1 | /* Copyright (C) 2002-2024 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 * |
27 | tf (void *arg) |
28 | { |
29 | pthread_t mh = (pthread_t) arg; |
30 | void *result; |
31 | |
32 | if (pthread_mutex_unlock (mutex: &lock) != 0) |
33 | { |
34 | puts (s: "unlock failed" ); |
35 | exit (1); |
36 | } |
37 | |
38 | if (pthread_join (th: mh, thread_return: &result) != 0) |
39 | { |
40 | puts (s: "join failed" ); |
41 | exit (1); |
42 | } |
43 | |
44 | if (result != (void *) 42l) |
45 | { |
46 | printf (format: "result wrong: expected %p, got %p\n" , (void *) 42, result); |
47 | exit (1); |
48 | } |
49 | |
50 | exit (0); |
51 | } |
52 | |
53 | |
54 | static int |
55 | do_test (void) |
56 | { |
57 | pthread_t th; |
58 | |
59 | if (pthread_mutex_lock (mutex: &lock) != 0) |
60 | { |
61 | puts (s: "1st lock failed" ); |
62 | exit (1); |
63 | } |
64 | |
65 | if (pthread_create (newthread: &th, NULL, start_routine: tf, arg: (void *) pthread_self ()) != 0) |
66 | { |
67 | puts (s: "create failed" ); |
68 | exit (1); |
69 | } |
70 | |
71 | if (pthread_mutex_lock (mutex: &lock) != 0) |
72 | { |
73 | puts (s: "2nd lock failed" ); |
74 | exit (1); |
75 | } |
76 | |
77 | pthread_exit (retval: (void *) 42); |
78 | } |
79 | |
80 | #define TEST_FUNCTION do_test () |
81 | #include "../test-skeleton.c" |
82 | |