[Mono-dev] TextBoxBase Out of Memory Problem

Charlie Poole charlie at pooleconsulting.com
Fri Jan 19 21:23:50 EST 2007 

Hi All,

While it's probably not a good idea to keep hitting a text box with
AppendText calls, that's what the NUnit Gui does at the moment, resulting
in the stack trace below.

This is a bit hard to repro, since NUnit tries to handle the unhandled 
exception, making matters even worse. I got it by running the NUnit tests
with labels turned on, so that each test caused at least one write to the
output tab. To get the stack trace, I modified NUnit to not capture
unhandled exceptions and ran it under mono with --debug. If this is not
already a known problem, I can try to create a simple test for it.

Charlie


D:\Dev\NUnit\nunit-2.4\build\mono\1.0\debug>mono --debug nunit.exe

Unhandled Exception: System.Reflection.TargetInvocationException: Exception
has
been thrown by the target of an invocation. --->
System.Reflection.TargetInvocat
ionException: Exception has been thrown by the target of an invocation. --->
Sys
tem.OutOfMemoryException: Out of memory.
  at System.Drawing.GDIPlus.CheckStatus (Status status) [0x00078] in
C:\cygwin\t
mp\scratch\mono-1.2.2\mcs\class\System.Drawing\System.Drawing\gdipFunctions.
cs:1
92
  at System.Drawing.Graphics.FromHdc (IntPtr hdc) [0x00009] in
C:\cygwin\tmp\scr
atch\mono-1.2.2\mcs\class\System.Drawing\System.Drawing\Graphics.cs:1673
  at System.Drawing.Font.ToLogFont (System.Object logFont) [0x0007a] in
C:\cygwi
n\tmp\scratch\mono-1.2.2\mcs\class\System.Drawing\System.Drawing\Font.cs:620
  at System.Drawing.Font.ToHfont () [0x00059] in
C:\cygwin\tmp\scratch\mono-1.2.
2\mcs\class\System.Drawing\System.Drawing\Font.cs:267
  at (wrapper remoting-invoke-with-check) System.Drawing.Font:ToHfont ()
  at System.Windows.Forms.XplatUIWin32.GetFontMetrics
(System.Drawing.Graphics g
, System.Drawing.Font font, System.Int32& ascent, System.Int32& descent)
[0x0001
3] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Wi
ndows.Forms\XplatUIWin32.cs:2019
  at System.Windows.Forms.XplatUI.GetFontMetrics (System.Drawing.Graphics g,
Sys
tem.Drawing.Font font, System.Int32& ascent, System.Int32& descent)
[0x00000] in
 
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Wind
ows
.Forms\XplatUI.cs:516
  at System.Windows.Forms.Line.RecalculateLine (System.Drawing.Graphics g,
Syste
m.Windows.Forms.Document doc) [0x002dd] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\
class\Managed.Windows.Forms\System.Windows.Forms\TextControl.cs:525
  at System.Windows.Forms.Document.RecalculateDocument
(System.Drawing.Graphics
g, Int32 start, Int32 end, Boolean optimize) [0x0007f] in
C:\cygwin\tmp\scratch\
mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Windows.Forms\TextControl.
cs:3
791
  at System.Windows.Forms.Document.RecalculateDocument
(System.Drawing.Graphics
g) [0x00000] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms
\System.Windows.Forms\TextControl.cs:3745
  at System.Windows.Forms.TextBoxBase.CalculateDocument () [0x0000c] in
C:\cygwi
n\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Windows.Form
s\Te
xtBoxBase.cs:1591
  at System.Windows.Forms.TextBoxBase.AppendText (System.String text)
[0x00077]
in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Wind
o
ws.Forms\TextBoxBase.cs:639
  at <0x00000> <unknown method>
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke
(ob
ject,object[])
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags
invoke
Attr, System.Reflection.Binder binder, System.Object[] parameters,
System.Global
ization.CultureInfo culture) [0x00040] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\c
lass\corlib\System.Reflection\MonoMethod.cs:143 --- End of inner exception
stack
 trace ---

  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags
invoke
Attr, System.Reflection.Binder binder, System.Object[] parameters,
System.Global
ization.CultureInfo culture) [0x00065] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\c
lass\corlib\System.Reflection\MonoMethod.cs:149
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[]
par
ameters) [0x00000] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System.R
eflection\MethodBase.cs:86
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00051] in
C:\cy
gwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\Delegate.cs:285
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args)
[0x00018]
 in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\MulticastDelegate.c
s:67
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in
C:\cygwin
\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\Delegate.cs:257
  at System.Windows.Forms.Control.Invoke (System.Delegate method,
System.Object[
] args) [0x0000b] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.
Forms\System.Windows.Forms\Control.cs:2931
  at (wrapper remoting-invoke-with-check)
System.Windows.Forms.Control:Invoke (S
ystem.Delegate,object[])
  at NUnit.UiKit.TextBoxWriter.AppendToTextBox (System.String s) [0x00000]
in D:
\Dev\NUnit\nunit-2.4\src\GuiComponents\UiKit\TextBoxWriter.cs:176
  at NUnit.UiKit.TextBoxWriter.Write (System.String s) [0x00034] in
D:\Dev\NUnit
\nunit-2.4\src\GuiComponents\UiKit\TextBoxWriter.cs:125
  at NUnit.UiKit.TextBoxWriter.Write (Char c) [0x00000] in
D:\Dev\NUnit\nunit-2.
4\src\GuiComponents\UiKit\TextBoxWriter.cs:108
  at System.IO.TextWriter.Write (System.Char[] buffer, Int32 index, Int32
count)
 [0x0004f] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System.IO\TextWr
iter.cs:201
  at System.IO.TextWriter.Write (System.Char[] value) [0x00008] in
C:\cygwin\tmp
\scratch\mono-1.2.2\mcs\class\corlib\System.IO\TextWriter.cs:128
  at System.IO.TextWriter.WriteLine () [0x00000] in
C:\cygwin\tmp\scratch\mono-1
.2.2\mcs\class\corlib\System.IO\TextWriter.cs:217
  at System.IO.TextWriter.WriteLine (System.String format, System.Object
arg0) [
0x00008] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System.IO\TextWrit
er.cs:297
  at NUnit.UiKit.ResultTabs.OnTestStarting (System.Object sender,
NUnit.Util.Tes
tEventArgs args) [0x00016] in
D:\Dev\NUnit\nunit-2.4\src\GuiComponents\UiKit\Res
ultTabs.cs:376
  at <0x00000> <unknown method>
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke
(ob
ject,object[])
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags
invoke
Attr, System.Reflection.Binder binder, System.Object[] parameters,
System.Global
ization.CultureInfo culture) [0x00040] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\c
lass\corlib\System.Reflection\MonoMethod.cs:143 --- End of inner exception
stack
 trace ---

  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags
invoke
Attr, System.Reflection.Binder binder, System.Object[] parameters,
System.Global
ization.CultureInfo culture) [0x00065] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\c
lass\corlib\System.Reflection\MonoMethod.cs:149
  at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[]
par
ameters) [0x00000] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System.R
eflection\MethodBase.cs:86
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00051] in
C:\cy
gwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\Delegate.cs:285
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args)
[0x00018]
 in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\MulticastDelegate.c
s:67
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in
C:\cygwin
\tmp\scratch\mono-1.2.2\mcs\class\corlib\System\Delegate.cs:257
  at System.Windows.Forms.XplatUIDriverSupport.ExecuteClientMessage
(GCHandle gc
handle) [0x0003d] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.
Forms\System.Windows.Forms\XplatUIDriver.cs:335
  at System.Windows.Forms.XplatUIWin32.GetMessage (System.Windows.Forms.MSG&
msg
, IntPtr hWnd, Int32 wFilterMin, Int32 wFilterMax, Boolean blocking)
[0x00131] i
n
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Wind
ow
s.Forms\XplatUIWin32.cs:1532
  at System.Windows.Forms.XplatUIWin32.GetMessage (System.Object queue_id,
Syste
m.Windows.Forms.MSG& msg, IntPtr hWnd, Int32 wFilterMin, Int32 wFilterMax)
[0x00
000] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.
Windows.Forms\XplatUIWin32.cs:1480
  at System.Windows.Forms.XplatUI.GetMessage (System.Object queue_id,
System.Win
dows.Forms.MSG& msg, IntPtr hWnd, Int32 wFilterMin, Int32 wFilterMax)
[0x00000]
in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\System.Wind
o
ws.Forms\XplatUI.cs:527
  at System.Windows.Forms.Application.RunLoop (Boolean Modal,
System.Windows.For
ms.ApplicationContext context) [0x002be] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs
\class\Managed.Windows.Forms\System.Windows.Forms\Application.cs:552
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form
mainForm) [
0x00000] in
C:\cygwin\tmp\scratch\mono-1.2.2\mcs\class\Managed.Windows.Forms\Sys
tem.Windows.Forms\Application.cs:430
  at NUnit.Gui.AppEntry.Main (System.String[] args) [0x001d1] in
D:\Dev\NUnit\nu
nit-2.4\src\GuiRunner\nunit-gui\AppEntry.cs:123
  at NUnit.Gui.Class1.Main (System.String[] args) [0x00000] in
D:\Dev\NUnit\nuni
t-2.4\src\GuiRunner\nunit-gui-exe\Class1.cs:16

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