Re: aio_read/write versus O_NONBLOCK

In article
<fe463120-697d-4100-9ca8-b74083491664@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
RazvanD <razvand@xxxxxxxxx> wrote:

Hi!

Could someone point me to some articles or give me some hints on the
advantages/disadvantages of asynchronous operations on files (aio_read/
aio_read) versus normal operations (read/write) used with O_NONBLOCK
when opening a file.

aio_read/aio_write are indeed more flexible. But, at least on Linux/
glibc, they are implemented using POSIX threads. Wouldn't a carefully
designed program using O_NONBLOCK for files best a program using
aio_read/aio_write? I think my question should be: are asynchronous I/
O operations only more flexible or are they also faster?

I'm not certain about Linux, but on many systems O_NONBLOCK has no
effect on ordinary file streams.

--
Barry Margolin, barmar@xxxxxxxxxxxx
Arlington, MA
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