1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/* __sigset_t manipulators. Generic/BSD version.
Copyright (C) 1991-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _SIGSETOPS_H
#define _SIGSETOPS_H 1
#include <signal.h>
/* Return a mask that includes SIG only. The cast to `sigset_t' avoids
overflow if `sigset_t' is wider than `int'. */
# define __sigmask(sig) (((__sigset_t) 1) << ((sig) - 1))
#define __sigemptyset(set) \
(__extension__ ({ \
*(set) = (__sigset_t) 0; \
0; \
}))
#define __sigfillset(set) \
(__extension__ ({ \
*(set) = ~(__sigset_t) 0; \
0; \
}))
# define __sigisemptyset(set) \
(*(set) == (__sigset_t) 0)
# define __sigandset(dest, left, right) \
(__extension__ ({ \
*(dest) = *(left) & *(right); \
0; \
}))
# define __sigorset(dest, left, right) \
(__extension__ ({ \
*(dest) = *(left) | *(right); \
0; \
}))
/* These macros needn't check for a bogus signal number;
checking is done in the non-__ versions. */
# define __sigismember(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) & __mask ? 1 : 0; \
}))
# define __sigaddset(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) |= __mask; \
0; \
}))
# define __sigdelset(set, sig) \
(__extension__ ({ \
__sigset_t __mask = __sigmask (sig); \
*(set) &= ~__mask; \
0; \
}))
#endif
|
