methodmissing/vio
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Vectored I/O for Ruby MRI (c) 2009 Lourens Naudé (methodmissing) http://github.com/methodmissing/vio Vectored I/O ? POSIX 1003.1-2001 introduces reading or writing data into multiple buffers with a single procedure call.See http://en.wikipedia.org/wiki/Vectored_I/O for an overview. Use cases : * Write non-sequentially placed data in memory to disk with a single write operation.This fits very well with custom database/record formats for writing out indexes and data at once. * Reducing syscall overheads * Reading structured data (protocol dumps,db records) into distinct buffers Examples : 8=FIX.4.4�9=45�35=0�49=TW�56=ISLD�34=3�52=20000426-12:05:06�10=220� >>io = File.open('/path/to/fix.txt')) => #<File://path/to/fix.txt> >>io.read(9, 5, 5, 6, 8, 26, 8) => ["8=FIX.4.4","\x019=45", "\x0135=0", "\x0149=TW", "\x0156=ISLD", "\x0134=3\x0152=20000426-12:05:06", "\x0110=220\x01"] Installation sudo gem install methodmissing-vio Todo : * Error handling for rewind + sockets don't support lseek To run the test suite: rake To run the benchmarks: rake bench
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