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Re: [gpsd-dev] Updated docs on NTP segment management
From: |
Eric S. Raymond |
Subject: |
Re: [gpsd-dev] Updated docs on NTP segment management |
Date: |
Wed, 18 Feb 2015 23:25:42 -0500 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Harlan Stenn <address@hidden>:
> http://clang.llvm.org/docs/LanguageExtensions.html has some info about
> clang and memory barrier intrinsics, but they seem to be for ARM only.
>
> I'd hope that somebody has written a library of these things for
> different compilers (including AIX, Solaris, and some other platforms).
>
> I haven't looked in to this stuff much though.
>
> I'm game to have a libntpshm/ tear-off (unless there's a better name for
> it) that we could use for all of this, that would be shared between at
> least NTP and GPSD. I know some other folks use this code as well, but
> they are not real loud about it.
If read/write access is a concern it's probaby time to look beyond
shared segments with roll-your-own locking to something like POSIX
message queues.
I could design and implement a facility like that, given a reasonably
well-thought-out set of requirements. It's the kind of thing I'm good
at.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
- Re: [gpsd-dev] Updated docs on NTP segment management, (continued)
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/17
- Re: [gpsd-dev] Updated docs on NTP segment management, Hal Murray, 2015/02/17
- Re: [gpsd-dev] Updated docs on NTP segment management, Harlan Stenn, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Hal Murray, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Eric S. Raymond, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Eric S. Raymond, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Eric S. Raymond, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management, Harlan Stenn, 2015/02/18
- Re: [gpsd-dev] Updated docs on NTP segment management,
Eric S. Raymond <=
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/19
- Re: [gpsd-dev] Updated docs on NTP segment management, Eric S. Raymond, 2015/02/19
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/20
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/20
- Re: [gpsd-dev] Updated docs on NTP segment management, Harlan Stenn, 2015/02/20
- Re: [gpsd-dev] Updated docs on NTP segment management, Harlan Stenn, 2015/02/20
- Re: [gpsd-dev] Updated docs on NTP segment management, Miroslav Lichvar, 2015/02/23
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/23
- Re: [gpsd-dev] Updated docs on NTP segment management, Harlan Stenn, 2015/02/23
- Re: [gpsd-dev] Updated docs on NTP segment management, Gary E. Miller, 2015/02/23