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Subjectasynchronous raw io
Hi All!

I am serching for an mechanism which does the following:

visiblity control:
Where a hardware buffer has to be visible to the user space.
I believe I can use mmap.

async notification:
As soon as the hardware buffer completion is done. It has to be
signalled/callbacked to the user-space, and the corresponding handler
to the signal runs.

Can any one point out the source/docs for such a mechanism.

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