[Boost-users] question about interprocess_condition::timed_wait

I'm trying to use interprocess_condition::timed_wait without success. I never get the timeout in my code. I think I don't understand at all how posix_time works. My code is the following: ptime t = boost::posix_time::microsec_clock::local_time(); ptime timeout = t + milliseconds(1000); scoped_lock<interprocess_mutex> lock(InterprocessMutex, timeout); if (get_shared_data(lock).m_message) if (!InterprocessCondition.timed_wait(lock, timeout)) { // handle timeout } Is that ok? Thanks.