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 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
196 | |
241 | |
197 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
198 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
199 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
200 | #endif |
245 | #endif |
… | |
… | |
202 | #ifndef CLOCK_REALTIME |
247 | #ifndef CLOCK_REALTIME |
203 | # undef EV_USE_REALTIME |
248 | # undef EV_USE_REALTIME |
204 | # define EV_USE_REALTIME 0 |
249 | # define EV_USE_REALTIME 0 |
205 | #endif |
250 | #endif |
206 | |
251 | |
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252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #if EV_USE_INOTIFY |
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264 | # include <sys/inotify.h> |
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265 | #endif |
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266 | |
207 | #if EV_SELECT_IS_WINSOCKET |
267 | #if EV_SELECT_IS_WINSOCKET |
208 | # include <winsock.h> |
268 | # include <winsock.h> |
209 | #endif |
269 | #endif |
210 | |
270 | |
211 | #if !EV_STAT_ENABLE |
271 | #if EV_USE_EVENTFD |
212 | # define EV_USE_INOTIFY 0 |
272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
213 | #endif |
276 | # endif |
214 | |
277 | int eventfd (unsigned int initval, int flags); |
215 | #if EV_USE_INOTIFY |
278 | # ifdef __cplusplus |
216 | # include <sys/inotify.h> |
279 | } |
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280 | # endif |
217 | #endif |
281 | #endif |
218 | |
282 | |
219 | /**/ |
283 | /**/ |
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284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
220 | |
294 | |
221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
295 | #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) */ |
296 | #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 */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
224 | |
298 | |
225 | #if __GNUC__ >= 3 |
299 | #if __GNUC__ >= 4 |
226 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
227 | # define inline_size static inline /* inline for codesize */ |
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228 | # if EV_MINIMAL |
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229 | # define noinline __attribute__ ((noinline)) |
301 | # define noinline __attribute__ ((noinline)) |
230 | # define inline_speed static noinline |
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231 | # else |
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232 | # define noinline |
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233 | # define inline_speed static inline |
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234 | # endif |
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235 | #else |
302 | #else |
236 | # define expect(expr,value) (expr) |
303 | # define expect(expr,value) (expr) |
237 | # define inline_speed static |
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238 | # define inline_size static |
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239 | # define noinline |
304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
240 | #endif |
308 | #endif |
241 | |
309 | |
242 | #define expect_false(expr) expect ((expr) != 0, 0) |
310 | #define expect_false(expr) expect ((expr) != 0, 0) |
243 | #define expect_true(expr) expect ((expr) != 0, 1) |
311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
244 | |
319 | |
245 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
246 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
247 | |
322 | |
248 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
… | |
… | |
250 | |
325 | |
251 | typedef ev_watcher *W; |
326 | typedef ev_watcher *W; |
252 | typedef ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
253 | typedef ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
254 | |
329 | |
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330 | #define ev_active(w) ((W)(w))->active |
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331 | #define ev_at(w) ((WT)(w))->at |
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332 | |
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333 | #if EV_USE_MONOTONIC |
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334 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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335 | /* giving it a reasonably high chance of working on typical architetcures */ |
255 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
336 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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337 | #endif |
256 | |
338 | |
257 | #ifdef _WIN32 |
339 | #ifdef _WIN32 |
258 | # include "ev_win32.c" |
340 | # include "ev_win32.c" |
259 | #endif |
341 | #endif |
260 | |
342 | |
… | |
… | |
281 | perror (msg); |
363 | perror (msg); |
282 | abort (); |
364 | abort (); |
283 | } |
365 | } |
284 | } |
366 | } |
285 | |
367 | |
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368 | static void * |
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369 | ev_realloc_emul (void *ptr, long size) |
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370 | { |
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371 | /* some systems, notably openbsd and darwin, fail to properly |
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372 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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373 | * the single unix specification, so work around them here. |
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374 | */ |
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375 | |
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376 | if (size) |
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377 | return realloc (ptr, size); |
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378 | |
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379 | free (ptr); |
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380 | return 0; |
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381 | } |
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382 | |
286 | static void *(*alloc)(void *ptr, long size); |
383 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
287 | |
384 | |
288 | void |
385 | void |
289 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
386 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
290 | { |
387 | { |
291 | alloc = cb; |
388 | alloc = cb; |
292 | } |
389 | } |
293 | |
390 | |
294 | inline_speed void * |
391 | inline_speed void * |
295 | ev_realloc (void *ptr, long size) |
392 | ev_realloc (void *ptr, long size) |
296 | { |
393 | { |
297 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
394 | ptr = alloc (ptr, size); |
298 | |
395 | |
299 | if (!ptr && size) |
396 | if (!ptr && size) |
300 | { |
397 | { |
301 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
398 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
302 | abort (); |
399 | abort (); |
… | |
… | |
396 | { |
493 | { |
397 | return ev_rt_now; |
494 | return ev_rt_now; |
398 | } |
495 | } |
399 | #endif |
496 | #endif |
400 | |
497 | |
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498 | void |
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499 | ev_sleep (ev_tstamp delay) |
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500 | { |
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501 | if (delay > 0.) |
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502 | { |
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503 | #if EV_USE_NANOSLEEP |
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504 | struct timespec ts; |
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505 | |
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506 | ts.tv_sec = (time_t)delay; |
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507 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
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508 | |
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509 | nanosleep (&ts, 0); |
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510 | #elif defined(_WIN32) |
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511 | Sleep ((unsigned long)(delay * 1e3)); |
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512 | #else |
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513 | struct timeval tv; |
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514 | |
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515 | tv.tv_sec = (time_t)delay; |
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516 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
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517 | |
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518 | select (0, 0, 0, 0, &tv); |
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519 | #endif |
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520 | } |
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521 | } |
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522 | |
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523 | /*****************************************************************************/ |
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524 | |
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525 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
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526 | |
401 | int inline_size |
527 | int inline_size |
402 | array_nextsize (int elem, int cur, int cnt) |
528 | array_nextsize (int elem, int cur, int cnt) |
403 | { |
529 | { |
404 | int ncur = cur + 1; |
530 | int ncur = cur + 1; |
405 | |
531 | |
406 | do |
532 | do |
407 | ncur <<= 1; |
533 | ncur <<= 1; |
408 | while (cnt > ncur); |
534 | while (cnt > ncur); |
409 | |
535 | |
410 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
536 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
411 | if (elem * ncur > 4096) |
537 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
412 | { |
538 | { |
413 | ncur *= elem; |
539 | ncur *= elem; |
414 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
540 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
415 | ncur = ncur - sizeof (void *) * 4; |
541 | ncur = ncur - sizeof (void *) * 4; |
416 | ncur /= elem; |
542 | ncur /= elem; |
417 | } |
543 | } |
418 | |
544 | |
419 | return ncur; |
545 | return ncur; |
420 | } |
546 | } |
421 | |
547 | |
422 | inline_speed void * |
548 | static noinline void * |
423 | array_realloc (int elem, void *base, int *cur, int cnt) |
549 | array_realloc (int elem, void *base, int *cur, int cnt) |
424 | { |
550 | { |
425 | *cur = array_nextsize (elem, *cur, cnt); |
551 | *cur = array_nextsize (elem, *cur, cnt); |
426 | return ev_realloc (base, elem * *cur); |
552 | return ev_realloc (base, elem * *cur); |
427 | } |
553 | } |
… | |
… | |
452 | |
578 | |
453 | void noinline |
579 | void noinline |
454 | ev_feed_event (EV_P_ void *w, int revents) |
580 | ev_feed_event (EV_P_ void *w, int revents) |
455 | { |
581 | { |
456 | W w_ = (W)w; |
582 | W w_ = (W)w; |
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583 | int pri = ABSPRI (w_); |
457 | |
584 | |
458 | if (expect_false (w_->pending)) |
585 | if (expect_false (w_->pending)) |
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586 | pendings [pri][w_->pending - 1].events |= revents; |
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587 | else |
459 | { |
588 | { |
|
|
589 | w_->pending = ++pendingcnt [pri]; |
|
|
590 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
591 | pendings [pri][w_->pending - 1].w = w_; |
460 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
592 | pendings [pri][w_->pending - 1].events = revents; |
461 | return; |
|
|
462 | } |
593 | } |
463 | |
|
|
464 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
465 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
466 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
467 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
468 | } |
594 | } |
469 | |
595 | |
470 | void inline_size |
596 | void inline_speed |
471 | queue_events (EV_P_ W *events, int eventcnt, int type) |
597 | queue_events (EV_P_ W *events, int eventcnt, int type) |
472 | { |
598 | { |
473 | int i; |
599 | int i; |
474 | |
600 | |
475 | for (i = 0; i < eventcnt; ++i) |
601 | for (i = 0; i < eventcnt; ++i) |
… | |
… | |
507 | } |
633 | } |
508 | |
634 | |
509 | void |
635 | void |
510 | ev_feed_fd_event (EV_P_ int fd, int revents) |
636 | ev_feed_fd_event (EV_P_ int fd, int revents) |
511 | { |
637 | { |
|
|
638 | if (fd >= 0 && fd < anfdmax) |
512 | fd_event (EV_A_ fd, revents); |
639 | fd_event (EV_A_ fd, revents); |
513 | } |
640 | } |
514 | |
641 | |
515 | void inline_size |
642 | void inline_size |
516 | fd_reify (EV_P) |
643 | fd_reify (EV_P) |
517 | { |
644 | { |
… | |
… | |
521 | { |
648 | { |
522 | int fd = fdchanges [i]; |
649 | int fd = fdchanges [i]; |
523 | ANFD *anfd = anfds + fd; |
650 | ANFD *anfd = anfds + fd; |
524 | ev_io *w; |
651 | ev_io *w; |
525 | |
652 | |
526 | int events = 0; |
653 | unsigned char events = 0; |
527 | |
654 | |
528 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
655 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
529 | events |= w->events; |
656 | events |= (unsigned char)w->events; |
530 | |
657 | |
531 | #if EV_SELECT_IS_WINSOCKET |
658 | #if EV_SELECT_IS_WINSOCKET |
532 | if (events) |
659 | if (events) |
533 | { |
660 | { |
534 | unsigned long argp; |
661 | unsigned long argp; |
|
|
662 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
663 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
664 | #else |
535 | anfd->handle = _get_osfhandle (fd); |
665 | anfd->handle = _get_osfhandle (fd); |
|
|
666 | #endif |
536 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
667 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
537 | } |
668 | } |
538 | #endif |
669 | #endif |
539 | |
670 | |
|
|
671 | { |
|
|
672 | unsigned char o_events = anfd->events; |
|
|
673 | unsigned char o_reify = anfd->reify; |
|
|
674 | |
540 | anfd->reify = 0; |
675 | anfd->reify = 0; |
541 | |
|
|
542 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
543 | anfd->events = events; |
676 | anfd->events = events; |
|
|
677 | |
|
|
678 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
679 | backend_modify (EV_A_ fd, o_events, events); |
|
|
680 | } |
544 | } |
681 | } |
545 | |
682 | |
546 | fdchangecnt = 0; |
683 | fdchangecnt = 0; |
547 | } |
684 | } |
548 | |
685 | |
549 | void inline_size |
686 | void inline_size |
550 | fd_change (EV_P_ int fd) |
687 | fd_change (EV_P_ int fd, int flags) |
551 | { |
688 | { |
552 | if (expect_false (anfds [fd].reify)) |
689 | unsigned char reify = anfds [fd].reify; |
553 | return; |
|
|
554 | |
|
|
555 | anfds [fd].reify = 1; |
690 | anfds [fd].reify |= flags; |
556 | |
691 | |
|
|
692 | if (expect_true (!reify)) |
|
|
693 | { |
557 | ++fdchangecnt; |
694 | ++fdchangecnt; |
558 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
695 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
559 | fdchanges [fdchangecnt - 1] = fd; |
696 | fdchanges [fdchangecnt - 1] = fd; |
|
|
697 | } |
560 | } |
698 | } |
561 | |
699 | |
562 | void inline_speed |
700 | void inline_speed |
563 | fd_kill (EV_P_ int fd) |
701 | fd_kill (EV_P_ int fd) |
564 | { |
702 | { |
… | |
… | |
615 | |
753 | |
616 | for (fd = 0; fd < anfdmax; ++fd) |
754 | for (fd = 0; fd < anfdmax; ++fd) |
617 | if (anfds [fd].events) |
755 | if (anfds [fd].events) |
618 | { |
756 | { |
619 | anfds [fd].events = 0; |
757 | anfds [fd].events = 0; |
620 | fd_change (EV_A_ fd); |
758 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
621 | } |
759 | } |
622 | } |
760 | } |
623 | |
761 | |
624 | /*****************************************************************************/ |
762 | /*****************************************************************************/ |
625 | |
763 | |
|
|
764 | /* |
|
|
765 | * at the moment we allow libev the luxury of two heaps, |
|
|
766 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
767 | * which is more cache-efficient. |
|
|
768 | * the difference is about 5% with 50000+ watchers. |
|
|
769 | */ |
|
|
770 | #define USE_4HEAP !EV_MINIMAL |
|
|
771 | #if USE_4HEAP |
|
|
772 | |
|
|
773 | #define HEAP0 3 /* index of first element in heap */ |
|
|
774 | |
|
|
775 | /* towards the root */ |
626 | void inline_speed |
776 | void inline_speed |
627 | upheap (WT *heap, int k) |
777 | upheap (WT *heap, int k) |
628 | { |
778 | { |
629 | WT w = heap [k]; |
779 | WT w = heap [k]; |
630 | |
780 | |
631 | while (k && heap [k >> 1]->at > w->at) |
781 | for (;;) |
632 | { |
782 | { |
|
|
783 | int p = ((k - HEAP0 - 1) / 4) + HEAP0; |
|
|
784 | |
|
|
785 | if (p >= HEAP0 || heap [p]->at <= w->at) |
|
|
786 | break; |
|
|
787 | |
633 | heap [k] = heap [k >> 1]; |
788 | heap [k] = heap [p]; |
634 | ((W)heap [k])->active = k + 1; |
789 | ev_active (heap [k]) = k; |
635 | k >>= 1; |
790 | k = p; |
636 | } |
791 | } |
637 | |
792 | |
638 | heap [k] = w; |
793 | heap [k] = w; |
639 | ((W)heap [k])->active = k + 1; |
794 | ev_active (heap [k]) = k; |
640 | |
|
|
641 | } |
795 | } |
642 | |
796 | |
|
|
797 | /* away from the root */ |
643 | void inline_speed |
798 | void inline_speed |
644 | downheap (WT *heap, int N, int k) |
799 | downheap (WT *heap, int N, int k) |
645 | { |
800 | { |
646 | WT w = heap [k]; |
801 | WT w = heap [k]; |
|
|
802 | WT *E = heap + N + HEAP0; |
647 | |
803 | |
648 | while (k < (N >> 1)) |
804 | for (;;) |
649 | { |
805 | { |
650 | int j = k << 1; |
806 | ev_tstamp minat; |
|
|
807 | WT *minpos; |
|
|
808 | WT *pos = heap + 4 * (k - HEAP0) + HEAP0; |
651 | |
809 | |
652 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
810 | // find minimum child |
|
|
811 | if (expect_true (pos +3 < E)) |
653 | ++j; |
812 | { |
|
|
813 | /* fast path */ |
|
|
814 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
815 | if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
816 | if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
817 | if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
818 | } |
|
|
819 | else |
|
|
820 | { |
|
|
821 | /* slow path */ |
|
|
822 | if (pos >= E) |
|
|
823 | break; |
|
|
824 | (minpos = pos + 0), (minat = (*minpos)->at); |
|
|
825 | if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); |
|
|
826 | if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); |
|
|
827 | if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); |
|
|
828 | } |
654 | |
829 | |
655 | if (w->at <= heap [j]->at) |
830 | if (w->at <= minat) |
656 | break; |
831 | break; |
657 | |
832 | |
658 | heap [k] = heap [j]; |
833 | ev_active (*minpos) = k; |
659 | ((W)heap [k])->active = k + 1; |
834 | heap [k] = *minpos; |
660 | k = j; |
835 | |
|
|
836 | k = minpos - heap; |
661 | } |
837 | } |
662 | |
838 | |
663 | heap [k] = w; |
839 | heap [k] = w; |
|
|
840 | ev_active (heap [k]) = k; |
|
|
841 | } |
|
|
842 | |
|
|
843 | #else // 4HEAP |
|
|
844 | |
|
|
845 | #define HEAP0 1 |
|
|
846 | |
|
|
847 | /* towards the root */ |
|
|
848 | void inline_speed |
|
|
849 | upheap (WT *heap, int k) |
|
|
850 | { |
|
|
851 | WT w = heap [k]; |
|
|
852 | |
|
|
853 | for (;;) |
|
|
854 | { |
|
|
855 | int p = k >> 1; |
|
|
856 | |
|
|
857 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
858 | if (!p || heap [p]->at <= w->at) |
|
|
859 | break; |
|
|
860 | |
|
|
861 | heap [k] = heap [p]; |
|
|
862 | ev_active (heap [k]) = k; |
|
|
863 | k = p; |
|
|
864 | } |
|
|
865 | |
|
|
866 | heap [k] = w; |
|
|
867 | ev_active (heap [k]) = k; |
|
|
868 | } |
|
|
869 | |
|
|
870 | /* away from the root */ |
|
|
871 | void inline_speed |
|
|
872 | downheap (WT *heap, int N, int k) |
|
|
873 | { |
|
|
874 | WT w = heap [k]; |
|
|
875 | |
|
|
876 | for (;;) |
|
|
877 | { |
|
|
878 | int c = k << 1; |
|
|
879 | |
|
|
880 | if (c > N) |
|
|
881 | break; |
|
|
882 | |
|
|
883 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
884 | ? 1 : 0; |
|
|
885 | |
|
|
886 | if (w->at <= heap [c]->at) |
|
|
887 | break; |
|
|
888 | |
|
|
889 | heap [k] = heap [c]; |
664 | ((W)heap [k])->active = k + 1; |
890 | ((W)heap [k])->active = k; |
|
|
891 | |
|
|
892 | k = c; |
|
|
893 | } |
|
|
894 | |
|
|
895 | heap [k] = w; |
|
|
896 | ev_active (heap [k]) = k; |
665 | } |
897 | } |
|
|
898 | #endif |
666 | |
899 | |
667 | void inline_size |
900 | void inline_size |
668 | adjustheap (WT *heap, int N, int k) |
901 | adjustheap (WT *heap, int N, int k) |
669 | { |
902 | { |
670 | upheap (heap, k); |
903 | upheap (heap, k); |
… | |
… | |
674 | /*****************************************************************************/ |
907 | /*****************************************************************************/ |
675 | |
908 | |
676 | typedef struct |
909 | typedef struct |
677 | { |
910 | { |
678 | WL head; |
911 | WL head; |
679 | sig_atomic_t volatile gotsig; |
912 | EV_ATOMIC_T gotsig; |
680 | } ANSIG; |
913 | } ANSIG; |
681 | |
914 | |
682 | static ANSIG *signals; |
915 | static ANSIG *signals; |
683 | static int signalmax; |
916 | static int signalmax; |
684 | |
917 | |
685 | static int sigpipe [2]; |
918 | static EV_ATOMIC_T gotsig; |
686 | static sig_atomic_t volatile gotsig; |
|
|
687 | static ev_io sigev; |
|
|
688 | |
919 | |
689 | void inline_size |
920 | void inline_size |
690 | signals_init (ANSIG *base, int count) |
921 | signals_init (ANSIG *base, int count) |
691 | { |
922 | { |
692 | while (count--) |
923 | while (count--) |
… | |
… | |
696 | |
927 | |
697 | ++base; |
928 | ++base; |
698 | } |
929 | } |
699 | } |
930 | } |
700 | |
931 | |
701 | static void |
932 | /*****************************************************************************/ |
702 | sighandler (int signum) |
|
|
703 | { |
|
|
704 | #if _WIN32 |
|
|
705 | signal (signum, sighandler); |
|
|
706 | #endif |
|
|
707 | |
933 | |
708 | signals [signum - 1].gotsig = 1; |
|
|
709 | |
|
|
710 | if (!gotsig) |
|
|
711 | { |
|
|
712 | int old_errno = errno; |
|
|
713 | gotsig = 1; |
|
|
714 | write (sigpipe [1], &signum, 1); |
|
|
715 | errno = old_errno; |
|
|
716 | } |
|
|
717 | } |
|
|
718 | |
|
|
719 | void noinline |
|
|
720 | ev_feed_signal_event (EV_P_ int signum) |
|
|
721 | { |
|
|
722 | WL w; |
|
|
723 | |
|
|
724 | #if EV_MULTIPLICITY |
|
|
725 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
726 | #endif |
|
|
727 | |
|
|
728 | --signum; |
|
|
729 | |
|
|
730 | if (signum < 0 || signum >= signalmax) |
|
|
731 | return; |
|
|
732 | |
|
|
733 | signals [signum].gotsig = 0; |
|
|
734 | |
|
|
735 | for (w = signals [signum].head; w; w = w->next) |
|
|
736 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
737 | } |
|
|
738 | |
|
|
739 | static void |
|
|
740 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
741 | { |
|
|
742 | int signum; |
|
|
743 | |
|
|
744 | read (sigpipe [0], &revents, 1); |
|
|
745 | gotsig = 0; |
|
|
746 | |
|
|
747 | for (signum = signalmax; signum--; ) |
|
|
748 | if (signals [signum].gotsig) |
|
|
749 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
750 | } |
|
|
751 | |
|
|
752 | void inline_size |
934 | void inline_speed |
753 | fd_intern (int fd) |
935 | fd_intern (int fd) |
754 | { |
936 | { |
755 | #ifdef _WIN32 |
937 | #ifdef _WIN32 |
756 | int arg = 1; |
938 | int arg = 1; |
757 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
939 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
… | |
… | |
760 | fcntl (fd, F_SETFL, O_NONBLOCK); |
942 | fcntl (fd, F_SETFL, O_NONBLOCK); |
761 | #endif |
943 | #endif |
762 | } |
944 | } |
763 | |
945 | |
764 | static void noinline |
946 | static void noinline |
765 | siginit (EV_P) |
947 | evpipe_init (EV_P) |
766 | { |
948 | { |
|
|
949 | if (!ev_is_active (&pipeev)) |
|
|
950 | { |
|
|
951 | #if EV_USE_EVENTFD |
|
|
952 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
953 | { |
|
|
954 | evpipe [0] = -1; |
|
|
955 | fd_intern (evfd); |
|
|
956 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
957 | } |
|
|
958 | else |
|
|
959 | #endif |
|
|
960 | { |
|
|
961 | while (pipe (evpipe)) |
|
|
962 | syserr ("(libev) error creating signal/async pipe"); |
|
|
963 | |
767 | fd_intern (sigpipe [0]); |
964 | fd_intern (evpipe [0]); |
768 | fd_intern (sigpipe [1]); |
965 | fd_intern (evpipe [1]); |
|
|
966 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
967 | } |
769 | |
968 | |
770 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
771 | ev_io_start (EV_A_ &sigev); |
969 | ev_io_start (EV_A_ &pipeev); |
772 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
970 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
971 | } |
|
|
972 | } |
|
|
973 | |
|
|
974 | void inline_size |
|
|
975 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
976 | { |
|
|
977 | if (!*flag) |
|
|
978 | { |
|
|
979 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
980 | |
|
|
981 | *flag = 1; |
|
|
982 | |
|
|
983 | #if EV_USE_EVENTFD |
|
|
984 | if (evfd >= 0) |
|
|
985 | { |
|
|
986 | uint64_t counter = 1; |
|
|
987 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
988 | } |
|
|
989 | else |
|
|
990 | #endif |
|
|
991 | write (evpipe [1], &old_errno, 1); |
|
|
992 | |
|
|
993 | errno = old_errno; |
|
|
994 | } |
|
|
995 | } |
|
|
996 | |
|
|
997 | static void |
|
|
998 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
999 | { |
|
|
1000 | #if EV_USE_EVENTFD |
|
|
1001 | if (evfd >= 0) |
|
|
1002 | { |
|
|
1003 | uint64_t counter; |
|
|
1004 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1005 | } |
|
|
1006 | else |
|
|
1007 | #endif |
|
|
1008 | { |
|
|
1009 | char dummy; |
|
|
1010 | read (evpipe [0], &dummy, 1); |
|
|
1011 | } |
|
|
1012 | |
|
|
1013 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1014 | { |
|
|
1015 | int signum; |
|
|
1016 | gotsig = 0; |
|
|
1017 | |
|
|
1018 | for (signum = signalmax; signum--; ) |
|
|
1019 | if (signals [signum].gotsig) |
|
|
1020 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1021 | } |
|
|
1022 | |
|
|
1023 | #if EV_ASYNC_ENABLE |
|
|
1024 | if (gotasync) |
|
|
1025 | { |
|
|
1026 | int i; |
|
|
1027 | gotasync = 0; |
|
|
1028 | |
|
|
1029 | for (i = asynccnt; i--; ) |
|
|
1030 | if (asyncs [i]->sent) |
|
|
1031 | { |
|
|
1032 | asyncs [i]->sent = 0; |
|
|
1033 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1034 | } |
|
|
1035 | } |
|
|
1036 | #endif |
773 | } |
1037 | } |
774 | |
1038 | |
775 | /*****************************************************************************/ |
1039 | /*****************************************************************************/ |
776 | |
1040 | |
|
|
1041 | static void |
|
|
1042 | ev_sighandler (int signum) |
|
|
1043 | { |
|
|
1044 | #if EV_MULTIPLICITY |
|
|
1045 | struct ev_loop *loop = &default_loop_struct; |
|
|
1046 | #endif |
|
|
1047 | |
|
|
1048 | #if _WIN32 |
|
|
1049 | signal (signum, ev_sighandler); |
|
|
1050 | #endif |
|
|
1051 | |
|
|
1052 | signals [signum - 1].gotsig = 1; |
|
|
1053 | evpipe_write (EV_A_ &gotsig); |
|
|
1054 | } |
|
|
1055 | |
|
|
1056 | void noinline |
|
|
1057 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1058 | { |
|
|
1059 | WL w; |
|
|
1060 | |
|
|
1061 | #if EV_MULTIPLICITY |
|
|
1062 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1063 | #endif |
|
|
1064 | |
|
|
1065 | --signum; |
|
|
1066 | |
|
|
1067 | if (signum < 0 || signum >= signalmax) |
|
|
1068 | return; |
|
|
1069 | |
|
|
1070 | signals [signum].gotsig = 0; |
|
|
1071 | |
|
|
1072 | for (w = signals [signum].head; w; w = w->next) |
|
|
1073 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | /*****************************************************************************/ |
|
|
1077 | |
777 | static ev_child *childs [EV_PID_HASHSIZE]; |
1078 | static WL childs [EV_PID_HASHSIZE]; |
778 | |
1079 | |
779 | #ifndef _WIN32 |
1080 | #ifndef _WIN32 |
780 | |
1081 | |
781 | static ev_signal childev; |
1082 | static ev_signal childev; |
782 | |
1083 | |
|
|
1084 | #ifndef WIFCONTINUED |
|
|
1085 | # define WIFCONTINUED(status) 0 |
|
|
1086 | #endif |
|
|
1087 | |
783 | void inline_speed |
1088 | void inline_speed |
784 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
1089 | child_reap (EV_P_ int chain, int pid, int status) |
785 | { |
1090 | { |
786 | ev_child *w; |
1091 | ev_child *w; |
|
|
1092 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
787 | |
1093 | |
788 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1094 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1095 | { |
789 | if (w->pid == pid || !w->pid) |
1096 | if ((w->pid == pid || !w->pid) |
|
|
1097 | && (!traced || (w->flags & 1))) |
790 | { |
1098 | { |
791 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
1099 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
792 | w->rpid = pid; |
1100 | w->rpid = pid; |
793 | w->rstatus = status; |
1101 | w->rstatus = status; |
794 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
1102 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
795 | } |
1103 | } |
|
|
1104 | } |
796 | } |
1105 | } |
797 | |
1106 | |
798 | #ifndef WCONTINUED |
1107 | #ifndef WCONTINUED |
799 | # define WCONTINUED 0 |
1108 | # define WCONTINUED 0 |
800 | #endif |
1109 | #endif |
… | |
… | |
809 | if (!WCONTINUED |
1118 | if (!WCONTINUED |
810 | || errno != EINVAL |
1119 | || errno != EINVAL |
811 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1120 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
812 | return; |
1121 | return; |
813 | |
1122 | |
814 | /* make sure we are called again until all childs have been reaped */ |
1123 | /* make sure we are called again until all children have been reaped */ |
815 | /* we need to do it this way so that the callback gets called before we continue */ |
1124 | /* we need to do it this way so that the callback gets called before we continue */ |
816 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1125 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
817 | |
1126 | |
818 | child_reap (EV_A_ sw, pid, pid, status); |
1127 | child_reap (EV_A_ pid, pid, status); |
819 | if (EV_PID_HASHSIZE > 1) |
1128 | if (EV_PID_HASHSIZE > 1) |
820 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1129 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
821 | } |
1130 | } |
822 | |
1131 | |
823 | #endif |
1132 | #endif |
824 | |
1133 | |
825 | /*****************************************************************************/ |
1134 | /*****************************************************************************/ |
… | |
… | |
897 | } |
1206 | } |
898 | |
1207 | |
899 | unsigned int |
1208 | unsigned int |
900 | ev_embeddable_backends (void) |
1209 | ev_embeddable_backends (void) |
901 | { |
1210 | { |
902 | return EVBACKEND_EPOLL |
1211 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
903 | | EVBACKEND_KQUEUE |
1212 | |
904 | | EVBACKEND_PORT; |
1213 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1214 | /* please fix it and tell me how to detect the fix */ |
|
|
1215 | flags &= ~EVBACKEND_EPOLL; |
|
|
1216 | |
|
|
1217 | return flags; |
905 | } |
1218 | } |
906 | |
1219 | |
907 | unsigned int |
1220 | unsigned int |
908 | ev_backend (EV_P) |
1221 | ev_backend (EV_P) |
909 | { |
1222 | { |
… | |
… | |
912 | |
1225 | |
913 | unsigned int |
1226 | unsigned int |
914 | ev_loop_count (EV_P) |
1227 | ev_loop_count (EV_P) |
915 | { |
1228 | { |
916 | return loop_count; |
1229 | return loop_count; |
|
|
1230 | } |
|
|
1231 | |
|
|
1232 | void |
|
|
1233 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1234 | { |
|
|
1235 | io_blocktime = interval; |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | void |
|
|
1239 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1240 | { |
|
|
1241 | timeout_blocktime = interval; |
917 | } |
1242 | } |
918 | |
1243 | |
919 | static void noinline |
1244 | static void noinline |
920 | loop_init (EV_P_ unsigned int flags) |
1245 | loop_init (EV_P_ unsigned int flags) |
921 | { |
1246 | { |
… | |
… | |
927 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1252 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
928 | have_monotonic = 1; |
1253 | have_monotonic = 1; |
929 | } |
1254 | } |
930 | #endif |
1255 | #endif |
931 | |
1256 | |
932 | ev_rt_now = ev_time (); |
1257 | ev_rt_now = ev_time (); |
933 | mn_now = get_clock (); |
1258 | mn_now = get_clock (); |
934 | now_floor = mn_now; |
1259 | now_floor = mn_now; |
935 | rtmn_diff = ev_rt_now - mn_now; |
1260 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1261 | |
|
|
1262 | io_blocktime = 0.; |
|
|
1263 | timeout_blocktime = 0.; |
|
|
1264 | backend = 0; |
|
|
1265 | backend_fd = -1; |
|
|
1266 | gotasync = 0; |
|
|
1267 | #if EV_USE_INOTIFY |
|
|
1268 | fs_fd = -2; |
|
|
1269 | #endif |
936 | |
1270 | |
937 | /* pid check not overridable via env */ |
1271 | /* pid check not overridable via env */ |
938 | #ifndef _WIN32 |
1272 | #ifndef _WIN32 |
939 | if (flags & EVFLAG_FORKCHECK) |
1273 | if (flags & EVFLAG_FORKCHECK) |
940 | curpid = getpid (); |
1274 | curpid = getpid (); |
… | |
… | |
943 | if (!(flags & EVFLAG_NOENV) |
1277 | if (!(flags & EVFLAG_NOENV) |
944 | && !enable_secure () |
1278 | && !enable_secure () |
945 | && getenv ("LIBEV_FLAGS")) |
1279 | && getenv ("LIBEV_FLAGS")) |
946 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1280 | flags = atoi (getenv ("LIBEV_FLAGS")); |
947 | |
1281 | |
948 | if (!(flags & 0x0000ffffUL)) |
1282 | if (!(flags & 0x0000ffffU)) |
949 | flags |= ev_recommended_backends (); |
1283 | flags |= ev_recommended_backends (); |
950 | |
|
|
951 | backend = 0; |
|
|
952 | backend_fd = -1; |
|
|
953 | #if EV_USE_INOTIFY |
|
|
954 | fs_fd = -2; |
|
|
955 | #endif |
|
|
956 | |
1284 | |
957 | #if EV_USE_PORT |
1285 | #if EV_USE_PORT |
958 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1286 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
959 | #endif |
1287 | #endif |
960 | #if EV_USE_KQUEUE |
1288 | #if EV_USE_KQUEUE |
… | |
… | |
968 | #endif |
1296 | #endif |
969 | #if EV_USE_SELECT |
1297 | #if EV_USE_SELECT |
970 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1298 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
971 | #endif |
1299 | #endif |
972 | |
1300 | |
973 | ev_init (&sigev, sigcb); |
1301 | ev_init (&pipeev, pipecb); |
974 | ev_set_priority (&sigev, EV_MAXPRI); |
1302 | ev_set_priority (&pipeev, EV_MAXPRI); |
975 | } |
1303 | } |
976 | } |
1304 | } |
977 | |
1305 | |
978 | static void noinline |
1306 | static void noinline |
979 | loop_destroy (EV_P) |
1307 | loop_destroy (EV_P) |
980 | { |
1308 | { |
981 | int i; |
1309 | int i; |
|
|
1310 | |
|
|
1311 | if (ev_is_active (&pipeev)) |
|
|
1312 | { |
|
|
1313 | ev_ref (EV_A); /* signal watcher */ |
|
|
1314 | ev_io_stop (EV_A_ &pipeev); |
|
|
1315 | |
|
|
1316 | #if EV_USE_EVENTFD |
|
|
1317 | if (evfd >= 0) |
|
|
1318 | close (evfd); |
|
|
1319 | #endif |
|
|
1320 | |
|
|
1321 | if (evpipe [0] >= 0) |
|
|
1322 | { |
|
|
1323 | close (evpipe [0]); |
|
|
1324 | close (evpipe [1]); |
|
|
1325 | } |
|
|
1326 | } |
982 | |
1327 | |
983 | #if EV_USE_INOTIFY |
1328 | #if EV_USE_INOTIFY |
984 | if (fs_fd >= 0) |
1329 | if (fs_fd >= 0) |
985 | close (fs_fd); |
1330 | close (fs_fd); |
986 | #endif |
1331 | #endif |
… | |
… | |
1009 | array_free (pending, [i]); |
1354 | array_free (pending, [i]); |
1010 | #if EV_IDLE_ENABLE |
1355 | #if EV_IDLE_ENABLE |
1011 | array_free (idle, [i]); |
1356 | array_free (idle, [i]); |
1012 | #endif |
1357 | #endif |
1013 | } |
1358 | } |
|
|
1359 | |
|
|
1360 | ev_free (anfds); anfdmax = 0; |
1014 | |
1361 | |
1015 | /* have to use the microsoft-never-gets-it-right macro */ |
1362 | /* have to use the microsoft-never-gets-it-right macro */ |
1016 | array_free (fdchange, EMPTY); |
1363 | array_free (fdchange, EMPTY); |
1017 | array_free (timer, EMPTY); |
1364 | array_free (timer, EMPTY); |
1018 | #if EV_PERIODIC_ENABLE |
1365 | #if EV_PERIODIC_ENABLE |
1019 | array_free (periodic, EMPTY); |
1366 | array_free (periodic, EMPTY); |
1020 | #endif |
1367 | #endif |
|
|
1368 | #if EV_FORK_ENABLE |
|
|
1369 | array_free (fork, EMPTY); |
|
|
1370 | #endif |
1021 | array_free (prepare, EMPTY); |
1371 | array_free (prepare, EMPTY); |
1022 | array_free (check, EMPTY); |
1372 | array_free (check, EMPTY); |
|
|
1373 | #if EV_ASYNC_ENABLE |
|
|
1374 | array_free (async, EMPTY); |
|
|
1375 | #endif |
1023 | |
1376 | |
1024 | backend = 0; |
1377 | backend = 0; |
1025 | } |
1378 | } |
1026 | |
1379 | |
|
|
1380 | #if EV_USE_INOTIFY |
1027 | void inline_size infy_fork (EV_P); |
1381 | void inline_size infy_fork (EV_P); |
|
|
1382 | #endif |
1028 | |
1383 | |
1029 | void inline_size |
1384 | void inline_size |
1030 | loop_fork (EV_P) |
1385 | loop_fork (EV_P) |
1031 | { |
1386 | { |
1032 | #if EV_USE_PORT |
1387 | #if EV_USE_PORT |
… | |
… | |
1040 | #endif |
1395 | #endif |
1041 | #if EV_USE_INOTIFY |
1396 | #if EV_USE_INOTIFY |
1042 | infy_fork (EV_A); |
1397 | infy_fork (EV_A); |
1043 | #endif |
1398 | #endif |
1044 | |
1399 | |
1045 | if (ev_is_active (&sigev)) |
1400 | if (ev_is_active (&pipeev)) |
1046 | { |
1401 | { |
1047 | /* default loop */ |
1402 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1403 | /* while we modify the fd vars */ |
|
|
1404 | gotsig = 1; |
|
|
1405 | #if EV_ASYNC_ENABLE |
|
|
1406 | gotasync = 1; |
|
|
1407 | #endif |
1048 | |
1408 | |
1049 | ev_ref (EV_A); |
1409 | ev_ref (EV_A); |
1050 | ev_io_stop (EV_A_ &sigev); |
1410 | ev_io_stop (EV_A_ &pipeev); |
|
|
1411 | |
|
|
1412 | #if EV_USE_EVENTFD |
|
|
1413 | if (evfd >= 0) |
|
|
1414 | close (evfd); |
|
|
1415 | #endif |
|
|
1416 | |
|
|
1417 | if (evpipe [0] >= 0) |
|
|
1418 | { |
1051 | close (sigpipe [0]); |
1419 | close (evpipe [0]); |
1052 | close (sigpipe [1]); |
1420 | close (evpipe [1]); |
|
|
1421 | } |
1053 | |
1422 | |
1054 | while (pipe (sigpipe)) |
|
|
1055 | syserr ("(libev) error creating pipe"); |
|
|
1056 | |
|
|
1057 | siginit (EV_A); |
1423 | evpipe_init (EV_A); |
|
|
1424 | /* now iterate over everything, in case we missed something */ |
|
|
1425 | pipecb (EV_A_ &pipeev, EV_READ); |
1058 | } |
1426 | } |
1059 | |
1427 | |
1060 | postfork = 0; |
1428 | postfork = 0; |
1061 | } |
1429 | } |
1062 | |
1430 | |
… | |
… | |
1084 | } |
1452 | } |
1085 | |
1453 | |
1086 | void |
1454 | void |
1087 | ev_loop_fork (EV_P) |
1455 | ev_loop_fork (EV_P) |
1088 | { |
1456 | { |
1089 | postfork = 1; |
1457 | postfork = 1; /* must be in line with ev_default_fork */ |
1090 | } |
1458 | } |
1091 | |
|
|
1092 | #endif |
1459 | #endif |
1093 | |
1460 | |
1094 | #if EV_MULTIPLICITY |
1461 | #if EV_MULTIPLICITY |
1095 | struct ev_loop * |
1462 | struct ev_loop * |
1096 | ev_default_loop_init (unsigned int flags) |
1463 | ev_default_loop_init (unsigned int flags) |
1097 | #else |
1464 | #else |
1098 | int |
1465 | int |
1099 | ev_default_loop (unsigned int flags) |
1466 | ev_default_loop (unsigned int flags) |
1100 | #endif |
1467 | #endif |
1101 | { |
1468 | { |
1102 | if (sigpipe [0] == sigpipe [1]) |
|
|
1103 | if (pipe (sigpipe)) |
|
|
1104 | return 0; |
|
|
1105 | |
|
|
1106 | if (!ev_default_loop_ptr) |
1469 | if (!ev_default_loop_ptr) |
1107 | { |
1470 | { |
1108 | #if EV_MULTIPLICITY |
1471 | #if EV_MULTIPLICITY |
1109 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1472 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1110 | #else |
1473 | #else |
… | |
… | |
1113 | |
1476 | |
1114 | loop_init (EV_A_ flags); |
1477 | loop_init (EV_A_ flags); |
1115 | |
1478 | |
1116 | if (ev_backend (EV_A)) |
1479 | if (ev_backend (EV_A)) |
1117 | { |
1480 | { |
1118 | siginit (EV_A); |
|
|
1119 | |
|
|
1120 | #ifndef _WIN32 |
1481 | #ifndef _WIN32 |
1121 | ev_signal_init (&childev, childcb, SIGCHLD); |
1482 | ev_signal_init (&childev, childcb, SIGCHLD); |
1122 | ev_set_priority (&childev, EV_MAXPRI); |
1483 | ev_set_priority (&childev, EV_MAXPRI); |
1123 | ev_signal_start (EV_A_ &childev); |
1484 | ev_signal_start (EV_A_ &childev); |
1124 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1485 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1141 | #ifndef _WIN32 |
1502 | #ifndef _WIN32 |
1142 | ev_ref (EV_A); /* child watcher */ |
1503 | ev_ref (EV_A); /* child watcher */ |
1143 | ev_signal_stop (EV_A_ &childev); |
1504 | ev_signal_stop (EV_A_ &childev); |
1144 | #endif |
1505 | #endif |
1145 | |
1506 | |
1146 | ev_ref (EV_A); /* signal watcher */ |
|
|
1147 | ev_io_stop (EV_A_ &sigev); |
|
|
1148 | |
|
|
1149 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1150 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1151 | |
|
|
1152 | loop_destroy (EV_A); |
1507 | loop_destroy (EV_A); |
1153 | } |
1508 | } |
1154 | |
1509 | |
1155 | void |
1510 | void |
1156 | ev_default_fork (void) |
1511 | ev_default_fork (void) |
… | |
… | |
1158 | #if EV_MULTIPLICITY |
1513 | #if EV_MULTIPLICITY |
1159 | struct ev_loop *loop = ev_default_loop_ptr; |
1514 | struct ev_loop *loop = ev_default_loop_ptr; |
1160 | #endif |
1515 | #endif |
1161 | |
1516 | |
1162 | if (backend) |
1517 | if (backend) |
1163 | postfork = 1; |
1518 | postfork = 1; /* must be in line with ev_loop_fork */ |
1164 | } |
1519 | } |
1165 | |
1520 | |
1166 | /*****************************************************************************/ |
1521 | /*****************************************************************************/ |
|
|
1522 | |
|
|
1523 | void |
|
|
1524 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1525 | { |
|
|
1526 | EV_CB_INVOKE ((W)w, revents); |
|
|
1527 | } |
1167 | |
1528 | |
1168 | void inline_speed |
1529 | void inline_speed |
1169 | call_pending (EV_P) |
1530 | call_pending (EV_P) |
1170 | { |
1531 | { |
1171 | int pri; |
1532 | int pri; |
… | |
… | |
1182 | p->w->pending = 0; |
1543 | p->w->pending = 0; |
1183 | EV_CB_INVOKE (p->w, p->events); |
1544 | EV_CB_INVOKE (p->w, p->events); |
1184 | } |
1545 | } |
1185 | } |
1546 | } |
1186 | } |
1547 | } |
1187 | |
|
|
1188 | void inline_size |
|
|
1189 | timers_reify (EV_P) |
|
|
1190 | { |
|
|
1191 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
|
|
1192 | { |
|
|
1193 | ev_timer *w = timers [0]; |
|
|
1194 | |
|
|
1195 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1196 | |
|
|
1197 | /* first reschedule or stop timer */ |
|
|
1198 | if (w->repeat) |
|
|
1199 | { |
|
|
1200 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1201 | |
|
|
1202 | ((WT)w)->at += w->repeat; |
|
|
1203 | if (((WT)w)->at < mn_now) |
|
|
1204 | ((WT)w)->at = mn_now; |
|
|
1205 | |
|
|
1206 | downheap ((WT *)timers, timercnt, 0); |
|
|
1207 | } |
|
|
1208 | else |
|
|
1209 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1210 | |
|
|
1211 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1212 | } |
|
|
1213 | } |
|
|
1214 | |
|
|
1215 | #if EV_PERIODIC_ENABLE |
|
|
1216 | void inline_size |
|
|
1217 | periodics_reify (EV_P) |
|
|
1218 | { |
|
|
1219 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1220 | { |
|
|
1221 | ev_periodic *w = periodics [0]; |
|
|
1222 | |
|
|
1223 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1224 | |
|
|
1225 | /* first reschedule or stop timer */ |
|
|
1226 | if (w->reschedule_cb) |
|
|
1227 | { |
|
|
1228 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1229 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1230 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1231 | } |
|
|
1232 | else if (w->interval) |
|
|
1233 | { |
|
|
1234 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1235 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1236 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1237 | } |
|
|
1238 | else |
|
|
1239 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1240 | |
|
|
1241 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1242 | } |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | static void noinline |
|
|
1246 | periodics_reschedule (EV_P) |
|
|
1247 | { |
|
|
1248 | int i; |
|
|
1249 | |
|
|
1250 | /* adjust periodics after time jump */ |
|
|
1251 | for (i = 0; i < periodiccnt; ++i) |
|
|
1252 | { |
|
|
1253 | ev_periodic *w = periodics [i]; |
|
|
1254 | |
|
|
1255 | if (w->reschedule_cb) |
|
|
1256 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1257 | else if (w->interval) |
|
|
1258 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | /* now rebuild the heap */ |
|
|
1262 | for (i = periodiccnt >> 1; i--; ) |
|
|
1263 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1264 | } |
|
|
1265 | #endif |
|
|
1266 | |
1548 | |
1267 | #if EV_IDLE_ENABLE |
1549 | #if EV_IDLE_ENABLE |
1268 | void inline_size |
1550 | void inline_size |
1269 | idle_reify (EV_P) |
1551 | idle_reify (EV_P) |
1270 | { |
1552 | { |
… | |
… | |
1285 | } |
1567 | } |
1286 | } |
1568 | } |
1287 | } |
1569 | } |
1288 | #endif |
1570 | #endif |
1289 | |
1571 | |
1290 | int inline_size |
1572 | void inline_size |
1291 | time_update_monotonic (EV_P) |
1573 | timers_reify (EV_P) |
1292 | { |
1574 | { |
|
|
1575 | while (timercnt && ev_at (timers [HEAP0]) <= mn_now) |
|
|
1576 | { |
|
|
1577 | ev_timer *w = (ev_timer *)timers [HEAP0]; |
|
|
1578 | |
|
|
1579 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1580 | |
|
|
1581 | /* first reschedule or stop timer */ |
|
|
1582 | if (w->repeat) |
|
|
1583 | { |
|
|
1584 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1585 | |
|
|
1586 | ev_at (w) += w->repeat; |
|
|
1587 | if (ev_at (w) < mn_now) |
|
|
1588 | ev_at (w) = mn_now; |
|
|
1589 | |
|
|
1590 | downheap (timers, timercnt, HEAP0); |
|
|
1591 | } |
|
|
1592 | else |
|
|
1593 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1594 | |
|
|
1595 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1596 | } |
|
|
1597 | } |
|
|
1598 | |
|
|
1599 | #if EV_PERIODIC_ENABLE |
|
|
1600 | void inline_size |
|
|
1601 | periodics_reify (EV_P) |
|
|
1602 | { |
|
|
1603 | while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) |
|
|
1604 | { |
|
|
1605 | ev_periodic *w = (ev_periodic *)periodics [HEAP0]; |
|
|
1606 | |
|
|
1607 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1608 | |
|
|
1609 | /* first reschedule or stop timer */ |
|
|
1610 | if (w->reschedule_cb) |
|
|
1611 | { |
|
|
1612 | ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1613 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
|
|
1614 | downheap (periodics, periodiccnt, 1); |
|
|
1615 | } |
|
|
1616 | else if (w->interval) |
|
|
1617 | { |
|
|
1618 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1619 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
|
|
1620 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
|
|
1621 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1622 | } |
|
|
1623 | else |
|
|
1624 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1625 | |
|
|
1626 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1627 | } |
|
|
1628 | } |
|
|
1629 | |
|
|
1630 | static void noinline |
|
|
1631 | periodics_reschedule (EV_P) |
|
|
1632 | { |
|
|
1633 | int i; |
|
|
1634 | |
|
|
1635 | /* adjust periodics after time jump */ |
|
|
1636 | for (i = 1; i <= periodiccnt; ++i) |
|
|
1637 | { |
|
|
1638 | ev_periodic *w = (ev_periodic *)periodics [i]; |
|
|
1639 | |
|
|
1640 | if (w->reschedule_cb) |
|
|
1641 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1642 | else if (w->interval) |
|
|
1643 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1644 | } |
|
|
1645 | |
|
|
1646 | /* now rebuild the heap */ |
|
|
1647 | for (i = periodiccnt >> 1; --i; ) |
|
|
1648 | downheap (periodics, periodiccnt, i + HEAP0); |
|
|
1649 | } |
|
|
1650 | #endif |
|
|
1651 | |
|
|
1652 | void inline_speed |
|
|
1653 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1654 | { |
|
|
1655 | int i; |
|
|
1656 | |
|
|
1657 | #if EV_USE_MONOTONIC |
|
|
1658 | if (expect_true (have_monotonic)) |
|
|
1659 | { |
|
|
1660 | ev_tstamp odiff = rtmn_diff; |
|
|
1661 | |
1293 | mn_now = get_clock (); |
1662 | mn_now = get_clock (); |
1294 | |
1663 | |
|
|
1664 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1665 | /* interpolate in the meantime */ |
1295 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1666 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1296 | { |
1667 | { |
1297 | ev_rt_now = rtmn_diff + mn_now; |
1668 | ev_rt_now = rtmn_diff + mn_now; |
1298 | return 0; |
1669 | return; |
1299 | } |
1670 | } |
1300 | else |
1671 | |
1301 | { |
|
|
1302 | now_floor = mn_now; |
1672 | now_floor = mn_now; |
1303 | ev_rt_now = ev_time (); |
1673 | ev_rt_now = ev_time (); |
1304 | return 1; |
|
|
1305 | } |
|
|
1306 | } |
|
|
1307 | |
1674 | |
1308 | void inline_size |
1675 | /* loop a few times, before making important decisions. |
1309 | time_update (EV_P) |
1676 | * on the choice of "4": one iteration isn't enough, |
1310 | { |
1677 | * in case we get preempted during the calls to |
1311 | int i; |
1678 | * ev_time and get_clock. a second call is almost guaranteed |
1312 | |
1679 | * to succeed in that case, though. and looping a few more times |
1313 | #if EV_USE_MONOTONIC |
1680 | * doesn't hurt either as we only do this on time-jumps or |
1314 | if (expect_true (have_monotonic)) |
1681 | * in the unlikely event of having been preempted here. |
1315 | { |
1682 | */ |
1316 | if (time_update_monotonic (EV_A)) |
1683 | for (i = 4; --i; ) |
1317 | { |
1684 | { |
1318 | ev_tstamp odiff = rtmn_diff; |
|
|
1319 | |
|
|
1320 | /* loop a few times, before making important decisions. |
|
|
1321 | * on the choice of "4": one iteration isn't enough, |
|
|
1322 | * in case we get preempted during the calls to |
|
|
1323 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1324 | * to succeed in that case, though. and looping a few more times |
|
|
1325 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1326 | * in the unlikely event of having been preempted here. |
|
|
1327 | */ |
|
|
1328 | for (i = 4; --i; ) |
|
|
1329 | { |
|
|
1330 | rtmn_diff = ev_rt_now - mn_now; |
1685 | rtmn_diff = ev_rt_now - mn_now; |
1331 | |
1686 | |
1332 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
1687 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1333 | return; /* all is well */ |
1688 | return; /* all is well */ |
1334 | |
1689 | |
1335 | ev_rt_now = ev_time (); |
1690 | ev_rt_now = ev_time (); |
1336 | mn_now = get_clock (); |
1691 | mn_now = get_clock (); |
1337 | now_floor = mn_now; |
1692 | now_floor = mn_now; |
1338 | } |
1693 | } |
1339 | |
1694 | |
1340 | # if EV_PERIODIC_ENABLE |
1695 | # if EV_PERIODIC_ENABLE |
1341 | periodics_reschedule (EV_A); |
1696 | periodics_reschedule (EV_A); |
1342 | # endif |
1697 | # endif |
1343 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1698 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1344 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1699 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1345 | } |
|
|
1346 | } |
1700 | } |
1347 | else |
1701 | else |
1348 | #endif |
1702 | #endif |
1349 | { |
1703 | { |
1350 | ev_rt_now = ev_time (); |
1704 | ev_rt_now = ev_time (); |
1351 | |
1705 | |
1352 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
1706 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
1353 | { |
1707 | { |
1354 | #if EV_PERIODIC_ENABLE |
1708 | #if EV_PERIODIC_ENABLE |
1355 | periodics_reschedule (EV_A); |
1709 | periodics_reschedule (EV_A); |
1356 | #endif |
1710 | #endif |
1357 | |
|
|
1358 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1711 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1359 | for (i = 0; i < timercnt; ++i) |
1712 | for (i = 1; i <= timercnt; ++i) |
1360 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
1713 | ev_at (timers [i]) += ev_rt_now - mn_now; |
1361 | } |
1714 | } |
1362 | |
1715 | |
1363 | mn_now = ev_rt_now; |
1716 | mn_now = ev_rt_now; |
1364 | } |
1717 | } |
1365 | } |
1718 | } |
… | |
… | |
1379 | static int loop_done; |
1732 | static int loop_done; |
1380 | |
1733 | |
1381 | void |
1734 | void |
1382 | ev_loop (EV_P_ int flags) |
1735 | ev_loop (EV_P_ int flags) |
1383 | { |
1736 | { |
1384 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1737 | loop_done = EVUNLOOP_CANCEL; |
1385 | ? EVUNLOOP_ONE |
|
|
1386 | : EVUNLOOP_CANCEL; |
|
|
1387 | |
1738 | |
1388 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1739 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1389 | |
1740 | |
1390 | do |
1741 | do |
1391 | { |
1742 | { |
… | |
… | |
1406 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1757 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1407 | call_pending (EV_A); |
1758 | call_pending (EV_A); |
1408 | } |
1759 | } |
1409 | #endif |
1760 | #endif |
1410 | |
1761 | |
1411 | /* queue check watchers (and execute them) */ |
1762 | /* queue prepare watchers (and execute them) */ |
1412 | if (expect_false (preparecnt)) |
1763 | if (expect_false (preparecnt)) |
1413 | { |
1764 | { |
1414 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1765 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1415 | call_pending (EV_A); |
1766 | call_pending (EV_A); |
1416 | } |
1767 | } |
… | |
… | |
1425 | /* update fd-related kernel structures */ |
1776 | /* update fd-related kernel structures */ |
1426 | fd_reify (EV_A); |
1777 | fd_reify (EV_A); |
1427 | |
1778 | |
1428 | /* calculate blocking time */ |
1779 | /* calculate blocking time */ |
1429 | { |
1780 | { |
1430 | ev_tstamp block; |
1781 | ev_tstamp waittime = 0.; |
|
|
1782 | ev_tstamp sleeptime = 0.; |
1431 | |
1783 | |
1432 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1784 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1433 | block = 0.; /* do not block at all */ |
|
|
1434 | else |
|
|
1435 | { |
1785 | { |
1436 | /* update time to cancel out callback processing overhead */ |
1786 | /* update time to cancel out callback processing overhead */ |
1437 | #if EV_USE_MONOTONIC |
|
|
1438 | if (expect_true (have_monotonic)) |
|
|
1439 | time_update_monotonic (EV_A); |
1787 | time_update (EV_A_ 1e100); |
1440 | else |
|
|
1441 | #endif |
|
|
1442 | { |
|
|
1443 | ev_rt_now = ev_time (); |
|
|
1444 | mn_now = ev_rt_now; |
|
|
1445 | } |
|
|
1446 | |
1788 | |
1447 | block = MAX_BLOCKTIME; |
1789 | waittime = MAX_BLOCKTIME; |
1448 | |
1790 | |
1449 | if (timercnt) |
1791 | if (timercnt) |
1450 | { |
1792 | { |
1451 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1793 | ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; |
1452 | if (block > to) block = to; |
1794 | if (waittime > to) waittime = to; |
1453 | } |
1795 | } |
1454 | |
1796 | |
1455 | #if EV_PERIODIC_ENABLE |
1797 | #if EV_PERIODIC_ENABLE |
1456 | if (periodiccnt) |
1798 | if (periodiccnt) |
1457 | { |
1799 | { |
1458 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1800 | ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1459 | if (block > to) block = to; |
1801 | if (waittime > to) waittime = to; |
1460 | } |
1802 | } |
1461 | #endif |
1803 | #endif |
1462 | |
1804 | |
1463 | if (expect_false (block < 0.)) block = 0.; |
1805 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1806 | waittime = timeout_blocktime; |
|
|
1807 | |
|
|
1808 | sleeptime = waittime - backend_fudge; |
|
|
1809 | |
|
|
1810 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1811 | sleeptime = io_blocktime; |
|
|
1812 | |
|
|
1813 | if (sleeptime) |
|
|
1814 | { |
|
|
1815 | ev_sleep (sleeptime); |
|
|
1816 | waittime -= sleeptime; |
|
|
1817 | } |
1464 | } |
1818 | } |
1465 | |
1819 | |
1466 | ++loop_count; |
1820 | ++loop_count; |
1467 | backend_poll (EV_A_ block); |
1821 | backend_poll (EV_A_ waittime); |
|
|
1822 | |
|
|
1823 | /* update ev_rt_now, do magic */ |
|
|
1824 | time_update (EV_A_ waittime + sleeptime); |
1468 | } |
1825 | } |
1469 | |
|
|
1470 | /* update ev_rt_now, do magic */ |
|
|
1471 | time_update (EV_A); |
|
|
1472 | |
1826 | |
1473 | /* queue pending timers and reschedule them */ |
1827 | /* queue pending timers and reschedule them */ |
1474 | timers_reify (EV_A); /* relative timers called last */ |
1828 | timers_reify (EV_A); /* relative timers called last */ |
1475 | #if EV_PERIODIC_ENABLE |
1829 | #if EV_PERIODIC_ENABLE |
1476 | periodics_reify (EV_A); /* absolute timers called first */ |
1830 | periodics_reify (EV_A); /* absolute timers called first */ |
… | |
… | |
1484 | /* queue check watchers, to be executed first */ |
1838 | /* queue check watchers, to be executed first */ |
1485 | if (expect_false (checkcnt)) |
1839 | if (expect_false (checkcnt)) |
1486 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1840 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1487 | |
1841 | |
1488 | call_pending (EV_A); |
1842 | call_pending (EV_A); |
1489 | |
|
|
1490 | } |
1843 | } |
1491 | while (expect_true (activecnt && !loop_done)); |
1844 | while (expect_true ( |
|
|
1845 | activecnt |
|
|
1846 | && !loop_done |
|
|
1847 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1848 | )); |
1492 | |
1849 | |
1493 | if (loop_done == EVUNLOOP_ONE) |
1850 | if (loop_done == EVUNLOOP_ONE) |
1494 | loop_done = EVUNLOOP_CANCEL; |
1851 | loop_done = EVUNLOOP_CANCEL; |
1495 | } |
1852 | } |
1496 | |
1853 | |
… | |
… | |
1532 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1889 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1533 | w->pending = 0; |
1890 | w->pending = 0; |
1534 | } |
1891 | } |
1535 | } |
1892 | } |
1536 | |
1893 | |
1537 | void |
1894 | int |
1538 | ev_clear_pending (EV_P_ void *w, int invoke) |
1895 | ev_clear_pending (EV_P_ void *w) |
1539 | { |
1896 | { |
1540 | W w_ = (W)w; |
1897 | W w_ = (W)w; |
1541 | int pending = w_->pending; |
1898 | int pending = w_->pending; |
1542 | |
1899 | |
1543 | if (pending) |
1900 | if (expect_true (pending)) |
1544 | { |
1901 | { |
1545 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
1902 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
1546 | |
|
|
1547 | w_->pending = 0; |
1903 | w_->pending = 0; |
1548 | p->w = 0; |
1904 | p->w = 0; |
1549 | |
1905 | return p->events; |
1550 | if (invoke) |
|
|
1551 | EV_CB_INVOKE (w_, p->events); |
|
|
1552 | } |
1906 | } |
|
|
1907 | else |
|
|
1908 | return 0; |
1553 | } |
1909 | } |
1554 | |
1910 | |
1555 | void inline_size |
1911 | void inline_size |
1556 | pri_adjust (EV_P_ W w) |
1912 | pri_adjust (EV_P_ W w) |
1557 | { |
1913 | { |
… | |
… | |
1576 | w->active = 0; |
1932 | w->active = 0; |
1577 | } |
1933 | } |
1578 | |
1934 | |
1579 | /*****************************************************************************/ |
1935 | /*****************************************************************************/ |
1580 | |
1936 | |
1581 | void |
1937 | void noinline |
1582 | ev_io_start (EV_P_ ev_io *w) |
1938 | ev_io_start (EV_P_ ev_io *w) |
1583 | { |
1939 | { |
1584 | int fd = w->fd; |
1940 | int fd = w->fd; |
1585 | |
1941 | |
1586 | if (expect_false (ev_is_active (w))) |
1942 | if (expect_false (ev_is_active (w))) |
… | |
… | |
1588 | |
1944 | |
1589 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1945 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1590 | |
1946 | |
1591 | ev_start (EV_A_ (W)w, 1); |
1947 | ev_start (EV_A_ (W)w, 1); |
1592 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1948 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1593 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1949 | wlist_add (&anfds[fd].head, (WL)w); |
1594 | |
1950 | |
1595 | fd_change (EV_A_ fd); |
1951 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1952 | w->events &= ~EV_IOFDSET; |
1596 | } |
1953 | } |
1597 | |
1954 | |
1598 | void |
1955 | void noinline |
1599 | ev_io_stop (EV_P_ ev_io *w) |
1956 | ev_io_stop (EV_P_ ev_io *w) |
1600 | { |
1957 | { |
1601 | clear_pending (EV_A_ (W)w); |
1958 | clear_pending (EV_A_ (W)w); |
1602 | if (expect_false (!ev_is_active (w))) |
1959 | if (expect_false (!ev_is_active (w))) |
1603 | return; |
1960 | return; |
1604 | |
1961 | |
1605 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1962 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1606 | |
1963 | |
1607 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1964 | wlist_del (&anfds[w->fd].head, (WL)w); |
1608 | ev_stop (EV_A_ (W)w); |
1965 | ev_stop (EV_A_ (W)w); |
1609 | |
1966 | |
1610 | fd_change (EV_A_ w->fd); |
1967 | fd_change (EV_A_ w->fd, 1); |
1611 | } |
1968 | } |
1612 | |
1969 | |
1613 | void |
1970 | void noinline |
1614 | ev_timer_start (EV_P_ ev_timer *w) |
1971 | ev_timer_start (EV_P_ ev_timer *w) |
1615 | { |
1972 | { |
1616 | if (expect_false (ev_is_active (w))) |
1973 | if (expect_false (ev_is_active (w))) |
1617 | return; |
1974 | return; |
1618 | |
1975 | |
1619 | ((WT)w)->at += mn_now; |
1976 | ev_at (w) += mn_now; |
1620 | |
1977 | |
1621 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1978 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1622 | |
1979 | |
1623 | ev_start (EV_A_ (W)w, ++timercnt); |
1980 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
1624 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
1981 | array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); |
1625 | timers [timercnt - 1] = w; |
1982 | timers [ev_active (w)] = (WT)w; |
1626 | upheap ((WT *)timers, timercnt - 1); |
1983 | upheap (timers, ev_active (w)); |
1627 | |
1984 | |
1628 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
1985 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ |
1629 | } |
1986 | } |
1630 | |
1987 | |
1631 | void |
1988 | void noinline |
1632 | ev_timer_stop (EV_P_ ev_timer *w) |
1989 | ev_timer_stop (EV_P_ ev_timer *w) |
1633 | { |
1990 | { |
1634 | clear_pending (EV_A_ (W)w); |
1991 | clear_pending (EV_A_ (W)w); |
1635 | if (expect_false (!ev_is_active (w))) |
1992 | if (expect_false (!ev_is_active (w))) |
1636 | return; |
1993 | return; |
1637 | |
1994 | |
1638 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1639 | |
|
|
1640 | { |
1995 | { |
1641 | int active = ((W)w)->active; |
1996 | int active = ev_active (w); |
1642 | |
1997 | |
|
|
1998 | assert (("internal timer heap corruption", timers [active] == (WT)w)); |
|
|
1999 | |
1643 | if (expect_true (--active < --timercnt)) |
2000 | if (expect_true (active < timercnt + HEAP0 - 1)) |
1644 | { |
2001 | { |
1645 | timers [active] = timers [timercnt]; |
2002 | timers [active] = timers [timercnt + HEAP0 - 1]; |
1646 | adjustheap ((WT *)timers, timercnt, active); |
2003 | adjustheap (timers, timercnt, active); |
1647 | } |
2004 | } |
|
|
2005 | |
|
|
2006 | --timercnt; |
1648 | } |
2007 | } |
1649 | |
2008 | |
1650 | ((WT)w)->at -= mn_now; |
2009 | ev_at (w) -= mn_now; |
1651 | |
2010 | |
1652 | ev_stop (EV_A_ (W)w); |
2011 | ev_stop (EV_A_ (W)w); |
1653 | } |
2012 | } |
1654 | |
2013 | |
1655 | void |
2014 | void noinline |
1656 | ev_timer_again (EV_P_ ev_timer *w) |
2015 | ev_timer_again (EV_P_ ev_timer *w) |
1657 | { |
2016 | { |
1658 | if (ev_is_active (w)) |
2017 | if (ev_is_active (w)) |
1659 | { |
2018 | { |
1660 | if (w->repeat) |
2019 | if (w->repeat) |
1661 | { |
2020 | { |
1662 | ((WT)w)->at = mn_now + w->repeat; |
2021 | ev_at (w) = mn_now + w->repeat; |
1663 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2022 | adjustheap (timers, timercnt, ev_active (w)); |
1664 | } |
2023 | } |
1665 | else |
2024 | else |
1666 | ev_timer_stop (EV_A_ w); |
2025 | ev_timer_stop (EV_A_ w); |
1667 | } |
2026 | } |
1668 | else if (w->repeat) |
2027 | else if (w->repeat) |
1669 | { |
2028 | { |
1670 | w->at = w->repeat; |
2029 | ev_at (w) = w->repeat; |
1671 | ev_timer_start (EV_A_ w); |
2030 | ev_timer_start (EV_A_ w); |
1672 | } |
2031 | } |
1673 | } |
2032 | } |
1674 | |
2033 | |
1675 | #if EV_PERIODIC_ENABLE |
2034 | #if EV_PERIODIC_ENABLE |
1676 | void |
2035 | void noinline |
1677 | ev_periodic_start (EV_P_ ev_periodic *w) |
2036 | ev_periodic_start (EV_P_ ev_periodic *w) |
1678 | { |
2037 | { |
1679 | if (expect_false (ev_is_active (w))) |
2038 | if (expect_false (ev_is_active (w))) |
1680 | return; |
2039 | return; |
1681 | |
2040 | |
1682 | if (w->reschedule_cb) |
2041 | if (w->reschedule_cb) |
1683 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
2042 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1684 | else if (w->interval) |
2043 | else if (w->interval) |
1685 | { |
2044 | { |
1686 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2045 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1687 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2046 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1688 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
2047 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1689 | } |
2048 | } |
|
|
2049 | else |
|
|
2050 | ev_at (w) = w->offset; |
1690 | |
2051 | |
1691 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2052 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
1692 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
2053 | array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); |
1693 | periodics [periodiccnt - 1] = w; |
2054 | periodics [ev_active (w)] = (WT)w; |
1694 | upheap ((WT *)periodics, periodiccnt - 1); |
2055 | upheap (periodics, ev_active (w)); |
1695 | |
2056 | |
1696 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
2057 | /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ |
1697 | } |
2058 | } |
1698 | |
2059 | |
1699 | void |
2060 | void noinline |
1700 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2061 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1701 | { |
2062 | { |
1702 | clear_pending (EV_A_ (W)w); |
2063 | clear_pending (EV_A_ (W)w); |
1703 | if (expect_false (!ev_is_active (w))) |
2064 | if (expect_false (!ev_is_active (w))) |
1704 | return; |
2065 | return; |
1705 | |
2066 | |
1706 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1707 | |
|
|
1708 | { |
2067 | { |
1709 | int active = ((W)w)->active; |
2068 | int active = ev_active (w); |
1710 | |
2069 | |
|
|
2070 | assert (("internal periodic heap corruption", periodics [active] == (WT)w)); |
|
|
2071 | |
1711 | if (expect_true (--active < --periodiccnt)) |
2072 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
1712 | { |
2073 | { |
1713 | periodics [active] = periodics [periodiccnt]; |
2074 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
1714 | adjustheap ((WT *)periodics, periodiccnt, active); |
2075 | adjustheap (periodics, periodiccnt, active); |
1715 | } |
2076 | } |
|
|
2077 | |
|
|
2078 | --periodiccnt; |
1716 | } |
2079 | } |
1717 | |
2080 | |
1718 | ev_stop (EV_A_ (W)w); |
2081 | ev_stop (EV_A_ (W)w); |
1719 | } |
2082 | } |
1720 | |
2083 | |
1721 | void |
2084 | void noinline |
1722 | ev_periodic_again (EV_P_ ev_periodic *w) |
2085 | ev_periodic_again (EV_P_ ev_periodic *w) |
1723 | { |
2086 | { |
1724 | /* TODO: use adjustheap and recalculation */ |
2087 | /* TODO: use adjustheap and recalculation */ |
1725 | ev_periodic_stop (EV_A_ w); |
2088 | ev_periodic_stop (EV_A_ w); |
1726 | ev_periodic_start (EV_A_ w); |
2089 | ev_periodic_start (EV_A_ w); |
… | |
… | |
1729 | |
2092 | |
1730 | #ifndef SA_RESTART |
2093 | #ifndef SA_RESTART |
1731 | # define SA_RESTART 0 |
2094 | # define SA_RESTART 0 |
1732 | #endif |
2095 | #endif |
1733 | |
2096 | |
1734 | void |
2097 | void noinline |
1735 | ev_signal_start (EV_P_ ev_signal *w) |
2098 | ev_signal_start (EV_P_ ev_signal *w) |
1736 | { |
2099 | { |
1737 | #if EV_MULTIPLICITY |
2100 | #if EV_MULTIPLICITY |
1738 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2101 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1739 | #endif |
2102 | #endif |
1740 | if (expect_false (ev_is_active (w))) |
2103 | if (expect_false (ev_is_active (w))) |
1741 | return; |
2104 | return; |
1742 | |
2105 | |
1743 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2106 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1744 | |
2107 | |
|
|
2108 | evpipe_init (EV_A); |
|
|
2109 | |
|
|
2110 | { |
|
|
2111 | #ifndef _WIN32 |
|
|
2112 | sigset_t full, prev; |
|
|
2113 | sigfillset (&full); |
|
|
2114 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2115 | #endif |
|
|
2116 | |
|
|
2117 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2118 | |
|
|
2119 | #ifndef _WIN32 |
|
|
2120 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2121 | #endif |
|
|
2122 | } |
|
|
2123 | |
1745 | ev_start (EV_A_ (W)w, 1); |
2124 | ev_start (EV_A_ (W)w, 1); |
1746 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1747 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2125 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1748 | |
2126 | |
1749 | if (!((WL)w)->next) |
2127 | if (!((WL)w)->next) |
1750 | { |
2128 | { |
1751 | #if _WIN32 |
2129 | #if _WIN32 |
1752 | signal (w->signum, sighandler); |
2130 | signal (w->signum, ev_sighandler); |
1753 | #else |
2131 | #else |
1754 | struct sigaction sa; |
2132 | struct sigaction sa; |
1755 | sa.sa_handler = sighandler; |
2133 | sa.sa_handler = ev_sighandler; |
1756 | sigfillset (&sa.sa_mask); |
2134 | sigfillset (&sa.sa_mask); |
1757 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2135 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1758 | sigaction (w->signum, &sa, 0); |
2136 | sigaction (w->signum, &sa, 0); |
1759 | #endif |
2137 | #endif |
1760 | } |
2138 | } |
1761 | } |
2139 | } |
1762 | |
2140 | |
1763 | void |
2141 | void noinline |
1764 | ev_signal_stop (EV_P_ ev_signal *w) |
2142 | ev_signal_stop (EV_P_ ev_signal *w) |
1765 | { |
2143 | { |
1766 | clear_pending (EV_A_ (W)w); |
2144 | clear_pending (EV_A_ (W)w); |
1767 | if (expect_false (!ev_is_active (w))) |
2145 | if (expect_false (!ev_is_active (w))) |
1768 | return; |
2146 | return; |
1769 | |
2147 | |
1770 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2148 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1771 | ev_stop (EV_A_ (W)w); |
2149 | ev_stop (EV_A_ (W)w); |
1772 | |
2150 | |
1773 | if (!signals [w->signum - 1].head) |
2151 | if (!signals [w->signum - 1].head) |
1774 | signal (w->signum, SIG_DFL); |
2152 | signal (w->signum, SIG_DFL); |
1775 | } |
2153 | } |
… | |
… | |
1782 | #endif |
2160 | #endif |
1783 | if (expect_false (ev_is_active (w))) |
2161 | if (expect_false (ev_is_active (w))) |
1784 | return; |
2162 | return; |
1785 | |
2163 | |
1786 | ev_start (EV_A_ (W)w, 1); |
2164 | ev_start (EV_A_ (W)w, 1); |
1787 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2165 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1788 | } |
2166 | } |
1789 | |
2167 | |
1790 | void |
2168 | void |
1791 | ev_child_stop (EV_P_ ev_child *w) |
2169 | ev_child_stop (EV_P_ ev_child *w) |
1792 | { |
2170 | { |
1793 | clear_pending (EV_A_ (W)w); |
2171 | clear_pending (EV_A_ (W)w); |
1794 | if (expect_false (!ev_is_active (w))) |
2172 | if (expect_false (!ev_is_active (w))) |
1795 | return; |
2173 | return; |
1796 | |
2174 | |
1797 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2175 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1798 | ev_stop (EV_A_ (W)w); |
2176 | ev_stop (EV_A_ (W)w); |
1799 | } |
2177 | } |
1800 | |
2178 | |
1801 | #if EV_STAT_ENABLE |
2179 | #if EV_STAT_ENABLE |
1802 | |
2180 | |
… | |
… | |
1821 | if (w->wd < 0) |
2199 | if (w->wd < 0) |
1822 | { |
2200 | { |
1823 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2201 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
1824 | |
2202 | |
1825 | /* monitor some parent directory for speedup hints */ |
2203 | /* monitor some parent directory for speedup hints */ |
|
|
2204 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2205 | /* but an efficiency issue only */ |
1826 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2206 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
1827 | { |
2207 | { |
1828 | char path [4096]; |
2208 | char path [4096]; |
1829 | strcpy (path, w->path); |
2209 | strcpy (path, w->path); |
1830 | |
2210 | |
… | |
… | |
2075 | clear_pending (EV_A_ (W)w); |
2455 | clear_pending (EV_A_ (W)w); |
2076 | if (expect_false (!ev_is_active (w))) |
2456 | if (expect_false (!ev_is_active (w))) |
2077 | return; |
2457 | return; |
2078 | |
2458 | |
2079 | { |
2459 | { |
2080 | int active = ((W)w)->active; |
2460 | int active = ev_active (w); |
2081 | |
2461 | |
2082 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2462 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2083 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
2463 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
2084 | |
2464 | |
2085 | ev_stop (EV_A_ (W)w); |
2465 | ev_stop (EV_A_ (W)w); |
2086 | --idleall; |
2466 | --idleall; |
2087 | } |
2467 | } |
2088 | } |
2468 | } |
… | |
… | |
2105 | clear_pending (EV_A_ (W)w); |
2485 | clear_pending (EV_A_ (W)w); |
2106 | if (expect_false (!ev_is_active (w))) |
2486 | if (expect_false (!ev_is_active (w))) |
2107 | return; |
2487 | return; |
2108 | |
2488 | |
2109 | { |
2489 | { |
2110 | int active = ((W)w)->active; |
2490 | int active = ev_active (w); |
|
|
2491 | |
2111 | prepares [active - 1] = prepares [--preparecnt]; |
2492 | prepares [active - 1] = prepares [--preparecnt]; |
2112 | ((W)prepares [active - 1])->active = active; |
2493 | ev_active (prepares [active - 1]) = active; |
2113 | } |
2494 | } |
2114 | |
2495 | |
2115 | ev_stop (EV_A_ (W)w); |
2496 | ev_stop (EV_A_ (W)w); |
2116 | } |
2497 | } |
2117 | |
2498 | |
… | |
… | |
2132 | clear_pending (EV_A_ (W)w); |
2513 | clear_pending (EV_A_ (W)w); |
2133 | if (expect_false (!ev_is_active (w))) |
2514 | if (expect_false (!ev_is_active (w))) |
2134 | return; |
2515 | return; |
2135 | |
2516 | |
2136 | { |
2517 | { |
2137 | int active = ((W)w)->active; |
2518 | int active = ev_active (w); |
|
|
2519 | |
2138 | checks [active - 1] = checks [--checkcnt]; |
2520 | checks [active - 1] = checks [--checkcnt]; |
2139 | ((W)checks [active - 1])->active = active; |
2521 | ev_active (checks [active - 1]) = active; |
2140 | } |
2522 | } |
2141 | |
2523 | |
2142 | ev_stop (EV_A_ (W)w); |
2524 | ev_stop (EV_A_ (W)w); |
2143 | } |
2525 | } |
2144 | |
2526 | |
2145 | #if EV_EMBED_ENABLE |
2527 | #if EV_EMBED_ENABLE |
2146 | void noinline |
2528 | void noinline |
2147 | ev_embed_sweep (EV_P_ ev_embed *w) |
2529 | ev_embed_sweep (EV_P_ ev_embed *w) |
2148 | { |
2530 | { |
2149 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
2531 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2150 | } |
2532 | } |
2151 | |
2533 | |
2152 | static void |
2534 | static void |
2153 | embed_cb (EV_P_ ev_io *io, int revents) |
2535 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2154 | { |
2536 | { |
2155 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2537 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2156 | |
2538 | |
2157 | if (ev_cb (w)) |
2539 | if (ev_cb (w)) |
2158 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2540 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2159 | else |
2541 | else |
2160 | ev_embed_sweep (loop, w); |
2542 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2161 | } |
2543 | } |
|
|
2544 | |
|
|
2545 | static void |
|
|
2546 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2547 | { |
|
|
2548 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2549 | |
|
|
2550 | { |
|
|
2551 | struct ev_loop *loop = w->other; |
|
|
2552 | |
|
|
2553 | while (fdchangecnt) |
|
|
2554 | { |
|
|
2555 | fd_reify (EV_A); |
|
|
2556 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2557 | } |
|
|
2558 | } |
|
|
2559 | } |
|
|
2560 | |
|
|
2561 | #if 0 |
|
|
2562 | static void |
|
|
2563 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2564 | { |
|
|
2565 | ev_idle_stop (EV_A_ idle); |
|
|
2566 | } |
|
|
2567 | #endif |
2162 | |
2568 | |
2163 | void |
2569 | void |
2164 | ev_embed_start (EV_P_ ev_embed *w) |
2570 | ev_embed_start (EV_P_ ev_embed *w) |
2165 | { |
2571 | { |
2166 | if (expect_false (ev_is_active (w))) |
2572 | if (expect_false (ev_is_active (w))) |
2167 | return; |
2573 | return; |
2168 | |
2574 | |
2169 | { |
2575 | { |
2170 | struct ev_loop *loop = w->loop; |
2576 | struct ev_loop *loop = w->other; |
2171 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2577 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2172 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
2578 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2173 | } |
2579 | } |
2174 | |
2580 | |
2175 | ev_set_priority (&w->io, ev_priority (w)); |
2581 | ev_set_priority (&w->io, ev_priority (w)); |
2176 | ev_io_start (EV_A_ &w->io); |
2582 | ev_io_start (EV_A_ &w->io); |
|
|
2583 | |
|
|
2584 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2585 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2586 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2587 | |
|
|
2588 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
2177 | |
2589 | |
2178 | ev_start (EV_A_ (W)w, 1); |
2590 | ev_start (EV_A_ (W)w, 1); |
2179 | } |
2591 | } |
2180 | |
2592 | |
2181 | void |
2593 | void |
… | |
… | |
2184 | clear_pending (EV_A_ (W)w); |
2596 | clear_pending (EV_A_ (W)w); |
2185 | if (expect_false (!ev_is_active (w))) |
2597 | if (expect_false (!ev_is_active (w))) |
2186 | return; |
2598 | return; |
2187 | |
2599 | |
2188 | ev_io_stop (EV_A_ &w->io); |
2600 | ev_io_stop (EV_A_ &w->io); |
|
|
2601 | ev_prepare_stop (EV_A_ &w->prepare); |
2189 | |
2602 | |
2190 | ev_stop (EV_A_ (W)w); |
2603 | ev_stop (EV_A_ (W)w); |
2191 | } |
2604 | } |
2192 | #endif |
2605 | #endif |
2193 | |
2606 | |
… | |
… | |
2209 | clear_pending (EV_A_ (W)w); |
2622 | clear_pending (EV_A_ (W)w); |
2210 | if (expect_false (!ev_is_active (w))) |
2623 | if (expect_false (!ev_is_active (w))) |
2211 | return; |
2624 | return; |
2212 | |
2625 | |
2213 | { |
2626 | { |
2214 | int active = ((W)w)->active; |
2627 | int active = ev_active (w); |
|
|
2628 | |
2215 | forks [active - 1] = forks [--forkcnt]; |
2629 | forks [active - 1] = forks [--forkcnt]; |
2216 | ((W)forks [active - 1])->active = active; |
2630 | ev_active (forks [active - 1]) = active; |
2217 | } |
2631 | } |
2218 | |
2632 | |
2219 | ev_stop (EV_A_ (W)w); |
2633 | ev_stop (EV_A_ (W)w); |
|
|
2634 | } |
|
|
2635 | #endif |
|
|
2636 | |
|
|
2637 | #if EV_ASYNC_ENABLE |
|
|
2638 | void |
|
|
2639 | ev_async_start (EV_P_ ev_async *w) |
|
|
2640 | { |
|
|
2641 | if (expect_false (ev_is_active (w))) |
|
|
2642 | return; |
|
|
2643 | |
|
|
2644 | evpipe_init (EV_A); |
|
|
2645 | |
|
|
2646 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2647 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2648 | asyncs [asynccnt - 1] = w; |
|
|
2649 | } |
|
|
2650 | |
|
|
2651 | void |
|
|
2652 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2653 | { |
|
|
2654 | clear_pending (EV_A_ (W)w); |
|
|
2655 | if (expect_false (!ev_is_active (w))) |
|
|
2656 | return; |
|
|
2657 | |
|
|
2658 | { |
|
|
2659 | int active = ev_active (w); |
|
|
2660 | |
|
|
2661 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2662 | ev_active (asyncs [active - 1]) = active; |
|
|
2663 | } |
|
|
2664 | |
|
|
2665 | ev_stop (EV_A_ (W)w); |
|
|
2666 | } |
|
|
2667 | |
|
|
2668 | void |
|
|
2669 | ev_async_send (EV_P_ ev_async *w) |
|
|
2670 | { |
|
|
2671 | w->sent = 1; |
|
|
2672 | evpipe_write (EV_A_ &gotasync); |
2220 | } |
2673 | } |
2221 | #endif |
2674 | #endif |
2222 | |
2675 | |
2223 | /*****************************************************************************/ |
2676 | /*****************************************************************************/ |
2224 | |
2677 | |
… | |
… | |
2282 | ev_timer_set (&once->to, timeout, 0.); |
2735 | ev_timer_set (&once->to, timeout, 0.); |
2283 | ev_timer_start (EV_A_ &once->to); |
2736 | ev_timer_start (EV_A_ &once->to); |
2284 | } |
2737 | } |
2285 | } |
2738 | } |
2286 | |
2739 | |
|
|
2740 | #if EV_MULTIPLICITY |
|
|
2741 | #include "ev_wrap.h" |
|
|
2742 | #endif |
|
|
2743 | |
2287 | #ifdef __cplusplus |
2744 | #ifdef __cplusplus |
2288 | } |
2745 | } |
2289 | #endif |
2746 | #endif |
2290 | |
2747 | |