HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 3ef31cb5 KH |
1 | /* sysselect.h - System-dependent definitions for the select function. |
| 2 | Copyright (C) 1995 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GNU Emacs. | |
| 5 | ||
| 6 | GNU Emacs is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GNU Emacs is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 19 | ||
| 20 | #ifdef HAVE_SYS_SELECT | |
| 21 | #include <sys/select.h> | |
| 22 | #endif | |
| 23 | ||
| 24 | #ifdef FD_SET | |
| 25 | #ifdef FD_SETSIZE | |
| 26 | #define MAXDESC FD_SETSIZE | |
| 27 | #else | |
| 28 | #define MAXDESC 64 | |
| 29 | #endif | |
| 30 | #define SELECT_TYPE fd_set | |
| 31 | #else /* no FD_SET */ | |
| 32 | #define MAXDESC 32 | |
| 33 | #define SELECT_TYPE int | |
| 34 | ||
| 35 | /* Define the macros to access a single-int bitmap of descriptors. */ | |
| 36 | #define FD_SET(n, p) (*(p) |= (1 << (n))) | |
| 37 | #define FD_CLR(n, p) (*(p) &= ~(1 << (n))) | |
| 38 | #define FD_ISSET(n, p) (*(p) & (1 << (n))) | |
| 39 | #define FD_ZERO(p) (*(p) = 0) | |
| 40 | #endif /* no FD_SET */ | |
| 41 | ||
| 42 | #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X) | |
| 43 | #define select sys_select | |
| 44 | #endif |