… | |
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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 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | #ifdef __cplusplus |
33 | extern "C" { |
41 | extern "C" { |
34 | #endif |
42 | #endif |
… | |
… | |
51 | # ifndef EV_USE_MONOTONIC |
59 | # ifndef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 0 |
60 | # define EV_USE_MONOTONIC 0 |
53 | # endif |
61 | # endif |
54 | # ifndef EV_USE_REALTIME |
62 | # ifndef EV_USE_REALTIME |
55 | # define EV_USE_REALTIME 0 |
63 | # define EV_USE_REALTIME 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_NANOSLEEP |
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68 | # if HAVE_NANOSLEEP |
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69 | # define EV_USE_NANOSLEEP 1 |
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70 | # else |
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71 | # define EV_USE_NANOSLEEP 0 |
56 | # endif |
72 | # endif |
57 | # endif |
73 | # endif |
58 | |
74 | |
59 | # ifndef EV_USE_SELECT |
75 | # ifndef EV_USE_SELECT |
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
76 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
… | |
… | |
146 | |
162 | |
147 | #ifndef EV_USE_REALTIME |
163 | #ifndef EV_USE_REALTIME |
148 | # define EV_USE_REALTIME 0 |
164 | # define EV_USE_REALTIME 0 |
149 | #endif |
165 | #endif |
150 | |
166 | |
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167 | #ifndef EV_USE_NANOSLEEP |
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168 | # define EV_USE_NANOSLEEP 0 |
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169 | #endif |
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170 | |
151 | #ifndef EV_USE_SELECT |
171 | #ifndef EV_USE_SELECT |
152 | # define EV_USE_SELECT 1 |
172 | # define EV_USE_SELECT 1 |
153 | #endif |
173 | #endif |
154 | |
174 | |
155 | #ifndef EV_USE_POLL |
175 | #ifndef EV_USE_POLL |
… | |
… | |
202 | #ifndef CLOCK_REALTIME |
222 | #ifndef CLOCK_REALTIME |
203 | # undef EV_USE_REALTIME |
223 | # undef EV_USE_REALTIME |
204 | # define EV_USE_REALTIME 0 |
224 | # define EV_USE_REALTIME 0 |
205 | #endif |
225 | #endif |
206 | |
226 | |
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227 | #if !EV_STAT_ENABLE |
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228 | # undef EV_USE_INOTIFY |
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229 | # define EV_USE_INOTIFY 0 |
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230 | #endif |
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231 | |
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232 | #if !EV_USE_NANOSLEEP |
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233 | # ifndef _WIN32 |
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234 | # include <sys/select.h> |
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235 | # endif |
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236 | #endif |
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237 | |
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238 | #if EV_USE_INOTIFY |
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239 | # include <sys/inotify.h> |
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240 | #endif |
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241 | |
207 | #if EV_SELECT_IS_WINSOCKET |
242 | #if EV_SELECT_IS_WINSOCKET |
208 | # include <winsock.h> |
243 | # include <winsock.h> |
209 | #endif |
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210 | |
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211 | #if !EV_STAT_ENABLE |
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212 | # define EV_USE_INOTIFY 0 |
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213 | #endif |
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214 | |
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215 | #if EV_USE_INOTIFY |
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216 | # include <sys/inotify.h> |
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217 | #endif |
244 | #endif |
218 | |
245 | |
219 | /**/ |
246 | /**/ |
220 | |
247 | |
221 | /* |
248 | /* |
… | |
… | |
230 | |
257 | |
231 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
258 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
232 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
259 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
233 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
260 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
234 | |
261 | |
235 | #if __GNUC__ >= 3 |
262 | #if __GNUC__ >= 4 |
236 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
263 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
237 | # define noinline __attribute__ ((noinline)) |
264 | # define noinline __attribute__ ((noinline)) |
238 | #else |
265 | #else |
239 | # define expect(expr,value) (expr) |
266 | # define expect(expr,value) (expr) |
240 | # define noinline |
267 | # define noinline |
… | |
… | |
261 | |
288 | |
262 | typedef ev_watcher *W; |
289 | typedef ev_watcher *W; |
263 | typedef ev_watcher_list *WL; |
290 | typedef ev_watcher_list *WL; |
264 | typedef ev_watcher_time *WT; |
291 | typedef ev_watcher_time *WT; |
265 | |
292 | |
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293 | #if EV_USE_MONOTONIC |
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294 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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295 | /* giving it a reasonably high chance of working on typical architetcures */ |
266 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
296 | static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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297 | #endif |
267 | |
298 | |
268 | #ifdef _WIN32 |
299 | #ifdef _WIN32 |
269 | # include "ev_win32.c" |
300 | # include "ev_win32.c" |
270 | #endif |
301 | #endif |
271 | |
302 | |
… | |
… | |
407 | { |
438 | { |
408 | return ev_rt_now; |
439 | return ev_rt_now; |
409 | } |
440 | } |
410 | #endif |
441 | #endif |
411 | |
442 | |
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443 | void |
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444 | ev_sleep (ev_tstamp delay) |
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445 | { |
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446 | if (delay > 0.) |
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447 | { |
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448 | #if EV_USE_NANOSLEEP |
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449 | struct timespec ts; |
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450 | |
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451 | ts.tv_sec = (time_t)delay; |
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452 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
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453 | |
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454 | nanosleep (&ts, 0); |
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455 | #elif defined(_WIN32) |
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456 | Sleep (delay * 1e3); |
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457 | #else |
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458 | struct timeval tv; |
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459 | |
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460 | tv.tv_sec = (time_t)delay; |
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461 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
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462 | |
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463 | select (0, 0, 0, 0, &tv); |
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464 | #endif |
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465 | } |
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466 | } |
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467 | |
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468 | /*****************************************************************************/ |
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469 | |
412 | int inline_size |
470 | int inline_size |
413 | array_nextsize (int elem, int cur, int cnt) |
471 | array_nextsize (int elem, int cur, int cnt) |
414 | { |
472 | { |
415 | int ncur = cur + 1; |
473 | int ncur = cur + 1; |
416 | |
474 | |
… | |
… | |
533 | { |
591 | { |
534 | int fd = fdchanges [i]; |
592 | int fd = fdchanges [i]; |
535 | ANFD *anfd = anfds + fd; |
593 | ANFD *anfd = anfds + fd; |
536 | ev_io *w; |
594 | ev_io *w; |
537 | |
595 | |
538 | int events = 0; |
596 | unsigned char events = 0; |
539 | |
597 | |
540 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
598 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
541 | events |= w->events; |
599 | events |= (unsigned char)w->events; |
542 | |
600 | |
543 | #if EV_SELECT_IS_WINSOCKET |
601 | #if EV_SELECT_IS_WINSOCKET |
544 | if (events) |
602 | if (events) |
545 | { |
603 | { |
546 | unsigned long argp; |
604 | unsigned long argp; |
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605 | #ifdef EV_FD_TO_WIN32_HANDLE |
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606 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
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607 | #else |
547 | anfd->handle = _get_osfhandle (fd); |
608 | anfd->handle = _get_osfhandle (fd); |
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609 | #endif |
548 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
610 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
549 | } |
611 | } |
550 | #endif |
612 | #endif |
551 | |
613 | |
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614 | { |
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615 | unsigned char o_events = anfd->events; |
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616 | unsigned char o_reify = anfd->reify; |
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617 | |
552 | anfd->reify = 0; |
618 | anfd->reify = 0; |
553 | |
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554 | backend_modify (EV_A_ fd, anfd->events, events); |
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555 | anfd->events = events; |
619 | anfd->events = events; |
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620 | |
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621 | if (o_events != events || o_reify & EV_IOFDSET) |
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622 | backend_modify (EV_A_ fd, o_events, events); |
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623 | } |
556 | } |
624 | } |
557 | |
625 | |
558 | fdchangecnt = 0; |
626 | fdchangecnt = 0; |
559 | } |
627 | } |
560 | |
628 | |
561 | void inline_size |
629 | void inline_size |
562 | fd_change (EV_P_ int fd) |
630 | fd_change (EV_P_ int fd, int flags) |
563 | { |
631 | { |
564 | if (expect_false (anfds [fd].reify)) |
632 | unsigned char reify = anfds [fd].reify; |
565 | return; |
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566 | |
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567 | anfds [fd].reify = 1; |
633 | anfds [fd].reify |= flags; |
568 | |
634 | |
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635 | if (expect_true (!reify)) |
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636 | { |
569 | ++fdchangecnt; |
637 | ++fdchangecnt; |
570 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
638 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
571 | fdchanges [fdchangecnt - 1] = fd; |
639 | fdchanges [fdchangecnt - 1] = fd; |
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640 | } |
572 | } |
641 | } |
573 | |
642 | |
574 | void inline_speed |
643 | void inline_speed |
575 | fd_kill (EV_P_ int fd) |
644 | fd_kill (EV_P_ int fd) |
576 | { |
645 | { |
… | |
… | |
627 | |
696 | |
628 | for (fd = 0; fd < anfdmax; ++fd) |
697 | for (fd = 0; fd < anfdmax; ++fd) |
629 | if (anfds [fd].events) |
698 | if (anfds [fd].events) |
630 | { |
699 | { |
631 | anfds [fd].events = 0; |
700 | anfds [fd].events = 0; |
632 | fd_change (EV_A_ fd); |
701 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
633 | } |
702 | } |
634 | } |
703 | } |
635 | |
704 | |
636 | /*****************************************************************************/ |
705 | /*****************************************************************************/ |
637 | |
706 | |
… | |
… | |
792 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
861 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
793 | } |
862 | } |
794 | |
863 | |
795 | /*****************************************************************************/ |
864 | /*****************************************************************************/ |
796 | |
865 | |
797 | static ev_child *childs [EV_PID_HASHSIZE]; |
866 | static WL childs [EV_PID_HASHSIZE]; |
798 | |
867 | |
799 | #ifndef _WIN32 |
868 | #ifndef _WIN32 |
800 | |
869 | |
801 | static ev_signal childev; |
870 | static ev_signal childev; |
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871 | |
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872 | #ifndef WIFCONTINUED |
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873 | # define WIFCONTINUED(status) 0 |
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874 | #endif |
802 | |
875 | |
803 | void inline_speed |
876 | void inline_speed |
804 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
877 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
805 | { |
878 | { |
806 | ev_child *w; |
879 | ev_child *w; |
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|
880 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
807 | |
881 | |
808 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
882 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
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883 | { |
809 | if (w->pid == pid || !w->pid) |
884 | if ((w->pid == pid || !w->pid) |
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885 | && (!traced || (w->flags & 1))) |
810 | { |
886 | { |
811 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
887 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
812 | w->rpid = pid; |
888 | w->rpid = pid; |
813 | w->rstatus = status; |
889 | w->rstatus = status; |
814 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
890 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
815 | } |
891 | } |
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892 | } |
816 | } |
893 | } |
817 | |
894 | |
818 | #ifndef WCONTINUED |
895 | #ifndef WCONTINUED |
819 | # define WCONTINUED 0 |
896 | # define WCONTINUED 0 |
820 | #endif |
897 | #endif |
… | |
… | |
917 | } |
994 | } |
918 | |
995 | |
919 | unsigned int |
996 | unsigned int |
920 | ev_embeddable_backends (void) |
997 | ev_embeddable_backends (void) |
921 | { |
998 | { |
922 | return EVBACKEND_EPOLL |
999 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
923 | | EVBACKEND_KQUEUE |
1000 | |
924 | | EVBACKEND_PORT; |
1001 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
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1002 | /* please fix it and tell me how to detect the fix */ |
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1003 | flags &= ~EVBACKEND_EPOLL; |
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1004 | |
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1005 | return flags; |
925 | } |
1006 | } |
926 | |
1007 | |
927 | unsigned int |
1008 | unsigned int |
928 | ev_backend (EV_P) |
1009 | ev_backend (EV_P) |
929 | { |
1010 | { |
… | |
… | |
932 | |
1013 | |
933 | unsigned int |
1014 | unsigned int |
934 | ev_loop_count (EV_P) |
1015 | ev_loop_count (EV_P) |
935 | { |
1016 | { |
936 | return loop_count; |
1017 | return loop_count; |
|
|
1018 | } |
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1019 | |
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1020 | void |
|
|
1021 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1022 | { |
|
|
1023 | io_blocktime = interval; |
|
|
1024 | } |
|
|
1025 | |
|
|
1026 | void |
|
|
1027 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
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1028 | { |
|
|
1029 | timeout_blocktime = interval; |
937 | } |
1030 | } |
938 | |
1031 | |
939 | static void noinline |
1032 | static void noinline |
940 | loop_init (EV_P_ unsigned int flags) |
1033 | loop_init (EV_P_ unsigned int flags) |
941 | { |
1034 | { |
… | |
… | |
952 | ev_rt_now = ev_time (); |
1045 | ev_rt_now = ev_time (); |
953 | mn_now = get_clock (); |
1046 | mn_now = get_clock (); |
954 | now_floor = mn_now; |
1047 | now_floor = mn_now; |
955 | rtmn_diff = ev_rt_now - mn_now; |
1048 | rtmn_diff = ev_rt_now - mn_now; |
956 | |
1049 | |
|
|
1050 | io_blocktime = 0.; |
|
|
1051 | timeout_blocktime = 0.; |
|
|
1052 | |
957 | /* pid check not overridable via env */ |
1053 | /* pid check not overridable via env */ |
958 | #ifndef _WIN32 |
1054 | #ifndef _WIN32 |
959 | if (flags & EVFLAG_FORKCHECK) |
1055 | if (flags & EVFLAG_FORKCHECK) |
960 | curpid = getpid (); |
1056 | curpid = getpid (); |
961 | #endif |
1057 | #endif |
… | |
… | |
1029 | array_free (pending, [i]); |
1125 | array_free (pending, [i]); |
1030 | #if EV_IDLE_ENABLE |
1126 | #if EV_IDLE_ENABLE |
1031 | array_free (idle, [i]); |
1127 | array_free (idle, [i]); |
1032 | #endif |
1128 | #endif |
1033 | } |
1129 | } |
|
|
1130 | |
|
|
1131 | ev_free (anfds); anfdmax = 0; |
1034 | |
1132 | |
1035 | /* have to use the microsoft-never-gets-it-right macro */ |
1133 | /* have to use the microsoft-never-gets-it-right macro */ |
1036 | array_free (fdchange, EMPTY); |
1134 | array_free (fdchange, EMPTY); |
1037 | array_free (timer, EMPTY); |
1135 | array_free (timer, EMPTY); |
1038 | #if EV_PERIODIC_ENABLE |
1136 | #if EV_PERIODIC_ENABLE |
1039 | array_free (periodic, EMPTY); |
1137 | array_free (periodic, EMPTY); |
1040 | #endif |
1138 | #endif |
|
|
1139 | #if EV_FORK_ENABLE |
|
|
1140 | array_free (fork, EMPTY); |
|
|
1141 | #endif |
1041 | array_free (prepare, EMPTY); |
1142 | array_free (prepare, EMPTY); |
1042 | array_free (check, EMPTY); |
1143 | array_free (check, EMPTY); |
1043 | |
1144 | |
1044 | backend = 0; |
1145 | backend = 0; |
1045 | } |
1146 | } |
… | |
… | |
1073 | |
1174 | |
1074 | while (pipe (sigpipe)) |
1175 | while (pipe (sigpipe)) |
1075 | syserr ("(libev) error creating pipe"); |
1176 | syserr ("(libev) error creating pipe"); |
1076 | |
1177 | |
1077 | siginit (EV_A); |
1178 | siginit (EV_A); |
|
|
1179 | sigcb (EV_A_ &sigev, EV_READ); |
1078 | } |
1180 | } |
1079 | |
1181 | |
1080 | postfork = 0; |
1182 | postfork = 0; |
1081 | } |
1183 | } |
1082 | |
1184 | |
… | |
… | |
1104 | } |
1206 | } |
1105 | |
1207 | |
1106 | void |
1208 | void |
1107 | ev_loop_fork (EV_P) |
1209 | ev_loop_fork (EV_P) |
1108 | { |
1210 | { |
1109 | postfork = 1; |
1211 | postfork = 1; /* must be in line with ev_default_fork */ |
1110 | } |
1212 | } |
1111 | |
1213 | |
1112 | #endif |
1214 | #endif |
1113 | |
1215 | |
1114 | #if EV_MULTIPLICITY |
1216 | #if EV_MULTIPLICITY |
… | |
… | |
1178 | #if EV_MULTIPLICITY |
1280 | #if EV_MULTIPLICITY |
1179 | struct ev_loop *loop = ev_default_loop_ptr; |
1281 | struct ev_loop *loop = ev_default_loop_ptr; |
1180 | #endif |
1282 | #endif |
1181 | |
1283 | |
1182 | if (backend) |
1284 | if (backend) |
1183 | postfork = 1; |
1285 | postfork = 1; /* must be in line with ev_loop_fork */ |
1184 | } |
1286 | } |
1185 | |
1287 | |
1186 | /*****************************************************************************/ |
1288 | /*****************************************************************************/ |
1187 | |
1289 | |
1188 | void |
1290 | void |
… | |
… | |
1443 | /* update fd-related kernel structures */ |
1545 | /* update fd-related kernel structures */ |
1444 | fd_reify (EV_A); |
1546 | fd_reify (EV_A); |
1445 | |
1547 | |
1446 | /* calculate blocking time */ |
1548 | /* calculate blocking time */ |
1447 | { |
1549 | { |
1448 | ev_tstamp block; |
1550 | ev_tstamp waittime = 0.; |
|
|
1551 | ev_tstamp sleeptime = 0.; |
1449 | |
1552 | |
1450 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1553 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1451 | block = 0.; /* do not block at all */ |
|
|
1452 | else |
|
|
1453 | { |
1554 | { |
1454 | /* update time to cancel out callback processing overhead */ |
1555 | /* update time to cancel out callback processing overhead */ |
1455 | time_update (EV_A_ 1e100); |
1556 | time_update (EV_A_ 1e100); |
1456 | |
1557 | |
1457 | block = MAX_BLOCKTIME; |
1558 | waittime = MAX_BLOCKTIME; |
1458 | |
1559 | |
1459 | if (timercnt) |
1560 | if (timercnt) |
1460 | { |
1561 | { |
1461 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1562 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1462 | if (block > to) block = to; |
1563 | if (waittime > to) waittime = to; |
1463 | } |
1564 | } |
1464 | |
1565 | |
1465 | #if EV_PERIODIC_ENABLE |
1566 | #if EV_PERIODIC_ENABLE |
1466 | if (periodiccnt) |
1567 | if (periodiccnt) |
1467 | { |
1568 | { |
1468 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1569 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1469 | if (block > to) block = to; |
1570 | if (waittime > to) waittime = to; |
1470 | } |
1571 | } |
1471 | #endif |
1572 | #endif |
1472 | |
1573 | |
1473 | if (expect_false (block < 0.)) block = 0.; |
1574 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1575 | waittime = timeout_blocktime; |
|
|
1576 | |
|
|
1577 | sleeptime = waittime - backend_fudge; |
|
|
1578 | |
|
|
1579 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1580 | sleeptime = io_blocktime; |
|
|
1581 | |
|
|
1582 | if (sleeptime) |
|
|
1583 | { |
|
|
1584 | ev_sleep (sleeptime); |
|
|
1585 | waittime -= sleeptime; |
|
|
1586 | } |
1474 | } |
1587 | } |
1475 | |
1588 | |
1476 | ++loop_count; |
1589 | ++loop_count; |
1477 | backend_poll (EV_A_ block); |
1590 | backend_poll (EV_A_ waittime); |
1478 | |
1591 | |
1479 | /* update ev_rt_now, do magic */ |
1592 | /* update ev_rt_now, do magic */ |
1480 | time_update (EV_A_ block); |
1593 | time_update (EV_A_ waittime + sleeptime); |
1481 | } |
1594 | } |
1482 | |
1595 | |
1483 | /* queue pending timers and reschedule them */ |
1596 | /* queue pending timers and reschedule them */ |
1484 | timers_reify (EV_A); /* relative timers called last */ |
1597 | timers_reify (EV_A); /* relative timers called last */ |
1485 | #if EV_PERIODIC_ENABLE |
1598 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1597 | |
1710 | |
1598 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1711 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1599 | |
1712 | |
1600 | ev_start (EV_A_ (W)w, 1); |
1713 | ev_start (EV_A_ (W)w, 1); |
1601 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1714 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1602 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1715 | wlist_add (&anfds[fd].head, (WL)w); |
1603 | |
1716 | |
1604 | fd_change (EV_A_ fd); |
1717 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1718 | w->events &= ~EV_IOFDSET; |
1605 | } |
1719 | } |
1606 | |
1720 | |
1607 | void noinline |
1721 | void noinline |
1608 | ev_io_stop (EV_P_ ev_io *w) |
1722 | ev_io_stop (EV_P_ ev_io *w) |
1609 | { |
1723 | { |
… | |
… | |
1611 | if (expect_false (!ev_is_active (w))) |
1725 | if (expect_false (!ev_is_active (w))) |
1612 | return; |
1726 | return; |
1613 | |
1727 | |
1614 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1728 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1615 | |
1729 | |
1616 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1730 | wlist_del (&anfds[w->fd].head, (WL)w); |
1617 | ev_stop (EV_A_ (W)w); |
1731 | ev_stop (EV_A_ (W)w); |
1618 | |
1732 | |
1619 | fd_change (EV_A_ w->fd); |
1733 | fd_change (EV_A_ w->fd, 1); |
1620 | } |
1734 | } |
1621 | |
1735 | |
1622 | void noinline |
1736 | void noinline |
1623 | ev_timer_start (EV_P_ ev_timer *w) |
1737 | ev_timer_start (EV_P_ ev_timer *w) |
1624 | { |
1738 | { |
… | |
… | |
1766 | sigprocmask (SIG_SETMASK, &prev, 0); |
1880 | sigprocmask (SIG_SETMASK, &prev, 0); |
1767 | #endif |
1881 | #endif |
1768 | } |
1882 | } |
1769 | |
1883 | |
1770 | ev_start (EV_A_ (W)w, 1); |
1884 | ev_start (EV_A_ (W)w, 1); |
1771 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1885 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1772 | |
1886 | |
1773 | if (!((WL)w)->next) |
1887 | if (!((WL)w)->next) |
1774 | { |
1888 | { |
1775 | #if _WIN32 |
1889 | #if _WIN32 |
1776 | signal (w->signum, sighandler); |
1890 | signal (w->signum, sighandler); |
… | |
… | |
1789 | { |
1903 | { |
1790 | clear_pending (EV_A_ (W)w); |
1904 | clear_pending (EV_A_ (W)w); |
1791 | if (expect_false (!ev_is_active (w))) |
1905 | if (expect_false (!ev_is_active (w))) |
1792 | return; |
1906 | return; |
1793 | |
1907 | |
1794 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1908 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1795 | ev_stop (EV_A_ (W)w); |
1909 | ev_stop (EV_A_ (W)w); |
1796 | |
1910 | |
1797 | if (!signals [w->signum - 1].head) |
1911 | if (!signals [w->signum - 1].head) |
1798 | signal (w->signum, SIG_DFL); |
1912 | signal (w->signum, SIG_DFL); |
1799 | } |
1913 | } |
… | |
… | |
1806 | #endif |
1920 | #endif |
1807 | if (expect_false (ev_is_active (w))) |
1921 | if (expect_false (ev_is_active (w))) |
1808 | return; |
1922 | return; |
1809 | |
1923 | |
1810 | ev_start (EV_A_ (W)w, 1); |
1924 | ev_start (EV_A_ (W)w, 1); |
1811 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1925 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1812 | } |
1926 | } |
1813 | |
1927 | |
1814 | void |
1928 | void |
1815 | ev_child_stop (EV_P_ ev_child *w) |
1929 | ev_child_stop (EV_P_ ev_child *w) |
1816 | { |
1930 | { |
1817 | clear_pending (EV_A_ (W)w); |
1931 | clear_pending (EV_A_ (W)w); |
1818 | if (expect_false (!ev_is_active (w))) |
1932 | if (expect_false (!ev_is_active (w))) |
1819 | return; |
1933 | return; |
1820 | |
1934 | |
1821 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1935 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
1822 | ev_stop (EV_A_ (W)w); |
1936 | ev_stop (EV_A_ (W)w); |
1823 | } |
1937 | } |
1824 | |
1938 | |
1825 | #if EV_STAT_ENABLE |
1939 | #if EV_STAT_ENABLE |
1826 | |
1940 | |
… | |
… | |
2168 | |
2282 | |
2169 | #if EV_EMBED_ENABLE |
2283 | #if EV_EMBED_ENABLE |
2170 | void noinline |
2284 | void noinline |
2171 | ev_embed_sweep (EV_P_ ev_embed *w) |
2285 | ev_embed_sweep (EV_P_ ev_embed *w) |
2172 | { |
2286 | { |
2173 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
2287 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2174 | } |
2288 | } |
2175 | |
2289 | |
2176 | static void |
2290 | static void |
2177 | embed_cb (EV_P_ ev_io *io, int revents) |
2291 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2178 | { |
2292 | { |
2179 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2293 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2180 | |
2294 | |
2181 | if (ev_cb (w)) |
2295 | if (ev_cb (w)) |
2182 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2296 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2183 | else |
2297 | else |
2184 | ev_embed_sweep (loop, w); |
2298 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2185 | } |
2299 | } |
|
|
2300 | |
|
|
2301 | static void |
|
|
2302 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2303 | { |
|
|
2304 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2305 | |
|
|
2306 | { |
|
|
2307 | struct ev_loop *loop = w->other; |
|
|
2308 | |
|
|
2309 | while (fdchangecnt) |
|
|
2310 | { |
|
|
2311 | fd_reify (EV_A); |
|
|
2312 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2313 | } |
|
|
2314 | } |
|
|
2315 | } |
|
|
2316 | |
|
|
2317 | #if 0 |
|
|
2318 | static void |
|
|
2319 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2320 | { |
|
|
2321 | ev_idle_stop (EV_A_ idle); |
|
|
2322 | } |
|
|
2323 | #endif |
2186 | |
2324 | |
2187 | void |
2325 | void |
2188 | ev_embed_start (EV_P_ ev_embed *w) |
2326 | ev_embed_start (EV_P_ ev_embed *w) |
2189 | { |
2327 | { |
2190 | if (expect_false (ev_is_active (w))) |
2328 | if (expect_false (ev_is_active (w))) |
2191 | return; |
2329 | return; |
2192 | |
2330 | |
2193 | { |
2331 | { |
2194 | struct ev_loop *loop = w->loop; |
2332 | struct ev_loop *loop = w->other; |
2195 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2333 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2196 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
2334 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2197 | } |
2335 | } |
2198 | |
2336 | |
2199 | ev_set_priority (&w->io, ev_priority (w)); |
2337 | ev_set_priority (&w->io, ev_priority (w)); |
2200 | ev_io_start (EV_A_ &w->io); |
2338 | ev_io_start (EV_A_ &w->io); |
2201 | |
2339 | |
|
|
2340 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2341 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2342 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2343 | |
|
|
2344 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2345 | |
2202 | ev_start (EV_A_ (W)w, 1); |
2346 | ev_start (EV_A_ (W)w, 1); |
2203 | } |
2347 | } |
2204 | |
2348 | |
2205 | void |
2349 | void |
2206 | ev_embed_stop (EV_P_ ev_embed *w) |
2350 | ev_embed_stop (EV_P_ ev_embed *w) |
… | |
… | |
2208 | clear_pending (EV_A_ (W)w); |
2352 | clear_pending (EV_A_ (W)w); |
2209 | if (expect_false (!ev_is_active (w))) |
2353 | if (expect_false (!ev_is_active (w))) |
2210 | return; |
2354 | return; |
2211 | |
2355 | |
2212 | ev_io_stop (EV_A_ &w->io); |
2356 | ev_io_stop (EV_A_ &w->io); |
|
|
2357 | ev_prepare_stop (EV_A_ &w->prepare); |
2213 | |
2358 | |
2214 | ev_stop (EV_A_ (W)w); |
2359 | ev_stop (EV_A_ (W)w); |
2215 | } |
2360 | } |
2216 | #endif |
2361 | #endif |
2217 | |
2362 | |
… | |
… | |
2306 | ev_timer_set (&once->to, timeout, 0.); |
2451 | ev_timer_set (&once->to, timeout, 0.); |
2307 | ev_timer_start (EV_A_ &once->to); |
2452 | ev_timer_start (EV_A_ &once->to); |
2308 | } |
2453 | } |
2309 | } |
2454 | } |
2310 | |
2455 | |
|
|
2456 | #if EV_MULTIPLICITY |
|
|
2457 | #include "ev_wrap.h" |
|
|
2458 | #endif |
|
|
2459 | |
2311 | #ifdef __cplusplus |
2460 | #ifdef __cplusplus |
2312 | } |
2461 | } |
2313 | #endif |
2462 | #endif |
2314 | |
2463 | |