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Re: About my RWLock ...

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Hello,

This SpinLock that i am using will not impact the performance of
my RWLock cause to use effectivly my RWLock there must be far less a 
fewer number of writers than readers. But it will impact the performance 
of my SemaCondVar and SemaMonitor, so i will design something that look 
like an MCS queue Lock and that is
more efficient than this SpinLock with a backoff mechanism,
and as i said before we  have to spin on local variables not on shared 
variable and use a backoff mechanism this way our Lock will be
very efficient.


Thank you,
Amine Moulay Ramdane.


On 9/22/2013 11:13 PM, aminer wrote:
>
> Hello,
>
>
> If you take a look at the SpinLock that i am using
> inside my SemaMonitor, it uses a backoff mechanism to be more efficient
> but there is still a weakness with that SpinLock cause
> all the threads inside this SpinLock spin on the same shared location
> causing
> cache-coherence traffic on every successful lock access so it will slow
> globally the threads of your computer, so the idea is to use like an MCS
> queue Lock that uses
> an exponential backoff and that doesn't spin on a shared variable but
> local variables.
>
> I am not the designer of this SpinLock, this SpinLock was designed by
> other devellopers and it is not so efficient as i have just explained,
> here is the
> devellopers of this SpinLock (that i am using) called Istvan Agoston and
> Primoz Gabrijelcic :
>
> here
> http://code.google.com/p/gpdelphiunits/source/browse/trunk/src/SpinLock.pas?r=37
>
>
>
> So i will try to design something like an MCS queue lock that
> is very efficient in the near future nad that i will use inside
> my SemaCondvar and SemaMonitor.
>
>
> Thank you,
> Amine Moulay Ramdane.
>
>
>

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Thread

About my RWLock ... aminer <aminer@toto.net> - 2013-09-22 23:13 -0700
  Re: About my RWLock ... aminer <aminer@toto.net> - 2013-09-22 23:37 -0700
    Re: About my RWLock ... aminer <aminer@toto.net> - 2013-09-22 23:40 -0700
  Re: About my RWLock ... aminer <aminer@toto.net> - 2013-09-22 23:47 -0700

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