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) 2007,2008,2009,2010,2011,2012 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: |
|
|
10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
|
|
18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
27 | * |
|
|
28 | * Alternatively, the contents of this file may be used under the terms of |
|
|
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
30 | * in which case the provisions of the GPL are applicable instead of |
|
|
31 | * the above. If you wish to allow the use of your version of this file |
|
|
32 | * only under the terms of the GPL and not to allow others to use your |
|
|
33 | * version of this file under the BSD license, indicate your decision |
|
|
34 | * by deleting the provisions above and replace them with the notice |
|
|
35 | * and other provisions required by the GPL. If you do not delete the |
|
|
36 | * provisions above, a recipient may use your version of this file under |
|
|
37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
|
|
39 | |
|
|
40 | /* this big block deduces configuration from config.h */ |
31 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
|
|
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_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
|
|
52 | #endif |
|
|
53 | |
|
|
54 | # if HAVE_CLOCK_SYSCALL |
|
|
55 | # ifndef EV_USE_CLOCK_SYSCALL |
|
|
56 | # define EV_USE_CLOCK_SYSCALL 1 |
|
|
57 | # ifndef EV_USE_REALTIME |
|
|
58 | # define EV_USE_REALTIME 0 |
|
|
59 | # endif |
|
|
60 | # ifndef EV_USE_MONOTONIC |
|
|
61 | # define EV_USE_MONOTONIC 1 |
|
|
62 | # endif |
|
|
63 | # endif |
|
|
64 | # elif !defined EV_USE_CLOCK_SYSCALL |
|
|
65 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
66 | # endif |
33 | |
67 | |
34 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
|
|
69 | # ifndef EV_USE_MONOTONIC |
35 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
|
|
71 | # endif |
|
|
72 | # ifndef EV_USE_REALTIME |
36 | # define EV_USE_REALTIME 1 |
73 | # define EV_USE_REALTIME 0 |
|
|
74 | # endif |
|
|
75 | # else |
|
|
76 | # ifndef EV_USE_MONOTONIC |
|
|
77 | # define EV_USE_MONOTONIC 0 |
|
|
78 | # endif |
|
|
79 | # ifndef EV_USE_REALTIME |
|
|
80 | # define EV_USE_REALTIME 0 |
|
|
81 | # endif |
37 | # endif |
82 | # endif |
38 | |
83 | |
|
|
84 | # if HAVE_NANOSLEEP |
|
|
85 | # ifndef EV_USE_NANOSLEEP |
|
|
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
87 | # endif |
|
|
88 | # else |
|
|
89 | # undef EV_USE_NANOSLEEP |
|
|
90 | # define EV_USE_NANOSLEEP 0 |
|
|
91 | # endif |
|
|
92 | |
39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
94 | # ifndef EV_USE_SELECT |
|
|
95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
|
|
96 | # endif |
|
|
97 | # else |
|
|
98 | # undef EV_USE_SELECT |
40 | # define EV_USE_SELECT 1 |
99 | # define EV_USE_SELECT 0 |
41 | # endif |
100 | # endif |
42 | |
101 | |
43 | # if HAVE_POLL && HAVE_POLL_H |
102 | # if HAVE_POLL && HAVE_POLL_H |
|
|
103 | # ifndef EV_USE_POLL |
|
|
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
105 | # endif |
|
|
106 | # else |
|
|
107 | # undef EV_USE_POLL |
44 | # define EV_USE_POLL 1 |
108 | # define EV_USE_POLL 0 |
45 | # endif |
109 | # endif |
46 | |
110 | |
47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
112 | # ifndef EV_USE_EPOLL |
|
|
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
114 | # endif |
|
|
115 | # else |
|
|
116 | # undef EV_USE_EPOLL |
48 | # define EV_USE_EPOLL 1 |
117 | # define EV_USE_EPOLL 0 |
49 | # endif |
118 | # endif |
50 | |
119 | |
51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
|
|
121 | # ifndef EV_USE_KQUEUE |
|
|
122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
|
|
123 | # endif |
|
|
124 | # else |
|
|
125 | # undef EV_USE_KQUEUE |
52 | # define EV_USE_KQUEUE 1 |
126 | # define EV_USE_KQUEUE 0 |
53 | # endif |
127 | # endif |
54 | |
128 | |
|
|
129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
130 | # ifndef EV_USE_PORT |
|
|
131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
|
|
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_PORT |
|
|
135 | # define EV_USE_PORT 0 |
55 | #endif |
136 | # endif |
56 | |
137 | |
57 | #include <math.h> |
138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
139 | # ifndef EV_USE_INOTIFY |
|
|
140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
141 | # endif |
|
|
142 | # else |
|
|
143 | # undef EV_USE_INOTIFY |
|
|
144 | # define EV_USE_INOTIFY 0 |
|
|
145 | # endif |
|
|
146 | |
|
|
147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
|
|
148 | # ifndef EV_USE_SIGNALFD |
|
|
149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
150 | # endif |
|
|
151 | # else |
|
|
152 | # undef EV_USE_SIGNALFD |
|
|
153 | # define EV_USE_SIGNALFD 0 |
|
|
154 | # endif |
|
|
155 | |
|
|
156 | # if HAVE_EVENTFD |
|
|
157 | # ifndef EV_USE_EVENTFD |
|
|
158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
159 | # endif |
|
|
160 | # else |
|
|
161 | # undef EV_USE_EVENTFD |
|
|
162 | # define EV_USE_EVENTFD 0 |
|
|
163 | # endif |
|
|
164 | |
|
|
165 | #endif |
|
|
166 | |
58 | #include <stdlib.h> |
167 | #include <stdlib.h> |
59 | #include <unistd.h> |
168 | #include <string.h> |
60 | #include <fcntl.h> |
169 | #include <fcntl.h> |
61 | #include <signal.h> |
|
|
62 | #include <stddef.h> |
170 | #include <stddef.h> |
63 | |
171 | |
64 | #include <stdio.h> |
172 | #include <stdio.h> |
65 | |
173 | |
66 | #include <assert.h> |
174 | #include <assert.h> |
67 | #include <errno.h> |
175 | #include <errno.h> |
68 | #include <sys/types.h> |
176 | #include <sys/types.h> |
|
|
177 | #include <time.h> |
|
|
178 | #include <limits.h> |
|
|
179 | |
|
|
180 | #include <signal.h> |
|
|
181 | |
|
|
182 | #ifdef EV_H |
|
|
183 | # include EV_H |
|
|
184 | #else |
|
|
185 | # include "ev.h" |
|
|
186 | #endif |
|
|
187 | |
|
|
188 | #if EV_NO_THREADS |
|
|
189 | # undef EV_NO_SMP |
|
|
190 | # define EV_NO_SMP 1 |
|
|
191 | # undef ECB_NO_THREADS |
|
|
192 | # define ECB_NO_THREADS 1 |
|
|
193 | #endif |
|
|
194 | #if EV_NO_SMP |
|
|
195 | # undef EV_NO_SMP |
|
|
196 | # define ECB_NO_SMP 1 |
|
|
197 | #endif |
|
|
198 | |
69 | #ifndef WIN32 |
199 | #ifndef _WIN32 |
|
|
200 | # include <sys/time.h> |
70 | # include <sys/wait.h> |
201 | # include <sys/wait.h> |
|
|
202 | # include <unistd.h> |
|
|
203 | #else |
|
|
204 | # include <io.h> |
|
|
205 | # define WIN32_LEAN_AND_MEAN |
|
|
206 | # include <winsock2.h> |
|
|
207 | # include <windows.h> |
|
|
208 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
209 | # define EV_SELECT_IS_WINSOCKET 1 |
71 | #endif |
210 | # endif |
72 | #include <sys/time.h> |
211 | # undef EV_AVOID_STDIO |
73 | #include <time.h> |
212 | #endif |
74 | |
213 | |
75 | /**/ |
214 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
|
215 | * a limit of 1024 into their select. Where people have brains, |
|
|
216 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
|
217 | * ordered to have a vacuum, or they do anything for money. |
|
|
218 | * This might help. Or not. |
|
|
219 | */ |
|
|
220 | #define _DARWIN_UNLIMITED_SELECT 1 |
|
|
221 | |
|
|
222 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
|
|
223 | |
|
|
224 | /* try to deduce the maximum number of signals on this platform */ |
|
|
225 | #if defined EV_NSIG |
|
|
226 | /* use what's provided */ |
|
|
227 | #elif defined NSIG |
|
|
228 | # define EV_NSIG (NSIG) |
|
|
229 | #elif defined _NSIG |
|
|
230 | # define EV_NSIG (_NSIG) |
|
|
231 | #elif defined SIGMAX |
|
|
232 | # define EV_NSIG (SIGMAX+1) |
|
|
233 | #elif defined SIG_MAX |
|
|
234 | # define EV_NSIG (SIG_MAX+1) |
|
|
235 | #elif defined _SIG_MAX |
|
|
236 | # define EV_NSIG (_SIG_MAX+1) |
|
|
237 | #elif defined MAXSIG |
|
|
238 | # define EV_NSIG (MAXSIG+1) |
|
|
239 | #elif defined MAX_SIG |
|
|
240 | # define EV_NSIG (MAX_SIG+1) |
|
|
241 | #elif defined SIGARRAYSIZE |
|
|
242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
|
|
243 | #elif defined _sys_nsig |
|
|
244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
|
245 | #else |
|
|
246 | # error "unable to find value for NSIG, please report" |
|
|
247 | /* to make it compile regardless, just remove the above line, */ |
|
|
248 | /* but consider reporting it, too! :) */ |
|
|
249 | # define EV_NSIG 65 |
|
|
250 | #endif |
|
|
251 | |
|
|
252 | #ifndef EV_USE_FLOOR |
|
|
253 | # define EV_USE_FLOOR 0 |
|
|
254 | #endif |
|
|
255 | |
|
|
256 | #ifndef EV_USE_CLOCK_SYSCALL |
|
|
257 | # if __linux && __GLIBC__ >= 2 |
|
|
258 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
|
|
259 | # else |
|
|
260 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
261 | # endif |
|
|
262 | #endif |
76 | |
263 | |
77 | #ifndef EV_USE_MONOTONIC |
264 | #ifndef EV_USE_MONOTONIC |
|
|
265 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
|
|
266 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
|
|
267 | # else |
78 | # define EV_USE_MONOTONIC 1 |
268 | # define EV_USE_MONOTONIC 0 |
|
|
269 | # endif |
|
|
270 | #endif |
|
|
271 | |
|
|
272 | #ifndef EV_USE_REALTIME |
|
|
273 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
|
|
274 | #endif |
|
|
275 | |
|
|
276 | #ifndef EV_USE_NANOSLEEP |
|
|
277 | # if _POSIX_C_SOURCE >= 199309L |
|
|
278 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
279 | # else |
|
|
280 | # define EV_USE_NANOSLEEP 0 |
|
|
281 | # endif |
79 | #endif |
282 | #endif |
80 | |
283 | |
81 | #ifndef EV_USE_SELECT |
284 | #ifndef EV_USE_SELECT |
82 | # define EV_USE_SELECT 1 |
285 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
83 | #endif |
286 | #endif |
84 | |
287 | |
85 | #ifndef EV_USE_POLL |
288 | #ifndef EV_USE_POLL |
86 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
289 | # ifdef _WIN32 |
|
|
290 | # define EV_USE_POLL 0 |
|
|
291 | # else |
|
|
292 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
293 | # endif |
87 | #endif |
294 | #endif |
88 | |
295 | |
89 | #ifndef EV_USE_EPOLL |
296 | #ifndef EV_USE_EPOLL |
|
|
297 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
298 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
299 | # else |
90 | # define EV_USE_EPOLL 0 |
300 | # define EV_USE_EPOLL 0 |
|
|
301 | # endif |
91 | #endif |
302 | #endif |
92 | |
303 | |
93 | #ifndef EV_USE_KQUEUE |
304 | #ifndef EV_USE_KQUEUE |
94 | # define EV_USE_KQUEUE 0 |
305 | # define EV_USE_KQUEUE 0 |
95 | #endif |
306 | #endif |
96 | |
307 | |
97 | #ifndef EV_USE_REALTIME |
308 | #ifndef EV_USE_PORT |
98 | # define EV_USE_REALTIME 1 |
309 | # define EV_USE_PORT 0 |
|
|
310 | #endif |
|
|
311 | |
|
|
312 | #ifndef EV_USE_INOTIFY |
|
|
313 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
314 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
315 | # else |
|
|
316 | # define EV_USE_INOTIFY 0 |
99 | #endif |
317 | # endif |
|
|
318 | #endif |
100 | |
319 | |
101 | /**/ |
320 | #ifndef EV_PID_HASHSIZE |
|
|
321 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
322 | #endif |
|
|
323 | |
|
|
324 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
325 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
326 | #endif |
|
|
327 | |
|
|
328 | #ifndef EV_USE_EVENTFD |
|
|
329 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
330 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
331 | # else |
|
|
332 | # define EV_USE_EVENTFD 0 |
|
|
333 | # endif |
|
|
334 | #endif |
|
|
335 | |
|
|
336 | #ifndef EV_USE_SIGNALFD |
|
|
337 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
338 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
339 | # else |
|
|
340 | # define EV_USE_SIGNALFD 0 |
|
|
341 | # endif |
|
|
342 | #endif |
|
|
343 | |
|
|
344 | #if 0 /* debugging */ |
|
|
345 | # define EV_VERIFY 3 |
|
|
346 | # define EV_USE_4HEAP 1 |
|
|
347 | # define EV_HEAP_CACHE_AT 1 |
|
|
348 | #endif |
|
|
349 | |
|
|
350 | #ifndef EV_VERIFY |
|
|
351 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
352 | #endif |
|
|
353 | |
|
|
354 | #ifndef EV_USE_4HEAP |
|
|
355 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
356 | #endif |
|
|
357 | |
|
|
358 | #ifndef EV_HEAP_CACHE_AT |
|
|
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
360 | #endif |
|
|
361 | |
|
|
362 | #ifdef ANDROID |
|
|
363 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
364 | # undef EV_USE_SELECT |
|
|
365 | # define EV_USE_SELECT 0 |
|
|
366 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
367 | # undef EV_USE_CLOCK_SYSCALL |
|
|
368 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
369 | #endif |
|
|
370 | |
|
|
371 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
372 | #ifdef _AIX |
|
|
373 | /* AIX has a completely broken poll.h header */ |
|
|
374 | # undef EV_USE_POLL |
|
|
375 | # define EV_USE_POLL 0 |
|
|
376 | #endif |
|
|
377 | |
|
|
378 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
379 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
380 | #if EV_USE_CLOCK_SYSCALL |
|
|
381 | # include <sys/syscall.h> |
|
|
382 | # ifdef SYS_clock_gettime |
|
|
383 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
384 | # undef EV_USE_MONOTONIC |
|
|
385 | # define EV_USE_MONOTONIC 1 |
|
|
386 | # else |
|
|
387 | # undef EV_USE_CLOCK_SYSCALL |
|
|
388 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
389 | # endif |
|
|
390 | #endif |
|
|
391 | |
|
|
392 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
102 | |
393 | |
103 | #ifndef CLOCK_MONOTONIC |
394 | #ifndef CLOCK_MONOTONIC |
104 | # undef EV_USE_MONOTONIC |
395 | # undef EV_USE_MONOTONIC |
105 | # define EV_USE_MONOTONIC 0 |
396 | # define EV_USE_MONOTONIC 0 |
106 | #endif |
397 | #endif |
… | |
… | |
108 | #ifndef CLOCK_REALTIME |
399 | #ifndef CLOCK_REALTIME |
109 | # undef EV_USE_REALTIME |
400 | # undef EV_USE_REALTIME |
110 | # define EV_USE_REALTIME 0 |
401 | # define EV_USE_REALTIME 0 |
111 | #endif |
402 | #endif |
112 | |
403 | |
|
|
404 | #if !EV_STAT_ENABLE |
|
|
405 | # undef EV_USE_INOTIFY |
|
|
406 | # define EV_USE_INOTIFY 0 |
|
|
407 | #endif |
|
|
408 | |
|
|
409 | #if !EV_USE_NANOSLEEP |
|
|
410 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
411 | # if !defined _WIN32 && !defined __hpux |
|
|
412 | # include <sys/select.h> |
|
|
413 | # endif |
|
|
414 | #endif |
|
|
415 | |
|
|
416 | #if EV_USE_INOTIFY |
|
|
417 | # include <sys/statfs.h> |
|
|
418 | # include <sys/inotify.h> |
|
|
419 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
420 | # ifndef IN_DONT_FOLLOW |
|
|
421 | # undef EV_USE_INOTIFY |
|
|
422 | # define EV_USE_INOTIFY 0 |
|
|
423 | # endif |
|
|
424 | #endif |
|
|
425 | |
|
|
426 | #if EV_USE_EVENTFD |
|
|
427 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
428 | # include <stdint.h> |
|
|
429 | # ifndef EFD_NONBLOCK |
|
|
430 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
431 | # endif |
|
|
432 | # ifndef EFD_CLOEXEC |
|
|
433 | # ifdef O_CLOEXEC |
|
|
434 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
435 | # else |
|
|
436 | # define EFD_CLOEXEC 02000000 |
|
|
437 | # endif |
|
|
438 | # endif |
|
|
439 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
440 | #endif |
|
|
441 | |
|
|
442 | #if EV_USE_SIGNALFD |
|
|
443 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
444 | # include <stdint.h> |
|
|
445 | # ifndef SFD_NONBLOCK |
|
|
446 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
447 | # endif |
|
|
448 | # ifndef SFD_CLOEXEC |
|
|
449 | # ifdef O_CLOEXEC |
|
|
450 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
451 | # else |
|
|
452 | # define SFD_CLOEXEC 02000000 |
|
|
453 | # endif |
|
|
454 | # endif |
|
|
455 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
456 | |
|
|
457 | struct signalfd_siginfo |
|
|
458 | { |
|
|
459 | uint32_t ssi_signo; |
|
|
460 | char pad[128 - sizeof (uint32_t)]; |
|
|
461 | }; |
|
|
462 | #endif |
|
|
463 | |
113 | /**/ |
464 | /**/ |
114 | |
465 | |
|
|
466 | #if EV_VERIFY >= 3 |
|
|
467 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
468 | #else |
|
|
469 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
470 | #endif |
|
|
471 | |
|
|
472 | /* |
|
|
473 | * This is used to work around floating point rounding problems. |
|
|
474 | * This value is good at least till the year 4000. |
|
|
475 | */ |
|
|
476 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
477 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
|
|
478 | |
115 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
479 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
116 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
480 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
117 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
118 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
|
|
119 | |
481 | |
120 | #include "ev.h" |
482 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
483 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
121 | |
484 | |
|
|
485 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
486 | /* ECB.H BEGIN */ |
|
|
487 | /* |
|
|
488 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
489 | * |
|
|
490 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
491 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
492 | * All rights reserved. |
|
|
493 | * |
|
|
494 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
495 | * tion, are permitted provided that the following conditions are met: |
|
|
496 | * |
|
|
497 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
498 | * this list of conditions and the following disclaimer. |
|
|
499 | * |
|
|
500 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
501 | * notice, this list of conditions and the following disclaimer in the |
|
|
502 | * documentation and/or other materials provided with the distribution. |
|
|
503 | * |
|
|
504 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
505 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
506 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
507 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
508 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
509 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
510 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
511 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
512 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
513 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
514 | */ |
|
|
515 | |
|
|
516 | #ifndef ECB_H |
|
|
517 | #define ECB_H |
|
|
518 | |
|
|
519 | /* 16 bits major, 16 bits minor */ |
|
|
520 | #define ECB_VERSION 0x00010003 |
|
|
521 | |
|
|
522 | #ifdef _WIN32 |
|
|
523 | typedef signed char int8_t; |
|
|
524 | typedef unsigned char uint8_t; |
|
|
525 | typedef signed short int16_t; |
|
|
526 | typedef unsigned short uint16_t; |
|
|
527 | typedef signed int int32_t; |
|
|
528 | typedef unsigned int uint32_t; |
122 | #if __GNUC__ >= 3 |
529 | #if __GNUC__ |
123 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
530 | typedef signed long long int64_t; |
124 | # define inline inline |
531 | typedef unsigned long long uint64_t; |
|
|
532 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
533 | typedef signed __int64 int64_t; |
|
|
534 | typedef unsigned __int64 uint64_t; |
|
|
535 | #endif |
|
|
536 | #ifdef _WIN64 |
|
|
537 | #define ECB_PTRSIZE 8 |
|
|
538 | typedef uint64_t uintptr_t; |
|
|
539 | typedef int64_t intptr_t; |
|
|
540 | #else |
|
|
541 | #define ECB_PTRSIZE 4 |
|
|
542 | typedef uint32_t uintptr_t; |
|
|
543 | typedef int32_t intptr_t; |
|
|
544 | #endif |
125 | #else |
545 | #else |
126 | # define expect(expr,value) (expr) |
546 | #include <inttypes.h> |
127 | # define inline static |
547 | #if UINTMAX_MAX > 0xffffffffU |
|
|
548 | #define ECB_PTRSIZE 8 |
|
|
549 | #else |
|
|
550 | #define ECB_PTRSIZE 4 |
128 | #endif |
551 | #endif |
|
|
552 | #endif |
129 | |
553 | |
130 | #define expect_false(expr) expect ((expr) != 0, 0) |
554 | /* work around x32 idiocy by defining proper macros */ |
131 | #define expect_true(expr) expect ((expr) != 0, 1) |
555 | #if __x86_64 || _M_AMD64 |
|
|
556 | #if __ILP32 |
|
|
557 | #define ECB_AMD64_X32 1 |
|
|
558 | #else |
|
|
559 | #define ECB_AMD64 1 |
|
|
560 | #endif |
|
|
561 | #endif |
132 | |
562 | |
133 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
563 | /* many compilers define _GNUC_ to some versions but then only implement |
134 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
564 | * what their idiot authors think are the "more important" extensions, |
|
|
565 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
566 | * or so. |
|
|
567 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
568 | * an issue with that they should have done it right in the first place. |
|
|
569 | */ |
|
|
570 | #ifndef ECB_GCC_VERSION |
|
|
571 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
572 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
573 | #else |
|
|
574 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
575 | #endif |
|
|
576 | #endif |
135 | |
577 | |
136 | typedef struct ev_watcher *W; |
578 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
137 | typedef struct ev_watcher_list *WL; |
579 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
138 | typedef struct ev_watcher_time *WT; |
580 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
|
|
581 | #define ECB_CPP (__cplusplus+0) |
|
|
582 | #define ECB_CPP11 (__cplusplus >= 201103L) |
139 | |
583 | |
140 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
584 | #if ECB_CPP |
|
|
585 | #define ECB_EXTERN_C extern "C" |
|
|
586 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
587 | #define ECB_EXTERN_C_END } |
|
|
588 | #else |
|
|
589 | #define ECB_EXTERN_C extern |
|
|
590 | #define ECB_EXTERN_C_BEG |
|
|
591 | #define ECB_EXTERN_C_END |
|
|
592 | #endif |
141 | |
593 | |
142 | /*****************************************************************************/ |
594 | /*****************************************************************************/ |
143 | |
595 | |
|
|
596 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
597 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
598 | |
|
|
599 | #if ECB_NO_THREADS |
|
|
600 | #define ECB_NO_SMP 1 |
|
|
601 | #endif |
|
|
602 | |
|
|
603 | #if ECB_NO_SMP |
|
|
604 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
605 | #endif |
|
|
606 | |
|
|
607 | #ifndef ECB_MEMORY_FENCE |
|
|
608 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
609 | #if __i386 || __i386__ |
|
|
610 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
611 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
612 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
613 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
|
|
614 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
615 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
616 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
617 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
618 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
619 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
620 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
|
|
621 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
622 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
623 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
|
|
624 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
625 | #elif __sparc || __sparc__ |
|
|
626 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
627 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
628 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
629 | #elif defined __s390__ || defined __s390x__ |
|
|
630 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
631 | #elif defined __mips__ |
|
|
632 | /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */ |
|
|
633 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
634 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
635 | #elif defined __alpha__ |
|
|
636 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
637 | #elif defined __hppa__ |
|
|
638 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
639 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
640 | #elif defined __ia64__ |
|
|
641 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
642 | #endif |
|
|
643 | #endif |
|
|
644 | #endif |
|
|
645 | |
|
|
646 | #ifndef ECB_MEMORY_FENCE |
|
|
647 | #if ECB_GCC_VERSION(4,7) |
|
|
648 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
649 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
650 | |
|
|
651 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
|
|
652 | * without risking compile time errors with other compilers. We *could* |
|
|
653 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
654 | * around this shit time and again. |
|
|
655 | * #elif defined __clang && __has_feature (cxx_atomic) |
|
|
656 | * // see comment below (stdatomic.h) about the C11 memory model. |
|
|
657 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
658 | */ |
|
|
659 | |
|
|
660 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
661 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
662 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
663 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
664 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
665 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
666 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
667 | #elif defined _WIN32 |
|
|
668 | #include <WinNT.h> |
|
|
669 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
670 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
671 | #include <mbarrier.h> |
|
|
672 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
673 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
674 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
675 | #elif __xlC__ |
|
|
676 | #define ECB_MEMORY_FENCE __sync () |
|
|
677 | #endif |
|
|
678 | #endif |
|
|
679 | |
|
|
680 | #ifndef ECB_MEMORY_FENCE |
|
|
681 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
682 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
683 | /* not just C11 atomics and atomic accesses */ |
|
|
684 | #include <stdatomic.h> |
|
|
685 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
686 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
687 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
688 | /* for most usages, or gcc and clang have a bug */ |
|
|
689 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
690 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
691 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
692 | #endif |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | #ifndef ECB_MEMORY_FENCE |
|
|
696 | #if !ECB_AVOID_PTHREADS |
|
|
697 | /* |
|
|
698 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
699 | * or failure to find pthread.h, then you should implement |
|
|
700 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
701 | * OR provide pthread.h and link against the posix thread library |
|
|
702 | * of your system. |
|
|
703 | */ |
|
|
704 | #include <pthread.h> |
|
|
705 | #define ECB_NEEDS_PTHREADS 1 |
|
|
706 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
707 | |
|
|
708 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
709 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
710 | #endif |
|
|
711 | #endif |
|
|
712 | |
|
|
713 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
714 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
715 | #endif |
|
|
716 | |
|
|
717 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
718 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
719 | #endif |
|
|
720 | |
|
|
721 | /*****************************************************************************/ |
|
|
722 | |
|
|
723 | #if __cplusplus |
|
|
724 | #define ecb_inline static inline |
|
|
725 | #elif ECB_GCC_VERSION(2,5) |
|
|
726 | #define ecb_inline static __inline__ |
|
|
727 | #elif ECB_C99 |
|
|
728 | #define ecb_inline static inline |
|
|
729 | #else |
|
|
730 | #define ecb_inline static |
|
|
731 | #endif |
|
|
732 | |
|
|
733 | #if ECB_GCC_VERSION(3,3) |
|
|
734 | #define ecb_restrict __restrict__ |
|
|
735 | #elif ECB_C99 |
|
|
736 | #define ecb_restrict restrict |
|
|
737 | #else |
|
|
738 | #define ecb_restrict |
|
|
739 | #endif |
|
|
740 | |
|
|
741 | typedef int ecb_bool; |
|
|
742 | |
|
|
743 | #define ECB_CONCAT_(a, b) a ## b |
|
|
744 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
745 | #define ECB_STRINGIFY_(a) # a |
|
|
746 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
747 | |
|
|
748 | #define ecb_function_ ecb_inline |
|
|
749 | |
|
|
750 | #if ECB_GCC_VERSION(3,1) |
|
|
751 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
752 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
753 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
754 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
755 | #else |
|
|
756 | #define ecb_attribute(attrlist) |
|
|
757 | #define ecb_is_constant(expr) 0 |
|
|
758 | #define ecb_expect(expr,value) (expr) |
|
|
759 | #define ecb_prefetch(addr,rw,locality) |
|
|
760 | #endif |
|
|
761 | |
|
|
762 | /* no emulation for ecb_decltype */ |
|
|
763 | #if ECB_GCC_VERSION(4,5) |
|
|
764 | #define ecb_decltype(x) __decltype(x) |
|
|
765 | #elif ECB_GCC_VERSION(3,0) |
|
|
766 | #define ecb_decltype(x) __typeof(x) |
|
|
767 | #endif |
|
|
768 | |
|
|
769 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
770 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
771 | #define ecb_const ecb_attribute ((__const__)) |
|
|
772 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
773 | |
|
|
774 | #if ECB_C11 |
|
|
775 | #define ecb_noreturn _Noreturn |
|
|
776 | #else |
|
|
777 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
778 | #endif |
|
|
779 | |
|
|
780 | #if ECB_GCC_VERSION(4,3) |
|
|
781 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
782 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
783 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
784 | #else |
|
|
785 | #define ecb_artificial |
|
|
786 | #define ecb_hot |
|
|
787 | #define ecb_cold |
|
|
788 | #endif |
|
|
789 | |
|
|
790 | /* put around conditional expressions if you are very sure that the */ |
|
|
791 | /* expression is mostly true or mostly false. note that these return */ |
|
|
792 | /* booleans, not the expression. */ |
|
|
793 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
794 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
795 | /* for compatibility to the rest of the world */ |
|
|
796 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
797 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
798 | |
|
|
799 | /* count trailing zero bits and count # of one bits */ |
|
|
800 | #if ECB_GCC_VERSION(3,4) |
|
|
801 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
802 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
803 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
804 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
805 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
806 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
807 | /* no popcountll */ |
|
|
808 | #else |
|
|
809 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
810 | ecb_function_ int |
|
|
811 | ecb_ctz32 (uint32_t x) |
|
|
812 | { |
|
|
813 | int r = 0; |
|
|
814 | |
|
|
815 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
816 | |
|
|
817 | #if ECB_branchless_on_i386 |
|
|
818 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
819 | r += !!(x & 0xcccccccc) << 1; |
|
|
820 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
821 | r += !!(x & 0xff00ff00) << 3; |
|
|
822 | r += !!(x & 0xffff0000) << 4; |
|
|
823 | #else |
|
|
824 | if (x & 0xaaaaaaaa) r += 1; |
|
|
825 | if (x & 0xcccccccc) r += 2; |
|
|
826 | if (x & 0xf0f0f0f0) r += 4; |
|
|
827 | if (x & 0xff00ff00) r += 8; |
|
|
828 | if (x & 0xffff0000) r += 16; |
|
|
829 | #endif |
|
|
830 | |
|
|
831 | return r; |
|
|
832 | } |
|
|
833 | |
|
|
834 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
835 | ecb_function_ int |
|
|
836 | ecb_ctz64 (uint64_t x) |
|
|
837 | { |
|
|
838 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
839 | return ecb_ctz32 (x >> shift) + shift; |
|
|
840 | } |
|
|
841 | |
|
|
842 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
843 | ecb_function_ int |
|
|
844 | ecb_popcount32 (uint32_t x) |
|
|
845 | { |
|
|
846 | x -= (x >> 1) & 0x55555555; |
|
|
847 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
848 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
849 | x *= 0x01010101; |
|
|
850 | |
|
|
851 | return x >> 24; |
|
|
852 | } |
|
|
853 | |
|
|
854 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
855 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
856 | { |
|
|
857 | int r = 0; |
|
|
858 | |
|
|
859 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
860 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
861 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
862 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
863 | if (x >> 1) { r += 1; } |
|
|
864 | |
|
|
865 | return r; |
|
|
866 | } |
|
|
867 | |
|
|
868 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
869 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
870 | { |
|
|
871 | int r = 0; |
|
|
872 | |
|
|
873 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
874 | |
|
|
875 | return r + ecb_ld32 (x); |
|
|
876 | } |
|
|
877 | #endif |
|
|
878 | |
|
|
879 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
|
|
880 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
881 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
|
|
882 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
883 | |
|
|
884 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
885 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
886 | { |
|
|
887 | return ( (x * 0x0802U & 0x22110U) |
|
|
888 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
889 | } |
|
|
890 | |
|
|
891 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
892 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
893 | { |
|
|
894 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
895 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
896 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
897 | x = ( x >> 8 ) | ( x << 8); |
|
|
898 | |
|
|
899 | return x; |
|
|
900 | } |
|
|
901 | |
|
|
902 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
903 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
904 | { |
|
|
905 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
906 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
907 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
908 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
909 | x = ( x >> 16 ) | ( x << 16); |
|
|
910 | |
|
|
911 | return x; |
|
|
912 | } |
|
|
913 | |
|
|
914 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
915 | /* so for this version we are lazy */ |
|
|
916 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
917 | ecb_function_ int |
|
|
918 | ecb_popcount64 (uint64_t x) |
|
|
919 | { |
|
|
920 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
921 | } |
|
|
922 | |
|
|
923 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
924 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
925 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
926 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
927 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
928 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
929 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
930 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
931 | |
|
|
932 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
933 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
934 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
935 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
936 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
937 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
938 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
939 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
940 | |
|
|
941 | #if ECB_GCC_VERSION(4,3) |
|
|
942 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
943 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
944 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
945 | #else |
|
|
946 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
947 | ecb_function_ uint16_t |
|
|
948 | ecb_bswap16 (uint16_t x) |
|
|
949 | { |
|
|
950 | return ecb_rotl16 (x, 8); |
|
|
951 | } |
|
|
952 | |
|
|
953 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
954 | ecb_function_ uint32_t |
|
|
955 | ecb_bswap32 (uint32_t x) |
|
|
956 | { |
|
|
957 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
958 | } |
|
|
959 | |
|
|
960 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
961 | ecb_function_ uint64_t |
|
|
962 | ecb_bswap64 (uint64_t x) |
|
|
963 | { |
|
|
964 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
965 | } |
|
|
966 | #endif |
|
|
967 | |
|
|
968 | #if ECB_GCC_VERSION(4,5) |
|
|
969 | #define ecb_unreachable() __builtin_unreachable () |
|
|
970 | #else |
|
|
971 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
972 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
|
|
973 | ecb_inline void ecb_unreachable (void) { } |
|
|
974 | #endif |
|
|
975 | |
|
|
976 | /* try to tell the compiler that some condition is definitely true */ |
|
|
977 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
978 | |
|
|
979 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
980 | ecb_inline unsigned char |
|
|
981 | ecb_byteorder_helper (void) |
|
|
982 | { |
|
|
983 | /* the union code still generates code under pressure in gcc, */ |
|
|
984 | /* but less than using pointers, and always seems to */ |
|
|
985 | /* successfully return a constant. */ |
|
|
986 | /* the reason why we have this horrible preprocessor mess */ |
|
|
987 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
988 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
989 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
990 | return 0x44; |
|
|
991 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
992 | return 0x44; |
|
|
993 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
994 | return 0x11; |
|
|
995 | #else |
|
|
996 | union |
|
|
997 | { |
|
|
998 | uint32_t i; |
|
|
999 | uint8_t c; |
|
|
1000 | } u = { 0x11223344 }; |
|
|
1001 | return u.c; |
|
|
1002 | #endif |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
1006 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
1007 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
|
|
1008 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
1009 | |
|
|
1010 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1011 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1012 | #else |
|
|
1013 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1014 | #endif |
|
|
1015 | |
|
|
1016 | #if __cplusplus |
|
|
1017 | template<typename T> |
|
|
1018 | static inline T ecb_div_rd (T val, T div) |
|
|
1019 | { |
|
|
1020 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1021 | } |
|
|
1022 | template<typename T> |
|
|
1023 | static inline T ecb_div_ru (T val, T div) |
|
|
1024 | { |
|
|
1025 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1026 | } |
|
|
1027 | #else |
|
|
1028 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1029 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1030 | #endif |
|
|
1031 | |
|
|
1032 | #if ecb_cplusplus_does_not_suck |
|
|
1033 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1034 | template<typename T, int N> |
|
|
1035 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1036 | { |
|
|
1037 | return N; |
|
|
1038 | } |
|
|
1039 | #else |
|
|
1040 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1041 | #endif |
|
|
1042 | |
|
|
1043 | /*******************************************************************************/ |
|
|
1044 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1045 | |
|
|
1046 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1047 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1048 | #if 0 \ |
|
|
1049 | || __i386 || __i386__ \ |
|
|
1050 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1051 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1052 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
1053 | || defined __s390__ || defined __s390x__ \ |
|
|
1054 | || defined __mips__ \ |
|
|
1055 | || defined __alpha__ \ |
|
|
1056 | || defined __hppa__ \ |
|
|
1057 | || defined __ia64__ \ |
|
|
1058 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
|
|
1059 | #define ECB_STDFP 1 |
|
|
1060 | #include <string.h> /* for memcpy */ |
|
|
1061 | #else |
|
|
1062 | #define ECB_STDFP 0 |
|
|
1063 | #include <math.h> /* for frexp*, ldexp* */ |
|
|
1064 | #endif |
|
|
1065 | |
|
|
1066 | #ifndef ECB_NO_LIBM |
|
|
1067 | |
|
|
1068 | /* convert a float to ieee single/binary32 */ |
|
|
1069 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1070 | ecb_function_ uint32_t |
|
|
1071 | ecb_float_to_binary32 (float x) |
|
|
1072 | { |
|
|
1073 | uint32_t r; |
|
|
1074 | |
|
|
1075 | #if ECB_STDFP |
|
|
1076 | memcpy (&r, &x, 4); |
|
|
1077 | #else |
|
|
1078 | /* slow emulation, works for anything but -0 */ |
|
|
1079 | uint32_t m; |
|
|
1080 | int e; |
|
|
1081 | |
|
|
1082 | if (x == 0e0f ) return 0x00000000U; |
|
|
1083 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1084 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1085 | if (x != x ) return 0x7fbfffffU; |
|
|
1086 | |
|
|
1087 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1088 | |
|
|
1089 | r = m & 0x80000000U; |
|
|
1090 | |
|
|
1091 | if (r) |
|
|
1092 | m = -m; |
|
|
1093 | |
|
|
1094 | if (e <= -126) |
|
|
1095 | { |
|
|
1096 | m &= 0xffffffU; |
|
|
1097 | m >>= (-125 - e); |
|
|
1098 | e = -126; |
|
|
1099 | } |
|
|
1100 | |
|
|
1101 | r |= (e + 126) << 23; |
|
|
1102 | r |= m & 0x7fffffU; |
|
|
1103 | #endif |
|
|
1104 | |
|
|
1105 | return r; |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | /* converts an ieee single/binary32 to a float */ |
|
|
1109 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1110 | ecb_function_ float |
|
|
1111 | ecb_binary32_to_float (uint32_t x) |
|
|
1112 | { |
|
|
1113 | float r; |
|
|
1114 | |
|
|
1115 | #if ECB_STDFP |
|
|
1116 | memcpy (&r, &x, 4); |
|
|
1117 | #else |
|
|
1118 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1119 | int neg = x >> 31; |
|
|
1120 | int e = (x >> 23) & 0xffU; |
|
|
1121 | |
|
|
1122 | x &= 0x7fffffU; |
|
|
1123 | |
|
|
1124 | if (e) |
|
|
1125 | x |= 0x800000U; |
|
|
1126 | else |
|
|
1127 | e = 1; |
|
|
1128 | |
|
|
1129 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1130 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1131 | |
|
|
1132 | r = neg ? -r : r; |
|
|
1133 | #endif |
|
|
1134 | |
|
|
1135 | return r; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | /* convert a double to ieee double/binary64 */ |
|
|
1139 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1140 | ecb_function_ uint64_t |
|
|
1141 | ecb_double_to_binary64 (double x) |
|
|
1142 | { |
|
|
1143 | uint64_t r; |
|
|
1144 | |
|
|
1145 | #if ECB_STDFP |
|
|
1146 | memcpy (&r, &x, 8); |
|
|
1147 | #else |
|
|
1148 | /* slow emulation, works for anything but -0 */ |
|
|
1149 | uint64_t m; |
|
|
1150 | int e; |
|
|
1151 | |
|
|
1152 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1153 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1154 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1155 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1156 | |
|
|
1157 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1158 | |
|
|
1159 | r = m & 0x8000000000000000;; |
|
|
1160 | |
|
|
1161 | if (r) |
|
|
1162 | m = -m; |
|
|
1163 | |
|
|
1164 | if (e <= -1022) |
|
|
1165 | { |
|
|
1166 | m &= 0x1fffffffffffffU; |
|
|
1167 | m >>= (-1021 - e); |
|
|
1168 | e = -1022; |
|
|
1169 | } |
|
|
1170 | |
|
|
1171 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1172 | r |= m & 0xfffffffffffffU; |
|
|
1173 | #endif |
|
|
1174 | |
|
|
1175 | return r; |
|
|
1176 | } |
|
|
1177 | |
|
|
1178 | /* converts an ieee double/binary64 to a double */ |
|
|
1179 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1180 | ecb_function_ double |
|
|
1181 | ecb_binary64_to_double (uint64_t x) |
|
|
1182 | { |
|
|
1183 | double r; |
|
|
1184 | |
|
|
1185 | #if ECB_STDFP |
|
|
1186 | memcpy (&r, &x, 8); |
|
|
1187 | #else |
|
|
1188 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1189 | int neg = x >> 63; |
|
|
1190 | int e = (x >> 52) & 0x7ffU; |
|
|
1191 | |
|
|
1192 | x &= 0xfffffffffffffU; |
|
|
1193 | |
|
|
1194 | if (e) |
|
|
1195 | x |= 0x10000000000000U; |
|
|
1196 | else |
|
|
1197 | e = 1; |
|
|
1198 | |
|
|
1199 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1200 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1201 | |
|
|
1202 | r = neg ? -r : r; |
|
|
1203 | #endif |
|
|
1204 | |
|
|
1205 | return r; |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | #endif |
|
|
1209 | |
|
|
1210 | #endif |
|
|
1211 | |
|
|
1212 | /* ECB.H END */ |
|
|
1213 | |
|
|
1214 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1215 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1216 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1217 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1218 | * libev, in which cases the memory fences become nops. |
|
|
1219 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1220 | * which will then provide the memory fences. |
|
|
1221 | */ |
|
|
1222 | # error "memory fences not defined for your architecture, please report" |
|
|
1223 | #endif |
|
|
1224 | |
|
|
1225 | #ifndef ECB_MEMORY_FENCE |
|
|
1226 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1227 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1228 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1229 | #endif |
|
|
1230 | |
|
|
1231 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1232 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1233 | #define noinline ecb_noinline |
|
|
1234 | |
|
|
1235 | #define inline_size ecb_inline |
|
|
1236 | |
|
|
1237 | #if EV_FEATURE_CODE |
|
|
1238 | # define inline_speed ecb_inline |
|
|
1239 | #else |
|
|
1240 | # define inline_speed static noinline |
|
|
1241 | #endif |
|
|
1242 | |
|
|
1243 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1244 | |
|
|
1245 | #if EV_MINPRI == EV_MAXPRI |
|
|
1246 | # define ABSPRI(w) (((W)w), 0) |
|
|
1247 | #else |
|
|
1248 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1249 | #endif |
|
|
1250 | |
|
|
1251 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1252 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
1253 | |
|
|
1254 | typedef ev_watcher *W; |
|
|
1255 | typedef ev_watcher_list *WL; |
|
|
1256 | typedef ev_watcher_time *WT; |
|
|
1257 | |
|
|
1258 | #define ev_active(w) ((W)(w))->active |
|
|
1259 | #define ev_at(w) ((WT)(w))->at |
|
|
1260 | |
|
|
1261 | #if EV_USE_REALTIME |
|
|
1262 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1263 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1264 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1265 | #endif |
|
|
1266 | |
|
|
1267 | #if EV_USE_MONOTONIC |
|
|
1268 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1269 | #endif |
|
|
1270 | |
|
|
1271 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1272 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1273 | #endif |
|
|
1274 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1275 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1276 | #endif |
|
|
1277 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1278 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1279 | #endif |
|
|
1280 | |
|
|
1281 | #ifdef _WIN32 |
|
|
1282 | # include "ev_win32.c" |
|
|
1283 | #endif |
|
|
1284 | |
|
|
1285 | /*****************************************************************************/ |
|
|
1286 | |
|
|
1287 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1288 | |
|
|
1289 | #if EV_USE_FLOOR |
|
|
1290 | # include <math.h> |
|
|
1291 | # define ev_floor(v) floor (v) |
|
|
1292 | #else |
|
|
1293 | |
|
|
1294 | #include <float.h> |
|
|
1295 | |
|
|
1296 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1297 | static ev_tstamp noinline |
|
|
1298 | ev_floor (ev_tstamp v) |
|
|
1299 | { |
|
|
1300 | /* the choice of shift factor is not terribly important */ |
|
|
1301 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1302 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1303 | #else |
|
|
1304 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1305 | #endif |
|
|
1306 | |
|
|
1307 | /* argument too large for an unsigned long? */ |
|
|
1308 | if (expect_false (v >= shift)) |
|
|
1309 | { |
|
|
1310 | ev_tstamp f; |
|
|
1311 | |
|
|
1312 | if (v == v - 1.) |
|
|
1313 | return v; /* very large number */ |
|
|
1314 | |
|
|
1315 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1316 | return f + ev_floor (v - f); |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | /* special treatment for negative args? */ |
|
|
1320 | if (expect_false (v < 0.)) |
|
|
1321 | { |
|
|
1322 | ev_tstamp f = -ev_floor (-v); |
|
|
1323 | |
|
|
1324 | return f - (f == v ? 0 : 1); |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | /* fits into an unsigned long */ |
|
|
1328 | return (unsigned long)v; |
|
|
1329 | } |
|
|
1330 | |
|
|
1331 | #endif |
|
|
1332 | |
|
|
1333 | /*****************************************************************************/ |
|
|
1334 | |
|
|
1335 | #ifdef __linux |
|
|
1336 | # include <sys/utsname.h> |
|
|
1337 | #endif |
|
|
1338 | |
|
|
1339 | static unsigned int noinline ecb_cold |
|
|
1340 | ev_linux_version (void) |
|
|
1341 | { |
|
|
1342 | #ifdef __linux |
|
|
1343 | unsigned int v = 0; |
|
|
1344 | struct utsname buf; |
|
|
1345 | int i; |
|
|
1346 | char *p = buf.release; |
|
|
1347 | |
|
|
1348 | if (uname (&buf)) |
|
|
1349 | return 0; |
|
|
1350 | |
|
|
1351 | for (i = 3+1; --i; ) |
|
|
1352 | { |
|
|
1353 | unsigned int c = 0; |
|
|
1354 | |
|
|
1355 | for (;;) |
|
|
1356 | { |
|
|
1357 | if (*p >= '0' && *p <= '9') |
|
|
1358 | c = c * 10 + *p++ - '0'; |
|
|
1359 | else |
|
|
1360 | { |
|
|
1361 | p += *p == '.'; |
|
|
1362 | break; |
|
|
1363 | } |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | v = (v << 8) | c; |
|
|
1367 | } |
|
|
1368 | |
|
|
1369 | return v; |
|
|
1370 | #else |
|
|
1371 | return 0; |
|
|
1372 | #endif |
|
|
1373 | } |
|
|
1374 | |
|
|
1375 | /*****************************************************************************/ |
|
|
1376 | |
|
|
1377 | #if EV_AVOID_STDIO |
|
|
1378 | static void noinline ecb_cold |
|
|
1379 | ev_printerr (const char *msg) |
|
|
1380 | { |
|
|
1381 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1382 | } |
|
|
1383 | #endif |
|
|
1384 | |
|
|
1385 | static void (*syserr_cb)(const char *msg) EV_THROW; |
|
|
1386 | |
|
|
1387 | void ecb_cold |
|
|
1388 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
|
|
1389 | { |
|
|
1390 | syserr_cb = cb; |
|
|
1391 | } |
|
|
1392 | |
|
|
1393 | static void noinline ecb_cold |
|
|
1394 | ev_syserr (const char *msg) |
|
|
1395 | { |
|
|
1396 | if (!msg) |
|
|
1397 | msg = "(libev) system error"; |
|
|
1398 | |
|
|
1399 | if (syserr_cb) |
|
|
1400 | syserr_cb (msg); |
|
|
1401 | else |
|
|
1402 | { |
|
|
1403 | #if EV_AVOID_STDIO |
|
|
1404 | ev_printerr (msg); |
|
|
1405 | ev_printerr (": "); |
|
|
1406 | ev_printerr (strerror (errno)); |
|
|
1407 | ev_printerr ("\n"); |
|
|
1408 | #else |
|
|
1409 | perror (msg); |
|
|
1410 | #endif |
|
|
1411 | abort (); |
|
|
1412 | } |
|
|
1413 | } |
|
|
1414 | |
|
|
1415 | static void * |
|
|
1416 | ev_realloc_emul (void *ptr, long size) EV_THROW |
|
|
1417 | { |
|
|
1418 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1419 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1420 | * the single unix specification, so work around them here. |
|
|
1421 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1422 | * despite documenting it otherwise. |
|
|
1423 | */ |
|
|
1424 | |
|
|
1425 | if (size) |
|
|
1426 | return realloc (ptr, size); |
|
|
1427 | |
|
|
1428 | free (ptr); |
|
|
1429 | return 0; |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
|
|
1433 | |
|
|
1434 | void ecb_cold |
|
|
1435 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
|
|
1436 | { |
|
|
1437 | alloc = cb; |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | inline_speed void * |
|
|
1441 | ev_realloc (void *ptr, long size) |
|
|
1442 | { |
|
|
1443 | ptr = alloc (ptr, size); |
|
|
1444 | |
|
|
1445 | if (!ptr && size) |
|
|
1446 | { |
|
|
1447 | #if EV_AVOID_STDIO |
|
|
1448 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1449 | #else |
|
|
1450 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1451 | #endif |
|
|
1452 | abort (); |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | return ptr; |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
1459 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
1460 | |
|
|
1461 | /*****************************************************************************/ |
|
|
1462 | |
|
|
1463 | /* set in reify when reification needed */ |
|
|
1464 | #define EV_ANFD_REIFY 1 |
|
|
1465 | |
|
|
1466 | /* file descriptor info structure */ |
144 | typedef struct |
1467 | typedef struct |
145 | { |
1468 | { |
146 | struct ev_watcher_list *head; |
1469 | WL head; |
147 | unsigned char events; |
1470 | unsigned char events; /* the events watched for */ |
|
|
1471 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1472 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
148 | unsigned char reify; |
1473 | unsigned char unused; |
|
|
1474 | #if EV_USE_EPOLL |
|
|
1475 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1476 | #endif |
|
|
1477 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1478 | SOCKET handle; |
|
|
1479 | #endif |
|
|
1480 | #if EV_USE_IOCP |
|
|
1481 | OVERLAPPED or, ow; |
|
|
1482 | #endif |
149 | } ANFD; |
1483 | } ANFD; |
150 | |
1484 | |
|
|
1485 | /* stores the pending event set for a given watcher */ |
151 | typedef struct |
1486 | typedef struct |
152 | { |
1487 | { |
153 | W w; |
1488 | W w; |
154 | int events; |
1489 | int events; /* the pending event set for the given watcher */ |
155 | } ANPENDING; |
1490 | } ANPENDING; |
156 | |
1491 | |
|
|
1492 | #if EV_USE_INOTIFY |
|
|
1493 | /* hash table entry per inotify-id */ |
|
|
1494 | typedef struct |
|
|
1495 | { |
|
|
1496 | WL head; |
|
|
1497 | } ANFS; |
|
|
1498 | #endif |
|
|
1499 | |
|
|
1500 | /* Heap Entry */ |
|
|
1501 | #if EV_HEAP_CACHE_AT |
|
|
1502 | /* a heap element */ |
|
|
1503 | typedef struct { |
|
|
1504 | ev_tstamp at; |
|
|
1505 | WT w; |
|
|
1506 | } ANHE; |
|
|
1507 | |
|
|
1508 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1509 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1510 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1511 | #else |
|
|
1512 | /* a heap element */ |
|
|
1513 | typedef WT ANHE; |
|
|
1514 | |
|
|
1515 | #define ANHE_w(he) (he) |
|
|
1516 | #define ANHE_at(he) (he)->at |
|
|
1517 | #define ANHE_at_cache(he) |
|
|
1518 | #endif |
|
|
1519 | |
157 | #if EV_MULTIPLICITY |
1520 | #if EV_MULTIPLICITY |
158 | |
1521 | |
159 | struct ev_loop |
1522 | struct ev_loop |
160 | { |
1523 | { |
|
|
1524 | ev_tstamp ev_rt_now; |
|
|
1525 | #define ev_rt_now ((loop)->ev_rt_now) |
161 | # define VAR(name,decl) decl; |
1526 | #define VAR(name,decl) decl; |
162 | # include "ev_vars.h" |
1527 | #include "ev_vars.h" |
163 | }; |
|
|
164 | # undef VAR |
1528 | #undef VAR |
|
|
1529 | }; |
165 | # include "ev_wrap.h" |
1530 | #include "ev_wrap.h" |
|
|
1531 | |
|
|
1532 | static struct ev_loop default_loop_struct; |
|
|
1533 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
166 | |
1534 | |
167 | #else |
1535 | #else |
168 | |
1536 | |
|
|
1537 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
169 | # define VAR(name,decl) static decl; |
1538 | #define VAR(name,decl) static decl; |
170 | # include "ev_vars.h" |
1539 | #include "ev_vars.h" |
171 | # undef VAR |
1540 | #undef VAR |
172 | |
1541 | |
|
|
1542 | static int ev_default_loop_ptr; |
|
|
1543 | |
173 | #endif |
1544 | #endif |
|
|
1545 | |
|
|
1546 | #if EV_FEATURE_API |
|
|
1547 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1548 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1549 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1550 | #else |
|
|
1551 | # define EV_RELEASE_CB (void)0 |
|
|
1552 | # define EV_ACQUIRE_CB (void)0 |
|
|
1553 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1554 | #endif |
|
|
1555 | |
|
|
1556 | #define EVBREAK_RECURSE 0x80 |
174 | |
1557 | |
175 | /*****************************************************************************/ |
1558 | /*****************************************************************************/ |
176 | |
1559 | |
177 | inline ev_tstamp |
1560 | #ifndef EV_HAVE_EV_TIME |
|
|
1561 | ev_tstamp |
178 | ev_time (void) |
1562 | ev_time (void) EV_THROW |
179 | { |
1563 | { |
180 | #if EV_USE_REALTIME |
1564 | #if EV_USE_REALTIME |
|
|
1565 | if (expect_true (have_realtime)) |
|
|
1566 | { |
181 | struct timespec ts; |
1567 | struct timespec ts; |
182 | clock_gettime (CLOCK_REALTIME, &ts); |
1568 | clock_gettime (CLOCK_REALTIME, &ts); |
183 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1569 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
184 | #else |
1570 | } |
|
|
1571 | #endif |
|
|
1572 | |
185 | struct timeval tv; |
1573 | struct timeval tv; |
186 | gettimeofday (&tv, 0); |
1574 | gettimeofday (&tv, 0); |
187 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1575 | return tv.tv_sec + tv.tv_usec * 1e-6; |
188 | #endif |
|
|
189 | } |
1576 | } |
|
|
1577 | #endif |
190 | |
1578 | |
191 | inline ev_tstamp |
1579 | inline_size ev_tstamp |
192 | get_clock (void) |
1580 | get_clock (void) |
193 | { |
1581 | { |
194 | #if EV_USE_MONOTONIC |
1582 | #if EV_USE_MONOTONIC |
195 | if (expect_true (have_monotonic)) |
1583 | if (expect_true (have_monotonic)) |
196 | { |
1584 | { |
… | |
… | |
201 | #endif |
1589 | #endif |
202 | |
1590 | |
203 | return ev_time (); |
1591 | return ev_time (); |
204 | } |
1592 | } |
205 | |
1593 | |
|
|
1594 | #if EV_MULTIPLICITY |
206 | ev_tstamp |
1595 | ev_tstamp |
207 | ev_now (EV_P) |
1596 | ev_now (EV_P) EV_THROW |
208 | { |
1597 | { |
209 | return rt_now; |
1598 | return ev_rt_now; |
210 | } |
1599 | } |
|
|
1600 | #endif |
211 | |
1601 | |
212 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
1602 | void |
213 | |
1603 | ev_sleep (ev_tstamp delay) EV_THROW |
214 | #define array_needsize(base,cur,cnt,init) \ |
1604 | { |
215 | if (expect_false ((cnt) > cur)) \ |
1605 | if (delay > 0.) |
216 | { \ |
|
|
217 | int newcnt = cur; \ |
|
|
218 | do \ |
|
|
219 | { \ |
|
|
220 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
221 | } \ |
|
|
222 | while ((cnt) > newcnt); \ |
|
|
223 | \ |
|
|
224 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
225 | init (base + cur, newcnt - cur); \ |
|
|
226 | cur = newcnt; \ |
|
|
227 | } |
1606 | { |
|
|
1607 | #if EV_USE_NANOSLEEP |
|
|
1608 | struct timespec ts; |
|
|
1609 | |
|
|
1610 | EV_TS_SET (ts, delay); |
|
|
1611 | nanosleep (&ts, 0); |
|
|
1612 | #elif defined _WIN32 |
|
|
1613 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1614 | #else |
|
|
1615 | struct timeval tv; |
|
|
1616 | |
|
|
1617 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1618 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1619 | /* by older ones */ |
|
|
1620 | EV_TV_SET (tv, delay); |
|
|
1621 | select (0, 0, 0, 0, &tv); |
|
|
1622 | #endif |
|
|
1623 | } |
|
|
1624 | } |
228 | |
1625 | |
229 | /*****************************************************************************/ |
1626 | /*****************************************************************************/ |
230 | |
1627 | |
231 | static void |
1628 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
232 | anfds_init (ANFD *base, int count) |
|
|
233 | { |
|
|
234 | while (count--) |
|
|
235 | { |
|
|
236 | base->head = 0; |
|
|
237 | base->events = EV_NONE; |
|
|
238 | base->reify = 0; |
|
|
239 | |
1629 | |
240 | ++base; |
1630 | /* find a suitable new size for the given array, */ |
|
|
1631 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
1632 | inline_size int |
|
|
1633 | array_nextsize (int elem, int cur, int cnt) |
|
|
1634 | { |
|
|
1635 | int ncur = cur + 1; |
|
|
1636 | |
|
|
1637 | do |
|
|
1638 | ncur <<= 1; |
|
|
1639 | while (cnt > ncur); |
|
|
1640 | |
|
|
1641 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
1642 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
241 | } |
1643 | { |
242 | } |
1644 | ncur *= elem; |
243 | |
1645 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
244 | static void |
1646 | ncur = ncur - sizeof (void *) * 4; |
245 | event (EV_P_ W w, int events) |
1647 | ncur /= elem; |
246 | { |
|
|
247 | if (w->pending) |
|
|
248 | { |
1648 | } |
|
|
1649 | |
|
|
1650 | return ncur; |
|
|
1651 | } |
|
|
1652 | |
|
|
1653 | static void * noinline ecb_cold |
|
|
1654 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
1655 | { |
|
|
1656 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
1657 | return ev_realloc (base, elem * *cur); |
|
|
1658 | } |
|
|
1659 | |
|
|
1660 | #define array_init_zero(base,count) \ |
|
|
1661 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
1662 | |
|
|
1663 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
1664 | if (expect_false ((cnt) > (cur))) \ |
|
|
1665 | { \ |
|
|
1666 | int ecb_unused ocur_ = (cur); \ |
|
|
1667 | (base) = (type *)array_realloc \ |
|
|
1668 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
1669 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
1670 | } |
|
|
1671 | |
|
|
1672 | #if 0 |
|
|
1673 | #define array_slim(type,stem) \ |
|
|
1674 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
1675 | { \ |
|
|
1676 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
1677 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
1678 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
1679 | } |
|
|
1680 | #endif |
|
|
1681 | |
|
|
1682 | #define array_free(stem, idx) \ |
|
|
1683 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
1684 | |
|
|
1685 | /*****************************************************************************/ |
|
|
1686 | |
|
|
1687 | /* dummy callback for pending events */ |
|
|
1688 | static void noinline |
|
|
1689 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
1690 | { |
|
|
1691 | } |
|
|
1692 | |
|
|
1693 | void noinline |
|
|
1694 | ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
|
|
1695 | { |
|
|
1696 | W w_ = (W)w; |
|
|
1697 | int pri = ABSPRI (w_); |
|
|
1698 | |
|
|
1699 | if (expect_false (w_->pending)) |
|
|
1700 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
1701 | else |
|
|
1702 | { |
|
|
1703 | w_->pending = ++pendingcnt [pri]; |
|
|
1704 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
1705 | pendings [pri][w_->pending - 1].w = w_; |
249 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
1706 | pendings [pri][w_->pending - 1].events = revents; |
250 | return; |
|
|
251 | } |
1707 | } |
252 | |
1708 | |
253 | w->pending = ++pendingcnt [ABSPRI (w)]; |
1709 | pendingpri = NUMPRI - 1; |
254 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
255 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
256 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
257 | } |
1710 | } |
258 | |
1711 | |
259 | static void |
1712 | inline_speed void |
|
|
1713 | feed_reverse (EV_P_ W w) |
|
|
1714 | { |
|
|
1715 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
1716 | rfeeds [rfeedcnt++] = w; |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | inline_size void |
|
|
1720 | feed_reverse_done (EV_P_ int revents) |
|
|
1721 | { |
|
|
1722 | do |
|
|
1723 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
1724 | while (rfeedcnt); |
|
|
1725 | } |
|
|
1726 | |
|
|
1727 | inline_speed void |
260 | queue_events (EV_P_ W *events, int eventcnt, int type) |
1728 | queue_events (EV_P_ W *events, int eventcnt, int type) |
261 | { |
1729 | { |
262 | int i; |
1730 | int i; |
263 | |
1731 | |
264 | for (i = 0; i < eventcnt; ++i) |
1732 | for (i = 0; i < eventcnt; ++i) |
265 | event (EV_A_ events [i], type); |
1733 | ev_feed_event (EV_A_ events [i], type); |
266 | } |
1734 | } |
267 | |
1735 | |
268 | static void |
1736 | /*****************************************************************************/ |
|
|
1737 | |
|
|
1738 | inline_speed void |
269 | fd_event (EV_P_ int fd, int events) |
1739 | fd_event_nocheck (EV_P_ int fd, int revents) |
270 | { |
1740 | { |
271 | ANFD *anfd = anfds + fd; |
1741 | ANFD *anfd = anfds + fd; |
272 | struct ev_io *w; |
1742 | ev_io *w; |
273 | |
1743 | |
274 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
1744 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
275 | { |
1745 | { |
276 | int ev = w->events & events; |
1746 | int ev = w->events & revents; |
277 | |
1747 | |
278 | if (ev) |
1748 | if (ev) |
279 | event (EV_A_ (W)w, ev); |
1749 | ev_feed_event (EV_A_ (W)w, ev); |
280 | } |
1750 | } |
281 | } |
1751 | } |
282 | |
1752 | |
283 | /*****************************************************************************/ |
1753 | /* do not submit kernel events for fds that have reify set */ |
|
|
1754 | /* because that means they changed while we were polling for new events */ |
|
|
1755 | inline_speed void |
|
|
1756 | fd_event (EV_P_ int fd, int revents) |
|
|
1757 | { |
|
|
1758 | ANFD *anfd = anfds + fd; |
284 | |
1759 | |
285 | static void |
1760 | if (expect_true (!anfd->reify)) |
|
|
1761 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1762 | } |
|
|
1763 | |
|
|
1764 | void |
|
|
1765 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
|
|
1766 | { |
|
|
1767 | if (fd >= 0 && fd < anfdmax) |
|
|
1768 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1769 | } |
|
|
1770 | |
|
|
1771 | /* make sure the external fd watch events are in-sync */ |
|
|
1772 | /* with the kernel/libev internal state */ |
|
|
1773 | inline_size void |
286 | fd_reify (EV_P) |
1774 | fd_reify (EV_P) |
287 | { |
1775 | { |
288 | int i; |
1776 | int i; |
289 | |
1777 | |
|
|
1778 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
290 | for (i = 0; i < fdchangecnt; ++i) |
1779 | for (i = 0; i < fdchangecnt; ++i) |
291 | { |
1780 | { |
292 | int fd = fdchanges [i]; |
1781 | int fd = fdchanges [i]; |
293 | ANFD *anfd = anfds + fd; |
1782 | ANFD *anfd = anfds + fd; |
294 | struct ev_io *w; |
|
|
295 | |
1783 | |
296 | int events = 0; |
1784 | if (anfd->reify & EV__IOFDSET && anfd->head) |
297 | |
|
|
298 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
299 | events |= w->events; |
|
|
300 | |
|
|
301 | anfd->reify = 0; |
|
|
302 | |
|
|
303 | if (anfd->events != events) |
|
|
304 | { |
1785 | { |
|
|
1786 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1787 | |
|
|
1788 | if (handle != anfd->handle) |
|
|
1789 | { |
|
|
1790 | unsigned long arg; |
|
|
1791 | |
|
|
1792 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1793 | |
|
|
1794 | /* handle changed, but fd didn't - we need to do it in two steps */ |
305 | method_modify (EV_A_ fd, anfd->events, events); |
1795 | backend_modify (EV_A_ fd, anfd->events, 0); |
306 | anfd->events = events; |
1796 | anfd->events = 0; |
|
|
1797 | anfd->handle = handle; |
|
|
1798 | } |
307 | } |
1799 | } |
308 | } |
1800 | } |
|
|
1801 | #endif |
|
|
1802 | |
|
|
1803 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1804 | { |
|
|
1805 | int fd = fdchanges [i]; |
|
|
1806 | ANFD *anfd = anfds + fd; |
|
|
1807 | ev_io *w; |
|
|
1808 | |
|
|
1809 | unsigned char o_events = anfd->events; |
|
|
1810 | unsigned char o_reify = anfd->reify; |
|
|
1811 | |
|
|
1812 | anfd->reify = 0; |
|
|
1813 | |
|
|
1814 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
1815 | { |
|
|
1816 | anfd->events = 0; |
|
|
1817 | |
|
|
1818 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1819 | anfd->events |= (unsigned char)w->events; |
|
|
1820 | |
|
|
1821 | if (o_events != anfd->events) |
|
|
1822 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | if (o_reify & EV__IOFDSET) |
|
|
1826 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
1827 | } |
309 | |
1828 | |
310 | fdchangecnt = 0; |
1829 | fdchangecnt = 0; |
311 | } |
1830 | } |
312 | |
1831 | |
313 | static void |
1832 | /* something about the given fd changed */ |
|
|
1833 | inline_size void |
314 | fd_change (EV_P_ int fd) |
1834 | fd_change (EV_P_ int fd, int flags) |
315 | { |
1835 | { |
316 | if (anfds [fd].reify || fdchangecnt < 0) |
1836 | unsigned char reify = anfds [fd].reify; |
317 | return; |
|
|
318 | |
|
|
319 | anfds [fd].reify = 1; |
1837 | anfds [fd].reify |= flags; |
320 | |
1838 | |
|
|
1839 | if (expect_true (!reify)) |
|
|
1840 | { |
321 | ++fdchangecnt; |
1841 | ++fdchangecnt; |
322 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1842 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
323 | fdchanges [fdchangecnt - 1] = fd; |
1843 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1844 | } |
324 | } |
1845 | } |
325 | |
1846 | |
326 | static void |
1847 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1848 | inline_speed void ecb_cold |
327 | fd_kill (EV_P_ int fd) |
1849 | fd_kill (EV_P_ int fd) |
328 | { |
1850 | { |
329 | struct ev_io *w; |
1851 | ev_io *w; |
330 | |
1852 | |
331 | while ((w = (struct ev_io *)anfds [fd].head)) |
1853 | while ((w = (ev_io *)anfds [fd].head)) |
332 | { |
1854 | { |
333 | ev_io_stop (EV_A_ w); |
1855 | ev_io_stop (EV_A_ w); |
334 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1856 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
335 | } |
1857 | } |
|
|
1858 | } |
|
|
1859 | |
|
|
1860 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1861 | inline_size int ecb_cold |
|
|
1862 | fd_valid (int fd) |
|
|
1863 | { |
|
|
1864 | #ifdef _WIN32 |
|
|
1865 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
1866 | #else |
|
|
1867 | return fcntl (fd, F_GETFD) != -1; |
|
|
1868 | #endif |
336 | } |
1869 | } |
337 | |
1870 | |
338 | /* called on EBADF to verify fds */ |
1871 | /* called on EBADF to verify fds */ |
339 | static void |
1872 | static void noinline ecb_cold |
340 | fd_ebadf (EV_P) |
1873 | fd_ebadf (EV_P) |
341 | { |
1874 | { |
342 | int fd; |
1875 | int fd; |
343 | |
1876 | |
344 | for (fd = 0; fd < anfdmax; ++fd) |
1877 | for (fd = 0; fd < anfdmax; ++fd) |
345 | if (anfds [fd].events) |
1878 | if (anfds [fd].events) |
346 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
1879 | if (!fd_valid (fd) && errno == EBADF) |
347 | fd_kill (EV_A_ fd); |
1880 | fd_kill (EV_A_ fd); |
348 | } |
1881 | } |
349 | |
1882 | |
350 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1883 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
351 | static void |
1884 | static void noinline ecb_cold |
352 | fd_enomem (EV_P) |
1885 | fd_enomem (EV_P) |
353 | { |
1886 | { |
354 | int fd = anfdmax; |
1887 | int fd; |
355 | |
1888 | |
356 | while (fd--) |
1889 | for (fd = anfdmax; fd--; ) |
357 | if (anfds [fd].events) |
1890 | if (anfds [fd].events) |
358 | { |
1891 | { |
359 | close (fd); |
|
|
360 | fd_kill (EV_A_ fd); |
1892 | fd_kill (EV_A_ fd); |
361 | return; |
1893 | break; |
362 | } |
1894 | } |
363 | } |
1895 | } |
364 | |
1896 | |
365 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
1897 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
366 | static void |
1898 | static void noinline |
367 | fd_rearm_all (EV_P) |
1899 | fd_rearm_all (EV_P) |
368 | { |
1900 | { |
369 | int fd; |
1901 | int fd; |
370 | |
1902 | |
371 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
372 | for (fd = 0; fd < anfdmax; ++fd) |
1903 | for (fd = 0; fd < anfdmax; ++fd) |
373 | if (anfds [fd].events) |
1904 | if (anfds [fd].events) |
374 | { |
1905 | { |
375 | anfds [fd].events = 0; |
1906 | anfds [fd].events = 0; |
376 | fd_change (EV_A_ fd); |
1907 | anfds [fd].emask = 0; |
|
|
1908 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
377 | } |
1909 | } |
378 | } |
1910 | } |
379 | |
1911 | |
|
|
1912 | /* used to prepare libev internal fd's */ |
|
|
1913 | /* this is not fork-safe */ |
|
|
1914 | inline_speed void |
|
|
1915 | fd_intern (int fd) |
|
|
1916 | { |
|
|
1917 | #ifdef _WIN32 |
|
|
1918 | unsigned long arg = 1; |
|
|
1919 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1920 | #else |
|
|
1921 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1922 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1923 | #endif |
|
|
1924 | } |
|
|
1925 | |
380 | /*****************************************************************************/ |
1926 | /*****************************************************************************/ |
381 | |
1927 | |
|
|
1928 | /* |
|
|
1929 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1930 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1931 | * the branching factor of the d-tree. |
|
|
1932 | */ |
|
|
1933 | |
|
|
1934 | /* |
|
|
1935 | * at the moment we allow libev the luxury of two heaps, |
|
|
1936 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1937 | * which is more cache-efficient. |
|
|
1938 | * the difference is about 5% with 50000+ watchers. |
|
|
1939 | */ |
|
|
1940 | #if EV_USE_4HEAP |
|
|
1941 | |
|
|
1942 | #define DHEAP 4 |
|
|
1943 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1944 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1945 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1946 | |
|
|
1947 | /* away from the root */ |
|
|
1948 | inline_speed void |
|
|
1949 | downheap (ANHE *heap, int N, int k) |
|
|
1950 | { |
|
|
1951 | ANHE he = heap [k]; |
|
|
1952 | ANHE *E = heap + N + HEAP0; |
|
|
1953 | |
|
|
1954 | for (;;) |
|
|
1955 | { |
|
|
1956 | ev_tstamp minat; |
|
|
1957 | ANHE *minpos; |
|
|
1958 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1959 | |
|
|
1960 | /* find minimum child */ |
|
|
1961 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1962 | { |
|
|
1963 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1964 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1965 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1966 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1967 | } |
|
|
1968 | else if (pos < E) |
|
|
1969 | { |
|
|
1970 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1971 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1972 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1973 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1974 | } |
|
|
1975 | else |
|
|
1976 | break; |
|
|
1977 | |
|
|
1978 | if (ANHE_at (he) <= minat) |
|
|
1979 | break; |
|
|
1980 | |
|
|
1981 | heap [k] = *minpos; |
|
|
1982 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1983 | |
|
|
1984 | k = minpos - heap; |
|
|
1985 | } |
|
|
1986 | |
|
|
1987 | heap [k] = he; |
|
|
1988 | ev_active (ANHE_w (he)) = k; |
|
|
1989 | } |
|
|
1990 | |
|
|
1991 | #else /* 4HEAP */ |
|
|
1992 | |
|
|
1993 | #define HEAP0 1 |
|
|
1994 | #define HPARENT(k) ((k) >> 1) |
|
|
1995 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1996 | |
|
|
1997 | /* away from the root */ |
|
|
1998 | inline_speed void |
|
|
1999 | downheap (ANHE *heap, int N, int k) |
|
|
2000 | { |
|
|
2001 | ANHE he = heap [k]; |
|
|
2002 | |
|
|
2003 | for (;;) |
|
|
2004 | { |
|
|
2005 | int c = k << 1; |
|
|
2006 | |
|
|
2007 | if (c >= N + HEAP0) |
|
|
2008 | break; |
|
|
2009 | |
|
|
2010 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2011 | ? 1 : 0; |
|
|
2012 | |
|
|
2013 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2014 | break; |
|
|
2015 | |
|
|
2016 | heap [k] = heap [c]; |
|
|
2017 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2018 | |
|
|
2019 | k = c; |
|
|
2020 | } |
|
|
2021 | |
|
|
2022 | heap [k] = he; |
|
|
2023 | ev_active (ANHE_w (he)) = k; |
|
|
2024 | } |
|
|
2025 | #endif |
|
|
2026 | |
|
|
2027 | /* towards the root */ |
|
|
2028 | inline_speed void |
|
|
2029 | upheap (ANHE *heap, int k) |
|
|
2030 | { |
|
|
2031 | ANHE he = heap [k]; |
|
|
2032 | |
|
|
2033 | for (;;) |
|
|
2034 | { |
|
|
2035 | int p = HPARENT (k); |
|
|
2036 | |
|
|
2037 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2038 | break; |
|
|
2039 | |
|
|
2040 | heap [k] = heap [p]; |
|
|
2041 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2042 | k = p; |
|
|
2043 | } |
|
|
2044 | |
|
|
2045 | heap [k] = he; |
|
|
2046 | ev_active (ANHE_w (he)) = k; |
|
|
2047 | } |
|
|
2048 | |
|
|
2049 | /* move an element suitably so it is in a correct place */ |
|
|
2050 | inline_size void |
|
|
2051 | adjustheap (ANHE *heap, int N, int k) |
|
|
2052 | { |
|
|
2053 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2054 | upheap (heap, k); |
|
|
2055 | else |
|
|
2056 | downheap (heap, N, k); |
|
|
2057 | } |
|
|
2058 | |
|
|
2059 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2060 | inline_size void |
|
|
2061 | reheap (ANHE *heap, int N) |
|
|
2062 | { |
|
|
2063 | int i; |
|
|
2064 | |
|
|
2065 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2066 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2067 | for (i = 0; i < N; ++i) |
|
|
2068 | upheap (heap, i + HEAP0); |
|
|
2069 | } |
|
|
2070 | |
|
|
2071 | /*****************************************************************************/ |
|
|
2072 | |
|
|
2073 | /* associate signal watchers to a signal signal */ |
|
|
2074 | typedef struct |
|
|
2075 | { |
|
|
2076 | EV_ATOMIC_T pending; |
|
|
2077 | #if EV_MULTIPLICITY |
|
|
2078 | EV_P; |
|
|
2079 | #endif |
|
|
2080 | WL head; |
|
|
2081 | } ANSIG; |
|
|
2082 | |
|
|
2083 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2084 | |
|
|
2085 | /*****************************************************************************/ |
|
|
2086 | |
|
|
2087 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2088 | |
|
|
2089 | static void noinline ecb_cold |
|
|
2090 | evpipe_init (EV_P) |
|
|
2091 | { |
|
|
2092 | if (!ev_is_active (&pipe_w)) |
|
|
2093 | { |
|
|
2094 | int fds [2]; |
|
|
2095 | |
|
|
2096 | # if EV_USE_EVENTFD |
|
|
2097 | fds [0] = -1; |
|
|
2098 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2099 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2100 | fds [1] = eventfd (0, 0); |
|
|
2101 | |
|
|
2102 | if (fds [1] < 0) |
|
|
2103 | # endif |
|
|
2104 | { |
|
|
2105 | while (pipe (fds)) |
|
|
2106 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2107 | |
|
|
2108 | fd_intern (fds [0]); |
|
|
2109 | } |
|
|
2110 | |
|
|
2111 | evpipe [0] = fds [0]; |
|
|
2112 | |
|
|
2113 | if (evpipe [1] < 0) |
|
|
2114 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2115 | else |
|
|
2116 | { |
|
|
2117 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2118 | /* so that evpipe_write can always rely on its value. */ |
|
|
2119 | /* this branch does not do anything sensible on windows, */ |
|
|
2120 | /* so must not be executed on windows */ |
|
|
2121 | |
|
|
2122 | dup2 (fds [1], evpipe [1]); |
|
|
2123 | close (fds [1]); |
|
|
2124 | } |
|
|
2125 | |
|
|
2126 | fd_intern (evpipe [1]); |
|
|
2127 | |
|
|
2128 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2129 | ev_io_start (EV_A_ &pipe_w); |
|
|
2130 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2131 | } |
|
|
2132 | } |
|
|
2133 | |
|
|
2134 | inline_speed void |
|
|
2135 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2136 | { |
|
|
2137 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2138 | |
|
|
2139 | if (expect_true (*flag)) |
|
|
2140 | return; |
|
|
2141 | |
|
|
2142 | *flag = 1; |
|
|
2143 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2144 | |
|
|
2145 | pipe_write_skipped = 1; |
|
|
2146 | |
|
|
2147 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2148 | |
|
|
2149 | if (pipe_write_wanted) |
|
|
2150 | { |
|
|
2151 | int old_errno; |
|
|
2152 | |
|
|
2153 | pipe_write_skipped = 0; |
|
|
2154 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2155 | |
|
|
2156 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2157 | |
|
|
2158 | #if EV_USE_EVENTFD |
|
|
2159 | if (evpipe [0] < 0) |
|
|
2160 | { |
|
|
2161 | uint64_t counter = 1; |
|
|
2162 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2163 | } |
|
|
2164 | else |
|
|
2165 | #endif |
|
|
2166 | { |
|
|
2167 | #ifdef _WIN32 |
|
|
2168 | WSABUF buf; |
|
|
2169 | DWORD sent; |
|
|
2170 | buf.buf = &buf; |
|
|
2171 | buf.len = 1; |
|
|
2172 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2173 | #else |
|
|
2174 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2175 | #endif |
|
|
2176 | } |
|
|
2177 | |
|
|
2178 | errno = old_errno; |
|
|
2179 | } |
|
|
2180 | } |
|
|
2181 | |
|
|
2182 | /* called whenever the libev signal pipe */ |
|
|
2183 | /* got some events (signal, async) */ |
382 | static void |
2184 | static void |
383 | upheap (WT *heap, int k) |
2185 | pipecb (EV_P_ ev_io *iow, int revents) |
384 | { |
2186 | { |
385 | WT w = heap [k]; |
2187 | int i; |
386 | |
2188 | |
387 | while (k && heap [k >> 1]->at > w->at) |
2189 | if (revents & EV_READ) |
388 | { |
|
|
389 | heap [k] = heap [k >> 1]; |
|
|
390 | heap [k]->active = k + 1; |
|
|
391 | k >>= 1; |
|
|
392 | } |
2190 | { |
|
|
2191 | #if EV_USE_EVENTFD |
|
|
2192 | if (evpipe [0] < 0) |
|
|
2193 | { |
|
|
2194 | uint64_t counter; |
|
|
2195 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2196 | } |
|
|
2197 | else |
|
|
2198 | #endif |
|
|
2199 | { |
|
|
2200 | char dummy[4]; |
|
|
2201 | #ifdef _WIN32 |
|
|
2202 | WSABUF buf; |
|
|
2203 | DWORD recvd; |
|
|
2204 | DWORD flags = 0; |
|
|
2205 | buf.buf = dummy; |
|
|
2206 | buf.len = sizeof (dummy); |
|
|
2207 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2208 | #else |
|
|
2209 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2210 | #endif |
|
|
2211 | } |
|
|
2212 | } |
393 | |
2213 | |
394 | heap [k] = w; |
2214 | pipe_write_skipped = 0; |
395 | heap [k]->active = k + 1; |
|
|
396 | |
2215 | |
|
|
2216 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2217 | |
|
|
2218 | #if EV_SIGNAL_ENABLE |
|
|
2219 | if (sig_pending) |
|
|
2220 | { |
|
|
2221 | sig_pending = 0; |
|
|
2222 | |
|
|
2223 | ECB_MEMORY_FENCE; |
|
|
2224 | |
|
|
2225 | for (i = EV_NSIG - 1; i--; ) |
|
|
2226 | if (expect_false (signals [i].pending)) |
|
|
2227 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2228 | } |
|
|
2229 | #endif |
|
|
2230 | |
|
|
2231 | #if EV_ASYNC_ENABLE |
|
|
2232 | if (async_pending) |
|
|
2233 | { |
|
|
2234 | async_pending = 0; |
|
|
2235 | |
|
|
2236 | ECB_MEMORY_FENCE; |
|
|
2237 | |
|
|
2238 | for (i = asynccnt; i--; ) |
|
|
2239 | if (asyncs [i]->sent) |
|
|
2240 | { |
|
|
2241 | asyncs [i]->sent = 0; |
|
|
2242 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2243 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
2244 | } |
|
|
2245 | } |
|
|
2246 | #endif |
|
|
2247 | } |
|
|
2248 | |
|
|
2249 | /*****************************************************************************/ |
|
|
2250 | |
|
|
2251 | void |
|
|
2252 | ev_feed_signal (int signum) EV_THROW |
|
|
2253 | { |
|
|
2254 | #if EV_MULTIPLICITY |
|
|
2255 | EV_P; |
|
|
2256 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2257 | EV_A = signals [signum - 1].loop; |
|
|
2258 | |
|
|
2259 | if (!EV_A) |
|
|
2260 | return; |
|
|
2261 | #endif |
|
|
2262 | |
|
|
2263 | signals [signum - 1].pending = 1; |
|
|
2264 | evpipe_write (EV_A_ &sig_pending); |
397 | } |
2265 | } |
398 | |
2266 | |
399 | static void |
2267 | static void |
400 | downheap (WT *heap, int N, int k) |
2268 | ev_sighandler (int signum) |
401 | { |
2269 | { |
402 | WT w = heap [k]; |
2270 | #ifdef _WIN32 |
|
|
2271 | signal (signum, ev_sighandler); |
|
|
2272 | #endif |
403 | |
2273 | |
404 | while (k < (N >> 1)) |
2274 | ev_feed_signal (signum); |
405 | { |
2275 | } |
406 | int j = k << 1; |
|
|
407 | |
2276 | |
408 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
2277 | void noinline |
409 | ++j; |
2278 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
|
|
2279 | { |
|
|
2280 | WL w; |
410 | |
2281 | |
411 | if (w->at <= heap [j]->at) |
2282 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2283 | return; |
|
|
2284 | |
|
|
2285 | --signum; |
|
|
2286 | |
|
|
2287 | #if EV_MULTIPLICITY |
|
|
2288 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2289 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2290 | |
|
|
2291 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
2292 | return; |
|
|
2293 | #endif |
|
|
2294 | |
|
|
2295 | signals [signum].pending = 0; |
|
|
2296 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2297 | |
|
|
2298 | for (w = signals [signum].head; w; w = w->next) |
|
|
2299 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2300 | } |
|
|
2301 | |
|
|
2302 | #if EV_USE_SIGNALFD |
|
|
2303 | static void |
|
|
2304 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2305 | { |
|
|
2306 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
2307 | |
|
|
2308 | for (;;) |
|
|
2309 | { |
|
|
2310 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
2311 | |
|
|
2312 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
2313 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2314 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
2315 | |
|
|
2316 | if (res < (ssize_t)sizeof (si)) |
412 | break; |
2317 | break; |
413 | |
|
|
414 | heap [k] = heap [j]; |
|
|
415 | heap [k]->active = k + 1; |
|
|
416 | k = j; |
|
|
417 | } |
2318 | } |
418 | |
|
|
419 | heap [k] = w; |
|
|
420 | heap [k]->active = k + 1; |
|
|
421 | } |
2319 | } |
|
|
2320 | #endif |
|
|
2321 | |
|
|
2322 | #endif |
422 | |
2323 | |
423 | /*****************************************************************************/ |
2324 | /*****************************************************************************/ |
424 | |
2325 | |
425 | typedef struct |
2326 | #if EV_CHILD_ENABLE |
426 | { |
2327 | static WL childs [EV_PID_HASHSIZE]; |
427 | struct ev_watcher_list *head; |
|
|
428 | sig_atomic_t volatile gotsig; |
|
|
429 | } ANSIG; |
|
|
430 | |
2328 | |
431 | static ANSIG *signals; |
|
|
432 | static int signalmax; |
|
|
433 | |
|
|
434 | static int sigpipe [2]; |
|
|
435 | static sig_atomic_t volatile gotsig; |
|
|
436 | static struct ev_io sigev; |
|
|
437 | |
|
|
438 | static void |
|
|
439 | signals_init (ANSIG *base, int count) |
|
|
440 | { |
|
|
441 | while (count--) |
|
|
442 | { |
|
|
443 | base->head = 0; |
|
|
444 | base->gotsig = 0; |
|
|
445 | |
|
|
446 | ++base; |
|
|
447 | } |
|
|
448 | } |
|
|
449 | |
|
|
450 | static void |
|
|
451 | sighandler (int signum) |
|
|
452 | { |
|
|
453 | signals [signum - 1].gotsig = 1; |
|
|
454 | |
|
|
455 | if (!gotsig) |
|
|
456 | { |
|
|
457 | int old_errno = errno; |
|
|
458 | gotsig = 1; |
|
|
459 | write (sigpipe [1], &signum, 1); |
|
|
460 | errno = old_errno; |
|
|
461 | } |
|
|
462 | } |
|
|
463 | |
|
|
464 | static void |
|
|
465 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
466 | { |
|
|
467 | struct ev_watcher_list *w; |
|
|
468 | int signum; |
|
|
469 | |
|
|
470 | read (sigpipe [0], &revents, 1); |
|
|
471 | gotsig = 0; |
|
|
472 | |
|
|
473 | for (signum = signalmax; signum--; ) |
|
|
474 | if (signals [signum].gotsig) |
|
|
475 | { |
|
|
476 | signals [signum].gotsig = 0; |
|
|
477 | |
|
|
478 | for (w = signals [signum].head; w; w = w->next) |
|
|
479 | event (EV_A_ (W)w, EV_SIGNAL); |
|
|
480 | } |
|
|
481 | } |
|
|
482 | |
|
|
483 | static void |
|
|
484 | siginit (EV_P) |
|
|
485 | { |
|
|
486 | #ifndef WIN32 |
|
|
487 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
488 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
489 | |
|
|
490 | /* rather than sort out wether we really need nb, set it */ |
|
|
491 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
492 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
493 | #endif |
|
|
494 | |
|
|
495 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
496 | ev_io_start (EV_A_ &sigev); |
|
|
497 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
498 | } |
|
|
499 | |
|
|
500 | /*****************************************************************************/ |
|
|
501 | |
|
|
502 | #ifndef WIN32 |
|
|
503 | |
|
|
504 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
505 | static struct ev_signal childev; |
2329 | static ev_signal childev; |
|
|
2330 | |
|
|
2331 | #ifndef WIFCONTINUED |
|
|
2332 | # define WIFCONTINUED(status) 0 |
|
|
2333 | #endif |
|
|
2334 | |
|
|
2335 | /* handle a single child status event */ |
|
|
2336 | inline_speed void |
|
|
2337 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2338 | { |
|
|
2339 | ev_child *w; |
|
|
2340 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2341 | |
|
|
2342 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2343 | { |
|
|
2344 | if ((w->pid == pid || !w->pid) |
|
|
2345 | && (!traced || (w->flags & 1))) |
|
|
2346 | { |
|
|
2347 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2348 | w->rpid = pid; |
|
|
2349 | w->rstatus = status; |
|
|
2350 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2351 | } |
|
|
2352 | } |
|
|
2353 | } |
506 | |
2354 | |
507 | #ifndef WCONTINUED |
2355 | #ifndef WCONTINUED |
508 | # define WCONTINUED 0 |
2356 | # define WCONTINUED 0 |
509 | #endif |
2357 | #endif |
510 | |
2358 | |
|
|
2359 | /* called on sigchld etc., calls waitpid */ |
511 | static void |
2360 | static void |
512 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
513 | { |
|
|
514 | struct ev_child *w; |
|
|
515 | |
|
|
516 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
517 | if (w->pid == pid || !w->pid) |
|
|
518 | { |
|
|
519 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
520 | w->rpid = pid; |
|
|
521 | w->rstatus = status; |
|
|
522 | event (EV_A_ (W)w, EV_CHILD); |
|
|
523 | } |
|
|
524 | } |
|
|
525 | |
|
|
526 | static void |
|
|
527 | childcb (EV_P_ struct ev_signal *sw, int revents) |
2361 | childcb (EV_P_ ev_signal *sw, int revents) |
528 | { |
2362 | { |
529 | int pid, status; |
2363 | int pid, status; |
530 | |
2364 | |
|
|
2365 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
531 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
2366 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
532 | { |
2367 | if (!WCONTINUED |
|
|
2368 | || errno != EINVAL |
|
|
2369 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
2370 | return; |
|
|
2371 | |
533 | /* make sure we are called again until all childs have been reaped */ |
2372 | /* make sure we are called again until all children have been reaped */ |
|
|
2373 | /* we need to do it this way so that the callback gets called before we continue */ |
534 | event (EV_A_ (W)sw, EV_SIGNAL); |
2374 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
535 | |
2375 | |
536 | child_reap (EV_A_ sw, pid, pid, status); |
2376 | child_reap (EV_A_ pid, pid, status); |
|
|
2377 | if ((EV_PID_HASHSIZE) > 1) |
537 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
2378 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
538 | } |
|
|
539 | } |
2379 | } |
540 | |
2380 | |
541 | #endif |
2381 | #endif |
542 | |
2382 | |
543 | /*****************************************************************************/ |
2383 | /*****************************************************************************/ |
544 | |
2384 | |
|
|
2385 | #if EV_USE_IOCP |
|
|
2386 | # include "ev_iocp.c" |
|
|
2387 | #endif |
|
|
2388 | #if EV_USE_PORT |
|
|
2389 | # include "ev_port.c" |
|
|
2390 | #endif |
545 | #if EV_USE_KQUEUE |
2391 | #if EV_USE_KQUEUE |
546 | # include "ev_kqueue.c" |
2392 | # include "ev_kqueue.c" |
547 | #endif |
2393 | #endif |
548 | #if EV_USE_EPOLL |
2394 | #if EV_USE_EPOLL |
549 | # include "ev_epoll.c" |
2395 | # include "ev_epoll.c" |
… | |
… | |
553 | #endif |
2399 | #endif |
554 | #if EV_USE_SELECT |
2400 | #if EV_USE_SELECT |
555 | # include "ev_select.c" |
2401 | # include "ev_select.c" |
556 | #endif |
2402 | #endif |
557 | |
2403 | |
558 | int |
2404 | int ecb_cold |
559 | ev_version_major (void) |
2405 | ev_version_major (void) EV_THROW |
560 | { |
2406 | { |
561 | return EV_VERSION_MAJOR; |
2407 | return EV_VERSION_MAJOR; |
562 | } |
2408 | } |
563 | |
2409 | |
564 | int |
2410 | int ecb_cold |
565 | ev_version_minor (void) |
2411 | ev_version_minor (void) EV_THROW |
566 | { |
2412 | { |
567 | return EV_VERSION_MINOR; |
2413 | return EV_VERSION_MINOR; |
568 | } |
2414 | } |
569 | |
2415 | |
570 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2416 | /* return true if we are running with elevated privileges and should ignore env variables */ |
571 | static int |
2417 | int inline_size ecb_cold |
572 | enable_secure (void) |
2418 | enable_secure (void) |
573 | { |
2419 | { |
574 | #ifdef WIN32 |
2420 | #ifdef _WIN32 |
575 | return 0; |
2421 | return 0; |
576 | #else |
2422 | #else |
577 | return getuid () != geteuid () |
2423 | return getuid () != geteuid () |
578 | || getgid () != getegid (); |
2424 | || getgid () != getegid (); |
579 | #endif |
2425 | #endif |
580 | } |
2426 | } |
581 | |
2427 | |
|
|
2428 | unsigned int ecb_cold |
|
|
2429 | ev_supported_backends (void) EV_THROW |
|
|
2430 | { |
|
|
2431 | unsigned int flags = 0; |
|
|
2432 | |
|
|
2433 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
2434 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
2435 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2436 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
2437 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
2438 | |
|
|
2439 | return flags; |
|
|
2440 | } |
|
|
2441 | |
|
|
2442 | unsigned int ecb_cold |
|
|
2443 | ev_recommended_backends (void) EV_THROW |
|
|
2444 | { |
|
|
2445 | unsigned int flags = ev_supported_backends (); |
|
|
2446 | |
|
|
2447 | #ifndef __NetBSD__ |
|
|
2448 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
2449 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
2450 | flags &= ~EVBACKEND_KQUEUE; |
|
|
2451 | #endif |
|
|
2452 | #ifdef __APPLE__ |
|
|
2453 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2454 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2455 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2456 | #endif |
|
|
2457 | #ifdef __FreeBSD__ |
|
|
2458 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2459 | #endif |
|
|
2460 | |
|
|
2461 | return flags; |
|
|
2462 | } |
|
|
2463 | |
|
|
2464 | unsigned int ecb_cold |
|
|
2465 | ev_embeddable_backends (void) EV_THROW |
|
|
2466 | { |
|
|
2467 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2468 | |
|
|
2469 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2470 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2471 | flags &= ~EVBACKEND_EPOLL; |
|
|
2472 | |
|
|
2473 | return flags; |
|
|
2474 | } |
|
|
2475 | |
|
|
2476 | unsigned int |
|
|
2477 | ev_backend (EV_P) EV_THROW |
|
|
2478 | { |
|
|
2479 | return backend; |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | #if EV_FEATURE_API |
|
|
2483 | unsigned int |
|
|
2484 | ev_iteration (EV_P) EV_THROW |
|
|
2485 | { |
|
|
2486 | return loop_count; |
|
|
2487 | } |
|
|
2488 | |
|
|
2489 | unsigned int |
|
|
2490 | ev_depth (EV_P) EV_THROW |
|
|
2491 | { |
|
|
2492 | return loop_depth; |
|
|
2493 | } |
|
|
2494 | |
|
|
2495 | void |
|
|
2496 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2497 | { |
|
|
2498 | io_blocktime = interval; |
|
|
2499 | } |
|
|
2500 | |
|
|
2501 | void |
|
|
2502 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2503 | { |
|
|
2504 | timeout_blocktime = interval; |
|
|
2505 | } |
|
|
2506 | |
|
|
2507 | void |
|
|
2508 | ev_set_userdata (EV_P_ void *data) EV_THROW |
|
|
2509 | { |
|
|
2510 | userdata = data; |
|
|
2511 | } |
|
|
2512 | |
|
|
2513 | void * |
|
|
2514 | ev_userdata (EV_P) EV_THROW |
|
|
2515 | { |
|
|
2516 | return userdata; |
|
|
2517 | } |
|
|
2518 | |
|
|
2519 | void |
|
|
2520 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
|
|
2521 | { |
|
|
2522 | invoke_cb = invoke_pending_cb; |
|
|
2523 | } |
|
|
2524 | |
|
|
2525 | void |
|
|
2526 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
|
|
2527 | { |
|
|
2528 | release_cb = release; |
|
|
2529 | acquire_cb = acquire; |
|
|
2530 | } |
|
|
2531 | #endif |
|
|
2532 | |
|
|
2533 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2534 | static void noinline ecb_cold |
|
|
2535 | loop_init (EV_P_ unsigned int flags) EV_THROW |
|
|
2536 | { |
|
|
2537 | if (!backend) |
|
|
2538 | { |
|
|
2539 | origflags = flags; |
|
|
2540 | |
|
|
2541 | #if EV_USE_REALTIME |
|
|
2542 | if (!have_realtime) |
|
|
2543 | { |
|
|
2544 | struct timespec ts; |
|
|
2545 | |
|
|
2546 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2547 | have_realtime = 1; |
|
|
2548 | } |
|
|
2549 | #endif |
|
|
2550 | |
|
|
2551 | #if EV_USE_MONOTONIC |
|
|
2552 | if (!have_monotonic) |
|
|
2553 | { |
|
|
2554 | struct timespec ts; |
|
|
2555 | |
|
|
2556 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
2557 | have_monotonic = 1; |
|
|
2558 | } |
|
|
2559 | #endif |
|
|
2560 | |
|
|
2561 | /* pid check not overridable via env */ |
|
|
2562 | #ifndef _WIN32 |
|
|
2563 | if (flags & EVFLAG_FORKCHECK) |
|
|
2564 | curpid = getpid (); |
|
|
2565 | #endif |
|
|
2566 | |
|
|
2567 | if (!(flags & EVFLAG_NOENV) |
|
|
2568 | && !enable_secure () |
|
|
2569 | && getenv ("LIBEV_FLAGS")) |
|
|
2570 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
2571 | |
|
|
2572 | ev_rt_now = ev_time (); |
|
|
2573 | mn_now = get_clock (); |
|
|
2574 | now_floor = mn_now; |
|
|
2575 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2576 | #if EV_FEATURE_API |
|
|
2577 | invoke_cb = ev_invoke_pending; |
|
|
2578 | #endif |
|
|
2579 | |
|
|
2580 | io_blocktime = 0.; |
|
|
2581 | timeout_blocktime = 0.; |
|
|
2582 | backend = 0; |
|
|
2583 | backend_fd = -1; |
|
|
2584 | sig_pending = 0; |
|
|
2585 | #if EV_ASYNC_ENABLE |
|
|
2586 | async_pending = 0; |
|
|
2587 | #endif |
|
|
2588 | pipe_write_skipped = 0; |
|
|
2589 | pipe_write_wanted = 0; |
|
|
2590 | evpipe [0] = -1; |
|
|
2591 | evpipe [1] = -1; |
|
|
2592 | #if EV_USE_INOTIFY |
|
|
2593 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2594 | #endif |
|
|
2595 | #if EV_USE_SIGNALFD |
|
|
2596 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2597 | #endif |
|
|
2598 | |
|
|
2599 | if (!(flags & EVBACKEND_MASK)) |
|
|
2600 | flags |= ev_recommended_backends (); |
|
|
2601 | |
|
|
2602 | #if EV_USE_IOCP |
|
|
2603 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2604 | #endif |
|
|
2605 | #if EV_USE_PORT |
|
|
2606 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
2607 | #endif |
|
|
2608 | #if EV_USE_KQUEUE |
|
|
2609 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
2610 | #endif |
|
|
2611 | #if EV_USE_EPOLL |
|
|
2612 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
2613 | #endif |
|
|
2614 | #if EV_USE_POLL |
|
|
2615 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
2616 | #endif |
|
|
2617 | #if EV_USE_SELECT |
|
|
2618 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
2619 | #endif |
|
|
2620 | |
|
|
2621 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2622 | |
|
|
2623 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2624 | ev_init (&pipe_w, pipecb); |
|
|
2625 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2626 | #endif |
|
|
2627 | } |
|
|
2628 | } |
|
|
2629 | |
|
|
2630 | /* free up a loop structure */ |
|
|
2631 | void ecb_cold |
|
|
2632 | ev_loop_destroy (EV_P) |
|
|
2633 | { |
|
|
2634 | int i; |
|
|
2635 | |
|
|
2636 | #if EV_MULTIPLICITY |
|
|
2637 | /* mimic free (0) */ |
|
|
2638 | if (!EV_A) |
|
|
2639 | return; |
|
|
2640 | #endif |
|
|
2641 | |
|
|
2642 | #if EV_CLEANUP_ENABLE |
|
|
2643 | /* queue cleanup watchers (and execute them) */ |
|
|
2644 | if (expect_false (cleanupcnt)) |
|
|
2645 | { |
|
|
2646 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2647 | EV_INVOKE_PENDING; |
|
|
2648 | } |
|
|
2649 | #endif |
|
|
2650 | |
|
|
2651 | #if EV_CHILD_ENABLE |
|
|
2652 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
2653 | { |
|
|
2654 | ev_ref (EV_A); /* child watcher */ |
|
|
2655 | ev_signal_stop (EV_A_ &childev); |
|
|
2656 | } |
|
|
2657 | #endif |
|
|
2658 | |
|
|
2659 | if (ev_is_active (&pipe_w)) |
|
|
2660 | { |
|
|
2661 | /*ev_ref (EV_A);*/ |
|
|
2662 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2663 | |
|
|
2664 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2665 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2666 | } |
|
|
2667 | |
|
|
2668 | #if EV_USE_SIGNALFD |
|
|
2669 | if (ev_is_active (&sigfd_w)) |
|
|
2670 | close (sigfd); |
|
|
2671 | #endif |
|
|
2672 | |
|
|
2673 | #if EV_USE_INOTIFY |
|
|
2674 | if (fs_fd >= 0) |
|
|
2675 | close (fs_fd); |
|
|
2676 | #endif |
|
|
2677 | |
|
|
2678 | if (backend_fd >= 0) |
|
|
2679 | close (backend_fd); |
|
|
2680 | |
|
|
2681 | #if EV_USE_IOCP |
|
|
2682 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2683 | #endif |
|
|
2684 | #if EV_USE_PORT |
|
|
2685 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
2686 | #endif |
|
|
2687 | #if EV_USE_KQUEUE |
|
|
2688 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
2689 | #endif |
|
|
2690 | #if EV_USE_EPOLL |
|
|
2691 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
2692 | #endif |
|
|
2693 | #if EV_USE_POLL |
|
|
2694 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
2695 | #endif |
|
|
2696 | #if EV_USE_SELECT |
|
|
2697 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
2698 | #endif |
|
|
2699 | |
|
|
2700 | for (i = NUMPRI; i--; ) |
|
|
2701 | { |
|
|
2702 | array_free (pending, [i]); |
|
|
2703 | #if EV_IDLE_ENABLE |
|
|
2704 | array_free (idle, [i]); |
|
|
2705 | #endif |
|
|
2706 | } |
|
|
2707 | |
|
|
2708 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
2709 | |
|
|
2710 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
2711 | array_free (rfeed, EMPTY); |
|
|
2712 | array_free (fdchange, EMPTY); |
|
|
2713 | array_free (timer, EMPTY); |
|
|
2714 | #if EV_PERIODIC_ENABLE |
|
|
2715 | array_free (periodic, EMPTY); |
|
|
2716 | #endif |
|
|
2717 | #if EV_FORK_ENABLE |
|
|
2718 | array_free (fork, EMPTY); |
|
|
2719 | #endif |
|
|
2720 | #if EV_CLEANUP_ENABLE |
|
|
2721 | array_free (cleanup, EMPTY); |
|
|
2722 | #endif |
|
|
2723 | array_free (prepare, EMPTY); |
|
|
2724 | array_free (check, EMPTY); |
|
|
2725 | #if EV_ASYNC_ENABLE |
|
|
2726 | array_free (async, EMPTY); |
|
|
2727 | #endif |
|
|
2728 | |
|
|
2729 | backend = 0; |
|
|
2730 | |
|
|
2731 | #if EV_MULTIPLICITY |
|
|
2732 | if (ev_is_default_loop (EV_A)) |
|
|
2733 | #endif |
|
|
2734 | ev_default_loop_ptr = 0; |
|
|
2735 | #if EV_MULTIPLICITY |
|
|
2736 | else |
|
|
2737 | ev_free (EV_A); |
|
|
2738 | #endif |
|
|
2739 | } |
|
|
2740 | |
|
|
2741 | #if EV_USE_INOTIFY |
|
|
2742 | inline_size void infy_fork (EV_P); |
|
|
2743 | #endif |
|
|
2744 | |
|
|
2745 | inline_size void |
|
|
2746 | loop_fork (EV_P) |
|
|
2747 | { |
|
|
2748 | #if EV_USE_PORT |
|
|
2749 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
2750 | #endif |
|
|
2751 | #if EV_USE_KQUEUE |
|
|
2752 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
2753 | #endif |
|
|
2754 | #if EV_USE_EPOLL |
|
|
2755 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
2756 | #endif |
|
|
2757 | #if EV_USE_INOTIFY |
|
|
2758 | infy_fork (EV_A); |
|
|
2759 | #endif |
|
|
2760 | |
|
|
2761 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2762 | if (ev_is_active (&pipe_w)) |
|
|
2763 | { |
|
|
2764 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
2765 | |
|
|
2766 | ev_ref (EV_A); |
|
|
2767 | ev_io_stop (EV_A_ &pipe_w); |
|
|
2768 | |
|
|
2769 | if (evpipe [0] >= 0) |
|
|
2770 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2771 | |
|
|
2772 | evpipe_init (EV_A); |
|
|
2773 | /* iterate over everything, in case we missed something before */ |
|
|
2774 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2775 | } |
|
|
2776 | #endif |
|
|
2777 | |
|
|
2778 | postfork = 0; |
|
|
2779 | } |
|
|
2780 | |
|
|
2781 | #if EV_MULTIPLICITY |
|
|
2782 | |
|
|
2783 | struct ev_loop * ecb_cold |
|
|
2784 | ev_loop_new (unsigned int flags) EV_THROW |
|
|
2785 | { |
|
|
2786 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
2787 | |
|
|
2788 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
2789 | loop_init (EV_A_ flags); |
|
|
2790 | |
|
|
2791 | if (ev_backend (EV_A)) |
|
|
2792 | return EV_A; |
|
|
2793 | |
|
|
2794 | ev_free (EV_A); |
|
|
2795 | return 0; |
|
|
2796 | } |
|
|
2797 | |
|
|
2798 | #endif /* multiplicity */ |
|
|
2799 | |
|
|
2800 | #if EV_VERIFY |
|
|
2801 | static void noinline ecb_cold |
|
|
2802 | verify_watcher (EV_P_ W w) |
|
|
2803 | { |
|
|
2804 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
2805 | |
|
|
2806 | if (w->pending) |
|
|
2807 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2808 | } |
|
|
2809 | |
|
|
2810 | static void noinline ecb_cold |
|
|
2811 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2812 | { |
|
|
2813 | int i; |
|
|
2814 | |
|
|
2815 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2816 | { |
|
|
2817 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2818 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2819 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2820 | |
|
|
2821 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2822 | } |
|
|
2823 | } |
|
|
2824 | |
|
|
2825 | static void noinline ecb_cold |
|
|
2826 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2827 | { |
|
|
2828 | while (cnt--) |
|
|
2829 | { |
|
|
2830 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2831 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2832 | } |
|
|
2833 | } |
|
|
2834 | #endif |
|
|
2835 | |
|
|
2836 | #if EV_FEATURE_API |
|
|
2837 | void ecb_cold |
|
|
2838 | ev_verify (EV_P) EV_THROW |
|
|
2839 | { |
|
|
2840 | #if EV_VERIFY |
|
|
2841 | int i; |
|
|
2842 | WL w, w2; |
|
|
2843 | |
|
|
2844 | assert (activecnt >= -1); |
|
|
2845 | |
|
|
2846 | assert (fdchangemax >= fdchangecnt); |
|
|
2847 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2848 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2849 | |
|
|
2850 | assert (anfdmax >= 0); |
|
|
2851 | for (i = 0; i < anfdmax; ++i) |
|
|
2852 | { |
|
|
2853 | int j = 0; |
|
|
2854 | |
|
|
2855 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
2856 | { |
|
|
2857 | verify_watcher (EV_A_ (W)w); |
|
|
2858 | |
|
|
2859 | if (j++ & 1) |
|
|
2860 | { |
|
|
2861 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
2862 | w2 = w2->next; |
|
|
2863 | } |
|
|
2864 | |
|
|
2865 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
2866 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
2867 | } |
|
|
2868 | } |
|
|
2869 | |
|
|
2870 | assert (timermax >= timercnt); |
|
|
2871 | verify_heap (EV_A_ timers, timercnt); |
|
|
2872 | |
|
|
2873 | #if EV_PERIODIC_ENABLE |
|
|
2874 | assert (periodicmax >= periodiccnt); |
|
|
2875 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2876 | #endif |
|
|
2877 | |
|
|
2878 | for (i = NUMPRI; i--; ) |
|
|
2879 | { |
|
|
2880 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2881 | #if EV_IDLE_ENABLE |
|
|
2882 | assert (idleall >= 0); |
|
|
2883 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2884 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2885 | #endif |
|
|
2886 | } |
|
|
2887 | |
|
|
2888 | #if EV_FORK_ENABLE |
|
|
2889 | assert (forkmax >= forkcnt); |
|
|
2890 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2891 | #endif |
|
|
2892 | |
|
|
2893 | #if EV_CLEANUP_ENABLE |
|
|
2894 | assert (cleanupmax >= cleanupcnt); |
|
|
2895 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2896 | #endif |
|
|
2897 | |
|
|
2898 | #if EV_ASYNC_ENABLE |
|
|
2899 | assert (asyncmax >= asynccnt); |
|
|
2900 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2901 | #endif |
|
|
2902 | |
|
|
2903 | #if EV_PREPARE_ENABLE |
|
|
2904 | assert (preparemax >= preparecnt); |
|
|
2905 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2906 | #endif |
|
|
2907 | |
|
|
2908 | #if EV_CHECK_ENABLE |
|
|
2909 | assert (checkmax >= checkcnt); |
|
|
2910 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2911 | #endif |
|
|
2912 | |
|
|
2913 | # if 0 |
|
|
2914 | #if EV_CHILD_ENABLE |
|
|
2915 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2916 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2917 | #endif |
|
|
2918 | # endif |
|
|
2919 | #endif |
|
|
2920 | } |
|
|
2921 | #endif |
|
|
2922 | |
|
|
2923 | #if EV_MULTIPLICITY |
|
|
2924 | struct ev_loop * ecb_cold |
|
|
2925 | #else |
582 | int |
2926 | int |
583 | ev_method (EV_P) |
2927 | #endif |
|
|
2928 | ev_default_loop (unsigned int flags) EV_THROW |
584 | { |
2929 | { |
585 | return method; |
2930 | if (!ev_default_loop_ptr) |
586 | } |
|
|
587 | |
|
|
588 | static void |
|
|
589 | loop_init (EV_P_ int methods) |
|
|
590 | { |
|
|
591 | if (!method) |
|
|
592 | { |
|
|
593 | #if EV_USE_MONOTONIC |
|
|
594 | { |
2931 | { |
595 | struct timespec ts; |
|
|
596 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
597 | have_monotonic = 1; |
|
|
598 | } |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | rt_now = ev_time (); |
|
|
602 | mn_now = get_clock (); |
|
|
603 | now_floor = mn_now; |
|
|
604 | rtmn_diff = rt_now - mn_now; |
|
|
605 | |
|
|
606 | if (methods == EVMETHOD_AUTO) |
|
|
607 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
608 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
609 | else |
|
|
610 | methods = EVMETHOD_ANY; |
|
|
611 | |
|
|
612 | method = 0; |
|
|
613 | #if EV_USE_KQUEUE |
|
|
614 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
615 | #endif |
|
|
616 | #if EV_USE_EPOLL |
|
|
617 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
618 | #endif |
|
|
619 | #if EV_USE_POLL |
|
|
620 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
621 | #endif |
|
|
622 | #if EV_USE_SELECT |
|
|
623 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
624 | #endif |
|
|
625 | } |
|
|
626 | } |
|
|
627 | |
|
|
628 | void |
|
|
629 | loop_destroy (EV_P) |
|
|
630 | { |
|
|
631 | #if EV_USE_KQUEUE |
|
|
632 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
633 | #endif |
|
|
634 | #if EV_USE_EPOLL |
|
|
635 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
636 | #endif |
|
|
637 | #if EV_USE_POLL |
|
|
638 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
639 | #endif |
|
|
640 | #if EV_USE_SELECT |
|
|
641 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | method = 0; |
|
|
645 | /*TODO*/ |
|
|
646 | } |
|
|
647 | |
|
|
648 | void |
|
|
649 | loop_fork (EV_P) |
|
|
650 | { |
|
|
651 | /*TODO*/ |
|
|
652 | #if EV_USE_EPOLL |
|
|
653 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
654 | #endif |
|
|
655 | #if EV_USE_KQUEUE |
|
|
656 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
657 | #endif |
|
|
658 | } |
|
|
659 | |
|
|
660 | #if EV_MULTIPLICITY |
2932 | #if EV_MULTIPLICITY |
661 | struct ev_loop * |
2933 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
662 | ev_loop_new (int methods) |
|
|
663 | { |
|
|
664 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
665 | |
|
|
666 | loop_init (EV_A_ methods); |
|
|
667 | |
|
|
668 | if (ev_method (EV_A)) |
|
|
669 | return loop; |
|
|
670 | |
|
|
671 | return 0; |
|
|
672 | } |
|
|
673 | |
|
|
674 | void |
|
|
675 | ev_loop_destroy (EV_P) |
|
|
676 | { |
|
|
677 | loop_destroy (EV_A); |
|
|
678 | free (loop); |
|
|
679 | } |
|
|
680 | |
|
|
681 | void |
|
|
682 | ev_loop_fork (EV_P) |
|
|
683 | { |
|
|
684 | loop_fork (EV_A); |
|
|
685 | } |
|
|
686 | |
|
|
687 | #endif |
|
|
688 | |
|
|
689 | #if EV_MULTIPLICITY |
|
|
690 | struct ev_loop default_loop_struct; |
|
|
691 | static struct ev_loop *default_loop; |
|
|
692 | |
|
|
693 | struct ev_loop * |
|
|
694 | #else |
2934 | #else |
695 | static int default_loop; |
|
|
696 | |
|
|
697 | int |
|
|
698 | #endif |
|
|
699 | ev_default_loop (int methods) |
|
|
700 | { |
|
|
701 | if (sigpipe [0] == sigpipe [1]) |
|
|
702 | if (pipe (sigpipe)) |
|
|
703 | return 0; |
|
|
704 | |
|
|
705 | if (!default_loop) |
|
|
706 | { |
|
|
707 | #if EV_MULTIPLICITY |
|
|
708 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
709 | #else |
|
|
710 | default_loop = 1; |
2935 | ev_default_loop_ptr = 1; |
711 | #endif |
2936 | #endif |
712 | |
2937 | |
713 | loop_init (EV_A_ methods); |
2938 | loop_init (EV_A_ flags); |
714 | |
2939 | |
715 | if (ev_method (EV_A)) |
2940 | if (ev_backend (EV_A)) |
716 | { |
2941 | { |
717 | ev_watcher_init (&sigev, sigcb); |
2942 | #if EV_CHILD_ENABLE |
718 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
719 | siginit (EV_A); |
|
|
720 | |
|
|
721 | #ifndef WIN32 |
|
|
722 | ev_signal_init (&childev, childcb, SIGCHLD); |
2943 | ev_signal_init (&childev, childcb, SIGCHLD); |
723 | ev_set_priority (&childev, EV_MAXPRI); |
2944 | ev_set_priority (&childev, EV_MAXPRI); |
724 | ev_signal_start (EV_A_ &childev); |
2945 | ev_signal_start (EV_A_ &childev); |
725 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
2946 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
726 | #endif |
2947 | #endif |
727 | } |
2948 | } |
728 | else |
2949 | else |
729 | default_loop = 0; |
2950 | ev_default_loop_ptr = 0; |
730 | } |
2951 | } |
731 | |
2952 | |
732 | return default_loop; |
2953 | return ev_default_loop_ptr; |
733 | } |
2954 | } |
734 | |
2955 | |
735 | void |
2956 | void |
736 | ev_default_destroy (void) |
2957 | ev_loop_fork (EV_P) EV_THROW |
737 | { |
2958 | { |
738 | #if EV_MULTIPLICITY |
2959 | postfork = 1; |
739 | struct ev_loop *loop = default_loop; |
|
|
740 | #endif |
|
|
741 | |
|
|
742 | ev_ref (EV_A); /* child watcher */ |
|
|
743 | ev_signal_stop (EV_A_ &childev); |
|
|
744 | |
|
|
745 | ev_ref (EV_A); /* signal watcher */ |
|
|
746 | ev_io_stop (EV_A_ &sigev); |
|
|
747 | |
|
|
748 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
749 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
750 | |
|
|
751 | loop_destroy (EV_A); |
|
|
752 | } |
2960 | } |
|
|
2961 | |
|
|
2962 | /*****************************************************************************/ |
753 | |
2963 | |
754 | void |
2964 | void |
755 | ev_default_fork (void) |
2965 | ev_invoke (EV_P_ void *w, int revents) |
756 | { |
2966 | { |
757 | #if EV_MULTIPLICITY |
2967 | EV_CB_INVOKE ((W)w, revents); |
758 | struct ev_loop *loop = default_loop; |
|
|
759 | #endif |
|
|
760 | |
|
|
761 | loop_fork (EV_A); |
|
|
762 | |
|
|
763 | ev_io_stop (EV_A_ &sigev); |
|
|
764 | close (sigpipe [0]); |
|
|
765 | close (sigpipe [1]); |
|
|
766 | pipe (sigpipe); |
|
|
767 | |
|
|
768 | ev_ref (EV_A); /* signal watcher */ |
|
|
769 | siginit (EV_A); |
|
|
770 | } |
2968 | } |
771 | |
2969 | |
772 | /*****************************************************************************/ |
2970 | unsigned int |
773 | |
2971 | ev_pending_count (EV_P) EV_THROW |
774 | static void |
|
|
775 | call_pending (EV_P) |
|
|
776 | { |
2972 | { |
777 | int pri; |
2973 | int pri; |
|
|
2974 | unsigned int count = 0; |
778 | |
2975 | |
779 | for (pri = NUMPRI; pri--; ) |
2976 | for (pri = NUMPRI; pri--; ) |
|
|
2977 | count += pendingcnt [pri]; |
|
|
2978 | |
|
|
2979 | return count; |
|
|
2980 | } |
|
|
2981 | |
|
|
2982 | void noinline |
|
|
2983 | ev_invoke_pending (EV_P) |
|
|
2984 | { |
|
|
2985 | pendingpri = NUMPRI; |
|
|
2986 | |
|
|
2987 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
2988 | { |
|
|
2989 | --pendingpri; |
|
|
2990 | |
780 | while (pendingcnt [pri]) |
2991 | while (pendingcnt [pendingpri]) |
781 | { |
|
|
782 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
783 | |
|
|
784 | if (p->w) |
|
|
785 | { |
|
|
786 | p->w->pending = 0; |
|
|
787 | p->w->cb (EV_A_ p->w, p->events); |
|
|
788 | } |
|
|
789 | } |
|
|
790 | } |
|
|
791 | |
|
|
792 | static void |
|
|
793 | timers_reify (EV_P) |
|
|
794 | { |
|
|
795 | while (timercnt && timers [0]->at <= mn_now) |
|
|
796 | { |
|
|
797 | struct ev_timer *w = timers [0]; |
|
|
798 | |
|
|
799 | /* first reschedule or stop timer */ |
|
|
800 | if (w->repeat) |
|
|
801 | { |
2992 | { |
802 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2993 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
803 | w->at = mn_now + w->repeat; |
2994 | |
804 | downheap ((WT *)timers, timercnt, 0); |
2995 | p->w->pending = 0; |
|
|
2996 | EV_CB_INVOKE (p->w, p->events); |
|
|
2997 | EV_FREQUENT_CHECK; |
805 | } |
2998 | } |
806 | else |
|
|
807 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
808 | |
|
|
809 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
810 | } |
|
|
811 | } |
|
|
812 | |
|
|
813 | static void |
|
|
814 | periodics_reify (EV_P) |
|
|
815 | { |
|
|
816 | while (periodiccnt && periodics [0]->at <= rt_now) |
|
|
817 | { |
2999 | } |
818 | struct ev_periodic *w = periodics [0]; |
3000 | } |
819 | |
3001 | |
820 | /* first reschedule or stop timer */ |
3002 | #if EV_IDLE_ENABLE |
821 | if (w->interval) |
3003 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3004 | /* only when higher priorities are idle" logic */ |
|
|
3005 | inline_size void |
|
|
3006 | idle_reify (EV_P) |
|
|
3007 | { |
|
|
3008 | if (expect_false (idleall)) |
|
|
3009 | { |
|
|
3010 | int pri; |
|
|
3011 | |
|
|
3012 | for (pri = NUMPRI; pri--; ) |
822 | { |
3013 | { |
823 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
3014 | if (pendingcnt [pri]) |
824 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
3015 | break; |
825 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
826 | } |
|
|
827 | else |
|
|
828 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
829 | |
3016 | |
830 | event (EV_A_ (W)w, EV_PERIODIC); |
3017 | if (idlecnt [pri]) |
831 | } |
|
|
832 | } |
|
|
833 | |
|
|
834 | static void |
|
|
835 | periodics_reschedule (EV_P) |
|
|
836 | { |
|
|
837 | int i; |
|
|
838 | |
|
|
839 | /* adjust periodics after time jump */ |
|
|
840 | for (i = 0; i < periodiccnt; ++i) |
|
|
841 | { |
|
|
842 | struct ev_periodic *w = periodics [i]; |
|
|
843 | |
|
|
844 | if (w->interval) |
|
|
845 | { |
|
|
846 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
|
|
847 | |
|
|
848 | if (fabs (diff) >= 1e-4) |
|
|
849 | { |
3018 | { |
850 | ev_periodic_stop (EV_A_ w); |
3019 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
851 | ev_periodic_start (EV_A_ w); |
3020 | break; |
852 | |
|
|
853 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
854 | } |
3021 | } |
855 | } |
3022 | } |
856 | } |
3023 | } |
857 | } |
3024 | } |
|
|
3025 | #endif |
858 | |
3026 | |
859 | inline int |
3027 | /* make timers pending */ |
860 | time_update_monotonic (EV_P) |
3028 | inline_size void |
|
|
3029 | timers_reify (EV_P) |
861 | { |
3030 | { |
862 | mn_now = get_clock (); |
3031 | EV_FREQUENT_CHECK; |
863 | |
3032 | |
864 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
3033 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
865 | { |
|
|
866 | rt_now = rtmn_diff + mn_now; |
|
|
867 | return 0; |
|
|
868 | } |
3034 | { |
869 | else |
3035 | do |
|
|
3036 | { |
|
|
3037 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3038 | |
|
|
3039 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3040 | |
|
|
3041 | /* first reschedule or stop timer */ |
|
|
3042 | if (w->repeat) |
|
|
3043 | { |
|
|
3044 | ev_at (w) += w->repeat; |
|
|
3045 | if (ev_at (w) < mn_now) |
|
|
3046 | ev_at (w) = mn_now; |
|
|
3047 | |
|
|
3048 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
3049 | |
|
|
3050 | ANHE_at_cache (timers [HEAP0]); |
|
|
3051 | downheap (timers, timercnt, HEAP0); |
|
|
3052 | } |
|
|
3053 | else |
|
|
3054 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3055 | |
|
|
3056 | EV_FREQUENT_CHECK; |
|
|
3057 | feed_reverse (EV_A_ (W)w); |
|
|
3058 | } |
|
|
3059 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3060 | |
|
|
3061 | feed_reverse_done (EV_A_ EV_TIMER); |
870 | { |
3062 | } |
871 | now_floor = mn_now; |
3063 | } |
872 | rt_now = ev_time (); |
3064 | |
873 | return 1; |
3065 | #if EV_PERIODIC_ENABLE |
|
|
3066 | |
|
|
3067 | static void noinline |
|
|
3068 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3069 | { |
|
|
3070 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3071 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3072 | |
|
|
3073 | /* the above almost always errs on the low side */ |
|
|
3074 | while (at <= ev_rt_now) |
874 | } |
3075 | { |
875 | } |
3076 | ev_tstamp nat = at + w->interval; |
876 | |
3077 | |
877 | static void |
3078 | /* when resolution fails us, we use ev_rt_now */ |
878 | time_update (EV_P) |
3079 | if (expect_false (nat == at)) |
|
|
3080 | { |
|
|
3081 | at = ev_rt_now; |
|
|
3082 | break; |
|
|
3083 | } |
|
|
3084 | |
|
|
3085 | at = nat; |
|
|
3086 | } |
|
|
3087 | |
|
|
3088 | ev_at (w) = at; |
|
|
3089 | } |
|
|
3090 | |
|
|
3091 | /* make periodics pending */ |
|
|
3092 | inline_size void |
|
|
3093 | periodics_reify (EV_P) |
|
|
3094 | { |
|
|
3095 | EV_FREQUENT_CHECK; |
|
|
3096 | |
|
|
3097 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3098 | { |
|
|
3099 | do |
|
|
3100 | { |
|
|
3101 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3102 | |
|
|
3103 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3104 | |
|
|
3105 | /* first reschedule or stop timer */ |
|
|
3106 | if (w->reschedule_cb) |
|
|
3107 | { |
|
|
3108 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3109 | |
|
|
3110 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3111 | |
|
|
3112 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3113 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3114 | } |
|
|
3115 | else if (w->interval) |
|
|
3116 | { |
|
|
3117 | periodic_recalc (EV_A_ w); |
|
|
3118 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3119 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3120 | } |
|
|
3121 | else |
|
|
3122 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3123 | |
|
|
3124 | EV_FREQUENT_CHECK; |
|
|
3125 | feed_reverse (EV_A_ (W)w); |
|
|
3126 | } |
|
|
3127 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3128 | |
|
|
3129 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3130 | } |
|
|
3131 | } |
|
|
3132 | |
|
|
3133 | /* simply recalculate all periodics */ |
|
|
3134 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3135 | static void noinline ecb_cold |
|
|
3136 | periodics_reschedule (EV_P) |
879 | { |
3137 | { |
880 | int i; |
3138 | int i; |
881 | |
3139 | |
|
|
3140 | /* adjust periodics after time jump */ |
|
|
3141 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3142 | { |
|
|
3143 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3144 | |
|
|
3145 | if (w->reschedule_cb) |
|
|
3146 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3147 | else if (w->interval) |
|
|
3148 | periodic_recalc (EV_A_ w); |
|
|
3149 | |
|
|
3150 | ANHE_at_cache (periodics [i]); |
|
|
3151 | } |
|
|
3152 | |
|
|
3153 | reheap (periodics, periodiccnt); |
|
|
3154 | } |
|
|
3155 | #endif |
|
|
3156 | |
|
|
3157 | /* adjust all timers by a given offset */ |
|
|
3158 | static void noinline ecb_cold |
|
|
3159 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3160 | { |
|
|
3161 | int i; |
|
|
3162 | |
|
|
3163 | for (i = 0; i < timercnt; ++i) |
|
|
3164 | { |
|
|
3165 | ANHE *he = timers + i + HEAP0; |
|
|
3166 | ANHE_w (*he)->at += adjust; |
|
|
3167 | ANHE_at_cache (*he); |
|
|
3168 | } |
|
|
3169 | } |
|
|
3170 | |
|
|
3171 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3172 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3173 | inline_speed void |
|
|
3174 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3175 | { |
882 | #if EV_USE_MONOTONIC |
3176 | #if EV_USE_MONOTONIC |
883 | if (expect_true (have_monotonic)) |
3177 | if (expect_true (have_monotonic)) |
884 | { |
3178 | { |
885 | if (time_update_monotonic (EV_A)) |
3179 | int i; |
|
|
3180 | ev_tstamp odiff = rtmn_diff; |
|
|
3181 | |
|
|
3182 | mn_now = get_clock (); |
|
|
3183 | |
|
|
3184 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3185 | /* interpolate in the meantime */ |
|
|
3186 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
886 | { |
3187 | { |
887 | ev_tstamp odiff = rtmn_diff; |
3188 | ev_rt_now = rtmn_diff + mn_now; |
|
|
3189 | return; |
|
|
3190 | } |
888 | |
3191 | |
|
|
3192 | now_floor = mn_now; |
|
|
3193 | ev_rt_now = ev_time (); |
|
|
3194 | |
889 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
3195 | /* loop a few times, before making important decisions. |
|
|
3196 | * on the choice of "4": one iteration isn't enough, |
|
|
3197 | * in case we get preempted during the calls to |
|
|
3198 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
3199 | * to succeed in that case, though. and looping a few more times |
|
|
3200 | * doesn't hurt either as we only do this on time-jumps or |
|
|
3201 | * in the unlikely event of having been preempted here. |
|
|
3202 | */ |
|
|
3203 | for (i = 4; --i; ) |
890 | { |
3204 | { |
|
|
3205 | ev_tstamp diff; |
891 | rtmn_diff = rt_now - mn_now; |
3206 | rtmn_diff = ev_rt_now - mn_now; |
892 | |
3207 | |
893 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
3208 | diff = odiff - rtmn_diff; |
|
|
3209 | |
|
|
3210 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
894 | return; /* all is well */ |
3211 | return; /* all is well */ |
895 | |
3212 | |
896 | rt_now = ev_time (); |
3213 | ev_rt_now = ev_time (); |
897 | mn_now = get_clock (); |
3214 | mn_now = get_clock (); |
898 | now_floor = mn_now; |
3215 | now_floor = mn_now; |
899 | } |
3216 | } |
900 | |
3217 | |
|
|
3218 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3219 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
3220 | # if EV_PERIODIC_ENABLE |
|
|
3221 | periodics_reschedule (EV_A); |
|
|
3222 | # endif |
|
|
3223 | } |
|
|
3224 | else |
|
|
3225 | #endif |
|
|
3226 | { |
|
|
3227 | ev_rt_now = ev_time (); |
|
|
3228 | |
|
|
3229 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
3230 | { |
|
|
3231 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3232 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
3233 | #if EV_PERIODIC_ENABLE |
901 | periodics_reschedule (EV_A); |
3234 | periodics_reschedule (EV_A); |
902 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
3235 | #endif |
903 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
904 | } |
3236 | } |
905 | } |
|
|
906 | else |
|
|
907 | #endif |
|
|
908 | { |
|
|
909 | rt_now = ev_time (); |
|
|
910 | |
3237 | |
911 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
912 | { |
|
|
913 | periodics_reschedule (EV_A); |
|
|
914 | |
|
|
915 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
916 | for (i = 0; i < timercnt; ++i) |
|
|
917 | timers [i]->at += rt_now - mn_now; |
|
|
918 | } |
|
|
919 | |
|
|
920 | mn_now = rt_now; |
3238 | mn_now = ev_rt_now; |
921 | } |
3239 | } |
922 | } |
3240 | } |
923 | |
3241 | |
924 | void |
3242 | int |
925 | ev_ref (EV_P) |
|
|
926 | { |
|
|
927 | ++activecnt; |
|
|
928 | } |
|
|
929 | |
|
|
930 | void |
|
|
931 | ev_unref (EV_P) |
|
|
932 | { |
|
|
933 | --activecnt; |
|
|
934 | } |
|
|
935 | |
|
|
936 | static int loop_done; |
|
|
937 | |
|
|
938 | void |
|
|
939 | ev_loop (EV_P_ int flags) |
3243 | ev_run (EV_P_ int flags) |
940 | { |
3244 | { |
941 | double block; |
3245 | #if EV_FEATURE_API |
942 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
3246 | ++loop_depth; |
|
|
3247 | #endif |
|
|
3248 | |
|
|
3249 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
3250 | |
|
|
3251 | loop_done = EVBREAK_CANCEL; |
|
|
3252 | |
|
|
3253 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
943 | |
3254 | |
944 | do |
3255 | do |
945 | { |
3256 | { |
|
|
3257 | #if EV_VERIFY >= 2 |
|
|
3258 | ev_verify (EV_A); |
|
|
3259 | #endif |
|
|
3260 | |
|
|
3261 | #ifndef _WIN32 |
|
|
3262 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
3263 | if (expect_false (getpid () != curpid)) |
|
|
3264 | { |
|
|
3265 | curpid = getpid (); |
|
|
3266 | postfork = 1; |
|
|
3267 | } |
|
|
3268 | #endif |
|
|
3269 | |
|
|
3270 | #if EV_FORK_ENABLE |
|
|
3271 | /* we might have forked, so queue fork handlers */ |
|
|
3272 | if (expect_false (postfork)) |
|
|
3273 | if (forkcnt) |
|
|
3274 | { |
|
|
3275 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
3276 | EV_INVOKE_PENDING; |
|
|
3277 | } |
|
|
3278 | #endif |
|
|
3279 | |
|
|
3280 | #if EV_PREPARE_ENABLE |
946 | /* queue check watchers (and execute them) */ |
3281 | /* queue prepare watchers (and execute them) */ |
947 | if (expect_false (preparecnt)) |
3282 | if (expect_false (preparecnt)) |
948 | { |
3283 | { |
949 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
3284 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
950 | call_pending (EV_A); |
3285 | EV_INVOKE_PENDING; |
951 | } |
3286 | } |
|
|
3287 | #endif |
|
|
3288 | |
|
|
3289 | if (expect_false (loop_done)) |
|
|
3290 | break; |
|
|
3291 | |
|
|
3292 | /* we might have forked, so reify kernel state if necessary */ |
|
|
3293 | if (expect_false (postfork)) |
|
|
3294 | loop_fork (EV_A); |
952 | |
3295 | |
953 | /* update fd-related kernel structures */ |
3296 | /* update fd-related kernel structures */ |
954 | fd_reify (EV_A); |
3297 | fd_reify (EV_A); |
955 | |
3298 | |
956 | /* calculate blocking time */ |
3299 | /* calculate blocking time */ |
|
|
3300 | { |
|
|
3301 | ev_tstamp waittime = 0.; |
|
|
3302 | ev_tstamp sleeptime = 0.; |
957 | |
3303 | |
958 | /* we only need this for !monotonic clockor timers, but as we basically |
3304 | /* remember old timestamp for io_blocktime calculation */ |
959 | always have timers, we just calculate it always */ |
3305 | ev_tstamp prev_mn_now = mn_now; |
960 | #if EV_USE_MONOTONIC |
3306 | |
961 | if (expect_true (have_monotonic)) |
3307 | /* update time to cancel out callback processing overhead */ |
962 | time_update_monotonic (EV_A); |
3308 | time_update (EV_A_ 1e100); |
963 | else |
3309 | |
964 | #endif |
3310 | /* from now on, we want a pipe-wake-up */ |
|
|
3311 | pipe_write_wanted = 1; |
|
|
3312 | |
|
|
3313 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3314 | |
|
|
3315 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
965 | { |
3316 | { |
966 | rt_now = ev_time (); |
|
|
967 | mn_now = rt_now; |
|
|
968 | } |
|
|
969 | |
|
|
970 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
971 | block = 0.; |
|
|
972 | else |
|
|
973 | { |
|
|
974 | block = MAX_BLOCKTIME; |
3317 | waittime = MAX_BLOCKTIME; |
975 | |
3318 | |
976 | if (timercnt) |
3319 | if (timercnt) |
977 | { |
3320 | { |
978 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
3321 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
979 | if (block > to) block = to; |
3322 | if (waittime > to) waittime = to; |
980 | } |
3323 | } |
981 | |
3324 | |
|
|
3325 | #if EV_PERIODIC_ENABLE |
982 | if (periodiccnt) |
3326 | if (periodiccnt) |
983 | { |
3327 | { |
984 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
3328 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
985 | if (block > to) block = to; |
3329 | if (waittime > to) waittime = to; |
986 | } |
3330 | } |
|
|
3331 | #endif |
987 | |
3332 | |
988 | if (block < 0.) block = 0.; |
3333 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3334 | if (expect_false (waittime < timeout_blocktime)) |
|
|
3335 | waittime = timeout_blocktime; |
|
|
3336 | |
|
|
3337 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3338 | /* to pass a minimum nonzero value to the backend */ |
|
|
3339 | if (expect_false (waittime < backend_mintime)) |
|
|
3340 | waittime = backend_mintime; |
|
|
3341 | |
|
|
3342 | /* extra check because io_blocktime is commonly 0 */ |
|
|
3343 | if (expect_false (io_blocktime)) |
|
|
3344 | { |
|
|
3345 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3346 | |
|
|
3347 | if (sleeptime > waittime - backend_mintime) |
|
|
3348 | sleeptime = waittime - backend_mintime; |
|
|
3349 | |
|
|
3350 | if (expect_true (sleeptime > 0.)) |
|
|
3351 | { |
|
|
3352 | ev_sleep (sleeptime); |
|
|
3353 | waittime -= sleeptime; |
|
|
3354 | } |
|
|
3355 | } |
989 | } |
3356 | } |
990 | |
3357 | |
991 | method_poll (EV_A_ block); |
3358 | #if EV_FEATURE_API |
|
|
3359 | ++loop_count; |
|
|
3360 | #endif |
|
|
3361 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
3362 | backend_poll (EV_A_ waittime); |
|
|
3363 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
992 | |
3364 | |
|
|
3365 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3366 | |
|
|
3367 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3368 | if (pipe_write_skipped) |
|
|
3369 | { |
|
|
3370 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3371 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3372 | } |
|
|
3373 | |
|
|
3374 | |
993 | /* update rt_now, do magic */ |
3375 | /* update ev_rt_now, do magic */ |
994 | time_update (EV_A); |
3376 | time_update (EV_A_ waittime + sleeptime); |
|
|
3377 | } |
995 | |
3378 | |
996 | /* queue pending timers and reschedule them */ |
3379 | /* queue pending timers and reschedule them */ |
997 | timers_reify (EV_A); /* relative timers called last */ |
3380 | timers_reify (EV_A); /* relative timers called last */ |
|
|
3381 | #if EV_PERIODIC_ENABLE |
998 | periodics_reify (EV_A); /* absolute timers called first */ |
3382 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
3383 | #endif |
999 | |
3384 | |
|
|
3385 | #if EV_IDLE_ENABLE |
1000 | /* queue idle watchers unless io or timers are pending */ |
3386 | /* queue idle watchers unless other events are pending */ |
1001 | if (!pendingcnt) |
3387 | idle_reify (EV_A); |
1002 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
3388 | #endif |
1003 | |
3389 | |
|
|
3390 | #if EV_CHECK_ENABLE |
1004 | /* queue check watchers, to be executed first */ |
3391 | /* queue check watchers, to be executed first */ |
1005 | if (checkcnt) |
3392 | if (expect_false (checkcnt)) |
1006 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3393 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3394 | #endif |
1007 | |
3395 | |
1008 | call_pending (EV_A); |
3396 | EV_INVOKE_PENDING; |
1009 | } |
3397 | } |
1010 | while (activecnt && !loop_done); |
3398 | while (expect_true ( |
|
|
3399 | activecnt |
|
|
3400 | && !loop_done |
|
|
3401 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3402 | )); |
1011 | |
3403 | |
1012 | if (loop_done != 2) |
3404 | if (loop_done == EVBREAK_ONE) |
1013 | loop_done = 0; |
3405 | loop_done = EVBREAK_CANCEL; |
|
|
3406 | |
|
|
3407 | #if EV_FEATURE_API |
|
|
3408 | --loop_depth; |
|
|
3409 | #endif |
|
|
3410 | |
|
|
3411 | return activecnt; |
1014 | } |
3412 | } |
1015 | |
3413 | |
1016 | void |
3414 | void |
1017 | ev_unloop (EV_P_ int how) |
3415 | ev_break (EV_P_ int how) EV_THROW |
1018 | { |
3416 | { |
1019 | loop_done = how; |
3417 | loop_done = how; |
1020 | } |
3418 | } |
1021 | |
3419 | |
|
|
3420 | void |
|
|
3421 | ev_ref (EV_P) EV_THROW |
|
|
3422 | { |
|
|
3423 | ++activecnt; |
|
|
3424 | } |
|
|
3425 | |
|
|
3426 | void |
|
|
3427 | ev_unref (EV_P) EV_THROW |
|
|
3428 | { |
|
|
3429 | --activecnt; |
|
|
3430 | } |
|
|
3431 | |
|
|
3432 | void |
|
|
3433 | ev_now_update (EV_P) EV_THROW |
|
|
3434 | { |
|
|
3435 | time_update (EV_A_ 1e100); |
|
|
3436 | } |
|
|
3437 | |
|
|
3438 | void |
|
|
3439 | ev_suspend (EV_P) EV_THROW |
|
|
3440 | { |
|
|
3441 | ev_now_update (EV_A); |
|
|
3442 | } |
|
|
3443 | |
|
|
3444 | void |
|
|
3445 | ev_resume (EV_P) EV_THROW |
|
|
3446 | { |
|
|
3447 | ev_tstamp mn_prev = mn_now; |
|
|
3448 | |
|
|
3449 | ev_now_update (EV_A); |
|
|
3450 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3451 | #if EV_PERIODIC_ENABLE |
|
|
3452 | /* TODO: really do this? */ |
|
|
3453 | periodics_reschedule (EV_A); |
|
|
3454 | #endif |
|
|
3455 | } |
|
|
3456 | |
1022 | /*****************************************************************************/ |
3457 | /*****************************************************************************/ |
|
|
3458 | /* singly-linked list management, used when the expected list length is short */ |
1023 | |
3459 | |
1024 | inline void |
3460 | inline_size void |
1025 | wlist_add (WL *head, WL elem) |
3461 | wlist_add (WL *head, WL elem) |
1026 | { |
3462 | { |
1027 | elem->next = *head; |
3463 | elem->next = *head; |
1028 | *head = elem; |
3464 | *head = elem; |
1029 | } |
3465 | } |
1030 | |
3466 | |
1031 | inline void |
3467 | inline_size void |
1032 | wlist_del (WL *head, WL elem) |
3468 | wlist_del (WL *head, WL elem) |
1033 | { |
3469 | { |
1034 | while (*head) |
3470 | while (*head) |
1035 | { |
3471 | { |
1036 | if (*head == elem) |
3472 | if (expect_true (*head == elem)) |
1037 | { |
3473 | { |
1038 | *head = elem->next; |
3474 | *head = elem->next; |
1039 | return; |
3475 | break; |
1040 | } |
3476 | } |
1041 | |
3477 | |
1042 | head = &(*head)->next; |
3478 | head = &(*head)->next; |
1043 | } |
3479 | } |
1044 | } |
3480 | } |
1045 | |
3481 | |
|
|
3482 | /* internal, faster, version of ev_clear_pending */ |
1046 | inline void |
3483 | inline_speed void |
1047 | ev_clear_pending (EV_P_ W w) |
3484 | clear_pending (EV_P_ W w) |
1048 | { |
3485 | { |
1049 | if (w->pending) |
3486 | if (w->pending) |
1050 | { |
3487 | { |
1051 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
3488 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1052 | w->pending = 0; |
3489 | w->pending = 0; |
1053 | } |
3490 | } |
1054 | } |
3491 | } |
1055 | |
3492 | |
|
|
3493 | int |
|
|
3494 | ev_clear_pending (EV_P_ void *w) EV_THROW |
|
|
3495 | { |
|
|
3496 | W w_ = (W)w; |
|
|
3497 | int pending = w_->pending; |
|
|
3498 | |
|
|
3499 | if (expect_true (pending)) |
|
|
3500 | { |
|
|
3501 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3502 | p->w = (W)&pending_w; |
|
|
3503 | w_->pending = 0; |
|
|
3504 | return p->events; |
|
|
3505 | } |
|
|
3506 | else |
|
|
3507 | return 0; |
|
|
3508 | } |
|
|
3509 | |
1056 | inline void |
3510 | inline_size void |
|
|
3511 | pri_adjust (EV_P_ W w) |
|
|
3512 | { |
|
|
3513 | int pri = ev_priority (w); |
|
|
3514 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
3515 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
3516 | ev_set_priority (w, pri); |
|
|
3517 | } |
|
|
3518 | |
|
|
3519 | inline_speed void |
1057 | ev_start (EV_P_ W w, int active) |
3520 | ev_start (EV_P_ W w, int active) |
1058 | { |
3521 | { |
1059 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
3522 | pri_adjust (EV_A_ w); |
1060 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1061 | |
|
|
1062 | w->active = active; |
3523 | w->active = active; |
1063 | ev_ref (EV_A); |
3524 | ev_ref (EV_A); |
1064 | } |
3525 | } |
1065 | |
3526 | |
1066 | inline void |
3527 | inline_size void |
1067 | ev_stop (EV_P_ W w) |
3528 | ev_stop (EV_P_ W w) |
1068 | { |
3529 | { |
1069 | ev_unref (EV_A); |
3530 | ev_unref (EV_A); |
1070 | w->active = 0; |
3531 | w->active = 0; |
1071 | } |
3532 | } |
1072 | |
3533 | |
1073 | /*****************************************************************************/ |
3534 | /*****************************************************************************/ |
1074 | |
3535 | |
1075 | void |
3536 | void noinline |
1076 | ev_io_start (EV_P_ struct ev_io *w) |
3537 | ev_io_start (EV_P_ ev_io *w) EV_THROW |
1077 | { |
3538 | { |
1078 | int fd = w->fd; |
3539 | int fd = w->fd; |
1079 | |
3540 | |
1080 | if (ev_is_active (w)) |
3541 | if (expect_false (ev_is_active (w))) |
1081 | return; |
3542 | return; |
1082 | |
3543 | |
1083 | assert (("ev_io_start called with negative fd", fd >= 0)); |
3544 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
3545 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
3546 | |
|
|
3547 | EV_FREQUENT_CHECK; |
1084 | |
3548 | |
1085 | ev_start (EV_A_ (W)w, 1); |
3549 | ev_start (EV_A_ (W)w, 1); |
1086 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
3550 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1087 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
3551 | wlist_add (&anfds[fd].head, (WL)w); |
1088 | |
3552 | |
1089 | fd_change (EV_A_ fd); |
3553 | /* common bug, apparently */ |
1090 | } |
3554 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
1091 | |
3555 | |
1092 | void |
3556 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
3557 | w->events &= ~EV__IOFDSET; |
|
|
3558 | |
|
|
3559 | EV_FREQUENT_CHECK; |
|
|
3560 | } |
|
|
3561 | |
|
|
3562 | void noinline |
1093 | ev_io_stop (EV_P_ struct ev_io *w) |
3563 | ev_io_stop (EV_P_ ev_io *w) EV_THROW |
1094 | { |
3564 | { |
1095 | ev_clear_pending (EV_A_ (W)w); |
3565 | clear_pending (EV_A_ (W)w); |
1096 | if (!ev_is_active (w)) |
3566 | if (expect_false (!ev_is_active (w))) |
1097 | return; |
3567 | return; |
1098 | |
3568 | |
|
|
3569 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3570 | |
|
|
3571 | EV_FREQUENT_CHECK; |
|
|
3572 | |
1099 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
3573 | wlist_del (&anfds[w->fd].head, (WL)w); |
1100 | ev_stop (EV_A_ (W)w); |
3574 | ev_stop (EV_A_ (W)w); |
1101 | |
3575 | |
1102 | fd_change (EV_A_ w->fd); |
3576 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
1103 | } |
|
|
1104 | |
3577 | |
1105 | void |
3578 | EV_FREQUENT_CHECK; |
|
|
3579 | } |
|
|
3580 | |
|
|
3581 | void noinline |
1106 | ev_timer_start (EV_P_ struct ev_timer *w) |
3582 | ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
1107 | { |
3583 | { |
1108 | if (ev_is_active (w)) |
3584 | if (expect_false (ev_is_active (w))) |
1109 | return; |
3585 | return; |
1110 | |
3586 | |
1111 | w->at += mn_now; |
3587 | ev_at (w) += mn_now; |
1112 | |
3588 | |
1113 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
3589 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1114 | |
3590 | |
|
|
3591 | EV_FREQUENT_CHECK; |
|
|
3592 | |
|
|
3593 | ++timercnt; |
1115 | ev_start (EV_A_ (W)w, ++timercnt); |
3594 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1116 | array_needsize (timers, timermax, timercnt, ); |
3595 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1117 | timers [timercnt - 1] = w; |
3596 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1118 | upheap ((WT *)timers, timercnt - 1); |
3597 | ANHE_at_cache (timers [ev_active (w)]); |
1119 | } |
3598 | upheap (timers, ev_active (w)); |
1120 | |
3599 | |
1121 | void |
3600 | EV_FREQUENT_CHECK; |
|
|
3601 | |
|
|
3602 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
3603 | } |
|
|
3604 | |
|
|
3605 | void noinline |
1122 | ev_timer_stop (EV_P_ struct ev_timer *w) |
3606 | ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
1123 | { |
3607 | { |
1124 | ev_clear_pending (EV_A_ (W)w); |
3608 | clear_pending (EV_A_ (W)w); |
1125 | if (!ev_is_active (w)) |
3609 | if (expect_false (!ev_is_active (w))) |
1126 | return; |
3610 | return; |
1127 | |
3611 | |
1128 | if (w->active < timercnt--) |
3612 | EV_FREQUENT_CHECK; |
|
|
3613 | |
|
|
3614 | { |
|
|
3615 | int active = ev_active (w); |
|
|
3616 | |
|
|
3617 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3618 | |
|
|
3619 | --timercnt; |
|
|
3620 | |
|
|
3621 | if (expect_true (active < timercnt + HEAP0)) |
1129 | { |
3622 | { |
1130 | timers [w->active - 1] = timers [timercnt]; |
3623 | timers [active] = timers [timercnt + HEAP0]; |
1131 | downheap ((WT *)timers, timercnt, w->active - 1); |
3624 | adjustheap (timers, timercnt, active); |
1132 | } |
3625 | } |
|
|
3626 | } |
1133 | |
3627 | |
1134 | w->at = w->repeat; |
3628 | ev_at (w) -= mn_now; |
1135 | |
3629 | |
1136 | ev_stop (EV_A_ (W)w); |
3630 | ev_stop (EV_A_ (W)w); |
1137 | } |
|
|
1138 | |
3631 | |
1139 | void |
3632 | EV_FREQUENT_CHECK; |
|
|
3633 | } |
|
|
3634 | |
|
|
3635 | void noinline |
1140 | ev_timer_again (EV_P_ struct ev_timer *w) |
3636 | ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
1141 | { |
3637 | { |
|
|
3638 | EV_FREQUENT_CHECK; |
|
|
3639 | |
|
|
3640 | clear_pending (EV_A_ (W)w); |
|
|
3641 | |
1142 | if (ev_is_active (w)) |
3642 | if (ev_is_active (w)) |
1143 | { |
3643 | { |
1144 | if (w->repeat) |
3644 | if (w->repeat) |
1145 | { |
3645 | { |
1146 | w->at = mn_now + w->repeat; |
3646 | ev_at (w) = mn_now + w->repeat; |
|
|
3647 | ANHE_at_cache (timers [ev_active (w)]); |
1147 | downheap ((WT *)timers, timercnt, w->active - 1); |
3648 | adjustheap (timers, timercnt, ev_active (w)); |
1148 | } |
3649 | } |
1149 | else |
3650 | else |
1150 | ev_timer_stop (EV_A_ w); |
3651 | ev_timer_stop (EV_A_ w); |
1151 | } |
3652 | } |
1152 | else if (w->repeat) |
3653 | else if (w->repeat) |
|
|
3654 | { |
|
|
3655 | ev_at (w) = w->repeat; |
1153 | ev_timer_start (EV_A_ w); |
3656 | ev_timer_start (EV_A_ w); |
1154 | } |
3657 | } |
1155 | |
3658 | |
1156 | void |
3659 | EV_FREQUENT_CHECK; |
|
|
3660 | } |
|
|
3661 | |
|
|
3662 | ev_tstamp |
|
|
3663 | ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
|
|
3664 | { |
|
|
3665 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
3666 | } |
|
|
3667 | |
|
|
3668 | #if EV_PERIODIC_ENABLE |
|
|
3669 | void noinline |
1157 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
3670 | ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
1158 | { |
3671 | { |
1159 | if (ev_is_active (w)) |
3672 | if (expect_false (ev_is_active (w))) |
1160 | return; |
3673 | return; |
1161 | |
3674 | |
|
|
3675 | if (w->reschedule_cb) |
|
|
3676 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3677 | else if (w->interval) |
|
|
3678 | { |
1162 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3679 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
3680 | periodic_recalc (EV_A_ w); |
|
|
3681 | } |
|
|
3682 | else |
|
|
3683 | ev_at (w) = w->offset; |
1163 | |
3684 | |
1164 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
3685 | EV_FREQUENT_CHECK; |
1165 | if (w->interval) |
|
|
1166 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
|
|
1167 | |
3686 | |
|
|
3687 | ++periodiccnt; |
1168 | ev_start (EV_A_ (W)w, ++periodiccnt); |
3688 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1169 | array_needsize (periodics, periodicmax, periodiccnt, ); |
3689 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1170 | periodics [periodiccnt - 1] = w; |
3690 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1171 | upheap ((WT *)periodics, periodiccnt - 1); |
3691 | ANHE_at_cache (periodics [ev_active (w)]); |
1172 | } |
3692 | upheap (periodics, ev_active (w)); |
1173 | |
3693 | |
1174 | void |
3694 | EV_FREQUENT_CHECK; |
|
|
3695 | |
|
|
3696 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
3697 | } |
|
|
3698 | |
|
|
3699 | void noinline |
1175 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
3700 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
1176 | { |
3701 | { |
1177 | ev_clear_pending (EV_A_ (W)w); |
3702 | clear_pending (EV_A_ (W)w); |
1178 | if (!ev_is_active (w)) |
3703 | if (expect_false (!ev_is_active (w))) |
1179 | return; |
3704 | return; |
1180 | |
3705 | |
1181 | if (w->active < periodiccnt--) |
3706 | EV_FREQUENT_CHECK; |
|
|
3707 | |
|
|
3708 | { |
|
|
3709 | int active = ev_active (w); |
|
|
3710 | |
|
|
3711 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
3712 | |
|
|
3713 | --periodiccnt; |
|
|
3714 | |
|
|
3715 | if (expect_true (active < periodiccnt + HEAP0)) |
1182 | { |
3716 | { |
1183 | periodics [w->active - 1] = periodics [periodiccnt]; |
3717 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1184 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
3718 | adjustheap (periodics, periodiccnt, active); |
1185 | } |
3719 | } |
|
|
3720 | } |
1186 | |
3721 | |
1187 | ev_stop (EV_A_ (W)w); |
3722 | ev_stop (EV_A_ (W)w); |
1188 | } |
|
|
1189 | |
3723 | |
1190 | void |
3724 | EV_FREQUENT_CHECK; |
1191 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1192 | { |
|
|
1193 | if (ev_is_active (w)) |
|
|
1194 | return; |
|
|
1195 | |
|
|
1196 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1197 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1198 | idles [idlecnt - 1] = w; |
|
|
1199 | } |
3725 | } |
1200 | |
3726 | |
1201 | void |
3727 | void noinline |
1202 | ev_idle_stop (EV_P_ struct ev_idle *w) |
3728 | ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
1203 | { |
3729 | { |
1204 | ev_clear_pending (EV_A_ (W)w); |
3730 | /* TODO: use adjustheap and recalculation */ |
1205 | if (ev_is_active (w)) |
|
|
1206 | return; |
|
|
1207 | |
|
|
1208 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1209 | ev_stop (EV_A_ (W)w); |
3731 | ev_periodic_stop (EV_A_ w); |
|
|
3732 | ev_periodic_start (EV_A_ w); |
1210 | } |
3733 | } |
1211 | |
3734 | #endif |
1212 | void |
|
|
1213 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1214 | { |
|
|
1215 | if (ev_is_active (w)) |
|
|
1216 | return; |
|
|
1217 | |
|
|
1218 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1219 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1220 | prepares [preparecnt - 1] = w; |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | void |
|
|
1224 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1225 | { |
|
|
1226 | ev_clear_pending (EV_A_ (W)w); |
|
|
1227 | if (ev_is_active (w)) |
|
|
1228 | return; |
|
|
1229 | |
|
|
1230 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1231 | ev_stop (EV_A_ (W)w); |
|
|
1232 | } |
|
|
1233 | |
|
|
1234 | void |
|
|
1235 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1236 | { |
|
|
1237 | if (ev_is_active (w)) |
|
|
1238 | return; |
|
|
1239 | |
|
|
1240 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1241 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1242 | checks [checkcnt - 1] = w; |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | void |
|
|
1246 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1247 | { |
|
|
1248 | ev_clear_pending (EV_A_ (W)w); |
|
|
1249 | if (ev_is_active (w)) |
|
|
1250 | return; |
|
|
1251 | |
|
|
1252 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1253 | ev_stop (EV_A_ (W)w); |
|
|
1254 | } |
|
|
1255 | |
3735 | |
1256 | #ifndef SA_RESTART |
3736 | #ifndef SA_RESTART |
1257 | # define SA_RESTART 0 |
3737 | # define SA_RESTART 0 |
1258 | #endif |
3738 | #endif |
1259 | |
3739 | |
|
|
3740 | #if EV_SIGNAL_ENABLE |
|
|
3741 | |
|
|
3742 | void noinline |
|
|
3743 | ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
|
|
3744 | { |
|
|
3745 | if (expect_false (ev_is_active (w))) |
|
|
3746 | return; |
|
|
3747 | |
|
|
3748 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
3749 | |
|
|
3750 | #if EV_MULTIPLICITY |
|
|
3751 | assert (("libev: a signal must not be attached to two different loops", |
|
|
3752 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
3753 | |
|
|
3754 | signals [w->signum - 1].loop = EV_A; |
|
|
3755 | ECB_MEMORY_FENCE_RELEASE; |
|
|
3756 | #endif |
|
|
3757 | |
|
|
3758 | EV_FREQUENT_CHECK; |
|
|
3759 | |
|
|
3760 | #if EV_USE_SIGNALFD |
|
|
3761 | if (sigfd == -2) |
|
|
3762 | { |
|
|
3763 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
3764 | if (sigfd < 0 && errno == EINVAL) |
|
|
3765 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
3766 | |
|
|
3767 | if (sigfd >= 0) |
|
|
3768 | { |
|
|
3769 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
3770 | |
|
|
3771 | sigemptyset (&sigfd_set); |
|
|
3772 | |
|
|
3773 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
3774 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
3775 | ev_io_start (EV_A_ &sigfd_w); |
|
|
3776 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
3777 | } |
|
|
3778 | } |
|
|
3779 | |
|
|
3780 | if (sigfd >= 0) |
|
|
3781 | { |
|
|
3782 | /* TODO: check .head */ |
|
|
3783 | sigaddset (&sigfd_set, w->signum); |
|
|
3784 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
3785 | |
|
|
3786 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3787 | } |
|
|
3788 | #endif |
|
|
3789 | |
|
|
3790 | ev_start (EV_A_ (W)w, 1); |
|
|
3791 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
3792 | |
|
|
3793 | if (!((WL)w)->next) |
|
|
3794 | # if EV_USE_SIGNALFD |
|
|
3795 | if (sigfd < 0) /*TODO*/ |
|
|
3796 | # endif |
|
|
3797 | { |
|
|
3798 | # ifdef _WIN32 |
|
|
3799 | evpipe_init (EV_A); |
|
|
3800 | |
|
|
3801 | signal (w->signum, ev_sighandler); |
|
|
3802 | # else |
|
|
3803 | struct sigaction sa; |
|
|
3804 | |
|
|
3805 | evpipe_init (EV_A); |
|
|
3806 | |
|
|
3807 | sa.sa_handler = ev_sighandler; |
|
|
3808 | sigfillset (&sa.sa_mask); |
|
|
3809 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
3810 | sigaction (w->signum, &sa, 0); |
|
|
3811 | |
|
|
3812 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3813 | { |
|
|
3814 | sigemptyset (&sa.sa_mask); |
|
|
3815 | sigaddset (&sa.sa_mask, w->signum); |
|
|
3816 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3817 | } |
|
|
3818 | #endif |
|
|
3819 | } |
|
|
3820 | |
|
|
3821 | EV_FREQUENT_CHECK; |
|
|
3822 | } |
|
|
3823 | |
|
|
3824 | void noinline |
|
|
3825 | ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
|
|
3826 | { |
|
|
3827 | clear_pending (EV_A_ (W)w); |
|
|
3828 | if (expect_false (!ev_is_active (w))) |
|
|
3829 | return; |
|
|
3830 | |
|
|
3831 | EV_FREQUENT_CHECK; |
|
|
3832 | |
|
|
3833 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
3834 | ev_stop (EV_A_ (W)w); |
|
|
3835 | |
|
|
3836 | if (!signals [w->signum - 1].head) |
|
|
3837 | { |
|
|
3838 | #if EV_MULTIPLICITY |
|
|
3839 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3840 | #endif |
|
|
3841 | #if EV_USE_SIGNALFD |
|
|
3842 | if (sigfd >= 0) |
|
|
3843 | { |
|
|
3844 | sigset_t ss; |
|
|
3845 | |
|
|
3846 | sigemptyset (&ss); |
|
|
3847 | sigaddset (&ss, w->signum); |
|
|
3848 | sigdelset (&sigfd_set, w->signum); |
|
|
3849 | |
|
|
3850 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3851 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
3852 | } |
|
|
3853 | else |
|
|
3854 | #endif |
|
|
3855 | signal (w->signum, SIG_DFL); |
|
|
3856 | } |
|
|
3857 | |
|
|
3858 | EV_FREQUENT_CHECK; |
|
|
3859 | } |
|
|
3860 | |
|
|
3861 | #endif |
|
|
3862 | |
|
|
3863 | #if EV_CHILD_ENABLE |
|
|
3864 | |
1260 | void |
3865 | void |
1261 | ev_signal_start (EV_P_ struct ev_signal *w) |
3866 | ev_child_start (EV_P_ ev_child *w) EV_THROW |
1262 | { |
3867 | { |
1263 | #if EV_MULTIPLICITY |
3868 | #if EV_MULTIPLICITY |
1264 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
3869 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1265 | #endif |
3870 | #endif |
1266 | if (ev_is_active (w)) |
3871 | if (expect_false (ev_is_active (w))) |
1267 | return; |
3872 | return; |
1268 | |
3873 | |
1269 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
3874 | EV_FREQUENT_CHECK; |
1270 | |
3875 | |
1271 | ev_start (EV_A_ (W)w, 1); |
3876 | ev_start (EV_A_ (W)w, 1); |
1272 | array_needsize (signals, signalmax, w->signum, signals_init); |
3877 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1273 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1274 | |
3878 | |
1275 | if (!w->next) |
3879 | EV_FREQUENT_CHECK; |
1276 | { |
|
|
1277 | struct sigaction sa; |
|
|
1278 | sa.sa_handler = sighandler; |
|
|
1279 | sigfillset (&sa.sa_mask); |
|
|
1280 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1281 | sigaction (w->signum, &sa, 0); |
|
|
1282 | } |
|
|
1283 | } |
3880 | } |
1284 | |
3881 | |
1285 | void |
3882 | void |
1286 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3883 | ev_child_stop (EV_P_ ev_child *w) EV_THROW |
1287 | { |
3884 | { |
1288 | ev_clear_pending (EV_A_ (W)w); |
3885 | clear_pending (EV_A_ (W)w); |
1289 | if (!ev_is_active (w)) |
3886 | if (expect_false (!ev_is_active (w))) |
1290 | return; |
3887 | return; |
1291 | |
3888 | |
1292 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3889 | EV_FREQUENT_CHECK; |
|
|
3890 | |
|
|
3891 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1293 | ev_stop (EV_A_ (W)w); |
3892 | ev_stop (EV_A_ (W)w); |
1294 | |
3893 | |
1295 | if (!signals [w->signum - 1].head) |
3894 | EV_FREQUENT_CHECK; |
1296 | signal (w->signum, SIG_DFL); |
|
|
1297 | } |
3895 | } |
|
|
3896 | |
|
|
3897 | #endif |
|
|
3898 | |
|
|
3899 | #if EV_STAT_ENABLE |
|
|
3900 | |
|
|
3901 | # ifdef _WIN32 |
|
|
3902 | # undef lstat |
|
|
3903 | # define lstat(a,b) _stati64 (a,b) |
|
|
3904 | # endif |
|
|
3905 | |
|
|
3906 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3907 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
3908 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
3909 | |
|
|
3910 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
3911 | |
|
|
3912 | #if EV_USE_INOTIFY |
|
|
3913 | |
|
|
3914 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
3915 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
3916 | |
|
|
3917 | static void noinline |
|
|
3918 | infy_add (EV_P_ ev_stat *w) |
|
|
3919 | { |
|
|
3920 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
3921 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
3922 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
3923 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
3924 | |
|
|
3925 | if (w->wd >= 0) |
|
|
3926 | { |
|
|
3927 | struct statfs sfs; |
|
|
3928 | |
|
|
3929 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3930 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3931 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3932 | |
|
|
3933 | if (!fs_2625) |
|
|
3934 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3935 | else if (!statfs (w->path, &sfs) |
|
|
3936 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3937 | || sfs.f_type == 0x4006 /* fat */ |
|
|
3938 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
3939 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3940 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
3941 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
3942 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
3943 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3944 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
3945 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
3946 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
3947 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
3948 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
3949 | else |
|
|
3950 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
3951 | } |
|
|
3952 | else |
|
|
3953 | { |
|
|
3954 | /* can't use inotify, continue to stat */ |
|
|
3955 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3956 | |
|
|
3957 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
3958 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
3959 | /* but an efficiency issue only */ |
|
|
3960 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
3961 | { |
|
|
3962 | char path [4096]; |
|
|
3963 | strcpy (path, w->path); |
|
|
3964 | |
|
|
3965 | do |
|
|
3966 | { |
|
|
3967 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
3968 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
3969 | |
|
|
3970 | char *pend = strrchr (path, '/'); |
|
|
3971 | |
|
|
3972 | if (!pend || pend == path) |
|
|
3973 | break; |
|
|
3974 | |
|
|
3975 | *pend = 0; |
|
|
3976 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
3977 | } |
|
|
3978 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
3979 | } |
|
|
3980 | } |
|
|
3981 | |
|
|
3982 | if (w->wd >= 0) |
|
|
3983 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3984 | |
|
|
3985 | /* now re-arm timer, if required */ |
|
|
3986 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3987 | ev_timer_again (EV_A_ &w->timer); |
|
|
3988 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3989 | } |
|
|
3990 | |
|
|
3991 | static void noinline |
|
|
3992 | infy_del (EV_P_ ev_stat *w) |
|
|
3993 | { |
|
|
3994 | int slot; |
|
|
3995 | int wd = w->wd; |
|
|
3996 | |
|
|
3997 | if (wd < 0) |
|
|
3998 | return; |
|
|
3999 | |
|
|
4000 | w->wd = -2; |
|
|
4001 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
4002 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
4003 | |
|
|
4004 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
4005 | inotify_rm_watch (fs_fd, wd); |
|
|
4006 | } |
|
|
4007 | |
|
|
4008 | static void noinline |
|
|
4009 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
4010 | { |
|
|
4011 | if (slot < 0) |
|
|
4012 | /* overflow, need to check for all hash slots */ |
|
|
4013 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4014 | infy_wd (EV_A_ slot, wd, ev); |
|
|
4015 | else |
|
|
4016 | { |
|
|
4017 | WL w_; |
|
|
4018 | |
|
|
4019 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
4020 | { |
|
|
4021 | ev_stat *w = (ev_stat *)w_; |
|
|
4022 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
4023 | |
|
|
4024 | if (w->wd == wd || wd == -1) |
|
|
4025 | { |
|
|
4026 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
4027 | { |
|
|
4028 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4029 | w->wd = -1; |
|
|
4030 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4031 | } |
|
|
4032 | |
|
|
4033 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
4034 | } |
|
|
4035 | } |
|
|
4036 | } |
|
|
4037 | } |
|
|
4038 | |
|
|
4039 | static void |
|
|
4040 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
4041 | { |
|
|
4042 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
4043 | int ofs; |
|
|
4044 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
4045 | |
|
|
4046 | for (ofs = 0; ofs < len; ) |
|
|
4047 | { |
|
|
4048 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
4049 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4050 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4051 | } |
|
|
4052 | } |
|
|
4053 | |
|
|
4054 | inline_size void ecb_cold |
|
|
4055 | ev_check_2625 (EV_P) |
|
|
4056 | { |
|
|
4057 | /* kernels < 2.6.25 are borked |
|
|
4058 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4059 | */ |
|
|
4060 | if (ev_linux_version () < 0x020619) |
|
|
4061 | return; |
|
|
4062 | |
|
|
4063 | fs_2625 = 1; |
|
|
4064 | } |
|
|
4065 | |
|
|
4066 | inline_size int |
|
|
4067 | infy_newfd (void) |
|
|
4068 | { |
|
|
4069 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4070 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4071 | if (fd >= 0) |
|
|
4072 | return fd; |
|
|
4073 | #endif |
|
|
4074 | return inotify_init (); |
|
|
4075 | } |
|
|
4076 | |
|
|
4077 | inline_size void |
|
|
4078 | infy_init (EV_P) |
|
|
4079 | { |
|
|
4080 | if (fs_fd != -2) |
|
|
4081 | return; |
|
|
4082 | |
|
|
4083 | fs_fd = -1; |
|
|
4084 | |
|
|
4085 | ev_check_2625 (EV_A); |
|
|
4086 | |
|
|
4087 | fs_fd = infy_newfd (); |
|
|
4088 | |
|
|
4089 | if (fs_fd >= 0) |
|
|
4090 | { |
|
|
4091 | fd_intern (fs_fd); |
|
|
4092 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
4093 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
4094 | ev_io_start (EV_A_ &fs_w); |
|
|
4095 | ev_unref (EV_A); |
|
|
4096 | } |
|
|
4097 | } |
|
|
4098 | |
|
|
4099 | inline_size void |
|
|
4100 | infy_fork (EV_P) |
|
|
4101 | { |
|
|
4102 | int slot; |
|
|
4103 | |
|
|
4104 | if (fs_fd < 0) |
|
|
4105 | return; |
|
|
4106 | |
|
|
4107 | ev_ref (EV_A); |
|
|
4108 | ev_io_stop (EV_A_ &fs_w); |
|
|
4109 | close (fs_fd); |
|
|
4110 | fs_fd = infy_newfd (); |
|
|
4111 | |
|
|
4112 | if (fs_fd >= 0) |
|
|
4113 | { |
|
|
4114 | fd_intern (fs_fd); |
|
|
4115 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4116 | ev_io_start (EV_A_ &fs_w); |
|
|
4117 | ev_unref (EV_A); |
|
|
4118 | } |
|
|
4119 | |
|
|
4120 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4121 | { |
|
|
4122 | WL w_ = fs_hash [slot].head; |
|
|
4123 | fs_hash [slot].head = 0; |
|
|
4124 | |
|
|
4125 | while (w_) |
|
|
4126 | { |
|
|
4127 | ev_stat *w = (ev_stat *)w_; |
|
|
4128 | w_ = w_->next; /* lets us add this watcher */ |
|
|
4129 | |
|
|
4130 | w->wd = -1; |
|
|
4131 | |
|
|
4132 | if (fs_fd >= 0) |
|
|
4133 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4134 | else |
|
|
4135 | { |
|
|
4136 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4137 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4138 | ev_timer_again (EV_A_ &w->timer); |
|
|
4139 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4140 | } |
|
|
4141 | } |
|
|
4142 | } |
|
|
4143 | } |
|
|
4144 | |
|
|
4145 | #endif |
|
|
4146 | |
|
|
4147 | #ifdef _WIN32 |
|
|
4148 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4149 | #else |
|
|
4150 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
4151 | #endif |
1298 | |
4152 | |
1299 | void |
4153 | void |
1300 | ev_child_start (EV_P_ struct ev_child *w) |
4154 | ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
1301 | { |
4155 | { |
1302 | #if EV_MULTIPLICITY |
4156 | if (lstat (w->path, &w->attr) < 0) |
1303 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
4157 | w->attr.st_nlink = 0; |
1304 | #endif |
4158 | else if (!w->attr.st_nlink) |
|
|
4159 | w->attr.st_nlink = 1; |
|
|
4160 | } |
|
|
4161 | |
|
|
4162 | static void noinline |
|
|
4163 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
4164 | { |
|
|
4165 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
4166 | |
|
|
4167 | ev_statdata prev = w->attr; |
|
|
4168 | ev_stat_stat (EV_A_ w); |
|
|
4169 | |
|
|
4170 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
4171 | if ( |
|
|
4172 | prev.st_dev != w->attr.st_dev |
|
|
4173 | || prev.st_ino != w->attr.st_ino |
|
|
4174 | || prev.st_mode != w->attr.st_mode |
|
|
4175 | || prev.st_nlink != w->attr.st_nlink |
|
|
4176 | || prev.st_uid != w->attr.st_uid |
|
|
4177 | || prev.st_gid != w->attr.st_gid |
|
|
4178 | || prev.st_rdev != w->attr.st_rdev |
|
|
4179 | || prev.st_size != w->attr.st_size |
|
|
4180 | || prev.st_atime != w->attr.st_atime |
|
|
4181 | || prev.st_mtime != w->attr.st_mtime |
|
|
4182 | || prev.st_ctime != w->attr.st_ctime |
|
|
4183 | ) { |
|
|
4184 | /* we only update w->prev on actual differences */ |
|
|
4185 | /* in case we test more often than invoke the callback, */ |
|
|
4186 | /* to ensure that prev is always different to attr */ |
|
|
4187 | w->prev = prev; |
|
|
4188 | |
|
|
4189 | #if EV_USE_INOTIFY |
|
|
4190 | if (fs_fd >= 0) |
|
|
4191 | { |
|
|
4192 | infy_del (EV_A_ w); |
|
|
4193 | infy_add (EV_A_ w); |
|
|
4194 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4195 | } |
|
|
4196 | #endif |
|
|
4197 | |
|
|
4198 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
4199 | } |
|
|
4200 | } |
|
|
4201 | |
|
|
4202 | void |
|
|
4203 | ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
|
|
4204 | { |
1305 | if (ev_is_active (w)) |
4205 | if (expect_false (ev_is_active (w))) |
1306 | return; |
4206 | return; |
1307 | |
4207 | |
|
|
4208 | ev_stat_stat (EV_A_ w); |
|
|
4209 | |
|
|
4210 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
4211 | w->interval = MIN_STAT_INTERVAL; |
|
|
4212 | |
|
|
4213 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
4214 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
4215 | |
|
|
4216 | #if EV_USE_INOTIFY |
|
|
4217 | infy_init (EV_A); |
|
|
4218 | |
|
|
4219 | if (fs_fd >= 0) |
|
|
4220 | infy_add (EV_A_ w); |
|
|
4221 | else |
|
|
4222 | #endif |
|
|
4223 | { |
|
|
4224 | ev_timer_again (EV_A_ &w->timer); |
|
|
4225 | ev_unref (EV_A); |
|
|
4226 | } |
|
|
4227 | |
1308 | ev_start (EV_A_ (W)w, 1); |
4228 | ev_start (EV_A_ (W)w, 1); |
1309 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
4229 | |
|
|
4230 | EV_FREQUENT_CHECK; |
1310 | } |
4231 | } |
1311 | |
4232 | |
1312 | void |
4233 | void |
1313 | ev_child_stop (EV_P_ struct ev_child *w) |
4234 | ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
1314 | { |
4235 | { |
1315 | ev_clear_pending (EV_A_ (W)w); |
4236 | clear_pending (EV_A_ (W)w); |
1316 | if (ev_is_active (w)) |
4237 | if (expect_false (!ev_is_active (w))) |
1317 | return; |
4238 | return; |
1318 | |
4239 | |
1319 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
4240 | EV_FREQUENT_CHECK; |
|
|
4241 | |
|
|
4242 | #if EV_USE_INOTIFY |
|
|
4243 | infy_del (EV_A_ w); |
|
|
4244 | #endif |
|
|
4245 | |
|
|
4246 | if (ev_is_active (&w->timer)) |
|
|
4247 | { |
|
|
4248 | ev_ref (EV_A); |
|
|
4249 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4250 | } |
|
|
4251 | |
1320 | ev_stop (EV_A_ (W)w); |
4252 | ev_stop (EV_A_ (W)w); |
|
|
4253 | |
|
|
4254 | EV_FREQUENT_CHECK; |
1321 | } |
4255 | } |
|
|
4256 | #endif |
|
|
4257 | |
|
|
4258 | #if EV_IDLE_ENABLE |
|
|
4259 | void |
|
|
4260 | ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
|
|
4261 | { |
|
|
4262 | if (expect_false (ev_is_active (w))) |
|
|
4263 | return; |
|
|
4264 | |
|
|
4265 | pri_adjust (EV_A_ (W)w); |
|
|
4266 | |
|
|
4267 | EV_FREQUENT_CHECK; |
|
|
4268 | |
|
|
4269 | { |
|
|
4270 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
4271 | |
|
|
4272 | ++idleall; |
|
|
4273 | ev_start (EV_A_ (W)w, active); |
|
|
4274 | |
|
|
4275 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
4276 | idles [ABSPRI (w)][active - 1] = w; |
|
|
4277 | } |
|
|
4278 | |
|
|
4279 | EV_FREQUENT_CHECK; |
|
|
4280 | } |
|
|
4281 | |
|
|
4282 | void |
|
|
4283 | ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
|
|
4284 | { |
|
|
4285 | clear_pending (EV_A_ (W)w); |
|
|
4286 | if (expect_false (!ev_is_active (w))) |
|
|
4287 | return; |
|
|
4288 | |
|
|
4289 | EV_FREQUENT_CHECK; |
|
|
4290 | |
|
|
4291 | { |
|
|
4292 | int active = ev_active (w); |
|
|
4293 | |
|
|
4294 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
4295 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
4296 | |
|
|
4297 | ev_stop (EV_A_ (W)w); |
|
|
4298 | --idleall; |
|
|
4299 | } |
|
|
4300 | |
|
|
4301 | EV_FREQUENT_CHECK; |
|
|
4302 | } |
|
|
4303 | #endif |
|
|
4304 | |
|
|
4305 | #if EV_PREPARE_ENABLE |
|
|
4306 | void |
|
|
4307 | ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
|
|
4308 | { |
|
|
4309 | if (expect_false (ev_is_active (w))) |
|
|
4310 | return; |
|
|
4311 | |
|
|
4312 | EV_FREQUENT_CHECK; |
|
|
4313 | |
|
|
4314 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
4315 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
4316 | prepares [preparecnt - 1] = w; |
|
|
4317 | |
|
|
4318 | EV_FREQUENT_CHECK; |
|
|
4319 | } |
|
|
4320 | |
|
|
4321 | void |
|
|
4322 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
|
|
4323 | { |
|
|
4324 | clear_pending (EV_A_ (W)w); |
|
|
4325 | if (expect_false (!ev_is_active (w))) |
|
|
4326 | return; |
|
|
4327 | |
|
|
4328 | EV_FREQUENT_CHECK; |
|
|
4329 | |
|
|
4330 | { |
|
|
4331 | int active = ev_active (w); |
|
|
4332 | |
|
|
4333 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
4334 | ev_active (prepares [active - 1]) = active; |
|
|
4335 | } |
|
|
4336 | |
|
|
4337 | ev_stop (EV_A_ (W)w); |
|
|
4338 | |
|
|
4339 | EV_FREQUENT_CHECK; |
|
|
4340 | } |
|
|
4341 | #endif |
|
|
4342 | |
|
|
4343 | #if EV_CHECK_ENABLE |
|
|
4344 | void |
|
|
4345 | ev_check_start (EV_P_ ev_check *w) EV_THROW |
|
|
4346 | { |
|
|
4347 | if (expect_false (ev_is_active (w))) |
|
|
4348 | return; |
|
|
4349 | |
|
|
4350 | EV_FREQUENT_CHECK; |
|
|
4351 | |
|
|
4352 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
4353 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
4354 | checks [checkcnt - 1] = w; |
|
|
4355 | |
|
|
4356 | EV_FREQUENT_CHECK; |
|
|
4357 | } |
|
|
4358 | |
|
|
4359 | void |
|
|
4360 | ev_check_stop (EV_P_ ev_check *w) EV_THROW |
|
|
4361 | { |
|
|
4362 | clear_pending (EV_A_ (W)w); |
|
|
4363 | if (expect_false (!ev_is_active (w))) |
|
|
4364 | return; |
|
|
4365 | |
|
|
4366 | EV_FREQUENT_CHECK; |
|
|
4367 | |
|
|
4368 | { |
|
|
4369 | int active = ev_active (w); |
|
|
4370 | |
|
|
4371 | checks [active - 1] = checks [--checkcnt]; |
|
|
4372 | ev_active (checks [active - 1]) = active; |
|
|
4373 | } |
|
|
4374 | |
|
|
4375 | ev_stop (EV_A_ (W)w); |
|
|
4376 | |
|
|
4377 | EV_FREQUENT_CHECK; |
|
|
4378 | } |
|
|
4379 | #endif |
|
|
4380 | |
|
|
4381 | #if EV_EMBED_ENABLE |
|
|
4382 | void noinline |
|
|
4383 | ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
|
|
4384 | { |
|
|
4385 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4386 | } |
|
|
4387 | |
|
|
4388 | static void |
|
|
4389 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
4390 | { |
|
|
4391 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
4392 | |
|
|
4393 | if (ev_cb (w)) |
|
|
4394 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
4395 | else |
|
|
4396 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4397 | } |
|
|
4398 | |
|
|
4399 | static void |
|
|
4400 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4401 | { |
|
|
4402 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4403 | |
|
|
4404 | { |
|
|
4405 | EV_P = w->other; |
|
|
4406 | |
|
|
4407 | while (fdchangecnt) |
|
|
4408 | { |
|
|
4409 | fd_reify (EV_A); |
|
|
4410 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4411 | } |
|
|
4412 | } |
|
|
4413 | } |
|
|
4414 | |
|
|
4415 | static void |
|
|
4416 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
4417 | { |
|
|
4418 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
4419 | |
|
|
4420 | ev_embed_stop (EV_A_ w); |
|
|
4421 | |
|
|
4422 | { |
|
|
4423 | EV_P = w->other; |
|
|
4424 | |
|
|
4425 | ev_loop_fork (EV_A); |
|
|
4426 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4427 | } |
|
|
4428 | |
|
|
4429 | ev_embed_start (EV_A_ w); |
|
|
4430 | } |
|
|
4431 | |
|
|
4432 | #if 0 |
|
|
4433 | static void |
|
|
4434 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4435 | { |
|
|
4436 | ev_idle_stop (EV_A_ idle); |
|
|
4437 | } |
|
|
4438 | #endif |
|
|
4439 | |
|
|
4440 | void |
|
|
4441 | ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
|
|
4442 | { |
|
|
4443 | if (expect_false (ev_is_active (w))) |
|
|
4444 | return; |
|
|
4445 | |
|
|
4446 | { |
|
|
4447 | EV_P = w->other; |
|
|
4448 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
4449 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
4450 | } |
|
|
4451 | |
|
|
4452 | EV_FREQUENT_CHECK; |
|
|
4453 | |
|
|
4454 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
4455 | ev_io_start (EV_A_ &w->io); |
|
|
4456 | |
|
|
4457 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4458 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4459 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4460 | |
|
|
4461 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4462 | ev_fork_start (EV_A_ &w->fork); |
|
|
4463 | |
|
|
4464 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4465 | |
|
|
4466 | ev_start (EV_A_ (W)w, 1); |
|
|
4467 | |
|
|
4468 | EV_FREQUENT_CHECK; |
|
|
4469 | } |
|
|
4470 | |
|
|
4471 | void |
|
|
4472 | ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
|
|
4473 | { |
|
|
4474 | clear_pending (EV_A_ (W)w); |
|
|
4475 | if (expect_false (!ev_is_active (w))) |
|
|
4476 | return; |
|
|
4477 | |
|
|
4478 | EV_FREQUENT_CHECK; |
|
|
4479 | |
|
|
4480 | ev_io_stop (EV_A_ &w->io); |
|
|
4481 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4482 | ev_fork_stop (EV_A_ &w->fork); |
|
|
4483 | |
|
|
4484 | ev_stop (EV_A_ (W)w); |
|
|
4485 | |
|
|
4486 | EV_FREQUENT_CHECK; |
|
|
4487 | } |
|
|
4488 | #endif |
|
|
4489 | |
|
|
4490 | #if EV_FORK_ENABLE |
|
|
4491 | void |
|
|
4492 | ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
|
|
4493 | { |
|
|
4494 | if (expect_false (ev_is_active (w))) |
|
|
4495 | return; |
|
|
4496 | |
|
|
4497 | EV_FREQUENT_CHECK; |
|
|
4498 | |
|
|
4499 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
4500 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
4501 | forks [forkcnt - 1] = w; |
|
|
4502 | |
|
|
4503 | EV_FREQUENT_CHECK; |
|
|
4504 | } |
|
|
4505 | |
|
|
4506 | void |
|
|
4507 | ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
|
|
4508 | { |
|
|
4509 | clear_pending (EV_A_ (W)w); |
|
|
4510 | if (expect_false (!ev_is_active (w))) |
|
|
4511 | return; |
|
|
4512 | |
|
|
4513 | EV_FREQUENT_CHECK; |
|
|
4514 | |
|
|
4515 | { |
|
|
4516 | int active = ev_active (w); |
|
|
4517 | |
|
|
4518 | forks [active - 1] = forks [--forkcnt]; |
|
|
4519 | ev_active (forks [active - 1]) = active; |
|
|
4520 | } |
|
|
4521 | |
|
|
4522 | ev_stop (EV_A_ (W)w); |
|
|
4523 | |
|
|
4524 | EV_FREQUENT_CHECK; |
|
|
4525 | } |
|
|
4526 | #endif |
|
|
4527 | |
|
|
4528 | #if EV_CLEANUP_ENABLE |
|
|
4529 | void |
|
|
4530 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4531 | { |
|
|
4532 | if (expect_false (ev_is_active (w))) |
|
|
4533 | return; |
|
|
4534 | |
|
|
4535 | EV_FREQUENT_CHECK; |
|
|
4536 | |
|
|
4537 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4538 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4539 | cleanups [cleanupcnt - 1] = w; |
|
|
4540 | |
|
|
4541 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4542 | ev_unref (EV_A); |
|
|
4543 | EV_FREQUENT_CHECK; |
|
|
4544 | } |
|
|
4545 | |
|
|
4546 | void |
|
|
4547 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4548 | { |
|
|
4549 | clear_pending (EV_A_ (W)w); |
|
|
4550 | if (expect_false (!ev_is_active (w))) |
|
|
4551 | return; |
|
|
4552 | |
|
|
4553 | EV_FREQUENT_CHECK; |
|
|
4554 | ev_ref (EV_A); |
|
|
4555 | |
|
|
4556 | { |
|
|
4557 | int active = ev_active (w); |
|
|
4558 | |
|
|
4559 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4560 | ev_active (cleanups [active - 1]) = active; |
|
|
4561 | } |
|
|
4562 | |
|
|
4563 | ev_stop (EV_A_ (W)w); |
|
|
4564 | |
|
|
4565 | EV_FREQUENT_CHECK; |
|
|
4566 | } |
|
|
4567 | #endif |
|
|
4568 | |
|
|
4569 | #if EV_ASYNC_ENABLE |
|
|
4570 | void |
|
|
4571 | ev_async_start (EV_P_ ev_async *w) EV_THROW |
|
|
4572 | { |
|
|
4573 | if (expect_false (ev_is_active (w))) |
|
|
4574 | return; |
|
|
4575 | |
|
|
4576 | w->sent = 0; |
|
|
4577 | |
|
|
4578 | evpipe_init (EV_A); |
|
|
4579 | |
|
|
4580 | EV_FREQUENT_CHECK; |
|
|
4581 | |
|
|
4582 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4583 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4584 | asyncs [asynccnt - 1] = w; |
|
|
4585 | |
|
|
4586 | EV_FREQUENT_CHECK; |
|
|
4587 | } |
|
|
4588 | |
|
|
4589 | void |
|
|
4590 | ev_async_stop (EV_P_ ev_async *w) EV_THROW |
|
|
4591 | { |
|
|
4592 | clear_pending (EV_A_ (W)w); |
|
|
4593 | if (expect_false (!ev_is_active (w))) |
|
|
4594 | return; |
|
|
4595 | |
|
|
4596 | EV_FREQUENT_CHECK; |
|
|
4597 | |
|
|
4598 | { |
|
|
4599 | int active = ev_active (w); |
|
|
4600 | |
|
|
4601 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4602 | ev_active (asyncs [active - 1]) = active; |
|
|
4603 | } |
|
|
4604 | |
|
|
4605 | ev_stop (EV_A_ (W)w); |
|
|
4606 | |
|
|
4607 | EV_FREQUENT_CHECK; |
|
|
4608 | } |
|
|
4609 | |
|
|
4610 | void |
|
|
4611 | ev_async_send (EV_P_ ev_async *w) EV_THROW |
|
|
4612 | { |
|
|
4613 | w->sent = 1; |
|
|
4614 | evpipe_write (EV_A_ &async_pending); |
|
|
4615 | } |
|
|
4616 | #endif |
1322 | |
4617 | |
1323 | /*****************************************************************************/ |
4618 | /*****************************************************************************/ |
1324 | |
4619 | |
1325 | struct ev_once |
4620 | struct ev_once |
1326 | { |
4621 | { |
1327 | struct ev_io io; |
4622 | ev_io io; |
1328 | struct ev_timer to; |
4623 | ev_timer to; |
1329 | void (*cb)(int revents, void *arg); |
4624 | void (*cb)(int revents, void *arg); |
1330 | void *arg; |
4625 | void *arg; |
1331 | }; |
4626 | }; |
1332 | |
4627 | |
1333 | static void |
4628 | static void |
1334 | once_cb (EV_P_ struct ev_once *once, int revents) |
4629 | once_cb (EV_P_ struct ev_once *once, int revents) |
1335 | { |
4630 | { |
1336 | void (*cb)(int revents, void *arg) = once->cb; |
4631 | void (*cb)(int revents, void *arg) = once->cb; |
1337 | void *arg = once->arg; |
4632 | void *arg = once->arg; |
1338 | |
4633 | |
1339 | ev_io_stop (EV_A_ &once->io); |
4634 | ev_io_stop (EV_A_ &once->io); |
1340 | ev_timer_stop (EV_A_ &once->to); |
4635 | ev_timer_stop (EV_A_ &once->to); |
1341 | free (once); |
4636 | ev_free (once); |
1342 | |
4637 | |
1343 | cb (revents, arg); |
4638 | cb (revents, arg); |
1344 | } |
4639 | } |
1345 | |
4640 | |
1346 | static void |
4641 | static void |
1347 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
4642 | once_cb_io (EV_P_ ev_io *w, int revents) |
1348 | { |
4643 | { |
1349 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
4644 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4645 | |
|
|
4646 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1350 | } |
4647 | } |
1351 | |
4648 | |
1352 | static void |
4649 | static void |
1353 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
4650 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1354 | { |
4651 | { |
1355 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
4652 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4653 | |
|
|
4654 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1356 | } |
4655 | } |
1357 | |
4656 | |
1358 | void |
4657 | void |
1359 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
4658 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
1360 | { |
4659 | { |
1361 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
4660 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1362 | |
4661 | |
1363 | if (!once) |
4662 | if (expect_false (!once)) |
|
|
4663 | { |
1364 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4664 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1365 | else |
4665 | return; |
1366 | { |
4666 | } |
|
|
4667 | |
1367 | once->cb = cb; |
4668 | once->cb = cb; |
1368 | once->arg = arg; |
4669 | once->arg = arg; |
1369 | |
4670 | |
1370 | ev_watcher_init (&once->io, once_cb_io); |
4671 | ev_init (&once->io, once_cb_io); |
1371 | if (fd >= 0) |
4672 | if (fd >= 0) |
|
|
4673 | { |
|
|
4674 | ev_io_set (&once->io, fd, events); |
|
|
4675 | ev_io_start (EV_A_ &once->io); |
|
|
4676 | } |
|
|
4677 | |
|
|
4678 | ev_init (&once->to, once_cb_to); |
|
|
4679 | if (timeout >= 0.) |
|
|
4680 | { |
|
|
4681 | ev_timer_set (&once->to, timeout, 0.); |
|
|
4682 | ev_timer_start (EV_A_ &once->to); |
|
|
4683 | } |
|
|
4684 | } |
|
|
4685 | |
|
|
4686 | /*****************************************************************************/ |
|
|
4687 | |
|
|
4688 | #if EV_WALK_ENABLE |
|
|
4689 | void ecb_cold |
|
|
4690 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
|
|
4691 | { |
|
|
4692 | int i, j; |
|
|
4693 | ev_watcher_list *wl, *wn; |
|
|
4694 | |
|
|
4695 | if (types & (EV_IO | EV_EMBED)) |
|
|
4696 | for (i = 0; i < anfdmax; ++i) |
|
|
4697 | for (wl = anfds [i].head; wl; ) |
1372 | { |
4698 | { |
1373 | ev_io_set (&once->io, fd, events); |
4699 | wn = wl->next; |
1374 | ev_io_start (EV_A_ &once->io); |
4700 | |
|
|
4701 | #if EV_EMBED_ENABLE |
|
|
4702 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
4703 | { |
|
|
4704 | if (types & EV_EMBED) |
|
|
4705 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
4706 | } |
|
|
4707 | else |
|
|
4708 | #endif |
|
|
4709 | #if EV_USE_INOTIFY |
|
|
4710 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
4711 | ; |
|
|
4712 | else |
|
|
4713 | #endif |
|
|
4714 | if ((ev_io *)wl != &pipe_w) |
|
|
4715 | if (types & EV_IO) |
|
|
4716 | cb (EV_A_ EV_IO, wl); |
|
|
4717 | |
|
|
4718 | wl = wn; |
1375 | } |
4719 | } |
1376 | |
4720 | |
1377 | ev_watcher_init (&once->to, once_cb_to); |
4721 | if (types & (EV_TIMER | EV_STAT)) |
1378 | if (timeout >= 0.) |
4722 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
4723 | #if EV_STAT_ENABLE |
|
|
4724 | /*TODO: timer is not always active*/ |
|
|
4725 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1379 | { |
4726 | { |
1380 | ev_timer_set (&once->to, timeout, 0.); |
4727 | if (types & EV_STAT) |
1381 | ev_timer_start (EV_A_ &once->to); |
4728 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1382 | } |
4729 | } |
1383 | } |
4730 | else |
1384 | } |
4731 | #endif |
|
|
4732 | if (types & EV_TIMER) |
|
|
4733 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1385 | |
4734 | |
|
|
4735 | #if EV_PERIODIC_ENABLE |
|
|
4736 | if (types & EV_PERIODIC) |
|
|
4737 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
4738 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
4739 | #endif |
|
|
4740 | |
|
|
4741 | #if EV_IDLE_ENABLE |
|
|
4742 | if (types & EV_IDLE) |
|
|
4743 | for (j = NUMPRI; j--; ) |
|
|
4744 | for (i = idlecnt [j]; i--; ) |
|
|
4745 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
4746 | #endif |
|
|
4747 | |
|
|
4748 | #if EV_FORK_ENABLE |
|
|
4749 | if (types & EV_FORK) |
|
|
4750 | for (i = forkcnt; i--; ) |
|
|
4751 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
4752 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
4753 | #endif |
|
|
4754 | |
|
|
4755 | #if EV_ASYNC_ENABLE |
|
|
4756 | if (types & EV_ASYNC) |
|
|
4757 | for (i = asynccnt; i--; ) |
|
|
4758 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
4759 | #endif |
|
|
4760 | |
|
|
4761 | #if EV_PREPARE_ENABLE |
|
|
4762 | if (types & EV_PREPARE) |
|
|
4763 | for (i = preparecnt; i--; ) |
|
|
4764 | # if EV_EMBED_ENABLE |
|
|
4765 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
4766 | # endif |
|
|
4767 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
4768 | #endif |
|
|
4769 | |
|
|
4770 | #if EV_CHECK_ENABLE |
|
|
4771 | if (types & EV_CHECK) |
|
|
4772 | for (i = checkcnt; i--; ) |
|
|
4773 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
4774 | #endif |
|
|
4775 | |
|
|
4776 | #if EV_SIGNAL_ENABLE |
|
|
4777 | if (types & EV_SIGNAL) |
|
|
4778 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
4779 | for (wl = signals [i].head; wl; ) |
|
|
4780 | { |
|
|
4781 | wn = wl->next; |
|
|
4782 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
4783 | wl = wn; |
|
|
4784 | } |
|
|
4785 | #endif |
|
|
4786 | |
|
|
4787 | #if EV_CHILD_ENABLE |
|
|
4788 | if (types & EV_CHILD) |
|
|
4789 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
4790 | for (wl = childs [i]; wl; ) |
|
|
4791 | { |
|
|
4792 | wn = wl->next; |
|
|
4793 | cb (EV_A_ EV_CHILD, wl); |
|
|
4794 | wl = wn; |
|
|
4795 | } |
|
|
4796 | #endif |
|
|
4797 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
4798 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
4799 | } |
|
|
4800 | #endif |
|
|
4801 | |
|
|
4802 | #if EV_MULTIPLICITY |
|
|
4803 | #include "ev_wrap.h" |
|
|
4804 | #endif |
|
|
4805 | |