#ifndef _WIN32_WINNT
# define _WIN32_WINNT   0x0501
#endif

#include <stdint.h>
#include <winsock2.h>
#include <mswsock.h>
#include <ws2tcpip.h>
#include <windows.h>

#include "tree.h"


/**
 * It should be possible to cast oio_buf[] to WSABUF[]
 * see http://msdn.microsoft.com/en-us/library/ms741542(v=vs.85).aspx
 */
typedef struct oio_buf {
  ULONG len;
  char* base;
} oio_buf;

#define oio_req_private_fields            \
  union {                                 \
    /* Used by I/O operations */          \
    OVERLAPPED overlapped;                \
    /* Used by timers */                  \
    struct {                              \
      RB_ENTRY(oio_req_s) tree_entry;     \
      int64_t due;                        \
    };                                    \
  };                                      \
  int flags;

#define oio_handle_private_fields         \
  union {                                 \
    SOCKET socket;                        \
    HANDLE handle;                        \
  };                                      \
  SOCKET accepted_socket;                 \
  struct oio_accept_req_s* accept_reqs;   \
  unsigned int flags;                     \
  unsigned int reqs_pending;              \
  oio_err error;