/* Implementation of the KILL g77 intrinsic.
   Copyright (C) 2005-2023 Free Software Foundation, Inc.
   Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>

This file is part of the GNU Fortran runtime library (libgfortran).

Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

Libgfortran 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 General Public License for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */

#include "libgfortran.h"
#include <errno.h>
#include <signal.h>


/* SUBROUTINE KILL(PID, SIGNAL, STATUS)
   INTEGER, INTENT(IN) :: PID, SIGNAL
   INTEGER(KIND=1), INTENT(OUT), OPTIONAL :: STATUS

   INTEGER FUNCTION KILL(PID, SIGNAL)
   INTEGER, INTENT(IN) :: PID, SIGNAL */

#ifdef HAVE_KILL
extern void kill_sub (GFC_INTEGER_4, GFC_INTEGER_4, GFC_INTEGER_4 *);
iexport_proto(kill_sub);

void
kill_sub (GFC_INTEGER_4 pid, GFC_INTEGER_4 signal, GFC_INTEGER_4 *status)
{
  int val;

  val = kill (pid, signal);

  if (status != NULL) 
    *status = (val == 0) ? 0 : errno;
}
iexport(kill_sub);

extern GFC_INTEGER_4 PREFIX (kill) (GFC_INTEGER_4, GFC_INTEGER_4);
export_proto_np(PREFIX (kill));

GFC_INTEGER_4
PREFIX (kill) (GFC_INTEGER_4 pid, GFC_INTEGER_4 signal)
{
  int val;
  val = (int)kill (pid, signal);
  return ((val == 0) ? 0 : errno);
}

#endif