1/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22#include "uv.h"
23#include "internal.h"
24
25#define UV_LOOP_WATCHER_DEFINE(name, type) \
26 int uv_##name##_init(uv_loop_t* loop, uv_##name##_t* handle) { \
27 uv__handle_init(loop, (uv_handle_t*)handle, UV_##type); \
28 handle->name##_cb = NULL; \
29 return 0; \
30 } \
31 \
32 int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) { \
33 if (uv__is_active(handle)) return 0; \
34 if (cb == NULL) return UV_EINVAL; \
35 QUEUE_INSERT_HEAD(&handle->loop->name##_handles, &handle->queue); \
36 handle->name##_cb = cb; \
37 uv__handle_start(handle); \
38 return 0; \
39 } \
40 \
41 int uv_##name##_stop(uv_##name##_t* handle) { \
42 if (!uv__is_active(handle)) return 0; \
43 QUEUE_REMOVE(&handle->queue); \
44 uv__handle_stop(handle); \
45 return 0; \
46 } \
47 \
48 void uv__run_##name(uv_loop_t* loop) { \
49 uv_##name##_t* h; \
50 QUEUE queue; \
51 QUEUE* q; \
52 QUEUE_MOVE(&loop->name##_handles, &queue); \
53 while (!QUEUE_EMPTY(&queue)) { \
54 q = QUEUE_HEAD(&queue); \
55 h = QUEUE_DATA(q, uv_##name##_t, queue); \
56 QUEUE_REMOVE(q); \
57 QUEUE_INSERT_TAIL(&loop->name##_handles, q); \
58 h->name##_cb(h); \
59 } \
60 } \
61 \
62 void uv__##name##_close(uv_##name##_t* handle) { \
63 uv_##name##_stop(handle); \
64 }
65
66UV_LOOP_WATCHER_DEFINE(prepare, PREPARE)
67UV_LOOP_WATCHER_DEFINE(check, CHECK)
68UV_LOOP_WATCHER_DEFINE(idle, IDLE)
69