How to tackle the problem:
- use !threads to look for locks (in the results there is a column "Lock Count")
- Results: there is no lock on any thread
- Check the GUI/main thread: !CLRStack
0:000> !CLRStack
Child SP IP Call Site
0041de38 7598f5be [InlinedCallFrame: 0041de38] System.Windows.Forms.UnsafeNativeMethods.WaitMessage()
0041de34 6cf3737a System.Windows.Forms.Application+ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr, Int32, Int32)
0041ded0 6cf36e2c System.Windows.Forms.Application+ThreadContext.RunMessageLoopInner(Int32, System.Windows.Forms.ApplicationContext)
0041df28 6cf36c81 System.Windows.Forms.Application+ThreadContext.RunMessageLoop(Int32, System.Windows.Forms.ApplicationContext)
0041df58 6d42fefb System.Windows.Forms.Application.RunDialog(System.Windows.Forms.Form)
0041df6c 6d459f83 System.Windows.Forms.Form.ShowDialog(System.Windows.Forms.IWin32Window)
0041df70 6d45a1b7 [InlinedCallFrame: 0041df70]
0041e008 6d45a1b7 System.Windows.Forms.Form.ShowDialog()
0041e00c 00be1b5f NS_DGFWKP_GUI.DGFWKP_GUI.CollectButton_Click(System.Object, System.EventArgs)
0041e074 6ced4ae8 System.Windows.Forms.Control.OnClick(System.EventArgs)
0041e08c 066c42ba DevExpress.XtraEditors.BaseButton.OnClick(System.EventArgs)
0041e09c 066c41b7 DevExpress.XtraEditors.BaseButton.OnMouseUp(System.Windows.Forms.MouseEventArgs)
0041e0d0 6d4395b5 System.Windows.Forms.Control.WmMouseUp(System.Windows.Forms.Message ByRef, System.Windows.Forms.MouseButtons, Int32)
0041e164 6d7fa1bf System.Windows.Forms.Control.WndProc(System.Windows.Forms.Message ByRef)
0041e168 0fb17195 [InlinedCallFrame: 0041e168]
...
- So, it is about a modal dialog that it is displayed in the back of the main window. Most probably.
- It should be used method instead to avoid this issue.
- Now the problem is who is NS_DGFWKP_GUI .. intuitive name :)
- Use !ip2md to find out more info about NS_DGFWKP_GUI.DGFWKP_GUI.CollectButton_Click method
0:000> !ip2md 00be1b5f
MethodDesc: 1da5450c
Method Name: NS_DGFWKP_GUI.DGFWKP_GUI.CollectButton_Click(System.Object, System.EventArgs)
Class: 1db037dc
MethodTable: 1da54620
mdToken: 06000047
Module: 1da53c70
IsJitted: yes
CodeAddr: 00be1070
Transparency: Critical
- Use !dumpmodule to find out more info about the module
0:000> !dumpmodule -mt 1da53c70
Name: C:\Program Files (x86)\Ixia\IxNetwork\7.0.0.104-EB\diaggui.dll
Attributes: PEFile
Assembly: 11faf8a8
LoaderHeap: 00000000
TypeDefToMethodTableMap: 1db0199c
TypeRefToMethodTableMap: 1db01a24
MethodDefToDescMap: 1db01c60
FieldDefToDescMap: 1db01f3c
MemberRefToDescMap: 1db0206c
FileReferencesMap: 1db023fc
AssemblyReferencesMap: 1db02400
MetaData start address: 1e18d498 (26680 bytes)
Types defined in this module
MT TypeDef Name
------------------------------------------------------------------------------
1da56448 0x02000002 NS_DGFWKP_GUI.ChassisWindow
2a30b670 0x02000003 NS_DGFWKP_GUI.ChassisChain
2a30b754 0x02000004 NS_DGFWKP_GUI.Chassis
- End "voila", I find the responsible module/package for this issue
- It will be nice if these namespaces will have a meaningful name in the future.
