[Gtk-sharp-list] Gtk.Application.Invoke + anonymous delegates == lots of uints?

[Rafael Teixeira]

It is worse: If heap-buddy is showing them up and GC collects them, it
means they are boxed uints (probaly autoboxed ones), what means a lot
of overhead creating/managing objects around the value type, beyond
the memory comsuption.

Definitively we need to find the culprit, probably someone passing a
uint to some method that wants an object. Can you help to better
assess where it could be?

Thanks,

On 12/8/06, 32bitkid <jim at 32bitkid.com> wrote:
>  I seem to be getting a weird allocation of uints when using
> Gtk.Application.Invoke If i run the following code through heap-buddy:
> using System;
> using Gtk;
> using System.Threading;
>
> public class MainWindow : Gtk.Window
> {
>  Gtk.Label Label1;
>
>  public MainWindow() : base ("Test")
>  {
>  this.DeleteEvent += new DeleteEventHandler(OnDeleteEvent);
>
>  Label1 = new Gtk.Label("");
>  this.Add(Label1);
>  this.ShowAll();
>
>  Thread x = new Thread(new ThreadStart(test));
>  x.IsBackground = true;
>  x.Start();
>  }
>
>  int ctr = 0;
>
>  void test()
>  {
>  while(true)
>  {
>  Gtk.Application.Invoke( delegate {
>  ctr++;
>  Label1.Text = ctr.ToString();
>  });
>  Thread.Sleep(10);
>  }
>  }
>
>  protected void OnDeleteEvent( object sender, DeleteEventArgs e)
>  {
>  Application.Quit();
>  e.RetVal = true;
>  }
> }
>
>  I'll get a lot of uints allocated on the heap. Most seem to be cleaned up
> by the garbage collection, but still it doesnt seem quite right. Here is the
> output from heap-buddy, after running for about 5 seconds: $ heap-buddy
> types 10 sorted by count
>
>  Type # Total AvSz AvAge BT#
>  uint 557439 6.4M 12.0 0.0 18337
>  string 18558 863k 47.6 0.6 18418
>  byte[] 18400 357k 19.9 0.0 18400
>  GLib.TimeoutHandler 18392 718k 40.0 0.6 4
>  GLib.Timeout/TimeoutProxy 9196 143k 16.0 0.8 2
>  System.EventHandler 9196 359k 40.0 0.6 2
>  Gtk.Application/InvokeCB 9195 179k 20.0 0.6 1
>  object[] 9186 717k 80.0 0.0 9186
> System.Collections.ArrayList 9182 179k 20.0 0.0 9182
>  System.Text.StringBuilder 9179 215k 24.0 0.0 9179
>
>  Is this a bug, or am I just doing something very wrong. That just seems
> like a LOT of uints. This is basically a stub from another Gtk# program I'm
> working on that is fairly thread intestive. I don't remember seeing this
> kind of behavior before 1.2. I am running mono 1.2.2, on Fedora Core 5. Any
> help would be greatly appriciated. Thanks
> ________________________________
>  View this message in context: Gtk.Application.Invoke + anonymous delegates
> == lots of uints?
>  Sent from the Mono - Gtk# mailing list archive at Nabble.com.
>
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>
>
>


-- 
Rafael "Monoman" Teixeira
---------------------------------------
"The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man." George Bernard Shaw