Add sem_timewait() and fix sem_wait()'s handling of signals, so

that it resumes waiting unless the thread was canceled.  As part
of this, change the internal _sem_wait() function to return zero
on success and an errno value on failure instead of 1 on success
and zero on failure.

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/libpthread/include/semaphore.h b/lib/libpthread/include/semaphore.h
index 4735f9c29f9..08d659b3854 100644
--- a/lib/libpthread/include/semaphore.h
+++ b/lib/libpthread/include/semaphore.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: semaphore.h,v 1.3 2002/02/16 21:27:25 millert Exp $	*/
+/*	$OpenBSD: semaphore.h,v 1.4 2012/03/03 10:02:26 guenther Exp $	*/
 
 /* semaphore.h: POSIX 1003.1b semaphores */
 
@@ -58,6 +58,7 @@ sem_t  *sem_open(const char *, int, ...);
 int	sem_close(sem_t *);
 int	sem_unlink(const char *);
 int	sem_wait(sem_t *);
+int	sem_timedwait(sem_t *, const struct timespec *);
 int	sem_trywait(sem_t *);
 int	sem_post(sem_t *);
 int	sem_getvalue(sem_t *, int *);