/*
   Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, 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 THRMAN_H
#define THRMAN_H

#include <SimulatedBlock.hpp>
#include <LocalProxy.hpp>
#include <NdbGetRUsage.h>
#include <NdbTick.h>

#define JAM_FILE_ID 340

//#define DEBUG_CPU_USAGE 1
class Thrman : public SimulatedBlock
{
public:
  Thrman(Block_context& ctx, Uint32 instanceNumber = 0);
  virtual ~Thrman();
  BLOCK_DEFINES(Thrman);

  void execDBINFO_SCANREQ(Signal*);
  void execCONTINUEB(Signal*);
  void execGET_CPU_USAGE_REQ(Signal*);
  void execREAD_CONFIG_REQ(Signal*);
  void execSTTOR(Signal*);
protected:

private:
  /* Private methods */
  void sendSTTORRY(Signal*);
  void sendNextCONTINUEB(Signal*);
  void measure_cpu_usage(void);

  /* Private variables */
  struct ndb_rusage last_rusage;
  Uint32 current_cpu_load;

  NDB_TICKS prev_cpu_usage_check;

  static const Uint32 ZCONTINUEB_MEASURE_CPU_USAGE = 1;
  static const Uint32 default_cpu_load = 90;
};

class ThrmanProxy : public LocalProxy
{
public:
  ThrmanProxy(Block_context& ctx);
  virtual ~ThrmanProxy();
  BLOCK_DEFINES(ThrmanProxy);

protected:
  virtual SimulatedBlock* newWorker(Uint32 instanceNo);

};


#undef JAM_FILE_ID

#endif
