thread_join

thread_join

代码

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


void *thread_func01(void *arg){
    
    

        printf("I am thread_01\n");
        return (void *)1;

}

void *thread_func02(void *arg){
    
    

        printf("I am thread_02\n");

        pthread_detach(pthread_self());

        pthread_exit((void *)2);

}

int main(){
    
    

        int err01, err02;
        pthread_t tid01, tid02;
        void *rval01, *rval02;

        err01 = pthread_create(&tid01, NULL, thread_func01, NULL);
        err02 = pthread_create(&tid02, NULL, thread_func02, NULL);

        if(err01 || err02){
    
    
                printf("create new thread failed\n");
                return 0;
        }

        printf("I am main thread\n");

        printf("join01's rval is %d\n", pthread_join(tid01, &rval01));
        printf("join02's rval is %d\n", pthread_join(tid02, &rval02));

        printf("thread 1 exit code is %d\n", (int *)rval01);
        printf("thread 2 exit code is %d\n", (int *)rval02);

        printf("I am main thread again\n");



        return 0;
}

运行结果

carey@ubuntu:~/thread$ ./thread_join 
I am thread_01
I am main thread
join01's rval is 0
I am thread_02
join02's rval is 0
thread 1 exit code is 1
thread 2 exit code is 2
I am main thread again

总结

懵~