hello_multi.c

unix linux 编程实践源代码

/* hello_multi.c - a multi-threaded hello world program */

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

#define	NUM	5

main()
{
	pthread_t t1, t2;		/* two threads */

	void	*print_msg(void *);

	pthread_create(&t1, NULL, print_msg, (void *)"hello");
	pthread_create(&t2, NULL, print_msg, (void *)"world\n");
	pthread_join(t1, NULL);
	pthread_join(t2, NULL);
}
void *print_msg(void *m)
{
	char *cp = (char *) m;
	int i;
	for(i=0 ; i<NUM ; i++){
		printf("%s", m);
		fflush(stdout);
		sleep(1);
	}
	return NULL;
}