5.WinDbg实操一(查看.net对象)2024-04-07

查看.net对象

测试代码

 0:006> .load C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
0:006> .load C:\Windows\Microsoft.NET\Framework\v4.0.30319\SOS.dll
0:006> .loadby sos clr
0:006> .load D:\WinDbgEx\SOSEx\x86\sosex.dll

 查看堆中的对象类型和大小
0:006> !DumpHeap -stat
Statistics:
      MT    Count    TotalSize Class Name
7b3cd594        1           12 System.Collections.Generic.GenericEqualityComparer`1[[System.String, mscorlib]]
7b3ccabc        1           12 System.Security.HostSecurityManager
7b3cc050        1           12 System.Collections.Generic.ObjectEqualityComparer`1[[System.Type, mscorlib]]
7b3cca40        1           16 System.Security.Policy.Evidence+EvidenceLockHolder
7b3c9fd8        1           16 System.Security.Policy.AssemblyEvidenceFactory
7b38d8b8        1           16 System.IO.TextReader+SyncTextReader
7b3c9f20        1           20 Microsoft.Win32.SafeHandles.SafePEFileHandle
7b3612f4        1           20 System.IO.Stream+NullStream
7b360ecc        1           20 Microsoft.Win32.SafeHandles.SafeFileMappingHandle
7b360e7c        1           20 Microsoft.Win32.SafeHandles.SafeViewOfFileHandle
7b360de8        1           20 System.Text.InternalEncoderBestFitFallback
7b3cd28c        1           24 System.Version
7b360fa8        1           24 System.IO.TextWriter+SyncTextWriter
7b360e38        1           24 System.Text.InternalDecoderBestFitFallback
011d4f0c        1           24 System.Collections.Generic.List`1[[Demo1_ObjectGc.A, Demo1_ObjectGc]]
7b3cceb4        1           28 System.Text.UTF8Encoding+UTF8EncodingSealed
7b3caeec        1           28 System.SharedStatics
7b38f4c8        1           28 System.Text.DBCSCodePageEncoding+DBCSDecoder
7b3610e4        1           28 Microsoft.Win32.Win32Native+InputRecord
7b360a94        1           28 System.Text.EncoderNLS
7b3ccd54        2           32 System.Text.DecoderReplacementFallback
7b3ccd04        2           32 System.Text.EncoderReplacementFallback
7b3ccb30        1           32 System.Text.UnicodeEncoding
7b3c9f80        1           32 System.Security.Policy.PEFileEvidenceFactory
7b3cb60c        1           36 System.Security.PermissionSet
7b3cce28        2           40 Microsoft.Win32.SafeHandles.SafeFileHandle
7b3cb588        1           40 System.Security.Policy.Evidence
7b3cc91c        1           44 System.Threading.ReaderWriterLock
7b3676d4        1           44 System.Text.InternalEncoderBestFitFallbackBuffer
7b3cd3cc        1           48 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[System.Globalization.CultureData, mscorlib]]
7b3cd044        1           48 System.Collections.Hashtable+bucket[]
7b3cc54c        4           48 System.Int32
7b3cb760        1           48 System.Collections.Generic.Dictionary`2[[System.Type, mscorlib],[System.Security.Policy.EvidenceTypeDescriptor, mscorlib]]
7b3c9e80        4           48 System.UInt16
7b3ccff4        1           52 System.Collections.Hashtable
7b3cc098        1           52 System.Type[]
7b3cb52c        1           52 System.Threading.Thread
7b3cd378        2           56 System.Text.StringBuilder
7b3cc964        2           56 System.Reflection.RuntimeAssembly
7b36113c        2           56 System.IO.__ConsoleStream
7b3cdab4        1           60 System.IO.StreamWriter
7b3cd6c8        1           60 System.Collections.Generic.Dictionary`2+Entry[[System.String, mscorlib],[System.Globalization.CultureData, mscorlib]][]
7b3d33ac        1           64 System.IO.StreamReader
7b3cb2b0        1           68 System.AppDomainSetup
7b3cd0d4        1           72 System.IO.UnmanagedMemoryStream
7b38f93c        1           76 System.Text.DBCSCodePageEncoding
7b3cd338        1           84 System.Globalization.CalendarData
7b3cadd4        1           84 System.ExecutionEngineException
7b3cad90        1           84 System.StackOverflowException
7b3cad48        1           84 System.OutOfMemoryException
7b3cacf4        1           84 System.Exception
7b3cae50        8           96 System.Object
7b3cd2f4        1          104 System.Globalization.CalendarData[]
7b3caf2c        1          112 System.AppDomain
7b3cd80c        1          132 System.Globalization.NumberFormatInfo
7b3cd1a0        2          144 System.Globalization.CultureInfo
7b3cae18        2          168 System.Threading.ThreadAbortException
012f7338       44          456      Free
7b3cc778        3          468 System.Collections.Generic.Dictionary`2+Entry[[System.Type, mscorlib],[System.Security.Policy.EvidenceTypeDescriptor, mscorlib]][]
7b3cc510       11          564 System.Int32[]
7b3cb490       18          608 System.String[]
7b3cd258        2          616 System.Globalization.CultureData
7b3cbc4c       26          728 System.RuntimeType
7b3cdd04        3          806 System.Byte[]
7b3cb37c       10         2984 System.Char[]
7b3cac04      166         5606 System.String
7b3caea4        6        18016 System.Object[]
011d5400    10000       120000 Demo1_ObjectGc.B
011d4ebc    10000       120000 Demo1_ObjectGc.A
011d5300       14       131224 Demo1_ObjectGc.A[]
Total 20381 objects

 根据类型查找存活对象
0:006> !DumpHeap -live -mt 011d4ebc
 Address       MT     Size
030e23fc 011d4ebc       12     
030e2430 011d4ebc       12     
030e2448 011d4ebc       12     
0313ce38 011d4ebc       12     
0313ce50 011d4ebc       12     
0313ce68 011d4ebc       12     
0313ce80 011d4ebc       12     
0313ce98 011d4ebc       12     
0313ceb0 011d4ebc       12     
0313cec8 011d4ebc       12     
0313cee0 011d4ebc       12     
0313cef8 011d4ebc       12     
0313cf10 011d4ebc       12     
0313cf28 011d4ebc       12     
0313cf40 011d4ebc       12     
0313cf58 011d4ebc       12     
0313cf70 011d4ebc       12     
0313cf88 011d4ebc       12     
 
Statistics:
      MT    Count    TotalSize Class Name
011d4ebc    10000       120000 Demo1_ObjectGc.A
Total 10000 objects

 查看某个对象找出GCRoot
0:006> !GCRoot 0313cf88
HandleTable:
    011b13ec (pinned handle)
    -> 040e3670 System.Object[]
    -> 030e23b4 System.Collections.Generic.List`1[[Demo1_ObjectGc.A, Demo1_ObjectGc]]
    -> 031225f0 Demo1_ObjectGc.A[]
    -> 0313cf88 Demo1_ObjectGc.A
 
Found 1 unique roots (run '!GCRoot -all' to see all roots).

 查看对象
0:006> !DumpObj 0313cf88
Name:        Demo1_ObjectGc.A
MethodTable: 011d4ebc
EEClass:     011d1344
Size:        12(0xc) bytes
File:        E:\workspcace\WinDbg\WinDbgStudy\Demo1_ObjectGc\bin\Debug\Demo1_ObjectGc.exe
Fields:
      MT    Field   Offset                 Type VT     Attr    Value Name
011d5400  4000002        4     Demo1_ObjectGc.B  0 instance 0313cf94 <ValueB>k__BackingField
 
0:006> !do 0313cf94 
Name:        Demo1_ObjectGc.B
MethodTable: 011d5400
EEClass:     011d14c8
Size:        12(0xc) bytes
File:        E:\workspcace\WinDbg\WinDbgStudy\Demo1_ObjectGc\bin\Debug\Demo1_ObjectGc.exe
Fields:
      MT    Field   Offset                 Type VT     Attr    Value Name
7b3cc54c  4000003        4         System.Int32  1 instance     9999 <Value>k__BackingField

posted @ 2024-04-07 12:31 leafroc 阅读(92) 评论(0) 编辑收藏举报

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	0:006> .load C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
	0:006> .load C:\Windows\Microsoft.NET\Framework\v4.0.30319\SOS.dll
	0:006> .loadby sos clr
	0:006> .load D:\WinDbgEx\SOSEx\x86\sosex.dll

	查看堆中的对象类型和大小
	0:006> !DumpHeap -stat
	Statistics:
	MT Count TotalSize Class Name
	7b3cd594 1 12 System.Collections.Generic.GenericEqualityComparer`1[[System.String, mscorlib]]
	7b3ccabc 1 12 System.Security.HostSecurityManager
	7b3cc050 1 12 System.Collections.Generic.ObjectEqualityComparer`1[[System.Type, mscorlib]]
	7b3cca40 1 16 System.Security.Policy.Evidence+EvidenceLockHolder
	7b3c9fd8 1 16 System.Security.Policy.AssemblyEvidenceFactory
	7b38d8b8 1 16 System.IO.TextReader+SyncTextReader
	7b3c9f20 1 20 Microsoft.Win32.SafeHandles.SafePEFileHandle
	7b3612f4 1 20 System.IO.Stream+NullStream
	7b360ecc 1 20 Microsoft.Win32.SafeHandles.SafeFileMappingHandle
	7b360e7c 1 20 Microsoft.Win32.SafeHandles.SafeViewOfFileHandle
	7b360de8 1 20 System.Text.InternalEncoderBestFitFallback
	7b3cd28c 1 24 System.Version
	7b360fa8 1 24 System.IO.TextWriter+SyncTextWriter
	7b360e38 1 24 System.Text.InternalDecoderBestFitFallback
	011d4f0c 1 24 System.Collections.Generic.List`1[[Demo1_ObjectGc.A, Demo1_ObjectGc]]
	7b3cceb4 1 28 System.Text.UTF8Encoding+UTF8EncodingSealed
	7b3caeec 1 28 System.SharedStatics
	7b38f4c8 1 28 System.Text.DBCSCodePageEncoding+DBCSDecoder
	7b3610e4 1 28 Microsoft.Win32.Win32Native+InputRecord
	7b360a94 1 28 System.Text.EncoderNLS
	7b3ccd54 2 32 System.Text.DecoderReplacementFallback
	7b3ccd04 2 32 System.Text.EncoderReplacementFallback
	7b3ccb30 1 32 System.Text.UnicodeEncoding
	7b3c9f80 1 32 System.Security.Policy.PEFileEvidenceFactory
	7b3cb60c 1 36 System.Security.PermissionSet
	7b3cce28 2 40 Microsoft.Win32.SafeHandles.SafeFileHandle
	7b3cb588 1 40 System.Security.Policy.Evidence
	7b3cc91c 1 44 System.Threading.ReaderWriterLock
	7b3676d4 1 44 System.Text.InternalEncoderBestFitFallbackBuffer
	7b3cd3cc 1 48 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[System.Globalization.CultureData, mscorlib]]
	7b3cd044 1 48 System.Collections.Hashtable+bucket[]
	7b3cc54c 4 48 System.Int32
	7b3cb760 1 48 System.Collections.Generic.Dictionary`2[[System.Type, mscorlib],[System.Security.Policy.EvidenceTypeDescriptor, mscorlib]]
	7b3c9e80 4 48 System.UInt16
	7b3ccff4 1 52 System.Collections.Hashtable
	7b3cc098 1 52 System.Type[]
	7b3cb52c 1 52 System.Threading.Thread
	7b3cd378 2 56 System.Text.StringBuilder
	7b3cc964 2 56 System.Reflection.RuntimeAssembly
	7b36113c 2 56 System.IO.__ConsoleStream
	7b3cdab4 1 60 System.IO.StreamWriter
	7b3cd6c8 1 60 System.Collections.Generic.Dictionary`2+Entry[[System.String, mscorlib],[System.Globalization.CultureData, mscorlib]][]
	7b3d33ac 1 64 System.IO.StreamReader
	7b3cb2b0 1 68 System.AppDomainSetup
	7b3cd0d4 1 72 System.IO.UnmanagedMemoryStream
	7b38f93c 1 76 System.Text.DBCSCodePageEncoding
	7b3cd338 1 84 System.Globalization.CalendarData
	7b3cadd4 1 84 System.ExecutionEngineException
	7b3cad90 1 84 System.StackOverflowException
	7b3cad48 1 84 System.OutOfMemoryException
	7b3cacf4 1 84 System.Exception
	7b3cae50 8 96 System.Object
	7b3cd2f4 1 104 System.Globalization.CalendarData[]
	7b3caf2c 1 112 System.AppDomain
	7b3cd80c 1 132 System.Globalization.NumberFormatInfo
	7b3cd1a0 2 144 System.Globalization.CultureInfo
	7b3cae18 2 168 System.Threading.ThreadAbortException
	012f7338 44 456 Free
	7b3cc778 3 468 System.Collections.Generic.Dictionary`2+Entry[[System.Type, mscorlib],[System.Security.Policy.EvidenceTypeDescriptor, mscorlib]][]
	7b3cc510 11 564 System.Int32[]
	7b3cb490 18 608 System.String[]
	7b3cd258 2 616 System.Globalization.CultureData
	7b3cbc4c 26 728 System.RuntimeType
	7b3cdd04 3 806 System.Byte[]
	7b3cb37c 10 2984 System.Char[]
	7b3cac04 166 5606 System.String
	7b3caea4 6 18016 System.Object[]
	011d5400 10000 120000 Demo1_ObjectGc.B
	011d4ebc 10000 120000 Demo1_ObjectGc.A
	011d5300 14 131224 Demo1_ObjectGc.A[]
	Total 20381 objects

	根据类型查找存活对象
	0:006> !DumpHeap -live -mt 011d4ebc
	Address MT Size
	030e23fc 011d4ebc 12
	030e2430 011d4ebc 12
	030e2448 011d4ebc 12
	0313ce38 011d4ebc 12
	0313ce50 011d4ebc 12
	0313ce68 011d4ebc 12
	0313ce80 011d4ebc 12
	0313ce98 011d4ebc 12
	0313ceb0 011d4ebc 12
	0313cec8 011d4ebc 12
	0313cee0 011d4ebc 12
	0313cef8 011d4ebc 12
	0313cf10 011d4ebc 12
	0313cf28 011d4ebc 12
	0313cf40 011d4ebc 12
	0313cf58 011d4ebc 12
	0313cf70 011d4ebc 12
	0313cf88 011d4ebc 12

	Statistics:
	MT Count TotalSize Class Name
	011d4ebc 10000 120000 Demo1_ObjectGc.A
	Total 10000 objects

	查看某个对象找出GCRoot
	0:006> !GCRoot 0313cf88
	HandleTable:
	011b13ec (pinned handle)
	-> 040e3670 System.Object[]
	-> 030e23b4 System.Collections.Generic.List`1[[Demo1_ObjectGc.A, Demo1_ObjectGc]]
	-> 031225f0 Demo1_ObjectGc.A[]
	-> 0313cf88 Demo1_ObjectGc.A

	Found 1 unique roots (run '!GCRoot -all' to see all roots).

	查看对象
	0:006> !DumpObj 0313cf88
	Name: Demo1_ObjectGc.A
	MethodTable: 011d4ebc
	EEClass: 011d1344
	Size: 12(0xc) bytes
	File: E:\workspcace\WinDbg\WinDbgStudy\Demo1_ObjectGc\bin\Debug\Demo1_ObjectGc.exe
	Fields:
	MT Field Offset Type VT Attr Value Name
	011d5400 4000002 4 Demo1_ObjectGc.B 0 instance 0313cf94 <ValueB>k__BackingField

	0:006> !do 0313cf94
	Name: Demo1_ObjectGc.B
	MethodTable: 011d5400
	EEClass: 011d14c8
	Size: 12(0xc) bytes
	File: E:\workspcace\WinDbg\WinDbgStudy\Demo1_ObjectGc\bin\Debug\Demo1_ObjectGc.exe
	Fields:
	MT Field Offset Type VT Attr Value Name
	7b3cc54c 4000003 4 System.Int32 1 instance 9999 <Value>k__BackingField