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https://github.com/openhardwaremonitor/openhardwaremonitor
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81 lines
2.5 KiB
C#
81 lines
2.5 KiB
C#
/*
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, You can obtain one at http://mozilla.org/MPL/2.0/.
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Copyright (C) 2012 Michael Möller <mmoeller@openhardwaremonitor.org>
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*/
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using System.Runtime.InteropServices;
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namespace OpenHardwareMonitor.Hardware.RAM {
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internal class GenericRAM : Hardware {
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private Sensor loadSensor;
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private Sensor usedMemory;
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private Sensor availableMemory;
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public GenericRAM(string name, ISettings settings)
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: base(name, new Identifier("ram"), settings)
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{
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loadSensor = new Sensor("Memory", 0, SensorType.Load, this, settings);
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ActivateSensor(loadSensor);
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usedMemory = new Sensor("Used Memory", 0, SensorType.Data, this,
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settings);
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ActivateSensor(usedMemory);
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availableMemory = new Sensor("Available Memory", 1, SensorType.Data, this,
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settings);
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ActivateSensor(availableMemory);
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}
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public override HardwareType HardwareType {
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get {
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return HardwareType.RAM;
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}
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}
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public override void Update() {
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NativeMethods.MemoryStatusEx status = new NativeMethods.MemoryStatusEx();
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status.Length = checked((uint)Marshal.SizeOf(
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typeof(NativeMethods.MemoryStatusEx)));
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if (!NativeMethods.GlobalMemoryStatusEx(ref status))
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return;
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loadSensor.Value = 100.0f -
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(100.0f * status.AvailablePhysicalMemory) /
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status.TotalPhysicalMemory;
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usedMemory.Value = (float)(status.TotalPhysicalMemory
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- status.AvailablePhysicalMemory) / (1024 * 1024 * 1024);
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availableMemory.Value = (float)status.AvailablePhysicalMemory /
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(1024 * 1024 * 1024);
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}
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private class NativeMethods {
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[StructLayout(LayoutKind.Sequential)]
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public struct MemoryStatusEx {
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public uint Length;
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public uint MemoryLoad;
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public ulong TotalPhysicalMemory;
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public ulong AvailablePhysicalMemory;
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public ulong TotalPageFile;
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public ulong AvailPageFile;
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public ulong TotalVirtual;
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public ulong AvailVirtual;
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public ulong AvailExtendedVirtual;
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}
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[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool GlobalMemoryStatusEx(
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ref NativeMethods.MemoryStatusEx buffer);
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}
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}
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}
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