Re: Application Unexpectedly Terminates

From: Rich Hanbidge [MSFT] (richhan_at_online.microsoft.com)
Date: 06/30/04 

Date: Wed, 30 Jun 2004 01:38:49 GMT

Do you have access to eVC?

eVC provides a JIT (Just In Time) Debugger which you can install. If your
application is getting killed by the OS because of an unhandled exception,
the JIT will catch it and prompt you to attach eVC to the process.

Remember that you need to soft reset your device after you install the JIT.
 The OS requires this.

Good luck!

Rich Hanbidge
Visual Studio for Devices
Microsoft Corp. 

-- 
This posting is provided "AS IS" with no warranties, and confers no rights.
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| Thread-Topic: Application Unexpectedly Terminates
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| From: =?Utf-8?B?TWFyayBBcnRlYWdh?= <ng_[at]_markarteaga_[dot]_com>
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<924AF2BB-DF89-472B-9B2B-9963FE8DCD4A@microsoft.com>
| Subject: Re: Application Unexpectedly Terminates
| Date: Tue, 25 May 2004 10:21:05 -0700
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| Clicked the "Send" button too soon...here is the rest of my message....
We still recieve the WM_Close we just don't dispatch the message to the 
application which stops the application from shutting down.   So far this 
hasn't caused a problem and everything works fine.  It's not the best 
solution but for now it's working for now.  From my testing I have a 
feeling the root cause is the application is running out of memory because 
of all the graphics we use and is around 20+ forms.  Currently our app is 
almost 7MB and more than half is graphics.  Let me know what you find.  It 
would be nice to know if I'm on the right track or not.
Mark.
| 
From: =?Utf-8?B?TWFyayBBcnRlYWdh?= <ng_[at]_markarteaga_[dot]_com>
Subject: Re: Application Unexpectedly Terminates
Date: Tue, 25 May 2004 10:26:06 -0700
Newsgroups: microsoft.public.dotnet.framework.compactframework
I suspected it was a memory problem after reading the documentation. That's 
why i started tracking WM_CLOSE and WM_Hibernate.  My only question is we 
never recieve a WM_Hibernate which is the message that is sent when we 
should start freeing up resources.  Is that message surpressed by the CLR 
since that's what should be handling memory and not the CF Application?
     
     ----- Chris Tacke, eMVP wrote: -----
     
     "Unsolicited" WM_CLOSE messages can occur. If the device runs low on 
memory,
     the device manager will notify apps that they need to reduce their 
memory
     footprint if possible.  If after that it is still low, it will start 
closing
     apps. The current app is usually last to die, but if your app is 
running in
     the "background" then it could easily be killed.
     
     -- 
     Chris Tacke, eMVP
     Co-Founder and Advisory Board Member
     www.OpenNETCF.org
     ---
     ---
     Principal Partner
     OpenNETCF Consulting
     www.OpenNETCF.com
     
     
     
     "Bill D" <bdraper@ASKME.com> wrote in message
     news:%23CQGjQnQEHA.3660@tk2msftngp13.phx.gbl...
     > Mark,
     >> Thanks for the reply. In your case, it sounds like your app was
     unexpectedly
     > closing, but you were getting a WM_CLOSE event on the way out? Since 
you
     put
     > this trap in for that event, are you still ever seeing an 
'unsolicited'
     > WM_CLOSE being sent to your application to shut it down? It would be 
good
     to
     > know the root cause of this if it's still happening. From this, we 
will
     put
     > code in to see if we are seeing a WM_CLOSE on the way out. I'll let 
you
     know
     > what we find...
     >> Thanks again,
     > Bill
     >>> "Mark Arteaga" <ng_[at]_markarteaga_[dot]_com> wrote in message
     > news:4ED41613-A309-4B7A-B611-A1E4C11E9E65@microsoft.com...
     >> I had a similar problem but I was getting my form objects disposed 
for
     no
     > reason and then eventually the application would get shutdown.  I 
assumed
     it
     > was a memory problem because the app, like yours is very graphics
     intensive
     > and runs multiple threads accessing webservices.  What I did was 
trap the
     > WM_CLOSE notification (using the ApplicationEX from OpenNETCF.org) 
and
     > ignored that message so the application wouldn't close.   When this
     message
     > was received we tried to release as many resouces as possible(mainly 
UI)
     and
     > force a garbage collection. Our application will be the only 
application
     > running on the device so I don't expect this to be a problem.  We 
also
     tried
     > to trap WM_HIBERNATE to try and release resources before we were 
forced to
     > shutdown (WM_CLOSE) but for some reason that message didn't come 
through
     to
     > the application.
     >>>> The other thing to remember is every process runs in a maximum of 
32mb.
     > Check out this link
     >
     
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcemain4/ht
ml/_wcesdk_Windows_CE_Memory_Architecture.asp
     > for more details on the WinCE Mem Architecture.
     >>>> So far the solution above seems to work and haven't experienced 
any
     > problems.  It's been running for 2-3 mths under development stage.  
I'll
     > know if it really works once it goes into testing!! If someone sees
     anything
     > wrong with the above I would like to hear about it :)
     >>>> BTW I'm running CE 4.2, all QFEs, SP2, and a custom board.
     >>>> Mark Arteaga
     >>>>>>>>>>>>