詳解C#獲取特定進(jìn)程CPU和內(nèi)存使用率
首先是獲取特定進(jìn)程對(duì)象,可以使用Process.GetProcesses()方法來(lái)獲取系統(tǒng)中運(yùn)行的所有進(jìn)程,或者使用Process.GetCurrentProcess()方法來(lái)獲取當(dāng)前程序所對(duì)應(yīng)的進(jìn)程對(duì)象。當(dāng)有了進(jìn)程對(duì)象后,可以通過(guò)進(jìn)程對(duì)象名稱來(lái)創(chuàng)建PerformanceCounter類型對(duì)象,通過(guò)設(shè)定PerformanceCounter構(gòu)造函數(shù)的參數(shù)實(shí)現(xiàn)獲取特定進(jìn)程的CPU和內(nèi)存使用情況。
具體實(shí)例代碼如下:
首先是獲取本機(jī)中所有進(jìn)程對(duì)象,分別輸出某一時(shí)刻各個(gè)進(jìn)程的內(nèi)存使用情況:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Threading; namespace CSharpPerformance {//該程序可以實(shí)時(shí)監(jiān)控所有進(jìn)程或者指定進(jìn)程的工作集、私有工作集 class Program { static void Main(string[] args) { //新建一個(gè)Stopwatch變量用來(lái)統(tǒng)計(jì)程序運(yùn)行時(shí)間 Stopwatch watch = Stopwatch.StartNew(); //獲取本機(jī)運(yùn)行的所有進(jìn)程ID和進(jìn)程名,并輸出哥進(jìn)程所使用的工作集和私有工作集 foreach (Process ps in Process.GetProcesses()) { PerformanceCounter pf1 = new PerformanceCounter("Process", "Working Set - Private", ps.ProcessName); PerformanceCounter pf2 = new PerformanceCounter("Process", "Working Set", ps.ProcessName); Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "工作集(進(jìn)程類)", ps.WorkingSet64 / 1024); Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "工作集 ", pf2.NextValue() / 1024); //私有工作集 Console.WriteLine("{0}:{1} {2:N}KB", ps.ProcessName, "私有工作集 ", pf1.NextValue() / 1024); } watch.Stop(); Console.WriteLine(watch.Elapsed); Console.ReadLine(); } } }
其中,工作集ps.WorkingSet64是靜態(tài)的,pf2.NextValue()是動(dòng)態(tài)變化的,工作集包含進(jìn)程運(yùn)行時(shí)其獨(dú)占的內(nèi)存和與其他進(jìn)程共享的內(nèi)存的和,而私有工作集是只包含進(jìn)程獨(dú)占的內(nèi)存。
下面一組代碼可以動(dòng)態(tài)顯示本程序所對(duì)應(yīng)的進(jìn)程的CPU和內(nèi)存使用率的變化:
首先是SystemInfo.cs類:
using System; using System.Collections.Generic; using System.Diagnostics; using System.Threading; using System.IO; using System.Text; using System.Management; using System.Runtime.InteropServices; namespace CSharpPerformance { public class SystemInfo { private int m_ProcessorCount = 0; //CPU個(gè)數(shù) private PerformanceCounter pcCpuLoad; //CPU計(jì)數(shù)器 private long m_PhysicalMemory = 0; //物理內(nèi)存 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聲明 [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 構(gòu)造函數(shù) /// <summary> /// 構(gòu)造函數(shù),初始化計(jì)數(shù)器等 /// </summary> public SystemInfo() { //初始化CPU計(jì)數(shù)器 pcCpuLoad = new PerformanceCounter("Processor", "% Processor Time", "_Total"); pcCpuLoad.MachineName = "."; pcCpuLoad.NextValue(); //CPU個(gè)數(shù) m_ProcessorCount = Environment.ProcessorCount; //獲得物理內(nèi)存 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(gè)數(shù) /// <summary> /// 獲取CPU個(gè)數(shù) /// </summary> public int ProcessorCount { get { return m_ProcessorCount; } } #endregion #region CPU占用率 /// <summary> /// 獲取CPU占用率 /// </summary> public float CpuLoad { get { return pcCpuLoad.NextValue(); } } #endregion #region 可用內(nèi)存 /// <summary> /// 獲取可用內(nèi)存 /// </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 物理內(nèi)存 /// <summary> /// 獲取物理內(nèi)存 /// </summary> public long PhysicalMemory { get { return m_PhysicalMemory; } } #endregion #region 結(jié)束指定進(jìn)程 /// <summary> /// 結(jié)束指定進(jìn)程 /// </summary> /// <param name="pid">進(jìn)程的 Process ID</param> public static void EndProcess(int pid) { try { Process process = Process.GetProcessById(pid); process.Kill(); } catch { } } #endregion #region 查找所有應(yīng)用程序標(biāo)題 /// <summary> /// 查找所有應(yīng)用程序標(biāo)題 /// </summary> /// <returns>應(yīng)用程序標(biāo)題范型</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 } }
然后是執(zhí)行代碼:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Threading; namespace CSharpPerformance {//該程序可以實(shí)時(shí)監(jiān)控程序本身對(duì)應(yīng)進(jìn)程的工作集、私有工作集和CPU使用率 class Program { static void Main(string[] args) { //獲取當(dāng)前進(jìn)程對(duì)象 Process cur = Process.GetCurrentProcess(); PerformanceCounter curpcp = new PerformanceCounter("Process", "Working Set - Private", cur.ProcessName); PerformanceCounter curpc = new PerformanceCounter("Process", "Working Set", cur.ProcessName); PerformanceCounter curtime = new PerformanceCounter("Process", "% Processor Time", cur.ProcessName); //上次記錄CPU的時(shí)間 TimeSpan prevCpuTime = TimeSpan.Zero; //Sleep的時(shí)間間隔 int interval = 1000; PerformanceCounter totalcpu = new PerformanceCounter("Processor", "% Processor Time", "_Total"); SystemInfo sys = new SystemInfo(); const int KB_DIV = 1024; const int MB_DIV = 1024 * 1024; const int GB_DIV = 1024 * 1024 * 1024; while (true) { //第一種方法計(jì)算CPU使用率 //當(dāng)前時(shí)間 TimeSpan curCpuTime = cur.TotalProcessorTime; //計(jì)算 double value = (curCpuTime - prevCpuTime).TotalMilliseconds / interval / Environment.ProcessorCount * 100; prevCpuTime = curCpuTime; Console.WriteLine("{0}:{1} {2:N}KB CPU使用率:{3}", cur.ProcessName, "工作集(進(jìn)程類)", cur.WorkingSet64 / 1024,value);//這個(gè)工作集只是在一開始初始化,后期不變 Console.WriteLine("{0}:{1} {2:N}KB CPU使用率:{3}", cur.ProcessName, "工作集 ", curpc.NextValue() / 1024,value);//這個(gè)工作集是動(dòng)態(tài)更新的 //第二種計(jì)算CPU使用率的方法 Console.WriteLine("{0}:{1} {2:N}KB CPU使用率:{3}%", cur.ProcessName, "私有工作集 ", curpcp.NextValue() / 1024,curtime.NextValue()/Environment.ProcessorCount); //Thread.Sleep(interval); //第一種方法獲取系統(tǒng)CPU使用情況 Console.Write("\r系統(tǒng)CPU使用率:{0}%", totalcpu.NextValue()); //Thread.Sleep(interval); //第二章方法獲取系統(tǒng)CPU和內(nèi)存使用情況 Console.Write("\r系統(tǒng)CPU使用率:{0}%,系統(tǒng)內(nèi)存使用大小:{1}MB({2}GB)", sys.CpuLoad, (sys.PhysicalMemory - sys.MemoryAvailable) / MB_DIV, (sys.PhysicalMemory - sys.MemoryAvailable) / (double)GB_DIV); Thread.Sleep(interval); } Console.ReadLine(); } } }
以上程序可以正常運(yùn)行,沒(méi)隔1S刷新一次,實(shí)現(xiàn)動(dòng)態(tài)顯示本程序?qū)?yīng)進(jìn)程的CPU和內(nèi)存使用情況。
原文鏈接:http://www.cnblogs.com/maowang1991/p/3285983.html
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。
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