1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007-2019 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 modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
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 |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
40 | #ifdef __cplusplus |
40 | /* this big block deduces configuration from config.h */ |
41 | extern "C" { |
|
|
42 | #endif |
|
|
43 | |
|
|
44 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
45 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
46 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
47 | # else |
44 | # else |
48 | # include "config.h" |
45 | # include "config.h" |
49 | # endif |
46 | # endif |
50 | |
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 |
|
|
67 | |
51 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
52 | # ifndef EV_USE_MONOTONIC |
69 | # ifndef EV_USE_MONOTONIC |
53 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
54 | # endif |
71 | # endif |
55 | # ifndef EV_USE_REALTIME |
72 | # ifndef EV_USE_REALTIME |
56 | # define EV_USE_REALTIME 1 |
73 | # define EV_USE_REALTIME 0 |
57 | # endif |
74 | # endif |
58 | # else |
75 | # else |
59 | # ifndef EV_USE_MONOTONIC |
76 | # ifndef EV_USE_MONOTONIC |
60 | # define EV_USE_MONOTONIC 0 |
77 | # define EV_USE_MONOTONIC 0 |
61 | # endif |
78 | # endif |
62 | # ifndef EV_USE_REALTIME |
79 | # ifndef EV_USE_REALTIME |
63 | # define EV_USE_REALTIME 0 |
80 | # define EV_USE_REALTIME 0 |
64 | # endif |
81 | # endif |
65 | # endif |
82 | # endif |
66 | |
83 | |
|
|
84 | # if HAVE_NANOSLEEP |
67 | # ifndef EV_USE_NANOSLEEP |
85 | # ifndef EV_USE_NANOSLEEP |
68 | # if HAVE_NANOSLEEP |
|
|
69 | # define EV_USE_NANOSLEEP 1 |
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
87 | # endif |
70 | # else |
88 | # else |
|
|
89 | # undef EV_USE_NANOSLEEP |
71 | # define EV_USE_NANOSLEEP 0 |
90 | # define EV_USE_NANOSLEEP 0 |
|
|
91 | # endif |
|
|
92 | |
|
|
93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
94 | # ifndef EV_USE_SELECT |
|
|
95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
72 | # endif |
96 | # endif |
|
|
97 | # else |
|
|
98 | # undef EV_USE_SELECT |
|
|
99 | # define EV_USE_SELECT 0 |
73 | # endif |
100 | # endif |
74 | |
101 | |
|
|
102 | # if HAVE_POLL && HAVE_POLL_H |
75 | # ifndef EV_USE_SELECT |
103 | # ifndef EV_USE_POLL |
76 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
77 | # define EV_USE_SELECT 1 |
|
|
78 | # else |
|
|
79 | # define EV_USE_SELECT 0 |
|
|
80 | # endif |
105 | # endif |
81 | # endif |
|
|
82 | |
|
|
83 | # ifndef EV_USE_POLL |
|
|
84 | # if HAVE_POLL && HAVE_POLL_H |
|
|
85 | # define EV_USE_POLL 1 |
|
|
86 | # else |
106 | # else |
|
|
107 | # undef EV_USE_POLL |
87 | # define EV_USE_POLL 0 |
108 | # define EV_USE_POLL 0 |
88 | # endif |
|
|
89 | # endif |
109 | # endif |
90 | |
110 | |
91 | # ifndef EV_USE_EPOLL |
|
|
92 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
93 | # define EV_USE_EPOLL 1 |
112 | # ifndef EV_USE_EPOLL |
94 | # else |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
95 | # define EV_USE_EPOLL 0 |
|
|
96 | # endif |
114 | # endif |
|
|
115 | # else |
|
|
116 | # undef EV_USE_EPOLL |
|
|
117 | # define EV_USE_EPOLL 0 |
97 | # endif |
118 | # endif |
98 | |
119 | |
99 | # ifndef EV_USE_KQUEUE |
120 | # if HAVE_LINUX_AIO_ABI_H |
100 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
121 | # ifndef EV_USE_LINUXAIO |
101 | # define EV_USE_KQUEUE 1 |
122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
102 | # else |
|
|
103 | # define EV_USE_KQUEUE 0 |
|
|
104 | # endif |
123 | # endif |
|
|
124 | # else |
|
|
125 | # undef EV_USE_LINUXAIO |
|
|
126 | # define EV_USE_LINUXAIO 0 |
105 | # endif |
127 | # endif |
106 | |
128 | |
107 | # ifndef EV_USE_PORT |
129 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
108 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
130 | # ifndef EV_USE_KQUEUE |
109 | # define EV_USE_PORT 1 |
131 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
110 | # else |
|
|
111 | # define EV_USE_PORT 0 |
|
|
112 | # endif |
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_KQUEUE |
|
|
135 | # define EV_USE_KQUEUE 0 |
113 | # endif |
136 | # endif |
114 | |
137 | |
|
|
138 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
115 | # ifndef EV_USE_INOTIFY |
139 | # ifndef EV_USE_PORT |
116 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
140 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
117 | # define EV_USE_INOTIFY 1 |
|
|
118 | # else |
|
|
119 | # define EV_USE_INOTIFY 0 |
|
|
120 | # endif |
141 | # endif |
|
|
142 | # else |
|
|
143 | # undef EV_USE_PORT |
|
|
144 | # define EV_USE_PORT 0 |
121 | # endif |
145 | # endif |
122 | |
146 | |
|
|
147 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
148 | # ifndef EV_USE_INOTIFY |
|
|
149 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
150 | # endif |
|
|
151 | # else |
|
|
152 | # undef EV_USE_INOTIFY |
|
|
153 | # define EV_USE_INOTIFY 0 |
123 | #endif |
154 | # endif |
124 | |
155 | |
125 | #include <math.h> |
156 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
|
|
157 | # ifndef EV_USE_SIGNALFD |
|
|
158 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
159 | # endif |
|
|
160 | # else |
|
|
161 | # undef EV_USE_SIGNALFD |
|
|
162 | # define EV_USE_SIGNALFD 0 |
|
|
163 | # endif |
|
|
164 | |
|
|
165 | # if HAVE_EVENTFD |
|
|
166 | # ifndef EV_USE_EVENTFD |
|
|
167 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
168 | # endif |
|
|
169 | # else |
|
|
170 | # undef EV_USE_EVENTFD |
|
|
171 | # define EV_USE_EVENTFD 0 |
|
|
172 | # endif |
|
|
173 | |
|
|
174 | #endif |
|
|
175 | |
|
|
176 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
|
177 | * a limit of 1024 into their select. Where people have brains, |
|
|
178 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
|
179 | * ordered to have a vacuum, or they do anything for money. |
|
|
180 | * This might help. Or not. |
|
|
181 | * Note that this must be defined early, as other include files |
|
|
182 | * will rely on this define as well. |
|
|
183 | */ |
|
|
184 | #define _DARWIN_UNLIMITED_SELECT 1 |
|
|
185 | |
126 | #include <stdlib.h> |
186 | #include <stdlib.h> |
|
|
187 | #include <string.h> |
127 | #include <fcntl.h> |
188 | #include <fcntl.h> |
128 | #include <stddef.h> |
189 | #include <stddef.h> |
129 | |
190 | |
130 | #include <stdio.h> |
191 | #include <stdio.h> |
131 | |
192 | |
132 | #include <assert.h> |
193 | #include <assert.h> |
133 | #include <errno.h> |
194 | #include <errno.h> |
134 | #include <sys/types.h> |
195 | #include <sys/types.h> |
135 | #include <time.h> |
196 | #include <time.h> |
|
|
197 | #include <limits.h> |
136 | |
198 | |
137 | #include <signal.h> |
199 | #include <signal.h> |
138 | |
200 | |
139 | #ifdef EV_H |
201 | #ifdef EV_H |
140 | # include EV_H |
202 | # include EV_H |
141 | #else |
203 | #else |
142 | # include "ev.h" |
204 | # include "ev.h" |
|
|
205 | #endif |
|
|
206 | |
|
|
207 | #if EV_NO_THREADS |
|
|
208 | # undef EV_NO_SMP |
|
|
209 | # define EV_NO_SMP 1 |
|
|
210 | # undef ECB_NO_THREADS |
|
|
211 | # define ECB_NO_THREADS 1 |
|
|
212 | #endif |
|
|
213 | #if EV_NO_SMP |
|
|
214 | # undef EV_NO_SMP |
|
|
215 | # define ECB_NO_SMP 1 |
143 | #endif |
216 | #endif |
144 | |
217 | |
145 | #ifndef _WIN32 |
218 | #ifndef _WIN32 |
146 | # include <sys/time.h> |
219 | # include <sys/time.h> |
147 | # include <sys/wait.h> |
220 | # include <sys/wait.h> |
148 | # include <unistd.h> |
221 | # include <unistd.h> |
149 | #else |
222 | #else |
|
|
223 | # include <io.h> |
150 | # define WIN32_LEAN_AND_MEAN |
224 | # define WIN32_LEAN_AND_MEAN |
|
|
225 | # include <winsock2.h> |
151 | # include <windows.h> |
226 | # include <windows.h> |
152 | # ifndef EV_SELECT_IS_WINSOCKET |
227 | # ifndef EV_SELECT_IS_WINSOCKET |
153 | # define EV_SELECT_IS_WINSOCKET 1 |
228 | # define EV_SELECT_IS_WINSOCKET 1 |
154 | # endif |
229 | # endif |
|
|
230 | # undef EV_AVOID_STDIO |
|
|
231 | #endif |
|
|
232 | |
|
|
233 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
|
|
234 | |
|
|
235 | /* try to deduce the maximum number of signals on this platform */ |
|
|
236 | #if defined EV_NSIG |
|
|
237 | /* use what's provided */ |
|
|
238 | #elif defined NSIG |
|
|
239 | # define EV_NSIG (NSIG) |
|
|
240 | #elif defined _NSIG |
|
|
241 | # define EV_NSIG (_NSIG) |
|
|
242 | #elif defined SIGMAX |
|
|
243 | # define EV_NSIG (SIGMAX+1) |
|
|
244 | #elif defined SIG_MAX |
|
|
245 | # define EV_NSIG (SIG_MAX+1) |
|
|
246 | #elif defined _SIG_MAX |
|
|
247 | # define EV_NSIG (_SIG_MAX+1) |
|
|
248 | #elif defined MAXSIG |
|
|
249 | # define EV_NSIG (MAXSIG+1) |
|
|
250 | #elif defined MAX_SIG |
|
|
251 | # define EV_NSIG (MAX_SIG+1) |
|
|
252 | #elif defined SIGARRAYSIZE |
|
|
253 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
|
|
254 | #elif defined _sys_nsig |
|
|
255 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
|
256 | #else |
|
|
257 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
|
|
258 | #endif |
|
|
259 | |
|
|
260 | #ifndef EV_USE_FLOOR |
|
|
261 | # define EV_USE_FLOOR 0 |
|
|
262 | #endif |
|
|
263 | |
|
|
264 | #ifndef EV_USE_CLOCK_SYSCALL |
|
|
265 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
|
|
266 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
|
|
267 | # else |
|
|
268 | # define EV_USE_CLOCK_SYSCALL 0 |
155 | #endif |
269 | # endif |
|
|
270 | #endif |
156 | |
271 | |
157 | /**/ |
272 | #if !(_POSIX_TIMERS > 0) |
|
|
273 | # ifndef EV_USE_MONOTONIC |
|
|
274 | # define EV_USE_MONOTONIC 0 |
|
|
275 | # endif |
|
|
276 | # ifndef EV_USE_REALTIME |
|
|
277 | # define EV_USE_REALTIME 0 |
|
|
278 | # endif |
|
|
279 | #endif |
158 | |
280 | |
159 | #ifndef EV_USE_MONOTONIC |
281 | #ifndef EV_USE_MONOTONIC |
|
|
282 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
|
|
283 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
|
|
284 | # else |
160 | # define EV_USE_MONOTONIC 0 |
285 | # define EV_USE_MONOTONIC 0 |
|
|
286 | # endif |
161 | #endif |
287 | #endif |
162 | |
288 | |
163 | #ifndef EV_USE_REALTIME |
289 | #ifndef EV_USE_REALTIME |
164 | # define EV_USE_REALTIME 0 |
290 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
165 | #endif |
291 | #endif |
166 | |
292 | |
167 | #ifndef EV_USE_NANOSLEEP |
293 | #ifndef EV_USE_NANOSLEEP |
|
|
294 | # if _POSIX_C_SOURCE >= 199309L |
|
|
295 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
296 | # else |
168 | # define EV_USE_NANOSLEEP 0 |
297 | # define EV_USE_NANOSLEEP 0 |
|
|
298 | # endif |
169 | #endif |
299 | #endif |
170 | |
300 | |
171 | #ifndef EV_USE_SELECT |
301 | #ifndef EV_USE_SELECT |
172 | # define EV_USE_SELECT 1 |
302 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
173 | #endif |
303 | #endif |
174 | |
304 | |
175 | #ifndef EV_USE_POLL |
305 | #ifndef EV_USE_POLL |
176 | # ifdef _WIN32 |
306 | # ifdef _WIN32 |
177 | # define EV_USE_POLL 0 |
307 | # define EV_USE_POLL 0 |
178 | # else |
308 | # else |
179 | # define EV_USE_POLL 1 |
309 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
180 | # endif |
310 | # endif |
181 | #endif |
311 | #endif |
182 | |
312 | |
183 | #ifndef EV_USE_EPOLL |
313 | #ifndef EV_USE_EPOLL |
|
|
314 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
315 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
|
|
316 | # else |
184 | # define EV_USE_EPOLL 0 |
317 | # define EV_USE_EPOLL 0 |
|
|
318 | # endif |
185 | #endif |
319 | #endif |
186 | |
320 | |
187 | #ifndef EV_USE_KQUEUE |
321 | #ifndef EV_USE_KQUEUE |
188 | # define EV_USE_KQUEUE 0 |
322 | # define EV_USE_KQUEUE 0 |
189 | #endif |
323 | #endif |
190 | |
324 | |
191 | #ifndef EV_USE_PORT |
325 | #ifndef EV_USE_PORT |
192 | # define EV_USE_PORT 0 |
326 | # define EV_USE_PORT 0 |
193 | #endif |
327 | #endif |
194 | |
328 | |
|
|
329 | #ifndef EV_USE_LINUXAIO |
|
|
330 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
|
|
331 | # define EV_USE_LINUXAIO 1 |
|
|
332 | # else |
|
|
333 | # define EV_USE_LINUXAIO 0 |
|
|
334 | # endif |
|
|
335 | #endif |
|
|
336 | |
195 | #ifndef EV_USE_INOTIFY |
337 | #ifndef EV_USE_INOTIFY |
|
|
338 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
339 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
340 | # else |
196 | # define EV_USE_INOTIFY 0 |
341 | # define EV_USE_INOTIFY 0 |
|
|
342 | # endif |
197 | #endif |
343 | #endif |
198 | |
344 | |
199 | #ifndef EV_PID_HASHSIZE |
345 | #ifndef EV_PID_HASHSIZE |
200 | # if EV_MINIMAL |
346 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
201 | # define EV_PID_HASHSIZE 1 |
347 | #endif |
|
|
348 | |
|
|
349 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
350 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
351 | #endif |
|
|
352 | |
|
|
353 | #ifndef EV_USE_EVENTFD |
|
|
354 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
355 | # define EV_USE_EVENTFD EV_FEATURE_OS |
202 | # else |
356 | # else |
203 | # define EV_PID_HASHSIZE 16 |
357 | # define EV_USE_EVENTFD 0 |
204 | # endif |
358 | # endif |
205 | #endif |
359 | #endif |
206 | |
360 | |
207 | #ifndef EV_INOTIFY_HASHSIZE |
361 | #ifndef EV_USE_SIGNALFD |
208 | # if EV_MINIMAL |
362 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
209 | # define EV_INOTIFY_HASHSIZE 1 |
363 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
210 | # else |
364 | # else |
211 | # define EV_INOTIFY_HASHSIZE 16 |
365 | # define EV_USE_SIGNALFD 0 |
212 | # endif |
366 | # endif |
213 | #endif |
367 | #endif |
214 | |
368 | |
215 | /**/ |
369 | #if 0 /* debugging */ |
|
|
370 | # define EV_VERIFY 3 |
|
|
371 | # define EV_USE_4HEAP 1 |
|
|
372 | # define EV_HEAP_CACHE_AT 1 |
|
|
373 | #endif |
|
|
374 | |
|
|
375 | #ifndef EV_VERIFY |
|
|
376 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
377 | #endif |
|
|
378 | |
|
|
379 | #ifndef EV_USE_4HEAP |
|
|
380 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
381 | #endif |
|
|
382 | |
|
|
383 | #ifndef EV_HEAP_CACHE_AT |
|
|
384 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
385 | #endif |
|
|
386 | |
|
|
387 | #ifdef __ANDROID__ |
|
|
388 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
389 | # undef EV_USE_SELECT |
|
|
390 | # define EV_USE_SELECT 0 |
|
|
391 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
392 | # undef EV_USE_CLOCK_SYSCALL |
|
|
393 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
394 | #endif |
|
|
395 | |
|
|
396 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
397 | #ifdef _AIX |
|
|
398 | /* AIX has a completely broken poll.h header */ |
|
|
399 | # undef EV_USE_POLL |
|
|
400 | # define EV_USE_POLL 0 |
|
|
401 | #endif |
|
|
402 | |
|
|
403 | #if EV_USE_LINUXAIO |
|
|
404 | # include <linux/aio_abi.h> /* probably only needed for aio_context_t */ |
|
|
405 | #endif |
|
|
406 | |
|
|
407 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
408 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
409 | #if EV_USE_CLOCK_SYSCALL |
|
|
410 | # include <sys/syscall.h> |
|
|
411 | # ifdef SYS_clock_gettime |
|
|
412 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
413 | # undef EV_USE_MONOTONIC |
|
|
414 | # define EV_USE_MONOTONIC 1 |
|
|
415 | # else |
|
|
416 | # undef EV_USE_CLOCK_SYSCALL |
|
|
417 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
418 | # endif |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
216 | |
422 | |
217 | #ifndef CLOCK_MONOTONIC |
423 | #ifndef CLOCK_MONOTONIC |
218 | # undef EV_USE_MONOTONIC |
424 | # undef EV_USE_MONOTONIC |
219 | # define EV_USE_MONOTONIC 0 |
425 | # define EV_USE_MONOTONIC 0 |
220 | #endif |
426 | #endif |
… | |
… | |
228 | # undef EV_USE_INOTIFY |
434 | # undef EV_USE_INOTIFY |
229 | # define EV_USE_INOTIFY 0 |
435 | # define EV_USE_INOTIFY 0 |
230 | #endif |
436 | #endif |
231 | |
437 | |
232 | #if !EV_USE_NANOSLEEP |
438 | #if !EV_USE_NANOSLEEP |
233 | # ifndef _WIN32 |
439 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
440 | # if !defined _WIN32 && !defined __hpux |
234 | # include <sys/select.h> |
441 | # include <sys/select.h> |
235 | # endif |
442 | # endif |
236 | #endif |
443 | #endif |
237 | |
444 | |
|
|
445 | #if EV_USE_LINUXAIO |
|
|
446 | # include <sys/syscall.h> |
|
|
447 | # if !SYS_io_getevents |
|
|
448 | # undef EV_USE_LINUXAIO |
|
|
449 | # define EV_USE_LINUXAIO 0 |
|
|
450 | # endif |
|
|
451 | #endif |
|
|
452 | |
238 | #if EV_USE_INOTIFY |
453 | #if EV_USE_INOTIFY |
|
|
454 | # include <sys/statfs.h> |
239 | # include <sys/inotify.h> |
455 | # include <sys/inotify.h> |
|
|
456 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
457 | # ifndef IN_DONT_FOLLOW |
|
|
458 | # undef EV_USE_INOTIFY |
|
|
459 | # define EV_USE_INOTIFY 0 |
240 | #endif |
460 | # endif |
|
|
461 | #endif |
241 | |
462 | |
242 | #if EV_SELECT_IS_WINSOCKET |
463 | #if EV_USE_EVENTFD |
|
|
464 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
243 | # include <winsock.h> |
465 | # include <stdint.h> |
|
|
466 | # ifndef EFD_NONBLOCK |
|
|
467 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
468 | # endif |
|
|
469 | # ifndef EFD_CLOEXEC |
|
|
470 | # ifdef O_CLOEXEC |
|
|
471 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
472 | # else |
|
|
473 | # define EFD_CLOEXEC 02000000 |
|
|
474 | # endif |
|
|
475 | # endif |
|
|
476 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
477 | #endif |
|
|
478 | |
|
|
479 | #if EV_USE_SIGNALFD |
|
|
480 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
481 | # include <stdint.h> |
|
|
482 | # ifndef SFD_NONBLOCK |
|
|
483 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
484 | # endif |
|
|
485 | # ifndef SFD_CLOEXEC |
|
|
486 | # ifdef O_CLOEXEC |
|
|
487 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
488 | # else |
|
|
489 | # define SFD_CLOEXEC 02000000 |
|
|
490 | # endif |
|
|
491 | # endif |
|
|
492 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
493 | |
|
|
494 | struct signalfd_siginfo |
|
|
495 | { |
|
|
496 | uint32_t ssi_signo; |
|
|
497 | char pad[128 - sizeof (uint32_t)]; |
|
|
498 | }; |
244 | #endif |
499 | #endif |
245 | |
500 | |
246 | /**/ |
501 | /**/ |
247 | |
502 | |
|
|
503 | #if EV_VERIFY >= 3 |
|
|
504 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
505 | #else |
|
|
506 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
507 | #endif |
|
|
508 | |
248 | /* |
509 | /* |
249 | * This is used to avoid floating point rounding problems. |
510 | * This is used to work around floating point rounding problems. |
250 | * It is added to ev_rt_now when scheduling periodics |
|
|
251 | * to ensure progress, time-wise, even when rounding |
|
|
252 | * errors are against us. |
|
|
253 | * This value is good at least till the year 4000. |
511 | * This value is good at least till the year 4000. |
254 | * Better solutions welcome. |
|
|
255 | */ |
512 | */ |
256 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
513 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
514 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
257 | |
515 | |
258 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
516 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
259 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
517 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
260 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
261 | |
518 | |
|
|
519 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
520 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
521 | |
|
|
522 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
523 | /* ECB.H BEGIN */ |
|
|
524 | /* |
|
|
525 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
526 | * |
|
|
527 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
528 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
529 | * All rights reserved. |
|
|
530 | * |
|
|
531 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
532 | * tion, are permitted provided that the following conditions are met: |
|
|
533 | * |
|
|
534 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
535 | * this list of conditions and the following disclaimer. |
|
|
536 | * |
|
|
537 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
538 | * notice, this list of conditions and the following disclaimer in the |
|
|
539 | * documentation and/or other materials provided with the distribution. |
|
|
540 | * |
|
|
541 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
542 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
543 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
544 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
545 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
546 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
547 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
548 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
549 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
550 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
551 | * |
|
|
552 | * Alternatively, the contents of this file may be used under the terms of |
|
|
553 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
554 | * in which case the provisions of the GPL are applicable instead of |
|
|
555 | * the above. If you wish to allow the use of your version of this file |
|
|
556 | * only under the terms of the GPL and not to allow others to use your |
|
|
557 | * version of this file under the BSD license, indicate your decision |
|
|
558 | * by deleting the provisions above and replace them with the notice |
|
|
559 | * and other provisions required by the GPL. If you do not delete the |
|
|
560 | * provisions above, a recipient may use your version of this file under |
|
|
561 | * either the BSD or the GPL. |
|
|
562 | */ |
|
|
563 | |
|
|
564 | #ifndef ECB_H |
|
|
565 | #define ECB_H |
|
|
566 | |
|
|
567 | /* 16 bits major, 16 bits minor */ |
|
|
568 | #define ECB_VERSION 0x00010005 |
|
|
569 | |
|
|
570 | #ifdef _WIN32 |
|
|
571 | typedef signed char int8_t; |
|
|
572 | typedef unsigned char uint8_t; |
|
|
573 | typedef signed short int16_t; |
|
|
574 | typedef unsigned short uint16_t; |
|
|
575 | typedef signed int int32_t; |
|
|
576 | typedef unsigned int uint32_t; |
262 | #if __GNUC__ >= 4 |
577 | #if __GNUC__ |
|
|
578 | typedef signed long long int64_t; |
|
|
579 | typedef unsigned long long uint64_t; |
|
|
580 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
581 | typedef signed __int64 int64_t; |
|
|
582 | typedef unsigned __int64 uint64_t; |
|
|
583 | #endif |
|
|
584 | #ifdef _WIN64 |
|
|
585 | #define ECB_PTRSIZE 8 |
|
|
586 | typedef uint64_t uintptr_t; |
|
|
587 | typedef int64_t intptr_t; |
|
|
588 | #else |
|
|
589 | #define ECB_PTRSIZE 4 |
|
|
590 | typedef uint32_t uintptr_t; |
|
|
591 | typedef int32_t intptr_t; |
|
|
592 | #endif |
|
|
593 | #else |
|
|
594 | #include <inttypes.h> |
|
|
595 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
596 | #define ECB_PTRSIZE 8 |
|
|
597 | #else |
|
|
598 | #define ECB_PTRSIZE 4 |
|
|
599 | #endif |
|
|
600 | #endif |
|
|
601 | |
|
|
602 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
603 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
604 | |
|
|
605 | /* work around x32 idiocy by defining proper macros */ |
|
|
606 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
607 | #if _ILP32 |
|
|
608 | #define ECB_AMD64_X32 1 |
|
|
609 | #else |
|
|
610 | #define ECB_AMD64 1 |
|
|
611 | #endif |
|
|
612 | #endif |
|
|
613 | |
|
|
614 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
615 | * what their idiot authors think are the "more important" extensions, |
|
|
616 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
617 | * or so. |
|
|
618 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
619 | * an issue with that they should have done it right in the first place. |
|
|
620 | */ |
|
|
621 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
622 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
623 | #else |
|
|
624 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
625 | #endif |
|
|
626 | |
|
|
627 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
628 | |
|
|
629 | #if __clang__ && defined __has_builtin |
|
|
630 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
631 | #else |
|
|
632 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
633 | #endif |
|
|
634 | |
|
|
635 | #if __clang__ && defined __has_extension |
|
|
636 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
637 | #else |
|
|
638 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
639 | #endif |
|
|
640 | |
|
|
641 | #define ECB_CPP (__cplusplus+0) |
|
|
642 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
643 | #define ECB_CPP14 (__cplusplus >= 201402L) |
|
|
644 | #define ECB_CPP17 (__cplusplus >= 201703L) |
|
|
645 | |
|
|
646 | #if ECB_CPP |
|
|
647 | #define ECB_C 0 |
|
|
648 | #define ECB_STDC_VERSION 0 |
|
|
649 | #else |
|
|
650 | #define ECB_C 1 |
|
|
651 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
652 | #endif |
|
|
653 | |
|
|
654 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
655 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
656 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
|
|
657 | |
|
|
658 | #if ECB_CPP |
|
|
659 | #define ECB_EXTERN_C extern "C" |
|
|
660 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
661 | #define ECB_EXTERN_C_END } |
|
|
662 | #else |
|
|
663 | #define ECB_EXTERN_C extern |
|
|
664 | #define ECB_EXTERN_C_BEG |
|
|
665 | #define ECB_EXTERN_C_END |
|
|
666 | #endif |
|
|
667 | |
|
|
668 | /*****************************************************************************/ |
|
|
669 | |
|
|
670 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
671 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
672 | |
|
|
673 | #if ECB_NO_THREADS |
|
|
674 | #define ECB_NO_SMP 1 |
|
|
675 | #endif |
|
|
676 | |
|
|
677 | #if ECB_NO_SMP |
|
|
678 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
679 | #endif |
|
|
680 | |
|
|
681 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
682 | #if __xlC__ && ECB_CPP |
|
|
683 | #include <builtins.h> |
|
|
684 | #endif |
|
|
685 | |
|
|
686 | #if 1400 <= _MSC_VER |
|
|
687 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
688 | #endif |
|
|
689 | |
|
|
690 | #ifndef ECB_MEMORY_FENCE |
|
|
691 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
692 | #if __i386 || __i386__ |
|
|
693 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
694 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
695 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
696 | #elif ECB_GCC_AMD64 |
|
|
697 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
698 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
699 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
700 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
701 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
702 | #elif defined __ARM_ARCH_2__ \ |
|
|
703 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
|
|
704 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
|
|
705 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
|
|
706 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
|
|
707 | || defined __ARM_ARCH_5TEJ__ |
|
|
708 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
|
|
709 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
710 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
711 | || defined __ARM_ARCH_6T2__ |
|
|
712 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
713 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
714 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
715 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
716 | #elif __aarch64__ |
|
|
717 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
718 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
|
|
719 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
720 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
721 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
722 | #elif defined __s390__ || defined __s390x__ |
|
|
723 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
724 | #elif defined __mips__ |
|
|
725 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
726 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
727 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
728 | #elif defined __alpha__ |
|
|
729 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
730 | #elif defined __hppa__ |
|
|
731 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
732 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
733 | #elif defined __ia64__ |
|
|
734 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
735 | #elif defined __m68k__ |
|
|
736 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
737 | #elif defined __m88k__ |
|
|
738 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
739 | #elif defined __sh__ |
|
|
740 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
741 | #endif |
|
|
742 | #endif |
|
|
743 | #endif |
|
|
744 | |
|
|
745 | #ifndef ECB_MEMORY_FENCE |
|
|
746 | #if ECB_GCC_VERSION(4,7) |
|
|
747 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
748 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
749 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
750 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
751 | |
|
|
752 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
753 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
754 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
755 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
756 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
757 | |
|
|
758 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
759 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
760 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
761 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
762 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
763 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
764 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
765 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
766 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
767 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
768 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
769 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
770 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
771 | #elif defined _WIN32 |
|
|
772 | #include <WinNT.h> |
|
|
773 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
774 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
775 | #include <mbarrier.h> |
|
|
776 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
777 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
778 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
779 | #elif __xlC__ |
|
|
780 | #define ECB_MEMORY_FENCE __sync () |
|
|
781 | #endif |
|
|
782 | #endif |
|
|
783 | |
|
|
784 | #ifndef ECB_MEMORY_FENCE |
|
|
785 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
786 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
787 | /* not just C11 atomics and atomic accesses */ |
|
|
788 | #include <stdatomic.h> |
|
|
789 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
790 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
791 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
792 | /* for most usages, or gcc and clang have a bug */ |
|
|
793 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
794 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
795 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
796 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
797 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
798 | #endif |
|
|
799 | #endif |
|
|
800 | |
|
|
801 | #ifndef ECB_MEMORY_FENCE |
|
|
802 | #if !ECB_AVOID_PTHREADS |
|
|
803 | /* |
|
|
804 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
805 | * or failure to find pthread.h, then you should implement |
|
|
806 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
807 | * OR provide pthread.h and link against the posix thread library |
|
|
808 | * of your system. |
|
|
809 | */ |
|
|
810 | #include <pthread.h> |
|
|
811 | #define ECB_NEEDS_PTHREADS 1 |
|
|
812 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
813 | |
|
|
814 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
815 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
816 | #endif |
|
|
817 | #endif |
|
|
818 | |
|
|
819 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
820 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
821 | #endif |
|
|
822 | |
|
|
823 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
824 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
825 | #endif |
|
|
826 | |
|
|
827 | /*****************************************************************************/ |
|
|
828 | |
|
|
829 | #if ECB_CPP |
|
|
830 | #define ecb_inline static inline |
|
|
831 | #elif ECB_GCC_VERSION(2,5) |
|
|
832 | #define ecb_inline static __inline__ |
|
|
833 | #elif ECB_C99 |
|
|
834 | #define ecb_inline static inline |
|
|
835 | #else |
|
|
836 | #define ecb_inline static |
|
|
837 | #endif |
|
|
838 | |
|
|
839 | #if ECB_GCC_VERSION(3,3) |
|
|
840 | #define ecb_restrict __restrict__ |
|
|
841 | #elif ECB_C99 |
|
|
842 | #define ecb_restrict restrict |
|
|
843 | #else |
|
|
844 | #define ecb_restrict |
|
|
845 | #endif |
|
|
846 | |
|
|
847 | typedef int ecb_bool; |
|
|
848 | |
|
|
849 | #define ECB_CONCAT_(a, b) a ## b |
|
|
850 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
851 | #define ECB_STRINGIFY_(a) # a |
|
|
852 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
853 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
|
|
854 | |
|
|
855 | #define ecb_function_ ecb_inline |
|
|
856 | |
|
|
857 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
858 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
859 | #else |
|
|
860 | #define ecb_attribute(attrlist) |
|
|
861 | #endif |
|
|
862 | |
|
|
863 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
864 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
865 | #else |
|
|
866 | /* possible C11 impl for integral types |
|
|
867 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
868 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
869 | |
|
|
870 | #define ecb_is_constant(expr) 0 |
|
|
871 | #endif |
|
|
872 | |
|
|
873 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
263 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
874 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
264 | # define noinline __attribute__ ((noinline)) |
|
|
265 | #else |
875 | #else |
266 | # define expect(expr,value) (expr) |
876 | #define ecb_expect(expr,value) (expr) |
267 | # define noinline |
|
|
268 | # if __STDC_VERSION__ < 199901L |
|
|
269 | # define inline |
|
|
270 | # endif |
877 | #endif |
271 | #endif |
|
|
272 | |
878 | |
|
|
879 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
880 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
881 | #else |
|
|
882 | #define ecb_prefetch(addr,rw,locality) |
|
|
883 | #endif |
|
|
884 | |
|
|
885 | /* no emulation for ecb_decltype */ |
|
|
886 | #if ECB_CPP11 |
|
|
887 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
888 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
889 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
890 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
891 | #define ecb_decltype(x) __typeof__ (x) |
|
|
892 | #endif |
|
|
893 | |
|
|
894 | #if _MSC_VER >= 1300 |
|
|
895 | #define ecb_deprecated __declspec (deprecated) |
|
|
896 | #else |
|
|
897 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
898 | #endif |
|
|
899 | |
|
|
900 | #if _MSC_VER >= 1500 |
|
|
901 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
902 | #elif ECB_GCC_VERSION(4,5) |
|
|
903 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
904 | #else |
|
|
905 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
906 | #endif |
|
|
907 | |
|
|
908 | #if _MSC_VER >= 1400 |
|
|
909 | #define ecb_noinline __declspec (noinline) |
|
|
910 | #else |
|
|
911 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
912 | #endif |
|
|
913 | |
|
|
914 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
915 | #define ecb_const ecb_attribute ((__const__)) |
|
|
916 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
917 | |
|
|
918 | #if ECB_C11 || __IBMC_NORETURN |
|
|
919 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
920 | #define ecb_noreturn _Noreturn |
|
|
921 | #elif ECB_CPP11 |
|
|
922 | #define ecb_noreturn [[noreturn]] |
|
|
923 | #elif _MSC_VER >= 1200 |
|
|
924 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
925 | #define ecb_noreturn __declspec (noreturn) |
|
|
926 | #else |
|
|
927 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
928 | #endif |
|
|
929 | |
|
|
930 | #if ECB_GCC_VERSION(4,3) |
|
|
931 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
932 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
933 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
934 | #else |
|
|
935 | #define ecb_artificial |
|
|
936 | #define ecb_hot |
|
|
937 | #define ecb_cold |
|
|
938 | #endif |
|
|
939 | |
|
|
940 | /* put around conditional expressions if you are very sure that the */ |
|
|
941 | /* expression is mostly true or mostly false. note that these return */ |
|
|
942 | /* booleans, not the expression. */ |
273 | #define expect_false(expr) expect ((expr) != 0, 0) |
943 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
274 | #define expect_true(expr) expect ((expr) != 0, 1) |
944 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
945 | /* for compatibility to the rest of the world */ |
|
|
946 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
947 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
948 | |
|
|
949 | /* count trailing zero bits and count # of one bits */ |
|
|
950 | #if ECB_GCC_VERSION(3,4) \ |
|
|
951 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
952 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
953 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
954 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
955 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
956 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
957 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
958 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
959 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
960 | /* no popcountll */ |
|
|
961 | #else |
|
|
962 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
963 | ecb_function_ ecb_const int |
|
|
964 | ecb_ctz32 (uint32_t x) |
|
|
965 | { |
|
|
966 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
967 | unsigned long r; |
|
|
968 | _BitScanForward (&r, x); |
|
|
969 | return (int)r; |
|
|
970 | #else |
|
|
971 | int r = 0; |
|
|
972 | |
|
|
973 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
974 | |
|
|
975 | #if ECB_branchless_on_i386 |
|
|
976 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
977 | r += !!(x & 0xcccccccc) << 1; |
|
|
978 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
979 | r += !!(x & 0xff00ff00) << 3; |
|
|
980 | r += !!(x & 0xffff0000) << 4; |
|
|
981 | #else |
|
|
982 | if (x & 0xaaaaaaaa) r += 1; |
|
|
983 | if (x & 0xcccccccc) r += 2; |
|
|
984 | if (x & 0xf0f0f0f0) r += 4; |
|
|
985 | if (x & 0xff00ff00) r += 8; |
|
|
986 | if (x & 0xffff0000) r += 16; |
|
|
987 | #endif |
|
|
988 | |
|
|
989 | return r; |
|
|
990 | #endif |
|
|
991 | } |
|
|
992 | |
|
|
993 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
994 | ecb_function_ ecb_const int |
|
|
995 | ecb_ctz64 (uint64_t x) |
|
|
996 | { |
|
|
997 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
998 | unsigned long r; |
|
|
999 | _BitScanForward64 (&r, x); |
|
|
1000 | return (int)r; |
|
|
1001 | #else |
|
|
1002 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
1003 | return ecb_ctz32 (x >> shift) + shift; |
|
|
1004 | #endif |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
1008 | ecb_function_ ecb_const int |
|
|
1009 | ecb_popcount32 (uint32_t x) |
|
|
1010 | { |
|
|
1011 | x -= (x >> 1) & 0x55555555; |
|
|
1012 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
1013 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
1014 | x *= 0x01010101; |
|
|
1015 | |
|
|
1016 | return x >> 24; |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
1020 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
1021 | { |
|
|
1022 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1023 | unsigned long r; |
|
|
1024 | _BitScanReverse (&r, x); |
|
|
1025 | return (int)r; |
|
|
1026 | #else |
|
|
1027 | int r = 0; |
|
|
1028 | |
|
|
1029 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
1030 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
1031 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
1032 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
1033 | if (x >> 1) { r += 1; } |
|
|
1034 | |
|
|
1035 | return r; |
|
|
1036 | #endif |
|
|
1037 | } |
|
|
1038 | |
|
|
1039 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1040 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1041 | { |
|
|
1042 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1043 | unsigned long r; |
|
|
1044 | _BitScanReverse64 (&r, x); |
|
|
1045 | return (int)r; |
|
|
1046 | #else |
|
|
1047 | int r = 0; |
|
|
1048 | |
|
|
1049 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1050 | |
|
|
1051 | return r + ecb_ld32 (x); |
|
|
1052 | #endif |
|
|
1053 | } |
|
|
1054 | #endif |
|
|
1055 | |
|
|
1056 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1057 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1058 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1059 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1060 | |
|
|
1061 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1062 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1063 | { |
|
|
1064 | return ( (x * 0x0802U & 0x22110U) |
|
|
1065 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1069 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1070 | { |
|
|
1071 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1072 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1073 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1074 | x = ( x >> 8 ) | ( x << 8); |
|
|
1075 | |
|
|
1076 | return x; |
|
|
1077 | } |
|
|
1078 | |
|
|
1079 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1080 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1081 | { |
|
|
1082 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1083 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1084 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1085 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1086 | x = ( x >> 16 ) | ( x << 16); |
|
|
1087 | |
|
|
1088 | return x; |
|
|
1089 | } |
|
|
1090 | |
|
|
1091 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1092 | /* so for this version we are lazy */ |
|
|
1093 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1094 | ecb_function_ ecb_const int |
|
|
1095 | ecb_popcount64 (uint64_t x) |
|
|
1096 | { |
|
|
1097 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1098 | } |
|
|
1099 | |
|
|
1100 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1101 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1102 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1103 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1104 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1105 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1106 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1107 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1108 | |
|
|
1109 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1110 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1111 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1112 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1113 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1114 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1115 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1116 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1117 | |
|
|
1118 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1119 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1120 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1121 | #else |
|
|
1122 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1123 | #endif |
|
|
1124 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1125 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1126 | #elif _MSC_VER |
|
|
1127 | #include <stdlib.h> |
|
|
1128 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1129 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1130 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1131 | #else |
|
|
1132 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1133 | ecb_function_ ecb_const uint16_t |
|
|
1134 | ecb_bswap16 (uint16_t x) |
|
|
1135 | { |
|
|
1136 | return ecb_rotl16 (x, 8); |
|
|
1137 | } |
|
|
1138 | |
|
|
1139 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1140 | ecb_function_ ecb_const uint32_t |
|
|
1141 | ecb_bswap32 (uint32_t x) |
|
|
1142 | { |
|
|
1143 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1144 | } |
|
|
1145 | |
|
|
1146 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1147 | ecb_function_ ecb_const uint64_t |
|
|
1148 | ecb_bswap64 (uint64_t x) |
|
|
1149 | { |
|
|
1150 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1151 | } |
|
|
1152 | #endif |
|
|
1153 | |
|
|
1154 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1155 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1156 | #else |
|
|
1157 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1158 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1159 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1160 | #endif |
|
|
1161 | |
|
|
1162 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1163 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1164 | |
|
|
1165 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1166 | ecb_inline ecb_const uint32_t |
|
|
1167 | ecb_byteorder_helper (void) |
|
|
1168 | { |
|
|
1169 | /* the union code still generates code under pressure in gcc, */ |
|
|
1170 | /* but less than using pointers, and always seems to */ |
|
|
1171 | /* successfully return a constant. */ |
|
|
1172 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1173 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1174 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1175 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1176 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1177 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1178 | return 0x44332211; |
|
|
1179 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1180 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1181 | #define ECB_BIG_ENDIAN 1 |
|
|
1182 | return 0x11223344; |
|
|
1183 | #else |
|
|
1184 | union |
|
|
1185 | { |
|
|
1186 | uint8_t c[4]; |
|
|
1187 | uint32_t u; |
|
|
1188 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1189 | return u.u; |
|
|
1190 | #endif |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1194 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1195 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1196 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1197 | |
|
|
1198 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1199 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1200 | #else |
|
|
1201 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1202 | #endif |
|
|
1203 | |
|
|
1204 | #if ECB_CPP |
|
|
1205 | template<typename T> |
|
|
1206 | static inline T ecb_div_rd (T val, T div) |
|
|
1207 | { |
|
|
1208 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1209 | } |
|
|
1210 | template<typename T> |
|
|
1211 | static inline T ecb_div_ru (T val, T div) |
|
|
1212 | { |
|
|
1213 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1214 | } |
|
|
1215 | #else |
|
|
1216 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1217 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1218 | #endif |
|
|
1219 | |
|
|
1220 | #if ecb_cplusplus_does_not_suck |
|
|
1221 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1222 | template<typename T, int N> |
|
|
1223 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1224 | { |
|
|
1225 | return N; |
|
|
1226 | } |
|
|
1227 | #else |
|
|
1228 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1229 | #endif |
|
|
1230 | |
|
|
1231 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1232 | ecb_function_ ecb_const uint32_t |
|
|
1233 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1234 | { |
|
|
1235 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1236 | int e = (x >> 10) & 0x001f; |
|
|
1237 | unsigned int m = x & 0x03ff; |
|
|
1238 | |
|
|
1239 | if (ecb_expect_false (e == 31)) |
|
|
1240 | /* infinity or NaN */ |
|
|
1241 | e = 255 - (127 - 15); |
|
|
1242 | else if (ecb_expect_false (!e)) |
|
|
1243 | { |
|
|
1244 | if (ecb_expect_true (!m)) |
|
|
1245 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1246 | e = 0 - (127 - 15); |
|
|
1247 | else |
|
|
1248 | { |
|
|
1249 | /* subnormal, renormalise */ |
|
|
1250 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1251 | |
|
|
1252 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1253 | e -= s - 1; |
|
|
1254 | } |
|
|
1255 | } |
|
|
1256 | |
|
|
1257 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1258 | e += 127 - 15; |
|
|
1259 | |
|
|
1260 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1264 | ecb_function_ ecb_const uint16_t |
|
|
1265 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1266 | { |
|
|
1267 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1268 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1269 | unsigned int m = x & 0x007fffff; |
|
|
1270 | |
|
|
1271 | x &= 0x7fffffff; |
|
|
1272 | |
|
|
1273 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1274 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1275 | { |
|
|
1276 | /* mantissa round-to-even */ |
|
|
1277 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1278 | |
|
|
1279 | /* handle overflow */ |
|
|
1280 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1281 | { |
|
|
1282 | m >>= 1; |
|
|
1283 | e += 1; |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | /* handle large numbers and infinity */ |
|
|
1290 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1291 | return s | 0x7c00; |
|
|
1292 | |
|
|
1293 | /* handle zero, subnormals and small numbers */ |
|
|
1294 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1295 | { |
|
|
1296 | /* zero */ |
|
|
1297 | if (ecb_expect_true (!x)) |
|
|
1298 | return s; |
|
|
1299 | |
|
|
1300 | /* handle subnormals */ |
|
|
1301 | |
|
|
1302 | /* too small, will be zero */ |
|
|
1303 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1304 | return s; |
|
|
1305 | |
|
|
1306 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1307 | |
|
|
1308 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1309 | { |
|
|
1310 | unsigned int bits = 14 - e; |
|
|
1311 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1312 | unsigned int even = (m >> bits) & 1; |
|
|
1313 | |
|
|
1314 | /* if this overflows, we will end up with a normalised number */ |
|
|
1315 | m = (m + half + even) >> bits; |
|
|
1316 | } |
|
|
1317 | |
|
|
1318 | return s | m; |
|
|
1319 | } |
|
|
1320 | |
|
|
1321 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1322 | m >>= 13; |
|
|
1323 | |
|
|
1324 | return s | 0x7c00 | m | !m; |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | /*******************************************************************************/ |
|
|
1328 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1329 | |
|
|
1330 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1331 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1332 | #if 0 \ |
|
|
1333 | || __i386 || __i386__ \ |
|
|
1334 | || ECB_GCC_AMD64 \ |
|
|
1335 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1336 | || defined __s390__ || defined __s390x__ \ |
|
|
1337 | || defined __mips__ \ |
|
|
1338 | || defined __alpha__ \ |
|
|
1339 | || defined __hppa__ \ |
|
|
1340 | || defined __ia64__ \ |
|
|
1341 | || defined __m68k__ \ |
|
|
1342 | || defined __m88k__ \ |
|
|
1343 | || defined __sh__ \ |
|
|
1344 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1345 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1346 | || defined __aarch64__ |
|
|
1347 | #define ECB_STDFP 1 |
|
|
1348 | #include <string.h> /* for memcpy */ |
|
|
1349 | #else |
|
|
1350 | #define ECB_STDFP 0 |
|
|
1351 | #endif |
|
|
1352 | |
|
|
1353 | #ifndef ECB_NO_LIBM |
|
|
1354 | |
|
|
1355 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1356 | |
|
|
1357 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1358 | #ifdef INFINITY |
|
|
1359 | #define ECB_INFINITY INFINITY |
|
|
1360 | #else |
|
|
1361 | #define ECB_INFINITY HUGE_VAL |
|
|
1362 | #endif |
|
|
1363 | |
|
|
1364 | #ifdef NAN |
|
|
1365 | #define ECB_NAN NAN |
|
|
1366 | #else |
|
|
1367 | #define ECB_NAN ECB_INFINITY |
|
|
1368 | #endif |
|
|
1369 | |
|
|
1370 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1371 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1372 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1373 | #else |
|
|
1374 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1375 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1376 | #endif |
|
|
1377 | |
|
|
1378 | /* convert a float to ieee single/binary32 */ |
|
|
1379 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1380 | ecb_function_ ecb_const uint32_t |
|
|
1381 | ecb_float_to_binary32 (float x) |
|
|
1382 | { |
|
|
1383 | uint32_t r; |
|
|
1384 | |
|
|
1385 | #if ECB_STDFP |
|
|
1386 | memcpy (&r, &x, 4); |
|
|
1387 | #else |
|
|
1388 | /* slow emulation, works for anything but -0 */ |
|
|
1389 | uint32_t m; |
|
|
1390 | int e; |
|
|
1391 | |
|
|
1392 | if (x == 0e0f ) return 0x00000000U; |
|
|
1393 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1394 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1395 | if (x != x ) return 0x7fbfffffU; |
|
|
1396 | |
|
|
1397 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1398 | |
|
|
1399 | r = m & 0x80000000U; |
|
|
1400 | |
|
|
1401 | if (r) |
|
|
1402 | m = -m; |
|
|
1403 | |
|
|
1404 | if (e <= -126) |
|
|
1405 | { |
|
|
1406 | m &= 0xffffffU; |
|
|
1407 | m >>= (-125 - e); |
|
|
1408 | e = -126; |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | r |= (e + 126) << 23; |
|
|
1412 | r |= m & 0x7fffffU; |
|
|
1413 | #endif |
|
|
1414 | |
|
|
1415 | return r; |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | /* converts an ieee single/binary32 to a float */ |
|
|
1419 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1420 | ecb_function_ ecb_const float |
|
|
1421 | ecb_binary32_to_float (uint32_t x) |
|
|
1422 | { |
|
|
1423 | float r; |
|
|
1424 | |
|
|
1425 | #if ECB_STDFP |
|
|
1426 | memcpy (&r, &x, 4); |
|
|
1427 | #else |
|
|
1428 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1429 | int neg = x >> 31; |
|
|
1430 | int e = (x >> 23) & 0xffU; |
|
|
1431 | |
|
|
1432 | x &= 0x7fffffU; |
|
|
1433 | |
|
|
1434 | if (e) |
|
|
1435 | x |= 0x800000U; |
|
|
1436 | else |
|
|
1437 | e = 1; |
|
|
1438 | |
|
|
1439 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1440 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1441 | |
|
|
1442 | r = neg ? -r : r; |
|
|
1443 | #endif |
|
|
1444 | |
|
|
1445 | return r; |
|
|
1446 | } |
|
|
1447 | |
|
|
1448 | /* convert a double to ieee double/binary64 */ |
|
|
1449 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1450 | ecb_function_ ecb_const uint64_t |
|
|
1451 | ecb_double_to_binary64 (double x) |
|
|
1452 | { |
|
|
1453 | uint64_t r; |
|
|
1454 | |
|
|
1455 | #if ECB_STDFP |
|
|
1456 | memcpy (&r, &x, 8); |
|
|
1457 | #else |
|
|
1458 | /* slow emulation, works for anything but -0 */ |
|
|
1459 | uint64_t m; |
|
|
1460 | int e; |
|
|
1461 | |
|
|
1462 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1463 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1464 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1465 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1466 | |
|
|
1467 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1468 | |
|
|
1469 | r = m & 0x8000000000000000;; |
|
|
1470 | |
|
|
1471 | if (r) |
|
|
1472 | m = -m; |
|
|
1473 | |
|
|
1474 | if (e <= -1022) |
|
|
1475 | { |
|
|
1476 | m &= 0x1fffffffffffffU; |
|
|
1477 | m >>= (-1021 - e); |
|
|
1478 | e = -1022; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1482 | r |= m & 0xfffffffffffffU; |
|
|
1483 | #endif |
|
|
1484 | |
|
|
1485 | return r; |
|
|
1486 | } |
|
|
1487 | |
|
|
1488 | /* converts an ieee double/binary64 to a double */ |
|
|
1489 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1490 | ecb_function_ ecb_const double |
|
|
1491 | ecb_binary64_to_double (uint64_t x) |
|
|
1492 | { |
|
|
1493 | double r; |
|
|
1494 | |
|
|
1495 | #if ECB_STDFP |
|
|
1496 | memcpy (&r, &x, 8); |
|
|
1497 | #else |
|
|
1498 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1499 | int neg = x >> 63; |
|
|
1500 | int e = (x >> 52) & 0x7ffU; |
|
|
1501 | |
|
|
1502 | x &= 0xfffffffffffffU; |
|
|
1503 | |
|
|
1504 | if (e) |
|
|
1505 | x |= 0x10000000000000U; |
|
|
1506 | else |
|
|
1507 | e = 1; |
|
|
1508 | |
|
|
1509 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1510 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1511 | |
|
|
1512 | r = neg ? -r : r; |
|
|
1513 | #endif |
|
|
1514 | |
|
|
1515 | return r; |
|
|
1516 | } |
|
|
1517 | |
|
|
1518 | /* convert a float to ieee half/binary16 */ |
|
|
1519 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1520 | ecb_function_ ecb_const uint16_t |
|
|
1521 | ecb_float_to_binary16 (float x) |
|
|
1522 | { |
|
|
1523 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1524 | } |
|
|
1525 | |
|
|
1526 | /* convert an ieee half/binary16 to float */ |
|
|
1527 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1528 | ecb_function_ ecb_const float |
|
|
1529 | ecb_binary16_to_float (uint16_t x) |
|
|
1530 | { |
|
|
1531 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | #endif |
|
|
1535 | |
|
|
1536 | #endif |
|
|
1537 | |
|
|
1538 | /* ECB.H END */ |
|
|
1539 | |
|
|
1540 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1541 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1542 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1543 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1544 | * libev, in which cases the memory fences become nops. |
|
|
1545 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1546 | * which will then provide the memory fences. |
|
|
1547 | */ |
|
|
1548 | # error "memory fences not defined for your architecture, please report" |
|
|
1549 | #endif |
|
|
1550 | |
|
|
1551 | #ifndef ECB_MEMORY_FENCE |
|
|
1552 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1553 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1554 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1555 | #endif |
|
|
1556 | |
|
|
1557 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1558 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1559 | #define noinline ecb_noinline |
|
|
1560 | |
275 | #define inline_size static inline |
1561 | #define inline_size ecb_inline |
276 | |
1562 | |
277 | #if EV_MINIMAL |
1563 | #if EV_FEATURE_CODE |
278 | # define inline_speed static noinline |
|
|
279 | #else |
|
|
280 | # define inline_speed static inline |
1564 | # define inline_speed ecb_inline |
|
|
1565 | #else |
|
|
1566 | # define inline_speed noinline static |
281 | #endif |
1567 | #endif |
282 | |
1568 | |
283 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
1569 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1570 | |
|
|
1571 | #if EV_MINPRI == EV_MAXPRI |
|
|
1572 | # define ABSPRI(w) (((W)w), 0) |
|
|
1573 | #else |
284 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
1574 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1575 | #endif |
285 | |
1576 | |
286 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
1577 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
287 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
288 | |
1578 | |
289 | typedef ev_watcher *W; |
1579 | typedef ev_watcher *W; |
290 | typedef ev_watcher_list *WL; |
1580 | typedef ev_watcher_list *WL; |
291 | typedef ev_watcher_time *WT; |
1581 | typedef ev_watcher_time *WT; |
292 | |
1582 | |
|
|
1583 | #define ev_active(w) ((W)(w))->active |
|
|
1584 | #define ev_at(w) ((WT)(w))->at |
|
|
1585 | |
|
|
1586 | #if EV_USE_REALTIME |
|
|
1587 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1588 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1589 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1590 | #endif |
|
|
1591 | |
293 | #if EV_USE_MONOTONIC |
1592 | #if EV_USE_MONOTONIC |
294 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
295 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
296 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
1593 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1594 | #endif |
|
|
1595 | |
|
|
1596 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1597 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1598 | #endif |
|
|
1599 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1600 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1601 | #endif |
|
|
1602 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1603 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
297 | #endif |
1604 | #endif |
298 | |
1605 | |
299 | #ifdef _WIN32 |
1606 | #ifdef _WIN32 |
300 | # include "ev_win32.c" |
1607 | # include "ev_win32.c" |
301 | #endif |
1608 | #endif |
302 | |
1609 | |
303 | /*****************************************************************************/ |
1610 | /*****************************************************************************/ |
304 | |
1611 | |
|
|
1612 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1613 | |
|
|
1614 | #if EV_USE_FLOOR |
|
|
1615 | # include <math.h> |
|
|
1616 | # define ev_floor(v) floor (v) |
|
|
1617 | #else |
|
|
1618 | |
|
|
1619 | #include <float.h> |
|
|
1620 | |
|
|
1621 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1622 | noinline |
|
|
1623 | static ev_tstamp |
|
|
1624 | ev_floor (ev_tstamp v) |
|
|
1625 | { |
|
|
1626 | /* the choice of shift factor is not terribly important */ |
|
|
1627 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1628 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1629 | #else |
|
|
1630 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1631 | #endif |
|
|
1632 | |
|
|
1633 | /* argument too large for an unsigned long? */ |
|
|
1634 | if (expect_false (v >= shift)) |
|
|
1635 | { |
|
|
1636 | ev_tstamp f; |
|
|
1637 | |
|
|
1638 | if (v == v - 1.) |
|
|
1639 | return v; /* very large number */ |
|
|
1640 | |
|
|
1641 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1642 | return f + ev_floor (v - f); |
|
|
1643 | } |
|
|
1644 | |
|
|
1645 | /* special treatment for negative args? */ |
|
|
1646 | if (expect_false (v < 0.)) |
|
|
1647 | { |
|
|
1648 | ev_tstamp f = -ev_floor (-v); |
|
|
1649 | |
|
|
1650 | return f - (f == v ? 0 : 1); |
|
|
1651 | } |
|
|
1652 | |
|
|
1653 | /* fits into an unsigned long */ |
|
|
1654 | return (unsigned long)v; |
|
|
1655 | } |
|
|
1656 | |
|
|
1657 | #endif |
|
|
1658 | |
|
|
1659 | /*****************************************************************************/ |
|
|
1660 | |
|
|
1661 | #ifdef __linux |
|
|
1662 | # include <sys/utsname.h> |
|
|
1663 | #endif |
|
|
1664 | |
|
|
1665 | noinline ecb_cold |
|
|
1666 | static unsigned int |
|
|
1667 | ev_linux_version (void) |
|
|
1668 | { |
|
|
1669 | #ifdef __linux |
|
|
1670 | unsigned int v = 0; |
|
|
1671 | struct utsname buf; |
|
|
1672 | int i; |
|
|
1673 | char *p = buf.release; |
|
|
1674 | |
|
|
1675 | if (uname (&buf)) |
|
|
1676 | return 0; |
|
|
1677 | |
|
|
1678 | for (i = 3+1; --i; ) |
|
|
1679 | { |
|
|
1680 | unsigned int c = 0; |
|
|
1681 | |
|
|
1682 | for (;;) |
|
|
1683 | { |
|
|
1684 | if (*p >= '0' && *p <= '9') |
|
|
1685 | c = c * 10 + *p++ - '0'; |
|
|
1686 | else |
|
|
1687 | { |
|
|
1688 | p += *p == '.'; |
|
|
1689 | break; |
|
|
1690 | } |
|
|
1691 | } |
|
|
1692 | |
|
|
1693 | v = (v << 8) | c; |
|
|
1694 | } |
|
|
1695 | |
|
|
1696 | return v; |
|
|
1697 | #else |
|
|
1698 | return 0; |
|
|
1699 | #endif |
|
|
1700 | } |
|
|
1701 | |
|
|
1702 | /*****************************************************************************/ |
|
|
1703 | |
|
|
1704 | #if EV_AVOID_STDIO |
|
|
1705 | noinline ecb_cold |
|
|
1706 | static void |
|
|
1707 | ev_printerr (const char *msg) |
|
|
1708 | { |
|
|
1709 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1710 | } |
|
|
1711 | #endif |
|
|
1712 | |
305 | static void (*syserr_cb)(const char *msg); |
1713 | static void (*syserr_cb)(const char *msg) EV_NOEXCEPT; |
306 | |
1714 | |
|
|
1715 | ecb_cold |
307 | void |
1716 | void |
308 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1717 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT |
309 | { |
1718 | { |
310 | syserr_cb = cb; |
1719 | syserr_cb = cb; |
311 | } |
1720 | } |
312 | |
1721 | |
313 | static void noinline |
1722 | noinline ecb_cold |
|
|
1723 | static void |
314 | syserr (const char *msg) |
1724 | ev_syserr (const char *msg) |
315 | { |
1725 | { |
316 | if (!msg) |
1726 | if (!msg) |
317 | msg = "(libev) system error"; |
1727 | msg = "(libev) system error"; |
318 | |
1728 | |
319 | if (syserr_cb) |
1729 | if (syserr_cb) |
320 | syserr_cb (msg); |
1730 | syserr_cb (msg); |
321 | else |
1731 | else |
322 | { |
1732 | { |
|
|
1733 | #if EV_AVOID_STDIO |
|
|
1734 | ev_printerr (msg); |
|
|
1735 | ev_printerr (": "); |
|
|
1736 | ev_printerr (strerror (errno)); |
|
|
1737 | ev_printerr ("\n"); |
|
|
1738 | #else |
323 | perror (msg); |
1739 | perror (msg); |
|
|
1740 | #endif |
324 | abort (); |
1741 | abort (); |
325 | } |
1742 | } |
326 | } |
1743 | } |
327 | |
1744 | |
328 | static void *(*alloc)(void *ptr, long size); |
1745 | static void * |
|
|
1746 | ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT |
|
|
1747 | { |
|
|
1748 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1749 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1750 | * the single unix specification, so work around them here. |
|
|
1751 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1752 | * despite documenting it otherwise. |
|
|
1753 | */ |
329 | |
1754 | |
|
|
1755 | if (size) |
|
|
1756 | return realloc (ptr, size); |
|
|
1757 | |
|
|
1758 | free (ptr); |
|
|
1759 | return 0; |
|
|
1760 | } |
|
|
1761 | |
|
|
1762 | static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul; |
|
|
1763 | |
|
|
1764 | ecb_cold |
330 | void |
1765 | void |
331 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1766 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT |
332 | { |
1767 | { |
333 | alloc = cb; |
1768 | alloc = cb; |
334 | } |
1769 | } |
335 | |
1770 | |
336 | inline_speed void * |
1771 | inline_speed void * |
337 | ev_realloc (void *ptr, long size) |
1772 | ev_realloc (void *ptr, long size) |
338 | { |
1773 | { |
339 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
1774 | ptr = alloc (ptr, size); |
340 | |
1775 | |
341 | if (!ptr && size) |
1776 | if (!ptr && size) |
342 | { |
1777 | { |
|
|
1778 | #if EV_AVOID_STDIO |
|
|
1779 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1780 | #else |
343 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1781 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1782 | #endif |
344 | abort (); |
1783 | abort (); |
345 | } |
1784 | } |
346 | |
1785 | |
347 | return ptr; |
1786 | return ptr; |
348 | } |
1787 | } |
… | |
… | |
350 | #define ev_malloc(size) ev_realloc (0, (size)) |
1789 | #define ev_malloc(size) ev_realloc (0, (size)) |
351 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
1790 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
352 | |
1791 | |
353 | /*****************************************************************************/ |
1792 | /*****************************************************************************/ |
354 | |
1793 | |
|
|
1794 | /* set in reify when reification needed */ |
|
|
1795 | #define EV_ANFD_REIFY 1 |
|
|
1796 | |
|
|
1797 | /* file descriptor info structure */ |
355 | typedef struct |
1798 | typedef struct |
356 | { |
1799 | { |
357 | WL head; |
1800 | WL head; |
358 | unsigned char events; |
1801 | unsigned char events; /* the events watched for */ |
|
|
1802 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1803 | unsigned char emask; /* some backends store the actual kernel mask in here */ |
359 | unsigned char reify; |
1804 | unsigned char unused; |
|
|
1805 | #if EV_USE_EPOLL |
|
|
1806 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1807 | #endif |
360 | #if EV_SELECT_IS_WINSOCKET |
1808 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
361 | SOCKET handle; |
1809 | SOCKET handle; |
362 | #endif |
1810 | #endif |
|
|
1811 | #if EV_USE_IOCP |
|
|
1812 | OVERLAPPED or, ow; |
|
|
1813 | #endif |
363 | } ANFD; |
1814 | } ANFD; |
364 | |
1815 | |
|
|
1816 | /* stores the pending event set for a given watcher */ |
365 | typedef struct |
1817 | typedef struct |
366 | { |
1818 | { |
367 | W w; |
1819 | W w; |
368 | int events; |
1820 | int events; /* the pending event set for the given watcher */ |
369 | } ANPENDING; |
1821 | } ANPENDING; |
370 | |
1822 | |
371 | #if EV_USE_INOTIFY |
1823 | #if EV_USE_INOTIFY |
|
|
1824 | /* hash table entry per inotify-id */ |
372 | typedef struct |
1825 | typedef struct |
373 | { |
1826 | { |
374 | WL head; |
1827 | WL head; |
375 | } ANFS; |
1828 | } ANFS; |
|
|
1829 | #endif |
|
|
1830 | |
|
|
1831 | /* Heap Entry */ |
|
|
1832 | #if EV_HEAP_CACHE_AT |
|
|
1833 | /* a heap element */ |
|
|
1834 | typedef struct { |
|
|
1835 | ev_tstamp at; |
|
|
1836 | WT w; |
|
|
1837 | } ANHE; |
|
|
1838 | |
|
|
1839 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1840 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1841 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1842 | #else |
|
|
1843 | /* a heap element */ |
|
|
1844 | typedef WT ANHE; |
|
|
1845 | |
|
|
1846 | #define ANHE_w(he) (he) |
|
|
1847 | #define ANHE_at(he) (he)->at |
|
|
1848 | #define ANHE_at_cache(he) |
376 | #endif |
1849 | #endif |
377 | |
1850 | |
378 | #if EV_MULTIPLICITY |
1851 | #if EV_MULTIPLICITY |
379 | |
1852 | |
380 | struct ev_loop |
1853 | struct ev_loop |
… | |
… | |
386 | #undef VAR |
1859 | #undef VAR |
387 | }; |
1860 | }; |
388 | #include "ev_wrap.h" |
1861 | #include "ev_wrap.h" |
389 | |
1862 | |
390 | static struct ev_loop default_loop_struct; |
1863 | static struct ev_loop default_loop_struct; |
391 | struct ev_loop *ev_default_loop_ptr; |
1864 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
392 | |
1865 | |
393 | #else |
1866 | #else |
394 | |
1867 | |
395 | ev_tstamp ev_rt_now; |
1868 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
396 | #define VAR(name,decl) static decl; |
1869 | #define VAR(name,decl) static decl; |
397 | #include "ev_vars.h" |
1870 | #include "ev_vars.h" |
398 | #undef VAR |
1871 | #undef VAR |
399 | |
1872 | |
400 | static int ev_default_loop_ptr; |
1873 | static int ev_default_loop_ptr; |
401 | |
1874 | |
402 | #endif |
1875 | #endif |
403 | |
1876 | |
|
|
1877 | #if EV_FEATURE_API |
|
|
1878 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1879 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1880 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1881 | #else |
|
|
1882 | # define EV_RELEASE_CB (void)0 |
|
|
1883 | # define EV_ACQUIRE_CB (void)0 |
|
|
1884 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1885 | #endif |
|
|
1886 | |
|
|
1887 | #define EVBREAK_RECURSE 0x80 |
|
|
1888 | |
404 | /*****************************************************************************/ |
1889 | /*****************************************************************************/ |
405 | |
1890 | |
|
|
1891 | #ifndef EV_HAVE_EV_TIME |
406 | ev_tstamp |
1892 | ev_tstamp |
407 | ev_time (void) |
1893 | ev_time (void) EV_NOEXCEPT |
408 | { |
1894 | { |
409 | #if EV_USE_REALTIME |
1895 | #if EV_USE_REALTIME |
|
|
1896 | if (expect_true (have_realtime)) |
|
|
1897 | { |
410 | struct timespec ts; |
1898 | struct timespec ts; |
411 | clock_gettime (CLOCK_REALTIME, &ts); |
1899 | clock_gettime (CLOCK_REALTIME, &ts); |
412 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1900 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
413 | #else |
1901 | } |
|
|
1902 | #endif |
|
|
1903 | |
414 | struct timeval tv; |
1904 | struct timeval tv; |
415 | gettimeofday (&tv, 0); |
1905 | gettimeofday (&tv, 0); |
416 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1906 | return tv.tv_sec + tv.tv_usec * 1e-6; |
417 | #endif |
|
|
418 | } |
1907 | } |
|
|
1908 | #endif |
419 | |
1909 | |
420 | ev_tstamp inline_size |
1910 | inline_size ev_tstamp |
421 | get_clock (void) |
1911 | get_clock (void) |
422 | { |
1912 | { |
423 | #if EV_USE_MONOTONIC |
1913 | #if EV_USE_MONOTONIC |
424 | if (expect_true (have_monotonic)) |
1914 | if (expect_true (have_monotonic)) |
425 | { |
1915 | { |
… | |
… | |
432 | return ev_time (); |
1922 | return ev_time (); |
433 | } |
1923 | } |
434 | |
1924 | |
435 | #if EV_MULTIPLICITY |
1925 | #if EV_MULTIPLICITY |
436 | ev_tstamp |
1926 | ev_tstamp |
437 | ev_now (EV_P) |
1927 | ev_now (EV_P) EV_NOEXCEPT |
438 | { |
1928 | { |
439 | return ev_rt_now; |
1929 | return ev_rt_now; |
440 | } |
1930 | } |
441 | #endif |
1931 | #endif |
442 | |
1932 | |
443 | void |
1933 | void |
444 | ev_sleep (ev_tstamp delay) |
1934 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
445 | { |
1935 | { |
446 | if (delay > 0.) |
1936 | if (delay > 0.) |
447 | { |
1937 | { |
448 | #if EV_USE_NANOSLEEP |
1938 | #if EV_USE_NANOSLEEP |
449 | struct timespec ts; |
1939 | struct timespec ts; |
450 | |
1940 | |
451 | ts.tv_sec = (time_t)delay; |
1941 | EV_TS_SET (ts, delay); |
452 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
453 | |
|
|
454 | nanosleep (&ts, 0); |
1942 | nanosleep (&ts, 0); |
455 | #elif defined(_WIN32) |
1943 | #elif defined _WIN32 |
|
|
1944 | /* maybe this should round up, as ms is very low resolution */ |
|
|
1945 | /* compared to select (µs) or nanosleep (ns) */ |
456 | Sleep (delay * 1e3); |
1946 | Sleep ((unsigned long)(delay * 1e3)); |
457 | #else |
1947 | #else |
458 | struct timeval tv; |
1948 | struct timeval tv; |
459 | |
1949 | |
460 | tv.tv_sec = (time_t)delay; |
1950 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
461 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
1951 | /* something not guaranteed by newer posix versions, but guaranteed */ |
462 | |
1952 | /* by older ones */ |
|
|
1953 | EV_TV_SET (tv, delay); |
463 | select (0, 0, 0, 0, &tv); |
1954 | select (0, 0, 0, 0, &tv); |
464 | #endif |
1955 | #endif |
465 | } |
1956 | } |
466 | } |
1957 | } |
467 | |
1958 | |
468 | /*****************************************************************************/ |
1959 | /*****************************************************************************/ |
469 | |
1960 | |
470 | int inline_size |
1961 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
1962 | |
|
|
1963 | /* find a suitable new size for the given array, */ |
|
|
1964 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
1965 | inline_size int |
471 | array_nextsize (int elem, int cur, int cnt) |
1966 | array_nextsize (int elem, int cur, int cnt) |
472 | { |
1967 | { |
473 | int ncur = cur + 1; |
1968 | int ncur = cur + 1; |
474 | |
1969 | |
475 | do |
1970 | do |
476 | ncur <<= 1; |
1971 | ncur <<= 1; |
477 | while (cnt > ncur); |
1972 | while (cnt > ncur); |
478 | |
1973 | |
479 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
1974 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
480 | if (elem * ncur > 4096) |
1975 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
481 | { |
1976 | { |
482 | ncur *= elem; |
1977 | ncur *= elem; |
483 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
1978 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
484 | ncur = ncur - sizeof (void *) * 4; |
1979 | ncur = ncur - sizeof (void *) * 4; |
485 | ncur /= elem; |
1980 | ncur /= elem; |
486 | } |
1981 | } |
487 | |
1982 | |
488 | return ncur; |
1983 | return ncur; |
489 | } |
1984 | } |
490 | |
1985 | |
491 | static noinline void * |
1986 | noinline ecb_cold |
|
|
1987 | static void * |
492 | array_realloc (int elem, void *base, int *cur, int cnt) |
1988 | array_realloc (int elem, void *base, int *cur, int cnt) |
493 | { |
1989 | { |
494 | *cur = array_nextsize (elem, *cur, cnt); |
1990 | *cur = array_nextsize (elem, *cur, cnt); |
495 | return ev_realloc (base, elem * *cur); |
1991 | return ev_realloc (base, elem * *cur); |
496 | } |
1992 | } |
|
|
1993 | |
|
|
1994 | #define array_needsize_noinit(base,count) |
|
|
1995 | |
|
|
1996 | #define array_needsize_zerofill(base,count) \ |
|
|
1997 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
497 | |
1998 | |
498 | #define array_needsize(type,base,cur,cnt,init) \ |
1999 | #define array_needsize(type,base,cur,cnt,init) \ |
499 | if (expect_false ((cnt) > (cur))) \ |
2000 | if (expect_false ((cnt) > (cur))) \ |
500 | { \ |
2001 | { \ |
501 | int ocur_ = (cur); \ |
2002 | ecb_unused int ocur_ = (cur); \ |
502 | (base) = (type *)array_realloc \ |
2003 | (base) = (type *)array_realloc \ |
503 | (sizeof (type), (base), &(cur), (cnt)); \ |
2004 | (sizeof (type), (base), &(cur), (cnt)); \ |
504 | init ((base) + (ocur_), (cur) - ocur_); \ |
2005 | init ((base) + (ocur_), (cur) - ocur_); \ |
505 | } |
2006 | } |
506 | |
2007 | |
… | |
… | |
513 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
2014 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
514 | } |
2015 | } |
515 | #endif |
2016 | #endif |
516 | |
2017 | |
517 | #define array_free(stem, idx) \ |
2018 | #define array_free(stem, idx) \ |
518 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
2019 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
519 | |
2020 | |
520 | /*****************************************************************************/ |
2021 | /*****************************************************************************/ |
521 | |
2022 | |
|
|
2023 | /* dummy callback for pending events */ |
522 | void noinline |
2024 | noinline |
|
|
2025 | static void |
|
|
2026 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
2027 | { |
|
|
2028 | } |
|
|
2029 | |
|
|
2030 | noinline |
|
|
2031 | void |
523 | ev_feed_event (EV_P_ void *w, int revents) |
2032 | ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT |
524 | { |
2033 | { |
525 | W w_ = (W)w; |
2034 | W w_ = (W)w; |
526 | int pri = ABSPRI (w_); |
2035 | int pri = ABSPRI (w_); |
527 | |
2036 | |
528 | if (expect_false (w_->pending)) |
2037 | if (expect_false (w_->pending)) |
529 | pendings [pri][w_->pending - 1].events |= revents; |
2038 | pendings [pri][w_->pending - 1].events |= revents; |
530 | else |
2039 | else |
531 | { |
2040 | { |
532 | w_->pending = ++pendingcnt [pri]; |
2041 | w_->pending = ++pendingcnt [pri]; |
533 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
2042 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); |
534 | pendings [pri][w_->pending - 1].w = w_; |
2043 | pendings [pri][w_->pending - 1].w = w_; |
535 | pendings [pri][w_->pending - 1].events = revents; |
2044 | pendings [pri][w_->pending - 1].events = revents; |
536 | } |
2045 | } |
537 | } |
|
|
538 | |
2046 | |
539 | void inline_speed |
2047 | pendingpri = NUMPRI - 1; |
|
|
2048 | } |
|
|
2049 | |
|
|
2050 | inline_speed void |
|
|
2051 | feed_reverse (EV_P_ W w) |
|
|
2052 | { |
|
|
2053 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit); |
|
|
2054 | rfeeds [rfeedcnt++] = w; |
|
|
2055 | } |
|
|
2056 | |
|
|
2057 | inline_size void |
|
|
2058 | feed_reverse_done (EV_P_ int revents) |
|
|
2059 | { |
|
|
2060 | do |
|
|
2061 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
2062 | while (rfeedcnt); |
|
|
2063 | } |
|
|
2064 | |
|
|
2065 | inline_speed void |
540 | queue_events (EV_P_ W *events, int eventcnt, int type) |
2066 | queue_events (EV_P_ W *events, int eventcnt, int type) |
541 | { |
2067 | { |
542 | int i; |
2068 | int i; |
543 | |
2069 | |
544 | for (i = 0; i < eventcnt; ++i) |
2070 | for (i = 0; i < eventcnt; ++i) |
545 | ev_feed_event (EV_A_ events [i], type); |
2071 | ev_feed_event (EV_A_ events [i], type); |
546 | } |
2072 | } |
547 | |
2073 | |
548 | /*****************************************************************************/ |
2074 | /*****************************************************************************/ |
549 | |
2075 | |
550 | void inline_size |
2076 | inline_speed void |
551 | anfds_init (ANFD *base, int count) |
|
|
552 | { |
|
|
553 | while (count--) |
|
|
554 | { |
|
|
555 | base->head = 0; |
|
|
556 | base->events = EV_NONE; |
|
|
557 | base->reify = 0; |
|
|
558 | |
|
|
559 | ++base; |
|
|
560 | } |
|
|
561 | } |
|
|
562 | |
|
|
563 | void inline_speed |
|
|
564 | fd_event (EV_P_ int fd, int revents) |
2077 | fd_event_nocheck (EV_P_ int fd, int revents) |
565 | { |
2078 | { |
566 | ANFD *anfd = anfds + fd; |
2079 | ANFD *anfd = anfds + fd; |
567 | ev_io *w; |
2080 | ev_io *w; |
568 | |
2081 | |
569 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
2082 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
573 | if (ev) |
2086 | if (ev) |
574 | ev_feed_event (EV_A_ (W)w, ev); |
2087 | ev_feed_event (EV_A_ (W)w, ev); |
575 | } |
2088 | } |
576 | } |
2089 | } |
577 | |
2090 | |
578 | void |
2091 | /* do not submit kernel events for fds that have reify set */ |
|
|
2092 | /* because that means they changed while we were polling for new events */ |
|
|
2093 | inline_speed void |
579 | ev_feed_fd_event (EV_P_ int fd, int revents) |
2094 | fd_event (EV_P_ int fd, int revents) |
|
|
2095 | { |
|
|
2096 | ANFD *anfd = anfds + fd; |
|
|
2097 | |
|
|
2098 | if (expect_true (!anfd->reify)) |
|
|
2099 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
2100 | } |
|
|
2101 | |
|
|
2102 | void |
|
|
2103 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT |
580 | { |
2104 | { |
581 | if (fd >= 0 && fd < anfdmax) |
2105 | if (fd >= 0 && fd < anfdmax) |
582 | fd_event (EV_A_ fd, revents); |
2106 | fd_event_nocheck (EV_A_ fd, revents); |
583 | } |
2107 | } |
584 | |
2108 | |
585 | void inline_size |
2109 | /* make sure the external fd watch events are in-sync */ |
|
|
2110 | /* with the kernel/libev internal state */ |
|
|
2111 | inline_size void |
586 | fd_reify (EV_P) |
2112 | fd_reify (EV_P) |
587 | { |
2113 | { |
588 | int i; |
2114 | int i; |
|
|
2115 | |
|
|
2116 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
2117 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2118 | { |
|
|
2119 | int fd = fdchanges [i]; |
|
|
2120 | ANFD *anfd = anfds + fd; |
|
|
2121 | |
|
|
2122 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
2123 | { |
|
|
2124 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2125 | |
|
|
2126 | if (handle != anfd->handle) |
|
|
2127 | { |
|
|
2128 | unsigned long arg; |
|
|
2129 | |
|
|
2130 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2131 | |
|
|
2132 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2133 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
2134 | anfd->events = 0; |
|
|
2135 | anfd->handle = handle; |
|
|
2136 | } |
|
|
2137 | } |
|
|
2138 | } |
|
|
2139 | #endif |
589 | |
2140 | |
590 | for (i = 0; i < fdchangecnt; ++i) |
2141 | for (i = 0; i < fdchangecnt; ++i) |
591 | { |
2142 | { |
592 | int fd = fdchanges [i]; |
2143 | int fd = fdchanges [i]; |
593 | ANFD *anfd = anfds + fd; |
2144 | ANFD *anfd = anfds + fd; |
594 | ev_io *w; |
2145 | ev_io *w; |
595 | |
2146 | |
596 | unsigned char events = 0; |
2147 | unsigned char o_events = anfd->events; |
|
|
2148 | unsigned char o_reify = anfd->reify; |
597 | |
2149 | |
598 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
2150 | anfd->reify = 0; |
599 | events |= (unsigned char)w->events; |
|
|
600 | |
2151 | |
601 | #if EV_SELECT_IS_WINSOCKET |
2152 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
602 | if (events) |
|
|
603 | { |
2153 | { |
604 | unsigned long argp; |
2154 | anfd->events = 0; |
605 | #ifdef EV_FD_TO_WIN32_HANDLE |
2155 | |
606 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
2156 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
607 | #else |
2157 | anfd->events |= (unsigned char)w->events; |
608 | anfd->handle = _get_osfhandle (fd); |
2158 | |
609 | #endif |
2159 | if (o_events != anfd->events) |
610 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
2160 | o_reify = EV__IOFDSET; /* actually |= */ |
611 | } |
2161 | } |
612 | #endif |
|
|
613 | |
2162 | |
614 | { |
2163 | if (o_reify & EV__IOFDSET) |
615 | unsigned char o_events = anfd->events; |
|
|
616 | unsigned char o_reify = anfd->reify; |
|
|
617 | |
|
|
618 | anfd->reify = 0; |
|
|
619 | anfd->events = events; |
|
|
620 | |
|
|
621 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
622 | backend_modify (EV_A_ fd, o_events, events); |
2164 | backend_modify (EV_A_ fd, o_events, anfd->events); |
623 | } |
|
|
624 | } |
2165 | } |
625 | |
2166 | |
626 | fdchangecnt = 0; |
2167 | fdchangecnt = 0; |
627 | } |
2168 | } |
628 | |
2169 | |
|
|
2170 | /* something about the given fd changed */ |
629 | void inline_size |
2171 | inline_size |
|
|
2172 | void |
630 | fd_change (EV_P_ int fd, int flags) |
2173 | fd_change (EV_P_ int fd, int flags) |
631 | { |
2174 | { |
632 | unsigned char reify = anfds [fd].reify; |
2175 | unsigned char reify = anfds [fd].reify; |
633 | anfds [fd].reify |= flags; |
2176 | anfds [fd].reify |= flags; |
634 | |
2177 | |
635 | if (expect_true (!reify)) |
2178 | if (expect_true (!reify)) |
636 | { |
2179 | { |
637 | ++fdchangecnt; |
2180 | ++fdchangecnt; |
638 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
2181 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
639 | fdchanges [fdchangecnt - 1] = fd; |
2182 | fdchanges [fdchangecnt - 1] = fd; |
640 | } |
2183 | } |
641 | } |
2184 | } |
642 | |
2185 | |
643 | void inline_speed |
2186 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
2187 | inline_speed ecb_cold void |
644 | fd_kill (EV_P_ int fd) |
2188 | fd_kill (EV_P_ int fd) |
645 | { |
2189 | { |
646 | ev_io *w; |
2190 | ev_io *w; |
647 | |
2191 | |
648 | while ((w = (ev_io *)anfds [fd].head)) |
2192 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
650 | ev_io_stop (EV_A_ w); |
2194 | ev_io_stop (EV_A_ w); |
651 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
2195 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
652 | } |
2196 | } |
653 | } |
2197 | } |
654 | |
2198 | |
655 | int inline_size |
2199 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
2200 | inline_size ecb_cold int |
656 | fd_valid (int fd) |
2201 | fd_valid (int fd) |
657 | { |
2202 | { |
658 | #ifdef _WIN32 |
2203 | #ifdef _WIN32 |
659 | return _get_osfhandle (fd) != -1; |
2204 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
660 | #else |
2205 | #else |
661 | return fcntl (fd, F_GETFD) != -1; |
2206 | return fcntl (fd, F_GETFD) != -1; |
662 | #endif |
2207 | #endif |
663 | } |
2208 | } |
664 | |
2209 | |
665 | /* called on EBADF to verify fds */ |
2210 | /* called on EBADF to verify fds */ |
666 | static void noinline |
2211 | noinline ecb_cold |
|
|
2212 | static void |
667 | fd_ebadf (EV_P) |
2213 | fd_ebadf (EV_P) |
668 | { |
2214 | { |
669 | int fd; |
2215 | int fd; |
670 | |
2216 | |
671 | for (fd = 0; fd < anfdmax; ++fd) |
2217 | for (fd = 0; fd < anfdmax; ++fd) |
672 | if (anfds [fd].events) |
2218 | if (anfds [fd].events) |
673 | if (!fd_valid (fd) == -1 && errno == EBADF) |
2219 | if (!fd_valid (fd) && errno == EBADF) |
674 | fd_kill (EV_A_ fd); |
2220 | fd_kill (EV_A_ fd); |
675 | } |
2221 | } |
676 | |
2222 | |
677 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
2223 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
678 | static void noinline |
2224 | noinline ecb_cold |
|
|
2225 | static void |
679 | fd_enomem (EV_P) |
2226 | fd_enomem (EV_P) |
680 | { |
2227 | { |
681 | int fd; |
2228 | int fd; |
682 | |
2229 | |
683 | for (fd = anfdmax; fd--; ) |
2230 | for (fd = anfdmax; fd--; ) |
684 | if (anfds [fd].events) |
2231 | if (anfds [fd].events) |
685 | { |
2232 | { |
686 | fd_kill (EV_A_ fd); |
2233 | fd_kill (EV_A_ fd); |
687 | return; |
2234 | break; |
688 | } |
2235 | } |
689 | } |
2236 | } |
690 | |
2237 | |
691 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
2238 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
692 | static void noinline |
2239 | noinline |
|
|
2240 | static void |
693 | fd_rearm_all (EV_P) |
2241 | fd_rearm_all (EV_P) |
694 | { |
2242 | { |
695 | int fd; |
2243 | int fd; |
696 | |
2244 | |
697 | for (fd = 0; fd < anfdmax; ++fd) |
2245 | for (fd = 0; fd < anfdmax; ++fd) |
698 | if (anfds [fd].events) |
2246 | if (anfds [fd].events) |
699 | { |
2247 | { |
700 | anfds [fd].events = 0; |
2248 | anfds [fd].events = 0; |
|
|
2249 | anfds [fd].emask = 0; |
701 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
2250 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
702 | } |
2251 | } |
703 | } |
2252 | } |
704 | |
2253 | |
705 | /*****************************************************************************/ |
2254 | /* used to prepare libev internal fd's */ |
706 | |
2255 | /* this is not fork-safe */ |
707 | void inline_speed |
2256 | inline_speed void |
708 | upheap (WT *heap, int k) |
|
|
709 | { |
|
|
710 | WT w = heap [k]; |
|
|
711 | |
|
|
712 | while (k) |
|
|
713 | { |
|
|
714 | int p = (k - 1) >> 1; |
|
|
715 | |
|
|
716 | if (heap [p]->at <= w->at) |
|
|
717 | break; |
|
|
718 | |
|
|
719 | heap [k] = heap [p]; |
|
|
720 | ((W)heap [k])->active = k + 1; |
|
|
721 | k = p; |
|
|
722 | } |
|
|
723 | |
|
|
724 | heap [k] = w; |
|
|
725 | ((W)heap [k])->active = k + 1; |
|
|
726 | } |
|
|
727 | |
|
|
728 | void inline_speed |
|
|
729 | downheap (WT *heap, int N, int k) |
|
|
730 | { |
|
|
731 | WT w = heap [k]; |
|
|
732 | |
|
|
733 | for (;;) |
|
|
734 | { |
|
|
735 | int c = (k << 1) + 1; |
|
|
736 | |
|
|
737 | if (c >= N) |
|
|
738 | break; |
|
|
739 | |
|
|
740 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
741 | ? 1 : 0; |
|
|
742 | |
|
|
743 | if (w->at <= heap [c]->at) |
|
|
744 | break; |
|
|
745 | |
|
|
746 | heap [k] = heap [c]; |
|
|
747 | ((W)heap [k])->active = k + 1; |
|
|
748 | |
|
|
749 | k = c; |
|
|
750 | } |
|
|
751 | |
|
|
752 | heap [k] = w; |
|
|
753 | ((W)heap [k])->active = k + 1; |
|
|
754 | } |
|
|
755 | |
|
|
756 | void inline_size |
|
|
757 | adjustheap (WT *heap, int N, int k) |
|
|
758 | { |
|
|
759 | upheap (heap, k); |
|
|
760 | downheap (heap, N, k); |
|
|
761 | } |
|
|
762 | |
|
|
763 | /*****************************************************************************/ |
|
|
764 | |
|
|
765 | typedef struct |
|
|
766 | { |
|
|
767 | WL head; |
|
|
768 | EV_ATOMIC_T gotsig; |
|
|
769 | } ANSIG; |
|
|
770 | |
|
|
771 | static ANSIG *signals; |
|
|
772 | static int signalmax; |
|
|
773 | |
|
|
774 | static EV_ATOMIC_T gotsig; |
|
|
775 | |
|
|
776 | void inline_size |
|
|
777 | signals_init (ANSIG *base, int count) |
|
|
778 | { |
|
|
779 | while (count--) |
|
|
780 | { |
|
|
781 | base->head = 0; |
|
|
782 | base->gotsig = 0; |
|
|
783 | |
|
|
784 | ++base; |
|
|
785 | } |
|
|
786 | } |
|
|
787 | |
|
|
788 | /*****************************************************************************/ |
|
|
789 | |
|
|
790 | void inline_speed |
|
|
791 | fd_intern (int fd) |
2257 | fd_intern (int fd) |
792 | { |
2258 | { |
793 | #ifdef _WIN32 |
2259 | #ifdef _WIN32 |
794 | int arg = 1; |
2260 | unsigned long arg = 1; |
795 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
2261 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
796 | #else |
2262 | #else |
797 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
2263 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
798 | fcntl (fd, F_SETFL, O_NONBLOCK); |
2264 | fcntl (fd, F_SETFL, O_NONBLOCK); |
799 | #endif |
2265 | #endif |
800 | } |
2266 | } |
801 | |
2267 | |
802 | static void noinline |
2268 | /*****************************************************************************/ |
|
|
2269 | |
|
|
2270 | /* |
|
|
2271 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
2272 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
2273 | * the branching factor of the d-tree. |
|
|
2274 | */ |
|
|
2275 | |
|
|
2276 | /* |
|
|
2277 | * at the moment we allow libev the luxury of two heaps, |
|
|
2278 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2279 | * which is more cache-efficient. |
|
|
2280 | * the difference is about 5% with 50000+ watchers. |
|
|
2281 | */ |
|
|
2282 | #if EV_USE_4HEAP |
|
|
2283 | |
|
|
2284 | #define DHEAP 4 |
|
|
2285 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2286 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2287 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2288 | |
|
|
2289 | /* away from the root */ |
|
|
2290 | inline_speed void |
|
|
2291 | downheap (ANHE *heap, int N, int k) |
|
|
2292 | { |
|
|
2293 | ANHE he = heap [k]; |
|
|
2294 | ANHE *E = heap + N + HEAP0; |
|
|
2295 | |
|
|
2296 | for (;;) |
|
|
2297 | { |
|
|
2298 | ev_tstamp minat; |
|
|
2299 | ANHE *minpos; |
|
|
2300 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2301 | |
|
|
2302 | /* find minimum child */ |
|
|
2303 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
2304 | { |
|
|
2305 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2306 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2307 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2308 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2309 | } |
|
|
2310 | else if (pos < E) |
|
|
2311 | { |
|
|
2312 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2313 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2314 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2315 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2316 | } |
|
|
2317 | else |
|
|
2318 | break; |
|
|
2319 | |
|
|
2320 | if (ANHE_at (he) <= minat) |
|
|
2321 | break; |
|
|
2322 | |
|
|
2323 | heap [k] = *minpos; |
|
|
2324 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2325 | |
|
|
2326 | k = minpos - heap; |
|
|
2327 | } |
|
|
2328 | |
|
|
2329 | heap [k] = he; |
|
|
2330 | ev_active (ANHE_w (he)) = k; |
|
|
2331 | } |
|
|
2332 | |
|
|
2333 | #else /* 4HEAP */ |
|
|
2334 | |
|
|
2335 | #define HEAP0 1 |
|
|
2336 | #define HPARENT(k) ((k) >> 1) |
|
|
2337 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2338 | |
|
|
2339 | /* away from the root */ |
|
|
2340 | inline_speed void |
|
|
2341 | downheap (ANHE *heap, int N, int k) |
|
|
2342 | { |
|
|
2343 | ANHE he = heap [k]; |
|
|
2344 | |
|
|
2345 | for (;;) |
|
|
2346 | { |
|
|
2347 | int c = k << 1; |
|
|
2348 | |
|
|
2349 | if (c >= N + HEAP0) |
|
|
2350 | break; |
|
|
2351 | |
|
|
2352 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2353 | ? 1 : 0; |
|
|
2354 | |
|
|
2355 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2356 | break; |
|
|
2357 | |
|
|
2358 | heap [k] = heap [c]; |
|
|
2359 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2360 | |
|
|
2361 | k = c; |
|
|
2362 | } |
|
|
2363 | |
|
|
2364 | heap [k] = he; |
|
|
2365 | ev_active (ANHE_w (he)) = k; |
|
|
2366 | } |
|
|
2367 | #endif |
|
|
2368 | |
|
|
2369 | /* towards the root */ |
|
|
2370 | inline_speed void |
|
|
2371 | upheap (ANHE *heap, int k) |
|
|
2372 | { |
|
|
2373 | ANHE he = heap [k]; |
|
|
2374 | |
|
|
2375 | for (;;) |
|
|
2376 | { |
|
|
2377 | int p = HPARENT (k); |
|
|
2378 | |
|
|
2379 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2380 | break; |
|
|
2381 | |
|
|
2382 | heap [k] = heap [p]; |
|
|
2383 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2384 | k = p; |
|
|
2385 | } |
|
|
2386 | |
|
|
2387 | heap [k] = he; |
|
|
2388 | ev_active (ANHE_w (he)) = k; |
|
|
2389 | } |
|
|
2390 | |
|
|
2391 | /* move an element suitably so it is in a correct place */ |
|
|
2392 | inline_size void |
|
|
2393 | adjustheap (ANHE *heap, int N, int k) |
|
|
2394 | { |
|
|
2395 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2396 | upheap (heap, k); |
|
|
2397 | else |
|
|
2398 | downheap (heap, N, k); |
|
|
2399 | } |
|
|
2400 | |
|
|
2401 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2402 | inline_size void |
|
|
2403 | reheap (ANHE *heap, int N) |
|
|
2404 | { |
|
|
2405 | int i; |
|
|
2406 | |
|
|
2407 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2408 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2409 | for (i = 0; i < N; ++i) |
|
|
2410 | upheap (heap, i + HEAP0); |
|
|
2411 | } |
|
|
2412 | |
|
|
2413 | /*****************************************************************************/ |
|
|
2414 | |
|
|
2415 | /* associate signal watchers to a signal signal */ |
|
|
2416 | typedef struct |
|
|
2417 | { |
|
|
2418 | EV_ATOMIC_T pending; |
|
|
2419 | #if EV_MULTIPLICITY |
|
|
2420 | EV_P; |
|
|
2421 | #endif |
|
|
2422 | WL head; |
|
|
2423 | } ANSIG; |
|
|
2424 | |
|
|
2425 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2426 | |
|
|
2427 | /*****************************************************************************/ |
|
|
2428 | |
|
|
2429 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2430 | |
|
|
2431 | noinline ecb_cold |
|
|
2432 | static void |
803 | evpipe_init (EV_P) |
2433 | evpipe_init (EV_P) |
804 | { |
2434 | { |
805 | if (!ev_is_active (&pipeev)) |
2435 | if (!ev_is_active (&pipe_w)) |
806 | { |
2436 | { |
|
|
2437 | int fds [2]; |
|
|
2438 | |
|
|
2439 | # if EV_USE_EVENTFD |
|
|
2440 | fds [0] = -1; |
|
|
2441 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2442 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2443 | fds [1] = eventfd (0, 0); |
|
|
2444 | |
|
|
2445 | if (fds [1] < 0) |
|
|
2446 | # endif |
|
|
2447 | { |
807 | while (pipe (evpipe)) |
2448 | while (pipe (fds)) |
808 | syserr ("(libev) error creating signal/async pipe"); |
2449 | ev_syserr ("(libev) error creating signal/async pipe"); |
809 | |
2450 | |
810 | fd_intern (evpipe [0]); |
2451 | fd_intern (fds [0]); |
|
|
2452 | } |
|
|
2453 | |
|
|
2454 | evpipe [0] = fds [0]; |
|
|
2455 | |
|
|
2456 | if (evpipe [1] < 0) |
|
|
2457 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2458 | else |
|
|
2459 | { |
|
|
2460 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2461 | /* so that evpipe_write can always rely on its value. */ |
|
|
2462 | /* this branch does not do anything sensible on windows, */ |
|
|
2463 | /* so must not be executed on windows */ |
|
|
2464 | |
|
|
2465 | dup2 (fds [1], evpipe [1]); |
|
|
2466 | close (fds [1]); |
|
|
2467 | } |
|
|
2468 | |
811 | fd_intern (evpipe [1]); |
2469 | fd_intern (evpipe [1]); |
812 | |
2470 | |
813 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
2471 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
814 | ev_io_start (EV_A_ &pipeev); |
2472 | ev_io_start (EV_A_ &pipe_w); |
815 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2473 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
816 | } |
2474 | } |
817 | } |
2475 | } |
818 | |
2476 | |
819 | void inline_size |
2477 | inline_speed void |
820 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
2478 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
821 | { |
2479 | { |
822 | if (!*flag) |
2480 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2481 | |
|
|
2482 | if (expect_true (*flag)) |
|
|
2483 | return; |
|
|
2484 | |
|
|
2485 | *flag = 1; |
|
|
2486 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2487 | |
|
|
2488 | pipe_write_skipped = 1; |
|
|
2489 | |
|
|
2490 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2491 | |
|
|
2492 | if (pipe_write_wanted) |
823 | { |
2493 | { |
|
|
2494 | int old_errno; |
|
|
2495 | |
|
|
2496 | pipe_write_skipped = 0; |
|
|
2497 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2498 | |
824 | int old_errno = errno; /* save errno becaue write might clobber it */ |
2499 | old_errno = errno; /* save errno because write will clobber it */ |
825 | |
2500 | |
826 | *flag = 1; |
2501 | #if EV_USE_EVENTFD |
827 | write (evpipe [1], &old_errno, 1); |
2502 | if (evpipe [0] < 0) |
|
|
2503 | { |
|
|
2504 | uint64_t counter = 1; |
|
|
2505 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2506 | } |
|
|
2507 | else |
|
|
2508 | #endif |
|
|
2509 | { |
|
|
2510 | #ifdef _WIN32 |
|
|
2511 | WSABUF buf; |
|
|
2512 | DWORD sent; |
|
|
2513 | buf.buf = (char *)&buf; |
|
|
2514 | buf.len = 1; |
|
|
2515 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2516 | #else |
|
|
2517 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2518 | #endif |
|
|
2519 | } |
828 | |
2520 | |
829 | errno = old_errno; |
2521 | errno = old_errno; |
830 | } |
2522 | } |
831 | } |
2523 | } |
832 | |
2524 | |
|
|
2525 | /* called whenever the libev signal pipe */ |
|
|
2526 | /* got some events (signal, async) */ |
833 | static void |
2527 | static void |
834 | pipecb (EV_P_ ev_io *iow, int revents) |
2528 | pipecb (EV_P_ ev_io *iow, int revents) |
835 | { |
2529 | { |
|
|
2530 | int i; |
|
|
2531 | |
|
|
2532 | if (revents & EV_READ) |
836 | { |
2533 | { |
837 | int dummy; |
2534 | #if EV_USE_EVENTFD |
|
|
2535 | if (evpipe [0] < 0) |
|
|
2536 | { |
|
|
2537 | uint64_t counter; |
|
|
2538 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2539 | } |
|
|
2540 | else |
|
|
2541 | #endif |
|
|
2542 | { |
|
|
2543 | char dummy[4]; |
|
|
2544 | #ifdef _WIN32 |
|
|
2545 | WSABUF buf; |
|
|
2546 | DWORD recvd; |
|
|
2547 | DWORD flags = 0; |
|
|
2548 | buf.buf = dummy; |
|
|
2549 | buf.len = sizeof (dummy); |
|
|
2550 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2551 | #else |
838 | read (evpipe [0], &dummy, 1); |
2552 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2553 | #endif |
|
|
2554 | } |
839 | } |
2555 | } |
840 | |
2556 | |
841 | if (gotsig && ev_is_default_loop (EV_A)) |
2557 | pipe_write_skipped = 0; |
842 | { |
|
|
843 | int signum; |
|
|
844 | gotsig = 0; |
|
|
845 | |
2558 | |
846 | for (signum = signalmax; signum--; ) |
2559 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
847 | if (signals [signum].gotsig) |
2560 | |
|
|
2561 | #if EV_SIGNAL_ENABLE |
|
|
2562 | if (sig_pending) |
|
|
2563 | { |
|
|
2564 | sig_pending = 0; |
|
|
2565 | |
|
|
2566 | ECB_MEMORY_FENCE; |
|
|
2567 | |
|
|
2568 | for (i = EV_NSIG - 1; i--; ) |
|
|
2569 | if (expect_false (signals [i].pending)) |
848 | ev_feed_signal_event (EV_A_ signum + 1); |
2570 | ev_feed_signal_event (EV_A_ i + 1); |
849 | } |
2571 | } |
|
|
2572 | #endif |
850 | |
2573 | |
851 | #if EV_ASYNC_ENABLE |
2574 | #if EV_ASYNC_ENABLE |
852 | if (gotasync) |
2575 | if (async_pending) |
853 | { |
2576 | { |
854 | int i; |
2577 | async_pending = 0; |
855 | gotasync = 0; |
2578 | |
|
|
2579 | ECB_MEMORY_FENCE; |
856 | |
2580 | |
857 | for (i = asynccnt; i--; ) |
2581 | for (i = asynccnt; i--; ) |
858 | if (asyncs [i]->sent) |
2582 | if (asyncs [i]->sent) |
859 | { |
2583 | { |
860 | asyncs [i]->sent = 0; |
2584 | asyncs [i]->sent = 0; |
|
|
2585 | ECB_MEMORY_FENCE_RELEASE; |
861 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
2586 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
862 | } |
2587 | } |
863 | } |
2588 | } |
864 | #endif |
2589 | #endif |
865 | } |
2590 | } |
866 | |
2591 | |
867 | /*****************************************************************************/ |
2592 | /*****************************************************************************/ |
868 | |
2593 | |
|
|
2594 | void |
|
|
2595 | ev_feed_signal (int signum) EV_NOEXCEPT |
|
|
2596 | { |
|
|
2597 | #if EV_MULTIPLICITY |
|
|
2598 | EV_P; |
|
|
2599 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2600 | EV_A = signals [signum - 1].loop; |
|
|
2601 | |
|
|
2602 | if (!EV_A) |
|
|
2603 | return; |
|
|
2604 | #endif |
|
|
2605 | |
|
|
2606 | signals [signum - 1].pending = 1; |
|
|
2607 | evpipe_write (EV_A_ &sig_pending); |
|
|
2608 | } |
|
|
2609 | |
869 | static void |
2610 | static void |
870 | sighandler (int signum) |
2611 | ev_sighandler (int signum) |
871 | { |
2612 | { |
|
|
2613 | #ifdef _WIN32 |
|
|
2614 | signal (signum, ev_sighandler); |
|
|
2615 | #endif |
|
|
2616 | |
|
|
2617 | ev_feed_signal (signum); |
|
|
2618 | } |
|
|
2619 | |
|
|
2620 | noinline |
|
|
2621 | void |
|
|
2622 | ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT |
|
|
2623 | { |
|
|
2624 | WL w; |
|
|
2625 | |
|
|
2626 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2627 | return; |
|
|
2628 | |
|
|
2629 | --signum; |
|
|
2630 | |
872 | #if EV_MULTIPLICITY |
2631 | #if EV_MULTIPLICITY |
873 | struct ev_loop *loop = &default_loop_struct; |
2632 | /* it is permissible to try to feed a signal to the wrong loop */ |
874 | #endif |
2633 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
875 | |
2634 | |
876 | #if _WIN32 |
2635 | if (expect_false (signals [signum].loop != EV_A)) |
877 | signal (signum, sighandler); |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | signals [signum - 1].gotsig = 1; |
|
|
881 | evpipe_write (EV_A_ &gotsig); |
|
|
882 | } |
|
|
883 | |
|
|
884 | void noinline |
|
|
885 | ev_feed_signal_event (EV_P_ int signum) |
|
|
886 | { |
|
|
887 | WL w; |
|
|
888 | |
|
|
889 | #if EV_MULTIPLICITY |
|
|
890 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
891 | #endif |
|
|
892 | |
|
|
893 | --signum; |
|
|
894 | |
|
|
895 | if (signum < 0 || signum >= signalmax) |
|
|
896 | return; |
2636 | return; |
|
|
2637 | #endif |
897 | |
2638 | |
898 | signals [signum].gotsig = 0; |
2639 | signals [signum].pending = 0; |
|
|
2640 | ECB_MEMORY_FENCE_RELEASE; |
899 | |
2641 | |
900 | for (w = signals [signum].head; w; w = w->next) |
2642 | for (w = signals [signum].head; w; w = w->next) |
901 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2643 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
902 | } |
2644 | } |
903 | |
2645 | |
|
|
2646 | #if EV_USE_SIGNALFD |
|
|
2647 | static void |
|
|
2648 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2649 | { |
|
|
2650 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
2651 | |
|
|
2652 | for (;;) |
|
|
2653 | { |
|
|
2654 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
2655 | |
|
|
2656 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
2657 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2658 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
2659 | |
|
|
2660 | if (res < (ssize_t)sizeof (si)) |
|
|
2661 | break; |
|
|
2662 | } |
|
|
2663 | } |
|
|
2664 | #endif |
|
|
2665 | |
|
|
2666 | #endif |
|
|
2667 | |
904 | /*****************************************************************************/ |
2668 | /*****************************************************************************/ |
905 | |
2669 | |
|
|
2670 | #if EV_CHILD_ENABLE |
906 | static WL childs [EV_PID_HASHSIZE]; |
2671 | static WL childs [EV_PID_HASHSIZE]; |
907 | |
|
|
908 | #ifndef _WIN32 |
|
|
909 | |
2672 | |
910 | static ev_signal childev; |
2673 | static ev_signal childev; |
911 | |
2674 | |
912 | #ifndef WIFCONTINUED |
2675 | #ifndef WIFCONTINUED |
913 | # define WIFCONTINUED(status) 0 |
2676 | # define WIFCONTINUED(status) 0 |
914 | #endif |
2677 | #endif |
915 | |
2678 | |
916 | void inline_speed |
2679 | /* handle a single child status event */ |
|
|
2680 | inline_speed void |
917 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
2681 | child_reap (EV_P_ int chain, int pid, int status) |
918 | { |
2682 | { |
919 | ev_child *w; |
2683 | ev_child *w; |
920 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
2684 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
921 | |
2685 | |
922 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
2686 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
923 | { |
2687 | { |
924 | if ((w->pid == pid || !w->pid) |
2688 | if ((w->pid == pid || !w->pid) |
925 | && (!traced || (w->flags & 1))) |
2689 | && (!traced || (w->flags & 1))) |
926 | { |
2690 | { |
927 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
2691 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
928 | w->rpid = pid; |
2692 | w->rpid = pid; |
929 | w->rstatus = status; |
2693 | w->rstatus = status; |
930 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
2694 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
931 | } |
2695 | } |
932 | } |
2696 | } |
… | |
… | |
934 | |
2698 | |
935 | #ifndef WCONTINUED |
2699 | #ifndef WCONTINUED |
936 | # define WCONTINUED 0 |
2700 | # define WCONTINUED 0 |
937 | #endif |
2701 | #endif |
938 | |
2702 | |
|
|
2703 | /* called on sigchld etc., calls waitpid */ |
939 | static void |
2704 | static void |
940 | childcb (EV_P_ ev_signal *sw, int revents) |
2705 | childcb (EV_P_ ev_signal *sw, int revents) |
941 | { |
2706 | { |
942 | int pid, status; |
2707 | int pid, status; |
943 | |
2708 | |
… | |
… | |
946 | if (!WCONTINUED |
2711 | if (!WCONTINUED |
947 | || errno != EINVAL |
2712 | || errno != EINVAL |
948 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
2713 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
949 | return; |
2714 | return; |
950 | |
2715 | |
951 | /* make sure we are called again until all childs have been reaped */ |
2716 | /* make sure we are called again until all children have been reaped */ |
952 | /* we need to do it this way so that the callback gets called before we continue */ |
2717 | /* we need to do it this way so that the callback gets called before we continue */ |
953 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
2718 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
954 | |
2719 | |
955 | child_reap (EV_A_ sw, pid, pid, status); |
2720 | child_reap (EV_A_ pid, pid, status); |
956 | if (EV_PID_HASHSIZE > 1) |
2721 | if ((EV_PID_HASHSIZE) > 1) |
957 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
2722 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
958 | } |
2723 | } |
959 | |
2724 | |
960 | #endif |
2725 | #endif |
961 | |
2726 | |
962 | /*****************************************************************************/ |
2727 | /*****************************************************************************/ |
963 | |
2728 | |
|
|
2729 | #if EV_USE_IOCP |
|
|
2730 | # include "ev_iocp.c" |
|
|
2731 | #endif |
964 | #if EV_USE_PORT |
2732 | #if EV_USE_PORT |
965 | # include "ev_port.c" |
2733 | # include "ev_port.c" |
966 | #endif |
2734 | #endif |
967 | #if EV_USE_KQUEUE |
2735 | #if EV_USE_KQUEUE |
968 | # include "ev_kqueue.c" |
2736 | # include "ev_kqueue.c" |
969 | #endif |
2737 | #endif |
|
|
2738 | #if EV_USE_LINUXAIO |
|
|
2739 | # include "ev_linuxaio.c" |
|
|
2740 | #endif |
970 | #if EV_USE_EPOLL |
2741 | #if EV_USE_EPOLL |
971 | # include "ev_epoll.c" |
2742 | # include "ev_epoll.c" |
972 | #endif |
2743 | #endif |
973 | #if EV_USE_POLL |
2744 | #if EV_USE_POLL |
974 | # include "ev_poll.c" |
2745 | # include "ev_poll.c" |
975 | #endif |
2746 | #endif |
976 | #if EV_USE_SELECT |
2747 | #if EV_USE_SELECT |
977 | # include "ev_select.c" |
2748 | # include "ev_select.c" |
978 | #endif |
2749 | #endif |
979 | |
2750 | |
980 | int |
2751 | ecb_cold int |
981 | ev_version_major (void) |
2752 | ev_version_major (void) EV_NOEXCEPT |
982 | { |
2753 | { |
983 | return EV_VERSION_MAJOR; |
2754 | return EV_VERSION_MAJOR; |
984 | } |
2755 | } |
985 | |
2756 | |
986 | int |
2757 | ecb_cold int |
987 | ev_version_minor (void) |
2758 | ev_version_minor (void) EV_NOEXCEPT |
988 | { |
2759 | { |
989 | return EV_VERSION_MINOR; |
2760 | return EV_VERSION_MINOR; |
990 | } |
2761 | } |
991 | |
2762 | |
992 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2763 | /* return true if we are running with elevated privileges and should ignore env variables */ |
993 | int inline_size |
2764 | inline_size ecb_cold int |
994 | enable_secure (void) |
2765 | enable_secure (void) |
995 | { |
2766 | { |
996 | #ifdef _WIN32 |
2767 | #ifdef _WIN32 |
997 | return 0; |
2768 | return 0; |
998 | #else |
2769 | #else |
999 | return getuid () != geteuid () |
2770 | return getuid () != geteuid () |
1000 | || getgid () != getegid (); |
2771 | || getgid () != getegid (); |
1001 | #endif |
2772 | #endif |
1002 | } |
2773 | } |
1003 | |
2774 | |
|
|
2775 | ecb_cold |
1004 | unsigned int |
2776 | unsigned int |
1005 | ev_supported_backends (void) |
2777 | ev_supported_backends (void) EV_NOEXCEPT |
1006 | { |
2778 | { |
1007 | unsigned int flags = 0; |
2779 | unsigned int flags = 0; |
1008 | |
2780 | |
1009 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2781 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1010 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
2782 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
1011 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2783 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2784 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
1012 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2785 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
1013 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2786 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
1014 | |
2787 | |
1015 | return flags; |
2788 | return flags; |
1016 | } |
2789 | } |
1017 | |
2790 | |
|
|
2791 | ecb_cold |
1018 | unsigned int |
2792 | unsigned int |
1019 | ev_recommended_backends (void) |
2793 | ev_recommended_backends (void) EV_NOEXCEPT |
1020 | { |
2794 | { |
1021 | unsigned int flags = ev_supported_backends (); |
2795 | unsigned int flags = ev_supported_backends (); |
1022 | |
2796 | |
1023 | #ifndef __NetBSD__ |
2797 | #ifndef __NetBSD__ |
1024 | /* kqueue is borked on everything but netbsd apparently */ |
2798 | /* kqueue is borked on everything but netbsd apparently */ |
1025 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
2799 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1026 | flags &= ~EVBACKEND_KQUEUE; |
2800 | flags &= ~EVBACKEND_KQUEUE; |
1027 | #endif |
2801 | #endif |
1028 | #ifdef __APPLE__ |
2802 | #ifdef __APPLE__ |
1029 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
2803 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2804 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2805 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2806 | #endif |
|
|
2807 | #ifdef __FreeBSD__ |
|
|
2808 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2809 | #endif |
|
|
2810 | |
|
|
2811 | /* TODO: linuxaio is very experimental */ |
1030 | flags &= ~EVBACKEND_POLL; |
2812 | flags &= ~EVBACKEND_LINUXAIO; |
1031 | #endif |
|
|
1032 | |
2813 | |
1033 | return flags; |
2814 | return flags; |
1034 | } |
2815 | } |
1035 | |
2816 | |
|
|
2817 | ecb_cold |
1036 | unsigned int |
2818 | unsigned int |
1037 | ev_embeddable_backends (void) |
2819 | ev_embeddable_backends (void) EV_NOEXCEPT |
1038 | { |
2820 | { |
1039 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2821 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1040 | |
2822 | |
1041 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2823 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1042 | /* please fix it and tell me how to detect the fix */ |
2824 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1043 | flags &= ~EVBACKEND_EPOLL; |
2825 | flags &= ~EVBACKEND_EPOLL; |
1044 | |
2826 | |
1045 | return flags; |
2827 | return flags; |
1046 | } |
2828 | } |
1047 | |
2829 | |
1048 | unsigned int |
2830 | unsigned int |
1049 | ev_backend (EV_P) |
2831 | ev_backend (EV_P) EV_NOEXCEPT |
1050 | { |
2832 | { |
1051 | return backend; |
2833 | return backend; |
1052 | } |
2834 | } |
1053 | |
2835 | |
|
|
2836 | #if EV_FEATURE_API |
1054 | unsigned int |
2837 | unsigned int |
1055 | ev_loop_count (EV_P) |
2838 | ev_iteration (EV_P) EV_NOEXCEPT |
1056 | { |
2839 | { |
1057 | return loop_count; |
2840 | return loop_count; |
1058 | } |
2841 | } |
1059 | |
2842 | |
|
|
2843 | unsigned int |
|
|
2844 | ev_depth (EV_P) EV_NOEXCEPT |
|
|
2845 | { |
|
|
2846 | return loop_depth; |
|
|
2847 | } |
|
|
2848 | |
1060 | void |
2849 | void |
1061 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
2850 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1062 | { |
2851 | { |
1063 | io_blocktime = interval; |
2852 | io_blocktime = interval; |
1064 | } |
2853 | } |
1065 | |
2854 | |
1066 | void |
2855 | void |
1067 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
2856 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1068 | { |
2857 | { |
1069 | timeout_blocktime = interval; |
2858 | timeout_blocktime = interval; |
1070 | } |
2859 | } |
1071 | |
2860 | |
1072 | static void noinline |
2861 | void |
|
|
2862 | ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT |
|
|
2863 | { |
|
|
2864 | userdata = data; |
|
|
2865 | } |
|
|
2866 | |
|
|
2867 | void * |
|
|
2868 | ev_userdata (EV_P) EV_NOEXCEPT |
|
|
2869 | { |
|
|
2870 | return userdata; |
|
|
2871 | } |
|
|
2872 | |
|
|
2873 | void |
|
|
2874 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT |
|
|
2875 | { |
|
|
2876 | invoke_cb = invoke_pending_cb; |
|
|
2877 | } |
|
|
2878 | |
|
|
2879 | void |
|
|
2880 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT |
|
|
2881 | { |
|
|
2882 | release_cb = release; |
|
|
2883 | acquire_cb = acquire; |
|
|
2884 | } |
|
|
2885 | #endif |
|
|
2886 | |
|
|
2887 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2888 | noinline ecb_cold |
|
|
2889 | static void |
1073 | loop_init (EV_P_ unsigned int flags) |
2890 | loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT |
1074 | { |
2891 | { |
1075 | if (!backend) |
2892 | if (!backend) |
1076 | { |
2893 | { |
|
|
2894 | origflags = flags; |
|
|
2895 | |
|
|
2896 | #if EV_USE_REALTIME |
|
|
2897 | if (!have_realtime) |
|
|
2898 | { |
|
|
2899 | struct timespec ts; |
|
|
2900 | |
|
|
2901 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2902 | have_realtime = 1; |
|
|
2903 | } |
|
|
2904 | #endif |
|
|
2905 | |
1077 | #if EV_USE_MONOTONIC |
2906 | #if EV_USE_MONOTONIC |
|
|
2907 | if (!have_monotonic) |
1078 | { |
2908 | { |
1079 | struct timespec ts; |
2909 | struct timespec ts; |
|
|
2910 | |
1080 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
2911 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1081 | have_monotonic = 1; |
2912 | have_monotonic = 1; |
1082 | } |
2913 | } |
1083 | #endif |
|
|
1084 | |
|
|
1085 | ev_rt_now = ev_time (); |
|
|
1086 | mn_now = get_clock (); |
|
|
1087 | now_floor = mn_now; |
|
|
1088 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1089 | |
|
|
1090 | io_blocktime = 0.; |
|
|
1091 | timeout_blocktime = 0.; |
|
|
1092 | backend = 0; |
|
|
1093 | backend_fd = -1; |
|
|
1094 | gotasync = 0; |
|
|
1095 | #if EV_USE_INOTIFY |
|
|
1096 | fs_fd = -2; |
|
|
1097 | #endif |
2914 | #endif |
1098 | |
2915 | |
1099 | /* pid check not overridable via env */ |
2916 | /* pid check not overridable via env */ |
1100 | #ifndef _WIN32 |
2917 | #ifndef _WIN32 |
1101 | if (flags & EVFLAG_FORKCHECK) |
2918 | if (flags & EVFLAG_FORKCHECK) |
… | |
… | |
1105 | if (!(flags & EVFLAG_NOENV) |
2922 | if (!(flags & EVFLAG_NOENV) |
1106 | && !enable_secure () |
2923 | && !enable_secure () |
1107 | && getenv ("LIBEV_FLAGS")) |
2924 | && getenv ("LIBEV_FLAGS")) |
1108 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2925 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1109 | |
2926 | |
1110 | if (!(flags & 0x0000ffffUL)) |
2927 | ev_rt_now = ev_time (); |
|
|
2928 | mn_now = get_clock (); |
|
|
2929 | now_floor = mn_now; |
|
|
2930 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2931 | #if EV_FEATURE_API |
|
|
2932 | invoke_cb = ev_invoke_pending; |
|
|
2933 | #endif |
|
|
2934 | |
|
|
2935 | io_blocktime = 0.; |
|
|
2936 | timeout_blocktime = 0.; |
|
|
2937 | backend = 0; |
|
|
2938 | backend_fd = -1; |
|
|
2939 | sig_pending = 0; |
|
|
2940 | #if EV_ASYNC_ENABLE |
|
|
2941 | async_pending = 0; |
|
|
2942 | #endif |
|
|
2943 | pipe_write_skipped = 0; |
|
|
2944 | pipe_write_wanted = 0; |
|
|
2945 | evpipe [0] = -1; |
|
|
2946 | evpipe [1] = -1; |
|
|
2947 | #if EV_USE_INOTIFY |
|
|
2948 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2949 | #endif |
|
|
2950 | #if EV_USE_SIGNALFD |
|
|
2951 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2952 | #endif |
|
|
2953 | |
|
|
2954 | if (!(flags & EVBACKEND_MASK)) |
1111 | flags |= ev_recommended_backends (); |
2955 | flags |= ev_recommended_backends (); |
1112 | |
2956 | |
|
|
2957 | #if EV_USE_IOCP |
|
|
2958 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2959 | #endif |
1113 | #if EV_USE_PORT |
2960 | #if EV_USE_PORT |
1114 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2961 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1115 | #endif |
2962 | #endif |
1116 | #if EV_USE_KQUEUE |
2963 | #if EV_USE_KQUEUE |
1117 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2964 | if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); |
|
|
2965 | #endif |
|
|
2966 | #if EV_USE_LINUXAIO |
|
|
2967 | if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); |
1118 | #endif |
2968 | #endif |
1119 | #if EV_USE_EPOLL |
2969 | #if EV_USE_EPOLL |
1120 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
2970 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
1121 | #endif |
2971 | #endif |
1122 | #if EV_USE_POLL |
2972 | #if EV_USE_POLL |
1123 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
2973 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
1124 | #endif |
2974 | #endif |
1125 | #if EV_USE_SELECT |
2975 | #if EV_USE_SELECT |
1126 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
2976 | if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags); |
1127 | #endif |
2977 | #endif |
1128 | |
2978 | |
|
|
2979 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2980 | |
|
|
2981 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1129 | ev_init (&pipeev, pipecb); |
2982 | ev_init (&pipe_w, pipecb); |
1130 | ev_set_priority (&pipeev, EV_MAXPRI); |
2983 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2984 | #endif |
1131 | } |
2985 | } |
1132 | } |
2986 | } |
1133 | |
2987 | |
1134 | static void noinline |
2988 | /* free up a loop structure */ |
|
|
2989 | ecb_cold |
|
|
2990 | void |
1135 | loop_destroy (EV_P) |
2991 | ev_loop_destroy (EV_P) |
1136 | { |
2992 | { |
1137 | int i; |
2993 | int i; |
1138 | |
2994 | |
|
|
2995 | #if EV_MULTIPLICITY |
|
|
2996 | /* mimic free (0) */ |
|
|
2997 | if (!EV_A) |
|
|
2998 | return; |
|
|
2999 | #endif |
|
|
3000 | |
|
|
3001 | #if EV_CLEANUP_ENABLE |
|
|
3002 | /* queue cleanup watchers (and execute them) */ |
|
|
3003 | if (expect_false (cleanupcnt)) |
|
|
3004 | { |
|
|
3005 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
3006 | EV_INVOKE_PENDING; |
|
|
3007 | } |
|
|
3008 | #endif |
|
|
3009 | |
|
|
3010 | #if EV_CHILD_ENABLE |
|
|
3011 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
3012 | { |
|
|
3013 | ev_ref (EV_A); /* child watcher */ |
|
|
3014 | ev_signal_stop (EV_A_ &childev); |
|
|
3015 | } |
|
|
3016 | #endif |
|
|
3017 | |
1139 | if (ev_is_active (&pipeev)) |
3018 | if (ev_is_active (&pipe_w)) |
1140 | { |
3019 | { |
1141 | ev_ref (EV_A); /* signal watcher */ |
3020 | /*ev_ref (EV_A);*/ |
1142 | ev_io_stop (EV_A_ &pipeev); |
3021 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1143 | |
3022 | |
1144 | close (evpipe [0]); evpipe [0] = 0; |
3023 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
1145 | close (evpipe [1]); evpipe [1] = 0; |
3024 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
1146 | } |
3025 | } |
|
|
3026 | |
|
|
3027 | #if EV_USE_SIGNALFD |
|
|
3028 | if (ev_is_active (&sigfd_w)) |
|
|
3029 | close (sigfd); |
|
|
3030 | #endif |
1147 | |
3031 | |
1148 | #if EV_USE_INOTIFY |
3032 | #if EV_USE_INOTIFY |
1149 | if (fs_fd >= 0) |
3033 | if (fs_fd >= 0) |
1150 | close (fs_fd); |
3034 | close (fs_fd); |
1151 | #endif |
3035 | #endif |
1152 | |
3036 | |
1153 | if (backend_fd >= 0) |
3037 | if (backend_fd >= 0) |
1154 | close (backend_fd); |
3038 | close (backend_fd); |
1155 | |
3039 | |
|
|
3040 | #if EV_USE_IOCP |
|
|
3041 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
3042 | #endif |
1156 | #if EV_USE_PORT |
3043 | #if EV_USE_PORT |
1157 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
3044 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1158 | #endif |
3045 | #endif |
1159 | #if EV_USE_KQUEUE |
3046 | #if EV_USE_KQUEUE |
1160 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
3047 | if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); |
|
|
3048 | #endif |
|
|
3049 | #if EV_USE_LINUXAIO |
|
|
3050 | if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); |
1161 | #endif |
3051 | #endif |
1162 | #if EV_USE_EPOLL |
3052 | #if EV_USE_EPOLL |
1163 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
3053 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
1164 | #endif |
3054 | #endif |
1165 | #if EV_USE_POLL |
3055 | #if EV_USE_POLL |
1166 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
3056 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
1167 | #endif |
3057 | #endif |
1168 | #if EV_USE_SELECT |
3058 | #if EV_USE_SELECT |
1169 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
3059 | if (backend == EVBACKEND_SELECT ) select_destroy (EV_A); |
1170 | #endif |
3060 | #endif |
1171 | |
3061 | |
1172 | for (i = NUMPRI; i--; ) |
3062 | for (i = NUMPRI; i--; ) |
1173 | { |
3063 | { |
1174 | array_free (pending, [i]); |
3064 | array_free (pending, [i]); |
1175 | #if EV_IDLE_ENABLE |
3065 | #if EV_IDLE_ENABLE |
1176 | array_free (idle, [i]); |
3066 | array_free (idle, [i]); |
1177 | #endif |
3067 | #endif |
1178 | } |
3068 | } |
1179 | |
3069 | |
1180 | ev_free (anfds); anfdmax = 0; |
3070 | ev_free (anfds); anfds = 0; anfdmax = 0; |
1181 | |
3071 | |
1182 | /* have to use the microsoft-never-gets-it-right macro */ |
3072 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
3073 | array_free (rfeed, EMPTY); |
1183 | array_free (fdchange, EMPTY); |
3074 | array_free (fdchange, EMPTY); |
1184 | array_free (timer, EMPTY); |
3075 | array_free (timer, EMPTY); |
1185 | #if EV_PERIODIC_ENABLE |
3076 | #if EV_PERIODIC_ENABLE |
1186 | array_free (periodic, EMPTY); |
3077 | array_free (periodic, EMPTY); |
1187 | #endif |
3078 | #endif |
1188 | #if EV_FORK_ENABLE |
3079 | #if EV_FORK_ENABLE |
1189 | array_free (fork, EMPTY); |
3080 | array_free (fork, EMPTY); |
1190 | #endif |
3081 | #endif |
|
|
3082 | #if EV_CLEANUP_ENABLE |
|
|
3083 | array_free (cleanup, EMPTY); |
|
|
3084 | #endif |
1191 | array_free (prepare, EMPTY); |
3085 | array_free (prepare, EMPTY); |
1192 | array_free (check, EMPTY); |
3086 | array_free (check, EMPTY); |
1193 | #if EV_ASYNC_ENABLE |
3087 | #if EV_ASYNC_ENABLE |
1194 | array_free (async, EMPTY); |
3088 | array_free (async, EMPTY); |
1195 | #endif |
3089 | #endif |
1196 | |
3090 | |
1197 | backend = 0; |
3091 | backend = 0; |
1198 | } |
|
|
1199 | |
3092 | |
|
|
3093 | #if EV_MULTIPLICITY |
|
|
3094 | if (ev_is_default_loop (EV_A)) |
|
|
3095 | #endif |
|
|
3096 | ev_default_loop_ptr = 0; |
|
|
3097 | #if EV_MULTIPLICITY |
|
|
3098 | else |
|
|
3099 | ev_free (EV_A); |
|
|
3100 | #endif |
|
|
3101 | } |
|
|
3102 | |
|
|
3103 | #if EV_USE_INOTIFY |
1200 | void inline_size infy_fork (EV_P); |
3104 | inline_size void infy_fork (EV_P); |
|
|
3105 | #endif |
1201 | |
3106 | |
1202 | void inline_size |
3107 | inline_size void |
1203 | loop_fork (EV_P) |
3108 | loop_fork (EV_P) |
1204 | { |
3109 | { |
1205 | #if EV_USE_PORT |
3110 | #if EV_USE_PORT |
1206 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
3111 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1207 | #endif |
3112 | #endif |
1208 | #if EV_USE_KQUEUE |
3113 | #if EV_USE_KQUEUE |
1209 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
3114 | if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); |
|
|
3115 | #endif |
|
|
3116 | #if EV_USE_LINUXAIO |
|
|
3117 | if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); |
1210 | #endif |
3118 | #endif |
1211 | #if EV_USE_EPOLL |
3119 | #if EV_USE_EPOLL |
1212 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
3120 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1213 | #endif |
3121 | #endif |
1214 | #if EV_USE_INOTIFY |
3122 | #if EV_USE_INOTIFY |
1215 | infy_fork (EV_A); |
3123 | infy_fork (EV_A); |
1216 | #endif |
3124 | #endif |
1217 | |
3125 | |
1218 | if (ev_is_active (&pipeev)) |
3126 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
3127 | if (ev_is_active (&pipe_w) && postfork != 2) |
|
|
3128 | { |
|
|
3129 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
3130 | |
|
|
3131 | ev_ref (EV_A); |
|
|
3132 | ev_io_stop (EV_A_ &pipe_w); |
|
|
3133 | |
|
|
3134 | if (evpipe [0] >= 0) |
|
|
3135 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3136 | |
|
|
3137 | evpipe_init (EV_A); |
|
|
3138 | /* iterate over everything, in case we missed something before */ |
|
|
3139 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
1219 | { |
3140 | } |
1220 | /* this "locks" the handlers against writing to the pipe */ |
3141 | #endif |
1221 | /* while we modify the fd vars */ |
3142 | |
1222 | gotsig = 1; |
3143 | postfork = 0; |
|
|
3144 | } |
|
|
3145 | |
|
|
3146 | #if EV_MULTIPLICITY |
|
|
3147 | |
|
|
3148 | ecb_cold |
|
|
3149 | struct ev_loop * |
|
|
3150 | ev_loop_new (unsigned int flags) EV_NOEXCEPT |
|
|
3151 | { |
|
|
3152 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
3153 | |
|
|
3154 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
3155 | loop_init (EV_A_ flags); |
|
|
3156 | |
|
|
3157 | if (ev_backend (EV_A)) |
|
|
3158 | return EV_A; |
|
|
3159 | |
|
|
3160 | ev_free (EV_A); |
|
|
3161 | return 0; |
|
|
3162 | } |
|
|
3163 | |
|
|
3164 | #endif /* multiplicity */ |
|
|
3165 | |
|
|
3166 | #if EV_VERIFY |
|
|
3167 | noinline ecb_cold |
|
|
3168 | static void |
|
|
3169 | verify_watcher (EV_P_ W w) |
|
|
3170 | { |
|
|
3171 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
3172 | |
|
|
3173 | if (w->pending) |
|
|
3174 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
3175 | } |
|
|
3176 | |
|
|
3177 | noinline ecb_cold |
|
|
3178 | static void |
|
|
3179 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
3180 | { |
|
|
3181 | int i; |
|
|
3182 | |
|
|
3183 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
3184 | { |
|
|
3185 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
3186 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
3187 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
3188 | |
|
|
3189 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
3190 | } |
|
|
3191 | } |
|
|
3192 | |
|
|
3193 | noinline ecb_cold |
|
|
3194 | static void |
|
|
3195 | array_verify (EV_P_ W *ws, int cnt) |
|
|
3196 | { |
|
|
3197 | while (cnt--) |
|
|
3198 | { |
|
|
3199 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
3200 | verify_watcher (EV_A_ ws [cnt]); |
|
|
3201 | } |
|
|
3202 | } |
|
|
3203 | #endif |
|
|
3204 | |
|
|
3205 | #if EV_FEATURE_API |
|
|
3206 | void ecb_cold |
|
|
3207 | ev_verify (EV_P) EV_NOEXCEPT |
|
|
3208 | { |
|
|
3209 | #if EV_VERIFY |
|
|
3210 | int i; |
|
|
3211 | WL w, w2; |
|
|
3212 | |
|
|
3213 | assert (activecnt >= -1); |
|
|
3214 | |
|
|
3215 | assert (fdchangemax >= fdchangecnt); |
|
|
3216 | for (i = 0; i < fdchangecnt; ++i) |
|
|
3217 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
3218 | |
|
|
3219 | assert (anfdmax >= 0); |
|
|
3220 | for (i = 0; i < anfdmax; ++i) |
|
|
3221 | { |
|
|
3222 | int j = 0; |
|
|
3223 | |
|
|
3224 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
3225 | { |
|
|
3226 | verify_watcher (EV_A_ (W)w); |
|
|
3227 | |
|
|
3228 | if (j++ & 1) |
|
|
3229 | { |
|
|
3230 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3231 | w2 = w2->next; |
|
|
3232 | } |
|
|
3233 | |
|
|
3234 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
3235 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
3236 | } |
|
|
3237 | } |
|
|
3238 | |
|
|
3239 | assert (timermax >= timercnt); |
|
|
3240 | verify_heap (EV_A_ timers, timercnt); |
|
|
3241 | |
|
|
3242 | #if EV_PERIODIC_ENABLE |
|
|
3243 | assert (periodicmax >= periodiccnt); |
|
|
3244 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
3245 | #endif |
|
|
3246 | |
|
|
3247 | for (i = NUMPRI; i--; ) |
|
|
3248 | { |
|
|
3249 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
3250 | #if EV_IDLE_ENABLE |
|
|
3251 | assert (idleall >= 0); |
|
|
3252 | assert (idlemax [i] >= idlecnt [i]); |
|
|
3253 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
3254 | #endif |
|
|
3255 | } |
|
|
3256 | |
|
|
3257 | #if EV_FORK_ENABLE |
|
|
3258 | assert (forkmax >= forkcnt); |
|
|
3259 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
3260 | #endif |
|
|
3261 | |
|
|
3262 | #if EV_CLEANUP_ENABLE |
|
|
3263 | assert (cleanupmax >= cleanupcnt); |
|
|
3264 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3265 | #endif |
|
|
3266 | |
1223 | #if EV_ASYNC_ENABLE |
3267 | #if EV_ASYNC_ENABLE |
1224 | gotasync = 1; |
3268 | assert (asyncmax >= asynccnt); |
|
|
3269 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
3270 | #endif |
|
|
3271 | |
|
|
3272 | #if EV_PREPARE_ENABLE |
|
|
3273 | assert (preparemax >= preparecnt); |
|
|
3274 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
3275 | #endif |
|
|
3276 | |
|
|
3277 | #if EV_CHECK_ENABLE |
|
|
3278 | assert (checkmax >= checkcnt); |
|
|
3279 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3280 | #endif |
|
|
3281 | |
|
|
3282 | # if 0 |
|
|
3283 | #if EV_CHILD_ENABLE |
|
|
3284 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
3285 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3286 | #endif |
1225 | #endif |
3287 | # endif |
1226 | |
3288 | #endif |
1227 | ev_ref (EV_A); |
|
|
1228 | ev_io_stop (EV_A_ &pipeev); |
|
|
1229 | close (evpipe [0]); |
|
|
1230 | close (evpipe [1]); |
|
|
1231 | |
|
|
1232 | evpipe_init (EV_A); |
|
|
1233 | /* now iterate over everything, in case we missed something */ |
|
|
1234 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | postfork = 0; |
|
|
1238 | } |
3289 | } |
|
|
3290 | #endif |
1239 | |
3291 | |
1240 | #if EV_MULTIPLICITY |
3292 | #if EV_MULTIPLICITY |
|
|
3293 | ecb_cold |
1241 | struct ev_loop * |
3294 | struct ev_loop * |
1242 | ev_loop_new (unsigned int flags) |
3295 | #else |
1243 | { |
3296 | int |
1244 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1245 | |
|
|
1246 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1247 | |
|
|
1248 | loop_init (EV_A_ flags); |
|
|
1249 | |
|
|
1250 | if (ev_backend (EV_A)) |
|
|
1251 | return loop; |
|
|
1252 | |
|
|
1253 | return 0; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | void |
|
|
1257 | ev_loop_destroy (EV_P) |
|
|
1258 | { |
|
|
1259 | loop_destroy (EV_A); |
|
|
1260 | ev_free (loop); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | void |
|
|
1264 | ev_loop_fork (EV_P) |
|
|
1265 | { |
|
|
1266 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1267 | } |
|
|
1268 | |
|
|
1269 | #endif |
3297 | #endif |
1270 | |
3298 | ev_default_loop (unsigned int flags) EV_NOEXCEPT |
|
|
3299 | { |
|
|
3300 | if (!ev_default_loop_ptr) |
|
|
3301 | { |
1271 | #if EV_MULTIPLICITY |
3302 | #if EV_MULTIPLICITY |
1272 | struct ev_loop * |
|
|
1273 | ev_default_loop_init (unsigned int flags) |
|
|
1274 | #else |
|
|
1275 | int |
|
|
1276 | ev_default_loop (unsigned int flags) |
|
|
1277 | #endif |
|
|
1278 | { |
|
|
1279 | if (!ev_default_loop_ptr) |
|
|
1280 | { |
|
|
1281 | #if EV_MULTIPLICITY |
|
|
1282 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
3303 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1283 | #else |
3304 | #else |
1284 | ev_default_loop_ptr = 1; |
3305 | ev_default_loop_ptr = 1; |
1285 | #endif |
3306 | #endif |
1286 | |
3307 | |
1287 | loop_init (EV_A_ flags); |
3308 | loop_init (EV_A_ flags); |
1288 | |
3309 | |
1289 | if (ev_backend (EV_A)) |
3310 | if (ev_backend (EV_A)) |
1290 | { |
3311 | { |
1291 | #ifndef _WIN32 |
3312 | #if EV_CHILD_ENABLE |
1292 | ev_signal_init (&childev, childcb, SIGCHLD); |
3313 | ev_signal_init (&childev, childcb, SIGCHLD); |
1293 | ev_set_priority (&childev, EV_MAXPRI); |
3314 | ev_set_priority (&childev, EV_MAXPRI); |
1294 | ev_signal_start (EV_A_ &childev); |
3315 | ev_signal_start (EV_A_ &childev); |
1295 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
3316 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1296 | #endif |
3317 | #endif |
… | |
… | |
1301 | |
3322 | |
1302 | return ev_default_loop_ptr; |
3323 | return ev_default_loop_ptr; |
1303 | } |
3324 | } |
1304 | |
3325 | |
1305 | void |
3326 | void |
1306 | ev_default_destroy (void) |
3327 | ev_loop_fork (EV_P) EV_NOEXCEPT |
1307 | { |
3328 | { |
1308 | #if EV_MULTIPLICITY |
3329 | postfork = 1; |
1309 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1310 | #endif |
|
|
1311 | |
|
|
1312 | #ifndef _WIN32 |
|
|
1313 | ev_ref (EV_A); /* child watcher */ |
|
|
1314 | ev_signal_stop (EV_A_ &childev); |
|
|
1315 | #endif |
|
|
1316 | |
|
|
1317 | loop_destroy (EV_A); |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | void |
|
|
1321 | ev_default_fork (void) |
|
|
1322 | { |
|
|
1323 | #if EV_MULTIPLICITY |
|
|
1324 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1325 | #endif |
|
|
1326 | |
|
|
1327 | if (backend) |
|
|
1328 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1329 | } |
3330 | } |
1330 | |
3331 | |
1331 | /*****************************************************************************/ |
3332 | /*****************************************************************************/ |
1332 | |
3333 | |
1333 | void |
3334 | void |
1334 | ev_invoke (EV_P_ void *w, int revents) |
3335 | ev_invoke (EV_P_ void *w, int revents) |
1335 | { |
3336 | { |
1336 | EV_CB_INVOKE ((W)w, revents); |
3337 | EV_CB_INVOKE ((W)w, revents); |
1337 | } |
3338 | } |
1338 | |
3339 | |
1339 | void inline_speed |
3340 | unsigned int |
1340 | call_pending (EV_P) |
3341 | ev_pending_count (EV_P) EV_NOEXCEPT |
1341 | { |
3342 | { |
1342 | int pri; |
3343 | int pri; |
|
|
3344 | unsigned int count = 0; |
1343 | |
3345 | |
1344 | for (pri = NUMPRI; pri--; ) |
3346 | for (pri = NUMPRI; pri--; ) |
|
|
3347 | count += pendingcnt [pri]; |
|
|
3348 | |
|
|
3349 | return count; |
|
|
3350 | } |
|
|
3351 | |
|
|
3352 | noinline |
|
|
3353 | void |
|
|
3354 | ev_invoke_pending (EV_P) |
|
|
3355 | { |
|
|
3356 | pendingpri = NUMPRI; |
|
|
3357 | |
|
|
3358 | do |
|
|
3359 | { |
|
|
3360 | --pendingpri; |
|
|
3361 | |
|
|
3362 | /* pendingpri possibly gets modified in the inner loop */ |
1345 | while (pendingcnt [pri]) |
3363 | while (pendingcnt [pendingpri]) |
1346 | { |
|
|
1347 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1348 | |
|
|
1349 | if (expect_true (p->w)) |
|
|
1350 | { |
|
|
1351 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1352 | |
|
|
1353 | p->w->pending = 0; |
|
|
1354 | EV_CB_INVOKE (p->w, p->events); |
|
|
1355 | } |
|
|
1356 | } |
|
|
1357 | } |
|
|
1358 | |
|
|
1359 | void inline_size |
|
|
1360 | timers_reify (EV_P) |
|
|
1361 | { |
|
|
1362 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
|
|
1363 | { |
|
|
1364 | ev_timer *w = (ev_timer *)timers [0]; |
|
|
1365 | |
|
|
1366 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1367 | |
|
|
1368 | /* first reschedule or stop timer */ |
|
|
1369 | if (w->repeat) |
|
|
1370 | { |
3364 | { |
1371 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
3365 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
1372 | |
3366 | |
1373 | ((WT)w)->at += w->repeat; |
3367 | p->w->pending = 0; |
1374 | if (((WT)w)->at < mn_now) |
3368 | EV_CB_INVOKE (p->w, p->events); |
1375 | ((WT)w)->at = mn_now; |
3369 | EV_FREQUENT_CHECK; |
1376 | |
|
|
1377 | downheap (timers, timercnt, 0); |
|
|
1378 | } |
3370 | } |
1379 | else |
|
|
1380 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1381 | |
|
|
1382 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1383 | } |
|
|
1384 | } |
|
|
1385 | |
|
|
1386 | #if EV_PERIODIC_ENABLE |
|
|
1387 | void inline_size |
|
|
1388 | periodics_reify (EV_P) |
|
|
1389 | { |
|
|
1390 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1391 | { |
3371 | } |
1392 | ev_periodic *w = (ev_periodic *)periodics [0]; |
3372 | while (pendingpri); |
1393 | |
|
|
1394 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1395 | |
|
|
1396 | /* first reschedule or stop timer */ |
|
|
1397 | if (w->reschedule_cb) |
|
|
1398 | { |
|
|
1399 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1400 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1401 | downheap (periodics, periodiccnt, 0); |
|
|
1402 | } |
|
|
1403 | else if (w->interval) |
|
|
1404 | { |
|
|
1405 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1406 | if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval; |
|
|
1407 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1408 | downheap (periodics, periodiccnt, 0); |
|
|
1409 | } |
|
|
1410 | else |
|
|
1411 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1412 | |
|
|
1413 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1414 | } |
|
|
1415 | } |
3373 | } |
1416 | |
|
|
1417 | static void noinline |
|
|
1418 | periodics_reschedule (EV_P) |
|
|
1419 | { |
|
|
1420 | int i; |
|
|
1421 | |
|
|
1422 | /* adjust periodics after time jump */ |
|
|
1423 | for (i = 0; i < periodiccnt; ++i) |
|
|
1424 | { |
|
|
1425 | ev_periodic *w = (ev_periodic *)periodics [i]; |
|
|
1426 | |
|
|
1427 | if (w->reschedule_cb) |
|
|
1428 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1429 | else if (w->interval) |
|
|
1430 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1431 | } |
|
|
1432 | |
|
|
1433 | /* now rebuild the heap */ |
|
|
1434 | for (i = periodiccnt >> 1; i--; ) |
|
|
1435 | downheap (periodics, periodiccnt, i); |
|
|
1436 | } |
|
|
1437 | #endif |
|
|
1438 | |
3374 | |
1439 | #if EV_IDLE_ENABLE |
3375 | #if EV_IDLE_ENABLE |
1440 | void inline_size |
3376 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3377 | /* only when higher priorities are idle" logic */ |
|
|
3378 | inline_size void |
1441 | idle_reify (EV_P) |
3379 | idle_reify (EV_P) |
1442 | { |
3380 | { |
1443 | if (expect_false (idleall)) |
3381 | if (expect_false (idleall)) |
1444 | { |
3382 | { |
1445 | int pri; |
3383 | int pri; |
… | |
… | |
1457 | } |
3395 | } |
1458 | } |
3396 | } |
1459 | } |
3397 | } |
1460 | #endif |
3398 | #endif |
1461 | |
3399 | |
1462 | void inline_speed |
3400 | /* make timers pending */ |
|
|
3401 | inline_size void |
|
|
3402 | timers_reify (EV_P) |
|
|
3403 | { |
|
|
3404 | EV_FREQUENT_CHECK; |
|
|
3405 | |
|
|
3406 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3407 | { |
|
|
3408 | do |
|
|
3409 | { |
|
|
3410 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3411 | |
|
|
3412 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3413 | |
|
|
3414 | /* first reschedule or stop timer */ |
|
|
3415 | if (w->repeat) |
|
|
3416 | { |
|
|
3417 | ev_at (w) += w->repeat; |
|
|
3418 | if (ev_at (w) < mn_now) |
|
|
3419 | ev_at (w) = mn_now; |
|
|
3420 | |
|
|
3421 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
3422 | |
|
|
3423 | ANHE_at_cache (timers [HEAP0]); |
|
|
3424 | downheap (timers, timercnt, HEAP0); |
|
|
3425 | } |
|
|
3426 | else |
|
|
3427 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3428 | |
|
|
3429 | EV_FREQUENT_CHECK; |
|
|
3430 | feed_reverse (EV_A_ (W)w); |
|
|
3431 | } |
|
|
3432 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3433 | |
|
|
3434 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3435 | } |
|
|
3436 | } |
|
|
3437 | |
|
|
3438 | #if EV_PERIODIC_ENABLE |
|
|
3439 | |
|
|
3440 | noinline |
|
|
3441 | static void |
|
|
3442 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3443 | { |
|
|
3444 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3445 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3446 | |
|
|
3447 | /* the above almost always errs on the low side */ |
|
|
3448 | while (at <= ev_rt_now) |
|
|
3449 | { |
|
|
3450 | ev_tstamp nat = at + w->interval; |
|
|
3451 | |
|
|
3452 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3453 | if (expect_false (nat == at)) |
|
|
3454 | { |
|
|
3455 | at = ev_rt_now; |
|
|
3456 | break; |
|
|
3457 | } |
|
|
3458 | |
|
|
3459 | at = nat; |
|
|
3460 | } |
|
|
3461 | |
|
|
3462 | ev_at (w) = at; |
|
|
3463 | } |
|
|
3464 | |
|
|
3465 | /* make periodics pending */ |
|
|
3466 | inline_size void |
|
|
3467 | periodics_reify (EV_P) |
|
|
3468 | { |
|
|
3469 | EV_FREQUENT_CHECK; |
|
|
3470 | |
|
|
3471 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3472 | { |
|
|
3473 | do |
|
|
3474 | { |
|
|
3475 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3476 | |
|
|
3477 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3478 | |
|
|
3479 | /* first reschedule or stop timer */ |
|
|
3480 | if (w->reschedule_cb) |
|
|
3481 | { |
|
|
3482 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3483 | |
|
|
3484 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3485 | |
|
|
3486 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3487 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3488 | } |
|
|
3489 | else if (w->interval) |
|
|
3490 | { |
|
|
3491 | periodic_recalc (EV_A_ w); |
|
|
3492 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3493 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3494 | } |
|
|
3495 | else |
|
|
3496 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3497 | |
|
|
3498 | EV_FREQUENT_CHECK; |
|
|
3499 | feed_reverse (EV_A_ (W)w); |
|
|
3500 | } |
|
|
3501 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3502 | |
|
|
3503 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3504 | } |
|
|
3505 | } |
|
|
3506 | |
|
|
3507 | /* simply recalculate all periodics */ |
|
|
3508 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3509 | noinline ecb_cold |
|
|
3510 | static void |
|
|
3511 | periodics_reschedule (EV_P) |
|
|
3512 | { |
|
|
3513 | int i; |
|
|
3514 | |
|
|
3515 | /* adjust periodics after time jump */ |
|
|
3516 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3517 | { |
|
|
3518 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3519 | |
|
|
3520 | if (w->reschedule_cb) |
|
|
3521 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3522 | else if (w->interval) |
|
|
3523 | periodic_recalc (EV_A_ w); |
|
|
3524 | |
|
|
3525 | ANHE_at_cache (periodics [i]); |
|
|
3526 | } |
|
|
3527 | |
|
|
3528 | reheap (periodics, periodiccnt); |
|
|
3529 | } |
|
|
3530 | #endif |
|
|
3531 | |
|
|
3532 | /* adjust all timers by a given offset */ |
|
|
3533 | noinline ecb_cold |
|
|
3534 | static void |
|
|
3535 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3536 | { |
|
|
3537 | int i; |
|
|
3538 | |
|
|
3539 | for (i = 0; i < timercnt; ++i) |
|
|
3540 | { |
|
|
3541 | ANHE *he = timers + i + HEAP0; |
|
|
3542 | ANHE_w (*he)->at += adjust; |
|
|
3543 | ANHE_at_cache (*he); |
|
|
3544 | } |
|
|
3545 | } |
|
|
3546 | |
|
|
3547 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3548 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3549 | inline_speed void |
1463 | time_update (EV_P_ ev_tstamp max_block) |
3550 | time_update (EV_P_ ev_tstamp max_block) |
1464 | { |
3551 | { |
1465 | int i; |
|
|
1466 | |
|
|
1467 | #if EV_USE_MONOTONIC |
3552 | #if EV_USE_MONOTONIC |
1468 | if (expect_true (have_monotonic)) |
3553 | if (expect_true (have_monotonic)) |
1469 | { |
3554 | { |
|
|
3555 | int i; |
1470 | ev_tstamp odiff = rtmn_diff; |
3556 | ev_tstamp odiff = rtmn_diff; |
1471 | |
3557 | |
1472 | mn_now = get_clock (); |
3558 | mn_now = get_clock (); |
1473 | |
3559 | |
1474 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
3560 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
… | |
… | |
1490 | * doesn't hurt either as we only do this on time-jumps or |
3576 | * doesn't hurt either as we only do this on time-jumps or |
1491 | * in the unlikely event of having been preempted here. |
3577 | * in the unlikely event of having been preempted here. |
1492 | */ |
3578 | */ |
1493 | for (i = 4; --i; ) |
3579 | for (i = 4; --i; ) |
1494 | { |
3580 | { |
|
|
3581 | ev_tstamp diff; |
1495 | rtmn_diff = ev_rt_now - mn_now; |
3582 | rtmn_diff = ev_rt_now - mn_now; |
1496 | |
3583 | |
1497 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
3584 | diff = odiff - rtmn_diff; |
|
|
3585 | |
|
|
3586 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
1498 | return; /* all is well */ |
3587 | return; /* all is well */ |
1499 | |
3588 | |
1500 | ev_rt_now = ev_time (); |
3589 | ev_rt_now = ev_time (); |
1501 | mn_now = get_clock (); |
3590 | mn_now = get_clock (); |
1502 | now_floor = mn_now; |
3591 | now_floor = mn_now; |
1503 | } |
3592 | } |
1504 | |
3593 | |
|
|
3594 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3595 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1505 | # if EV_PERIODIC_ENABLE |
3596 | # if EV_PERIODIC_ENABLE |
1506 | periodics_reschedule (EV_A); |
3597 | periodics_reschedule (EV_A); |
1507 | # endif |
3598 | # endif |
1508 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1509 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1510 | } |
3599 | } |
1511 | else |
3600 | else |
1512 | #endif |
3601 | #endif |
1513 | { |
3602 | { |
1514 | ev_rt_now = ev_time (); |
3603 | ev_rt_now = ev_time (); |
1515 | |
3604 | |
1516 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
3605 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
1517 | { |
3606 | { |
|
|
3607 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3608 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
1518 | #if EV_PERIODIC_ENABLE |
3609 | #if EV_PERIODIC_ENABLE |
1519 | periodics_reschedule (EV_A); |
3610 | periodics_reschedule (EV_A); |
1520 | #endif |
3611 | #endif |
1521 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1522 | for (i = 0; i < timercnt; ++i) |
|
|
1523 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1524 | } |
3612 | } |
1525 | |
3613 | |
1526 | mn_now = ev_rt_now; |
3614 | mn_now = ev_rt_now; |
1527 | } |
3615 | } |
1528 | } |
3616 | } |
1529 | |
3617 | |
1530 | void |
3618 | int |
1531 | ev_ref (EV_P) |
|
|
1532 | { |
|
|
1533 | ++activecnt; |
|
|
1534 | } |
|
|
1535 | |
|
|
1536 | void |
|
|
1537 | ev_unref (EV_P) |
|
|
1538 | { |
|
|
1539 | --activecnt; |
|
|
1540 | } |
|
|
1541 | |
|
|
1542 | static int loop_done; |
|
|
1543 | |
|
|
1544 | void |
|
|
1545 | ev_loop (EV_P_ int flags) |
3619 | ev_run (EV_P_ int flags) |
1546 | { |
3620 | { |
1547 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
3621 | #if EV_FEATURE_API |
1548 | ? EVUNLOOP_ONE |
3622 | ++loop_depth; |
1549 | : EVUNLOOP_CANCEL; |
3623 | #endif |
1550 | |
3624 | |
|
|
3625 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
3626 | |
|
|
3627 | loop_done = EVBREAK_CANCEL; |
|
|
3628 | |
1551 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
3629 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
1552 | |
3630 | |
1553 | do |
3631 | do |
1554 | { |
3632 | { |
|
|
3633 | #if EV_VERIFY >= 2 |
|
|
3634 | ev_verify (EV_A); |
|
|
3635 | #endif |
|
|
3636 | |
1555 | #ifndef _WIN32 |
3637 | #ifndef _WIN32 |
1556 | if (expect_false (curpid)) /* penalise the forking check even more */ |
3638 | if (expect_false (curpid)) /* penalise the forking check even more */ |
1557 | if (expect_false (getpid () != curpid)) |
3639 | if (expect_false (getpid () != curpid)) |
1558 | { |
3640 | { |
1559 | curpid = getpid (); |
3641 | curpid = getpid (); |
… | |
… | |
1565 | /* we might have forked, so queue fork handlers */ |
3647 | /* we might have forked, so queue fork handlers */ |
1566 | if (expect_false (postfork)) |
3648 | if (expect_false (postfork)) |
1567 | if (forkcnt) |
3649 | if (forkcnt) |
1568 | { |
3650 | { |
1569 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
3651 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1570 | call_pending (EV_A); |
3652 | EV_INVOKE_PENDING; |
1571 | } |
3653 | } |
1572 | #endif |
3654 | #endif |
1573 | |
3655 | |
|
|
3656 | #if EV_PREPARE_ENABLE |
1574 | /* queue prepare watchers (and execute them) */ |
3657 | /* queue prepare watchers (and execute them) */ |
1575 | if (expect_false (preparecnt)) |
3658 | if (expect_false (preparecnt)) |
1576 | { |
3659 | { |
1577 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
3660 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1578 | call_pending (EV_A); |
3661 | EV_INVOKE_PENDING; |
1579 | } |
3662 | } |
|
|
3663 | #endif |
1580 | |
3664 | |
1581 | if (expect_false (!activecnt)) |
3665 | if (expect_false (loop_done)) |
1582 | break; |
3666 | break; |
1583 | |
3667 | |
1584 | /* we might have forked, so reify kernel state if necessary */ |
3668 | /* we might have forked, so reify kernel state if necessary */ |
1585 | if (expect_false (postfork)) |
3669 | if (expect_false (postfork)) |
1586 | loop_fork (EV_A); |
3670 | loop_fork (EV_A); |
… | |
… | |
1591 | /* calculate blocking time */ |
3675 | /* calculate blocking time */ |
1592 | { |
3676 | { |
1593 | ev_tstamp waittime = 0.; |
3677 | ev_tstamp waittime = 0.; |
1594 | ev_tstamp sleeptime = 0.; |
3678 | ev_tstamp sleeptime = 0.; |
1595 | |
3679 | |
|
|
3680 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3681 | ev_tstamp prev_mn_now = mn_now; |
|
|
3682 | |
|
|
3683 | /* update time to cancel out callback processing overhead */ |
|
|
3684 | time_update (EV_A_ 1e100); |
|
|
3685 | |
|
|
3686 | /* from now on, we want a pipe-wake-up */ |
|
|
3687 | pipe_write_wanted = 1; |
|
|
3688 | |
|
|
3689 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3690 | |
1596 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
3691 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
1597 | { |
3692 | { |
1598 | /* update time to cancel out callback processing overhead */ |
|
|
1599 | time_update (EV_A_ 1e100); |
|
|
1600 | |
|
|
1601 | waittime = MAX_BLOCKTIME; |
3693 | waittime = MAX_BLOCKTIME; |
1602 | |
3694 | |
1603 | if (timercnt) |
3695 | if (timercnt) |
1604 | { |
3696 | { |
1605 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
3697 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
1606 | if (waittime > to) waittime = to; |
3698 | if (waittime > to) waittime = to; |
1607 | } |
3699 | } |
1608 | |
3700 | |
1609 | #if EV_PERIODIC_ENABLE |
3701 | #if EV_PERIODIC_ENABLE |
1610 | if (periodiccnt) |
3702 | if (periodiccnt) |
1611 | { |
3703 | { |
1612 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
3704 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
1613 | if (waittime > to) waittime = to; |
3705 | if (waittime > to) waittime = to; |
1614 | } |
3706 | } |
1615 | #endif |
3707 | #endif |
1616 | |
3708 | |
|
|
3709 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
1617 | if (expect_false (waittime < timeout_blocktime)) |
3710 | if (expect_false (waittime < timeout_blocktime)) |
1618 | waittime = timeout_blocktime; |
3711 | waittime = timeout_blocktime; |
1619 | |
3712 | |
1620 | sleeptime = waittime - backend_fudge; |
3713 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3714 | /* to pass a minimum nonzero value to the backend */ |
|
|
3715 | if (expect_false (waittime < backend_mintime)) |
|
|
3716 | waittime = backend_mintime; |
1621 | |
3717 | |
|
|
3718 | /* extra check because io_blocktime is commonly 0 */ |
1622 | if (expect_true (sleeptime > io_blocktime)) |
3719 | if (expect_false (io_blocktime)) |
1623 | sleeptime = io_blocktime; |
|
|
1624 | |
|
|
1625 | if (sleeptime) |
|
|
1626 | { |
3720 | { |
|
|
3721 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3722 | |
|
|
3723 | if (sleeptime > waittime - backend_mintime) |
|
|
3724 | sleeptime = waittime - backend_mintime; |
|
|
3725 | |
|
|
3726 | if (expect_true (sleeptime > 0.)) |
|
|
3727 | { |
1627 | ev_sleep (sleeptime); |
3728 | ev_sleep (sleeptime); |
1628 | waittime -= sleeptime; |
3729 | waittime -= sleeptime; |
|
|
3730 | } |
1629 | } |
3731 | } |
1630 | } |
3732 | } |
1631 | |
3733 | |
|
|
3734 | #if EV_FEATURE_API |
1632 | ++loop_count; |
3735 | ++loop_count; |
|
|
3736 | #endif |
|
|
3737 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
1633 | backend_poll (EV_A_ waittime); |
3738 | backend_poll (EV_A_ waittime); |
|
|
3739 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3740 | |
|
|
3741 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3742 | |
|
|
3743 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3744 | if (pipe_write_skipped) |
|
|
3745 | { |
|
|
3746 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3747 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3748 | } |
|
|
3749 | |
1634 | |
3750 | |
1635 | /* update ev_rt_now, do magic */ |
3751 | /* update ev_rt_now, do magic */ |
1636 | time_update (EV_A_ waittime + sleeptime); |
3752 | time_update (EV_A_ waittime + sleeptime); |
1637 | } |
3753 | } |
1638 | |
3754 | |
… | |
… | |
1645 | #if EV_IDLE_ENABLE |
3761 | #if EV_IDLE_ENABLE |
1646 | /* queue idle watchers unless other events are pending */ |
3762 | /* queue idle watchers unless other events are pending */ |
1647 | idle_reify (EV_A); |
3763 | idle_reify (EV_A); |
1648 | #endif |
3764 | #endif |
1649 | |
3765 | |
|
|
3766 | #if EV_CHECK_ENABLE |
1650 | /* queue check watchers, to be executed first */ |
3767 | /* queue check watchers, to be executed first */ |
1651 | if (expect_false (checkcnt)) |
3768 | if (expect_false (checkcnt)) |
1652 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3769 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3770 | #endif |
1653 | |
3771 | |
1654 | call_pending (EV_A); |
3772 | EV_INVOKE_PENDING; |
1655 | |
|
|
1656 | } |
3773 | } |
1657 | while (expect_true (activecnt && !loop_done)); |
3774 | while (expect_true ( |
|
|
3775 | activecnt |
|
|
3776 | && !loop_done |
|
|
3777 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3778 | )); |
1658 | |
3779 | |
1659 | if (loop_done == EVUNLOOP_ONE) |
3780 | if (loop_done == EVBREAK_ONE) |
1660 | loop_done = EVUNLOOP_CANCEL; |
3781 | loop_done = EVBREAK_CANCEL; |
1661 | } |
|
|
1662 | |
3782 | |
|
|
3783 | #if EV_FEATURE_API |
|
|
3784 | --loop_depth; |
|
|
3785 | #endif |
|
|
3786 | |
|
|
3787 | return activecnt; |
|
|
3788 | } |
|
|
3789 | |
1663 | void |
3790 | void |
1664 | ev_unloop (EV_P_ int how) |
3791 | ev_break (EV_P_ int how) EV_NOEXCEPT |
1665 | { |
3792 | { |
1666 | loop_done = how; |
3793 | loop_done = how; |
1667 | } |
3794 | } |
1668 | |
3795 | |
|
|
3796 | void |
|
|
3797 | ev_ref (EV_P) EV_NOEXCEPT |
|
|
3798 | { |
|
|
3799 | ++activecnt; |
|
|
3800 | } |
|
|
3801 | |
|
|
3802 | void |
|
|
3803 | ev_unref (EV_P) EV_NOEXCEPT |
|
|
3804 | { |
|
|
3805 | --activecnt; |
|
|
3806 | } |
|
|
3807 | |
|
|
3808 | void |
|
|
3809 | ev_now_update (EV_P) EV_NOEXCEPT |
|
|
3810 | { |
|
|
3811 | time_update (EV_A_ 1e100); |
|
|
3812 | } |
|
|
3813 | |
|
|
3814 | void |
|
|
3815 | ev_suspend (EV_P) EV_NOEXCEPT |
|
|
3816 | { |
|
|
3817 | ev_now_update (EV_A); |
|
|
3818 | } |
|
|
3819 | |
|
|
3820 | void |
|
|
3821 | ev_resume (EV_P) EV_NOEXCEPT |
|
|
3822 | { |
|
|
3823 | ev_tstamp mn_prev = mn_now; |
|
|
3824 | |
|
|
3825 | ev_now_update (EV_A); |
|
|
3826 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3827 | #if EV_PERIODIC_ENABLE |
|
|
3828 | /* TODO: really do this? */ |
|
|
3829 | periodics_reschedule (EV_A); |
|
|
3830 | #endif |
|
|
3831 | } |
|
|
3832 | |
1669 | /*****************************************************************************/ |
3833 | /*****************************************************************************/ |
|
|
3834 | /* singly-linked list management, used when the expected list length is short */ |
1670 | |
3835 | |
1671 | void inline_size |
3836 | inline_size void |
1672 | wlist_add (WL *head, WL elem) |
3837 | wlist_add (WL *head, WL elem) |
1673 | { |
3838 | { |
1674 | elem->next = *head; |
3839 | elem->next = *head; |
1675 | *head = elem; |
3840 | *head = elem; |
1676 | } |
3841 | } |
1677 | |
3842 | |
1678 | void inline_size |
3843 | inline_size void |
1679 | wlist_del (WL *head, WL elem) |
3844 | wlist_del (WL *head, WL elem) |
1680 | { |
3845 | { |
1681 | while (*head) |
3846 | while (*head) |
1682 | { |
3847 | { |
1683 | if (*head == elem) |
3848 | if (expect_true (*head == elem)) |
1684 | { |
3849 | { |
1685 | *head = elem->next; |
3850 | *head = elem->next; |
1686 | return; |
3851 | break; |
1687 | } |
3852 | } |
1688 | |
3853 | |
1689 | head = &(*head)->next; |
3854 | head = &(*head)->next; |
1690 | } |
3855 | } |
1691 | } |
3856 | } |
1692 | |
3857 | |
1693 | void inline_speed |
3858 | /* internal, faster, version of ev_clear_pending */ |
|
|
3859 | inline_speed void |
1694 | clear_pending (EV_P_ W w) |
3860 | clear_pending (EV_P_ W w) |
1695 | { |
3861 | { |
1696 | if (w->pending) |
3862 | if (w->pending) |
1697 | { |
3863 | { |
1698 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
3864 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1699 | w->pending = 0; |
3865 | w->pending = 0; |
1700 | } |
3866 | } |
1701 | } |
3867 | } |
1702 | |
3868 | |
1703 | int |
3869 | int |
1704 | ev_clear_pending (EV_P_ void *w) |
3870 | ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT |
1705 | { |
3871 | { |
1706 | W w_ = (W)w; |
3872 | W w_ = (W)w; |
1707 | int pending = w_->pending; |
3873 | int pending = w_->pending; |
1708 | |
3874 | |
1709 | if (expect_true (pending)) |
3875 | if (expect_true (pending)) |
1710 | { |
3876 | { |
1711 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
3877 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3878 | p->w = (W)&pending_w; |
1712 | w_->pending = 0; |
3879 | w_->pending = 0; |
1713 | p->w = 0; |
|
|
1714 | return p->events; |
3880 | return p->events; |
1715 | } |
3881 | } |
1716 | else |
3882 | else |
1717 | return 0; |
3883 | return 0; |
1718 | } |
3884 | } |
1719 | |
3885 | |
1720 | void inline_size |
3886 | inline_size void |
1721 | pri_adjust (EV_P_ W w) |
3887 | pri_adjust (EV_P_ W w) |
1722 | { |
3888 | { |
1723 | int pri = w->priority; |
3889 | int pri = ev_priority (w); |
1724 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
3890 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
1725 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
3891 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
1726 | w->priority = pri; |
3892 | ev_set_priority (w, pri); |
1727 | } |
3893 | } |
1728 | |
3894 | |
1729 | void inline_speed |
3895 | inline_speed void |
1730 | ev_start (EV_P_ W w, int active) |
3896 | ev_start (EV_P_ W w, int active) |
1731 | { |
3897 | { |
1732 | pri_adjust (EV_A_ w); |
3898 | pri_adjust (EV_A_ w); |
1733 | w->active = active; |
3899 | w->active = active; |
1734 | ev_ref (EV_A); |
3900 | ev_ref (EV_A); |
1735 | } |
3901 | } |
1736 | |
3902 | |
1737 | void inline_size |
3903 | inline_size void |
1738 | ev_stop (EV_P_ W w) |
3904 | ev_stop (EV_P_ W w) |
1739 | { |
3905 | { |
1740 | ev_unref (EV_A); |
3906 | ev_unref (EV_A); |
1741 | w->active = 0; |
3907 | w->active = 0; |
1742 | } |
3908 | } |
1743 | |
3909 | |
1744 | /*****************************************************************************/ |
3910 | /*****************************************************************************/ |
1745 | |
3911 | |
1746 | void noinline |
3912 | noinline |
|
|
3913 | void |
1747 | ev_io_start (EV_P_ ev_io *w) |
3914 | ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT |
1748 | { |
3915 | { |
1749 | int fd = w->fd; |
3916 | int fd = w->fd; |
1750 | |
3917 | |
1751 | if (expect_false (ev_is_active (w))) |
3918 | if (expect_false (ev_is_active (w))) |
1752 | return; |
3919 | return; |
1753 | |
3920 | |
1754 | assert (("ev_io_start called with negative fd", fd >= 0)); |
3921 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
3922 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
3923 | |
|
|
3924 | EV_FREQUENT_CHECK; |
1755 | |
3925 | |
1756 | ev_start (EV_A_ (W)w, 1); |
3926 | ev_start (EV_A_ (W)w, 1); |
1757 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
3927 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); |
1758 | wlist_add (&anfds[fd].head, (WL)w); |
3928 | wlist_add (&anfds[fd].head, (WL)w); |
1759 | |
3929 | |
|
|
3930 | /* common bug, apparently */ |
|
|
3931 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
3932 | |
1760 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
3933 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1761 | w->events &= ~EV_IOFDSET; |
3934 | w->events &= ~EV__IOFDSET; |
1762 | } |
|
|
1763 | |
3935 | |
|
|
3936 | EV_FREQUENT_CHECK; |
|
|
3937 | } |
|
|
3938 | |
1764 | void noinline |
3939 | noinline |
|
|
3940 | void |
1765 | ev_io_stop (EV_P_ ev_io *w) |
3941 | ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT |
1766 | { |
3942 | { |
1767 | clear_pending (EV_A_ (W)w); |
3943 | clear_pending (EV_A_ (W)w); |
1768 | if (expect_false (!ev_is_active (w))) |
3944 | if (expect_false (!ev_is_active (w))) |
1769 | return; |
3945 | return; |
1770 | |
3946 | |
1771 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
3947 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3948 | |
|
|
3949 | EV_FREQUENT_CHECK; |
1772 | |
3950 | |
1773 | wlist_del (&anfds[w->fd].head, (WL)w); |
3951 | wlist_del (&anfds[w->fd].head, (WL)w); |
1774 | ev_stop (EV_A_ (W)w); |
3952 | ev_stop (EV_A_ (W)w); |
1775 | |
3953 | |
1776 | fd_change (EV_A_ w->fd, 1); |
3954 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
1777 | } |
|
|
1778 | |
3955 | |
|
|
3956 | EV_FREQUENT_CHECK; |
|
|
3957 | } |
|
|
3958 | |
1779 | void noinline |
3959 | noinline |
|
|
3960 | void |
1780 | ev_timer_start (EV_P_ ev_timer *w) |
3961 | ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT |
1781 | { |
3962 | { |
1782 | if (expect_false (ev_is_active (w))) |
3963 | if (expect_false (ev_is_active (w))) |
1783 | return; |
3964 | return; |
1784 | |
3965 | |
1785 | ((WT)w)->at += mn_now; |
3966 | ev_at (w) += mn_now; |
1786 | |
3967 | |
1787 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
3968 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1788 | |
3969 | |
|
|
3970 | EV_FREQUENT_CHECK; |
|
|
3971 | |
|
|
3972 | ++timercnt; |
1789 | ev_start (EV_A_ (W)w, ++timercnt); |
3973 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1790 | array_needsize (WT, timers, timermax, timercnt, EMPTY2); |
3974 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit); |
1791 | timers [timercnt - 1] = (WT)w; |
3975 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1792 | upheap (timers, timercnt - 1); |
3976 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3977 | upheap (timers, ev_active (w)); |
1793 | |
3978 | |
|
|
3979 | EV_FREQUENT_CHECK; |
|
|
3980 | |
1794 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
3981 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
1795 | } |
3982 | } |
1796 | |
3983 | |
1797 | void noinline |
3984 | noinline |
|
|
3985 | void |
1798 | ev_timer_stop (EV_P_ ev_timer *w) |
3986 | ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT |
1799 | { |
3987 | { |
1800 | clear_pending (EV_A_ (W)w); |
3988 | clear_pending (EV_A_ (W)w); |
1801 | if (expect_false (!ev_is_active (w))) |
3989 | if (expect_false (!ev_is_active (w))) |
1802 | return; |
3990 | return; |
1803 | |
3991 | |
1804 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); |
3992 | EV_FREQUENT_CHECK; |
1805 | |
3993 | |
1806 | { |
3994 | { |
1807 | int active = ((W)w)->active; |
3995 | int active = ev_active (w); |
1808 | |
3996 | |
|
|
3997 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3998 | |
|
|
3999 | --timercnt; |
|
|
4000 | |
1809 | if (expect_true (--active < --timercnt)) |
4001 | if (expect_true (active < timercnt + HEAP0)) |
1810 | { |
4002 | { |
1811 | timers [active] = timers [timercnt]; |
4003 | timers [active] = timers [timercnt + HEAP0]; |
1812 | adjustheap (timers, timercnt, active); |
4004 | adjustheap (timers, timercnt, active); |
1813 | } |
4005 | } |
1814 | } |
4006 | } |
1815 | |
4007 | |
1816 | ((WT)w)->at -= mn_now; |
4008 | ev_at (w) -= mn_now; |
1817 | |
4009 | |
1818 | ev_stop (EV_A_ (W)w); |
4010 | ev_stop (EV_A_ (W)w); |
1819 | } |
|
|
1820 | |
4011 | |
|
|
4012 | EV_FREQUENT_CHECK; |
|
|
4013 | } |
|
|
4014 | |
1821 | void noinline |
4015 | noinline |
|
|
4016 | void |
1822 | ev_timer_again (EV_P_ ev_timer *w) |
4017 | ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT |
1823 | { |
4018 | { |
|
|
4019 | EV_FREQUENT_CHECK; |
|
|
4020 | |
|
|
4021 | clear_pending (EV_A_ (W)w); |
|
|
4022 | |
1824 | if (ev_is_active (w)) |
4023 | if (ev_is_active (w)) |
1825 | { |
4024 | { |
1826 | if (w->repeat) |
4025 | if (w->repeat) |
1827 | { |
4026 | { |
1828 | ((WT)w)->at = mn_now + w->repeat; |
4027 | ev_at (w) = mn_now + w->repeat; |
|
|
4028 | ANHE_at_cache (timers [ev_active (w)]); |
1829 | adjustheap (timers, timercnt, ((W)w)->active - 1); |
4029 | adjustheap (timers, timercnt, ev_active (w)); |
1830 | } |
4030 | } |
1831 | else |
4031 | else |
1832 | ev_timer_stop (EV_A_ w); |
4032 | ev_timer_stop (EV_A_ w); |
1833 | } |
4033 | } |
1834 | else if (w->repeat) |
4034 | else if (w->repeat) |
1835 | { |
4035 | { |
1836 | w->at = w->repeat; |
4036 | ev_at (w) = w->repeat; |
1837 | ev_timer_start (EV_A_ w); |
4037 | ev_timer_start (EV_A_ w); |
1838 | } |
4038 | } |
|
|
4039 | |
|
|
4040 | EV_FREQUENT_CHECK; |
|
|
4041 | } |
|
|
4042 | |
|
|
4043 | ev_tstamp |
|
|
4044 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4045 | { |
|
|
4046 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
1839 | } |
4047 | } |
1840 | |
4048 | |
1841 | #if EV_PERIODIC_ENABLE |
4049 | #if EV_PERIODIC_ENABLE |
1842 | void noinline |
4050 | noinline |
|
|
4051 | void |
1843 | ev_periodic_start (EV_P_ ev_periodic *w) |
4052 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
1844 | { |
4053 | { |
1845 | if (expect_false (ev_is_active (w))) |
4054 | if (expect_false (ev_is_active (w))) |
1846 | return; |
4055 | return; |
1847 | |
4056 | |
1848 | if (w->reschedule_cb) |
4057 | if (w->reschedule_cb) |
1849 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
4058 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1850 | else if (w->interval) |
4059 | else if (w->interval) |
1851 | { |
4060 | { |
1852 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
4061 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1853 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
4062 | periodic_recalc (EV_A_ w); |
1854 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1855 | } |
4063 | } |
1856 | else |
4064 | else |
1857 | ((WT)w)->at = w->offset; |
4065 | ev_at (w) = w->offset; |
1858 | |
4066 | |
|
|
4067 | EV_FREQUENT_CHECK; |
|
|
4068 | |
|
|
4069 | ++periodiccnt; |
1859 | ev_start (EV_A_ (W)w, ++periodiccnt); |
4070 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1860 | array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); |
4071 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit); |
1861 | periodics [periodiccnt - 1] = (WT)w; |
4072 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1862 | upheap (periodics, periodiccnt - 1); |
4073 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
4074 | upheap (periodics, ev_active (w)); |
1863 | |
4075 | |
|
|
4076 | EV_FREQUENT_CHECK; |
|
|
4077 | |
1864 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
4078 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1865 | } |
4079 | } |
1866 | |
4080 | |
1867 | void noinline |
4081 | noinline |
|
|
4082 | void |
1868 | ev_periodic_stop (EV_P_ ev_periodic *w) |
4083 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT |
1869 | { |
4084 | { |
1870 | clear_pending (EV_A_ (W)w); |
4085 | clear_pending (EV_A_ (W)w); |
1871 | if (expect_false (!ev_is_active (w))) |
4086 | if (expect_false (!ev_is_active (w))) |
1872 | return; |
4087 | return; |
1873 | |
4088 | |
1874 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); |
4089 | EV_FREQUENT_CHECK; |
1875 | |
4090 | |
1876 | { |
4091 | { |
1877 | int active = ((W)w)->active; |
4092 | int active = ev_active (w); |
1878 | |
4093 | |
|
|
4094 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
4095 | |
|
|
4096 | --periodiccnt; |
|
|
4097 | |
1879 | if (expect_true (--active < --periodiccnt)) |
4098 | if (expect_true (active < periodiccnt + HEAP0)) |
1880 | { |
4099 | { |
1881 | periodics [active] = periodics [periodiccnt]; |
4100 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1882 | adjustheap (periodics, periodiccnt, active); |
4101 | adjustheap (periodics, periodiccnt, active); |
1883 | } |
4102 | } |
1884 | } |
4103 | } |
1885 | |
4104 | |
1886 | ev_stop (EV_A_ (W)w); |
4105 | ev_stop (EV_A_ (W)w); |
1887 | } |
|
|
1888 | |
4106 | |
|
|
4107 | EV_FREQUENT_CHECK; |
|
|
4108 | } |
|
|
4109 | |
1889 | void noinline |
4110 | noinline |
|
|
4111 | void |
1890 | ev_periodic_again (EV_P_ ev_periodic *w) |
4112 | ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT |
1891 | { |
4113 | { |
1892 | /* TODO: use adjustheap and recalculation */ |
4114 | /* TODO: use adjustheap and recalculation */ |
1893 | ev_periodic_stop (EV_A_ w); |
4115 | ev_periodic_stop (EV_A_ w); |
1894 | ev_periodic_start (EV_A_ w); |
4116 | ev_periodic_start (EV_A_ w); |
1895 | } |
4117 | } |
… | |
… | |
1897 | |
4119 | |
1898 | #ifndef SA_RESTART |
4120 | #ifndef SA_RESTART |
1899 | # define SA_RESTART 0 |
4121 | # define SA_RESTART 0 |
1900 | #endif |
4122 | #endif |
1901 | |
4123 | |
|
|
4124 | #if EV_SIGNAL_ENABLE |
|
|
4125 | |
1902 | void noinline |
4126 | noinline |
|
|
4127 | void |
1903 | ev_signal_start (EV_P_ ev_signal *w) |
4128 | ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT |
1904 | { |
4129 | { |
1905 | #if EV_MULTIPLICITY |
|
|
1906 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1907 | #endif |
|
|
1908 | if (expect_false (ev_is_active (w))) |
4130 | if (expect_false (ev_is_active (w))) |
1909 | return; |
4131 | return; |
1910 | |
4132 | |
1911 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
4133 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
1912 | |
4134 | |
1913 | evpipe_init (EV_A); |
4135 | #if EV_MULTIPLICITY |
|
|
4136 | assert (("libev: a signal must not be attached to two different loops", |
|
|
4137 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
1914 | |
4138 | |
|
|
4139 | signals [w->signum - 1].loop = EV_A; |
|
|
4140 | ECB_MEMORY_FENCE_RELEASE; |
|
|
4141 | #endif |
|
|
4142 | |
|
|
4143 | EV_FREQUENT_CHECK; |
|
|
4144 | |
|
|
4145 | #if EV_USE_SIGNALFD |
|
|
4146 | if (sigfd == -2) |
1915 | { |
4147 | { |
1916 | #ifndef _WIN32 |
4148 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
1917 | sigset_t full, prev; |
4149 | if (sigfd < 0 && errno == EINVAL) |
1918 | sigfillset (&full); |
4150 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
1919 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
1920 | #endif |
|
|
1921 | |
4151 | |
1922 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
4152 | if (sigfd >= 0) |
|
|
4153 | { |
|
|
4154 | fd_intern (sigfd); /* doing it twice will not hurt */ |
1923 | |
4155 | |
1924 | #ifndef _WIN32 |
4156 | sigemptyset (&sigfd_set); |
1925 | sigprocmask (SIG_SETMASK, &prev, 0); |
4157 | |
1926 | #endif |
4158 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
4159 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
4160 | ev_io_start (EV_A_ &sigfd_w); |
|
|
4161 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
4162 | } |
1927 | } |
4163 | } |
|
|
4164 | |
|
|
4165 | if (sigfd >= 0) |
|
|
4166 | { |
|
|
4167 | /* TODO: check .head */ |
|
|
4168 | sigaddset (&sigfd_set, w->signum); |
|
|
4169 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
4170 | |
|
|
4171 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4172 | } |
|
|
4173 | #endif |
1928 | |
4174 | |
1929 | ev_start (EV_A_ (W)w, 1); |
4175 | ev_start (EV_A_ (W)w, 1); |
1930 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
4176 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1931 | |
4177 | |
1932 | if (!((WL)w)->next) |
4178 | if (!((WL)w)->next) |
|
|
4179 | # if EV_USE_SIGNALFD |
|
|
4180 | if (sigfd < 0) /*TODO*/ |
|
|
4181 | # endif |
1933 | { |
4182 | { |
1934 | #if _WIN32 |
4183 | # ifdef _WIN32 |
|
|
4184 | evpipe_init (EV_A); |
|
|
4185 | |
1935 | signal (w->signum, sighandler); |
4186 | signal (w->signum, ev_sighandler); |
1936 | #else |
4187 | # else |
1937 | struct sigaction sa; |
4188 | struct sigaction sa; |
|
|
4189 | |
|
|
4190 | evpipe_init (EV_A); |
|
|
4191 | |
1938 | sa.sa_handler = sighandler; |
4192 | sa.sa_handler = ev_sighandler; |
1939 | sigfillset (&sa.sa_mask); |
4193 | sigfillset (&sa.sa_mask); |
1940 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
4194 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1941 | sigaction (w->signum, &sa, 0); |
4195 | sigaction (w->signum, &sa, 0); |
|
|
4196 | |
|
|
4197 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4198 | { |
|
|
4199 | sigemptyset (&sa.sa_mask); |
|
|
4200 | sigaddset (&sa.sa_mask, w->signum); |
|
|
4201 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
4202 | } |
1942 | #endif |
4203 | #endif |
1943 | } |
4204 | } |
1944 | } |
|
|
1945 | |
4205 | |
|
|
4206 | EV_FREQUENT_CHECK; |
|
|
4207 | } |
|
|
4208 | |
1946 | void noinline |
4209 | noinline |
|
|
4210 | void |
1947 | ev_signal_stop (EV_P_ ev_signal *w) |
4211 | ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT |
1948 | { |
4212 | { |
1949 | clear_pending (EV_A_ (W)w); |
4213 | clear_pending (EV_A_ (W)w); |
1950 | if (expect_false (!ev_is_active (w))) |
4214 | if (expect_false (!ev_is_active (w))) |
1951 | return; |
4215 | return; |
1952 | |
4216 | |
|
|
4217 | EV_FREQUENT_CHECK; |
|
|
4218 | |
1953 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
4219 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
1954 | ev_stop (EV_A_ (W)w); |
4220 | ev_stop (EV_A_ (W)w); |
1955 | |
4221 | |
1956 | if (!signals [w->signum - 1].head) |
4222 | if (!signals [w->signum - 1].head) |
1957 | signal (w->signum, SIG_DFL); |
4223 | { |
1958 | } |
|
|
1959 | |
|
|
1960 | void |
|
|
1961 | ev_child_start (EV_P_ ev_child *w) |
|
|
1962 | { |
|
|
1963 | #if EV_MULTIPLICITY |
4224 | #if EV_MULTIPLICITY |
|
|
4225 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
4226 | #endif |
|
|
4227 | #if EV_USE_SIGNALFD |
|
|
4228 | if (sigfd >= 0) |
|
|
4229 | { |
|
|
4230 | sigset_t ss; |
|
|
4231 | |
|
|
4232 | sigemptyset (&ss); |
|
|
4233 | sigaddset (&ss, w->signum); |
|
|
4234 | sigdelset (&sigfd_set, w->signum); |
|
|
4235 | |
|
|
4236 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4237 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
4238 | } |
|
|
4239 | else |
|
|
4240 | #endif |
|
|
4241 | signal (w->signum, SIG_DFL); |
|
|
4242 | } |
|
|
4243 | |
|
|
4244 | EV_FREQUENT_CHECK; |
|
|
4245 | } |
|
|
4246 | |
|
|
4247 | #endif |
|
|
4248 | |
|
|
4249 | #if EV_CHILD_ENABLE |
|
|
4250 | |
|
|
4251 | void |
|
|
4252 | ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT |
|
|
4253 | { |
|
|
4254 | #if EV_MULTIPLICITY |
1964 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
4255 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1965 | #endif |
4256 | #endif |
1966 | if (expect_false (ev_is_active (w))) |
4257 | if (expect_false (ev_is_active (w))) |
1967 | return; |
4258 | return; |
1968 | |
4259 | |
|
|
4260 | EV_FREQUENT_CHECK; |
|
|
4261 | |
1969 | ev_start (EV_A_ (W)w, 1); |
4262 | ev_start (EV_A_ (W)w, 1); |
1970 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
4263 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1971 | } |
|
|
1972 | |
4264 | |
|
|
4265 | EV_FREQUENT_CHECK; |
|
|
4266 | } |
|
|
4267 | |
1973 | void |
4268 | void |
1974 | ev_child_stop (EV_P_ ev_child *w) |
4269 | ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT |
1975 | { |
4270 | { |
1976 | clear_pending (EV_A_ (W)w); |
4271 | clear_pending (EV_A_ (W)w); |
1977 | if (expect_false (!ev_is_active (w))) |
4272 | if (expect_false (!ev_is_active (w))) |
1978 | return; |
4273 | return; |
1979 | |
4274 | |
|
|
4275 | EV_FREQUENT_CHECK; |
|
|
4276 | |
1980 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
4277 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1981 | ev_stop (EV_A_ (W)w); |
4278 | ev_stop (EV_A_ (W)w); |
|
|
4279 | |
|
|
4280 | EV_FREQUENT_CHECK; |
1982 | } |
4281 | } |
|
|
4282 | |
|
|
4283 | #endif |
1983 | |
4284 | |
1984 | #if EV_STAT_ENABLE |
4285 | #if EV_STAT_ENABLE |
1985 | |
4286 | |
1986 | # ifdef _WIN32 |
4287 | # ifdef _WIN32 |
1987 | # undef lstat |
4288 | # undef lstat |
1988 | # define lstat(a,b) _stati64 (a,b) |
4289 | # define lstat(a,b) _stati64 (a,b) |
1989 | # endif |
4290 | # endif |
1990 | |
4291 | |
1991 | #define DEF_STAT_INTERVAL 5.0074891 |
4292 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
4293 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
1992 | #define MIN_STAT_INTERVAL 0.1074891 |
4294 | #define MIN_STAT_INTERVAL 0.1074891 |
1993 | |
4295 | |
1994 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
4296 | noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
1995 | |
4297 | |
1996 | #if EV_USE_INOTIFY |
4298 | #if EV_USE_INOTIFY |
1997 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
1998 | |
4299 | |
1999 | static void noinline |
4300 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4301 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
4302 | |
|
|
4303 | noinline |
|
|
4304 | static void |
2000 | infy_add (EV_P_ ev_stat *w) |
4305 | infy_add (EV_P_ ev_stat *w) |
2001 | { |
4306 | { |
2002 | 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); |
4307 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4308 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4309 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4310 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
2003 | |
4311 | |
2004 | if (w->wd < 0) |
4312 | if (w->wd >= 0) |
|
|
4313 | { |
|
|
4314 | struct statfs sfs; |
|
|
4315 | |
|
|
4316 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4317 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4318 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4319 | |
|
|
4320 | if (!fs_2625) |
|
|
4321 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4322 | else if (!statfs (w->path, &sfs) |
|
|
4323 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4324 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4325 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4326 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4327 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4328 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4329 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4330 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4331 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4332 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4333 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4334 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4335 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4336 | else |
|
|
4337 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2005 | { |
4338 | } |
2006 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
4339 | else |
|
|
4340 | { |
|
|
4341 | /* can't use inotify, continue to stat */ |
|
|
4342 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2007 | |
4343 | |
2008 | /* monitor some parent directory for speedup hints */ |
4344 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
4345 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4346 | /* but an efficiency issue only */ |
2009 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
4347 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2010 | { |
4348 | { |
2011 | char path [4096]; |
4349 | char path [4096]; |
2012 | strcpy (path, w->path); |
4350 | strcpy (path, w->path); |
2013 | |
4351 | |
… | |
… | |
2016 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
4354 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2017 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
4355 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2018 | |
4356 | |
2019 | char *pend = strrchr (path, '/'); |
4357 | char *pend = strrchr (path, '/'); |
2020 | |
4358 | |
2021 | if (!pend) |
4359 | if (!pend || pend == path) |
2022 | break; /* whoops, no '/', complain to your admin */ |
4360 | break; |
2023 | |
4361 | |
2024 | *pend = 0; |
4362 | *pend = 0; |
2025 | w->wd = inotify_add_watch (fs_fd, path, mask); |
4363 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2026 | } |
4364 | } |
2027 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
4365 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2028 | } |
4366 | } |
2029 | } |
4367 | } |
2030 | else |
|
|
2031 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2032 | |
4368 | |
2033 | if (w->wd >= 0) |
4369 | if (w->wd >= 0) |
2034 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
4370 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
2035 | } |
|
|
2036 | |
4371 | |
2037 | static void noinline |
4372 | /* now re-arm timer, if required */ |
|
|
4373 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4374 | ev_timer_again (EV_A_ &w->timer); |
|
|
4375 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4376 | } |
|
|
4377 | |
|
|
4378 | noinline |
|
|
4379 | static void |
2038 | infy_del (EV_P_ ev_stat *w) |
4380 | infy_del (EV_P_ ev_stat *w) |
2039 | { |
4381 | { |
2040 | int slot; |
4382 | int slot; |
2041 | int wd = w->wd; |
4383 | int wd = w->wd; |
2042 | |
4384 | |
2043 | if (wd < 0) |
4385 | if (wd < 0) |
2044 | return; |
4386 | return; |
2045 | |
4387 | |
2046 | w->wd = -2; |
4388 | w->wd = -2; |
2047 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
4389 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
2048 | wlist_del (&fs_hash [slot].head, (WL)w); |
4390 | wlist_del (&fs_hash [slot].head, (WL)w); |
2049 | |
4391 | |
2050 | /* remove this watcher, if others are watching it, they will rearm */ |
4392 | /* remove this watcher, if others are watching it, they will rearm */ |
2051 | inotify_rm_watch (fs_fd, wd); |
4393 | inotify_rm_watch (fs_fd, wd); |
2052 | } |
4394 | } |
2053 | |
4395 | |
2054 | static void noinline |
4396 | noinline |
|
|
4397 | static void |
2055 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
4398 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
2056 | { |
4399 | { |
2057 | if (slot < 0) |
4400 | if (slot < 0) |
2058 | /* overflow, need to check for all hahs slots */ |
4401 | /* overflow, need to check for all hash slots */ |
2059 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4402 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
2060 | infy_wd (EV_A_ slot, wd, ev); |
4403 | infy_wd (EV_A_ slot, wd, ev); |
2061 | else |
4404 | else |
2062 | { |
4405 | { |
2063 | WL w_; |
4406 | WL w_; |
2064 | |
4407 | |
2065 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
4408 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
2066 | { |
4409 | { |
2067 | ev_stat *w = (ev_stat *)w_; |
4410 | ev_stat *w = (ev_stat *)w_; |
2068 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
4411 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
2069 | |
4412 | |
2070 | if (w->wd == wd || wd == -1) |
4413 | if (w->wd == wd || wd == -1) |
2071 | { |
4414 | { |
2072 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
4415 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2073 | { |
4416 | { |
|
|
4417 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
2074 | w->wd = -1; |
4418 | w->wd = -1; |
2075 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4419 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2076 | } |
4420 | } |
2077 | |
4421 | |
2078 | stat_timer_cb (EV_A_ &w->timer, 0); |
4422 | stat_timer_cb (EV_A_ &w->timer, 0); |
… | |
… | |
2083 | |
4427 | |
2084 | static void |
4428 | static void |
2085 | infy_cb (EV_P_ ev_io *w, int revents) |
4429 | infy_cb (EV_P_ ev_io *w, int revents) |
2086 | { |
4430 | { |
2087 | char buf [EV_INOTIFY_BUFSIZE]; |
4431 | char buf [EV_INOTIFY_BUFSIZE]; |
2088 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2089 | int ofs; |
4432 | int ofs; |
2090 | int len = read (fs_fd, buf, sizeof (buf)); |
4433 | int len = read (fs_fd, buf, sizeof (buf)); |
2091 | |
4434 | |
2092 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
4435 | for (ofs = 0; ofs < len; ) |
|
|
4436 | { |
|
|
4437 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2093 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
4438 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4439 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4440 | } |
2094 | } |
4441 | } |
2095 | |
4442 | |
2096 | void inline_size |
4443 | inline_size ecb_cold |
|
|
4444 | void |
|
|
4445 | ev_check_2625 (EV_P) |
|
|
4446 | { |
|
|
4447 | /* kernels < 2.6.25 are borked |
|
|
4448 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4449 | */ |
|
|
4450 | if (ev_linux_version () < 0x020619) |
|
|
4451 | return; |
|
|
4452 | |
|
|
4453 | fs_2625 = 1; |
|
|
4454 | } |
|
|
4455 | |
|
|
4456 | inline_size int |
|
|
4457 | infy_newfd (void) |
|
|
4458 | { |
|
|
4459 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4460 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4461 | if (fd >= 0) |
|
|
4462 | return fd; |
|
|
4463 | #endif |
|
|
4464 | return inotify_init (); |
|
|
4465 | } |
|
|
4466 | |
|
|
4467 | inline_size void |
2097 | infy_init (EV_P) |
4468 | infy_init (EV_P) |
2098 | { |
4469 | { |
2099 | if (fs_fd != -2) |
4470 | if (fs_fd != -2) |
2100 | return; |
4471 | return; |
2101 | |
4472 | |
|
|
4473 | fs_fd = -1; |
|
|
4474 | |
|
|
4475 | ev_check_2625 (EV_A); |
|
|
4476 | |
2102 | fs_fd = inotify_init (); |
4477 | fs_fd = infy_newfd (); |
2103 | |
4478 | |
2104 | if (fs_fd >= 0) |
4479 | if (fs_fd >= 0) |
2105 | { |
4480 | { |
|
|
4481 | fd_intern (fs_fd); |
2106 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
4482 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2107 | ev_set_priority (&fs_w, EV_MAXPRI); |
4483 | ev_set_priority (&fs_w, EV_MAXPRI); |
2108 | ev_io_start (EV_A_ &fs_w); |
4484 | ev_io_start (EV_A_ &fs_w); |
|
|
4485 | ev_unref (EV_A); |
2109 | } |
4486 | } |
2110 | } |
4487 | } |
2111 | |
4488 | |
2112 | void inline_size |
4489 | inline_size void |
2113 | infy_fork (EV_P) |
4490 | infy_fork (EV_P) |
2114 | { |
4491 | { |
2115 | int slot; |
4492 | int slot; |
2116 | |
4493 | |
2117 | if (fs_fd < 0) |
4494 | if (fs_fd < 0) |
2118 | return; |
4495 | return; |
2119 | |
4496 | |
|
|
4497 | ev_ref (EV_A); |
|
|
4498 | ev_io_stop (EV_A_ &fs_w); |
2120 | close (fs_fd); |
4499 | close (fs_fd); |
2121 | fs_fd = inotify_init (); |
4500 | fs_fd = infy_newfd (); |
2122 | |
4501 | |
|
|
4502 | if (fs_fd >= 0) |
|
|
4503 | { |
|
|
4504 | fd_intern (fs_fd); |
|
|
4505 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4506 | ev_io_start (EV_A_ &fs_w); |
|
|
4507 | ev_unref (EV_A); |
|
|
4508 | } |
|
|
4509 | |
2123 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4510 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
2124 | { |
4511 | { |
2125 | WL w_ = fs_hash [slot].head; |
4512 | WL w_ = fs_hash [slot].head; |
2126 | fs_hash [slot].head = 0; |
4513 | fs_hash [slot].head = 0; |
2127 | |
4514 | |
2128 | while (w_) |
4515 | while (w_) |
… | |
… | |
2133 | w->wd = -1; |
4520 | w->wd = -1; |
2134 | |
4521 | |
2135 | if (fs_fd >= 0) |
4522 | if (fs_fd >= 0) |
2136 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4523 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2137 | else |
4524 | else |
|
|
4525 | { |
|
|
4526 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4527 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2138 | ev_timer_start (EV_A_ &w->timer); |
4528 | ev_timer_again (EV_A_ &w->timer); |
|
|
4529 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4530 | } |
2139 | } |
4531 | } |
2140 | |
|
|
2141 | } |
4532 | } |
2142 | } |
4533 | } |
2143 | |
4534 | |
2144 | #endif |
4535 | #endif |
2145 | |
4536 | |
|
|
4537 | #ifdef _WIN32 |
|
|
4538 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4539 | #else |
|
|
4540 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
4541 | #endif |
|
|
4542 | |
2146 | void |
4543 | void |
2147 | ev_stat_stat (EV_P_ ev_stat *w) |
4544 | ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT |
2148 | { |
4545 | { |
2149 | if (lstat (w->path, &w->attr) < 0) |
4546 | if (lstat (w->path, &w->attr) < 0) |
2150 | w->attr.st_nlink = 0; |
4547 | w->attr.st_nlink = 0; |
2151 | else if (!w->attr.st_nlink) |
4548 | else if (!w->attr.st_nlink) |
2152 | w->attr.st_nlink = 1; |
4549 | w->attr.st_nlink = 1; |
2153 | } |
4550 | } |
2154 | |
4551 | |
2155 | static void noinline |
4552 | noinline |
|
|
4553 | static void |
2156 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
4554 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
2157 | { |
4555 | { |
2158 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
4556 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
2159 | |
4557 | |
2160 | /* we copy this here each the time so that */ |
4558 | ev_statdata prev = w->attr; |
2161 | /* prev has the old value when the callback gets invoked */ |
|
|
2162 | w->prev = w->attr; |
|
|
2163 | ev_stat_stat (EV_A_ w); |
4559 | ev_stat_stat (EV_A_ w); |
2164 | |
4560 | |
2165 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
4561 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
2166 | if ( |
4562 | if ( |
2167 | w->prev.st_dev != w->attr.st_dev |
4563 | prev.st_dev != w->attr.st_dev |
2168 | || w->prev.st_ino != w->attr.st_ino |
4564 | || prev.st_ino != w->attr.st_ino |
2169 | || w->prev.st_mode != w->attr.st_mode |
4565 | || prev.st_mode != w->attr.st_mode |
2170 | || w->prev.st_nlink != w->attr.st_nlink |
4566 | || prev.st_nlink != w->attr.st_nlink |
2171 | || w->prev.st_uid != w->attr.st_uid |
4567 | || prev.st_uid != w->attr.st_uid |
2172 | || w->prev.st_gid != w->attr.st_gid |
4568 | || prev.st_gid != w->attr.st_gid |
2173 | || w->prev.st_rdev != w->attr.st_rdev |
4569 | || prev.st_rdev != w->attr.st_rdev |
2174 | || w->prev.st_size != w->attr.st_size |
4570 | || prev.st_size != w->attr.st_size |
2175 | || w->prev.st_atime != w->attr.st_atime |
4571 | || prev.st_atime != w->attr.st_atime |
2176 | || w->prev.st_mtime != w->attr.st_mtime |
4572 | || prev.st_mtime != w->attr.st_mtime |
2177 | || w->prev.st_ctime != w->attr.st_ctime |
4573 | || prev.st_ctime != w->attr.st_ctime |
2178 | ) { |
4574 | ) { |
|
|
4575 | /* we only update w->prev on actual differences */ |
|
|
4576 | /* in case we test more often than invoke the callback, */ |
|
|
4577 | /* to ensure that prev is always different to attr */ |
|
|
4578 | w->prev = prev; |
|
|
4579 | |
2179 | #if EV_USE_INOTIFY |
4580 | #if EV_USE_INOTIFY |
|
|
4581 | if (fs_fd >= 0) |
|
|
4582 | { |
2180 | infy_del (EV_A_ w); |
4583 | infy_del (EV_A_ w); |
2181 | infy_add (EV_A_ w); |
4584 | infy_add (EV_A_ w); |
2182 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
4585 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4586 | } |
2183 | #endif |
4587 | #endif |
2184 | |
4588 | |
2185 | ev_feed_event (EV_A_ w, EV_STAT); |
4589 | ev_feed_event (EV_A_ w, EV_STAT); |
2186 | } |
4590 | } |
2187 | } |
4591 | } |
2188 | |
4592 | |
2189 | void |
4593 | void |
2190 | ev_stat_start (EV_P_ ev_stat *w) |
4594 | ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT |
2191 | { |
4595 | { |
2192 | if (expect_false (ev_is_active (w))) |
4596 | if (expect_false (ev_is_active (w))) |
2193 | return; |
4597 | return; |
2194 | |
4598 | |
2195 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2196 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2197 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2198 | |
|
|
2199 | ev_stat_stat (EV_A_ w); |
4599 | ev_stat_stat (EV_A_ w); |
2200 | |
4600 | |
|
|
4601 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
2201 | if (w->interval < MIN_STAT_INTERVAL) |
4602 | w->interval = MIN_STAT_INTERVAL; |
2202 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2203 | |
4603 | |
2204 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
4604 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
2205 | ev_set_priority (&w->timer, ev_priority (w)); |
4605 | ev_set_priority (&w->timer, ev_priority (w)); |
2206 | |
4606 | |
2207 | #if EV_USE_INOTIFY |
4607 | #if EV_USE_INOTIFY |
2208 | infy_init (EV_A); |
4608 | infy_init (EV_A); |
2209 | |
4609 | |
2210 | if (fs_fd >= 0) |
4610 | if (fs_fd >= 0) |
2211 | infy_add (EV_A_ w); |
4611 | infy_add (EV_A_ w); |
2212 | else |
4612 | else |
2213 | #endif |
4613 | #endif |
|
|
4614 | { |
2214 | ev_timer_start (EV_A_ &w->timer); |
4615 | ev_timer_again (EV_A_ &w->timer); |
|
|
4616 | ev_unref (EV_A); |
|
|
4617 | } |
2215 | |
4618 | |
2216 | ev_start (EV_A_ (W)w, 1); |
4619 | ev_start (EV_A_ (W)w, 1); |
2217 | } |
|
|
2218 | |
4620 | |
|
|
4621 | EV_FREQUENT_CHECK; |
|
|
4622 | } |
|
|
4623 | |
2219 | void |
4624 | void |
2220 | ev_stat_stop (EV_P_ ev_stat *w) |
4625 | ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT |
2221 | { |
4626 | { |
2222 | clear_pending (EV_A_ (W)w); |
4627 | clear_pending (EV_A_ (W)w); |
2223 | if (expect_false (!ev_is_active (w))) |
4628 | if (expect_false (!ev_is_active (w))) |
2224 | return; |
4629 | return; |
2225 | |
4630 | |
|
|
4631 | EV_FREQUENT_CHECK; |
|
|
4632 | |
2226 | #if EV_USE_INOTIFY |
4633 | #if EV_USE_INOTIFY |
2227 | infy_del (EV_A_ w); |
4634 | infy_del (EV_A_ w); |
2228 | #endif |
4635 | #endif |
|
|
4636 | |
|
|
4637 | if (ev_is_active (&w->timer)) |
|
|
4638 | { |
|
|
4639 | ev_ref (EV_A); |
2229 | ev_timer_stop (EV_A_ &w->timer); |
4640 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4641 | } |
2230 | |
4642 | |
2231 | ev_stop (EV_A_ (W)w); |
4643 | ev_stop (EV_A_ (W)w); |
|
|
4644 | |
|
|
4645 | EV_FREQUENT_CHECK; |
2232 | } |
4646 | } |
2233 | #endif |
4647 | #endif |
2234 | |
4648 | |
2235 | #if EV_IDLE_ENABLE |
4649 | #if EV_IDLE_ENABLE |
2236 | void |
4650 | void |
2237 | ev_idle_start (EV_P_ ev_idle *w) |
4651 | ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT |
2238 | { |
4652 | { |
2239 | if (expect_false (ev_is_active (w))) |
4653 | if (expect_false (ev_is_active (w))) |
2240 | return; |
4654 | return; |
2241 | |
4655 | |
2242 | pri_adjust (EV_A_ (W)w); |
4656 | pri_adjust (EV_A_ (W)w); |
2243 | |
4657 | |
|
|
4658 | EV_FREQUENT_CHECK; |
|
|
4659 | |
2244 | { |
4660 | { |
2245 | int active = ++idlecnt [ABSPRI (w)]; |
4661 | int active = ++idlecnt [ABSPRI (w)]; |
2246 | |
4662 | |
2247 | ++idleall; |
4663 | ++idleall; |
2248 | ev_start (EV_A_ (W)w, active); |
4664 | ev_start (EV_A_ (W)w, active); |
2249 | |
4665 | |
2250 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
4666 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit); |
2251 | idles [ABSPRI (w)][active - 1] = w; |
4667 | idles [ABSPRI (w)][active - 1] = w; |
2252 | } |
4668 | } |
2253 | } |
|
|
2254 | |
4669 | |
|
|
4670 | EV_FREQUENT_CHECK; |
|
|
4671 | } |
|
|
4672 | |
2255 | void |
4673 | void |
2256 | ev_idle_stop (EV_P_ ev_idle *w) |
4674 | ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT |
2257 | { |
4675 | { |
2258 | clear_pending (EV_A_ (W)w); |
4676 | clear_pending (EV_A_ (W)w); |
2259 | if (expect_false (!ev_is_active (w))) |
4677 | if (expect_false (!ev_is_active (w))) |
2260 | return; |
4678 | return; |
2261 | |
4679 | |
|
|
4680 | EV_FREQUENT_CHECK; |
|
|
4681 | |
2262 | { |
4682 | { |
2263 | int active = ((W)w)->active; |
4683 | int active = ev_active (w); |
2264 | |
4684 | |
2265 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
4685 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2266 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
4686 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
2267 | |
4687 | |
2268 | ev_stop (EV_A_ (W)w); |
4688 | ev_stop (EV_A_ (W)w); |
2269 | --idleall; |
4689 | --idleall; |
2270 | } |
4690 | } |
2271 | } |
|
|
2272 | #endif |
|
|
2273 | |
4691 | |
|
|
4692 | EV_FREQUENT_CHECK; |
|
|
4693 | } |
|
|
4694 | #endif |
|
|
4695 | |
|
|
4696 | #if EV_PREPARE_ENABLE |
2274 | void |
4697 | void |
2275 | ev_prepare_start (EV_P_ ev_prepare *w) |
4698 | ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT |
2276 | { |
4699 | { |
2277 | if (expect_false (ev_is_active (w))) |
4700 | if (expect_false (ev_is_active (w))) |
2278 | return; |
4701 | return; |
2279 | |
4702 | |
|
|
4703 | EV_FREQUENT_CHECK; |
|
|
4704 | |
2280 | ev_start (EV_A_ (W)w, ++preparecnt); |
4705 | ev_start (EV_A_ (W)w, ++preparecnt); |
2281 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
4706 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit); |
2282 | prepares [preparecnt - 1] = w; |
4707 | prepares [preparecnt - 1] = w; |
2283 | } |
|
|
2284 | |
4708 | |
|
|
4709 | EV_FREQUENT_CHECK; |
|
|
4710 | } |
|
|
4711 | |
2285 | void |
4712 | void |
2286 | ev_prepare_stop (EV_P_ ev_prepare *w) |
4713 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT |
2287 | { |
4714 | { |
2288 | clear_pending (EV_A_ (W)w); |
4715 | clear_pending (EV_A_ (W)w); |
2289 | if (expect_false (!ev_is_active (w))) |
4716 | if (expect_false (!ev_is_active (w))) |
2290 | return; |
4717 | return; |
2291 | |
4718 | |
|
|
4719 | EV_FREQUENT_CHECK; |
|
|
4720 | |
2292 | { |
4721 | { |
2293 | int active = ((W)w)->active; |
4722 | int active = ev_active (w); |
|
|
4723 | |
2294 | prepares [active - 1] = prepares [--preparecnt]; |
4724 | prepares [active - 1] = prepares [--preparecnt]; |
2295 | ((W)prepares [active - 1])->active = active; |
4725 | ev_active (prepares [active - 1]) = active; |
2296 | } |
4726 | } |
2297 | |
4727 | |
2298 | ev_stop (EV_A_ (W)w); |
4728 | ev_stop (EV_A_ (W)w); |
2299 | } |
|
|
2300 | |
4729 | |
|
|
4730 | EV_FREQUENT_CHECK; |
|
|
4731 | } |
|
|
4732 | #endif |
|
|
4733 | |
|
|
4734 | #if EV_CHECK_ENABLE |
2301 | void |
4735 | void |
2302 | ev_check_start (EV_P_ ev_check *w) |
4736 | ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT |
2303 | { |
4737 | { |
2304 | if (expect_false (ev_is_active (w))) |
4738 | if (expect_false (ev_is_active (w))) |
2305 | return; |
4739 | return; |
2306 | |
4740 | |
|
|
4741 | EV_FREQUENT_CHECK; |
|
|
4742 | |
2307 | ev_start (EV_A_ (W)w, ++checkcnt); |
4743 | ev_start (EV_A_ (W)w, ++checkcnt); |
2308 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
4744 | array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit); |
2309 | checks [checkcnt - 1] = w; |
4745 | checks [checkcnt - 1] = w; |
2310 | } |
|
|
2311 | |
4746 | |
|
|
4747 | EV_FREQUENT_CHECK; |
|
|
4748 | } |
|
|
4749 | |
2312 | void |
4750 | void |
2313 | ev_check_stop (EV_P_ ev_check *w) |
4751 | ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT |
2314 | { |
4752 | { |
2315 | clear_pending (EV_A_ (W)w); |
4753 | clear_pending (EV_A_ (W)w); |
2316 | if (expect_false (!ev_is_active (w))) |
4754 | if (expect_false (!ev_is_active (w))) |
2317 | return; |
4755 | return; |
2318 | |
4756 | |
|
|
4757 | EV_FREQUENT_CHECK; |
|
|
4758 | |
2319 | { |
4759 | { |
2320 | int active = ((W)w)->active; |
4760 | int active = ev_active (w); |
|
|
4761 | |
2321 | checks [active - 1] = checks [--checkcnt]; |
4762 | checks [active - 1] = checks [--checkcnt]; |
2322 | ((W)checks [active - 1])->active = active; |
4763 | ev_active (checks [active - 1]) = active; |
2323 | } |
4764 | } |
2324 | |
4765 | |
2325 | ev_stop (EV_A_ (W)w); |
4766 | ev_stop (EV_A_ (W)w); |
|
|
4767 | |
|
|
4768 | EV_FREQUENT_CHECK; |
2326 | } |
4769 | } |
|
|
4770 | #endif |
2327 | |
4771 | |
2328 | #if EV_EMBED_ENABLE |
4772 | #if EV_EMBED_ENABLE |
2329 | void noinline |
4773 | noinline |
|
|
4774 | void |
2330 | ev_embed_sweep (EV_P_ ev_embed *w) |
4775 | ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT |
2331 | { |
4776 | { |
2332 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4777 | ev_run (w->other, EVRUN_NOWAIT); |
2333 | } |
4778 | } |
2334 | |
4779 | |
2335 | static void |
4780 | static void |
2336 | embed_io_cb (EV_P_ ev_io *io, int revents) |
4781 | embed_io_cb (EV_P_ ev_io *io, int revents) |
2337 | { |
4782 | { |
2338 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
4783 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2339 | |
4784 | |
2340 | if (ev_cb (w)) |
4785 | if (ev_cb (w)) |
2341 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
4786 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2342 | else |
4787 | else |
2343 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4788 | ev_run (w->other, EVRUN_NOWAIT); |
2344 | } |
4789 | } |
2345 | |
4790 | |
2346 | static void |
4791 | static void |
2347 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
4792 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
2348 | { |
4793 | { |
2349 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
4794 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
2350 | |
4795 | |
2351 | { |
4796 | { |
2352 | struct ev_loop *loop = w->other; |
4797 | EV_P = w->other; |
2353 | |
4798 | |
2354 | while (fdchangecnt) |
4799 | while (fdchangecnt) |
2355 | { |
4800 | { |
2356 | fd_reify (EV_A); |
4801 | fd_reify (EV_A); |
2357 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
4802 | ev_run (EV_A_ EVRUN_NOWAIT); |
2358 | } |
4803 | } |
2359 | } |
4804 | } |
|
|
4805 | } |
|
|
4806 | |
|
|
4807 | static void |
|
|
4808 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
4809 | { |
|
|
4810 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
4811 | |
|
|
4812 | ev_embed_stop (EV_A_ w); |
|
|
4813 | |
|
|
4814 | { |
|
|
4815 | EV_P = w->other; |
|
|
4816 | |
|
|
4817 | ev_loop_fork (EV_A); |
|
|
4818 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4819 | } |
|
|
4820 | |
|
|
4821 | ev_embed_start (EV_A_ w); |
2360 | } |
4822 | } |
2361 | |
4823 | |
2362 | #if 0 |
4824 | #if 0 |
2363 | static void |
4825 | static void |
2364 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
4826 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
… | |
… | |
2366 | ev_idle_stop (EV_A_ idle); |
4828 | ev_idle_stop (EV_A_ idle); |
2367 | } |
4829 | } |
2368 | #endif |
4830 | #endif |
2369 | |
4831 | |
2370 | void |
4832 | void |
2371 | ev_embed_start (EV_P_ ev_embed *w) |
4833 | ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT |
2372 | { |
4834 | { |
2373 | if (expect_false (ev_is_active (w))) |
4835 | if (expect_false (ev_is_active (w))) |
2374 | return; |
4836 | return; |
2375 | |
4837 | |
2376 | { |
4838 | { |
2377 | struct ev_loop *loop = w->other; |
4839 | EV_P = w->other; |
2378 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
4840 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2379 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
4841 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2380 | } |
4842 | } |
|
|
4843 | |
|
|
4844 | EV_FREQUENT_CHECK; |
2381 | |
4845 | |
2382 | ev_set_priority (&w->io, ev_priority (w)); |
4846 | ev_set_priority (&w->io, ev_priority (w)); |
2383 | ev_io_start (EV_A_ &w->io); |
4847 | ev_io_start (EV_A_ &w->io); |
2384 | |
4848 | |
2385 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
4849 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
2386 | ev_set_priority (&w->prepare, EV_MINPRI); |
4850 | ev_set_priority (&w->prepare, EV_MINPRI); |
2387 | ev_prepare_start (EV_A_ &w->prepare); |
4851 | ev_prepare_start (EV_A_ &w->prepare); |
2388 | |
4852 | |
|
|
4853 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4854 | ev_fork_start (EV_A_ &w->fork); |
|
|
4855 | |
2389 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
4856 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
2390 | |
4857 | |
2391 | ev_start (EV_A_ (W)w, 1); |
4858 | ev_start (EV_A_ (W)w, 1); |
2392 | } |
|
|
2393 | |
4859 | |
|
|
4860 | EV_FREQUENT_CHECK; |
|
|
4861 | } |
|
|
4862 | |
2394 | void |
4863 | void |
2395 | ev_embed_stop (EV_P_ ev_embed *w) |
4864 | ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT |
2396 | { |
4865 | { |
2397 | clear_pending (EV_A_ (W)w); |
4866 | clear_pending (EV_A_ (W)w); |
2398 | if (expect_false (!ev_is_active (w))) |
4867 | if (expect_false (!ev_is_active (w))) |
2399 | return; |
4868 | return; |
2400 | |
4869 | |
|
|
4870 | EV_FREQUENT_CHECK; |
|
|
4871 | |
2401 | ev_io_stop (EV_A_ &w->io); |
4872 | ev_io_stop (EV_A_ &w->io); |
2402 | ev_prepare_stop (EV_A_ &w->prepare); |
4873 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4874 | ev_fork_stop (EV_A_ &w->fork); |
2403 | |
4875 | |
2404 | ev_stop (EV_A_ (W)w); |
4876 | ev_stop (EV_A_ (W)w); |
|
|
4877 | |
|
|
4878 | EV_FREQUENT_CHECK; |
2405 | } |
4879 | } |
2406 | #endif |
4880 | #endif |
2407 | |
4881 | |
2408 | #if EV_FORK_ENABLE |
4882 | #if EV_FORK_ENABLE |
2409 | void |
4883 | void |
2410 | ev_fork_start (EV_P_ ev_fork *w) |
4884 | ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT |
2411 | { |
4885 | { |
2412 | if (expect_false (ev_is_active (w))) |
4886 | if (expect_false (ev_is_active (w))) |
2413 | return; |
4887 | return; |
2414 | |
4888 | |
|
|
4889 | EV_FREQUENT_CHECK; |
|
|
4890 | |
2415 | ev_start (EV_A_ (W)w, ++forkcnt); |
4891 | ev_start (EV_A_ (W)w, ++forkcnt); |
2416 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
4892 | array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit); |
2417 | forks [forkcnt - 1] = w; |
4893 | forks [forkcnt - 1] = w; |
2418 | } |
|
|
2419 | |
4894 | |
|
|
4895 | EV_FREQUENT_CHECK; |
|
|
4896 | } |
|
|
4897 | |
2420 | void |
4898 | void |
2421 | ev_fork_stop (EV_P_ ev_fork *w) |
4899 | ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT |
2422 | { |
4900 | { |
2423 | clear_pending (EV_A_ (W)w); |
4901 | clear_pending (EV_A_ (W)w); |
2424 | if (expect_false (!ev_is_active (w))) |
4902 | if (expect_false (!ev_is_active (w))) |
2425 | return; |
4903 | return; |
2426 | |
4904 | |
|
|
4905 | EV_FREQUENT_CHECK; |
|
|
4906 | |
2427 | { |
4907 | { |
2428 | int active = ((W)w)->active; |
4908 | int active = ev_active (w); |
|
|
4909 | |
2429 | forks [active - 1] = forks [--forkcnt]; |
4910 | forks [active - 1] = forks [--forkcnt]; |
2430 | ((W)forks [active - 1])->active = active; |
4911 | ev_active (forks [active - 1]) = active; |
2431 | } |
4912 | } |
2432 | |
4913 | |
2433 | ev_stop (EV_A_ (W)w); |
4914 | ev_stop (EV_A_ (W)w); |
2434 | } |
|
|
2435 | #endif |
|
|
2436 | |
4915 | |
|
|
4916 | EV_FREQUENT_CHECK; |
|
|
4917 | } |
|
|
4918 | #endif |
|
|
4919 | |
2437 | #if EV_ASYNC_ENABLE |
4920 | #if EV_CLEANUP_ENABLE |
2438 | void |
4921 | void |
2439 | ev_async_start (EV_P_ ev_async *w) |
4922 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
2440 | { |
4923 | { |
2441 | if (expect_false (ev_is_active (w))) |
4924 | if (expect_false (ev_is_active (w))) |
2442 | return; |
4925 | return; |
2443 | |
4926 | |
2444 | evpipe_init (EV_A); |
4927 | EV_FREQUENT_CHECK; |
2445 | |
4928 | |
2446 | ev_start (EV_A_ (W)w, ++asynccnt); |
4929 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
2447 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
4930 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit); |
2448 | asyncs [asynccnt - 1] = w; |
4931 | cleanups [cleanupcnt - 1] = w; |
2449 | } |
|
|
2450 | |
4932 | |
|
|
4933 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4934 | ev_unref (EV_A); |
|
|
4935 | EV_FREQUENT_CHECK; |
|
|
4936 | } |
|
|
4937 | |
2451 | void |
4938 | void |
2452 | ev_async_stop (EV_P_ ev_async *w) |
4939 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
2453 | { |
4940 | { |
2454 | clear_pending (EV_A_ (W)w); |
4941 | clear_pending (EV_A_ (W)w); |
2455 | if (expect_false (!ev_is_active (w))) |
4942 | if (expect_false (!ev_is_active (w))) |
2456 | return; |
4943 | return; |
2457 | |
4944 | |
|
|
4945 | EV_FREQUENT_CHECK; |
|
|
4946 | ev_ref (EV_A); |
|
|
4947 | |
2458 | { |
4948 | { |
2459 | int active = ((W)w)->active; |
4949 | int active = ev_active (w); |
|
|
4950 | |
|
|
4951 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4952 | ev_active (cleanups [active - 1]) = active; |
|
|
4953 | } |
|
|
4954 | |
|
|
4955 | ev_stop (EV_A_ (W)w); |
|
|
4956 | |
|
|
4957 | EV_FREQUENT_CHECK; |
|
|
4958 | } |
|
|
4959 | #endif |
|
|
4960 | |
|
|
4961 | #if EV_ASYNC_ENABLE |
|
|
4962 | void |
|
|
4963 | ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4964 | { |
|
|
4965 | if (expect_false (ev_is_active (w))) |
|
|
4966 | return; |
|
|
4967 | |
|
|
4968 | w->sent = 0; |
|
|
4969 | |
|
|
4970 | evpipe_init (EV_A); |
|
|
4971 | |
|
|
4972 | EV_FREQUENT_CHECK; |
|
|
4973 | |
|
|
4974 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4975 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit); |
|
|
4976 | asyncs [asynccnt - 1] = w; |
|
|
4977 | |
|
|
4978 | EV_FREQUENT_CHECK; |
|
|
4979 | } |
|
|
4980 | |
|
|
4981 | void |
|
|
4982 | ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4983 | { |
|
|
4984 | clear_pending (EV_A_ (W)w); |
|
|
4985 | if (expect_false (!ev_is_active (w))) |
|
|
4986 | return; |
|
|
4987 | |
|
|
4988 | EV_FREQUENT_CHECK; |
|
|
4989 | |
|
|
4990 | { |
|
|
4991 | int active = ev_active (w); |
|
|
4992 | |
2460 | asyncs [active - 1] = asyncs [--asynccnt]; |
4993 | asyncs [active - 1] = asyncs [--asynccnt]; |
2461 | ((W)asyncs [active - 1])->active = active; |
4994 | ev_active (asyncs [active - 1]) = active; |
2462 | } |
4995 | } |
2463 | |
4996 | |
2464 | ev_stop (EV_A_ (W)w); |
4997 | ev_stop (EV_A_ (W)w); |
2465 | } |
|
|
2466 | |
4998 | |
|
|
4999 | EV_FREQUENT_CHECK; |
|
|
5000 | } |
|
|
5001 | |
2467 | void |
5002 | void |
2468 | ev_async_send (EV_P_ ev_async *w) |
5003 | ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT |
2469 | { |
5004 | { |
2470 | w->sent = 1; |
5005 | w->sent = 1; |
2471 | evpipe_write (EV_A_ &gotasync); |
5006 | evpipe_write (EV_A_ &async_pending); |
2472 | } |
5007 | } |
2473 | #endif |
5008 | #endif |
2474 | |
5009 | |
2475 | /*****************************************************************************/ |
5010 | /*****************************************************************************/ |
2476 | |
5011 | |
… | |
… | |
2486 | once_cb (EV_P_ struct ev_once *once, int revents) |
5021 | once_cb (EV_P_ struct ev_once *once, int revents) |
2487 | { |
5022 | { |
2488 | void (*cb)(int revents, void *arg) = once->cb; |
5023 | void (*cb)(int revents, void *arg) = once->cb; |
2489 | void *arg = once->arg; |
5024 | void *arg = once->arg; |
2490 | |
5025 | |
2491 | ev_io_stop (EV_A_ &once->io); |
5026 | ev_io_stop (EV_A_ &once->io); |
2492 | ev_timer_stop (EV_A_ &once->to); |
5027 | ev_timer_stop (EV_A_ &once->to); |
2493 | ev_free (once); |
5028 | ev_free (once); |
2494 | |
5029 | |
2495 | cb (revents, arg); |
5030 | cb (revents, arg); |
2496 | } |
5031 | } |
2497 | |
5032 | |
2498 | static void |
5033 | static void |
2499 | once_cb_io (EV_P_ ev_io *w, int revents) |
5034 | once_cb_io (EV_P_ ev_io *w, int revents) |
2500 | { |
5035 | { |
2501 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
5036 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
5037 | |
|
|
5038 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
2502 | } |
5039 | } |
2503 | |
5040 | |
2504 | static void |
5041 | static void |
2505 | once_cb_to (EV_P_ ev_timer *w, int revents) |
5042 | once_cb_to (EV_P_ ev_timer *w, int revents) |
2506 | { |
5043 | { |
2507 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
5044 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
2508 | } |
|
|
2509 | |
5045 | |
|
|
5046 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
5047 | } |
|
|
5048 | |
2510 | void |
5049 | void |
2511 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
5050 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT |
2512 | { |
5051 | { |
2513 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
5052 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
2514 | |
|
|
2515 | if (expect_false (!once)) |
|
|
2516 | { |
|
|
2517 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
2518 | return; |
|
|
2519 | } |
|
|
2520 | |
5053 | |
2521 | once->cb = cb; |
5054 | once->cb = cb; |
2522 | once->arg = arg; |
5055 | once->arg = arg; |
2523 | |
5056 | |
2524 | ev_init (&once->io, once_cb_io); |
5057 | ev_init (&once->io, once_cb_io); |
… | |
… | |
2534 | ev_timer_set (&once->to, timeout, 0.); |
5067 | ev_timer_set (&once->to, timeout, 0.); |
2535 | ev_timer_start (EV_A_ &once->to); |
5068 | ev_timer_start (EV_A_ &once->to); |
2536 | } |
5069 | } |
2537 | } |
5070 | } |
2538 | |
5071 | |
|
|
5072 | /*****************************************************************************/ |
|
|
5073 | |
|
|
5074 | #if EV_WALK_ENABLE |
|
|
5075 | ecb_cold |
|
|
5076 | void |
|
|
5077 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT |
|
|
5078 | { |
|
|
5079 | int i, j; |
|
|
5080 | ev_watcher_list *wl, *wn; |
|
|
5081 | |
|
|
5082 | if (types & (EV_IO | EV_EMBED)) |
|
|
5083 | for (i = 0; i < anfdmax; ++i) |
|
|
5084 | for (wl = anfds [i].head; wl; ) |
|
|
5085 | { |
|
|
5086 | wn = wl->next; |
|
|
5087 | |
|
|
5088 | #if EV_EMBED_ENABLE |
|
|
5089 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
5090 | { |
|
|
5091 | if (types & EV_EMBED) |
|
|
5092 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
5093 | } |
|
|
5094 | else |
|
|
5095 | #endif |
|
|
5096 | #if EV_USE_INOTIFY |
|
|
5097 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
5098 | ; |
|
|
5099 | else |
|
|
5100 | #endif |
|
|
5101 | if ((ev_io *)wl != &pipe_w) |
|
|
5102 | if (types & EV_IO) |
|
|
5103 | cb (EV_A_ EV_IO, wl); |
|
|
5104 | |
|
|
5105 | wl = wn; |
|
|
5106 | } |
|
|
5107 | |
|
|
5108 | if (types & (EV_TIMER | EV_STAT)) |
|
|
5109 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
5110 | #if EV_STAT_ENABLE |
|
|
5111 | /*TODO: timer is not always active*/ |
|
|
5112 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
|
|
5113 | { |
|
|
5114 | if (types & EV_STAT) |
|
|
5115 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
|
|
5116 | } |
|
|
5117 | else |
|
|
5118 | #endif |
|
|
5119 | if (types & EV_TIMER) |
|
|
5120 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
|
|
5121 | |
|
|
5122 | #if EV_PERIODIC_ENABLE |
|
|
5123 | if (types & EV_PERIODIC) |
|
|
5124 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
5125 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
5126 | #endif |
|
|
5127 | |
|
|
5128 | #if EV_IDLE_ENABLE |
|
|
5129 | if (types & EV_IDLE) |
|
|
5130 | for (j = NUMPRI; j--; ) |
|
|
5131 | for (i = idlecnt [j]; i--; ) |
|
|
5132 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
5133 | #endif |
|
|
5134 | |
|
|
5135 | #if EV_FORK_ENABLE |
|
|
5136 | if (types & EV_FORK) |
|
|
5137 | for (i = forkcnt; i--; ) |
|
|
5138 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
5139 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
5140 | #endif |
|
|
5141 | |
|
|
5142 | #if EV_ASYNC_ENABLE |
|
|
5143 | if (types & EV_ASYNC) |
|
|
5144 | for (i = asynccnt; i--; ) |
|
|
5145 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
5146 | #endif |
|
|
5147 | |
|
|
5148 | #if EV_PREPARE_ENABLE |
|
|
5149 | if (types & EV_PREPARE) |
|
|
5150 | for (i = preparecnt; i--; ) |
|
|
5151 | # if EV_EMBED_ENABLE |
|
|
5152 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
5153 | # endif |
|
|
5154 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
5155 | #endif |
|
|
5156 | |
|
|
5157 | #if EV_CHECK_ENABLE |
|
|
5158 | if (types & EV_CHECK) |
|
|
5159 | for (i = checkcnt; i--; ) |
|
|
5160 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
5161 | #endif |
|
|
5162 | |
|
|
5163 | #if EV_SIGNAL_ENABLE |
|
|
5164 | if (types & EV_SIGNAL) |
|
|
5165 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
5166 | for (wl = signals [i].head; wl; ) |
|
|
5167 | { |
|
|
5168 | wn = wl->next; |
|
|
5169 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
5170 | wl = wn; |
|
|
5171 | } |
|
|
5172 | #endif |
|
|
5173 | |
|
|
5174 | #if EV_CHILD_ENABLE |
|
|
5175 | if (types & EV_CHILD) |
|
|
5176 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
5177 | for (wl = childs [i]; wl; ) |
|
|
5178 | { |
|
|
5179 | wn = wl->next; |
|
|
5180 | cb (EV_A_ EV_CHILD, wl); |
|
|
5181 | wl = wn; |
|
|
5182 | } |
|
|
5183 | #endif |
|
|
5184 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
5185 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
5186 | } |
|
|
5187 | #endif |
|
|
5188 | |
2539 | #if EV_MULTIPLICITY |
5189 | #if EV_MULTIPLICITY |
2540 | #include "ev_wrap.h" |
5190 | #include "ev_wrap.h" |
2541 | #endif |
5191 | #endif |
2542 | |
5192 | |
2543 | #ifdef __cplusplus |
|
|
2544 | } |
|
|
2545 | #endif |
|
|
2546 | |
|
|