C# 監視記憶體與處理器使用率
阿新 • • 發佈:2018-12-10
使用執行緒獲取資訊:
class MonitorThread { public delegate void refresh(string mem, string cpu, string up, string down); public event refresh refreshEvent; public ThreadStart ts ; public Thread thread; public SystemInfo systeminfo; public MonitorThread() { systeminfo = new SystemInfo(); ts = new ThreadStart(run); thread = new Thread(ts); thread.Start(); } public void run() { while (true) { Thread.Sleep(500); string mem = string.Format("{0:##}%", ((float)systeminfo.MemoryAvailable / (float)systeminfo.PhysicalMemory) * 100); string cpu = string.Format("{0:##}%", systeminfo.CpuLoad); refreshEvent(mem, cpu, "", ""); } } }
系統資訊類如下:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Runtime.InteropServices; using System.Management; namespace ComputerSteward.Classes { public class SystemInfo { private int m_ProcessorCount = 0; //CPU個數 private PerformanceCounter pcCpuLoad; //CPU計數器 private long m_PhysicalMemory = 0; //實體記憶體 private const int GW_HWNDFIRST = 0; private const int GW_HWNDNEXT = 2; private const int GWL_STYLE = (-16); private const int WS_VISIBLE = 268435456; private const int WS_BORDER = 8388608; #region AIP宣告 [DllImport("IpHlpApi.dll")] extern static public uint GetIfTable(byte[] pIfTable, ref uint pdwSize, bool bOrder); [DllImport("User32")] private extern static int GetWindow(int hWnd, int wCmd); [DllImport("User32")] private extern static int GetWindowLongA(int hWnd, int wIndx); [DllImport("user32.dll")] private static extern bool GetWindowText(int hWnd, StringBuilder title, int maxBufSize); [DllImport("user32", CharSet = CharSet.Auto)] private extern static int GetWindowTextLength(IntPtr hWnd); #endregion #region 建構函式 /// <summary> /// 建構函式,初始化計數器等 /// </summary> public SystemInfo() { //初始化CPU計數器 pcCpuLoad = new PerformanceCounter("Processor", "% Processor Time", "_Total"); pcCpuLoad.MachineName = "."; pcCpuLoad.NextValue(); //CPU個數 m_ProcessorCount = Environment.ProcessorCount; //獲得實體記憶體 ManagementClass mc = new ManagementClass("Win32_ComputerSystem"); ManagementObjectCollection moc = mc.GetInstances(); foreach (ManagementObject mo in moc) { if (mo["TotalPhysicalMemory"] != null) { m_PhysicalMemory = long.Parse(mo["TotalPhysicalMemory"].ToString()); } } } #endregion #region CPU個數 /// <summary> /// 獲取CPU個數 /// </summary> public int ProcessorCount { get { return m_ProcessorCount; } } #endregion #region CPU佔用率 /// <summary> /// 獲取CPU佔用率 /// </summary> public float CpuLoad { get { return pcCpuLoad.NextValue(); } } #endregion #region 可用記憶體 /// <summary> /// 獲取可用記憶體 /// </summary> public long MemoryAvailable { get { long availablebytes = 0; //ManagementObjectSearcher mos = new ManagementObjectSearcher("SELECT * FROM Win32_PerfRawData_PerfOS_Memory"); //foreach (ManagementObject mo in mos.Get()) //{ // availablebytes = long.Parse(mo["Availablebytes"].ToString()); //} ManagementClass mos = new ManagementClass("Win32_OperatingSystem"); foreach (ManagementObject mo in mos.GetInstances()) { if (mo["FreePhysicalMemory"] != null) { availablebytes = 1024 * long.Parse(mo["FreePhysicalMemory"].ToString()); } } return availablebytes; } } #endregion #region 實體記憶體 /// <summary> /// 獲取實體記憶體 /// </summary> public long PhysicalMemory { get { return m_PhysicalMemory; } } #endregion #region 結束指定程序 /// <summary> /// 結束指定程序 /// </summary> /// <param name="pid">程序的 Process ID</param> public static void EndProcess(int pid) { try { Process process = Process.GetProcessById(pid); process.Kill(); } catch { } } #endregion #region 查詢所有應用程式標題 /// <summary> /// 查詢所有應用程式標題 /// </summary> /// <returns>應用程式標題範型</returns> public static List<string> FindAllApps(int Handle) { List<string> Apps = new List<string>(); int hwCurr; hwCurr = GetWindow(Handle, GW_HWNDFIRST); while (hwCurr > 0) { int IsTask = (WS_VISIBLE | WS_BORDER); int lngStyle = GetWindowLongA(hwCurr, GWL_STYLE); bool TaskWindow = ((lngStyle & IsTask) == IsTask); if (TaskWindow) { int length = GetWindowTextLength(new IntPtr(hwCurr)); StringBuilder sb = new StringBuilder(2 * length + 1); GetWindowText(hwCurr, sb, sb.Capacity); string strTitle = sb.ToString(); if (!string.IsNullOrEmpty(strTitle)) { Apps.Add(strTitle); } } hwCurr = GetWindow(hwCurr, GW_HWNDNEXT); } return Apps; } #endregion } }