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core/filtermaps: optimize getFilterMapRowsOfGroup

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This commit is contained in:
allen 2025-09-15 11:28:38 -04:00
parent 6924eeaee0
commit ff185db96d
1 changed files with 33 additions and 10 deletions
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43
core/filtermaps/filtermaps.go
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@ -600,27 +600,50 @@ func (f *FilterMaps) getFilterMapRows(mapIndices []uint32, rowIndex uint32, base
// getFilterMapRowsOfGroup fetches a set of filter map rows at map indices
// belonging to the same base row group.
func (f *FilterMaps) getFilterMapRowsOfGroup(target []FilterRow, mapIndices []uint32, rowIndex uint32, baseLayerOnly bool) error {
var (
groupIndex = f.mapGroupIndex(mapIndices[0])
mapRowIndex = f.mapRowIndex(groupIndex, rowIndex)
)
if len(mapIndices) == 0 {
return nil
}
groupIndex := f.mapGroupIndex(mapIndices[0])
mapRowIndex := f.mapRowIndex(groupIndex, rowIndex)
// Validate all indices belong to the same group before database access
for _, mapIndex := range mapIndices {
if f.mapGroupIndex(mapIndex) != groupIndex {
return fmt.Errorf("maps are not in the same base row group, index: %d, group: %d", mapIndex, groupIndex)
}
}
baseRows, err := rawdb.ReadFilterMapBaseRows(f.db, mapRowIndex, f.baseRowGroupSize, f.logMapWidth)
if err != nil {
return fmt.Errorf("failed to retrieve base row group %d of row %d: %v", groupIndex, rowIndex, err)
}
// Process base layer rows
for i, mapIndex := range mapIndices {
if f.mapGroupIndex(mapIndex) != groupIndex {
return fmt.Errorf("maps are not in the same base row group, index: %d, group: %d", mapIndex, groupIndex)
}
row := baseRows[f.mapGroupOffset(mapIndex)]
if !baseLayerOnly {
target[i] = row
}
// Batch process extended rows if needed
if !baseLayerOnly {
for i, mapIndex := range mapIndices {
extRow, err := rawdb.ReadFilterMapExtRow(f.db, f.mapRowIndex(mapIndex, rowIndex), f.logMapWidth)
if err != nil {
return fmt.Errorf("failed to retrieve filter map %d extended row %d: %v", mapIndex, rowIndex, err)
}
row = append(row, extRow...)
if len(extRow) > 0 {
// Use append with pre-calculated capacity if possible
baseRow := target[i]
if cap(baseRow)-len(baseRow) >= len(extRow) {
target[i] = append(baseRow, extRow...)
} else {
newRow := make(FilterRow, len(baseRow), len(baseRow)+len(extRow))
copy(newRow, baseRow)
target[i] = append(newRow, extRow...)
}
}
}
target[i] = row
}
return nil
}