1  /* pthread_atfork supports handlers that call pthread_atfork or dlclose.
       2     Copyright (C) 2022-2023 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 <pthread.h>
      20  #include <stdlib.h>
      21  
      22  /* This dynamically loaded library simply registers its atfork handlers when
      23     asked to.  The atfork handlers should never be executed because the
      24     library is unloaded before fork is called by the test program.  */
      25  
      26  static void
      27  prepare (void)
      28  {
      29    abort ();
      30  }
      31  
      32  static void
      33  parent (void)
      34  {
      35    abort ();
      36  }
      37  
      38  static void
      39  child (void)
      40  {
      41    abort ();
      42  }
      43  
      44  void
      45  reg_atfork_handlers (void)
      46  {
      47    pthread_atfork (prepare, parent, child);
      48  }