linuxthreads/sysdeps/unix/sysv/linux/unregister-atfork.c

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <stdlib.h>
  22 #include "fork.h"
  23
  24
  25 void
  26 __unregister_atfork (dso_handle)
  27      void *dso_handle;
  28 {
  29   /* Get the lock to not conflict with running forks.  */
  30   __libc_lock_lock (__fork_block.lock);
  31
  32   list_t *runp;
  33   list_t *prevp;
  34
  35   list_for_each_prev_safe (runp, prevp, &__fork_block.prepare_list)
  36     if (list_entry (runp, struct fork_handler, list)->dso_handle == dso_handle)
  37       list_del (runp);
  38
  39   list_for_each_prev_safe (runp, prevp, &__fork_block.parent_list)
  40     if (list_entry (runp, struct fork_handler, list)->dso_handle == dso_handle)
  41       list_del (runp);
  42
  43   list_for_each_prev_safe (runp, prevp, &__fork_block.child_list)
  44     if (list_entry (runp, struct fork_handler, list)->dso_handle == dso_handle)
  45       list_del (runp);
  46
  47   /* Release the lock.  */
  48   __libc_lock_unlock (__fork_block.lock);
  49 }