mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-12-26 23:46:15 +01:00
51acb01f73
When calling `g_set_object()` for a type derived from `GObject`, GCC 9.2
was giving the following strict aliasing warning:
```
../../source/malcontent/libmalcontent-ui/user-controls.c:1001:21: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
1001 | if (g_set_object (&self->user, user))
/opt/gnome/install/include/glib-2.0/gobject/gobject.h:744:33: note: in definition of macro ‘g_set_object’
744 | (g_set_object) ((GObject **) (object_ptr), (GObject *) (new_object)) \
| ^~~~~~~~~~
```
This was due to the `(GObject **)` cast.
Pass the pointer through a union to squash this warning. We already do
some size and type checks of the dereferenced type, which should catch
casual errors. The `g_object_ref()` and `g_object_unref()` calls which
subsequently happen inside the `g_set_object()` function also do some
dynamic type checks.
Add a test.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
821 lines
20 KiB
C
821 lines
20 KiB
C
#include <glib-object.h>
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static void
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test_fundamentals (void)
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{
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_NONE));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_INTERFACE));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_CHAR));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_UCHAR));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_BOOLEAN));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_INT));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_UINT));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_LONG));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_ULONG));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_INT64));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_UINT64));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_ENUM));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_FLAGS));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_FLOAT));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_DOUBLE));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_STRING));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_POINTER));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_BOXED));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_PARAM));
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_OBJECT));
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g_assert (G_TYPE_OBJECT == g_object_get_type ());
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g_assert (G_TYPE_IS_FUNDAMENTAL (G_TYPE_VARIANT));
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g_assert (G_TYPE_IS_DERIVED (G_TYPE_INITIALLY_UNOWNED));
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g_assert (g_type_fundamental_next () == G_TYPE_MAKE_FUNDAMENTAL (G_TYPE_RESERVED_USER_FIRST));
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}
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static void
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test_type_qdata (void)
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{
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gchar *data;
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g_type_set_qdata (G_TYPE_ENUM, g_quark_from_string ("bla"), "bla");
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data = g_type_get_qdata (G_TYPE_ENUM, g_quark_from_string ("bla"));
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g_assert_cmpstr (data, ==, "bla");
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}
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static void
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test_type_query (void)
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{
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GTypeQuery query;
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g_type_query (G_TYPE_ENUM, &query);
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g_assert_cmpint (query.type, ==, G_TYPE_ENUM);
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g_assert_cmpstr (query.type_name, ==, "GEnum");
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g_assert_cmpint (query.class_size, ==, sizeof (GEnumClass));
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g_assert_cmpint (query.instance_size, ==, 0);
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}
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typedef struct _MyObject MyObject;
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typedef struct _MyObjectClass MyObjectClass;
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typedef struct _MyObjectClassPrivate MyObjectClassPrivate;
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struct _MyObject
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{
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GObject parent_instance;
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gint count;
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};
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struct _MyObjectClass
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{
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GObjectClass parent_class;
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};
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struct _MyObjectClassPrivate
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{
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gint secret_class_count;
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};
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static GType my_object_get_type (void);
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G_DEFINE_TYPE_WITH_CODE (MyObject, my_object, G_TYPE_OBJECT,
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g_type_add_class_private (g_define_type_id, sizeof (MyObjectClassPrivate)) );
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static void
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my_object_init (MyObject *obj)
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{
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obj->count = 42;
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}
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static void
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my_object_class_init (MyObjectClass *klass)
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{
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}
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static void
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test_class_private (void)
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{
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GObject *obj;
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MyObjectClass *class;
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MyObjectClassPrivate *priv;
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obj = g_object_new (my_object_get_type (), NULL);
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class = g_type_class_ref (my_object_get_type ());
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priv = G_TYPE_CLASS_GET_PRIVATE (class, my_object_get_type (), MyObjectClassPrivate);
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priv->secret_class_count = 13;
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g_type_class_unref (class);
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g_object_unref (obj);
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g_assert_cmpint (g_type_qname (my_object_get_type ()), ==, g_quark_from_string ("MyObject"));
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}
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static void
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test_clear (void)
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{
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GObject *o = NULL;
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GObject *tmp;
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g_clear_object (&o);
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g_assert (o == NULL);
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tmp = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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o = g_object_ref (tmp);
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g_assert (o != NULL);
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g_assert_cmpint (tmp->ref_count, ==, 2);
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g_clear_object (&o);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert (o == NULL);
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g_object_unref (tmp);
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}
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static void
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test_clear_function (void)
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{
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GObject *o = NULL;
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GObject *tmp;
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(g_clear_object) (&o);
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g_assert (o == NULL);
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tmp = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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o = g_object_ref (tmp);
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g_assert (o != NULL);
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g_assert_cmpint (tmp->ref_count, ==, 2);
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(g_clear_object) (&o);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert (o == NULL);
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g_object_unref (tmp);
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}
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static void
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test_set (void)
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{
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GObject *o = NULL;
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GObject *tmp;
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gpointer tmp_weak = NULL;
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g_assert (!g_set_object (&o, NULL));
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g_assert (o == NULL);
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tmp = g_object_new (G_TYPE_OBJECT, NULL);
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tmp_weak = tmp;
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g_object_add_weak_pointer (tmp, &tmp_weak);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert (g_set_object (&o, tmp));
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g_assert (o == tmp);
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g_assert_cmpint (tmp->ref_count, ==, 2);
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g_object_unref (tmp);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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/* Setting it again shouldn’t cause finalisation. */
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g_assert (!g_set_object (&o, tmp));
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g_assert (o == tmp);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert_nonnull (tmp_weak);
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g_assert (g_set_object (&o, NULL));
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g_assert (o == NULL);
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g_assert_null (tmp_weak);
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}
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static void
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test_set_function (void)
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{
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GObject *o = NULL;
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GObject *tmp;
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gpointer tmp_weak = NULL;
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g_assert (!(g_set_object) (&o, NULL));
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g_assert (o == NULL);
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tmp = g_object_new (G_TYPE_OBJECT, NULL);
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tmp_weak = tmp;
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g_object_add_weak_pointer (tmp, &tmp_weak);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert ((g_set_object) (&o, tmp));
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g_assert (o == tmp);
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g_assert_cmpint (tmp->ref_count, ==, 2);
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g_object_unref (tmp);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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/* Setting it again shouldn’t cause finalisation. */
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g_assert (!(g_set_object) (&o, tmp));
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g_assert (o == tmp);
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g_assert_cmpint (tmp->ref_count, ==, 1);
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g_assert_nonnull (tmp_weak);
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g_assert ((g_set_object) (&o, NULL));
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g_assert (o == NULL);
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g_assert_null (tmp_weak);
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}
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static void
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test_set_derived_type (void)
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{
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GBinding *obj = NULL;
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GObject *o = NULL;
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GBinding *b = NULL;
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g_test_summary ("Check that g_set_object() doesn’t give strict aliasing "
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"warnings when used on types derived from GObject");
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g_assert_false (g_set_object (&o, NULL));
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g_assert_null (o);
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g_assert_false (g_set_object (&b, NULL));
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g_assert_null (b);
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obj = g_object_new (my_object_get_type (), NULL);
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g_assert_true (g_set_object (&o, G_OBJECT (obj)));
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g_assert_true (o == G_OBJECT (obj));
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g_assert_true (g_set_object (&b, obj));
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g_assert_true (b == obj);
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g_object_unref (obj);
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g_clear_object (&b);
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g_clear_object (&o);
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}
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static void
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toggle_cb (gpointer data, GObject *obj, gboolean is_last)
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{
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gboolean *b = data;
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*b = TRUE;
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}
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static void
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test_object_value (void)
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{
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GObject *v;
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GObject *v2;
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GValue value = G_VALUE_INIT;
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gboolean toggled = FALSE;
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g_value_init (&value, G_TYPE_OBJECT);
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v = g_object_new (G_TYPE_OBJECT, NULL);
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g_object_add_toggle_ref (v, toggle_cb, &toggled);
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g_value_take_object (&value, v);
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v2 = g_value_get_object (&value);
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g_assert (v2 == v);
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v2 = g_value_dup_object (&value);
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g_assert (v2 == v); /* objects use ref/unref for copy/free */
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g_object_unref (v2);
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g_assert (!toggled);
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g_value_unset (&value);
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g_assert (toggled);
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/* test the deprecated variant too */
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g_value_init (&value, G_TYPE_OBJECT);
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/* get a new reference */
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g_object_ref (v);
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G_GNUC_BEGIN_IGNORE_DEPRECATIONS
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g_value_set_object_take_ownership (&value, v);
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G_GNUC_END_IGNORE_DEPRECATIONS
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toggled = FALSE;
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g_value_unset (&value);
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g_assert (toggled);
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g_object_remove_toggle_ref (v, toggle_cb, &toggled);
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}
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static void
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test_initially_unowned (void)
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{
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GObject *obj;
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obj = g_object_new (G_TYPE_INITIALLY_UNOWNED, NULL);
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g_assert (g_object_is_floating (obj));
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_ref_sink (obj);
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g_assert (!g_object_is_floating (obj));
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_ref_sink (obj);
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g_assert (!g_object_is_floating (obj));
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g_assert_cmpint (obj->ref_count, ==, 2);
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g_object_unref (obj);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_force_floating (obj);
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g_assert (g_object_is_floating (obj));
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_ref_sink (obj);
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g_object_unref (obj);
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}
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static void
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test_weak_pointer (void)
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{
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GObject *obj;
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gpointer weak;
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gpointer weak2;
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weak = weak2 = obj = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_add_weak_pointer (obj, &weak);
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g_object_add_weak_pointer (obj, &weak2);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert (weak == obj);
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g_assert (weak2 == obj);
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g_object_remove_weak_pointer (obj, &weak2);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert (weak == obj);
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g_assert (weak2 == obj);
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g_object_unref (obj);
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g_assert (weak == NULL);
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g_assert (weak2 == obj);
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}
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static void
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test_weak_pointer_clear (void)
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{
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GObject *obj;
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gpointer weak = NULL;
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g_clear_weak_pointer (&weak);
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g_assert_null (weak);
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weak = obj = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_add_weak_pointer (obj, &weak);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_true (weak == obj);
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g_clear_weak_pointer (&weak);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_null (weak);
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g_object_unref (obj);
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}
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|
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static void
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test_weak_pointer_clear_function (void)
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{
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GObject *obj;
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gpointer weak = NULL;
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(g_clear_weak_pointer) (&weak);
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g_assert_null (weak);
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weak = obj = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_object_add_weak_pointer (obj, &weak);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_true (weak == obj);
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(g_clear_weak_pointer) (&weak);
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_null (weak);
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|
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g_object_unref (obj);
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}
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|
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static void
|
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test_weak_pointer_set (void)
|
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{
|
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GObject *obj;
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gpointer weak = NULL;
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g_assert_false (g_set_weak_pointer (&weak, NULL));
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g_assert_null (weak);
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obj = g_object_new (G_TYPE_OBJECT, NULL);
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g_assert_cmpint (obj->ref_count, ==, 1);
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|
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g_assert_true (g_set_weak_pointer (&weak, obj));
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_true (weak == obj);
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|
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g_assert_true (g_set_weak_pointer (&weak, NULL));
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g_assert_cmpint (obj->ref_count, ==, 1);
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g_assert_null (weak);
|
||
|
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g_assert_true (g_set_weak_pointer (&weak, obj));
|
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g_assert_cmpint (obj->ref_count, ==, 1);
|
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g_assert_true (weak == obj);
|
||
|
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g_object_unref (obj);
|
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g_assert_null (weak);
|
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}
|
||
|
||
static void
|
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test_weak_pointer_set_function (void)
|
||
{
|
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GObject *obj;
|
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gpointer weak = NULL;
|
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|
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g_assert_false ((g_set_weak_pointer) (&weak, NULL));
|
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g_assert_null (weak);
|
||
|
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obj = g_object_new (G_TYPE_OBJECT, NULL);
|
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g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
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g_assert_true ((g_set_weak_pointer) (&weak, obj));
|
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g_assert_cmpint (obj->ref_count, ==, 1);
|
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g_assert_true (weak == obj);
|
||
|
||
g_assert_true ((g_set_weak_pointer) (&weak, NULL));
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
g_assert_null (weak);
|
||
|
||
g_assert_true ((g_set_weak_pointer) (&weak, obj));
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
g_assert_true (weak == obj);
|
||
|
||
g_object_unref (obj);
|
||
g_assert_null (weak);
|
||
}
|
||
|
||
/* See gobject/tests/threadtests.c for the threaded version */
|
||
static void
|
||
test_weak_ref (void)
|
||
{
|
||
GObject *obj;
|
||
GObject *obj2;
|
||
GObject *tmp;
|
||
GWeakRef weak = { { GUINT_TO_POINTER (0xDEADBEEFU) } };
|
||
GWeakRef weak2 = { { GUINT_TO_POINTER (0xDEADBEEFU) } };
|
||
GWeakRef weak3 = { { GUINT_TO_POINTER (0xDEADBEEFU) } };
|
||
GWeakRef *dynamic_weak = g_new (GWeakRef, 1);
|
||
|
||
/* you can initialize to empty like this... */
|
||
g_weak_ref_init (&weak2, NULL);
|
||
g_assert (g_weak_ref_get (&weak2) == NULL);
|
||
|
||
/* ... or via an initializer */
|
||
g_weak_ref_init (&weak3, NULL);
|
||
g_assert (g_weak_ref_get (&weak3) == NULL);
|
||
|
||
obj = g_object_new (G_TYPE_OBJECT, NULL);
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
obj2 = g_object_new (G_TYPE_OBJECT, NULL);
|
||
g_assert_cmpint (obj2->ref_count, ==, 1);
|
||
|
||
/* you can init with an object (even if uninitialized) */
|
||
g_weak_ref_init (&weak, obj);
|
||
g_weak_ref_init (dynamic_weak, obj);
|
||
/* or set to point at an object, if initialized (maybe to 0) */
|
||
g_weak_ref_set (&weak2, obj);
|
||
g_weak_ref_set (&weak3, obj);
|
||
/* none of this affects its refcount */
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
/* getting the value takes a ref */
|
||
tmp = g_weak_ref_get (&weak);
|
||
g_assert (tmp == obj);
|
||
g_assert_cmpint (obj->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
tmp = g_weak_ref_get (&weak2);
|
||
g_assert (tmp == obj);
|
||
g_assert_cmpint (obj->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
tmp = g_weak_ref_get (&weak3);
|
||
g_assert (tmp == obj);
|
||
g_assert_cmpint (obj->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
tmp = g_weak_ref_get (dynamic_weak);
|
||
g_assert (tmp == obj);
|
||
g_assert_cmpint (obj->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
/* clearing a weak ref stops tracking */
|
||
g_weak_ref_clear (&weak);
|
||
|
||
/* setting a weak ref to NULL stops tracking too */
|
||
g_weak_ref_set (&weak2, NULL);
|
||
g_assert (g_weak_ref_get (&weak2) == NULL);
|
||
g_weak_ref_clear (&weak2);
|
||
|
||
/* setting a weak ref to a new object stops tracking the old one */
|
||
g_weak_ref_set (dynamic_weak, obj2);
|
||
tmp = g_weak_ref_get (dynamic_weak);
|
||
g_assert (tmp == obj2);
|
||
g_assert_cmpint (obj2->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj2->ref_count, ==, 1);
|
||
|
||
g_assert_cmpint (obj->ref_count, ==, 1);
|
||
|
||
/* free the object: weak3 is the only one left pointing there */
|
||
g_object_unref (obj);
|
||
g_assert (g_weak_ref_get (&weak3) == NULL);
|
||
|
||
/* setting a weak ref to a new object stops tracking the old one */
|
||
g_weak_ref_set (dynamic_weak, obj2);
|
||
tmp = g_weak_ref_get (dynamic_weak);
|
||
g_assert (tmp == obj2);
|
||
g_assert_cmpint (obj2->ref_count, ==, 2);
|
||
g_object_unref (tmp);
|
||
g_assert_cmpint (obj2->ref_count, ==, 1);
|
||
|
||
g_weak_ref_clear (&weak3);
|
||
|
||
/* clear and free dynamic_weak... */
|
||
g_weak_ref_clear (dynamic_weak);
|
||
|
||
/* ... to prove that doing so stops this from being a use-after-free */
|
||
g_object_unref (obj2);
|
||
g_free (dynamic_weak);
|
||
}
|
||
|
||
typedef struct
|
||
{
|
||
gboolean should_be_last;
|
||
gint count;
|
||
} Count;
|
||
|
||
static void
|
||
toggle_notify (gpointer data,
|
||
GObject *obj,
|
||
gboolean is_last)
|
||
{
|
||
Count *c = data;
|
||
|
||
g_assert (is_last == c->should_be_last);
|
||
|
||
c->count++;
|
||
}
|
||
|
||
static void
|
||
test_toggle_ref (void)
|
||
{
|
||
GObject *obj;
|
||
Count c, c2;
|
||
|
||
obj = g_object_new (G_TYPE_OBJECT, NULL);
|
||
|
||
g_object_add_toggle_ref (obj, toggle_notify, &c);
|
||
g_object_add_toggle_ref (obj, toggle_notify, &c2);
|
||
|
||
c.should_be_last = c2.should_be_last = TRUE;
|
||
c.count = c2.count = 0;
|
||
|
||
g_object_unref (obj);
|
||
|
||
g_assert_cmpint (c.count, ==, 0);
|
||
g_assert_cmpint (c2.count, ==, 0);
|
||
|
||
g_object_ref (obj);
|
||
|
||
g_assert_cmpint (c.count, ==, 0);
|
||
g_assert_cmpint (c2.count, ==, 0);
|
||
|
||
g_object_remove_toggle_ref (obj, toggle_notify, &c2);
|
||
|
||
g_object_unref (obj);
|
||
|
||
g_assert_cmpint (c.count, ==, 1);
|
||
|
||
c.should_be_last = FALSE;
|
||
|
||
g_object_ref (obj);
|
||
|
||
g_assert_cmpint (c.count, ==, 2);
|
||
|
||
c.should_be_last = TRUE;
|
||
|
||
g_object_unref (obj);
|
||
|
||
g_assert_cmpint (c.count, ==, 3);
|
||
|
||
g_object_remove_toggle_ref (obj, toggle_notify, &c);
|
||
}
|
||
|
||
static gboolean destroyed;
|
||
static gint value;
|
||
|
||
static void
|
||
data_destroy (gpointer data)
|
||
{
|
||
g_assert_cmpint (GPOINTER_TO_INT (data), ==, value);
|
||
|
||
destroyed = TRUE;
|
||
}
|
||
|
||
static void
|
||
test_object_qdata (void)
|
||
{
|
||
GObject *obj;
|
||
gpointer v;
|
||
GQuark quark;
|
||
|
||
obj = g_object_new (G_TYPE_OBJECT, NULL);
|
||
|
||
value = 1;
|
||
destroyed = FALSE;
|
||
g_object_set_data_full (obj, "test", GINT_TO_POINTER (1), data_destroy);
|
||
v = g_object_get_data (obj, "test");
|
||
g_assert_cmpint (GPOINTER_TO_INT (v), ==, 1);
|
||
g_object_set_data_full (obj, "test", GINT_TO_POINTER (2), data_destroy);
|
||
g_assert (destroyed);
|
||
value = 2;
|
||
destroyed = FALSE;
|
||
v = g_object_steal_data (obj, "test");
|
||
g_assert_cmpint (GPOINTER_TO_INT (v), ==, 2);
|
||
g_assert (!destroyed);
|
||
|
||
value = 1;
|
||
destroyed = FALSE;
|
||
quark = g_quark_from_string ("test");
|
||
g_object_set_qdata_full (obj, quark, GINT_TO_POINTER (1), data_destroy);
|
||
v = g_object_get_qdata (obj, quark);
|
||
g_assert_cmpint (GPOINTER_TO_INT (v), ==, 1);
|
||
g_object_set_qdata_full (obj, quark, GINT_TO_POINTER (2), data_destroy);
|
||
g_assert (destroyed);
|
||
value = 2;
|
||
destroyed = FALSE;
|
||
v = g_object_steal_qdata (obj, quark);
|
||
g_assert_cmpint (GPOINTER_TO_INT (v), ==, 2);
|
||
g_assert (!destroyed);
|
||
|
||
g_object_set_qdata_full (obj, quark, GINT_TO_POINTER (3), data_destroy);
|
||
value = 3;
|
||
destroyed = FALSE;
|
||
g_object_unref (obj);
|
||
|
||
g_assert (destroyed);
|
||
}
|
||
|
||
typedef struct {
|
||
const gchar *value;
|
||
gint refcount;
|
||
} Value;
|
||
|
||
static gpointer
|
||
ref_value (gpointer value, gpointer user_data)
|
||
{
|
||
Value *v = value;
|
||
Value **old_value_p = user_data;
|
||
|
||
if (old_value_p)
|
||
*old_value_p = v;
|
||
|
||
if (v)
|
||
v->refcount += 1;
|
||
|
||
return value;
|
||
}
|
||
|
||
static void
|
||
unref_value (gpointer value)
|
||
{
|
||
Value *v = value;
|
||
|
||
v->refcount -= 1;
|
||
if (v->refcount == 0)
|
||
g_free (value);
|
||
}
|
||
|
||
static
|
||
Value *
|
||
new_value (const gchar *s)
|
||
{
|
||
Value *v;
|
||
|
||
v = g_new (Value, 1);
|
||
v->value = s;
|
||
v->refcount = 1;
|
||
|
||
return v;
|
||
}
|
||
|
||
static void
|
||
test_object_qdata2 (void)
|
||
{
|
||
GObject *obj;
|
||
Value *v, *v1, *v2, *v3, *old_val;
|
||
GDestroyNotify old_destroy;
|
||
gboolean res;
|
||
|
||
obj = g_object_new (G_TYPE_OBJECT, NULL);
|
||
|
||
v1 = new_value ("bla");
|
||
|
||
g_object_set_data_full (obj, "test", v1, unref_value);
|
||
|
||
v = g_object_get_data (obj, "test");
|
||
g_assert_cmpstr (v->value, ==, "bla");
|
||
g_assert_cmpint (v->refcount, ==, 1);
|
||
|
||
v = g_object_dup_data (obj, "test", ref_value, &old_val);
|
||
g_assert (old_val == v1);
|
||
g_assert_cmpstr (v->value, ==, "bla");
|
||
g_assert_cmpint (v->refcount, ==, 2);
|
||
unref_value (v);
|
||
|
||
v = g_object_dup_data (obj, "nono", ref_value, &old_val);
|
||
g_assert (old_val == NULL);
|
||
g_assert (v == NULL);
|
||
|
||
v2 = new_value ("not");
|
||
|
||
res = g_object_replace_data (obj, "test", v1, v2, unref_value, &old_destroy);
|
||
g_assert (res == TRUE);
|
||
g_assert (old_destroy == unref_value);
|
||
g_assert_cmpstr (v1->value, ==, "bla");
|
||
g_assert_cmpint (v1->refcount, ==, 1);
|
||
|
||
v = g_object_get_data (obj, "test");
|
||
g_assert_cmpstr (v->value, ==, "not");
|
||
g_assert_cmpint (v->refcount, ==, 1);
|
||
|
||
v3 = new_value ("xyz");
|
||
res = g_object_replace_data (obj, "test", v1, v3, unref_value, &old_destroy);
|
||
g_assert (res == FALSE);
|
||
g_assert_cmpstr (v2->value, ==, "not");
|
||
g_assert_cmpint (v2->refcount, ==, 1);
|
||
|
||
unref_value (v1);
|
||
|
||
res = g_object_replace_data (obj, "test", NULL, v3, unref_value, &old_destroy);
|
||
g_assert (res == FALSE);
|
||
g_assert_cmpstr (v2->value, ==, "not");
|
||
g_assert_cmpint (v2->refcount, ==, 1);
|
||
|
||
res = g_object_replace_data (obj, "test", v2, NULL, unref_value, &old_destroy);
|
||
g_assert (res == TRUE);
|
||
g_assert (old_destroy == unref_value);
|
||
g_assert_cmpstr (v2->value, ==, "not");
|
||
g_assert_cmpint (v2->refcount, ==, 1);
|
||
|
||
unref_value (v2);
|
||
|
||
v = g_object_get_data (obj, "test");
|
||
g_assert (v == NULL);
|
||
|
||
res = g_object_replace_data (obj, "test", NULL, v3, unref_value, &old_destroy);
|
||
g_assert (res == TRUE);
|
||
|
||
v = g_object_get_data (obj, "test");
|
||
g_assert (v == v3);
|
||
|
||
ref_value (v3, NULL);
|
||
g_assert_cmpint (v3->refcount, ==, 2);
|
||
g_object_unref (obj);
|
||
g_assert_cmpint (v3->refcount, ==, 1);
|
||
unref_value (v3);
|
||
}
|
||
|
||
int
|
||
main (int argc, char **argv)
|
||
{
|
||
g_test_init (&argc, &argv, NULL);
|
||
|
||
g_test_add_func ("/type/fundamentals", test_fundamentals);
|
||
g_test_add_func ("/type/qdata", test_type_qdata);
|
||
g_test_add_func ("/type/query", test_type_query);
|
||
g_test_add_func ("/type/class-private", test_class_private);
|
||
g_test_add_func ("/object/clear", test_clear);
|
||
g_test_add_func ("/object/clear-function", test_clear_function);
|
||
g_test_add_func ("/object/set", test_set);
|
||
g_test_add_func ("/object/set-function", test_set_function);
|
||
g_test_add_func ("/object/set/derived-type", test_set_derived_type);
|
||
g_test_add_func ("/object/value", test_object_value);
|
||
g_test_add_func ("/object/initially-unowned", test_initially_unowned);
|
||
g_test_add_func ("/object/weak-pointer", test_weak_pointer);
|
||
g_test_add_func ("/object/weak-pointer/clear", test_weak_pointer_clear);
|
||
g_test_add_func ("/object/weak-pointer/clear-function", test_weak_pointer_clear_function);
|
||
g_test_add_func ("/object/weak-pointer/set", test_weak_pointer_set);
|
||
g_test_add_func ("/object/weak-pointer/set-function", test_weak_pointer_set_function);
|
||
g_test_add_func ("/object/weak-ref", test_weak_ref);
|
||
g_test_add_func ("/object/toggle-ref", test_toggle_ref);
|
||
g_test_add_func ("/object/qdata", test_object_qdata);
|
||
g_test_add_func ("/object/qdata2", test_object_qdata2);
|
||
|
||
return g_test_run ();
|
||
}
|