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 |
|
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203 | |
|
|
204 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
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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 | } |
|
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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 |
|
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422 | extern "C" { |
|
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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 |
|
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432 | } |
|
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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. |
|
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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) */ |
457 | |
465 | |
458 | #if __GNUC__ >= 4 |
466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
459 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
460 | # define noinline __attribute__ ((noinline)) |
468 | |
|
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469 | /* the following are taken from libecb */ |
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470 | /* ecb.h start */ |
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471 | |
|
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472 | /* many compilers define _GNUC_ to some versions but then only implement |
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473 | * what their idiot authors think are the "more important" extensions, |
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474 | * causing enourmous grief in return for some better fake benchmark numbers. |
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475 | * or so. |
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476 | * we try to detect these and simply assume they are not gcc - if they have |
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477 | * an issue with that they should have done it right in the first place. |
|
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478 | */ |
|
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479 | #ifndef ECB_GCC_VERSION |
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480 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
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481 | #define ECB_GCC_VERSION(major,minor) 0 |
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482 | #else |
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483 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
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484 | #endif |
|
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485 | #endif |
|
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486 | |
|
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487 | #if __cplusplus |
|
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488 | #define ecb_inline static inline |
|
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489 | #elif ECB_GCC_VERSION(2,5) |
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490 | #define ecb_inline static __inline__ |
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491 | #elif ECB_C99 |
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492 | #define ecb_inline static inline |
461 | #else |
493 | #else |
462 | # define expect(expr,value) (expr) |
494 | #define ecb_inline static |
463 | # define noinline |
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464 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
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465 | # define inline |
|
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466 | # endif |
495 | #endif |
|
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496 | |
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497 | #ifndef ECB_MEMORY_FENCE |
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498 | #if ECB_GCC_VERSION(2,5) |
|
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499 | #if __x86 |
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500 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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501 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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502 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ |
|
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503 | #elif __amd64 |
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504 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
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505 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
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506 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") |
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507 | #endif |
467 | #endif |
508 | #endif |
|
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509 | #endif |
468 | |
510 | |
|
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511 | #ifndef ECB_MEMORY_FENCE |
|
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512 | #if ECB_GCC_VERSION(4,4) |
|
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513 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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514 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
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515 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
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516 | #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */ |
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517 | #define ECB_MEMORY_FENCE do { } while (0) |
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518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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520 | #elif defined(_WIN32) |
|
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521 | #include <WinNT.h> |
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522 | #define ECB_MEMORY_FENCE MemoryBarrier () |
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523 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
524 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
525 | #endif |
|
|
526 | #endif |
|
|
527 | |
|
|
528 | #ifndef ECB_MEMORY_FENCE |
|
|
529 | #include <pthread.h> |
|
|
530 | |
|
|
531 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
532 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
533 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
534 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
535 | #endif |
|
|
536 | |
|
|
537 | #if ECB_GCC_VERSION(3,1) |
|
|
538 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
539 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
540 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
541 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
542 | #else |
|
|
543 | #define ecb_attribute(attrlist) |
|
|
544 | #define ecb_is_constant(expr) 0 |
|
|
545 | #define ecb_expect(expr,value) (expr) |
|
|
546 | #define ecb_prefetch(addr,rw,locality) |
|
|
547 | #endif |
|
|
548 | |
|
|
549 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
550 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
551 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
552 | #define ecb_const ecb_attribute ((__const__)) |
|
|
553 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
554 | |
|
|
555 | #if ECB_GCC_VERSION(4,3) |
|
|
556 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
557 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
558 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
559 | #else |
|
|
560 | #define ecb_artificial |
|
|
561 | #define ecb_hot |
|
|
562 | #define ecb_cold |
|
|
563 | #endif |
|
|
564 | |
|
|
565 | /* put around conditional expressions if you are very sure that the */ |
|
|
566 | /* expression is mostly true or mostly false. note that these return */ |
|
|
567 | /* booleans, not the expression. */ |
469 | #define expect_false(expr) expect ((expr) != 0, 0) |
568 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
470 | #define expect_true(expr) expect ((expr) != 0, 1) |
569 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
570 | /* ecb.h end */ |
|
|
571 | |
|
|
572 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
573 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
574 | #define noinline ecb_noinline |
|
|
575 | |
471 | #define inline_size static inline |
576 | #define inline_size ecb_inline |
472 | |
577 | |
473 | #if EV_FEATURE_CODE |
578 | #if EV_FEATURE_CODE |
474 | # define inline_speed static inline |
579 | # define inline_speed ecb_inline |
475 | #else |
580 | #else |
476 | # define inline_speed static noinline |
581 | # define inline_speed static noinline |
477 | #endif |
582 | #endif |
478 | |
583 | |
479 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
584 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
494 | #define ev_active(w) ((W)(w))->active |
599 | #define ev_active(w) ((W)(w))->active |
495 | #define ev_at(w) ((WT)(w))->at |
600 | #define ev_at(w) ((WT)(w))->at |
496 | |
601 | |
497 | #if EV_USE_REALTIME |
602 | #if EV_USE_REALTIME |
498 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
603 | /* 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 */ |
604 | /* giving it a reasonably high chance of working on typical architectures */ |
500 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
605 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
501 | #endif |
606 | #endif |
502 | |
607 | |
503 | #if EV_USE_MONOTONIC |
608 | #if EV_USE_MONOTONIC |
504 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
609 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
… | |
… | |
518 | # include "ev_win32.c" |
623 | # include "ev_win32.c" |
519 | #endif |
624 | #endif |
520 | |
625 | |
521 | /*****************************************************************************/ |
626 | /*****************************************************************************/ |
522 | |
627 | |
|
|
628 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
629 | |
|
|
630 | #if EV_USE_FLOOR |
|
|
631 | # include <math.h> |
|
|
632 | # define ev_floor(v) floor (v) |
|
|
633 | #else |
|
|
634 | |
|
|
635 | #include <float.h> |
|
|
636 | |
|
|
637 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
638 | static ev_tstamp noinline |
|
|
639 | ev_floor (ev_tstamp v) |
|
|
640 | { |
|
|
641 | /* the choice of shift factor is not terribly important */ |
|
|
642 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
643 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
644 | #else |
|
|
645 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
646 | #endif |
|
|
647 | |
|
|
648 | /* argument too large for an unsigned long? */ |
|
|
649 | if (expect_false (v >= shift)) |
|
|
650 | { |
|
|
651 | ev_tstamp f; |
|
|
652 | |
|
|
653 | if (v == v - 1.) |
|
|
654 | return v; /* very large number */ |
|
|
655 | |
|
|
656 | f = shift * ev_floor (v * (1. / shift)); |
|
|
657 | return f + ev_floor (v - f); |
|
|
658 | } |
|
|
659 | |
|
|
660 | /* special treatment for negative args? */ |
|
|
661 | if (expect_false (v < 0.)) |
|
|
662 | { |
|
|
663 | ev_tstamp f = -ev_floor (-v); |
|
|
664 | |
|
|
665 | return f - (f == v ? 0 : 1); |
|
|
666 | } |
|
|
667 | |
|
|
668 | /* fits into an unsigned long */ |
|
|
669 | return (unsigned long)v; |
|
|
670 | } |
|
|
671 | |
|
|
672 | #endif |
|
|
673 | |
|
|
674 | /*****************************************************************************/ |
|
|
675 | |
|
|
676 | #ifdef __linux |
|
|
677 | # include <sys/utsname.h> |
|
|
678 | #endif |
|
|
679 | |
|
|
680 | static unsigned int noinline ecb_cold |
|
|
681 | ev_linux_version (void) |
|
|
682 | { |
|
|
683 | #ifdef __linux |
|
|
684 | unsigned int v = 0; |
|
|
685 | struct utsname buf; |
|
|
686 | int i; |
|
|
687 | char *p = buf.release; |
|
|
688 | |
|
|
689 | if (uname (&buf)) |
|
|
690 | return 0; |
|
|
691 | |
|
|
692 | for (i = 3+1; --i; ) |
|
|
693 | { |
|
|
694 | unsigned int c = 0; |
|
|
695 | |
|
|
696 | for (;;) |
|
|
697 | { |
|
|
698 | if (*p >= '0' && *p <= '9') |
|
|
699 | c = c * 10 + *p++ - '0'; |
|
|
700 | else |
|
|
701 | { |
|
|
702 | p += *p == '.'; |
|
|
703 | break; |
|
|
704 | } |
|
|
705 | } |
|
|
706 | |
|
|
707 | v = (v << 8) | c; |
|
|
708 | } |
|
|
709 | |
|
|
710 | return v; |
|
|
711 | #else |
|
|
712 | return 0; |
|
|
713 | #endif |
|
|
714 | } |
|
|
715 | |
|
|
716 | /*****************************************************************************/ |
|
|
717 | |
523 | #if EV_AVOID_STDIO |
718 | #if EV_AVOID_STDIO |
524 | static void noinline |
719 | static void noinline ecb_cold |
525 | ev_printerr (const char *msg) |
720 | ev_printerr (const char *msg) |
526 | { |
721 | { |
527 | write (STDERR_FILENO, msg, strlen (msg)); |
722 | write (STDERR_FILENO, msg, strlen (msg)); |
528 | } |
723 | } |
529 | #endif |
724 | #endif |
530 | |
725 | |
531 | static void (*syserr_cb)(const char *msg); |
726 | static void (*syserr_cb)(const char *msg); |
532 | |
727 | |
533 | void |
728 | void ecb_cold |
534 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
729 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
535 | { |
730 | { |
536 | syserr_cb = cb; |
731 | syserr_cb = cb; |
537 | } |
732 | } |
538 | |
733 | |
539 | static void noinline |
734 | static void noinline ecb_cold |
540 | ev_syserr (const char *msg) |
735 | ev_syserr (const char *msg) |
541 | { |
736 | { |
542 | if (!msg) |
737 | if (!msg) |
543 | msg = "(libev) system error"; |
738 | msg = "(libev) system error"; |
544 | |
739 | |
545 | if (syserr_cb) |
740 | if (syserr_cb) |
546 | syserr_cb (msg); |
741 | syserr_cb (msg); |
547 | else |
742 | else |
548 | { |
743 | { |
549 | #if EV_AVOID_STDIO |
744 | #if EV_AVOID_STDIO |
550 | const char *err = strerror (errno); |
|
|
551 | |
|
|
552 | ev_printerr (msg); |
745 | ev_printerr (msg); |
553 | ev_printerr (": "); |
746 | ev_printerr (": "); |
554 | ev_printerr (err); |
747 | ev_printerr (strerror (errno)); |
555 | ev_printerr ("\n"); |
748 | ev_printerr ("\n"); |
556 | #else |
749 | #else |
557 | perror (msg); |
750 | perror (msg); |
558 | #endif |
751 | #endif |
559 | abort (); |
752 | abort (); |
… | |
… | |
579 | #endif |
772 | #endif |
580 | } |
773 | } |
581 | |
774 | |
582 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
775 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
583 | |
776 | |
584 | void |
777 | void ecb_cold |
585 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
778 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
586 | { |
779 | { |
587 | alloc = cb; |
780 | alloc = cb; |
588 | } |
781 | } |
589 | |
782 | |
… | |
… | |
593 | ptr = alloc (ptr, size); |
786 | ptr = alloc (ptr, size); |
594 | |
787 | |
595 | if (!ptr && size) |
788 | if (!ptr && size) |
596 | { |
789 | { |
597 | #if EV_AVOID_STDIO |
790 | #if EV_AVOID_STDIO |
598 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
791 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
599 | #else |
792 | #else |
600 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
793 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
601 | #endif |
794 | #endif |
602 | abort (); |
795 | abort (); |
603 | } |
796 | } |
604 | |
797 | |
605 | return ptr; |
798 | return ptr; |
… | |
… | |
622 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
815 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
623 | unsigned char unused; |
816 | unsigned char unused; |
624 | #if EV_USE_EPOLL |
817 | #if EV_USE_EPOLL |
625 | unsigned int egen; /* generation counter to counter epoll bugs */ |
818 | unsigned int egen; /* generation counter to counter epoll bugs */ |
626 | #endif |
819 | #endif |
627 | #if EV_SELECT_IS_WINSOCKET |
820 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
628 | SOCKET handle; |
821 | SOCKET handle; |
|
|
822 | #endif |
|
|
823 | #if EV_USE_IOCP |
|
|
824 | OVERLAPPED or, ow; |
629 | #endif |
825 | #endif |
630 | } ANFD; |
826 | } ANFD; |
631 | |
827 | |
632 | /* stores the pending event set for a given watcher */ |
828 | /* stores the pending event set for a given watcher */ |
633 | typedef struct |
829 | typedef struct |
… | |
… | |
698 | # define EV_RELEASE_CB (void)0 |
894 | # define EV_RELEASE_CB (void)0 |
699 | # define EV_ACQUIRE_CB (void)0 |
895 | # define EV_ACQUIRE_CB (void)0 |
700 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
896 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
701 | #endif |
897 | #endif |
702 | |
898 | |
703 | #define EVUNLOOP_RECURSE 0x80 |
899 | #define EVBREAK_RECURSE 0x80 |
704 | |
900 | |
705 | /*****************************************************************************/ |
901 | /*****************************************************************************/ |
706 | |
902 | |
707 | #ifndef EV_HAVE_EV_TIME |
903 | #ifndef EV_HAVE_EV_TIME |
708 | ev_tstamp |
904 | ev_tstamp |
… | |
… | |
752 | if (delay > 0.) |
948 | if (delay > 0.) |
753 | { |
949 | { |
754 | #if EV_USE_NANOSLEEP |
950 | #if EV_USE_NANOSLEEP |
755 | struct timespec ts; |
951 | struct timespec ts; |
756 | |
952 | |
757 | ts.tv_sec = (time_t)delay; |
953 | EV_TS_SET (ts, delay); |
758 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
759 | |
|
|
760 | nanosleep (&ts, 0); |
954 | nanosleep (&ts, 0); |
761 | #elif defined(_WIN32) |
955 | #elif defined(_WIN32) |
762 | Sleep ((unsigned long)(delay * 1e3)); |
956 | Sleep ((unsigned long)(delay * 1e3)); |
763 | #else |
957 | #else |
764 | struct timeval tv; |
958 | struct timeval tv; |
765 | |
959 | |
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 */ |
960 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
770 | /* something not guaranteed by newer posix versions, but guaranteed */ |
961 | /* something not guaranteed by newer posix versions, but guaranteed */ |
771 | /* by older ones */ |
962 | /* by older ones */ |
|
|
963 | EV_TV_SET (tv, delay); |
772 | select (0, 0, 0, 0, &tv); |
964 | select (0, 0, 0, 0, &tv); |
773 | #endif |
965 | #endif |
774 | } |
966 | } |
775 | } |
967 | } |
776 | |
968 | |
777 | /*****************************************************************************/ |
969 | /*****************************************************************************/ |
778 | |
970 | |
779 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
971 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
780 | |
972 | |
781 | /* find a suitable new size for the given array, */ |
973 | /* find a suitable new size for the given array, */ |
782 | /* hopefully by rounding to a ncie-to-malloc size */ |
974 | /* hopefully by rounding to a nice-to-malloc size */ |
783 | inline_size int |
975 | inline_size int |
784 | array_nextsize (int elem, int cur, int cnt) |
976 | array_nextsize (int elem, int cur, int cnt) |
785 | { |
977 | { |
786 | int ncur = cur + 1; |
978 | int ncur = cur + 1; |
787 | |
979 | |
… | |
… | |
799 | } |
991 | } |
800 | |
992 | |
801 | return ncur; |
993 | return ncur; |
802 | } |
994 | } |
803 | |
995 | |
804 | static noinline void * |
996 | static void * noinline ecb_cold |
805 | array_realloc (int elem, void *base, int *cur, int cnt) |
997 | array_realloc (int elem, void *base, int *cur, int cnt) |
806 | { |
998 | { |
807 | *cur = array_nextsize (elem, *cur, cnt); |
999 | *cur = array_nextsize (elem, *cur, cnt); |
808 | return ev_realloc (base, elem * *cur); |
1000 | return ev_realloc (base, elem * *cur); |
809 | } |
1001 | } |
… | |
… | |
812 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1004 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
813 | |
1005 | |
814 | #define array_needsize(type,base,cur,cnt,init) \ |
1006 | #define array_needsize(type,base,cur,cnt,init) \ |
815 | if (expect_false ((cnt) > (cur))) \ |
1007 | if (expect_false ((cnt) > (cur))) \ |
816 | { \ |
1008 | { \ |
817 | int ocur_ = (cur); \ |
1009 | int ecb_unused ocur_ = (cur); \ |
818 | (base) = (type *)array_realloc \ |
1010 | (base) = (type *)array_realloc \ |
819 | (sizeof (type), (base), &(cur), (cnt)); \ |
1011 | (sizeof (type), (base), &(cur), (cnt)); \ |
820 | init ((base) + (ocur_), (cur) - ocur_); \ |
1012 | init ((base) + (ocur_), (cur) - ocur_); \ |
821 | } |
1013 | } |
822 | |
1014 | |
… | |
… | |
922 | inline_size void |
1114 | inline_size void |
923 | fd_reify (EV_P) |
1115 | fd_reify (EV_P) |
924 | { |
1116 | { |
925 | int i; |
1117 | int i; |
926 | |
1118 | |
|
|
1119 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1120 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1121 | { |
|
|
1122 | int fd = fdchanges [i]; |
|
|
1123 | ANFD *anfd = anfds + fd; |
|
|
1124 | |
|
|
1125 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1126 | { |
|
|
1127 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1128 | |
|
|
1129 | if (handle != anfd->handle) |
|
|
1130 | { |
|
|
1131 | unsigned long arg; |
|
|
1132 | |
|
|
1133 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1134 | |
|
|
1135 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1136 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1137 | anfd->events = 0; |
|
|
1138 | anfd->handle = handle; |
|
|
1139 | } |
|
|
1140 | } |
|
|
1141 | } |
|
|
1142 | #endif |
|
|
1143 | |
927 | for (i = 0; i < fdchangecnt; ++i) |
1144 | for (i = 0; i < fdchangecnt; ++i) |
928 | { |
1145 | { |
929 | int fd = fdchanges [i]; |
1146 | int fd = fdchanges [i]; |
930 | ANFD *anfd = anfds + fd; |
1147 | ANFD *anfd = anfds + fd; |
931 | ev_io *w; |
1148 | ev_io *w; |
932 | |
1149 | |
933 | unsigned char events = 0; |
1150 | unsigned char o_events = anfd->events; |
|
|
1151 | unsigned char o_reify = anfd->reify; |
934 | |
1152 | |
935 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1153 | anfd->reify = 0; |
936 | events |= (unsigned char)w->events; |
|
|
937 | |
1154 | |
938 | #if EV_SELECT_IS_WINSOCKET |
1155 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
939 | if (events) |
|
|
940 | { |
1156 | { |
941 | unsigned long arg; |
1157 | anfd->events = 0; |
942 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
1158 | |
943 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
1159 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1160 | anfd->events |= (unsigned char)w->events; |
|
|
1161 | |
|
|
1162 | if (o_events != anfd->events) |
|
|
1163 | o_reify = EV__IOFDSET; /* actually |= */ |
944 | } |
1164 | } |
945 | #endif |
|
|
946 | |
1165 | |
947 | { |
1166 | 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); |
1167 | backend_modify (EV_A_ fd, o_events, anfd->events); |
956 | } |
|
|
957 | } |
1168 | } |
958 | |
1169 | |
959 | fdchangecnt = 0; |
1170 | fdchangecnt = 0; |
960 | } |
1171 | } |
961 | |
1172 | |
… | |
… | |
973 | fdchanges [fdchangecnt - 1] = fd; |
1184 | fdchanges [fdchangecnt - 1] = fd; |
974 | } |
1185 | } |
975 | } |
1186 | } |
976 | |
1187 | |
977 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1188 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
978 | inline_speed void |
1189 | inline_speed void ecb_cold |
979 | fd_kill (EV_P_ int fd) |
1190 | fd_kill (EV_P_ int fd) |
980 | { |
1191 | { |
981 | ev_io *w; |
1192 | ev_io *w; |
982 | |
1193 | |
983 | while ((w = (ev_io *)anfds [fd].head)) |
1194 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
986 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1197 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
987 | } |
1198 | } |
988 | } |
1199 | } |
989 | |
1200 | |
990 | /* check whether the given fd is actually valid, for error recovery */ |
1201 | /* check whether the given fd is actually valid, for error recovery */ |
991 | inline_size int |
1202 | inline_size int ecb_cold |
992 | fd_valid (int fd) |
1203 | fd_valid (int fd) |
993 | { |
1204 | { |
994 | #ifdef _WIN32 |
1205 | #ifdef _WIN32 |
995 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1206 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
996 | #else |
1207 | #else |
997 | return fcntl (fd, F_GETFD) != -1; |
1208 | return fcntl (fd, F_GETFD) != -1; |
998 | #endif |
1209 | #endif |
999 | } |
1210 | } |
1000 | |
1211 | |
1001 | /* called on EBADF to verify fds */ |
1212 | /* called on EBADF to verify fds */ |
1002 | static void noinline |
1213 | static void noinline ecb_cold |
1003 | fd_ebadf (EV_P) |
1214 | fd_ebadf (EV_P) |
1004 | { |
1215 | { |
1005 | int fd; |
1216 | int fd; |
1006 | |
1217 | |
1007 | for (fd = 0; fd < anfdmax; ++fd) |
1218 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1009 | if (!fd_valid (fd) && errno == EBADF) |
1220 | if (!fd_valid (fd) && errno == EBADF) |
1010 | fd_kill (EV_A_ fd); |
1221 | fd_kill (EV_A_ fd); |
1011 | } |
1222 | } |
1012 | |
1223 | |
1013 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1224 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1014 | static void noinline |
1225 | static void noinline ecb_cold |
1015 | fd_enomem (EV_P) |
1226 | fd_enomem (EV_P) |
1016 | { |
1227 | { |
1017 | int fd; |
1228 | int fd; |
1018 | |
1229 | |
1019 | for (fd = anfdmax; fd--; ) |
1230 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1054 | } |
1265 | } |
1055 | |
1266 | |
1056 | /*****************************************************************************/ |
1267 | /*****************************************************************************/ |
1057 | |
1268 | |
1058 | /* |
1269 | /* |
1059 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
1270 | * 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 |
1271 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1061 | * the branching factor of the d-tree. |
1272 | * the branching factor of the d-tree. |
1062 | */ |
1273 | */ |
1063 | |
1274 | |
1064 | /* |
1275 | /* |
… | |
… | |
1214 | |
1425 | |
1215 | /*****************************************************************************/ |
1426 | /*****************************************************************************/ |
1216 | |
1427 | |
1217 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1428 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1218 | |
1429 | |
1219 | static void noinline |
1430 | static void noinline ecb_cold |
1220 | evpipe_init (EV_P) |
1431 | evpipe_init (EV_P) |
1221 | { |
1432 | { |
1222 | if (!ev_is_active (&pipe_w)) |
1433 | if (!ev_is_active (&pipe_w)) |
1223 | { |
1434 | { |
1224 | # if EV_USE_EVENTFD |
1435 | # if EV_USE_EVENTFD |
… | |
… | |
1246 | ev_io_start (EV_A_ &pipe_w); |
1457 | ev_io_start (EV_A_ &pipe_w); |
1247 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1458 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1248 | } |
1459 | } |
1249 | } |
1460 | } |
1250 | |
1461 | |
1251 | inline_size void |
1462 | inline_speed void |
1252 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1463 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1253 | { |
1464 | { |
1254 | if (!*flag) |
1465 | if (expect_true (*flag)) |
|
|
1466 | return; |
|
|
1467 | |
|
|
1468 | *flag = 1; |
|
|
1469 | |
|
|
1470 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1471 | |
|
|
1472 | pipe_write_skipped = 1; |
|
|
1473 | |
|
|
1474 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1475 | |
|
|
1476 | if (pipe_write_wanted) |
1255 | { |
1477 | { |
|
|
1478 | int old_errno; |
|
|
1479 | |
|
|
1480 | pipe_write_skipped = 0; /* just an optimsiation, no fence needed */ |
|
|
1481 | |
1256 | int old_errno = errno; /* save errno because write might clobber it */ |
1482 | old_errno = errno; /* save errno because write will clobber it */ |
1257 | char dummy; |
|
|
1258 | |
|
|
1259 | *flag = 1; |
|
|
1260 | |
1483 | |
1261 | #if EV_USE_EVENTFD |
1484 | #if EV_USE_EVENTFD |
1262 | if (evfd >= 0) |
1485 | if (evfd >= 0) |
1263 | { |
1486 | { |
1264 | uint64_t counter = 1; |
1487 | uint64_t counter = 1; |
1265 | write (evfd, &counter, sizeof (uint64_t)); |
1488 | write (evfd, &counter, sizeof (uint64_t)); |
1266 | } |
1489 | } |
1267 | else |
1490 | else |
1268 | #endif |
1491 | #endif |
|
|
1492 | { |
|
|
1493 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1494 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1495 | /* so when you think this write should be a send instead, please find out */ |
|
|
1496 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1497 | /* tell me. thank you. */ |
1269 | write (evpipe [1], &dummy, 1); |
1498 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1499 | } |
1270 | |
1500 | |
1271 | errno = old_errno; |
1501 | errno = old_errno; |
1272 | } |
1502 | } |
1273 | } |
1503 | } |
1274 | |
1504 | |
… | |
… | |
1277 | static void |
1507 | static void |
1278 | pipecb (EV_P_ ev_io *iow, int revents) |
1508 | pipecb (EV_P_ ev_io *iow, int revents) |
1279 | { |
1509 | { |
1280 | int i; |
1510 | int i; |
1281 | |
1511 | |
|
|
1512 | if (revents & EV_READ) |
|
|
1513 | { |
1282 | #if EV_USE_EVENTFD |
1514 | #if EV_USE_EVENTFD |
1283 | if (evfd >= 0) |
1515 | if (evfd >= 0) |
1284 | { |
1516 | { |
1285 | uint64_t counter; |
1517 | uint64_t counter; |
1286 | read (evfd, &counter, sizeof (uint64_t)); |
1518 | read (evfd, &counter, sizeof (uint64_t)); |
1287 | } |
1519 | } |
1288 | else |
1520 | else |
1289 | #endif |
1521 | #endif |
1290 | { |
1522 | { |
1291 | char dummy; |
1523 | char dummy; |
|
|
1524 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1292 | read (evpipe [0], &dummy, 1); |
1525 | read (evpipe [0], &dummy, 1); |
|
|
1526 | } |
1293 | } |
1527 | } |
1294 | |
1528 | |
|
|
1529 | pipe_write_skipped = 0; |
|
|
1530 | |
|
|
1531 | #if EV_SIGNAL_ENABLE |
1295 | if (sig_pending) |
1532 | if (sig_pending) |
1296 | { |
1533 | { |
1297 | sig_pending = 0; |
1534 | sig_pending = 0; |
1298 | |
1535 | |
1299 | for (i = EV_NSIG - 1; i--; ) |
1536 | for (i = EV_NSIG - 1; i--; ) |
1300 | if (expect_false (signals [i].pending)) |
1537 | if (expect_false (signals [i].pending)) |
1301 | ev_feed_signal_event (EV_A_ i + 1); |
1538 | ev_feed_signal_event (EV_A_ i + 1); |
1302 | } |
1539 | } |
|
|
1540 | #endif |
1303 | |
1541 | |
1304 | #if EV_ASYNC_ENABLE |
1542 | #if EV_ASYNC_ENABLE |
1305 | if (async_pending) |
1543 | if (async_pending) |
1306 | { |
1544 | { |
1307 | async_pending = 0; |
1545 | async_pending = 0; |
… | |
… | |
1316 | #endif |
1554 | #endif |
1317 | } |
1555 | } |
1318 | |
1556 | |
1319 | /*****************************************************************************/ |
1557 | /*****************************************************************************/ |
1320 | |
1558 | |
|
|
1559 | void |
|
|
1560 | ev_feed_signal (int signum) |
|
|
1561 | { |
|
|
1562 | #if EV_MULTIPLICITY |
|
|
1563 | EV_P = signals [signum - 1].loop; |
|
|
1564 | |
|
|
1565 | if (!EV_A) |
|
|
1566 | return; |
|
|
1567 | #endif |
|
|
1568 | |
|
|
1569 | if (!ev_active (&pipe_w)) |
|
|
1570 | return; |
|
|
1571 | |
|
|
1572 | signals [signum - 1].pending = 1; |
|
|
1573 | evpipe_write (EV_A_ &sig_pending); |
|
|
1574 | } |
|
|
1575 | |
1321 | static void |
1576 | static void |
1322 | ev_sighandler (int signum) |
1577 | ev_sighandler (int signum) |
1323 | { |
1578 | { |
1324 | #if EV_MULTIPLICITY |
|
|
1325 | EV_P = signals [signum - 1].loop; |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | #ifdef _WIN32 |
1579 | #ifdef _WIN32 |
1329 | signal (signum, ev_sighandler); |
1580 | signal (signum, ev_sighandler); |
1330 | #endif |
1581 | #endif |
1331 | |
1582 | |
1332 | signals [signum - 1].pending = 1; |
1583 | ev_feed_signal (signum); |
1333 | evpipe_write (EV_A_ &sig_pending); |
|
|
1334 | } |
1584 | } |
1335 | |
1585 | |
1336 | void noinline |
1586 | void noinline |
1337 | ev_feed_signal_event (EV_P_ int signum) |
1587 | ev_feed_signal_event (EV_P_ int signum) |
1338 | { |
1588 | { |
… | |
… | |
1438 | |
1688 | |
1439 | #endif |
1689 | #endif |
1440 | |
1690 | |
1441 | /*****************************************************************************/ |
1691 | /*****************************************************************************/ |
1442 | |
1692 | |
|
|
1693 | #if EV_USE_IOCP |
|
|
1694 | # include "ev_iocp.c" |
|
|
1695 | #endif |
1443 | #if EV_USE_PORT |
1696 | #if EV_USE_PORT |
1444 | # include "ev_port.c" |
1697 | # include "ev_port.c" |
1445 | #endif |
1698 | #endif |
1446 | #if EV_USE_KQUEUE |
1699 | #if EV_USE_KQUEUE |
1447 | # include "ev_kqueue.c" |
1700 | # include "ev_kqueue.c" |
… | |
… | |
1454 | #endif |
1707 | #endif |
1455 | #if EV_USE_SELECT |
1708 | #if EV_USE_SELECT |
1456 | # include "ev_select.c" |
1709 | # include "ev_select.c" |
1457 | #endif |
1710 | #endif |
1458 | |
1711 | |
1459 | int |
1712 | int ecb_cold |
1460 | ev_version_major (void) |
1713 | ev_version_major (void) |
1461 | { |
1714 | { |
1462 | return EV_VERSION_MAJOR; |
1715 | return EV_VERSION_MAJOR; |
1463 | } |
1716 | } |
1464 | |
1717 | |
1465 | int |
1718 | int ecb_cold |
1466 | ev_version_minor (void) |
1719 | ev_version_minor (void) |
1467 | { |
1720 | { |
1468 | return EV_VERSION_MINOR; |
1721 | return EV_VERSION_MINOR; |
1469 | } |
1722 | } |
1470 | |
1723 | |
1471 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1724 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1472 | int inline_size |
1725 | int inline_size ecb_cold |
1473 | enable_secure (void) |
1726 | enable_secure (void) |
1474 | { |
1727 | { |
1475 | #ifdef _WIN32 |
1728 | #ifdef _WIN32 |
1476 | return 0; |
1729 | return 0; |
1477 | #else |
1730 | #else |
1478 | return getuid () != geteuid () |
1731 | return getuid () != geteuid () |
1479 | || getgid () != getegid (); |
1732 | || getgid () != getegid (); |
1480 | #endif |
1733 | #endif |
1481 | } |
1734 | } |
1482 | |
1735 | |
1483 | unsigned int |
1736 | unsigned int ecb_cold |
1484 | ev_supported_backends (void) |
1737 | ev_supported_backends (void) |
1485 | { |
1738 | { |
1486 | unsigned int flags = 0; |
1739 | unsigned int flags = 0; |
1487 | |
1740 | |
1488 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1741 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1492 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1745 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1493 | |
1746 | |
1494 | return flags; |
1747 | return flags; |
1495 | } |
1748 | } |
1496 | |
1749 | |
1497 | unsigned int |
1750 | unsigned int ecb_cold |
1498 | ev_recommended_backends (void) |
1751 | ev_recommended_backends (void) |
1499 | { |
1752 | { |
1500 | unsigned int flags = ev_supported_backends (); |
1753 | unsigned int flags = ev_supported_backends (); |
1501 | |
1754 | |
1502 | #ifndef __NetBSD__ |
1755 | #ifndef __NetBSD__ |
… | |
… | |
1514 | #endif |
1767 | #endif |
1515 | |
1768 | |
1516 | return flags; |
1769 | return flags; |
1517 | } |
1770 | } |
1518 | |
1771 | |
1519 | unsigned int |
1772 | unsigned int ecb_cold |
1520 | ev_embeddable_backends (void) |
1773 | ev_embeddable_backends (void) |
1521 | { |
1774 | { |
1522 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1775 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1523 | |
1776 | |
1524 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1777 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1525 | /* please fix it and tell me how to detect the fix */ |
1778 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1526 | flags &= ~EVBACKEND_EPOLL; |
1779 | flags &= ~EVBACKEND_EPOLL; |
1527 | |
1780 | |
1528 | return flags; |
1781 | return flags; |
1529 | } |
1782 | } |
1530 | |
1783 | |
1531 | unsigned int |
1784 | unsigned int |
… | |
… | |
1569 | ev_userdata (EV_P) |
1822 | ev_userdata (EV_P) |
1570 | { |
1823 | { |
1571 | return userdata; |
1824 | return userdata; |
1572 | } |
1825 | } |
1573 | |
1826 | |
|
|
1827 | void |
1574 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1828 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1575 | { |
1829 | { |
1576 | invoke_cb = invoke_pending_cb; |
1830 | invoke_cb = invoke_pending_cb; |
1577 | } |
1831 | } |
1578 | |
1832 | |
|
|
1833 | void |
1579 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1834 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1580 | { |
1835 | { |
1581 | release_cb = release; |
1836 | release_cb = release; |
1582 | acquire_cb = acquire; |
1837 | acquire_cb = acquire; |
1583 | } |
1838 | } |
1584 | #endif |
1839 | #endif |
1585 | |
1840 | |
1586 | /* initialise a loop structure, must be zero-initialised */ |
1841 | /* initialise a loop structure, must be zero-initialised */ |
1587 | static void noinline |
1842 | static void noinline ecb_cold |
1588 | loop_init (EV_P_ unsigned int flags) |
1843 | loop_init (EV_P_ unsigned int flags) |
1589 | { |
1844 | { |
1590 | if (!backend) |
1845 | if (!backend) |
1591 | { |
1846 | { |
|
|
1847 | origflags = flags; |
|
|
1848 | |
1592 | #if EV_USE_REALTIME |
1849 | #if EV_USE_REALTIME |
1593 | if (!have_realtime) |
1850 | if (!have_realtime) |
1594 | { |
1851 | { |
1595 | struct timespec ts; |
1852 | struct timespec ts; |
1596 | |
1853 | |
… | |
… | |
1618 | if (!(flags & EVFLAG_NOENV) |
1875 | if (!(flags & EVFLAG_NOENV) |
1619 | && !enable_secure () |
1876 | && !enable_secure () |
1620 | && getenv ("LIBEV_FLAGS")) |
1877 | && getenv ("LIBEV_FLAGS")) |
1621 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1878 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1622 | |
1879 | |
1623 | ev_rt_now = ev_time (); |
1880 | ev_rt_now = ev_time (); |
1624 | mn_now = get_clock (); |
1881 | mn_now = get_clock (); |
1625 | now_floor = mn_now; |
1882 | now_floor = mn_now; |
1626 | rtmn_diff = ev_rt_now - mn_now; |
1883 | rtmn_diff = ev_rt_now - mn_now; |
1627 | #if EV_FEATURE_API |
1884 | #if EV_FEATURE_API |
1628 | invoke_cb = ev_invoke_pending; |
1885 | invoke_cb = ev_invoke_pending; |
1629 | #endif |
1886 | #endif |
1630 | |
1887 | |
1631 | io_blocktime = 0.; |
1888 | io_blocktime = 0.; |
1632 | timeout_blocktime = 0.; |
1889 | timeout_blocktime = 0.; |
1633 | backend = 0; |
1890 | backend = 0; |
1634 | backend_fd = -1; |
1891 | backend_fd = -1; |
1635 | sig_pending = 0; |
1892 | sig_pending = 0; |
1636 | #if EV_ASYNC_ENABLE |
1893 | #if EV_ASYNC_ENABLE |
1637 | async_pending = 0; |
1894 | async_pending = 0; |
1638 | #endif |
1895 | #endif |
|
|
1896 | pipe_write_skipped = 0; |
|
|
1897 | pipe_write_wanted = 0; |
1639 | #if EV_USE_INOTIFY |
1898 | #if EV_USE_INOTIFY |
1640 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1899 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1641 | #endif |
1900 | #endif |
1642 | #if EV_USE_SIGNALFD |
1901 | #if EV_USE_SIGNALFD |
1643 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1902 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1644 | #endif |
1903 | #endif |
1645 | |
1904 | |
1646 | if (!(flags & 0x0000ffffU)) |
1905 | if (!(flags & EVBACKEND_MASK)) |
1647 | flags |= ev_recommended_backends (); |
1906 | flags |= ev_recommended_backends (); |
1648 | |
1907 | |
|
|
1908 | #if EV_USE_IOCP |
|
|
1909 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1910 | #endif |
1649 | #if EV_USE_PORT |
1911 | #if EV_USE_PORT |
1650 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1912 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1651 | #endif |
1913 | #endif |
1652 | #if EV_USE_KQUEUE |
1914 | #if EV_USE_KQUEUE |
1653 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1915 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1670 | #endif |
1932 | #endif |
1671 | } |
1933 | } |
1672 | } |
1934 | } |
1673 | |
1935 | |
1674 | /* free up a loop structure */ |
1936 | /* free up a loop structure */ |
1675 | static void noinline |
1937 | void ecb_cold |
1676 | loop_destroy (EV_P) |
1938 | ev_loop_destroy (EV_P) |
1677 | { |
1939 | { |
1678 | int i; |
1940 | int i; |
|
|
1941 | |
|
|
1942 | #if EV_MULTIPLICITY |
|
|
1943 | /* mimic free (0) */ |
|
|
1944 | if (!EV_A) |
|
|
1945 | return; |
|
|
1946 | #endif |
|
|
1947 | |
|
|
1948 | #if EV_CLEANUP_ENABLE |
|
|
1949 | /* queue cleanup watchers (and execute them) */ |
|
|
1950 | if (expect_false (cleanupcnt)) |
|
|
1951 | { |
|
|
1952 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1953 | EV_INVOKE_PENDING; |
|
|
1954 | } |
|
|
1955 | #endif |
|
|
1956 | |
|
|
1957 | #if EV_CHILD_ENABLE |
|
|
1958 | if (ev_is_active (&childev)) |
|
|
1959 | { |
|
|
1960 | ev_ref (EV_A); /* child watcher */ |
|
|
1961 | ev_signal_stop (EV_A_ &childev); |
|
|
1962 | } |
|
|
1963 | #endif |
1679 | |
1964 | |
1680 | if (ev_is_active (&pipe_w)) |
1965 | if (ev_is_active (&pipe_w)) |
1681 | { |
1966 | { |
1682 | /*ev_ref (EV_A);*/ |
1967 | /*ev_ref (EV_A);*/ |
1683 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1968 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1705 | #endif |
1990 | #endif |
1706 | |
1991 | |
1707 | if (backend_fd >= 0) |
1992 | if (backend_fd >= 0) |
1708 | close (backend_fd); |
1993 | close (backend_fd); |
1709 | |
1994 | |
|
|
1995 | #if EV_USE_IOCP |
|
|
1996 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1997 | #endif |
1710 | #if EV_USE_PORT |
1998 | #if EV_USE_PORT |
1711 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1999 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1712 | #endif |
2000 | #endif |
1713 | #if EV_USE_KQUEUE |
2001 | #if EV_USE_KQUEUE |
1714 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
2002 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1741 | array_free (periodic, EMPTY); |
2029 | array_free (periodic, EMPTY); |
1742 | #endif |
2030 | #endif |
1743 | #if EV_FORK_ENABLE |
2031 | #if EV_FORK_ENABLE |
1744 | array_free (fork, EMPTY); |
2032 | array_free (fork, EMPTY); |
1745 | #endif |
2033 | #endif |
|
|
2034 | #if EV_CLEANUP_ENABLE |
|
|
2035 | array_free (cleanup, EMPTY); |
|
|
2036 | #endif |
1746 | array_free (prepare, EMPTY); |
2037 | array_free (prepare, EMPTY); |
1747 | array_free (check, EMPTY); |
2038 | array_free (check, EMPTY); |
1748 | #if EV_ASYNC_ENABLE |
2039 | #if EV_ASYNC_ENABLE |
1749 | array_free (async, EMPTY); |
2040 | array_free (async, EMPTY); |
1750 | #endif |
2041 | #endif |
1751 | |
2042 | |
1752 | backend = 0; |
2043 | backend = 0; |
|
|
2044 | |
|
|
2045 | #if EV_MULTIPLICITY |
|
|
2046 | if (ev_is_default_loop (EV_A)) |
|
|
2047 | #endif |
|
|
2048 | ev_default_loop_ptr = 0; |
|
|
2049 | #if EV_MULTIPLICITY |
|
|
2050 | else |
|
|
2051 | ev_free (EV_A); |
|
|
2052 | #endif |
1753 | } |
2053 | } |
1754 | |
2054 | |
1755 | #if EV_USE_INOTIFY |
2055 | #if EV_USE_INOTIFY |
1756 | inline_size void infy_fork (EV_P); |
2056 | inline_size void infy_fork (EV_P); |
1757 | #endif |
2057 | #endif |
… | |
… | |
1772 | infy_fork (EV_A); |
2072 | infy_fork (EV_A); |
1773 | #endif |
2073 | #endif |
1774 | |
2074 | |
1775 | if (ev_is_active (&pipe_w)) |
2075 | if (ev_is_active (&pipe_w)) |
1776 | { |
2076 | { |
1777 | /* this "locks" the handlers against writing to the pipe */ |
2077 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1778 | /* while we modify the fd vars */ |
|
|
1779 | sig_pending = 1; |
|
|
1780 | #if EV_ASYNC_ENABLE |
|
|
1781 | async_pending = 1; |
|
|
1782 | #endif |
|
|
1783 | |
2078 | |
1784 | ev_ref (EV_A); |
2079 | ev_ref (EV_A); |
1785 | ev_io_stop (EV_A_ &pipe_w); |
2080 | ev_io_stop (EV_A_ &pipe_w); |
1786 | |
2081 | |
1787 | #if EV_USE_EVENTFD |
2082 | #if EV_USE_EVENTFD |
… | |
… | |
1805 | postfork = 0; |
2100 | postfork = 0; |
1806 | } |
2101 | } |
1807 | |
2102 | |
1808 | #if EV_MULTIPLICITY |
2103 | #if EV_MULTIPLICITY |
1809 | |
2104 | |
1810 | struct ev_loop * |
2105 | struct ev_loop * ecb_cold |
1811 | ev_loop_new (unsigned int flags) |
2106 | ev_loop_new (unsigned int flags) |
1812 | { |
2107 | { |
1813 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2108 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1814 | |
2109 | |
1815 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2110 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1816 | loop_init (EV_A_ flags); |
2111 | loop_init (EV_A_ flags); |
1817 | |
2112 | |
1818 | if (ev_backend (EV_A)) |
2113 | if (ev_backend (EV_A)) |
1819 | return EV_A; |
2114 | return EV_A; |
1820 | |
2115 | |
|
|
2116 | ev_free (EV_A); |
1821 | return 0; |
2117 | return 0; |
1822 | } |
2118 | } |
1823 | |
2119 | |
1824 | void |
|
|
1825 | ev_loop_destroy (EV_P) |
|
|
1826 | { |
|
|
1827 | loop_destroy (EV_A); |
|
|
1828 | ev_free (loop); |
|
|
1829 | } |
|
|
1830 | |
|
|
1831 | void |
|
|
1832 | ev_loop_fork (EV_P) |
|
|
1833 | { |
|
|
1834 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1835 | } |
|
|
1836 | #endif /* multiplicity */ |
2120 | #endif /* multiplicity */ |
1837 | |
2121 | |
1838 | #if EV_VERIFY |
2122 | #if EV_VERIFY |
1839 | static void noinline |
2123 | static void noinline ecb_cold |
1840 | verify_watcher (EV_P_ W w) |
2124 | verify_watcher (EV_P_ W w) |
1841 | { |
2125 | { |
1842 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2126 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1843 | |
2127 | |
1844 | if (w->pending) |
2128 | if (w->pending) |
1845 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2129 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1846 | } |
2130 | } |
1847 | |
2131 | |
1848 | static void noinline |
2132 | static void noinline ecb_cold |
1849 | verify_heap (EV_P_ ANHE *heap, int N) |
2133 | verify_heap (EV_P_ ANHE *heap, int N) |
1850 | { |
2134 | { |
1851 | int i; |
2135 | int i; |
1852 | |
2136 | |
1853 | for (i = HEAP0; i < N + HEAP0; ++i) |
2137 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1858 | |
2142 | |
1859 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2143 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1860 | } |
2144 | } |
1861 | } |
2145 | } |
1862 | |
2146 | |
1863 | static void noinline |
2147 | static void noinline ecb_cold |
1864 | array_verify (EV_P_ W *ws, int cnt) |
2148 | array_verify (EV_P_ W *ws, int cnt) |
1865 | { |
2149 | { |
1866 | while (cnt--) |
2150 | while (cnt--) |
1867 | { |
2151 | { |
1868 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2152 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1870 | } |
2154 | } |
1871 | } |
2155 | } |
1872 | #endif |
2156 | #endif |
1873 | |
2157 | |
1874 | #if EV_FEATURE_API |
2158 | #if EV_FEATURE_API |
1875 | void |
2159 | void ecb_cold |
1876 | ev_verify (EV_P) |
2160 | ev_verify (EV_P) |
1877 | { |
2161 | { |
1878 | #if EV_VERIFY |
2162 | #if EV_VERIFY |
1879 | int i; |
2163 | int i; |
1880 | WL w; |
2164 | WL w; |
… | |
… | |
1915 | #if EV_FORK_ENABLE |
2199 | #if EV_FORK_ENABLE |
1916 | assert (forkmax >= forkcnt); |
2200 | assert (forkmax >= forkcnt); |
1917 | array_verify (EV_A_ (W *)forks, forkcnt); |
2201 | array_verify (EV_A_ (W *)forks, forkcnt); |
1918 | #endif |
2202 | #endif |
1919 | |
2203 | |
|
|
2204 | #if EV_CLEANUP_ENABLE |
|
|
2205 | assert (cleanupmax >= cleanupcnt); |
|
|
2206 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2207 | #endif |
|
|
2208 | |
1920 | #if EV_ASYNC_ENABLE |
2209 | #if EV_ASYNC_ENABLE |
1921 | assert (asyncmax >= asynccnt); |
2210 | assert (asyncmax >= asynccnt); |
1922 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2211 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1923 | #endif |
2212 | #endif |
1924 | |
2213 | |
… | |
… | |
1941 | #endif |
2230 | #endif |
1942 | } |
2231 | } |
1943 | #endif |
2232 | #endif |
1944 | |
2233 | |
1945 | #if EV_MULTIPLICITY |
2234 | #if EV_MULTIPLICITY |
1946 | struct ev_loop * |
2235 | struct ev_loop * ecb_cold |
1947 | ev_default_loop_init (unsigned int flags) |
|
|
1948 | #else |
2236 | #else |
1949 | int |
2237 | int |
|
|
2238 | #endif |
1950 | ev_default_loop (unsigned int flags) |
2239 | ev_default_loop (unsigned int flags) |
1951 | #endif |
|
|
1952 | { |
2240 | { |
1953 | if (!ev_default_loop_ptr) |
2241 | if (!ev_default_loop_ptr) |
1954 | { |
2242 | { |
1955 | #if EV_MULTIPLICITY |
2243 | #if EV_MULTIPLICITY |
1956 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2244 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1975 | |
2263 | |
1976 | return ev_default_loop_ptr; |
2264 | return ev_default_loop_ptr; |
1977 | } |
2265 | } |
1978 | |
2266 | |
1979 | void |
2267 | void |
1980 | ev_default_destroy (void) |
2268 | ev_loop_fork (EV_P) |
1981 | { |
2269 | { |
1982 | #if EV_MULTIPLICITY |
|
|
1983 | EV_P = ev_default_loop_ptr; |
|
|
1984 | #endif |
|
|
1985 | |
|
|
1986 | ev_default_loop_ptr = 0; |
|
|
1987 | |
|
|
1988 | #if EV_CHILD_ENABLE |
|
|
1989 | ev_ref (EV_A); /* child watcher */ |
|
|
1990 | ev_signal_stop (EV_A_ &childev); |
|
|
1991 | #endif |
|
|
1992 | |
|
|
1993 | loop_destroy (EV_A); |
|
|
1994 | } |
|
|
1995 | |
|
|
1996 | void |
|
|
1997 | ev_default_fork (void) |
|
|
1998 | { |
|
|
1999 | #if EV_MULTIPLICITY |
|
|
2000 | EV_P = ev_default_loop_ptr; |
|
|
2001 | #endif |
|
|
2002 | |
|
|
2003 | postfork = 1; /* must be in line with ev_loop_fork */ |
2270 | postfork = 1; /* must be in line with ev_default_fork */ |
2004 | } |
2271 | } |
2005 | |
2272 | |
2006 | /*****************************************************************************/ |
2273 | /*****************************************************************************/ |
2007 | |
2274 | |
2008 | void |
2275 | void |
… | |
… | |
2030 | |
2297 | |
2031 | for (pri = NUMPRI; pri--; ) |
2298 | for (pri = NUMPRI; pri--; ) |
2032 | while (pendingcnt [pri]) |
2299 | while (pendingcnt [pri]) |
2033 | { |
2300 | { |
2034 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2301 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2035 | |
|
|
2036 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2037 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2038 | |
2302 | |
2039 | p->w->pending = 0; |
2303 | p->w->pending = 0; |
2040 | EV_CB_INVOKE (p->w, p->events); |
2304 | EV_CB_INVOKE (p->w, p->events); |
2041 | EV_FREQUENT_CHECK; |
2305 | EV_FREQUENT_CHECK; |
2042 | } |
2306 | } |
… | |
… | |
2104 | feed_reverse_done (EV_A_ EV_TIMER); |
2368 | feed_reverse_done (EV_A_ EV_TIMER); |
2105 | } |
2369 | } |
2106 | } |
2370 | } |
2107 | |
2371 | |
2108 | #if EV_PERIODIC_ENABLE |
2372 | #if EV_PERIODIC_ENABLE |
|
|
2373 | |
|
|
2374 | static void noinline |
|
|
2375 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2376 | { |
|
|
2377 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2378 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2379 | |
|
|
2380 | /* the above almost always errs on the low side */ |
|
|
2381 | while (at <= ev_rt_now) |
|
|
2382 | { |
|
|
2383 | ev_tstamp nat = at + w->interval; |
|
|
2384 | |
|
|
2385 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2386 | if (expect_false (nat == at)) |
|
|
2387 | { |
|
|
2388 | at = ev_rt_now; |
|
|
2389 | break; |
|
|
2390 | } |
|
|
2391 | |
|
|
2392 | at = nat; |
|
|
2393 | } |
|
|
2394 | |
|
|
2395 | ev_at (w) = at; |
|
|
2396 | } |
|
|
2397 | |
2109 | /* make periodics pending */ |
2398 | /* make periodics pending */ |
2110 | inline_size void |
2399 | inline_size void |
2111 | periodics_reify (EV_P) |
2400 | periodics_reify (EV_P) |
2112 | { |
2401 | { |
2113 | EV_FREQUENT_CHECK; |
2402 | EV_FREQUENT_CHECK; |
… | |
… | |
2132 | ANHE_at_cache (periodics [HEAP0]); |
2421 | ANHE_at_cache (periodics [HEAP0]); |
2133 | downheap (periodics, periodiccnt, HEAP0); |
2422 | downheap (periodics, periodiccnt, HEAP0); |
2134 | } |
2423 | } |
2135 | else if (w->interval) |
2424 | else if (w->interval) |
2136 | { |
2425 | { |
2137 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2426 | periodic_recalc (EV_A_ w); |
2138 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2139 | /* this might happen because of floating point inexactness */ |
|
|
2140 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2141 | { |
|
|
2142 | ev_at (w) += w->interval; |
|
|
2143 | |
|
|
2144 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2145 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2146 | /* has effectively asked to get triggered more often than possible */ |
|
|
2147 | if (ev_at (w) < ev_rt_now) |
|
|
2148 | ev_at (w) = ev_rt_now; |
|
|
2149 | } |
|
|
2150 | |
|
|
2151 | ANHE_at_cache (periodics [HEAP0]); |
2427 | ANHE_at_cache (periodics [HEAP0]); |
2152 | downheap (periodics, periodiccnt, HEAP0); |
2428 | downheap (periodics, periodiccnt, HEAP0); |
2153 | } |
2429 | } |
2154 | else |
2430 | else |
2155 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2431 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2162 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2438 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2163 | } |
2439 | } |
2164 | } |
2440 | } |
2165 | |
2441 | |
2166 | /* simply recalculate all periodics */ |
2442 | /* simply recalculate all periodics */ |
2167 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
2443 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2168 | static void noinline |
2444 | static void noinline ecb_cold |
2169 | periodics_reschedule (EV_P) |
2445 | periodics_reschedule (EV_P) |
2170 | { |
2446 | { |
2171 | int i; |
2447 | int i; |
2172 | |
2448 | |
2173 | /* adjust periodics after time jump */ |
2449 | /* adjust periodics after time jump */ |
… | |
… | |
2176 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2452 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2177 | |
2453 | |
2178 | if (w->reschedule_cb) |
2454 | if (w->reschedule_cb) |
2179 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2455 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2180 | else if (w->interval) |
2456 | else if (w->interval) |
2181 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2457 | periodic_recalc (EV_A_ w); |
2182 | |
2458 | |
2183 | ANHE_at_cache (periodics [i]); |
2459 | ANHE_at_cache (periodics [i]); |
2184 | } |
2460 | } |
2185 | |
2461 | |
2186 | reheap (periodics, periodiccnt); |
2462 | reheap (periodics, periodiccnt); |
2187 | } |
2463 | } |
2188 | #endif |
2464 | #endif |
2189 | |
2465 | |
2190 | /* adjust all timers by a given offset */ |
2466 | /* adjust all timers by a given offset */ |
2191 | static void noinline |
2467 | static void noinline ecb_cold |
2192 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2468 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2193 | { |
2469 | { |
2194 | int i; |
2470 | int i; |
2195 | |
2471 | |
2196 | for (i = 0; i < timercnt; ++i) |
2472 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2233 | * doesn't hurt either as we only do this on time-jumps or |
2509 | * doesn't hurt either as we only do this on time-jumps or |
2234 | * in the unlikely event of having been preempted here. |
2510 | * in the unlikely event of having been preempted here. |
2235 | */ |
2511 | */ |
2236 | for (i = 4; --i; ) |
2512 | for (i = 4; --i; ) |
2237 | { |
2513 | { |
|
|
2514 | ev_tstamp diff; |
2238 | rtmn_diff = ev_rt_now - mn_now; |
2515 | rtmn_diff = ev_rt_now - mn_now; |
2239 | |
2516 | |
|
|
2517 | diff = odiff - rtmn_diff; |
|
|
2518 | |
2240 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2519 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2241 | return; /* all is well */ |
2520 | return; /* all is well */ |
2242 | |
2521 | |
2243 | ev_rt_now = ev_time (); |
2522 | ev_rt_now = ev_time (); |
2244 | mn_now = get_clock (); |
2523 | mn_now = get_clock (); |
2245 | now_floor = mn_now; |
2524 | now_floor = mn_now; |
… | |
… | |
2268 | mn_now = ev_rt_now; |
2547 | mn_now = ev_rt_now; |
2269 | } |
2548 | } |
2270 | } |
2549 | } |
2271 | |
2550 | |
2272 | void |
2551 | void |
2273 | ev_loop (EV_P_ int flags) |
2552 | ev_run (EV_P_ int flags) |
2274 | { |
2553 | { |
2275 | #if EV_FEATURE_API |
2554 | #if EV_FEATURE_API |
2276 | ++loop_depth; |
2555 | ++loop_depth; |
2277 | #endif |
2556 | #endif |
2278 | |
2557 | |
2279 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2558 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2280 | |
2559 | |
2281 | loop_done = EVUNLOOP_CANCEL; |
2560 | loop_done = EVBREAK_CANCEL; |
2282 | |
2561 | |
2283 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2562 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2284 | |
2563 | |
2285 | do |
2564 | do |
2286 | { |
2565 | { |
… | |
… | |
2329 | /* calculate blocking time */ |
2608 | /* calculate blocking time */ |
2330 | { |
2609 | { |
2331 | ev_tstamp waittime = 0.; |
2610 | ev_tstamp waittime = 0.; |
2332 | ev_tstamp sleeptime = 0.; |
2611 | ev_tstamp sleeptime = 0.; |
2333 | |
2612 | |
|
|
2613 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2614 | ev_tstamp prev_mn_now = mn_now; |
|
|
2615 | |
|
|
2616 | /* update time to cancel out callback processing overhead */ |
|
|
2617 | time_update (EV_A_ 1e100); |
|
|
2618 | |
|
|
2619 | /* from now on, we want a pipe-wake-up */ |
|
|
2620 | pipe_write_wanted = 1; |
|
|
2621 | |
|
|
2622 | ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2623 | |
2334 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
2624 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2335 | { |
2625 | { |
2336 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2337 | ev_tstamp prev_mn_now = mn_now; |
|
|
2338 | |
|
|
2339 | /* update time to cancel out callback processing overhead */ |
|
|
2340 | time_update (EV_A_ 1e100); |
|
|
2341 | |
|
|
2342 | waittime = MAX_BLOCKTIME; |
2626 | waittime = MAX_BLOCKTIME; |
2343 | |
2627 | |
2344 | if (timercnt) |
2628 | if (timercnt) |
2345 | { |
2629 | { |
2346 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2630 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2347 | if (waittime > to) waittime = to; |
2631 | if (waittime > to) waittime = to; |
2348 | } |
2632 | } |
2349 | |
2633 | |
2350 | #if EV_PERIODIC_ENABLE |
2634 | #if EV_PERIODIC_ENABLE |
2351 | if (periodiccnt) |
2635 | if (periodiccnt) |
2352 | { |
2636 | { |
2353 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2637 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2354 | if (waittime > to) waittime = to; |
2638 | if (waittime > to) waittime = to; |
2355 | } |
2639 | } |
2356 | #endif |
2640 | #endif |
2357 | |
2641 | |
2358 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2642 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2359 | if (expect_false (waittime < timeout_blocktime)) |
2643 | if (expect_false (waittime < timeout_blocktime)) |
2360 | waittime = timeout_blocktime; |
2644 | waittime = timeout_blocktime; |
|
|
2645 | |
|
|
2646 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2647 | /* to pass a minimum nonzero value to the backend */ |
|
|
2648 | if (expect_false (waittime < backend_mintime)) |
|
|
2649 | waittime = backend_mintime; |
2361 | |
2650 | |
2362 | /* extra check because io_blocktime is commonly 0 */ |
2651 | /* extra check because io_blocktime is commonly 0 */ |
2363 | if (expect_false (io_blocktime)) |
2652 | if (expect_false (io_blocktime)) |
2364 | { |
2653 | { |
2365 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2654 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2366 | |
2655 | |
2367 | if (sleeptime > waittime - backend_fudge) |
2656 | if (sleeptime > waittime - backend_mintime) |
2368 | sleeptime = waittime - backend_fudge; |
2657 | sleeptime = waittime - backend_mintime; |
2369 | |
2658 | |
2370 | if (expect_true (sleeptime > 0.)) |
2659 | if (expect_true (sleeptime > 0.)) |
2371 | { |
2660 | { |
2372 | ev_sleep (sleeptime); |
2661 | ev_sleep (sleeptime); |
2373 | waittime -= sleeptime; |
2662 | waittime -= sleeptime; |
… | |
… | |
2376 | } |
2665 | } |
2377 | |
2666 | |
2378 | #if EV_FEATURE_API |
2667 | #if EV_FEATURE_API |
2379 | ++loop_count; |
2668 | ++loop_count; |
2380 | #endif |
2669 | #endif |
2381 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2670 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2382 | backend_poll (EV_A_ waittime); |
2671 | backend_poll (EV_A_ waittime); |
2383 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2672 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2673 | |
|
|
2674 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2675 | |
|
|
2676 | if (pipe_write_skipped) |
|
|
2677 | { |
|
|
2678 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2679 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2680 | } |
|
|
2681 | |
2384 | |
2682 | |
2385 | /* update ev_rt_now, do magic */ |
2683 | /* update ev_rt_now, do magic */ |
2386 | time_update (EV_A_ waittime + sleeptime); |
2684 | time_update (EV_A_ waittime + sleeptime); |
2387 | } |
2685 | } |
2388 | |
2686 | |
… | |
… | |
2406 | EV_INVOKE_PENDING; |
2704 | EV_INVOKE_PENDING; |
2407 | } |
2705 | } |
2408 | while (expect_true ( |
2706 | while (expect_true ( |
2409 | activecnt |
2707 | activecnt |
2410 | && !loop_done |
2708 | && !loop_done |
2411 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2709 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2412 | )); |
2710 | )); |
2413 | |
2711 | |
2414 | if (loop_done == EVUNLOOP_ONE) |
2712 | if (loop_done == EVBREAK_ONE) |
2415 | loop_done = EVUNLOOP_CANCEL; |
2713 | loop_done = EVBREAK_CANCEL; |
2416 | |
2714 | |
2417 | #if EV_FEATURE_API |
2715 | #if EV_FEATURE_API |
2418 | --loop_depth; |
2716 | --loop_depth; |
2419 | #endif |
2717 | #endif |
2420 | } |
2718 | } |
2421 | |
2719 | |
2422 | void |
2720 | void |
2423 | ev_unloop (EV_P_ int how) |
2721 | ev_break (EV_P_ int how) |
2424 | { |
2722 | { |
2425 | loop_done = how; |
2723 | loop_done = how; |
2426 | } |
2724 | } |
2427 | |
2725 | |
2428 | void |
2726 | void |
… | |
… | |
2576 | EV_FREQUENT_CHECK; |
2874 | EV_FREQUENT_CHECK; |
2577 | |
2875 | |
2578 | wlist_del (&anfds[w->fd].head, (WL)w); |
2876 | wlist_del (&anfds[w->fd].head, (WL)w); |
2579 | ev_stop (EV_A_ (W)w); |
2877 | ev_stop (EV_A_ (W)w); |
2580 | |
2878 | |
2581 | fd_change (EV_A_ w->fd, 1); |
2879 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2582 | |
2880 | |
2583 | EV_FREQUENT_CHECK; |
2881 | EV_FREQUENT_CHECK; |
2584 | } |
2882 | } |
2585 | |
2883 | |
2586 | void noinline |
2884 | void noinline |
… | |
… | |
2678 | if (w->reschedule_cb) |
2976 | if (w->reschedule_cb) |
2679 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2977 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2680 | else if (w->interval) |
2978 | else if (w->interval) |
2681 | { |
2979 | { |
2682 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2980 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2683 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2981 | periodic_recalc (EV_A_ w); |
2684 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2685 | } |
2982 | } |
2686 | else |
2983 | else |
2687 | ev_at (w) = w->offset; |
2984 | ev_at (w) = w->offset; |
2688 | |
2985 | |
2689 | EV_FREQUENT_CHECK; |
2986 | EV_FREQUENT_CHECK; |
… | |
… | |
2810 | sa.sa_handler = ev_sighandler; |
3107 | sa.sa_handler = ev_sighandler; |
2811 | sigfillset (&sa.sa_mask); |
3108 | sigfillset (&sa.sa_mask); |
2812 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3109 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2813 | sigaction (w->signum, &sa, 0); |
3110 | sigaction (w->signum, &sa, 0); |
2814 | |
3111 | |
|
|
3112 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3113 | { |
2815 | sigemptyset (&sa.sa_mask); |
3114 | sigemptyset (&sa.sa_mask); |
2816 | sigaddset (&sa.sa_mask, w->signum); |
3115 | sigaddset (&sa.sa_mask, w->signum); |
2817 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3116 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3117 | } |
2818 | #endif |
3118 | #endif |
2819 | } |
3119 | } |
2820 | |
3120 | |
2821 | EV_FREQUENT_CHECK; |
3121 | EV_FREQUENT_CHECK; |
2822 | } |
3122 | } |
… | |
… | |
2963 | if (!pend || pend == path) |
3263 | if (!pend || pend == path) |
2964 | break; |
3264 | break; |
2965 | |
3265 | |
2966 | *pend = 0; |
3266 | *pend = 0; |
2967 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3267 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2968 | } |
3268 | } |
2969 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3269 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2970 | } |
3270 | } |
2971 | } |
3271 | } |
2972 | |
3272 | |
2973 | if (w->wd >= 0) |
3273 | if (w->wd >= 0) |
… | |
… | |
3040 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3340 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3041 | ofs += sizeof (struct inotify_event) + ev->len; |
3341 | ofs += sizeof (struct inotify_event) + ev->len; |
3042 | } |
3342 | } |
3043 | } |
3343 | } |
3044 | |
3344 | |
3045 | inline_size unsigned int |
|
|
3046 | ev_linux_version (void) |
|
|
3047 | { |
|
|
3048 | struct utsname buf; |
|
|
3049 | unsigned int v; |
|
|
3050 | int i; |
|
|
3051 | char *p = buf.release; |
|
|
3052 | |
|
|
3053 | if (uname (&buf)) |
|
|
3054 | return 0; |
|
|
3055 | |
|
|
3056 | for (i = 3+1; --i; ) |
|
|
3057 | { |
|
|
3058 | unsigned int c = 0; |
|
|
3059 | |
|
|
3060 | for (;;) |
|
|
3061 | { |
|
|
3062 | if (*p >= '0' && *p <= '9') |
|
|
3063 | c = c * 10 + *p++ - '0'; |
|
|
3064 | else |
|
|
3065 | { |
|
|
3066 | p += *p == '.'; |
|
|
3067 | break; |
|
|
3068 | } |
|
|
3069 | } |
|
|
3070 | |
|
|
3071 | v = (v << 8) | c; |
|
|
3072 | } |
|
|
3073 | |
|
|
3074 | return v; |
|
|
3075 | } |
|
|
3076 | |
|
|
3077 | inline_size void |
3345 | inline_size void ecb_cold |
3078 | ev_check_2625 (EV_P) |
3346 | ev_check_2625 (EV_P) |
3079 | { |
3347 | { |
3080 | /* kernels < 2.6.25 are borked |
3348 | /* kernels < 2.6.25 are borked |
3081 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3349 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3082 | */ |
3350 | */ |
… | |
… | |
3403 | |
3671 | |
3404 | #if EV_EMBED_ENABLE |
3672 | #if EV_EMBED_ENABLE |
3405 | void noinline |
3673 | void noinline |
3406 | ev_embed_sweep (EV_P_ ev_embed *w) |
3674 | ev_embed_sweep (EV_P_ ev_embed *w) |
3407 | { |
3675 | { |
3408 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3676 | ev_run (w->other, EVRUN_NOWAIT); |
3409 | } |
3677 | } |
3410 | |
3678 | |
3411 | static void |
3679 | static void |
3412 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3680 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3413 | { |
3681 | { |
3414 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3682 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3415 | |
3683 | |
3416 | if (ev_cb (w)) |
3684 | if (ev_cb (w)) |
3417 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3685 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3418 | else |
3686 | else |
3419 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3687 | ev_run (w->other, EVRUN_NOWAIT); |
3420 | } |
3688 | } |
3421 | |
3689 | |
3422 | static void |
3690 | static void |
3423 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3691 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3424 | { |
3692 | { |
… | |
… | |
3428 | EV_P = w->other; |
3696 | EV_P = w->other; |
3429 | |
3697 | |
3430 | while (fdchangecnt) |
3698 | while (fdchangecnt) |
3431 | { |
3699 | { |
3432 | fd_reify (EV_A); |
3700 | fd_reify (EV_A); |
3433 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3701 | ev_run (EV_A_ EVRUN_NOWAIT); |
3434 | } |
3702 | } |
3435 | } |
3703 | } |
3436 | } |
3704 | } |
3437 | |
3705 | |
3438 | static void |
3706 | static void |
… | |
… | |
3444 | |
3712 | |
3445 | { |
3713 | { |
3446 | EV_P = w->other; |
3714 | EV_P = w->other; |
3447 | |
3715 | |
3448 | ev_loop_fork (EV_A); |
3716 | ev_loop_fork (EV_A); |
3449 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3717 | ev_run (EV_A_ EVRUN_NOWAIT); |
3450 | } |
3718 | } |
3451 | |
3719 | |
3452 | ev_embed_start (EV_A_ w); |
3720 | ev_embed_start (EV_A_ w); |
3453 | } |
3721 | } |
3454 | |
3722 | |
… | |
… | |
3546 | |
3814 | |
3547 | EV_FREQUENT_CHECK; |
3815 | EV_FREQUENT_CHECK; |
3548 | } |
3816 | } |
3549 | #endif |
3817 | #endif |
3550 | |
3818 | |
|
|
3819 | #if EV_CLEANUP_ENABLE |
|
|
3820 | void |
|
|
3821 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
3822 | { |
|
|
3823 | if (expect_false (ev_is_active (w))) |
|
|
3824 | return; |
|
|
3825 | |
|
|
3826 | EV_FREQUENT_CHECK; |
|
|
3827 | |
|
|
3828 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3829 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3830 | cleanups [cleanupcnt - 1] = w; |
|
|
3831 | |
|
|
3832 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3833 | ev_unref (EV_A); |
|
|
3834 | EV_FREQUENT_CHECK; |
|
|
3835 | } |
|
|
3836 | |
|
|
3837 | void |
|
|
3838 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3839 | { |
|
|
3840 | clear_pending (EV_A_ (W)w); |
|
|
3841 | if (expect_false (!ev_is_active (w))) |
|
|
3842 | return; |
|
|
3843 | |
|
|
3844 | EV_FREQUENT_CHECK; |
|
|
3845 | ev_ref (EV_A); |
|
|
3846 | |
|
|
3847 | { |
|
|
3848 | int active = ev_active (w); |
|
|
3849 | |
|
|
3850 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3851 | ev_active (cleanups [active - 1]) = active; |
|
|
3852 | } |
|
|
3853 | |
|
|
3854 | ev_stop (EV_A_ (W)w); |
|
|
3855 | |
|
|
3856 | EV_FREQUENT_CHECK; |
|
|
3857 | } |
|
|
3858 | #endif |
|
|
3859 | |
3551 | #if EV_ASYNC_ENABLE |
3860 | #if EV_ASYNC_ENABLE |
3552 | void |
3861 | void |
3553 | ev_async_start (EV_P_ ev_async *w) |
3862 | ev_async_start (EV_P_ ev_async *w) |
3554 | { |
3863 | { |
3555 | if (expect_false (ev_is_active (w))) |
3864 | if (expect_false (ev_is_active (w))) |
3556 | return; |
3865 | return; |
|
|
3866 | |
|
|
3867 | w->sent = 0; |
3557 | |
3868 | |
3558 | evpipe_init (EV_A); |
3869 | evpipe_init (EV_A); |
3559 | |
3870 | |
3560 | EV_FREQUENT_CHECK; |
3871 | EV_FREQUENT_CHECK; |
3561 | |
3872 | |
… | |
… | |
3664 | } |
3975 | } |
3665 | |
3976 | |
3666 | /*****************************************************************************/ |
3977 | /*****************************************************************************/ |
3667 | |
3978 | |
3668 | #if EV_WALK_ENABLE |
3979 | #if EV_WALK_ENABLE |
3669 | void |
3980 | void ecb_cold |
3670 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3981 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3671 | { |
3982 | { |
3672 | int i, j; |
3983 | int i, j; |
3673 | ev_watcher_list *wl, *wn; |
3984 | ev_watcher_list *wl, *wn; |
3674 | |
3985 | |
… | |
… | |
3781 | |
4092 | |
3782 | #if EV_MULTIPLICITY |
4093 | #if EV_MULTIPLICITY |
3783 | #include "ev_wrap.h" |
4094 | #include "ev_wrap.h" |
3784 | #endif |
4095 | #endif |
3785 | |
4096 | |
3786 | #ifdef __cplusplus |
4097 | EV_CPP(}) |
3787 | } |
|
|
3788 | #endif |
|
|
3789 | |
4098 | |