internal ReferenceSizeInfo(ref T t) : base()
{
BaseInstance = Unsafe.BaseInstanceSize <T>();
Heap = Unsafe.HeapSize(ref t);
BaseFieldsSize = Unsafe.BaseFieldsSize <T>();
}
public void Test()
{
string s = "foo";
var mt = Runtime.ReadMethodTable(ref s);
// Name: System.String
// MethodTable: 00007fff1c1a6830
// EEClass: 00007fff1ba86cb8
// Size: 32(0x20) bytes
// File: C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
// String: foo
// Fields:
// MT Field Offset Type VT Attr Value Name
// 00007fff1c1a9180 4000273 8 System.Int32 1 instance 3 m_stringLength
// 00007fff1c1a79e8 4000274 c System.Char 1 instance 66 m_firstChar
// 00007fff1c1a6830 4000278 a0 System.String 0 shared static Empty
// >> Domain:Value 0000027796286260:NotInit <<
Debug.Assert(mt == (MethodTable *)0x00007fff1c1a6830);
Debug.Assert(mt->EEClass == (void *)0x00007fff1ba86cb8);
Debug.Assert(Unsafe.HeapSize(ref s) == 32);
// Note: SOS's BaseSize is wrong here
// EEClass: 00007fff1ba86cb8
// Module: 00007fff1ba81000
// Name: System.String
// mdToken: 0000000002000073
// File: C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
// BaseSize: 0x18
// ComponentSize: 0x2
// Slots in VTable: 195
// Number of IFaces in IFaceMap: 7
//Debug.Assert(mt->BaseSize == 0x18);
Debug.Assert(mt->ComponentSize == 0x2);
Debug.Assert(mt->NumInterfaces == 7);
// Class Name: System.String
// mdToken: 0000000002000073
// File: C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
// Parent Class: 00007fff1ba86d60
// Module: 00007fff1ba81000
// Method Table: 00007fff1c1a6830
// Vtable Slots: 1b
// Total Method Slots: 1d
// Class Attributes: 102101
// Transparency: Transparent
// NumInstanceFields: 2
// NumStaticFields: 1
// MT Field Offset Type VT Attr Value Name
// 00007fff1c1a9180 4000273 8 System.Int32 1 instance m_stringLength
// 00007fff1c1a79e8 4000274 c System.Char 1 instance m_firstChar
// 00007fff1c1a6830 4000278 a0 System.String 0 shared static Empty
// >> Domain:Value 0000020aecb433a0:NotInit <<
Debug.Assert(mt->Module == (void *)0x00007fff1ba81000);
Debug.Assert(mt->EEClass->Attributes == 0x102101);
// 26 = string's base size
// 6 = (sizeof(char) + sizeof(int))
// 26 - 6 = 20
Debug.Assert(mt->EEClass->BaseSizePadding == 20);
Debug.Assert(Unsafe.BaseFieldsSize <string>() == 6);
Debug.Assert(Unsafe.BaseInstanceSize <string>() == 26);
// Name: C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll
// Attributes: PEFile
// Assembly: 0000020aecb938e0
// LoaderHeap: 0000000000000000
// TypeDefToMethodTableMap: 00007fff1cdf6ca4
// TypeRefToMethodTableMap: 00007fff1bde9f18
// MethodDefToDescMap: 00007fff1cdf925c
// FieldDefToDescMap: 00007fff1bde9f78
// MemberRefToDescMap: 0000000000000000
// FileReferencesMap: 00007fff1ba89720
// AssemblyReferencesMap: 00007fff1ba89750
// MetaData start address: 00007fff1c32986c (2834728 bytes)
}