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ICorDebugVariableHome Interface

  • Bài viết

Represents a local variable or argument of a function.

Methods

Method Description
GetArgumentIndex Method Gets the index of a function argument.
GetCode Method Gets the "ICorDebugCode" instance that contains this ICorDebugVariableHome object.
GetLiveRange Method Gets the native range over which this variable is live.
GetLocationType Method Gets the type of the variable's native location.
GetOffset Method Gets the offset from the base register for a variable.
GetRegister Method Gets the register that contains a variable with a location type of VLT_REGISTER, and the base register for a variable with a location type of VLT_REGISTER_RELATIVE.
GetSlotIndex Method Gets the managed slot-index of a local variable.

Example

The following code fragment uses the ICorDebugCode4 object named pCode4.

ICorDebugCode4 *pCode4 = NULL;  
pCode->QueryInterface(IID_ICorDebugCode4, &pCode4);  
  
ICorDebugVariableEnum *pVarLocEnum = NULL;  
pCode4->EnumerateVariableHomes(&pVarLocEnum);  
  
// retrieve local variables and arguments  
ULONG celt = 0;  
pVarLocEnum->GetCount(&celt);  
ICorDebugVariableHome **homes = new ICorDebugVariableHome *[celt];  
ULONG celtFetched = 0;  
pVarLocEnum->Next(celt, homes, &celtFetched);  
  
for (int i = 0; i < celtFetched; i++)  
{  
    VariableLocationType locType = VLT_INVALID;  
    homes[i].GetLocationType(&locType);  
    switch (locType)  
    {  
    case VLT_REGISTER:  
        CorDebugRegister register = 0;  
        locals[i].GetRegister(&register);  
        // now we know which register it is in  
        break;  
    case VLT_REGISTER_RELATIVE:  
        CorDebugRegister baseRegister = 0;  
        LONG offset = 0;  
        locals[i].GetRegister(&register);  
        locals[i].GetOffset(&offset);  
        // now we know the register-relative offset  
        break;  
    case VLT_INVALID:  
        // handle case where we can't access the location  
        break;  
    }  
}

Requirements

Platforms: See System Requirements.

Header: CorDebug.idl, CorDebug.h

Library: CorGuids.lib

.NET Framework Versions: Available since 4.6.2

See also