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Re: dynamically allocating chunks from shared memory

Alvaro Herrera <alvherre@commandprompt.com>

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From: Alvaro Herrera <alvherre@commandprompt.com>
To: Markus Wanner <markus@bluegap.ch>
Cc: PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>
Date: 2010-07-20T19:05:11Z
Lists: pgsql-hackers 
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?