Package smartcard :: Module Synchronization
Source Code for Module smartcard.Synchronization

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