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only decrease timer slack, never increase

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This commit is contained in:
Lennart Poettering 2009-03-24 20:59:54 +01:00
parent bcbfd5b983
commit e6be9481dc
1 changed files with 10 additions and 6 deletions
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16
src/pulsecore/rtclock.c
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@ -95,6 +95,8 @@ pa_bool_t pa_rtclock_hrtimer(void) {
#endif #endif
} }
#define TIMER_SLACK_NS (int) ((500 * PA_NSEC_PER_USEC))
void pa_rtclock_hrtimer_enable(void) { void pa_rtclock_hrtimer_enable(void) {
#ifdef PR_SET_TIMERSLACK #ifdef PR_SET_TIMERSLACK
int slack_ns; int slack_ns;
@ -104,15 +106,17 @@ void pa_rtclock_hrtimer_enable(void) {
return; return;
} }
pa_log_debug("Timer slack set to %i us.", slack_ns/1000); pa_log_debug("Timer slack is set to %i us.", (int) (slack_ns/PA_NSEC_PER_USEC));
slack_ns = 500000000; if (slack_ns > TIMER_SLACK_NS) {
slack_ns = TIMER_SLACK_NS;
pa_log_debug("Setting timer slack to %i us.", slack_ns/1000); pa_log_debug("Setting timer slack to %i us.", (int) (slack_ns/PA_NSEC_PER_USEC));
if (prctl(PR_SET_TIMERSLACK, slack_ns, 0, 0, 0) < 0) { if (prctl(PR_SET_TIMERSLACK, slack_ns, 0, 0, 0) < 0) {
pa_log_warn("PR_SET_TIMERSLACK failed: %s", pa_cstrerror(errno)); pa_log_warn("PR_SET_TIMERSLACK failed: %s", pa_cstrerror(errno));
return; return;
}
} }
#endif #endif