45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file weakPointerToVoid.h
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* @author drose
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* @date 2004-09-27
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*/
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#ifndef WEAKPOINTERTOVOID_H
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#define WEAKPOINTERTOVOID_H
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#include "pandabase.h"
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#include "pointerToVoid.h"
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#include "weakPointerCallback.h"
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#include "weakReferenceList.h"
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/**
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* This is the specialization of PointerToVoid for weak pointers. It needs an
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* additional flag to indicate that the pointer has been deleted.
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*/
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class EXPCL_PANDA_EXPRESS WeakPointerToVoid : public PointerToVoid {
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protected:
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constexpr WeakPointerToVoid() noexcept = default;
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public:
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INLINE void add_callback(WeakPointerCallback *callback) const;
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INLINE void remove_callback(WeakPointerCallback *callback) const;
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PUBLISHED:
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INLINE bool was_deleted() const;
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INLINE bool is_valid_pointer() const;
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protected:
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mutable WeakReferenceList *_weak_ref = nullptr;
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};
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#include "weakPointerToVoid.I"
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#endif
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