#if !defined(_NETIO_H_)

#define _NETIO_H_ 1

#include <stdint.h>
#include <stdio.h>
#include <sys/epoll.h>
#include <sys/socket.h>

#include "dataq.h"
#include "mylock.h"

typedef int (*msghandler_t)(struct epoll_event*);

#define IO_MON_INPUT  (0x01)
#define IO_MON_OUTPUT (0x02)

typedef struct {
    uint16_t sz;
    char*    data;
} io_packet_t;

typedef struct {
    mylock_t           lock;
    int                epoll_fd;
    struct epoll_event ev;
    pthread_t          worker;
} iomgr_t;

typedef struct {
    mylock_t     lock;
    iomgr_t*     iomgr;
    int          fd;
    int          idx;
    int          flags;
    unsigned int busy     : 1;
    unsigned int needfree : 1;
    uint32_t     refcount;
    dataq_t      outq;
    uint64_t     seq;
    msghandler_t handler;
    void*        owner;
    void*        data;
} endpoint_t;

extern int  netio_write(int, char*, int);
extern int  netio_read(int, char*, int);
extern int  write_packet(int, io_packet_t*);
extern int  alloc_packet(io_packet_t*);
extern int  read_packet(int, io_packet_t*);
extern void free_packet(io_packet_t*);

extern endpoint_t*  endpoint_get(void);
extern int          endpoint_init(endpoint_t*, int, int, int, int);
extern int          endpoint_connect(endpoint_t*, char*, int);
extern int          endpoint_accept(endpoint_t*, endpoint_t*);
extern int          endpoint_set_handler(endpoint_t*, msghandler_t, void*);
extern int          endpoint_enq(endpoint_t*, data_item_t*);
extern data_item_t* endpoint_deq(endpoint_t*);
extern endpoint_t*  endpoint_ref(endpoint_t*);
extern void         endpoint_deref(endpoint_t*);
extern uint64_t     endpoint_getseq(endpoint_t*);
extern void         endpoint_block_tasks(endpoint_t*);
extern void         endpoint_unblock_tasks(endpoint_t*);
extern int          endpoint_is_task_blocked(endpoint_t*);

extern int iomgr_init(iomgr_t*);
extern int iomgr_monitor(iomgr_t*, endpoint_t*);
extern int iomgr_unmonitor(iomgr_t*, endpoint_t*);
extern int iomgr_start(iomgr_t*);
extern int iomgr_fini(iomgr_t*);
extern int iomgr_stop(iomgr_t*);
#endif