1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
35 | |
43 | |
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44 | /* this big block deduces configuration from config.h */ |
36 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
37 | # ifdef EV_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
38 | # include EV_CONFIG_H |
47 | # include EV_CONFIG_H |
39 | # else |
48 | # else |
40 | # include "config.h" |
49 | # include "config.h" |
… | |
… | |
51 | # ifndef EV_USE_MONOTONIC |
60 | # ifndef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 0 |
61 | # define EV_USE_MONOTONIC 0 |
53 | # endif |
62 | # endif |
54 | # ifndef EV_USE_REALTIME |
63 | # ifndef EV_USE_REALTIME |
55 | # define EV_USE_REALTIME 0 |
64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
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66 | # endif |
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67 | |
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68 | # ifndef EV_USE_NANOSLEEP |
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69 | # if HAVE_NANOSLEEP |
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70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
56 | # endif |
73 | # endif |
57 | # endif |
74 | # endif |
58 | |
75 | |
59 | # ifndef EV_USE_SELECT |
76 | # ifndef EV_USE_SELECT |
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
… | |
… | |
102 | # else |
119 | # else |
103 | # define EV_USE_INOTIFY 0 |
120 | # define EV_USE_INOTIFY 0 |
104 | # endif |
121 | # endif |
105 | # endif |
122 | # endif |
106 | |
123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
107 | #endif |
132 | #endif |
108 | |
133 | |
109 | #include <math.h> |
134 | #include <math.h> |
110 | #include <stdlib.h> |
135 | #include <stdlib.h> |
111 | #include <fcntl.h> |
136 | #include <fcntl.h> |
… | |
… | |
136 | # ifndef EV_SELECT_IS_WINSOCKET |
161 | # ifndef EV_SELECT_IS_WINSOCKET |
137 | # define EV_SELECT_IS_WINSOCKET 1 |
162 | # define EV_SELECT_IS_WINSOCKET 1 |
138 | # endif |
163 | # endif |
139 | #endif |
164 | #endif |
140 | |
165 | |
141 | /**/ |
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
142 | |
167 | |
143 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
144 | # define EV_USE_MONOTONIC 0 |
169 | # define EV_USE_MONOTONIC 0 |
145 | #endif |
170 | #endif |
146 | |
171 | |
147 | #ifndef EV_USE_REALTIME |
172 | #ifndef EV_USE_REALTIME |
148 | # define EV_USE_REALTIME 0 |
173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
149 | #endif |
178 | #endif |
150 | |
179 | |
151 | #ifndef EV_USE_SELECT |
180 | #ifndef EV_USE_SELECT |
152 | # define EV_USE_SELECT 1 |
181 | # define EV_USE_SELECT 1 |
153 | #endif |
182 | #endif |
… | |
… | |
159 | # define EV_USE_POLL 1 |
188 | # define EV_USE_POLL 1 |
160 | # endif |
189 | # endif |
161 | #endif |
190 | #endif |
162 | |
191 | |
163 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
164 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
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197 | # endif |
165 | #endif |
198 | #endif |
166 | |
199 | |
167 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
168 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
169 | #endif |
202 | #endif |
… | |
… | |
171 | #ifndef EV_USE_PORT |
204 | #ifndef EV_USE_PORT |
172 | # define EV_USE_PORT 0 |
205 | # define EV_USE_PORT 0 |
173 | #endif |
206 | #endif |
174 | |
207 | |
175 | #ifndef EV_USE_INOTIFY |
208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
176 | # define EV_USE_INOTIFY 0 |
212 | # define EV_USE_INOTIFY 0 |
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213 | # endif |
177 | #endif |
214 | #endif |
178 | |
215 | |
179 | #ifndef EV_PID_HASHSIZE |
216 | #ifndef EV_PID_HASHSIZE |
180 | # if EV_MINIMAL |
217 | # if EV_MINIMAL |
181 | # define EV_PID_HASHSIZE 1 |
218 | # define EV_PID_HASHSIZE 1 |
… | |
… | |
190 | # else |
227 | # else |
191 | # define EV_INOTIFY_HASHSIZE 16 |
228 | # define EV_INOTIFY_HASHSIZE 16 |
192 | # endif |
229 | # endif |
193 | #endif |
230 | #endif |
194 | |
231 | |
195 | /**/ |
232 | #ifndef EV_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | #ifndef EV_USE_4HEAP |
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241 | # define EV_USE_4HEAP !EV_MINIMAL |
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242 | #endif |
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243 | |
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244 | #ifndef EV_HEAP_CACHE_AT |
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245 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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246 | #endif |
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247 | |
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248 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
196 | |
249 | |
197 | #ifndef CLOCK_MONOTONIC |
250 | #ifndef CLOCK_MONOTONIC |
198 | # undef EV_USE_MONOTONIC |
251 | # undef EV_USE_MONOTONIC |
199 | # define EV_USE_MONOTONIC 0 |
252 | # define EV_USE_MONOTONIC 0 |
200 | #endif |
253 | #endif |
… | |
… | |
202 | #ifndef CLOCK_REALTIME |
255 | #ifndef CLOCK_REALTIME |
203 | # undef EV_USE_REALTIME |
256 | # undef EV_USE_REALTIME |
204 | # define EV_USE_REALTIME 0 |
257 | # define EV_USE_REALTIME 0 |
205 | #endif |
258 | #endif |
206 | |
259 | |
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260 | #if !EV_STAT_ENABLE |
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261 | # undef EV_USE_INOTIFY |
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262 | # define EV_USE_INOTIFY 0 |
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263 | #endif |
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264 | |
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265 | #if !EV_USE_NANOSLEEP |
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266 | # ifndef _WIN32 |
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267 | # include <sys/select.h> |
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268 | # endif |
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269 | #endif |
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270 | |
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271 | #if EV_USE_INOTIFY |
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272 | # include <sys/inotify.h> |
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273 | #endif |
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274 | |
207 | #if EV_SELECT_IS_WINSOCKET |
275 | #if EV_SELECT_IS_WINSOCKET |
208 | # include <winsock.h> |
276 | # include <winsock.h> |
209 | #endif |
277 | #endif |
210 | |
278 | |
211 | #if !EV_STAT_ENABLE |
279 | #if EV_USE_EVENTFD |
212 | # define EV_USE_INOTIFY 0 |
280 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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281 | # include <stdint.h> |
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282 | # ifdef __cplusplus |
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283 | extern "C" { |
213 | #endif |
284 | # endif |
214 | |
285 | int eventfd (unsigned int initval, int flags); |
215 | #if EV_USE_INOTIFY |
286 | # ifdef __cplusplus |
216 | # include <sys/inotify.h> |
287 | } |
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288 | # endif |
217 | #endif |
289 | #endif |
218 | |
290 | |
219 | /**/ |
291 | /**/ |
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292 | |
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293 | /* |
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294 | * This is used to avoid floating point rounding problems. |
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295 | * It is added to ev_rt_now when scheduling periodics |
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296 | * to ensure progress, time-wise, even when rounding |
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297 | * errors are against us. |
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298 | * This value is good at least till the year 4000. |
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299 | * Better solutions welcome. |
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300 | */ |
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301 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
220 | |
302 | |
221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
303 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
222 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
304 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
223 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
305 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
224 | |
306 | |
225 | #if __GNUC__ >= 3 |
307 | #if __GNUC__ >= 4 |
226 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
308 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
227 | # define noinline __attribute__ ((noinline)) |
309 | # define noinline __attribute__ ((noinline)) |
228 | #else |
310 | #else |
229 | # define expect(expr,value) (expr) |
311 | # define expect(expr,value) (expr) |
230 | # define noinline |
312 | # define noinline |
231 | # if __STDC_VERSION__ < 199901L |
313 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
232 | # define inline |
314 | # define inline |
233 | # endif |
315 | # endif |
234 | #endif |
316 | #endif |
235 | |
317 | |
236 | #define expect_false(expr) expect ((expr) != 0, 0) |
318 | #define expect_false(expr) expect ((expr) != 0, 0) |
… | |
… | |
251 | |
333 | |
252 | typedef ev_watcher *W; |
334 | typedef ev_watcher *W; |
253 | typedef ev_watcher_list *WL; |
335 | typedef ev_watcher_list *WL; |
254 | typedef ev_watcher_time *WT; |
336 | typedef ev_watcher_time *WT; |
255 | |
337 | |
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338 | #define ev_active(w) ((W)(w))->active |
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339 | #define ev_at(w) ((WT)(w))->at |
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340 | |
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341 | #if EV_USE_MONOTONIC |
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342 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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343 | /* giving it a reasonably high chance of working on typical architetcures */ |
256 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
344 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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345 | #endif |
257 | |
346 | |
258 | #ifdef _WIN32 |
347 | #ifdef _WIN32 |
259 | # include "ev_win32.c" |
348 | # include "ev_win32.c" |
260 | #endif |
349 | #endif |
261 | |
350 | |
… | |
… | |
282 | perror (msg); |
371 | perror (msg); |
283 | abort (); |
372 | abort (); |
284 | } |
373 | } |
285 | } |
374 | } |
286 | |
375 | |
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376 | static void * |
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377 | ev_realloc_emul (void *ptr, long size) |
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378 | { |
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379 | /* some systems, notably openbsd and darwin, fail to properly |
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380 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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381 | * the single unix specification, so work around them here. |
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382 | */ |
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383 | |
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384 | if (size) |
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385 | return realloc (ptr, size); |
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386 | |
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387 | free (ptr); |
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388 | return 0; |
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389 | } |
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390 | |
287 | static void *(*alloc)(void *ptr, long size); |
391 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
288 | |
392 | |
289 | void |
393 | void |
290 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
394 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
291 | { |
395 | { |
292 | alloc = cb; |
396 | alloc = cb; |
293 | } |
397 | } |
294 | |
398 | |
295 | inline_speed void * |
399 | inline_speed void * |
296 | ev_realloc (void *ptr, long size) |
400 | ev_realloc (void *ptr, long size) |
297 | { |
401 | { |
298 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
402 | ptr = alloc (ptr, size); |
299 | |
403 | |
300 | if (!ptr && size) |
404 | if (!ptr && size) |
301 | { |
405 | { |
302 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
406 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
303 | abort (); |
407 | abort (); |
… | |
… | |
326 | W w; |
430 | W w; |
327 | int events; |
431 | int events; |
328 | } ANPENDING; |
432 | } ANPENDING; |
329 | |
433 | |
330 | #if EV_USE_INOTIFY |
434 | #if EV_USE_INOTIFY |
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435 | /* hash table entry per inotify-id */ |
331 | typedef struct |
436 | typedef struct |
332 | { |
437 | { |
333 | WL head; |
438 | WL head; |
334 | } ANFS; |
439 | } ANFS; |
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440 | #endif |
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441 | |
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442 | /* Heap Entry */ |
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443 | #if EV_HEAP_CACHE_AT |
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444 | typedef struct { |
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445 | ev_tstamp at; |
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446 | WT w; |
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447 | } ANHE; |
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448 | |
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449 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
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450 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
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451 | #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ |
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452 | #else |
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453 | typedef WT ANHE; |
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454 | |
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455 | #define ANHE_w(he) (he) |
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456 | #define ANHE_at(he) (he)->at |
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457 | #define ANHE_at_set(he) |
335 | #endif |
458 | #endif |
336 | |
459 | |
337 | #if EV_MULTIPLICITY |
460 | #if EV_MULTIPLICITY |
338 | |
461 | |
339 | struct ev_loop |
462 | struct ev_loop |
… | |
… | |
397 | { |
520 | { |
398 | return ev_rt_now; |
521 | return ev_rt_now; |
399 | } |
522 | } |
400 | #endif |
523 | #endif |
401 | |
524 | |
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525 | void |
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526 | ev_sleep (ev_tstamp delay) |
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527 | { |
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528 | if (delay > 0.) |
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529 | { |
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530 | #if EV_USE_NANOSLEEP |
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531 | struct timespec ts; |
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532 | |
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533 | ts.tv_sec = (time_t)delay; |
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534 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
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535 | |
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536 | nanosleep (&ts, 0); |
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537 | #elif defined(_WIN32) |
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538 | Sleep ((unsigned long)(delay * 1e3)); |
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539 | #else |
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540 | struct timeval tv; |
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541 | |
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542 | tv.tv_sec = (time_t)delay; |
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543 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
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544 | |
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545 | select (0, 0, 0, 0, &tv); |
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546 | #endif |
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547 | } |
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548 | } |
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549 | |
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550 | /*****************************************************************************/ |
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551 | |
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552 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
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553 | |
402 | int inline_size |
554 | int inline_size |
403 | array_nextsize (int elem, int cur, int cnt) |
555 | array_nextsize (int elem, int cur, int cnt) |
404 | { |
556 | { |
405 | int ncur = cur + 1; |
557 | int ncur = cur + 1; |
406 | |
558 | |
407 | do |
559 | do |
408 | ncur <<= 1; |
560 | ncur <<= 1; |
409 | while (cnt > ncur); |
561 | while (cnt > ncur); |
410 | |
562 | |
411 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
563 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
412 | if (elem * ncur > 4096) |
564 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
413 | { |
565 | { |
414 | ncur *= elem; |
566 | ncur *= elem; |
415 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
567 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
416 | ncur = ncur - sizeof (void *) * 4; |
568 | ncur = ncur - sizeof (void *) * 4; |
417 | ncur /= elem; |
569 | ncur /= elem; |
418 | } |
570 | } |
419 | |
571 | |
420 | return ncur; |
572 | return ncur; |
… | |
… | |
466 | pendings [pri][w_->pending - 1].w = w_; |
618 | pendings [pri][w_->pending - 1].w = w_; |
467 | pendings [pri][w_->pending - 1].events = revents; |
619 | pendings [pri][w_->pending - 1].events = revents; |
468 | } |
620 | } |
469 | } |
621 | } |
470 | |
622 | |
471 | void inline_size |
623 | void inline_speed |
472 | queue_events (EV_P_ W *events, int eventcnt, int type) |
624 | queue_events (EV_P_ W *events, int eventcnt, int type) |
473 | { |
625 | { |
474 | int i; |
626 | int i; |
475 | |
627 | |
476 | for (i = 0; i < eventcnt; ++i) |
628 | for (i = 0; i < eventcnt; ++i) |
… | |
… | |
523 | { |
675 | { |
524 | int fd = fdchanges [i]; |
676 | int fd = fdchanges [i]; |
525 | ANFD *anfd = anfds + fd; |
677 | ANFD *anfd = anfds + fd; |
526 | ev_io *w; |
678 | ev_io *w; |
527 | |
679 | |
528 | int events = 0; |
680 | unsigned char events = 0; |
529 | |
681 | |
530 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
682 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
531 | events |= w->events; |
683 | events |= (unsigned char)w->events; |
532 | |
684 | |
533 | #if EV_SELECT_IS_WINSOCKET |
685 | #if EV_SELECT_IS_WINSOCKET |
534 | if (events) |
686 | if (events) |
535 | { |
687 | { |
536 | unsigned long argp; |
688 | unsigned long argp; |
|
|
689 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
690 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
691 | #else |
537 | anfd->handle = _get_osfhandle (fd); |
692 | anfd->handle = _get_osfhandle (fd); |
|
|
693 | #endif |
538 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
694 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
539 | } |
695 | } |
540 | #endif |
696 | #endif |
541 | |
697 | |
|
|
698 | { |
|
|
699 | unsigned char o_events = anfd->events; |
|
|
700 | unsigned char o_reify = anfd->reify; |
|
|
701 | |
542 | anfd->reify = 0; |
702 | anfd->reify = 0; |
543 | |
|
|
544 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
545 | anfd->events = events; |
703 | anfd->events = events; |
|
|
704 | |
|
|
705 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
706 | backend_modify (EV_A_ fd, o_events, events); |
|
|
707 | } |
546 | } |
708 | } |
547 | |
709 | |
548 | fdchangecnt = 0; |
710 | fdchangecnt = 0; |
549 | } |
711 | } |
550 | |
712 | |
551 | void inline_size |
713 | void inline_size |
552 | fd_change (EV_P_ int fd) |
714 | fd_change (EV_P_ int fd, int flags) |
553 | { |
715 | { |
554 | if (expect_false (anfds [fd].reify)) |
716 | unsigned char reify = anfds [fd].reify; |
555 | return; |
|
|
556 | |
|
|
557 | anfds [fd].reify = 1; |
717 | anfds [fd].reify |= flags; |
558 | |
718 | |
|
|
719 | if (expect_true (!reify)) |
|
|
720 | { |
559 | ++fdchangecnt; |
721 | ++fdchangecnt; |
560 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
722 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
561 | fdchanges [fdchangecnt - 1] = fd; |
723 | fdchanges [fdchangecnt - 1] = fd; |
|
|
724 | } |
562 | } |
725 | } |
563 | |
726 | |
564 | void inline_speed |
727 | void inline_speed |
565 | fd_kill (EV_P_ int fd) |
728 | fd_kill (EV_P_ int fd) |
566 | { |
729 | { |
… | |
… | |
617 | |
780 | |
618 | for (fd = 0; fd < anfdmax; ++fd) |
781 | for (fd = 0; fd < anfdmax; ++fd) |
619 | if (anfds [fd].events) |
782 | if (anfds [fd].events) |
620 | { |
783 | { |
621 | anfds [fd].events = 0; |
784 | anfds [fd].events = 0; |
622 | fd_change (EV_A_ fd); |
785 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
623 | } |
786 | } |
624 | } |
787 | } |
625 | |
788 | |
626 | /*****************************************************************************/ |
789 | /*****************************************************************************/ |
627 | |
790 | |
|
|
791 | /* |
|
|
792 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
793 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
794 | * the branching factor of the d-tree. |
|
|
795 | */ |
|
|
796 | |
|
|
797 | /* |
|
|
798 | * at the moment we allow libev the luxury of two heaps, |
|
|
799 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
800 | * which is more cache-efficient. |
|
|
801 | * the difference is about 5% with 50000+ watchers. |
|
|
802 | */ |
|
|
803 | #if EV_USE_4HEAP |
|
|
804 | |
|
|
805 | #define DHEAP 4 |
|
|
806 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
807 | |
|
|
808 | /* towards the root */ |
628 | void inline_speed |
809 | void inline_speed |
629 | upheap (WT *heap, int k) |
810 | upheap (ANHE *heap, int k) |
630 | { |
811 | { |
631 | WT w = heap [k]; |
812 | ANHE he = heap [k]; |
632 | |
813 | |
633 | while (k && heap [k >> 1]->at > w->at) |
814 | for (;;) |
634 | { |
815 | { |
|
|
816 | int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
|
|
817 | |
|
|
818 | if (p == k || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
819 | break; |
|
|
820 | |
635 | heap [k] = heap [k >> 1]; |
821 | heap [k] = heap [p]; |
636 | ((W)heap [k])->active = k + 1; |
822 | ev_active (ANHE_w (heap [k])) = k; |
637 | k >>= 1; |
823 | k = p; |
638 | } |
824 | } |
639 | |
825 | |
|
|
826 | ev_active (ANHE_w (he)) = k; |
640 | heap [k] = w; |
827 | heap [k] = he; |
641 | ((W)heap [k])->active = k + 1; |
|
|
642 | |
|
|
643 | } |
828 | } |
644 | |
829 | |
|
|
830 | /* away from the root */ |
645 | void inline_speed |
831 | void inline_speed |
646 | downheap (WT *heap, int N, int k) |
832 | downheap (ANHE *heap, int N, int k) |
647 | { |
833 | { |
648 | WT w = heap [k]; |
834 | ANHE he = heap [k]; |
|
|
835 | ANHE *E = heap + N + HEAP0; |
649 | |
836 | |
650 | while (k < (N >> 1)) |
837 | for (;;) |
651 | { |
838 | { |
652 | int j = k << 1; |
839 | ev_tstamp minat; |
|
|
840 | ANHE *minpos; |
|
|
841 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
653 | |
842 | |
654 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
843 | // find minimum child |
|
|
844 | if (expect_true (pos + DHEAP - 1 < E)) |
655 | ++j; |
845 | { |
656 | |
846 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
657 | if (w->at <= heap [j]->at) |
847 | if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
848 | if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
849 | if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
850 | } |
|
|
851 | else if (pos < E) |
|
|
852 | { |
|
|
853 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
854 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
855 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
856 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
857 | } |
|
|
858 | else |
658 | break; |
859 | break; |
659 | |
860 | |
|
|
861 | if (ANHE_at (he) <= minat) |
|
|
862 | break; |
|
|
863 | |
|
|
864 | ev_active (ANHE_w (*minpos)) = k; |
|
|
865 | heap [k] = *minpos; |
|
|
866 | |
|
|
867 | k = minpos - heap; |
|
|
868 | } |
|
|
869 | |
|
|
870 | ev_active (ANHE_w (he)) = k; |
|
|
871 | heap [k] = he; |
|
|
872 | } |
|
|
873 | |
|
|
874 | #else // 4HEAP |
|
|
875 | |
|
|
876 | #define HEAP0 1 |
|
|
877 | |
|
|
878 | /* towards the root */ |
|
|
879 | void inline_speed |
|
|
880 | upheap (ANHE *heap, int k) |
|
|
881 | { |
|
|
882 | ANHE he = heap [k]; |
|
|
883 | |
|
|
884 | for (;;) |
|
|
885 | { |
|
|
886 | int p = k >> 1; |
|
|
887 | |
|
|
888 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
889 | if (!p || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
890 | break; |
|
|
891 | |
660 | heap [k] = heap [j]; |
892 | heap [k] = heap [p]; |
661 | ((W)heap [k])->active = k + 1; |
893 | ev_active (ANHE_w (heap [k])) = k; |
662 | k = j; |
894 | k = p; |
663 | } |
895 | } |
664 | |
896 | |
665 | heap [k] = w; |
897 | heap [k] = he; |
666 | ((W)heap [k])->active = k + 1; |
898 | ev_active (ANHE_w (heap [k])) = k; |
667 | } |
899 | } |
|
|
900 | |
|
|
901 | /* away from the root */ |
|
|
902 | void inline_speed |
|
|
903 | downheap (ANHE *heap, int N, int k) |
|
|
904 | { |
|
|
905 | ANHE he = heap [k]; |
|
|
906 | |
|
|
907 | for (;;) |
|
|
908 | { |
|
|
909 | int c = k << 1; |
|
|
910 | |
|
|
911 | if (c > N) |
|
|
912 | break; |
|
|
913 | |
|
|
914 | c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
915 | ? 1 : 0; |
|
|
916 | |
|
|
917 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
918 | break; |
|
|
919 | |
|
|
920 | heap [k] = heap [c]; |
|
|
921 | ev_active (ANHE_w (heap [k])) = k; |
|
|
922 | |
|
|
923 | k = c; |
|
|
924 | } |
|
|
925 | |
|
|
926 | heap [k] = he; |
|
|
927 | ev_active (ANHE_w (he)) = k; |
|
|
928 | } |
|
|
929 | #endif |
668 | |
930 | |
669 | void inline_size |
931 | void inline_size |
670 | adjustheap (WT *heap, int N, int k) |
932 | adjustheap (ANHE *heap, int N, int k) |
671 | { |
933 | { |
672 | upheap (heap, k); |
934 | upheap (heap, k); |
673 | downheap (heap, N, k); |
935 | downheap (heap, N, k); |
674 | } |
936 | } |
675 | |
937 | |
676 | /*****************************************************************************/ |
938 | /*****************************************************************************/ |
677 | |
939 | |
678 | typedef struct |
940 | typedef struct |
679 | { |
941 | { |
680 | WL head; |
942 | WL head; |
681 | sig_atomic_t volatile gotsig; |
943 | EV_ATOMIC_T gotsig; |
682 | } ANSIG; |
944 | } ANSIG; |
683 | |
945 | |
684 | static ANSIG *signals; |
946 | static ANSIG *signals; |
685 | static int signalmax; |
947 | static int signalmax; |
686 | |
948 | |
687 | static int sigpipe [2]; |
949 | static EV_ATOMIC_T gotsig; |
688 | static sig_atomic_t volatile gotsig; |
|
|
689 | static ev_io sigev; |
|
|
690 | |
950 | |
691 | void inline_size |
951 | void inline_size |
692 | signals_init (ANSIG *base, int count) |
952 | signals_init (ANSIG *base, int count) |
693 | { |
953 | { |
694 | while (count--) |
954 | while (count--) |
… | |
… | |
698 | |
958 | |
699 | ++base; |
959 | ++base; |
700 | } |
960 | } |
701 | } |
961 | } |
702 | |
962 | |
703 | static void |
963 | /*****************************************************************************/ |
704 | sighandler (int signum) |
|
|
705 | { |
|
|
706 | #if _WIN32 |
|
|
707 | signal (signum, sighandler); |
|
|
708 | #endif |
|
|
709 | |
|
|
710 | signals [signum - 1].gotsig = 1; |
|
|
711 | |
|
|
712 | if (!gotsig) |
|
|
713 | { |
|
|
714 | int old_errno = errno; |
|
|
715 | gotsig = 1; |
|
|
716 | write (sigpipe [1], &signum, 1); |
|
|
717 | errno = old_errno; |
|
|
718 | } |
|
|
719 | } |
|
|
720 | |
|
|
721 | void noinline |
|
|
722 | ev_feed_signal_event (EV_P_ int signum) |
|
|
723 | { |
|
|
724 | WL w; |
|
|
725 | |
|
|
726 | #if EV_MULTIPLICITY |
|
|
727 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
728 | #endif |
|
|
729 | |
|
|
730 | --signum; |
|
|
731 | |
|
|
732 | if (signum < 0 || signum >= signalmax) |
|
|
733 | return; |
|
|
734 | |
|
|
735 | signals [signum].gotsig = 0; |
|
|
736 | |
|
|
737 | for (w = signals [signum].head; w; w = w->next) |
|
|
738 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
739 | } |
|
|
740 | |
|
|
741 | static void |
|
|
742 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
743 | { |
|
|
744 | int signum; |
|
|
745 | |
|
|
746 | read (sigpipe [0], &revents, 1); |
|
|
747 | gotsig = 0; |
|
|
748 | |
|
|
749 | for (signum = signalmax; signum--; ) |
|
|
750 | if (signals [signum].gotsig) |
|
|
751 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
752 | } |
|
|
753 | |
964 | |
754 | void inline_speed |
965 | void inline_speed |
755 | fd_intern (int fd) |
966 | fd_intern (int fd) |
756 | { |
967 | { |
757 | #ifdef _WIN32 |
968 | #ifdef _WIN32 |
… | |
… | |
762 | fcntl (fd, F_SETFL, O_NONBLOCK); |
973 | fcntl (fd, F_SETFL, O_NONBLOCK); |
763 | #endif |
974 | #endif |
764 | } |
975 | } |
765 | |
976 | |
766 | static void noinline |
977 | static void noinline |
767 | siginit (EV_P) |
978 | evpipe_init (EV_P) |
768 | { |
979 | { |
|
|
980 | if (!ev_is_active (&pipeev)) |
|
|
981 | { |
|
|
982 | #if EV_USE_EVENTFD |
|
|
983 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
984 | { |
|
|
985 | evpipe [0] = -1; |
|
|
986 | fd_intern (evfd); |
|
|
987 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
988 | } |
|
|
989 | else |
|
|
990 | #endif |
|
|
991 | { |
|
|
992 | while (pipe (evpipe)) |
|
|
993 | syserr ("(libev) error creating signal/async pipe"); |
|
|
994 | |
769 | fd_intern (sigpipe [0]); |
995 | fd_intern (evpipe [0]); |
770 | fd_intern (sigpipe [1]); |
996 | fd_intern (evpipe [1]); |
|
|
997 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
998 | } |
771 | |
999 | |
772 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
773 | ev_io_start (EV_A_ &sigev); |
1000 | ev_io_start (EV_A_ &pipeev); |
774 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1001 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1002 | } |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | void inline_size |
|
|
1006 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1007 | { |
|
|
1008 | if (!*flag) |
|
|
1009 | { |
|
|
1010 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1011 | |
|
|
1012 | *flag = 1; |
|
|
1013 | |
|
|
1014 | #if EV_USE_EVENTFD |
|
|
1015 | if (evfd >= 0) |
|
|
1016 | { |
|
|
1017 | uint64_t counter = 1; |
|
|
1018 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1019 | } |
|
|
1020 | else |
|
|
1021 | #endif |
|
|
1022 | write (evpipe [1], &old_errno, 1); |
|
|
1023 | |
|
|
1024 | errno = old_errno; |
|
|
1025 | } |
|
|
1026 | } |
|
|
1027 | |
|
|
1028 | static void |
|
|
1029 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1030 | { |
|
|
1031 | #if EV_USE_EVENTFD |
|
|
1032 | if (evfd >= 0) |
|
|
1033 | { |
|
|
1034 | uint64_t counter; |
|
|
1035 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1036 | } |
|
|
1037 | else |
|
|
1038 | #endif |
|
|
1039 | { |
|
|
1040 | char dummy; |
|
|
1041 | read (evpipe [0], &dummy, 1); |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1045 | { |
|
|
1046 | int signum; |
|
|
1047 | gotsig = 0; |
|
|
1048 | |
|
|
1049 | for (signum = signalmax; signum--; ) |
|
|
1050 | if (signals [signum].gotsig) |
|
|
1051 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | #if EV_ASYNC_ENABLE |
|
|
1055 | if (gotasync) |
|
|
1056 | { |
|
|
1057 | int i; |
|
|
1058 | gotasync = 0; |
|
|
1059 | |
|
|
1060 | for (i = asynccnt; i--; ) |
|
|
1061 | if (asyncs [i]->sent) |
|
|
1062 | { |
|
|
1063 | asyncs [i]->sent = 0; |
|
|
1064 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1065 | } |
|
|
1066 | } |
|
|
1067 | #endif |
775 | } |
1068 | } |
776 | |
1069 | |
777 | /*****************************************************************************/ |
1070 | /*****************************************************************************/ |
778 | |
1071 | |
|
|
1072 | static void |
|
|
1073 | ev_sighandler (int signum) |
|
|
1074 | { |
|
|
1075 | #if EV_MULTIPLICITY |
|
|
1076 | struct ev_loop *loop = &default_loop_struct; |
|
|
1077 | #endif |
|
|
1078 | |
|
|
1079 | #if _WIN32 |
|
|
1080 | signal (signum, ev_sighandler); |
|
|
1081 | #endif |
|
|
1082 | |
|
|
1083 | signals [signum - 1].gotsig = 1; |
|
|
1084 | evpipe_write (EV_A_ &gotsig); |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | void noinline |
|
|
1088 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1089 | { |
|
|
1090 | WL w; |
|
|
1091 | |
|
|
1092 | #if EV_MULTIPLICITY |
|
|
1093 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1094 | #endif |
|
|
1095 | |
|
|
1096 | --signum; |
|
|
1097 | |
|
|
1098 | if (signum < 0 || signum >= signalmax) |
|
|
1099 | return; |
|
|
1100 | |
|
|
1101 | signals [signum].gotsig = 0; |
|
|
1102 | |
|
|
1103 | for (w = signals [signum].head; w; w = w->next) |
|
|
1104 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1105 | } |
|
|
1106 | |
|
|
1107 | /*****************************************************************************/ |
|
|
1108 | |
779 | static ev_child *childs [EV_PID_HASHSIZE]; |
1109 | static WL childs [EV_PID_HASHSIZE]; |
780 | |
1110 | |
781 | #ifndef _WIN32 |
1111 | #ifndef _WIN32 |
782 | |
1112 | |
783 | static ev_signal childev; |
1113 | static ev_signal childev; |
784 | |
1114 | |
|
|
1115 | #ifndef WIFCONTINUED |
|
|
1116 | # define WIFCONTINUED(status) 0 |
|
|
1117 | #endif |
|
|
1118 | |
785 | void inline_speed |
1119 | void inline_speed |
786 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
1120 | child_reap (EV_P_ int chain, int pid, int status) |
787 | { |
1121 | { |
788 | ev_child *w; |
1122 | ev_child *w; |
|
|
1123 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
789 | |
1124 | |
790 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1125 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1126 | { |
791 | if (w->pid == pid || !w->pid) |
1127 | if ((w->pid == pid || !w->pid) |
|
|
1128 | && (!traced || (w->flags & 1))) |
792 | { |
1129 | { |
793 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
1130 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
794 | w->rpid = pid; |
1131 | w->rpid = pid; |
795 | w->rstatus = status; |
1132 | w->rstatus = status; |
796 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
1133 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
797 | } |
1134 | } |
|
|
1135 | } |
798 | } |
1136 | } |
799 | |
1137 | |
800 | #ifndef WCONTINUED |
1138 | #ifndef WCONTINUED |
801 | # define WCONTINUED 0 |
1139 | # define WCONTINUED 0 |
802 | #endif |
1140 | #endif |
… | |
… | |
811 | if (!WCONTINUED |
1149 | if (!WCONTINUED |
812 | || errno != EINVAL |
1150 | || errno != EINVAL |
813 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1151 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
814 | return; |
1152 | return; |
815 | |
1153 | |
816 | /* make sure we are called again until all childs have been reaped */ |
1154 | /* make sure we are called again until all children have been reaped */ |
817 | /* we need to do it this way so that the callback gets called before we continue */ |
1155 | /* we need to do it this way so that the callback gets called before we continue */ |
818 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1156 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
819 | |
1157 | |
820 | child_reap (EV_A_ sw, pid, pid, status); |
1158 | child_reap (EV_A_ pid, pid, status); |
821 | if (EV_PID_HASHSIZE > 1) |
1159 | if (EV_PID_HASHSIZE > 1) |
822 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1160 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
823 | } |
1161 | } |
824 | |
1162 | |
825 | #endif |
1163 | #endif |
826 | |
1164 | |
827 | /*****************************************************************************/ |
1165 | /*****************************************************************************/ |
… | |
… | |
899 | } |
1237 | } |
900 | |
1238 | |
901 | unsigned int |
1239 | unsigned int |
902 | ev_embeddable_backends (void) |
1240 | ev_embeddable_backends (void) |
903 | { |
1241 | { |
904 | return EVBACKEND_EPOLL |
1242 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
905 | | EVBACKEND_KQUEUE |
1243 | |
906 | | EVBACKEND_PORT; |
1244 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1245 | /* please fix it and tell me how to detect the fix */ |
|
|
1246 | flags &= ~EVBACKEND_EPOLL; |
|
|
1247 | |
|
|
1248 | return flags; |
907 | } |
1249 | } |
908 | |
1250 | |
909 | unsigned int |
1251 | unsigned int |
910 | ev_backend (EV_P) |
1252 | ev_backend (EV_P) |
911 | { |
1253 | { |
… | |
… | |
914 | |
1256 | |
915 | unsigned int |
1257 | unsigned int |
916 | ev_loop_count (EV_P) |
1258 | ev_loop_count (EV_P) |
917 | { |
1259 | { |
918 | return loop_count; |
1260 | return loop_count; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | void |
|
|
1264 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1265 | { |
|
|
1266 | io_blocktime = interval; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | void |
|
|
1270 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1271 | { |
|
|
1272 | timeout_blocktime = interval; |
919 | } |
1273 | } |
920 | |
1274 | |
921 | static void noinline |
1275 | static void noinline |
922 | loop_init (EV_P_ unsigned int flags) |
1276 | loop_init (EV_P_ unsigned int flags) |
923 | { |
1277 | { |
… | |
… | |
929 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1283 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
930 | have_monotonic = 1; |
1284 | have_monotonic = 1; |
931 | } |
1285 | } |
932 | #endif |
1286 | #endif |
933 | |
1287 | |
934 | ev_rt_now = ev_time (); |
1288 | ev_rt_now = ev_time (); |
935 | mn_now = get_clock (); |
1289 | mn_now = get_clock (); |
936 | now_floor = mn_now; |
1290 | now_floor = mn_now; |
937 | rtmn_diff = ev_rt_now - mn_now; |
1291 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1292 | |
|
|
1293 | io_blocktime = 0.; |
|
|
1294 | timeout_blocktime = 0.; |
|
|
1295 | backend = 0; |
|
|
1296 | backend_fd = -1; |
|
|
1297 | gotasync = 0; |
|
|
1298 | #if EV_USE_INOTIFY |
|
|
1299 | fs_fd = -2; |
|
|
1300 | #endif |
938 | |
1301 | |
939 | /* pid check not overridable via env */ |
1302 | /* pid check not overridable via env */ |
940 | #ifndef _WIN32 |
1303 | #ifndef _WIN32 |
941 | if (flags & EVFLAG_FORKCHECK) |
1304 | if (flags & EVFLAG_FORKCHECK) |
942 | curpid = getpid (); |
1305 | curpid = getpid (); |
… | |
… | |
945 | if (!(flags & EVFLAG_NOENV) |
1308 | if (!(flags & EVFLAG_NOENV) |
946 | && !enable_secure () |
1309 | && !enable_secure () |
947 | && getenv ("LIBEV_FLAGS")) |
1310 | && getenv ("LIBEV_FLAGS")) |
948 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1311 | flags = atoi (getenv ("LIBEV_FLAGS")); |
949 | |
1312 | |
950 | if (!(flags & 0x0000ffffUL)) |
1313 | if (!(flags & 0x0000ffffU)) |
951 | flags |= ev_recommended_backends (); |
1314 | flags |= ev_recommended_backends (); |
952 | |
|
|
953 | backend = 0; |
|
|
954 | backend_fd = -1; |
|
|
955 | #if EV_USE_INOTIFY |
|
|
956 | fs_fd = -2; |
|
|
957 | #endif |
|
|
958 | |
1315 | |
959 | #if EV_USE_PORT |
1316 | #if EV_USE_PORT |
960 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1317 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
961 | #endif |
1318 | #endif |
962 | #if EV_USE_KQUEUE |
1319 | #if EV_USE_KQUEUE |
… | |
… | |
970 | #endif |
1327 | #endif |
971 | #if EV_USE_SELECT |
1328 | #if EV_USE_SELECT |
972 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1329 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
973 | #endif |
1330 | #endif |
974 | |
1331 | |
975 | ev_init (&sigev, sigcb); |
1332 | ev_init (&pipeev, pipecb); |
976 | ev_set_priority (&sigev, EV_MAXPRI); |
1333 | ev_set_priority (&pipeev, EV_MAXPRI); |
977 | } |
1334 | } |
978 | } |
1335 | } |
979 | |
1336 | |
980 | static void noinline |
1337 | static void noinline |
981 | loop_destroy (EV_P) |
1338 | loop_destroy (EV_P) |
982 | { |
1339 | { |
983 | int i; |
1340 | int i; |
|
|
1341 | |
|
|
1342 | if (ev_is_active (&pipeev)) |
|
|
1343 | { |
|
|
1344 | ev_ref (EV_A); /* signal watcher */ |
|
|
1345 | ev_io_stop (EV_A_ &pipeev); |
|
|
1346 | |
|
|
1347 | #if EV_USE_EVENTFD |
|
|
1348 | if (evfd >= 0) |
|
|
1349 | close (evfd); |
|
|
1350 | #endif |
|
|
1351 | |
|
|
1352 | if (evpipe [0] >= 0) |
|
|
1353 | { |
|
|
1354 | close (evpipe [0]); |
|
|
1355 | close (evpipe [1]); |
|
|
1356 | } |
|
|
1357 | } |
984 | |
1358 | |
985 | #if EV_USE_INOTIFY |
1359 | #if EV_USE_INOTIFY |
986 | if (fs_fd >= 0) |
1360 | if (fs_fd >= 0) |
987 | close (fs_fd); |
1361 | close (fs_fd); |
988 | #endif |
1362 | #endif |
… | |
… | |
1011 | array_free (pending, [i]); |
1385 | array_free (pending, [i]); |
1012 | #if EV_IDLE_ENABLE |
1386 | #if EV_IDLE_ENABLE |
1013 | array_free (idle, [i]); |
1387 | array_free (idle, [i]); |
1014 | #endif |
1388 | #endif |
1015 | } |
1389 | } |
|
|
1390 | |
|
|
1391 | ev_free (anfds); anfdmax = 0; |
1016 | |
1392 | |
1017 | /* have to use the microsoft-never-gets-it-right macro */ |
1393 | /* have to use the microsoft-never-gets-it-right macro */ |
1018 | array_free (fdchange, EMPTY); |
1394 | array_free (fdchange, EMPTY); |
1019 | array_free (timer, EMPTY); |
1395 | array_free (timer, EMPTY); |
1020 | #if EV_PERIODIC_ENABLE |
1396 | #if EV_PERIODIC_ENABLE |
1021 | array_free (periodic, EMPTY); |
1397 | array_free (periodic, EMPTY); |
1022 | #endif |
1398 | #endif |
|
|
1399 | #if EV_FORK_ENABLE |
|
|
1400 | array_free (fork, EMPTY); |
|
|
1401 | #endif |
1023 | array_free (prepare, EMPTY); |
1402 | array_free (prepare, EMPTY); |
1024 | array_free (check, EMPTY); |
1403 | array_free (check, EMPTY); |
|
|
1404 | #if EV_ASYNC_ENABLE |
|
|
1405 | array_free (async, EMPTY); |
|
|
1406 | #endif |
1025 | |
1407 | |
1026 | backend = 0; |
1408 | backend = 0; |
1027 | } |
1409 | } |
1028 | |
1410 | |
|
|
1411 | #if EV_USE_INOTIFY |
1029 | void inline_size infy_fork (EV_P); |
1412 | void inline_size infy_fork (EV_P); |
|
|
1413 | #endif |
1030 | |
1414 | |
1031 | void inline_size |
1415 | void inline_size |
1032 | loop_fork (EV_P) |
1416 | loop_fork (EV_P) |
1033 | { |
1417 | { |
1034 | #if EV_USE_PORT |
1418 | #if EV_USE_PORT |
… | |
… | |
1042 | #endif |
1426 | #endif |
1043 | #if EV_USE_INOTIFY |
1427 | #if EV_USE_INOTIFY |
1044 | infy_fork (EV_A); |
1428 | infy_fork (EV_A); |
1045 | #endif |
1429 | #endif |
1046 | |
1430 | |
1047 | if (ev_is_active (&sigev)) |
1431 | if (ev_is_active (&pipeev)) |
1048 | { |
1432 | { |
1049 | /* default loop */ |
1433 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1434 | /* while we modify the fd vars */ |
|
|
1435 | gotsig = 1; |
|
|
1436 | #if EV_ASYNC_ENABLE |
|
|
1437 | gotasync = 1; |
|
|
1438 | #endif |
1050 | |
1439 | |
1051 | ev_ref (EV_A); |
1440 | ev_ref (EV_A); |
1052 | ev_io_stop (EV_A_ &sigev); |
1441 | ev_io_stop (EV_A_ &pipeev); |
|
|
1442 | |
|
|
1443 | #if EV_USE_EVENTFD |
|
|
1444 | if (evfd >= 0) |
|
|
1445 | close (evfd); |
|
|
1446 | #endif |
|
|
1447 | |
|
|
1448 | if (evpipe [0] >= 0) |
|
|
1449 | { |
1053 | close (sigpipe [0]); |
1450 | close (evpipe [0]); |
1054 | close (sigpipe [1]); |
1451 | close (evpipe [1]); |
|
|
1452 | } |
1055 | |
1453 | |
1056 | while (pipe (sigpipe)) |
|
|
1057 | syserr ("(libev) error creating pipe"); |
|
|
1058 | |
|
|
1059 | siginit (EV_A); |
1454 | evpipe_init (EV_A); |
|
|
1455 | /* now iterate over everything, in case we missed something */ |
|
|
1456 | pipecb (EV_A_ &pipeev, EV_READ); |
1060 | } |
1457 | } |
1061 | |
1458 | |
1062 | postfork = 0; |
1459 | postfork = 0; |
1063 | } |
1460 | } |
1064 | |
1461 | |
… | |
… | |
1086 | } |
1483 | } |
1087 | |
1484 | |
1088 | void |
1485 | void |
1089 | ev_loop_fork (EV_P) |
1486 | ev_loop_fork (EV_P) |
1090 | { |
1487 | { |
1091 | postfork = 1; |
1488 | postfork = 1; /* must be in line with ev_default_fork */ |
1092 | } |
1489 | } |
1093 | |
|
|
1094 | #endif |
1490 | #endif |
1095 | |
1491 | |
1096 | #if EV_MULTIPLICITY |
1492 | #if EV_MULTIPLICITY |
1097 | struct ev_loop * |
1493 | struct ev_loop * |
1098 | ev_default_loop_init (unsigned int flags) |
1494 | ev_default_loop_init (unsigned int flags) |
1099 | #else |
1495 | #else |
1100 | int |
1496 | int |
1101 | ev_default_loop (unsigned int flags) |
1497 | ev_default_loop (unsigned int flags) |
1102 | #endif |
1498 | #endif |
1103 | { |
1499 | { |
1104 | if (sigpipe [0] == sigpipe [1]) |
|
|
1105 | if (pipe (sigpipe)) |
|
|
1106 | return 0; |
|
|
1107 | |
|
|
1108 | if (!ev_default_loop_ptr) |
1500 | if (!ev_default_loop_ptr) |
1109 | { |
1501 | { |
1110 | #if EV_MULTIPLICITY |
1502 | #if EV_MULTIPLICITY |
1111 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1503 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1112 | #else |
1504 | #else |
… | |
… | |
1115 | |
1507 | |
1116 | loop_init (EV_A_ flags); |
1508 | loop_init (EV_A_ flags); |
1117 | |
1509 | |
1118 | if (ev_backend (EV_A)) |
1510 | if (ev_backend (EV_A)) |
1119 | { |
1511 | { |
1120 | siginit (EV_A); |
|
|
1121 | |
|
|
1122 | #ifndef _WIN32 |
1512 | #ifndef _WIN32 |
1123 | ev_signal_init (&childev, childcb, SIGCHLD); |
1513 | ev_signal_init (&childev, childcb, SIGCHLD); |
1124 | ev_set_priority (&childev, EV_MAXPRI); |
1514 | ev_set_priority (&childev, EV_MAXPRI); |
1125 | ev_signal_start (EV_A_ &childev); |
1515 | ev_signal_start (EV_A_ &childev); |
1126 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1516 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1143 | #ifndef _WIN32 |
1533 | #ifndef _WIN32 |
1144 | ev_ref (EV_A); /* child watcher */ |
1534 | ev_ref (EV_A); /* child watcher */ |
1145 | ev_signal_stop (EV_A_ &childev); |
1535 | ev_signal_stop (EV_A_ &childev); |
1146 | #endif |
1536 | #endif |
1147 | |
1537 | |
1148 | ev_ref (EV_A); /* signal watcher */ |
|
|
1149 | ev_io_stop (EV_A_ &sigev); |
|
|
1150 | |
|
|
1151 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1152 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1153 | |
|
|
1154 | loop_destroy (EV_A); |
1538 | loop_destroy (EV_A); |
1155 | } |
1539 | } |
1156 | |
1540 | |
1157 | void |
1541 | void |
1158 | ev_default_fork (void) |
1542 | ev_default_fork (void) |
… | |
… | |
1160 | #if EV_MULTIPLICITY |
1544 | #if EV_MULTIPLICITY |
1161 | struct ev_loop *loop = ev_default_loop_ptr; |
1545 | struct ev_loop *loop = ev_default_loop_ptr; |
1162 | #endif |
1546 | #endif |
1163 | |
1547 | |
1164 | if (backend) |
1548 | if (backend) |
1165 | postfork = 1; |
1549 | postfork = 1; /* must be in line with ev_loop_fork */ |
1166 | } |
1550 | } |
1167 | |
1551 | |
1168 | /*****************************************************************************/ |
1552 | /*****************************************************************************/ |
1169 | |
1553 | |
1170 | void |
1554 | void |
… | |
… | |
1190 | p->w->pending = 0; |
1574 | p->w->pending = 0; |
1191 | EV_CB_INVOKE (p->w, p->events); |
1575 | EV_CB_INVOKE (p->w, p->events); |
1192 | } |
1576 | } |
1193 | } |
1577 | } |
1194 | } |
1578 | } |
1195 | |
|
|
1196 | void inline_size |
|
|
1197 | timers_reify (EV_P) |
|
|
1198 | { |
|
|
1199 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
|
|
1200 | { |
|
|
1201 | ev_timer *w = timers [0]; |
|
|
1202 | |
|
|
1203 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1204 | |
|
|
1205 | /* first reschedule or stop timer */ |
|
|
1206 | if (w->repeat) |
|
|
1207 | { |
|
|
1208 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1209 | |
|
|
1210 | ((WT)w)->at += w->repeat; |
|
|
1211 | if (((WT)w)->at < mn_now) |
|
|
1212 | ((WT)w)->at = mn_now; |
|
|
1213 | |
|
|
1214 | downheap ((WT *)timers, timercnt, 0); |
|
|
1215 | } |
|
|
1216 | else |
|
|
1217 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1218 | |
|
|
1219 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1220 | } |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | #if EV_PERIODIC_ENABLE |
|
|
1224 | void inline_size |
|
|
1225 | periodics_reify (EV_P) |
|
|
1226 | { |
|
|
1227 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1228 | { |
|
|
1229 | ev_periodic *w = periodics [0]; |
|
|
1230 | |
|
|
1231 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1232 | |
|
|
1233 | /* first reschedule or stop timer */ |
|
|
1234 | if (w->reschedule_cb) |
|
|
1235 | { |
|
|
1236 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */); |
|
|
1237 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1238 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1239 | } |
|
|
1240 | else if (w->interval) |
|
|
1241 | { |
|
|
1242 | ((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval; |
|
|
1243 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1244 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1245 | } |
|
|
1246 | else |
|
|
1247 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1248 | |
|
|
1249 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1250 | } |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | static void noinline |
|
|
1254 | periodics_reschedule (EV_P) |
|
|
1255 | { |
|
|
1256 | int i; |
|
|
1257 | |
|
|
1258 | /* adjust periodics after time jump */ |
|
|
1259 | for (i = 0; i < periodiccnt; ++i) |
|
|
1260 | { |
|
|
1261 | ev_periodic *w = periodics [i]; |
|
|
1262 | |
|
|
1263 | if (w->reschedule_cb) |
|
|
1264 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1265 | else if (w->interval) |
|
|
1266 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | /* now rebuild the heap */ |
|
|
1270 | for (i = periodiccnt >> 1; i--; ) |
|
|
1271 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1272 | } |
|
|
1273 | #endif |
|
|
1274 | |
1579 | |
1275 | #if EV_IDLE_ENABLE |
1580 | #if EV_IDLE_ENABLE |
1276 | void inline_size |
1581 | void inline_size |
1277 | idle_reify (EV_P) |
1582 | idle_reify (EV_P) |
1278 | { |
1583 | { |
… | |
… | |
1293 | } |
1598 | } |
1294 | } |
1599 | } |
1295 | } |
1600 | } |
1296 | #endif |
1601 | #endif |
1297 | |
1602 | |
1298 | int inline_size |
1603 | void inline_size |
1299 | time_update_monotonic (EV_P) |
1604 | timers_reify (EV_P) |
1300 | { |
1605 | { |
|
|
1606 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
1607 | { |
|
|
1608 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1609 | |
|
|
1610 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1611 | |
|
|
1612 | /* first reschedule or stop timer */ |
|
|
1613 | if (w->repeat) |
|
|
1614 | { |
|
|
1615 | ev_at (w) += w->repeat; |
|
|
1616 | if (ev_at (w) < mn_now) |
|
|
1617 | ev_at (w) = mn_now; |
|
|
1618 | |
|
|
1619 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1620 | |
|
|
1621 | ANHE_at_set (timers [HEAP0]); |
|
|
1622 | downheap (timers, timercnt, HEAP0); |
|
|
1623 | } |
|
|
1624 | else |
|
|
1625 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1626 | |
|
|
1627 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1628 | } |
|
|
1629 | } |
|
|
1630 | |
|
|
1631 | #if EV_PERIODIC_ENABLE |
|
|
1632 | void inline_size |
|
|
1633 | periodics_reify (EV_P) |
|
|
1634 | { |
|
|
1635 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
1636 | { |
|
|
1637 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1638 | |
|
|
1639 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1640 | |
|
|
1641 | /* first reschedule or stop timer */ |
|
|
1642 | if (w->reschedule_cb) |
|
|
1643 | { |
|
|
1644 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1645 | |
|
|
1646 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1647 | |
|
|
1648 | ANHE_at_set (periodics [HEAP0]); |
|
|
1649 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1650 | } |
|
|
1651 | else if (w->interval) |
|
|
1652 | { |
|
|
1653 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1654 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
|
|
1655 | |
|
|
1656 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) >= ev_rt_now)); |
|
|
1657 | |
|
|
1658 | ANHE_at_set (periodics [HEAP0]); |
|
|
1659 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1660 | } |
|
|
1661 | else |
|
|
1662 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1663 | |
|
|
1664 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1665 | } |
|
|
1666 | } |
|
|
1667 | |
|
|
1668 | static void noinline |
|
|
1669 | periodics_reschedule (EV_P) |
|
|
1670 | { |
|
|
1671 | int i; |
|
|
1672 | |
|
|
1673 | /* adjust periodics after time jump */ |
|
|
1674 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
1675 | { |
|
|
1676 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
1677 | |
|
|
1678 | if (w->reschedule_cb) |
|
|
1679 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1680 | else if (w->interval) |
|
|
1681 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1682 | |
|
|
1683 | ANHE_at_set (periodics [i]); |
|
|
1684 | } |
|
|
1685 | |
|
|
1686 | /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ |
|
|
1687 | /* also, this is easy and corretc for both 2-heaps and 4-heaps */ |
|
|
1688 | for (i = 0; i < periodiccnt; ++i) |
|
|
1689 | upheap (periodics, i + HEAP0); |
|
|
1690 | } |
|
|
1691 | #endif |
|
|
1692 | |
|
|
1693 | void inline_speed |
|
|
1694 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1695 | { |
|
|
1696 | int i; |
|
|
1697 | |
|
|
1698 | #if EV_USE_MONOTONIC |
|
|
1699 | if (expect_true (have_monotonic)) |
|
|
1700 | { |
|
|
1701 | ev_tstamp odiff = rtmn_diff; |
|
|
1702 | |
1301 | mn_now = get_clock (); |
1703 | mn_now = get_clock (); |
1302 | |
1704 | |
|
|
1705 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1706 | /* interpolate in the meantime */ |
1303 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1707 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1304 | { |
1708 | { |
1305 | ev_rt_now = rtmn_diff + mn_now; |
1709 | ev_rt_now = rtmn_diff + mn_now; |
1306 | return 0; |
1710 | return; |
1307 | } |
1711 | } |
1308 | else |
1712 | |
1309 | { |
|
|
1310 | now_floor = mn_now; |
1713 | now_floor = mn_now; |
1311 | ev_rt_now = ev_time (); |
1714 | ev_rt_now = ev_time (); |
1312 | return 1; |
|
|
1313 | } |
|
|
1314 | } |
|
|
1315 | |
1715 | |
1316 | void inline_size |
1716 | /* loop a few times, before making important decisions. |
1317 | time_update (EV_P) |
1717 | * on the choice of "4": one iteration isn't enough, |
1318 | { |
1718 | * in case we get preempted during the calls to |
1319 | int i; |
1719 | * ev_time and get_clock. a second call is almost guaranteed |
1320 | |
1720 | * to succeed in that case, though. and looping a few more times |
1321 | #if EV_USE_MONOTONIC |
1721 | * doesn't hurt either as we only do this on time-jumps or |
1322 | if (expect_true (have_monotonic)) |
1722 | * in the unlikely event of having been preempted here. |
1323 | { |
1723 | */ |
1324 | if (time_update_monotonic (EV_A)) |
1724 | for (i = 4; --i; ) |
1325 | { |
1725 | { |
1326 | ev_tstamp odiff = rtmn_diff; |
|
|
1327 | |
|
|
1328 | /* loop a few times, before making important decisions. |
|
|
1329 | * on the choice of "4": one iteration isn't enough, |
|
|
1330 | * in case we get preempted during the calls to |
|
|
1331 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1332 | * to succeed in that case, though. and looping a few more times |
|
|
1333 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1334 | * in the unlikely event of having been preempted here. |
|
|
1335 | */ |
|
|
1336 | for (i = 4; --i; ) |
|
|
1337 | { |
|
|
1338 | rtmn_diff = ev_rt_now - mn_now; |
1726 | rtmn_diff = ev_rt_now - mn_now; |
1339 | |
1727 | |
1340 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
1728 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1341 | return; /* all is well */ |
1729 | return; /* all is well */ |
1342 | |
1730 | |
1343 | ev_rt_now = ev_time (); |
1731 | ev_rt_now = ev_time (); |
1344 | mn_now = get_clock (); |
1732 | mn_now = get_clock (); |
1345 | now_floor = mn_now; |
1733 | now_floor = mn_now; |
1346 | } |
1734 | } |
1347 | |
1735 | |
1348 | # if EV_PERIODIC_ENABLE |
1736 | # if EV_PERIODIC_ENABLE |
1349 | periodics_reschedule (EV_A); |
1737 | periodics_reschedule (EV_A); |
1350 | # endif |
1738 | # endif |
1351 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1739 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1352 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1740 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1353 | } |
|
|
1354 | } |
1741 | } |
1355 | else |
1742 | else |
1356 | #endif |
1743 | #endif |
1357 | { |
1744 | { |
1358 | ev_rt_now = ev_time (); |
1745 | ev_rt_now = ev_time (); |
1359 | |
1746 | |
1360 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
1747 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
1361 | { |
1748 | { |
1362 | #if EV_PERIODIC_ENABLE |
1749 | #if EV_PERIODIC_ENABLE |
1363 | periodics_reschedule (EV_A); |
1750 | periodics_reschedule (EV_A); |
1364 | #endif |
1751 | #endif |
1365 | |
|
|
1366 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1752 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1367 | for (i = 0; i < timercnt; ++i) |
1753 | for (i = 0; i < timercnt; ++i) |
|
|
1754 | { |
|
|
1755 | ANHE *he = timers + i + HEAP0; |
1368 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
1756 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
|
|
1757 | ANHE_at_set (*he); |
|
|
1758 | } |
1369 | } |
1759 | } |
1370 | |
1760 | |
1371 | mn_now = ev_rt_now; |
1761 | mn_now = ev_rt_now; |
1372 | } |
1762 | } |
1373 | } |
1763 | } |
… | |
… | |
1387 | static int loop_done; |
1777 | static int loop_done; |
1388 | |
1778 | |
1389 | void |
1779 | void |
1390 | ev_loop (EV_P_ int flags) |
1780 | ev_loop (EV_P_ int flags) |
1391 | { |
1781 | { |
1392 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1782 | loop_done = EVUNLOOP_CANCEL; |
1393 | ? EVUNLOOP_ONE |
|
|
1394 | : EVUNLOOP_CANCEL; |
|
|
1395 | |
1783 | |
1396 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1784 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1397 | |
1785 | |
1398 | do |
1786 | do |
1399 | { |
1787 | { |
… | |
… | |
1433 | /* update fd-related kernel structures */ |
1821 | /* update fd-related kernel structures */ |
1434 | fd_reify (EV_A); |
1822 | fd_reify (EV_A); |
1435 | |
1823 | |
1436 | /* calculate blocking time */ |
1824 | /* calculate blocking time */ |
1437 | { |
1825 | { |
1438 | ev_tstamp block; |
1826 | ev_tstamp waittime = 0.; |
|
|
1827 | ev_tstamp sleeptime = 0.; |
1439 | |
1828 | |
1440 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1829 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1441 | block = 0.; /* do not block at all */ |
|
|
1442 | else |
|
|
1443 | { |
1830 | { |
1444 | /* update time to cancel out callback processing overhead */ |
1831 | /* update time to cancel out callback processing overhead */ |
1445 | #if EV_USE_MONOTONIC |
|
|
1446 | if (expect_true (have_monotonic)) |
|
|
1447 | time_update_monotonic (EV_A); |
1832 | time_update (EV_A_ 1e100); |
1448 | else |
|
|
1449 | #endif |
|
|
1450 | { |
|
|
1451 | ev_rt_now = ev_time (); |
|
|
1452 | mn_now = ev_rt_now; |
|
|
1453 | } |
|
|
1454 | |
1833 | |
1455 | block = MAX_BLOCKTIME; |
1834 | waittime = MAX_BLOCKTIME; |
1456 | |
1835 | |
1457 | if (timercnt) |
1836 | if (timercnt) |
1458 | { |
1837 | { |
1459 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1838 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1460 | if (block > to) block = to; |
1839 | if (waittime > to) waittime = to; |
1461 | } |
1840 | } |
1462 | |
1841 | |
1463 | #if EV_PERIODIC_ENABLE |
1842 | #if EV_PERIODIC_ENABLE |
1464 | if (periodiccnt) |
1843 | if (periodiccnt) |
1465 | { |
1844 | { |
1466 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1845 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1467 | if (block > to) block = to; |
1846 | if (waittime > to) waittime = to; |
1468 | } |
1847 | } |
1469 | #endif |
1848 | #endif |
1470 | |
1849 | |
1471 | if (expect_false (block < 0.)) block = 0.; |
1850 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1851 | waittime = timeout_blocktime; |
|
|
1852 | |
|
|
1853 | sleeptime = waittime - backend_fudge; |
|
|
1854 | |
|
|
1855 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1856 | sleeptime = io_blocktime; |
|
|
1857 | |
|
|
1858 | if (sleeptime) |
|
|
1859 | { |
|
|
1860 | ev_sleep (sleeptime); |
|
|
1861 | waittime -= sleeptime; |
|
|
1862 | } |
1472 | } |
1863 | } |
1473 | |
1864 | |
1474 | ++loop_count; |
1865 | ++loop_count; |
1475 | backend_poll (EV_A_ block); |
1866 | backend_poll (EV_A_ waittime); |
|
|
1867 | |
|
|
1868 | /* update ev_rt_now, do magic */ |
|
|
1869 | time_update (EV_A_ waittime + sleeptime); |
1476 | } |
1870 | } |
1477 | |
|
|
1478 | /* update ev_rt_now, do magic */ |
|
|
1479 | time_update (EV_A); |
|
|
1480 | |
1871 | |
1481 | /* queue pending timers and reschedule them */ |
1872 | /* queue pending timers and reschedule them */ |
1482 | timers_reify (EV_A); /* relative timers called last */ |
1873 | timers_reify (EV_A); /* relative timers called last */ |
1483 | #if EV_PERIODIC_ENABLE |
1874 | #if EV_PERIODIC_ENABLE |
1484 | periodics_reify (EV_A); /* absolute timers called first */ |
1875 | periodics_reify (EV_A); /* absolute timers called first */ |
… | |
… | |
1492 | /* queue check watchers, to be executed first */ |
1883 | /* queue check watchers, to be executed first */ |
1493 | if (expect_false (checkcnt)) |
1884 | if (expect_false (checkcnt)) |
1494 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1885 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1495 | |
1886 | |
1496 | call_pending (EV_A); |
1887 | call_pending (EV_A); |
1497 | |
|
|
1498 | } |
1888 | } |
1499 | while (expect_true (activecnt && !loop_done)); |
1889 | while (expect_true ( |
|
|
1890 | activecnt |
|
|
1891 | && !loop_done |
|
|
1892 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1893 | )); |
1500 | |
1894 | |
1501 | if (loop_done == EVUNLOOP_ONE) |
1895 | if (loop_done == EVUNLOOP_ONE) |
1502 | loop_done = EVUNLOOP_CANCEL; |
1896 | loop_done = EVUNLOOP_CANCEL; |
1503 | } |
1897 | } |
1504 | |
1898 | |
… | |
… | |
1595 | |
1989 | |
1596 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1990 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1597 | |
1991 | |
1598 | ev_start (EV_A_ (W)w, 1); |
1992 | ev_start (EV_A_ (W)w, 1); |
1599 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1993 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1600 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1994 | wlist_add (&anfds[fd].head, (WL)w); |
1601 | |
1995 | |
1602 | fd_change (EV_A_ fd); |
1996 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1997 | w->events &= ~EV_IOFDSET; |
1603 | } |
1998 | } |
1604 | |
1999 | |
1605 | void noinline |
2000 | void noinline |
1606 | ev_io_stop (EV_P_ ev_io *w) |
2001 | ev_io_stop (EV_P_ ev_io *w) |
1607 | { |
2002 | { |
1608 | clear_pending (EV_A_ (W)w); |
2003 | clear_pending (EV_A_ (W)w); |
1609 | if (expect_false (!ev_is_active (w))) |
2004 | if (expect_false (!ev_is_active (w))) |
1610 | return; |
2005 | return; |
1611 | |
2006 | |
1612 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2007 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1613 | |
2008 | |
1614 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2009 | wlist_del (&anfds[w->fd].head, (WL)w); |
1615 | ev_stop (EV_A_ (W)w); |
2010 | ev_stop (EV_A_ (W)w); |
1616 | |
2011 | |
1617 | fd_change (EV_A_ w->fd); |
2012 | fd_change (EV_A_ w->fd, 1); |
1618 | } |
2013 | } |
1619 | |
2014 | |
1620 | void noinline |
2015 | void noinline |
1621 | ev_timer_start (EV_P_ ev_timer *w) |
2016 | ev_timer_start (EV_P_ ev_timer *w) |
1622 | { |
2017 | { |
1623 | if (expect_false (ev_is_active (w))) |
2018 | if (expect_false (ev_is_active (w))) |
1624 | return; |
2019 | return; |
1625 | |
2020 | |
1626 | ((WT)w)->at += mn_now; |
2021 | ev_at (w) += mn_now; |
1627 | |
2022 | |
1628 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2023 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1629 | |
2024 | |
1630 | ev_start (EV_A_ (W)w, ++timercnt); |
2025 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
1631 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
2026 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1632 | timers [timercnt - 1] = w; |
2027 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1633 | upheap ((WT *)timers, timercnt - 1); |
2028 | ANHE_at_set (timers [ev_active (w)]); |
|
|
2029 | upheap (timers, ev_active (w)); |
1634 | |
2030 | |
1635 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
2031 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1636 | } |
2032 | } |
1637 | |
2033 | |
1638 | void noinline |
2034 | void noinline |
1639 | ev_timer_stop (EV_P_ ev_timer *w) |
2035 | ev_timer_stop (EV_P_ ev_timer *w) |
1640 | { |
2036 | { |
1641 | clear_pending (EV_A_ (W)w); |
2037 | clear_pending (EV_A_ (W)w); |
1642 | if (expect_false (!ev_is_active (w))) |
2038 | if (expect_false (!ev_is_active (w))) |
1643 | return; |
2039 | return; |
1644 | |
2040 | |
1645 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1646 | |
|
|
1647 | { |
2041 | { |
1648 | int active = ((W)w)->active; |
2042 | int active = ev_active (w); |
1649 | |
2043 | |
|
|
2044 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2045 | |
1650 | if (expect_true (--active < --timercnt)) |
2046 | if (expect_true (active < timercnt + HEAP0 - 1)) |
1651 | { |
2047 | { |
1652 | timers [active] = timers [timercnt]; |
2048 | timers [active] = timers [timercnt + HEAP0 - 1]; |
1653 | adjustheap ((WT *)timers, timercnt, active); |
2049 | adjustheap (timers, timercnt, active); |
1654 | } |
2050 | } |
|
|
2051 | |
|
|
2052 | --timercnt; |
1655 | } |
2053 | } |
1656 | |
2054 | |
1657 | ((WT)w)->at -= mn_now; |
2055 | ev_at (w) -= mn_now; |
1658 | |
2056 | |
1659 | ev_stop (EV_A_ (W)w); |
2057 | ev_stop (EV_A_ (W)w); |
1660 | } |
2058 | } |
1661 | |
2059 | |
1662 | void noinline |
2060 | void noinline |
… | |
… | |
1664 | { |
2062 | { |
1665 | if (ev_is_active (w)) |
2063 | if (ev_is_active (w)) |
1666 | { |
2064 | { |
1667 | if (w->repeat) |
2065 | if (w->repeat) |
1668 | { |
2066 | { |
1669 | ((WT)w)->at = mn_now + w->repeat; |
2067 | ev_at (w) = mn_now + w->repeat; |
|
|
2068 | ANHE_at_set (timers [ev_active (w)]); |
1670 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2069 | adjustheap (timers, timercnt, ev_active (w)); |
1671 | } |
2070 | } |
1672 | else |
2071 | else |
1673 | ev_timer_stop (EV_A_ w); |
2072 | ev_timer_stop (EV_A_ w); |
1674 | } |
2073 | } |
1675 | else if (w->repeat) |
2074 | else if (w->repeat) |
1676 | { |
2075 | { |
1677 | w->at = w->repeat; |
2076 | ev_at (w) = w->repeat; |
1678 | ev_timer_start (EV_A_ w); |
2077 | ev_timer_start (EV_A_ w); |
1679 | } |
2078 | } |
1680 | } |
2079 | } |
1681 | |
2080 | |
1682 | #if EV_PERIODIC_ENABLE |
2081 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1685 | { |
2084 | { |
1686 | if (expect_false (ev_is_active (w))) |
2085 | if (expect_false (ev_is_active (w))) |
1687 | return; |
2086 | return; |
1688 | |
2087 | |
1689 | if (w->reschedule_cb) |
2088 | if (w->reschedule_cb) |
1690 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2089 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1691 | else if (w->interval) |
2090 | else if (w->interval) |
1692 | { |
2091 | { |
1693 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2092 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1694 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2093 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1695 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2094 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1696 | } |
2095 | } |
1697 | else |
2096 | else |
1698 | ((WT)w)->at = w->offset; |
2097 | ev_at (w) = w->offset; |
1699 | |
2098 | |
1700 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2099 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
1701 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2100 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1702 | periodics [periodiccnt - 1] = w; |
2101 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1703 | upheap ((WT *)periodics, periodiccnt - 1); |
2102 | ANHE_at_set (periodics [ev_active (w)]); |
|
|
2103 | upheap (periodics, ev_active (w)); |
1704 | |
2104 | |
1705 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
2105 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1706 | } |
2106 | } |
1707 | |
2107 | |
1708 | void noinline |
2108 | void noinline |
1709 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2109 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1710 | { |
2110 | { |
1711 | clear_pending (EV_A_ (W)w); |
2111 | clear_pending (EV_A_ (W)w); |
1712 | if (expect_false (!ev_is_active (w))) |
2112 | if (expect_false (!ev_is_active (w))) |
1713 | return; |
2113 | return; |
1714 | |
2114 | |
1715 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1716 | |
|
|
1717 | { |
2115 | { |
1718 | int active = ((W)w)->active; |
2116 | int active = ev_active (w); |
1719 | |
2117 | |
|
|
2118 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2119 | |
1720 | if (expect_true (--active < --periodiccnt)) |
2120 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
1721 | { |
2121 | { |
1722 | periodics [active] = periodics [periodiccnt]; |
2122 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
1723 | adjustheap ((WT *)periodics, periodiccnt, active); |
2123 | adjustheap (periodics, periodiccnt, active); |
1724 | } |
2124 | } |
|
|
2125 | |
|
|
2126 | --periodiccnt; |
1725 | } |
2127 | } |
1726 | |
2128 | |
1727 | ev_stop (EV_A_ (W)w); |
2129 | ev_stop (EV_A_ (W)w); |
1728 | } |
2130 | } |
1729 | |
2131 | |
… | |
… | |
1749 | if (expect_false (ev_is_active (w))) |
2151 | if (expect_false (ev_is_active (w))) |
1750 | return; |
2152 | return; |
1751 | |
2153 | |
1752 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2154 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1753 | |
2155 | |
|
|
2156 | evpipe_init (EV_A); |
|
|
2157 | |
|
|
2158 | { |
|
|
2159 | #ifndef _WIN32 |
|
|
2160 | sigset_t full, prev; |
|
|
2161 | sigfillset (&full); |
|
|
2162 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2163 | #endif |
|
|
2164 | |
|
|
2165 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2166 | |
|
|
2167 | #ifndef _WIN32 |
|
|
2168 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2169 | #endif |
|
|
2170 | } |
|
|
2171 | |
1754 | ev_start (EV_A_ (W)w, 1); |
2172 | ev_start (EV_A_ (W)w, 1); |
1755 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1756 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2173 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1757 | |
2174 | |
1758 | if (!((WL)w)->next) |
2175 | if (!((WL)w)->next) |
1759 | { |
2176 | { |
1760 | #if _WIN32 |
2177 | #if _WIN32 |
1761 | signal (w->signum, sighandler); |
2178 | signal (w->signum, ev_sighandler); |
1762 | #else |
2179 | #else |
1763 | struct sigaction sa; |
2180 | struct sigaction sa; |
1764 | sa.sa_handler = sighandler; |
2181 | sa.sa_handler = ev_sighandler; |
1765 | sigfillset (&sa.sa_mask); |
2182 | sigfillset (&sa.sa_mask); |
1766 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2183 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1767 | sigaction (w->signum, &sa, 0); |
2184 | sigaction (w->signum, &sa, 0); |
1768 | #endif |
2185 | #endif |
1769 | } |
2186 | } |
… | |
… | |
1774 | { |
2191 | { |
1775 | clear_pending (EV_A_ (W)w); |
2192 | clear_pending (EV_A_ (W)w); |
1776 | if (expect_false (!ev_is_active (w))) |
2193 | if (expect_false (!ev_is_active (w))) |
1777 | return; |
2194 | return; |
1778 | |
2195 | |
1779 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2196 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1780 | ev_stop (EV_A_ (W)w); |
2197 | ev_stop (EV_A_ (W)w); |
1781 | |
2198 | |
1782 | if (!signals [w->signum - 1].head) |
2199 | if (!signals [w->signum - 1].head) |
1783 | signal (w->signum, SIG_DFL); |
2200 | signal (w->signum, SIG_DFL); |
1784 | } |
2201 | } |
… | |
… | |
1791 | #endif |
2208 | #endif |
1792 | if (expect_false (ev_is_active (w))) |
2209 | if (expect_false (ev_is_active (w))) |
1793 | return; |
2210 | return; |
1794 | |
2211 | |
1795 | ev_start (EV_A_ (W)w, 1); |
2212 | ev_start (EV_A_ (W)w, 1); |
1796 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2213 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1797 | } |
2214 | } |
1798 | |
2215 | |
1799 | void |
2216 | void |
1800 | ev_child_stop (EV_P_ ev_child *w) |
2217 | ev_child_stop (EV_P_ ev_child *w) |
1801 | { |
2218 | { |
1802 | clear_pending (EV_A_ (W)w); |
2219 | clear_pending (EV_A_ (W)w); |
1803 | if (expect_false (!ev_is_active (w))) |
2220 | if (expect_false (!ev_is_active (w))) |
1804 | return; |
2221 | return; |
1805 | |
2222 | |
1806 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2223 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1807 | ev_stop (EV_A_ (W)w); |
2224 | ev_stop (EV_A_ (W)w); |
1808 | } |
2225 | } |
1809 | |
2226 | |
1810 | #if EV_STAT_ENABLE |
2227 | #if EV_STAT_ENABLE |
1811 | |
2228 | |
… | |
… | |
1830 | if (w->wd < 0) |
2247 | if (w->wd < 0) |
1831 | { |
2248 | { |
1832 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2249 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
1833 | |
2250 | |
1834 | /* monitor some parent directory for speedup hints */ |
2251 | /* monitor some parent directory for speedup hints */ |
|
|
2252 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2253 | /* but an efficiency issue only */ |
1835 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2254 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
1836 | { |
2255 | { |
1837 | char path [4096]; |
2256 | char path [4096]; |
1838 | strcpy (path, w->path); |
2257 | strcpy (path, w->path); |
1839 | |
2258 | |
… | |
… | |
2084 | clear_pending (EV_A_ (W)w); |
2503 | clear_pending (EV_A_ (W)w); |
2085 | if (expect_false (!ev_is_active (w))) |
2504 | if (expect_false (!ev_is_active (w))) |
2086 | return; |
2505 | return; |
2087 | |
2506 | |
2088 | { |
2507 | { |
2089 | int active = ((W)w)->active; |
2508 | int active = ev_active (w); |
2090 | |
2509 | |
2091 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2510 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2092 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
2511 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
2093 | |
2512 | |
2094 | ev_stop (EV_A_ (W)w); |
2513 | ev_stop (EV_A_ (W)w); |
2095 | --idleall; |
2514 | --idleall; |
2096 | } |
2515 | } |
2097 | } |
2516 | } |
… | |
… | |
2114 | clear_pending (EV_A_ (W)w); |
2533 | clear_pending (EV_A_ (W)w); |
2115 | if (expect_false (!ev_is_active (w))) |
2534 | if (expect_false (!ev_is_active (w))) |
2116 | return; |
2535 | return; |
2117 | |
2536 | |
2118 | { |
2537 | { |
2119 | int active = ((W)w)->active; |
2538 | int active = ev_active (w); |
|
|
2539 | |
2120 | prepares [active - 1] = prepares [--preparecnt]; |
2540 | prepares [active - 1] = prepares [--preparecnt]; |
2121 | ((W)prepares [active - 1])->active = active; |
2541 | ev_active (prepares [active - 1]) = active; |
2122 | } |
2542 | } |
2123 | |
2543 | |
2124 | ev_stop (EV_A_ (W)w); |
2544 | ev_stop (EV_A_ (W)w); |
2125 | } |
2545 | } |
2126 | |
2546 | |
… | |
… | |
2141 | clear_pending (EV_A_ (W)w); |
2561 | clear_pending (EV_A_ (W)w); |
2142 | if (expect_false (!ev_is_active (w))) |
2562 | if (expect_false (!ev_is_active (w))) |
2143 | return; |
2563 | return; |
2144 | |
2564 | |
2145 | { |
2565 | { |
2146 | int active = ((W)w)->active; |
2566 | int active = ev_active (w); |
|
|
2567 | |
2147 | checks [active - 1] = checks [--checkcnt]; |
2568 | checks [active - 1] = checks [--checkcnt]; |
2148 | ((W)checks [active - 1])->active = active; |
2569 | ev_active (checks [active - 1]) = active; |
2149 | } |
2570 | } |
2150 | |
2571 | |
2151 | ev_stop (EV_A_ (W)w); |
2572 | ev_stop (EV_A_ (W)w); |
2152 | } |
2573 | } |
2153 | |
2574 | |
2154 | #if EV_EMBED_ENABLE |
2575 | #if EV_EMBED_ENABLE |
2155 | void noinline |
2576 | void noinline |
2156 | ev_embed_sweep (EV_P_ ev_embed *w) |
2577 | ev_embed_sweep (EV_P_ ev_embed *w) |
2157 | { |
2578 | { |
2158 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
2579 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2159 | } |
2580 | } |
2160 | |
2581 | |
2161 | static void |
2582 | static void |
2162 | embed_cb (EV_P_ ev_io *io, int revents) |
2583 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2163 | { |
2584 | { |
2164 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2585 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2165 | |
2586 | |
2166 | if (ev_cb (w)) |
2587 | if (ev_cb (w)) |
2167 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2588 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2168 | else |
2589 | else |
2169 | ev_embed_sweep (loop, w); |
2590 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2170 | } |
2591 | } |
|
|
2592 | |
|
|
2593 | static void |
|
|
2594 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2595 | { |
|
|
2596 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2597 | |
|
|
2598 | { |
|
|
2599 | struct ev_loop *loop = w->other; |
|
|
2600 | |
|
|
2601 | while (fdchangecnt) |
|
|
2602 | { |
|
|
2603 | fd_reify (EV_A); |
|
|
2604 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2605 | } |
|
|
2606 | } |
|
|
2607 | } |
|
|
2608 | |
|
|
2609 | #if 0 |
|
|
2610 | static void |
|
|
2611 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2612 | { |
|
|
2613 | ev_idle_stop (EV_A_ idle); |
|
|
2614 | } |
|
|
2615 | #endif |
2171 | |
2616 | |
2172 | void |
2617 | void |
2173 | ev_embed_start (EV_P_ ev_embed *w) |
2618 | ev_embed_start (EV_P_ ev_embed *w) |
2174 | { |
2619 | { |
2175 | if (expect_false (ev_is_active (w))) |
2620 | if (expect_false (ev_is_active (w))) |
2176 | return; |
2621 | return; |
2177 | |
2622 | |
2178 | { |
2623 | { |
2179 | struct ev_loop *loop = w->loop; |
2624 | struct ev_loop *loop = w->other; |
2180 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2625 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2181 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
2626 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2182 | } |
2627 | } |
2183 | |
2628 | |
2184 | ev_set_priority (&w->io, ev_priority (w)); |
2629 | ev_set_priority (&w->io, ev_priority (w)); |
2185 | ev_io_start (EV_A_ &w->io); |
2630 | ev_io_start (EV_A_ &w->io); |
|
|
2631 | |
|
|
2632 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2633 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2634 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2635 | |
|
|
2636 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
2186 | |
2637 | |
2187 | ev_start (EV_A_ (W)w, 1); |
2638 | ev_start (EV_A_ (W)w, 1); |
2188 | } |
2639 | } |
2189 | |
2640 | |
2190 | void |
2641 | void |
… | |
… | |
2193 | clear_pending (EV_A_ (W)w); |
2644 | clear_pending (EV_A_ (W)w); |
2194 | if (expect_false (!ev_is_active (w))) |
2645 | if (expect_false (!ev_is_active (w))) |
2195 | return; |
2646 | return; |
2196 | |
2647 | |
2197 | ev_io_stop (EV_A_ &w->io); |
2648 | ev_io_stop (EV_A_ &w->io); |
|
|
2649 | ev_prepare_stop (EV_A_ &w->prepare); |
2198 | |
2650 | |
2199 | ev_stop (EV_A_ (W)w); |
2651 | ev_stop (EV_A_ (W)w); |
2200 | } |
2652 | } |
2201 | #endif |
2653 | #endif |
2202 | |
2654 | |
… | |
… | |
2218 | clear_pending (EV_A_ (W)w); |
2670 | clear_pending (EV_A_ (W)w); |
2219 | if (expect_false (!ev_is_active (w))) |
2671 | if (expect_false (!ev_is_active (w))) |
2220 | return; |
2672 | return; |
2221 | |
2673 | |
2222 | { |
2674 | { |
2223 | int active = ((W)w)->active; |
2675 | int active = ev_active (w); |
|
|
2676 | |
2224 | forks [active - 1] = forks [--forkcnt]; |
2677 | forks [active - 1] = forks [--forkcnt]; |
2225 | ((W)forks [active - 1])->active = active; |
2678 | ev_active (forks [active - 1]) = active; |
2226 | } |
2679 | } |
2227 | |
2680 | |
2228 | ev_stop (EV_A_ (W)w); |
2681 | ev_stop (EV_A_ (W)w); |
|
|
2682 | } |
|
|
2683 | #endif |
|
|
2684 | |
|
|
2685 | #if EV_ASYNC_ENABLE |
|
|
2686 | void |
|
|
2687 | ev_async_start (EV_P_ ev_async *w) |
|
|
2688 | { |
|
|
2689 | if (expect_false (ev_is_active (w))) |
|
|
2690 | return; |
|
|
2691 | |
|
|
2692 | evpipe_init (EV_A); |
|
|
2693 | |
|
|
2694 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2695 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2696 | asyncs [asynccnt - 1] = w; |
|
|
2697 | } |
|
|
2698 | |
|
|
2699 | void |
|
|
2700 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2701 | { |
|
|
2702 | clear_pending (EV_A_ (W)w); |
|
|
2703 | if (expect_false (!ev_is_active (w))) |
|
|
2704 | return; |
|
|
2705 | |
|
|
2706 | { |
|
|
2707 | int active = ev_active (w); |
|
|
2708 | |
|
|
2709 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2710 | ev_active (asyncs [active - 1]) = active; |
|
|
2711 | } |
|
|
2712 | |
|
|
2713 | ev_stop (EV_A_ (W)w); |
|
|
2714 | } |
|
|
2715 | |
|
|
2716 | void |
|
|
2717 | ev_async_send (EV_P_ ev_async *w) |
|
|
2718 | { |
|
|
2719 | w->sent = 1; |
|
|
2720 | evpipe_write (EV_A_ &gotasync); |
2229 | } |
2721 | } |
2230 | #endif |
2722 | #endif |
2231 | |
2723 | |
2232 | /*****************************************************************************/ |
2724 | /*****************************************************************************/ |
2233 | |
2725 | |
… | |
… | |
2291 | ev_timer_set (&once->to, timeout, 0.); |
2783 | ev_timer_set (&once->to, timeout, 0.); |
2292 | ev_timer_start (EV_A_ &once->to); |
2784 | ev_timer_start (EV_A_ &once->to); |
2293 | } |
2785 | } |
2294 | } |
2786 | } |
2295 | |
2787 | |
|
|
2788 | #if EV_MULTIPLICITY |
|
|
2789 | #include "ev_wrap.h" |
|
|
2790 | #endif |
|
|
2791 | |
2296 | #ifdef __cplusplus |
2792 | #ifdef __cplusplus |
2297 | } |
2793 | } |
2298 | #endif |
2794 | #endif |
2299 | |
2795 | |