULL;
DEBUGP("Reading %u hashes\n", nhashes);
for (i = 0; i < nhashes; ++i)
{
hash_state_t *state = NULL;
nbytes = fread(&buflen, sizeof(cmph_uint32), (size_t)1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc((size_t)buflen);
nbytes = fread(buf, (size_t)buflen, (size_t)1, f);
state = hash_state_load(buf, buflen);
bmz->hashes[i] = state;
free(buf);
}
DEBUGP("Reading m and n\n");
nbytes = fread(&(bmz->n), sizeof(cmph_uint32), (size_t)1, f);
nbytes = fread(&(bmz->m), sizeof(cmph_uint32), (size_t)1, f);
bmz->g = (cmph_uint32 *)malloc(sizeof(cmph_uint32)*bmz->n);
nbytes = fread(bmz->g, bmz->n*sizeof(cmph_uint32), (size_t)1, f);
#ifdef DEBUG
fprintf(stderr, "G: ");
for (i = 0; i < bmz->n; ++i) fprintf(stderr, "%u ", bmz->g[i]);
fprintf(stderr, "\n");
#endif
return;
}
cmph_uint32 bmz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
bmz_data_t *bmz = (bmz_data_t *)mphf->data;
cmph_uint32 h1 = hash(bmz->hashes[0], key, keylen) % bmz->n;
cmph_uint32 h2 = hash(bmz->hashes[1], key, keylen) % bmz->n;
DEBUGP("key: %.*s h1: %u h2: %u\n", keylen, key, h1, h2);
if (h1 == h2 && ++h2 >= bmz->n) h2 = 0;
DEBUGP("key: %.*s g[h1]: %u g[h2]: %u edges: %u\n", keylen, key, bmz->g[h1], bmz->g[h2], bmz->m);
return bmz->g[h1] + bmz->g[h2];
}
void bmz_destroy(cmph_t *mphf)
{
bmz_data_t *data = (bmz_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hashes[0]);
hash_state_destroy(data->hashes[1]);
free(data->hashes);
free(data);
free(mphf);
}
/** \fn void bmz_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bmz_pack(cmph_t *mphf, void *packed_mphf)
{
bmz_data_t *data = (bmz_data_t *)mphf->data;
cmph_uint8 * ptr = (cmph_uint8 *)packed_mphf;
// packing h1 type
CMPH_HASH h1_type = hash_get_type(data->hashes[0]);
*((cmph_uint32 *) ptr) = h1_type;
ptr += sizeof(cmph_uint32);
// packing h1
hash_state_pack(data->hashes[0], ptr);
ptr += hash_state_packed_size(h1_type);
// packing h2 type
CMPH_HASH h2_type = hash_get_type(data->hashes[1]);
*((cmph_uint32 *) ptr) = h2_type;
ptr += sizeof(cmph_uint32);
// packing h2
hash_state_pack(data->hashes[1], ptr);
ptr += hash_state_packed_size(h2_type);
// packing n
*((cmph_uint32 *) ptr) = data->n;
ptr += sizeof(data->n);
// packing g
memcpy(ptr, data->g, sizeof(cmph_uint32)*data->n);
}
/** \fn cmph_uint32 bmz_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bmz_packed_size(cmph_t *mphf)
{
bmz_data_t *data = (bmz_data_t *)mphf->data;
CMPH_HASH h1_type = hash_get_type(data->hashes[0]);
CMPH_HASH h2_type = hash_get_type(data->hashes[1]);
return (cmph_uint32)(sizeof(CMPH_ALGO) + hash_state_packed_size(h1_type) + hash_state_packed_size(h2_type) +
3*sizeof(cmph_uint32) + sizeof(cmph_uint32)*data->n);
}
/** cmph_uint32 bmz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bmz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
register cmph_uint8 *h1_ptr = (cmph_uint8 *)packed_mphf;
register CMPH_HASH h1_type = (CMPH_HASH)(*((cmph_uint32 *)h1_ptr));
h1_ptr += 4;
register cmph_uint8 *h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
register CMPH_HASH h2_type = (CMPH_HASH)(*((cmph_uint32 *)h2_ptr));
h2_ptr += 4;
register cmph_uint32 *g_ptr = (cmph_uint32 *)(h2_ptr + hash_state_packed_size(h2_type));
register cmph_uint32 n = *g_ptr++;
register cmph_uint32 h1 = hash_packed(h1_ptr, h1_type, key, keylen) % n;
register cmph_uint32 h2 = hash_packed(h2_ptr, h2_type, key, keylen) % n;
if (h1 == h2 && ++h2 >= n) h2 = 0;
return (g_ptr[h1] + g_ptr[h2]);
}

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#ifndef __CMPH_BMZ_H__
#define __CMPH_BMZ_H__
#include "cmph.h"
typedef struct __bmz_data_t bmz_data_t;
typedef struct __bmz_config_data_t bmz_config_data_t;
bmz_config_data_t *bmz_config_new(void);
void bmz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void bmz_config_destroy(cmph_config_t *mph);
cmph_t *bmz_new(cmph_config_t *mph, double c);
void bmz_load(FILE *f, cmph_t *mphf);
int bmz_dump(cmph_t *mphf, FILE *f);
void bmz_destroy(cmph_t *mphf);
cmph_uint32 bmz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
/** \fn void bmz_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bmz_pack(cmph_t *mphf, void *packed_mphf);
/** \fn cmph_uint32 bmz_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bmz_packed_size(cmph_t *mphf);
/** cmph_uint32 bmz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 bmz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
#endif

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#include "graph.h"
#include "bmz8.h"
#include "cmph_structs.h"
#include "bmz8_structs.h"
#include "hash.h"
#include "vqueue.h"
#include "bitbool.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <string.h>
//#define DEBUG
#include "debug.h"
static int bmz8_gen_edges(cmph_config_t *mph);
static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint32 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz8, cmph_uint32 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited);
static void bmz8_traverse_non_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 * visited);
bmz8_config_data_t *bmz8_config_new(void)
{
bmz8_config_data_t *bmz8;
bmz8 = (bmz8_config_data_t *)malloc(sizeof(bmz8_config_data_t));
if (!bmz8) return NULL;
memset(bmz8, 0, sizeof(bmz8_config_data_t));
bmz8->hashfuncs[0] = CMPH_HASH_JENKINS;
bmz8->hashfuncs[1] = CMPH_HASH_JENKINS;
bmz8->g = NULL;
bmz8->graph = NULL;
bmz8->hashes = NULL;
return bmz8;
}
void bmz8_config_destroy(cmph_config_t *mph)
{
bmz8_config_data_t *data = (bmz8_config_data_t *)mph->data;
DEBUGP("Destroying algorithm dependent data\n");
free(data);
}
void bmz8_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs)
{
bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
CMPH_HASH *hashptr = hashfuncs;
cmph_uint8 i = 0;
while(*hashptr != CMPH_HASH_COUNT)
{
if (i >= 2) break; //bmz8 only uses two hash functions
bmz8->hashfuncs[i] = *hashptr;
++i, ++hashptr;
}
}
cmph_t *bmz8_new(cmph_config_t *mph, double c)
{
cmph_t *mphf = NULL;
bmz8_data_t *bmz8f = NULL;
cmph_uint8 i;
cmph_uint8 iterations;
cmph_uint8 iterations_map = 20;
cmph_uint8 *used_edges = NULL;
cmph_uint8 restart_mapping = 0;
cmph_uint8 * visited = NULL;
bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
if (mph->key_source->nkeys >= 256)
{
if (mph->verbosity) fprintf(stderr, "The number of keys in BMZ8 must be lower than 256.\n");
return NULL;
}
if (c == 0) c = 1.15; // validating restrictions over parameter c.
DEBUGP("c: %f\n", c);
bmz8->m = (cmph_uint8) mph->key_source->nkeys;
bmz8->n = (cmph_uint8) ceil(c * mph->key_source->nkeys);
if (bmz8->n < 5) // workaround for small key sets
{
bmz8->n = 5;
}
DEBUGP("m (edges): %u n (vertices): %u c: %f\n", bmz8->m, bmz8->n, c);
bmz8->graph = graph_new(bmz8->n, bmz8->m);
DEBUGP("Created graph\n");
bmz8->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*3);
for(i = 0; i < 3; ++i) bmz8->hashes[i] = NULL;
do
{
// Mapping step
cmph_uint8 biggest_g_value = 0;
cmph_uint8 biggest_edge_value = 1;
iterations = 100;
if (mph->verbosity)
{
fprintf(stderr, "Entering mapping step for mph creation of %u keys with graph sized %u\n", bmz8->m, bmz8->n);
}
while(1)
{
int ok;
DEBUGP("hash function 1\n");
bmz8->hashes[0] = hash_state_new(bmz8->hashfuncs[0], bmz8->n);
DEBUGP("hash function 2\n");
bmz8->hashes[1] = hash_state_new(bmz8->hashfuncs[1], bmz8->n);
DEBUGP("Generating edges\n");
ok = bmz8_gen_edges(mph);
if (!ok)
{
--iterations;
hash_state_destroy(bmz8->hashes[0]);
bmz8->hashes[0] = NULL;
hash_state_destroy(bmz8->hashes[1]);
bmz8->hashes[1] = NULL;
DEBUGP("%u iterations remaining\n", iterations);
if (mph->verbosity)
{
fprintf(stderr, "simple graph creation failure - %u iterations remaining\n", iterations);
}
if (iterations == 0) break;
}
else break;
}
if (iterations == 0)
{
graph_destroy(bmz8->graph);
return NULL;
}
// Ordering step
if (mph->verbosity)
{
fprintf(stderr, "Starting ordering step\n");
}
graph_obtain_critical_nodes(bmz8->graph);
// Searching step
if (mph->verbosity)
{
fprintf(stderr, "Starting Searching step.\n");
fprintf(stderr, "\tTraversing critical vertices.\n");
}
DEBUGP("Searching step\n");
visited = (cmph_uint8 *)malloc((size_t)bmz8->n/8 + 1);
memset(visited, 0, (size_t)bmz8->n/8 + 1);
used_edges = (cmph_uint8 *)malloc((size_t)bmz8->m/8 + 1);
memset(used_edges, 0, (size_t)bmz8->m/8 + 1);
free(bmz8->g);
bmz8->g = (cmph_uint8 *)calloc((size_t)bmz8->n, sizeof(cmph_uint8));
assert(bmz8->g);
for (i = 0; i < bmz8->n; ++i) // critical nodes
{
if (graph_node_is_critical(bmz8->graph, i) && (!GETBIT(visited,i)))
{
if(c > 1.14) restart_mapping = bmz8_traverse_critical_nodes(bmz8, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
else restart_mapping = bmz8_traverse_critical_nodes_heuristic(bmz8, i, &biggest_g_value, &biggest_edge_value, used_edges, visited);
if(restart_mapping) break;
}
}
if(!restart_mapping)
{
if (mph->verbosity)
{
fprintf(stderr, "\tTraversing non critical vertices.\n");
}
bmz8_traverse_non_critical_nodes(bmz8, used_edges, visited); // non_critical_nodes
}
else
{
iterations_map--;
if (mph->verbosity) fprintf(stderr, "Restarting mapping step. %u iterations remaining.\n", iterations_map);
}
free(used_edges);
free(visited);
}while(restart_mapping && iterations_map > 0);
graph_destroy(bmz8->graph);
bmz8->graph = NULL;
if (iterations_map == 0)
{
return NULL;
}
mphf = (cmph_t *)malloc(sizeof(cmph_t));
mphf->algo = mph->algo;
bmz8f = (bmz8_data_t *)malloc(sizeof(bmz8_data_t));
bmz8f->g = bmz8->g;
bmz8->g = NULL; //transfer memory ownership
bmz8f->hashes = bmz8->hashes;
bmz8->hashes = NULL; //transfer memory ownership
bmz8f->n = bmz8->n;
bmz8f->m = bmz8->m;
mphf->data = bmz8f;
mphf->size = bmz8->m;
DEBUGP("Successfully generated minimal perfect hash\n");
if (mph->verbosity)
{
fprintf(stderr, "Successfully generated minimal perfect hash function\n");
}
return mphf;
}
static cmph_uint8 bmz8_traverse_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint32 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint8 next_g;
cmph_uint32 u; /* Auxiliary vertex */
cmph_uint32 lav; /* lookahead vertex */
cmph_uint8 collision;
vqueue_t * q = vqueue_new((cmph_uint32)(graph_ncritical_nodes(bmz8->graph)));
graph_iterator_t it, it1;
DEBUGP("Labelling critical vertices\n");
bmz8->g[v] = (cmph_uint8)(ceil ((double)(*biggest_edge_value)/2) - 1);
SETBIT(visited, v);
next_g = (cmph_uint8)floor((double)(*biggest_edge_value/2)); /* next_g is incremented in the do..while statement*/
vqueue_insert(q, v);
while(!vqueue_is_empty(q))
{
v = vqueue_remove(q);
it = graph_neighbors_it(bmz8->graph, v);
while ((u = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, u) && (!GETBIT(visited,u)))
{
collision = 1;
while(collision) // lookahead to resolve collisions
{
next_g = (cmph_uint8)(*biggest_g_value + 1);
it1 = graph_neighbors_it(bmz8->graph, u);
collision = 0;
while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited,lav))
{
if(next_g + bmz8->g[lav] >= bmz8->m)
{
vqueue_destroy(q);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, (next_g + bmz8->g[lav])))
{
collision = 1;
break;
}
}
}
if (next_g > *biggest_g_value) *biggest_g_value = next_g;
}
// Marking used edges...
it1 = graph_neighbors_it(bmz8->graph, u);
while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,(next_g + bmz8->g[lav]));
if(next_g + bmz8->g[lav] > *biggest_edge_value)
*biggest_edge_value = (cmph_uint8)(next_g + bmz8->g[lav]);
}
}
bmz8->g[u] = next_g; // Labelling vertex u.
SETBIT(visited,u);
vqueue_insert(q, u);
}
}
}
vqueue_destroy(q);
return 0;
}
static cmph_uint8 bmz8_traverse_critical_nodes_heuristic(bmz8_config_data_t *bmz8, cmph_uint32 v, cmph_uint8 * biggest_g_value, cmph_uint8 * biggest_edge_value, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint8 next_g;
cmph_uint32 u;
cmph_uint32 lav;
cmph_uint8 collision;
cmph_uint8 * unused_g_values = NULL;
cmph_uint8 unused_g_values_capacity = 0;
cmph_uint8 nunused_g_values = 0;
vqueue_t * q = vqueue_new((cmph_uint32)(graph_ncritical_nodes(bmz8->graph)));
graph_iterator_t it, it1;
DEBUGP("Labelling critical vertices\n");
bmz8->g[v] = (cmph_uint8)(ceil ((double)(*biggest_edge_value)/2) - 1);
SETBIT(visited, v);
next_g = (cmph_uint8)floor((double)(*biggest_edge_value/2));
vqueue_insert(q, v);
while(!vqueue_is_empty(q))
{
v = vqueue_remove(q);
it = graph_neighbors_it(bmz8->graph, v);
while ((u = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, u) && (!GETBIT(visited,u)))
{
cmph_uint8 next_g_index = 0;
collision = 1;
while(collision) // lookahead to resolve collisions
{
if (next_g_index < nunused_g_values)
{
next_g = unused_g_values[next_g_index++];
}
else
{
next_g = (cmph_uint8)(*biggest_g_value + 1);
next_g_index = 255;//UINT_MAX;
}
it1 = graph_neighbors_it(bmz8->graph, u);
collision = 0;
while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited,lav))
{
if(next_g + bmz8->g[lav] >= bmz8->m)
{
vqueue_destroy(q);
free(unused_g_values);
return 1; // restart mapping step.
}
if (GETBIT(used_edges, (next_g + bmz8->g[lav])))
{
collision = 1;
break;
}
}
}
if(collision && (next_g > *biggest_g_value)) // saving the current g value stored in next_g.
{
if(nunused_g_values == unused_g_values_capacity)
{
unused_g_values = (cmph_uint8*)realloc(unused_g_values, ((size_t)(unused_g_values_capacity + BUFSIZ))*sizeof(cmph_uint8));
unused_g_values_capacity += (cmph_uint8)BUFSIZ;
}
unused_g_values[nunused_g_values++] = next_g;
}
if (next_g > *biggest_g_value) *biggest_g_value = next_g;
}
next_g_index--;
if (next_g_index < nunused_g_values) unused_g_values[next_g_index] = unused_g_values[--nunused_g_values];
// Marking used edges...
it1 = graph_neighbors_it(bmz8->graph, u);
while((lav = graph_next_neighbor(bmz8->graph, &it1)) != GRAPH_NO_NEIGHBOR)
{
if (graph_node_is_critical(bmz8->graph, lav) && GETBIT(visited, lav))
{
SETBIT(used_edges,(next_g + bmz8->g[lav]));
if(next_g + bmz8->g[lav] > *biggest_edge_value)
*biggest_edge_value = (cmph_uint8)(next_g + bmz8->g[lav]);
}
}
bmz8->g[u] = next_g; // Labelling vertex u.
SETBIT(visited, u);
vqueue_insert(q, u);
}
}
}
vqueue_destroy(q);
free(unused_g_values);
return 0;
}
static cmph_uint8 next_unused_edge(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint32 unused_edge_index)
{
while(1)
{
assert(unused_edge_index < bmz8->m);
if(GETBIT(used_edges, unused_edge_index)) unused_edge_index ++;
else break;
}
return (cmph_uint8)unused_edge_index;
}
static void bmz8_traverse(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint32 v, cmph_uint8 * unused_edge_index, cmph_uint8 * visited)
{
graph_iterator_t it = graph_neighbors_it(bmz8->graph, v);
cmph_uint32 neighbor = 0;
while((neighbor = graph_next_neighbor(bmz8->graph, &it)) != GRAPH_NO_NEIGHBOR)
{
if(GETBIT(visited,neighbor)) continue;
//DEBUGP("Visiting neighbor %u\n", neighbor);
*unused_edge_index = next_unused_edge(bmz8, used_edges, *unused_edge_index);
bmz8->g[neighbor] = (cmph_uint8)(*unused_edge_index - bmz8->g[v]);
//if (bmz8->g[neighbor] >= bmz8->m) bmz8->g[neighbor] += bmz8->m;
SETBIT(visited, neighbor);
(*unused_edge_index)++;
bmz8_traverse(bmz8, used_edges, neighbor, unused_edge_index, visited);
}
}
static void bmz8_traverse_non_critical_nodes(bmz8_config_data_t *bmz8, cmph_uint8 * used_edges, cmph_uint8 * visited)
{
cmph_uint8 i, v1, v2, unused_edge_index = 0;
DEBUGP("Labelling non critical vertices\n");
for(i = 0; i < bmz8->m; i++)
{
v1 = (cmph_uint8)graph_vertex_id(bmz8->graph, i, 0);
v2 = (cmph_uint8)graph_vertex_id(bmz8->graph, i, 1);
if((GETBIT(visited,v1) && GETBIT(visited,v2)) || (!GETBIT(visited,v1) && !GETBIT(visited,v2))) continue;
if(GETBIT(visited,v1)) bmz8_traverse(bmz8, used_edges, v1, &unused_edge_index, visited);
else bmz8_traverse(bmz8, used_edges, v2, &unused_edge_index, visited);
}
for(i = 0; i < bmz8->n; i++)
{
if(!GETBIT(visited,i))
{
bmz8->g[i] = 0;
SETBIT(visited, i);
bmz8_traverse(bmz8, used_edges, i, &unused_edge_index, visited);
}
}
}
static int bmz8_gen_edges(cmph_config_t *mph)
{
cmph_uint8 e;
bmz8_config_data_t *bmz8 = (bmz8_config_data_t *)mph->data;
cmph_uint8 multiple_edges = 0;
DEBUGP("Generating edges for %u vertices\n", bmz8->n);
graph_clear_edges(bmz8->graph);
mph->key_source->rewind(mph->key_source->data);
for (e = 0; e < mph->key_source->nkeys; ++e)
{
cmph_uint8 h1, h2;
cmph_uint32 keylen;
char *key = NULL;
mph->key_source->read(mph->key_source->data, &key, &keylen);
// if (key == NULL)fprintf(stderr, "key = %s -- read BMZ\n", key);
h1 = (cmph_uint8)(hash(bmz8->hashes[0], key, keylen) % bmz8->n);
h2 = (cmph_uint8)(hash(bmz8->hashes[1], key, keylen) % bmz8->n);
if (h1 == h2) if (++h2 >= bmz8->n) h2 = 0;
if (h1 == h2)
{
if (mph->verbosity) fprintf(stderr, "Self loop for key %u\n", e);
mph->key_source->dispose(mph->key_source->data, key, keylen);
return 0;
}
//DEBUGP("Adding edge: %u -> %u for key %s\n", h1, h2, key);
mph->key_source->dispose(mph->key_source->data, key, keylen);
// fprintf(stderr, "key = %s -- dispose BMZ\n", key);
multiple_edges = graph_contains_edge(bmz8->graph, h1, h2);
if (mph->verbosity && multiple_edges) fprintf(stderr, "A non simple graph was generated\n");
if (multiple_edges) return 0; // checking multiple edge restriction.
graph_add_edge(bmz8->graph, h1, h2);
}
return !multiple_edges;
}
int bmz8_dump(cmph_t *mphf, FILE *fd)
{
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint8 two = 2; //number of hash functions
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
register size_t nbytes;
__cmph_dump(mphf, fd);
nbytes = fwrite(&two, sizeof(cmph_uint8), (size_t)1, fd);
hash_state_dump(data->hashes[0], &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
hash_state_dump(data->hashes[1], &buf, &buflen);
DEBUGP("Dumping hash state with %u bytes to disk\n", buflen);
nbytes = fwrite(&buflen, sizeof(cmph_uint32), (size_t)1, fd);
nbytes = fwrite(buf, (size_t)buflen, (size_t)1, fd);
free(buf);
nbytes = fwrite(&(data->n), sizeof(cmph_uint8), (size_t)1, fd);
nbytes = fwrite(&(data->m), sizeof(cmph_uint8), (size_t)1, fd);
nbytes = fwrite(data->g, sizeof(cmph_uint8)*(data->n), (size_t)1, fd);
/* #ifdef DEBUG
fprintf(stderr, "G: ");
for (i = 0; i < data->n; ++i) fprintf(stderr, "%u ", data->g[i]);
fprintf(stderr, "\n");
#endif*/
return 1;
}
void bmz8_load(FILE *f, cmph_t *mphf)
{
cmph_uint8 nhashes;
char *buf = NULL;
cmph_uint32 buflen;
cmph_uint8 i;
register size_t nbytes;
bmz8_data_t *bmz8 = (bmz8_data_t *)malloc(sizeof(bmz8_data_t));
DEBUGP("Loading bmz8 mphf\n");
mphf->data = bmz8;
nbytes = fread(&nhashes, sizeof(cmph_uint8), (size_t)1, f);
bmz8->hashes = (hash_state_t **)malloc(sizeof(hash_state_t *)*(size_t)(nhashes + 1));
bmz8->hashes[nhashes] = NULL;
DEBUGP("Reading %u hashes\n", nhashes);
for (i = 0; i < nhashes; ++i)
{
hash_state_t *state = NULL;
nbytes = fread(&buflen, sizeof(cmph_uint32), (size_t)1, f);
DEBUGP("Hash state has %u bytes\n", buflen);
buf = (char *)malloc((size_t)buflen);
nbytes = fread(buf, (size_t)buflen, (size_t)1, f);
state = hash_state_load(buf, buflen);
bmz8->hashes[i] = state;
free(buf);
}
DEBUGP("Reading m and n\n");
nbytes = fread(&(bmz8->n), sizeof(cmph_uint8), (size_t)1, f);
nbytes = fread(&(bmz8->m), sizeof(cmph_uint8), (size_t)1, f);
bmz8->g = (cmph_uint8 *)malloc(sizeof(cmph_uint8)*bmz8->n);
nbytes = fread(bmz8->g, bmz8->n*sizeof(cmph_uint8), (size_t)1, f);
#ifdef DEBUG
fprintf(stderr, "G: ");
for (i = 0; i < bmz8->n; ++i) fprintf(stderr, "%u ", bmz8->g[i]);
fprintf(stderr, "\n");
#endif
return;
}
cmph_uint8 bmz8_search(cmph_t *mphf, const char *key, cmph_uint32 keylen)
{
bmz8_data_t *bmz8 = (bmz8_data_t *)mphf->data;
cmph_uint8 h1 = (cmph_uint8)(hash(bmz8->hashes[0], key, keylen) % bmz8->n);
cmph_uint8 h2 = (cmph_uint8)(hash(bmz8->hashes[1], key, keylen) % bmz8->n);
DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
if (h1 == h2 && ++h2 > bmz8->n) h2 = 0;
DEBUGP("key: %s g[h1]: %u g[h2]: %u edges: %u\n", key, bmz8->g[h1], bmz8->g[h2], bmz8->m);
return (cmph_uint8)(bmz8->g[h1] + bmz8->g[h2]);
}
void bmz8_destroy(cmph_t *mphf)
{
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
free(data->g);
hash_state_destroy(data->hashes[0]);
hash_state_destroy(data->hashes[1]);
free(data->hashes);
free(data);
free(mphf);
}
/** \fn void bmz8_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bmz8_pack(cmph_t *mphf, void *packed_mphf)
{
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
cmph_uint8 * ptr = (cmph_uint8 *)packed_mphf;
// packing h1 type
CMPH_HASH h1_type = hash_get_type(data->hashes[0]);
*((cmph_uint32 *) ptr) = h1_type;
ptr += sizeof(cmph_uint32);
// packing h1
hash_state_pack(data->hashes[0], ptr);
ptr += hash_state_packed_size(h1_type);
// packing h2 type
CMPH_HASH h2_type = hash_get_type(data->hashes[1]);
*((cmph_uint32 *) ptr) = h2_type;
ptr += sizeof(cmph_uint32);
// packing h2
hash_state_pack(data->hashes[1], ptr);
ptr += hash_state_packed_size(h2_type);
// packing n
*ptr++ = data->n;
// packing g
memcpy(ptr, data->g, sizeof(cmph_uint8)*data->n);
}
/** \fn cmph_uint32 bmz8_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bmz8_packed_size(cmph_t *mphf)
{
bmz8_data_t *data = (bmz8_data_t *)mphf->data;
CMPH_HASH h1_type = hash_get_type(data->hashes[0]);
CMPH_HASH h2_type = hash_get_type(data->hashes[1]);
return (cmph_uint32)(sizeof(CMPH_ALGO) + hash_state_packed_size(h1_type) + hash_state_packed_size(h2_type) +
2*sizeof(cmph_uint32) + sizeof(cmph_uint8) + sizeof(cmph_uint8)*data->n);
}
/** cmph_uint8 bmz8_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint8 bmz8_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
register cmph_uint8 *h1_ptr = (cmph_uint8 *)packed_mphf;
register CMPH_HASH h1_type = (CMPH_HASH)(*((cmph_uint32 *)h1_ptr));
h1_ptr += 4;
register cmph_uint8 *h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
register CMPH_HASH h2_type = (CMPH_HASH)(*((cmph_uint32 *)h2_ptr));
h2_ptr += 4;
register cmph_uint8 *g_ptr = h2_ptr + hash_state_packed_size(h2_type);
register cmph_uint8 n = *g_ptr++;
register cmph_uint8 h1 = (cmph_uint8)(hash_packed(h1_ptr, h1_type, key, keylen) % n);
register cmph_uint8 h2 = (cmph_uint8)(hash_packed(h2_ptr, h2_type, key, keylen) % n);
DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
if (h1 == h2 && ++h2 > n) h2 = 0;
return (cmph_uint8)(g_ptr[h1] + g_ptr[h2]);
}

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#ifndef __CMPH_BMZ8_H__
#define __CMPH_BMZ8_H__
#include "cmph.h"
typedef struct __bmz8_data_t bmz8_data_t;
typedef struct __bmz8_config_data_t bmz8_config_data_t;
bmz8_config_data_t *bmz8_config_new(void);
void bmz8_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void bmz8_config_destroy(cmph_config_t *mph);
cmph_t *bmz8_new(cmph_config_t *mph, double c);
void bmz8_load(FILE *f, cmph_t *mphf);
int bmz8_dump(cmph_t *mphf, FILE *f);
void bmz8_destroy(cmph_t *mphf);
cmph_uint8 bmz8_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
/** \fn void bmz8_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void bmz8_pack(cmph_t *mphf, void *packed_mphf);
/** \fn cmph_uint32 bmz8_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 bmz8_packed_size(cmph_t *mphf);
/** cmph_uint8 bmz8_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint8 bmz8_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
#endif

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cmph-2.0.2/src/bmz8_structs.h Normal file
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#ifndef __CMPH_BMZ8_STRUCTS_H__
#define __CMPH_BMZ8_STRUCTS_H__
#include "hash_state.h"
struct __bmz8_data_t
{
cmph_uint8 m; //edges (words) count
cmph_uint8 n; //vertex count
cmph_uint8 *g;
hash_state_t **hashes;
};
struct __bmz8_config_data_t
{
CMPH_HASH hashfuncs[2];
cmph_uint8 m; //edges (words) count
cmph_uint8 n; //vertex count
graph_t *graph;
cmph_uint8 *g;
hash_state_t **hashes;
};
#endif

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cmph-2.0.2/src/bmz_structs.h Normal file
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#ifndef __CMPH_BMZ_STRUCTS_H__
#define __CMPH_BMZ_STRUCTS_H__
#include "hash_state.h"
struct __bmz_data_t
{
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
cmph_uint32 *g;
hash_state_t **hashes;
};
struct __bmz_config_data_t
{
CMPH_HASH hashfuncs[2];
cmph_uint32 m; //edges (words) count
cmph_uint32 n; //vertex count
graph_t *graph;
cmph_uint32 *g;
hash_state_t **hashes;
};
#endif

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cmph-2.0.2/src/brz.c Executable file
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#ifndef __CMPH_BRZ_H__
#define __CMPH_BRZ_H__
#include "cmph.h"
/*
* The BRZ algorithm has been built so to consume the bare minimum
* amount of memory to generate the MPHFs. Thereby we decided
* to dump the resulting MPHFs to disk while creating them. Thus,
* to use the BRZ algorithm, one has to call brz_config_set_mphf_fd
* before calling brz_new. Otherwise we will fail the MPHF creation.
* One side effect of this design decision is that the resulting
* MPHF cannot be used until its dumping process is finalized
* by calling brz_dump and the caller must use brz_load before
* any call to either one of the following functions is made:
* brz_search
* brz_pack
* brz_packed_size
* brz_search_packed
*/
typedef struct __brz_data_t brz_data_t;
typedef struct __brz_config_data_t brz_config_data_t;
brz_config_data_t *brz_config_new(void);
void brz_config_set_hashfuncs(cmph_config_t *mph, CMPH_HASH *hashfuncs);
void brz_config_set_tmp_dir(cmph_config_t *mph, cmph_uint8 *tmp_dir);
void brz_config_set_mphf_fd(cmph_config_t *mph, FILE *mphf_fd);
void brz_config_set_b(cmph_config_t *mph, cmph_uint32 b);
void brz_config_set_algo(cmph_config_t *mph, CMPH_ALGO algo);
void brz_config_set_memory_availability(cmph_config_t *mph, cmph_uint32 memory_availability);
void brz_config_destroy(cmph_config_t *mph);
cmph_t *brz_new(cmph_config_t *mph, double c);
void brz_load(FILE *f, cmph_t *mphf);
int brz_dump(cmph_t *mphf, FILE *f);
void brz_destroy(cmph_t *mphf);
cmph_uint32 brz_search(cmph_t *mphf, const char *key, cmph_uint32 keylen);
/** \fn void brz_pack(cmph_t *mphf, void *packed_mphf);
* \brief Support the ability to pack a perfect hash function into a preallocated contiguous memory space pointed by packed_mphf.
* \param mphf pointer to the resulting mphf
* \param packed_mphf pointer to the contiguous memory area used to store the resulting mphf. The size of packed_mphf must be at least cmph_packed_size()
*/
void brz_pack(cmph_t *mphf, void *packed_mphf);
/** \fn cmph_uint32 brz_packed_size(cmph_t *mphf);
* \brief Return the amount of space needed to pack mphf.
* \param mphf pointer to a mphf
* \return the size of the packed function or zero for failures
*/
cmph_uint32 brz_packed_size(cmph_t *mphf);
/** cmph_uint32 brz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
* \brief Use the packed mphf to do a search.
* \param packed_mphf pointer to the packed mphf
* \param key key to be hashed
* \param keylen key legth in bytes
* \return The mphf value
*/
cmph_uint32 brz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen);
#endif

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#ifndef __CMPH_BRZ_STRUCTS_H__
#define __CMPH_BRZ_STRUCTS_H__
#include "hash_state.h"
struct __brz_data_t
{
CMPH_ALGO algo; // CMPH algo for generating the MPHFs for the buckets (Just CMPH_FCH and CMPH_BMZ8)
cmph_uint32 m; // edges (words) count
double c; // constant c
cmph_uint8 *size; // size[i] stores the number of edges represented by g[i][...].
cmph_uint32 *offset; // offset[i] stores the sum: size[0] + size[1] + ... size[i-1].
cmph_uint8 **g; // g function.
cmph_uint32 k; // number of components
hash_state_t **h1;
hash_state_t **h2;
hash_state_t * h0;
};
struct __brz_config_data_t
{
CMPH_HASH hashfuncs[3];
CMPH_ALGO algo; // CMPH algo for generating the MPHFs for the buckets (Just CMPH_FCH and CMPH_BMZ8)
double c; // constant c
cmph_uint32 m; // edges (words) count
cmph_uint8 *size; // size[i] stores the number of edges represented by g[i][...].
cmph_uint32 *offset; // offset[i] stores the sum: size[0] + size[1] + ... size[i-1].
cmph_uint8 **g; // g function.
cmph_uint8 b; // parameter b.
cmph_uint32 k; // number of components
hash_state_t **h1;
hash_state_t **h2;
hash_state_t * h0;
cmph_uint32 memory_availability;
cmph_uint8 * tmp_dir; // temporary directory
FILE * mphf_fd; // mphf file
};
#endif

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