/* __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 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. */