使用pthread_cond_timedwait把一个线程作为一个定时器使用.

 #include <pthread.h>#include <stdio.h>#include <unistd.h>#include <stdlib.h>void * Proc(void * arg){ pthread_cond_t cond; pthread_mutex_t mutex; pthread_mutex_init(&mutex,NULL); pthread_cond_init(&cond,NULL); timespec to; int i = 0; pthread_mutex_lock(&mutex); to.tv_sec = time(NULL) + 3; to.tv_nsec = 0; while (i < 5) { int err = pthread_cond_timedwait(&cond, &mutex, &to); if (err == ETIMEDOUT) { printf("time out %d: dispatch something.../n",i); i++; } } pthread_mutex_unlock(&mutex);}int main(){ pthread_t pid; int i=0; printf("create thread.../n"); pthread_create(&pid,0,Proc,0); pthread_join(pid,NULL); sleep(1); printf("Succeed exit!/n");}