Re: [Boost-users] help with thread::interrupt

Subject: Re: [Boost-users] help with thread::interrupt
From: Rush Manbert (rush_at_[hidden])
Date: 2010-06-13 15:07:27

On Jun 13, 2010, at 11:43 AM, Conoscenza Silente wrote:

> Hi All
> I am playing with boost::thread and it is not clear how thread::interrupt actually works.
> 
> If I understood clearly the thread will be interrupted the next time it enters one of the predefined interruption points; since thread::join is one interruption point, after I call tr.interrupt() I am expected that the thread will throw a boost::thread_interrupted exception once I call tr.join() right? .
> 

I believe that if your thread had started a second thread and was waiting on thread::join() for the second level thread to finish, and if you called thread::interrupt on the first thread, then you would see the exception.

i.e.

void levelTwo (void)
{
        while (true)
        {
                ;
        }
}

void levelOne (void)
{
        try
        {
                boost::thread t2 (levelTwo);
                t2.join();
        }
        catch (const boost::thread_interrupted& ex )
        {
                std::cout << "levelOne was interrupted" << std::endl;
        }
}

int main( int argc, char** argv ){

    boost::thread t1( levelOne );
    boost::this_thread::sleep( boost::posix_time::seconds( 3 ) );
    
    std::cout << "calisl to INTER." << std::endl; std::cout.flush();
    t1.interrupt();
}

- Rush