#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

}

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