mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* __sigset_t manipulators. Generic/BSD version.
|
|
Copyright (C) 1991-2024 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
|