timerfactory.h

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/*       SoPlex --- the Sequential object-oriented simPlex.                  */
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/**@file  timerfactory.h
 * @brief TimerFactory class.
 */

#ifndef _TIMERFACTORY_H_
#define _TIMERFACTORY_H_

#include "soplex/spxdefines.h"
#include "soplex/spxalloc.h"
#include "soplex/timer.h"
#include "soplex/notimer.h"
#include "soplex/usertimer.h"
#include "soplex/wallclocktimer.h"

namespace soplex
{
/**@class   TimerFactory
   @ingroup Elementary

   @brief Class to create new timers and to switch types of exiting ones
   */

class TimerFactory
{

public:

   /// create timers and allocate memory for them
   static Timer* createTimer(Timer::TYPE ttype)
   {
      Timer* timer = 0;

      switch(ttype)
      {
      case Timer::OFF:
         spx_alloc(timer, sizeof(NoTimer));
         timer = new(timer) NoTimer();
         break;

      case Timer::USER_TIME:
         spx_alloc(timer, sizeof(UserTimer));
         timer = new(timer) UserTimer();
         break;

      case Timer::WALLCLOCK_TIME:
         spx_alloc(timer, sizeof(WallclockTimer));
         timer = new(timer) WallclockTimer();
         break;

      default:
         SPX_MSG_ERROR(std::cerr << "wrong timer specified" << std::endl;)
      }

      return timer;
   }

   static Timer* switchTimer(Timer* timer, Timer::TYPE ttype)
   {
      // check whether the type is different from the current one
      if(ttype != timer->type())
      {
         // @todo transfer the old times
         spx_free(timer);
         timer = createTimer(ttype);
      }

      return timer;
   }

};
} // namespace soplex
#endif // _TIMERFACTORY_H_