91 lines
3.1 KiB
C#
91 lines
3.1 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy 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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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. 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.Generic;
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using System.Text;
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using dnlib.DotNet;
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using dnSpy.Contracts.Decompiler;
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using ICSharpCode.Decompiler;
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using ICSharpCode.Decompiler.Ast;
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namespace dnSpy.Decompiler.ILSpy.Core.CSharp {
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/// <summary>
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/// State for one decompiler thread. There should be at most one of these per CPU. This class
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/// is not thread safe and must only be accessed by the owner thread.
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/// </summary>
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sealed class AstBuilderState {
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public readonly AstBuilder AstBuilder;
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/// <summary>
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/// <see cref="StringBuilder"/> instance used by XML doc code. This is always in a random
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/// state (random text) and caller must Clear() it before use.
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/// </summary>
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public readonly StringBuilder XmlDoc_StringBuilder;
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readonly Dictionary<ModuleDef, bool> hasXmlDocFile;
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ModuleDef? lastModule;
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bool lastModuleResult;
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public AstBuilderState(int settingsVersion) {
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AstBuilder = new AstBuilder(new DecompilerContext(settingsVersion, null, null, true));
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XmlDoc_StringBuilder = new StringBuilder();
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hasXmlDocFile = new Dictionary<ModuleDef, bool>();
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}
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public bool? HasXmlDocFile(ModuleDef module) {
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if (lastModule == module)
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return lastModuleResult;
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if (hasXmlDocFile.TryGetValue(module, out var res)) {
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lastModule = module;
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lastModuleResult = res;
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return res;
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}
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return null;
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}
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public void SetHasXmlDocFile(ModuleDef module, bool value) {
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lastModule = module;
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lastModuleResult = value;
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hasXmlDocFile.Add(module, value);
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}
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/// <summary>
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/// Called to re-use this instance for another decompilation. Only the fields that need
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/// resetting will be reset.
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/// </summary>
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public void Reset() => AstBuilder.Reset();
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}
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/// <summary>
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/// One instance is created and stored in <see cref="DecompilationContext"/>. It's used by the
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/// decompiler threads to get an <see cref="AstBuilderState"/> instance.
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/// </summary>
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sealed class BuilderCache {
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readonly ThreadSafeObjectPool<AstBuilderState> astBuilderStatePool;
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public BuilderCache(int settingsVersion) => astBuilderStatePool = new ThreadSafeObjectPool<AstBuilderState>(Environment.ProcessorCount, () => new AstBuilderState(settingsVersion), resetAstBuilderState);
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static readonly Action<AstBuilderState> resetAstBuilderState = abs => abs.Reset();
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public AstBuilderState AllocateAstBuilderState() => astBuilderStatePool.Allocate();
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public void Free(AstBuilderState state) => astBuilderStatePool.Free(state);
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}
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}
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