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Back out use of palloc0 in place if palloc/MemSet. Seems constant len

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to MemSet is a performance boost.
This commit is contained in:
Bruce Momjian
2002-11-11 03:02:20 +00:00
parent 5d283d89cb
commit 75fee4535d
38 changed files with 212 additions and 110 deletions
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5
src/backend/utils/cache/catcache.c vendored
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/catcache.c,v 1.100 2002/11/10 07:25:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/catcache.c,v 1.101 2002/11/11 03:02:19 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -808,7 +808,8 @@ InitCatCache(int id,
*
* Note: we assume zeroing initializes the Dllist headers correctly
*/
cp = (CatCache *) palloc0(sizeof(CatCache) + NCCBUCKETS * sizeof(Dllist));
cp = (CatCache *) palloc(sizeof(CatCache) + NCCBUCKETS * sizeof(Dllist));
MemSet((char *) cp, 0, sizeof(CatCache) + NCCBUCKETS * sizeof(Dllist));
/*
* initialize the cache's relation information for the relation

17
src/backend/utils/cache/relcache.c vendored
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.178 2002/11/10 07:25:14 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.179 2002/11/11 03:02:19 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1348,9 +1348,13 @@ formrdesc(const char *relationName,
/*
* allocate new relation desc
*/
relation = (Relation) palloc(sizeof(RelationData));
/*
* clear all fields of reldesc
*/
relation = (Relation) palloc0(sizeof(RelationData));
MemSet((char *) relation, 0, sizeof(RelationData));
relation->rd_targblock = InvalidBlockNumber;
/* make sure relation is marked as having no open file yet */
@@ -1376,7 +1380,8 @@ formrdesc(const char *relationName,
* get us launched. RelationCacheInitializePhase2() will read the
* real data from pg_class and replace what we've done here.
*/
relation->rd_rel = (Form_pg_class) palloc0(CLASS_TUPLE_SIZE);
relation->rd_rel = (Form_pg_class) palloc(CLASS_TUPLE_SIZE);
MemSet(relation->rd_rel, 0, CLASS_TUPLE_SIZE);
namestrcpy(&relation->rd_rel->relname, relationName);
relation->rd_rel->relnamespace = PG_CATALOG_NAMESPACE;
@@ -2049,7 +2054,8 @@ RelationBuildLocalRelation(const char *relname,
/*
* allocate a new relation descriptor and fill in basic state fields.
*/
rel = (Relation) palloc0(sizeof(RelationData));
rel = (Relation) palloc(sizeof(RelationData));
MemSet((char *) rel, 0, sizeof(RelationData));
rel->rd_targblock = InvalidBlockNumber;
@@ -2087,7 +2093,8 @@ RelationBuildLocalRelation(const char *relname,
/*
* initialize relation tuple form (caller may add/override data later)
*/
rel->rd_rel = (Form_pg_class) palloc0(CLASS_TUPLE_SIZE);
rel->rd_rel = (Form_pg_class) palloc(CLASS_TUPLE_SIZE);
MemSet((char *) rel->rd_rel, 0, CLASS_TUPLE_SIZE);
namestrcpy(&rel->rd_rel->relname, relname);
rel->rd_rel->relnamespace = relnamespace;