[glib] gobject/tests: New test for dynamic class creation/destruction

[Alexander Larsson <alexl src gnome org>]

commit 83ee0d947d7c103e975be0fc4e62415ad7d57571
Author: Edward Hervey <bilboed bilboed com>
Date:   Thu Sep 24 13:19:46 2009 +0200

    gobject/tests: New test for dynamic class creation/destruction
    
    Starts 100 threads which ref/unref a dynamic class to test the recent
    changes to class init/uninit.

 gobject/tests/Makefile.am    |    4 +-
 gobject/tests/dynamictests.c |  235 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 238 insertions(+), 1 deletions(-)
---
diff --git a/gobject/tests/Makefile.am b/gobject/tests/Makefile.am
index ed63a82..33b3e0b 100644
--- a/gobject/tests/Makefile.am
+++ b/gobject/tests/Makefile.am
@@ -5,6 +5,8 @@ INCLUDES = -g -I$(top_srcdir) -I$(top_srcdir)/glib $(GLIB_DEBUG_FLAGS)
 noinst_PROGRAMS  = $(TEST_PROGS)
 libgobject_LDADD = ../libgobject-2.0.la $(top_builddir)/gthread/libgthread-2.0.la $(top_builddir)/glib/libglib-2.0.la
 
-TEST_PROGS             += threadtests
+TEST_PROGS             += threadtests dynamictests
 threadtests_SOURCES	= threadtests.c
 threadtests_LDADD	= $(libgobject_LDADD)
+dynamictests_SOURCES	= dynamictests.c
+dynamictests_LDADD	= $(libgobject_LDADD)
diff --git a/gobject/tests/dynamictests.c b/gobject/tests/dynamictests.c
new file mode 100644
index 0000000..1f2a5b7
--- /dev/null
+++ b/gobject/tests/dynamictests.c
@@ -0,0 +1,235 @@
+/* GLib testing framework examples and tests
+ * Copyright (C) 2008 Imendio AB
+ * Authors: Tim Janik
+ *
+ * This work is provided "as is"; redistribution and modification
+ * in whole or in part, in any medium, physical or electronic is
+ * permitted without restriction.
+ *
+ * This work is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * In no event shall the authors or contributors be liable for any
+ * direct, indirect, incidental, special, exemplary, or consequential
+ * damages (including, but not limited to, procurement of substitute
+ * goods or services; loss of use, data, or profits; or business
+ * interruption) however caused and on any theory of liability, whether
+ * in contract, strict liability, or tort (including negligence or
+ * otherwise) arising in any way out of the use of this software, even
+ * if advised of the possibility of such damage.
+ */
+#include <glib.h>
+#include <glib-object.h>
+
+/* This test tests the macros for defining dynamic types.
+ */
+
+static GMutex *sync_mutex = NULL;
+static gboolean loaded = FALSE;
+
+/* MODULE */
+typedef struct _TestModule      TestModule;
+typedef struct _TestModuleClass TestModuleClass;
+
+#define TEST_TYPE_MODULE              (test_module_get_type ())
+#define TEST_MODULE(module)           (G_TYPE_CHECK_INSTANCE_CAST ((module), TEST_TYPE_MODULE, TestModule))
+#define TEST_MODULE_CLASS(class)      (G_TYPE_CHECK_CLASS_CAST ((class), TEST_TYPE_MODULE, TestModuleClass))
+#define TEST_IS_MODULE(module)        (G_TYPE_CHECK_INSTANCE_TYPE ((module), TEST_TYPE_MODULE))
+#define TEST_IS_MODULE_CLASS(class)   (G_TYPE_CHECK_CLASS_TYPE ((class), TEST_TYPE_MODULE))
+#define TEST_MODULE_GET_CLASS(module) (G_TYPE_INSTANCE_GET_CLASS ((module), TEST_TYPE_MODULE, TestModuleClass))
+typedef void (*TestModuleRegisterFunc) (GTypeModule *module);
+
+struct _TestModule
+{
+  GTypeModule parent_instance;
+
+  TestModuleRegisterFunc register_func;
+};
+
+struct _TestModuleClass
+{
+  GTypeModuleClass parent_class;
+};
+
+static GType test_module_get_type (void);
+
+static gboolean
+test_module_load (GTypeModule *module)
+{
+  TestModule *test_module = TEST_MODULE (module);
+
+  test_module->register_func (module);
+
+  return TRUE;
+}
+
+static void
+test_module_unload (GTypeModule *module)
+{
+}
+
+static void
+test_module_class_init (TestModuleClass *class)
+{
+  GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (class);
+
+  module_class->load = test_module_load;
+  module_class->unload = test_module_unload;
+}
+
+static GType test_module_get_type (void)
+{
+  static GType object_type = 0;
+
+  if (!object_type) {
+    static const GTypeInfo object_info =
+      {
+	sizeof (TestModuleClass),
+	(GBaseInitFunc) NULL,
+	(GBaseFinalizeFunc) NULL,
+	(GClassInitFunc) test_module_class_init,
+	(GClassFinalizeFunc) NULL,
+	NULL,
+	sizeof (TestModule),
+	0,
+	(GInstanceInitFunc)NULL
+      };
+    object_type = g_type_register_static (G_TYPE_TYPE_MODULE, "TestModule", &object_info, 0);
+  }
+  return object_type;
+}
+
+
+GTypeModule *
+test_module_new (TestModuleRegisterFunc register_func)
+{
+  TestModule *test_module = g_object_new (TEST_TYPE_MODULE, NULL);
+  GTypeModule *module = G_TYPE_MODULE (test_module);
+
+  test_module->register_func = register_func;
+
+  /* Register the types initially */
+  g_type_module_use (module);
+  g_type_module_unuse (module);
+
+  return G_TYPE_MODULE (module);
+}
+
+
+
+#define DYNAMIC_OBJECT_TYPE (dynamic_object_get_type ())
+
+typedef GObject DynamicObject;
+typedef struct _DynamicObjectClass DynamicObjectClass;
+
+struct _DynamicObjectClass
+{
+  GObjectClass parent_class;
+  guint val;
+};
+
+G_DEFINE_DYNAMIC_TYPE(DynamicObject, dynamic_object, G_TYPE_OBJECT);
+
+static void
+dynamic_object_class_init (DynamicObjectClass *class)
+{
+  class->val = 42;
+  g_assert (loaded == FALSE);
+  loaded = TRUE;
+}
+
+static void
+dynamic_object_class_finalize (DynamicObjectClass *class)
+{
+  g_assert (loaded == TRUE);
+  loaded = FALSE;
+}
+
+static void
+dynamic_object_init (DynamicObject *dynamic_object)
+{
+}
+
+
+static void
+module_register (GTypeModule *module)
+{
+  dynamic_object_register_type (module);
+}
+
+#define N_THREADS 100
+#define N_REFS 10000
+
+static gpointer
+ref_unref_thread (gpointer data)
+{
+  gint i;
+  /* first, syncronize with other threads,
+   */
+  if (g_test_verbose())
+    g_print ("WAITING!\n");
+  g_mutex_lock (sync_mutex);
+  g_mutex_unlock (sync_mutex);
+  if (g_test_verbose ())
+    g_print ("STARTING\n");
+
+  /* ref/unref the klass 10000000 times */
+  for (i = N_REFS; i; i--) {
+    if (g_test_verbose ())
+      if (i % 10)
+	g_print ("%d\n", i);
+    g_type_class_unref (g_type_class_ref ((GType) data));
+  }
+
+  if (g_test_verbose())
+    g_print ("DONE !\n");
+
+  return NULL;
+}
+
+static void
+test_multithreaded_dynamic_type_init (void)
+{
+  GTypeModule *module;
+  DynamicObjectClass *class;
+  /* Create N_THREADS threads that are going to just ref/unref a class */
+  GThread *threads[N_THREADS];
+  guint i;
+
+  module = test_module_new (module_register);
+  /* Not loaded until we call ref for the first time */
+  class = g_type_class_peek (DYNAMIC_OBJECT_TYPE);
+  g_assert (class == NULL);
+  g_assert (!loaded);
+
+  /* pause newly created threads */
+  g_mutex_lock (sync_mutex);
+
+  /* create threads */
+  for (i = 0; i < N_THREADS; i++) {
+    threads[i] = g_thread_create (ref_unref_thread, (gpointer) DYNAMIC_OBJECT_TYPE, TRUE, NULL);
+  }
+
+  /* execute threads */
+  g_mutex_unlock (sync_mutex);
+
+  for (i = 0; i < N_THREADS; i++) {
+    g_thread_join (threads[i]);
+  }
+}
+
+int
+main (int   argc,
+      char *argv[])
+{
+  g_thread_init (NULL);
+  g_test_init (&argc, &argv, NULL);
+  g_type_init ();
+
+  sync_mutex = g_mutex_new();
+
+  g_test_add_func ("/GObject/threaded-dynamic-ref-unref-init", test_multithreaded_dynamic_type_init);
+
+  return g_test_run();
+}