--- /dev/null
+/* Regression test for thread-safe reference-counting
+ *
+ * Author: Simon McVittie <simon.mcvittie@collabora.co.uk>
+ * Copyright © 2011 Nokia Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <glib.h>
+
+#define DBUS_COMPILATION /* this test uses libdbus-internal */
+#include <dbus/dbus.h>
+#include <dbus/dbus-connection-internal.h>
+#include <dbus/dbus-mainloop.h>
+#include <dbus/dbus-message-internal.h>
+#include <dbus/dbus-pending-call-internal.h>
+#include <dbus/dbus-server-protected.h>
+#include "test-utils.h"
+
+static void
+assert_no_error (const DBusError *e)
+{
+ if (G_UNLIKELY (dbus_error_is_set (e)))
+ g_error ("expected success but got error: %s: %s", e->name, e->message);
+}
+
+#define N_THREADS 200
+#define N_REFS 10000
+G_STATIC_ASSERT (((unsigned) N_THREADS * (unsigned) N_REFS) < G_MAXINT32);
+
+static dbus_int32_t connection_slot = -1;
+static dbus_int32_t server_slot = -1;
+static dbus_int32_t message_slot = -1;
+static dbus_int32_t pending_call_slot = -1;
+
+typedef struct {
+ DBusError e;
+ DBusLoop *loop;
+ DBusServer *server;
+ DBusConnection *connection;
+ DBusConnection *server_connection;
+ DBusMessage *message;
+ GThread *threads[N_THREADS];
+ gboolean last_unref;
+} Fixture;
+
+typedef void *(*RefFunc) (void *);
+typedef void (*VoidFunc) (void *);
+
+typedef struct {
+ void *thing;
+ RefFunc ref;
+ VoidFunc ref_void;
+ VoidFunc unref;
+ void *mutex;
+ VoidFunc lock;
+ VoidFunc unlock;
+} Thread;
+
+static gpointer
+ref_thread (gpointer data)
+{
+ Thread *thread = data;
+ int i;
+
+ for (i = 0; i < N_REFS; i++)
+ {
+ if (thread->lock != NULL)
+ (thread->lock) (thread->mutex);
+
+ if (thread->ref != NULL)
+ {
+ gpointer ret = (thread->ref) (thread->thing);
+
+ g_assert (ret == thread->thing);
+ }
+ else
+ {
+ (thread->ref_void) (thread->thing);
+ }
+
+ if (thread->unlock != NULL)
+ (thread->unlock) (thread->mutex);
+ }
+
+ return NULL;
+}
+
+static gpointer
+cycle_thread (gpointer data)
+{
+ Thread *thread = data;
+ int i;
+
+ for (i = 0; i < N_REFS; i++)
+ {
+ if (thread->lock != NULL)
+ (thread->lock) (thread->mutex);
+
+ if (thread->ref != NULL)
+ {
+ gpointer ret = (thread->ref) (thread->thing);
+
+ g_assert (ret == thread->thing);
+ }
+ else
+ {
+ (thread->ref_void) (thread->thing);
+ }
+
+ (thread->unref) (thread->thing);
+
+ if (thread->unlock != NULL)
+ (thread->unlock) (thread->mutex);
+ }
+
+ return NULL;
+}
+
+static gpointer
+unref_thread (gpointer data)
+{
+ Thread *thread = data;
+ int i;
+
+ for (i = 0; i < N_REFS; i++)
+ {
+ if (thread->lock != NULL)
+ (thread->lock) (thread->mutex);
+
+ (thread->unref) (thread->thing);
+
+ if (thread->unlock != NULL)
+ (thread->unlock) (thread->mutex);
+ }
+
+ return NULL;
+}
+
+static void
+last_unref (void *data)
+{
+ Fixture *f = data;
+
+ g_assert (!f->last_unref);
+ f->last_unref = TRUE;
+}
+
+static void
+wait_for_all_threads (Fixture *f)
+{
+ int i;
+
+ for (i = 0; i < N_THREADS; i++)
+ g_thread_join (f->threads[i]);
+}
+
+static void
+new_conn_cb (DBusServer *server,
+ DBusConnection *server_connection,
+ void *data)
+{
+ Fixture *f = data;
+ dbus_bool_t have_mem;
+
+ g_assert (f->server_connection == NULL);
+ f->server_connection = dbus_connection_ref (server_connection);
+
+ test_connection_setup (f->loop, f->server_connection);
+}
+
+static void
+setup (Fixture *f,
+ gconstpointer data)
+{
+ if (!dbus_threads_init_default ())
+ g_error ("OOM");
+
+ f->loop = _dbus_loop_new ();
+ g_assert (f->loop != NULL);
+
+ dbus_error_init (&f->e);
+
+ f->server = dbus_server_listen ("tcp:host=127.0.0.1", &f->e);
+ assert_no_error (&f->e);
+ g_assert (f->server != NULL);
+
+ if (!dbus_connection_allocate_data_slot (&connection_slot))
+ g_error ("OOM");
+
+ if (!dbus_server_allocate_data_slot (&server_slot))
+ g_error ("OOM");
+
+ if (!dbus_message_allocate_data_slot (&message_slot))
+ g_error ("OOM");
+
+ if (!dbus_pending_call_allocate_data_slot (&pending_call_slot))
+ g_error ("OOM");
+}
+
+static void
+setup_connection (Fixture *f,
+ gconstpointer data)
+{
+ char *address;
+
+ setup (f, data);
+
+ dbus_server_set_new_connection_function (f->server,
+ new_conn_cb, f, NULL);
+
+ if (!test_server_setup (f->loop, f->server))
+ g_error ("failed to set up server");
+
+ address = dbus_server_get_address (f->server);
+ g_assert (address != NULL);
+ f->connection = dbus_connection_open_private (address, &f->e);
+ assert_no_error (&f->e);
+ g_assert (f->connection != NULL);
+ dbus_free (address);
+
+ if (!test_connection_setup (f->loop, f->connection))
+ g_error ("failed to set up connection");
+
+ while (f->server_connection == NULL)
+ _dbus_loop_iterate (f->loop, TRUE);
+
+ test_connection_shutdown (f->loop, f->connection);
+ test_server_shutdown (f->loop, f->server);
+}
+
+static void
+test_connection (Fixture *f,
+ gconstpointer data)
+{
+ Thread public_api = { f->connection,
+ (RefFunc) dbus_connection_ref,
+ NULL,
+ (VoidFunc) dbus_connection_unref,
+ NULL,
+ NULL,
+ NULL };
+ Thread internal_api = { f->connection,
+ (RefFunc) _dbus_connection_ref_unlocked,
+ NULL,
+ (VoidFunc) _dbus_connection_unref_unlocked,
+ f->connection,
+ (VoidFunc) _dbus_connection_lock,
+ (VoidFunc) _dbus_connection_unlock };
+ int i;
+
+ /* Use a slot as a pseudo-weakref */
+ if (!dbus_connection_set_data (f->connection, connection_slot, f,
+ last_unref))
+ g_error ("OOM");
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (ref_thread, &public_api, TRUE, NULL);
+ else
+ f->threads[i] = g_thread_create (ref_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (cycle_thread, &public_api, TRUE,
+ NULL);
+ else
+ f->threads[i] = g_thread_create (cycle_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (unref_thread, &public_api, TRUE,
+ NULL);
+ else
+ f->threads[i] = g_thread_create (unref_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ /* Destroy the connection. This should be the last-unref. */
+ g_assert (!f->last_unref);
+ dbus_connection_close (f->connection);
+ dbus_connection_unref (f->connection);
+ f->connection = NULL;
+ g_assert (f->last_unref);
+}
+
+static void
+server_lock (void *server)
+{
+ SERVER_LOCK (((DBusServer *) server));
+}
+
+static void
+server_unlock (void *server)
+{
+ SERVER_UNLOCK (((DBusServer *) server));
+}
+
+static void
+test_server (Fixture *f,
+ gconstpointer data)
+{
+ Thread public_api = { f->server,
+ (RefFunc) dbus_server_ref,
+ NULL,
+ (VoidFunc) dbus_server_unref,
+ NULL,
+ NULL,
+ NULL };
+ Thread internal_api = { f->server,
+ NULL,
+ (VoidFunc) _dbus_server_ref_unlocked,
+ (VoidFunc) _dbus_server_unref_unlocked,
+ f->server,
+ server_lock,
+ server_unlock };
+ int i;
+
+ if (!dbus_server_set_data (f->server, server_slot, f, last_unref))
+ g_error ("OOM");
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (ref_thread, &public_api, TRUE, NULL);
+ else
+ f->threads[i] = g_thread_create (ref_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (cycle_thread, &public_api, TRUE,
+ NULL);
+ else
+ f->threads[i] = g_thread_create (cycle_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (unref_thread, &public_api, TRUE,
+ NULL);
+ else
+ f->threads[i] = g_thread_create (unref_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ /* Destroy the server. This should be the last-unref. */
+ g_assert (!f->last_unref);
+ dbus_server_disconnect (f->server);
+ dbus_server_unref (f->server);
+ f->server = NULL;
+ g_assert (f->last_unref);
+}
+
+static void
+test_message (Fixture *f,
+ gconstpointer data)
+{
+ DBusMessage *message = dbus_message_new_signal ("/foo", "foo.bar.baz",
+ "Foo");
+ Thread public_api = { message,
+ (RefFunc) dbus_message_ref,
+ NULL,
+ (VoidFunc) dbus_message_unref,
+ NULL,
+ NULL,
+ NULL };
+ int i;
+
+ if (!dbus_message_set_data (message, message_slot, f, last_unref))
+ g_error ("OOM");
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ f->threads[i] = g_thread_create (ref_thread, &public_api, TRUE, NULL);
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ f->threads[i] = g_thread_create (cycle_thread, &public_api, TRUE, NULL);
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ f->threads[i] = g_thread_create (unref_thread, &public_api, TRUE, NULL);
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ /* Destroy the server. This should be the last-unref. */
+ g_assert (!f->last_unref);
+ dbus_message_unref (message);
+ g_assert (f->last_unref);
+}
+
+static void
+test_pending_call (Fixture *f,
+ gconstpointer data)
+{
+ Thread public_api = { NULL,
+ (RefFunc) dbus_pending_call_ref,
+ NULL,
+ (VoidFunc) dbus_pending_call_unref,
+ NULL,
+ NULL,
+ NULL };
+ Thread internal_api = { NULL,
+ (RefFunc) _dbus_pending_call_ref_unlocked,
+ NULL,
+ (VoidFunc) dbus_pending_call_unref,
+ f->connection,
+ (VoidFunc) _dbus_connection_lock,
+ (VoidFunc) _dbus_connection_unlock };
+ /* This one can't be used to ref, only to cycle or unref. */
+ Thread unref_and_unlock_api = { NULL,
+ (RefFunc) _dbus_pending_call_ref_unlocked,
+ NULL,
+ (VoidFunc) _dbus_pending_call_unref_and_unlock,
+ f->connection,
+ (VoidFunc) _dbus_connection_lock,
+ NULL };
+ int i;
+ DBusPendingCall *pending_call;
+
+ _dbus_connection_lock (f->connection);
+ pending_call = _dbus_pending_call_new_unlocked (f->connection,
+ DBUS_TIMEOUT_INFINITE, NULL);
+ g_assert (pending_call != NULL);
+ _dbus_connection_unlock (f->connection);
+
+ public_api.thing = pending_call;
+ internal_api.thing = pending_call;
+ unref_and_unlock_api.thing = pending_call;
+
+ if (!dbus_pending_call_set_data (pending_call, pending_call_slot, f,
+ last_unref))
+ g_error ("OOM");
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ if ((i % 2) == 0)
+ f->threads[i] = g_thread_create (ref_thread, &public_api, TRUE, NULL);
+ else
+ f->threads[i] = g_thread_create (ref_thread, &internal_api, TRUE,
+ NULL);
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ switch (i % 3)
+ {
+ case 0:
+ f->threads[i] = g_thread_create (cycle_thread, &public_api, TRUE,
+ NULL);
+ break;
+ case 1:
+ f->threads[i] = g_thread_create (cycle_thread, &internal_api, TRUE,
+ NULL);
+ break;
+ default:
+ f->threads[i] = g_thread_create (cycle_thread,
+ &unref_and_unlock_api, TRUE, NULL);
+ }
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ for (i = 0; i < N_THREADS; i++)
+ {
+ switch (i % 3)
+ {
+ case 0:
+ f->threads[i] = g_thread_create (unref_thread, &public_api, TRUE,
+ NULL);
+ break;
+ case 1:
+ f->threads[i] = g_thread_create (unref_thread, &internal_api, TRUE,
+ NULL);
+ break;
+ default:
+ f->threads[i] = g_thread_create (unref_thread,
+ &unref_and_unlock_api, TRUE, NULL);
+ }
+
+ g_assert (f->threads[i] != NULL);
+ }
+
+ wait_for_all_threads (f);
+
+ /* Destroy the pending call. This should be the last-unref. */
+ g_assert (!f->last_unref);
+ dbus_pending_call_unref (pending_call);
+ g_assert (f->last_unref);
+}
+
+static void
+teardown (Fixture *f,
+ gconstpointer data)
+{
+ if (f->server_connection != NULL)
+ {
+ dbus_connection_close (f->server_connection);
+ dbus_connection_unref (f->server_connection);
+ }
+
+ if (f->connection != NULL)
+ {
+ dbus_connection_close (f->connection);
+ dbus_connection_unref (f->connection);
+ }
+
+ if (f->server != NULL)
+ {
+ dbus_server_disconnect (f->server);
+ dbus_server_unref (f->server);
+ }
+
+ dbus_connection_free_data_slot (&connection_slot);
+ dbus_server_free_data_slot (&server_slot);
+ dbus_message_free_data_slot (&message_slot);
+ dbus_pending_call_free_data_slot (&pending_call_slot);
+
+ _dbus_loop_unref (f->loop);
+ dbus_error_free (&f->e);
+}
+
+int
+main (int argc,
+ char **argv)
+{
+ g_thread_init (NULL);
+ g_test_init (&argc, &argv, NULL);
+ g_test_bug_base ("https://bugs.freedesktop.org/show_bug.cgi?id=");
+
+ g_test_add ("/refs/connection", Fixture, NULL, setup_connection,
+ test_connection, teardown);
+ g_test_add ("/refs/message", Fixture, NULL, setup,
+ test_message, teardown);
+ g_test_add ("/refs/pending-call", Fixture, NULL, setup_connection,
+ test_pending_call, teardown);
+ g_test_add ("/refs/server", Fixture, NULL, setup,
+ test_server, teardown);
+
+ return g_test_run ();
+}
projects / platform / upstream / dbus.git / commitdiff