btQuickprof.cpp

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/*
 
***************************************************************************************************
**
** profile.cpp
**
** Real-Time Hierarchical Profiling for Game Programming Gems 3
**
** by Greg Hjelstrom & Byon Garrabrant
**
***************************************************************************************************/
 
// Credits: The Clock class was inspired by the Timer classes in
// Ogre (www.ogre3d.org).
 
#include "btQuickprof.h"
#include "btThreads.h"
 
 
 
 
#ifdef __CELLOS_LV2__
#include <sys/sys_time.h>
#include <sys/time_util.h>
#include <stdio.h>
#endif
 
#if defined (SUNOS) || defined (__SUNOS__)
#include <stdio.h>
#endif
#ifdef __APPLE__
#include <mach/mach_time.h>
#include <TargetConditionals.h>
#endif
 
#if defined(WIN32) || defined(_WIN32)
 
#define BT_USE_WINDOWS_TIMERS
#define WIN32_LEAN_AND_MEAN
#define NOWINRES
#define NOMCX
#define NOIME
 
#ifdef _XBOX
        #include <Xtl.h>
#else //_XBOX
        #include <windows.h>
 
#if WINVER <0x0602
#define GetTickCount64 GetTickCount
#endif
 
#endif //_XBOX
 
#include <time.h>
 
 
#else //_WIN32
#include <sys/time.h>
 
#ifdef BT_LINUX_REALTIME
//required linking against rt (librt)
#include <time.h>
#endif //BT_LINUX_REALTIME
 
#endif //_WIN32
 
#define mymin(a,b) (a > b ? a : b)
 
struct btClockData
{
 
#ifdef BT_USE_WINDOWS_TIMERS
        LARGE_INTEGER mClockFrequency;
        LONGLONG mStartTick;
        LARGE_INTEGER mStartTime;
#else
#ifdef __CELLOS_LV2__
        uint64_t        mStartTime;
#else
#ifdef __APPLE__
    uint64_t mStartTimeNano;
#endif
        struct timeval mStartTime;
#endif
#endif //__CELLOS_LV2__
 
};

btClock::btClock()
{
        m_data = new btClockData;
#ifdef BT_USE_WINDOWS_TIMERS
        QueryPerformanceFrequency(&m_data->mClockFrequency);
#endif
        reset();
}
 
btClock::~btClock()
{
        delete m_data;
}
 
btClock::btClock(const btClock& other)
{
        m_data = new btClockData;
        *m_data = *other.m_data;
}
 
btClock& btClock::operator=(const btClock& other)
{
        *m_data = *other.m_data;
        return *this;
}
 

void btClock::reset()
{
#ifdef BT_USE_WINDOWS_TIMERS
        QueryPerformanceCounter(&m_data->mStartTime);
        m_data->mStartTick = GetTickCount64();
#else
#ifdef __CELLOS_LV2__
 
        typedef uint64_t  ClockSize;
        ClockSize newTime;
        //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory");
        SYS_TIMEBASE_GET( newTime );
        m_data->mStartTime = newTime;
#else
#ifdef __APPLE__
    m_data->mStartTimeNano = mach_absolute_time();
#endif
        gettimeofday(&m_data->mStartTime, 0);
#endif
#endif
}

unsigned long long int btClock::getTimeMilliseconds()
{
#ifdef BT_USE_WINDOWS_TIMERS
        LARGE_INTEGER currentTime;
        QueryPerformanceCounter(&currentTime);
        LONGLONG elapsedTime = currentTime.QuadPart -
                m_data->mStartTime.QuadPart;
                // Compute the number of millisecond ticks elapsed.
        unsigned long msecTicks = (unsigned long)(1000 * elapsedTime /
                m_data->mClockFrequency.QuadPart);
 
                return msecTicks;
#else
 
#ifdef __CELLOS_LV2__
                uint64_t freq=sys_time_get_timebase_frequency();
                double dFreq=((double) freq) / 1000.0;
                typedef uint64_t  ClockSize;
                ClockSize newTime;
                SYS_TIMEBASE_GET( newTime );
                //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory");
 
                return (unsigned long int)((double(newTime-m_data->mStartTime)) / dFreq);
#else
 
                struct timeval currentTime;
                gettimeofday(&currentTime, 0);
                return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000 +
                        (currentTime.tv_usec - m_data->mStartTime.tv_usec) / 1000;
#endif //__CELLOS_LV2__
#endif
}

unsigned long long int btClock::getTimeMicroseconds()
{
#ifdef BT_USE_WINDOWS_TIMERS
        //see https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx   
                LARGE_INTEGER currentTime, elapsedTime;
                
                QueryPerformanceCounter(&currentTime);
                elapsedTime.QuadPart = currentTime.QuadPart - 
                        m_data->mStartTime.QuadPart;
                elapsedTime.QuadPart *= 1000000;
                elapsedTime.QuadPart /= m_data->mClockFrequency.QuadPart;
 
                return (unsigned long long) elapsedTime.QuadPart;
#else
 
#ifdef __CELLOS_LV2__
                uint64_t freq=sys_time_get_timebase_frequency();
                double dFreq=((double) freq)/ 1000000.0;
                typedef uint64_t  ClockSize;
                ClockSize newTime;
                //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory");
                SYS_TIMEBASE_GET( newTime );
 
                return (unsigned long int)((double(newTime-m_data->mStartTime)) / dFreq);
#else
 
                struct timeval currentTime;
                gettimeofday(&currentTime, 0);
                return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000000 +
                        (currentTime.tv_usec - m_data->mStartTime.tv_usec);
#endif//__CELLOS_LV2__
#endif
}
 
unsigned long long int btClock::getTimeNanoseconds()
{
#ifdef BT_USE_WINDOWS_TIMERS
        //see https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx
                LARGE_INTEGER currentTime, elapsedTime;
                
                QueryPerformanceCounter(&currentTime);
                elapsedTime.QuadPart = currentTime.QuadPart - 
                        m_data->mStartTime.QuadPart;
                elapsedTime.QuadPart *= 1000000000;
                elapsedTime.QuadPart /= m_data->mClockFrequency.QuadPart;
 
                return (unsigned long long) elapsedTime.QuadPart;
#else
 
#ifdef __CELLOS_LV2__
                uint64_t freq=sys_time_get_timebase_frequency();
                double dFreq=((double) freq)/ 1e9;
                typedef uint64_t  ClockSize;
                ClockSize newTime;
                //__asm __volatile__( "mftb %0" : "=r" (newTime) : : "memory");
                SYS_TIMEBASE_GET( newTime );
 
                return (unsigned long int)((double(newTime-m_data->mStartTime)) / dFreq);
#else
#ifdef __APPLE__
    uint64_t ticks = mach_absolute_time() - m_data->mStartTimeNano;
    static long double conversion = 0.0L;
    if( 0.0L == conversion )
    {
        // attempt to get conversion to nanoseconds
        mach_timebase_info_data_t info;
        int err = mach_timebase_info( &info );
        if( err )
        {
            btAssert(0);
            conversion = 1.;
        }
        conversion = info.numer / info.denom;
    }
    return (ticks * conversion);
 
    
#else//__APPLE__
    
#ifdef BT_LINUX_REALTIME
    timespec ts;
    clock_gettime(CLOCK_REALTIME,&ts);
    return 1000000000*ts.tv_sec + ts.tv_nsec;
#else
        struct timeval currentTime;
                gettimeofday(&currentTime, 0);
                return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1e9 +
                        (currentTime.tv_usec - m_data->mStartTime.tv_usec)*1000;
#endif //BT_LINUX_REALTIME
 
#endif//__APPLE__
#endif//__CELLOS_LV2__
#endif 
}
 

btScalar btClock::getTimeSeconds()
{
        static const btScalar microseconds_to_seconds = btScalar(0.000001);
        return btScalar(getTimeMicroseconds()) * microseconds_to_seconds;
}
 
#ifndef BT_NO_PROFILE
 
 
static btClock gProfileClock;
 
 
inline void Profile_Get_Ticks(unsigned long int * ticks)
{
        *ticks = (unsigned long int)gProfileClock.getTimeMicroseconds();
}
 
inline float Profile_Get_Tick_Rate(void)
{
//      return 1000000.f;
        return 1000.f;
 
}
 
 
/***************************************************************************************************
**
** CProfileNode
**
***************************************************************************************************/
 
/***********************************************************************************************
 * INPUT:                                                                                      *
 * name - pointer to a static string which is the name of this profile node                    *
 * parent - parent pointer                                                                     *
 *                                                                                             *
 * WARNINGS:                                                                                   *
 * The name is assumed to be a static pointer, only the pointer is stored and compared for     *
 * efficiency reasons.                                                                         *
 *=============================================================================================*/
CProfileNode::CProfileNode( const char * name, CProfileNode * parent ) :
        Name( name ),
        TotalCalls( 0 ),
        TotalTime( 0 ),
        StartTime( 0 ),
        RecursionCounter( 0 ),
        Parent( parent ),
        Child( NULL ),
        Sibling( NULL ),
        m_userPtr(0)
{
        Reset();
}
 
 
void    CProfileNode::CleanupMemory()
{
        delete ( Child);
        Child = NULL;
        delete ( Sibling);
        Sibling = NULL;
}
 
CProfileNode::~CProfileNode( void )
{
        CleanupMemory();
}
 
 
/***********************************************************************************************
 * INPUT:                                                                                      *
 * name - static string pointer to the name of the node we are searching for                   *
 *                                                                                             *
 * WARNINGS:                                                                                   *
 * All profile names are assumed to be static strings so this function uses pointer compares   *
 * to find the named node.                                                                     *
 *=============================================================================================*/
CProfileNode * CProfileNode::Get_Sub_Node( const char * name )
{
        // Try to find this sub node
        CProfileNode * child = Child;
        while ( child ) {
                if ( child->Name == name ) {
                        return child;
                }
                child = child->Sibling;
        }
 
        // We didn't find it, so add it
 
        CProfileNode * node = new CProfileNode( name, this );
        node->Sibling = Child;
        Child = node;
        return node;
}
 
 
void    CProfileNode::Reset( void )
{
        TotalCalls = 0;
        TotalTime = 0.0f;
 
 
        if ( Child ) {
                Child->Reset();
        }
        if ( Sibling ) {
                Sibling->Reset();
        }
}
 
 
void    CProfileNode::Call( void )
{
        TotalCalls++;
        if (RecursionCounter++ == 0) {
                Profile_Get_Ticks(&StartTime);
        }
}
 
 
bool    CProfileNode::Return( void )
{
        if ( --RecursionCounter == 0 && TotalCalls != 0 ) {
                unsigned long int time;
                Profile_Get_Ticks(&time);
 
                time-=StartTime;
                TotalTime += (float)time / Profile_Get_Tick_Rate();
        }
        return ( RecursionCounter == 0 );
}
 
 
/***************************************************************************************************
**
** CProfileIterator
**
***************************************************************************************************/
CProfileIterator::CProfileIterator( CProfileNode * start )
{
        CurrentParent = start;
        CurrentChild = CurrentParent->Get_Child();
}
 
 
void    CProfileIterator::First(void)
{
        CurrentChild = CurrentParent->Get_Child();
}
 
 
void    CProfileIterator::Next(void)
{
        CurrentChild = CurrentChild->Get_Sibling();
}
 
 
bool    CProfileIterator::Is_Done(void)
{
        return CurrentChild == NULL;
}
 
 
void    CProfileIterator::Enter_Child( int index )
{
        CurrentChild = CurrentParent->Get_Child();
        while ( (CurrentChild != NULL) && (index != 0) ) {
                index--;
                CurrentChild = CurrentChild->Get_Sibling();
        }
 
        if ( CurrentChild != NULL ) {
                CurrentParent = CurrentChild;
                CurrentChild = CurrentParent->Get_Child();
        }
}
 
 
void    CProfileIterator::Enter_Parent( void )
{
        if ( CurrentParent->Get_Parent() != NULL ) {
                CurrentParent = CurrentParent->Get_Parent();
        }
        CurrentChild = CurrentParent->Get_Child();
}
 
 
/***************************************************************************************************
**
** CProfileManager
**
***************************************************************************************************/
 
 
 
 
CProfileNode        gRoots[BT_QUICKPROF_MAX_THREAD_COUNT]={
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),
        CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL),CProfileNode("Root",NULL)
};
 
 
CProfileNode* gCurrentNodes[BT_QUICKPROF_MAX_THREAD_COUNT]=
{
        &gRoots[ 0],      &gRoots[ 1],      &gRoots[ 2],      &gRoots[ 3],
        &gRoots[ 4],      &gRoots[ 5],      &gRoots[ 6],      &gRoots[ 7],
        &gRoots[ 8],      &gRoots[ 9],      &gRoots[10],      &gRoots[11],
        &gRoots[12],      &gRoots[13],      &gRoots[14],      &gRoots[15],
        &gRoots[16],      &gRoots[17],      &gRoots[18],      &gRoots[19],
        &gRoots[20],      &gRoots[21],      &gRoots[22],      &gRoots[23],
        &gRoots[24],      &gRoots[25],      &gRoots[26],      &gRoots[27],
        &gRoots[28],      &gRoots[29],      &gRoots[30],      &gRoots[31],
        &gRoots[32],      &gRoots[33],      &gRoots[34],      &gRoots[35],
        &gRoots[36],      &gRoots[37],      &gRoots[38],      &gRoots[39],
        &gRoots[40],      &gRoots[41],      &gRoots[42],      &gRoots[43],
        &gRoots[44],      &gRoots[45],      &gRoots[46],      &gRoots[47],
        &gRoots[48],      &gRoots[49],      &gRoots[50],      &gRoots[51],
        &gRoots[52],      &gRoots[53],      &gRoots[54],      &gRoots[55],
        &gRoots[56],      &gRoots[57],      &gRoots[58],      &gRoots[59],
        &gRoots[60],      &gRoots[61],      &gRoots[62],      &gRoots[63],
};
 
 
int                             CProfileManager::FrameCounter = 0;
unsigned long int                       CProfileManager::ResetTime = 0;
 
CProfileIterator *      CProfileManager::Get_Iterator( void )
{ 
 
                int threadIndex = btQuickprofGetCurrentThreadIndex2();
                if ((threadIndex<0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT)
                        return 0;
 
                return new CProfileIterator( &gRoots[threadIndex]); 
}
 
void                                            CProfileManager::CleanupMemory(void)
{
        for (int i=0;i<BT_QUICKPROF_MAX_THREAD_COUNT;i++)
        {
                gRoots[i].CleanupMemory();
        }
}
 
 
/***********************************************************************************************
 * CProfileManager::Start_Profile -- Begin a named profile                                    *
 *                                                                                             *
 * Steps one level deeper into the tree, if a child already exists with the specified name     *
 * then it accumulates the profiling; otherwise a new child node is added to the profile tree. *
 *                                                                                             *
 * INPUT:                                                                                      *
 * name - name of this profiling record                                                        *
 *                                                                                             *
 * WARNINGS:                                                                                   *
 * The string used is assumed to be a static string; pointer compares are used throughout      *
 * the profiling code for efficiency.                                                          *
 *=============================================================================================*/
void    CProfileManager::Start_Profile( const char * name )
{
        int threadIndex = btQuickprofGetCurrentThreadIndex2();
        if ((threadIndex<0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT)
                return;
 
        if (name != gCurrentNodes[threadIndex]->Get_Name()) {
                gCurrentNodes[threadIndex] = gCurrentNodes[threadIndex]->Get_Sub_Node( name );
        }
 
        gCurrentNodes[threadIndex]->Call();
}
 
 
/***********************************************************************************************
 * CProfileManager::Stop_Profile -- Stop timing and record the results.                       *
 *=============================================================================================*/
void    CProfileManager::Stop_Profile( void )
{
        int threadIndex = btQuickprofGetCurrentThreadIndex2();
        if ((threadIndex<0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT)
                return;
 
        // Return will indicate whether we should back up to our parent (we may
        // be profiling a recursive function)
        if (gCurrentNodes[threadIndex]->Return()) {
                gCurrentNodes[threadIndex] = gCurrentNodes[threadIndex]->Get_Parent();
        }
}
 
 
 
 
 
 
/***********************************************************************************************
 * CProfileManager::Reset -- Reset the contents of the profiling system                       *
 *                                                                                             *
 *    This resets everything except for the tree structure.  All of the timing data is reset.  *
 *=============================================================================================*/
void    CProfileManager::Reset( void )
{
        gProfileClock.reset();
        int threadIndex = btQuickprofGetCurrentThreadIndex2();
        if ((threadIndex<0) || threadIndex >= BT_QUICKPROF_MAX_THREAD_COUNT)
                return;
        gRoots[threadIndex].Reset();
        gRoots[threadIndex].Call();
        FrameCounter = 0;
        Profile_Get_Ticks(&ResetTime);
}
 
 
/***********************************************************************************************
 * CProfileManager::Increment_Frame_Counter -- Increment the frame counter                    *
 *=============================================================================================*/
void CProfileManager::Increment_Frame_Counter( void )
{
        FrameCounter++;
}
 
 
/***********************************************************************************************
 * CProfileManager::Get_Time_Since_Reset -- returns the elapsed time since last reset         *
 *=============================================================================================*/
float CProfileManager::Get_Time_Since_Reset( void )
{
        unsigned long int time;
        Profile_Get_Ticks(&time);
        time -= ResetTime;
        return (float)time / Profile_Get_Tick_Rate();
}
 
#include <stdio.h>
 
void    CProfileManager::dumpRecursive(CProfileIterator* profileIterator, int spacing)
{
        profileIterator->First();
        if (profileIterator->Is_Done())
                return;
 
        float accumulated_time=0,parent_time = profileIterator->Is_Root() ? CProfileManager::Get_Time_Since_Reset() : profileIterator->Get_Current_Parent_Total_Time();
        int i;
        int frames_since_reset = CProfileManager::Get_Frame_Count_Since_Reset();
        for (i=0;i<spacing;i++) printf(".");
        printf("----------------------------------\n");
        for (i=0;i<spacing;i++) printf(".");
        printf("Profiling: %s (total running time: %.3f ms) ---\n",     profileIterator->Get_Current_Parent_Name(), parent_time );
        float totalTime = 0.f;
 
 
        int numChildren = 0;
 
        for (i = 0; !profileIterator->Is_Done(); i++,profileIterator->Next())
        {
                numChildren++;
                float current_total_time = profileIterator->Get_Current_Total_Time();
                accumulated_time += current_total_time;
                float fraction = parent_time > SIMD_EPSILON ? (current_total_time / parent_time) * 100 : 0.f;
                {
                        int i;  for (i=0;i<spacing;i++) printf(".");
                }
                printf("%d -- %s (%.2f %%) :: %.3f ms / frame (%d calls)\n",i, profileIterator->Get_Current_Name(), fraction,(current_total_time / (double)frames_since_reset),profileIterator->Get_Current_Total_Calls());
                totalTime += current_total_time;
                //recurse into children
        }
 
        if (parent_time < accumulated_time)
        {
                //printf("what's wrong\n");
        }
        for (i=0;i<spacing;i++) printf(".");
        printf("%s (%.3f %%) :: %.3f ms\n", "Unaccounted:",parent_time > SIMD_EPSILON ? ((parent_time - accumulated_time) / parent_time) * 100 : 0.f, parent_time - accumulated_time);
 
        for (i=0;i<numChildren;i++)
        {
                profileIterator->Enter_Child(i);
                dumpRecursive(profileIterator,spacing+3);
                profileIterator->Enter_Parent();
        }
}
 
 
 
void    CProfileManager::dumpAll()
{
        CProfileIterator* profileIterator = 0;
        profileIterator = CProfileManager::Get_Iterator();
 
        dumpRecursive(profileIterator,0);
 
        CProfileManager::Release_Iterator(profileIterator);
}
 
 
 
 
unsigned int btQuickprofGetCurrentThreadIndex2()
{
#if BT_THREADSAFE
    return btGetCurrentThreadIndex();
#else // #if BT_THREADSAFE
        const unsigned int kNullIndex = ~0U;
#ifdef _WIN32
    #if defined(__MINGW32__) || defined(__MINGW64__)
        static __thread unsigned int sThreadIndex = kNullIndex;
    #else
        __declspec( thread ) static unsigned int sThreadIndex = kNullIndex;
    #endif
#else
#ifdef __APPLE__
        #if TARGET_OS_IPHONE
                unsigned int sThreadIndex = 0;
                return -1;
        #else
                static __thread unsigned int sThreadIndex = kNullIndex;
        #endif
#else//__APPLE__
#if __linux__
        static __thread unsigned int sThreadIndex = kNullIndex;
#else
        unsigned int sThreadIndex = 0;
        return -1;
#endif
#endif//__APPLE__
        
#endif
        static int gThreadCounter=0;
 
        if ( sThreadIndex == kNullIndex )
        {
                sThreadIndex = gThreadCounter++;
        }
        return sThreadIndex;
#endif // #else // #if BT_THREADSAFE
}
 
void    btEnterProfileZoneDefault(const char* name)
{
        CProfileManager::Start_Profile( name ); 
}
void    btLeaveProfileZoneDefault()
{
        CProfileManager::Stop_Profile(); 
}
 
 
#else
void    btEnterProfileZoneDefault(const char* name)
{
}
void    btLeaveProfileZoneDefault()
{
}
#endif //BT_NO_PROFILE
 
 
 
 
 
static btEnterProfileZoneFunc* bts_enterFunc = btEnterProfileZoneDefault;
static btLeaveProfileZoneFunc* bts_leaveFunc = btLeaveProfileZoneDefault;
 
void btEnterProfileZone(const char* name)
{
        (bts_enterFunc)(name);
}
void btLeaveProfileZone()
{
        (bts_leaveFunc)();
}
 
btEnterProfileZoneFunc* btGetCurrentEnterProfileZoneFunc()
{
        return bts_enterFunc ;
}
btLeaveProfileZoneFunc* btGetCurrentLeaveProfileZoneFunc()
{
        return bts_leaveFunc;
}
 
 
void btSetCustomEnterProfileZoneFunc(btEnterProfileZoneFunc* enterFunc)
{
        bts_enterFunc = enterFunc;
}
void btSetCustomLeaveProfileZoneFunc(btLeaveProfileZoneFunc* leaveFunc)
{
        bts_leaveFunc = leaveFunc;
}
 
CProfileSample::CProfileSample( const char * name )
{ 
        btEnterProfileZone(name);
}
 
CProfileSample::~CProfileSample( void )                                  
{ 
        btLeaveProfileZone();
}