1/* Test that the key reuse inside libpthread does not cause thread
2 specific values to persist.
3 Copyright (C) 2000-2024 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
19
20#define _GNU_SOURCE 1
21
22#include <pthread.h>
23#include <stdio.h>
24#include <assert.h>
25#include <errno.h>
26
27void
28work (int iter)
29{
30 error_t err;
31 pthread_key_t key1;
32 pthread_key_t key2;
33 void *value1;
34 void *value2;
35
36 printf (format: "work/%d: start\n", iter);
37 err = pthread_key_create (key: &key1, NULL);
38 assert (err == 0);
39 err = pthread_key_create (key: &key2, NULL);
40 assert (err == 0);
41
42 value1 = pthread_getspecific (key: key1);
43 value2 = pthread_getspecific (key: key2);
44 printf (format: "work/%d: pre-setspecific: %p,%p\n", iter, value1, value2);
45 assert (value1 == NULL);
46 assert (value2 == NULL);
47 err = pthread_setspecific (key: key1, pointer: (void *) (0x100 + iter));
48 assert (err == 0);
49 err = pthread_setspecific (key: key2, pointer: (void *) (0x200 + iter));
50 assert (err == 0);
51
52 value1 = pthread_getspecific (key: key1);
53 value2 = pthread_getspecific (key: key2);
54 printf (format: "work/%d: post-setspecific: %p,%p\n", iter, value1, value2);
55 assert (value1 == (void *) (0x100 + iter));
56 assert (value2 == (void *) (0x200 + iter));
57
58 err = pthread_key_delete (key: key1);
59 assert (err == 0);
60 err = pthread_key_delete (key: key2);
61 assert (err == 0);
62}
63
64int
65main (int argc, char *argv[])
66{
67 int i;
68
69 for (i = 0; i < 8; ++i)
70 work (iter: i + 1);
71
72 return 0;
73}
74

source code of glibc/htl/tests/test-17.c