blob: 426163dac6ae43ea952bccc5beb5a845da1896fe (
plain)
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
|
/* Copyright (C) 2002-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include "pthreadP.h"
#include <atomic.h>
int
__pthread_key_delete (pthread_key_t key)
{
int result = EINVAL;
if (__glibc_likely (key < PTHREAD_KEYS_MAX))
{
unsigned int seq = __pthread_keys[key].seq;
if (__builtin_expect (! KEY_UNUSED (seq), 1)
&& ! atomic_compare_and_exchange_bool_acq (&__pthread_keys[key].seq,
seq + 1, seq))
/* We deleted a valid key. */
result = 0;
}
return result;
}
weak_alias (__pthread_key_delete, pthread_key_delete)
|
GitWeb
