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Diffstat (limited to 'src/thread/pthread_cond_broadcast.c')
-rw-r--r--src/thread/pthread_cond_broadcast.c39
1 files changed, 4 insertions, 35 deletions
diff --git a/src/thread/pthread_cond_broadcast.c b/src/thread/pthread_cond_broadcast.c
index 18e778f3..69f840fb 100644
--- a/src/thread/pthread_cond_broadcast.c
+++ b/src/thread/pthread_cond_broadcast.c
@@ -1,43 +1,12 @@
#include "pthread_impl.h"
+int __private_cond_signal(pthread_cond_t *, int);
+
int pthread_cond_broadcast(pthread_cond_t *c)
{
- pthread_mutex_t *m;
-
+ if (!c->_c_shared) return __private_cond_signal(c, -1);
if (!c->_c_waiters) return 0;
-
a_inc(&c->_c_seq);
-
- /* If cond var is process-shared, simply wake all waiters. */
- if (c->_c_mutex == (void *)-1) {
- __wake(&c->_c_seq, -1, 0);
- return 0;
- }
-
- /* Block waiters from returning so we can use the mutex. */
- while (a_swap(&c->_c_lock, 1))
- __wait(&c->_c_lock, &c->_c_lockwait, 1, 1);
- if (!c->_c_waiters)
- goto out;
- m = c->_c_mutex;
-
- /* Move waiter count to the mutex */
- a_fetch_add(&m->_m_waiters, c->_c_waiters2);
- c->_c_waiters2 = 0;
-
- /* Perform the futex requeue, waking one waiter unless we know
- * that the calling thread holds the mutex. */
- int wake_cnt = !(m->_m_type & 3)
- || (m->_m_lock&INT_MAX)!=__pthread_self()->tid;
- if (m->_m_type & 128) wake_cnt = INT_MAX;
- __syscall(SYS_futex, &c->_c_seq, FUTEX_REQUEUE | 128,
- wake_cnt, INT_MAX, &m->_m_lock) != -EINVAL ||
- __syscall(SYS_futex, &c->_c_seq, FUTEX_REQUEUE,
- wake_cnt, INT_MAX, &m->_m_lock);
-
-out:
- a_store(&c->_c_lock, 0);
- if (c->_c_lockwait) __wake(&c->_c_lock, 1, 1);
-
+ __wake(&c->_c_seq, -1, 0);
return 0;
}