How to re-enter a thread?

I'm using async delegate calls. I would like to re-enter my initial thread
after the callback. (I'm not using UI controls, so Control.Invoke is not the solution.) How can I manually implement behavior like Control.Invoke? How
can I re-enter my initial thread? Any suggestions?
Thanks!
Mountain

I already searched Google Groups and found something on this topic, but no
solution:
http://groups.google.com/groups?hl=e...TNGP12.phx.gbl
Here's the most relevant prior post I found (again, no solution):
From: Lior Amar (li*******@hotm ail.com)
Subject: Re: Threads and Delegates
View: Complete Thread (18 articles)
Original Format
Newsgroups: microsoft.publi c.dotnet.langua ges.vb
Date: 2003-09-29 16:24:04 PST
Hey Peter,

Thanks for the links but these explain more on shared resources. Not really having issues with multi-threading as is. More interested on making my
thread reentrant. Tried even overriding marshalling but nothing doing. Super simple to thread in .NET but man is it tough to re-enter a thread. I know it can be done with a Form/Component with the BeginInvoke. Tried that with
delegates but it doesn't do it. Did learn that if you try enough Async
delegate invokation that sooner or later the delegate call will be made on a different thread also. Also found that you can make recursive
delegates....no t recommended though

Whatever approach I take, I can not get the call to reenter my initial
thread. I'm doing this with C++ and an ATL component but I would rather a
complete VB.NET solution.

Things I've tried so far:

1. Delegates
2. Shared Resources
3. Inheriting the RealProxy and Implementing the IRemotingTypeIn fo to try
and create a Single Threaded object using MarshalByRefObj ect.
4. ContextBoundObj ect
5. Sacrificing a small animal

Best results so far have been with #5

I've pretty much just gone with my C++ workaround but plan on working on it more on my free time. It just seems like something that shouldn't be that
difficult!

Any ideas on what else I should try...Would love to know what the
Form/Component.Begin Invoke does to reenter it's thread

Thanks,

Lior

I'm using async delegate calls. I would like to re-enter my initial thread
after the callback. (I'm not using UI controls, so Control.Invoke is not the solution.) How can I manually implement behavior like Control.Invoke? How
can I re-enter my initial thread? Any suggestions?
Thanks!
Mountain

Cannondale Jekyll with Lefty fork.
http://www.cannondale.com/bikes/media/jekyll/
"Miha Markic" <miha at rthand com> wrote in message
news:eC******** ******@TK2MSFTN GP12.phx.gbl...

BTW, what kind of mounting bike do you have?
--

I'm using async delegate calls. I would like to re-enter my initial thread
after the callback. (I'm not using UI controls, so Control.Invoke is not the solution.) How can I manually implement behavior like Control.Invoke? How
can I re-enter my initial thread? Any suggestions?
Thanks!
Mountain

I already searched Google Groups and found something on this topic, but no
solution:
http://groups.google.com/groups?hl=e...TNGP12.phx.gbl
Here's the most relevant prior post I found (again, no solution):
From: Lior Amar (li*******@hotm ail.com)
Subject: Re: Threads and Delegates
View: Complete Thread (18 articles)
Original Format
Newsgroups: microsoft.publi c.dotnet.langua ges.vb
Date: 2003-09-29 16:24:04 PST
Hey Peter,

Thanks for the links but these explain more on shared resources. Not really having issues with multi-threading as is. More interested on making my
thread reentrant. Tried even overriding marshalling but nothing doing. Super simple to thread in .NET but man is it tough to re-enter a thread. I know it can be done with a Form/Component with the BeginInvoke. Tried that with
delegates but it doesn't do it. Did learn that if you try enough Async
delegate invokation that sooner or later the delegate call will be made on a different thread also. Also found that you can make recursive
delegates....no t recommended though

Whatever approach I take, I can not get the call to reenter my initial
thread. I'm doing this with C++ and an ATL component but I would rather a
complete VB.NET solution.

Things I've tried so far:

1. Delegates
2. Shared Resources
3. Inheriting the RealProxy and Implementing the IRemotingTypeIn fo to try
and create a Single Threaded object using MarshalByRefObj ect.
4. ContextBoundObj ect
5. Sacrificing a small animal

Best results so far have been with #5

I've pretty much just gone with my C++ workaround but plan on working on it more on my free time. It just seems like something that shouldn't be that
difficult!

Any ideas on what else I should try...Would love to know what the
Form/Component.Begin Invoke does to reenter it's thread

Thanks,

Lior

Ooooooooohhhh.
Lucky you :-)

--
Miha Markic - RightHand .NET consulting & development
miha at rthand com
www.rhand.com

"Mountain Bikn' Guy" <vc@attbi.com > wrote in message
news:sjjHb.1508 47$8y1.441143@a ttbi_s52...

Cannondale Jekyll with Lefty fork.
http://www.cannondale.com/bikes/media/jekyll/
"Miha Markic" <miha at rthand com> wrote in message
news:eC******** ******@TK2MSFTN GP12.phx.gbl...

BTW, what kind of mounting bike do you have?
--

Not sure if this is what your looking for (You could be looking for
something else). but:

I am using events to communicate between threads. I have a communications
class that is polling on a back ground thread. In the Commucations class I declaire something like:

Public Event Update_Status(B yVal Message_String As String)
In the Main module, i declaire something like:

AddHandler ClientComm.Upda te_Status, AddressOf Update_Status

Is this what your looking for? In the Comm module I just invoke the
Update_Status method to communicate to the main module that something
happened.

g.

"Mountain Bikn' Guy" <vc@attbi.com > wrote in message
news:BiiHb.5495 2$VB2.96149@att bi_s51...

I'm using async delegate calls. I would like to re-enter my initial thread after the callback. (I'm not using UI controls, so Control.Invoke is not

the

solution.) How can I manually implement behavior like Control.Invoke? How can I re-enter my initial thread? Any suggestions?
Thanks!
Mountain

I already searched Google Groups and found something on this topic, but no solution:

"Mountain Bikn' Guy" <vc@attbi.com > wrote in message
news:BiiHb.5495 2$VB2.96149@att bi_s51...

I'm using async delegate calls. I would like to re-enter my initial thread after the callback. (I'm not using UI controls, so Control.Invoke is not the

solution.) How can I manually implement behavior like Control.Invoke? How can I re-enter my initial thread? Any suggestions?
Thanks!
Mountain

First off your main thread will have to be waiting. The delegate callback
will happen on a background thread. From the callback function you must
signal your main thread somehow, and probably pass it some data.

For instance you could use a Queue. Have your main thread lock the queue,
see if there is anyting on the queue (the callback may already be done!),
and then wait on its monitor. When the callback happens the delegate
function locks the queue, enqueues the state object and pulses the queue's
monitor, releasing the main thread. The main thread then deQueues the

state object and processes it.

I bet there's a slicker way to do it somehow, but using basic thread
syncronization mechanisms is good practice.

David

Do you ride? What kind of bike?

"Miha Markic" <miha at rthand com> wrote in message
news:O3******** ******@tk2msftn gp13.phx.gbl...

Ooooooooohhhh.
Lucky you :-)

--
Miha Markic - RightHand .NET consulting & development
miha at rthand com
www.rhand.com

"Mountain Bikn' Guy" <vc@attbi.com > wrote in message
news:sjjHb.1508 47$8y1.441143@a ttbi_s52...

Cannondale Jekyll with Lefty fork.
http://www.cannondale.com/bikes/media/jekyll/
"Miha Markic" <miha at rthand com> wrote in message
news:eC******** ******@TK2MSFTN GP12.phx.gbl...
> BTW, what kind of mounting bike do you have?
> --