1: /* Copyright (C) 2002, 2006 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:    In addition to the permissions in the GNU Lesser General Public
   11:    License, the Free Software Foundation gives you unlimited
   12:    permission to link the compiled version of this file with other
   13:    programs, and to distribute those programs without any restriction
   14:    coming from the use of this file. (The GNU Lesser General Public
   15:    License restrictions do apply in other respects; for example, they
   16:    cover modification of the file, and distribution when not linked
   17:    into another program.)
   18: 
   19:    Note that people who make modified versions of this file are not
   20:    obligated to grant this special exception for their modified
   21:    versions; it is their choice whether to do so. The GNU Lesser
   22:    General Public License gives permission to release a modified
   23:    version without this exception; this exception also makes it
   24:    possible to release a modified version which carries forward this
   25:    exception.
   26: 
   27:    The GNU C Library is distributed in the hope that it will be useful,
   28:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   29:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   30:    Lesser General Public License for more details.
   31: 
   32:    You should have received a copy of the GNU Lesser General Public
   33:    License along with the GNU C Library; if not, write to the Free
   34:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   35:    02111-1307 USA.  */
   36: 
   37: #include "pthreadP.h"
   38: #include <fork.h>
   39: 
   40: /* This is defined by newer gcc version unique for each module.  */
   41: extern void *__dso_handle __attribute__ ((__weak__,
   42:                                           __visibility__ ("hidden")));
   43: 
   44: 
   45: /* Hide the symbol so that no definition but the one locally in the
   46:    executable or DSO is used.  */
   47: int
   48: #ifndef __pthread_atfork
   49: /* Don't mark the compatibility function as hidden.  */
   50: attribute_hidden
   51: #endif
   52: __pthread_atfork (prepare, parent, child)
   53:      void (*prepare) (void);
   54:      void (*parent) (void);
   55:      void (*child) (void);
   56: {
   57:   return __register_atfork (prepare, parent, child,
   58:                             &__dso_handle == NULL ? NULL : __dso_handle);
   59: }
   60: #ifndef __pthread_atfork
   61: extern int pthread_atfork (void (*prepare) (void), void (*parent) (void),
   62:                            void (*child) (void)) attribute_hidden;
   63: strong_alias (__pthread_atfork, pthread_atfork)
   64: #endif