Source Code for Module smartcard.Synchronization

 1  """ 
 2  from Thinking in Python, Bruce Eckel 
 3  http://python-3-patterns-idioms-test.readthedocs.org/en/latest/Observer.html 
 4   
 5  (c) Copyright 2008, Creative Commons Attribution-Share Alike 3.0. 
 6   
 7  Simple emulation of Java's 'synchronized' 
 8  keyword, from Peter Norvig. 
 9  """ 
10   
11  from threading import RLock 
12   
13   
14 -def synchronized(method): 
15   
16      def f(*args): 
17          self = args[0] 
18          self.mutex.acquire() 
19          # print(method.__name__, 'acquired') 
20          try: 
21              return method(*args) 
22          finally: 
23              self.mutex.release() 
24              # print(method.__name__, 'released') 
25      return f 
26   
27   
28 -def synchronize(klass, names=None): 
29      """Synchronize methods in the given class. 
30      Only synchronize the methods whose names are 
31      given, or all methods if names=None.""" 
32      if type(names) == type(''): 
33              names = names.split() 
34      for (name, val) in list(klass.__dict__.items()): 
35          if callable(val) and name != '__init__' and \ 
36              (names == None or name in names): 
37                  # print("synchronizing", name) 
38                  setattr(klass, name, synchronized(val)) 
39   
40   
41 -class Synchronization(object): 
42      # You can create your own self.mutex, or inherit from this class: 
43   
44 -    def __init__(self): 
45          self.mutex = RLock() 
46