Re: [Boost-users] [interprocess] named_condition wait question

Subject: Re: [Boost-users] [interprocess] named_condition wait question
From: Moritz (mokoman_at_[hidden])
Date: 2009-09-11 13:10:53

My problem is that I can't kill the clients because their work() methods
run as a boost::thread and they're stuck in the wait() call. So they
don't reach this_thread::interruption_point(). That is correct behavior
because in my application they have to wait until new data has arrived.
But this prevents me from stopping them.
Currently I am looking for a proper way to interrupt the wait() call.
But if I use timed_wait() they possibly miss the notify() signal.

Can you explain your use of an error flag?

Thank you in advance.

John Dlugosz wrote:
>> The reading processes are waiting on a named_condition
>> that indicates the possibility to read. Problem is now that they wait
>> until doomsday if no one triggers notify. So they can't quit the
>> reading process themselves.
> 
> I always use a special "quit" message sent in the normal mechanism that it uses to send work.
> Also, I always advise waiting on a special "error" flag in addition to whatever you are really waiting for, when you block.  That allows exceptions to always be able to un-stick the workers.
> 
> 
> 
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