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Set high resolution timing on windows within the cgsleep functions.

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This commit is contained in:
Con Kolivas 2013-08-18 11:39:09 +10:00
parent e784b23004
commit 8114473228
1 changed files with 21 additions and 12 deletions
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33
util.c
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@ -890,12 +890,18 @@ void cgsleep_ms(int ms)
struct timespec ts_start, ts_end;
int ret;
#ifdef WIN32
timeBeginPeriod(1);
#endif
clock_gettime(CLOCK_MONOTONIC, &ts_start);
ms_to_timespec(&ts_end, ms);
timeraddspec(&ts_end, &ts_start);
do {
ret = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts_end, NULL);
} while (ret == EINTR);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
void cgsleep_us(int64_t us)
@ -903,12 +909,18 @@ void cgsleep_us(int64_t us)
struct timespec ts_start, ts_end;
int ret;
#ifdef WIN32
timeBeginPeriod(1);
#endif
clock_gettime(CLOCK_MONOTONIC, &ts_start);
us_to_timespec(&ts_end, us);
timeraddspec(&ts_end, &ts_start);
do {
ret = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts_end, NULL);
} while (ret == EINTR);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
/* Reentrant version of cgsleep functions allow start time to be set separately
@ -916,6 +928,9 @@ void cgsleep_us(int64_t us)
* counted in the sleep. */
void cgsleep_prepare_r(struct timespec *ts_start)
{
#ifdef WIN32
timeBeginPeriod(1);
#endif
clock_gettime(CLOCK_MONOTONIC, ts_start);
}
@ -929,6 +944,9 @@ void cgsleep_ms_r(struct timespec *ts_start, int ms)
do {
ret = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts_end, NULL);
} while (ret == EINTR);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
void cgsleep_us_r(struct timespec *ts_start, int us)
@ -941,31 +959,22 @@ void cgsleep_us_r(struct timespec *ts_start, int us)
do {
ret = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts_end, NULL);
} while (ret == EINTR);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
/* Provide a ms based sleep that uses nanosleep to avoid poor usleep accuracy
* on SMP machines */
void nmsleep(unsigned int msecs)
{
#ifdef WIN32
timeBeginPeriod(1);
#endif
cgsleep_ms((int)msecs);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
/* Same for usecs */
void nusleep(unsigned int usecs)
{
#ifdef WIN32
timeBeginPeriod(1);
#endif
cgsleep_us((int64_t)usecs);
#ifdef WIN32
timeEndPeriod(1);
#endif
}
/* Returns the microseconds difference between end and start times as a double */