85 lines
3.3 KiB
C#
85 lines
3.3 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="ThreadHelper"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using StgSharp.HighPerformance.ProcessorAbstraction;
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Threading;
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namespace StgSharp.Threading
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{
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public static partial class ThreadHelper
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{
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private static readonly int mainThreadId = Environment.CurrentManagedThreadId;
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private static readonly ThreadLocal<bool> isNotMainThread = new(
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() => Environment.CurrentManagedThreadId != mainThreadId);
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static ThreadHelper()
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{
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EmptyThread.Start();
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}
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/// <summary>
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/// An individual thread doing nothing, and its <see cref="Thread.IsAlive" /> <see
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/// langword="property" /> always returns false.
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/// </summary>
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public static Thread EmptyThread { get; } = new(() => { });
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public static void BindToLogicalCore(
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LogicalCore core
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)
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{
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SetThreadAffinity(core.GlobalCpuId, core.NumaNodeId);
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}
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[Conditional("DEBUG")]
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internal static void MainThreadAssert()
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{
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if (isNotMainThread.Value) {
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throw new InvalidOperationException(
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$"Attempt to call sensitive operation which can be only called from main thread from thread {Environment.CurrentManagedThreadId}.");
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}
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}
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#pragma warning disable CA5393
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[LibraryImport(Native.LibName, EntryPoint = "sn_set_thread_affinity")]
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[UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
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[DefaultDllImportSearchPaths(DllImportSearchPath.AssemblyDirectory)]
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private static partial void SetThreadAffinity(
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uint globalCoreId,
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uint numaNodeId
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);
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#pragma warning restore CA5393
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}
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}
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