package org.apache.lucene.index;/** * 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. */final class IntBlockPool {  public int[][] buffers = new int[10][];  int bufferUpto = -1;                        // Which buffer we are upto  public int intUpto = DocumentsWriter.INT_BLOCK_SIZE;             // Where we are in head buffer  public int[] buffer;                              // Current head buffer  public int intOffset = -DocumentsWriter.INT_BLOCK_SIZE;          // Current head offset  final private DocumentsWriter docWriter;  final boolean trackAllocations;  public IntBlockPool(DocumentsWriter docWriter, boolean trackAllocations) {    this.docWriter = docWriter;    this.trackAllocations = trackAllocations;  }  public void reset() {    if (bufferUpto != -1) {      if (bufferUpto > 0)        // Recycle all but the first buffer        docWriter.recycleIntBlocks(buffers, 1, 1+bufferUpto);      // Reuse first buffer      bufferUpto = 0;      intUpto = 0;      intOffset = 0;      buffer = buffers[0];    }  }  public void nextBuffer() {    if (1+bufferUpto == buffers.length) {      int[][] newBuffers = new int[(int) (buffers.length*1.5)][];      System.arraycopy(buffers, 0, newBuffers, 0, buffers.length);      buffers = newBuffers;    }    buffer = buffers[1+bufferUpto] = docWriter.getIntBlock(trackAllocations);    bufferUpto++;    intUpto = 0;    intOffset += DocumentsWriter.INT_BLOCK_SIZE;  }}