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 | |
… | |
… | |
186 | # ifndef EV_SELECT_IS_WINSOCKET |
196 | # ifndef EV_SELECT_IS_WINSOCKET |
187 | # define EV_SELECT_IS_WINSOCKET 1 |
197 | # define EV_SELECT_IS_WINSOCKET 1 |
188 | # endif |
198 | # endif |
189 | # undef EV_AVOID_STDIO |
199 | # undef EV_AVOID_STDIO |
190 | #endif |
200 | #endif |
|
|
201 | |
|
|
202 | /* OS X, in its infinite idiocy, actually HARDCODES |
|
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203 | * a limit of 1024 into their select. Where people have brains, |
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204 | * OS X engineers apparently have a vacuum. Or maybe they were |
|
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205 | * ordered to have a vacuum, or they do anything for money. |
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206 | * This might help. Or not. |
|
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207 | */ |
|
|
208 | #define _DARWIN_UNLIMITED_SELECT 1 |
191 | |
209 | |
192 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
210 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
193 | |
211 | |
194 | /* try to deduce the maximum number of signals on this platform */ |
212 | /* try to deduce the maximum number of signals on this platform */ |
195 | #if defined (EV_NSIG) |
213 | #if defined (EV_NSIG) |
… | |
… | |
217 | /* to make it compile regardless, just remove the above line, */ |
235 | /* to make it compile regardless, just remove the above line, */ |
218 | /* but consider reporting it, too! :) */ |
236 | /* but consider reporting it, too! :) */ |
219 | # define EV_NSIG 65 |
237 | # define EV_NSIG 65 |
220 | #endif |
238 | #endif |
221 | |
239 | |
|
|
240 | #ifndef EV_USE_FLOOR |
|
|
241 | # define EV_USE_FLOOR 0 |
|
|
242 | #endif |
|
|
243 | |
222 | #ifndef EV_USE_CLOCK_SYSCALL |
244 | #ifndef EV_USE_CLOCK_SYSCALL |
223 | # if __linux && __GLIBC__ >= 2 |
245 | # if __linux && __GLIBC__ >= 2 |
224 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
246 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
225 | # else |
247 | # else |
226 | # define EV_USE_CLOCK_SYSCALL 0 |
248 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
361 | # undef EV_USE_INOTIFY |
383 | # undef EV_USE_INOTIFY |
362 | # define EV_USE_INOTIFY 0 |
384 | # define EV_USE_INOTIFY 0 |
363 | #endif |
385 | #endif |
364 | |
386 | |
365 | #if !EV_USE_NANOSLEEP |
387 | #if !EV_USE_NANOSLEEP |
366 | # ifndef _WIN32 |
388 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
389 | # if !defined(_WIN32) && !defined(__hpux) |
367 | # include <sys/select.h> |
390 | # include <sys/select.h> |
368 | # endif |
391 | # endif |
369 | #endif |
392 | #endif |
370 | |
393 | |
371 | #if EV_USE_INOTIFY |
394 | #if EV_USE_INOTIFY |
372 | # include <sys/utsname.h> |
|
|
373 | # include <sys/statfs.h> |
395 | # include <sys/statfs.h> |
374 | # include <sys/inotify.h> |
396 | # include <sys/inotify.h> |
375 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
397 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
376 | # ifndef IN_DONT_FOLLOW |
398 | # ifndef IN_DONT_FOLLOW |
377 | # undef EV_USE_INOTIFY |
399 | # undef EV_USE_INOTIFY |
… | |
… | |
394 | # define EFD_CLOEXEC O_CLOEXEC |
416 | # define EFD_CLOEXEC O_CLOEXEC |
395 | # else |
417 | # else |
396 | # define EFD_CLOEXEC 02000000 |
418 | # define EFD_CLOEXEC 02000000 |
397 | # endif |
419 | # endif |
398 | # endif |
420 | # 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); |
421 | 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 |
422 | #endif |
407 | |
423 | |
408 | #if EV_USE_SIGNALFD |
424 | #if EV_USE_SIGNALFD |
409 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
425 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
410 | # include <stdint.h> |
426 | # include <stdint.h> |
… | |
… | |
416 | # define SFD_CLOEXEC O_CLOEXEC |
432 | # define SFD_CLOEXEC O_CLOEXEC |
417 | # else |
433 | # else |
418 | # define SFD_CLOEXEC 02000000 |
434 | # define SFD_CLOEXEC 02000000 |
419 | # endif |
435 | # endif |
420 | # endif |
436 | # endif |
421 | # ifdef __cplusplus |
|
|
422 | extern "C" { |
|
|
423 | # endif |
|
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424 | int signalfd (int fd, const sigset_t *mask, int flags); |
437 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
425 | |
438 | |
426 | struct signalfd_siginfo |
439 | struct signalfd_siginfo |
427 | { |
440 | { |
428 | uint32_t ssi_signo; |
441 | uint32_t ssi_signo; |
429 | char pad[128 - sizeof (uint32_t)]; |
442 | char pad[128 - sizeof (uint32_t)]; |
430 | }; |
443 | }; |
431 | # ifdef __cplusplus |
|
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432 | } |
|
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433 | # endif |
444 | #endif |
434 | #endif |
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435 | |
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436 | |
445 | |
437 | /**/ |
446 | /**/ |
438 | |
447 | |
439 | #if EV_VERIFY >= 3 |
448 | #if EV_VERIFY >= 3 |
440 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
449 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
441 | #else |
450 | #else |
442 | # define EV_FREQUENT_CHECK do { } while (0) |
451 | # define EV_FREQUENT_CHECK do { } while (0) |
443 | #endif |
452 | #endif |
444 | |
453 | |
445 | /* |
454 | /* |
446 | * This is used to avoid floating point rounding problems. |
455 | * 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. |
456 | * This value is good at least till the year 4000. |
451 | * Better solutions welcome. |
|
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452 | */ |
457 | */ |
453 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
458 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
459 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
454 | |
460 | |
455 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
461 | #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) */ |
462 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
457 | |
463 | |
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464 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
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465 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
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466 | |
|
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467 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
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468 | /* ECB.H BEGIN */ |
|
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469 | /* |
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470 | * libecb - http://software.schmorp.de/pkg/libecb |
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471 | * |
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472 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
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473 | * Copyright (©) 2011 Emanuele Giaquinta |
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474 | * All rights reserved. |
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475 | * |
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476 | * Redistribution and use in source and binary forms, with or without modifica- |
|
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477 | * tion, are permitted provided that the following conditions are met: |
|
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478 | * |
|
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479 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
480 | * this list of conditions and the following disclaimer. |
|
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481 | * |
|
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482 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
483 | * notice, this list of conditions and the following disclaimer in the |
|
|
484 | * documentation and/or other materials provided with the distribution. |
|
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485 | * |
|
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486 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
487 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
488 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
489 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
490 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
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491 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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492 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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493 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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494 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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495 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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496 | */ |
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497 | |
|
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498 | #ifndef ECB_H |
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499 | #define ECB_H |
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500 | |
|
|
501 | #ifdef _WIN32 |
|
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502 | typedef signed char int8_t; |
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503 | typedef unsigned char uint8_t; |
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504 | typedef signed short int16_t; |
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505 | typedef unsigned short uint16_t; |
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506 | typedef signed int int32_t; |
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507 | typedef unsigned int uint32_t; |
458 | #if __GNUC__ >= 4 |
508 | #if __GNUC__ |
459 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
509 | typedef signed long long int64_t; |
460 | # define noinline __attribute__ ((noinline)) |
510 | typedef unsigned long long uint64_t; |
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511 | #else /* _MSC_VER || __BORLANDC__ */ |
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512 | typedef signed __int64 int64_t; |
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513 | typedef unsigned __int64 uint64_t; |
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514 | #endif |
461 | #else |
515 | #else |
462 | # define expect(expr,value) (expr) |
516 | #include <inttypes.h> |
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 |
517 | #endif |
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518 | |
|
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519 | /* many compilers define _GNUC_ to some versions but then only implement |
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520 | * what their idiot authors think are the "more important" extensions, |
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521 | * causing enormous grief in return for some better fake benchmark numbers. |
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522 | * or so. |
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523 | * we try to detect these and simply assume they are not gcc - if they have |
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524 | * an issue with that they should have done it right in the first place. |
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525 | */ |
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526 | #ifndef ECB_GCC_VERSION |
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527 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
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528 | #define ECB_GCC_VERSION(major,minor) 0 |
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529 | #else |
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530 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
467 | #endif |
531 | #endif |
|
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532 | #endif |
468 | |
533 | |
|
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534 | /*****************************************************************************/ |
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535 | |
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536 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
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537 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
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538 | |
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539 | #if ECB_NO_THREADS || ECB_NO_SMP |
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540 | #define ECB_MEMORY_FENCE do { } while (0) |
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541 | #endif |
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542 | |
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543 | #ifndef ECB_MEMORY_FENCE |
|
|
544 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110 |
|
|
545 | #if __i386__ |
|
|
546 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
547 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
|
|
548 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
|
|
549 | #elif __amd64 |
|
|
550 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
551 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
|
|
552 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
|
|
553 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
554 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
555 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
|
|
556 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
|
|
557 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
558 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
|
|
559 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
|
|
560 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
561 | #elif defined(__sparc) |
|
|
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory") |
|
|
563 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory") |
|
|
564 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore") |
|
|
565 | #endif |
|
|
566 | #endif |
|
|
567 | #endif |
|
|
568 | |
|
|
569 | #ifndef ECB_MEMORY_FENCE |
|
|
570 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) |
|
|
571 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
572 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
|
|
573 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
|
|
574 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
575 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
576 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
577 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
578 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
579 | #elif defined(_WIN32) |
|
|
580 | #include <WinNT.h> |
|
|
581 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
582 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
583 | #include <mbarrier.h> |
|
|
584 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
585 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
586 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
587 | #endif |
|
|
588 | #endif |
|
|
589 | |
|
|
590 | #ifndef ECB_MEMORY_FENCE |
|
|
591 | #if !ECB_AVOID_PTHREADS |
|
|
592 | /* |
|
|
593 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
594 | * or failure to find pthread.h, then you should implement |
|
|
595 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
596 | * OR provide pthread.h and link against the posix thread library |
|
|
597 | * of your system. |
|
|
598 | */ |
|
|
599 | #include <pthread.h> |
|
|
600 | #define ECB_NEEDS_PTHREADS 1 |
|
|
601 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
602 | |
|
|
603 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
604 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
605 | #endif |
|
|
606 | #endif |
|
|
607 | |
|
|
608 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
|
|
609 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
610 | #endif |
|
|
611 | |
|
|
612 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
|
|
613 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
614 | #endif |
|
|
615 | |
|
|
616 | /*****************************************************************************/ |
|
|
617 | |
|
|
618 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
619 | |
|
|
620 | #if __cplusplus |
|
|
621 | #define ecb_inline static inline |
|
|
622 | #elif ECB_GCC_VERSION(2,5) |
|
|
623 | #define ecb_inline static __inline__ |
|
|
624 | #elif ECB_C99 |
|
|
625 | #define ecb_inline static inline |
|
|
626 | #else |
|
|
627 | #define ecb_inline static |
|
|
628 | #endif |
|
|
629 | |
|
|
630 | #if ECB_GCC_VERSION(3,3) |
|
|
631 | #define ecb_restrict __restrict__ |
|
|
632 | #elif ECB_C99 |
|
|
633 | #define ecb_restrict restrict |
|
|
634 | #else |
|
|
635 | #define ecb_restrict |
|
|
636 | #endif |
|
|
637 | |
|
|
638 | typedef int ecb_bool; |
|
|
639 | |
|
|
640 | #define ECB_CONCAT_(a, b) a ## b |
|
|
641 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
642 | #define ECB_STRINGIFY_(a) # a |
|
|
643 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
644 | |
|
|
645 | #define ecb_function_ ecb_inline |
|
|
646 | |
|
|
647 | #if ECB_GCC_VERSION(3,1) |
|
|
648 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
649 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
650 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
651 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
652 | #else |
|
|
653 | #define ecb_attribute(attrlist) |
|
|
654 | #define ecb_is_constant(expr) 0 |
|
|
655 | #define ecb_expect(expr,value) (expr) |
|
|
656 | #define ecb_prefetch(addr,rw,locality) |
|
|
657 | #endif |
|
|
658 | |
|
|
659 | /* no emulation for ecb_decltype */ |
|
|
660 | #if ECB_GCC_VERSION(4,5) |
|
|
661 | #define ecb_decltype(x) __decltype(x) |
|
|
662 | #elif ECB_GCC_VERSION(3,0) |
|
|
663 | #define ecb_decltype(x) __typeof(x) |
|
|
664 | #endif |
|
|
665 | |
|
|
666 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
667 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
668 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
669 | #define ecb_const ecb_attribute ((__const__)) |
|
|
670 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
671 | |
|
|
672 | #if ECB_GCC_VERSION(4,3) |
|
|
673 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
674 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
675 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
676 | #else |
|
|
677 | #define ecb_artificial |
|
|
678 | #define ecb_hot |
|
|
679 | #define ecb_cold |
|
|
680 | #endif |
|
|
681 | |
|
|
682 | /* put around conditional expressions if you are very sure that the */ |
|
|
683 | /* expression is mostly true or mostly false. note that these return */ |
|
|
684 | /* booleans, not the expression. */ |
469 | #define expect_false(expr) expect ((expr) != 0, 0) |
685 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
470 | #define expect_true(expr) expect ((expr) != 0, 1) |
686 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
687 | /* for compatibility to the rest of the world */ |
|
|
688 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
689 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
690 | |
|
|
691 | /* count trailing zero bits and count # of one bits */ |
|
|
692 | #if ECB_GCC_VERSION(3,4) |
|
|
693 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
694 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
695 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
696 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
697 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
698 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
699 | /* no popcountll */ |
|
|
700 | #else |
|
|
701 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
702 | ecb_function_ int |
|
|
703 | ecb_ctz32 (uint32_t x) |
|
|
704 | { |
|
|
705 | int r = 0; |
|
|
706 | |
|
|
707 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
708 | |
|
|
709 | #if ECB_branchless_on_i386 |
|
|
710 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
711 | r += !!(x & 0xcccccccc) << 1; |
|
|
712 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
713 | r += !!(x & 0xff00ff00) << 3; |
|
|
714 | r += !!(x & 0xffff0000) << 4; |
|
|
715 | #else |
|
|
716 | if (x & 0xaaaaaaaa) r += 1; |
|
|
717 | if (x & 0xcccccccc) r += 2; |
|
|
718 | if (x & 0xf0f0f0f0) r += 4; |
|
|
719 | if (x & 0xff00ff00) r += 8; |
|
|
720 | if (x & 0xffff0000) r += 16; |
|
|
721 | #endif |
|
|
722 | |
|
|
723 | return r; |
|
|
724 | } |
|
|
725 | |
|
|
726 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
727 | ecb_function_ int |
|
|
728 | ecb_ctz64 (uint64_t x) |
|
|
729 | { |
|
|
730 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
731 | return ecb_ctz32 (x >> shift) + shift; |
|
|
732 | } |
|
|
733 | |
|
|
734 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
735 | ecb_function_ int |
|
|
736 | ecb_popcount32 (uint32_t x) |
|
|
737 | { |
|
|
738 | x -= (x >> 1) & 0x55555555; |
|
|
739 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
740 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
741 | x *= 0x01010101; |
|
|
742 | |
|
|
743 | return x >> 24; |
|
|
744 | } |
|
|
745 | |
|
|
746 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
747 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
748 | { |
|
|
749 | int r = 0; |
|
|
750 | |
|
|
751 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
752 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
753 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
754 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
755 | if (x >> 1) { r += 1; } |
|
|
756 | |
|
|
757 | return r; |
|
|
758 | } |
|
|
759 | |
|
|
760 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
761 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
762 | { |
|
|
763 | int r = 0; |
|
|
764 | |
|
|
765 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
766 | |
|
|
767 | return r + ecb_ld32 (x); |
|
|
768 | } |
|
|
769 | #endif |
|
|
770 | |
|
|
771 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
772 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
773 | { |
|
|
774 | return ( (x * 0x0802U & 0x22110U) |
|
|
775 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
776 | } |
|
|
777 | |
|
|
778 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
779 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
780 | { |
|
|
781 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
782 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
783 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
784 | x = ( x >> 8 ) | ( x << 8); |
|
|
785 | |
|
|
786 | return x; |
|
|
787 | } |
|
|
788 | |
|
|
789 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
790 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
791 | { |
|
|
792 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
793 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
794 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
795 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
796 | x = ( x >> 16 ) | ( x << 16); |
|
|
797 | |
|
|
798 | return x; |
|
|
799 | } |
|
|
800 | |
|
|
801 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
802 | /* so for this version we are lazy */ |
|
|
803 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
804 | ecb_function_ int |
|
|
805 | ecb_popcount64 (uint64_t x) |
|
|
806 | { |
|
|
807 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
808 | } |
|
|
809 | |
|
|
810 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
811 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
812 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
813 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
814 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
815 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
816 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
817 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
818 | |
|
|
819 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
820 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
821 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
822 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
823 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
824 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
825 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
826 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
827 | |
|
|
828 | #if ECB_GCC_VERSION(4,3) |
|
|
829 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
830 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
831 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
832 | #else |
|
|
833 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
834 | ecb_function_ uint16_t |
|
|
835 | ecb_bswap16 (uint16_t x) |
|
|
836 | { |
|
|
837 | return ecb_rotl16 (x, 8); |
|
|
838 | } |
|
|
839 | |
|
|
840 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
841 | ecb_function_ uint32_t |
|
|
842 | ecb_bswap32 (uint32_t x) |
|
|
843 | { |
|
|
844 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
845 | } |
|
|
846 | |
|
|
847 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
848 | ecb_function_ uint64_t |
|
|
849 | ecb_bswap64 (uint64_t x) |
|
|
850 | { |
|
|
851 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
852 | } |
|
|
853 | #endif |
|
|
854 | |
|
|
855 | #if ECB_GCC_VERSION(4,5) |
|
|
856 | #define ecb_unreachable() __builtin_unreachable () |
|
|
857 | #else |
|
|
858 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
859 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
|
|
860 | ecb_function_ void ecb_unreachable (void) { } |
|
|
861 | #endif |
|
|
862 | |
|
|
863 | /* try to tell the compiler that some condition is definitely true */ |
|
|
864 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
865 | |
|
|
866 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
867 | ecb_function_ unsigned char |
|
|
868 | ecb_byteorder_helper (void) |
|
|
869 | { |
|
|
870 | const uint32_t u = 0x11223344; |
|
|
871 | return *(unsigned char *)&u; |
|
|
872 | } |
|
|
873 | |
|
|
874 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
|
|
875 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
876 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
|
|
877 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
878 | |
|
|
879 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
880 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
881 | #else |
|
|
882 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
883 | #endif |
|
|
884 | |
|
|
885 | #if __cplusplus |
|
|
886 | template<typename T> |
|
|
887 | static inline T ecb_div_rd (T val, T div) |
|
|
888 | { |
|
|
889 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
890 | } |
|
|
891 | template<typename T> |
|
|
892 | static inline T ecb_div_ru (T val, T div) |
|
|
893 | { |
|
|
894 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
895 | } |
|
|
896 | #else |
|
|
897 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
898 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
899 | #endif |
|
|
900 | |
|
|
901 | #if ecb_cplusplus_does_not_suck |
|
|
902 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
903 | template<typename T, int N> |
|
|
904 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
905 | { |
|
|
906 | return N; |
|
|
907 | } |
|
|
908 | #else |
|
|
909 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
910 | #endif |
|
|
911 | |
|
|
912 | #endif |
|
|
913 | |
|
|
914 | /* ECB.H END */ |
|
|
915 | |
|
|
916 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
917 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
918 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
919 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
920 | * libev, in which cases the memory fences become nops. |
|
|
921 | * alternatively, you can remove this #error and link against libpthread, |
|
|
922 | * which will then provide the memory fences. |
|
|
923 | */ |
|
|
924 | # error "memory fences not defined for your architecture, please report" |
|
|
925 | #endif |
|
|
926 | |
|
|
927 | #ifndef ECB_MEMORY_FENCE |
|
|
928 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
929 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
930 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
931 | #endif |
|
|
932 | |
|
|
933 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
934 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
935 | #define noinline ecb_noinline |
|
|
936 | |
471 | #define inline_size static inline |
937 | #define inline_size ecb_inline |
472 | |
938 | |
473 | #if EV_FEATURE_CODE |
939 | #if EV_FEATURE_CODE |
474 | # define inline_speed static inline |
940 | # define inline_speed ecb_inline |
475 | #else |
941 | #else |
476 | # define inline_speed static noinline |
942 | # define inline_speed static noinline |
477 | #endif |
943 | #endif |
478 | |
944 | |
479 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
945 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
494 | #define ev_active(w) ((W)(w))->active |
960 | #define ev_active(w) ((W)(w))->active |
495 | #define ev_at(w) ((WT)(w))->at |
961 | #define ev_at(w) ((WT)(w))->at |
496 | |
962 | |
497 | #if EV_USE_REALTIME |
963 | #if EV_USE_REALTIME |
498 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
964 | /* 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 */ |
965 | /* giving it a reasonably high chance of working on typical architectures */ |
500 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
966 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
501 | #endif |
967 | #endif |
502 | |
968 | |
503 | #if EV_USE_MONOTONIC |
969 | #if EV_USE_MONOTONIC |
504 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
970 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
… | |
… | |
518 | # include "ev_win32.c" |
984 | # include "ev_win32.c" |
519 | #endif |
985 | #endif |
520 | |
986 | |
521 | /*****************************************************************************/ |
987 | /*****************************************************************************/ |
522 | |
988 | |
|
|
989 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
990 | |
|
|
991 | #if EV_USE_FLOOR |
|
|
992 | # include <math.h> |
|
|
993 | # define ev_floor(v) floor (v) |
|
|
994 | #else |
|
|
995 | |
|
|
996 | #include <float.h> |
|
|
997 | |
|
|
998 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
999 | static ev_tstamp noinline |
|
|
1000 | ev_floor (ev_tstamp v) |
|
|
1001 | { |
|
|
1002 | /* the choice of shift factor is not terribly important */ |
|
|
1003 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1004 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1005 | #else |
|
|
1006 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1007 | #endif |
|
|
1008 | |
|
|
1009 | /* argument too large for an unsigned long? */ |
|
|
1010 | if (expect_false (v >= shift)) |
|
|
1011 | { |
|
|
1012 | ev_tstamp f; |
|
|
1013 | |
|
|
1014 | if (v == v - 1.) |
|
|
1015 | return v; /* very large number */ |
|
|
1016 | |
|
|
1017 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1018 | return f + ev_floor (v - f); |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | /* special treatment for negative args? */ |
|
|
1022 | if (expect_false (v < 0.)) |
|
|
1023 | { |
|
|
1024 | ev_tstamp f = -ev_floor (-v); |
|
|
1025 | |
|
|
1026 | return f - (f == v ? 0 : 1); |
|
|
1027 | } |
|
|
1028 | |
|
|
1029 | /* fits into an unsigned long */ |
|
|
1030 | return (unsigned long)v; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | #endif |
|
|
1034 | |
|
|
1035 | /*****************************************************************************/ |
|
|
1036 | |
|
|
1037 | #ifdef __linux |
|
|
1038 | # include <sys/utsname.h> |
|
|
1039 | #endif |
|
|
1040 | |
|
|
1041 | static unsigned int noinline ecb_cold |
|
|
1042 | ev_linux_version (void) |
|
|
1043 | { |
|
|
1044 | #ifdef __linux |
|
|
1045 | unsigned int v = 0; |
|
|
1046 | struct utsname buf; |
|
|
1047 | int i; |
|
|
1048 | char *p = buf.release; |
|
|
1049 | |
|
|
1050 | if (uname (&buf)) |
|
|
1051 | return 0; |
|
|
1052 | |
|
|
1053 | for (i = 3+1; --i; ) |
|
|
1054 | { |
|
|
1055 | unsigned int c = 0; |
|
|
1056 | |
|
|
1057 | for (;;) |
|
|
1058 | { |
|
|
1059 | if (*p >= '0' && *p <= '9') |
|
|
1060 | c = c * 10 + *p++ - '0'; |
|
|
1061 | else |
|
|
1062 | { |
|
|
1063 | p += *p == '.'; |
|
|
1064 | break; |
|
|
1065 | } |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | v = (v << 8) | c; |
|
|
1069 | } |
|
|
1070 | |
|
|
1071 | return v; |
|
|
1072 | #else |
|
|
1073 | return 0; |
|
|
1074 | #endif |
|
|
1075 | } |
|
|
1076 | |
|
|
1077 | /*****************************************************************************/ |
|
|
1078 | |
523 | #if EV_AVOID_STDIO |
1079 | #if EV_AVOID_STDIO |
524 | static void noinline |
1080 | static void noinline ecb_cold |
525 | ev_printerr (const char *msg) |
1081 | ev_printerr (const char *msg) |
526 | { |
1082 | { |
527 | write (STDERR_FILENO, msg, strlen (msg)); |
1083 | write (STDERR_FILENO, msg, strlen (msg)); |
528 | } |
1084 | } |
529 | #endif |
1085 | #endif |
530 | |
1086 | |
531 | static void (*syserr_cb)(const char *msg); |
1087 | static void (*syserr_cb)(const char *msg); |
532 | |
1088 | |
533 | void |
1089 | void ecb_cold |
534 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1090 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
535 | { |
1091 | { |
536 | syserr_cb = cb; |
1092 | syserr_cb = cb; |
537 | } |
1093 | } |
538 | |
1094 | |
539 | static void noinline |
1095 | static void noinline ecb_cold |
540 | ev_syserr (const char *msg) |
1096 | ev_syserr (const char *msg) |
541 | { |
1097 | { |
542 | if (!msg) |
1098 | if (!msg) |
543 | msg = "(libev) system error"; |
1099 | msg = "(libev) system error"; |
544 | |
1100 | |
545 | if (syserr_cb) |
1101 | if (syserr_cb) |
546 | syserr_cb (msg); |
1102 | syserr_cb (msg); |
547 | else |
1103 | else |
548 | { |
1104 | { |
549 | #if EV_AVOID_STDIO |
1105 | #if EV_AVOID_STDIO |
550 | const char *err = strerror (errno); |
|
|
551 | |
|
|
552 | ev_printerr (msg); |
1106 | ev_printerr (msg); |
553 | ev_printerr (": "); |
1107 | ev_printerr (": "); |
554 | ev_printerr (err); |
1108 | ev_printerr (strerror (errno)); |
555 | ev_printerr ("\n"); |
1109 | ev_printerr ("\n"); |
556 | #else |
1110 | #else |
557 | perror (msg); |
1111 | perror (msg); |
558 | #endif |
1112 | #endif |
559 | abort (); |
1113 | abort (); |
… | |
… | |
579 | #endif |
1133 | #endif |
580 | } |
1134 | } |
581 | |
1135 | |
582 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1136 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
583 | |
1137 | |
584 | void |
1138 | void ecb_cold |
585 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1139 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
586 | { |
1140 | { |
587 | alloc = cb; |
1141 | alloc = cb; |
588 | } |
1142 | } |
589 | |
1143 | |
… | |
… | |
593 | ptr = alloc (ptr, size); |
1147 | ptr = alloc (ptr, size); |
594 | |
1148 | |
595 | if (!ptr && size) |
1149 | if (!ptr && size) |
596 | { |
1150 | { |
597 | #if EV_AVOID_STDIO |
1151 | #if EV_AVOID_STDIO |
598 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
1152 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
599 | #else |
1153 | #else |
600 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1154 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
601 | #endif |
1155 | #endif |
602 | abort (); |
1156 | abort (); |
603 | } |
1157 | } |
604 | |
1158 | |
605 | return ptr; |
1159 | return ptr; |
… | |
… | |
622 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
1176 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
623 | unsigned char unused; |
1177 | unsigned char unused; |
624 | #if EV_USE_EPOLL |
1178 | #if EV_USE_EPOLL |
625 | unsigned int egen; /* generation counter to counter epoll bugs */ |
1179 | unsigned int egen; /* generation counter to counter epoll bugs */ |
626 | #endif |
1180 | #endif |
627 | #if EV_SELECT_IS_WINSOCKET |
1181 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
628 | SOCKET handle; |
1182 | SOCKET handle; |
|
|
1183 | #endif |
|
|
1184 | #if EV_USE_IOCP |
|
|
1185 | OVERLAPPED or, ow; |
629 | #endif |
1186 | #endif |
630 | } ANFD; |
1187 | } ANFD; |
631 | |
1188 | |
632 | /* stores the pending event set for a given watcher */ |
1189 | /* stores the pending event set for a given watcher */ |
633 | typedef struct |
1190 | typedef struct |
… | |
… | |
675 | #undef VAR |
1232 | #undef VAR |
676 | }; |
1233 | }; |
677 | #include "ev_wrap.h" |
1234 | #include "ev_wrap.h" |
678 | |
1235 | |
679 | static struct ev_loop default_loop_struct; |
1236 | static struct ev_loop default_loop_struct; |
680 | struct ev_loop *ev_default_loop_ptr; |
1237 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
681 | |
1238 | |
682 | #else |
1239 | #else |
683 | |
1240 | |
684 | ev_tstamp ev_rt_now; |
1241 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
685 | #define VAR(name,decl) static decl; |
1242 | #define VAR(name,decl) static decl; |
686 | #include "ev_vars.h" |
1243 | #include "ev_vars.h" |
687 | #undef VAR |
1244 | #undef VAR |
688 | |
1245 | |
689 | static int ev_default_loop_ptr; |
1246 | static int ev_default_loop_ptr; |
… | |
… | |
698 | # define EV_RELEASE_CB (void)0 |
1255 | # define EV_RELEASE_CB (void)0 |
699 | # define EV_ACQUIRE_CB (void)0 |
1256 | # define EV_ACQUIRE_CB (void)0 |
700 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
1257 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
701 | #endif |
1258 | #endif |
702 | |
1259 | |
703 | #define EVUNLOOP_RECURSE 0x80 |
1260 | #define EVBREAK_RECURSE 0x80 |
704 | |
1261 | |
705 | /*****************************************************************************/ |
1262 | /*****************************************************************************/ |
706 | |
1263 | |
707 | #ifndef EV_HAVE_EV_TIME |
1264 | #ifndef EV_HAVE_EV_TIME |
708 | ev_tstamp |
1265 | ev_tstamp |
… | |
… | |
752 | if (delay > 0.) |
1309 | if (delay > 0.) |
753 | { |
1310 | { |
754 | #if EV_USE_NANOSLEEP |
1311 | #if EV_USE_NANOSLEEP |
755 | struct timespec ts; |
1312 | struct timespec ts; |
756 | |
1313 | |
757 | ts.tv_sec = (time_t)delay; |
1314 | EV_TS_SET (ts, delay); |
758 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
759 | |
|
|
760 | nanosleep (&ts, 0); |
1315 | nanosleep (&ts, 0); |
761 | #elif defined(_WIN32) |
1316 | #elif defined(_WIN32) |
762 | Sleep ((unsigned long)(delay * 1e3)); |
1317 | Sleep ((unsigned long)(delay * 1e3)); |
763 | #else |
1318 | #else |
764 | struct timeval tv; |
1319 | struct timeval tv; |
765 | |
1320 | |
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 */ |
1321 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
770 | /* something not guaranteed by newer posix versions, but guaranteed */ |
1322 | /* something not guaranteed by newer posix versions, but guaranteed */ |
771 | /* by older ones */ |
1323 | /* by older ones */ |
|
|
1324 | EV_TV_SET (tv, delay); |
772 | select (0, 0, 0, 0, &tv); |
1325 | select (0, 0, 0, 0, &tv); |
773 | #endif |
1326 | #endif |
774 | } |
1327 | } |
775 | } |
1328 | } |
776 | |
1329 | |
777 | /*****************************************************************************/ |
1330 | /*****************************************************************************/ |
778 | |
1331 | |
779 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
1332 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
780 | |
1333 | |
781 | /* find a suitable new size for the given array, */ |
1334 | /* find a suitable new size for the given array, */ |
782 | /* hopefully by rounding to a ncie-to-malloc size */ |
1335 | /* hopefully by rounding to a nice-to-malloc size */ |
783 | inline_size int |
1336 | inline_size int |
784 | array_nextsize (int elem, int cur, int cnt) |
1337 | array_nextsize (int elem, int cur, int cnt) |
785 | { |
1338 | { |
786 | int ncur = cur + 1; |
1339 | int ncur = cur + 1; |
787 | |
1340 | |
788 | do |
1341 | do |
789 | ncur <<= 1; |
1342 | ncur <<= 1; |
790 | while (cnt > ncur); |
1343 | while (cnt > ncur); |
791 | |
1344 | |
792 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
1345 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
793 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
1346 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
794 | { |
1347 | { |
795 | ncur *= elem; |
1348 | ncur *= elem; |
796 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
1349 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
797 | ncur = ncur - sizeof (void *) * 4; |
1350 | ncur = ncur - sizeof (void *) * 4; |
… | |
… | |
799 | } |
1352 | } |
800 | |
1353 | |
801 | return ncur; |
1354 | return ncur; |
802 | } |
1355 | } |
803 | |
1356 | |
804 | static noinline void * |
1357 | static void * noinline ecb_cold |
805 | array_realloc (int elem, void *base, int *cur, int cnt) |
1358 | array_realloc (int elem, void *base, int *cur, int cnt) |
806 | { |
1359 | { |
807 | *cur = array_nextsize (elem, *cur, cnt); |
1360 | *cur = array_nextsize (elem, *cur, cnt); |
808 | return ev_realloc (base, elem * *cur); |
1361 | return ev_realloc (base, elem * *cur); |
809 | } |
1362 | } |
… | |
… | |
812 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1365 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
813 | |
1366 | |
814 | #define array_needsize(type,base,cur,cnt,init) \ |
1367 | #define array_needsize(type,base,cur,cnt,init) \ |
815 | if (expect_false ((cnt) > (cur))) \ |
1368 | if (expect_false ((cnt) > (cur))) \ |
816 | { \ |
1369 | { \ |
817 | int ocur_ = (cur); \ |
1370 | int ecb_unused ocur_ = (cur); \ |
818 | (base) = (type *)array_realloc \ |
1371 | (base) = (type *)array_realloc \ |
819 | (sizeof (type), (base), &(cur), (cnt)); \ |
1372 | (sizeof (type), (base), &(cur), (cnt)); \ |
820 | init ((base) + (ocur_), (cur) - ocur_); \ |
1373 | init ((base) + (ocur_), (cur) - ocur_); \ |
821 | } |
1374 | } |
822 | |
1375 | |
… | |
… | |
922 | inline_size void |
1475 | inline_size void |
923 | fd_reify (EV_P) |
1476 | fd_reify (EV_P) |
924 | { |
1477 | { |
925 | int i; |
1478 | int i; |
926 | |
1479 | |
|
|
1480 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1481 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1482 | { |
|
|
1483 | int fd = fdchanges [i]; |
|
|
1484 | ANFD *anfd = anfds + fd; |
|
|
1485 | |
|
|
1486 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1487 | { |
|
|
1488 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1489 | |
|
|
1490 | if (handle != anfd->handle) |
|
|
1491 | { |
|
|
1492 | unsigned long arg; |
|
|
1493 | |
|
|
1494 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1495 | |
|
|
1496 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1497 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1498 | anfd->events = 0; |
|
|
1499 | anfd->handle = handle; |
|
|
1500 | } |
|
|
1501 | } |
|
|
1502 | } |
|
|
1503 | #endif |
|
|
1504 | |
927 | for (i = 0; i < fdchangecnt; ++i) |
1505 | for (i = 0; i < fdchangecnt; ++i) |
928 | { |
1506 | { |
929 | int fd = fdchanges [i]; |
1507 | int fd = fdchanges [i]; |
930 | ANFD *anfd = anfds + fd; |
1508 | ANFD *anfd = anfds + fd; |
931 | ev_io *w; |
1509 | ev_io *w; |
932 | |
1510 | |
933 | unsigned char events = 0; |
1511 | unsigned char o_events = anfd->events; |
|
|
1512 | unsigned char o_reify = anfd->reify; |
934 | |
1513 | |
935 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1514 | anfd->reify = 0; |
936 | events |= (unsigned char)w->events; |
|
|
937 | |
1515 | |
938 | #if EV_SELECT_IS_WINSOCKET |
1516 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
939 | if (events) |
|
|
940 | { |
1517 | { |
941 | unsigned long arg; |
1518 | anfd->events = 0; |
942 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
1519 | |
943 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
1520 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1521 | anfd->events |= (unsigned char)w->events; |
|
|
1522 | |
|
|
1523 | if (o_events != anfd->events) |
|
|
1524 | o_reify = EV__IOFDSET; /* actually |= */ |
944 | } |
1525 | } |
945 | #endif |
|
|
946 | |
1526 | |
947 | { |
1527 | 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); |
1528 | backend_modify (EV_A_ fd, o_events, anfd->events); |
956 | } |
|
|
957 | } |
1529 | } |
958 | |
1530 | |
959 | fdchangecnt = 0; |
1531 | fdchangecnt = 0; |
960 | } |
1532 | } |
961 | |
1533 | |
… | |
… | |
973 | fdchanges [fdchangecnt - 1] = fd; |
1545 | fdchanges [fdchangecnt - 1] = fd; |
974 | } |
1546 | } |
975 | } |
1547 | } |
976 | |
1548 | |
977 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1549 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
978 | inline_speed void |
1550 | inline_speed void ecb_cold |
979 | fd_kill (EV_P_ int fd) |
1551 | fd_kill (EV_P_ int fd) |
980 | { |
1552 | { |
981 | ev_io *w; |
1553 | ev_io *w; |
982 | |
1554 | |
983 | while ((w = (ev_io *)anfds [fd].head)) |
1555 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
986 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1558 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
987 | } |
1559 | } |
988 | } |
1560 | } |
989 | |
1561 | |
990 | /* check whether the given fd is actually valid, for error recovery */ |
1562 | /* check whether the given fd is actually valid, for error recovery */ |
991 | inline_size int |
1563 | inline_size int ecb_cold |
992 | fd_valid (int fd) |
1564 | fd_valid (int fd) |
993 | { |
1565 | { |
994 | #ifdef _WIN32 |
1566 | #ifdef _WIN32 |
995 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1567 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
996 | #else |
1568 | #else |
997 | return fcntl (fd, F_GETFD) != -1; |
1569 | return fcntl (fd, F_GETFD) != -1; |
998 | #endif |
1570 | #endif |
999 | } |
1571 | } |
1000 | |
1572 | |
1001 | /* called on EBADF to verify fds */ |
1573 | /* called on EBADF to verify fds */ |
1002 | static void noinline |
1574 | static void noinline ecb_cold |
1003 | fd_ebadf (EV_P) |
1575 | fd_ebadf (EV_P) |
1004 | { |
1576 | { |
1005 | int fd; |
1577 | int fd; |
1006 | |
1578 | |
1007 | for (fd = 0; fd < anfdmax; ++fd) |
1579 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1009 | if (!fd_valid (fd) && errno == EBADF) |
1581 | if (!fd_valid (fd) && errno == EBADF) |
1010 | fd_kill (EV_A_ fd); |
1582 | fd_kill (EV_A_ fd); |
1011 | } |
1583 | } |
1012 | |
1584 | |
1013 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1585 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1014 | static void noinline |
1586 | static void noinline ecb_cold |
1015 | fd_enomem (EV_P) |
1587 | fd_enomem (EV_P) |
1016 | { |
1588 | { |
1017 | int fd; |
1589 | int fd; |
1018 | |
1590 | |
1019 | for (fd = anfdmax; fd--; ) |
1591 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1054 | } |
1626 | } |
1055 | |
1627 | |
1056 | /*****************************************************************************/ |
1628 | /*****************************************************************************/ |
1057 | |
1629 | |
1058 | /* |
1630 | /* |
1059 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
1631 | * 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 |
1632 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
1061 | * the branching factor of the d-tree. |
1633 | * the branching factor of the d-tree. |
1062 | */ |
1634 | */ |
1063 | |
1635 | |
1064 | /* |
1636 | /* |
… | |
… | |
1214 | |
1786 | |
1215 | /*****************************************************************************/ |
1787 | /*****************************************************************************/ |
1216 | |
1788 | |
1217 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1789 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1218 | |
1790 | |
1219 | static void noinline |
1791 | static void noinline ecb_cold |
1220 | evpipe_init (EV_P) |
1792 | evpipe_init (EV_P) |
1221 | { |
1793 | { |
1222 | if (!ev_is_active (&pipe_w)) |
1794 | if (!ev_is_active (&pipe_w)) |
1223 | { |
1795 | { |
1224 | # if EV_USE_EVENTFD |
1796 | # if EV_USE_EVENTFD |
… | |
… | |
1246 | ev_io_start (EV_A_ &pipe_w); |
1818 | ev_io_start (EV_A_ &pipe_w); |
1247 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1819 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1248 | } |
1820 | } |
1249 | } |
1821 | } |
1250 | |
1822 | |
1251 | inline_size void |
1823 | inline_speed void |
1252 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1824 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1253 | { |
1825 | { |
1254 | if (!*flag) |
1826 | if (expect_true (*flag)) |
|
|
1827 | return; |
|
|
1828 | |
|
|
1829 | *flag = 1; |
|
|
1830 | |
|
|
1831 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1832 | |
|
|
1833 | pipe_write_skipped = 1; |
|
|
1834 | |
|
|
1835 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1836 | |
|
|
1837 | if (pipe_write_wanted) |
1255 | { |
1838 | { |
|
|
1839 | int old_errno; |
|
|
1840 | |
|
|
1841 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1842 | |
1256 | int old_errno = errno; /* save errno because write might clobber it */ |
1843 | old_errno = errno; /* save errno because write will clobber it */ |
1257 | char dummy; |
|
|
1258 | |
|
|
1259 | *flag = 1; |
|
|
1260 | |
1844 | |
1261 | #if EV_USE_EVENTFD |
1845 | #if EV_USE_EVENTFD |
1262 | if (evfd >= 0) |
1846 | if (evfd >= 0) |
1263 | { |
1847 | { |
1264 | uint64_t counter = 1; |
1848 | uint64_t counter = 1; |
1265 | write (evfd, &counter, sizeof (uint64_t)); |
1849 | write (evfd, &counter, sizeof (uint64_t)); |
1266 | } |
1850 | } |
1267 | else |
1851 | else |
1268 | #endif |
1852 | #endif |
|
|
1853 | { |
|
|
1854 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1855 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1856 | /* so when you think this write should be a send instead, please find out */ |
|
|
1857 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1858 | /* tell me. thank you. */ |
1269 | write (evpipe [1], &dummy, 1); |
1859 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1860 | } |
1270 | |
1861 | |
1271 | errno = old_errno; |
1862 | errno = old_errno; |
1272 | } |
1863 | } |
1273 | } |
1864 | } |
1274 | |
1865 | |
… | |
… | |
1277 | static void |
1868 | static void |
1278 | pipecb (EV_P_ ev_io *iow, int revents) |
1869 | pipecb (EV_P_ ev_io *iow, int revents) |
1279 | { |
1870 | { |
1280 | int i; |
1871 | int i; |
1281 | |
1872 | |
|
|
1873 | if (revents & EV_READ) |
|
|
1874 | { |
1282 | #if EV_USE_EVENTFD |
1875 | #if EV_USE_EVENTFD |
1283 | if (evfd >= 0) |
1876 | if (evfd >= 0) |
1284 | { |
1877 | { |
1285 | uint64_t counter; |
1878 | uint64_t counter; |
1286 | read (evfd, &counter, sizeof (uint64_t)); |
1879 | read (evfd, &counter, sizeof (uint64_t)); |
1287 | } |
1880 | } |
1288 | else |
1881 | else |
1289 | #endif |
1882 | #endif |
1290 | { |
1883 | { |
1291 | char dummy; |
1884 | char dummy; |
|
|
1885 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1292 | read (evpipe [0], &dummy, 1); |
1886 | read (evpipe [0], &dummy, 1); |
|
|
1887 | } |
1293 | } |
1888 | } |
1294 | |
1889 | |
|
|
1890 | pipe_write_skipped = 0; |
|
|
1891 | |
|
|
1892 | #if EV_SIGNAL_ENABLE |
1295 | if (sig_pending) |
1893 | if (sig_pending) |
1296 | { |
1894 | { |
1297 | sig_pending = 0; |
1895 | sig_pending = 0; |
1298 | |
1896 | |
1299 | for (i = EV_NSIG - 1; i--; ) |
1897 | for (i = EV_NSIG - 1; i--; ) |
1300 | if (expect_false (signals [i].pending)) |
1898 | if (expect_false (signals [i].pending)) |
1301 | ev_feed_signal_event (EV_A_ i + 1); |
1899 | ev_feed_signal_event (EV_A_ i + 1); |
1302 | } |
1900 | } |
|
|
1901 | #endif |
1303 | |
1902 | |
1304 | #if EV_ASYNC_ENABLE |
1903 | #if EV_ASYNC_ENABLE |
1305 | if (async_pending) |
1904 | if (async_pending) |
1306 | { |
1905 | { |
1307 | async_pending = 0; |
1906 | async_pending = 0; |
… | |
… | |
1316 | #endif |
1915 | #endif |
1317 | } |
1916 | } |
1318 | |
1917 | |
1319 | /*****************************************************************************/ |
1918 | /*****************************************************************************/ |
1320 | |
1919 | |
|
|
1920 | void |
|
|
1921 | ev_feed_signal (int signum) |
|
|
1922 | { |
|
|
1923 | #if EV_MULTIPLICITY |
|
|
1924 | EV_P = signals [signum - 1].loop; |
|
|
1925 | |
|
|
1926 | if (!EV_A) |
|
|
1927 | return; |
|
|
1928 | #endif |
|
|
1929 | |
|
|
1930 | if (!ev_active (&pipe_w)) |
|
|
1931 | return; |
|
|
1932 | |
|
|
1933 | signals [signum - 1].pending = 1; |
|
|
1934 | evpipe_write (EV_A_ &sig_pending); |
|
|
1935 | } |
|
|
1936 | |
1321 | static void |
1937 | static void |
1322 | ev_sighandler (int signum) |
1938 | ev_sighandler (int signum) |
1323 | { |
1939 | { |
1324 | #if EV_MULTIPLICITY |
|
|
1325 | EV_P = signals [signum - 1].loop; |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | #ifdef _WIN32 |
1940 | #ifdef _WIN32 |
1329 | signal (signum, ev_sighandler); |
1941 | signal (signum, ev_sighandler); |
1330 | #endif |
1942 | #endif |
1331 | |
1943 | |
1332 | signals [signum - 1].pending = 1; |
1944 | ev_feed_signal (signum); |
1333 | evpipe_write (EV_A_ &sig_pending); |
|
|
1334 | } |
1945 | } |
1335 | |
1946 | |
1336 | void noinline |
1947 | void noinline |
1337 | ev_feed_signal_event (EV_P_ int signum) |
1948 | ev_feed_signal_event (EV_P_ int signum) |
1338 | { |
1949 | { |
… | |
… | |
1438 | |
2049 | |
1439 | #endif |
2050 | #endif |
1440 | |
2051 | |
1441 | /*****************************************************************************/ |
2052 | /*****************************************************************************/ |
1442 | |
2053 | |
|
|
2054 | #if EV_USE_IOCP |
|
|
2055 | # include "ev_iocp.c" |
|
|
2056 | #endif |
1443 | #if EV_USE_PORT |
2057 | #if EV_USE_PORT |
1444 | # include "ev_port.c" |
2058 | # include "ev_port.c" |
1445 | #endif |
2059 | #endif |
1446 | #if EV_USE_KQUEUE |
2060 | #if EV_USE_KQUEUE |
1447 | # include "ev_kqueue.c" |
2061 | # include "ev_kqueue.c" |
… | |
… | |
1454 | #endif |
2068 | #endif |
1455 | #if EV_USE_SELECT |
2069 | #if EV_USE_SELECT |
1456 | # include "ev_select.c" |
2070 | # include "ev_select.c" |
1457 | #endif |
2071 | #endif |
1458 | |
2072 | |
1459 | int |
2073 | int ecb_cold |
1460 | ev_version_major (void) |
2074 | ev_version_major (void) |
1461 | { |
2075 | { |
1462 | return EV_VERSION_MAJOR; |
2076 | return EV_VERSION_MAJOR; |
1463 | } |
2077 | } |
1464 | |
2078 | |
1465 | int |
2079 | int ecb_cold |
1466 | ev_version_minor (void) |
2080 | ev_version_minor (void) |
1467 | { |
2081 | { |
1468 | return EV_VERSION_MINOR; |
2082 | return EV_VERSION_MINOR; |
1469 | } |
2083 | } |
1470 | |
2084 | |
1471 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2085 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1472 | int inline_size |
2086 | int inline_size ecb_cold |
1473 | enable_secure (void) |
2087 | enable_secure (void) |
1474 | { |
2088 | { |
1475 | #ifdef _WIN32 |
2089 | #ifdef _WIN32 |
1476 | return 0; |
2090 | return 0; |
1477 | #else |
2091 | #else |
1478 | return getuid () != geteuid () |
2092 | return getuid () != geteuid () |
1479 | || getgid () != getegid (); |
2093 | || getgid () != getegid (); |
1480 | #endif |
2094 | #endif |
1481 | } |
2095 | } |
1482 | |
2096 | |
1483 | unsigned int |
2097 | unsigned int ecb_cold |
1484 | ev_supported_backends (void) |
2098 | ev_supported_backends (void) |
1485 | { |
2099 | { |
1486 | unsigned int flags = 0; |
2100 | unsigned int flags = 0; |
1487 | |
2101 | |
1488 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2102 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1492 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2106 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1493 | |
2107 | |
1494 | return flags; |
2108 | return flags; |
1495 | } |
2109 | } |
1496 | |
2110 | |
1497 | unsigned int |
2111 | unsigned int ecb_cold |
1498 | ev_recommended_backends (void) |
2112 | ev_recommended_backends (void) |
1499 | { |
2113 | { |
1500 | unsigned int flags = ev_supported_backends (); |
2114 | unsigned int flags = ev_supported_backends (); |
1501 | |
2115 | |
1502 | #ifndef __NetBSD__ |
2116 | #ifndef __NetBSD__ |
… | |
… | |
1507 | #ifdef __APPLE__ |
2121 | #ifdef __APPLE__ |
1508 | /* only select works correctly on that "unix-certified" platform */ |
2122 | /* only select works correctly on that "unix-certified" platform */ |
1509 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
2123 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
1510 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
2124 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1511 | #endif |
2125 | #endif |
|
|
2126 | #ifdef __FreeBSD__ |
|
|
2127 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2128 | #endif |
1512 | |
2129 | |
1513 | return flags; |
2130 | return flags; |
1514 | } |
2131 | } |
1515 | |
2132 | |
1516 | unsigned int |
2133 | unsigned int ecb_cold |
1517 | ev_embeddable_backends (void) |
2134 | ev_embeddable_backends (void) |
1518 | { |
2135 | { |
1519 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2136 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1520 | |
2137 | |
1521 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2138 | /* 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 */ |
2139 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1523 | flags &= ~EVBACKEND_EPOLL; |
2140 | flags &= ~EVBACKEND_EPOLL; |
1524 | |
2141 | |
1525 | return flags; |
2142 | return flags; |
1526 | } |
2143 | } |
1527 | |
2144 | |
1528 | unsigned int |
2145 | unsigned int |
… | |
… | |
1531 | return backend; |
2148 | return backend; |
1532 | } |
2149 | } |
1533 | |
2150 | |
1534 | #if EV_FEATURE_API |
2151 | #if EV_FEATURE_API |
1535 | unsigned int |
2152 | unsigned int |
1536 | ev_loop_count (EV_P) |
2153 | ev_iteration (EV_P) |
1537 | { |
2154 | { |
1538 | return loop_count; |
2155 | return loop_count; |
1539 | } |
2156 | } |
1540 | |
2157 | |
1541 | unsigned int |
2158 | unsigned int |
1542 | ev_loop_depth (EV_P) |
2159 | ev_depth (EV_P) |
1543 | { |
2160 | { |
1544 | return loop_depth; |
2161 | return loop_depth; |
1545 | } |
2162 | } |
1546 | |
2163 | |
1547 | void |
2164 | void |
… | |
… | |
1566 | ev_userdata (EV_P) |
2183 | ev_userdata (EV_P) |
1567 | { |
2184 | { |
1568 | return userdata; |
2185 | return userdata; |
1569 | } |
2186 | } |
1570 | |
2187 | |
|
|
2188 | void |
1571 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2189 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1572 | { |
2190 | { |
1573 | invoke_cb = invoke_pending_cb; |
2191 | invoke_cb = invoke_pending_cb; |
1574 | } |
2192 | } |
1575 | |
2193 | |
|
|
2194 | void |
1576 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2195 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1577 | { |
2196 | { |
1578 | release_cb = release; |
2197 | release_cb = release; |
1579 | acquire_cb = acquire; |
2198 | acquire_cb = acquire; |
1580 | } |
2199 | } |
1581 | #endif |
2200 | #endif |
1582 | |
2201 | |
1583 | /* initialise a loop structure, must be zero-initialised */ |
2202 | /* initialise a loop structure, must be zero-initialised */ |
1584 | static void noinline |
2203 | static void noinline ecb_cold |
1585 | loop_init (EV_P_ unsigned int flags) |
2204 | loop_init (EV_P_ unsigned int flags) |
1586 | { |
2205 | { |
1587 | if (!backend) |
2206 | if (!backend) |
1588 | { |
2207 | { |
|
|
2208 | origflags = flags; |
|
|
2209 | |
1589 | #if EV_USE_REALTIME |
2210 | #if EV_USE_REALTIME |
1590 | if (!have_realtime) |
2211 | if (!have_realtime) |
1591 | { |
2212 | { |
1592 | struct timespec ts; |
2213 | struct timespec ts; |
1593 | |
2214 | |
… | |
… | |
1615 | if (!(flags & EVFLAG_NOENV) |
2236 | if (!(flags & EVFLAG_NOENV) |
1616 | && !enable_secure () |
2237 | && !enable_secure () |
1617 | && getenv ("LIBEV_FLAGS")) |
2238 | && getenv ("LIBEV_FLAGS")) |
1618 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2239 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1619 | |
2240 | |
1620 | ev_rt_now = ev_time (); |
2241 | ev_rt_now = ev_time (); |
1621 | mn_now = get_clock (); |
2242 | mn_now = get_clock (); |
1622 | now_floor = mn_now; |
2243 | now_floor = mn_now; |
1623 | rtmn_diff = ev_rt_now - mn_now; |
2244 | rtmn_diff = ev_rt_now - mn_now; |
1624 | #if EV_FEATURE_API |
2245 | #if EV_FEATURE_API |
1625 | invoke_cb = ev_invoke_pending; |
2246 | invoke_cb = ev_invoke_pending; |
1626 | #endif |
2247 | #endif |
1627 | |
2248 | |
1628 | io_blocktime = 0.; |
2249 | io_blocktime = 0.; |
1629 | timeout_blocktime = 0.; |
2250 | timeout_blocktime = 0.; |
1630 | backend = 0; |
2251 | backend = 0; |
1631 | backend_fd = -1; |
2252 | backend_fd = -1; |
1632 | sig_pending = 0; |
2253 | sig_pending = 0; |
1633 | #if EV_ASYNC_ENABLE |
2254 | #if EV_ASYNC_ENABLE |
1634 | async_pending = 0; |
2255 | async_pending = 0; |
1635 | #endif |
2256 | #endif |
|
|
2257 | pipe_write_skipped = 0; |
|
|
2258 | pipe_write_wanted = 0; |
1636 | #if EV_USE_INOTIFY |
2259 | #if EV_USE_INOTIFY |
1637 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2260 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1638 | #endif |
2261 | #endif |
1639 | #if EV_USE_SIGNALFD |
2262 | #if EV_USE_SIGNALFD |
1640 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2263 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1641 | #endif |
2264 | #endif |
1642 | |
2265 | |
1643 | if (!(flags & 0x0000ffffU)) |
2266 | if (!(flags & EVBACKEND_MASK)) |
1644 | flags |= ev_recommended_backends (); |
2267 | flags |= ev_recommended_backends (); |
1645 | |
2268 | |
|
|
2269 | #if EV_USE_IOCP |
|
|
2270 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2271 | #endif |
1646 | #if EV_USE_PORT |
2272 | #if EV_USE_PORT |
1647 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
2273 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1648 | #endif |
2274 | #endif |
1649 | #if EV_USE_KQUEUE |
2275 | #if EV_USE_KQUEUE |
1650 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
2276 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1667 | #endif |
2293 | #endif |
1668 | } |
2294 | } |
1669 | } |
2295 | } |
1670 | |
2296 | |
1671 | /* free up a loop structure */ |
2297 | /* free up a loop structure */ |
1672 | static void noinline |
2298 | void ecb_cold |
1673 | loop_destroy (EV_P) |
2299 | ev_loop_destroy (EV_P) |
1674 | { |
2300 | { |
1675 | int i; |
2301 | int i; |
|
|
2302 | |
|
|
2303 | #if EV_MULTIPLICITY |
|
|
2304 | /* mimic free (0) */ |
|
|
2305 | if (!EV_A) |
|
|
2306 | return; |
|
|
2307 | #endif |
|
|
2308 | |
|
|
2309 | #if EV_CLEANUP_ENABLE |
|
|
2310 | /* queue cleanup watchers (and execute them) */ |
|
|
2311 | if (expect_false (cleanupcnt)) |
|
|
2312 | { |
|
|
2313 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2314 | EV_INVOKE_PENDING; |
|
|
2315 | } |
|
|
2316 | #endif |
|
|
2317 | |
|
|
2318 | #if EV_CHILD_ENABLE |
|
|
2319 | if (ev_is_active (&childev)) |
|
|
2320 | { |
|
|
2321 | ev_ref (EV_A); /* child watcher */ |
|
|
2322 | ev_signal_stop (EV_A_ &childev); |
|
|
2323 | } |
|
|
2324 | #endif |
1676 | |
2325 | |
1677 | if (ev_is_active (&pipe_w)) |
2326 | if (ev_is_active (&pipe_w)) |
1678 | { |
2327 | { |
1679 | /*ev_ref (EV_A);*/ |
2328 | /*ev_ref (EV_A);*/ |
1680 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2329 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1702 | #endif |
2351 | #endif |
1703 | |
2352 | |
1704 | if (backend_fd >= 0) |
2353 | if (backend_fd >= 0) |
1705 | close (backend_fd); |
2354 | close (backend_fd); |
1706 | |
2355 | |
|
|
2356 | #if EV_USE_IOCP |
|
|
2357 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2358 | #endif |
1707 | #if EV_USE_PORT |
2359 | #if EV_USE_PORT |
1708 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
2360 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1709 | #endif |
2361 | #endif |
1710 | #if EV_USE_KQUEUE |
2362 | #if EV_USE_KQUEUE |
1711 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
2363 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1738 | array_free (periodic, EMPTY); |
2390 | array_free (periodic, EMPTY); |
1739 | #endif |
2391 | #endif |
1740 | #if EV_FORK_ENABLE |
2392 | #if EV_FORK_ENABLE |
1741 | array_free (fork, EMPTY); |
2393 | array_free (fork, EMPTY); |
1742 | #endif |
2394 | #endif |
|
|
2395 | #if EV_CLEANUP_ENABLE |
|
|
2396 | array_free (cleanup, EMPTY); |
|
|
2397 | #endif |
1743 | array_free (prepare, EMPTY); |
2398 | array_free (prepare, EMPTY); |
1744 | array_free (check, EMPTY); |
2399 | array_free (check, EMPTY); |
1745 | #if EV_ASYNC_ENABLE |
2400 | #if EV_ASYNC_ENABLE |
1746 | array_free (async, EMPTY); |
2401 | array_free (async, EMPTY); |
1747 | #endif |
2402 | #endif |
1748 | |
2403 | |
1749 | backend = 0; |
2404 | backend = 0; |
|
|
2405 | |
|
|
2406 | #if EV_MULTIPLICITY |
|
|
2407 | if (ev_is_default_loop (EV_A)) |
|
|
2408 | #endif |
|
|
2409 | ev_default_loop_ptr = 0; |
|
|
2410 | #if EV_MULTIPLICITY |
|
|
2411 | else |
|
|
2412 | ev_free (EV_A); |
|
|
2413 | #endif |
1750 | } |
2414 | } |
1751 | |
2415 | |
1752 | #if EV_USE_INOTIFY |
2416 | #if EV_USE_INOTIFY |
1753 | inline_size void infy_fork (EV_P); |
2417 | inline_size void infy_fork (EV_P); |
1754 | #endif |
2418 | #endif |
… | |
… | |
1769 | infy_fork (EV_A); |
2433 | infy_fork (EV_A); |
1770 | #endif |
2434 | #endif |
1771 | |
2435 | |
1772 | if (ev_is_active (&pipe_w)) |
2436 | if (ev_is_active (&pipe_w)) |
1773 | { |
2437 | { |
1774 | /* this "locks" the handlers against writing to the pipe */ |
2438 | /* 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 | |
2439 | |
1781 | ev_ref (EV_A); |
2440 | ev_ref (EV_A); |
1782 | ev_io_stop (EV_A_ &pipe_w); |
2441 | ev_io_stop (EV_A_ &pipe_w); |
1783 | |
2442 | |
1784 | #if EV_USE_EVENTFD |
2443 | #if EV_USE_EVENTFD |
… | |
… | |
1802 | postfork = 0; |
2461 | postfork = 0; |
1803 | } |
2462 | } |
1804 | |
2463 | |
1805 | #if EV_MULTIPLICITY |
2464 | #if EV_MULTIPLICITY |
1806 | |
2465 | |
1807 | struct ev_loop * |
2466 | struct ev_loop * ecb_cold |
1808 | ev_loop_new (unsigned int flags) |
2467 | ev_loop_new (unsigned int flags) |
1809 | { |
2468 | { |
1810 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2469 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1811 | |
2470 | |
1812 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2471 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1813 | loop_init (EV_A_ flags); |
2472 | loop_init (EV_A_ flags); |
1814 | |
2473 | |
1815 | if (ev_backend (EV_A)) |
2474 | if (ev_backend (EV_A)) |
1816 | return EV_A; |
2475 | return EV_A; |
1817 | |
2476 | |
|
|
2477 | ev_free (EV_A); |
1818 | return 0; |
2478 | return 0; |
1819 | } |
2479 | } |
1820 | |
2480 | |
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 */ |
2481 | #endif /* multiplicity */ |
1834 | |
2482 | |
1835 | #if EV_VERIFY |
2483 | #if EV_VERIFY |
1836 | static void noinline |
2484 | static void noinline ecb_cold |
1837 | verify_watcher (EV_P_ W w) |
2485 | verify_watcher (EV_P_ W w) |
1838 | { |
2486 | { |
1839 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2487 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1840 | |
2488 | |
1841 | if (w->pending) |
2489 | if (w->pending) |
1842 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2490 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1843 | } |
2491 | } |
1844 | |
2492 | |
1845 | static void noinline |
2493 | static void noinline ecb_cold |
1846 | verify_heap (EV_P_ ANHE *heap, int N) |
2494 | verify_heap (EV_P_ ANHE *heap, int N) |
1847 | { |
2495 | { |
1848 | int i; |
2496 | int i; |
1849 | |
2497 | |
1850 | for (i = HEAP0; i < N + HEAP0; ++i) |
2498 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1855 | |
2503 | |
1856 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2504 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1857 | } |
2505 | } |
1858 | } |
2506 | } |
1859 | |
2507 | |
1860 | static void noinline |
2508 | static void noinline ecb_cold |
1861 | array_verify (EV_P_ W *ws, int cnt) |
2509 | array_verify (EV_P_ W *ws, int cnt) |
1862 | { |
2510 | { |
1863 | while (cnt--) |
2511 | while (cnt--) |
1864 | { |
2512 | { |
1865 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2513 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1867 | } |
2515 | } |
1868 | } |
2516 | } |
1869 | #endif |
2517 | #endif |
1870 | |
2518 | |
1871 | #if EV_FEATURE_API |
2519 | #if EV_FEATURE_API |
1872 | void |
2520 | void ecb_cold |
1873 | ev_loop_verify (EV_P) |
2521 | ev_verify (EV_P) |
1874 | { |
2522 | { |
1875 | #if EV_VERIFY |
2523 | #if EV_VERIFY |
1876 | int i; |
2524 | int i; |
1877 | WL w; |
2525 | WL w; |
1878 | |
2526 | |
… | |
… | |
1912 | #if EV_FORK_ENABLE |
2560 | #if EV_FORK_ENABLE |
1913 | assert (forkmax >= forkcnt); |
2561 | assert (forkmax >= forkcnt); |
1914 | array_verify (EV_A_ (W *)forks, forkcnt); |
2562 | array_verify (EV_A_ (W *)forks, forkcnt); |
1915 | #endif |
2563 | #endif |
1916 | |
2564 | |
|
|
2565 | #if EV_CLEANUP_ENABLE |
|
|
2566 | assert (cleanupmax >= cleanupcnt); |
|
|
2567 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2568 | #endif |
|
|
2569 | |
1917 | #if EV_ASYNC_ENABLE |
2570 | #if EV_ASYNC_ENABLE |
1918 | assert (asyncmax >= asynccnt); |
2571 | assert (asyncmax >= asynccnt); |
1919 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2572 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1920 | #endif |
2573 | #endif |
1921 | |
2574 | |
… | |
… | |
1938 | #endif |
2591 | #endif |
1939 | } |
2592 | } |
1940 | #endif |
2593 | #endif |
1941 | |
2594 | |
1942 | #if EV_MULTIPLICITY |
2595 | #if EV_MULTIPLICITY |
1943 | struct ev_loop * |
2596 | struct ev_loop * ecb_cold |
1944 | ev_default_loop_init (unsigned int flags) |
|
|
1945 | #else |
2597 | #else |
1946 | int |
2598 | int |
|
|
2599 | #endif |
1947 | ev_default_loop (unsigned int flags) |
2600 | ev_default_loop (unsigned int flags) |
1948 | #endif |
|
|
1949 | { |
2601 | { |
1950 | if (!ev_default_loop_ptr) |
2602 | if (!ev_default_loop_ptr) |
1951 | { |
2603 | { |
1952 | #if EV_MULTIPLICITY |
2604 | #if EV_MULTIPLICITY |
1953 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2605 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1972 | |
2624 | |
1973 | return ev_default_loop_ptr; |
2625 | return ev_default_loop_ptr; |
1974 | } |
2626 | } |
1975 | |
2627 | |
1976 | void |
2628 | void |
1977 | ev_default_destroy (void) |
2629 | ev_loop_fork (EV_P) |
1978 | { |
2630 | { |
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 */ |
2631 | postfork = 1; /* must be in line with ev_default_fork */ |
2001 | } |
2632 | } |
2002 | |
2633 | |
2003 | /*****************************************************************************/ |
2634 | /*****************************************************************************/ |
2004 | |
2635 | |
2005 | void |
2636 | void |
… | |
… | |
2027 | |
2658 | |
2028 | for (pri = NUMPRI; pri--; ) |
2659 | for (pri = NUMPRI; pri--; ) |
2029 | while (pendingcnt [pri]) |
2660 | while (pendingcnt [pri]) |
2030 | { |
2661 | { |
2031 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2662 | 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 | |
2663 | |
2036 | p->w->pending = 0; |
2664 | p->w->pending = 0; |
2037 | EV_CB_INVOKE (p->w, p->events); |
2665 | EV_CB_INVOKE (p->w, p->events); |
2038 | EV_FREQUENT_CHECK; |
2666 | EV_FREQUENT_CHECK; |
2039 | } |
2667 | } |
… | |
… | |
2096 | EV_FREQUENT_CHECK; |
2724 | EV_FREQUENT_CHECK; |
2097 | feed_reverse (EV_A_ (W)w); |
2725 | feed_reverse (EV_A_ (W)w); |
2098 | } |
2726 | } |
2099 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2727 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
2100 | |
2728 | |
2101 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
2729 | feed_reverse_done (EV_A_ EV_TIMER); |
2102 | } |
2730 | } |
2103 | } |
2731 | } |
2104 | |
2732 | |
2105 | #if EV_PERIODIC_ENABLE |
2733 | #if EV_PERIODIC_ENABLE |
|
|
2734 | |
|
|
2735 | static void noinline |
|
|
2736 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2737 | { |
|
|
2738 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2739 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2740 | |
|
|
2741 | /* the above almost always errs on the low side */ |
|
|
2742 | while (at <= ev_rt_now) |
|
|
2743 | { |
|
|
2744 | ev_tstamp nat = at + w->interval; |
|
|
2745 | |
|
|
2746 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2747 | if (expect_false (nat == at)) |
|
|
2748 | { |
|
|
2749 | at = ev_rt_now; |
|
|
2750 | break; |
|
|
2751 | } |
|
|
2752 | |
|
|
2753 | at = nat; |
|
|
2754 | } |
|
|
2755 | |
|
|
2756 | ev_at (w) = at; |
|
|
2757 | } |
|
|
2758 | |
2106 | /* make periodics pending */ |
2759 | /* make periodics pending */ |
2107 | inline_size void |
2760 | inline_size void |
2108 | periodics_reify (EV_P) |
2761 | periodics_reify (EV_P) |
2109 | { |
2762 | { |
2110 | EV_FREQUENT_CHECK; |
2763 | EV_FREQUENT_CHECK; |
… | |
… | |
2129 | ANHE_at_cache (periodics [HEAP0]); |
2782 | ANHE_at_cache (periodics [HEAP0]); |
2130 | downheap (periodics, periodiccnt, HEAP0); |
2783 | downheap (periodics, periodiccnt, HEAP0); |
2131 | } |
2784 | } |
2132 | else if (w->interval) |
2785 | else if (w->interval) |
2133 | { |
2786 | { |
2134 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2787 | 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]); |
2788 | ANHE_at_cache (periodics [HEAP0]); |
2149 | downheap (periodics, periodiccnt, HEAP0); |
2789 | downheap (periodics, periodiccnt, HEAP0); |
2150 | } |
2790 | } |
2151 | else |
2791 | else |
2152 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2792 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2159 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2799 | feed_reverse_done (EV_A_ EV_PERIODIC); |
2160 | } |
2800 | } |
2161 | } |
2801 | } |
2162 | |
2802 | |
2163 | /* simply recalculate all periodics */ |
2803 | /* simply recalculate all periodics */ |
2164 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
2804 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2165 | static void noinline |
2805 | static void noinline ecb_cold |
2166 | periodics_reschedule (EV_P) |
2806 | periodics_reschedule (EV_P) |
2167 | { |
2807 | { |
2168 | int i; |
2808 | int i; |
2169 | |
2809 | |
2170 | /* adjust periodics after time jump */ |
2810 | /* adjust periodics after time jump */ |
… | |
… | |
2173 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2813 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2174 | |
2814 | |
2175 | if (w->reschedule_cb) |
2815 | if (w->reschedule_cb) |
2176 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2816 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2177 | else if (w->interval) |
2817 | else if (w->interval) |
2178 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2818 | periodic_recalc (EV_A_ w); |
2179 | |
2819 | |
2180 | ANHE_at_cache (periodics [i]); |
2820 | ANHE_at_cache (periodics [i]); |
2181 | } |
2821 | } |
2182 | |
2822 | |
2183 | reheap (periodics, periodiccnt); |
2823 | reheap (periodics, periodiccnt); |
2184 | } |
2824 | } |
2185 | #endif |
2825 | #endif |
2186 | |
2826 | |
2187 | /* adjust all timers by a given offset */ |
2827 | /* adjust all timers by a given offset */ |
2188 | static void noinline |
2828 | static void noinline ecb_cold |
2189 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2829 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2190 | { |
2830 | { |
2191 | int i; |
2831 | int i; |
2192 | |
2832 | |
2193 | for (i = 0; i < timercnt; ++i) |
2833 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2230 | * doesn't hurt either as we only do this on time-jumps or |
2870 | * doesn't hurt either as we only do this on time-jumps or |
2231 | * in the unlikely event of having been preempted here. |
2871 | * in the unlikely event of having been preempted here. |
2232 | */ |
2872 | */ |
2233 | for (i = 4; --i; ) |
2873 | for (i = 4; --i; ) |
2234 | { |
2874 | { |
|
|
2875 | ev_tstamp diff; |
2235 | rtmn_diff = ev_rt_now - mn_now; |
2876 | rtmn_diff = ev_rt_now - mn_now; |
2236 | |
2877 | |
|
|
2878 | diff = odiff - rtmn_diff; |
|
|
2879 | |
2237 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2880 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2238 | return; /* all is well */ |
2881 | return; /* all is well */ |
2239 | |
2882 | |
2240 | ev_rt_now = ev_time (); |
2883 | ev_rt_now = ev_time (); |
2241 | mn_now = get_clock (); |
2884 | mn_now = get_clock (); |
2242 | now_floor = mn_now; |
2885 | now_floor = mn_now; |
… | |
… | |
2265 | mn_now = ev_rt_now; |
2908 | mn_now = ev_rt_now; |
2266 | } |
2909 | } |
2267 | } |
2910 | } |
2268 | |
2911 | |
2269 | void |
2912 | void |
2270 | ev_loop (EV_P_ int flags) |
2913 | ev_run (EV_P_ int flags) |
2271 | { |
2914 | { |
2272 | #if EV_FEATURE_API |
2915 | #if EV_FEATURE_API |
2273 | ++loop_depth; |
2916 | ++loop_depth; |
2274 | #endif |
2917 | #endif |
2275 | |
2918 | |
2276 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2919 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2277 | |
2920 | |
2278 | loop_done = EVUNLOOP_CANCEL; |
2921 | loop_done = EVBREAK_CANCEL; |
2279 | |
2922 | |
2280 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2923 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2281 | |
2924 | |
2282 | do |
2925 | do |
2283 | { |
2926 | { |
2284 | #if EV_VERIFY >= 2 |
2927 | #if EV_VERIFY >= 2 |
2285 | ev_loop_verify (EV_A); |
2928 | ev_verify (EV_A); |
2286 | #endif |
2929 | #endif |
2287 | |
2930 | |
2288 | #ifndef _WIN32 |
2931 | #ifndef _WIN32 |
2289 | if (expect_false (curpid)) /* penalise the forking check even more */ |
2932 | if (expect_false (curpid)) /* penalise the forking check even more */ |
2290 | if (expect_false (getpid () != curpid)) |
2933 | if (expect_false (getpid () != curpid)) |
… | |
… | |
2326 | /* calculate blocking time */ |
2969 | /* calculate blocking time */ |
2327 | { |
2970 | { |
2328 | ev_tstamp waittime = 0.; |
2971 | ev_tstamp waittime = 0.; |
2329 | ev_tstamp sleeptime = 0.; |
2972 | ev_tstamp sleeptime = 0.; |
2330 | |
2973 | |
|
|
2974 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2975 | ev_tstamp prev_mn_now = mn_now; |
|
|
2976 | |
|
|
2977 | /* update time to cancel out callback processing overhead */ |
|
|
2978 | time_update (EV_A_ 1e100); |
|
|
2979 | |
|
|
2980 | /* from now on, we want a pipe-wake-up */ |
|
|
2981 | pipe_write_wanted = 1; |
|
|
2982 | |
|
|
2983 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2984 | |
2331 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
2985 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2332 | { |
2986 | { |
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; |
2987 | waittime = MAX_BLOCKTIME; |
2340 | |
2988 | |
2341 | if (timercnt) |
2989 | if (timercnt) |
2342 | { |
2990 | { |
2343 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2991 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2344 | if (waittime > to) waittime = to; |
2992 | if (waittime > to) waittime = to; |
2345 | } |
2993 | } |
2346 | |
2994 | |
2347 | #if EV_PERIODIC_ENABLE |
2995 | #if EV_PERIODIC_ENABLE |
2348 | if (periodiccnt) |
2996 | if (periodiccnt) |
2349 | { |
2997 | { |
2350 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2998 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2351 | if (waittime > to) waittime = to; |
2999 | if (waittime > to) waittime = to; |
2352 | } |
3000 | } |
2353 | #endif |
3001 | #endif |
2354 | |
3002 | |
2355 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
3003 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2356 | if (expect_false (waittime < timeout_blocktime)) |
3004 | if (expect_false (waittime < timeout_blocktime)) |
2357 | waittime = timeout_blocktime; |
3005 | waittime = timeout_blocktime; |
|
|
3006 | |
|
|
3007 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3008 | /* to pass a minimum nonzero value to the backend */ |
|
|
3009 | if (expect_false (waittime < backend_mintime)) |
|
|
3010 | waittime = backend_mintime; |
2358 | |
3011 | |
2359 | /* extra check because io_blocktime is commonly 0 */ |
3012 | /* extra check because io_blocktime is commonly 0 */ |
2360 | if (expect_false (io_blocktime)) |
3013 | if (expect_false (io_blocktime)) |
2361 | { |
3014 | { |
2362 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
3015 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2363 | |
3016 | |
2364 | if (sleeptime > waittime - backend_fudge) |
3017 | if (sleeptime > waittime - backend_mintime) |
2365 | sleeptime = waittime - backend_fudge; |
3018 | sleeptime = waittime - backend_mintime; |
2366 | |
3019 | |
2367 | if (expect_true (sleeptime > 0.)) |
3020 | if (expect_true (sleeptime > 0.)) |
2368 | { |
3021 | { |
2369 | ev_sleep (sleeptime); |
3022 | ev_sleep (sleeptime); |
2370 | waittime -= sleeptime; |
3023 | waittime -= sleeptime; |
… | |
… | |
2373 | } |
3026 | } |
2374 | |
3027 | |
2375 | #if EV_FEATURE_API |
3028 | #if EV_FEATURE_API |
2376 | ++loop_count; |
3029 | ++loop_count; |
2377 | #endif |
3030 | #endif |
2378 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
3031 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2379 | backend_poll (EV_A_ waittime); |
3032 | backend_poll (EV_A_ waittime); |
2380 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
3033 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3034 | |
|
|
3035 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3036 | |
|
|
3037 | if (pipe_write_skipped) |
|
|
3038 | { |
|
|
3039 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3040 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3041 | } |
|
|
3042 | |
2381 | |
3043 | |
2382 | /* update ev_rt_now, do magic */ |
3044 | /* update ev_rt_now, do magic */ |
2383 | time_update (EV_A_ waittime + sleeptime); |
3045 | time_update (EV_A_ waittime + sleeptime); |
2384 | } |
3046 | } |
2385 | |
3047 | |
… | |
… | |
2403 | EV_INVOKE_PENDING; |
3065 | EV_INVOKE_PENDING; |
2404 | } |
3066 | } |
2405 | while (expect_true ( |
3067 | while (expect_true ( |
2406 | activecnt |
3068 | activecnt |
2407 | && !loop_done |
3069 | && !loop_done |
2408 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
3070 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2409 | )); |
3071 | )); |
2410 | |
3072 | |
2411 | if (loop_done == EVUNLOOP_ONE) |
3073 | if (loop_done == EVBREAK_ONE) |
2412 | loop_done = EVUNLOOP_CANCEL; |
3074 | loop_done = EVBREAK_CANCEL; |
2413 | |
3075 | |
2414 | #if EV_FEATURE_API |
3076 | #if EV_FEATURE_API |
2415 | --loop_depth; |
3077 | --loop_depth; |
2416 | #endif |
3078 | #endif |
2417 | } |
3079 | } |
2418 | |
3080 | |
2419 | void |
3081 | void |
2420 | ev_unloop (EV_P_ int how) |
3082 | ev_break (EV_P_ int how) |
2421 | { |
3083 | { |
2422 | loop_done = how; |
3084 | loop_done = how; |
2423 | } |
3085 | } |
2424 | |
3086 | |
2425 | void |
3087 | void |
… | |
… | |
2573 | EV_FREQUENT_CHECK; |
3235 | EV_FREQUENT_CHECK; |
2574 | |
3236 | |
2575 | wlist_del (&anfds[w->fd].head, (WL)w); |
3237 | wlist_del (&anfds[w->fd].head, (WL)w); |
2576 | ev_stop (EV_A_ (W)w); |
3238 | ev_stop (EV_A_ (W)w); |
2577 | |
3239 | |
2578 | fd_change (EV_A_ w->fd, 1); |
3240 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2579 | |
3241 | |
2580 | EV_FREQUENT_CHECK; |
3242 | EV_FREQUENT_CHECK; |
2581 | } |
3243 | } |
2582 | |
3244 | |
2583 | void noinline |
3245 | void noinline |
… | |
… | |
2675 | if (w->reschedule_cb) |
3337 | if (w->reschedule_cb) |
2676 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3338 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2677 | else if (w->interval) |
3339 | else if (w->interval) |
2678 | { |
3340 | { |
2679 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3341 | 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 */ |
3342 | periodic_recalc (EV_A_ w); |
2681 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2682 | } |
3343 | } |
2683 | else |
3344 | else |
2684 | ev_at (w) = w->offset; |
3345 | ev_at (w) = w->offset; |
2685 | |
3346 | |
2686 | EV_FREQUENT_CHECK; |
3347 | EV_FREQUENT_CHECK; |
… | |
… | |
2807 | sa.sa_handler = ev_sighandler; |
3468 | sa.sa_handler = ev_sighandler; |
2808 | sigfillset (&sa.sa_mask); |
3469 | sigfillset (&sa.sa_mask); |
2809 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
3470 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2810 | sigaction (w->signum, &sa, 0); |
3471 | sigaction (w->signum, &sa, 0); |
2811 | |
3472 | |
|
|
3473 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3474 | { |
2812 | sigemptyset (&sa.sa_mask); |
3475 | sigemptyset (&sa.sa_mask); |
2813 | sigaddset (&sa.sa_mask, w->signum); |
3476 | sigaddset (&sa.sa_mask, w->signum); |
2814 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
3477 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3478 | } |
2815 | #endif |
3479 | #endif |
2816 | } |
3480 | } |
2817 | |
3481 | |
2818 | EV_FREQUENT_CHECK; |
3482 | EV_FREQUENT_CHECK; |
2819 | } |
3483 | } |
… | |
… | |
2960 | if (!pend || pend == path) |
3624 | if (!pend || pend == path) |
2961 | break; |
3625 | break; |
2962 | |
3626 | |
2963 | *pend = 0; |
3627 | *pend = 0; |
2964 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3628 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2965 | } |
3629 | } |
2966 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3630 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2967 | } |
3631 | } |
2968 | } |
3632 | } |
2969 | |
3633 | |
2970 | if (w->wd >= 0) |
3634 | if (w->wd >= 0) |
… | |
… | |
3037 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3701 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3038 | ofs += sizeof (struct inotify_event) + ev->len; |
3702 | ofs += sizeof (struct inotify_event) + ev->len; |
3039 | } |
3703 | } |
3040 | } |
3704 | } |
3041 | |
3705 | |
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 |
3706 | inline_size void ecb_cold |
3075 | ev_check_2625 (EV_P) |
3707 | ev_check_2625 (EV_P) |
3076 | { |
3708 | { |
3077 | /* kernels < 2.6.25 are borked |
3709 | /* kernels < 2.6.25 are borked |
3078 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3710 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3079 | */ |
3711 | */ |
… | |
… | |
3400 | |
4032 | |
3401 | #if EV_EMBED_ENABLE |
4033 | #if EV_EMBED_ENABLE |
3402 | void noinline |
4034 | void noinline |
3403 | ev_embed_sweep (EV_P_ ev_embed *w) |
4035 | ev_embed_sweep (EV_P_ ev_embed *w) |
3404 | { |
4036 | { |
3405 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4037 | ev_run (w->other, EVRUN_NOWAIT); |
3406 | } |
4038 | } |
3407 | |
4039 | |
3408 | static void |
4040 | static void |
3409 | embed_io_cb (EV_P_ ev_io *io, int revents) |
4041 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3410 | { |
4042 | { |
3411 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
4043 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3412 | |
4044 | |
3413 | if (ev_cb (w)) |
4045 | if (ev_cb (w)) |
3414 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
4046 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3415 | else |
4047 | else |
3416 | ev_loop (w->other, EVLOOP_NONBLOCK); |
4048 | ev_run (w->other, EVRUN_NOWAIT); |
3417 | } |
4049 | } |
3418 | |
4050 | |
3419 | static void |
4051 | static void |
3420 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
4052 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3421 | { |
4053 | { |
… | |
… | |
3425 | EV_P = w->other; |
4057 | EV_P = w->other; |
3426 | |
4058 | |
3427 | while (fdchangecnt) |
4059 | while (fdchangecnt) |
3428 | { |
4060 | { |
3429 | fd_reify (EV_A); |
4061 | fd_reify (EV_A); |
3430 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
4062 | ev_run (EV_A_ EVRUN_NOWAIT); |
3431 | } |
4063 | } |
3432 | } |
4064 | } |
3433 | } |
4065 | } |
3434 | |
4066 | |
3435 | static void |
4067 | static void |
… | |
… | |
3441 | |
4073 | |
3442 | { |
4074 | { |
3443 | EV_P = w->other; |
4075 | EV_P = w->other; |
3444 | |
4076 | |
3445 | ev_loop_fork (EV_A); |
4077 | ev_loop_fork (EV_A); |
3446 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
4078 | ev_run (EV_A_ EVRUN_NOWAIT); |
3447 | } |
4079 | } |
3448 | |
4080 | |
3449 | ev_embed_start (EV_A_ w); |
4081 | ev_embed_start (EV_A_ w); |
3450 | } |
4082 | } |
3451 | |
4083 | |
… | |
… | |
3543 | |
4175 | |
3544 | EV_FREQUENT_CHECK; |
4176 | EV_FREQUENT_CHECK; |
3545 | } |
4177 | } |
3546 | #endif |
4178 | #endif |
3547 | |
4179 | |
|
|
4180 | #if EV_CLEANUP_ENABLE |
|
|
4181 | void |
|
|
4182 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
4183 | { |
|
|
4184 | if (expect_false (ev_is_active (w))) |
|
|
4185 | return; |
|
|
4186 | |
|
|
4187 | EV_FREQUENT_CHECK; |
|
|
4188 | |
|
|
4189 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4190 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4191 | cleanups [cleanupcnt - 1] = w; |
|
|
4192 | |
|
|
4193 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4194 | ev_unref (EV_A); |
|
|
4195 | EV_FREQUENT_CHECK; |
|
|
4196 | } |
|
|
4197 | |
|
|
4198 | void |
|
|
4199 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
4200 | { |
|
|
4201 | clear_pending (EV_A_ (W)w); |
|
|
4202 | if (expect_false (!ev_is_active (w))) |
|
|
4203 | return; |
|
|
4204 | |
|
|
4205 | EV_FREQUENT_CHECK; |
|
|
4206 | ev_ref (EV_A); |
|
|
4207 | |
|
|
4208 | { |
|
|
4209 | int active = ev_active (w); |
|
|
4210 | |
|
|
4211 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4212 | ev_active (cleanups [active - 1]) = active; |
|
|
4213 | } |
|
|
4214 | |
|
|
4215 | ev_stop (EV_A_ (W)w); |
|
|
4216 | |
|
|
4217 | EV_FREQUENT_CHECK; |
|
|
4218 | } |
|
|
4219 | #endif |
|
|
4220 | |
3548 | #if EV_ASYNC_ENABLE |
4221 | #if EV_ASYNC_ENABLE |
3549 | void |
4222 | void |
3550 | ev_async_start (EV_P_ ev_async *w) |
4223 | ev_async_start (EV_P_ ev_async *w) |
3551 | { |
4224 | { |
3552 | if (expect_false (ev_is_active (w))) |
4225 | if (expect_false (ev_is_active (w))) |
3553 | return; |
4226 | return; |
|
|
4227 | |
|
|
4228 | w->sent = 0; |
3554 | |
4229 | |
3555 | evpipe_init (EV_A); |
4230 | evpipe_init (EV_A); |
3556 | |
4231 | |
3557 | EV_FREQUENT_CHECK; |
4232 | EV_FREQUENT_CHECK; |
3558 | |
4233 | |
… | |
… | |
3636 | { |
4311 | { |
3637 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
4312 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
3638 | |
4313 | |
3639 | if (expect_false (!once)) |
4314 | if (expect_false (!once)) |
3640 | { |
4315 | { |
3641 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4316 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
3642 | return; |
4317 | return; |
3643 | } |
4318 | } |
3644 | |
4319 | |
3645 | once->cb = cb; |
4320 | once->cb = cb; |
3646 | once->arg = arg; |
4321 | once->arg = arg; |
… | |
… | |
3661 | } |
4336 | } |
3662 | |
4337 | |
3663 | /*****************************************************************************/ |
4338 | /*****************************************************************************/ |
3664 | |
4339 | |
3665 | #if EV_WALK_ENABLE |
4340 | #if EV_WALK_ENABLE |
3666 | void |
4341 | void ecb_cold |
3667 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
4342 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3668 | { |
4343 | { |
3669 | int i, j; |
4344 | int i, j; |
3670 | ev_watcher_list *wl, *wn; |
4345 | ev_watcher_list *wl, *wn; |
3671 | |
4346 | |
… | |
… | |
3715 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4390 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3716 | #endif |
4391 | #endif |
3717 | |
4392 | |
3718 | #if EV_IDLE_ENABLE |
4393 | #if EV_IDLE_ENABLE |
3719 | if (types & EV_IDLE) |
4394 | if (types & EV_IDLE) |
3720 | for (j = NUMPRI; i--; ) |
4395 | for (j = NUMPRI; j--; ) |
3721 | for (i = idlecnt [j]; i--; ) |
4396 | for (i = idlecnt [j]; i--; ) |
3722 | cb (EV_A_ EV_IDLE, idles [j][i]); |
4397 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3723 | #endif |
4398 | #endif |
3724 | |
4399 | |
3725 | #if EV_FORK_ENABLE |
4400 | #if EV_FORK_ENABLE |
… | |
… | |
3778 | |
4453 | |
3779 | #if EV_MULTIPLICITY |
4454 | #if EV_MULTIPLICITY |
3780 | #include "ev_wrap.h" |
4455 | #include "ev_wrap.h" |
3781 | #endif |
4456 | #endif |
3782 | |
4457 | |
3783 | #ifdef __cplusplus |
|
|
3784 | } |
|
|
3785 | #endif |
|
|
3786 | |
|
|