sysdeps/pthread/tst-atfork4mod.c

   1 /* pthread_atfork supports handlers that call pthread_atfork or dlclose.
   2    Copyright (C) 2022-2024 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 }