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Date: Wed, 29 Sep 2004 21:24:33 +0800
From: David Xu <davidxu@freebsd.org>
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To: Julian Elischer <julian@elischer.org>
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cc: Andrew Gallatin <gallatin@cs.duke.edu>
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Subject: Re: easy to reproduce unkillable threads
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Julian Elischer wrote:

>
> hmm looks like the problem is that the condition variable respods to a 
> masked signal
>
>
> the signals are all masked from the perspective of the thread..the 
> signal is delivered to the signal
> catcher thread so the UTS can handle it but in the meanwhile the 
> thread has done a RESTART..
>
> David: check out what happens when a signal is delivered to a worker 
> thread that is in a cv_wait_signal()
>
Please tell me easiest way to reproduce it, I tried best to reproduce 
it, but still got nothing.


>>
>>> .
>>>
>>
>> I haven't checked it as yet but I am starting to see some hint of 
>> some problem..
>> The fact that cv_wait_signal()  reacts to a blocked signal surproses 
>> me..
>> (according to teh man page)
>>
>> http://people.freebsd.org/~gallatin/threadlock.tgz
>>
I use this test case.