Horton

Re: better atomics - v0.2

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Marti Raudsepp <marti@juffo.org>
Cc: Andres Freund <andres@2ndquadrant.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2014-01-21T15:20:35Z
Lists: pgsql-hackers 
On Sun, Jan 19, 2014 at 2:43 PM, Marti Raudsepp <marti@juffo.org> wrote:
> On Tue, Nov 19, 2013 at 6:38 PM, Andres Freund <andres@2ndquadrant.com> wrote:
>> The attached patches compile and make check successfully on linux x86,
>> amd64 and msvc x86 and amd64. This time and updated configure is
>> included. The majority of operations still rely on CAS emulation.
>
> Note that the atomics-generic-acc.h file has ® characters in the
> Latin-1 encoding ("Intel ® Itanium ®"). If you have to use weird
> characters, I think you should make sure they're UTF-8

I think we're better off avoiding them altogether.  What's wrong with (R)?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

  1. Avoid the use of a separate spinlock to protect a LWLock's wait queue.

  2. Improve LWLock scalability.

  3. Reduce the number of semaphores used under --disable-spinlocks.

  4. Alter the configure script to fail immediately if the C compiler does not