/*
 * fd_manager.h
 *
 *  Created on: Sep 25, 2017
 *      Author: root
 */

#ifndef FD_MANAGER_H_
#define FD_MANAGER_H_

#include "common.h"
#include "packet.h"

struct fd_manager_t  // conver fd to a uniq 64bit number,avoid fd value conflict caused by close and re-create
// this class is not strictly necessary,it just makes epoll fd handling easier
{
    fd_info_t& get_info(fd64_t fd64);
    int exist_info(fd64_t);
    int exist(fd64_t fd64);
    int to_fd(fd64_t);
    void fd64_close(fd64_t fd64);
    void reserve(int n);
    u64_t create(int fd);
    fd_manager_t();

   private:
    u64_t counter;
    unordered_map<int, fd64_t> fd_to_fd64_mp;
    unordered_map<fd64_t, int> fd64_to_fd_mp;
    unordered_map<fd64_t, fd_info_t> fd_info_mp;
    int fd_exist(int fd);
    // void remove_fd(int fd);
    // fd64_t fd_to_fd64(int fd);
};

extern fd_manager_t fd_manager;
#endif /* FD_MANAGER_H_ */