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Add the new internal interface sqlite3DbNNFreeNN(db,ptr) where both the

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db and ptr parameters are guaranteed to be non-NULL.  Use this where
appropriate to save more than 2 million CPU cycles on the standard
performance test.

FossilOrigin-Name: e5eaa80e81fdf86f2875a912b880272b8d099b82b08e945a7988c5dd0fe9d6b5
This commit is contained in:
drh
2022-08-22 02:00:26 +00:00
parent 05cb948bf7
commit 41ce47c4f4
18 changed files with 128 additions and 69 deletions
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11
src/expr.c
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@@ -1220,6 +1220,7 @@ void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr, u32 n){
*/
static SQLITE_NOINLINE void sqlite3ExprDeleteNN(sqlite3 *db, Expr *p){
assert( p!=0 );
assert( db!=0 );
assert( !ExprUseUValue(p) || p->u.iValue>=0 );
assert( !ExprUseYWin(p) || !ExprUseYSub(p) );
assert( !ExprUseYWin(p) || p->y.pWin!=0 || db->mallocFailed );
@@ -1252,7 +1253,7 @@ static SQLITE_NOINLINE void sqlite3ExprDeleteNN(sqlite3 *db, Expr *p){
}
}
if( !ExprHasProperty(p, EP_Static) ){
sqlite3DbFreeNN(db, p);
sqlite3DbNNFreeNN(db, p);
}
}
void sqlite3ExprDelete(sqlite3 *db, Expr *p){
@@ -2038,12 +2039,13 @@ static SQLITE_NOINLINE void exprListDeleteNN(sqlite3 *db, ExprList *pList){
int i = pList->nExpr;
struct ExprList_item *pItem = pList->a;
assert( pList->nExpr>0 );
assert( db!=0 );
do{
sqlite3ExprDelete(db, pItem->pExpr);
sqlite3DbFree(db, pItem->zEName);
if( pItem->zEName ) sqlite3DbNNFreeNN(db, pItem->zEName);
pItem++;
}while( --i>0 );
sqlite3DbFreeNN(db, pList);
sqlite3DbNNFreeNN(db, pList);
}
void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){
if( pList ) exprListDeleteNN(db, pList);
@@ -6075,6 +6077,7 @@ static int exprRefToSrcList(Walker *pWalker, Expr *pExpr){
int sqlite3ReferencesSrcList(Parse *pParse, Expr *pExpr, SrcList *pSrcList){
Walker w;
struct RefSrcList x;
assert( pParse->db!=0 );
memset(&w, 0, sizeof(w));
memset(&x, 0, sizeof(x));
w.xExprCallback = exprRefToSrcList;
@@ -6091,7 +6094,7 @@ int sqlite3ReferencesSrcList(Parse *pParse, Expr *pExpr, SrcList *pSrcList){
sqlite3WalkExpr(&w, pExpr->y.pWin->pFilter);
}
#endif
sqlite3DbFree(pParse->db, x.aiExclude);
if( x.aiExclude ) sqlite3DbNNFreeNN(pParse->db, x.aiExclude);
if( w.eCode & 0x01 ){
return 1;
}else if( w.eCode ){