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) 2007,2008,2009,2010,2011 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 | * |
|
|
10 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
11 | * this list of conditions and the following disclaimer. |
|
|
12 | * |
|
|
13 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
14 | * notice, this list of conditions and the following disclaimer in the |
|
|
15 | * documentation and/or other materials provided with the distribution. |
|
|
16 | * |
|
|
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
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 |
|
|
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
|
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
|
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
|
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
|
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
|
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
|
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
30 | */ |
38 | */ |
|
|
39 | |
|
|
40 | /* this big block deduces configuration from config.h */ |
|
|
41 | #ifndef EV_STANDALONE |
31 | #if EV_USE_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
|
|
43 | # include EV_CONFIG_H |
|
|
44 | # else |
32 | # include "config.h" |
45 | # include "config.h" |
|
|
46 | # endif |
|
|
47 | |
|
|
48 | # if HAVE_CLOCK_SYSCALL |
|
|
49 | # ifndef EV_USE_CLOCK_SYSCALL |
|
|
50 | # define EV_USE_CLOCK_SYSCALL 1 |
|
|
51 | # ifndef EV_USE_REALTIME |
|
|
52 | # define EV_USE_REALTIME 0 |
|
|
53 | # endif |
|
|
54 | # ifndef EV_USE_MONOTONIC |
|
|
55 | # define EV_USE_MONOTONIC 1 |
|
|
56 | # endif |
|
|
57 | # endif |
|
|
58 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
|
|
59 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
60 | # endif |
|
|
61 | |
|
|
62 | # if HAVE_CLOCK_GETTIME |
|
|
63 | # ifndef EV_USE_MONOTONIC |
|
|
64 | # define EV_USE_MONOTONIC 1 |
|
|
65 | # endif |
|
|
66 | # ifndef EV_USE_REALTIME |
|
|
67 | # define EV_USE_REALTIME 0 |
|
|
68 | # endif |
|
|
69 | # else |
|
|
70 | # ifndef EV_USE_MONOTONIC |
|
|
71 | # define EV_USE_MONOTONIC 0 |
|
|
72 | # endif |
|
|
73 | # ifndef EV_USE_REALTIME |
|
|
74 | # define EV_USE_REALTIME 0 |
|
|
75 | # endif |
|
|
76 | # endif |
|
|
77 | |
|
|
78 | # if HAVE_NANOSLEEP |
|
|
79 | # ifndef EV_USE_NANOSLEEP |
|
|
80 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
81 | # endif |
|
|
82 | # else |
|
|
83 | # undef EV_USE_NANOSLEEP |
|
|
84 | # define EV_USE_NANOSLEEP 0 |
|
|
85 | # endif |
|
|
86 | |
|
|
87 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
88 | # ifndef EV_USE_SELECT |
|
|
89 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
|
|
90 | # endif |
|
|
91 | # else |
|
|
92 | # undef EV_USE_SELECT |
|
|
93 | # define EV_USE_SELECT 0 |
|
|
94 | # endif |
|
|
95 | |
|
|
96 | # if HAVE_POLL && HAVE_POLL_H |
|
|
97 | # ifndef EV_USE_POLL |
|
|
98 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
99 | # endif |
|
|
100 | # else |
|
|
101 | # undef EV_USE_POLL |
|
|
102 | # define EV_USE_POLL 0 |
|
|
103 | # endif |
|
|
104 | |
|
|
105 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
106 | # ifndef EV_USE_EPOLL |
|
|
107 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
108 | # endif |
|
|
109 | # else |
|
|
110 | # undef EV_USE_EPOLL |
|
|
111 | # define EV_USE_EPOLL 0 |
|
|
112 | # endif |
|
|
113 | |
|
|
114 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
|
|
115 | # ifndef EV_USE_KQUEUE |
|
|
116 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
|
|
117 | # endif |
|
|
118 | # else |
|
|
119 | # undef EV_USE_KQUEUE |
|
|
120 | # define EV_USE_KQUEUE 0 |
|
|
121 | # endif |
|
|
122 | |
|
|
123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
124 | # ifndef EV_USE_PORT |
|
|
125 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
|
|
126 | # endif |
|
|
127 | # else |
|
|
128 | # undef EV_USE_PORT |
|
|
129 | # define EV_USE_PORT 0 |
|
|
130 | # endif |
|
|
131 | |
|
|
132 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
133 | # ifndef EV_USE_INOTIFY |
|
|
134 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
135 | # endif |
|
|
136 | # else |
|
|
137 | # undef EV_USE_INOTIFY |
|
|
138 | # define EV_USE_INOTIFY 0 |
|
|
139 | # endif |
|
|
140 | |
|
|
141 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
|
|
142 | # ifndef EV_USE_SIGNALFD |
|
|
143 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
144 | # endif |
|
|
145 | # else |
|
|
146 | # undef EV_USE_SIGNALFD |
|
|
147 | # define EV_USE_SIGNALFD 0 |
|
|
148 | # endif |
|
|
149 | |
|
|
150 | # if HAVE_EVENTFD |
|
|
151 | # ifndef EV_USE_EVENTFD |
|
|
152 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
153 | # endif |
|
|
154 | # else |
|
|
155 | # undef EV_USE_EVENTFD |
|
|
156 | # define EV_USE_EVENTFD 0 |
|
|
157 | # endif |
|
|
158 | |
33 | #endif |
159 | #endif |
34 | |
160 | |
35 | #include <math.h> |
161 | #include <math.h> |
36 | #include <stdlib.h> |
162 | #include <stdlib.h> |
37 | #include <unistd.h> |
163 | #include <string.h> |
38 | #include <fcntl.h> |
164 | #include <fcntl.h> |
39 | #include <signal.h> |
|
|
40 | #include <stddef.h> |
165 | #include <stddef.h> |
41 | |
166 | |
42 | #include <stdio.h> |
167 | #include <stdio.h> |
43 | |
168 | |
44 | #include <assert.h> |
169 | #include <assert.h> |
45 | #include <errno.h> |
170 | #include <errno.h> |
46 | #include <sys/types.h> |
171 | #include <sys/types.h> |
|
|
172 | #include <time.h> |
|
|
173 | #include <limits.h> |
|
|
174 | |
|
|
175 | #include <signal.h> |
|
|
176 | |
|
|
177 | #ifdef EV_H |
|
|
178 | # include EV_H |
|
|
179 | #else |
|
|
180 | # include "ev.h" |
|
|
181 | #endif |
|
|
182 | |
|
|
183 | EV_CPP(extern "C" {) |
|
|
184 | |
47 | #ifndef WIN32 |
185 | #ifndef _WIN32 |
|
|
186 | # include <sys/time.h> |
48 | # include <sys/wait.h> |
187 | # include <sys/wait.h> |
|
|
188 | # include <unistd.h> |
|
|
189 | #else |
|
|
190 | # include <io.h> |
|
|
191 | # define WIN32_LEAN_AND_MEAN |
|
|
192 | # include <windows.h> |
|
|
193 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
194 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | #endif |
195 | # endif |
50 | #include <sys/time.h> |
196 | # undef EV_AVOID_STDIO |
51 | #include <time.h> |
197 | #endif |
52 | |
198 | |
53 | /**/ |
199 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
|
200 | * a limit of 1024 into their select. Where people have brains, |
|
|
201 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
|
202 | * ordered to have a vacuum, or they do anything for money. |
|
|
203 | * This might help. Or not. |
|
|
204 | */ |
|
|
205 | #define _DARWIN_UNLIMITED_SELECT 1 |
|
|
206 | |
|
|
207 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
|
|
208 | |
|
|
209 | /* try to deduce the maximum number of signals on this platform */ |
|
|
210 | #if defined (EV_NSIG) |
|
|
211 | /* use what's provided */ |
|
|
212 | #elif defined (NSIG) |
|
|
213 | # define EV_NSIG (NSIG) |
|
|
214 | #elif defined(_NSIG) |
|
|
215 | # define EV_NSIG (_NSIG) |
|
|
216 | #elif defined (SIGMAX) |
|
|
217 | # define EV_NSIG (SIGMAX+1) |
|
|
218 | #elif defined (SIG_MAX) |
|
|
219 | # define EV_NSIG (SIG_MAX+1) |
|
|
220 | #elif defined (_SIG_MAX) |
|
|
221 | # define EV_NSIG (_SIG_MAX+1) |
|
|
222 | #elif defined (MAXSIG) |
|
|
223 | # define EV_NSIG (MAXSIG+1) |
|
|
224 | #elif defined (MAX_SIG) |
|
|
225 | # define EV_NSIG (MAX_SIG+1) |
|
|
226 | #elif defined (SIGARRAYSIZE) |
|
|
227 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
|
|
228 | #elif defined (_sys_nsig) |
|
|
229 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
|
230 | #else |
|
|
231 | # error "unable to find value for NSIG, please report" |
|
|
232 | /* to make it compile regardless, just remove the above line, */ |
|
|
233 | /* but consider reporting it, too! :) */ |
|
|
234 | # define EV_NSIG 65 |
|
|
235 | #endif |
|
|
236 | |
|
|
237 | #ifndef EV_USE_CLOCK_SYSCALL |
|
|
238 | # if __linux && __GLIBC__ >= 2 |
|
|
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
|
|
240 | # else |
|
|
241 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
242 | # endif |
|
|
243 | #endif |
54 | |
244 | |
55 | #ifndef EV_USE_MONOTONIC |
245 | #ifndef EV_USE_MONOTONIC |
|
|
246 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
|
|
247 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
|
|
248 | # else |
56 | # define EV_USE_MONOTONIC 1 |
249 | # define EV_USE_MONOTONIC 0 |
|
|
250 | # endif |
|
|
251 | #endif |
|
|
252 | |
|
|
253 | #ifndef EV_USE_REALTIME |
|
|
254 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
|
|
255 | #endif |
|
|
256 | |
|
|
257 | #ifndef EV_USE_NANOSLEEP |
|
|
258 | # if _POSIX_C_SOURCE >= 199309L |
|
|
259 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
260 | # else |
|
|
261 | # define EV_USE_NANOSLEEP 0 |
|
|
262 | # endif |
57 | #endif |
263 | #endif |
58 | |
264 | |
59 | #ifndef EV_USE_SELECT |
265 | #ifndef EV_USE_SELECT |
60 | # define EV_USE_SELECT 1 |
266 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
61 | #endif |
267 | #endif |
62 | |
268 | |
63 | #ifndef EV_USE_POLL |
269 | #ifndef EV_USE_POLL |
64 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
270 | # ifdef _WIN32 |
|
|
271 | # define EV_USE_POLL 0 |
|
|
272 | # else |
|
|
273 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
274 | # endif |
65 | #endif |
275 | #endif |
66 | |
276 | |
67 | #ifndef EV_USE_EPOLL |
277 | #ifndef EV_USE_EPOLL |
|
|
278 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
279 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
280 | # else |
68 | # define EV_USE_EPOLL 0 |
281 | # define EV_USE_EPOLL 0 |
|
|
282 | # endif |
69 | #endif |
283 | #endif |
70 | |
284 | |
71 | #ifndef EV_USE_KQUEUE |
285 | #ifndef EV_USE_KQUEUE |
72 | # define EV_USE_KQUEUE 0 |
286 | # define EV_USE_KQUEUE 0 |
73 | #endif |
287 | #endif |
74 | |
288 | |
75 | #ifndef EV_USE_REALTIME |
289 | #ifndef EV_USE_PORT |
76 | # define EV_USE_REALTIME 1 |
290 | # define EV_USE_PORT 0 |
|
|
291 | #endif |
|
|
292 | |
|
|
293 | #ifndef EV_USE_INOTIFY |
|
|
294 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
295 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
296 | # else |
|
|
297 | # define EV_USE_INOTIFY 0 |
77 | #endif |
298 | # endif |
|
|
299 | #endif |
78 | |
300 | |
79 | /**/ |
301 | #ifndef EV_PID_HASHSIZE |
|
|
302 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
303 | #endif |
|
|
304 | |
|
|
305 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
306 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
307 | #endif |
|
|
308 | |
|
|
309 | #ifndef EV_USE_EVENTFD |
|
|
310 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
311 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
312 | # else |
|
|
313 | # define EV_USE_EVENTFD 0 |
|
|
314 | # endif |
|
|
315 | #endif |
|
|
316 | |
|
|
317 | #ifndef EV_USE_SIGNALFD |
|
|
318 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
319 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
320 | # else |
|
|
321 | # define EV_USE_SIGNALFD 0 |
|
|
322 | # endif |
|
|
323 | #endif |
|
|
324 | |
|
|
325 | #if 0 /* debugging */ |
|
|
326 | # define EV_VERIFY 3 |
|
|
327 | # define EV_USE_4HEAP 1 |
|
|
328 | # define EV_HEAP_CACHE_AT 1 |
|
|
329 | #endif |
|
|
330 | |
|
|
331 | #ifndef EV_VERIFY |
|
|
332 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
333 | #endif |
|
|
334 | |
|
|
335 | #ifndef EV_USE_4HEAP |
|
|
336 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
337 | #endif |
|
|
338 | |
|
|
339 | #ifndef EV_HEAP_CACHE_AT |
|
|
340 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
341 | #endif |
|
|
342 | |
|
|
343 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
344 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
345 | #if EV_USE_CLOCK_SYSCALL |
|
|
346 | # include <syscall.h> |
|
|
347 | # ifdef SYS_clock_gettime |
|
|
348 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
349 | # undef EV_USE_MONOTONIC |
|
|
350 | # define EV_USE_MONOTONIC 1 |
|
|
351 | # else |
|
|
352 | # undef EV_USE_CLOCK_SYSCALL |
|
|
353 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
354 | # endif |
|
|
355 | #endif |
|
|
356 | |
|
|
357 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
|
|
358 | |
|
|
359 | #ifdef _AIX |
|
|
360 | /* AIX has a completely broken poll.h header */ |
|
|
361 | # undef EV_USE_POLL |
|
|
362 | # define EV_USE_POLL 0 |
|
|
363 | #endif |
80 | |
364 | |
81 | #ifndef CLOCK_MONOTONIC |
365 | #ifndef CLOCK_MONOTONIC |
82 | # undef EV_USE_MONOTONIC |
366 | # undef EV_USE_MONOTONIC |
83 | # define EV_USE_MONOTONIC 0 |
367 | # define EV_USE_MONOTONIC 0 |
84 | #endif |
368 | #endif |
… | |
… | |
86 | #ifndef CLOCK_REALTIME |
370 | #ifndef CLOCK_REALTIME |
87 | # undef EV_USE_REALTIME |
371 | # undef EV_USE_REALTIME |
88 | # define EV_USE_REALTIME 0 |
372 | # define EV_USE_REALTIME 0 |
89 | #endif |
373 | #endif |
90 | |
374 | |
|
|
375 | #if !EV_STAT_ENABLE |
|
|
376 | # undef EV_USE_INOTIFY |
|
|
377 | # define EV_USE_INOTIFY 0 |
|
|
378 | #endif |
|
|
379 | |
|
|
380 | #if !EV_USE_NANOSLEEP |
|
|
381 | # ifndef _WIN32 |
|
|
382 | # include <sys/select.h> |
|
|
383 | # endif |
|
|
384 | #endif |
|
|
385 | |
|
|
386 | #if EV_USE_INOTIFY |
|
|
387 | # include <sys/statfs.h> |
|
|
388 | # include <sys/inotify.h> |
|
|
389 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
390 | # ifndef IN_DONT_FOLLOW |
|
|
391 | # undef EV_USE_INOTIFY |
|
|
392 | # define EV_USE_INOTIFY 0 |
|
|
393 | # endif |
|
|
394 | #endif |
|
|
395 | |
|
|
396 | #if EV_SELECT_IS_WINSOCKET |
|
|
397 | # include <winsock.h> |
|
|
398 | #endif |
|
|
399 | |
|
|
400 | #if EV_USE_EVENTFD |
|
|
401 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
402 | # include <stdint.h> |
|
|
403 | # ifndef EFD_NONBLOCK |
|
|
404 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
405 | # endif |
|
|
406 | # ifndef EFD_CLOEXEC |
|
|
407 | # ifdef O_CLOEXEC |
|
|
408 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
409 | # else |
|
|
410 | # define EFD_CLOEXEC 02000000 |
|
|
411 | # endif |
|
|
412 | # endif |
|
|
413 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
414 | #endif |
|
|
415 | |
|
|
416 | #if EV_USE_SIGNALFD |
|
|
417 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
418 | # include <stdint.h> |
|
|
419 | # ifndef SFD_NONBLOCK |
|
|
420 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
421 | # endif |
|
|
422 | # ifndef SFD_CLOEXEC |
|
|
423 | # ifdef O_CLOEXEC |
|
|
424 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
425 | # else |
|
|
426 | # define SFD_CLOEXEC 02000000 |
|
|
427 | # endif |
|
|
428 | # endif |
|
|
429 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
430 | |
|
|
431 | struct signalfd_siginfo |
|
|
432 | { |
|
|
433 | uint32_t ssi_signo; |
|
|
434 | char pad[128 - sizeof (uint32_t)]; |
|
|
435 | }; |
|
|
436 | #endif |
|
|
437 | |
91 | /**/ |
438 | /**/ |
92 | |
439 | |
|
|
440 | #if EV_VERIFY >= 3 |
|
|
441 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
442 | #else |
|
|
443 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
444 | #endif |
|
|
445 | |
|
|
446 | /* |
|
|
447 | * This is used to avoid floating point rounding problems. |
|
|
448 | * It is added to ev_rt_now when scheduling periodics |
|
|
449 | * to ensure progress, time-wise, even when rounding |
|
|
450 | * errors are against us. |
|
|
451 | * This value is good at least till the year 4000. |
|
|
452 | * Better solutions welcome. |
|
|
453 | */ |
|
|
454 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
|
|
455 | |
93 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
456 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
94 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
457 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
95 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
96 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
|
|
97 | |
458 | |
98 | #include "ev.h" |
459 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
460 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
99 | |
461 | |
100 | #if __GNUC__ >= 3 |
462 | #if __GNUC__ >= 4 |
101 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
463 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
102 | # define inline inline |
464 | # define noinline __attribute__ ((noinline)) |
103 | #else |
465 | #else |
104 | # define expect(expr,value) (expr) |
466 | # define expect(expr,value) (expr) |
105 | # define inline static |
467 | # define noinline |
|
|
468 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
469 | # define inline |
|
|
470 | # endif |
106 | #endif |
471 | #endif |
107 | |
472 | |
108 | #define expect_false(expr) expect ((expr) != 0, 0) |
473 | #define expect_false(expr) expect ((expr) != 0, 0) |
109 | #define expect_true(expr) expect ((expr) != 0, 1) |
474 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
475 | #define inline_size static inline |
110 | |
476 | |
|
|
477 | #if EV_FEATURE_CODE |
|
|
478 | # define inline_speed static inline |
|
|
479 | #else |
|
|
480 | # define inline_speed static noinline |
|
|
481 | #endif |
|
|
482 | |
111 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
483 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
484 | |
|
|
485 | #if EV_MINPRI == EV_MAXPRI |
|
|
486 | # define ABSPRI(w) (((W)w), 0) |
|
|
487 | #else |
112 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
488 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
489 | #endif |
113 | |
490 | |
|
|
491 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
492 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
493 | |
114 | typedef struct ev_watcher *W; |
494 | typedef ev_watcher *W; |
115 | typedef struct ev_watcher_list *WL; |
495 | typedef ev_watcher_list *WL; |
116 | typedef struct ev_watcher_time *WT; |
496 | typedef ev_watcher_time *WT; |
117 | |
497 | |
118 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
498 | #define ev_active(w) ((W)(w))->active |
119 | ev_tstamp ev_now; |
499 | #define ev_at(w) ((WT)(w))->at |
120 | int ev_method; |
|
|
121 | |
500 | |
122 | static int have_monotonic; /* runtime */ |
501 | #if EV_USE_REALTIME |
|
|
502 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
503 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
504 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
505 | #endif |
123 | |
506 | |
124 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
507 | #if EV_USE_MONOTONIC |
125 | static void (*method_modify)(int fd, int oev, int nev); |
508 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
126 | static void (*method_poll)(ev_tstamp timeout); |
509 | #endif |
|
|
510 | |
|
|
511 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
512 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
513 | #endif |
|
|
514 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
515 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
516 | #endif |
|
|
517 | #ifndef EV_WIN32_CLOSE_FD |
|
|
518 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
519 | #endif |
|
|
520 | |
|
|
521 | #ifdef _WIN32 |
|
|
522 | # include "ev_win32.c" |
|
|
523 | #endif |
127 | |
524 | |
128 | /*****************************************************************************/ |
525 | /*****************************************************************************/ |
129 | |
526 | |
|
|
527 | #ifdef __linux |
|
|
528 | # include <sys/utsname.h> |
|
|
529 | #endif |
|
|
530 | |
|
|
531 | static unsigned int noinline |
|
|
532 | ev_linux_version (void) |
|
|
533 | { |
|
|
534 | #ifdef __linux |
|
|
535 | unsigned int v = 0; |
|
|
536 | struct utsname buf; |
|
|
537 | int i; |
|
|
538 | char *p = buf.release; |
|
|
539 | |
|
|
540 | if (uname (&buf)) |
|
|
541 | return 0; |
|
|
542 | |
|
|
543 | for (i = 3+1; --i; ) |
|
|
544 | { |
|
|
545 | unsigned int c = 0; |
|
|
546 | |
|
|
547 | for (;;) |
|
|
548 | { |
|
|
549 | if (*p >= '0' && *p <= '9') |
|
|
550 | c = c * 10 + *p++ - '0'; |
|
|
551 | else |
|
|
552 | { |
|
|
553 | p += *p == '.'; |
|
|
554 | break; |
|
|
555 | } |
|
|
556 | } |
|
|
557 | |
|
|
558 | v = (v << 8) | c; |
|
|
559 | } |
|
|
560 | |
|
|
561 | return v; |
|
|
562 | #else |
|
|
563 | return 0; |
|
|
564 | #endif |
|
|
565 | } |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | #if EV_AVOID_STDIO |
|
|
570 | static void noinline |
|
|
571 | ev_printerr (const char *msg) |
|
|
572 | { |
|
|
573 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
574 | } |
|
|
575 | #endif |
|
|
576 | |
|
|
577 | static void (*syserr_cb)(const char *msg); |
|
|
578 | |
|
|
579 | void |
|
|
580 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
581 | { |
|
|
582 | syserr_cb = cb; |
|
|
583 | } |
|
|
584 | |
|
|
585 | static void noinline |
|
|
586 | ev_syserr (const char *msg) |
|
|
587 | { |
|
|
588 | if (!msg) |
|
|
589 | msg = "(libev) system error"; |
|
|
590 | |
|
|
591 | if (syserr_cb) |
|
|
592 | syserr_cb (msg); |
|
|
593 | else |
|
|
594 | { |
|
|
595 | #if EV_AVOID_STDIO |
|
|
596 | ev_printerr (msg); |
|
|
597 | ev_printerr (": "); |
|
|
598 | ev_printerr (strerror (errno)); |
|
|
599 | ev_printerr ("\n"); |
|
|
600 | #else |
|
|
601 | perror (msg); |
|
|
602 | #endif |
|
|
603 | abort (); |
|
|
604 | } |
|
|
605 | } |
|
|
606 | |
|
|
607 | static void * |
|
|
608 | ev_realloc_emul (void *ptr, long size) |
|
|
609 | { |
|
|
610 | #if __GLIBC__ |
|
|
611 | return realloc (ptr, size); |
|
|
612 | #else |
|
|
613 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
614 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
615 | * the single unix specification, so work around them here. |
|
|
616 | */ |
|
|
617 | |
|
|
618 | if (size) |
|
|
619 | return realloc (ptr, size); |
|
|
620 | |
|
|
621 | free (ptr); |
|
|
622 | return 0; |
|
|
623 | #endif |
|
|
624 | } |
|
|
625 | |
|
|
626 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
627 | |
|
|
628 | void |
|
|
629 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
630 | { |
|
|
631 | alloc = cb; |
|
|
632 | } |
|
|
633 | |
|
|
634 | inline_speed void * |
|
|
635 | ev_realloc (void *ptr, long size) |
|
|
636 | { |
|
|
637 | ptr = alloc (ptr, size); |
|
|
638 | |
|
|
639 | if (!ptr && size) |
|
|
640 | { |
|
|
641 | #if EV_AVOID_STDIO |
|
|
642 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
643 | #else |
|
|
644 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
645 | #endif |
|
|
646 | abort (); |
|
|
647 | } |
|
|
648 | |
|
|
649 | return ptr; |
|
|
650 | } |
|
|
651 | |
|
|
652 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
653 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
654 | |
|
|
655 | /*****************************************************************************/ |
|
|
656 | |
|
|
657 | /* set in reify when reification needed */ |
|
|
658 | #define EV_ANFD_REIFY 1 |
|
|
659 | |
|
|
660 | /* file descriptor info structure */ |
|
|
661 | typedef struct |
|
|
662 | { |
|
|
663 | WL head; |
|
|
664 | unsigned char events; /* the events watched for */ |
|
|
665 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
666 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
667 | unsigned char unused; |
|
|
668 | #if EV_USE_EPOLL |
|
|
669 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
670 | #endif |
|
|
671 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
672 | SOCKET handle; |
|
|
673 | #endif |
|
|
674 | #if EV_USE_IOCP |
|
|
675 | OVERLAPPED or, ow; |
|
|
676 | #endif |
|
|
677 | } ANFD; |
|
|
678 | |
|
|
679 | /* stores the pending event set for a given watcher */ |
|
|
680 | typedef struct |
|
|
681 | { |
|
|
682 | W w; |
|
|
683 | int events; /* the pending event set for the given watcher */ |
|
|
684 | } ANPENDING; |
|
|
685 | |
|
|
686 | #if EV_USE_INOTIFY |
|
|
687 | /* hash table entry per inotify-id */ |
|
|
688 | typedef struct |
|
|
689 | { |
|
|
690 | WL head; |
|
|
691 | } ANFS; |
|
|
692 | #endif |
|
|
693 | |
|
|
694 | /* Heap Entry */ |
|
|
695 | #if EV_HEAP_CACHE_AT |
|
|
696 | /* a heap element */ |
|
|
697 | typedef struct { |
|
|
698 | ev_tstamp at; |
|
|
699 | WT w; |
|
|
700 | } ANHE; |
|
|
701 | |
|
|
702 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
703 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
704 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
705 | #else |
|
|
706 | /* a heap element */ |
|
|
707 | typedef WT ANHE; |
|
|
708 | |
|
|
709 | #define ANHE_w(he) (he) |
|
|
710 | #define ANHE_at(he) (he)->at |
|
|
711 | #define ANHE_at_cache(he) |
|
|
712 | #endif |
|
|
713 | |
|
|
714 | #if EV_MULTIPLICITY |
|
|
715 | |
|
|
716 | struct ev_loop |
|
|
717 | { |
|
|
718 | ev_tstamp ev_rt_now; |
|
|
719 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
720 | #define VAR(name,decl) decl; |
|
|
721 | #include "ev_vars.h" |
|
|
722 | #undef VAR |
|
|
723 | }; |
|
|
724 | #include "ev_wrap.h" |
|
|
725 | |
|
|
726 | static struct ev_loop default_loop_struct; |
|
|
727 | struct ev_loop *ev_default_loop_ptr; |
|
|
728 | |
|
|
729 | #else |
|
|
730 | |
|
|
731 | ev_tstamp ev_rt_now; |
|
|
732 | #define VAR(name,decl) static decl; |
|
|
733 | #include "ev_vars.h" |
|
|
734 | #undef VAR |
|
|
735 | |
|
|
736 | static int ev_default_loop_ptr; |
|
|
737 | |
|
|
738 | #endif |
|
|
739 | |
|
|
740 | #if EV_FEATURE_API |
|
|
741 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
742 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
743 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
744 | #else |
|
|
745 | # define EV_RELEASE_CB (void)0 |
|
|
746 | # define EV_ACQUIRE_CB (void)0 |
|
|
747 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
748 | #endif |
|
|
749 | |
|
|
750 | #define EVBREAK_RECURSE 0x80 |
|
|
751 | |
|
|
752 | /*****************************************************************************/ |
|
|
753 | |
|
|
754 | #ifndef EV_HAVE_EV_TIME |
130 | ev_tstamp |
755 | ev_tstamp |
131 | ev_time (void) |
756 | ev_time (void) |
132 | { |
757 | { |
133 | #if EV_USE_REALTIME |
758 | #if EV_USE_REALTIME |
|
|
759 | if (expect_true (have_realtime)) |
|
|
760 | { |
134 | struct timespec ts; |
761 | struct timespec ts; |
135 | clock_gettime (CLOCK_REALTIME, &ts); |
762 | clock_gettime (CLOCK_REALTIME, &ts); |
136 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
763 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
137 | #else |
764 | } |
|
|
765 | #endif |
|
|
766 | |
138 | struct timeval tv; |
767 | struct timeval tv; |
139 | gettimeofday (&tv, 0); |
768 | gettimeofday (&tv, 0); |
140 | return tv.tv_sec + tv.tv_usec * 1e-6; |
769 | return tv.tv_sec + tv.tv_usec * 1e-6; |
141 | #endif |
|
|
142 | } |
770 | } |
|
|
771 | #endif |
143 | |
772 | |
144 | static ev_tstamp |
773 | inline_size ev_tstamp |
145 | get_clock (void) |
774 | get_clock (void) |
146 | { |
775 | { |
147 | #if EV_USE_MONOTONIC |
776 | #if EV_USE_MONOTONIC |
148 | if (expect_true (have_monotonic)) |
777 | if (expect_true (have_monotonic)) |
149 | { |
778 | { |
… | |
… | |
154 | #endif |
783 | #endif |
155 | |
784 | |
156 | return ev_time (); |
785 | return ev_time (); |
157 | } |
786 | } |
158 | |
787 | |
159 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
788 | #if EV_MULTIPLICITY |
|
|
789 | ev_tstamp |
|
|
790 | ev_now (EV_P) |
|
|
791 | { |
|
|
792 | return ev_rt_now; |
|
|
793 | } |
|
|
794 | #endif |
160 | |
795 | |
161 | #define array_needsize(base,cur,cnt,init) \ |
796 | void |
162 | if (expect_false ((cnt) > cur)) \ |
797 | ev_sleep (ev_tstamp delay) |
163 | { \ |
798 | { |
164 | int newcnt = cur; \ |
799 | if (delay > 0.) |
165 | do \ |
|
|
166 | { \ |
|
|
167 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
168 | } \ |
|
|
169 | while ((cnt) > newcnt); \ |
|
|
170 | \ |
|
|
171 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
172 | init (base + cur, newcnt - cur); \ |
|
|
173 | cur = newcnt; \ |
|
|
174 | } |
800 | { |
|
|
801 | #if EV_USE_NANOSLEEP |
|
|
802 | struct timespec ts; |
|
|
803 | |
|
|
804 | EV_TS_SET (ts, delay); |
|
|
805 | nanosleep (&ts, 0); |
|
|
806 | #elif defined(_WIN32) |
|
|
807 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
808 | #else |
|
|
809 | struct timeval tv; |
|
|
810 | |
|
|
811 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
812 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
813 | /* by older ones */ |
|
|
814 | EV_TV_SET (tv, delay); |
|
|
815 | select (0, 0, 0, 0, &tv); |
|
|
816 | #endif |
|
|
817 | } |
|
|
818 | } |
175 | |
819 | |
176 | /*****************************************************************************/ |
820 | /*****************************************************************************/ |
177 | |
821 | |
178 | typedef struct |
822 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
179 | { |
|
|
180 | struct ev_io *head; |
|
|
181 | unsigned char events; |
|
|
182 | unsigned char reify; |
|
|
183 | } ANFD; |
|
|
184 | |
823 | |
185 | static ANFD *anfds; |
824 | /* find a suitable new size for the given array, */ |
186 | static int anfdmax; |
825 | /* hopefully by rounding to a nice-to-malloc size */ |
187 | |
826 | inline_size int |
188 | static void |
827 | array_nextsize (int elem, int cur, int cnt) |
189 | anfds_init (ANFD *base, int count) |
|
|
190 | { |
828 | { |
191 | while (count--) |
829 | int ncur = cur + 1; |
192 | { |
|
|
193 | base->head = 0; |
|
|
194 | base->events = EV_NONE; |
|
|
195 | base->reify = 0; |
|
|
196 | |
830 | |
197 | ++base; |
831 | do |
|
|
832 | ncur <<= 1; |
|
|
833 | while (cnt > ncur); |
|
|
834 | |
|
|
835 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
836 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
198 | } |
837 | { |
199 | } |
838 | ncur *= elem; |
200 | |
839 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
201 | typedef struct |
840 | ncur = ncur - sizeof (void *) * 4; |
202 | { |
841 | ncur /= elem; |
203 | W w; |
|
|
204 | int events; |
|
|
205 | } ANPENDING; |
|
|
206 | |
|
|
207 | static ANPENDING *pendings [NUMPRI]; |
|
|
208 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
|
|
209 | |
|
|
210 | static void |
|
|
211 | event (W w, int events) |
|
|
212 | { |
|
|
213 | if (w->pending) |
|
|
214 | { |
842 | } |
|
|
843 | |
|
|
844 | return ncur; |
|
|
845 | } |
|
|
846 | |
|
|
847 | static noinline void * |
|
|
848 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
849 | { |
|
|
850 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
851 | return ev_realloc (base, elem * *cur); |
|
|
852 | } |
|
|
853 | |
|
|
854 | #define array_init_zero(base,count) \ |
|
|
855 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
856 | |
|
|
857 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
858 | if (expect_false ((cnt) > (cur))) \ |
|
|
859 | { \ |
|
|
860 | int ocur_ = (cur); \ |
|
|
861 | (base) = (type *)array_realloc \ |
|
|
862 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
863 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
864 | } |
|
|
865 | |
|
|
866 | #if 0 |
|
|
867 | #define array_slim(type,stem) \ |
|
|
868 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
869 | { \ |
|
|
870 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
871 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
872 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
873 | } |
|
|
874 | #endif |
|
|
875 | |
|
|
876 | #define array_free(stem, idx) \ |
|
|
877 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
878 | |
|
|
879 | /*****************************************************************************/ |
|
|
880 | |
|
|
881 | /* dummy callback for pending events */ |
|
|
882 | static void noinline |
|
|
883 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
884 | { |
|
|
885 | } |
|
|
886 | |
|
|
887 | void noinline |
|
|
888 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
889 | { |
|
|
890 | W w_ = (W)w; |
|
|
891 | int pri = ABSPRI (w_); |
|
|
892 | |
|
|
893 | if (expect_false (w_->pending)) |
|
|
894 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
895 | else |
|
|
896 | { |
|
|
897 | w_->pending = ++pendingcnt [pri]; |
|
|
898 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
899 | pendings [pri][w_->pending - 1].w = w_; |
215 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
900 | pendings [pri][w_->pending - 1].events = revents; |
216 | return; |
|
|
217 | } |
901 | } |
218 | |
|
|
219 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
220 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
221 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
222 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
223 | } |
902 | } |
224 | |
903 | |
225 | static void |
904 | inline_speed void |
|
|
905 | feed_reverse (EV_P_ W w) |
|
|
906 | { |
|
|
907 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
908 | rfeeds [rfeedcnt++] = w; |
|
|
909 | } |
|
|
910 | |
|
|
911 | inline_size void |
|
|
912 | feed_reverse_done (EV_P_ int revents) |
|
|
913 | { |
|
|
914 | do |
|
|
915 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
916 | while (rfeedcnt); |
|
|
917 | } |
|
|
918 | |
|
|
919 | inline_speed void |
226 | queue_events (W *events, int eventcnt, int type) |
920 | queue_events (EV_P_ W *events, int eventcnt, int type) |
227 | { |
921 | { |
228 | int i; |
922 | int i; |
229 | |
923 | |
230 | for (i = 0; i < eventcnt; ++i) |
924 | for (i = 0; i < eventcnt; ++i) |
231 | event (events [i], type); |
925 | ev_feed_event (EV_A_ events [i], type); |
232 | } |
926 | } |
233 | |
927 | |
234 | static void |
928 | /*****************************************************************************/ |
|
|
929 | |
|
|
930 | inline_speed void |
235 | fd_event (int fd, int events) |
931 | fd_event_nocheck (EV_P_ int fd, int revents) |
236 | { |
932 | { |
237 | ANFD *anfd = anfds + fd; |
933 | ANFD *anfd = anfds + fd; |
238 | struct ev_io *w; |
934 | ev_io *w; |
239 | |
935 | |
240 | for (w = anfd->head; w; w = w->next) |
936 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
241 | { |
937 | { |
242 | int ev = w->events & events; |
938 | int ev = w->events & revents; |
243 | |
939 | |
244 | if (ev) |
940 | if (ev) |
245 | event ((W)w, ev); |
941 | ev_feed_event (EV_A_ (W)w, ev); |
246 | } |
942 | } |
247 | } |
943 | } |
248 | |
944 | |
249 | /*****************************************************************************/ |
945 | /* do not submit kernel events for fds that have reify set */ |
|
|
946 | /* because that means they changed while we were polling for new events */ |
|
|
947 | inline_speed void |
|
|
948 | fd_event (EV_P_ int fd, int revents) |
|
|
949 | { |
|
|
950 | ANFD *anfd = anfds + fd; |
250 | |
951 | |
251 | static int *fdchanges; |
952 | if (expect_true (!anfd->reify)) |
252 | static int fdchangemax, fdchangecnt; |
953 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
954 | } |
253 | |
955 | |
254 | static void |
956 | void |
255 | fd_reify (void) |
957 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
958 | { |
|
|
959 | if (fd >= 0 && fd < anfdmax) |
|
|
960 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
961 | } |
|
|
962 | |
|
|
963 | /* make sure the external fd watch events are in-sync */ |
|
|
964 | /* with the kernel/libev internal state */ |
|
|
965 | inline_size void |
|
|
966 | fd_reify (EV_P) |
256 | { |
967 | { |
257 | int i; |
968 | int i; |
258 | |
969 | |
259 | for (i = 0; i < fdchangecnt; ++i) |
970 | for (i = 0; i < fdchangecnt; ++i) |
260 | { |
971 | { |
261 | int fd = fdchanges [i]; |
972 | int fd = fdchanges [i]; |
262 | ANFD *anfd = anfds + fd; |
973 | ANFD *anfd = anfds + fd; |
263 | struct ev_io *w; |
974 | ev_io *w; |
264 | |
975 | |
265 | int events = 0; |
976 | unsigned char o_events = anfd->events; |
|
|
977 | unsigned char o_reify = anfd->reify; |
266 | |
978 | |
267 | for (w = anfd->head; w; w = w->next) |
|
|
268 | events |= w->events; |
|
|
269 | |
|
|
270 | anfd->reify = 0; |
979 | anfd->reify = 0; |
271 | |
980 | |
272 | if (anfd->events != events) |
981 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
982 | if (o_reify & EV__IOFDSET) |
273 | { |
983 | { |
274 | method_modify (fd, anfd->events, events); |
984 | unsigned long arg; |
275 | anfd->events = events; |
985 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
986 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
987 | printf ("oi %d %x\n", fd, anfd->handle);//D |
276 | } |
988 | } |
|
|
989 | #endif |
|
|
990 | |
|
|
991 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
992 | { |
|
|
993 | anfd->events = 0; |
|
|
994 | |
|
|
995 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
996 | anfd->events |= (unsigned char)w->events; |
|
|
997 | |
|
|
998 | if (o_events != anfd->events) |
|
|
999 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | if (o_reify & EV__IOFDSET) |
|
|
1003 | backend_modify (EV_A_ fd, o_events, anfd->events); |
277 | } |
1004 | } |
278 | |
1005 | |
279 | fdchangecnt = 0; |
1006 | fdchangecnt = 0; |
280 | } |
1007 | } |
281 | |
1008 | |
282 | static void |
1009 | /* something about the given fd changed */ |
283 | fd_change (int fd) |
1010 | inline_size void |
|
|
1011 | fd_change (EV_P_ int fd, int flags) |
284 | { |
1012 | { |
285 | if (anfds [fd].reify || fdchangecnt < 0) |
1013 | unsigned char reify = anfds [fd].reify; |
286 | return; |
|
|
287 | |
|
|
288 | anfds [fd].reify = 1; |
1014 | anfds [fd].reify |= flags; |
289 | |
1015 | |
|
|
1016 | if (expect_true (!reify)) |
|
|
1017 | { |
290 | ++fdchangecnt; |
1018 | ++fdchangecnt; |
291 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1019 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
292 | fdchanges [fdchangecnt - 1] = fd; |
1020 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1021 | } |
293 | } |
1022 | } |
294 | |
1023 | |
295 | static void |
1024 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1025 | inline_speed void |
296 | fd_kill (int fd) |
1026 | fd_kill (EV_P_ int fd) |
297 | { |
1027 | { |
298 | struct ev_io *w; |
1028 | ev_io *w; |
299 | |
1029 | |
300 | printf ("killing fd %d\n", fd);//D |
|
|
301 | while ((w = anfds [fd].head)) |
1030 | while ((w = (ev_io *)anfds [fd].head)) |
302 | { |
1031 | { |
303 | ev_io_stop (w); |
1032 | ev_io_stop (EV_A_ w); |
304 | event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
1033 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
305 | } |
1034 | } |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1038 | inline_size int |
|
|
1039 | fd_valid (int fd) |
|
|
1040 | { |
|
|
1041 | #ifdef _WIN32 |
|
|
1042 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
1043 | #else |
|
|
1044 | return fcntl (fd, F_GETFD) != -1; |
|
|
1045 | #endif |
306 | } |
1046 | } |
307 | |
1047 | |
308 | /* called on EBADF to verify fds */ |
1048 | /* called on EBADF to verify fds */ |
309 | static void |
1049 | static void noinline |
310 | fd_ebadf (void) |
1050 | fd_ebadf (EV_P) |
311 | { |
1051 | { |
312 | int fd; |
1052 | int fd; |
313 | |
1053 | |
314 | for (fd = 0; fd < anfdmax; ++fd) |
1054 | for (fd = 0; fd < anfdmax; ++fd) |
315 | if (anfds [fd].events) |
1055 | if (anfds [fd].events) |
316 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
1056 | if (!fd_valid (fd) && errno == EBADF) |
317 | fd_kill (fd); |
1057 | fd_kill (EV_A_ fd); |
318 | } |
1058 | } |
319 | |
1059 | |
320 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1060 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
321 | static void |
1061 | static void noinline |
322 | fd_enomem (void) |
1062 | fd_enomem (EV_P) |
323 | { |
1063 | { |
324 | int fd = anfdmax; |
1064 | int fd; |
325 | |
1065 | |
326 | while (fd--) |
1066 | for (fd = anfdmax; fd--; ) |
327 | if (anfds [fd].events) |
1067 | if (anfds [fd].events) |
328 | { |
1068 | { |
329 | close (fd); |
|
|
330 | fd_kill (fd); |
1069 | fd_kill (EV_A_ fd); |
331 | return; |
1070 | break; |
332 | } |
1071 | } |
333 | } |
1072 | } |
334 | |
1073 | |
|
|
1074 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
1075 | static void noinline |
|
|
1076 | fd_rearm_all (EV_P) |
|
|
1077 | { |
|
|
1078 | int fd; |
|
|
1079 | |
|
|
1080 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
1081 | if (anfds [fd].events) |
|
|
1082 | { |
|
|
1083 | anfds [fd].events = 0; |
|
|
1084 | anfds [fd].emask = 0; |
|
|
1085 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
1086 | } |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | /* used to prepare libev internal fd's */ |
|
|
1090 | /* this is not fork-safe */ |
|
|
1091 | inline_speed void |
|
|
1092 | fd_intern (int fd) |
|
|
1093 | { |
|
|
1094 | #ifdef _WIN32 |
|
|
1095 | unsigned long arg = 1; |
|
|
1096 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1097 | #else |
|
|
1098 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1099 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1100 | #endif |
|
|
1101 | } |
|
|
1102 | |
335 | /*****************************************************************************/ |
1103 | /*****************************************************************************/ |
336 | |
1104 | |
337 | static struct ev_timer **timers; |
1105 | /* |
338 | static int timermax, timercnt; |
1106 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1107 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1108 | * the branching factor of the d-tree. |
|
|
1109 | */ |
339 | |
1110 | |
340 | static struct ev_periodic **periodics; |
1111 | /* |
341 | static int periodicmax, periodiccnt; |
1112 | * at the moment we allow libev the luxury of two heaps, |
|
|
1113 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1114 | * which is more cache-efficient. |
|
|
1115 | * the difference is about 5% with 50000+ watchers. |
|
|
1116 | */ |
|
|
1117 | #if EV_USE_4HEAP |
342 | |
1118 | |
|
|
1119 | #define DHEAP 4 |
|
|
1120 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1121 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1122 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1123 | |
|
|
1124 | /* away from the root */ |
|
|
1125 | inline_speed void |
|
|
1126 | downheap (ANHE *heap, int N, int k) |
|
|
1127 | { |
|
|
1128 | ANHE he = heap [k]; |
|
|
1129 | ANHE *E = heap + N + HEAP0; |
|
|
1130 | |
|
|
1131 | for (;;) |
|
|
1132 | { |
|
|
1133 | ev_tstamp minat; |
|
|
1134 | ANHE *minpos; |
|
|
1135 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1136 | |
|
|
1137 | /* find minimum child */ |
|
|
1138 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1139 | { |
|
|
1140 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1141 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1142 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1143 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1144 | } |
|
|
1145 | else if (pos < E) |
|
|
1146 | { |
|
|
1147 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1148 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1149 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1150 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1151 | } |
|
|
1152 | else |
|
|
1153 | break; |
|
|
1154 | |
|
|
1155 | if (ANHE_at (he) <= minat) |
|
|
1156 | break; |
|
|
1157 | |
|
|
1158 | heap [k] = *minpos; |
|
|
1159 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1160 | |
|
|
1161 | k = minpos - heap; |
|
|
1162 | } |
|
|
1163 | |
|
|
1164 | heap [k] = he; |
|
|
1165 | ev_active (ANHE_w (he)) = k; |
|
|
1166 | } |
|
|
1167 | |
|
|
1168 | #else /* 4HEAP */ |
|
|
1169 | |
|
|
1170 | #define HEAP0 1 |
|
|
1171 | #define HPARENT(k) ((k) >> 1) |
|
|
1172 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1173 | |
|
|
1174 | /* away from the root */ |
|
|
1175 | inline_speed void |
|
|
1176 | downheap (ANHE *heap, int N, int k) |
|
|
1177 | { |
|
|
1178 | ANHE he = heap [k]; |
|
|
1179 | |
|
|
1180 | for (;;) |
|
|
1181 | { |
|
|
1182 | int c = k << 1; |
|
|
1183 | |
|
|
1184 | if (c >= N + HEAP0) |
|
|
1185 | break; |
|
|
1186 | |
|
|
1187 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1188 | ? 1 : 0; |
|
|
1189 | |
|
|
1190 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1191 | break; |
|
|
1192 | |
|
|
1193 | heap [k] = heap [c]; |
|
|
1194 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1195 | |
|
|
1196 | k = c; |
|
|
1197 | } |
|
|
1198 | |
|
|
1199 | heap [k] = he; |
|
|
1200 | ev_active (ANHE_w (he)) = k; |
|
|
1201 | } |
|
|
1202 | #endif |
|
|
1203 | |
|
|
1204 | /* towards the root */ |
|
|
1205 | inline_speed void |
|
|
1206 | upheap (ANHE *heap, int k) |
|
|
1207 | { |
|
|
1208 | ANHE he = heap [k]; |
|
|
1209 | |
|
|
1210 | for (;;) |
|
|
1211 | { |
|
|
1212 | int p = HPARENT (k); |
|
|
1213 | |
|
|
1214 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1215 | break; |
|
|
1216 | |
|
|
1217 | heap [k] = heap [p]; |
|
|
1218 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1219 | k = p; |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | heap [k] = he; |
|
|
1223 | ev_active (ANHE_w (he)) = k; |
|
|
1224 | } |
|
|
1225 | |
|
|
1226 | /* move an element suitably so it is in a correct place */ |
|
|
1227 | inline_size void |
|
|
1228 | adjustheap (ANHE *heap, int N, int k) |
|
|
1229 | { |
|
|
1230 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1231 | upheap (heap, k); |
|
|
1232 | else |
|
|
1233 | downheap (heap, N, k); |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1237 | inline_size void |
|
|
1238 | reheap (ANHE *heap, int N) |
|
|
1239 | { |
|
|
1240 | int i; |
|
|
1241 | |
|
|
1242 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1243 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1244 | for (i = 0; i < N; ++i) |
|
|
1245 | upheap (heap, i + HEAP0); |
|
|
1246 | } |
|
|
1247 | |
|
|
1248 | /*****************************************************************************/ |
|
|
1249 | |
|
|
1250 | /* associate signal watchers to a signal signal */ |
|
|
1251 | typedef struct |
|
|
1252 | { |
|
|
1253 | EV_ATOMIC_T pending; |
|
|
1254 | #if EV_MULTIPLICITY |
|
|
1255 | EV_P; |
|
|
1256 | #endif |
|
|
1257 | WL head; |
|
|
1258 | } ANSIG; |
|
|
1259 | |
|
|
1260 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1261 | |
|
|
1262 | /*****************************************************************************/ |
|
|
1263 | |
|
|
1264 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1265 | |
|
|
1266 | static void noinline |
|
|
1267 | evpipe_init (EV_P) |
|
|
1268 | { |
|
|
1269 | if (!ev_is_active (&pipe_w)) |
|
|
1270 | { |
|
|
1271 | # if EV_USE_EVENTFD |
|
|
1272 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1273 | if (evfd < 0 && errno == EINVAL) |
|
|
1274 | evfd = eventfd (0, 0); |
|
|
1275 | |
|
|
1276 | if (evfd >= 0) |
|
|
1277 | { |
|
|
1278 | evpipe [0] = -1; |
|
|
1279 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1280 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1281 | } |
|
|
1282 | else |
|
|
1283 | # endif |
|
|
1284 | { |
|
|
1285 | while (pipe (evpipe)) |
|
|
1286 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1287 | |
|
|
1288 | fd_intern (evpipe [0]); |
|
|
1289 | fd_intern (evpipe [1]); |
|
|
1290 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1291 | } |
|
|
1292 | |
|
|
1293 | ev_io_start (EV_A_ &pipe_w); |
|
|
1294 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1295 | } |
|
|
1296 | } |
|
|
1297 | |
|
|
1298 | inline_size void |
|
|
1299 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1300 | { |
|
|
1301 | if (!*flag) |
|
|
1302 | { |
|
|
1303 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1304 | char dummy; |
|
|
1305 | |
|
|
1306 | *flag = 1; |
|
|
1307 | |
|
|
1308 | #if EV_USE_EVENTFD |
|
|
1309 | if (evfd >= 0) |
|
|
1310 | { |
|
|
1311 | uint64_t counter = 1; |
|
|
1312 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1313 | } |
|
|
1314 | else |
|
|
1315 | #endif |
|
|
1316 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1317 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1318 | /* so when you think this write should be a send instead, please find out */ |
|
|
1319 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1320 | /* tell me. thank you. */ |
|
|
1321 | write (evpipe [1], &dummy, 1); |
|
|
1322 | |
|
|
1323 | errno = old_errno; |
|
|
1324 | } |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | /* called whenever the libev signal pipe */ |
|
|
1328 | /* got some events (signal, async) */ |
343 | static void |
1329 | static void |
344 | upheap (WT *timers, int k) |
1330 | pipecb (EV_P_ ev_io *iow, int revents) |
345 | { |
1331 | { |
346 | WT w = timers [k]; |
1332 | int i; |
347 | |
1333 | |
348 | while (k && timers [k >> 1]->at > w->at) |
1334 | #if EV_USE_EVENTFD |
349 | { |
1335 | if (evfd >= 0) |
350 | timers [k] = timers [k >> 1]; |
|
|
351 | timers [k]->active = k + 1; |
|
|
352 | k >>= 1; |
|
|
353 | } |
1336 | { |
|
|
1337 | uint64_t counter; |
|
|
1338 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1339 | } |
|
|
1340 | else |
|
|
1341 | #endif |
|
|
1342 | { |
|
|
1343 | char dummy; |
|
|
1344 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
|
|
1345 | read (evpipe [0], &dummy, 1); |
|
|
1346 | } |
354 | |
1347 | |
355 | timers [k] = w; |
1348 | if (sig_pending) |
356 | timers [k]->active = k + 1; |
1349 | { |
|
|
1350 | sig_pending = 0; |
357 | |
1351 | |
|
|
1352 | for (i = EV_NSIG - 1; i--; ) |
|
|
1353 | if (expect_false (signals [i].pending)) |
|
|
1354 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | #if EV_ASYNC_ENABLE |
|
|
1358 | if (async_pending) |
|
|
1359 | { |
|
|
1360 | async_pending = 0; |
|
|
1361 | |
|
|
1362 | for (i = asynccnt; i--; ) |
|
|
1363 | if (asyncs [i]->sent) |
|
|
1364 | { |
|
|
1365 | asyncs [i]->sent = 0; |
|
|
1366 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1367 | } |
|
|
1368 | } |
|
|
1369 | #endif |
|
|
1370 | } |
|
|
1371 | |
|
|
1372 | /*****************************************************************************/ |
|
|
1373 | |
|
|
1374 | void |
|
|
1375 | ev_feed_signal (int signum) |
|
|
1376 | { |
|
|
1377 | #if EV_MULTIPLICITY |
|
|
1378 | EV_P = signals [signum - 1].loop; |
|
|
1379 | |
|
|
1380 | if (!EV_A) |
|
|
1381 | return; |
|
|
1382 | #endif |
|
|
1383 | |
|
|
1384 | signals [signum - 1].pending = 1; |
|
|
1385 | evpipe_write (EV_A_ &sig_pending); |
358 | } |
1386 | } |
359 | |
1387 | |
360 | static void |
1388 | static void |
361 | downheap (WT *timers, int N, int k) |
1389 | ev_sighandler (int signum) |
362 | { |
1390 | { |
363 | WT w = timers [k]; |
1391 | #ifdef _WIN32 |
|
|
1392 | signal (signum, ev_sighandler); |
|
|
1393 | #endif |
364 | |
1394 | |
365 | while (k < (N >> 1)) |
1395 | ev_feed_signal (signum); |
366 | { |
1396 | } |
367 | int j = k << 1; |
|
|
368 | |
1397 | |
369 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
1398 | void noinline |
370 | ++j; |
1399 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1400 | { |
|
|
1401 | WL w; |
371 | |
1402 | |
372 | if (w->at <= timers [j]->at) |
1403 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1404 | return; |
|
|
1405 | |
|
|
1406 | --signum; |
|
|
1407 | |
|
|
1408 | #if EV_MULTIPLICITY |
|
|
1409 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
1410 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
1411 | |
|
|
1412 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
1413 | return; |
|
|
1414 | #endif |
|
|
1415 | |
|
|
1416 | signals [signum].pending = 0; |
|
|
1417 | |
|
|
1418 | for (w = signals [signum].head; w; w = w->next) |
|
|
1419 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1420 | } |
|
|
1421 | |
|
|
1422 | #if EV_USE_SIGNALFD |
|
|
1423 | static void |
|
|
1424 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1425 | { |
|
|
1426 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1427 | |
|
|
1428 | for (;;) |
|
|
1429 | { |
|
|
1430 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1431 | |
|
|
1432 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1433 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1434 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1435 | |
|
|
1436 | if (res < (ssize_t)sizeof (si)) |
373 | break; |
1437 | break; |
374 | |
|
|
375 | timers [k] = timers [j]; |
|
|
376 | timers [k]->active = k + 1; |
|
|
377 | k = j; |
|
|
378 | } |
1438 | } |
379 | |
|
|
380 | timers [k] = w; |
|
|
381 | timers [k]->active = k + 1; |
|
|
382 | } |
1439 | } |
|
|
1440 | #endif |
|
|
1441 | |
|
|
1442 | #endif |
383 | |
1443 | |
384 | /*****************************************************************************/ |
1444 | /*****************************************************************************/ |
385 | |
1445 | |
386 | typedef struct |
1446 | #if EV_CHILD_ENABLE |
387 | { |
1447 | static WL childs [EV_PID_HASHSIZE]; |
388 | struct ev_signal *head; |
|
|
389 | sig_atomic_t volatile gotsig; |
|
|
390 | } ANSIG; |
|
|
391 | |
1448 | |
392 | static ANSIG *signals; |
|
|
393 | static int signalmax; |
|
|
394 | |
|
|
395 | static int sigpipe [2]; |
|
|
396 | static sig_atomic_t volatile gotsig; |
|
|
397 | static struct ev_io sigev; |
|
|
398 | |
|
|
399 | static void |
|
|
400 | signals_init (ANSIG *base, int count) |
|
|
401 | { |
|
|
402 | while (count--) |
|
|
403 | { |
|
|
404 | base->head = 0; |
|
|
405 | base->gotsig = 0; |
|
|
406 | |
|
|
407 | ++base; |
|
|
408 | } |
|
|
409 | } |
|
|
410 | |
|
|
411 | static void |
|
|
412 | sighandler (int signum) |
|
|
413 | { |
|
|
414 | signals [signum - 1].gotsig = 1; |
|
|
415 | |
|
|
416 | if (!gotsig) |
|
|
417 | { |
|
|
418 | gotsig = 1; |
|
|
419 | write (sigpipe [1], &signum, 1); |
|
|
420 | } |
|
|
421 | } |
|
|
422 | |
|
|
423 | static void |
|
|
424 | sigcb (struct ev_io *iow, int revents) |
|
|
425 | { |
|
|
426 | struct ev_signal *w; |
|
|
427 | int signum; |
|
|
428 | |
|
|
429 | read (sigpipe [0], &revents, 1); |
|
|
430 | gotsig = 0; |
|
|
431 | |
|
|
432 | for (signum = signalmax; signum--; ) |
|
|
433 | if (signals [signum].gotsig) |
|
|
434 | { |
|
|
435 | signals [signum].gotsig = 0; |
|
|
436 | |
|
|
437 | for (w = signals [signum].head; w; w = w->next) |
|
|
438 | event ((W)w, EV_SIGNAL); |
|
|
439 | } |
|
|
440 | } |
|
|
441 | |
|
|
442 | static void |
|
|
443 | siginit (void) |
|
|
444 | { |
|
|
445 | #ifndef WIN32 |
|
|
446 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
447 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
448 | |
|
|
449 | /* rather than sort out wether we really need nb, set it */ |
|
|
450 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
451 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
452 | #endif |
|
|
453 | |
|
|
454 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
455 | ev_io_start (&sigev); |
|
|
456 | } |
|
|
457 | |
|
|
458 | /*****************************************************************************/ |
|
|
459 | |
|
|
460 | static struct ev_idle **idles; |
|
|
461 | static int idlemax, idlecnt; |
|
|
462 | |
|
|
463 | static struct ev_prepare **prepares; |
|
|
464 | static int preparemax, preparecnt; |
|
|
465 | |
|
|
466 | static struct ev_check **checks; |
|
|
467 | static int checkmax, checkcnt; |
|
|
468 | |
|
|
469 | /*****************************************************************************/ |
|
|
470 | |
|
|
471 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
472 | static struct ev_signal childev; |
1449 | static ev_signal childev; |
473 | |
1450 | |
474 | #ifndef WIN32 |
1451 | #ifndef WIFCONTINUED |
|
|
1452 | # define WIFCONTINUED(status) 0 |
|
|
1453 | #endif |
|
|
1454 | |
|
|
1455 | /* handle a single child status event */ |
|
|
1456 | inline_speed void |
|
|
1457 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1458 | { |
|
|
1459 | ev_child *w; |
|
|
1460 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1461 | |
|
|
1462 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1463 | { |
|
|
1464 | if ((w->pid == pid || !w->pid) |
|
|
1465 | && (!traced || (w->flags & 1))) |
|
|
1466 | { |
|
|
1467 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1468 | w->rpid = pid; |
|
|
1469 | w->rstatus = status; |
|
|
1470 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1471 | } |
|
|
1472 | } |
|
|
1473 | } |
475 | |
1474 | |
476 | #ifndef WCONTINUED |
1475 | #ifndef WCONTINUED |
477 | # define WCONTINUED 0 |
1476 | # define WCONTINUED 0 |
478 | #endif |
1477 | #endif |
479 | |
1478 | |
|
|
1479 | /* called on sigchld etc., calls waitpid */ |
480 | static void |
1480 | static void |
481 | child_reap (struct ev_signal *sw, int chain, int pid, int status) |
|
|
482 | { |
|
|
483 | struct ev_child *w; |
|
|
484 | |
|
|
485 | for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next) |
|
|
486 | if (w->pid == pid || !w->pid) |
|
|
487 | { |
|
|
488 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
489 | w->rpid = pid; |
|
|
490 | w->rstatus = status; |
|
|
491 | printf ("rpid %p %d %d\n", w, pid, w->pid);//D |
|
|
492 | event ((W)w, EV_CHILD); |
|
|
493 | } |
|
|
494 | } |
|
|
495 | |
|
|
496 | static void |
|
|
497 | childcb (struct ev_signal *sw, int revents) |
1481 | childcb (EV_P_ ev_signal *sw, int revents) |
498 | { |
1482 | { |
499 | int pid, status; |
1483 | int pid, status; |
500 | |
1484 | |
501 | printf ("chld %x\n", revents);//D |
1485 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
502 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1486 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
503 | { |
1487 | if (!WCONTINUED |
|
|
1488 | || errno != EINVAL |
|
|
1489 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1490 | return; |
|
|
1491 | |
504 | /* make sure we are called again until all childs have been reaped */ |
1492 | /* make sure we are called again until all children have been reaped */ |
|
|
1493 | /* we need to do it this way so that the callback gets called before we continue */ |
505 | event ((W)sw, EV_SIGNAL); |
1494 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
506 | |
1495 | |
507 | child_reap (sw, pid, pid, status); |
1496 | child_reap (EV_A_ pid, pid, status); |
|
|
1497 | if ((EV_PID_HASHSIZE) > 1) |
508 | child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1498 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
509 | } |
|
|
510 | } |
1499 | } |
511 | |
1500 | |
512 | #endif |
1501 | #endif |
513 | |
1502 | |
514 | /*****************************************************************************/ |
1503 | /*****************************************************************************/ |
515 | |
1504 | |
|
|
1505 | #if EV_USE_IOCP |
|
|
1506 | # include "ev_iocp.c" |
|
|
1507 | #endif |
|
|
1508 | #if EV_USE_PORT |
|
|
1509 | # include "ev_port.c" |
|
|
1510 | #endif |
516 | #if EV_USE_KQUEUE |
1511 | #if EV_USE_KQUEUE |
517 | # include "ev_kqueue.c" |
1512 | # include "ev_kqueue.c" |
518 | #endif |
1513 | #endif |
519 | #if EV_USE_EPOLL |
1514 | #if EV_USE_EPOLL |
520 | # include "ev_epoll.c" |
1515 | # include "ev_epoll.c" |
… | |
… | |
536 | ev_version_minor (void) |
1531 | ev_version_minor (void) |
537 | { |
1532 | { |
538 | return EV_VERSION_MINOR; |
1533 | return EV_VERSION_MINOR; |
539 | } |
1534 | } |
540 | |
1535 | |
541 | /* return true if we are running with elevated privileges and ignore env variables */ |
1536 | /* return true if we are running with elevated privileges and should ignore env variables */ |
542 | static int |
1537 | int inline_size |
543 | enable_secure () |
1538 | enable_secure (void) |
544 | { |
1539 | { |
|
|
1540 | #ifdef _WIN32 |
|
|
1541 | return 0; |
|
|
1542 | #else |
545 | return getuid () != geteuid () |
1543 | return getuid () != geteuid () |
546 | || getgid () != getegid (); |
1544 | || getgid () != getegid (); |
|
|
1545 | #endif |
547 | } |
1546 | } |
548 | |
1547 | |
549 | int ev_init (int methods) |
1548 | unsigned int |
|
|
1549 | ev_supported_backends (void) |
550 | { |
1550 | { |
551 | if (!ev_method) |
1551 | unsigned int flags = 0; |
|
|
1552 | |
|
|
1553 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1554 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1555 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1556 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1557 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1558 | |
|
|
1559 | return flags; |
|
|
1560 | } |
|
|
1561 | |
|
|
1562 | unsigned int |
|
|
1563 | ev_recommended_backends (void) |
|
|
1564 | { |
|
|
1565 | unsigned int flags = ev_supported_backends (); |
|
|
1566 | |
|
|
1567 | #ifndef __NetBSD__ |
|
|
1568 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1569 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1570 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1571 | #endif |
|
|
1572 | #ifdef __APPLE__ |
|
|
1573 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1574 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1575 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1576 | #endif |
|
|
1577 | #ifdef __FreeBSD__ |
|
|
1578 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
1579 | #endif |
|
|
1580 | |
|
|
1581 | return flags; |
|
|
1582 | } |
|
|
1583 | |
|
|
1584 | unsigned int |
|
|
1585 | ev_embeddable_backends (void) |
|
|
1586 | { |
|
|
1587 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1588 | |
|
|
1589 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1590 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
1591 | flags &= ~EVBACKEND_EPOLL; |
|
|
1592 | |
|
|
1593 | return flags; |
|
|
1594 | } |
|
|
1595 | |
|
|
1596 | unsigned int |
|
|
1597 | ev_backend (EV_P) |
|
|
1598 | { |
|
|
1599 | return backend; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | #if EV_FEATURE_API |
|
|
1603 | unsigned int |
|
|
1604 | ev_iteration (EV_P) |
|
|
1605 | { |
|
|
1606 | return loop_count; |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | unsigned int |
|
|
1610 | ev_depth (EV_P) |
|
|
1611 | { |
|
|
1612 | return loop_depth; |
|
|
1613 | } |
|
|
1614 | |
|
|
1615 | void |
|
|
1616 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1617 | { |
|
|
1618 | io_blocktime = interval; |
|
|
1619 | } |
|
|
1620 | |
|
|
1621 | void |
|
|
1622 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1623 | { |
|
|
1624 | timeout_blocktime = interval; |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | void |
|
|
1628 | ev_set_userdata (EV_P_ void *data) |
|
|
1629 | { |
|
|
1630 | userdata = data; |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | void * |
|
|
1634 | ev_userdata (EV_P) |
|
|
1635 | { |
|
|
1636 | return userdata; |
|
|
1637 | } |
|
|
1638 | |
|
|
1639 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1640 | { |
|
|
1641 | invoke_cb = invoke_pending_cb; |
|
|
1642 | } |
|
|
1643 | |
|
|
1644 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1645 | { |
|
|
1646 | release_cb = release; |
|
|
1647 | acquire_cb = acquire; |
|
|
1648 | } |
|
|
1649 | #endif |
|
|
1650 | |
|
|
1651 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1652 | static void noinline |
|
|
1653 | loop_init (EV_P_ unsigned int flags) |
|
|
1654 | { |
|
|
1655 | if (!backend) |
552 | { |
1656 | { |
|
|
1657 | origflags = flags; |
|
|
1658 | |
|
|
1659 | #if EV_USE_REALTIME |
|
|
1660 | if (!have_realtime) |
|
|
1661 | { |
|
|
1662 | struct timespec ts; |
|
|
1663 | |
|
|
1664 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1665 | have_realtime = 1; |
|
|
1666 | } |
|
|
1667 | #endif |
|
|
1668 | |
553 | #if EV_USE_MONOTONIC |
1669 | #if EV_USE_MONOTONIC |
|
|
1670 | if (!have_monotonic) |
|
|
1671 | { |
|
|
1672 | struct timespec ts; |
|
|
1673 | |
|
|
1674 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1675 | have_monotonic = 1; |
|
|
1676 | } |
|
|
1677 | #endif |
|
|
1678 | |
|
|
1679 | /* pid check not overridable via env */ |
|
|
1680 | #ifndef _WIN32 |
|
|
1681 | if (flags & EVFLAG_FORKCHECK) |
|
|
1682 | curpid = getpid (); |
|
|
1683 | #endif |
|
|
1684 | |
|
|
1685 | if (!(flags & EVFLAG_NOENV) |
|
|
1686 | && !enable_secure () |
|
|
1687 | && getenv ("LIBEV_FLAGS")) |
|
|
1688 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1689 | |
|
|
1690 | ev_rt_now = ev_time (); |
|
|
1691 | mn_now = get_clock (); |
|
|
1692 | now_floor = mn_now; |
|
|
1693 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1694 | #if EV_FEATURE_API |
|
|
1695 | invoke_cb = ev_invoke_pending; |
|
|
1696 | #endif |
|
|
1697 | |
|
|
1698 | io_blocktime = 0.; |
|
|
1699 | timeout_blocktime = 0.; |
|
|
1700 | backend = 0; |
|
|
1701 | backend_fd = -1; |
|
|
1702 | sig_pending = 0; |
|
|
1703 | #if EV_ASYNC_ENABLE |
|
|
1704 | async_pending = 0; |
|
|
1705 | #endif |
|
|
1706 | #if EV_USE_INOTIFY |
|
|
1707 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1708 | #endif |
|
|
1709 | #if EV_USE_SIGNALFD |
|
|
1710 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
1711 | #endif |
|
|
1712 | |
|
|
1713 | if (!(flags & EVBACKEND_MASK)) |
|
|
1714 | flags |= ev_recommended_backends (); |
|
|
1715 | |
|
|
1716 | #if EV_USE_IOCP |
|
|
1717 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1718 | #endif |
|
|
1719 | #if EV_USE_PORT |
|
|
1720 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1721 | #endif |
|
|
1722 | #if EV_USE_KQUEUE |
|
|
1723 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1724 | #endif |
|
|
1725 | #if EV_USE_EPOLL |
|
|
1726 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1727 | #endif |
|
|
1728 | #if EV_USE_POLL |
|
|
1729 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1730 | #endif |
|
|
1731 | #if EV_USE_SELECT |
|
|
1732 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1733 | #endif |
|
|
1734 | |
|
|
1735 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1736 | |
|
|
1737 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1738 | ev_init (&pipe_w, pipecb); |
|
|
1739 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1740 | #endif |
|
|
1741 | } |
|
|
1742 | } |
|
|
1743 | |
|
|
1744 | /* free up a loop structure */ |
|
|
1745 | void |
|
|
1746 | ev_loop_destroy (EV_P) |
|
|
1747 | { |
|
|
1748 | int i; |
|
|
1749 | |
|
|
1750 | #if EV_MULTIPLICITY |
|
|
1751 | /* mimic free (0) */ |
|
|
1752 | if (!EV_A) |
|
|
1753 | return; |
|
|
1754 | #endif |
|
|
1755 | |
|
|
1756 | #if EV_CLEANUP_ENABLE |
|
|
1757 | /* queue cleanup watchers (and execute them) */ |
|
|
1758 | if (expect_false (cleanupcnt)) |
|
|
1759 | { |
|
|
1760 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1761 | EV_INVOKE_PENDING; |
|
|
1762 | } |
|
|
1763 | #endif |
|
|
1764 | |
|
|
1765 | #if EV_CHILD_ENABLE |
|
|
1766 | if (ev_is_active (&childev)) |
|
|
1767 | { |
|
|
1768 | ev_ref (EV_A); /* child watcher */ |
|
|
1769 | ev_signal_stop (EV_A_ &childev); |
|
|
1770 | } |
|
|
1771 | #endif |
|
|
1772 | |
|
|
1773 | if (ev_is_active (&pipe_w)) |
|
|
1774 | { |
|
|
1775 | /*ev_ref (EV_A);*/ |
|
|
1776 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1777 | |
|
|
1778 | #if EV_USE_EVENTFD |
|
|
1779 | if (evfd >= 0) |
|
|
1780 | close (evfd); |
|
|
1781 | #endif |
|
|
1782 | |
|
|
1783 | if (evpipe [0] >= 0) |
|
|
1784 | { |
|
|
1785 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1786 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1787 | } |
|
|
1788 | } |
|
|
1789 | |
|
|
1790 | #if EV_USE_SIGNALFD |
|
|
1791 | if (ev_is_active (&sigfd_w)) |
|
|
1792 | close (sigfd); |
|
|
1793 | #endif |
|
|
1794 | |
|
|
1795 | #if EV_USE_INOTIFY |
|
|
1796 | if (fs_fd >= 0) |
|
|
1797 | close (fs_fd); |
|
|
1798 | #endif |
|
|
1799 | |
|
|
1800 | if (backend_fd >= 0) |
|
|
1801 | close (backend_fd); |
|
|
1802 | |
|
|
1803 | #if EV_USE_IOCP |
|
|
1804 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1805 | #endif |
|
|
1806 | #if EV_USE_PORT |
|
|
1807 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1808 | #endif |
|
|
1809 | #if EV_USE_KQUEUE |
|
|
1810 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1811 | #endif |
|
|
1812 | #if EV_USE_EPOLL |
|
|
1813 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1814 | #endif |
|
|
1815 | #if EV_USE_POLL |
|
|
1816 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1817 | #endif |
|
|
1818 | #if EV_USE_SELECT |
|
|
1819 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1820 | #endif |
|
|
1821 | |
|
|
1822 | for (i = NUMPRI; i--; ) |
|
|
1823 | { |
|
|
1824 | array_free (pending, [i]); |
|
|
1825 | #if EV_IDLE_ENABLE |
|
|
1826 | array_free (idle, [i]); |
|
|
1827 | #endif |
|
|
1828 | } |
|
|
1829 | |
|
|
1830 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
1831 | |
|
|
1832 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1833 | array_free (rfeed, EMPTY); |
|
|
1834 | array_free (fdchange, EMPTY); |
|
|
1835 | array_free (timer, EMPTY); |
|
|
1836 | #if EV_PERIODIC_ENABLE |
|
|
1837 | array_free (periodic, EMPTY); |
|
|
1838 | #endif |
|
|
1839 | #if EV_FORK_ENABLE |
|
|
1840 | array_free (fork, EMPTY); |
|
|
1841 | #endif |
|
|
1842 | #if EV_CLEANUP_ENABLE |
|
|
1843 | array_free (cleanup, EMPTY); |
|
|
1844 | #endif |
|
|
1845 | array_free (prepare, EMPTY); |
|
|
1846 | array_free (check, EMPTY); |
|
|
1847 | #if EV_ASYNC_ENABLE |
|
|
1848 | array_free (async, EMPTY); |
|
|
1849 | #endif |
|
|
1850 | |
|
|
1851 | backend = 0; |
|
|
1852 | |
|
|
1853 | #if EV_MULTIPLICITY |
|
|
1854 | if (ev_is_default_loop (EV_A)) |
|
|
1855 | #endif |
|
|
1856 | ev_default_loop_ptr = 0; |
|
|
1857 | #if EV_MULTIPLICITY |
|
|
1858 | else |
|
|
1859 | ev_free (EV_A); |
|
|
1860 | #endif |
|
|
1861 | } |
|
|
1862 | |
|
|
1863 | #if EV_USE_INOTIFY |
|
|
1864 | inline_size void infy_fork (EV_P); |
|
|
1865 | #endif |
|
|
1866 | |
|
|
1867 | inline_size void |
|
|
1868 | loop_fork (EV_P) |
|
|
1869 | { |
|
|
1870 | #if EV_USE_PORT |
|
|
1871 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1872 | #endif |
|
|
1873 | #if EV_USE_KQUEUE |
|
|
1874 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1875 | #endif |
|
|
1876 | #if EV_USE_EPOLL |
|
|
1877 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1878 | #endif |
|
|
1879 | #if EV_USE_INOTIFY |
|
|
1880 | infy_fork (EV_A); |
|
|
1881 | #endif |
|
|
1882 | |
|
|
1883 | if (ev_is_active (&pipe_w)) |
|
|
1884 | { |
|
|
1885 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1886 | /* while we modify the fd vars */ |
|
|
1887 | sig_pending = 1; |
|
|
1888 | #if EV_ASYNC_ENABLE |
|
|
1889 | async_pending = 1; |
|
|
1890 | #endif |
|
|
1891 | |
|
|
1892 | ev_ref (EV_A); |
|
|
1893 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1894 | |
|
|
1895 | #if EV_USE_EVENTFD |
|
|
1896 | if (evfd >= 0) |
|
|
1897 | close (evfd); |
|
|
1898 | #endif |
|
|
1899 | |
|
|
1900 | if (evpipe [0] >= 0) |
|
|
1901 | { |
|
|
1902 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1903 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1904 | } |
|
|
1905 | |
|
|
1906 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1907 | evpipe_init (EV_A); |
|
|
1908 | /* now iterate over everything, in case we missed something */ |
|
|
1909 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1910 | #endif |
|
|
1911 | } |
|
|
1912 | |
|
|
1913 | postfork = 0; |
|
|
1914 | } |
|
|
1915 | |
|
|
1916 | #if EV_MULTIPLICITY |
|
|
1917 | |
|
|
1918 | struct ev_loop * |
|
|
1919 | ev_loop_new (unsigned int flags) |
|
|
1920 | { |
|
|
1921 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1922 | |
|
|
1923 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
1924 | loop_init (EV_A_ flags); |
|
|
1925 | |
|
|
1926 | if (ev_backend (EV_A)) |
|
|
1927 | return EV_A; |
|
|
1928 | |
|
|
1929 | ev_free (EV_A); |
|
|
1930 | return 0; |
|
|
1931 | } |
|
|
1932 | |
|
|
1933 | #endif /* multiplicity */ |
|
|
1934 | |
|
|
1935 | #if EV_VERIFY |
|
|
1936 | static void noinline |
|
|
1937 | verify_watcher (EV_P_ W w) |
|
|
1938 | { |
|
|
1939 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1940 | |
|
|
1941 | if (w->pending) |
|
|
1942 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1943 | } |
|
|
1944 | |
|
|
1945 | static void noinline |
|
|
1946 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1947 | { |
|
|
1948 | int i; |
|
|
1949 | |
|
|
1950 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1951 | { |
|
|
1952 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1953 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1954 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1955 | |
|
|
1956 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1957 | } |
|
|
1958 | } |
|
|
1959 | |
|
|
1960 | static void noinline |
|
|
1961 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1962 | { |
|
|
1963 | while (cnt--) |
|
|
1964 | { |
|
|
1965 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1966 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1967 | } |
|
|
1968 | } |
|
|
1969 | #endif |
|
|
1970 | |
|
|
1971 | #if EV_FEATURE_API |
|
|
1972 | void |
|
|
1973 | ev_verify (EV_P) |
|
|
1974 | { |
|
|
1975 | #if EV_VERIFY |
|
|
1976 | int i; |
|
|
1977 | WL w; |
|
|
1978 | |
|
|
1979 | assert (activecnt >= -1); |
|
|
1980 | |
|
|
1981 | assert (fdchangemax >= fdchangecnt); |
|
|
1982 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1983 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1984 | |
|
|
1985 | assert (anfdmax >= 0); |
|
|
1986 | for (i = 0; i < anfdmax; ++i) |
|
|
1987 | for (w = anfds [i].head; w; w = w->next) |
554 | { |
1988 | { |
555 | struct timespec ts; |
1989 | verify_watcher (EV_A_ (W)w); |
556 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1990 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
557 | have_monotonic = 1; |
1991 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
558 | } |
1992 | } |
|
|
1993 | |
|
|
1994 | assert (timermax >= timercnt); |
|
|
1995 | verify_heap (EV_A_ timers, timercnt); |
|
|
1996 | |
|
|
1997 | #if EV_PERIODIC_ENABLE |
|
|
1998 | assert (periodicmax >= periodiccnt); |
|
|
1999 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2000 | #endif |
|
|
2001 | |
|
|
2002 | for (i = NUMPRI; i--; ) |
|
|
2003 | { |
|
|
2004 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2005 | #if EV_IDLE_ENABLE |
|
|
2006 | assert (idleall >= 0); |
|
|
2007 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2008 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2009 | #endif |
|
|
2010 | } |
|
|
2011 | |
|
|
2012 | #if EV_FORK_ENABLE |
|
|
2013 | assert (forkmax >= forkcnt); |
|
|
2014 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2015 | #endif |
|
|
2016 | |
|
|
2017 | #if EV_CLEANUP_ENABLE |
|
|
2018 | assert (cleanupmax >= cleanupcnt); |
|
|
2019 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2020 | #endif |
|
|
2021 | |
|
|
2022 | #if EV_ASYNC_ENABLE |
|
|
2023 | assert (asyncmax >= asynccnt); |
|
|
2024 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2025 | #endif |
|
|
2026 | |
|
|
2027 | #if EV_PREPARE_ENABLE |
|
|
2028 | assert (preparemax >= preparecnt); |
|
|
2029 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2030 | #endif |
|
|
2031 | |
|
|
2032 | #if EV_CHECK_ENABLE |
|
|
2033 | assert (checkmax >= checkcnt); |
|
|
2034 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2035 | #endif |
|
|
2036 | |
|
|
2037 | # if 0 |
|
|
2038 | #if EV_CHILD_ENABLE |
|
|
2039 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2040 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2041 | #endif |
559 | #endif |
2042 | # endif |
560 | |
|
|
561 | ev_now = ev_time (); |
|
|
562 | now = get_clock (); |
|
|
563 | now_floor = now; |
|
|
564 | diff = ev_now - now; |
|
|
565 | |
|
|
566 | if (pipe (sigpipe)) |
|
|
567 | return 0; |
|
|
568 | |
|
|
569 | if (methods == EVMETHOD_AUTO) |
|
|
570 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
571 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
572 | else |
|
|
573 | methods = EVMETHOD_ANY; |
|
|
574 | |
|
|
575 | ev_method = 0; |
|
|
576 | #if EV_USE_KQUEUE |
|
|
577 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
578 | #endif |
2043 | #endif |
579 | #if EV_USE_EPOLL |
2044 | } |
580 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
581 | #endif |
2045 | #endif |
582 | #if EV_USE_POLL |
|
|
583 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
584 | #endif |
|
|
585 | #if EV_USE_SELECT |
|
|
586 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
587 | #endif |
|
|
588 | |
2046 | |
589 | if (ev_method) |
2047 | #if EV_MULTIPLICITY |
|
|
2048 | struct ev_loop * |
|
|
2049 | #else |
|
|
2050 | int |
|
|
2051 | #endif |
|
|
2052 | ev_default_loop (unsigned int flags) |
|
|
2053 | { |
|
|
2054 | if (!ev_default_loop_ptr) |
|
|
2055 | { |
|
|
2056 | #if EV_MULTIPLICITY |
|
|
2057 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
2058 | #else |
|
|
2059 | ev_default_loop_ptr = 1; |
|
|
2060 | #endif |
|
|
2061 | |
|
|
2062 | loop_init (EV_A_ flags); |
|
|
2063 | |
|
|
2064 | if (ev_backend (EV_A)) |
590 | { |
2065 | { |
591 | ev_watcher_init (&sigev, sigcb); |
2066 | #if EV_CHILD_ENABLE |
592 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
593 | siginit (); |
|
|
594 | |
|
|
595 | #ifndef WIN32 |
|
|
596 | ev_signal_init (&childev, childcb, SIGCHLD); |
2067 | ev_signal_init (&childev, childcb, SIGCHLD); |
597 | ev_set_priority (&childev, EV_MAXPRI); |
2068 | ev_set_priority (&childev, EV_MAXPRI); |
598 | ev_signal_start (&childev); |
2069 | ev_signal_start (EV_A_ &childev); |
|
|
2070 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
599 | #endif |
2071 | #endif |
600 | } |
2072 | } |
|
|
2073 | else |
|
|
2074 | ev_default_loop_ptr = 0; |
601 | } |
2075 | } |
602 | |
2076 | |
603 | return ev_method; |
2077 | return ev_default_loop_ptr; |
|
|
2078 | } |
|
|
2079 | |
|
|
2080 | void |
|
|
2081 | ev_loop_fork (EV_P) |
|
|
2082 | { |
|
|
2083 | postfork = 1; /* must be in line with ev_default_fork */ |
604 | } |
2084 | } |
605 | |
2085 | |
606 | /*****************************************************************************/ |
2086 | /*****************************************************************************/ |
607 | |
2087 | |
608 | void |
2088 | void |
609 | ev_fork_prepare (void) |
2089 | ev_invoke (EV_P_ void *w, int revents) |
610 | { |
2090 | { |
611 | /* nop */ |
2091 | EV_CB_INVOKE ((W)w, revents); |
612 | } |
2092 | } |
613 | |
2093 | |
614 | void |
2094 | unsigned int |
615 | ev_fork_parent (void) |
2095 | ev_pending_count (EV_P) |
616 | { |
2096 | { |
617 | /* nop */ |
2097 | int pri; |
618 | } |
2098 | unsigned int count = 0; |
619 | |
2099 | |
620 | void |
2100 | for (pri = NUMPRI; pri--; ) |
621 | ev_fork_child (void) |
2101 | count += pendingcnt [pri]; |
622 | { |
|
|
623 | #if EV_USE_EPOLL |
|
|
624 | if (ev_method == EVMETHOD_EPOLL) |
|
|
625 | epoll_postfork_child (); |
|
|
626 | #endif |
|
|
627 | |
2102 | |
628 | ev_io_stop (&sigev); |
2103 | return count; |
629 | close (sigpipe [0]); |
|
|
630 | close (sigpipe [1]); |
|
|
631 | pipe (sigpipe); |
|
|
632 | siginit (); |
|
|
633 | } |
2104 | } |
634 | |
2105 | |
635 | /*****************************************************************************/ |
2106 | void noinline |
636 | |
2107 | ev_invoke_pending (EV_P) |
637 | static void |
|
|
638 | call_pending (void) |
|
|
639 | { |
2108 | { |
640 | int pri; |
2109 | int pri; |
641 | |
2110 | |
642 | for (pri = NUMPRI; pri--; ) |
2111 | for (pri = NUMPRI; pri--; ) |
643 | while (pendingcnt [pri]) |
2112 | while (pendingcnt [pri]) |
644 | { |
2113 | { |
645 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2114 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
646 | |
2115 | |
647 | if (p->w) |
2116 | p->w->pending = 0; |
|
|
2117 | EV_CB_INVOKE (p->w, p->events); |
|
|
2118 | EV_FREQUENT_CHECK; |
|
|
2119 | } |
|
|
2120 | } |
|
|
2121 | |
|
|
2122 | #if EV_IDLE_ENABLE |
|
|
2123 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2124 | /* only when higher priorities are idle" logic */ |
|
|
2125 | inline_size void |
|
|
2126 | idle_reify (EV_P) |
|
|
2127 | { |
|
|
2128 | if (expect_false (idleall)) |
|
|
2129 | { |
|
|
2130 | int pri; |
|
|
2131 | |
|
|
2132 | for (pri = NUMPRI; pri--; ) |
|
|
2133 | { |
|
|
2134 | if (pendingcnt [pri]) |
|
|
2135 | break; |
|
|
2136 | |
|
|
2137 | if (idlecnt [pri]) |
|
|
2138 | { |
|
|
2139 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2140 | break; |
|
|
2141 | } |
|
|
2142 | } |
|
|
2143 | } |
|
|
2144 | } |
|
|
2145 | #endif |
|
|
2146 | |
|
|
2147 | /* make timers pending */ |
|
|
2148 | inline_size void |
|
|
2149 | timers_reify (EV_P) |
|
|
2150 | { |
|
|
2151 | EV_FREQUENT_CHECK; |
|
|
2152 | |
|
|
2153 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
2154 | { |
|
|
2155 | do |
|
|
2156 | { |
|
|
2157 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2158 | |
|
|
2159 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2160 | |
|
|
2161 | /* first reschedule or stop timer */ |
|
|
2162 | if (w->repeat) |
|
|
2163 | { |
|
|
2164 | ev_at (w) += w->repeat; |
|
|
2165 | if (ev_at (w) < mn_now) |
|
|
2166 | ev_at (w) = mn_now; |
|
|
2167 | |
|
|
2168 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
2169 | |
|
|
2170 | ANHE_at_cache (timers [HEAP0]); |
|
|
2171 | downheap (timers, timercnt, HEAP0); |
|
|
2172 | } |
|
|
2173 | else |
|
|
2174 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2175 | |
|
|
2176 | EV_FREQUENT_CHECK; |
|
|
2177 | feed_reverse (EV_A_ (W)w); |
|
|
2178 | } |
|
|
2179 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
2180 | |
|
|
2181 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
2182 | } |
|
|
2183 | } |
|
|
2184 | |
|
|
2185 | #if EV_PERIODIC_ENABLE |
|
|
2186 | /* make periodics pending */ |
|
|
2187 | inline_size void |
|
|
2188 | periodics_reify (EV_P) |
|
|
2189 | { |
|
|
2190 | EV_FREQUENT_CHECK; |
|
|
2191 | |
|
|
2192 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
2193 | { |
|
|
2194 | int feed_count = 0; |
|
|
2195 | |
|
|
2196 | do |
|
|
2197 | { |
|
|
2198 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2199 | |
|
|
2200 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
2201 | |
|
|
2202 | /* first reschedule or stop timer */ |
|
|
2203 | if (w->reschedule_cb) |
|
|
2204 | { |
|
|
2205 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2206 | |
|
|
2207 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2208 | |
|
|
2209 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2210 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2211 | } |
|
|
2212 | else if (w->interval) |
|
|
2213 | { |
|
|
2214 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2215 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2216 | /* this might happen because of floating point inexactness */ |
|
|
2217 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2218 | { |
|
|
2219 | ev_at (w) += w->interval; |
|
|
2220 | |
|
|
2221 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2222 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2223 | /* has effectively asked to get triggered more often than possible */ |
|
|
2224 | if (ev_at (w) < ev_rt_now) |
|
|
2225 | ev_at (w) = ev_rt_now; |
|
|
2226 | } |
|
|
2227 | |
|
|
2228 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2229 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2230 | } |
|
|
2231 | else |
|
|
2232 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2233 | |
|
|
2234 | EV_FREQUENT_CHECK; |
|
|
2235 | feed_reverse (EV_A_ (W)w); |
|
|
2236 | } |
|
|
2237 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2238 | |
|
|
2239 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2240 | } |
|
|
2241 | } |
|
|
2242 | |
|
|
2243 | /* simply recalculate all periodics */ |
|
|
2244 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
2245 | static void noinline |
|
|
2246 | periodics_reschedule (EV_P) |
|
|
2247 | { |
|
|
2248 | int i; |
|
|
2249 | |
|
|
2250 | /* adjust periodics after time jump */ |
|
|
2251 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2252 | { |
|
|
2253 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2254 | |
|
|
2255 | if (w->reschedule_cb) |
|
|
2256 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2257 | else if (w->interval) |
|
|
2258 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2259 | |
|
|
2260 | ANHE_at_cache (periodics [i]); |
|
|
2261 | } |
|
|
2262 | |
|
|
2263 | reheap (periodics, periodiccnt); |
|
|
2264 | } |
|
|
2265 | #endif |
|
|
2266 | |
|
|
2267 | /* adjust all timers by a given offset */ |
|
|
2268 | static void noinline |
|
|
2269 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2270 | { |
|
|
2271 | int i; |
|
|
2272 | |
|
|
2273 | for (i = 0; i < timercnt; ++i) |
|
|
2274 | { |
|
|
2275 | ANHE *he = timers + i + HEAP0; |
|
|
2276 | ANHE_w (*he)->at += adjust; |
|
|
2277 | ANHE_at_cache (*he); |
|
|
2278 | } |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2282 | /* also detect if there was a timejump, and act accordingly */ |
|
|
2283 | inline_speed void |
|
|
2284 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2285 | { |
|
|
2286 | #if EV_USE_MONOTONIC |
|
|
2287 | if (expect_true (have_monotonic)) |
|
|
2288 | { |
|
|
2289 | int i; |
|
|
2290 | ev_tstamp odiff = rtmn_diff; |
|
|
2291 | |
|
|
2292 | mn_now = get_clock (); |
|
|
2293 | |
|
|
2294 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2295 | /* interpolate in the meantime */ |
|
|
2296 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
2297 | { |
|
|
2298 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2299 | return; |
|
|
2300 | } |
|
|
2301 | |
|
|
2302 | now_floor = mn_now; |
|
|
2303 | ev_rt_now = ev_time (); |
|
|
2304 | |
|
|
2305 | /* loop a few times, before making important decisions. |
|
|
2306 | * on the choice of "4": one iteration isn't enough, |
|
|
2307 | * in case we get preempted during the calls to |
|
|
2308 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2309 | * to succeed in that case, though. and looping a few more times |
|
|
2310 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2311 | * in the unlikely event of having been preempted here. |
|
|
2312 | */ |
|
|
2313 | for (i = 4; --i; ) |
|
|
2314 | { |
|
|
2315 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2316 | |
|
|
2317 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
2318 | return; /* all is well */ |
|
|
2319 | |
|
|
2320 | ev_rt_now = ev_time (); |
|
|
2321 | mn_now = get_clock (); |
|
|
2322 | now_floor = mn_now; |
|
|
2323 | } |
|
|
2324 | |
|
|
2325 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2326 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2327 | # if EV_PERIODIC_ENABLE |
|
|
2328 | periodics_reschedule (EV_A); |
|
|
2329 | # endif |
|
|
2330 | } |
|
|
2331 | else |
|
|
2332 | #endif |
|
|
2333 | { |
|
|
2334 | ev_rt_now = ev_time (); |
|
|
2335 | |
|
|
2336 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2337 | { |
|
|
2338 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2339 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2340 | #if EV_PERIODIC_ENABLE |
|
|
2341 | periodics_reschedule (EV_A); |
|
|
2342 | #endif |
|
|
2343 | } |
|
|
2344 | |
|
|
2345 | mn_now = ev_rt_now; |
|
|
2346 | } |
|
|
2347 | } |
|
|
2348 | |
|
|
2349 | void |
|
|
2350 | ev_run (EV_P_ int flags) |
|
|
2351 | { |
|
|
2352 | #if EV_FEATURE_API |
|
|
2353 | ++loop_depth; |
|
|
2354 | #endif |
|
|
2355 | |
|
|
2356 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
2357 | |
|
|
2358 | loop_done = EVBREAK_CANCEL; |
|
|
2359 | |
|
|
2360 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
2361 | |
|
|
2362 | do |
|
|
2363 | { |
|
|
2364 | #if EV_VERIFY >= 2 |
|
|
2365 | ev_verify (EV_A); |
|
|
2366 | #endif |
|
|
2367 | |
|
|
2368 | #ifndef _WIN32 |
|
|
2369 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2370 | if (expect_false (getpid () != curpid)) |
648 | { |
2371 | { |
649 | p->w->pending = 0; |
2372 | curpid = getpid (); |
650 | p->w->cb (p->w, p->events); |
2373 | postfork = 1; |
651 | } |
2374 | } |
|
|
2375 | #endif |
|
|
2376 | |
|
|
2377 | #if EV_FORK_ENABLE |
|
|
2378 | /* we might have forked, so queue fork handlers */ |
|
|
2379 | if (expect_false (postfork)) |
|
|
2380 | if (forkcnt) |
|
|
2381 | { |
|
|
2382 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2383 | EV_INVOKE_PENDING; |
|
|
2384 | } |
|
|
2385 | #endif |
|
|
2386 | |
|
|
2387 | #if EV_PREPARE_ENABLE |
|
|
2388 | /* queue prepare watchers (and execute them) */ |
|
|
2389 | if (expect_false (preparecnt)) |
|
|
2390 | { |
|
|
2391 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
2392 | EV_INVOKE_PENDING; |
|
|
2393 | } |
|
|
2394 | #endif |
|
|
2395 | |
|
|
2396 | if (expect_false (loop_done)) |
|
|
2397 | break; |
|
|
2398 | |
|
|
2399 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2400 | if (expect_false (postfork)) |
|
|
2401 | loop_fork (EV_A); |
|
|
2402 | |
|
|
2403 | /* update fd-related kernel structures */ |
|
|
2404 | fd_reify (EV_A); |
|
|
2405 | |
|
|
2406 | /* calculate blocking time */ |
|
|
2407 | { |
|
|
2408 | ev_tstamp waittime = 0.; |
|
|
2409 | ev_tstamp sleeptime = 0.; |
|
|
2410 | |
|
|
2411 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2412 | ev_tstamp prev_mn_now = mn_now; |
|
|
2413 | |
|
|
2414 | /* update time to cancel out callback processing overhead */ |
|
|
2415 | time_update (EV_A_ 1e100); |
|
|
2416 | |
|
|
2417 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
|
|
2418 | { |
|
|
2419 | waittime = MAX_BLOCKTIME; |
|
|
2420 | |
|
|
2421 | if (timercnt) |
|
|
2422 | { |
|
|
2423 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
|
|
2424 | if (waittime > to) waittime = to; |
|
|
2425 | } |
|
|
2426 | |
|
|
2427 | #if EV_PERIODIC_ENABLE |
|
|
2428 | if (periodiccnt) |
|
|
2429 | { |
|
|
2430 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
|
|
2431 | if (waittime > to) waittime = to; |
|
|
2432 | } |
|
|
2433 | #endif |
|
|
2434 | |
|
|
2435 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2436 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2437 | waittime = timeout_blocktime; |
|
|
2438 | |
|
|
2439 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2440 | if (expect_false (io_blocktime)) |
|
|
2441 | { |
|
|
2442 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2443 | |
|
|
2444 | if (sleeptime > waittime - backend_fudge) |
|
|
2445 | sleeptime = waittime - backend_fudge; |
|
|
2446 | |
|
|
2447 | if (expect_true (sleeptime > 0.)) |
|
|
2448 | { |
|
|
2449 | ev_sleep (sleeptime); |
|
|
2450 | waittime -= sleeptime; |
|
|
2451 | } |
|
|
2452 | } |
|
|
2453 | } |
|
|
2454 | |
|
|
2455 | #if EV_FEATURE_API |
|
|
2456 | ++loop_count; |
|
|
2457 | #endif |
|
|
2458 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
2459 | backend_poll (EV_A_ waittime); |
|
|
2460 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2461 | |
|
|
2462 | /* update ev_rt_now, do magic */ |
|
|
2463 | time_update (EV_A_ waittime + sleeptime); |
652 | } |
2464 | } |
653 | } |
|
|
654 | |
2465 | |
655 | static void |
2466 | /* queue pending timers and reschedule them */ |
656 | timers_reify (void) |
2467 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2468 | #if EV_PERIODIC_ENABLE |
|
|
2469 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2470 | #endif |
|
|
2471 | |
|
|
2472 | #if EV_IDLE_ENABLE |
|
|
2473 | /* queue idle watchers unless other events are pending */ |
|
|
2474 | idle_reify (EV_A); |
|
|
2475 | #endif |
|
|
2476 | |
|
|
2477 | #if EV_CHECK_ENABLE |
|
|
2478 | /* queue check watchers, to be executed first */ |
|
|
2479 | if (expect_false (checkcnt)) |
|
|
2480 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
2481 | #endif |
|
|
2482 | |
|
|
2483 | EV_INVOKE_PENDING; |
|
|
2484 | } |
|
|
2485 | while (expect_true ( |
|
|
2486 | activecnt |
|
|
2487 | && !loop_done |
|
|
2488 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
2489 | )); |
|
|
2490 | |
|
|
2491 | if (loop_done == EVBREAK_ONE) |
|
|
2492 | loop_done = EVBREAK_CANCEL; |
|
|
2493 | |
|
|
2494 | #if EV_FEATURE_API |
|
|
2495 | --loop_depth; |
|
|
2496 | #endif |
|
|
2497 | } |
|
|
2498 | |
|
|
2499 | void |
|
|
2500 | ev_break (EV_P_ int how) |
657 | { |
2501 | { |
658 | while (timercnt && timers [0]->at <= now) |
2502 | loop_done = how; |
|
|
2503 | } |
|
|
2504 | |
|
|
2505 | void |
|
|
2506 | ev_ref (EV_P) |
|
|
2507 | { |
|
|
2508 | ++activecnt; |
|
|
2509 | } |
|
|
2510 | |
|
|
2511 | void |
|
|
2512 | ev_unref (EV_P) |
|
|
2513 | { |
|
|
2514 | --activecnt; |
|
|
2515 | } |
|
|
2516 | |
|
|
2517 | void |
|
|
2518 | ev_now_update (EV_P) |
|
|
2519 | { |
|
|
2520 | time_update (EV_A_ 1e100); |
|
|
2521 | } |
|
|
2522 | |
|
|
2523 | void |
|
|
2524 | ev_suspend (EV_P) |
|
|
2525 | { |
|
|
2526 | ev_now_update (EV_A); |
|
|
2527 | } |
|
|
2528 | |
|
|
2529 | void |
|
|
2530 | ev_resume (EV_P) |
|
|
2531 | { |
|
|
2532 | ev_tstamp mn_prev = mn_now; |
|
|
2533 | |
|
|
2534 | ev_now_update (EV_A); |
|
|
2535 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2536 | #if EV_PERIODIC_ENABLE |
|
|
2537 | /* TODO: really do this? */ |
|
|
2538 | periodics_reschedule (EV_A); |
|
|
2539 | #endif |
|
|
2540 | } |
|
|
2541 | |
|
|
2542 | /*****************************************************************************/ |
|
|
2543 | /* singly-linked list management, used when the expected list length is short */ |
|
|
2544 | |
|
|
2545 | inline_size void |
|
|
2546 | wlist_add (WL *head, WL elem) |
|
|
2547 | { |
|
|
2548 | elem->next = *head; |
|
|
2549 | *head = elem; |
|
|
2550 | } |
|
|
2551 | |
|
|
2552 | inline_size void |
|
|
2553 | wlist_del (WL *head, WL elem) |
|
|
2554 | { |
|
|
2555 | while (*head) |
|
|
2556 | { |
|
|
2557 | if (expect_true (*head == elem)) |
|
|
2558 | { |
|
|
2559 | *head = elem->next; |
|
|
2560 | break; |
|
|
2561 | } |
|
|
2562 | |
|
|
2563 | head = &(*head)->next; |
|
|
2564 | } |
|
|
2565 | } |
|
|
2566 | |
|
|
2567 | /* internal, faster, version of ev_clear_pending */ |
|
|
2568 | inline_speed void |
|
|
2569 | clear_pending (EV_P_ W w) |
|
|
2570 | { |
|
|
2571 | if (w->pending) |
|
|
2572 | { |
|
|
2573 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
2574 | w->pending = 0; |
|
|
2575 | } |
|
|
2576 | } |
|
|
2577 | |
|
|
2578 | int |
|
|
2579 | ev_clear_pending (EV_P_ void *w) |
|
|
2580 | { |
|
|
2581 | W w_ = (W)w; |
|
|
2582 | int pending = w_->pending; |
|
|
2583 | |
|
|
2584 | if (expect_true (pending)) |
|
|
2585 | { |
|
|
2586 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2587 | p->w = (W)&pending_w; |
|
|
2588 | w_->pending = 0; |
|
|
2589 | return p->events; |
|
|
2590 | } |
|
|
2591 | else |
|
|
2592 | return 0; |
|
|
2593 | } |
|
|
2594 | |
|
|
2595 | inline_size void |
|
|
2596 | pri_adjust (EV_P_ W w) |
|
|
2597 | { |
|
|
2598 | int pri = ev_priority (w); |
|
|
2599 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2600 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2601 | ev_set_priority (w, pri); |
|
|
2602 | } |
|
|
2603 | |
|
|
2604 | inline_speed void |
|
|
2605 | ev_start (EV_P_ W w, int active) |
|
|
2606 | { |
|
|
2607 | pri_adjust (EV_A_ w); |
|
|
2608 | w->active = active; |
|
|
2609 | ev_ref (EV_A); |
|
|
2610 | } |
|
|
2611 | |
|
|
2612 | inline_size void |
|
|
2613 | ev_stop (EV_P_ W w) |
|
|
2614 | { |
|
|
2615 | ev_unref (EV_A); |
|
|
2616 | w->active = 0; |
|
|
2617 | } |
|
|
2618 | |
|
|
2619 | /*****************************************************************************/ |
|
|
2620 | |
|
|
2621 | void noinline |
|
|
2622 | ev_io_start (EV_P_ ev_io *w) |
|
|
2623 | { |
|
|
2624 | int fd = w->fd; |
|
|
2625 | |
|
|
2626 | if (expect_false (ev_is_active (w))) |
|
|
2627 | return; |
|
|
2628 | |
|
|
2629 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2630 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2631 | |
|
|
2632 | EV_FREQUENT_CHECK; |
|
|
2633 | |
|
|
2634 | ev_start (EV_A_ (W)w, 1); |
|
|
2635 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
2636 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
2637 | |
|
|
2638 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
2639 | w->events &= ~EV__IOFDSET; |
|
|
2640 | |
|
|
2641 | EV_FREQUENT_CHECK; |
|
|
2642 | } |
|
|
2643 | |
|
|
2644 | void noinline |
|
|
2645 | ev_io_stop (EV_P_ ev_io *w) |
|
|
2646 | { |
|
|
2647 | clear_pending (EV_A_ (W)w); |
|
|
2648 | if (expect_false (!ev_is_active (w))) |
|
|
2649 | return; |
|
|
2650 | |
|
|
2651 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2652 | |
|
|
2653 | EV_FREQUENT_CHECK; |
|
|
2654 | |
|
|
2655 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
2656 | ev_stop (EV_A_ (W)w); |
|
|
2657 | |
|
|
2658 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
2659 | |
|
|
2660 | EV_FREQUENT_CHECK; |
|
|
2661 | } |
|
|
2662 | |
|
|
2663 | void noinline |
|
|
2664 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
2665 | { |
|
|
2666 | if (expect_false (ev_is_active (w))) |
|
|
2667 | return; |
|
|
2668 | |
|
|
2669 | ev_at (w) += mn_now; |
|
|
2670 | |
|
|
2671 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
2672 | |
|
|
2673 | EV_FREQUENT_CHECK; |
|
|
2674 | |
|
|
2675 | ++timercnt; |
|
|
2676 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2677 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2678 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2679 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2680 | upheap (timers, ev_active (w)); |
|
|
2681 | |
|
|
2682 | EV_FREQUENT_CHECK; |
|
|
2683 | |
|
|
2684 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2685 | } |
|
|
2686 | |
|
|
2687 | void noinline |
|
|
2688 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
2689 | { |
|
|
2690 | clear_pending (EV_A_ (W)w); |
|
|
2691 | if (expect_false (!ev_is_active (w))) |
|
|
2692 | return; |
|
|
2693 | |
|
|
2694 | EV_FREQUENT_CHECK; |
|
|
2695 | |
|
|
2696 | { |
|
|
2697 | int active = ev_active (w); |
|
|
2698 | |
|
|
2699 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2700 | |
|
|
2701 | --timercnt; |
|
|
2702 | |
|
|
2703 | if (expect_true (active < timercnt + HEAP0)) |
659 | { |
2704 | { |
660 | struct ev_timer *w = timers [0]; |
2705 | timers [active] = timers [timercnt + HEAP0]; |
|
|
2706 | adjustheap (timers, timercnt, active); |
|
|
2707 | } |
|
|
2708 | } |
661 | |
2709 | |
662 | /* first reschedule or stop timer */ |
2710 | ev_at (w) -= mn_now; |
|
|
2711 | |
|
|
2712 | ev_stop (EV_A_ (W)w); |
|
|
2713 | |
|
|
2714 | EV_FREQUENT_CHECK; |
|
|
2715 | } |
|
|
2716 | |
|
|
2717 | void noinline |
|
|
2718 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
2719 | { |
|
|
2720 | EV_FREQUENT_CHECK; |
|
|
2721 | |
|
|
2722 | if (ev_is_active (w)) |
|
|
2723 | { |
663 | if (w->repeat) |
2724 | if (w->repeat) |
664 | { |
2725 | { |
665 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
666 | w->at = now + w->repeat; |
2726 | ev_at (w) = mn_now + w->repeat; |
667 | downheap ((WT *)timers, timercnt, 0); |
2727 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2728 | adjustheap (timers, timercnt, ev_active (w)); |
668 | } |
2729 | } |
669 | else |
2730 | else |
670 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
2731 | ev_timer_stop (EV_A_ w); |
671 | |
|
|
672 | event ((W)w, EV_TIMEOUT); |
|
|
673 | } |
|
|
674 | } |
|
|
675 | |
|
|
676 | static void |
|
|
677 | periodics_reify (void) |
|
|
678 | { |
|
|
679 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
680 | { |
2732 | } |
681 | struct ev_periodic *w = periodics [0]; |
2733 | else if (w->repeat) |
|
|
2734 | { |
|
|
2735 | ev_at (w) = w->repeat; |
|
|
2736 | ev_timer_start (EV_A_ w); |
|
|
2737 | } |
682 | |
2738 | |
683 | /* first reschedule or stop timer */ |
2739 | EV_FREQUENT_CHECK; |
|
|
2740 | } |
|
|
2741 | |
|
|
2742 | ev_tstamp |
|
|
2743 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2744 | { |
|
|
2745 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2746 | } |
|
|
2747 | |
|
|
2748 | #if EV_PERIODIC_ENABLE |
|
|
2749 | void noinline |
|
|
2750 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
2751 | { |
|
|
2752 | if (expect_false (ev_is_active (w))) |
|
|
2753 | return; |
|
|
2754 | |
|
|
2755 | if (w->reschedule_cb) |
|
|
2756 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
684 | if (w->interval) |
2757 | else if (w->interval) |
|
|
2758 | { |
|
|
2759 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
2760 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
2761 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2762 | } |
|
|
2763 | else |
|
|
2764 | ev_at (w) = w->offset; |
|
|
2765 | |
|
|
2766 | EV_FREQUENT_CHECK; |
|
|
2767 | |
|
|
2768 | ++periodiccnt; |
|
|
2769 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
2770 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
|
|
2771 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
2772 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2773 | upheap (periodics, ev_active (w)); |
|
|
2774 | |
|
|
2775 | EV_FREQUENT_CHECK; |
|
|
2776 | |
|
|
2777 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2778 | } |
|
|
2779 | |
|
|
2780 | void noinline |
|
|
2781 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
2782 | { |
|
|
2783 | clear_pending (EV_A_ (W)w); |
|
|
2784 | if (expect_false (!ev_is_active (w))) |
|
|
2785 | return; |
|
|
2786 | |
|
|
2787 | EV_FREQUENT_CHECK; |
|
|
2788 | |
|
|
2789 | { |
|
|
2790 | int active = ev_active (w); |
|
|
2791 | |
|
|
2792 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2793 | |
|
|
2794 | --periodiccnt; |
|
|
2795 | |
|
|
2796 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
2797 | { |
|
|
2798 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
2799 | adjustheap (periodics, periodiccnt, active); |
|
|
2800 | } |
|
|
2801 | } |
|
|
2802 | |
|
|
2803 | ev_stop (EV_A_ (W)w); |
|
|
2804 | |
|
|
2805 | EV_FREQUENT_CHECK; |
|
|
2806 | } |
|
|
2807 | |
|
|
2808 | void noinline |
|
|
2809 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2810 | { |
|
|
2811 | /* TODO: use adjustheap and recalculation */ |
|
|
2812 | ev_periodic_stop (EV_A_ w); |
|
|
2813 | ev_periodic_start (EV_A_ w); |
|
|
2814 | } |
|
|
2815 | #endif |
|
|
2816 | |
|
|
2817 | #ifndef SA_RESTART |
|
|
2818 | # define SA_RESTART 0 |
|
|
2819 | #endif |
|
|
2820 | |
|
|
2821 | #if EV_SIGNAL_ENABLE |
|
|
2822 | |
|
|
2823 | void noinline |
|
|
2824 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
2825 | { |
|
|
2826 | if (expect_false (ev_is_active (w))) |
|
|
2827 | return; |
|
|
2828 | |
|
|
2829 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2830 | |
|
|
2831 | #if EV_MULTIPLICITY |
|
|
2832 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2833 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2834 | |
|
|
2835 | signals [w->signum - 1].loop = EV_A; |
|
|
2836 | #endif |
|
|
2837 | |
|
|
2838 | EV_FREQUENT_CHECK; |
|
|
2839 | |
|
|
2840 | #if EV_USE_SIGNALFD |
|
|
2841 | if (sigfd == -2) |
|
|
2842 | { |
|
|
2843 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2844 | if (sigfd < 0 && errno == EINVAL) |
|
|
2845 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2846 | |
|
|
2847 | if (sigfd >= 0) |
685 | { |
2848 | { |
686 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
2849 | fd_intern (sigfd); /* doing it twice will not hurt */ |
687 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
2850 | |
688 | downheap ((WT *)periodics, periodiccnt, 0); |
2851 | sigemptyset (&sigfd_set); |
|
|
2852 | |
|
|
2853 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2854 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2855 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2856 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2857 | } |
|
|
2858 | } |
|
|
2859 | |
|
|
2860 | if (sigfd >= 0) |
|
|
2861 | { |
|
|
2862 | /* TODO: check .head */ |
|
|
2863 | sigaddset (&sigfd_set, w->signum); |
|
|
2864 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2865 | |
|
|
2866 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2867 | } |
|
|
2868 | #endif |
|
|
2869 | |
|
|
2870 | ev_start (EV_A_ (W)w, 1); |
|
|
2871 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2872 | |
|
|
2873 | if (!((WL)w)->next) |
|
|
2874 | # if EV_USE_SIGNALFD |
|
|
2875 | if (sigfd < 0) /*TODO*/ |
|
|
2876 | # endif |
|
|
2877 | { |
|
|
2878 | # ifdef _WIN32 |
|
|
2879 | evpipe_init (EV_A); |
|
|
2880 | |
|
|
2881 | signal (w->signum, ev_sighandler); |
|
|
2882 | # else |
|
|
2883 | struct sigaction sa; |
|
|
2884 | |
|
|
2885 | evpipe_init (EV_A); |
|
|
2886 | |
|
|
2887 | sa.sa_handler = ev_sighandler; |
|
|
2888 | sigfillset (&sa.sa_mask); |
|
|
2889 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2890 | sigaction (w->signum, &sa, 0); |
|
|
2891 | |
|
|
2892 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
2893 | { |
|
|
2894 | sigemptyset (&sa.sa_mask); |
|
|
2895 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2896 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2897 | } |
|
|
2898 | #endif |
|
|
2899 | } |
|
|
2900 | |
|
|
2901 | EV_FREQUENT_CHECK; |
|
|
2902 | } |
|
|
2903 | |
|
|
2904 | void noinline |
|
|
2905 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
2906 | { |
|
|
2907 | clear_pending (EV_A_ (W)w); |
|
|
2908 | if (expect_false (!ev_is_active (w))) |
|
|
2909 | return; |
|
|
2910 | |
|
|
2911 | EV_FREQUENT_CHECK; |
|
|
2912 | |
|
|
2913 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
2914 | ev_stop (EV_A_ (W)w); |
|
|
2915 | |
|
|
2916 | if (!signals [w->signum - 1].head) |
|
|
2917 | { |
|
|
2918 | #if EV_MULTIPLICITY |
|
|
2919 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2920 | #endif |
|
|
2921 | #if EV_USE_SIGNALFD |
|
|
2922 | if (sigfd >= 0) |
|
|
2923 | { |
|
|
2924 | sigset_t ss; |
|
|
2925 | |
|
|
2926 | sigemptyset (&ss); |
|
|
2927 | sigaddset (&ss, w->signum); |
|
|
2928 | sigdelset (&sigfd_set, w->signum); |
|
|
2929 | |
|
|
2930 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2931 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
689 | } |
2932 | } |
690 | else |
2933 | else |
691 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
2934 | #endif |
692 | |
2935 | signal (w->signum, SIG_DFL); |
693 | event ((W)w, EV_PERIODIC); |
|
|
694 | } |
|
|
695 | } |
|
|
696 | |
|
|
697 | static void |
|
|
698 | periodics_reschedule (ev_tstamp diff) |
|
|
699 | { |
|
|
700 | int i; |
|
|
701 | |
|
|
702 | /* adjust periodics after time jump */ |
|
|
703 | for (i = 0; i < periodiccnt; ++i) |
|
|
704 | { |
2936 | } |
705 | struct ev_periodic *w = periodics [i]; |
|
|
706 | |
2937 | |
707 | if (w->interval) |
2938 | EV_FREQUENT_CHECK; |
|
|
2939 | } |
|
|
2940 | |
|
|
2941 | #endif |
|
|
2942 | |
|
|
2943 | #if EV_CHILD_ENABLE |
|
|
2944 | |
|
|
2945 | void |
|
|
2946 | ev_child_start (EV_P_ ev_child *w) |
|
|
2947 | { |
|
|
2948 | #if EV_MULTIPLICITY |
|
|
2949 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2950 | #endif |
|
|
2951 | if (expect_false (ev_is_active (w))) |
|
|
2952 | return; |
|
|
2953 | |
|
|
2954 | EV_FREQUENT_CHECK; |
|
|
2955 | |
|
|
2956 | ev_start (EV_A_ (W)w, 1); |
|
|
2957 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
2958 | |
|
|
2959 | EV_FREQUENT_CHECK; |
|
|
2960 | } |
|
|
2961 | |
|
|
2962 | void |
|
|
2963 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2964 | { |
|
|
2965 | clear_pending (EV_A_ (W)w); |
|
|
2966 | if (expect_false (!ev_is_active (w))) |
|
|
2967 | return; |
|
|
2968 | |
|
|
2969 | EV_FREQUENT_CHECK; |
|
|
2970 | |
|
|
2971 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
2972 | ev_stop (EV_A_ (W)w); |
|
|
2973 | |
|
|
2974 | EV_FREQUENT_CHECK; |
|
|
2975 | } |
|
|
2976 | |
|
|
2977 | #endif |
|
|
2978 | |
|
|
2979 | #if EV_STAT_ENABLE |
|
|
2980 | |
|
|
2981 | # ifdef _WIN32 |
|
|
2982 | # undef lstat |
|
|
2983 | # define lstat(a,b) _stati64 (a,b) |
|
|
2984 | # endif |
|
|
2985 | |
|
|
2986 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2987 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2988 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2989 | |
|
|
2990 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2991 | |
|
|
2992 | #if EV_USE_INOTIFY |
|
|
2993 | |
|
|
2994 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2995 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
2996 | |
|
|
2997 | static void noinline |
|
|
2998 | infy_add (EV_P_ ev_stat *w) |
|
|
2999 | { |
|
|
3000 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
3001 | |
|
|
3002 | if (w->wd >= 0) |
|
|
3003 | { |
|
|
3004 | struct statfs sfs; |
|
|
3005 | |
|
|
3006 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3007 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3008 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3009 | |
|
|
3010 | if (!fs_2625) |
|
|
3011 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3012 | else if (!statfs (w->path, &sfs) |
|
|
3013 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3014 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3015 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3016 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
3017 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
3018 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
3019 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
3020 | else |
|
|
3021 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
3022 | } |
|
|
3023 | else |
|
|
3024 | { |
|
|
3025 | /* can't use inotify, continue to stat */ |
|
|
3026 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3027 | |
|
|
3028 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
3029 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
3030 | /* but an efficiency issue only */ |
|
|
3031 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
708 | { |
3032 | { |
709 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
3033 | char path [4096]; |
|
|
3034 | strcpy (path, w->path); |
710 | |
3035 | |
711 | if (fabs (diff) >= 1e-4) |
3036 | do |
712 | { |
3037 | { |
713 | ev_periodic_stop (w); |
3038 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
714 | ev_periodic_start (w); |
3039 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
715 | |
3040 | |
716 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
3041 | char *pend = strrchr (path, '/'); |
|
|
3042 | |
|
|
3043 | if (!pend || pend == path) |
|
|
3044 | break; |
|
|
3045 | |
|
|
3046 | *pend = 0; |
|
|
3047 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
3048 | } |
|
|
3049 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
3050 | } |
|
|
3051 | } |
|
|
3052 | |
|
|
3053 | if (w->wd >= 0) |
|
|
3054 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3055 | |
|
|
3056 | /* now re-arm timer, if required */ |
|
|
3057 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3058 | ev_timer_again (EV_A_ &w->timer); |
|
|
3059 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3060 | } |
|
|
3061 | |
|
|
3062 | static void noinline |
|
|
3063 | infy_del (EV_P_ ev_stat *w) |
|
|
3064 | { |
|
|
3065 | int slot; |
|
|
3066 | int wd = w->wd; |
|
|
3067 | |
|
|
3068 | if (wd < 0) |
|
|
3069 | return; |
|
|
3070 | |
|
|
3071 | w->wd = -2; |
|
|
3072 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
3073 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
3074 | |
|
|
3075 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
3076 | inotify_rm_watch (fs_fd, wd); |
|
|
3077 | } |
|
|
3078 | |
|
|
3079 | static void noinline |
|
|
3080 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
3081 | { |
|
|
3082 | if (slot < 0) |
|
|
3083 | /* overflow, need to check for all hash slots */ |
|
|
3084 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3085 | infy_wd (EV_A_ slot, wd, ev); |
|
|
3086 | else |
|
|
3087 | { |
|
|
3088 | WL w_; |
|
|
3089 | |
|
|
3090 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
3091 | { |
|
|
3092 | ev_stat *w = (ev_stat *)w_; |
|
|
3093 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
3094 | |
|
|
3095 | if (w->wd == wd || wd == -1) |
|
|
3096 | { |
|
|
3097 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
3098 | { |
|
|
3099 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3100 | w->wd = -1; |
|
|
3101 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3102 | } |
|
|
3103 | |
|
|
3104 | stat_timer_cb (EV_A_ &w->timer, 0); |
717 | } |
3105 | } |
718 | } |
3106 | } |
719 | } |
3107 | } |
720 | } |
3108 | } |
721 | |
3109 | |
722 | static int |
3110 | static void |
723 | time_update_monotonic (void) |
3111 | infy_cb (EV_P_ ev_io *w, int revents) |
724 | { |
3112 | { |
725 | now = get_clock (); |
3113 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
3114 | int ofs; |
|
|
3115 | int len = read (fs_fd, buf, sizeof (buf)); |
726 | |
3116 | |
727 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
3117 | for (ofs = 0; ofs < len; ) |
|
|
3118 | { |
|
|
3119 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
3120 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3121 | ofs += sizeof (struct inotify_event) + ev->len; |
728 | { |
3122 | } |
729 | ev_now = now + diff; |
3123 | } |
|
|
3124 | |
|
|
3125 | inline_size void |
|
|
3126 | ev_check_2625 (EV_P) |
|
|
3127 | { |
|
|
3128 | /* kernels < 2.6.25 are borked |
|
|
3129 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
3130 | */ |
|
|
3131 | if (ev_linux_version () < 0x020619) |
730 | return 0; |
3132 | return; |
|
|
3133 | |
|
|
3134 | fs_2625 = 1; |
|
|
3135 | } |
|
|
3136 | |
|
|
3137 | inline_size int |
|
|
3138 | infy_newfd (void) |
|
|
3139 | { |
|
|
3140 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3141 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3142 | if (fd >= 0) |
|
|
3143 | return fd; |
|
|
3144 | #endif |
|
|
3145 | return inotify_init (); |
|
|
3146 | } |
|
|
3147 | |
|
|
3148 | inline_size void |
|
|
3149 | infy_init (EV_P) |
|
|
3150 | { |
|
|
3151 | if (fs_fd != -2) |
|
|
3152 | return; |
|
|
3153 | |
|
|
3154 | fs_fd = -1; |
|
|
3155 | |
|
|
3156 | ev_check_2625 (EV_A); |
|
|
3157 | |
|
|
3158 | fs_fd = infy_newfd (); |
|
|
3159 | |
|
|
3160 | if (fs_fd >= 0) |
731 | } |
3161 | { |
|
|
3162 | fd_intern (fs_fd); |
|
|
3163 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3164 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3165 | ev_io_start (EV_A_ &fs_w); |
|
|
3166 | ev_unref (EV_A); |
|
|
3167 | } |
|
|
3168 | } |
|
|
3169 | |
|
|
3170 | inline_size void |
|
|
3171 | infy_fork (EV_P) |
|
|
3172 | { |
|
|
3173 | int slot; |
|
|
3174 | |
|
|
3175 | if (fs_fd < 0) |
|
|
3176 | return; |
|
|
3177 | |
|
|
3178 | ev_ref (EV_A); |
|
|
3179 | ev_io_stop (EV_A_ &fs_w); |
|
|
3180 | close (fs_fd); |
|
|
3181 | fs_fd = infy_newfd (); |
|
|
3182 | |
|
|
3183 | if (fs_fd >= 0) |
|
|
3184 | { |
|
|
3185 | fd_intern (fs_fd); |
|
|
3186 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3187 | ev_io_start (EV_A_ &fs_w); |
|
|
3188 | ev_unref (EV_A); |
|
|
3189 | } |
|
|
3190 | |
|
|
3191 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3192 | { |
|
|
3193 | WL w_ = fs_hash [slot].head; |
|
|
3194 | fs_hash [slot].head = 0; |
|
|
3195 | |
|
|
3196 | while (w_) |
|
|
3197 | { |
|
|
3198 | ev_stat *w = (ev_stat *)w_; |
|
|
3199 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3200 | |
|
|
3201 | w->wd = -1; |
|
|
3202 | |
|
|
3203 | if (fs_fd >= 0) |
|
|
3204 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3205 | else |
|
|
3206 | { |
|
|
3207 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3208 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3209 | ev_timer_again (EV_A_ &w->timer); |
|
|
3210 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3211 | } |
|
|
3212 | } |
|
|
3213 | } |
|
|
3214 | } |
|
|
3215 | |
|
|
3216 | #endif |
|
|
3217 | |
|
|
3218 | #ifdef _WIN32 |
|
|
3219 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3220 | #else |
|
|
3221 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3222 | #endif |
|
|
3223 | |
|
|
3224 | void |
|
|
3225 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
3226 | { |
|
|
3227 | if (lstat (w->path, &w->attr) < 0) |
|
|
3228 | w->attr.st_nlink = 0; |
|
|
3229 | else if (!w->attr.st_nlink) |
|
|
3230 | w->attr.st_nlink = 1; |
|
|
3231 | } |
|
|
3232 | |
|
|
3233 | static void noinline |
|
|
3234 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3235 | { |
|
|
3236 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3237 | |
|
|
3238 | ev_statdata prev = w->attr; |
|
|
3239 | ev_stat_stat (EV_A_ w); |
|
|
3240 | |
|
|
3241 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3242 | if ( |
|
|
3243 | prev.st_dev != w->attr.st_dev |
|
|
3244 | || prev.st_ino != w->attr.st_ino |
|
|
3245 | || prev.st_mode != w->attr.st_mode |
|
|
3246 | || prev.st_nlink != w->attr.st_nlink |
|
|
3247 | || prev.st_uid != w->attr.st_uid |
|
|
3248 | || prev.st_gid != w->attr.st_gid |
|
|
3249 | || prev.st_rdev != w->attr.st_rdev |
|
|
3250 | || prev.st_size != w->attr.st_size |
|
|
3251 | || prev.st_atime != w->attr.st_atime |
|
|
3252 | || prev.st_mtime != w->attr.st_mtime |
|
|
3253 | || prev.st_ctime != w->attr.st_ctime |
|
|
3254 | ) { |
|
|
3255 | /* we only update w->prev on actual differences */ |
|
|
3256 | /* in case we test more often than invoke the callback, */ |
|
|
3257 | /* to ensure that prev is always different to attr */ |
|
|
3258 | w->prev = prev; |
|
|
3259 | |
|
|
3260 | #if EV_USE_INOTIFY |
|
|
3261 | if (fs_fd >= 0) |
|
|
3262 | { |
|
|
3263 | infy_del (EV_A_ w); |
|
|
3264 | infy_add (EV_A_ w); |
|
|
3265 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3266 | } |
|
|
3267 | #endif |
|
|
3268 | |
|
|
3269 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3270 | } |
|
|
3271 | } |
|
|
3272 | |
|
|
3273 | void |
|
|
3274 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3275 | { |
|
|
3276 | if (expect_false (ev_is_active (w))) |
|
|
3277 | return; |
|
|
3278 | |
|
|
3279 | ev_stat_stat (EV_A_ w); |
|
|
3280 | |
|
|
3281 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3282 | w->interval = MIN_STAT_INTERVAL; |
|
|
3283 | |
|
|
3284 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3285 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3286 | |
|
|
3287 | #if EV_USE_INOTIFY |
|
|
3288 | infy_init (EV_A); |
|
|
3289 | |
|
|
3290 | if (fs_fd >= 0) |
|
|
3291 | infy_add (EV_A_ w); |
732 | else |
3292 | else |
|
|
3293 | #endif |
|
|
3294 | { |
|
|
3295 | ev_timer_again (EV_A_ &w->timer); |
|
|
3296 | ev_unref (EV_A); |
733 | { |
3297 | } |
734 | now_floor = now; |
3298 | |
735 | ev_now = ev_time (); |
3299 | ev_start (EV_A_ (W)w, 1); |
|
|
3300 | |
|
|
3301 | EV_FREQUENT_CHECK; |
|
|
3302 | } |
|
|
3303 | |
|
|
3304 | void |
|
|
3305 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3306 | { |
|
|
3307 | clear_pending (EV_A_ (W)w); |
|
|
3308 | if (expect_false (!ev_is_active (w))) |
736 | return 1; |
3309 | return; |
|
|
3310 | |
|
|
3311 | EV_FREQUENT_CHECK; |
|
|
3312 | |
|
|
3313 | #if EV_USE_INOTIFY |
|
|
3314 | infy_del (EV_A_ w); |
|
|
3315 | #endif |
|
|
3316 | |
|
|
3317 | if (ev_is_active (&w->timer)) |
737 | } |
3318 | { |
|
|
3319 | ev_ref (EV_A); |
|
|
3320 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3321 | } |
|
|
3322 | |
|
|
3323 | ev_stop (EV_A_ (W)w); |
|
|
3324 | |
|
|
3325 | EV_FREQUENT_CHECK; |
|
|
3326 | } |
|
|
3327 | #endif |
|
|
3328 | |
|
|
3329 | #if EV_IDLE_ENABLE |
|
|
3330 | void |
|
|
3331 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
3332 | { |
|
|
3333 | if (expect_false (ev_is_active (w))) |
|
|
3334 | return; |
|
|
3335 | |
|
|
3336 | pri_adjust (EV_A_ (W)w); |
|
|
3337 | |
|
|
3338 | EV_FREQUENT_CHECK; |
|
|
3339 | |
|
|
3340 | { |
|
|
3341 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3342 | |
|
|
3343 | ++idleall; |
|
|
3344 | ev_start (EV_A_ (W)w, active); |
|
|
3345 | |
|
|
3346 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3347 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3348 | } |
|
|
3349 | |
|
|
3350 | EV_FREQUENT_CHECK; |
|
|
3351 | } |
|
|
3352 | |
|
|
3353 | void |
|
|
3354 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3355 | { |
|
|
3356 | clear_pending (EV_A_ (W)w); |
|
|
3357 | if (expect_false (!ev_is_active (w))) |
|
|
3358 | return; |
|
|
3359 | |
|
|
3360 | EV_FREQUENT_CHECK; |
|
|
3361 | |
|
|
3362 | { |
|
|
3363 | int active = ev_active (w); |
|
|
3364 | |
|
|
3365 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3366 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3367 | |
|
|
3368 | ev_stop (EV_A_ (W)w); |
|
|
3369 | --idleall; |
|
|
3370 | } |
|
|
3371 | |
|
|
3372 | EV_FREQUENT_CHECK; |
|
|
3373 | } |
|
|
3374 | #endif |
|
|
3375 | |
|
|
3376 | #if EV_PREPARE_ENABLE |
|
|
3377 | void |
|
|
3378 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3379 | { |
|
|
3380 | if (expect_false (ev_is_active (w))) |
|
|
3381 | return; |
|
|
3382 | |
|
|
3383 | EV_FREQUENT_CHECK; |
|
|
3384 | |
|
|
3385 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3386 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3387 | prepares [preparecnt - 1] = w; |
|
|
3388 | |
|
|
3389 | EV_FREQUENT_CHECK; |
|
|
3390 | } |
|
|
3391 | |
|
|
3392 | void |
|
|
3393 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3394 | { |
|
|
3395 | clear_pending (EV_A_ (W)w); |
|
|
3396 | if (expect_false (!ev_is_active (w))) |
|
|
3397 | return; |
|
|
3398 | |
|
|
3399 | EV_FREQUENT_CHECK; |
|
|
3400 | |
|
|
3401 | { |
|
|
3402 | int active = ev_active (w); |
|
|
3403 | |
|
|
3404 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3405 | ev_active (prepares [active - 1]) = active; |
|
|
3406 | } |
|
|
3407 | |
|
|
3408 | ev_stop (EV_A_ (W)w); |
|
|
3409 | |
|
|
3410 | EV_FREQUENT_CHECK; |
|
|
3411 | } |
|
|
3412 | #endif |
|
|
3413 | |
|
|
3414 | #if EV_CHECK_ENABLE |
|
|
3415 | void |
|
|
3416 | ev_check_start (EV_P_ ev_check *w) |
|
|
3417 | { |
|
|
3418 | if (expect_false (ev_is_active (w))) |
|
|
3419 | return; |
|
|
3420 | |
|
|
3421 | EV_FREQUENT_CHECK; |
|
|
3422 | |
|
|
3423 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3424 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3425 | checks [checkcnt - 1] = w; |
|
|
3426 | |
|
|
3427 | EV_FREQUENT_CHECK; |
|
|
3428 | } |
|
|
3429 | |
|
|
3430 | void |
|
|
3431 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3432 | { |
|
|
3433 | clear_pending (EV_A_ (W)w); |
|
|
3434 | if (expect_false (!ev_is_active (w))) |
|
|
3435 | return; |
|
|
3436 | |
|
|
3437 | EV_FREQUENT_CHECK; |
|
|
3438 | |
|
|
3439 | { |
|
|
3440 | int active = ev_active (w); |
|
|
3441 | |
|
|
3442 | checks [active - 1] = checks [--checkcnt]; |
|
|
3443 | ev_active (checks [active - 1]) = active; |
|
|
3444 | } |
|
|
3445 | |
|
|
3446 | ev_stop (EV_A_ (W)w); |
|
|
3447 | |
|
|
3448 | EV_FREQUENT_CHECK; |
|
|
3449 | } |
|
|
3450 | #endif |
|
|
3451 | |
|
|
3452 | #if EV_EMBED_ENABLE |
|
|
3453 | void noinline |
|
|
3454 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3455 | { |
|
|
3456 | ev_run (w->other, EVRUN_NOWAIT); |
738 | } |
3457 | } |
739 | |
3458 | |
740 | static void |
3459 | static void |
741 | time_update (void) |
3460 | embed_io_cb (EV_P_ ev_io *io, int revents) |
742 | { |
3461 | { |
743 | int i; |
3462 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
744 | |
3463 | |
745 | #if EV_USE_MONOTONIC |
3464 | if (ev_cb (w)) |
746 | if (expect_true (have_monotonic)) |
3465 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
747 | { |
|
|
748 | if (time_update_monotonic ()) |
|
|
749 | { |
|
|
750 | ev_tstamp odiff = diff; |
|
|
751 | |
|
|
752 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
753 | { |
|
|
754 | diff = ev_now - now; |
|
|
755 | |
|
|
756 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
757 | return; /* all is well */ |
|
|
758 | |
|
|
759 | ev_now = ev_time (); |
|
|
760 | now = get_clock (); |
|
|
761 | now_floor = now; |
|
|
762 | } |
|
|
763 | |
|
|
764 | periodics_reschedule (diff - odiff); |
|
|
765 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
766 | } |
|
|
767 | } |
|
|
768 | else |
3466 | else |
769 | #endif |
3467 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
3468 | } |
|
|
3469 | |
|
|
3470 | static void |
|
|
3471 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3472 | { |
|
|
3473 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3474 | |
770 | { |
3475 | { |
771 | ev_now = ev_time (); |
3476 | EV_P = w->other; |
772 | |
3477 | |
773 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
3478 | while (fdchangecnt) |
774 | { |
3479 | { |
775 | periodics_reschedule (ev_now - now); |
3480 | fd_reify (EV_A); |
776 | |
3481 | ev_run (EV_A_ EVRUN_NOWAIT); |
777 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
778 | for (i = 0; i < timercnt; ++i) |
|
|
779 | timers [i]->at += diff; |
|
|
780 | } |
3482 | } |
781 | |
|
|
782 | now = ev_now; |
|
|
783 | } |
3483 | } |
784 | } |
3484 | } |
785 | |
3485 | |
786 | int ev_loop_done; |
3486 | static void |
787 | |
3487 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
788 | void ev_loop (int flags) |
|
|
789 | { |
3488 | { |
790 | double block; |
3489 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
791 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
792 | |
3490 | |
793 | do |
3491 | ev_embed_stop (EV_A_ w); |
|
|
3492 | |
794 | { |
3493 | { |
795 | /* queue check watchers (and execute them) */ |
3494 | EV_P = w->other; |
796 | if (expect_false (preparecnt)) |
|
|
797 | { |
|
|
798 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
799 | call_pending (); |
|
|
800 | } |
|
|
801 | |
3495 | |
802 | /* update fd-related kernel structures */ |
3496 | ev_loop_fork (EV_A); |
803 | fd_reify (); |
3497 | ev_run (EV_A_ EVRUN_NOWAIT); |
804 | |
|
|
805 | /* calculate blocking time */ |
|
|
806 | |
|
|
807 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
808 | always have timers, we just calculate it always */ |
|
|
809 | #if EV_USE_MONOTONIC |
|
|
810 | if (expect_true (have_monotonic)) |
|
|
811 | time_update_monotonic (); |
|
|
812 | else |
|
|
813 | #endif |
|
|
814 | { |
|
|
815 | ev_now = ev_time (); |
|
|
816 | now = ev_now; |
|
|
817 | } |
|
|
818 | |
|
|
819 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
820 | block = 0.; |
|
|
821 | else |
|
|
822 | { |
|
|
823 | block = MAX_BLOCKTIME; |
|
|
824 | |
|
|
825 | if (timercnt) |
|
|
826 | { |
|
|
827 | ev_tstamp to = timers [0]->at - now + method_fudge; |
|
|
828 | if (block > to) block = to; |
|
|
829 | } |
|
|
830 | |
|
|
831 | if (periodiccnt) |
|
|
832 | { |
|
|
833 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
|
|
834 | if (block > to) block = to; |
|
|
835 | } |
|
|
836 | |
|
|
837 | if (block < 0.) block = 0.; |
|
|
838 | } |
|
|
839 | |
|
|
840 | method_poll (block); |
|
|
841 | |
|
|
842 | /* update ev_now, do magic */ |
|
|
843 | time_update (); |
|
|
844 | |
|
|
845 | /* queue pending timers and reschedule them */ |
|
|
846 | timers_reify (); /* relative timers called last */ |
|
|
847 | periodics_reify (); /* absolute timers called first */ |
|
|
848 | |
|
|
849 | /* queue idle watchers unless io or timers are pending */ |
|
|
850 | if (!pendingcnt) |
|
|
851 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
852 | |
|
|
853 | /* queue check watchers, to be executed first */ |
|
|
854 | if (checkcnt) |
|
|
855 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
856 | |
|
|
857 | call_pending (); |
|
|
858 | } |
3498 | } |
859 | while (!ev_loop_done); |
|
|
860 | |
3499 | |
861 | if (ev_loop_done != 2) |
3500 | ev_embed_start (EV_A_ w); |
862 | ev_loop_done = 0; |
|
|
863 | } |
3501 | } |
|
|
3502 | |
|
|
3503 | #if 0 |
|
|
3504 | static void |
|
|
3505 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3506 | { |
|
|
3507 | ev_idle_stop (EV_A_ idle); |
|
|
3508 | } |
|
|
3509 | #endif |
|
|
3510 | |
|
|
3511 | void |
|
|
3512 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3513 | { |
|
|
3514 | if (expect_false (ev_is_active (w))) |
|
|
3515 | return; |
|
|
3516 | |
|
|
3517 | { |
|
|
3518 | EV_P = w->other; |
|
|
3519 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3520 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3521 | } |
|
|
3522 | |
|
|
3523 | EV_FREQUENT_CHECK; |
|
|
3524 | |
|
|
3525 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3526 | ev_io_start (EV_A_ &w->io); |
|
|
3527 | |
|
|
3528 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3529 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3530 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3531 | |
|
|
3532 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3533 | ev_fork_start (EV_A_ &w->fork); |
|
|
3534 | |
|
|
3535 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3536 | |
|
|
3537 | ev_start (EV_A_ (W)w, 1); |
|
|
3538 | |
|
|
3539 | EV_FREQUENT_CHECK; |
|
|
3540 | } |
|
|
3541 | |
|
|
3542 | void |
|
|
3543 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
3544 | { |
|
|
3545 | clear_pending (EV_A_ (W)w); |
|
|
3546 | if (expect_false (!ev_is_active (w))) |
|
|
3547 | return; |
|
|
3548 | |
|
|
3549 | EV_FREQUENT_CHECK; |
|
|
3550 | |
|
|
3551 | ev_io_stop (EV_A_ &w->io); |
|
|
3552 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3553 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3554 | |
|
|
3555 | ev_stop (EV_A_ (W)w); |
|
|
3556 | |
|
|
3557 | EV_FREQUENT_CHECK; |
|
|
3558 | } |
|
|
3559 | #endif |
|
|
3560 | |
|
|
3561 | #if EV_FORK_ENABLE |
|
|
3562 | void |
|
|
3563 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3564 | { |
|
|
3565 | if (expect_false (ev_is_active (w))) |
|
|
3566 | return; |
|
|
3567 | |
|
|
3568 | EV_FREQUENT_CHECK; |
|
|
3569 | |
|
|
3570 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3571 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3572 | forks [forkcnt - 1] = w; |
|
|
3573 | |
|
|
3574 | EV_FREQUENT_CHECK; |
|
|
3575 | } |
|
|
3576 | |
|
|
3577 | void |
|
|
3578 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3579 | { |
|
|
3580 | clear_pending (EV_A_ (W)w); |
|
|
3581 | if (expect_false (!ev_is_active (w))) |
|
|
3582 | return; |
|
|
3583 | |
|
|
3584 | EV_FREQUENT_CHECK; |
|
|
3585 | |
|
|
3586 | { |
|
|
3587 | int active = ev_active (w); |
|
|
3588 | |
|
|
3589 | forks [active - 1] = forks [--forkcnt]; |
|
|
3590 | ev_active (forks [active - 1]) = active; |
|
|
3591 | } |
|
|
3592 | |
|
|
3593 | ev_stop (EV_A_ (W)w); |
|
|
3594 | |
|
|
3595 | EV_FREQUENT_CHECK; |
|
|
3596 | } |
|
|
3597 | #endif |
|
|
3598 | |
|
|
3599 | #if EV_CLEANUP_ENABLE |
|
|
3600 | void |
|
|
3601 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
3602 | { |
|
|
3603 | if (expect_false (ev_is_active (w))) |
|
|
3604 | return; |
|
|
3605 | |
|
|
3606 | EV_FREQUENT_CHECK; |
|
|
3607 | |
|
|
3608 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3609 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3610 | cleanups [cleanupcnt - 1] = w; |
|
|
3611 | |
|
|
3612 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3613 | ev_unref (EV_A); |
|
|
3614 | EV_FREQUENT_CHECK; |
|
|
3615 | } |
|
|
3616 | |
|
|
3617 | void |
|
|
3618 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3619 | { |
|
|
3620 | clear_pending (EV_A_ (W)w); |
|
|
3621 | if (expect_false (!ev_is_active (w))) |
|
|
3622 | return; |
|
|
3623 | |
|
|
3624 | EV_FREQUENT_CHECK; |
|
|
3625 | ev_ref (EV_A); |
|
|
3626 | |
|
|
3627 | { |
|
|
3628 | int active = ev_active (w); |
|
|
3629 | |
|
|
3630 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3631 | ev_active (cleanups [active - 1]) = active; |
|
|
3632 | } |
|
|
3633 | |
|
|
3634 | ev_stop (EV_A_ (W)w); |
|
|
3635 | |
|
|
3636 | EV_FREQUENT_CHECK; |
|
|
3637 | } |
|
|
3638 | #endif |
|
|
3639 | |
|
|
3640 | #if EV_ASYNC_ENABLE |
|
|
3641 | void |
|
|
3642 | ev_async_start (EV_P_ ev_async *w) |
|
|
3643 | { |
|
|
3644 | if (expect_false (ev_is_active (w))) |
|
|
3645 | return; |
|
|
3646 | |
|
|
3647 | w->sent = 0; |
|
|
3648 | |
|
|
3649 | evpipe_init (EV_A); |
|
|
3650 | |
|
|
3651 | EV_FREQUENT_CHECK; |
|
|
3652 | |
|
|
3653 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3654 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3655 | asyncs [asynccnt - 1] = w; |
|
|
3656 | |
|
|
3657 | EV_FREQUENT_CHECK; |
|
|
3658 | } |
|
|
3659 | |
|
|
3660 | void |
|
|
3661 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3662 | { |
|
|
3663 | clear_pending (EV_A_ (W)w); |
|
|
3664 | if (expect_false (!ev_is_active (w))) |
|
|
3665 | return; |
|
|
3666 | |
|
|
3667 | EV_FREQUENT_CHECK; |
|
|
3668 | |
|
|
3669 | { |
|
|
3670 | int active = ev_active (w); |
|
|
3671 | |
|
|
3672 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3673 | ev_active (asyncs [active - 1]) = active; |
|
|
3674 | } |
|
|
3675 | |
|
|
3676 | ev_stop (EV_A_ (W)w); |
|
|
3677 | |
|
|
3678 | EV_FREQUENT_CHECK; |
|
|
3679 | } |
|
|
3680 | |
|
|
3681 | void |
|
|
3682 | ev_async_send (EV_P_ ev_async *w) |
|
|
3683 | { |
|
|
3684 | w->sent = 1; |
|
|
3685 | evpipe_write (EV_A_ &async_pending); |
|
|
3686 | } |
|
|
3687 | #endif |
864 | |
3688 | |
865 | /*****************************************************************************/ |
3689 | /*****************************************************************************/ |
866 | |
3690 | |
867 | static void |
|
|
868 | wlist_add (WL *head, WL elem) |
|
|
869 | { |
|
|
870 | elem->next = *head; |
|
|
871 | *head = elem; |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
|
|
875 | wlist_del (WL *head, WL elem) |
|
|
876 | { |
|
|
877 | while (*head) |
|
|
878 | { |
|
|
879 | if (*head == elem) |
|
|
880 | { |
|
|
881 | *head = elem->next; |
|
|
882 | return; |
|
|
883 | } |
|
|
884 | |
|
|
885 | head = &(*head)->next; |
|
|
886 | } |
|
|
887 | } |
|
|
888 | |
|
|
889 | static void |
|
|
890 | ev_clear_pending (W w) |
|
|
891 | { |
|
|
892 | if (w->pending) |
|
|
893 | { |
|
|
894 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
895 | w->pending = 0; |
|
|
896 | } |
|
|
897 | } |
|
|
898 | |
|
|
899 | static void |
|
|
900 | ev_start (W w, int active) |
|
|
901 | { |
|
|
902 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
903 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
904 | |
|
|
905 | w->active = active; |
|
|
906 | } |
|
|
907 | |
|
|
908 | static void |
|
|
909 | ev_stop (W w) |
|
|
910 | { |
|
|
911 | w->active = 0; |
|
|
912 | } |
|
|
913 | |
|
|
914 | /*****************************************************************************/ |
|
|
915 | |
|
|
916 | void |
|
|
917 | ev_io_start (struct ev_io *w) |
|
|
918 | { |
|
|
919 | int fd = w->fd; |
|
|
920 | |
|
|
921 | if (ev_is_active (w)) |
|
|
922 | return; |
|
|
923 | |
|
|
924 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
925 | |
|
|
926 | ev_start ((W)w, 1); |
|
|
927 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
928 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
929 | |
|
|
930 | fd_change (fd); |
|
|
931 | } |
|
|
932 | |
|
|
933 | void |
|
|
934 | ev_io_stop (struct ev_io *w) |
|
|
935 | { |
|
|
936 | ev_clear_pending ((W)w); |
|
|
937 | if (!ev_is_active (w)) |
|
|
938 | return; |
|
|
939 | |
|
|
940 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
941 | ev_stop ((W)w); |
|
|
942 | |
|
|
943 | fd_change (w->fd); |
|
|
944 | } |
|
|
945 | |
|
|
946 | void |
|
|
947 | ev_timer_start (struct ev_timer *w) |
|
|
948 | { |
|
|
949 | if (ev_is_active (w)) |
|
|
950 | return; |
|
|
951 | |
|
|
952 | w->at += now; |
|
|
953 | |
|
|
954 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
955 | |
|
|
956 | ev_start ((W)w, ++timercnt); |
|
|
957 | array_needsize (timers, timermax, timercnt, ); |
|
|
958 | timers [timercnt - 1] = w; |
|
|
959 | upheap ((WT *)timers, timercnt - 1); |
|
|
960 | } |
|
|
961 | |
|
|
962 | void |
|
|
963 | ev_timer_stop (struct ev_timer *w) |
|
|
964 | { |
|
|
965 | ev_clear_pending ((W)w); |
|
|
966 | if (!ev_is_active (w)) |
|
|
967 | return; |
|
|
968 | |
|
|
969 | if (w->active < timercnt--) |
|
|
970 | { |
|
|
971 | timers [w->active - 1] = timers [timercnt]; |
|
|
972 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
973 | } |
|
|
974 | |
|
|
975 | w->at = w->repeat; |
|
|
976 | |
|
|
977 | ev_stop ((W)w); |
|
|
978 | } |
|
|
979 | |
|
|
980 | void |
|
|
981 | ev_timer_again (struct ev_timer *w) |
|
|
982 | { |
|
|
983 | if (ev_is_active (w)) |
|
|
984 | { |
|
|
985 | if (w->repeat) |
|
|
986 | { |
|
|
987 | w->at = now + w->repeat; |
|
|
988 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
989 | } |
|
|
990 | else |
|
|
991 | ev_timer_stop (w); |
|
|
992 | } |
|
|
993 | else if (w->repeat) |
|
|
994 | ev_timer_start (w); |
|
|
995 | } |
|
|
996 | |
|
|
997 | void |
|
|
998 | ev_periodic_start (struct ev_periodic *w) |
|
|
999 | { |
|
|
1000 | if (ev_is_active (w)) |
|
|
1001 | return; |
|
|
1002 | |
|
|
1003 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1004 | |
|
|
1005 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1006 | if (w->interval) |
|
|
1007 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
1008 | |
|
|
1009 | ev_start ((W)w, ++periodiccnt); |
|
|
1010 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
1011 | periodics [periodiccnt - 1] = w; |
|
|
1012 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | void |
|
|
1016 | ev_periodic_stop (struct ev_periodic *w) |
|
|
1017 | { |
|
|
1018 | ev_clear_pending ((W)w); |
|
|
1019 | if (!ev_is_active (w)) |
|
|
1020 | return; |
|
|
1021 | |
|
|
1022 | if (w->active < periodiccnt--) |
|
|
1023 | { |
|
|
1024 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
1025 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
1026 | } |
|
|
1027 | |
|
|
1028 | ev_stop ((W)w); |
|
|
1029 | } |
|
|
1030 | |
|
|
1031 | #ifndef SA_RESTART |
|
|
1032 | # define SA_RESTART 0 |
|
|
1033 | #endif |
|
|
1034 | |
|
|
1035 | void |
|
|
1036 | ev_signal_start (struct ev_signal *w) |
|
|
1037 | { |
|
|
1038 | if (ev_is_active (w)) |
|
|
1039 | return; |
|
|
1040 | |
|
|
1041 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1042 | |
|
|
1043 | ev_start ((W)w, 1); |
|
|
1044 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
1045 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1046 | |
|
|
1047 | if (!w->next) |
|
|
1048 | { |
|
|
1049 | struct sigaction sa; |
|
|
1050 | sa.sa_handler = sighandler; |
|
|
1051 | sigfillset (&sa.sa_mask); |
|
|
1052 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1053 | sigaction (w->signum, &sa, 0); |
|
|
1054 | } |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | void |
|
|
1058 | ev_signal_stop (struct ev_signal *w) |
|
|
1059 | { |
|
|
1060 | ev_clear_pending ((W)w); |
|
|
1061 | if (!ev_is_active (w)) |
|
|
1062 | return; |
|
|
1063 | |
|
|
1064 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1065 | ev_stop ((W)w); |
|
|
1066 | |
|
|
1067 | if (!signals [w->signum - 1].head) |
|
|
1068 | signal (w->signum, SIG_DFL); |
|
|
1069 | } |
|
|
1070 | |
|
|
1071 | void |
|
|
1072 | ev_idle_start (struct ev_idle *w) |
|
|
1073 | { |
|
|
1074 | if (ev_is_active (w)) |
|
|
1075 | return; |
|
|
1076 | |
|
|
1077 | ev_start ((W)w, ++idlecnt); |
|
|
1078 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1079 | idles [idlecnt - 1] = w; |
|
|
1080 | } |
|
|
1081 | |
|
|
1082 | void |
|
|
1083 | ev_idle_stop (struct ev_idle *w) |
|
|
1084 | { |
|
|
1085 | ev_clear_pending ((W)w); |
|
|
1086 | if (ev_is_active (w)) |
|
|
1087 | return; |
|
|
1088 | |
|
|
1089 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1090 | ev_stop ((W)w); |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | void |
|
|
1094 | ev_prepare_start (struct ev_prepare *w) |
|
|
1095 | { |
|
|
1096 | if (ev_is_active (w)) |
|
|
1097 | return; |
|
|
1098 | |
|
|
1099 | ev_start ((W)w, ++preparecnt); |
|
|
1100 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1101 | prepares [preparecnt - 1] = w; |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | void |
|
|
1105 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1106 | { |
|
|
1107 | ev_clear_pending ((W)w); |
|
|
1108 | if (ev_is_active (w)) |
|
|
1109 | return; |
|
|
1110 | |
|
|
1111 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1112 | ev_stop ((W)w); |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | void |
|
|
1116 | ev_check_start (struct ev_check *w) |
|
|
1117 | { |
|
|
1118 | if (ev_is_active (w)) |
|
|
1119 | return; |
|
|
1120 | |
|
|
1121 | ev_start ((W)w, ++checkcnt); |
|
|
1122 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1123 | checks [checkcnt - 1] = w; |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | void |
|
|
1127 | ev_check_stop (struct ev_check *w) |
|
|
1128 | { |
|
|
1129 | ev_clear_pending ((W)w); |
|
|
1130 | if (ev_is_active (w)) |
|
|
1131 | return; |
|
|
1132 | |
|
|
1133 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1134 | ev_stop ((W)w); |
|
|
1135 | } |
|
|
1136 | |
|
|
1137 | void |
|
|
1138 | ev_child_start (struct ev_child *w) |
|
|
1139 | { |
|
|
1140 | if (ev_is_active (w)) |
|
|
1141 | return; |
|
|
1142 | |
|
|
1143 | ev_start ((W)w, 1); |
|
|
1144 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | void |
|
|
1148 | ev_child_stop (struct ev_child *w) |
|
|
1149 | { |
|
|
1150 | ev_clear_pending ((W)w); |
|
|
1151 | if (ev_is_active (w)) |
|
|
1152 | return; |
|
|
1153 | |
|
|
1154 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1155 | ev_stop ((W)w); |
|
|
1156 | } |
|
|
1157 | |
|
|
1158 | /*****************************************************************************/ |
|
|
1159 | |
|
|
1160 | struct ev_once |
3691 | struct ev_once |
1161 | { |
3692 | { |
1162 | struct ev_io io; |
3693 | ev_io io; |
1163 | struct ev_timer to; |
3694 | ev_timer to; |
1164 | void (*cb)(int revents, void *arg); |
3695 | void (*cb)(int revents, void *arg); |
1165 | void *arg; |
3696 | void *arg; |
1166 | }; |
3697 | }; |
1167 | |
3698 | |
1168 | static void |
3699 | static void |
1169 | once_cb (struct ev_once *once, int revents) |
3700 | once_cb (EV_P_ struct ev_once *once, int revents) |
1170 | { |
3701 | { |
1171 | void (*cb)(int revents, void *arg) = once->cb; |
3702 | void (*cb)(int revents, void *arg) = once->cb; |
1172 | void *arg = once->arg; |
3703 | void *arg = once->arg; |
1173 | |
3704 | |
1174 | ev_io_stop (&once->io); |
3705 | ev_io_stop (EV_A_ &once->io); |
1175 | ev_timer_stop (&once->to); |
3706 | ev_timer_stop (EV_A_ &once->to); |
1176 | free (once); |
3707 | ev_free (once); |
1177 | |
3708 | |
1178 | cb (revents, arg); |
3709 | cb (revents, arg); |
1179 | } |
3710 | } |
1180 | |
3711 | |
1181 | static void |
3712 | static void |
1182 | once_cb_io (struct ev_io *w, int revents) |
3713 | once_cb_io (EV_P_ ev_io *w, int revents) |
1183 | { |
3714 | { |
1184 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3715 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3716 | |
|
|
3717 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1185 | } |
3718 | } |
1186 | |
3719 | |
1187 | static void |
3720 | static void |
1188 | once_cb_to (struct ev_timer *w, int revents) |
3721 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1189 | { |
3722 | { |
1190 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3723 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
1191 | } |
|
|
1192 | |
3724 | |
|
|
3725 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
3726 | } |
|
|
3727 | |
1193 | void |
3728 | void |
1194 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3729 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1195 | { |
3730 | { |
1196 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3731 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1197 | |
3732 | |
1198 | if (!once) |
3733 | if (expect_false (!once)) |
|
|
3734 | { |
1199 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3735 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1200 | else |
3736 | return; |
1201 | { |
3737 | } |
|
|
3738 | |
1202 | once->cb = cb; |
3739 | once->cb = cb; |
1203 | once->arg = arg; |
3740 | once->arg = arg; |
1204 | |
3741 | |
1205 | ev_watcher_init (&once->io, once_cb_io); |
3742 | ev_init (&once->io, once_cb_io); |
1206 | if (fd >= 0) |
3743 | if (fd >= 0) |
|
|
3744 | { |
|
|
3745 | ev_io_set (&once->io, fd, events); |
|
|
3746 | ev_io_start (EV_A_ &once->io); |
|
|
3747 | } |
|
|
3748 | |
|
|
3749 | ev_init (&once->to, once_cb_to); |
|
|
3750 | if (timeout >= 0.) |
|
|
3751 | { |
|
|
3752 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3753 | ev_timer_start (EV_A_ &once->to); |
|
|
3754 | } |
|
|
3755 | } |
|
|
3756 | |
|
|
3757 | /*****************************************************************************/ |
|
|
3758 | |
|
|
3759 | #if EV_WALK_ENABLE |
|
|
3760 | void |
|
|
3761 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3762 | { |
|
|
3763 | int i, j; |
|
|
3764 | ev_watcher_list *wl, *wn; |
|
|
3765 | |
|
|
3766 | if (types & (EV_IO | EV_EMBED)) |
|
|
3767 | for (i = 0; i < anfdmax; ++i) |
|
|
3768 | for (wl = anfds [i].head; wl; ) |
1207 | { |
3769 | { |
1208 | ev_io_set (&once->io, fd, events); |
3770 | wn = wl->next; |
1209 | ev_io_start (&once->io); |
3771 | |
|
|
3772 | #if EV_EMBED_ENABLE |
|
|
3773 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3774 | { |
|
|
3775 | if (types & EV_EMBED) |
|
|
3776 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3777 | } |
|
|
3778 | else |
|
|
3779 | #endif |
|
|
3780 | #if EV_USE_INOTIFY |
|
|
3781 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3782 | ; |
|
|
3783 | else |
|
|
3784 | #endif |
|
|
3785 | if ((ev_io *)wl != &pipe_w) |
|
|
3786 | if (types & EV_IO) |
|
|
3787 | cb (EV_A_ EV_IO, wl); |
|
|
3788 | |
|
|
3789 | wl = wn; |
1210 | } |
3790 | } |
1211 | |
3791 | |
1212 | ev_watcher_init (&once->to, once_cb_to); |
3792 | if (types & (EV_TIMER | EV_STAT)) |
1213 | if (timeout >= 0.) |
3793 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3794 | #if EV_STAT_ENABLE |
|
|
3795 | /*TODO: timer is not always active*/ |
|
|
3796 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1214 | { |
3797 | { |
1215 | ev_timer_set (&once->to, timeout, 0.); |
3798 | if (types & EV_STAT) |
1216 | ev_timer_start (&once->to); |
3799 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1217 | } |
3800 | } |
1218 | } |
3801 | else |
1219 | } |
3802 | #endif |
|
|
3803 | if (types & EV_TIMER) |
|
|
3804 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1220 | |
3805 | |
1221 | /*****************************************************************************/ |
3806 | #if EV_PERIODIC_ENABLE |
|
|
3807 | if (types & EV_PERIODIC) |
|
|
3808 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3809 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3810 | #endif |
1222 | |
3811 | |
1223 | #if 0 |
3812 | #if EV_IDLE_ENABLE |
|
|
3813 | if (types & EV_IDLE) |
|
|
3814 | for (j = NUMPRI; i--; ) |
|
|
3815 | for (i = idlecnt [j]; i--; ) |
|
|
3816 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3817 | #endif |
1224 | |
3818 | |
1225 | struct ev_io wio; |
3819 | #if EV_FORK_ENABLE |
|
|
3820 | if (types & EV_FORK) |
|
|
3821 | for (i = forkcnt; i--; ) |
|
|
3822 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3823 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3824 | #endif |
1226 | |
3825 | |
1227 | static void |
3826 | #if EV_ASYNC_ENABLE |
1228 | sin_cb (struct ev_io *w, int revents) |
3827 | if (types & EV_ASYNC) |
1229 | { |
3828 | for (i = asynccnt; i--; ) |
1230 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3829 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1231 | } |
3830 | #endif |
1232 | |
3831 | |
1233 | static void |
3832 | #if EV_PREPARE_ENABLE |
1234 | ocb (struct ev_timer *w, int revents) |
3833 | if (types & EV_PREPARE) |
1235 | { |
3834 | for (i = preparecnt; i--; ) |
1236 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3835 | # if EV_EMBED_ENABLE |
1237 | ev_timer_stop (w); |
3836 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1238 | ev_timer_start (w); |
|
|
1239 | } |
|
|
1240 | |
|
|
1241 | static void |
|
|
1242 | scb (struct ev_signal *w, int revents) |
|
|
1243 | { |
|
|
1244 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1245 | ev_io_stop (&wio); |
|
|
1246 | ev_io_start (&wio); |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | static void |
|
|
1250 | gcb (struct ev_signal *w, int revents) |
|
|
1251 | { |
|
|
1252 | fprintf (stderr, "generic %x\n", revents); |
|
|
1253 | |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | int main (void) |
|
|
1257 | { |
|
|
1258 | ev_init (0); |
|
|
1259 | |
|
|
1260 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1261 | ev_io_start (&wio); |
|
|
1262 | |
|
|
1263 | struct ev_timer t[10000]; |
|
|
1264 | |
|
|
1265 | #if 0 |
|
|
1266 | int i; |
|
|
1267 | for (i = 0; i < 10000; ++i) |
|
|
1268 | { |
|
|
1269 | struct ev_timer *w = t + i; |
|
|
1270 | ev_watcher_init (w, ocb, i); |
|
|
1271 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1272 | ev_timer_start (w); |
|
|
1273 | if (drand48 () < 0.5) |
|
|
1274 | ev_timer_stop (w); |
|
|
1275 | } |
|
|
1276 | #endif |
3837 | # endif |
1277 | |
3838 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1278 | struct ev_timer t1; |
|
|
1279 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1280 | ev_timer_start (&t1); |
|
|
1281 | |
|
|
1282 | struct ev_signal sig; |
|
|
1283 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1284 | ev_signal_start (&sig); |
|
|
1285 | |
|
|
1286 | struct ev_check cw; |
|
|
1287 | ev_check_init (&cw, gcb); |
|
|
1288 | ev_check_start (&cw); |
|
|
1289 | |
|
|
1290 | struct ev_idle iw; |
|
|
1291 | ev_idle_init (&iw, gcb); |
|
|
1292 | ev_idle_start (&iw); |
|
|
1293 | |
|
|
1294 | ev_loop (0); |
|
|
1295 | |
|
|
1296 | return 0; |
|
|
1297 | } |
|
|
1298 | |
|
|
1299 | #endif |
3839 | #endif |
1300 | |
3840 | |
|
|
3841 | #if EV_CHECK_ENABLE |
|
|
3842 | if (types & EV_CHECK) |
|
|
3843 | for (i = checkcnt; i--; ) |
|
|
3844 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3845 | #endif |
1301 | |
3846 | |
|
|
3847 | #if EV_SIGNAL_ENABLE |
|
|
3848 | if (types & EV_SIGNAL) |
|
|
3849 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3850 | for (wl = signals [i].head; wl; ) |
|
|
3851 | { |
|
|
3852 | wn = wl->next; |
|
|
3853 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3854 | wl = wn; |
|
|
3855 | } |
|
|
3856 | #endif |
1302 | |
3857 | |
|
|
3858 | #if EV_CHILD_ENABLE |
|
|
3859 | if (types & EV_CHILD) |
|
|
3860 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
3861 | for (wl = childs [i]; wl; ) |
|
|
3862 | { |
|
|
3863 | wn = wl->next; |
|
|
3864 | cb (EV_A_ EV_CHILD, wl); |
|
|
3865 | wl = wn; |
|
|
3866 | } |
|
|
3867 | #endif |
|
|
3868 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3869 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
3870 | } |
|
|
3871 | #endif |
1303 | |
3872 | |
|
|
3873 | #if EV_MULTIPLICITY |
|
|
3874 | #include "ev_wrap.h" |
|
|
3875 | #endif |
|
|
3876 | |
|
|
3877 | EV_CPP(}) |
|
|
3878 | |