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 1 |
86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
|
|
87 | # endif |
85 | # else |
88 | # else |
|
|
89 | # undef EV_USE_NANOSLEEP |
86 | # define EV_USE_NANOSLEEP 0 |
90 | # define EV_USE_NANOSLEEP 0 |
|
|
91 | # endif |
|
|
92 | |
|
|
93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
94 | # ifndef EV_USE_SELECT |
|
|
95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
87 | # endif |
96 | # endif |
|
|
97 | # else |
|
|
98 | # undef EV_USE_SELECT |
|
|
99 | # define EV_USE_SELECT 0 |
88 | # endif |
100 | # endif |
89 | |
101 | |
|
|
102 | # if HAVE_POLL && HAVE_POLL_H |
90 | # ifndef EV_USE_SELECT |
103 | # ifndef EV_USE_POLL |
91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
92 | # define EV_USE_SELECT 1 |
|
|
93 | # else |
|
|
94 | # define EV_USE_SELECT 0 |
|
|
95 | # endif |
105 | # endif |
96 | # endif |
|
|
97 | |
|
|
98 | # ifndef EV_USE_POLL |
|
|
99 | # if HAVE_POLL && HAVE_POLL_H |
|
|
100 | # define EV_USE_POLL 1 |
|
|
101 | # else |
106 | # else |
|
|
107 | # undef EV_USE_POLL |
102 | # define EV_USE_POLL 0 |
108 | # define EV_USE_POLL 0 |
103 | # endif |
|
|
104 | # endif |
109 | # endif |
105 | |
110 | |
106 | # ifndef EV_USE_EPOLL |
|
|
107 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
108 | # define EV_USE_EPOLL 1 |
112 | # ifndef EV_USE_EPOLL |
109 | # else |
113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
110 | # define EV_USE_EPOLL 0 |
|
|
111 | # endif |
114 | # endif |
|
|
115 | # else |
|
|
116 | # undef EV_USE_EPOLL |
|
|
117 | # define EV_USE_EPOLL 0 |
112 | # endif |
118 | # endif |
113 | |
119 | |
114 | # ifndef EV_USE_KQUEUE |
|
|
115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
120 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
116 | # define EV_USE_KQUEUE 1 |
121 | # ifndef EV_USE_KQUEUE |
117 | # else |
122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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 |
124 | # define EV_USE_PORT 1 |
130 | # ifndef EV_USE_PORT |
125 | # else |
131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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 |
132 | # define EV_USE_INOTIFY 1 |
139 | # ifndef EV_USE_INOTIFY |
133 | # else |
|
|
134 | # define EV_USE_INOTIFY 0 |
140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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 |
140 | # define EV_USE_SIGNALFD 1 |
148 | # ifndef EV_USE_SIGNALFD |
141 | # else |
|
|
142 | # define EV_USE_SIGNALFD 0 |
149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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 1 |
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, |
|
|
206 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
|
207 | * ordered to have a vacuum, or they do anything for money. |
|
|
208 | * This might help. Or not. |
|
|
209 | */ |
|
|
210 | #define _DARWIN_UNLIMITED_SELECT 1 |
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 |
|
|
400 | extern "C" { |
|
|
401 | # endif |
|
|
402 | int (eventfd) (unsigned int initval, int flags); |
423 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
403 | # ifdef __cplusplus |
|
|
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 |
|
|
435 | |
|
|
436 | |
447 | |
437 | /**/ |
448 | /**/ |
438 | |
449 | |
439 | #if EV_VERIFY >= 3 |
450 | #if EV_VERIFY >= 3 |
440 | # define EV_FREQUENT_CHECK ev_loop_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 |
|
|
448 | * to ensure progress, time-wise, even when rounding |
|
|
449 | * errors are against us. |
|
|
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) */ |
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 | |
|
|
469 | /* the following are taken from libecb */ |
|
|
470 | /* ecb.h start */ |
|
|
471 | |
|
|
472 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
473 | * what their idiot authors think are the "more important" extensions, |
|
|
474 | * causing enourmous grief in return for some better fake benchmark numbers. |
|
|
475 | * or so. |
|
|
476 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
477 | * an issue with that they should have done it right in the first place. |
|
|
478 | */ |
|
|
479 | #ifndef ECB_GCC_VERSION |
|
|
480 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
|
|
481 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
482 | #else |
|
|
483 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
484 | #endif |
|
|
485 | #endif |
|
|
486 | |
|
|
487 | #if __cplusplus |
|
|
488 | #define ecb_inline static inline |
|
|
489 | #elif ECB_GCC_VERSION(2,5) |
|
|
490 | #define ecb_inline static __inline__ |
|
|
491 | #elif ECB_C99 |
|
|
492 | #define ecb_inline static inline |
461 | #else |
493 | #else |
462 | # define expect(expr,value) (expr) |
494 | #define ecb_inline static |
463 | # define noinline |
|
|
464 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
465 | # define inline |
|
|
466 | # endif |
495 | #endif |
|
|
496 | |
|
|
497 | #ifndef ECB_MEMORY_FENCE |
|
|
498 | #if ECB_GCC_VERSION(2,5) |
|
|
499 | #if __x86 |
|
|
500 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
501 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
502 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ |
|
|
503 | #elif __amd64 |
|
|
504 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
505 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
|
|
506 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") |
|
|
507 | #endif |
467 | #endif |
508 | #endif |
|
|
509 | #endif |
468 | |
510 | |
|
|
511 | #ifndef ECB_MEMORY_FENCE |
|
|
512 | #if ECB_GCC_VERSION(4,4) |
|
|
513 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
514 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
|
|
515 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
|
|
516 | #elif _MSC_VER >= 1400 |
|
|
517 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
518 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
519 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
520 | #elif defined(_WIN32) && defined(MemoryBarrier) |
|
|
521 | #define ECB_MEMORY_FENCE MemoryBarrier () |
|
|
522 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
523 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
524 | #endif |
|
|
525 | #endif |
|
|
526 | |
|
|
527 | #ifndef ECB_MEMORY_FENCE |
|
|
528 | #include <pthread.h> |
|
|
529 | |
|
|
530 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
531 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
532 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
533 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
534 | #endif |
|
|
535 | |
|
|
536 | #if ECB_GCC_VERSION(3,1) |
|
|
537 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
538 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
539 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
540 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
541 | #else |
|
|
542 | #define ecb_attribute(attrlist) |
|
|
543 | #define ecb_is_constant(expr) 0 |
|
|
544 | #define ecb_expect(expr,value) (expr) |
|
|
545 | #define ecb_prefetch(addr,rw,locality) |
|
|
546 | #endif |
|
|
547 | |
|
|
548 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
549 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
550 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
551 | #define ecb_const ecb_attribute ((__const__)) |
|
|
552 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
553 | |
|
|
554 | #if ECB_GCC_VERSION(4,3) |
|
|
555 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
556 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
557 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
558 | #else |
|
|
559 | #define ecb_artificial |
|
|
560 | #define ecb_hot |
|
|
561 | #define ecb_cold |
|
|
562 | #endif |
|
|
563 | |
|
|
564 | /* put around conditional expressions if you are very sure that the */ |
|
|
565 | /* expression is mostly true or mostly false. note that these return */ |
|
|
566 | /* booleans, not the expression. */ |
469 | #define expect_false(expr) expect ((expr) != 0, 0) |
567 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
470 | #define expect_true(expr) expect ((expr) != 0, 1) |
568 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
569 | /* ecb.h end */ |
|
|
570 | |
|
|
571 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
572 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
573 | #define noinline ecb_noinline |
|
|
574 | |
471 | #define inline_size static inline |
575 | #define inline_size ecb_inline |
472 | |
576 | |
473 | #if EV_FEATURE_CODE |
577 | #if EV_FEATURE_CODE |
474 | # define inline_speed static inline |
578 | # define inline_speed ecb_inline |
475 | #else |
579 | #else |
476 | # define inline_speed static noinline |
580 | # define inline_speed static noinline |
477 | #endif |
581 | #endif |
478 | |
582 | |
479 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
583 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
494 | #define ev_active(w) ((W)(w))->active |
598 | #define ev_active(w) ((W)(w))->active |
495 | #define ev_at(w) ((WT)(w))->at |
599 | #define ev_at(w) ((WT)(w))->at |
496 | |
600 | |
497 | #if EV_USE_REALTIME |
601 | #if EV_USE_REALTIME |
498 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
602 | /* 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 */ |
603 | /* giving it a reasonably high chance of working on typical architectures */ |
500 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
604 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
501 | #endif |
605 | #endif |
502 | |
606 | |
503 | #if EV_USE_MONOTONIC |
607 | #if EV_USE_MONOTONIC |
504 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
608 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
… | |
… | |
518 | # include "ev_win32.c" |
622 | # include "ev_win32.c" |
519 | #endif |
623 | #endif |
520 | |
624 | |
521 | /*****************************************************************************/ |
625 | /*****************************************************************************/ |
522 | |
626 | |
|
|
627 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
628 | |
|
|
629 | #if EV_USE_FLOOR |
|
|
630 | # include <math.h> |
|
|
631 | # define ev_floor(v) floor (v) |
|
|
632 | #else |
|
|
633 | |
|
|
634 | #include <float.h> |
|
|
635 | |
|
|
636 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
637 | static ev_tstamp noinline |
|
|
638 | ev_floor (ev_tstamp v) |
|
|
639 | { |
|
|
640 | /* the choice of shift factor is not terribly important */ |
|
|
641 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
642 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
643 | #else |
|
|
644 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
645 | #endif |
|
|
646 | |
|
|
647 | /* argument too large for an unsigned long? */ |
|
|
648 | if (expect_false (v >= shift)) |
|
|
649 | { |
|
|
650 | ev_tstamp f; |
|
|
651 | |
|
|
652 | if (v == v - 1.) |
|
|
653 | return v; /* very large number */ |
|
|
654 | |
|
|
655 | f = shift * ev_floor (v * (1. / shift)); |
|
|
656 | return f + ev_floor (v - f); |
|
|
657 | } |
|
|
658 | |
|
|
659 | /* special treatment for negative args? */ |
|
|
660 | if (expect_false (v < 0.)) |
|
|
661 | { |
|
|
662 | ev_tstamp f = -ev_floor (-v); |
|
|
663 | |
|
|
664 | return f - (f == v ? 0 : 1); |
|
|
665 | } |
|
|
666 | |
|
|
667 | /* fits into an unsigned long */ |
|
|
668 | return (unsigned long)v; |
|
|
669 | } |
|
|
670 | |
|
|
671 | #endif |
|
|
672 | |
|
|
673 | /*****************************************************************************/ |
|
|
674 | |
|
|
675 | #ifdef __linux |
|
|
676 | # include <sys/utsname.h> |
|
|
677 | #endif |
|
|
678 | |
|
|
679 | static unsigned int noinline ecb_cold |
|
|
680 | ev_linux_version (void) |
|
|
681 | { |
|
|
682 | #ifdef __linux |
|
|
683 | unsigned int v = 0; |
|
|
684 | struct utsname buf; |
|
|
685 | int i; |
|
|
686 | char *p = buf.release; |
|
|
687 | |
|
|
688 | if (uname (&buf)) |
|
|
689 | return 0; |
|
|
690 | |
|
|
691 | for (i = 3+1; --i; ) |
|
|
692 | { |
|
|
693 | unsigned int c = 0; |
|
|
694 | |
|
|
695 | for (;;) |
|
|
696 | { |
|
|
697 | if (*p >= '0' && *p <= '9') |
|
|
698 | c = c * 10 + *p++ - '0'; |
|
|
699 | else |
|
|
700 | { |
|
|
701 | p += *p == '.'; |
|
|
702 | break; |
|
|
703 | } |
|
|
704 | } |
|
|
705 | |
|
|
706 | v = (v << 8) | c; |
|
|
707 | } |
|
|
708 | |
|
|
709 | return v; |
|
|
710 | #else |
|
|
711 | return 0; |
|
|
712 | #endif |
|
|
713 | } |
|
|
714 | |
|
|
715 | /*****************************************************************************/ |
|
|
716 | |
523 | #if EV_AVOID_STDIO |
717 | #if EV_AVOID_STDIO |
524 | static void noinline |
718 | static void noinline ecb_cold |
525 | ev_printerr (const char *msg) |
719 | ev_printerr (const char *msg) |
526 | { |
720 | { |
527 | write (STDERR_FILENO, msg, strlen (msg)); |
721 | write (STDERR_FILENO, msg, strlen (msg)); |
528 | } |
722 | } |
529 | #endif |
723 | #endif |
530 | |
724 | |
531 | static void (*syserr_cb)(const char *msg); |
725 | static void (*syserr_cb)(const char *msg); |
532 | |
726 | |
533 | void |
727 | void ecb_cold |
534 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
728 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
535 | { |
729 | { |
536 | syserr_cb = cb; |
730 | syserr_cb = cb; |
537 | } |
731 | } |
538 | |
732 | |
539 | static void noinline |
733 | static void noinline ecb_cold |
540 | ev_syserr (const char *msg) |
734 | ev_syserr (const char *msg) |
541 | { |
735 | { |
542 | if (!msg) |
736 | if (!msg) |
543 | msg = "(libev) system error"; |
737 | msg = "(libev) system error"; |
544 | |
738 | |
545 | if (syserr_cb) |
739 | if (syserr_cb) |
546 | syserr_cb (msg); |
740 | syserr_cb (msg); |
547 | else |
741 | else |
548 | { |
742 | { |
549 | #if EV_AVOID_STDIO |
743 | #if EV_AVOID_STDIO |
550 | const char *err = strerror (errno); |
|
|
551 | |
|
|
552 | ev_printerr (msg); |
744 | ev_printerr (msg); |
553 | ev_printerr (": "); |
745 | ev_printerr (": "); |
554 | ev_printerr (err); |
746 | ev_printerr (strerror (errno)); |
555 | ev_printerr ("\n"); |
747 | ev_printerr ("\n"); |
556 | #else |
748 | #else |
557 | perror (msg); |
749 | perror (msg); |
558 | #endif |
750 | #endif |
559 | abort (); |
751 | abort (); |
… | |
… | |
579 | #endif |
771 | #endif |
580 | } |
772 | } |
581 | |
773 | |
582 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
774 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
583 | |
775 | |
584 | void |
776 | void ecb_cold |
585 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
777 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
586 | { |
778 | { |
587 | alloc = cb; |
779 | alloc = cb; |
588 | } |
780 | } |
589 | |
781 | |
… | |
… | |
593 | ptr = alloc (ptr, size); |
785 | ptr = alloc (ptr, size); |
594 | |
786 | |
595 | if (!ptr && size) |
787 | if (!ptr && size) |
596 | { |
788 | { |
597 | #if EV_AVOID_STDIO |
789 | #if EV_AVOID_STDIO |
598 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
790 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
599 | #else |
791 | #else |
600 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
792 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
601 | #endif |
793 | #endif |
602 | abort (); |
794 | abort (); |
603 | } |
795 | } |
604 | |
796 | |
605 | return ptr; |
797 | return ptr; |
… | |
… | |
622 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
814 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
623 | unsigned char unused; |
815 | unsigned char unused; |
624 | #if EV_USE_EPOLL |
816 | #if EV_USE_EPOLL |
625 | unsigned int egen; /* generation counter to counter epoll bugs */ |
817 | unsigned int egen; /* generation counter to counter epoll bugs */ |
626 | #endif |
818 | #endif |
627 | #if EV_SELECT_IS_WINSOCKET |
819 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
628 | SOCKET handle; |
820 | SOCKET handle; |
|
|
821 | #endif |
|
|
822 | #if EV_USE_IOCP |
|
|
823 | OVERLAPPED or, ow; |
629 | #endif |
824 | #endif |
630 | } ANFD; |
825 | } ANFD; |
631 | |
826 | |
632 | /* stores the pending event set for a given watcher */ |
827 | /* stores the pending event set for a given watcher */ |
633 | typedef struct |
828 | typedef struct |
… | |
… | |
698 | # define EV_RELEASE_CB (void)0 |
893 | # define EV_RELEASE_CB (void)0 |
699 | # define EV_ACQUIRE_CB (void)0 |
894 | # define EV_ACQUIRE_CB (void)0 |
700 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
895 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
701 | #endif |
896 | #endif |
702 | |
897 | |
703 | #define EVUNLOOP_RECURSE 0x80 |
898 | #define EVBREAK_RECURSE 0x80 |
704 | |
899 | |
705 | /*****************************************************************************/ |
900 | /*****************************************************************************/ |
706 | |
901 | |
707 | #ifndef EV_HAVE_EV_TIME |
902 | #ifndef EV_HAVE_EV_TIME |
708 | ev_tstamp |
903 | ev_tstamp |
… | |
… | |
752 | if (delay > 0.) |
947 | if (delay > 0.) |
753 | { |
948 | { |
754 | #if EV_USE_NANOSLEEP |
949 | #if EV_USE_NANOSLEEP |
755 | struct timespec ts; |
950 | struct timespec ts; |
756 | |
951 | |
757 | ts.tv_sec = (time_t)delay; |
952 | EV_TS_SET (ts, delay); |
758 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
759 | |
|
|
760 | nanosleep (&ts, 0); |
953 | nanosleep (&ts, 0); |
761 | #elif defined(_WIN32) |
954 | #elif defined(_WIN32) |
762 | Sleep ((unsigned long)(delay * 1e3)); |
955 | Sleep ((unsigned long)(delay * 1e3)); |
763 | #else |
956 | #else |
764 | struct timeval tv; |
957 | struct timeval tv; |
765 | |
958 | |
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 */ |
959 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
770 | /* something not guaranteed by newer posix versions, but guaranteed */ |
960 | /* something not guaranteed by newer posix versions, but guaranteed */ |
771 | /* by older ones */ |
961 | /* by older ones */ |
|
|
962 | EV_TV_SET (tv, delay); |
772 | select (0, 0, 0, 0, &tv); |
963 | select (0, 0, 0, 0, &tv); |
773 | #endif |
964 | #endif |
774 | } |
965 | } |
775 | } |
966 | } |
776 | |
967 | |
777 | /*****************************************************************************/ |
968 | /*****************************************************************************/ |
778 | |
969 | |
779 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
970 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
780 | |
971 | |
781 | /* find a suitable new size for the given array, */ |
972 | /* find a suitable new size for the given array, */ |
782 | /* hopefully by rounding to a ncie-to-malloc size */ |
973 | /* hopefully by rounding to a nice-to-malloc size */ |
783 | inline_size int |
974 | inline_size int |
784 | array_nextsize (int elem, int cur, int cnt) |
975 | array_nextsize (int elem, int cur, int cnt) |
785 | { |
976 | { |
786 | int ncur = cur + 1; |
977 | int ncur = cur + 1; |
787 | |
978 | |
… | |
… | |
799 | } |
990 | } |
800 | |
991 | |
801 | return ncur; |
992 | return ncur; |
802 | } |
993 | } |
803 | |
994 | |
804 | static noinline void * |
995 | static void * noinline ecb_cold |
805 | array_realloc (int elem, void *base, int *cur, int cnt) |
996 | array_realloc (int elem, void *base, int *cur, int cnt) |
806 | { |
997 | { |
807 | *cur = array_nextsize (elem, *cur, cnt); |
998 | *cur = array_nextsize (elem, *cur, cnt); |
808 | return ev_realloc (base, elem * *cur); |
999 | return ev_realloc (base, elem * *cur); |
809 | } |
1000 | } |
… | |
… | |
812 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1003 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
813 | |
1004 | |
814 | #define array_needsize(type,base,cur,cnt,init) \ |
1005 | #define array_needsize(type,base,cur,cnt,init) \ |
815 | if (expect_false ((cnt) > (cur))) \ |
1006 | if (expect_false ((cnt) > (cur))) \ |
816 | { \ |
1007 | { \ |
817 | int ocur_ = (cur); \ |
1008 | int ecb_unused ocur_ = (cur); \ |
818 | (base) = (type *)array_realloc \ |
1009 | (base) = (type *)array_realloc \ |
819 | (sizeof (type), (base), &(cur), (cnt)); \ |
1010 | (sizeof (type), (base), &(cur), (cnt)); \ |
820 | init ((base) + (ocur_), (cur) - ocur_); \ |
1011 | init ((base) + (ocur_), (cur) - ocur_); \ |
821 | } |
1012 | } |
822 | |
1013 | |
… | |
… | |
922 | inline_size void |
1113 | inline_size void |
923 | fd_reify (EV_P) |
1114 | fd_reify (EV_P) |
924 | { |
1115 | { |
925 | int i; |
1116 | int i; |
926 | |
1117 | |
|
|
1118 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1119 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1120 | { |
|
|
1121 | int fd = fdchanges [i]; |
|
|
1122 | ANFD *anfd = anfds + fd; |
|
|
1123 | |
|
|
1124 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1125 | { |
|
|
1126 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1127 | |
|
|
1128 | if (handle != anfd->handle) |
|
|
1129 | { |
|
|
1130 | unsigned long arg; |
|
|
1131 | |
|
|
1132 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1133 | |
|
|
1134 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1135 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1136 | anfd->events = 0; |
|
|
1137 | anfd->handle = handle; |
|
|
1138 | } |
|
|
1139 | } |
|
|
1140 | } |
|
|
1141 | #endif |
|
|
1142 | |
927 | for (i = 0; i < fdchangecnt; ++i) |
1143 | for (i = 0; i < fdchangecnt; ++i) |
928 | { |
1144 | { |
929 | int fd = fdchanges [i]; |
1145 | int fd = fdchanges [i]; |
930 | ANFD *anfd = anfds + fd; |
1146 | ANFD *anfd = anfds + fd; |
931 | ev_io *w; |
1147 | ev_io *w; |
932 | |
1148 | |
933 | unsigned char events = 0; |
1149 | unsigned char o_events = anfd->events; |
|
|
1150 | unsigned char o_reify = anfd->reify; |
934 | |
1151 | |
935 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1152 | anfd->reify = 0; |
936 | events |= (unsigned char)w->events; |
|
|
937 | |
1153 | |
938 | #if EV_SELECT_IS_WINSOCKET |
1154 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
939 | if (events) |
|
|
940 | { |
1155 | { |
941 | unsigned long arg; |
1156 | anfd->events = 0; |
942 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
1157 | |
943 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
1158 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1159 | anfd->events |= (unsigned char)w->events; |
|
|
1160 | |
|
|
1161 | if (o_events != anfd->events) |
|
|
1162 | o_reify = EV__IOFDSET; /* actually |= */ |
944 | } |
1163 | } |
945 | #endif |
|
|
946 | |
1164 | |
947 | { |
1165 | 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); |
1166 | backend_modify (EV_A_ fd, o_events, anfd->events); |
956 | } |
|
|
957 | } |
1167 | } |
958 | |
1168 | |
959 | fdchangecnt = 0; |
1169 | fdchangecnt = 0; |
960 | } |
1170 | } |
961 | |
1171 | |
… | |
… | |
973 | fdchanges [fdchangecnt - 1] = fd; |
1183 | fdchanges [fdchangecnt - 1] = fd; |
974 | } |
1184 | } |
975 | } |
1185 | } |
976 | |
1186 | |
977 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1187 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
978 | inline_speed void |
1188 | inline_speed void ecb_cold |
979 | fd_kill (EV_P_ int fd) |
1189 | fd_kill (EV_P_ int fd) |
980 | { |
1190 | { |
981 | ev_io *w; |
1191 | ev_io *w; |
982 | |
1192 | |
983 | while ((w = (ev_io *)anfds [fd].head)) |
1193 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
986 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1196 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
987 | } |
1197 | } |
988 | } |
1198 | } |
989 | |
1199 | |
990 | /* check whether the given fd is actually valid, for error recovery */ |
1200 | /* check whether the given fd is actually valid, for error recovery */ |
991 | inline_size int |
1201 | inline_size int ecb_cold |
992 | fd_valid (int fd) |
1202 | fd_valid (int fd) |
993 | { |
1203 | { |
994 | #ifdef _WIN32 |
1204 | #ifdef _WIN32 |
995 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1205 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
996 | #else |
1206 | #else |
997 | return fcntl (fd, F_GETFD) != -1; |
1207 | return fcntl (fd, F_GETFD) != -1; |
998 | #endif |
1208 | #endif |
999 | } |
1209 | } |
1000 | |
1210 | |
1001 | /* called on EBADF to verify fds */ |
1211 | /* called on EBADF to verify fds */ |
1002 | static void noinline |
1212 | static void noinline ecb_cold |
1003 | fd_ebadf (EV_P) |
1213 | fd_ebadf (EV_P) |
1004 | { |
1214 | { |
1005 | int fd; |
1215 | int fd; |
1006 | |
1216 | |
1007 | for (fd = 0; fd < anfdmax; ++fd) |
1217 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1009 | if (!fd_valid (fd) && errno == EBADF) |
1219 | if (!fd_valid (fd) && errno == EBADF) |
1010 | fd_kill (EV_A_ fd); |
1220 | fd_kill (EV_A_ fd); |
1011 | } |
1221 | } |
1012 | |
1222 | |
1013 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1223 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1014 | static void noinline |
1224 | static void noinline ecb_cold |
1015 | fd_enomem (EV_P) |
1225 | fd_enomem (EV_P) |
1016 | { |
1226 | { |
1017 | int fd; |
1227 | int fd; |
1018 | |
1228 | |
1019 | for (fd = anfdmax; fd--; ) |
1229 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1054 | } |
1264 | } |
1055 | |
1265 | |
1056 | /*****************************************************************************/ |
1266 | /*****************************************************************************/ |
1057 | |
1267 | |
1058 | /* |
1268 | /* |
1059 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
1269 | * 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 |
1270 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1061 | * the branching factor of the d-tree. |
1271 | * the branching factor of the d-tree. |
1062 | */ |
1272 | */ |
1063 | |
1273 | |
1064 | /* |
1274 | /* |
… | |
… | |
1214 | |
1424 | |
1215 | /*****************************************************************************/ |
1425 | /*****************************************************************************/ |
1216 | |
1426 | |
1217 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1427 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1218 | |
1428 | |
1219 | static void noinline |
1429 | static void noinline ecb_cold |
1220 | evpipe_init (EV_P) |
1430 | evpipe_init (EV_P) |
1221 | { |
1431 | { |
1222 | if (!ev_is_active (&pipe_w)) |
1432 | if (!ev_is_active (&pipe_w)) |
1223 | { |
1433 | { |
1224 | # if EV_USE_EVENTFD |
1434 | # if EV_USE_EVENTFD |
… | |
… | |
1246 | ev_io_start (EV_A_ &pipe_w); |
1456 | ev_io_start (EV_A_ &pipe_w); |
1247 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1457 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1248 | } |
1458 | } |
1249 | } |
1459 | } |
1250 | |
1460 | |
1251 | inline_size void |
1461 | inline_speed void |
1252 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1462 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1253 | { |
1463 | { |
1254 | if (!*flag) |
1464 | if (expect_true (*flag)) |
|
|
1465 | return; |
|
|
1466 | |
|
|
1467 | *flag = 1; |
|
|
1468 | |
|
|
1469 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1470 | |
|
|
1471 | pipe_write_skipped = 1; |
|
|
1472 | |
|
|
1473 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1474 | |
|
|
1475 | if (pipe_write_wanted) |
1255 | { |
1476 | { |
|
|
1477 | int old_errno; |
|
|
1478 | |
|
|
1479 | pipe_write_skipped = 0; /* just an optimsiation, no fence needed */ |
|
|
1480 | |
1256 | int old_errno = errno; /* save errno because write might clobber it */ |
1481 | old_errno = errno; /* save errno because write will clobber it */ |
1257 | char dummy; |
|
|
1258 | |
|
|
1259 | *flag = 1; |
|
|
1260 | |
1482 | |
1261 | #if EV_USE_EVENTFD |
1483 | #if EV_USE_EVENTFD |
1262 | if (evfd >= 0) |
1484 | if (evfd >= 0) |
1263 | { |
1485 | { |
1264 | uint64_t counter = 1; |
1486 | uint64_t counter = 1; |
1265 | write (evfd, &counter, sizeof (uint64_t)); |
1487 | write (evfd, &counter, sizeof (uint64_t)); |
1266 | } |
1488 | } |
1267 | else |
1489 | else |
1268 | #endif |
1490 | #endif |
|
|
1491 | { |
|
|
1492 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1493 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1494 | /* so when you think this write should be a send instead, please find out */ |
|
|
1495 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1496 | /* tell me. thank you. */ |
1269 | write (evpipe [1], &dummy, 1); |
1497 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1498 | } |
1270 | |
1499 | |
1271 | errno = old_errno; |
1500 | errno = old_errno; |
1272 | } |
1501 | } |
1273 | } |
1502 | } |
1274 | |
1503 | |
… | |
… | |
1277 | static void |
1506 | static void |
1278 | pipecb (EV_P_ ev_io *iow, int revents) |
1507 | pipecb (EV_P_ ev_io *iow, int revents) |
1279 | { |
1508 | { |
1280 | int i; |
1509 | int i; |
1281 | |
1510 | |
|
|
1511 | if (revents & EV_READ) |
|
|
1512 | { |
1282 | #if EV_USE_EVENTFD |
1513 | #if EV_USE_EVENTFD |
1283 | if (evfd >= 0) |
1514 | if (evfd >= 0) |
1284 | { |
1515 | { |
1285 | uint64_t counter; |
1516 | uint64_t counter; |
1286 | read (evfd, &counter, sizeof (uint64_t)); |
1517 | read (evfd, &counter, sizeof (uint64_t)); |
1287 | } |
1518 | } |
1288 | else |
1519 | else |
1289 | #endif |
1520 | #endif |
1290 | { |
1521 | { |
1291 | char dummy; |
1522 | char dummy; |
|
|
1523 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1292 | read (evpipe [0], &dummy, 1); |
1524 | read (evpipe [0], &dummy, 1); |
|
|
1525 | } |
1293 | } |
1526 | } |
1294 | |
1527 | |
|
|
1528 | pipe_write_skipped = 0; |
|
|
1529 | |
|
|
1530 | #if EV_SIGNAL_ENABLE |
1295 | if (sig_pending) |
1531 | if (sig_pending) |
1296 | { |
1532 | { |
1297 | sig_pending = 0; |
1533 | sig_pending = 0; |
1298 | |
1534 | |
1299 | for (i = EV_NSIG - 1; i--; ) |
1535 | for (i = EV_NSIG - 1; i--; ) |
1300 | if (expect_false (signals [i].pending)) |
1536 | if (expect_false (signals [i].pending)) |
1301 | ev_feed_signal_event (EV_A_ i + 1); |
1537 | ev_feed_signal_event (EV_A_ i + 1); |
1302 | } |
1538 | } |
|
|
1539 | #endif |
1303 | |
1540 | |
1304 | #if EV_ASYNC_ENABLE |
1541 | #if EV_ASYNC_ENABLE |
1305 | if (async_pending) |
1542 | if (async_pending) |
1306 | { |
1543 | { |
1307 | async_pending = 0; |
1544 | async_pending = 0; |
… | |
… | |
1316 | #endif |
1553 | #endif |
1317 | } |
1554 | } |
1318 | |
1555 | |
1319 | /*****************************************************************************/ |
1556 | /*****************************************************************************/ |
1320 | |
1557 | |
|
|
1558 | void |
|
|
1559 | ev_feed_signal (int signum) |
|
|
1560 | { |
|
|
1561 | #if EV_MULTIPLICITY |
|
|
1562 | EV_P = signals [signum - 1].loop; |
|
|
1563 | |
|
|
1564 | if (!EV_A) |
|
|
1565 | return; |
|
|
1566 | #endif |
|
|
1567 | |
|
|
1568 | if (!ev_active (&pipe_w)) |
|
|
1569 | return; |
|
|
1570 | |
|
|
1571 | signals [signum - 1].pending = 1; |
|
|
1572 | evpipe_write (EV_A_ &sig_pending); |
|
|
1573 | } |
|
|
1574 | |
1321 | static void |
1575 | static void |
1322 | ev_sighandler (int signum) |
1576 | ev_sighandler (int signum) |
1323 | { |
1577 | { |
1324 | #if EV_MULTIPLICITY |
|
|
1325 | EV_P = signals [signum - 1].loop; |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | #ifdef _WIN32 |
1578 | #ifdef _WIN32 |
1329 | signal (signum, ev_sighandler); |
1579 | signal (signum, ev_sighandler); |
1330 | #endif |
1580 | #endif |
1331 | |
1581 | |
1332 | signals [signum - 1].pending = 1; |
1582 | ev_feed_signal (signum); |
1333 | evpipe_write (EV_A_ &sig_pending); |
|
|
1334 | } |
1583 | } |
1335 | |
1584 | |
1336 | void noinline |
1585 | void noinline |
1337 | ev_feed_signal_event (EV_P_ int signum) |
1586 | ev_feed_signal_event (EV_P_ int signum) |
1338 | { |
1587 | { |
… | |
… | |
1438 | |
1687 | |
1439 | #endif |
1688 | #endif |
1440 | |
1689 | |
1441 | /*****************************************************************************/ |
1690 | /*****************************************************************************/ |
1442 | |
1691 | |
|
|
1692 | #if EV_USE_IOCP |
|
|
1693 | # include "ev_iocp.c" |
|
|
1694 | #endif |
1443 | #if EV_USE_PORT |
1695 | #if EV_USE_PORT |
1444 | # include "ev_port.c" |
1696 | # include "ev_port.c" |
1445 | #endif |
1697 | #endif |
1446 | #if EV_USE_KQUEUE |
1698 | #if EV_USE_KQUEUE |
1447 | # include "ev_kqueue.c" |
1699 | # include "ev_kqueue.c" |
… | |
… | |
1454 | #endif |
1706 | #endif |
1455 | #if EV_USE_SELECT |
1707 | #if EV_USE_SELECT |
1456 | # include "ev_select.c" |
1708 | # include "ev_select.c" |
1457 | #endif |
1709 | #endif |
1458 | |
1710 | |
1459 | int |
1711 | int ecb_cold |
1460 | ev_version_major (void) |
1712 | ev_version_major (void) |
1461 | { |
1713 | { |
1462 | return EV_VERSION_MAJOR; |
1714 | return EV_VERSION_MAJOR; |
1463 | } |
1715 | } |
1464 | |
1716 | |
1465 | int |
1717 | int ecb_cold |
1466 | ev_version_minor (void) |
1718 | ev_version_minor (void) |
1467 | { |
1719 | { |
1468 | return EV_VERSION_MINOR; |
1720 | return EV_VERSION_MINOR; |
1469 | } |
1721 | } |
1470 | |
1722 | |
1471 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1723 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1472 | int inline_size |
1724 | int inline_size ecb_cold |
1473 | enable_secure (void) |
1725 | enable_secure (void) |
1474 | { |
1726 | { |
1475 | #ifdef _WIN32 |
1727 | #ifdef _WIN32 |
1476 | return 0; |
1728 | return 0; |
1477 | #else |
1729 | #else |
1478 | return getuid () != geteuid () |
1730 | return getuid () != geteuid () |
1479 | || getgid () != getegid (); |
1731 | || getgid () != getegid (); |
1480 | #endif |
1732 | #endif |
1481 | } |
1733 | } |
1482 | |
1734 | |
1483 | unsigned int |
1735 | unsigned int ecb_cold |
1484 | ev_supported_backends (void) |
1736 | ev_supported_backends (void) |
1485 | { |
1737 | { |
1486 | unsigned int flags = 0; |
1738 | unsigned int flags = 0; |
1487 | |
1739 | |
1488 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1740 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1492 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1744 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1493 | |
1745 | |
1494 | return flags; |
1746 | return flags; |
1495 | } |
1747 | } |
1496 | |
1748 | |
1497 | unsigned int |
1749 | unsigned int ecb_cold |
1498 | ev_recommended_backends (void) |
1750 | ev_recommended_backends (void) |
1499 | { |
1751 | { |
1500 | unsigned int flags = ev_supported_backends (); |
1752 | unsigned int flags = ev_supported_backends (); |
1501 | |
1753 | |
1502 | #ifndef __NetBSD__ |
1754 | #ifndef __NetBSD__ |
… | |
… | |
1507 | #ifdef __APPLE__ |
1759 | #ifdef __APPLE__ |
1508 | /* only select works correctly on that "unix-certified" platform */ |
1760 | /* only select works correctly on that "unix-certified" platform */ |
1509 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1761 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1510 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1762 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1511 | #endif |
1763 | #endif |
|
|
1764 | #ifdef __FreeBSD__ |
|
|
1765 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
1766 | #endif |
1512 | |
1767 | |
1513 | return flags; |
1768 | return flags; |
1514 | } |
1769 | } |
1515 | |
1770 | |
1516 | unsigned int |
1771 | unsigned int ecb_cold |
1517 | ev_embeddable_backends (void) |
1772 | ev_embeddable_backends (void) |
1518 | { |
1773 | { |
1519 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1774 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1520 | |
1775 | |
1521 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1776 | /* 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 */ |
1777 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1523 | flags &= ~EVBACKEND_EPOLL; |
1778 | flags &= ~EVBACKEND_EPOLL; |
1524 | |
1779 | |
1525 | return flags; |
1780 | return flags; |
1526 | } |
1781 | } |
1527 | |
1782 | |
1528 | unsigned int |
1783 | unsigned int |
… | |
… | |
1531 | return backend; |
1786 | return backend; |
1532 | } |
1787 | } |
1533 | |
1788 | |
1534 | #if EV_FEATURE_API |
1789 | #if EV_FEATURE_API |
1535 | unsigned int |
1790 | unsigned int |
1536 | ev_loop_count (EV_P) |
1791 | ev_iteration (EV_P) |
1537 | { |
1792 | { |
1538 | return loop_count; |
1793 | return loop_count; |
1539 | } |
1794 | } |
1540 | |
1795 | |
1541 | unsigned int |
1796 | unsigned int |
1542 | ev_loop_depth (EV_P) |
1797 | ev_depth (EV_P) |
1543 | { |
1798 | { |
1544 | return loop_depth; |
1799 | return loop_depth; |
1545 | } |
1800 | } |
1546 | |
1801 | |
1547 | void |
1802 | void |
… | |
… | |
1566 | ev_userdata (EV_P) |
1821 | ev_userdata (EV_P) |
1567 | { |
1822 | { |
1568 | return userdata; |
1823 | return userdata; |
1569 | } |
1824 | } |
1570 | |
1825 | |
|
|
1826 | void |
1571 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1827 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1572 | { |
1828 | { |
1573 | invoke_cb = invoke_pending_cb; |
1829 | invoke_cb = invoke_pending_cb; |
1574 | } |
1830 | } |
1575 | |
1831 | |
|
|
1832 | void |
1576 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1833 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1577 | { |
1834 | { |
1578 | release_cb = release; |
1835 | release_cb = release; |
1579 | acquire_cb = acquire; |
1836 | acquire_cb = acquire; |
1580 | } |
1837 | } |
1581 | #endif |
1838 | #endif |
1582 | |
1839 | |
1583 | /* initialise a loop structure, must be zero-initialised */ |
1840 | /* initialise a loop structure, must be zero-initialised */ |
1584 | static void noinline |
1841 | static void noinline ecb_cold |
1585 | loop_init (EV_P_ unsigned int flags) |
1842 | loop_init (EV_P_ unsigned int flags) |
1586 | { |
1843 | { |
1587 | if (!backend) |
1844 | if (!backend) |
1588 | { |
1845 | { |
|
|
1846 | origflags = flags; |
|
|
1847 | |
1589 | #if EV_USE_REALTIME |
1848 | #if EV_USE_REALTIME |
1590 | if (!have_realtime) |
1849 | if (!have_realtime) |
1591 | { |
1850 | { |
1592 | struct timespec ts; |
1851 | struct timespec ts; |
1593 | |
1852 | |
… | |
… | |
1615 | if (!(flags & EVFLAG_NOENV) |
1874 | if (!(flags & EVFLAG_NOENV) |
1616 | && !enable_secure () |
1875 | && !enable_secure () |
1617 | && getenv ("LIBEV_FLAGS")) |
1876 | && getenv ("LIBEV_FLAGS")) |
1618 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1877 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1619 | |
1878 | |
1620 | ev_rt_now = ev_time (); |
1879 | ev_rt_now = ev_time (); |
1621 | mn_now = get_clock (); |
1880 | mn_now = get_clock (); |
1622 | now_floor = mn_now; |
1881 | now_floor = mn_now; |
1623 | rtmn_diff = ev_rt_now - mn_now; |
1882 | rtmn_diff = ev_rt_now - mn_now; |
1624 | #if EV_FEATURE_API |
1883 | #if EV_FEATURE_API |
1625 | invoke_cb = ev_invoke_pending; |
1884 | invoke_cb = ev_invoke_pending; |
1626 | #endif |
1885 | #endif |
1627 | |
1886 | |
1628 | io_blocktime = 0.; |
1887 | io_blocktime = 0.; |
1629 | timeout_blocktime = 0.; |
1888 | timeout_blocktime = 0.; |
1630 | backend = 0; |
1889 | backend = 0; |
1631 | backend_fd = -1; |
1890 | backend_fd = -1; |
1632 | sig_pending = 0; |
1891 | sig_pending = 0; |
1633 | #if EV_ASYNC_ENABLE |
1892 | #if EV_ASYNC_ENABLE |
1634 | async_pending = 0; |
1893 | async_pending = 0; |
1635 | #endif |
1894 | #endif |
|
|
1895 | pipe_write_skipped = 0; |
|
|
1896 | pipe_write_wanted = 0; |
1636 | #if EV_USE_INOTIFY |
1897 | #if EV_USE_INOTIFY |
1637 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1898 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1638 | #endif |
1899 | #endif |
1639 | #if EV_USE_SIGNALFD |
1900 | #if EV_USE_SIGNALFD |
1640 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1901 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1641 | #endif |
1902 | #endif |
1642 | |
1903 | |
1643 | if (!(flags & 0x0000ffffU)) |
1904 | if (!(flags & EVBACKEND_MASK)) |
1644 | flags |= ev_recommended_backends (); |
1905 | flags |= ev_recommended_backends (); |
1645 | |
1906 | |
|
|
1907 | #if EV_USE_IOCP |
|
|
1908 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1909 | #endif |
1646 | #if EV_USE_PORT |
1910 | #if EV_USE_PORT |
1647 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1911 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1648 | #endif |
1912 | #endif |
1649 | #if EV_USE_KQUEUE |
1913 | #if EV_USE_KQUEUE |
1650 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1914 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1667 | #endif |
1931 | #endif |
1668 | } |
1932 | } |
1669 | } |
1933 | } |
1670 | |
1934 | |
1671 | /* free up a loop structure */ |
1935 | /* free up a loop structure */ |
1672 | static void noinline |
1936 | void ecb_cold |
1673 | loop_destroy (EV_P) |
1937 | ev_loop_destroy (EV_P) |
1674 | { |
1938 | { |
1675 | int i; |
1939 | int i; |
|
|
1940 | |
|
|
1941 | #if EV_MULTIPLICITY |
|
|
1942 | /* mimic free (0) */ |
|
|
1943 | if (!EV_A) |
|
|
1944 | return; |
|
|
1945 | #endif |
|
|
1946 | |
|
|
1947 | #if EV_CLEANUP_ENABLE |
|
|
1948 | /* queue cleanup watchers (and execute them) */ |
|
|
1949 | if (expect_false (cleanupcnt)) |
|
|
1950 | { |
|
|
1951 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1952 | EV_INVOKE_PENDING; |
|
|
1953 | } |
|
|
1954 | #endif |
|
|
1955 | |
|
|
1956 | #if EV_CHILD_ENABLE |
|
|
1957 | if (ev_is_active (&childev)) |
|
|
1958 | { |
|
|
1959 | ev_ref (EV_A); /* child watcher */ |
|
|
1960 | ev_signal_stop (EV_A_ &childev); |
|
|
1961 | } |
|
|
1962 | #endif |
1676 | |
1963 | |
1677 | if (ev_is_active (&pipe_w)) |
1964 | if (ev_is_active (&pipe_w)) |
1678 | { |
1965 | { |
1679 | /*ev_ref (EV_A);*/ |
1966 | /*ev_ref (EV_A);*/ |
1680 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1967 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1702 | #endif |
1989 | #endif |
1703 | |
1990 | |
1704 | if (backend_fd >= 0) |
1991 | if (backend_fd >= 0) |
1705 | close (backend_fd); |
1992 | close (backend_fd); |
1706 | |
1993 | |
|
|
1994 | #if EV_USE_IOCP |
|
|
1995 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1996 | #endif |
1707 | #if EV_USE_PORT |
1997 | #if EV_USE_PORT |
1708 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1998 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1709 | #endif |
1999 | #endif |
1710 | #if EV_USE_KQUEUE |
2000 | #if EV_USE_KQUEUE |
1711 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
2001 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1738 | array_free (periodic, EMPTY); |
2028 | array_free (periodic, EMPTY); |
1739 | #endif |
2029 | #endif |
1740 | #if EV_FORK_ENABLE |
2030 | #if EV_FORK_ENABLE |
1741 | array_free (fork, EMPTY); |
2031 | array_free (fork, EMPTY); |
1742 | #endif |
2032 | #endif |
|
|
2033 | #if EV_CLEANUP_ENABLE |
|
|
2034 | array_free (cleanup, EMPTY); |
|
|
2035 | #endif |
1743 | array_free (prepare, EMPTY); |
2036 | array_free (prepare, EMPTY); |
1744 | array_free (check, EMPTY); |
2037 | array_free (check, EMPTY); |
1745 | #if EV_ASYNC_ENABLE |
2038 | #if EV_ASYNC_ENABLE |
1746 | array_free (async, EMPTY); |
2039 | array_free (async, EMPTY); |
1747 | #endif |
2040 | #endif |
1748 | |
2041 | |
1749 | backend = 0; |
2042 | backend = 0; |
|
|
2043 | |
|
|
2044 | #if EV_MULTIPLICITY |
|
|
2045 | if (ev_is_default_loop (EV_A)) |
|
|
2046 | #endif |
|
|
2047 | ev_default_loop_ptr = 0; |
|
|
2048 | #if EV_MULTIPLICITY |
|
|
2049 | else |
|
|
2050 | ev_free (EV_A); |
|
|
2051 | #endif |
1750 | } |
2052 | } |
1751 | |
2053 | |
1752 | #if EV_USE_INOTIFY |
2054 | #if EV_USE_INOTIFY |
1753 | inline_size void infy_fork (EV_P); |
2055 | inline_size void infy_fork (EV_P); |
1754 | #endif |
2056 | #endif |
… | |
… | |
1769 | infy_fork (EV_A); |
2071 | infy_fork (EV_A); |
1770 | #endif |
2072 | #endif |
1771 | |
2073 | |
1772 | if (ev_is_active (&pipe_w)) |
2074 | if (ev_is_active (&pipe_w)) |
1773 | { |
2075 | { |
1774 | /* this "locks" the handlers against writing to the pipe */ |
2076 | /* 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 | |
2077 | |
1781 | ev_ref (EV_A); |
2078 | ev_ref (EV_A); |
1782 | ev_io_stop (EV_A_ &pipe_w); |
2079 | ev_io_stop (EV_A_ &pipe_w); |
1783 | |
2080 | |
1784 | #if EV_USE_EVENTFD |
2081 | #if EV_USE_EVENTFD |
… | |
… | |
1802 | postfork = 0; |
2099 | postfork = 0; |
1803 | } |
2100 | } |
1804 | |
2101 | |
1805 | #if EV_MULTIPLICITY |
2102 | #if EV_MULTIPLICITY |
1806 | |
2103 | |
1807 | struct ev_loop * |
2104 | struct ev_loop * ecb_cold |
1808 | ev_loop_new (unsigned int flags) |
2105 | ev_loop_new (unsigned int flags) |
1809 | { |
2106 | { |
1810 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2107 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1811 | |
2108 | |
1812 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2109 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1813 | loop_init (EV_A_ flags); |
2110 | loop_init (EV_A_ flags); |
1814 | |
2111 | |
1815 | if (ev_backend (EV_A)) |
2112 | if (ev_backend (EV_A)) |
1816 | return EV_A; |
2113 | return EV_A; |
1817 | |
2114 | |
|
|
2115 | ev_free (EV_A); |
1818 | return 0; |
2116 | return 0; |
1819 | } |
2117 | } |
1820 | |
2118 | |
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 */ |
2119 | #endif /* multiplicity */ |
1834 | |
2120 | |
1835 | #if EV_VERIFY |
2121 | #if EV_VERIFY |
1836 | static void noinline |
2122 | static void noinline ecb_cold |
1837 | verify_watcher (EV_P_ W w) |
2123 | verify_watcher (EV_P_ W w) |
1838 | { |
2124 | { |
1839 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2125 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1840 | |
2126 | |
1841 | if (w->pending) |
2127 | if (w->pending) |
1842 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2128 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1843 | } |
2129 | } |
1844 | |
2130 | |
1845 | static void noinline |
2131 | static void noinline ecb_cold |
1846 | verify_heap (EV_P_ ANHE *heap, int N) |
2132 | verify_heap (EV_P_ ANHE *heap, int N) |
1847 | { |
2133 | { |
1848 | int i; |
2134 | int i; |
1849 | |
2135 | |
1850 | for (i = HEAP0; i < N + HEAP0; ++i) |
2136 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1855 | |
2141 | |
1856 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2142 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1857 | } |
2143 | } |
1858 | } |
2144 | } |
1859 | |
2145 | |
1860 | static void noinline |
2146 | static void noinline ecb_cold |
1861 | array_verify (EV_P_ W *ws, int cnt) |
2147 | array_verify (EV_P_ W *ws, int cnt) |
1862 | { |
2148 | { |
1863 | while (cnt--) |
2149 | while (cnt--) |
1864 | { |
2150 | { |
1865 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2151 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1867 | } |
2153 | } |
1868 | } |
2154 | } |
1869 | #endif |
2155 | #endif |
1870 | |
2156 | |
1871 | #if EV_FEATURE_API |
2157 | #if EV_FEATURE_API |
1872 | void |
2158 | void ecb_cold |
1873 | ev_loop_verify (EV_P) |
2159 | ev_verify (EV_P) |
1874 | { |
2160 | { |
1875 | #if EV_VERIFY |
2161 | #if EV_VERIFY |
1876 | int i; |
2162 | int i; |
1877 | WL w; |
2163 | WL w; |
1878 | |
2164 | |
… | |
… | |
1912 | #if EV_FORK_ENABLE |
2198 | #if EV_FORK_ENABLE |
1913 | assert (forkmax >= forkcnt); |
2199 | assert (forkmax >= forkcnt); |
1914 | array_verify (EV_A_ (W *)forks, forkcnt); |
2200 | array_verify (EV_A_ (W *)forks, forkcnt); |
1915 | #endif |
2201 | #endif |
1916 | |
2202 | |
|
|
2203 | #if EV_CLEANUP_ENABLE |
|
|
2204 | assert (cleanupmax >= cleanupcnt); |
|
|
2205 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2206 | #endif |
|
|
2207 | |
1917 | #if EV_ASYNC_ENABLE |
2208 | #if EV_ASYNC_ENABLE |
1918 | assert (asyncmax >= asynccnt); |
2209 | assert (asyncmax >= asynccnt); |
1919 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2210 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1920 | #endif |
2211 | #endif |
1921 | |
2212 | |
… | |
… | |
1938 | #endif |
2229 | #endif |
1939 | } |
2230 | } |
1940 | #endif |
2231 | #endif |
1941 | |
2232 | |
1942 | #if EV_MULTIPLICITY |
2233 | #if EV_MULTIPLICITY |
1943 | struct ev_loop * |
2234 | struct ev_loop * ecb_cold |
1944 | ev_default_loop_init (unsigned int flags) |
|
|
1945 | #else |
2235 | #else |
1946 | int |
2236 | int |
|
|
2237 | #endif |
1947 | ev_default_loop (unsigned int flags) |
2238 | ev_default_loop (unsigned int flags) |
1948 | #endif |
|
|
1949 | { |
2239 | { |
1950 | if (!ev_default_loop_ptr) |
2240 | if (!ev_default_loop_ptr) |
1951 | { |
2241 | { |
1952 | #if EV_MULTIPLICITY |
2242 | #if EV_MULTIPLICITY |
1953 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2243 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1972 | |
2262 | |
1973 | return ev_default_loop_ptr; |
2263 | return ev_default_loop_ptr; |
1974 | } |
2264 | } |
1975 | |
2265 | |
1976 | void |
2266 | void |
1977 | ev_default_destroy (void) |
2267 | ev_loop_fork (EV_P) |
1978 | { |
2268 | { |
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 */ |
2269 | postfork = 1; /* must be in line with ev_default_fork */ |
2001 | } |
2270 | } |
2002 | |
2271 | |
2003 | /*****************************************************************************/ |
2272 | /*****************************************************************************/ |
2004 | |
2273 | |
2005 | void |
2274 | void |
… | |
… | |
2027 | |
2296 | |
2028 | for (pri = NUMPRI; pri--; ) |
2297 | for (pri = NUMPRI; pri--; ) |
2029 | while (pendingcnt [pri]) |
2298 | while (pendingcnt [pri]) |
2030 | { |
2299 | { |
2031 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2300 | 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 | |
2301 | |
2036 | p->w->pending = 0; |
2302 | p->w->pending = 0; |
2037 | EV_CB_INVOKE (p->w, p->events); |
2303 | EV_CB_INVOKE (p->w, p->events); |
2038 | EV_FREQUENT_CHECK; |
2304 | EV_FREQUENT_CHECK; |
2039 | } |
2305 | } |
… | |
… | |
2096 | EV_FREQUENT_CHECK; |
2362 | EV_FREQUENT_CHECK; |
2097 | feed_reverse (EV_A_ (W)w); |
2363 | feed_reverse (EV_A_ (W)w); |
2098 | } |
2364 | } |
2099 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2365 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2100 | |
2366 | |
2101 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
2367 | feed_reverse_done (EV_A_ EV_TIMER); |
2102 | } |
2368 | } |
2103 | } |
2369 | } |
2104 | |
2370 | |
2105 | #if EV_PERIODIC_ENABLE |
2371 | #if EV_PERIODIC_ENABLE |
|
|
2372 | |
|
|
2373 | static void noinline |
|
|
2374 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2375 | { |
|
|
2376 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2377 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2378 | |
|
|
2379 | /* the above almost always errs on the low side */ |
|
|
2380 | while (at <= ev_rt_now) |
|
|
2381 | { |
|
|
2382 | ev_tstamp nat = at + w->interval; |
|
|
2383 | |
|
|
2384 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2385 | if (expect_false (nat == at)) |
|
|
2386 | { |
|
|
2387 | at = ev_rt_now; |
|
|
2388 | break; |
|
|
2389 | } |
|
|
2390 | |
|
|
2391 | at = nat; |
|
|
2392 | } |
|
|
2393 | |
|
|
2394 | ev_at (w) = at; |
|
|
2395 | } |
|
|
2396 | |
2106 | /* make periodics pending */ |
2397 | /* make periodics pending */ |
2107 | inline_size void |
2398 | inline_size void |
2108 | periodics_reify (EV_P) |
2399 | periodics_reify (EV_P) |
2109 | { |
2400 | { |
2110 | EV_FREQUENT_CHECK; |
2401 | EV_FREQUENT_CHECK; |
… | |
… | |
2129 | ANHE_at_cache (periodics [HEAP0]); |
2420 | ANHE_at_cache (periodics [HEAP0]); |
2130 | downheap (periodics, periodiccnt, HEAP0); |
2421 | downheap (periodics, periodiccnt, HEAP0); |
2131 | } |
2422 | } |
2132 | else if (w->interval) |
2423 | else if (w->interval) |
2133 | { |
2424 | { |
2134 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2425 | 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]); |
2426 | ANHE_at_cache (periodics [HEAP0]); |
2149 | downheap (periodics, periodiccnt, HEAP0); |
2427 | downheap (periodics, periodiccnt, HEAP0); |
2150 | } |
2428 | } |
2151 | else |
2429 | else |
2152 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2430 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2159 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2437 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2160 | } |
2438 | } |
2161 | } |
2439 | } |
2162 | |
2440 | |
2163 | /* simply recalculate all periodics */ |
2441 | /* simply recalculate all periodics */ |
2164 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
2442 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2165 | static void noinline |
2443 | static void noinline ecb_cold |
2166 | periodics_reschedule (EV_P) |
2444 | periodics_reschedule (EV_P) |
2167 | { |
2445 | { |
2168 | int i; |
2446 | int i; |
2169 | |
2447 | |
2170 | /* adjust periodics after time jump */ |
2448 | /* adjust periodics after time jump */ |
… | |
… | |
2173 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2451 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2174 | |
2452 | |
2175 | if (w->reschedule_cb) |
2453 | if (w->reschedule_cb) |
2176 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2454 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2177 | else if (w->interval) |
2455 | else if (w->interval) |
2178 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2456 | periodic_recalc (EV_A_ w); |
2179 | |
2457 | |
2180 | ANHE_at_cache (periodics [i]); |
2458 | ANHE_at_cache (periodics [i]); |
2181 | } |
2459 | } |
2182 | |
2460 | |
2183 | reheap (periodics, periodiccnt); |
2461 | reheap (periodics, periodiccnt); |
2184 | } |
2462 | } |
2185 | #endif |
2463 | #endif |
2186 | |
2464 | |
2187 | /* adjust all timers by a given offset */ |
2465 | /* adjust all timers by a given offset */ |
2188 | static void noinline |
2466 | static void noinline ecb_cold |
2189 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2467 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2190 | { |
2468 | { |
2191 | int i; |
2469 | int i; |
2192 | |
2470 | |
2193 | for (i = 0; i < timercnt; ++i) |
2471 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2230 | * doesn't hurt either as we only do this on time-jumps or |
2508 | * doesn't hurt either as we only do this on time-jumps or |
2231 | * in the unlikely event of having been preempted here. |
2509 | * in the unlikely event of having been preempted here. |
2232 | */ |
2510 | */ |
2233 | for (i = 4; --i; ) |
2511 | for (i = 4; --i; ) |
2234 | { |
2512 | { |
|
|
2513 | ev_tstamp diff; |
2235 | rtmn_diff = ev_rt_now - mn_now; |
2514 | rtmn_diff = ev_rt_now - mn_now; |
2236 | |
2515 | |
|
|
2516 | diff = odiff - rtmn_diff; |
|
|
2517 | |
2237 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2518 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2238 | return; /* all is well */ |
2519 | return; /* all is well */ |
2239 | |
2520 | |
2240 | ev_rt_now = ev_time (); |
2521 | ev_rt_now = ev_time (); |
2241 | mn_now = get_clock (); |
2522 | mn_now = get_clock (); |
2242 | now_floor = mn_now; |
2523 | now_floor = mn_now; |
… | |
… | |
2265 | mn_now = ev_rt_now; |
2546 | mn_now = ev_rt_now; |
2266 | } |
2547 | } |
2267 | } |
2548 | } |
2268 | |
2549 | |
2269 | void |
2550 | void |
2270 | ev_loop (EV_P_ int flags) |
2551 | ev_run (EV_P_ int flags) |
2271 | { |
2552 | { |
2272 | #if EV_FEATURE_API |
2553 | #if EV_FEATURE_API |
2273 | ++loop_depth; |
2554 | ++loop_depth; |
2274 | #endif |
2555 | #endif |
2275 | |
2556 | |
2276 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2557 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2277 | |
2558 | |
2278 | loop_done = EVUNLOOP_CANCEL; |
2559 | loop_done = EVBREAK_CANCEL; |
2279 | |
2560 | |
2280 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2561 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2281 | |
2562 | |
2282 | do |
2563 | do |
2283 | { |
2564 | { |
2284 | #if EV_VERIFY >= 2 |
2565 | #if EV_VERIFY >= 2 |
2285 | ev_loop_verify (EV_A); |
2566 | ev_verify (EV_A); |
2286 | #endif |
2567 | #endif |
2287 | |
2568 | |
2288 | #ifndef _WIN32 |
2569 | #ifndef _WIN32 |
2289 | if (expect_false (curpid)) /* penalise the forking check even more */ |
2570 | if (expect_false (curpid)) /* penalise the forking check even more */ |
2290 | if (expect_false (getpid () != curpid)) |
2571 | if (expect_false (getpid () != curpid)) |
… | |
… | |
2326 | /* calculate blocking time */ |
2607 | /* calculate blocking time */ |
2327 | { |
2608 | { |
2328 | ev_tstamp waittime = 0.; |
2609 | ev_tstamp waittime = 0.; |
2329 | ev_tstamp sleeptime = 0.; |
2610 | ev_tstamp sleeptime = 0.; |
2330 | |
2611 | |
|
|
2612 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2613 | ev_tstamp prev_mn_now = mn_now; |
|
|
2614 | |
|
|
2615 | /* update time to cancel out callback processing overhead */ |
|
|
2616 | time_update (EV_A_ 1e100); |
|
|
2617 | |
|
|
2618 | /* from now on, we want a pipe-wake-up */ |
|
|
2619 | pipe_write_wanted = 1; |
|
|
2620 | |
|
|
2621 | ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2622 | |
2331 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
2623 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2332 | { |
2624 | { |
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; |
2625 | waittime = MAX_BLOCKTIME; |
2340 | |
2626 | |
2341 | if (timercnt) |
2627 | if (timercnt) |
2342 | { |
2628 | { |
2343 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2629 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2344 | if (waittime > to) waittime = to; |
2630 | if (waittime > to) waittime = to; |
2345 | } |
2631 | } |
2346 | |
2632 | |
2347 | #if EV_PERIODIC_ENABLE |
2633 | #if EV_PERIODIC_ENABLE |
2348 | if (periodiccnt) |
2634 | if (periodiccnt) |
2349 | { |
2635 | { |
2350 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2636 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2351 | if (waittime > to) waittime = to; |
2637 | if (waittime > to) waittime = to; |
2352 | } |
2638 | } |
2353 | #endif |
2639 | #endif |
2354 | |
2640 | |
2355 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2641 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2356 | if (expect_false (waittime < timeout_blocktime)) |
2642 | if (expect_false (waittime < timeout_blocktime)) |
2357 | waittime = timeout_blocktime; |
2643 | waittime = timeout_blocktime; |
|
|
2644 | |
|
|
2645 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2646 | /* to pass a minimum nonzero value to the backend */ |
|
|
2647 | if (expect_false (waittime < backend_mintime)) |
|
|
2648 | waittime = backend_mintime; |
2358 | |
2649 | |
2359 | /* extra check because io_blocktime is commonly 0 */ |
2650 | /* extra check because io_blocktime is commonly 0 */ |
2360 | if (expect_false (io_blocktime)) |
2651 | if (expect_false (io_blocktime)) |
2361 | { |
2652 | { |
2362 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2653 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2363 | |
2654 | |
2364 | if (sleeptime > waittime - backend_fudge) |
2655 | if (sleeptime > waittime - backend_mintime) |
2365 | sleeptime = waittime - backend_fudge; |
2656 | sleeptime = waittime - backend_mintime; |
2366 | |
2657 | |
2367 | if (expect_true (sleeptime > 0.)) |
2658 | if (expect_true (sleeptime > 0.)) |
2368 | { |
2659 | { |
2369 | ev_sleep (sleeptime); |
2660 | ev_sleep (sleeptime); |
2370 | waittime -= sleeptime; |
2661 | waittime -= sleeptime; |
… | |
… | |
2373 | } |
2664 | } |
2374 | |
2665 | |
2375 | #if EV_FEATURE_API |
2666 | #if EV_FEATURE_API |
2376 | ++loop_count; |
2667 | ++loop_count; |
2377 | #endif |
2668 | #endif |
2378 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2669 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2379 | backend_poll (EV_A_ waittime); |
2670 | backend_poll (EV_A_ waittime); |
2380 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2671 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2672 | |
|
|
2673 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2674 | |
|
|
2675 | if (pipe_write_skipped) |
|
|
2676 | { |
|
|
2677 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2678 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2679 | } |
|
|
2680 | |
2381 | |
2681 | |
2382 | /* update ev_rt_now, do magic */ |
2682 | /* update ev_rt_now, do magic */ |
2383 | time_update (EV_A_ waittime + sleeptime); |
2683 | time_update (EV_A_ waittime + sleeptime); |
2384 | } |
2684 | } |
2385 | |
2685 | |
… | |
… | |
2403 | EV_INVOKE_PENDING; |
2703 | EV_INVOKE_PENDING; |
2404 | } |
2704 | } |
2405 | while (expect_true ( |
2705 | while (expect_true ( |
2406 | activecnt |
2706 | activecnt |
2407 | && !loop_done |
2707 | && !loop_done |
2408 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2708 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2409 | )); |
2709 | )); |
2410 | |
2710 | |
2411 | if (loop_done == EVUNLOOP_ONE) |
2711 | if (loop_done == EVBREAK_ONE) |
2412 | loop_done = EVUNLOOP_CANCEL; |
2712 | loop_done = EVBREAK_CANCEL; |
2413 | |
2713 | |
2414 | #if EV_FEATURE_API |
2714 | #if EV_FEATURE_API |
2415 | --loop_depth; |
2715 | --loop_depth; |
2416 | #endif |
2716 | #endif |
2417 | } |
2717 | } |
2418 | |
2718 | |
2419 | void |
2719 | void |
2420 | ev_unloop (EV_P_ int how) |
2720 | ev_break (EV_P_ int how) |
2421 | { |
2721 | { |
2422 | loop_done = how; |
2722 | loop_done = how; |
2423 | } |
2723 | } |
2424 | |
2724 | |
2425 | void |
2725 | void |
… | |
… | |
2573 | EV_FREQUENT_CHECK; |
2873 | EV_FREQUENT_CHECK; |
2574 | |
2874 | |
2575 | wlist_del (&anfds[w->fd].head, (WL)w); |
2875 | wlist_del (&anfds[w->fd].head, (WL)w); |
2576 | ev_stop (EV_A_ (W)w); |
2876 | ev_stop (EV_A_ (W)w); |
2577 | |
2877 | |
2578 | fd_change (EV_A_ w->fd, 1); |
2878 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2579 | |
2879 | |
2580 | EV_FREQUENT_CHECK; |
2880 | EV_FREQUENT_CHECK; |
2581 | } |
2881 | } |
2582 | |
2882 | |
2583 | void noinline |
2883 | void noinline |
… | |
… | |
2675 | if (w->reschedule_cb) |
2975 | if (w->reschedule_cb) |
2676 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2976 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2677 | else if (w->interval) |
2977 | else if (w->interval) |
2678 | { |
2978 | { |
2679 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2979 | 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 */ |
2980 | periodic_recalc (EV_A_ w); |
2681 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2682 | } |
2981 | } |
2683 | else |
2982 | else |
2684 | ev_at (w) = w->offset; |
2983 | ev_at (w) = w->offset; |
2685 | |
2984 | |
2686 | EV_FREQUENT_CHECK; |
2985 | EV_FREQUENT_CHECK; |
… | |
… | |
2807 | sa.sa_handler = ev_sighandler; |
3106 | sa.sa_handler = ev_sighandler; |
2808 | sigfillset (&sa.sa_mask); |
3107 | sigfillset (&sa.sa_mask); |
2809 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3108 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2810 | sigaction (w->signum, &sa, 0); |
3109 | sigaction (w->signum, &sa, 0); |
2811 | |
3110 | |
|
|
3111 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3112 | { |
2812 | sigemptyset (&sa.sa_mask); |
3113 | sigemptyset (&sa.sa_mask); |
2813 | sigaddset (&sa.sa_mask, w->signum); |
3114 | sigaddset (&sa.sa_mask, w->signum); |
2814 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3115 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3116 | } |
2815 | #endif |
3117 | #endif |
2816 | } |
3118 | } |
2817 | |
3119 | |
2818 | EV_FREQUENT_CHECK; |
3120 | EV_FREQUENT_CHECK; |
2819 | } |
3121 | } |
… | |
… | |
2960 | if (!pend || pend == path) |
3262 | if (!pend || pend == path) |
2961 | break; |
3263 | break; |
2962 | |
3264 | |
2963 | *pend = 0; |
3265 | *pend = 0; |
2964 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3266 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2965 | } |
3267 | } |
2966 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3268 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2967 | } |
3269 | } |
2968 | } |
3270 | } |
2969 | |
3271 | |
2970 | if (w->wd >= 0) |
3272 | if (w->wd >= 0) |
… | |
… | |
3037 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3339 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3038 | ofs += sizeof (struct inotify_event) + ev->len; |
3340 | ofs += sizeof (struct inotify_event) + ev->len; |
3039 | } |
3341 | } |
3040 | } |
3342 | } |
3041 | |
3343 | |
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 | } |
|
|
3073 | |
|
|
3074 | inline_size void |
3344 | inline_size void ecb_cold |
3075 | ev_check_2625 (EV_P) |
3345 | ev_check_2625 (EV_P) |
3076 | { |
3346 | { |
3077 | /* kernels < 2.6.25 are borked |
3347 | /* kernels < 2.6.25 are borked |
3078 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3348 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3079 | */ |
3349 | */ |
… | |
… | |
3400 | |
3670 | |
3401 | #if EV_EMBED_ENABLE |
3671 | #if EV_EMBED_ENABLE |
3402 | void noinline |
3672 | void noinline |
3403 | ev_embed_sweep (EV_P_ ev_embed *w) |
3673 | ev_embed_sweep (EV_P_ ev_embed *w) |
3404 | { |
3674 | { |
3405 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3675 | ev_run (w->other, EVRUN_NOWAIT); |
3406 | } |
3676 | } |
3407 | |
3677 | |
3408 | static void |
3678 | static void |
3409 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3679 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3410 | { |
3680 | { |
3411 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3681 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3412 | |
3682 | |
3413 | if (ev_cb (w)) |
3683 | if (ev_cb (w)) |
3414 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3684 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3415 | else |
3685 | else |
3416 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3686 | ev_run (w->other, EVRUN_NOWAIT); |
3417 | } |
3687 | } |
3418 | |
3688 | |
3419 | static void |
3689 | static void |
3420 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3690 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3421 | { |
3691 | { |
… | |
… | |
3425 | EV_P = w->other; |
3695 | EV_P = w->other; |
3426 | |
3696 | |
3427 | while (fdchangecnt) |
3697 | while (fdchangecnt) |
3428 | { |
3698 | { |
3429 | fd_reify (EV_A); |
3699 | fd_reify (EV_A); |
3430 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3700 | ev_run (EV_A_ EVRUN_NOWAIT); |
3431 | } |
3701 | } |
3432 | } |
3702 | } |
3433 | } |
3703 | } |
3434 | |
3704 | |
3435 | static void |
3705 | static void |
… | |
… | |
3441 | |
3711 | |
3442 | { |
3712 | { |
3443 | EV_P = w->other; |
3713 | EV_P = w->other; |
3444 | |
3714 | |
3445 | ev_loop_fork (EV_A); |
3715 | ev_loop_fork (EV_A); |
3446 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3716 | ev_run (EV_A_ EVRUN_NOWAIT); |
3447 | } |
3717 | } |
3448 | |
3718 | |
3449 | ev_embed_start (EV_A_ w); |
3719 | ev_embed_start (EV_A_ w); |
3450 | } |
3720 | } |
3451 | |
3721 | |
… | |
… | |
3543 | |
3813 | |
3544 | EV_FREQUENT_CHECK; |
3814 | EV_FREQUENT_CHECK; |
3545 | } |
3815 | } |
3546 | #endif |
3816 | #endif |
3547 | |
3817 | |
|
|
3818 | #if EV_CLEANUP_ENABLE |
|
|
3819 | void |
|
|
3820 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
3821 | { |
|
|
3822 | if (expect_false (ev_is_active (w))) |
|
|
3823 | return; |
|
|
3824 | |
|
|
3825 | EV_FREQUENT_CHECK; |
|
|
3826 | |
|
|
3827 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3828 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3829 | cleanups [cleanupcnt - 1] = w; |
|
|
3830 | |
|
|
3831 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3832 | ev_unref (EV_A); |
|
|
3833 | EV_FREQUENT_CHECK; |
|
|
3834 | } |
|
|
3835 | |
|
|
3836 | void |
|
|
3837 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3838 | { |
|
|
3839 | clear_pending (EV_A_ (W)w); |
|
|
3840 | if (expect_false (!ev_is_active (w))) |
|
|
3841 | return; |
|
|
3842 | |
|
|
3843 | EV_FREQUENT_CHECK; |
|
|
3844 | ev_ref (EV_A); |
|
|
3845 | |
|
|
3846 | { |
|
|
3847 | int active = ev_active (w); |
|
|
3848 | |
|
|
3849 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3850 | ev_active (cleanups [active - 1]) = active; |
|
|
3851 | } |
|
|
3852 | |
|
|
3853 | ev_stop (EV_A_ (W)w); |
|
|
3854 | |
|
|
3855 | EV_FREQUENT_CHECK; |
|
|
3856 | } |
|
|
3857 | #endif |
|
|
3858 | |
3548 | #if EV_ASYNC_ENABLE |
3859 | #if EV_ASYNC_ENABLE |
3549 | void |
3860 | void |
3550 | ev_async_start (EV_P_ ev_async *w) |
3861 | ev_async_start (EV_P_ ev_async *w) |
3551 | { |
3862 | { |
3552 | if (expect_false (ev_is_active (w))) |
3863 | if (expect_false (ev_is_active (w))) |
3553 | return; |
3864 | return; |
|
|
3865 | |
|
|
3866 | w->sent = 0; |
3554 | |
3867 | |
3555 | evpipe_init (EV_A); |
3868 | evpipe_init (EV_A); |
3556 | |
3869 | |
3557 | EV_FREQUENT_CHECK; |
3870 | EV_FREQUENT_CHECK; |
3558 | |
3871 | |
… | |
… | |
3636 | { |
3949 | { |
3637 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3950 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3638 | |
3951 | |
3639 | if (expect_false (!once)) |
3952 | if (expect_false (!once)) |
3640 | { |
3953 | { |
3641 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3954 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
3642 | return; |
3955 | return; |
3643 | } |
3956 | } |
3644 | |
3957 | |
3645 | once->cb = cb; |
3958 | once->cb = cb; |
3646 | once->arg = arg; |
3959 | once->arg = arg; |
… | |
… | |
3661 | } |
3974 | } |
3662 | |
3975 | |
3663 | /*****************************************************************************/ |
3976 | /*****************************************************************************/ |
3664 | |
3977 | |
3665 | #if EV_WALK_ENABLE |
3978 | #if EV_WALK_ENABLE |
3666 | void |
3979 | void ecb_cold |
3667 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3980 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3668 | { |
3981 | { |
3669 | int i, j; |
3982 | int i, j; |
3670 | ev_watcher_list *wl, *wn; |
3983 | ev_watcher_list *wl, *wn; |
3671 | |
3984 | |
… | |
… | |
3778 | |
4091 | |
3779 | #if EV_MULTIPLICITY |
4092 | #if EV_MULTIPLICITY |
3780 | #include "ev_wrap.h" |
4093 | #include "ev_wrap.h" |
3781 | #endif |
4094 | #endif |
3782 | |
4095 | |
3783 | #ifdef __cplusplus |
4096 | EV_CPP(}) |
3784 | } |
|
|
3785 | #endif |
|
|
3786 | |
4097 | |