blob: 4b3f2f3d2c1ed6e3178709a074aefb7884aea328 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
from threading import Lock
class ParamFactory:
def __init__(self, klass, **extraMethods):
self.lock = Lock()
self.cache = {}
self.klass = klass
for name, func in extraMethods.items():
setattr(self, name, func)
def __call__(self, *args):
self.lock.acquire()
if not self.cache.has_key(args):
value = self.klass(*args)
self.cache[args] = value
self.lock.release()
return value
else:
self.lock.release()
return self.cache[args]
def allInstances(self):
return self.cache.values()
|
