Re: poll(): IN/OUT vs {RD,WR}NORM

Mouse <[email protected]>
Newsgroups gmane.os.netbsd.devel.kernel
Message-ID <[email protected]>
>>      POLLPRI        High priority data may be read without blocking.
>>      POLLRDBAND     Priority data may be read without blocking.
>>      POLLRDNORM     Normal data may be read without blocking.

> Is this related to the "oob data" scheme in TCP (which is a hack that
> doesn't work)?

I really wish BSD hadn't tried to turn the urgent pointer into an
out-of-band data stream, because, as you say, it doesn't work for that.

It doesn't really work very well even as an API to TCP's urgent
pointer.

> Where do we attach 3 priority levels to data?

That's part of what I was wondering.

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