View Regex pattern string using windbg
0:004> !threads
*********************************************************************
* Symbols can not be loaded because symbol path is not initialized. *
* *
* The Symbol Path can be set by: *
* using the _NT_SYMBOL_PATH environment variable. *
* using the -y <symbol_path> argument when starting the debugger. *
* using .sympath and .sympath+ *
*********************************************************************
PDB symbol for clr.dll not loaded
ThreadCount: 2
UnstartedThread: 0
BackgroundThread: 1
PendingThread: 0
DeadThread: 0
Hosted Runtime: no
PreEmptive GC Alloc Lock
ID OSID ThreadOBJ State GC Context Domain Count APT Exception
0 1 1774 0066c328 a020 Enabled 021e5614:021e5fe8 00665b58 0 MTA
2 2 17bc 00678150 b220 Enabled 00000000:00000000 00665b58 0 MTA (Finalizer)
0:004> ~0s
*** WARNING: Unable to verify checksum for C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\b79870f56fb884856832833fe760f671\mscorlib.ni.dll
*** ERROR: Module load completed but symbols could not be loaded for C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\b79870f56fb884856832833fe760f671\mscorlib.ni.dll
eax=00000001 ebx=00000000 ecx=00000000 edx=00000000 esi=0015ec0c edi=0015eb88
eip=75947468 esp=0015eafc ebp=0015eb1c iopl=0 nv up ei pl nz na po nc
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000202
KERNEL32!VDMConsoleOperation+0x246:
75947468 83c404 add esp,4
0:000> !DumpHeap -type Regex
….
Statistics:
MT Count TotalSize Class Name
62b361b4 3 36 System.Text.RegularExpressions.RegexCharClass+SingleRangeComparer
62b36188 3 36 System.Text.RegularExpressions.RegexCharClass+SingleRange
62b362f8 3 48 System.Text.RegularExpressions.RegexFC
62b3611c 3 72 System.Collections.Generic.List`1[[System.Text.RegularExpressions.RegexCharClass+SingleRange, System]]
62b35e4c 3 72 System.Collections.Generic.List`1[[System.Text.RegularExpressions.RegexOptions, System]]
62b35cf8 3 72 System.Text.RegularExpressions.RegexCharClass
62b362bc 3 84 System.Text.RegularExpressions.RegexFCD
62b364fc 6 96 System.Text.RegularExpressions.RegexPrefix
62b35ff4 4 96 System.Text.RegularExpressions.RegexOptions[]
62b36210 3 108 System.Text.RegularExpressions.RegexTree
62b35a0c 3 120 System.Text.RegularExpressions.RegexBoyerMoore
62b36284 3 132 System.Text.RegularExpressions.RegexCode
62b36248 3 144 System.Text.RegularExpressions.RegexWriter
62b1e5b4 3 156 System.Text.RegularExpressions.Regex
62b35e10 3 252 System.Text.RegularExpressions.RegexParser
62b36540 3 312 System.Text.RegularExpressions.RegexInterpreter
62b360a4 18 432 System.Collections.Generic.List`1[[System.Text.RegularExpressions.RegexNode, System]]
62b35d30 1 1140 System.Text.RegularExpressions.RegexCharClass+LowerCaseMapping[]
62b36040 29 1160 System.Text.RegularExpressions.RegexNode
Total 100 objects
0:000> !DumpHeap -mt 62b1e5b4
Address MT Size
021db2fc 62b1e5b4 52
021e1390 62b1e5b4 52
021e2248 62b1e5b4 52
total 0 objects
Statistics:
MT Count TotalSize Class Name
62b1e5b4 3 156 System.Text.RegularExpressions.Regex
Total 3 objects
0:000> !DumpObj 021db2fc
Name: System.Text.RegularExpressions.Regex
MethodTable: 62b1e5b4
EEClass: 6295bb8c
Size: 52(0x34) bytes
File: C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll
Fields:
MT Field Offset Type VT Attr Value Name
6356f9ac 4000001 4 System.String 0 instance 021db210 pattern
62b3489c 4000002 8 ...egexRunnerFactory 0 instance 00000000 factory
62b2dd68 4000003 24 System.Int32 1 instance 0 roptions
6357537c 4000004 c ...ections.Hashtable 0 instance 00000000 caps
6357537c 4000005 10 ...ections.Hashtable 0 instance 021e0344 capnames
63526c28 4000006 14 System.Object[] 0 instance 021e0b70 capslist
63572978 4000007 28 System.Int32 1 instance 2 capsize
62b35c0c 4000008 18 ...xclusiveReference 0 instance 021e135c runnerref
62b35c48 4000009 1c ...s.SharedReference 0 instance 021e1370 replref
62b36284 400000a 20 ...essions.RegexCode 0 instance 021e131c code
6357662c 400000b 2c System.Boolean 1 instance 1 refsInitialized
62b35da8 400000c 4 ...deEntry, System]] 0 static 021db8a0 livecode
63572978 400000d 864 System.Int32 1 static 15 cacheSize
0:000> !DumpObj 021db210
Name: System.String
MethodTable: 6356f9ac
EEClass: 632a8bb0
Size: 50(0x32) bytes
File: C:\Windows\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
String: (?<url>href=".+?")
Fields:
MT Field Offset Type VT Attr Value Name
63572978 40000ed 4 System.Int32 1 instance 18 m_stringLength
63571dc8 40000ee 8 System.Char 1 instance 28 m_firstChar
6356f9ac 40000ef 8 System.String 0 shared static Empty
>> Domain:Value 00665b58:021d1228 <<
-----------------------------
命令的备注：
0:004> !threads #列出所有托管的线程
0:004> ~0s #转到0号托管进程(~0s)，其中0:004中的4表示当前线程ID为4
0:000> !DumpHeap -type Regex #使用!DumpHeap –type 查看Regex的Method Table。
!DumpHeap -mt 62b1e5b4 #查看Method Table所关联的Object
!DumpObj 021db2fc #查看Regex对象的内容
!DumpObj 021db210 #由于String是引用类型，Value显示的是其引用值，再次查看该引用对象(String)的内容
