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/*
* 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.
*/
using System;
namespace Lucene.Net.Index
{
sealed class IntBlockPool
{
private void InitBlock()
{
intUpto = DocumentsWriter.INT_BLOCK_SIZE;
}
public int[][] buffers = new int[10][];
internal int bufferUpto = - 1; // Which buffer we are upto
public int intUpto; // Where we are in head buffer
public int[] buffer; // Current head buffer
public int intOffset = - DocumentsWriter.INT_BLOCK_SIZE; // Current head offset
private DocumentsWriter docWriter;
internal bool trackAllocations;
public IntBlockPool(DocumentsWriter docWriter, bool trackAllocations)
{
InitBlock();
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)][];
Array.Copy(buffers, 0, newBuffers, 0, buffers.Length);
buffers = newBuffers;
}
buffer = buffers[1 + bufferUpto] = docWriter.GetIntBlock(trackAllocations);
bufferUpto++;
intUpto = 0;
intOffset += DocumentsWriter.INT_BLOCK_SIZE;
}
}
}
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