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  $   !ˆl–Ðz¾”*ClÊq@‚àCq¦TÅ£Å„ hÁ¿É 2ð    !/* Copyright (C) 1991-2021 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/*
 *	ISO C99 Standard: 7.14 Signal handling <signal.h>
 */

#ifndef	_SIGNAL_H
#define _SIGNAL_H

#include <features.h>

__BEGIN_DECLS

#include <bits/types.h>
#include <bits/signum-generic.h>

#include <bits/types/sig_atomic_t.h>

#if defined __USE_POSIX
#include <bits/types/sigset_t.h>
#endif

#if defined __USE_XOPEN || defined __USE_XOPEN2K
# ifndef __pid_t_defined
typedef __pid_t pid_t;
#  define __pid_t_defined
#endif
#ifdef __USE_XOPEN
# endif
# ifndef __uid_t_defined
typedef __uid_t uid_t;
#  define __uid_t_defined
# endif
#endif	/* Unix98 */

#ifdef __USE_POSIX199309
/* We need `struct timespec' later on.  */
# include <bits/types/struct_timespec.h>
#endif

#if defined __USE_POSIX199309 || defined __USE_XOPEN_EXTENDED
# include <bits/types/siginfo_t.h>
# include <bits/siginfo-consts.h>
#endif

#ifdef __USE_MISC
# include <bits/types/sigval_t.h>
#endif

#ifdef __USE_POSIX199309
# include <bits/types/sigevent_t.h>
# include <bits/sigevent-consts.h>
#endif


/* Type of a signal handler.  */
typedef void (*__sighandler_t) (int);

/* The X/Open definition of `signal' specifies the SVID semantic.  Use
   the additional function `sysv_signal' when X/Open compatibility is
   requested.  */
extern __sighandler_t __sysv_signal (int __sig, __sighandler_t __handler)
     __THROW;
#ifdef __USE_GNU
extern __sighandler_t sysv_signal (int __sig, __sighandler_t __handler)
     __THROW;
#endif

/* Set the handler for the signal SIG to HANDLER, returning the old
   handler, or SIG_ERR on error.
   By default `signal' has the BSD semantic.  */
#ifdef __USE_MISC
extern __sighandler_t signal (int __sig, __sighandler_t __handler)
     __THROW;
#else
/* Make sure the used `signal' implementation is the SVID version. */
# ifdef __REDIRECT_NTH
extern __sighandler_t __REDIRECT_NTH (signal,
				      (int __sig, __sighandler_t __handler),
				      __sysv_signal);
# else
#  define signal __sysv_signal
# endif
#endif

#if defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8
/* The X/Open definition of `signal' conflicts with the BSD version.
   So they defined another function `bsd_signal'.  */
extern __sighandler_t bsd_signal (int __sig, __sighandler_t __handler)
     __THROW;
#endif

/* Send signal SIG to process number PID.  If PID is zero,
   send SIG to all processes in the current process's process group.
   If PID is < -1, send SIG to all processes in process group - PID.  */
#ifdef __USE_POSIX
extern int kill (__pid_t __pid, int __sig) __THROW;
#endif /* Use POSIX.  */

#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
/* Send SIG to all processes in process group PGRP.
   If PGRP is zero, send SIG to all processes in
   the current process's process group.  */
extern int killpg (__pid_t __pgrp, int __sig) __THROW;
#endif /* Use misc || X/Open Unix.  */

/* Raise signal SIG, i.e., send SIG to yourself.  */
extern int raise (int __sig) __THROW;

#ifdef __USE_MISC
/* SVID names for the same things.  */
extern __sighandler_t ssignal (int __sig, __sighandler_t __handler)
     __THROW;
extern int gsignal (int __sig) __THROW;
#endif /* Use misc.  */

#ifdef __USE_XOPEN2K8
/* Print a message describing the meaning of the given signal number.  */
extern void psignal (int __sig, const c