logger_ref.hpp

Go to the documentation of this file.

/*
 * Copyright (c) 2014-2015, Hewlett-Packard Development Company, LP.
 * 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; either version 2 of the License, or (at your option)
 * any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * HP designates this particular file as subject to the "Classpath" exception
 * as provided by HP in the LICENSE.txt file that accompanied this code.
 */
#ifndef FOEDUS_LOG_LOGGER_REF_HPP_
#define FOEDUS_LOG_LOGGER_REF_HPP_

#include "foedus/attachable.hpp"
#include "foedus/epoch.hpp"
#include "foedus/fwd.hpp"
#include "foedus/log/fwd.hpp"
#include "foedus/log/log_id.hpp"
#include "foedus/savepoint/fwd.hpp"

namespace foedus {
namespace log {

class LoggerRef : public Attachable<LoggerControlBlock> {
 public:
  LoggerRef();
  LoggerRef(
    Engine* engine,
    LoggerControlBlock* block,
    LoggerId id,
    uint16_t numa_node,
    uint16_t in_node_ordinal);

  Epoch       get_durable_epoch() const;

  void        wakeup();

  void        wakeup_for_durable_epoch(Epoch desired_durable_epoch);

  void        copy_logger_state(savepoint::Savepoint *new_savepoint) const;

  void        add_epoch_history(const EpochMarkerLogType& epoch_marker);

  LogRange get_log_range(Epoch prev_epoch, Epoch until_epoch);

 protected:
  LoggerId  id_;
  uint16_t  numa_node_;
  uint16_t  in_node_ordinal_;
};

}  // namespace log
}  // namespace foedus
#endif  // FOEDUS_LOG_LOGGER_REF_HPP_