1 /* Copyright (C) 1991-2013 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, see
16 <http://www.gnu.org/licenses/>. */
24 #include "set-hooks.h"
25 DEFINE_HOOK (__libc_atexit, (void))
28 /* Call all functions registered with `atexit' and `on_exit',
29 in the reverse of the order in which they were registered
30 perform stdio cleanup, and terminate program execution with STATUS. */
33 __run_exit_handlers (int status, struct exit_function_list **listp,
36 /* First, call the TLS destructors. */
38 if (&__call_tls_dtors != NULL)
42 /* We do it this way to handle recursive calls to exit () made by
43 the functions registered with `atexit' and `on_exit'. We call
44 everyone on the list and use the status value in the last
46 while (*listp != NULL)
48 struct exit_function_list *cur = *listp;
52 const struct exit_function *const f =
53 &cur->fns[--cur->idx];
57 void (*onfct) (int status, void *arg);
58 void (*cxafct) (void *arg, int status);
64 onfct = f->func.on.fn;
68 onfct (status, f->func.on.arg);
78 cxafct = f->func.cxa.fn;
80 PTR_DEMANGLE (cxafct);
82 cxafct (f->func.cxa.arg, status);
89 /* Don't free the last element in the chain, this is the statically
95 RUN_HOOK (__libc_atexit, ());
104 __run_exit_handlers (status, &__exit_funcs, true);
106 libc_hidden_def (exit)