Re: [Boost-users] Re: Re: Re: Q: Stopping threads (Win32)or...themysterious case of the thread with split personality

6 Dec 2004

      Dan Dimerman wrote:
...
"Ben Hutchings"  wrote in message 
news:41B47000.1030500@businesswebsoftware.com...
...
That still won't solve your problem, in general.  Multithreading is an / 
... /
You should protect all access to the controlling flag with a mutex.  In 
this case it would probably be sufficient to use the "volatile" qualifier 
on the controlling member, but this is not generally a good solution.
Ben.
In this case, I think the problem was that by {mis,ab,}using the boost 
thread lib, I passed a copy of
the functor that would be the worker thread instead of just a reference to 
it, hence the duplicity.
Protecting that variable with a mutex wouldn't have had any effect, since 
there would have been two copies still.
I realise that, but I think eliminating the copy only solves half the 
problem.

Ben.