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revert some more spin optimizations that turned out to be pessimizations
[oweals/musl.git]
/
src
/
thread
/
sem_timedwait.c
diff --git
a/src/thread/sem_timedwait.c
b/src/thread/sem_timedwait.c
index e6c2495af75aaf2205b07068d0eea6ee43e8511b..11a017005fc09df08502833431506b2f4e51795f 100644
(file)
--- a/
src/thread/sem_timedwait.c
+++ b/
src/thread/sem_timedwait.c
@@
-8,11
+8,19
@@
int sem_timedwait(sem_t *sem, const struct timespec *at)
for (;;) {
if (a_fetch_add(sem->__val, -1) > 0) return 0;
val = a_fetch_add(sem->__val, 1)+1;
for (;;) {
if (a_fetch_add(sem->__val, -1) > 0) return 0;
val = a_fetch_add(sem->__val, 1)+1;
+ if (val==1) __wake(sem->__val, 1, 0);
+ if (at && at->tv_nsec >= 1000000000UL) {
+ errno = EINVAL;
+ return -1;
+ }
CANCELPT_BEGIN;
if (val <= 0 && __timedwait(sem->__val, val, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
errno = ETIMEDOUT;
CANCELPT_BEGIN;
if (val <= 0 && __timedwait(sem->__val, val, CLOCK_REALTIME, at, 0) == ETIMEDOUT) {
errno = ETIMEDOUT;
+ CANCELPT_TRY;
+ CANCELPT_END;
return -1;
}
return -1;
}
+ CANCELPT_TRY;
CANCELPT_END;
}
}
CANCELPT_END;
}
}