/*

  silcos2schedule.c 

  Author: Pekka Riikonen <priikone@silcnet.org>

  Copyright (C) 2002 Pekka Riikonen

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; version 2 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

*/
/* $Id$ */

/* XXX TODO */

#include "silcincludes.h"
#include "silcschedule_i.h"

/* Calls normal select() system call. */

int silc_select(SilcScheduleFd fds, SilcUInt32 fds_count, struct timeval *timeout)
{
  fd_set in, out;
  int ret, i, max_fd = 0;

  FD_ZERO(&in);
  FD_ZERO(&out);

  for (i = 0; i < fds_count; i++) {
    if (!fds[i].events)
      continue;

    if (fds[i].fd > max_fd)
      max_fd = fds[i].fd;

    if (fds[i].events & SILC_TASK_READ)
      FD_SET(fds[i].fd, &in);
    if (fds[i].events & SILC_TASK_WRITE)
      FD_SET(fds[i].fd, &out);

    fds[i].revents = 0;
  }

  /*  ret = select(max_fd + 1, &in, &out, NULL, timeout); */
  if (ret <= 0)
    return ret;

  for (i = 0; i < fds_count; i++) {
    if (!fds[i].events)
      continue;

    if (FD_ISSET(fds[i].fd, &in))
      fds[i].revents |= SILC_TASK_READ;
    if (FD_ISSET(fds[i].fd, &out))
      fds[i].revents |= SILC_TASK_WRITE;
  }

  return ret;
}

#ifdef SILC_THREADS

/* XXX Do this like it's done in win32/ */

/* Internal wakeup context. */
typedef struct {

} *SilcOs2Wakeup;

SILC_TASK_CALLBACK(silc_schedule_wakeup_cb)
{

}

#endif /* SILC_THREADS */

/* Initializes the wakeup of the scheduler. In multi-threaded environment
   the scheduler needs to be wakenup when tasks are added or removed from
   the task queues. This will initialize the wakeup for the scheduler.
   Any tasks that needs to be registered must be registered to the `queue'.
   It is quaranteed that the scheduler will automatically free any
   registered tasks in this queue. This is system specific routine. */

void *silc_schedule_wakeup_init(SilcSchedule schedule)
{
#ifdef SILC_THREADS
  return NULL;

#endif
  return NULL;
}

/* Uninitializes the system specific wakeup. */

void silc_schedule_wakeup_uninit(void *context)
{
#ifdef SILC_THREADS

#endif
}

/* Wakes up the scheduler */

void silc_schedule_wakeup_internal(void *context)
{
#ifdef SILC_THREADS

#endif
}