glibc/sysdeps/htl/pt-atfork.c

/* Register fork handlers.  Generic version.
   Copyright (C) 2002-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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, see
   <http://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <pt-internal.h>
#include <fork.h>

/* This is defined by newer gcc version unique for each module.  */
extern void *__dso_handle __attribute__ ((__weak__, __visibility__ ("hidden")));

int
pthread_atfork (void (*prepare) (void),
		void (*parent) (void),
		void (*child) (void))
{
  return __register_atfork (prepare, parent, child,
			    &__dso_handle == NULL ? NULL : __dso_handle);
}