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 |
35 | |
43 | |
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|
44 | /* this big block deduces configuration from config.h */ |
36 | #ifndef EV_STANDALONE |
45 | #ifndef EV_STANDALONE |
37 | # ifdef EV_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
38 | # include EV_CONFIG_H |
47 | # include EV_CONFIG_H |
39 | # else |
48 | # else |
40 | # include "config.h" |
49 | # include "config.h" |
… | |
… | |
110 | # else |
119 | # else |
111 | # define EV_USE_INOTIFY 0 |
120 | # define EV_USE_INOTIFY 0 |
112 | # endif |
121 | # endif |
113 | # endif |
122 | # endif |
114 | |
123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
115 | #endif |
132 | #endif |
116 | |
133 | |
117 | #include <math.h> |
134 | #include <math.h> |
118 | #include <stdlib.h> |
135 | #include <stdlib.h> |
119 | #include <fcntl.h> |
136 | #include <fcntl.h> |
… | |
… | |
144 | # ifndef EV_SELECT_IS_WINSOCKET |
161 | # ifndef EV_SELECT_IS_WINSOCKET |
145 | # define EV_SELECT_IS_WINSOCKET 1 |
162 | # define EV_SELECT_IS_WINSOCKET 1 |
146 | # endif |
163 | # endif |
147 | #endif |
164 | #endif |
148 | |
165 | |
149 | /**/ |
166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
150 | |
167 | |
151 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
152 | # define EV_USE_MONOTONIC 0 |
169 | # define EV_USE_MONOTONIC 0 |
153 | #endif |
170 | #endif |
154 | |
171 | |
… | |
… | |
171 | # define EV_USE_POLL 1 |
188 | # define EV_USE_POLL 1 |
172 | # endif |
189 | # endif |
173 | #endif |
190 | #endif |
174 | |
191 | |
175 | #ifndef EV_USE_EPOLL |
192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
176 | # define EV_USE_EPOLL 0 |
196 | # define EV_USE_EPOLL 0 |
|
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197 | # endif |
177 | #endif |
198 | #endif |
178 | |
199 | |
179 | #ifndef EV_USE_KQUEUE |
200 | #ifndef EV_USE_KQUEUE |
180 | # define EV_USE_KQUEUE 0 |
201 | # define EV_USE_KQUEUE 0 |
181 | #endif |
202 | #endif |
… | |
… | |
183 | #ifndef EV_USE_PORT |
204 | #ifndef EV_USE_PORT |
184 | # define EV_USE_PORT 0 |
205 | # define EV_USE_PORT 0 |
185 | #endif |
206 | #endif |
186 | |
207 | |
187 | #ifndef EV_USE_INOTIFY |
208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
188 | # define EV_USE_INOTIFY 0 |
212 | # define EV_USE_INOTIFY 0 |
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213 | # endif |
189 | #endif |
214 | #endif |
190 | |
215 | |
191 | #ifndef EV_PID_HASHSIZE |
216 | #ifndef EV_PID_HASHSIZE |
192 | # if EV_MINIMAL |
217 | # if EV_MINIMAL |
193 | # define EV_PID_HASHSIZE 1 |
218 | # define EV_PID_HASHSIZE 1 |
… | |
… | |
202 | # else |
227 | # else |
203 | # define EV_INOTIFY_HASHSIZE 16 |
228 | # define EV_INOTIFY_HASHSIZE 16 |
204 | # endif |
229 | # endif |
205 | #endif |
230 | #endif |
206 | |
231 | |
207 | /**/ |
232 | #ifndef EV_USE_EVENTFD |
|
|
233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
208 | |
241 | |
209 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
210 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
211 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
212 | #endif |
245 | #endif |
… | |
… | |
231 | # include <sys/inotify.h> |
264 | # include <sys/inotify.h> |
232 | #endif |
265 | #endif |
233 | |
266 | |
234 | #if EV_SELECT_IS_WINSOCKET |
267 | #if EV_SELECT_IS_WINSOCKET |
235 | # include <winsock.h> |
268 | # include <winsock.h> |
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269 | #endif |
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270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
236 | #endif |
281 | #endif |
237 | |
282 | |
238 | /**/ |
283 | /**/ |
239 | |
284 | |
240 | /* |
285 | /* |
… | |
… | |
280 | |
325 | |
281 | typedef ev_watcher *W; |
326 | typedef ev_watcher *W; |
282 | typedef ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
283 | typedef ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
284 | |
329 | |
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|
330 | #if EV_USE_MONOTONIC |
285 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
331 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
286 | /* giving it a reasonably high chance of working on typical architetcures */ |
332 | /* giving it a reasonably high chance of working on typical architetcures */ |
287 | static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
333 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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334 | #endif |
288 | |
335 | |
289 | #ifdef _WIN32 |
336 | #ifdef _WIN32 |
290 | # include "ev_win32.c" |
337 | # include "ev_win32.c" |
291 | #endif |
338 | #endif |
292 | |
339 | |
… | |
… | |
441 | ts.tv_sec = (time_t)delay; |
488 | ts.tv_sec = (time_t)delay; |
442 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
489 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
443 | |
490 | |
444 | nanosleep (&ts, 0); |
491 | nanosleep (&ts, 0); |
445 | #elif defined(_WIN32) |
492 | #elif defined(_WIN32) |
446 | Sleep (delay * 1e3); |
493 | Sleep ((unsigned long)(delay * 1e3)); |
447 | #else |
494 | #else |
448 | struct timeval tv; |
495 | struct timeval tv; |
449 | |
496 | |
450 | tv.tv_sec = (time_t)delay; |
497 | tv.tv_sec = (time_t)delay; |
451 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
498 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
… | |
… | |
590 | |
637 | |
591 | #if EV_SELECT_IS_WINSOCKET |
638 | #if EV_SELECT_IS_WINSOCKET |
592 | if (events) |
639 | if (events) |
593 | { |
640 | { |
594 | unsigned long argp; |
641 | unsigned long argp; |
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|
642 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
643 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
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|
644 | #else |
595 | anfd->handle = _get_osfhandle (fd); |
645 | anfd->handle = _get_osfhandle (fd); |
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|
646 | #endif |
596 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
647 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
597 | } |
648 | } |
598 | #endif |
649 | #endif |
599 | |
650 | |
600 | { |
651 | { |
… | |
… | |
749 | /*****************************************************************************/ |
800 | /*****************************************************************************/ |
750 | |
801 | |
751 | typedef struct |
802 | typedef struct |
752 | { |
803 | { |
753 | WL head; |
804 | WL head; |
754 | sig_atomic_t volatile gotsig; |
805 | EV_ATOMIC_T gotsig; |
755 | } ANSIG; |
806 | } ANSIG; |
756 | |
807 | |
757 | static ANSIG *signals; |
808 | static ANSIG *signals; |
758 | static int signalmax; |
809 | static int signalmax; |
759 | |
810 | |
760 | static int sigpipe [2]; |
811 | static EV_ATOMIC_T gotsig; |
761 | static sig_atomic_t volatile gotsig; |
|
|
762 | static ev_io sigev; |
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763 | |
812 | |
764 | void inline_size |
813 | void inline_size |
765 | signals_init (ANSIG *base, int count) |
814 | signals_init (ANSIG *base, int count) |
766 | { |
815 | { |
767 | while (count--) |
816 | while (count--) |
… | |
… | |
771 | |
820 | |
772 | ++base; |
821 | ++base; |
773 | } |
822 | } |
774 | } |
823 | } |
775 | |
824 | |
776 | static void |
825 | /*****************************************************************************/ |
777 | sighandler (int signum) |
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778 | { |
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779 | #if _WIN32 |
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780 | signal (signum, sighandler); |
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781 | #endif |
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782 | |
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783 | signals [signum - 1].gotsig = 1; |
|
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784 | |
|
|
785 | if (!gotsig) |
|
|
786 | { |
|
|
787 | int old_errno = errno; |
|
|
788 | gotsig = 1; |
|
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789 | write (sigpipe [1], &signum, 1); |
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790 | errno = old_errno; |
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791 | } |
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792 | } |
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793 | |
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794 | void noinline |
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795 | ev_feed_signal_event (EV_P_ int signum) |
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|
796 | { |
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797 | WL w; |
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798 | |
|
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799 | #if EV_MULTIPLICITY |
|
|
800 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
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801 | #endif |
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802 | |
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803 | --signum; |
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804 | |
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805 | if (signum < 0 || signum >= signalmax) |
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806 | return; |
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807 | |
|
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808 | signals [signum].gotsig = 0; |
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809 | |
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810 | for (w = signals [signum].head; w; w = w->next) |
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811 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
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812 | } |
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813 | |
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814 | static void |
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815 | sigcb (EV_P_ ev_io *iow, int revents) |
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816 | { |
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817 | int signum; |
|
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818 | |
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819 | read (sigpipe [0], &revents, 1); |
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820 | gotsig = 0; |
|
|
821 | |
|
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822 | for (signum = signalmax; signum--; ) |
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823 | if (signals [signum].gotsig) |
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824 | ev_feed_signal_event (EV_A_ signum + 1); |
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825 | } |
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826 | |
826 | |
827 | void inline_speed |
827 | void inline_speed |
828 | fd_intern (int fd) |
828 | fd_intern (int fd) |
829 | { |
829 | { |
830 | #ifdef _WIN32 |
830 | #ifdef _WIN32 |
… | |
… | |
835 | fcntl (fd, F_SETFL, O_NONBLOCK); |
835 | fcntl (fd, F_SETFL, O_NONBLOCK); |
836 | #endif |
836 | #endif |
837 | } |
837 | } |
838 | |
838 | |
839 | static void noinline |
839 | static void noinline |
840 | siginit (EV_P) |
840 | evpipe_init (EV_P) |
841 | { |
841 | { |
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842 | if (!ev_is_active (&pipeev)) |
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843 | { |
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844 | #if EV_USE_EVENTFD |
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845 | if ((evfd = eventfd (0, 0)) >= 0) |
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846 | { |
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847 | evpipe [0] = -1; |
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848 | fd_intern (evfd); |
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849 | ev_io_set (&pipeev, evfd, EV_READ); |
|
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850 | } |
|
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851 | else |
|
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852 | #endif |
|
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853 | { |
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854 | while (pipe (evpipe)) |
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855 | syserr ("(libev) error creating signal/async pipe"); |
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856 | |
842 | fd_intern (sigpipe [0]); |
857 | fd_intern (evpipe [0]); |
843 | fd_intern (sigpipe [1]); |
858 | fd_intern (evpipe [1]); |
|
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859 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
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860 | } |
844 | |
861 | |
845 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
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846 | ev_io_start (EV_A_ &sigev); |
862 | ev_io_start (EV_A_ &pipeev); |
847 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
863 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
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864 | } |
|
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865 | } |
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866 | |
|
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867 | void inline_size |
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868 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
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869 | { |
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870 | if (!*flag) |
|
|
871 | { |
|
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872 | int old_errno = errno; /* save errno because write might clobber it */ |
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873 | |
|
|
874 | *flag = 1; |
|
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875 | |
|
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876 | #if EV_USE_EVENTFD |
|
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877 | if (evfd >= 0) |
|
|
878 | { |
|
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879 | uint64_t counter = 1; |
|
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880 | write (evfd, &counter, sizeof (uint64_t)); |
|
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881 | } |
|
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882 | else |
|
|
883 | #endif |
|
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884 | write (evpipe [1], &old_errno, 1); |
|
|
885 | |
|
|
886 | errno = old_errno; |
|
|
887 | } |
|
|
888 | } |
|
|
889 | |
|
|
890 | static void |
|
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891 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
892 | { |
|
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893 | #if EV_USE_EVENTFD |
|
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894 | if (evfd >= 0) |
|
|
895 | { |
|
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896 | uint64_t counter = 1; |
|
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897 | read (evfd, &counter, sizeof (uint64_t)); |
|
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898 | } |
|
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899 | else |
|
|
900 | #endif |
|
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901 | { |
|
|
902 | char dummy; |
|
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903 | read (evpipe [0], &dummy, 1); |
|
|
904 | } |
|
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905 | |
|
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906 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
907 | { |
|
|
908 | int signum; |
|
|
909 | gotsig = 0; |
|
|
910 | |
|
|
911 | for (signum = signalmax; signum--; ) |
|
|
912 | if (signals [signum].gotsig) |
|
|
913 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
914 | } |
|
|
915 | |
|
|
916 | #if EV_ASYNC_ENABLE |
|
|
917 | if (gotasync) |
|
|
918 | { |
|
|
919 | int i; |
|
|
920 | gotasync = 0; |
|
|
921 | |
|
|
922 | for (i = asynccnt; i--; ) |
|
|
923 | if (asyncs [i]->sent) |
|
|
924 | { |
|
|
925 | asyncs [i]->sent = 0; |
|
|
926 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
927 | } |
|
|
928 | } |
|
|
929 | #endif |
848 | } |
930 | } |
849 | |
931 | |
850 | /*****************************************************************************/ |
932 | /*****************************************************************************/ |
851 | |
933 | |
|
|
934 | static void |
|
|
935 | ev_sighandler (int signum) |
|
|
936 | { |
|
|
937 | #if EV_MULTIPLICITY |
|
|
938 | struct ev_loop *loop = &default_loop_struct; |
|
|
939 | #endif |
|
|
940 | |
|
|
941 | #if _WIN32 |
|
|
942 | signal (signum, ev_sighandler); |
|
|
943 | #endif |
|
|
944 | |
|
|
945 | signals [signum - 1].gotsig = 1; |
|
|
946 | evpipe_write (EV_A_ &gotsig); |
|
|
947 | } |
|
|
948 | |
|
|
949 | void noinline |
|
|
950 | ev_feed_signal_event (EV_P_ int signum) |
|
|
951 | { |
|
|
952 | WL w; |
|
|
953 | |
|
|
954 | #if EV_MULTIPLICITY |
|
|
955 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | --signum; |
|
|
959 | |
|
|
960 | if (signum < 0 || signum >= signalmax) |
|
|
961 | return; |
|
|
962 | |
|
|
963 | signals [signum].gotsig = 0; |
|
|
964 | |
|
|
965 | for (w = signals [signum].head; w; w = w->next) |
|
|
966 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
967 | } |
|
|
968 | |
|
|
969 | /*****************************************************************************/ |
|
|
970 | |
852 | static WL childs [EV_PID_HASHSIZE]; |
971 | static WL childs [EV_PID_HASHSIZE]; |
853 | |
972 | |
854 | #ifndef _WIN32 |
973 | #ifndef _WIN32 |
855 | |
974 | |
856 | static ev_signal childev; |
975 | static ev_signal childev; |
857 | |
976 | |
|
|
977 | #ifndef WIFCONTINUED |
|
|
978 | # define WIFCONTINUED(status) 0 |
|
|
979 | #endif |
|
|
980 | |
858 | void inline_speed |
981 | void inline_speed |
859 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
982 | child_reap (EV_P_ int chain, int pid, int status) |
860 | { |
983 | { |
861 | ev_child *w; |
984 | ev_child *w; |
|
|
985 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
862 | |
986 | |
863 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
987 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
988 | { |
864 | if (w->pid == pid || !w->pid) |
989 | if ((w->pid == pid || !w->pid) |
|
|
990 | && (!traced || (w->flags & 1))) |
865 | { |
991 | { |
866 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
992 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
867 | w->rpid = pid; |
993 | w->rpid = pid; |
868 | w->rstatus = status; |
994 | w->rstatus = status; |
869 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
995 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
870 | } |
996 | } |
|
|
997 | } |
871 | } |
998 | } |
872 | |
999 | |
873 | #ifndef WCONTINUED |
1000 | #ifndef WCONTINUED |
874 | # define WCONTINUED 0 |
1001 | # define WCONTINUED 0 |
875 | #endif |
1002 | #endif |
… | |
… | |
884 | if (!WCONTINUED |
1011 | if (!WCONTINUED |
885 | || errno != EINVAL |
1012 | || errno != EINVAL |
886 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1013 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
887 | return; |
1014 | return; |
888 | |
1015 | |
889 | /* make sure we are called again until all childs have been reaped */ |
1016 | /* make sure we are called again until all children have been reaped */ |
890 | /* we need to do it this way so that the callback gets called before we continue */ |
1017 | /* we need to do it this way so that the callback gets called before we continue */ |
891 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1018 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
892 | |
1019 | |
893 | child_reap (EV_A_ sw, pid, pid, status); |
1020 | child_reap (EV_A_ pid, pid, status); |
894 | if (EV_PID_HASHSIZE > 1) |
1021 | if (EV_PID_HASHSIZE > 1) |
895 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1022 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
896 | } |
1023 | } |
897 | |
1024 | |
898 | #endif |
1025 | #endif |
899 | |
1026 | |
900 | /*****************************************************************************/ |
1027 | /*****************************************************************************/ |
… | |
… | |
978 | |
1105 | |
979 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1106 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
980 | /* please fix it and tell me how to detect the fix */ |
1107 | /* please fix it and tell me how to detect the fix */ |
981 | flags &= ~EVBACKEND_EPOLL; |
1108 | flags &= ~EVBACKEND_EPOLL; |
982 | |
1109 | |
983 | #ifdef __APPLE__ |
|
|
984 | /* is there anything thats not broken on darwin? */ |
|
|
985 | flags &= ~EVBACKEND_KQUEUE; |
|
|
986 | #endif |
|
|
987 | |
|
|
988 | return flags; |
1110 | return flags; |
989 | } |
1111 | } |
990 | |
1112 | |
991 | unsigned int |
1113 | unsigned int |
992 | ev_backend (EV_P) |
1114 | ev_backend (EV_P) |
… | |
… | |
1023 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1145 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1024 | have_monotonic = 1; |
1146 | have_monotonic = 1; |
1025 | } |
1147 | } |
1026 | #endif |
1148 | #endif |
1027 | |
1149 | |
1028 | ev_rt_now = ev_time (); |
1150 | ev_rt_now = ev_time (); |
1029 | mn_now = get_clock (); |
1151 | mn_now = get_clock (); |
1030 | now_floor = mn_now; |
1152 | now_floor = mn_now; |
1031 | rtmn_diff = ev_rt_now - mn_now; |
1153 | rtmn_diff = ev_rt_now - mn_now; |
1032 | |
1154 | |
1033 | io_blocktime = 0.; |
1155 | io_blocktime = 0.; |
1034 | timeout_blocktime = 0.; |
1156 | timeout_blocktime = 0.; |
|
|
1157 | backend = 0; |
|
|
1158 | backend_fd = -1; |
|
|
1159 | gotasync = 0; |
|
|
1160 | #if EV_USE_INOTIFY |
|
|
1161 | fs_fd = -2; |
|
|
1162 | #endif |
1035 | |
1163 | |
1036 | /* pid check not overridable via env */ |
1164 | /* pid check not overridable via env */ |
1037 | #ifndef _WIN32 |
1165 | #ifndef _WIN32 |
1038 | if (flags & EVFLAG_FORKCHECK) |
1166 | if (flags & EVFLAG_FORKCHECK) |
1039 | curpid = getpid (); |
1167 | curpid = getpid (); |
… | |
… | |
1045 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1173 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1046 | |
1174 | |
1047 | if (!(flags & 0x0000ffffUL)) |
1175 | if (!(flags & 0x0000ffffUL)) |
1048 | flags |= ev_recommended_backends (); |
1176 | flags |= ev_recommended_backends (); |
1049 | |
1177 | |
1050 | backend = 0; |
|
|
1051 | backend_fd = -1; |
|
|
1052 | #if EV_USE_INOTIFY |
|
|
1053 | fs_fd = -2; |
|
|
1054 | #endif |
|
|
1055 | |
|
|
1056 | #if EV_USE_PORT |
1178 | #if EV_USE_PORT |
1057 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1179 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1058 | #endif |
1180 | #endif |
1059 | #if EV_USE_KQUEUE |
1181 | #if EV_USE_KQUEUE |
1060 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1182 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1067 | #endif |
1189 | #endif |
1068 | #if EV_USE_SELECT |
1190 | #if EV_USE_SELECT |
1069 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1191 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1070 | #endif |
1192 | #endif |
1071 | |
1193 | |
1072 | ev_init (&sigev, sigcb); |
1194 | ev_init (&pipeev, pipecb); |
1073 | ev_set_priority (&sigev, EV_MAXPRI); |
1195 | ev_set_priority (&pipeev, EV_MAXPRI); |
1074 | } |
1196 | } |
1075 | } |
1197 | } |
1076 | |
1198 | |
1077 | static void noinline |
1199 | static void noinline |
1078 | loop_destroy (EV_P) |
1200 | loop_destroy (EV_P) |
1079 | { |
1201 | { |
1080 | int i; |
1202 | int i; |
|
|
1203 | |
|
|
1204 | if (ev_is_active (&pipeev)) |
|
|
1205 | { |
|
|
1206 | ev_ref (EV_A); /* signal watcher */ |
|
|
1207 | ev_io_stop (EV_A_ &pipeev); |
|
|
1208 | |
|
|
1209 | #if EV_USE_EVENTFD |
|
|
1210 | if (evfd >= 0) |
|
|
1211 | close (evfd); |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | if (evpipe [0] >= 0) |
|
|
1215 | { |
|
|
1216 | close (evpipe [0]); |
|
|
1217 | close (evpipe [1]); |
|
|
1218 | } |
|
|
1219 | } |
1081 | |
1220 | |
1082 | #if EV_USE_INOTIFY |
1221 | #if EV_USE_INOTIFY |
1083 | if (fs_fd >= 0) |
1222 | if (fs_fd >= 0) |
1084 | close (fs_fd); |
1223 | close (fs_fd); |
1085 | #endif |
1224 | #endif |
… | |
… | |
1122 | #if EV_FORK_ENABLE |
1261 | #if EV_FORK_ENABLE |
1123 | array_free (fork, EMPTY); |
1262 | array_free (fork, EMPTY); |
1124 | #endif |
1263 | #endif |
1125 | array_free (prepare, EMPTY); |
1264 | array_free (prepare, EMPTY); |
1126 | array_free (check, EMPTY); |
1265 | array_free (check, EMPTY); |
|
|
1266 | #if EV_ASYNC_ENABLE |
|
|
1267 | array_free (async, EMPTY); |
|
|
1268 | #endif |
1127 | |
1269 | |
1128 | backend = 0; |
1270 | backend = 0; |
1129 | } |
1271 | } |
1130 | |
1272 | |
1131 | void inline_size infy_fork (EV_P); |
1273 | void inline_size infy_fork (EV_P); |
… | |
… | |
1144 | #endif |
1286 | #endif |
1145 | #if EV_USE_INOTIFY |
1287 | #if EV_USE_INOTIFY |
1146 | infy_fork (EV_A); |
1288 | infy_fork (EV_A); |
1147 | #endif |
1289 | #endif |
1148 | |
1290 | |
1149 | if (ev_is_active (&sigev)) |
1291 | if (ev_is_active (&pipeev)) |
1150 | { |
1292 | { |
1151 | /* default loop */ |
1293 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1294 | /* while we modify the fd vars */ |
|
|
1295 | gotsig = 1; |
|
|
1296 | #if EV_ASYNC_ENABLE |
|
|
1297 | gotasync = 1; |
|
|
1298 | #endif |
1152 | |
1299 | |
1153 | ev_ref (EV_A); |
1300 | ev_ref (EV_A); |
1154 | ev_io_stop (EV_A_ &sigev); |
1301 | ev_io_stop (EV_A_ &pipeev); |
|
|
1302 | |
|
|
1303 | #if EV_USE_EVENTFD |
|
|
1304 | if (evfd >= 0) |
|
|
1305 | close (evfd); |
|
|
1306 | #endif |
|
|
1307 | |
|
|
1308 | if (evpipe [0] >= 0) |
|
|
1309 | { |
1155 | close (sigpipe [0]); |
1310 | close (evpipe [0]); |
1156 | close (sigpipe [1]); |
1311 | close (evpipe [1]); |
|
|
1312 | } |
1157 | |
1313 | |
1158 | while (pipe (sigpipe)) |
|
|
1159 | syserr ("(libev) error creating pipe"); |
|
|
1160 | |
|
|
1161 | siginit (EV_A); |
1314 | evpipe_init (EV_A); |
|
|
1315 | /* now iterate over everything, in case we missed something */ |
|
|
1316 | pipecb (EV_A_ &pipeev, EV_READ); |
1162 | } |
1317 | } |
1163 | |
1318 | |
1164 | postfork = 0; |
1319 | postfork = 0; |
1165 | } |
1320 | } |
1166 | |
1321 | |
… | |
… | |
1188 | } |
1343 | } |
1189 | |
1344 | |
1190 | void |
1345 | void |
1191 | ev_loop_fork (EV_P) |
1346 | ev_loop_fork (EV_P) |
1192 | { |
1347 | { |
1193 | postfork = 1; |
1348 | postfork = 1; /* must be in line with ev_default_fork */ |
1194 | } |
1349 | } |
1195 | |
1350 | |
1196 | #endif |
1351 | #endif |
1197 | |
1352 | |
1198 | #if EV_MULTIPLICITY |
1353 | #if EV_MULTIPLICITY |
… | |
… | |
1201 | #else |
1356 | #else |
1202 | int |
1357 | int |
1203 | ev_default_loop (unsigned int flags) |
1358 | ev_default_loop (unsigned int flags) |
1204 | #endif |
1359 | #endif |
1205 | { |
1360 | { |
1206 | if (sigpipe [0] == sigpipe [1]) |
|
|
1207 | if (pipe (sigpipe)) |
|
|
1208 | return 0; |
|
|
1209 | |
|
|
1210 | if (!ev_default_loop_ptr) |
1361 | if (!ev_default_loop_ptr) |
1211 | { |
1362 | { |
1212 | #if EV_MULTIPLICITY |
1363 | #if EV_MULTIPLICITY |
1213 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1364 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1214 | #else |
1365 | #else |
… | |
… | |
1217 | |
1368 | |
1218 | loop_init (EV_A_ flags); |
1369 | loop_init (EV_A_ flags); |
1219 | |
1370 | |
1220 | if (ev_backend (EV_A)) |
1371 | if (ev_backend (EV_A)) |
1221 | { |
1372 | { |
1222 | siginit (EV_A); |
|
|
1223 | |
|
|
1224 | #ifndef _WIN32 |
1373 | #ifndef _WIN32 |
1225 | ev_signal_init (&childev, childcb, SIGCHLD); |
1374 | ev_signal_init (&childev, childcb, SIGCHLD); |
1226 | ev_set_priority (&childev, EV_MAXPRI); |
1375 | ev_set_priority (&childev, EV_MAXPRI); |
1227 | ev_signal_start (EV_A_ &childev); |
1376 | ev_signal_start (EV_A_ &childev); |
1228 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1377 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1245 | #ifndef _WIN32 |
1394 | #ifndef _WIN32 |
1246 | ev_ref (EV_A); /* child watcher */ |
1395 | ev_ref (EV_A); /* child watcher */ |
1247 | ev_signal_stop (EV_A_ &childev); |
1396 | ev_signal_stop (EV_A_ &childev); |
1248 | #endif |
1397 | #endif |
1249 | |
1398 | |
1250 | ev_ref (EV_A); /* signal watcher */ |
|
|
1251 | ev_io_stop (EV_A_ &sigev); |
|
|
1252 | |
|
|
1253 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1254 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1255 | |
|
|
1256 | loop_destroy (EV_A); |
1399 | loop_destroy (EV_A); |
1257 | } |
1400 | } |
1258 | |
1401 | |
1259 | void |
1402 | void |
1260 | ev_default_fork (void) |
1403 | ev_default_fork (void) |
… | |
… | |
1262 | #if EV_MULTIPLICITY |
1405 | #if EV_MULTIPLICITY |
1263 | struct ev_loop *loop = ev_default_loop_ptr; |
1406 | struct ev_loop *loop = ev_default_loop_ptr; |
1264 | #endif |
1407 | #endif |
1265 | |
1408 | |
1266 | if (backend) |
1409 | if (backend) |
1267 | postfork = 1; |
1410 | postfork = 1; /* must be in line with ev_loop_fork */ |
1268 | } |
1411 | } |
1269 | |
1412 | |
1270 | /*****************************************************************************/ |
1413 | /*****************************************************************************/ |
1271 | |
1414 | |
1272 | void |
1415 | void |
… | |
… | |
1481 | static int loop_done; |
1624 | static int loop_done; |
1482 | |
1625 | |
1483 | void |
1626 | void |
1484 | ev_loop (EV_P_ int flags) |
1627 | ev_loop (EV_P_ int flags) |
1485 | { |
1628 | { |
1486 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1629 | loop_done = EVUNLOOP_CANCEL; |
1487 | ? EVUNLOOP_ONE |
|
|
1488 | : EVUNLOOP_CANCEL; |
|
|
1489 | |
1630 | |
1490 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1631 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1491 | |
1632 | |
1492 | do |
1633 | do |
1493 | { |
1634 | { |
… | |
… | |
1589 | /* queue check watchers, to be executed first */ |
1730 | /* queue check watchers, to be executed first */ |
1590 | if (expect_false (checkcnt)) |
1731 | if (expect_false (checkcnt)) |
1591 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1732 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1592 | |
1733 | |
1593 | call_pending (EV_A); |
1734 | call_pending (EV_A); |
1594 | |
|
|
1595 | } |
1735 | } |
1596 | while (expect_true (activecnt && !loop_done)); |
1736 | while (expect_true ( |
|
|
1737 | activecnt |
|
|
1738 | && !loop_done |
|
|
1739 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1740 | )); |
1597 | |
1741 | |
1598 | if (loop_done == EVUNLOOP_ONE) |
1742 | if (loop_done == EVUNLOOP_ONE) |
1599 | loop_done = EVUNLOOP_CANCEL; |
1743 | loop_done = EVUNLOOP_CANCEL; |
1600 | } |
1744 | } |
1601 | |
1745 | |
… | |
… | |
1847 | if (expect_false (ev_is_active (w))) |
1991 | if (expect_false (ev_is_active (w))) |
1848 | return; |
1992 | return; |
1849 | |
1993 | |
1850 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1994 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1851 | |
1995 | |
|
|
1996 | evpipe_init (EV_A); |
|
|
1997 | |
1852 | { |
1998 | { |
1853 | #ifndef _WIN32 |
1999 | #ifndef _WIN32 |
1854 | sigset_t full, prev; |
2000 | sigset_t full, prev; |
1855 | sigfillset (&full); |
2001 | sigfillset (&full); |
1856 | sigprocmask (SIG_SETMASK, &full, &prev); |
2002 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1867 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2013 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1868 | |
2014 | |
1869 | if (!((WL)w)->next) |
2015 | if (!((WL)w)->next) |
1870 | { |
2016 | { |
1871 | #if _WIN32 |
2017 | #if _WIN32 |
1872 | signal (w->signum, sighandler); |
2018 | signal (w->signum, ev_sighandler); |
1873 | #else |
2019 | #else |
1874 | struct sigaction sa; |
2020 | struct sigaction sa; |
1875 | sa.sa_handler = sighandler; |
2021 | sa.sa_handler = ev_sighandler; |
1876 | sigfillset (&sa.sa_mask); |
2022 | sigfillset (&sa.sa_mask); |
1877 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2023 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1878 | sigaction (w->signum, &sa, 0); |
2024 | sigaction (w->signum, &sa, 0); |
1879 | #endif |
2025 | #endif |
1880 | } |
2026 | } |
… | |
… | |
2369 | |
2515 | |
2370 | ev_stop (EV_A_ (W)w); |
2516 | ev_stop (EV_A_ (W)w); |
2371 | } |
2517 | } |
2372 | #endif |
2518 | #endif |
2373 | |
2519 | |
|
|
2520 | #if EV_ASYNC_ENABLE |
|
|
2521 | void |
|
|
2522 | ev_async_start (EV_P_ ev_async *w) |
|
|
2523 | { |
|
|
2524 | if (expect_false (ev_is_active (w))) |
|
|
2525 | return; |
|
|
2526 | |
|
|
2527 | evpipe_init (EV_A); |
|
|
2528 | |
|
|
2529 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2530 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2531 | asyncs [asynccnt - 1] = w; |
|
|
2532 | } |
|
|
2533 | |
|
|
2534 | void |
|
|
2535 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2536 | { |
|
|
2537 | clear_pending (EV_A_ (W)w); |
|
|
2538 | if (expect_false (!ev_is_active (w))) |
|
|
2539 | return; |
|
|
2540 | |
|
|
2541 | { |
|
|
2542 | int active = ((W)w)->active; |
|
|
2543 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2544 | ((W)asyncs [active - 1])->active = active; |
|
|
2545 | } |
|
|
2546 | |
|
|
2547 | ev_stop (EV_A_ (W)w); |
|
|
2548 | } |
|
|
2549 | |
|
|
2550 | void |
|
|
2551 | ev_async_send (EV_P_ ev_async *w) |
|
|
2552 | { |
|
|
2553 | w->sent = 1; |
|
|
2554 | evpipe_write (EV_A_ &gotasync); |
|
|
2555 | } |
|
|
2556 | #endif |
|
|
2557 | |
2374 | /*****************************************************************************/ |
2558 | /*****************************************************************************/ |
2375 | |
2559 | |
2376 | struct ev_once |
2560 | struct ev_once |
2377 | { |
2561 | { |
2378 | ev_io io; |
2562 | ev_io io; |