Re: [boost] [thread] thread interruption semantics

From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2007-11-15 10:24:58

Howard Hinnant wrote:
> 
> On Nov 15, 2007, at 7:02 AM, Alexander Terekhov wrote:
> 
> >> http://svn.boost.org/svn/boost/trunk/boost/thread/pthread/condition_variable.hpp
> >
> > That condition_variable_any wrapper doesn't ensure same destruction
> > safety of condition varaible as POSIX pthread_cond_t. That's not good.
> 
> Thanks for this observation Alexander.  Do you have a recommendation
> for fixing it?  The best I'm coming up with at the moment is to keep a
> count of waiters as member data and have ~condition_variable_any()
> wait until the count drops to zero.

Or simply use shared_ptr<pthread_mutex_t> for internal_mutex. Peter 
will like that. :-)

BTW, condition_variable_any's (timed_}wait() above doesn't seem to 
m.lock() in the case of threads cancel (interruption). That doesn't 
match POSIX (and condition_variable thin wrapper) behavior.

regards,
alexander.