mm_timeval_t
mm_clock_gettime(mm_clock_t clock)
{
if (clock == MM_CLOCK_REALTIME)
return mm_clock_gettime_realtime();
else
return mm_clock_gettime_monotonic();
}
mm_event_listener_timedwait(struct mm_event_listener *listener, mm_ring_seqno_t stamp,
mm_timeout_t timeout)
{
ENTER();
#if ENABLE_LINUX_FUTEX
struct timespec ts;
ts.tv_sec = (timeout / 1000000);
ts.tv_nsec = (timeout % 1000000) * 1000;
// Publish the log before a sleep.
mm_log_relay();
int rc = mm_syscall_4(SYS_futex,
mm_event_listener_futex(listener),
FUTEX_WAIT_PRIVATE, stamp, (uintptr_t) &ts);
if (rc != 0 && errno != EWOULDBLOCK && errno != ETIMEDOUT)
mm_fatal(errno, "futex");
#elif ENABLE_MACH_SEMAPHORE
(void) stamp;
mach_timespec_t ts;
ts.tv_sec = (timeout / 1000000);
ts.tv_nsec = (timeout % 1000000) * 1000;
// Publish the log before a sleep.
mm_log_relay();
kern_return_t r = semaphore_timedwait(listener->semaphore, ts);
if (r != KERN_SUCCESS && unlikely(r != KERN_OPERATION_TIMED_OUT))
mm_fatal(0, "semaphore_timedwait");
#else
mm_timeval_t time = mm_clock_gettime_realtime() + timeout;
mm_thread_monitor_lock(&listener->monitor);
#if ENABLE_NOTIFY_STAMP
if (stamp == mm_event_listener_enqueue_stamp(listener))
mm_thread_monitor_timedwait(&listener->monitor, time);
#else
if (listener->notify_stamp == stamp)
mm_thread_monitor_timedwait(&listener->monitor, time);
#endif
mm_thread_monitor_unlock(&listener->monitor);
#endif
LEAVE();
}