互斥量
互斥变量是用pthread_mutex_t数据类型表示的,在使用互斥变量之前,必须首先对它进行初始化,可以把它设置为常量PTHREAD_MUTEX_INITIALIZER(只适用于静态分配的互斥量),也可以调用pthread_mutex_init进行初始化,如果动态分配互斥量,在释放内存前需要调用pthread_mutex_destory.1234567int pthread_mutex_init(pthread_mutex_t* restrict mutex, const pthread_mutexattr_t* restrict attr);int pthread_mutex_destory(pthread_mutex_t* mutex);int pthread_mutex_lock(pthread_mutex_t* mutex);int pthread_mutex_trylock(pthread_mutex_t* mutex); //不阻塞,只尝试加锁,若失败返回EBUSY.int pthread_mutex_unlock(pthread_mutex_t* mutex);
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