On Mon, 17 Dec 2001 10:20:28 -0500 (EST)
Aaron Sethman <androsyn@ratbox.org> wrote:
>
> I am attempting to make a pre-existing server use SIGIO with posix rt
> signals and I am having some difficulties with it. Mainly with
reception
> of POLLOUT. When exactly should this get sent? Should it only get sent
> when attempting to write() and getting EAGAIN, then the socket being
ready
> or?
I suppose that you must send SIGIO when data actually arives from socket.
In accordance of LDD2 write() method should look something like this:
ssize_t _write(...)
{
/* Some data defenitions */
if (dev->async_queue)
kill_fasync(&dev->async_queue, SIGIO, POLL_IN);
if (down_interruptible(&dev->sem))
return -ERESTARTSYS;
/* Work with data transaction itself */
}
>
> Thanks in advance.
>
> Regards,
>
> Aaron
---
WBR. //s0mbre
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