1#ifndef __pthread_mutex_lock2strong_alias (__pthread_mutex_lock, pthread_mutex_lock)3hidden_def (__pthread_mutex_lock)4#endif56int7__pthread_mutex_lock (pthread_mutex_t *mutex)8{9assert (sizeof(mutex->__size) >=sizeof(mutex->__data));1011unsignedinttype =PTHREAD_MUTEX_TYPE_ELISION...
在pthread_mutex_lock函数中,我们需要根据实际情况添加加锁互斥锁的逻辑。 6. 步骤四:调用pthread_mutex_lock函数 最后,我们需要调用pthread_mutex_lock函数来实现互斥锁的加锁。下面是调用pthread_mutex_lock函数的代码: mutex=pthread_mutex_t()# 创建互斥锁对象# 调用pthread_mutex_lock函数result=pthread_mutex_lo...
1:pthread_mutex_init(pthread_mutex_t * mutex,const pthread_mutexattr_t *attr); 初始化锁变量mutex。attr为锁属性,NULL值为默认属性。 2:pthread_mutex_lock(pthread_mutex_t *mutex);加锁 3:pthread_mutex_tylock(pthread_mutex_t *mutex);加锁,但是与2不一样的是当锁已经在使用的时候,返回为EBUSY,...
函数pthread_mutex_trylock与pthread_mutex_lock相同,只是如果mutex参数所引用的健壮互斥对象被任何线程 (包括当前线程) 锁定,那么调用将立即返回。 pthread_mutex_unlock函数释放互斥对象所引用的互斥对象。 释放互斥对象的方式取决于互斥对象的类型属性。 如果在调用pthread_mutex_unlock时存在被mutex参数引用的...
一个很容混淆的地方是,误以为用户程序锁API的实现和接口,最终也会调用内核相关的锁操作提供的API。 应用程序锁API接口 主要的API有: pthread_mutex_lock; 相关说明如下: NAME pthread_mutex_lock -- lock a mutex SYNOPSIS #include<pthread.h>int
If the mutex type is PTHREAD_MUTEX_RECURSIVE, then the mutex maintains the concept of a lock count. When a thread successfully acquires a mutex for the first time, the lock count is set to 1. Every time a thread relocks this mutex, the lock count is incremented by one. Each time the...
#define _UNIX03_THREADS #include <pthread.h> int pthread_mutex_lock(pthread_mutex_t *mutex); General description Locks a mutex object, which identifies a mutex. Mutexes are used to protect shared resources. If the mutex is already locked by another thread, the thread waits for the mutex to...
pthread_mutex_lock函数是通过使用互斥锁来实现线程同步的。它的声明如下: int pthread_mutex_lock(pthread_mutex_t *mutex); 其中,参数mutex是一个指向互斥锁的指针。下面是使用pthread_mutex_lock的基本步骤: 1.定义互斥锁: pthread_mutex_t mutex; 2.初始化互斥锁: pthread_mutex_init(&mutex, NULL); 3.加...