]>
Commit | Line | Data |
---|---|---|
33574c17 | 1 | /* Test recursive mutexes. |
04277e02 | 2 | Copyright (C) 2000-2019 Free Software Foundation, Inc. |
33574c17 ST |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
ad2b41bf ST |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
33574c17 ST |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
ad2b41bf | 13 | Lesser General Public License for more details. |
33574c17 | 14 | |
ad2b41bf ST |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
33574c17 ST |
18 | |
19 | #define _GNU_SOURCE | |
20 | ||
21 | #include <pthread.h> | |
22 | #include <assert.h> | |
23 | #include <error.h> | |
24 | #include <errno.h> | |
25 | ||
26 | #define THREADS 10 | |
27 | ||
28 | int foo; | |
29 | ||
30 | void * | |
31 | thr (void *arg) | |
32 | { | |
33 | int i; | |
34 | ||
35 | pthread_mutex_lock (arg); | |
36 | ||
37 | foo = pthread_self (); | |
38 | ||
39 | for (i = 0; i < 500; i++) | |
40 | pthread_mutex_lock (arg); | |
41 | for (i = 0; i < 500; i++) | |
42 | pthread_mutex_unlock (arg); | |
43 | ||
44 | assert (foo == pthread_self ()); | |
45 | ||
46 | pthread_mutex_unlock (arg); | |
47 | ||
48 | return 0; | |
49 | } | |
50 | ||
51 | int | |
52 | main (int argc, char **argv) | |
53 | { | |
54 | error_t err; | |
55 | int i; | |
56 | pthread_t tid[THREADS]; | |
57 | pthread_mutexattr_t mattr; | |
58 | pthread_mutex_t mutex; | |
59 | ||
60 | err = pthread_mutexattr_init (&mattr); | |
61 | if (err) | |
62 | error (1, err, "pthread_mutexattr_init"); | |
63 | ||
64 | err = pthread_mutexattr_settype (&mattr, PTHREAD_MUTEX_RECURSIVE); | |
65 | if (err) | |
66 | error (1, err, "pthread_mutexattr_settype"); | |
67 | ||
68 | err = pthread_mutex_init (&mutex, &mattr); | |
69 | if (err) | |
70 | error (1, err, "pthread_mutex_init"); | |
71 | ||
72 | err = pthread_mutexattr_destroy (&mattr); | |
73 | if (err) | |
74 | error (1, err, "pthread_mutexattr_destroy"); | |
75 | ||
76 | pthread_mutex_lock (&mutex); | |
77 | pthread_mutex_lock (&mutex); | |
78 | pthread_mutex_unlock (&mutex); | |
79 | pthread_mutex_unlock (&mutex); | |
80 | ||
81 | for (i = 0; i < THREADS; i++) | |
82 | { | |
83 | err = pthread_create (&tid[i], 0, thr, &mutex); | |
84 | if (err) | |
85 | error (1, err, "pthread_create (%d)", i); | |
86 | } | |
87 | ||
88 | for (i = 0; i < THREADS; i++) | |
89 | { | |
90 | void *ret; | |
91 | ||
92 | err = pthread_join (tid[i], &ret); | |
93 | if (err) | |
94 | error (1, err, "pthread_join"); | |
95 | ||
96 | assert (ret == 0); | |
97 | } | |
98 | ||
99 | err = pthread_mutex_destroy (&mutex); | |
100 | if (err) | |
101 | error (1, err, "pthread_mutex_destroy"); | |
102 | ||
103 | return 0; | |
104 | } |