| 1 | /* sysselect.h - System-dependent definitions for the select function. |
| 2 | Copyright (C) 1995, 2002, 2003, 2004, 2005, |
| 3 | 2006 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, 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) */ |