摘要：
进程与进程的锁和线程与线程的锁是不一样的。 abc三部曲 pthread_mutex_t lock =PTHREAD_MUTEX_INITIALIZER;//创建一个锁 pthread_mutex_lock(&lock);//上锁 pthread_mutex_unlock(&lock);//开锁 对 阅读全文
摘要：
临界区问题(critical-section problem) Each concurrent(并发) process has a segment of code ,called a critical section,in which the process may be changing comm 阅读全文