+static void unwait(pthread_cond_t *c, pthread_mutex_t *m)
+{
+ /* Removing a waiter is non-trivial if we could be using requeue
+ * based broadcast signals, due to mutex access issues, etc. */
+
+ if (c->_c_mutex == (void *)-1) {
+ a_dec(&c->_c_waiters);
+ if (c->_c_destroy) __wake(&c->_c_waiters, 1, 0);
+ return;
+ }
+
+ while (a_swap(&c->_c_lock, 1))
+ __wait(&c->_c_lock, &c->_c_lockwait, 1, 1);
+
+ if (c->_c_waiters2) c->_c_waiters2--;
+ else a_dec(&m->_m_waiters);
+
+ a_store(&c->_c_lock, 0);
+ if (c->_c_lockwait) __wake(&c->_c_lock, 1, 1);
+
+ a_dec(&c->_c_waiters);
+ if (c->_c_destroy) __wake(&c->_c_waiters, 1, 1);
+}
+