89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
// src/backend/pyloader/python_policy_manager.hh - Copyright 2005, 2006, University
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// of Padova, dept. of Pure and Applied
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// Mathematics
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//
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// This file is part of SGPEMv2.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// SGPEMv2 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with SGPEMv2; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef PYTHON_POLICY_MANAGER_HH
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#define PYTHON_POLICY_MANAGER_HH 1
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#include "config.h"
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#include <Python.h>
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#include "policy_manager.hh"
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#include "python_policy.hh"
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namespace sgpem
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{
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//class PolicyManager;
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class PythonPolicyManager;
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/** \brief Manages Python user-implemented policies
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*
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* This singleton manages the creation and destruction
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* of a Python policy.
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*/
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class SG_DLLEXPORT PythonPolicyManager : public PolicyManager
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{
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public:
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/** \brief Returns a reference to the active policy.
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*
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* For the moment, it will sufficit to keep and return
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* just one Policy for PolicyManager.
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* In the next milestones it will be possible to manage
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* more than one, and to retrieve the correct Policy by
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* passing a unique ID.
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*/
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Policy& get_policy();
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/** \brief Initialize the Python interpreter.
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*
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* If the interpreter has already been initialized, it terminates it, cleanups old policies,
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* and restarts it.
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*/
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void init();
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/** \brief Returns the singleton instance of
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* PythonPolicyManager.
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*
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* Please note that the first time you'll request
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* it, it will be still uninitialized.
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* @see init()
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*/
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static PythonPolicyManager* const get_instance();
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protected:
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/** The selected and active PyhonPolicy object. */
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PythonPolicyManager();
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std::auto_ptr<PythonPolicy> _python_policy;
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private:
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PythonPolicyManager(const PythonPolicyManager&);
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PythonPolicyManager& operator=(const PythonPolicyManager&);
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/** Singleton support. */
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static PythonPolicyManager* _instance;
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bool _initialized;
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};
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}
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#endif
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