Skip site navigation (1) Skip section navigation (2)

pgsql: Pull up isReset flag from AllocSetContext to MemoryContextstruc

From: Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi>
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Pull up isReset flag from AllocSetContext to MemoryContextstruc
Date: 2011-05-21 18:54:52
Message-ID: E1QNrK8-0006jH-E7@gemulon.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Pull up isReset flag from AllocSetContext to MemoryContext struct. This
avoids the overhead of one function call when calling MemoryContextReset(),
and it seems like the isReset optimization would be applicable to any new
memory context we might invent in the future anyway.

This buys back the overhead I just added in previous patch to always call
MemoryContextReset() in ExecScan, even when there's no quals or projections.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/30e98a7e6e4869a7d6b3748ac9770bb8d69a8b26

Modified Files
--------------
src/backend/utils/mmgr/aset.c |   25 ++-----------------------
src/backend/utils/mmgr/mcxt.c |   18 ++++++++++++++++--
src/include/nodes/memnodes.h  |    1 +
3 files changed, 19 insertions(+), 25 deletions(-)

Responses

pgsql-committers by date

Next:From: Peter EisentrautDate: 2011-05-21 21:38:21
Subject: pgsql: Message improvement
Previous:From: Heikki LinnakangasDate: 2011-05-21 12:24:57
Subject: pgsql: In binary-upgrade mode,dump dropped attributes of composite typ

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group