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[20070504] Asynchronous I/O in NetBSD
A few days ago, Mindaugas Rasiukevicius committed support for Asynchronous I/O to NetBSD, a way to initiate input/output operations and have the system return before they have ended (== running them asynchronous). When I/O is actually done, the initiating process is usually notified via a signal. See aio.h, aio_read(), aio_write() and friends in the Single Unix Specification.

Mindaugas also has a page with details of NetBSD's implementation of Asynchronous I/O.

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