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RE: Good Algorithm for "Multiple Readers"/"Multiple Writers"
- From: "Evstiounin, Mikhail" <Mikhail dot Evstiounin at ca dot com>
- To: "Stephen Croall" <scroall at tibco dot com>, <RKindred at SwRI dot edu>, <pthreads-win32 at sources dot redhat dot com>
- Date: Thu, 8 Dec 2005 10:02:38 -0500
- Subject: RE: Good Algorithm for "Multiple Readers"/"Multiple Writers"
Frankly, how do you think it is possible to be able to write to resource
in parallel and keep integrity of this resource all the time? There is a
reason why writer gains an exclusive lock on a resource.
-----Original Message-----
From: pthreads-win32-owner@sourceware.org
[mailto:pthreads-win32-owner@sourceware.org] On Behalf Of Stephen Croall
Sent: Thursday, December 08, 2005 9:49 AM
To: RKindred@SwRI.edu; pthreads-win32@sources.redhat.com
Subject: RE: Good Algorithm for "Multiple Readers"/"Multiple Writers"
But that is for "single writer"/"multiple readers" - it doesn't support
multiple writers.
Steve.
--
J. Senior Software Engineer, Tibco Software Ltd.
T. +44 (0) 1792 360773
M. +44 (0) 7788 971394
E. scroall@tibco.com
W. www.tibco.com
-----Original Message-----
From: Robert Kindred [mailto:RKindred@SwRI.edu]
Sent: 08 December 2005 14:47
To: Stephen Croall; pthreads-win32@sources.redhat.com
Subject: RE: Good Algorithm for "Multiple Readers"/"Multiple Writers"
I use the pthread_rwlock_t in pthreads-win32, and it works fine.
Robert Kindred
> -----Original Message-----
> From: pthreads-win32-owner@sourceware.org
> [mailto:pthreads-win32-owner@sourceware.org]On Behalf Of Stephen
Croall
> Sent: Thursday, December 08, 2005 3:10 AM
> To: pthreads-win32@sources.redhat.com
> Subject: Good Algorithm for "Multiple Readers"/"Multiple Writers"
>
>
> Hi,
>
> I'm looking for a good, performant algorithm for "multiple
> reader"/"multiple writer" locking.
>
> I'm in the process of writing my own but I would rather not fall into
> any common pitfalls, especially since performance & scalability are
> critical.
>
> Is anyone aware of whether POSIX implements this type of lock? I
can't
> seem to find any reference to it in the POSIX documentation.
>
> Cheers, Steve.
>
> --
>
> J. Senior Software Engineer, Tibco Software Ltd.
> T. +44 (0) 1792 360773
> M. +44 (0) 7788 971394
> E. scroall@tibco.com
> W. www.tibco.com
>