|
|
1 | /* |
|
|
2 | * libev event processing core, watcher management |
|
|
3 | * |
|
|
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
|
|
5 | * All rights reserved. |
|
|
6 | * |
|
|
7 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
8 | * tion, are permitted provided that the following conditions are met: |
|
|
9 | * |
|
|
10 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
11 | * this list of conditions and the following disclaimer. |
|
|
12 | * |
|
|
13 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
14 | * notice, this list of conditions and the following disclaimer in the |
|
|
15 | * documentation and/or other materials provided with the distribution. |
|
|
16 | * |
|
|
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
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. |
|
|
38 | */ |
|
|
39 | |
|
|
40 | #ifdef __cplusplus |
|
|
41 | extern "C" { |
|
|
42 | #endif |
|
|
43 | |
|
|
44 | /* this big block deduces configuration from config.h */ |
|
|
45 | #ifndef EV_STANDALONE |
|
|
46 | # ifdef EV_CONFIG_H |
|
|
47 | # include EV_CONFIG_H |
|
|
48 | # else |
|
|
49 | # include "config.h" |
|
|
50 | # endif |
|
|
51 | |
|
|
52 | # if HAVE_CLOCK_GETTIME |
|
|
53 | # ifndef EV_USE_MONOTONIC |
|
|
54 | # define EV_USE_MONOTONIC 1 |
|
|
55 | # endif |
|
|
56 | # ifndef EV_USE_REALTIME |
|
|
57 | # define EV_USE_REALTIME 1 |
|
|
58 | # endif |
|
|
59 | # else |
|
|
60 | # ifndef EV_USE_MONOTONIC |
|
|
61 | # define EV_USE_MONOTONIC 0 |
|
|
62 | # endif |
|
|
63 | # ifndef EV_USE_REALTIME |
|
|
64 | # define EV_USE_REALTIME 0 |
|
|
65 | # endif |
|
|
66 | # endif |
|
|
67 | |
|
|
68 | # ifndef EV_USE_NANOSLEEP |
|
|
69 | # if HAVE_NANOSLEEP |
|
|
70 | # define EV_USE_NANOSLEEP 1 |
|
|
71 | # else |
|
|
72 | # define EV_USE_NANOSLEEP 0 |
|
|
73 | # endif |
|
|
74 | # endif |
|
|
75 | |
|
|
76 | # ifndef EV_USE_SELECT |
|
|
77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
78 | # define EV_USE_SELECT 1 |
|
|
79 | # else |
|
|
80 | # define EV_USE_SELECT 0 |
|
|
81 | # endif |
|
|
82 | # endif |
|
|
83 | |
|
|
84 | # ifndef EV_USE_POLL |
|
|
85 | # if HAVE_POLL && HAVE_POLL_H |
|
|
86 | # define EV_USE_POLL 1 |
|
|
87 | # else |
|
|
88 | # define EV_USE_POLL 0 |
|
|
89 | # endif |
|
|
90 | # endif |
|
|
91 | |
|
|
92 | # ifndef EV_USE_EPOLL |
|
|
93 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
94 | # define EV_USE_EPOLL 1 |
|
|
95 | # else |
|
|
96 | # define EV_USE_EPOLL 0 |
|
|
97 | # endif |
|
|
98 | # endif |
|
|
99 | |
|
|
100 | # ifndef EV_USE_KQUEUE |
|
|
101 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
|
|
102 | # define EV_USE_KQUEUE 1 |
|
|
103 | # else |
|
|
104 | # define EV_USE_KQUEUE 0 |
|
|
105 | # endif |
|
|
106 | # endif |
|
|
107 | |
|
|
108 | # ifndef EV_USE_PORT |
|
|
109 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
110 | # define EV_USE_PORT 1 |
|
|
111 | # else |
|
|
112 | # define EV_USE_PORT 0 |
|
|
113 | # endif |
|
|
114 | # endif |
|
|
115 | |
|
|
116 | # ifndef EV_USE_INOTIFY |
|
|
117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
118 | # define EV_USE_INOTIFY 1 |
|
|
119 | # else |
|
|
120 | # define EV_USE_INOTIFY 0 |
|
|
121 | # endif |
|
|
122 | # endif |
|
|
123 | |
|
|
124 | # ifndef EV_USE_EVENTFD |
|
|
125 | # if HAVE_EVENTFD |
|
|
126 | # define EV_USE_EVENTFD 1 |
|
|
127 | # else |
|
|
128 | # define EV_USE_EVENTFD 0 |
|
|
129 | # endif |
|
|
130 | # endif |
|
|
131 | |
|
|
132 | #endif |
|
|
133 | |
1 | #include <math.h> |
134 | #include <math.h> |
2 | #include <stdlib.h> |
135 | #include <stdlib.h> |
3 | #include <unistd.h> |
|
|
4 | #include <fcntl.h> |
136 | #include <fcntl.h> |
5 | #include <signal.h> |
137 | #include <stddef.h> |
6 | |
138 | |
7 | #include <stdio.h> |
139 | #include <stdio.h> |
8 | |
140 | |
9 | #include <assert.h> |
141 | #include <assert.h> |
10 | #include <errno.h> |
142 | #include <errno.h> |
11 | #include <sys/time.h> |
143 | #include <sys/types.h> |
12 | #include <time.h> |
144 | #include <time.h> |
13 | |
145 | |
14 | #define HAVE_EPOLL 1 |
146 | #include <signal.h> |
15 | |
147 | |
16 | #ifndef HAVE_MONOTONIC |
148 | #ifdef EV_H |
17 | # ifdef CLOCK_MONOTONIC |
149 | # include EV_H |
18 | # define HAVE_MONOTONIC 1 |
150 | #else |
|
|
151 | # include "ev.h" |
|
|
152 | #endif |
|
|
153 | |
|
|
154 | #ifndef _WIN32 |
|
|
155 | # include <sys/time.h> |
|
|
156 | # include <sys/wait.h> |
|
|
157 | # include <unistd.h> |
|
|
158 | #else |
|
|
159 | # include <io.h> |
|
|
160 | # define WIN32_LEAN_AND_MEAN |
|
|
161 | # include <windows.h> |
|
|
162 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
163 | # define EV_SELECT_IS_WINSOCKET 1 |
19 | # endif |
164 | # endif |
20 | #endif |
165 | #endif |
21 | |
166 | |
22 | #ifndef HAVE_SELECT |
167 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
23 | # define HAVE_SELECT 1 |
168 | |
|
|
169 | #ifndef EV_USE_MONOTONIC |
|
|
170 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
|
|
171 | # define EV_USE_MONOTONIC 1 |
|
|
172 | # else |
|
|
173 | # define EV_USE_MONOTONIC 0 |
24 | #endif |
174 | # endif |
|
|
175 | #endif |
25 | |
176 | |
26 | #ifndef HAVE_EPOLL |
177 | #ifndef EV_USE_REALTIME |
27 | # define HAVE_EPOLL 0 |
178 | # define EV_USE_REALTIME 0 |
|
|
179 | #endif |
|
|
180 | |
|
|
181 | #ifndef EV_USE_NANOSLEEP |
|
|
182 | # if _POSIX_C_SOURCE >= 199309L |
|
|
183 | # define EV_USE_NANOSLEEP 1 |
|
|
184 | # else |
|
|
185 | # define EV_USE_NANOSLEEP 0 |
28 | #endif |
186 | # endif |
|
|
187 | #endif |
29 | |
188 | |
30 | #ifndef HAVE_REALTIME |
189 | #ifndef EV_USE_SELECT |
31 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
190 | # define EV_USE_SELECT 1 |
|
|
191 | #endif |
|
|
192 | |
|
|
193 | #ifndef EV_USE_POLL |
|
|
194 | # ifdef _WIN32 |
|
|
195 | # define EV_USE_POLL 0 |
|
|
196 | # else |
|
|
197 | # define EV_USE_POLL 1 |
32 | #endif |
198 | # endif |
|
|
199 | #endif |
|
|
200 | |
|
|
201 | #ifndef EV_USE_EPOLL |
|
|
202 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
203 | # define EV_USE_EPOLL 1 |
|
|
204 | # else |
|
|
205 | # define EV_USE_EPOLL 0 |
|
|
206 | # endif |
|
|
207 | #endif |
|
|
208 | |
|
|
209 | #ifndef EV_USE_KQUEUE |
|
|
210 | # define EV_USE_KQUEUE 0 |
|
|
211 | #endif |
|
|
212 | |
|
|
213 | #ifndef EV_USE_PORT |
|
|
214 | # define EV_USE_PORT 0 |
|
|
215 | #endif |
|
|
216 | |
|
|
217 | #ifndef EV_USE_INOTIFY |
|
|
218 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
219 | # define EV_USE_INOTIFY 1 |
|
|
220 | # else |
|
|
221 | # define EV_USE_INOTIFY 0 |
|
|
222 | # endif |
|
|
223 | #endif |
|
|
224 | |
|
|
225 | #ifndef EV_PID_HASHSIZE |
|
|
226 | # if EV_MINIMAL |
|
|
227 | # define EV_PID_HASHSIZE 1 |
|
|
228 | # else |
|
|
229 | # define EV_PID_HASHSIZE 16 |
|
|
230 | # endif |
|
|
231 | #endif |
|
|
232 | |
|
|
233 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
234 | # if EV_MINIMAL |
|
|
235 | # define EV_INOTIFY_HASHSIZE 1 |
|
|
236 | # else |
|
|
237 | # define EV_INOTIFY_HASHSIZE 16 |
|
|
238 | # endif |
|
|
239 | #endif |
|
|
240 | |
|
|
241 | #ifndef EV_USE_EVENTFD |
|
|
242 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
243 | # define EV_USE_EVENTFD 1 |
|
|
244 | # else |
|
|
245 | # define EV_USE_EVENTFD 0 |
|
|
246 | # endif |
|
|
247 | #endif |
|
|
248 | |
|
|
249 | #if 0 /* debugging */ |
|
|
250 | # define EV_VERIFY 3 |
|
|
251 | # define EV_USE_4HEAP 1 |
|
|
252 | # define EV_HEAP_CACHE_AT 1 |
|
|
253 | #endif |
|
|
254 | |
|
|
255 | #ifndef EV_VERIFY |
|
|
256 | # define EV_VERIFY !EV_MINIMAL |
|
|
257 | #endif |
|
|
258 | |
|
|
259 | #ifndef EV_USE_4HEAP |
|
|
260 | # define EV_USE_4HEAP !EV_MINIMAL |
|
|
261 | #endif |
|
|
262 | |
|
|
263 | #ifndef EV_HEAP_CACHE_AT |
|
|
264 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
|
|
265 | #endif |
|
|
266 | |
|
|
267 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
|
|
268 | |
|
|
269 | #ifndef CLOCK_MONOTONIC |
|
|
270 | # undef EV_USE_MONOTONIC |
|
|
271 | # define EV_USE_MONOTONIC 0 |
|
|
272 | #endif |
|
|
273 | |
|
|
274 | #ifndef CLOCK_REALTIME |
|
|
275 | # undef EV_USE_REALTIME |
|
|
276 | # define EV_USE_REALTIME 0 |
|
|
277 | #endif |
|
|
278 | |
|
|
279 | #if !EV_STAT_ENABLE |
|
|
280 | # undef EV_USE_INOTIFY |
|
|
281 | # define EV_USE_INOTIFY 0 |
|
|
282 | #endif |
|
|
283 | |
|
|
284 | #if !EV_USE_NANOSLEEP |
|
|
285 | # ifndef _WIN32 |
|
|
286 | # include <sys/select.h> |
|
|
287 | # endif |
|
|
288 | #endif |
|
|
289 | |
|
|
290 | #if EV_USE_INOTIFY |
|
|
291 | # include <sys/utsname.h> |
|
|
292 | # include <sys/statfs.h> |
|
|
293 | # include <sys/inotify.h> |
|
|
294 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
295 | # ifndef IN_DONT_FOLLOW |
|
|
296 | # undef EV_USE_INOTIFY |
|
|
297 | # define EV_USE_INOTIFY 0 |
|
|
298 | # endif |
|
|
299 | #endif |
|
|
300 | |
|
|
301 | #if EV_SELECT_IS_WINSOCKET |
|
|
302 | # include <winsock.h> |
|
|
303 | #endif |
|
|
304 | |
|
|
305 | #if EV_USE_EVENTFD |
|
|
306 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
307 | # include <stdint.h> |
|
|
308 | # ifdef __cplusplus |
|
|
309 | extern "C" { |
|
|
310 | # endif |
|
|
311 | int eventfd (unsigned int initval, int flags); |
|
|
312 | # ifdef __cplusplus |
|
|
313 | } |
|
|
314 | # endif |
|
|
315 | #endif |
|
|
316 | |
|
|
317 | /**/ |
|
|
318 | |
|
|
319 | #if EV_VERIFY >= 3 |
|
|
320 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
|
|
321 | #else |
|
|
322 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
323 | #endif |
|
|
324 | |
|
|
325 | /* |
|
|
326 | * This is used to avoid floating point rounding problems. |
|
|
327 | * It is added to ev_rt_now when scheduling periodics |
|
|
328 | * to ensure progress, time-wise, even when rounding |
|
|
329 | * errors are against us. |
|
|
330 | * This value is good at least till the year 4000. |
|
|
331 | * Better solutions welcome. |
|
|
332 | */ |
|
|
333 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
33 | |
334 | |
34 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
335 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 | #define MAX_BLOCKTIME 60. |
336 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
337 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
36 | |
338 | |
37 | #include "ev.h" |
339 | #if __GNUC__ >= 4 |
|
|
340 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
341 | # define noinline __attribute__ ((noinline)) |
|
|
342 | #else |
|
|
343 | # define expect(expr,value) (expr) |
|
|
344 | # define noinline |
|
|
345 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
346 | # define inline |
|
|
347 | # endif |
|
|
348 | #endif |
38 | |
349 | |
39 | struct ev_watcher { |
350 | #define expect_false(expr) expect ((expr) != 0, 0) |
40 | EV_WATCHER (ev_watcher); |
351 | #define expect_true(expr) expect ((expr) != 0, 1) |
41 | }; |
352 | #define inline_size static inline |
42 | |
353 | |
43 | struct ev_watcher_list { |
354 | #if EV_MINIMAL |
44 | EV_WATCHER_LIST (ev_watcher_list); |
355 | # define inline_speed static noinline |
45 | }; |
356 | #else |
|
|
357 | # define inline_speed static inline |
|
|
358 | #endif |
46 | |
359 | |
47 | struct ev_watcher_time { |
360 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
48 | EV_WATCHER_TIME (ev_watcher_time); |
361 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
49 | }; |
|
|
50 | |
362 | |
|
|
363 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
364 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
365 | |
51 | typedef struct ev_watcher *W; |
366 | typedef ev_watcher *W; |
52 | typedef struct ev_watcher_list *WL; |
367 | typedef ev_watcher_list *WL; |
53 | typedef struct ev_watcher_time *WT; |
368 | typedef ev_watcher_time *WT; |
54 | |
369 | |
55 | static ev_tstamp now, diff; /* monotonic clock */ |
370 | #define ev_active(w) ((W)(w))->active |
|
|
371 | #define ev_at(w) ((WT)(w))->at |
|
|
372 | |
|
|
373 | #if EV_USE_MONOTONIC |
|
|
374 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
375 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
376 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
377 | #endif |
|
|
378 | |
|
|
379 | #ifdef _WIN32 |
|
|
380 | # include "ev_win32.c" |
|
|
381 | #endif |
|
|
382 | |
|
|
383 | /*****************************************************************************/ |
|
|
384 | |
|
|
385 | static void (*syserr_cb)(const char *msg); |
|
|
386 | |
|
|
387 | void |
|
|
388 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
389 | { |
|
|
390 | syserr_cb = cb; |
|
|
391 | } |
|
|
392 | |
|
|
393 | static void noinline |
|
|
394 | ev_syserr (const char *msg) |
|
|
395 | { |
|
|
396 | if (!msg) |
|
|
397 | msg = "(libev) system error"; |
|
|
398 | |
|
|
399 | if (syserr_cb) |
|
|
400 | syserr_cb (msg); |
|
|
401 | else |
|
|
402 | { |
|
|
403 | perror (msg); |
|
|
404 | abort (); |
|
|
405 | } |
|
|
406 | } |
|
|
407 | |
|
|
408 | static void * |
|
|
409 | ev_realloc_emul (void *ptr, long size) |
|
|
410 | { |
|
|
411 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
412 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
413 | * the single unix specification, so work around them here. |
|
|
414 | */ |
|
|
415 | |
|
|
416 | if (size) |
|
|
417 | return realloc (ptr, size); |
|
|
418 | |
|
|
419 | free (ptr); |
|
|
420 | return 0; |
|
|
421 | } |
|
|
422 | |
|
|
423 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
424 | |
|
|
425 | void |
|
|
426 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
427 | { |
|
|
428 | alloc = cb; |
|
|
429 | } |
|
|
430 | |
|
|
431 | inline_speed void * |
|
|
432 | ev_realloc (void *ptr, long size) |
|
|
433 | { |
|
|
434 | ptr = alloc (ptr, size); |
|
|
435 | |
|
|
436 | if (!ptr && size) |
|
|
437 | { |
|
|
438 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
439 | abort (); |
|
|
440 | } |
|
|
441 | |
|
|
442 | return ptr; |
|
|
443 | } |
|
|
444 | |
|
|
445 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
446 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
447 | |
|
|
448 | /*****************************************************************************/ |
|
|
449 | |
|
|
450 | typedef struct |
|
|
451 | { |
|
|
452 | WL head; |
|
|
453 | unsigned char events; |
|
|
454 | unsigned char reify; |
|
|
455 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
456 | unsigned char unused; |
|
|
457 | #if EV_USE_EPOLL |
|
|
458 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
459 | #endif |
|
|
460 | #if EV_SELECT_IS_WINSOCKET |
|
|
461 | SOCKET handle; |
|
|
462 | #endif |
|
|
463 | } ANFD; |
|
|
464 | |
|
|
465 | typedef struct |
|
|
466 | { |
|
|
467 | W w; |
|
|
468 | int events; |
|
|
469 | } ANPENDING; |
|
|
470 | |
|
|
471 | #if EV_USE_INOTIFY |
|
|
472 | /* hash table entry per inotify-id */ |
|
|
473 | typedef struct |
|
|
474 | { |
|
|
475 | WL head; |
|
|
476 | } ANFS; |
|
|
477 | #endif |
|
|
478 | |
|
|
479 | /* Heap Entry */ |
|
|
480 | #if EV_HEAP_CACHE_AT |
|
|
481 | typedef struct { |
|
|
482 | ev_tstamp at; |
|
|
483 | WT w; |
|
|
484 | } ANHE; |
|
|
485 | |
|
|
486 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
487 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
488 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
489 | #else |
|
|
490 | typedef WT ANHE; |
|
|
491 | |
|
|
492 | #define ANHE_w(he) (he) |
|
|
493 | #define ANHE_at(he) (he)->at |
|
|
494 | #define ANHE_at_cache(he) |
|
|
495 | #endif |
|
|
496 | |
|
|
497 | #if EV_MULTIPLICITY |
|
|
498 | |
|
|
499 | struct ev_loop |
|
|
500 | { |
|
|
501 | ev_tstamp ev_rt_now; |
|
|
502 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
503 | #define VAR(name,decl) decl; |
|
|
504 | #include "ev_vars.h" |
|
|
505 | #undef VAR |
|
|
506 | }; |
|
|
507 | #include "ev_wrap.h" |
|
|
508 | |
|
|
509 | static struct ev_loop default_loop_struct; |
|
|
510 | struct ev_loop *ev_default_loop_ptr; |
|
|
511 | |
|
|
512 | #else |
|
|
513 | |
56 | ev_tstamp ev_now; |
514 | ev_tstamp ev_rt_now; |
57 | int ev_method; |
515 | #define VAR(name,decl) static decl; |
|
|
516 | #include "ev_vars.h" |
|
|
517 | #undef VAR |
58 | |
518 | |
59 | static int have_monotonic; /* runtime */ |
519 | static int ev_default_loop_ptr; |
60 | |
520 | |
61 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
521 | #endif |
62 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
63 | static void (*method_poll)(ev_tstamp timeout); |
|
|
64 | |
522 | |
65 | /*****************************************************************************/ |
523 | /*****************************************************************************/ |
66 | |
524 | |
67 | ev_tstamp |
525 | ev_tstamp |
68 | ev_time (void) |
526 | ev_time (void) |
69 | { |
527 | { |
70 | #if HAVE_REALTIME |
528 | #if EV_USE_REALTIME |
71 | struct timespec ts; |
529 | struct timespec ts; |
72 | clock_gettime (CLOCK_REALTIME, &ts); |
530 | clock_gettime (CLOCK_REALTIME, &ts); |
73 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
531 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
74 | #else |
532 | #else |
75 | struct timeval tv; |
533 | struct timeval tv; |
76 | gettimeofday (&tv, 0); |
534 | gettimeofday (&tv, 0); |
77 | return tv.tv_sec + tv.tv_usec * 1e-6; |
535 | return tv.tv_sec + tv.tv_usec * 1e-6; |
78 | #endif |
536 | #endif |
79 | } |
537 | } |
80 | |
538 | |
81 | static ev_tstamp |
539 | ev_tstamp inline_size |
82 | get_clock (void) |
540 | get_clock (void) |
83 | { |
541 | { |
84 | #if HAVE_MONOTONIC |
542 | #if EV_USE_MONOTONIC |
85 | if (have_monotonic) |
543 | if (expect_true (have_monotonic)) |
86 | { |
544 | { |
87 | struct timespec ts; |
545 | struct timespec ts; |
88 | clock_gettime (CLOCK_MONOTONIC, &ts); |
546 | clock_gettime (CLOCK_MONOTONIC, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
547 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 | } |
548 | } |
91 | #endif |
549 | #endif |
92 | |
550 | |
93 | return ev_time (); |
551 | return ev_time (); |
94 | } |
552 | } |
95 | |
553 | |
96 | #define array_needsize(base,cur,cnt,init) \ |
554 | #if EV_MULTIPLICITY |
97 | if ((cnt) > cur) \ |
555 | ev_tstamp |
98 | { \ |
556 | ev_now (EV_P) |
99 | int newcnt = cur ? cur << 1 : 16; \ |
557 | { |
100 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
558 | return ev_rt_now; |
101 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
559 | } |
102 | init (base + cur, newcnt - cur); \ |
560 | #endif |
103 | cur = newcnt; \ |
561 | |
|
|
562 | void |
|
|
563 | ev_sleep (ev_tstamp delay) |
|
|
564 | { |
|
|
565 | if (delay > 0.) |
104 | } |
566 | { |
|
|
567 | #if EV_USE_NANOSLEEP |
|
|
568 | struct timespec ts; |
|
|
569 | |
|
|
570 | ts.tv_sec = (time_t)delay; |
|
|
571 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
572 | |
|
|
573 | nanosleep (&ts, 0); |
|
|
574 | #elif defined(_WIN32) |
|
|
575 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
576 | #else |
|
|
577 | struct timeval tv; |
|
|
578 | |
|
|
579 | tv.tv_sec = (time_t)delay; |
|
|
580 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
581 | |
|
|
582 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
583 | /* somehting nto guaranteed by newer posix versions, but guaranteed */ |
|
|
584 | /* by older ones */ |
|
|
585 | select (0, 0, 0, 0, &tv); |
|
|
586 | #endif |
|
|
587 | } |
|
|
588 | } |
105 | |
589 | |
106 | /*****************************************************************************/ |
590 | /*****************************************************************************/ |
107 | |
591 | |
|
|
592 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
593 | |
|
|
594 | int inline_size |
|
|
595 | array_nextsize (int elem, int cur, int cnt) |
|
|
596 | { |
|
|
597 | int ncur = cur + 1; |
|
|
598 | |
|
|
599 | do |
|
|
600 | ncur <<= 1; |
|
|
601 | while (cnt > ncur); |
|
|
602 | |
|
|
603 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
604 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
605 | { |
|
|
606 | ncur *= elem; |
|
|
607 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
608 | ncur = ncur - sizeof (void *) * 4; |
|
|
609 | ncur /= elem; |
|
|
610 | } |
|
|
611 | |
|
|
612 | return ncur; |
|
|
613 | } |
|
|
614 | |
|
|
615 | static noinline void * |
|
|
616 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
617 | { |
|
|
618 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
619 | return ev_realloc (base, elem * *cur); |
|
|
620 | } |
|
|
621 | |
|
|
622 | #define array_init_zero(base,count) \ |
|
|
623 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
624 | |
|
|
625 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
626 | if (expect_false ((cnt) > (cur))) \ |
|
|
627 | { \ |
|
|
628 | int ocur_ = (cur); \ |
|
|
629 | (base) = (type *)array_realloc \ |
|
|
630 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
631 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
632 | } |
|
|
633 | |
|
|
634 | #if 0 |
|
|
635 | #define array_slim(type,stem) \ |
|
|
636 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
637 | { \ |
|
|
638 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
639 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
640 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
641 | } |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | #define array_free(stem, idx) \ |
|
|
645 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
646 | |
|
|
647 | /*****************************************************************************/ |
|
|
648 | |
|
|
649 | void noinline |
|
|
650 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
651 | { |
|
|
652 | W w_ = (W)w; |
|
|
653 | int pri = ABSPRI (w_); |
|
|
654 | |
|
|
655 | if (expect_false (w_->pending)) |
|
|
656 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
657 | else |
|
|
658 | { |
|
|
659 | w_->pending = ++pendingcnt [pri]; |
|
|
660 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
661 | pendings [pri][w_->pending - 1].w = w_; |
|
|
662 | pendings [pri][w_->pending - 1].events = revents; |
|
|
663 | } |
|
|
664 | } |
|
|
665 | |
|
|
666 | void inline_speed |
|
|
667 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
668 | { |
|
|
669 | int i; |
|
|
670 | |
|
|
671 | for (i = 0; i < eventcnt; ++i) |
|
|
672 | ev_feed_event (EV_A_ events [i], type); |
|
|
673 | } |
|
|
674 | |
|
|
675 | /*****************************************************************************/ |
|
|
676 | |
|
|
677 | void inline_speed |
|
|
678 | fd_event (EV_P_ int fd, int revents) |
|
|
679 | { |
|
|
680 | ANFD *anfd = anfds + fd; |
|
|
681 | ev_io *w; |
|
|
682 | |
|
|
683 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
684 | { |
|
|
685 | int ev = w->events & revents; |
|
|
686 | |
|
|
687 | if (ev) |
|
|
688 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
689 | } |
|
|
690 | } |
|
|
691 | |
|
|
692 | void |
|
|
693 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
694 | { |
|
|
695 | if (fd >= 0 && fd < anfdmax) |
|
|
696 | fd_event (EV_A_ fd, revents); |
|
|
697 | } |
|
|
698 | |
|
|
699 | void inline_size |
|
|
700 | fd_reify (EV_P) |
|
|
701 | { |
|
|
702 | int i; |
|
|
703 | |
|
|
704 | for (i = 0; i < fdchangecnt; ++i) |
|
|
705 | { |
|
|
706 | int fd = fdchanges [i]; |
|
|
707 | ANFD *anfd = anfds + fd; |
|
|
708 | ev_io *w; |
|
|
709 | |
|
|
710 | unsigned char events = 0; |
|
|
711 | |
|
|
712 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
713 | events |= (unsigned char)w->events; |
|
|
714 | |
|
|
715 | #if EV_SELECT_IS_WINSOCKET |
|
|
716 | if (events) |
|
|
717 | { |
|
|
718 | unsigned long arg; |
|
|
719 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
720 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
721 | #else |
|
|
722 | anfd->handle = _get_osfhandle (fd); |
|
|
723 | #endif |
|
|
724 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
725 | } |
|
|
726 | #endif |
|
|
727 | |
|
|
728 | { |
|
|
729 | unsigned char o_events = anfd->events; |
|
|
730 | unsigned char o_reify = anfd->reify; |
|
|
731 | |
|
|
732 | anfd->reify = 0; |
|
|
733 | anfd->events = events; |
|
|
734 | |
|
|
735 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
736 | backend_modify (EV_A_ fd, o_events, events); |
|
|
737 | } |
|
|
738 | } |
|
|
739 | |
|
|
740 | fdchangecnt = 0; |
|
|
741 | } |
|
|
742 | |
|
|
743 | void inline_size |
|
|
744 | fd_change (EV_P_ int fd, int flags) |
|
|
745 | { |
|
|
746 | unsigned char reify = anfds [fd].reify; |
|
|
747 | anfds [fd].reify |= flags; |
|
|
748 | |
|
|
749 | if (expect_true (!reify)) |
|
|
750 | { |
|
|
751 | ++fdchangecnt; |
|
|
752 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
753 | fdchanges [fdchangecnt - 1] = fd; |
|
|
754 | } |
|
|
755 | } |
|
|
756 | |
|
|
757 | void inline_speed |
|
|
758 | fd_kill (EV_P_ int fd) |
|
|
759 | { |
|
|
760 | ev_io *w; |
|
|
761 | |
|
|
762 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
763 | { |
|
|
764 | ev_io_stop (EV_A_ w); |
|
|
765 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
766 | } |
|
|
767 | } |
|
|
768 | |
|
|
769 | int inline_size |
|
|
770 | fd_valid (int fd) |
|
|
771 | { |
|
|
772 | #ifdef _WIN32 |
|
|
773 | return _get_osfhandle (fd) != -1; |
|
|
774 | #else |
|
|
775 | return fcntl (fd, F_GETFD) != -1; |
|
|
776 | #endif |
|
|
777 | } |
|
|
778 | |
|
|
779 | /* called on EBADF to verify fds */ |
|
|
780 | static void noinline |
|
|
781 | fd_ebadf (EV_P) |
|
|
782 | { |
|
|
783 | int fd; |
|
|
784 | |
|
|
785 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
786 | if (anfds [fd].events) |
|
|
787 | if (!fd_valid (fd) && errno == EBADF) |
|
|
788 | fd_kill (EV_A_ fd); |
|
|
789 | } |
|
|
790 | |
|
|
791 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
792 | static void noinline |
|
|
793 | fd_enomem (EV_P) |
|
|
794 | { |
|
|
795 | int fd; |
|
|
796 | |
|
|
797 | for (fd = anfdmax; fd--; ) |
|
|
798 | if (anfds [fd].events) |
|
|
799 | { |
|
|
800 | fd_kill (EV_A_ fd); |
|
|
801 | return; |
|
|
802 | } |
|
|
803 | } |
|
|
804 | |
|
|
805 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
806 | static void noinline |
|
|
807 | fd_rearm_all (EV_P) |
|
|
808 | { |
|
|
809 | int fd; |
|
|
810 | |
|
|
811 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
812 | if (anfds [fd].events) |
|
|
813 | { |
|
|
814 | anfds [fd].events = 0; |
|
|
815 | anfds [fd].emask = 0; |
|
|
816 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
817 | } |
|
|
818 | } |
|
|
819 | |
|
|
820 | /*****************************************************************************/ |
|
|
821 | |
|
|
822 | /* |
|
|
823 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
824 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
825 | * the branching factor of the d-tree. |
|
|
826 | */ |
|
|
827 | |
|
|
828 | /* |
|
|
829 | * at the moment we allow libev the luxury of two heaps, |
|
|
830 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
831 | * which is more cache-efficient. |
|
|
832 | * the difference is about 5% with 50000+ watchers. |
|
|
833 | */ |
|
|
834 | #if EV_USE_4HEAP |
|
|
835 | |
|
|
836 | #define DHEAP 4 |
|
|
837 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
838 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
839 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
840 | |
|
|
841 | /* away from the root */ |
|
|
842 | void inline_speed |
|
|
843 | downheap (ANHE *heap, int N, int k) |
|
|
844 | { |
|
|
845 | ANHE he = heap [k]; |
|
|
846 | ANHE *E = heap + N + HEAP0; |
|
|
847 | |
|
|
848 | for (;;) |
|
|
849 | { |
|
|
850 | ev_tstamp minat; |
|
|
851 | ANHE *minpos; |
|
|
852 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
853 | |
|
|
854 | /* find minimum child */ |
|
|
855 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
856 | { |
|
|
857 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
858 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
859 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
860 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
861 | } |
|
|
862 | else if (pos < E) |
|
|
863 | { |
|
|
864 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
865 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
866 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
867 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
868 | } |
|
|
869 | else |
|
|
870 | break; |
|
|
871 | |
|
|
872 | if (ANHE_at (he) <= minat) |
|
|
873 | break; |
|
|
874 | |
|
|
875 | heap [k] = *minpos; |
|
|
876 | ev_active (ANHE_w (*minpos)) = k; |
|
|
877 | |
|
|
878 | k = minpos - heap; |
|
|
879 | } |
|
|
880 | |
|
|
881 | heap [k] = he; |
|
|
882 | ev_active (ANHE_w (he)) = k; |
|
|
883 | } |
|
|
884 | |
|
|
885 | #else /* 4HEAP */ |
|
|
886 | |
|
|
887 | #define HEAP0 1 |
|
|
888 | #define HPARENT(k) ((k) >> 1) |
|
|
889 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
890 | |
|
|
891 | /* away from the root */ |
|
|
892 | void inline_speed |
|
|
893 | downheap (ANHE *heap, int N, int k) |
|
|
894 | { |
|
|
895 | ANHE he = heap [k]; |
|
|
896 | |
|
|
897 | for (;;) |
|
|
898 | { |
|
|
899 | int c = k << 1; |
|
|
900 | |
|
|
901 | if (c > N + HEAP0 - 1) |
|
|
902 | break; |
|
|
903 | |
|
|
904 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
905 | ? 1 : 0; |
|
|
906 | |
|
|
907 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
908 | break; |
|
|
909 | |
|
|
910 | heap [k] = heap [c]; |
|
|
911 | ev_active (ANHE_w (heap [k])) = k; |
|
|
912 | |
|
|
913 | k = c; |
|
|
914 | } |
|
|
915 | |
|
|
916 | heap [k] = he; |
|
|
917 | ev_active (ANHE_w (he)) = k; |
|
|
918 | } |
|
|
919 | #endif |
|
|
920 | |
|
|
921 | /* towards the root */ |
|
|
922 | void inline_speed |
|
|
923 | upheap (ANHE *heap, int k) |
|
|
924 | { |
|
|
925 | ANHE he = heap [k]; |
|
|
926 | |
|
|
927 | for (;;) |
|
|
928 | { |
|
|
929 | int p = HPARENT (k); |
|
|
930 | |
|
|
931 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
932 | break; |
|
|
933 | |
|
|
934 | heap [k] = heap [p]; |
|
|
935 | ev_active (ANHE_w (heap [k])) = k; |
|
|
936 | k = p; |
|
|
937 | } |
|
|
938 | |
|
|
939 | heap [k] = he; |
|
|
940 | ev_active (ANHE_w (he)) = k; |
|
|
941 | } |
|
|
942 | |
|
|
943 | void inline_size |
|
|
944 | adjustheap (ANHE *heap, int N, int k) |
|
|
945 | { |
|
|
946 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
947 | upheap (heap, k); |
|
|
948 | else |
|
|
949 | downheap (heap, N, k); |
|
|
950 | } |
|
|
951 | |
|
|
952 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
953 | void inline_size |
|
|
954 | reheap (ANHE *heap, int N) |
|
|
955 | { |
|
|
956 | int i; |
|
|
957 | |
|
|
958 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
959 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
960 | for (i = 0; i < N; ++i) |
|
|
961 | upheap (heap, i + HEAP0); |
|
|
962 | } |
|
|
963 | |
|
|
964 | /*****************************************************************************/ |
|
|
965 | |
108 | typedef struct |
966 | typedef struct |
109 | { |
967 | { |
110 | struct ev_io *head; |
968 | WL head; |
111 | unsigned char wev, rev; /* want, received event set */ |
969 | EV_ATOMIC_T gotsig; |
112 | } ANFD; |
|
|
113 | |
|
|
114 | static ANFD *anfds; |
|
|
115 | static int anfdmax; |
|
|
116 | |
|
|
117 | static int *fdchanges; |
|
|
118 | static int fdchangemax, fdchangecnt; |
|
|
119 | |
|
|
120 | static void |
|
|
121 | anfds_init (ANFD *base, int count) |
|
|
122 | { |
|
|
123 | while (count--) |
|
|
124 | { |
|
|
125 | base->head = 0; |
|
|
126 | base->wev = base->rev = EV_NONE; |
|
|
127 | ++base; |
|
|
128 | } |
|
|
129 | } |
|
|
130 | |
|
|
131 | typedef struct |
|
|
132 | { |
|
|
133 | W w; |
|
|
134 | int events; |
|
|
135 | } ANPENDING; |
|
|
136 | |
|
|
137 | static ANPENDING *pendings; |
|
|
138 | static int pendingmax, pendingcnt; |
|
|
139 | |
|
|
140 | static void |
|
|
141 | event (W w, int events) |
|
|
142 | { |
|
|
143 | w->pending = ++pendingcnt; |
|
|
144 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
145 | pendings [pendingcnt - 1].w = w; |
|
|
146 | pendings [pendingcnt - 1].events = events; |
|
|
147 | } |
|
|
148 | |
|
|
149 | static void |
|
|
150 | fd_event (int fd, int events) |
|
|
151 | { |
|
|
152 | ANFD *anfd = anfds + fd; |
|
|
153 | struct ev_io *w; |
|
|
154 | |
|
|
155 | for (w = anfd->head; w; w = w->next) |
|
|
156 | { |
|
|
157 | int ev = w->events & events; |
|
|
158 | |
|
|
159 | if (ev) |
|
|
160 | event ((W)w, ev); |
|
|
161 | } |
|
|
162 | } |
|
|
163 | |
|
|
164 | static void |
|
|
165 | queue_events (W *events, int eventcnt, int type) |
|
|
166 | { |
|
|
167 | int i; |
|
|
168 | |
|
|
169 | for (i = 0; i < eventcnt; ++i) |
|
|
170 | event (events [i], type); |
|
|
171 | } |
|
|
172 | |
|
|
173 | /*****************************************************************************/ |
|
|
174 | |
|
|
175 | static struct ev_timer **timers; |
|
|
176 | static int timermax, timercnt; |
|
|
177 | |
|
|
178 | static struct ev_periodic **periodics; |
|
|
179 | static int periodicmax, periodiccnt; |
|
|
180 | |
|
|
181 | static void |
|
|
182 | upheap (WT *timers, int k) |
|
|
183 | { |
|
|
184 | WT w = timers [k]; |
|
|
185 | |
|
|
186 | while (k && timers [k >> 1]->at > w->at) |
|
|
187 | { |
|
|
188 | timers [k] = timers [k >> 1]; |
|
|
189 | timers [k]->active = k + 1; |
|
|
190 | k >>= 1; |
|
|
191 | } |
|
|
192 | |
|
|
193 | timers [k] = w; |
|
|
194 | timers [k]->active = k + 1; |
|
|
195 | |
|
|
196 | } |
|
|
197 | |
|
|
198 | static void |
|
|
199 | downheap (WT *timers, int N, int k) |
|
|
200 | { |
|
|
201 | WT w = timers [k]; |
|
|
202 | |
|
|
203 | while (k < (N >> 1)) |
|
|
204 | { |
|
|
205 | int j = k << 1; |
|
|
206 | |
|
|
207 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
208 | ++j; |
|
|
209 | |
|
|
210 | if (w->at <= timers [j]->at) |
|
|
211 | break; |
|
|
212 | |
|
|
213 | timers [k] = timers [j]; |
|
|
214 | timers [k]->active = k + 1; |
|
|
215 | k = j; |
|
|
216 | } |
|
|
217 | |
|
|
218 | timers [k] = w; |
|
|
219 | timers [k]->active = k + 1; |
|
|
220 | } |
|
|
221 | |
|
|
222 | /*****************************************************************************/ |
|
|
223 | |
|
|
224 | typedef struct |
|
|
225 | { |
|
|
226 | struct ev_signal *head; |
|
|
227 | sig_atomic_t gotsig; |
|
|
228 | } ANSIG; |
970 | } ANSIG; |
229 | |
971 | |
230 | static ANSIG *signals; |
972 | static ANSIG *signals; |
231 | static int signalmax; |
973 | static int signalmax; |
232 | |
974 | |
233 | static int sigpipe [2]; |
975 | static EV_ATOMIC_T gotsig; |
234 | static sig_atomic_t gotsig; |
976 | |
235 | static struct ev_io sigev; |
977 | /*****************************************************************************/ |
|
|
978 | |
|
|
979 | void inline_speed |
|
|
980 | fd_intern (int fd) |
|
|
981 | { |
|
|
982 | #ifdef _WIN32 |
|
|
983 | unsigned long arg = 1; |
|
|
984 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
985 | #else |
|
|
986 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
987 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
988 | #endif |
|
|
989 | } |
|
|
990 | |
|
|
991 | static void noinline |
|
|
992 | evpipe_init (EV_P) |
|
|
993 | { |
|
|
994 | if (!ev_is_active (&pipeev)) |
|
|
995 | { |
|
|
996 | #if EV_USE_EVENTFD |
|
|
997 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
998 | { |
|
|
999 | evpipe [0] = -1; |
|
|
1000 | fd_intern (evfd); |
|
|
1001 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
1002 | } |
|
|
1003 | else |
|
|
1004 | #endif |
|
|
1005 | { |
|
|
1006 | while (pipe (evpipe)) |
|
|
1007 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1008 | |
|
|
1009 | fd_intern (evpipe [0]); |
|
|
1010 | fd_intern (evpipe [1]); |
|
|
1011 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
1012 | } |
|
|
1013 | |
|
|
1014 | ev_io_start (EV_A_ &pipeev); |
|
|
1015 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1016 | } |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | void inline_size |
|
|
1020 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1021 | { |
|
|
1022 | if (!*flag) |
|
|
1023 | { |
|
|
1024 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1025 | |
|
|
1026 | *flag = 1; |
|
|
1027 | |
|
|
1028 | #if EV_USE_EVENTFD |
|
|
1029 | if (evfd >= 0) |
|
|
1030 | { |
|
|
1031 | uint64_t counter = 1; |
|
|
1032 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1033 | } |
|
|
1034 | else |
|
|
1035 | #endif |
|
|
1036 | write (evpipe [1], &old_errno, 1); |
|
|
1037 | |
|
|
1038 | errno = old_errno; |
|
|
1039 | } |
|
|
1040 | } |
236 | |
1041 | |
237 | static void |
1042 | static void |
238 | signals_init (ANSIG *base, int count) |
1043 | pipecb (EV_P_ ev_io *iow, int revents) |
239 | { |
1044 | { |
240 | while (count--) |
1045 | #if EV_USE_EVENTFD |
|
|
1046 | if (evfd >= 0) |
|
|
1047 | { |
|
|
1048 | uint64_t counter; |
|
|
1049 | read (evfd, &counter, sizeof (uint64_t)); |
241 | { |
1050 | } |
242 | base->head = 0; |
1051 | else |
|
|
1052 | #endif |
|
|
1053 | { |
|
|
1054 | char dummy; |
|
|
1055 | read (evpipe [0], &dummy, 1); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1059 | { |
|
|
1060 | int signum; |
243 | base->gotsig = 0; |
1061 | gotsig = 0; |
244 | ++base; |
1062 | |
|
|
1063 | for (signum = signalmax; signum--; ) |
|
|
1064 | if (signals [signum].gotsig) |
|
|
1065 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | #if EV_ASYNC_ENABLE |
|
|
1069 | if (gotasync) |
245 | } |
1070 | { |
|
|
1071 | int i; |
|
|
1072 | gotasync = 0; |
|
|
1073 | |
|
|
1074 | for (i = asynccnt; i--; ) |
|
|
1075 | if (asyncs [i]->sent) |
|
|
1076 | { |
|
|
1077 | asyncs [i]->sent = 0; |
|
|
1078 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1079 | } |
|
|
1080 | } |
|
|
1081 | #endif |
246 | } |
1082 | } |
|
|
1083 | |
|
|
1084 | /*****************************************************************************/ |
247 | |
1085 | |
248 | static void |
1086 | static void |
249 | sighandler (int signum) |
1087 | ev_sighandler (int signum) |
250 | { |
1088 | { |
|
|
1089 | #if EV_MULTIPLICITY |
|
|
1090 | struct ev_loop *loop = &default_loop_struct; |
|
|
1091 | #endif |
|
|
1092 | |
|
|
1093 | #if _WIN32 |
|
|
1094 | signal (signum, ev_sighandler); |
|
|
1095 | #endif |
|
|
1096 | |
251 | signals [signum - 1].gotsig = 1; |
1097 | signals [signum - 1].gotsig = 1; |
|
|
1098 | evpipe_write (EV_A_ &gotsig); |
|
|
1099 | } |
252 | |
1100 | |
253 | if (!gotsig) |
1101 | void noinline |
|
|
1102 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1103 | { |
|
|
1104 | WL w; |
|
|
1105 | |
|
|
1106 | #if EV_MULTIPLICITY |
|
|
1107 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1108 | #endif |
|
|
1109 | |
|
|
1110 | --signum; |
|
|
1111 | |
|
|
1112 | if (signum < 0 || signum >= signalmax) |
|
|
1113 | return; |
|
|
1114 | |
|
|
1115 | signals [signum].gotsig = 0; |
|
|
1116 | |
|
|
1117 | for (w = signals [signum].head; w; w = w->next) |
|
|
1118 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1119 | } |
|
|
1120 | |
|
|
1121 | /*****************************************************************************/ |
|
|
1122 | |
|
|
1123 | static WL childs [EV_PID_HASHSIZE]; |
|
|
1124 | |
|
|
1125 | #ifndef _WIN32 |
|
|
1126 | |
|
|
1127 | static ev_signal childev; |
|
|
1128 | |
|
|
1129 | #ifndef WIFCONTINUED |
|
|
1130 | # define WIFCONTINUED(status) 0 |
|
|
1131 | #endif |
|
|
1132 | |
|
|
1133 | void inline_speed |
|
|
1134 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1135 | { |
|
|
1136 | ev_child *w; |
|
|
1137 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1138 | |
|
|
1139 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1140 | { |
|
|
1141 | if ((w->pid == pid || !w->pid) |
|
|
1142 | && (!traced || (w->flags & 1))) |
|
|
1143 | { |
|
|
1144 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1145 | w->rpid = pid; |
|
|
1146 | w->rstatus = status; |
|
|
1147 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1148 | } |
|
|
1149 | } |
|
|
1150 | } |
|
|
1151 | |
|
|
1152 | #ifndef WCONTINUED |
|
|
1153 | # define WCONTINUED 0 |
|
|
1154 | #endif |
|
|
1155 | |
|
|
1156 | static void |
|
|
1157 | childcb (EV_P_ ev_signal *sw, int revents) |
|
|
1158 | { |
|
|
1159 | int pid, status; |
|
|
1160 | |
|
|
1161 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
|
|
1162 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
1163 | if (!WCONTINUED |
|
|
1164 | || errno != EINVAL |
|
|
1165 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1166 | return; |
|
|
1167 | |
|
|
1168 | /* make sure we are called again until all children have been reaped */ |
|
|
1169 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1170 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1171 | |
|
|
1172 | child_reap (EV_A_ pid, pid, status); |
|
|
1173 | if (EV_PID_HASHSIZE > 1) |
|
|
1174 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
1175 | } |
|
|
1176 | |
|
|
1177 | #endif |
|
|
1178 | |
|
|
1179 | /*****************************************************************************/ |
|
|
1180 | |
|
|
1181 | #if EV_USE_PORT |
|
|
1182 | # include "ev_port.c" |
|
|
1183 | #endif |
|
|
1184 | #if EV_USE_KQUEUE |
|
|
1185 | # include "ev_kqueue.c" |
|
|
1186 | #endif |
|
|
1187 | #if EV_USE_EPOLL |
|
|
1188 | # include "ev_epoll.c" |
|
|
1189 | #endif |
|
|
1190 | #if EV_USE_POLL |
|
|
1191 | # include "ev_poll.c" |
|
|
1192 | #endif |
|
|
1193 | #if EV_USE_SELECT |
|
|
1194 | # include "ev_select.c" |
|
|
1195 | #endif |
|
|
1196 | |
|
|
1197 | int |
|
|
1198 | ev_version_major (void) |
|
|
1199 | { |
|
|
1200 | return EV_VERSION_MAJOR; |
|
|
1201 | } |
|
|
1202 | |
|
|
1203 | int |
|
|
1204 | ev_version_minor (void) |
|
|
1205 | { |
|
|
1206 | return EV_VERSION_MINOR; |
|
|
1207 | } |
|
|
1208 | |
|
|
1209 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1210 | int inline_size |
|
|
1211 | enable_secure (void) |
|
|
1212 | { |
|
|
1213 | #ifdef _WIN32 |
|
|
1214 | return 0; |
|
|
1215 | #else |
|
|
1216 | return getuid () != geteuid () |
|
|
1217 | || getgid () != getegid (); |
|
|
1218 | #endif |
|
|
1219 | } |
|
|
1220 | |
|
|
1221 | unsigned int |
|
|
1222 | ev_supported_backends (void) |
|
|
1223 | { |
|
|
1224 | unsigned int flags = 0; |
|
|
1225 | |
|
|
1226 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1227 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1228 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1229 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1230 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1231 | |
|
|
1232 | return flags; |
|
|
1233 | } |
|
|
1234 | |
|
|
1235 | unsigned int |
|
|
1236 | ev_recommended_backends (void) |
|
|
1237 | { |
|
|
1238 | unsigned int flags = ev_supported_backends (); |
|
|
1239 | |
|
|
1240 | #ifndef __NetBSD__ |
|
|
1241 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1242 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1243 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1244 | #endif |
|
|
1245 | #ifdef __APPLE__ |
|
|
1246 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1247 | flags &= ~EVBACKEND_POLL; |
|
|
1248 | #endif |
|
|
1249 | |
|
|
1250 | return flags; |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | unsigned int |
|
|
1254 | ev_embeddable_backends (void) |
|
|
1255 | { |
|
|
1256 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1257 | |
|
|
1258 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1259 | /* please fix it and tell me how to detect the fix */ |
|
|
1260 | flags &= ~EVBACKEND_EPOLL; |
|
|
1261 | |
|
|
1262 | return flags; |
|
|
1263 | } |
|
|
1264 | |
|
|
1265 | unsigned int |
|
|
1266 | ev_backend (EV_P) |
|
|
1267 | { |
|
|
1268 | return backend; |
|
|
1269 | } |
|
|
1270 | |
|
|
1271 | unsigned int |
|
|
1272 | ev_loop_count (EV_P) |
|
|
1273 | { |
|
|
1274 | return loop_count; |
|
|
1275 | } |
|
|
1276 | |
|
|
1277 | void |
|
|
1278 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1279 | { |
|
|
1280 | io_blocktime = interval; |
|
|
1281 | } |
|
|
1282 | |
|
|
1283 | void |
|
|
1284 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1285 | { |
|
|
1286 | timeout_blocktime = interval; |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | static void noinline |
|
|
1290 | loop_init (EV_P_ unsigned int flags) |
|
|
1291 | { |
|
|
1292 | if (!backend) |
|
|
1293 | { |
|
|
1294 | #if EV_USE_MONOTONIC |
254 | { |
1295 | { |
|
|
1296 | struct timespec ts; |
|
|
1297 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1298 | have_monotonic = 1; |
|
|
1299 | } |
|
|
1300 | #endif |
|
|
1301 | |
|
|
1302 | ev_rt_now = ev_time (); |
|
|
1303 | mn_now = get_clock (); |
|
|
1304 | now_floor = mn_now; |
|
|
1305 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1306 | |
|
|
1307 | io_blocktime = 0.; |
|
|
1308 | timeout_blocktime = 0.; |
|
|
1309 | backend = 0; |
|
|
1310 | backend_fd = -1; |
|
|
1311 | gotasync = 0; |
|
|
1312 | #if EV_USE_INOTIFY |
|
|
1313 | fs_fd = -2; |
|
|
1314 | #endif |
|
|
1315 | |
|
|
1316 | /* pid check not overridable via env */ |
|
|
1317 | #ifndef _WIN32 |
|
|
1318 | if (flags & EVFLAG_FORKCHECK) |
|
|
1319 | curpid = getpid (); |
|
|
1320 | #endif |
|
|
1321 | |
|
|
1322 | if (!(flags & EVFLAG_NOENV) |
|
|
1323 | && !enable_secure () |
|
|
1324 | && getenv ("LIBEV_FLAGS")) |
|
|
1325 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1326 | |
|
|
1327 | if (!(flags & 0x0000ffffU)) |
|
|
1328 | flags |= ev_recommended_backends (); |
|
|
1329 | |
|
|
1330 | #if EV_USE_PORT |
|
|
1331 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1332 | #endif |
|
|
1333 | #if EV_USE_KQUEUE |
|
|
1334 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1335 | #endif |
|
|
1336 | #if EV_USE_EPOLL |
|
|
1337 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1338 | #endif |
|
|
1339 | #if EV_USE_POLL |
|
|
1340 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1341 | #endif |
|
|
1342 | #if EV_USE_SELECT |
|
|
1343 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1344 | #endif |
|
|
1345 | |
|
|
1346 | ev_init (&pipeev, pipecb); |
|
|
1347 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1348 | } |
|
|
1349 | } |
|
|
1350 | |
|
|
1351 | static void noinline |
|
|
1352 | loop_destroy (EV_P) |
|
|
1353 | { |
|
|
1354 | int i; |
|
|
1355 | |
|
|
1356 | if (ev_is_active (&pipeev)) |
|
|
1357 | { |
|
|
1358 | ev_ref (EV_A); /* signal watcher */ |
|
|
1359 | ev_io_stop (EV_A_ &pipeev); |
|
|
1360 | |
|
|
1361 | #if EV_USE_EVENTFD |
|
|
1362 | if (evfd >= 0) |
|
|
1363 | close (evfd); |
|
|
1364 | #endif |
|
|
1365 | |
|
|
1366 | if (evpipe [0] >= 0) |
|
|
1367 | { |
|
|
1368 | close (evpipe [0]); |
|
|
1369 | close (evpipe [1]); |
|
|
1370 | } |
|
|
1371 | } |
|
|
1372 | |
|
|
1373 | #if EV_USE_INOTIFY |
|
|
1374 | if (fs_fd >= 0) |
|
|
1375 | close (fs_fd); |
|
|
1376 | #endif |
|
|
1377 | |
|
|
1378 | if (backend_fd >= 0) |
|
|
1379 | close (backend_fd); |
|
|
1380 | |
|
|
1381 | #if EV_USE_PORT |
|
|
1382 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1383 | #endif |
|
|
1384 | #if EV_USE_KQUEUE |
|
|
1385 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1386 | #endif |
|
|
1387 | #if EV_USE_EPOLL |
|
|
1388 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1389 | #endif |
|
|
1390 | #if EV_USE_POLL |
|
|
1391 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1392 | #endif |
|
|
1393 | #if EV_USE_SELECT |
|
|
1394 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1395 | #endif |
|
|
1396 | |
|
|
1397 | for (i = NUMPRI; i--; ) |
|
|
1398 | { |
|
|
1399 | array_free (pending, [i]); |
|
|
1400 | #if EV_IDLE_ENABLE |
|
|
1401 | array_free (idle, [i]); |
|
|
1402 | #endif |
|
|
1403 | } |
|
|
1404 | |
|
|
1405 | ev_free (anfds); anfdmax = 0; |
|
|
1406 | |
|
|
1407 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1408 | array_free (fdchange, EMPTY); |
|
|
1409 | array_free (timer, EMPTY); |
|
|
1410 | #if EV_PERIODIC_ENABLE |
|
|
1411 | array_free (periodic, EMPTY); |
|
|
1412 | #endif |
|
|
1413 | #if EV_FORK_ENABLE |
|
|
1414 | array_free (fork, EMPTY); |
|
|
1415 | #endif |
|
|
1416 | array_free (prepare, EMPTY); |
|
|
1417 | array_free (check, EMPTY); |
|
|
1418 | #if EV_ASYNC_ENABLE |
|
|
1419 | array_free (async, EMPTY); |
|
|
1420 | #endif |
|
|
1421 | |
|
|
1422 | backend = 0; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | #if EV_USE_INOTIFY |
|
|
1426 | void inline_size infy_fork (EV_P); |
|
|
1427 | #endif |
|
|
1428 | |
|
|
1429 | void inline_size |
|
|
1430 | loop_fork (EV_P) |
|
|
1431 | { |
|
|
1432 | #if EV_USE_PORT |
|
|
1433 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1434 | #endif |
|
|
1435 | #if EV_USE_KQUEUE |
|
|
1436 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1437 | #endif |
|
|
1438 | #if EV_USE_EPOLL |
|
|
1439 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1440 | #endif |
|
|
1441 | #if EV_USE_INOTIFY |
|
|
1442 | infy_fork (EV_A); |
|
|
1443 | #endif |
|
|
1444 | |
|
|
1445 | if (ev_is_active (&pipeev)) |
|
|
1446 | { |
|
|
1447 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1448 | /* while we modify the fd vars */ |
255 | gotsig = 1; |
1449 | gotsig = 1; |
256 | write (sigpipe [1], &gotsig, 1); |
1450 | #if EV_ASYNC_ENABLE |
257 | } |
1451 | gotasync = 1; |
258 | } |
1452 | #endif |
259 | |
1453 | |
260 | static void |
1454 | ev_ref (EV_A); |
261 | sigcb (struct ev_io *iow, int revents) |
1455 | ev_io_stop (EV_A_ &pipeev); |
|
|
1456 | |
|
|
1457 | #if EV_USE_EVENTFD |
|
|
1458 | if (evfd >= 0) |
|
|
1459 | close (evfd); |
|
|
1460 | #endif |
|
|
1461 | |
|
|
1462 | if (evpipe [0] >= 0) |
|
|
1463 | { |
|
|
1464 | close (evpipe [0]); |
|
|
1465 | close (evpipe [1]); |
|
|
1466 | } |
|
|
1467 | |
|
|
1468 | evpipe_init (EV_A); |
|
|
1469 | /* now iterate over everything, in case we missed something */ |
|
|
1470 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | postfork = 0; |
|
|
1474 | } |
|
|
1475 | |
|
|
1476 | #if EV_MULTIPLICITY |
|
|
1477 | |
|
|
1478 | struct ev_loop * |
|
|
1479 | ev_loop_new (unsigned int flags) |
262 | { |
1480 | { |
263 | struct ev_signal *w; |
1481 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1482 | |
|
|
1483 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1484 | |
|
|
1485 | loop_init (EV_A_ flags); |
|
|
1486 | |
|
|
1487 | if (ev_backend (EV_A)) |
|
|
1488 | return loop; |
|
|
1489 | |
|
|
1490 | return 0; |
|
|
1491 | } |
|
|
1492 | |
|
|
1493 | void |
|
|
1494 | ev_loop_destroy (EV_P) |
|
|
1495 | { |
|
|
1496 | loop_destroy (EV_A); |
|
|
1497 | ev_free (loop); |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | void |
|
|
1501 | ev_loop_fork (EV_P) |
|
|
1502 | { |
|
|
1503 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | #if EV_VERIFY |
|
|
1507 | static void noinline |
|
|
1508 | verify_watcher (EV_P_ W w) |
|
|
1509 | { |
|
|
1510 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1511 | |
|
|
1512 | if (w->pending) |
|
|
1513 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1514 | } |
|
|
1515 | |
|
|
1516 | static void noinline |
|
|
1517 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1518 | { |
264 | int sig; |
1519 | int i; |
265 | |
1520 | |
266 | gotsig = 0; |
1521 | for (i = HEAP0; i < N + HEAP0; ++i) |
267 | read (sigpipe [0], &revents, 1); |
1522 | { |
|
|
1523 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1524 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1525 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
268 | |
1526 | |
269 | for (sig = signalmax; sig--; ) |
1527 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
270 | if (signals [sig].gotsig) |
1528 | } |
|
|
1529 | } |
|
|
1530 | |
|
|
1531 | static void noinline |
|
|
1532 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1533 | { |
|
|
1534 | while (cnt--) |
|
|
1535 | { |
|
|
1536 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1537 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1538 | } |
|
|
1539 | } |
|
|
1540 | #endif |
|
|
1541 | |
|
|
1542 | void |
|
|
1543 | ev_loop_verify (EV_P) |
|
|
1544 | { |
|
|
1545 | #if EV_VERIFY |
|
|
1546 | int i; |
|
|
1547 | WL w; |
|
|
1548 | |
|
|
1549 | assert (activecnt >= -1); |
|
|
1550 | |
|
|
1551 | assert (fdchangemax >= fdchangecnt); |
|
|
1552 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1553 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1554 | |
|
|
1555 | assert (anfdmax >= 0); |
|
|
1556 | for (i = 0; i < anfdmax; ++i) |
|
|
1557 | for (w = anfds [i].head; w; w = w->next) |
271 | { |
1558 | { |
272 | signals [sig].gotsig = 0; |
1559 | verify_watcher (EV_A_ (W)w); |
273 | |
1560 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
274 | for (w = signals [sig].head; w; w = w->next) |
1561 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
275 | event ((W)w, EV_SIGNAL); |
|
|
276 | } |
1562 | } |
277 | } |
|
|
278 | |
1563 | |
279 | static void |
1564 | assert (timermax >= timercnt); |
280 | siginit (void) |
1565 | verify_heap (EV_A_ timers, timercnt); |
281 | { |
|
|
282 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
283 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
284 | |
1566 | |
285 | /* rather than sort out wether we really need nb, set it */ |
1567 | #if EV_PERIODIC_ENABLE |
286 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
1568 | assert (periodicmax >= periodiccnt); |
287 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
1569 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1570 | #endif |
288 | |
1571 | |
289 | evio_set (&sigev, sigpipe [0], EV_READ); |
1572 | for (i = NUMPRI; i--; ) |
290 | evio_start (&sigev); |
1573 | { |
|
|
1574 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1575 | #if EV_IDLE_ENABLE |
|
|
1576 | assert (idleall >= 0); |
|
|
1577 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1578 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1579 | #endif |
|
|
1580 | } |
|
|
1581 | |
|
|
1582 | #if EV_FORK_ENABLE |
|
|
1583 | assert (forkmax >= forkcnt); |
|
|
1584 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1585 | #endif |
|
|
1586 | |
|
|
1587 | #if EV_ASYNC_ENABLE |
|
|
1588 | assert (asyncmax >= asynccnt); |
|
|
1589 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | assert (preparemax >= preparecnt); |
|
|
1593 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1594 | |
|
|
1595 | assert (checkmax >= checkcnt); |
|
|
1596 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1597 | |
|
|
1598 | # if 0 |
|
|
1599 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1600 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
|
|
1601 | # endif |
|
|
1602 | #endif |
|
|
1603 | } |
|
|
1604 | |
|
|
1605 | #endif /* multiplicity */ |
|
|
1606 | |
|
|
1607 | #if EV_MULTIPLICITY |
|
|
1608 | struct ev_loop * |
|
|
1609 | ev_default_loop_init (unsigned int flags) |
|
|
1610 | #else |
|
|
1611 | int |
|
|
1612 | ev_default_loop (unsigned int flags) |
|
|
1613 | #endif |
|
|
1614 | { |
|
|
1615 | if (!ev_default_loop_ptr) |
|
|
1616 | { |
|
|
1617 | #if EV_MULTIPLICITY |
|
|
1618 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1619 | #else |
|
|
1620 | ev_default_loop_ptr = 1; |
|
|
1621 | #endif |
|
|
1622 | |
|
|
1623 | loop_init (EV_A_ flags); |
|
|
1624 | |
|
|
1625 | if (ev_backend (EV_A)) |
|
|
1626 | { |
|
|
1627 | #ifndef _WIN32 |
|
|
1628 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1629 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1630 | ev_signal_start (EV_A_ &childev); |
|
|
1631 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1632 | #endif |
|
|
1633 | } |
|
|
1634 | else |
|
|
1635 | ev_default_loop_ptr = 0; |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | return ev_default_loop_ptr; |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | void |
|
|
1642 | ev_default_destroy (void) |
|
|
1643 | { |
|
|
1644 | #if EV_MULTIPLICITY |
|
|
1645 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1646 | #endif |
|
|
1647 | |
|
|
1648 | ev_default_loop_ptr = 0; |
|
|
1649 | |
|
|
1650 | #ifndef _WIN32 |
|
|
1651 | ev_ref (EV_A); /* child watcher */ |
|
|
1652 | ev_signal_stop (EV_A_ &childev); |
|
|
1653 | #endif |
|
|
1654 | |
|
|
1655 | loop_destroy (EV_A); |
|
|
1656 | } |
|
|
1657 | |
|
|
1658 | void |
|
|
1659 | ev_default_fork (void) |
|
|
1660 | { |
|
|
1661 | #if EV_MULTIPLICITY |
|
|
1662 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1663 | #endif |
|
|
1664 | |
|
|
1665 | postfork = 1; /* must be in line with ev_loop_fork */ |
291 | } |
1666 | } |
292 | |
1667 | |
293 | /*****************************************************************************/ |
1668 | /*****************************************************************************/ |
294 | |
1669 | |
295 | static struct ev_idle **idles; |
1670 | void |
296 | static int idlemax, idlecnt; |
1671 | ev_invoke (EV_P_ void *w, int revents) |
297 | |
|
|
298 | static struct ev_check **checks; |
|
|
299 | static int checkmax, checkcnt; |
|
|
300 | |
|
|
301 | /*****************************************************************************/ |
|
|
302 | |
|
|
303 | #if HAVE_EPOLL |
|
|
304 | # include "ev_epoll.c" |
|
|
305 | #endif |
|
|
306 | #if HAVE_SELECT |
|
|
307 | # include "ev_select.c" |
|
|
308 | #endif |
|
|
309 | |
|
|
310 | int ev_init (int flags) |
|
|
311 | { |
1672 | { |
312 | #if HAVE_MONOTONIC |
1673 | EV_CB_INVOKE ((W)w, revents); |
313 | { |
|
|
314 | struct timespec ts; |
|
|
315 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
316 | have_monotonic = 1; |
|
|
317 | } |
|
|
318 | #endif |
|
|
319 | |
|
|
320 | ev_now = ev_time (); |
|
|
321 | now = get_clock (); |
|
|
322 | diff = ev_now - now; |
|
|
323 | |
|
|
324 | if (pipe (sigpipe)) |
|
|
325 | return 0; |
|
|
326 | |
|
|
327 | ev_method = EVMETHOD_NONE; |
|
|
328 | #if HAVE_EPOLL |
|
|
329 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
330 | #endif |
|
|
331 | #if HAVE_SELECT |
|
|
332 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
333 | #endif |
|
|
334 | |
|
|
335 | if (ev_method) |
|
|
336 | { |
|
|
337 | evw_init (&sigev, sigcb); |
|
|
338 | siginit (); |
|
|
339 | } |
|
|
340 | |
|
|
341 | return ev_method; |
|
|
342 | } |
1674 | } |
343 | |
1675 | |
344 | /*****************************************************************************/ |
1676 | void inline_speed |
345 | |
1677 | call_pending (EV_P) |
346 | void ev_prefork (void) |
|
|
347 | { |
1678 | { |
348 | /* nop */ |
|
|
349 | } |
|
|
350 | |
|
|
351 | void ev_postfork_parent (void) |
|
|
352 | { |
|
|
353 | /* nop */ |
|
|
354 | } |
|
|
355 | |
|
|
356 | void ev_postfork_child (void) |
|
|
357 | { |
|
|
358 | #if HAVE_EPOLL |
|
|
359 | if (ev_method == EVMETHOD_EPOLL) |
|
|
360 | epoll_postfork_child (); |
|
|
361 | #endif |
|
|
362 | |
|
|
363 | evio_stop (&sigev); |
|
|
364 | close (sigpipe [0]); |
|
|
365 | close (sigpipe [1]); |
|
|
366 | pipe (sigpipe); |
|
|
367 | siginit (); |
|
|
368 | } |
|
|
369 | |
|
|
370 | /*****************************************************************************/ |
|
|
371 | |
|
|
372 | static void |
|
|
373 | fd_reify (void) |
|
|
374 | { |
|
|
375 | int i; |
1679 | int pri; |
376 | |
1680 | |
377 | for (i = 0; i < fdchangecnt; ++i) |
1681 | for (pri = NUMPRI; pri--; ) |
|
|
1682 | while (pendingcnt [pri]) |
378 | { |
1683 | { |
379 | int fd = fdchanges [i]; |
1684 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
380 | ANFD *anfd = anfds + fd; |
|
|
381 | struct ev_io *w; |
|
|
382 | |
1685 | |
383 | int wev = 0; |
1686 | if (expect_true (p->w)) |
|
|
1687 | { |
|
|
1688 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
384 | |
1689 | |
385 | for (w = anfd->head; w; w = w->next) |
1690 | p->w->pending = 0; |
386 | wev |= w->events; |
1691 | EV_CB_INVOKE (p->w, p->events); |
|
|
1692 | EV_FREQUENT_CHECK; |
|
|
1693 | } |
|
|
1694 | } |
|
|
1695 | } |
387 | |
1696 | |
388 | if (anfd->wev != wev) |
1697 | #if EV_IDLE_ENABLE |
|
|
1698 | void inline_size |
|
|
1699 | idle_reify (EV_P) |
|
|
1700 | { |
|
|
1701 | if (expect_false (idleall)) |
|
|
1702 | { |
|
|
1703 | int pri; |
|
|
1704 | |
|
|
1705 | for (pri = NUMPRI; pri--; ) |
389 | { |
1706 | { |
390 | method_modify (fd, anfd->wev, wev); |
1707 | if (pendingcnt [pri]) |
391 | anfd->wev = wev; |
1708 | break; |
|
|
1709 | |
|
|
1710 | if (idlecnt [pri]) |
|
|
1711 | { |
|
|
1712 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1713 | break; |
|
|
1714 | } |
392 | } |
1715 | } |
393 | } |
1716 | } |
394 | |
|
|
395 | fdchangecnt = 0; |
|
|
396 | } |
1717 | } |
|
|
1718 | #endif |
397 | |
1719 | |
398 | static void |
1720 | void inline_size |
399 | call_pending () |
|
|
400 | { |
|
|
401 | int i; |
|
|
402 | |
|
|
403 | for (i = 0; i < pendingcnt; ++i) |
|
|
404 | { |
|
|
405 | ANPENDING *p = pendings + i; |
|
|
406 | |
|
|
407 | if (p->w) |
|
|
408 | { |
|
|
409 | p->w->pending = 0; |
|
|
410 | p->w->cb (p->w, p->events); |
|
|
411 | } |
|
|
412 | } |
|
|
413 | |
|
|
414 | pendingcnt = 0; |
|
|
415 | } |
|
|
416 | |
|
|
417 | static void |
|
|
418 | timers_reify () |
1721 | timers_reify (EV_P) |
419 | { |
1722 | { |
|
|
1723 | EV_FREQUENT_CHECK; |
|
|
1724 | |
420 | while (timercnt && timers [0]->at <= now) |
1725 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
421 | { |
1726 | { |
422 | struct ev_timer *w = timers [0]; |
1727 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1728 | |
|
|
1729 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
423 | |
1730 | |
424 | /* first reschedule or stop timer */ |
1731 | /* first reschedule or stop timer */ |
425 | if (w->repeat) |
1732 | if (w->repeat) |
426 | { |
1733 | { |
427 | w->at = now + w->repeat; |
1734 | ev_at (w) += w->repeat; |
428 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1735 | if (ev_at (w) < mn_now) |
|
|
1736 | ev_at (w) = mn_now; |
|
|
1737 | |
|
|
1738 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1739 | |
|
|
1740 | ANHE_at_cache (timers [HEAP0]); |
429 | downheap ((WT *)timers, timercnt, 0); |
1741 | downheap (timers, timercnt, HEAP0); |
430 | } |
1742 | } |
431 | else |
1743 | else |
432 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1744 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
433 | |
1745 | |
|
|
1746 | EV_FREQUENT_CHECK; |
434 | event ((W)w, EV_TIMEOUT); |
1747 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
435 | } |
1748 | } |
436 | } |
1749 | } |
437 | |
1750 | |
438 | static void |
1751 | #if EV_PERIODIC_ENABLE |
|
|
1752 | void inline_size |
439 | periodics_reify () |
1753 | periodics_reify (EV_P) |
440 | { |
1754 | { |
|
|
1755 | EV_FREQUENT_CHECK; |
|
|
1756 | |
441 | while (periodiccnt && periodics [0]->at <= ev_now) |
1757 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
442 | { |
1758 | { |
443 | struct ev_periodic *w = periodics [0]; |
1759 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1760 | |
|
|
1761 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
444 | |
1762 | |
445 | /* first reschedule or stop timer */ |
1763 | /* first reschedule or stop timer */ |
446 | if (w->interval) |
1764 | if (w->reschedule_cb) |
447 | { |
1765 | { |
448 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1766 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
449 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1767 | |
|
|
1768 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1769 | |
|
|
1770 | ANHE_at_cache (periodics [HEAP0]); |
450 | downheap ((WT *)periodics, periodiccnt, 0); |
1771 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1772 | } |
|
|
1773 | else if (w->interval) |
|
|
1774 | { |
|
|
1775 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1776 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1777 | /* this might happen because of floating point inexactness */ |
|
|
1778 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1779 | { |
|
|
1780 | ev_at (w) += w->interval; |
|
|
1781 | |
|
|
1782 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1783 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1784 | /* has effectively asked to get triggered more often than possible */ |
|
|
1785 | if (ev_at (w) < ev_rt_now) |
|
|
1786 | ev_at (w) = ev_rt_now; |
|
|
1787 | } |
|
|
1788 | |
|
|
1789 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1790 | downheap (periodics, periodiccnt, HEAP0); |
451 | } |
1791 | } |
452 | else |
1792 | else |
453 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1793 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
454 | |
1794 | |
455 | event ((W)w, EV_TIMEOUT); |
1795 | EV_FREQUENT_CHECK; |
|
|
1796 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
456 | } |
1797 | } |
457 | } |
1798 | } |
458 | |
1799 | |
459 | static void |
1800 | static void noinline |
460 | time_jump (ev_tstamp diff) |
1801 | periodics_reschedule (EV_P) |
461 | { |
1802 | { |
462 | int i; |
1803 | int i; |
463 | |
1804 | |
464 | /* adjust periodics */ |
1805 | /* adjust periodics after time jump */ |
465 | for (i = 0; i < periodiccnt; ++i) |
1806 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
466 | { |
1807 | { |
467 | struct ev_periodic *w = periodics [i]; |
1808 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
468 | |
1809 | |
|
|
1810 | if (w->reschedule_cb) |
|
|
1811 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
469 | if (w->interval) |
1812 | else if (w->interval) |
|
|
1813 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1814 | |
|
|
1815 | ANHE_at_cache (periodics [i]); |
|
|
1816 | } |
|
|
1817 | |
|
|
1818 | reheap (periodics, periodiccnt); |
|
|
1819 | } |
|
|
1820 | #endif |
|
|
1821 | |
|
|
1822 | void inline_speed |
|
|
1823 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1824 | { |
|
|
1825 | int i; |
|
|
1826 | |
|
|
1827 | #if EV_USE_MONOTONIC |
|
|
1828 | if (expect_true (have_monotonic)) |
|
|
1829 | { |
|
|
1830 | ev_tstamp odiff = rtmn_diff; |
|
|
1831 | |
|
|
1832 | mn_now = get_clock (); |
|
|
1833 | |
|
|
1834 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1835 | /* interpolate in the meantime */ |
|
|
1836 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
470 | { |
1837 | { |
471 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1838 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1839 | return; |
|
|
1840 | } |
472 | |
1841 | |
473 | if (fabs (diff) >= 1e-4) |
1842 | now_floor = mn_now; |
|
|
1843 | ev_rt_now = ev_time (); |
|
|
1844 | |
|
|
1845 | /* loop a few times, before making important decisions. |
|
|
1846 | * on the choice of "4": one iteration isn't enough, |
|
|
1847 | * in case we get preempted during the calls to |
|
|
1848 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1849 | * to succeed in that case, though. and looping a few more times |
|
|
1850 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1851 | * in the unlikely event of having been preempted here. |
|
|
1852 | */ |
|
|
1853 | for (i = 4; --i; ) |
|
|
1854 | { |
|
|
1855 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1856 | |
|
|
1857 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1858 | return; /* all is well */ |
|
|
1859 | |
|
|
1860 | ev_rt_now = ev_time (); |
|
|
1861 | mn_now = get_clock (); |
|
|
1862 | now_floor = mn_now; |
|
|
1863 | } |
|
|
1864 | |
|
|
1865 | # if EV_PERIODIC_ENABLE |
|
|
1866 | periodics_reschedule (EV_A); |
|
|
1867 | # endif |
|
|
1868 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1869 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1870 | } |
|
|
1871 | else |
|
|
1872 | #endif |
|
|
1873 | { |
|
|
1874 | ev_rt_now = ev_time (); |
|
|
1875 | |
|
|
1876 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1877 | { |
|
|
1878 | #if EV_PERIODIC_ENABLE |
|
|
1879 | periodics_reschedule (EV_A); |
|
|
1880 | #endif |
|
|
1881 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1882 | for (i = 0; i < timercnt; ++i) |
474 | { |
1883 | { |
475 | evperiodic_stop (w); |
1884 | ANHE *he = timers + i + HEAP0; |
476 | evperiodic_start (w); |
1885 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
477 | |
1886 | ANHE_at_cache (*he); |
478 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
479 | } |
1887 | } |
480 | } |
1888 | } |
481 | } |
|
|
482 | |
1889 | |
483 | /* adjust timers. this is easy, as the offset is the same for all */ |
1890 | mn_now = ev_rt_now; |
484 | for (i = 0; i < timercnt; ++i) |
|
|
485 | timers [i]->at += diff; |
|
|
486 | } |
|
|
487 | |
|
|
488 | static void |
|
|
489 | time_update () |
|
|
490 | { |
|
|
491 | int i; |
|
|
492 | |
|
|
493 | ev_now = ev_time (); |
|
|
494 | |
|
|
495 | if (have_monotonic) |
|
|
496 | { |
1891 | } |
497 | ev_tstamp odiff = diff; |
1892 | } |
498 | |
1893 | |
499 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1894 | void |
|
|
1895 | ev_ref (EV_P) |
|
|
1896 | { |
|
|
1897 | ++activecnt; |
|
|
1898 | } |
|
|
1899 | |
|
|
1900 | void |
|
|
1901 | ev_unref (EV_P) |
|
|
1902 | { |
|
|
1903 | --activecnt; |
|
|
1904 | } |
|
|
1905 | |
|
|
1906 | void |
|
|
1907 | ev_now_update (EV_P) |
|
|
1908 | { |
|
|
1909 | time_update (EV_A_ 1e100); |
|
|
1910 | } |
|
|
1911 | |
|
|
1912 | static int loop_done; |
|
|
1913 | |
|
|
1914 | void |
|
|
1915 | ev_loop (EV_P_ int flags) |
|
|
1916 | { |
|
|
1917 | loop_done = EVUNLOOP_CANCEL; |
|
|
1918 | |
|
|
1919 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1920 | |
|
|
1921 | do |
|
|
1922 | { |
|
|
1923 | #if EV_VERIFY >= 2 |
|
|
1924 | ev_loop_verify (EV_A); |
|
|
1925 | #endif |
|
|
1926 | |
|
|
1927 | #ifndef _WIN32 |
|
|
1928 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1929 | if (expect_false (getpid () != curpid)) |
|
|
1930 | { |
|
|
1931 | curpid = getpid (); |
|
|
1932 | postfork = 1; |
|
|
1933 | } |
|
|
1934 | #endif |
|
|
1935 | |
|
|
1936 | #if EV_FORK_ENABLE |
|
|
1937 | /* we might have forked, so queue fork handlers */ |
|
|
1938 | if (expect_false (postfork)) |
|
|
1939 | if (forkcnt) |
|
|
1940 | { |
|
|
1941 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1942 | call_pending (EV_A); |
|
|
1943 | } |
|
|
1944 | #endif |
|
|
1945 | |
|
|
1946 | /* queue prepare watchers (and execute them) */ |
|
|
1947 | if (expect_false (preparecnt)) |
500 | { |
1948 | { |
501 | now = get_clock (); |
1949 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
502 | diff = ev_now - now; |
1950 | call_pending (EV_A); |
503 | |
|
|
504 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
505 | return; /* all is well */ |
|
|
506 | |
|
|
507 | ev_now = ev_time (); |
|
|
508 | } |
1951 | } |
509 | |
1952 | |
510 | time_jump (diff - odiff); |
1953 | if (expect_false (!activecnt)) |
511 | } |
1954 | break; |
512 | else |
|
|
513 | { |
|
|
514 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
515 | time_jump (ev_now - now); |
|
|
516 | |
1955 | |
517 | now = ev_now; |
1956 | /* we might have forked, so reify kernel state if necessary */ |
518 | } |
1957 | if (expect_false (postfork)) |
519 | } |
1958 | loop_fork (EV_A); |
520 | |
1959 | |
521 | int ev_loop_done; |
|
|
522 | |
|
|
523 | void ev_loop (int flags) |
|
|
524 | { |
|
|
525 | double block; |
|
|
526 | ev_loop_done = flags & EVLOOP_ONESHOT; |
|
|
527 | |
|
|
528 | if (checkcnt) |
|
|
529 | { |
|
|
530 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
531 | call_pending (); |
|
|
532 | } |
|
|
533 | |
|
|
534 | do |
|
|
535 | { |
|
|
536 | /* update fd-related kernel structures */ |
1960 | /* update fd-related kernel structures */ |
537 | fd_reify (); |
1961 | fd_reify (EV_A); |
538 | |
1962 | |
539 | /* calculate blocking time */ |
1963 | /* calculate blocking time */ |
|
|
1964 | { |
|
|
1965 | ev_tstamp waittime = 0.; |
|
|
1966 | ev_tstamp sleeptime = 0.; |
540 | |
1967 | |
541 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1968 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
542 | ev_now = ev_time (); |
|
|
543 | |
|
|
544 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
545 | block = 0.; |
|
|
546 | else |
|
|
547 | { |
1969 | { |
|
|
1970 | /* update time to cancel out callback processing overhead */ |
|
|
1971 | time_update (EV_A_ 1e100); |
|
|
1972 | |
548 | block = MAX_BLOCKTIME; |
1973 | waittime = MAX_BLOCKTIME; |
549 | |
1974 | |
550 | if (timercnt) |
1975 | if (timercnt) |
551 | { |
1976 | { |
552 | ev_tstamp to = timers [0]->at - get_clock () + method_fudge; |
1977 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
553 | if (block > to) block = to; |
1978 | if (waittime > to) waittime = to; |
554 | } |
1979 | } |
555 | |
1980 | |
|
|
1981 | #if EV_PERIODIC_ENABLE |
556 | if (periodiccnt) |
1982 | if (periodiccnt) |
557 | { |
1983 | { |
558 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1984 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
559 | if (block > to) block = to; |
1985 | if (waittime > to) waittime = to; |
560 | } |
1986 | } |
|
|
1987 | #endif |
561 | |
1988 | |
562 | if (block < 0.) block = 0.; |
1989 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1990 | waittime = timeout_blocktime; |
|
|
1991 | |
|
|
1992 | sleeptime = waittime - backend_fudge; |
|
|
1993 | |
|
|
1994 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1995 | sleeptime = io_blocktime; |
|
|
1996 | |
|
|
1997 | if (sleeptime) |
|
|
1998 | { |
|
|
1999 | ev_sleep (sleeptime); |
|
|
2000 | waittime -= sleeptime; |
|
|
2001 | } |
563 | } |
2002 | } |
564 | |
2003 | |
565 | method_poll (block); |
2004 | ++loop_count; |
|
|
2005 | backend_poll (EV_A_ waittime); |
566 | |
2006 | |
567 | /* update ev_now, do magic */ |
2007 | /* update ev_rt_now, do magic */ |
568 | time_update (); |
2008 | time_update (EV_A_ waittime + sleeptime); |
|
|
2009 | } |
569 | |
2010 | |
570 | /* queue pending timers and reschedule them */ |
2011 | /* queue pending timers and reschedule them */ |
|
|
2012 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2013 | #if EV_PERIODIC_ENABLE |
571 | periodics_reify (); /* absolute timers first */ |
2014 | periodics_reify (EV_A); /* absolute timers called first */ |
572 | timers_reify (); /* relative timers second */ |
2015 | #endif |
573 | |
2016 | |
|
|
2017 | #if EV_IDLE_ENABLE |
574 | /* queue idle watchers unless io or timers are pending */ |
2018 | /* queue idle watchers unless other events are pending */ |
575 | if (!pendingcnt) |
2019 | idle_reify (EV_A); |
576 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
2020 | #endif |
577 | |
2021 | |
578 | /* queue check and possibly idle watchers */ |
2022 | /* queue check watchers, to be executed first */ |
|
|
2023 | if (expect_false (checkcnt)) |
579 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
2024 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
580 | |
2025 | |
581 | call_pending (); |
2026 | call_pending (EV_A); |
582 | } |
2027 | } |
583 | while (!ev_loop_done); |
2028 | while (expect_true ( |
|
|
2029 | activecnt |
|
|
2030 | && !loop_done |
|
|
2031 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2032 | )); |
|
|
2033 | |
|
|
2034 | if (loop_done == EVUNLOOP_ONE) |
|
|
2035 | loop_done = EVUNLOOP_CANCEL; |
|
|
2036 | } |
|
|
2037 | |
|
|
2038 | void |
|
|
2039 | ev_unloop (EV_P_ int how) |
|
|
2040 | { |
|
|
2041 | loop_done = how; |
584 | } |
2042 | } |
585 | |
2043 | |
586 | /*****************************************************************************/ |
2044 | /*****************************************************************************/ |
587 | |
2045 | |
588 | static void |
2046 | void inline_size |
589 | wlist_add (WL *head, WL elem) |
2047 | wlist_add (WL *head, WL elem) |
590 | { |
2048 | { |
591 | elem->next = *head; |
2049 | elem->next = *head; |
592 | *head = elem; |
2050 | *head = elem; |
593 | } |
2051 | } |
594 | |
2052 | |
595 | static void |
2053 | void inline_size |
596 | wlist_del (WL *head, WL elem) |
2054 | wlist_del (WL *head, WL elem) |
597 | { |
2055 | { |
598 | while (*head) |
2056 | while (*head) |
599 | { |
2057 | { |
600 | if (*head == elem) |
2058 | if (*head == elem) |
… | |
… | |
605 | |
2063 | |
606 | head = &(*head)->next; |
2064 | head = &(*head)->next; |
607 | } |
2065 | } |
608 | } |
2066 | } |
609 | |
2067 | |
610 | static void |
2068 | void inline_speed |
|
|
2069 | clear_pending (EV_P_ W w) |
|
|
2070 | { |
|
|
2071 | if (w->pending) |
|
|
2072 | { |
|
|
2073 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
2074 | w->pending = 0; |
|
|
2075 | } |
|
|
2076 | } |
|
|
2077 | |
|
|
2078 | int |
|
|
2079 | ev_clear_pending (EV_P_ void *w) |
|
|
2080 | { |
|
|
2081 | W w_ = (W)w; |
|
|
2082 | int pending = w_->pending; |
|
|
2083 | |
|
|
2084 | if (expect_true (pending)) |
|
|
2085 | { |
|
|
2086 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2087 | w_->pending = 0; |
|
|
2088 | p->w = 0; |
|
|
2089 | return p->events; |
|
|
2090 | } |
|
|
2091 | else |
|
|
2092 | return 0; |
|
|
2093 | } |
|
|
2094 | |
|
|
2095 | void inline_size |
|
|
2096 | pri_adjust (EV_P_ W w) |
|
|
2097 | { |
|
|
2098 | int pri = w->priority; |
|
|
2099 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2100 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2101 | w->priority = pri; |
|
|
2102 | } |
|
|
2103 | |
|
|
2104 | void inline_speed |
611 | ev_start (W w, int active) |
2105 | ev_start (EV_P_ W w, int active) |
612 | { |
2106 | { |
613 | w->pending = 0; |
2107 | pri_adjust (EV_A_ w); |
614 | w->active = active; |
2108 | w->active = active; |
|
|
2109 | ev_ref (EV_A); |
615 | } |
2110 | } |
616 | |
2111 | |
617 | static void |
2112 | void inline_size |
618 | ev_stop (W w) |
2113 | ev_stop (EV_P_ W w) |
619 | { |
2114 | { |
620 | if (w->pending) |
2115 | ev_unref (EV_A); |
621 | pendings [w->pending - 1].w = 0; |
|
|
622 | |
|
|
623 | w->active = 0; |
2116 | w->active = 0; |
624 | } |
2117 | } |
625 | |
2118 | |
626 | /*****************************************************************************/ |
2119 | /*****************************************************************************/ |
627 | |
2120 | |
628 | void |
2121 | void noinline |
629 | evio_start (struct ev_io *w) |
2122 | ev_io_start (EV_P_ ev_io *w) |
630 | { |
2123 | { |
|
|
2124 | int fd = w->fd; |
|
|
2125 | |
|
|
2126 | if (expect_false (ev_is_active (w))) |
|
|
2127 | return; |
|
|
2128 | |
|
|
2129 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
2130 | assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2131 | |
|
|
2132 | EV_FREQUENT_CHECK; |
|
|
2133 | |
|
|
2134 | ev_start (EV_A_ (W)w, 1); |
|
|
2135 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
2136 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
2137 | |
|
|
2138 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
2139 | w->events &= ~EV_IOFDSET; |
|
|
2140 | |
|
|
2141 | EV_FREQUENT_CHECK; |
|
|
2142 | } |
|
|
2143 | |
|
|
2144 | void noinline |
|
|
2145 | ev_io_stop (EV_P_ ev_io *w) |
|
|
2146 | { |
|
|
2147 | clear_pending (EV_A_ (W)w); |
|
|
2148 | if (expect_false (!ev_is_active (w))) |
|
|
2149 | return; |
|
|
2150 | |
|
|
2151 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2152 | |
|
|
2153 | EV_FREQUENT_CHECK; |
|
|
2154 | |
|
|
2155 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
2156 | ev_stop (EV_A_ (W)w); |
|
|
2157 | |
|
|
2158 | fd_change (EV_A_ w->fd, 1); |
|
|
2159 | |
|
|
2160 | EV_FREQUENT_CHECK; |
|
|
2161 | } |
|
|
2162 | |
|
|
2163 | void noinline |
|
|
2164 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
2165 | { |
|
|
2166 | if (expect_false (ev_is_active (w))) |
|
|
2167 | return; |
|
|
2168 | |
|
|
2169 | ev_at (w) += mn_now; |
|
|
2170 | |
|
|
2171 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
2172 | |
|
|
2173 | EV_FREQUENT_CHECK; |
|
|
2174 | |
|
|
2175 | ++timercnt; |
|
|
2176 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2177 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2178 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2179 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2180 | upheap (timers, ev_active (w)); |
|
|
2181 | |
|
|
2182 | EV_FREQUENT_CHECK; |
|
|
2183 | |
|
|
2184 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2185 | } |
|
|
2186 | |
|
|
2187 | void noinline |
|
|
2188 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
2189 | { |
|
|
2190 | clear_pending (EV_A_ (W)w); |
|
|
2191 | if (expect_false (!ev_is_active (w))) |
|
|
2192 | return; |
|
|
2193 | |
|
|
2194 | EV_FREQUENT_CHECK; |
|
|
2195 | |
|
|
2196 | { |
|
|
2197 | int active = ev_active (w); |
|
|
2198 | |
|
|
2199 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2200 | |
|
|
2201 | --timercnt; |
|
|
2202 | |
|
|
2203 | if (expect_true (active < timercnt + HEAP0)) |
|
|
2204 | { |
|
|
2205 | timers [active] = timers [timercnt + HEAP0]; |
|
|
2206 | adjustheap (timers, timercnt, active); |
|
|
2207 | } |
|
|
2208 | } |
|
|
2209 | |
|
|
2210 | EV_FREQUENT_CHECK; |
|
|
2211 | |
|
|
2212 | ev_at (w) -= mn_now; |
|
|
2213 | |
|
|
2214 | ev_stop (EV_A_ (W)w); |
|
|
2215 | } |
|
|
2216 | |
|
|
2217 | void noinline |
|
|
2218 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
2219 | { |
|
|
2220 | EV_FREQUENT_CHECK; |
|
|
2221 | |
631 | if (ev_is_active (w)) |
2222 | if (ev_is_active (w)) |
|
|
2223 | { |
|
|
2224 | if (w->repeat) |
|
|
2225 | { |
|
|
2226 | ev_at (w) = mn_now + w->repeat; |
|
|
2227 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2228 | adjustheap (timers, timercnt, ev_active (w)); |
|
|
2229 | } |
|
|
2230 | else |
|
|
2231 | ev_timer_stop (EV_A_ w); |
|
|
2232 | } |
|
|
2233 | else if (w->repeat) |
|
|
2234 | { |
|
|
2235 | ev_at (w) = w->repeat; |
|
|
2236 | ev_timer_start (EV_A_ w); |
|
|
2237 | } |
|
|
2238 | |
|
|
2239 | EV_FREQUENT_CHECK; |
|
|
2240 | } |
|
|
2241 | |
|
|
2242 | #if EV_PERIODIC_ENABLE |
|
|
2243 | void noinline |
|
|
2244 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
2245 | { |
|
|
2246 | if (expect_false (ev_is_active (w))) |
632 | return; |
2247 | return; |
633 | |
2248 | |
634 | int fd = w->fd; |
2249 | if (w->reschedule_cb) |
|
|
2250 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2251 | else if (w->interval) |
|
|
2252 | { |
|
|
2253 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
2254 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
2255 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2256 | } |
|
|
2257 | else |
|
|
2258 | ev_at (w) = w->offset; |
635 | |
2259 | |
636 | ev_start ((W)w, 1); |
2260 | EV_FREQUENT_CHECK; |
637 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
638 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
639 | |
2261 | |
640 | ++fdchangecnt; |
2262 | ++periodiccnt; |
641 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
2263 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
642 | fdchanges [fdchangecnt - 1] = fd; |
2264 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
643 | } |
2265 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
2266 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2267 | upheap (periodics, ev_active (w)); |
644 | |
2268 | |
645 | void |
2269 | EV_FREQUENT_CHECK; |
646 | evio_stop (struct ev_io *w) |
2270 | |
|
|
2271 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2272 | } |
|
|
2273 | |
|
|
2274 | void noinline |
|
|
2275 | ev_periodic_stop (EV_P_ ev_periodic *w) |
647 | { |
2276 | { |
|
|
2277 | clear_pending (EV_A_ (W)w); |
648 | if (!ev_is_active (w)) |
2278 | if (expect_false (!ev_is_active (w))) |
649 | return; |
2279 | return; |
650 | |
2280 | |
651 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2281 | EV_FREQUENT_CHECK; |
|
|
2282 | |
|
|
2283 | { |
|
|
2284 | int active = ev_active (w); |
|
|
2285 | |
|
|
2286 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2287 | |
|
|
2288 | --periodiccnt; |
|
|
2289 | |
|
|
2290 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
2291 | { |
|
|
2292 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
2293 | adjustheap (periodics, periodiccnt, active); |
|
|
2294 | } |
|
|
2295 | } |
|
|
2296 | |
|
|
2297 | EV_FREQUENT_CHECK; |
|
|
2298 | |
652 | ev_stop ((W)w); |
2299 | ev_stop (EV_A_ (W)w); |
653 | |
|
|
654 | ++fdchangecnt; |
|
|
655 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
656 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
657 | } |
2300 | } |
658 | |
2301 | |
659 | |
2302 | void noinline |
660 | void |
2303 | ev_periodic_again (EV_P_ ev_periodic *w) |
661 | evtimer_start (struct ev_timer *w) |
|
|
662 | { |
2304 | { |
|
|
2305 | /* TODO: use adjustheap and recalculation */ |
|
|
2306 | ev_periodic_stop (EV_A_ w); |
|
|
2307 | ev_periodic_start (EV_A_ w); |
|
|
2308 | } |
|
|
2309 | #endif |
|
|
2310 | |
|
|
2311 | #ifndef SA_RESTART |
|
|
2312 | # define SA_RESTART 0 |
|
|
2313 | #endif |
|
|
2314 | |
|
|
2315 | void noinline |
|
|
2316 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
2317 | { |
|
|
2318 | #if EV_MULTIPLICITY |
|
|
2319 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2320 | #endif |
663 | if (ev_is_active (w)) |
2321 | if (expect_false (ev_is_active (w))) |
664 | return; |
2322 | return; |
665 | |
2323 | |
666 | w->at += now; |
2324 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
667 | |
2325 | |
668 | ev_start ((W)w, ++timercnt); |
2326 | evpipe_init (EV_A); |
669 | array_needsize (timers, timermax, timercnt, ); |
|
|
670 | timers [timercnt - 1] = w; |
|
|
671 | upheap ((WT *)timers, timercnt - 1); |
|
|
672 | } |
|
|
673 | |
2327 | |
674 | void |
2328 | EV_FREQUENT_CHECK; |
675 | evtimer_stop (struct ev_timer *w) |
2329 | |
|
|
2330 | { |
|
|
2331 | #ifndef _WIN32 |
|
|
2332 | sigset_t full, prev; |
|
|
2333 | sigfillset (&full); |
|
|
2334 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2335 | #endif |
|
|
2336 | |
|
|
2337 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2338 | |
|
|
2339 | #ifndef _WIN32 |
|
|
2340 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2341 | #endif |
|
|
2342 | } |
|
|
2343 | |
|
|
2344 | ev_start (EV_A_ (W)w, 1); |
|
|
2345 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2346 | |
|
|
2347 | if (!((WL)w)->next) |
|
|
2348 | { |
|
|
2349 | #if _WIN32 |
|
|
2350 | signal (w->signum, ev_sighandler); |
|
|
2351 | #else |
|
|
2352 | struct sigaction sa; |
|
|
2353 | sa.sa_handler = ev_sighandler; |
|
|
2354 | sigfillset (&sa.sa_mask); |
|
|
2355 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2356 | sigaction (w->signum, &sa, 0); |
|
|
2357 | #endif |
|
|
2358 | } |
|
|
2359 | |
|
|
2360 | EV_FREQUENT_CHECK; |
|
|
2361 | } |
|
|
2362 | |
|
|
2363 | void noinline |
|
|
2364 | ev_signal_stop (EV_P_ ev_signal *w) |
676 | { |
2365 | { |
|
|
2366 | clear_pending (EV_A_ (W)w); |
677 | if (!ev_is_active (w)) |
2367 | if (expect_false (!ev_is_active (w))) |
678 | return; |
2368 | return; |
679 | |
2369 | |
680 | if (w->active < timercnt--) |
2370 | EV_FREQUENT_CHECK; |
681 | { |
|
|
682 | timers [w->active - 1] = timers [timercnt]; |
|
|
683 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
684 | } |
|
|
685 | |
2371 | |
686 | ev_stop ((W)w); |
|
|
687 | } |
|
|
688 | |
|
|
689 | void |
|
|
690 | evperiodic_start (struct ev_periodic *w) |
|
|
691 | { |
|
|
692 | if (ev_is_active (w)) |
|
|
693 | return; |
|
|
694 | |
|
|
695 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
696 | if (w->interval) |
|
|
697 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
698 | |
|
|
699 | ev_start ((W)w, ++periodiccnt); |
|
|
700 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
701 | periodics [periodiccnt - 1] = w; |
|
|
702 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
703 | } |
|
|
704 | |
|
|
705 | void |
|
|
706 | evperiodic_stop (struct ev_periodic *w) |
|
|
707 | { |
|
|
708 | if (!ev_is_active (w)) |
|
|
709 | return; |
|
|
710 | |
|
|
711 | if (w->active < periodiccnt--) |
|
|
712 | { |
|
|
713 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
714 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
715 | } |
|
|
716 | |
|
|
717 | ev_stop ((W)w); |
|
|
718 | } |
|
|
719 | |
|
|
720 | void |
|
|
721 | evsignal_start (struct ev_signal *w) |
|
|
722 | { |
|
|
723 | if (ev_is_active (w)) |
|
|
724 | return; |
|
|
725 | |
|
|
726 | ev_start ((W)w, 1); |
|
|
727 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
728 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
729 | |
|
|
730 | if (!w->next) |
|
|
731 | { |
|
|
732 | struct sigaction sa; |
|
|
733 | sa.sa_handler = sighandler; |
|
|
734 | sigfillset (&sa.sa_mask); |
|
|
735 | sa.sa_flags = 0; |
|
|
736 | sigaction (w->signum, &sa, 0); |
|
|
737 | } |
|
|
738 | } |
|
|
739 | |
|
|
740 | void |
|
|
741 | evsignal_stop (struct ev_signal *w) |
|
|
742 | { |
|
|
743 | if (!ev_is_active (w)) |
|
|
744 | return; |
|
|
745 | |
|
|
746 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2372 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
747 | ev_stop ((W)w); |
2373 | ev_stop (EV_A_ (W)w); |
748 | |
2374 | |
749 | if (!signals [w->signum - 1].head) |
2375 | if (!signals [w->signum - 1].head) |
750 | signal (w->signum, SIG_DFL); |
2376 | signal (w->signum, SIG_DFL); |
751 | } |
|
|
752 | |
2377 | |
753 | void evidle_start (struct ev_idle *w) |
2378 | EV_FREQUENT_CHECK; |
|
|
2379 | } |
|
|
2380 | |
|
|
2381 | void |
|
|
2382 | ev_child_start (EV_P_ ev_child *w) |
754 | { |
2383 | { |
|
|
2384 | #if EV_MULTIPLICITY |
|
|
2385 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2386 | #endif |
755 | if (ev_is_active (w)) |
2387 | if (expect_false (ev_is_active (w))) |
756 | return; |
2388 | return; |
757 | |
2389 | |
758 | ev_start ((W)w, ++idlecnt); |
2390 | EV_FREQUENT_CHECK; |
759 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
760 | idles [idlecnt - 1] = w; |
|
|
761 | } |
|
|
762 | |
2391 | |
763 | void evidle_stop (struct ev_idle *w) |
2392 | ev_start (EV_A_ (W)w, 1); |
764 | { |
2393 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
765 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
766 | ev_stop ((W)w); |
|
|
767 | } |
|
|
768 | |
2394 | |
769 | void evcheck_start (struct ev_check *w) |
2395 | EV_FREQUENT_CHECK; |
|
|
2396 | } |
|
|
2397 | |
|
|
2398 | void |
|
|
2399 | ev_child_stop (EV_P_ ev_child *w) |
770 | { |
2400 | { |
771 | if (ev_is_active (w)) |
2401 | clear_pending (EV_A_ (W)w); |
|
|
2402 | if (expect_false (!ev_is_active (w))) |
772 | return; |
2403 | return; |
773 | |
2404 | |
|
|
2405 | EV_FREQUENT_CHECK; |
|
|
2406 | |
|
|
2407 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2408 | ev_stop (EV_A_ (W)w); |
|
|
2409 | |
|
|
2410 | EV_FREQUENT_CHECK; |
|
|
2411 | } |
|
|
2412 | |
|
|
2413 | #if EV_STAT_ENABLE |
|
|
2414 | |
|
|
2415 | # ifdef _WIN32 |
|
|
2416 | # undef lstat |
|
|
2417 | # define lstat(a,b) _stati64 (a,b) |
|
|
2418 | # endif |
|
|
2419 | |
|
|
2420 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2421 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2422 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2423 | |
|
|
2424 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2425 | |
|
|
2426 | #if EV_USE_INOTIFY |
|
|
2427 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2428 | |
|
|
2429 | static void noinline |
|
|
2430 | infy_add (EV_P_ ev_stat *w) |
|
|
2431 | { |
|
|
2432 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
2433 | |
|
|
2434 | if (w->wd < 0) |
|
|
2435 | { |
|
|
2436 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2437 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2438 | |
|
|
2439 | /* monitor some parent directory for speedup hints */ |
|
|
2440 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2441 | /* but an efficiency issue only */ |
|
|
2442 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2443 | { |
|
|
2444 | char path [4096]; |
|
|
2445 | strcpy (path, w->path); |
|
|
2446 | |
|
|
2447 | do |
|
|
2448 | { |
|
|
2449 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2450 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2451 | |
|
|
2452 | char *pend = strrchr (path, '/'); |
|
|
2453 | |
|
|
2454 | if (!pend) |
|
|
2455 | break; /* whoops, no '/', complain to your admin */ |
|
|
2456 | |
|
|
2457 | *pend = 0; |
|
|
2458 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2459 | } |
|
|
2460 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2461 | } |
|
|
2462 | } |
|
|
2463 | else |
|
|
2464 | { |
|
|
2465 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2466 | |
|
|
2467 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2468 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2469 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2470 | struct statfs sfs; |
|
|
2471 | |
|
|
2472 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2473 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2474 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2475 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2476 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2477 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2478 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2479 | return; |
|
|
2480 | |
|
|
2481 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2482 | ev_timer_again (EV_A_ &w->timer); |
|
|
2483 | } |
|
|
2484 | } |
|
|
2485 | |
|
|
2486 | static void noinline |
|
|
2487 | infy_del (EV_P_ ev_stat *w) |
|
|
2488 | { |
|
|
2489 | int slot; |
|
|
2490 | int wd = w->wd; |
|
|
2491 | |
|
|
2492 | if (wd < 0) |
|
|
2493 | return; |
|
|
2494 | |
|
|
2495 | w->wd = -2; |
|
|
2496 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2497 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2498 | |
|
|
2499 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2500 | inotify_rm_watch (fs_fd, wd); |
|
|
2501 | } |
|
|
2502 | |
|
|
2503 | static void noinline |
|
|
2504 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2505 | { |
|
|
2506 | if (slot < 0) |
|
|
2507 | /* overflow, need to check for all hash slots */ |
|
|
2508 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2509 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2510 | else |
|
|
2511 | { |
|
|
2512 | WL w_; |
|
|
2513 | |
|
|
2514 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2515 | { |
|
|
2516 | ev_stat *w = (ev_stat *)w_; |
|
|
2517 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2518 | |
|
|
2519 | if (w->wd == wd || wd == -1) |
|
|
2520 | { |
|
|
2521 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2522 | { |
|
|
2523 | w->wd = -1; |
|
|
2524 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2525 | } |
|
|
2526 | |
|
|
2527 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2528 | } |
|
|
2529 | } |
|
|
2530 | } |
|
|
2531 | } |
|
|
2532 | |
|
|
2533 | static void |
|
|
2534 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2535 | { |
|
|
2536 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2537 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2538 | int ofs; |
|
|
2539 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2540 | |
|
|
2541 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2542 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2543 | } |
|
|
2544 | |
|
|
2545 | void inline_size |
|
|
2546 | check_2625 (EV_P) |
|
|
2547 | { |
|
|
2548 | /* kernels < 2.6.25 are borked |
|
|
2549 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2550 | */ |
|
|
2551 | struct utsname buf; |
|
|
2552 | int major, minor, micro; |
|
|
2553 | |
|
|
2554 | if (uname (&buf)) |
|
|
2555 | return; |
|
|
2556 | |
|
|
2557 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2558 | return; |
|
|
2559 | |
|
|
2560 | if (major < 2 |
|
|
2561 | || (major == 2 && minor < 6) |
|
|
2562 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2563 | return; |
|
|
2564 | |
|
|
2565 | fs_2625 = 1; |
|
|
2566 | } |
|
|
2567 | |
|
|
2568 | void inline_size |
|
|
2569 | infy_init (EV_P) |
|
|
2570 | { |
|
|
2571 | if (fs_fd != -2) |
|
|
2572 | return; |
|
|
2573 | |
|
|
2574 | fs_fd = -1; |
|
|
2575 | |
|
|
2576 | check_2625 (EV_A); |
|
|
2577 | |
|
|
2578 | fs_fd = inotify_init (); |
|
|
2579 | |
|
|
2580 | if (fs_fd >= 0) |
|
|
2581 | { |
|
|
2582 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2583 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2584 | ev_io_start (EV_A_ &fs_w); |
|
|
2585 | } |
|
|
2586 | } |
|
|
2587 | |
|
|
2588 | void inline_size |
|
|
2589 | infy_fork (EV_P) |
|
|
2590 | { |
|
|
2591 | int slot; |
|
|
2592 | |
|
|
2593 | if (fs_fd < 0) |
|
|
2594 | return; |
|
|
2595 | |
|
|
2596 | close (fs_fd); |
|
|
2597 | fs_fd = inotify_init (); |
|
|
2598 | |
|
|
2599 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2600 | { |
|
|
2601 | WL w_ = fs_hash [slot].head; |
|
|
2602 | fs_hash [slot].head = 0; |
|
|
2603 | |
|
|
2604 | while (w_) |
|
|
2605 | { |
|
|
2606 | ev_stat *w = (ev_stat *)w_; |
|
|
2607 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2608 | |
|
|
2609 | w->wd = -1; |
|
|
2610 | |
|
|
2611 | if (fs_fd >= 0) |
|
|
2612 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2613 | else |
|
|
2614 | ev_timer_again (EV_A_ &w->timer); |
|
|
2615 | } |
|
|
2616 | } |
|
|
2617 | } |
|
|
2618 | |
|
|
2619 | #endif |
|
|
2620 | |
|
|
2621 | #ifdef _WIN32 |
|
|
2622 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2623 | #else |
|
|
2624 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2625 | #endif |
|
|
2626 | |
|
|
2627 | void |
|
|
2628 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2629 | { |
|
|
2630 | if (lstat (w->path, &w->attr) < 0) |
|
|
2631 | w->attr.st_nlink = 0; |
|
|
2632 | else if (!w->attr.st_nlink) |
|
|
2633 | w->attr.st_nlink = 1; |
|
|
2634 | } |
|
|
2635 | |
|
|
2636 | static void noinline |
|
|
2637 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2638 | { |
|
|
2639 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2640 | |
|
|
2641 | /* we copy this here each the time so that */ |
|
|
2642 | /* prev has the old value when the callback gets invoked */ |
|
|
2643 | w->prev = w->attr; |
|
|
2644 | ev_stat_stat (EV_A_ w); |
|
|
2645 | |
|
|
2646 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2647 | if ( |
|
|
2648 | w->prev.st_dev != w->attr.st_dev |
|
|
2649 | || w->prev.st_ino != w->attr.st_ino |
|
|
2650 | || w->prev.st_mode != w->attr.st_mode |
|
|
2651 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2652 | || w->prev.st_uid != w->attr.st_uid |
|
|
2653 | || w->prev.st_gid != w->attr.st_gid |
|
|
2654 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2655 | || w->prev.st_size != w->attr.st_size |
|
|
2656 | || w->prev.st_atime != w->attr.st_atime |
|
|
2657 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2658 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2659 | ) { |
|
|
2660 | #if EV_USE_INOTIFY |
|
|
2661 | if (fs_fd >= 0) |
|
|
2662 | { |
|
|
2663 | infy_del (EV_A_ w); |
|
|
2664 | infy_add (EV_A_ w); |
|
|
2665 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2666 | } |
|
|
2667 | #endif |
|
|
2668 | |
|
|
2669 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2670 | } |
|
|
2671 | } |
|
|
2672 | |
|
|
2673 | void |
|
|
2674 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2675 | { |
|
|
2676 | if (expect_false (ev_is_active (w))) |
|
|
2677 | return; |
|
|
2678 | |
|
|
2679 | ev_stat_stat (EV_A_ w); |
|
|
2680 | |
|
|
2681 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
2682 | w->interval = MIN_STAT_INTERVAL; |
|
|
2683 | |
|
|
2684 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
2685 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2686 | |
|
|
2687 | #if EV_USE_INOTIFY |
|
|
2688 | infy_init (EV_A); |
|
|
2689 | |
|
|
2690 | if (fs_fd >= 0) |
|
|
2691 | infy_add (EV_A_ w); |
|
|
2692 | else |
|
|
2693 | #endif |
|
|
2694 | ev_timer_again (EV_A_ &w->timer); |
|
|
2695 | |
|
|
2696 | ev_start (EV_A_ (W)w, 1); |
|
|
2697 | |
|
|
2698 | EV_FREQUENT_CHECK; |
|
|
2699 | } |
|
|
2700 | |
|
|
2701 | void |
|
|
2702 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2703 | { |
|
|
2704 | clear_pending (EV_A_ (W)w); |
|
|
2705 | if (expect_false (!ev_is_active (w))) |
|
|
2706 | return; |
|
|
2707 | |
|
|
2708 | EV_FREQUENT_CHECK; |
|
|
2709 | |
|
|
2710 | #if EV_USE_INOTIFY |
|
|
2711 | infy_del (EV_A_ w); |
|
|
2712 | #endif |
|
|
2713 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2714 | |
|
|
2715 | ev_stop (EV_A_ (W)w); |
|
|
2716 | |
|
|
2717 | EV_FREQUENT_CHECK; |
|
|
2718 | } |
|
|
2719 | #endif |
|
|
2720 | |
|
|
2721 | #if EV_IDLE_ENABLE |
|
|
2722 | void |
|
|
2723 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2724 | { |
|
|
2725 | if (expect_false (ev_is_active (w))) |
|
|
2726 | return; |
|
|
2727 | |
|
|
2728 | pri_adjust (EV_A_ (W)w); |
|
|
2729 | |
|
|
2730 | EV_FREQUENT_CHECK; |
|
|
2731 | |
|
|
2732 | { |
|
|
2733 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2734 | |
|
|
2735 | ++idleall; |
|
|
2736 | ev_start (EV_A_ (W)w, active); |
|
|
2737 | |
|
|
2738 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2739 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2740 | } |
|
|
2741 | |
|
|
2742 | EV_FREQUENT_CHECK; |
|
|
2743 | } |
|
|
2744 | |
|
|
2745 | void |
|
|
2746 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2747 | { |
|
|
2748 | clear_pending (EV_A_ (W)w); |
|
|
2749 | if (expect_false (!ev_is_active (w))) |
|
|
2750 | return; |
|
|
2751 | |
|
|
2752 | EV_FREQUENT_CHECK; |
|
|
2753 | |
|
|
2754 | { |
|
|
2755 | int active = ev_active (w); |
|
|
2756 | |
|
|
2757 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2758 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2759 | |
|
|
2760 | ev_stop (EV_A_ (W)w); |
|
|
2761 | --idleall; |
|
|
2762 | } |
|
|
2763 | |
|
|
2764 | EV_FREQUENT_CHECK; |
|
|
2765 | } |
|
|
2766 | #endif |
|
|
2767 | |
|
|
2768 | void |
|
|
2769 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2770 | { |
|
|
2771 | if (expect_false (ev_is_active (w))) |
|
|
2772 | return; |
|
|
2773 | |
|
|
2774 | EV_FREQUENT_CHECK; |
|
|
2775 | |
|
|
2776 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2777 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2778 | prepares [preparecnt - 1] = w; |
|
|
2779 | |
|
|
2780 | EV_FREQUENT_CHECK; |
|
|
2781 | } |
|
|
2782 | |
|
|
2783 | void |
|
|
2784 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2785 | { |
|
|
2786 | clear_pending (EV_A_ (W)w); |
|
|
2787 | if (expect_false (!ev_is_active (w))) |
|
|
2788 | return; |
|
|
2789 | |
|
|
2790 | EV_FREQUENT_CHECK; |
|
|
2791 | |
|
|
2792 | { |
|
|
2793 | int active = ev_active (w); |
|
|
2794 | |
|
|
2795 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2796 | ev_active (prepares [active - 1]) = active; |
|
|
2797 | } |
|
|
2798 | |
|
|
2799 | ev_stop (EV_A_ (W)w); |
|
|
2800 | |
|
|
2801 | EV_FREQUENT_CHECK; |
|
|
2802 | } |
|
|
2803 | |
|
|
2804 | void |
|
|
2805 | ev_check_start (EV_P_ ev_check *w) |
|
|
2806 | { |
|
|
2807 | if (expect_false (ev_is_active (w))) |
|
|
2808 | return; |
|
|
2809 | |
|
|
2810 | EV_FREQUENT_CHECK; |
|
|
2811 | |
774 | ev_start ((W)w, ++checkcnt); |
2812 | ev_start (EV_A_ (W)w, ++checkcnt); |
775 | array_needsize (checks, checkmax, checkcnt, ); |
2813 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
776 | checks [checkcnt - 1] = w; |
2814 | checks [checkcnt - 1] = w; |
777 | } |
|
|
778 | |
2815 | |
|
|
2816 | EV_FREQUENT_CHECK; |
|
|
2817 | } |
|
|
2818 | |
|
|
2819 | void |
779 | void evcheck_stop (struct ev_check *w) |
2820 | ev_check_stop (EV_P_ ev_check *w) |
780 | { |
2821 | { |
|
|
2822 | clear_pending (EV_A_ (W)w); |
|
|
2823 | if (expect_false (!ev_is_active (w))) |
|
|
2824 | return; |
|
|
2825 | |
|
|
2826 | EV_FREQUENT_CHECK; |
|
|
2827 | |
|
|
2828 | { |
|
|
2829 | int active = ev_active (w); |
|
|
2830 | |
781 | checks [w->active - 1] = checks [--checkcnt]; |
2831 | checks [active - 1] = checks [--checkcnt]; |
|
|
2832 | ev_active (checks [active - 1]) = active; |
|
|
2833 | } |
|
|
2834 | |
782 | ev_stop ((W)w); |
2835 | ev_stop (EV_A_ (W)w); |
|
|
2836 | |
|
|
2837 | EV_FREQUENT_CHECK; |
783 | } |
2838 | } |
|
|
2839 | |
|
|
2840 | #if EV_EMBED_ENABLE |
|
|
2841 | void noinline |
|
|
2842 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2843 | { |
|
|
2844 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2845 | } |
|
|
2846 | |
|
|
2847 | static void |
|
|
2848 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2849 | { |
|
|
2850 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2851 | |
|
|
2852 | if (ev_cb (w)) |
|
|
2853 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2854 | else |
|
|
2855 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2856 | } |
|
|
2857 | |
|
|
2858 | static void |
|
|
2859 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2860 | { |
|
|
2861 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2862 | |
|
|
2863 | { |
|
|
2864 | struct ev_loop *loop = w->other; |
|
|
2865 | |
|
|
2866 | while (fdchangecnt) |
|
|
2867 | { |
|
|
2868 | fd_reify (EV_A); |
|
|
2869 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2870 | } |
|
|
2871 | } |
|
|
2872 | } |
|
|
2873 | |
|
|
2874 | static void |
|
|
2875 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
2876 | { |
|
|
2877 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
2878 | |
|
|
2879 | { |
|
|
2880 | struct ev_loop *loop = w->other; |
|
|
2881 | |
|
|
2882 | ev_loop_fork (EV_A); |
|
|
2883 | } |
|
|
2884 | } |
|
|
2885 | |
|
|
2886 | #if 0 |
|
|
2887 | static void |
|
|
2888 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2889 | { |
|
|
2890 | ev_idle_stop (EV_A_ idle); |
|
|
2891 | } |
|
|
2892 | #endif |
|
|
2893 | |
|
|
2894 | void |
|
|
2895 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2896 | { |
|
|
2897 | if (expect_false (ev_is_active (w))) |
|
|
2898 | return; |
|
|
2899 | |
|
|
2900 | { |
|
|
2901 | struct ev_loop *loop = w->other; |
|
|
2902 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2903 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2904 | } |
|
|
2905 | |
|
|
2906 | EV_FREQUENT_CHECK; |
|
|
2907 | |
|
|
2908 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2909 | ev_io_start (EV_A_ &w->io); |
|
|
2910 | |
|
|
2911 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2912 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2913 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2914 | |
|
|
2915 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
2916 | ev_fork_start (EV_A_ &w->fork); |
|
|
2917 | |
|
|
2918 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2919 | |
|
|
2920 | ev_start (EV_A_ (W)w, 1); |
|
|
2921 | |
|
|
2922 | EV_FREQUENT_CHECK; |
|
|
2923 | } |
|
|
2924 | |
|
|
2925 | void |
|
|
2926 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2927 | { |
|
|
2928 | clear_pending (EV_A_ (W)w); |
|
|
2929 | if (expect_false (!ev_is_active (w))) |
|
|
2930 | return; |
|
|
2931 | |
|
|
2932 | EV_FREQUENT_CHECK; |
|
|
2933 | |
|
|
2934 | ev_io_stop (EV_A_ &w->io); |
|
|
2935 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2936 | ev_fork_stop (EV_A_ &w->fork); |
|
|
2937 | |
|
|
2938 | EV_FREQUENT_CHECK; |
|
|
2939 | } |
|
|
2940 | #endif |
|
|
2941 | |
|
|
2942 | #if EV_FORK_ENABLE |
|
|
2943 | void |
|
|
2944 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2945 | { |
|
|
2946 | if (expect_false (ev_is_active (w))) |
|
|
2947 | return; |
|
|
2948 | |
|
|
2949 | EV_FREQUENT_CHECK; |
|
|
2950 | |
|
|
2951 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2952 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2953 | forks [forkcnt - 1] = w; |
|
|
2954 | |
|
|
2955 | EV_FREQUENT_CHECK; |
|
|
2956 | } |
|
|
2957 | |
|
|
2958 | void |
|
|
2959 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2960 | { |
|
|
2961 | clear_pending (EV_A_ (W)w); |
|
|
2962 | if (expect_false (!ev_is_active (w))) |
|
|
2963 | return; |
|
|
2964 | |
|
|
2965 | EV_FREQUENT_CHECK; |
|
|
2966 | |
|
|
2967 | { |
|
|
2968 | int active = ev_active (w); |
|
|
2969 | |
|
|
2970 | forks [active - 1] = forks [--forkcnt]; |
|
|
2971 | ev_active (forks [active - 1]) = active; |
|
|
2972 | } |
|
|
2973 | |
|
|
2974 | ev_stop (EV_A_ (W)w); |
|
|
2975 | |
|
|
2976 | EV_FREQUENT_CHECK; |
|
|
2977 | } |
|
|
2978 | #endif |
|
|
2979 | |
|
|
2980 | #if EV_ASYNC_ENABLE |
|
|
2981 | void |
|
|
2982 | ev_async_start (EV_P_ ev_async *w) |
|
|
2983 | { |
|
|
2984 | if (expect_false (ev_is_active (w))) |
|
|
2985 | return; |
|
|
2986 | |
|
|
2987 | evpipe_init (EV_A); |
|
|
2988 | |
|
|
2989 | EV_FREQUENT_CHECK; |
|
|
2990 | |
|
|
2991 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2992 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2993 | asyncs [asynccnt - 1] = w; |
|
|
2994 | |
|
|
2995 | EV_FREQUENT_CHECK; |
|
|
2996 | } |
|
|
2997 | |
|
|
2998 | void |
|
|
2999 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3000 | { |
|
|
3001 | clear_pending (EV_A_ (W)w); |
|
|
3002 | if (expect_false (!ev_is_active (w))) |
|
|
3003 | return; |
|
|
3004 | |
|
|
3005 | EV_FREQUENT_CHECK; |
|
|
3006 | |
|
|
3007 | { |
|
|
3008 | int active = ev_active (w); |
|
|
3009 | |
|
|
3010 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3011 | ev_active (asyncs [active - 1]) = active; |
|
|
3012 | } |
|
|
3013 | |
|
|
3014 | ev_stop (EV_A_ (W)w); |
|
|
3015 | |
|
|
3016 | EV_FREQUENT_CHECK; |
|
|
3017 | } |
|
|
3018 | |
|
|
3019 | void |
|
|
3020 | ev_async_send (EV_P_ ev_async *w) |
|
|
3021 | { |
|
|
3022 | w->sent = 1; |
|
|
3023 | evpipe_write (EV_A_ &gotasync); |
|
|
3024 | } |
|
|
3025 | #endif |
784 | |
3026 | |
785 | /*****************************************************************************/ |
3027 | /*****************************************************************************/ |
786 | |
3028 | |
787 | #if 1 |
3029 | struct ev_once |
788 | |
3030 | { |
789 | struct ev_io wio; |
3031 | ev_io io; |
|
|
3032 | ev_timer to; |
|
|
3033 | void (*cb)(int revents, void *arg); |
|
|
3034 | void *arg; |
|
|
3035 | }; |
790 | |
3036 | |
791 | static void |
3037 | static void |
792 | sin_cb (struct ev_io *w, int revents) |
3038 | once_cb (EV_P_ struct ev_once *once, int revents) |
793 | { |
3039 | { |
794 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3040 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
3041 | void *arg = once->arg; |
|
|
3042 | |
|
|
3043 | ev_io_stop (EV_A_ &once->io); |
|
|
3044 | ev_timer_stop (EV_A_ &once->to); |
|
|
3045 | ev_free (once); |
|
|
3046 | |
|
|
3047 | cb (revents, arg); |
795 | } |
3048 | } |
796 | |
3049 | |
797 | static void |
3050 | static void |
798 | ocb (struct ev_timer *w, int revents) |
3051 | once_cb_io (EV_P_ ev_io *w, int revents) |
799 | { |
3052 | { |
800 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3053 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
801 | evtimer_stop (w); |
3054 | |
802 | evtimer_start (w); |
3055 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
803 | } |
3056 | } |
804 | |
3057 | |
805 | static void |
3058 | static void |
806 | scb (struct ev_signal *w, int revents) |
3059 | once_cb_to (EV_P_ ev_timer *w, int revents) |
807 | { |
3060 | { |
808 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
3061 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
809 | evio_stop (&wio); |
|
|
810 | evio_start (&wio); |
|
|
811 | } |
|
|
812 | |
3062 | |
813 | static void |
3063 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
814 | gcb (struct ev_signal *w, int revents) |
|
|
815 | { |
|
|
816 | fprintf (stderr, "generic %x\n", revents); |
|
|
817 | |
|
|
818 | } |
3064 | } |
819 | |
3065 | |
820 | int main (void) |
3066 | void |
|
|
3067 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
821 | { |
3068 | { |
822 | ev_init (0); |
3069 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
823 | |
3070 | |
824 | evio_init (&wio, sin_cb, 0, EV_READ); |
3071 | if (expect_false (!once)) |
825 | evio_start (&wio); |
|
|
826 | |
|
|
827 | struct ev_timer t[10000]; |
|
|
828 | |
|
|
829 | #if 0 |
|
|
830 | int i; |
|
|
831 | for (i = 0; i < 10000; ++i) |
|
|
832 | { |
|
|
833 | struct ev_timer *w = t + i; |
|
|
834 | evw_init (w, ocb, i); |
|
|
835 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
836 | evtimer_start (w); |
|
|
837 | if (drand48 () < 0.5) |
|
|
838 | evtimer_stop (w); |
|
|
839 | } |
3072 | { |
840 | #endif |
3073 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
841 | |
|
|
842 | struct ev_timer t1; |
|
|
843 | evtimer_init (&t1, ocb, 5, 10); |
|
|
844 | evtimer_start (&t1); |
|
|
845 | |
|
|
846 | struct ev_signal sig; |
|
|
847 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
848 | evsignal_start (&sig); |
|
|
849 | |
|
|
850 | struct ev_check cw; |
|
|
851 | evcheck_init (&cw, gcb); |
|
|
852 | evcheck_start (&cw); |
|
|
853 | |
|
|
854 | struct ev_idle iw; |
|
|
855 | evidle_init (&iw, gcb); |
|
|
856 | evidle_start (&iw); |
|
|
857 | |
|
|
858 | ev_loop (0); |
|
|
859 | |
|
|
860 | return 0; |
3074 | return; |
861 | } |
3075 | } |
862 | |
3076 | |
863 | #endif |
3077 | once->cb = cb; |
|
|
3078 | once->arg = arg; |
864 | |
3079 | |
|
|
3080 | ev_init (&once->io, once_cb_io); |
|
|
3081 | if (fd >= 0) |
|
|
3082 | { |
|
|
3083 | ev_io_set (&once->io, fd, events); |
|
|
3084 | ev_io_start (EV_A_ &once->io); |
|
|
3085 | } |
865 | |
3086 | |
|
|
3087 | ev_init (&once->to, once_cb_to); |
|
|
3088 | if (timeout >= 0.) |
|
|
3089 | { |
|
|
3090 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3091 | ev_timer_start (EV_A_ &once->to); |
|
|
3092 | } |
|
|
3093 | } |
866 | |
3094 | |
|
|
3095 | #if EV_MULTIPLICITY |
|
|
3096 | #include "ev_wrap.h" |
|
|
3097 | #endif |
867 | |
3098 | |
|
|
3099 | #ifdef __cplusplus |
|
|
3100 | } |
|
|
3101 | #endif |
|
|
3102 | |