1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <pthread.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21
22
23 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
24
25
26 static void *
tf(void * arg)27 tf (void *arg)
28 {
29 pthread_t mh = (pthread_t) arg;
30 void *result;
31
32 if (pthread_mutex_unlock (&lock) != 0)
33 {
34 puts ("unlock failed");
35 exit (1);
36 }
37
38 if (pthread_join (mh, &result) != 0)
39 {
40 puts ("join failed");
41 exit (1);
42 }
43
44 if (result != (void *) 42l)
45 {
46 printf ("result wrong: expected %p, got %p\n", (void *) 42, result);
47 exit (1);
48 }
49
50 exit (0);
51 }
52
53
54 static int
do_test(void)55 do_test (void)
56 {
57 pthread_t th;
58
59 if (pthread_mutex_lock (&lock) != 0)
60 {
61 puts ("1st lock failed");
62 exit (1);
63 }
64
65 if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
66 {
67 puts ("create failed");
68 exit (1);
69 }
70
71 if (pthread_mutex_lock (&lock) != 0)
72 {
73 puts ("2nd lock failed");
74 exit (1);
75 }
76
77 pthread_exit ((void *) 42);
78 }
79
80 #define TEST_FUNCTION do_test ()
81 #include "../test-skeleton.c"
82