55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// Filename: weakReferenceList.h
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// Created by: drose (27Sep04)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef WEAKREFERENCELIST_H
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#define WEAKREFERENCELIST_H
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#include "pandabase.h"
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#include "pset.h"
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#include "mutexImpl.h"
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class WeakPointerToVoid;
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////////////////////////////////////////////////////////////////////
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// Class : WeakReferenceList
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// Description : This is a list of WeakPointerTo's that share a
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// reference to a given ReferenceCount object. It is
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// stored in a separate class since it is assumed that
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// most ReferenceCount objects do not need to store this
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// list at all; this avoids bloating every
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// ReferenceCount object in the world with the size of
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// this object.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDAEXPRESS WeakReferenceList {
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public:
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WeakReferenceList();
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~WeakReferenceList();
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void add_reference(WeakPointerToVoid *ptv);
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void clear_reference(WeakPointerToVoid *ptv);
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private:
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typedef pset<WeakPointerToVoid *> Pointers;
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Pointers _pointers;
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MutexImpl _lock;
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};
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#include "weakReferenceList.I"
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#endif
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