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61b0e1c8d4
In some cases, signal arguments have to be collected, even if there are i no signal handlers connected (e.g. for GVariant parameters, where collection consumes a floating variant). Based on a patch by Christian Persch. Bug #643624.
92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
#include <glib-object.h>
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typedef struct _Test Test;
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typedef struct _TestClass TestClass;
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struct _Test
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{
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GObject parent_instance;
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};
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struct _TestClass
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{
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GObjectClass parent_class;
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void (* variant_changed) (Test *, GVariant *);
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};
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static GType test_get_type (void);
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G_DEFINE_TYPE (Test, test, G_TYPE_OBJECT)
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static void
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test_init (Test *test)
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{
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}
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static void
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test_class_init (TestClass *klass)
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{
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g_signal_new ("variant-changed-no-slot",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_MUST_COLLECT,
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0,
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NULL, NULL,
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g_cclosure_marshal_VOID__VARIANT,
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G_TYPE_NONE,
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1,
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G_TYPE_VARIANT);
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g_signal_new ("variant-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST | G_SIGNAL_MUST_COLLECT,
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G_STRUCT_OFFSET (TestClass, variant_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VARIANT,
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G_TYPE_NONE,
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1,
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G_TYPE_VARIANT);
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}
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static void
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test_variant_signal (void)
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{
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Test *test;
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GVariant *v;
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/* Tests that the signal emission consumes the variant,
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* even if there are no handlers connected.
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*/
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test = g_object_new (test_get_type (), NULL);
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v = g_variant_new_boolean (TRUE);
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g_variant_ref (v);
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g_assert (g_variant_is_floating (v));
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g_signal_emit_by_name (test, "variant-changed-no-slot", v);
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g_assert (!g_variant_is_floating (v));
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g_variant_unref (v);
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v = g_variant_new_boolean (TRUE);
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g_variant_ref (v);
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g_assert (g_variant_is_floating (v));
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g_signal_emit_by_name (test, "variant-changed", v);
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g_assert (!g_variant_is_floating (v));
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g_variant_unref (v);
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g_object_unref (test);
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}
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/* --- */
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int
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main (int argc,
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char *argv[])
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{
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g_type_init ();
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g_test_init (&argc, &argv, NULL);
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g_test_add_func ("/gobject/signals/variant", test_variant_signal);
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return g_test_run ();
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}
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