CAReferenceCounted.h

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#ifndef __CAReferenceCounted_h__
#define __CAReferenceCounted_h__

#include "CAAtomic.h"

// base class for reference-counted objects
class CAReferenceCounted {
public:
    CAReferenceCounted() : mRefCount(1) {}
    
    void    retain() { CAAtomicIncrement32(&mRefCount); }
    
    void    release() 
            { 
                SInt32 rc = CAAtomicDecrement32 (&mRefCount);
                if (rc == 0) {
                    releaseObject();
                }
            }

protected:
    virtual ~CAReferenceCounted() { }
    
    virtual void releaseObject () 
            { 
                delete this; 
            }
    
    SInt32  GetReferenceCount() const { return mRefCount; }
private:
    SInt32      mRefCount;

    CAReferenceCounted(const CAReferenceCounted &a) : mRefCount(0) { }
    CAReferenceCounted &operator=(const CAReferenceCounted &a) { return *this; }
};


#endif // __CAReferenceCounted_h__