head	1.1;
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	version39-41:1.1;
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comment	@ *  @;


1.1
date	92.05.14.20.36.14;	author mwild;	state Exp;
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desc
@define command types and modes for select emulator
@


1.1
log
@Initial revision
@
text
@/*
 *  This file is part of ixemul.library for the Amiga.
 *  Copyright (C) 1991, 1992  Markus M. Wild
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  $Id$
 *
 *  $Log$
 */

/*
 * definitions of arguments for select() implementation.
 *
 * Each file type that supports select has to look like this:
 *
 *  __..select (f, select_cmd, io_mode)
 *
 */

/*
 * possible values for select_cmd
 */

/* init a select, perhaps initiate a timeout call that can be checked with
 * SELECT_CHECK
 * Return a signal-mask to be used in Wait() that indicates that this file
 * has changed mode.
 */
#define SELCMD_PREPARE	1

/* return whether io_mode on this file won't block */
#define SELCMD_CHECK	2


/*
 * possible values for io_mode
 */

#define SELMODE_IN	0
#define SELMODE_OUT	1
#define SELMODE_EXC	2

/*
 * if PREPARE does a timeout call, use this value (usec) for all these timeouts
 */

#define SELTIMEOUT	100000
@