glibc/nptl/sysdeps/unix/sysv/linux/libc_pthread_init.c

/* Copyright (C) 2002 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <list.h>
#include "fork.h"
#include <bits/libc-lock.h>


static struct fork_handler pthread_child_handler;

/* Global variable signalled when locking is needed.  */
int __libc_locking_needed;


void
__libc_pthread_init (ptr, reclaim)
     unsigned long int *ptr;
     void (*reclaim) (void);
{
  /* Remember the pointer to the generation counter in libpthread.  */
  __fork_generation_pointer = ptr;

  /* Called by a child after fork.  */
  pthread_child_handler.handler = reclaim;

  /* The fork handler needed by libpthread.  */
  list_add_tail (&pthread_child_handler.list, &__fork_child_list);

  /* Signal the internal locking code that locking is needed now.  */
  __libc_locking_needed = 1;
}