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fix sem_timedwait bug introduced in timedwait unification
author
Rich Felker
<dalias@aerifal.cx>
Wed, 3 Aug 2011 01:15:20 +0000
(21:15 -0400)
committer
Rich Felker
<dalias@aerifal.cx>
Wed, 3 Aug 2011 01:15:20 +0000
(21:15 -0400)
this dec used to be performed by the cancellation handler, which was
called when popped.
src/thread/sem_timedwait.c
patch
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diff --git
a/src/thread/sem_timedwait.c
b/src/thread/sem_timedwait.c
index
4e12389
..
64b4342
100644
(file)
--- a/
src/thread/sem_timedwait.c
+++ b/
src/thread/sem_timedwait.c
@@
-13,6
+13,7
@@
int sem_timedwait(sem_t *sem, const struct timespec *at)
a_inc(sem->__val+1);
a_cas(sem->__val, 0, -1);
r = __timedwait(sem->__val, -1, CLOCK_REALTIME, at, cleanup, sem->__val+1, 0);
a_inc(sem->__val+1);
a_cas(sem->__val, 0, -1);
r = __timedwait(sem->__val, -1, CLOCK_REALTIME, at, cleanup, sem->__val+1, 0);
+ a_dec(sem->__val+1);
if (r) {
errno = r;
return -1;
if (r) {
errno = r;
return -1;