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Comparing libev/ev.c (file contents):
Revision 1.352 by root, Thu Oct 21 02:33:08 2010 UTC vs.
Revision 1.490 by root, Thu Jun 20 22:44:59 2019 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) 2007-2019 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
166#include <stdlib.h> 177#include <stdlib.h>
167#include <string.h> 178#include <string.h>
168#include <fcntl.h> 179#include <fcntl.h>
169#include <stddef.h> 180#include <stddef.h>
170 181
… …
182# include EV_H 193# include EV_H
183#else 194#else
184# include "ev.h" 195# include "ev.h"
185#endif 196#endif
186 197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
208
187#ifndef _WIN32 209#ifndef _WIN32
188# include <sys/time.h> 210# include <sys/time.h>
189# include <sys/wait.h> 211# include <sys/wait.h>
190# include <unistd.h> 212# include <unistd.h>
191#else 213#else
192# include <io.h> 214# include <io.h>
193# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
194# include <windows.h> 217# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
197# endif 220# endif
198# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
199#endif 222#endif
200 223
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
208
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
210 225
211/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 227#if defined EV_NSIG
213/* use what's provided */ 228/* use what's provided */
214#elif defined (NSIG) 229#elif defined NSIG
215# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 231#elif defined _NSIG
217# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 233#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 235#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 239#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 241#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 245#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 247#else
233# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 249#endif
235/* but consider reporting it, too! :) */ 250
236# define EV_NSIG 65 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
237#endif 253#endif
238 254
239#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 258# else
243# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
244# endif 260# endif
245#endif 261#endif
246 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
247#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 275# else
251# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
252# endif 277# endif
253#endif 278#endif
… …
290 315
291#ifndef EV_USE_PORT 316#ifndef EV_USE_PORT
292# define EV_USE_PORT 0 317# define EV_USE_PORT 0
293#endif 318#endif
294 319
320#ifndef EV_USE_LINUXAIO
321# define EV_USE_LINUXAIO 0
322#endif
323
295#ifndef EV_USE_INOTIFY 324#ifndef EV_USE_INOTIFY
296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
297# define EV_USE_INOTIFY EV_FEATURE_OS 326# define EV_USE_INOTIFY EV_FEATURE_OS
298# else 327# else
299# define EV_USE_INOTIFY 0 328# define EV_USE_INOTIFY 0
… …
340 369
341#ifndef EV_HEAP_CACHE_AT 370#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 371# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 372#endif
344 373
374#ifdef __ANDROID__
375/* supposedly, android doesn't typedef fd_mask */
376# undef EV_USE_SELECT
377# define EV_USE_SELECT 0
378/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
379# undef EV_USE_CLOCK_SYSCALL
380# define EV_USE_CLOCK_SYSCALL 0
381#endif
382
383/* aix's poll.h seems to cause lots of trouble */
384#ifdef _AIX
385/* AIX has a completely broken poll.h header */
386# undef EV_USE_POLL
387# define EV_USE_POLL 0
388#endif
389
390#if EV_USE_LINUXAIO
391# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
392#endif
393
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 394/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 395/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 396#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 397# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 398# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 399# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 400# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 401# define EV_USE_MONOTONIC 1
353# else 402# else
… …
356# endif 405# endif
357#endif 406#endif
358 407
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 408/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 409
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 410#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 411# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 412# define EV_USE_MONOTONIC 0
370#endif 413#endif
371 414
… …
378# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
380#endif 423#endif
381 424
382#if !EV_USE_NANOSLEEP 425#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 426/* hp-ux has it in sys/time.h, which we unconditionally include above */
427# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 428# include <sys/select.h>
385# endif 429# endif
386#endif 430#endif
387 431
388#if EV_USE_INOTIFY 432#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 433# include <sys/statfs.h>
391# include <sys/inotify.h> 434# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 435/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 436# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 437# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 438# define EV_USE_INOTIFY 0
396# endif 439# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 440#endif
402 441
403#if EV_USE_EVENTFD 442#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 444# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 450# define EFD_CLOEXEC O_CLOEXEC
412# else 451# else
413# define EFD_CLOEXEC 02000000 452# define EFD_CLOEXEC 02000000
414# endif 453# endif
415# endif 454# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 455EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 456#endif
424 457
425#if EV_USE_SIGNALFD 458#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 459/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 460# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 466# define SFD_CLOEXEC O_CLOEXEC
434# else 467# else
435# define SFD_CLOEXEC 02000000 468# define SFD_CLOEXEC 02000000
436# endif 469# endif
437# endif 470# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 471EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 472
443struct signalfd_siginfo 473struct signalfd_siginfo
444{ 474{
445 uint32_t ssi_signo; 475 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 476 char pad[128 - sizeof (uint32_t)];
447}; 477};
448# ifdef __cplusplus
449}
450# endif
451#endif 478#endif
452 479
453/**/ 480/**/
454 481
455#if EV_VERIFY >= 3 482#if EV_VERIFY >= 3
… …
457#else 484#else
458# define EV_FREQUENT_CHECK do { } while (0) 485# define EV_FREQUENT_CHECK do { } while (0)
459#endif 486#endif
460 487
461/* 488/*
462 * This is used to avoid floating point rounding problems. 489 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 490 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 491 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 492#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
493/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 494
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 495#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
472#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 496#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 497
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 498#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 499#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 500
501/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
502/* ECB.H BEGIN */
503/*
504 * libecb - http://software.schmorp.de/pkg/libecb
505 *
506 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
507 * Copyright (©) 2011 Emanuele Giaquinta
508 * All rights reserved.
509 *
510 * Redistribution and use in source and binary forms, with or without modifica-
511 * tion, are permitted provided that the following conditions are met:
512 *
513 * 1. Redistributions of source code must retain the above copyright notice,
514 * this list of conditions and the following disclaimer.
515 *
516 * 2. Redistributions in binary form must reproduce the above copyright
517 * notice, this list of conditions and the following disclaimer in the
518 * documentation and/or other materials provided with the distribution.
519 *
520 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
521 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
522 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
523 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
524 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
525 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
526 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
527 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
528 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
529 * OF THE POSSIBILITY OF SUCH DAMAGE.
530 *
531 * Alternatively, the contents of this file may be used under the terms of
532 * the GNU General Public License ("GPL") version 2 or any later version,
533 * in which case the provisions of the GPL are applicable instead of
534 * the above. If you wish to allow the use of your version of this file
535 * only under the terms of the GPL and not to allow others to use your
536 * version of this file under the BSD license, indicate your decision
537 * by deleting the provisions above and replace them with the notice
538 * and other provisions required by the GPL. If you do not delete the
539 * provisions above, a recipient may use your version of this file under
540 * either the BSD or the GPL.
541 */
542
543#ifndef ECB_H
544#define ECB_H
545
546/* 16 bits major, 16 bits minor */
547#define ECB_VERSION 0x00010005
548
549#ifdef _WIN32
550 typedef signed char int8_t;
551 typedef unsigned char uint8_t;
552 typedef signed short int16_t;
553 typedef unsigned short uint16_t;
554 typedef signed int int32_t;
555 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 556 #if __GNUC__
557 typedef signed long long int64_t;
558 typedef unsigned long long uint64_t;
559 #else /* _MSC_VER || __BORLANDC__ */
560 typedef signed __int64 int64_t;
561 typedef unsigned __int64 uint64_t;
562 #endif
563 #ifdef _WIN64
564 #define ECB_PTRSIZE 8
565 typedef uint64_t uintptr_t;
566 typedef int64_t intptr_t;
567 #else
568 #define ECB_PTRSIZE 4
569 typedef uint32_t uintptr_t;
570 typedef int32_t intptr_t;
571 #endif
572#else
573 #include <inttypes.h>
574 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
575 #define ECB_PTRSIZE 8
576 #else
577 #define ECB_PTRSIZE 4
578 #endif
579#endif
580
581#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
582#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
583
584/* work around x32 idiocy by defining proper macros */
585#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
586 #if _ILP32
587 #define ECB_AMD64_X32 1
588 #else
589 #define ECB_AMD64 1
590 #endif
591#endif
592
593/* many compilers define _GNUC_ to some versions but then only implement
594 * what their idiot authors think are the "more important" extensions,
595 * causing enormous grief in return for some better fake benchmark numbers.
596 * or so.
597 * we try to detect these and simply assume they are not gcc - if they have
598 * an issue with that they should have done it right in the first place.
599 */
600#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
601 #define ECB_GCC_VERSION(major,minor) 0
602#else
603 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
604#endif
605
606#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
607
608#if __clang__ && defined __has_builtin
609 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
610#else
611 #define ECB_CLANG_BUILTIN(x) 0
612#endif
613
614#if __clang__ && defined __has_extension
615 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
616#else
617 #define ECB_CLANG_EXTENSION(x) 0
618#endif
619
620#define ECB_CPP (__cplusplus+0)
621#define ECB_CPP11 (__cplusplus >= 201103L)
622#define ECB_CPP14 (__cplusplus >= 201402L)
623#define ECB_CPP17 (__cplusplus >= 201703L)
624
625#if ECB_CPP
626 #define ECB_C 0
627 #define ECB_STDC_VERSION 0
628#else
629 #define ECB_C 1
630 #define ECB_STDC_VERSION __STDC_VERSION__
631#endif
632
633#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
634#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
635#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
636
637#if ECB_CPP
638 #define ECB_EXTERN_C extern "C"
639 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
640 #define ECB_EXTERN_C_END }
641#else
642 #define ECB_EXTERN_C extern
643 #define ECB_EXTERN_C_BEG
644 #define ECB_EXTERN_C_END
645#endif
646
647/*****************************************************************************/
648
649/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
650/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
651
652#if ECB_NO_THREADS
653 #define ECB_NO_SMP 1
654#endif
655
656#if ECB_NO_SMP
657 #define ECB_MEMORY_FENCE do { } while (0)
658#endif
659
660/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
661#if __xlC__ && ECB_CPP
662 #include <builtins.h>
663#endif
664
665#if 1400 <= _MSC_VER
666 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #if __i386 || __i386__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
673 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
674 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
675 #elif ECB_GCC_AMD64
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
677 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
679 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
681 #elif defined __ARM_ARCH_2__ \
682 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
683 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
684 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
685 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
686 || defined __ARM_ARCH_5TEJ__
687 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
688 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
689 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
690 || defined __ARM_ARCH_6T2__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
692 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
693 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
695 #elif __aarch64__
696 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
697 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
701 #elif defined __s390__ || defined __s390x__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
703 #elif defined __mips__
704 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
705 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
707 #elif defined __alpha__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
709 #elif defined __hppa__
710 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
711 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
712 #elif defined __ia64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
714 #elif defined __m68k__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
716 #elif defined __m88k__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
718 #elif defined __sh__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
720 #endif
721 #endif
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(4,7)
726 /* see comment below (stdatomic.h) about the C11 memory model. */
727 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
728 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
729 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
730
731 #elif ECB_CLANG_EXTENSION(c_atomic)
732 /* see comment below (stdatomic.h) about the C11 memory model. */
733 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
734 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
735 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
736
737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
738 #define ECB_MEMORY_FENCE __sync_synchronize ()
739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
740 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
741 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
742 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
743 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
744 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
750 #elif defined _WIN32
751 #include <WinNT.h>
752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
754 #include <mbarrier.h>
755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
757 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
758 #elif __xlC__
759 #define ECB_MEMORY_FENCE __sync ()
760 #endif
761#endif
762
763#ifndef ECB_MEMORY_FENCE
764 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
765 /* we assume that these memory fences work on all variables/all memory accesses, */
766 /* not just C11 atomics and atomic accesses */
767 #include <stdatomic.h>
768 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
769 /* any fence other than seq_cst, which isn't very efficient for us. */
770 /* Why that is, we don't know - either the C11 memory model is quite useless */
771 /* for most usages, or gcc and clang have a bug */
772 /* I *currently* lean towards the latter, and inefficiently implement */
773 /* all three of ecb's fences as a seq_cst fence */
774 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
775 /* for all __atomic_thread_fence's except seq_cst */
776 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if !ECB_AVOID_PTHREADS
782 /*
783 * if you get undefined symbol references to pthread_mutex_lock,
784 * or failure to find pthread.h, then you should implement
785 * the ECB_MEMORY_FENCE operations for your cpu/compiler
786 * OR provide pthread.h and link against the posix thread library
787 * of your system.
788 */
789 #include <pthread.h>
790 #define ECB_NEEDS_PTHREADS 1
791 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
792
793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
794 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
795 #endif
796#endif
797
798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
800#endif
801
802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
804#endif
805
806/*****************************************************************************/
807
808#if ECB_CPP
809 #define ecb_inline static inline
810#elif ECB_GCC_VERSION(2,5)
811 #define ecb_inline static __inline__
812#elif ECB_C99
813 #define ecb_inline static inline
814#else
815 #define ecb_inline static
816#endif
817
818#if ECB_GCC_VERSION(3,3)
819 #define ecb_restrict __restrict__
820#elif ECB_C99
821 #define ecb_restrict restrict
822#else
823 #define ecb_restrict
824#endif
825
826typedef int ecb_bool;
827
828#define ECB_CONCAT_(a, b) a ## b
829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
830#define ECB_STRINGIFY_(a) # a
831#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
832#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
833
834#define ecb_function_ ecb_inline
835
836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
837 #define ecb_attribute(attrlist) __attribute__ (attrlist)
838#else
839 #define ecb_attribute(attrlist)
840#endif
841
842#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
843 #define ecb_is_constant(expr) __builtin_constant_p (expr)
844#else
845 /* possible C11 impl for integral types
846 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
847 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
848
849 #define ecb_is_constant(expr) 0
850#endif
851
852#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
478# define expect(expr,value) __builtin_expect ((expr),(value)) 853 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
479# define noinline __attribute__ ((noinline))
480#else 854#else
481# define expect(expr,value) (expr) 855 #define ecb_expect(expr,value) (expr)
482# define noinline
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484# define inline
485# endif 856#endif
486#endif
487 857
858#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
860#else
861 #define ecb_prefetch(addr,rw,locality)
862#endif
863
864/* no emulation for ecb_decltype */
865#if ECB_CPP11
866 // older implementations might have problems with decltype(x)::type, work around it
867 template<class T> struct ecb_decltype_t { typedef T type; };
868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
870 #define ecb_decltype(x) __typeof__ (x)
871#endif
872
873#if _MSC_VER >= 1300
874 #define ecb_deprecated __declspec (deprecated)
875#else
876 #define ecb_deprecated ecb_attribute ((__deprecated__))
877#endif
878
879#if _MSC_VER >= 1500
880 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
881#elif ECB_GCC_VERSION(4,5)
882 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
883#else
884 #define ecb_deprecated_message(msg) ecb_deprecated
885#endif
886
887#if _MSC_VER >= 1400
888 #define ecb_noinline __declspec (noinline)
889#else
890 #define ecb_noinline ecb_attribute ((__noinline__))
891#endif
892
893#define ecb_unused ecb_attribute ((__unused__))
894#define ecb_const ecb_attribute ((__const__))
895#define ecb_pure ecb_attribute ((__pure__))
896
897#if ECB_C11 || __IBMC_NORETURN
898 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
899 #define ecb_noreturn _Noreturn
900#elif ECB_CPP11
901 #define ecb_noreturn [[noreturn]]
902#elif _MSC_VER >= 1200
903 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
904 #define ecb_noreturn __declspec (noreturn)
905#else
906 #define ecb_noreturn ecb_attribute ((__noreturn__))
907#endif
908
909#if ECB_GCC_VERSION(4,3)
910 #define ecb_artificial ecb_attribute ((__artificial__))
911 #define ecb_hot ecb_attribute ((__hot__))
912 #define ecb_cold ecb_attribute ((__cold__))
913#else
914 #define ecb_artificial
915 #define ecb_hot
916 #define ecb_cold
917#endif
918
919/* put around conditional expressions if you are very sure that the */
920/* expression is mostly true or mostly false. note that these return */
921/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 922#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 923#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
924/* for compatibility to the rest of the world */
925#define ecb_likely(expr) ecb_expect_true (expr)
926#define ecb_unlikely(expr) ecb_expect_false (expr)
927
928/* count trailing zero bits and count # of one bits */
929#if ECB_GCC_VERSION(3,4) \
930 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
931 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
932 && ECB_CLANG_BUILTIN(__builtin_popcount))
933 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
936 #define ecb_ctz32(x) __builtin_ctz (x)
937 #define ecb_ctz64(x) __builtin_ctzll (x)
938 #define ecb_popcount32(x) __builtin_popcount (x)
939 /* no popcountll */
940#else
941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz32 (uint32_t x)
944 {
945#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
946 unsigned long r;
947 _BitScanForward (&r, x);
948 return (int)r;
949#else
950 int r = 0;
951
952 x &= ~x + 1; /* this isolates the lowest bit */
953
954#if ECB_branchless_on_i386
955 r += !!(x & 0xaaaaaaaa) << 0;
956 r += !!(x & 0xcccccccc) << 1;
957 r += !!(x & 0xf0f0f0f0) << 2;
958 r += !!(x & 0xff00ff00) << 3;
959 r += !!(x & 0xffff0000) << 4;
960#else
961 if (x & 0xaaaaaaaa) r += 1;
962 if (x & 0xcccccccc) r += 2;
963 if (x & 0xf0f0f0f0) r += 4;
964 if (x & 0xff00ff00) r += 8;
965 if (x & 0xffff0000) r += 16;
966#endif
967
968 return r;
969#endif
970 }
971
972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
973 ecb_function_ ecb_const int
974 ecb_ctz64 (uint64_t x)
975 {
976#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
977 unsigned long r;
978 _BitScanForward64 (&r, x);
979 return (int)r;
980#else
981 int shift = x & 0xffffffff ? 0 : 32;
982 return ecb_ctz32 (x >> shift) + shift;
983#endif
984 }
985
986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
987 ecb_function_ ecb_const int
988 ecb_popcount32 (uint32_t x)
989 {
990 x -= (x >> 1) & 0x55555555;
991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
992 x = ((x >> 4) + x) & 0x0f0f0f0f;
993 x *= 0x01010101;
994
995 return x >> 24;
996 }
997
998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1000 {
1001#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1002 unsigned long r;
1003 _BitScanReverse (&r, x);
1004 return (int)r;
1005#else
1006 int r = 0;
1007
1008 if (x >> 16) { x >>= 16; r += 16; }
1009 if (x >> 8) { x >>= 8; r += 8; }
1010 if (x >> 4) { x >>= 4; r += 4; }
1011 if (x >> 2) { x >>= 2; r += 2; }
1012 if (x >> 1) { r += 1; }
1013
1014 return r;
1015#endif
1016 }
1017
1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1020 {
1021#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1022 unsigned long r;
1023 _BitScanReverse64 (&r, x);
1024 return (int)r;
1025#else
1026 int r = 0;
1027
1028 if (x >> 32) { x >>= 32; r += 32; }
1029
1030 return r + ecb_ld32 (x);
1031#endif
1032 }
1033#endif
1034
1035ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1036ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1037ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1038ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1039
1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1042{
1043 return ( (x * 0x0802U & 0x22110U)
1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1045}
1046
1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1049{
1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1053 x = ( x >> 8 ) | ( x << 8);
1054
1055 return x;
1056}
1057
1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1060{
1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1065 x = ( x >> 16 ) | ( x << 16);
1066
1067 return x;
1068}
1069
1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
1071/* so for this version we are lazy */
1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1073ecb_function_ ecb_const int
1074ecb_popcount64 (uint64_t x)
1075{
1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1077}
1078
1079ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1080ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1081ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1082ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1083ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1084ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1085ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1086ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1087
1088ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1089ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1090ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1091ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1092ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1093ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1094ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1095ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1096
1097#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1098 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1099 #define ecb_bswap16(x) __builtin_bswap16 (x)
1100 #else
1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
1104 #define ecb_bswap64(x) __builtin_bswap64 (x)
1105#elif _MSC_VER
1106 #include <stdlib.h>
1107 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1108 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1109 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1110#else
1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1112 ecb_function_ ecb_const uint16_t
1113 ecb_bswap16 (uint16_t x)
1114 {
1115 return ecb_rotl16 (x, 8);
1116 }
1117
1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1119 ecb_function_ ecb_const uint32_t
1120 ecb_bswap32 (uint32_t x)
1121 {
1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1123 }
1124
1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1126 ecb_function_ ecb_const uint64_t
1127 ecb_bswap64 (uint64_t x)
1128 {
1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1130 }
1131#endif
1132
1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1134 #define ecb_unreachable() __builtin_unreachable ()
1135#else
1136 /* this seems to work fine, but gcc always emits a warning for it :/ */
1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1139#endif
1140
1141/* try to tell the compiler that some condition is definitely true */
1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1143
1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1145ecb_inline ecb_const uint32_t
1146ecb_byteorder_helper (void)
1147{
1148 /* the union code still generates code under pressure in gcc, */
1149 /* but less than using pointers, and always seems to */
1150 /* successfully return a constant. */
1151 /* the reason why we have this horrible preprocessor mess */
1152 /* is to avoid it in all cases, at least on common architectures */
1153 /* or when using a recent enough gcc version (>= 4.6) */
1154#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1155 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1156 #define ECB_LITTLE_ENDIAN 1
1157 return 0x44332211;
1158#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1159 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1160 #define ECB_BIG_ENDIAN 1
1161 return 0x11223344;
1162#else
1163 union
1164 {
1165 uint8_t c[4];
1166 uint32_t u;
1167 } u = { 0x11, 0x22, 0x33, 0x44 };
1168 return u.u;
1169#endif
1170}
1171
1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1173ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1175ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1176
1177#if ECB_GCC_VERSION(3,0) || ECB_C99
1178 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1179#else
1180 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1181#endif
1182
1183#if ECB_CPP
1184 template<typename T>
1185 static inline T ecb_div_rd (T val, T div)
1186 {
1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1188 }
1189 template<typename T>
1190 static inline T ecb_div_ru (T val, T div)
1191 {
1192 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1193 }
1194#else
1195 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1196 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1197#endif
1198
1199#if ecb_cplusplus_does_not_suck
1200 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1201 template<typename T, int N>
1202 static inline int ecb_array_length (const T (&arr)[N])
1203 {
1204 return N;
1205 }
1206#else
1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1208#endif
1209
1210ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1211ecb_function_ ecb_const uint32_t
1212ecb_binary16_to_binary32 (uint32_t x)
1213{
1214 unsigned int s = (x & 0x8000) << (31 - 15);
1215 int e = (x >> 10) & 0x001f;
1216 unsigned int m = x & 0x03ff;
1217
1218 if (ecb_expect_false (e == 31))
1219 /* infinity or NaN */
1220 e = 255 - (127 - 15);
1221 else if (ecb_expect_false (!e))
1222 {
1223 if (ecb_expect_true (!m))
1224 /* zero, handled by code below by forcing e to 0 */
1225 e = 0 - (127 - 15);
1226 else
1227 {
1228 /* subnormal, renormalise */
1229 unsigned int s = 10 - ecb_ld32 (m);
1230
1231 m = (m << s) & 0x3ff; /* mask implicit bit */
1232 e -= s - 1;
1233 }
1234 }
1235
1236 /* e and m now are normalised, or zero, (or inf or nan) */
1237 e += 127 - 15;
1238
1239 return s | (e << 23) | (m << (23 - 10));
1240}
1241
1242ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1243ecb_function_ ecb_const uint16_t
1244ecb_binary32_to_binary16 (uint32_t x)
1245{
1246 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1247 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1248 unsigned int m = x & 0x007fffff;
1249
1250 x &= 0x7fffffff;
1251
1252 /* if it's within range of binary16 normals, use fast path */
1253 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1254 {
1255 /* mantissa round-to-even */
1256 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1257
1258 /* handle overflow */
1259 if (ecb_expect_false (m >= 0x00800000))
1260 {
1261 m >>= 1;
1262 e += 1;
1263 }
1264
1265 return s | (e << 10) | (m >> (23 - 10));
1266 }
1267
1268 /* handle large numbers and infinity */
1269 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1270 return s | 0x7c00;
1271
1272 /* handle zero, subnormals and small numbers */
1273 if (ecb_expect_true (x < 0x38800000))
1274 {
1275 /* zero */
1276 if (ecb_expect_true (!x))
1277 return s;
1278
1279 /* handle subnormals */
1280
1281 /* too small, will be zero */
1282 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1283 return s;
1284
1285 m |= 0x00800000; /* make implicit bit explicit */
1286
1287 /* very tricky - we need to round to the nearest e (+10) bit value */
1288 {
1289 unsigned int bits = 14 - e;
1290 unsigned int half = (1 << (bits - 1)) - 1;
1291 unsigned int even = (m >> bits) & 1;
1292
1293 /* if this overflows, we will end up with a normalised number */
1294 m = (m + half + even) >> bits;
1295 }
1296
1297 return s | m;
1298 }
1299
1300 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1301 m >>= 13;
1302
1303 return s | 0x7c00 | m | !m;
1304}
1305
1306/*******************************************************************************/
1307/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1308
1309/* basically, everything uses "ieee pure-endian" floating point numbers */
1310/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1311#if 0 \
1312 || __i386 || __i386__ \
1313 || ECB_GCC_AMD64 \
1314 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1315 || defined __s390__ || defined __s390x__ \
1316 || defined __mips__ \
1317 || defined __alpha__ \
1318 || defined __hppa__ \
1319 || defined __ia64__ \
1320 || defined __m68k__ \
1321 || defined __m88k__ \
1322 || defined __sh__ \
1323 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1324 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1325 || defined __aarch64__
1326 #define ECB_STDFP 1
1327 #include <string.h> /* for memcpy */
1328#else
1329 #define ECB_STDFP 0
1330#endif
1331
1332#ifndef ECB_NO_LIBM
1333
1334 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1335
1336 /* only the oldest of old doesn't have this one. solaris. */
1337 #ifdef INFINITY
1338 #define ECB_INFINITY INFINITY
1339 #else
1340 #define ECB_INFINITY HUGE_VAL
1341 #endif
1342
1343 #ifdef NAN
1344 #define ECB_NAN NAN
1345 #else
1346 #define ECB_NAN ECB_INFINITY
1347 #endif
1348
1349 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1350 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1351 #define ecb_frexpf(x,e) frexpf ((x), (e))
1352 #else
1353 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1354 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1355 #endif
1356
1357 /* convert a float to ieee single/binary32 */
1358 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1359 ecb_function_ ecb_const uint32_t
1360 ecb_float_to_binary32 (float x)
1361 {
1362 uint32_t r;
1363
1364 #if ECB_STDFP
1365 memcpy (&r, &x, 4);
1366 #else
1367 /* slow emulation, works for anything but -0 */
1368 uint32_t m;
1369 int e;
1370
1371 if (x == 0e0f ) return 0x00000000U;
1372 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1373 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1374 if (x != x ) return 0x7fbfffffU;
1375
1376 m = ecb_frexpf (x, &e) * 0x1000000U;
1377
1378 r = m & 0x80000000U;
1379
1380 if (r)
1381 m = -m;
1382
1383 if (e <= -126)
1384 {
1385 m &= 0xffffffU;
1386 m >>= (-125 - e);
1387 e = -126;
1388 }
1389
1390 r |= (e + 126) << 23;
1391 r |= m & 0x7fffffU;
1392 #endif
1393
1394 return r;
1395 }
1396
1397 /* converts an ieee single/binary32 to a float */
1398 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1399 ecb_function_ ecb_const float
1400 ecb_binary32_to_float (uint32_t x)
1401 {
1402 float r;
1403
1404 #if ECB_STDFP
1405 memcpy (&r, &x, 4);
1406 #else
1407 /* emulation, only works for normals and subnormals and +0 */
1408 int neg = x >> 31;
1409 int e = (x >> 23) & 0xffU;
1410
1411 x &= 0x7fffffU;
1412
1413 if (e)
1414 x |= 0x800000U;
1415 else
1416 e = 1;
1417
1418 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1419 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1420
1421 r = neg ? -r : r;
1422 #endif
1423
1424 return r;
1425 }
1426
1427 /* convert a double to ieee double/binary64 */
1428 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1429 ecb_function_ ecb_const uint64_t
1430 ecb_double_to_binary64 (double x)
1431 {
1432 uint64_t r;
1433
1434 #if ECB_STDFP
1435 memcpy (&r, &x, 8);
1436 #else
1437 /* slow emulation, works for anything but -0 */
1438 uint64_t m;
1439 int e;
1440
1441 if (x == 0e0 ) return 0x0000000000000000U;
1442 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1443 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1444 if (x != x ) return 0X7ff7ffffffffffffU;
1445
1446 m = frexp (x, &e) * 0x20000000000000U;
1447
1448 r = m & 0x8000000000000000;;
1449
1450 if (r)
1451 m = -m;
1452
1453 if (e <= -1022)
1454 {
1455 m &= 0x1fffffffffffffU;
1456 m >>= (-1021 - e);
1457 e = -1022;
1458 }
1459
1460 r |= ((uint64_t)(e + 1022)) << 52;
1461 r |= m & 0xfffffffffffffU;
1462 #endif
1463
1464 return r;
1465 }
1466
1467 /* converts an ieee double/binary64 to a double */
1468 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1469 ecb_function_ ecb_const double
1470 ecb_binary64_to_double (uint64_t x)
1471 {
1472 double r;
1473
1474 #if ECB_STDFP
1475 memcpy (&r, &x, 8);
1476 #else
1477 /* emulation, only works for normals and subnormals and +0 */
1478 int neg = x >> 63;
1479 int e = (x >> 52) & 0x7ffU;
1480
1481 x &= 0xfffffffffffffU;
1482
1483 if (e)
1484 x |= 0x10000000000000U;
1485 else
1486 e = 1;
1487
1488 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1489 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1490
1491 r = neg ? -r : r;
1492 #endif
1493
1494 return r;
1495 }
1496
1497 /* convert a float to ieee half/binary16 */
1498 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1499 ecb_function_ ecb_const uint16_t
1500 ecb_float_to_binary16 (float x)
1501 {
1502 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1503 }
1504
1505 /* convert an ieee half/binary16 to float */
1506 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1507 ecb_function_ ecb_const float
1508 ecb_binary16_to_float (uint16_t x)
1509 {
1510 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1511 }
1512
1513#endif
1514
1515#endif
1516
1517/* ECB.H END */
1518
1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1520/* if your architecture doesn't need memory fences, e.g. because it is
1521 * single-cpu/core, or if you use libev in a project that doesn't use libev
1522 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1523 * libev, in which cases the memory fences become nops.
1524 * alternatively, you can remove this #error and link against libpthread,
1525 * which will then provide the memory fences.
1526 */
1527# error "memory fences not defined for your architecture, please report"
1528#endif
1529
1530#ifndef ECB_MEMORY_FENCE
1531# define ECB_MEMORY_FENCE do { } while (0)
1532# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1533# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1534#endif
1535
1536#define expect_false(cond) ecb_expect_false (cond)
1537#define expect_true(cond) ecb_expect_true (cond)
1538#define noinline ecb_noinline
1539
490#define inline_size static inline 1540#define inline_size ecb_inline
491 1541
492#if EV_FEATURE_CODE 1542#if EV_FEATURE_CODE
493# define inline_speed static inline 1543# define inline_speed ecb_inline
494#else 1544#else
495# define inline_speed static noinline 1545# define inline_speed noinline static
496#endif 1546#endif
497 1547
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1549
500#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
502#else 1552#else
503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif 1554#endif
505 1555
506#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
507#define EMPTY2(a,b) /* used to suppress some warnings */
508 1557
509typedef ev_watcher *W; 1558typedef ev_watcher *W;
510typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
511typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
512 1561
… …
537# include "ev_win32.c" 1586# include "ev_win32.c"
538#endif 1587#endif
539 1588
540/*****************************************************************************/ 1589/*****************************************************************************/
541 1590
1591/* define a suitable floor function (only used by periodics atm) */
1592
1593#if EV_USE_FLOOR
1594# include <math.h>
1595# define ev_floor(v) floor (v)
1596#else
1597
1598#include <float.h>
1599
1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
1602static ev_tstamp
1603ev_floor (ev_tstamp v)
1604{
1605 /* the choice of shift factor is not terribly important */
1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1608#else
1609 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1610#endif
1611
1612 /* argument too large for an unsigned long? */
1613 if (expect_false (v >= shift))
1614 {
1615 ev_tstamp f;
1616
1617 if (v == v - 1.)
1618 return v; /* very large number */
1619
1620 f = shift * ev_floor (v * (1. / shift));
1621 return f + ev_floor (v - f);
1622 }
1623
1624 /* special treatment for negative args? */
1625 if (expect_false (v < 0.))
1626 {
1627 ev_tstamp f = -ev_floor (-v);
1628
1629 return f - (f == v ? 0 : 1);
1630 }
1631
1632 /* fits into an unsigned long */
1633 return (unsigned long)v;
1634}
1635
1636#endif
1637
1638/*****************************************************************************/
1639
1640#ifdef __linux
1641# include <sys/utsname.h>
1642#endif
1643
1644noinline ecb_cold
1645static unsigned int
1646ev_linux_version (void)
1647{
1648#ifdef __linux
1649 unsigned int v = 0;
1650 struct utsname buf;
1651 int i;
1652 char *p = buf.release;
1653
1654 if (uname (&buf))
1655 return 0;
1656
1657 for (i = 3+1; --i; )
1658 {
1659 unsigned int c = 0;
1660
1661 for (;;)
1662 {
1663 if (*p >= '0' && *p <= '9')
1664 c = c * 10 + *p++ - '0';
1665 else
1666 {
1667 p += *p == '.';
1668 break;
1669 }
1670 }
1671
1672 v = (v << 8) | c;
1673 }
1674
1675 return v;
1676#else
1677 return 0;
1678#endif
1679}
1680
1681/*****************************************************************************/
1682
542#if EV_AVOID_STDIO 1683#if EV_AVOID_STDIO
543static void noinline 1684noinline ecb_cold
1685static void
544ev_printerr (const char *msg) 1686ev_printerr (const char *msg)
545{ 1687{
546 write (STDERR_FILENO, msg, strlen (msg)); 1688 write (STDERR_FILENO, msg, strlen (msg));
547} 1689}
548#endif 1690#endif
549 1691
550static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1693
1694ecb_cold
552void 1695void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1697{
555 syserr_cb = cb; 1698 syserr_cb = cb;
556} 1699}
557 1700
558static void noinline 1701noinline ecb_cold
1702static void
559ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
560{ 1704{
561 if (!msg) 1705 if (!msg)
562 msg = "(libev) system error"; 1706 msg = "(libev) system error";
563 1707
564 if (syserr_cb) 1708 if (syserr_cb)
565 syserr_cb (msg); 1709 syserr_cb (msg);
566 else 1710 else
567 { 1711 {
568#if EV_AVOID_STDIO 1712#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1713 ev_printerr (msg);
572 ev_printerr (": "); 1714 ev_printerr (": ");
573 ev_printerr (err); 1715 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1716 ev_printerr ("\n");
575#else 1717#else
576 perror (msg); 1718 perror (msg);
577#endif 1719#endif
578 abort (); 1720 abort ();
579 } 1721 }
580} 1722}
581 1723
582static void * 1724static void *
583ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 1726{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1728 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1729 * the single unix specification, so work around them here.
1730 * recently, also (at least) fedora and debian started breaking it,
1731 * despite documenting it otherwise.
591 */ 1732 */
592 1733
593 if (size) 1734 if (size)
594 return realloc (ptr, size); 1735 return realloc (ptr, size);
595 1736
596 free (ptr); 1737 free (ptr);
597 return 0; 1738 return 0;
598#endif
599} 1739}
600 1740
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 1742
1743ecb_cold
603void 1744void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 1746{
606 alloc = cb; 1747 alloc = cb;
607} 1748}
608 1749
609inline_speed void * 1750inline_speed void *
… …
612 ptr = alloc (ptr, size); 1753 ptr = alloc (ptr, size);
613 1754
614 if (!ptr && size) 1755 if (!ptr && size)
615 { 1756 {
616#if EV_AVOID_STDIO 1757#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1758 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1759#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1760 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1761#endif
621 abort (); 1762 abort ();
622 } 1763 }
623 1764
624 return ptr; 1765 return ptr;
… …
636typedef struct 1777typedef struct
637{ 1778{
638 WL head; 1779 WL head;
639 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1781 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1782 unsigned char emask; /* some backends store the actual kernel mask in here */
642 unsigned char unused; 1783 unsigned char unused;
643#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1786#endif
646#if EV_SELECT_IS_WINSOCKET 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1788 SOCKET handle;
1789#endif
1790#if EV_USE_IOCP
1791 OVERLAPPED or, ow;
648#endif 1792#endif
649} ANFD; 1793} ANFD;
650 1794
651/* stores the pending event set for a given watcher */ 1795/* stores the pending event set for a given watcher */
652typedef struct 1796typedef struct
… …
694 #undef VAR 1838 #undef VAR
695 }; 1839 };
696 #include "ev_wrap.h" 1840 #include "ev_wrap.h"
697 1841
698 static struct ev_loop default_loop_struct; 1842 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1843 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1844
701#else 1845#else
702 1846
703 ev_tstamp ev_rt_now; 1847 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 1848 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1849 #include "ev_vars.h"
706 #undef VAR 1850 #undef VAR
707 1851
708 static int ev_default_loop_ptr; 1852 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1861# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1862# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1863# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1864#endif
721 1865
722#define EVUNLOOP_RECURSE 0x80 1866#define EVBREAK_RECURSE 0x80
723 1867
724/*****************************************************************************/ 1868/*****************************************************************************/
725 1869
726#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1871ev_tstamp
728ev_time (void) 1872ev_time (void) EV_NOEXCEPT
729{ 1873{
730#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
732 { 1876 {
733 struct timespec ts; 1877 struct timespec ts;
… …
757 return ev_time (); 1901 return ev_time ();
758} 1902}
759 1903
760#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
761ev_tstamp 1905ev_tstamp
762ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
763{ 1907{
764 return ev_rt_now; 1908 return ev_rt_now;
765} 1909}
766#endif 1910#endif
767 1911
768void 1912void
769ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 1914{
771 if (delay > 0.) 1915 if (delay > 0.)
772 { 1916 {
773#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
774 struct timespec ts; 1918 struct timespec ts;
775 1919
776 EV_TS_SET (ts, delay); 1920 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1922#elif defined _WIN32
1923 /* maybe this should round up, as ms is very low resolution */
1924 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
780#else 1926#else
781 struct timeval tv; 1927 struct timeval tv;
782 1928
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1929 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1948
803 do 1949 do
804 ncur <<= 1; 1950 ncur <<= 1;
805 while (cnt > ncur); 1951 while (cnt > ncur);
806 1952
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1953 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1954 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1955 {
810 ncur *= elem; 1956 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1957 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1958 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1960 }
815 1961
816 return ncur; 1962 return ncur;
817} 1963}
818 1964
819static noinline void * 1965noinline ecb_cold
1966static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1968{
822 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
824} 1971}
825 1972
1973#define array_needsize_noinit(base,count)
1974
826#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1977
829#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
831 { \ 1980 { \
832 int ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1985 }
837 1986
… …
849 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1998 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 1999
851/*****************************************************************************/ 2000/*****************************************************************************/
852 2001
853/* dummy callback for pending events */ 2002/* dummy callback for pending events */
854static void noinline 2003noinline
2004static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 2006{
857} 2007}
858 2008
859void noinline 2009noinline
2010void
860ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2012{
862 W w_ = (W)w; 2013 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
864 2015
865 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
866 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
867 else 2018 else
868 { 2019 {
869 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
871 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
873 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
874} 2027}
875 2028
876inline_speed void 2029inline_speed void
877feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
878{ 2031{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
880 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
881} 2034}
882 2035
883inline_size void 2036inline_size void
884feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
924 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
926} 2079}
927 2080
928void 2081void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2083{
931 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
933} 2086}
934 2087
… …
937inline_size void 2090inline_size void
938fd_reify (EV_P) 2091fd_reify (EV_P)
939{ 2092{
940 int i; 2093 int i;
941 2094
2095#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2096 for (i = 0; i < fdchangecnt; ++i)
2097 {
2098 int fd = fdchanges [i];
2099 ANFD *anfd = anfds + fd;
2100
2101 if (anfd->reify & EV__IOFDSET && anfd->head)
2102 {
2103 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2104
2105 if (handle != anfd->handle)
2106 {
2107 unsigned long arg;
2108
2109 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2110
2111 /* handle changed, but fd didn't - we need to do it in two steps */
2112 backend_modify (EV_A_ fd, anfd->events, 0);
2113 anfd->events = 0;
2114 anfd->handle = handle;
2115 }
2116 }
2117 }
2118#endif
2119
942 for (i = 0; i < fdchangecnt; ++i) 2120 for (i = 0; i < fdchangecnt; ++i)
943 { 2121 {
944 int fd = fdchanges [i]; 2122 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2123 ANFD *anfd = anfds + fd;
946 ev_io *w; 2124 ev_io *w;
… …
948 unsigned char o_events = anfd->events; 2126 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 2127 unsigned char o_reify = anfd->reify;
950 2128
951 anfd->reify = 0; 2129 anfd->reify = 0;
952 2130
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2131 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 2132 {
964 anfd->events = 0; 2133 anfd->events = 0;
965 2134
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2135 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
976 2145
977 fdchangecnt = 0; 2146 fdchangecnt = 0;
978} 2147}
979 2148
980/* something about the given fd changed */ 2149/* something about the given fd changed */
981inline_size void 2150inline_size
2151void
982fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
983{ 2153{
984 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
985 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
986 2156
987 if (expect_true (!reify)) 2157 if (expect_true (!reify))
988 { 2158 {
989 ++fdchangecnt; 2159 ++fdchangecnt;
990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
991 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
992 } 2162 }
993} 2163}
994 2164
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2165/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 2166inline_speed ecb_cold void
997fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
998{ 2168{
999 ev_io *w; 2169 ev_io *w;
1000 2170
1001 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2174 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 2175 }
1006} 2176}
1007 2177
1008/* check whether the given fd is actually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 2179inline_size ecb_cold int
1010fd_valid (int fd) 2180fd_valid (int fd)
1011{ 2181{
1012#ifdef _WIN32 2182#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 2184#else
1015 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
1016#endif 2186#endif
1017} 2187}
1018 2188
1019/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
1020static void noinline 2190noinline ecb_cold
2191static void
1021fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
1022{ 2193{
1023 int fd; 2194 int fd;
1024 2195
1025 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
1029} 2200}
1030 2201
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 2202/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 2203noinline ecb_cold
2204static void
1033fd_enomem (EV_P) 2205fd_enomem (EV_P)
1034{ 2206{
1035 int fd; 2207 int fd;
1036 2208
1037 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1041 break; 2213 break;
1042 } 2214 }
1043} 2215}
1044 2216
1045/* usually called after fork if backend needs to re-arm all fds from scratch */ 2217/* usually called after fork if backend needs to re-arm all fds from scratch */
1046static void noinline 2218noinline
2219static void
1047fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1048{ 2221{
1049 int fd; 2222 int fd;
1050 2223
1051 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1232 2405
1233/*****************************************************************************/ 2406/*****************************************************************************/
1234 2407
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2409
1237static void noinline 2410noinline ecb_cold
2411static void
1238evpipe_init (EV_P) 2412evpipe_init (EV_P)
1239{ 2413{
1240 if (!ev_is_active (&pipe_w)) 2414 if (!ev_is_active (&pipe_w))
1241 { 2415 {
2416 int fds [2];
2417
1242# if EV_USE_EVENTFD 2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2421 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2422 fds [1] = eventfd (0, 0);
1246 2423
1247 if (evfd >= 0) 2424 if (fds [1] < 0)
2425# endif
1248 { 2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
1249 evpipe [0] = -1; 2433 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2434
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2435 if (evpipe [1] < 0)
2436 evpipe [1] = fds [1]; /* first call, set write fd */
2437 else
2438 {
2439 /* on subsequent calls, do not change evpipe [1] */
2440 /* so that evpipe_write can always rely on its value. */
2441 /* this branch does not do anything sensible on windows, */
2442 /* so must not be executed on windows */
2443
2444 dup2 (fds [1], evpipe [1]);
2445 close (fds [1]);
2446 }
2447
2448 fd_intern (evpipe [1]);
2449
2450 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2451 ev_io_start (EV_A_ &pipe_w);
2452 ev_unref (EV_A); /* watcher should not keep loop alive */
2453 }
2454}
2455
2456inline_speed void
2457evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2458{
2459 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2460
2461 if (expect_true (*flag))
2462 return;
2463
2464 *flag = 1;
2465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2466
2467 pipe_write_skipped = 1;
2468
2469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2470
2471 if (pipe_write_wanted)
2472 {
2473 int old_errno;
2474
2475 pipe_write_skipped = 0;
2476 ECB_MEMORY_FENCE_RELEASE;
2477
2478 old_errno = errno; /* save errno because write will clobber it */
2479
2480#if EV_USE_EVENTFD
2481 if (evpipe [0] < 0)
2482 {
2483 uint64_t counter = 1;
2484 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2485 }
1253 else 2486 else
1254# endif 2487#endif
1255 { 2488 {
1256 while (pipe (evpipe)) 2489#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1258 2491 DWORD sent;
1259 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1260 fd_intern (evpipe [1]); 2493 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2495#else
2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1262 } 2498 }
1263
1264 ev_io_start (EV_A_ &pipe_w);
1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1266 }
1267}
1268
1269inline_size void
1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271{
1272 if (!*flag)
1273 {
1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1276
1277 *flag = 1;
1278
1279#if EV_USE_EVENTFD
1280 if (evfd >= 0)
1281 {
1282 uint64_t counter = 1;
1283 write (evfd, &counter, sizeof (uint64_t));
1284 }
1285 else
1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1292 write (evpipe [1], &dummy, 1);
1293 2499
1294 errno = old_errno; 2500 errno = old_errno;
1295 } 2501 }
1296} 2502}
1297 2503
… …
1300static void 2506static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2507pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2508{
1303 int i; 2509 int i;
1304 2510
2511 if (revents & EV_READ)
2512 {
1305#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1307 { 2515 {
1308 uint64_t counter; 2516 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2518 }
1311 else 2519 else
1312#endif 2520#endif
1313 { 2521 {
1314 char dummy; 2522 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2523#ifdef _WIN32
2524 WSABUF buf;
2525 DWORD recvd;
2526 DWORD flags = 0;
2527 buf.buf = dummy;
2528 buf.len = sizeof (dummy);
2529 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2530#else
1316 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
2533 }
1317 } 2534 }
1318 2535
2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2539
2540#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2541 if (sig_pending)
1320 { 2542 {
1321 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1322 2546
1323 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2550 }
2551#endif
1327 2552
1328#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1329 if (async_pending) 2554 if (async_pending)
1330 { 2555 {
1331 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1332 2559
1333 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1335 { 2562 {
1336 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2566 }
1339 } 2567 }
1340#endif 2568#endif
1341} 2569}
1342 2570
1343/*****************************************************************************/ 2571/*****************************************************************************/
1344 2572
2573void
2574ev_feed_signal (int signum) EV_NOEXCEPT
2575{
2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
2579 EV_A = signals [signum - 1].loop;
2580
2581 if (!EV_A)
2582 return;
2583#endif
2584
2585 signals [signum - 1].pending = 1;
2586 evpipe_write (EV_A_ &sig_pending);
2587}
2588
1345static void 2589static void
1346ev_sighandler (int signum) 2590ev_sighandler (int signum)
1347{ 2591{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2592#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2593 signal (signum, ev_sighandler);
1354#endif 2594#endif
1355 2595
1356 signals [signum - 1].pending = 1; 2596 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2597}
1359 2598
1360void noinline 2599noinline
2600void
1361ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1362{ 2602{
1363 WL w; 2603 WL w;
1364 2604
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2606 return;
1367 2607
1368 --signum; 2608 --signum;
1369 2609
1370#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1374 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1375 return; 2615 return;
1376#endif 2616#endif
1377 2617
1378 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1379 2620
1380 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2623}
1383 2624
… …
1462 2703
1463#endif 2704#endif
1464 2705
1465/*****************************************************************************/ 2706/*****************************************************************************/
1466 2707
2708#if EV_USE_IOCP
2709# include "ev_iocp.c"
2710#endif
1467#if EV_USE_PORT 2711#if EV_USE_PORT
1468# include "ev_port.c" 2712# include "ev_port.c"
1469#endif 2713#endif
1470#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
1472#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
1473#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
1474# include "ev_epoll.c" 2721# include "ev_epoll.c"
1475#endif 2722#endif
1476#if EV_USE_POLL 2723#if EV_USE_POLL
1477# include "ev_poll.c" 2724# include "ev_poll.c"
1478#endif 2725#endif
1479#if EV_USE_SELECT 2726#if EV_USE_SELECT
1480# include "ev_select.c" 2727# include "ev_select.c"
1481#endif 2728#endif
1482 2729
1483int 2730ecb_cold int
1484ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
1485{ 2732{
1486 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
1487} 2734}
1488 2735
1489int 2736ecb_cold int
1490ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
1491{ 2738{
1492 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
1493} 2740}
1494 2741
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2742/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2743inline_size ecb_cold int
1497enable_secure (void) 2744enable_secure (void)
1498{ 2745{
1499#ifdef _WIN32 2746#ifdef _WIN32
1500 return 0; 2747 return 0;
1501#else 2748#else
1502 return getuid () != geteuid () 2749 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2750 || getgid () != getegid ();
1504#endif 2751#endif
1505} 2752}
1506 2753
2754ecb_cold
1507unsigned int 2755unsigned int
1508ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
1509{ 2757{
1510 unsigned int flags = 0; 2758 unsigned int flags = 0;
1511 2759
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1514 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1515 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1517 2766
1518 return flags; 2767 return flags;
1519} 2768}
1520 2769
2770ecb_cold
1521unsigned int 2771unsigned int
1522ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
1523{ 2773{
1524 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
1525 2775
1526#ifndef __NetBSD__ 2776#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
1538#endif 2788#endif
1539 2789
1540 return flags; 2790 return flags;
1541} 2791}
1542 2792
2793ecb_cold
1543unsigned int 2794unsigned int
1544ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
1545{ 2796{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1547 2798
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2799 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */ 2800 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550 flags &= ~EVBACKEND_EPOLL; 2801 flags &= ~EVBACKEND_EPOLL;
1551 2802
1552 return flags; 2803 return flags;
1553} 2804}
1554 2805
1555unsigned int 2806unsigned int
1556ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
1557{ 2808{
1558 return backend; 2809 return backend;
1559} 2810}
1560 2811
1561#if EV_FEATURE_API 2812#if EV_FEATURE_API
1562unsigned int 2813unsigned int
1563ev_iteration (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
1564{ 2815{
1565 return loop_count; 2816 return loop_count;
1566} 2817}
1567 2818
1568unsigned int 2819unsigned int
1569ev_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
1570{ 2821{
1571 return loop_depth; 2822 return loop_depth;
1572} 2823}
1573 2824
1574void 2825void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1576{ 2827{
1577 io_blocktime = interval; 2828 io_blocktime = interval;
1578} 2829}
1579 2830
1580void 2831void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1582{ 2833{
1583 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
1584} 2835}
1585 2836
1586void 2837void
1587ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1588{ 2839{
1589 userdata = data; 2840 userdata = data;
1590} 2841}
1591 2842
1592void * 2843void *
1593ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
1594{ 2845{
1595 return userdata; 2846 return userdata;
1596} 2847}
1597 2848
2849void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2850ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1599{ 2851{
1600 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
1601} 2853}
1602 2854
2855void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2856ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1604{ 2857{
1605 release_cb = release; 2858 release_cb = release;
1606 acquire_cb = acquire; 2859 acquire_cb = acquire;
1607} 2860}
1608#endif 2861#endif
1609 2862
1610/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
1611static void noinline 2864noinline ecb_cold
2865static void
1612loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1613{ 2867{
1614 if (!backend) 2868 if (!backend)
1615 { 2869 {
2870 origflags = flags;
2871
1616#if EV_USE_REALTIME 2872#if EV_USE_REALTIME
1617 if (!have_realtime) 2873 if (!have_realtime)
1618 { 2874 {
1619 struct timespec ts; 2875 struct timespec ts;
1620 2876
… …
1642 if (!(flags & EVFLAG_NOENV) 2898 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 2899 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 2900 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 2901 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 2902
1647 ev_rt_now = ev_time (); 2903 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 2904 mn_now = get_clock ();
1649 now_floor = mn_now; 2905 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 2906 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 2907#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 2908 invoke_cb = ev_invoke_pending;
1653#endif 2909#endif
1654 2910
1655 io_blocktime = 0.; 2911 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 2912 timeout_blocktime = 0.;
1657 backend = 0; 2913 backend = 0;
1658 backend_fd = -1; 2914 backend_fd = -1;
1659 sig_pending = 0; 2915 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
1661 async_pending = 0; 2917 async_pending = 0;
1662#endif 2918#endif
2919 pipe_write_skipped = 0;
2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 2925#endif
1666#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 2928#endif
1669 2929
1670 if (!(flags & 0x0000ffffU)) 2930 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
1672 2932
2933#if EV_USE_IOCP
2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2935#endif
1673#if EV_USE_PORT 2936#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 2938#endif
1676#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2940 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2941#endif
2942#if EV_USE_LINUXAIO
2943 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1678#endif 2944#endif
1679#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
1680 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1681#endif 2947#endif
1682#if EV_USE_POLL 2948#if EV_USE_POLL
1683 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1684#endif 2950#endif
1685#if EV_USE_SELECT 2951#if EV_USE_SELECT
1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1687#endif 2953#endif
1688 2954
1689 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
1690 2956
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1694#endif 2960#endif
1695 } 2961 }
1696} 2962}
1697 2963
1698/* free up a loop structure */ 2964/* free up a loop structure */
1699static void noinline 2965ecb_cold
2966void
1700loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
1701{ 2968{
1702 int i; 2969 int i;
2970
2971#if EV_MULTIPLICITY
2972 /* mimic free (0) */
2973 if (!EV_A)
2974 return;
2975#endif
2976
2977#if EV_CLEANUP_ENABLE
2978 /* queue cleanup watchers (and execute them) */
2979 if (expect_false (cleanupcnt))
2980 {
2981 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2982 EV_INVOKE_PENDING;
2983 }
2984#endif
2985
2986#if EV_CHILD_ENABLE
2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2988 {
2989 ev_ref (EV_A); /* child watcher */
2990 ev_signal_stop (EV_A_ &childev);
2991 }
2992#endif
1703 2993
1704 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
1705 { 2995 {
1706 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 2998
1709#if EV_USE_EVENTFD
1710 if (evfd >= 0)
1711 close (evfd);
1712#endif
1713
1714 if (evpipe [0] >= 0)
1715 {
1716 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 3001 }
1720 3002
1721#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 3005 close (sigfd);
… …
1729#endif 3011#endif
1730 3012
1731 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
1732 close (backend_fd); 3014 close (backend_fd);
1733 3015
3016#if EV_USE_IOCP
3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3018#endif
1734#if EV_USE_PORT 3019#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 3021#endif
1737#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3023 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3024#endif
3025#if EV_USE_LINUXAIO
3026 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1739#endif 3027#endif
1740#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
1741 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1742#endif 3030#endif
1743#if EV_USE_POLL 3031#if EV_USE_POLL
1744 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1745#endif 3033#endif
1746#if EV_USE_SELECT 3034#if EV_USE_SELECT
1747 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1748#endif 3036#endif
1749 3037
1750 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
1751 { 3039 {
1752 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
1765 array_free (periodic, EMPTY); 3053 array_free (periodic, EMPTY);
1766#endif 3054#endif
1767#if EV_FORK_ENABLE 3055#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 3056 array_free (fork, EMPTY);
1769#endif 3057#endif
3058#if EV_CLEANUP_ENABLE
3059 array_free (cleanup, EMPTY);
3060#endif
1770 array_free (prepare, EMPTY); 3061 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 3062 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 3063#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 3064 array_free (async, EMPTY);
1774#endif 3065#endif
1775 3066
1776 backend = 0; 3067 backend = 0;
3068
3069#if EV_MULTIPLICITY
3070 if (ev_is_default_loop (EV_A))
3071#endif
3072 ev_default_loop_ptr = 0;
3073#if EV_MULTIPLICITY
3074 else
3075 ev_free (EV_A);
3076#endif
1777} 3077}
1778 3078
1779#if EV_USE_INOTIFY 3079#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 3080inline_size void infy_fork (EV_P);
1781#endif 3081#endif
1782 3082
1783inline_size void 3083inline_size void
1784loop_fork (EV_P) 3084loop_fork (EV_P)
1785{ 3085{
1786#if EV_USE_PORT 3086#if EV_USE_PORT
1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1788#endif 3088#endif
1789#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
1790 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3090 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3091#endif
3092#if EV_USE_LINUXAIO
3093 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1791#endif 3094#endif
1792#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
1793 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1794#endif 3097#endif
1795#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 3099 infy_fork (EV_A);
1797#endif 3100#endif
1798 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
1800 { 3104 {
1801 /* this "locks" the handlers against writing to the pipe */ 3105 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802 /* while we modify the fd vars */
1803 sig_pending = 1;
1804#if EV_ASYNC_ENABLE
1805 async_pending = 1;
1806#endif
1807 3106
1808 ev_ref (EV_A); 3107 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
1810 3109
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1820 }
1821 3112
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
1825 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1826#endif
1827 } 3116 }
3117#endif
1828 3118
1829 postfork = 0; 3119 postfork = 0;
1830} 3120}
1831 3121
1832#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
1833 3123
3124ecb_cold
1834struct ev_loop * 3125struct ev_loop *
1835ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
1836{ 3127{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 3129
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
1841 3132
1842 if (ev_backend (EV_A)) 3133 if (ev_backend (EV_A))
1843 return EV_A; 3134 return EV_A;
1844 3135
3136 ev_free (EV_A);
1845 return 0; 3137 return 0;
1846} 3138}
1847 3139
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 3140#endif /* multiplicity */
1861 3141
1862#if EV_VERIFY 3142#if EV_VERIFY
1863static void noinline 3143noinline ecb_cold
3144static void
1864verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
1865{ 3146{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3147 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 3148
1868 if (w->pending) 3149 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3150 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 3151}
1871 3152
1872static void noinline 3153noinline ecb_cold
3154static void
1873verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
1874{ 3156{
1875 int i; 3157 int i;
1876 3158
1877 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 3164
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 3166 }
1885} 3167}
1886 3168
1887static void noinline 3169noinline ecb_cold
3170static void
1888array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
1889{ 3172{
1890 while (cnt--) 3173 while (cnt--)
1891 { 3174 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 3177 }
1895} 3178}
1896#endif 3179#endif
1897 3180
1898#if EV_FEATURE_API 3181#if EV_FEATURE_API
1899void 3182void ecb_cold
1900ev_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
1901{ 3184{
1902#if EV_VERIFY 3185#if EV_VERIFY
1903 int i; 3186 int i;
1904 WL w; 3187 WL w, w2;
1905 3188
1906 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
1907 3190
1908 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 3194
1912 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
1914 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 3201 {
1916 verify_watcher (EV_A_ (W)w); 3202 verify_watcher (EV_A_ (W)w);
3203
3204 if (j++ & 1)
3205 {
3206 assert (("libev: io watcher list contains a loop", w != w2));
3207 w2 = w2->next;
3208 }
3209
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3210 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3211 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 3212 }
3213 }
1920 3214
1921 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
1923 3217
1924#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 3233#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 3234 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 3235 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 3236#endif
1943 3237
3238#if EV_CLEANUP_ENABLE
3239 assert (cleanupmax >= cleanupcnt);
3240 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3241#endif
3242
1944#if EV_ASYNC_ENABLE 3243#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 3244 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 3245 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 3246#endif
1948 3247
… …
1965#endif 3264#endif
1966} 3265}
1967#endif 3266#endif
1968 3267
1969#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
1970struct ev_loop * 3270struct ev_loop *
1971ev_default_loop_init (unsigned int flags)
1972#else 3271#else
1973int 3272int
3273#endif
1974ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
1975#endif
1976{ 3275{
1977 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
1978 { 3277 {
1979#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 3298
2000 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
2001} 3300}
2002 3301
2003void 3302void
2004ev_default_destroy (void) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
2005{ 3304{
2006#if EV_MULTIPLICITY 3305 postfork = 1;
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */
2028} 3306}
2029 3307
2030/*****************************************************************************/ 3308/*****************************************************************************/
2031 3309
2032void 3310void
… …
2034{ 3312{
2035 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
2036} 3314}
2037 3315
2038unsigned int 3316unsigned int
2039ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
2040{ 3318{
2041 int pri; 3319 int pri;
2042 unsigned int count = 0; 3320 unsigned int count = 0;
2043 3321
2044 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
2045 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
2046 3324
2047 return count; 3325 return count;
2048} 3326}
2049 3327
2050void noinline 3328noinline
3329void
2051ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
2052{ 3331{
2053 int pri; 3332 pendingpri = NUMPRI;
2054 3333
2055 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
2056 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
2057 { 3340 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3342
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062
2063 p->w->pending = 0; 3343 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2066 } 3346 }
3347 }
3348 while (pendingpri);
2067} 3349}
2068 3350
2069#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3410 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3411 }
2130} 3412}
2131 3413
2132#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
3415
3416noinline
3417static void
3418periodic_recalc (EV_P_ ev_periodic *w)
3419{
3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3421 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3422
3423 /* the above almost always errs on the low side */
3424 while (at <= ev_rt_now)
3425 {
3426 ev_tstamp nat = at + w->interval;
3427
3428 /* when resolution fails us, we use ev_rt_now */
3429 if (expect_false (nat == at))
3430 {
3431 at = ev_rt_now;
3432 break;
3433 }
3434
3435 at = nat;
3436 }
3437
3438 ev_at (w) = at;
3439}
3440
2133/* make periodics pending */ 3441/* make periodics pending */
2134inline_size void 3442inline_size void
2135periodics_reify (EV_P) 3443periodics_reify (EV_P)
2136{ 3444{
2137 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2138 3446
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3448 {
2141 int feed_count = 0;
2142
2143 do 3449 do
2144 { 3450 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3452
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3453 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3462 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3463 downheap (periodics, periodiccnt, HEAP0);
2158 } 3464 }
2159 else if (w->interval) 3465 else if (w->interval)
2160 { 3466 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3467 periodic_recalc (EV_A_ w);
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]); 3468 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3469 downheap (periodics, periodiccnt, HEAP0);
2177 } 3470 }
2178 else 3471 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3472 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3480 }
2188} 3481}
2189 3482
2190/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3484/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3485noinline ecb_cold
3486static void
2193periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2194{ 3488{
2195 int i; 3489 int i;
2196 3490
2197 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3494 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3495
2202 if (w->reschedule_cb) 3496 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3497 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3498 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3499 periodic_recalc (EV_A_ w);
2206 3500
2207 ANHE_at_cache (periodics [i]); 3501 ANHE_at_cache (periodics [i]);
2208 } 3502 }
2209 3503
2210 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2211} 3505}
2212#endif 3506#endif
2213 3507
2214/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2215static void noinline 3509noinline ecb_cold
3510static void
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3512{
2218 int i; 3513 int i;
2219 3514
2220 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3552 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3553 * in the unlikely event of having been preempted here.
2259 */ 3554 */
2260 for (i = 4; --i; ) 3555 for (i = 4; --i; )
2261 { 3556 {
3557 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3558 rtmn_diff = ev_rt_now - mn_now;
2263 3559
3560 diff = odiff - rtmn_diff;
3561
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3562 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265 return; /* all is well */ 3563 return; /* all is well */
2266 3564
2267 ev_rt_now = ev_time (); 3565 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3566 mn_now = get_clock ();
2269 now_floor = mn_now; 3567 now_floor = mn_now;
… …
2291 3589
2292 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2293 } 3591 }
2294} 3592}
2295 3593
2296void 3594int
2297ev_loop (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2298{ 3596{
2299#if EV_FEATURE_API 3597#if EV_FEATURE_API
2300 ++loop_depth; 3598 ++loop_depth;
2301#endif 3599#endif
2302 3600
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3601 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 3602
2305 loop_done = EVUNLOOP_CANCEL; 3603 loop_done = EVBREAK_CANCEL;
2306 3604
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3605 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 3606
2309 do 3607 do
2310 { 3608 {
… …
2353 /* calculate blocking time */ 3651 /* calculate blocking time */
2354 { 3652 {
2355 ev_tstamp waittime = 0.; 3653 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 3654 ev_tstamp sleeptime = 0.;
2357 3655
3656 /* remember old timestamp for io_blocktime calculation */
3657 ev_tstamp prev_mn_now = mn_now;
3658
3659 /* update time to cancel out callback processing overhead */
3660 time_update (EV_A_ 1e100);
3661
3662 /* from now on, we want a pipe-wake-up */
3663 pipe_write_wanted = 1;
3664
3665 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3666
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3667 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2359 { 3668 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
2363 /* update time to cancel out callback processing overhead */
2364 time_update (EV_A_ 1e100);
2365
2366 waittime = MAX_BLOCKTIME; 3669 waittime = MAX_BLOCKTIME;
2367 3670
2368 if (timercnt) 3671 if (timercnt)
2369 { 3672 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3673 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3674 if (waittime > to) waittime = to;
2372 } 3675 }
2373 3676
2374#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3678 if (periodiccnt)
2376 { 3679 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3680 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3681 if (waittime > to) waittime = to;
2379 } 3682 }
2380#endif 3683#endif
2381 3684
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3685 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3686 if (expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3687 waittime = timeout_blocktime;
3688
3689 /* at this point, we NEED to wait, so we have to ensure */
3690 /* to pass a minimum nonzero value to the backend */
3691 if (expect_false (waittime < backend_mintime))
3692 waittime = backend_mintime;
2385 3693
2386 /* extra check because io_blocktime is commonly 0 */ 3694 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3695 if (expect_false (io_blocktime))
2388 { 3696 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3697 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 3698
2391 if (sleeptime > waittime - backend_fudge) 3699 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 3700 sleeptime = waittime - backend_mintime;
2393 3701
2394 if (expect_true (sleeptime > 0.)) 3702 if (expect_true (sleeptime > 0.))
2395 { 3703 {
2396 ev_sleep (sleeptime); 3704 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 3705 waittime -= sleeptime;
… …
2400 } 3708 }
2401 3709
2402#if EV_FEATURE_API 3710#if EV_FEATURE_API
2403 ++loop_count; 3711 ++loop_count;
2404#endif 3712#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3713 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3716
3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3720 if (pipe_write_skipped)
3721 {
3722 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3724 }
3725
2408 3726
2409 /* update ev_rt_now, do magic */ 3727 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 3728 time_update (EV_A_ waittime + sleeptime);
2411 } 3729 }
2412 3730
… …
2430 EV_INVOKE_PENDING; 3748 EV_INVOKE_PENDING;
2431 } 3749 }
2432 while (expect_true ( 3750 while (expect_true (
2433 activecnt 3751 activecnt
2434 && !loop_done 3752 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3753 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 3754 ));
2437 3755
2438 if (loop_done == EVUNLOOP_ONE) 3756 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
2440 3758
2441#if EV_FEATURE_API 3759#if EV_FEATURE_API
2442 --loop_depth; 3760 --loop_depth;
2443#endif 3761#endif
2444}
2445 3762
3763 return activecnt;
3764}
3765
2446void 3766void
2447ev_unloop (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
2448{ 3768{
2449 loop_done = how; 3769 loop_done = how;
2450} 3770}
2451 3771
2452void 3772void
2453ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
2454{ 3774{
2455 ++activecnt; 3775 ++activecnt;
2456} 3776}
2457 3777
2458void 3778void
2459ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
2460{ 3780{
2461 --activecnt; 3781 --activecnt;
2462} 3782}
2463 3783
2464void 3784void
2465ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
2466{ 3786{
2467 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
2468} 3788}
2469 3789
2470void 3790void
2471ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
2472{ 3792{
2473 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
2474} 3794}
2475 3795
2476void 3796void
2477ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
2478{ 3798{
2479 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
2480 3800
2481 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2521 w->pending = 0; 3841 w->pending = 0;
2522 } 3842 }
2523} 3843}
2524 3844
2525int 3845int
2526ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2527{ 3847{
2528 W w_ = (W)w; 3848 W w_ = (W)w;
2529 int pending = w_->pending; 3849 int pending = w_->pending;
2530 3850
2531 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
2563 w->active = 0; 3883 w->active = 0;
2564} 3884}
2565 3885
2566/*****************************************************************************/ 3886/*****************************************************************************/
2567 3887
2568void noinline 3888noinline
3889void
2569ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2570{ 3891{
2571 int fd = w->fd; 3892 int fd = w->fd;
2572 3893
2573 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2574 return; 3895 return;
… …
2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3898 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2578 3899
2579 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2580 3901
2581 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2583 wlist_add (&anfds[fd].head, (WL)w); 3904 wlist_add (&anfds[fd].head, (WL)w);
3905
3906 /* common bug, apparently */
3907 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2584 3908
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3909 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
2587 3911
2588 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2589} 3913}
2590 3914
2591void noinline 3915noinline
3916void
2592ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2593{ 3918{
2594 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2596 return; 3921 return;
2597 3922
… …
2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2606 3931
2607 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2608} 3933}
2609 3934
2610void noinline 3935noinline
3936void
2611ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2612{ 3938{
2613 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
2614 return; 3940 return;
2615 3941
2616 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
2619 3945
2620 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
2621 3947
2622 ++timercnt; 3948 ++timercnt;
2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2624 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2625 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
2626 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
2627 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
2628 3954
2629 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2630 3956
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3957 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 3958}
2633 3959
2634void noinline 3960noinline
3961void
2635ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2636{ 3963{
2637 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
2639 return; 3966 return;
2640 3967
… …
2659 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
2660 3987
2661 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
2662} 3989}
2663 3990
2664void noinline 3991noinline
3992void
2665ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2666{ 3994{
2667 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3996
3997 clear_pending (EV_A_ (W)w);
2668 3998
2669 if (ev_is_active (w)) 3999 if (ev_is_active (w))
2670 { 4000 {
2671 if (w->repeat) 4001 if (w->repeat)
2672 { 4002 {
… …
2685 4015
2686 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2687} 4017}
2688 4018
2689ev_tstamp 4019ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2691{ 4021{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693} 4023}
2694 4024
2695#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
2696void noinline 4026noinline
4027void
2697ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2698{ 4029{
2699 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2700 return; 4031 return;
2701 4032
2702 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4034 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 4035 else if (w->interval)
2705 { 4036 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4037 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 4038 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 4039 }
2710 else 4040 else
2711 ev_at (w) = w->offset; 4041 ev_at (w) = w->offset;
2712 4042
2713 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
2714 4044
2715 ++periodiccnt; 4045 ++periodiccnt;
2716 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2717 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2718 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2719 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
2720 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
2721 4051
2722 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2723 4053
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4054 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 4055}
2726 4056
2727void noinline 4057noinline
4058void
2728ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2729{ 4060{
2730 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
2732 return; 4063 return;
2733 4064
… …
2750 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2751 4082
2752 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
2753} 4084}
2754 4085
2755void noinline 4086noinline
4087void
2756ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2757{ 4089{
2758 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
2761} 4093}
… …
2765# define SA_RESTART 0 4097# define SA_RESTART 0
2766#endif 4098#endif
2767 4099
2768#if EV_SIGNAL_ENABLE 4100#if EV_SIGNAL_ENABLE
2769 4101
2770void noinline 4102noinline
4103void
2771ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2772{ 4105{
2773 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
2774 return; 4107 return;
2775 4108
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4109 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2778#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 4112 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 4114
2782 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
2783#endif 4117#endif
2784 4118
2785 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
2786 4120
2787#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 4168 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 4169 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4170 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 4171 sigaction (w->signum, &sa, 0);
2838 4172
4173 if (origflags & EVFLAG_NOSIGMASK)
4174 {
2839 sigemptyset (&sa.sa_mask); 4175 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 4176 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4177 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4178 }
2842#endif 4179#endif
2843 } 4180 }
2844 4181
2845 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
2846} 4183}
2847 4184
2848void noinline 4185noinline
4186void
2849ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2850{ 4188{
2851 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
2853 return; 4191 return;
2854 4192
… …
2885#endif 4223#endif
2886 4224
2887#if EV_CHILD_ENABLE 4225#if EV_CHILD_ENABLE
2888 4226
2889void 4227void
2890ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2891{ 4229{
2892#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4231 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 4232#endif
2895 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
… …
2902 4240
2903 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
2904} 4242}
2905 4243
2906void 4244void
2907ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2908{ 4246{
2909 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
2911 return; 4249 return;
2912 4250
… …
2929 4267
2930#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2932#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
2933 4271
2934static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4272noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2935 4273
2936#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
2937 4275
2938/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4276/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 4278
2941static void noinline 4279noinline
4280static void
2942infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
2943{ 4282{
2944 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4283 w->wd = inotify_add_watch (fs_fd, w->path,
4284 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4285 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4286 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 4287
2946 if (w->wd >= 0) 4288 if (w->wd >= 0)
2947 { 4289 {
2948 struct statfs sfs; 4290 struct statfs sfs;
2949 4291
… …
2953 4295
2954 if (!fs_2625) 4296 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 4302 || sfs.f_type == 0xEF53 /* ext2/3 */
4303 || sfs.f_type == 0x72b6 /* jffs2 */
4304 || sfs.f_type == 0x858458f6 /* ramfs */
4305 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 4312 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4313 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 4314 }
… …
2987 if (!pend || pend == path) 4335 if (!pend || pend == path)
2988 break; 4336 break;
2989 4337
2990 *pend = 0; 4338 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4339 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4340 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4341 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4342 }
2995 } 4343 }
2996 4344
2997 if (w->wd >= 0) 4345 if (w->wd >= 0)
… …
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3004} 4352}
3005 4353
3006static void noinline 4354noinline
4355static void
3007infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
3008{ 4357{
3009 int slot; 4358 int slot;
3010 int wd = w->wd; 4359 int wd = w->wd;
3011 4360
… …
3018 4367
3019 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
3020 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
3021} 4370}
3022 4371
3023static void noinline 4372noinline
4373static void
3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3025{ 4375{
3026 if (slot < 0) 4376 if (slot < 0)
3027 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4415 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4416 }
3067} 4417}
3068 4418
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void 4419inline_size ecb_cold
4420void
3102ev_check_2625 (EV_P) 4421ev_check_2625 (EV_P)
3103{ 4422{
3104 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4424 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4425 */
… …
3111} 4430}
3112 4431
3113inline_size int 4432inline_size int
3114infy_newfd (void) 4433infy_newfd (void)
3115{ 4434{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4437 if (fd >= 0)
3119 return fd; 4438 return fd;
3120#endif 4439#endif
3121 return inotify_init (); 4440 return inotify_init ();
… …
3196#else 4515#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4517#endif
3199 4518
3200void 4519void
3201ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3202{ 4521{
3203 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3207} 4526}
3208 4527
3209static void noinline 4528noinline
4529static void
3210stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3211{ 4531{
3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3213 4533
3214 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4566 }
3247} 4567}
3248 4568
3249void 4569void
3250ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3251{ 4571{
3252 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3253 return; 4573 return;
3254 4574
3255 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3276 4596
3277 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3278} 4598}
3279 4599
3280void 4600void
3281ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3282{ 4602{
3283 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3285 return; 4605 return;
3286 4606
… …
3302} 4622}
3303#endif 4623#endif
3304 4624
3305#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3306void 4626void
3307ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3308{ 4628{
3309 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3310 return; 4630 return;
3311 4631
3312 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3317 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3318 4638
3319 ++idleall; 4639 ++idleall;
3320 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3321 4641
3322 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4642 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3323 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3324 } 4644 }
3325 4645
3326 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3327} 4647}
3328 4648
3329void 4649void
3330ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3331{ 4651{
3332 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3334 return; 4654 return;
3335 4655
… …
3349} 4669}
3350#endif 4670#endif
3351 4671
3352#if EV_PREPARE_ENABLE 4672#if EV_PREPARE_ENABLE
3353void 4673void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4675{
3356 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3357 return; 4677 return;
3358 4678
3359 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3360 4680
3361 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3362 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3363 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3364 4684
3365 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3366} 4686}
3367 4687
3368void 4688void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3370{ 4690{
3371 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3373 return; 4693 return;
3374 4694
… …
3387} 4707}
3388#endif 4708#endif
3389 4709
3390#if EV_CHECK_ENABLE 4710#if EV_CHECK_ENABLE
3391void 4711void
3392ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 4713{
3394 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
3395 return; 4715 return;
3396 4716
3397 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
3398 4718
3399 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
3400 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3401 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
3402 4722
3403 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3404} 4724}
3405 4725
3406void 4726void
3407ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3408{ 4728{
3409 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
3411 return; 4731 return;
3412 4732
… …
3424 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
3425} 4745}
3426#endif 4746#endif
3427 4747
3428#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
3429void noinline 4749noinline
4750void
3430ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3431{ 4752{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 4753 ev_run (w->other, EVRUN_NOWAIT);
3433} 4754}
3434 4755
3435static void 4756static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 4757embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 4758{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4759 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 4760
3440 if (ev_cb (w)) 4761 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4762 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 4763 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 4764 ev_run (w->other, EVRUN_NOWAIT);
3444} 4765}
3445 4766
3446static void 4767static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4768embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 4769{
… …
3452 EV_P = w->other; 4773 EV_P = w->other;
3453 4774
3454 while (fdchangecnt) 4775 while (fdchangecnt)
3455 { 4776 {
3456 fd_reify (EV_A); 4777 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4778 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 4779 }
3459 } 4780 }
3460} 4781}
3461 4782
3462static void 4783static void
… …
3468 4789
3469 { 4790 {
3470 EV_P = w->other; 4791 EV_P = w->other;
3471 4792
3472 ev_loop_fork (EV_A); 4793 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4794 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 4795 }
3475 4796
3476 ev_embed_start (EV_A_ w); 4797 ev_embed_start (EV_A_ w);
3477} 4798}
3478 4799
… …
3483 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
3484} 4805}
3485#endif 4806#endif
3486 4807
3487void 4808void
3488ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3489{ 4810{
3490 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
3491 return; 4812 return;
3492 4813
3493 { 4814 {
… …
3514 4835
3515 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3516} 4837}
3517 4838
3518void 4839void
3519ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3520{ 4841{
3521 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
3523 return; 4844 return;
3524 4845
… …
3534} 4855}
3535#endif 4856#endif
3536 4857
3537#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
3538void 4859void
3539ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 4861{
3541 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
3542 return; 4863 return;
3543 4864
3544 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3545 4866
3546 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
3547 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3548 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
3549 4870
3550 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
3551} 4872}
3552 4873
3553void 4874void
3554ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3555{ 4876{
3556 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
3558 return; 4879 return;
3559 4880
… …
3570 4891
3571 EV_FREQUENT_CHECK; 4892 EV_FREQUENT_CHECK;
3572} 4893}
3573#endif 4894#endif
3574 4895
3575#if EV_ASYNC_ENABLE 4896#if EV_CLEANUP_ENABLE
3576void 4897void
3577ev_async_start (EV_P_ ev_async *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3578{ 4899{
3579 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
3580 return; 4901 return;
3581 4902
3582 w->sent = 0;
3583
3584 evpipe_init (EV_A);
3585
3586 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
3587 4904
3588 ev_start (EV_A_ (W)w, ++asynccnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
3589 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3590 asyncs [asynccnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
3591 4908
4909 /* cleanup watchers should never keep a refcount on the loop */
4910 ev_unref (EV_A);
3592 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
3593} 4912}
3594 4913
3595void 4914void
3596ev_async_stop (EV_P_ ev_async *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3597{ 4916{
3598 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
3600 return; 4919 return;
3601 4920
3602 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
4922 ev_ref (EV_A);
4923
4924 {
4925 int active = ev_active (w);
4926
4927 cleanups [active - 1] = cleanups [--cleanupcnt];
4928 ev_active (cleanups [active - 1]) = active;
4929 }
4930
4931 ev_stop (EV_A_ (W)w);
4932
4933 EV_FREQUENT_CHECK;
4934}
4935#endif
4936
4937#if EV_ASYNC_ENABLE
4938void
4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4940{
4941 if (expect_false (ev_is_active (w)))
4942 return;
4943
4944 w->sent = 0;
4945
4946 evpipe_init (EV_A);
4947
4948 EV_FREQUENT_CHECK;
4949
4950 ev_start (EV_A_ (W)w, ++asynccnt);
4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4952 asyncs [asynccnt - 1] = w;
4953
4954 EV_FREQUENT_CHECK;
4955}
4956
4957void
4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4959{
4960 clear_pending (EV_A_ (W)w);
4961 if (expect_false (!ev_is_active (w)))
4962 return;
4963
4964 EV_FREQUENT_CHECK;
3603 4965
3604 { 4966 {
3605 int active = ev_active (w); 4967 int active = ev_active (w);
3606 4968
3607 asyncs [active - 1] = asyncs [--asynccnt]; 4969 asyncs [active - 1] = asyncs [--asynccnt];
… …
3612 4974
3613 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
3614} 4976}
3615 4977
3616void 4978void
3617ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3618{ 4980{
3619 w->sent = 1; 4981 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
3621} 4983}
3622#endif 4984#endif
… …
3659 5021
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5022 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 5023}
3662 5024
3663void 5025void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5026ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3665{ 5027{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5028 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3667
3668 if (expect_false (!once))
3669 {
3670 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3671 return;
3672 }
3673 5029
3674 once->cb = cb; 5030 once->cb = cb;
3675 once->arg = arg; 5031 once->arg = arg;
3676 5032
3677 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
3690} 5046}
3691 5047
3692/*****************************************************************************/ 5048/*****************************************************************************/
3693 5049
3694#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
5051ecb_cold
3695void 5052void
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5053ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3697{ 5054{
3698 int i, j; 5055 int i, j;
3699 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
3700 5057
3701 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5101 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 5102#endif
3746 5103
3747#if EV_IDLE_ENABLE 5104#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 5105 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 5106 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 5107 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 5108 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 5109#endif
3753 5110
3754#if EV_FORK_ENABLE 5111#if EV_FORK_ENABLE
… …
3807 5164
3808#if EV_MULTIPLICITY 5165#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 5166 #include "ev_wrap.h"
3810#endif 5167#endif
3811 5168
3812#ifdef __cplusplus
3813}
3814#endif
3815

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