-/* Copyright (C) 1991, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
-#include <libc-lock.h>
#include <stdlib.h>
+#include <dso_handle.h>
#include "exit.h"
-
/* Register FUNC to be executed by `exit'. */
int
+#ifndef atexit
+attribute_hidden
+#endif
atexit (void (*func) (void))
{
- struct exit_function *new = __new_exitfn ();
-
- if (new == NULL)
- return -1;
-
- new->flavor = ef_at;
- new->func.at = func;
- return 0;
-}
-
-
-/* We change global data, so we need locking. */
-__libc_lock_define_initialized (static, lock)
-
-
-static struct exit_function_list fnlist = { NULL, 0, };
-struct exit_function_list *__exit_funcs = &fnlist;
-
-struct exit_function *
-__new_exitfn (void)
-{
- struct exit_function_list *l;
- size_t i = 0;
-
- __libc_lock_lock (lock);
-
- for (l = __exit_funcs; l != NULL; l = l->next)
- {
- for (i = 0; i < l->idx; ++i)
- if (l->fns[i].flavor == ef_free)
- break;
- if (i < l->idx)
- break;
-
- if (l->idx < sizeof (l->fns) / sizeof (l->fns[0]))
- {
- i = l->idx++;
- break;
- }
- }
-
- if (l == NULL)
- {
- l = (struct exit_function_list *)
- malloc (sizeof (struct exit_function_list));
- if (l != NULL)
- {
- l->next = __exit_funcs;
- __exit_funcs = l;
-
- l->idx = 1;
- i = 0;
- }
- }
-
- /* Mark entry as used, but we don't know the flavor now. */
- if (l != NULL)
- l->fns[i].flavor = ef_us;
-
- __libc_lock_unlock (lock);
-
- return l == NULL ? NULL : &l->fns[i];
+ return __cxa_atexit ((void (*) (void *)) func, NULL, __dso_handle);
}