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Async I/O

Async I/O

Posted Nov 25, 2010 17:39 UTC (Thu) by kleptog (subscriber, #1183)
In reply to: Async I/O by neilbrown
Parent article: Ghosts of Unix past, part 4: High-maintenance designs

Thanks a lot for that explanation, I see the difficulties now.

State machines are nice and efficient, but hard to understand and program. What are probably the most common large state machines, parsers, are often generated by other programs (flex & bison) from a higher level description, whose output no human can understand directly.

I don't think anyone has yet defined a language for filesystems that could be used to generate an appropriate state machine, perhaps the state of the art just isn't there yet.

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