1/* A GNU-like <signal.h>. 2 3 Copyright (C) 2006-2007 Free Software Foundation, Inc. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18#if defined __need_sig_atomic_t || defined __need_sigset_t 19/* Special invocation convention inside glibc header files. */ 20 21# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@ 22 23#else 24/* Normal invocation convention. */ 25 26#ifndef _GL_SIGNAL_H 27 28/* The include_next requires a split double-inclusion guard. */ 29#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@ 30 31#ifndef _GL_SIGNAL_H 32#define _GL_SIGNAL_H 33 34/* The definition of GL_LINK_WARNING is copied here. */ 35 36 37#ifdef __cplusplus 38extern "C" { 39#endif 40 41 42#if !@HAVE_POSIX_SIGNALBLOCKING@ 43 44/* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */ 45# include <sys/types.h> 46 47/* Maximum signal number + 1. */ 48# ifndef NSIG 49# define NSIG 32 50# endif 51 52/* This code supports only 32 signals. */ 53typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1]; 54 55/* A set or mask of signals. */ 56# if !@HAVE_SIGSET_T@ 57typedef unsigned int sigset_t; 58# endif 59 60/* Test whether a given signal is contained in a signal set. */ 61extern int sigismember (const sigset_t *set, int sig); 62 63/* Initialize a signal set to the empty set. */ 64extern int sigemptyset (sigset_t *set); 65 66/* Add a signal to a signal set. */ 67extern int sigaddset (sigset_t *set, int sig); 68 69/* Remove a signal from a signal set. */ 70extern int sigdelset (sigset_t *set, int sig); 71 72/* Fill a signal set with all possible signals. */ 73extern int sigfillset (sigset_t *set); 74 75/* Return the set of those blocked signals that are pending. */ 76extern int sigpending (sigset_t *set); 77 78/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET. 79 Then, if SET is not NULL, affect the current set of blocked signals by 80 combining it with *SET as indicated in OPERATION. 81 In this implementation, you are not allowed to change a signal handler 82 while the signal is blocked. */ 83# define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */ 84# define SIG_SETMASK 1 /* blocked_set = *set; */ 85# define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */ 86extern int sigprocmask (int operation, const sigset_t *set, sigset_t *old_set); 87 88#endif 89 90 91#ifdef __cplusplus 92} 93#endif 94 95#endif /* _GL_SIGNAL_H */ 96#endif /* _GL_SIGNAL_H */ 97#endif 98