8ec203f387
### Summary Updates the serialization strategy to use `MemoryMappedFile` instead of thick buffers. This has the benefit of being on-par with the current implementation (based on hardware/OS), however won't incur the double-memory issue. > [!Important] > **Developer Note** > The `BinaryFileWriter` and `BinaryFileReader` has been removed in favor of `MemoryMapFileWriter` and `UnmanagedDataReader`
78 lines
2.8 KiB
C#
78 lines
2.8 KiB
C#
/*************************************************************************
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* ModernUO *
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* Copyright 2019-2024 - ModernUO Development Team *
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* Email: hi@modernuo.com *
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* File: GenericPersistence.cs *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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*************************************************************************/
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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namespace Server;
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public abstract class GenericPersistence : Persistence, IGenericSerializable
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{
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private long _initialSize = 1024 * 1024;
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private MemoryMapFileWriter _fileToSave;
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public string Name { get; }
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public GenericPersistence(string name, int priority) : base(priority) => Name = name;
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public override void Preserialize(string savePath, ConcurrentQueue<Type> types)
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{
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var path = Path.Combine(savePath, Name);
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var filePath = Path.Combine(path, $"{Name}.bin");
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PathUtility.EnsureDirectory(path);
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_fileToSave = new MemoryMapFileWriter(new FileStream(filePath, FileMode.Create), _initialSize, types);
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}
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public override void Serialize()
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{
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World.ResetRoundRobin();
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World.PushToCache((this, this));
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}
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public override void WriteSnapshot()
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{
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string folderPath = null;
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using (var fs = _fileToSave.FileStream)
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{
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if (fs.Position > _initialSize)
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{
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_initialSize = fs.Position;
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}
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_fileToSave.Dispose();
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if (_fileToSave.Position == 0)
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{
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folderPath = Path.GetDirectoryName(fs.Name);
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}
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}
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if (folderPath != null)
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{
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Directory.Delete(folderPath);
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}
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}
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public override void Serialize(IGenericSerializable e, int threadIndex) => Serialize(_fileToSave);
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public abstract void Serialize(IGenericWriter writer);
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public override void Deserialize(string savePath, Dictionary<ulong, string> typesDb) =>
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AdhocPersistence.Deserialize(Path.Combine(savePath, Name, $"{Name}.bin"), Deserialize);
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public abstract void Deserialize(IGenericReader reader);
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}
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