MasterGCP.hpp

/*
   Copyright (C) 2003, 2005-2007 MySQL AB
    All rights reserved. Use is subject to license terms.

   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
*/

#ifndef MASTER_GCP_HPP
#define MASTER_GCP_HPP

#include <NodeBitmask.hpp>

class MasterGCPConf {
  friend class Dbdih;
    
public:
  STATIC_CONST( SignalLength = 10 + NdbNodeBitmask::Size );

  enum State {
    GCP_READY            = 0,
    GCP_PREPARE_RECEIVED = 1,

    GCP_COMMIT_RECEIVED  = 2, // GCP_COMMIT received (and is running)

    GCP_COMMITTED = 3
  };

  enum SaveState {
    GCP_SAVE_IDLE     = 0,
    GCP_SAVE_REQ      = 1,

    GCP_SAVE_CONF     = 2,

    GCP_SAVE_COPY_GCI = 3
  };

  struct Upgrade {
    enum State {
      GCP_READY            = 0,
      GCP_PREPARE_RECEIVED = 1,
      GCP_COMMIT_RECEIVED  = 2,
      GCP_TC_FINISHED      = 3
    };
  };

private:  
  Uint32 gcpState;
  Uint32 senderNodeId;
  Uint32 failedNodeId;
  Uint32 newGCP_hi;
  Uint32 latestLCP;
  Uint32 oldestRestorableGCI;
  Uint32 keepGCI;
  Uint32 lcpActive[NdbNodeBitmask::Size];
  Uint32 newGCP_lo;
  Uint32 saveState;
  Uint32 saveGCI;
};

class MasterGCPReq {
  friend class Dbdih;
    
public:
  STATIC_CONST( SignalLength = 2 );
private:
  Uint32 masterRef;
  Uint32 failedNodeId;
};

class MasterGCPRef {
  friend class Dbdih;
    
public:
  STATIC_CONST( SignalLength = 2 );
private:
  Uint32 senderNodeId;
  Uint32 failedNodeId;
};
#endif