/* 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>
#define G_DEFINE_INTERFACE(TN, t_n, T_P) G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, ;)
#define G_DEFINE_INTERFACE_WITH_CODE(TN, t_n, T_P, _C_) _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TN, t_n, T_P) {_C_;} _G_DEFINE_INTERFACE_EXTENDED_END()
/* _default_init, ##Interface, if(TYPE_PREREQ); */
#define _G_DEFINE_INTERFACE_EXTENDED_BEGIN(TypeName, type_name, TYPE_PREREQ) \
static void type_name##_default_init (TypeName##Interface *klass); \
GType \
type_name##_get_type (void) \
{ \
static volatile gsize g_define_type_id__volatile = 0; \
if (g_once_init_enter (&g_define_type_id__volatile)) \
{ \
GType g_define_type_id = \
g_type_register_static_simple (G_TYPE_INTERFACE, \
g_intern_static_string (#TypeName), \
sizeof (TypeName##Interface), \
(GClassInitFunc) type_name##_default_init, \
0, \
(GInstanceInitFunc) NULL, \
(GTypeFlags) 0); \
if (TYPE_PREREQ) \
g_type_interface_add_prerequisite (g_define_type_id, TYPE_PREREQ); \
{ /* custom code follows */
#define _G_DEFINE_INTERFACE_EXTENDED_END() \
/* following custom code */ \
} \
g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); \
} \
return g_define_type_id__volatile; \
} /* closes type_name##_get_type() */
static volatile int mtsafe_call_counter = 0; /* multi thread safe call counter */
static int unsafe_call_counter = 0; /* single-threaded call counter */
#define NUM_COUNTER_INCREMENTS 100000
static void
call_counter_init (gpointer tclass)
{
int i;
for (i = 0; i < NUM_COUNTER_INCREMENTS; i++)
{
int saved_unsafe_call_counter = unsafe_call_counter;
g_atomic_int_add (&mtsafe_call_counter, 1); // real call count update
g_thread_yield(); // let concurrent threads corrupt the unsafe_call_counter state
unsafe_call_counter = 1 + saved_unsafe_call_counter; // non-atomic counter update
}
}
static void interface_per_class_init () { call_counter_init (NULL); }
/* define 3 test interfaces */
typedef GTypeInterface MyFace0Interface;
G_DEFINE_INTERFACE (MyFace0, my_face0, G_TYPE_OBJECT);
static void my_face0_default_init (MyFace0Interface *iface) { call_counter_init (iface); }
typedef GTypeInterface MyFace1Interface;
G_DEFINE_INTERFACE (MyFace1, my_face1, G_TYPE_OBJECT);
static void my_face1_default_init (MyFace1Interface *iface) { call_counter_init (iface); }
typedef GTypeInterface MyFace2Interface;
G_DEFINE_INTERFACE (MyFace2, my_face2, G_TYPE_OBJECT);
static void my_face2_default_init (MyFace2Interface *iface) { call_counter_init (iface); }
/* define 3 test objects, adding interfaces 0 & 1, and adding interface 2 after class initialization */
typedef GObject MyTester0;
typedef GObjectClass MyTester0Class;
G_DEFINE_TYPE_WITH_CODE (MyTester0, my_tester0, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);
G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);
);
static void my_tester0_init (MyTester0*t) {}
static void my_tester0_class_init (MyTester0Class*c) { call_counter_init (c); }
typedef GObject MyTester1;
typedef GObjectClass MyTester1Class;
G_DEFINE_TYPE_WITH_CODE (MyTester1, my_tester1, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);
G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);
);
static void my_tester1_init (MyTester1*t) {}
static void my_tester1_class_init (MyTester1Class*c) { call_counter_init (c); }
typedef GObject MyTester2;
typedef GObjectClass MyTester2Class;
G_DEFINE_TYPE_WITH_CODE (MyTester2, my_tester2, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (my_face0_get_type(), interface_per_class_init);
G_IMPLEMENT_INTERFACE (my_face1_get_type(), interface_per_class_init);
);
static void my_tester2_init (MyTester2*t) {}
static void my_tester2_class_init (MyTester2Class*c) { call_counter_init (c); }
static GCond *sync_cond = NULL;
static GMutex *sync_mutex = NULL;
static gpointer
tester_init_thread (gpointer data)
{
const GInterfaceInfo face2_interface_info = { (GInterfaceInitFunc) interface_per_class_init, NULL, NULL };
gpointer klass;
/* first, syncronize with other threads,
* then run interface and class initializers,
* using unsafe_call_counter concurrently
*/
g_mutex_lock (sync_mutex);
g_mutex_unlock (sync_mutex);
/* test default interface initialization for face0 */
g_type_default_interface_unref (g_type_default_interface_ref (my_face0_get_type()));
/* test class initialization, face0 per-class initializer, face1 default and per-class initializer */
klass = g_type_class_ref ((GType) data);
/* test face2 default and per-class initializer, after class_init */
g_type_add_interface_static (G_TYPE_FROM_CLASS (klass), my_face2_get_type(), &face2_interface_info);
/* cleanups */
g_type_class_unref (klass);
return NULL;
}
static void
test_threaded_class_init (void)
{
GThread *threads[3] = { NULL, };
/* pause newly created threads */
g_mutex_lock (sync_mutex);
/* create threads */
threads[0] = g_thread_create (tester_init_thread, (gpointer) my_tester0_get_type(), TRUE, NULL);
threads[1] = g_thread_create (tester_init_thread, (gpointer) my_tester1_get_type(), TRUE, NULL);
threads[2] = g_thread_create (tester_init_thread, (gpointer) my_tester2_get_type(), TRUE, NULL);
/* execute threads */
g_mutex_unlock (sync_mutex);
while (g_atomic_int_get (&mtsafe_call_counter) < (3 + 3 + 3 * 3) * NUM_COUNTER_INCREMENTS)
{
if (g_test_verbose())
g_print ("Initializers counted: %u\n", g_atomic_int_get (&mtsafe_call_counter));
g_usleep (50 * 1000); /* wait for threads to complete */
}
if (g_test_verbose())
g_print ("Total initializers: %u\n", g_atomic_int_get (&mtsafe_call_counter));
/* ensure non-corrupted counter updates */
g_assert_cmpint (g_atomic_int_get (&mtsafe_call_counter), ==, unsafe_call_counter);
}
typedef struct {
GObject parent;
char *name;
} PropTester;
typedef GObjectClass PropTesterClass;
G_DEFINE_TYPE (PropTester, prop_tester, G_TYPE_OBJECT);
#define PROP_NAME 1
static void
prop_tester_init (PropTester* t)
{
if (t->name == NULL)
; // neds unit test framework initialization: g_test_bug ("race initializing properties");
}
static void
prop_tester_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{}
static void
prop_tester_class_init (PropTesterClass *c)
{
int i;
GParamSpec *param;
GObjectClass *gobject_class = G_OBJECT_CLASS (c);
gobject_class->set_property = prop_tester_set_property; /* silence GObject checks */
g_mutex_lock (sync_mutex);
g_cond_signal (sync_cond);
g_mutex_unlock (sync_mutex);
for (i = 0; i < 100; i++) /* wait a bit. */
g_thread_yield();
call_counter_init (c);
param = g_param_spec_string ("name", "name_i18n",
"yet-more-wasteful-i18n",
NULL,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE |
G_PARAM_STATIC_NAME | G_PARAM_STATIC_BLURB |
G_PARAM_STATIC_NICK);
g_object_class_install_property (gobject_class, PROP_NAME, param);
}
static gpointer
object_create (gpointer data)
{
GObject *obj = g_object_new (prop_tester_get_type(), "name", "fish", NULL);
g_object_unref (obj);
return NULL;
}
static void
test_threaded_object_init (void)
{
GThread *creator;
g_mutex_lock (sync_mutex);
creator = g_thread_create (object_create, NULL, TRUE, NULL);
/* really provoke the race */
g_cond_wait (sync_cond, sync_mutex);
object_create (NULL);
g_mutex_unlock (sync_mutex);
g_thread_join (creator);
}
int
main (int argc,
char *argv[])
{
g_thread_init (NULL);
g_test_init (&argc, &argv, NULL);
g_type_init ();
sync_cond = g_cond_new();
sync_mutex = g_mutex_new();
g_test_add_func ("/GObject/threaded-class-init", test_threaded_class_init);
g_test_add_func ("/GObject/threaded-object-init", test_threaded_object_init);
return g_test_run();
}