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DnD hangs in MT Refresh()ing [message #24717]

Thu, 28 January 2010 16:58

kohait00 is currently offline

kohait00
Messages: 939
Registered: July 2009
Location: Germany

Experienced Contributor

hi people

i am currently struggeling with a GUI / MT behaviour of U++ Ctrl stuff. i attached a Test environment, a modified CoWork. it does the following.

it fires up some CoWork Threads/Jobs, which simply do a

while(dorun)
{
  Refresh(); //which internally does GuiLock somewhere, no problem, THEORETICALLY
  Sleep(1);
}

and the Paint paints something dynamic, to see if it still is running something.

there is also a TreeCtrl, filled in same way as TreCtrlDnd example,

PROBLEM/BUG: start DnD some elemen of TreeCtrl without releasing it, soon the running Threads will freeze and not perform any refresh anymore. if minimizing and maximizing again, it starts to work, having performed its work; >> but until than it hangs !!!

do i misunderstand somehow the concept of GuiLock and MT things here? it seems to me that its kind of a deadlock with maybe one of the sPteLock, StaticMutex or GlobalMutex or the like..any guess?

BACKGROUND:

i am working on a application that uses I/O Completion Ports Queue (Win32 specific) and a CoWork threads pool, which performs he completion tasks. i receive periodic, frequent data, which i directly push throough to controls, which should be ok, since they somewhere invoke Refresh() which will do a GuiLock. so tey should be ok. and it works, that far. as soon as i start to DnD things, while a control, which is beeing driven directly by the completion threads for refreshment, is open, the whole thing hangs/freezes without mercy. so i tried to make a simple test. which almost does the same, but my own application is not recoverable. if i stop the debuger it points me to some point in ntdll, which smells of Mutex or Critical Section or what.

Attachment: CoWork.rar
(Size: 7.33KB, Downloaded 324 times)

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[Message index]

		DnD hangs in MT Refresh()ing By: kohait00 on Thu, 28 January 2010 16:58
		Re: DnD hangs in MT Refresh()ing By: mirek on Thu, 28 January 2010 23:55
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 00:22
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 08:45
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 09:32
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 10:31
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:17
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:28
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 11:46
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:57
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 11:58
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 12:48
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 12:30
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 10:34
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 13:08
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 13:21
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 13:32
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 14:49
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Fri, 29 January 2010 16:40
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 29 January 2010 19:43
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Mon, 01 February 2010 14:52
		Re: DnD hangs in MT Refresh()ing By: mirek on Tue, 02 February 2010 19:15
		Re: DnD hangs in MT Refresh()ing By: mirek on Wed, 03 February 2010 12:32
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Thu, 04 February 2010 12:37
		Re: DnD hangs in MT Refresh()ing By: mirek on Fri, 05 February 2010 10:43
		Re: DnD hangs in MT Refresh()ing By: kohait00 on Mon, 08 February 2010 21:55

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