如果进行调用的线程并不拥有那个互斥对象，则这个调用可能会失败。

This call might fail if the calling thread does not own the mutex object.

youdao

并且绝对不要对您未保持锁的互斥对象进行解锁操作(否则，pthread _ mutex_unlock调用将失败并带一个非零的eperm返回值)。

And you should never unlock a mutex that you don't hold a lock for (otherwise, the pthread_mutex_unlock call will fail with a non-zero EPERM return value).

youdao

如果调用线程并不拥有这个互斥信号量，那么这个函数的执行将会失败。

If the calling thread has no ownership of this mutex, this function fails.

youdao

如果调用线程并不拥有这个互斥信号量，那么这个函数的执行将会失败。

If the calling thread has no ownership of this mutex, this function fails.

youdao