Linux thread synchronization mutex

Linux thread synchronization mutex-Linux general technology-Linux programming and kernel information. The following is a detailed description. Compile g ++-o thread_mutex mutex. cpp-lpthread
Run./thread_mutex
If no mutex is added, the order of output AAAAAAAA and BBBBBBBBBB is chaotic.
If the mutex is added, 10 AAAA and 10 bbbbbbbbbb are output first.

CODE: # include # Include Using namespace std; Pthread_mutex_t MyMutex; Void * ThreadFuncA (void * p) { Pthread_mutex_lock (& MyMutex); // lock mutex For (int j = 0; j <10; ++ j) { Cout <"AAAAAAAAAA" < Sleep (1); // to see the difference between mutex and non-mutex } Pthread_mutex_unlock (& MyMutex); // release mutex Return NULL; } Void * ThreadFuncB (void * p) { Pthread_mutex_lock (& MyMutex ); For (int j = 0; j <10; ++ j) { Cout <"bbbbbbbbbbbbb" < Sleep (3); // to see the difference between mutex and non-mutex } Pthread_mutex_unlock (& MyMutex ); Return NULL; } Int main () { Pthread_t MythreadID1; // thread ID Pthread_t MythreadID2; // thread ID Int ThreadRet1; // the return value of the thread. Int ThreadRet2; // the return value of the thread. // Initialize mutex Pthread_mutex_init (& MyMutex, NULL ); // The return value can be used to determine whether the thread is successful. ThreadRet1 = pthread_create (& MythreadID1, NULL, & ThreadFuncA, NULL ); ThreadRet2 = pthread_create (& MythreadID2, NULL, & ThreadFuncB, NULL ); Pthread_join (MythreadID1, NULL); // wait until the thread ends. Pthread_join (MythreadID2, NULL); // wait until the thread ends. Pthread_mutex_destroy (& MyMutex); // destroy mutex }