杀死进程

pthread_cancel
需要出入tid
返回值：失败返回errno，成功返回0
被pthread_cancel杀死的进程状态，退出状态为PTHREAD_CANCELED

强行设置取消点pthread_testcancel()

pthread_cancel.c

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

void* thr(void *arg)
{
    while(1){
        printf("I am a thread! pid=%d,tid=%lu\n",getpid(),pthread_self());
        sleep(1);
    }
    return NULL;
}

int main()
{
    pthread_t tid;
    pthread_create(&tid,NULL,thr,NULL);

    sleep(5);
    pthread_cancel(tid);  
    void *ret;
    pthread_join(tid,NULL); 
    printf("thread exit with %d\n",(int)ret);
    pthread_exit(NULL);
    return 0;
}