support/support_isolate_in_subprocess.c

   1 /* Run a function in a subprocess.
   2    Copyright (C) 2017-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <support/check.h>
  20 #include <support/xunistd.h>
  21
  22 void
  23 support_isolate_in_subprocess (void (*callback) (void *), void *closure)
  24 {
  25   pid_t pid = xfork ();
  26   if (pid == 0)
  27     {
  28       /* Child process.  */
  29       callback (closure);
  30       _exit (0);
  31     }
  32
  33   /* Parent process.  */
  34   int status;
  35   xwaitpid (pid, &status, 0);
  36   if (status != 0)
  37     FAIL_EXIT1 ("child process exited with status %d", status);
  38 }