/* Copyright (C) 1991-2018 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 <stdlib.h>

#include "exit.h"

#include <sysdep.h>

/* Register a function to be called by exit.  */

int

__on_exit (void (*func) (int status, void *arg), void *arg)

{

  struct exit_function *new;

   __libc_lock_lock (__exit_funcs_lock);

  new = __new_exitfn (&__exit_funcs);

  if (new == NULL)

    {

      __libc_lock_unlock (__exit_funcs_lock);

      return -1;

    }

#ifdef PTR_MANGLE

  PTR_MANGLE (func);

#endif

  new->func.on.fn = func;

  new->func.on.arg = arg;

  new->flavor = ef_on;

  __libc_lock_unlock (__exit_funcs_lock);

  return 0;

}

weak_alias (__on_exit, on_exit)