1  /* Provide a non-threads replacement for the POSIX raise function.
       2  
       3     Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
       4  
       5     This file is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU Lesser General Public License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     License, or (at your option) any later version.
       9  
      10     This file is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  /* written by Jim Meyering and Bruno Haible */
      19  
      20  #include <config.h>
      21  
      22  /* Specification.  */
      23  #include <signal.h>
      24  
      25  #if HAVE_RAISE
      26  /* Native Windows platform.  */
      27  
      28  # include <errno.h>
      29  
      30  # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
      31  #  include "msvc-inval.h"
      32  # endif
      33  
      34  # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
      35  /* Forward declaration.  */
      36  static int raise_nothrow (int sig);
      37  # else
      38  #  define raise_nothrow raise
      39  # endif
      40  
      41  #else
      42  /* An old Unix platform.  */
      43  
      44  # include <unistd.h>
      45  
      46  #endif
      47  
      48  int
      49  raise (int sig)
      50  #undef raise
      51  {
      52  #if GNULIB_defined_signal_blocking && GNULIB_defined_SIGPIPE
      53    if (sig == SIGPIPE)
      54      return _gl_raise_SIGPIPE ();
      55  #endif
      56  
      57  #if HAVE_RAISE
      58    return raise_nothrow (sig);
      59  #else
      60    return kill (getpid (), sig);
      61  #endif
      62  }
      63  
      64  #if HAVE_RAISE && HAVE_MSVC_INVALID_PARAMETER_HANDLER
      65  static int
      66  raise_nothrow (int sig)
      67  {
      68    int result;
      69  
      70    TRY_MSVC_INVAL
      71      {
      72        result = raise (sig);
      73      }
      74    CATCH_MSVC_INVAL
      75      {
      76        result = -1;
      77        errno = EINVAL;
      78      }
      79    DONE_MSVC_INVAL;
      80  
      81    return result;
      82  }
      83  #endif