/h1. A non blocking hashmap. A fully thread safe map structure, mapping keys onto values. It does not make use of locks or other blocking structures, and should perform very well under high concurrency. Inspired by Cliff Clicks Java version. /author: Onne Gorter <onne@onnlucky.com> /version: 2010-04-14 /depends: libatomic-ops /license: MIT; see license.txt