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deps/g3dlite/include/G3D/ReferenceCount.h

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+/**
+  \file G3D/ReferenceCount.h
+
+  Reference Counting Garbage Collector for C++
+
+  \maintainer Morgan McGuire, http://graphics.cs.williams.edu
+
+  \created 2001-10-23
+  \edited  2013-01-05
+*/
+#ifndef G3D_ReferenceCount_h
+#define G3D_ReferenceCount_h
+
+#include "G3D/platform.h"
+#include "G3D/debug.h"
+#include "G3D/AtomicInt32.h"
+
+#define USE_SHARED_PTR
+
+#define ReferenceCountedPointer shared_ptr
+#define WeakReferenceCountedPointer weak_ptr
+namespace G3D {
+
+class ReferenceCountedObject : public enable_shared_from_this<ReferenceCountedObject> {
+public:
+    virtual ~ReferenceCountedObject() {};
+};
+
+} // namespace
+
+namespace G3D {
+
+template<class T>
+bool isNull(const ReferenceCountedPointer<T>& ptr) {
+    return ! ptr;
+}
+
+template<class T>
+bool notNull(const ReferenceCountedPointer<T>& ptr) {
+    return (bool)ptr;
+}
+
+template<class T>
+bool isNull(const T* ptr) {
+    return ptr == NULL;
+}
+
+template<class T>
+bool notNull(const T* ptr) {
+    return ptr != NULL;
+}
+
+} // namespace
+
+#endif
+