simblocklist.cpp

mysql-5.0.22.tar.gz源码包

/* Copyright (C) 2003 MySQL AB

   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 */

#include "SimBlockList.hpp"
#include <SimulatedBlock.hpp>
#include <Cmvmi.hpp>
#include <Ndbfs.hpp>
#include <Dbacc.hpp>
#include <Dbdict.hpp>
#include <Dbdih.hpp>
#include <Dblqh.hpp>
#include <Dbtc.hpp>
#include <Dbtup.hpp>
#include <Ndbcntr.hpp>
#include <Qmgr.hpp>
#include <Trix.hpp>
#include <Backup.hpp>
#include <DbUtil.hpp>
#include <Suma.hpp>
#include <Dbtux.hpp>
#include <NdbEnv.h>

#ifndef VM_TRACE
#define NEW_BLOCK(B) new B
#else
enum SIMBLOCKLIST_DUMMY { A_VALUE = 0 };

void * operator new (size_t sz, SIMBLOCKLIST_DUMMY dummy){
  char * tmp = (char *)malloc(sz);

#ifndef NDB_PURIFY
#ifdef VM_TRACE
  const int initValue = 0xf3;
#else
  const int initValue = 0x0;
#endif
  
  const int p = (sz / 4096);
  const int r = (sz % 4096);
  
  for(int i = 0; i<p; i++)
    memset(tmp+(i*4096), initValue, 4096);
  
  if(r > 0)
    memset(tmp+p*4096, initValue, r);

#endif
  
  return tmp;
}
#define NEW_BLOCK(B) new(A_VALUE) B
#endif

void 
SimBlockList::load(const Configuration & conf){
  noOfBlocks = 16;
  theList = new SimulatedBlock * [noOfBlocks];
  Dbdict* dbdict = 0;
  Dbdih* dbdih = 0;

  SimulatedBlock * fs = 0;
  {
    Uint32 dl;
    const ndb_mgm_configuration_iterator * p = conf.getOwnConfigIterator();
    if(p && !ndb_mgm_get_int_parameter(p, CFG_DB_DISCLESS, &dl) && dl){
      fs = NEW_BLOCK(VoidFs)(conf);
    } else { 
      fs = NEW_BLOCK(Ndbfs)(conf);
    }
  }
  
  theList[0]  = NEW_BLOCK(Dbacc)(conf);
  theList[1]  = NEW_BLOCK(Cmvmi)(conf);
  theList[2]  = fs;
  theList[3]  = dbdict = NEW_BLOCK(Dbdict)(conf);
  theList[4]  = dbdih = NEW_BLOCK(Dbdih)(conf);
  theList[5]  = NEW_BLOCK(Dblqh)(conf);
  theList[6]  = NEW_BLOCK(Dbtc)(conf);
  theList[7]  = NEW_BLOCK(Dbtup)(conf);
  theList[8]  = NEW_BLOCK(Ndbcntr)(conf);
  theList[9]  = NEW_BLOCK(Qmgr)(conf);
  theList[10] = NEW_BLOCK(Trix)(conf);
  theList[11] = NEW_BLOCK(Backup)(conf);
  theList[12] = NEW_BLOCK(DbUtil)(conf);
  theList[13] = NEW_BLOCK(Suma)(conf);
  theList[14] = 0; //NEW_BLOCK(Grep)(conf);
  theList[15] = NEW_BLOCK(Dbtux)(conf);

  // Metadata common part shared by block instances
  ptrMetaDataCommon = new MetaData::Common(*dbdict, *dbdih);
  for (int i = 0; i < noOfBlocks; i++)
    if(theList[i])
      theList[i]->setMetaDataCommon(ptrMetaDataCommon);
}

void
SimBlockList::unload(){
  if(theList != 0){
    for(int i = 0; i<noOfBlocks; i++){
      if(theList[i] != 0){
#ifdef VM_TRACE
	theList[i]->~SimulatedBlock();
	free(theList[i]);
#else
        delete(theList[i]);
#endif
	theList[i] = 0;
      }
    }
    delete [] theList;
    delete ptrMetaDataCommon;
    theList    = 0;
    noOfBlocks = 0;
    ptrMetaDataCommon = 0;
  }
}