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我正在尝试调试不时崩溃的 WCF 服务。我使用 adplus 创建了一个故障转储文件，这很简单，我使用了这个命令。

adplus.exe -crash -pmn myservicehost.exe -o c:\dump

我正在使用 winDbg x64 版本 6.2.9200 打开文件 .dmp 文件。当我查看线程时！线程我看到有一堆线程正在等待回调完成（我认为）。

0:031> ~~[1b00]s
ntdll!NtWaitForMultipleObjects+0xa:
00000000`778d18ca c3              ret
0:029> ~~[1b00]s
ntdll!NtWaitForMultipleObjects+0xa:
00000000`778d18ca c3              ret

最终它崩溃了。这是我使用 !PrintException /d -nested 00000002814ad6d0 查看该异常的调用堆栈时的输出

Exception object: 00000002814af4c8
Exception type:   System.Runtime.CallbackException
Message:          A user callback threw an exception.  Check the exception stack and inner exception to determine the callback that failed.
InnerException:   System.ServiceModel.CommunicationObjectAbortedException, Use !PrintException 00000002814ad6d0 to see more.
StackTrace (generated):
    SP               IP               Function
    000000000FA89D40 000007FEDD9AD3E2 System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.OnClosed()+0x262
    000000000FA8C240 000007FEDD93759D System_ServiceModel_ni!System.ServiceModel.ServiceHostBase.OnClosed()+0x6d
    000000000FA8C290 000007FEDD9433D0 System_ServiceModel_ni!System.ServiceModel.ServiceHost.OnClosed()+0x10
    000000000FA8C2C0 000007FEDE185B86 System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.Abort()+0x2b6
    000000000FA8C3C0 000007FE8ABAC89C MyCompany_WcfApp_WcfAppServiceHost!MyCompany.WcfApp.WcfAppServiceHost.WcfAppServiceHost.FaultedServiceHandler(System.Object, System.EventArgs)+0x26c
    000000000FA8C5F0 0000000000000000 mscorlib_ni!System.EventHandler.Invoke(System.Object, System.EventArgs)+0x1
    000000000FA8C5F0 000007FEDE184E9A System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.OnFaulted()+0x1ca
    000000000FA8C670 000007FEDE184784 System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.Fault()+0x94
    000000000FA8C6E0 000007FEDE184E9A System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.OnFaulted()+0x1ca
    000000000FA8C760 000007FEDE184784 System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.Fault()+0x94
    000000000FA8C7D0 000007FEDE184E9A System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.OnFaulted()+0x1ca
    000000000FA8C850 000007FEDE184784 System_ServiceModel_ni!System.ServiceModel.Channels.CommunicationObject.Fault()+0x94
    000000000FA8C8C0 000007FEDE475407 System_ServiceModel_ni!System.ServiceModel.Channels.MsmqInputChannelBase.TryReceive(System.TimeSpan, System.ServiceModel.Channels.Message ByRef)+0x4f7
    000000000FA8EBF0 000007FEDE5409AE System_ServiceModel_ni!System.ServiceModel.Dispatcher.InputChannelBinder.TryReceive(System.TimeSpan, System.ServiceModel.Channels.RequestContext ByRef)+0x2e
    000000000FA8EC50 000007FEDEAC29E2 System_ServiceModel_ni!System.ServiceModel.Dispatcher.ErrorHandlingReceiver.TryReceive(System.TimeSpan, System.ServiceModel.Channels.RequestContext ByRef)+0x646022
    000000000FA8ECB0 000007FEDE47C8D6 System_ServiceModel_ni!System.ServiceModel.Dispatcher.ChannelHandler.TryTransactionalReceive(System.Transactions.Transaction, System.ServiceModel.Channels.RequestContext ByRef)+0x396
    000000000FA8ED70 000007FEDE47BE07 System_ServiceModel_ni!System.ServiceModel.Dispatcher.ChannelHandler.TransactedLoop()+0xb7
    000000000FA8EDF0 000007FEDE47BD31 System_ServiceModel_ni!System.ServiceModel.Dispatcher.ChannelHandler.SyncTransactionalMessagePump()+0x21
    000000000FA8EE20 000007FEDE47A829 System_ServiceModel_ni!System.ServiceModel.Dispatcher.ChannelHandler.OnStartSyncMessagePump(System.Object)+0x209
    000000000FA8EED0 000007FEDB6DE651 System_ServiceModel_Internals_ni!System.Runtime.IOThreadScheduler+ScheduledOverlapped.IOCallback(UInt32, UInt32, System.Threading.NativeOverlapped*)+0x71
    000000000FA8EF30 000007FEDB77A260 System_ServiceModel_Internals_ni!System.Runtime.Fx+IOCompletionThunk.UnhandledExceptionFrame(UInt32, UInt32, System.Threading.NativeOverlapped*)+0x9bcd0
    000000000FA8EF90 000007FEDF225C26 mscorlib_ni!System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32, UInt32, System.Threading.NativeOverlapped*)+0x96

问题是，这并没有真正帮助我。我需要找出是什么造成了所有这些锁。有人对我如何做到这一点有任何建议吗？我从来没有遇到过需要这种级别的调试的问题，老实说，我不是 100% 确定我在做什么。如果我没有提供足够的信息，请告诉我，我很乐意为您提供我能提供的任何其他信息。

谢谢

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1 回答 1

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如果有死锁，请尝试使用!SyncBlkSOS 命令确定死锁。

于 2014-03-02T16:20:49.093 回答