double Clock::mach_time_to_sec(uint64_t elapsed)
{
if ( sTimebaseInfo.denom == 0 ) {
// initialize (yuk, hope it isn't some stray value)
(void) mach_timebase_info(&sTimebaseInfo);
}
double ms = (double) (elapsed) / 1.0e9;
ms *= sTimebaseInfo.numer / sTimebaseInfo.denom;
return ms;
}
void synctime(void) {
LOG_INFO("Reseting time");
orwl_timebase = 0.0;
orwl_timestart = 0;
mach_timebase_info_data_t tb = { 0 };
mach_timebase_info(&tb);
orwl_timebase = tb.numer;
orwl_timebase /= tb.denom;
orwl_timestart = mach_absolute_time();
LOG_INFO("Time reset!");
return;
}
void timeThis(void) {
#ifdef __APPLE__
static uint64_t stime=0, etime;
mach_timebase_info_data_t info;
uint64_t diff, titm;
if (stime) {
etime = mach_absolute_time();
mach_timebase_info(&info);
diff = (etime - stime) * info.numer / info.denom;
titm = (diff * 100) / insertcnt;
printf("Time spent: %lld (per item %lld.%lld) ns\n", diff, titm / 100, titm % 100);
stime = etime = 0;
} else {
stime = mach_absolute_time();
}
#elif _WIN32
static LONGLONG stime=0, etime;
LONGLONG freq;
uint64_t tmp1, tmp2, diff, titm;
if (stime) {
QueryPerformanceCounter((LARGE_INTEGER*)&etime);
QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
diff = etime - stime;
tmp1 = (diff * 1000000) / freq;
tmp2 = ((diff * 1000000) % freq) * 1000 / freq;
diff = tmp1 * 1000 + tmp2;
titm = (diff * 100) / insertcnt;
printf("Time spent: %lld (per item %lld.%lld) ns\n", diff, titm / 100, titm % 100);
stime = etime = 0;
} else {
QueryPerformanceCounter((LARGE_INTEGER*)&stime);
}
#elif __linux__
static struct timespec stime, etime;
static int started = 0;
uint64_t t0, t1, diff, titm;
if (started) {
clock_gettime(CLOCK_MONOTONIC_RAW, &etime);
t0 = stime.tv_nsec + stime.tv_sec * 1000000000;
t1 = etime.tv_nsec + etime.tv_sec * 1000000000;
diff = t1 - t0;
titm = (diff * 100) / insertcnt;
printf("Time spent: %lld (per item %lld.%lld) ns\n", diff, titm / 100, titm % 100);
started = 0;
} else {
started = 1;
clock_gettime(CLOCK_MONOTONIC_RAW, &stime);
}
#endif
}
/*static*/ int64 Profiler::GetTimerFrequency()
{
#if _IOS
mach_timebase_info_data_t info;
mach_timebase_info(&info);
return 1000000000 * info.numer / info.denom;
#else
LARGE_INTEGER performanceFrequency;
::QueryPerformanceFrequency(&performanceFrequency);
return performanceFrequency.QuadPart;
#endif
}
Stopwatch::Stopwatch()
{
#if defined (TARGET_OS_WINDOWS)
RecalculateFrequency();
#elif defined (TARGET_OS_MACOSX)
mach_timebase_info(&m_timebase);
#endif
/* We start it here for static Stopwatch instances */
/* where it's impractical to do an initial Start() call */
Start();
}
void NaClThreadNiceInit() {
if (mach_timebase_info(&gTimeBase) != KERN_SUCCESS) {
NaClLog(LOG_WARNING, "mach_timebase_info failed\n");
gTimeBase.numer = 1;
gTimeBase.denom = 1;
}
if (gTimeBase.denom == 0) {
NaClLog(LOG_WARNING, "mach_timebase_info returned bogus result\n");
gTimeBase.numer = 1;
gTimeBase.denom = 1;
}
}
void EosTimer::Init()
{
#ifndef WIN32
if(sm_toMS == 0)
{
mach_timebase_info_data_t timeBase;
mach_timebase_info( &timeBase );
sm_toMS = timeBase.numer/static_cast<double>(timeBase.denom);
sm_toMS /= 1000000;
}
#endif
}
static frame_time_t machdep_mach_gettimebase (void)
{
struct mach_timebase_info tbinfo;
mach_timebase_info(&tbinfo);
/* time (in nanosecs) = ticks * tbinfo.numer / tbinfo.numer
*
* Thus we get the number of ticks per second as follows:
*/
return (frame_time_t)(1e9 * tbinfo.denom / tbinfo.numer);
}
double al_time_current_time(void)
{
static dispatch_once_t init_once = 0;
static mach_timebase_info_data_t timebase_info;
dispatch_once(&init_once,
^{
mach_timebase_info((mach_timebase_info_data_t *)&timebase_info);
});
double FTime::Update()
{
#if defined TARGET_OSX
uint64_t now = mach_absolute_time();
uint64_t diff = now - time;
static double conversion = 0.0;
if ( conversion == 0.0 )
{
mach_timebase_info_data_t info;
kern_return_t err = mach_timebase_info( &info );
if( err == 0 )
conversion = 1e-9*(double)info.numer / (double) info.denom;
}
time = now;
last_update_time = (double)(conversion * (double) diff);
#elif defined TARGET_WIN32
LARGE_INTEGER now;
QueryPerformanceCounter(&now);
LARGE_INTEGER diff;
diff.QuadPart = now.QuadPart - time.QuadPart;
static double conversion = 0.0;
if ( conversion == 0.0 )
{
LARGE_INTEGER frequency;
QueryPerformanceFrequency(&frequency);
conversion = 1.0/double(frequency.QuadPart);
}
time.QuadPart = now.QuadPart;
last_update_time = double(now.QuadPart)*conversion;
#else
timespec now;
clock_gettime(CLOCK_REALTIME, &now);
// calculate diff
double diff = now.tv_sec - time.tv_sec;
diff += 1e-9*double(now.tv_nsec - time.tv_nsec);
time = now;
last_update_time = diff;
#endif
return last_update_time;
}
time_t
lgtd_time_monotonic_msecs(void)
{
static mach_timebase_info_data_t timebase = { 0, 0 };
if (timebase.denom == 0) {
mach_timebase_info(&timebase);
}
uint64_t time = mach_absolute_time();
return time * timebase.numer / timebase.denom / MSECS_IN_NSEC;
}
uint64_t tut_get_time()
{
uint64_t t;
static mach_timebase_info_data_t tinfo;
t = mach_absolute_time();
if (tinfo.denom == 0) {
mach_timebase_info(&tinfo);
}
return t * tinfo.numer / tinfo.denom;
}
uint64_t monotonic_nseconds() {
uint64_t c;
static uint8_t i = 0;
static mach_timebase_info_data_t sti;
c = mach_absolute_time();
if (i==0) {
mach_timebase_info(&sti);
i = 1;
}
return c * sti.numer / sti.denom;
}
int get_nanoseconds_since_epoch(void *data, uint64_t *nanoseconds)
{
mach_timebase_info_data_t conversion_factor;
GUARD(mach_timebase_info(&conversion_factor));
*nanoseconds = mach_absolute_time();
*nanoseconds *= conversion_factor.numer;
*nanoseconds /= conversion_factor.denom;
return 0;
}
int clock_gettime(clockid_t clk_id, struct timespec *tp) {
kern_return_t ret;
clock_serv_t clk;
clock_id_t clk_serv_id;
mach_timespec_t tm;
uint64_t start, end, delta, nano;
task_basic_info_data_t tinfo;
task_thread_times_info_data_t ttinfo;
mach_msg_type_number_t tflag;
int retval = -1;
switch (clk_id) {
case CLOCK_REALTIME:
case CLOCK_MONOTONIC:
clk_serv_id = clk_id == CLOCK_REALTIME ? CALENDAR_CLOCK : SYSTEM_CLOCK;
if (KERN_SUCCESS == (ret = host_get_clock_service(mach_host_self(), clk_serv_id, &clk))) {
if (KERN_SUCCESS == (ret = clock_get_time(clk, &tm))) {
tp->tv_sec = tm.tv_sec;
tp->tv_nsec = tm.tv_nsec;
retval = 0;
}
}
if (KERN_SUCCESS != ret) {
errno = EINVAL;
retval = -1;
}
break;
case CLOCK_PROCESS_CPUTIME_ID:
case CLOCK_THREAD_CPUTIME_ID:
start = mach_absolute_time();
if (clk_id == CLOCK_PROCESS_CPUTIME_ID) {
getpid();
} else {
sched_yield();
}
end = mach_absolute_time();
delta = end - start;
if (0 == __clock_gettime_inf.denom) {
mach_timebase_info(&__clock_gettime_inf);
}
nano = delta * __clock_gettime_inf.numer / __clock_gettime_inf.denom;
tp->tv_sec = nano * 1e-9;
tp->tv_nsec = nano - (tp->tv_sec * 1e9);
retval = 0;
break;
default:
errno = EINVAL;
retval = -1;
}
return retval;
}
int os_get_reltime(struct os_reltime *t)
{
#ifndef __MACH__
#if defined(CLOCK_BOOTTIME)
static clockid_t clock_id = CLOCK_BOOTTIME;
#elif defined(CLOCK_MONOTONIC)
static clockid_t clock_id = CLOCK_MONOTONIC;
#else
static clockid_t clock_id = CLOCK_REALTIME;
#endif
struct timespec ts;
int res;
while (1) {
res = clock_gettime(clock_id, &ts);
if (res == 0) {
t->sec = ts.tv_sec;
t->usec = ts.tv_nsec / 1000;
return 0;
}
switch (clock_id) {
#ifdef CLOCK_BOOTTIME
case CLOCK_BOOTTIME:
clock_id = CLOCK_MONOTONIC;
break;
#endif
#ifdef CLOCK_MONOTONIC
case CLOCK_MONOTONIC:
clock_id = CLOCK_REALTIME;
break;
#endif
case CLOCK_REALTIME:
return -1;
}
}
#else /* __MACH__ */
uint64_t abstime, nano;
static mach_timebase_info_data_t info = { 0, 0 };
if (!info.denom) {
if (mach_timebase_info(&info) != KERN_SUCCESS)
return -1;
}
abstime = mach_absolute_time();
nano = (abstime * info.numer) / info.denom;
t->sec = nano / NSEC_PER_SEC;
t->usec = (nano - (((uint64_t) t->sec) * NSEC_PER_SEC)) / NSEC_PER_USEC;
return 0;
#endif /* __MACH__ */
}
int clock_gettime(int clk_id, struct timespec *t) {
mach_timebase_info_data_t timebase;
mach_timebase_info(&timebase);
uint64_t time;
time = mach_absolute_time();
double nseconds = ((double)time * (double)timebase.numer)/((double)timebase.denom);
double seconds = ((double)time * (double)timebase.numer)/((double)timebase.denom * 1e9);
t->tv_sec = seconds;
t->tv_nsec = nseconds;
return 0;
}
float Timer::resolution()
{
static double conversion = 0.0;
if ( conversion == 0.0 )
{
mach_timebase_info_data_t info;
kern_return_t err = mach_timebase_info( &info );
if( err == 0 )
conversion = 1e-9 * (double) info.numer / (double) info.denom;
}
return conversion;
}
uint64_t nn_clock_ms (void)
{
#if defined NN_HAVE_WINDOWS
LARGE_INTEGER tps;
LARGE_INTEGER time;
double tpms;
QueryPerformanceFrequency (&tps);
QueryPerformanceCounter (&time);
tpms = (double) (tps.QuadPart / 1000);
return (uint64_t) (time.QuadPart / tpms);
#elif defined NN_HAVE_OSX
static mach_timebase_info_data_t nn_clock_timebase_info;
uint64_t ticks;
/* If the global timebase info is not initialised yet, init it. */
if (nn_slow (!nn_clock_timebase_info.denom))
mach_timebase_info (&nn_clock_timebase_info);
ticks = mach_absolute_time ();
return ticks * nn_clock_timebase_info.numer /
nn_clock_timebase_info.denom / 1000000;
#elif defined NN_HAVE_CLOCK_MONOTONIC
int rc;
struct timespec tv;
rc = clock_gettime (CLOCK_MONOTONIC, &tv);
errno_assert (rc == 0);
return tv.tv_sec * (uint64_t) 1000 + tv.tv_nsec / 1000000;
#elif defined NN_HAVE_GETHRTIME
return gethrtime () / 1000000;
#else
int rc;
struct timeval tv;
/* Gettimeofday is slow on some systems. Moreover, it's not necessarily
monotonic. Thus, it's used as a last resort mechanism. */
rc = gettimeofday (&tv, NULL);
errno_assert (rc == 0);
return tv.tv_sec * (uint64_t) 1000 + tv.tv_usec / 1000;
#endif
}
// Get current time in microseconds...
UInt64 GetNanoseconds(void)
{
#if defined(OVR_CAPTURE_HAS_MACH_ABSOLUTE_TIME)
// OSX/iOS doesn't have clock_gettime()... but it does have gettimeofday(), or even better mach_absolute_time()
// which is about 50% faster than gettimeofday() and higher precision!
// Only 24.5ns per GetNanoseconds() call! But we can do better...
// It seems that modern Darwin already returns nanoseconds, so numer==denom
// when we test that assumption it brings us down to 16ns per GetNanoseconds() call!!!
// Timed on MacBookPro running OSX.
static mach_timebase_info_data_t info = {0};
if(!info.denom)
mach_timebase_info(&info);
const UInt64 t = mach_absolute_time();
if(info.numer==info.denom)
return t;
return (t * info.numer) / info.denom;
#elif defined(OVR_CAPTURE_HAS_CLOCK_GETTIME)
// 23ns per call on i7 Desktop running Ubuntu 64
// >800ns per call on Galaxy Note 4 running Android 4.3!!!
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
return ((UInt64)tp.tv_sec)*1000000000 + (UInt64)tp.tv_nsec;
#elif defined(OVR_CAPTURE_HAS_GETTIMEOFDAY)
// Just here for reference... this timer is only microsecond level of precision, and >2x slower than the mach timer...
// And on non-mach platforms clock_gettime() is the preferred method...
// 34ns per call on MacBookPro running OSX...
// 23ns per call on i7 Desktop running Ubuntu 64
// >800ns per call on Galaxy Note 4 running Android 4.3!!!
struct timeval tv;
gettimeofday(&tv, 0);
const UInt64 us = ((UInt64)tv.tv_sec)*1000000 + (UInt64)tv.tv_usec;
return us*1000;
#elif defined(OVR_CAPTURE_WINDOWS)
static double tonano = 0.0;
if(!tonano)
{
LARGE_INTEGER f;
QueryPerformanceFrequency(&f);
tonano = 1000000000.0 / f.QuadPart;
}
LARGE_INTEGER c;
QueryPerformanceCounter(&c);
return (UInt64)(c.QuadPart * tonano);
#else
#error Unknown Platform!
#endif
}
uint32_t CpuTicks::now() {
// Initialize the first time CpuTicks::now() is called (See Apple's QA1398).
if (CpuTicks_machTime.denom == 0) {
if (mach_timebase_info(&CpuTicks_machTime) != KERN_SUCCESS)
return 0;
}
// mach_absolute_time() returns nanoseconds, we need just milliseconds.
uint64_t t = mach_absolute_time() / 1000000;
t = t * CpuTicks_machTime.numer / CpuTicks_machTime.denom;
return static_cast<uint32_t>(t & 0xFFFFFFFFU);
}
double OSXTimer::getSecondCoeff()
{
// If this is the first time we've run, get the timebase.
if (mSecondCoeff == 0.0)
{
mach_timebase_info_data_t timebaseInfo;
mach_timebase_info(&timebaseInfo);
mSecondCoeff = timebaseInfo.numer * (1.0 / 1000000000) / timebaseInfo.denom;
}
return mSecondCoeff;
}
void RXTimingUpdateTimebase(void)
{
mach_timebase_info_data_t info;
kern_return_t err = mach_timebase_info(&info);
debug_assert(err == KERN_SUCCESS);
(void)err;
// compute the timebase to seconds scale factor
g_RXTimebase = 1e-9 * (double)info.numer / (double)info.denom;
// compute its inverse to convert from seconds to timebase
g_RX1_Timebase = 1.0 / g_RXTimebase;
}
double BenchSysTimer::endWall() {
uint64_t end_wall = mach_absolute_time();
uint64_t elapsed = end_wall - this->fStartWall;
mach_timebase_info_data_t sTimebaseInfo;
if (KERN_SUCCESS != mach_timebase_info(&sTimebaseInfo)) {
return 0;
} else {
uint64_t elapsedNano = elapsed * sTimebaseInfo.numer
/ sTimebaseInfo.denom;
return elapsedNano / 1000000;
}
}
//-----------------------------------------------------------------------------
uint32_t IPlatformFrame::getTicks ()
{
static struct mach_timebase_info timebaseInfo;
static bool initialized = false;
if (!initialized)
{
initialized = true;
mach_timebase_info (&timebaseInfo);
}
uint64_t absTime = mach_absolute_time ();
double d = (absTime / timebaseInfo.denom) * timebaseInfo.numer; // nano seconds
return static_cast<uint32_t> (d / 1000000);
}
double monotonicallyIncreasingTime()
{
// Based on listing #2 from Apple QA 1398, but modified to be thread-safe.
static mach_timebase_info_data_t timebaseInfo;
static std::once_flag initializeTimerOnceFlag;
std::call_once(initializeTimerOnceFlag, [] {
kern_return_t kr = mach_timebase_info(&timebaseInfo);
ASSERT_UNUSED(kr, kr == KERN_SUCCESS);
ASSERT(timebaseInfo.denom);
});
return (mach_absolute_time() * timebaseInfo.numer) / (1.0e9 * timebaseInfo.denom);
}
static inline void get_nanotime(struct timespec *ts)
{
static struct mach_timebase_info ti;
if (ti.numer == 0)
mach_timebase_info(&ti);
uint64_t abstime = mach_absolute_time();
uint64_t nanoseconds = (abstime * ti.numer) / ti.denom;
ts->tv_sec = nanoseconds / NSEC_PER_SEC;
ts->tv_nsec = nanoseconds % NSEC_PER_SEC;
}
static uint64_t
timer()
{
static mach_timebase_info_data_t sTimebaseInfo;
uint64_t timeNano;
if ( sTimebaseInfo.denom == 0 ) {
(void) mach_timebase_info(&sTimebaseInfo);
}
timeNano = mach_absolute_time();
return (uint64_t) (timeNano * sTimebaseInfo.numer) / (sTimebaseInfo.denom * 1000000);
}
double Timer::getTimerPeriod()
{
#if defined(LOVE_MACOSX) || defined(LOVE_IOS)
mach_timebase_info_data_t info;
mach_timebase_info(&info);
return (double) info.numer / (double) info.denom / 1000000000.0;
#elif defined(LOVE_WINDOWS)
LARGE_INTEGER temp;
if (QueryPerformanceFrequency(&temp) != 0 && temp.QuadPart != 0)
return 1.0 / (double) temp.QuadPart;
#endif
return 0;
}
double subtractTimes( uint64_t endTime, uint64_t startTime )
{
uint64_t difference = endTime - startTime;
static double conversion = 0.0;
if ( conversion == 0.0 )
{
mach_timebase_info_data_t info;
kern_return_t err = mach_timebase_info( &info );
if( err == 0 )
conversion = 1e-9 * (double) info.numer / (double) info.denom;
}
return conversion * (double) difference;
}