NekMatrixToPython< T > Struct Template Reference

Static Public Member Functions
static PyObject *	convert (std::shared_ptr< NekMatrix< T, StandardMatrixTag > > const &mat)

Detailed Description

template<typename T>
struct NekMatrixToPython< T >

Definition at line 58 of file NekMatrix.cpp.

Member Function Documentation

convert()

template<typename T >

static PyObject * NekMatrixToPython< T >::convert ( std::shared_ptr< NekMatrix< T, StandardMatrixTag > > const &  mat )

inlinestatic

Definition at line 60 of file NekMatrix.cpp.

    {
        // Create a Python capsule to hold a pointer that contains a lightweight
        // copy of arr. That way we guarantee Python will still have access to
        // the memory allocated inside arr even if arr is deallocated in C++.
#if PY_MAJOR_VERSION == 2
        py::object capsule(py::handle<>(PyCObject_FromVoidPtr(
            new std::shared_ptr<NekMatrix<T, StandardMatrixTag>>(mat),
            NekMatrixCapsuleDestructor<T, StandardMatrixTag>)));
#else
        py::object capsule(py::handle<>(PyCapsule_New(
            (void *)new std::shared_ptr<NekMatrix<T, StandardMatrixTag>>(mat),
            nullptr,
            (PyCapsule_Destructor)&NekMatrixCapsuleDestructor<
                T, StandardMatrixTag>)));
#endif
 
        int nRows = mat->GetRows(), nCols = mat->GetColumns();
        MatrixStorage storage = mat->GetStorageType();
 
        ASSERTL0(storage == eFULL,
                 "Only full storage matrices are currently supported.");
 
        return py::incref(
            np::from_data(mat->GetRawPtr(), np::dtype::get_builtin<T>(),
                          py::make_tuple(nRows, nCols),
                          py::make_tuple(sizeof(T), nRows * sizeof(T)), capsule)
                .ptr());
    }

References ASSERTL0, Nektar::eFULL, and NekMatrixCapsuleDestructor().