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| author |   tedu <tedu@openbsd.org> | 2005-12-14 04:14:19 +0000 |
|---|---|---|
| committer | tedu <tedu@openbsd.org> | 2005-12-14 04:14:19 +0000 |
| commit | d6be970d7b2490f227132429134f3d9a2a947c35 (patch) | |
| tree | b80848054aef99b722f1ef32c293149703915b72 /lib/librthread/rthread_sync.c | |
| parent | change wait message for thrsleep to "thrsleep" (diff) | |
| download | wireguard-openbsd-d6be970d7b2490f227132429134f3d9a2a947c35.tar.xz wireguard-openbsd-d6be970d7b2490f227132429134f3d9a2a947c35.zip | |
check for waiters when destroying a mutex or semaphore
Diffstat (limited to 'lib/librthread/rthread_sync.c')
| -rw-r--r-- | lib/librthread/rthread_sync.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/lib/librthread/rthread_sync.c b/lib/librthread/rthread_sync.c index 9911c370c1d..c93ebd82187 100644 --- a/lib/librthread/rthread_sync.c +++ b/lib/librthread/rthread_sync.c @@ -1,4 +1,4 @@ -/* $OpenBSD: rthread_sync.c,v 1.7 2005/12/13 17:22:46 tedu Exp $ */ +/* $OpenBSD: rthread_sync.c,v 1.8 2005/12/14 04:14:19 tedu Exp $ */ /* * Copyright (c) 2004 Ted Unangst <tedu@openbsd.org> * All Rights Reserved. @@ -155,7 +155,14 @@ sem_init(sem_t *semp, int pshared, unsigned int value) int sem_destroy(sem_t *semp) { - /* should check for waiters */ + if (!*semp) + return (EINVAL); + if ((*semp)->waitcount) { +#define MSG "sem_destroy on semaphore with waiters!\n" + write(2, MSG, sizeof(MSG)); +#undef MSG + return (EBUSY); + } free(*semp); *semp = NULL; @@ -233,7 +240,12 @@ int pthread_mutex_destroy(pthread_mutex_t *mutexp) { - /* check for waiters */ + if ((*mutexp) && (*mutexp)->count) { +#define MSG "pthread_mutex_destroy on mutex with waiters!\n" + write(2, MSG, sizeof(MSG)); +#undef MSG + return (EBUSY); + } free((void *)*mutexp); *mutexp = NULL; return (0); |