Photoshop create histogram getting document information in automation plugins

Using big files (more than 5Gb) to get document information to know number of layers or selected layes in a automation, Photoshop spend a lot of time creatiing histograms.

Execution this short code on a big file, Photoshop starts create histograms.

SPErr error = kSPNoError;

PIActionDescriptor result = NULL;

PIActionReference reference = NULL;

Boolean hasKey;

error = sPSActionReference->Make(&reference);

if (error) goto returnError;

error = sPSActionReference->PutEnumerated(reference, classDocument,  typeOrdinal, enumTarget);

if (error) goto returnError;

sPSActionControl->Get(&result, reference);

if (result != NULL)

{

//....

}

returnError:

if (result != NULL) sPSActionDescriptor->Free(result);

if (reference != NULL) sPSActionReference->Free(reference);

return (error);

I'm trying to set 'keyUseCacheForHistograms' in some places with same result.

There is any way to get document information dissabling create histograms in Photoshop?