From 7e66b0a979e76be757d090cb8d34d7f344db0422 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 5 Feb 1994 19:31:48 +0000 Subject: [PATCH] Initial revision --- sysdeps/unix/sysv/sysv4/sigset.h | 76 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 sysdeps/unix/sysv/sysv4/sigset.h diff --git a/sysdeps/unix/sysv/sysv4/sigset.h b/sysdeps/unix/sysv/sysv4/sigset.h new file mode 100644 index 0000000..b3e9f0e --- /dev/null +++ b/sysdeps/unix/sysv/sysv4/sigset.h @@ -0,0 +1,76 @@ +/* Copyright (C) 1991, 1992, 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _SIGSET_H +#define _SIGSET_H 1 + +typedef int __sig_atomic_t; + +/* Return a mask that includes SIG only. */ +#define __sigmask(sig) (1 << ((sig) - 1)) + +/* A `sigset_t' has a bit for each signal. */ +typedef struct + { + unsigned long int __sigbits[4]; + } __sigset_t; + +/* It's easier to assume 8-bit bytes than to get CHAR_BIT. */ +#define __NSSBITS (sizeof (__sigset_t) * 8) +#define __SSELT(s) ((s) / __NSSBITS) +#define __SSMASK(s) (1 << ((s) % __NSSBITS)) + +extern __inline int +__sigemptyset (__sigset_t *__set) +{ + __set->__sigbits[0] = __set->__sigbits[1] = 0L; + __set->__sigbits[2] = __set->__sigbits[3] = 0L; + return 0; +} + +extern __inline int +__sigfillset (__sigset_t *__set) +{ + __set->__sigbits[0] = 0x7fffffffL; + __set->__sigbits[1] = __set->__sigbits[2] = __set->__sigbits[3] = 0L; + return 0; +} + +extern __inline int +__sigaddset (__sigset_t *__set, int __sig) +{ + __set->__sigbits[__SSELT (sig)] |= __SSMASK (__sig); + return 0; +} + +extern __inline int +__sigdelset (__sigset_t *__set, int __sig) +{ + __set->__sigbits[__SSELT (sig)] &= ~__SSMASK (__sig); + return 0; +} + +extern __inline int +__sigismember (__sigset_t *__set, int __sig) +{ + if (__set->__sigbits[__SSELT (sig)] & __SSMASK (__sig)) + return 1; + return 0; +} + +#endif /* sigset.h */ -- 2.7.4