Re: dynamically allocating chunks from shared memory

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Markus Wanner <markus(at)bluegap(dot)ch>
Cc: PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: dynamically allocating chunks from shared memory
Date: 2010-07-20 19:05:11
Message-ID: 1279652545-sup-5894@alvh.no-ip.org
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Excerpts from Markus Wanner's message of mar jul 20 14:36:55 -0400 2010:

> > I'm also unconvinced that spinlocks are the best locking primitive here.
> > Why not lwlocks?
>
> It's derived from a completely lock-free algorithm, as proposed by Maged
> M. Michael in: Scalable Lock-Free Dynamic Memory Allocator.

Hmm, deriving code from a paper published by IBM sounds like bad news --
who knows what patents they hold on the techniques there?

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