#include <sys/types.h>
#include <sys/time.h>
#include <sys/fcntl.h>
#include <stdio.h>

fd_set	set;

void
doit(int n, fd_set *set)
{
	fd_set	nosave = *set;
	static	struct timeval tv;
	select(n, 0, &nosave, 0, &tv);
}

main(int ac, char **av)
{
	char	c;
	int	n, N, nfds,fd, fid;
	char	fname[L_tmpnam];

//	morefds();
	N = 61;
	fname[0] = 0;
	nfds = 0;
	FD_ZERO(&set);
	/* Create a temporary file for clients to open */
	tmpnam(fname);
	fd = open(fname, O_RDWR|O_APPEND|O_CREAT, 0666);
	unlink(fname);

	if (ac == 2) N = atoi(av[1]);

	printf("dup\n");
	for (n = 0; n < N; n++) {
		fid = dup(fd);
		if (fid == -1) break;
		if (fid >= nfds) nfds = fid + 1;
		FD_SET(fid, &set);
	}
//	BENCH(doit(nfds,&set), 0);
	printf("select\n");
	doit(nfds,&set);

	printf("close\n");
	for (fid = 0; fid < nfds; fid++) {
		if (FD_ISSET(fid, &set)) {
			close(fid);
		}
	}
	printf("close2\n");
	close(fd);
	exit(0);
}