Horton

Re: small parallel restore optimization

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andrew Dunstan <andrew@dunslane.net>
Cc: Alvaro Herrera <alvherre@commandprompt.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2009-03-09T02:14:32Z
Lists: pgsql-hackers 
Andrew Dunstan <andrew@dunslane.net> writes:
> Alvaro Herrera wrote:
>> Could you use a different static PQExpBuffer on each thread?
>> pthread_getspecific sort of thing, only to be used on Windows.

> For MSVC we could declare it with "_declspec(thread)" and it would be 
> allocated in thread-local storage, but it looks like this isn't 
> supported on Mingw.

Some googling suggests that thread-local storage is supported on latest
release (not clear if it's exactly the same syntax though :-().

Worst case, we could say that parallel restore isn't supported on
mingw.  I'm not entirely sure why we bother with that platform at all...

			regards, tom lane