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Comparing libev/ev.c (file contents):
Revision 1.336 by root, Wed Mar 10 08:19:38 2010 UTC vs.
Revision 1.400 by root, Sat Oct 15 09:05:03 2011 UTC

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
41extern "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
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
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 1 246# 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
227# endif 249# endif
228#endif 250#endif
229 251
230#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 255# else
234# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
235# endif 257# endif
236#endif 258#endif
237 259
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 262#endif
241 263
242#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 267# else
246# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
247# endif 269# endif
248#endif 270#endif
249 271
250#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 274#endif
253 275
254#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
255# ifdef _WIN32 277# ifdef _WIN32
256# define EV_USE_POLL 0 278# define EV_USE_POLL 0
257# else 279# else
258# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 281# endif
260#endif 282#endif
261 283
262#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 287# else
266# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
267# endif 289# endif
268#endif 290#endif
269 291
… …
275# define EV_USE_PORT 0 297# define EV_USE_PORT 0
276#endif 298#endif
277 299
278#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 303# else
282# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
283# endif 305# endif
284#endif 306#endif
285 307
286#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 309# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 310#endif
293 311
294#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 313# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 314#endif
301 315
302#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 319# else
306# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
307# endif 321# endif
308#endif 322#endif
309 323
310#ifndef EV_USE_SIGNALFD 324#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 326# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 327# else
314# define EV_USE_SIGNALFD 0 328# define EV_USE_SIGNALFD 0
315# endif 329# endif
316#endif 330#endif
317 331
… …
320# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
322#endif 336#endif
323 337
324#ifndef EV_VERIFY 338#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 340#endif
327 341
328#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 344#endif
331 345
332#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
334#endif 348#endif
335 349
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 351/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 352#if EV_USE_CLOCK_SYSCALL
… …
369# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
371#endif 385#endif
372 386
373#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
375# include <sys/select.h> 390# include <sys/select.h>
376# endif 391# endif
377#endif 392#endif
378 393
379#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 395# include <sys/statfs.h>
382# include <sys/inotify.h> 396# include <sys/inotify.h>
383/* 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 */
384# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
402# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
403# else 417# else
404# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
405# endif 419# endif
406# endif 420# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 422#endif
415 423
416#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
417/* 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 */
418# include <stdint.h> 426# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
425# else 433# else
426# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
427# endif 435# endif
428# endif 436# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 438
434struct signalfd_siginfo 439struct signalfd_siginfo
435{ 440{
436 uint32_t ssi_signo; 441 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
438}; 443};
439# ifdef __cplusplus
440}
441# endif 444#endif
442#endif
443
444 445
445/**/ 446/**/
446 447
447#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 450#else
450# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
451#endif 452#endif
452 453
453/* 454/*
454 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 457 */
461#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 */
462 460
463#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) */
464#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) */
465 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
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.
485 *
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,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 508 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
469#else 515#else
470# define expect(expr,value) (expr) 516 #include <inttypes.h>
471# define noinline
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
473# define inline
474# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
475#endif 531 #endif
532#endif
476 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
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 #endif
562 #endif
563#endif
564
565#ifndef ECB_MEMORY_FENCE
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
567 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32)
576 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
578 #endif
579#endif
580
581#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS
583 /*
584 * if you get undefined symbol references to pthread_mutex_lock,
585 * or failure to find pthread.h, then you should implement
586 * the ECB_MEMORY_FENCE operations for your cpu/compiler
587 * OR provide pthread.h and link against the posix thread library
588 * of your system.
589 */
590 #include <pthread.h>
591 #define ECB_NEEDS_PTHREADS 1
592 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
593
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif
597#endif
598
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif
602
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif
606
607/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610
611#if __cplusplus
612 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__
615#elif ECB_C99
616 #define ecb_inline static inline
617#else
618 #define ecb_inline static
619#endif
620
621#if ECB_GCC_VERSION(3,3)
622 #define ecb_restrict __restrict__
623#elif ECB_C99
624 #define ecb_restrict restrict
625#else
626 #define ecb_restrict
627#endif
628
629typedef int ecb_bool;
630
631#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
635
636#define ecb_function_ ecb_inline
637
638#if ECB_GCC_VERSION(3,1)
639 #define ecb_attribute(attrlist) __attribute__(attrlist)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality)
648#endif
649
650/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5)
652 #define ecb_decltype(x) __decltype(x)
653#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x)
655#endif
656
657#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__))
662
663#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__))
667#else
668 #define ecb_artificial
669 #define ecb_hot
670 #define ecb_cold
671#endif
672
673/* put around conditional expressions if you are very sure that the */
674/* expression is mostly true or mostly false. note that these return */
675/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 676#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 677#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
678/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr)
681
682/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4)
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */
691#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
693 ecb_function_ int
694 ecb_ctz32 (uint32_t x)
695 {
696 int r = 0;
697
698 x &= ~x + 1; /* this isolates the lowest bit */
699
700#if ECB_branchless_on_i386
701 r += !!(x & 0xaaaaaaaa) << 0;
702 r += !!(x & 0xcccccccc) << 1;
703 r += !!(x & 0xf0f0f0f0) << 2;
704 r += !!(x & 0xff00ff00) << 3;
705 r += !!(x & 0xffff0000) << 4;
706#else
707 if (x & 0xaaaaaaaa) r += 1;
708 if (x & 0xcccccccc) r += 2;
709 if (x & 0xf0f0f0f0) r += 4;
710 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16;
712#endif
713
714 return r;
715 }
716
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
718 ecb_function_ int
719 ecb_ctz64 (uint64_t x)
720 {
721 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift;
723 }
724
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_popcount32 (uint32_t x)
728 {
729 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101;
733
734 return x >> 24;
735 }
736
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
738 ecb_function_ int ecb_ld32 (uint32_t x)
739 {
740 int r = 0;
741
742 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; }
747
748 return r;
749 }
750
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
752 ecb_function_ int ecb_ld64 (uint64_t x)
753 {
754 int r = 0;
755
756 if (x >> 32) { x >>= 32; r += 32; }
757
758 return r + ecb_ld32 (x);
759 }
760#endif
761
762/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int
766ecb_popcount64 (uint64_t x)
767{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769}
770
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
779
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
795 ecb_function_ uint16_t
796 ecb_bswap16 (uint16_t x)
797 {
798 return ecb_rotl16 (x, 8);
799 }
800
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
802 ecb_function_ uint32_t
803 ecb_bswap32 (uint32_t x)
804 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 }
807
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
809 ecb_function_ uint64_t
810 ecb_bswap64 (uint64_t x)
811 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 }
814#endif
815
816#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable ()
818#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { }
822#endif
823
824/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
826
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char
829ecb_byteorder_helper (void)
830{
831 const uint32_t u = 0x11223344;
832 return *(unsigned char *)&u;
833}
834
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839
840#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif
845
846#if __cplusplus
847 template<typename T>
848 static inline T ecb_div_rd (T val, T div)
849 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 }
852 template<typename T>
853 static inline T ecb_div_ru (T val, T div)
854 {
855 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
856 }
857#else
858 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
859 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
860#endif
861
862#if ecb_cplusplus_does_not_suck
863 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
864 template<typename T, int N>
865 static inline int ecb_array_length (const T (&arr)[N])
866 {
867 return N;
868 }
869#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif
872
873#endif
874
875/* ECB.H END */
876
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences.
884 */
885# error "memory fences not defined for your architecture, please report"
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif
893
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
479#define inline_size static inline 898#define inline_size ecb_inline
480 899
481#if EV_MINIMAL 900#if EV_FEATURE_CODE
901# define inline_speed ecb_inline
902#else
482# define inline_speed static noinline 903# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 904#endif
486 905
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 907
489#if EV_MINPRI == EV_MAXPRI 908#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
504 923
505#if EV_USE_REALTIME 924#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 925/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 926/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 928#endif
510 929
511#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 945# include "ev_win32.c"
527#endif 946#endif
528 947
529/*****************************************************************************/ 948/*****************************************************************************/
530 949
950/* define a suitable floor function (only used by periodics atm) */
951
952#if EV_USE_FLOOR
953# include <math.h>
954# define ev_floor(v) floor (v)
955#else
956
957#include <float.h>
958
959/* a floor() replacement function, should be independent of ev_tstamp type */
960static ev_tstamp noinline
961ev_floor (ev_tstamp v)
962{
963 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif
969
970 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift))
972 {
973 ev_tstamp f;
974
975 if (v == v - 1.)
976 return v; /* very large number */
977
978 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f);
980 }
981
982 /* special treatment for negative args? */
983 if (expect_false (v < 0.))
984 {
985 ev_tstamp f = -ev_floor (-v);
986
987 return f - (f == v ? 0 : 1);
988 }
989
990 /* fits into an unsigned long */
991 return (unsigned long)v;
992}
993
994#endif
995
996/*****************************************************************************/
997
998#ifdef __linux
999# include <sys/utsname.h>
1000#endif
1001
1002static unsigned int noinline ecb_cold
1003ev_linux_version (void)
1004{
1005#ifdef __linux
1006 unsigned int v = 0;
1007 struct utsname buf;
1008 int i;
1009 char *p = buf.release;
1010
1011 if (uname (&buf))
1012 return 0;
1013
1014 for (i = 3+1; --i; )
1015 {
1016 unsigned int c = 0;
1017
1018 for (;;)
1019 {
1020 if (*p >= '0' && *p <= '9')
1021 c = c * 10 + *p++ - '0';
1022 else
1023 {
1024 p += *p == '.';
1025 break;
1026 }
1027 }
1028
1029 v = (v << 8) | c;
1030 }
1031
1032 return v;
1033#else
1034 return 0;
1035#endif
1036}
1037
1038/*****************************************************************************/
1039
531#if EV_AVOID_STDIO 1040#if EV_AVOID_STDIO
532static void noinline 1041static void noinline ecb_cold
533ev_printerr (const char *msg) 1042ev_printerr (const char *msg)
534{ 1043{
535 write (STDERR_FILENO, msg, strlen (msg)); 1044 write (STDERR_FILENO, msg, strlen (msg));
536} 1045}
537#endif 1046#endif
538 1047
539static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
540 1049
541void 1050void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
543{ 1052{
544 syserr_cb = cb; 1053 syserr_cb = cb;
545} 1054}
546 1055
547static void noinline 1056static void noinline ecb_cold
548ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
549{ 1058{
550 if (!msg) 1059 if (!msg)
551 msg = "(libev) system error"; 1060 msg = "(libev) system error";
552 1061
553 if (syserr_cb) 1062 if (syserr_cb)
554 syserr_cb (msg); 1063 syserr_cb (msg);
555 else 1064 else
556 { 1065 {
557#if EV_AVOID_STDIO 1066#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1067 ev_printerr (msg);
561 ev_printerr (": "); 1068 ev_printerr (": ");
562 ev_printerr (err); 1069 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1070 ev_printerr ("\n");
564#else 1071#else
565 perror (msg); 1072 perror (msg);
566#endif 1073#endif
567 abort (); 1074 abort ();
… …
587#endif 1094#endif
588} 1095}
589 1096
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
591 1098
592void 1099void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
594{ 1101{
595 alloc = cb; 1102 alloc = cb;
596} 1103}
597 1104
… …
601 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
602 1109
603 if (!ptr && size) 1110 if (!ptr && size)
604 { 1111 {
605#if EV_AVOID_STDIO 1112#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1114#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1116#endif
610 abort (); 1117 abort ();
611 } 1118 }
612 1119
613 return ptr; 1120 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1138 unsigned char unused;
632#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1141#endif
635#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
637#endif 1147#endif
638} ANFD; 1148} ANFD;
639 1149
640/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
641typedef struct 1151typedef struct
… …
696 1206
697 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
698 1208
699#endif 1209#endif
700 1210
701#if EV_MINIMAL < 2 1211#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1215#else
706# define EV_RELEASE_CB (void)0 1216# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1217# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1219#endif
710 1220
711#define EVUNLOOP_RECURSE 0x80 1221#define EVBREAK_RECURSE 0x80
712 1222
713/*****************************************************************************/ 1223/*****************************************************************************/
714 1224
715#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1226ev_tstamp
… …
760 if (delay > 0.) 1270 if (delay > 0.)
761 { 1271 {
762#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
763 struct timespec ts; 1273 struct timespec ts;
764 1274
765 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1277#elif defined(_WIN32)
770 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
771#else 1279#else
772 struct timeval tv; 1280 struct timeval tv;
773 1281
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
781#endif 1287#endif
782 } 1288 }
783} 1289}
784 1290
785/*****************************************************************************/ 1291/*****************************************************************************/
786 1292
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1294
789/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1297inline_size int
792array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
793{ 1299{
794 int ncur = cur + 1; 1300 int ncur = cur + 1;
795 1301
796 do 1302 do
797 ncur <<= 1; 1303 ncur <<= 1;
798 while (cnt > ncur); 1304 while (cnt > ncur);
799 1305
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1306 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1308 {
803 ncur *= elem; 1309 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1310 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1313 }
808 1314
809 return ncur; 1315 return ncur;
810} 1316}
811 1317
812static noinline void * 1318static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1320{
815 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
817} 1323}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1327
822#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
824 { \ 1330 { \
825 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1335 }
830 1336
… …
891} 1397}
892 1398
893/*****************************************************************************/ 1399/*****************************************************************************/
894 1400
895inline_speed void 1401inline_speed void
896fd_event_nc (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
897{ 1403{
898 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
899 ev_io *w; 1405 ev_io *w;
900 1406
901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1407 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
913fd_event (EV_P_ int fd, int revents) 1419fd_event (EV_P_ int fd, int revents)
914{ 1420{
915 ANFD *anfd = anfds + fd; 1421 ANFD *anfd = anfds + fd;
916 1422
917 if (expect_true (!anfd->reify)) 1423 if (expect_true (!anfd->reify))
918 fd_event_nc (EV_A_ fd, revents); 1424 fd_event_nocheck (EV_A_ fd, revents);
919} 1425}
920 1426
921void 1427void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
923{ 1429{
924 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
925 fd_event_nc (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
926} 1432}
927 1433
928/* make sure the external fd watch events are in-sync */ 1434/* make sure the external fd watch events are in-sync */
929/* with the kernel/libev internal state */ 1435/* with the kernel/libev internal state */
930inline_size void 1436inline_size void
931fd_reify (EV_P) 1437fd_reify (EV_P)
932{ 1438{
933 int i; 1439 int i;
934 1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
1465
935 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
936 { 1467 {
937 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
939 ev_io *w; 1470 ev_io *w;
940 1471
941 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
942 1474
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1476
946#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1478 {
949 unsigned long arg; 1479 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1480
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1482 anfd->events |= (unsigned char)w->events;
1483
1484 if (o_events != anfd->events)
1485 o_reify = EV__IOFDSET; /* actually |= */
952 } 1486 }
953#endif
954 1487
955 { 1488 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1490 }
966 1491
967 fdchangecnt = 0; 1492 fdchangecnt = 0;
968} 1493}
969 1494
… …
981 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
982 } 1507 }
983} 1508}
984 1509
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1511inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
988{ 1513{
989 ev_io *w; 1514 ev_io *w;
990 1515
991 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1520 }
996} 1521}
997 1522
998/* check whether the given fd is actually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1524inline_size int ecb_cold
1000fd_valid (int fd) 1525fd_valid (int fd)
1001{ 1526{
1002#ifdef _WIN32 1527#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1529#else
1005 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
1006#endif 1531#endif
1007} 1532}
1008 1533
1009/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
1010static void noinline 1535static void noinline ecb_cold
1011fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
1012{ 1537{
1013 int fd; 1538 int fd;
1014 1539
1015 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
1019} 1544}
1020 1545
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1547static void noinline ecb_cold
1023fd_enomem (EV_P) 1548fd_enomem (EV_P)
1024{ 1549{
1025 int fd; 1550 int fd;
1026 1551
1027 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
… …
1062} 1587}
1063 1588
1064/*****************************************************************************/ 1589/*****************************************************************************/
1065 1590
1066/* 1591/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
1070 */ 1595 */
1071 1596
1072/* 1597/*
… …
1222 1747
1223/*****************************************************************************/ 1748/*****************************************************************************/
1224 1749
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 1751
1227static void noinline 1752static void noinline ecb_cold
1228evpipe_init (EV_P) 1753evpipe_init (EV_P)
1229{ 1754{
1230 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1231 { 1756 {
1232# if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
… …
1254 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 } 1781 }
1257} 1782}
1258 1783
1259inline_size void 1784inline_speed void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{ 1786{
1262 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1263 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1264 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268 1805
1269#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1270 if (evfd >= 0) 1807 if (evfd >= 0)
1271 { 1808 {
1272 uint64_t counter = 1; 1809 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1274 } 1811 }
1275 else 1812 else
1276#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1277 write (evpipe [1], &dummy, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1278 1822
1279 errno = old_errno; 1823 errno = old_errno;
1280 } 1824 }
1281} 1825}
1282 1826
… …
1285static void 1829static void
1286pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1287{ 1831{
1288 int i; 1832 int i;
1289 1833
1834 if (revents & EV_READ)
1835 {
1290#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1291 if (evfd >= 0) 1837 if (evfd >= 0)
1292 { 1838 {
1293 uint64_t counter; 1839 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1295 } 1841 }
1296 else 1842 else
1297#endif 1843#endif
1298 { 1844 {
1299 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1300 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1301 } 1849 }
1302 1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 1854 if (sig_pending)
1304 { 1855 {
1305 sig_pending = 0; 1856 sig_pending = 0;
1306 1857
1307 for (i = EV_NSIG - 1; i--; ) 1858 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 1859 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1310 } 1861 }
1862#endif
1311 1863
1312#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1313 if (async_pending) 1865 if (async_pending)
1314 { 1866 {
1315 async_pending = 0; 1867 async_pending = 0;
… …
1324#endif 1876#endif
1325} 1877}
1326 1878
1327/*****************************************************************************/ 1879/*****************************************************************************/
1328 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1329static void 1898static void
1330ev_sighandler (int signum) 1899ev_sighandler (int signum)
1331{ 1900{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 1901#ifdef _WIN32
1337 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1338#endif 1903#endif
1339 1904
1340 signals [signum - 1].pending = 1; 1905 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 1906}
1343 1907
1344void noinline 1908void noinline
1345ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1346{ 1910{
… …
1403child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1404{ 1968{
1405 ev_child *w; 1969 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 1971
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1972 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 1973 {
1410 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1412 { 1976 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1977 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2002 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2003 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2005
1442 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2008 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2009}
1446 2010
1447#endif 2011#endif
1448 2012
1449/*****************************************************************************/ 2013/*****************************************************************************/
1450 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1451#if EV_USE_PORT 2018#if EV_USE_PORT
1452# include "ev_port.c" 2019# include "ev_port.c"
1453#endif 2020#endif
1454#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1462#endif 2029#endif
1463#if EV_USE_SELECT 2030#if EV_USE_SELECT
1464# include "ev_select.c" 2031# include "ev_select.c"
1465#endif 2032#endif
1466 2033
1467int 2034int ecb_cold
1468ev_version_major (void) 2035ev_version_major (void)
1469{ 2036{
1470 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1471} 2038}
1472 2039
1473int 2040int ecb_cold
1474ev_version_minor (void) 2041ev_version_minor (void)
1475{ 2042{
1476 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1477} 2044}
1478 2045
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2047int inline_size ecb_cold
1481enable_secure (void) 2048enable_secure (void)
1482{ 2049{
1483#ifdef _WIN32 2050#ifdef _WIN32
1484 return 0; 2051 return 0;
1485#else 2052#else
1486 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2054 || getgid () != getegid ();
1488#endif 2055#endif
1489} 2056}
1490 2057
1491unsigned int 2058unsigned int ecb_cold
1492ev_supported_backends (void) 2059ev_supported_backends (void)
1493{ 2060{
1494 unsigned int flags = 0; 2061 unsigned int flags = 0;
1495 2062
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2068
1502 return flags; 2069 return flags;
1503} 2070}
1504 2071
1505unsigned int 2072unsigned int ecb_cold
1506ev_recommended_backends (void) 2073ev_recommended_backends (void)
1507{ 2074{
1508 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1509 2076
1510#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1515#ifdef __APPLE__ 2082#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif
1520 2090
1521 return flags; 2091 return flags;
1522} 2092}
1523 2093
1524unsigned int 2094unsigned int ecb_cold
1525ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1526{ 2096{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1528 2098
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1531 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1532 2102
1533 return flags; 2103 return flags;
1534} 2104}
1535 2105
1536unsigned int 2106unsigned int
1537ev_backend (EV_P) 2107ev_backend (EV_P)
1538{ 2108{
1539 return backend; 2109 return backend;
1540} 2110}
1541 2111
1542#if EV_MINIMAL < 2 2112#if EV_FEATURE_API
1543unsigned int 2113unsigned int
1544ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1545{ 2115{
1546 return loop_count; 2116 return loop_count;
1547} 2117}
1548 2118
1549unsigned int 2119unsigned int
1550ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1551{ 2121{
1552 return loop_depth; 2122 return loop_depth;
1553} 2123}
1554 2124
1555void 2125void
… …
1574ev_userdata (EV_P) 2144ev_userdata (EV_P)
1575{ 2145{
1576 return userdata; 2146 return userdata;
1577} 2147}
1578 2148
2149void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1580{ 2151{
1581 invoke_cb = invoke_pending_cb; 2152 invoke_cb = invoke_pending_cb;
1582} 2153}
1583 2154
2155void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1585{ 2157{
1586 release_cb = release; 2158 release_cb = release;
1587 acquire_cb = acquire; 2159 acquire_cb = acquire;
1588} 2160}
1589#endif 2161#endif
1590 2162
1591/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2164static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1594{ 2166{
1595 if (!backend) 2167 if (!backend)
1596 { 2168 {
2169 origflags = flags;
2170
1597#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1598 if (!have_realtime) 2172 if (!have_realtime)
1599 { 2173 {
1600 struct timespec ts; 2174 struct timespec ts;
1601 2175
… …
1623 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2198 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2201
1628 ev_rt_now = ev_time (); 2202 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2203 mn_now = get_clock ();
1630 now_floor = mn_now; 2204 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2205 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2206#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2207 invoke_cb = ev_invoke_pending;
1634#endif 2208#endif
1635 2209
1636 io_blocktime = 0.; 2210 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2211 timeout_blocktime = 0.;
1638 backend = 0; 2212 backend = 0;
1639 backend_fd = -1; 2213 backend_fd = -1;
1640 sig_pending = 0; 2214 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2215#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2216 async_pending = 0;
1643#endif 2217#endif
2218 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0;
1644#if EV_USE_INOTIFY 2220#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2222#endif
1647#if EV_USE_SIGNALFD 2223#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2225#endif
1650 2226
1651 if (!(flags & 0x0000ffffU)) 2227 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1653 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1654#if EV_USE_PORT 2233#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2235#endif
1657#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2254#endif
1676 } 2255 }
1677} 2256}
1678 2257
1679/* free up a loop structure */ 2258/* free up a loop structure */
1680static void noinline 2259void ecb_cold
1681loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1682{ 2261{
1683 int i; 2262 int i;
2263
2264#if EV_MULTIPLICITY
2265 /* mimic free (0) */
2266 if (!EV_A)
2267 return;
2268#endif
2269
2270#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt))
2273 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING;
2276 }
2277#endif
2278
2279#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev))
2281 {
2282 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev);
2284 }
2285#endif
1684 2286
1685 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1686 { 2288 {
1687 /*ev_ref (EV_A);*/ 2289 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1710#endif 2312#endif
1711 2313
1712 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1713 close (backend_fd); 2315 close (backend_fd);
1714 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1715#if EV_USE_PORT 2320#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2322#endif
1718#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1747#endif 2352#endif
1748#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1750#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1751 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1755#endif 2363#endif
1756 2364
1757 backend = 0; 2365 backend = 0;
2366
2367#if EV_MULTIPLICITY
2368 if (ev_is_default_loop (EV_A))
2369#endif
2370 ev_default_loop_ptr = 0;
2371#if EV_MULTIPLICITY
2372 else
2373 ev_free (EV_A);
2374#endif
1758} 2375}
1759 2376
1760#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1762#endif 2379#endif
… …
1777 infy_fork (EV_A); 2394 infy_fork (EV_A);
1778#endif 2395#endif
1779 2396
1780 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1781 { 2398 {
1782 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 2400
1789 ev_ref (EV_A); 2401 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1791 2403
1792#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1798 { 2410 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 } 2413 }
1802 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1803 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1804 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1805 pipecb (EV_A_ &pipe_w, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1806 } 2420 }
1807 2421
1808 postfork = 0; 2422 postfork = 0;
1809} 2423}
1810 2424
1811#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1812 2426
1813struct ev_loop * 2427struct ev_loop * ecb_cold
1814ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1815{ 2429{
1816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1817 2431
1818 memset (EV_A, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1819 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1820 2434
1821 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1822 return EV_A; 2436 return EV_A;
1823 2437
2438 ev_free (EV_A);
1824 return 0; 2439 return 0;
1825} 2440}
1826 2441
1827void
1828ev_loop_destroy (EV_P)
1829{
1830 loop_destroy (EV_A);
1831 ev_free (loop);
1832}
1833
1834void
1835ev_loop_fork (EV_P)
1836{
1837 postfork = 1; /* must be in line with ev_default_fork */
1838}
1839#endif /* multiplicity */ 2442#endif /* multiplicity */
1840 2443
1841#if EV_VERIFY 2444#if EV_VERIFY
1842static void noinline 2445static void noinline ecb_cold
1843verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1844{ 2447{
1845 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1846 2449
1847 if (w->pending) 2450 if (w->pending)
1848 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1849} 2452}
1850 2453
1851static void noinline 2454static void noinline ecb_cold
1852verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1853{ 2456{
1854 int i; 2457 int i;
1855 2458
1856 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1861 2464
1862 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1863 } 2466 }
1864} 2467}
1865 2468
1866static void noinline 2469static void noinline ecb_cold
1867array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1868{ 2471{
1869 while (cnt--) 2472 while (cnt--)
1870 { 2473 {
1871 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1872 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1873 } 2476 }
1874} 2477}
1875#endif 2478#endif
1876 2479
1877#if EV_MINIMAL < 2 2480#if EV_FEATURE_API
1878void 2481void ecb_cold
1879ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1880{ 2483{
1881#if EV_VERIFY 2484#if EV_VERIFY
1882 int i; 2485 int i;
1883 WL w; 2486 WL w;
1884 2487
… …
1918#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1919 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1920 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1921#endif 2524#endif
1922 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1923#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1924 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1925 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1926#endif 2534#endif
1927 2535
2536#if EV_PREPARE_ENABLE
1928 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1929 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1930 2540
2541#if EV_CHECK_ENABLE
1931 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1932 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1933 2545
1934# if 0 2546# if 0
1935#if EV_CHILD_ENABLE 2547#if EV_CHILD_ENABLE
1936 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2548 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1937 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1938#endif 2550#endif
1939# endif 2551# endif
1940#endif 2552#endif
1941} 2553}
1942#endif 2554#endif
1943 2555
1944#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1945struct ev_loop * 2557struct ev_loop * ecb_cold
1946ev_default_loop_init (unsigned int flags)
1947#else 2558#else
1948int 2559int
2560#endif
1949ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1950#endif
1951{ 2562{
1952 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1953 { 2564 {
1954#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1955 EV_P = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1974 2585
1975 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1976} 2587}
1977 2588
1978void 2589void
1979ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1980{ 2591{
1981#if EV_MULTIPLICITY
1982 EV_P = ev_default_loop_ptr;
1983#endif
1984
1985 ev_default_loop_ptr = 0;
1986
1987#if EV_CHILD_ENABLE
1988 ev_ref (EV_A); /* child watcher */
1989 ev_signal_stop (EV_A_ &childev);
1990#endif
1991
1992 loop_destroy (EV_A);
1993}
1994
1995void
1996ev_default_fork (void)
1997{
1998#if EV_MULTIPLICITY
1999 EV_P = ev_default_loop_ptr;
2000#endif
2001
2002 postfork = 1; /* must be in line with ev_loop_fork */ 2592 postfork = 1; /* must be in line with ev_default_fork */
2003} 2593}
2004 2594
2005/*****************************************************************************/ 2595/*****************************************************************************/
2006 2596
2007void 2597void
… …
2029 2619
2030 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
2031 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
2032 { 2622 {
2033 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2034
2035 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2036 /* ^ this is no longer true, as pending_w could be here */
2037 2624
2038 p->w->pending = 0; 2625 p->w->pending = 0;
2039 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
2040 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2041 } 2628 }
… …
2098 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
2099 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
2100 } 2687 }
2101 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2102 2689
2103 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
2104 } 2691 }
2105} 2692}
2106 2693
2107#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
2695
2696static void noinline
2697periodic_recalc (EV_P_ ev_periodic *w)
2698{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701
2702 /* the above almost always errs on the low side */
2703 while (at <= ev_rt_now)
2704 {
2705 ev_tstamp nat = at + w->interval;
2706
2707 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at))
2709 {
2710 at = ev_rt_now;
2711 break;
2712 }
2713
2714 at = nat;
2715 }
2716
2717 ev_at (w) = at;
2718}
2719
2108/* make periodics pending */ 2720/* make periodics pending */
2109inline_size void 2721inline_size void
2110periodics_reify (EV_P) 2722periodics_reify (EV_P)
2111{ 2723{
2112 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
2131 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
2132 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
2133 } 2745 }
2134 else if (w->interval) 2746 else if (w->interval)
2135 { 2747 {
2136 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 periodic_recalc (EV_A_ w);
2137 /* if next trigger time is not sufficiently in the future, put it there */
2138 /* this might happen because of floating point inexactness */
2139 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2140 {
2141 ev_at (w) += w->interval;
2142
2143 /* if interval is unreasonably low we might still have a time in the past */
2144 /* so correct this. this will make the periodic very inexact, but the user */
2145 /* has effectively asked to get triggered more often than possible */
2146 if (ev_at (w) < ev_rt_now)
2147 ev_at (w) = ev_rt_now;
2148 }
2149
2150 ANHE_at_cache (periodics [HEAP0]); 2749 ANHE_at_cache (periodics [HEAP0]);
2151 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
2152 } 2751 }
2153 else 2752 else
2154 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2161 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
2162 } 2761 }
2163} 2762}
2164 2763
2165/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
2166/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2765/* TODO: maybe ensure that at least one event happens when jumping forward? */
2167static void noinline 2766static void noinline ecb_cold
2168periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
2169{ 2768{
2170 int i; 2769 int i;
2171 2770
2172 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
2175 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2176 2775
2177 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
2178 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2179 else if (w->interval) 2778 else if (w->interval)
2180 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
2181 2780
2182 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
2183 } 2782 }
2184 2783
2185 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
2186} 2785}
2187#endif 2786#endif
2188 2787
2189/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
2190static void noinline 2789static void noinline ecb_cold
2191timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
2192{ 2791{
2193 int i; 2792 int i;
2194 2793
2195 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
2232 * doesn't hurt either as we only do this on time-jumps or 2831 * doesn't hurt either as we only do this on time-jumps or
2233 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
2234 */ 2833 */
2235 for (i = 4; --i; ) 2834 for (i = 4; --i; )
2236 { 2835 {
2836 ev_tstamp diff;
2237 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
2238 2838
2839 diff = odiff - rtmn_diff;
2840
2239 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2240 return; /* all is well */ 2842 return; /* all is well */
2241 2843
2242 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2243 mn_now = get_clock (); 2845 mn_now = get_clock ();
2244 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2267 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2268 } 2870 }
2269} 2871}
2270 2872
2271void 2873void
2272ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2273{ 2875{
2274#if EV_MINIMAL < 2 2876#if EV_FEATURE_API
2275 ++loop_depth; 2877 ++loop_depth;
2276#endif 2878#endif
2277 2879
2278 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2279 2881
2280 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2281 2883
2282 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2283 2885
2284 do 2886 do
2285 { 2887 {
2286#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2287 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2288#endif 2890#endif
2289 2891
2290#ifndef _WIN32 2892#ifndef _WIN32
2291 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2292 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2304 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2305 EV_INVOKE_PENDING; 2907 EV_INVOKE_PENDING;
2306 } 2908 }
2307#endif 2909#endif
2308 2910
2911#if EV_PREPARE_ENABLE
2309 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2310 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2311 { 2914 {
2312 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2313 EV_INVOKE_PENDING; 2916 EV_INVOKE_PENDING;
2314 } 2917 }
2918#endif
2315 2919
2316 if (expect_false (loop_done)) 2920 if (expect_false (loop_done))
2317 break; 2921 break;
2318 2922
2319 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
… …
2326 /* calculate blocking time */ 2930 /* calculate blocking time */
2327 { 2931 {
2328 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2330 2934
2935 /* remember old timestamp for io_blocktime calculation */
2936 ev_tstamp prev_mn_now = mn_now;
2937
2938 /* update time to cancel out callback processing overhead */
2939 time_update (EV_A_ 1e100);
2940
2941 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1;
2943
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 2947 {
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; 2948 waittime = MAX_BLOCKTIME;
2340 2949
2341 if (timercnt) 2950 if (timercnt)
2342 { 2951 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2345 } 2954 }
2346 2955
2347#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 2957 if (periodiccnt)
2349 { 2958 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2352 } 2961 }
2353#endif 2962#endif
2354 2963
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 2966 waittime = timeout_blocktime;
2967
2968 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime;
2358 2972
2359 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2361 { 2975 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 2977
2364 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2366 2980
2367 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2368 { 2982 {
2369 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 2984 waittime -= sleeptime;
2371 } 2985 }
2372 } 2986 }
2373 } 2987 }
2374 2988
2375#if EV_MINIMAL < 2 2989#if EV_FEATURE_API
2376 ++loop_count; 2990 ++loop_count;
2377#endif 2991#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2381 3004
2382 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2384 } 3007 }
2385 3008
… …
2392#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2393 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2394 idle_reify (EV_A); 3017 idle_reify (EV_A);
2395#endif 3018#endif
2396 3019
3020#if EV_CHECK_ENABLE
2397 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2398 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2399 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2400 3025
2401 EV_INVOKE_PENDING; 3026 EV_INVOKE_PENDING;
2402 } 3027 }
2403 while (expect_true ( 3028 while (expect_true (
2404 activecnt 3029 activecnt
2405 && !loop_done 3030 && !loop_done
2406 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2407 )); 3032 ));
2408 3033
2409 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2410 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2411 3036
2412#if EV_MINIMAL < 2 3037#if EV_FEATURE_API
2413 --loop_depth; 3038 --loop_depth;
2414#endif 3039#endif
2415} 3040}
2416 3041
2417void 3042void
2418ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2419{ 3044{
2420 loop_done = how; 3045 loop_done = how;
2421} 3046}
2422 3047
2423void 3048void
… …
2571 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2572 3197
2573 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2574 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2575 3200
2576 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2577 3202
2578 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2579} 3204}
2580 3205
2581void noinline 3206void noinline
… …
2673 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2674 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2675 else if (w->interval) 3300 else if (w->interval)
2676 { 3301 {
2677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2678 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2679 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2680 } 3304 }
2681 else 3305 else
2682 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2683 3307
2684 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2805 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2806 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3431 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2808 sigaction (w->signum, &sa, 0); 3432 sigaction (w->signum, &sa, 0);
2809 3433
3434 if (origflags & EVFLAG_NOSIGMASK)
3435 {
2810 sigemptyset (&sa.sa_mask); 3436 sigemptyset (&sa.sa_mask);
2811 sigaddset (&sa.sa_mask, w->signum); 3437 sigaddset (&sa.sa_mask, w->signum);
2812 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3438 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3439 }
2813#endif 3440#endif
2814 } 3441 }
2815 3442
2816 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2817} 3444}
… …
2867 return; 3494 return;
2868 3495
2869 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2870 3497
2871 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2872 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2873 3500
2874 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2875} 3502}
2876 3503
2877void 3504void
… …
2881 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2882 return; 3509 return;
2883 3510
2884 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2885 3512
2886 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2887 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2888 3515
2889 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2890} 3517}
2891 3518
… …
2958 if (!pend || pend == path) 3585 if (!pend || pend == path)
2959 break; 3586 break;
2960 3587
2961 *pend = 0; 3588 *pend = 0;
2962 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2963 } 3590 }
2964 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2965 } 3592 }
2966 } 3593 }
2967 3594
2968 if (w->wd >= 0) 3595 if (w->wd >= 0)
2969 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3596 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2970 3597
2971 /* now re-arm timer, if required */ 3598 /* now re-arm timer, if required */
2972 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2973 ev_timer_again (EV_A_ &w->timer); 3600 ev_timer_again (EV_A_ &w->timer);
2974 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2982 3609
2983 if (wd < 0) 3610 if (wd < 0)
2984 return; 3611 return;
2985 3612
2986 w->wd = -2; 3613 w->wd = -2;
2987 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2988 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2989 3616
2990 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2991 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2992} 3619}
… …
2994static void noinline 3621static void noinline
2995infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2996{ 3623{
2997 if (slot < 0) 3624 if (slot < 0)
2998 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2999 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3000 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
3001 else 3628 else
3002 { 3629 {
3003 WL w_; 3630 WL w_;
3004 3631
3005 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3006 { 3633 {
3007 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
3008 w_ = w_->next; /* lets us remove this watcher and all before it */ 3635 w_ = w_->next; /* lets us remove this watcher and all before it */
3009 3636
3010 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
3011 { 3638 {
3012 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3013 { 3640 {
3014 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3641 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3015 w->wd = -1; 3642 w->wd = -1;
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
3017 } 3644 }
3018 3645
3019 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3035 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3662 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3036 ofs += sizeof (struct inotify_event) + ev->len; 3663 ofs += sizeof (struct inotify_event) + ev->len;
3037 } 3664 }
3038} 3665}
3039 3666
3040inline_size unsigned int
3041ev_linux_version (void)
3042{
3043 struct utsname buf;
3044 unsigned int v;
3045 int i;
3046 char *p = buf.release;
3047
3048 if (uname (&buf))
3049 return 0;
3050
3051 for (i = 3+1; --i; )
3052 {
3053 unsigned int c = 0;
3054
3055 for (;;)
3056 {
3057 if (*p >= '0' && *p <= '9')
3058 c = c * 10 + *p++ - '0';
3059 else
3060 {
3061 p += *p == '.';
3062 break;
3063 }
3064 }
3065
3066 v = (v << 8) | c;
3067 }
3068
3069 return v;
3070}
3071
3072inline_size void 3667inline_size void ecb_cold
3073ev_check_2625 (EV_P) 3668ev_check_2625 (EV_P)
3074{ 3669{
3075 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
3076 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3077 */ 3672 */
… …
3133 ev_io_set (&fs_w, fs_fd, EV_READ); 3728 ev_io_set (&fs_w, fs_fd, EV_READ);
3134 ev_io_start (EV_A_ &fs_w); 3729 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A); 3730 ev_unref (EV_A);
3136 } 3731 }
3137 3732
3138 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3139 { 3734 {
3140 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
3141 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
3142 3737
3143 while (w_) 3738 while (w_)
… …
3318 3913
3319 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
3320} 3915}
3321#endif 3916#endif
3322 3917
3918#if EV_PREPARE_ENABLE
3323void 3919void
3324ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
3325{ 3921{
3326 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3327 return; 3923 return;
… …
3353 3949
3354 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
3355 3951
3356 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3357} 3953}
3954#endif
3358 3955
3956#if EV_CHECK_ENABLE
3359void 3957void
3360ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
3361{ 3959{
3362 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
3363 return; 3961 return;
… …
3389 3987
3390 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
3391 3989
3392 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
3393} 3991}
3992#endif
3394 3993
3395#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3396void noinline 3995void noinline
3397ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3398{ 3997{
3399 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3400} 3999}
3401 4000
3402static void 4001static void
3403embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3404{ 4003{
3405 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3406 4005
3407 if (ev_cb (w)) 4006 if (ev_cb (w))
3408 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3409 else 4008 else
3410 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3411} 4010}
3412 4011
3413static void 4012static void
3414embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3415{ 4014{
… …
3419 EV_P = w->other; 4018 EV_P = w->other;
3420 4019
3421 while (fdchangecnt) 4020 while (fdchangecnt)
3422 { 4021 {
3423 fd_reify (EV_A); 4022 fd_reify (EV_A);
3424 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3425 } 4024 }
3426 } 4025 }
3427} 4026}
3428 4027
3429static void 4028static void
… …
3435 4034
3436 { 4035 {
3437 EV_P = w->other; 4036 EV_P = w->other;
3438 4037
3439 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3441 } 4040 }
3442 4041
3443 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3444} 4043}
3445 4044
… …
3537 4136
3538 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3539} 4138}
3540#endif 4139#endif
3541 4140
4141#if EV_CLEANUP_ENABLE
4142void
4143ev_cleanup_start (EV_P_ ev_cleanup *w)
4144{
4145 if (expect_false (ev_is_active (w)))
4146 return;
4147
4148 EV_FREQUENT_CHECK;
4149
4150 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4152 cleanups [cleanupcnt - 1] = w;
4153
4154 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK;
4157}
4158
4159void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w)
4161{
4162 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w)))
4164 return;
4165
4166 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A);
4168
4169 {
4170 int active = ev_active (w);
4171
4172 cleanups [active - 1] = cleanups [--cleanupcnt];
4173 ev_active (cleanups [active - 1]) = active;
4174 }
4175
4176 ev_stop (EV_A_ (W)w);
4177
4178 EV_FREQUENT_CHECK;
4179}
4180#endif
4181
3542#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3543void 4183void
3544ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3545{ 4185{
3546 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3547 return; 4187 return;
4188
4189 w->sent = 0;
3548 4190
3549 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3550 4192
3551 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3552 4194
… …
3630{ 4272{
3631 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3632 4274
3633 if (expect_false (!once)) 4275 if (expect_false (!once))
3634 { 4276 {
3635 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3636 return; 4278 return;
3637 } 4279 }
3638 4280
3639 once->cb = cb; 4281 once->cb = cb;
3640 once->arg = arg; 4282 once->arg = arg;
… …
3655} 4297}
3656 4298
3657/*****************************************************************************/ 4299/*****************************************************************************/
3658 4300
3659#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3660void 4302void ecb_cold
3661ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3662{ 4304{
3663 int i, j; 4305 int i, j;
3664 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3665 4307
… …
3709 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3710#endif 4352#endif
3711 4353
3712#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3713 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3714 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3715 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3716 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3717#endif 4359#endif
3718 4360
3719#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3727 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3728 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3729 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3730#endif 4372#endif
3731 4373
4374#if EV_PREPARE_ENABLE
3732 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3733 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3734#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3735 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3736#endif 4379# endif
3737 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3738 4382
4383#if EV_CHECK_ENABLE
3739 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3740 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3741 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3742 4388
4389#if EV_SIGNAL_ENABLE
3743 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3744 for (i = 0; i < EV_NSIG - 1; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3745 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3746 { 4393 {
3747 wn = wl->next; 4394 wn = wl->next;
3748 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3749 wl = wn; 4396 wl = wn;
3750 } 4397 }
4398#endif
3751 4399
4400#if EV_CHILD_ENABLE
3752 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3753 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3754 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3755 { 4404 {
3756 wn = wl->next; 4405 wn = wl->next;
3757 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3758 wl = wn; 4407 wl = wn;
3759 } 4408 }
4409#endif
3760/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3761/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3762} 4412}
3763#endif 4413#endif
3764 4414
3765#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3766 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3767#endif 4417#endif
3768 4418
3769#ifdef __cplusplus
3770}
3771#endif
3772

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