From: Giuliano Catrambone <giuliano.catrambone@catrasoftware.it>
To: pthreads-win32@sources.redhat.com
Subject: Re: Windows process very slow using more than one condition variable
Date: Mon, 16 Oct 2006 13:16:00 -0000 [thread overview]
Message-ID: <453386EF.90503@catrasoftware.it> (raw)
In-Reply-To: <452FFFF7.20005@catrasoftware.it>
Hi all,
I investigated more the problem and it looks that the
pthread_cond_timedwait never respect
the timeout I gave as input. I observed that also the Sleep Windows
API never respect
his arguments in millisecs.
Do you know which could be the problem?
Thanks
giu
Giuliano Catrambone wrote:
> Hello guys
> I have a program which is portable on windows and Linux and I'm
> using pthread-win32
> for the Windows version.
>
> In my scenario I have one events queue and many threads acceding to
> this queue
> to get events (consumers) and to add events (producers).
>
> Every event has, as property, the consumer thread type addressee
> which has to get the event.
>
> In my implementation I use as many condition variables as the
> number of different cunsumer types.
>
> In this way, every time an event for the consumer X is added into
> the queue, a pthread_cond_signal
> is called on the condition variable where only the consumer X is in
> timedwait.
>
> If I have only one consumer type, and then one condition variable,
> the process on Windows is very fast
> and works fine.
> If I have more than one consumer types, and then more than one
> condition variables, the process on Windows
> is very slow.
> BTW, the same code, on linux, works fine also with many consumer
> types threads and then many condition variables.
>
> Do you have some ideas why Windows seems works very slow using more
> than one condition variables?
> Thanks
> giu
>
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prev parent reply other threads:[~2006-10-16 13:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 21:03 Giuliano Catrambone
2006-10-16 13:16 ` Giuliano Catrambone [this message]
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