Re: [Boost-users] "Simple" graceful stop of boost thread

Subject: Re: [Boost-users] "Simple" graceful stop of boost thread
From: Gábor Márton (martongabesz_at_[hidden])
Date: 2013-04-11 04:00:48

Hi,

If you want a thread to be stopped gracefully, I think the best way is
to use boost thread's interruption :
http://www.boost.org/doc/libs/1_53_0/doc/html/thread/thread_management.html#thread.thread_management.tutorial.interruption

You can specify interruption points in the stoppable thread by
boost::this_thread::interruption_point(), and there are several
predefined interruption points like sleep
(http://www.boost.org/doc/libs/1_53_0/doc/html/thread/thread_management.html#interruption_points).

"A running thread can be interrupted by invoking the interrupt()
member function of the corresponding boost::thread object. When the
interrupted thread next executes one of the specified interruption
points (or if it is currently blocked whilst executing one) with
interruption enabled, then a boost::thread_interrupted exception will
be thrown in the interrupted thread."

HTH,
Gabor

On Thu, Apr 11, 2013 at 1:00 AM, Michael Powell <mwpowellhtx_at_[hidden]> wrote:
> Hello,
>
> I know this is possible, just don't have all the templates at the ready.
> Graceful way of stopping a boost worker thread from running.
>
> I am familiar with C# .NET threading, I can fairly simply signal an
> AutoResetEvent, for instance, and wait a nominal period for it to be set.
>
> Afterwards, this tells the thread to stop what it's doing at an opportune
> moment. Meanwhile the parent thread is joining the worker thread(s) back up.
>
> Something like that. I just need a few tips what concept to link up: i.e.
> mutex? shared_mutex? lock? shared_lock?
>
> I'll have a start_work, stop_work, and working type motif going on. I call
> start_work to start the working thread going. Simple enough. I will call
> stop_work to signal the worker thread(s) to stop and join up with the worker
> threads.
>
> Somewhere in between the worker thread is polling the lock does it need to
> stop, do it's work, then back around again. And so on...
>
> Thank you...
>
> Regards,
>
> Michael Powell
>
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