22 lines
1.1 KiB
Text
22 lines
1.1 KiB
Text
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This module implements asynchronous I/O using whatever means your
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operating system supports.
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Asynchronous means that operations that can normally block your
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program (e.g. reading from disk) will be done asynchronously: the
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operation will still block, but you can do something else in the
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meantime. This is extremely useful for programs that need to stay
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interactive even when doing heavy I/O (GUI programs, high performance
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network servers etc.), but can also be used to easily do operations in
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parallel that are normally done sequentially, e.g. stat'ing many files,
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which is much faster on a RAID volume or over NFS when you do a number
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of stat operations concurrently.
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While most of this works on all types of file descriptors (for example
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sockets), using these functions on file descriptors that support
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nonblocking operation (again, sockets, pipes etc.) is very inefficient
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or might not work (aio_read fails on sockets/pipes/fifos). Use an
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event loop for that (such as the Event module): IO::AIO will naturally
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fit into such an event loop itself.
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WWW: http://search.cpan.org/dist/IO-AIO/
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