Re: [boost] [Interprocess::Semaphore] Deadlock on more producers - one consumer problem

Subject: Re: [boost] [Interprocess::Semaphore] Deadlock on more producers - one consumer problem
From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2009-06-17 14:11:30

Cosimo Calabrese wrote:
> Is there a way to unlock all the producers with the 
> boost::interprocess::semaphore? Or I have mistaken the approach of the 
> problem?

A semaphore post only increases a waiting thread if count was 0. That's 
the behaviour of a semaphore. If you want to wake up all waiters, use a 
condition variable and notify_all. Take any mutex condition variable 
tutorial for an example on multiple producers / consumers.

> Thanks to all,
> Cosimo Calabrese.

Ion