]>
Commit | Line | Data |
---|---|---|
a992f506 | 1 | /* __sigset_t manipulators. Generic/BSD version. |
688903eb | 2 | Copyright (C) 1991-2018 Free Software Foundation, Inc. |
a992f506 ZW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifndef _SIGSETOPS_H | |
20 | #define _SIGSETOPS_H 1 | |
21 | ||
22 | #include <signal.h> | |
23 | ||
24 | /* Return a mask that includes SIG only. The cast to `sigset_t' avoids | |
25 | overflow if `sigset_t' is wider than `int'. */ | |
26 | # define __sigmask(sig) (((__sigset_t) 1) << ((sig) - 1)) | |
27 | ||
28 | #define __sigemptyset(set) \ | |
29 | (__extension__ ({ \ | |
30 | *(set) = (__sigset_t) 0; \ | |
31 | (void)0; \ | |
32 | })) | |
33 | #define __sigfillset(set) \ | |
34 | (__extension__ ({ \ | |
35 | *(set) = ~(__sigset_t) 0; \ | |
36 | (void)0; \ | |
37 | })) | |
38 | ||
39 | # define __sigisemptyset(set) \ | |
40 | (*(set) == (__sigset_t) 0) | |
41 | ||
42 | # define __sigandset(dest, left, right) \ | |
43 | (__extension__ ({ \ | |
44 | *(dest) = *(left) & *(right); \ | |
45 | (void)0; \ | |
46 | })) | |
47 | ||
48 | # define __sigorset(dest, left, right) \ | |
49 | (__extension__ ({ \ | |
50 | *(dest) = *(left) | *(right); \ | |
51 | (void)0; \ | |
52 | })) | |
a992f506 ZW |
53 | |
54 | /* These macros needn't check for a bogus signal number; | |
55 | checking is done in the non-__ versions. */ | |
56 | # define __sigismember(set, sig) \ | |
57 | (__extension__ ({ \ | |
58 | __sigset_t __mask = __sigmask (sig); \ | |
06cf9d31 | 59 | *(set) & __mask ? 1 : 0; \ |
a992f506 ZW |
60 | })) |
61 | ||
62 | # define __sigaddset(set, sig) \ | |
63 | (__extension__ ({ \ | |
64 | __sigset_t __mask = __sigmask (sig); \ | |
06cf9d31 | 65 | *(set) |= __mask; \ |
a992f506 ZW |
66 | (void)0; \ |
67 | })) | |
68 | ||
69 | # define __sigdelset(set, sig) \ | |
70 | (__extension__ ({ \ | |
71 | __sigset_t __mask = __sigmask (sig); \ | |
06cf9d31 | 72 | *(set) &= ~__mask; \ |
a992f506 ZW |
73 | (void)0; \ |
74 | })) | |
75 | ||
76 | #endif |