pthread_kill 与pthread_cancel使用方法

pthread_kill 与pthread_cancel使用方法

#include <pthread.h>#include <stdio.h>#include <stdlib.h>#include <unistd.h>pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;pthread_cond_t cond = PTHREAD_COND_INITIALIZER;void* thread0(void* arg){    pthread_mutex_lock(&mutex);    printf("in thread 0 tag 1\n");    pthread_cond_wait(&cond, &mutex);    printf("in thread 0 tag 2\n");    pthread_mutex_unlock(&mutex);    printf("in thread 0 tag 3\n");    pthread_exit(NULL);}void* thread1(void* arg){    sleep(10);    printf("in thread 1 tag 1\n");    pthread_mutex_lock(&mutex);    printf("in thread 1 tag 2\n");    pthread_cond_broadcast(&cond);    pthread_mutex_unlock(&mutex);    printf("in thread 1 tag 3\n");    pthread_exit(NULL);}int main(){    pthread_t tid[2];    if (pthread_create(&tid[0], NULL, thread0, NULL) != 0)     {        exit(1);    }    if (pthread_create(&tid[1], NULL, thread1, NULL) != 0)     {        exit(1);    }    sleep(5);    printf("in main thread tag 1\n");    pthread_cancel(tid[0]);    //pthread_kill(tid[0],3);    pthread_join(tid[0], NULL);    printf("tid0\n");    pthread_join(tid[1], NULL);    printf("tid1\n");    pthread_mutex_destroy(&mutex);    pthread_cond_destroy(&cond);    return 0;}使用pthread_cancel 结果如下：in thread 0 tag 1in main thread tag 1tid0in thread 1 tag 1pthread_cancel kill 掉线程，但是如果有类似拿锁的操作，则要等拿到锁才能kill掉。pthread_kill 结果如下：in thread 0 tag 1in main thread tag 1Quitpthread_kill 会对线程0发出signal_quit(3)的系统信号。 如果线程0不处理，则整个进程退出。