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 | |
… | |
… | |
292 | perror (msg); |
360 | perror (msg); |
293 | abort (); |
361 | abort (); |
294 | } |
362 | } |
295 | } |
363 | } |
296 | |
364 | |
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365 | static void * |
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366 | ev_realloc_emul (void *ptr, long size) |
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367 | { |
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368 | /* some systems, notably openbsd and darwin, fail to properly |
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369 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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370 | * the single unix specification, so work around them here. |
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371 | */ |
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372 | |
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373 | if (size) |
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374 | return realloc (ptr, size); |
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375 | |
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376 | free (ptr); |
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377 | return 0; |
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378 | } |
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379 | |
297 | static void *(*alloc)(void *ptr, long size); |
380 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
298 | |
381 | |
299 | void |
382 | void |
300 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
383 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
301 | { |
384 | { |
302 | alloc = cb; |
385 | alloc = cb; |
303 | } |
386 | } |
304 | |
387 | |
305 | inline_speed void * |
388 | inline_speed void * |
306 | ev_realloc (void *ptr, long size) |
389 | ev_realloc (void *ptr, long size) |
307 | { |
390 | { |
308 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
391 | ptr = alloc (ptr, size); |
309 | |
392 | |
310 | if (!ptr && size) |
393 | if (!ptr && size) |
311 | { |
394 | { |
312 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
395 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
313 | abort (); |
396 | abort (); |
… | |
… | |
407 | { |
490 | { |
408 | return ev_rt_now; |
491 | return ev_rt_now; |
409 | } |
492 | } |
410 | #endif |
493 | #endif |
411 | |
494 | |
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495 | void |
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496 | ev_sleep (ev_tstamp delay) |
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497 | { |
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498 | if (delay > 0.) |
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499 | { |
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500 | #if EV_USE_NANOSLEEP |
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501 | struct timespec ts; |
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502 | |
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503 | ts.tv_sec = (time_t)delay; |
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504 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
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505 | |
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506 | nanosleep (&ts, 0); |
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507 | #elif defined(_WIN32) |
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508 | Sleep ((unsigned long)(delay * 1e3)); |
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509 | #else |
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510 | struct timeval tv; |
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511 | |
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512 | tv.tv_sec = (time_t)delay; |
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513 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
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514 | |
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515 | select (0, 0, 0, 0, &tv); |
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516 | #endif |
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517 | } |
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518 | } |
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519 | |
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520 | /*****************************************************************************/ |
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521 | |
412 | int inline_size |
522 | int inline_size |
413 | array_nextsize (int elem, int cur, int cnt) |
523 | array_nextsize (int elem, int cur, int cnt) |
414 | { |
524 | { |
415 | int ncur = cur + 1; |
525 | int ncur = cur + 1; |
416 | |
526 | |
… | |
… | |
533 | { |
643 | { |
534 | int fd = fdchanges [i]; |
644 | int fd = fdchanges [i]; |
535 | ANFD *anfd = anfds + fd; |
645 | ANFD *anfd = anfds + fd; |
536 | ev_io *w; |
646 | ev_io *w; |
537 | |
647 | |
538 | int events = 0; |
648 | unsigned char events = 0; |
539 | |
649 | |
540 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
650 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
541 | events |= w->events; |
651 | events |= (unsigned char)w->events; |
542 | |
652 | |
543 | #if EV_SELECT_IS_WINSOCKET |
653 | #if EV_SELECT_IS_WINSOCKET |
544 | if (events) |
654 | if (events) |
545 | { |
655 | { |
546 | unsigned long argp; |
656 | unsigned long argp; |
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657 | #ifdef EV_FD_TO_WIN32_HANDLE |
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658 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
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659 | #else |
547 | anfd->handle = _get_osfhandle (fd); |
660 | anfd->handle = _get_osfhandle (fd); |
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661 | #endif |
548 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
662 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
549 | } |
663 | } |
550 | #endif |
664 | #endif |
551 | |
665 | |
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666 | { |
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667 | unsigned char o_events = anfd->events; |
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668 | unsigned char o_reify = anfd->reify; |
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669 | |
552 | anfd->reify = 0; |
670 | 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; |
671 | anfd->events = events; |
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672 | |
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673 | if (o_events != events || o_reify & EV_IOFDSET) |
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674 | backend_modify (EV_A_ fd, o_events, events); |
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675 | } |
556 | } |
676 | } |
557 | |
677 | |
558 | fdchangecnt = 0; |
678 | fdchangecnt = 0; |
559 | } |
679 | } |
560 | |
680 | |
561 | void inline_size |
681 | void inline_size |
562 | fd_change (EV_P_ int fd, int flags) |
682 | fd_change (EV_P_ int fd, int flags) |
563 | { |
683 | { |
564 | unsigned char reify = anfds [fd].reify; |
684 | unsigned char reify = anfds [fd].reify; |
565 | anfds [fd].reify |= flags | 1; |
685 | anfds [fd].reify |= flags; |
566 | |
686 | |
567 | if (expect_true (!reify)) |
687 | if (expect_true (!reify)) |
568 | { |
688 | { |
569 | ++fdchangecnt; |
689 | ++fdchangecnt; |
570 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
690 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
… | |
… | |
628 | |
748 | |
629 | for (fd = 0; fd < anfdmax; ++fd) |
749 | for (fd = 0; fd < anfdmax; ++fd) |
630 | if (anfds [fd].events) |
750 | if (anfds [fd].events) |
631 | { |
751 | { |
632 | anfds [fd].events = 0; |
752 | anfds [fd].events = 0; |
633 | fd_change (EV_A_ fd, EV_IOFDSET); |
753 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
634 | } |
754 | } |
635 | } |
755 | } |
636 | |
756 | |
637 | /*****************************************************************************/ |
757 | /*****************************************************************************/ |
638 | |
758 | |
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759 | /* towards the root */ |
639 | void inline_speed |
760 | void inline_speed |
640 | upheap (WT *heap, int k) |
761 | upheap (WT *heap, int k) |
641 | { |
762 | { |
642 | WT w = heap [k]; |
763 | WT w = heap [k]; |
643 | |
764 | |
… | |
… | |
655 | |
776 | |
656 | heap [k] = w; |
777 | heap [k] = w; |
657 | ((W)heap [k])->active = k + 1; |
778 | ((W)heap [k])->active = k + 1; |
658 | } |
779 | } |
659 | |
780 | |
|
|
781 | /* away from the root */ |
660 | void inline_speed |
782 | void inline_speed |
661 | downheap (WT *heap, int N, int k) |
783 | downheap (WT *heap, int N, int k) |
662 | { |
784 | { |
663 | WT w = heap [k]; |
785 | WT w = heap [k]; |
664 | |
786 | |
… | |
… | |
695 | /*****************************************************************************/ |
817 | /*****************************************************************************/ |
696 | |
818 | |
697 | typedef struct |
819 | typedef struct |
698 | { |
820 | { |
699 | WL head; |
821 | WL head; |
700 | sig_atomic_t volatile gotsig; |
822 | EV_ATOMIC_T gotsig; |
701 | } ANSIG; |
823 | } ANSIG; |
702 | |
824 | |
703 | static ANSIG *signals; |
825 | static ANSIG *signals; |
704 | static int signalmax; |
826 | static int signalmax; |
705 | |
827 | |
706 | static int sigpipe [2]; |
828 | static EV_ATOMIC_T gotsig; |
707 | static sig_atomic_t volatile gotsig; |
|
|
708 | static ev_io sigev; |
|
|
709 | |
829 | |
710 | void inline_size |
830 | void inline_size |
711 | signals_init (ANSIG *base, int count) |
831 | signals_init (ANSIG *base, int count) |
712 | { |
832 | { |
713 | while (count--) |
833 | while (count--) |
… | |
… | |
717 | |
837 | |
718 | ++base; |
838 | ++base; |
719 | } |
839 | } |
720 | } |
840 | } |
721 | |
841 | |
722 | static void |
842 | /*****************************************************************************/ |
723 | sighandler (int signum) |
|
|
724 | { |
|
|
725 | #if _WIN32 |
|
|
726 | signal (signum, sighandler); |
|
|
727 | #endif |
|
|
728 | |
|
|
729 | signals [signum - 1].gotsig = 1; |
|
|
730 | |
|
|
731 | if (!gotsig) |
|
|
732 | { |
|
|
733 | int old_errno = errno; |
|
|
734 | gotsig = 1; |
|
|
735 | write (sigpipe [1], &signum, 1); |
|
|
736 | errno = old_errno; |
|
|
737 | } |
|
|
738 | } |
|
|
739 | |
|
|
740 | void noinline |
|
|
741 | ev_feed_signal_event (EV_P_ int signum) |
|
|
742 | { |
|
|
743 | WL w; |
|
|
744 | |
|
|
745 | #if EV_MULTIPLICITY |
|
|
746 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
747 | #endif |
|
|
748 | |
|
|
749 | --signum; |
|
|
750 | |
|
|
751 | if (signum < 0 || signum >= signalmax) |
|
|
752 | return; |
|
|
753 | |
|
|
754 | signals [signum].gotsig = 0; |
|
|
755 | |
|
|
756 | for (w = signals [signum].head; w; w = w->next) |
|
|
757 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
758 | } |
|
|
759 | |
|
|
760 | static void |
|
|
761 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
762 | { |
|
|
763 | int signum; |
|
|
764 | |
|
|
765 | read (sigpipe [0], &revents, 1); |
|
|
766 | gotsig = 0; |
|
|
767 | |
|
|
768 | for (signum = signalmax; signum--; ) |
|
|
769 | if (signals [signum].gotsig) |
|
|
770 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
771 | } |
|
|
772 | |
843 | |
773 | void inline_speed |
844 | void inline_speed |
774 | fd_intern (int fd) |
845 | fd_intern (int fd) |
775 | { |
846 | { |
776 | #ifdef _WIN32 |
847 | #ifdef _WIN32 |
… | |
… | |
781 | fcntl (fd, F_SETFL, O_NONBLOCK); |
852 | fcntl (fd, F_SETFL, O_NONBLOCK); |
782 | #endif |
853 | #endif |
783 | } |
854 | } |
784 | |
855 | |
785 | static void noinline |
856 | static void noinline |
786 | siginit (EV_P) |
857 | evpipe_init (EV_P) |
787 | { |
858 | { |
|
|
859 | if (!ev_is_active (&pipeev)) |
|
|
860 | { |
|
|
861 | #if EV_USE_EVENTFD |
|
|
862 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
863 | { |
|
|
864 | evpipe [0] = -1; |
|
|
865 | fd_intern (evfd); |
|
|
866 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
867 | } |
|
|
868 | else |
|
|
869 | #endif |
|
|
870 | { |
|
|
871 | while (pipe (evpipe)) |
|
|
872 | syserr ("(libev) error creating signal/async pipe"); |
|
|
873 | |
788 | fd_intern (sigpipe [0]); |
874 | fd_intern (evpipe [0]); |
789 | fd_intern (sigpipe [1]); |
875 | fd_intern (evpipe [1]); |
|
|
876 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
877 | } |
790 | |
878 | |
791 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
792 | ev_io_start (EV_A_ &sigev); |
879 | ev_io_start (EV_A_ &pipeev); |
793 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
880 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
881 | } |
|
|
882 | } |
|
|
883 | |
|
|
884 | void inline_size |
|
|
885 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
886 | { |
|
|
887 | if (!*flag) |
|
|
888 | { |
|
|
889 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
890 | |
|
|
891 | *flag = 1; |
|
|
892 | |
|
|
893 | #if EV_USE_EVENTFD |
|
|
894 | if (evfd >= 0) |
|
|
895 | { |
|
|
896 | uint64_t counter = 1; |
|
|
897 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
898 | } |
|
|
899 | else |
|
|
900 | #endif |
|
|
901 | write (evpipe [1], &old_errno, 1); |
|
|
902 | |
|
|
903 | errno = old_errno; |
|
|
904 | } |
|
|
905 | } |
|
|
906 | |
|
|
907 | static void |
|
|
908 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
909 | { |
|
|
910 | #if EV_USE_EVENTFD |
|
|
911 | if (evfd >= 0) |
|
|
912 | { |
|
|
913 | uint64_t counter = 1; |
|
|
914 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
915 | } |
|
|
916 | else |
|
|
917 | #endif |
|
|
918 | { |
|
|
919 | char dummy; |
|
|
920 | read (evpipe [0], &dummy, 1); |
|
|
921 | } |
|
|
922 | |
|
|
923 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
924 | { |
|
|
925 | int signum; |
|
|
926 | gotsig = 0; |
|
|
927 | |
|
|
928 | for (signum = signalmax; signum--; ) |
|
|
929 | if (signals [signum].gotsig) |
|
|
930 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
931 | } |
|
|
932 | |
|
|
933 | #if EV_ASYNC_ENABLE |
|
|
934 | if (gotasync) |
|
|
935 | { |
|
|
936 | int i; |
|
|
937 | gotasync = 0; |
|
|
938 | |
|
|
939 | for (i = asynccnt; i--; ) |
|
|
940 | if (asyncs [i]->sent) |
|
|
941 | { |
|
|
942 | asyncs [i]->sent = 0; |
|
|
943 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
944 | } |
|
|
945 | } |
|
|
946 | #endif |
794 | } |
947 | } |
795 | |
948 | |
796 | /*****************************************************************************/ |
949 | /*****************************************************************************/ |
797 | |
950 | |
|
|
951 | static void |
|
|
952 | ev_sighandler (int signum) |
|
|
953 | { |
|
|
954 | #if EV_MULTIPLICITY |
|
|
955 | struct ev_loop *loop = &default_loop_struct; |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | #if _WIN32 |
|
|
959 | signal (signum, ev_sighandler); |
|
|
960 | #endif |
|
|
961 | |
|
|
962 | signals [signum - 1].gotsig = 1; |
|
|
963 | evpipe_write (EV_A_ &gotsig); |
|
|
964 | } |
|
|
965 | |
|
|
966 | void noinline |
|
|
967 | ev_feed_signal_event (EV_P_ int signum) |
|
|
968 | { |
|
|
969 | WL w; |
|
|
970 | |
|
|
971 | #if EV_MULTIPLICITY |
|
|
972 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
973 | #endif |
|
|
974 | |
|
|
975 | --signum; |
|
|
976 | |
|
|
977 | if (signum < 0 || signum >= signalmax) |
|
|
978 | return; |
|
|
979 | |
|
|
980 | signals [signum].gotsig = 0; |
|
|
981 | |
|
|
982 | for (w = signals [signum].head; w; w = w->next) |
|
|
983 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
984 | } |
|
|
985 | |
|
|
986 | /*****************************************************************************/ |
|
|
987 | |
798 | static WL childs [EV_PID_HASHSIZE]; |
988 | static WL childs [EV_PID_HASHSIZE]; |
799 | |
989 | |
800 | #ifndef _WIN32 |
990 | #ifndef _WIN32 |
801 | |
991 | |
802 | static ev_signal childev; |
992 | static ev_signal childev; |
803 | |
993 | |
|
|
994 | #ifndef WIFCONTINUED |
|
|
995 | # define WIFCONTINUED(status) 0 |
|
|
996 | #endif |
|
|
997 | |
804 | void inline_speed |
998 | void inline_speed |
805 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
999 | child_reap (EV_P_ int chain, int pid, int status) |
806 | { |
1000 | { |
807 | ev_child *w; |
1001 | ev_child *w; |
|
|
1002 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
808 | |
1003 | |
809 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1004 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1005 | { |
810 | if (w->pid == pid || !w->pid) |
1006 | if ((w->pid == pid || !w->pid) |
|
|
1007 | && (!traced || (w->flags & 1))) |
811 | { |
1008 | { |
812 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
1009 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
813 | w->rpid = pid; |
1010 | w->rpid = pid; |
814 | w->rstatus = status; |
1011 | w->rstatus = status; |
815 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
1012 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
816 | } |
1013 | } |
|
|
1014 | } |
817 | } |
1015 | } |
818 | |
1016 | |
819 | #ifndef WCONTINUED |
1017 | #ifndef WCONTINUED |
820 | # define WCONTINUED 0 |
1018 | # define WCONTINUED 0 |
821 | #endif |
1019 | #endif |
… | |
… | |
830 | if (!WCONTINUED |
1028 | if (!WCONTINUED |
831 | || errno != EINVAL |
1029 | || errno != EINVAL |
832 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1030 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
833 | return; |
1031 | return; |
834 | |
1032 | |
835 | /* make sure we are called again until all childs have been reaped */ |
1033 | /* make sure we are called again until all children have been reaped */ |
836 | /* we need to do it this way so that the callback gets called before we continue */ |
1034 | /* we need to do it this way so that the callback gets called before we continue */ |
837 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1035 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
838 | |
1036 | |
839 | child_reap (EV_A_ sw, pid, pid, status); |
1037 | child_reap (EV_A_ pid, pid, status); |
840 | if (EV_PID_HASHSIZE > 1) |
1038 | if (EV_PID_HASHSIZE > 1) |
841 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1039 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
842 | } |
1040 | } |
843 | |
1041 | |
844 | #endif |
1042 | #endif |
845 | |
1043 | |
846 | /*****************************************************************************/ |
1044 | /*****************************************************************************/ |
… | |
… | |
918 | } |
1116 | } |
919 | |
1117 | |
920 | unsigned int |
1118 | unsigned int |
921 | ev_embeddable_backends (void) |
1119 | ev_embeddable_backends (void) |
922 | { |
1120 | { |
923 | return EVBACKEND_EPOLL |
1121 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
924 | | EVBACKEND_KQUEUE |
1122 | |
925 | | EVBACKEND_PORT; |
1123 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1124 | /* please fix it and tell me how to detect the fix */ |
|
|
1125 | flags &= ~EVBACKEND_EPOLL; |
|
|
1126 | |
|
|
1127 | return flags; |
926 | } |
1128 | } |
927 | |
1129 | |
928 | unsigned int |
1130 | unsigned int |
929 | ev_backend (EV_P) |
1131 | ev_backend (EV_P) |
930 | { |
1132 | { |
… | |
… | |
933 | |
1135 | |
934 | unsigned int |
1136 | unsigned int |
935 | ev_loop_count (EV_P) |
1137 | ev_loop_count (EV_P) |
936 | { |
1138 | { |
937 | return loop_count; |
1139 | return loop_count; |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | void |
|
|
1143 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1144 | { |
|
|
1145 | io_blocktime = interval; |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | void |
|
|
1149 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1150 | { |
|
|
1151 | timeout_blocktime = interval; |
938 | } |
1152 | } |
939 | |
1153 | |
940 | static void noinline |
1154 | static void noinline |
941 | loop_init (EV_P_ unsigned int flags) |
1155 | loop_init (EV_P_ unsigned int flags) |
942 | { |
1156 | { |
… | |
… | |
948 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1162 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
949 | have_monotonic = 1; |
1163 | have_monotonic = 1; |
950 | } |
1164 | } |
951 | #endif |
1165 | #endif |
952 | |
1166 | |
953 | ev_rt_now = ev_time (); |
1167 | ev_rt_now = ev_time (); |
954 | mn_now = get_clock (); |
1168 | mn_now = get_clock (); |
955 | now_floor = mn_now; |
1169 | now_floor = mn_now; |
956 | rtmn_diff = ev_rt_now - mn_now; |
1170 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1171 | |
|
|
1172 | io_blocktime = 0.; |
|
|
1173 | timeout_blocktime = 0.; |
|
|
1174 | backend = 0; |
|
|
1175 | backend_fd = -1; |
|
|
1176 | gotasync = 0; |
|
|
1177 | #if EV_USE_INOTIFY |
|
|
1178 | fs_fd = -2; |
|
|
1179 | #endif |
957 | |
1180 | |
958 | /* pid check not overridable via env */ |
1181 | /* pid check not overridable via env */ |
959 | #ifndef _WIN32 |
1182 | #ifndef _WIN32 |
960 | if (flags & EVFLAG_FORKCHECK) |
1183 | if (flags & EVFLAG_FORKCHECK) |
961 | curpid = getpid (); |
1184 | curpid = getpid (); |
… | |
… | |
964 | if (!(flags & EVFLAG_NOENV) |
1187 | if (!(flags & EVFLAG_NOENV) |
965 | && !enable_secure () |
1188 | && !enable_secure () |
966 | && getenv ("LIBEV_FLAGS")) |
1189 | && getenv ("LIBEV_FLAGS")) |
967 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1190 | flags = atoi (getenv ("LIBEV_FLAGS")); |
968 | |
1191 | |
969 | if (!(flags & 0x0000ffffUL)) |
1192 | if (!(flags & 0x0000ffffU)) |
970 | flags |= ev_recommended_backends (); |
1193 | flags |= ev_recommended_backends (); |
971 | |
|
|
972 | backend = 0; |
|
|
973 | backend_fd = -1; |
|
|
974 | #if EV_USE_INOTIFY |
|
|
975 | fs_fd = -2; |
|
|
976 | #endif |
|
|
977 | |
1194 | |
978 | #if EV_USE_PORT |
1195 | #if EV_USE_PORT |
979 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1196 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
980 | #endif |
1197 | #endif |
981 | #if EV_USE_KQUEUE |
1198 | #if EV_USE_KQUEUE |
… | |
… | |
989 | #endif |
1206 | #endif |
990 | #if EV_USE_SELECT |
1207 | #if EV_USE_SELECT |
991 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1208 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
992 | #endif |
1209 | #endif |
993 | |
1210 | |
994 | ev_init (&sigev, sigcb); |
1211 | ev_init (&pipeev, pipecb); |
995 | ev_set_priority (&sigev, EV_MAXPRI); |
1212 | ev_set_priority (&pipeev, EV_MAXPRI); |
996 | } |
1213 | } |
997 | } |
1214 | } |
998 | |
1215 | |
999 | static void noinline |
1216 | static void noinline |
1000 | loop_destroy (EV_P) |
1217 | loop_destroy (EV_P) |
1001 | { |
1218 | { |
1002 | int i; |
1219 | int i; |
|
|
1220 | |
|
|
1221 | if (ev_is_active (&pipeev)) |
|
|
1222 | { |
|
|
1223 | ev_ref (EV_A); /* signal watcher */ |
|
|
1224 | ev_io_stop (EV_A_ &pipeev); |
|
|
1225 | |
|
|
1226 | #if EV_USE_EVENTFD |
|
|
1227 | if (evfd >= 0) |
|
|
1228 | close (evfd); |
|
|
1229 | #endif |
|
|
1230 | |
|
|
1231 | if (evpipe [0] >= 0) |
|
|
1232 | { |
|
|
1233 | close (evpipe [0]); |
|
|
1234 | close (evpipe [1]); |
|
|
1235 | } |
|
|
1236 | } |
1003 | |
1237 | |
1004 | #if EV_USE_INOTIFY |
1238 | #if EV_USE_INOTIFY |
1005 | if (fs_fd >= 0) |
1239 | if (fs_fd >= 0) |
1006 | close (fs_fd); |
1240 | close (fs_fd); |
1007 | #endif |
1241 | #endif |
… | |
… | |
1030 | array_free (pending, [i]); |
1264 | array_free (pending, [i]); |
1031 | #if EV_IDLE_ENABLE |
1265 | #if EV_IDLE_ENABLE |
1032 | array_free (idle, [i]); |
1266 | array_free (idle, [i]); |
1033 | #endif |
1267 | #endif |
1034 | } |
1268 | } |
|
|
1269 | |
|
|
1270 | ev_free (anfds); anfdmax = 0; |
1035 | |
1271 | |
1036 | /* have to use the microsoft-never-gets-it-right macro */ |
1272 | /* have to use the microsoft-never-gets-it-right macro */ |
1037 | array_free (fdchange, EMPTY); |
1273 | array_free (fdchange, EMPTY); |
1038 | array_free (timer, EMPTY); |
1274 | array_free (timer, EMPTY); |
1039 | #if EV_PERIODIC_ENABLE |
1275 | #if EV_PERIODIC_ENABLE |
1040 | array_free (periodic, EMPTY); |
1276 | array_free (periodic, EMPTY); |
1041 | #endif |
1277 | #endif |
|
|
1278 | #if EV_FORK_ENABLE |
|
|
1279 | array_free (fork, EMPTY); |
|
|
1280 | #endif |
1042 | array_free (prepare, EMPTY); |
1281 | array_free (prepare, EMPTY); |
1043 | array_free (check, EMPTY); |
1282 | array_free (check, EMPTY); |
|
|
1283 | #if EV_ASYNC_ENABLE |
|
|
1284 | array_free (async, EMPTY); |
|
|
1285 | #endif |
1044 | |
1286 | |
1045 | backend = 0; |
1287 | backend = 0; |
1046 | } |
1288 | } |
1047 | |
1289 | |
|
|
1290 | #if EV_USE_INOTIFY |
1048 | void inline_size infy_fork (EV_P); |
1291 | void inline_size infy_fork (EV_P); |
|
|
1292 | #endif |
1049 | |
1293 | |
1050 | void inline_size |
1294 | void inline_size |
1051 | loop_fork (EV_P) |
1295 | loop_fork (EV_P) |
1052 | { |
1296 | { |
1053 | #if EV_USE_PORT |
1297 | #if EV_USE_PORT |
… | |
… | |
1061 | #endif |
1305 | #endif |
1062 | #if EV_USE_INOTIFY |
1306 | #if EV_USE_INOTIFY |
1063 | infy_fork (EV_A); |
1307 | infy_fork (EV_A); |
1064 | #endif |
1308 | #endif |
1065 | |
1309 | |
1066 | if (ev_is_active (&sigev)) |
1310 | if (ev_is_active (&pipeev)) |
1067 | { |
1311 | { |
1068 | /* default loop */ |
1312 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1313 | /* while we modify the fd vars */ |
|
|
1314 | gotsig = 1; |
|
|
1315 | #if EV_ASYNC_ENABLE |
|
|
1316 | gotasync = 1; |
|
|
1317 | #endif |
1069 | |
1318 | |
1070 | ev_ref (EV_A); |
1319 | ev_ref (EV_A); |
1071 | ev_io_stop (EV_A_ &sigev); |
1320 | ev_io_stop (EV_A_ &pipeev); |
|
|
1321 | |
|
|
1322 | #if EV_USE_EVENTFD |
|
|
1323 | if (evfd >= 0) |
|
|
1324 | close (evfd); |
|
|
1325 | #endif |
|
|
1326 | |
|
|
1327 | if (evpipe [0] >= 0) |
|
|
1328 | { |
1072 | close (sigpipe [0]); |
1329 | close (evpipe [0]); |
1073 | close (sigpipe [1]); |
1330 | close (evpipe [1]); |
|
|
1331 | } |
1074 | |
1332 | |
1075 | while (pipe (sigpipe)) |
|
|
1076 | syserr ("(libev) error creating pipe"); |
|
|
1077 | |
|
|
1078 | siginit (EV_A); |
1333 | evpipe_init (EV_A); |
|
|
1334 | /* now iterate over everything, in case we missed something */ |
|
|
1335 | pipecb (EV_A_ &pipeev, EV_READ); |
1079 | } |
1336 | } |
1080 | |
1337 | |
1081 | postfork = 0; |
1338 | postfork = 0; |
1082 | } |
1339 | } |
1083 | |
1340 | |
… | |
… | |
1105 | } |
1362 | } |
1106 | |
1363 | |
1107 | void |
1364 | void |
1108 | ev_loop_fork (EV_P) |
1365 | ev_loop_fork (EV_P) |
1109 | { |
1366 | { |
1110 | postfork = 1; |
1367 | postfork = 1; /* must be in line with ev_default_fork */ |
1111 | } |
1368 | } |
1112 | |
1369 | |
1113 | #endif |
1370 | #endif |
1114 | |
1371 | |
1115 | #if EV_MULTIPLICITY |
1372 | #if EV_MULTIPLICITY |
… | |
… | |
1118 | #else |
1375 | #else |
1119 | int |
1376 | int |
1120 | ev_default_loop (unsigned int flags) |
1377 | ev_default_loop (unsigned int flags) |
1121 | #endif |
1378 | #endif |
1122 | { |
1379 | { |
1123 | if (sigpipe [0] == sigpipe [1]) |
|
|
1124 | if (pipe (sigpipe)) |
|
|
1125 | return 0; |
|
|
1126 | |
|
|
1127 | if (!ev_default_loop_ptr) |
1380 | if (!ev_default_loop_ptr) |
1128 | { |
1381 | { |
1129 | #if EV_MULTIPLICITY |
1382 | #if EV_MULTIPLICITY |
1130 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1383 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1131 | #else |
1384 | #else |
… | |
… | |
1134 | |
1387 | |
1135 | loop_init (EV_A_ flags); |
1388 | loop_init (EV_A_ flags); |
1136 | |
1389 | |
1137 | if (ev_backend (EV_A)) |
1390 | if (ev_backend (EV_A)) |
1138 | { |
1391 | { |
1139 | siginit (EV_A); |
|
|
1140 | |
|
|
1141 | #ifndef _WIN32 |
1392 | #ifndef _WIN32 |
1142 | ev_signal_init (&childev, childcb, SIGCHLD); |
1393 | ev_signal_init (&childev, childcb, SIGCHLD); |
1143 | ev_set_priority (&childev, EV_MAXPRI); |
1394 | ev_set_priority (&childev, EV_MAXPRI); |
1144 | ev_signal_start (EV_A_ &childev); |
1395 | ev_signal_start (EV_A_ &childev); |
1145 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1396 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1162 | #ifndef _WIN32 |
1413 | #ifndef _WIN32 |
1163 | ev_ref (EV_A); /* child watcher */ |
1414 | ev_ref (EV_A); /* child watcher */ |
1164 | ev_signal_stop (EV_A_ &childev); |
1415 | ev_signal_stop (EV_A_ &childev); |
1165 | #endif |
1416 | #endif |
1166 | |
1417 | |
1167 | ev_ref (EV_A); /* signal watcher */ |
|
|
1168 | ev_io_stop (EV_A_ &sigev); |
|
|
1169 | |
|
|
1170 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1171 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1172 | |
|
|
1173 | loop_destroy (EV_A); |
1418 | loop_destroy (EV_A); |
1174 | } |
1419 | } |
1175 | |
1420 | |
1176 | void |
1421 | void |
1177 | ev_default_fork (void) |
1422 | ev_default_fork (void) |
… | |
… | |
1179 | #if EV_MULTIPLICITY |
1424 | #if EV_MULTIPLICITY |
1180 | struct ev_loop *loop = ev_default_loop_ptr; |
1425 | struct ev_loop *loop = ev_default_loop_ptr; |
1181 | #endif |
1426 | #endif |
1182 | |
1427 | |
1183 | if (backend) |
1428 | if (backend) |
1184 | postfork = 1; |
1429 | postfork = 1; /* must be in line with ev_loop_fork */ |
1185 | } |
1430 | } |
1186 | |
1431 | |
1187 | /*****************************************************************************/ |
1432 | /*****************************************************************************/ |
1188 | |
1433 | |
1189 | void |
1434 | void |
… | |
… | |
1398 | static int loop_done; |
1643 | static int loop_done; |
1399 | |
1644 | |
1400 | void |
1645 | void |
1401 | ev_loop (EV_P_ int flags) |
1646 | ev_loop (EV_P_ int flags) |
1402 | { |
1647 | { |
1403 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1648 | loop_done = EVUNLOOP_CANCEL; |
1404 | ? EVUNLOOP_ONE |
|
|
1405 | : EVUNLOOP_CANCEL; |
|
|
1406 | |
1649 | |
1407 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1650 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1408 | |
1651 | |
1409 | do |
1652 | do |
1410 | { |
1653 | { |
… | |
… | |
1444 | /* update fd-related kernel structures */ |
1687 | /* update fd-related kernel structures */ |
1445 | fd_reify (EV_A); |
1688 | fd_reify (EV_A); |
1446 | |
1689 | |
1447 | /* calculate blocking time */ |
1690 | /* calculate blocking time */ |
1448 | { |
1691 | { |
1449 | ev_tstamp block; |
1692 | ev_tstamp waittime = 0.; |
|
|
1693 | ev_tstamp sleeptime = 0.; |
1450 | |
1694 | |
1451 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1695 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1452 | block = 0.; /* do not block at all */ |
|
|
1453 | else |
|
|
1454 | { |
1696 | { |
1455 | /* update time to cancel out callback processing overhead */ |
1697 | /* update time to cancel out callback processing overhead */ |
1456 | time_update (EV_A_ 1e100); |
1698 | time_update (EV_A_ 1e100); |
1457 | |
1699 | |
1458 | block = MAX_BLOCKTIME; |
1700 | waittime = MAX_BLOCKTIME; |
1459 | |
1701 | |
1460 | if (timercnt) |
1702 | if (timercnt) |
1461 | { |
1703 | { |
1462 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1704 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1463 | if (block > to) block = to; |
1705 | if (waittime > to) waittime = to; |
1464 | } |
1706 | } |
1465 | |
1707 | |
1466 | #if EV_PERIODIC_ENABLE |
1708 | #if EV_PERIODIC_ENABLE |
1467 | if (periodiccnt) |
1709 | if (periodiccnt) |
1468 | { |
1710 | { |
1469 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1711 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1470 | if (block > to) block = to; |
1712 | if (waittime > to) waittime = to; |
1471 | } |
1713 | } |
1472 | #endif |
1714 | #endif |
1473 | |
1715 | |
1474 | if (expect_false (block < 0.)) block = 0.; |
1716 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1717 | waittime = timeout_blocktime; |
|
|
1718 | |
|
|
1719 | sleeptime = waittime - backend_fudge; |
|
|
1720 | |
|
|
1721 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1722 | sleeptime = io_blocktime; |
|
|
1723 | |
|
|
1724 | if (sleeptime) |
|
|
1725 | { |
|
|
1726 | ev_sleep (sleeptime); |
|
|
1727 | waittime -= sleeptime; |
|
|
1728 | } |
1475 | } |
1729 | } |
1476 | |
1730 | |
1477 | ++loop_count; |
1731 | ++loop_count; |
1478 | backend_poll (EV_A_ block); |
1732 | backend_poll (EV_A_ waittime); |
1479 | |
1733 | |
1480 | /* update ev_rt_now, do magic */ |
1734 | /* update ev_rt_now, do magic */ |
1481 | time_update (EV_A_ block); |
1735 | time_update (EV_A_ waittime + sleeptime); |
1482 | } |
1736 | } |
1483 | |
1737 | |
1484 | /* queue pending timers and reschedule them */ |
1738 | /* queue pending timers and reschedule them */ |
1485 | timers_reify (EV_A); /* relative timers called last */ |
1739 | timers_reify (EV_A); /* relative timers called last */ |
1486 | #if EV_PERIODIC_ENABLE |
1740 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1495 | /* queue check watchers, to be executed first */ |
1749 | /* queue check watchers, to be executed first */ |
1496 | if (expect_false (checkcnt)) |
1750 | if (expect_false (checkcnt)) |
1497 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1751 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1498 | |
1752 | |
1499 | call_pending (EV_A); |
1753 | call_pending (EV_A); |
1500 | |
|
|
1501 | } |
1754 | } |
1502 | while (expect_true (activecnt && !loop_done)); |
1755 | while (expect_true ( |
|
|
1756 | activecnt |
|
|
1757 | && !loop_done |
|
|
1758 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1759 | )); |
1503 | |
1760 | |
1504 | if (loop_done == EVUNLOOP_ONE) |
1761 | if (loop_done == EVUNLOOP_ONE) |
1505 | loop_done = EVUNLOOP_CANCEL; |
1762 | loop_done = EVUNLOOP_CANCEL; |
1506 | } |
1763 | } |
1507 | |
1764 | |
… | |
… | |
1600 | |
1857 | |
1601 | ev_start (EV_A_ (W)w, 1); |
1858 | ev_start (EV_A_ (W)w, 1); |
1602 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1859 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1603 | wlist_add (&anfds[fd].head, (WL)w); |
1860 | wlist_add (&anfds[fd].head, (WL)w); |
1604 | |
1861 | |
1605 | fd_change (EV_A_ fd, w->events & EV_IOFDSET); |
1862 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
1606 | w->events &= ~ EV_IOFDSET; |
1863 | w->events &= ~EV_IOFDSET; |
1607 | } |
1864 | } |
1608 | |
1865 | |
1609 | void noinline |
1866 | void noinline |
1610 | ev_io_stop (EV_P_ ev_io *w) |
1867 | ev_io_stop (EV_P_ ev_io *w) |
1611 | { |
1868 | { |
… | |
… | |
1616 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1873 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1617 | |
1874 | |
1618 | wlist_del (&anfds[w->fd].head, (WL)w); |
1875 | wlist_del (&anfds[w->fd].head, (WL)w); |
1619 | ev_stop (EV_A_ (W)w); |
1876 | ev_stop (EV_A_ (W)w); |
1620 | |
1877 | |
1621 | fd_change (EV_A_ w->fd, 0); |
1878 | fd_change (EV_A_ w->fd, 1); |
1622 | } |
1879 | } |
1623 | |
1880 | |
1624 | void noinline |
1881 | void noinline |
1625 | ev_timer_start (EV_P_ ev_timer *w) |
1882 | ev_timer_start (EV_P_ ev_timer *w) |
1626 | { |
1883 | { |
… | |
… | |
1753 | if (expect_false (ev_is_active (w))) |
2010 | if (expect_false (ev_is_active (w))) |
1754 | return; |
2011 | return; |
1755 | |
2012 | |
1756 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2013 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1757 | |
2014 | |
|
|
2015 | evpipe_init (EV_A); |
|
|
2016 | |
1758 | { |
2017 | { |
1759 | #ifndef _WIN32 |
2018 | #ifndef _WIN32 |
1760 | sigset_t full, prev; |
2019 | sigset_t full, prev; |
1761 | sigfillset (&full); |
2020 | sigfillset (&full); |
1762 | sigprocmask (SIG_SETMASK, &full, &prev); |
2021 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1773 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2032 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1774 | |
2033 | |
1775 | if (!((WL)w)->next) |
2034 | if (!((WL)w)->next) |
1776 | { |
2035 | { |
1777 | #if _WIN32 |
2036 | #if _WIN32 |
1778 | signal (w->signum, sighandler); |
2037 | signal (w->signum, ev_sighandler); |
1779 | #else |
2038 | #else |
1780 | struct sigaction sa; |
2039 | struct sigaction sa; |
1781 | sa.sa_handler = sighandler; |
2040 | sa.sa_handler = ev_sighandler; |
1782 | sigfillset (&sa.sa_mask); |
2041 | sigfillset (&sa.sa_mask); |
1783 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2042 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1784 | sigaction (w->signum, &sa, 0); |
2043 | sigaction (w->signum, &sa, 0); |
1785 | #endif |
2044 | #endif |
1786 | } |
2045 | } |
… | |
… | |
2170 | |
2429 | |
2171 | #if EV_EMBED_ENABLE |
2430 | #if EV_EMBED_ENABLE |
2172 | void noinline |
2431 | void noinline |
2173 | ev_embed_sweep (EV_P_ ev_embed *w) |
2432 | ev_embed_sweep (EV_P_ ev_embed *w) |
2174 | { |
2433 | { |
2175 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
2434 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2176 | } |
2435 | } |
2177 | |
2436 | |
2178 | static void |
2437 | static void |
2179 | embed_cb (EV_P_ ev_io *io, int revents) |
2438 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2180 | { |
2439 | { |
2181 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2440 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2182 | |
2441 | |
2183 | if (ev_cb (w)) |
2442 | if (ev_cb (w)) |
2184 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2443 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2185 | else |
2444 | else |
2186 | ev_embed_sweep (loop, w); |
2445 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2187 | } |
2446 | } |
|
|
2447 | |
|
|
2448 | static void |
|
|
2449 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2450 | { |
|
|
2451 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2452 | |
|
|
2453 | { |
|
|
2454 | struct ev_loop *loop = w->other; |
|
|
2455 | |
|
|
2456 | while (fdchangecnt) |
|
|
2457 | { |
|
|
2458 | fd_reify (EV_A); |
|
|
2459 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2460 | } |
|
|
2461 | } |
|
|
2462 | } |
|
|
2463 | |
|
|
2464 | #if 0 |
|
|
2465 | static void |
|
|
2466 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2467 | { |
|
|
2468 | ev_idle_stop (EV_A_ idle); |
|
|
2469 | } |
|
|
2470 | #endif |
2188 | |
2471 | |
2189 | void |
2472 | void |
2190 | ev_embed_start (EV_P_ ev_embed *w) |
2473 | ev_embed_start (EV_P_ ev_embed *w) |
2191 | { |
2474 | { |
2192 | if (expect_false (ev_is_active (w))) |
2475 | if (expect_false (ev_is_active (w))) |
2193 | return; |
2476 | return; |
2194 | |
2477 | |
2195 | { |
2478 | { |
2196 | struct ev_loop *loop = w->loop; |
2479 | struct ev_loop *loop = w->other; |
2197 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2480 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2198 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
2481 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2199 | } |
2482 | } |
2200 | |
2483 | |
2201 | ev_set_priority (&w->io, ev_priority (w)); |
2484 | ev_set_priority (&w->io, ev_priority (w)); |
2202 | ev_io_start (EV_A_ &w->io); |
2485 | ev_io_start (EV_A_ &w->io); |
2203 | |
2486 | |
|
|
2487 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2488 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2489 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2490 | |
|
|
2491 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2492 | |
2204 | ev_start (EV_A_ (W)w, 1); |
2493 | ev_start (EV_A_ (W)w, 1); |
2205 | } |
2494 | } |
2206 | |
2495 | |
2207 | void |
2496 | void |
2208 | ev_embed_stop (EV_P_ ev_embed *w) |
2497 | ev_embed_stop (EV_P_ ev_embed *w) |
… | |
… | |
2210 | clear_pending (EV_A_ (W)w); |
2499 | clear_pending (EV_A_ (W)w); |
2211 | if (expect_false (!ev_is_active (w))) |
2500 | if (expect_false (!ev_is_active (w))) |
2212 | return; |
2501 | return; |
2213 | |
2502 | |
2214 | ev_io_stop (EV_A_ &w->io); |
2503 | ev_io_stop (EV_A_ &w->io); |
|
|
2504 | ev_prepare_stop (EV_A_ &w->prepare); |
2215 | |
2505 | |
2216 | ev_stop (EV_A_ (W)w); |
2506 | ev_stop (EV_A_ (W)w); |
2217 | } |
2507 | } |
2218 | #endif |
2508 | #endif |
2219 | |
2509 | |
… | |
… | |
2244 | |
2534 | |
2245 | ev_stop (EV_A_ (W)w); |
2535 | ev_stop (EV_A_ (W)w); |
2246 | } |
2536 | } |
2247 | #endif |
2537 | #endif |
2248 | |
2538 | |
|
|
2539 | #if EV_ASYNC_ENABLE |
|
|
2540 | void |
|
|
2541 | ev_async_start (EV_P_ ev_async *w) |
|
|
2542 | { |
|
|
2543 | if (expect_false (ev_is_active (w))) |
|
|
2544 | return; |
|
|
2545 | |
|
|
2546 | evpipe_init (EV_A); |
|
|
2547 | |
|
|
2548 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2549 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2550 | asyncs [asynccnt - 1] = w; |
|
|
2551 | } |
|
|
2552 | |
|
|
2553 | void |
|
|
2554 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2555 | { |
|
|
2556 | clear_pending (EV_A_ (W)w); |
|
|
2557 | if (expect_false (!ev_is_active (w))) |
|
|
2558 | return; |
|
|
2559 | |
|
|
2560 | { |
|
|
2561 | int active = ((W)w)->active; |
|
|
2562 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2563 | ((W)asyncs [active - 1])->active = active; |
|
|
2564 | } |
|
|
2565 | |
|
|
2566 | ev_stop (EV_A_ (W)w); |
|
|
2567 | } |
|
|
2568 | |
|
|
2569 | void |
|
|
2570 | ev_async_send (EV_P_ ev_async *w) |
|
|
2571 | { |
|
|
2572 | w->sent = 1; |
|
|
2573 | evpipe_write (EV_A_ &gotasync); |
|
|
2574 | } |
|
|
2575 | #endif |
|
|
2576 | |
2249 | /*****************************************************************************/ |
2577 | /*****************************************************************************/ |
2250 | |
2578 | |
2251 | struct ev_once |
2579 | struct ev_once |
2252 | { |
2580 | { |
2253 | ev_io io; |
2581 | ev_io io; |
… | |
… | |
2308 | ev_timer_set (&once->to, timeout, 0.); |
2636 | ev_timer_set (&once->to, timeout, 0.); |
2309 | ev_timer_start (EV_A_ &once->to); |
2637 | ev_timer_start (EV_A_ &once->to); |
2310 | } |
2638 | } |
2311 | } |
2639 | } |
2312 | |
2640 | |
|
|
2641 | #if EV_MULTIPLICITY |
|
|
2642 | #include "ev_wrap.h" |
|
|
2643 | #endif |
|
|
2644 | |
2313 | #ifdef __cplusplus |
2645 | #ifdef __cplusplus |
2314 | } |
2646 | } |
2315 | #endif |
2647 | #endif |
2316 | |
2648 | |