Note that what you're referring to as "readiness-based I/O" is not asynchronous I/O in the strictiest sense--it's actually non-blocking, synchronous I/O. I fin

Note that what you're referring to as "readiness-based I/O" is not asynchronous I/O in the strictiest sense--it's actually non-blocking, synchronous I/O. I find this article helpful in clearing up confusion of asynchronous vs non-blocking I/O: http://blog.omega-prime.co.uk/?p=155 http://blog.omega-prime.co.uk/?p=155