1 /* Verify that TLS access in separate thread in a dlopened library does not
2 deadlock - the module.
3 Copyright (C) 2015-2021 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 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <pthread.h>
24 #include <atomic.h>
25
26 static pthread_t th;
27 static int running = 1;
28
29 static void *
test_run(void * p)30 test_run (void *p)
31 {
32 while (atomic_load_relaxed (&running))
33 printf ("Test running\n");
34 printf ("Test finished\n");
35 return NULL;
36 }
37
38 static void __attribute__ ((constructor))
do_init(void)39 do_init (void)
40 {
41 int ret = pthread_create (&th, NULL, test_run, NULL);
42
43 if (ret != 0)
44 {
45 printf ("failed to create thread: %s (%d)\n", strerror (ret), ret);
46 exit (1);
47 }
48 }
49
50 static void __attribute__ ((destructor))
do_end(void)51 do_end (void)
52 {
53 atomic_store_relaxed (&running, 0);
54 int ret = pthread_join (th, NULL);
55
56 if (ret != 0)
57 {
58 printf ("pthread_join: %s(%d)\n", strerror (ret), ret);
59 exit (1);
60 }
61
62 printf ("Thread joined\n");
63 }
64