#include "io.h"
#include "array.h"
#include "haveepoll.h"
#include "havekqueue.h"
#include "havedevpoll.h"
#include "havesigio.h"
#ifdef HAVE_SIGIO
#define _GNU_SOURCE
#include <signal.h>
#endif

#ifdef __MINGW32__
#include "socket.h"
extern HANDLE io_comport;
#endif

typedef struct {
  tai6464 timeout;
  unsigned int wantread:1;
  unsigned int wantwrite:1;
  unsigned int canread:1;
  unsigned int canwrite:1;
  unsigned int nonblock:1;
  unsigned int inuse:1;
  long next_read;
  long next_write;
  void* cookie;
#ifdef __MINGW32__
  OVERLAPPED o;
  HANDLE fd;
#endif
} io_entry;

extern array io_fds;
extern uint64 io_wanted_fds;
extern array io_pollfds;

extern long first_readable;
extern long first_writeable;

enum {
  UNDECIDED,
  POLL
#ifdef HAVE_KQUEUE
  ,KQUEUE
#endif
#ifdef HAVE_EPOLL
  ,EPOLL
#endif
#ifdef HAVE_SIGIO
  ,_SIGIO
#endif
#ifdef HAVE_DEVPOLL
  ,DEVPOLL
#endif
} io_waitmode;

#if defined(HAVE_KQUEUE) || defined(HAVE_EPOLL) || defined(HAVE_DEVPOLL)
extern int io_master;
#endif
#if defined(HAVE_SIGIO)
extern int io_signum;
extern sigset_t io_ss;

extern long alt_firstread;
extern long alt_firstwrite;
#endif

int64 io_waituntil2(int64 milliseconds);

#define debug_printf(x)