mirror of https://github.com/Mikaela/Limnoria.git
239 lines
8.1 KiB
Python
239 lines
8.1 KiB
Python
###
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# Copyright (c) 2002-2005, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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"""
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Module for general worldly stuff, like global variables and whatnot.
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"""
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import gc
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import os
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import sys
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import time
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import atexit
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import select
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import threading
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import multiprocessing
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import re
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from . import conf, drivers, ircutils, log, registry
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startedAt = time.time() # Just in case it doesn't get set later.
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starting = False
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mainThread = threading.currentThread()
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def isMainThread():
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return mainThread is threading.currentThread()
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threadsSpawned = 1 # Starts at one for the initial "thread."
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class SupyThread(threading.Thread, object):
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def __init__(self, *args, **kwargs):
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global threadsSpawned
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threadsSpawned += 1
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super(SupyThread, self).__init__(*args, **kwargs)
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log.debug('Spawning thread %q.', self.getName())
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processesSpawned = 1 # Starts at one for the initial process.
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class SupyProcess(multiprocessing.Process):
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def __init__(self, *args, **kwargs):
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global processesSpawned
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processesSpawned += 1
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super(SupyProcess, self).__init__(*args, **kwargs)
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log.debug('Spawning process %q.', self.name)
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if sys.version_info[0:3] == (3, 3, 1) and hasattr(select, 'poll'):
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# http://bugs.python.org/issue17707
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import multiprocessing.connection
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def _poll(fds, timeout):
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if timeout is not None:
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timeout = int(timeout * 1000) # timeout is in milliseconds
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fd_map = {}
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pollster = select.poll()
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for fd in fds:
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pollster.register(fd, select.POLLIN)
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if hasattr(fd, 'fileno'):
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fd_map[fd.fileno()] = fd
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else:
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fd_map[fd] = fd
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ls = []
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for fd, event in pollster.poll(timeout):
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if event & select.POLLNVAL:
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raise ValueError('invalid file descriptor %i' % fd)
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ls.append(fd_map[fd])
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return ls
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multiprocessing.connection._poll = _poll
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commandsProcessed = 0
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ircs = [] # A list of all the IRCs.
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def getIrc(network):
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network = network.lower()
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for irc in ircs:
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if irc.network.lower() == network:
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return irc
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return None
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def _flushUserData():
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userdataFilename = os.path.join(conf.supybot.directories.conf(),
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'userdata.conf')
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registry.close(conf.users, userdataFilename)
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flushers = [_flushUserData] # A periodic function will flush all these.
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registryFilename = None
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def flush():
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"""Flushes all the registered flushers."""
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for (i, f) in enumerate(flushers):
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try:
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f()
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except Exception as e:
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log.exception('Uncaught exception in flusher #%s (%s):', i, f)
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def debugFlush(s=''):
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if conf.supybot.debug.flushVeryOften():
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if s:
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log.debug(s)
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flush()
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def upkeep():
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"""Does upkeep (like flushing, garbage collection, etc.)"""
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# Just in case, let's clear the exception info.
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try:
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sys.exc_clear()
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except AttributeError:
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# Python 3 does not have sys.exc_clear. The except statement clears
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# the info itself (and we've just entered an except statement)
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pass
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if os.name == 'nt':
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try:
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import msvcrt
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msvcrt.heapmin()
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except ImportError:
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pass
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except IOError: # Win98 sux0rs!
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pass
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if conf.daemonized:
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# If we're daemonized, sys.stdout has been replaced with a StringIO
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# object, so let's see if anything's been printed, and if so, let's
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# log.warning it (things shouldn't be printed, and we're more likely
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# to get bug reports if we make it a warning).
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if not hasattr(sys.stdout, 'getvalue'):
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# Stupid twisted sometimes replaces our stdout with theirs, because
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# "The Twisted Way Is The Right Way" (ha!). So we're stuck simply
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# returning.
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log.warning('Expected cStringIO as stdout, got %r.', sys.stdout)
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return
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s = sys.stdout.getvalue()
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if s:
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log.warning('Printed to stdout after daemonization: %s', s)
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sys.stdout.seek(0)
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sys.stdout.truncate() # Truncates to current offset.
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s = sys.stderr.getvalue()
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if s:
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log.error('Printed to stderr after daemonization: %s', s)
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sys.stderr.seek(0)
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sys.stderr.truncate() # Truncates to current offset.
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doFlush = conf.supybot.flush() and not starting
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if doFlush:
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flush()
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# This is so registry._cache gets filled.
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# This seems dumb, so we'll try not doing it anymore.
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#if registryFilename is not None:
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# registry.open(registryFilename)
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if not dying:
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if sys.version_info[0] < 3:
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log.debug('Regexp cache size: %s', len(re._cache))
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log.debug('Pattern cache size: %s', len(ircutils._patternCache))
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log.debug('HostmaskPatternEqual cache size: %s',
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len(ircutils._hostmaskPatternEqualCache))
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#timestamp = log.timestamp()
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if doFlush:
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log.info('Flushers flushed and garbage collected.')
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else:
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log.info('Garbage collected.')
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collected = gc.collect()
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if gc.garbage:
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log.warning('Noncollectable garbage (file this as a bug on SF.net): %s',
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gc.garbage)
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return collected
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def makeDriversDie():
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"""Kills drivers."""
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log.info('Killing Driver objects.')
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for driver in drivers._drivers.itervalues():
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driver.die()
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def makeIrcsDie():
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"""Kills Ircs."""
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log.info('Killing Irc objects.')
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for irc in ircs[:]:
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if not irc.zombie:
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irc.die()
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else:
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log.debug('Not killing %s, it\'s already a zombie.', irc)
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def startDying():
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"""Starts dying."""
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log.info('Shutdown initiated.')
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global dying
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dying = True
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def finished():
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log.info('Shutdown complete.')
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# These are in order; don't reorder them for cosmetic purposes. The order
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# in which they're registered is the reverse order in which they will run.
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atexit.register(finished)
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atexit.register(upkeep)
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atexit.register(makeIrcsDie)
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atexit.register(makeDriversDie)
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atexit.register(startDying)
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##################################################
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##################################################
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##################################################
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## Don't even *think* about messing with these. ##
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##################################################
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##################################################
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##################################################
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dying = False
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testing = False
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starting = False
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profiling = False
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documenting = False
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# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
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