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gio/tests: Ensure that a GCancellableSource can be used muliple times
Closes: #774
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@ -541,9 +541,11 @@ g_cancellable_cancel (GCancellable *cancellable)
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* signal. Also handles the race condition that may happen
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* if the cancellable is cancelled right before connecting.
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*
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* @callback is called at most once, either directly at the
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* time of the connect if @cancellable is already cancelled,
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* or when @cancellable is cancelled in some thread.
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* @callback is called exactly once each time @cancellable is cancelled,
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* either directly at the time of the connect if @cancellable is already
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* cancelled, or when @cancellable is cancelled in some thread.
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* In case the cancellable is reset via [method@Gio.Cancellable.reset]
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* then the callback can be called again if the @cancellable is cancelled.
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*
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* @data_destroy_func will be called when the handler is
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* disconnected, or immediately if the cancellable is already
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@ -796,6 +796,69 @@ test_cancellable_cancel_reset_connect_races (void)
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g_object_unref (cancellable);
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}
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static gboolean
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source_cancelled_counter_cb (GCancellable *cancellable,
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gpointer user_data)
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{
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guint *n_calls = user_data;
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*n_calls = *n_calls + 1;
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return G_SOURCE_CONTINUE;
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}
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static void
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do_nothing (G_GNUC_UNUSED void *user_data)
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{
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/* An empty timeout/idle once callback function */
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}
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static void
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test_cancellable_source_can_be_fired_multiple_times (void)
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{
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GCancellable *cancellable;
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GSource *source;
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guint n_calls = 0;
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g_test_summary ("Test a cancellable source callback can be called multiple times");
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g_test_bug ("https://gitlab.gnome.org/GNOME/glib/issues/774");
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cancellable = g_cancellable_new ();
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source = g_cancellable_source_new (cancellable);
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g_source_set_callback (source, G_SOURCE_FUNC (source_cancelled_counter_cb),
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&n_calls, NULL);
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g_source_attach (source, NULL);
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g_cancellable_cancel (cancellable);
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g_assert_cmpuint (n_calls, ==, 0);
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while (g_main_context_pending (NULL))
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g_main_context_iteration (NULL, TRUE);
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g_assert_cmpuint (n_calls, ==, 1);
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g_cancellable_cancel (cancellable);
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g_timeout_add_once (100, do_nothing, NULL);
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while (g_main_context_pending (NULL))
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g_main_context_iteration (NULL, TRUE);
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g_assert_cmpuint (n_calls, ==, 1);
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g_cancellable_reset (cancellable);
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g_cancellable_cancel (cancellable);
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g_assert_cmpuint (n_calls, ==, 1);
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while (g_main_context_pending (NULL))
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g_main_context_iteration (NULL, TRUE);
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g_assert_cmpuint (n_calls, ==, 2);
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g_source_unref (source);
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g_object_unref (cancellable);
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}
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int
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main (int argc, char *argv[])
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{
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@ -811,6 +874,7 @@ main (int argc, char *argv[])
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g_test_add_func ("/cancellable/cancel-reset-races", test_cancellable_cancel_reset_races);
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g_test_add_func ("/cancellable/cancel-reset-connect-races", test_cancellable_cancel_reset_connect_races);
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g_test_add_func ("/cancellable-source/threaded-dispose", test_cancellable_source_threaded_dispose);
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g_test_add_func ("/cancellable-source/can-be-fired-multiple-times", test_cancellable_source_can_be_fired_multiple_times);
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return g_test_run ();
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}
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