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Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c) - Mailing list pgsql-hackers

From Larry Rosenman
Subject Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)
Date
Msg-id 20001116140403.A6802@lerami.lerctr.org
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In response to Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)  (Larry Rosenman <ler@lerctr.org>)
Responses Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)  (Alfred Perlstein <bright@wintelcom.net>)
Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)  (Bruce Momjian <pgman@candle.pha.pa.us>)
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* Bruce Momjian <pgman@candle.pha.pa.us> [001116 14:02]:
> > > This sounds like an interesting approach, yes.
> > Question: Is sleep(0) guaranteed to at least give up control? 
> > 
> > The way I read my UnixWare 7's man page, it might not, since alarm(0)
> > just cancels the alarm...
> 
> Well, it certainly is a kernel call, and most OS's re-evaluate on kernel
> call return.
BUT, do we know for sure that sleep(0) is not optimized in the library
to just return? 
-- 
Larry Rosenman                      http://www.lerctr.org/~ler
Phone: +1 972-414-9812 (voice) Internet: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749

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