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Overview
| Comment: | R-TREE optimization: unwrap the coordinate decode loop in rtreeCallbackConstraint(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
0bf7b51896ec441f62490964c7a44a3c |
| User & Date: | drh 2017-01-31 21:22:03 |
Context
|
2017-02-01
| ||
| 01:34 | Improved comments on the statGet() implementation in ANALYZE. No changes to code. (check-in: 9663eea2 user: drh tags: trunk) | |
|
2017-01-31
| ||
| 21:22 | R-TREE optimization: unwrap the coordinate decode loop in rtreeCallbackConstraint(). (check-in: 0bf7b518 user: drh tags: trunk) | |
| 19:10 | Very small performance improvements and size reductions in sqlite3VdbeExec() and blobSeekToRow(). (check-in: 85dddf2b user: drh tags: trunk) | |
Changes
Changes to ext/rtree/rtree.c.
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assert( pConstraint->op==RTREE_MATCH || pConstraint->op==RTREE_QUERY );
assert( nCoord==2 || nCoord==4 || nCoord==6 || nCoord==8 || nCoord==10 );
if( pConstraint->op==RTREE_QUERY && pSearch->iLevel==1 ){
pInfo->iRowid = readInt64(pCellData);
}
pCellData += 8;
for(i=0; i<nCoord; i++, pCellData += 4){
RTREE_DECODE_COORD(eInt, pCellData, aCoord[i]);
}
if( pConstraint->op==RTREE_MATCH ){
rc = pConstraint->u.xGeom((sqlite3_rtree_geometry*)pInfo,
nCoord, aCoord, &i);
if( i==0 ) *peWithin = NOT_WITHIN;
*prScore = RTREE_ZERO;
}else{
pInfo->aCoord = aCoord;
|
> > > | < < > > > |
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assert( pConstraint->op==RTREE_MATCH || pConstraint->op==RTREE_QUERY );
assert( nCoord==2 || nCoord==4 || nCoord==6 || nCoord==8 || nCoord==10 );
if( pConstraint->op==RTREE_QUERY && pSearch->iLevel==1 ){
pInfo->iRowid = readInt64(pCellData);
}
assert( nCoord>=2 && (nCoord&1)==0 );
i = 0;
do{
pCellData += 8;
RTREE_DECODE_COORD(eInt, pCellData, aCoord[i]);
RTREE_DECODE_COORD(eInt, (pCellData+4), aCoord[i+1]);
i+= 2;
}while( i<nCoord );
if( pConstraint->op==RTREE_MATCH ){
rc = pConstraint->u.xGeom((sqlite3_rtree_geometry*)pInfo,
nCoord, aCoord, &i);
if( i==0 ) *peWithin = NOT_WITHIN;
*prScore = RTREE_ZERO;
}else{
pInfo->aCoord = aCoord;
|