diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sigsetops.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sigsetops.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sigsetops.h b/sysdeps/unix/sysv/linux/sigsetops.h new file mode 100644 index 0000000000..05a605ff3f --- /dev/null +++ b/sysdeps/unix/sysv/linux/sigsetops.h @@ -0,0 +1,108 @@ +/* __sigset_t manipulators. Linux version. + Copyright (C) 1991-2017 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 + <http://www.gnu.org/licenses/>. */ + +#ifndef _SIGSETOPS_H +#define _SIGSETOPS_H 1 + +#include <signal.h> + +/* Return a mask that includes the bit for SIG only. */ +# define __sigmask(sig) \ + (((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int)))) + +/* Return the word index for SIG. */ +# define __sigword(sig) (((sig) - 1) / (8 * sizeof (unsigned long int))) + +# define __sigemptyset(set) \ + (__extension__ ({ \ + int __cnt = _SIGSET_NWORDS; \ + sigset_t *__set = (set); \ + while (--__cnt >= 0) \ + __set->__val[__cnt] = 0; \ + (void)0; \ + })) + +# define __sigfillset(set) \ + (__extension__ ({ \ + int __cnt = _SIGSET_NWORDS; \ + sigset_t *__set = (set); \ + while (--__cnt >= 0) \ + __set->__val[__cnt] = ~0UL; \ + (void)0; \ + })) + +# define __sigisemptyset(set) \ + (__extension__ ({ \ + int __cnt = _SIGSET_NWORDS; \ + const sigset_t *__set = (set); \ + int __ret = __set->__val[--__cnt]; \ + while (!__ret && --__cnt >= 0) \ + __ret = __set->__val[__cnt]; \ + __ret == 0; \ + })) + +# define __sigandset(dest, left, right) \ + (__extension__ ({ \ + int __cnt = _SIGSET_NWORDS; \ + sigset_t *__dest = (dest); \ + const sigset_t *__left = (left); \ + const sigset_t *__right = (right); \ + while (--__cnt >= 0) \ + __dest->__val[__cnt] = (__left->__val[__cnt] \ + & __right->__val[__cnt]); \ + (void)0; \ + })) + +# define __sigorset(dest, left, right) \ + (__extension__ ({ \ + int __cnt = _SIGSET_NWORDS; \ + sigset_t *__dest = (dest); \ + const sigset_t *__left = (left); \ + const sigset_t *__right = (right); \ + while (--__cnt >= 0) \ + __dest->__val[__cnt] = (__left->__val[__cnt] \ + | __right->__val[__cnt]); \ + (void)0; \ + })) + +/* These macros needn't check for a bogus signal number; + error checking is done in the non-__ versions. */ +# define __sigismember(set, sig) \ + (__extension__ ({ \ + unsigned long int __mask = __sigmask (sig); \ + unsigned long int __word = __sigword (sig); \ + (set)->__val[__word] & __mask ? 1 : 0; \ + })) + +# define __sigaddset(set, sig) \ + (__extension__ ({ \ + unsigned long int __mask = __sigmask (sig); \ + unsigned long int __word = __sigword (sig); \ + (set)->__val[__word] |= __mask; \ + (void)0; \ + })) + +# define __sigdelset(set, sig) \ + (__extension__ ({ \ + unsigned long int __mask = __sigmask (sig); \ + unsigned long int __word = __sigword (sig); \ + (set)->__val[__word] &= ~__mask; \ + (void)0; \ + })) + +#endif /* bits/sigsetops.h */ |