Re: Recovery control functions

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Recovery control functions
Date: 2011-01-14 12:01:07
Message-ID: 1295006467.12442.60.camel@ebony
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On Fri, 2011-01-14 at 13:47 +0200, Heikki Linnakangas wrote:
> On 14.01.2011 13:15, Simon Riggs wrote:
> > /*
> > + * Recheck shared recoveryPause by polling.
> > + *
> > + * XXX It might seem we should do this via a shared Latch, but
> > + * currently we only support one shared latch per process and
> > + * that is already taken for Startup process. Polling is used
> > + * in other places in xlog.c already, so not a concern.
> > + */
>
> There is no such limitation with latches.

SIGUSR1 handler can only handle one shared latch

--
Simon Riggs http://www.2ndQuadrant.com/books/
PostgreSQL Development, 24x7 Support, Training and Services

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