Source.isDestroyed

Returns whether @source has been destroyed.

This is important when you operate upon your objects from within idle handlers, but may have freed the object before the dispatch of your idle handler.

|[<!-- language="C" --> static gboolean idle_callback (gpointer data) { SomeWidget *self = data;

GDK_THREADS_ENTER (); // do stuff with self self->idle_id = 0; GDK_THREADS_LEAVE ();

return G_SOURCE_REMOVE; }

static void some_widget_do_stuff_later (SomeWidget *self) { self->idle_id = g_idle_add (idle_callback, self); }

static void some_widget_finalize (GObject *object) { SomeWidget *self = SOME_WIDGET (object);

if (self->idle_id) g_source_remove (self->idle_id);

G_OBJECT_CLASS (parent_class)->finalize (object); } ]|

This will fail in a multi-threaded application if the widget is destroyed before the idle handler fires due to the use after free in the callback. A solution, to this particular problem, is to check to if the source has already been destroy within the callback.

|[<!-- language="C" --> static gboolean idle_callback (gpointer data) { SomeWidget *self = data;

GDK_THREADS_ENTER (); if (!g_source_is_destroyed (g_main_current_source ())) { // do stuff with self } GDK_THREADS_LEAVE ();

return FALSE; } ]|

Return: %TRUE if the source has been destroyed

class Source
bool
isDestroyed
()

Meta

Since

2.12