1/* sysselect.h - System-dependent definitions for the select function.
2   Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005,
3                 2006, 2007  Free Software Foundation, Inc.
4
5This file is part of GNU Emacs.
6
7GNU Emacs is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Emacs is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Emacs; see the file COPYING.  If not, write to
19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20Boston, MA 02110-1301, USA.  */
21
22#ifdef HAVE_SYS_SELECT_H
23#if defined (DARWIN) || defined (MAC_OSX)
24#undef init_process
25#endif
26#include <sys/select.h>
27#if defined (DARWIN) || defined (MAC_OSX)
28#define init_process emacs_init_process
29#endif
30#endif
31
32#ifdef FD_SET
33#ifdef FD_SETSIZE
34#define MAXDESC FD_SETSIZE
35#else
36#define MAXDESC 64
37#endif
38#define SELECT_TYPE fd_set
39#else /* no FD_SET */
40#define MAXDESC 32
41#define SELECT_TYPE int
42
43/* Define the macros to access a single-int bitmap of descriptors.  */
44#define FD_SET(n, p) (*(p) |= (1 << (n)))
45#define FD_CLR(n, p) (*(p) &= ~(1 << (n)))
46#define FD_ISSET(n, p) (*(p) & (1 << (n)))
47#define FD_ZERO(p) (*(p) = 0)
48#endif /* no FD_SET */
49
50#if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
51#define select sys_select
52#endif
53
54/* arch-tag: 36d05500-8cf6-4847-8e78-6721f18c06ef
55   (do not change this comment) */
56