/// Returns the time in us since the last call to reset or since
/// the Clock was created.
unsigned long long int b3Clock::getTimeMicroseconds()
{
#ifdef B3_USE_WINDOWS_TIMERS
//see https://msdn.microsoft.com/en-us/library/windows/desktop/dn553408(v=vs.85).aspx
LARGE_INTEGER currentTime, elapsedTime;
QueryPerformanceCounter(¤tTime);
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(¤tTime, 0);
return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000000 +
(currentTime.tv_usec - m_data->mStartTime.tv_usec);
#endif//__CELLOS_LV2__
#endif
}
/// Returns the time in ms since the last call to reset or since
/// the b3Clock was created.
unsigned long int b3Clock::getTimeMilliseconds()
{
#ifdef B3_USE_WINDOWS_TIMERS
LARGE_INTEGER currentTime;
QueryPerformanceCounter(¤tTime);
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(¤tTime, 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::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(¤tTime);
elapsedTime.QuadPart = currentTime.QuadPart -
m_data->mStartTime.QuadPart;
elapsedTime.QuadPart *= 1e9;
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(¤tTime, 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
}
/// Returns the time in us since the last call to reset or since
/// the Clock was created.
unsigned long int btClock::getTimeMicroseconds()
{
#ifdef BT_USE_WINDOWS_TIMERS
LARGE_INTEGER currentTime;
QueryPerformanceCounter(¤tTime);
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);
// Check for unexpected leaps in the Win32 performance counter.
// (This is caused by unexpected data across the PCI to ISA
// bridge, aka south bridge. See Microsoft KB274323.)
unsigned long elapsedTicks = GetTickCount() - m_data->mStartTick;
signed long msecOff = (signed long)(msecTicks - elapsedTicks);
if (msecOff < -100 || msecOff > 100)
{
// Adjust the starting time forwards.
LONGLONG msecAdjustment = mymin(msecOff *
m_data->mClockFrequency.QuadPart / 1000, elapsedTime -
m_data->mPrevElapsedTime);
m_data->mStartTime.QuadPart += msecAdjustment;
elapsedTime -= msecAdjustment;
}
// Store the current elapsed time for adjustments next time.
m_data->mPrevElapsedTime = elapsedTime;
// Convert to microseconds.
unsigned long usecTicks = (unsigned long)(1000000 * elapsedTime /
m_data->mClockFrequency.QuadPart);
return usecTicks;
#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);
#elif __DUETTO__
// We don't have microsecond timing using Date
double currentTime = client::Date.now();
return (currentTime - m_data->mStartTime) * 1000;
#else
struct timeval currentTime;
gettimeofday(¤tTime, 0);
return (currentTime.tv_sec - m_data->mStartTime.tv_sec) * 1000000 +
(currentTime.tv_usec - m_data->mStartTime.tv_usec);
#endif//__CELLOS_LV2__
#endif
}
static float GetMsPerCycle()
{
#if defined __linux__ || defined __APPLE__
return 1.0f;
#elif defined _WIN32
LARGE_INTEGER tmp;
QueryPerformanceFrequency(&tmp);
return 1e3f / tmp.QuadPart;
#elif defined __CELLOS_LV2__
return 1e3f / sys_time_get_timebase_frequency();
#else
return 1.0f;
#endif
}
static uint64 calcStampsPerSecond()
{
return sys_time_get_timebase_frequency();
}
