- 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
This commit is contained in:
elvez 2006-06-06 22:13:33 +00:00
parent fbe718b69a
commit e5b90a39ad
2 changed files with 165 additions and 0 deletions

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// src/backend/policies_gatekeeper.cc - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "policies_gatekeeper.hh"
#include <algorithm>
#include <cassert>
using std::vector;
using namespace sgpem;
PoliciesGatekeeper* PoliciesGatekeeper::_instance = NULL;
PoliciesGatekeeper&
PoliciesGatekeeper::get_instance()
{
if(!_instance)
_instance = new PoliciesGatekeeper();
return *_instance;
}
vector<PolicyManager*>
PoliciesGatekeeper::get_registered() const
{
return _registered;
}
void
PoliciesGatekeeper::register_manager(PolicyManager* manager)
{
using std::find;
assert(manager != NULL);
end = _registered.end();
if(find(_registered.begin(), end, manager) != end)
_registered.push_back(manager);
}
void
PoliciesGatekeeper::unregister_manager(PolicyManager* manager)
{
using std::find;
assert(manager != NULL);
end = _registered.end();
pos = find(_registered.begin(), end, manager);
if(pos != end)
_registered.erase(pos);
}
Policy*
PoliciesGatekeeper::get_current_policy()
{
return _cur_policy;
}
void
PoliciesGatekeeper::activate_policy(Policy* policy)
{
_cur_policy = policy;
}
PoliciesGatekeeper::PoliciesGatekeeper() :
_cur_policy(NULL)
{
}

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// src/backend/policies_gatekeeper.hh - Copyright 2005, 2006, University
// of Padova, dept. of Pure and Applied
// Mathematics
//
// This file is part of SGPEMv2.
//
// This is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// SGPEMv2 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef POLICIES_GATEKEEPER_HH
#define POLICIES_GATEKEEPER_HH 1
namespace sgpem
{
class PolicyManager;
class Policy;
}
#include "config.h"
#include <vector>
namespace sgpem
{
class PoliciesGatekeeper;
/** \brief FIXME document me
*/
class PoliciesGatekeeper
{
public:
/** \brief Returns the unique instance of this class, conforming to the Singleton pattern.
*
* \return the unique instance of this class, conforming to the Singleton pattern.
*/
static PoliciesGatekeeper& get_instance();
std::vector<PolicyManager*> get_registered() const;
/** FIXME what to do when the manager was already registered? should we throw an exception?
*
*/
void register_manager(PolicyManager* manager);
/** FIXME what to do when the manager wasn't already registered? should we throw an exception?
*
*/
void unregister_manager(PolicyManager* manager);
Policy* get_current_policy();
void activate_policy(Policy* policy);
private:
PoliciesGatekeeper(); //private constructor.
static PoliciesGatekeeper* _instance;
std::vector<PolicyManager*> _registered;
Policy* _cur_policy;
};
}//~ namespace sgpem
#endif //POLICIES_GATEKEEPER_HH