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Diffstat (limited to 'src/core/Util/AverageGuessMemoryModel.cs')
| -rw-r--r-- | src/core/Util/AverageGuessMemoryModel.cs | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/core/Util/AverageGuessMemoryModel.cs b/src/core/Util/AverageGuessMemoryModel.cs new file mode 100644 index 0000000..43dae7a --- /dev/null +++ b/src/core/Util/AverageGuessMemoryModel.cs @@ -0,0 +1,90 @@ +/* + * 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.Util +{ + + /// <summary> An average, best guess, MemoryModel that should work okay on most systems. + /// + /// </summary> + public class AverageGuessMemoryModel:MemoryModel + { + public AverageGuessMemoryModel() + { + InitBlock(); + } + + private void InitBlock() + { + sizes = new IdentityDictionary<Type, int>() + { + {typeof (bool), 1}, + {typeof (byte), 1}, + {typeof(sbyte), 1}, + {typeof (char), 2}, + {typeof (short), 2}, + {typeof (int), 4}, + {typeof (float), 4}, + {typeof (double), 8}, + {typeof (long), 8} + }; + } + // best guess primitive sizes + private System.Collections.Generic.Dictionary<Type, int> sizes; + + /* + * (non-Javadoc) + * + * <see cref="Lucene.Net.Util.MemoryModel.getArraySize()"/> + */ + + public override int ArraySize + { + get { return 16; } + } + + /* + * (non-Javadoc) + * + * <see cref="Lucene.Net.Util.MemoryModel.getClassSize()"/> + */ + + public override int ClassSize + { + get { return 8; } + } + + /* (non-Javadoc) + * <see cref="Lucene.Net.Util.MemoryModel.getPrimitiveSize(java.lang.Class)"/> + */ + public override int GetPrimitiveSize(Type clazz) + { + return sizes[clazz]; + } + + /* (non-Javadoc) + * <see cref="Lucene.Net.Util.MemoryModel.getReferenceSize()"/> + */ + + public override int ReferenceSize + { + get { return 4; } + } + } +}
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