casa6

//# PythonInterpreter.cc: Interface for connecting and running tasks in Python.

//# Copyright (C) 2005

//# Associated Universities, Inc. Washington DC, USA.

//#

//# This library is free software; you can redistribute it and/or modify it

//# under the terms of the GNU Library General Public License as published by

//# the Free Software Foundation; either version 2 of the License, or (at your

//# option) any later version.

//#

//# This library is distributed in the hope that it will be useful, but WITHOUT

//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public

//# License for more details.

//#

//# You should have received a copy of the GNU Library General Public License

//# along with this library; if not, write to the Free Software Foundation,

//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.

//#

//# Correspondence concerning AIPS++ should be addressed as follows:

//#        Internet email: aips2-request@nrao.edu.

//#        Postal address: AIPS++ Project Office

//#                        National Radio Astronomy Observatory

//#                        520 Edgemont Road

//#                        Charlottesville, VA 22903-2475 USA

//#

//# $Id: $

#include <casaqt/QtParamGui/PythonInterpreter.h>

#include <Python.h>

​

using namespace casacore;

namespace casa {

​

// PYTHONINTERPRETER DEFINITIONS //

​

PythonInterpreter::PythonInterpreter(PyObject* shell) : m_shell(shell) {

    m_initialized = m_shell != NULL;

    m_standalone = m_shell == NULL;

    if(m_shell != NULL) Py_DECREF(m_shell);

}

​

PythonInterpreter::~PythonInterpreter() {

    if(m_standalone && m_initialized) {

        // can't call Py_Finalize because destruction of modules and objects is

        // random and causes segfaults after the logger is destroyed

        // Py_Finalize();

        // call taskmanager::finalize because otherwise a stray process sticks

        // around indefinitely

        PyRun_String("tm.finalize()", Py_file_input, m_shell, m_shell);

    } else if(!m_standalone && m_shell != NULL) {

        PyGILState_STATE gstate;

        gstate = PyGILState_Ensure();

        Py_DECREF(m_shell);

        PyGILState_Release(gstate);

    }

}

​

bool PythonInterpreter::init(bool showLogger) {

    if(m_shell == NULL && m_standalone && !m_initialized) {

        try {

            String casapylib = pythonPath();

            if(casapylib.empty()) return false;