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;
}
}