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