reactor/reactor — pull request #272 by ifesdjeen (2014-01-31 21:28:03+00:00)
Title: Implement a HashWheel timer

This commit adds a Timer interface implemented by HashWheelTimer.

HashWheelTimer itself is implemented as per the "Hashed and Hierarchical
Timing Wheels" paper: http://www.cs.columbia.edu/~nahum/w6998/papers/sosp87-timing-wheels.pdf

This implementation doesn't involve hierarchical Timing Wheels.