1.我使用了InvokeRequired和Invoke来确保没有UI组件从错误的线程进行操作。
2.我在UI线程上同步了所有计时器对象。
3.我阅读了这篇文章http://www.ikriv.com/en/prog/info/dotnet/MysteriousHang.html关于OnUserPreferenceChanged,我确实遇到了这个问题,但我修复了它。
这是当我们从.Net 1.1迁移到.Net 2+后开始发生的。在此之前,它从未出现过卡顿。
当这个问题发生时,我使用Managed Stack Explorer定期从生产应用程序获取堆栈跟踪,主UI线程总是卡在一些新的随机位置。如果这是线程死锁,它不会被WaitOne阻塞,这并不像您所期望的那样。
我的应用程序执行以下操作:
- 使用多个System.Timers.Timer实例。
- 使用WMI来管理打印。
- 有一些后台线程对服务器进行Web服务调用,但不与UI交互。
- 有一些后台线程使用System.Diagnostics.Process查看计算机上的其他进程,并有时将其关闭。
- 与使用串口与钞票接受器通信的第三方dll进行交互。
- 与一些com / activex / ocx控件进行交互,以与信用卡读卡器进行交互。
这是一个它挂起并且所有堆栈跟踪的示例:
Thread ID: 2816
0. System.Threading.WaitHandle.WaitOne (Source Unavailable)
1. System.Threading.WaitHandle.WaitOne (Source Unavailable)
2. System.Threading.WaitHandle.WaitOne (Source Unavailable)
3. System.Management.MTAHelper.WorkerThread (Source Unavailable)
4. System.Threading.ThreadHelper.ThreadStart_Context (Source Unavailable)
5. System.Threading.ExecutionContext.Run (Source Unavailable)
6. System.Threading.ThreadHelper.ThreadStart (Source Unavailable)
Thread ID: 2828
Thread ID: 2852
0. MeiNet.EBDS.BillAcceptor.submitRequestStack (Source Unavailable)
1. MeiNet.EBDS.BillAcceptor.OnHandleEscrowed (Source Unavailable)
2. MeiNet.EBDS.BillAcceptor.EventHandler (Source Unavailable)
Thread ID: 2908
Thread ID: 2820
0. System.Threading.Thread.Sleep (Source Unavailable)
1. MyApp.ProcessKiller.startSpecialKillerLoop (ProcessKiller.cs:115)
2. System.Threading.ThreadHelper.ThreadStart_Context (Source Unavailable)
3. System.Threading.ExecutionContext.Run (Source Unavailable)
4. System.Threading.ThreadHelper.ThreadStart (Source Unavailable)
Thread ID: 2600
Thread ID: 2844
0. System.Threading.Thread.Start (Source Unavailable)
1. System.Net.TimerThread.Prod (Source Unavailable)
2. System.Net.TimerThread.TimerQueue.CreateTimer (Source Unavailable)
3. System.Net.ServicePoint..ctor (Source Unavailable)
4. System.Net.ServicePointManager.FindServicePointHelper (Source Unavailable)
5. System.Net.ServicePointManager.FindServicePoint (Source Unavailable)
6. System.Net.HttpWebRequest.FindServicePoint (Source Unavailable)
7. System.Net.HttpWebRequest.GetRequestStream (Source Unavailable)
8. System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke (Source Unavailable)
9. MyApp.MyServer.Server.hb4 (Reference.cs:588)
10. MyApp.HeartbeatSender.SendThreadedHeartbeat (HeartbeatSender.cs:81)
11. MyApp.HeartbeatSender.StartHeartbeatLoop (HeartbeatSender.cs:40)
12. System.Threading.ThreadHelper.ThreadStart_Context (Source Unavailable)
13. System.Threading.ExecutionContext.Run (Source Unavailable)
14. System.Threading.ThreadHelper.ThreadStart (Source Unavailable)
Thread ID: 2824
0. System.Threading.Thread.Sleep (Source Unavailable)
1. MyApp.OfficeMonitor.StartMonitoring (OfficeMonitor.cs:84)
2. System.Threading.ThreadHelper.ThreadStart_Context (Source Unavailable)
3. System.Threading.ExecutionContext.Run (Source Unavailable)
4. System.Threading.ThreadHelper.ThreadStart (Source Unavailable)
Thread ID: 2584
0. [Internal thisFrame, 'M-->U', System.Windows.Forms.UnsafeNativeMethods::GetModuleHandle] (Source Unavailable)
1. System.Windows.Forms.Application.get_ComCtlSupportsVisualStyles (Source Unavailable)
2. System.Windows.Forms.ButtonInternal.ButtonStandardAdapter.PaintWorker (Source Unavailable)
3. System.Windows.Forms.ButtonInternal.ButtonStandardAdapter.PaintUp (Source Unavailable)
4. System.Windows.Forms.ButtonInternal.ButtonStandardAdapter.PaintOver (Source Unavailable)
5. System.Windows.Forms.ButtonInternal.ButtonBaseAdapter.Paint (Source Unavailable)
6. System.Windows.Forms.ButtonBase.OnPaint (Source Unavailable)
7. System.Windows.Forms.Control.PaintWithErrorHandling (Source Unavailable)
8. System.Windows.Forms.Control.WmPaint (Source Unavailable)
9. System.Windows.Forms.Control.WndProc (Source Unavailable)
10. System.Windows.Forms.ButtonBase.WndProc (Source Unavailable)
11. System.Windows.Forms.Button.WndProc (Source Unavailable)
12. System.Windows.Forms.Control.ControlNativeWindow.OnMessage (Source Unavailable)
13. System.Windows.Forms.Control.ControlNativeWindow.WndProc (Source Unavailable)
14. System.Windows.Forms.NativeWindow.Callback (Source Unavailable)
15. [Internal thisFrame, 'M-->U', System.Windows.Forms.SafeNativeMethods::UpdateWindow] (Source Unavailable)
16. System.Windows.Forms.Control.Update (Source Unavailable)
17. System.Windows.Forms.Control.Refresh (Source Unavailable)
18. MyApp.MainForm.ClearFields (MainForm.cs:4057)
19. MyApp.MainForm.ShowHomeButtons (MainForm.cs:5664)
20. MyApp.MainForm.ShowScreenSaver (MainForm.cs:4284)
21. MyApp.MainForm.ScreensaverTimerTick (MainForm.cs:7817)
22. System.RuntimeMethodHandle.InvokeMethodFast (Source Unavailable)
23. System.Reflection.RuntimeMethodInfo.Invoke (Source Unavailable)
24. System.Delegate.DynamicInvokeImpl (Source Unavailable)
25. System.Windows.Forms.Control.InvokeMarshaledCallbackDo (Source Unavailable)
26. System.Windows.Forms.Control.InvokeMarshaledCallbackHelper (Source Unavailable)
27. System.Threading.ExecutionContext.runTryCode (Source Unavailable)
28. System.Threading.ExecutionContext.RunInternal (Source Unavailable)
29. System.Threading.ExecutionContext.Run (Source Unavailable)
30. System.Windows.Forms.Control.InvokeMarshaledCallback (Source Unavailable)
31. System.Windows.Forms.Control.InvokeMarshaledCallbacks (Source Unavailable)
32. System.Windows.Forms.Control.WndProc (Source Unavailable)
33. System.Windows.Forms.ScrollableControl.WndProc (Source Unavailable)
34. System.Windows.Forms.ContainerControl.WndProc (Source Unavailable)
35. System.Windows.Forms.Form.WndProc (Source Unavailable)
36. System.Windows.Forms.Control.ControlNativeWindow.OnMessage (Source Unavailable)
37. System.Windows.Forms.Control.ControlNativeWindow.WndProc (Source Unavailable)
38. System.Windows.Forms.NativeWindow.Callback (Source Unavailable)
39. [Internal thisFrame, 'M-->U', System.Windows.Forms.UnsafeNativeMethods::DispatchMessageW] (Source Unavailable)
40. System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop (Source Unavailable)
41. System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner (Source Unavailable)
42. System.Windows.Forms.Application.ThreadContext.RunMessageLoop (Source Unavailable)
43. System.Windows.Forms.Application.Run (Source Unavailable)
44. MyApp.MainForm.Main (MainForm.cs:2975)
你有什么建议我应该做什么吗?