获取堆栈中异常的堆栈跟踪 [英] Get stack trace of exceptions in heap
问题描述
我使用WinDbg，我想获取异常详细信息.借助！dumpheap -type Exception 命令获取转储中的异常列表，但是如何访问这些异常详细信息?
I use WinDbg and I want to get exception details. With help of !dumpheap -type Exception command get a list of exceptions in dump but how can I access these exception details?
000007fef84e1298 1 160 System.StackOverflowException
000007fef84e1220 1 160 System.OutOfMemoryException
000007fef84e1388 2 320 System.Threading.ThreadAbortException
000007fef84e1038 2 320 System.Exception
000007fef84ec220 6 384 System.UnhandledExceptionEventHandler
000007fef746ea90 10 1760 System.Net.WebException
000007fef84ed780 131 22008 System.ObjectDisposedException
推荐答案
！do
在不使用 -stat 的情况下重新运行！dumpheap 命令以获取对象地址，然后可以使用！do< address> 或！dumpobject< address> .
!do
Rerun the !dumpheap command without -stat to get the object addresses, then you can access the details with !do <address> or !dumpobject <address>.
请注意，即使在简单的hello world应用程序中，每个程序中也存在某些异常(StackOverflowException，OutOfMemoryException和ThreadAbortException).它们是预先分配的，因为在抛出新内存时可能不可用.
Note that some of the Exceptions (StackOverflowException, OutOfMemoryException and ThreadAbortException) exist in every program, even in simple hello world applications. They are pre-allocated, because new memory might not be available at the time of throwing it.
还请注意，不需要引发异常. var ex = new Exception()将创建一个对象，但不会抛出该对象.因此，他们可能没有调用堆栈.
Also note that the exceptions needn't be thrown. A var ex = new Exception() will create an object but not throw it. Thus they may not have a call stack.
这可能是这样的:
0:003> !dumpheap -type NotImplementedException
Address MT Size
000000000278a070 000007feebe03870 136
total 1 objects
Statistics:
MT Count TotalSize Class Name
000007feebe03870 1 136 System.NotImplementedException
Total 1 objects
0:003> !do 000000000278a070
Name: System.NotImplementedException
MethodTable: 000007feebe03870
EEClass: 000007feeb311568
Size: 136(0x88) bytes
(C:\Windows\assembly\GAC_64\mscorlib\2.0.0.0__b77a5c561934e089\mscorlib.dll)
Fields:
MT Field Offset Type VT Attr Value Name
[...]
000007feeb627680 40000bc 40 System.Object 0 instance 000000000278a1b8 _stackTrace
000007feeb627d90 40000bd 48 System.String 0 instance 0000000000000000 _stackTraceString
000007feeb627d90 40000be 50 System.String 0 instance
[...]
如果存在堆栈跟踪，请使用！pe< address> 进行查看.否则，它只是内存中未解析地址的列表.
If the stack trace is present, use !pe <address> to see it. Otherwise it it just a list of unresolved addresses in memory.
0:003> !pe 000000000278a070
Exception object: 000000000278a070
Exception type: System.NotImplementedException
Message: This method does nothing but thorwing this exception.
InnerException: <none>
StackTrace (generated):
SP IP Function
000000000135F2C0 000007FF0017067F MultiException!MultiException.Program.ThrowException2()+0x5f
000000000135F300 000007FEEB4E2BBC mscorlib_ni!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)+0x9c
000000000135F350 000007FEEB57AADE mscorlib_ni!System.Threading.ThreadHelper.ThreadStart()+0x4e
StackTraceString: <none>
HResult: 80004001
由于大量异常，您可能希望使用foreach循环将其自动化:
Due to the high number of exceptions, you might want to automate it with a foreach loop:
.foreach (ex {!dumpheap -type Exception -short}){ !do ${ex} }
！pe
对于当前引发的异常，请使用！threads 确定引发异常的线程.在此示例中，有4个线程具有异常(向右滚动可查看该线程):
!pe
For exceptions that are currently thrown, use !threads to determine the threads that threw an exception. In this example, there are 4 threads with exceptions (scroll right to see it):
0:003> !threads
ThreadCount: 6
UnstartedThread: 0
BackgroundThread: 2
PendingThread: 0
DeadThread: 0
Hosted Runtime: no
PreEmptive Lock
ID OSID ThreadOBJ State GC GC Alloc Context Domain Count APT Exception
0 1 251c 00000000003deff0 201a220 Enabled 00000000027846f8:0000000002785fd0 0000000000382ca0 0 MTA
2 2 2b10 0000000000a88280 b220 Enabled 0000000000000000:0000000000000000 0000000000382ca0 0 MTA (Finalizer)
3 3 255c 0000000000aacac0 b020 Enabled 00000000027862b8:0000000002787fd0 0000000000382ca0 0 MTA System.ArgumentException (0000000002786090)
4 4 2a48 0000000000aad5b0 b020 Enabled 000000000278a290:000000000278bfd0 0000000000382ca0 0 MTA System.NotImplementedException (000000000278a070)
5 5 2e50 0000000000aa20d0 b020 Enabled 0000000002788268:0000000002789fd0 0000000000382ca0 0 MTA System.OutOfMemoryException (0000000002788048)
6 6 d50 0000000000aa2e00 b020 Enabled 000000000278c280:000000000278dfd0 0000000000382ca0 0 MTA System.Threading.ThreadInterruptedException (000000000278c060)
如何在一个转储中包含4个例外?对于读者来说，这可能是一个练习.
在这种情况下，您可以使用〜ns 切换到线程，其中n是第二列中的ID.或者使用〜ne！pe 直接在该线程上运行命令，例如像这样:
In that case, you can switch to the thread using ~ns where n is the ID in the second column. Or use ~ne !pe to run a command directly on that thread, e.g. like this:
0:003> ~3e !pe
Exception object: 0000000002786090
Exception type: System.ArgumentException
Message: This method does not have arguments.
InnerException: <none>
StackTrace (generated):
SP IP Function
000000000112F100 000007FF0017055F MultiException!MultiException.Program.ThrowException1()+0x5f
000000000112F140 000007FEEB4E2BBC mscorlib_ni!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)+0x9c
000000000112F190 000007FEEB57AADE mscorlib_ni!System.Threading.ThreadHelper.ThreadStart()+0x4e
StackTraceString: <none>
HResult: 80070057
0:003> ~4e !pe
Exception object: 000000000278a070
Exception type: System.NotImplementedException
Message: This method does nothing but thorwing this exception.
InnerException: <none>
StackTrace (generated):
SP IP Function
000000000135F2C0 000007FF0017067F MultiException!MultiException.Program.ThrowException2()+0x5f
000000000135F300 000007FEEB4E2BBC mscorlib_ni!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)+0x9c
000000000135F350 000007FEEB57AADE mscorlib_ni!System.Threading.ThreadHelper.ThreadStart()+0x4e
StackTraceString: <none>
HResult: 80004001
这篇关于获取堆栈中异常的堆栈跟踪的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
