g_mutex_clear (&mutex);
}
+#define LOCKS 48
+#define ITERATIONS 10000
+#define THREADS 100
+
+
+GThread *owners[LOCKS];
+GMutex locks[LOCKS];
+gpointer ptrs[LOCKS];
+
+static void
+acquire (gint nr)
+{
+ GThread *self;
+
+ self = g_thread_self ();
+
+ if (!g_mutex_trylock (&locks[nr]))
+ {
+ if (g_test_verbose ())
+ g_print ("thread %p going to block on lock %d\n", self, nr);
+
+ g_mutex_lock (&locks[nr]);
+ }
+
+ g_assert (owners[nr] == NULL); /* hopefully nobody else is here */
+ owners[nr] = self;
+
+ /* let some other threads try to ruin our day */
+ g_thread_yield ();
+ g_thread_yield ();
+ g_thread_yield ();
+
+ g_assert (owners[nr] == self); /* hopefully this is still us... */
+ owners[nr] = NULL; /* make way for the next guy */
+
+ g_mutex_unlock (&locks[nr]);
+}
+
+static gpointer
+thread_func (gpointer data)
+{
+ gint i;
+ GRand *rand;
+
+ rand = g_rand_new ();
+
+ for (i = 0; i < ITERATIONS; i++)
+ acquire (g_rand_int_range (rand, 0, LOCKS));
+
+ g_rand_free (rand);
+
+ return NULL;
+}
+
+static void
+test_mutex5 (void)
+{
+ gint i;
+ GThread *threads[THREADS];
+
+ for (i = 0; i < LOCKS; i++)
+ g_mutex_init (&locks[i]);
+
+ for (i = 0; i < THREADS; i++)
+ threads[i] = g_thread_create (thread_func, NULL, TRUE, NULL);
+
+ for (i = 0; i < THREADS; i++)
+ g_thread_join (threads[i]);
+
+ for (i = 0; i < LOCKS; i++)
+ g_mutex_clear (&locks[i]);
+
+ for (i = 0; i < LOCKS; i++)
+ g_assert (owners[i] == NULL);
+}
+
int
main (int argc, char *argv[])
g_test_add_func ("/thread/mutex2", test_mutex2);
g_test_add_func ("/thread/mutex3", test_mutex3);
g_test_add_func ("/thread/mutex4", test_mutex4);
+ g_test_add_func ("/thread/mutex5", test_mutex5);
return g_test_run ();
}