diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/daemon/main.c | 2 | ||||
-rw-r--r-- | src/pulsecore/rtclock.c | 26 | ||||
-rw-r--r-- | src/pulsecore/rtclock.h | 1 |
3 files changed, 29 insertions, 0 deletions
diff --git a/src/daemon/main.c b/src/daemon/main.c index 08f65e6c..b01689f8 100644 --- a/src/daemon/main.c +++ b/src/daemon/main.c @@ -885,6 +885,8 @@ int main(int argc, char *argv[]) { else pa_log_info(_("Dude, your kernel stinks! The chef's recommendation today is Linux with high-resolution timers enabled!")); + pa_rtclock_hrtimer_enable(); + #ifdef SIGRTMIN /* Valgrind uses SIGRTMAX. To easy debugging we don't use it here */ pa_rtsig_configure(SIGRTMIN, SIGRTMAX-1); diff --git a/src/pulsecore/rtclock.c b/src/pulsecore/rtclock.c index f33de830..5fc6da2b 100644 --- a/src/pulsecore/rtclock.c +++ b/src/pulsecore/rtclock.c @@ -27,9 +27,12 @@ #include <stddef.h> #include <time.h> #include <sys/time.h> +#include <sys/prctl.h> +#include <errno.h> #include <pulse/timeval.h> #include <pulsecore/macro.h> +#include <pulsecore/core-error.h> #include "rtclock.h" @@ -89,6 +92,29 @@ pa_bool_t pa_rtclock_hrtimer(void) { #endif } +void pa_rtclock_hrtimer_enable(void) { +#ifdef PR_SET_TIMERSLACK + int slack_ns; + + if ((slack_ns = prctl(PR_GET_TIMERSLACK, 0, 0, 0, 0)) < 0) { + pa_log_info("PR_GET_TIMERSLACK/PR_SET_TIMERSLACK not supported."); + return; + } + + pa_log_debug("Timer slack set to %i us.", slack_ns/1000); + + slack_ns = 500000000; + + pa_log_debug("Setting timer slack to %i us.", slack_ns/1000); + + if (prctl(PR_SET_TIMERSLACK, slack_ns, 0, 0, 0) < 0) { + pa_log_warn("PR_SET_TIMERSLACK failed: %s", pa_cstrerror(errno)); + return; + } + +#endif +} + pa_usec_t pa_rtclock_usec(void) { struct timeval tv; diff --git a/src/pulsecore/rtclock.h b/src/pulsecore/rtclock.h index aa2cdace..281461df 100644 --- a/src/pulsecore/rtclock.h +++ b/src/pulsecore/rtclock.h @@ -35,6 +35,7 @@ pa_usec_t pa_rtclock_usec(void); pa_usec_t pa_rtclock_age(const struct timeval *tv); pa_bool_t pa_rtclock_hrtimer(void); +void pa_rtclock_hrtimer_enable(void); /* timer with a resolution better than this are considered high-resolution */ #define PA_HRTIMER_THRESHOLD_USEC 10 |