Linux C语言多线程函数参数传入

线程中函数参数由结构体指针传入

#include 
#include 
#include 

typedef struct
{
	char name[20];
	int time;
	int start;
	int end;

}RaceArg;

void* th_fn(void *arg)
{
	RaceArg *r = (RaceArg*)arg;
	int i;
	for(i=r->start;i<=r->end;i++)
	{
		printf("%s(%lx) running %d\n",
			r->name, pthread_self(),i);
		usleep(r->time);
	}
}

int main(void)
{
	int err;
	pthread_t rabbit, turtle;

	RaceArg r_a = {"rabbit", (int)(drand48()*10000000), 20, 50};

	RaceArg t_a = {"turtle", (int)(drand48()*10000000), 10, 60};

	if((err = pthread_create(&rabbit, NULL, th_fn, (void*)&r_a))!=0)
	{
		perror("pthread_create error");
	}

	if((err = pthread_create(&turtle, NULL, th_fn, (void*)&t_a))!=0)
	{
		perror("pthread_create error");
	}


	pthread_join(rabbit, NULL);
	pthread_join(turtle, NULL);

	printf("control thread id: %lx\n", pthread_self());
        printf("finished\n");

	return 0;
}