Arnold Vink
6a1a28a893
* Fix for Windows 11 22H2 (22621) incorrect total CPU load issue. * Fix for Windows 11 22H2 (22621) incorrect total CPU load issue.
54 lines
1.9 KiB
C#
54 lines
1.9 KiB
C#
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
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// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Copyright (C) LibreHardwareMonitor and Contributors.
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// All Rights Reserved.
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using System.Runtime.InteropServices;
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// ReSharper disable InconsistentNaming
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namespace LibreHardwareMonitor.Interop;
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internal class NtDll
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{
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private const string DllName = "ntdll.dll";
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[StructLayout(LayoutKind.Sequential)]
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internal struct SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION
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{
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public long IdleTime;
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public long KernelTime;
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public long UserTime;
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public long DpcTime;
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public long InterruptTime;
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public uint InterruptCount;
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}
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[StructLayout(LayoutKind.Sequential)]
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internal struct SYSTEM_PROCESSOR_IDLE_INFORMATION
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{
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public long IdleTime;
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public long C1Time;
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public long C2Time;
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public long C3Time;
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public uint C1Transitions;
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public uint C2Transitions;
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public uint C3Transitions;
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public uint Padding;
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}
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internal enum SYSTEM_INFORMATION_CLASS
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{
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SystemProcessorPerformanceInformation = 8,
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SystemProcessorIdleInformation = 42
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}
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[DllImport(DllName)]
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[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
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internal static extern int NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS SystemInformationClass, [Out] SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION[] SystemInformation, int SystemInformationLength, out int ReturnLength);
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[DllImport(DllName)]
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[DefaultDllImportSearchPaths(DllImportSearchPath.System32)]
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internal static extern int NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS SystemInformationClass, [Out] SYSTEM_PROCESSOR_IDLE_INFORMATION[] SystemInformation, int SystemInformationLength, out int ReturnLength);
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}
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