http://www.cnblogs.com/fujinliang/archive/2012/09/13/2684165.html 原文地址html
http://www.2cto.com/kf/201504/391343.htmlweb
https://msdn.microsoft.com/en-us/library/windows/desktop/ms681381(v=vs.85).aspx 錯誤代碼windows
需求:不少時候咱們須要後臺運行幾個Console來不停的計算數據,那麼部署到客戶服務器後,若是出現突發異常,程序掛掉了,那。。。?
解決方案:封裝了一個對後臺運行程序不停監測的功能,若是發現程序有異常,可是進程還在,這個時候就Kill掉這個進程,重啓後臺計算程序,這裏的計算程序均爲"控制檯運行程序"。
異常中能夠看到,Kill()進程的時候出現"拒絕訪問",在網上搜了下,
解決方案大體就這幾種: 在config裏增長identity
<system.web>
<identity impersonate="true" userName="Administrator" password="123456" />
</system.web>
檢測程序用"管理員身份運行"對監測的程序目錄分配權限結果是這幾種方式都沒能解決此問題。
我查看了Kill()方法的註釋:
// // 摘要:
// 當即中止關聯的進程。
// // 異常:
// System.ComponentModel.Win32Exception:
// 未能終止關聯的進程。 - 或 - 正在終止該進程。 - 或 - 關聯的進程是一個 Win16 可執行文件。
// // System.NotSupportedException:
// 您正嘗試爲遠程計算機上運行的進程調用 System.Diagnostics.Process.Kill()。 該方法僅對在本地計算機上運行的進程可用。 // // System.InvalidOperationException:
// 該進程已經退出。 - 或 - 沒有與此 System.Diagnostics.Process 對象關聯的進程。
public void Kill();
發現是一個Win32Exception的異常,隨後我又查閱了ms的官方文檔,果真有發現:
大概意思就是說若是這個監測程序是Console,這樣寫是沒問題的,能夠正常結束掉進程。但這裏由於須要在界面上展示出一些監測數據,這裏我用的是WPF,也就是文檔裏說的圖像界面程序。
MS的原話是這樣的:若是調用 Kill,則可能丟失進程編輯的數據或分配給進程的資源。
Kill 致使進程不正常終止,於是只應在必要時使用。CloseMainWindow 使進程可以有序終止並關閉全部窗口,因此對於有界面的應用程序,使用它更好。若是 CloseMainWindow 失敗,則可使用 Kill終止進程。Kill 是終止沒有圖形化界面的進程的惟一方法。 將Kill方法()改爲了CloseMainWindow()便可正常殺掉進程。
調用PDA中的接口調試,程序直接死了,不能結束進程,要重啓wince系統。複製到PDA中程序能夠正常調用掃碼接口,未解之謎。。。此代碼一部分用處在於此 ,尷尬。服務器
主要代碼ide
[MTAThread] private static void Main() { try { IntPtr handle = CreateToolhelp32Snapshot((uint)SnapShotFlags.TH32CS_SNAPPROCESS, 0); var pDictionary = new Dictionary<int, string>(); var strAppName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name; if ((int)handle != -1) { var pe32 = new Processentry32 { dwSize = (uint)Marshal.SizeOf(typeof(Processentry32)) }; int bMore = Process32First(handle, ref pe32); Processentry32 pe; Log.WriteLog("start:" + handle.ToString()); while (bMore == 1) { IntPtr temp = Marshal.AllocHGlobal((int)pe32.dwSize); Marshal.StructureToPtr(pe32, temp, true); pe = (Processentry32)Marshal.PtrToStructure(temp, typeof(Processentry32)); Marshal.FreeHGlobal(temp); Log.WriteLog(pe32.szExeFile + ":" + pe.th32ProcessID); pDictionary.Add((int)pe.th32ProcessID, pe.szExeFile); bMore = Process32Next(handle, ref pe32); } } var c = pDictionary.Values.ToList().Where(x => x.StartsWith(strAppName)).ToList(); var ic = c.Count; if (ic >= 2) { var p = pDictionary.Where(x => x.Value.StartsWith(strAppName)); if (MsgBoxs.ShowQMsgYes("檢測到已運行該程序,是否結束上一個進程") == DialogResult.Yes) { foreach (KeyValuePair<int, string> keyValuePair in p) { try { if (p.LastOrDefault().Key == keyValuePair.Key) break; Process cProcess = Process.GetProcessById(keyValuePair.Key); cProcess.CloseMainWindow(); //cProcess.Kill();//進程異常結束會殺不死進程而且報 Win32Exception Log.WriteLog("kill:" + keyValuePair.Value + ":" + keyValuePair.Key); } catch (Exception ex) { Log.WriteLog(ex); throw; } } } } var f = new FBase.MainForm(); f.DoScale(); Application.Run(f); } catch (Exception ex) { Log.WriteLog(ex); throw; } } [DllImport("coredll.Dll")] private static extern int GetLastError(); [DllImport("coredll.Dll")] private static extern int ReleaseMutex(IntPtr hMutex); [DllImport("coredll.Dll")] public static extern IntPtr CreateMutex(IntPtr lpMutexAttributes, bool InitialOwner, string MutexName); [DllImport("Toolhelp.dll")] public static extern IntPtr CreateToolhelp32Snapshot(uint flags, uint processid); [DllImport("Coredll.dll")] public static extern int CloseHandle(IntPtr handle); [DllImport("Toolhelp.dll")] public static extern int Process32First(IntPtr handle, ref Processentry32 pe); [DllImport("Toolhelp.dll")] public static extern int Process32Next(IntPtr handle, ref Processentry32 pe);
所有代碼ui
using System; using System.ComponentModel; using System.IO; using System.Linq; using System.Collections.Generic; using System.Runtime.InteropServices; using System.Text; using System.Windows.Forms; using PDAClient.FBase; using System.Diagnostics; namespace PDAClient { internal static class Program { [DllImport("coredll.Dll")] private static extern int GetLastError(); [DllImport("coredll.Dll")] private static extern int ReleaseMutex(IntPtr hMutex); [DllImport("coredll.Dll")] public static extern IntPtr CreateMutex(IntPtr lpMutexAttributes, bool InitialOwner, string MutexName); [DllImport("Toolhelp.dll")] public static extern IntPtr CreateToolhelp32Snapshot(uint flags, uint processid); [DllImport("Coredll.dll")] public static extern int CloseHandle(IntPtr handle); [DllImport("Toolhelp.dll")] public static extern int Process32First(IntPtr handle, ref Processentry32 pe); [DllImport("Toolhelp.dll")] public static extern int Process32Next(IntPtr handle, ref Processentry32 pe); [StructLayout(LayoutKind.Sequential)] public class SECURITY_ATTRIBUTES { public int nLength; public int lpSecurityDescriptor; public int bInheritHandle; } private const int ERROR_ALREADY_EXISTS = 0183; /// <summary> /// 應用程序的主入口點。 /// </summary> [MTAThread] private static void Main() { try { IntPtr handle = CreateToolhelp32Snapshot((uint)SnapShotFlags.TH32CS_SNAPPROCESS, 0); var pDictionary = new Dictionary<int, string>(); var strAppName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name; if ((int)handle != -1) { var pe32 = new Processentry32 { dwSize = (uint)Marshal.SizeOf(typeof(Processentry32)) }; int bMore = Process32First(handle, ref pe32); Processentry32 pe; Log.WriteLog("start:" + handle.ToString()); while (bMore == 1) { IntPtr temp = Marshal.AllocHGlobal((int)pe32.dwSize); Marshal.StructureToPtr(pe32, temp, true); pe = (Processentry32)Marshal.PtrToStructure(temp, typeof(Processentry32)); Marshal.FreeHGlobal(temp); Log.WriteLog(pe32.szExeFile + ":" + pe.th32ProcessID); pDictionary.Add((int)pe.th32ProcessID, pe.szExeFile); bMore = Process32Next(handle, ref pe32); } } var c = pDictionary.Values.ToList().Where(x => x.StartsWith(strAppName)).ToList(); var ic = c.Count; if (ic >= 2) { var p = pDictionary.Where(x => x.Value.StartsWith(strAppName)); if (MsgBoxs.ShowQMsgYes("檢測到已運行該程序,是否結束上一個進程") == DialogResult.Yes) { foreach (KeyValuePair<int, string> keyValuePair in p) { try { if (p.LastOrDefault().Key == keyValuePair.Key) break; Process cProcess = Process.GetProcessById(keyValuePair.Key); cProcess.CloseMainWindow(); //cProcess.Kill();//進程異常結束會殺不死進程而且報 Win32Exception Log.WriteLog("kill:" + keyValuePair.Value + ":" + keyValuePair.Key); } catch (Exception ex) { Log.WriteLog(ex); throw; } } } } var f = new FBase.MainForm(); f.DoScale(); Application.Run(f); } catch (Exception ex) { Log.WriteLog(ex); throw; } //if (!IsExist()) //{ // var f = new FBase.MainForm(); // f.DoScale(); // Application.Run(f); //} //Application.Run(new Decode_Class.Form1()); } /// <summary> /// 判斷程序是否已經運行 /// </summary> /// <returns> /// true: 程序已運行,則什麼都不作 /// false: 程序未運行,則啓動程序 /// </returns> public static bool IsExist() { string strAppName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name; IntPtr hMutex = CreateMutex(IntPtr.Zero, true, strAppName); if (hMutex == IntPtr.Zero) throw new ApplicationException("Failure creating mutex: " + Marshal.GetLastWin32Error().ToString("X")); if (Marshal.GetLastWin32Error() == ERROR_ALREADY_EXISTS) { ReleaseMutex(hMutex); return true; } return false; } } [StructLayout(LayoutKind.Sequential)] public struct Processentry32 { public uint dwSize; public uint cntUsage; public uint th32ProcessID; public IntPtr th32DefaultHeapID; public uint th32ModuleID; public uint cntThreads; public uint th32ParentProcessID; public int pcPriClassBase; public uint dwFlags; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] //注意,此處爲寬字符 public string szExeFile; public uint th32MemoryBase; public uint th32AccessKey; } public enum SnapShotFlags : uint { TH32CS_SNAPHEAPLIST = 0x00000001, TH32CS_SNAPPROCESS = 0x00000002, TH32CS_SNAPTHREAD = 0x00000004, TH32CS_SNAPMODULE = 0x00000008, TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST | TH32CS_SNAPPROCESS | TH32CS_SNAPTHREAD | TH32CS_SNAPMODULE), TH32CS_GETALLMODS = 0x80000000 } }