mirror of
https://github.com/Mikaela/Limnoria.git
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84 lines
3.5 KiB
Python
84 lines
3.5 KiB
Python
###
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# Copyright (c) 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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import types
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import threading
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def changeFunctionName(f, name, doc=None):
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if doc is None:
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doc = f.__doc__
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newf = types.FunctionType(f.func_code, f.func_globals, name,
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f.func_defaults, f.func_closure)
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newf.__doc__ = doc
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return newf
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class Object(object):
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def __ne__(self, other):
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return not self == other
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class Synchronized(type):
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METHODS = '__synchronized__'
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LOCK = '_Synchronized_rlock'
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def __new__(cls, name, bases, dict):
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sync = set()
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for base in bases:
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if hasattr(base, Synchronized.METHODS):
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sync.update(getattr(base, Synchronized.METHODS))
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if Synchronized.METHODS in dict:
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sync.update(dict[Synchronized.METHODS])
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if sync:
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def synchronized(f):
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def g(self, *args, **kwargs):
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lock = getattr(self, Synchronized.LOCK)
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lock.acquire()
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try:
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f(self, *args, **kwargs)
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finally:
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lock.release()
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return changeFunctionName(g, f.func_name, f.__doc__)
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for attr in sync:
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if attr in dict:
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dict[attr] = synchronized(dict[attr])
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original__init__ = dict.get('__init__')
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def __init__(self, *args, **kwargs):
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if not hasattr(self, Synchronized.LOCK):
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setattr(self, Synchronized.LOCK, threading.RLock())
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if original__init__:
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original__init__(self, *args, **kwargs)
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else:
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# newclass is defined below.
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super(newclass, self).__init__(*args, **kwargs)
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dict['__init__'] = __init__
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newclass = super(Synchronized, cls).__new__(cls, name, bases, dict)
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return newclass
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# vim:set shiftwidth=4 softtabstop=8 expandtab textwidth=78:
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