Attach causes the FILE references to the system dll's

[Ramesh K]

Hi All,
During Attach to a process like DLLHOST ,DLLHOST has FILE references to
the system dlls like " odbc32.dll etc..(One can observer this in process
explorer tool of Sysinternals.com by selecting the "View Handles" from the
View menu)

But during the Detach process same handles are not getting released by the
DLLHOST process.WHY?
Any suggestions are welcome.
Regards,
Ramesh

[Willy Denoyette [MVP]]

What exactly do you mean with attach to a process?
If you are talking about a debugger attaching to a process, why would you
expect the handles are getting released when the debugger detaches?
The handles are obtained by a the DLLHOST loading the dll's? and will only
be released by the DLHOST when he desides to do so.

Willy.
like DLLHOST ,DLLHOST has FILE references to

the system dlls like " odbc32.dll etc..(One can observer this in process
explorer tool of Sysinternals.com by selecting the "View Handles" from the
View menu)

But during the Detach process same handles are not getting released by the
DLLHOST process.WHY?
Any suggestions are welcome.
Regards,
Ramesh

[ramesh kodati]

First of all Thanks for the reply..
What is mean by Attach to a process is let us suppose there is a
component "A" that is installed under component services, which creates
another normal DLL component "B".
Now if i try to debug "B" component , "B" has to attach to DLLHOST using
the Debug+Process menu of devenv. After attaching there is a FILE Handle
for the "B" component stored by DLLHOST..NOW Detach from the
DLLHOST..Now if the component "B" is unloaded using
CoFreeUnUsedLibraries() "B" is not in the memory of DLLHOST, but DLLHOST
still holds the FILE Handle for "B".

FYI..The term FILE Handle i used is different from the DLL reference..

My application's user updates the custom dll's whenever needed by
compiling the custom component using VC .NET.As the FILE Handle for "B"
is still in DLLHOSt recompilation of "B" is not possible even after
CoFreeUnUsedLibraries()..

Regards,
Ramesh
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[Willy Denoyette [MVP]]

Please don't multipost, the right NG for these sort of questions is
microsoft.public.dotnet.framework.component_servic es.
See my reply posted in -> microsoft.public.dotnet.framework.interop.

Willy.

"ramesh kodati" <ra**********@rediffmail.com> wrote in message
news:uL**************@TK2MSFTNGP09.phx.gbl...

First of all Thanks for the reply..
What is mean by Attach to a process is let us suppose there is a
component "A" that is installed under component services, which creates
another normal DLL component "B".
Now if i try to debug "B" component , "B" has to attach to DLLHOST using
the Debug+Process menu of devenv. After attaching there is a FILE Handle
for the "B" component stored by DLLHOST..NOW Detach from the
DLLHOST..Now if the component "B" is unloaded using
CoFreeUnUsedLibraries() "B" is not in the memory of DLLHOST, but DLLHOST
still holds the FILE Handle for "B".

FYI..The term FILE Handle i used is different from the DLL reference..

My application's user updates the custom dll's whenever needed by
compiling the custom component using VC .NET.As the FILE Handle for "B"
is still in DLLHOSt recompilation of "B" is not possible even after
CoFreeUnUsedLibraries()..

Regards,
Ramesh
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Don't just participate in USENET...get rewarded for it!