blob: ce4d6620986ff9515782d5720dc994c2b381b9af (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/* Copyright (C) 1991-2019 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 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.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <stdlib.h>
#include "exit.h"
#include <sysdep.h>
/* Register a function to be called by exit. */
int
__on_exit (void (*func) (int status, void *arg), void *arg)
{
struct exit_function *new;
/* As a QoI issue we detect NULL early with an assertion instead
of a SIGSEGV at program exit when the handler is run (bug 20544). */
assert (func != NULL);
__libc_lock_lock (__exit_funcs_lock);
new = __new_exitfn (&__exit_funcs);
if (new == NULL)
{
__libc_lock_unlock (__exit_funcs_lock);
return -1;
}
#ifdef PTR_MANGLE
PTR_MANGLE (func);
#endif
new->func.on.fn = func;
new->func.on.arg = arg;
new->flavor = ef_on;
__libc_lock_unlock (__exit_funcs_lock);
return 0;
}
weak_alias (__on_exit, on_exit)
|
