/*
 * select() emulation for MiNT. Written by Eric R. Smith and placed in the
 * public domain
 */

#include <errno.h>
#include "mintbind.h"

struct timeval {
	long	tv_sec;
	long	tv_usec;
};

int
select(junk, rfds, wfds, xfds, timeout)
	int junk;
	long rfds, wfds, xfds;
	struct timeval *timeout;
{
/* the only tricky part, really, is figuring out the timeout value.
   a null pointer means indefinite timeout, which is the same as a 0
   value under MiNT. A non-null pointer to a 0 valued struct means
   to poll; in MiNT we simulate this with a minimum timeout value.
 */
	unsigned short mtime;
	int rval;

	if (timeout) {
		mtime = timeout->tv_sec * 1000 + timeout->tv_usec/1000;
		if (mtime == 0) mtime = 1;
	}
	else
		mtime = 0;

	rval = Fselect(mtime, rfds, wfds, xfds);
	if (rval < 0) {
		errno = -rval;
		return -1;
	}
	return rval;
}