linux线程的挂起与恢复

最新推荐文章于 2024-07-28 22:15:00 发布

helloworldex

最新推荐文章于 2024-07-28 22:15:00 发布

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CC 4.0 BY-SA版权

文章标签： linux include

本文链接：https://blog.youkuaiyun.com/helloworldex/article/details/5491784

本文介绍了一个简单的线程暂停与恢复机制的实现方法，通过使用互斥锁和条件变量来控制线程的状态转换，实现了线程间的同步。该机制允许主线程暂停和恢复工作线程的执行。

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#include <stdio.h> #include <pthread.h> #include <stdlib.h> #include <unistd.h> pthread_mutex_t wqy_mutex_pause = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t wqy_cond_pause = PTHREAD_COND_INITIALIZER; bool wqy_pthread_pause = false; void wqy_pthread_suspend(void) { if (wqy_pthread_pause == false) { pthread_mutex_lock( &wqy_mutex_pause ); wqy_pthread_pause = true; printf("------pthread pause------/n"); pthread_mutex_unlock( &wqy_mutex_pause ); } else { printf("pthread suspend already/n"); } } void wqy_pthread_resume(void) { if (wqy_pthread_pause == true) { pthread_mutex_lock(&wqy_mutex_pause); wqy_pthread_pause = false; pthread_cond_broadcast(&wqy_cond_pause); printf("------pthread resume------/n"); pthread_mutex_unlock(&wqy_mutex_pause); } else { printf("pthread resume already/n"); } } void wqy_pthread_pause_location(void) { pthread_mutex_lock(&wqy_mutex_pause); while(wqy_pthread_pause) { pthread_cond_wait(&wqy_cond_pause, &wqy_mutex_pause); } pthread_mutex_unlock(&wqy_mutex_pause); }