IDebugComPlusSymbolProvider::GetLocalVariablelayout

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Retrieves the layout of local variables for a set of methods.

Syntax

HRESULT GetLocalVariablelayout(  
   ULONG32   ulAppDomainID,  
   GUID      guidModule,  
   ULONG32   cMethods,  
   _mdToken  rgMethodTokens[],  
   IStream** pStreamLayout  
);  

int GetLocalVariablelayout(  
   uint        ulAppDomainID,  
   Guid        guidModule,  
   uint        cMethods,  
   int[]       rgMethodTokens,  
   out IStream pStreamLayout  
);

Parameters

ulAppDomainID
[in] Identifier of the application domain.

guidModule
[in] Unique identifier of the module.

cMethods
[in] Number of method tokens in the rgMethodTokens array.

rgMethodTokens
[in] Array of method tokens.

pStreamLayout
[out] A text stream that contains the variable layout.

Return Value

If successful, returns S_OK; otherwise, returns an error code.

Example

The following example shows how to implement this method for a CDebugSymbolProvider object that exposes the IDebugComPlusSymbolProvider interface.

HRESULT CDebugSymbolProvider::GetLocalVariablelayout(  
    ULONG32 ulAppDomainID,   
    GUID guidModule,   
    ULONG32 cMethods,   
    _mdToken rgMethodTokens[],   
    IStream** ppStreamLayout)  
{  
    HRESULT hr = S_OK;  
  
    METHOD_ENTRY(CDebugSymbolProvider::GetLocalVariablelayout);  
  
    CComPtr<ISymUnmanagedReader> symReader;  
    IfFailRet(GetSymUnmanagedReader(ulAppDomainID, guidModule, (IUnknown **) &symReader));  
    CComPtr<IStream> stream;  
    IfFailRet(CreateStreamOnHGlobal(NULL, true, &stream));  
  
    for (ULONG32 iMethod = 0; iMethod < cMethods; iMethod += 1)  
    {  
        CComPtr<ISymUnmanagedMethod> method;  
        IfFailRet(symReader->GetMethod(rgMethodTokens[iMethod], &method));  
        CComPtr<ISymUnmanagedScope> rootScope;  
        IfFailRet(method->GetRootScope(&rootScope));  
  
        //  
        // Add the method's variables to the stream  
        //  
        IfFailRet(AddScopeToStream(rootScope, 0, stream));  
  
        // do end of method marker  
        ULONG32 depth = 0xFFFFFFFF;  
        ULONG cb = 0;  
        IfFailRet(stream->Write(&depth, sizeof(depth), &cb));  
    }  
  
    LARGE_INTEGER pos;  
    pos.QuadPart = 0;  
    IfFailRet(stream->Seek(pos, STREAM_SEEK_SET, 0));  
    *ppStreamLayout = stream.Detach();  
  
    METHOD_EXIT(CDebugSymbolProvider::GetLocalVariablelayout, hr);  
    return hr;  
}

See Also

IDebugComPlusSymbolProvider