#ifndef __SIGSET_H__ #define __SIGSET_H__ /* __sig_atomic_t, _sigset_t, and related definitions. Linux version. Copyright (C) 1991, 1992, 1994, 1996, 1997, 2007 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #define _SIGSET_H_types 1 #define _SIGSET_H_fns 1 #define ____sigset_t_defined typedef int __sig_atomic_t; /* A `sigset_t' has a bit for each signal. */ #define _SIGSET_NWORDS (64 / (8 * sizeof(unsigned long int))) typedef struct { unsigned long int __val[_SIGSET_NWORDS]; } _sigset_t; /* 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) \ ({ \ int __cnt = _SIGSET_NWORDS; \ _sigset_t* __set = (set); \ while (--__cnt >= 0) { \ __set->__val[__cnt] = 0; \ } \ 0; \ }) #define __sigfillset(set) \ ({ \ int __cnt = _SIGSET_NWORDS; \ _sigset_t* __set = (set); \ while (--__cnt >= 0) { \ __set->__val[__cnt] = ~0UL; \ } \ 0; \ }) #define __sigcopyset(set, src) \ ({ \ int __cnt = _SIGSET_NWORDS; \ _sigset_t* __set = (set); \ _sigset_t* __src = (src); \ while (--__cnt >= 0) { \ __set->__val[__cnt] = __src->__val[__cnt]; \ } \ 0; \ }) /* These functions needn't check for a bogus signal number -- error checking is done in the non __ versions. */ #define __SIGSETFN(NAME, BODY, CONST) \ static inline int NAME(CONST _sigset_t* __set, int __sig) { \ unsigned long int __mask = __sigmask(__sig); \ unsigned long int __word = __sigword(__sig); \ return BODY; \ } __SIGSETFN(__sigismember, (__set->__val[__word] & __mask) ? 1 : 0, __const) __SIGSETFN(__sigaddset, ((__set->__val[__word] |= __mask), 0), ) __SIGSETFN(__sigdelset, ((__set->__val[__word] &= ~__mask), 0), ) #undef __SIGSETFN #endif /* __SIGSET_H__ */