00001 00002 #ifndef RCOBJECT_H 00003 #define RCOBJECT_H 00004 00038 class RCObject { 00039 public: 00040 void addReference(); 00041 void removeReference(); 00042 const bool isShared() const; 00043 const size_t refCnt() const; 00044 00045 protected: 00046 RCObject(); 00047 RCObject(const RCObject& rhs); 00048 RCObject& operator=(const RCObject &rhs); 00049 virtual ~RCObject(); 00050 00051 private: 00052 size_t refCount; 00053 }; 00054 00055 inline 00056 RCObject::RCObject() : refCount(0) {} 00057 00058 inline 00059 RCObject::RCObject(const RCObject& ) : refCount(0) {} 00060 00061 inline 00062 RCObject& RCObject::operator=(const RCObject&) 00063 { 00064 return *this; 00065 } 00066 00067 inline 00068 RCObject::~RCObject() {} 00069 00070 inline 00071 void RCObject::addReference() { refCount++; } 00072 00073 inline 00074 void RCObject::removeReference() 00075 { 00076 if (--refCount == 0) { 00077 delete this; 00078 } 00079 } 00080 00081 inline 00082 const bool RCObject::isShared() const 00083 { 00084 return refCount > 1; 00085 } 00086 00087 inline 00088 const size_t RCObject::refCnt() const 00089 { 00090 return refCount; 00091 } 00092 00093 00094 #endif
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