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 | * |
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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 |
… | |
… | |
205 | #endif |
225 | #endif |
206 | |
226 | |
207 | #if !EV_STAT_ENABLE |
227 | #if !EV_STAT_ENABLE |
208 | # undef EV_USE_INOTIFY |
228 | # undef EV_USE_INOTIFY |
209 | # define EV_USE_INOTIFY 0 |
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 |
210 | #endif |
236 | #endif |
211 | |
237 | |
212 | #if EV_USE_INOTIFY |
238 | #if EV_USE_INOTIFY |
213 | # include <sys/inotify.h> |
239 | # include <sys/inotify.h> |
214 | #endif |
240 | #endif |
… | |
… | |
262 | |
288 | |
263 | typedef ev_watcher *W; |
289 | typedef ev_watcher *W; |
264 | typedef ev_watcher_list *WL; |
290 | typedef ev_watcher_list *WL; |
265 | typedef ev_watcher_time *WT; |
291 | typedef ev_watcher_time *WT; |
266 | |
292 | |
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|
293 | #if EV_USE_MONOTONIC |
|
|
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 */ |
267 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
296 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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|
297 | #endif |
268 | |
298 | |
269 | #ifdef _WIN32 |
299 | #ifdef _WIN32 |
270 | # include "ev_win32.c" |
300 | # include "ev_win32.c" |
271 | #endif |
301 | #endif |
272 | |
302 | |
… | |
… | |
408 | { |
438 | { |
409 | return ev_rt_now; |
439 | return ev_rt_now; |
410 | } |
440 | } |
411 | #endif |
441 | #endif |
412 | |
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 |
|
|
458 | struct timeval tv; |
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459 | |
|
|
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 |
|
|
465 | } |
|
|
466 | } |
|
|
467 | |
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|
468 | /*****************************************************************************/ |
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|
469 | |
413 | int inline_size |
470 | int inline_size |
414 | array_nextsize (int elem, int cur, int cnt) |
471 | array_nextsize (int elem, int cur, int cnt) |
415 | { |
472 | { |
416 | int ncur = cur + 1; |
473 | int ncur = cur + 1; |
417 | |
474 | |
… | |
… | |
543 | |
600 | |
544 | #if EV_SELECT_IS_WINSOCKET |
601 | #if EV_SELECT_IS_WINSOCKET |
545 | if (events) |
602 | if (events) |
546 | { |
603 | { |
547 | 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 |
548 | anfd->handle = _get_osfhandle (fd); |
608 | anfd->handle = _get_osfhandle (fd); |
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|
609 | #endif |
549 | 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)); |
550 | } |
611 | } |
551 | #endif |
612 | #endif |
552 | |
613 | |
553 | { |
614 | { |
… | |
… | |
702 | /*****************************************************************************/ |
763 | /*****************************************************************************/ |
703 | |
764 | |
704 | typedef struct |
765 | typedef struct |
705 | { |
766 | { |
706 | WL head; |
767 | WL head; |
707 | sig_atomic_t volatile gotsig; |
768 | EV_ATOMIC_T gotsig; |
708 | } ANSIG; |
769 | } ANSIG; |
709 | |
770 | |
710 | static ANSIG *signals; |
771 | static ANSIG *signals; |
711 | static int signalmax; |
772 | static int signalmax; |
712 | |
773 | |
713 | static int sigpipe [2]; |
774 | static EV_ATOMIC_T gotsig; |
714 | static sig_atomic_t volatile gotsig; |
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715 | static ev_io sigev; |
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716 | |
775 | |
717 | void inline_size |
776 | void inline_size |
718 | signals_init (ANSIG *base, int count) |
777 | signals_init (ANSIG *base, int count) |
719 | { |
778 | { |
720 | while (count--) |
779 | while (count--) |
… | |
… | |
724 | |
783 | |
725 | ++base; |
784 | ++base; |
726 | } |
785 | } |
727 | } |
786 | } |
728 | |
787 | |
729 | static void |
788 | /*****************************************************************************/ |
730 | sighandler (int signum) |
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731 | { |
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732 | #if _WIN32 |
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733 | signal (signum, sighandler); |
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734 | #endif |
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735 | |
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736 | signals [signum - 1].gotsig = 1; |
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737 | |
|
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738 | if (!gotsig) |
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|
739 | { |
|
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740 | int old_errno = errno; |
|
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741 | gotsig = 1; |
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742 | write (sigpipe [1], &signum, 1); |
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743 | errno = old_errno; |
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744 | } |
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745 | } |
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746 | |
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747 | void noinline |
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748 | ev_feed_signal_event (EV_P_ int signum) |
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749 | { |
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750 | WL w; |
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751 | |
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752 | #if EV_MULTIPLICITY |
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753 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
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754 | #endif |
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755 | |
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756 | --signum; |
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757 | |
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758 | if (signum < 0 || signum >= signalmax) |
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759 | return; |
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760 | |
|
|
761 | signals [signum].gotsig = 0; |
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|
762 | |
|
|
763 | for (w = signals [signum].head; w; w = w->next) |
|
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764 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
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765 | } |
|
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766 | |
|
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767 | static void |
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768 | sigcb (EV_P_ ev_io *iow, int revents) |
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|
769 | { |
|
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770 | int signum; |
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771 | |
|
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772 | read (sigpipe [0], &revents, 1); |
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773 | gotsig = 0; |
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774 | |
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775 | for (signum = signalmax; signum--; ) |
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776 | if (signals [signum].gotsig) |
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777 | ev_feed_signal_event (EV_A_ signum + 1); |
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778 | } |
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779 | |
789 | |
780 | void inline_speed |
790 | void inline_speed |
781 | fd_intern (int fd) |
791 | fd_intern (int fd) |
782 | { |
792 | { |
783 | #ifdef _WIN32 |
793 | #ifdef _WIN32 |
… | |
… | |
788 | fcntl (fd, F_SETFL, O_NONBLOCK); |
798 | fcntl (fd, F_SETFL, O_NONBLOCK); |
789 | #endif |
799 | #endif |
790 | } |
800 | } |
791 | |
801 | |
792 | static void noinline |
802 | static void noinline |
793 | siginit (EV_P) |
803 | evpipe_init (EV_P) |
794 | { |
804 | { |
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805 | if (!ev_is_active (&pipeev)) |
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806 | { |
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807 | while (pipe (evpipe)) |
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808 | syserr ("(libev) error creating signal/async pipe"); |
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809 | |
795 | fd_intern (sigpipe [0]); |
810 | fd_intern (evpipe [0]); |
796 | fd_intern (sigpipe [1]); |
811 | fd_intern (evpipe [1]); |
797 | |
812 | |
798 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
813 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
799 | ev_io_start (EV_A_ &sigev); |
814 | ev_io_start (EV_A_ &pipeev); |
800 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
815 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
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816 | } |
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817 | } |
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818 | |
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819 | void inline_size |
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820 | evpipe_write (EV_P_ int sig, int async) |
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821 | { |
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822 | if (!(gotasync || gotsig)) |
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823 | { |
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824 | int old_errno = errno; |
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825 | |
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826 | if (sig) gotsig = 1; |
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827 | if (async) gotasync = 1; |
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828 | |
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829 | write (evpipe [1], &old_errno, 1); |
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830 | errno = old_errno; |
|
|
831 | } |
|
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832 | } |
|
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833 | |
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834 | static void |
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835 | pipecb (EV_P_ ev_io *iow, int revents) |
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836 | { |
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837 | { |
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838 | int dummy; |
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839 | read (evpipe [0], &dummy, 1); |
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840 | } |
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841 | |
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842 | if (gotsig) |
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843 | { |
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844 | int signum; |
|
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845 | gotsig = 0; |
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846 | |
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847 | for (signum = signalmax; signum--; ) |
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848 | if (signals [signum].gotsig) |
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849 | ev_feed_signal_event (EV_A_ signum + 1); |
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850 | } |
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851 | |
|
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852 | #if EV_ASYNC_ENABLE |
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853 | if (gotasync) |
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854 | { |
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855 | int i; |
|
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856 | gotasync = 0; |
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857 | |
|
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858 | for (i = asynccnt; i--; ) |
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859 | if (asyncs [i]->sent) |
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860 | { |
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861 | asyncs [i]->sent = 0; |
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862 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
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863 | } |
|
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864 | } |
|
|
865 | #endif |
801 | } |
866 | } |
802 | |
867 | |
803 | /*****************************************************************************/ |
868 | /*****************************************************************************/ |
804 | |
869 | |
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870 | static void |
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871 | sighandler (int signum) |
|
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872 | { |
|
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873 | #if EV_MULTIPLICITY |
|
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874 | struct ev_loop *loop = &default_loop_struct; |
|
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875 | #endif |
|
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876 | |
|
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877 | #if _WIN32 |
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878 | signal (signum, sighandler); |
|
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879 | #endif |
|
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880 | |
|
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881 | signals [signum - 1].gotsig = 1; |
|
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882 | evpipe_write (EV_A_ 1, 0); |
|
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883 | } |
|
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884 | |
|
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885 | void noinline |
|
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886 | ev_feed_signal_event (EV_P_ int signum) |
|
|
887 | { |
|
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888 | WL w; |
|
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889 | |
|
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890 | #if EV_MULTIPLICITY |
|
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891 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
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892 | #endif |
|
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893 | |
|
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894 | --signum; |
|
|
895 | |
|
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896 | if (signum < 0 || signum >= signalmax) |
|
|
897 | return; |
|
|
898 | |
|
|
899 | signals [signum].gotsig = 0; |
|
|
900 | |
|
|
901 | for (w = signals [signum].head; w; w = w->next) |
|
|
902 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
903 | } |
|
|
904 | |
|
|
905 | /*****************************************************************************/ |
|
|
906 | |
805 | static WL childs [EV_PID_HASHSIZE]; |
907 | static WL childs [EV_PID_HASHSIZE]; |
806 | |
908 | |
807 | #ifndef _WIN32 |
909 | #ifndef _WIN32 |
808 | |
910 | |
809 | static ev_signal childev; |
911 | static ev_signal childev; |
|
|
912 | |
|
|
913 | #ifndef WIFCONTINUED |
|
|
914 | # define WIFCONTINUED(status) 0 |
|
|
915 | #endif |
810 | |
916 | |
811 | void inline_speed |
917 | void inline_speed |
812 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
918 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
813 | { |
919 | { |
814 | ev_child *w; |
920 | ev_child *w; |
|
|
921 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
815 | |
922 | |
816 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
923 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
924 | { |
817 | if (w->pid == pid || !w->pid) |
925 | if ((w->pid == pid || !w->pid) |
|
|
926 | && (!traced || (w->flags & 1))) |
818 | { |
927 | { |
819 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
928 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
820 | w->rpid = pid; |
929 | w->rpid = pid; |
821 | w->rstatus = status; |
930 | w->rstatus = status; |
822 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
931 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
823 | } |
932 | } |
|
|
933 | } |
824 | } |
934 | } |
825 | |
935 | |
826 | #ifndef WCONTINUED |
936 | #ifndef WCONTINUED |
827 | # define WCONTINUED 0 |
937 | # define WCONTINUED 0 |
828 | #endif |
938 | #endif |
… | |
… | |
925 | } |
1035 | } |
926 | |
1036 | |
927 | unsigned int |
1037 | unsigned int |
928 | ev_embeddable_backends (void) |
1038 | ev_embeddable_backends (void) |
929 | { |
1039 | { |
930 | return EVBACKEND_EPOLL |
1040 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
931 | | EVBACKEND_KQUEUE |
1041 | |
932 | | EVBACKEND_PORT; |
1042 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1043 | /* please fix it and tell me how to detect the fix */ |
|
|
1044 | flags &= ~EVBACKEND_EPOLL; |
|
|
1045 | |
|
|
1046 | return flags; |
933 | } |
1047 | } |
934 | |
1048 | |
935 | unsigned int |
1049 | unsigned int |
936 | ev_backend (EV_P) |
1050 | ev_backend (EV_P) |
937 | { |
1051 | { |
… | |
… | |
940 | |
1054 | |
941 | unsigned int |
1055 | unsigned int |
942 | ev_loop_count (EV_P) |
1056 | ev_loop_count (EV_P) |
943 | { |
1057 | { |
944 | return loop_count; |
1058 | return loop_count; |
|
|
1059 | } |
|
|
1060 | |
|
|
1061 | void |
|
|
1062 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1063 | { |
|
|
1064 | io_blocktime = interval; |
|
|
1065 | } |
|
|
1066 | |
|
|
1067 | void |
|
|
1068 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1069 | { |
|
|
1070 | timeout_blocktime = interval; |
945 | } |
1071 | } |
946 | |
1072 | |
947 | static void noinline |
1073 | static void noinline |
948 | loop_init (EV_P_ unsigned int flags) |
1074 | loop_init (EV_P_ unsigned int flags) |
949 | { |
1075 | { |
… | |
… | |
955 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1081 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
956 | have_monotonic = 1; |
1082 | have_monotonic = 1; |
957 | } |
1083 | } |
958 | #endif |
1084 | #endif |
959 | |
1085 | |
960 | ev_rt_now = ev_time (); |
1086 | ev_rt_now = ev_time (); |
961 | mn_now = get_clock (); |
1087 | mn_now = get_clock (); |
962 | now_floor = mn_now; |
1088 | now_floor = mn_now; |
963 | rtmn_diff = ev_rt_now - mn_now; |
1089 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1090 | |
|
|
1091 | io_blocktime = 0.; |
|
|
1092 | timeout_blocktime = 0.; |
|
|
1093 | backend = 0; |
|
|
1094 | backend_fd = -1; |
|
|
1095 | gotasync = 0; |
|
|
1096 | #if EV_USE_INOTIFY |
|
|
1097 | fs_fd = -2; |
|
|
1098 | #endif |
964 | |
1099 | |
965 | /* pid check not overridable via env */ |
1100 | /* pid check not overridable via env */ |
966 | #ifndef _WIN32 |
1101 | #ifndef _WIN32 |
967 | if (flags & EVFLAG_FORKCHECK) |
1102 | if (flags & EVFLAG_FORKCHECK) |
968 | curpid = getpid (); |
1103 | curpid = getpid (); |
… | |
… | |
974 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1109 | flags = atoi (getenv ("LIBEV_FLAGS")); |
975 | |
1110 | |
976 | if (!(flags & 0x0000ffffUL)) |
1111 | if (!(flags & 0x0000ffffUL)) |
977 | flags |= ev_recommended_backends (); |
1112 | flags |= ev_recommended_backends (); |
978 | |
1113 | |
979 | backend = 0; |
|
|
980 | backend_fd = -1; |
|
|
981 | #if EV_USE_INOTIFY |
|
|
982 | fs_fd = -2; |
|
|
983 | #endif |
|
|
984 | |
|
|
985 | #if EV_USE_PORT |
1114 | #if EV_USE_PORT |
986 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1115 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
987 | #endif |
1116 | #endif |
988 | #if EV_USE_KQUEUE |
1117 | #if EV_USE_KQUEUE |
989 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1118 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
996 | #endif |
1125 | #endif |
997 | #if EV_USE_SELECT |
1126 | #if EV_USE_SELECT |
998 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1127 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
999 | #endif |
1128 | #endif |
1000 | |
1129 | |
1001 | ev_init (&sigev, sigcb); |
1130 | ev_init (&pipeev, pipecb); |
1002 | ev_set_priority (&sigev, EV_MAXPRI); |
1131 | ev_set_priority (&pipeev, EV_MAXPRI); |
1003 | } |
1132 | } |
1004 | } |
1133 | } |
1005 | |
1134 | |
1006 | static void noinline |
1135 | static void noinline |
1007 | loop_destroy (EV_P) |
1136 | loop_destroy (EV_P) |
1008 | { |
1137 | { |
1009 | int i; |
1138 | int i; |
|
|
1139 | |
|
|
1140 | if (ev_is_active (&pipeev)) |
|
|
1141 | { |
|
|
1142 | ev_ref (EV_A); /* signal watcher */ |
|
|
1143 | ev_io_stop (EV_A_ &pipeev); |
|
|
1144 | |
|
|
1145 | close (evpipe [0]); evpipe [0] = 0; |
|
|
1146 | close (evpipe [1]); evpipe [1] = 0; |
|
|
1147 | } |
1010 | |
1148 | |
1011 | #if EV_USE_INOTIFY |
1149 | #if EV_USE_INOTIFY |
1012 | if (fs_fd >= 0) |
1150 | if (fs_fd >= 0) |
1013 | close (fs_fd); |
1151 | close (fs_fd); |
1014 | #endif |
1152 | #endif |
… | |
… | |
1051 | #if EV_FORK_ENABLE |
1189 | #if EV_FORK_ENABLE |
1052 | array_free (fork, EMPTY); |
1190 | array_free (fork, EMPTY); |
1053 | #endif |
1191 | #endif |
1054 | array_free (prepare, EMPTY); |
1192 | array_free (prepare, EMPTY); |
1055 | array_free (check, EMPTY); |
1193 | array_free (check, EMPTY); |
|
|
1194 | #if EV_ASYNC_ENABLE |
|
|
1195 | array_free (async, EMPTY); |
|
|
1196 | #endif |
1056 | |
1197 | |
1057 | backend = 0; |
1198 | backend = 0; |
1058 | } |
1199 | } |
1059 | |
1200 | |
1060 | void inline_size infy_fork (EV_P); |
1201 | void inline_size infy_fork (EV_P); |
… | |
… | |
1073 | #endif |
1214 | #endif |
1074 | #if EV_USE_INOTIFY |
1215 | #if EV_USE_INOTIFY |
1075 | infy_fork (EV_A); |
1216 | infy_fork (EV_A); |
1076 | #endif |
1217 | #endif |
1077 | |
1218 | |
1078 | if (ev_is_active (&sigev)) |
1219 | if (ev_is_active (&pipeev)) |
1079 | { |
1220 | { |
1080 | /* default loop */ |
1221 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1222 | gotsig = gotasync = 1; |
1081 | |
1223 | |
1082 | ev_ref (EV_A); |
1224 | ev_ref (EV_A); |
1083 | ev_io_stop (EV_A_ &sigev); |
1225 | ev_io_stop (EV_A_ &pipeev); |
1084 | close (sigpipe [0]); |
1226 | close (evpipe [0]); |
1085 | close (sigpipe [1]); |
1227 | close (evpipe [1]); |
1086 | |
1228 | |
1087 | while (pipe (sigpipe)) |
|
|
1088 | syserr ("(libev) error creating pipe"); |
|
|
1089 | |
|
|
1090 | siginit (EV_A); |
1229 | evpipe_init (EV_A); |
|
|
1230 | /* now iterate over everything, in case we missed something */ |
|
|
1231 | pipecb (EV_A_ &pipeev, EV_READ); |
1091 | } |
1232 | } |
1092 | |
1233 | |
1093 | postfork = 0; |
1234 | postfork = 0; |
1094 | } |
1235 | } |
1095 | |
1236 | |
… | |
… | |
1117 | } |
1258 | } |
1118 | |
1259 | |
1119 | void |
1260 | void |
1120 | ev_loop_fork (EV_P) |
1261 | ev_loop_fork (EV_P) |
1121 | { |
1262 | { |
1122 | postfork = 1; |
1263 | postfork = 1; /* must be in line with ev_default_fork */ |
1123 | } |
1264 | } |
1124 | |
1265 | |
1125 | #endif |
1266 | #endif |
1126 | |
1267 | |
1127 | #if EV_MULTIPLICITY |
1268 | #if EV_MULTIPLICITY |
… | |
… | |
1130 | #else |
1271 | #else |
1131 | int |
1272 | int |
1132 | ev_default_loop (unsigned int flags) |
1273 | ev_default_loop (unsigned int flags) |
1133 | #endif |
1274 | #endif |
1134 | { |
1275 | { |
1135 | if (sigpipe [0] == sigpipe [1]) |
|
|
1136 | if (pipe (sigpipe)) |
|
|
1137 | return 0; |
|
|
1138 | |
|
|
1139 | if (!ev_default_loop_ptr) |
1276 | if (!ev_default_loop_ptr) |
1140 | { |
1277 | { |
1141 | #if EV_MULTIPLICITY |
1278 | #if EV_MULTIPLICITY |
1142 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1279 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1143 | #else |
1280 | #else |
… | |
… | |
1146 | |
1283 | |
1147 | loop_init (EV_A_ flags); |
1284 | loop_init (EV_A_ flags); |
1148 | |
1285 | |
1149 | if (ev_backend (EV_A)) |
1286 | if (ev_backend (EV_A)) |
1150 | { |
1287 | { |
1151 | siginit (EV_A); |
|
|
1152 | |
|
|
1153 | #ifndef _WIN32 |
1288 | #ifndef _WIN32 |
1154 | ev_signal_init (&childev, childcb, SIGCHLD); |
1289 | ev_signal_init (&childev, childcb, SIGCHLD); |
1155 | ev_set_priority (&childev, EV_MAXPRI); |
1290 | ev_set_priority (&childev, EV_MAXPRI); |
1156 | ev_signal_start (EV_A_ &childev); |
1291 | ev_signal_start (EV_A_ &childev); |
1157 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1292 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1174 | #ifndef _WIN32 |
1309 | #ifndef _WIN32 |
1175 | ev_ref (EV_A); /* child watcher */ |
1310 | ev_ref (EV_A); /* child watcher */ |
1176 | ev_signal_stop (EV_A_ &childev); |
1311 | ev_signal_stop (EV_A_ &childev); |
1177 | #endif |
1312 | #endif |
1178 | |
1313 | |
1179 | ev_ref (EV_A); /* signal watcher */ |
|
|
1180 | ev_io_stop (EV_A_ &sigev); |
|
|
1181 | |
|
|
1182 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1183 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1184 | |
|
|
1185 | loop_destroy (EV_A); |
1314 | loop_destroy (EV_A); |
1186 | } |
1315 | } |
1187 | |
1316 | |
1188 | void |
1317 | void |
1189 | ev_default_fork (void) |
1318 | ev_default_fork (void) |
… | |
… | |
1191 | #if EV_MULTIPLICITY |
1320 | #if EV_MULTIPLICITY |
1192 | struct ev_loop *loop = ev_default_loop_ptr; |
1321 | struct ev_loop *loop = ev_default_loop_ptr; |
1193 | #endif |
1322 | #endif |
1194 | |
1323 | |
1195 | if (backend) |
1324 | if (backend) |
1196 | postfork = 1; |
1325 | postfork = 1; /* must be in line with ev_loop_fork */ |
1197 | } |
1326 | } |
1198 | |
1327 | |
1199 | /*****************************************************************************/ |
1328 | /*****************************************************************************/ |
1200 | |
1329 | |
1201 | void |
1330 | void |
… | |
… | |
1456 | /* update fd-related kernel structures */ |
1585 | /* update fd-related kernel structures */ |
1457 | fd_reify (EV_A); |
1586 | fd_reify (EV_A); |
1458 | |
1587 | |
1459 | /* calculate blocking time */ |
1588 | /* calculate blocking time */ |
1460 | { |
1589 | { |
1461 | ev_tstamp block; |
1590 | ev_tstamp waittime = 0.; |
|
|
1591 | ev_tstamp sleeptime = 0.; |
1462 | |
1592 | |
1463 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
1593 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1464 | block = 0.; /* do not block at all */ |
|
|
1465 | else |
|
|
1466 | { |
1594 | { |
1467 | /* update time to cancel out callback processing overhead */ |
1595 | /* update time to cancel out callback processing overhead */ |
1468 | time_update (EV_A_ 1e100); |
1596 | time_update (EV_A_ 1e100); |
1469 | |
1597 | |
1470 | block = MAX_BLOCKTIME; |
1598 | waittime = MAX_BLOCKTIME; |
1471 | |
1599 | |
1472 | if (timercnt) |
1600 | if (timercnt) |
1473 | { |
1601 | { |
1474 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1602 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
1475 | if (block > to) block = to; |
1603 | if (waittime > to) waittime = to; |
1476 | } |
1604 | } |
1477 | |
1605 | |
1478 | #if EV_PERIODIC_ENABLE |
1606 | #if EV_PERIODIC_ENABLE |
1479 | if (periodiccnt) |
1607 | if (periodiccnt) |
1480 | { |
1608 | { |
1481 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1609 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
1482 | if (block > to) block = to; |
1610 | if (waittime > to) waittime = to; |
1483 | } |
1611 | } |
1484 | #endif |
1612 | #endif |
1485 | |
1613 | |
1486 | if (expect_false (block < 0.)) block = 0.; |
1614 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1615 | waittime = timeout_blocktime; |
|
|
1616 | |
|
|
1617 | sleeptime = waittime - backend_fudge; |
|
|
1618 | |
|
|
1619 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1620 | sleeptime = io_blocktime; |
|
|
1621 | |
|
|
1622 | if (sleeptime) |
|
|
1623 | { |
|
|
1624 | ev_sleep (sleeptime); |
|
|
1625 | waittime -= sleeptime; |
|
|
1626 | } |
1487 | } |
1627 | } |
1488 | |
1628 | |
1489 | ++loop_count; |
1629 | ++loop_count; |
1490 | backend_poll (EV_A_ block); |
1630 | backend_poll (EV_A_ waittime); |
1491 | |
1631 | |
1492 | /* update ev_rt_now, do magic */ |
1632 | /* update ev_rt_now, do magic */ |
1493 | time_update (EV_A_ block); |
1633 | time_update (EV_A_ waittime + sleeptime); |
1494 | } |
1634 | } |
1495 | |
1635 | |
1496 | /* queue pending timers and reschedule them */ |
1636 | /* queue pending timers and reschedule them */ |
1497 | timers_reify (EV_A); /* relative timers called last */ |
1637 | timers_reify (EV_A); /* relative timers called last */ |
1498 | #if EV_PERIODIC_ENABLE |
1638 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1764 | #endif |
1904 | #endif |
1765 | if (expect_false (ev_is_active (w))) |
1905 | if (expect_false (ev_is_active (w))) |
1766 | return; |
1906 | return; |
1767 | |
1907 | |
1768 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1908 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1909 | |
|
|
1910 | evpipe_init (EV_A); |
1769 | |
1911 | |
1770 | { |
1912 | { |
1771 | #ifndef _WIN32 |
1913 | #ifndef _WIN32 |
1772 | sigset_t full, prev; |
1914 | sigset_t full, prev; |
1773 | sigfillset (&full); |
1915 | sigfillset (&full); |
… | |
… | |
2193 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2335 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2194 | |
2336 | |
2195 | if (ev_cb (w)) |
2337 | if (ev_cb (w)) |
2196 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2338 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2197 | else |
2339 | else |
2198 | ev_embed_sweep (loop, w); |
2340 | ev_loop (w->other, EVLOOP_NONBLOCK); |
2199 | } |
2341 | } |
2200 | |
2342 | |
2201 | static void |
2343 | static void |
2202 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
2344 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
2203 | { |
2345 | { |
2204 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
2346 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
2205 | |
2347 | |
2206 | fd_reify (w->other); |
2348 | { |
|
|
2349 | struct ev_loop *loop = w->other; |
|
|
2350 | |
|
|
2351 | while (fdchangecnt) |
|
|
2352 | { |
|
|
2353 | fd_reify (EV_A); |
|
|
2354 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2355 | } |
|
|
2356 | } |
2207 | } |
2357 | } |
|
|
2358 | |
|
|
2359 | #if 0 |
|
|
2360 | static void |
|
|
2361 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2362 | { |
|
|
2363 | ev_idle_stop (EV_A_ idle); |
|
|
2364 | } |
|
|
2365 | #endif |
2208 | |
2366 | |
2209 | void |
2367 | void |
2210 | ev_embed_start (EV_P_ ev_embed *w) |
2368 | ev_embed_start (EV_P_ ev_embed *w) |
2211 | { |
2369 | { |
2212 | if (expect_false (ev_is_active (w))) |
2370 | if (expect_false (ev_is_active (w))) |
2213 | return; |
2371 | return; |
2214 | |
2372 | |
2215 | { |
2373 | { |
2216 | struct ev_loop *loop = w->other; |
2374 | struct ev_loop *loop = w->other; |
2217 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2375 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2218 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE); |
2376 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2219 | } |
2377 | } |
2220 | |
2378 | |
2221 | ev_set_priority (&w->io, ev_priority (w)); |
2379 | ev_set_priority (&w->io, ev_priority (w)); |
2222 | ev_io_start (EV_A_ &w->io); |
2380 | ev_io_start (EV_A_ &w->io); |
2223 | |
2381 | |
2224 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
2382 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
2225 | ev_set_priority (&w->prepare, EV_MINPRI); |
2383 | ev_set_priority (&w->prepare, EV_MINPRI); |
2226 | ev_prepare_start (EV_A_ &w->prepare); |
2384 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2385 | |
|
|
2386 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
2227 | |
2387 | |
2228 | ev_start (EV_A_ (W)w, 1); |
2388 | ev_start (EV_A_ (W)w, 1); |
2229 | } |
2389 | } |
2230 | |
2390 | |
2231 | void |
2391 | void |
… | |
… | |
2269 | |
2429 | |
2270 | ev_stop (EV_A_ (W)w); |
2430 | ev_stop (EV_A_ (W)w); |
2271 | } |
2431 | } |
2272 | #endif |
2432 | #endif |
2273 | |
2433 | |
|
|
2434 | #if EV_ASYNC_ENABLE |
|
|
2435 | void |
|
|
2436 | ev_async_start (EV_P_ ev_async *w) |
|
|
2437 | { |
|
|
2438 | if (expect_false (ev_is_active (w))) |
|
|
2439 | return; |
|
|
2440 | |
|
|
2441 | evpipe_init (EV_A); |
|
|
2442 | |
|
|
2443 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2444 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2445 | asyncs [asynccnt - 1] = w; |
|
|
2446 | } |
|
|
2447 | |
|
|
2448 | void |
|
|
2449 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2450 | { |
|
|
2451 | clear_pending (EV_A_ (W)w); |
|
|
2452 | if (expect_false (!ev_is_active (w))) |
|
|
2453 | return; |
|
|
2454 | |
|
|
2455 | { |
|
|
2456 | int active = ((W)w)->active; |
|
|
2457 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2458 | ((W)asyncs [active - 1])->active = active; |
|
|
2459 | } |
|
|
2460 | |
|
|
2461 | ev_stop (EV_A_ (W)w); |
|
|
2462 | } |
|
|
2463 | |
|
|
2464 | void |
|
|
2465 | ev_async_send (EV_P_ ev_async *w) |
|
|
2466 | { |
|
|
2467 | w->sent = 1; |
|
|
2468 | evpipe_write (EV_A_ 0, 1); |
|
|
2469 | } |
|
|
2470 | #endif |
|
|
2471 | |
2274 | /*****************************************************************************/ |
2472 | /*****************************************************************************/ |
2275 | |
2473 | |
2276 | struct ev_once |
2474 | struct ev_once |
2277 | { |
2475 | { |
2278 | ev_io io; |
2476 | ev_io io; |