1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009 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 |
|
|
41 | extern "C" { |
|
|
42 | #endif |
|
|
43 | |
|
|
44 | /* this big block deduces configuration from config.h */ |
40 | /* this big block deduces configuration from config.h */ |
45 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
46 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
47 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
48 | # else |
44 | # else |
49 | # include "config.h" |
45 | # include "config.h" |
|
|
46 | # endif |
|
|
47 | |
|
|
48 | # if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
50 | # endif |
52 | # endif |
51 | |
53 | |
52 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
53 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
54 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
… | |
… | |
57 | # endif |
59 | # endif |
58 | # ifndef EV_USE_MONOTONIC |
60 | # ifndef EV_USE_MONOTONIC |
59 | # define EV_USE_MONOTONIC 1 |
61 | # define EV_USE_MONOTONIC 1 |
60 | # endif |
62 | # endif |
61 | # endif |
63 | # endif |
62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
64 | # elif !defined EV_USE_CLOCK_SYSCALL |
63 | # define EV_USE_CLOCK_SYSCALL 0 |
65 | # define EV_USE_CLOCK_SYSCALL 0 |
64 | # endif |
66 | # endif |
65 | |
67 | |
66 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
67 | # ifndef EV_USE_MONOTONIC |
69 | # ifndef EV_USE_MONOTONIC |
… | |
… | |
77 | # ifndef EV_USE_REALTIME |
79 | # ifndef EV_USE_REALTIME |
78 | # define EV_USE_REALTIME 0 |
80 | # define EV_USE_REALTIME 0 |
79 | # endif |
81 | # endif |
80 | # endif |
82 | # endif |
81 | |
83 | |
|
|
84 | # if HAVE_NANOSLEEP |
82 | # ifndef EV_USE_NANOSLEEP |
85 | # ifndef EV_USE_NANOSLEEP |
83 | # if HAVE_NANOSLEEP |
|
|
84 | # define EV_USE_NANOSLEEP 1 |
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
87 | # endif |
85 | # else |
88 | # else |
|
|
89 | # undef EV_USE_NANOSLEEP |
86 | # 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 |
87 | # endif |
96 | # endif |
|
|
97 | # else |
|
|
98 | # undef EV_USE_SELECT |
|
|
99 | # define EV_USE_SELECT 0 |
88 | # endif |
100 | # endif |
89 | |
101 | |
|
|
102 | # if HAVE_POLL && HAVE_POLL_H |
90 | # ifndef EV_USE_SELECT |
103 | # ifndef EV_USE_POLL |
91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
92 | # define EV_USE_SELECT 1 |
|
|
93 | # else |
|
|
94 | # define EV_USE_SELECT 0 |
|
|
95 | # endif |
105 | # endif |
96 | # endif |
|
|
97 | |
|
|
98 | # ifndef EV_USE_POLL |
|
|
99 | # if HAVE_POLL && HAVE_POLL_H |
|
|
100 | # define EV_USE_POLL 1 |
|
|
101 | # else |
106 | # else |
|
|
107 | # undef EV_USE_POLL |
102 | # define EV_USE_POLL 0 |
108 | # define EV_USE_POLL 0 |
103 | # endif |
|
|
104 | # endif |
109 | # endif |
105 | |
110 | |
106 | # ifndef EV_USE_EPOLL |
|
|
107 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
108 | # define EV_USE_EPOLL 1 |
112 | # ifndef EV_USE_EPOLL |
109 | # else |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
110 | # define EV_USE_EPOLL 0 |
|
|
111 | # endif |
114 | # endif |
|
|
115 | # else |
|
|
116 | # undef EV_USE_EPOLL |
|
|
117 | # define EV_USE_EPOLL 0 |
112 | # endif |
118 | # endif |
113 | |
119 | |
114 | # ifndef EV_USE_KQUEUE |
120 | # if HAVE_LINUX_AIO_ABI_H |
115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
121 | # ifndef EV_USE_LINUXAIO |
116 | # define EV_USE_KQUEUE 1 |
122 | # define EV_USE_LINUXAIO EV_FEATURE_BACKENDS |
117 | # else |
|
|
118 | # define EV_USE_KQUEUE 0 |
|
|
119 | # endif |
123 | # endif |
|
|
124 | # else |
|
|
125 | # undef EV_USE_LINUXAIO |
|
|
126 | # define EV_USE_LINUXAIO 0 |
120 | # endif |
127 | # endif |
121 | |
128 | |
122 | # ifndef EV_USE_PORT |
129 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
130 | # ifndef EV_USE_KQUEUE |
124 | # define EV_USE_PORT 1 |
131 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
125 | # else |
|
|
126 | # define EV_USE_PORT 0 |
|
|
127 | # endif |
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_KQUEUE |
|
|
135 | # define EV_USE_KQUEUE 0 |
128 | # endif |
136 | # endif |
129 | |
137 | |
|
|
138 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
130 | # ifndef EV_USE_INOTIFY |
139 | # ifndef EV_USE_PORT |
131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
140 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
132 | # define EV_USE_INOTIFY 1 |
|
|
133 | # else |
|
|
134 | # define EV_USE_INOTIFY 0 |
|
|
135 | # endif |
141 | # endif |
|
|
142 | # else |
|
|
143 | # undef EV_USE_PORT |
|
|
144 | # define EV_USE_PORT 0 |
136 | # endif |
145 | # endif |
137 | |
146 | |
|
|
147 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
138 | # ifndef EV_USE_SIGNALFD |
148 | # ifndef EV_USE_INOTIFY |
139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
149 | # define EV_USE_INOTIFY EV_FEATURE_OS |
140 | # define EV_USE_SIGNALFD 1 |
|
|
141 | # else |
|
|
142 | # define EV_USE_SIGNALFD 0 |
|
|
143 | # endif |
150 | # endif |
|
|
151 | # else |
|
|
152 | # undef EV_USE_INOTIFY |
|
|
153 | # define EV_USE_INOTIFY 0 |
144 | # endif |
154 | # endif |
145 | |
155 | |
|
|
156 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
146 | # ifndef EV_USE_EVENTFD |
157 | # ifndef EV_USE_SIGNALFD |
147 | # if HAVE_EVENTFD |
158 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
148 | # define EV_USE_EVENTFD 1 |
|
|
149 | # else |
|
|
150 | # define EV_USE_EVENTFD 0 |
|
|
151 | # endif |
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 |
152 | # endif |
172 | # endif |
153 | |
173 | |
154 | #endif |
174 | #endif |
155 | |
175 | |
156 | #include <math.h> |
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 | |
157 | #include <stdlib.h> |
186 | #include <stdlib.h> |
|
|
187 | #include <string.h> |
158 | #include <fcntl.h> |
188 | #include <fcntl.h> |
159 | #include <stddef.h> |
189 | #include <stddef.h> |
160 | |
190 | |
161 | #include <stdio.h> |
191 | #include <stdio.h> |
162 | |
192 | |
163 | #include <assert.h> |
193 | #include <assert.h> |
164 | #include <errno.h> |
194 | #include <errno.h> |
165 | #include <sys/types.h> |
195 | #include <sys/types.h> |
166 | #include <time.h> |
196 | #include <time.h> |
|
|
197 | #include <limits.h> |
167 | |
198 | |
168 | #include <signal.h> |
199 | #include <signal.h> |
169 | |
200 | |
170 | #ifdef EV_H |
201 | #ifdef EV_H |
171 | # include EV_H |
202 | # include EV_H |
172 | #else |
203 | #else |
173 | # 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 |
174 | #endif |
216 | #endif |
175 | |
217 | |
176 | #ifndef _WIN32 |
218 | #ifndef _WIN32 |
177 | # include <sys/time.h> |
219 | # include <sys/time.h> |
178 | # include <sys/wait.h> |
220 | # include <sys/wait.h> |
179 | # include <unistd.h> |
221 | # include <unistd.h> |
180 | #else |
222 | #else |
181 | # include <io.h> |
223 | # include <io.h> |
182 | # define WIN32_LEAN_AND_MEAN |
224 | # define WIN32_LEAN_AND_MEAN |
|
|
225 | # include <winsock2.h> |
183 | # include <windows.h> |
226 | # include <windows.h> |
184 | # ifndef EV_SELECT_IS_WINSOCKET |
227 | # ifndef EV_SELECT_IS_WINSOCKET |
185 | # define EV_SELECT_IS_WINSOCKET 1 |
228 | # define EV_SELECT_IS_WINSOCKET 1 |
186 | # endif |
229 | # endif |
|
|
230 | # undef EV_AVOID_STDIO |
187 | #endif |
231 | #endif |
188 | |
232 | |
189 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
233 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
190 | |
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 | |
191 | #ifndef EV_USE_CLOCK_SYSCALL |
264 | #ifndef EV_USE_CLOCK_SYSCALL |
192 | # if __linux && __GLIBC__ >= 2 |
265 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
193 | # define EV_USE_CLOCK_SYSCALL 1 |
266 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
194 | # else |
267 | # else |
195 | # define EV_USE_CLOCK_SYSCALL 0 |
268 | # define EV_USE_CLOCK_SYSCALL 0 |
196 | # endif |
269 | # endif |
197 | #endif |
270 | #endif |
198 | |
271 | |
|
|
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 |
|
|
280 | |
199 | #ifndef EV_USE_MONOTONIC |
281 | #ifndef EV_USE_MONOTONIC |
200 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
282 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
201 | # define EV_USE_MONOTONIC 1 |
283 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
202 | # else |
284 | # else |
203 | # define EV_USE_MONOTONIC 0 |
285 | # define EV_USE_MONOTONIC 0 |
204 | # endif |
286 | # endif |
205 | #endif |
287 | #endif |
206 | |
288 | |
… | |
… | |
208 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
290 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
209 | #endif |
291 | #endif |
210 | |
292 | |
211 | #ifndef EV_USE_NANOSLEEP |
293 | #ifndef EV_USE_NANOSLEEP |
212 | # if _POSIX_C_SOURCE >= 199309L |
294 | # if _POSIX_C_SOURCE >= 199309L |
213 | # define EV_USE_NANOSLEEP 1 |
295 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
214 | # else |
296 | # else |
215 | # define EV_USE_NANOSLEEP 0 |
297 | # define EV_USE_NANOSLEEP 0 |
216 | # endif |
298 | # endif |
217 | #endif |
299 | #endif |
218 | |
300 | |
219 | #ifndef EV_USE_SELECT |
301 | #ifndef EV_USE_SELECT |
220 | # define EV_USE_SELECT 1 |
302 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
221 | #endif |
303 | #endif |
222 | |
304 | |
223 | #ifndef EV_USE_POLL |
305 | #ifndef EV_USE_POLL |
224 | # ifdef _WIN32 |
306 | # ifdef _WIN32 |
225 | # define EV_USE_POLL 0 |
307 | # define EV_USE_POLL 0 |
226 | # else |
308 | # else |
227 | # define EV_USE_POLL 1 |
309 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
228 | # endif |
310 | # endif |
229 | #endif |
311 | #endif |
230 | |
312 | |
231 | #ifndef EV_USE_EPOLL |
313 | #ifndef EV_USE_EPOLL |
232 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
314 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
233 | # define EV_USE_EPOLL 1 |
315 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
234 | # else |
316 | # else |
235 | # define EV_USE_EPOLL 0 |
317 | # define EV_USE_EPOLL 0 |
236 | # endif |
318 | # endif |
237 | #endif |
319 | #endif |
238 | |
320 | |
… | |
… | |
242 | |
324 | |
243 | #ifndef EV_USE_PORT |
325 | #ifndef EV_USE_PORT |
244 | # define EV_USE_PORT 0 |
326 | # define EV_USE_PORT 0 |
245 | #endif |
327 | #endif |
246 | |
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 | |
247 | #ifndef EV_USE_INOTIFY |
337 | #ifndef EV_USE_INOTIFY |
248 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
338 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
249 | # define EV_USE_INOTIFY 1 |
339 | # define EV_USE_INOTIFY EV_FEATURE_OS |
250 | # else |
340 | # else |
251 | # define EV_USE_INOTIFY 0 |
341 | # define EV_USE_INOTIFY 0 |
252 | # endif |
342 | # endif |
253 | #endif |
343 | #endif |
254 | |
344 | |
255 | #ifndef EV_PID_HASHSIZE |
345 | #ifndef EV_PID_HASHSIZE |
256 | # if EV_MINIMAL |
346 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
257 | # define EV_PID_HASHSIZE 1 |
|
|
258 | # else |
|
|
259 | # define EV_PID_HASHSIZE 16 |
|
|
260 | # endif |
|
|
261 | #endif |
347 | #endif |
262 | |
348 | |
263 | #ifndef EV_INOTIFY_HASHSIZE |
349 | #ifndef EV_INOTIFY_HASHSIZE |
264 | # if EV_MINIMAL |
350 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
265 | # define EV_INOTIFY_HASHSIZE 1 |
|
|
266 | # else |
|
|
267 | # define EV_INOTIFY_HASHSIZE 16 |
|
|
268 | # endif |
|
|
269 | #endif |
351 | #endif |
270 | |
352 | |
271 | #ifndef EV_USE_EVENTFD |
353 | #ifndef EV_USE_EVENTFD |
272 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
354 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
273 | # define EV_USE_EVENTFD 1 |
355 | # define EV_USE_EVENTFD EV_FEATURE_OS |
274 | # else |
356 | # else |
275 | # define EV_USE_EVENTFD 0 |
357 | # define EV_USE_EVENTFD 0 |
276 | # endif |
358 | # endif |
277 | #endif |
359 | #endif |
278 | |
360 | |
279 | #ifndef EV_USE_SIGNALFD |
361 | #ifndef EV_USE_SIGNALFD |
280 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
362 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
281 | # define EV_USE_SIGNALFD 1 |
363 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
282 | # else |
364 | # else |
283 | # define EV_USE_SIGNALFD 0 |
365 | # define EV_USE_SIGNALFD 0 |
284 | # endif |
366 | # endif |
285 | #endif |
367 | #endif |
286 | |
368 | |
… | |
… | |
289 | # define EV_USE_4HEAP 1 |
371 | # define EV_USE_4HEAP 1 |
290 | # define EV_HEAP_CACHE_AT 1 |
372 | # define EV_HEAP_CACHE_AT 1 |
291 | #endif |
373 | #endif |
292 | |
374 | |
293 | #ifndef EV_VERIFY |
375 | #ifndef EV_VERIFY |
294 | # define EV_VERIFY !EV_MINIMAL |
376 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
295 | #endif |
377 | #endif |
296 | |
378 | |
297 | #ifndef EV_USE_4HEAP |
379 | #ifndef EV_USE_4HEAP |
298 | # define EV_USE_4HEAP !EV_MINIMAL |
380 | # define EV_USE_4HEAP EV_FEATURE_DATA |
299 | #endif |
381 | #endif |
300 | |
382 | |
301 | #ifndef EV_HEAP_CACHE_AT |
383 | #ifndef EV_HEAP_CACHE_AT |
302 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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 |
303 | #endif |
401 | #endif |
304 | |
402 | |
305 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
403 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
306 | /* which makes programs even slower. might work on other unices, too. */ |
404 | /* which makes programs even slower. might work on other unices, too. */ |
307 | #if EV_USE_CLOCK_SYSCALL |
405 | #if EV_USE_CLOCK_SYSCALL |
308 | # include <syscall.h> |
406 | # include <sys/syscall.h> |
309 | # ifdef SYS_clock_gettime |
407 | # ifdef SYS_clock_gettime |
310 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
408 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
311 | # undef EV_USE_MONOTONIC |
409 | # undef EV_USE_MONOTONIC |
312 | # define EV_USE_MONOTONIC 1 |
410 | # define EV_USE_MONOTONIC 1 |
313 | # else |
411 | # else |
… | |
… | |
332 | # undef EV_USE_INOTIFY |
430 | # undef EV_USE_INOTIFY |
333 | # define EV_USE_INOTIFY 0 |
431 | # define EV_USE_INOTIFY 0 |
334 | #endif |
432 | #endif |
335 | |
433 | |
336 | #if !EV_USE_NANOSLEEP |
434 | #if !EV_USE_NANOSLEEP |
337 | # ifndef _WIN32 |
435 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
436 | # if !defined _WIN32 && !defined __hpux |
338 | # include <sys/select.h> |
437 | # include <sys/select.h> |
339 | # endif |
438 | # endif |
340 | #endif |
439 | #endif |
341 | |
440 | |
|
|
441 | #if EV_USE_LINUXAIO |
|
|
442 | # include <sys/syscall.h> |
|
|
443 | # if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */ |
|
|
444 | # undef EV_USE_LINUXAIO |
|
|
445 | # define EV_USE_LINUXAIO 0 |
|
|
446 | # endif |
|
|
447 | #endif |
|
|
448 | |
342 | #if EV_USE_INOTIFY |
449 | #if EV_USE_INOTIFY |
343 | # include <sys/utsname.h> |
|
|
344 | # include <sys/statfs.h> |
450 | # include <sys/statfs.h> |
345 | # include <sys/inotify.h> |
451 | # include <sys/inotify.h> |
346 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
452 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
347 | # ifndef IN_DONT_FOLLOW |
453 | # ifndef IN_DONT_FOLLOW |
348 | # undef EV_USE_INOTIFY |
454 | # undef EV_USE_INOTIFY |
349 | # define EV_USE_INOTIFY 0 |
455 | # define EV_USE_INOTIFY 0 |
350 | # endif |
456 | # endif |
351 | #endif |
457 | #endif |
352 | |
458 | |
353 | #if EV_SELECT_IS_WINSOCKET |
|
|
354 | # include <winsock.h> |
|
|
355 | #endif |
|
|
356 | |
|
|
357 | #if EV_USE_EVENTFD |
459 | #if EV_USE_EVENTFD |
358 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
460 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
359 | # include <stdint.h> |
461 | # include <stdint.h> |
360 | # ifndef EFD_NONBLOCK |
462 | # ifndef EFD_NONBLOCK |
361 | # define EFD_NONBLOCK O_NONBLOCK |
463 | # define EFD_NONBLOCK O_NONBLOCK |
362 | # endif |
464 | # endif |
363 | # ifndef EFD_CLOEXEC |
465 | # ifndef EFD_CLOEXEC |
|
|
466 | # ifdef O_CLOEXEC |
364 | # define EFD_CLOEXEC O_CLOEXEC |
467 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
468 | # else |
|
|
469 | # define EFD_CLOEXEC 02000000 |
|
|
470 | # endif |
365 | # endif |
471 | # endif |
366 | # ifdef __cplusplus |
472 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
367 | extern "C" { |
473 | #endif |
|
|
474 | |
|
|
475 | #if EV_USE_SIGNALFD |
|
|
476 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
477 | # include <stdint.h> |
|
|
478 | # ifndef SFD_NONBLOCK |
|
|
479 | # define SFD_NONBLOCK O_NONBLOCK |
368 | # endif |
480 | # endif |
369 | int eventfd (unsigned int initval, int flags); |
481 | # ifndef SFD_CLOEXEC |
370 | # ifdef __cplusplus |
482 | # ifdef O_CLOEXEC |
371 | } |
483 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
484 | # else |
|
|
485 | # define SFD_CLOEXEC 02000000 |
|
|
486 | # endif |
372 | # endif |
487 | # endif |
373 | #endif |
488 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
374 | |
489 | |
375 | #if EV_USE_SIGNALFD |
490 | struct signalfd_siginfo |
376 | # include <sys/signalfd.h> |
491 | { |
|
|
492 | uint32_t ssi_signo; |
|
|
493 | char pad[128 - sizeof (uint32_t)]; |
|
|
494 | }; |
377 | #endif |
495 | #endif |
378 | |
496 | |
379 | /**/ |
497 | /**/ |
380 | |
498 | |
381 | #if EV_VERIFY >= 3 |
499 | #if EV_VERIFY >= 3 |
382 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
500 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
383 | #else |
501 | #else |
384 | # define EV_FREQUENT_CHECK do { } while (0) |
502 | # define EV_FREQUENT_CHECK do { } while (0) |
385 | #endif |
503 | #endif |
386 | |
504 | |
387 | /* |
505 | /* |
388 | * This is used to avoid floating point rounding problems. |
506 | * This is used to work around floating point rounding problems. |
389 | * It is added to ev_rt_now when scheduling periodics |
|
|
390 | * to ensure progress, time-wise, even when rounding |
|
|
391 | * errors are against us. |
|
|
392 | * This value is good at least till the year 4000. |
507 | * This value is good at least till the year 4000. |
393 | * Better solutions welcome. |
|
|
394 | */ |
508 | */ |
395 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
509 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
510 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
396 | |
511 | |
397 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
512 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
398 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
513 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
399 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
400 | |
514 | |
|
|
515 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
516 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
517 | |
|
|
518 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
519 | /* ECB.H BEGIN */ |
|
|
520 | /* |
|
|
521 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
522 | * |
|
|
523 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
524 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
525 | * All rights reserved. |
|
|
526 | * |
|
|
527 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
528 | * tion, are permitted provided that the following conditions are met: |
|
|
529 | * |
|
|
530 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
531 | * this list of conditions and the following disclaimer. |
|
|
532 | * |
|
|
533 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
534 | * notice, this list of conditions and the following disclaimer in the |
|
|
535 | * documentation and/or other materials provided with the distribution. |
|
|
536 | * |
|
|
537 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
538 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
539 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
540 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
541 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
542 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
543 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
544 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
545 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
546 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
547 | * |
|
|
548 | * Alternatively, the contents of this file may be used under the terms of |
|
|
549 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
550 | * in which case the provisions of the GPL are applicable instead of |
|
|
551 | * the above. If you wish to allow the use of your version of this file |
|
|
552 | * only under the terms of the GPL and not to allow others to use your |
|
|
553 | * version of this file under the BSD license, indicate your decision |
|
|
554 | * by deleting the provisions above and replace them with the notice |
|
|
555 | * and other provisions required by the GPL. If you do not delete the |
|
|
556 | * provisions above, a recipient may use your version of this file under |
|
|
557 | * either the BSD or the GPL. |
|
|
558 | */ |
|
|
559 | |
|
|
560 | #ifndef ECB_H |
|
|
561 | #define ECB_H |
|
|
562 | |
|
|
563 | /* 16 bits major, 16 bits minor */ |
|
|
564 | #define ECB_VERSION 0x00010006 |
|
|
565 | |
|
|
566 | #ifdef _WIN32 |
|
|
567 | typedef signed char int8_t; |
|
|
568 | typedef unsigned char uint8_t; |
|
|
569 | typedef signed short int16_t; |
|
|
570 | typedef unsigned short uint16_t; |
|
|
571 | typedef signed int int32_t; |
|
|
572 | typedef unsigned int uint32_t; |
401 | #if __GNUC__ >= 4 |
573 | #if __GNUC__ |
|
|
574 | typedef signed long long int64_t; |
|
|
575 | typedef unsigned long long uint64_t; |
|
|
576 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
577 | typedef signed __int64 int64_t; |
|
|
578 | typedef unsigned __int64 uint64_t; |
|
|
579 | #endif |
|
|
580 | #ifdef _WIN64 |
|
|
581 | #define ECB_PTRSIZE 8 |
|
|
582 | typedef uint64_t uintptr_t; |
|
|
583 | typedef int64_t intptr_t; |
|
|
584 | #else |
|
|
585 | #define ECB_PTRSIZE 4 |
|
|
586 | typedef uint32_t uintptr_t; |
|
|
587 | typedef int32_t intptr_t; |
|
|
588 | #endif |
|
|
589 | #else |
|
|
590 | #include <inttypes.h> |
|
|
591 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
592 | #define ECB_PTRSIZE 8 |
|
|
593 | #else |
|
|
594 | #define ECB_PTRSIZE 4 |
|
|
595 | #endif |
|
|
596 | #endif |
|
|
597 | |
|
|
598 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
599 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
600 | |
|
|
601 | /* work around x32 idiocy by defining proper macros */ |
|
|
602 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
603 | #if _ILP32 |
|
|
604 | #define ECB_AMD64_X32 1 |
|
|
605 | #else |
|
|
606 | #define ECB_AMD64 1 |
|
|
607 | #endif |
|
|
608 | #endif |
|
|
609 | |
|
|
610 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
611 | * what their idiot authors think are the "more important" extensions, |
|
|
612 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
613 | * or so. |
|
|
614 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
615 | * an issue with that they should have done it right in the first place. |
|
|
616 | */ |
|
|
617 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
618 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
619 | #else |
|
|
620 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
621 | #endif |
|
|
622 | |
|
|
623 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
624 | |
|
|
625 | #if __clang__ && defined __has_builtin |
|
|
626 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
627 | #else |
|
|
628 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
629 | #endif |
|
|
630 | |
|
|
631 | #if __clang__ && defined __has_extension |
|
|
632 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
633 | #else |
|
|
634 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
635 | #endif |
|
|
636 | |
|
|
637 | #define ECB_CPP (__cplusplus+0) |
|
|
638 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
639 | #define ECB_CPP14 (__cplusplus >= 201402L) |
|
|
640 | #define ECB_CPP17 (__cplusplus >= 201703L) |
|
|
641 | |
|
|
642 | #if ECB_CPP |
|
|
643 | #define ECB_C 0 |
|
|
644 | #define ECB_STDC_VERSION 0 |
|
|
645 | #else |
|
|
646 | #define ECB_C 1 |
|
|
647 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
651 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
652 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
|
|
653 | |
|
|
654 | #if ECB_CPP |
|
|
655 | #define ECB_EXTERN_C extern "C" |
|
|
656 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
657 | #define ECB_EXTERN_C_END } |
|
|
658 | #else |
|
|
659 | #define ECB_EXTERN_C extern |
|
|
660 | #define ECB_EXTERN_C_BEG |
|
|
661 | #define ECB_EXTERN_C_END |
|
|
662 | #endif |
|
|
663 | |
|
|
664 | /*****************************************************************************/ |
|
|
665 | |
|
|
666 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
667 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
668 | |
|
|
669 | #if ECB_NO_THREADS |
|
|
670 | #define ECB_NO_SMP 1 |
|
|
671 | #endif |
|
|
672 | |
|
|
673 | #if ECB_NO_SMP |
|
|
674 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
675 | #endif |
|
|
676 | |
|
|
677 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
678 | #if __xlC__ && ECB_CPP |
|
|
679 | #include <builtins.h> |
|
|
680 | #endif |
|
|
681 | |
|
|
682 | #if 1400 <= _MSC_VER |
|
|
683 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
684 | #endif |
|
|
685 | |
|
|
686 | #ifndef ECB_MEMORY_FENCE |
|
|
687 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
688 | #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
|
|
689 | #if __i386 || __i386__ |
|
|
690 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
691 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
692 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
693 | #elif ECB_GCC_AMD64 |
|
|
694 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
695 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
696 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
697 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
698 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
699 | #elif defined __ARM_ARCH_2__ \ |
|
|
700 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
|
|
701 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
|
|
702 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
|
|
703 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
|
|
704 | || defined __ARM_ARCH_5TEJ__ |
|
|
705 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
|
|
706 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
707 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
708 | || defined __ARM_ARCH_6T2__ |
|
|
709 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
710 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
711 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
712 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
713 | #elif __aarch64__ |
|
|
714 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
715 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
|
|
716 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
717 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
718 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
719 | #elif defined __s390__ || defined __s390x__ |
|
|
720 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
721 | #elif defined __mips__ |
|
|
722 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
723 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
724 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
725 | #elif defined __alpha__ |
|
|
726 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
727 | #elif defined __hppa__ |
|
|
728 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
729 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
730 | #elif defined __ia64__ |
|
|
731 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
732 | #elif defined __m68k__ |
|
|
733 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
734 | #elif defined __m88k__ |
|
|
735 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
736 | #elif defined __sh__ |
|
|
737 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
738 | #endif |
|
|
739 | #endif |
|
|
740 | #endif |
|
|
741 | |
|
|
742 | #ifndef ECB_MEMORY_FENCE |
|
|
743 | #if ECB_GCC_VERSION(4,7) |
|
|
744 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
745 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
746 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
747 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
748 | #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
|
|
749 | |
|
|
750 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
751 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
752 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
753 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
754 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
755 | #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
|
|
756 | |
|
|
757 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
758 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
759 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
760 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
761 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
762 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
763 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
764 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
765 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
766 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
767 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
768 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
769 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
770 | #elif defined _WIN32 |
|
|
771 | #include <WinNT.h> |
|
|
772 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
773 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
774 | #include <mbarrier.h> |
|
|
775 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
776 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
|
|
777 | #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
|
|
778 | #define ECB_MEMORY_FENCE_RELAXED __compiler_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 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
790 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
|
|
791 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
|
|
792 | #endif |
|
|
793 | #endif |
|
|
794 | |
|
|
795 | #ifndef ECB_MEMORY_FENCE |
|
|
796 | #if !ECB_AVOID_PTHREADS |
|
|
797 | /* |
|
|
798 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
799 | * or failure to find pthread.h, then you should implement |
|
|
800 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
801 | * OR provide pthread.h and link against the posix thread library |
|
|
802 | * of your system. |
|
|
803 | */ |
|
|
804 | #include <pthread.h> |
|
|
805 | #define ECB_NEEDS_PTHREADS 1 |
|
|
806 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
807 | |
|
|
808 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
809 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
810 | #endif |
|
|
811 | #endif |
|
|
812 | |
|
|
813 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
814 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
815 | #endif |
|
|
816 | |
|
|
817 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
818 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
819 | #endif |
|
|
820 | |
|
|
821 | #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
|
|
822 | #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
|
|
823 | #endif |
|
|
824 | |
|
|
825 | /*****************************************************************************/ |
|
|
826 | |
|
|
827 | #if ECB_CPP |
|
|
828 | #define ecb_inline static inline |
|
|
829 | #elif ECB_GCC_VERSION(2,5) |
|
|
830 | #define ecb_inline static __inline__ |
|
|
831 | #elif ECB_C99 |
|
|
832 | #define ecb_inline static inline |
|
|
833 | #else |
|
|
834 | #define ecb_inline static |
|
|
835 | #endif |
|
|
836 | |
|
|
837 | #if ECB_GCC_VERSION(3,3) |
|
|
838 | #define ecb_restrict __restrict__ |
|
|
839 | #elif ECB_C99 |
|
|
840 | #define ecb_restrict restrict |
|
|
841 | #else |
|
|
842 | #define ecb_restrict |
|
|
843 | #endif |
|
|
844 | |
|
|
845 | typedef int ecb_bool; |
|
|
846 | |
|
|
847 | #define ECB_CONCAT_(a, b) a ## b |
|
|
848 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
849 | #define ECB_STRINGIFY_(a) # a |
|
|
850 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
851 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
|
|
852 | |
|
|
853 | #define ecb_function_ ecb_inline |
|
|
854 | |
|
|
855 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
856 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
857 | #else |
|
|
858 | #define ecb_attribute(attrlist) |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
862 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
863 | #else |
|
|
864 | /* possible C11 impl for integral types |
|
|
865 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
866 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
867 | |
|
|
868 | #define ecb_is_constant(expr) 0 |
|
|
869 | #endif |
|
|
870 | |
|
|
871 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
402 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
872 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
403 | # define noinline __attribute__ ((noinline)) |
|
|
404 | #else |
873 | #else |
405 | # define expect(expr,value) (expr) |
874 | #define ecb_expect(expr,value) (expr) |
406 | # define noinline |
|
|
407 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
408 | # define inline |
|
|
409 | # endif |
875 | #endif |
410 | #endif |
|
|
411 | |
876 | |
|
|
877 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
878 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
879 | #else |
|
|
880 | #define ecb_prefetch(addr,rw,locality) |
|
|
881 | #endif |
|
|
882 | |
|
|
883 | /* no emulation for ecb_decltype */ |
|
|
884 | #if ECB_CPP11 |
|
|
885 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
886 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
887 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
888 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
889 | #define ecb_decltype(x) __typeof__ (x) |
|
|
890 | #endif |
|
|
891 | |
|
|
892 | #if _MSC_VER >= 1300 |
|
|
893 | #define ecb_deprecated __declspec (deprecated) |
|
|
894 | #else |
|
|
895 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
896 | #endif |
|
|
897 | |
|
|
898 | #if _MSC_VER >= 1500 |
|
|
899 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
900 | #elif ECB_GCC_VERSION(4,5) |
|
|
901 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
902 | #else |
|
|
903 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | #if _MSC_VER >= 1400 |
|
|
907 | #define ecb_noinline __declspec (noinline) |
|
|
908 | #else |
|
|
909 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
910 | #endif |
|
|
911 | |
|
|
912 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
913 | #define ecb_const ecb_attribute ((__const__)) |
|
|
914 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
915 | |
|
|
916 | #if ECB_C11 || __IBMC_NORETURN |
|
|
917 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
918 | #define ecb_noreturn _Noreturn |
|
|
919 | #elif ECB_CPP11 |
|
|
920 | #define ecb_noreturn [[noreturn]] |
|
|
921 | #elif _MSC_VER >= 1200 |
|
|
922 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
923 | #define ecb_noreturn __declspec (noreturn) |
|
|
924 | #else |
|
|
925 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
926 | #endif |
|
|
927 | |
|
|
928 | #if ECB_GCC_VERSION(4,3) |
|
|
929 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
930 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
931 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
932 | #else |
|
|
933 | #define ecb_artificial |
|
|
934 | #define ecb_hot |
|
|
935 | #define ecb_cold |
|
|
936 | #endif |
|
|
937 | |
|
|
938 | /* put around conditional expressions if you are very sure that the */ |
|
|
939 | /* expression is mostly true or mostly false. note that these return */ |
|
|
940 | /* booleans, not the expression. */ |
412 | #define expect_false(expr) expect ((expr) != 0, 0) |
941 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
413 | #define expect_true(expr) expect ((expr) != 0, 1) |
942 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
943 | /* for compatibility to the rest of the world */ |
|
|
944 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
945 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
946 | |
|
|
947 | /* count trailing zero bits and count # of one bits */ |
|
|
948 | #if ECB_GCC_VERSION(3,4) \ |
|
|
949 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
950 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
951 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
952 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
953 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
954 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
955 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
956 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
957 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
958 | /* no popcountll */ |
|
|
959 | #else |
|
|
960 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
961 | ecb_function_ ecb_const int |
|
|
962 | ecb_ctz32 (uint32_t x) |
|
|
963 | { |
|
|
964 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
965 | unsigned long r; |
|
|
966 | _BitScanForward (&r, x); |
|
|
967 | return (int)r; |
|
|
968 | #else |
|
|
969 | int r = 0; |
|
|
970 | |
|
|
971 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
972 | |
|
|
973 | #if ECB_branchless_on_i386 |
|
|
974 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
975 | r += !!(x & 0xcccccccc) << 1; |
|
|
976 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
977 | r += !!(x & 0xff00ff00) << 3; |
|
|
978 | r += !!(x & 0xffff0000) << 4; |
|
|
979 | #else |
|
|
980 | if (x & 0xaaaaaaaa) r += 1; |
|
|
981 | if (x & 0xcccccccc) r += 2; |
|
|
982 | if (x & 0xf0f0f0f0) r += 4; |
|
|
983 | if (x & 0xff00ff00) r += 8; |
|
|
984 | if (x & 0xffff0000) r += 16; |
|
|
985 | #endif |
|
|
986 | |
|
|
987 | return r; |
|
|
988 | #endif |
|
|
989 | } |
|
|
990 | |
|
|
991 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
992 | ecb_function_ ecb_const int |
|
|
993 | ecb_ctz64 (uint64_t x) |
|
|
994 | { |
|
|
995 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
996 | unsigned long r; |
|
|
997 | _BitScanForward64 (&r, x); |
|
|
998 | return (int)r; |
|
|
999 | #else |
|
|
1000 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
1001 | return ecb_ctz32 (x >> shift) + shift; |
|
|
1002 | #endif |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
1006 | ecb_function_ ecb_const int |
|
|
1007 | ecb_popcount32 (uint32_t x) |
|
|
1008 | { |
|
|
1009 | x -= (x >> 1) & 0x55555555; |
|
|
1010 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
1011 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
1012 | x *= 0x01010101; |
|
|
1013 | |
|
|
1014 | return x >> 24; |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
1018 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
1019 | { |
|
|
1020 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1021 | unsigned long r; |
|
|
1022 | _BitScanReverse (&r, x); |
|
|
1023 | return (int)r; |
|
|
1024 | #else |
|
|
1025 | int r = 0; |
|
|
1026 | |
|
|
1027 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
1028 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
1029 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
1030 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
1031 | if (x >> 1) { r += 1; } |
|
|
1032 | |
|
|
1033 | return r; |
|
|
1034 | #endif |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1038 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1039 | { |
|
|
1040 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1041 | unsigned long r; |
|
|
1042 | _BitScanReverse64 (&r, x); |
|
|
1043 | return (int)r; |
|
|
1044 | #else |
|
|
1045 | int r = 0; |
|
|
1046 | |
|
|
1047 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1048 | |
|
|
1049 | return r + ecb_ld32 (x); |
|
|
1050 | #endif |
|
|
1051 | } |
|
|
1052 | #endif |
|
|
1053 | |
|
|
1054 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1055 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1056 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1057 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1058 | |
|
|
1059 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1060 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1061 | { |
|
|
1062 | return ( (x * 0x0802U & 0x22110U) |
|
|
1063 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1067 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1068 | { |
|
|
1069 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1070 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1071 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1072 | x = ( x >> 8 ) | ( x << 8); |
|
|
1073 | |
|
|
1074 | return x; |
|
|
1075 | } |
|
|
1076 | |
|
|
1077 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1078 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1079 | { |
|
|
1080 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1081 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1082 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1083 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1084 | x = ( x >> 16 ) | ( x << 16); |
|
|
1085 | |
|
|
1086 | return x; |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1090 | /* so for this version we are lazy */ |
|
|
1091 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1092 | ecb_function_ ecb_const int |
|
|
1093 | ecb_popcount64 (uint64_t x) |
|
|
1094 | { |
|
|
1095 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1096 | } |
|
|
1097 | |
|
|
1098 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1099 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1100 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1101 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1102 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1103 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1104 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1105 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1106 | |
|
|
1107 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1108 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1109 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1110 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1111 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1112 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1113 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1114 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1115 | |
|
|
1116 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1117 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1118 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1119 | #else |
|
|
1120 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1121 | #endif |
|
|
1122 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1123 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1124 | #elif _MSC_VER |
|
|
1125 | #include <stdlib.h> |
|
|
1126 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1127 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1128 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1129 | #else |
|
|
1130 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1131 | ecb_function_ ecb_const uint16_t |
|
|
1132 | ecb_bswap16 (uint16_t x) |
|
|
1133 | { |
|
|
1134 | return ecb_rotl16 (x, 8); |
|
|
1135 | } |
|
|
1136 | |
|
|
1137 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1138 | ecb_function_ ecb_const uint32_t |
|
|
1139 | ecb_bswap32 (uint32_t x) |
|
|
1140 | { |
|
|
1141 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1145 | ecb_function_ ecb_const uint64_t |
|
|
1146 | ecb_bswap64 (uint64_t x) |
|
|
1147 | { |
|
|
1148 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1149 | } |
|
|
1150 | #endif |
|
|
1151 | |
|
|
1152 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1153 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1154 | #else |
|
|
1155 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1156 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1157 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1158 | #endif |
|
|
1159 | |
|
|
1160 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1161 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1162 | |
|
|
1163 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1164 | ecb_inline ecb_const uint32_t |
|
|
1165 | ecb_byteorder_helper (void) |
|
|
1166 | { |
|
|
1167 | /* the union code still generates code under pressure in gcc, */ |
|
|
1168 | /* but less than using pointers, and always seems to */ |
|
|
1169 | /* successfully return a constant. */ |
|
|
1170 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1171 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1172 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1173 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1174 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1175 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1176 | return 0x44332211; |
|
|
1177 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1178 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1179 | #define ECB_BIG_ENDIAN 1 |
|
|
1180 | return 0x11223344; |
|
|
1181 | #else |
|
|
1182 | union |
|
|
1183 | { |
|
|
1184 | uint8_t c[4]; |
|
|
1185 | uint32_t u; |
|
|
1186 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1187 | return u.u; |
|
|
1188 | #endif |
|
|
1189 | } |
|
|
1190 | |
|
|
1191 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1192 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1193 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1194 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1195 | |
|
|
1196 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1197 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1198 | #else |
|
|
1199 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1200 | #endif |
|
|
1201 | |
|
|
1202 | #if ECB_CPP |
|
|
1203 | template<typename T> |
|
|
1204 | static inline T ecb_div_rd (T val, T div) |
|
|
1205 | { |
|
|
1206 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1207 | } |
|
|
1208 | template<typename T> |
|
|
1209 | static inline T ecb_div_ru (T val, T div) |
|
|
1210 | { |
|
|
1211 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1212 | } |
|
|
1213 | #else |
|
|
1214 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1215 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1216 | #endif |
|
|
1217 | |
|
|
1218 | #if ecb_cplusplus_does_not_suck |
|
|
1219 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1220 | template<typename T, int N> |
|
|
1221 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1222 | { |
|
|
1223 | return N; |
|
|
1224 | } |
|
|
1225 | #else |
|
|
1226 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1230 | ecb_function_ ecb_const uint32_t |
|
|
1231 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1232 | { |
|
|
1233 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1234 | int e = (x >> 10) & 0x001f; |
|
|
1235 | unsigned int m = x & 0x03ff; |
|
|
1236 | |
|
|
1237 | if (ecb_expect_false (e == 31)) |
|
|
1238 | /* infinity or NaN */ |
|
|
1239 | e = 255 - (127 - 15); |
|
|
1240 | else if (ecb_expect_false (!e)) |
|
|
1241 | { |
|
|
1242 | if (ecb_expect_true (!m)) |
|
|
1243 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1244 | e = 0 - (127 - 15); |
|
|
1245 | else |
|
|
1246 | { |
|
|
1247 | /* subnormal, renormalise */ |
|
|
1248 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1249 | |
|
|
1250 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1251 | e -= s - 1; |
|
|
1252 | } |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1256 | e += 127 - 15; |
|
|
1257 | |
|
|
1258 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1262 | ecb_function_ ecb_const uint16_t |
|
|
1263 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1264 | { |
|
|
1265 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1266 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1267 | unsigned int m = x & 0x007fffff; |
|
|
1268 | |
|
|
1269 | x &= 0x7fffffff; |
|
|
1270 | |
|
|
1271 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1272 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1273 | { |
|
|
1274 | /* mantissa round-to-even */ |
|
|
1275 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1276 | |
|
|
1277 | /* handle overflow */ |
|
|
1278 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1279 | { |
|
|
1280 | m >>= 1; |
|
|
1281 | e += 1; |
|
|
1282 | } |
|
|
1283 | |
|
|
1284 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1285 | } |
|
|
1286 | |
|
|
1287 | /* handle large numbers and infinity */ |
|
|
1288 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1289 | return s | 0x7c00; |
|
|
1290 | |
|
|
1291 | /* handle zero, subnormals and small numbers */ |
|
|
1292 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1293 | { |
|
|
1294 | /* zero */ |
|
|
1295 | if (ecb_expect_true (!x)) |
|
|
1296 | return s; |
|
|
1297 | |
|
|
1298 | /* handle subnormals */ |
|
|
1299 | |
|
|
1300 | /* too small, will be zero */ |
|
|
1301 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1302 | return s; |
|
|
1303 | |
|
|
1304 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1305 | |
|
|
1306 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1307 | { |
|
|
1308 | unsigned int bits = 14 - e; |
|
|
1309 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1310 | unsigned int even = (m >> bits) & 1; |
|
|
1311 | |
|
|
1312 | /* if this overflows, we will end up with a normalised number */ |
|
|
1313 | m = (m + half + even) >> bits; |
|
|
1314 | } |
|
|
1315 | |
|
|
1316 | return s | m; |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1320 | m >>= 13; |
|
|
1321 | |
|
|
1322 | return s | 0x7c00 | m | !m; |
|
|
1323 | } |
|
|
1324 | |
|
|
1325 | /*******************************************************************************/ |
|
|
1326 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1327 | |
|
|
1328 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1329 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1330 | #if 0 \ |
|
|
1331 | || __i386 || __i386__ \ |
|
|
1332 | || ECB_GCC_AMD64 \ |
|
|
1333 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1334 | || defined __s390__ || defined __s390x__ \ |
|
|
1335 | || defined __mips__ \ |
|
|
1336 | || defined __alpha__ \ |
|
|
1337 | || defined __hppa__ \ |
|
|
1338 | || defined __ia64__ \ |
|
|
1339 | || defined __m68k__ \ |
|
|
1340 | || defined __m88k__ \ |
|
|
1341 | || defined __sh__ \ |
|
|
1342 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1343 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1344 | || defined __aarch64__ |
|
|
1345 | #define ECB_STDFP 1 |
|
|
1346 | #include <string.h> /* for memcpy */ |
|
|
1347 | #else |
|
|
1348 | #define ECB_STDFP 0 |
|
|
1349 | #endif |
|
|
1350 | |
|
|
1351 | #ifndef ECB_NO_LIBM |
|
|
1352 | |
|
|
1353 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1354 | |
|
|
1355 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1356 | #ifdef INFINITY |
|
|
1357 | #define ECB_INFINITY INFINITY |
|
|
1358 | #else |
|
|
1359 | #define ECB_INFINITY HUGE_VAL |
|
|
1360 | #endif |
|
|
1361 | |
|
|
1362 | #ifdef NAN |
|
|
1363 | #define ECB_NAN NAN |
|
|
1364 | #else |
|
|
1365 | #define ECB_NAN ECB_INFINITY |
|
|
1366 | #endif |
|
|
1367 | |
|
|
1368 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1369 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1370 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1371 | #else |
|
|
1372 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1373 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1374 | #endif |
|
|
1375 | |
|
|
1376 | /* convert a float to ieee single/binary32 */ |
|
|
1377 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1378 | ecb_function_ ecb_const uint32_t |
|
|
1379 | ecb_float_to_binary32 (float x) |
|
|
1380 | { |
|
|
1381 | uint32_t r; |
|
|
1382 | |
|
|
1383 | #if ECB_STDFP |
|
|
1384 | memcpy (&r, &x, 4); |
|
|
1385 | #else |
|
|
1386 | /* slow emulation, works for anything but -0 */ |
|
|
1387 | uint32_t m; |
|
|
1388 | int e; |
|
|
1389 | |
|
|
1390 | if (x == 0e0f ) return 0x00000000U; |
|
|
1391 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1392 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1393 | if (x != x ) return 0x7fbfffffU; |
|
|
1394 | |
|
|
1395 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1396 | |
|
|
1397 | r = m & 0x80000000U; |
|
|
1398 | |
|
|
1399 | if (r) |
|
|
1400 | m = -m; |
|
|
1401 | |
|
|
1402 | if (e <= -126) |
|
|
1403 | { |
|
|
1404 | m &= 0xffffffU; |
|
|
1405 | m >>= (-125 - e); |
|
|
1406 | e = -126; |
|
|
1407 | } |
|
|
1408 | |
|
|
1409 | r |= (e + 126) << 23; |
|
|
1410 | r |= m & 0x7fffffU; |
|
|
1411 | #endif |
|
|
1412 | |
|
|
1413 | return r; |
|
|
1414 | } |
|
|
1415 | |
|
|
1416 | /* converts an ieee single/binary32 to a float */ |
|
|
1417 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1418 | ecb_function_ ecb_const float |
|
|
1419 | ecb_binary32_to_float (uint32_t x) |
|
|
1420 | { |
|
|
1421 | float r; |
|
|
1422 | |
|
|
1423 | #if ECB_STDFP |
|
|
1424 | memcpy (&r, &x, 4); |
|
|
1425 | #else |
|
|
1426 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1427 | int neg = x >> 31; |
|
|
1428 | int e = (x >> 23) & 0xffU; |
|
|
1429 | |
|
|
1430 | x &= 0x7fffffU; |
|
|
1431 | |
|
|
1432 | if (e) |
|
|
1433 | x |= 0x800000U; |
|
|
1434 | else |
|
|
1435 | e = 1; |
|
|
1436 | |
|
|
1437 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1438 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1439 | |
|
|
1440 | r = neg ? -r : r; |
|
|
1441 | #endif |
|
|
1442 | |
|
|
1443 | return r; |
|
|
1444 | } |
|
|
1445 | |
|
|
1446 | /* convert a double to ieee double/binary64 */ |
|
|
1447 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1448 | ecb_function_ ecb_const uint64_t |
|
|
1449 | ecb_double_to_binary64 (double x) |
|
|
1450 | { |
|
|
1451 | uint64_t r; |
|
|
1452 | |
|
|
1453 | #if ECB_STDFP |
|
|
1454 | memcpy (&r, &x, 8); |
|
|
1455 | #else |
|
|
1456 | /* slow emulation, works for anything but -0 */ |
|
|
1457 | uint64_t m; |
|
|
1458 | int e; |
|
|
1459 | |
|
|
1460 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1461 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1462 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1463 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1464 | |
|
|
1465 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1466 | |
|
|
1467 | r = m & 0x8000000000000000;; |
|
|
1468 | |
|
|
1469 | if (r) |
|
|
1470 | m = -m; |
|
|
1471 | |
|
|
1472 | if (e <= -1022) |
|
|
1473 | { |
|
|
1474 | m &= 0x1fffffffffffffU; |
|
|
1475 | m >>= (-1021 - e); |
|
|
1476 | e = -1022; |
|
|
1477 | } |
|
|
1478 | |
|
|
1479 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1480 | r |= m & 0xfffffffffffffU; |
|
|
1481 | #endif |
|
|
1482 | |
|
|
1483 | return r; |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | /* converts an ieee double/binary64 to a double */ |
|
|
1487 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1488 | ecb_function_ ecb_const double |
|
|
1489 | ecb_binary64_to_double (uint64_t x) |
|
|
1490 | { |
|
|
1491 | double r; |
|
|
1492 | |
|
|
1493 | #if ECB_STDFP |
|
|
1494 | memcpy (&r, &x, 8); |
|
|
1495 | #else |
|
|
1496 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1497 | int neg = x >> 63; |
|
|
1498 | int e = (x >> 52) & 0x7ffU; |
|
|
1499 | |
|
|
1500 | x &= 0xfffffffffffffU; |
|
|
1501 | |
|
|
1502 | if (e) |
|
|
1503 | x |= 0x10000000000000U; |
|
|
1504 | else |
|
|
1505 | e = 1; |
|
|
1506 | |
|
|
1507 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1508 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1509 | |
|
|
1510 | r = neg ? -r : r; |
|
|
1511 | #endif |
|
|
1512 | |
|
|
1513 | return r; |
|
|
1514 | } |
|
|
1515 | |
|
|
1516 | /* convert a float to ieee half/binary16 */ |
|
|
1517 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1518 | ecb_function_ ecb_const uint16_t |
|
|
1519 | ecb_float_to_binary16 (float x) |
|
|
1520 | { |
|
|
1521 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1522 | } |
|
|
1523 | |
|
|
1524 | /* convert an ieee half/binary16 to float */ |
|
|
1525 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1526 | ecb_function_ ecb_const float |
|
|
1527 | ecb_binary16_to_float (uint16_t x) |
|
|
1528 | { |
|
|
1529 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1530 | } |
|
|
1531 | |
|
|
1532 | #endif |
|
|
1533 | |
|
|
1534 | #endif |
|
|
1535 | |
|
|
1536 | /* ECB.H END */ |
|
|
1537 | |
|
|
1538 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1539 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1540 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1541 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1542 | * libev, in which cases the memory fences become nops. |
|
|
1543 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1544 | * which will then provide the memory fences. |
|
|
1545 | */ |
|
|
1546 | # error "memory fences not defined for your architecture, please report" |
|
|
1547 | #endif |
|
|
1548 | |
|
|
1549 | #ifndef ECB_MEMORY_FENCE |
|
|
1550 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1551 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1552 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1553 | #endif |
|
|
1554 | |
|
|
1555 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1556 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1557 | #define noinline ecb_noinline |
|
|
1558 | |
414 | #define inline_size static inline |
1559 | #define inline_size ecb_inline |
415 | |
1560 | |
416 | #if EV_MINIMAL |
1561 | #if EV_FEATURE_CODE |
417 | # define inline_speed static noinline |
|
|
418 | #else |
|
|
419 | # define inline_speed static inline |
1562 | # define inline_speed ecb_inline |
|
|
1563 | #else |
|
|
1564 | # define inline_speed noinline static |
420 | #endif |
1565 | #endif |
421 | |
1566 | |
422 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
1567 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
423 | |
1568 | |
424 | #if EV_MINPRI == EV_MAXPRI |
1569 | #if EV_MINPRI == EV_MAXPRI |
425 | # define ABSPRI(w) (((W)w), 0) |
1570 | # define ABSPRI(w) (((W)w), 0) |
426 | #else |
1571 | #else |
427 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
1572 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
428 | #endif |
1573 | #endif |
429 | |
1574 | |
430 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
1575 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
431 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
432 | |
1576 | |
433 | typedef ev_watcher *W; |
1577 | typedef ev_watcher *W; |
434 | typedef ev_watcher_list *WL; |
1578 | typedef ev_watcher_list *WL; |
435 | typedef ev_watcher_time *WT; |
1579 | typedef ev_watcher_time *WT; |
436 | |
1580 | |
437 | #define ev_active(w) ((W)(w))->active |
1581 | #define ev_active(w) ((W)(w))->active |
438 | #define ev_at(w) ((WT)(w))->at |
1582 | #define ev_at(w) ((WT)(w))->at |
439 | |
1583 | |
440 | #if EV_USE_REALTIME |
1584 | #if EV_USE_REALTIME |
441 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
1585 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
442 | /* giving it a reasonably high chance of working on typical architetcures */ |
1586 | /* giving it a reasonably high chance of working on typical architectures */ |
443 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
1587 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
444 | #endif |
1588 | #endif |
445 | |
1589 | |
446 | #if EV_USE_MONOTONIC |
1590 | #if EV_USE_MONOTONIC |
447 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
1591 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
448 | #endif |
1592 | #endif |
449 | |
1593 | |
|
|
1594 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1595 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1596 | #endif |
|
|
1597 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1598 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1599 | #endif |
|
|
1600 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1601 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1602 | #endif |
|
|
1603 | |
450 | #ifdef _WIN32 |
1604 | #ifdef _WIN32 |
451 | # include "ev_win32.c" |
1605 | # include "ev_win32.c" |
452 | #endif |
1606 | #endif |
453 | |
1607 | |
454 | /*****************************************************************************/ |
1608 | /*****************************************************************************/ |
455 | |
1609 | |
|
|
1610 | #if EV_USE_LINUXAIO |
|
|
1611 | # include <linux/aio_abi.h> /* probably only needed for aio_context_t */ |
|
|
1612 | #endif |
|
|
1613 | |
|
|
1614 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1615 | |
|
|
1616 | #if EV_USE_FLOOR |
|
|
1617 | # include <math.h> |
|
|
1618 | # define ev_floor(v) floor (v) |
|
|
1619 | #else |
|
|
1620 | |
|
|
1621 | #include <float.h> |
|
|
1622 | |
|
|
1623 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1624 | noinline |
|
|
1625 | static ev_tstamp |
|
|
1626 | ev_floor (ev_tstamp v) |
|
|
1627 | { |
|
|
1628 | /* the choice of shift factor is not terribly important */ |
|
|
1629 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1630 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1631 | #else |
|
|
1632 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1633 | #endif |
|
|
1634 | |
|
|
1635 | /* argument too large for an unsigned long? */ |
|
|
1636 | if (expect_false (v >= shift)) |
|
|
1637 | { |
|
|
1638 | ev_tstamp f; |
|
|
1639 | |
|
|
1640 | if (v == v - 1.) |
|
|
1641 | return v; /* very large number */ |
|
|
1642 | |
|
|
1643 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1644 | return f + ev_floor (v - f); |
|
|
1645 | } |
|
|
1646 | |
|
|
1647 | /* special treatment for negative args? */ |
|
|
1648 | if (expect_false (v < 0.)) |
|
|
1649 | { |
|
|
1650 | ev_tstamp f = -ev_floor (-v); |
|
|
1651 | |
|
|
1652 | return f - (f == v ? 0 : 1); |
|
|
1653 | } |
|
|
1654 | |
|
|
1655 | /* fits into an unsigned long */ |
|
|
1656 | return (unsigned long)v; |
|
|
1657 | } |
|
|
1658 | |
|
|
1659 | #endif |
|
|
1660 | |
|
|
1661 | /*****************************************************************************/ |
|
|
1662 | |
|
|
1663 | #ifdef __linux |
|
|
1664 | # include <sys/utsname.h> |
|
|
1665 | #endif |
|
|
1666 | |
|
|
1667 | noinline ecb_cold |
|
|
1668 | static unsigned int |
|
|
1669 | ev_linux_version (void) |
|
|
1670 | { |
|
|
1671 | #ifdef __linux |
|
|
1672 | unsigned int v = 0; |
|
|
1673 | struct utsname buf; |
|
|
1674 | int i; |
|
|
1675 | char *p = buf.release; |
|
|
1676 | |
|
|
1677 | if (uname (&buf)) |
|
|
1678 | return 0; |
|
|
1679 | |
|
|
1680 | for (i = 3+1; --i; ) |
|
|
1681 | { |
|
|
1682 | unsigned int c = 0; |
|
|
1683 | |
|
|
1684 | for (;;) |
|
|
1685 | { |
|
|
1686 | if (*p >= '0' && *p <= '9') |
|
|
1687 | c = c * 10 + *p++ - '0'; |
|
|
1688 | else |
|
|
1689 | { |
|
|
1690 | p += *p == '.'; |
|
|
1691 | break; |
|
|
1692 | } |
|
|
1693 | } |
|
|
1694 | |
|
|
1695 | v = (v << 8) | c; |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | return v; |
|
|
1699 | #else |
|
|
1700 | return 0; |
|
|
1701 | #endif |
|
|
1702 | } |
|
|
1703 | |
|
|
1704 | /*****************************************************************************/ |
|
|
1705 | |
|
|
1706 | #if EV_AVOID_STDIO |
|
|
1707 | noinline ecb_cold |
|
|
1708 | static void |
|
|
1709 | ev_printerr (const char *msg) |
|
|
1710 | { |
|
|
1711 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1712 | } |
|
|
1713 | #endif |
|
|
1714 | |
456 | static void (*syserr_cb)(const char *msg); |
1715 | static void (*syserr_cb)(const char *msg) EV_NOEXCEPT; |
457 | |
1716 | |
|
|
1717 | ecb_cold |
458 | void |
1718 | void |
459 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1719 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT |
460 | { |
1720 | { |
461 | syserr_cb = cb; |
1721 | syserr_cb = cb; |
462 | } |
1722 | } |
463 | |
1723 | |
464 | static void noinline |
1724 | noinline ecb_cold |
|
|
1725 | static void |
465 | ev_syserr (const char *msg) |
1726 | ev_syserr (const char *msg) |
466 | { |
1727 | { |
467 | if (!msg) |
1728 | if (!msg) |
468 | msg = "(libev) system error"; |
1729 | msg = "(libev) system error"; |
469 | |
1730 | |
470 | if (syserr_cb) |
1731 | if (syserr_cb) |
471 | syserr_cb (msg); |
1732 | syserr_cb (msg); |
472 | else |
1733 | else |
473 | { |
1734 | { |
|
|
1735 | #if EV_AVOID_STDIO |
|
|
1736 | ev_printerr (msg); |
|
|
1737 | ev_printerr (": "); |
|
|
1738 | ev_printerr (strerror (errno)); |
|
|
1739 | ev_printerr ("\n"); |
|
|
1740 | #else |
474 | perror (msg); |
1741 | perror (msg); |
|
|
1742 | #endif |
475 | abort (); |
1743 | abort (); |
476 | } |
1744 | } |
477 | } |
1745 | } |
478 | |
1746 | |
479 | static void * |
1747 | static void * |
480 | ev_realloc_emul (void *ptr, long size) |
1748 | ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT |
481 | { |
1749 | { |
482 | /* some systems, notably openbsd and darwin, fail to properly |
1750 | /* some systems, notably openbsd and darwin, fail to properly |
483 | * implement realloc (x, 0) (as required by both ansi c-98 and |
1751 | * implement realloc (x, 0) (as required by both ansi c-89 and |
484 | * the single unix specification, so work around them here. |
1752 | * the single unix specification, so work around them here. |
|
|
1753 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1754 | * despite documenting it otherwise. |
485 | */ |
1755 | */ |
486 | |
1756 | |
487 | if (size) |
1757 | if (size) |
488 | return realloc (ptr, size); |
1758 | return realloc (ptr, size); |
489 | |
1759 | |
490 | free (ptr); |
1760 | free (ptr); |
491 | return 0; |
1761 | return 0; |
492 | } |
1762 | } |
493 | |
1763 | |
494 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1764 | static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul; |
495 | |
1765 | |
|
|
1766 | ecb_cold |
496 | void |
1767 | void |
497 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1768 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT |
498 | { |
1769 | { |
499 | alloc = cb; |
1770 | alloc = cb; |
500 | } |
1771 | } |
501 | |
1772 | |
502 | inline_speed void * |
1773 | inline_speed void * |
… | |
… | |
504 | { |
1775 | { |
505 | ptr = alloc (ptr, size); |
1776 | ptr = alloc (ptr, size); |
506 | |
1777 | |
507 | if (!ptr && size) |
1778 | if (!ptr && size) |
508 | { |
1779 | { |
|
|
1780 | #if EV_AVOID_STDIO |
|
|
1781 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1782 | #else |
509 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1783 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1784 | #endif |
510 | abort (); |
1785 | abort (); |
511 | } |
1786 | } |
512 | |
1787 | |
513 | return ptr; |
1788 | return ptr; |
514 | } |
1789 | } |
… | |
… | |
525 | typedef struct |
1800 | typedef struct |
526 | { |
1801 | { |
527 | WL head; |
1802 | WL head; |
528 | unsigned char events; /* the events watched for */ |
1803 | unsigned char events; /* the events watched for */ |
529 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
1804 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
530 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
1805 | unsigned char emask; /* some backends store the actual kernel mask in here */ |
531 | unsigned char unused; |
1806 | unsigned char unused; |
532 | #if EV_USE_EPOLL |
1807 | #if EV_USE_EPOLL |
533 | unsigned int egen; /* generation counter to counter epoll bugs */ |
1808 | unsigned int egen; /* generation counter to counter epoll bugs */ |
534 | #endif |
1809 | #endif |
535 | #if EV_SELECT_IS_WINSOCKET |
1810 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
536 | SOCKET handle; |
1811 | SOCKET handle; |
|
|
1812 | #endif |
|
|
1813 | #if EV_USE_IOCP |
|
|
1814 | OVERLAPPED or, ow; |
537 | #endif |
1815 | #endif |
538 | } ANFD; |
1816 | } ANFD; |
539 | |
1817 | |
540 | /* stores the pending event set for a given watcher */ |
1818 | /* stores the pending event set for a given watcher */ |
541 | typedef struct |
1819 | typedef struct |
… | |
… | |
583 | #undef VAR |
1861 | #undef VAR |
584 | }; |
1862 | }; |
585 | #include "ev_wrap.h" |
1863 | #include "ev_wrap.h" |
586 | |
1864 | |
587 | static struct ev_loop default_loop_struct; |
1865 | static struct ev_loop default_loop_struct; |
588 | struct ev_loop *ev_default_loop_ptr; |
1866 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
589 | |
1867 | |
590 | #else |
1868 | #else |
591 | |
1869 | |
592 | ev_tstamp ev_rt_now; |
1870 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
593 | #define VAR(name,decl) static decl; |
1871 | #define VAR(name,decl) static decl; |
594 | #include "ev_vars.h" |
1872 | #include "ev_vars.h" |
595 | #undef VAR |
1873 | #undef VAR |
596 | |
1874 | |
597 | static int ev_default_loop_ptr; |
1875 | static int ev_default_loop_ptr; |
598 | |
1876 | |
599 | #endif |
1877 | #endif |
600 | |
1878 | |
601 | #if EV_MINIMAL < 2 |
1879 | #if EV_FEATURE_API |
602 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
1880 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
603 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
1881 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
604 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
1882 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
605 | #else |
1883 | #else |
606 | # define EV_RELEASE_CB (void)0 |
1884 | # define EV_RELEASE_CB (void)0 |
607 | # define EV_ACQUIRE_CB (void)0 |
1885 | # define EV_ACQUIRE_CB (void)0 |
608 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
1886 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
609 | #endif |
1887 | #endif |
610 | |
1888 | |
611 | #define EVUNLOOP_RECURSE 0x80 |
1889 | #define EVBREAK_RECURSE 0x80 |
612 | |
1890 | |
613 | /*****************************************************************************/ |
1891 | /*****************************************************************************/ |
614 | |
1892 | |
615 | #ifndef EV_HAVE_EV_TIME |
1893 | #ifndef EV_HAVE_EV_TIME |
616 | ev_tstamp |
1894 | ev_tstamp |
617 | ev_time (void) |
1895 | ev_time (void) EV_NOEXCEPT |
618 | { |
1896 | { |
619 | #if EV_USE_REALTIME |
1897 | #if EV_USE_REALTIME |
620 | if (expect_true (have_realtime)) |
1898 | if (expect_true (have_realtime)) |
621 | { |
1899 | { |
622 | struct timespec ts; |
1900 | struct timespec ts; |
… | |
… | |
646 | return ev_time (); |
1924 | return ev_time (); |
647 | } |
1925 | } |
648 | |
1926 | |
649 | #if EV_MULTIPLICITY |
1927 | #if EV_MULTIPLICITY |
650 | ev_tstamp |
1928 | ev_tstamp |
651 | ev_now (EV_P) |
1929 | ev_now (EV_P) EV_NOEXCEPT |
652 | { |
1930 | { |
653 | return ev_rt_now; |
1931 | return ev_rt_now; |
654 | } |
1932 | } |
655 | #endif |
1933 | #endif |
656 | |
1934 | |
657 | void |
1935 | void |
658 | ev_sleep (ev_tstamp delay) |
1936 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
659 | { |
1937 | { |
660 | if (delay > 0.) |
1938 | if (delay > 0.) |
661 | { |
1939 | { |
662 | #if EV_USE_NANOSLEEP |
1940 | #if EV_USE_NANOSLEEP |
663 | struct timespec ts; |
1941 | struct timespec ts; |
664 | |
1942 | |
665 | ts.tv_sec = (time_t)delay; |
1943 | EV_TS_SET (ts, delay); |
666 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
667 | |
|
|
668 | nanosleep (&ts, 0); |
1944 | nanosleep (&ts, 0); |
669 | #elif defined(_WIN32) |
1945 | #elif defined _WIN32 |
|
|
1946 | /* maybe this should round up, as ms is very low resolution */ |
|
|
1947 | /* compared to select (µs) or nanosleep (ns) */ |
670 | Sleep ((unsigned long)(delay * 1e3)); |
1948 | Sleep ((unsigned long)(delay * 1e3)); |
671 | #else |
1949 | #else |
672 | struct timeval tv; |
1950 | struct timeval tv; |
673 | |
|
|
674 | tv.tv_sec = (time_t)delay; |
|
|
675 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
676 | |
1951 | |
677 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
1952 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
678 | /* something not guaranteed by newer posix versions, but guaranteed */ |
1953 | /* something not guaranteed by newer posix versions, but guaranteed */ |
679 | /* by older ones */ |
1954 | /* by older ones */ |
|
|
1955 | EV_TV_SET (tv, delay); |
680 | select (0, 0, 0, 0, &tv); |
1956 | select (0, 0, 0, 0, &tv); |
681 | #endif |
1957 | #endif |
682 | } |
1958 | } |
683 | } |
1959 | } |
684 | |
1960 | |
685 | /*****************************************************************************/ |
1961 | /*****************************************************************************/ |
686 | |
1962 | |
687 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
1963 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
688 | |
1964 | |
689 | /* find a suitable new size for the given array, */ |
1965 | /* find a suitable new size for the given array, */ |
690 | /* hopefully by rounding to a ncie-to-malloc size */ |
1966 | /* hopefully by rounding to a nice-to-malloc size */ |
691 | inline_size int |
1967 | inline_size int |
692 | array_nextsize (int elem, int cur, int cnt) |
1968 | array_nextsize (int elem, int cur, int cnt) |
693 | { |
1969 | { |
694 | int ncur = cur + 1; |
1970 | int ncur = cur + 1; |
695 | |
1971 | |
696 | do |
1972 | do |
697 | ncur <<= 1; |
1973 | ncur <<= 1; |
698 | while (cnt > ncur); |
1974 | while (cnt > ncur); |
699 | |
1975 | |
700 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
1976 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
701 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1977 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
702 | { |
1978 | { |
703 | ncur *= elem; |
1979 | ncur *= elem; |
704 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1980 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
705 | ncur = ncur - sizeof (void *) * 4; |
1981 | ncur = ncur - sizeof (void *) * 4; |
… | |
… | |
707 | } |
1983 | } |
708 | |
1984 | |
709 | return ncur; |
1985 | return ncur; |
710 | } |
1986 | } |
711 | |
1987 | |
712 | static noinline void * |
1988 | noinline ecb_cold |
|
|
1989 | static void * |
713 | array_realloc (int elem, void *base, int *cur, int cnt) |
1990 | array_realloc (int elem, void *base, int *cur, int cnt) |
714 | { |
1991 | { |
715 | *cur = array_nextsize (elem, *cur, cnt); |
1992 | *cur = array_nextsize (elem, *cur, cnt); |
716 | return ev_realloc (base, elem * *cur); |
1993 | return ev_realloc (base, elem * *cur); |
717 | } |
1994 | } |
718 | |
1995 | |
|
|
1996 | #define array_needsize_noinit(base,offset,count) |
|
|
1997 | |
719 | #define array_init_zero(base,count) \ |
1998 | #define array_needsize_zerofill(base,offset,count) \ |
720 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1999 | memset ((void *)(base + offset), 0, sizeof (*(base)) * (count)) |
721 | |
2000 | |
722 | #define array_needsize(type,base,cur,cnt,init) \ |
2001 | #define array_needsize(type,base,cur,cnt,init) \ |
723 | if (expect_false ((cnt) > (cur))) \ |
2002 | if (expect_false ((cnt) > (cur))) \ |
724 | { \ |
2003 | { \ |
725 | int ocur_ = (cur); \ |
2004 | ecb_unused int ocur_ = (cur); \ |
726 | (base) = (type *)array_realloc \ |
2005 | (base) = (type *)array_realloc \ |
727 | (sizeof (type), (base), &(cur), (cnt)); \ |
2006 | (sizeof (type), (base), &(cur), (cnt)); \ |
728 | init ((base) + (ocur_), (cur) - ocur_); \ |
2007 | init ((base), ocur_, ((cur) - ocur_)); \ |
729 | } |
2008 | } |
730 | |
2009 | |
731 | #if 0 |
2010 | #if 0 |
732 | #define array_slim(type,stem) \ |
2011 | #define array_slim(type,stem) \ |
733 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
2012 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
… | |
… | |
742 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
2021 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
743 | |
2022 | |
744 | /*****************************************************************************/ |
2023 | /*****************************************************************************/ |
745 | |
2024 | |
746 | /* dummy callback for pending events */ |
2025 | /* dummy callback for pending events */ |
747 | static void noinline |
2026 | noinline |
|
|
2027 | static void |
748 | pendingcb (EV_P_ ev_prepare *w, int revents) |
2028 | pendingcb (EV_P_ ev_prepare *w, int revents) |
749 | { |
2029 | { |
750 | } |
2030 | } |
751 | |
2031 | |
752 | void noinline |
2032 | noinline |
|
|
2033 | void |
753 | ev_feed_event (EV_P_ void *w, int revents) |
2034 | ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT |
754 | { |
2035 | { |
755 | W w_ = (W)w; |
2036 | W w_ = (W)w; |
756 | int pri = ABSPRI (w_); |
2037 | int pri = ABSPRI (w_); |
757 | |
2038 | |
758 | if (expect_false (w_->pending)) |
2039 | if (expect_false (w_->pending)) |
759 | pendings [pri][w_->pending - 1].events |= revents; |
2040 | pendings [pri][w_->pending - 1].events |= revents; |
760 | else |
2041 | else |
761 | { |
2042 | { |
762 | w_->pending = ++pendingcnt [pri]; |
2043 | w_->pending = ++pendingcnt [pri]; |
763 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
2044 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); |
764 | pendings [pri][w_->pending - 1].w = w_; |
2045 | pendings [pri][w_->pending - 1].w = w_; |
765 | pendings [pri][w_->pending - 1].events = revents; |
2046 | pendings [pri][w_->pending - 1].events = revents; |
766 | } |
2047 | } |
|
|
2048 | |
|
|
2049 | pendingpri = NUMPRI - 1; |
767 | } |
2050 | } |
768 | |
2051 | |
769 | inline_speed void |
2052 | inline_speed void |
770 | feed_reverse (EV_P_ W w) |
2053 | feed_reverse (EV_P_ W w) |
771 | { |
2054 | { |
772 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
2055 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit); |
773 | rfeeds [rfeedcnt++] = w; |
2056 | rfeeds [rfeedcnt++] = w; |
774 | } |
2057 | } |
775 | |
2058 | |
776 | inline_size void |
2059 | inline_size void |
777 | feed_reverse_done (EV_P_ int revents) |
2060 | feed_reverse_done (EV_P_ int revents) |
… | |
… | |
791 | } |
2074 | } |
792 | |
2075 | |
793 | /*****************************************************************************/ |
2076 | /*****************************************************************************/ |
794 | |
2077 | |
795 | inline_speed void |
2078 | inline_speed void |
796 | fd_event_nc (EV_P_ int fd, int revents) |
2079 | fd_event_nocheck (EV_P_ int fd, int revents) |
797 | { |
2080 | { |
798 | ANFD *anfd = anfds + fd; |
2081 | ANFD *anfd = anfds + fd; |
799 | ev_io *w; |
2082 | ev_io *w; |
800 | |
2083 | |
801 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
2084 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
813 | fd_event (EV_P_ int fd, int revents) |
2096 | fd_event (EV_P_ int fd, int revents) |
814 | { |
2097 | { |
815 | ANFD *anfd = anfds + fd; |
2098 | ANFD *anfd = anfds + fd; |
816 | |
2099 | |
817 | if (expect_true (!anfd->reify)) |
2100 | if (expect_true (!anfd->reify)) |
818 | fd_event_nc (EV_A_ fd, revents); |
2101 | fd_event_nocheck (EV_A_ fd, revents); |
819 | } |
2102 | } |
820 | |
2103 | |
821 | void |
2104 | void |
822 | ev_feed_fd_event (EV_P_ int fd, int revents) |
2105 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT |
823 | { |
2106 | { |
824 | if (fd >= 0 && fd < anfdmax) |
2107 | if (fd >= 0 && fd < anfdmax) |
825 | fd_event_nc (EV_A_ fd, revents); |
2108 | fd_event_nocheck (EV_A_ fd, revents); |
826 | } |
2109 | } |
827 | |
2110 | |
828 | /* make sure the external fd watch events are in-sync */ |
2111 | /* make sure the external fd watch events are in-sync */ |
829 | /* with the kernel/libev internal state */ |
2112 | /* with the kernel/libev internal state */ |
830 | inline_size void |
2113 | inline_size void |
831 | fd_reify (EV_P) |
2114 | fd_reify (EV_P) |
832 | { |
2115 | { |
833 | int i; |
2116 | int i; |
834 | |
2117 | |
|
|
2118 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
2119 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2120 | { |
|
|
2121 | int fd = fdchanges [i]; |
|
|
2122 | ANFD *anfd = anfds + fd; |
|
|
2123 | |
|
|
2124 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
2125 | { |
|
|
2126 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2127 | |
|
|
2128 | if (handle != anfd->handle) |
|
|
2129 | { |
|
|
2130 | unsigned long arg; |
|
|
2131 | |
|
|
2132 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2133 | |
|
|
2134 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2135 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
2136 | anfd->events = 0; |
|
|
2137 | anfd->handle = handle; |
|
|
2138 | } |
|
|
2139 | } |
|
|
2140 | } |
|
|
2141 | #endif |
|
|
2142 | |
835 | for (i = 0; i < fdchangecnt; ++i) |
2143 | for (i = 0; i < fdchangecnt; ++i) |
836 | { |
2144 | { |
837 | int fd = fdchanges [i]; |
2145 | int fd = fdchanges [i]; |
838 | ANFD *anfd = anfds + fd; |
2146 | ANFD *anfd = anfds + fd; |
839 | ev_io *w; |
2147 | ev_io *w; |
840 | |
2148 | |
841 | unsigned char events = 0; |
2149 | unsigned char o_events = anfd->events; |
|
|
2150 | unsigned char o_reify = anfd->reify; |
842 | |
2151 | |
843 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
2152 | anfd->reify = 0; |
844 | events |= (unsigned char)w->events; |
|
|
845 | |
2153 | |
846 | #if EV_SELECT_IS_WINSOCKET |
2154 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
847 | if (events) |
|
|
848 | { |
2155 | { |
849 | unsigned long arg; |
2156 | anfd->events = 0; |
850 | #ifdef EV_FD_TO_WIN32_HANDLE |
2157 | |
851 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
2158 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
852 | #else |
2159 | anfd->events |= (unsigned char)w->events; |
853 | anfd->handle = _get_osfhandle (fd); |
2160 | |
854 | #endif |
2161 | if (o_events != anfd->events) |
855 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
2162 | o_reify = EV__IOFDSET; /* actually |= */ |
856 | } |
2163 | } |
857 | #endif |
|
|
858 | |
2164 | |
859 | { |
2165 | if (o_reify & EV__IOFDSET) |
860 | unsigned char o_events = anfd->events; |
|
|
861 | unsigned char o_reify = anfd->reify; |
|
|
862 | |
|
|
863 | anfd->reify = 0; |
|
|
864 | anfd->events = events; |
|
|
865 | |
|
|
866 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
867 | backend_modify (EV_A_ fd, o_events, events); |
2166 | backend_modify (EV_A_ fd, o_events, anfd->events); |
868 | } |
|
|
869 | } |
2167 | } |
870 | |
2168 | |
871 | fdchangecnt = 0; |
2169 | fdchangecnt = 0; |
872 | } |
2170 | } |
873 | |
2171 | |
874 | /* something about the given fd changed */ |
2172 | /* something about the given fd changed */ |
875 | inline_size void |
2173 | inline_size |
|
|
2174 | void |
876 | fd_change (EV_P_ int fd, int flags) |
2175 | fd_change (EV_P_ int fd, int flags) |
877 | { |
2176 | { |
878 | unsigned char reify = anfds [fd].reify; |
2177 | unsigned char reify = anfds [fd].reify; |
879 | anfds [fd].reify |= flags; |
2178 | anfds [fd].reify |= flags; |
880 | |
2179 | |
881 | if (expect_true (!reify)) |
2180 | if (expect_true (!reify)) |
882 | { |
2181 | { |
883 | ++fdchangecnt; |
2182 | ++fdchangecnt; |
884 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
2183 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
885 | fdchanges [fdchangecnt - 1] = fd; |
2184 | fdchanges [fdchangecnt - 1] = fd; |
886 | } |
2185 | } |
887 | } |
2186 | } |
888 | |
2187 | |
889 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
2188 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
890 | inline_speed void |
2189 | inline_speed ecb_cold void |
891 | fd_kill (EV_P_ int fd) |
2190 | fd_kill (EV_P_ int fd) |
892 | { |
2191 | { |
893 | ev_io *w; |
2192 | ev_io *w; |
894 | |
2193 | |
895 | while ((w = (ev_io *)anfds [fd].head)) |
2194 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
897 | ev_io_stop (EV_A_ w); |
2196 | ev_io_stop (EV_A_ w); |
898 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
2197 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
899 | } |
2198 | } |
900 | } |
2199 | } |
901 | |
2200 | |
902 | /* check whether the given fd is atcually valid, for error recovery */ |
2201 | /* check whether the given fd is actually valid, for error recovery */ |
903 | inline_size int |
2202 | inline_size ecb_cold int |
904 | fd_valid (int fd) |
2203 | fd_valid (int fd) |
905 | { |
2204 | { |
906 | #ifdef _WIN32 |
2205 | #ifdef _WIN32 |
907 | return _get_osfhandle (fd) != -1; |
2206 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
908 | #else |
2207 | #else |
909 | return fcntl (fd, F_GETFD) != -1; |
2208 | return fcntl (fd, F_GETFD) != -1; |
910 | #endif |
2209 | #endif |
911 | } |
2210 | } |
912 | |
2211 | |
913 | /* called on EBADF to verify fds */ |
2212 | /* called on EBADF to verify fds */ |
914 | static void noinline |
2213 | noinline ecb_cold |
|
|
2214 | static void |
915 | fd_ebadf (EV_P) |
2215 | fd_ebadf (EV_P) |
916 | { |
2216 | { |
917 | int fd; |
2217 | int fd; |
918 | |
2218 | |
919 | for (fd = 0; fd < anfdmax; ++fd) |
2219 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
921 | if (!fd_valid (fd) && errno == EBADF) |
2221 | if (!fd_valid (fd) && errno == EBADF) |
922 | fd_kill (EV_A_ fd); |
2222 | fd_kill (EV_A_ fd); |
923 | } |
2223 | } |
924 | |
2224 | |
925 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
2225 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
926 | static void noinline |
2226 | noinline ecb_cold |
|
|
2227 | static void |
927 | fd_enomem (EV_P) |
2228 | fd_enomem (EV_P) |
928 | { |
2229 | { |
929 | int fd; |
2230 | int fd; |
930 | |
2231 | |
931 | for (fd = anfdmax; fd--; ) |
2232 | for (fd = anfdmax; fd--; ) |
932 | if (anfds [fd].events) |
2233 | if (anfds [fd].events) |
933 | { |
2234 | { |
934 | fd_kill (EV_A_ fd); |
2235 | fd_kill (EV_A_ fd); |
935 | return; |
2236 | break; |
936 | } |
2237 | } |
937 | } |
2238 | } |
938 | |
2239 | |
939 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
2240 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
940 | static void noinline |
2241 | noinline |
|
|
2242 | static void |
941 | fd_rearm_all (EV_P) |
2243 | fd_rearm_all (EV_P) |
942 | { |
2244 | { |
943 | int fd; |
2245 | int fd; |
944 | |
2246 | |
945 | for (fd = 0; fd < anfdmax; ++fd) |
2247 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
949 | anfds [fd].emask = 0; |
2251 | anfds [fd].emask = 0; |
950 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
2252 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
951 | } |
2253 | } |
952 | } |
2254 | } |
953 | |
2255 | |
|
|
2256 | /* used to prepare libev internal fd's */ |
|
|
2257 | /* this is not fork-safe */ |
|
|
2258 | inline_speed void |
|
|
2259 | fd_intern (int fd) |
|
|
2260 | { |
|
|
2261 | #ifdef _WIN32 |
|
|
2262 | unsigned long arg = 1; |
|
|
2263 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
2264 | #else |
|
|
2265 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
2266 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
2267 | #endif |
|
|
2268 | } |
|
|
2269 | |
954 | /*****************************************************************************/ |
2270 | /*****************************************************************************/ |
955 | |
2271 | |
956 | /* |
2272 | /* |
957 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
2273 | * the heap functions want a real array index. array index 0 is guaranteed to not |
958 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
2274 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
959 | * the branching factor of the d-tree. |
2275 | * the branching factor of the d-tree. |
960 | */ |
2276 | */ |
961 | |
2277 | |
962 | /* |
2278 | /* |
… | |
… | |
1030 | |
2346 | |
1031 | for (;;) |
2347 | for (;;) |
1032 | { |
2348 | { |
1033 | int c = k << 1; |
2349 | int c = k << 1; |
1034 | |
2350 | |
1035 | if (c > N + HEAP0 - 1) |
2351 | if (c >= N + HEAP0) |
1036 | break; |
2352 | break; |
1037 | |
2353 | |
1038 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
2354 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1039 | ? 1 : 0; |
2355 | ? 1 : 0; |
1040 | |
2356 | |
… | |
… | |
1076 | |
2392 | |
1077 | /* move an element suitably so it is in a correct place */ |
2393 | /* move an element suitably so it is in a correct place */ |
1078 | inline_size void |
2394 | inline_size void |
1079 | adjustheap (ANHE *heap, int N, int k) |
2395 | adjustheap (ANHE *heap, int N, int k) |
1080 | { |
2396 | { |
1081 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
2397 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
1082 | upheap (heap, k); |
2398 | upheap (heap, k); |
1083 | else |
2399 | else |
1084 | downheap (heap, N, k); |
2400 | downheap (heap, N, k); |
1085 | } |
2401 | } |
1086 | |
2402 | |
… | |
… | |
1099 | /*****************************************************************************/ |
2415 | /*****************************************************************************/ |
1100 | |
2416 | |
1101 | /* associate signal watchers to a signal signal */ |
2417 | /* associate signal watchers to a signal signal */ |
1102 | typedef struct |
2418 | typedef struct |
1103 | { |
2419 | { |
|
|
2420 | EV_ATOMIC_T pending; |
|
|
2421 | #if EV_MULTIPLICITY |
|
|
2422 | EV_P; |
|
|
2423 | #endif |
1104 | WL head; |
2424 | WL head; |
1105 | EV_ATOMIC_T gotsig; |
|
|
1106 | } ANSIG; |
2425 | } ANSIG; |
1107 | |
2426 | |
1108 | static ANSIG *signals; |
2427 | static ANSIG signals [EV_NSIG - 1]; |
1109 | static int signalmax; |
|
|
1110 | |
|
|
1111 | static EV_ATOMIC_T gotsig; |
|
|
1112 | |
2428 | |
1113 | /*****************************************************************************/ |
2429 | /*****************************************************************************/ |
1114 | |
2430 | |
1115 | /* used to prepare libev internal fd's */ |
2431 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1116 | /* this is not fork-safe */ |
2432 | |
|
|
2433 | noinline ecb_cold |
|
|
2434 | static void |
|
|
2435 | evpipe_init (EV_P) |
|
|
2436 | { |
|
|
2437 | if (!ev_is_active (&pipe_w)) |
|
|
2438 | { |
|
|
2439 | int fds [2]; |
|
|
2440 | |
|
|
2441 | # if EV_USE_EVENTFD |
|
|
2442 | fds [0] = -1; |
|
|
2443 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2444 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2445 | fds [1] = eventfd (0, 0); |
|
|
2446 | |
|
|
2447 | if (fds [1] < 0) |
|
|
2448 | # endif |
|
|
2449 | { |
|
|
2450 | while (pipe (fds)) |
|
|
2451 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2452 | |
|
|
2453 | fd_intern (fds [0]); |
|
|
2454 | } |
|
|
2455 | |
|
|
2456 | evpipe [0] = fds [0]; |
|
|
2457 | |
|
|
2458 | if (evpipe [1] < 0) |
|
|
2459 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2460 | else |
|
|
2461 | { |
|
|
2462 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2463 | /* so that evpipe_write can always rely on its value. */ |
|
|
2464 | /* this branch does not do anything sensible on windows, */ |
|
|
2465 | /* so must not be executed on windows */ |
|
|
2466 | |
|
|
2467 | dup2 (fds [1], evpipe [1]); |
|
|
2468 | close (fds [1]); |
|
|
2469 | } |
|
|
2470 | |
|
|
2471 | fd_intern (evpipe [1]); |
|
|
2472 | |
|
|
2473 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2474 | ev_io_start (EV_A_ &pipe_w); |
|
|
2475 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2476 | } |
|
|
2477 | } |
|
|
2478 | |
1117 | inline_speed void |
2479 | inline_speed void |
1118 | fd_intern (int fd) |
2480 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1119 | { |
2481 | { |
1120 | #ifdef _WIN32 |
2482 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
1121 | unsigned long arg = 1; |
|
|
1122 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1123 | #else |
|
|
1124 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1125 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1126 | #endif |
|
|
1127 | } |
|
|
1128 | |
2483 | |
1129 | static void noinline |
2484 | if (expect_true (*flag)) |
1130 | evpipe_init (EV_P) |
2485 | return; |
1131 | { |
2486 | |
1132 | if (!ev_is_active (&pipe_w)) |
2487 | *flag = 1; |
|
|
2488 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2489 | |
|
|
2490 | pipe_write_skipped = 1; |
|
|
2491 | |
|
|
2492 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2493 | |
|
|
2494 | if (pipe_write_wanted) |
1133 | { |
2495 | { |
|
|
2496 | int old_errno; |
|
|
2497 | |
|
|
2498 | pipe_write_skipped = 0; |
|
|
2499 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2500 | |
|
|
2501 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2502 | |
1134 | #if EV_USE_EVENTFD |
2503 | #if EV_USE_EVENTFD |
1135 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2504 | if (evpipe [0] < 0) |
1136 | if (evfd < 0 && errno == EINVAL) |
|
|
1137 | evfd = eventfd (0, 0); |
|
|
1138 | |
|
|
1139 | if (evfd >= 0) |
|
|
1140 | { |
2505 | { |
1141 | evpipe [0] = -1; |
2506 | uint64_t counter = 1; |
1142 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
2507 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1143 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1144 | } |
2508 | } |
1145 | else |
2509 | else |
1146 | #endif |
2510 | #endif |
1147 | { |
2511 | { |
1148 | while (pipe (evpipe)) |
2512 | #ifdef _WIN32 |
1149 | ev_syserr ("(libev) error creating signal/async pipe"); |
2513 | WSABUF buf; |
1150 | |
2514 | DWORD sent; |
1151 | fd_intern (evpipe [0]); |
2515 | buf.buf = (char *)&buf; |
1152 | fd_intern (evpipe [1]); |
2516 | buf.len = 1; |
1153 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
2517 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2518 | #else |
|
|
2519 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2520 | #endif |
1154 | } |
2521 | } |
1155 | |
|
|
1156 | ev_io_start (EV_A_ &pipe_w); |
|
|
1157 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1158 | } |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | inline_size void |
|
|
1162 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1163 | { |
|
|
1164 | if (!*flag) |
|
|
1165 | { |
|
|
1166 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1167 | |
|
|
1168 | *flag = 1; |
|
|
1169 | |
|
|
1170 | #if EV_USE_EVENTFD |
|
|
1171 | if (evfd >= 0) |
|
|
1172 | { |
|
|
1173 | uint64_t counter = 1; |
|
|
1174 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1175 | } |
|
|
1176 | else |
|
|
1177 | #endif |
|
|
1178 | write (evpipe [1], &old_errno, 1); |
|
|
1179 | |
2522 | |
1180 | errno = old_errno; |
2523 | errno = old_errno; |
1181 | } |
2524 | } |
1182 | } |
2525 | } |
1183 | |
2526 | |
1184 | /* called whenever the libev signal pipe */ |
2527 | /* called whenever the libev signal pipe */ |
1185 | /* got some events (signal, async) */ |
2528 | /* got some events (signal, async) */ |
1186 | static void |
2529 | static void |
1187 | pipecb (EV_P_ ev_io *iow, int revents) |
2530 | pipecb (EV_P_ ev_io *iow, int revents) |
1188 | { |
2531 | { |
|
|
2532 | int i; |
|
|
2533 | |
|
|
2534 | if (revents & EV_READ) |
|
|
2535 | { |
1189 | #if EV_USE_EVENTFD |
2536 | #if EV_USE_EVENTFD |
1190 | if (evfd >= 0) |
2537 | if (evpipe [0] < 0) |
1191 | { |
2538 | { |
1192 | uint64_t counter; |
2539 | uint64_t counter; |
1193 | read (evfd, &counter, sizeof (uint64_t)); |
2540 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1194 | } |
2541 | } |
1195 | else |
2542 | else |
1196 | #endif |
2543 | #endif |
1197 | { |
2544 | { |
1198 | char dummy; |
2545 | char dummy[4]; |
|
|
2546 | #ifdef _WIN32 |
|
|
2547 | WSABUF buf; |
|
|
2548 | DWORD recvd; |
|
|
2549 | DWORD flags = 0; |
|
|
2550 | buf.buf = dummy; |
|
|
2551 | buf.len = sizeof (dummy); |
|
|
2552 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2553 | #else |
1199 | read (evpipe [0], &dummy, 1); |
2554 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2555 | #endif |
|
|
2556 | } |
|
|
2557 | } |
|
|
2558 | |
|
|
2559 | pipe_write_skipped = 0; |
|
|
2560 | |
|
|
2561 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2562 | |
|
|
2563 | #if EV_SIGNAL_ENABLE |
|
|
2564 | if (sig_pending) |
1200 | } |
2565 | { |
|
|
2566 | sig_pending = 0; |
1201 | |
2567 | |
1202 | if (gotsig && ev_is_default_loop (EV_A)) |
2568 | ECB_MEMORY_FENCE; |
1203 | { |
|
|
1204 | int signum; |
|
|
1205 | gotsig = 0; |
|
|
1206 | |
2569 | |
1207 | for (signum = signalmax; signum--; ) |
2570 | for (i = EV_NSIG - 1; i--; ) |
1208 | if (signals [signum].gotsig) |
2571 | if (expect_false (signals [i].pending)) |
1209 | ev_feed_signal_event (EV_A_ signum + 1); |
2572 | ev_feed_signal_event (EV_A_ i + 1); |
1210 | } |
2573 | } |
|
|
2574 | #endif |
1211 | |
2575 | |
1212 | #if EV_ASYNC_ENABLE |
2576 | #if EV_ASYNC_ENABLE |
1213 | if (gotasync) |
2577 | if (async_pending) |
1214 | { |
2578 | { |
1215 | int i; |
2579 | async_pending = 0; |
1216 | gotasync = 0; |
2580 | |
|
|
2581 | ECB_MEMORY_FENCE; |
1217 | |
2582 | |
1218 | for (i = asynccnt; i--; ) |
2583 | for (i = asynccnt; i--; ) |
1219 | if (asyncs [i]->sent) |
2584 | if (asyncs [i]->sent) |
1220 | { |
2585 | { |
1221 | asyncs [i]->sent = 0; |
2586 | asyncs [i]->sent = 0; |
|
|
2587 | ECB_MEMORY_FENCE_RELEASE; |
1222 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
2588 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
1223 | } |
2589 | } |
1224 | } |
2590 | } |
1225 | #endif |
2591 | #endif |
1226 | } |
2592 | } |
1227 | |
2593 | |
1228 | /*****************************************************************************/ |
2594 | /*****************************************************************************/ |
1229 | |
2595 | |
|
|
2596 | void |
|
|
2597 | ev_feed_signal (int signum) EV_NOEXCEPT |
|
|
2598 | { |
|
|
2599 | #if EV_MULTIPLICITY |
|
|
2600 | EV_P; |
|
|
2601 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2602 | EV_A = signals [signum - 1].loop; |
|
|
2603 | |
|
|
2604 | if (!EV_A) |
|
|
2605 | return; |
|
|
2606 | #endif |
|
|
2607 | |
|
|
2608 | signals [signum - 1].pending = 1; |
|
|
2609 | evpipe_write (EV_A_ &sig_pending); |
|
|
2610 | } |
|
|
2611 | |
1230 | static void |
2612 | static void |
1231 | ev_sighandler (int signum) |
2613 | ev_sighandler (int signum) |
1232 | { |
2614 | { |
|
|
2615 | #ifdef _WIN32 |
|
|
2616 | signal (signum, ev_sighandler); |
|
|
2617 | #endif |
|
|
2618 | |
|
|
2619 | ev_feed_signal (signum); |
|
|
2620 | } |
|
|
2621 | |
|
|
2622 | noinline |
|
|
2623 | void |
|
|
2624 | ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT |
|
|
2625 | { |
|
|
2626 | WL w; |
|
|
2627 | |
|
|
2628 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2629 | return; |
|
|
2630 | |
|
|
2631 | --signum; |
|
|
2632 | |
1233 | #if EV_MULTIPLICITY |
2633 | #if EV_MULTIPLICITY |
1234 | struct ev_loop *loop = &default_loop_struct; |
2634 | /* it is permissible to try to feed a signal to the wrong loop */ |
1235 | #endif |
2635 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
1236 | |
2636 | |
1237 | #if _WIN32 |
2637 | if (expect_false (signals [signum].loop != EV_A)) |
1238 | signal (signum, ev_sighandler); |
|
|
1239 | #endif |
|
|
1240 | |
|
|
1241 | signals [signum - 1].gotsig = 1; |
|
|
1242 | evpipe_write (EV_A_ &gotsig); |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | void noinline |
|
|
1246 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1247 | { |
|
|
1248 | WL w; |
|
|
1249 | |
|
|
1250 | #if EV_MULTIPLICITY |
|
|
1251 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1252 | #endif |
|
|
1253 | |
|
|
1254 | --signum; |
|
|
1255 | |
|
|
1256 | if (signum < 0 || signum >= signalmax) |
|
|
1257 | return; |
2638 | return; |
|
|
2639 | #endif |
1258 | |
2640 | |
1259 | signals [signum].gotsig = 0; |
2641 | signals [signum].pending = 0; |
|
|
2642 | ECB_MEMORY_FENCE_RELEASE; |
1260 | |
2643 | |
1261 | for (w = signals [signum].head; w; w = w->next) |
2644 | for (w = signals [signum].head; w; w = w->next) |
1262 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2645 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1263 | } |
2646 | } |
1264 | |
2647 | |
1265 | #if EV_USE_SIGNALFD |
2648 | #if EV_USE_SIGNALFD |
1266 | static void |
2649 | static void |
1267 | sigfdcb (EV_P_ ev_io *iow, int revents) |
2650 | sigfdcb (EV_P_ ev_io *iow, int revents) |
1268 | { |
2651 | { |
1269 | struct signalfd_siginfo si[4], *sip; |
2652 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
1270 | |
2653 | |
1271 | for (;;) |
2654 | for (;;) |
1272 | { |
2655 | { |
1273 | ssize_t res = read (sigfd, si, sizeof (si)); |
2656 | ssize_t res = read (sigfd, si, sizeof (si)); |
1274 | |
2657 | |
… | |
… | |
1280 | break; |
2663 | break; |
1281 | } |
2664 | } |
1282 | } |
2665 | } |
1283 | #endif |
2666 | #endif |
1284 | |
2667 | |
|
|
2668 | #endif |
|
|
2669 | |
1285 | /*****************************************************************************/ |
2670 | /*****************************************************************************/ |
1286 | |
2671 | |
|
|
2672 | #if EV_CHILD_ENABLE |
1287 | static WL childs [EV_PID_HASHSIZE]; |
2673 | static WL childs [EV_PID_HASHSIZE]; |
1288 | |
|
|
1289 | #ifndef _WIN32 |
|
|
1290 | |
2674 | |
1291 | static ev_signal childev; |
2675 | static ev_signal childev; |
1292 | |
2676 | |
1293 | #ifndef WIFCONTINUED |
2677 | #ifndef WIFCONTINUED |
1294 | # define WIFCONTINUED(status) 0 |
2678 | # define WIFCONTINUED(status) 0 |
… | |
… | |
1299 | child_reap (EV_P_ int chain, int pid, int status) |
2683 | child_reap (EV_P_ int chain, int pid, int status) |
1300 | { |
2684 | { |
1301 | ev_child *w; |
2685 | ev_child *w; |
1302 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
2686 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
1303 | |
2687 | |
1304 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
2688 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
1305 | { |
2689 | { |
1306 | if ((w->pid == pid || !w->pid) |
2690 | if ((w->pid == pid || !w->pid) |
1307 | && (!traced || (w->flags & 1))) |
2691 | && (!traced || (w->flags & 1))) |
1308 | { |
2692 | { |
1309 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
2693 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
… | |
… | |
1334 | /* make sure we are called again until all children have been reaped */ |
2718 | /* make sure we are called again until all children have been reaped */ |
1335 | /* we need to do it this way so that the callback gets called before we continue */ |
2719 | /* we need to do it this way so that the callback gets called before we continue */ |
1336 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
2720 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1337 | |
2721 | |
1338 | child_reap (EV_A_ pid, pid, status); |
2722 | child_reap (EV_A_ pid, pid, status); |
1339 | if (EV_PID_HASHSIZE > 1) |
2723 | if ((EV_PID_HASHSIZE) > 1) |
1340 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
2724 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1341 | } |
2725 | } |
1342 | |
2726 | |
1343 | #endif |
2727 | #endif |
1344 | |
2728 | |
1345 | /*****************************************************************************/ |
2729 | /*****************************************************************************/ |
1346 | |
2730 | |
|
|
2731 | #if EV_USE_IOCP |
|
|
2732 | # include "ev_iocp.c" |
|
|
2733 | #endif |
1347 | #if EV_USE_PORT |
2734 | #if EV_USE_PORT |
1348 | # include "ev_port.c" |
2735 | # include "ev_port.c" |
1349 | #endif |
2736 | #endif |
1350 | #if EV_USE_KQUEUE |
2737 | #if EV_USE_KQUEUE |
1351 | # include "ev_kqueue.c" |
2738 | # include "ev_kqueue.c" |
1352 | #endif |
2739 | #endif |
1353 | #if EV_USE_EPOLL |
2740 | #if EV_USE_EPOLL |
1354 | # include "ev_epoll.c" |
2741 | # include "ev_epoll.c" |
1355 | #endif |
2742 | #endif |
|
|
2743 | #if EV_USE_LINUXAIO |
|
|
2744 | # include "ev_linuxaio.c" |
|
|
2745 | #endif |
1356 | #if EV_USE_POLL |
2746 | #if EV_USE_POLL |
1357 | # include "ev_poll.c" |
2747 | # include "ev_poll.c" |
1358 | #endif |
2748 | #endif |
1359 | #if EV_USE_SELECT |
2749 | #if EV_USE_SELECT |
1360 | # include "ev_select.c" |
2750 | # include "ev_select.c" |
1361 | #endif |
2751 | #endif |
1362 | |
2752 | |
1363 | int |
2753 | ecb_cold int |
1364 | ev_version_major (void) |
2754 | ev_version_major (void) EV_NOEXCEPT |
1365 | { |
2755 | { |
1366 | return EV_VERSION_MAJOR; |
2756 | return EV_VERSION_MAJOR; |
1367 | } |
2757 | } |
1368 | |
2758 | |
1369 | int |
2759 | ecb_cold int |
1370 | ev_version_minor (void) |
2760 | ev_version_minor (void) EV_NOEXCEPT |
1371 | { |
2761 | { |
1372 | return EV_VERSION_MINOR; |
2762 | return EV_VERSION_MINOR; |
1373 | } |
2763 | } |
1374 | |
2764 | |
1375 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2765 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1376 | int inline_size |
2766 | inline_size ecb_cold int |
1377 | enable_secure (void) |
2767 | enable_secure (void) |
1378 | { |
2768 | { |
1379 | #ifdef _WIN32 |
2769 | #ifdef _WIN32 |
1380 | return 0; |
2770 | return 0; |
1381 | #else |
2771 | #else |
1382 | return getuid () != geteuid () |
2772 | return getuid () != geteuid () |
1383 | || getgid () != getegid (); |
2773 | || getgid () != getegid (); |
1384 | #endif |
2774 | #endif |
1385 | } |
2775 | } |
1386 | |
2776 | |
|
|
2777 | ecb_cold |
1387 | unsigned int |
2778 | unsigned int |
1388 | ev_supported_backends (void) |
2779 | ev_supported_backends (void) EV_NOEXCEPT |
1389 | { |
2780 | { |
1390 | unsigned int flags = 0; |
2781 | unsigned int flags = 0; |
1391 | |
2782 | |
1392 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2783 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1393 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
2784 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
1394 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
2785 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2786 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
1395 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
2787 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
1396 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2788 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
1397 | |
2789 | |
1398 | return flags; |
2790 | return flags; |
1399 | } |
2791 | } |
1400 | |
2792 | |
|
|
2793 | ecb_cold |
1401 | unsigned int |
2794 | unsigned int |
1402 | ev_recommended_backends (void) |
2795 | ev_recommended_backends (void) EV_NOEXCEPT |
1403 | { |
2796 | { |
1404 | unsigned int flags = ev_supported_backends (); |
2797 | unsigned int flags = ev_supported_backends (); |
1405 | |
2798 | |
1406 | #ifndef __NetBSD__ |
2799 | #ifndef __NetBSD__ |
1407 | /* kqueue is borked on everything but netbsd apparently */ |
2800 | /* kqueue is borked on everything but netbsd apparently */ |
… | |
… | |
1411 | #ifdef __APPLE__ |
2804 | #ifdef __APPLE__ |
1412 | /* only select works correctly on that "unix-certified" platform */ |
2805 | /* only select works correctly on that "unix-certified" platform */ |
1413 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
2806 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1414 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
2807 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1415 | #endif |
2808 | #endif |
|
|
2809 | #ifdef __FreeBSD__ |
|
|
2810 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2811 | #endif |
|
|
2812 | |
|
|
2813 | /* TODO: linuxaio is very experimental */ |
|
|
2814 | #if !EV_RECOMMEND_LINUXAIO |
|
|
2815 | flags &= ~EVBACKEND_LINUXAIO; |
|
|
2816 | #endif |
1416 | |
2817 | |
1417 | return flags; |
2818 | return flags; |
1418 | } |
2819 | } |
1419 | |
2820 | |
|
|
2821 | ecb_cold |
1420 | unsigned int |
2822 | unsigned int |
1421 | ev_embeddable_backends (void) |
2823 | ev_embeddable_backends (void) EV_NOEXCEPT |
1422 | { |
2824 | { |
1423 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2825 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1424 | |
2826 | |
1425 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2827 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1426 | /* please fix it and tell me how to detect the fix */ |
2828 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1427 | flags &= ~EVBACKEND_EPOLL; |
2829 | flags &= ~EVBACKEND_EPOLL; |
1428 | |
2830 | |
1429 | return flags; |
2831 | return flags; |
1430 | } |
2832 | } |
1431 | |
2833 | |
1432 | unsigned int |
2834 | unsigned int |
1433 | ev_backend (EV_P) |
2835 | ev_backend (EV_P) EV_NOEXCEPT |
1434 | { |
2836 | { |
1435 | return backend; |
2837 | return backend; |
1436 | } |
2838 | } |
1437 | |
2839 | |
1438 | #if EV_MINIMAL < 2 |
2840 | #if EV_FEATURE_API |
1439 | unsigned int |
2841 | unsigned int |
1440 | ev_loop_count (EV_P) |
2842 | ev_iteration (EV_P) EV_NOEXCEPT |
1441 | { |
2843 | { |
1442 | return loop_count; |
2844 | return loop_count; |
1443 | } |
2845 | } |
1444 | |
2846 | |
1445 | unsigned int |
2847 | unsigned int |
1446 | ev_loop_depth (EV_P) |
2848 | ev_depth (EV_P) EV_NOEXCEPT |
1447 | { |
2849 | { |
1448 | return loop_depth; |
2850 | return loop_depth; |
1449 | } |
2851 | } |
1450 | |
2852 | |
1451 | void |
2853 | void |
1452 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
2854 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1453 | { |
2855 | { |
1454 | io_blocktime = interval; |
2856 | io_blocktime = interval; |
1455 | } |
2857 | } |
1456 | |
2858 | |
1457 | void |
2859 | void |
1458 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
2860 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
1459 | { |
2861 | { |
1460 | timeout_blocktime = interval; |
2862 | timeout_blocktime = interval; |
1461 | } |
2863 | } |
1462 | |
2864 | |
1463 | void |
2865 | void |
1464 | ev_set_userdata (EV_P_ void *data) |
2866 | ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT |
1465 | { |
2867 | { |
1466 | userdata = data; |
2868 | userdata = data; |
1467 | } |
2869 | } |
1468 | |
2870 | |
1469 | void * |
2871 | void * |
1470 | ev_userdata (EV_P) |
2872 | ev_userdata (EV_P) EV_NOEXCEPT |
1471 | { |
2873 | { |
1472 | return userdata; |
2874 | return userdata; |
1473 | } |
2875 | } |
1474 | |
2876 | |
|
|
2877 | void |
1475 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2878 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT |
1476 | { |
2879 | { |
1477 | invoke_cb = invoke_pending_cb; |
2880 | invoke_cb = invoke_pending_cb; |
1478 | } |
2881 | } |
1479 | |
2882 | |
|
|
2883 | void |
1480 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2884 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT |
1481 | { |
2885 | { |
1482 | release_cb = release; |
2886 | release_cb = release; |
1483 | acquire_cb = acquire; |
2887 | acquire_cb = acquire; |
1484 | } |
2888 | } |
1485 | #endif |
2889 | #endif |
1486 | |
2890 | |
1487 | /* initialise a loop structure, must be zero-initialised */ |
2891 | /* initialise a loop structure, must be zero-initialised */ |
1488 | static void noinline |
2892 | noinline ecb_cold |
|
|
2893 | static void |
1489 | loop_init (EV_P_ unsigned int flags) |
2894 | loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT |
1490 | { |
2895 | { |
1491 | if (!backend) |
2896 | if (!backend) |
1492 | { |
2897 | { |
|
|
2898 | origflags = flags; |
|
|
2899 | |
1493 | #if EV_USE_REALTIME |
2900 | #if EV_USE_REALTIME |
1494 | if (!have_realtime) |
2901 | if (!have_realtime) |
1495 | { |
2902 | { |
1496 | struct timespec ts; |
2903 | struct timespec ts; |
1497 | |
2904 | |
… | |
… | |
1508 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
2915 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1509 | have_monotonic = 1; |
2916 | have_monotonic = 1; |
1510 | } |
2917 | } |
1511 | #endif |
2918 | #endif |
1512 | |
2919 | |
1513 | ev_rt_now = ev_time (); |
|
|
1514 | mn_now = get_clock (); |
|
|
1515 | now_floor = mn_now; |
|
|
1516 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1517 | #if EV_MINIMAL < 2 |
|
|
1518 | invoke_cb = ev_invoke_pending; |
|
|
1519 | #endif |
|
|
1520 | |
|
|
1521 | io_blocktime = 0.; |
|
|
1522 | timeout_blocktime = 0.; |
|
|
1523 | backend = 0; |
|
|
1524 | backend_fd = -1; |
|
|
1525 | gotasync = 0; |
|
|
1526 | #if EV_USE_INOTIFY |
|
|
1527 | fs_fd = -2; |
|
|
1528 | #endif |
|
|
1529 | #if EV_USE_SIGNALFD |
|
|
1530 | sigfd = -2; |
|
|
1531 | #endif |
|
|
1532 | |
|
|
1533 | /* pid check not overridable via env */ |
2920 | /* pid check not overridable via env */ |
1534 | #ifndef _WIN32 |
2921 | #ifndef _WIN32 |
1535 | if (flags & EVFLAG_FORKCHECK) |
2922 | if (flags & EVFLAG_FORKCHECK) |
1536 | curpid = getpid (); |
2923 | curpid = getpid (); |
1537 | #endif |
2924 | #endif |
… | |
… | |
1539 | if (!(flags & EVFLAG_NOENV) |
2926 | if (!(flags & EVFLAG_NOENV) |
1540 | && !enable_secure () |
2927 | && !enable_secure () |
1541 | && getenv ("LIBEV_FLAGS")) |
2928 | && getenv ("LIBEV_FLAGS")) |
1542 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2929 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1543 | |
2930 | |
1544 | if (!(flags & 0x0000ffffU)) |
2931 | ev_rt_now = ev_time (); |
|
|
2932 | mn_now = get_clock (); |
|
|
2933 | now_floor = mn_now; |
|
|
2934 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2935 | #if EV_FEATURE_API |
|
|
2936 | invoke_cb = ev_invoke_pending; |
|
|
2937 | #endif |
|
|
2938 | |
|
|
2939 | io_blocktime = 0.; |
|
|
2940 | timeout_blocktime = 0.; |
|
|
2941 | backend = 0; |
|
|
2942 | backend_fd = -1; |
|
|
2943 | sig_pending = 0; |
|
|
2944 | #if EV_ASYNC_ENABLE |
|
|
2945 | async_pending = 0; |
|
|
2946 | #endif |
|
|
2947 | pipe_write_skipped = 0; |
|
|
2948 | pipe_write_wanted = 0; |
|
|
2949 | evpipe [0] = -1; |
|
|
2950 | evpipe [1] = -1; |
|
|
2951 | #if EV_USE_INOTIFY |
|
|
2952 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2953 | #endif |
|
|
2954 | #if EV_USE_SIGNALFD |
|
|
2955 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2956 | #endif |
|
|
2957 | |
|
|
2958 | if (!(flags & EVBACKEND_MASK)) |
1545 | flags |= ev_recommended_backends (); |
2959 | flags |= ev_recommended_backends (); |
1546 | |
2960 | |
|
|
2961 | #if EV_USE_IOCP |
|
|
2962 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2963 | #endif |
1547 | #if EV_USE_PORT |
2964 | #if EV_USE_PORT |
1548 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2965 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1549 | #endif |
2966 | #endif |
1550 | #if EV_USE_KQUEUE |
2967 | #if EV_USE_KQUEUE |
1551 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2968 | if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); |
|
|
2969 | #endif |
|
|
2970 | #if EV_USE_LINUXAIO |
|
|
2971 | if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); |
1552 | #endif |
2972 | #endif |
1553 | #if EV_USE_EPOLL |
2973 | #if EV_USE_EPOLL |
1554 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
2974 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
1555 | #endif |
2975 | #endif |
1556 | #if EV_USE_POLL |
2976 | #if EV_USE_POLL |
1557 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
2977 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
1558 | #endif |
2978 | #endif |
1559 | #if EV_USE_SELECT |
2979 | #if EV_USE_SELECT |
1560 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
2980 | if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags); |
1561 | #endif |
2981 | #endif |
1562 | |
2982 | |
1563 | ev_prepare_init (&pending_w, pendingcb); |
2983 | ev_prepare_init (&pending_w, pendingcb); |
1564 | |
2984 | |
|
|
2985 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1565 | ev_init (&pipe_w, pipecb); |
2986 | ev_init (&pipe_w, pipecb); |
1566 | ev_set_priority (&pipe_w, EV_MAXPRI); |
2987 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2988 | #endif |
1567 | } |
2989 | } |
1568 | } |
2990 | } |
1569 | |
2991 | |
1570 | /* free up a loop structure */ |
2992 | /* free up a loop structure */ |
1571 | static void noinline |
2993 | ecb_cold |
|
|
2994 | void |
1572 | loop_destroy (EV_P) |
2995 | ev_loop_destroy (EV_P) |
1573 | { |
2996 | { |
1574 | int i; |
2997 | int i; |
|
|
2998 | |
|
|
2999 | #if EV_MULTIPLICITY |
|
|
3000 | /* mimic free (0) */ |
|
|
3001 | if (!EV_A) |
|
|
3002 | return; |
|
|
3003 | #endif |
|
|
3004 | |
|
|
3005 | #if EV_CLEANUP_ENABLE |
|
|
3006 | /* queue cleanup watchers (and execute them) */ |
|
|
3007 | if (expect_false (cleanupcnt)) |
|
|
3008 | { |
|
|
3009 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
3010 | EV_INVOKE_PENDING; |
|
|
3011 | } |
|
|
3012 | #endif |
|
|
3013 | |
|
|
3014 | #if EV_CHILD_ENABLE |
|
|
3015 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
3016 | { |
|
|
3017 | ev_ref (EV_A); /* child watcher */ |
|
|
3018 | ev_signal_stop (EV_A_ &childev); |
|
|
3019 | } |
|
|
3020 | #endif |
1575 | |
3021 | |
1576 | if (ev_is_active (&pipe_w)) |
3022 | if (ev_is_active (&pipe_w)) |
1577 | { |
3023 | { |
1578 | /*ev_ref (EV_A);*/ |
3024 | /*ev_ref (EV_A);*/ |
1579 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
3025 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1580 | |
3026 | |
1581 | #if EV_USE_EVENTFD |
3027 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
1582 | if (evfd >= 0) |
3028 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
1583 | close (evfd); |
|
|
1584 | #endif |
|
|
1585 | |
|
|
1586 | if (evpipe [0] >= 0) |
|
|
1587 | { |
|
|
1588 | close (evpipe [0]); |
|
|
1589 | close (evpipe [1]); |
|
|
1590 | } |
|
|
1591 | } |
3029 | } |
1592 | |
3030 | |
1593 | #if EV_USE_SIGNALFD |
3031 | #if EV_USE_SIGNALFD |
1594 | if (ev_is_active (&sigfd_w)) |
3032 | if (ev_is_active (&sigfd_w)) |
1595 | { |
|
|
1596 | /*ev_ref (EV_A);*/ |
|
|
1597 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1598 | |
|
|
1599 | close (sigfd); |
3033 | close (sigfd); |
1600 | } |
|
|
1601 | #endif |
3034 | #endif |
1602 | |
3035 | |
1603 | #if EV_USE_INOTIFY |
3036 | #if EV_USE_INOTIFY |
1604 | if (fs_fd >= 0) |
3037 | if (fs_fd >= 0) |
1605 | close (fs_fd); |
3038 | close (fs_fd); |
1606 | #endif |
3039 | #endif |
1607 | |
3040 | |
1608 | if (backend_fd >= 0) |
3041 | if (backend_fd >= 0) |
1609 | close (backend_fd); |
3042 | close (backend_fd); |
1610 | |
3043 | |
|
|
3044 | #if EV_USE_IOCP |
|
|
3045 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
3046 | #endif |
1611 | #if EV_USE_PORT |
3047 | #if EV_USE_PORT |
1612 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
3048 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1613 | #endif |
3049 | #endif |
1614 | #if EV_USE_KQUEUE |
3050 | #if EV_USE_KQUEUE |
1615 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
3051 | if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); |
|
|
3052 | #endif |
|
|
3053 | #if EV_USE_LINUXAIO |
|
|
3054 | if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); |
1616 | #endif |
3055 | #endif |
1617 | #if EV_USE_EPOLL |
3056 | #if EV_USE_EPOLL |
1618 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
3057 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
1619 | #endif |
3058 | #endif |
1620 | #if EV_USE_POLL |
3059 | #if EV_USE_POLL |
1621 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
3060 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
1622 | #endif |
3061 | #endif |
1623 | #if EV_USE_SELECT |
3062 | #if EV_USE_SELECT |
1624 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
3063 | if (backend == EVBACKEND_SELECT ) select_destroy (EV_A); |
1625 | #endif |
3064 | #endif |
1626 | |
3065 | |
1627 | for (i = NUMPRI; i--; ) |
3066 | for (i = NUMPRI; i--; ) |
1628 | { |
3067 | { |
1629 | array_free (pending, [i]); |
3068 | array_free (pending, [i]); |
1630 | #if EV_IDLE_ENABLE |
3069 | #if EV_IDLE_ENABLE |
1631 | array_free (idle, [i]); |
3070 | array_free (idle, [i]); |
1632 | #endif |
3071 | #endif |
1633 | } |
3072 | } |
1634 | |
3073 | |
1635 | ev_free (anfds); anfdmax = 0; |
3074 | ev_free (anfds); anfds = 0; anfdmax = 0; |
1636 | |
3075 | |
1637 | /* have to use the microsoft-never-gets-it-right macro */ |
3076 | /* have to use the microsoft-never-gets-it-right macro */ |
1638 | array_free (rfeed, EMPTY); |
3077 | array_free (rfeed, EMPTY); |
1639 | array_free (fdchange, EMPTY); |
3078 | array_free (fdchange, EMPTY); |
1640 | array_free (timer, EMPTY); |
3079 | array_free (timer, EMPTY); |
… | |
… | |
1642 | array_free (periodic, EMPTY); |
3081 | array_free (periodic, EMPTY); |
1643 | #endif |
3082 | #endif |
1644 | #if EV_FORK_ENABLE |
3083 | #if EV_FORK_ENABLE |
1645 | array_free (fork, EMPTY); |
3084 | array_free (fork, EMPTY); |
1646 | #endif |
3085 | #endif |
|
|
3086 | #if EV_CLEANUP_ENABLE |
|
|
3087 | array_free (cleanup, EMPTY); |
|
|
3088 | #endif |
1647 | array_free (prepare, EMPTY); |
3089 | array_free (prepare, EMPTY); |
1648 | array_free (check, EMPTY); |
3090 | array_free (check, EMPTY); |
1649 | #if EV_ASYNC_ENABLE |
3091 | #if EV_ASYNC_ENABLE |
1650 | array_free (async, EMPTY); |
3092 | array_free (async, EMPTY); |
1651 | #endif |
3093 | #endif |
1652 | |
3094 | |
1653 | backend = 0; |
3095 | backend = 0; |
|
|
3096 | |
|
|
3097 | #if EV_MULTIPLICITY |
|
|
3098 | if (ev_is_default_loop (EV_A)) |
|
|
3099 | #endif |
|
|
3100 | ev_default_loop_ptr = 0; |
|
|
3101 | #if EV_MULTIPLICITY |
|
|
3102 | else |
|
|
3103 | ev_free (EV_A); |
|
|
3104 | #endif |
1654 | } |
3105 | } |
1655 | |
3106 | |
1656 | #if EV_USE_INOTIFY |
3107 | #if EV_USE_INOTIFY |
1657 | inline_size void infy_fork (EV_P); |
3108 | inline_size void infy_fork (EV_P); |
1658 | #endif |
3109 | #endif |
1659 | |
3110 | |
1660 | inline_size void |
3111 | inline_size void |
1661 | loop_fork (EV_P) |
3112 | loop_fork (EV_P) |
1662 | { |
3113 | { |
1663 | #if EV_USE_PORT |
3114 | #if EV_USE_PORT |
1664 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
3115 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1665 | #endif |
3116 | #endif |
1666 | #if EV_USE_KQUEUE |
3117 | #if EV_USE_KQUEUE |
1667 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
3118 | if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); |
|
|
3119 | #endif |
|
|
3120 | #if EV_USE_LINUXAIO |
|
|
3121 | if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); |
1668 | #endif |
3122 | #endif |
1669 | #if EV_USE_EPOLL |
3123 | #if EV_USE_EPOLL |
1670 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
3124 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1671 | #endif |
3125 | #endif |
1672 | #if EV_USE_INOTIFY |
3126 | #if EV_USE_INOTIFY |
1673 | infy_fork (EV_A); |
3127 | infy_fork (EV_A); |
1674 | #endif |
3128 | #endif |
1675 | |
3129 | |
|
|
3130 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1676 | if (ev_is_active (&pipe_w)) |
3131 | if (ev_is_active (&pipe_w) && postfork != 2) |
1677 | { |
3132 | { |
1678 | /* this "locks" the handlers against writing to the pipe */ |
3133 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1679 | /* while we modify the fd vars */ |
|
|
1680 | gotsig = 1; |
|
|
1681 | #if EV_ASYNC_ENABLE |
|
|
1682 | gotasync = 1; |
|
|
1683 | #endif |
|
|
1684 | |
3134 | |
1685 | ev_ref (EV_A); |
3135 | ev_ref (EV_A); |
1686 | ev_io_stop (EV_A_ &pipe_w); |
3136 | ev_io_stop (EV_A_ &pipe_w); |
1687 | |
3137 | |
1688 | #if EV_USE_EVENTFD |
|
|
1689 | if (evfd >= 0) |
|
|
1690 | close (evfd); |
|
|
1691 | #endif |
|
|
1692 | |
|
|
1693 | if (evpipe [0] >= 0) |
3138 | if (evpipe [0] >= 0) |
1694 | { |
3139 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1695 | close (evpipe [0]); |
|
|
1696 | close (evpipe [1]); |
|
|
1697 | } |
|
|
1698 | |
3140 | |
1699 | evpipe_init (EV_A); |
3141 | evpipe_init (EV_A); |
1700 | /* now iterate over everything, in case we missed something */ |
3142 | /* iterate over everything, in case we missed something before */ |
1701 | pipecb (EV_A_ &pipe_w, EV_READ); |
3143 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
1702 | } |
3144 | } |
|
|
3145 | #endif |
1703 | |
3146 | |
1704 | postfork = 0; |
3147 | postfork = 0; |
1705 | } |
3148 | } |
1706 | |
3149 | |
1707 | #if EV_MULTIPLICITY |
3150 | #if EV_MULTIPLICITY |
1708 | |
3151 | |
|
|
3152 | ecb_cold |
1709 | struct ev_loop * |
3153 | struct ev_loop * |
1710 | ev_loop_new (unsigned int flags) |
3154 | ev_loop_new (unsigned int flags) EV_NOEXCEPT |
1711 | { |
3155 | { |
1712 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
3156 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1713 | |
3157 | |
1714 | memset (loop, 0, sizeof (struct ev_loop)); |
3158 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1715 | loop_init (EV_A_ flags); |
3159 | loop_init (EV_A_ flags); |
1716 | |
3160 | |
1717 | if (ev_backend (EV_A)) |
3161 | if (ev_backend (EV_A)) |
1718 | return loop; |
3162 | return EV_A; |
1719 | |
3163 | |
|
|
3164 | ev_free (EV_A); |
1720 | return 0; |
3165 | return 0; |
1721 | } |
3166 | } |
1722 | |
3167 | |
1723 | void |
|
|
1724 | ev_loop_destroy (EV_P) |
|
|
1725 | { |
|
|
1726 | loop_destroy (EV_A); |
|
|
1727 | ev_free (loop); |
|
|
1728 | } |
|
|
1729 | |
|
|
1730 | void |
|
|
1731 | ev_loop_fork (EV_P) |
|
|
1732 | { |
|
|
1733 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1734 | } |
|
|
1735 | #endif /* multiplicity */ |
3168 | #endif /* multiplicity */ |
1736 | |
3169 | |
1737 | #if EV_VERIFY |
3170 | #if EV_VERIFY |
1738 | static void noinline |
3171 | noinline ecb_cold |
|
|
3172 | static void |
1739 | verify_watcher (EV_P_ W w) |
3173 | verify_watcher (EV_P_ W w) |
1740 | { |
3174 | { |
1741 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
3175 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1742 | |
3176 | |
1743 | if (w->pending) |
3177 | if (w->pending) |
1744 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
3178 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1745 | } |
3179 | } |
1746 | |
3180 | |
1747 | static void noinline |
3181 | noinline ecb_cold |
|
|
3182 | static void |
1748 | verify_heap (EV_P_ ANHE *heap, int N) |
3183 | verify_heap (EV_P_ ANHE *heap, int N) |
1749 | { |
3184 | { |
1750 | int i; |
3185 | int i; |
1751 | |
3186 | |
1752 | for (i = HEAP0; i < N + HEAP0; ++i) |
3187 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1757 | |
3192 | |
1758 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
3193 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1759 | } |
3194 | } |
1760 | } |
3195 | } |
1761 | |
3196 | |
1762 | static void noinline |
3197 | noinline ecb_cold |
|
|
3198 | static void |
1763 | array_verify (EV_P_ W *ws, int cnt) |
3199 | array_verify (EV_P_ W *ws, int cnt) |
1764 | { |
3200 | { |
1765 | while (cnt--) |
3201 | while (cnt--) |
1766 | { |
3202 | { |
1767 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
3203 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
1768 | verify_watcher (EV_A_ ws [cnt]); |
3204 | verify_watcher (EV_A_ ws [cnt]); |
1769 | } |
3205 | } |
1770 | } |
3206 | } |
1771 | #endif |
3207 | #endif |
1772 | |
3208 | |
1773 | #if EV_MINIMAL < 2 |
3209 | #if EV_FEATURE_API |
1774 | void |
3210 | void ecb_cold |
1775 | ev_loop_verify (EV_P) |
3211 | ev_verify (EV_P) EV_NOEXCEPT |
1776 | { |
3212 | { |
1777 | #if EV_VERIFY |
3213 | #if EV_VERIFY |
1778 | int i; |
3214 | int i; |
1779 | WL w; |
3215 | WL w, w2; |
1780 | |
3216 | |
1781 | assert (activecnt >= -1); |
3217 | assert (activecnt >= -1); |
1782 | |
3218 | |
1783 | assert (fdchangemax >= fdchangecnt); |
3219 | assert (fdchangemax >= fdchangecnt); |
1784 | for (i = 0; i < fdchangecnt; ++i) |
3220 | for (i = 0; i < fdchangecnt; ++i) |
1785 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
3221 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
1786 | |
3222 | |
1787 | assert (anfdmax >= 0); |
3223 | assert (anfdmax >= 0); |
1788 | for (i = 0; i < anfdmax; ++i) |
3224 | for (i = 0; i < anfdmax; ++i) |
|
|
3225 | { |
|
|
3226 | int j = 0; |
|
|
3227 | |
1789 | for (w = anfds [i].head; w; w = w->next) |
3228 | for (w = w2 = anfds [i].head; w; w = w->next) |
1790 | { |
3229 | { |
1791 | verify_watcher (EV_A_ (W)w); |
3230 | verify_watcher (EV_A_ (W)w); |
|
|
3231 | |
|
|
3232 | if (j++ & 1) |
|
|
3233 | { |
|
|
3234 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3235 | w2 = w2->next; |
|
|
3236 | } |
|
|
3237 | |
1792 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
3238 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
1793 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
3239 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1794 | } |
3240 | } |
|
|
3241 | } |
1795 | |
3242 | |
1796 | assert (timermax >= timercnt); |
3243 | assert (timermax >= timercnt); |
1797 | verify_heap (EV_A_ timers, timercnt); |
3244 | verify_heap (EV_A_ timers, timercnt); |
1798 | |
3245 | |
1799 | #if EV_PERIODIC_ENABLE |
3246 | #if EV_PERIODIC_ENABLE |
… | |
… | |
1814 | #if EV_FORK_ENABLE |
3261 | #if EV_FORK_ENABLE |
1815 | assert (forkmax >= forkcnt); |
3262 | assert (forkmax >= forkcnt); |
1816 | array_verify (EV_A_ (W *)forks, forkcnt); |
3263 | array_verify (EV_A_ (W *)forks, forkcnt); |
1817 | #endif |
3264 | #endif |
1818 | |
3265 | |
|
|
3266 | #if EV_CLEANUP_ENABLE |
|
|
3267 | assert (cleanupmax >= cleanupcnt); |
|
|
3268 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3269 | #endif |
|
|
3270 | |
1819 | #if EV_ASYNC_ENABLE |
3271 | #if EV_ASYNC_ENABLE |
1820 | assert (asyncmax >= asynccnt); |
3272 | assert (asyncmax >= asynccnt); |
1821 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
3273 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1822 | #endif |
3274 | #endif |
1823 | |
3275 | |
|
|
3276 | #if EV_PREPARE_ENABLE |
1824 | assert (preparemax >= preparecnt); |
3277 | assert (preparemax >= preparecnt); |
1825 | array_verify (EV_A_ (W *)prepares, preparecnt); |
3278 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
3279 | #endif |
1826 | |
3280 | |
|
|
3281 | #if EV_CHECK_ENABLE |
1827 | assert (checkmax >= checkcnt); |
3282 | assert (checkmax >= checkcnt); |
1828 | array_verify (EV_A_ (W *)checks, checkcnt); |
3283 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3284 | #endif |
1829 | |
3285 | |
1830 | # if 0 |
3286 | # if 0 |
|
|
3287 | #if EV_CHILD_ENABLE |
1831 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
3288 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
1832 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
3289 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3290 | #endif |
1833 | # endif |
3291 | # endif |
1834 | #endif |
3292 | #endif |
1835 | } |
3293 | } |
1836 | #endif |
3294 | #endif |
1837 | |
3295 | |
1838 | #if EV_MULTIPLICITY |
3296 | #if EV_MULTIPLICITY |
|
|
3297 | ecb_cold |
1839 | struct ev_loop * |
3298 | struct ev_loop * |
1840 | ev_default_loop_init (unsigned int flags) |
|
|
1841 | #else |
3299 | #else |
1842 | int |
3300 | int |
|
|
3301 | #endif |
1843 | ev_default_loop (unsigned int flags) |
3302 | ev_default_loop (unsigned int flags) EV_NOEXCEPT |
1844 | #endif |
|
|
1845 | { |
3303 | { |
1846 | if (!ev_default_loop_ptr) |
3304 | if (!ev_default_loop_ptr) |
1847 | { |
3305 | { |
1848 | #if EV_MULTIPLICITY |
3306 | #if EV_MULTIPLICITY |
1849 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
3307 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1850 | #else |
3308 | #else |
1851 | ev_default_loop_ptr = 1; |
3309 | ev_default_loop_ptr = 1; |
1852 | #endif |
3310 | #endif |
1853 | |
3311 | |
1854 | loop_init (EV_A_ flags); |
3312 | loop_init (EV_A_ flags); |
1855 | |
3313 | |
1856 | if (ev_backend (EV_A)) |
3314 | if (ev_backend (EV_A)) |
1857 | { |
3315 | { |
1858 | #ifndef _WIN32 |
3316 | #if EV_CHILD_ENABLE |
1859 | ev_signal_init (&childev, childcb, SIGCHLD); |
3317 | ev_signal_init (&childev, childcb, SIGCHLD); |
1860 | ev_set_priority (&childev, EV_MAXPRI); |
3318 | ev_set_priority (&childev, EV_MAXPRI); |
1861 | ev_signal_start (EV_A_ &childev); |
3319 | ev_signal_start (EV_A_ &childev); |
1862 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
3320 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1863 | #endif |
3321 | #endif |
… | |
… | |
1868 | |
3326 | |
1869 | return ev_default_loop_ptr; |
3327 | return ev_default_loop_ptr; |
1870 | } |
3328 | } |
1871 | |
3329 | |
1872 | void |
3330 | void |
1873 | ev_default_destroy (void) |
3331 | ev_loop_fork (EV_P) EV_NOEXCEPT |
1874 | { |
3332 | { |
1875 | #if EV_MULTIPLICITY |
3333 | postfork = 1; |
1876 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1877 | #endif |
|
|
1878 | |
|
|
1879 | ev_default_loop_ptr = 0; |
|
|
1880 | |
|
|
1881 | #ifndef _WIN32 |
|
|
1882 | ev_ref (EV_A); /* child watcher */ |
|
|
1883 | ev_signal_stop (EV_A_ &childev); |
|
|
1884 | #endif |
|
|
1885 | |
|
|
1886 | loop_destroy (EV_A); |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | void |
|
|
1890 | ev_default_fork (void) |
|
|
1891 | { |
|
|
1892 | #if EV_MULTIPLICITY |
|
|
1893 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1894 | #endif |
|
|
1895 | |
|
|
1896 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1897 | } |
3334 | } |
1898 | |
3335 | |
1899 | /*****************************************************************************/ |
3336 | /*****************************************************************************/ |
1900 | |
3337 | |
1901 | void |
3338 | void |
… | |
… | |
1903 | { |
3340 | { |
1904 | EV_CB_INVOKE ((W)w, revents); |
3341 | EV_CB_INVOKE ((W)w, revents); |
1905 | } |
3342 | } |
1906 | |
3343 | |
1907 | unsigned int |
3344 | unsigned int |
1908 | ev_pending_count (EV_P) |
3345 | ev_pending_count (EV_P) EV_NOEXCEPT |
1909 | { |
3346 | { |
1910 | int pri; |
3347 | int pri; |
1911 | unsigned int count = 0; |
3348 | unsigned int count = 0; |
1912 | |
3349 | |
1913 | for (pri = NUMPRI; pri--; ) |
3350 | for (pri = NUMPRI; pri--; ) |
1914 | count += pendingcnt [pri]; |
3351 | count += pendingcnt [pri]; |
1915 | |
3352 | |
1916 | return count; |
3353 | return count; |
1917 | } |
3354 | } |
1918 | |
3355 | |
1919 | void noinline |
3356 | noinline |
|
|
3357 | void |
1920 | ev_invoke_pending (EV_P) |
3358 | ev_invoke_pending (EV_P) |
1921 | { |
3359 | { |
1922 | int pri; |
3360 | pendingpri = NUMPRI; |
1923 | |
3361 | |
1924 | for (pri = NUMPRI; pri--; ) |
3362 | do |
|
|
3363 | { |
|
|
3364 | --pendingpri; |
|
|
3365 | |
|
|
3366 | /* pendingpri possibly gets modified in the inner loop */ |
1925 | while (pendingcnt [pri]) |
3367 | while (pendingcnt [pendingpri]) |
1926 | { |
3368 | { |
1927 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
3369 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
1928 | |
3370 | |
1929 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
1930 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1931 | |
|
|
1932 | p->w->pending = 0; |
3371 | p->w->pending = 0; |
1933 | EV_CB_INVOKE (p->w, p->events); |
3372 | EV_CB_INVOKE (p->w, p->events); |
1934 | EV_FREQUENT_CHECK; |
3373 | EV_FREQUENT_CHECK; |
1935 | } |
3374 | } |
|
|
3375 | } |
|
|
3376 | while (pendingpri); |
1936 | } |
3377 | } |
1937 | |
3378 | |
1938 | #if EV_IDLE_ENABLE |
3379 | #if EV_IDLE_ENABLE |
1939 | /* make idle watchers pending. this handles the "call-idle */ |
3380 | /* make idle watchers pending. this handles the "call-idle */ |
1940 | /* only when higher priorities are idle" logic */ |
3381 | /* only when higher priorities are idle" logic */ |
… | |
… | |
1992 | EV_FREQUENT_CHECK; |
3433 | EV_FREQUENT_CHECK; |
1993 | feed_reverse (EV_A_ (W)w); |
3434 | feed_reverse (EV_A_ (W)w); |
1994 | } |
3435 | } |
1995 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
3436 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
1996 | |
3437 | |
1997 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
3438 | feed_reverse_done (EV_A_ EV_TIMER); |
1998 | } |
3439 | } |
1999 | } |
3440 | } |
2000 | |
3441 | |
2001 | #if EV_PERIODIC_ENABLE |
3442 | #if EV_PERIODIC_ENABLE |
|
|
3443 | |
|
|
3444 | noinline |
|
|
3445 | static void |
|
|
3446 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3447 | { |
|
|
3448 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3449 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3450 | |
|
|
3451 | /* the above almost always errs on the low side */ |
|
|
3452 | while (at <= ev_rt_now) |
|
|
3453 | { |
|
|
3454 | ev_tstamp nat = at + w->interval; |
|
|
3455 | |
|
|
3456 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3457 | if (expect_false (nat == at)) |
|
|
3458 | { |
|
|
3459 | at = ev_rt_now; |
|
|
3460 | break; |
|
|
3461 | } |
|
|
3462 | |
|
|
3463 | at = nat; |
|
|
3464 | } |
|
|
3465 | |
|
|
3466 | ev_at (w) = at; |
|
|
3467 | } |
|
|
3468 | |
2002 | /* make periodics pending */ |
3469 | /* make periodics pending */ |
2003 | inline_size void |
3470 | inline_size void |
2004 | periodics_reify (EV_P) |
3471 | periodics_reify (EV_P) |
2005 | { |
3472 | { |
2006 | EV_FREQUENT_CHECK; |
3473 | EV_FREQUENT_CHECK; |
2007 | |
3474 | |
2008 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
3475 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
2009 | { |
3476 | { |
2010 | int feed_count = 0; |
|
|
2011 | |
|
|
2012 | do |
3477 | do |
2013 | { |
3478 | { |
2014 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
3479 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
2015 | |
3480 | |
2016 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
3481 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
… | |
… | |
2025 | ANHE_at_cache (periodics [HEAP0]); |
3490 | ANHE_at_cache (periodics [HEAP0]); |
2026 | downheap (periodics, periodiccnt, HEAP0); |
3491 | downheap (periodics, periodiccnt, HEAP0); |
2027 | } |
3492 | } |
2028 | else if (w->interval) |
3493 | else if (w->interval) |
2029 | { |
3494 | { |
2030 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
3495 | periodic_recalc (EV_A_ w); |
2031 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2032 | /* this might happen because of floating point inexactness */ |
|
|
2033 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2034 | { |
|
|
2035 | ev_at (w) += w->interval; |
|
|
2036 | |
|
|
2037 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2038 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2039 | /* has effectively asked to get triggered more often than possible */ |
|
|
2040 | if (ev_at (w) < ev_rt_now) |
|
|
2041 | ev_at (w) = ev_rt_now; |
|
|
2042 | } |
|
|
2043 | |
|
|
2044 | ANHE_at_cache (periodics [HEAP0]); |
3496 | ANHE_at_cache (periodics [HEAP0]); |
2045 | downheap (periodics, periodiccnt, HEAP0); |
3497 | downheap (periodics, periodiccnt, HEAP0); |
2046 | } |
3498 | } |
2047 | else |
3499 | else |
2048 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
3500 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2055 | feed_reverse_done (EV_A_ EV_PERIODIC); |
3507 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2056 | } |
3508 | } |
2057 | } |
3509 | } |
2058 | |
3510 | |
2059 | /* simply recalculate all periodics */ |
3511 | /* simply recalculate all periodics */ |
2060 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
3512 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2061 | static void noinline |
3513 | noinline ecb_cold |
|
|
3514 | static void |
2062 | periodics_reschedule (EV_P) |
3515 | periodics_reschedule (EV_P) |
2063 | { |
3516 | { |
2064 | int i; |
3517 | int i; |
2065 | |
3518 | |
2066 | /* adjust periodics after time jump */ |
3519 | /* adjust periodics after time jump */ |
… | |
… | |
2069 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
3522 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2070 | |
3523 | |
2071 | if (w->reschedule_cb) |
3524 | if (w->reschedule_cb) |
2072 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3525 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2073 | else if (w->interval) |
3526 | else if (w->interval) |
2074 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
3527 | periodic_recalc (EV_A_ w); |
2075 | |
3528 | |
2076 | ANHE_at_cache (periodics [i]); |
3529 | ANHE_at_cache (periodics [i]); |
2077 | } |
3530 | } |
2078 | |
3531 | |
2079 | reheap (periodics, periodiccnt); |
3532 | reheap (periodics, periodiccnt); |
2080 | } |
3533 | } |
2081 | #endif |
3534 | #endif |
2082 | |
3535 | |
2083 | /* adjust all timers by a given offset */ |
3536 | /* adjust all timers by a given offset */ |
2084 | static void noinline |
3537 | noinline ecb_cold |
|
|
3538 | static void |
2085 | timers_reschedule (EV_P_ ev_tstamp adjust) |
3539 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2086 | { |
3540 | { |
2087 | int i; |
3541 | int i; |
2088 | |
3542 | |
2089 | for (i = 0; i < timercnt; ++i) |
3543 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2093 | ANHE_at_cache (*he); |
3547 | ANHE_at_cache (*he); |
2094 | } |
3548 | } |
2095 | } |
3549 | } |
2096 | |
3550 | |
2097 | /* fetch new monotonic and realtime times from the kernel */ |
3551 | /* fetch new monotonic and realtime times from the kernel */ |
2098 | /* also detetc if there was a timejump, and act accordingly */ |
3552 | /* also detect if there was a timejump, and act accordingly */ |
2099 | inline_speed void |
3553 | inline_speed void |
2100 | time_update (EV_P_ ev_tstamp max_block) |
3554 | time_update (EV_P_ ev_tstamp max_block) |
2101 | { |
3555 | { |
2102 | #if EV_USE_MONOTONIC |
3556 | #if EV_USE_MONOTONIC |
2103 | if (expect_true (have_monotonic)) |
3557 | if (expect_true (have_monotonic)) |
… | |
… | |
2126 | * doesn't hurt either as we only do this on time-jumps or |
3580 | * doesn't hurt either as we only do this on time-jumps or |
2127 | * in the unlikely event of having been preempted here. |
3581 | * in the unlikely event of having been preempted here. |
2128 | */ |
3582 | */ |
2129 | for (i = 4; --i; ) |
3583 | for (i = 4; --i; ) |
2130 | { |
3584 | { |
|
|
3585 | ev_tstamp diff; |
2131 | rtmn_diff = ev_rt_now - mn_now; |
3586 | rtmn_diff = ev_rt_now - mn_now; |
2132 | |
3587 | |
|
|
3588 | diff = odiff - rtmn_diff; |
|
|
3589 | |
2133 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
3590 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2134 | return; /* all is well */ |
3591 | return; /* all is well */ |
2135 | |
3592 | |
2136 | ev_rt_now = ev_time (); |
3593 | ev_rt_now = ev_time (); |
2137 | mn_now = get_clock (); |
3594 | mn_now = get_clock (); |
2138 | now_floor = mn_now; |
3595 | now_floor = mn_now; |
… | |
… | |
2160 | |
3617 | |
2161 | mn_now = ev_rt_now; |
3618 | mn_now = ev_rt_now; |
2162 | } |
3619 | } |
2163 | } |
3620 | } |
2164 | |
3621 | |
2165 | void |
3622 | int |
2166 | ev_loop (EV_P_ int flags) |
3623 | ev_run (EV_P_ int flags) |
2167 | { |
3624 | { |
2168 | #if EV_MINIMAL < 2 |
3625 | #if EV_FEATURE_API |
2169 | ++loop_depth; |
3626 | ++loop_depth; |
2170 | #endif |
3627 | #endif |
2171 | |
3628 | |
2172 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
3629 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2173 | |
3630 | |
2174 | loop_done = EVUNLOOP_CANCEL; |
3631 | loop_done = EVBREAK_CANCEL; |
2175 | |
3632 | |
2176 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
3633 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2177 | |
3634 | |
2178 | do |
3635 | do |
2179 | { |
3636 | { |
2180 | #if EV_VERIFY >= 2 |
3637 | #if EV_VERIFY >= 2 |
2181 | ev_loop_verify (EV_A); |
3638 | ev_verify (EV_A); |
2182 | #endif |
3639 | #endif |
2183 | |
3640 | |
2184 | #ifndef _WIN32 |
3641 | #ifndef _WIN32 |
2185 | if (expect_false (curpid)) /* penalise the forking check even more */ |
3642 | if (expect_false (curpid)) /* penalise the forking check even more */ |
2186 | if (expect_false (getpid () != curpid)) |
3643 | if (expect_false (getpid () != curpid)) |
… | |
… | |
2198 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
3655 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
2199 | EV_INVOKE_PENDING; |
3656 | EV_INVOKE_PENDING; |
2200 | } |
3657 | } |
2201 | #endif |
3658 | #endif |
2202 | |
3659 | |
|
|
3660 | #if EV_PREPARE_ENABLE |
2203 | /* queue prepare watchers (and execute them) */ |
3661 | /* queue prepare watchers (and execute them) */ |
2204 | if (expect_false (preparecnt)) |
3662 | if (expect_false (preparecnt)) |
2205 | { |
3663 | { |
2206 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
3664 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2207 | EV_INVOKE_PENDING; |
3665 | EV_INVOKE_PENDING; |
2208 | } |
3666 | } |
|
|
3667 | #endif |
2209 | |
3668 | |
2210 | if (expect_false (loop_done)) |
3669 | if (expect_false (loop_done)) |
2211 | break; |
3670 | break; |
2212 | |
3671 | |
2213 | /* we might have forked, so reify kernel state if necessary */ |
3672 | /* we might have forked, so reify kernel state if necessary */ |
… | |
… | |
2220 | /* calculate blocking time */ |
3679 | /* calculate blocking time */ |
2221 | { |
3680 | { |
2222 | ev_tstamp waittime = 0.; |
3681 | ev_tstamp waittime = 0.; |
2223 | ev_tstamp sleeptime = 0.; |
3682 | ev_tstamp sleeptime = 0.; |
2224 | |
3683 | |
|
|
3684 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3685 | ev_tstamp prev_mn_now = mn_now; |
|
|
3686 | |
|
|
3687 | /* update time to cancel out callback processing overhead */ |
|
|
3688 | time_update (EV_A_ 1e100); |
|
|
3689 | |
|
|
3690 | /* from now on, we want a pipe-wake-up */ |
|
|
3691 | pipe_write_wanted = 1; |
|
|
3692 | |
|
|
3693 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3694 | |
2225 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
3695 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2226 | { |
3696 | { |
2227 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2228 | ev_tstamp prev_mn_now = mn_now; |
|
|
2229 | |
|
|
2230 | /* update time to cancel out callback processing overhead */ |
|
|
2231 | time_update (EV_A_ 1e100); |
|
|
2232 | |
|
|
2233 | waittime = MAX_BLOCKTIME; |
3697 | waittime = MAX_BLOCKTIME; |
2234 | |
3698 | |
2235 | if (timercnt) |
3699 | if (timercnt) |
2236 | { |
3700 | { |
2237 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
3701 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2238 | if (waittime > to) waittime = to; |
3702 | if (waittime > to) waittime = to; |
2239 | } |
3703 | } |
2240 | |
3704 | |
2241 | #if EV_PERIODIC_ENABLE |
3705 | #if EV_PERIODIC_ENABLE |
2242 | if (periodiccnt) |
3706 | if (periodiccnt) |
2243 | { |
3707 | { |
2244 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
3708 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2245 | if (waittime > to) waittime = to; |
3709 | if (waittime > to) waittime = to; |
2246 | } |
3710 | } |
2247 | #endif |
3711 | #endif |
2248 | |
3712 | |
2249 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3713 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2250 | if (expect_false (waittime < timeout_blocktime)) |
3714 | if (expect_false (waittime < timeout_blocktime)) |
2251 | waittime = timeout_blocktime; |
3715 | waittime = timeout_blocktime; |
|
|
3716 | |
|
|
3717 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3718 | /* to pass a minimum nonzero value to the backend */ |
|
|
3719 | if (expect_false (waittime < backend_mintime)) |
|
|
3720 | waittime = backend_mintime; |
2252 | |
3721 | |
2253 | /* extra check because io_blocktime is commonly 0 */ |
3722 | /* extra check because io_blocktime is commonly 0 */ |
2254 | if (expect_false (io_blocktime)) |
3723 | if (expect_false (io_blocktime)) |
2255 | { |
3724 | { |
2256 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3725 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2257 | |
3726 | |
2258 | if (sleeptime > waittime - backend_fudge) |
3727 | if (sleeptime > waittime - backend_mintime) |
2259 | sleeptime = waittime - backend_fudge; |
3728 | sleeptime = waittime - backend_mintime; |
2260 | |
3729 | |
2261 | if (expect_true (sleeptime > 0.)) |
3730 | if (expect_true (sleeptime > 0.)) |
2262 | { |
3731 | { |
2263 | ev_sleep (sleeptime); |
3732 | ev_sleep (sleeptime); |
2264 | waittime -= sleeptime; |
3733 | waittime -= sleeptime; |
2265 | } |
3734 | } |
2266 | } |
3735 | } |
2267 | } |
3736 | } |
2268 | |
3737 | |
2269 | #if EV_MINIMAL < 2 |
3738 | #if EV_FEATURE_API |
2270 | ++loop_count; |
3739 | ++loop_count; |
2271 | #endif |
3740 | #endif |
2272 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
3741 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2273 | backend_poll (EV_A_ waittime); |
3742 | backend_poll (EV_A_ waittime); |
2274 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
3743 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3744 | |
|
|
3745 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3746 | |
|
|
3747 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3748 | if (pipe_write_skipped) |
|
|
3749 | { |
|
|
3750 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3751 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3752 | } |
|
|
3753 | |
2275 | |
3754 | |
2276 | /* update ev_rt_now, do magic */ |
3755 | /* update ev_rt_now, do magic */ |
2277 | time_update (EV_A_ waittime + sleeptime); |
3756 | time_update (EV_A_ waittime + sleeptime); |
2278 | } |
3757 | } |
2279 | |
3758 | |
… | |
… | |
2286 | #if EV_IDLE_ENABLE |
3765 | #if EV_IDLE_ENABLE |
2287 | /* queue idle watchers unless other events are pending */ |
3766 | /* queue idle watchers unless other events are pending */ |
2288 | idle_reify (EV_A); |
3767 | idle_reify (EV_A); |
2289 | #endif |
3768 | #endif |
2290 | |
3769 | |
|
|
3770 | #if EV_CHECK_ENABLE |
2291 | /* queue check watchers, to be executed first */ |
3771 | /* queue check watchers, to be executed first */ |
2292 | if (expect_false (checkcnt)) |
3772 | if (expect_false (checkcnt)) |
2293 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3773 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3774 | #endif |
2294 | |
3775 | |
2295 | EV_INVOKE_PENDING; |
3776 | EV_INVOKE_PENDING; |
2296 | } |
3777 | } |
2297 | while (expect_true ( |
3778 | while (expect_true ( |
2298 | activecnt |
3779 | activecnt |
2299 | && !loop_done |
3780 | && !loop_done |
2300 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
3781 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2301 | )); |
3782 | )); |
2302 | |
3783 | |
2303 | if (loop_done == EVUNLOOP_ONE) |
3784 | if (loop_done == EVBREAK_ONE) |
2304 | loop_done = EVUNLOOP_CANCEL; |
3785 | loop_done = EVBREAK_CANCEL; |
2305 | |
3786 | |
2306 | #if EV_MINIMAL < 2 |
3787 | #if EV_FEATURE_API |
2307 | --loop_depth; |
3788 | --loop_depth; |
2308 | #endif |
3789 | #endif |
2309 | } |
|
|
2310 | |
3790 | |
|
|
3791 | return activecnt; |
|
|
3792 | } |
|
|
3793 | |
2311 | void |
3794 | void |
2312 | ev_unloop (EV_P_ int how) |
3795 | ev_break (EV_P_ int how) EV_NOEXCEPT |
2313 | { |
3796 | { |
2314 | loop_done = how; |
3797 | loop_done = how; |
2315 | } |
3798 | } |
2316 | |
3799 | |
2317 | void |
3800 | void |
2318 | ev_ref (EV_P) |
3801 | ev_ref (EV_P) EV_NOEXCEPT |
2319 | { |
3802 | { |
2320 | ++activecnt; |
3803 | ++activecnt; |
2321 | } |
3804 | } |
2322 | |
3805 | |
2323 | void |
3806 | void |
2324 | ev_unref (EV_P) |
3807 | ev_unref (EV_P) EV_NOEXCEPT |
2325 | { |
3808 | { |
2326 | --activecnt; |
3809 | --activecnt; |
2327 | } |
3810 | } |
2328 | |
3811 | |
2329 | void |
3812 | void |
2330 | ev_now_update (EV_P) |
3813 | ev_now_update (EV_P) EV_NOEXCEPT |
2331 | { |
3814 | { |
2332 | time_update (EV_A_ 1e100); |
3815 | time_update (EV_A_ 1e100); |
2333 | } |
3816 | } |
2334 | |
3817 | |
2335 | void |
3818 | void |
2336 | ev_suspend (EV_P) |
3819 | ev_suspend (EV_P) EV_NOEXCEPT |
2337 | { |
3820 | { |
2338 | ev_now_update (EV_A); |
3821 | ev_now_update (EV_A); |
2339 | } |
3822 | } |
2340 | |
3823 | |
2341 | void |
3824 | void |
2342 | ev_resume (EV_P) |
3825 | ev_resume (EV_P) EV_NOEXCEPT |
2343 | { |
3826 | { |
2344 | ev_tstamp mn_prev = mn_now; |
3827 | ev_tstamp mn_prev = mn_now; |
2345 | |
3828 | |
2346 | ev_now_update (EV_A); |
3829 | ev_now_update (EV_A); |
2347 | timers_reschedule (EV_A_ mn_now - mn_prev); |
3830 | timers_reschedule (EV_A_ mn_now - mn_prev); |
… | |
… | |
2364 | inline_size void |
3847 | inline_size void |
2365 | wlist_del (WL *head, WL elem) |
3848 | wlist_del (WL *head, WL elem) |
2366 | { |
3849 | { |
2367 | while (*head) |
3850 | while (*head) |
2368 | { |
3851 | { |
2369 | if (*head == elem) |
3852 | if (expect_true (*head == elem)) |
2370 | { |
3853 | { |
2371 | *head = elem->next; |
3854 | *head = elem->next; |
2372 | return; |
3855 | break; |
2373 | } |
3856 | } |
2374 | |
3857 | |
2375 | head = &(*head)->next; |
3858 | head = &(*head)->next; |
2376 | } |
3859 | } |
2377 | } |
3860 | } |
… | |
… | |
2386 | w->pending = 0; |
3869 | w->pending = 0; |
2387 | } |
3870 | } |
2388 | } |
3871 | } |
2389 | |
3872 | |
2390 | int |
3873 | int |
2391 | ev_clear_pending (EV_P_ void *w) |
3874 | ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT |
2392 | { |
3875 | { |
2393 | W w_ = (W)w; |
3876 | W w_ = (W)w; |
2394 | int pending = w_->pending; |
3877 | int pending = w_->pending; |
2395 | |
3878 | |
2396 | if (expect_true (pending)) |
3879 | if (expect_true (pending)) |
… | |
… | |
2428 | w->active = 0; |
3911 | w->active = 0; |
2429 | } |
3912 | } |
2430 | |
3913 | |
2431 | /*****************************************************************************/ |
3914 | /*****************************************************************************/ |
2432 | |
3915 | |
2433 | void noinline |
3916 | noinline |
|
|
3917 | void |
2434 | ev_io_start (EV_P_ ev_io *w) |
3918 | ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT |
2435 | { |
3919 | { |
2436 | int fd = w->fd; |
3920 | int fd = w->fd; |
2437 | |
3921 | |
2438 | if (expect_false (ev_is_active (w))) |
3922 | if (expect_false (ev_is_active (w))) |
2439 | return; |
3923 | return; |
2440 | |
3924 | |
2441 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
3925 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2442 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
3926 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2443 | |
3927 | |
2444 | EV_FREQUENT_CHECK; |
3928 | EV_FREQUENT_CHECK; |
2445 | |
3929 | |
2446 | ev_start (EV_A_ (W)w, 1); |
3930 | ev_start (EV_A_ (W)w, 1); |
2447 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
3931 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); |
2448 | wlist_add (&anfds[fd].head, (WL)w); |
3932 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
3933 | |
|
|
3934 | /* common bug, apparently */ |
|
|
3935 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
2449 | |
3936 | |
2450 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
3937 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
2451 | w->events &= ~EV__IOFDSET; |
3938 | w->events &= ~EV__IOFDSET; |
2452 | |
3939 | |
2453 | EV_FREQUENT_CHECK; |
3940 | EV_FREQUENT_CHECK; |
2454 | } |
3941 | } |
2455 | |
3942 | |
2456 | void noinline |
3943 | noinline |
|
|
3944 | void |
2457 | ev_io_stop (EV_P_ ev_io *w) |
3945 | ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT |
2458 | { |
3946 | { |
2459 | clear_pending (EV_A_ (W)w); |
3947 | clear_pending (EV_A_ (W)w); |
2460 | if (expect_false (!ev_is_active (w))) |
3948 | if (expect_false (!ev_is_active (w))) |
2461 | return; |
3949 | return; |
2462 | |
3950 | |
… | |
… | |
2465 | EV_FREQUENT_CHECK; |
3953 | EV_FREQUENT_CHECK; |
2466 | |
3954 | |
2467 | wlist_del (&anfds[w->fd].head, (WL)w); |
3955 | wlist_del (&anfds[w->fd].head, (WL)w); |
2468 | ev_stop (EV_A_ (W)w); |
3956 | ev_stop (EV_A_ (W)w); |
2469 | |
3957 | |
2470 | fd_change (EV_A_ w->fd, 1); |
3958 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2471 | |
3959 | |
2472 | EV_FREQUENT_CHECK; |
3960 | EV_FREQUENT_CHECK; |
2473 | } |
3961 | } |
2474 | |
3962 | |
2475 | void noinline |
3963 | noinline |
|
|
3964 | void |
2476 | ev_timer_start (EV_P_ ev_timer *w) |
3965 | ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT |
2477 | { |
3966 | { |
2478 | if (expect_false (ev_is_active (w))) |
3967 | if (expect_false (ev_is_active (w))) |
2479 | return; |
3968 | return; |
2480 | |
3969 | |
2481 | ev_at (w) += mn_now; |
3970 | ev_at (w) += mn_now; |
… | |
… | |
2484 | |
3973 | |
2485 | EV_FREQUENT_CHECK; |
3974 | EV_FREQUENT_CHECK; |
2486 | |
3975 | |
2487 | ++timercnt; |
3976 | ++timercnt; |
2488 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
3977 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
2489 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
3978 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit); |
2490 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
3979 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
2491 | ANHE_at_cache (timers [ev_active (w)]); |
3980 | ANHE_at_cache (timers [ev_active (w)]); |
2492 | upheap (timers, ev_active (w)); |
3981 | upheap (timers, ev_active (w)); |
2493 | |
3982 | |
2494 | EV_FREQUENT_CHECK; |
3983 | EV_FREQUENT_CHECK; |
2495 | |
3984 | |
2496 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
3985 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2497 | } |
3986 | } |
2498 | |
3987 | |
2499 | void noinline |
3988 | noinline |
|
|
3989 | void |
2500 | ev_timer_stop (EV_P_ ev_timer *w) |
3990 | ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT |
2501 | { |
3991 | { |
2502 | clear_pending (EV_A_ (W)w); |
3992 | clear_pending (EV_A_ (W)w); |
2503 | if (expect_false (!ev_is_active (w))) |
3993 | if (expect_false (!ev_is_active (w))) |
2504 | return; |
3994 | return; |
2505 | |
3995 | |
… | |
… | |
2517 | timers [active] = timers [timercnt + HEAP0]; |
4007 | timers [active] = timers [timercnt + HEAP0]; |
2518 | adjustheap (timers, timercnt, active); |
4008 | adjustheap (timers, timercnt, active); |
2519 | } |
4009 | } |
2520 | } |
4010 | } |
2521 | |
4011 | |
2522 | EV_FREQUENT_CHECK; |
|
|
2523 | |
|
|
2524 | ev_at (w) -= mn_now; |
4012 | ev_at (w) -= mn_now; |
2525 | |
4013 | |
2526 | ev_stop (EV_A_ (W)w); |
4014 | ev_stop (EV_A_ (W)w); |
2527 | } |
|
|
2528 | |
4015 | |
|
|
4016 | EV_FREQUENT_CHECK; |
|
|
4017 | } |
|
|
4018 | |
2529 | void noinline |
4019 | noinline |
|
|
4020 | void |
2530 | ev_timer_again (EV_P_ ev_timer *w) |
4021 | ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT |
2531 | { |
4022 | { |
2532 | EV_FREQUENT_CHECK; |
4023 | EV_FREQUENT_CHECK; |
|
|
4024 | |
|
|
4025 | clear_pending (EV_A_ (W)w); |
2533 | |
4026 | |
2534 | if (ev_is_active (w)) |
4027 | if (ev_is_active (w)) |
2535 | { |
4028 | { |
2536 | if (w->repeat) |
4029 | if (w->repeat) |
2537 | { |
4030 | { |
… | |
… | |
2550 | |
4043 | |
2551 | EV_FREQUENT_CHECK; |
4044 | EV_FREQUENT_CHECK; |
2552 | } |
4045 | } |
2553 | |
4046 | |
2554 | ev_tstamp |
4047 | ev_tstamp |
2555 | ev_timer_remaining (EV_P_ ev_timer *w) |
4048 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
2556 | { |
4049 | { |
2557 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
4050 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
2558 | } |
4051 | } |
2559 | |
4052 | |
2560 | #if EV_PERIODIC_ENABLE |
4053 | #if EV_PERIODIC_ENABLE |
2561 | void noinline |
4054 | noinline |
|
|
4055 | void |
2562 | ev_periodic_start (EV_P_ ev_periodic *w) |
4056 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2563 | { |
4057 | { |
2564 | if (expect_false (ev_is_active (w))) |
4058 | if (expect_false (ev_is_active (w))) |
2565 | return; |
4059 | return; |
2566 | |
4060 | |
2567 | if (w->reschedule_cb) |
4061 | if (w->reschedule_cb) |
2568 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
4062 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2569 | else if (w->interval) |
4063 | else if (w->interval) |
2570 | { |
4064 | { |
2571 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
4065 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2572 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
4066 | periodic_recalc (EV_A_ w); |
2573 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2574 | } |
4067 | } |
2575 | else |
4068 | else |
2576 | ev_at (w) = w->offset; |
4069 | ev_at (w) = w->offset; |
2577 | |
4070 | |
2578 | EV_FREQUENT_CHECK; |
4071 | EV_FREQUENT_CHECK; |
2579 | |
4072 | |
2580 | ++periodiccnt; |
4073 | ++periodiccnt; |
2581 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
4074 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
2582 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
4075 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit); |
2583 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
4076 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
2584 | ANHE_at_cache (periodics [ev_active (w)]); |
4077 | ANHE_at_cache (periodics [ev_active (w)]); |
2585 | upheap (periodics, ev_active (w)); |
4078 | upheap (periodics, ev_active (w)); |
2586 | |
4079 | |
2587 | EV_FREQUENT_CHECK; |
4080 | EV_FREQUENT_CHECK; |
2588 | |
4081 | |
2589 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
4082 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2590 | } |
4083 | } |
2591 | |
4084 | |
2592 | void noinline |
4085 | noinline |
|
|
4086 | void |
2593 | ev_periodic_stop (EV_P_ ev_periodic *w) |
4087 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2594 | { |
4088 | { |
2595 | clear_pending (EV_A_ (W)w); |
4089 | clear_pending (EV_A_ (W)w); |
2596 | if (expect_false (!ev_is_active (w))) |
4090 | if (expect_false (!ev_is_active (w))) |
2597 | return; |
4091 | return; |
2598 | |
4092 | |
… | |
… | |
2610 | periodics [active] = periodics [periodiccnt + HEAP0]; |
4104 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2611 | adjustheap (periodics, periodiccnt, active); |
4105 | adjustheap (periodics, periodiccnt, active); |
2612 | } |
4106 | } |
2613 | } |
4107 | } |
2614 | |
4108 | |
2615 | EV_FREQUENT_CHECK; |
|
|
2616 | |
|
|
2617 | ev_stop (EV_A_ (W)w); |
4109 | ev_stop (EV_A_ (W)w); |
2618 | } |
|
|
2619 | |
4110 | |
|
|
4111 | EV_FREQUENT_CHECK; |
|
|
4112 | } |
|
|
4113 | |
2620 | void noinline |
4114 | noinline |
|
|
4115 | void |
2621 | ev_periodic_again (EV_P_ ev_periodic *w) |
4116 | ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT |
2622 | { |
4117 | { |
2623 | /* TODO: use adjustheap and recalculation */ |
4118 | /* TODO: use adjustheap and recalculation */ |
2624 | ev_periodic_stop (EV_A_ w); |
4119 | ev_periodic_stop (EV_A_ w); |
2625 | ev_periodic_start (EV_A_ w); |
4120 | ev_periodic_start (EV_A_ w); |
2626 | } |
4121 | } |
… | |
… | |
2628 | |
4123 | |
2629 | #ifndef SA_RESTART |
4124 | #ifndef SA_RESTART |
2630 | # define SA_RESTART 0 |
4125 | # define SA_RESTART 0 |
2631 | #endif |
4126 | #endif |
2632 | |
4127 | |
|
|
4128 | #if EV_SIGNAL_ENABLE |
|
|
4129 | |
2633 | void noinline |
4130 | noinline |
|
|
4131 | void |
2634 | ev_signal_start (EV_P_ ev_signal *w) |
4132 | ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT |
2635 | { |
4133 | { |
2636 | #if EV_MULTIPLICITY |
|
|
2637 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2638 | #endif |
|
|
2639 | if (expect_false (ev_is_active (w))) |
4134 | if (expect_false (ev_is_active (w))) |
2640 | return; |
4135 | return; |
2641 | |
4136 | |
2642 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
4137 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
4138 | |
|
|
4139 | #if EV_MULTIPLICITY |
|
|
4140 | assert (("libev: a signal must not be attached to two different loops", |
|
|
4141 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
4142 | |
|
|
4143 | signals [w->signum - 1].loop = EV_A; |
|
|
4144 | ECB_MEMORY_FENCE_RELEASE; |
|
|
4145 | #endif |
2643 | |
4146 | |
2644 | EV_FREQUENT_CHECK; |
4147 | EV_FREQUENT_CHECK; |
2645 | |
4148 | |
2646 | #if EV_USE_SIGNALFD |
4149 | #if EV_USE_SIGNALFD |
2647 | if (sigfd == -2) |
4150 | if (sigfd == -2) |
… | |
… | |
2669 | sigaddset (&sigfd_set, w->signum); |
4172 | sigaddset (&sigfd_set, w->signum); |
2670 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
4173 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
2671 | |
4174 | |
2672 | signalfd (sigfd, &sigfd_set, 0); |
4175 | signalfd (sigfd, &sigfd_set, 0); |
2673 | } |
4176 | } |
2674 | else |
|
|
2675 | #endif |
|
|
2676 | evpipe_init (EV_A); |
|
|
2677 | |
|
|
2678 | { |
|
|
2679 | #ifndef _WIN32 |
|
|
2680 | sigset_t full, prev; |
|
|
2681 | sigfillset (&full); |
|
|
2682 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2683 | #endif |
|
|
2684 | |
|
|
2685 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2686 | |
|
|
2687 | #ifndef _WIN32 |
|
|
2688 | # if EV_USE_SIGNALFD |
|
|
2689 | if (sigfd < 0)/*TODO*/ |
|
|
2690 | # endif |
4177 | #endif |
2691 | sigdelset (&prev, w->signum); |
|
|
2692 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2693 | #endif |
|
|
2694 | } |
|
|
2695 | |
4178 | |
2696 | ev_start (EV_A_ (W)w, 1); |
4179 | ev_start (EV_A_ (W)w, 1); |
2697 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
4180 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2698 | |
4181 | |
2699 | if (!((WL)w)->next) |
4182 | if (!((WL)w)->next) |
2700 | { |
|
|
2701 | #if _WIN32 |
|
|
2702 | signal (w->signum, ev_sighandler); |
|
|
2703 | #else |
|
|
2704 | # if EV_USE_SIGNALFD |
4183 | # if EV_USE_SIGNALFD |
2705 | if (sigfd < 0) /*TODO*/ |
4184 | if (sigfd < 0) /*TODO*/ |
2706 | # endif |
4185 | # endif |
2707 | { |
4186 | { |
|
|
4187 | # ifdef _WIN32 |
|
|
4188 | evpipe_init (EV_A); |
|
|
4189 | |
|
|
4190 | signal (w->signum, ev_sighandler); |
|
|
4191 | # else |
2708 | struct sigaction sa = { }; |
4192 | struct sigaction sa; |
|
|
4193 | |
|
|
4194 | evpipe_init (EV_A); |
|
|
4195 | |
2709 | sa.sa_handler = ev_sighandler; |
4196 | sa.sa_handler = ev_sighandler; |
2710 | sigfillset (&sa.sa_mask); |
4197 | sigfillset (&sa.sa_mask); |
2711 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
4198 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2712 | sigaction (w->signum, &sa, 0); |
4199 | sigaction (w->signum, &sa, 0); |
|
|
4200 | |
|
|
4201 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4202 | { |
|
|
4203 | sigemptyset (&sa.sa_mask); |
|
|
4204 | sigaddset (&sa.sa_mask, w->signum); |
|
|
4205 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2713 | } |
4206 | } |
2714 | #endif |
4207 | #endif |
2715 | } |
4208 | } |
2716 | |
4209 | |
2717 | EV_FREQUENT_CHECK; |
4210 | EV_FREQUENT_CHECK; |
2718 | } |
4211 | } |
2719 | |
4212 | |
2720 | void noinline |
4213 | noinline |
|
|
4214 | void |
2721 | ev_signal_stop (EV_P_ ev_signal *w) |
4215 | ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT |
2722 | { |
4216 | { |
2723 | clear_pending (EV_A_ (W)w); |
4217 | clear_pending (EV_A_ (W)w); |
2724 | if (expect_false (!ev_is_active (w))) |
4218 | if (expect_false (!ev_is_active (w))) |
2725 | return; |
4219 | return; |
2726 | |
4220 | |
… | |
… | |
2728 | |
4222 | |
2729 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
4223 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2730 | ev_stop (EV_A_ (W)w); |
4224 | ev_stop (EV_A_ (W)w); |
2731 | |
4225 | |
2732 | if (!signals [w->signum - 1].head) |
4226 | if (!signals [w->signum - 1].head) |
|
|
4227 | { |
|
|
4228 | #if EV_MULTIPLICITY |
|
|
4229 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
4230 | #endif |
2733 | #if EV_USE_SIGNALFD |
4231 | #if EV_USE_SIGNALFD |
2734 | if (sigfd >= 0) |
4232 | if (sigfd >= 0) |
2735 | { |
4233 | { |
2736 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
4234 | sigset_t ss; |
|
|
4235 | |
|
|
4236 | sigemptyset (&ss); |
|
|
4237 | sigaddset (&ss, w->signum); |
2737 | sigdelset (&sigfd_set, w->signum); |
4238 | sigdelset (&sigfd_set, w->signum); |
|
|
4239 | |
2738 | signalfd (sigfd, &sigfd_set, 0); |
4240 | signalfd (sigfd, &sigfd_set, 0); |
2739 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
4241 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
2740 | /*TODO: maybe unblock signal? */ |
|
|
2741 | } |
4242 | } |
2742 | else |
4243 | else |
2743 | #endif |
4244 | #endif |
2744 | signal (w->signum, SIG_DFL); |
4245 | signal (w->signum, SIG_DFL); |
|
|
4246 | } |
2745 | |
4247 | |
2746 | EV_FREQUENT_CHECK; |
4248 | EV_FREQUENT_CHECK; |
2747 | } |
4249 | } |
2748 | |
4250 | |
|
|
4251 | #endif |
|
|
4252 | |
|
|
4253 | #if EV_CHILD_ENABLE |
|
|
4254 | |
2749 | void |
4255 | void |
2750 | ev_child_start (EV_P_ ev_child *w) |
4256 | ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT |
2751 | { |
4257 | { |
2752 | #if EV_MULTIPLICITY |
4258 | #if EV_MULTIPLICITY |
2753 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
4259 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2754 | #endif |
4260 | #endif |
2755 | if (expect_false (ev_is_active (w))) |
4261 | if (expect_false (ev_is_active (w))) |
2756 | return; |
4262 | return; |
2757 | |
4263 | |
2758 | EV_FREQUENT_CHECK; |
4264 | EV_FREQUENT_CHECK; |
2759 | |
4265 | |
2760 | ev_start (EV_A_ (W)w, 1); |
4266 | ev_start (EV_A_ (W)w, 1); |
2761 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
4267 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
2762 | |
4268 | |
2763 | EV_FREQUENT_CHECK; |
4269 | EV_FREQUENT_CHECK; |
2764 | } |
4270 | } |
2765 | |
4271 | |
2766 | void |
4272 | void |
2767 | ev_child_stop (EV_P_ ev_child *w) |
4273 | ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT |
2768 | { |
4274 | { |
2769 | clear_pending (EV_A_ (W)w); |
4275 | clear_pending (EV_A_ (W)w); |
2770 | if (expect_false (!ev_is_active (w))) |
4276 | if (expect_false (!ev_is_active (w))) |
2771 | return; |
4277 | return; |
2772 | |
4278 | |
2773 | EV_FREQUENT_CHECK; |
4279 | EV_FREQUENT_CHECK; |
2774 | |
4280 | |
2775 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
4281 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
2776 | ev_stop (EV_A_ (W)w); |
4282 | ev_stop (EV_A_ (W)w); |
2777 | |
4283 | |
2778 | EV_FREQUENT_CHECK; |
4284 | EV_FREQUENT_CHECK; |
2779 | } |
4285 | } |
|
|
4286 | |
|
|
4287 | #endif |
2780 | |
4288 | |
2781 | #if EV_STAT_ENABLE |
4289 | #if EV_STAT_ENABLE |
2782 | |
4290 | |
2783 | # ifdef _WIN32 |
4291 | # ifdef _WIN32 |
2784 | # undef lstat |
4292 | # undef lstat |
… | |
… | |
2787 | |
4295 | |
2788 | #define DEF_STAT_INTERVAL 5.0074891 |
4296 | #define DEF_STAT_INTERVAL 5.0074891 |
2789 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
4297 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
2790 | #define MIN_STAT_INTERVAL 0.1074891 |
4298 | #define MIN_STAT_INTERVAL 0.1074891 |
2791 | |
4299 | |
2792 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
4300 | noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2793 | |
4301 | |
2794 | #if EV_USE_INOTIFY |
4302 | #if EV_USE_INOTIFY |
2795 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2796 | |
4303 | |
2797 | static void noinline |
4304 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4305 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
4306 | |
|
|
4307 | noinline |
|
|
4308 | static void |
2798 | infy_add (EV_P_ ev_stat *w) |
4309 | infy_add (EV_P_ ev_stat *w) |
2799 | { |
4310 | { |
2800 | 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); |
4311 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4312 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4313 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4314 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
2801 | |
4315 | |
2802 | if (w->wd < 0) |
4316 | if (w->wd >= 0) |
|
|
4317 | { |
|
|
4318 | struct statfs sfs; |
|
|
4319 | |
|
|
4320 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4321 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4322 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4323 | |
|
|
4324 | if (!fs_2625) |
|
|
4325 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4326 | else if (!statfs (w->path, &sfs) |
|
|
4327 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4328 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4329 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4330 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4331 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4332 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4333 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4334 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4335 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4336 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4337 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4338 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4339 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4340 | else |
|
|
4341 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2803 | { |
4342 | } |
|
|
4343 | else |
|
|
4344 | { |
|
|
4345 | /* can't use inotify, continue to stat */ |
2804 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
4346 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2805 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2806 | |
4347 | |
2807 | /* monitor some parent directory for speedup hints */ |
4348 | /* if path is not there, monitor some parent directory for speedup hints */ |
2808 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
4349 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2809 | /* but an efficiency issue only */ |
4350 | /* but an efficiency issue only */ |
2810 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
4351 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2811 | { |
4352 | { |
2812 | char path [4096]; |
4353 | char path [4096]; |
… | |
… | |
2822 | if (!pend || pend == path) |
4363 | if (!pend || pend == path) |
2823 | break; |
4364 | break; |
2824 | |
4365 | |
2825 | *pend = 0; |
4366 | *pend = 0; |
2826 | w->wd = inotify_add_watch (fs_fd, path, mask); |
4367 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2827 | } |
4368 | } |
2828 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
4369 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2829 | } |
4370 | } |
2830 | } |
4371 | } |
2831 | |
4372 | |
2832 | if (w->wd >= 0) |
4373 | if (w->wd >= 0) |
2833 | { |
|
|
2834 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
4374 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
2835 | |
4375 | |
2836 | /* now local changes will be tracked by inotify, but remote changes won't */ |
4376 | /* now re-arm timer, if required */ |
2837 | /* unless the filesystem it known to be local, we therefore still poll */ |
4377 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2838 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2839 | struct statfs sfs; |
|
|
2840 | |
|
|
2841 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2842 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2843 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2844 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2845 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2846 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2847 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2848 | return; |
|
|
2849 | |
|
|
2850 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2851 | ev_timer_again (EV_A_ &w->timer); |
4378 | ev_timer_again (EV_A_ &w->timer); |
2852 | } |
4379 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2853 | } |
4380 | } |
2854 | |
4381 | |
2855 | static void noinline |
4382 | noinline |
|
|
4383 | static void |
2856 | infy_del (EV_P_ ev_stat *w) |
4384 | infy_del (EV_P_ ev_stat *w) |
2857 | { |
4385 | { |
2858 | int slot; |
4386 | int slot; |
2859 | int wd = w->wd; |
4387 | int wd = w->wd; |
2860 | |
4388 | |
2861 | if (wd < 0) |
4389 | if (wd < 0) |
2862 | return; |
4390 | return; |
2863 | |
4391 | |
2864 | w->wd = -2; |
4392 | w->wd = -2; |
2865 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
4393 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
2866 | wlist_del (&fs_hash [slot].head, (WL)w); |
4394 | wlist_del (&fs_hash [slot].head, (WL)w); |
2867 | |
4395 | |
2868 | /* remove this watcher, if others are watching it, they will rearm */ |
4396 | /* remove this watcher, if others are watching it, they will rearm */ |
2869 | inotify_rm_watch (fs_fd, wd); |
4397 | inotify_rm_watch (fs_fd, wd); |
2870 | } |
4398 | } |
2871 | |
4399 | |
2872 | static void noinline |
4400 | noinline |
|
|
4401 | static void |
2873 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
4402 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
2874 | { |
4403 | { |
2875 | if (slot < 0) |
4404 | if (slot < 0) |
2876 | /* overflow, need to check for all hash slots */ |
4405 | /* overflow, need to check for all hash slots */ |
2877 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4406 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
2878 | infy_wd (EV_A_ slot, wd, ev); |
4407 | infy_wd (EV_A_ slot, wd, ev); |
2879 | else |
4408 | else |
2880 | { |
4409 | { |
2881 | WL w_; |
4410 | WL w_; |
2882 | |
4411 | |
2883 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
4412 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
2884 | { |
4413 | { |
2885 | ev_stat *w = (ev_stat *)w_; |
4414 | ev_stat *w = (ev_stat *)w_; |
2886 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
4415 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
2887 | |
4416 | |
2888 | if (w->wd == wd || wd == -1) |
4417 | if (w->wd == wd || wd == -1) |
2889 | { |
4418 | { |
2890 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
4419 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2891 | { |
4420 | { |
2892 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
4421 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
2893 | w->wd = -1; |
4422 | w->wd = -1; |
2894 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4423 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2895 | } |
4424 | } |
2896 | |
4425 | |
2897 | stat_timer_cb (EV_A_ &w->timer, 0); |
4426 | stat_timer_cb (EV_A_ &w->timer, 0); |
… | |
… | |
2902 | |
4431 | |
2903 | static void |
4432 | static void |
2904 | infy_cb (EV_P_ ev_io *w, int revents) |
4433 | infy_cb (EV_P_ ev_io *w, int revents) |
2905 | { |
4434 | { |
2906 | char buf [EV_INOTIFY_BUFSIZE]; |
4435 | char buf [EV_INOTIFY_BUFSIZE]; |
2907 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2908 | int ofs; |
4436 | int ofs; |
2909 | int len = read (fs_fd, buf, sizeof (buf)); |
4437 | int len = read (fs_fd, buf, sizeof (buf)); |
2910 | |
4438 | |
2911 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
4439 | for (ofs = 0; ofs < len; ) |
|
|
4440 | { |
|
|
4441 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2912 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
4442 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4443 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4444 | } |
2913 | } |
4445 | } |
2914 | |
4446 | |
2915 | inline_size void |
4447 | inline_size ecb_cold |
|
|
4448 | void |
2916 | check_2625 (EV_P) |
4449 | ev_check_2625 (EV_P) |
2917 | { |
4450 | { |
2918 | /* kernels < 2.6.25 are borked |
4451 | /* kernels < 2.6.25 are borked |
2919 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
4452 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2920 | */ |
4453 | */ |
2921 | struct utsname buf; |
4454 | if (ev_linux_version () < 0x020619) |
2922 | int major, minor, micro; |
|
|
2923 | |
|
|
2924 | if (uname (&buf)) |
|
|
2925 | return; |
4455 | return; |
2926 | |
4456 | |
2927 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2928 | return; |
|
|
2929 | |
|
|
2930 | if (major < 2 |
|
|
2931 | || (major == 2 && minor < 6) |
|
|
2932 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2933 | return; |
|
|
2934 | |
|
|
2935 | fs_2625 = 1; |
4457 | fs_2625 = 1; |
|
|
4458 | } |
|
|
4459 | |
|
|
4460 | inline_size int |
|
|
4461 | infy_newfd (void) |
|
|
4462 | { |
|
|
4463 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4464 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4465 | if (fd >= 0) |
|
|
4466 | return fd; |
|
|
4467 | #endif |
|
|
4468 | return inotify_init (); |
2936 | } |
4469 | } |
2937 | |
4470 | |
2938 | inline_size void |
4471 | inline_size void |
2939 | infy_init (EV_P) |
4472 | infy_init (EV_P) |
2940 | { |
4473 | { |
2941 | if (fs_fd != -2) |
4474 | if (fs_fd != -2) |
2942 | return; |
4475 | return; |
2943 | |
4476 | |
2944 | fs_fd = -1; |
4477 | fs_fd = -1; |
2945 | |
4478 | |
2946 | check_2625 (EV_A); |
4479 | ev_check_2625 (EV_A); |
2947 | |
4480 | |
2948 | fs_fd = inotify_init (); |
4481 | fs_fd = infy_newfd (); |
2949 | |
4482 | |
2950 | if (fs_fd >= 0) |
4483 | if (fs_fd >= 0) |
2951 | { |
4484 | { |
|
|
4485 | fd_intern (fs_fd); |
2952 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
4486 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2953 | ev_set_priority (&fs_w, EV_MAXPRI); |
4487 | ev_set_priority (&fs_w, EV_MAXPRI); |
2954 | ev_io_start (EV_A_ &fs_w); |
4488 | ev_io_start (EV_A_ &fs_w); |
|
|
4489 | ev_unref (EV_A); |
2955 | } |
4490 | } |
2956 | } |
4491 | } |
2957 | |
4492 | |
2958 | inline_size void |
4493 | inline_size void |
2959 | infy_fork (EV_P) |
4494 | infy_fork (EV_P) |
… | |
… | |
2961 | int slot; |
4496 | int slot; |
2962 | |
4497 | |
2963 | if (fs_fd < 0) |
4498 | if (fs_fd < 0) |
2964 | return; |
4499 | return; |
2965 | |
4500 | |
|
|
4501 | ev_ref (EV_A); |
|
|
4502 | ev_io_stop (EV_A_ &fs_w); |
2966 | close (fs_fd); |
4503 | close (fs_fd); |
2967 | fs_fd = inotify_init (); |
4504 | fs_fd = infy_newfd (); |
2968 | |
4505 | |
|
|
4506 | if (fs_fd >= 0) |
|
|
4507 | { |
|
|
4508 | fd_intern (fs_fd); |
|
|
4509 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4510 | ev_io_start (EV_A_ &fs_w); |
|
|
4511 | ev_unref (EV_A); |
|
|
4512 | } |
|
|
4513 | |
2969 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
4514 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
2970 | { |
4515 | { |
2971 | WL w_ = fs_hash [slot].head; |
4516 | WL w_ = fs_hash [slot].head; |
2972 | fs_hash [slot].head = 0; |
4517 | fs_hash [slot].head = 0; |
2973 | |
4518 | |
2974 | while (w_) |
4519 | while (w_) |
… | |
… | |
2979 | w->wd = -1; |
4524 | w->wd = -1; |
2980 | |
4525 | |
2981 | if (fs_fd >= 0) |
4526 | if (fs_fd >= 0) |
2982 | infy_add (EV_A_ w); /* re-add, no matter what */ |
4527 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2983 | else |
4528 | else |
|
|
4529 | { |
|
|
4530 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4531 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2984 | ev_timer_again (EV_A_ &w->timer); |
4532 | ev_timer_again (EV_A_ &w->timer); |
|
|
4533 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4534 | } |
2985 | } |
4535 | } |
2986 | } |
4536 | } |
2987 | } |
4537 | } |
2988 | |
4538 | |
2989 | #endif |
4539 | #endif |
… | |
… | |
2993 | #else |
4543 | #else |
2994 | # define EV_LSTAT(p,b) lstat (p, b) |
4544 | # define EV_LSTAT(p,b) lstat (p, b) |
2995 | #endif |
4545 | #endif |
2996 | |
4546 | |
2997 | void |
4547 | void |
2998 | ev_stat_stat (EV_P_ ev_stat *w) |
4548 | ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT |
2999 | { |
4549 | { |
3000 | if (lstat (w->path, &w->attr) < 0) |
4550 | if (lstat (w->path, &w->attr) < 0) |
3001 | w->attr.st_nlink = 0; |
4551 | w->attr.st_nlink = 0; |
3002 | else if (!w->attr.st_nlink) |
4552 | else if (!w->attr.st_nlink) |
3003 | w->attr.st_nlink = 1; |
4553 | w->attr.st_nlink = 1; |
3004 | } |
4554 | } |
3005 | |
4555 | |
3006 | static void noinline |
4556 | noinline |
|
|
4557 | static void |
3007 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
4558 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3008 | { |
4559 | { |
3009 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
4560 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3010 | |
4561 | |
3011 | /* we copy this here each the time so that */ |
4562 | ev_statdata prev = w->attr; |
3012 | /* prev has the old value when the callback gets invoked */ |
|
|
3013 | w->prev = w->attr; |
|
|
3014 | ev_stat_stat (EV_A_ w); |
4563 | ev_stat_stat (EV_A_ w); |
3015 | |
4564 | |
3016 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
4565 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3017 | if ( |
4566 | if ( |
3018 | w->prev.st_dev != w->attr.st_dev |
4567 | prev.st_dev != w->attr.st_dev |
3019 | || w->prev.st_ino != w->attr.st_ino |
4568 | || prev.st_ino != w->attr.st_ino |
3020 | || w->prev.st_mode != w->attr.st_mode |
4569 | || prev.st_mode != w->attr.st_mode |
3021 | || w->prev.st_nlink != w->attr.st_nlink |
4570 | || prev.st_nlink != w->attr.st_nlink |
3022 | || w->prev.st_uid != w->attr.st_uid |
4571 | || prev.st_uid != w->attr.st_uid |
3023 | || w->prev.st_gid != w->attr.st_gid |
4572 | || prev.st_gid != w->attr.st_gid |
3024 | || w->prev.st_rdev != w->attr.st_rdev |
4573 | || prev.st_rdev != w->attr.st_rdev |
3025 | || w->prev.st_size != w->attr.st_size |
4574 | || prev.st_size != w->attr.st_size |
3026 | || w->prev.st_atime != w->attr.st_atime |
4575 | || prev.st_atime != w->attr.st_atime |
3027 | || w->prev.st_mtime != w->attr.st_mtime |
4576 | || prev.st_mtime != w->attr.st_mtime |
3028 | || w->prev.st_ctime != w->attr.st_ctime |
4577 | || prev.st_ctime != w->attr.st_ctime |
3029 | ) { |
4578 | ) { |
|
|
4579 | /* we only update w->prev on actual differences */ |
|
|
4580 | /* in case we test more often than invoke the callback, */ |
|
|
4581 | /* to ensure that prev is always different to attr */ |
|
|
4582 | w->prev = prev; |
|
|
4583 | |
3030 | #if EV_USE_INOTIFY |
4584 | #if EV_USE_INOTIFY |
3031 | if (fs_fd >= 0) |
4585 | if (fs_fd >= 0) |
3032 | { |
4586 | { |
3033 | infy_del (EV_A_ w); |
4587 | infy_del (EV_A_ w); |
3034 | infy_add (EV_A_ w); |
4588 | infy_add (EV_A_ w); |
… | |
… | |
3039 | ev_feed_event (EV_A_ w, EV_STAT); |
4593 | ev_feed_event (EV_A_ w, EV_STAT); |
3040 | } |
4594 | } |
3041 | } |
4595 | } |
3042 | |
4596 | |
3043 | void |
4597 | void |
3044 | ev_stat_start (EV_P_ ev_stat *w) |
4598 | ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT |
3045 | { |
4599 | { |
3046 | if (expect_false (ev_is_active (w))) |
4600 | if (expect_false (ev_is_active (w))) |
3047 | return; |
4601 | return; |
3048 | |
4602 | |
3049 | ev_stat_stat (EV_A_ w); |
4603 | ev_stat_stat (EV_A_ w); |
… | |
… | |
3059 | |
4613 | |
3060 | if (fs_fd >= 0) |
4614 | if (fs_fd >= 0) |
3061 | infy_add (EV_A_ w); |
4615 | infy_add (EV_A_ w); |
3062 | else |
4616 | else |
3063 | #endif |
4617 | #endif |
|
|
4618 | { |
3064 | ev_timer_again (EV_A_ &w->timer); |
4619 | ev_timer_again (EV_A_ &w->timer); |
|
|
4620 | ev_unref (EV_A); |
|
|
4621 | } |
3065 | |
4622 | |
3066 | ev_start (EV_A_ (W)w, 1); |
4623 | ev_start (EV_A_ (W)w, 1); |
3067 | |
4624 | |
3068 | EV_FREQUENT_CHECK; |
4625 | EV_FREQUENT_CHECK; |
3069 | } |
4626 | } |
3070 | |
4627 | |
3071 | void |
4628 | void |
3072 | ev_stat_stop (EV_P_ ev_stat *w) |
4629 | ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT |
3073 | { |
4630 | { |
3074 | clear_pending (EV_A_ (W)w); |
4631 | clear_pending (EV_A_ (W)w); |
3075 | if (expect_false (!ev_is_active (w))) |
4632 | if (expect_false (!ev_is_active (w))) |
3076 | return; |
4633 | return; |
3077 | |
4634 | |
3078 | EV_FREQUENT_CHECK; |
4635 | EV_FREQUENT_CHECK; |
3079 | |
4636 | |
3080 | #if EV_USE_INOTIFY |
4637 | #if EV_USE_INOTIFY |
3081 | infy_del (EV_A_ w); |
4638 | infy_del (EV_A_ w); |
3082 | #endif |
4639 | #endif |
|
|
4640 | |
|
|
4641 | if (ev_is_active (&w->timer)) |
|
|
4642 | { |
|
|
4643 | ev_ref (EV_A); |
3083 | ev_timer_stop (EV_A_ &w->timer); |
4644 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4645 | } |
3084 | |
4646 | |
3085 | ev_stop (EV_A_ (W)w); |
4647 | ev_stop (EV_A_ (W)w); |
3086 | |
4648 | |
3087 | EV_FREQUENT_CHECK; |
4649 | EV_FREQUENT_CHECK; |
3088 | } |
4650 | } |
3089 | #endif |
4651 | #endif |
3090 | |
4652 | |
3091 | #if EV_IDLE_ENABLE |
4653 | #if EV_IDLE_ENABLE |
3092 | void |
4654 | void |
3093 | ev_idle_start (EV_P_ ev_idle *w) |
4655 | ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT |
3094 | { |
4656 | { |
3095 | if (expect_false (ev_is_active (w))) |
4657 | if (expect_false (ev_is_active (w))) |
3096 | return; |
4658 | return; |
3097 | |
4659 | |
3098 | pri_adjust (EV_A_ (W)w); |
4660 | pri_adjust (EV_A_ (W)w); |
… | |
… | |
3103 | int active = ++idlecnt [ABSPRI (w)]; |
4665 | int active = ++idlecnt [ABSPRI (w)]; |
3104 | |
4666 | |
3105 | ++idleall; |
4667 | ++idleall; |
3106 | ev_start (EV_A_ (W)w, active); |
4668 | ev_start (EV_A_ (W)w, active); |
3107 | |
4669 | |
3108 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
4670 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit); |
3109 | idles [ABSPRI (w)][active - 1] = w; |
4671 | idles [ABSPRI (w)][active - 1] = w; |
3110 | } |
4672 | } |
3111 | |
4673 | |
3112 | EV_FREQUENT_CHECK; |
4674 | EV_FREQUENT_CHECK; |
3113 | } |
4675 | } |
3114 | |
4676 | |
3115 | void |
4677 | void |
3116 | ev_idle_stop (EV_P_ ev_idle *w) |
4678 | ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT |
3117 | { |
4679 | { |
3118 | clear_pending (EV_A_ (W)w); |
4680 | clear_pending (EV_A_ (W)w); |
3119 | if (expect_false (!ev_is_active (w))) |
4681 | if (expect_false (!ev_is_active (w))) |
3120 | return; |
4682 | return; |
3121 | |
4683 | |
… | |
… | |
3133 | |
4695 | |
3134 | EV_FREQUENT_CHECK; |
4696 | EV_FREQUENT_CHECK; |
3135 | } |
4697 | } |
3136 | #endif |
4698 | #endif |
3137 | |
4699 | |
|
|
4700 | #if EV_PREPARE_ENABLE |
3138 | void |
4701 | void |
3139 | ev_prepare_start (EV_P_ ev_prepare *w) |
4702 | ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT |
3140 | { |
4703 | { |
3141 | if (expect_false (ev_is_active (w))) |
4704 | if (expect_false (ev_is_active (w))) |
3142 | return; |
4705 | return; |
3143 | |
4706 | |
3144 | EV_FREQUENT_CHECK; |
4707 | EV_FREQUENT_CHECK; |
3145 | |
4708 | |
3146 | ev_start (EV_A_ (W)w, ++preparecnt); |
4709 | ev_start (EV_A_ (W)w, ++preparecnt); |
3147 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
4710 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit); |
3148 | prepares [preparecnt - 1] = w; |
4711 | prepares [preparecnt - 1] = w; |
3149 | |
4712 | |
3150 | EV_FREQUENT_CHECK; |
4713 | EV_FREQUENT_CHECK; |
3151 | } |
4714 | } |
3152 | |
4715 | |
3153 | void |
4716 | void |
3154 | ev_prepare_stop (EV_P_ ev_prepare *w) |
4717 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT |
3155 | { |
4718 | { |
3156 | clear_pending (EV_A_ (W)w); |
4719 | clear_pending (EV_A_ (W)w); |
3157 | if (expect_false (!ev_is_active (w))) |
4720 | if (expect_false (!ev_is_active (w))) |
3158 | return; |
4721 | return; |
3159 | |
4722 | |
… | |
… | |
3168 | |
4731 | |
3169 | ev_stop (EV_A_ (W)w); |
4732 | ev_stop (EV_A_ (W)w); |
3170 | |
4733 | |
3171 | EV_FREQUENT_CHECK; |
4734 | EV_FREQUENT_CHECK; |
3172 | } |
4735 | } |
|
|
4736 | #endif |
3173 | |
4737 | |
|
|
4738 | #if EV_CHECK_ENABLE |
3174 | void |
4739 | void |
3175 | ev_check_start (EV_P_ ev_check *w) |
4740 | ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT |
3176 | { |
4741 | { |
3177 | if (expect_false (ev_is_active (w))) |
4742 | if (expect_false (ev_is_active (w))) |
3178 | return; |
4743 | return; |
3179 | |
4744 | |
3180 | EV_FREQUENT_CHECK; |
4745 | EV_FREQUENT_CHECK; |
3181 | |
4746 | |
3182 | ev_start (EV_A_ (W)w, ++checkcnt); |
4747 | ev_start (EV_A_ (W)w, ++checkcnt); |
3183 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
4748 | array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit); |
3184 | checks [checkcnt - 1] = w; |
4749 | checks [checkcnt - 1] = w; |
3185 | |
4750 | |
3186 | EV_FREQUENT_CHECK; |
4751 | EV_FREQUENT_CHECK; |
3187 | } |
4752 | } |
3188 | |
4753 | |
3189 | void |
4754 | void |
3190 | ev_check_stop (EV_P_ ev_check *w) |
4755 | ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT |
3191 | { |
4756 | { |
3192 | clear_pending (EV_A_ (W)w); |
4757 | clear_pending (EV_A_ (W)w); |
3193 | if (expect_false (!ev_is_active (w))) |
4758 | if (expect_false (!ev_is_active (w))) |
3194 | return; |
4759 | return; |
3195 | |
4760 | |
… | |
… | |
3204 | |
4769 | |
3205 | ev_stop (EV_A_ (W)w); |
4770 | ev_stop (EV_A_ (W)w); |
3206 | |
4771 | |
3207 | EV_FREQUENT_CHECK; |
4772 | EV_FREQUENT_CHECK; |
3208 | } |
4773 | } |
|
|
4774 | #endif |
3209 | |
4775 | |
3210 | #if EV_EMBED_ENABLE |
4776 | #if EV_EMBED_ENABLE |
3211 | void noinline |
4777 | noinline |
|
|
4778 | void |
3212 | ev_embed_sweep (EV_P_ ev_embed *w) |
4779 | ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT |
3213 | { |
4780 | { |
3214 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4781 | ev_run (w->other, EVRUN_NOWAIT); |
3215 | } |
4782 | } |
3216 | |
4783 | |
3217 | static void |
4784 | static void |
3218 | embed_io_cb (EV_P_ ev_io *io, int revents) |
4785 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3219 | { |
4786 | { |
3220 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
4787 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3221 | |
4788 | |
3222 | if (ev_cb (w)) |
4789 | if (ev_cb (w)) |
3223 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
4790 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3224 | else |
4791 | else |
3225 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4792 | ev_run (w->other, EVRUN_NOWAIT); |
3226 | } |
4793 | } |
3227 | |
4794 | |
3228 | static void |
4795 | static void |
3229 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
4796 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3230 | { |
4797 | { |
3231 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
4798 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3232 | |
4799 | |
3233 | { |
4800 | { |
3234 | struct ev_loop *loop = w->other; |
4801 | EV_P = w->other; |
3235 | |
4802 | |
3236 | while (fdchangecnt) |
4803 | while (fdchangecnt) |
3237 | { |
4804 | { |
3238 | fd_reify (EV_A); |
4805 | fd_reify (EV_A); |
3239 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
4806 | ev_run (EV_A_ EVRUN_NOWAIT); |
3240 | } |
4807 | } |
3241 | } |
4808 | } |
3242 | } |
4809 | } |
3243 | |
4810 | |
3244 | static void |
4811 | static void |
… | |
… | |
3247 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
4814 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
3248 | |
4815 | |
3249 | ev_embed_stop (EV_A_ w); |
4816 | ev_embed_stop (EV_A_ w); |
3250 | |
4817 | |
3251 | { |
4818 | { |
3252 | struct ev_loop *loop = w->other; |
4819 | EV_P = w->other; |
3253 | |
4820 | |
3254 | ev_loop_fork (EV_A); |
4821 | ev_loop_fork (EV_A); |
3255 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
4822 | ev_run (EV_A_ EVRUN_NOWAIT); |
3256 | } |
4823 | } |
3257 | |
4824 | |
3258 | ev_embed_start (EV_A_ w); |
4825 | ev_embed_start (EV_A_ w); |
3259 | } |
4826 | } |
3260 | |
4827 | |
… | |
… | |
3265 | ev_idle_stop (EV_A_ idle); |
4832 | ev_idle_stop (EV_A_ idle); |
3266 | } |
4833 | } |
3267 | #endif |
4834 | #endif |
3268 | |
4835 | |
3269 | void |
4836 | void |
3270 | ev_embed_start (EV_P_ ev_embed *w) |
4837 | ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT |
3271 | { |
4838 | { |
3272 | if (expect_false (ev_is_active (w))) |
4839 | if (expect_false (ev_is_active (w))) |
3273 | return; |
4840 | return; |
3274 | |
4841 | |
3275 | { |
4842 | { |
3276 | struct ev_loop *loop = w->other; |
4843 | EV_P = w->other; |
3277 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
4844 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3278 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
4845 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
3279 | } |
4846 | } |
3280 | |
4847 | |
3281 | EV_FREQUENT_CHECK; |
4848 | EV_FREQUENT_CHECK; |
… | |
… | |
3296 | |
4863 | |
3297 | EV_FREQUENT_CHECK; |
4864 | EV_FREQUENT_CHECK; |
3298 | } |
4865 | } |
3299 | |
4866 | |
3300 | void |
4867 | void |
3301 | ev_embed_stop (EV_P_ ev_embed *w) |
4868 | ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT |
3302 | { |
4869 | { |
3303 | clear_pending (EV_A_ (W)w); |
4870 | clear_pending (EV_A_ (W)w); |
3304 | if (expect_false (!ev_is_active (w))) |
4871 | if (expect_false (!ev_is_active (w))) |
3305 | return; |
4872 | return; |
3306 | |
4873 | |
… | |
… | |
3308 | |
4875 | |
3309 | ev_io_stop (EV_A_ &w->io); |
4876 | ev_io_stop (EV_A_ &w->io); |
3310 | ev_prepare_stop (EV_A_ &w->prepare); |
4877 | ev_prepare_stop (EV_A_ &w->prepare); |
3311 | ev_fork_stop (EV_A_ &w->fork); |
4878 | ev_fork_stop (EV_A_ &w->fork); |
3312 | |
4879 | |
|
|
4880 | ev_stop (EV_A_ (W)w); |
|
|
4881 | |
3313 | EV_FREQUENT_CHECK; |
4882 | EV_FREQUENT_CHECK; |
3314 | } |
4883 | } |
3315 | #endif |
4884 | #endif |
3316 | |
4885 | |
3317 | #if EV_FORK_ENABLE |
4886 | #if EV_FORK_ENABLE |
3318 | void |
4887 | void |
3319 | ev_fork_start (EV_P_ ev_fork *w) |
4888 | ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT |
3320 | { |
4889 | { |
3321 | if (expect_false (ev_is_active (w))) |
4890 | if (expect_false (ev_is_active (w))) |
3322 | return; |
4891 | return; |
3323 | |
4892 | |
3324 | EV_FREQUENT_CHECK; |
4893 | EV_FREQUENT_CHECK; |
3325 | |
4894 | |
3326 | ev_start (EV_A_ (W)w, ++forkcnt); |
4895 | ev_start (EV_A_ (W)w, ++forkcnt); |
3327 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
4896 | array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit); |
3328 | forks [forkcnt - 1] = w; |
4897 | forks [forkcnt - 1] = w; |
3329 | |
4898 | |
3330 | EV_FREQUENT_CHECK; |
4899 | EV_FREQUENT_CHECK; |
3331 | } |
4900 | } |
3332 | |
4901 | |
3333 | void |
4902 | void |
3334 | ev_fork_stop (EV_P_ ev_fork *w) |
4903 | ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT |
3335 | { |
4904 | { |
3336 | clear_pending (EV_A_ (W)w); |
4905 | clear_pending (EV_A_ (W)w); |
3337 | if (expect_false (!ev_is_active (w))) |
4906 | if (expect_false (!ev_is_active (w))) |
3338 | return; |
4907 | return; |
3339 | |
4908 | |
… | |
… | |
3350 | |
4919 | |
3351 | EV_FREQUENT_CHECK; |
4920 | EV_FREQUENT_CHECK; |
3352 | } |
4921 | } |
3353 | #endif |
4922 | #endif |
3354 | |
4923 | |
3355 | #if EV_ASYNC_ENABLE |
4924 | #if EV_CLEANUP_ENABLE |
3356 | void |
4925 | void |
3357 | ev_async_start (EV_P_ ev_async *w) |
4926 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
3358 | { |
4927 | { |
3359 | if (expect_false (ev_is_active (w))) |
4928 | if (expect_false (ev_is_active (w))) |
3360 | return; |
4929 | return; |
3361 | |
4930 | |
3362 | evpipe_init (EV_A); |
|
|
3363 | |
|
|
3364 | EV_FREQUENT_CHECK; |
4931 | EV_FREQUENT_CHECK; |
3365 | |
4932 | |
3366 | ev_start (EV_A_ (W)w, ++asynccnt); |
4933 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
3367 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
4934 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit); |
3368 | asyncs [asynccnt - 1] = w; |
4935 | cleanups [cleanupcnt - 1] = w; |
3369 | |
4936 | |
|
|
4937 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4938 | ev_unref (EV_A); |
3370 | EV_FREQUENT_CHECK; |
4939 | EV_FREQUENT_CHECK; |
3371 | } |
4940 | } |
3372 | |
4941 | |
3373 | void |
4942 | void |
3374 | ev_async_stop (EV_P_ ev_async *w) |
4943 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
3375 | { |
4944 | { |
3376 | clear_pending (EV_A_ (W)w); |
4945 | clear_pending (EV_A_ (W)w); |
3377 | if (expect_false (!ev_is_active (w))) |
4946 | if (expect_false (!ev_is_active (w))) |
3378 | return; |
4947 | return; |
3379 | |
4948 | |
3380 | EV_FREQUENT_CHECK; |
4949 | EV_FREQUENT_CHECK; |
|
|
4950 | ev_ref (EV_A); |
|
|
4951 | |
|
|
4952 | { |
|
|
4953 | int active = ev_active (w); |
|
|
4954 | |
|
|
4955 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4956 | ev_active (cleanups [active - 1]) = active; |
|
|
4957 | } |
|
|
4958 | |
|
|
4959 | ev_stop (EV_A_ (W)w); |
|
|
4960 | |
|
|
4961 | EV_FREQUENT_CHECK; |
|
|
4962 | } |
|
|
4963 | #endif |
|
|
4964 | |
|
|
4965 | #if EV_ASYNC_ENABLE |
|
|
4966 | void |
|
|
4967 | ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4968 | { |
|
|
4969 | if (expect_false (ev_is_active (w))) |
|
|
4970 | return; |
|
|
4971 | |
|
|
4972 | w->sent = 0; |
|
|
4973 | |
|
|
4974 | evpipe_init (EV_A); |
|
|
4975 | |
|
|
4976 | EV_FREQUENT_CHECK; |
|
|
4977 | |
|
|
4978 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4979 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit); |
|
|
4980 | asyncs [asynccnt - 1] = w; |
|
|
4981 | |
|
|
4982 | EV_FREQUENT_CHECK; |
|
|
4983 | } |
|
|
4984 | |
|
|
4985 | void |
|
|
4986 | ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
4987 | { |
|
|
4988 | clear_pending (EV_A_ (W)w); |
|
|
4989 | if (expect_false (!ev_is_active (w))) |
|
|
4990 | return; |
|
|
4991 | |
|
|
4992 | EV_FREQUENT_CHECK; |
3381 | |
4993 | |
3382 | { |
4994 | { |
3383 | int active = ev_active (w); |
4995 | int active = ev_active (w); |
3384 | |
4996 | |
3385 | asyncs [active - 1] = asyncs [--asynccnt]; |
4997 | asyncs [active - 1] = asyncs [--asynccnt]; |
… | |
… | |
3390 | |
5002 | |
3391 | EV_FREQUENT_CHECK; |
5003 | EV_FREQUENT_CHECK; |
3392 | } |
5004 | } |
3393 | |
5005 | |
3394 | void |
5006 | void |
3395 | ev_async_send (EV_P_ ev_async *w) |
5007 | ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT |
3396 | { |
5008 | { |
3397 | w->sent = 1; |
5009 | w->sent = 1; |
3398 | evpipe_write (EV_A_ &gotasync); |
5010 | evpipe_write (EV_A_ &async_pending); |
3399 | } |
5011 | } |
3400 | #endif |
5012 | #endif |
3401 | |
5013 | |
3402 | /*****************************************************************************/ |
5014 | /*****************************************************************************/ |
3403 | |
5015 | |
… | |
… | |
3437 | |
5049 | |
3438 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
5050 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
3439 | } |
5051 | } |
3440 | |
5052 | |
3441 | void |
5053 | void |
3442 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
5054 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT |
3443 | { |
5055 | { |
3444 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
5056 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3445 | |
|
|
3446 | if (expect_false (!once)) |
|
|
3447 | { |
|
|
3448 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
3449 | return; |
|
|
3450 | } |
|
|
3451 | |
5057 | |
3452 | once->cb = cb; |
5058 | once->cb = cb; |
3453 | once->arg = arg; |
5059 | once->arg = arg; |
3454 | |
5060 | |
3455 | ev_init (&once->io, once_cb_io); |
5061 | ev_init (&once->io, once_cb_io); |
… | |
… | |
3468 | } |
5074 | } |
3469 | |
5075 | |
3470 | /*****************************************************************************/ |
5076 | /*****************************************************************************/ |
3471 | |
5077 | |
3472 | #if EV_WALK_ENABLE |
5078 | #if EV_WALK_ENABLE |
|
|
5079 | ecb_cold |
3473 | void |
5080 | void |
3474 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
5081 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT |
3475 | { |
5082 | { |
3476 | int i, j; |
5083 | int i, j; |
3477 | ev_watcher_list *wl, *wn; |
5084 | ev_watcher_list *wl, *wn; |
3478 | |
5085 | |
3479 | if (types & (EV_IO | EV_EMBED)) |
5086 | if (types & (EV_IO | EV_EMBED)) |
… | |
… | |
3522 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
5129 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3523 | #endif |
5130 | #endif |
3524 | |
5131 | |
3525 | #if EV_IDLE_ENABLE |
5132 | #if EV_IDLE_ENABLE |
3526 | if (types & EV_IDLE) |
5133 | if (types & EV_IDLE) |
3527 | for (j = NUMPRI; i--; ) |
5134 | for (j = NUMPRI; j--; ) |
3528 | for (i = idlecnt [j]; i--; ) |
5135 | for (i = idlecnt [j]; i--; ) |
3529 | cb (EV_A_ EV_IDLE, idles [j][i]); |
5136 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3530 | #endif |
5137 | #endif |
3531 | |
5138 | |
3532 | #if EV_FORK_ENABLE |
5139 | #if EV_FORK_ENABLE |
… | |
… | |
3540 | if (types & EV_ASYNC) |
5147 | if (types & EV_ASYNC) |
3541 | for (i = asynccnt; i--; ) |
5148 | for (i = asynccnt; i--; ) |
3542 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
5149 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
3543 | #endif |
5150 | #endif |
3544 | |
5151 | |
|
|
5152 | #if EV_PREPARE_ENABLE |
3545 | if (types & EV_PREPARE) |
5153 | if (types & EV_PREPARE) |
3546 | for (i = preparecnt; i--; ) |
5154 | for (i = preparecnt; i--; ) |
3547 | #if EV_EMBED_ENABLE |
5155 | # if EV_EMBED_ENABLE |
3548 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
5156 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
3549 | #endif |
5157 | # endif |
3550 | cb (EV_A_ EV_PREPARE, prepares [i]); |
5158 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
5159 | #endif |
3551 | |
5160 | |
|
|
5161 | #if EV_CHECK_ENABLE |
3552 | if (types & EV_CHECK) |
5162 | if (types & EV_CHECK) |
3553 | for (i = checkcnt; i--; ) |
5163 | for (i = checkcnt; i--; ) |
3554 | cb (EV_A_ EV_CHECK, checks [i]); |
5164 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
5165 | #endif |
3555 | |
5166 | |
|
|
5167 | #if EV_SIGNAL_ENABLE |
3556 | if (types & EV_SIGNAL) |
5168 | if (types & EV_SIGNAL) |
3557 | for (i = 0; i < signalmax; ++i) |
5169 | for (i = 0; i < EV_NSIG - 1; ++i) |
3558 | for (wl = signals [i].head; wl; ) |
5170 | for (wl = signals [i].head; wl; ) |
3559 | { |
5171 | { |
3560 | wn = wl->next; |
5172 | wn = wl->next; |
3561 | cb (EV_A_ EV_SIGNAL, wl); |
5173 | cb (EV_A_ EV_SIGNAL, wl); |
3562 | wl = wn; |
5174 | wl = wn; |
3563 | } |
5175 | } |
|
|
5176 | #endif |
3564 | |
5177 | |
|
|
5178 | #if EV_CHILD_ENABLE |
3565 | if (types & EV_CHILD) |
5179 | if (types & EV_CHILD) |
3566 | for (i = EV_PID_HASHSIZE; i--; ) |
5180 | for (i = (EV_PID_HASHSIZE); i--; ) |
3567 | for (wl = childs [i]; wl; ) |
5181 | for (wl = childs [i]; wl; ) |
3568 | { |
5182 | { |
3569 | wn = wl->next; |
5183 | wn = wl->next; |
3570 | cb (EV_A_ EV_CHILD, wl); |
5184 | cb (EV_A_ EV_CHILD, wl); |
3571 | wl = wn; |
5185 | wl = wn; |
3572 | } |
5186 | } |
|
|
5187 | #endif |
3573 | /* EV_STAT 0x00001000 /* stat data changed */ |
5188 | /* EV_STAT 0x00001000 /* stat data changed */ |
3574 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
5189 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
3575 | } |
5190 | } |
3576 | #endif |
5191 | #endif |
3577 | |
5192 | |
3578 | #if EV_MULTIPLICITY |
5193 | #if EV_MULTIPLICITY |
3579 | #include "ev_wrap.h" |
5194 | #include "ev_wrap.h" |
3580 | #endif |
5195 | #endif |
3581 | |
5196 | |
3582 | #ifdef __cplusplus |
|
|
3583 | } |
|
|
3584 | #endif |
|
|
3585 | |
|
|