为什么psscor4命令不会运行

Question

出于某种原因，我加载psscor4后无法运行任何命令。我从MS网站下载了x64的psscor4，并把它放在windbg所在的同一文件夹中。在加载psscor4之前，我可以毫无问题地运行sos命令。

0:003> .loadby sos clr

0:003> lmvm clr
start             end                 module name
00007ffa`35630000 00007ffa`35fc8000   clr        (deferred)             
    Image path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
    Image name: clr.dll
    Timestamp:        Wed Nov 27 19:25:30 2013 (52968D7A)
    CheckSum:         00996ED8
    ImageSize:        00998000
    File version:     4.0.30319.34011
    Product version:  4.0.30319.34011
    File flags:       8 (Mask 3F) Private
    File OS:          4 Unknown Win32
    File type:        2.0 Dll
    File date:        00000000.00000000
    Translations:     0409.04b0
    CompanyName:      Microsoft Corporation
    ProductName:      Microsoft® .NET Framework
    InternalName:     clr.dll
    OriginalFilename: clr.dll
    ProductVersion:   4.0.30319.34011
    FileVersion:      4.0.30319.34011 built by: FX45W81RTMGDR
    PrivateBuild:     DDBLD109
    FileDescription:  Microsoft .NET Runtime Common Language Runtime - WorkStation
    LegalCopyright:   © Microsoft Corporation.  All rights reserved.
    Comments:         Flavor=Retail

    0:003> !DumpHeap -type ConsoleApplication1.Dummy
         Address               MT     Size
0000000002022f58 00007ff9d5ec4130       40     

Statistics:
              MT    Count    TotalSize Class Name
00007ff9d5ec4130        1           40 ConsoleApplication1.Dummy
Total 1 objects

0:003> !DumpHeap -mt 00007ff9d5ec4130
         Address               MT     Size
0000000002022f58 00007ff9d5ec4130       40     

Statistics:
              MT    Count    TotalSize Class Name
00007ff9d5ec4130        1           40 ConsoleApplication1.Dummy
Total 1 objects

0:003> !do 0000000002022f58 
Name:        ConsoleApplication1.Dummy
MethodTable: 00007ff9d5ec4130
EEClass:     00007ff9d5fd23b8
Size:        40(0x28) bytes
File:        c:\Projects\ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe
Fields:
              MT    Field   Offset                 Type VT     Attr            Value Name
00007ffa34635740  4000001        8        System.Byte[]  0 instance 0000000012029740 bytes
00007ffa34632838  4000002       18         System.Int32  1 instance                0 <ID>k__BackingField
00007ffa3464d5b8  4000003       10        System.Double  1 instance 0.000000 <SomeThing>k__BackingField

加载psscor4后，我无法运行任何sos命令

0:003> .load psscor4
0:003> !DumpHeap -type ConsoleApplication1.Dummy
The garbage collector data structures are not in a valid state for traversal.
It is either in the "plan phase," where objects are being moved around, or
we are at the initialization or shutdown of the gc heap. Commands related to 
displaying, finding or traversing objects as well as gc heap segments may not 
work properly. !dumpheap and !verifyheap may incorrectly complain of heap 
consistency errors.
Error requesting GC Heap data
Unable to build snapshot of the garbage collector state

0:003> !DumpHeap -mt 00007ff9d5ec4130
The garbage collector data structures are not in a valid state for traversal.
It is either in the "plan phase," where objects are being moved around, or
we are at the initialization or shutdown of the gc heap. Commands related to 
displaying, finding or traversing objects as well as gc heap segments may not 
work properly. !dumpheap and !verifyheap may incorrectly complain of heap 
consistency errors.
Error requesting GC Heap data
Unable to build snapshot of the garbage collector state

0:003> !do 0000000002022f58 
<Note: this object has an invalid CLASS field>
Invalid object

我可以在为sos添加前缀后运行这些命令。所以！sos.do工作正常。但问题是我也无法运行任何psscor4特定命令。知道什么可能是错的吗？我认为psscor4输出的错误具有误导性，因为当我将windbg附加到此过程时，我不认为任何GC正在发生。

修改 以下是用于.NET 4.0的配置。那么哪一个可以和psscor4一起使用呢？

Answer 1

PSSCOR4

你有.NET 4.0.30319.34011，实际上是.NET 4.5。 PSSCOR4来自2011-02-01，尚未用于.NET 4.5。它只适用于.NET 4.0，所以它对你的情况毫无用处。

由于.NET 4.5是.NET 4的就地更新，因此将目标框架设置为4.0并没有帮助。它取决于运行应用程序的PC上实际安装的.NET版本。

多个扩展

某些扩展程序可能与其他扩展程序具有相同的命令。您可以通过

找到PSSCOR 4的可用命令

0:000> .extmatch /e *psscor4* *

从列表中可以看出，PSSCOR4是SOS的超集，并且具有SOS的所有命令以及更多命令。

命名冲突可以通过两种方式解决：

1. 使用.setdll <dllname>
定义默认DLL
2. 明确使用!<extension>.<command>

执行!sos.do您选择的方法2。

Answer 2

转储正在运行CLR v4.5（4.0.30319.34011）。 Psscor4不适用于.NET 4.5 +。