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Overview
| Comment: | Avoid unnecessary calls to object destructors for a small performance gain. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
aec94b6ee68fe50e2cc14388281e2ef5 |
| User & Date: | drh 2016-04-12 00:16:54 |
Context
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2016-04-12
| ||
| 00:26 | Performance optimization the Vdbe allocator. check-in: e2c4995b user: drh tags: trunk | |
| 00:16 | Avoid unnecessary calls to object destructors for a small performance gain. check-in: aec94b6e user: drh tags: trunk | |
| 00:00 | Performance improvements in sqlite3WhereExprUsage(). check-in: fdf75239 user: drh tags: trunk | |
Changes
Changes to src/select.c.
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sqlite3SrcListDelete(db, p->pSrc);
sqlite3ExprDelete(db, p->pWhere);
sqlite3ExprListDelete(db, p->pGroupBy);
sqlite3ExprDelete(db, p->pHaving);
sqlite3ExprListDelete(db, p->pOrderBy);
sqlite3ExprDelete(db, p->pLimit);
sqlite3ExprDelete(db, p->pOffset);
sqlite3WithDelete(db, p->pWith);
if( bFree ) sqlite3DbFree(db, p);
p = pPrior;
bFree = 1;
}
}
/*
................................................................................
#endif
/*
** Delete the given Select structure and all of its substructures.
*/
void sqlite3SelectDelete(sqlite3 *db, Select *p){
clearSelect(db, p, 1);
}
/*
** Return a pointer to the right-most SELECT statement in a compound.
*/
static Select *findRightmost(Select *p){
while( p->pNext ) p = p->pNext;
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sqlite3SrcListDelete(db, p->pSrc);
sqlite3ExprDelete(db, p->pWhere);
sqlite3ExprListDelete(db, p->pGroupBy);
sqlite3ExprDelete(db, p->pHaving);
sqlite3ExprListDelete(db, p->pOrderBy);
sqlite3ExprDelete(db, p->pLimit);
sqlite3ExprDelete(db, p->pOffset);
if( p->pWith ) sqlite3WithDelete(db, p->pWith);
if( bFree ) sqlite3DbFree(db, p);
p = pPrior;
bFree = 1;
}
}
/*
................................................................................
#endif
/*
** Delete the given Select structure and all of its substructures.
*/
void sqlite3SelectDelete(sqlite3 *db, Select *p){
if( p ) clearSelect(db, p, 1);
}
/*
** Return a pointer to the right-most SELECT statement in a compound.
*/
static Select *findRightmost(Select *p){
while( p->pNext ) p = p->pNext;
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Changes to src/tokenize.c.
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/* If the pParse->declareVtab flag is set, do not delete any table
** structure built up in pParse->pNewTable. The calling code (see vtab.c)
** will take responsibility for freeing the Table structure.
*/
sqlite3DeleteTable(db, pParse->pNewTable);
}
sqlite3WithDelete(db, pParse->pWithToFree);
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
for(i=pParse->nzVar-1; i>=0; i--) sqlite3DbFree(db, pParse->azVar[i]);
sqlite3DbFree(db, pParse->azVar);
while( pParse->pAinc ){
AutoincInfo *p = pParse->pAinc;
pParse->pAinc = p->pNext;
sqlite3DbFree(db, p);
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/* If the pParse->declareVtab flag is set, do not delete any table
** structure built up in pParse->pNewTable. The calling code (see vtab.c)
** will take responsibility for freeing the Table structure.
*/
sqlite3DeleteTable(db, pParse->pNewTable);
}
if( pParse->pWithToFree ) sqlite3WithDelete(db, pParse->pWithToFree);
sqlite3DeleteTrigger(db, pParse->pNewTrigger);
for(i=pParse->nzVar-1; i>=0; i--) sqlite3DbFree(db, pParse->azVar[i]);
sqlite3DbFree(db, pParse->azVar);
while( pParse->pAinc ){
AutoincInfo *p = pParse->pAinc;
pParse->pAinc = p->pNext;
sqlite3DbFree(db, p);
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