/* 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.

 */

#include "uv.h"

#include "internal.h"

#define UV_LOOP_WATCHER_DEFINE(name, type)                                    \

  int uv_##name##_init(uv_loop_t* loop, uv_##name##_t* handle) {              \

    uv__handle_init(loop, (uv_handle_t*)handle, UV_##type);                   \

    handle->name##_cb = NULL;                                                 \

    return 0;                                                                 \

  }                                                                           \

                                                                              \

  int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) {           \

    if (uv__is_active(handle)) return 0;                                      \

    if (cb == NULL) return UV_EINVAL;                                         \

    QUEUE_INSERT_HEAD(&handle->loop->name##_handles, &handle->queue);         \

    handle->name##_cb = cb;                                                   \

    uv__handle_start(handle);                                                 \

    return 0;                                                                 \

  }                                                                           \

                                                                              \

  int uv_##name##_stop(uv_##name##_t* handle) {                               \

    if (!uv__is_active(handle)) return 0;                                     \

    QUEUE_REMOVE(&handle->queue);                                             \

    uv__handle_stop(handle);                                                  \

    return 0;                                                                 \

  }                                                                           \

                                                                              \

  void uv__run_##name(uv_loop_t* loop) {                                      \

    uv_##name##_t* h;                                                         \

    QUEUE queue;                                                              \

    QUEUE* q;                                                                 \

    QUEUE_MOVE(&loop->name##_handles, &queue);                                \

    while (!QUEUE_EMPTY(&queue)) {                                            \

      q = QUEUE_HEAD(&queue);                                                 \

      h = QUEUE_DATA(q, uv_##name##_t, queue);                                \

      QUEUE_REMOVE(q);                                                        \

      QUEUE_INSERT_TAIL(&loop->name##_handles, q);                            \

      h->name##_cb(h);                                                        \

    }                                                                         \

  }                                                                           \

                                                                              \

  void uv__##name##_close(uv_##name##_t* handle) {                            \

    uv_##name##_stop(handle);                                                 \

  }

UV_LOOP_WATCHER_DEFINE(prepare, PREPARE)

UV_LOOP_WATCHER_DEFINE(check, CHECK)

UV_LOOP_WATCHER_DEFINE(idle, IDLE)