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/* This is file signal.h */
/* This file may have been modified by DJ Delorie (Jan 1991). If so,
** these modifications are Coyright (C) 1991 DJ Delorie, 24 Kirsten Ave,
** Rochester NH, 03867-2954, USA.
*/
/* This may look like C code, but it is really -*- C++ -*- */
/*
Copyright (C) 1989 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
This file is part of GNU CC.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY. No author or distributor
accepts responsibility to anyone for the consequences of using it
or for whether it serves any particular purpose or works at all,
unless he says so in writing. Refer to the GNU CC General Public
License for full details.
Everyone is granted permission to copy, modify and redistribute
GNU CC, but only under the conditions described in the
GNU CC General Public License. A copy of this license is
supposed to have been given to you along with GNU CC so you
can know your rights and responsibilities. It should be in a
file named COPYING. Among other things, the copyright notice
and this notice must be preserved on all copies.
*/
#ifndef _signal_h
#define _signal_h
#ifdef __cplusplus
extern "C" {
#endif
/* This #define KERNEL hack gets around bad function prototypes on most */
/* systems. If not, you need to do some real work... */
#define KERNEL
#include <sys/signal.h>
#undef KERNEL
/* The Interviews folks call this SignalHandler. Might as well conform. */
/* Beware: some systems think that SignalHandler returns int. */
typedef void (*SignalHandler) ();
extern SignalHandler signal(int sig, SignalHandler action);
extern SignalHandler sigset(int sig, SignalHandler action);
extern SignalHandler ssignal(int sig, SignalHandler action);
extern int gsignal (int sig);
extern int kill (int pid, int sig);
#ifndef hpux /* Interviews folks claim that hpux doesn't like these */
struct sigvec;
extern int sigsetmask(int mask);
extern int sigblock(int mask);
extern int sigpause(int mask);
extern int sigvec(int sig, struct sigvec* v, struct sigvec* prev);
#endif
/* The Interviews version also has these ... */
#define SignalBad ((SignalHandler)-1)
#define SignalDefault ((SignalHandler)0)
#define SignalIgnore ((SignalHandler)1)
/* Posix signal handling */
typedef int sigset_t;
struct sigaction
{
void (*sa_handler)();
sigset_t sa_mask;
int sa_flags;
};
extern int sigaction(int, struct sigaction *, struct sigaction *);
extern int sigemptyset(sigset_t *);
extern int sigfillset(sigset_t *);
extern int sigaddset(sigset_t *, int);
extern int sigdelset(sigset_t *, int);
extern int sigismember(sigset_t *, int);
#ifdef __cplusplus
}
#endif
#endif
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