| /* __sig_atomic_t, __sigset_t, and related definitions. Generic/BSD version. |
| Copyright (C) 1991-2014 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 _SIGSET_H_types |
| #define _SIGSET_H_types 1 |
| |
| typedef int __sig_atomic_t; |
| |
| /* A `sigset_t' has a bit for each signal. */ |
| typedef unsigned long int __sigset_t; |
| |
| #endif |
| |
| |
| /* We only want to define these functions if <signal.h> was actually |
| included; otherwise we were included just to define the types. Since we |
| are namespace-clean, it wouldn't hurt to define extra macros. But |
| trouble can be caused by functions being defined (e.g., any global |
| register vars declared later will cause compilation errors). */ |
| |
| #if !defined _SIGSET_H_fns && defined _SIGNAL_H |
| #define _SIGSET_H_fns 1 |
| |
| #ifndef _EXTERN_INLINE |
| # define _EXTERN_INLINE __extern_inline |
| #endif |
| |
| /* 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) ((*(set) = (__sigset_t) 0), 0) |
| #define __sigfillset(set) ((*(set) = ~(__sigset_t) 0), 0) |
| |
| #ifdef _GNU_SOURCE |
| # define __sigisemptyset(set) (*(set) == (__sigset_t) 0) |
| # define __sigandset(dest, left, right) \ |
| ((*(dest) = (*(left) & *(right))), 0) |
| # define __sigorset(dest, left, right) \ |
| ((*(dest) = (*(left) | *(right))), 0) |
| #endif |
| |
| /* These functions needn't check for a bogus signal number -- error |
| checking is done in the non __ versions. */ |
| |
| extern int __sigismember (const __sigset_t *, int); |
| extern int __sigaddset (__sigset_t *, int); |
| extern int __sigdelset (__sigset_t *, int); |
| |
| #ifdef __USE_EXTERN_INLINES |
| # define __SIGSETFN(NAME, BODY, CONST) \ |
| _EXTERN_INLINE int \ |
| NAME (CONST __sigset_t *__set, int __sig) \ |
| { \ |
| __sigset_t __mask = __sigmask (__sig); \ |
| return BODY; \ |
| } |
| |
| __SIGSETFN (__sigismember, (*__set & __mask) ? 1 : 0, const) |
| __SIGSETFN (__sigaddset, ((*__set |= __mask), 0), ) |
| __SIGSETFN (__sigdelset, ((*__set &= ~__mask), 0), ) |
| |
| # undef __SIGSETFN |
| #endif |
| |
| |
| #endif /* ! _SIGSET_H_fns. */ |
