\li The Dispatcher registeres all callbacks as tasks with the runner
(senf::scheduler::FIFORunner).
- \li The senf::scheduler::FdManager uses senf::scheduler::Poller to access the low-level epoll()
+ \li The senf::scheduler::FdManager uses senf::scheduler::detail::Poller to access the low-level epoll()
API.
All these classes are \e not singletons. They are all instantiatied by the senf::Scheduler