Hello All,
I am having some trouble getting my head round clutter threads. I seem
to keep running in to the same problems when adding actors from a new
thread. Please see my code below;
// clutter_thread_test.cs created with MonoDevelop
// User: danhigham at 15:30 10/12/2008
//
// To change standard headers go to Edit->Preferences->Coding->Standard Headers
//
using System;
using System.Threading;
using Clutter;
namespace clutter_thread_test
{
public class clutter_thread_test
{
static void HandleKeyPress (object o, KeyPressEventArgs args)
{
KeyEvent _event = args.Event;
switch ((int)_event.HardwareKeycode)
{
case 9 : //esc
Clutter.Main.Quit();
break;
}
}
public clutter_thread_test()
{
}
public void start_threads()
{
for (int x = 0; x < 10; x++){
addRect(x * 100, x * 100);
Thread.Sleep(100);
}
for (int x = 0; x < 10; x++){
addRect(x * 100, 100);
Thread.Sleep(100);
}
/*
int z=0;
while(z<10){
//addRect(z * 100, 100);
z++;
}
*/
//addRect(300, 50);
}
private bool addRect (int x, int y){
Rectangle rect = new Rectangle(new Clutter.Color (0xff,
0x00, 0x00, 0xff));
rect.SetPosition(x,y);
rect.SetSize(50,50);
Clutter.Threads.Enter();
Clutter.Stage.Default.AddActor(rect);
Clutter.Threads.Leave();
return true;
}
static void Main () {
if (!GLib.Thread.Supported)
GLib.Thread.Init ();
Clutter.Threads.Init ();
ClutterRun.Init ();
Stage stage = Stage.Default;
stage.SetSize(800,600);
clutter_thread_test test = new clutter_thread_test();
stage.ShowAll ();
stage.KeyPressEvent += HandleKeyPress;
Thread oThread = new Thread(new
ThreadStart(test.start_threads));
//oThread.IsBackground = true;
oThread.Start();
ClutterRun.Main ();
}
}
}
Whenever I run this, it seems ok but shortly after all the actors are
added I get the following errors;
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa360328'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa360260'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa360198'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa3604b8'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa3603f0'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa360710'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance with invalid (NULL) class pointer
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_emit_valist: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **: instance of invalid non-instantiatable type
`<invalid>'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-CRITICAL **: g_signal_handlers_destroy: assertion
`G_TYPE_CHECK_INSTANCE (instance)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa3750c8'
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
Clutter-CRITICAL **: clutter_actor_unrealize: assertion
`CLUTTER_IS_ACTOR (self)' failed
(/home/danhigham/Projects/mono/clutter_thread_test/bin/Debug/clutter_thread_test.exe:9043):
GLib-GObject-WARNING **:
/build/buildd/glib2.0-2.18.2/gobject/gsignal.c:2916: signal id `4' is
invalid for instance `0xa375000'
Any help on this would be most appreciated as I have been struggling
with it for a couple of days now to no avail.
Thanks and kind regards
--
Dan Higham
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