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25 lines
956 B
25 lines
956 B
# Copyright (c) 2005-2009 Zooko Wilcox-O'Hearn
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# This file is part of pyutil; see README.rst for licensing terms.
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import warnings
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# from the Twisted library
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from twisted.internet import reactor
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# from the pyutil library
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from weakutil import WeakMethod
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def callLater_weakly(delay, func, *args, **kwargs):
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"""
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Call func later, but if func is a bound method then make the reference it holds to object be a weak reference.
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Therefore, if this scheduled event is a bound method and it is the only thing keeping the object from being garbage collected, the object will be garbage collected and the event will be cancelled.
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"""
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warnings.warn("deprecated", DeprecationWarning)
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def cleanup(weakmeth, thedeadweakref):
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if weakmeth.callId.active():
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weakmeth.callId.cancel()
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weakmeth = WeakMethod(func, callback=cleanup)
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weakmeth.callId = reactor.callLater(delay, weakmeth, *args, **kwargs)
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return weakmeth
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