| /* __sigset_t manipulators. Generic/BSD 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 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 |