1 | /* Copyright (C) 1991-2016 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 <atomic.h> |
21 | #include <sysdep.h> |
22 | |
23 | /* Register a function to be called by exit. */ |
24 | int |
25 | __on_exit (void (*func) (int status, void *arg), void *arg) |
26 | { |
27 | struct exit_function *new = __new_exitfn (&__exit_funcs); |
28 | |
29 | if (new == NULL) |
30 | return -1; |
31 | |
32 | #ifdef PTR_MANGLE |
33 | PTR_MANGLE (func); |
34 | #endif |
35 | new->func.on.fn = func; |
36 | new->func.on.arg = arg; |
37 | atomic_write_barrier (); |
38 | new->flavor = ef_on; |
39 | return 0; |
40 | } |
41 | weak_alias (__on_exit, on_exit) |
42 | |