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29ef821766
This commit adds a test to ensure that during a signal emission, if a signal handler gets disconnected, it won't be run, even if it would have run before the disconnection.
136 lines
3.9 KiB
C
136 lines
3.9 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 2013 Red Hat, Inc.
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* Copy and pasted from accumulator.c and modified.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "TestSignals"
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#undef G_DISABLE_ASSERT
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#undef G_DISABLE_CHECKS
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#undef G_DISABLE_CAST_CHECKS
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#include <glib-object.h>
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#include "testcommon.h"
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/* What this test tests is the behavior of signal disconnection
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* from within a signal handler for the signal being disconnected.
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*
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* The test demonstrates that signal handlers disconnected from a signal
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* from an earlier handler in the same emission will not be run.
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*
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* It also demonstrates that signal handlers connected from a signal
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* from an earlier handler in the same emission will not be run.
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*/
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/*
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* TestObject, a parent class for TestObject
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*/
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#define TEST_TYPE_OBJECT (test_object_get_type ())
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typedef struct _TestObject TestObject;
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typedef struct _TestObjectClass TestObjectClass;
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static gboolean callback1_ran = FALSE, callback2_ran = FALSE, callback3_ran = FALSE, default_handler_ran = FALSE;
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struct _TestObject
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{
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GObject parent_instance;
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};
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struct _TestObjectClass
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{
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GObjectClass parent_class;
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void (*test_signal) (TestObject *object);
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};
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static GType test_object_get_type (void);
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static void
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test_object_real_signal (TestObject *object)
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{
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default_handler_ran = TRUE;
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}
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static void
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test_object_signal_callback3 (TestObject *object,
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gpointer data)
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{
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callback3_ran = TRUE;
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}
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static void
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test_object_signal_callback2 (TestObject *object,
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gpointer data)
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{
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callback2_ran = TRUE;
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}
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static void
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test_object_signal_callback1 (TestObject *object,
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gpointer data)
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{
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callback1_ran = TRUE;
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g_signal_handlers_disconnect_by_func (G_OBJECT (object),
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test_object_signal_callback2,
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data);
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g_signal_connect (object, "test-signal",
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G_CALLBACK (test_object_signal_callback3), NULL);
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}
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static void
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test_object_class_init (TestObjectClass *class)
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{
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class->test_signal = test_object_real_signal;
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g_signal_new ("test-signal",
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G_OBJECT_CLASS_TYPE (class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (TestObjectClass, test_signal),
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NULL, NULL, NULL, G_TYPE_NONE, 0);
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}
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static DEFINE_TYPE(TestObject, test_object,
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test_object_class_init, NULL, NULL,
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G_TYPE_OBJECT)
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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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TestObject *object;
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g_log_set_always_fatal (g_log_set_always_fatal (G_LOG_FATAL_MASK) |
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G_LOG_LEVEL_WARNING |
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G_LOG_LEVEL_CRITICAL);
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object = g_object_new (TEST_TYPE_OBJECT, NULL);
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g_signal_connect (object, "test-signal",
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G_CALLBACK (test_object_signal_callback1), NULL);
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g_signal_connect (object, "test-signal",
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G_CALLBACK (test_object_signal_callback2), NULL);
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g_signal_emit_by_name (object, "test-signal");
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g_assert (callback1_ran);
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g_assert (!callback2_ran);
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g_assert (!callback3_ran);
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g_assert (default_handler_ran);
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return 0;
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}
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