c - What happens to Mutex when the thread which acquired it exits?

Question

Suppose there are two threads, the main thread and say thread B(created by main). If B acquired a mutex(say pthread_mutex) and it has called pthread_exit without unlocking the lock. So what happens to the mutex? Does it become free?

Answer 1

nope. The mutex remaines locked. What actually happens to such a lock depends on its type, You can read about that here or here