如何解决像 OnPropertyChanging
应用程序的某些线程挂起时遇到问题。每次堆栈看起来像这样:
0:135:x86> !dumpstack
OS Thread Id: 0x27f0 (135)
TEB information is not available so a stack size of 0xFFFF is assumed
Current frame: (MethodDesc 722f6954 +0x73 System.Collections.Generic.Dictionary`2[[System.__Canon,mscorlib],[System.__Canon,mscorlib]].FindEntry(System.__Canon))
ChildEBP RetAddr Caller,Callee
16bde720 7263946e (MethodDesc 722f6994 +0xe System.Collections.Generic.Dictionary`2[[System.__Canon,mscorlib]].TryGetValue(System.__Canon,System.__Canon ByRef)),calling (MethodDesc 722f6954 +0 System.Collections.Generic.Dictionary`2[[System.__Canon,mscorlib]].FindEntry(System.__Canon))
16bde72c 6cb61887 (MethodDesc 6ca668a4 +0x1f System.Data.Linq.ChangeTracker+StandardChangeTracker.OnPropertyChanging(System.Object,System.ComponentModel.PropertyChangingEventArgs)),calling (MethodDesc 722f6994 +0 System.Collections.Generic.Dictionary`2[[System.__Canon,System.__Canon ByRef))
16bde744 0456640f (MethodDesc 03b3aa8c +0x17 PonyCompany.CommonWallet.DataContext.CommonWalletTransaction.SendPropertyChanging())
16bde74c 0456acb8 (MethodDesc 03b3a8b0 +0x20 PonyCompany.CommonWallet.DataContext.CommonWalletTransaction.set_ExtId(System.String)) --- '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
16bde75c 0456a88d (MethodDesc 03a6740c +0xb5 PonyCompany.CommonWallet.Manager.Impl.DarkPony.DarkPonyIntegrationManager.ResponseProcessing(PonyCompany.CommonWallet.DataContext.CommonWalletTransaction,PonyCompany.External.Wallet.Domain.BetTransactionResponse)),calling (MethodDesc 03b3a8b0 +0 PonyCompany.CommonWallet.DataContext.CommonWalletTransaction.set_ExtId(System.String))
16bde764 0456a62d (MethodDesc 0105487c +0x9d log4net.Core.LogImpl.DebugFormat(System.String,System.Object,System.Object)),calling 00a576de
0:136:x86> !dumpstack
OS Thread Id: 0x1538 (136)
TEB information is not available so a stack size of 0xFFFF is assumed
Current frame: (MethodDesc 722f6954 +0xd2 System.Collections.Generic.Dictionary`2[[System.__Canon,Callee
1701e730 738095f9 clr!GCInterface::SuppressFinalize+0x25
1701e750 7263946e (MethodDesc 722f6994 +0xe System.Collections.Generic.Dictionary`2[[System.__Canon,mscorlib]].FindEntry(System.__Canon))
1701e75c 6cb61887 (MethodDesc 6ca668a4 +0x1f System.Data.Linq.ChangeTracker+StandardChangeTracker.OnPropertyChanging(System.Object,System.__Canon ByRef))
1701e774 0456640f (MethodDesc 03b3aa8c +0x17 PonyCompany.CommonWallet.DataContext.CommonWalletTransaction.SendPropertyChanging())
1701e77c 04566387 (MethodDesc 03b3a880 +0x17 PonyCompany.CommonWallet.DataContext.CommonWalletTransaction.set_AttemptCount(Int32)) --- '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
0:135:x86> !gle
LastErrorValue: (Win32) 0 (0) - The operation completed successfully.
LastStatusValue: (NTSTATUS) 0 - STATUS_SUCCESS
Wow64 TEB status: 319045632
LastErrorValue: (Win32) 0 (0) - The operation completed successfully.
LastStatusValue: (NTSTATUS) 0 - STATUS_SUCCESS
0:136:x86> !gle
LastErrorValue: (Win32) 0x3e5 (997) - Overlapped I/O operation is in progress.
LastStatusValue: (NTSTATUS) 0 - STATUS_SUCCESS
Wow64 TEB status: 319057920
LastErrorValue: (Win32) 0 (0) - The operation completed successfully.
LastStatusValue: (NTSTATUS) 0 - STATUS_SUCCESS
仅发现少数挂起,持续时间从 40 分钟到 15 小时不等(检测后,应用程序被强行重启)。应用程序的其余部分工作正常,在转储中没有发现锁或异常。线程本身必须处理事务(对外部服务的请求和向数据库写入数据),但在线程挂起的情况下,只有一个线程的处理进度不超过 1-2 个事务,其余线程则是好像在中间被打断了。
在应该修复的显而易见的事情中,这是在处理事务时使用相同的 DataContext
,但即使这样也不能解释线程挂起的原因(至少对我而言)。
Current frame: (MethodDesc 722f6954 +0x73 System.Collections.Generic.Dictionary`2[[System.__Canon,mscorlib]].FindEntry(System.__Canon))
16bde72c 6cb61887 (MethodDesc 6ca668a4 +0x1f
我认为挂起可能是由以下原因引起的:High CPU in .NET app using a static Generic.Dictionary。此外,使用了一般上下文,但即使在这种情况下,也应该在那里进行某种永久记录,原因我没有看到。
实际上,问题是,什么会导致 Linq
处理程序(如上述处理程序)冻结?
调试会话 - logs。我明白没有更完整地沉浸在应用程序、问题和日志的逻辑中 可能没用,但仍然如此。
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