1 /* Unit tests for GRecMutex
2 * Copyright (C) 2011 Red Hat, Inc
3 * Author: Matthias Clasen
5 * This work is provided "as is"; redistribution and modification
6 * in whole or in part, in any medium, physical or electronic is
7 * permitted without restriction.
9 * This work 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.
13 * In no event shall the authors or contributors be liable for any
14 * direct, indirect, incidental, special, exemplary, or consequential
15 * damages (including, but not limited to, procurement of substitute
16 * goods or services; loss of use, data, or profits; or business
17 * interruption) however caused and on any theory of liability, whether
18 * in contract, strict liability, or tort (including negligence or
19 * otherwise) arising in any way out of the use of this software, even
20 * if advised of the possibility of such damage.
23 /* We are testing some deprecated APIs here */
24 #define GLIB_DISABLE_DEPRECATION_WARNINGS
31 test_rec_mutex1 (void)
35 g_rec_mutex_init (&mutex);
36 g_rec_mutex_lock (&mutex);
37 g_rec_mutex_unlock (&mutex);
38 g_rec_mutex_lock (&mutex);
39 g_rec_mutex_unlock (&mutex);
40 g_rec_mutex_clear (&mutex);
44 test_rec_mutex2 (void)
46 static GRecMutex mutex;
48 g_rec_mutex_lock (&mutex);
49 g_rec_mutex_unlock (&mutex);
50 g_rec_mutex_lock (&mutex);
51 g_rec_mutex_unlock (&mutex);
55 test_rec_mutex3 (void)
57 static GRecMutex mutex;
60 ret = g_rec_mutex_trylock (&mutex);
63 ret = g_rec_mutex_trylock (&mutex);
66 g_rec_mutex_unlock (&mutex);
67 g_rec_mutex_unlock (&mutex);
71 #define ITERATIONS 10000
75 GThread *owners[LOCKS];
76 GRecMutex locks[LOCKS];
83 self = g_thread_self ();
85 if (!g_rec_mutex_trylock (&locks[nr]))
87 if (g_test_verbose ())
88 g_print ("thread %p going to block on lock %d\n", self, nr);
90 g_rec_mutex_lock (&locks[nr]);
93 g_assert (owners[nr] == NULL); /* hopefully nobody else is here */
96 /* let some other threads try to ruin our day */
100 g_assert (owners[nr] == self); /* hopefully this is still us... */
102 if (g_test_verbose ())
103 g_print ("thread %p recursively taking lock %d\n", self, nr);
105 g_rec_mutex_lock (&locks[nr]); /* we're recursive, after all */
107 g_assert (owners[nr] == self); /* hopefully this is still us... */
109 g_rec_mutex_unlock (&locks[nr]);
114 g_assert (owners[nr] == self); /* hopefully this is still us... */
115 owners[nr] = NULL; /* make way for the next guy */
117 g_rec_mutex_unlock (&locks[nr]);
121 thread_func (gpointer data)
126 rand = g_rand_new ();
128 for (i = 0; i < ITERATIONS; i++)
129 acquire (g_rand_int_range (rand, 0, LOCKS));
137 test_rec_mutex4 (void)
140 GThread *threads[THREADS];
142 for (i = 0; i < LOCKS; i++)
143 g_rec_mutex_init (&locks[i]);
145 for (i = 0; i < THREADS; i++)
146 threads[i] = g_thread_create (thread_func, NULL, TRUE, NULL);
148 for (i = 0; i < THREADS; i++)
149 g_thread_join (threads[i]);
151 for (i = 0; i < LOCKS; i++)
152 g_rec_mutex_clear (&locks[i]);
154 for (i = 0; i < LOCKS; i++)
155 g_assert (owners[i] == NULL);
158 #define COUNT_TO 100000000
163 do_addition (gint *value)
165 static GRecMutex lock;
169 /* test performance of "good" cases (ie: short critical sections) */
170 for (i = 0; i < depth; i++)
171 g_rec_mutex_lock (&lock);
173 if ((more = *value != COUNT_TO))
177 for (i = 0; i < depth; i++)
178 g_rec_mutex_unlock (&lock);
184 addition_thread (gpointer value)
186 while (do_addition (value));
192 test_mutex_perf (gconstpointer data)
194 gint c = GPOINTER_TO_INT (data);
195 GThread *threads[THREADS];
205 for (i = 0; i < n_threads - 1; i++)
206 threads[i] = g_thread_create (addition_thread, &x, TRUE, NULL);
208 /* avoid measuring thread setup/teardown time */
209 start_time = g_get_monotonic_time ();
210 g_atomic_int_set (&x, 0);
211 addition_thread (&x);
212 g_assert_cmpint (g_atomic_int_get (&x), ==, COUNT_TO);
213 rate = g_get_monotonic_time () - start_time;
216 for (i = 0; i < n_threads - 1; i++)
217 g_thread_join (threads[i]);
219 g_test_maximized_result (rate, "%f mips", rate);
224 main (int argc, char *argv[])
226 g_test_init (&argc, &argv, NULL);
228 g_test_add_func ("/thread/rec-mutex1", test_rec_mutex1);
229 g_test_add_func ("/thread/rec-mutex2", test_rec_mutex2);
230 g_test_add_func ("/thread/rec-mutex3", test_rec_mutex3);
231 g_test_add_func ("/thread/rec-mutex4", test_rec_mutex4);
237 for (i = 0; i < 5; i++)
238 for (j = 1; j <= 5; j++)
246 sprintf (name, "/thread/rec-mutex/perf/contended%d/depth%d", i, j);
248 sprintf (name, "/thread/rec-mutex/perf/uncontended/depth%d", j);
250 g_test_add_data_func (name, GINT_TO_POINTER (c), test_mutex_perf);
254 return g_test_run ();