[osx] Remove incorrect calculations for timer_getoverrun

This commit is contained in:
Scott Shambarger 2017-01-14 23:29:07 -05:00
parent bb68d59a6e
commit 879d9a80aa

View File

@ -998,9 +998,6 @@ clock_getres(clockid_t clock_id, struct timespec *res) {
#include <sys/time.h> /* ITIMER_REAL */
static uint64_t timer_interval;
static struct timespec timer_expire;
int
timer_create(clockid_t clock_id, void *sevp, timer_t *timer_id) {
@ -1011,8 +1008,6 @@ timer_create(clockid_t clock_id, void *sevp, timer_t *timer_id) {
/* setitimer only supports one timer */
*timer_id = 0;
timer_expire.tv_sec = 0;
timer_expire.tv_nsec = 0;
return 0;
}
@ -1027,9 +1022,6 @@ timer_delete(timer_t timer_id) {
memset(&timerval, 0, sizeof(struct itimerval));
timer_expire.tv_sec = 0;
timer_expire.tv_nsec = 0;
return setitimer(ITIMER_REAL, &timerval, NULL);
}
@ -1042,25 +1034,6 @@ timer_settime(timer_t timer_id, int flags, const struct itimerspec *tp,
if (timer_id != 0 || ! tp || old)
return -1;
if (tp->it_value.tv_sec || tp->it_value.tv_nsec) {
/* calc expire */
if (clock_gettime(CLOCK_MONOTONIC, &timer_expire))
return -1;
timer_expire.tv_sec += tp->it_value.tv_sec;
timer_expire.tv_nsec += tp->it_value.tv_nsec;
if (timer_expire.tv_nsec >= 1e9) {
timer_expire.tv_sec++;
timer_expire.tv_nsec -= 1e9;
}
/* record the interval */
timer_interval = tp->it_interval.tv_sec * 1e9;
timer_interval += tp->it_interval.tv_nsec;
}
else {
timer_expire.tv_sec = 0;
timer_expire.tv_nsec = 0;
}
TIMESPEC_TO_TIMEVAL(&(tv.it_value), &(tp->it_value));
TIMESPEC_TO_TIMEVAL(&(tv.it_interval), &(tp->it_interval));
@ -1070,27 +1043,9 @@ timer_settime(timer_t timer_id, int flags, const struct itimerspec *tp,
int
timer_getoverrun(timer_t timer_id) {
struct timespec now;
int64_t diff;
if (timer_id != 0)
return -1;
if (timer_expire.tv_sec == 0 && timer_expire.tv_nsec == 0)
return 0;
if (timer_interval == 0)
return 0;
/* calc how much time has elapsed since expiration */
if (clock_gettime(CLOCK_MONOTONIC, &now))
return -1;
diff = (now.tv_sec - timer_expire.tv_sec) * 1e9;
diff += now.tv_nsec - now.tv_nsec;
if (diff < 0)
return 0;
return (int)(diff / timer_interval);
/* since we don't know if there have been signals that weren't delivered,
assume none */
return 0;
}
#endif /* HAVE_TIMER_SETTIME */