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Code review for palloc0 patch --- avoid dangerous and unnecessary

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practice of evaluating MemSet's arguments multiple times, except for
the special case of newNode(), where we can assume the argument is
a constant sizeof() operator.
Also, add GetMemoryChunkContext() to mcxt.c's API, in preparation for
fixing recent GEQO breakage.
This commit is contained in:
Tom Lane
2002-12-16 16:22:46 +00:00
parent e64c7feb2f
commit 88177f77b1
6 changed files with 160 additions and 52 deletions
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13
src/backend/nodes/nodes.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/nodes.c,v 1.18 2002/11/10 02:17:25 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/nodes.c,v 1.19 2002/12/16 16:22:46 tgl Exp $
*
* HISTORY
* Andrew Yu Oct 20, 1994 file creation
@ -17,16 +17,11 @@
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "nodes/nodes.h"
/*
* newNode -
* create a new node of the specified size and tag the node with the
* specified tag.
*
* !WARNING!: Avoid using newNode directly. You should be using the
* macro makeNode. eg. to create a Resdom node, use makeNode(Resdom)
*
* Support for newNode() macro
*/
Node *newNodeMacroHolder;
Node *newNodeMacroHolder;