Basic Thread Management

struct thr_rtn {

int completed;

char in_msg[MAX_MSG];

char out_msg[MAX_MSG];

};

main() {

pthread_t tid;

int return_val;

struct thr_rtn *ptr;

struct thr_rtn msg;

strcpy(msg.in_msg, “hello”);

msg.completed = 0;

return_val = pthread_create(

&tid, NULL, thread1_func, &msg);

return_val = pthread_join(tid, &ptr);

/* Now, ptr == &msg,

ptr->completed == 1,

ptr->in_msg ==“hello”,

ptr->out_msg == “hello” */

exit(0);

}

void thread1_func(struct thr_rtn * msg) { strcpy(msg->out_msg,

msg->in_msg);

msg->completed = 1;

pthread_exit((void *) msg);

}

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