linuxthreads/sysdeps/unix/sysv/linux/fork.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@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 <fork.h>
  22 #include <bits/libc-lock.h>
  23
  24 #ifndef SHARED
  25 weak_extern (__pthread_fork);
  26 #endif
  27
  28 struct fork_block __fork_block =
  29 {
  30   .lock = PTHREAD_MUTEX_INITIALIZER,
  31   .prepare_list = { &__fork_block.prepare_list, &__fork_block.prepare_list },
  32   .parent_list = { &__fork_block.parent_list, &__fork_block.parent_list },
  33   .child_list = { &__fork_block.child_list, &__fork_block.child_list }
  34 };
  35
  36 pid_t
  37 __libc_fork (void)
  38 {
  39   return __libc_maybe_call2 (pthread_fork, (&__fork_block), ARCH_FORK ());
  40 }
  41 weak_alias (__libc_fork, __fork)
  42 libc_hidden_def (__fork)
  43 weak_alias (__libc_fork, fork)