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?=]

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:la***@vkarlsen.no
http://presentationmode.blogspot.com/

[shawn]

Lasse Vågsæther Karlsen <la***@vkarlsen.nowrote in message
news:e$**************@TK2MSFTNGP06.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]

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" <sh*******@yahoo.comwrote in message
news:OJ**************@TK2MSFTNGP02.phx.gbl...

Lasse Vågsæther Karlsen <la***@vkarlsen.nowrote in message
news:e$**************@TK2MSFTNGP06.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]

From: shawn [mailto:sh*******@yahoo.com]

Posted At: Monday, 10 December 2007 3:18 AM
Posted To: microsoft.public.dotnet.languages.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.