Unix 环境多线程与互斥量的编程实例

#include <stdio.h>

#include <pthread.h>

pthread_t thread[2];

int number = 0;

pthread_mutex_t mut;

void *worker1()

{

    int i=0;

    printf("I am worker1\n");

    for(i=0; i<10; i++)

    {

        pthread_mutex_lock(&mut);

        number++;

        pthread_mutex_unlock(&mut);

        printf("worker1 number is %d\n", number);

        sleep(1);

    }

    pthread_exit(NULL);

}

void *worker2()

{

    int i=0;

    printf("I am worker2\n");

    for(i=0; i<10; i++)

    {

        pthread_mutex_lock(&mut);

        number++;

        pthread_mutex_unlock(&mut);

        printf("worker2 number is %d\n", number);

        sleep(1);

    }

    pthread_exit(NULL);

}

int main()

{

    /* 初始化互斥量 */

    pthread_mutex_init(&mut, NULL);

    /* 创建工人1线程 */

    pthread_create(&thread[0], NULL, worker1,NULL);

    /* 创建工人2线程 */

    pthread_create(&thread[1], NULL, worker2,NULL);

    /* 等待工人1线程的结束 */

    pthread_join(thread[0], NULL);

    /* 等待工人1线程的结束 */

    pthread_join(thread[1], NULL);

    return 0;

}