- Added PoliciesGatekeeper class, but still not integrated it with the rest of the code
git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@610 3ecf2c5c-341e-0410-92b4-d18e462d057c
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// src/backend/policies_gatekeeper.cc - 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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#include "policies_gatekeeper.hh"
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#include <algorithm>
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#include <cassert>
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using std::vector;
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using namespace sgpem;
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PoliciesGatekeeper* PoliciesGatekeeper::_instance = NULL;
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PoliciesGatekeeper&
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PoliciesGatekeeper::get_instance()
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{
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if(!_instance)
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_instance = new PoliciesGatekeeper();
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return *_instance;
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}
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vector<PolicyManager*>
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PoliciesGatekeeper::get_registered() const
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{
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return _registered;
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}
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void
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PoliciesGatekeeper::register_manager(PolicyManager* manager)
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{
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using std::find;
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assert(manager != NULL);
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end = _registered.end();
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if(find(_registered.begin(), end, manager) != end)
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_registered.push_back(manager);
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}
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void
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PoliciesGatekeeper::unregister_manager(PolicyManager* manager)
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{
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using std::find;
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assert(manager != NULL);
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end = _registered.end();
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pos = find(_registered.begin(), end, manager);
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if(pos != end)
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_registered.erase(pos);
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}
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Policy*
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PoliciesGatekeeper::get_current_policy()
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{
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return _cur_policy;
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}
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void
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PoliciesGatekeeper::activate_policy(Policy* policy)
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{
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_cur_policy = policy;
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}
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PoliciesGatekeeper::PoliciesGatekeeper() :
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_cur_policy(NULL)
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{
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}
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@ -0,0 +1,78 @@
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// src/backend/policies_gatekeeper.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 POLICIES_GATEKEEPER_HH
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#define POLICIES_GATEKEEPER_HH 1
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namespace sgpem
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{
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class PolicyManager;
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class Policy;
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}
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#include "config.h"
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#include <vector>
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namespace sgpem
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{
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class PoliciesGatekeeper;
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/** \brief FIXME document me
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*/
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class PoliciesGatekeeper
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{
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public:
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/** \brief Returns the unique instance of this class, conforming to the Singleton pattern.
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*
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* \return the unique instance of this class, conforming to the Singleton pattern.
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*/
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static PoliciesGatekeeper& get_instance();
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std::vector<PolicyManager*> get_registered() const;
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/** FIXME what to do when the manager was already registered? should we throw an exception?
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*
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*/
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void register_manager(PolicyManager* manager);
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/** FIXME what to do when the manager wasn't already registered? should we throw an exception?
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*
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*/
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void unregister_manager(PolicyManager* manager);
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Policy* get_current_policy();
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void activate_policy(Policy* policy);
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private:
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PoliciesGatekeeper(); //private constructor.
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static PoliciesGatekeeper* _instance;
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std::vector<PolicyManager*> _registered;
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Policy* _cur_policy;
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};
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}//~ namespace sgpem
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#endif //POLICIES_GATEKEEPER_HH
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