> > In glibc
>
> So is there no advantage of having something like that in the kernel, to
> allow a program to queue up many buffers for the network code to handle
> as it can, rather than either blocking on a send() or repeatedly making
> kernel calls on a nonblocking socket until it manages to send all its
> data?
You can do that with a thread from user space. In fact a lot of systems do
most of their AIO via threads in user space.
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