Linux多线程互斥锁

最新推荐文章于 2024-09-09 19:45:58 发布

静能生悟

最新推荐文章于 2024-09-09 19:45:58 发布

阅读量206

点赞数

CC 4.0 BY-SA版权

分类专栏：操作系统

本文链接：https://blog.youkuaiyun.com/xiezhi123456/article/details/81666885

操作系统专栏收录该内容

52 篇文章

订阅专栏

#include <stdio.h>
#include <pthread.h>
#include <unistd.h>

pthread_mutex_t thread_mutex;
int global_val = 0;

void *thread1(void *arg){
   while(1){
       pthread_mutex_lock(&thread_mutex);
       global_val = global_val + 1;
       printf("thread1 global_val = %d\n", global_val);
       global_val = global_val + 1;
       sleep(2);
printf("thread1 global_val = %d\n", global_val);
       usleep(2);
       pthread_mutex_unlock(&thread_mutex);
   }
   return NULL;
}

void *thread2(void *arg){
   while(1){
       pthread_mutex_lock(&thread_mutex);
global_val = global_val + 1;
printf("thread2 global_val = %d\n", global_val);
sleep(2);
       global_val = global_val + 1;
printf("thread2 global_val = %d\n", global_val);
usleep(2);
       pthread_mutex_unlock(&thread_mutex);
   }
   return NULL;
}

int main(void){

   pthread_t thread_id1 = 0, thread_id2 = 0;

   pthread_mutex_init(&thread_mutex, NULL);
   pthread_create(&thread_id1, NULL, thread1, NULL);
   pthread_create(&thread_id2, NULL, thread2, NULL);

   pthread_join(thread_id1, NULL);
   pthread_join(thread_id2, NULL);

   pthread_mutex_destroy(&thread_mutex);

   return 0;
}