ClockManager.h

Go to the documentation of this file.

// -*- C++ -*-
#ifndef COIL_CLOCKMANAGER_H
#define COIL_CLOCKMANAGER_H

#include <string>
#include <coil/Singleton.h>
#include <coil/TimeValue.h>
#include <coil/Mutex.h>
#include <coil/Guard.h>

namespace coil
{
  class IClock
  {
  public:
    virtual ~IClock() {}
    virtual coil::TimeValue gettime() const = 0;
    virtual bool settime(coil::TimeValue clocktime) = 0;
  };

  class SystemClock
    : public IClock
  {
  public:
    virtual ~SystemClock();
    virtual coil::TimeValue gettime() const;
    virtual bool settime(coil::TimeValue clocktime);
  };

  class LogicalClock
    : public IClock
  {
  public:
    LogicalClock();
    virtual ~LogicalClock();
    virtual coil::TimeValue gettime() const;
    virtual bool settime(coil::TimeValue clocktime);
  private:
    coil::TimeValue m_currentTime;
    mutable coil::Mutex m_currentTimeMutex;
  };

  class AdjustedClock
    : public IClock
  {
  public:
    AdjustedClock();
    virtual ~AdjustedClock();
    virtual coil::TimeValue gettime() const;
    virtual bool settime(coil::TimeValue clocktime);
  private:
    coil::TimeValue m_offset;
    mutable coil::Mutex m_offsetMutex;
  };

  class ClockManager
#ifndef WIN32
    : public coil::Singleton<ClockManager>
#endif
  {
  public:
    IClock& getClock(std::string clocktype);
#ifdef WIN32
    static ClockManager& instance();
    static ClockManager* clockmgr;
    static coil::Mutex clockmgr_mutex;
  private:
    ClockManager() {};
#endif
  private:
    SystemClock   m_systemClock;
    LogicalClock  m_logicalClock;
    AdjustedClock m_adjustedClock;
  };
}; // namespace coil
#endif // COIL_CLOCKMANAGER_H