Я работаю над сложным приложением WPF, которое зависает в производстве один раз в несколько дней. Есть поток, отличный от данных заполнения потока графического интерфейса пользователя для моделей, которые привязываются к сетке и запускают событие INotifyPropertyChanged.PropertyChanged
. Я написал сценарий для присоединения MDbg к зависшему процессу и сброса текущей трассировки стека потоков. Это очень помогает при поиске причины тупика, но не помогает на этот раз.
Поток, обновляющий модели, останавливается при получении ReadLock
:
Thread [#:8]
*0. WindowsBase.dll#0!MS.Internal.ReaderWriterLockWrapper.get_ReadLock() (source line information unavailable)
1. WindowsBase.dll#0!System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(sender=<...>, args=System.ComponentModel.PropertyChangedEventArgs) (source line information unavailable)
2. ( ... firing PropertyChanged event ... )
То же самое происходит с потоком графического интерфейса:
Thread [#:0]
*0. WindowsBase.dll#0!MS.Internal.ReaderWriterLockWrapper.get_ReadLock() (source line information unavailable)
1. WindowsBase.dll#0!System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(sender=MyCompany.Windows.ViewModel.Window.WindowViewModel, args=System.ComponentModel.PropertyChangedEventArgs) (source line information unavailable)
2. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Model.ViewModelItemBase.NotifyPropertyChanged(propertyName="IsActive") (source line information unavailable)
3. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Window.WindowViewModel.set_IsActive(value=True) (source line information unavailable)
4. MyCompany.Windows.dll#0!MyCompany.Windows.ViewModel.Window.IsActiveBinding.OnWindowIsActiveChanged(sender=MyCompany.Xpf.Views.XpfRibbonShell.XpfRibbonShellView, e=System.EventArgs) (source line information unavailable)
5. WindowsBase.dll#0!MS.Internal.ComponentModel.PropertyChangeTracker.OnPropertyInvalidation(d=<N/A>, args=<N/A>) (source line information unavailable)
6. WindowsBase.dll#0!System.Windows.DependentList.InvalidateDependents(source=<N/A>, sourceArgs=<N/A>) (source line information unavailable)
7. WindowsBase.dll#0!System.Windows.DependencyObject.NotifyPropertyChange(args=<N/A>) (source line information unavailable)
8. WindowsBase.dll#0!System.Windows.DependencyObject.UpdateEffectiveValue(entryIndex=<N/A>, dp=<N/A>, metadata=<N/A>, oldEntry=<N/A>, newEntry=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>) (source line information unavailable)
9. WindowsBase.dll#0!System.Windows.DependencyObject.SetValueCommon(dp=<N/A>, value=<N/A>, metadata=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>, isInternal=<N/A>) (source line information unavailable)
10. WindowsBase.dll#0!System.Windows.DependencyObject.SetValue(key=<N/A>, value=<N/A>) (source line information unavailable)
11. PresentationFramework.dll#0!System.Windows.Window.HandleActivate(windowActivated=<N/A>) (source line information unavailable)
12. PresentationFramework.dll#0!System.Windows.Window.WmActivate(wParam=<N/A>) (source line information unavailable)
13. PresentationFramework.dll#0!System.Windows.Window.WindowFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
14. PresentationCore.dll#0!System.Windows.Interop.HwndSource.PublicHooksFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
15. WindowsBase.dll#0!MS.Win32.HwndWrapper.WndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
16. WindowsBase.dll#0!MS.Win32.HwndSubclass.DispatcherCallbackOperation(o=<N/A>) (source line information unavailable)
17. WindowsBase.dll#0!System.Windows.Threading.ExceptionWrapper.InternalRealCall(callback=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
18. WindowsBase.dll#0!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(source=System.Windows.Threading.Dispatcher, method=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<null>) (source line information unavailable)
19. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WrappedInvoke(callback=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<N/A>) (source line information unavailable)
20. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.InvokeImpl(priority=<N/A>, timeout=<N/A>, method=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
21. WindowsBase.dll#0!MS.Win32.HwndSubclass.SubclassWndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>) (source line information unavailable)
[IL Method without Metadata]
22. WindowsBase.dll#0!MS.Internal.ReaderWriterLockWrapper.get_ReadLock() (source line information unavailable)
23. WindowsBase.dll#0!System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(sender=MyCompany.Windows.ViewModel.Window.WindowViewModel, args=System.ComponentModel.PropertyChangedEventArgs) (source line information unavailable)
24. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Model.ViewModelItemBase.NotifyPropertyChanged(propertyName="IsActive") (source line information unavailable)
25. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Window.WindowViewModel.set_IsActive(value=False) (source line information unavailable)
26. MyCompany.Windows.dll#0!MyCompany.Windows.ViewModel.Window.IsActiveBinding.OnWindowIsActiveChanged(sender=MyCompany.Xpf.Views.XpfRibbonShell.XpfRibbonShellView, e=System.EventArgs) (source line information unavailable)
27. WindowsBase.dll#0!MS.Internal.ComponentModel.PropertyChangeTracker.OnPropertyInvalidation(d=<N/A>, args=<N/A>) (source line information unavailable)
28. WindowsBase.dll#0!System.Windows.DependentList.InvalidateDependents(source=<N/A>, sourceArgs=<N/A>) (source line information unavailable)
29. WindowsBase.dll#0!System.Windows.DependencyObject.NotifyPropertyChange(args=<N/A>) (source line information unavailable)
30. WindowsBase.dll#0!System.Windows.DependencyObject.UpdateEffectiveValue(entryIndex=<N/A>, dp=<N/A>, metadata=<N/A>, oldEntry=<N/A>, newEntry=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>) (source line information unavailable)
31. WindowsBase.dll#0!System.Windows.DependencyObject.SetValueCommon(dp=<N/A>, value=<N/A>, metadata=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>, isInternal=<N/A>) (source line information unavailable)
32. WindowsBase.dll#0!System.Windows.DependencyObject.SetValue(key=<N/A>, value=<N/A>) (source line information unavailable)
33. PresentationFramework.dll#0!System.Windows.Window.HandleActivate(windowActivated=<N/A>) (source line information unavailable)
34. PresentationFramework.dll#0!System.Windows.Window.WmActivate(wParam=<N/A>) (source line information unavailable)
35. PresentationFramework.dll#0!System.Windows.Window.WindowFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
36. PresentationCore.dll#0!System.Windows.Interop.HwndSource.PublicHooksFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
37. WindowsBase.dll#0!MS.Win32.HwndWrapper.WndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
38. WindowsBase.dll#0!MS.Win32.HwndSubclass.DispatcherCallbackOperation(o=<N/A>) (source line information unavailable)
39. WindowsBase.dll#0!System.Windows.Threading.ExceptionWrapper.InternalRealCall(callback=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
40. WindowsBase.dll#0!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(source=System.Windows.Threading.Dispatcher, method=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<null>) (source line information unavailable)
41. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WrappedInvoke(callback=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<N/A>) (source line information unavailable)
42. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.InvokeImpl(priority=<N/A>, timeout=<N/A>, method=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
43. WindowsBase.dll#0!MS.Win32.HwndSubclass.SubclassWndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>) (source line information unavailable)
[IL Method without Metadata]
44. WindowsBase.dll#0!MS.Internal.ReaderWriterLockWrapper.get_ReadLock() (source line information unavailable)
45. WindowsBase.dll#0!System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(sender=MyCompany.Windows.ViewModel.Window.WindowViewModel, args=System.ComponentModel.PropertyChangedEventArgs) (source line information unavailable)
46. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Model.ViewModelItemBase.NotifyPropertyChanged(propertyName="IsActive") (source line information unavailable)
47. MyCompany.Windows.Contracts.dll#0!MyCompany.Windows.ViewModel.Window.WindowViewModel.set_IsActive(value=True) (source line information unavailable)
48. MyCompany.Windows.dll#0!MyCompany.Windows.ViewModel.Window.IsActiveBinding.OnWindowIsActiveChanged(sender=MyCompany.Xpf.Views.XpfRibbonShell.XpfRibbonShellView, e=System.EventArgs) (source line information unavailable)
49. WindowsBase.dll#0!MS.Internal.ComponentModel.PropertyChangeTracker.OnPropertyInvalidation(d=<N/A>, args=<N/A>) (source line information unavailable)
50. WindowsBase.dll#0!System.Windows.DependentList.InvalidateDependents(source=<N/A>, sourceArgs=<N/A>) (source line information unavailable)
51. WindowsBase.dll#0!System.Windows.DependencyObject.NotifyPropertyChange(args=<N/A>) (source line information unavailable)
52. WindowsBase.dll#0!System.Windows.DependencyObject.UpdateEffectiveValue(entryIndex=<N/A>, dp=<N/A>, metadata=<N/A>, oldEntry=<N/A>, newEntry=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>) (source line information unavailable)
53. WindowsBase.dll#0!System.Windows.DependencyObject.SetValueCommon(dp=<N/A>, value=<N/A>, metadata=<N/A>, coerceWithDeferredReference=<N/A>, coerceWithCurrentValue=<N/A>, operationType=<N/A>, isInternal=<N/A>) (source line information unavailable)
54. WindowsBase.dll#0!System.Windows.DependencyObject.SetValue(key=<N/A>, value=<N/A>) (source line information unavailable)
55. PresentationFramework.dll#0!System.Windows.Window.HandleActivate(windowActivated=<N/A>) (source line information unavailable)
56. PresentationFramework.dll#0!System.Windows.Window.WmActivate(wParam=<N/A>) (source line information unavailable)
57. PresentationFramework.dll#0!System.Windows.Window.WindowFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
58. PresentationCore.dll#0!System.Windows.Interop.HwndSource.PublicHooksFilterMessage(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
59. WindowsBase.dll#0!MS.Win32.HwndWrapper.WndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
60. WindowsBase.dll#0!MS.Win32.HwndSubclass.DispatcherCallbackOperation(o=<N/A>) (source line information unavailable)
61. WindowsBase.dll#0!System.Windows.Threading.ExceptionWrapper.InternalRealCall(callback=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
62. WindowsBase.dll#0!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(source=System.Windows.Threading.Dispatcher, method=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<null>) (source line information unavailable)
63. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WrappedInvoke(callback=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<N/A>) (source line information unavailable)
64. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.InvokeImpl(priority=<N/A>, timeout=<N/A>, method=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
65. WindowsBase.dll#0!MS.Win32.HwndSubclass.SubclassWndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>) (source line information unavailable)
[IL Method without Metadata]
66. WindowsBase.dll#0!System.ComponentModel.PropertyChangedEventManager.PrivateAddListener(source=<N/A>, listener=<N/A>, propertyName=<N/A>) (source line information unavailable)
67. PresentationFramework.dll#0!MS.Internal.Data.PropertyPathWorker.ReplaceItem(k=<N/A>, newO=<N/A>, parent=<N/A>) (source line information unavailable)
68. PresentationFramework.dll#0!MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(k=<N/A>, collectionView=<N/A>, newValue=<N/A>, isASubPropertyChange=<N/A>) (source line information unavailable)
69. PresentationFramework.dll#0!MS.Internal.Data.ClrBindingWorker.AttachDataItem() (source line information unavailable)
70. PresentationFramework.dll#0!System.Windows.Data.BindingExpression.Activate(item=<N/A>) (source line information unavailable)
71. PresentationFramework.dll#0!System.Windows.Data.BindingExpression.AttachToContext(attempt=<N/A>) (source line information unavailable)
72. PresentationFramework.dll#0!System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(lastChance=<N/A>) (source line information unavailable)
73. PresentationFramework.dll#0!MS.Internal.Data.DataBindEngine+Task.Run(lastChance=<N/A>) (source line information unavailable)
74. PresentationFramework.dll#0!MS.Internal.Data.DataBindEngine.Run(arg=<N/A>) (source line information unavailable)
75. PresentationFramework.dll#0!MS.Internal.Data.DataBindEngine.OnLayoutUpdated(sender=<N/A>, e=<N/A>) (source line information unavailable)
76. PresentationCore.dll#0!System.Windows.ContextLayoutManager.fireLayoutUpdateEvent() (source line information unavailable)
77. PresentationCore.dll#0!System.Windows.ContextLayoutManager.UpdateLayout() (source line information unavailable)
78. PresentationCore.dll#0!System.Windows.ContextLayoutManager.UpdateLayoutCallback(arg=<N/A>) (source line information unavailable)
79. PresentationCore.dll#0!System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() (source line information unavailable)
80. PresentationCore.dll#0!System.Windows.Media.MediaContext.RenderMessageHandlerCore(resizedCompositionTarget=<N/A>) (source line information unavailable)
81. PresentationCore.dll#0!System.Windows.Media.MediaContext.RenderMessageHandler(resizedCompositionTarget=<N/A>) (source line information unavailable)
82. WindowsBase.dll#0!System.Windows.Threading.ExceptionWrapper.InternalRealCall(callback=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
83. WindowsBase.dll#0!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(source=System.Windows.Threading.Dispatcher, method=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<null>) (source line information unavailable)
84. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WrappedInvoke(callback=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<N/A>) (source line information unavailable)
85. WindowsBase.dll#0!System.Windows.Threading.DispatcherOperation.InvokeImpl() (source line information unavailable)
86. mscorlib.dll#0!System.Threading.ExecutionContext.runTryCode(userData=<N/A>) (source line information unavailable)
87. mscorlib.dll#0!System.Threading.ExecutionContext.Run(executionContext=<N/A>, callback=<N/A>, state=<N/A>, ignoreSyncCtx=<N/A>) (source line information unavailable)
88. mscorlib.dll#0!System.Threading.ExecutionContext.Run(executionContext=<N/A>, callback=<N/A>, state=<N/A>) (source line information unavailable)
89. WindowsBase.dll#0!System.Windows.Threading.DispatcherOperation.Invoke() (source line information unavailable)
90. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.ProcessQueue() (source line information unavailable)
91. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WndProcHook(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
92. WindowsBase.dll#0!MS.Win32.HwndWrapper.WndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>, handled=<N/A>) (source line information unavailable)
93. WindowsBase.dll#0!MS.Win32.HwndSubclass.DispatcherCallbackOperation(o=<N/A>) (source line information unavailable)
94. WindowsBase.dll#0!System.Windows.Threading.ExceptionWrapper.InternalRealCall(callback=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
95. WindowsBase.dll#0!MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(source=System.Windows.Threading.Dispatcher, method=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<null>) (source line information unavailable)
96. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.WrappedInvoke(callback=<N/A>, args=<N/A>, numArgs=<N/A>, catchHandler=<N/A>) (source line information unavailable)
97. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.InvokeImpl(priority=<N/A>, timeout=<N/A>, method=<N/A>, args=<N/A>, numArgs=<N/A>) (source line information unavailable)
98. WindowsBase.dll#0!MS.Win32.HwndSubclass.SubclassWndProc(hwnd=<N/A>, msg=<N/A>, wParam=<N/A>, lParam=<N/A>) (source line information unavailable)
[IL Method without Metadata]
[Internal Frame, 'M-->U']
[IL Method without Metadata]
99. WindowsBase.dll#0!System.Windows.Threading.Dispatcher.PushFrameImpl(frame=<N/A>) (source line information unavailable)
100. PresentationFramework.dll#0!System.Windows.Application.RunInternal(window=<N/A>) (source line information unavailable)
101. PresentationFramework.dll#0!System.Windows.Application.Run() (source line information unavailable)
102. MyProgram.exe#0!XamlGeneratedNamespace.GeneratedApplication.Main() (source line information unavailable)
Кажется, что кто-то держит WriteLock
, но никогда не отпускает - но как я могу проверить, кто это держит? Я вставил здесь всю трассировку стека, может ли кто-нибудь дать мне несколько указаний по основной причине, например, что HwndSubclass
и почему это происходит неоднократно в трассировке стека с изменением свойств IsActive
и WindowState
?
Пожалуйста, добавьте комментарии, если вам нужна дополнительная информация.
WindowViewModel.IsActive
есть проверка, гарантирующая, чтоPropertyChanged
событие срабатывает только тогда, когда новое значение не равно текущему значению. Я думаю, что свойство зависимости в элементе управления делает то же самое. - person Jeffrey Zhao   schedule 13.06.2014