A dead process

[shawn]

A Windows service A which starts multiple instances of an application B at
random time.

Both A and B are written in C#.

It quite often shows in Task Manager that CPU time for B is 00:00:00 and
memory usage stay the same and never changes.

Can we assume that B is stuck based on this observation? Also, debug code at
the very beginning of B is never run through...

What could be the cause of the problem of B being stuck and how to debug it?

Thanks in advance!

[=?ISO-8859-1?Q?Lasse_V=E5gs=E6ther_Karlsen?=]

Re: A dead process

shawn wrote:

A Windows service A which starts multiple instances of an application B at
random time.
>
Both A and B are written in C#.
>
It quite often shows in Task Manager that CPU time for B is 00:00:00 and
memory usage stay the same and never changes.
>
Can we assume that B is stuck based on this observation? Also, debug code at
the very beginning of B is never run through...
>
What could be the cause of the problem of B being stuck and how to debug it?
>
Thanks in advance!
>
>

Just as a hunch, could the program be attempting to display a message box?

If it's started by a service, it will most likely run under a different
user context than the logged on interactive user, so message boxes might
not be displayed.

--
Lasse Vågsæther Karlsen
mailto:lasse@vk arlsen.no

http://presentationmode.blogspot.com/

[shawn]

Re: A dead process

Lasse Vågsæther Karlsen <lasse@vkarlsen .nowrote in message
news:e$LqQBpOIH A.4480@TK2MSFTN GP06.phx.gbl...

shawn wrote:

A Windows service A which starts multiple instances of an application B

at

random time.

Both A and B are written in C#.

It quite often shows in Task Manager that CPU time for B is 00:00:00 and
memory usage stay the same and never changes.

Can we assume that B is stuck based on this observation? Also, debug

code at

the very beginning of B is never run through...

What could be the cause of the problem of B being stuck and how to debug

it?

Thanks in advance!

Just as a hunch, could the program be attempting to display a message box?
>
If it's started by a service, it will most likely run under a different
user context than the logged on interactive user, so message boxes might
not be displayed.
>

Thanks, Lasse!

First, Application B is a console one. Of course, it could cause some
Windows error/warning messagebox popped up.

Second, most instances of B running and shutting down themselves fine while
one or two of B hanging there.

"a different user context than the logged on interactive user"

I'm not sure what's this and how to check on it...Could you elaborate this?

[Eternal Snow]

Re: A dead process

Please check this:
Whether you wrote a MessageBos.Show (ex.ToString()) in catch block of TRY.

Remove all MessageBox or other UI like Form. Windows Service of c# cannot
support those.

"shawn" <shawnl913@yaho o.comwrote in message
news:OJRoKVpOIH A.4948@TK2MSFTN GP02.phx.gbl...

Lasse Vågsæther Karlsen <lasse@vkarlsen .nowrote in message
news:e$LqQBpOIH A.4480@TK2MSFTN GP06.phx.gbl...

>shawn wrote:

A Windows service A which starts multiple instances of an application B

at

random time.
>
Both A and B are written in C#.
>
It quite often shows in Task Manager that CPU time for B is 00:00:00
and
memory usage stay the same and never changes.
>
Can we assume that B is stuck based on this observation? Also, debug

code at

the very beginning of B is never run through...
>
What could be the cause of the problem of B being stuck and how to
debug

it?

>
Thanks in advance!
>
>

>Just as a hunch, could the program be attempting to display a message
>box?
>>
>If it's started by a service, it will most likely run under a different
>user context than the logged on interactive user, so message boxes might
>not be displayed.
>>

>
Thanks, Lasse!
>
First, Application B is a console one. Of course, it could cause some
Windows error/warning messagebox popped up.
>
Second, most instances of B running and shutting down themselves fine
while
one or two of B hanging there.
>
"a different user context than the logged on interactive user"
>
I'm not sure what's this and how to check on it...Could you elaborate
this?
>
>

[Wingot]

Re: A dead process

From: shawn [mailto:shawnl91 3@yahoo.com]

Posted At: Monday, 10 December 2007 3:18 AM
Posted To: microsoft.publi c.dotnet.langua ges.csharp
Conversation: A dead process
Subject: A dead process
>
A Windows service A which starts multiple instances of an application

B

at
random time.
>
Both A and B are written in C#.
>
It quite often shows in Task Manager that CPU time for B is 00:00:00
and
memory usage stay the same and never changes.
>
Can we assume that B is stuck based on this observation? Also, debug
code at
the very beginning of B is never run through...
>
What could be the cause of the problem of B being stuck and how to
debug it?
>
Thanks in advance!

Hi shawn,

Is it possible for you to post the code listing for B? Or more
specifically, the parts that are called when the service is started.