third_party/twisted_8_1/twisted/python/finalize.py - Issue 12261012: Remove third_party/twisted_8_1

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Side by Side Diff: third_party/twisted_8_1/twisted/python/finalize.py

Issue 12261012: Remove third_party/twisted_8_1 (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/tools/build

Patch Set: Created 7 years, 10 months ago

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1

2 """

3 A module for externalized finalizers.

4 """

5

6 import weakref

7

8 garbageKey = 0

9

10 def callbackFactory(num, fins):

11 def _cb(w):

12 del refs[num]

13 for fx in fins:

14 fx()

15 return _cb

16

17 refs = {}

18

19 def register(inst):

20 global garbageKey

21 garbageKey += 1

22 r = weakref.ref(inst, callbackFactory(garbageKey, inst.__finalizers__()))

23 refs[garbageKey] = r

24

25 if __name__ == '__main__':

26 def fin():

27 print 'I am _so_ dead.'

28

29 class Finalizeable:

30 """

31 An un-sucky __del__

32 """

33

34 def __finalizers__(self):

35 """

36 I'm going away.

37 """

38 return [fin]

39

40 f = Finalizeable()

41 f.f2 = f

42 register(f)

43 del f

44 import gc

45 gc.collect()

46 print 'deled'

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