1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without 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" |
50 | # endif |
46 | # endif |
|
|
47 | |
|
|
48 | #if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # 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 |
55 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
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 EV_FEATURE_OS |
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 |
|
|
92 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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 EV_FEATURE_BACKENDS |
|
|
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 |
|
|
112 | # ifndef EV_USE_EPOLL |
108 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
109 | # else |
|
|
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 |
|
|
115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
|
|
121 | # ifndef EV_USE_KQUEUE |
116 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
117 | # else |
|
|
118 | # define EV_USE_KQUEUE 0 |
|
|
119 | # endif |
123 | # endif |
|
|
124 | # else |
|
|
125 | # undef EV_USE_KQUEUE |
|
|
126 | # define EV_USE_KQUEUE 0 |
120 | # endif |
127 | # endif |
121 | |
128 | |
122 | # ifndef EV_USE_PORT |
|
|
123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
130 | # ifndef EV_USE_PORT |
124 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
125 | # else |
|
|
126 | # define EV_USE_PORT 0 |
|
|
127 | # endif |
132 | # endif |
|
|
133 | # else |
|
|
134 | # undef EV_USE_PORT |
|
|
135 | # define EV_USE_PORT 0 |
128 | # endif |
136 | # endif |
129 | |
137 | |
130 | # ifndef EV_USE_INOTIFY |
|
|
131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
|
|
139 | # ifndef EV_USE_INOTIFY |
132 | # define EV_USE_INOTIFY EV_FEATURE_OS |
140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
133 | # else |
|
|
134 | # define EV_USE_INOTIFY 0 |
|
|
135 | # endif |
141 | # endif |
|
|
142 | # else |
|
|
143 | # undef EV_USE_INOTIFY |
|
|
144 | # define EV_USE_INOTIFY 0 |
136 | # endif |
145 | # endif |
137 | |
146 | |
138 | # ifndef EV_USE_SIGNALFD |
|
|
139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
|
|
148 | # ifndef EV_USE_SIGNALFD |
140 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
141 | # else |
|
|
142 | # define EV_USE_SIGNALFD 0 |
|
|
143 | # endif |
150 | # endif |
|
|
151 | # else |
|
|
152 | # undef EV_USE_SIGNALFD |
|
|
153 | # define EV_USE_SIGNALFD 0 |
144 | # endif |
154 | # endif |
145 | |
155 | |
|
|
156 | # if HAVE_EVENTFD |
146 | # ifndef EV_USE_EVENTFD |
157 | # ifndef EV_USE_EVENTFD |
147 | # if HAVE_EVENTFD |
|
|
148 | # define EV_USE_EVENTFD EV_FEATURE_OS |
158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
149 | # else |
|
|
150 | # define EV_USE_EVENTFD 0 |
|
|
151 | # endif |
159 | # endif |
|
|
160 | # else |
|
|
161 | # undef EV_USE_EVENTFD |
|
|
162 | # define EV_USE_EVENTFD 0 |
152 | # endif |
163 | # endif |
153 | |
164 | |
154 | #endif |
165 | #endif |
155 | |
166 | |
156 | #include <math.h> |
|
|
157 | #include <stdlib.h> |
167 | #include <stdlib.h> |
158 | #include <string.h> |
168 | #include <string.h> |
159 | #include <fcntl.h> |
169 | #include <fcntl.h> |
160 | #include <stddef.h> |
170 | #include <stddef.h> |
161 | |
171 | |
… | |
… | |
172 | #ifdef EV_H |
182 | #ifdef EV_H |
173 | # include EV_H |
183 | # include EV_H |
174 | #else |
184 | #else |
175 | # include "ev.h" |
185 | # include "ev.h" |
176 | #endif |
186 | #endif |
|
|
187 | |
|
|
188 | EV_CPP(extern "C" {) |
177 | |
189 | |
178 | #ifndef _WIN32 |
190 | #ifndef _WIN32 |
179 | # include <sys/time.h> |
191 | # include <sys/time.h> |
180 | # include <sys/wait.h> |
192 | # include <sys/wait.h> |
181 | # include <unistd.h> |
193 | # include <unistd.h> |
… | |
… | |
186 | # ifndef EV_SELECT_IS_WINSOCKET |
198 | # ifndef EV_SELECT_IS_WINSOCKET |
187 | # define EV_SELECT_IS_WINSOCKET 1 |
199 | # define EV_SELECT_IS_WINSOCKET 1 |
188 | # endif |
200 | # endif |
189 | # undef EV_AVOID_STDIO |
201 | # undef EV_AVOID_STDIO |
190 | #endif |
202 | #endif |
|
|
203 | |
|
|
204 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
|
205 | * a limit of 1024 into their select. Where people have brains, |
|
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206 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
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207 | * ordered to have a vacuum, or they do anything for money. |
|
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208 | * This might help. Or not. |
|
|
209 | */ |
|
|
210 | #define _DARWIN_UNLIMITED_SELECT 1 |
191 | |
211 | |
192 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
212 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
193 | |
213 | |
194 | /* try to deduce the maximum number of signals on this platform */ |
214 | /* try to deduce the maximum number of signals on this platform */ |
195 | #if defined (EV_NSIG) |
215 | #if defined (EV_NSIG) |
… | |
… | |
217 | /* to make it compile regardless, just remove the above line, */ |
237 | /* to make it compile regardless, just remove the above line, */ |
218 | /* but consider reporting it, too! :) */ |
238 | /* but consider reporting it, too! :) */ |
219 | # define EV_NSIG 65 |
239 | # define EV_NSIG 65 |
220 | #endif |
240 | #endif |
221 | |
241 | |
|
|
242 | #ifndef EV_USE_FLOOR |
|
|
243 | # define EV_USE_FLOOR 0 |
|
|
244 | #endif |
|
|
245 | |
222 | #ifndef EV_USE_CLOCK_SYSCALL |
246 | #ifndef EV_USE_CLOCK_SYSCALL |
223 | # if __linux && __GLIBC__ >= 2 |
247 | # if __linux && __GLIBC__ >= 2 |
224 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
225 | # else |
249 | # else |
226 | # define EV_USE_CLOCK_SYSCALL 0 |
250 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
361 | # undef EV_USE_INOTIFY |
385 | # undef EV_USE_INOTIFY |
362 | # define EV_USE_INOTIFY 0 |
386 | # define EV_USE_INOTIFY 0 |
363 | #endif |
387 | #endif |
364 | |
388 | |
365 | #if !EV_USE_NANOSLEEP |
389 | #if !EV_USE_NANOSLEEP |
366 | # ifndef _WIN32 |
390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
391 | # if !defined(_WIN32) && !defined(__hpux) |
367 | # include <sys/select.h> |
392 | # include <sys/select.h> |
368 | # endif |
393 | # endif |
369 | #endif |
394 | #endif |
370 | |
395 | |
371 | #if EV_USE_INOTIFY |
396 | #if EV_USE_INOTIFY |
372 | # include <sys/utsname.h> |
|
|
373 | # include <sys/statfs.h> |
397 | # include <sys/statfs.h> |
374 | # include <sys/inotify.h> |
398 | # include <sys/inotify.h> |
375 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
399 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
376 | # ifndef IN_DONT_FOLLOW |
400 | # ifndef IN_DONT_FOLLOW |
377 | # undef EV_USE_INOTIFY |
401 | # undef EV_USE_INOTIFY |
… | |
… | |
394 | # define EFD_CLOEXEC O_CLOEXEC |
418 | # define EFD_CLOEXEC O_CLOEXEC |
395 | # else |
419 | # else |
396 | # define EFD_CLOEXEC 02000000 |
420 | # define EFD_CLOEXEC 02000000 |
397 | # endif |
421 | # endif |
398 | # endif |
422 | # endif |
399 | # ifdef __cplusplus |
|
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400 | extern "C" { |
|
|
401 | # endif |
|
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402 | int (eventfd) (unsigned int initval, int flags); |
423 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
403 | # ifdef __cplusplus |
|
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404 | } |
|
|
405 | # endif |
|
|
406 | #endif |
424 | #endif |
407 | |
425 | |
408 | #if EV_USE_SIGNALFD |
426 | #if EV_USE_SIGNALFD |
409 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
427 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
410 | # include <stdint.h> |
428 | # include <stdint.h> |
… | |
… | |
416 | # define SFD_CLOEXEC O_CLOEXEC |
434 | # define SFD_CLOEXEC O_CLOEXEC |
417 | # else |
435 | # else |
418 | # define SFD_CLOEXEC 02000000 |
436 | # define SFD_CLOEXEC 02000000 |
419 | # endif |
437 | # endif |
420 | # endif |
438 | # endif |
421 | # ifdef __cplusplus |
|
|
422 | extern "C" { |
|
|
423 | # endif |
|
|
424 | int signalfd (int fd, const sigset_t *mask, int flags); |
439 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
425 | |
440 | |
426 | struct signalfd_siginfo |
441 | struct signalfd_siginfo |
427 | { |
442 | { |
428 | uint32_t ssi_signo; |
443 | uint32_t ssi_signo; |
429 | char pad[128 - sizeof (uint32_t)]; |
444 | char pad[128 - sizeof (uint32_t)]; |
430 | }; |
445 | }; |
431 | # ifdef __cplusplus |
|
|
432 | } |
|
|
433 | # endif |
446 | #endif |
434 | #endif |
|
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435 | |
|
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436 | |
447 | |
437 | /**/ |
448 | /**/ |
438 | |
449 | |
439 | #if EV_VERIFY >= 3 |
450 | #if EV_VERIFY >= 3 |
440 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
451 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
441 | #else |
452 | #else |
442 | # define EV_FREQUENT_CHECK do { } while (0) |
453 | # define EV_FREQUENT_CHECK do { } while (0) |
443 | #endif |
454 | #endif |
444 | |
455 | |
445 | /* |
456 | /* |
446 | * This is used to avoid floating point rounding problems. |
457 | * This is used to work around floating point rounding problems. |
447 | * It is added to ev_rt_now when scheduling periodics |
|
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448 | * to ensure progress, time-wise, even when rounding |
|
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449 | * errors are against us. |
|
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450 | * This value is good at least till the year 4000. |
458 | * This value is good at least till the year 4000. |
451 | * Better solutions welcome. |
|
|
452 | */ |
459 | */ |
453 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
460 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
461 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
454 | |
462 | |
455 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
463 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
456 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
464 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
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465 | |
|
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466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
457 | |
468 | |
458 | #if __GNUC__ >= 4 |
469 | #if __GNUC__ >= 4 |
459 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
470 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
460 | # define noinline __attribute__ ((noinline)) |
471 | # define noinline __attribute__ ((noinline)) |
461 | #else |
472 | #else |
… | |
… | |
494 | #define ev_active(w) ((W)(w))->active |
505 | #define ev_active(w) ((W)(w))->active |
495 | #define ev_at(w) ((WT)(w))->at |
506 | #define ev_at(w) ((WT)(w))->at |
496 | |
507 | |
497 | #if EV_USE_REALTIME |
508 | #if EV_USE_REALTIME |
498 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
509 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
499 | /* giving it a reasonably high chance of working on typical architetcures */ |
510 | /* giving it a reasonably high chance of working on typical architectures */ |
500 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
511 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
501 | #endif |
512 | #endif |
502 | |
513 | |
503 | #if EV_USE_MONOTONIC |
514 | #if EV_USE_MONOTONIC |
504 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
515 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
… | |
… | |
515 | #endif |
526 | #endif |
516 | |
527 | |
517 | #ifdef _WIN32 |
528 | #ifdef _WIN32 |
518 | # include "ev_win32.c" |
529 | # include "ev_win32.c" |
519 | #endif |
530 | #endif |
|
|
531 | |
|
|
532 | /*****************************************************************************/ |
|
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533 | |
|
|
534 | /* define a suitable floor function (only used by periodics atm) */ |
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535 | |
|
|
536 | #if EV_USE_FLOOR |
|
|
537 | # include <math.h> |
|
|
538 | # define ev_floor(v) floor (v) |
|
|
539 | #else |
|
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540 | |
|
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541 | #include <float.h> |
|
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542 | |
|
|
543 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
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544 | static ev_tstamp noinline |
|
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545 | ev_floor (ev_tstamp v) |
|
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546 | { |
|
|
547 | /* the choice of shift factor is not terribly important */ |
|
|
548 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
549 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
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550 | #else |
|
|
551 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
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552 | #endif |
|
|
553 | |
|
|
554 | /* argument too large for an unsigned long? */ |
|
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555 | if (expect_false (v >= shift)) |
|
|
556 | { |
|
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557 | ev_tstamp f; |
|
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558 | |
|
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559 | if (v == v - 1.) |
|
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560 | return v; /* very large number */ |
|
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561 | |
|
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562 | f = shift * ev_floor (v * (1. / shift)); |
|
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563 | return f + ev_floor (v - f); |
|
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564 | } |
|
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565 | |
|
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566 | /* special treatment for negative args? */ |
|
|
567 | if (expect_false (v < 0.)) |
|
|
568 | { |
|
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569 | ev_tstamp f = -ev_floor (-v); |
|
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570 | |
|
|
571 | return f - (f == v ? 0 : 1); |
|
|
572 | } |
|
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573 | |
|
|
574 | /* fits into an unsigned long */ |
|
|
575 | return (unsigned long)v; |
|
|
576 | } |
|
|
577 | |
|
|
578 | #endif |
|
|
579 | |
|
|
580 | /*****************************************************************************/ |
|
|
581 | |
|
|
582 | #ifdef __linux |
|
|
583 | # include <sys/utsname.h> |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | static unsigned int noinline |
|
|
587 | ev_linux_version (void) |
|
|
588 | { |
|
|
589 | #ifdef __linux |
|
|
590 | unsigned int v = 0; |
|
|
591 | struct utsname buf; |
|
|
592 | int i; |
|
|
593 | char *p = buf.release; |
|
|
594 | |
|
|
595 | if (uname (&buf)) |
|
|
596 | return 0; |
|
|
597 | |
|
|
598 | for (i = 3+1; --i; ) |
|
|
599 | { |
|
|
600 | unsigned int c = 0; |
|
|
601 | |
|
|
602 | for (;;) |
|
|
603 | { |
|
|
604 | if (*p >= '0' && *p <= '9') |
|
|
605 | c = c * 10 + *p++ - '0'; |
|
|
606 | else |
|
|
607 | { |
|
|
608 | p += *p == '.'; |
|
|
609 | break; |
|
|
610 | } |
|
|
611 | } |
|
|
612 | |
|
|
613 | v = (v << 8) | c; |
|
|
614 | } |
|
|
615 | |
|
|
616 | return v; |
|
|
617 | #else |
|
|
618 | return 0; |
|
|
619 | #endif |
|
|
620 | } |
520 | |
621 | |
521 | /*****************************************************************************/ |
622 | /*****************************************************************************/ |
522 | |
623 | |
523 | #if EV_AVOID_STDIO |
624 | #if EV_AVOID_STDIO |
524 | static void noinline |
625 | static void noinline |
… | |
… | |
545 | if (syserr_cb) |
646 | if (syserr_cb) |
546 | syserr_cb (msg); |
647 | syserr_cb (msg); |
547 | else |
648 | else |
548 | { |
649 | { |
549 | #if EV_AVOID_STDIO |
650 | #if EV_AVOID_STDIO |
550 | const char *err = strerror (errno); |
|
|
551 | |
|
|
552 | ev_printerr (msg); |
651 | ev_printerr (msg); |
553 | ev_printerr (": "); |
652 | ev_printerr (": "); |
554 | ev_printerr (err); |
653 | ev_printerr (strerror (errno)); |
555 | ev_printerr ("\n"); |
654 | ev_printerr ("\n"); |
556 | #else |
655 | #else |
557 | perror (msg); |
656 | perror (msg); |
558 | #endif |
657 | #endif |
559 | abort (); |
658 | abort (); |
… | |
… | |
593 | ptr = alloc (ptr, size); |
692 | ptr = alloc (ptr, size); |
594 | |
693 | |
595 | if (!ptr && size) |
694 | if (!ptr && size) |
596 | { |
695 | { |
597 | #if EV_AVOID_STDIO |
696 | #if EV_AVOID_STDIO |
598 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
697 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
599 | #else |
698 | #else |
600 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
699 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
601 | #endif |
700 | #endif |
602 | abort (); |
701 | abort (); |
603 | } |
702 | } |
604 | |
703 | |
605 | return ptr; |
704 | return ptr; |
… | |
… | |
622 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
721 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
623 | unsigned char unused; |
722 | unsigned char unused; |
624 | #if EV_USE_EPOLL |
723 | #if EV_USE_EPOLL |
625 | unsigned int egen; /* generation counter to counter epoll bugs */ |
724 | unsigned int egen; /* generation counter to counter epoll bugs */ |
626 | #endif |
725 | #endif |
627 | #if EV_SELECT_IS_WINSOCKET |
726 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
628 | SOCKET handle; |
727 | SOCKET handle; |
|
|
728 | #endif |
|
|
729 | #if EV_USE_IOCP |
|
|
730 | OVERLAPPED or, ow; |
629 | #endif |
731 | #endif |
630 | } ANFD; |
732 | } ANFD; |
631 | |
733 | |
632 | /* stores the pending event set for a given watcher */ |
734 | /* stores the pending event set for a given watcher */ |
633 | typedef struct |
735 | typedef struct |
… | |
… | |
698 | # define EV_RELEASE_CB (void)0 |
800 | # define EV_RELEASE_CB (void)0 |
699 | # define EV_ACQUIRE_CB (void)0 |
801 | # define EV_ACQUIRE_CB (void)0 |
700 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
802 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
701 | #endif |
803 | #endif |
702 | |
804 | |
703 | #define EVUNLOOP_RECURSE 0x80 |
805 | #define EVBREAK_RECURSE 0x80 |
704 | |
806 | |
705 | /*****************************************************************************/ |
807 | /*****************************************************************************/ |
706 | |
808 | |
707 | #ifndef EV_HAVE_EV_TIME |
809 | #ifndef EV_HAVE_EV_TIME |
708 | ev_tstamp |
810 | ev_tstamp |
… | |
… | |
752 | if (delay > 0.) |
854 | if (delay > 0.) |
753 | { |
855 | { |
754 | #if EV_USE_NANOSLEEP |
856 | #if EV_USE_NANOSLEEP |
755 | struct timespec ts; |
857 | struct timespec ts; |
756 | |
858 | |
757 | ts.tv_sec = (time_t)delay; |
859 | EV_TS_SET (ts, delay); |
758 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
759 | |
|
|
760 | nanosleep (&ts, 0); |
860 | nanosleep (&ts, 0); |
761 | #elif defined(_WIN32) |
861 | #elif defined(_WIN32) |
762 | Sleep ((unsigned long)(delay * 1e3)); |
862 | Sleep ((unsigned long)(delay * 1e3)); |
763 | #else |
863 | #else |
764 | struct timeval tv; |
864 | struct timeval tv; |
765 | |
865 | |
766 | tv.tv_sec = (time_t)delay; |
|
|
767 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
768 | |
|
|
769 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
866 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
770 | /* something not guaranteed by newer posix versions, but guaranteed */ |
867 | /* something not guaranteed by newer posix versions, but guaranteed */ |
771 | /* by older ones */ |
868 | /* by older ones */ |
|
|
869 | EV_TV_SET (tv, delay); |
772 | select (0, 0, 0, 0, &tv); |
870 | select (0, 0, 0, 0, &tv); |
773 | #endif |
871 | #endif |
774 | } |
872 | } |
775 | } |
873 | } |
776 | |
874 | |
777 | /*****************************************************************************/ |
875 | /*****************************************************************************/ |
778 | |
876 | |
779 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
877 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
780 | |
878 | |
781 | /* find a suitable new size for the given array, */ |
879 | /* find a suitable new size for the given array, */ |
782 | /* hopefully by rounding to a ncie-to-malloc size */ |
880 | /* hopefully by rounding to a nice-to-malloc size */ |
783 | inline_size int |
881 | inline_size int |
784 | array_nextsize (int elem, int cur, int cnt) |
882 | array_nextsize (int elem, int cur, int cnt) |
785 | { |
883 | { |
786 | int ncur = cur + 1; |
884 | int ncur = cur + 1; |
787 | |
885 | |
… | |
… | |
922 | inline_size void |
1020 | inline_size void |
923 | fd_reify (EV_P) |
1021 | fd_reify (EV_P) |
924 | { |
1022 | { |
925 | int i; |
1023 | int i; |
926 | |
1024 | |
|
|
1025 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1026 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1027 | { |
|
|
1028 | int fd = fdchanges [i]; |
|
|
1029 | ANFD *anfd = anfds + fd; |
|
|
1030 | |
|
|
1031 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1032 | { |
|
|
1033 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1034 | |
|
|
1035 | if (handle != anfd->handle) |
|
|
1036 | { |
|
|
1037 | unsigned long arg; |
|
|
1038 | |
|
|
1039 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1040 | |
|
|
1041 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1042 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1043 | anfd->events = 0; |
|
|
1044 | anfd->handle = handle; |
|
|
1045 | } |
|
|
1046 | } |
|
|
1047 | } |
|
|
1048 | #endif |
|
|
1049 | |
927 | for (i = 0; i < fdchangecnt; ++i) |
1050 | for (i = 0; i < fdchangecnt; ++i) |
928 | { |
1051 | { |
929 | int fd = fdchanges [i]; |
1052 | int fd = fdchanges [i]; |
930 | ANFD *anfd = anfds + fd; |
1053 | ANFD *anfd = anfds + fd; |
931 | ev_io *w; |
1054 | ev_io *w; |
932 | |
1055 | |
933 | unsigned char events = 0; |
1056 | unsigned char o_events = anfd->events; |
|
|
1057 | unsigned char o_reify = anfd->reify; |
934 | |
1058 | |
935 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1059 | anfd->reify = 0; |
936 | events |= (unsigned char)w->events; |
|
|
937 | |
1060 | |
938 | #if EV_SELECT_IS_WINSOCKET |
1061 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
939 | if (events) |
|
|
940 | { |
1062 | { |
941 | unsigned long arg; |
1063 | anfd->events = 0; |
942 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
1064 | |
943 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
1065 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1066 | anfd->events |= (unsigned char)w->events; |
|
|
1067 | |
|
|
1068 | if (o_events != anfd->events) |
|
|
1069 | o_reify = EV__IOFDSET; /* actually |= */ |
944 | } |
1070 | } |
945 | #endif |
|
|
946 | |
1071 | |
947 | { |
1072 | if (o_reify & EV__IOFDSET) |
948 | unsigned char o_events = anfd->events; |
|
|
949 | unsigned char o_reify = anfd->reify; |
|
|
950 | |
|
|
951 | anfd->reify = 0; |
|
|
952 | anfd->events = events; |
|
|
953 | |
|
|
954 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
955 | backend_modify (EV_A_ fd, o_events, events); |
1073 | backend_modify (EV_A_ fd, o_events, anfd->events); |
956 | } |
|
|
957 | } |
1074 | } |
958 | |
1075 | |
959 | fdchangecnt = 0; |
1076 | fdchangecnt = 0; |
960 | } |
1077 | } |
961 | |
1078 | |
… | |
… | |
1054 | } |
1171 | } |
1055 | |
1172 | |
1056 | /*****************************************************************************/ |
1173 | /*****************************************************************************/ |
1057 | |
1174 | |
1058 | /* |
1175 | /* |
1059 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
1176 | * the heap functions want a real array index. array index 0 is guaranteed to not |
1060 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1177 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1061 | * the branching factor of the d-tree. |
1178 | * the branching factor of the d-tree. |
1062 | */ |
1179 | */ |
1063 | |
1180 | |
1064 | /* |
1181 | /* |
… | |
… | |
1251 | inline_size void |
1368 | inline_size void |
1252 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1369 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1253 | { |
1370 | { |
1254 | if (!*flag) |
1371 | if (!*flag) |
1255 | { |
1372 | { |
1256 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1257 | char dummy; |
|
|
1258 | |
|
|
1259 | *flag = 1; |
1373 | *flag = 1; |
1260 | |
1374 | |
|
|
1375 | pipe_write_skipped = 1; |
|
|
1376 | |
|
|
1377 | if (pipe_write_wanted) |
|
|
1378 | { |
|
|
1379 | int old_errno = errno; /* save errno because write will clobber it */ |
|
|
1380 | char dummy; |
|
|
1381 | |
|
|
1382 | pipe_write_skipped = 0; |
|
|
1383 | |
1261 | #if EV_USE_EVENTFD |
1384 | #if EV_USE_EVENTFD |
1262 | if (evfd >= 0) |
1385 | if (evfd >= 0) |
1263 | { |
1386 | { |
1264 | uint64_t counter = 1; |
1387 | uint64_t counter = 1; |
1265 | write (evfd, &counter, sizeof (uint64_t)); |
1388 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1389 | } |
|
|
1390 | else |
|
|
1391 | #endif |
|
|
1392 | { |
|
|
1393 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1394 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1395 | /* so when you think this write should be a send instead, please find out */ |
|
|
1396 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1397 | /* tell me. thank you. */ |
|
|
1398 | write (evpipe [1], &dummy, 1); |
|
|
1399 | } |
|
|
1400 | |
|
|
1401 | errno = old_errno; |
1266 | } |
1402 | } |
1267 | else |
|
|
1268 | #endif |
|
|
1269 | write (evpipe [1], &dummy, 1); |
|
|
1270 | |
|
|
1271 | errno = old_errno; |
|
|
1272 | } |
1403 | } |
1273 | } |
1404 | } |
1274 | |
1405 | |
1275 | /* called whenever the libev signal pipe */ |
1406 | /* called whenever the libev signal pipe */ |
1276 | /* got some events (signal, async) */ |
1407 | /* got some events (signal, async) */ |
1277 | static void |
1408 | static void |
1278 | pipecb (EV_P_ ev_io *iow, int revents) |
1409 | pipecb (EV_P_ ev_io *iow, int revents) |
1279 | { |
1410 | { |
1280 | int i; |
1411 | int i; |
1281 | |
1412 | |
|
|
1413 | if (revents & EV_READ) |
|
|
1414 | { |
1282 | #if EV_USE_EVENTFD |
1415 | #if EV_USE_EVENTFD |
1283 | if (evfd >= 0) |
1416 | if (evfd >= 0) |
1284 | { |
1417 | { |
1285 | uint64_t counter; |
1418 | uint64_t counter; |
1286 | read (evfd, &counter, sizeof (uint64_t)); |
1419 | read (evfd, &counter, sizeof (uint64_t)); |
1287 | } |
1420 | } |
1288 | else |
1421 | else |
1289 | #endif |
1422 | #endif |
1290 | { |
1423 | { |
1291 | char dummy; |
1424 | char dummy; |
|
|
1425 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1292 | read (evpipe [0], &dummy, 1); |
1426 | read (evpipe [0], &dummy, 1); |
|
|
1427 | } |
1293 | } |
1428 | } |
1294 | |
1429 | |
|
|
1430 | pipe_write_skipped = 0; |
|
|
1431 | |
|
|
1432 | #if EV_SIGNAL_ENABLE |
1295 | if (sig_pending) |
1433 | if (sig_pending) |
1296 | { |
1434 | { |
1297 | sig_pending = 0; |
1435 | sig_pending = 0; |
1298 | |
1436 | |
1299 | for (i = EV_NSIG - 1; i--; ) |
1437 | for (i = EV_NSIG - 1; i--; ) |
1300 | if (expect_false (signals [i].pending)) |
1438 | if (expect_false (signals [i].pending)) |
1301 | ev_feed_signal_event (EV_A_ i + 1); |
1439 | ev_feed_signal_event (EV_A_ i + 1); |
1302 | } |
1440 | } |
|
|
1441 | #endif |
1303 | |
1442 | |
1304 | #if EV_ASYNC_ENABLE |
1443 | #if EV_ASYNC_ENABLE |
1305 | if (async_pending) |
1444 | if (async_pending) |
1306 | { |
1445 | { |
1307 | async_pending = 0; |
1446 | async_pending = 0; |
… | |
… | |
1316 | #endif |
1455 | #endif |
1317 | } |
1456 | } |
1318 | |
1457 | |
1319 | /*****************************************************************************/ |
1458 | /*****************************************************************************/ |
1320 | |
1459 | |
|
|
1460 | void |
|
|
1461 | ev_feed_signal (int signum) |
|
|
1462 | { |
|
|
1463 | #if EV_MULTIPLICITY |
|
|
1464 | EV_P = signals [signum - 1].loop; |
|
|
1465 | |
|
|
1466 | if (!EV_A) |
|
|
1467 | return; |
|
|
1468 | #endif |
|
|
1469 | |
|
|
1470 | evpipe_init (EV_A); |
|
|
1471 | |
|
|
1472 | signals [signum - 1].pending = 1; |
|
|
1473 | evpipe_write (EV_A_ &sig_pending); |
|
|
1474 | } |
|
|
1475 | |
1321 | static void |
1476 | static void |
1322 | ev_sighandler (int signum) |
1477 | ev_sighandler (int signum) |
1323 | { |
1478 | { |
1324 | #if EV_MULTIPLICITY |
|
|
1325 | EV_P = signals [signum - 1].loop; |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | #ifdef _WIN32 |
1479 | #ifdef _WIN32 |
1329 | signal (signum, ev_sighandler); |
1480 | signal (signum, ev_sighandler); |
1330 | #endif |
1481 | #endif |
1331 | |
1482 | |
1332 | signals [signum - 1].pending = 1; |
1483 | ev_feed_signal (signum); |
1333 | evpipe_write (EV_A_ &sig_pending); |
|
|
1334 | } |
1484 | } |
1335 | |
1485 | |
1336 | void noinline |
1486 | void noinline |
1337 | ev_feed_signal_event (EV_P_ int signum) |
1487 | ev_feed_signal_event (EV_P_ int signum) |
1338 | { |
1488 | { |
… | |
… | |
1438 | |
1588 | |
1439 | #endif |
1589 | #endif |
1440 | |
1590 | |
1441 | /*****************************************************************************/ |
1591 | /*****************************************************************************/ |
1442 | |
1592 | |
|
|
1593 | #if EV_USE_IOCP |
|
|
1594 | # include "ev_iocp.c" |
|
|
1595 | #endif |
1443 | #if EV_USE_PORT |
1596 | #if EV_USE_PORT |
1444 | # include "ev_port.c" |
1597 | # include "ev_port.c" |
1445 | #endif |
1598 | #endif |
1446 | #if EV_USE_KQUEUE |
1599 | #if EV_USE_KQUEUE |
1447 | # include "ev_kqueue.c" |
1600 | # include "ev_kqueue.c" |
… | |
… | |
1507 | #ifdef __APPLE__ |
1660 | #ifdef __APPLE__ |
1508 | /* only select works correctly on that "unix-certified" platform */ |
1661 | /* only select works correctly on that "unix-certified" platform */ |
1509 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1662 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1510 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1663 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1511 | #endif |
1664 | #endif |
|
|
1665 | #ifdef __FreeBSD__ |
|
|
1666 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
1667 | #endif |
1512 | |
1668 | |
1513 | return flags; |
1669 | return flags; |
1514 | } |
1670 | } |
1515 | |
1671 | |
1516 | unsigned int |
1672 | unsigned int |
1517 | ev_embeddable_backends (void) |
1673 | ev_embeddable_backends (void) |
1518 | { |
1674 | { |
1519 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1675 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1520 | |
1676 | |
1521 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1677 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1522 | /* please fix it and tell me how to detect the fix */ |
1678 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1523 | flags &= ~EVBACKEND_EPOLL; |
1679 | flags &= ~EVBACKEND_EPOLL; |
1524 | |
1680 | |
1525 | return flags; |
1681 | return flags; |
1526 | } |
1682 | } |
1527 | |
1683 | |
1528 | unsigned int |
1684 | unsigned int |
… | |
… | |
1584 | static void noinline |
1740 | static void noinline |
1585 | loop_init (EV_P_ unsigned int flags) |
1741 | loop_init (EV_P_ unsigned int flags) |
1586 | { |
1742 | { |
1587 | if (!backend) |
1743 | if (!backend) |
1588 | { |
1744 | { |
|
|
1745 | origflags = flags; |
|
|
1746 | |
1589 | #if EV_USE_REALTIME |
1747 | #if EV_USE_REALTIME |
1590 | if (!have_realtime) |
1748 | if (!have_realtime) |
1591 | { |
1749 | { |
1592 | struct timespec ts; |
1750 | struct timespec ts; |
1593 | |
1751 | |
… | |
… | |
1615 | if (!(flags & EVFLAG_NOENV) |
1773 | if (!(flags & EVFLAG_NOENV) |
1616 | && !enable_secure () |
1774 | && !enable_secure () |
1617 | && getenv ("LIBEV_FLAGS")) |
1775 | && getenv ("LIBEV_FLAGS")) |
1618 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1776 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1619 | |
1777 | |
1620 | ev_rt_now = ev_time (); |
1778 | ev_rt_now = ev_time (); |
1621 | mn_now = get_clock (); |
1779 | mn_now = get_clock (); |
1622 | now_floor = mn_now; |
1780 | now_floor = mn_now; |
1623 | rtmn_diff = ev_rt_now - mn_now; |
1781 | rtmn_diff = ev_rt_now - mn_now; |
1624 | #if EV_FEATURE_API |
1782 | #if EV_FEATURE_API |
1625 | invoke_cb = ev_invoke_pending; |
1783 | invoke_cb = ev_invoke_pending; |
1626 | #endif |
1784 | #endif |
1627 | |
1785 | |
1628 | io_blocktime = 0.; |
1786 | io_blocktime = 0.; |
1629 | timeout_blocktime = 0.; |
1787 | timeout_blocktime = 0.; |
1630 | backend = 0; |
1788 | backend = 0; |
1631 | backend_fd = -1; |
1789 | backend_fd = -1; |
1632 | sig_pending = 0; |
1790 | sig_pending = 0; |
1633 | #if EV_ASYNC_ENABLE |
1791 | #if EV_ASYNC_ENABLE |
1634 | async_pending = 0; |
1792 | async_pending = 0; |
1635 | #endif |
1793 | #endif |
|
|
1794 | pipe_write_skipped = 0; |
|
|
1795 | pipe_write_wanted = 0; |
1636 | #if EV_USE_INOTIFY |
1796 | #if EV_USE_INOTIFY |
1637 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1797 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1638 | #endif |
1798 | #endif |
1639 | #if EV_USE_SIGNALFD |
1799 | #if EV_USE_SIGNALFD |
1640 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1800 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1641 | #endif |
1801 | #endif |
1642 | |
1802 | |
1643 | if (!(flags & 0x0000ffffU)) |
1803 | if (!(flags & EVBACKEND_MASK)) |
1644 | flags |= ev_recommended_backends (); |
1804 | flags |= ev_recommended_backends (); |
1645 | |
1805 | |
|
|
1806 | #if EV_USE_IOCP |
|
|
1807 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1808 | #endif |
1646 | #if EV_USE_PORT |
1809 | #if EV_USE_PORT |
1647 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1810 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1648 | #endif |
1811 | #endif |
1649 | #if EV_USE_KQUEUE |
1812 | #if EV_USE_KQUEUE |
1650 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1813 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1667 | #endif |
1830 | #endif |
1668 | } |
1831 | } |
1669 | } |
1832 | } |
1670 | |
1833 | |
1671 | /* free up a loop structure */ |
1834 | /* free up a loop structure */ |
1672 | static void noinline |
1835 | void |
1673 | loop_destroy (EV_P) |
1836 | ev_loop_destroy (EV_P) |
1674 | { |
1837 | { |
1675 | int i; |
1838 | int i; |
|
|
1839 | |
|
|
1840 | #if EV_MULTIPLICITY |
|
|
1841 | /* mimic free (0) */ |
|
|
1842 | if (!EV_A) |
|
|
1843 | return; |
|
|
1844 | #endif |
|
|
1845 | |
|
|
1846 | #if EV_CLEANUP_ENABLE |
|
|
1847 | /* queue cleanup watchers (and execute them) */ |
|
|
1848 | if (expect_false (cleanupcnt)) |
|
|
1849 | { |
|
|
1850 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1851 | EV_INVOKE_PENDING; |
|
|
1852 | } |
|
|
1853 | #endif |
|
|
1854 | |
|
|
1855 | #if EV_CHILD_ENABLE |
|
|
1856 | if (ev_is_active (&childev)) |
|
|
1857 | { |
|
|
1858 | ev_ref (EV_A); /* child watcher */ |
|
|
1859 | ev_signal_stop (EV_A_ &childev); |
|
|
1860 | } |
|
|
1861 | #endif |
1676 | |
1862 | |
1677 | if (ev_is_active (&pipe_w)) |
1863 | if (ev_is_active (&pipe_w)) |
1678 | { |
1864 | { |
1679 | /*ev_ref (EV_A);*/ |
1865 | /*ev_ref (EV_A);*/ |
1680 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1866 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1702 | #endif |
1888 | #endif |
1703 | |
1889 | |
1704 | if (backend_fd >= 0) |
1890 | if (backend_fd >= 0) |
1705 | close (backend_fd); |
1891 | close (backend_fd); |
1706 | |
1892 | |
|
|
1893 | #if EV_USE_IOCP |
|
|
1894 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1895 | #endif |
1707 | #if EV_USE_PORT |
1896 | #if EV_USE_PORT |
1708 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1897 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1709 | #endif |
1898 | #endif |
1710 | #if EV_USE_KQUEUE |
1899 | #if EV_USE_KQUEUE |
1711 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
1900 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1738 | array_free (periodic, EMPTY); |
1927 | array_free (periodic, EMPTY); |
1739 | #endif |
1928 | #endif |
1740 | #if EV_FORK_ENABLE |
1929 | #if EV_FORK_ENABLE |
1741 | array_free (fork, EMPTY); |
1930 | array_free (fork, EMPTY); |
1742 | #endif |
1931 | #endif |
|
|
1932 | #if EV_CLEANUP_ENABLE |
|
|
1933 | array_free (cleanup, EMPTY); |
|
|
1934 | #endif |
1743 | array_free (prepare, EMPTY); |
1935 | array_free (prepare, EMPTY); |
1744 | array_free (check, EMPTY); |
1936 | array_free (check, EMPTY); |
1745 | #if EV_ASYNC_ENABLE |
1937 | #if EV_ASYNC_ENABLE |
1746 | array_free (async, EMPTY); |
1938 | array_free (async, EMPTY); |
1747 | #endif |
1939 | #endif |
1748 | |
1940 | |
1749 | backend = 0; |
1941 | backend = 0; |
|
|
1942 | |
|
|
1943 | #if EV_MULTIPLICITY |
|
|
1944 | if (ev_is_default_loop (EV_A)) |
|
|
1945 | #endif |
|
|
1946 | ev_default_loop_ptr = 0; |
|
|
1947 | #if EV_MULTIPLICITY |
|
|
1948 | else |
|
|
1949 | ev_free (EV_A); |
|
|
1950 | #endif |
1750 | } |
1951 | } |
1751 | |
1952 | |
1752 | #if EV_USE_INOTIFY |
1953 | #if EV_USE_INOTIFY |
1753 | inline_size void infy_fork (EV_P); |
1954 | inline_size void infy_fork (EV_P); |
1754 | #endif |
1955 | #endif |
… | |
… | |
1769 | infy_fork (EV_A); |
1970 | infy_fork (EV_A); |
1770 | #endif |
1971 | #endif |
1771 | |
1972 | |
1772 | if (ev_is_active (&pipe_w)) |
1973 | if (ev_is_active (&pipe_w)) |
1773 | { |
1974 | { |
1774 | /* this "locks" the handlers against writing to the pipe */ |
1975 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1775 | /* while we modify the fd vars */ |
|
|
1776 | sig_pending = 1; |
|
|
1777 | #if EV_ASYNC_ENABLE |
|
|
1778 | async_pending = 1; |
|
|
1779 | #endif |
|
|
1780 | |
1976 | |
1781 | ev_ref (EV_A); |
1977 | ev_ref (EV_A); |
1782 | ev_io_stop (EV_A_ &pipe_w); |
1978 | ev_io_stop (EV_A_ &pipe_w); |
1783 | |
1979 | |
1784 | #if EV_USE_EVENTFD |
1980 | #if EV_USE_EVENTFD |
… | |
… | |
1813 | loop_init (EV_A_ flags); |
2009 | loop_init (EV_A_ flags); |
1814 | |
2010 | |
1815 | if (ev_backend (EV_A)) |
2011 | if (ev_backend (EV_A)) |
1816 | return EV_A; |
2012 | return EV_A; |
1817 | |
2013 | |
|
|
2014 | ev_free (EV_A); |
1818 | return 0; |
2015 | return 0; |
1819 | } |
2016 | } |
1820 | |
2017 | |
1821 | void |
|
|
1822 | ev_loop_destroy (EV_P) |
|
|
1823 | { |
|
|
1824 | loop_destroy (EV_A); |
|
|
1825 | ev_free (loop); |
|
|
1826 | } |
|
|
1827 | |
|
|
1828 | void |
|
|
1829 | ev_loop_fork (EV_P) |
|
|
1830 | { |
|
|
1831 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1832 | } |
|
|
1833 | #endif /* multiplicity */ |
2018 | #endif /* multiplicity */ |
1834 | |
2019 | |
1835 | #if EV_VERIFY |
2020 | #if EV_VERIFY |
1836 | static void noinline |
2021 | static void noinline |
1837 | verify_watcher (EV_P_ W w) |
2022 | verify_watcher (EV_P_ W w) |
… | |
… | |
1912 | #if EV_FORK_ENABLE |
2097 | #if EV_FORK_ENABLE |
1913 | assert (forkmax >= forkcnt); |
2098 | assert (forkmax >= forkcnt); |
1914 | array_verify (EV_A_ (W *)forks, forkcnt); |
2099 | array_verify (EV_A_ (W *)forks, forkcnt); |
1915 | #endif |
2100 | #endif |
1916 | |
2101 | |
|
|
2102 | #if EV_CLEANUP_ENABLE |
|
|
2103 | assert (cleanupmax >= cleanupcnt); |
|
|
2104 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2105 | #endif |
|
|
2106 | |
1917 | #if EV_ASYNC_ENABLE |
2107 | #if EV_ASYNC_ENABLE |
1918 | assert (asyncmax >= asynccnt); |
2108 | assert (asyncmax >= asynccnt); |
1919 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2109 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1920 | #endif |
2110 | #endif |
1921 | |
2111 | |
… | |
… | |
1939 | } |
2129 | } |
1940 | #endif |
2130 | #endif |
1941 | |
2131 | |
1942 | #if EV_MULTIPLICITY |
2132 | #if EV_MULTIPLICITY |
1943 | struct ev_loop * |
2133 | struct ev_loop * |
1944 | ev_default_loop_init (unsigned int flags) |
|
|
1945 | #else |
2134 | #else |
1946 | int |
2135 | int |
|
|
2136 | #endif |
1947 | ev_default_loop (unsigned int flags) |
2137 | ev_default_loop (unsigned int flags) |
1948 | #endif |
|
|
1949 | { |
2138 | { |
1950 | if (!ev_default_loop_ptr) |
2139 | if (!ev_default_loop_ptr) |
1951 | { |
2140 | { |
1952 | #if EV_MULTIPLICITY |
2141 | #if EV_MULTIPLICITY |
1953 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2142 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1972 | |
2161 | |
1973 | return ev_default_loop_ptr; |
2162 | return ev_default_loop_ptr; |
1974 | } |
2163 | } |
1975 | |
2164 | |
1976 | void |
2165 | void |
1977 | ev_default_destroy (void) |
2166 | ev_loop_fork (EV_P) |
1978 | { |
2167 | { |
1979 | #if EV_MULTIPLICITY |
|
|
1980 | EV_P = ev_default_loop_ptr; |
|
|
1981 | #endif |
|
|
1982 | |
|
|
1983 | ev_default_loop_ptr = 0; |
|
|
1984 | |
|
|
1985 | #if EV_CHILD_ENABLE |
|
|
1986 | ev_ref (EV_A); /* child watcher */ |
|
|
1987 | ev_signal_stop (EV_A_ &childev); |
|
|
1988 | #endif |
|
|
1989 | |
|
|
1990 | loop_destroy (EV_A); |
|
|
1991 | } |
|
|
1992 | |
|
|
1993 | void |
|
|
1994 | ev_default_fork (void) |
|
|
1995 | { |
|
|
1996 | #if EV_MULTIPLICITY |
|
|
1997 | EV_P = ev_default_loop_ptr; |
|
|
1998 | #endif |
|
|
1999 | |
|
|
2000 | postfork = 1; /* must be in line with ev_loop_fork */ |
2168 | postfork = 1; /* must be in line with ev_default_fork */ |
2001 | } |
2169 | } |
2002 | |
2170 | |
2003 | /*****************************************************************************/ |
2171 | /*****************************************************************************/ |
2004 | |
2172 | |
2005 | void |
2173 | void |
… | |
… | |
2027 | |
2195 | |
2028 | for (pri = NUMPRI; pri--; ) |
2196 | for (pri = NUMPRI; pri--; ) |
2029 | while (pendingcnt [pri]) |
2197 | while (pendingcnt [pri]) |
2030 | { |
2198 | { |
2031 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2199 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2032 | |
|
|
2033 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2034 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2035 | |
2200 | |
2036 | p->w->pending = 0; |
2201 | p->w->pending = 0; |
2037 | EV_CB_INVOKE (p->w, p->events); |
2202 | EV_CB_INVOKE (p->w, p->events); |
2038 | EV_FREQUENT_CHECK; |
2203 | EV_FREQUENT_CHECK; |
2039 | } |
2204 | } |
… | |
… | |
2096 | EV_FREQUENT_CHECK; |
2261 | EV_FREQUENT_CHECK; |
2097 | feed_reverse (EV_A_ (W)w); |
2262 | feed_reverse (EV_A_ (W)w); |
2098 | } |
2263 | } |
2099 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2264 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2100 | |
2265 | |
2101 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
2266 | feed_reverse_done (EV_A_ EV_TIMER); |
2102 | } |
2267 | } |
2103 | } |
2268 | } |
2104 | |
2269 | |
2105 | #if EV_PERIODIC_ENABLE |
2270 | #if EV_PERIODIC_ENABLE |
|
|
2271 | |
|
|
2272 | static void noinline |
|
|
2273 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2274 | { |
|
|
2275 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2276 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2277 | |
|
|
2278 | /* the above almost always errs on the low side */ |
|
|
2279 | while (at <= ev_rt_now) |
|
|
2280 | { |
|
|
2281 | ev_tstamp nat = at + w->interval; |
|
|
2282 | |
|
|
2283 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2284 | if (expect_false (nat == at)) |
|
|
2285 | { |
|
|
2286 | at = ev_rt_now; |
|
|
2287 | break; |
|
|
2288 | } |
|
|
2289 | |
|
|
2290 | at = nat; |
|
|
2291 | } |
|
|
2292 | |
|
|
2293 | ev_at (w) = at; |
|
|
2294 | } |
|
|
2295 | |
2106 | /* make periodics pending */ |
2296 | /* make periodics pending */ |
2107 | inline_size void |
2297 | inline_size void |
2108 | periodics_reify (EV_P) |
2298 | periodics_reify (EV_P) |
2109 | { |
2299 | { |
2110 | EV_FREQUENT_CHECK; |
2300 | EV_FREQUENT_CHECK; |
… | |
… | |
2129 | ANHE_at_cache (periodics [HEAP0]); |
2319 | ANHE_at_cache (periodics [HEAP0]); |
2130 | downheap (periodics, periodiccnt, HEAP0); |
2320 | downheap (periodics, periodiccnt, HEAP0); |
2131 | } |
2321 | } |
2132 | else if (w->interval) |
2322 | else if (w->interval) |
2133 | { |
2323 | { |
2134 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2324 | periodic_recalc (EV_A_ w); |
2135 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2136 | /* this might happen because of floating point inexactness */ |
|
|
2137 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2138 | { |
|
|
2139 | ev_at (w) += w->interval; |
|
|
2140 | |
|
|
2141 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2142 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2143 | /* has effectively asked to get triggered more often than possible */ |
|
|
2144 | if (ev_at (w) < ev_rt_now) |
|
|
2145 | ev_at (w) = ev_rt_now; |
|
|
2146 | } |
|
|
2147 | |
|
|
2148 | ANHE_at_cache (periodics [HEAP0]); |
2325 | ANHE_at_cache (periodics [HEAP0]); |
2149 | downheap (periodics, periodiccnt, HEAP0); |
2326 | downheap (periodics, periodiccnt, HEAP0); |
2150 | } |
2327 | } |
2151 | else |
2328 | else |
2152 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2329 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2159 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2336 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2160 | } |
2337 | } |
2161 | } |
2338 | } |
2162 | |
2339 | |
2163 | /* simply recalculate all periodics */ |
2340 | /* simply recalculate all periodics */ |
2164 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
2341 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2165 | static void noinline |
2342 | static void noinline |
2166 | periodics_reschedule (EV_P) |
2343 | periodics_reschedule (EV_P) |
2167 | { |
2344 | { |
2168 | int i; |
2345 | int i; |
2169 | |
2346 | |
… | |
… | |
2173 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2350 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2174 | |
2351 | |
2175 | if (w->reschedule_cb) |
2352 | if (w->reschedule_cb) |
2176 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2353 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2177 | else if (w->interval) |
2354 | else if (w->interval) |
2178 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2355 | periodic_recalc (EV_A_ w); |
2179 | |
2356 | |
2180 | ANHE_at_cache (periodics [i]); |
2357 | ANHE_at_cache (periodics [i]); |
2181 | } |
2358 | } |
2182 | |
2359 | |
2183 | reheap (periodics, periodiccnt); |
2360 | reheap (periodics, periodiccnt); |
… | |
… | |
2230 | * doesn't hurt either as we only do this on time-jumps or |
2407 | * doesn't hurt either as we only do this on time-jumps or |
2231 | * in the unlikely event of having been preempted here. |
2408 | * in the unlikely event of having been preempted here. |
2232 | */ |
2409 | */ |
2233 | for (i = 4; --i; ) |
2410 | for (i = 4; --i; ) |
2234 | { |
2411 | { |
|
|
2412 | ev_tstamp diff; |
2235 | rtmn_diff = ev_rt_now - mn_now; |
2413 | rtmn_diff = ev_rt_now - mn_now; |
2236 | |
2414 | |
|
|
2415 | diff = odiff - rtmn_diff; |
|
|
2416 | |
2237 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2417 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2238 | return; /* all is well */ |
2418 | return; /* all is well */ |
2239 | |
2419 | |
2240 | ev_rt_now = ev_time (); |
2420 | ev_rt_now = ev_time (); |
2241 | mn_now = get_clock (); |
2421 | mn_now = get_clock (); |
2242 | now_floor = mn_now; |
2422 | now_floor = mn_now; |
… | |
… | |
2265 | mn_now = ev_rt_now; |
2445 | mn_now = ev_rt_now; |
2266 | } |
2446 | } |
2267 | } |
2447 | } |
2268 | |
2448 | |
2269 | void |
2449 | void |
2270 | ev_loop (EV_P_ int flags) |
2450 | ev_run (EV_P_ int flags) |
2271 | { |
2451 | { |
2272 | #if EV_FEATURE_API |
2452 | #if EV_FEATURE_API |
2273 | ++loop_depth; |
2453 | ++loop_depth; |
2274 | #endif |
2454 | #endif |
2275 | |
2455 | |
2276 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2456 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2277 | |
2457 | |
2278 | loop_done = EVUNLOOP_CANCEL; |
2458 | loop_done = EVBREAK_CANCEL; |
2279 | |
2459 | |
2280 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2460 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2281 | |
2461 | |
2282 | do |
2462 | do |
2283 | { |
2463 | { |
… | |
… | |
2326 | /* calculate blocking time */ |
2506 | /* calculate blocking time */ |
2327 | { |
2507 | { |
2328 | ev_tstamp waittime = 0.; |
2508 | ev_tstamp waittime = 0.; |
2329 | ev_tstamp sleeptime = 0.; |
2509 | ev_tstamp sleeptime = 0.; |
2330 | |
2510 | |
|
|
2511 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2512 | ev_tstamp prev_mn_now = mn_now; |
|
|
2513 | |
|
|
2514 | /* update time to cancel out callback processing overhead */ |
|
|
2515 | time_update (EV_A_ 1e100); |
|
|
2516 | |
|
|
2517 | /* from now on, we want a pipe-wake-up */ |
|
|
2518 | pipe_write_wanted = 1; |
|
|
2519 | |
2331 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
2520 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2332 | { |
2521 | { |
2333 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2334 | ev_tstamp prev_mn_now = mn_now; |
|
|
2335 | |
|
|
2336 | /* update time to cancel out callback processing overhead */ |
|
|
2337 | time_update (EV_A_ 1e100); |
|
|
2338 | |
|
|
2339 | waittime = MAX_BLOCKTIME; |
2522 | waittime = MAX_BLOCKTIME; |
2340 | |
2523 | |
2341 | if (timercnt) |
2524 | if (timercnt) |
2342 | { |
2525 | { |
2343 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2526 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2344 | if (waittime > to) waittime = to; |
2527 | if (waittime > to) waittime = to; |
2345 | } |
2528 | } |
2346 | |
2529 | |
2347 | #if EV_PERIODIC_ENABLE |
2530 | #if EV_PERIODIC_ENABLE |
2348 | if (periodiccnt) |
2531 | if (periodiccnt) |
2349 | { |
2532 | { |
2350 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2533 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2351 | if (waittime > to) waittime = to; |
2534 | if (waittime > to) waittime = to; |
2352 | } |
2535 | } |
2353 | #endif |
2536 | #endif |
2354 | |
2537 | |
2355 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2538 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2356 | if (expect_false (waittime < timeout_blocktime)) |
2539 | if (expect_false (waittime < timeout_blocktime)) |
2357 | waittime = timeout_blocktime; |
2540 | waittime = timeout_blocktime; |
|
|
2541 | |
|
|
2542 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2543 | /* to pass a minimum nonzero value to the backend */ |
|
|
2544 | if (expect_false (waittime < backend_mintime)) |
|
|
2545 | waittime = backend_mintime; |
2358 | |
2546 | |
2359 | /* extra check because io_blocktime is commonly 0 */ |
2547 | /* extra check because io_blocktime is commonly 0 */ |
2360 | if (expect_false (io_blocktime)) |
2548 | if (expect_false (io_blocktime)) |
2361 | { |
2549 | { |
2362 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2550 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2363 | |
2551 | |
2364 | if (sleeptime > waittime - backend_fudge) |
2552 | if (sleeptime > waittime - backend_mintime) |
2365 | sleeptime = waittime - backend_fudge; |
2553 | sleeptime = waittime - backend_mintime; |
2366 | |
2554 | |
2367 | if (expect_true (sleeptime > 0.)) |
2555 | if (expect_true (sleeptime > 0.)) |
2368 | { |
2556 | { |
2369 | ev_sleep (sleeptime); |
2557 | ev_sleep (sleeptime); |
2370 | waittime -= sleeptime; |
2558 | waittime -= sleeptime; |
… | |
… | |
2373 | } |
2561 | } |
2374 | |
2562 | |
2375 | #if EV_FEATURE_API |
2563 | #if EV_FEATURE_API |
2376 | ++loop_count; |
2564 | ++loop_count; |
2377 | #endif |
2565 | #endif |
2378 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2566 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2379 | backend_poll (EV_A_ waittime); |
2567 | backend_poll (EV_A_ waittime); |
2380 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2568 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2569 | |
|
|
2570 | pipe_write_wanted = 0; |
|
|
2571 | |
|
|
2572 | if (pipe_write_skipped) |
|
|
2573 | { |
|
|
2574 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2575 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2576 | } |
|
|
2577 | |
2381 | |
2578 | |
2382 | /* update ev_rt_now, do magic */ |
2579 | /* update ev_rt_now, do magic */ |
2383 | time_update (EV_A_ waittime + sleeptime); |
2580 | time_update (EV_A_ waittime + sleeptime); |
2384 | } |
2581 | } |
2385 | |
2582 | |
… | |
… | |
2403 | EV_INVOKE_PENDING; |
2600 | EV_INVOKE_PENDING; |
2404 | } |
2601 | } |
2405 | while (expect_true ( |
2602 | while (expect_true ( |
2406 | activecnt |
2603 | activecnt |
2407 | && !loop_done |
2604 | && !loop_done |
2408 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2605 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2409 | )); |
2606 | )); |
2410 | |
2607 | |
2411 | if (loop_done == EVUNLOOP_ONE) |
2608 | if (loop_done == EVBREAK_ONE) |
2412 | loop_done = EVUNLOOP_CANCEL; |
2609 | loop_done = EVBREAK_CANCEL; |
2413 | |
2610 | |
2414 | #if EV_FEATURE_API |
2611 | #if EV_FEATURE_API |
2415 | --loop_depth; |
2612 | --loop_depth; |
2416 | #endif |
2613 | #endif |
2417 | } |
2614 | } |
2418 | |
2615 | |
2419 | void |
2616 | void |
2420 | ev_unloop (EV_P_ int how) |
2617 | ev_break (EV_P_ int how) |
2421 | { |
2618 | { |
2422 | loop_done = how; |
2619 | loop_done = how; |
2423 | } |
2620 | } |
2424 | |
2621 | |
2425 | void |
2622 | void |
… | |
… | |
2573 | EV_FREQUENT_CHECK; |
2770 | EV_FREQUENT_CHECK; |
2574 | |
2771 | |
2575 | wlist_del (&anfds[w->fd].head, (WL)w); |
2772 | wlist_del (&anfds[w->fd].head, (WL)w); |
2576 | ev_stop (EV_A_ (W)w); |
2773 | ev_stop (EV_A_ (W)w); |
2577 | |
2774 | |
2578 | fd_change (EV_A_ w->fd, 1); |
2775 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2579 | |
2776 | |
2580 | EV_FREQUENT_CHECK; |
2777 | EV_FREQUENT_CHECK; |
2581 | } |
2778 | } |
2582 | |
2779 | |
2583 | void noinline |
2780 | void noinline |
… | |
… | |
2675 | if (w->reschedule_cb) |
2872 | if (w->reschedule_cb) |
2676 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2873 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2677 | else if (w->interval) |
2874 | else if (w->interval) |
2678 | { |
2875 | { |
2679 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2876 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2680 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2877 | periodic_recalc (EV_A_ w); |
2681 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2682 | } |
2878 | } |
2683 | else |
2879 | else |
2684 | ev_at (w) = w->offset; |
2880 | ev_at (w) = w->offset; |
2685 | |
2881 | |
2686 | EV_FREQUENT_CHECK; |
2882 | EV_FREQUENT_CHECK; |
… | |
… | |
2807 | sa.sa_handler = ev_sighandler; |
3003 | sa.sa_handler = ev_sighandler; |
2808 | sigfillset (&sa.sa_mask); |
3004 | sigfillset (&sa.sa_mask); |
2809 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3005 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2810 | sigaction (w->signum, &sa, 0); |
3006 | sigaction (w->signum, &sa, 0); |
2811 | |
3007 | |
|
|
3008 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3009 | { |
2812 | sigemptyset (&sa.sa_mask); |
3010 | sigemptyset (&sa.sa_mask); |
2813 | sigaddset (&sa.sa_mask, w->signum); |
3011 | sigaddset (&sa.sa_mask, w->signum); |
2814 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3012 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3013 | } |
2815 | #endif |
3014 | #endif |
2816 | } |
3015 | } |
2817 | |
3016 | |
2818 | EV_FREQUENT_CHECK; |
3017 | EV_FREQUENT_CHECK; |
2819 | } |
3018 | } |
… | |
… | |
2960 | if (!pend || pend == path) |
3159 | if (!pend || pend == path) |
2961 | break; |
3160 | break; |
2962 | |
3161 | |
2963 | *pend = 0; |
3162 | *pend = 0; |
2964 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3163 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2965 | } |
3164 | } |
2966 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3165 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2967 | } |
3166 | } |
2968 | } |
3167 | } |
2969 | |
3168 | |
2970 | if (w->wd >= 0) |
3169 | if (w->wd >= 0) |
… | |
… | |
3035 | { |
3234 | { |
3036 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3235 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3037 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3236 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3038 | ofs += sizeof (struct inotify_event) + ev->len; |
3237 | ofs += sizeof (struct inotify_event) + ev->len; |
3039 | } |
3238 | } |
3040 | } |
|
|
3041 | |
|
|
3042 | inline_size unsigned int |
|
|
3043 | ev_linux_version (void) |
|
|
3044 | { |
|
|
3045 | struct utsname buf; |
|
|
3046 | unsigned int v; |
|
|
3047 | int i; |
|
|
3048 | char *p = buf.release; |
|
|
3049 | |
|
|
3050 | if (uname (&buf)) |
|
|
3051 | return 0; |
|
|
3052 | |
|
|
3053 | for (i = 3+1; --i; ) |
|
|
3054 | { |
|
|
3055 | unsigned int c = 0; |
|
|
3056 | |
|
|
3057 | for (;;) |
|
|
3058 | { |
|
|
3059 | if (*p >= '0' && *p <= '9') |
|
|
3060 | c = c * 10 + *p++ - '0'; |
|
|
3061 | else |
|
|
3062 | { |
|
|
3063 | p += *p == '.'; |
|
|
3064 | break; |
|
|
3065 | } |
|
|
3066 | } |
|
|
3067 | |
|
|
3068 | v = (v << 8) | c; |
|
|
3069 | } |
|
|
3070 | |
|
|
3071 | return v; |
|
|
3072 | } |
3239 | } |
3073 | |
3240 | |
3074 | inline_size void |
3241 | inline_size void |
3075 | ev_check_2625 (EV_P) |
3242 | ev_check_2625 (EV_P) |
3076 | { |
3243 | { |
… | |
… | |
3400 | |
3567 | |
3401 | #if EV_EMBED_ENABLE |
3568 | #if EV_EMBED_ENABLE |
3402 | void noinline |
3569 | void noinline |
3403 | ev_embed_sweep (EV_P_ ev_embed *w) |
3570 | ev_embed_sweep (EV_P_ ev_embed *w) |
3404 | { |
3571 | { |
3405 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3572 | ev_run (w->other, EVRUN_NOWAIT); |
3406 | } |
3573 | } |
3407 | |
3574 | |
3408 | static void |
3575 | static void |
3409 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3576 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3410 | { |
3577 | { |
3411 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3578 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3412 | |
3579 | |
3413 | if (ev_cb (w)) |
3580 | if (ev_cb (w)) |
3414 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3581 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3415 | else |
3582 | else |
3416 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3583 | ev_run (w->other, EVRUN_NOWAIT); |
3417 | } |
3584 | } |
3418 | |
3585 | |
3419 | static void |
3586 | static void |
3420 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3587 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3421 | { |
3588 | { |
… | |
… | |
3425 | EV_P = w->other; |
3592 | EV_P = w->other; |
3426 | |
3593 | |
3427 | while (fdchangecnt) |
3594 | while (fdchangecnt) |
3428 | { |
3595 | { |
3429 | fd_reify (EV_A); |
3596 | fd_reify (EV_A); |
3430 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3597 | ev_run (EV_A_ EVRUN_NOWAIT); |
3431 | } |
3598 | } |
3432 | } |
3599 | } |
3433 | } |
3600 | } |
3434 | |
3601 | |
3435 | static void |
3602 | static void |
… | |
… | |
3441 | |
3608 | |
3442 | { |
3609 | { |
3443 | EV_P = w->other; |
3610 | EV_P = w->other; |
3444 | |
3611 | |
3445 | ev_loop_fork (EV_A); |
3612 | ev_loop_fork (EV_A); |
3446 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3613 | ev_run (EV_A_ EVRUN_NOWAIT); |
3447 | } |
3614 | } |
3448 | |
3615 | |
3449 | ev_embed_start (EV_A_ w); |
3616 | ev_embed_start (EV_A_ w); |
3450 | } |
3617 | } |
3451 | |
3618 | |
… | |
… | |
3543 | |
3710 | |
3544 | EV_FREQUENT_CHECK; |
3711 | EV_FREQUENT_CHECK; |
3545 | } |
3712 | } |
3546 | #endif |
3713 | #endif |
3547 | |
3714 | |
3548 | #if EV_ASYNC_ENABLE |
3715 | #if EV_CLEANUP_ENABLE |
3549 | void |
3716 | void |
3550 | ev_async_start (EV_P_ ev_async *w) |
3717 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
3551 | { |
3718 | { |
3552 | if (expect_false (ev_is_active (w))) |
3719 | if (expect_false (ev_is_active (w))) |
3553 | return; |
3720 | return; |
|
|
3721 | |
|
|
3722 | EV_FREQUENT_CHECK; |
|
|
3723 | |
|
|
3724 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3725 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3726 | cleanups [cleanupcnt - 1] = w; |
|
|
3727 | |
|
|
3728 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3729 | ev_unref (EV_A); |
|
|
3730 | EV_FREQUENT_CHECK; |
|
|
3731 | } |
|
|
3732 | |
|
|
3733 | void |
|
|
3734 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3735 | { |
|
|
3736 | clear_pending (EV_A_ (W)w); |
|
|
3737 | if (expect_false (!ev_is_active (w))) |
|
|
3738 | return; |
|
|
3739 | |
|
|
3740 | EV_FREQUENT_CHECK; |
|
|
3741 | ev_ref (EV_A); |
|
|
3742 | |
|
|
3743 | { |
|
|
3744 | int active = ev_active (w); |
|
|
3745 | |
|
|
3746 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3747 | ev_active (cleanups [active - 1]) = active; |
|
|
3748 | } |
|
|
3749 | |
|
|
3750 | ev_stop (EV_A_ (W)w); |
|
|
3751 | |
|
|
3752 | EV_FREQUENT_CHECK; |
|
|
3753 | } |
|
|
3754 | #endif |
|
|
3755 | |
|
|
3756 | #if EV_ASYNC_ENABLE |
|
|
3757 | void |
|
|
3758 | ev_async_start (EV_P_ ev_async *w) |
|
|
3759 | { |
|
|
3760 | if (expect_false (ev_is_active (w))) |
|
|
3761 | return; |
|
|
3762 | |
|
|
3763 | w->sent = 0; |
3554 | |
3764 | |
3555 | evpipe_init (EV_A); |
3765 | evpipe_init (EV_A); |
3556 | |
3766 | |
3557 | EV_FREQUENT_CHECK; |
3767 | EV_FREQUENT_CHECK; |
3558 | |
3768 | |
… | |
… | |
3636 | { |
3846 | { |
3637 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3847 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3638 | |
3848 | |
3639 | if (expect_false (!once)) |
3849 | if (expect_false (!once)) |
3640 | { |
3850 | { |
3641 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3851 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
3642 | return; |
3852 | return; |
3643 | } |
3853 | } |
3644 | |
3854 | |
3645 | once->cb = cb; |
3855 | once->cb = cb; |
3646 | once->arg = arg; |
3856 | once->arg = arg; |
… | |
… | |
3778 | |
3988 | |
3779 | #if EV_MULTIPLICITY |
3989 | #if EV_MULTIPLICITY |
3780 | #include "ev_wrap.h" |
3990 | #include "ev_wrap.h" |
3781 | #endif |
3991 | #endif |
3782 | |
3992 | |
3783 | #ifdef __cplusplus |
3993 | EV_CPP(}) |
3784 | } |
|
|
3785 | #endif |
|
|
3786 | |
3994 | |