■ 프로세스 CPU 사용률을 제한하는 방법을 보여준다.
▶ ProcessHelper.cs
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using System; using System.Diagnostics; using System.Runtime.InteropServices; using System.Threading; namespace TestProject { /// <summary> /// 프로세스 헬퍼 /// </summary> public static class ProcessHelper { //////////////////////////////////////////////////////////////////////////////////////////////////// Import ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 스레드 열기 - OpenThread(threadAccess, inheritHandle, threadID) /// <summary> /// 스레드 열기 /// </summary> /// <param name="threadAccess">스레드 액세스</param> /// <param name="inheritHandle">상속 핸들</param> /// <param name="threadID">스레드 ID</param> /// <returns>스레드 핸들</returns> [DllImport("kernel32.dll")] private static extern IntPtr OpenThread(ThreadAccess threadAccess, bool inheritHandle, uint threadID); #endregion #region 스레드 실행 일시 중지하기 - SuspendThread(threadHandle) /// <summary> /// 스레드 실행 일시 중지하기 /// </summary> /// <param name="threadHandle">스레드 핸들</param> /// <returns>처리 결과</returns> [DllImport("kernel32.dll")] private static extern uint SuspendThread(IntPtr threadHandle); #endregion #region 스레드 다시 실행하기 - ResumeThread(threadHandle) /// <summary> /// 스레드 다시 실행하기 /// </summary> /// <param name="threadHandle">스레드 핸들</param> /// <returns>처리 결과</returns> [DllImport("kernel32.dll")] private static extern int ResumeThread(IntPtr threadHandle); #endregion #region 핸들 닫기 - CloseHandle(threadHandle) /// <summary> /// 핸들 닫기 /// </summary> /// <param name="threadHandle">스레드 핸들</param> /// <returns>처리 결과</returns> [DllImport("kernel32.dll")] private static extern int CloseHandle(IntPtr threadHandle); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Public #region 프로세스 실행 일시 중지하기 - SuspendProcess(processID) /// <summary> /// 프로세스 실행 일시 중지하기 /// </summary> /// <param name="processID">프로세스 ID</param> public static void SuspendProcess(int processID) { Process process = Process.GetProcessById(processID); if(process.ProcessName == string.Empty) { return; } foreach(ProcessThread processThread in process.Threads) { IntPtr threadHandle = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)processThread.Id); if(threadHandle == IntPtr.Zero) { continue; } SuspendThread(threadHandle); CloseHandle(threadHandle); } } #endregion #region 프로세스 다시 실행하기 - ResumeProcess(processiD) /// <summary> /// 프로세스 다시 실행하기 /// </summary> /// <param name="processiD">프로세스 ID</param> public static void ResumeProcess(int processiD) { Process process = Process.GetProcessById(processiD); if(process.ProcessName == string.Empty) { return; } foreach(ProcessThread processThread in process.Threads) { IntPtr threadHandle = OpenThread(ThreadAccess.SUSPEND_RESUME, false, (uint)processThread.Id); if(threadHandle == IntPtr.Zero) { continue; } var suspendCount = 0; do { suspendCount = ResumeThread(threadHandle); } while(suspendCount > 0); CloseHandle(threadHandle); } } #endregion #region 프로세스 조절하기 - ThrottleProcess(processID, limitCPURate) /// <summary> /// 프로세스 조절하기 /// </summary> /// <param name="processID">프로세스 ID</param> /// <param name="limitUsage">제한 사용률</param> public static void ThrottleProcess(int processID, double limitUsage) { Process process = Process.GetProcessById(processID); string instanceName = process.ProcessName; PerformanceCounter counter = new PerformanceCounter("Process", "% Processor Time", instanceName); int interval = 100; while(true) { Thread.Sleep(interval); float currentUsage = counter.NextValue() / Environment.ProcessorCount; if(currentUsage < limitUsage) { continue; } double suspensionTime = (currentUsage - limitUsage) / currentUsage * interval; SuspendProcess(processID); Thread.Sleep((int)suspensionTime); ResumeProcess(processID); } } #endregion } } |
▶ Program.cs
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using System; using System.Diagnostics; namespace TestProject { /// <summary> /// 프로그램 /// </summary> class Program { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 프로세스 /// </summary> private static Process _process = null; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 프로그램 시작하기 - Main() /// <summary> /// 프로그램 시작하기 /// </summary> private static void Main() { Console.CancelKeyPress += Console_CancelKeyPress; _process = new Process(); _process.EnableRaisingEvents = false; _process.StartInfo.FileName = "TestWorker.exe"; _process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; _process.Start(); _process.PriorityClass = ProcessPriorityClass.BelowNormal; ProcessHelper.ThrottleProcess(_process.Id, 0.3); } #endregion #region 콘솔 취소 키 PRESS 처리하기 - Console_CancelKeyPress(sender, e) /// <summary> /// 콘솔 취소 키 PRESS 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private static void Console_CancelKeyPress(object sender, ConsoleCancelEventArgs e) { ProcessHelper.ResumeProcess(_process.Id); _process.Kill(); } #endregion } } |
