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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 1.489 by root, Sat Dec 29 14:23:20 2018 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) 2007-2018 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
… …
340 365
341#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 368#endif
344 369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
384#endif
385
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* 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. */ 387/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 389# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
353# else 394# else
… …
356# endif 397# endif
357#endif 398#endif
358 399
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 401
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 402#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
370#endif 405#endif
371 406
… …
378# undef EV_USE_INOTIFY 413# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
380#endif 415#endif
381 416
382#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
419# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 420# include <sys/select.h>
385# endif 421# endif
386#endif 422#endif
387 423
388#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 425# include <sys/statfs.h>
391# include <sys/inotify.h> 426# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
396# endif 431# endif
397#endif
398
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif 432#endif
402 433
403#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
405# include <stdint.h> 436# include <stdint.h>
… …
411# define EFD_CLOEXEC O_CLOEXEC 442# define EFD_CLOEXEC O_CLOEXEC
412# else 443# else
413# define EFD_CLOEXEC 02000000 444# define EFD_CLOEXEC 02000000
414# endif 445# endif
415# endif 446# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 447EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 448#endif
424 449
425#if EV_USE_SIGNALFD 450#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 451/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 452# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 458# define SFD_CLOEXEC O_CLOEXEC
434# else 459# else
435# define SFD_CLOEXEC 02000000 460# define SFD_CLOEXEC 02000000
436# endif 461# endif
437# endif 462# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 463EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 464
443struct signalfd_siginfo 465struct signalfd_siginfo
444{ 466{
445 uint32_t ssi_signo; 467 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 468 char pad[128 - sizeof (uint32_t)];
447}; 469};
448# ifdef __cplusplus
449}
450# endif
451#endif 470#endif
452 471
453/**/ 472/**/
454 473
455#if EV_VERIFY >= 3 474#if EV_VERIFY >= 3
… …
457#else 476#else
458# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
459#endif 478#endif
460 479
461/* 480/*
462 * This is used to avoid floating point rounding problems. 481 * 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. 482 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 483 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 486
471#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#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) */ 488#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
473 489
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 490#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) 491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476 492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614#define ECB_CPP14 (__cplusplus >= 201402L)
615#define ECB_CPP17 (__cplusplus >= 201703L)
616
617#if ECB_CPP
618 #define ECB_C 0
619 #define ECB_STDC_VERSION 0
620#else
621 #define ECB_C 1
622 #define ECB_STDC_VERSION __STDC_VERSION__
623#endif
624
625#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
626#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
627#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
628
629#if ECB_CPP
630 #define ECB_EXTERN_C extern "C"
631 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
632 #define ECB_EXTERN_C_END }
633#else
634 #define ECB_EXTERN_C extern
635 #define ECB_EXTERN_C_BEG
636 #define ECB_EXTERN_C_END
637#endif
638
639/*****************************************************************************/
640
641/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
642/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
643
644#if ECB_NO_THREADS
645 #define ECB_NO_SMP 1
646#endif
647
648#if ECB_NO_SMP
649 #define ECB_MEMORY_FENCE do { } while (0)
650#endif
651
652/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
653#if __xlC__ && ECB_CPP
654 #include <builtins.h>
655#endif
656
657#if 1400 <= _MSC_VER
658 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
659#endif
660
661#ifndef ECB_MEMORY_FENCE
662 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
663 #if __i386 || __i386__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
667 #elif ECB_GCC_AMD64
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
673 #elif defined __ARM_ARCH_2__ \
674 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
675 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
676 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
677 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
678 || defined __ARM_ARCH_5TEJ__
679 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
687 #elif __aarch64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
693 #elif defined __s390__ || defined __s390x__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
695 #elif defined __mips__
696 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
697 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
699 #elif defined __alpha__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
701 #elif defined __hppa__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
704 #elif defined __ia64__
705 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
706 #elif defined __m68k__
707 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
708 #elif defined __m88k__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
710 #elif defined __sh__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
712 #endif
713 #endif
714#endif
715
716#ifndef ECB_MEMORY_FENCE
717 #if ECB_GCC_VERSION(4,7)
718 /* see comment below (stdatomic.h) about the C11 memory model. */
719 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
720 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
721 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
722
723 #elif ECB_CLANG_EXTENSION(c_atomic)
724 /* see comment below (stdatomic.h) about the C11 memory model. */
725 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
726 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
727 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
728
729 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
730 #define ECB_MEMORY_FENCE __sync_synchronize ()
731 #elif _MSC_VER >= 1500 /* VC++ 2008 */
732 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
737 #elif _MSC_VER >= 1400 /* VC++ 2005 */
738 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
739 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
740 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
741 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
742 #elif defined _WIN32
743 #include <WinNT.h>
744 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
745 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
746 #include <mbarrier.h>
747 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
749 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
750 #elif __xlC__
751 #define ECB_MEMORY_FENCE __sync ()
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
757 /* we assume that these memory fences work on all variables/all memory accesses, */
758 /* not just C11 atomics and atomic accesses */
759 #include <stdatomic.h>
760 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
761 /* any fence other than seq_cst, which isn't very efficient for us. */
762 /* Why that is, we don't know - either the C11 memory model is quite useless */
763 /* for most usages, or gcc and clang have a bug */
764 /* I *currently* lean towards the latter, and inefficiently implement */
765 /* all three of ecb's fences as a seq_cst fence */
766 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
767 /* for all __atomic_thread_fence's except seq_cst */
768 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
769 #endif
770#endif
771
772#ifndef ECB_MEMORY_FENCE
773 #if !ECB_AVOID_PTHREADS
774 /*
775 * if you get undefined symbol references to pthread_mutex_lock,
776 * or failure to find pthread.h, then you should implement
777 * the ECB_MEMORY_FENCE operations for your cpu/compiler
778 * OR provide pthread.h and link against the posix thread library
779 * of your system.
780 */
781 #include <pthread.h>
782 #define ECB_NEEDS_PTHREADS 1
783 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
784
785 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
786 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
787 #endif
788#endif
789
790#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
791 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
792#endif
793
794#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
795 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
796#endif
797
798/*****************************************************************************/
799
800#if ECB_CPP
801 #define ecb_inline static inline
802#elif ECB_GCC_VERSION(2,5)
803 #define ecb_inline static __inline__
804#elif ECB_C99
805 #define ecb_inline static inline
806#else
807 #define ecb_inline static
808#endif
809
810#if ECB_GCC_VERSION(3,3)
811 #define ecb_restrict __restrict__
812#elif ECB_C99
813 #define ecb_restrict restrict
814#else
815 #define ecb_restrict
816#endif
817
818typedef int ecb_bool;
819
820#define ECB_CONCAT_(a, b) a ## b
821#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
822#define ECB_STRINGIFY_(a) # a
823#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
824#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
825
826#define ecb_function_ ecb_inline
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
829 #define ecb_attribute(attrlist) __attribute__ (attrlist)
830#else
831 #define ecb_attribute(attrlist)
832#endif
833
834#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
835 #define ecb_is_constant(expr) __builtin_constant_p (expr)
836#else
837 /* possible C11 impl for integral types
838 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
839 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
840
841 #define ecb_is_constant(expr) 0
842#endif
843
844#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
478# define expect(expr,value) __builtin_expect ((expr),(value)) 845 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
479# define noinline __attribute__ ((noinline))
480#else 846#else
481# define expect(expr,value) (expr) 847 #define ecb_expect(expr,value) (expr)
482# define noinline
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484# define inline
485# endif 848#endif
486#endif
487 849
850#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
851 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
852#else
853 #define ecb_prefetch(addr,rw,locality)
854#endif
855
856/* no emulation for ecb_decltype */
857#if ECB_CPP11
858 // older implementations might have problems with decltype(x)::type, work around it
859 template<class T> struct ecb_decltype_t { typedef T type; };
860 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
861#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
862 #define ecb_decltype(x) __typeof__ (x)
863#endif
864
865#if _MSC_VER >= 1300
866 #define ecb_deprecated __declspec (deprecated)
867#else
868 #define ecb_deprecated ecb_attribute ((__deprecated__))
869#endif
870
871#if _MSC_VER >= 1500
872 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
873#elif ECB_GCC_VERSION(4,5)
874 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
875#else
876 #define ecb_deprecated_message(msg) ecb_deprecated
877#endif
878
879#if _MSC_VER >= 1400
880 #define ecb_noinline __declspec (noinline)
881#else
882 #define ecb_noinline ecb_attribute ((__noinline__))
883#endif
884
885#define ecb_unused ecb_attribute ((__unused__))
886#define ecb_const ecb_attribute ((__const__))
887#define ecb_pure ecb_attribute ((__pure__))
888
889#if ECB_C11 || __IBMC_NORETURN
890 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
891 #define ecb_noreturn _Noreturn
892#elif ECB_CPP11
893 #define ecb_noreturn [[noreturn]]
894#elif _MSC_VER >= 1200
895 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
896 #define ecb_noreturn __declspec (noreturn)
897#else
898 #define ecb_noreturn ecb_attribute ((__noreturn__))
899#endif
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_artificial ecb_attribute ((__artificial__))
903 #define ecb_hot ecb_attribute ((__hot__))
904 #define ecb_cold ecb_attribute ((__cold__))
905#else
906 #define ecb_artificial
907 #define ecb_hot
908 #define ecb_cold
909#endif
910
911/* put around conditional expressions if you are very sure that the */
912/* expression is mostly true or mostly false. note that these return */
913/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 914#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 915#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
916/* for compatibility to the rest of the world */
917#define ecb_likely(expr) ecb_expect_true (expr)
918#define ecb_unlikely(expr) ecb_expect_false (expr)
919
920/* count trailing zero bits and count # of one bits */
921#if ECB_GCC_VERSION(3,4) \
922 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
923 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
924 && ECB_CLANG_BUILTIN(__builtin_popcount))
925 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
926 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
927 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
928 #define ecb_ctz32(x) __builtin_ctz (x)
929 #define ecb_ctz64(x) __builtin_ctzll (x)
930 #define ecb_popcount32(x) __builtin_popcount (x)
931 /* no popcountll */
932#else
933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
934 ecb_function_ ecb_const int
935 ecb_ctz32 (uint32_t x)
936 {
937#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
938 unsigned long r;
939 _BitScanForward (&r, x);
940 return (int)r;
941#else
942 int r = 0;
943
944 x &= ~x + 1; /* this isolates the lowest bit */
945
946#if ECB_branchless_on_i386
947 r += !!(x & 0xaaaaaaaa) << 0;
948 r += !!(x & 0xcccccccc) << 1;
949 r += !!(x & 0xf0f0f0f0) << 2;
950 r += !!(x & 0xff00ff00) << 3;
951 r += !!(x & 0xffff0000) << 4;
952#else
953 if (x & 0xaaaaaaaa) r += 1;
954 if (x & 0xcccccccc) r += 2;
955 if (x & 0xf0f0f0f0) r += 4;
956 if (x & 0xff00ff00) r += 8;
957 if (x & 0xffff0000) r += 16;
958#endif
959
960 return r;
961#endif
962 }
963
964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
965 ecb_function_ ecb_const int
966 ecb_ctz64 (uint64_t x)
967 {
968#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
969 unsigned long r;
970 _BitScanForward64 (&r, x);
971 return (int)r;
972#else
973 int shift = x & 0xffffffff ? 0 : 32;
974 return ecb_ctz32 (x >> shift) + shift;
975#endif
976 }
977
978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
979 ecb_function_ ecb_const int
980 ecb_popcount32 (uint32_t x)
981 {
982 x -= (x >> 1) & 0x55555555;
983 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
984 x = ((x >> 4) + x) & 0x0f0f0f0f;
985 x *= 0x01010101;
986
987 return x >> 24;
988 }
989
990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
992 {
993#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanReverse (&r, x);
996 return (int)r;
997#else
998 int r = 0;
999
1000 if (x >> 16) { x >>= 16; r += 16; }
1001 if (x >> 8) { x >>= 8; r += 8; }
1002 if (x >> 4) { x >>= 4; r += 4; }
1003 if (x >> 2) { x >>= 2; r += 2; }
1004 if (x >> 1) { r += 1; }
1005
1006 return r;
1007#endif
1008 }
1009
1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1012 {
1013#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1014 unsigned long r;
1015 _BitScanReverse64 (&r, x);
1016 return (int)r;
1017#else
1018 int r = 0;
1019
1020 if (x >> 32) { x >>= 32; r += 32; }
1021
1022 return r + ecb_ld32 (x);
1023#endif
1024 }
1025#endif
1026
1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1028ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1029ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1030ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1031
1032ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1033ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1034{
1035 return ( (x * 0x0802U & 0x22110U)
1036 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1037}
1038
1039ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1040ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1041{
1042 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1043 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1044 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1045 x = ( x >> 8 ) | ( x << 8);
1046
1047 return x;
1048}
1049
1050ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1051ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1052{
1053 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1054 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1055 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1056 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1057 x = ( x >> 16 ) | ( x << 16);
1058
1059 return x;
1060}
1061
1062/* popcount64 is only available on 64 bit cpus as gcc builtin */
1063/* so for this version we are lazy */
1064ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1065ecb_function_ ecb_const int
1066ecb_popcount64 (uint64_t x)
1067{
1068 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1069}
1070
1071ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1072ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1073ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1074ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1075ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1076ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1077ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1078ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1079
1080ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1081ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1082ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1083ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1084ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1085ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1086ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1087ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1088
1089#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1090 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1091 #define ecb_bswap16(x) __builtin_bswap16 (x)
1092 #else
1093 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1094 #endif
1095 #define ecb_bswap32(x) __builtin_bswap32 (x)
1096 #define ecb_bswap64(x) __builtin_bswap64 (x)
1097#elif _MSC_VER
1098 #include <stdlib.h>
1099 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1100 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1101 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1102#else
1103 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1104 ecb_function_ ecb_const uint16_t
1105 ecb_bswap16 (uint16_t x)
1106 {
1107 return ecb_rotl16 (x, 8);
1108 }
1109
1110 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1111 ecb_function_ ecb_const uint32_t
1112 ecb_bswap32 (uint32_t x)
1113 {
1114 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1115 }
1116
1117 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1118 ecb_function_ ecb_const uint64_t
1119 ecb_bswap64 (uint64_t x)
1120 {
1121 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1122 }
1123#endif
1124
1125#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1126 #define ecb_unreachable() __builtin_unreachable ()
1127#else
1128 /* this seems to work fine, but gcc always emits a warning for it :/ */
1129 ecb_inline ecb_noreturn void ecb_unreachable (void);
1130 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1131#endif
1132
1133/* try to tell the compiler that some condition is definitely true */
1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1135
1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1137ecb_inline ecb_const uint32_t
1138ecb_byteorder_helper (void)
1139{
1140 /* the union code still generates code under pressure in gcc, */
1141 /* but less than using pointers, and always seems to */
1142 /* successfully return a constant. */
1143 /* the reason why we have this horrible preprocessor mess */
1144 /* is to avoid it in all cases, at least on common architectures */
1145 /* or when using a recent enough gcc version (>= 4.6) */
1146#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1147 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1148 #define ECB_LITTLE_ENDIAN 1
1149 return 0x44332211;
1150#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1151 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1152 #define ECB_BIG_ENDIAN 1
1153 return 0x11223344;
1154#else
1155 union
1156 {
1157 uint8_t c[4];
1158 uint32_t u;
1159 } u = { 0x11, 0x22, 0x33, 0x44 };
1160 return u.u;
1161#endif
1162}
1163
1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1165ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1167ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1168
1169#if ECB_GCC_VERSION(3,0) || ECB_C99
1170 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1171#else
1172 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1173#endif
1174
1175#if ECB_CPP
1176 template<typename T>
1177 static inline T ecb_div_rd (T val, T div)
1178 {
1179 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1180 }
1181 template<typename T>
1182 static inline T ecb_div_ru (T val, T div)
1183 {
1184 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1185 }
1186#else
1187 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1188 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1189#endif
1190
1191#if ecb_cplusplus_does_not_suck
1192 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1193 template<typename T, int N>
1194 static inline int ecb_array_length (const T (&arr)[N])
1195 {
1196 return N;
1197 }
1198#else
1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1200#endif
1201
1202ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1203ecb_function_ ecb_const uint32_t
1204ecb_binary16_to_binary32 (uint32_t x)
1205{
1206 unsigned int s = (x & 0x8000) << (31 - 15);
1207 int e = (x >> 10) & 0x001f;
1208 unsigned int m = x & 0x03ff;
1209
1210 if (ecb_expect_false (e == 31))
1211 /* infinity or NaN */
1212 e = 255 - (127 - 15);
1213 else if (ecb_expect_false (!e))
1214 {
1215 if (ecb_expect_true (!m))
1216 /* zero, handled by code below by forcing e to 0 */
1217 e = 0 - (127 - 15);
1218 else
1219 {
1220 /* subnormal, renormalise */
1221 unsigned int s = 10 - ecb_ld32 (m);
1222
1223 m = (m << s) & 0x3ff; /* mask implicit bit */
1224 e -= s - 1;
1225 }
1226 }
1227
1228 /* e and m now are normalised, or zero, (or inf or nan) */
1229 e += 127 - 15;
1230
1231 return s | (e << 23) | (m << (23 - 10));
1232}
1233
1234ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1235ecb_function_ ecb_const uint16_t
1236ecb_binary32_to_binary16 (uint32_t x)
1237{
1238 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1239 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1240 unsigned int m = x & 0x007fffff;
1241
1242 x &= 0x7fffffff;
1243
1244 /* if it's within range of binary16 normals, use fast path */
1245 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1246 {
1247 /* mantissa round-to-even */
1248 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1249
1250 /* handle overflow */
1251 if (ecb_expect_false (m >= 0x00800000))
1252 {
1253 m >>= 1;
1254 e += 1;
1255 }
1256
1257 return s | (e << 10) | (m >> (23 - 10));
1258 }
1259
1260 /* handle large numbers and infinity */
1261 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1262 return s | 0x7c00;
1263
1264 /* handle zero, subnormals and small numbers */
1265 if (ecb_expect_true (x < 0x38800000))
1266 {
1267 /* zero */
1268 if (ecb_expect_true (!x))
1269 return s;
1270
1271 /* handle subnormals */
1272
1273 /* too small, will be zero */
1274 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1275 return s;
1276
1277 m |= 0x00800000; /* make implicit bit explicit */
1278
1279 /* very tricky - we need to round to the nearest e (+10) bit value */
1280 {
1281 unsigned int bits = 14 - e;
1282 unsigned int half = (1 << (bits - 1)) - 1;
1283 unsigned int even = (m >> bits) & 1;
1284
1285 /* if this overflows, we will end up with a normalised number */
1286 m = (m + half + even) >> bits;
1287 }
1288
1289 return s | m;
1290 }
1291
1292 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1293 m >>= 13;
1294
1295 return s | 0x7c00 | m | !m;
1296}
1297
1298/*******************************************************************************/
1299/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1300
1301/* basically, everything uses "ieee pure-endian" floating point numbers */
1302/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1303#if 0 \
1304 || __i386 || __i386__ \
1305 || ECB_GCC_AMD64 \
1306 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1307 || defined __s390__ || defined __s390x__ \
1308 || defined __mips__ \
1309 || defined __alpha__ \
1310 || defined __hppa__ \
1311 || defined __ia64__ \
1312 || defined __m68k__ \
1313 || defined __m88k__ \
1314 || defined __sh__ \
1315 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1316 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1317 || defined __aarch64__
1318 #define ECB_STDFP 1
1319 #include <string.h> /* for memcpy */
1320#else
1321 #define ECB_STDFP 0
1322#endif
1323
1324#ifndef ECB_NO_LIBM
1325
1326 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1327
1328 /* only the oldest of old doesn't have this one. solaris. */
1329 #ifdef INFINITY
1330 #define ECB_INFINITY INFINITY
1331 #else
1332 #define ECB_INFINITY HUGE_VAL
1333 #endif
1334
1335 #ifdef NAN
1336 #define ECB_NAN NAN
1337 #else
1338 #define ECB_NAN ECB_INFINITY
1339 #endif
1340
1341 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1342 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1343 #define ecb_frexpf(x,e) frexpf ((x), (e))
1344 #else
1345 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1346 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1347 #endif
1348
1349 /* convert a float to ieee single/binary32 */
1350 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1351 ecb_function_ ecb_const uint32_t
1352 ecb_float_to_binary32 (float x)
1353 {
1354 uint32_t r;
1355
1356 #if ECB_STDFP
1357 memcpy (&r, &x, 4);
1358 #else
1359 /* slow emulation, works for anything but -0 */
1360 uint32_t m;
1361 int e;
1362
1363 if (x == 0e0f ) return 0x00000000U;
1364 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1365 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1366 if (x != x ) return 0x7fbfffffU;
1367
1368 m = ecb_frexpf (x, &e) * 0x1000000U;
1369
1370 r = m & 0x80000000U;
1371
1372 if (r)
1373 m = -m;
1374
1375 if (e <= -126)
1376 {
1377 m &= 0xffffffU;
1378 m >>= (-125 - e);
1379 e = -126;
1380 }
1381
1382 r |= (e + 126) << 23;
1383 r |= m & 0x7fffffU;
1384 #endif
1385
1386 return r;
1387 }
1388
1389 /* converts an ieee single/binary32 to a float */
1390 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1391 ecb_function_ ecb_const float
1392 ecb_binary32_to_float (uint32_t x)
1393 {
1394 float r;
1395
1396 #if ECB_STDFP
1397 memcpy (&r, &x, 4);
1398 #else
1399 /* emulation, only works for normals and subnormals and +0 */
1400 int neg = x >> 31;
1401 int e = (x >> 23) & 0xffU;
1402
1403 x &= 0x7fffffU;
1404
1405 if (e)
1406 x |= 0x800000U;
1407 else
1408 e = 1;
1409
1410 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1411 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1412
1413 r = neg ? -r : r;
1414 #endif
1415
1416 return r;
1417 }
1418
1419 /* convert a double to ieee double/binary64 */
1420 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1421 ecb_function_ ecb_const uint64_t
1422 ecb_double_to_binary64 (double x)
1423 {
1424 uint64_t r;
1425
1426 #if ECB_STDFP
1427 memcpy (&r, &x, 8);
1428 #else
1429 /* slow emulation, works for anything but -0 */
1430 uint64_t m;
1431 int e;
1432
1433 if (x == 0e0 ) return 0x0000000000000000U;
1434 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1435 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1436 if (x != x ) return 0X7ff7ffffffffffffU;
1437
1438 m = frexp (x, &e) * 0x20000000000000U;
1439
1440 r = m & 0x8000000000000000;;
1441
1442 if (r)
1443 m = -m;
1444
1445 if (e <= -1022)
1446 {
1447 m &= 0x1fffffffffffffU;
1448 m >>= (-1021 - e);
1449 e = -1022;
1450 }
1451
1452 r |= ((uint64_t)(e + 1022)) << 52;
1453 r |= m & 0xfffffffffffffU;
1454 #endif
1455
1456 return r;
1457 }
1458
1459 /* converts an ieee double/binary64 to a double */
1460 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1461 ecb_function_ ecb_const double
1462 ecb_binary64_to_double (uint64_t x)
1463 {
1464 double r;
1465
1466 #if ECB_STDFP
1467 memcpy (&r, &x, 8);
1468 #else
1469 /* emulation, only works for normals and subnormals and +0 */
1470 int neg = x >> 63;
1471 int e = (x >> 52) & 0x7ffU;
1472
1473 x &= 0xfffffffffffffU;
1474
1475 if (e)
1476 x |= 0x10000000000000U;
1477 else
1478 e = 1;
1479
1480 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1481 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1482
1483 r = neg ? -r : r;
1484 #endif
1485
1486 return r;
1487 }
1488
1489 /* convert a float to ieee half/binary16 */
1490 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1491 ecb_function_ ecb_const uint16_t
1492 ecb_float_to_binary16 (float x)
1493 {
1494 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1495 }
1496
1497 /* convert an ieee half/binary16 to float */
1498 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1499 ecb_function_ ecb_const float
1500 ecb_binary16_to_float (uint16_t x)
1501 {
1502 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1503 }
1504
1505#endif
1506
1507#endif
1508
1509/* ECB.H END */
1510
1511#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1512/* if your architecture doesn't need memory fences, e.g. because it is
1513 * single-cpu/core, or if you use libev in a project that doesn't use libev
1514 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1515 * libev, in which cases the memory fences become nops.
1516 * alternatively, you can remove this #error and link against libpthread,
1517 * which will then provide the memory fences.
1518 */
1519# error "memory fences not defined for your architecture, please report"
1520#endif
1521
1522#ifndef ECB_MEMORY_FENCE
1523# define ECB_MEMORY_FENCE do { } while (0)
1524# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1525# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1526#endif
1527
1528#define expect_false(cond) ecb_expect_false (cond)
1529#define expect_true(cond) ecb_expect_true (cond)
1530#define noinline ecb_noinline
1531
490#define inline_size static inline 1532#define inline_size ecb_inline
491 1533
492#if EV_FEATURE_CODE 1534#if EV_FEATURE_CODE
493# define inline_speed static inline 1535# define inline_speed ecb_inline
494#else 1536#else
495# define inline_speed static noinline 1537# define inline_speed noinline static
496#endif 1538#endif
497 1539
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1541
500#if EV_MINPRI == EV_MAXPRI 1542#if EV_MINPRI == EV_MAXPRI
… …
537# include "ev_win32.c" 1579# include "ev_win32.c"
538#endif 1580#endif
539 1581
540/*****************************************************************************/ 1582/*****************************************************************************/
541 1583
1584/* define a suitable floor function (only used by periodics atm) */
1585
1586#if EV_USE_FLOOR
1587# include <math.h>
1588# define ev_floor(v) floor (v)
1589#else
1590
1591#include <float.h>
1592
1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1595static ev_tstamp
1596ev_floor (ev_tstamp v)
1597{
1598 /* the choice of shift factor is not terribly important */
1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1601#else
1602 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1603#endif
1604
1605 /* argument too large for an unsigned long? */
1606 if (expect_false (v >= shift))
1607 {
1608 ev_tstamp f;
1609
1610 if (v == v - 1.)
1611 return v; /* very large number */
1612
1613 f = shift * ev_floor (v * (1. / shift));
1614 return f + ev_floor (v - f);
1615 }
1616
1617 /* special treatment for negative args? */
1618 if (expect_false (v < 0.))
1619 {
1620 ev_tstamp f = -ev_floor (-v);
1621
1622 return f - (f == v ? 0 : 1);
1623 }
1624
1625 /* fits into an unsigned long */
1626 return (unsigned long)v;
1627}
1628
1629#endif
1630
1631/*****************************************************************************/
1632
1633#ifdef __linux
1634# include <sys/utsname.h>
1635#endif
1636
1637noinline ecb_cold
1638static unsigned int
1639ev_linux_version (void)
1640{
1641#ifdef __linux
1642 unsigned int v = 0;
1643 struct utsname buf;
1644 int i;
1645 char *p = buf.release;
1646
1647 if (uname (&buf))
1648 return 0;
1649
1650 for (i = 3+1; --i; )
1651 {
1652 unsigned int c = 0;
1653
1654 for (;;)
1655 {
1656 if (*p >= '0' && *p <= '9')
1657 c = c * 10 + *p++ - '0';
1658 else
1659 {
1660 p += *p == '.';
1661 break;
1662 }
1663 }
1664
1665 v = (v << 8) | c;
1666 }
1667
1668 return v;
1669#else
1670 return 0;
1671#endif
1672}
1673
1674/*****************************************************************************/
1675
542#if EV_AVOID_STDIO 1676#if EV_AVOID_STDIO
543static void noinline 1677noinline ecb_cold
1678static void
544ev_printerr (const char *msg) 1679ev_printerr (const char *msg)
545{ 1680{
546 write (STDERR_FILENO, msg, strlen (msg)); 1681 write (STDERR_FILENO, msg, strlen (msg));
547} 1682}
548#endif 1683#endif
549 1684
550static void (*syserr_cb)(const char *msg); 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1686
1687ecb_cold
552void 1688void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1689ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1690{
555 syserr_cb = cb; 1691 syserr_cb = cb;
556} 1692}
557 1693
558static void noinline 1694noinline ecb_cold
1695static void
559ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
560{ 1697{
561 if (!msg) 1698 if (!msg)
562 msg = "(libev) system error"; 1699 msg = "(libev) system error";
563 1700
564 if (syserr_cb) 1701 if (syserr_cb)
565 syserr_cb (msg); 1702 syserr_cb (msg);
566 else 1703 else
567 { 1704 {
568#if EV_AVOID_STDIO 1705#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1706 ev_printerr (msg);
572 ev_printerr (": "); 1707 ev_printerr (": ");
573 ev_printerr (err); 1708 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1709 ev_printerr ("\n");
575#else 1710#else
576 perror (msg); 1711 perror (msg);
577#endif 1712#endif
578 abort (); 1713 abort ();
579 } 1714 }
580} 1715}
581 1716
582static void * 1717static void *
583ev_realloc_emul (void *ptr, long size) 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 1719{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1720 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1721 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1722 * the single unix specification, so work around them here.
1723 * recently, also (at least) fedora and debian started breaking it,
1724 * despite documenting it otherwise.
591 */ 1725 */
592 1726
593 if (size) 1727 if (size)
594 return realloc (ptr, size); 1728 return realloc (ptr, size);
595 1729
596 free (ptr); 1730 free (ptr);
597 return 0; 1731 return 0;
598#endif
599} 1732}
600 1733
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 1735
1736ecb_cold
603void 1737void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1738ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 1739{
606 alloc = cb; 1740 alloc = cb;
607} 1741}
608 1742
609inline_speed void * 1743inline_speed void *
… …
612 ptr = alloc (ptr, size); 1746 ptr = alloc (ptr, size);
613 1747
614 if (!ptr && size) 1748 if (!ptr && size)
615 { 1749 {
616#if EV_AVOID_STDIO 1750#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1752#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1754#endif
621 abort (); 1755 abort ();
622 } 1756 }
623 1757
624 return ptr; 1758 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 1776 unsigned char unused;
643#if EV_USE_EPOLL 1777#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1778 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1779#endif
646#if EV_SELECT_IS_WINSOCKET 1780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1781 SOCKET handle;
1782#endif
1783#if EV_USE_IOCP
1784 OVERLAPPED or, ow;
648#endif 1785#endif
649} ANFD; 1786} ANFD;
650 1787
651/* stores the pending event set for a given watcher */ 1788/* stores the pending event set for a given watcher */
652typedef struct 1789typedef struct
… …
694 #undef VAR 1831 #undef VAR
695 }; 1832 };
696 #include "ev_wrap.h" 1833 #include "ev_wrap.h"
697 1834
698 static struct ev_loop default_loop_struct; 1835 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 1836 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 1837
701#else 1838#else
702 1839
703 ev_tstamp ev_rt_now; 1840 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; 1841 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 1842 #include "ev_vars.h"
706 #undef VAR 1843 #undef VAR
707 1844
708 static int ev_default_loop_ptr; 1845 static int ev_default_loop_ptr;
… …
717# define EV_RELEASE_CB (void)0 1854# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 1855# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 1857#endif
721 1858
722#define EVUNLOOP_RECURSE 0x80 1859#define EVBREAK_RECURSE 0x80
723 1860
724/*****************************************************************************/ 1861/*****************************************************************************/
725 1862
726#ifndef EV_HAVE_EV_TIME 1863#ifndef EV_HAVE_EV_TIME
727ev_tstamp 1864ev_tstamp
728ev_time (void) 1865ev_time (void) EV_NOEXCEPT
729{ 1866{
730#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
732 { 1869 {
733 struct timespec ts; 1870 struct timespec ts;
… …
757 return ev_time (); 1894 return ev_time ();
758} 1895}
759 1896
760#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
761ev_tstamp 1898ev_tstamp
762ev_now (EV_P) 1899ev_now (EV_P) EV_NOEXCEPT
763{ 1900{
764 return ev_rt_now; 1901 return ev_rt_now;
765} 1902}
766#endif 1903#endif
767 1904
768void 1905void
769ev_sleep (ev_tstamp delay) 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 1907{
771 if (delay > 0.) 1908 if (delay > 0.)
772 { 1909 {
773#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
774 struct timespec ts; 1911 struct timespec ts;
775 1912
776 EV_TS_SET (ts, delay); 1913 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1915#elif defined _WIN32
1916 /* maybe this should round up, as ms is very low resolution */
1917 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
780#else 1919#else
781 struct timeval tv; 1920 struct timeval tv;
782 1921
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1922 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
802 1941
803 do 1942 do
804 ncur <<= 1; 1943 ncur <<= 1;
805 while (cnt > ncur); 1944 while (cnt > ncur);
806 1945
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1946 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1947 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 1948 {
810 ncur *= elem; 1949 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1950 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 1951 ncur = ncur - sizeof (void *) * 4;
… …
814 } 1953 }
815 1954
816 return ncur; 1955 return ncur;
817} 1956}
818 1957
819static noinline void * 1958noinline ecb_cold
1959static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
821{ 1961{
822 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
824} 1964}
… …
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
828 1968
829#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
831 { \ 1971 { \
832 int ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
836 } 1976 }
837 1977
… …
849 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1989 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 1990
851/*****************************************************************************/ 1991/*****************************************************************************/
852 1992
853/* dummy callback for pending events */ 1993/* dummy callback for pending events */
854static void noinline 1994noinline
1995static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 1997{
857} 1998}
858 1999
859void noinline 2000noinline
2001void
860ev_feed_event (EV_P_ void *w, int revents) 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2003{
862 W w_ = (W)w; 2004 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
864 2006
865 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
… …
869 w_->pending = ++pendingcnt [pri]; 2011 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2012 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
871 pendings [pri][w_->pending - 1].w = w_; 2013 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2014 pendings [pri][w_->pending - 1].events = revents;
873 } 2015 }
2016
2017 pendingpri = NUMPRI - 1;
874} 2018}
875 2019
876inline_speed void 2020inline_speed void
877feed_reverse (EV_P_ W w) 2021feed_reverse (EV_P_ W w)
878{ 2022{
… …
924 if (expect_true (!anfd->reify)) 2068 if (expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
926} 2070}
927 2071
928void 2072void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2074{
931 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
933} 2077}
934 2078
… …
937inline_size void 2081inline_size void
938fd_reify (EV_P) 2082fd_reify (EV_P)
939{ 2083{
940 int i; 2084 int i;
941 2085
2086#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2087 for (i = 0; i < fdchangecnt; ++i)
2088 {
2089 int fd = fdchanges [i];
2090 ANFD *anfd = anfds + fd;
2091
2092 if (anfd->reify & EV__IOFDSET && anfd->head)
2093 {
2094 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2095
2096 if (handle != anfd->handle)
2097 {
2098 unsigned long arg;
2099
2100 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2101
2102 /* handle changed, but fd didn't - we need to do it in two steps */
2103 backend_modify (EV_A_ fd, anfd->events, 0);
2104 anfd->events = 0;
2105 anfd->handle = handle;
2106 }
2107 }
2108 }
2109#endif
2110
942 for (i = 0; i < fdchangecnt; ++i) 2111 for (i = 0; i < fdchangecnt; ++i)
943 { 2112 {
944 int fd = fdchanges [i]; 2113 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2114 ANFD *anfd = anfds + fd;
946 ev_io *w; 2115 ev_io *w;
… …
948 unsigned char o_events = anfd->events; 2117 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 2118 unsigned char o_reify = anfd->reify;
950 2119
951 anfd->reify = 0; 2120 anfd->reify = 0;
952 2121
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 */ 2122 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 2123 {
964 anfd->events = 0; 2124 anfd->events = 0;
965 2125
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2126 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
976 2136
977 fdchangecnt = 0; 2137 fdchangecnt = 0;
978} 2138}
979 2139
980/* something about the given fd changed */ 2140/* something about the given fd changed */
981inline_size void 2141inline_size
2142void
982fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
983{ 2144{
984 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
985 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
986 2147
… …
991 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
992 } 2153 }
993} 2154}
994 2155
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2156/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 2157inline_speed ecb_cold void
997fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
998{ 2159{
999 ev_io *w; 2160 ev_io *w;
1000 2161
1001 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2165 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 2166 }
1006} 2167}
1007 2168
1008/* check whether the given fd is actually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 2170inline_size ecb_cold int
1010fd_valid (int fd) 2171fd_valid (int fd)
1011{ 2172{
1012#ifdef _WIN32 2173#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 2175#else
1015 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
1016#endif 2177#endif
1017} 2178}
1018 2179
1019/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
1020static void noinline 2181noinline ecb_cold
2182static void
1021fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
1022{ 2184{
1023 int fd; 2185 int fd;
1024 2186
1025 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
1029} 2191}
1030 2192
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 2193/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 2194noinline ecb_cold
2195static void
1033fd_enomem (EV_P) 2196fd_enomem (EV_P)
1034{ 2197{
1035 int fd; 2198 int fd;
1036 2199
1037 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
… …
1041 break; 2204 break;
1042 } 2205 }
1043} 2206}
1044 2207
1045/* usually called after fork if backend needs to re-arm all fds from scratch */ 2208/* usually called after fork if backend needs to re-arm all fds from scratch */
1046static void noinline 2209noinline
2210static void
1047fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
1048{ 2212{
1049 int fd; 2213 int fd;
1050 2214
1051 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1232 2396
1233/*****************************************************************************/ 2397/*****************************************************************************/
1234 2398
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2400
1237static void noinline 2401noinline ecb_cold
2402static void
1238evpipe_init (EV_P) 2403evpipe_init (EV_P)
1239{ 2404{
1240 if (!ev_is_active (&pipe_w)) 2405 if (!ev_is_active (&pipe_w))
1241 { 2406 {
2407 int fds [2];
2408
1242# if EV_USE_EVENTFD 2409# if EV_USE_EVENTFD
2410 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2411 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2412 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2413 fds [1] = eventfd (0, 0);
1246 2414
1247 if (evfd >= 0) 2415 if (fds [1] < 0)
2416# endif
1248 { 2417 {
2418 while (pipe (fds))
2419 ev_syserr ("(libev) error creating signal/async pipe");
2420
2421 fd_intern (fds [0]);
2422 }
2423
1249 evpipe [0] = -1; 2424 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2425
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2426 if (evpipe [1] < 0)
2427 evpipe [1] = fds [1]; /* first call, set write fd */
2428 else
2429 {
2430 /* on subsequent calls, do not change evpipe [1] */
2431 /* so that evpipe_write can always rely on its value. */
2432 /* this branch does not do anything sensible on windows, */
2433 /* so must not be executed on windows */
2434
2435 dup2 (fds [1], evpipe [1]);
2436 close (fds [1]);
2437 }
2438
2439 fd_intern (evpipe [1]);
2440
2441 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2442 ev_io_start (EV_A_ &pipe_w);
2443 ev_unref (EV_A); /* watcher should not keep loop alive */
2444 }
2445}
2446
2447inline_speed void
2448evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2449{
2450 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2451
2452 if (expect_true (*flag))
2453 return;
2454
2455 *flag = 1;
2456 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2457
2458 pipe_write_skipped = 1;
2459
2460 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2461
2462 if (pipe_write_wanted)
2463 {
2464 int old_errno;
2465
2466 pipe_write_skipped = 0;
2467 ECB_MEMORY_FENCE_RELEASE;
2468
2469 old_errno = errno; /* save errno because write will clobber it */
2470
2471#if EV_USE_EVENTFD
2472 if (evpipe [0] < 0)
2473 {
2474 uint64_t counter = 1;
2475 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2476 }
1253 else 2477 else
1254# endif 2478#endif
1255 { 2479 {
1256 while (pipe (evpipe)) 2480#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2481 WSABUF buf;
1258 2482 DWORD sent;
1259 fd_intern (evpipe [0]); 2483 buf.buf = (char *)&buf;
1260 fd_intern (evpipe [1]); 2484 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2485 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2486#else
2487 write (evpipe [1], &(evpipe [1]), 1);
2488#endif
1262 } 2489 }
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 2490
1294 errno = old_errno; 2491 errno = old_errno;
1295 } 2492 }
1296} 2493}
1297 2494
… …
1300static void 2497static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2498pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2499{
1303 int i; 2500 int i;
1304 2501
2502 if (revents & EV_READ)
2503 {
1305#if EV_USE_EVENTFD 2504#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2505 if (evpipe [0] < 0)
1307 { 2506 {
1308 uint64_t counter; 2507 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2508 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2509 }
1311 else 2510 else
1312#endif 2511#endif
1313 { 2512 {
1314 char dummy; 2513 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2514#ifdef _WIN32
2515 WSABUF buf;
2516 DWORD recvd;
2517 DWORD flags = 0;
2518 buf.buf = dummy;
2519 buf.len = sizeof (dummy);
2520 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2521#else
1316 read (evpipe [0], &dummy, 1); 2522 read (evpipe [0], &dummy, sizeof (dummy));
2523#endif
2524 }
1317 } 2525 }
1318 2526
2527 pipe_write_skipped = 0;
2528
2529 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2530
2531#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2532 if (sig_pending)
1320 { 2533 {
1321 sig_pending = 0; 2534 sig_pending = 0;
2535
2536 ECB_MEMORY_FENCE;
1322 2537
1323 for (i = EV_NSIG - 1; i--; ) 2538 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2539 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2540 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2541 }
2542#endif
1327 2543
1328#if EV_ASYNC_ENABLE 2544#if EV_ASYNC_ENABLE
1329 if (async_pending) 2545 if (async_pending)
1330 { 2546 {
1331 async_pending = 0; 2547 async_pending = 0;
2548
2549 ECB_MEMORY_FENCE;
1332 2550
1333 for (i = asynccnt; i--; ) 2551 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2552 if (asyncs [i]->sent)
1335 { 2553 {
1336 asyncs [i]->sent = 0; 2554 asyncs [i]->sent = 0;
2555 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2556 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2557 }
1339 } 2558 }
1340#endif 2559#endif
1341} 2560}
1342 2561
1343/*****************************************************************************/ 2562/*****************************************************************************/
1344 2563
2564void
2565ev_feed_signal (int signum) EV_NOEXCEPT
2566{
2567#if EV_MULTIPLICITY
2568 EV_P;
2569 ECB_MEMORY_FENCE_ACQUIRE;
2570 EV_A = signals [signum - 1].loop;
2571
2572 if (!EV_A)
2573 return;
2574#endif
2575
2576 signals [signum - 1].pending = 1;
2577 evpipe_write (EV_A_ &sig_pending);
2578}
2579
1345static void 2580static void
1346ev_sighandler (int signum) 2581ev_sighandler (int signum)
1347{ 2582{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2583#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2584 signal (signum, ev_sighandler);
1354#endif 2585#endif
1355 2586
1356 signals [signum - 1].pending = 1; 2587 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2588}
1359 2589
1360void noinline 2590noinline
2591void
1361ev_feed_signal_event (EV_P_ int signum) 2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1362{ 2593{
1363 WL w; 2594 WL w;
1364 2595
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2597 return;
1367 2598
1368 --signum; 2599 --signum;
1369 2600
1370#if EV_MULTIPLICITY 2601#if EV_MULTIPLICITY
… …
1374 if (expect_false (signals [signum].loop != EV_A)) 2605 if (expect_false (signals [signum].loop != EV_A))
1375 return; 2606 return;
1376#endif 2607#endif
1377 2608
1378 signals [signum].pending = 0; 2609 signals [signum].pending = 0;
2610 ECB_MEMORY_FENCE_RELEASE;
1379 2611
1380 for (w = signals [signum].head; w; w = w->next) 2612 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2613 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2614}
1383 2615
… …
1462 2694
1463#endif 2695#endif
1464 2696
1465/*****************************************************************************/ 2697/*****************************************************************************/
1466 2698
2699#if EV_USE_IOCP
2700# include "ev_iocp.c"
2701#endif
1467#if EV_USE_PORT 2702#if EV_USE_PORT
1468# include "ev_port.c" 2703# include "ev_port.c"
1469#endif 2704#endif
1470#if EV_USE_KQUEUE 2705#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2706# include "ev_kqueue.c"
… …
1478#endif 2713#endif
1479#if EV_USE_SELECT 2714#if EV_USE_SELECT
1480# include "ev_select.c" 2715# include "ev_select.c"
1481#endif 2716#endif
1482 2717
1483int 2718ecb_cold int
1484ev_version_major (void) 2719ev_version_major (void) EV_NOEXCEPT
1485{ 2720{
1486 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
1487} 2722}
1488 2723
1489int 2724ecb_cold int
1490ev_version_minor (void) 2725ev_version_minor (void) EV_NOEXCEPT
1491{ 2726{
1492 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
1493} 2728}
1494 2729
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2730/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2731inline_size ecb_cold int
1497enable_secure (void) 2732enable_secure (void)
1498{ 2733{
1499#ifdef _WIN32 2734#ifdef _WIN32
1500 return 0; 2735 return 0;
1501#else 2736#else
1502 return getuid () != geteuid () 2737 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2738 || getgid () != getegid ();
1504#endif 2739#endif
1505} 2740}
1506 2741
2742ecb_cold
1507unsigned int 2743unsigned int
1508ev_supported_backends (void) 2744ev_supported_backends (void) EV_NOEXCEPT
1509{ 2745{
1510 unsigned int flags = 0; 2746 unsigned int flags = 0;
1511 2747
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1517 2753
1518 return flags; 2754 return flags;
1519} 2755}
1520 2756
2757ecb_cold
1521unsigned int 2758unsigned int
1522ev_recommended_backends (void) 2759ev_recommended_backends (void) EV_NOEXCEPT
1523{ 2760{
1524 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
1525 2762
1526#ifndef __NetBSD__ 2763#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
… …
1538#endif 2775#endif
1539 2776
1540 return flags; 2777 return flags;
1541} 2778}
1542 2779
2780ecb_cold
1543unsigned int 2781unsigned int
1544ev_embeddable_backends (void) 2782ev_embeddable_backends (void) EV_NOEXCEPT
1545{ 2783{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1547 2785
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2786 /* 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 */ 2787 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550 flags &= ~EVBACKEND_EPOLL; 2788 flags &= ~EVBACKEND_EPOLL;
1551 2789
1552 return flags; 2790 return flags;
1553} 2791}
1554 2792
1555unsigned int 2793unsigned int
1556ev_backend (EV_P) 2794ev_backend (EV_P) EV_NOEXCEPT
1557{ 2795{
1558 return backend; 2796 return backend;
1559} 2797}
1560 2798
1561#if EV_FEATURE_API 2799#if EV_FEATURE_API
1562unsigned int 2800unsigned int
1563ev_iteration (EV_P) 2801ev_iteration (EV_P) EV_NOEXCEPT
1564{ 2802{
1565 return loop_count; 2803 return loop_count;
1566} 2804}
1567 2805
1568unsigned int 2806unsigned int
1569ev_depth (EV_P) 2807ev_depth (EV_P) EV_NOEXCEPT
1570{ 2808{
1571 return loop_depth; 2809 return loop_depth;
1572} 2810}
1573 2811
1574void 2812void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1576{ 2814{
1577 io_blocktime = interval; 2815 io_blocktime = interval;
1578} 2816}
1579 2817
1580void 2818void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1582{ 2820{
1583 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
1584} 2822}
1585 2823
1586void 2824void
1587ev_set_userdata (EV_P_ void *data) 2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1588{ 2826{
1589 userdata = data; 2827 userdata = data;
1590} 2828}
1591 2829
1592void * 2830void *
1593ev_userdata (EV_P) 2831ev_userdata (EV_P) EV_NOEXCEPT
1594{ 2832{
1595 return userdata; 2833 return userdata;
1596} 2834}
1597 2835
2836void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2837ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1599{ 2838{
1600 invoke_cb = invoke_pending_cb; 2839 invoke_cb = invoke_pending_cb;
1601} 2840}
1602 2841
2842void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2843ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1604{ 2844{
1605 release_cb = release; 2845 release_cb = release;
1606 acquire_cb = acquire; 2846 acquire_cb = acquire;
1607} 2847}
1608#endif 2848#endif
1609 2849
1610/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
1611static void noinline 2851noinline ecb_cold
2852static void
1612loop_init (EV_P_ unsigned int flags) 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1613{ 2854{
1614 if (!backend) 2855 if (!backend)
1615 { 2856 {
2857 origflags = flags;
2858
1616#if EV_USE_REALTIME 2859#if EV_USE_REALTIME
1617 if (!have_realtime) 2860 if (!have_realtime)
1618 { 2861 {
1619 struct timespec ts; 2862 struct timespec ts;
1620 2863
… …
1642 if (!(flags & EVFLAG_NOENV) 2885 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 2886 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 2887 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 2888 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 2889
1647 ev_rt_now = ev_time (); 2890 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 2891 mn_now = get_clock ();
1649 now_floor = mn_now; 2892 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 2893 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 2894#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 2895 invoke_cb = ev_invoke_pending;
1653#endif 2896#endif
1654 2897
1655 io_blocktime = 0.; 2898 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 2899 timeout_blocktime = 0.;
1657 backend = 0; 2900 backend = 0;
1658 backend_fd = -1; 2901 backend_fd = -1;
1659 sig_pending = 0; 2902 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 2903#if EV_ASYNC_ENABLE
1661 async_pending = 0; 2904 async_pending = 0;
1662#endif 2905#endif
2906 pipe_write_skipped = 0;
2907 pipe_write_wanted = 0;
2908 evpipe [0] = -1;
2909 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 2910#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2911 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 2912#endif
1666#if EV_USE_SIGNALFD 2913#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2914 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 2915#endif
1669 2916
1670 if (!(flags & 0x0000ffffU)) 2917 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 2918 flags |= ev_recommended_backends ();
1672 2919
2920#if EV_USE_IOCP
2921 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2922#endif
1673#if EV_USE_PORT 2923#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2924 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 2925#endif
1676#if EV_USE_KQUEUE 2926#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2927 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1694#endif 2944#endif
1695 } 2945 }
1696} 2946}
1697 2947
1698/* free up a loop structure */ 2948/* free up a loop structure */
1699static void noinline 2949ecb_cold
2950void
1700loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
1701{ 2952{
1702 int i; 2953 int i;
2954
2955#if EV_MULTIPLICITY
2956 /* mimic free (0) */
2957 if (!EV_A)
2958 return;
2959#endif
2960
2961#if EV_CLEANUP_ENABLE
2962 /* queue cleanup watchers (and execute them) */
2963 if (expect_false (cleanupcnt))
2964 {
2965 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2966 EV_INVOKE_PENDING;
2967 }
2968#endif
2969
2970#if EV_CHILD_ENABLE
2971 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2972 {
2973 ev_ref (EV_A); /* child watcher */
2974 ev_signal_stop (EV_A_ &childev);
2975 }
2976#endif
1703 2977
1704 if (ev_is_active (&pipe_w)) 2978 if (ev_is_active (&pipe_w))
1705 { 2979 {
1706 /*ev_ref (EV_A);*/ 2980 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 2981 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 2982
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]); 2983 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 2984 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 2985 }
1720 2986
1721#if EV_USE_SIGNALFD 2987#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 2988 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 2989 close (sigfd);
… …
1729#endif 2995#endif
1730 2996
1731 if (backend_fd >= 0) 2997 if (backend_fd >= 0)
1732 close (backend_fd); 2998 close (backend_fd);
1733 2999
3000#if EV_USE_IOCP
3001 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3002#endif
1734#if EV_USE_PORT 3003#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3004 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 3005#endif
1737#if EV_USE_KQUEUE 3006#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1765 array_free (periodic, EMPTY); 3034 array_free (periodic, EMPTY);
1766#endif 3035#endif
1767#if EV_FORK_ENABLE 3036#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 3037 array_free (fork, EMPTY);
1769#endif 3038#endif
3039#if EV_CLEANUP_ENABLE
3040 array_free (cleanup, EMPTY);
3041#endif
1770 array_free (prepare, EMPTY); 3042 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 3043 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 3044#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 3045 array_free (async, EMPTY);
1774#endif 3046#endif
1775 3047
1776 backend = 0; 3048 backend = 0;
3049
3050#if EV_MULTIPLICITY
3051 if (ev_is_default_loop (EV_A))
3052#endif
3053 ev_default_loop_ptr = 0;
3054#if EV_MULTIPLICITY
3055 else
3056 ev_free (EV_A);
3057#endif
1777} 3058}
1778 3059
1779#if EV_USE_INOTIFY 3060#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 3061inline_size void infy_fork (EV_P);
1781#endif 3062#endif
… …
1794#endif 3075#endif
1795#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 3077 infy_fork (EV_A);
1797#endif 3078#endif
1798 3079
3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
1800 { 3082 {
1801 /* this "locks" the handlers against writing to the pipe */ 3083 /* 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 3084
1808 ev_ref (EV_A); 3085 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
1810 3087
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 3088 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 3089 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]);
1820 }
1821 3090
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A); 3091 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */ 3092 /* iterate over everything, in case we missed something before */
1825 pipecb (EV_A_ &pipe_w, EV_READ); 3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1826#endif
1827 } 3094 }
3095#endif
1828 3096
1829 postfork = 0; 3097 postfork = 0;
1830} 3098}
1831 3099
1832#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
1833 3101
3102ecb_cold
1834struct ev_loop * 3103struct ev_loop *
1835ev_loop_new (unsigned int flags) 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
1836{ 3105{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 3107
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
1841 3110
1842 if (ev_backend (EV_A)) 3111 if (ev_backend (EV_A))
1843 return EV_A; 3112 return EV_A;
1844 3113
3114 ev_free (EV_A);
1845 return 0; 3115 return 0;
1846} 3116}
1847 3117
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 */ 3118#endif /* multiplicity */
1861 3119
1862#if EV_VERIFY 3120#if EV_VERIFY
1863static void noinline 3121noinline ecb_cold
3122static void
1864verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
1865{ 3124{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 3126
1868 if (w->pending) 3127 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 3129}
1871 3130
1872static void noinline 3131noinline ecb_cold
3132static void
1873verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
1874{ 3134{
1875 int i; 3135 int i;
1876 3136
1877 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 3142
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 3144 }
1885} 3145}
1886 3146
1887static void noinline 3147noinline ecb_cold
3148static void
1888array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
1889{ 3150{
1890 while (cnt--) 3151 while (cnt--)
1891 { 3152 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 3155 }
1895} 3156}
1896#endif 3157#endif
1897 3158
1898#if EV_FEATURE_API 3159#if EV_FEATURE_API
1899void 3160void ecb_cold
1900ev_verify (EV_P) 3161ev_verify (EV_P) EV_NOEXCEPT
1901{ 3162{
1902#if EV_VERIFY 3163#if EV_VERIFY
1903 int i; 3164 int i;
1904 WL w; 3165 WL w, w2;
1905 3166
1906 assert (activecnt >= -1); 3167 assert (activecnt >= -1);
1907 3168
1908 assert (fdchangemax >= fdchangecnt); 3169 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 3170 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 3172
1912 assert (anfdmax >= 0); 3173 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 3174 for (i = 0; i < anfdmax; ++i)
3175 {
3176 int j = 0;
3177
1914 for (w = anfds [i].head; w; w = w->next) 3178 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 3179 {
1916 verify_watcher (EV_A_ (W)w); 3180 verify_watcher (EV_A_ (W)w);
3181
3182 if (j++ & 1)
3183 {
3184 assert (("libev: io watcher list contains a loop", w != w2));
3185 w2 = w2->next;
3186 }
3187
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3188 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)); 3189 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 3190 }
3191 }
1920 3192
1921 assert (timermax >= timercnt); 3193 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 3194 verify_heap (EV_A_ timers, timercnt);
1923 3195
1924#if EV_PERIODIC_ENABLE 3196#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 3211#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 3212 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 3213 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 3214#endif
1943 3215
3216#if EV_CLEANUP_ENABLE
3217 assert (cleanupmax >= cleanupcnt);
3218 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3219#endif
3220
1944#if EV_ASYNC_ENABLE 3221#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 3222 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 3223 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 3224#endif
1948 3225
… …
1965#endif 3242#endif
1966} 3243}
1967#endif 3244#endif
1968 3245
1969#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
1970struct ev_loop * 3248struct ev_loop *
1971ev_default_loop_init (unsigned int flags)
1972#else 3249#else
1973int 3250int
3251#endif
1974ev_default_loop (unsigned int flags) 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
1975#endif
1976{ 3253{
1977 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
1978 { 3255 {
1979#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 3276
2000 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
2001} 3278}
2002 3279
2003void 3280void
2004ev_default_destroy (void) 3281ev_loop_fork (EV_P) EV_NOEXCEPT
2005{ 3282{
2006#if EV_MULTIPLICITY 3283 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} 3284}
2029 3285
2030/*****************************************************************************/ 3286/*****************************************************************************/
2031 3287
2032void 3288void
… …
2034{ 3290{
2035 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
2036} 3292}
2037 3293
2038unsigned int 3294unsigned int
2039ev_pending_count (EV_P) 3295ev_pending_count (EV_P) EV_NOEXCEPT
2040{ 3296{
2041 int pri; 3297 int pri;
2042 unsigned int count = 0; 3298 unsigned int count = 0;
2043 3299
2044 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
2045 count += pendingcnt [pri]; 3301 count += pendingcnt [pri];
2046 3302
2047 return count; 3303 return count;
2048} 3304}
2049 3305
2050void noinline 3306noinline
3307void
2051ev_invoke_pending (EV_P) 3308ev_invoke_pending (EV_P)
2052{ 3309{
2053 int pri; 3310 pendingpri = NUMPRI;
2054 3311
2055 for (pri = NUMPRI; pri--; ) 3312 do
3313 {
3314 --pendingpri;
3315
3316 /* pendingpri possibly gets modified in the inner loop */
2056 while (pendingcnt [pri]) 3317 while (pendingcnt [pendingpri])
2057 { 3318 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3320
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; 3321 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2066 } 3324 }
3325 }
3326 while (pendingpri);
2067} 3327}
2068 3328
2069#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3388 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3389 }
2130} 3390}
2131 3391
2132#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
3393
3394noinline
3395static void
3396periodic_recalc (EV_P_ ev_periodic *w)
3397{
3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3399 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3400
3401 /* the above almost always errs on the low side */
3402 while (at <= ev_rt_now)
3403 {
3404 ev_tstamp nat = at + w->interval;
3405
3406 /* when resolution fails us, we use ev_rt_now */
3407 if (expect_false (nat == at))
3408 {
3409 at = ev_rt_now;
3410 break;
3411 }
3412
3413 at = nat;
3414 }
3415
3416 ev_at (w) = at;
3417}
3418
2133/* make periodics pending */ 3419/* make periodics pending */
2134inline_size void 3420inline_size void
2135periodics_reify (EV_P) 3421periodics_reify (EV_P)
2136{ 3422{
2137 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2138 3424
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3425 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3426 {
2141 int feed_count = 0;
2142
2143 do 3427 do
2144 { 3428 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3429 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3430
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3431 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3440 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3441 downheap (periodics, periodiccnt, HEAP0);
2158 } 3442 }
2159 else if (w->interval) 3443 else if (w->interval)
2160 { 3444 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3445 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]); 3446 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3447 downheap (periodics, periodiccnt, HEAP0);
2177 } 3448 }
2178 else 3449 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3450 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3458 }
2188} 3459}
2189 3460
2190/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3462/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3463noinline ecb_cold
3464static void
2193periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
2194{ 3466{
2195 int i; 3467 int i;
2196 3468
2197 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3472 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3473
2202 if (w->reschedule_cb) 3474 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3475 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3476 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3477 periodic_recalc (EV_A_ w);
2206 3478
2207 ANHE_at_cache (periodics [i]); 3479 ANHE_at_cache (periodics [i]);
2208 } 3480 }
2209 3481
2210 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
2211} 3483}
2212#endif 3484#endif
2213 3485
2214/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
2215static void noinline 3487noinline ecb_cold
3488static void
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3490{
2218 int i; 3491 int i;
2219 3492
2220 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3530 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3531 * in the unlikely event of having been preempted here.
2259 */ 3532 */
2260 for (i = 4; --i; ) 3533 for (i = 4; --i; )
2261 { 3534 {
3535 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3536 rtmn_diff = ev_rt_now - mn_now;
2263 3537
3538 diff = odiff - rtmn_diff;
3539
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3540 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265 return; /* all is well */ 3541 return; /* all is well */
2266 3542
2267 ev_rt_now = ev_time (); 3543 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3544 mn_now = get_clock ();
2269 now_floor = mn_now; 3545 now_floor = mn_now;
… …
2291 3567
2292 mn_now = ev_rt_now; 3568 mn_now = ev_rt_now;
2293 } 3569 }
2294} 3570}
2295 3571
2296void 3572int
2297ev_loop (EV_P_ int flags) 3573ev_run (EV_P_ int flags)
2298{ 3574{
2299#if EV_FEATURE_API 3575#if EV_FEATURE_API
2300 ++loop_depth; 3576 ++loop_depth;
2301#endif 3577#endif
2302 3578
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3579 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 3580
2305 loop_done = EVUNLOOP_CANCEL; 3581 loop_done = EVBREAK_CANCEL;
2306 3582
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3583 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 3584
2309 do 3585 do
2310 { 3586 {
… …
2353 /* calculate blocking time */ 3629 /* calculate blocking time */
2354 { 3630 {
2355 ev_tstamp waittime = 0.; 3631 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 3632 ev_tstamp sleeptime = 0.;
2357 3633
3634 /* remember old timestamp for io_blocktime calculation */
3635 ev_tstamp prev_mn_now = mn_now;
3636
3637 /* update time to cancel out callback processing overhead */
3638 time_update (EV_A_ 1e100);
3639
3640 /* from now on, we want a pipe-wake-up */
3641 pipe_write_wanted = 1;
3642
3643 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3644
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3645 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2359 { 3646 {
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; 3647 waittime = MAX_BLOCKTIME;
2367 3648
2368 if (timercnt) 3649 if (timercnt)
2369 { 3650 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3651 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3652 if (waittime > to) waittime = to;
2372 } 3653 }
2373 3654
2374#if EV_PERIODIC_ENABLE 3655#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3656 if (periodiccnt)
2376 { 3657 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3658 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3659 if (waittime > to) waittime = to;
2379 } 3660 }
2380#endif 3661#endif
2381 3662
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3663 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3664 if (expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3665 waittime = timeout_blocktime;
3666
3667 /* at this point, we NEED to wait, so we have to ensure */
3668 /* to pass a minimum nonzero value to the backend */
3669 if (expect_false (waittime < backend_mintime))
3670 waittime = backend_mintime;
2385 3671
2386 /* extra check because io_blocktime is commonly 0 */ 3672 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3673 if (expect_false (io_blocktime))
2388 { 3674 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3675 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 3676
2391 if (sleeptime > waittime - backend_fudge) 3677 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 3678 sleeptime = waittime - backend_mintime;
2393 3679
2394 if (expect_true (sleeptime > 0.)) 3680 if (expect_true (sleeptime > 0.))
2395 { 3681 {
2396 ev_sleep (sleeptime); 3682 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 3683 waittime -= sleeptime;
… …
2400 } 3686 }
2401 3687
2402#if EV_FEATURE_API 3688#if EV_FEATURE_API
2403 ++loop_count; 3689 ++loop_count;
2404#endif 3690#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3691 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 3692 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3693 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3694
3695 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3696
3697 ECB_MEMORY_FENCE_ACQUIRE;
3698 if (pipe_write_skipped)
3699 {
3700 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3701 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3702 }
3703
2408 3704
2409 /* update ev_rt_now, do magic */ 3705 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 3706 time_update (EV_A_ waittime + sleeptime);
2411 } 3707 }
2412 3708
… …
2430 EV_INVOKE_PENDING; 3726 EV_INVOKE_PENDING;
2431 } 3727 }
2432 while (expect_true ( 3728 while (expect_true (
2433 activecnt 3729 activecnt
2434 && !loop_done 3730 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3731 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 3732 ));
2437 3733
2438 if (loop_done == EVUNLOOP_ONE) 3734 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 3735 loop_done = EVBREAK_CANCEL;
2440 3736
2441#if EV_FEATURE_API 3737#if EV_FEATURE_API
2442 --loop_depth; 3738 --loop_depth;
2443#endif 3739#endif
2444}
2445 3740
3741 return activecnt;
3742}
3743
2446void 3744void
2447ev_unloop (EV_P_ int how) 3745ev_break (EV_P_ int how) EV_NOEXCEPT
2448{ 3746{
2449 loop_done = how; 3747 loop_done = how;
2450} 3748}
2451 3749
2452void 3750void
2453ev_ref (EV_P) 3751ev_ref (EV_P) EV_NOEXCEPT
2454{ 3752{
2455 ++activecnt; 3753 ++activecnt;
2456} 3754}
2457 3755
2458void 3756void
2459ev_unref (EV_P) 3757ev_unref (EV_P) EV_NOEXCEPT
2460{ 3758{
2461 --activecnt; 3759 --activecnt;
2462} 3760}
2463 3761
2464void 3762void
2465ev_now_update (EV_P) 3763ev_now_update (EV_P) EV_NOEXCEPT
2466{ 3764{
2467 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
2468} 3766}
2469 3767
2470void 3768void
2471ev_suspend (EV_P) 3769ev_suspend (EV_P) EV_NOEXCEPT
2472{ 3770{
2473 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
2474} 3772}
2475 3773
2476void 3774void
2477ev_resume (EV_P) 3775ev_resume (EV_P) EV_NOEXCEPT
2478{ 3776{
2479 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
2480 3778
2481 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2521 w->pending = 0; 3819 w->pending = 0;
2522 } 3820 }
2523} 3821}
2524 3822
2525int 3823int
2526ev_clear_pending (EV_P_ void *w) 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2527{ 3825{
2528 W w_ = (W)w; 3826 W w_ = (W)w;
2529 int pending = w_->pending; 3827 int pending = w_->pending;
2530 3828
2531 if (expect_true (pending)) 3829 if (expect_true (pending))
… …
2563 w->active = 0; 3861 w->active = 0;
2564} 3862}
2565 3863
2566/*****************************************************************************/ 3864/*****************************************************************************/
2567 3865
2568void noinline 3866noinline
3867void
2569ev_io_start (EV_P_ ev_io *w) 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2570{ 3869{
2571 int fd = w->fd; 3870 int fd = w->fd;
2572 3871
2573 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
2574 return; 3873 return;
… …
2580 3879
2581 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3881 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2583 wlist_add (&anfds[fd].head, (WL)w); 3882 wlist_add (&anfds[fd].head, (WL)w);
2584 3883
3884 /* common bug, apparently */
3885 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3886
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3887 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
2587 3889
2588 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
2589} 3891}
2590 3892
2591void noinline 3893noinline
3894void
2592ev_io_stop (EV_P_ ev_io *w) 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2593{ 3896{
2594 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
2596 return; 3899 return;
2597 3900
… …
2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2606 3909
2607 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
2608} 3911}
2609 3912
2610void noinline 3913noinline
3914void
2611ev_timer_start (EV_P_ ev_timer *w) 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2612{ 3916{
2613 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
2614 return; 3918 return;
2615 3919
2616 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
… …
2629 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
2630 3934
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3935 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 3936}
2633 3937
2634void noinline 3938noinline
3939void
2635ev_timer_stop (EV_P_ ev_timer *w) 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2636{ 3941{
2637 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
2639 return; 3944 return;
2640 3945
… …
2659 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
2660 3965
2661 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2662} 3967}
2663 3968
2664void noinline 3969noinline
3970void
2665ev_timer_again (EV_P_ ev_timer *w) 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2666{ 3972{
2667 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3974
3975 clear_pending (EV_A_ (W)w);
2668 3976
2669 if (ev_is_active (w)) 3977 if (ev_is_active (w))
2670 { 3978 {
2671 if (w->repeat) 3979 if (w->repeat)
2672 { 3980 {
… …
2685 3993
2686 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
2687} 3995}
2688 3996
2689ev_tstamp 3997ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2691{ 3999{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2693} 4001}
2694 4002
2695#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
2696void noinline 4004noinline
4005void
2697ev_periodic_start (EV_P_ ev_periodic *w) 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2698{ 4007{
2699 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
2700 return; 4009 return;
2701 4010
2702 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4012 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 4013 else if (w->interval)
2705 { 4014 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4015 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 */ 4016 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 4017 }
2710 else 4018 else
2711 ev_at (w) = w->offset; 4019 ev_at (w) = w->offset;
2712 4020
2713 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
2722 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
2723 4031
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4032 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 4033}
2726 4034
2727void noinline 4035noinline
4036void
2728ev_periodic_stop (EV_P_ ev_periodic *w) 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2729{ 4038{
2730 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
2732 return; 4041 return;
2733 4042
… …
2750 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
2751 4060
2752 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
2753} 4062}
2754 4063
2755void noinline 4064noinline
4065void
2756ev_periodic_again (EV_P_ ev_periodic *w) 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2757{ 4067{
2758 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
2761} 4071}
… …
2765# define SA_RESTART 0 4075# define SA_RESTART 0
2766#endif 4076#endif
2767 4077
2768#if EV_SIGNAL_ENABLE 4078#if EV_SIGNAL_ENABLE
2769 4079
2770void noinline 4080noinline
4081void
2771ev_signal_start (EV_P_ ev_signal *w) 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2772{ 4083{
2773 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
2774 return; 4085 return;
2775 4086
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4087 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2778#if EV_MULTIPLICITY 4089#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 4090 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4091 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 4092
2782 signals [w->signum - 1].loop = EV_A; 4093 signals [w->signum - 1].loop = EV_A;
4094 ECB_MEMORY_FENCE_RELEASE;
2783#endif 4095#endif
2784 4096
2785 EV_FREQUENT_CHECK; 4097 EV_FREQUENT_CHECK;
2786 4098
2787#if EV_USE_SIGNALFD 4099#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 4146 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 4147 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4148 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 4149 sigaction (w->signum, &sa, 0);
2838 4150
4151 if (origflags & EVFLAG_NOSIGMASK)
4152 {
2839 sigemptyset (&sa.sa_mask); 4153 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 4154 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4155 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4156 }
2842#endif 4157#endif
2843 } 4158 }
2844 4159
2845 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
2846} 4161}
2847 4162
2848void noinline 4163noinline
4164void
2849ev_signal_stop (EV_P_ ev_signal *w) 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2850{ 4166{
2851 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
2853 return; 4169 return;
2854 4170
… …
2885#endif 4201#endif
2886 4202
2887#if EV_CHILD_ENABLE 4203#if EV_CHILD_ENABLE
2888 4204
2889void 4205void
2890ev_child_start (EV_P_ ev_child *w) 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2891{ 4207{
2892#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4209 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 4210#endif
2895 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
… …
2902 4218
2903 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
2904} 4220}
2905 4221
2906void 4222void
2907ev_child_stop (EV_P_ ev_child *w) 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2908{ 4224{
2909 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
2911 return; 4227 return;
2912 4228
… …
2929 4245
2930#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2932#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
2933 4249
2934static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4250noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2935 4251
2936#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
2937 4253
2938/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4254/* 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) 4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 4256
2941static void noinline 4257noinline
4258static void
2942infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
2943{ 4260{
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); 4261 w->wd = inotify_add_watch (fs_fd, w->path,
4262 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4263 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4264 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 4265
2946 if (w->wd >= 0) 4266 if (w->wd >= 0)
2947 { 4267 {
2948 struct statfs sfs; 4268 struct statfs sfs;
2949 4269
… …
2953 4273
2954 if (!fs_2625) 4274 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4275 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 4276 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 4277 && (sfs.f_type == 0x1373 /* devfs */
4278 || sfs.f_type == 0x4006 /* fat */
4279 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 4280 || sfs.f_type == 0xEF53 /* ext2/3 */
4281 || sfs.f_type == 0x72b6 /* jffs2 */
4282 || sfs.f_type == 0x858458f6 /* ramfs */
4283 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 4284 || sfs.f_type == 0x3153464a /* jfs */
4285 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 4286 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 4287 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 4288 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4289 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 4290 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4291 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 4292 }
… …
2987 if (!pend || pend == path) 4313 if (!pend || pend == path)
2988 break; 4314 break;
2989 4315
2990 *pend = 0; 4316 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4317 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4318 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4319 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4320 }
2995 } 4321 }
2996 4322
2997 if (w->wd >= 0) 4323 if (w->wd >= 0)
… …
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3004} 4330}
3005 4331
3006static void noinline 4332noinline
4333static void
3007infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
3008{ 4335{
3009 int slot; 4336 int slot;
3010 int wd = w->wd; 4337 int wd = w->wd;
3011 4338
… …
3018 4345
3019 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
3020 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
3021} 4348}
3022 4349
3023static void noinline 4350noinline
4351static void
3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3025{ 4353{
3026 if (slot < 0) 4354 if (slot < 0)
3027 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4393 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4394 }
3067} 4395}
3068 4396
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 4397inline_size ecb_cold
4398void
3102ev_check_2625 (EV_P) 4399ev_check_2625 (EV_P)
3103{ 4400{
3104 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4402 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4403 */
… …
3111} 4408}
3112 4409
3113inline_size int 4410inline_size int
3114infy_newfd (void) 4411infy_newfd (void)
3115{ 4412{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4413#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4414 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4415 if (fd >= 0)
3119 return fd; 4416 return fd;
3120#endif 4417#endif
3121 return inotify_init (); 4418 return inotify_init ();
… …
3196#else 4493#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4495#endif
3199 4496
3200void 4497void
3201ev_stat_stat (EV_P_ ev_stat *w) 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3202{ 4499{
3203 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
3207} 4504}
3208 4505
3209static void noinline 4506noinline
4507static void
3210stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3211{ 4509{
3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3213 4511
3214 ev_statdata prev = w->attr; 4512 ev_statdata prev = w->attr;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4544 }
3247} 4545}
3248 4546
3249void 4547void
3250ev_stat_start (EV_P_ ev_stat *w) 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3251{ 4549{
3252 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
3253 return; 4551 return;
3254 4552
3255 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
… …
3276 4574
3277 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3278} 4576}
3279 4577
3280void 4578void
3281ev_stat_stop (EV_P_ ev_stat *w) 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3282{ 4580{
3283 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3285 return; 4583 return;
3286 4584
… …
3302} 4600}
3303#endif 4601#endif
3304 4602
3305#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
3306void 4604void
3307ev_idle_start (EV_P_ ev_idle *w) 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3308{ 4606{
3309 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
3310 return; 4608 return;
3311 4609
3312 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
… …
3325 4623
3326 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
3327} 4625}
3328 4626
3329void 4627void
3330ev_idle_stop (EV_P_ ev_idle *w) 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3331{ 4629{
3332 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
3334 return; 4632 return;
3335 4633
… …
3349} 4647}
3350#endif 4648#endif
3351 4649
3352#if EV_PREPARE_ENABLE 4650#if EV_PREPARE_ENABLE
3353void 4651void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4653{
3356 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
3357 return; 4655 return;
3358 4656
3359 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
… …
3364 4662
3365 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
3366} 4664}
3367 4665
3368void 4666void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3370{ 4668{
3371 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
3373 return; 4671 return;
3374 4672
… …
3387} 4685}
3388#endif 4686#endif
3389 4687
3390#if EV_CHECK_ENABLE 4688#if EV_CHECK_ENABLE
3391void 4689void
3392ev_check_start (EV_P_ ev_check *w) 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 4691{
3394 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
3395 return; 4693 return;
3396 4694
3397 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
… …
3402 4700
3403 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
3404} 4702}
3405 4703
3406void 4704void
3407ev_check_stop (EV_P_ ev_check *w) 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3408{ 4706{
3409 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
3411 return; 4709 return;
3412 4710
… …
3424 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
3425} 4723}
3426#endif 4724#endif
3427 4725
3428#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
3429void noinline 4727noinline
4728void
3430ev_embed_sweep (EV_P_ ev_embed *w) 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3431{ 4730{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 4731 ev_run (w->other, EVRUN_NOWAIT);
3433} 4732}
3434 4733
3435static void 4734static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 4735embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 4736{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 4738
3440 if (ev_cb (w)) 4739 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4740 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 4741 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 4742 ev_run (w->other, EVRUN_NOWAIT);
3444} 4743}
3445 4744
3446static void 4745static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 4747{
… …
3452 EV_P = w->other; 4751 EV_P = w->other;
3453 4752
3454 while (fdchangecnt) 4753 while (fdchangecnt)
3455 { 4754 {
3456 fd_reify (EV_A); 4755 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4756 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 4757 }
3459 } 4758 }
3460} 4759}
3461 4760
3462static void 4761static void
… …
3468 4767
3469 { 4768 {
3470 EV_P = w->other; 4769 EV_P = w->other;
3471 4770
3472 ev_loop_fork (EV_A); 4771 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4772 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 4773 }
3475 4774
3476 ev_embed_start (EV_A_ w); 4775 ev_embed_start (EV_A_ w);
3477} 4776}
3478 4777
… …
3483 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
3484} 4783}
3485#endif 4784#endif
3486 4785
3487void 4786void
3488ev_embed_start (EV_P_ ev_embed *w) 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3489{ 4788{
3490 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
3491 return; 4790 return;
3492 4791
3493 { 4792 {
… …
3514 4813
3515 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
3516} 4815}
3517 4816
3518void 4817void
3519ev_embed_stop (EV_P_ ev_embed *w) 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3520{ 4819{
3521 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
3523 return; 4822 return;
3524 4823
… …
3534} 4833}
3535#endif 4834#endif
3536 4835
3537#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
3538void 4837void
3539ev_fork_start (EV_P_ ev_fork *w) 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 4839{
3541 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
3542 return; 4841 return;
3543 4842
3544 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
… …
3549 4848
3550 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
3551} 4850}
3552 4851
3553void 4852void
3554ev_fork_stop (EV_P_ ev_fork *w) 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3555{ 4854{
3556 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
3558 return; 4857 return;
3559 4858
… …
3570 4869
3571 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
3572} 4871}
3573#endif 4872#endif
3574 4873
4874#if EV_CLEANUP_ENABLE
4875void
4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4877{
4878 if (expect_false (ev_is_active (w)))
4879 return;
4880
4881 EV_FREQUENT_CHECK;
4882
4883 ev_start (EV_A_ (W)w, ++cleanupcnt);
4884 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4885 cleanups [cleanupcnt - 1] = w;
4886
4887 /* cleanup watchers should never keep a refcount on the loop */
4888 ev_unref (EV_A);
4889 EV_FREQUENT_CHECK;
4890}
4891
4892void
4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4894{
4895 clear_pending (EV_A_ (W)w);
4896 if (expect_false (!ev_is_active (w)))
4897 return;
4898
4899 EV_FREQUENT_CHECK;
4900 ev_ref (EV_A);
4901
4902 {
4903 int active = ev_active (w);
4904
4905 cleanups [active - 1] = cleanups [--cleanupcnt];
4906 ev_active (cleanups [active - 1]) = active;
4907 }
4908
4909 ev_stop (EV_A_ (W)w);
4910
4911 EV_FREQUENT_CHECK;
4912}
4913#endif
4914
3575#if EV_ASYNC_ENABLE 4915#if EV_ASYNC_ENABLE
3576void 4916void
3577ev_async_start (EV_P_ ev_async *w) 4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3578{ 4918{
3579 if (expect_false (ev_is_active (w))) 4919 if (expect_false (ev_is_active (w)))
3580 return; 4920 return;
3581 4921
3582 w->sent = 0; 4922 w->sent = 0;
… …
3591 4931
3592 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
3593} 4933}
3594 4934
3595void 4935void
3596ev_async_stop (EV_P_ ev_async *w) 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3597{ 4937{
3598 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
3600 return; 4940 return;
3601 4941
… …
3612 4952
3613 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
3614} 4954}
3615 4955
3616void 4956void
3617ev_async_send (EV_P_ ev_async *w) 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3618{ 4958{
3619 w->sent = 1; 4959 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 4960 evpipe_write (EV_A_ &async_pending);
3621} 4961}
3622#endif 4962#endif
… …
3659 4999
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5000 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 5001}
3662 5002
3663void 5003void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3665{ 5005{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5006 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 5007
3674 once->cb = cb; 5008 once->cb = cb;
3675 once->arg = arg; 5009 once->arg = arg;
3676 5010
3677 ev_init (&once->io, once_cb_io); 5011 ev_init (&once->io, once_cb_io);
… …
3690} 5024}
3691 5025
3692/*****************************************************************************/ 5026/*****************************************************************************/
3693 5027
3694#if EV_WALK_ENABLE 5028#if EV_WALK_ENABLE
5029ecb_cold
3695void 5030void
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5031ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3697{ 5032{
3698 int i, j; 5033 int i, j;
3699 ev_watcher_list *wl, *wn; 5034 ev_watcher_list *wl, *wn;
3700 5035
3701 if (types & (EV_IO | EV_EMBED)) 5036 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5079 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 5080#endif
3746 5081
3747#if EV_IDLE_ENABLE 5082#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 5083 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 5084 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 5085 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 5086 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 5087#endif
3753 5088
3754#if EV_FORK_ENABLE 5089#if EV_FORK_ENABLE
… …
3807 5142
3808#if EV_MULTIPLICITY 5143#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 5144 #include "ev_wrap.h"
3810#endif 5145#endif
3811 5146
3812#ifdef __cplusplus
3813}
3814#endif
3815

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