1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
|
|
10 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
11 | * this list of conditions and the following disclaimer. |
|
|
12 | * |
|
|
13 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
14 | * notice, this list of conditions and the following disclaimer in the |
|
|
15 | * documentation and/or other materials provided with the distribution. |
|
|
16 | * |
|
|
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
|
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
|
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
|
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
|
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
|
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
|
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
|
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
30 | */ |
38 | */ |
|
|
39 | |
|
|
40 | #ifdef __cplusplus |
|
|
41 | extern "C" { |
|
|
42 | #endif |
|
|
43 | |
|
|
44 | /* this big block deduces configuration from config.h */ |
|
|
45 | #ifndef EV_STANDALONE |
31 | #if EV_USE_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
|
|
47 | # include EV_CONFIG_H |
|
|
48 | # else |
32 | # include "config.h" |
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 | |
33 | #endif |
132 | #endif |
34 | |
133 | |
35 | #include <math.h> |
134 | #include <math.h> |
36 | #include <stdlib.h> |
135 | #include <stdlib.h> |
37 | #include <unistd.h> |
|
|
38 | #include <fcntl.h> |
136 | #include <fcntl.h> |
39 | #include <signal.h> |
|
|
40 | #include <stddef.h> |
137 | #include <stddef.h> |
41 | |
138 | |
42 | #include <stdio.h> |
139 | #include <stdio.h> |
43 | |
140 | |
44 | #include <assert.h> |
141 | #include <assert.h> |
45 | #include <errno.h> |
142 | #include <errno.h> |
46 | #include <sys/types.h> |
143 | #include <sys/types.h> |
47 | #include <sys/wait.h> |
|
|
48 | #include <sys/time.h> |
|
|
49 | #include <time.h> |
144 | #include <time.h> |
50 | |
145 | |
51 | /**/ |
146 | #include <signal.h> |
|
|
147 | |
|
|
148 | #ifdef EV_H |
|
|
149 | # include EV_H |
|
|
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 | # define WIN32_LEAN_AND_MEAN |
|
|
160 | # include <windows.h> |
|
|
161 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
162 | # define EV_SELECT_IS_WINSOCKET 1 |
|
|
163 | # endif |
|
|
164 | #endif |
|
|
165 | |
|
|
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
52 | |
167 | |
53 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
54 | # define EV_USE_MONOTONIC 1 |
169 | # define EV_USE_MONOTONIC 0 |
|
|
170 | #endif |
|
|
171 | |
|
|
172 | #ifndef EV_USE_REALTIME |
|
|
173 | # define EV_USE_REALTIME 0 |
|
|
174 | #endif |
|
|
175 | |
|
|
176 | #ifndef EV_USE_NANOSLEEP |
|
|
177 | # define EV_USE_NANOSLEEP 0 |
55 | #endif |
178 | #endif |
56 | |
179 | |
57 | #ifndef EV_USE_SELECT |
180 | #ifndef EV_USE_SELECT |
58 | # define EV_USE_SELECT 1 |
181 | # define EV_USE_SELECT 1 |
59 | #endif |
182 | #endif |
60 | |
183 | |
61 | #ifndef EV_USE_POLL |
184 | #ifndef EV_USE_POLL |
62 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
185 | # ifdef _WIN32 |
|
|
186 | # define EV_USE_POLL 0 |
|
|
187 | # else |
|
|
188 | # define EV_USE_POLL 1 |
|
|
189 | # endif |
63 | #endif |
190 | #endif |
64 | |
191 | |
65 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
|
|
193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
194 | # define EV_USE_EPOLL 1 |
|
|
195 | # else |
66 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
|
|
197 | # endif |
67 | #endif |
198 | #endif |
68 | |
199 | |
69 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
70 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
71 | #endif |
202 | #endif |
72 | |
203 | |
73 | #ifndef EV_USE_REALTIME |
204 | #ifndef EV_USE_PORT |
|
|
205 | # define EV_USE_PORT 0 |
|
|
206 | #endif |
|
|
207 | |
|
|
208 | #ifndef EV_USE_INOTIFY |
|
|
209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
74 | # define EV_USE_REALTIME 1 |
210 | # define EV_USE_INOTIFY 1 |
|
|
211 | # else |
|
|
212 | # define EV_USE_INOTIFY 0 |
75 | #endif |
213 | # endif |
|
|
214 | #endif |
76 | |
215 | |
77 | /**/ |
216 | #ifndef EV_PID_HASHSIZE |
|
|
217 | # if EV_MINIMAL |
|
|
218 | # define EV_PID_HASHSIZE 1 |
|
|
219 | # else |
|
|
220 | # define EV_PID_HASHSIZE 16 |
|
|
221 | # endif |
|
|
222 | #endif |
|
|
223 | |
|
|
224 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
225 | # if EV_MINIMAL |
|
|
226 | # define EV_INOTIFY_HASHSIZE 1 |
|
|
227 | # else |
|
|
228 | # define EV_INOTIFY_HASHSIZE 16 |
|
|
229 | # endif |
|
|
230 | #endif |
|
|
231 | |
|
|
232 | #ifndef EV_USE_EVENTFD |
|
|
233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
234 | # define EV_USE_EVENTFD 1 |
|
|
235 | # else |
|
|
236 | # define EV_USE_EVENTFD 0 |
|
|
237 | # endif |
|
|
238 | #endif |
|
|
239 | |
|
|
240 | #ifndef EV_USE_4HEAP |
|
|
241 | # define EV_USE_4HEAP !EV_MINIMAL |
|
|
242 | #endif |
|
|
243 | |
|
|
244 | #ifndef EV_HEAP_CACHE_AT |
|
|
245 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
|
|
246 | #endif |
|
|
247 | |
|
|
248 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
78 | |
249 | |
79 | #ifndef CLOCK_MONOTONIC |
250 | #ifndef CLOCK_MONOTONIC |
80 | # undef EV_USE_MONOTONIC |
251 | # undef EV_USE_MONOTONIC |
81 | # define EV_USE_MONOTONIC 0 |
252 | # define EV_USE_MONOTONIC 0 |
82 | #endif |
253 | #endif |
… | |
… | |
84 | #ifndef CLOCK_REALTIME |
255 | #ifndef CLOCK_REALTIME |
85 | # undef EV_USE_REALTIME |
256 | # undef EV_USE_REALTIME |
86 | # define EV_USE_REALTIME 0 |
257 | # define EV_USE_REALTIME 0 |
87 | #endif |
258 | #endif |
88 | |
259 | |
|
|
260 | #if !EV_STAT_ENABLE |
|
|
261 | # undef EV_USE_INOTIFY |
|
|
262 | # define EV_USE_INOTIFY 0 |
|
|
263 | #endif |
|
|
264 | |
|
|
265 | #if !EV_USE_NANOSLEEP |
|
|
266 | # ifndef _WIN32 |
|
|
267 | # include <sys/select.h> |
|
|
268 | # endif |
|
|
269 | #endif |
|
|
270 | |
|
|
271 | #if EV_USE_INOTIFY |
|
|
272 | # include <sys/inotify.h> |
|
|
273 | #endif |
|
|
274 | |
|
|
275 | #if EV_SELECT_IS_WINSOCKET |
|
|
276 | # include <winsock.h> |
|
|
277 | #endif |
|
|
278 | |
|
|
279 | #if EV_USE_EVENTFD |
|
|
280 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
281 | # include <stdint.h> |
|
|
282 | # ifdef __cplusplus |
|
|
283 | extern "C" { |
|
|
284 | # endif |
|
|
285 | int eventfd (unsigned int initval, int flags); |
|
|
286 | # ifdef __cplusplus |
|
|
287 | } |
|
|
288 | # endif |
|
|
289 | #endif |
|
|
290 | |
89 | /**/ |
291 | /**/ |
90 | |
292 | |
|
|
293 | /* |
|
|
294 | * This is used to avoid floating point rounding problems. |
|
|
295 | * It is added to ev_rt_now when scheduling periodics |
|
|
296 | * to ensure progress, time-wise, even when rounding |
|
|
297 | * errors are against us. |
|
|
298 | * This value is good at least till the year 4000. |
|
|
299 | * Better solutions welcome. |
|
|
300 | */ |
|
|
301 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
|
|
302 | |
91 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
303 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
92 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
304 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
93 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
94 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
305 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
95 | |
306 | |
96 | #include "ev.h" |
|
|
97 | |
|
|
98 | #if __GNUC__ >= 3 |
307 | #if __GNUC__ >= 4 |
99 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
308 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
100 | # define inline inline |
309 | # define noinline __attribute__ ((noinline)) |
101 | #else |
310 | #else |
102 | # define expect(expr,value) (expr) |
311 | # define expect(expr,value) (expr) |
103 | # define inline static |
312 | # define noinline |
|
|
313 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
314 | # define inline |
|
|
315 | # endif |
104 | #endif |
316 | #endif |
105 | |
317 | |
106 | #define expect_false(expr) expect ((expr) != 0, 0) |
318 | #define expect_false(expr) expect ((expr) != 0, 0) |
107 | #define expect_true(expr) expect ((expr) != 0, 1) |
319 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
320 | #define inline_size static inline |
|
|
321 | |
|
|
322 | #if EV_MINIMAL |
|
|
323 | # define inline_speed static noinline |
|
|
324 | #else |
|
|
325 | # define inline_speed static inline |
|
|
326 | #endif |
108 | |
327 | |
109 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
328 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
110 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
329 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
111 | |
330 | |
|
|
331 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
332 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
333 | |
112 | typedef struct ev_watcher *W; |
334 | typedef ev_watcher *W; |
113 | typedef struct ev_watcher_list *WL; |
335 | typedef ev_watcher_list *WL; |
114 | typedef struct ev_watcher_time *WT; |
336 | typedef ev_watcher_time *WT; |
115 | |
337 | |
116 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
338 | #define ev_active(w) ((W)(w))->active |
|
|
339 | #define ev_at(w) ((WT)(w))->at |
|
|
340 | |
|
|
341 | #if EV_USE_MONOTONIC |
|
|
342 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
343 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
344 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
345 | #endif |
|
|
346 | |
|
|
347 | #ifdef _WIN32 |
|
|
348 | # include "ev_win32.c" |
|
|
349 | #endif |
|
|
350 | |
|
|
351 | /*****************************************************************************/ |
|
|
352 | |
|
|
353 | static void (*syserr_cb)(const char *msg); |
|
|
354 | |
|
|
355 | void |
|
|
356 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
357 | { |
|
|
358 | syserr_cb = cb; |
|
|
359 | } |
|
|
360 | |
|
|
361 | static void noinline |
|
|
362 | syserr (const char *msg) |
|
|
363 | { |
|
|
364 | if (!msg) |
|
|
365 | msg = "(libev) system error"; |
|
|
366 | |
|
|
367 | if (syserr_cb) |
|
|
368 | syserr_cb (msg); |
|
|
369 | else |
|
|
370 | { |
|
|
371 | perror (msg); |
|
|
372 | abort (); |
|
|
373 | } |
|
|
374 | } |
|
|
375 | |
|
|
376 | static void * |
|
|
377 | ev_realloc_emul (void *ptr, long size) |
|
|
378 | { |
|
|
379 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
380 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
381 | * the single unix specification, so work around them here. |
|
|
382 | */ |
|
|
383 | |
|
|
384 | if (size) |
|
|
385 | return realloc (ptr, size); |
|
|
386 | |
|
|
387 | free (ptr); |
|
|
388 | return 0; |
|
|
389 | } |
|
|
390 | |
|
|
391 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
392 | |
|
|
393 | void |
|
|
394 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
395 | { |
|
|
396 | alloc = cb; |
|
|
397 | } |
|
|
398 | |
|
|
399 | inline_speed void * |
|
|
400 | ev_realloc (void *ptr, long size) |
|
|
401 | { |
|
|
402 | ptr = alloc (ptr, size); |
|
|
403 | |
|
|
404 | if (!ptr && size) |
|
|
405 | { |
|
|
406 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
407 | abort (); |
|
|
408 | } |
|
|
409 | |
|
|
410 | return ptr; |
|
|
411 | } |
|
|
412 | |
|
|
413 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
414 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
415 | |
|
|
416 | /*****************************************************************************/ |
|
|
417 | |
|
|
418 | typedef struct |
|
|
419 | { |
|
|
420 | WL head; |
|
|
421 | unsigned char events; |
|
|
422 | unsigned char reify; |
|
|
423 | #if EV_SELECT_IS_WINSOCKET |
|
|
424 | SOCKET handle; |
|
|
425 | #endif |
|
|
426 | } ANFD; |
|
|
427 | |
|
|
428 | typedef struct |
|
|
429 | { |
|
|
430 | W w; |
|
|
431 | int events; |
|
|
432 | } ANPENDING; |
|
|
433 | |
|
|
434 | #if EV_USE_INOTIFY |
|
|
435 | /* hash table entry per inotify-id */ |
|
|
436 | typedef struct |
|
|
437 | { |
|
|
438 | WL head; |
|
|
439 | } ANFS; |
|
|
440 | #endif |
|
|
441 | |
|
|
442 | /* Heap Entry */ |
|
|
443 | #if EV_HEAP_CACHE_AT |
|
|
444 | typedef struct { |
|
|
445 | ev_tstamp at; |
|
|
446 | WT w; |
|
|
447 | } ANHE; |
|
|
448 | |
|
|
449 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
450 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
451 | #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
452 | #else |
|
|
453 | typedef WT ANHE; |
|
|
454 | |
|
|
455 | #define ANHE_w(he) (he) |
|
|
456 | #define ANHE_at(he) (he)->at |
|
|
457 | #define ANHE_at_set(he) |
|
|
458 | #endif |
|
|
459 | |
|
|
460 | #if EV_MULTIPLICITY |
|
|
461 | |
|
|
462 | struct ev_loop |
|
|
463 | { |
|
|
464 | ev_tstamp ev_rt_now; |
|
|
465 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
466 | #define VAR(name,decl) decl; |
|
|
467 | #include "ev_vars.h" |
|
|
468 | #undef VAR |
|
|
469 | }; |
|
|
470 | #include "ev_wrap.h" |
|
|
471 | |
|
|
472 | static struct ev_loop default_loop_struct; |
|
|
473 | struct ev_loop *ev_default_loop_ptr; |
|
|
474 | |
|
|
475 | #else |
|
|
476 | |
117 | ev_tstamp ev_now; |
477 | ev_tstamp ev_rt_now; |
118 | int ev_method; |
478 | #define VAR(name,decl) static decl; |
|
|
479 | #include "ev_vars.h" |
|
|
480 | #undef VAR |
119 | |
481 | |
120 | static int have_monotonic; /* runtime */ |
482 | static int ev_default_loop_ptr; |
121 | |
483 | |
122 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
484 | #endif |
123 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
124 | static void (*method_poll)(ev_tstamp timeout); |
|
|
125 | |
485 | |
126 | /*****************************************************************************/ |
486 | /*****************************************************************************/ |
127 | |
487 | |
128 | ev_tstamp |
488 | ev_tstamp |
129 | ev_time (void) |
489 | ev_time (void) |
… | |
… | |
137 | gettimeofday (&tv, 0); |
497 | gettimeofday (&tv, 0); |
138 | return tv.tv_sec + tv.tv_usec * 1e-6; |
498 | return tv.tv_sec + tv.tv_usec * 1e-6; |
139 | #endif |
499 | #endif |
140 | } |
500 | } |
141 | |
501 | |
142 | static ev_tstamp |
502 | ev_tstamp inline_size |
143 | get_clock (void) |
503 | get_clock (void) |
144 | { |
504 | { |
145 | #if EV_USE_MONOTONIC |
505 | #if EV_USE_MONOTONIC |
146 | if (expect_true (have_monotonic)) |
506 | if (expect_true (have_monotonic)) |
147 | { |
507 | { |
… | |
… | |
152 | #endif |
512 | #endif |
153 | |
513 | |
154 | return ev_time (); |
514 | return ev_time (); |
155 | } |
515 | } |
156 | |
516 | |
157 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
517 | #if EV_MULTIPLICITY |
|
|
518 | ev_tstamp |
|
|
519 | ev_now (EV_P) |
|
|
520 | { |
|
|
521 | return ev_rt_now; |
|
|
522 | } |
|
|
523 | #endif |
158 | |
524 | |
159 | #define array_needsize(base,cur,cnt,init) \ |
525 | void |
160 | if (expect_false ((cnt) > cur)) \ |
526 | ev_sleep (ev_tstamp delay) |
161 | { \ |
527 | { |
162 | int newcnt = cur; \ |
528 | if (delay > 0.) |
163 | do \ |
|
|
164 | { \ |
|
|
165 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
166 | } \ |
|
|
167 | while ((cnt) > newcnt); \ |
|
|
168 | \ |
|
|
169 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
170 | init (base + cur, newcnt - cur); \ |
|
|
171 | cur = newcnt; \ |
|
|
172 | } |
529 | { |
|
|
530 | #if EV_USE_NANOSLEEP |
|
|
531 | struct timespec ts; |
|
|
532 | |
|
|
533 | ts.tv_sec = (time_t)delay; |
|
|
534 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
535 | |
|
|
536 | nanosleep (&ts, 0); |
|
|
537 | #elif defined(_WIN32) |
|
|
538 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
539 | #else |
|
|
540 | struct timeval tv; |
|
|
541 | |
|
|
542 | tv.tv_sec = (time_t)delay; |
|
|
543 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
544 | |
|
|
545 | select (0, 0, 0, 0, &tv); |
|
|
546 | #endif |
|
|
547 | } |
|
|
548 | } |
173 | |
549 | |
174 | /*****************************************************************************/ |
550 | /*****************************************************************************/ |
175 | |
551 | |
176 | typedef struct |
552 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
177 | { |
|
|
178 | struct ev_io *head; |
|
|
179 | unsigned char events; |
|
|
180 | unsigned char reify; |
|
|
181 | } ANFD; |
|
|
182 | |
553 | |
183 | static ANFD *anfds; |
554 | int inline_size |
184 | static int anfdmax; |
555 | array_nextsize (int elem, int cur, int cnt) |
|
|
556 | { |
|
|
557 | int ncur = cur + 1; |
185 | |
558 | |
186 | static void |
559 | do |
|
|
560 | ncur <<= 1; |
|
|
561 | while (cnt > ncur); |
|
|
562 | |
|
|
563 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
564 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
565 | { |
|
|
566 | ncur *= elem; |
|
|
567 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
568 | ncur = ncur - sizeof (void *) * 4; |
|
|
569 | ncur /= elem; |
|
|
570 | } |
|
|
571 | |
|
|
572 | return ncur; |
|
|
573 | } |
|
|
574 | |
|
|
575 | static noinline void * |
|
|
576 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
577 | { |
|
|
578 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
579 | return ev_realloc (base, elem * *cur); |
|
|
580 | } |
|
|
581 | |
|
|
582 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
583 | if (expect_false ((cnt) > (cur))) \ |
|
|
584 | { \ |
|
|
585 | int ocur_ = (cur); \ |
|
|
586 | (base) = (type *)array_realloc \ |
|
|
587 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
588 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
589 | } |
|
|
590 | |
|
|
591 | #if 0 |
|
|
592 | #define array_slim(type,stem) \ |
|
|
593 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
594 | { \ |
|
|
595 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
596 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
597 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
598 | } |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | #define array_free(stem, idx) \ |
|
|
602 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
603 | |
|
|
604 | /*****************************************************************************/ |
|
|
605 | |
|
|
606 | void noinline |
|
|
607 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
608 | { |
|
|
609 | W w_ = (W)w; |
|
|
610 | int pri = ABSPRI (w_); |
|
|
611 | |
|
|
612 | if (expect_false (w_->pending)) |
|
|
613 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
614 | else |
|
|
615 | { |
|
|
616 | w_->pending = ++pendingcnt [pri]; |
|
|
617 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
618 | pendings [pri][w_->pending - 1].w = w_; |
|
|
619 | pendings [pri][w_->pending - 1].events = revents; |
|
|
620 | } |
|
|
621 | } |
|
|
622 | |
|
|
623 | void inline_speed |
|
|
624 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
625 | { |
|
|
626 | int i; |
|
|
627 | |
|
|
628 | for (i = 0; i < eventcnt; ++i) |
|
|
629 | ev_feed_event (EV_A_ events [i], type); |
|
|
630 | } |
|
|
631 | |
|
|
632 | /*****************************************************************************/ |
|
|
633 | |
|
|
634 | void inline_size |
187 | anfds_init (ANFD *base, int count) |
635 | anfds_init (ANFD *base, int count) |
188 | { |
636 | { |
189 | while (count--) |
637 | while (count--) |
190 | { |
638 | { |
191 | base->head = 0; |
639 | base->head = 0; |
… | |
… | |
194 | |
642 | |
195 | ++base; |
643 | ++base; |
196 | } |
644 | } |
197 | } |
645 | } |
198 | |
646 | |
199 | typedef struct |
647 | void inline_speed |
200 | { |
|
|
201 | W w; |
|
|
202 | int events; |
|
|
203 | } ANPENDING; |
|
|
204 | |
|
|
205 | static ANPENDING *pendings [NUMPRI]; |
|
|
206 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
|
|
207 | |
|
|
208 | static void |
|
|
209 | event (W w, int events) |
|
|
210 | { |
|
|
211 | if (w->pending) |
|
|
212 | { |
|
|
213 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
|
|
214 | return; |
|
|
215 | } |
|
|
216 | |
|
|
217 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
218 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
219 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
220 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
221 | } |
|
|
222 | |
|
|
223 | static void |
|
|
224 | queue_events (W *events, int eventcnt, int type) |
|
|
225 | { |
|
|
226 | int i; |
|
|
227 | |
|
|
228 | for (i = 0; i < eventcnt; ++i) |
|
|
229 | event (events [i], type); |
|
|
230 | } |
|
|
231 | |
|
|
232 | static void |
|
|
233 | fd_event (int fd, int events) |
648 | fd_event (EV_P_ int fd, int revents) |
234 | { |
649 | { |
235 | ANFD *anfd = anfds + fd; |
650 | ANFD *anfd = anfds + fd; |
236 | struct ev_io *w; |
651 | ev_io *w; |
237 | |
652 | |
238 | for (w = anfd->head; w; w = w->next) |
653 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
239 | { |
654 | { |
240 | int ev = w->events & events; |
655 | int ev = w->events & revents; |
241 | |
656 | |
242 | if (ev) |
657 | if (ev) |
243 | event ((W)w, ev); |
658 | ev_feed_event (EV_A_ (W)w, ev); |
244 | } |
659 | } |
245 | } |
660 | } |
246 | |
661 | |
247 | /*****************************************************************************/ |
662 | void |
|
|
663 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
664 | { |
|
|
665 | if (fd >= 0 && fd < anfdmax) |
|
|
666 | fd_event (EV_A_ fd, revents); |
|
|
667 | } |
248 | |
668 | |
249 | static int *fdchanges; |
669 | void inline_size |
250 | static int fdchangemax, fdchangecnt; |
670 | fd_reify (EV_P) |
251 | |
|
|
252 | static void |
|
|
253 | fd_reify (void) |
|
|
254 | { |
671 | { |
255 | int i; |
672 | int i; |
256 | |
673 | |
257 | for (i = 0; i < fdchangecnt; ++i) |
674 | for (i = 0; i < fdchangecnt; ++i) |
258 | { |
675 | { |
259 | int fd = fdchanges [i]; |
676 | int fd = fdchanges [i]; |
260 | ANFD *anfd = anfds + fd; |
677 | ANFD *anfd = anfds + fd; |
261 | struct ev_io *w; |
678 | ev_io *w; |
262 | |
679 | |
263 | int events = 0; |
680 | unsigned char events = 0; |
264 | |
681 | |
265 | for (w = anfd->head; w; w = w->next) |
682 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
266 | events |= w->events; |
683 | events |= (unsigned char)w->events; |
267 | |
684 | |
268 | anfd->reify = 0; |
685 | #if EV_SELECT_IS_WINSOCKET |
269 | |
686 | if (events) |
270 | if (anfd->events != events) |
|
|
271 | { |
687 | { |
272 | method_modify (fd, anfd->events, events); |
688 | unsigned long argp; |
273 | anfd->events = events; |
689 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
690 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
691 | #else |
|
|
692 | anfd->handle = _get_osfhandle (fd); |
|
|
693 | #endif |
|
|
694 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
274 | } |
695 | } |
|
|
696 | #endif |
|
|
697 | |
|
|
698 | { |
|
|
699 | unsigned char o_events = anfd->events; |
|
|
700 | unsigned char o_reify = anfd->reify; |
|
|
701 | |
|
|
702 | anfd->reify = 0; |
|
|
703 | anfd->events = events; |
|
|
704 | |
|
|
705 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
706 | backend_modify (EV_A_ fd, o_events, events); |
|
|
707 | } |
275 | } |
708 | } |
276 | |
709 | |
277 | fdchangecnt = 0; |
710 | fdchangecnt = 0; |
278 | } |
711 | } |
279 | |
712 | |
280 | static void |
713 | void inline_size |
281 | fd_change (int fd) |
714 | fd_change (EV_P_ int fd, int flags) |
282 | { |
715 | { |
283 | if (anfds [fd].reify || fdchangecnt < 0) |
716 | unsigned char reify = anfds [fd].reify; |
284 | return; |
|
|
285 | |
|
|
286 | anfds [fd].reify = 1; |
717 | anfds [fd].reify |= flags; |
287 | |
718 | |
|
|
719 | if (expect_true (!reify)) |
|
|
720 | { |
288 | ++fdchangecnt; |
721 | ++fdchangecnt; |
289 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
722 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
290 | fdchanges [fdchangecnt - 1] = fd; |
723 | fdchanges [fdchangecnt - 1] = fd; |
|
|
724 | } |
291 | } |
725 | } |
292 | |
726 | |
293 | static void |
727 | void inline_speed |
294 | fd_kill (int fd) |
728 | fd_kill (EV_P_ int fd) |
295 | { |
729 | { |
296 | struct ev_io *w; |
730 | ev_io *w; |
297 | |
731 | |
298 | printf ("killing fd %d\n", fd);//D |
|
|
299 | while ((w = anfds [fd].head)) |
732 | while ((w = (ev_io *)anfds [fd].head)) |
300 | { |
733 | { |
301 | ev_io_stop (w); |
734 | ev_io_stop (EV_A_ w); |
302 | event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
735 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
303 | } |
736 | } |
|
|
737 | } |
|
|
738 | |
|
|
739 | int inline_size |
|
|
740 | fd_valid (int fd) |
|
|
741 | { |
|
|
742 | #ifdef _WIN32 |
|
|
743 | return _get_osfhandle (fd) != -1; |
|
|
744 | #else |
|
|
745 | return fcntl (fd, F_GETFD) != -1; |
|
|
746 | #endif |
304 | } |
747 | } |
305 | |
748 | |
306 | /* called on EBADF to verify fds */ |
749 | /* called on EBADF to verify fds */ |
307 | static void |
750 | static void noinline |
308 | fd_ebadf (void) |
751 | fd_ebadf (EV_P) |
309 | { |
752 | { |
310 | int fd; |
753 | int fd; |
311 | |
754 | |
312 | for (fd = 0; fd < anfdmax; ++fd) |
755 | for (fd = 0; fd < anfdmax; ++fd) |
313 | if (anfds [fd].events) |
756 | if (anfds [fd].events) |
314 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
757 | if (!fd_valid (fd) == -1 && errno == EBADF) |
315 | fd_kill (fd); |
758 | fd_kill (EV_A_ fd); |
316 | } |
759 | } |
317 | |
760 | |
318 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
761 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
319 | static void |
762 | static void noinline |
320 | fd_enomem (void) |
763 | fd_enomem (EV_P) |
321 | { |
764 | { |
322 | int fd = anfdmax; |
765 | int fd; |
323 | |
766 | |
324 | while (fd--) |
767 | for (fd = anfdmax; fd--; ) |
325 | if (anfds [fd].events) |
768 | if (anfds [fd].events) |
326 | { |
769 | { |
327 | close (fd); |
|
|
328 | fd_kill (fd); |
770 | fd_kill (EV_A_ fd); |
329 | return; |
771 | return; |
330 | } |
772 | } |
331 | } |
773 | } |
332 | |
774 | |
|
|
775 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
776 | static void noinline |
|
|
777 | fd_rearm_all (EV_P) |
|
|
778 | { |
|
|
779 | int fd; |
|
|
780 | |
|
|
781 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
782 | if (anfds [fd].events) |
|
|
783 | { |
|
|
784 | anfds [fd].events = 0; |
|
|
785 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
786 | } |
|
|
787 | } |
|
|
788 | |
333 | /*****************************************************************************/ |
789 | /*****************************************************************************/ |
334 | |
790 | |
335 | static struct ev_timer **timers; |
791 | /* |
336 | static int timermax, timercnt; |
792 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
793 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
794 | * the branching factor of the d-tree. |
|
|
795 | */ |
337 | |
796 | |
338 | static struct ev_periodic **periodics; |
797 | /* |
339 | static int periodicmax, periodiccnt; |
798 | * at the moment we allow libev the luxury of two heaps, |
|
|
799 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
800 | * which is more cache-efficient. |
|
|
801 | * the difference is about 5% with 50000+ watchers. |
|
|
802 | */ |
|
|
803 | #if EV_USE_4HEAP |
340 | |
804 | |
341 | static void |
805 | #define DHEAP 4 |
342 | upheap (WT *timers, int k) |
806 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
343 | { |
|
|
344 | WT w = timers [k]; |
|
|
345 | |
807 | |
346 | while (k && timers [k >> 1]->at > w->at) |
808 | /* towards the root */ |
347 | { |
809 | void inline_speed |
348 | timers [k] = timers [k >> 1]; |
810 | upheap (ANHE *heap, int k) |
349 | timers [k]->active = k + 1; |
811 | { |
350 | k >>= 1; |
812 | ANHE he = heap [k]; |
|
|
813 | |
|
|
814 | for (;;) |
351 | } |
815 | { |
|
|
816 | int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
352 | |
817 | |
353 | timers [k] = w; |
818 | if (p == k || ANHE_at (heap [p]) <= ANHE_at (he)) |
354 | timers [k]->active = k + 1; |
|
|
355 | |
|
|
356 | } |
|
|
357 | |
|
|
358 | static void |
|
|
359 | downheap (WT *timers, int N, int k) |
|
|
360 | { |
|
|
361 | WT w = timers [k]; |
|
|
362 | |
|
|
363 | while (k < (N >> 1)) |
|
|
364 | { |
|
|
365 | int j = k << 1; |
|
|
366 | |
|
|
367 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
368 | ++j; |
|
|
369 | |
|
|
370 | if (w->at <= timers [j]->at) |
|
|
371 | break; |
819 | break; |
372 | |
820 | |
373 | timers [k] = timers [j]; |
821 | heap [k] = heap [p]; |
374 | timers [k]->active = k + 1; |
822 | ev_active (ANHE_w (heap [k])) = k; |
375 | k = j; |
823 | k = p; |
|
|
824 | } |
|
|
825 | |
|
|
826 | ev_active (ANHE_w (he)) = k; |
|
|
827 | heap [k] = he; |
|
|
828 | } |
|
|
829 | |
|
|
830 | /* away from the root */ |
|
|
831 | void inline_speed |
|
|
832 | downheap (ANHE *heap, int N, int k) |
|
|
833 | { |
|
|
834 | ANHE he = heap [k]; |
|
|
835 | ANHE *E = heap + N + HEAP0; |
|
|
836 | |
|
|
837 | for (;;) |
376 | } |
838 | { |
|
|
839 | ev_tstamp minat; |
|
|
840 | ANHE *minpos; |
|
|
841 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
377 | |
842 | |
378 | timers [k] = w; |
843 | // find minimum child |
379 | timers [k]->active = k + 1; |
844 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
845 | { |
|
|
846 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
847 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
848 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
849 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
850 | } |
|
|
851 | else if (pos < E) |
|
|
852 | { |
|
|
853 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
854 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
855 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
856 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
857 | } |
|
|
858 | else |
|
|
859 | break; |
|
|
860 | |
|
|
861 | if (ANHE_at (he) <= minat) |
|
|
862 | break; |
|
|
863 | |
|
|
864 | ev_active (ANHE_w (*minpos)) = k; |
|
|
865 | heap [k] = *minpos; |
|
|
866 | |
|
|
867 | k = minpos - heap; |
|
|
868 | } |
|
|
869 | |
|
|
870 | ev_active (ANHE_w (he)) = k; |
|
|
871 | heap [k] = he; |
|
|
872 | } |
|
|
873 | |
|
|
874 | #else // 4HEAP |
|
|
875 | |
|
|
876 | #define HEAP0 1 |
|
|
877 | |
|
|
878 | /* towards the root */ |
|
|
879 | void inline_speed |
|
|
880 | upheap (ANHE *heap, int k) |
|
|
881 | { |
|
|
882 | ANHE he = heap [k]; |
|
|
883 | |
|
|
884 | for (;;) |
|
|
885 | { |
|
|
886 | int p = k >> 1; |
|
|
887 | |
|
|
888 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
889 | if (!p || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
890 | break; |
|
|
891 | |
|
|
892 | heap [k] = heap [p]; |
|
|
893 | ev_active (ANHE_w (heap [k])) = k; |
|
|
894 | k = p; |
|
|
895 | } |
|
|
896 | |
|
|
897 | heap [k] = he; |
|
|
898 | ev_active (ANHE_w (heap [k])) = k; |
|
|
899 | } |
|
|
900 | |
|
|
901 | /* away from the root */ |
|
|
902 | void inline_speed |
|
|
903 | downheap (ANHE *heap, int N, int k) |
|
|
904 | { |
|
|
905 | ANHE he = heap [k]; |
|
|
906 | |
|
|
907 | for (;;) |
|
|
908 | { |
|
|
909 | int c = k << 1; |
|
|
910 | |
|
|
911 | if (c > N) |
|
|
912 | break; |
|
|
913 | |
|
|
914 | c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
915 | ? 1 : 0; |
|
|
916 | |
|
|
917 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
918 | break; |
|
|
919 | |
|
|
920 | heap [k] = heap [c]; |
|
|
921 | ev_active (ANHE_w (heap [k])) = k; |
|
|
922 | |
|
|
923 | k = c; |
|
|
924 | } |
|
|
925 | |
|
|
926 | heap [k] = he; |
|
|
927 | ev_active (ANHE_w (he)) = k; |
|
|
928 | } |
|
|
929 | #endif |
|
|
930 | |
|
|
931 | void inline_size |
|
|
932 | adjustheap (ANHE *heap, int N, int k) |
|
|
933 | { |
|
|
934 | upheap (heap, k); |
|
|
935 | downheap (heap, N, k); |
380 | } |
936 | } |
381 | |
937 | |
382 | /*****************************************************************************/ |
938 | /*****************************************************************************/ |
383 | |
939 | |
384 | typedef struct |
940 | typedef struct |
385 | { |
941 | { |
386 | struct ev_signal *head; |
942 | WL head; |
387 | sig_atomic_t volatile gotsig; |
943 | EV_ATOMIC_T gotsig; |
388 | } ANSIG; |
944 | } ANSIG; |
389 | |
945 | |
390 | static ANSIG *signals; |
946 | static ANSIG *signals; |
391 | static int signalmax; |
947 | static int signalmax; |
392 | |
948 | |
393 | static int sigpipe [2]; |
949 | static EV_ATOMIC_T gotsig; |
394 | static sig_atomic_t volatile gotsig; |
|
|
395 | static struct ev_io sigev; |
|
|
396 | |
950 | |
397 | static void |
951 | void inline_size |
398 | signals_init (ANSIG *base, int count) |
952 | signals_init (ANSIG *base, int count) |
399 | { |
953 | { |
400 | while (count--) |
954 | while (count--) |
401 | { |
955 | { |
402 | base->head = 0; |
956 | base->head = 0; |
… | |
… | |
404 | |
958 | |
405 | ++base; |
959 | ++base; |
406 | } |
960 | } |
407 | } |
961 | } |
408 | |
962 | |
|
|
963 | /*****************************************************************************/ |
|
|
964 | |
|
|
965 | void inline_speed |
|
|
966 | fd_intern (int fd) |
|
|
967 | { |
|
|
968 | #ifdef _WIN32 |
|
|
969 | int arg = 1; |
|
|
970 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
971 | #else |
|
|
972 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
973 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
974 | #endif |
|
|
975 | } |
|
|
976 | |
|
|
977 | static void noinline |
|
|
978 | evpipe_init (EV_P) |
|
|
979 | { |
|
|
980 | if (!ev_is_active (&pipeev)) |
|
|
981 | { |
|
|
982 | #if EV_USE_EVENTFD |
|
|
983 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
984 | { |
|
|
985 | evpipe [0] = -1; |
|
|
986 | fd_intern (evfd); |
|
|
987 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
988 | } |
|
|
989 | else |
|
|
990 | #endif |
|
|
991 | { |
|
|
992 | while (pipe (evpipe)) |
|
|
993 | syserr ("(libev) error creating signal/async pipe"); |
|
|
994 | |
|
|
995 | fd_intern (evpipe [0]); |
|
|
996 | fd_intern (evpipe [1]); |
|
|
997 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
998 | } |
|
|
999 | |
|
|
1000 | ev_io_start (EV_A_ &pipeev); |
|
|
1001 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1002 | } |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | void inline_size |
|
|
1006 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1007 | { |
|
|
1008 | if (!*flag) |
|
|
1009 | { |
|
|
1010 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1011 | |
|
|
1012 | *flag = 1; |
|
|
1013 | |
|
|
1014 | #if EV_USE_EVENTFD |
|
|
1015 | if (evfd >= 0) |
|
|
1016 | { |
|
|
1017 | uint64_t counter = 1; |
|
|
1018 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1019 | } |
|
|
1020 | else |
|
|
1021 | #endif |
|
|
1022 | write (evpipe [1], &old_errno, 1); |
|
|
1023 | |
|
|
1024 | errno = old_errno; |
|
|
1025 | } |
|
|
1026 | } |
|
|
1027 | |
409 | static void |
1028 | static void |
|
|
1029 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1030 | { |
|
|
1031 | #if EV_USE_EVENTFD |
|
|
1032 | if (evfd >= 0) |
|
|
1033 | { |
|
|
1034 | uint64_t counter; |
|
|
1035 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1036 | } |
|
|
1037 | else |
|
|
1038 | #endif |
|
|
1039 | { |
|
|
1040 | char dummy; |
|
|
1041 | read (evpipe [0], &dummy, 1); |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1045 | { |
|
|
1046 | int signum; |
|
|
1047 | gotsig = 0; |
|
|
1048 | |
|
|
1049 | for (signum = signalmax; signum--; ) |
|
|
1050 | if (signals [signum].gotsig) |
|
|
1051 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | #if EV_ASYNC_ENABLE |
|
|
1055 | if (gotasync) |
|
|
1056 | { |
|
|
1057 | int i; |
|
|
1058 | gotasync = 0; |
|
|
1059 | |
|
|
1060 | for (i = asynccnt; i--; ) |
|
|
1061 | if (asyncs [i]->sent) |
|
|
1062 | { |
|
|
1063 | asyncs [i]->sent = 0; |
|
|
1064 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1065 | } |
|
|
1066 | } |
|
|
1067 | #endif |
|
|
1068 | } |
|
|
1069 | |
|
|
1070 | /*****************************************************************************/ |
|
|
1071 | |
|
|
1072 | static void |
410 | sighandler (int signum) |
1073 | ev_sighandler (int signum) |
411 | { |
1074 | { |
|
|
1075 | #if EV_MULTIPLICITY |
|
|
1076 | struct ev_loop *loop = &default_loop_struct; |
|
|
1077 | #endif |
|
|
1078 | |
|
|
1079 | #if _WIN32 |
|
|
1080 | signal (signum, ev_sighandler); |
|
|
1081 | #endif |
|
|
1082 | |
412 | signals [signum - 1].gotsig = 1; |
1083 | signals [signum - 1].gotsig = 1; |
413 | |
1084 | evpipe_write (EV_A_ &gotsig); |
414 | if (!gotsig) |
|
|
415 | { |
|
|
416 | gotsig = 1; |
|
|
417 | write (sigpipe [1], &signum, 1); |
|
|
418 | } |
|
|
419 | } |
1085 | } |
420 | |
1086 | |
421 | static void |
1087 | void noinline |
422 | sigcb (struct ev_io *iow, int revents) |
1088 | ev_feed_signal_event (EV_P_ int signum) |
423 | { |
1089 | { |
424 | struct ev_signal *w; |
1090 | WL w; |
|
|
1091 | |
|
|
1092 | #if EV_MULTIPLICITY |
|
|
1093 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1094 | #endif |
|
|
1095 | |
425 | int signum; |
1096 | --signum; |
426 | |
1097 | |
427 | read (sigpipe [0], &revents, 1); |
1098 | if (signum < 0 || signum >= signalmax) |
428 | gotsig = 0; |
1099 | return; |
429 | |
1100 | |
430 | for (signum = signalmax; signum--; ) |
|
|
431 | if (signals [signum].gotsig) |
|
|
432 | { |
|
|
433 | signals [signum].gotsig = 0; |
1101 | signals [signum].gotsig = 0; |
434 | |
1102 | |
435 | for (w = signals [signum].head; w; w = w->next) |
1103 | for (w = signals [signum].head; w; w = w->next) |
436 | event ((W)w, EV_SIGNAL); |
1104 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
437 | } |
|
|
438 | } |
|
|
439 | |
|
|
440 | static void |
|
|
441 | siginit (void) |
|
|
442 | { |
|
|
443 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
444 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
445 | |
|
|
446 | /* rather than sort out wether we really need nb, set it */ |
|
|
447 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
448 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
449 | |
|
|
450 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
451 | ev_io_start (&sigev); |
|
|
452 | } |
1105 | } |
453 | |
1106 | |
454 | /*****************************************************************************/ |
1107 | /*****************************************************************************/ |
455 | |
1108 | |
456 | static struct ev_idle **idles; |
1109 | static WL childs [EV_PID_HASHSIZE]; |
457 | static int idlemax, idlecnt; |
|
|
458 | |
1110 | |
459 | static struct ev_prepare **prepares; |
1111 | #ifndef _WIN32 |
460 | static int preparemax, preparecnt; |
|
|
461 | |
1112 | |
462 | static struct ev_check **checks; |
|
|
463 | static int checkmax, checkcnt; |
|
|
464 | |
|
|
465 | /*****************************************************************************/ |
|
|
466 | |
|
|
467 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
468 | static struct ev_signal childev; |
1113 | static ev_signal childev; |
|
|
1114 | |
|
|
1115 | #ifndef WIFCONTINUED |
|
|
1116 | # define WIFCONTINUED(status) 0 |
|
|
1117 | #endif |
|
|
1118 | |
|
|
1119 | void inline_speed |
|
|
1120 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1121 | { |
|
|
1122 | ev_child *w; |
|
|
1123 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1124 | |
|
|
1125 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1126 | { |
|
|
1127 | if ((w->pid == pid || !w->pid) |
|
|
1128 | && (!traced || (w->flags & 1))) |
|
|
1129 | { |
|
|
1130 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1131 | w->rpid = pid; |
|
|
1132 | w->rstatus = status; |
|
|
1133 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1134 | } |
|
|
1135 | } |
|
|
1136 | } |
469 | |
1137 | |
470 | #ifndef WCONTINUED |
1138 | #ifndef WCONTINUED |
471 | # define WCONTINUED 0 |
1139 | # define WCONTINUED 0 |
472 | #endif |
1140 | #endif |
473 | |
1141 | |
474 | static void |
1142 | static void |
475 | childcb (struct ev_signal *sw, int revents) |
1143 | childcb (EV_P_ ev_signal *sw, int revents) |
476 | { |
1144 | { |
477 | struct ev_child *w; |
|
|
478 | int pid, status; |
1145 | int pid, status; |
479 | |
1146 | |
|
|
1147 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
480 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1148 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
481 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1149 | if (!WCONTINUED |
482 | if (w->pid == pid || !w->pid) |
1150 | || errno != EINVAL |
483 | { |
1151 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
484 | w->status = status; |
1152 | return; |
485 | event ((W)w, EV_CHILD); |
1153 | |
486 | } |
1154 | /* make sure we are called again until all children have been reaped */ |
|
|
1155 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1156 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1157 | |
|
|
1158 | child_reap (EV_A_ pid, pid, status); |
|
|
1159 | if (EV_PID_HASHSIZE > 1) |
|
|
1160 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
487 | } |
1161 | } |
|
|
1162 | |
|
|
1163 | #endif |
488 | |
1164 | |
489 | /*****************************************************************************/ |
1165 | /*****************************************************************************/ |
490 | |
1166 | |
|
|
1167 | #if EV_USE_PORT |
|
|
1168 | # include "ev_port.c" |
|
|
1169 | #endif |
491 | #if EV_USE_KQUEUE |
1170 | #if EV_USE_KQUEUE |
492 | # include "ev_kqueue.c" |
1171 | # include "ev_kqueue.c" |
493 | #endif |
1172 | #endif |
494 | #if EV_USE_EPOLL |
1173 | #if EV_USE_EPOLL |
495 | # include "ev_epoll.c" |
1174 | # include "ev_epoll.c" |
… | |
… | |
511 | ev_version_minor (void) |
1190 | ev_version_minor (void) |
512 | { |
1191 | { |
513 | return EV_VERSION_MINOR; |
1192 | return EV_VERSION_MINOR; |
514 | } |
1193 | } |
515 | |
1194 | |
516 | /* return true if we are running with elevated privileges and ignore env variables */ |
1195 | /* return true if we are running with elevated privileges and should ignore env variables */ |
517 | static int |
1196 | int inline_size |
518 | enable_secure () |
1197 | enable_secure (void) |
519 | { |
1198 | { |
|
|
1199 | #ifdef _WIN32 |
|
|
1200 | return 0; |
|
|
1201 | #else |
520 | return getuid () != geteuid () |
1202 | return getuid () != geteuid () |
521 | || getgid () != getegid (); |
1203 | || getgid () != getegid (); |
|
|
1204 | #endif |
522 | } |
1205 | } |
523 | |
1206 | |
524 | int ev_init (int methods) |
1207 | unsigned int |
|
|
1208 | ev_supported_backends (void) |
525 | { |
1209 | { |
526 | if (!ev_method) |
1210 | unsigned int flags = 0; |
|
|
1211 | |
|
|
1212 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1213 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1214 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1215 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1216 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1217 | |
|
|
1218 | return flags; |
|
|
1219 | } |
|
|
1220 | |
|
|
1221 | unsigned int |
|
|
1222 | ev_recommended_backends (void) |
|
|
1223 | { |
|
|
1224 | unsigned int flags = ev_supported_backends (); |
|
|
1225 | |
|
|
1226 | #ifndef __NetBSD__ |
|
|
1227 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1228 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1229 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1230 | #endif |
|
|
1231 | #ifdef __APPLE__ |
|
|
1232 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1233 | flags &= ~EVBACKEND_POLL; |
|
|
1234 | #endif |
|
|
1235 | |
|
|
1236 | return flags; |
|
|
1237 | } |
|
|
1238 | |
|
|
1239 | unsigned int |
|
|
1240 | ev_embeddable_backends (void) |
|
|
1241 | { |
|
|
1242 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1243 | |
|
|
1244 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1245 | /* please fix it and tell me how to detect the fix */ |
|
|
1246 | flags &= ~EVBACKEND_EPOLL; |
|
|
1247 | |
|
|
1248 | return flags; |
|
|
1249 | } |
|
|
1250 | |
|
|
1251 | unsigned int |
|
|
1252 | ev_backend (EV_P) |
|
|
1253 | { |
|
|
1254 | return backend; |
|
|
1255 | } |
|
|
1256 | |
|
|
1257 | unsigned int |
|
|
1258 | ev_loop_count (EV_P) |
|
|
1259 | { |
|
|
1260 | return loop_count; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | void |
|
|
1264 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1265 | { |
|
|
1266 | io_blocktime = interval; |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | void |
|
|
1270 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1271 | { |
|
|
1272 | timeout_blocktime = interval; |
|
|
1273 | } |
|
|
1274 | |
|
|
1275 | static void noinline |
|
|
1276 | loop_init (EV_P_ unsigned int flags) |
|
|
1277 | { |
|
|
1278 | if (!backend) |
527 | { |
1279 | { |
528 | #if EV_USE_MONOTONIC |
1280 | #if EV_USE_MONOTONIC |
529 | { |
1281 | { |
530 | struct timespec ts; |
1282 | struct timespec ts; |
531 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1283 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
532 | have_monotonic = 1; |
1284 | have_monotonic = 1; |
533 | } |
1285 | } |
534 | #endif |
1286 | #endif |
535 | |
1287 | |
536 | ev_now = ev_time (); |
1288 | ev_rt_now = ev_time (); |
537 | now = get_clock (); |
1289 | mn_now = get_clock (); |
538 | now_floor = now; |
1290 | now_floor = mn_now; |
539 | diff = ev_now - now; |
1291 | rtmn_diff = ev_rt_now - mn_now; |
540 | |
1292 | |
541 | if (pipe (sigpipe)) |
1293 | io_blocktime = 0.; |
542 | return 0; |
1294 | timeout_blocktime = 0.; |
|
|
1295 | backend = 0; |
|
|
1296 | backend_fd = -1; |
|
|
1297 | gotasync = 0; |
|
|
1298 | #if EV_USE_INOTIFY |
|
|
1299 | fs_fd = -2; |
|
|
1300 | #endif |
543 | |
1301 | |
544 | if (methods == EVMETHOD_AUTO) |
1302 | /* pid check not overridable via env */ |
545 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
1303 | #ifndef _WIN32 |
|
|
1304 | if (flags & EVFLAG_FORKCHECK) |
|
|
1305 | curpid = getpid (); |
|
|
1306 | #endif |
|
|
1307 | |
|
|
1308 | if (!(flags & EVFLAG_NOENV) |
|
|
1309 | && !enable_secure () |
|
|
1310 | && getenv ("LIBEV_FLAGS")) |
546 | methods = atoi (getenv ("LIBEV_METHODS")); |
1311 | flags = atoi (getenv ("LIBEV_FLAGS")); |
547 | else |
|
|
548 | methods = EVMETHOD_ANY; |
|
|
549 | |
1312 | |
550 | ev_method = 0; |
1313 | if (!(flags & 0x0000ffffU)) |
|
|
1314 | flags |= ev_recommended_backends (); |
|
|
1315 | |
|
|
1316 | #if EV_USE_PORT |
|
|
1317 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1318 | #endif |
551 | #if EV_USE_KQUEUE |
1319 | #if EV_USE_KQUEUE |
552 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
1320 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
553 | #endif |
1321 | #endif |
554 | #if EV_USE_EPOLL |
1322 | #if EV_USE_EPOLL |
555 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
1323 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
556 | #endif |
1324 | #endif |
557 | #if EV_USE_POLL |
1325 | #if EV_USE_POLL |
558 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
1326 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
559 | #endif |
1327 | #endif |
560 | #if EV_USE_SELECT |
1328 | #if EV_USE_SELECT |
561 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
1329 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
562 | #endif |
1330 | #endif |
563 | |
1331 | |
564 | if (ev_method) |
1332 | ev_init (&pipeev, pipecb); |
|
|
1333 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1334 | } |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | static void noinline |
|
|
1338 | loop_destroy (EV_P) |
|
|
1339 | { |
|
|
1340 | int i; |
|
|
1341 | |
|
|
1342 | if (ev_is_active (&pipeev)) |
|
|
1343 | { |
|
|
1344 | ev_ref (EV_A); /* signal watcher */ |
|
|
1345 | ev_io_stop (EV_A_ &pipeev); |
|
|
1346 | |
|
|
1347 | #if EV_USE_EVENTFD |
|
|
1348 | if (evfd >= 0) |
|
|
1349 | close (evfd); |
|
|
1350 | #endif |
|
|
1351 | |
|
|
1352 | if (evpipe [0] >= 0) |
565 | { |
1353 | { |
566 | ev_watcher_init (&sigev, sigcb); |
1354 | close (evpipe [0]); |
567 | siginit (); |
1355 | close (evpipe [1]); |
|
|
1356 | } |
|
|
1357 | } |
568 | |
1358 | |
|
|
1359 | #if EV_USE_INOTIFY |
|
|
1360 | if (fs_fd >= 0) |
|
|
1361 | close (fs_fd); |
|
|
1362 | #endif |
|
|
1363 | |
|
|
1364 | if (backend_fd >= 0) |
|
|
1365 | close (backend_fd); |
|
|
1366 | |
|
|
1367 | #if EV_USE_PORT |
|
|
1368 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1369 | #endif |
|
|
1370 | #if EV_USE_KQUEUE |
|
|
1371 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1372 | #endif |
|
|
1373 | #if EV_USE_EPOLL |
|
|
1374 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1375 | #endif |
|
|
1376 | #if EV_USE_POLL |
|
|
1377 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1378 | #endif |
|
|
1379 | #if EV_USE_SELECT |
|
|
1380 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1381 | #endif |
|
|
1382 | |
|
|
1383 | for (i = NUMPRI; i--; ) |
|
|
1384 | { |
|
|
1385 | array_free (pending, [i]); |
|
|
1386 | #if EV_IDLE_ENABLE |
|
|
1387 | array_free (idle, [i]); |
|
|
1388 | #endif |
|
|
1389 | } |
|
|
1390 | |
|
|
1391 | ev_free (anfds); anfdmax = 0; |
|
|
1392 | |
|
|
1393 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1394 | array_free (fdchange, EMPTY); |
|
|
1395 | array_free (timer, EMPTY); |
|
|
1396 | #if EV_PERIODIC_ENABLE |
|
|
1397 | array_free (periodic, EMPTY); |
|
|
1398 | #endif |
|
|
1399 | #if EV_FORK_ENABLE |
|
|
1400 | array_free (fork, EMPTY); |
|
|
1401 | #endif |
|
|
1402 | array_free (prepare, EMPTY); |
|
|
1403 | array_free (check, EMPTY); |
|
|
1404 | #if EV_ASYNC_ENABLE |
|
|
1405 | array_free (async, EMPTY); |
|
|
1406 | #endif |
|
|
1407 | |
|
|
1408 | backend = 0; |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | #if EV_USE_INOTIFY |
|
|
1412 | void inline_size infy_fork (EV_P); |
|
|
1413 | #endif |
|
|
1414 | |
|
|
1415 | void inline_size |
|
|
1416 | loop_fork (EV_P) |
|
|
1417 | { |
|
|
1418 | #if EV_USE_PORT |
|
|
1419 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1420 | #endif |
|
|
1421 | #if EV_USE_KQUEUE |
|
|
1422 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1423 | #endif |
|
|
1424 | #if EV_USE_EPOLL |
|
|
1425 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1426 | #endif |
|
|
1427 | #if EV_USE_INOTIFY |
|
|
1428 | infy_fork (EV_A); |
|
|
1429 | #endif |
|
|
1430 | |
|
|
1431 | if (ev_is_active (&pipeev)) |
|
|
1432 | { |
|
|
1433 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1434 | /* while we modify the fd vars */ |
|
|
1435 | gotsig = 1; |
|
|
1436 | #if EV_ASYNC_ENABLE |
|
|
1437 | gotasync = 1; |
|
|
1438 | #endif |
|
|
1439 | |
|
|
1440 | ev_ref (EV_A); |
|
|
1441 | ev_io_stop (EV_A_ &pipeev); |
|
|
1442 | |
|
|
1443 | #if EV_USE_EVENTFD |
|
|
1444 | if (evfd >= 0) |
|
|
1445 | close (evfd); |
|
|
1446 | #endif |
|
|
1447 | |
|
|
1448 | if (evpipe [0] >= 0) |
|
|
1449 | { |
|
|
1450 | close (evpipe [0]); |
|
|
1451 | close (evpipe [1]); |
|
|
1452 | } |
|
|
1453 | |
|
|
1454 | evpipe_init (EV_A); |
|
|
1455 | /* now iterate over everything, in case we missed something */ |
|
|
1456 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1457 | } |
|
|
1458 | |
|
|
1459 | postfork = 0; |
|
|
1460 | } |
|
|
1461 | |
|
|
1462 | #if EV_MULTIPLICITY |
|
|
1463 | struct ev_loop * |
|
|
1464 | ev_loop_new (unsigned int flags) |
|
|
1465 | { |
|
|
1466 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1467 | |
|
|
1468 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1469 | |
|
|
1470 | loop_init (EV_A_ flags); |
|
|
1471 | |
|
|
1472 | if (ev_backend (EV_A)) |
|
|
1473 | return loop; |
|
|
1474 | |
|
|
1475 | return 0; |
|
|
1476 | } |
|
|
1477 | |
|
|
1478 | void |
|
|
1479 | ev_loop_destroy (EV_P) |
|
|
1480 | { |
|
|
1481 | loop_destroy (EV_A); |
|
|
1482 | ev_free (loop); |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | void |
|
|
1486 | ev_loop_fork (EV_P) |
|
|
1487 | { |
|
|
1488 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1489 | } |
|
|
1490 | #endif |
|
|
1491 | |
|
|
1492 | #if EV_MULTIPLICITY |
|
|
1493 | struct ev_loop * |
|
|
1494 | ev_default_loop_init (unsigned int flags) |
|
|
1495 | #else |
|
|
1496 | int |
|
|
1497 | ev_default_loop (unsigned int flags) |
|
|
1498 | #endif |
|
|
1499 | { |
|
|
1500 | if (!ev_default_loop_ptr) |
|
|
1501 | { |
|
|
1502 | #if EV_MULTIPLICITY |
|
|
1503 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1504 | #else |
|
|
1505 | ev_default_loop_ptr = 1; |
|
|
1506 | #endif |
|
|
1507 | |
|
|
1508 | loop_init (EV_A_ flags); |
|
|
1509 | |
|
|
1510 | if (ev_backend (EV_A)) |
|
|
1511 | { |
|
|
1512 | #ifndef _WIN32 |
569 | ev_signal_init (&childev, childcb, SIGCHLD); |
1513 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1514 | ev_set_priority (&childev, EV_MAXPRI); |
570 | ev_signal_start (&childev); |
1515 | ev_signal_start (EV_A_ &childev); |
|
|
1516 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1517 | #endif |
571 | } |
1518 | } |
|
|
1519 | else |
|
|
1520 | ev_default_loop_ptr = 0; |
572 | } |
1521 | } |
573 | |
1522 | |
574 | return ev_method; |
1523 | return ev_default_loop_ptr; |
|
|
1524 | } |
|
|
1525 | |
|
|
1526 | void |
|
|
1527 | ev_default_destroy (void) |
|
|
1528 | { |
|
|
1529 | #if EV_MULTIPLICITY |
|
|
1530 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1531 | #endif |
|
|
1532 | |
|
|
1533 | #ifndef _WIN32 |
|
|
1534 | ev_ref (EV_A); /* child watcher */ |
|
|
1535 | ev_signal_stop (EV_A_ &childev); |
|
|
1536 | #endif |
|
|
1537 | |
|
|
1538 | loop_destroy (EV_A); |
|
|
1539 | } |
|
|
1540 | |
|
|
1541 | void |
|
|
1542 | ev_default_fork (void) |
|
|
1543 | { |
|
|
1544 | #if EV_MULTIPLICITY |
|
|
1545 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1546 | #endif |
|
|
1547 | |
|
|
1548 | if (backend) |
|
|
1549 | postfork = 1; /* must be in line with ev_loop_fork */ |
575 | } |
1550 | } |
576 | |
1551 | |
577 | /*****************************************************************************/ |
1552 | /*****************************************************************************/ |
578 | |
1553 | |
579 | void |
1554 | void |
580 | ev_fork_prepare (void) |
1555 | ev_invoke (EV_P_ void *w, int revents) |
581 | { |
1556 | { |
582 | /* nop */ |
1557 | EV_CB_INVOKE ((W)w, revents); |
583 | } |
1558 | } |
584 | |
1559 | |
585 | void |
1560 | void inline_speed |
586 | ev_fork_parent (void) |
|
|
587 | { |
|
|
588 | /* nop */ |
|
|
589 | } |
|
|
590 | |
|
|
591 | void |
|
|
592 | ev_fork_child (void) |
|
|
593 | { |
|
|
594 | #if EV_USE_EPOLL |
|
|
595 | if (ev_method == EVMETHOD_EPOLL) |
|
|
596 | epoll_postfork_child (); |
|
|
597 | #endif |
|
|
598 | |
|
|
599 | ev_io_stop (&sigev); |
|
|
600 | close (sigpipe [0]); |
|
|
601 | close (sigpipe [1]); |
|
|
602 | pipe (sigpipe); |
|
|
603 | siginit (); |
|
|
604 | } |
|
|
605 | |
|
|
606 | /*****************************************************************************/ |
|
|
607 | |
|
|
608 | static void |
|
|
609 | call_pending (void) |
1561 | call_pending (EV_P) |
610 | { |
1562 | { |
611 | int pri; |
1563 | int pri; |
612 | |
1564 | |
613 | for (pri = NUMPRI; pri--; ) |
1565 | for (pri = NUMPRI; pri--; ) |
614 | while (pendingcnt [pri]) |
1566 | while (pendingcnt [pri]) |
615 | { |
1567 | { |
616 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1568 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
617 | |
1569 | |
618 | if (p->w) |
1570 | if (expect_true (p->w)) |
619 | { |
1571 | { |
|
|
1572 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1573 | |
620 | p->w->pending = 0; |
1574 | p->w->pending = 0; |
621 | p->w->cb (p->w, p->events); |
1575 | EV_CB_INVOKE (p->w, p->events); |
622 | } |
1576 | } |
623 | } |
1577 | } |
624 | } |
1578 | } |
625 | |
1579 | |
626 | static void |
1580 | #if EV_IDLE_ENABLE |
627 | timers_reify (void) |
1581 | void inline_size |
|
|
1582 | idle_reify (EV_P) |
628 | { |
1583 | { |
629 | while (timercnt && timers [0]->at <= now) |
1584 | if (expect_false (idleall)) |
|
|
1585 | { |
|
|
1586 | int pri; |
|
|
1587 | |
|
|
1588 | for (pri = NUMPRI; pri--; ) |
|
|
1589 | { |
|
|
1590 | if (pendingcnt [pri]) |
|
|
1591 | break; |
|
|
1592 | |
|
|
1593 | if (idlecnt [pri]) |
|
|
1594 | { |
|
|
1595 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1596 | break; |
|
|
1597 | } |
|
|
1598 | } |
630 | { |
1599 | } |
631 | struct ev_timer *w = timers [0]; |
1600 | } |
|
|
1601 | #endif |
|
|
1602 | |
|
|
1603 | void inline_size |
|
|
1604 | timers_reify (EV_P) |
|
|
1605 | { |
|
|
1606 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
1607 | { |
|
|
1608 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1609 | |
|
|
1610 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
632 | |
1611 | |
633 | /* first reschedule or stop timer */ |
1612 | /* first reschedule or stop timer */ |
634 | if (w->repeat) |
1613 | if (w->repeat) |
635 | { |
1614 | { |
|
|
1615 | ev_at (w) += w->repeat; |
|
|
1616 | if (ev_at (w) < mn_now) |
|
|
1617 | ev_at (w) = mn_now; |
|
|
1618 | |
636 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1619 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
637 | w->at = now + w->repeat; |
1620 | |
|
|
1621 | ANHE_at_set (timers [HEAP0]); |
638 | downheap ((WT *)timers, timercnt, 0); |
1622 | downheap (timers, timercnt, HEAP0); |
639 | } |
1623 | } |
640 | else |
1624 | else |
641 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1625 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
642 | |
1626 | |
643 | event ((W)w, EV_TIMEOUT); |
1627 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
644 | } |
1628 | } |
645 | } |
1629 | } |
646 | |
1630 | |
647 | static void |
1631 | #if EV_PERIODIC_ENABLE |
|
|
1632 | void inline_size |
648 | periodics_reify (void) |
1633 | periodics_reify (EV_P) |
649 | { |
1634 | { |
650 | while (periodiccnt && periodics [0]->at <= ev_now) |
1635 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
651 | { |
1636 | { |
652 | struct ev_periodic *w = periodics [0]; |
1637 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1638 | |
|
|
1639 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
653 | |
1640 | |
654 | /* first reschedule or stop timer */ |
1641 | /* first reschedule or stop timer */ |
655 | if (w->interval) |
1642 | if (w->reschedule_cb) |
656 | { |
1643 | { |
657 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1644 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
658 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1645 | |
|
|
1646 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1647 | |
|
|
1648 | ANHE_at_set (periodics [HEAP0]); |
659 | downheap ((WT *)periodics, periodiccnt, 0); |
1649 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1650 | } |
|
|
1651 | else if (w->interval) |
|
|
1652 | { |
|
|
1653 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1654 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1655 | /* this might happen because of floating point inexactness */ |
|
|
1656 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1657 | { |
|
|
1658 | ev_at (w) += w->interval; |
|
|
1659 | |
|
|
1660 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1661 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1662 | /* has effectively asked to get triggered more often than possible */ |
|
|
1663 | if (ev_at (w) < ev_rt_now) |
|
|
1664 | ev_at (w) = ev_rt_now; |
|
|
1665 | } |
|
|
1666 | |
|
|
1667 | ANHE_at_set (periodics [HEAP0]); |
|
|
1668 | downheap (periodics, periodiccnt, HEAP0); |
660 | } |
1669 | } |
661 | else |
1670 | else |
662 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1671 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
663 | |
1672 | |
664 | event ((W)w, EV_PERIODIC); |
1673 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
665 | } |
1674 | } |
666 | } |
1675 | } |
667 | |
1676 | |
668 | static void |
1677 | static void noinline |
669 | periodics_reschedule (ev_tstamp diff) |
1678 | periodics_reschedule (EV_P) |
670 | { |
1679 | { |
671 | int i; |
1680 | int i; |
672 | |
1681 | |
673 | /* adjust periodics after time jump */ |
1682 | /* adjust periodics after time jump */ |
|
|
1683 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
1684 | { |
|
|
1685 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
1686 | |
|
|
1687 | if (w->reschedule_cb) |
|
|
1688 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1689 | else if (w->interval) |
|
|
1690 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1691 | |
|
|
1692 | ANHE_at_set (periodics [i]); |
|
|
1693 | } |
|
|
1694 | |
|
|
1695 | /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ |
|
|
1696 | /* also, this is easy and corretc for both 2-heaps and 4-heaps */ |
674 | for (i = 0; i < periodiccnt; ++i) |
1697 | for (i = 0; i < periodiccnt; ++i) |
675 | { |
1698 | upheap (periodics, i + HEAP0); |
676 | struct ev_periodic *w = periodics [i]; |
1699 | } |
|
|
1700 | #endif |
677 | |
1701 | |
678 | if (w->interval) |
1702 | void inline_speed |
|
|
1703 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1704 | { |
|
|
1705 | int i; |
|
|
1706 | |
|
|
1707 | #if EV_USE_MONOTONIC |
|
|
1708 | if (expect_true (have_monotonic)) |
|
|
1709 | { |
|
|
1710 | ev_tstamp odiff = rtmn_diff; |
|
|
1711 | |
|
|
1712 | mn_now = get_clock (); |
|
|
1713 | |
|
|
1714 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1715 | /* interpolate in the meantime */ |
|
|
1716 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
679 | { |
1717 | { |
680 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1718 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1719 | return; |
|
|
1720 | } |
681 | |
1721 | |
682 | if (fabs (diff) >= 1e-4) |
1722 | now_floor = mn_now; |
|
|
1723 | ev_rt_now = ev_time (); |
|
|
1724 | |
|
|
1725 | /* loop a few times, before making important decisions. |
|
|
1726 | * on the choice of "4": one iteration isn't enough, |
|
|
1727 | * in case we get preempted during the calls to |
|
|
1728 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1729 | * to succeed in that case, though. and looping a few more times |
|
|
1730 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1731 | * in the unlikely event of having been preempted here. |
|
|
1732 | */ |
|
|
1733 | for (i = 4; --i; ) |
|
|
1734 | { |
|
|
1735 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1736 | |
|
|
1737 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1738 | return; /* all is well */ |
|
|
1739 | |
|
|
1740 | ev_rt_now = ev_time (); |
|
|
1741 | mn_now = get_clock (); |
|
|
1742 | now_floor = mn_now; |
|
|
1743 | } |
|
|
1744 | |
|
|
1745 | # if EV_PERIODIC_ENABLE |
|
|
1746 | periodics_reschedule (EV_A); |
|
|
1747 | # endif |
|
|
1748 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1749 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1750 | } |
|
|
1751 | else |
|
|
1752 | #endif |
|
|
1753 | { |
|
|
1754 | ev_rt_now = ev_time (); |
|
|
1755 | |
|
|
1756 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1757 | { |
|
|
1758 | #if EV_PERIODIC_ENABLE |
|
|
1759 | periodics_reschedule (EV_A); |
|
|
1760 | #endif |
|
|
1761 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1762 | for (i = 0; i < timercnt; ++i) |
683 | { |
1763 | { |
684 | ev_periodic_stop (w); |
1764 | ANHE *he = timers + i + HEAP0; |
685 | ev_periodic_start (w); |
1765 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
686 | |
1766 | ANHE_at_set (*he); |
687 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
688 | } |
1767 | } |
689 | } |
1768 | } |
690 | } |
|
|
691 | } |
|
|
692 | |
1769 | |
693 | static int |
|
|
694 | time_update_monotonic (void) |
|
|
695 | { |
|
|
696 | now = get_clock (); |
|
|
697 | |
|
|
698 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
699 | { |
|
|
700 | ev_now = now + diff; |
|
|
701 | return 0; |
|
|
702 | } |
|
|
703 | else |
|
|
704 | { |
|
|
705 | now_floor = now; |
|
|
706 | ev_now = ev_time (); |
|
|
707 | return 1; |
|
|
708 | } |
|
|
709 | } |
|
|
710 | |
|
|
711 | static void |
|
|
712 | time_update (void) |
|
|
713 | { |
|
|
714 | int i; |
|
|
715 | |
|
|
716 | #if EV_USE_MONOTONIC |
|
|
717 | if (expect_true (have_monotonic)) |
|
|
718 | { |
|
|
719 | if (time_update_monotonic ()) |
|
|
720 | { |
|
|
721 | ev_tstamp odiff = diff; |
|
|
722 | |
|
|
723 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
724 | { |
|
|
725 | diff = ev_now - now; |
|
|
726 | |
|
|
727 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
728 | return; /* all is well */ |
|
|
729 | |
|
|
730 | ev_now = ev_time (); |
|
|
731 | now = get_clock (); |
|
|
732 | now_floor = now; |
|
|
733 | } |
|
|
734 | |
|
|
735 | periodics_reschedule (diff - odiff); |
|
|
736 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
737 | } |
|
|
738 | } |
|
|
739 | else |
|
|
740 | #endif |
|
|
741 | { |
|
|
742 | ev_now = ev_time (); |
|
|
743 | |
|
|
744 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
745 | { |
|
|
746 | periodics_reschedule (ev_now - now); |
|
|
747 | |
|
|
748 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
749 | for (i = 0; i < timercnt; ++i) |
|
|
750 | timers [i]->at += diff; |
|
|
751 | } |
|
|
752 | |
|
|
753 | now = ev_now; |
1770 | mn_now = ev_rt_now; |
754 | } |
1771 | } |
755 | } |
1772 | } |
756 | |
1773 | |
757 | int ev_loop_done; |
1774 | void |
|
|
1775 | ev_ref (EV_P) |
|
|
1776 | { |
|
|
1777 | ++activecnt; |
|
|
1778 | } |
758 | |
1779 | |
|
|
1780 | void |
|
|
1781 | ev_unref (EV_P) |
|
|
1782 | { |
|
|
1783 | --activecnt; |
|
|
1784 | } |
|
|
1785 | |
|
|
1786 | static int loop_done; |
|
|
1787 | |
|
|
1788 | void |
759 | void ev_loop (int flags) |
1789 | ev_loop (EV_P_ int flags) |
760 | { |
1790 | { |
761 | double block; |
1791 | loop_done = EVUNLOOP_CANCEL; |
762 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1792 | |
|
|
1793 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
763 | |
1794 | |
764 | do |
1795 | do |
765 | { |
1796 | { |
|
|
1797 | #ifndef _WIN32 |
|
|
1798 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1799 | if (expect_false (getpid () != curpid)) |
|
|
1800 | { |
|
|
1801 | curpid = getpid (); |
|
|
1802 | postfork = 1; |
|
|
1803 | } |
|
|
1804 | #endif |
|
|
1805 | |
|
|
1806 | #if EV_FORK_ENABLE |
|
|
1807 | /* we might have forked, so queue fork handlers */ |
|
|
1808 | if (expect_false (postfork)) |
|
|
1809 | if (forkcnt) |
|
|
1810 | { |
|
|
1811 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1812 | call_pending (EV_A); |
|
|
1813 | } |
|
|
1814 | #endif |
|
|
1815 | |
766 | /* queue check watchers (and execute them) */ |
1816 | /* queue prepare watchers (and execute them) */ |
767 | if (expect_false (preparecnt)) |
1817 | if (expect_false (preparecnt)) |
768 | { |
1818 | { |
769 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1819 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
770 | call_pending (); |
1820 | call_pending (EV_A); |
771 | } |
1821 | } |
772 | |
1822 | |
|
|
1823 | if (expect_false (!activecnt)) |
|
|
1824 | break; |
|
|
1825 | |
|
|
1826 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1827 | if (expect_false (postfork)) |
|
|
1828 | loop_fork (EV_A); |
|
|
1829 | |
773 | /* update fd-related kernel structures */ |
1830 | /* update fd-related kernel structures */ |
774 | fd_reify (); |
1831 | fd_reify (EV_A); |
775 | |
1832 | |
776 | /* calculate blocking time */ |
1833 | /* calculate blocking time */ |
|
|
1834 | { |
|
|
1835 | ev_tstamp waittime = 0.; |
|
|
1836 | ev_tstamp sleeptime = 0.; |
777 | |
1837 | |
778 | /* we only need this for !monotonic clockor timers, but as we basically |
1838 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
779 | always have timers, we just calculate it always */ |
|
|
780 | #if EV_USE_MONOTONIC |
|
|
781 | if (expect_true (have_monotonic)) |
|
|
782 | time_update_monotonic (); |
|
|
783 | else |
|
|
784 | #endif |
|
|
785 | { |
1839 | { |
786 | ev_now = ev_time (); |
1840 | /* update time to cancel out callback processing overhead */ |
787 | now = ev_now; |
1841 | time_update (EV_A_ 1e100); |
788 | } |
|
|
789 | |
1842 | |
790 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
791 | block = 0.; |
|
|
792 | else |
|
|
793 | { |
|
|
794 | block = MAX_BLOCKTIME; |
1843 | waittime = MAX_BLOCKTIME; |
795 | |
1844 | |
796 | if (timercnt) |
1845 | if (timercnt) |
797 | { |
1846 | { |
798 | ev_tstamp to = timers [0]->at - now + method_fudge; |
1847 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
799 | if (block > to) block = to; |
1848 | if (waittime > to) waittime = to; |
800 | } |
1849 | } |
801 | |
1850 | |
|
|
1851 | #if EV_PERIODIC_ENABLE |
802 | if (periodiccnt) |
1852 | if (periodiccnt) |
803 | { |
1853 | { |
804 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1854 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
805 | if (block > to) block = to; |
1855 | if (waittime > to) waittime = to; |
806 | } |
1856 | } |
|
|
1857 | #endif |
807 | |
1858 | |
808 | if (block < 0.) block = 0.; |
1859 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1860 | waittime = timeout_blocktime; |
|
|
1861 | |
|
|
1862 | sleeptime = waittime - backend_fudge; |
|
|
1863 | |
|
|
1864 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1865 | sleeptime = io_blocktime; |
|
|
1866 | |
|
|
1867 | if (sleeptime) |
|
|
1868 | { |
|
|
1869 | ev_sleep (sleeptime); |
|
|
1870 | waittime -= sleeptime; |
|
|
1871 | } |
809 | } |
1872 | } |
810 | |
1873 | |
811 | method_poll (block); |
1874 | ++loop_count; |
|
|
1875 | backend_poll (EV_A_ waittime); |
812 | |
1876 | |
813 | /* update ev_now, do magic */ |
1877 | /* update ev_rt_now, do magic */ |
814 | time_update (); |
1878 | time_update (EV_A_ waittime + sleeptime); |
|
|
1879 | } |
815 | |
1880 | |
816 | /* queue pending timers and reschedule them */ |
1881 | /* queue pending timers and reschedule them */ |
817 | timers_reify (); /* relative timers called last */ |
1882 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1883 | #if EV_PERIODIC_ENABLE |
818 | periodics_reify (); /* absolute timers called first */ |
1884 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1885 | #endif |
819 | |
1886 | |
|
|
1887 | #if EV_IDLE_ENABLE |
820 | /* queue idle watchers unless io or timers are pending */ |
1888 | /* queue idle watchers unless other events are pending */ |
821 | if (!pendingcnt) |
1889 | idle_reify (EV_A); |
822 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1890 | #endif |
823 | |
1891 | |
824 | /* queue check watchers, to be executed first */ |
1892 | /* queue check watchers, to be executed first */ |
825 | if (checkcnt) |
1893 | if (expect_false (checkcnt)) |
826 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1894 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
827 | |
1895 | |
828 | call_pending (); |
1896 | call_pending (EV_A); |
829 | } |
1897 | } |
830 | while (!ev_loop_done); |
1898 | while (expect_true ( |
|
|
1899 | activecnt |
|
|
1900 | && !loop_done |
|
|
1901 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1902 | )); |
831 | |
1903 | |
832 | if (ev_loop_done != 2) |
1904 | if (loop_done == EVUNLOOP_ONE) |
|
|
1905 | loop_done = EVUNLOOP_CANCEL; |
|
|
1906 | } |
|
|
1907 | |
|
|
1908 | void |
|
|
1909 | ev_unloop (EV_P_ int how) |
|
|
1910 | { |
833 | ev_loop_done = 0; |
1911 | loop_done = how; |
834 | } |
1912 | } |
835 | |
1913 | |
836 | /*****************************************************************************/ |
1914 | /*****************************************************************************/ |
837 | |
1915 | |
838 | static void |
1916 | void inline_size |
839 | wlist_add (WL *head, WL elem) |
1917 | wlist_add (WL *head, WL elem) |
840 | { |
1918 | { |
841 | elem->next = *head; |
1919 | elem->next = *head; |
842 | *head = elem; |
1920 | *head = elem; |
843 | } |
1921 | } |
844 | |
1922 | |
845 | static void |
1923 | void inline_size |
846 | wlist_del (WL *head, WL elem) |
1924 | wlist_del (WL *head, WL elem) |
847 | { |
1925 | { |
848 | while (*head) |
1926 | while (*head) |
849 | { |
1927 | { |
850 | if (*head == elem) |
1928 | if (*head == elem) |
… | |
… | |
855 | |
1933 | |
856 | head = &(*head)->next; |
1934 | head = &(*head)->next; |
857 | } |
1935 | } |
858 | } |
1936 | } |
859 | |
1937 | |
860 | static void |
1938 | void inline_speed |
861 | ev_clear_pending (W w) |
1939 | clear_pending (EV_P_ W w) |
862 | { |
1940 | { |
863 | if (w->pending) |
1941 | if (w->pending) |
864 | { |
1942 | { |
865 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1943 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
866 | w->pending = 0; |
1944 | w->pending = 0; |
867 | } |
1945 | } |
868 | } |
1946 | } |
869 | |
1947 | |
870 | static void |
1948 | int |
|
|
1949 | ev_clear_pending (EV_P_ void *w) |
|
|
1950 | { |
|
|
1951 | W w_ = (W)w; |
|
|
1952 | int pending = w_->pending; |
|
|
1953 | |
|
|
1954 | if (expect_true (pending)) |
|
|
1955 | { |
|
|
1956 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1957 | w_->pending = 0; |
|
|
1958 | p->w = 0; |
|
|
1959 | return p->events; |
|
|
1960 | } |
|
|
1961 | else |
|
|
1962 | return 0; |
|
|
1963 | } |
|
|
1964 | |
|
|
1965 | void inline_size |
|
|
1966 | pri_adjust (EV_P_ W w) |
|
|
1967 | { |
|
|
1968 | int pri = w->priority; |
|
|
1969 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1970 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1971 | w->priority = pri; |
|
|
1972 | } |
|
|
1973 | |
|
|
1974 | void inline_speed |
871 | ev_start (W w, int active) |
1975 | ev_start (EV_P_ W w, int active) |
872 | { |
1976 | { |
873 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
1977 | pri_adjust (EV_A_ w); |
874 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
875 | |
|
|
876 | w->active = active; |
1978 | w->active = active; |
|
|
1979 | ev_ref (EV_A); |
877 | } |
1980 | } |
878 | |
1981 | |
879 | static void |
1982 | void inline_size |
880 | ev_stop (W w) |
1983 | ev_stop (EV_P_ W w) |
881 | { |
1984 | { |
|
|
1985 | ev_unref (EV_A); |
882 | w->active = 0; |
1986 | w->active = 0; |
883 | } |
1987 | } |
884 | |
1988 | |
885 | /*****************************************************************************/ |
1989 | /*****************************************************************************/ |
886 | |
1990 | |
887 | void |
1991 | void noinline |
888 | ev_io_start (struct ev_io *w) |
1992 | ev_io_start (EV_P_ ev_io *w) |
889 | { |
1993 | { |
890 | int fd = w->fd; |
1994 | int fd = w->fd; |
891 | |
1995 | |
892 | if (ev_is_active (w)) |
1996 | if (expect_false (ev_is_active (w))) |
893 | return; |
1997 | return; |
894 | |
1998 | |
895 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1999 | assert (("ev_io_start called with negative fd", fd >= 0)); |
896 | |
2000 | |
897 | ev_start ((W)w, 1); |
2001 | ev_start (EV_A_ (W)w, 1); |
898 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
2002 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
899 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2003 | wlist_add (&anfds[fd].head, (WL)w); |
900 | |
2004 | |
901 | fd_change (fd); |
2005 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
2006 | w->events &= ~EV_IOFDSET; |
902 | } |
2007 | } |
903 | |
2008 | |
904 | void |
2009 | void noinline |
905 | ev_io_stop (struct ev_io *w) |
2010 | ev_io_stop (EV_P_ ev_io *w) |
906 | { |
2011 | { |
907 | ev_clear_pending ((W)w); |
2012 | clear_pending (EV_A_ (W)w); |
908 | if (!ev_is_active (w)) |
2013 | if (expect_false (!ev_is_active (w))) |
909 | return; |
2014 | return; |
910 | |
2015 | |
|
|
2016 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2017 | |
911 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2018 | wlist_del (&anfds[w->fd].head, (WL)w); |
912 | ev_stop ((W)w); |
2019 | ev_stop (EV_A_ (W)w); |
913 | |
2020 | |
914 | fd_change (w->fd); |
2021 | fd_change (EV_A_ w->fd, 1); |
915 | } |
2022 | } |
916 | |
2023 | |
917 | void |
2024 | void noinline |
918 | ev_timer_start (struct ev_timer *w) |
2025 | ev_timer_start (EV_P_ ev_timer *w) |
919 | { |
2026 | { |
920 | if (ev_is_active (w)) |
2027 | if (expect_false (ev_is_active (w))) |
921 | return; |
2028 | return; |
922 | |
2029 | |
923 | w->at += now; |
2030 | ev_at (w) += mn_now; |
924 | |
2031 | |
925 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2032 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
926 | |
2033 | |
927 | ev_start ((W)w, ++timercnt); |
2034 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
928 | array_needsize (timers, timermax, timercnt, ); |
2035 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
929 | timers [timercnt - 1] = w; |
2036 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
930 | upheap ((WT *)timers, timercnt - 1); |
2037 | ANHE_at_set (timers [ev_active (w)]); |
931 | } |
2038 | upheap (timers, ev_active (w)); |
932 | |
2039 | |
933 | void |
2040 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2041 | } |
|
|
2042 | |
|
|
2043 | void noinline |
934 | ev_timer_stop (struct ev_timer *w) |
2044 | ev_timer_stop (EV_P_ ev_timer *w) |
935 | { |
2045 | { |
936 | ev_clear_pending ((W)w); |
2046 | clear_pending (EV_A_ (W)w); |
937 | if (!ev_is_active (w)) |
2047 | if (expect_false (!ev_is_active (w))) |
938 | return; |
2048 | return; |
939 | |
2049 | |
940 | if (w->active < timercnt--) |
2050 | { |
|
|
2051 | int active = ev_active (w); |
|
|
2052 | |
|
|
2053 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2054 | |
|
|
2055 | if (expect_true (active < timercnt + HEAP0 - 1)) |
941 | { |
2056 | { |
942 | timers [w->active - 1] = timers [timercnt]; |
2057 | timers [active] = timers [timercnt + HEAP0 - 1]; |
943 | downheap ((WT *)timers, timercnt, w->active - 1); |
2058 | adjustheap (timers, timercnt, active); |
944 | } |
2059 | } |
945 | |
2060 | |
946 | w->at = w->repeat; |
2061 | --timercnt; |
|
|
2062 | } |
947 | |
2063 | |
|
|
2064 | ev_at (w) -= mn_now; |
|
|
2065 | |
948 | ev_stop ((W)w); |
2066 | ev_stop (EV_A_ (W)w); |
949 | } |
2067 | } |
950 | |
2068 | |
951 | void |
2069 | void noinline |
952 | ev_timer_again (struct ev_timer *w) |
2070 | ev_timer_again (EV_P_ ev_timer *w) |
953 | { |
2071 | { |
954 | if (ev_is_active (w)) |
2072 | if (ev_is_active (w)) |
955 | { |
2073 | { |
956 | if (w->repeat) |
2074 | if (w->repeat) |
957 | { |
2075 | { |
958 | w->at = now + w->repeat; |
2076 | ev_at (w) = mn_now + w->repeat; |
|
|
2077 | ANHE_at_set (timers [ev_active (w)]); |
959 | downheap ((WT *)timers, timercnt, w->active - 1); |
2078 | adjustheap (timers, timercnt, ev_active (w)); |
960 | } |
2079 | } |
961 | else |
2080 | else |
962 | ev_timer_stop (w); |
2081 | ev_timer_stop (EV_A_ w); |
963 | } |
2082 | } |
964 | else if (w->repeat) |
2083 | else if (w->repeat) |
|
|
2084 | { |
|
|
2085 | ev_at (w) = w->repeat; |
965 | ev_timer_start (w); |
2086 | ev_timer_start (EV_A_ w); |
|
|
2087 | } |
966 | } |
2088 | } |
967 | |
2089 | |
968 | void |
2090 | #if EV_PERIODIC_ENABLE |
|
|
2091 | void noinline |
969 | ev_periodic_start (struct ev_periodic *w) |
2092 | ev_periodic_start (EV_P_ ev_periodic *w) |
970 | { |
2093 | { |
971 | if (ev_is_active (w)) |
2094 | if (expect_false (ev_is_active (w))) |
972 | return; |
2095 | return; |
973 | |
2096 | |
|
|
2097 | if (w->reschedule_cb) |
|
|
2098 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2099 | else if (w->interval) |
|
|
2100 | { |
974 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2101 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
975 | |
|
|
976 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2102 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
977 | if (w->interval) |
|
|
978 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
2103 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2104 | } |
|
|
2105 | else |
|
|
2106 | ev_at (w) = w->offset; |
979 | |
2107 | |
980 | ev_start ((W)w, ++periodiccnt); |
2108 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
981 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2109 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
982 | periodics [periodiccnt - 1] = w; |
2110 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
983 | upheap ((WT *)periodics, periodiccnt - 1); |
2111 | ANHE_at_set (periodics [ev_active (w)]); |
984 | } |
2112 | upheap (periodics, ev_active (w)); |
985 | |
2113 | |
986 | void |
2114 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2115 | } |
|
|
2116 | |
|
|
2117 | void noinline |
987 | ev_periodic_stop (struct ev_periodic *w) |
2118 | ev_periodic_stop (EV_P_ ev_periodic *w) |
988 | { |
2119 | { |
989 | ev_clear_pending ((W)w); |
2120 | clear_pending (EV_A_ (W)w); |
990 | if (!ev_is_active (w)) |
2121 | if (expect_false (!ev_is_active (w))) |
991 | return; |
2122 | return; |
992 | |
2123 | |
993 | if (w->active < periodiccnt--) |
2124 | { |
|
|
2125 | int active = ev_active (w); |
|
|
2126 | |
|
|
2127 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2128 | |
|
|
2129 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
994 | { |
2130 | { |
995 | periodics [w->active - 1] = periodics [periodiccnt]; |
2131 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
996 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2132 | adjustheap (periodics, periodiccnt, active); |
997 | } |
2133 | } |
998 | |
2134 | |
|
|
2135 | --periodiccnt; |
|
|
2136 | } |
|
|
2137 | |
999 | ev_stop ((W)w); |
2138 | ev_stop (EV_A_ (W)w); |
1000 | } |
2139 | } |
1001 | |
2140 | |
1002 | void |
2141 | void noinline |
|
|
2142 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2143 | { |
|
|
2144 | /* TODO: use adjustheap and recalculation */ |
|
|
2145 | ev_periodic_stop (EV_A_ w); |
|
|
2146 | ev_periodic_start (EV_A_ w); |
|
|
2147 | } |
|
|
2148 | #endif |
|
|
2149 | |
|
|
2150 | #ifndef SA_RESTART |
|
|
2151 | # define SA_RESTART 0 |
|
|
2152 | #endif |
|
|
2153 | |
|
|
2154 | void noinline |
1003 | ev_signal_start (struct ev_signal *w) |
2155 | ev_signal_start (EV_P_ ev_signal *w) |
1004 | { |
2156 | { |
|
|
2157 | #if EV_MULTIPLICITY |
|
|
2158 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2159 | #endif |
1005 | if (ev_is_active (w)) |
2160 | if (expect_false (ev_is_active (w))) |
1006 | return; |
2161 | return; |
1007 | |
2162 | |
1008 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2163 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1009 | |
2164 | |
1010 | ev_start ((W)w, 1); |
2165 | evpipe_init (EV_A); |
|
|
2166 | |
|
|
2167 | { |
|
|
2168 | #ifndef _WIN32 |
|
|
2169 | sigset_t full, prev; |
|
|
2170 | sigfillset (&full); |
|
|
2171 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2172 | #endif |
|
|
2173 | |
1011 | array_needsize (signals, signalmax, w->signum, signals_init); |
2174 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2175 | |
|
|
2176 | #ifndef _WIN32 |
|
|
2177 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2178 | #endif |
|
|
2179 | } |
|
|
2180 | |
|
|
2181 | ev_start (EV_A_ (W)w, 1); |
1012 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2182 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1013 | |
2183 | |
1014 | if (!w->next) |
2184 | if (!((WL)w)->next) |
1015 | { |
2185 | { |
|
|
2186 | #if _WIN32 |
|
|
2187 | signal (w->signum, ev_sighandler); |
|
|
2188 | #else |
1016 | struct sigaction sa; |
2189 | struct sigaction sa; |
1017 | sa.sa_handler = sighandler; |
2190 | sa.sa_handler = ev_sighandler; |
1018 | sigfillset (&sa.sa_mask); |
2191 | sigfillset (&sa.sa_mask); |
1019 | sa.sa_flags = 0; |
2192 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1020 | sigaction (w->signum, &sa, 0); |
2193 | sigaction (w->signum, &sa, 0); |
|
|
2194 | #endif |
1021 | } |
2195 | } |
1022 | } |
2196 | } |
1023 | |
2197 | |
1024 | void |
2198 | void noinline |
1025 | ev_signal_stop (struct ev_signal *w) |
2199 | ev_signal_stop (EV_P_ ev_signal *w) |
1026 | { |
2200 | { |
1027 | ev_clear_pending ((W)w); |
2201 | clear_pending (EV_A_ (W)w); |
1028 | if (!ev_is_active (w)) |
2202 | if (expect_false (!ev_is_active (w))) |
1029 | return; |
2203 | return; |
1030 | |
2204 | |
1031 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2205 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1032 | ev_stop ((W)w); |
2206 | ev_stop (EV_A_ (W)w); |
1033 | |
2207 | |
1034 | if (!signals [w->signum - 1].head) |
2208 | if (!signals [w->signum - 1].head) |
1035 | signal (w->signum, SIG_DFL); |
2209 | signal (w->signum, SIG_DFL); |
1036 | } |
2210 | } |
1037 | |
2211 | |
1038 | void |
2212 | void |
1039 | ev_idle_start (struct ev_idle *w) |
2213 | ev_child_start (EV_P_ ev_child *w) |
1040 | { |
2214 | { |
|
|
2215 | #if EV_MULTIPLICITY |
|
|
2216 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2217 | #endif |
1041 | if (ev_is_active (w)) |
2218 | if (expect_false (ev_is_active (w))) |
1042 | return; |
2219 | return; |
1043 | |
2220 | |
1044 | ev_start ((W)w, ++idlecnt); |
2221 | ev_start (EV_A_ (W)w, 1); |
1045 | array_needsize (idles, idlemax, idlecnt, ); |
2222 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1046 | idles [idlecnt - 1] = w; |
|
|
1047 | } |
2223 | } |
1048 | |
2224 | |
1049 | void |
2225 | void |
1050 | ev_idle_stop (struct ev_idle *w) |
2226 | ev_child_stop (EV_P_ ev_child *w) |
1051 | { |
2227 | { |
1052 | ev_clear_pending ((W)w); |
2228 | clear_pending (EV_A_ (W)w); |
1053 | if (ev_is_active (w)) |
2229 | if (expect_false (!ev_is_active (w))) |
1054 | return; |
2230 | return; |
1055 | |
2231 | |
1056 | idles [w->active - 1] = idles [--idlecnt]; |
2232 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1057 | ev_stop ((W)w); |
2233 | ev_stop (EV_A_ (W)w); |
1058 | } |
2234 | } |
1059 | |
2235 | |
1060 | void |
2236 | #if EV_STAT_ENABLE |
1061 | ev_prepare_start (struct ev_prepare *w) |
2237 | |
|
|
2238 | # ifdef _WIN32 |
|
|
2239 | # undef lstat |
|
|
2240 | # define lstat(a,b) _stati64 (a,b) |
|
|
2241 | # endif |
|
|
2242 | |
|
|
2243 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2244 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2245 | |
|
|
2246 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2247 | |
|
|
2248 | #if EV_USE_INOTIFY |
|
|
2249 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2250 | |
|
|
2251 | static void noinline |
|
|
2252 | infy_add (EV_P_ ev_stat *w) |
1062 | { |
2253 | { |
1063 | if (ev_is_active (w)) |
2254 | 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); |
|
|
2255 | |
|
|
2256 | if (w->wd < 0) |
|
|
2257 | { |
|
|
2258 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2259 | |
|
|
2260 | /* monitor some parent directory for speedup hints */ |
|
|
2261 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2262 | /* but an efficiency issue only */ |
|
|
2263 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2264 | { |
|
|
2265 | char path [4096]; |
|
|
2266 | strcpy (path, w->path); |
|
|
2267 | |
|
|
2268 | do |
|
|
2269 | { |
|
|
2270 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2271 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2272 | |
|
|
2273 | char *pend = strrchr (path, '/'); |
|
|
2274 | |
|
|
2275 | if (!pend) |
|
|
2276 | break; /* whoops, no '/', complain to your admin */ |
|
|
2277 | |
|
|
2278 | *pend = 0; |
|
|
2279 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2280 | } |
|
|
2281 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2282 | } |
|
|
2283 | } |
|
|
2284 | else |
|
|
2285 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2286 | |
|
|
2287 | if (w->wd >= 0) |
|
|
2288 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2289 | } |
|
|
2290 | |
|
|
2291 | static void noinline |
|
|
2292 | infy_del (EV_P_ ev_stat *w) |
|
|
2293 | { |
|
|
2294 | int slot; |
|
|
2295 | int wd = w->wd; |
|
|
2296 | |
|
|
2297 | if (wd < 0) |
1064 | return; |
2298 | return; |
1065 | |
2299 | |
|
|
2300 | w->wd = -2; |
|
|
2301 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2302 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2303 | |
|
|
2304 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2305 | inotify_rm_watch (fs_fd, wd); |
|
|
2306 | } |
|
|
2307 | |
|
|
2308 | static void noinline |
|
|
2309 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2310 | { |
|
|
2311 | if (slot < 0) |
|
|
2312 | /* overflow, need to check for all hahs slots */ |
|
|
2313 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2314 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2315 | else |
|
|
2316 | { |
|
|
2317 | WL w_; |
|
|
2318 | |
|
|
2319 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2320 | { |
|
|
2321 | ev_stat *w = (ev_stat *)w_; |
|
|
2322 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2323 | |
|
|
2324 | if (w->wd == wd || wd == -1) |
|
|
2325 | { |
|
|
2326 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2327 | { |
|
|
2328 | w->wd = -1; |
|
|
2329 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2330 | } |
|
|
2331 | |
|
|
2332 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2333 | } |
|
|
2334 | } |
|
|
2335 | } |
|
|
2336 | } |
|
|
2337 | |
|
|
2338 | static void |
|
|
2339 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2340 | { |
|
|
2341 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2342 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2343 | int ofs; |
|
|
2344 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2345 | |
|
|
2346 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2347 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2348 | } |
|
|
2349 | |
|
|
2350 | void inline_size |
|
|
2351 | infy_init (EV_P) |
|
|
2352 | { |
|
|
2353 | if (fs_fd != -2) |
|
|
2354 | return; |
|
|
2355 | |
|
|
2356 | fs_fd = inotify_init (); |
|
|
2357 | |
|
|
2358 | if (fs_fd >= 0) |
|
|
2359 | { |
|
|
2360 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2361 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2362 | ev_io_start (EV_A_ &fs_w); |
|
|
2363 | } |
|
|
2364 | } |
|
|
2365 | |
|
|
2366 | void inline_size |
|
|
2367 | infy_fork (EV_P) |
|
|
2368 | { |
|
|
2369 | int slot; |
|
|
2370 | |
|
|
2371 | if (fs_fd < 0) |
|
|
2372 | return; |
|
|
2373 | |
|
|
2374 | close (fs_fd); |
|
|
2375 | fs_fd = inotify_init (); |
|
|
2376 | |
|
|
2377 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2378 | { |
|
|
2379 | WL w_ = fs_hash [slot].head; |
|
|
2380 | fs_hash [slot].head = 0; |
|
|
2381 | |
|
|
2382 | while (w_) |
|
|
2383 | { |
|
|
2384 | ev_stat *w = (ev_stat *)w_; |
|
|
2385 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2386 | |
|
|
2387 | w->wd = -1; |
|
|
2388 | |
|
|
2389 | if (fs_fd >= 0) |
|
|
2390 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2391 | else |
|
|
2392 | ev_timer_start (EV_A_ &w->timer); |
|
|
2393 | } |
|
|
2394 | |
|
|
2395 | } |
|
|
2396 | } |
|
|
2397 | |
|
|
2398 | #endif |
|
|
2399 | |
|
|
2400 | void |
|
|
2401 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2402 | { |
|
|
2403 | if (lstat (w->path, &w->attr) < 0) |
|
|
2404 | w->attr.st_nlink = 0; |
|
|
2405 | else if (!w->attr.st_nlink) |
|
|
2406 | w->attr.st_nlink = 1; |
|
|
2407 | } |
|
|
2408 | |
|
|
2409 | static void noinline |
|
|
2410 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2411 | { |
|
|
2412 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2413 | |
|
|
2414 | /* we copy this here each the time so that */ |
|
|
2415 | /* prev has the old value when the callback gets invoked */ |
|
|
2416 | w->prev = w->attr; |
|
|
2417 | ev_stat_stat (EV_A_ w); |
|
|
2418 | |
|
|
2419 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2420 | if ( |
|
|
2421 | w->prev.st_dev != w->attr.st_dev |
|
|
2422 | || w->prev.st_ino != w->attr.st_ino |
|
|
2423 | || w->prev.st_mode != w->attr.st_mode |
|
|
2424 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2425 | || w->prev.st_uid != w->attr.st_uid |
|
|
2426 | || w->prev.st_gid != w->attr.st_gid |
|
|
2427 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2428 | || w->prev.st_size != w->attr.st_size |
|
|
2429 | || w->prev.st_atime != w->attr.st_atime |
|
|
2430 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2431 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2432 | ) { |
|
|
2433 | #if EV_USE_INOTIFY |
|
|
2434 | infy_del (EV_A_ w); |
|
|
2435 | infy_add (EV_A_ w); |
|
|
2436 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2437 | #endif |
|
|
2438 | |
|
|
2439 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2440 | } |
|
|
2441 | } |
|
|
2442 | |
|
|
2443 | void |
|
|
2444 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2445 | { |
|
|
2446 | if (expect_false (ev_is_active (w))) |
|
|
2447 | return; |
|
|
2448 | |
|
|
2449 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2450 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2451 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2452 | |
|
|
2453 | ev_stat_stat (EV_A_ w); |
|
|
2454 | |
|
|
2455 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2456 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2457 | |
|
|
2458 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2459 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2460 | |
|
|
2461 | #if EV_USE_INOTIFY |
|
|
2462 | infy_init (EV_A); |
|
|
2463 | |
|
|
2464 | if (fs_fd >= 0) |
|
|
2465 | infy_add (EV_A_ w); |
|
|
2466 | else |
|
|
2467 | #endif |
|
|
2468 | ev_timer_start (EV_A_ &w->timer); |
|
|
2469 | |
|
|
2470 | ev_start (EV_A_ (W)w, 1); |
|
|
2471 | } |
|
|
2472 | |
|
|
2473 | void |
|
|
2474 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2475 | { |
|
|
2476 | clear_pending (EV_A_ (W)w); |
|
|
2477 | if (expect_false (!ev_is_active (w))) |
|
|
2478 | return; |
|
|
2479 | |
|
|
2480 | #if EV_USE_INOTIFY |
|
|
2481 | infy_del (EV_A_ w); |
|
|
2482 | #endif |
|
|
2483 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2484 | |
|
|
2485 | ev_stop (EV_A_ (W)w); |
|
|
2486 | } |
|
|
2487 | #endif |
|
|
2488 | |
|
|
2489 | #if EV_IDLE_ENABLE |
|
|
2490 | void |
|
|
2491 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2492 | { |
|
|
2493 | if (expect_false (ev_is_active (w))) |
|
|
2494 | return; |
|
|
2495 | |
|
|
2496 | pri_adjust (EV_A_ (W)w); |
|
|
2497 | |
|
|
2498 | { |
|
|
2499 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2500 | |
|
|
2501 | ++idleall; |
|
|
2502 | ev_start (EV_A_ (W)w, active); |
|
|
2503 | |
|
|
2504 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2505 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2506 | } |
|
|
2507 | } |
|
|
2508 | |
|
|
2509 | void |
|
|
2510 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2511 | { |
|
|
2512 | clear_pending (EV_A_ (W)w); |
|
|
2513 | if (expect_false (!ev_is_active (w))) |
|
|
2514 | return; |
|
|
2515 | |
|
|
2516 | { |
|
|
2517 | int active = ev_active (w); |
|
|
2518 | |
|
|
2519 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2520 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2521 | |
|
|
2522 | ev_stop (EV_A_ (W)w); |
|
|
2523 | --idleall; |
|
|
2524 | } |
|
|
2525 | } |
|
|
2526 | #endif |
|
|
2527 | |
|
|
2528 | void |
|
|
2529 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2530 | { |
|
|
2531 | if (expect_false (ev_is_active (w))) |
|
|
2532 | return; |
|
|
2533 | |
1066 | ev_start ((W)w, ++preparecnt); |
2534 | ev_start (EV_A_ (W)w, ++preparecnt); |
1067 | array_needsize (prepares, preparemax, preparecnt, ); |
2535 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
1068 | prepares [preparecnt - 1] = w; |
2536 | prepares [preparecnt - 1] = w; |
1069 | } |
2537 | } |
1070 | |
2538 | |
1071 | void |
2539 | void |
1072 | ev_prepare_stop (struct ev_prepare *w) |
2540 | ev_prepare_stop (EV_P_ ev_prepare *w) |
1073 | { |
2541 | { |
1074 | ev_clear_pending ((W)w); |
2542 | clear_pending (EV_A_ (W)w); |
1075 | if (ev_is_active (w)) |
2543 | if (expect_false (!ev_is_active (w))) |
1076 | return; |
2544 | return; |
1077 | |
2545 | |
|
|
2546 | { |
|
|
2547 | int active = ev_active (w); |
|
|
2548 | |
1078 | prepares [w->active - 1] = prepares [--preparecnt]; |
2549 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2550 | ev_active (prepares [active - 1]) = active; |
|
|
2551 | } |
|
|
2552 | |
1079 | ev_stop ((W)w); |
2553 | ev_stop (EV_A_ (W)w); |
1080 | } |
2554 | } |
1081 | |
2555 | |
1082 | void |
2556 | void |
1083 | ev_check_start (struct ev_check *w) |
2557 | ev_check_start (EV_P_ ev_check *w) |
1084 | { |
2558 | { |
1085 | if (ev_is_active (w)) |
2559 | if (expect_false (ev_is_active (w))) |
1086 | return; |
2560 | return; |
1087 | |
2561 | |
1088 | ev_start ((W)w, ++checkcnt); |
2562 | ev_start (EV_A_ (W)w, ++checkcnt); |
1089 | array_needsize (checks, checkmax, checkcnt, ); |
2563 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
1090 | checks [checkcnt - 1] = w; |
2564 | checks [checkcnt - 1] = w; |
1091 | } |
2565 | } |
1092 | |
2566 | |
1093 | void |
2567 | void |
1094 | ev_check_stop (struct ev_check *w) |
2568 | ev_check_stop (EV_P_ ev_check *w) |
1095 | { |
2569 | { |
1096 | ev_clear_pending ((W)w); |
2570 | clear_pending (EV_A_ (W)w); |
1097 | if (ev_is_active (w)) |
2571 | if (expect_false (!ev_is_active (w))) |
1098 | return; |
2572 | return; |
1099 | |
2573 | |
|
|
2574 | { |
|
|
2575 | int active = ev_active (w); |
|
|
2576 | |
1100 | checks [w->active - 1] = checks [--checkcnt]; |
2577 | checks [active - 1] = checks [--checkcnt]; |
|
|
2578 | ev_active (checks [active - 1]) = active; |
|
|
2579 | } |
|
|
2580 | |
1101 | ev_stop ((W)w); |
2581 | ev_stop (EV_A_ (W)w); |
1102 | } |
2582 | } |
1103 | |
2583 | |
1104 | void |
2584 | #if EV_EMBED_ENABLE |
1105 | ev_child_start (struct ev_child *w) |
2585 | void noinline |
|
|
2586 | ev_embed_sweep (EV_P_ ev_embed *w) |
1106 | { |
2587 | { |
|
|
2588 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2589 | } |
|
|
2590 | |
|
|
2591 | static void |
|
|
2592 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2593 | { |
|
|
2594 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2595 | |
1107 | if (ev_is_active (w)) |
2596 | if (ev_cb (w)) |
|
|
2597 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2598 | else |
|
|
2599 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2600 | } |
|
|
2601 | |
|
|
2602 | static void |
|
|
2603 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2604 | { |
|
|
2605 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2606 | |
|
|
2607 | { |
|
|
2608 | struct ev_loop *loop = w->other; |
|
|
2609 | |
|
|
2610 | while (fdchangecnt) |
|
|
2611 | { |
|
|
2612 | fd_reify (EV_A); |
|
|
2613 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2614 | } |
|
|
2615 | } |
|
|
2616 | } |
|
|
2617 | |
|
|
2618 | #if 0 |
|
|
2619 | static void |
|
|
2620 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2621 | { |
|
|
2622 | ev_idle_stop (EV_A_ idle); |
|
|
2623 | } |
|
|
2624 | #endif |
|
|
2625 | |
|
|
2626 | void |
|
|
2627 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2628 | { |
|
|
2629 | if (expect_false (ev_is_active (w))) |
1108 | return; |
2630 | return; |
1109 | |
2631 | |
|
|
2632 | { |
|
|
2633 | struct ev_loop *loop = w->other; |
|
|
2634 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2635 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2636 | } |
|
|
2637 | |
|
|
2638 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2639 | ev_io_start (EV_A_ &w->io); |
|
|
2640 | |
|
|
2641 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2642 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2643 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2644 | |
|
|
2645 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2646 | |
1110 | ev_start ((W)w, 1); |
2647 | ev_start (EV_A_ (W)w, 1); |
1111 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1112 | } |
2648 | } |
1113 | |
2649 | |
1114 | void |
2650 | void |
1115 | ev_child_stop (struct ev_child *w) |
2651 | ev_embed_stop (EV_P_ ev_embed *w) |
1116 | { |
2652 | { |
1117 | ev_clear_pending ((W)w); |
2653 | clear_pending (EV_A_ (W)w); |
1118 | if (ev_is_active (w)) |
2654 | if (expect_false (!ev_is_active (w))) |
1119 | return; |
2655 | return; |
1120 | |
2656 | |
1121 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2657 | ev_io_stop (EV_A_ &w->io); |
|
|
2658 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2659 | |
1122 | ev_stop ((W)w); |
2660 | ev_stop (EV_A_ (W)w); |
1123 | } |
2661 | } |
|
|
2662 | #endif |
|
|
2663 | |
|
|
2664 | #if EV_FORK_ENABLE |
|
|
2665 | void |
|
|
2666 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2667 | { |
|
|
2668 | if (expect_false (ev_is_active (w))) |
|
|
2669 | return; |
|
|
2670 | |
|
|
2671 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2672 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2673 | forks [forkcnt - 1] = w; |
|
|
2674 | } |
|
|
2675 | |
|
|
2676 | void |
|
|
2677 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2678 | { |
|
|
2679 | clear_pending (EV_A_ (W)w); |
|
|
2680 | if (expect_false (!ev_is_active (w))) |
|
|
2681 | return; |
|
|
2682 | |
|
|
2683 | { |
|
|
2684 | int active = ev_active (w); |
|
|
2685 | |
|
|
2686 | forks [active - 1] = forks [--forkcnt]; |
|
|
2687 | ev_active (forks [active - 1]) = active; |
|
|
2688 | } |
|
|
2689 | |
|
|
2690 | ev_stop (EV_A_ (W)w); |
|
|
2691 | } |
|
|
2692 | #endif |
|
|
2693 | |
|
|
2694 | #if EV_ASYNC_ENABLE |
|
|
2695 | void |
|
|
2696 | ev_async_start (EV_P_ ev_async *w) |
|
|
2697 | { |
|
|
2698 | if (expect_false (ev_is_active (w))) |
|
|
2699 | return; |
|
|
2700 | |
|
|
2701 | evpipe_init (EV_A); |
|
|
2702 | |
|
|
2703 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2704 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2705 | asyncs [asynccnt - 1] = w; |
|
|
2706 | } |
|
|
2707 | |
|
|
2708 | void |
|
|
2709 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2710 | { |
|
|
2711 | clear_pending (EV_A_ (W)w); |
|
|
2712 | if (expect_false (!ev_is_active (w))) |
|
|
2713 | return; |
|
|
2714 | |
|
|
2715 | { |
|
|
2716 | int active = ev_active (w); |
|
|
2717 | |
|
|
2718 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2719 | ev_active (asyncs [active - 1]) = active; |
|
|
2720 | } |
|
|
2721 | |
|
|
2722 | ev_stop (EV_A_ (W)w); |
|
|
2723 | } |
|
|
2724 | |
|
|
2725 | void |
|
|
2726 | ev_async_send (EV_P_ ev_async *w) |
|
|
2727 | { |
|
|
2728 | w->sent = 1; |
|
|
2729 | evpipe_write (EV_A_ &gotasync); |
|
|
2730 | } |
|
|
2731 | #endif |
1124 | |
2732 | |
1125 | /*****************************************************************************/ |
2733 | /*****************************************************************************/ |
1126 | |
2734 | |
1127 | struct ev_once |
2735 | struct ev_once |
1128 | { |
2736 | { |
1129 | struct ev_io io; |
2737 | ev_io io; |
1130 | struct ev_timer to; |
2738 | ev_timer to; |
1131 | void (*cb)(int revents, void *arg); |
2739 | void (*cb)(int revents, void *arg); |
1132 | void *arg; |
2740 | void *arg; |
1133 | }; |
2741 | }; |
1134 | |
2742 | |
1135 | static void |
2743 | static void |
1136 | once_cb (struct ev_once *once, int revents) |
2744 | once_cb (EV_P_ struct ev_once *once, int revents) |
1137 | { |
2745 | { |
1138 | void (*cb)(int revents, void *arg) = once->cb; |
2746 | void (*cb)(int revents, void *arg) = once->cb; |
1139 | void *arg = once->arg; |
2747 | void *arg = once->arg; |
1140 | |
2748 | |
1141 | ev_io_stop (&once->io); |
2749 | ev_io_stop (EV_A_ &once->io); |
1142 | ev_timer_stop (&once->to); |
2750 | ev_timer_stop (EV_A_ &once->to); |
1143 | free (once); |
2751 | ev_free (once); |
1144 | |
2752 | |
1145 | cb (revents, arg); |
2753 | cb (revents, arg); |
1146 | } |
2754 | } |
1147 | |
2755 | |
1148 | static void |
2756 | static void |
1149 | once_cb_io (struct ev_io *w, int revents) |
2757 | once_cb_io (EV_P_ ev_io *w, int revents) |
1150 | { |
2758 | { |
1151 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2759 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1152 | } |
2760 | } |
1153 | |
2761 | |
1154 | static void |
2762 | static void |
1155 | once_cb_to (struct ev_timer *w, int revents) |
2763 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1156 | { |
2764 | { |
1157 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2765 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1158 | } |
2766 | } |
1159 | |
2767 | |
1160 | void |
2768 | void |
1161 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2769 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1162 | { |
2770 | { |
1163 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2771 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1164 | |
2772 | |
1165 | if (!once) |
2773 | if (expect_false (!once)) |
|
|
2774 | { |
1166 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2775 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1167 | else |
2776 | return; |
1168 | { |
2777 | } |
|
|
2778 | |
1169 | once->cb = cb; |
2779 | once->cb = cb; |
1170 | once->arg = arg; |
2780 | once->arg = arg; |
1171 | |
2781 | |
1172 | ev_watcher_init (&once->io, once_cb_io); |
2782 | ev_init (&once->io, once_cb_io); |
1173 | if (fd >= 0) |
2783 | if (fd >= 0) |
1174 | { |
2784 | { |
1175 | ev_io_set (&once->io, fd, events); |
2785 | ev_io_set (&once->io, fd, events); |
1176 | ev_io_start (&once->io); |
2786 | ev_io_start (EV_A_ &once->io); |
1177 | } |
2787 | } |
1178 | |
2788 | |
1179 | ev_watcher_init (&once->to, once_cb_to); |
2789 | ev_init (&once->to, once_cb_to); |
1180 | if (timeout >= 0.) |
2790 | if (timeout >= 0.) |
1181 | { |
2791 | { |
1182 | ev_timer_set (&once->to, timeout, 0.); |
2792 | ev_timer_set (&once->to, timeout, 0.); |
1183 | ev_timer_start (&once->to); |
2793 | ev_timer_start (EV_A_ &once->to); |
1184 | } |
|
|
1185 | } |
|
|
1186 | } |
|
|
1187 | |
|
|
1188 | /*****************************************************************************/ |
|
|
1189 | |
|
|
1190 | #if 0 |
|
|
1191 | |
|
|
1192 | struct ev_io wio; |
|
|
1193 | |
|
|
1194 | static void |
|
|
1195 | sin_cb (struct ev_io *w, int revents) |
|
|
1196 | { |
|
|
1197 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1198 | } |
|
|
1199 | |
|
|
1200 | static void |
|
|
1201 | ocb (struct ev_timer *w, int revents) |
|
|
1202 | { |
|
|
1203 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1204 | ev_timer_stop (w); |
|
|
1205 | ev_timer_start (w); |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | static void |
|
|
1209 | scb (struct ev_signal *w, int revents) |
|
|
1210 | { |
|
|
1211 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1212 | ev_io_stop (&wio); |
|
|
1213 | ev_io_start (&wio); |
|
|
1214 | } |
|
|
1215 | |
|
|
1216 | static void |
|
|
1217 | gcb (struct ev_signal *w, int revents) |
|
|
1218 | { |
|
|
1219 | fprintf (stderr, "generic %x\n", revents); |
|
|
1220 | |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | int main (void) |
|
|
1224 | { |
|
|
1225 | ev_init (0); |
|
|
1226 | |
|
|
1227 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1228 | ev_io_start (&wio); |
|
|
1229 | |
|
|
1230 | struct ev_timer t[10000]; |
|
|
1231 | |
|
|
1232 | #if 0 |
|
|
1233 | int i; |
|
|
1234 | for (i = 0; i < 10000; ++i) |
|
|
1235 | { |
2794 | } |
1236 | struct ev_timer *w = t + i; |
|
|
1237 | ev_watcher_init (w, ocb, i); |
|
|
1238 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1239 | ev_timer_start (w); |
|
|
1240 | if (drand48 () < 0.5) |
|
|
1241 | ev_timer_stop (w); |
|
|
1242 | } |
|
|
1243 | #endif |
|
|
1244 | |
|
|
1245 | struct ev_timer t1; |
|
|
1246 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1247 | ev_timer_start (&t1); |
|
|
1248 | |
|
|
1249 | struct ev_signal sig; |
|
|
1250 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1251 | ev_signal_start (&sig); |
|
|
1252 | |
|
|
1253 | struct ev_check cw; |
|
|
1254 | ev_check_init (&cw, gcb); |
|
|
1255 | ev_check_start (&cw); |
|
|
1256 | |
|
|
1257 | struct ev_idle iw; |
|
|
1258 | ev_idle_init (&iw, gcb); |
|
|
1259 | ev_idle_start (&iw); |
|
|
1260 | |
|
|
1261 | ev_loop (0); |
|
|
1262 | |
|
|
1263 | return 0; |
|
|
1264 | } |
2795 | } |
1265 | |
2796 | |
|
|
2797 | #if EV_MULTIPLICITY |
|
|
2798 | #include "ev_wrap.h" |
1266 | #endif |
2799 | #endif |
1267 | |
2800 | |
|
|
2801 | #ifdef __cplusplus |
|
|
2802 | } |
|
|
2803 | #endif |
1268 | |
2804 | |
1269 | |
|
|
1270 | |
|
|