Re: Dll - Thread Questions

From:

"Doug Harrison [MVP]" <dsh@mvps.org>

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 08 Sep 2007 12:19:52 -0500

Message-ID:

<32l5e3h7ukdf9ctaa9o8gji1knb7a2nk73@4ax.com>

On Sat, 8 Sep 2007 12:38:31 +0200, "Gino" <gino@mandi.co.il> wrote:

I have some few basic questions-
1. Is there any api that indicates the relation between some code that is
executed and the thread context in which its really belongs?

I'm not sure what you mean by "really belongs", but see GetThreadContext.

2. I have an MFC application and an MFC regular dll that exports it
functions. The main thread of the application calls some exported function
in the dll. The "theApp" object is used inside it, by means of using its
class functions.
How do I use the dll class functions from another thread? Should I
instantiate another object like "theApp2"?

No, that's not going to help anything. DLL functions that use theApp will
continue to do so, and DLL functions that call AfxGetApp will continue to
retrieve theApp.

3. Can I use global critical section objects to synchronize between the
threads?

Yes.

4. The main thread should wait for some event in the working thread. What is
the best eay to so? I waited in a simple while loop and it seems to block
the whole process though it shold block only its own thread...

It sounds like you should read this whole article, but Q5-Q7 answer that
specific question:

http://members.cox.net/doug_web/threads.htm

--
Doug Harrison
Visual C++ MVP