| /* |
| * 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.controlprogram.parfor.util; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStreamWriter; |
| import java.util.HashMap; |
| import java.util.LinkedList; |
| |
| import org.apache.sysds.runtime.DMLRuntimeException; |
| import org.apache.sysds.runtime.data.DenseBlock; |
| import org.apache.sysds.runtime.matrix.data.MatrixBlock; |
| import org.apache.sysds.runtime.util.FastStringTokenizer; |
| |
| public class StagingFileUtils |
| { |
| |
| public static final int CELL_BUFFER_SIZE = 100000; |
| |
| public static void writeCellListToLocal( String fname, LinkedList<Cell> buffer ) |
| throws IOException |
| { |
| FileOutputStream fos = new FileOutputStream( fname, true ); |
| try(BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos))) { |
| //for obj reuse and preventing repeated buffer re-allocations |
| StringBuilder sb = new StringBuilder(); |
| for( Cell c : buffer ) { |
| sb.append(c.getRow()); |
| sb.append(' '); |
| sb.append(c.getCol()); |
| sb.append(' '); |
| sb.append(c.getValue()); |
| sb.append('\n'); |
| out.write( sb.toString() ); |
| sb.setLength(0); |
| } |
| } |
| } |
| |
| public static void writeKeyMappingToLocal( String fname, long[][] keys ) |
| throws IOException |
| { |
| FileOutputStream fos = new FileOutputStream( fname, true ); |
| try( BufferedWriter out = new BufferedWriter(new OutputStreamWriter(fos)) ) { |
| //for obj reuse and preventing repeated buffer re-allocations |
| StringBuilder sb = new StringBuilder(); |
| |
| for( long[] key : keys ) |
| { |
| sb.append(key[0]); |
| sb.append(' '); |
| sb.append(key[1]); |
| sb.append('\n'); |
| out.write( sb.toString() ); |
| sb.setLength(0); |
| } |
| } |
| } |
| |
| public static BufferedReader openKeyMap( String name ) |
| throws FileNotFoundException |
| { |
| FileInputStream fis = new FileInputStream( name ); |
| BufferedReader in = new BufferedReader(new InputStreamReader(fis)); |
| return in; |
| } |
| |
| public static void nextKeyMap( BufferedReader in, HashMap<Integer,HashMap<Long,Long>> map, int bi, int blen ) |
| throws NumberFormatException, IOException |
| { |
| String value = null; |
| FastStringTokenizer st = new FastStringTokenizer(' '); |
| while( (value=in.readLine())!=null ) |
| { |
| st.reset( value ); //reset tokenizer |
| long row1 = st.nextLong(); |
| long row2 = st.nextLong(); |
| |
| int id = (int)row1/blen; |
| if( !map.containsKey(id) ) |
| map.put(id, new HashMap<Long,Long>()); |
| |
| map.get(id).put(row1, row2); |
| if( id > bi ) |
| break; |
| } |
| } |
| |
| public static int nextSizedKeyMap( BufferedReader in, HashMap<Integer,HashMap<Long,Long>> map, int blen, int size ) |
| throws NumberFormatException, IOException |
| { |
| map.clear(); |
| |
| String value = null; |
| int len = 0; |
| FastStringTokenizer st = new FastStringTokenizer(' '); |
| while( (value=in.readLine())!=null ) |
| { |
| st.reset( value ); //reset tokenizer |
| long row1 = st.nextLong(); |
| long row2 = st.nextLong(); |
| |
| int id = (int)row1/blen; |
| if( !map.containsKey(id) ) |
| map.put(id, new HashMap<Long,Long>()); |
| |
| map.get(id).put(row1, row2); |
| len++; |
| |
| if( len >= size ) |
| break; |
| } |
| |
| return len; |
| } |
| |
| public static LinkedList<Cell> readCellListFromLocal( String fname ) |
| throws IOException |
| { |
| FileInputStream fis = new FileInputStream( fname ); |
| LinkedList<Cell> buffer = new LinkedList<>(); |
| try(BufferedReader in = new BufferedReader(new InputStreamReader(fis))) { |
| String value = null; |
| FastStringTokenizer st = new FastStringTokenizer(' '); |
| while( (value=in.readLine())!=null ) { |
| st.reset( value ); //reset tokenizer |
| long row = st.nextLong(); |
| long col = st.nextLong(); |
| double lvalue = st.nextDouble(); |
| Cell c = new Cell( row, col, lvalue ); |
| buffer.addLast( c ); |
| } |
| } |
| return buffer; |
| } |
| |
| public static MatrixBlock readCellList2BlockFromLocal( String fname, int blen ) |
| throws IOException, DMLRuntimeException |
| { |
| return readCellList2BlockFromLocal( fname, blen, false ); |
| } |
| |
| public static MatrixBlock readCellList2BlockFromLocal( String fname, int blen, boolean sparse ) |
| throws IOException, DMLRuntimeException |
| { |
| MatrixBlock tmp = new MatrixBlock( blen, blen, sparse ); |
| if( !sparse ) |
| tmp.allocateDenseBlockUnsafe(blen, blen); |
| |
| FileInputStream fis = new FileInputStream( fname ); |
| FastStringTokenizer st = new FastStringTokenizer(' '); |
| try(BufferedReader in = new BufferedReader(new InputStreamReader(fis))) { |
| String value = null; |
| if( sparse ) { |
| while( (value=in.readLine())!=null ) { |
| st.reset( value ); //reset tokenizer |
| int row = st.nextInt(); |
| int col = st.nextInt(); |
| double lvalue = st.nextDouble(); |
| tmp.quickSetValue(row, col, lvalue); |
| } |
| } |
| else { |
| DenseBlock a = tmp.getDenseBlock(); |
| while( (value=in.readLine())!=null ) { |
| st.reset( value ); //reset tokenizer |
| int row = st.nextInt(); |
| int col = st.nextInt(); |
| double lvalue = st.nextDouble(); |
| a.set(row, col, lvalue); |
| } |
| tmp.recomputeNonZeros(); |
| } |
| } |
| |
| //finally change internal representation if required |
| tmp.examSparsity(); |
| |
| return tmp; |
| } |
| |
| } |