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POH approach, but the sequel
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2 changed files with 6 additions and 43 deletions
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@ -10,13 +10,13 @@ namespace ARMeilleure.Common
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/// address through out the table's lifetime.
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/// </summary>
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/// <typeparam name="TEntry">Type of the entry in the table</typeparam>
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class EntryTable<TEntry> : IDisposable where TEntry : unmanaged
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class EntryTable<TEntry> where TEntry : unmanaged
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{
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private bool _disposed;
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private int _freeHint;
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private readonly int _pageCapacity; // Number of entries per page.
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private readonly int _pageLogCapacity;
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private readonly Dictionary<int, IntPtr> _pages;
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private readonly Dictionary<int, TEntry[]> _pages;
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private readonly BitMap _allocated;
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/// <summary>
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@ -41,7 +41,7 @@ namespace ARMeilleure.Common
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}
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_allocated = new BitMap();
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_pages = new Dictionary<int, IntPtr>();
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_pages = new Dictionary<int, TEntry[]>();
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_pageLogCapacity = BitOperations.Log2((uint)(pageSize / sizeof(TEntry)));
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_pageCapacity = 1 << _pageLogCapacity;
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}
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@ -149,49 +149,14 @@ namespace ARMeilleure.Common
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{
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var pageIndex = (int)((uint)(index & ~(_pageCapacity - 1)) >> _pageLogCapacity);
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if (!_pages.TryGetValue(pageIndex, out IntPtr page))
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if (!_pages.TryGetValue(pageIndex, out TEntry[] page))
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{
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page = Marshal.AllocHGlobal(sizeof(TEntry) * _pageCapacity);
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page = GC.AllocateUninitializedArray<TEntry>(_pageCapacity, pinned: true);
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_pages.Add(pageIndex, page);
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}
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return new Span<TEntry>((void*)page, _pageCapacity);
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}
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/// <summary>
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/// Releases all resources used by the <see cref="EntryTable{TEntry}"/> instance.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// Releases all unmanaged and optionally managed resources used by the <see cref="EntryTable{TEntry}{T}"/>
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/// instance.
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/// </summary>
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/// <param name="disposing"><see langword="true"/> to dispose managed resources also; otherwise just unmanaged resouces</param>
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protected virtual void Dispose(bool disposing)
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{
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if (!_disposed)
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{
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foreach (var page in _pages.Values)
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{
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Marshal.FreeHGlobal(page);
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}
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_disposed = true;
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}
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}
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/// <summary>
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/// Frees resources used by the <see cref="EntryTable{TEntry}"/> instance.
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/// </summary>
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~EntryTable()
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{
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Dispose(false);
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return page;
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}
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}
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}
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@ -174,8 +174,6 @@ namespace ARMeilleure.Translation
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_jumpTable.Dispose();
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_jumpTable = null;
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CountTable.Dispose();
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GCSettings.LargeObjectHeapCompactionMode = GCLargeObjectHeapCompactionMode.CompactOnce;
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}
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}
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