?
Solved

When MFC application terminates

Posted on 2003-11-26
4
Medium Priority
?
437 Views
Last Modified: 2013-11-20
I call PostQuitMessage to main UI thread of MFC, I have other threads in the app.
Will MFC app terminate or it will wait until all threads terminate ?
0
Comment
Question by:amakalski
  • 3
4 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 9826974
All threads will be terminated. However, good programming style requires to stop all worker threads before exit. Every worker thread should have stop event associated with it. When main thread needs to stop the worker thread, it executes the following code:

SetEvent(hStopEvent);   // ask thread to exit
WaitForSingleObject(hThread, INFINITE);  // wait when thread really exits

Thread function should check stop event periodically:

while (...)   // some loop
{
    // do something

    if ( WaitForSingleObject(hStopEvent, 0) == WAIT_OBJECT_0 )  // stopped ?
        break;
}

// clean-up and return

0
 

Author Comment

by:amakalski
ID: 9827037
AlexFM,
Do you say that after posting QUIT msg to main UI thread, app will be terminated and other threads will be killed? Is that right?
0
 
LVL 48

Accepted Solution

by:
AlexFM earned 375 total points
ID: 9827048
Yes.
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 9830038
I apologize for providing wrong information. PostQuitMessage doesn't terminate all threads in process. It terminates only UI thread to which it posted. ExitProcess and TerminateProcess functions terminate process and all it's threads.
In any case, all worker threads should be stopped before exit using the way shown in my first post.
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
Ready to get certified? Check out some courses that help you prepare for third-party exams.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Whether it be Exchange Server Crash Issues, Dirty Shutdown Errors or Failed to mount error, Stellar Phoenix Mailbox Exchange Recovery has always got your back. With the help of its easy to understand user interface and 3 simple steps recovery proced…
Suggested Courses
Course of the Month13 days, 8 hours left to enroll

750 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question