.net 高级调试学习（3）异常查看
还是 .net 高级调试学习（2）中的源代码，
运行调试程序到输出异常，windbg自动中断后，
1、执行.loadby sos clr
2、执行!printexception ,（PS ：缩写!pe）看到如下：
Exception object: 0000000002557cb8 Exception type: System.ArgumentException Message: Obj cannot be null InnerException: <none> StackTrace (generated): SP IP Function 000000000025E8D0 000007FE909C0CB5 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.ThrowException(Advanced.NET.Debugging.Chapter3.ObjTypes)+0x95 000000000025E930 000007FE909C065B 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.Main(System.String[])+0x1db StackTraceString: <none> HResult: 80070057
3, 执行!DumpObj 0000000002557cb8 查看具体异常内容
Name: System.ArgumentException MethodTable: 000007feef11ba28 EEClass: 000007feeeb179f8 Size: 168(0xa8) bytes File: C:\windows\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll Fields: MT Field Offset Type VT Attr Value Name 000007feef108548 4000262 8 System.String 0 instance 0000000002559bf8 _className 000007feef128d58 4000263 10 ...ection.MethodBase 0 instance 0000000000000000 _exceptionMethod 000007feef108548 4000264 18 System.String 0 instance 0000000000000000 _exceptionMethodString 000007feef108548 4000265 20 System.String 0 instance 0000000002557d60 _message 000007feef11f9e0 4000266 28 ...tions.IDictionary 0 instance 0000000000000000 _data 000007feef108778 4000267 30 System.Exception 0 instance 0000000000000000 _innerException 000007feef108548 4000268 38 System.String 0 instance 0000000000000000 _helpURL 000007feef108b28 4000269 40 System.Object 0 instance 0000000002557e20 _stackTrace 000007feef108b28 400026a 48 System.Object 0 instance 0000000002557e98 _watsonBuckets 000007feef108548 400026b 50 System.String 0 instance 0000000000000000 _stackTraceString 000007feef108548 400026c 58 System.String 0 instance 0000000000000000 _remoteStackTraceString 000007feef10af70 400026d 88 System.Int32 1 instance 0 _remoteStackIndex 000007feef108b28 400026e 60 System.Object 0 instance 0000000000000000 _dynamicMethods 000007feef10af70 400026f 8c System.Int32 1 instance -2147024809 _HResult 000007feef108548 4000270 68 System.String 0 instance 0000000000000000 _source 000007feef1298a0 4000271 78 System.IntPtr 1 instance 0 _xptrs 000007feef10af70 4000272 90 System.Int32 1 instance -532462766 _xcode 000007feef0d44d0 4000273 80 System.UIntPtr 1 instance 0 _ipForWatsonBuckets 000007feef0fa808 4000274 70 ...ializationManager 0 instance 0000000002557da0 _safeSerializationManager 000007feef108b28 4000261 a8 System.Object 0 shared static s_EDILock >> Domain:Value 00000000000c7840:NotInit << 000007feef108548 400038a 98 System.String 0 instance 0000000000000000 m_paramName
3、也可以使用 !threads 查看所有线程的异常，显示如下：
ThreadCount: 2 UnstartedThread: 0 BackgroundThread: 1 PendingThread: 0 DeadThread: 0 Hosted Runtime: no Lock ID OSID ThreadOBJ State GC Mode GC Alloc Context Domain Count Apt Exception 0 1 2064 000000000011a090 2a020 Preemptive 0000000002562C68:0000000002563FD0 00000000000c7840 0 MTA System.ArgumentException 0000000002557cb8 2 2 1240 000000000011e0c0 2b220 Preemptive 0000000000000000:0000000000000000 00000000000c7840 0 MTA (Finalizer)
书中使用的是kb 命令，查看托管和非托管的调用栈
# RetAddr : Args to Child : Call Site 00 000007fe`f0171f09 : 00000000`00000001 00000000`0025e5e8 00000000`02557cb8 00000000`0025e6b8 : KERNELBASE!RaiseException+0x39 01 000007fe`f0171d10 : 00000000`02556138 ffffffff`fffffffe 00000000`00000000 00000000`00000000 : clr!RaiseTheExceptionInternalOnly+0x2f0 02 000007fe`909c0cb5 : 00000000`70000195 000007fe`908b40c0 00000000`0025eb38 00000000`0025ea00 : clr!IL_Throw+0x111 03 000007fe`909c065b : 00000000`02556cd8 00000000`00000000 00000000`02556b4c 00000000`00000000 : 0x000007fe`909c0cb5 04 000007fe`f0024073 : 00000000`02553470 000007fe`908b40c0 00000000`00000000 00000000`00000000 : 0x000007fe`909c065b 05 000007fe`f0023f25 : 00000000`0025ed08 000007fe`f00b38f1 00000000`00000000 00000000`00000000 : clr!CallDescrWorkerInternal+0x83 06 000007fe`f0024506 : 00000000`00000001 00000000`0025ec80 00000000`0025ec50 00000000`0025ebc8 : clr!CallDescrWorkerWithHandler+0x4e 07 000007fe`f01158e1 : 00000000`0025eb50 00000000`00000000 00000000`00000000 00000000`00000001 : clr!MethodDescCallSite::CallTargetWorker+0xf8 08 000007fe`f0115a7a : 00000000`00000001 00000000`00000000 00000000`00000000 00000000`02553470 : clr!RunMain+0x1e7 09 000007fe`f0115971 : 00000000`00000000 00000000`02551508 00000000`00000000 00000000`00c09a10 : clr!Assembly::ExecuteMainMethod+0xb6 0a 000007fe`f0115be3 : 00000000`0025f6c8 00000000`01140000 00000000`00000000 00000000`00000000 : clr!SystemDomain::ExecuteMainMethod+0x5ea 0b 000007fe`f0115bba : 00000000`01140000 00000000`0025f820 00000000`00000000 000007fe`f0e94998 : clr!ExecuteEXE+0x3f 0c 000007fe`f012805c : ffffffff`ffffffff 00000000`00000000 00000000`00000000 00000000`00000000 : clr!_CorExeMainInternal+0xb2 0d 000007fe`f0e37fd5 : 00000000`00000000 000007fe`00000091 00000000`00000000 00000000`0025f788 : clr!CorExeMain+0x14 0e 000007fe`f0ed5b21 : 00000000`00000000 000007fe`f0128048 00000000`00000000 00000000`00000000 : mscoreei!CorExeMain+0xe0 0f 00000000`76e159cd : 000007fe`f0e30000 00000000`00000000 00000000`00000000 00000000`00000000 : MSCOREE!CorExeMain_Exported+0x57 10 00000000`7704a561 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : KERNEL32!BaseThreadInitThunk+0xd 11 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d
说红色行的Args to Child 的第一个参数就是异常的指针，但是这里明显不是，而是上一行的红色才是，不知是不是.net2和.net4的差异问题，于是我用.net2编译的程序来调试，输出如下：
0:000> !pe c0000005 Exception in C:\Windows\Microsoft.NET\Framework64\v2.0.50727\sos.pe debugger extension. PC: 000007fe`e281f8e4 VA: 00000000`00000000 R/W: 0 Parameter: 00000000`00000000 0:000> !pe Exception object: 00000000025dc6c0 Exception type: System.ArgumentException Message: Obj cannot be null InnerException: <none> StackTrace (generated): SP IP Function 000000000020E9D0 000007FE8DFA0A9F 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.ThrowException(Advanced.NET.Debugging.Chapter3.ObjTypes)+0x8f 000000000020EA10 000007FE8DFA0345 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.Main(System.String[])+0x225 StackTraceString: <none> HResult: 80070057 0:000> kb # RetAddr : Args to Child : Call Site 00 000007fe`ed6a436f : 00000000`002adce0 00000000`002adce0 00000000`0020e780 00000000`002adce0 : KERNELBASE!RaiseException+0x39 01 000007fe`edc808a0 : 00000000`025dc6c0 00000000`00000000 00000000`00000000 00000000`00000001 : mscorwks!RaiseTheExceptionInternalOnly+0x2ff 02 000007fe`8dfa0a9e : 00000000`70000195 000007fe`8de43528 00000000`00000001 00000000`00000000 : mscorwks!JIT_Throw+0x130 03 000007fe`8dfa0344 : 00000000`025daef8 00000000`00000000 00000000`025dae34 00000000`00000000 : 0x000007fe`8dfa0a9e 04 000007fe`ed838f32 : 00000000`025d94c8 00000000`00000000 000007fe`8de43c70 000007fe`ed70f7b9 : 0x000007fe`8dfa0344 05 000007fe`ed6c6683 : 00000000`00000002 00000000`00000016 000007fe`ed5f7690 00000000`00000000 : mscorwks!CallDescrWorker+0x82 06 000007fe`edc18d31 : 00000000`0020ec88 00000000`00000000 00000000`0020ee90 00000000`00000008 : mscorwks!CallDescrWorkerWithHandler+0xd3 07 000007fe`ed783d6f : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`0020f0f0 : mscorwks!MethodDesc::CallDescr+0x2b1 08 000007fe`ed7a7e24 : 00000000`00280000 00000000`00000000 00000000`0000001e 00000000`00000000 : mscorwks!ClassLoader::RunMain+0x22b 09 000007fe`edd061ad : 00000000`0020f6e0 00000000`00000000 00000000`003939e8 00000000`00000200 : mscorwks!Assembly::ExecuteMainMethod+0xbc 0a 000007fe`ed7b52e7 : 00000000`00000000 00000000`00000000 00000000`00000000 000007fe`ed7cf566 : mscorwks!SystemDomain::ExecuteMainMethod+0x47d 0b 000007fe`ed797d9c : ffffffff`fffffffe 00000000`0020d7f0 0000077c`00000000 00000000`00000000 : mscorwks!ExecuteEXE+0x47 0c 000007fe`f0e37fd5 : ffffffff`ffffffff 00000000`002adce0 00000000`00000000 00000000`0020f9a8 : mscorwks!_CorExeMain+0xac 0d 000007fe`f0ed5b21 : 00000000`00000000 000007fe`ed797cf0 00000000`00000000 00000000`00000000 : mscoreei!CorExeMain+0xe0 0e 00000000`76e159cd : 000007fe`f0e30000 00000000`00000000 00000000`00000000 00000000`00000000 : MSCOREE!CorExeMain_Exported+0x57 0f 00000000`7704a561 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : KERNEL32!BaseThreadInitThunk+0xd 10 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d
发现这个是和书上说的是一致的，所以.net2 和net4程序还是有很大差异的。
也可以通过.!dumpstackobjects (缩写!dso) 查看本线程调用栈所有对象实例
OS Thread Id: 0x2064 (0) RSP/REG Object Name 000000000025E630 0000000002557cb8 System.ArgumentException 000000000025E6A8 0000000002557cb8 System.ArgumentException 000000000025E708 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025E710 0000000002557cb8 System.ArgumentException 000000000025E720 0000000002556138 System.Byte[] 000000000025E740 0000000002557cb8 System.ArgumentException 000000000025E750 0000000002557cb8 System.ArgumentException 000000000025E830 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025E838 0000000002557cb8 System.ArgumentException 000000000025E8F0 0000000002553470 System.String[] 000000000025E8F8 0000000002557d60 System.String Obj cannot be null 000000000025E900 0000000002557cb8 System.ArgumentException 000000000025E910 0000000002553470 System.String[] 000000000025E930 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025E950 0000000002557bb8 System.Int32 000000000025E958 00000000025535c0 System.String Greater {0} 000000000025E960 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025E968 0000000002557bb8 System.Int32 000000000025E970 00000000025535c0 System.String Greater {0} 000000000025E978 0000000002557b88 Advanced.NET.Debugging.Chapter3.Comparer`1[[System.Int32, mscorlib]] 000000000025E980 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025E988 0000000002557b88 Advanced.NET.Debugging.Chapter3.Comparer`1[[System.Int32, mscorlib]] 000000000025E990 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes 000000000025EA20 0000000002553470 System.String[] 000000000025EB08 0000000002553470 System.String[] 000000000025EBC8 0000000002553470 System.String[] 000000000025ED98 0000000002553470 System.String[] 000000000025EDC0 0000000002551508 System.AppDomain 000000000025EEA8 0000000002551508 System.AppDomain 000000000025F078 0000000002551508 System.AppDomain 000000000025F370 0000000002551440 System.SharedStatics
作者：碎心炼心
出处：http://www.cnblogs.com/karl-F
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