timer.h

网络游戏通用架构, 这是基于boost和libevent写的一个程序

#ifndef TIMER_H
#define TIMER_H

#include <list>
#include <boost/shared_ptr.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

using namespace boost;
using namespace boost::posix_time;

#include "common.h"


class EXPORT TimePointInterface
{
    friend bool EXPORT operator < ( const shared_ptr<TimePointInterface>& __timepoint1, const shared_ptr<TimePointInterface>& __timepoint2 );
public:
    TimePointInterface( const ptime& __alarm_time, const time_duration& __step_time, const int __repeat );
    virtual ~TimePointInterface();
public:
    virtual void alarm(void) =0;
    bool operator <= ( const ptime& __time );
    bool step(void);//return true to be delete
protected:
    ptime _alarm_time;
    time_duration _step_time;
    int _repeat;
};

bool EXPORT operator < ( const shared_ptr<TimePointInterface>& __timepoint1, const shared_ptr<TimePointInterface>& __timepoint2 );

template< class Callback >
class EXPORT TimePoint : public TimePointInterface
{
public:
    TimePoint( const ptime& __alarm_time, const time_duration& __step_time, Callback& __callback, const int __repeat )
        : _callback(__callback), TimePointInterface( __alarm_time, __step_time, __repeat ) {}
    ~TimePoint() {}
public:
    void alarm(void)
    {
        _callback.alarm();
    }
protected:
    Callback& _callback;
};


class EXPORT Timer
{
public:
    Timer( float __speed= 1.0 );
    ~Timer();
public:
    void breathe(void);
    void setAlarm( shared_ptr<TimePointInterface>& __timepoint );
    void getTimeNow( ptime& __time );
    void setSpeed( float __speed );
    float getSpeed(void) const;
protected:
    void updateLastTime(void);
protected:
    std::list< shared_ptr<TimePointInterface> > _times;
    float _speed;
    ptime _last_time_normal;
    ptime _last_time_shift;
};

template< class Callback >
void EXPORT setAlarm( Timer& __timer, const ptime& __alarm_time, const time_duration& __step_time, Callback& __callback, const int __repeat= 0 )//循环相对定时
{
    __timer.setAlarm( shared_ptr<TimePointInterface>( new TimePoint<Callback>( __alarm_time, __step_time, __callback, __repeat ) ) );
}

#endif