~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2009 Sun Microsystems, Inc.

 *

 *  This program 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; version 2 of the License.

 *

 *  This program 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 this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

#include <boost/thread/condition_variable.hpp>

#include <boost/thread/mutex.hpp>

#include <drizzled/visibility.h>

#include <list>

namespace drizzled {

namespace session {

class DRIZZLED_API Cache 

{

  typedef boost::shared_ptr<drizzled::Session> session_ptr;

public:

  typedef std::list<session_ptr> list;

  static list &getCache()

  {

    return cache;

  }

  static boost::mutex &mutex()

  {

    return _mutex;

  }

  static boost::condition_variable &cond()

  {

    return _end;

  }

  static void shutdownFirst();

  static void shutdownSecond();

  static void erase(const session_ptr&);

  static size_t count();

  static void insert(const session_ptr&);

  static session_ptr find(const session_id_t&);

private:

  static bool volatile _ready_to_exit;

  static list cache;

  static boost::mutex _mutex;

  static boost::condition_variable _end;

};

} /* namespace session */

} /* namespace drizzled */