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Performance improvements.

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FossilOrigin-Name: 9f8e84ab9874a8af826763b1669adb57abd493ea
This commit is contained in:
drh
2013-06-06 23:44:25 +00:00
parent 4efc9298fb
commit 13e11b4356
3 changed files with 20 additions and 23 deletions
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12
manifest
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@@ -1,5 +1,5 @@
C Improved\smanagement\sof\sthe\sspace\sto\shold\sWhereLoop.aLTerm[].
D 2013-06-06T23:02:03.759
C Performance\simprovements.
D 2013-06-06T23:44:25.383
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 5e41da95d92656a5004b03d3576e8b226858a28e
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -289,7 +289,7 @@ F src/vtab.c b05e5f1f4902461ba9f5fc49bb7eb7c3a0741a83
F src/wal.c 436bfceb141b9423c45119e68e444358ee0ed35d
F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
F src/walker.c 4fa43583d0a84b48f93b1e88f11adf2065be4e73
F src/where.c e029cd3fe9f2fcc857cf19d05b352b2359638271
F src/where.c fb4bee9bfeb4c1c2019a2ed36cb49d1f72e8dda7
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
F test/aggnested.test 45c0201e28045ad38a530b5a144b73cd4aa2cfd6
@@ -1094,7 +1094,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
P b4a5dbad36bceabc5c5350e7676af6ad42de04eb
R c565385814d78fee98948398a72cac6f
P d4141ecbea3abbe83525910684fbd89eb74eeb34
R cd5ddc1e68b8c783ab773654e8fe4f69
U drh
Z 2b77e3c42c0b772f55707fe4d25f7e48
Z c534f818416a6634a12552ce3fcffbb2

2
manifest.uuid
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@@ -1 +1 @@
d4141ecbea3abbe83525910684fbd89eb74eeb34
9f8e84ab9874a8af826763b1669adb57abd493ea

19
src/where.c
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@@ -3883,8 +3883,9 @@ static void whereLoopInit(WhereLoop *p){
** Clear the WhereLoop.u union. Leave WhereLoop.pLTerm intact.
*/
static void whereLoopClearUnion(sqlite3 *db, WhereLoop *p){
if( (p->wsFlags & WHERE_VIRTUALTABLE)!=0 ){
if( p->u.vtab.needFree ) sqlite3_free(p->u.vtab.idxStr);
if( p->wsFlags & (WHERE_VIRTUALTABLE|WHERE_TEMP_INDEX) ){
if( (p->wsFlags & WHERE_VIRTUALTABLE)!=0 && p->u.vtab.needFree ){
sqlite3_free(p->u.vtab.idxStr);
p->u.vtab.needFree = 0;
p->u.vtab.idxStr = 0;
}else if( (p->wsFlags & WHERE_TEMP_INDEX)!=0 && p->u.btree.pIndex!=0 ){
@@ -3893,7 +3894,7 @@ static void whereLoopClearUnion(sqlite3 *db, WhereLoop *p){
p->u.btree.pIndex = 0;
}
}
}
/*
** Deallocate internal memory used by a WhereLoop object
@@ -3941,9 +3942,7 @@ static int whereLoopXfer(sqlite3 *db, WhereLoop *pTo, WhereLoop *pFrom){
pTo->u = pFrom->u;
if( pFrom->wsFlags & WHERE_VIRTUALTABLE ){
pFrom->u.vtab.needFree = 0;
}else if( (pFrom->wsFlags & WHERE_TEMP_INDEX)!=0 && pFrom->u.btree.pIndex!=0 ){
sqlite3DbFree(db, pFrom->u.btree.pIndex->zColAff);
sqlite3DbFree(db, pFrom->u.btree.pIndex);
}else if( (pFrom->wsFlags & WHERE_TEMP_INDEX)!=0 ){
pFrom->u.btree.pIndex = 0;
}
return SQLITE_OK;
@@ -4048,7 +4047,6 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
/* Overwrite an existing WhereLoop with an similar one that uses
** more terms of the index */
pNext = p->pNextLoop;
whereLoopClear(db, p);
break;
}else{
/* pTemplate is not helpful.
@@ -4062,7 +4060,6 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
){
/* Overwrite an existing WhereLoop with a better one */
pNext = p->pNextLoop;
whereLoopClear(db, p);
break;
}
}
@@ -4613,7 +4610,6 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){
if( pWInfo->wctrlFlags & WHERE_AND_ONLY ) return SQLITE_OK;
pWCEnd = pWC->a + pWC->nTerm;
pNew = pBuilder->pNew;
whereLoopInit(&sBest);
for(pTerm=pWC->a; pTerm<pWCEnd && rc==SQLITE_OK; pTerm++){
if( (pTerm->eOperator & WO_OR)!=0
@@ -4626,6 +4622,7 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){
WhereCost nRow = 0;
Bitmask prereq = mExtra;
whereLoopInit(&sBest);
pItem = pWInfo->pTabList->a + pNew->iTab;
iCur = pItem->iCursor;
sSubBuild = *pBuilder;
@@ -4669,9 +4666,9 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){
pNew->prereq = prereq;
memset(&pNew->u, 0, sizeof(pNew->u));
rc = whereLoopInsert(pBuilder, pNew);
}
}
whereLoopClear(pWInfo->pParse->db, &sBest);
}
}
return rc;
}