Update.
[glibc.git] / stdlib / cxa_finalize.c
blob2339c7b5bd521ca8c04ef6bf52968ad6fb9aa3fc
1 /* Copyright (C) 1999, 2001, 2002, 2003 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 #include <assert.h>
20 #include <stdlib.h>
21 #include <atomic.h>
22 #include "exit.h"
23 #include <fork.h>
25 /* If D is non-NULL, call all functions registered with `__cxa_atexit'
26 with the same dso handle. Otherwise, if D is NULL, call all of the
27 registered handlers. */
28 void
29 __cxa_finalize (void *d)
31 struct exit_function_list *funcs;
33 for (funcs = __exit_funcs; funcs; funcs = funcs->next)
35 struct exit_function *f;
37 for (f = &funcs->fns[funcs->idx - 1]; f >= &funcs->fns[0]; --f)
38 if ((d == NULL || d == f->func.cxa.dso_handle)
39 /* We don't want to run this cleanup more than once. */
40 && ! atomic_compare_and_exchange_bool_acq (&f->flavor, ef_free,
41 ef_cxa))
42 (*f->func.cxa.fn) (f->func.cxa.arg, 0);
45 /* Remove the registered fork handlers. We do not have to
46 unregister anything if the program is going to terminate anyway. */
47 #ifdef UNREGISTER_ATFORK
48 if (d != NULL)
49 UNREGISTER_ATFORK (d);
50 #endif