1/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <stdlib.h>
19#include "exit.h"
20#include <sysdep.h>
21
22/* Register a function to be called by exit. */
23int
24__on_exit (void (*func) (int status, void *arg), void *arg)
25{
26 struct exit_function *new;
27
28 __libc_lock_lock (__exit_funcs_lock);
29 new = __new_exitfn (&__exit_funcs);
30
31 if (new == NULL)
32 {
33 __libc_lock_unlock (__exit_funcs_lock);
34 return -1;
35 }
36
37#ifdef PTR_MANGLE
38 PTR_MANGLE (func);
39#endif
40 new->func.on.fn = func;
41 new->func.on.arg = arg;
42 new->flavor = ef_on;
43 __libc_lock_unlock (__exit_funcs_lock);
44 return 0;
45}
46weak_alias (__on_exit, on_exit)
47