119 lines
3.7 KiB
C#
119 lines
3.7 KiB
C#
using System;
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using System.Buffers;
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using System.Collections.Generic;
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using System.Runtime.CompilerServices;
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namespace PerfectNumbers.Core
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{
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public static class ThreadStaticPools
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{
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[ThreadStatic]
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private static ArrayPool<FactorEntry>? _factorEntryPool;
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public static ArrayPool<FactorEntry> FactorEntryPool
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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return _factorEntryPool ??= ArrayPool<FactorEntry>.Create();
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}
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}
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[ThreadStatic]
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private static ArrayPool<FactorEntry128>? _factorEntry128Pool;
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public static ArrayPool<FactorEntry128> FactorEntry128Pool
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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return _factorEntry128Pool ??= ArrayPool<FactorEntry128>.Create();
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}
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}
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[ThreadStatic]
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private static ArrayPool<ulong>? _ulongPool;
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public static ArrayPool<ulong> UlongPool
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{
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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get
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{
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return _ulongPool ??= ArrayPool<ulong>.Create();
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}
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}
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[ThreadStatic]
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private static Dictionary<ulong, MersenneDivisorCycles.FactorCacheEntry>? _mersenneFactorCacheDictionary;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Dictionary<ulong, MersenneDivisorCycles.FactorCacheEntry> TakeMersenneFactorCacheDictionary()
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{
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Dictionary<ulong, MersenneDivisorCycles.FactorCacheEntry>? cache = _mersenneFactorCacheDictionary;
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if (cache is null)
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{
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return new Dictionary<ulong, MersenneDivisorCycles.FactorCacheEntry>(8);
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}
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_mersenneFactorCacheDictionary = null;
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cache.Clear();
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return cache;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ReturnMersenneFactorCacheDictionary(Dictionary<ulong, MersenneDivisorCycles.FactorCacheEntry> cache)
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{
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cache.Clear();
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_mersenneFactorCacheDictionary = cache;
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}
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[ThreadStatic]
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private static Dictionary<ulong, int>? _factorCountDictionary;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Dictionary<ulong, int> TakeFactorCountDictionary()
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{
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Dictionary<ulong, int>? dictionary = _factorCountDictionary;
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if (dictionary is null)
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{
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return new Dictionary<ulong, int>(8);
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}
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_factorCountDictionary = null;
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dictionary.Clear();
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return dictionary;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ReturnFactorCountDictionary(Dictionary<ulong, int> dictionary)
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{
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dictionary.Clear();
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_factorCountDictionary = dictionary;
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}
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[ThreadStatic]
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private static Dictionary<ulong, int>? _factorScratchDictionary;
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static Dictionary<ulong, int> TakeFactorScratchDictionary()
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{
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Dictionary<ulong, int>? dictionary = _factorScratchDictionary;
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if (dictionary is null)
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{
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return new Dictionary<ulong, int>(8);
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}
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_factorScratchDictionary = null;
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dictionary.Clear();
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return dictionary;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void ReturnFactorScratchDictionary(Dictionary<ulong, int> dictionary)
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{
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dictionary.Clear();
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_factorScratchDictionary = dictionary;
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}
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}
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}
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