| /* __sigset_t manipulators. Linux version. |
| Copyright (C) 1991-2018 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 */ |