How to find all the arguments name and its values from COR_PRF_FUNCTION_ARGUMENT_INFO

Question

I using ICorProfilerCallback to profile my application. In the function enter method I'm able to find the function name. But how should I find the function attributes and its values from the struct COR_PRF_FUNCTION_ARGUMENT_INFO

Answer 1

You cant, you need the FunctionID:

* Pass the FunctionID into GetTokenAndMetaDataFromFunction to get the method metadata token and IMetaDataImport instance.

* Pass the method metadata token and parameter index into GetParamForMethodIndex to get the parameter metadata token. (if the parameter has no name or attributes, then this could fail with CLDB_E_RECORD_NOTFOUND.)

* Pass the parameter metadata token into GetParamProps to get the parameter name and non-custom attributes.

* Pass the parameter metadata token into EnumCustomAttributes to get the metadata tokens of the custom attributes.

* Pass the custom attribute metadata tokens into GetCustomAttributeProps to get the details of the custom attribute.

Answer 2

Thanks.

I don't have much experience in c++. Below is the code what I tried. The method GetParamForMethodIndex is always fails.

IMetaDataImport* metaDataImport = NULL;
mdMethodDef methodToken = NULL;
HRESULT result = _corProfilerInfo2->GetTokenAndMetaDataFromFunction(functionId, IID_IMetaDataImport, (LPUNKNOWN *) &metaDataImport, &methodToken); 
if(SUCCEEDED(result)) {
	ULONG ulong = 0;
	mdParamDef* parametersTokens = NULL;
	result = metaDataImport->GetParamForMethodIndex(methodToken, ulong, parametersTokens);
	
	// It never enters in to success. It always fails
	if(SUCCEEDED(result)) {
	}
}

I'm not sure what I'm missing.

Answer 3

what is the value of result?