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Use the sqlite3ParserAddCleanup() mechanism to ensure that the AggInfo

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structure associated with an aggregate query is deallocated, for a performance
increase and size reduction.

FossilOrigin-Name: 7a1399671fa10c64d5358cc4d364d24c643fe9dd8da923356462267ee7962f61
This commit is contained in:
drh
2021-02-17 21:13:14 +00:00
parent 4b0229ae1f
commit c54246ffdf
5 changed files with 24 additions and 30 deletions
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17
src/prepare.c
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@@ -550,31 +550,16 @@ int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
return i;
}
/*
** Deallocate a single AggInfo object
*/
static void agginfoFree(sqlite3 *db, AggInfo *p){
sqlite3DbFree(db, p->aCol);
sqlite3DbFree(db, p->aFunc);
sqlite3DbFree(db, p);
}
/*
** Free all memory allocations in the pParse object
*/
void sqlite3ParserReset(Parse *pParse){
sqlite3 *db = pParse->db;
AggInfo *pThis = pParse->pAggList;
while( pThis ){
AggInfo *pNext = pThis->pNext;
agginfoFree(db, pThis);
pThis = pNext;
}
while( pParse->pCleanup ){
ParseCleanup *pCleanup = pParse->pCleanup;
pParse->pCleanup = pCleanup->pNext;
pCleanup->xCleanup(db, pCleanup->pPtr);
sqlite3DbFree(db, pCleanup);
sqlite3DbFreeNN(db, pCleanup);
}
sqlite3DbFree(db, pParse->aLabel);
if( pParse->pConstExpr ){