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#ifndef _EXIT_H
19#define _EXIT_H 1
20
21#include <stdbool.h>
22#include <stdint.h>
23
24enum
25{
26 ef_free, /* `ef_free' MUST be zero! */
27 ef_us,
28 ef_on,
29 ef_at,
30 ef_cxa
31};
32
33struct exit_function
34 {
35 /* `flavour' should be of type of the `enum' above but since we need
36 this element in an atomic operation we have to use `long int'. */
37 long int flavor;
38 union
39 {
40 void (*at) (void);
41 struct
42 {
43 void (*fn) (int status, void *arg);
44 void *arg;
45 } on;
46 struct
47 {
48 void (*fn) (void *arg, int status);
49 void *arg;
50 void *dso_handle;
51 } cxa;
52 } func;
53 };
54struct exit_function_list
55 {
56 struct exit_function_list *next;
57 size_t idx;
58 struct exit_function fns[32];
59 };
60extern struct exit_function_list *__exit_funcs attribute_hidden;
61extern struct exit_function_list *__quick_exit_funcs attribute_hidden;
62
63extern struct exit_function *__new_exitfn (struct exit_function_list **listp);
64extern uint64_t __new_exitfn_called attribute_hidden;
65
66extern void __run_exit_handlers (int status, struct exit_function_list **listp,
67 bool run_list_atexit)
68 attribute_hidden __attribute__ ((__noreturn__));
69
70extern int __internal_atexit (void (*func) (void *), void *arg, void *d,
71 struct exit_function_list **listp)
72 attribute_hidden;
73extern int __cxa_at_quick_exit (void (*func) (void *), void *d);
74
75
76#endif /* exit.h */
77