content: 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;
  
    public IntBlockPool(DocumentsWriter docWriter) {
      this.docWriter = docWriter;
    }
  
    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();
      bufferUpto++;
  
      intUpto = 0;
      intOffset += DocumentsWriter.INT_BLOCK_SIZE;
    }
  }
  
  