Hawtdispatch is a small thread pooling and nio handling framework api modeled after the libdispatch api. libdispatch is the api that apple created to power the grand central dispatch (gcd) technology in os x. it allows one to more easily develop multi-threaded applications which can more easily scale to take advantage of all the processing cores on a machine. at the same time, it's development model simplifies solving many of the problems that plague multi-threaded nio development.