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overhaul clone syscall wrapping
[musl]
/
src
/
thread
/
pthread_mutex_unlock.c
diff --git
a/src/thread/pthread_mutex_unlock.c
b/src/thread/pthread_mutex_unlock.c
index
6c4d7f2
..
0f4a5e6
100644
(file)
--- a/
src/thread/pthread_mutex_unlock.c
+++ b/
src/thread/pthread_mutex_unlock.c
@@
-3,6
+3,8
@@
int pthread_mutex_unlock(pthread_mutex_t *m)
{
pthread_t self;
int pthread_mutex_unlock(pthread_mutex_t *m)
{
pthread_t self;
+ int waiters = m->_m_waiters;
+ int cont;
if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
if (!m->_m_lock)
if (m->_m_type != PTHREAD_MUTEX_NORMAL) {
if (!m->_m_lock)
@@
-16,15
+18,14
@@
int pthread_mutex_unlock(pthread_mutex_t *m)
self->robust_list.pending = &m->_m_next;
*(void **)m->_m_prev = m->_m_next;
if (m->_m_next) ((void **)m->_m_next)[-1] = m->_m_prev;
self->robust_list.pending = &m->_m_next;
*(void **)m->_m_prev = m->_m_next;
if (m->_m_next) ((void **)m->_m_next)[-1] = m->_m_prev;
-
a_store
(&m->_m_lock, 0);
+
cont = a_swap
(&m->_m_lock, 0);
self->robust_list.pending = 0;
self->robust_list.pending = 0;
- } else {
- a_store(&m->_m_lock, 0);
+ goto wake;
}
}
- } else {
- a_store(&m->_m_lock, 0);
}
}
-
- if (m->_m_waiters) __wake(&m->_m_lock, 1, 0);
+ cont = a_swap(&m->_m_lock, 0);
+wake:
+ if (waiters || cont<0)
+ __wake(&m->_m_lock, 1, 0);
return 0;
}
return 0;
}