#include <pthread.h> pthread_mutex_tmp= PTHREAD_MUTEX_INITIALIZER; pthread_mutexattr_tmattr; intret; /* initialize a mutex to its default value */ret= pthread_mutex_init(&mp, NULL); /* initialize a mutex */ret= pthread_mutex_init(&mp, &mattr); ...
pthread_mutex_tmutex =PTHREAD_MUTEX_INITIALIZER; l 函数作用: 该函数用于C函数的多线程编程中,互斥锁的初始化。 pthread_mutex_init() 函数是以动态方式创建互斥锁的,参数attr指定了新建互斥锁的属性。如果参数attr为空(NULL),则使用默认的互斥锁属性,默认属性为快速互斥锁 。互斥锁的属性在创建锁的时候指定,在...
有两种方法创建互斥锁,静态方式和动态方式。POSIX定义了一个宏PTHREAD_MUTEX_INITIALIZER来静态初始化互斥锁,方法如下: pthread_mutex_t mutex=PTHREAD_MUTEX_INITIALIZER; 在LinuxThreads实现中,pthread_mutex_t是一个结构,而PTHREAD_MUTEX_INITIALIZER则是一个结构常量。 动态方式是采用pthread_mutex_init()函数来初始化...
一,锁的创建 锁可以被动态或静态创建,可以用宏PTHREAD_MUTEX_INITIALIZER来静态的初始化锁,采用这种方式比较容易理解,互斥锁是pthread_mutex_t的结构体,而这个宏是一个结构常量,如下可以完成静态的初始化锁: pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; 另外锁可以用pthread_mutex_init函数动态的创建,函数原...
NAME pthread_mutex_init, pthread_mutex_destroy - initialise or destroy a mutex SYNOPSIS #include<pthread.h>intpthread_mutex_init(pthread_mutex_t*mutex,constpthread_mutexattr_t*attr);intpthread_mutex_destroy(pthread_mutex_t*mutex);pthread_mutex_tmutex = PTHREAD_MUTEX_INITIALIZER; ...
在缺省互斥属性适当的情况下,可以使用宏 PTHREAD_MUTEX_INITIALIZER 来初始化静态分配的互斥对象。 此效果相当于通过调用pthread_mutex_init并将参数attr指定为 NULL 进行动态初始化,但未执行任何错误检查。 参数 返回值 如果成功,pthread_mutex_init和pthread_mutex_destroy函数将返回零。 否则,将返回错误号以指示错误。
pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_init(&mutex2, NULL); pthread_mutex_init(&mutex3, &mta); All three mutexes are created with the default mutex attributes. Every mutex must eventually be destroyed withpthread_mutex_destroy(). The machine eventually detects the ...
pthread_mutex_init l 头文件: #include l 函数原型: int pthread_mutex_init(pthread_mutex_t *restrict mutex,const pthread_mutexattr_t *restrict attr); pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; l 函数作用:该函数用于C函数
int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr); pthread_mutex_t mutex= PTHREAD_MUTEX_INITIALIZER int pthread_mutex_destroy(pthread_mutex_t *mutex);DESCRIPTIONThe pthread_mutex_init() function initializes the mutex referenced by mutex with attributes specified by ...
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;l 函数作⽤:该函数⽤于C函数的多线程编程中,互斥锁的初始化。pthread_mutex_init() 函数是以动态⽅式创建互斥锁的,参数attr指定了新建互斥锁的属性。如果参数attr为空(NULL),则使⽤默认的互斥锁属性,默认属性为快速互斥锁。互斥锁的属性在创建锁的...