87 lines
3.6 KiB
C#
87 lines
3.6 KiB
C#
using CZGL.SystemInfo.Memory;
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using System;
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using System.Runtime.InteropServices;
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namespace CZGL.SystemInfo
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{
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/// <summary>
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///
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/// </summary>
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public partial class WindowsMemory
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{
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#if NET7_0_OR_GREATER
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/// <summary>
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/// 在内存超过 4 GB 的计算机上， GlobalMemoryStatus函数可能返回不正确的信息，报告值 –1 表示溢出。因此，应用程序应改用 GlobalMemoryStatusEx函数。
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/// </summary>
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/// <remarks>Windows XP [仅限桌面应用程序];最低支持服务器 Windows Server 2003 [仅限桌面应用程序]</remarks>
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/// <param name="lpBuffer"></param>
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[LibraryImport("Kernel32.dll", SetLastError = true)]
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public static partial void GlobalMemoryStatus(ref MEMORYSTATUS lpBuffer);
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/// <summary>
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/// 检索有关系统当前使用物理和虚拟内存的信息
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/// </summary>
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/// <remarks><see href="https://docs.microsoft.com/zh-cn/windows/win32/api/sysinfoapi/nf-sysinfoapi-globalmemorystatusex"/></remarks>
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/// <param name="lpBuffer"></param>
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/// <returns></returns>
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[LibraryImport("Kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial Boolean GlobalMemoryStatusEx(ref MemoryStatusExE lpBuffer);
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#else
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/// <summary>
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/// 在内存超过 4 GB 的计算机上， GlobalMemoryStatus函数可能返回不正确的信息，报告值 –1 表示溢出。因此，应用程序应改用 GlobalMemoryStatusEx函数。
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/// </summary>
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/// <remarks>Windows XP [仅限桌面应用程序];最低支持服务器 Windows Server 2003 [仅限桌面应用程序]</remarks>
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/// <param name="lpBuffer"></param>
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[DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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public static extern void GlobalMemoryStatus(ref MEMORYSTATUS lpBuffer);
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/// <summary>
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/// 检索有关系统当前使用物理和虚拟内存的信息
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/// </summary>
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/// <remarks><see href="https://docs.microsoft.com/zh-cn/windows/win32/api/sysinfoapi/nf-sysinfoapi-globalmemorystatusex"/></remarks>
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/// <param name="lpBuffer"></param>
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/// <returns></returns>
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[DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static extern Boolean GlobalMemoryStatusEx(ref MemoryStatusExE lpBuffer);
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#endif
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/// <summary>
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///
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/// </summary>
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/// <returns></returns>
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public static MemoryValue GetMemory()
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{
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// 检查 Windows 内核版本，是否为旧系统
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if (Environment.OSVersion.Version.Major < 5)
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{
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// https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions");
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return default;
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}
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MemoryStatusExE memoryStatusEx = new MemoryStatusExE();
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// 初始化结构的大小
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memoryStatusEx.Init();
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// 刷新值
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if (!GlobalMemoryStatusEx(ref memoryStatusEx)) return default;
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var TotalPhysicalMemory = memoryStatusEx.ullTotalPhys;
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var AvailablePhysicalMemory = memoryStatusEx.ullAvailPhys;
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var TotalVirtualMemory = memoryStatusEx.ullTotalVirtual;
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var AvailableVirtualMemory = memoryStatusEx.ullAvailVirtual;
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var UsedPercentage = memoryStatusEx.dwMemoryLoad;
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return new MemoryValue(
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TotalPhysicalMemory,
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AvailablePhysicalMemory,
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UsedPercentage,
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TotalVirtualMemory,
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AvailableVirtualMemory);
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}
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}
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}
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