//====================================
// Common.C
// 
// Common definitions for ZNibbles
// 
// ZNibbles
// Vincent Mallet 1997, 1998
//====================================

// $Id: Common.C,v 1.3 1999/04/03 23:50:24 vmallet Exp $

/* ZNibbles - a small multiplayer game
 * Copyright (C) 1997, 1998, 1999 Vincent Mallet - vmallet@enst.fr
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <errno.h>

#include "Common.H"


// check if there's something to read on fd
int read_ready(int fd, int tmout) //  default: tmout = 0 (see Common.H)
{
  fd_set rfds;
  struct timeval tv;
  int retval;
  
  FD_ZERO(&rfds);
  FD_SET(fd, &rfds);
  
  tv.tv_sec = 0;  
  tv.tv_usec = tmout;  // non-blocking
    
  retval = select(fd + 1, &rfds, NULL, NULL, &tv);
    
  return (retval > 0);
}