event_demultiplexer.h

#ifndef REACTOR_EVENT_DEMULTIPLEXER_H_
#define REACTOR_EVENT_DEMULTIPLEXER_H_

#include <set>
#include <map>
#include "reactor.h"

namespace reactor
{
    class EventDemultiplexer
    {
    public:

        virtual ~EventDemultiplexer() {}

        virtual int WaitEvents(std::map<handle_t, EventHandler *> * handlers,
                               int timeout = 0, time_heap* event_timer = NULL) = 0;
                               
        virtual int RequestEvent(handle_t handle, event_t evt) = 0;

        virtual int UnrequestEvent(handle_t handle) = 0;
    };

    ///////////////////////////////////////////////////////////////////////////////

    class EpollDemultiplexer : public EventDemultiplexer
    {
    public:
        EpollDemultiplexer();

        ~EpollDemultiplexer();

        virtual int WaitEvents(std::map<handle_t, EventHandler *> * handlers,
                               int timeout = 0, time_heap* event_timer = NULL);

        virtual int RequestEvent(handle_t handle, event_t evt);

        virtual int UnrequestEvent(handle_t handle);

    private:

        int  m_epoll_fd;
        int  m_fd_num;
    };
} // namespace reactor

#endif // REACTOR_EVENT_DEMULTIPLEXER_H_