.net 4.0 这是否表示终结器被阻止

我看到以下终结器线程的调用堆栈。在终结器的顶部调用WaitForSingleObject是否正常？不管怎样，我是否能确定它是否处于僵局或等待很长时间

0:009> k
Child-SP          RetAddr           Call Site
00000000`0a56e5c8 000007fe`fd5010dc ntdll!NtWaitForSingleObject+0xa
00000000`0a56e5d0 000007fe`fdfabeb5 KERNELBASE!WaitForSingleObjectEx+0x79
00000000`0a56e670 000007fe`fe04a576 rpcrt4!UTIL_GetOverlappedResultEx+0x45
00000000`0a56e6b0 000007fe`fdfaf0dd rpcrt4!WS_SyncRecv+0xf6
00000000`0a56e720 000007fe`fdfe7a29 rpcrt4!OSF_CCONNECTION::TransSendReceive+0x18d
00000000`0a56e780 000007fe`fdfa7f61 rpcrt4!OSF_CCONNECTION::SendBindPacket+0xa5c
00000000`0a56e930 000007fe`fdfa8e27 rpcrt4!OSF_CCONNECTION::ActuallyDoBinding+0xc1
00000000`0a56e9d0 000007fe`fdfa8bb6 rpcrt4!OSF_CCONNECTION::OpenConnectionAndBind+0x207
00000000`0a56ea90 000007fe`fdfa8acd rpcrt4!OSF_CCALL::BindToServer+0xc6
00000000`0a56eb40 000007fe`fdfadaeb rpcrt4!OSF_BINDING_HANDLE::InitCCallWithAssociation+0xa5
00000000`0a56eba0 000007fe`fdfad9d0 rpcrt4!OSF_BINDING_HANDLE::AllocateCCall+0x102
00000000`0a56ecd0 000007fe`fdfc74eb rpcrt4!OSF_BINDING_HANDLE::NegotiateTransferSyntax+0x30
00000000`0a56ed20 000007fe`ff462271 rpcrt4!I_RpcNegotiateTransferSyntax+0x9f
00000000`0a56edb0 000007fe`ff45d185 ole32!CRpcChannelBuffer::NegotiateSyntax+0x69 
00000000`0a56ee20 000007fe`fe05ba22 ole32!NdrExtNegotiateTransferSyntax+0xe5 
00000000`0a56ee60 000007fe`fe05cbbb rpcrt4!Ndr64pClientSetupTransferSyntax+0x453
00000000`0a56eec0 000007fe`ff4621d0 rpcrt4!NdrpClientCall3+0xcb
00000000`0a56f180 000007fe`ff31d8a2 ole32!ObjectStublessClient+0x11d 
00000000`0a56f510 000007fe`ff321bb3 ole32!ObjectStubless+0x42 
00000000`0a56f560 000007fe`ff321b22 ole32!RemoteReleaseRifRefHelper+0x57 
00000000`0a56f5b0 000007fe`ff3217eb ole32!RemoteReleaseRifRef+0xca 
00000000`0a56f620 000007fe`ff321417 ole32!CStdMarshal::DisconnectCliIPIDs+0x4c2 
00000000`0a56f720 000007fe`ff3194fa ole32!CStdMarshal::Disconnect+0x40c 
00000000`0a56f780 000007fe`ff319428 ole32!CStdIdentity::~CStdIdentity+0xa6 [d:\w7rtm\com\ole32\com\dcomrem\stdid.cxx @ 312]
00000000`0a56f7b0 000007fe`ff319b49 ole32!CStdIdentity::`scalar deleting destructor'+0x14
00000000`0a56f7e0 000007fe`f2a79f94 ole32!CStdIdentity::CInternalUnk::Release+0xdc [d:\w7rtm\com\ole32\com\dcomrem\stdid.cxx @ 767]
00000000`0a56f810 000007fe`f2ba8bea clr!SafeReleasePreemp+0x74
00000000`0a56f860 000007fe`f2ba8acc clr!RCW::ReleaseAllInterfaces+0xda
00000000`0a56f8b0 000007fe`f2ba8c14 clr!RCW::ReleaseAllInterfacesCallBack+0x54
00000000`0a56f930 000007fe`f2ba937e clr!RCW::Cleanup+0x25
00000000`0a56f980 000007fe`f2ba9214 clr!RCWCleanupList::ReleaseRCWListRaw+0x16
00000000`0a56f9b0 000007fe`f2bb005a clr!RCWCleanupList::ReleaseRCWListInCorrectCtx+0x94
00000000`0a56f9f0 000007fe`f2be326e clr!RCWCleanupList::CleanupAllWrappers+0xe5
00000000`0a56fa70 000007fe`f2be319f clr!SyncBlockCache::CleanupSyncBlocks+0xc2
00000000`0a56fae0 000007fe`f2be47c7 clr!Thread::DoExtraWorkForFinalizer+0xdc
00000000`0a56fb10 000007fe`f2a5458c clr!SVR::GCHeap::FinalizerThreadWorker+0x78
00000000`0a56fb50 000007fe`f2a5451a clr!Frame::Pop+0x50
00000000`0a56fb90 000007fe`f2a54491 clr!COMCustomAttribute::PopSecurityContextFrame+0x192
00000000`0a56fc90 000007fe`f2b31bfe clr!COMCustomAttribute::PopSecurityContextFrame+0xbd
00000000`0a56fd20 000007fe`f2b45020 clr!ManagedThreadBase_NoADTransition+0x3f
00000000`0a56fd80 000007fe`f2ab33de clr!SVR::GCHeap::FinalizerThreadStart+0xb4
00000000`0a56fdc0 00000000`772459ed clr!Thread::intermediateThreadProc+0x7d
00000000`0a56fe80 00000000`7747c541 kernel32!BaseThreadInitThunk+0xd
00000000`0a56feb0 00000000`00000000 ntdll!RtlUserThreadStart+0x1d

0:009> !CLRStack
OS Thread Id: 0x1338 (6)
        Child SP               IP Call Site
000000000b67fcd8 00000000774a12fa [DebuggerU2MCatchHandlerFrame: 000000000b67fcd8] 

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这是一个终结器工作进程，它被RPC响应阻止。在这种情况下，如果线程等待的时间不超过几毫秒（取决于COM服务器响应请求所需的时间），则这是正常的。但是如果我们等待的时间更长，那么您可能需要调查响应数据包发生了什么

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在用户模式下，无法了解线程的滴答数。如果问题是可重新生成的，则您可能希望在运行的系统上使用livekd检查同一线程。这表示终结器被阻止。如果使用COM在Excel和C#之间进行交互，这是一个非常简单的示例。 您有一个Excel模块，该模块被设置为C#的成员变量，然后问题可能会出现，因为该模块的控制权在GC手中，但Excel将等待C#发布该模块。

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简单的方法是，在清除非托管代码之前，先清除C#组件中的所有非托管代码。

心理调试得一分：）不确定我是否听了你的评论，但任何来自你的东西都是好的：）它试图通过TCP通道释放COM对象。COM对象可能位于不同的计算机上。这确实需要心理调试才能弄清楚。您是否反复看到这一点，或者这是一次性的？如果这只是一次性的事情，那么它可能只是很慢而且没有死锁。@SteveJohnson你怎么知道它是TCP通道而不是UDP通道？感谢使用

kb

并检查NtWaitForSingleObject的参数，查看它是否无限等待或超时