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"""
from Thinking in Python, Bruce Eckel
http://mindview.net/Books/TIPython
Simple emulation of Java's 'synchronized'
keyword, from Peter Norvig.
"""
from threading import RLock
def synchronized(method):
def f(*args):
self = args[0]
self.mutex.acquire()
# print method.__name__, 'acquired'
try:
return apply(method, args)
finally:
self.mutex.release()
# print method.__name__, 'released'
return f
def synchronize(klass, names=None):
"""Synchronize methods in the given class.
Only synchronize the methods whose names are
given, or all methods if names=None."""
if type(names)==type(''):
names = names.split()
for (name, val) in klass.__dict__.items():
if callable(val) and name != '__init__' and \
(names == None or name in names):
# print "synchronizing", name
klass.__dict__[name] = synchronized(val)
# You can create your own self.mutex, or inherit
# from this class:
class Synchronization:
def __init__(self):
self.mutex = RLock()
#:~
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