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Merge pull request #413 from 4ba-Co/fix/412-peak-memory-usage 

fix: Correct abnormal memory spikes
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Leon / 狮子的魂 2025-12-31 21:53:00 +08:00 committed by GitHub
parent 0d152d91a5 93f7652594
commit fe2dfc1088
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1 changed files with 17 additions and 10 deletions
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27
binding/csharp/IP2Region.Net/Internal/ContentCacheStrategy.cs
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@ -3,25 +3,32 @@
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
// @Author Alan <lzh.shap@gmail.com> // @Author Alan <lzh.shap@gmail.com>
// @Date 2023/07/25 // @Date 2023/07/25
// Updated by Argo Zhang <argo@live.ca> at 2025/11/21 // Updated by Wong <vcd.hai@outlook.com> at 2025/12/31
namespace IP2Region.Net.Internal; namespace IP2Region.Net.Internal;
class ContentCacheStrategy : FileCacheStrategy class ContentCacheStrategy(string xdbPath) : ICacheStrategy
{ {
private readonly ReadOnlyMemory<byte> _cacheData; // TODO: these constants can be moved to the interface as defaults when using .NET 10
private const int HeaderInfoLength = 256;
private const int VectorIndexSize = 8;
public ContentCacheStrategy(string xdbPath) : base(xdbPath) private readonly ReadOnlyMemory<byte> _cacheData = File.ReadAllBytes(xdbPath);
public int IoCount => 0;
public void ResetIoCount()
{ {
_cacheData = base.GetData(0, (int)XdbFileStream.Length); // Do nothing
XdbFileStream.Close();
XdbFileStream.Dispose();
} }
public override ReadOnlyMemory<byte> GetData(long offset, int length) => _cacheData.Slice((int)offset, length); public ReadOnlyMemory<byte> GetVectorIndex(int offset)
=> _cacheData.Slice(HeaderInfoLength + offset, VectorIndexSize);
protected override void Dispose(bool disposing) public ReadOnlyMemory<byte> GetData(long offset, int length) => _cacheData.Slice((int)offset, length);
public void Dispose()
{ {
base.Dispose(false); // Do nothing
} }
} }