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Diffstat (limited to 'src/core/Index/CharBlockPool.cs')
-rw-r--r-- | src/core/Index/CharBlockPool.cs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/core/Index/CharBlockPool.cs b/src/core/Index/CharBlockPool.cs new file mode 100644 index 0000000..0631fe0 --- /dev/null +++ b/src/core/Index/CharBlockPool.cs @@ -0,0 +1,69 @@ +/* + * 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 CharBlockPool + { + private void InitBlock() + { + charUpto = DocumentsWriter.CHAR_BLOCK_SIZE; + } + + public char[][] buffers = new char[10][]; + internal int numBuffer; + + internal int bufferUpto = - 1; // Which buffer we are upto + public int charUpto; // Where we are in head buffer + + public char[] buffer; // Current head buffer + public int charOffset = - DocumentsWriter.CHAR_BLOCK_SIZE; // Current head offset + private readonly DocumentsWriter docWriter; + + public CharBlockPool(DocumentsWriter docWriter) + { + InitBlock(); + this.docWriter = docWriter; + } + + public void Reset() + { + docWriter.RecycleCharBlocks(buffers, 1 + bufferUpto); + bufferUpto = - 1; + charUpto = DocumentsWriter.CHAR_BLOCK_SIZE; + charOffset = - DocumentsWriter.CHAR_BLOCK_SIZE; + } + + public void NextBuffer() + { + if (1 + bufferUpto == buffers.Length) + { + var newBuffers = new char[(int) (buffers.Length * 1.5)][]; + Array.Copy(buffers, 0, newBuffers, 0, buffers.Length); + buffers = newBuffers; + } + buffer = buffers[1 + bufferUpto] = docWriter.GetCharBlock(); + bufferUpto++; + + charUpto = 0; + charOffset += DocumentsWriter.CHAR_BLOCK_SIZE; + } + } +}
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