62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
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/**
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@file ReferenceCount.cpp
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Reference Counting Garbage Collector for C++
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@maintainer Morgan McGuire, http://graphics.cs.williams.edu
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@cite Adapted and extended from Justin Miller's "RGC" class that appeared in BYTE magazine.
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@cite See also http://www.jelovic.com/articles/cpp_without_memory_errors_slides.htm
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@created 2001-10-23
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@edited 2009-04-25
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*/
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#include "G3D/platform.h"
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#include "G3D/ReferenceCount.h"
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namespace G3D {
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ReferenceCountedObject::ReferenceCountedObject() :
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ReferenceCountedObject_refCount(0),
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ReferenceCountedObject_weakPointer(0) {
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debugAssertM(isValidHeapPointer(this),
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"Reference counted objects must be allocated on the heap.");
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}
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void ReferenceCountedObject::ReferenceCountedObject_zeroWeakPointers() {
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// Tell all of my weak pointers that I'm gone.
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_WeakPtrLinkedList* node = ReferenceCountedObject_weakPointer;
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while (node != NULL) {
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// Notify the weak pointer that it is going away
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node->weakPtr->objectCollected();
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// Free the node and advance
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_WeakPtrLinkedList* tmp = node;
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node = node->next;
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delete tmp;
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}
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}
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ReferenceCountedObject::~ReferenceCountedObject() {}
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ReferenceCountedObject::ReferenceCountedObject(const ReferenceCountedObject& notUsed) :
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ReferenceCountedObject_refCount(0),
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ReferenceCountedObject_weakPointer(0) {
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(void)notUsed;
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debugAssertM(G3D::isValidHeapPointer(this),
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"Reference counted objects must be allocated on the heap.");
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}
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ReferenceCountedObject& ReferenceCountedObject::operator=(const ReferenceCountedObject& other) {
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(void)other;
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// Nothing changes when I am assigned; the reference count on
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// both objects is the same (although my super-class probably
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// changes).
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return *this;
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}
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} // G3D
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