pthread

编译的的时候需要加-lpthread选项，因为它不是linux默认的库。

 

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

void * thread_function(void * arg);

char message[] = "Hello world!";

int main(){
	int res;
	pthread_t a_thread;
	void * thread_result;

	res = pthread_create(&a_thread, NULL, thread_function, (void *)message);
	if( res != 0 ){
		perror("Thread create failed");
		exit(1);
	}

	printf("Waiting for thread to finish...\n");
	res = pthread_join(a_thread,&thread_result);

	if( res != 0 ){
		perror("Thread join failed");
		exit(1);
	}

	printf("Thread joined, it reaturned %s\n",(char *)thread_result);
	printf("Message is now %s\n", message);
	exit(0);
}

void * thread_function(void *arg){
	printf("thread function is running, Argument was %s\n",(char *)arg);
	sleep(3);
	strcpy(message,"Bye!");
	pthread_exit("Thanks for cpu time");
}