473,322 Members | 1,699 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,322 software developers and data experts.

Is This .NET Problem

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?

My application has a requirement that the custom dlls loadded into DLLHOST
can be unloaded(using cofreeunsued libraries) and modified whenever needed,
because of the above problem unakbe to update the custom dll.
steps to be folowed to simuate the problem.
Step1) create a C++ COM component named "A" and another C++ COM component
named "B" which creates "A" upon a method invocation let us say
CreateMe().Add another method in "B" to unload the component "A" letus say
KillMe()..in this method release the "A" reference and call
CoFreeUnUsedLibraries() so that "A" is unloaded.
Step2)Add "B" to DLLHOST using Component services asministrative tool
Step3)create a client application which creates component "B" anc calls
CreateMe() so that "A" is also created.Add another button to call KillMe()
of "B".
Step4)Open "A" in devenv. and attach to the DLLHOST(make sure dbgproxy is
running..as we are debugging Native C++ applicatipn to start this use net
start dgbproxy.exe from .NET command prompt).Now you can debugger loading
systems dll's and custom dlls in the output box..Now open Process
explorer(tool from sysinternals.com) and select teh View Handles option from
View menu..A.dll FILE handle is present here.
Step5)Detach "A" from DLLHOST
Step6)Now click on the button of the client application which calls KillMe()
of "B".Now the "A" DLL is unloaded. BUT Still the FILE reference for "A"
exists under DLLHOST

Any suggestions are welcome.
Regards,
Ramesh

Nov 16 '05 #1
0 955

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

11
by: Kostatus | last post by:
I have a virtual function in a base class, which is then overwritten by a function of the same name in a publically derived class. When I call the function using a pointer to the derived class...
117
by: Peter Olcott | last post by:
www.halting-problem.com
18
by: Ian Stanley | last post by:
Hi, Continuing my strcat segmentation fault posting- I have a problem which occurs when appending two sting literals using strcat. I have tried to fix it by writing my own function that does the...
28
by: Jon Davis | last post by:
If I have a class with a virtual method, and a child class that overrides the virtual method, and then I create an instance of the child class AS A base class... BaseClass bc = new ChildClass();...
6
by: Ammar | last post by:
Dear All, I'm facing a small problem. I have a portal web site, that contains articles, for each article, the end user can send a comment about the article. The problem is: I the comment length...
16
by: Dany | last post by:
Our web service was working fine until we installed .net Framework 1.1 service pack 1. Uninstalling SP1 is not an option because our largest customer says service packs marked as "critical" by...
2
by: Mike Collins | last post by:
I cannot get the correct drop down list value from a drop down I have on my web form. I get the initial value that was loaded in the list. It was asked by someone else what the autopostback was...
0
by: =?Utf-8?B?am8uZWw=?= | last post by:
Hello All, I am developing an Input Methop (IM) for PocketPC / Windows Mobile (PPC/WM). On some devices the IM will not start. The IM appears in the IM-List but when it is selected from the...
1
by: sherifbk | last post by:
Problem description ============== - I have 4 clients and 1 server (SQL server) - 3 clients are Monitoring console 1 client is operation console - Monitoring console collects some data from...
9
by: AceKnocks | last post by:
I am working on a framework design problem in which I have to design a C++ based framework capable of solving three puzzles for now but actually it should work with a general puzzle of any kind and I...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
1
by: CloudSolutions | last post by:
Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.