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552cc11b | 1 | /* |
de42bf35 | 2 | * Copyright (C) 2013 Tobias Brunner |
552cc11b MW |
3 | * Copyright (C) 2008 Martin Willi |
4 | * Hochschule fuer Technik Rapperswil | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | * for more details. | |
15 | */ | |
16 | ||
552cc11b MW |
17 | #include <sched.h> |
18 | #include <pthread.h> | |
19 | ||
95e99150 TB |
20 | #include "test_suite.h" |
21 | ||
de42bf35 | 22 | #include <threading/mutex.h> |
552cc11b | 23 | |
de42bf35 TB |
24 | /******************************************************************************* |
25 | * recursive mutex test | |
26 | */ | |
552cc11b | 27 | |
de42bf35 TB |
28 | #define THREADS 20 |
29 | ||
30 | static mutex_t *mutex; | |
552cc11b | 31 | |
de42bf35 | 32 | static pthread_barrier_t mutex_barrier; |
552cc11b | 33 | |
de42bf35 | 34 | static int mutex_locked = 0; |
552cc11b | 35 | |
de42bf35 | 36 | static void *mutex_run(void *data) |
552cc11b MW |
37 | { |
38 | int i; | |
39 | ||
40 | /* wait for all threads before getting in action */ | |
de42bf35 | 41 | pthread_barrier_wait(&mutex_barrier); |
552cc11b MW |
42 | |
43 | for (i = 0; i < 100; i++) | |
44 | { | |
45 | mutex->lock(mutex); | |
46 | mutex->lock(mutex); | |
47 | mutex->lock(mutex); | |
de42bf35 | 48 | mutex_locked++; |
552cc11b | 49 | sched_yield(); |
de42bf35 | 50 | if (mutex_locked > 1) |
552cc11b | 51 | { |
de42bf35 | 52 | fail("two threads locked the mutex concurrently"); |
7daf5226 | 53 | } |
de42bf35 | 54 | mutex_locked--; |
552cc11b MW |
55 | mutex->unlock(mutex); |
56 | mutex->unlock(mutex); | |
57 | mutex->unlock(mutex); | |
58 | } | |
59 | return NULL; | |
60 | } | |
61 | ||
de42bf35 | 62 | START_TEST(test_mutex) |
552cc11b | 63 | { |
552cc11b | 64 | pthread_t threads[THREADS]; |
de42bf35 | 65 | int i; |
7daf5226 | 66 | |
3901937d | 67 | mutex = mutex_create(MUTEX_TYPE_RECURSIVE); |
7daf5226 | 68 | |
552cc11b MW |
69 | for (i = 0; i < 10; i++) |
70 | { | |
71 | mutex->lock(mutex); | |
72 | mutex->unlock(mutex); | |
73 | } | |
74 | for (i = 0; i < 10; i++) | |
75 | { | |
76 | mutex->lock(mutex); | |
77 | } | |
78 | for (i = 0; i < 10; i++) | |
79 | { | |
80 | mutex->unlock(mutex); | |
81 | } | |
7daf5226 | 82 | |
de42bf35 | 83 | pthread_barrier_init(&mutex_barrier, NULL, THREADS); |
552cc11b MW |
84 | for (i = 0; i < THREADS; i++) |
85 | { | |
de42bf35 | 86 | pthread_create(&threads[i], NULL, mutex_run, NULL); |
552cc11b MW |
87 | } |
88 | for (i = 0; i < THREADS; i++) | |
89 | { | |
90 | pthread_join(threads[i], NULL); | |
91 | } | |
de42bf35 | 92 | pthread_barrier_destroy(&mutex_barrier); |
7daf5226 | 93 | |
552cc11b | 94 | mutex->destroy(mutex); |
552cc11b | 95 | } |
de42bf35 | 96 | END_TEST |
552cc11b | 97 | |
de42bf35 TB |
98 | Suite *threading_suite_create() |
99 | { | |
100 | Suite *s; | |
101 | TCase *tc; | |
102 | ||
103 | s = suite_create("threading"); | |
104 | ||
105 | tc = tcase_create("recursive mutex"); | |
106 | tcase_add_test(tc, test_mutex); | |
107 | suite_add_tcase(s, tc); | |
108 | ||
109 | return s; | |
110 | } |