Solved

Pumping messages during Thread.Join(myTimeout)

Posted on 2008-10-10
1
465 Views
Last Modified: 2013-12-17
Hi everybody,

I use a thread to wait until an event occurs.
I create and lauunch the thread, than wait until the threads ends or a timeout is reached.
The problem is (I think), that during Thread.Join(myTimeout) there is no messages pumping, and so no event can be catched !
How could I pump messages ?
Or should I use anything else that Thread.Join method ?

Thank you very much,
Vincent
....
Thread WaitUntilEventThread = new Thread(new ThreadStart(WaitEventService));
WaitUntilEventThread.Start();
WaitUntilEventThread.Join(myTimeout);
}
 
private void WaitEventService()
{
     while(!isMacroComplete)
     {
          Thread.Sleep(500);
     }
}
 
private void Pathway_MacroComplete(object sender, MyLib.MyEvent eventArgs)
{
      isMacroComplete = true;   
}

Open in new window

0
Comment
Question by:vinceTrace
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 86

Accepted Solution

by:
Mike Tomlinson earned 125 total points
ID: 22688126
Right...there is no point in making a new thread if you are just going to Join() them...   =\

If you really want to force the pumping of messages then use "Application.DoEvents()".

*** BUT *** if you do this then there is really no need for the separate thread is there?

Just use a polling loop to look for the toggling of your flag:

    // some code
    while(!isMacroComplete)
     {
          Thread.Sleep(100); // use a smaller number than 500 or your UI will be sluggish!
          Application.DoEvents();
     }
     // some more code that needs to run after "isMacroComplete" toggles

If you really want to use a different thread that doesn't require DoEvents() then encapsulate the while loop in a class that raises an EVENT when the flag is toggled.  This would require a change in your code methodology though as you would be moving from linear code to event driven code.
0

Featured Post

PowerShell Core for Advanced Linux Administrators

Understand advanced principals around Powershell Core with a focus on the Linux Administrator.  This course covers how to administer numerous environments across multiple platforms including Linux, Azure, AWS, and Google Cloud from a single shell instance.

Question has a verified solution.

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

IP addresses can be stored in a database in any of several ways.  These ways may vary based on the volume of the data.  I was dealing with quite a large amount of data for user authentication purpose, and needed a way to minimize the storage.   …
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

622 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