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) 2007,2008,2009,2010,2011 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: |
|
|
10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
|
|
18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
27 | * |
|
|
28 | * Alternatively, the contents of this file may be used under the terms of |
|
|
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
30 | * in which case the provisions of the GPL are applicable instead of |
|
|
31 | * the above. If you wish to allow the use of your version of this file |
|
|
32 | * only under the terms of the GPL and not to allow others to use your |
|
|
33 | * version of this file under the BSD license, indicate your decision |
|
|
34 | * by deleting the provisions above and replace them with the notice |
|
|
35 | * and other provisions required by the GPL. If you do not delete the |
|
|
36 | * provisions above, a recipient may use your version of this file under |
|
|
37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
|
|
39 | |
|
|
40 | /* this big block deduces configuration from config.h */ |
31 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
|
|
42 | # ifdef EV_CONFIG_H |
|
|
43 | # include EV_CONFIG_H |
|
|
44 | # else |
32 | # include "config.h" |
45 | # include "config.h" |
|
|
46 | # endif |
|
|
47 | |
|
|
48 | #if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
|
|
52 | #endif |
|
|
53 | |
|
|
54 | # if HAVE_CLOCK_SYSCALL |
|
|
55 | # ifndef EV_USE_CLOCK_SYSCALL |
|
|
56 | # define EV_USE_CLOCK_SYSCALL 1 |
|
|
57 | # ifndef EV_USE_REALTIME |
|
|
58 | # define EV_USE_REALTIME 0 |
|
|
59 | # endif |
|
|
60 | # ifndef EV_USE_MONOTONIC |
|
|
61 | # define EV_USE_MONOTONIC 1 |
|
|
62 | # endif |
|
|
63 | # endif |
|
|
64 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
|
|
65 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
66 | # endif |
33 | |
67 | |
34 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
|
|
69 | # ifndef EV_USE_MONOTONIC |
35 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
|
|
71 | # endif |
|
|
72 | # ifndef EV_USE_REALTIME |
36 | # define EV_USE_REALTIME 1 |
73 | # define EV_USE_REALTIME 0 |
|
|
74 | # endif |
|
|
75 | # else |
|
|
76 | # ifndef EV_USE_MONOTONIC |
|
|
77 | # define EV_USE_MONOTONIC 0 |
|
|
78 | # endif |
|
|
79 | # ifndef EV_USE_REALTIME |
|
|
80 | # define EV_USE_REALTIME 0 |
|
|
81 | # endif |
37 | # endif |
82 | # endif |
38 | |
83 | |
|
|
84 | # if HAVE_NANOSLEEP |
|
|
85 | # ifndef EV_USE_NANOSLEEP |
|
|
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
87 | # endif |
|
|
88 | # else |
|
|
89 | # undef EV_USE_NANOSLEEP |
|
|
90 | # define EV_USE_NANOSLEEP 0 |
|
|
91 | # endif |
|
|
92 | |
39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
94 | # ifndef EV_USE_SELECT |
|
|
95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
|
|
96 | # endif |
|
|
97 | # else |
|
|
98 | # undef EV_USE_SELECT |
40 | # define EV_USE_SELECT 1 |
99 | # define EV_USE_SELECT 0 |
41 | # endif |
100 | # endif |
42 | |
101 | |
43 | # if HAVE_POLL && HAVE_POLL_H |
102 | # if HAVE_POLL && HAVE_POLL_H |
|
|
103 | # ifndef EV_USE_POLL |
|
|
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
105 | # endif |
|
|
106 | # else |
|
|
107 | # undef EV_USE_POLL |
44 | # define EV_USE_POLL 1 |
108 | # define EV_USE_POLL 0 |
45 | # endif |
109 | # endif |
46 | |
110 | |
47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
112 | # ifndef EV_USE_EPOLL |
|
|
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
114 | # endif |
|
|
115 | # else |
|
|
116 | # undef EV_USE_EPOLL |
48 | # define EV_USE_EPOLL 1 |
117 | # define EV_USE_EPOLL 0 |
49 | # endif |
118 | # endif |
50 | |
119 | |
51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
|
|
121 | # ifndef EV_USE_KQUEUE |
|
|
122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
|
|
123 | # endif |
|
|
124 | # else |
|
|
125 | # undef EV_USE_KQUEUE |
52 | # define EV_USE_KQUEUE 1 |
126 | # define EV_USE_KQUEUE 0 |
53 | # endif |
127 | # endif |
54 | |
128 | |
|
|
129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
130 | # ifndef EV_USE_PORT |
|
|
131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
|
|
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_PORT |
|
|
135 | # define EV_USE_PORT 0 |
55 | #endif |
136 | # endif |
56 | |
137 | |
57 | #include <math.h> |
138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
139 | # ifndef EV_USE_INOTIFY |
|
|
140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
141 | # endif |
|
|
142 | # else |
|
|
143 | # undef EV_USE_INOTIFY |
|
|
144 | # define EV_USE_INOTIFY 0 |
|
|
145 | # endif |
|
|
146 | |
|
|
147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
|
|
148 | # ifndef EV_USE_SIGNALFD |
|
|
149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
150 | # endif |
|
|
151 | # else |
|
|
152 | # undef EV_USE_SIGNALFD |
|
|
153 | # define EV_USE_SIGNALFD 0 |
|
|
154 | # endif |
|
|
155 | |
|
|
156 | # if HAVE_EVENTFD |
|
|
157 | # ifndef EV_USE_EVENTFD |
|
|
158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
159 | # endif |
|
|
160 | # else |
|
|
161 | # undef EV_USE_EVENTFD |
|
|
162 | # define EV_USE_EVENTFD 0 |
|
|
163 | # endif |
|
|
164 | |
|
|
165 | #endif |
|
|
166 | |
58 | #include <stdlib.h> |
167 | #include <stdlib.h> |
|
|
168 | #include <string.h> |
59 | #include <fcntl.h> |
169 | #include <fcntl.h> |
60 | #include <stddef.h> |
170 | #include <stddef.h> |
61 | |
171 | |
62 | #include <stdio.h> |
172 | #include <stdio.h> |
63 | |
173 | |
64 | #include <assert.h> |
174 | #include <assert.h> |
65 | #include <errno.h> |
175 | #include <errno.h> |
66 | #include <sys/types.h> |
176 | #include <sys/types.h> |
67 | #include <time.h> |
177 | #include <time.h> |
|
|
178 | #include <limits.h> |
68 | |
179 | |
69 | #include <signal.h> |
180 | #include <signal.h> |
70 | |
|
|
71 | #ifndef WIN32 |
|
|
72 | # include <unistd.h> |
|
|
73 | # include <sys/time.h> |
|
|
74 | # include <sys/wait.h> |
|
|
75 | #endif |
|
|
76 | /**/ |
|
|
77 | |
|
|
78 | #ifndef EV_USE_MONOTONIC |
|
|
79 | # define EV_USE_MONOTONIC 1 |
|
|
80 | #endif |
|
|
81 | |
|
|
82 | #ifndef EV_USE_SELECT |
|
|
83 | # define EV_USE_SELECT 1 |
|
|
84 | #endif |
|
|
85 | |
|
|
86 | #ifndef EV_USE_POLL |
|
|
87 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
|
|
88 | #endif |
|
|
89 | |
|
|
90 | #ifndef EV_USE_EPOLL |
|
|
91 | # define EV_USE_EPOLL 0 |
|
|
92 | #endif |
|
|
93 | |
|
|
94 | #ifndef EV_USE_KQUEUE |
|
|
95 | # define EV_USE_KQUEUE 0 |
|
|
96 | #endif |
|
|
97 | |
|
|
98 | #ifndef EV_USE_WIN32 |
|
|
99 | # ifdef WIN32 |
|
|
100 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
|
|
101 | # undef EV_USE_SELECT |
|
|
102 | # define EV_USE_SELECT 1 |
|
|
103 | # else |
|
|
104 | # define EV_USE_WIN32 0 |
|
|
105 | # endif |
|
|
106 | #endif |
|
|
107 | |
|
|
108 | #ifndef EV_USE_REALTIME |
|
|
109 | # define EV_USE_REALTIME 1 |
|
|
110 | #endif |
|
|
111 | |
|
|
112 | /**/ |
|
|
113 | |
|
|
114 | #ifndef CLOCK_MONOTONIC |
|
|
115 | # undef EV_USE_MONOTONIC |
|
|
116 | # define EV_USE_MONOTONIC 0 |
|
|
117 | #endif |
|
|
118 | |
|
|
119 | #ifndef CLOCK_REALTIME |
|
|
120 | # undef EV_USE_REALTIME |
|
|
121 | # define EV_USE_REALTIME 0 |
|
|
122 | #endif |
|
|
123 | |
|
|
124 | /**/ |
|
|
125 | |
|
|
126 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
|
|
127 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
|
|
128 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
129 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
|
|
130 | |
181 | |
131 | #ifdef EV_H |
182 | #ifdef EV_H |
132 | # include EV_H |
183 | # include EV_H |
133 | #else |
184 | #else |
134 | # include "ev.h" |
185 | # include "ev.h" |
135 | #endif |
186 | #endif |
136 | |
187 | |
|
|
188 | EV_CPP(extern "C" {) |
|
|
189 | |
|
|
190 | #ifndef _WIN32 |
|
|
191 | # include <sys/time.h> |
|
|
192 | # include <sys/wait.h> |
|
|
193 | # include <unistd.h> |
|
|
194 | #else |
|
|
195 | # include <io.h> |
|
|
196 | # define WIN32_LEAN_AND_MEAN |
|
|
197 | # include <windows.h> |
|
|
198 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
199 | # define EV_SELECT_IS_WINSOCKET 1 |
|
|
200 | # endif |
|
|
201 | # undef EV_AVOID_STDIO |
|
|
202 | #endif |
|
|
203 | |
|
|
204 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
|
205 | * a limit of 1024 into their select. Where people have brains, |
|
|
206 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
|
207 | * ordered to have a vacuum, or they do anything for money. |
|
|
208 | * This might help. Or not. |
|
|
209 | */ |
|
|
210 | #define _DARWIN_UNLIMITED_SELECT 1 |
|
|
211 | |
|
|
212 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
|
|
213 | |
|
|
214 | /* try to deduce the maximum number of signals on this platform */ |
|
|
215 | #if defined (EV_NSIG) |
|
|
216 | /* use what's provided */ |
|
|
217 | #elif defined (NSIG) |
|
|
218 | # define EV_NSIG (NSIG) |
|
|
219 | #elif defined(_NSIG) |
|
|
220 | # define EV_NSIG (_NSIG) |
|
|
221 | #elif defined (SIGMAX) |
|
|
222 | # define EV_NSIG (SIGMAX+1) |
|
|
223 | #elif defined (SIG_MAX) |
|
|
224 | # define EV_NSIG (SIG_MAX+1) |
|
|
225 | #elif defined (_SIG_MAX) |
|
|
226 | # define EV_NSIG (_SIG_MAX+1) |
|
|
227 | #elif defined (MAXSIG) |
|
|
228 | # define EV_NSIG (MAXSIG+1) |
|
|
229 | #elif defined (MAX_SIG) |
|
|
230 | # define EV_NSIG (MAX_SIG+1) |
|
|
231 | #elif defined (SIGARRAYSIZE) |
|
|
232 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
|
|
233 | #elif defined (_sys_nsig) |
|
|
234 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
|
235 | #else |
|
|
236 | # error "unable to find value for NSIG, please report" |
|
|
237 | /* to make it compile regardless, just remove the above line, */ |
|
|
238 | /* but consider reporting it, too! :) */ |
|
|
239 | # define EV_NSIG 65 |
|
|
240 | #endif |
|
|
241 | |
|
|
242 | #ifndef EV_USE_FLOOR |
|
|
243 | # define EV_USE_FLOOR 0 |
|
|
244 | #endif |
|
|
245 | |
|
|
246 | #ifndef EV_USE_CLOCK_SYSCALL |
|
|
247 | # if __linux && __GLIBC__ >= 2 |
|
|
248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
|
|
249 | # else |
|
|
250 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
251 | # endif |
|
|
252 | #endif |
|
|
253 | |
|
|
254 | #ifndef EV_USE_MONOTONIC |
|
|
255 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
|
|
256 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
|
|
257 | # else |
|
|
258 | # define EV_USE_MONOTONIC 0 |
|
|
259 | # endif |
|
|
260 | #endif |
|
|
261 | |
|
|
262 | #ifndef EV_USE_REALTIME |
|
|
263 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
|
|
264 | #endif |
|
|
265 | |
|
|
266 | #ifndef EV_USE_NANOSLEEP |
|
|
267 | # if _POSIX_C_SOURCE >= 199309L |
|
|
268 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
269 | # else |
|
|
270 | # define EV_USE_NANOSLEEP 0 |
|
|
271 | # endif |
|
|
272 | #endif |
|
|
273 | |
|
|
274 | #ifndef EV_USE_SELECT |
|
|
275 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
|
|
276 | #endif |
|
|
277 | |
|
|
278 | #ifndef EV_USE_POLL |
|
|
279 | # ifdef _WIN32 |
|
|
280 | # define EV_USE_POLL 0 |
|
|
281 | # else |
|
|
282 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
|
|
283 | # endif |
|
|
284 | #endif |
|
|
285 | |
|
|
286 | #ifndef EV_USE_EPOLL |
|
|
287 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
288 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
289 | # else |
|
|
290 | # define EV_USE_EPOLL 0 |
|
|
291 | # endif |
|
|
292 | #endif |
|
|
293 | |
|
|
294 | #ifndef EV_USE_KQUEUE |
|
|
295 | # define EV_USE_KQUEUE 0 |
|
|
296 | #endif |
|
|
297 | |
|
|
298 | #ifndef EV_USE_PORT |
|
|
299 | # define EV_USE_PORT 0 |
|
|
300 | #endif |
|
|
301 | |
|
|
302 | #ifndef EV_USE_INOTIFY |
|
|
303 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
304 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
305 | # else |
|
|
306 | # define EV_USE_INOTIFY 0 |
|
|
307 | # endif |
|
|
308 | #endif |
|
|
309 | |
|
|
310 | #ifndef EV_PID_HASHSIZE |
|
|
311 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
312 | #endif |
|
|
313 | |
|
|
314 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
315 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
316 | #endif |
|
|
317 | |
|
|
318 | #ifndef EV_USE_EVENTFD |
|
|
319 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
320 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
321 | # else |
|
|
322 | # define EV_USE_EVENTFD 0 |
|
|
323 | # endif |
|
|
324 | #endif |
|
|
325 | |
|
|
326 | #ifndef EV_USE_SIGNALFD |
|
|
327 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
328 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
329 | # else |
|
|
330 | # define EV_USE_SIGNALFD 0 |
|
|
331 | # endif |
|
|
332 | #endif |
|
|
333 | |
|
|
334 | #if 0 /* debugging */ |
|
|
335 | # define EV_VERIFY 3 |
|
|
336 | # define EV_USE_4HEAP 1 |
|
|
337 | # define EV_HEAP_CACHE_AT 1 |
|
|
338 | #endif |
|
|
339 | |
|
|
340 | #ifndef EV_VERIFY |
|
|
341 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
342 | #endif |
|
|
343 | |
|
|
344 | #ifndef EV_USE_4HEAP |
|
|
345 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
346 | #endif |
|
|
347 | |
|
|
348 | #ifndef EV_HEAP_CACHE_AT |
|
|
349 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
350 | #endif |
|
|
351 | |
|
|
352 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
353 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
354 | #if EV_USE_CLOCK_SYSCALL |
|
|
355 | # include <syscall.h> |
|
|
356 | # ifdef SYS_clock_gettime |
|
|
357 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
358 | # undef EV_USE_MONOTONIC |
|
|
359 | # define EV_USE_MONOTONIC 1 |
|
|
360 | # else |
|
|
361 | # undef EV_USE_CLOCK_SYSCALL |
|
|
362 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
363 | # endif |
|
|
364 | #endif |
|
|
365 | |
|
|
366 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
|
|
367 | |
|
|
368 | #ifdef _AIX |
|
|
369 | /* AIX has a completely broken poll.h header */ |
|
|
370 | # undef EV_USE_POLL |
|
|
371 | # define EV_USE_POLL 0 |
|
|
372 | #endif |
|
|
373 | |
|
|
374 | #ifndef CLOCK_MONOTONIC |
|
|
375 | # undef EV_USE_MONOTONIC |
|
|
376 | # define EV_USE_MONOTONIC 0 |
|
|
377 | #endif |
|
|
378 | |
|
|
379 | #ifndef CLOCK_REALTIME |
|
|
380 | # undef EV_USE_REALTIME |
|
|
381 | # define EV_USE_REALTIME 0 |
|
|
382 | #endif |
|
|
383 | |
|
|
384 | #if !EV_STAT_ENABLE |
|
|
385 | # undef EV_USE_INOTIFY |
|
|
386 | # define EV_USE_INOTIFY 0 |
|
|
387 | #endif |
|
|
388 | |
|
|
389 | #if !EV_USE_NANOSLEEP |
|
|
390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
391 | # if !defined(_WIN32) && !defined(__hpux) |
|
|
392 | # include <sys/select.h> |
|
|
393 | # endif |
|
|
394 | #endif |
|
|
395 | |
|
|
396 | #if EV_USE_INOTIFY |
|
|
397 | # include <sys/statfs.h> |
|
|
398 | # include <sys/inotify.h> |
|
|
399 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
400 | # ifndef IN_DONT_FOLLOW |
|
|
401 | # undef EV_USE_INOTIFY |
|
|
402 | # define EV_USE_INOTIFY 0 |
|
|
403 | # endif |
|
|
404 | #endif |
|
|
405 | |
|
|
406 | #if EV_SELECT_IS_WINSOCKET |
|
|
407 | # include <winsock.h> |
|
|
408 | #endif |
|
|
409 | |
|
|
410 | #if EV_USE_EVENTFD |
|
|
411 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
412 | # include <stdint.h> |
|
|
413 | # ifndef EFD_NONBLOCK |
|
|
414 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
415 | # endif |
|
|
416 | # ifndef EFD_CLOEXEC |
|
|
417 | # ifdef O_CLOEXEC |
|
|
418 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
419 | # else |
|
|
420 | # define EFD_CLOEXEC 02000000 |
|
|
421 | # endif |
|
|
422 | # endif |
|
|
423 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
424 | #endif |
|
|
425 | |
|
|
426 | #if EV_USE_SIGNALFD |
|
|
427 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
428 | # include <stdint.h> |
|
|
429 | # ifndef SFD_NONBLOCK |
|
|
430 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
431 | # endif |
|
|
432 | # ifndef SFD_CLOEXEC |
|
|
433 | # ifdef O_CLOEXEC |
|
|
434 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
435 | # else |
|
|
436 | # define SFD_CLOEXEC 02000000 |
|
|
437 | # endif |
|
|
438 | # endif |
|
|
439 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
440 | |
|
|
441 | struct signalfd_siginfo |
|
|
442 | { |
|
|
443 | uint32_t ssi_signo; |
|
|
444 | char pad[128 - sizeof (uint32_t)]; |
|
|
445 | }; |
|
|
446 | #endif |
|
|
447 | |
|
|
448 | /**/ |
|
|
449 | |
|
|
450 | #if EV_VERIFY >= 3 |
|
|
451 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
452 | #else |
|
|
453 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
454 | #endif |
|
|
455 | |
|
|
456 | /* |
|
|
457 | * This is used to work around floating point rounding problems. |
|
|
458 | * This value is good at least till the year 4000. |
|
|
459 | */ |
|
|
460 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
461 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
|
|
462 | |
|
|
463 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
|
|
464 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
465 | |
|
|
466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
468 | |
137 | #if __GNUC__ >= 3 |
469 | #if __GNUC__ >= 4 |
138 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
470 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
139 | # define inline inline |
471 | # define noinline __attribute__ ((noinline)) |
140 | #else |
472 | #else |
141 | # define expect(expr,value) (expr) |
473 | # define expect(expr,value) (expr) |
142 | # define inline static |
474 | # define noinline |
|
|
475 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
476 | # define inline |
|
|
477 | # endif |
143 | #endif |
478 | #endif |
144 | |
479 | |
145 | #define expect_false(expr) expect ((expr) != 0, 0) |
480 | #define expect_false(expr) expect ((expr) != 0, 0) |
146 | #define expect_true(expr) expect ((expr) != 0, 1) |
481 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
482 | #define inline_size static inline |
147 | |
483 | |
|
|
484 | #if EV_FEATURE_CODE |
|
|
485 | # define inline_speed static inline |
|
|
486 | #else |
|
|
487 | # define inline_speed static noinline |
|
|
488 | #endif |
|
|
489 | |
148 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
490 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
491 | |
|
|
492 | #if EV_MINPRI == EV_MAXPRI |
|
|
493 | # define ABSPRI(w) (((W)w), 0) |
|
|
494 | #else |
149 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
495 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
496 | #endif |
150 | |
497 | |
|
|
498 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
499 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
500 | |
151 | typedef struct ev_watcher *W; |
501 | typedef ev_watcher *W; |
152 | typedef struct ev_watcher_list *WL; |
502 | typedef ev_watcher_list *WL; |
153 | typedef struct ev_watcher_time *WT; |
503 | typedef ev_watcher_time *WT; |
154 | |
504 | |
|
|
505 | #define ev_active(w) ((W)(w))->active |
|
|
506 | #define ev_at(w) ((WT)(w))->at |
|
|
507 | |
|
|
508 | #if EV_USE_REALTIME |
|
|
509 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
510 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
511 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
512 | #endif |
|
|
513 | |
|
|
514 | #if EV_USE_MONOTONIC |
155 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
515 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
516 | #endif |
156 | |
517 | |
|
|
518 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
519 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
520 | #endif |
|
|
521 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
522 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
523 | #endif |
|
|
524 | #ifndef EV_WIN32_CLOSE_FD |
|
|
525 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
526 | #endif |
|
|
527 | |
|
|
528 | #ifdef _WIN32 |
157 | #include "ev_win32.c" |
529 | # include "ev_win32.c" |
|
|
530 | #endif |
158 | |
531 | |
159 | /*****************************************************************************/ |
532 | /*****************************************************************************/ |
160 | |
533 | |
|
|
534 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
535 | |
|
|
536 | #if EV_USE_FLOOR |
|
|
537 | # include <math.h> |
|
|
538 | # define ev_floor(v) floor (v) |
|
|
539 | #else |
|
|
540 | |
|
|
541 | #include <float.h> |
|
|
542 | |
|
|
543 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
544 | static ev_tstamp noinline |
|
|
545 | ev_floor (ev_tstamp v) |
|
|
546 | { |
|
|
547 | /* the choice of shift factor is not terribly important */ |
|
|
548 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
549 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
550 | #else |
|
|
551 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
552 | #endif |
|
|
553 | |
|
|
554 | /* argument too large for an unsigned long? */ |
|
|
555 | if (expect_false (v >= shift)) |
|
|
556 | { |
|
|
557 | ev_tstamp f; |
|
|
558 | |
|
|
559 | if (v == v - 1.) |
|
|
560 | return v; /* very large number */ |
|
|
561 | |
|
|
562 | f = shift * ev_floor (v * (1. / shift)); |
|
|
563 | return f + ev_floor (v - f); |
|
|
564 | } |
|
|
565 | |
|
|
566 | /* special treatment for negative args? */ |
|
|
567 | if (expect_false (v < 0.)) |
|
|
568 | { |
|
|
569 | ev_tstamp f = -ev_floor (-v); |
|
|
570 | |
|
|
571 | return f - (f == v ? 0 : 1); |
|
|
572 | } |
|
|
573 | |
|
|
574 | /* fits into an unsigned long */ |
|
|
575 | return (unsigned long)v; |
|
|
576 | } |
|
|
577 | |
|
|
578 | #endif |
|
|
579 | |
|
|
580 | /*****************************************************************************/ |
|
|
581 | |
|
|
582 | #ifdef __linux |
|
|
583 | # include <sys/utsname.h> |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | static unsigned int noinline |
|
|
587 | ev_linux_version (void) |
|
|
588 | { |
|
|
589 | #ifdef __linux |
|
|
590 | unsigned int v = 0; |
|
|
591 | struct utsname buf; |
|
|
592 | int i; |
|
|
593 | char *p = buf.release; |
|
|
594 | |
|
|
595 | if (uname (&buf)) |
|
|
596 | return 0; |
|
|
597 | |
|
|
598 | for (i = 3+1; --i; ) |
|
|
599 | { |
|
|
600 | unsigned int c = 0; |
|
|
601 | |
|
|
602 | for (;;) |
|
|
603 | { |
|
|
604 | if (*p >= '0' && *p <= '9') |
|
|
605 | c = c * 10 + *p++ - '0'; |
|
|
606 | else |
|
|
607 | { |
|
|
608 | p += *p == '.'; |
|
|
609 | break; |
|
|
610 | } |
|
|
611 | } |
|
|
612 | |
|
|
613 | v = (v << 8) | c; |
|
|
614 | } |
|
|
615 | |
|
|
616 | return v; |
|
|
617 | #else |
|
|
618 | return 0; |
|
|
619 | #endif |
|
|
620 | } |
|
|
621 | |
|
|
622 | /*****************************************************************************/ |
|
|
623 | |
|
|
624 | #if EV_AVOID_STDIO |
|
|
625 | static void noinline |
|
|
626 | ev_printerr (const char *msg) |
|
|
627 | { |
|
|
628 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
629 | } |
|
|
630 | #endif |
|
|
631 | |
161 | static void (*syserr_cb)(const char *msg); |
632 | static void (*syserr_cb)(const char *msg); |
162 | |
633 | |
|
|
634 | void |
163 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
635 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
164 | { |
636 | { |
165 | syserr_cb = cb; |
637 | syserr_cb = cb; |
166 | } |
638 | } |
167 | |
639 | |
168 | static void |
640 | static void noinline |
169 | syserr (const char *msg) |
641 | ev_syserr (const char *msg) |
170 | { |
642 | { |
171 | if (!msg) |
643 | if (!msg) |
172 | msg = "(libev) system error"; |
644 | msg = "(libev) system error"; |
173 | |
645 | |
174 | if (syserr_cb) |
646 | if (syserr_cb) |
175 | syserr_cb (msg); |
647 | syserr_cb (msg); |
176 | else |
648 | else |
177 | { |
649 | { |
|
|
650 | #if EV_AVOID_STDIO |
|
|
651 | ev_printerr (msg); |
|
|
652 | ev_printerr (": "); |
|
|
653 | ev_printerr (strerror (errno)); |
|
|
654 | ev_printerr ("\n"); |
|
|
655 | #else |
178 | perror (msg); |
656 | perror (msg); |
|
|
657 | #endif |
179 | abort (); |
658 | abort (); |
180 | } |
659 | } |
181 | } |
660 | } |
182 | |
661 | |
|
|
662 | static void * |
|
|
663 | ev_realloc_emul (void *ptr, long size) |
|
|
664 | { |
|
|
665 | #if __GLIBC__ |
|
|
666 | return realloc (ptr, size); |
|
|
667 | #else |
|
|
668 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
669 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
670 | * the single unix specification, so work around them here. |
|
|
671 | */ |
|
|
672 | |
|
|
673 | if (size) |
|
|
674 | return realloc (ptr, size); |
|
|
675 | |
|
|
676 | free (ptr); |
|
|
677 | return 0; |
|
|
678 | #endif |
|
|
679 | } |
|
|
680 | |
183 | static void *(*alloc)(void *ptr, long size); |
681 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
184 | |
682 | |
|
|
683 | void |
185 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
684 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
186 | { |
685 | { |
187 | alloc = cb; |
686 | alloc = cb; |
188 | } |
687 | } |
189 | |
688 | |
190 | static void * |
689 | inline_speed void * |
191 | ev_realloc (void *ptr, long size) |
690 | ev_realloc (void *ptr, long size) |
192 | { |
691 | { |
193 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
692 | ptr = alloc (ptr, size); |
194 | |
693 | |
195 | if (!ptr && size) |
694 | if (!ptr && size) |
196 | { |
695 | { |
|
|
696 | #if EV_AVOID_STDIO |
|
|
697 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
698 | #else |
197 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
699 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
700 | #endif |
198 | abort (); |
701 | abort (); |
199 | } |
702 | } |
200 | |
703 | |
201 | return ptr; |
704 | return ptr; |
202 | } |
705 | } |
… | |
… | |
204 | #define ev_malloc(size) ev_realloc (0, (size)) |
707 | #define ev_malloc(size) ev_realloc (0, (size)) |
205 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
708 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
206 | |
709 | |
207 | /*****************************************************************************/ |
710 | /*****************************************************************************/ |
208 | |
711 | |
|
|
712 | /* set in reify when reification needed */ |
|
|
713 | #define EV_ANFD_REIFY 1 |
|
|
714 | |
|
|
715 | /* file descriptor info structure */ |
209 | typedef struct |
716 | typedef struct |
210 | { |
717 | { |
211 | WL head; |
718 | WL head; |
212 | unsigned char events; |
719 | unsigned char events; /* the events watched for */ |
|
|
720 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
721 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
213 | unsigned char reify; |
722 | unsigned char unused; |
|
|
723 | #if EV_USE_EPOLL |
|
|
724 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
725 | #endif |
|
|
726 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
727 | SOCKET handle; |
|
|
728 | #endif |
|
|
729 | #if EV_USE_IOCP |
|
|
730 | OVERLAPPED or, ow; |
|
|
731 | #endif |
214 | } ANFD; |
732 | } ANFD; |
215 | |
733 | |
|
|
734 | /* stores the pending event set for a given watcher */ |
216 | typedef struct |
735 | typedef struct |
217 | { |
736 | { |
218 | W w; |
737 | W w; |
219 | int events; |
738 | int events; /* the pending event set for the given watcher */ |
220 | } ANPENDING; |
739 | } ANPENDING; |
|
|
740 | |
|
|
741 | #if EV_USE_INOTIFY |
|
|
742 | /* hash table entry per inotify-id */ |
|
|
743 | typedef struct |
|
|
744 | { |
|
|
745 | WL head; |
|
|
746 | } ANFS; |
|
|
747 | #endif |
|
|
748 | |
|
|
749 | /* Heap Entry */ |
|
|
750 | #if EV_HEAP_CACHE_AT |
|
|
751 | /* a heap element */ |
|
|
752 | typedef struct { |
|
|
753 | ev_tstamp at; |
|
|
754 | WT w; |
|
|
755 | } ANHE; |
|
|
756 | |
|
|
757 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
758 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
759 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
760 | #else |
|
|
761 | /* a heap element */ |
|
|
762 | typedef WT ANHE; |
|
|
763 | |
|
|
764 | #define ANHE_w(he) (he) |
|
|
765 | #define ANHE_at(he) (he)->at |
|
|
766 | #define ANHE_at_cache(he) |
|
|
767 | #endif |
221 | |
768 | |
222 | #if EV_MULTIPLICITY |
769 | #if EV_MULTIPLICITY |
223 | |
770 | |
224 | struct ev_loop |
771 | struct ev_loop |
225 | { |
772 | { |
|
|
773 | ev_tstamp ev_rt_now; |
|
|
774 | #define ev_rt_now ((loop)->ev_rt_now) |
226 | #define VAR(name,decl) decl; |
775 | #define VAR(name,decl) decl; |
227 | #include "ev_vars.h" |
776 | #include "ev_vars.h" |
228 | #undef VAR |
777 | #undef VAR |
229 | }; |
778 | }; |
230 | #include "ev_wrap.h" |
779 | #include "ev_wrap.h" |
231 | |
780 | |
232 | struct ev_loop default_loop_struct; |
781 | static struct ev_loop default_loop_struct; |
233 | static struct ev_loop *default_loop; |
782 | struct ev_loop *ev_default_loop_ptr; |
234 | |
783 | |
235 | #else |
784 | #else |
236 | |
785 | |
|
|
786 | ev_tstamp ev_rt_now; |
237 | #define VAR(name,decl) static decl; |
787 | #define VAR(name,decl) static decl; |
238 | #include "ev_vars.h" |
788 | #include "ev_vars.h" |
239 | #undef VAR |
789 | #undef VAR |
240 | |
790 | |
241 | static int default_loop; |
791 | static int ev_default_loop_ptr; |
242 | |
792 | |
243 | #endif |
793 | #endif |
|
|
794 | |
|
|
795 | #if EV_FEATURE_API |
|
|
796 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
797 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
798 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
799 | #else |
|
|
800 | # define EV_RELEASE_CB (void)0 |
|
|
801 | # define EV_ACQUIRE_CB (void)0 |
|
|
802 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
803 | #endif |
|
|
804 | |
|
|
805 | #define EVBREAK_RECURSE 0x80 |
244 | |
806 | |
245 | /*****************************************************************************/ |
807 | /*****************************************************************************/ |
246 | |
808 | |
247 | inline ev_tstamp |
809 | #ifndef EV_HAVE_EV_TIME |
|
|
810 | ev_tstamp |
248 | ev_time (void) |
811 | ev_time (void) |
249 | { |
812 | { |
250 | #if EV_USE_REALTIME |
813 | #if EV_USE_REALTIME |
|
|
814 | if (expect_true (have_realtime)) |
|
|
815 | { |
251 | struct timespec ts; |
816 | struct timespec ts; |
252 | clock_gettime (CLOCK_REALTIME, &ts); |
817 | clock_gettime (CLOCK_REALTIME, &ts); |
253 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
818 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
254 | #else |
819 | } |
|
|
820 | #endif |
|
|
821 | |
255 | struct timeval tv; |
822 | struct timeval tv; |
256 | gettimeofday (&tv, 0); |
823 | gettimeofday (&tv, 0); |
257 | return tv.tv_sec + tv.tv_usec * 1e-6; |
824 | return tv.tv_sec + tv.tv_usec * 1e-6; |
258 | #endif |
|
|
259 | } |
825 | } |
|
|
826 | #endif |
260 | |
827 | |
261 | inline ev_tstamp |
828 | inline_size ev_tstamp |
262 | get_clock (void) |
829 | get_clock (void) |
263 | { |
830 | { |
264 | #if EV_USE_MONOTONIC |
831 | #if EV_USE_MONOTONIC |
265 | if (expect_true (have_monotonic)) |
832 | if (expect_true (have_monotonic)) |
266 | { |
833 | { |
… | |
… | |
271 | #endif |
838 | #endif |
272 | |
839 | |
273 | return ev_time (); |
840 | return ev_time (); |
274 | } |
841 | } |
275 | |
842 | |
|
|
843 | #if EV_MULTIPLICITY |
276 | ev_tstamp |
844 | ev_tstamp |
277 | ev_now (EV_P) |
845 | ev_now (EV_P) |
278 | { |
846 | { |
279 | return rt_now; |
847 | return ev_rt_now; |
280 | } |
848 | } |
|
|
849 | #endif |
281 | |
850 | |
282 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
851 | void |
|
|
852 | ev_sleep (ev_tstamp delay) |
|
|
853 | { |
|
|
854 | if (delay > 0.) |
|
|
855 | { |
|
|
856 | #if EV_USE_NANOSLEEP |
|
|
857 | struct timespec ts; |
|
|
858 | |
|
|
859 | EV_TS_SET (ts, delay); |
|
|
860 | nanosleep (&ts, 0); |
|
|
861 | #elif defined(_WIN32) |
|
|
862 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
863 | #else |
|
|
864 | struct timeval tv; |
|
|
865 | |
|
|
866 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
867 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
868 | /* by older ones */ |
|
|
869 | EV_TV_SET (tv, delay); |
|
|
870 | select (0, 0, 0, 0, &tv); |
|
|
871 | #endif |
|
|
872 | } |
|
|
873 | } |
|
|
874 | |
|
|
875 | inline_speed int |
|
|
876 | ev_timeout_to_ms (ev_tstamp timeout) |
|
|
877 | { |
|
|
878 | int ms = timeout * 1000. + .999999; |
|
|
879 | |
|
|
880 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
|
|
881 | } |
|
|
882 | |
|
|
883 | /*****************************************************************************/ |
|
|
884 | |
|
|
885 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
886 | |
|
|
887 | /* find a suitable new size for the given array, */ |
|
|
888 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
889 | inline_size int |
|
|
890 | array_nextsize (int elem, int cur, int cnt) |
|
|
891 | { |
|
|
892 | int ncur = cur + 1; |
|
|
893 | |
|
|
894 | do |
|
|
895 | ncur <<= 1; |
|
|
896 | while (cnt > ncur); |
|
|
897 | |
|
|
898 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
899 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
900 | { |
|
|
901 | ncur *= elem; |
|
|
902 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
903 | ncur = ncur - sizeof (void *) * 4; |
|
|
904 | ncur /= elem; |
|
|
905 | } |
|
|
906 | |
|
|
907 | return ncur; |
|
|
908 | } |
|
|
909 | |
|
|
910 | static noinline void * |
|
|
911 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
912 | { |
|
|
913 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
914 | return ev_realloc (base, elem * *cur); |
|
|
915 | } |
|
|
916 | |
|
|
917 | #define array_init_zero(base,count) \ |
|
|
918 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
283 | |
919 | |
284 | #define array_needsize(type,base,cur,cnt,init) \ |
920 | #define array_needsize(type,base,cur,cnt,init) \ |
285 | if (expect_false ((cnt) > cur)) \ |
921 | if (expect_false ((cnt) > (cur))) \ |
286 | { \ |
922 | { \ |
287 | int newcnt = cur; \ |
923 | int ocur_ = (cur); \ |
288 | do \ |
924 | (base) = (type *)array_realloc \ |
289 | { \ |
925 | (sizeof (type), (base), &(cur), (cnt)); \ |
290 | newcnt = array_roundsize (type, newcnt << 1); \ |
926 | init ((base) + (ocur_), (cur) - ocur_); \ |
291 | } \ |
|
|
292 | while ((cnt) > newcnt); \ |
|
|
293 | \ |
|
|
294 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
295 | init (base + cur, newcnt - cur); \ |
|
|
296 | cur = newcnt; \ |
|
|
297 | } |
927 | } |
298 | |
928 | |
|
|
929 | #if 0 |
299 | #define array_slim(type,stem) \ |
930 | #define array_slim(type,stem) \ |
300 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
931 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
301 | { \ |
932 | { \ |
302 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
933 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
303 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
934 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
304 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
935 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
305 | } |
936 | } |
306 | |
937 | #endif |
307 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
|
|
308 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
|
|
309 | #define array_free_microshit(stem) \ |
|
|
310 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
|
|
311 | |
938 | |
312 | #define array_free(stem, idx) \ |
939 | #define array_free(stem, idx) \ |
313 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
940 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
314 | |
941 | |
315 | /*****************************************************************************/ |
942 | /*****************************************************************************/ |
316 | |
943 | |
317 | static void |
944 | /* dummy callback for pending events */ |
318 | anfds_init (ANFD *base, int count) |
945 | static void noinline |
|
|
946 | pendingcb (EV_P_ ev_prepare *w, int revents) |
319 | { |
947 | { |
320 | while (count--) |
|
|
321 | { |
|
|
322 | base->head = 0; |
|
|
323 | base->events = EV_NONE; |
|
|
324 | base->reify = 0; |
|
|
325 | |
|
|
326 | ++base; |
|
|
327 | } |
|
|
328 | } |
948 | } |
329 | |
949 | |
330 | void |
950 | void noinline |
331 | ev_feed_event (EV_P_ void *w, int revents) |
951 | ev_feed_event (EV_P_ void *w, int revents) |
332 | { |
952 | { |
333 | W w_ = (W)w; |
953 | W w_ = (W)w; |
|
|
954 | int pri = ABSPRI (w_); |
334 | |
955 | |
335 | if (w_->pending) |
956 | if (expect_false (w_->pending)) |
|
|
957 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
958 | else |
336 | { |
959 | { |
|
|
960 | w_->pending = ++pendingcnt [pri]; |
|
|
961 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
962 | pendings [pri][w_->pending - 1].w = w_; |
337 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
963 | pendings [pri][w_->pending - 1].events = revents; |
338 | return; |
|
|
339 | } |
964 | } |
340 | |
|
|
341 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
342 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
|
|
343 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
344 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
345 | } |
965 | } |
346 | |
966 | |
347 | static void |
967 | inline_speed void |
|
|
968 | feed_reverse (EV_P_ W w) |
|
|
969 | { |
|
|
970 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
971 | rfeeds [rfeedcnt++] = w; |
|
|
972 | } |
|
|
973 | |
|
|
974 | inline_size void |
|
|
975 | feed_reverse_done (EV_P_ int revents) |
|
|
976 | { |
|
|
977 | do |
|
|
978 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
979 | while (rfeedcnt); |
|
|
980 | } |
|
|
981 | |
|
|
982 | inline_speed void |
348 | queue_events (EV_P_ W *events, int eventcnt, int type) |
983 | queue_events (EV_P_ W *events, int eventcnt, int type) |
349 | { |
984 | { |
350 | int i; |
985 | int i; |
351 | |
986 | |
352 | for (i = 0; i < eventcnt; ++i) |
987 | for (i = 0; i < eventcnt; ++i) |
353 | ev_feed_event (EV_A_ events [i], type); |
988 | ev_feed_event (EV_A_ events [i], type); |
354 | } |
989 | } |
355 | |
990 | |
|
|
991 | /*****************************************************************************/ |
|
|
992 | |
356 | inline void |
993 | inline_speed void |
357 | fd_event (EV_P_ int fd, int revents) |
994 | fd_event_nocheck (EV_P_ int fd, int revents) |
358 | { |
995 | { |
359 | ANFD *anfd = anfds + fd; |
996 | ANFD *anfd = anfds + fd; |
360 | struct ev_io *w; |
997 | ev_io *w; |
361 | |
998 | |
362 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
999 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
363 | { |
1000 | { |
364 | int ev = w->events & revents; |
1001 | int ev = w->events & revents; |
365 | |
1002 | |
366 | if (ev) |
1003 | if (ev) |
367 | ev_feed_event (EV_A_ (W)w, ev); |
1004 | ev_feed_event (EV_A_ (W)w, ev); |
368 | } |
1005 | } |
369 | } |
1006 | } |
370 | |
1007 | |
|
|
1008 | /* do not submit kernel events for fds that have reify set */ |
|
|
1009 | /* because that means they changed while we were polling for new events */ |
|
|
1010 | inline_speed void |
|
|
1011 | fd_event (EV_P_ int fd, int revents) |
|
|
1012 | { |
|
|
1013 | ANFD *anfd = anfds + fd; |
|
|
1014 | |
|
|
1015 | if (expect_true (!anfd->reify)) |
|
|
1016 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1017 | } |
|
|
1018 | |
371 | void |
1019 | void |
372 | ev_feed_fd_event (EV_P_ int fd, int revents) |
1020 | ev_feed_fd_event (EV_P_ int fd, int revents) |
373 | { |
1021 | { |
|
|
1022 | if (fd >= 0 && fd < anfdmax) |
374 | fd_event (EV_A_ fd, revents); |
1023 | fd_event_nocheck (EV_A_ fd, revents); |
375 | } |
1024 | } |
376 | |
1025 | |
377 | /*****************************************************************************/ |
1026 | /* make sure the external fd watch events are in-sync */ |
378 | |
1027 | /* with the kernel/libev internal state */ |
379 | static void |
1028 | inline_size void |
380 | fd_reify (EV_P) |
1029 | fd_reify (EV_P) |
381 | { |
1030 | { |
382 | int i; |
1031 | int i; |
383 | |
1032 | |
|
|
1033 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
384 | for (i = 0; i < fdchangecnt; ++i) |
1034 | for (i = 0; i < fdchangecnt; ++i) |
385 | { |
1035 | { |
386 | int fd = fdchanges [i]; |
1036 | int fd = fdchanges [i]; |
387 | ANFD *anfd = anfds + fd; |
1037 | ANFD *anfd = anfds + fd; |
|
|
1038 | |
|
|
1039 | if (anfd->reify & EV__IOFDSET) |
|
|
1040 | { |
|
|
1041 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1042 | |
|
|
1043 | if (handle != anfd->handle) |
|
|
1044 | { |
|
|
1045 | unsigned long arg; |
|
|
1046 | |
|
|
1047 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1048 | |
|
|
1049 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1050 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1051 | anfd->events = 0; |
|
|
1052 | anfd->handle = handle; |
|
|
1053 | } |
|
|
1054 | } |
|
|
1055 | } |
|
|
1056 | #endif |
|
|
1057 | |
|
|
1058 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1059 | { |
|
|
1060 | int fd = fdchanges [i]; |
|
|
1061 | ANFD *anfd = anfds + fd; |
388 | struct ev_io *w; |
1062 | ev_io *w; |
389 | |
1063 | |
390 | int events = 0; |
1064 | unsigned char o_events = anfd->events; |
|
|
1065 | unsigned char o_reify = anfd->reify; |
391 | |
1066 | |
392 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
393 | events |= w->events; |
|
|
394 | |
|
|
395 | anfd->reify = 0; |
1067 | anfd->reify = 0; |
396 | |
1068 | |
397 | method_modify (EV_A_ fd, anfd->events, events); |
1069 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
1070 | { |
398 | anfd->events = events; |
1071 | anfd->events = 0; |
|
|
1072 | |
|
|
1073 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1074 | anfd->events |= (unsigned char)w->events; |
|
|
1075 | |
|
|
1076 | if (o_events != anfd->events) |
|
|
1077 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | if (o_reify & EV__IOFDSET) |
|
|
1081 | backend_modify (EV_A_ fd, o_events, anfd->events); |
399 | } |
1082 | } |
400 | |
1083 | |
401 | fdchangecnt = 0; |
1084 | fdchangecnt = 0; |
402 | } |
1085 | } |
403 | |
1086 | |
404 | static void |
1087 | /* something about the given fd changed */ |
|
|
1088 | inline_size void |
405 | fd_change (EV_P_ int fd) |
1089 | fd_change (EV_P_ int fd, int flags) |
406 | { |
1090 | { |
407 | if (anfds [fd].reify) |
1091 | unsigned char reify = anfds [fd].reify; |
408 | return; |
|
|
409 | |
|
|
410 | anfds [fd].reify = 1; |
1092 | anfds [fd].reify |= flags; |
411 | |
1093 | |
|
|
1094 | if (expect_true (!reify)) |
|
|
1095 | { |
412 | ++fdchangecnt; |
1096 | ++fdchangecnt; |
413 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
1097 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
414 | fdchanges [fdchangecnt - 1] = fd; |
1098 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1099 | } |
415 | } |
1100 | } |
416 | |
1101 | |
417 | static void |
1102 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1103 | inline_speed void |
418 | fd_kill (EV_P_ int fd) |
1104 | fd_kill (EV_P_ int fd) |
419 | { |
1105 | { |
420 | struct ev_io *w; |
1106 | ev_io *w; |
421 | |
1107 | |
422 | while ((w = (struct ev_io *)anfds [fd].head)) |
1108 | while ((w = (ev_io *)anfds [fd].head)) |
423 | { |
1109 | { |
424 | ev_io_stop (EV_A_ w); |
1110 | ev_io_stop (EV_A_ w); |
425 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1111 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
426 | } |
1112 | } |
427 | } |
1113 | } |
428 | |
1114 | |
429 | static int |
1115 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1116 | inline_size int |
430 | fd_valid (int fd) |
1117 | fd_valid (int fd) |
431 | { |
1118 | { |
432 | #ifdef WIN32 |
1119 | #ifdef _WIN32 |
433 | return !!win32_get_osfhandle (fd); |
1120 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
434 | #else |
1121 | #else |
435 | return fcntl (fd, F_GETFD) != -1; |
1122 | return fcntl (fd, F_GETFD) != -1; |
436 | #endif |
1123 | #endif |
437 | } |
1124 | } |
438 | |
1125 | |
439 | /* called on EBADF to verify fds */ |
1126 | /* called on EBADF to verify fds */ |
440 | static void |
1127 | static void noinline |
441 | fd_ebadf (EV_P) |
1128 | fd_ebadf (EV_P) |
442 | { |
1129 | { |
443 | int fd; |
1130 | int fd; |
444 | |
1131 | |
445 | for (fd = 0; fd < anfdmax; ++fd) |
1132 | for (fd = 0; fd < anfdmax; ++fd) |
446 | if (anfds [fd].events) |
1133 | if (anfds [fd].events) |
447 | if (!fd_valid (fd) == -1 && errno == EBADF) |
1134 | if (!fd_valid (fd) && errno == EBADF) |
448 | fd_kill (EV_A_ fd); |
1135 | fd_kill (EV_A_ fd); |
449 | } |
1136 | } |
450 | |
1137 | |
451 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1138 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
452 | static void |
1139 | static void noinline |
453 | fd_enomem (EV_P) |
1140 | fd_enomem (EV_P) |
454 | { |
1141 | { |
455 | int fd; |
1142 | int fd; |
456 | |
1143 | |
457 | for (fd = anfdmax; fd--; ) |
1144 | for (fd = anfdmax; fd--; ) |
458 | if (anfds [fd].events) |
1145 | if (anfds [fd].events) |
459 | { |
1146 | { |
460 | fd_kill (EV_A_ fd); |
1147 | fd_kill (EV_A_ fd); |
461 | return; |
1148 | break; |
462 | } |
1149 | } |
463 | } |
1150 | } |
464 | |
1151 | |
465 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
1152 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
466 | static void |
1153 | static void noinline |
467 | fd_rearm_all (EV_P) |
1154 | fd_rearm_all (EV_P) |
468 | { |
1155 | { |
469 | int fd; |
1156 | int fd; |
470 | |
1157 | |
471 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
472 | for (fd = 0; fd < anfdmax; ++fd) |
1158 | for (fd = 0; fd < anfdmax; ++fd) |
473 | if (anfds [fd].events) |
1159 | if (anfds [fd].events) |
474 | { |
1160 | { |
475 | anfds [fd].events = 0; |
1161 | anfds [fd].events = 0; |
476 | fd_change (EV_A_ fd); |
1162 | anfds [fd].emask = 0; |
|
|
1163 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
477 | } |
1164 | } |
478 | } |
1165 | } |
479 | |
1166 | |
|
|
1167 | /* used to prepare libev internal fd's */ |
|
|
1168 | /* this is not fork-safe */ |
|
|
1169 | inline_speed void |
|
|
1170 | fd_intern (int fd) |
|
|
1171 | { |
|
|
1172 | #ifdef _WIN32 |
|
|
1173 | unsigned long arg = 1; |
|
|
1174 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1175 | #else |
|
|
1176 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1177 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1178 | #endif |
|
|
1179 | } |
|
|
1180 | |
480 | /*****************************************************************************/ |
1181 | /*****************************************************************************/ |
481 | |
1182 | |
|
|
1183 | /* |
|
|
1184 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1185 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1186 | * the branching factor of the d-tree. |
|
|
1187 | */ |
|
|
1188 | |
|
|
1189 | /* |
|
|
1190 | * at the moment we allow libev the luxury of two heaps, |
|
|
1191 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1192 | * which is more cache-efficient. |
|
|
1193 | * the difference is about 5% with 50000+ watchers. |
|
|
1194 | */ |
|
|
1195 | #if EV_USE_4HEAP |
|
|
1196 | |
|
|
1197 | #define DHEAP 4 |
|
|
1198 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1199 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1200 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1201 | |
|
|
1202 | /* away from the root */ |
|
|
1203 | inline_speed void |
|
|
1204 | downheap (ANHE *heap, int N, int k) |
|
|
1205 | { |
|
|
1206 | ANHE he = heap [k]; |
|
|
1207 | ANHE *E = heap + N + HEAP0; |
|
|
1208 | |
|
|
1209 | for (;;) |
|
|
1210 | { |
|
|
1211 | ev_tstamp minat; |
|
|
1212 | ANHE *minpos; |
|
|
1213 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1214 | |
|
|
1215 | /* find minimum child */ |
|
|
1216 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1217 | { |
|
|
1218 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1219 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1220 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1221 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1222 | } |
|
|
1223 | else if (pos < E) |
|
|
1224 | { |
|
|
1225 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1226 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1227 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1228 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1229 | } |
|
|
1230 | else |
|
|
1231 | break; |
|
|
1232 | |
|
|
1233 | if (ANHE_at (he) <= minat) |
|
|
1234 | break; |
|
|
1235 | |
|
|
1236 | heap [k] = *minpos; |
|
|
1237 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1238 | |
|
|
1239 | k = minpos - heap; |
|
|
1240 | } |
|
|
1241 | |
|
|
1242 | heap [k] = he; |
|
|
1243 | ev_active (ANHE_w (he)) = k; |
|
|
1244 | } |
|
|
1245 | |
|
|
1246 | #else /* 4HEAP */ |
|
|
1247 | |
|
|
1248 | #define HEAP0 1 |
|
|
1249 | #define HPARENT(k) ((k) >> 1) |
|
|
1250 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1251 | |
|
|
1252 | /* away from the root */ |
|
|
1253 | inline_speed void |
|
|
1254 | downheap (ANHE *heap, int N, int k) |
|
|
1255 | { |
|
|
1256 | ANHE he = heap [k]; |
|
|
1257 | |
|
|
1258 | for (;;) |
|
|
1259 | { |
|
|
1260 | int c = k << 1; |
|
|
1261 | |
|
|
1262 | if (c >= N + HEAP0) |
|
|
1263 | break; |
|
|
1264 | |
|
|
1265 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1266 | ? 1 : 0; |
|
|
1267 | |
|
|
1268 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1269 | break; |
|
|
1270 | |
|
|
1271 | heap [k] = heap [c]; |
|
|
1272 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1273 | |
|
|
1274 | k = c; |
|
|
1275 | } |
|
|
1276 | |
|
|
1277 | heap [k] = he; |
|
|
1278 | ev_active (ANHE_w (he)) = k; |
|
|
1279 | } |
|
|
1280 | #endif |
|
|
1281 | |
|
|
1282 | /* towards the root */ |
|
|
1283 | inline_speed void |
|
|
1284 | upheap (ANHE *heap, int k) |
|
|
1285 | { |
|
|
1286 | ANHE he = heap [k]; |
|
|
1287 | |
|
|
1288 | for (;;) |
|
|
1289 | { |
|
|
1290 | int p = HPARENT (k); |
|
|
1291 | |
|
|
1292 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1293 | break; |
|
|
1294 | |
|
|
1295 | heap [k] = heap [p]; |
|
|
1296 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1297 | k = p; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | heap [k] = he; |
|
|
1301 | ev_active (ANHE_w (he)) = k; |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | /* move an element suitably so it is in a correct place */ |
|
|
1305 | inline_size void |
|
|
1306 | adjustheap (ANHE *heap, int N, int k) |
|
|
1307 | { |
|
|
1308 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1309 | upheap (heap, k); |
|
|
1310 | else |
|
|
1311 | downheap (heap, N, k); |
|
|
1312 | } |
|
|
1313 | |
|
|
1314 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1315 | inline_size void |
|
|
1316 | reheap (ANHE *heap, int N) |
|
|
1317 | { |
|
|
1318 | int i; |
|
|
1319 | |
|
|
1320 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1321 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1322 | for (i = 0; i < N; ++i) |
|
|
1323 | upheap (heap, i + HEAP0); |
|
|
1324 | } |
|
|
1325 | |
|
|
1326 | /*****************************************************************************/ |
|
|
1327 | |
|
|
1328 | /* associate signal watchers to a signal signal */ |
|
|
1329 | typedef struct |
|
|
1330 | { |
|
|
1331 | EV_ATOMIC_T pending; |
|
|
1332 | #if EV_MULTIPLICITY |
|
|
1333 | EV_P; |
|
|
1334 | #endif |
|
|
1335 | WL head; |
|
|
1336 | } ANSIG; |
|
|
1337 | |
|
|
1338 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1339 | |
|
|
1340 | /*****************************************************************************/ |
|
|
1341 | |
|
|
1342 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1343 | |
|
|
1344 | static void noinline |
|
|
1345 | evpipe_init (EV_P) |
|
|
1346 | { |
|
|
1347 | if (!ev_is_active (&pipe_w)) |
|
|
1348 | { |
|
|
1349 | # if EV_USE_EVENTFD |
|
|
1350 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1351 | if (evfd < 0 && errno == EINVAL) |
|
|
1352 | evfd = eventfd (0, 0); |
|
|
1353 | |
|
|
1354 | if (evfd >= 0) |
|
|
1355 | { |
|
|
1356 | evpipe [0] = -1; |
|
|
1357 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1358 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1359 | } |
|
|
1360 | else |
|
|
1361 | # endif |
|
|
1362 | { |
|
|
1363 | while (pipe (evpipe)) |
|
|
1364 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1365 | |
|
|
1366 | fd_intern (evpipe [0]); |
|
|
1367 | fd_intern (evpipe [1]); |
|
|
1368 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1369 | } |
|
|
1370 | |
|
|
1371 | ev_io_start (EV_A_ &pipe_w); |
|
|
1372 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1373 | } |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | inline_size void |
|
|
1377 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1378 | { |
|
|
1379 | if (!*flag) |
|
|
1380 | { |
|
|
1381 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1382 | char dummy; |
|
|
1383 | |
|
|
1384 | *flag = 1; |
|
|
1385 | |
|
|
1386 | #if EV_USE_EVENTFD |
|
|
1387 | if (evfd >= 0) |
|
|
1388 | { |
|
|
1389 | uint64_t counter = 1; |
|
|
1390 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1391 | } |
|
|
1392 | else |
|
|
1393 | #endif |
|
|
1394 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1395 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1396 | /* so when you think this write should be a send instead, please find out */ |
|
|
1397 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1398 | /* tell me. thank you. */ |
|
|
1399 | write (evpipe [1], &dummy, 1); |
|
|
1400 | |
|
|
1401 | errno = old_errno; |
|
|
1402 | } |
|
|
1403 | } |
|
|
1404 | |
|
|
1405 | /* called whenever the libev signal pipe */ |
|
|
1406 | /* got some events (signal, async) */ |
482 | static void |
1407 | static void |
483 | upheap (WT *heap, int k) |
1408 | pipecb (EV_P_ ev_io *iow, int revents) |
484 | { |
1409 | { |
485 | WT w = heap [k]; |
1410 | int i; |
486 | |
1411 | |
487 | while (k && heap [k >> 1]->at > w->at) |
1412 | #if EV_USE_EVENTFD |
488 | { |
1413 | if (evfd >= 0) |
489 | heap [k] = heap [k >> 1]; |
|
|
490 | ((W)heap [k])->active = k + 1; |
|
|
491 | k >>= 1; |
|
|
492 | } |
1414 | { |
|
|
1415 | uint64_t counter; |
|
|
1416 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1417 | } |
|
|
1418 | else |
|
|
1419 | #endif |
|
|
1420 | { |
|
|
1421 | char dummy; |
|
|
1422 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
|
|
1423 | read (evpipe [0], &dummy, 1); |
|
|
1424 | } |
493 | |
1425 | |
494 | heap [k] = w; |
1426 | #if EV_SIGNAL_ENABLE |
495 | ((W)heap [k])->active = k + 1; |
1427 | if (sig_pending) |
|
|
1428 | { |
|
|
1429 | sig_pending = 0; |
496 | |
1430 | |
|
|
1431 | for (i = EV_NSIG - 1; i--; ) |
|
|
1432 | if (expect_false (signals [i].pending)) |
|
|
1433 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1434 | } |
|
|
1435 | #endif |
|
|
1436 | |
|
|
1437 | #if EV_ASYNC_ENABLE |
|
|
1438 | if (async_pending) |
|
|
1439 | { |
|
|
1440 | async_pending = 0; |
|
|
1441 | |
|
|
1442 | for (i = asynccnt; i--; ) |
|
|
1443 | if (asyncs [i]->sent) |
|
|
1444 | { |
|
|
1445 | asyncs [i]->sent = 0; |
|
|
1446 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1447 | } |
|
|
1448 | } |
|
|
1449 | #endif |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | /*****************************************************************************/ |
|
|
1453 | |
|
|
1454 | void |
|
|
1455 | ev_feed_signal (int signum) |
|
|
1456 | { |
|
|
1457 | #if EV_MULTIPLICITY |
|
|
1458 | EV_P = signals [signum - 1].loop; |
|
|
1459 | |
|
|
1460 | if (!EV_A) |
|
|
1461 | return; |
|
|
1462 | #endif |
|
|
1463 | |
|
|
1464 | signals [signum - 1].pending = 1; |
|
|
1465 | evpipe_write (EV_A_ &sig_pending); |
497 | } |
1466 | } |
498 | |
1467 | |
499 | static void |
1468 | static void |
500 | downheap (WT *heap, int N, int k) |
|
|
501 | { |
|
|
502 | WT w = heap [k]; |
|
|
503 | |
|
|
504 | while (k < (N >> 1)) |
|
|
505 | { |
|
|
506 | int j = k << 1; |
|
|
507 | |
|
|
508 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
509 | ++j; |
|
|
510 | |
|
|
511 | if (w->at <= heap [j]->at) |
|
|
512 | break; |
|
|
513 | |
|
|
514 | heap [k] = heap [j]; |
|
|
515 | ((W)heap [k])->active = k + 1; |
|
|
516 | k = j; |
|
|
517 | } |
|
|
518 | |
|
|
519 | heap [k] = w; |
|
|
520 | ((W)heap [k])->active = k + 1; |
|
|
521 | } |
|
|
522 | |
|
|
523 | /*****************************************************************************/ |
|
|
524 | |
|
|
525 | typedef struct |
|
|
526 | { |
|
|
527 | WL head; |
|
|
528 | sig_atomic_t volatile gotsig; |
|
|
529 | } ANSIG; |
|
|
530 | |
|
|
531 | static ANSIG *signals; |
|
|
532 | static int signalmax; |
|
|
533 | |
|
|
534 | static int sigpipe [2]; |
|
|
535 | static sig_atomic_t volatile gotsig; |
|
|
536 | static struct ev_io sigev; |
|
|
537 | |
|
|
538 | static void |
|
|
539 | signals_init (ANSIG *base, int count) |
|
|
540 | { |
|
|
541 | while (count--) |
|
|
542 | { |
|
|
543 | base->head = 0; |
|
|
544 | base->gotsig = 0; |
|
|
545 | |
|
|
546 | ++base; |
|
|
547 | } |
|
|
548 | } |
|
|
549 | |
|
|
550 | static void |
|
|
551 | sighandler (int signum) |
1469 | ev_sighandler (int signum) |
552 | { |
1470 | { |
553 | #if WIN32 |
|
|
554 | signal (signum, sighandler); |
|
|
555 | #endif |
|
|
556 | |
|
|
557 | signals [signum - 1].gotsig = 1; |
|
|
558 | |
|
|
559 | if (!gotsig) |
|
|
560 | { |
|
|
561 | int old_errno = errno; |
|
|
562 | gotsig = 1; |
|
|
563 | #ifdef WIN32 |
1471 | #ifdef _WIN32 |
564 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
1472 | signal (signum, ev_sighandler); |
565 | #else |
|
|
566 | write (sigpipe [1], &signum, 1); |
|
|
567 | #endif |
1473 | #endif |
568 | errno = old_errno; |
|
|
569 | } |
|
|
570 | } |
|
|
571 | |
1474 | |
572 | void |
1475 | ev_feed_signal (signum); |
|
|
1476 | } |
|
|
1477 | |
|
|
1478 | void noinline |
573 | ev_feed_signal_event (EV_P_ int signum) |
1479 | ev_feed_signal_event (EV_P_ int signum) |
574 | { |
1480 | { |
575 | WL w; |
1481 | WL w; |
576 | |
1482 | |
|
|
1483 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1484 | return; |
|
|
1485 | |
|
|
1486 | --signum; |
|
|
1487 | |
577 | #if EV_MULTIPLICITY |
1488 | #if EV_MULTIPLICITY |
578 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
1489 | /* it is permissible to try to feed a signal to the wrong loop */ |
579 | #endif |
1490 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
580 | |
1491 | |
581 | --signum; |
1492 | if (expect_false (signals [signum].loop != EV_A)) |
582 | |
|
|
583 | if (signum < 0 || signum >= signalmax) |
|
|
584 | return; |
1493 | return; |
|
|
1494 | #endif |
585 | |
1495 | |
586 | signals [signum].gotsig = 0; |
1496 | signals [signum].pending = 0; |
587 | |
1497 | |
588 | for (w = signals [signum].head; w; w = w->next) |
1498 | for (w = signals [signum].head; w; w = w->next) |
589 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1499 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
590 | } |
1500 | } |
591 | |
1501 | |
|
|
1502 | #if EV_USE_SIGNALFD |
592 | static void |
1503 | static void |
593 | sigcb (EV_P_ struct ev_io *iow, int revents) |
1504 | sigfdcb (EV_P_ ev_io *iow, int revents) |
594 | { |
1505 | { |
595 | int signum; |
1506 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
596 | |
1507 | |
597 | #ifdef WIN32 |
1508 | for (;;) |
598 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
1509 | { |
599 | #else |
1510 | ssize_t res = read (sigfd, si, sizeof (si)); |
600 | read (sigpipe [0], &revents, 1); |
|
|
601 | #endif |
|
|
602 | gotsig = 0; |
|
|
603 | |
1511 | |
604 | for (signum = signalmax; signum--; ) |
1512 | /* not ISO-C, as res might be -1, but works with SuS */ |
605 | if (signals [signum].gotsig) |
1513 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
606 | ev_feed_signal_event (EV_A_ signum + 1); |
1514 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
607 | } |
|
|
608 | |
1515 | |
609 | static void |
1516 | if (res < (ssize_t)sizeof (si)) |
610 | siginit (EV_P) |
1517 | break; |
611 | { |
1518 | } |
612 | #ifndef WIN32 |
|
|
613 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
614 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
615 | |
|
|
616 | /* rather than sort out wether we really need nb, set it */ |
|
|
617 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
618 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
622 | ev_io_start (EV_A_ &sigev); |
|
|
623 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
624 | } |
1519 | } |
|
|
1520 | #endif |
|
|
1521 | |
|
|
1522 | #endif |
625 | |
1523 | |
626 | /*****************************************************************************/ |
1524 | /*****************************************************************************/ |
627 | |
1525 | |
628 | static struct ev_child *childs [PID_HASHSIZE]; |
1526 | #if EV_CHILD_ENABLE |
|
|
1527 | static WL childs [EV_PID_HASHSIZE]; |
629 | |
1528 | |
630 | #ifndef WIN32 |
|
|
631 | |
|
|
632 | static struct ev_signal childev; |
1529 | static ev_signal childev; |
|
|
1530 | |
|
|
1531 | #ifndef WIFCONTINUED |
|
|
1532 | # define WIFCONTINUED(status) 0 |
|
|
1533 | #endif |
|
|
1534 | |
|
|
1535 | /* handle a single child status event */ |
|
|
1536 | inline_speed void |
|
|
1537 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1538 | { |
|
|
1539 | ev_child *w; |
|
|
1540 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1541 | |
|
|
1542 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1543 | { |
|
|
1544 | if ((w->pid == pid || !w->pid) |
|
|
1545 | && (!traced || (w->flags & 1))) |
|
|
1546 | { |
|
|
1547 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1548 | w->rpid = pid; |
|
|
1549 | w->rstatus = status; |
|
|
1550 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1551 | } |
|
|
1552 | } |
|
|
1553 | } |
633 | |
1554 | |
634 | #ifndef WCONTINUED |
1555 | #ifndef WCONTINUED |
635 | # define WCONTINUED 0 |
1556 | # define WCONTINUED 0 |
636 | #endif |
1557 | #endif |
637 | |
1558 | |
|
|
1559 | /* called on sigchld etc., calls waitpid */ |
638 | static void |
1560 | static void |
639 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
640 | { |
|
|
641 | struct ev_child *w; |
|
|
642 | |
|
|
643 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
644 | if (w->pid == pid || !w->pid) |
|
|
645 | { |
|
|
646 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
647 | w->rpid = pid; |
|
|
648 | w->rstatus = status; |
|
|
649 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | static void |
|
|
654 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1561 | childcb (EV_P_ ev_signal *sw, int revents) |
655 | { |
1562 | { |
656 | int pid, status; |
1563 | int pid, status; |
657 | |
1564 | |
|
|
1565 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
658 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1566 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
659 | { |
1567 | if (!WCONTINUED |
|
|
1568 | || errno != EINVAL |
|
|
1569 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1570 | return; |
|
|
1571 | |
660 | /* make sure we are called again until all childs have been reaped */ |
1572 | /* make sure we are called again until all children have been reaped */ |
|
|
1573 | /* we need to do it this way so that the callback gets called before we continue */ |
661 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1574 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
662 | |
1575 | |
663 | child_reap (EV_A_ sw, pid, pid, status); |
1576 | child_reap (EV_A_ pid, pid, status); |
|
|
1577 | if ((EV_PID_HASHSIZE) > 1) |
664 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1578 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
665 | } |
|
|
666 | } |
1579 | } |
667 | |
1580 | |
668 | #endif |
1581 | #endif |
669 | |
1582 | |
670 | /*****************************************************************************/ |
1583 | /*****************************************************************************/ |
671 | |
1584 | |
|
|
1585 | #if EV_USE_IOCP |
|
|
1586 | # include "ev_iocp.c" |
|
|
1587 | #endif |
|
|
1588 | #if EV_USE_PORT |
|
|
1589 | # include "ev_port.c" |
|
|
1590 | #endif |
672 | #if EV_USE_KQUEUE |
1591 | #if EV_USE_KQUEUE |
673 | # include "ev_kqueue.c" |
1592 | # include "ev_kqueue.c" |
674 | #endif |
1593 | #endif |
675 | #if EV_USE_EPOLL |
1594 | #if EV_USE_EPOLL |
676 | # include "ev_epoll.c" |
1595 | # include "ev_epoll.c" |
… | |
… | |
693 | { |
1612 | { |
694 | return EV_VERSION_MINOR; |
1613 | return EV_VERSION_MINOR; |
695 | } |
1614 | } |
696 | |
1615 | |
697 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1616 | /* return true if we are running with elevated privileges and should ignore env variables */ |
698 | static int |
1617 | int inline_size |
699 | enable_secure (void) |
1618 | enable_secure (void) |
700 | { |
1619 | { |
701 | #ifdef WIN32 |
1620 | #ifdef _WIN32 |
702 | return 0; |
1621 | return 0; |
703 | #else |
1622 | #else |
704 | return getuid () != geteuid () |
1623 | return getuid () != geteuid () |
705 | || getgid () != getegid (); |
1624 | || getgid () != getegid (); |
706 | #endif |
1625 | #endif |
707 | } |
1626 | } |
708 | |
1627 | |
709 | int |
1628 | unsigned int |
|
|
1629 | ev_supported_backends (void) |
|
|
1630 | { |
|
|
1631 | unsigned int flags = 0; |
|
|
1632 | |
|
|
1633 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1634 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1635 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1636 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1637 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1638 | |
|
|
1639 | return flags; |
|
|
1640 | } |
|
|
1641 | |
|
|
1642 | unsigned int |
|
|
1643 | ev_recommended_backends (void) |
|
|
1644 | { |
|
|
1645 | unsigned int flags = ev_supported_backends (); |
|
|
1646 | |
|
|
1647 | #ifndef __NetBSD__ |
|
|
1648 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1649 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1650 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1651 | #endif |
|
|
1652 | #ifdef __APPLE__ |
|
|
1653 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1654 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1655 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1656 | #endif |
|
|
1657 | #ifdef __FreeBSD__ |
|
|
1658 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
1659 | #endif |
|
|
1660 | |
|
|
1661 | return flags; |
|
|
1662 | } |
|
|
1663 | |
|
|
1664 | unsigned int |
|
|
1665 | ev_embeddable_backends (void) |
|
|
1666 | { |
|
|
1667 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1668 | |
|
|
1669 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1670 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
1671 | flags &= ~EVBACKEND_EPOLL; |
|
|
1672 | |
|
|
1673 | return flags; |
|
|
1674 | } |
|
|
1675 | |
|
|
1676 | unsigned int |
|
|
1677 | ev_backend (EV_P) |
|
|
1678 | { |
|
|
1679 | return backend; |
|
|
1680 | } |
|
|
1681 | |
|
|
1682 | #if EV_FEATURE_API |
|
|
1683 | unsigned int |
|
|
1684 | ev_iteration (EV_P) |
|
|
1685 | { |
|
|
1686 | return loop_count; |
|
|
1687 | } |
|
|
1688 | |
|
|
1689 | unsigned int |
710 | ev_method (EV_P) |
1690 | ev_depth (EV_P) |
711 | { |
1691 | { |
712 | return method; |
1692 | return loop_depth; |
713 | } |
1693 | } |
714 | |
1694 | |
715 | static void |
1695 | void |
716 | loop_init (EV_P_ int methods) |
1696 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
717 | { |
1697 | { |
718 | if (!method) |
1698 | io_blocktime = interval; |
|
|
1699 | } |
|
|
1700 | |
|
|
1701 | void |
|
|
1702 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1703 | { |
|
|
1704 | timeout_blocktime = interval; |
|
|
1705 | } |
|
|
1706 | |
|
|
1707 | void |
|
|
1708 | ev_set_userdata (EV_P_ void *data) |
|
|
1709 | { |
|
|
1710 | userdata = data; |
|
|
1711 | } |
|
|
1712 | |
|
|
1713 | void * |
|
|
1714 | ev_userdata (EV_P) |
|
|
1715 | { |
|
|
1716 | return userdata; |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1720 | { |
|
|
1721 | invoke_cb = invoke_pending_cb; |
|
|
1722 | } |
|
|
1723 | |
|
|
1724 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1725 | { |
|
|
1726 | release_cb = release; |
|
|
1727 | acquire_cb = acquire; |
|
|
1728 | } |
|
|
1729 | #endif |
|
|
1730 | |
|
|
1731 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1732 | static void noinline |
|
|
1733 | loop_init (EV_P_ unsigned int flags) |
|
|
1734 | { |
|
|
1735 | if (!backend) |
719 | { |
1736 | { |
|
|
1737 | origflags = flags; |
|
|
1738 | |
|
|
1739 | #if EV_USE_REALTIME |
|
|
1740 | if (!have_realtime) |
|
|
1741 | { |
|
|
1742 | struct timespec ts; |
|
|
1743 | |
|
|
1744 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1745 | have_realtime = 1; |
|
|
1746 | } |
|
|
1747 | #endif |
|
|
1748 | |
720 | #if EV_USE_MONOTONIC |
1749 | #if EV_USE_MONOTONIC |
|
|
1750 | if (!have_monotonic) |
|
|
1751 | { |
|
|
1752 | struct timespec ts; |
|
|
1753 | |
|
|
1754 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1755 | have_monotonic = 1; |
|
|
1756 | } |
|
|
1757 | #endif |
|
|
1758 | |
|
|
1759 | /* pid check not overridable via env */ |
|
|
1760 | #ifndef _WIN32 |
|
|
1761 | if (flags & EVFLAG_FORKCHECK) |
|
|
1762 | curpid = getpid (); |
|
|
1763 | #endif |
|
|
1764 | |
|
|
1765 | if (!(flags & EVFLAG_NOENV) |
|
|
1766 | && !enable_secure () |
|
|
1767 | && getenv ("LIBEV_FLAGS")) |
|
|
1768 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1769 | |
|
|
1770 | ev_rt_now = ev_time (); |
|
|
1771 | mn_now = get_clock (); |
|
|
1772 | now_floor = mn_now; |
|
|
1773 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1774 | #if EV_FEATURE_API |
|
|
1775 | invoke_cb = ev_invoke_pending; |
|
|
1776 | #endif |
|
|
1777 | |
|
|
1778 | io_blocktime = 0.; |
|
|
1779 | timeout_blocktime = 0.; |
|
|
1780 | backend = 0; |
|
|
1781 | backend_fd = -1; |
|
|
1782 | sig_pending = 0; |
|
|
1783 | #if EV_ASYNC_ENABLE |
|
|
1784 | async_pending = 0; |
|
|
1785 | #endif |
|
|
1786 | #if EV_USE_INOTIFY |
|
|
1787 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1788 | #endif |
|
|
1789 | #if EV_USE_SIGNALFD |
|
|
1790 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
1791 | #endif |
|
|
1792 | |
|
|
1793 | if (!(flags & EVBACKEND_MASK)) |
|
|
1794 | flags |= ev_recommended_backends (); |
|
|
1795 | |
|
|
1796 | #if EV_USE_IOCP |
|
|
1797 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1798 | #endif |
|
|
1799 | #if EV_USE_PORT |
|
|
1800 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1801 | #endif |
|
|
1802 | #if EV_USE_KQUEUE |
|
|
1803 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1804 | #endif |
|
|
1805 | #if EV_USE_EPOLL |
|
|
1806 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1807 | #endif |
|
|
1808 | #if EV_USE_POLL |
|
|
1809 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1810 | #endif |
|
|
1811 | #if EV_USE_SELECT |
|
|
1812 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1813 | #endif |
|
|
1814 | |
|
|
1815 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1816 | |
|
|
1817 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1818 | ev_init (&pipe_w, pipecb); |
|
|
1819 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1820 | #endif |
|
|
1821 | } |
|
|
1822 | } |
|
|
1823 | |
|
|
1824 | /* free up a loop structure */ |
|
|
1825 | void |
|
|
1826 | ev_loop_destroy (EV_P) |
|
|
1827 | { |
|
|
1828 | int i; |
|
|
1829 | |
|
|
1830 | #if EV_MULTIPLICITY |
|
|
1831 | /* mimic free (0) */ |
|
|
1832 | if (!EV_A) |
|
|
1833 | return; |
|
|
1834 | #endif |
|
|
1835 | |
|
|
1836 | #if EV_CLEANUP_ENABLE |
|
|
1837 | /* queue cleanup watchers (and execute them) */ |
|
|
1838 | if (expect_false (cleanupcnt)) |
|
|
1839 | { |
|
|
1840 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1841 | EV_INVOKE_PENDING; |
|
|
1842 | } |
|
|
1843 | #endif |
|
|
1844 | |
|
|
1845 | #if EV_CHILD_ENABLE |
|
|
1846 | if (ev_is_active (&childev)) |
|
|
1847 | { |
|
|
1848 | ev_ref (EV_A); /* child watcher */ |
|
|
1849 | ev_signal_stop (EV_A_ &childev); |
|
|
1850 | } |
|
|
1851 | #endif |
|
|
1852 | |
|
|
1853 | if (ev_is_active (&pipe_w)) |
|
|
1854 | { |
|
|
1855 | /*ev_ref (EV_A);*/ |
|
|
1856 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1857 | |
|
|
1858 | #if EV_USE_EVENTFD |
|
|
1859 | if (evfd >= 0) |
|
|
1860 | close (evfd); |
|
|
1861 | #endif |
|
|
1862 | |
|
|
1863 | if (evpipe [0] >= 0) |
|
|
1864 | { |
|
|
1865 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1866 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1867 | } |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | #if EV_USE_SIGNALFD |
|
|
1871 | if (ev_is_active (&sigfd_w)) |
|
|
1872 | close (sigfd); |
|
|
1873 | #endif |
|
|
1874 | |
|
|
1875 | #if EV_USE_INOTIFY |
|
|
1876 | if (fs_fd >= 0) |
|
|
1877 | close (fs_fd); |
|
|
1878 | #endif |
|
|
1879 | |
|
|
1880 | if (backend_fd >= 0) |
|
|
1881 | close (backend_fd); |
|
|
1882 | |
|
|
1883 | #if EV_USE_IOCP |
|
|
1884 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1885 | #endif |
|
|
1886 | #if EV_USE_PORT |
|
|
1887 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1888 | #endif |
|
|
1889 | #if EV_USE_KQUEUE |
|
|
1890 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1891 | #endif |
|
|
1892 | #if EV_USE_EPOLL |
|
|
1893 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1894 | #endif |
|
|
1895 | #if EV_USE_POLL |
|
|
1896 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1897 | #endif |
|
|
1898 | #if EV_USE_SELECT |
|
|
1899 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1900 | #endif |
|
|
1901 | |
|
|
1902 | for (i = NUMPRI; i--; ) |
|
|
1903 | { |
|
|
1904 | array_free (pending, [i]); |
|
|
1905 | #if EV_IDLE_ENABLE |
|
|
1906 | array_free (idle, [i]); |
|
|
1907 | #endif |
|
|
1908 | } |
|
|
1909 | |
|
|
1910 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
1911 | |
|
|
1912 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1913 | array_free (rfeed, EMPTY); |
|
|
1914 | array_free (fdchange, EMPTY); |
|
|
1915 | array_free (timer, EMPTY); |
|
|
1916 | #if EV_PERIODIC_ENABLE |
|
|
1917 | array_free (periodic, EMPTY); |
|
|
1918 | #endif |
|
|
1919 | #if EV_FORK_ENABLE |
|
|
1920 | array_free (fork, EMPTY); |
|
|
1921 | #endif |
|
|
1922 | #if EV_CLEANUP_ENABLE |
|
|
1923 | array_free (cleanup, EMPTY); |
|
|
1924 | #endif |
|
|
1925 | array_free (prepare, EMPTY); |
|
|
1926 | array_free (check, EMPTY); |
|
|
1927 | #if EV_ASYNC_ENABLE |
|
|
1928 | array_free (async, EMPTY); |
|
|
1929 | #endif |
|
|
1930 | |
|
|
1931 | backend = 0; |
|
|
1932 | |
|
|
1933 | #if EV_MULTIPLICITY |
|
|
1934 | if (ev_is_default_loop (EV_A)) |
|
|
1935 | #endif |
|
|
1936 | ev_default_loop_ptr = 0; |
|
|
1937 | #if EV_MULTIPLICITY |
|
|
1938 | else |
|
|
1939 | ev_free (EV_A); |
|
|
1940 | #endif |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | #if EV_USE_INOTIFY |
|
|
1944 | inline_size void infy_fork (EV_P); |
|
|
1945 | #endif |
|
|
1946 | |
|
|
1947 | inline_size void |
|
|
1948 | loop_fork (EV_P) |
|
|
1949 | { |
|
|
1950 | #if EV_USE_PORT |
|
|
1951 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1952 | #endif |
|
|
1953 | #if EV_USE_KQUEUE |
|
|
1954 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1955 | #endif |
|
|
1956 | #if EV_USE_EPOLL |
|
|
1957 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1958 | #endif |
|
|
1959 | #if EV_USE_INOTIFY |
|
|
1960 | infy_fork (EV_A); |
|
|
1961 | #endif |
|
|
1962 | |
|
|
1963 | if (ev_is_active (&pipe_w)) |
|
|
1964 | { |
|
|
1965 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1966 | /* while we modify the fd vars */ |
|
|
1967 | sig_pending = 1; |
|
|
1968 | #if EV_ASYNC_ENABLE |
|
|
1969 | async_pending = 1; |
|
|
1970 | #endif |
|
|
1971 | |
|
|
1972 | ev_ref (EV_A); |
|
|
1973 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1974 | |
|
|
1975 | #if EV_USE_EVENTFD |
|
|
1976 | if (evfd >= 0) |
|
|
1977 | close (evfd); |
|
|
1978 | #endif |
|
|
1979 | |
|
|
1980 | if (evpipe [0] >= 0) |
|
|
1981 | { |
|
|
1982 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1983 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1984 | } |
|
|
1985 | |
|
|
1986 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1987 | evpipe_init (EV_A); |
|
|
1988 | /* now iterate over everything, in case we missed something */ |
|
|
1989 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1990 | #endif |
|
|
1991 | } |
|
|
1992 | |
|
|
1993 | postfork = 0; |
|
|
1994 | } |
|
|
1995 | |
|
|
1996 | #if EV_MULTIPLICITY |
|
|
1997 | |
|
|
1998 | struct ev_loop * |
|
|
1999 | ev_loop_new (unsigned int flags) |
|
|
2000 | { |
|
|
2001 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
2002 | |
|
|
2003 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
2004 | loop_init (EV_A_ flags); |
|
|
2005 | |
|
|
2006 | if (ev_backend (EV_A)) |
|
|
2007 | return EV_A; |
|
|
2008 | |
|
|
2009 | ev_free (EV_A); |
|
|
2010 | return 0; |
|
|
2011 | } |
|
|
2012 | |
|
|
2013 | #endif /* multiplicity */ |
|
|
2014 | |
|
|
2015 | #if EV_VERIFY |
|
|
2016 | static void noinline |
|
|
2017 | verify_watcher (EV_P_ W w) |
|
|
2018 | { |
|
|
2019 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
2020 | |
|
|
2021 | if (w->pending) |
|
|
2022 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2023 | } |
|
|
2024 | |
|
|
2025 | static void noinline |
|
|
2026 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2027 | { |
|
|
2028 | int i; |
|
|
2029 | |
|
|
2030 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2031 | { |
|
|
2032 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2033 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2034 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2035 | |
|
|
2036 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2037 | } |
|
|
2038 | } |
|
|
2039 | |
|
|
2040 | static void noinline |
|
|
2041 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2042 | { |
|
|
2043 | while (cnt--) |
|
|
2044 | { |
|
|
2045 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2046 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2047 | } |
|
|
2048 | } |
|
|
2049 | #endif |
|
|
2050 | |
|
|
2051 | #if EV_FEATURE_API |
|
|
2052 | void |
|
|
2053 | ev_verify (EV_P) |
|
|
2054 | { |
|
|
2055 | #if EV_VERIFY |
|
|
2056 | int i; |
|
|
2057 | WL w; |
|
|
2058 | |
|
|
2059 | assert (activecnt >= -1); |
|
|
2060 | |
|
|
2061 | assert (fdchangemax >= fdchangecnt); |
|
|
2062 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2063 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2064 | |
|
|
2065 | assert (anfdmax >= 0); |
|
|
2066 | for (i = 0; i < anfdmax; ++i) |
|
|
2067 | for (w = anfds [i].head; w; w = w->next) |
721 | { |
2068 | { |
722 | struct timespec ts; |
2069 | verify_watcher (EV_A_ (W)w); |
723 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
2070 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
724 | have_monotonic = 1; |
2071 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
725 | } |
2072 | } |
726 | #endif |
|
|
727 | |
2073 | |
728 | rt_now = ev_time (); |
2074 | assert (timermax >= timercnt); |
729 | mn_now = get_clock (); |
2075 | verify_heap (EV_A_ timers, timercnt); |
730 | now_floor = mn_now; |
|
|
731 | rtmn_diff = rt_now - mn_now; |
|
|
732 | |
2076 | |
733 | if (methods == EVMETHOD_AUTO) |
2077 | #if EV_PERIODIC_ENABLE |
734 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
2078 | assert (periodicmax >= periodiccnt); |
735 | methods = atoi (getenv ("LIBEV_METHODS")); |
2079 | verify_heap (EV_A_ periodics, periodiccnt); |
736 | else |
|
|
737 | methods = EVMETHOD_ANY; |
|
|
738 | |
|
|
739 | method = 0; |
|
|
740 | #if EV_USE_WIN32 |
|
|
741 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
742 | #endif |
|
|
743 | #if EV_USE_KQUEUE |
|
|
744 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
745 | #endif |
|
|
746 | #if EV_USE_EPOLL |
|
|
747 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
748 | #endif |
|
|
749 | #if EV_USE_POLL |
|
|
750 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
751 | #endif |
|
|
752 | #if EV_USE_SELECT |
|
|
753 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | ev_watcher_init (&sigev, sigcb); |
|
|
757 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
758 | } |
|
|
759 | } |
|
|
760 | |
|
|
761 | void |
|
|
762 | loop_destroy (EV_P) |
|
|
763 | { |
|
|
764 | int i; |
|
|
765 | |
|
|
766 | #if EV_USE_WIN32 |
|
|
767 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
768 | #endif |
|
|
769 | #if EV_USE_KQUEUE |
|
|
770 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
771 | #endif |
|
|
772 | #if EV_USE_EPOLL |
|
|
773 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
774 | #endif |
|
|
775 | #if EV_USE_POLL |
|
|
776 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
777 | #endif |
|
|
778 | #if EV_USE_SELECT |
|
|
779 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
780 | #endif |
2080 | #endif |
781 | |
2081 | |
782 | for (i = NUMPRI; i--; ) |
2082 | for (i = NUMPRI; i--; ) |
783 | array_free (pending, [i]); |
2083 | { |
|
|
2084 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2085 | #if EV_IDLE_ENABLE |
|
|
2086 | assert (idleall >= 0); |
|
|
2087 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2088 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2089 | #endif |
|
|
2090 | } |
784 | |
2091 | |
785 | /* have to use the microsoft-never-gets-it-right macro */ |
2092 | #if EV_FORK_ENABLE |
786 | array_free_microshit (fdchange); |
2093 | assert (forkmax >= forkcnt); |
787 | array_free_microshit (timer); |
2094 | array_verify (EV_A_ (W *)forks, forkcnt); |
788 | array_free_microshit (periodic); |
2095 | #endif |
789 | array_free_microshit (idle); |
|
|
790 | array_free_microshit (prepare); |
|
|
791 | array_free_microshit (check); |
|
|
792 | |
2096 | |
793 | method = 0; |
2097 | #if EV_CLEANUP_ENABLE |
794 | } |
2098 | assert (cleanupmax >= cleanupcnt); |
|
|
2099 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2100 | #endif |
795 | |
2101 | |
796 | static void |
2102 | #if EV_ASYNC_ENABLE |
797 | loop_fork (EV_P) |
2103 | assert (asyncmax >= asynccnt); |
798 | { |
2104 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
799 | #if EV_USE_EPOLL |
2105 | #endif |
800 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
2106 | |
|
|
2107 | #if EV_PREPARE_ENABLE |
|
|
2108 | assert (preparemax >= preparecnt); |
|
|
2109 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2110 | #endif |
|
|
2111 | |
|
|
2112 | #if EV_CHECK_ENABLE |
|
|
2113 | assert (checkmax >= checkcnt); |
|
|
2114 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2115 | #endif |
|
|
2116 | |
|
|
2117 | # if 0 |
|
|
2118 | #if EV_CHILD_ENABLE |
|
|
2119 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2120 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2121 | #endif |
801 | #endif |
2122 | # endif |
802 | #if EV_USE_KQUEUE |
|
|
803 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
804 | #endif |
2123 | #endif |
805 | |
|
|
806 | if (ev_is_active (&sigev)) |
|
|
807 | { |
|
|
808 | /* default loop */ |
|
|
809 | |
|
|
810 | ev_ref (EV_A); |
|
|
811 | ev_io_stop (EV_A_ &sigev); |
|
|
812 | close (sigpipe [0]); |
|
|
813 | close (sigpipe [1]); |
|
|
814 | |
|
|
815 | while (pipe (sigpipe)) |
|
|
816 | syserr ("(libev) error creating pipe"); |
|
|
817 | |
|
|
818 | siginit (EV_A); |
|
|
819 | } |
|
|
820 | |
|
|
821 | postfork = 0; |
|
|
822 | } |
2124 | } |
823 | |
|
|
824 | #if EV_MULTIPLICITY |
|
|
825 | struct ev_loop * |
|
|
826 | ev_loop_new (int methods) |
|
|
827 | { |
|
|
828 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
829 | |
|
|
830 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
831 | |
|
|
832 | loop_init (EV_A_ methods); |
|
|
833 | |
|
|
834 | if (ev_method (EV_A)) |
|
|
835 | return loop; |
|
|
836 | |
|
|
837 | return 0; |
|
|
838 | } |
|
|
839 | |
|
|
840 | void |
|
|
841 | ev_loop_destroy (EV_P) |
|
|
842 | { |
|
|
843 | loop_destroy (EV_A); |
|
|
844 | ev_free (loop); |
|
|
845 | } |
|
|
846 | |
|
|
847 | void |
|
|
848 | ev_loop_fork (EV_P) |
|
|
849 | { |
|
|
850 | postfork = 1; |
|
|
851 | } |
|
|
852 | |
|
|
853 | #endif |
2125 | #endif |
854 | |
2126 | |
855 | #if EV_MULTIPLICITY |
2127 | #if EV_MULTIPLICITY |
856 | struct ev_loop * |
2128 | struct ev_loop * |
857 | #else |
2129 | #else |
858 | int |
2130 | int |
859 | #endif |
2131 | #endif |
860 | ev_default_loop (int methods) |
2132 | ev_default_loop (unsigned int flags) |
861 | { |
2133 | { |
862 | if (sigpipe [0] == sigpipe [1]) |
|
|
863 | if (pipe (sigpipe)) |
|
|
864 | return 0; |
|
|
865 | |
|
|
866 | if (!default_loop) |
2134 | if (!ev_default_loop_ptr) |
867 | { |
2135 | { |
868 | #if EV_MULTIPLICITY |
2136 | #if EV_MULTIPLICITY |
869 | struct ev_loop *loop = default_loop = &default_loop_struct; |
2137 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
870 | #else |
2138 | #else |
871 | default_loop = 1; |
2139 | ev_default_loop_ptr = 1; |
872 | #endif |
2140 | #endif |
873 | |
2141 | |
874 | loop_init (EV_A_ methods); |
2142 | loop_init (EV_A_ flags); |
875 | |
2143 | |
876 | if (ev_method (EV_A)) |
2144 | if (ev_backend (EV_A)) |
877 | { |
2145 | { |
878 | siginit (EV_A); |
2146 | #if EV_CHILD_ENABLE |
879 | |
|
|
880 | #ifndef WIN32 |
|
|
881 | ev_signal_init (&childev, childcb, SIGCHLD); |
2147 | ev_signal_init (&childev, childcb, SIGCHLD); |
882 | ev_set_priority (&childev, EV_MAXPRI); |
2148 | ev_set_priority (&childev, EV_MAXPRI); |
883 | ev_signal_start (EV_A_ &childev); |
2149 | ev_signal_start (EV_A_ &childev); |
884 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
2150 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
885 | #endif |
2151 | #endif |
886 | } |
2152 | } |
887 | else |
2153 | else |
888 | default_loop = 0; |
2154 | ev_default_loop_ptr = 0; |
889 | } |
2155 | } |
890 | |
2156 | |
891 | return default_loop; |
2157 | return ev_default_loop_ptr; |
892 | } |
2158 | } |
893 | |
2159 | |
894 | void |
2160 | void |
895 | ev_default_destroy (void) |
2161 | ev_loop_fork (EV_P) |
896 | { |
2162 | { |
897 | #if EV_MULTIPLICITY |
2163 | postfork = 1; /* must be in line with ev_default_fork */ |
898 | struct ev_loop *loop = default_loop; |
|
|
899 | #endif |
|
|
900 | |
|
|
901 | #ifndef WIN32 |
|
|
902 | ev_ref (EV_A); /* child watcher */ |
|
|
903 | ev_signal_stop (EV_A_ &childev); |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | ev_ref (EV_A); /* signal watcher */ |
|
|
907 | ev_io_stop (EV_A_ &sigev); |
|
|
908 | |
|
|
909 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
910 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
911 | |
|
|
912 | loop_destroy (EV_A); |
|
|
913 | } |
|
|
914 | |
|
|
915 | void |
|
|
916 | ev_default_fork (void) |
|
|
917 | { |
|
|
918 | #if EV_MULTIPLICITY |
|
|
919 | struct ev_loop *loop = default_loop; |
|
|
920 | #endif |
|
|
921 | |
|
|
922 | if (method) |
|
|
923 | postfork = 1; |
|
|
924 | } |
2164 | } |
925 | |
2165 | |
926 | /*****************************************************************************/ |
2166 | /*****************************************************************************/ |
927 | |
2167 | |
928 | static int |
2168 | void |
929 | any_pending (EV_P) |
2169 | ev_invoke (EV_P_ void *w, int revents) |
|
|
2170 | { |
|
|
2171 | EV_CB_INVOKE ((W)w, revents); |
|
|
2172 | } |
|
|
2173 | |
|
|
2174 | unsigned int |
|
|
2175 | ev_pending_count (EV_P) |
930 | { |
2176 | { |
931 | int pri; |
2177 | int pri; |
|
|
2178 | unsigned int count = 0; |
932 | |
2179 | |
933 | for (pri = NUMPRI; pri--; ) |
2180 | for (pri = NUMPRI; pri--; ) |
934 | if (pendingcnt [pri]) |
2181 | count += pendingcnt [pri]; |
935 | return 1; |
|
|
936 | |
2182 | |
937 | return 0; |
2183 | return count; |
938 | } |
2184 | } |
939 | |
2185 | |
940 | static void |
2186 | void noinline |
941 | call_pending (EV_P) |
2187 | ev_invoke_pending (EV_P) |
942 | { |
2188 | { |
943 | int pri; |
2189 | int pri; |
944 | |
2190 | |
945 | for (pri = NUMPRI; pri--; ) |
2191 | for (pri = NUMPRI; pri--; ) |
946 | while (pendingcnt [pri]) |
2192 | while (pendingcnt [pri]) |
947 | { |
2193 | { |
948 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2194 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
949 | |
2195 | |
950 | if (p->w) |
|
|
951 | { |
|
|
952 | p->w->pending = 0; |
2196 | p->w->pending = 0; |
953 | p->w->cb (EV_A_ p->w, p->events); |
2197 | EV_CB_INVOKE (p->w, p->events); |
954 | } |
2198 | EV_FREQUENT_CHECK; |
955 | } |
2199 | } |
956 | } |
2200 | } |
957 | |
2201 | |
958 | static void |
2202 | #if EV_IDLE_ENABLE |
|
|
2203 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2204 | /* only when higher priorities are idle" logic */ |
|
|
2205 | inline_size void |
|
|
2206 | idle_reify (EV_P) |
|
|
2207 | { |
|
|
2208 | if (expect_false (idleall)) |
|
|
2209 | { |
|
|
2210 | int pri; |
|
|
2211 | |
|
|
2212 | for (pri = NUMPRI; pri--; ) |
|
|
2213 | { |
|
|
2214 | if (pendingcnt [pri]) |
|
|
2215 | break; |
|
|
2216 | |
|
|
2217 | if (idlecnt [pri]) |
|
|
2218 | { |
|
|
2219 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2220 | break; |
|
|
2221 | } |
|
|
2222 | } |
|
|
2223 | } |
|
|
2224 | } |
|
|
2225 | #endif |
|
|
2226 | |
|
|
2227 | /* make timers pending */ |
|
|
2228 | inline_size void |
959 | timers_reify (EV_P) |
2229 | timers_reify (EV_P) |
960 | { |
2230 | { |
|
|
2231 | EV_FREQUENT_CHECK; |
|
|
2232 | |
961 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
2233 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
962 | { |
2234 | { |
963 | struct ev_timer *w = timers [0]; |
2235 | do |
964 | |
|
|
965 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
966 | |
|
|
967 | /* first reschedule or stop timer */ |
|
|
968 | if (w->repeat) |
|
|
969 | { |
2236 | { |
|
|
2237 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2238 | |
|
|
2239 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2240 | |
|
|
2241 | /* first reschedule or stop timer */ |
|
|
2242 | if (w->repeat) |
|
|
2243 | { |
|
|
2244 | ev_at (w) += w->repeat; |
|
|
2245 | if (ev_at (w) < mn_now) |
|
|
2246 | ev_at (w) = mn_now; |
|
|
2247 | |
970 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2248 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
971 | ((WT)w)->at = mn_now + w->repeat; |
2249 | |
|
|
2250 | ANHE_at_cache (timers [HEAP0]); |
972 | downheap ((WT *)timers, timercnt, 0); |
2251 | downheap (timers, timercnt, HEAP0); |
|
|
2252 | } |
|
|
2253 | else |
|
|
2254 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2255 | |
|
|
2256 | EV_FREQUENT_CHECK; |
|
|
2257 | feed_reverse (EV_A_ (W)w); |
973 | } |
2258 | } |
974 | else |
2259 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
975 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
976 | |
2260 | |
977 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
2261 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
2262 | } |
|
|
2263 | } |
|
|
2264 | |
|
|
2265 | #if EV_PERIODIC_ENABLE |
|
|
2266 | |
|
|
2267 | static void noinline |
|
|
2268 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2269 | { |
|
|
2270 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2271 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2272 | |
|
|
2273 | /* the above almost always errs on the low side */ |
|
|
2274 | while (at <= ev_rt_now) |
978 | } |
2275 | { |
979 | } |
2276 | ev_tstamp nat = at + w->interval; |
980 | |
2277 | |
981 | static void |
2278 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2279 | if (expect_false (nat == at)) |
|
|
2280 | { |
|
|
2281 | at = ev_rt_now; |
|
|
2282 | break; |
|
|
2283 | } |
|
|
2284 | |
|
|
2285 | at = nat; |
|
|
2286 | } |
|
|
2287 | |
|
|
2288 | ev_at (w) = at; |
|
|
2289 | } |
|
|
2290 | |
|
|
2291 | /* make periodics pending */ |
|
|
2292 | inline_size void |
982 | periodics_reify (EV_P) |
2293 | periodics_reify (EV_P) |
983 | { |
2294 | { |
|
|
2295 | EV_FREQUENT_CHECK; |
|
|
2296 | |
984 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
2297 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
985 | { |
2298 | { |
986 | struct ev_periodic *w = periodics [0]; |
2299 | int feed_count = 0; |
987 | |
2300 | |
|
|
2301 | do |
|
|
2302 | { |
|
|
2303 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2304 | |
988 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
2305 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
989 | |
2306 | |
990 | /* first reschedule or stop timer */ |
2307 | /* first reschedule or stop timer */ |
|
|
2308 | if (w->reschedule_cb) |
|
|
2309 | { |
|
|
2310 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2311 | |
|
|
2312 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2313 | |
|
|
2314 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2315 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2316 | } |
|
|
2317 | else if (w->interval) |
|
|
2318 | { |
|
|
2319 | periodic_recalc (EV_A_ w); |
|
|
2320 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2321 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2322 | } |
|
|
2323 | else |
|
|
2324 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2325 | |
|
|
2326 | EV_FREQUENT_CHECK; |
|
|
2327 | feed_reverse (EV_A_ (W)w); |
|
|
2328 | } |
|
|
2329 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2330 | |
|
|
2331 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2332 | } |
|
|
2333 | } |
|
|
2334 | |
|
|
2335 | /* simply recalculate all periodics */ |
|
|
2336 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
2337 | static void noinline |
|
|
2338 | periodics_reschedule (EV_P) |
|
|
2339 | { |
|
|
2340 | int i; |
|
|
2341 | |
|
|
2342 | /* adjust periodics after time jump */ |
|
|
2343 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2344 | { |
|
|
2345 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2346 | |
991 | if (w->reschedule_cb) |
2347 | if (w->reschedule_cb) |
992 | { |
|
|
993 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); |
2348 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
994 | |
|
|
995 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); |
|
|
996 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
997 | } |
|
|
998 | else if (w->interval) |
2349 | else if (w->interval) |
999 | { |
2350 | periodic_recalc (EV_A_ w); |
1000 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1001 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
|
|
1002 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1003 | } |
|
|
1004 | else |
|
|
1005 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1006 | |
2351 | |
1007 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
2352 | ANHE_at_cache (periodics [i]); |
1008 | } |
2353 | } |
1009 | } |
|
|
1010 | |
2354 | |
1011 | static void |
2355 | reheap (periodics, periodiccnt); |
1012 | periodics_reschedule (EV_P) |
2356 | } |
|
|
2357 | #endif |
|
|
2358 | |
|
|
2359 | /* adjust all timers by a given offset */ |
|
|
2360 | static void noinline |
|
|
2361 | timers_reschedule (EV_P_ ev_tstamp adjust) |
1013 | { |
2362 | { |
1014 | int i; |
2363 | int i; |
1015 | |
2364 | |
1016 | /* adjust periodics after time jump */ |
|
|
1017 | for (i = 0; i < periodiccnt; ++i) |
2365 | for (i = 0; i < timercnt; ++i) |
1018 | { |
|
|
1019 | struct ev_periodic *w = periodics [i]; |
|
|
1020 | |
|
|
1021 | if (w->reschedule_cb) |
|
|
1022 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
|
|
1023 | else if (w->interval) |
|
|
1024 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1025 | } |
2366 | { |
1026 | |
2367 | ANHE *he = timers + i + HEAP0; |
1027 | /* now rebuild the heap */ |
2368 | ANHE_w (*he)->at += adjust; |
1028 | for (i = periodiccnt >> 1; i--; ) |
2369 | ANHE_at_cache (*he); |
1029 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1030 | } |
|
|
1031 | |
|
|
1032 | inline int |
|
|
1033 | time_update_monotonic (EV_P) |
|
|
1034 | { |
|
|
1035 | mn_now = get_clock (); |
|
|
1036 | |
|
|
1037 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1038 | { |
2370 | } |
1039 | rt_now = rtmn_diff + mn_now; |
|
|
1040 | return 0; |
|
|
1041 | } |
|
|
1042 | else |
|
|
1043 | { |
|
|
1044 | now_floor = mn_now; |
|
|
1045 | rt_now = ev_time (); |
|
|
1046 | return 1; |
|
|
1047 | } |
|
|
1048 | } |
2371 | } |
1049 | |
2372 | |
1050 | static void |
2373 | /* fetch new monotonic and realtime times from the kernel */ |
1051 | time_update (EV_P) |
2374 | /* also detect if there was a timejump, and act accordingly */ |
|
|
2375 | inline_speed void |
|
|
2376 | time_update (EV_P_ ev_tstamp max_block) |
1052 | { |
2377 | { |
1053 | int i; |
|
|
1054 | |
|
|
1055 | #if EV_USE_MONOTONIC |
2378 | #if EV_USE_MONOTONIC |
1056 | if (expect_true (have_monotonic)) |
2379 | if (expect_true (have_monotonic)) |
1057 | { |
2380 | { |
1058 | if (time_update_monotonic (EV_A)) |
2381 | int i; |
|
|
2382 | ev_tstamp odiff = rtmn_diff; |
|
|
2383 | |
|
|
2384 | mn_now = get_clock (); |
|
|
2385 | |
|
|
2386 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2387 | /* interpolate in the meantime */ |
|
|
2388 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1059 | { |
2389 | { |
1060 | ev_tstamp odiff = rtmn_diff; |
2390 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2391 | return; |
|
|
2392 | } |
1061 | |
2393 | |
|
|
2394 | now_floor = mn_now; |
|
|
2395 | ev_rt_now = ev_time (); |
|
|
2396 | |
1062 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
2397 | /* loop a few times, before making important decisions. |
|
|
2398 | * on the choice of "4": one iteration isn't enough, |
|
|
2399 | * in case we get preempted during the calls to |
|
|
2400 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2401 | * to succeed in that case, though. and looping a few more times |
|
|
2402 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2403 | * in the unlikely event of having been preempted here. |
|
|
2404 | */ |
|
|
2405 | for (i = 4; --i; ) |
1063 | { |
2406 | { |
|
|
2407 | ev_tstamp diff; |
1064 | rtmn_diff = rt_now - mn_now; |
2408 | rtmn_diff = ev_rt_now - mn_now; |
1065 | |
2409 | |
1066 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2410 | diff = odiff - rtmn_diff; |
|
|
2411 | |
|
|
2412 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
1067 | return; /* all is well */ |
2413 | return; /* all is well */ |
1068 | |
2414 | |
1069 | rt_now = ev_time (); |
2415 | ev_rt_now = ev_time (); |
1070 | mn_now = get_clock (); |
2416 | mn_now = get_clock (); |
1071 | now_floor = mn_now; |
2417 | now_floor = mn_now; |
1072 | } |
2418 | } |
1073 | |
2419 | |
|
|
2420 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2421 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2422 | # if EV_PERIODIC_ENABLE |
|
|
2423 | periodics_reschedule (EV_A); |
|
|
2424 | # endif |
|
|
2425 | } |
|
|
2426 | else |
|
|
2427 | #endif |
|
|
2428 | { |
|
|
2429 | ev_rt_now = ev_time (); |
|
|
2430 | |
|
|
2431 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2432 | { |
|
|
2433 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2434 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2435 | #if EV_PERIODIC_ENABLE |
1074 | periodics_reschedule (EV_A); |
2436 | periodics_reschedule (EV_A); |
1075 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2437 | #endif |
1076 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1077 | } |
2438 | } |
1078 | } |
|
|
1079 | else |
|
|
1080 | #endif |
|
|
1081 | { |
|
|
1082 | rt_now = ev_time (); |
|
|
1083 | |
2439 | |
1084 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1085 | { |
|
|
1086 | periodics_reschedule (EV_A); |
|
|
1087 | |
|
|
1088 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1089 | for (i = 0; i < timercnt; ++i) |
|
|
1090 | ((WT)timers [i])->at += rt_now - mn_now; |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | mn_now = rt_now; |
2440 | mn_now = ev_rt_now; |
1094 | } |
2441 | } |
1095 | } |
2442 | } |
1096 | |
2443 | |
1097 | void |
2444 | void |
1098 | ev_ref (EV_P) |
|
|
1099 | { |
|
|
1100 | ++activecnt; |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | void |
|
|
1104 | ev_unref (EV_P) |
|
|
1105 | { |
|
|
1106 | --activecnt; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | static int loop_done; |
|
|
1110 | |
|
|
1111 | void |
|
|
1112 | ev_loop (EV_P_ int flags) |
2445 | ev_run (EV_P_ int flags) |
1113 | { |
2446 | { |
1114 | double block; |
2447 | #if EV_FEATURE_API |
1115 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2448 | ++loop_depth; |
|
|
2449 | #endif |
|
|
2450 | |
|
|
2451 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
2452 | |
|
|
2453 | loop_done = EVBREAK_CANCEL; |
|
|
2454 | |
|
|
2455 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
1116 | |
2456 | |
1117 | do |
2457 | do |
1118 | { |
2458 | { |
|
|
2459 | #if EV_VERIFY >= 2 |
|
|
2460 | ev_verify (EV_A); |
|
|
2461 | #endif |
|
|
2462 | |
|
|
2463 | #ifndef _WIN32 |
|
|
2464 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2465 | if (expect_false (getpid () != curpid)) |
|
|
2466 | { |
|
|
2467 | curpid = getpid (); |
|
|
2468 | postfork = 1; |
|
|
2469 | } |
|
|
2470 | #endif |
|
|
2471 | |
|
|
2472 | #if EV_FORK_ENABLE |
|
|
2473 | /* we might have forked, so queue fork handlers */ |
|
|
2474 | if (expect_false (postfork)) |
|
|
2475 | if (forkcnt) |
|
|
2476 | { |
|
|
2477 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2478 | EV_INVOKE_PENDING; |
|
|
2479 | } |
|
|
2480 | #endif |
|
|
2481 | |
|
|
2482 | #if EV_PREPARE_ENABLE |
1119 | /* queue check watchers (and execute them) */ |
2483 | /* queue prepare watchers (and execute them) */ |
1120 | if (expect_false (preparecnt)) |
2484 | if (expect_false (preparecnt)) |
1121 | { |
2485 | { |
1122 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2486 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1123 | call_pending (EV_A); |
2487 | EV_INVOKE_PENDING; |
1124 | } |
2488 | } |
|
|
2489 | #endif |
|
|
2490 | |
|
|
2491 | if (expect_false (loop_done)) |
|
|
2492 | break; |
1125 | |
2493 | |
1126 | /* we might have forked, so reify kernel state if necessary */ |
2494 | /* we might have forked, so reify kernel state if necessary */ |
1127 | if (expect_false (postfork)) |
2495 | if (expect_false (postfork)) |
1128 | loop_fork (EV_A); |
2496 | loop_fork (EV_A); |
1129 | |
2497 | |
1130 | /* update fd-related kernel structures */ |
2498 | /* update fd-related kernel structures */ |
1131 | fd_reify (EV_A); |
2499 | fd_reify (EV_A); |
1132 | |
2500 | |
1133 | /* calculate blocking time */ |
2501 | /* calculate blocking time */ |
|
|
2502 | { |
|
|
2503 | ev_tstamp waittime = 0.; |
|
|
2504 | ev_tstamp sleeptime = 0.; |
1134 | |
2505 | |
1135 | /* we only need this for !monotonic clock or timers, but as we basically |
2506 | /* remember old timestamp for io_blocktime calculation */ |
1136 | always have timers, we just calculate it always */ |
2507 | ev_tstamp prev_mn_now = mn_now; |
1137 | #if EV_USE_MONOTONIC |
2508 | |
1138 | if (expect_true (have_monotonic)) |
2509 | /* update time to cancel out callback processing overhead */ |
1139 | time_update_monotonic (EV_A); |
2510 | time_update (EV_A_ 1e100); |
1140 | else |
2511 | |
1141 | #endif |
2512 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
1142 | { |
2513 | { |
1143 | rt_now = ev_time (); |
|
|
1144 | mn_now = rt_now; |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
1148 | block = 0.; |
|
|
1149 | else |
|
|
1150 | { |
|
|
1151 | block = MAX_BLOCKTIME; |
2514 | waittime = MAX_BLOCKTIME; |
1152 | |
2515 | |
1153 | if (timercnt) |
2516 | if (timercnt) |
1154 | { |
2517 | { |
1155 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
2518 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1156 | if (block > to) block = to; |
2519 | if (waittime > to) waittime = to; |
1157 | } |
2520 | } |
1158 | |
2521 | |
|
|
2522 | #if EV_PERIODIC_ENABLE |
1159 | if (periodiccnt) |
2523 | if (periodiccnt) |
1160 | { |
2524 | { |
1161 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
2525 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1162 | if (block > to) block = to; |
2526 | if (waittime > to) waittime = to; |
1163 | } |
2527 | } |
|
|
2528 | #endif |
1164 | |
2529 | |
1165 | if (block < 0.) block = 0.; |
2530 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2531 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2532 | waittime = timeout_blocktime; |
|
|
2533 | |
|
|
2534 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2535 | if (expect_false (io_blocktime)) |
|
|
2536 | { |
|
|
2537 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2538 | |
|
|
2539 | if (sleeptime > waittime - backend_fudge) |
|
|
2540 | sleeptime = waittime - backend_fudge; |
|
|
2541 | |
|
|
2542 | if (expect_true (sleeptime > 0.)) |
|
|
2543 | { |
|
|
2544 | ev_sleep (sleeptime); |
|
|
2545 | waittime -= sleeptime; |
|
|
2546 | } |
|
|
2547 | } |
1166 | } |
2548 | } |
1167 | |
2549 | |
1168 | method_poll (EV_A_ block); |
2550 | #if EV_FEATURE_API |
|
|
2551 | ++loop_count; |
|
|
2552 | #endif |
|
|
2553 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
2554 | backend_poll (EV_A_ waittime); |
|
|
2555 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
1169 | |
2556 | |
1170 | /* update rt_now, do magic */ |
2557 | /* update ev_rt_now, do magic */ |
1171 | time_update (EV_A); |
2558 | time_update (EV_A_ waittime + sleeptime); |
|
|
2559 | } |
1172 | |
2560 | |
1173 | /* queue pending timers and reschedule them */ |
2561 | /* queue pending timers and reschedule them */ |
1174 | timers_reify (EV_A); /* relative timers called last */ |
2562 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2563 | #if EV_PERIODIC_ENABLE |
1175 | periodics_reify (EV_A); /* absolute timers called first */ |
2564 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2565 | #endif |
1176 | |
2566 | |
|
|
2567 | #if EV_IDLE_ENABLE |
1177 | /* queue idle watchers unless io or timers are pending */ |
2568 | /* queue idle watchers unless other events are pending */ |
1178 | if (idlecnt && !any_pending (EV_A)) |
2569 | idle_reify (EV_A); |
1179 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
2570 | #endif |
1180 | |
2571 | |
|
|
2572 | #if EV_CHECK_ENABLE |
1181 | /* queue check watchers, to be executed first */ |
2573 | /* queue check watchers, to be executed first */ |
1182 | if (checkcnt) |
2574 | if (expect_false (checkcnt)) |
1183 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2575 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
2576 | #endif |
1184 | |
2577 | |
1185 | call_pending (EV_A); |
2578 | EV_INVOKE_PENDING; |
1186 | } |
2579 | } |
1187 | while (activecnt && !loop_done); |
2580 | while (expect_true ( |
|
|
2581 | activecnt |
|
|
2582 | && !loop_done |
|
|
2583 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
2584 | )); |
1188 | |
2585 | |
1189 | if (loop_done != 2) |
2586 | if (loop_done == EVBREAK_ONE) |
1190 | loop_done = 0; |
2587 | loop_done = EVBREAK_CANCEL; |
1191 | } |
|
|
1192 | |
2588 | |
|
|
2589 | #if EV_FEATURE_API |
|
|
2590 | --loop_depth; |
|
|
2591 | #endif |
|
|
2592 | } |
|
|
2593 | |
1193 | void |
2594 | void |
1194 | ev_unloop (EV_P_ int how) |
2595 | ev_break (EV_P_ int how) |
1195 | { |
2596 | { |
1196 | loop_done = how; |
2597 | loop_done = how; |
1197 | } |
2598 | } |
1198 | |
2599 | |
|
|
2600 | void |
|
|
2601 | ev_ref (EV_P) |
|
|
2602 | { |
|
|
2603 | ++activecnt; |
|
|
2604 | } |
|
|
2605 | |
|
|
2606 | void |
|
|
2607 | ev_unref (EV_P) |
|
|
2608 | { |
|
|
2609 | --activecnt; |
|
|
2610 | } |
|
|
2611 | |
|
|
2612 | void |
|
|
2613 | ev_now_update (EV_P) |
|
|
2614 | { |
|
|
2615 | time_update (EV_A_ 1e100); |
|
|
2616 | } |
|
|
2617 | |
|
|
2618 | void |
|
|
2619 | ev_suspend (EV_P) |
|
|
2620 | { |
|
|
2621 | ev_now_update (EV_A); |
|
|
2622 | } |
|
|
2623 | |
|
|
2624 | void |
|
|
2625 | ev_resume (EV_P) |
|
|
2626 | { |
|
|
2627 | ev_tstamp mn_prev = mn_now; |
|
|
2628 | |
|
|
2629 | ev_now_update (EV_A); |
|
|
2630 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2631 | #if EV_PERIODIC_ENABLE |
|
|
2632 | /* TODO: really do this? */ |
|
|
2633 | periodics_reschedule (EV_A); |
|
|
2634 | #endif |
|
|
2635 | } |
|
|
2636 | |
1199 | /*****************************************************************************/ |
2637 | /*****************************************************************************/ |
|
|
2638 | /* singly-linked list management, used when the expected list length is short */ |
1200 | |
2639 | |
1201 | inline void |
2640 | inline_size void |
1202 | wlist_add (WL *head, WL elem) |
2641 | wlist_add (WL *head, WL elem) |
1203 | { |
2642 | { |
1204 | elem->next = *head; |
2643 | elem->next = *head; |
1205 | *head = elem; |
2644 | *head = elem; |
1206 | } |
2645 | } |
1207 | |
2646 | |
1208 | inline void |
2647 | inline_size void |
1209 | wlist_del (WL *head, WL elem) |
2648 | wlist_del (WL *head, WL elem) |
1210 | { |
2649 | { |
1211 | while (*head) |
2650 | while (*head) |
1212 | { |
2651 | { |
1213 | if (*head == elem) |
2652 | if (expect_true (*head == elem)) |
1214 | { |
2653 | { |
1215 | *head = elem->next; |
2654 | *head = elem->next; |
1216 | return; |
2655 | break; |
1217 | } |
2656 | } |
1218 | |
2657 | |
1219 | head = &(*head)->next; |
2658 | head = &(*head)->next; |
1220 | } |
2659 | } |
1221 | } |
2660 | } |
1222 | |
2661 | |
|
|
2662 | /* internal, faster, version of ev_clear_pending */ |
1223 | inline void |
2663 | inline_speed void |
1224 | ev_clear_pending (EV_P_ W w) |
2664 | clear_pending (EV_P_ W w) |
1225 | { |
2665 | { |
1226 | if (w->pending) |
2666 | if (w->pending) |
1227 | { |
2667 | { |
1228 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
2668 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1229 | w->pending = 0; |
2669 | w->pending = 0; |
1230 | } |
2670 | } |
1231 | } |
2671 | } |
1232 | |
2672 | |
|
|
2673 | int |
|
|
2674 | ev_clear_pending (EV_P_ void *w) |
|
|
2675 | { |
|
|
2676 | W w_ = (W)w; |
|
|
2677 | int pending = w_->pending; |
|
|
2678 | |
|
|
2679 | if (expect_true (pending)) |
|
|
2680 | { |
|
|
2681 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2682 | p->w = (W)&pending_w; |
|
|
2683 | w_->pending = 0; |
|
|
2684 | return p->events; |
|
|
2685 | } |
|
|
2686 | else |
|
|
2687 | return 0; |
|
|
2688 | } |
|
|
2689 | |
1233 | inline void |
2690 | inline_size void |
|
|
2691 | pri_adjust (EV_P_ W w) |
|
|
2692 | { |
|
|
2693 | int pri = ev_priority (w); |
|
|
2694 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2695 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2696 | ev_set_priority (w, pri); |
|
|
2697 | } |
|
|
2698 | |
|
|
2699 | inline_speed void |
1234 | ev_start (EV_P_ W w, int active) |
2700 | ev_start (EV_P_ W w, int active) |
1235 | { |
2701 | { |
1236 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
2702 | pri_adjust (EV_A_ w); |
1237 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1238 | |
|
|
1239 | w->active = active; |
2703 | w->active = active; |
1240 | ev_ref (EV_A); |
2704 | ev_ref (EV_A); |
1241 | } |
2705 | } |
1242 | |
2706 | |
1243 | inline void |
2707 | inline_size void |
1244 | ev_stop (EV_P_ W w) |
2708 | ev_stop (EV_P_ W w) |
1245 | { |
2709 | { |
1246 | ev_unref (EV_A); |
2710 | ev_unref (EV_A); |
1247 | w->active = 0; |
2711 | w->active = 0; |
1248 | } |
2712 | } |
1249 | |
2713 | |
1250 | /*****************************************************************************/ |
2714 | /*****************************************************************************/ |
1251 | |
2715 | |
1252 | void |
2716 | void noinline |
1253 | ev_io_start (EV_P_ struct ev_io *w) |
2717 | ev_io_start (EV_P_ ev_io *w) |
1254 | { |
2718 | { |
1255 | int fd = w->fd; |
2719 | int fd = w->fd; |
1256 | |
2720 | |
1257 | if (ev_is_active (w)) |
2721 | if (expect_false (ev_is_active (w))) |
1258 | return; |
2722 | return; |
1259 | |
2723 | |
1260 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2724 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2725 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2726 | |
|
|
2727 | EV_FREQUENT_CHECK; |
1261 | |
2728 | |
1262 | ev_start (EV_A_ (W)w, 1); |
2729 | ev_start (EV_A_ (W)w, 1); |
1263 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
2730 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1264 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2731 | wlist_add (&anfds[fd].head, (WL)w); |
1265 | |
2732 | |
1266 | fd_change (EV_A_ fd); |
2733 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1267 | } |
2734 | w->events &= ~EV__IOFDSET; |
1268 | |
2735 | |
1269 | void |
2736 | EV_FREQUENT_CHECK; |
|
|
2737 | } |
|
|
2738 | |
|
|
2739 | void noinline |
1270 | ev_io_stop (EV_P_ struct ev_io *w) |
2740 | ev_io_stop (EV_P_ ev_io *w) |
1271 | { |
2741 | { |
1272 | ev_clear_pending (EV_A_ (W)w); |
2742 | clear_pending (EV_A_ (W)w); |
1273 | if (!ev_is_active (w)) |
2743 | if (expect_false (!ev_is_active (w))) |
1274 | return; |
2744 | return; |
1275 | |
2745 | |
|
|
2746 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2747 | |
|
|
2748 | EV_FREQUENT_CHECK; |
|
|
2749 | |
1276 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2750 | wlist_del (&anfds[w->fd].head, (WL)w); |
1277 | ev_stop (EV_A_ (W)w); |
2751 | ev_stop (EV_A_ (W)w); |
1278 | |
2752 | |
1279 | fd_change (EV_A_ w->fd); |
2753 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
1280 | } |
|
|
1281 | |
2754 | |
1282 | void |
2755 | EV_FREQUENT_CHECK; |
|
|
2756 | } |
|
|
2757 | |
|
|
2758 | void noinline |
1283 | ev_timer_start (EV_P_ struct ev_timer *w) |
2759 | ev_timer_start (EV_P_ ev_timer *w) |
1284 | { |
2760 | { |
1285 | if (ev_is_active (w)) |
2761 | if (expect_false (ev_is_active (w))) |
1286 | return; |
2762 | return; |
1287 | |
2763 | |
1288 | ((WT)w)->at += mn_now; |
2764 | ev_at (w) += mn_now; |
1289 | |
2765 | |
1290 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2766 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1291 | |
2767 | |
|
|
2768 | EV_FREQUENT_CHECK; |
|
|
2769 | |
|
|
2770 | ++timercnt; |
1292 | ev_start (EV_A_ (W)w, ++timercnt); |
2771 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1293 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
2772 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1294 | timers [timercnt - 1] = w; |
2773 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1295 | upheap ((WT *)timers, timercnt - 1); |
2774 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2775 | upheap (timers, ev_active (w)); |
1296 | |
2776 | |
|
|
2777 | EV_FREQUENT_CHECK; |
|
|
2778 | |
1297 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2779 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1298 | } |
2780 | } |
1299 | |
2781 | |
1300 | void |
2782 | void noinline |
1301 | ev_timer_stop (EV_P_ struct ev_timer *w) |
2783 | ev_timer_stop (EV_P_ ev_timer *w) |
1302 | { |
2784 | { |
1303 | ev_clear_pending (EV_A_ (W)w); |
2785 | clear_pending (EV_A_ (W)w); |
1304 | if (!ev_is_active (w)) |
2786 | if (expect_false (!ev_is_active (w))) |
1305 | return; |
2787 | return; |
1306 | |
2788 | |
|
|
2789 | EV_FREQUENT_CHECK; |
|
|
2790 | |
|
|
2791 | { |
|
|
2792 | int active = ev_active (w); |
|
|
2793 | |
1307 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
2794 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
1308 | |
2795 | |
1309 | if (((W)w)->active < timercnt--) |
2796 | --timercnt; |
|
|
2797 | |
|
|
2798 | if (expect_true (active < timercnt + HEAP0)) |
1310 | { |
2799 | { |
1311 | timers [((W)w)->active - 1] = timers [timercnt]; |
2800 | timers [active] = timers [timercnt + HEAP0]; |
1312 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2801 | adjustheap (timers, timercnt, active); |
1313 | } |
2802 | } |
|
|
2803 | } |
1314 | |
2804 | |
1315 | ((WT)w)->at = w->repeat; |
2805 | ev_at (w) -= mn_now; |
1316 | |
2806 | |
1317 | ev_stop (EV_A_ (W)w); |
2807 | ev_stop (EV_A_ (W)w); |
1318 | } |
|
|
1319 | |
2808 | |
1320 | void |
2809 | EV_FREQUENT_CHECK; |
|
|
2810 | } |
|
|
2811 | |
|
|
2812 | void noinline |
1321 | ev_timer_again (EV_P_ struct ev_timer *w) |
2813 | ev_timer_again (EV_P_ ev_timer *w) |
1322 | { |
2814 | { |
|
|
2815 | EV_FREQUENT_CHECK; |
|
|
2816 | |
1323 | if (ev_is_active (w)) |
2817 | if (ev_is_active (w)) |
1324 | { |
2818 | { |
1325 | if (w->repeat) |
2819 | if (w->repeat) |
1326 | { |
2820 | { |
1327 | ((WT)w)->at = mn_now + w->repeat; |
2821 | ev_at (w) = mn_now + w->repeat; |
1328 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
2822 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2823 | adjustheap (timers, timercnt, ev_active (w)); |
1329 | } |
2824 | } |
1330 | else |
2825 | else |
1331 | ev_timer_stop (EV_A_ w); |
2826 | ev_timer_stop (EV_A_ w); |
1332 | } |
2827 | } |
1333 | else if (w->repeat) |
2828 | else if (w->repeat) |
|
|
2829 | { |
|
|
2830 | ev_at (w) = w->repeat; |
1334 | ev_timer_start (EV_A_ w); |
2831 | ev_timer_start (EV_A_ w); |
1335 | } |
2832 | } |
1336 | |
2833 | |
1337 | void |
2834 | EV_FREQUENT_CHECK; |
|
|
2835 | } |
|
|
2836 | |
|
|
2837 | ev_tstamp |
|
|
2838 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2839 | { |
|
|
2840 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2841 | } |
|
|
2842 | |
|
|
2843 | #if EV_PERIODIC_ENABLE |
|
|
2844 | void noinline |
1338 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
2845 | ev_periodic_start (EV_P_ ev_periodic *w) |
1339 | { |
2846 | { |
1340 | if (ev_is_active (w)) |
2847 | if (expect_false (ev_is_active (w))) |
1341 | return; |
2848 | return; |
1342 | |
2849 | |
1343 | if (w->reschedule_cb) |
2850 | if (w->reschedule_cb) |
1344 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
2851 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1345 | else if (w->interval) |
2852 | else if (w->interval) |
1346 | { |
2853 | { |
1347 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2854 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1348 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2855 | periodic_recalc (EV_A_ w); |
1349 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1350 | } |
2856 | } |
|
|
2857 | else |
|
|
2858 | ev_at (w) = w->offset; |
1351 | |
2859 | |
|
|
2860 | EV_FREQUENT_CHECK; |
|
|
2861 | |
|
|
2862 | ++periodiccnt; |
1352 | ev_start (EV_A_ (W)w, ++periodiccnt); |
2863 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1353 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
2864 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1354 | periodics [periodiccnt - 1] = w; |
2865 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1355 | upheap ((WT *)periodics, periodiccnt - 1); |
2866 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2867 | upheap (periodics, ev_active (w)); |
1356 | |
2868 | |
|
|
2869 | EV_FREQUENT_CHECK; |
|
|
2870 | |
1357 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2871 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1358 | } |
2872 | } |
1359 | |
2873 | |
1360 | void |
2874 | void noinline |
1361 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
2875 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1362 | { |
2876 | { |
1363 | ev_clear_pending (EV_A_ (W)w); |
2877 | clear_pending (EV_A_ (W)w); |
1364 | if (!ev_is_active (w)) |
2878 | if (expect_false (!ev_is_active (w))) |
1365 | return; |
2879 | return; |
1366 | |
2880 | |
|
|
2881 | EV_FREQUENT_CHECK; |
|
|
2882 | |
|
|
2883 | { |
|
|
2884 | int active = ev_active (w); |
|
|
2885 | |
1367 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
2886 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1368 | |
2887 | |
1369 | if (((W)w)->active < periodiccnt--) |
2888 | --periodiccnt; |
|
|
2889 | |
|
|
2890 | if (expect_true (active < periodiccnt + HEAP0)) |
1370 | { |
2891 | { |
1371 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
2892 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1372 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
2893 | adjustheap (periodics, periodiccnt, active); |
1373 | } |
2894 | } |
|
|
2895 | } |
1374 | |
2896 | |
1375 | ev_stop (EV_A_ (W)w); |
2897 | ev_stop (EV_A_ (W)w); |
1376 | } |
|
|
1377 | |
2898 | |
1378 | void |
2899 | EV_FREQUENT_CHECK; |
|
|
2900 | } |
|
|
2901 | |
|
|
2902 | void noinline |
1379 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
2903 | ev_periodic_again (EV_P_ ev_periodic *w) |
1380 | { |
2904 | { |
|
|
2905 | /* TODO: use adjustheap and recalculation */ |
1381 | ev_periodic_stop (EV_A_ w); |
2906 | ev_periodic_stop (EV_A_ w); |
1382 | ev_periodic_start (EV_A_ w); |
2907 | ev_periodic_start (EV_A_ w); |
1383 | } |
2908 | } |
1384 | |
2909 | #endif |
1385 | void |
|
|
1386 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1387 | { |
|
|
1388 | if (ev_is_active (w)) |
|
|
1389 | return; |
|
|
1390 | |
|
|
1391 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1392 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1393 | idles [idlecnt - 1] = w; |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | void |
|
|
1397 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1398 | { |
|
|
1399 | ev_clear_pending (EV_A_ (W)w); |
|
|
1400 | if (ev_is_active (w)) |
|
|
1401 | return; |
|
|
1402 | |
|
|
1403 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1404 | ev_stop (EV_A_ (W)w); |
|
|
1405 | } |
|
|
1406 | |
|
|
1407 | void |
|
|
1408 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1409 | { |
|
|
1410 | if (ev_is_active (w)) |
|
|
1411 | return; |
|
|
1412 | |
|
|
1413 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1414 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1415 | prepares [preparecnt - 1] = w; |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | void |
|
|
1419 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1420 | { |
|
|
1421 | ev_clear_pending (EV_A_ (W)w); |
|
|
1422 | if (ev_is_active (w)) |
|
|
1423 | return; |
|
|
1424 | |
|
|
1425 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1426 | ev_stop (EV_A_ (W)w); |
|
|
1427 | } |
|
|
1428 | |
|
|
1429 | void |
|
|
1430 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1431 | { |
|
|
1432 | if (ev_is_active (w)) |
|
|
1433 | return; |
|
|
1434 | |
|
|
1435 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1436 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1437 | checks [checkcnt - 1] = w; |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | void |
|
|
1441 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1442 | { |
|
|
1443 | ev_clear_pending (EV_A_ (W)w); |
|
|
1444 | if (ev_is_active (w)) |
|
|
1445 | return; |
|
|
1446 | |
|
|
1447 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1448 | ev_stop (EV_A_ (W)w); |
|
|
1449 | } |
|
|
1450 | |
2910 | |
1451 | #ifndef SA_RESTART |
2911 | #ifndef SA_RESTART |
1452 | # define SA_RESTART 0 |
2912 | # define SA_RESTART 0 |
1453 | #endif |
2913 | #endif |
1454 | |
2914 | |
1455 | void |
2915 | #if EV_SIGNAL_ENABLE |
|
|
2916 | |
|
|
2917 | void noinline |
1456 | ev_signal_start (EV_P_ struct ev_signal *w) |
2918 | ev_signal_start (EV_P_ ev_signal *w) |
1457 | { |
2919 | { |
|
|
2920 | if (expect_false (ev_is_active (w))) |
|
|
2921 | return; |
|
|
2922 | |
|
|
2923 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2924 | |
1458 | #if EV_MULTIPLICITY |
2925 | #if EV_MULTIPLICITY |
1459 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
2926 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2927 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2928 | |
|
|
2929 | signals [w->signum - 1].loop = EV_A; |
|
|
2930 | #endif |
|
|
2931 | |
|
|
2932 | EV_FREQUENT_CHECK; |
|
|
2933 | |
|
|
2934 | #if EV_USE_SIGNALFD |
|
|
2935 | if (sigfd == -2) |
|
|
2936 | { |
|
|
2937 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2938 | if (sigfd < 0 && errno == EINVAL) |
|
|
2939 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2940 | |
|
|
2941 | if (sigfd >= 0) |
|
|
2942 | { |
|
|
2943 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
2944 | |
|
|
2945 | sigemptyset (&sigfd_set); |
|
|
2946 | |
|
|
2947 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2948 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2949 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2950 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2951 | } |
|
|
2952 | } |
|
|
2953 | |
|
|
2954 | if (sigfd >= 0) |
|
|
2955 | { |
|
|
2956 | /* TODO: check .head */ |
|
|
2957 | sigaddset (&sigfd_set, w->signum); |
|
|
2958 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2959 | |
|
|
2960 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2961 | } |
|
|
2962 | #endif |
|
|
2963 | |
|
|
2964 | ev_start (EV_A_ (W)w, 1); |
|
|
2965 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2966 | |
|
|
2967 | if (!((WL)w)->next) |
|
|
2968 | # if EV_USE_SIGNALFD |
|
|
2969 | if (sigfd < 0) /*TODO*/ |
1460 | #endif |
2970 | # endif |
1461 | if (ev_is_active (w)) |
2971 | { |
|
|
2972 | # ifdef _WIN32 |
|
|
2973 | evpipe_init (EV_A); |
|
|
2974 | |
|
|
2975 | signal (w->signum, ev_sighandler); |
|
|
2976 | # else |
|
|
2977 | struct sigaction sa; |
|
|
2978 | |
|
|
2979 | evpipe_init (EV_A); |
|
|
2980 | |
|
|
2981 | sa.sa_handler = ev_sighandler; |
|
|
2982 | sigfillset (&sa.sa_mask); |
|
|
2983 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2984 | sigaction (w->signum, &sa, 0); |
|
|
2985 | |
|
|
2986 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
2987 | { |
|
|
2988 | sigemptyset (&sa.sa_mask); |
|
|
2989 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2990 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2991 | } |
|
|
2992 | #endif |
|
|
2993 | } |
|
|
2994 | |
|
|
2995 | EV_FREQUENT_CHECK; |
|
|
2996 | } |
|
|
2997 | |
|
|
2998 | void noinline |
|
|
2999 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
3000 | { |
|
|
3001 | clear_pending (EV_A_ (W)w); |
|
|
3002 | if (expect_false (!ev_is_active (w))) |
1462 | return; |
3003 | return; |
1463 | |
3004 | |
1464 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
3005 | EV_FREQUENT_CHECK; |
|
|
3006 | |
|
|
3007 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
3008 | ev_stop (EV_A_ (W)w); |
|
|
3009 | |
|
|
3010 | if (!signals [w->signum - 1].head) |
|
|
3011 | { |
|
|
3012 | #if EV_MULTIPLICITY |
|
|
3013 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3014 | #endif |
|
|
3015 | #if EV_USE_SIGNALFD |
|
|
3016 | if (sigfd >= 0) |
|
|
3017 | { |
|
|
3018 | sigset_t ss; |
|
|
3019 | |
|
|
3020 | sigemptyset (&ss); |
|
|
3021 | sigaddset (&ss, w->signum); |
|
|
3022 | sigdelset (&sigfd_set, w->signum); |
|
|
3023 | |
|
|
3024 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3025 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
3026 | } |
|
|
3027 | else |
|
|
3028 | #endif |
|
|
3029 | signal (w->signum, SIG_DFL); |
|
|
3030 | } |
|
|
3031 | |
|
|
3032 | EV_FREQUENT_CHECK; |
|
|
3033 | } |
|
|
3034 | |
|
|
3035 | #endif |
|
|
3036 | |
|
|
3037 | #if EV_CHILD_ENABLE |
|
|
3038 | |
|
|
3039 | void |
|
|
3040 | ev_child_start (EV_P_ ev_child *w) |
|
|
3041 | { |
|
|
3042 | #if EV_MULTIPLICITY |
|
|
3043 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
3044 | #endif |
|
|
3045 | if (expect_false (ev_is_active (w))) |
|
|
3046 | return; |
|
|
3047 | |
|
|
3048 | EV_FREQUENT_CHECK; |
1465 | |
3049 | |
1466 | ev_start (EV_A_ (W)w, 1); |
3050 | ev_start (EV_A_ (W)w, 1); |
1467 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
3051 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1468 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1469 | |
3052 | |
1470 | if (!((WL)w)->next) |
3053 | EV_FREQUENT_CHECK; |
|
|
3054 | } |
|
|
3055 | |
|
|
3056 | void |
|
|
3057 | ev_child_stop (EV_P_ ev_child *w) |
|
|
3058 | { |
|
|
3059 | clear_pending (EV_A_ (W)w); |
|
|
3060 | if (expect_false (!ev_is_active (w))) |
|
|
3061 | return; |
|
|
3062 | |
|
|
3063 | EV_FREQUENT_CHECK; |
|
|
3064 | |
|
|
3065 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3066 | ev_stop (EV_A_ (W)w); |
|
|
3067 | |
|
|
3068 | EV_FREQUENT_CHECK; |
|
|
3069 | } |
|
|
3070 | |
|
|
3071 | #endif |
|
|
3072 | |
|
|
3073 | #if EV_STAT_ENABLE |
|
|
3074 | |
|
|
3075 | # ifdef _WIN32 |
|
|
3076 | # undef lstat |
|
|
3077 | # define lstat(a,b) _stati64 (a,b) |
|
|
3078 | # endif |
|
|
3079 | |
|
|
3080 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3081 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
3082 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
3083 | |
|
|
3084 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
3085 | |
|
|
3086 | #if EV_USE_INOTIFY |
|
|
3087 | |
|
|
3088 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
3089 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
3090 | |
|
|
3091 | static void noinline |
|
|
3092 | infy_add (EV_P_ ev_stat *w) |
|
|
3093 | { |
|
|
3094 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
3095 | |
|
|
3096 | if (w->wd >= 0) |
|
|
3097 | { |
|
|
3098 | struct statfs sfs; |
|
|
3099 | |
|
|
3100 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3101 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3102 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3103 | |
|
|
3104 | if (!fs_2625) |
|
|
3105 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3106 | else if (!statfs (w->path, &sfs) |
|
|
3107 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3108 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3109 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3110 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
3111 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
3112 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
3113 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
3114 | else |
|
|
3115 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
1471 | { |
3116 | } |
1472 | #if WIN32 |
3117 | else |
1473 | signal (w->signum, sighandler); |
3118 | { |
|
|
3119 | /* can't use inotify, continue to stat */ |
|
|
3120 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3121 | |
|
|
3122 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
3123 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
3124 | /* but an efficiency issue only */ |
|
|
3125 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
3126 | { |
|
|
3127 | char path [4096]; |
|
|
3128 | strcpy (path, w->path); |
|
|
3129 | |
|
|
3130 | do |
|
|
3131 | { |
|
|
3132 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
3133 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
3134 | |
|
|
3135 | char *pend = strrchr (path, '/'); |
|
|
3136 | |
|
|
3137 | if (!pend || pend == path) |
|
|
3138 | break; |
|
|
3139 | |
|
|
3140 | *pend = 0; |
|
|
3141 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
3142 | } |
|
|
3143 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
3144 | } |
|
|
3145 | } |
|
|
3146 | |
|
|
3147 | if (w->wd >= 0) |
|
|
3148 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3149 | |
|
|
3150 | /* now re-arm timer, if required */ |
|
|
3151 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3152 | ev_timer_again (EV_A_ &w->timer); |
|
|
3153 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3154 | } |
|
|
3155 | |
|
|
3156 | static void noinline |
|
|
3157 | infy_del (EV_P_ ev_stat *w) |
|
|
3158 | { |
|
|
3159 | int slot; |
|
|
3160 | int wd = w->wd; |
|
|
3161 | |
|
|
3162 | if (wd < 0) |
|
|
3163 | return; |
|
|
3164 | |
|
|
3165 | w->wd = -2; |
|
|
3166 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
3167 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
3168 | |
|
|
3169 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
3170 | inotify_rm_watch (fs_fd, wd); |
|
|
3171 | } |
|
|
3172 | |
|
|
3173 | static void noinline |
|
|
3174 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
3175 | { |
|
|
3176 | if (slot < 0) |
|
|
3177 | /* overflow, need to check for all hash slots */ |
|
|
3178 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3179 | infy_wd (EV_A_ slot, wd, ev); |
|
|
3180 | else |
|
|
3181 | { |
|
|
3182 | WL w_; |
|
|
3183 | |
|
|
3184 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
3185 | { |
|
|
3186 | ev_stat *w = (ev_stat *)w_; |
|
|
3187 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
3188 | |
|
|
3189 | if (w->wd == wd || wd == -1) |
|
|
3190 | { |
|
|
3191 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
3192 | { |
|
|
3193 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3194 | w->wd = -1; |
|
|
3195 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3196 | } |
|
|
3197 | |
|
|
3198 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
3199 | } |
|
|
3200 | } |
|
|
3201 | } |
|
|
3202 | } |
|
|
3203 | |
|
|
3204 | static void |
|
|
3205 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
3206 | { |
|
|
3207 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
3208 | int ofs; |
|
|
3209 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
3210 | |
|
|
3211 | for (ofs = 0; ofs < len; ) |
|
|
3212 | { |
|
|
3213 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
3214 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3215 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3216 | } |
|
|
3217 | } |
|
|
3218 | |
|
|
3219 | inline_size void |
|
|
3220 | ev_check_2625 (EV_P) |
|
|
3221 | { |
|
|
3222 | /* kernels < 2.6.25 are borked |
|
|
3223 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
3224 | */ |
|
|
3225 | if (ev_linux_version () < 0x020619) |
|
|
3226 | return; |
|
|
3227 | |
|
|
3228 | fs_2625 = 1; |
|
|
3229 | } |
|
|
3230 | |
|
|
3231 | inline_size int |
|
|
3232 | infy_newfd (void) |
|
|
3233 | { |
|
|
3234 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3235 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3236 | if (fd >= 0) |
|
|
3237 | return fd; |
|
|
3238 | #endif |
|
|
3239 | return inotify_init (); |
|
|
3240 | } |
|
|
3241 | |
|
|
3242 | inline_size void |
|
|
3243 | infy_init (EV_P) |
|
|
3244 | { |
|
|
3245 | if (fs_fd != -2) |
|
|
3246 | return; |
|
|
3247 | |
|
|
3248 | fs_fd = -1; |
|
|
3249 | |
|
|
3250 | ev_check_2625 (EV_A); |
|
|
3251 | |
|
|
3252 | fs_fd = infy_newfd (); |
|
|
3253 | |
|
|
3254 | if (fs_fd >= 0) |
|
|
3255 | { |
|
|
3256 | fd_intern (fs_fd); |
|
|
3257 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3258 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3259 | ev_io_start (EV_A_ &fs_w); |
|
|
3260 | ev_unref (EV_A); |
|
|
3261 | } |
|
|
3262 | } |
|
|
3263 | |
|
|
3264 | inline_size void |
|
|
3265 | infy_fork (EV_P) |
|
|
3266 | { |
|
|
3267 | int slot; |
|
|
3268 | |
|
|
3269 | if (fs_fd < 0) |
|
|
3270 | return; |
|
|
3271 | |
|
|
3272 | ev_ref (EV_A); |
|
|
3273 | ev_io_stop (EV_A_ &fs_w); |
|
|
3274 | close (fs_fd); |
|
|
3275 | fs_fd = infy_newfd (); |
|
|
3276 | |
|
|
3277 | if (fs_fd >= 0) |
|
|
3278 | { |
|
|
3279 | fd_intern (fs_fd); |
|
|
3280 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3281 | ev_io_start (EV_A_ &fs_w); |
|
|
3282 | ev_unref (EV_A); |
|
|
3283 | } |
|
|
3284 | |
|
|
3285 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3286 | { |
|
|
3287 | WL w_ = fs_hash [slot].head; |
|
|
3288 | fs_hash [slot].head = 0; |
|
|
3289 | |
|
|
3290 | while (w_) |
|
|
3291 | { |
|
|
3292 | ev_stat *w = (ev_stat *)w_; |
|
|
3293 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3294 | |
|
|
3295 | w->wd = -1; |
|
|
3296 | |
|
|
3297 | if (fs_fd >= 0) |
|
|
3298 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3299 | else |
|
|
3300 | { |
|
|
3301 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3302 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3303 | ev_timer_again (EV_A_ &w->timer); |
|
|
3304 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3305 | } |
|
|
3306 | } |
|
|
3307 | } |
|
|
3308 | } |
|
|
3309 | |
|
|
3310 | #endif |
|
|
3311 | |
|
|
3312 | #ifdef _WIN32 |
|
|
3313 | # define EV_LSTAT(p,b) _stati64 (p, b) |
1474 | #else |
3314 | #else |
1475 | struct sigaction sa; |
3315 | # define EV_LSTAT(p,b) lstat (p, b) |
1476 | sa.sa_handler = sighandler; |
|
|
1477 | sigfillset (&sa.sa_mask); |
|
|
1478 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1479 | sigaction (w->signum, &sa, 0); |
|
|
1480 | #endif |
3316 | #endif |
1481 | } |
|
|
1482 | } |
|
|
1483 | |
3317 | |
1484 | void |
3318 | void |
1485 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3319 | ev_stat_stat (EV_P_ ev_stat *w) |
1486 | { |
3320 | { |
1487 | ev_clear_pending (EV_A_ (W)w); |
3321 | if (lstat (w->path, &w->attr) < 0) |
1488 | if (!ev_is_active (w)) |
3322 | w->attr.st_nlink = 0; |
|
|
3323 | else if (!w->attr.st_nlink) |
|
|
3324 | w->attr.st_nlink = 1; |
|
|
3325 | } |
|
|
3326 | |
|
|
3327 | static void noinline |
|
|
3328 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3329 | { |
|
|
3330 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3331 | |
|
|
3332 | ev_statdata prev = w->attr; |
|
|
3333 | ev_stat_stat (EV_A_ w); |
|
|
3334 | |
|
|
3335 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3336 | if ( |
|
|
3337 | prev.st_dev != w->attr.st_dev |
|
|
3338 | || prev.st_ino != w->attr.st_ino |
|
|
3339 | || prev.st_mode != w->attr.st_mode |
|
|
3340 | || prev.st_nlink != w->attr.st_nlink |
|
|
3341 | || prev.st_uid != w->attr.st_uid |
|
|
3342 | || prev.st_gid != w->attr.st_gid |
|
|
3343 | || prev.st_rdev != w->attr.st_rdev |
|
|
3344 | || prev.st_size != w->attr.st_size |
|
|
3345 | || prev.st_atime != w->attr.st_atime |
|
|
3346 | || prev.st_mtime != w->attr.st_mtime |
|
|
3347 | || prev.st_ctime != w->attr.st_ctime |
|
|
3348 | ) { |
|
|
3349 | /* we only update w->prev on actual differences */ |
|
|
3350 | /* in case we test more often than invoke the callback, */ |
|
|
3351 | /* to ensure that prev is always different to attr */ |
|
|
3352 | w->prev = prev; |
|
|
3353 | |
|
|
3354 | #if EV_USE_INOTIFY |
|
|
3355 | if (fs_fd >= 0) |
|
|
3356 | { |
|
|
3357 | infy_del (EV_A_ w); |
|
|
3358 | infy_add (EV_A_ w); |
|
|
3359 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3360 | } |
|
|
3361 | #endif |
|
|
3362 | |
|
|
3363 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3364 | } |
|
|
3365 | } |
|
|
3366 | |
|
|
3367 | void |
|
|
3368 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3369 | { |
|
|
3370 | if (expect_false (ev_is_active (w))) |
1489 | return; |
3371 | return; |
1490 | |
3372 | |
1491 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3373 | ev_stat_stat (EV_A_ w); |
|
|
3374 | |
|
|
3375 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3376 | w->interval = MIN_STAT_INTERVAL; |
|
|
3377 | |
|
|
3378 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3379 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3380 | |
|
|
3381 | #if EV_USE_INOTIFY |
|
|
3382 | infy_init (EV_A); |
|
|
3383 | |
|
|
3384 | if (fs_fd >= 0) |
|
|
3385 | infy_add (EV_A_ w); |
|
|
3386 | else |
|
|
3387 | #endif |
|
|
3388 | { |
|
|
3389 | ev_timer_again (EV_A_ &w->timer); |
|
|
3390 | ev_unref (EV_A); |
|
|
3391 | } |
|
|
3392 | |
|
|
3393 | ev_start (EV_A_ (W)w, 1); |
|
|
3394 | |
|
|
3395 | EV_FREQUENT_CHECK; |
|
|
3396 | } |
|
|
3397 | |
|
|
3398 | void |
|
|
3399 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3400 | { |
|
|
3401 | clear_pending (EV_A_ (W)w); |
|
|
3402 | if (expect_false (!ev_is_active (w))) |
|
|
3403 | return; |
|
|
3404 | |
|
|
3405 | EV_FREQUENT_CHECK; |
|
|
3406 | |
|
|
3407 | #if EV_USE_INOTIFY |
|
|
3408 | infy_del (EV_A_ w); |
|
|
3409 | #endif |
|
|
3410 | |
|
|
3411 | if (ev_is_active (&w->timer)) |
|
|
3412 | { |
|
|
3413 | ev_ref (EV_A); |
|
|
3414 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3415 | } |
|
|
3416 | |
1492 | ev_stop (EV_A_ (W)w); |
3417 | ev_stop (EV_A_ (W)w); |
1493 | |
3418 | |
1494 | if (!signals [w->signum - 1].head) |
3419 | EV_FREQUENT_CHECK; |
1495 | signal (w->signum, SIG_DFL); |
|
|
1496 | } |
3420 | } |
|
|
3421 | #endif |
1497 | |
3422 | |
|
|
3423 | #if EV_IDLE_ENABLE |
1498 | void |
3424 | void |
1499 | ev_child_start (EV_P_ struct ev_child *w) |
3425 | ev_idle_start (EV_P_ ev_idle *w) |
1500 | { |
3426 | { |
1501 | #if EV_MULTIPLICITY |
|
|
1502 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1503 | #endif |
|
|
1504 | if (ev_is_active (w)) |
3427 | if (expect_false (ev_is_active (w))) |
1505 | return; |
3428 | return; |
1506 | |
3429 | |
|
|
3430 | pri_adjust (EV_A_ (W)w); |
|
|
3431 | |
|
|
3432 | EV_FREQUENT_CHECK; |
|
|
3433 | |
|
|
3434 | { |
|
|
3435 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3436 | |
|
|
3437 | ++idleall; |
|
|
3438 | ev_start (EV_A_ (W)w, active); |
|
|
3439 | |
|
|
3440 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3441 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3442 | } |
|
|
3443 | |
|
|
3444 | EV_FREQUENT_CHECK; |
|
|
3445 | } |
|
|
3446 | |
|
|
3447 | void |
|
|
3448 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3449 | { |
|
|
3450 | clear_pending (EV_A_ (W)w); |
|
|
3451 | if (expect_false (!ev_is_active (w))) |
|
|
3452 | return; |
|
|
3453 | |
|
|
3454 | EV_FREQUENT_CHECK; |
|
|
3455 | |
|
|
3456 | { |
|
|
3457 | int active = ev_active (w); |
|
|
3458 | |
|
|
3459 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3460 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3461 | |
|
|
3462 | ev_stop (EV_A_ (W)w); |
|
|
3463 | --idleall; |
|
|
3464 | } |
|
|
3465 | |
|
|
3466 | EV_FREQUENT_CHECK; |
|
|
3467 | } |
|
|
3468 | #endif |
|
|
3469 | |
|
|
3470 | #if EV_PREPARE_ENABLE |
|
|
3471 | void |
|
|
3472 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3473 | { |
|
|
3474 | if (expect_false (ev_is_active (w))) |
|
|
3475 | return; |
|
|
3476 | |
|
|
3477 | EV_FREQUENT_CHECK; |
|
|
3478 | |
|
|
3479 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3480 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3481 | prepares [preparecnt - 1] = w; |
|
|
3482 | |
|
|
3483 | EV_FREQUENT_CHECK; |
|
|
3484 | } |
|
|
3485 | |
|
|
3486 | void |
|
|
3487 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3488 | { |
|
|
3489 | clear_pending (EV_A_ (W)w); |
|
|
3490 | if (expect_false (!ev_is_active (w))) |
|
|
3491 | return; |
|
|
3492 | |
|
|
3493 | EV_FREQUENT_CHECK; |
|
|
3494 | |
|
|
3495 | { |
|
|
3496 | int active = ev_active (w); |
|
|
3497 | |
|
|
3498 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3499 | ev_active (prepares [active - 1]) = active; |
|
|
3500 | } |
|
|
3501 | |
|
|
3502 | ev_stop (EV_A_ (W)w); |
|
|
3503 | |
|
|
3504 | EV_FREQUENT_CHECK; |
|
|
3505 | } |
|
|
3506 | #endif |
|
|
3507 | |
|
|
3508 | #if EV_CHECK_ENABLE |
|
|
3509 | void |
|
|
3510 | ev_check_start (EV_P_ ev_check *w) |
|
|
3511 | { |
|
|
3512 | if (expect_false (ev_is_active (w))) |
|
|
3513 | return; |
|
|
3514 | |
|
|
3515 | EV_FREQUENT_CHECK; |
|
|
3516 | |
|
|
3517 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3518 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3519 | checks [checkcnt - 1] = w; |
|
|
3520 | |
|
|
3521 | EV_FREQUENT_CHECK; |
|
|
3522 | } |
|
|
3523 | |
|
|
3524 | void |
|
|
3525 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3526 | { |
|
|
3527 | clear_pending (EV_A_ (W)w); |
|
|
3528 | if (expect_false (!ev_is_active (w))) |
|
|
3529 | return; |
|
|
3530 | |
|
|
3531 | EV_FREQUENT_CHECK; |
|
|
3532 | |
|
|
3533 | { |
|
|
3534 | int active = ev_active (w); |
|
|
3535 | |
|
|
3536 | checks [active - 1] = checks [--checkcnt]; |
|
|
3537 | ev_active (checks [active - 1]) = active; |
|
|
3538 | } |
|
|
3539 | |
|
|
3540 | ev_stop (EV_A_ (W)w); |
|
|
3541 | |
|
|
3542 | EV_FREQUENT_CHECK; |
|
|
3543 | } |
|
|
3544 | #endif |
|
|
3545 | |
|
|
3546 | #if EV_EMBED_ENABLE |
|
|
3547 | void noinline |
|
|
3548 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3549 | { |
|
|
3550 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
3551 | } |
|
|
3552 | |
|
|
3553 | static void |
|
|
3554 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3555 | { |
|
|
3556 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3557 | |
|
|
3558 | if (ev_cb (w)) |
|
|
3559 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3560 | else |
|
|
3561 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
3562 | } |
|
|
3563 | |
|
|
3564 | static void |
|
|
3565 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3566 | { |
|
|
3567 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3568 | |
|
|
3569 | { |
|
|
3570 | EV_P = w->other; |
|
|
3571 | |
|
|
3572 | while (fdchangecnt) |
|
|
3573 | { |
|
|
3574 | fd_reify (EV_A); |
|
|
3575 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
3576 | } |
|
|
3577 | } |
|
|
3578 | } |
|
|
3579 | |
|
|
3580 | static void |
|
|
3581 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3582 | { |
|
|
3583 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3584 | |
|
|
3585 | ev_embed_stop (EV_A_ w); |
|
|
3586 | |
|
|
3587 | { |
|
|
3588 | EV_P = w->other; |
|
|
3589 | |
|
|
3590 | ev_loop_fork (EV_A); |
|
|
3591 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
3592 | } |
|
|
3593 | |
|
|
3594 | ev_embed_start (EV_A_ w); |
|
|
3595 | } |
|
|
3596 | |
|
|
3597 | #if 0 |
|
|
3598 | static void |
|
|
3599 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3600 | { |
|
|
3601 | ev_idle_stop (EV_A_ idle); |
|
|
3602 | } |
|
|
3603 | #endif |
|
|
3604 | |
|
|
3605 | void |
|
|
3606 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3607 | { |
|
|
3608 | if (expect_false (ev_is_active (w))) |
|
|
3609 | return; |
|
|
3610 | |
|
|
3611 | { |
|
|
3612 | EV_P = w->other; |
|
|
3613 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3614 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3615 | } |
|
|
3616 | |
|
|
3617 | EV_FREQUENT_CHECK; |
|
|
3618 | |
|
|
3619 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3620 | ev_io_start (EV_A_ &w->io); |
|
|
3621 | |
|
|
3622 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3623 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3624 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3625 | |
|
|
3626 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3627 | ev_fork_start (EV_A_ &w->fork); |
|
|
3628 | |
|
|
3629 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3630 | |
1507 | ev_start (EV_A_ (W)w, 1); |
3631 | ev_start (EV_A_ (W)w, 1); |
1508 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1509 | } |
|
|
1510 | |
3632 | |
|
|
3633 | EV_FREQUENT_CHECK; |
|
|
3634 | } |
|
|
3635 | |
1511 | void |
3636 | void |
1512 | ev_child_stop (EV_P_ struct ev_child *w) |
3637 | ev_embed_stop (EV_P_ ev_embed *w) |
1513 | { |
3638 | { |
1514 | ev_clear_pending (EV_A_ (W)w); |
3639 | clear_pending (EV_A_ (W)w); |
1515 | if (ev_is_active (w)) |
3640 | if (expect_false (!ev_is_active (w))) |
1516 | return; |
3641 | return; |
1517 | |
3642 | |
1518 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3643 | EV_FREQUENT_CHECK; |
|
|
3644 | |
|
|
3645 | ev_io_stop (EV_A_ &w->io); |
|
|
3646 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3647 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3648 | |
1519 | ev_stop (EV_A_ (W)w); |
3649 | ev_stop (EV_A_ (W)w); |
|
|
3650 | |
|
|
3651 | EV_FREQUENT_CHECK; |
1520 | } |
3652 | } |
|
|
3653 | #endif |
|
|
3654 | |
|
|
3655 | #if EV_FORK_ENABLE |
|
|
3656 | void |
|
|
3657 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3658 | { |
|
|
3659 | if (expect_false (ev_is_active (w))) |
|
|
3660 | return; |
|
|
3661 | |
|
|
3662 | EV_FREQUENT_CHECK; |
|
|
3663 | |
|
|
3664 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3665 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3666 | forks [forkcnt - 1] = w; |
|
|
3667 | |
|
|
3668 | EV_FREQUENT_CHECK; |
|
|
3669 | } |
|
|
3670 | |
|
|
3671 | void |
|
|
3672 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3673 | { |
|
|
3674 | clear_pending (EV_A_ (W)w); |
|
|
3675 | if (expect_false (!ev_is_active (w))) |
|
|
3676 | return; |
|
|
3677 | |
|
|
3678 | EV_FREQUENT_CHECK; |
|
|
3679 | |
|
|
3680 | { |
|
|
3681 | int active = ev_active (w); |
|
|
3682 | |
|
|
3683 | forks [active - 1] = forks [--forkcnt]; |
|
|
3684 | ev_active (forks [active - 1]) = active; |
|
|
3685 | } |
|
|
3686 | |
|
|
3687 | ev_stop (EV_A_ (W)w); |
|
|
3688 | |
|
|
3689 | EV_FREQUENT_CHECK; |
|
|
3690 | } |
|
|
3691 | #endif |
|
|
3692 | |
|
|
3693 | #if EV_CLEANUP_ENABLE |
|
|
3694 | void |
|
|
3695 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
3696 | { |
|
|
3697 | if (expect_false (ev_is_active (w))) |
|
|
3698 | return; |
|
|
3699 | |
|
|
3700 | EV_FREQUENT_CHECK; |
|
|
3701 | |
|
|
3702 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3703 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3704 | cleanups [cleanupcnt - 1] = w; |
|
|
3705 | |
|
|
3706 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3707 | ev_unref (EV_A); |
|
|
3708 | EV_FREQUENT_CHECK; |
|
|
3709 | } |
|
|
3710 | |
|
|
3711 | void |
|
|
3712 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3713 | { |
|
|
3714 | clear_pending (EV_A_ (W)w); |
|
|
3715 | if (expect_false (!ev_is_active (w))) |
|
|
3716 | return; |
|
|
3717 | |
|
|
3718 | EV_FREQUENT_CHECK; |
|
|
3719 | ev_ref (EV_A); |
|
|
3720 | |
|
|
3721 | { |
|
|
3722 | int active = ev_active (w); |
|
|
3723 | |
|
|
3724 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3725 | ev_active (cleanups [active - 1]) = active; |
|
|
3726 | } |
|
|
3727 | |
|
|
3728 | ev_stop (EV_A_ (W)w); |
|
|
3729 | |
|
|
3730 | EV_FREQUENT_CHECK; |
|
|
3731 | } |
|
|
3732 | #endif |
|
|
3733 | |
|
|
3734 | #if EV_ASYNC_ENABLE |
|
|
3735 | void |
|
|
3736 | ev_async_start (EV_P_ ev_async *w) |
|
|
3737 | { |
|
|
3738 | if (expect_false (ev_is_active (w))) |
|
|
3739 | return; |
|
|
3740 | |
|
|
3741 | w->sent = 0; |
|
|
3742 | |
|
|
3743 | evpipe_init (EV_A); |
|
|
3744 | |
|
|
3745 | EV_FREQUENT_CHECK; |
|
|
3746 | |
|
|
3747 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3748 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3749 | asyncs [asynccnt - 1] = w; |
|
|
3750 | |
|
|
3751 | EV_FREQUENT_CHECK; |
|
|
3752 | } |
|
|
3753 | |
|
|
3754 | void |
|
|
3755 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3756 | { |
|
|
3757 | clear_pending (EV_A_ (W)w); |
|
|
3758 | if (expect_false (!ev_is_active (w))) |
|
|
3759 | return; |
|
|
3760 | |
|
|
3761 | EV_FREQUENT_CHECK; |
|
|
3762 | |
|
|
3763 | { |
|
|
3764 | int active = ev_active (w); |
|
|
3765 | |
|
|
3766 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3767 | ev_active (asyncs [active - 1]) = active; |
|
|
3768 | } |
|
|
3769 | |
|
|
3770 | ev_stop (EV_A_ (W)w); |
|
|
3771 | |
|
|
3772 | EV_FREQUENT_CHECK; |
|
|
3773 | } |
|
|
3774 | |
|
|
3775 | void |
|
|
3776 | ev_async_send (EV_P_ ev_async *w) |
|
|
3777 | { |
|
|
3778 | w->sent = 1; |
|
|
3779 | evpipe_write (EV_A_ &async_pending); |
|
|
3780 | } |
|
|
3781 | #endif |
1521 | |
3782 | |
1522 | /*****************************************************************************/ |
3783 | /*****************************************************************************/ |
1523 | |
3784 | |
1524 | struct ev_once |
3785 | struct ev_once |
1525 | { |
3786 | { |
1526 | struct ev_io io; |
3787 | ev_io io; |
1527 | struct ev_timer to; |
3788 | ev_timer to; |
1528 | void (*cb)(int revents, void *arg); |
3789 | void (*cb)(int revents, void *arg); |
1529 | void *arg; |
3790 | void *arg; |
1530 | }; |
3791 | }; |
1531 | |
3792 | |
1532 | static void |
3793 | static void |
1533 | once_cb (EV_P_ struct ev_once *once, int revents) |
3794 | once_cb (EV_P_ struct ev_once *once, int revents) |
1534 | { |
3795 | { |
1535 | void (*cb)(int revents, void *arg) = once->cb; |
3796 | void (*cb)(int revents, void *arg) = once->cb; |
1536 | void *arg = once->arg; |
3797 | void *arg = once->arg; |
1537 | |
3798 | |
1538 | ev_io_stop (EV_A_ &once->io); |
3799 | ev_io_stop (EV_A_ &once->io); |
1539 | ev_timer_stop (EV_A_ &once->to); |
3800 | ev_timer_stop (EV_A_ &once->to); |
1540 | ev_free (once); |
3801 | ev_free (once); |
1541 | |
3802 | |
1542 | cb (revents, arg); |
3803 | cb (revents, arg); |
1543 | } |
3804 | } |
1544 | |
3805 | |
1545 | static void |
3806 | static void |
1546 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
3807 | once_cb_io (EV_P_ ev_io *w, int revents) |
1547 | { |
3808 | { |
1548 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3809 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3810 | |
|
|
3811 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1549 | } |
3812 | } |
1550 | |
3813 | |
1551 | static void |
3814 | static void |
1552 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
3815 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1553 | { |
3816 | { |
1554 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3817 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
3818 | |
|
|
3819 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1555 | } |
3820 | } |
1556 | |
3821 | |
1557 | void |
3822 | void |
1558 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3823 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1559 | { |
3824 | { |
1560 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3825 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1561 | |
3826 | |
1562 | if (!once) |
3827 | if (expect_false (!once)) |
|
|
3828 | { |
1563 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3829 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1564 | else |
3830 | return; |
1565 | { |
3831 | } |
|
|
3832 | |
1566 | once->cb = cb; |
3833 | once->cb = cb; |
1567 | once->arg = arg; |
3834 | once->arg = arg; |
1568 | |
3835 | |
1569 | ev_watcher_init (&once->io, once_cb_io); |
3836 | ev_init (&once->io, once_cb_io); |
1570 | if (fd >= 0) |
3837 | if (fd >= 0) |
|
|
3838 | { |
|
|
3839 | ev_io_set (&once->io, fd, events); |
|
|
3840 | ev_io_start (EV_A_ &once->io); |
|
|
3841 | } |
|
|
3842 | |
|
|
3843 | ev_init (&once->to, once_cb_to); |
|
|
3844 | if (timeout >= 0.) |
|
|
3845 | { |
|
|
3846 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3847 | ev_timer_start (EV_A_ &once->to); |
|
|
3848 | } |
|
|
3849 | } |
|
|
3850 | |
|
|
3851 | /*****************************************************************************/ |
|
|
3852 | |
|
|
3853 | #if EV_WALK_ENABLE |
|
|
3854 | void |
|
|
3855 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3856 | { |
|
|
3857 | int i, j; |
|
|
3858 | ev_watcher_list *wl, *wn; |
|
|
3859 | |
|
|
3860 | if (types & (EV_IO | EV_EMBED)) |
|
|
3861 | for (i = 0; i < anfdmax; ++i) |
|
|
3862 | for (wl = anfds [i].head; wl; ) |
1571 | { |
3863 | { |
1572 | ev_io_set (&once->io, fd, events); |
3864 | wn = wl->next; |
1573 | ev_io_start (EV_A_ &once->io); |
3865 | |
|
|
3866 | #if EV_EMBED_ENABLE |
|
|
3867 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3868 | { |
|
|
3869 | if (types & EV_EMBED) |
|
|
3870 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3871 | } |
|
|
3872 | else |
|
|
3873 | #endif |
|
|
3874 | #if EV_USE_INOTIFY |
|
|
3875 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3876 | ; |
|
|
3877 | else |
|
|
3878 | #endif |
|
|
3879 | if ((ev_io *)wl != &pipe_w) |
|
|
3880 | if (types & EV_IO) |
|
|
3881 | cb (EV_A_ EV_IO, wl); |
|
|
3882 | |
|
|
3883 | wl = wn; |
1574 | } |
3884 | } |
1575 | |
3885 | |
1576 | ev_watcher_init (&once->to, once_cb_to); |
3886 | if (types & (EV_TIMER | EV_STAT)) |
1577 | if (timeout >= 0.) |
3887 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3888 | #if EV_STAT_ENABLE |
|
|
3889 | /*TODO: timer is not always active*/ |
|
|
3890 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1578 | { |
3891 | { |
1579 | ev_timer_set (&once->to, timeout, 0.); |
3892 | if (types & EV_STAT) |
1580 | ev_timer_start (EV_A_ &once->to); |
3893 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1581 | } |
3894 | } |
1582 | } |
3895 | else |
1583 | } |
3896 | #endif |
|
|
3897 | if (types & EV_TIMER) |
|
|
3898 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1584 | |
3899 | |
|
|
3900 | #if EV_PERIODIC_ENABLE |
|
|
3901 | if (types & EV_PERIODIC) |
|
|
3902 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3903 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3904 | #endif |
|
|
3905 | |
|
|
3906 | #if EV_IDLE_ENABLE |
|
|
3907 | if (types & EV_IDLE) |
|
|
3908 | for (j = NUMPRI; i--; ) |
|
|
3909 | for (i = idlecnt [j]; i--; ) |
|
|
3910 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3911 | #endif |
|
|
3912 | |
|
|
3913 | #if EV_FORK_ENABLE |
|
|
3914 | if (types & EV_FORK) |
|
|
3915 | for (i = forkcnt; i--; ) |
|
|
3916 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3917 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3918 | #endif |
|
|
3919 | |
|
|
3920 | #if EV_ASYNC_ENABLE |
|
|
3921 | if (types & EV_ASYNC) |
|
|
3922 | for (i = asynccnt; i--; ) |
|
|
3923 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
3924 | #endif |
|
|
3925 | |
|
|
3926 | #if EV_PREPARE_ENABLE |
|
|
3927 | if (types & EV_PREPARE) |
|
|
3928 | for (i = preparecnt; i--; ) |
|
|
3929 | # if EV_EMBED_ENABLE |
|
|
3930 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
3931 | # endif |
|
|
3932 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
3933 | #endif |
|
|
3934 | |
|
|
3935 | #if EV_CHECK_ENABLE |
|
|
3936 | if (types & EV_CHECK) |
|
|
3937 | for (i = checkcnt; i--; ) |
|
|
3938 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
3939 | #endif |
|
|
3940 | |
|
|
3941 | #if EV_SIGNAL_ENABLE |
|
|
3942 | if (types & EV_SIGNAL) |
|
|
3943 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
3944 | for (wl = signals [i].head; wl; ) |
|
|
3945 | { |
|
|
3946 | wn = wl->next; |
|
|
3947 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
3948 | wl = wn; |
|
|
3949 | } |
|
|
3950 | #endif |
|
|
3951 | |
|
|
3952 | #if EV_CHILD_ENABLE |
|
|
3953 | if (types & EV_CHILD) |
|
|
3954 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
3955 | for (wl = childs [i]; wl; ) |
|
|
3956 | { |
|
|
3957 | wn = wl->next; |
|
|
3958 | cb (EV_A_ EV_CHILD, wl); |
|
|
3959 | wl = wn; |
|
|
3960 | } |
|
|
3961 | #endif |
|
|
3962 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
3963 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
3964 | } |
|
|
3965 | #endif |
|
|
3966 | |
|
|
3967 | #if EV_MULTIPLICITY |
|
|
3968 | #include "ev_wrap.h" |
|
|
3969 | #endif |
|
|
3970 | |
|
|
3971 | EV_CPP(}) |
|
|
3972 | |