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Hold/manage thread locks for arbitrary resource keys
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Methods
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__getitem__
__init__
attempt
locked
obtain
release
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__getitem__
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__getitem__ ( self, key )
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__init__
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__init__ ( self )
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attempt
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attempt ( self, key )
Nonblocking, nestable attempt to acquire; returns success flag
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locked
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locked ( self, key )
Is this key owned by the current thread?
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obtain
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obtain ( self, key )
Blocking, nestable wait to acquire; success unless error
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release
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release ( self, key )
Release one level of locking; key must be locked() when called
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