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authorRich Felker <dalias@aerifal.cx>2011-09-25 02:56:01 -0400
committerRich Felker <dalias@aerifal.cx>2011-09-25 02:56:01 -0400
commit09ec0f3aab4df2993f4a2a992529655f6c4f7a70 (patch)
tree4109f54cb4bd53b6e21086bf905d53aa19fe7a28 /src/thread/pthread_cond_broadcast.c
parentcba4e1c0a3423ed07ef5c79f6e29360996f32fd7 (diff)
downloadmusl-09ec0f3aab4df2993f4a2a992529655f6c4f7a70.tar.gz
fix logic for when wakeup is not desired on cond bcast
somehow i forgot that normal-type mutexes don't store the owner tid.
Diffstat (limited to 'src/thread/pthread_cond_broadcast.c')
-rw-r--r--src/thread/pthread_cond_broadcast.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/thread/pthread_cond_broadcast.c b/src/thread/pthread_cond_broadcast.c
index 3daa7817..7e5ea91c 100644
--- a/src/thread/pthread_cond_broadcast.c
+++ b/src/thread/pthread_cond_broadcast.c
@@ -37,10 +37,11 @@ int pthread_cond_broadcast(pthread_cond_t *c)
a_fetch_add(&m->_m_waiters, -w);
}
- /* Perform the futex requeue, waking one waiter if and only if
- * the calling thread does not hold the mutex. */
+ /* Perform the futex requeue, waking one waiter unless we know
+ * that the calling thread holds the mutex. */
__syscall(SYS_futex, &c->_c_block, FUTEX_REQUEUE,
- m->_m_lock!=pthread_self()->tid, INT_MAX, &m->_m_lock);
+ !m->_m_type || (m->_m_lock&INT_MAX)!=pthread_self()->tid,
+ INT_MAX, &m->_m_lock);
unlock(c);
return 0;