Proposal for adding O_DIRECT support into JDK 9 (original) (raw)

Alan Bateman Alan.Bateman at oracle.com
Sun Nov 6 17:04:22 UTC 2016

On 06/11/2016 15:51, Lu, Yingqi wrote:

Another approach might be use ioctl to get the block size and use that as the alignment value. I think ioctl is available on UNIX based OSes (please chime in if I miss any OS here) and has a similar call for Windows named DeviceIoControl. The request code of ioctl is different from OS to OS, but we could address that in the native code.

A possible approach (I think I mentioned this in one of the early mails) is to have FileStore expose the block size that can be use to align and size the buffer.

-Alan

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