g_rw_lock_clear (&lock);
}
+
+#define LOCKS 48
+#define ITERATIONS 10000
+#define THREADS 100
+
+
+GThread *owners[LOCKS];
+GRWLock locks[LOCKS];
+
+static void
+acquire (gint nr)
+{
+ GThread *self;
+
+ self = g_thread_self ();
+
+ if (!g_rw_lock_writer_trylock (&locks[nr]))
+ {
+ if (g_test_verbose ())
+ g_print ("thread %p going to block on lock %d\n", self, nr);
+
+ g_rw_lock_writer_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_rw_lock_writer_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_rwlock7 (void)
+{
+ gint i;
+ GThread *threads[THREADS];
+
+ for (i = 0; i < LOCKS; i++)
+ g_rw_lock_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_rw_lock_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/rwlock4", test_rwlock4);
g_test_add_func ("/thread/rwlock5", test_rwlock5);
g_test_add_func ("/thread/rwlock6", test_rwlock6);
+ g_test_add_func ("/thread/rwlock7", test_rwlock7);
return g_test_run ();
}