1  /* Implementation of the SLEEP intrinsic.
       2     Copyright (C) 2005-2023 Free Software Foundation, Inc.
       3     Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
       4  
       5  This file is part of the GNU Fortran 95 runtime library (libgfortran).
       6  
       7  Libgfortran is free software; you can redistribute it and/or
       8  modify it under the terms of the GNU General Public
       9  License as published by the Free Software Foundation; either
      10  version 3 of the License, or (at your option) any later version.
      11  
      12  Libgfortran is distributed in the hope that it will be useful,
      13  but WITHOUT ANY WARRANTY; without even the implied warranty of
      14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15  GNU General Public License for more details.
      16  
      17  Under Section 7 of GPL version 3, you are granted additional
      18  permissions described in the GCC Runtime Library Exception, version
      19  3.1, as published by the Free Software Foundation.
      20  
      21  You should have received a copy of the GNU General Public License and
      22  a copy of the GCC Runtime Library Exception along with this program;
      23  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      24  <http://www.gnu.org/licenses/>.  */
      25  
      26  #include "libgfortran.h"
      27  
      28  #ifdef HAVE_UNISTD_H
      29  #include <unistd.h>
      30  #endif
      31  
      32  #ifdef __MINGW32__
      33  # define WIN32_LEAN_AND_MEAN
      34  # include <windows.h>
      35  # undef sleep
      36  # define sleep(x) Sleep(1000*(x))
      37  # define HAVE_SLEEP 1
      38  #endif
      39  
      40  /* SUBROUTINE SLEEP(SECONDS)
      41     INTEGER, INTENT(IN) :: SECONDS
      42     
      43     A choice had to be made if SECONDS is negative. For g77, this is
      44     equivalent to SLEEP(0).  */
      45  
      46  #ifdef HAVE_SLEEP
      47  extern void sleep_i4_sub (GFC_INTEGER_4 *);
      48  iexport_proto(sleep_i4_sub);
      49  
      50  void
      51  sleep_i4_sub (GFC_INTEGER_4 *seconds)
      52  {
      53    sleep (*seconds < 0 ? 0 : (unsigned int) *seconds);
      54  }
      55  iexport(sleep_i4_sub);
      56  
      57  extern void sleep_i8_sub (GFC_INTEGER_8 *);
      58  iexport_proto(sleep_i8_sub);
      59  
      60  void
      61  sleep_i8_sub (GFC_INTEGER_8 *seconds)
      62  {
      63    sleep (*seconds < 0 ? 0 : (unsigned int) *seconds);
      64  }
      65  iexport(sleep_i8_sub);
      66  #endif