Go Premium for a chance to win a PS4. Enter to Win

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 196
  • Last Modified:

terminate all child threads

I have this program that creates many threads that updates a screen with data .When i stop the program to clear the screen it crashes.So can anyone tell me how to stop all other threads without closing the main window(gui).I want to close all threads and leave the screen as it is,

Thanks.
0
rc3000
Asked:
rc3000
  • 4
1 Solution
 
GloomyFriarCommented:
I can't understand what you mean.
But you can "close thread" by calling TerminateThread.
0
 
GloomyFriarCommented:
But keep in mind that:

TerminateThread is used to cause a thread to exit. When this occurs, the target thread has no chance to execute any user-mode code and its initial stack is not deallocated. DLLs attached to the thread are not notified that the thread is terminating.

TerminateThread is a dangerous function that should only be used in the most extreme cases. You should call TerminateThread only if you know exactly what the target thread is doing, and you control all of the code that the target thread could possibly be running at the time of the termination. For example, TerminateThread can result in the following problems:

If the target thread owns a critical section, the critical section will not be released.
If the target thread is allocating memory from the heap, the heap lock will not be released.
If the target thread is executing certain kernel32 calls when it is terminated, the kernel32 state for the thread's process could be inconsistent.
If the target thread is manipulating the global state of a shared DLL, the state of the DLL could be destroyed, affecting other users of the DLL.
0
 
GloomyFriarCommented:
So the proper way is to "say" the thread, that it must stop by setting a variable or an event.
The thread have to check the variable or event in it's execution loop.
0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 
rc3000Author Commented:
hi gloomy ,
   your answer is also gloomy for me.Because if i use terminatethread then the window closes and some other threads continue to run.If i use Exitprocess(0) then it exits gracefully but the window closes .I want the window the main window to remain open while all  the background processing comes to a stop.I hope this clarifies things.I am increasing the number of points by 100.
0
 
SteHCommented:
The example on
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcsample/html/_sample_mfc_MTGDI.asp
should be very helpful for your purpose. There several (hundred) threads can be started and stopped without affecting the main program.
0
 
GloomyFriarCommented:
I still don't understand what all this about.
Let's go step-by-step.
How do you create the threads and what the thread have to do?
0

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now