hujun260 commented on code in PR #15566:
URL: https://github.com/apache/nuttx/pull/15566#discussion_r1917481997
##########
sched/pthread/pthread_condsignal.c:
##########
@@ -68,12 +66,16 @@ int pthread_cond_signal(FAR pthread_cond_t *cond)
}
else
{
- if (cond->wait_count > 0)
+ nxmutex_lock(&cond->mutex);
+
+ if (atomic_load(&cond->wait_count) > 0)
Review Comment:
we already protect by mutex, Is atomic operation still necessary?
if necessary we should use atomic_cmpxchg
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