BPoll.h

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/*******************************************************************************
 *  BPoll.h     File poll class
 *          T.Barnaby,  BEAM Ltd,   01/4/05
 *  Copyright (c) 2012 All Right Reserved, Beam Ltd, http://www.beam.ltd.uk
 *******************************************************************************
 */
#ifndef BPOLL_H
#define BPOLL_H 1

#include <BList.h>
#include <BError.h>

#if TARGET_win32 || TARGET_win64
//#undef _WIN32_WINNT
//#define _WIN32_WINNT  WindowsVista
#include <winsock2.h>
#define POLLRDNORM 0x0100
#define POLLRDBAND 0x0200
#define POLLIN    (POLLRDNORM | POLLRDBAND)
#define POLLPRI    0x0400

#define POLLWRNORM 0x0010
#define POLLOUT   (POLLWRNORM)
#define POLLWRBAND 0x0020

#define POLLERR    0x0001
#define POLLHUP    0x0002
#define POLLNVAL   0x0004
#define NFDBITS     (8 * sizeof(int))

struct pollfd {
    int     fd;     /* File descriptor to poll.  */
    short int   events;     /* Types of events poller cares about.  */
    short int   revents;    /* Types of events that actually occurred.  */
};

#else
#include <sys/poll.h>
#endif

class BPoll {
public:
    typedef struct pollfd PollFd;

            BPoll();
            ~BPoll();
            
    void        append(int fd, int events = POLLIN|POLLERR|POLLHUP|POLLNVAL);   
    void        delFd(int fd);                          

    BError      doPoll(int& fd, int timeoutUs = -1);                
    BError      doPollEvents(int& fd, int& events, int timeoutUs = -1);     

    int     getPollFdsNum();
    PollFd*     getPollFds();
    void        clear();
private:
    int     nextFd(int i);
    
    int     ofdsNum;            
    PollFd*     ofds;               
    int     ofdsNext;           
};

#endif