59 lines
869 B
Ruby
59 lines
869 B
Ruby
# -*- coding: binary -*-
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require 'thread'
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module Rex
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###
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#
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# This module provides a uniform reference counted interface for classes to
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# use.
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#
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###
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module Ref
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#
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# Initializes the reference count to one.
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#
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def refinit
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@_references = 1
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@_references_mutex = Mutex.new
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self
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end
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#
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# Increments the total number of references.
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#
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def ref
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@_references_mutex.synchronize {
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@_references += 1
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}
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self
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end
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#
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# Decrements the total number of references. If the reference count
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# reaches zero, true is returned. Otherwise, false is returned.
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#
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def deref
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@_references_mutex.synchronize {
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if ((@_references -= 1) == 0)
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cleanup
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true
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else
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false
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end
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}
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end
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#
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# Called to clean up resources once the ref count drops to zero.
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#
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def cleanup
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end
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end
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end
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