/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#ifndef UV_WIN_HANDLE_INL_H_

#define UV_WIN_HANDLE_INL_H_

#include <assert.h>

#include <io.h>

#include "uv.h"

#include "internal.h"

#define DECREASE_ACTIVE_COUNT(loop, handle)                             \

  do {                                                                  \

    if (--(handle)->activecnt == 0 &&                                   \

        !((handle)->flags & UV_HANDLE_CLOSING)) {                       \

      uv__handle_stop((handle));                                        \

    }                                                                   \

    assert((handle)->activecnt >= 0);                                   \

  } while (0)

#define INCREASE_ACTIVE_COUNT(loop, handle)                             \

  do {                                                                  \

    if ((handle)->activecnt++ == 0) {                                   \

      uv__handle_start((handle));                                       \

    }                                                                   \

    assert((handle)->activecnt > 0);                                    \

  } while (0)

#define DECREASE_PENDING_REQ_COUNT(handle)                              \

  do {                                                                  \

    assert(handle->reqs_pending > 0);                                   \

    handle->reqs_pending--;                                             \

                                                                        \

    if (handle->flags & UV_HANDLE_CLOSING &&                            \

        handle->reqs_pending == 0) {                                    \

      uv_want_endgame(loop, (uv_handle_t*)handle);                      \

    }                                                                   \

  } while (0)

#define uv__handle_closing(handle)                                      \

  do {                                                                  \

    assert(!((handle)->flags & UV_HANDLE_CLOSING));                     \

                                                                        \

    if (!(((handle)->flags & UV_HANDLE_ACTIVE) &&                       \

          ((handle)->flags & UV_HANDLE_REF)))                           \

      uv__active_handle_add((uv_handle_t*) (handle));                   \

                                                                        \

    (handle)->flags |= UV_HANDLE_CLOSING;                               \

    (handle)->flags &= ~UV_HANDLE_ACTIVE;                               \

  } while (0)

#define uv__handle_close(handle)                                        \

  do {                                                                  \

    QUEUE_REMOVE(&(handle)->handle_queue);                              \

    uv__active_handle_rm((uv_handle_t*) (handle));                      \

                                                                        \

    (handle)->flags |= UV_HANDLE_CLOSED;                                \

                                                                        \

    if ((handle)->close_cb)                                             \

      (handle)->close_cb((uv_handle_t*) (handle));                      \

  } while (0)

INLINE static void uv_want_endgame(uv_loop_t* loop, uv_handle_t* handle) {

  if (!(handle->flags & UV_HANDLE_ENDGAME_QUEUED)) {

    handle->flags |= UV_HANDLE_ENDGAME_QUEUED;

    handle->endgame_next = loop->endgame_handles;

    loop->endgame_handles = handle;

  }

}

INLINE static void uv_process_endgames(uv_loop_t* loop) {

  uv_handle_t* handle;

  while (loop->endgame_handles) {

    handle = loop->endgame_handles;

    loop->endgame_handles = handle->endgame_next;

    handle->flags &= ~UV_HANDLE_ENDGAME_QUEUED;

    switch (handle->type) {

      case UV_TCP:

        uv_tcp_endgame(loop, (uv_tcp_t*) handle);

        break;

      case UV_NAMED_PIPE:

        uv_pipe_endgame(loop, (uv_pipe_t*) handle);

        break;

      case UV_TTY:

        uv_tty_endgame(loop, (uv_tty_t*) handle);

        break;

      case UV_UDP:

        uv_udp_endgame(loop, (uv_udp_t*) handle);

        break;

      case UV_POLL:

        uv_poll_endgame(loop, (uv_poll_t*) handle);

        break;

      case UV_TIMER:

        uv__timer_close((uv_timer_t*) handle);

        uv__handle_close(handle);

        break;

      case UV_PREPARE:

      case UV_CHECK:

      case UV_IDLE:

        uv_loop_watcher_endgame(loop, handle);

        break;

      case UV_ASYNC:

        uv_async_endgame(loop, (uv_async_t*) handle);

        break;

      case UV_SIGNAL:

        uv_signal_endgame(loop, (uv_signal_t*) handle);

        break;

      case UV_PROCESS:

        uv_process_endgame(loop, (uv_process_t*) handle);

        break;

      case UV_FS_EVENT:

        uv_fs_event_endgame(loop, (uv_fs_event_t*) handle);

        break;

      case UV_FS_POLL:

        uv__fs_poll_endgame(loop, (uv_fs_poll_t*) handle);

        break;

      default:

        assert(0);

        break;

    }

  }

}

INLINE static HANDLE uv__get_osfhandle(int fd)

{

  /* _get_osfhandle() raises an assert in debug builds if the FD is invalid.

   * But it also correctly checks the FD and returns INVALID_HANDLE_VALUE for

   * invalid FDs in release builds (or if you let the assert continue). So this

   * wrapper function disables asserts when calling _get_osfhandle. */

  HANDLE handle;

  UV_BEGIN_DISABLE_CRT_ASSERT();

  handle = (HANDLE) _get_osfhandle(fd);

  UV_END_DISABLE_CRT_ASSERT();

  return handle;

}

#endif /* UV_WIN_HANDLE_INL_H_ */