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#include <glib.h>
#include <glib-object.h>
#ifdef G_OS_UNIX
#include <unistd.h>
#endif
#define G_TYPE_TEST (my_test_get_type ())
#define MY_TEST(test) (G_TYPE_CHECK_INSTANCE_CAST ((test), G_TYPE_TEST, GTest))
#define MY_IS_TEST(test) (G_TYPE_CHECK_INSTANCE_TYPE ((test), G_TYPE_TEST))
#define MY_TEST_CLASS(tclass) (G_TYPE_CHECK_CLASS_CAST ((tclass), G_TYPE_TEST, GTestClass))
#define MY_IS_TEST_CLASS(tclass) (G_TYPE_CHECK_CLASS_TYPE ((tclass), G_TYPE_TEST))
#define MY_TEST_GET_CLASS(test) (G_TYPE_INSTANCE_GET_CLASS ((test), G_TYPE_TEST, GTestClass))
typedef struct _GTest GTest;
typedef struct _GTestClass GTestClass;
#if G_GNUC_CHECK_VERSION (4, 0)
/* Increase the alignment of GTest to check whether
* G_TYPE_CHECK_INSTANCE_CAST() would trigger a "-Wcast-align=strict" warning.
* That would happen, when trying to cast a "GObject*" to "GTest*", if latter
* has larger alignment.
*
* Note that merely adding a int64 field to GTest does not increase the
* alignment above 4 bytes on i386, hence use the __attribute__((__aligned__())).
*/
#define _GTest_increase_alignment __attribute__((__aligned__(__alignof(gint64))))
#else
#define _GTest_increase_alignment
#endif
struct _GTest
{
GObject object;
/* See _GTest_increase_alignment. */
long double increase_alignment2;
} _GTest_increase_alignment;
struct _GTestClass
{
GObjectClass parent_class;
};
static GType my_test_get_type (void);
static gint stopping; /* (atomic) */
static void my_test_class_init (GTestClass * klass);
static void my_test_init (GTest * test);
static void my_test_dispose (GObject * object);
static GObjectClass *parent_class = NULL;
static GType
my_test_get_type (void)
{
static GType test_type = 0;
if (!test_type) {
const GTypeInfo test_info = {
sizeof (GTestClass),
NULL,
NULL,
(GClassInitFunc) my_test_class_init,
NULL,
NULL,
sizeof (GTest),
0,
(GInstanceInitFunc) my_test_init,
NULL
};
test_type = g_type_register_static (G_TYPE_OBJECT, "GTest",
&test_info, 0);
}
return test_type;
}
static void
my_test_class_init (GTestClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_ref (G_TYPE_OBJECT);
gobject_class->dispose = my_test_dispose;
}
static void
my_test_init (GTest * test)
{
g_test_message ("init %p\n", test);
}
static void
my_test_dispose (GObject * object)
{
GTest *test;
test = MY_TEST (object);
g_test_message ("dispose %p!\n", test);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
my_test_do_refcount (GTest * test)
{
g_object_ref (test);
g_object_unref (test);
}
static gpointer
run_thread (GTest * test)
{
gint i = 1;
while (!g_atomic_int_get (&stopping)) {
my_test_do_refcount (test);
if ((i++ % 10000) == 0) {
g_thread_yield (); /* force context switch */
}
}
return NULL;
}
static void
test_refcount_object_basics (void)
{
guint i;
GTest *test1, *test2;
GArray *test_threads;
const guint n_threads = 5;
test1 = g_object_new (G_TYPE_TEST, NULL);
test2 = g_object_new (G_TYPE_TEST, NULL);
test_threads = g_array_new (FALSE, FALSE, sizeof (GThread *));
g_atomic_int_set (&stopping, 0);
for (i = 0; i < n_threads; i++) {
GThread *thread;
thread = g_thread_new (NULL, (GThreadFunc) run_thread, test1);
g_array_append_val (test_threads, thread);
thread = g_thread_new (NULL, (GThreadFunc) run_thread, test2);
g_array_append_val (test_threads, thread);
}
g_usleep (5000000);
g_atomic_int_set (&stopping, 1);
/* join all threads */
for (i = 0; i < 2 * n_threads; i++) {
GThread *thread;
thread = g_array_index (test_threads, GThread *, i);
g_thread_join (thread);
}
g_object_unref (test1);
g_object_unref (test2);
g_array_unref (test_threads);
}
int
main (int argc, gchar *argv[])
{
g_log_set_always_fatal (G_LOG_LEVEL_WARNING |
G_LOG_LEVEL_CRITICAL |
g_log_set_always_fatal (G_LOG_FATAL_MASK));
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/gobject/refcount/object-basics", test_refcount_object_basics);
return g_test_run ();
}
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