#include <stdio.h>
#include <stdlib.h>
#include <sched.h>
#include <unistd.h>

#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>

void
child(int cnt)
{
	while (cnt--)
		sched_yield();
	exit(EXIT_SUCCESS);
}

int
main(int argc, char **argv)
{
	int status;
	int pids;
	int cnt;
	int i;

	if (argc != 3) {
		fprintf(stderr, "usage: %s <loops> <pids>\n", argv[0]);
		exit(EXIT_FAILURE);
	}
	cnt = atoi(argv[1]);
	pids = atoi(argv[2]);

	for (i = 0; i < pids; i++) {
		if (fork() == 0)
			child(cnt);
	}
	for (i = 0; i < pids; i++)
		wait(&status);

	exit(EXIT_SUCCESS);
}