diff options
Diffstat (limited to 'src/pulsecore/core-rtclock.c')
-rw-r--r-- | src/pulsecore/core-rtclock.c | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/src/pulsecore/core-rtclock.c b/src/pulsecore/core-rtclock.c index 3b3e3a64..4fe0a47b 100644 --- a/src/pulsecore/core-rtclock.c +++ b/src/pulsecore/core-rtclock.c @@ -33,6 +33,12 @@ #include <sys/prctl.h> #endif +#ifdef OS_IS_DARWIN +#include <CoreServices/CoreServices.h> +#include <mach/mach.h> +#include <mach/mach_time.h> +#endif + #include <pulse/timeval.h> #include <pulsecore/macro.h> #include <pulsecore/core-error.h> @@ -47,7 +53,8 @@ pa_usec_t pa_rtclock_age(const struct timeval *tv) { } struct timeval *pa_rtclock_get(struct timeval *tv) { -#ifdef HAVE_CLOCK_GETTIME + +#if defined(HAVE_CLOCK_GETTIME) struct timespec ts; #ifdef CLOCK_MONOTONIC @@ -59,7 +66,7 @@ struct timeval *pa_rtclock_get(struct timeval *tv) { no_monotonic = TRUE; if (no_monotonic) -#endif +#endif /* CLOCK_MONOTONIC */ pa_assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); pa_assert(tv); @@ -69,7 +76,30 @@ struct timeval *pa_rtclock_get(struct timeval *tv) { return tv; -#else /* HAVE_CLOCK_GETTIME */ +#elif defined(OS_IS_DARWIN) + static mach_timebase_info_data_t tbi; + uint64_t nticks; + uint64_t time_nsec; + + /* Refer Apple ADC QA1398 + Also: http://devworld.apple.com/documentation/Darwin/Conceptual/KernelProgramming/services/services.html + + Note: argument is timespec NOT timeval (timespec uses nsec, timeval uses usec) + */ + + /* try and be a mite efficient - maybe I should keep the N/D as a float !? */ + if (tbi.denom == 0) + mach_timebase_info(&tbi); + + nticks = mach_absolute_time(); + time_nsec = nticks * tbi.numer / tbi.denom; // see above + + tv->tv_sec = time_nsec / PA_NSEC_PER_SEC; + tv->tv_usec = time_nsec / PA_NSEC_PER_USEC; + + return tv; + +#else /* OS_IS_DARWIN */ return pa_gettimeofday(tv); @@ -77,19 +107,30 @@ struct timeval *pa_rtclock_get(struct timeval *tv) { } pa_bool_t pa_rtclock_hrtimer(void) { -#ifdef HAVE_CLOCK_GETTIME + +#if defined(HAVE_CLOCK_GETTIME) struct timespec ts; #ifdef CLOCK_MONOTONIC + if (clock_getres(CLOCK_MONOTONIC, &ts) >= 0) return ts.tv_sec == 0 && ts.tv_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC); -#endif +#endif /* CLOCK_MONOTONIC */ pa_assert_se(clock_getres(CLOCK_REALTIME, &ts) == 0); return ts.tv_sec == 0 && ts.tv_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC); -#else /* HAVE_CLOCK_GETTIME */ +#elif defined (OS_IS_DARWIN) + mach_timebase_info_data_t tbi; + uint64_t time_nsec; + + mach_timebase_info(&tbi); + /* nsec = nticks * (N/D) - we want 1 tick == resolution !? */ + time_nsec = tbi.numer / tbi.denom; + return time_nsec <= (long) (PA_HRTIMER_THRESHOLD_USEC*PA_NSEC_PER_USEC); + +#else /* OS_IS_DARWIN */ return FALSE; #endif @@ -98,6 +139,7 @@ pa_bool_t pa_rtclock_hrtimer(void) { #define TIMER_SLACK_NS (int) ((500 * PA_NSEC_PER_USEC)) void pa_rtclock_hrtimer_enable(void) { + #ifdef PR_SET_TIMERSLACK int slack_ns; @@ -132,6 +174,8 @@ struct timeval* pa_rtclock_from_wallclock(struct timeval *tv) { pa_assert(tv); + /* pa_timeval_sub() saturates on underflow! */ + if (pa_timeval_cmp(&wc_now, tv) < 0) pa_timeval_add(&rt_now, pa_timeval_diff(tv, &wc_now)); else @@ -144,13 +188,29 @@ struct timeval* pa_rtclock_from_wallclock(struct timeval *tv) { } pa_usec_t pa_timespec_load(const struct timespec *ts) { - pa_assert(ts); + + if (PA_UNLIKELY(!ts)) + return PA_USEC_INVALID; return (pa_usec_t) ts->tv_sec * PA_USEC_PER_SEC + (pa_usec_t) ts->tv_nsec / PA_NSEC_PER_USEC; } +struct timespec* pa_timespec_store(struct timespec *ts, pa_usec_t v) { + pa_assert(ts); + + if (PA_UNLIKELY(v == PA_USEC_INVALID)) { + ts->tv_sec = PA_INT_TYPE_MAX(time_t); + ts->tv_nsec = (long) (PA_NSEC_PER_SEC-1); + return NULL; + } + + ts->tv_sec = (time_t) (v / PA_USEC_PER_SEC); + ts->tv_nsec = (long) ((v % PA_USEC_PER_SEC) * PA_NSEC_PER_USEC); + + return ts; +} static struct timeval* wallclock_from_rtclock(struct timeval *tv) { @@ -162,6 +222,8 @@ static struct timeval* wallclock_from_rtclock(struct timeval *tv) { pa_assert(tv); + /* pa_timeval_sub() saturates on underflow! */ + if (pa_timeval_cmp(&rt_now, tv) < 0) pa_timeval_add(&wc_now, pa_timeval_diff(tv, &rt_now)); else |