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thread abort

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Join Date: Feb 2008

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Nemoticchigga Nemoticchigga is offline

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thread abort

Jul 29th, 2008

I am running a thread that does something, then sleeps for a while. If the program closes it continues to sleep to completion. How do I get it to abort immediatly, even if in the middle of sleeping?

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 C++ Syntax (Toggle Plain Text) 
void commThread::ThreadEntryPoint1()
{
     while(1)
     {
                //do work
	Sleep(15000);  //15 second sleep
     }
}
void commThread::ThreadEntryPoint1()
{
     while(1)
     {
                //do work
	Sleep(15000);  //15 second sleep
     }
}

and in my mainform destructor which controls the thread:

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 C++ Syntax (Toggle Plain Text) 
		~Form1()
		{
			if (components)
			{
				delete components;
			}
 
			if(Thread1->IsAlive)
			{
                                                                //Thread1->Interrupt();
				Thread1->Abort();
			}
		}
		~Form1()
		{
			if (components)
			{
				delete components;
			}

			if(Thread1->IsAlive)
			{
                                                                //Thread1->Interrupt();
				Thread1->Abort();
			}
		}

Thanks.

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Join Date: Aug 2005

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Ancient Dragon Ancient Dragon is offline

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Still Learning

Re: thread abort

Jul 29th, 2008

Instead of Sleep() you can use WaitForSingleObjectEx(), which lets you abort the sleep early.

The most important thing in the Olympic Games is not to win but to take part, just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well.
-Pierre de Coubertin, The Olympic Creed Inspired by Bishop Ethelbert

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Join Date: Jul 2008

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Tilir

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Newbie Poster

Re: thread abort

Jul 29th, 2008

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Originally Posted by Nemoticchigga

I am running a thread that does something, then sleeps for a while. If the program closes it continues to sleep to completion. How do I get it to abort immediatly, even if in the middle of sleeping?

You may use TerminateThread function, it will terminate your thread immediatly, but it is bad practice. Right decision is to follow Ancient Dragon's recomendation and use some of synchronization objects instead -- for example event. Thread may sleep, waiting some event to be signaled, then awake and abort himself with proper resource cleanup, etc...

Tilir
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