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 | /**/ |
220 | |
284 | |
221 | /* |
285 | /* |
… | |
… | |
230 | |
294 | |
231 | #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) */ |
232 | #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) */ |
233 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
234 | |
298 | |
235 | #if __GNUC__ >= 3 |
299 | #if __GNUC__ >= 4 |
236 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
237 | # define noinline __attribute__ ((noinline)) |
301 | # define noinline __attribute__ ((noinline)) |
238 | #else |
302 | #else |
239 | # define expect(expr,value) (expr) |
303 | # define expect(expr,value) (expr) |
240 | # define noinline |
304 | # define noinline |
241 | # if __STDC_VERSION__ < 199901L |
305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
242 | # define inline |
306 | # define inline |
243 | # endif |
307 | # endif |
244 | #endif |
308 | #endif |
245 | |
309 | |
246 | #define expect_false(expr) expect ((expr) != 0, 0) |
310 | #define expect_false(expr) expect ((expr) != 0, 0) |
… | |
… | |
261 | |
325 | |
262 | typedef ev_watcher *W; |
326 | typedef ev_watcher *W; |
263 | typedef ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
264 | typedef ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
265 | |
329 | |
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330 | #if EV_USE_MONOTONIC |
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331 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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332 | /* giving it a reasonably high chance of working on typical architetcures */ |
266 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
333 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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334 | #endif |
267 | |
335 | |
268 | #ifdef _WIN32 |
336 | #ifdef _WIN32 |
269 | # include "ev_win32.c" |
337 | # include "ev_win32.c" |
270 | #endif |
338 | #endif |
271 | |
339 | |
… | |
… | |
407 | { |
475 | { |
408 | return ev_rt_now; |
476 | return ev_rt_now; |
409 | } |
477 | } |
410 | #endif |
478 | #endif |
411 | |
479 | |
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480 | void |
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481 | ev_sleep (ev_tstamp delay) |
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482 | { |
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483 | if (delay > 0.) |
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484 | { |
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485 | #if EV_USE_NANOSLEEP |
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486 | struct timespec ts; |
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487 | |
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488 | ts.tv_sec = (time_t)delay; |
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489 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
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490 | |
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491 | nanosleep (&ts, 0); |
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492 | #elif defined(_WIN32) |
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493 | Sleep ((unsigned long)(delay * 1e3)); |
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494 | #else |
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495 | struct timeval tv; |
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496 | |
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497 | tv.tv_sec = (time_t)delay; |
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498 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
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499 | |
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500 | select (0, 0, 0, 0, &tv); |
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501 | #endif |
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502 | } |
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503 | } |
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504 | |
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505 | /*****************************************************************************/ |
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506 | |
412 | int inline_size |
507 | int inline_size |
413 | array_nextsize (int elem, int cur, int cnt) |
508 | array_nextsize (int elem, int cur, int cnt) |
414 | { |
509 | { |
415 | int ncur = cur + 1; |
510 | int ncur = cur + 1; |
416 | |
511 | |
… | |
… | |
533 | { |
628 | { |
534 | int fd = fdchanges [i]; |
629 | int fd = fdchanges [i]; |
535 | ANFD *anfd = anfds + fd; |
630 | ANFD *anfd = anfds + fd; |
536 | ev_io *w; |
631 | ev_io *w; |
537 | |
632 | |
538 | int events = 0; |
633 | unsigned char events = 0; |
539 | |
634 | |
540 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
635 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
541 | events |= w->events; |
636 | events |= (unsigned char)w->events; |
542 | |
637 | |
543 | #if EV_SELECT_IS_WINSOCKET |
638 | #if EV_SELECT_IS_WINSOCKET |
544 | if (events) |
639 | if (events) |
545 | { |
640 | { |
546 | unsigned long argp; |
641 | unsigned long argp; |
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642 | #ifdef EV_FD_TO_WIN32_HANDLE |
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643 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
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644 | #else |
547 | anfd->handle = _get_osfhandle (fd); |
645 | anfd->handle = _get_osfhandle (fd); |
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646 | #endif |
548 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
647 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
549 | } |
648 | } |
550 | #endif |
649 | #endif |
551 | |
650 | |
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651 | { |
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652 | unsigned char o_events = anfd->events; |
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653 | unsigned char o_reify = anfd->reify; |
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654 | |
552 | anfd->reify = 0; |
655 | anfd->reify = 0; |
553 | |
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554 | backend_modify (EV_A_ fd, anfd->events, events); |
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555 | anfd->events = events; |
656 | anfd->events = events; |
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657 | |
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658 | if (o_events != events || o_reify & EV_IOFDSET) |
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659 | backend_modify (EV_A_ fd, o_events, events); |
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660 | } |
556 | } |
661 | } |
557 | |
662 | |
558 | fdchangecnt = 0; |
663 | fdchangecnt = 0; |
559 | } |
664 | } |
560 | |
665 | |
561 | void inline_size |
666 | void inline_size |
562 | fd_change (EV_P_ int fd) |
667 | fd_change (EV_P_ int fd, int flags) |
563 | { |
668 | { |
564 | if (expect_false (anfds [fd].reify)) |
669 | unsigned char reify = anfds [fd].reify; |
565 | return; |
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566 | |
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567 | anfds [fd].reify = 1; |
670 | anfds [fd].reify |= flags; |
568 | |
671 | |
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672 | if (expect_true (!reify)) |
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673 | { |
569 | ++fdchangecnt; |
674 | ++fdchangecnt; |
570 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
675 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
571 | fdchanges [fdchangecnt - 1] = fd; |
676 | fdchanges [fdchangecnt - 1] = fd; |
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677 | } |
572 | } |
678 | } |
573 | |
679 | |
574 | void inline_speed |
680 | void inline_speed |
575 | fd_kill (EV_P_ int fd) |
681 | fd_kill (EV_P_ int fd) |
576 | { |
682 | { |
… | |
… | |
627 | |
733 | |
628 | for (fd = 0; fd < anfdmax; ++fd) |
734 | for (fd = 0; fd < anfdmax; ++fd) |
629 | if (anfds [fd].events) |
735 | if (anfds [fd].events) |
630 | { |
736 | { |
631 | anfds [fd].events = 0; |
737 | anfds [fd].events = 0; |
632 | fd_change (EV_A_ fd); |
738 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
633 | } |
739 | } |
634 | } |
740 | } |
635 | |
741 | |
636 | /*****************************************************************************/ |
742 | /*****************************************************************************/ |
637 | |
743 | |
… | |
… | |
694 | /*****************************************************************************/ |
800 | /*****************************************************************************/ |
695 | |
801 | |
696 | typedef struct |
802 | typedef struct |
697 | { |
803 | { |
698 | WL head; |
804 | WL head; |
699 | sig_atomic_t volatile gotsig; |
805 | EV_ATOMIC_T gotsig; |
700 | } ANSIG; |
806 | } ANSIG; |
701 | |
807 | |
702 | static ANSIG *signals; |
808 | static ANSIG *signals; |
703 | static int signalmax; |
809 | static int signalmax; |
704 | |
810 | |
705 | static int sigpipe [2]; |
811 | static EV_ATOMIC_T gotsig; |
706 | static sig_atomic_t volatile gotsig; |
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707 | static ev_io sigev; |
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708 | |
812 | |
709 | void inline_size |
813 | void inline_size |
710 | signals_init (ANSIG *base, int count) |
814 | signals_init (ANSIG *base, int count) |
711 | { |
815 | { |
712 | while (count--) |
816 | while (count--) |
… | |
… | |
716 | |
820 | |
717 | ++base; |
821 | ++base; |
718 | } |
822 | } |
719 | } |
823 | } |
720 | |
824 | |
721 | static void |
825 | /*****************************************************************************/ |
722 | sighandler (int signum) |
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723 | { |
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724 | #if _WIN32 |
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725 | signal (signum, sighandler); |
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726 | #endif |
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727 | |
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728 | signals [signum - 1].gotsig = 1; |
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729 | |
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730 | if (!gotsig) |
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731 | { |
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732 | int old_errno = errno; |
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733 | gotsig = 1; |
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734 | write (sigpipe [1], &signum, 1); |
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735 | errno = old_errno; |
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736 | } |
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737 | } |
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738 | |
|
|
739 | void noinline |
|
|
740 | ev_feed_signal_event (EV_P_ int signum) |
|
|
741 | { |
|
|
742 | WL w; |
|
|
743 | |
|
|
744 | #if EV_MULTIPLICITY |
|
|
745 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
746 | #endif |
|
|
747 | |
|
|
748 | --signum; |
|
|
749 | |
|
|
750 | if (signum < 0 || signum >= signalmax) |
|
|
751 | return; |
|
|
752 | |
|
|
753 | signals [signum].gotsig = 0; |
|
|
754 | |
|
|
755 | for (w = signals [signum].head; w; w = w->next) |
|
|
756 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
757 | } |
|
|
758 | |
|
|
759 | static void |
|
|
760 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
761 | { |
|
|
762 | int signum; |
|
|
763 | |
|
|
764 | read (sigpipe [0], &revents, 1); |
|
|
765 | gotsig = 0; |
|
|
766 | |
|
|
767 | for (signum = signalmax; signum--; ) |
|
|
768 | if (signals [signum].gotsig) |
|
|
769 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
770 | } |
|
|
771 | |
826 | |
772 | void inline_speed |
827 | void inline_speed |
773 | fd_intern (int fd) |
828 | fd_intern (int fd) |
774 | { |
829 | { |
775 | #ifdef _WIN32 |
830 | #ifdef _WIN32 |
… | |
… | |
780 | fcntl (fd, F_SETFL, O_NONBLOCK); |
835 | fcntl (fd, F_SETFL, O_NONBLOCK); |
781 | #endif |
836 | #endif |
782 | } |
837 | } |
783 | |
838 | |
784 | static void noinline |
839 | static void noinline |
785 | siginit (EV_P) |
840 | evpipe_init (EV_P) |
786 | { |
841 | { |
|
|
842 | if (!ev_is_active (&pipeev)) |
|
|
843 | { |
|
|
844 | #if EV_USE_EVENTFD |
|
|
845 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
846 | { |
|
|
847 | evpipe [0] = -1; |
|
|
848 | fd_intern (evfd); |
|
|
849 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
850 | } |
|
|
851 | else |
|
|
852 | #endif |
|
|
853 | { |
|
|
854 | while (pipe (evpipe)) |
|
|
855 | syserr ("(libev) error creating signal/async pipe"); |
|
|
856 | |
787 | fd_intern (sigpipe [0]); |
857 | fd_intern (evpipe [0]); |
788 | fd_intern (sigpipe [1]); |
858 | fd_intern (evpipe [1]); |
|
|
859 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
860 | } |
789 | |
861 | |
790 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
791 | ev_io_start (EV_A_ &sigev); |
862 | ev_io_start (EV_A_ &pipeev); |
792 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
863 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
864 | } |
|
|
865 | } |
|
|
866 | |
|
|
867 | void inline_size |
|
|
868 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
869 | { |
|
|
870 | if (!*flag) |
|
|
871 | { |
|
|
872 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
873 | |
|
|
874 | *flag = 1; |
|
|
875 | |
|
|
876 | #if EV_USE_EVENTFD |
|
|
877 | if (evfd >= 0) |
|
|
878 | { |
|
|
879 | uint64_t counter = 1; |
|
|
880 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
881 | } |
|
|
882 | else |
|
|
883 | #endif |
|
|
884 | write (evpipe [1], &old_errno, 1); |
|
|
885 | |
|
|
886 | errno = old_errno; |
|
|
887 | } |
|
|
888 | } |
|
|
889 | |
|
|
890 | static void |
|
|
891 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
892 | { |
|
|
893 | #if EV_USE_EVENTFD |
|
|
894 | if (evfd >= 0) |
|
|
895 | { |
|
|
896 | uint64_t counter = 1; |
|
|
897 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
898 | } |
|
|
899 | else |
|
|
900 | #endif |
|
|
901 | { |
|
|
902 | char dummy; |
|
|
903 | read (evpipe [0], &dummy, 1); |
|
|
904 | } |
|
|
905 | |
|
|
906 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
907 | { |
|
|
908 | int signum; |
|
|
909 | gotsig = 0; |
|
|
910 | |
|
|
911 | for (signum = signalmax; signum--; ) |
|
|
912 | if (signals [signum].gotsig) |
|
|
913 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
914 | } |
|
|
915 | |
|
|
916 | #if EV_ASYNC_ENABLE |
|
|
917 | if (gotasync) |
|
|
918 | { |
|
|
919 | int i; |
|
|
920 | gotasync = 0; |
|
|
921 | |
|
|
922 | for (i = asynccnt; i--; ) |
|
|
923 | if (asyncs [i]->sent) |
|
|
924 | { |
|
|
925 | asyncs [i]->sent = 0; |
|
|
926 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
927 | } |
|
|
928 | } |
|
|
929 | #endif |
793 | } |
930 | } |
794 | |
931 | |
795 | /*****************************************************************************/ |
932 | /*****************************************************************************/ |
796 | |
933 | |
|
|
934 | static void |
|
|
935 | ev_sighandler (int signum) |
|
|
936 | { |
|
|
937 | #if EV_MULTIPLICITY |
|
|
938 | struct ev_loop *loop = &default_loop_struct; |
|
|
939 | #endif |
|
|
940 | |
|
|
941 | #if _WIN32 |
|
|
942 | signal (signum, ev_sighandler); |
|
|
943 | #endif |
|
|
944 | |
|
|
945 | signals [signum - 1].gotsig = 1; |
|
|
946 | evpipe_write (EV_A_ &gotsig); |
|
|
947 | } |
|
|
948 | |
|
|
949 | void noinline |
|
|
950 | ev_feed_signal_event (EV_P_ int signum) |
|
|
951 | { |
|
|
952 | WL w; |
|
|
953 | |
|
|
954 | #if EV_MULTIPLICITY |
|
|
955 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | --signum; |
|
|
959 | |
|
|
960 | if (signum < 0 || signum >= signalmax) |
|
|
961 | return; |
|
|
962 | |
|
|
963 | signals [signum].gotsig = 0; |
|
|
964 | |
|
|
965 | for (w = signals [signum].head; w; w = w->next) |
|
|
966 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
967 | } |
|
|
968 | |
|
|
969 | /*****************************************************************************/ |
|
|
970 | |
797 | static WL childs [EV_PID_HASHSIZE]; |
971 | static WL childs [EV_PID_HASHSIZE]; |
798 | |
972 | |
799 | #ifndef _WIN32 |
973 | #ifndef _WIN32 |
800 | |
974 | |
801 | static ev_signal childev; |
975 | static ev_signal childev; |
802 | |
976 | |
|
|
977 | #ifndef WIFCONTINUED |
|
|
978 | # define WIFCONTINUED(status) 0 |
|
|
979 | #endif |
|
|
980 | |
803 | void inline_speed |
981 | void inline_speed |
804 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
982 | child_reap (EV_P_ int chain, int pid, int status) |
805 | { |
983 | { |
806 | ev_child *w; |
984 | ev_child *w; |
|
|
985 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
807 | |
986 | |
808 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
987 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
988 | { |
809 | if (w->pid == pid || !w->pid) |
989 | if ((w->pid == pid || !w->pid) |
|
|
990 | && (!traced || (w->flags & 1))) |
810 | { |
991 | { |
811 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
992 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
812 | w->rpid = pid; |
993 | w->rpid = pid; |
813 | w->rstatus = status; |
994 | w->rstatus = status; |
814 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
995 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
815 | } |
996 | } |
|
|
997 | } |
816 | } |
998 | } |
817 | |
999 | |
818 | #ifndef WCONTINUED |
1000 | #ifndef WCONTINUED |
819 | # define WCONTINUED 0 |
1001 | # define WCONTINUED 0 |
820 | #endif |
1002 | #endif |
… | |
… | |
829 | if (!WCONTINUED |
1011 | if (!WCONTINUED |
830 | || errno != EINVAL |
1012 | || errno != EINVAL |
831 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1013 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
832 | return; |
1014 | return; |
833 | |
1015 | |
834 | /* make sure we are called again until all childs have been reaped */ |
1016 | /* make sure we are called again until all children have been reaped */ |
835 | /* we need to do it this way so that the callback gets called before we continue */ |
1017 | /* we need to do it this way so that the callback gets called before we continue */ |
836 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1018 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
837 | |
1019 | |
838 | child_reap (EV_A_ sw, pid, pid, status); |
1020 | child_reap (EV_A_ pid, pid, status); |
839 | if (EV_PID_HASHSIZE > 1) |
1021 | if (EV_PID_HASHSIZE > 1) |
840 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1022 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
841 | } |
1023 | } |
842 | |
1024 | |
843 | #endif |
1025 | #endif |
844 | |
1026 | |
845 | /*****************************************************************************/ |
1027 | /*****************************************************************************/ |
… | |
… | |
917 | } |
1099 | } |
918 | |
1100 | |
919 | unsigned int |
1101 | unsigned int |
920 | ev_embeddable_backends (void) |
1102 | ev_embeddable_backends (void) |
921 | { |
1103 | { |
922 | return EVBACKEND_EPOLL |
1104 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
923 | | EVBACKEND_KQUEUE |
1105 | |
924 | | EVBACKEND_PORT; |
1106 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1107 | /* please fix it and tell me how to detect the fix */ |
|
|
1108 | flags &= ~EVBACKEND_EPOLL; |
|
|
1109 | |
|
|
1110 | return flags; |
925 | } |
1111 | } |
926 | |
1112 | |
927 | unsigned int |
1113 | unsigned int |
928 | ev_backend (EV_P) |
1114 | ev_backend (EV_P) |
929 | { |
1115 | { |
… | |
… | |
932 | |
1118 | |
933 | unsigned int |
1119 | unsigned int |
934 | ev_loop_count (EV_P) |
1120 | ev_loop_count (EV_P) |
935 | { |
1121 | { |
936 | return loop_count; |
1122 | return loop_count; |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | void |
|
|
1126 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1127 | { |
|
|
1128 | io_blocktime = interval; |
|
|
1129 | } |
|
|
1130 | |
|
|
1131 | void |
|
|
1132 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1133 | { |
|
|
1134 | timeout_blocktime = interval; |
937 | } |
1135 | } |
938 | |
1136 | |
939 | static void noinline |
1137 | static void noinline |
940 | loop_init (EV_P_ unsigned int flags) |
1138 | loop_init (EV_P_ unsigned int flags) |
941 | { |
1139 | { |
… | |
… | |
947 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1145 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
948 | have_monotonic = 1; |
1146 | have_monotonic = 1; |
949 | } |
1147 | } |
950 | #endif |
1148 | #endif |
951 | |
1149 | |
952 | ev_rt_now = ev_time (); |
1150 | ev_rt_now = ev_time (); |
953 | mn_now = get_clock (); |
1151 | mn_now = get_clock (); |
954 | now_floor = mn_now; |
1152 | now_floor = mn_now; |
955 | rtmn_diff = ev_rt_now - mn_now; |
1153 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1154 | |
|
|
1155 | io_blocktime = 0.; |
|
|
1156 | timeout_blocktime = 0.; |
|
|
1157 | backend = 0; |
|
|
1158 | backend_fd = -1; |
|
|
1159 | gotasync = 0; |
|
|
1160 | #if EV_USE_INOTIFY |
|
|
1161 | fs_fd = -2; |
|
|
1162 | #endif |
956 | |
1163 | |
957 | /* pid check not overridable via env */ |
1164 | /* pid check not overridable via env */ |
958 | #ifndef _WIN32 |
1165 | #ifndef _WIN32 |
959 | if (flags & EVFLAG_FORKCHECK) |
1166 | if (flags & EVFLAG_FORKCHECK) |
960 | curpid = getpid (); |
1167 | curpid = getpid (); |
… | |
… | |
966 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1173 | flags = atoi (getenv ("LIBEV_FLAGS")); |
967 | |
1174 | |
968 | if (!(flags & 0x0000ffffUL)) |
1175 | if (!(flags & 0x0000ffffUL)) |
969 | flags |= ev_recommended_backends (); |
1176 | flags |= ev_recommended_backends (); |
970 | |
1177 | |
971 | backend = 0; |
|
|
972 | backend_fd = -1; |
|
|
973 | #if EV_USE_INOTIFY |
|
|
974 | fs_fd = -2; |
|
|
975 | #endif |
|
|
976 | |
|
|
977 | #if EV_USE_PORT |
1178 | #if EV_USE_PORT |
978 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1179 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
979 | #endif |
1180 | #endif |
980 | #if EV_USE_KQUEUE |
1181 | #if EV_USE_KQUEUE |
981 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1182 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
988 | #endif |
1189 | #endif |
989 | #if EV_USE_SELECT |
1190 | #if EV_USE_SELECT |
990 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1191 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
991 | #endif |
1192 | #endif |
992 | |
1193 | |
993 | ev_init (&sigev, sigcb); |
1194 | ev_init (&pipeev, pipecb); |
994 | ev_set_priority (&sigev, EV_MAXPRI); |
1195 | ev_set_priority (&pipeev, EV_MAXPRI); |
995 | } |
1196 | } |
996 | } |
1197 | } |
997 | |
1198 | |
998 | static void noinline |
1199 | static void noinline |
999 | loop_destroy (EV_P) |
1200 | loop_destroy (EV_P) |
1000 | { |
1201 | { |
1001 | int i; |
1202 | int i; |
|
|
1203 | |
|
|
1204 | if (ev_is_active (&pipeev)) |
|
|
1205 | { |
|
|
1206 | ev_ref (EV_A); /* signal watcher */ |
|
|
1207 | ev_io_stop (EV_A_ &pipeev); |
|
|
1208 | |
|
|
1209 | #if EV_USE_EVENTFD |
|
|
1210 | if (evfd >= 0) |
|
|
1211 | close (evfd); |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | if (evpipe [0] >= 0) |
|
|
1215 | { |
|
|
1216 | close (evpipe [0]); |
|
|
1217 | close (evpipe [1]); |
|
|
1218 | } |
|
|
1219 | } |
1002 | |
1220 | |
1003 | #if EV_USE_INOTIFY |
1221 | #if EV_USE_INOTIFY |
1004 | if (fs_fd >= 0) |
1222 | if (fs_fd >= 0) |
1005 | close (fs_fd); |
1223 | close (fs_fd); |
1006 | #endif |
1224 | #endif |
… | |
… | |
1029 | array_free (pending, [i]); |
1247 | array_free (pending, [i]); |
1030 | #if EV_IDLE_ENABLE |
1248 | #if EV_IDLE_ENABLE |
1031 | array_free (idle, [i]); |
1249 | array_free (idle, [i]); |
1032 | #endif |
1250 | #endif |
1033 | } |
1251 | } |
|
|
1252 | |
|
|
1253 | ev_free (anfds); anfdmax = 0; |
1034 | |
1254 | |
1035 | /* have to use the microsoft-never-gets-it-right macro */ |
1255 | /* have to use the microsoft-never-gets-it-right macro */ |
1036 | array_free (fdchange, EMPTY); |
1256 | array_free (fdchange, EMPTY); |
1037 | array_free (timer, EMPTY); |
1257 | array_free (timer, EMPTY); |
1038 | #if EV_PERIODIC_ENABLE |
1258 | #if EV_PERIODIC_ENABLE |
1039 | array_free (periodic, EMPTY); |
1259 | array_free (periodic, EMPTY); |
1040 | #endif |
1260 | #endif |
|
|
1261 | #if EV_FORK_ENABLE |
|
|
1262 | array_free (fork, EMPTY); |
|
|
1263 | #endif |
1041 | array_free (prepare, EMPTY); |
1264 | array_free (prepare, EMPTY); |
1042 | array_free (check, EMPTY); |
1265 | array_free (check, EMPTY); |
|
|
1266 | #if EV_ASYNC_ENABLE |
|
|
1267 | array_free (async, EMPTY); |
|
|
1268 | #endif |
1043 | |
1269 | |
1044 | backend = 0; |
1270 | backend = 0; |
1045 | } |
1271 | } |
1046 | |
1272 | |
1047 | void inline_size infy_fork (EV_P); |
1273 | void inline_size infy_fork (EV_P); |
… | |
… | |
1060 | #endif |
1286 | #endif |
1061 | #if EV_USE_INOTIFY |
1287 | #if EV_USE_INOTIFY |
1062 | infy_fork (EV_A); |
1288 | infy_fork (EV_A); |
1063 | #endif |
1289 | #endif |
1064 | |
1290 | |
1065 | if (ev_is_active (&sigev)) |
1291 | if (ev_is_active (&pipeev)) |
1066 | { |
1292 | { |
1067 | /* default loop */ |
1293 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1294 | /* while we modify the fd vars */ |
|
|
1295 | gotsig = 1; |
|
|
1296 | #if EV_ASYNC_ENABLE |
|
|
1297 | gotasync = 1; |
|
|
1298 | #endif |
1068 | |
1299 | |
1069 | ev_ref (EV_A); |
1300 | ev_ref (EV_A); |
1070 | ev_io_stop (EV_A_ &sigev); |
1301 | ev_io_stop (EV_A_ &pipeev); |
|
|
1302 | |
|
|
1303 | #if EV_USE_EVENTFD |
|
|
1304 | if (evfd >= 0) |
|
|
1305 | close (evfd); |
|
|
1306 | #endif |
|
|
1307 | |
|
|
1308 | if (evpipe [0] >= 0) |
|
|
1309 | { |
1071 | close (sigpipe [0]); |
1310 | close (evpipe [0]); |
1072 | close (sigpipe [1]); |
1311 | close (evpipe [1]); |
|
|
1312 | } |
1073 | |
1313 | |
1074 | while (pipe (sigpipe)) |
|
|
1075 | syserr ("(libev) error creating pipe"); |
|
|
1076 | |
|
|
1077 | siginit (EV_A); |
1314 | evpipe_init (EV_A); |
|
|
1315 | /* now iterate over everything, in case we missed something */ |
|
|
1316 | pipecb (EV_A_ &pipeev, EV_READ); |
1078 | } |
1317 | } |
1079 | |
1318 | |
1080 | postfork = 0; |
1319 | postfork = 0; |
1081 | } |
1320 | } |
1082 | |
1321 | |
… | |
… | |
1104 | } |
1343 | } |
1105 | |
1344 | |
1106 | void |
1345 | void |
1107 | ev_loop_fork (EV_P) |
1346 | ev_loop_fork (EV_P) |
1108 | { |
1347 | { |
1109 | postfork = 1; |
1348 | postfork = 1; /* must be in line with ev_default_fork */ |
1110 | } |
1349 | } |
1111 | |
1350 | |
1112 | #endif |
1351 | #endif |
1113 | |
1352 | |
1114 | #if EV_MULTIPLICITY |
1353 | #if EV_MULTIPLICITY |
… | |
… | |
1117 | #else |
1356 | #else |
1118 | int |
1357 | int |
1119 | ev_default_loop (unsigned int flags) |
1358 | ev_default_loop (unsigned int flags) |
1120 | #endif |
1359 | #endif |
1121 | { |
1360 | { |
1122 | if (sigpipe [0] == sigpipe [1]) |
|
|
1123 | if (pipe (sigpipe)) |
|
|
1124 | return 0; |
|
|
1125 | |
|
|
1126 | if (!ev_default_loop_ptr) |
1361 | if (!ev_default_loop_ptr) |
1127 | { |
1362 | { |
1128 | #if EV_MULTIPLICITY |
1363 | #if EV_MULTIPLICITY |
1129 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1364 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1130 | #else |
1365 | #else |
… | |
… | |
1133 | |
1368 | |
1134 | loop_init (EV_A_ flags); |
1369 | loop_init (EV_A_ flags); |
1135 | |
1370 | |
1136 | if (ev_backend (EV_A)) |
1371 | if (ev_backend (EV_A)) |
1137 | { |
1372 | { |
1138 | siginit (EV_A); |
|
|
1139 | |
|
|
1140 | #ifndef _WIN32 |
1373 | #ifndef _WIN32 |
1141 | ev_signal_init (&childev, childcb, SIGCHLD); |
1374 | ev_signal_init (&childev, childcb, SIGCHLD); |
1142 | ev_set_priority (&childev, EV_MAXPRI); |
1375 | ev_set_priority (&childev, EV_MAXPRI); |
1143 | ev_signal_start (EV_A_ &childev); |
1376 | ev_signal_start (EV_A_ &childev); |
1144 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1377 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1161 | #ifndef _WIN32 |
1394 | #ifndef _WIN32 |
1162 | ev_ref (EV_A); /* child watcher */ |
1395 | ev_ref (EV_A); /* child watcher */ |
1163 | ev_signal_stop (EV_A_ &childev); |
1396 | ev_signal_stop (EV_A_ &childev); |
1164 | #endif |
1397 | #endif |
1165 | |
1398 | |
1166 | ev_ref (EV_A); /* signal watcher */ |
|
|
1167 | ev_io_stop (EV_A_ &sigev); |
|
|
1168 | |
|
|
1169 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1170 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1171 | |
|
|
1172 | loop_destroy (EV_A); |
1399 | loop_destroy (EV_A); |
1173 | } |
1400 | } |
1174 | |
1401 | |
1175 | void |
1402 | void |
1176 | ev_default_fork (void) |
1403 | ev_default_fork (void) |
… | |
… | |
1178 | #if EV_MULTIPLICITY |
1405 | #if EV_MULTIPLICITY |
1179 | struct ev_loop *loop = ev_default_loop_ptr; |
1406 | struct ev_loop *loop = ev_default_loop_ptr; |
1180 | #endif |
1407 | #endif |
1181 | |
1408 | |
1182 | if (backend) |
1409 | if (backend) |
1183 | postfork = 1; |
1410 | postfork = 1; /* must be in line with ev_loop_fork */ |
1184 | } |
1411 | } |
1185 | |
1412 | |
1186 | /*****************************************************************************/ |
1413 | /*****************************************************************************/ |
1187 | |
1414 | |
1188 | void |
1415 | void |
… | |
… | |
1397 | static int loop_done; |
1624 | static int loop_done; |
1398 | |
1625 | |
1399 | void |
1626 | void |
1400 | ev_loop (EV_P_ int flags) |
1627 | ev_loop (EV_P_ int flags) |
1401 | { |
1628 | { |
1402 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1629 | loop_done = EVUNLOOP_CANCEL; |
1403 | ? EVUNLOOP_ONE |
|
|
1404 | : EVUNLOOP_CANCEL; |
|
|
1405 | |
1630 | |
1406 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1631 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1407 | |
1632 | |
1408 | do |
1633 | do |
1409 | { |
1634 | { |
… | |
… | |
1443 | /* update fd-related kernel structures */ |
1668 | /* update fd-related kernel structures */ |
1444 | fd_reify (EV_A); |
1669 | fd_reify (EV_A); |
1445 | |
1670 | |
1446 | /* calculate blocking time */ |
1671 | /* calculate blocking time */ |
1447 | { |
1672 | { |
1448 | ev_tstamp block; |
1673 | ev_tstamp waittime = 0.; |
|
|
1674 | ev_tstamp sleeptime = 0.; |
1449 | |
1675 | |
1450 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1676 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1451 | block = 0.; /* do not block at all */ |
|
|
1452 | else |
|
|
1453 | { |
1677 | { |
1454 | /* update time to cancel out callback processing overhead */ |
1678 | /* update time to cancel out callback processing overhead */ |
1455 | time_update (EV_A_ 1e100); |
1679 | time_update (EV_A_ 1e100); |
1456 | |
1680 | |
1457 | block = MAX_BLOCKTIME; |
1681 | waittime = MAX_BLOCKTIME; |
1458 | |
1682 | |
1459 | if (timercnt) |
1683 | if (timercnt) |
1460 | { |
1684 | { |
1461 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1685 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1462 | if (block > to) block = to; |
1686 | if (waittime > to) waittime = to; |
1463 | } |
1687 | } |
1464 | |
1688 | |
1465 | #if EV_PERIODIC_ENABLE |
1689 | #if EV_PERIODIC_ENABLE |
1466 | if (periodiccnt) |
1690 | if (periodiccnt) |
1467 | { |
1691 | { |
1468 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1692 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1469 | if (block > to) block = to; |
1693 | if (waittime > to) waittime = to; |
1470 | } |
1694 | } |
1471 | #endif |
1695 | #endif |
1472 | |
1696 | |
1473 | if (expect_false (block < 0.)) block = 0.; |
1697 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1698 | waittime = timeout_blocktime; |
|
|
1699 | |
|
|
1700 | sleeptime = waittime - backend_fudge; |
|
|
1701 | |
|
|
1702 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1703 | sleeptime = io_blocktime; |
|
|
1704 | |
|
|
1705 | if (sleeptime) |
|
|
1706 | { |
|
|
1707 | ev_sleep (sleeptime); |
|
|
1708 | waittime -= sleeptime; |
|
|
1709 | } |
1474 | } |
1710 | } |
1475 | |
1711 | |
1476 | ++loop_count; |
1712 | ++loop_count; |
1477 | backend_poll (EV_A_ block); |
1713 | backend_poll (EV_A_ waittime); |
1478 | |
1714 | |
1479 | /* update ev_rt_now, do magic */ |
1715 | /* update ev_rt_now, do magic */ |
1480 | time_update (EV_A_ block); |
1716 | time_update (EV_A_ waittime + sleeptime); |
1481 | } |
1717 | } |
1482 | |
1718 | |
1483 | /* queue pending timers and reschedule them */ |
1719 | /* queue pending timers and reschedule them */ |
1484 | timers_reify (EV_A); /* relative timers called last */ |
1720 | timers_reify (EV_A); /* relative timers called last */ |
1485 | #if EV_PERIODIC_ENABLE |
1721 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1494 | /* queue check watchers, to be executed first */ |
1730 | /* queue check watchers, to be executed first */ |
1495 | if (expect_false (checkcnt)) |
1731 | if (expect_false (checkcnt)) |
1496 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1732 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1497 | |
1733 | |
1498 | call_pending (EV_A); |
1734 | call_pending (EV_A); |
1499 | |
|
|
1500 | } |
1735 | } |
1501 | while (expect_true (activecnt && !loop_done)); |
1736 | while (expect_true ( |
|
|
1737 | activecnt |
|
|
1738 | && !loop_done |
|
|
1739 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1740 | )); |
1502 | |
1741 | |
1503 | if (loop_done == EVUNLOOP_ONE) |
1742 | if (loop_done == EVUNLOOP_ONE) |
1504 | loop_done = EVUNLOOP_CANCEL; |
1743 | loop_done = EVUNLOOP_CANCEL; |
1505 | } |
1744 | } |
1506 | |
1745 | |
… | |
… | |
1599 | |
1838 | |
1600 | ev_start (EV_A_ (W)w, 1); |
1839 | ev_start (EV_A_ (W)w, 1); |
1601 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1840 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1602 | wlist_add (&anfds[fd].head, (WL)w); |
1841 | wlist_add (&anfds[fd].head, (WL)w); |
1603 | |
1842 | |
1604 | fd_change (EV_A_ fd); |
1843 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1844 | w->events &= ~EV_IOFDSET; |
1605 | } |
1845 | } |
1606 | |
1846 | |
1607 | void noinline |
1847 | void noinline |
1608 | ev_io_stop (EV_P_ ev_io *w) |
1848 | ev_io_stop (EV_P_ ev_io *w) |
1609 | { |
1849 | { |
… | |
… | |
1614 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1854 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1615 | |
1855 | |
1616 | wlist_del (&anfds[w->fd].head, (WL)w); |
1856 | wlist_del (&anfds[w->fd].head, (WL)w); |
1617 | ev_stop (EV_A_ (W)w); |
1857 | ev_stop (EV_A_ (W)w); |
1618 | |
1858 | |
1619 | fd_change (EV_A_ w->fd); |
1859 | fd_change (EV_A_ w->fd, 1); |
1620 | } |
1860 | } |
1621 | |
1861 | |
1622 | void noinline |
1862 | void noinline |
1623 | ev_timer_start (EV_P_ ev_timer *w) |
1863 | ev_timer_start (EV_P_ ev_timer *w) |
1624 | { |
1864 | { |
… | |
… | |
1751 | if (expect_false (ev_is_active (w))) |
1991 | if (expect_false (ev_is_active (w))) |
1752 | return; |
1992 | return; |
1753 | |
1993 | |
1754 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1994 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1755 | |
1995 | |
|
|
1996 | evpipe_init (EV_A); |
|
|
1997 | |
1756 | { |
1998 | { |
1757 | #ifndef _WIN32 |
1999 | #ifndef _WIN32 |
1758 | sigset_t full, prev; |
2000 | sigset_t full, prev; |
1759 | sigfillset (&full); |
2001 | sigfillset (&full); |
1760 | sigprocmask (SIG_SETMASK, &full, &prev); |
2002 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1771 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2013 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1772 | |
2014 | |
1773 | if (!((WL)w)->next) |
2015 | if (!((WL)w)->next) |
1774 | { |
2016 | { |
1775 | #if _WIN32 |
2017 | #if _WIN32 |
1776 | signal (w->signum, sighandler); |
2018 | signal (w->signum, ev_sighandler); |
1777 | #else |
2019 | #else |
1778 | struct sigaction sa; |
2020 | struct sigaction sa; |
1779 | sa.sa_handler = sighandler; |
2021 | sa.sa_handler = ev_sighandler; |
1780 | sigfillset (&sa.sa_mask); |
2022 | sigfillset (&sa.sa_mask); |
1781 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2023 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1782 | sigaction (w->signum, &sa, 0); |
2024 | sigaction (w->signum, &sa, 0); |
1783 | #endif |
2025 | #endif |
1784 | } |
2026 | } |
… | |
… | |
2168 | |
2410 | |
2169 | #if EV_EMBED_ENABLE |
2411 | #if EV_EMBED_ENABLE |
2170 | void noinline |
2412 | void noinline |
2171 | ev_embed_sweep (EV_P_ ev_embed *w) |
2413 | ev_embed_sweep (EV_P_ ev_embed *w) |
2172 | { |
2414 | { |
2173 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
2415 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2174 | } |
2416 | } |
2175 | |
2417 | |
2176 | static void |
2418 | static void |
2177 | embed_cb (EV_P_ ev_io *io, int revents) |
2419 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2178 | { |
2420 | { |
2179 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2421 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2180 | |
2422 | |
2181 | if (ev_cb (w)) |
2423 | if (ev_cb (w)) |
2182 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2424 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2183 | else |
2425 | else |
2184 | ev_embed_sweep (loop, w); |
2426 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2185 | } |
2427 | } |
|
|
2428 | |
|
|
2429 | static void |
|
|
2430 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2431 | { |
|
|
2432 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2433 | |
|
|
2434 | { |
|
|
2435 | struct ev_loop *loop = w->other; |
|
|
2436 | |
|
|
2437 | while (fdchangecnt) |
|
|
2438 | { |
|
|
2439 | fd_reify (EV_A); |
|
|
2440 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2441 | } |
|
|
2442 | } |
|
|
2443 | } |
|
|
2444 | |
|
|
2445 | #if 0 |
|
|
2446 | static void |
|
|
2447 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2448 | { |
|
|
2449 | ev_idle_stop (EV_A_ idle); |
|
|
2450 | } |
|
|
2451 | #endif |
2186 | |
2452 | |
2187 | void |
2453 | void |
2188 | ev_embed_start (EV_P_ ev_embed *w) |
2454 | ev_embed_start (EV_P_ ev_embed *w) |
2189 | { |
2455 | { |
2190 | if (expect_false (ev_is_active (w))) |
2456 | if (expect_false (ev_is_active (w))) |
2191 | return; |
2457 | return; |
2192 | |
2458 | |
2193 | { |
2459 | { |
2194 | struct ev_loop *loop = w->loop; |
2460 | struct ev_loop *loop = w->other; |
2195 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2461 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2196 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
2462 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2197 | } |
2463 | } |
2198 | |
2464 | |
2199 | ev_set_priority (&w->io, ev_priority (w)); |
2465 | ev_set_priority (&w->io, ev_priority (w)); |
2200 | ev_io_start (EV_A_ &w->io); |
2466 | ev_io_start (EV_A_ &w->io); |
2201 | |
2467 | |
|
|
2468 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2469 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2470 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2471 | |
|
|
2472 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2473 | |
2202 | ev_start (EV_A_ (W)w, 1); |
2474 | ev_start (EV_A_ (W)w, 1); |
2203 | } |
2475 | } |
2204 | |
2476 | |
2205 | void |
2477 | void |
2206 | ev_embed_stop (EV_P_ ev_embed *w) |
2478 | ev_embed_stop (EV_P_ ev_embed *w) |
… | |
… | |
2208 | clear_pending (EV_A_ (W)w); |
2480 | clear_pending (EV_A_ (W)w); |
2209 | if (expect_false (!ev_is_active (w))) |
2481 | if (expect_false (!ev_is_active (w))) |
2210 | return; |
2482 | return; |
2211 | |
2483 | |
2212 | ev_io_stop (EV_A_ &w->io); |
2484 | ev_io_stop (EV_A_ &w->io); |
|
|
2485 | ev_prepare_stop (EV_A_ &w->prepare); |
2213 | |
2486 | |
2214 | ev_stop (EV_A_ (W)w); |
2487 | ev_stop (EV_A_ (W)w); |
2215 | } |
2488 | } |
2216 | #endif |
2489 | #endif |
2217 | |
2490 | |
… | |
… | |
2242 | |
2515 | |
2243 | ev_stop (EV_A_ (W)w); |
2516 | ev_stop (EV_A_ (W)w); |
2244 | } |
2517 | } |
2245 | #endif |
2518 | #endif |
2246 | |
2519 | |
|
|
2520 | #if EV_ASYNC_ENABLE |
|
|
2521 | void |
|
|
2522 | ev_async_start (EV_P_ ev_async *w) |
|
|
2523 | { |
|
|
2524 | if (expect_false (ev_is_active (w))) |
|
|
2525 | return; |
|
|
2526 | |
|
|
2527 | evpipe_init (EV_A); |
|
|
2528 | |
|
|
2529 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2530 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2531 | asyncs [asynccnt - 1] = w; |
|
|
2532 | } |
|
|
2533 | |
|
|
2534 | void |
|
|
2535 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2536 | { |
|
|
2537 | clear_pending (EV_A_ (W)w); |
|
|
2538 | if (expect_false (!ev_is_active (w))) |
|
|
2539 | return; |
|
|
2540 | |
|
|
2541 | { |
|
|
2542 | int active = ((W)w)->active; |
|
|
2543 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2544 | ((W)asyncs [active - 1])->active = active; |
|
|
2545 | } |
|
|
2546 | |
|
|
2547 | ev_stop (EV_A_ (W)w); |
|
|
2548 | } |
|
|
2549 | |
|
|
2550 | void |
|
|
2551 | ev_async_send (EV_P_ ev_async *w) |
|
|
2552 | { |
|
|
2553 | w->sent = 1; |
|
|
2554 | evpipe_write (EV_A_ &gotasync); |
|
|
2555 | } |
|
|
2556 | #endif |
|
|
2557 | |
2247 | /*****************************************************************************/ |
2558 | /*****************************************************************************/ |
2248 | |
2559 | |
2249 | struct ev_once |
2560 | struct ev_once |
2250 | { |
2561 | { |
2251 | ev_io io; |
2562 | ev_io io; |
… | |
… | |
2306 | ev_timer_set (&once->to, timeout, 0.); |
2617 | ev_timer_set (&once->to, timeout, 0.); |
2307 | ev_timer_start (EV_A_ &once->to); |
2618 | ev_timer_start (EV_A_ &once->to); |
2308 | } |
2619 | } |
2309 | } |
2620 | } |
2310 | |
2621 | |
|
|
2622 | #if EV_MULTIPLICITY |
|
|
2623 | #include "ev_wrap.h" |
|
|
2624 | #endif |
|
|
2625 | |
2311 | #ifdef __cplusplus |
2626 | #ifdef __cplusplus |
2312 | } |
2627 | } |
2313 | #endif |
2628 | #endif |
2314 | |
2629 | |