#include "tsmartpointer.h"
#include "tthreadmessage.h"

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

namespace
{

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

typedef TAtomicVar *TAtomicVarPtr;

const int maxClassCode = 200;
TAtomicVarPtr instanceCounts[maxClassCode + 1];

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

inline TAtomicVar &getInstanceCounter(TINT32 classCode)
{
	assert(0 <= classCode && classCode <= maxClassCode);
	TAtomicVarPtr &instanceCountPtr = instanceCounts[classCode];
	if (instanceCountPtr == 0) {
		static TThread::Mutex mutex;
		TThread::MutexLocker g(&mutex);
		if (instanceCountPtr == 0)
			instanceCountPtr = new TAtomicVar();
	}
	assert(instanceCountPtr);
	return *instanceCountPtr;
}

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

} // namespace

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

#ifdef INSTANCE_COUNT_ENABLED
const TINT32 TSmartObject::m_unknownClassCode = 0;
#endif

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
}

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

TINT32 TSmartObject::getInstanceCount(ClassCode
#ifdef INSTANCE_COUNT_ENABLED
										  code
#endif
									  )
{
#ifdef INSTANCE_COUNT_ENABLED
	TAtomicVar &instanceCount = getInstanceCounter(code);
	return instanceCount;
#else
	assert(0);
	return 0;
#endif
}

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