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pgsql: Tweak order of operations in BitmapHeapNext() to avoid the case

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Tweak order of operations in BitmapHeapNext() to avoid the case
Date: 2009-01-12 16:00:41
Message-ID: 20090112160041.DBA70754877@cvs.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committerspgsql-hackers
Log Message:
-----------
Tweak order of operations in BitmapHeapNext() to avoid the case of prefetching
the same page we are nanoseconds away from reading for real.  There should be
something left to do on the current page before we consider issuing a prefetch.

Modified Files:
--------------
    pgsql/src/backend/executor:
        nodeBitmapHeapscan.c (r1.33 -> r1.34)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapHeapscan.c?r1=1.33&r2=1.34)

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