CADatabase.hpp

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/*
Copyright (c) 2000, The JAP-Team 
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

  - Redistributions of source code must retain the above copyright notice, 
    this list of conditions and the following disclaimer.

  - Redistributions in binary form must reproduce the above copyright notice, 
    this list of conditions and the following disclaimer in the documentation and/or 
    other materials provided with the distribution.

  - Neither the name of the University of Technology Dresden, Germany nor the names of its contributors 
    may be used to endorse or promote products derived from this software without specific 
    prior written permission. 

  
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS 
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
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*/
#ifndef ONLY_LOCAL_PROXY
#include "CAMutex.hpp"
#include "CAThread.hpp"
#ifndef __CA_DATABASE__
#define __CA_DATABASE__

typedef struct _t_database_entry
  {
    _t_database_entry* next;
    UINT64 key;
  } t_databaseEntry;

typedef struct _t_database_info
  {
    t_databaseEntry*  m_pHashTable[0x100][0x100];
    UINT32      m_u32Size;
  } t_databaseInfo;


#define SECONDS_PER_INTERVALL 30
#define FUTURE_TOLERANCE 5

THREAD_RETURN db_loopMaintenance(void *param);

class CADatabase
  {
    public:
      CADatabase();
      ~CADatabase();
      SINT32 insert(UINT8 key[16],UINT64 timestamp);
      SINT32 start();
      SINT32 stop();

      SINT32 test();
      static SINT32 measurePerformance(UINT8* strLogFile, UINT32 lowerBoundEntries, UINT32 upperBoundEntries, UINT32 stepBy, UINT32 meassuresPerStep, UINT32 insertsPerMeasure);

    private:
      friend THREAD_RETURN db_loopMaintenance(void *param);

      t_databaseInfo* createDBInfo();
      
      SINT32 clearDB(t_databaseInfo* pDB);
      
      SINT32 deleteDB(t_databaseInfo*& pDB);

      SINT32 nextClock();
      SINT32 fill(UINT32 nrOfEntries);

      SINT32 simulateInsert(UINT8 key[16]);

      UINT64 m_lastSwitch;
      t_databaseInfo* m_currDatabase;
      t_databaseInfo* m_nextDatabase;
      t_databaseInfo* m_prevDatabase;
      volatile bool m_bRun;
//      UINT32 m_refTime; //the seconds since epoch for the start of interval 0
      volatile SINT32 m_currentClock; //the current 'interval' since m_refTimer
      CAMutex*  m_pMutex;
      CAThread* m_pThread;
  };
#endif //__CA_DATABASE__
#endif //ONLY_LOCAL_PROXY