Subject: Re: "fast" syscalls?
To: Jason Thorpe <firstname.lastname@example.org>
From: Garrett D'Amore <email@example.com>
Date: 03/17/2006 13:46:31
Jason Thorpe wrote:
> On Mar 17, 2006, at 1:02 PM, Garrett D'Amore wrote:
>> No. Application starts thread, which issues ioctl that never returns.
>> The ioctl code causes the thread to call tsleep when no data in the
>> Then I can "kick" that thread after adding stuff to the queue by calling
> ...which is still a full-expense system call. I would like to have
> the details of this hidden in some userland API, too... in particular,
> I don't think the pthread -> LWP binding is generally public data.
That was a concern of mine as well. And I agree that the implementation
details should be locked away in a library.
For now I might just do heavy weight system calls and see how it performs.
Garrett D'Amore, Principal Software Engineer
Tadpole Computer / Computing Technologies Division,
General Dynamics C4 Systems
Phone: 951 325-2134 Fax: 951 325-2191