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[glibc.git] / stdlib / exit.h
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1 /* Copyright (C) 1991, 1996, 1997, 1999, 2001 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #ifndef _EXIT_H
20 #define _EXIT_H 1
23 enum
25 ef_free, /* `ef_free' MUST be zero! */
26 ef_us,
27 ef_on,
28 ef_at,
29 ef_cxa
32 struct exit_function
34 /* `flavour' should be of type of the `enum' above but since we need
35 this element in an atomic operation we have to use `long int'. */
36 long int flavor;
37 union
39 void (*at) (void);
40 struct
42 void (*fn) (int status, void *arg);
43 void *arg;
44 } on;
45 struct
47 void (*fn) (void *arg, int status);
48 void *arg;
49 void *dso_handle;
50 } cxa;
51 } func;
53 struct exit_function_list
55 struct exit_function_list *next;
56 size_t idx;
57 struct exit_function fns[32];
59 extern struct exit_function_list *__exit_funcs;
61 extern struct exit_function *__new_exitfn (void);
63 #endif /* exit.h */