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Revision 6637, 0.7 kB
(checked in by glyph, 6 years ago)
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Object database for Twisted. This Checkin Sponsored by Divmod, LLC
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""" |
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A module for externalized finalizers. |
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""" |
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import weakref |
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garbageKey = 0 |
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def callbackFactory(num, fins): |
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def _cb(w): |
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del refs[num] |
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for fx in fins: |
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fx() |
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return _cb |
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refs = {} |
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def register(inst): |
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global garbageKey |
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garbageKey += 1 |
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r = weakref.ref(inst, callbackFactory(garbageKey, inst.__finalizers__())) |
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refs[garbageKey] = r |
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if __name__ == '__main__': |
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def fin(): |
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print 'I am _so_ dead.' |
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class Finalizeable: |
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""" |
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An un-sucky __del__ |
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""" |
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def __finalizers__(self): |
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""" |
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I'm going away. |
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""" |
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return [fin] |
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f = Finalizeable() |
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f.f2 = f |
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register(f) |
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del f |
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import gc |
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gc.collect() |
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print 'deled' |
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