| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sysds.runtime.compress.estim; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| |
| import org.apache.sysds.runtime.compress.CompressedMatrixBlock; |
| |
| /** |
| * A helper reusable object for maintaining information about estimated compression |
| */ |
| public class CompressedSizeInfo { |
| |
| public CompressedSizeInfoColGroup[] compressionInfo; |
| public List<Integer> colsC; |
| public List<Integer> colsUC; |
| public HashMap<Integer, Double> compRatios; |
| public int nnzUC; |
| |
| public CompressedSizeInfo(CompressedSizeInfoColGroup[] compressionInfo, List<Integer> colsC, List<Integer> colsUC, |
| HashMap<Integer, Double> compRatios, int nnzUC) { |
| this.compressionInfo = compressionInfo; |
| this.colsC = colsC; |
| this.colsUC = colsUC; |
| this.compRatios = compRatios; |
| this.nnzUC = nnzUC; |
| } |
| |
| public CompressedSizeInfoColGroup getGroupInfo(int index) { |
| return compressionInfo[index]; |
| } |
| |
| /** |
| * Method for returning the calculated memory usage from this specific compression plan. |
| * |
| * @return The in memory estimate as a long counting bytes. |
| */ |
| public long memoryEstimate() { |
| // Basic data inherited from MatrixBlock + CompressedMatrixBlock |
| long est = CompressedMatrixBlock.baseSizeInMemory(); |
| // Memory usage from all Compression Groups. |
| for(CompressedSizeInfoColGroup csi : compressionInfo) { |
| est += csi.getMinSize(); |
| } |
| |
| return est; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("CompressedSizeInfo"); |
| sb.append("\n - CompressableColumns: " + (colsC) + " UncompressableColumns: " + (colsUC)); |
| sb.append("\n - CompressionRatio: " + compRatios); |
| sb.append("\n - nnzUC: " + nnzUC); |
| return sb.toString(); |
| } |
| } |