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3ef31cb5 | 1 | /* sysselect.h - System-dependent definitions for the select function. |
ba318903 | 2 | Copyright (C) 1995, 2001-2014 Free Software Foundation, Inc. |
3ef31cb5 KH |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
b9b1cc14 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
3ef31cb5 | 7 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
3ef31cb5 KH |
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 | |
b9b1cc14 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
3ef31cb5 | 18 | |
5897da1d PE |
19 | #ifndef SYSSELECT_H |
20 | #define SYSSELECT_H 1 | |
21 | ||
0d23c240 | 22 | #ifndef DOS_NT |
3ef31cb5 | 23 | #include <sys/select.h> |
388cdec0 | 24 | #endif |
3ef31cb5 | 25 | |
a583bbef EZ |
26 | /* The w32 build defines select stuff in w32.h, which is included |
27 | where w32 needs it, but not where sysselect.h is included. The w32 | |
28 | definitions in w32.h are incompatible with the below. */ | |
29 | #ifndef WINDOWSNT | |
3ef31cb5 | 30 | #ifdef FD_SET |
d486344e PE |
31 | #ifndef FD_SETSIZE |
32 | #define FD_SETSIZE 64 | |
3ef31cb5 | 33 | #endif |
3ef31cb5 | 34 | #else /* no FD_SET */ |
d486344e PE |
35 | #define FD_SETSIZE 32 |
36 | typedef int fd_set; | |
3ef31cb5 KH |
37 | |
38 | /* Define the macros to access a single-int bitmap of descriptors. */ | |
39 | #define FD_SET(n, p) (*(p) |= (1 << (n))) | |
40 | #define FD_CLR(n, p) (*(p) &= ~(1 << (n))) | |
41 | #define FD_ISSET(n, p) (*(p) & (1 << (n))) | |
42 | #define FD_ZERO(p) (*(p) = 0) | |
43 | #endif /* no FD_SET */ | |
a583bbef | 44 | #endif /* not WINDOWSNT */ |
3ef31cb5 | 45 | |
4624371d | 46 | #if !defined (HAVE_SELECT) |
3ef31cb5 KH |
47 | #define select sys_select |
48 | #endif | |
0d23c240 | 49 | |
c9240d7a | 50 | #ifdef MSDOS |
0d23c240 EZ |
51 | #define pselect sys_select |
52 | #endif | |
5897da1d | 53 | |
71b2605c | 54 | #ifndef WINDOWSNT |
5897da1d PE |
55 | INLINE_HEADER_BEGIN |
56 | ||
57 | /* Check for out-of-range errors if ENABLE_CHECKING is defined. */ | |
58 | ||
59 | INLINE void | |
60 | fd_CLR (int fd, fd_set *set) | |
61 | { | |
62 | eassume (0 <= fd && fd < FD_SETSIZE); | |
63 | FD_CLR (fd, set); | |
64 | } | |
65 | ||
66 | INLINE bool | |
67 | fd_ISSET (int fd, fd_set *set) | |
68 | { | |
69 | eassume (0 <= fd && fd < FD_SETSIZE); | |
70 | return FD_ISSET (fd, set) != 0; | |
71 | } | |
72 | ||
73 | INLINE void | |
74 | fd_SET (int fd, fd_set *set) | |
75 | { | |
76 | eassume (0 <= fd && fd < FD_SETSIZE); | |
77 | FD_SET (fd, set); | |
78 | } | |
79 | ||
80 | #undef FD_CLR | |
81 | #undef FD_ISSET | |
82 | #undef FD_SET | |
83 | #define FD_CLR(fd, set) fd_CLR (fd, set) | |
84 | #define FD_ISSET(fd, set) fd_ISSET (fd, set) | |
85 | #define FD_SET(fd, set) fd_SET (fd, set) | |
86 | ||
87 | INLINE_HEADER_END | |
88 | ||
71b2605c EZ |
89 | #endif /* !WINDOWSNT */ |
90 | ||
5897da1d | 91 | #endif |