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/* __sig_atomic_t, __sigset_t, and related definitions. Linux version.
Copyright (C) 1991, 1992, 1994, 1996, 1997 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 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#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 __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 the bit for SIG only. */
# define __sigmask(sig) (1L << ((sig) - 1))
# if defined __GNUC__ && __GNUC__ >= 2
# define __sigemptyset(set) (*((sigset_t *) set) = 0)
# define __sigfillset(set) (*((sigset_t *) set) = ~0)
# ifdef __USE_GNU
/* The POSIX does not specify for handling the whole signal set in one
command. This is often wanted and so we define three more functions
here. */
# define __sigisemptyset(set) (*((sigset_t *) set) == 0)
# define __sigandset(dest, left, right) (*(dest) = *(left) & *(right))
# define __sigorset(dest, left, right) (*(dest) = *(left) | *(right))
# endif
# endif
/* These functions needn't check for a bogus signal number -- error
checking is done in the non __ versions. */
# define __sigismember(set, sig) (*((sigset_t *) set) & (1L << ((sig)-1)))
# define __sigaddset(set, sig) (*((sigset_t *) set) |= (1L << ((sig)-1)))
# define __sigdelset(set, sig) (*((sigset_t *) set) &= ~(1L << ((sig)-1)))
#endif /* ! _SIGSET_H_fns. */
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