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Article #8740

Re: Thread WaitFor() ....waits forever

#8740
From: Daniel Stevenson
Date: Wed, 22 Sep 2004 06:58
42 lines
2288 bytes
I'm not sure if this is meant to be working but if I comment out the
WaitForSingleObject(hThread, INFINITE) then it seams to work

I thought i had tried this previously and was causing a AV.

is this because the Thread is terminating prior to the
WaitForSingleObject(hThread, INFINITE) is executed?


"Daniel Stevenson" <d.stevenson@ocreage.com.au> wrote in message
news:415120dc@newsgroups.borland.com...
>
> >
> > You are mis-using the thread pointer.  See below.
> >
> > >     delete MyForm1;
> > >     MyForm1 = NULL;
> >
> > You should never call 'delete' on a thread that has its FreeOnTerminate
> > property set to true.
>
> I don't actually use delete when terminating my thread.  The above delete
is
> deleting my form after the thread is supposed to be terminated.
>
> >
> > That is because you are deadlocking the code.  WaitForSingleObject() is
> > waiting for the thread to terminate, but the thread is waiting for the
> main
> > thread to process the Synchronize() requests so that it can then
continue
> on
> > and eventually detect that it needs to terminate itself.
> >
>
> I sort of understand what you are implying but I'm not sure how to stop my
> thread from being deadlocked.  As far as I know, the Synchronize function
is
> fairly straight forward and should be able to be completed.
>
>
>
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From: "Daniel Stevenson" <d.stevenson@ocreage.com.au>
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Subject: Re: Thread WaitFor() ....waits forever
Date: Wed, 22 Sep 2004 16:58:51 +1000
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