Re: Thread mysteriously terminates.

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From: Jerry III (jerryiii_at_hotmail.com)
Date: 02/27/04 

Date: Thu, 26 Feb 2004 21:42:08 -0800

You need to synchronize the queue access. Queue class is not thread safe on
its own. It's simple as that.

Jerry

"Sean Wolfe" <noemail@please.com> wrote in message
news:403EB21E.7000208@please.com...
> Some additional data on this issue. When the application that is feeding
> into the "aggregator" class is throttled to about 1/4 of the load i
> described, the issue doesn't happen, or happens less. It also seems to
> happen on multi-proc HT emabled machines, and not single proc(I haven't
> seen it at least). I haven't tried it on Multi-Proc NonHT machines or
> Single Proc HT machines. That's my next step though.
>
> I looked that the thread in systernals.com Process Explorer, and it
> looks like the Thread somehow gets dereferenced under those higher
> loads. When it looses the thread, the thread still appears in the list
> of handles, but only has one reference. Most .NET threads has 3-4
> references if not more. If i select properties for the Process, and then
> view the Threads tab, the thread is no longer in the list (it does
> appear when the thread is operating properly). So it would seem that the
> thread has terminated or lost it's reference, but it's handle hasn't
> been released. Did the GC maybe mistakenly collect this thread? that
> would seem unusual since I'd see this thread object to appear as a Root
> node in the GC Heap.
>
> Also to note, I do have a method attached to the AppDomain's
> UnhandledException event. So if there were any excpetions that slipped
> through my class this should be able to catch it.
>
> I also had put a Debug message just outside of the main while
> threadloop, in case for some reason it had been able to exit out of
> there for some reason. That expression is never called, so I know it's
> not that the thread is somehow getting out of the loop.
>
> This one is a puzzler!
>
> Sean