[boost] Re: no semaphores in boost::thread

From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2003-06-07 10:05:24

Stefan Seefeld wrote:
[...]
> >>And then there is the other semaphore I use to count the free slots,
> >>which you didn't comment on, probably because it didn't fit into your
> >>arguments...
> >
> >
> > No, actually, it strengthens the argument, because you now have even more
> > state that needs to be synchronized to ensure against race conditions.
> 
> I don't understand this. The state in question is the difference between
> the capacity of the queue and its current length. The only variable holding
> this state is the semaphore ('my_free' in my code snippet). What do I need
> to synchronize here ?

Hi again, Stefan. ;-)

http://google.com/groups?selm=3C3ACEB1.94085050%40web.de
(Subject: Re: Example C++ pthreads producers consumers project)

regards,
alexander.

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(Subject: std0X::expected_exception<T>())