Actually, a combination of Mutex and Conditions sound like a solution. You
can wait on a condition either for a specific time, or until your thread
receives a signal. When the thread waits on the condition, the mutex is
released. When the condition expires, the mutex is automatically
reacquired. Do a man on pthread_cond_wait and pthread_mutex_lock
Cole Tuininga wrote:
> On Mon, Jul 30, 2001 at 06:36:58PM -0400, List Monkey wrote:
> >
> > Mutexes would indded be the way to go if it makes sense for your
> > achitecture.
> >
> > Another approach is to base your time on SYSTEM UPTIME. This is available
> > by writing a little hack to read the kernel global "jiffies", or read
> > /proc/uptime
>
> Hmmm ... this is an approach I hadn't thought of ... it might just work.
> Is there a portable way to get system uptime?
>
> > If the server is always online, you could just query the NIST atomic clock
>
> *chuckle* It's an idea, but I think it's a little more overhead than
> I wanted. 8)
>
> > Make a separate thread that just sleeps some small time, increments a
> > global counter atomically, ad infinitum.
>
> The problem with this approach is that if the CPU gets loaded, the
> timing starts (potentially) getting off. The more consistent the high load,
> the more askew the timing becomes.
>
> Decent approach though.
>
> --
> Give a person a fish and you feed them for a day.
> Give a person access to the net and they won't bother you for weeks.
> -- Internet proverb
>
> Cole Tuininga
> Network Admin
> Code Energy, Inc
> [EMAIL PROTECTED]
> (603) 766-2208
> PGP Key ID: 0x43E5755D
>
>
>
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--
Jerry Feldman <[EMAIL PROTECTED]>
Boston Linux and Unix user group
http://www.blu.org
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