#include "tsmartpointer.h"

#include "tthread.h"

//-------------------------------------------------------------------

namespace

{

//-------------------------------------------------------------------

typedef TAtomicVar *TAtomicVarPtr;

const int maxClassCode = 100;

TAtomicVarPtr instanceCounts[maxClassCode + 1];

//-------------------------------------------------------------------

inline TAtomicVar &getInstanceCounter(long classCode)

{

	assert(0 <= classCode && classCode <= maxClassCode);

	TAtomicVarPtr &instanceCountPtr = instanceCounts[classCode];

	if (instanceCountPtr == 0) {

		static TThread::Mutex mutex;

		TThread::ScopedLock g(mutex);

		if (instanceCountPtr == 0)

			instanceCountPtr = new TAtomicVar();

	}

	assert(instanceCountPtr);

	return *instanceCountPtr;

}

//-------------------------------------------------------------------

} // namespace

//-------------------------------------------------------------------

const long TSmartObject::m_unknownClassCode = 0;

void TSmartObject::incrementInstanceCount()

{

#ifdef INSTANCE_COUNT_ENABLED

	TAtomicVar &instanceCount = getInstanceCounter(m_classCodeRef);

	++instanceCount;

#else

	assert(0);

#endif

}

//-------------------------------------------------------------------

void TSmartObject::decrementInstanceCount()

{

#ifdef INSTANCE_COUNT_ENABLED

	TAtomicVar &instanceCount = getInstanceCounter(m_classCodeRef);

	assert(instanceCount > 0);

	--instanceCount;

#else

	assert(0);

#endif

}

//-------------------------------------------------------------------

long TSmartObject::getInstanceCount(ClassCode code)

{

#ifdef INSTANCE_COUNT_ENABLED

	TAtomicVar &instanceCount = getInstanceCounter(code);

	return instanceCount;

#else

	assert(0);

	return 0;

#endif

}

//-------------------------------------------------------------------