ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.361 by root, Sun Oct 24 19:01:01 2010 UTC vs.
Revision 1.490 by root, Thu Jun 20 22:44:59 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52# endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#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
162#include <stdlib.h> 177#include <stdlib.h>
163#include <string.h> 178#include <string.h>
164#include <fcntl.h> 179#include <fcntl.h>
165#include <stddef.h> 180#include <stddef.h>
166 181
… …
178# include EV_H 193# include EV_H
179#else 194#else
180# include "ev.h" 195# include "ev.h"
181#endif 196#endif
182 197
183EV_CPP(extern "C" {) 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
184 208
185#ifndef _WIN32 209#ifndef _WIN32
186# include <sys/time.h> 210# include <sys/time.h>
187# include <sys/wait.h> 211# include <sys/wait.h>
188# include <unistd.h> 212# include <unistd.h>
189#else 213#else
190# include <io.h> 214# include <io.h>
191# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
192# include <windows.h> 217# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
195# endif 220# endif
196# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
197#endif 222#endif
198 223
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* 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 */
208 225
209/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 227#if defined EV_NSIG
211/* use what's provided */ 228/* use what's provided */
212#elif defined (NSIG) 229#elif defined NSIG
213# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 231#elif defined _NSIG
215# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 233#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 235#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 239#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 241#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 245#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 247#else
231# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 249#endif
233/* but consider reporting it, too! :) */ 250
234# define EV_NSIG 65 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
235#endif 253#endif
236 254
237#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 258# else
241# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
242# endif 260# endif
243#endif 261#endif
244 262
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
245#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 275# else
249# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
250# endif 277# endif
251#endif 278#endif
… …
288 315
289#ifndef EV_USE_PORT 316#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 317# define EV_USE_PORT 0
291#endif 318#endif
292 319
320#ifndef EV_USE_LINUXAIO
321# define EV_USE_LINUXAIO 0
322#endif
323
293#ifndef EV_USE_INOTIFY 324#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 326# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 327# else
297# define EV_USE_INOTIFY 0 328# define EV_USE_INOTIFY 0
… …
338 369
339#ifndef EV_HEAP_CACHE_AT 370#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 371# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 372#endif
342 373
374#ifdef __ANDROID__
375/* supposedly, android doesn't typedef fd_mask */
376# undef EV_USE_SELECT
377# define EV_USE_SELECT 0
378/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
379# undef EV_USE_CLOCK_SYSCALL
380# define EV_USE_CLOCK_SYSCALL 0
381#endif
382
383/* aix's poll.h seems to cause lots of trouble */
384#ifdef _AIX
385/* AIX has a completely broken poll.h header */
386# undef EV_USE_POLL
387# define EV_USE_POLL 0
388#endif
389
390#if EV_USE_LINUXAIO
391# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
392#endif
393
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 394/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 395/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 396#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 397# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 398# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 399# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 400# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 401# define EV_USE_MONOTONIC 1
351# else 402# else
… …
354# endif 405# endif
355#endif 406#endif
356 407
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 408/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 409
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
365#ifndef CLOCK_MONOTONIC 410#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 411# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 412# define EV_USE_MONOTONIC 0
368#endif 413#endif
369 414
… …
376# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
378#endif 423#endif
379 424
380#if !EV_USE_NANOSLEEP 425#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 426/* hp-ux has it in sys/time.h, which we unconditionally include above */
427# if !defined _WIN32 && !defined __hpux
382# include <sys/select.h> 428# include <sys/select.h>
383# endif 429# endif
384#endif 430#endif
385 431
386#if EV_USE_INOTIFY 432#if EV_USE_INOTIFY
… …
389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 435/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
390# ifndef IN_DONT_FOLLOW 436# ifndef IN_DONT_FOLLOW
391# undef EV_USE_INOTIFY 437# undef EV_USE_INOTIFY
392# define EV_USE_INOTIFY 0 438# define EV_USE_INOTIFY 0
393# endif 439# endif
394#endif
395
396#if EV_SELECT_IS_WINSOCKET
397# include <winsock.h>
398#endif 440#endif
399 441
400#if EV_USE_EVENTFD 442#if EV_USE_EVENTFD
401/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
402# include <stdint.h> 444# include <stdint.h>
… …
442#else 484#else
443# define EV_FREQUENT_CHECK do { } while (0) 485# define EV_FREQUENT_CHECK do { } while (0)
444#endif 486#endif
445 487
446/* 488/*
447 * This is used to avoid floating point rounding problems. 489 * This is used to work around floating point rounding problems.
448 * It is added to ev_rt_now when scheduling periodics
449 * to ensure progress, time-wise, even when rounding
450 * errors are against us.
451 * This value is good at least till the year 4000. 490 * This value is good at least till the year 4000.
452 * Better solutions welcome.
453 */ 491 */
454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 492#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
493/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
455 494
456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 495#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 496#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
458 497
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 498#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 499#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
461 500
501/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
502/* ECB.H BEGIN */
503/*
504 * libecb - http://software.schmorp.de/pkg/libecb
505 *
506 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
507 * Copyright (©) 2011 Emanuele Giaquinta
508 * All rights reserved.
509 *
510 * Redistribution and use in source and binary forms, with or without modifica-
511 * tion, are permitted provided that the following conditions are met:
512 *
513 * 1. Redistributions of source code must retain the above copyright notice,
514 * this list of conditions and the following disclaimer.
515 *
516 * 2. Redistributions in binary form must reproduce the above copyright
517 * notice, this list of conditions and the following disclaimer in the
518 * documentation and/or other materials provided with the distribution.
519 *
520 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
521 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
522 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
523 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
524 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
525 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
526 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
527 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
528 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
529 * OF THE POSSIBILITY OF SUCH DAMAGE.
530 *
531 * Alternatively, the contents of this file may be used under the terms of
532 * the GNU General Public License ("GPL") version 2 or any later version,
533 * in which case the provisions of the GPL are applicable instead of
534 * the above. If you wish to allow the use of your version of this file
535 * only under the terms of the GPL and not to allow others to use your
536 * version of this file under the BSD license, indicate your decision
537 * by deleting the provisions above and replace them with the notice
538 * and other provisions required by the GPL. If you do not delete the
539 * provisions above, a recipient may use your version of this file under
540 * either the BSD or the GPL.
541 */
542
543#ifndef ECB_H
544#define ECB_H
545
546/* 16 bits major, 16 bits minor */
547#define ECB_VERSION 0x00010005
548
549#ifdef _WIN32
550 typedef signed char int8_t;
551 typedef unsigned char uint8_t;
552 typedef signed short int16_t;
553 typedef unsigned short uint16_t;
554 typedef signed int int32_t;
555 typedef unsigned int uint32_t;
462#if __GNUC__ >= 4 556 #if __GNUC__
557 typedef signed long long int64_t;
558 typedef unsigned long long uint64_t;
559 #else /* _MSC_VER || __BORLANDC__ */
560 typedef signed __int64 int64_t;
561 typedef unsigned __int64 uint64_t;
562 #endif
563 #ifdef _WIN64
564 #define ECB_PTRSIZE 8
565 typedef uint64_t uintptr_t;
566 typedef int64_t intptr_t;
567 #else
568 #define ECB_PTRSIZE 4
569 typedef uint32_t uintptr_t;
570 typedef int32_t intptr_t;
571 #endif
572#else
573 #include <inttypes.h>
574 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
575 #define ECB_PTRSIZE 8
576 #else
577 #define ECB_PTRSIZE 4
578 #endif
579#endif
580
581#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
582#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
583
584/* work around x32 idiocy by defining proper macros */
585#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
586 #if _ILP32
587 #define ECB_AMD64_X32 1
588 #else
589 #define ECB_AMD64 1
590 #endif
591#endif
592
593/* many compilers define _GNUC_ to some versions but then only implement
594 * what their idiot authors think are the "more important" extensions,
595 * causing enormous grief in return for some better fake benchmark numbers.
596 * or so.
597 * we try to detect these and simply assume they are not gcc - if they have
598 * an issue with that they should have done it right in the first place.
599 */
600#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
601 #define ECB_GCC_VERSION(major,minor) 0
602#else
603 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
604#endif
605
606#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
607
608#if __clang__ && defined __has_builtin
609 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
610#else
611 #define ECB_CLANG_BUILTIN(x) 0
612#endif
613
614#if __clang__ && defined __has_extension
615 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
616#else
617 #define ECB_CLANG_EXTENSION(x) 0
618#endif
619
620#define ECB_CPP (__cplusplus+0)
621#define ECB_CPP11 (__cplusplus >= 201103L)
622#define ECB_CPP14 (__cplusplus >= 201402L)
623#define ECB_CPP17 (__cplusplus >= 201703L)
624
625#if ECB_CPP
626 #define ECB_C 0
627 #define ECB_STDC_VERSION 0
628#else
629 #define ECB_C 1
630 #define ECB_STDC_VERSION __STDC_VERSION__
631#endif
632
633#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
634#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
635#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
636
637#if ECB_CPP
638 #define ECB_EXTERN_C extern "C"
639 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
640 #define ECB_EXTERN_C_END }
641#else
642 #define ECB_EXTERN_C extern
643 #define ECB_EXTERN_C_BEG
644 #define ECB_EXTERN_C_END
645#endif
646
647/*****************************************************************************/
648
649/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
650/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
651
652#if ECB_NO_THREADS
653 #define ECB_NO_SMP 1
654#endif
655
656#if ECB_NO_SMP
657 #define ECB_MEMORY_FENCE do { } while (0)
658#endif
659
660/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
661#if __xlC__ && ECB_CPP
662 #include <builtins.h>
663#endif
664
665#if 1400 <= _MSC_VER
666 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #if __i386 || __i386__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
673 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
674 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
675 #elif ECB_GCC_AMD64
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
677 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
679 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
681 #elif defined __ARM_ARCH_2__ \
682 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
683 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
684 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
685 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
686 || defined __ARM_ARCH_5TEJ__
687 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
688 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
689 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
690 || defined __ARM_ARCH_6T2__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
692 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
693 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
695 #elif __aarch64__
696 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
697 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
701 #elif defined __s390__ || defined __s390x__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
703 #elif defined __mips__
704 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
705 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
707 #elif defined __alpha__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
709 #elif defined __hppa__
710 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
711 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
712 #elif defined __ia64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
714 #elif defined __m68k__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
716 #elif defined __m88k__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
718 #elif defined __sh__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
720 #endif
721 #endif
722#endif
723
724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(4,7)
726 /* see comment below (stdatomic.h) about the C11 memory model. */
727 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
728 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
729 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
730
731 #elif ECB_CLANG_EXTENSION(c_atomic)
732 /* see comment below (stdatomic.h) about the C11 memory model. */
733 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
734 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
735 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
736
737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
738 #define ECB_MEMORY_FENCE __sync_synchronize ()
739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
740 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
741 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
742 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
743 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
744 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
748 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
750 #elif defined _WIN32
751 #include <WinNT.h>
752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
754 #include <mbarrier.h>
755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
757 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
758 #elif __xlC__
759 #define ECB_MEMORY_FENCE __sync ()
760 #endif
761#endif
762
763#ifndef ECB_MEMORY_FENCE
764 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
765 /* we assume that these memory fences work on all variables/all memory accesses, */
766 /* not just C11 atomics and atomic accesses */
767 #include <stdatomic.h>
768 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
769 /* any fence other than seq_cst, which isn't very efficient for us. */
770 /* Why that is, we don't know - either the C11 memory model is quite useless */
771 /* for most usages, or gcc and clang have a bug */
772 /* I *currently* lean towards the latter, and inefficiently implement */
773 /* all three of ecb's fences as a seq_cst fence */
774 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
775 /* for all __atomic_thread_fence's except seq_cst */
776 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if !ECB_AVOID_PTHREADS
782 /*
783 * if you get undefined symbol references to pthread_mutex_lock,
784 * or failure to find pthread.h, then you should implement
785 * the ECB_MEMORY_FENCE operations for your cpu/compiler
786 * OR provide pthread.h and link against the posix thread library
787 * of your system.
788 */
789 #include <pthread.h>
790 #define ECB_NEEDS_PTHREADS 1
791 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
792
793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
794 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
795 #endif
796#endif
797
798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
800#endif
801
802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
804#endif
805
806/*****************************************************************************/
807
808#if ECB_CPP
809 #define ecb_inline static inline
810#elif ECB_GCC_VERSION(2,5)
811 #define ecb_inline static __inline__
812#elif ECB_C99
813 #define ecb_inline static inline
814#else
815 #define ecb_inline static
816#endif
817
818#if ECB_GCC_VERSION(3,3)
819 #define ecb_restrict __restrict__
820#elif ECB_C99
821 #define ecb_restrict restrict
822#else
823 #define ecb_restrict
824#endif
825
826typedef int ecb_bool;
827
828#define ECB_CONCAT_(a, b) a ## b
829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
830#define ECB_STRINGIFY_(a) # a
831#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
832#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
833
834#define ecb_function_ ecb_inline
835
836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
837 #define ecb_attribute(attrlist) __attribute__ (attrlist)
838#else
839 #define ecb_attribute(attrlist)
840#endif
841
842#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
843 #define ecb_is_constant(expr) __builtin_constant_p (expr)
844#else
845 /* possible C11 impl for integral types
846 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
847 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
848
849 #define ecb_is_constant(expr) 0
850#endif
851
852#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
463# define expect(expr,value) __builtin_expect ((expr),(value)) 853 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
464# define noinline __attribute__ ((noinline))
465#else 854#else
466# define expect(expr,value) (expr) 855 #define ecb_expect(expr,value) (expr)
467# define noinline
468# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
469# define inline
470# endif 856#endif
471#endif
472 857
858#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
860#else
861 #define ecb_prefetch(addr,rw,locality)
862#endif
863
864/* no emulation for ecb_decltype */
865#if ECB_CPP11
866 // older implementations might have problems with decltype(x)::type, work around it
867 template<class T> struct ecb_decltype_t { typedef T type; };
868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
870 #define ecb_decltype(x) __typeof__ (x)
871#endif
872
873#if _MSC_VER >= 1300
874 #define ecb_deprecated __declspec (deprecated)
875#else
876 #define ecb_deprecated ecb_attribute ((__deprecated__))
877#endif
878
879#if _MSC_VER >= 1500
880 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
881#elif ECB_GCC_VERSION(4,5)
882 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
883#else
884 #define ecb_deprecated_message(msg) ecb_deprecated
885#endif
886
887#if _MSC_VER >= 1400
888 #define ecb_noinline __declspec (noinline)
889#else
890 #define ecb_noinline ecb_attribute ((__noinline__))
891#endif
892
893#define ecb_unused ecb_attribute ((__unused__))
894#define ecb_const ecb_attribute ((__const__))
895#define ecb_pure ecb_attribute ((__pure__))
896
897#if ECB_C11 || __IBMC_NORETURN
898 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
899 #define ecb_noreturn _Noreturn
900#elif ECB_CPP11
901 #define ecb_noreturn [[noreturn]]
902#elif _MSC_VER >= 1200
903 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
904 #define ecb_noreturn __declspec (noreturn)
905#else
906 #define ecb_noreturn ecb_attribute ((__noreturn__))
907#endif
908
909#if ECB_GCC_VERSION(4,3)
910 #define ecb_artificial ecb_attribute ((__artificial__))
911 #define ecb_hot ecb_attribute ((__hot__))
912 #define ecb_cold ecb_attribute ((__cold__))
913#else
914 #define ecb_artificial
915 #define ecb_hot
916 #define ecb_cold
917#endif
918
919/* put around conditional expressions if you are very sure that the */
920/* expression is mostly true or mostly false. note that these return */
921/* booleans, not the expression. */
473#define expect_false(expr) expect ((expr) != 0, 0) 922#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
474#define expect_true(expr) expect ((expr) != 0, 1) 923#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
924/* for compatibility to the rest of the world */
925#define ecb_likely(expr) ecb_expect_true (expr)
926#define ecb_unlikely(expr) ecb_expect_false (expr)
927
928/* count trailing zero bits and count # of one bits */
929#if ECB_GCC_VERSION(3,4) \
930 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
931 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
932 && ECB_CLANG_BUILTIN(__builtin_popcount))
933 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
936 #define ecb_ctz32(x) __builtin_ctz (x)
937 #define ecb_ctz64(x) __builtin_ctzll (x)
938 #define ecb_popcount32(x) __builtin_popcount (x)
939 /* no popcountll */
940#else
941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz32 (uint32_t x)
944 {
945#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
946 unsigned long r;
947 _BitScanForward (&r, x);
948 return (int)r;
949#else
950 int r = 0;
951
952 x &= ~x + 1; /* this isolates the lowest bit */
953
954#if ECB_branchless_on_i386
955 r += !!(x & 0xaaaaaaaa) << 0;
956 r += !!(x & 0xcccccccc) << 1;
957 r += !!(x & 0xf0f0f0f0) << 2;
958 r += !!(x & 0xff00ff00) << 3;
959 r += !!(x & 0xffff0000) << 4;
960#else
961 if (x & 0xaaaaaaaa) r += 1;
962 if (x & 0xcccccccc) r += 2;
963 if (x & 0xf0f0f0f0) r += 4;
964 if (x & 0xff00ff00) r += 8;
965 if (x & 0xffff0000) r += 16;
966#endif
967
968 return r;
969#endif
970 }
971
972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
973 ecb_function_ ecb_const int
974 ecb_ctz64 (uint64_t x)
975 {
976#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
977 unsigned long r;
978 _BitScanForward64 (&r, x);
979 return (int)r;
980#else
981 int shift = x & 0xffffffff ? 0 : 32;
982 return ecb_ctz32 (x >> shift) + shift;
983#endif
984 }
985
986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
987 ecb_function_ ecb_const int
988 ecb_popcount32 (uint32_t x)
989 {
990 x -= (x >> 1) & 0x55555555;
991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
992 x = ((x >> 4) + x) & 0x0f0f0f0f;
993 x *= 0x01010101;
994
995 return x >> 24;
996 }
997
998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1000 {
1001#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1002 unsigned long r;
1003 _BitScanReverse (&r, x);
1004 return (int)r;
1005#else
1006 int r = 0;
1007
1008 if (x >> 16) { x >>= 16; r += 16; }
1009 if (x >> 8) { x >>= 8; r += 8; }
1010 if (x >> 4) { x >>= 4; r += 4; }
1011 if (x >> 2) { x >>= 2; r += 2; }
1012 if (x >> 1) { r += 1; }
1013
1014 return r;
1015#endif
1016 }
1017
1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1020 {
1021#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1022 unsigned long r;
1023 _BitScanReverse64 (&r, x);
1024 return (int)r;
1025#else
1026 int r = 0;
1027
1028 if (x >> 32) { x >>= 32; r += 32; }
1029
1030 return r + ecb_ld32 (x);
1031#endif
1032 }
1033#endif
1034
1035ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1036ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1037ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1038ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1039
1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1042{
1043 return ( (x * 0x0802U & 0x22110U)
1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1045}
1046
1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1049{
1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1053 x = ( x >> 8 ) | ( x << 8);
1054
1055 return x;
1056}
1057
1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1060{
1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1065 x = ( x >> 16 ) | ( x << 16);
1066
1067 return x;
1068}
1069
1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
1071/* so for this version we are lazy */
1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1073ecb_function_ ecb_const int
1074ecb_popcount64 (uint64_t x)
1075{
1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1077}
1078
1079ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1080ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1081ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1082ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1083ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1084ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1085ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1086ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1087
1088ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1089ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1090ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1091ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1092ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1093ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1094ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1095ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1096
1097#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1098 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1099 #define ecb_bswap16(x) __builtin_bswap16 (x)
1100 #else
1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
1104 #define ecb_bswap64(x) __builtin_bswap64 (x)
1105#elif _MSC_VER
1106 #include <stdlib.h>
1107 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1108 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1109 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1110#else
1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1112 ecb_function_ ecb_const uint16_t
1113 ecb_bswap16 (uint16_t x)
1114 {
1115 return ecb_rotl16 (x, 8);
1116 }
1117
1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1119 ecb_function_ ecb_const uint32_t
1120 ecb_bswap32 (uint32_t x)
1121 {
1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1123 }
1124
1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1126 ecb_function_ ecb_const uint64_t
1127 ecb_bswap64 (uint64_t x)
1128 {
1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1130 }
1131#endif
1132
1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1134 #define ecb_unreachable() __builtin_unreachable ()
1135#else
1136 /* this seems to work fine, but gcc always emits a warning for it :/ */
1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1139#endif
1140
1141/* try to tell the compiler that some condition is definitely true */
1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1143
1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1145ecb_inline ecb_const uint32_t
1146ecb_byteorder_helper (void)
1147{
1148 /* the union code still generates code under pressure in gcc, */
1149 /* but less than using pointers, and always seems to */
1150 /* successfully return a constant. */
1151 /* the reason why we have this horrible preprocessor mess */
1152 /* is to avoid it in all cases, at least on common architectures */
1153 /* or when using a recent enough gcc version (>= 4.6) */
1154#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1155 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1156 #define ECB_LITTLE_ENDIAN 1
1157 return 0x44332211;
1158#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1159 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1160 #define ECB_BIG_ENDIAN 1
1161 return 0x11223344;
1162#else
1163 union
1164 {
1165 uint8_t c[4];
1166 uint32_t u;
1167 } u = { 0x11, 0x22, 0x33, 0x44 };
1168 return u.u;
1169#endif
1170}
1171
1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1173ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1175ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1176
1177#if ECB_GCC_VERSION(3,0) || ECB_C99
1178 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1179#else
1180 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1181#endif
1182
1183#if ECB_CPP
1184 template<typename T>
1185 static inline T ecb_div_rd (T val, T div)
1186 {
1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1188 }
1189 template<typename T>
1190 static inline T ecb_div_ru (T val, T div)
1191 {
1192 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1193 }
1194#else
1195 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1196 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1197#endif
1198
1199#if ecb_cplusplus_does_not_suck
1200 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1201 template<typename T, int N>
1202 static inline int ecb_array_length (const T (&arr)[N])
1203 {
1204 return N;
1205 }
1206#else
1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1208#endif
1209
1210ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1211ecb_function_ ecb_const uint32_t
1212ecb_binary16_to_binary32 (uint32_t x)
1213{
1214 unsigned int s = (x & 0x8000) << (31 - 15);
1215 int e = (x >> 10) & 0x001f;
1216 unsigned int m = x & 0x03ff;
1217
1218 if (ecb_expect_false (e == 31))
1219 /* infinity or NaN */
1220 e = 255 - (127 - 15);
1221 else if (ecb_expect_false (!e))
1222 {
1223 if (ecb_expect_true (!m))
1224 /* zero, handled by code below by forcing e to 0 */
1225 e = 0 - (127 - 15);
1226 else
1227 {
1228 /* subnormal, renormalise */
1229 unsigned int s = 10 - ecb_ld32 (m);
1230
1231 m = (m << s) & 0x3ff; /* mask implicit bit */
1232 e -= s - 1;
1233 }
1234 }
1235
1236 /* e and m now are normalised, or zero, (or inf or nan) */
1237 e += 127 - 15;
1238
1239 return s | (e << 23) | (m << (23 - 10));
1240}
1241
1242ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1243ecb_function_ ecb_const uint16_t
1244ecb_binary32_to_binary16 (uint32_t x)
1245{
1246 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1247 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1248 unsigned int m = x & 0x007fffff;
1249
1250 x &= 0x7fffffff;
1251
1252 /* if it's within range of binary16 normals, use fast path */
1253 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1254 {
1255 /* mantissa round-to-even */
1256 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1257
1258 /* handle overflow */
1259 if (ecb_expect_false (m >= 0x00800000))
1260 {
1261 m >>= 1;
1262 e += 1;
1263 }
1264
1265 return s | (e << 10) | (m >> (23 - 10));
1266 }
1267
1268 /* handle large numbers and infinity */
1269 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1270 return s | 0x7c00;
1271
1272 /* handle zero, subnormals and small numbers */
1273 if (ecb_expect_true (x < 0x38800000))
1274 {
1275 /* zero */
1276 if (ecb_expect_true (!x))
1277 return s;
1278
1279 /* handle subnormals */
1280
1281 /* too small, will be zero */
1282 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1283 return s;
1284
1285 m |= 0x00800000; /* make implicit bit explicit */
1286
1287 /* very tricky - we need to round to the nearest e (+10) bit value */
1288 {
1289 unsigned int bits = 14 - e;
1290 unsigned int half = (1 << (bits - 1)) - 1;
1291 unsigned int even = (m >> bits) & 1;
1292
1293 /* if this overflows, we will end up with a normalised number */
1294 m = (m + half + even) >> bits;
1295 }
1296
1297 return s | m;
1298 }
1299
1300 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1301 m >>= 13;
1302
1303 return s | 0x7c00 | m | !m;
1304}
1305
1306/*******************************************************************************/
1307/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1308
1309/* basically, everything uses "ieee pure-endian" floating point numbers */
1310/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1311#if 0 \
1312 || __i386 || __i386__ \
1313 || ECB_GCC_AMD64 \
1314 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1315 || defined __s390__ || defined __s390x__ \
1316 || defined __mips__ \
1317 || defined __alpha__ \
1318 || defined __hppa__ \
1319 || defined __ia64__ \
1320 || defined __m68k__ \
1321 || defined __m88k__ \
1322 || defined __sh__ \
1323 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1324 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1325 || defined __aarch64__
1326 #define ECB_STDFP 1
1327 #include <string.h> /* for memcpy */
1328#else
1329 #define ECB_STDFP 0
1330#endif
1331
1332#ifndef ECB_NO_LIBM
1333
1334 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1335
1336 /* only the oldest of old doesn't have this one. solaris. */
1337 #ifdef INFINITY
1338 #define ECB_INFINITY INFINITY
1339 #else
1340 #define ECB_INFINITY HUGE_VAL
1341 #endif
1342
1343 #ifdef NAN
1344 #define ECB_NAN NAN
1345 #else
1346 #define ECB_NAN ECB_INFINITY
1347 #endif
1348
1349 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1350 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1351 #define ecb_frexpf(x,e) frexpf ((x), (e))
1352 #else
1353 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1354 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1355 #endif
1356
1357 /* convert a float to ieee single/binary32 */
1358 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1359 ecb_function_ ecb_const uint32_t
1360 ecb_float_to_binary32 (float x)
1361 {
1362 uint32_t r;
1363
1364 #if ECB_STDFP
1365 memcpy (&r, &x, 4);
1366 #else
1367 /* slow emulation, works for anything but -0 */
1368 uint32_t m;
1369 int e;
1370
1371 if (x == 0e0f ) return 0x00000000U;
1372 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1373 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1374 if (x != x ) return 0x7fbfffffU;
1375
1376 m = ecb_frexpf (x, &e) * 0x1000000U;
1377
1378 r = m & 0x80000000U;
1379
1380 if (r)
1381 m = -m;
1382
1383 if (e <= -126)
1384 {
1385 m &= 0xffffffU;
1386 m >>= (-125 - e);
1387 e = -126;
1388 }
1389
1390 r |= (e + 126) << 23;
1391 r |= m & 0x7fffffU;
1392 #endif
1393
1394 return r;
1395 }
1396
1397 /* converts an ieee single/binary32 to a float */
1398 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1399 ecb_function_ ecb_const float
1400 ecb_binary32_to_float (uint32_t x)
1401 {
1402 float r;
1403
1404 #if ECB_STDFP
1405 memcpy (&r, &x, 4);
1406 #else
1407 /* emulation, only works for normals and subnormals and +0 */
1408 int neg = x >> 31;
1409 int e = (x >> 23) & 0xffU;
1410
1411 x &= 0x7fffffU;
1412
1413 if (e)
1414 x |= 0x800000U;
1415 else
1416 e = 1;
1417
1418 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1419 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1420
1421 r = neg ? -r : r;
1422 #endif
1423
1424 return r;
1425 }
1426
1427 /* convert a double to ieee double/binary64 */
1428 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1429 ecb_function_ ecb_const uint64_t
1430 ecb_double_to_binary64 (double x)
1431 {
1432 uint64_t r;
1433
1434 #if ECB_STDFP
1435 memcpy (&r, &x, 8);
1436 #else
1437 /* slow emulation, works for anything but -0 */
1438 uint64_t m;
1439 int e;
1440
1441 if (x == 0e0 ) return 0x0000000000000000U;
1442 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1443 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1444 if (x != x ) return 0X7ff7ffffffffffffU;
1445
1446 m = frexp (x, &e) * 0x20000000000000U;
1447
1448 r = m & 0x8000000000000000;;
1449
1450 if (r)
1451 m = -m;
1452
1453 if (e <= -1022)
1454 {
1455 m &= 0x1fffffffffffffU;
1456 m >>= (-1021 - e);
1457 e = -1022;
1458 }
1459
1460 r |= ((uint64_t)(e + 1022)) << 52;
1461 r |= m & 0xfffffffffffffU;
1462 #endif
1463
1464 return r;
1465 }
1466
1467 /* converts an ieee double/binary64 to a double */
1468 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1469 ecb_function_ ecb_const double
1470 ecb_binary64_to_double (uint64_t x)
1471 {
1472 double r;
1473
1474 #if ECB_STDFP
1475 memcpy (&r, &x, 8);
1476 #else
1477 /* emulation, only works for normals and subnormals and +0 */
1478 int neg = x >> 63;
1479 int e = (x >> 52) & 0x7ffU;
1480
1481 x &= 0xfffffffffffffU;
1482
1483 if (e)
1484 x |= 0x10000000000000U;
1485 else
1486 e = 1;
1487
1488 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1489 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1490
1491 r = neg ? -r : r;
1492 #endif
1493
1494 return r;
1495 }
1496
1497 /* convert a float to ieee half/binary16 */
1498 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1499 ecb_function_ ecb_const uint16_t
1500 ecb_float_to_binary16 (float x)
1501 {
1502 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1503 }
1504
1505 /* convert an ieee half/binary16 to float */
1506 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1507 ecb_function_ ecb_const float
1508 ecb_binary16_to_float (uint16_t x)
1509 {
1510 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1511 }
1512
1513#endif
1514
1515#endif
1516
1517/* ECB.H END */
1518
1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1520/* if your architecture doesn't need memory fences, e.g. because it is
1521 * single-cpu/core, or if you use libev in a project that doesn't use libev
1522 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1523 * libev, in which cases the memory fences become nops.
1524 * alternatively, you can remove this #error and link against libpthread,
1525 * which will then provide the memory fences.
1526 */
1527# error "memory fences not defined for your architecture, please report"
1528#endif
1529
1530#ifndef ECB_MEMORY_FENCE
1531# define ECB_MEMORY_FENCE do { } while (0)
1532# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1533# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1534#endif
1535
1536#define expect_false(cond) ecb_expect_false (cond)
1537#define expect_true(cond) ecb_expect_true (cond)
1538#define noinline ecb_noinline
1539
475#define inline_size static inline 1540#define inline_size ecb_inline
476 1541
477#if EV_FEATURE_CODE 1542#if EV_FEATURE_CODE
478# define inline_speed static inline 1543# define inline_speed ecb_inline
479#else 1544#else
480# define inline_speed static noinline 1545# define inline_speed noinline static
481#endif 1546#endif
482 1547
483#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
484 1549
485#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
486# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
487#else 1552#else
488# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
489#endif 1554#endif
490 1555
491#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
492#define EMPTY2(a,b) /* used to suppress some warnings */
493 1557
494typedef ev_watcher *W; 1558typedef ev_watcher *W;
495typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
496typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
497 1561
… …
522# include "ev_win32.c" 1586# include "ev_win32.c"
523#endif 1587#endif
524 1588
525/*****************************************************************************/ 1589/*****************************************************************************/
526 1590
1591/* define a suitable floor function (only used by periodics atm) */
1592
1593#if EV_USE_FLOOR
1594# include <math.h>
1595# define ev_floor(v) floor (v)
1596#else
1597
1598#include <float.h>
1599
1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
1602static ev_tstamp
1603ev_floor (ev_tstamp v)
1604{
1605 /* the choice of shift factor is not terribly important */
1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1608#else
1609 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1610#endif
1611
1612 /* argument too large for an unsigned long? */
1613 if (expect_false (v >= shift))
1614 {
1615 ev_tstamp f;
1616
1617 if (v == v - 1.)
1618 return v; /* very large number */
1619
1620 f = shift * ev_floor (v * (1. / shift));
1621 return f + ev_floor (v - f);
1622 }
1623
1624 /* special treatment for negative args? */
1625 if (expect_false (v < 0.))
1626 {
1627 ev_tstamp f = -ev_floor (-v);
1628
1629 return f - (f == v ? 0 : 1);
1630 }
1631
1632 /* fits into an unsigned long */
1633 return (unsigned long)v;
1634}
1635
1636#endif
1637
1638/*****************************************************************************/
1639
527#ifdef __linux 1640#ifdef __linux
528# include <sys/utsname.h> 1641# include <sys/utsname.h>
529#endif 1642#endif
530 1643
1644noinline ecb_cold
531static unsigned int noinline 1645static unsigned int
532ev_linux_version (void) 1646ev_linux_version (void)
533{ 1647{
534#ifdef __linux 1648#ifdef __linux
535 unsigned int v = 0; 1649 unsigned int v = 0;
536 struct utsname buf; 1650 struct utsname buf;
… …
565} 1679}
566 1680
567/*****************************************************************************/ 1681/*****************************************************************************/
568 1682
569#if EV_AVOID_STDIO 1683#if EV_AVOID_STDIO
570static void noinline 1684noinline ecb_cold
1685static void
571ev_printerr (const char *msg) 1686ev_printerr (const char *msg)
572{ 1687{
573 write (STDERR_FILENO, msg, strlen (msg)); 1688 write (STDERR_FILENO, msg, strlen (msg));
574} 1689}
575#endif 1690#endif
576 1691
577static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
578 1693
1694ecb_cold
579void 1695void
580ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
581{ 1697{
582 syserr_cb = cb; 1698 syserr_cb = cb;
583} 1699}
584 1700
585static void noinline 1701noinline ecb_cold
1702static void
586ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
587{ 1704{
588 if (!msg) 1705 if (!msg)
589 msg = "(libev) system error"; 1706 msg = "(libev) system error";
590 1707
591 if (syserr_cb) 1708 if (syserr_cb)
592 syserr_cb (msg); 1709 syserr_cb (msg);
593 else 1710 else
594 { 1711 {
595#if EV_AVOID_STDIO 1712#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg); 1713 ev_printerr (msg);
599 ev_printerr (": "); 1714 ev_printerr (": ");
600 ev_printerr (err); 1715 ev_printerr (strerror (errno));
601 ev_printerr ("\n"); 1716 ev_printerr ("\n");
602#else 1717#else
603 perror (msg); 1718 perror (msg);
604#endif 1719#endif
605 abort (); 1720 abort ();
606 } 1721 }
607} 1722}
608 1723
609static void * 1724static void *
610ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
611{ 1726{
612#if __GLIBC__
613 return realloc (ptr, size);
614#else
615 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
616 * implement realloc (x, 0) (as required by both ansi c-89 and 1728 * implement realloc (x, 0) (as required by both ansi c-89 and
617 * the single unix specification, so work around them here. 1729 * the single unix specification, so work around them here.
1730 * recently, also (at least) fedora and debian started breaking it,
1731 * despite documenting it otherwise.
618 */ 1732 */
619 1733
620 if (size) 1734 if (size)
621 return realloc (ptr, size); 1735 return realloc (ptr, size);
622 1736
623 free (ptr); 1737 free (ptr);
624 return 0; 1738 return 0;
625#endif
626} 1739}
627 1740
628static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
629 1742
1743ecb_cold
630void 1744void
631ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
632{ 1746{
633 alloc = cb; 1747 alloc = cb;
634} 1748}
635 1749
636inline_speed void * 1750inline_speed void *
… …
639 ptr = alloc (ptr, size); 1753 ptr = alloc (ptr, size);
640 1754
641 if (!ptr && size) 1755 if (!ptr && size)
642 { 1756 {
643#if EV_AVOID_STDIO 1757#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1758 ev_printerr ("(libev) memory allocation failed, aborting.\n");
645#else 1759#else
646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1760 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
647#endif 1761#endif
648 abort (); 1762 abort ();
649 } 1763 }
650 1764
651 return ptr; 1765 return ptr;
… …
663typedef struct 1777typedef struct
664{ 1778{
665 WL head; 1779 WL head;
666 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
667 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1781 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1782 unsigned char emask; /* some backends store the actual kernel mask in here */
669 unsigned char unused; 1783 unsigned char unused;
670#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif 1786#endif
673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
724 #undef VAR 1838 #undef VAR
725 }; 1839 };
726 #include "ev_wrap.h" 1840 #include "ev_wrap.h"
727 1841
728 static struct ev_loop default_loop_struct; 1842 static struct ev_loop default_loop_struct;
729 struct ev_loop *ev_default_loop_ptr; 1843 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
730 1844
731#else 1845#else
732 1846
733 ev_tstamp ev_rt_now; 1847 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
734 #define VAR(name,decl) static decl; 1848 #define VAR(name,decl) static decl;
735 #include "ev_vars.h" 1849 #include "ev_vars.h"
736 #undef VAR 1850 #undef VAR
737 1851
738 static int ev_default_loop_ptr; 1852 static int ev_default_loop_ptr;
… …
753 1867
754/*****************************************************************************/ 1868/*****************************************************************************/
755 1869
756#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
757ev_tstamp 1871ev_tstamp
758ev_time (void) 1872ev_time (void) EV_NOEXCEPT
759{ 1873{
760#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
761 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
762 { 1876 {
763 struct timespec ts; 1877 struct timespec ts;
… …
787 return ev_time (); 1901 return ev_time ();
788} 1902}
789 1903
790#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
791ev_tstamp 1905ev_tstamp
792ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
793{ 1907{
794 return ev_rt_now; 1908 return ev_rt_now;
795} 1909}
796#endif 1910#endif
797 1911
798void 1912void
799ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
800{ 1914{
801 if (delay > 0.) 1915 if (delay > 0.)
802 { 1916 {
803#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
804 struct timespec ts; 1918 struct timespec ts;
805 1919
806 EV_TS_SET (ts, delay); 1920 EV_TS_SET (ts, delay);
807 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
808#elif defined(_WIN32) 1922#elif defined _WIN32
1923 /* maybe this should round up, as ms is very low resolution */
1924 /* compared to select (µs) or nanosleep (ns) */
809 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
810#else 1926#else
811 struct timeval tv; 1927 struct timeval tv;
812 1928
813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1929 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
832 1948
833 do 1949 do
834 ncur <<= 1; 1950 ncur <<= 1;
835 while (cnt > ncur); 1951 while (cnt > ncur);
836 1952
837 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1953 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
838 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1954 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
839 { 1955 {
840 ncur *= elem; 1956 ncur *= elem;
841 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1957 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
842 ncur = ncur - sizeof (void *) * 4; 1958 ncur = ncur - sizeof (void *) * 4;
… …
844 } 1960 }
845 1961
846 return ncur; 1962 return ncur;
847} 1963}
848 1964
849static noinline void * 1965noinline ecb_cold
1966static void *
850array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
851{ 1968{
852 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
853 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
854} 1971}
855 1972
1973#define array_needsize_noinit(base,count)
1974
856#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
857 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
858 1977
859#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
860 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
861 { \ 1980 { \
862 int ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
863 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
864 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
865 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
866 } 1985 }
867 1986
… …
879 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1998 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
880 1999
881/*****************************************************************************/ 2000/*****************************************************************************/
882 2001
883/* dummy callback for pending events */ 2002/* dummy callback for pending events */
884static void noinline 2003noinline
2004static void
885pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
886{ 2006{
887} 2007}
888 2008
889void noinline 2009noinline
2010void
890ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
891{ 2012{
892 W w_ = (W)w; 2013 W w_ = (W)w;
893 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
894 2015
895 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
896 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
897 else 2018 else
898 { 2019 {
899 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
900 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
901 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
902 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
903 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
904} 2027}
905 2028
906inline_speed void 2029inline_speed void
907feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
908{ 2031{
909 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
910 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
911} 2034}
912 2035
913inline_size void 2036inline_size void
914feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
954 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
955 fd_event_nocheck (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
956} 2079}
957 2080
958void 2081void
959ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
960{ 2083{
961 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
962 fd_event_nocheck (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
963} 2086}
964 2087
… …
967inline_size void 2090inline_size void
968fd_reify (EV_P) 2091fd_reify (EV_P)
969{ 2092{
970 int i; 2093 int i;
971 2094
2095#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2096 for (i = 0; i < fdchangecnt; ++i)
2097 {
2098 int fd = fdchanges [i];
2099 ANFD *anfd = anfds + fd;
2100
2101 if (anfd->reify & EV__IOFDSET && anfd->head)
2102 {
2103 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2104
2105 if (handle != anfd->handle)
2106 {
2107 unsigned long arg;
2108
2109 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2110
2111 /* handle changed, but fd didn't - we need to do it in two steps */
2112 backend_modify (EV_A_ fd, anfd->events, 0);
2113 anfd->events = 0;
2114 anfd->handle = handle;
2115 }
2116 }
2117 }
2118#endif
2119
972 for (i = 0; i < fdchangecnt; ++i) 2120 for (i = 0; i < fdchangecnt; ++i)
973 { 2121 {
974 int fd = fdchanges [i]; 2122 int fd = fdchanges [i];
975 ANFD *anfd = anfds + fd; 2123 ANFD *anfd = anfds + fd;
976 ev_io *w; 2124 ev_io *w;
… …
978 unsigned char o_events = anfd->events; 2126 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify; 2127 unsigned char o_reify = anfd->reify;
980 2128
981 anfd->reify = 0; 2129 anfd->reify = 0;
982 2130
983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
984 if (o_reify & EV__IOFDSET)
985 {
986 unsigned long arg;
987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
990 }
991#endif
992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2131 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
994 { 2132 {
995 anfd->events = 0; 2133 anfd->events = 0;
996 2134
997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2135 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1007 2145
1008 fdchangecnt = 0; 2146 fdchangecnt = 0;
1009} 2147}
1010 2148
1011/* something about the given fd changed */ 2149/* something about the given fd changed */
1012inline_size void 2150inline_size
2151void
1013fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
1014{ 2153{
1015 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
1016 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
1017 2156
1018 if (expect_true (!reify)) 2157 if (expect_true (!reify))
1019 { 2158 {
1020 ++fdchangecnt; 2159 ++fdchangecnt;
1021 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1022 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
1023 } 2162 }
1024} 2163}
1025 2164
1026/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2165/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1027inline_speed void 2166inline_speed ecb_cold void
1028fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
1029{ 2168{
1030 ev_io *w; 2169 ev_io *w;
1031 2170
1032 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
1035 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2174 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1036 } 2175 }
1037} 2176}
1038 2177
1039/* check whether the given fd is actually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
1040inline_size int 2179inline_size ecb_cold int
1041fd_valid (int fd) 2180fd_valid (int fd)
1042{ 2181{
1043#ifdef _WIN32 2182#ifdef _WIN32
1044 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1045#else 2184#else
1046 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
1047#endif 2186#endif
1048} 2187}
1049 2188
1050/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
1051static void noinline 2190noinline ecb_cold
2191static void
1052fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
1053{ 2193{
1054 int fd; 2194 int fd;
1055 2195
1056 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
1058 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
1059 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
1060} 2200}
1061 2201
1062/* called on ENOMEM in select/poll to kill some fds and retry */ 2202/* called on ENOMEM in select/poll to kill some fds and retry */
1063static void noinline 2203noinline ecb_cold
2204static void
1064fd_enomem (EV_P) 2205fd_enomem (EV_P)
1065{ 2206{
1066 int fd; 2207 int fd;
1067 2208
1068 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1072 break; 2213 break;
1073 } 2214 }
1074} 2215}
1075 2216
1076/* usually called after fork if backend needs to re-arm all fds from scratch */ 2217/* usually called after fork if backend needs to re-arm all fds from scratch */
1077static void noinline 2218noinline
2219static void
1078fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1079{ 2221{
1080 int fd; 2222 int fd;
1081 2223
1082 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1263 2405
1264/*****************************************************************************/ 2406/*****************************************************************************/
1265 2407
1266#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1267 2409
1268static void noinline 2410noinline ecb_cold
2411static void
1269evpipe_init (EV_P) 2412evpipe_init (EV_P)
1270{ 2413{
1271 if (!ev_is_active (&pipe_w)) 2414 if (!ev_is_active (&pipe_w))
1272 { 2415 {
2416 int fds [2];
2417
1273# if EV_USE_EVENTFD 2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
1274 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1275 if (evfd < 0 && errno == EINVAL) 2421 if (fds [1] < 0 && errno == EINVAL)
1276 evfd = eventfd (0, 0); 2422 fds [1] = eventfd (0, 0);
1277 2423
1278 if (evfd >= 0) 2424 if (fds [1] < 0)
2425# endif
1279 { 2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
1280 evpipe [0] = -1; 2433 evpipe [0] = fds [0];
1281 fd_intern (evfd); /* doing it twice doesn't hurt */ 2434
1282 ev_io_set (&pipe_w, evfd, EV_READ); 2435 if (evpipe [1] < 0)
2436 evpipe [1] = fds [1]; /* first call, set write fd */
2437 else
2438 {
2439 /* on subsequent calls, do not change evpipe [1] */
2440 /* so that evpipe_write can always rely on its value. */
2441 /* this branch does not do anything sensible on windows, */
2442 /* so must not be executed on windows */
2443
2444 dup2 (fds [1], evpipe [1]);
2445 close (fds [1]);
2446 }
2447
2448 fd_intern (evpipe [1]);
2449
2450 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2451 ev_io_start (EV_A_ &pipe_w);
2452 ev_unref (EV_A); /* watcher should not keep loop alive */
2453 }
2454}
2455
2456inline_speed void
2457evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2458{
2459 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2460
2461 if (expect_true (*flag))
2462 return;
2463
2464 *flag = 1;
2465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2466
2467 pipe_write_skipped = 1;
2468
2469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2470
2471 if (pipe_write_wanted)
2472 {
2473 int old_errno;
2474
2475 pipe_write_skipped = 0;
2476 ECB_MEMORY_FENCE_RELEASE;
2477
2478 old_errno = errno; /* save errno because write will clobber it */
2479
2480#if EV_USE_EVENTFD
2481 if (evpipe [0] < 0)
2482 {
2483 uint64_t counter = 1;
2484 write (evpipe [1], &counter, sizeof (uint64_t));
1283 } 2485 }
1284 else 2486 else
1285# endif 2487#endif
1286 { 2488 {
1287 while (pipe (evpipe)) 2489#ifdef _WIN32
1288 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1289 2491 DWORD sent;
1290 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1291 fd_intern (evpipe [1]); 2493 buf.len = 1;
1292 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2495#else
2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1293 } 2498 }
1294
1295 ev_io_start (EV_A_ &pipe_w);
1296 ev_unref (EV_A); /* watcher should not keep loop alive */
1297 }
1298}
1299
1300inline_size void
1301evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1302{
1303 if (!*flag)
1304 {
1305 int old_errno = errno; /* save errno because write might clobber it */
1306 char dummy;
1307
1308 *flag = 1;
1309
1310#if EV_USE_EVENTFD
1311 if (evfd >= 0)
1312 {
1313 uint64_t counter = 1;
1314 write (evfd, &counter, sizeof (uint64_t));
1315 }
1316 else
1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1323 write (evpipe [1], &dummy, 1);
1324 2499
1325 errno = old_errno; 2500 errno = old_errno;
1326 } 2501 }
1327} 2502}
1328 2503
… …
1331static void 2506static void
1332pipecb (EV_P_ ev_io *iow, int revents) 2507pipecb (EV_P_ ev_io *iow, int revents)
1333{ 2508{
1334 int i; 2509 int i;
1335 2510
2511 if (revents & EV_READ)
2512 {
1336#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1337 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1338 { 2515 {
1339 uint64_t counter; 2516 uint64_t counter;
1340 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1341 } 2518 }
1342 else 2519 else
1343#endif 2520#endif
1344 { 2521 {
1345 char dummy; 2522 char dummy[4];
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2523#ifdef _WIN32
2524 WSABUF buf;
2525 DWORD recvd;
2526 DWORD flags = 0;
2527 buf.buf = dummy;
2528 buf.len = sizeof (dummy);
2529 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2530#else
1347 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
2533 }
1348 } 2534 }
1349 2535
2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2539
2540#if EV_SIGNAL_ENABLE
1350 if (sig_pending) 2541 if (sig_pending)
1351 { 2542 {
1352 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1353 2546
1354 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1357 } 2550 }
2551#endif
1358 2552
1359#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1360 if (async_pending) 2554 if (async_pending)
1361 { 2555 {
1362 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1363 2559
1364 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1365 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1366 { 2562 {
1367 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1368 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1369 } 2566 }
1370 } 2567 }
1371#endif 2568#endif
1372} 2569}
1373 2570
1374/*****************************************************************************/ 2571/*****************************************************************************/
1375 2572
2573void
2574ev_feed_signal (int signum) EV_NOEXCEPT
2575{
2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
2579 EV_A = signals [signum - 1].loop;
2580
2581 if (!EV_A)
2582 return;
2583#endif
2584
2585 signals [signum - 1].pending = 1;
2586 evpipe_write (EV_A_ &sig_pending);
2587}
2588
1376static void 2589static void
1377ev_sighandler (int signum) 2590ev_sighandler (int signum)
1378{ 2591{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32 2592#ifdef _WIN32
1384 signal (signum, ev_sighandler); 2593 signal (signum, ev_sighandler);
1385#endif 2594#endif
1386 2595
1387 signals [signum - 1].pending = 1; 2596 ev_feed_signal (signum);
1388 evpipe_write (EV_A_ &sig_pending);
1389} 2597}
1390 2598
1391void noinline 2599noinline
2600void
1392ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1393{ 2602{
1394 WL w; 2603 WL w;
1395 2604
1396 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1397 return; 2606 return;
1398 2607
1399 --signum; 2608 --signum;
1400 2609
1401#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1405 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1406 return; 2615 return;
1407#endif 2616#endif
1408 2617
1409 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1410 2620
1411 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1412 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1413} 2623}
1414 2624
… …
1502# include "ev_port.c" 2712# include "ev_port.c"
1503#endif 2713#endif
1504#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
1505# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
1506#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
1507#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
1508# include "ev_epoll.c" 2721# include "ev_epoll.c"
1509#endif 2722#endif
1510#if EV_USE_POLL 2723#if EV_USE_POLL
1511# include "ev_poll.c" 2724# include "ev_poll.c"
1512#endif 2725#endif
1513#if EV_USE_SELECT 2726#if EV_USE_SELECT
1514# include "ev_select.c" 2727# include "ev_select.c"
1515#endif 2728#endif
1516 2729
1517int 2730ecb_cold int
1518ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
1519{ 2732{
1520 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
1521} 2734}
1522 2735
1523int 2736ecb_cold int
1524ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
1525{ 2738{
1526 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
1527} 2740}
1528 2741
1529/* return true if we are running with elevated privileges and should ignore env variables */ 2742/* return true if we are running with elevated privileges and should ignore env variables */
1530int inline_size 2743inline_size ecb_cold int
1531enable_secure (void) 2744enable_secure (void)
1532{ 2745{
1533#ifdef _WIN32 2746#ifdef _WIN32
1534 return 0; 2747 return 0;
1535#else 2748#else
1536 return getuid () != geteuid () 2749 return getuid () != geteuid ()
1537 || getgid () != getegid (); 2750 || getgid () != getegid ();
1538#endif 2751#endif
1539} 2752}
1540 2753
2754ecb_cold
1541unsigned int 2755unsigned int
1542ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
1543{ 2757{
1544 unsigned int flags = 0; 2758 unsigned int flags = 0;
1545 2759
1546 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1547 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1548 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1549 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1550 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1551 2766
1552 return flags; 2767 return flags;
1553} 2768}
1554 2769
2770ecb_cold
1555unsigned int 2771unsigned int
1556ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
1557{ 2773{
1558 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
1559 2775
1560#ifndef __NetBSD__ 2776#ifndef __NetBSD__
1561 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
1572#endif 2788#endif
1573 2789
1574 return flags; 2790 return flags;
1575} 2791}
1576 2792
2793ecb_cold
1577unsigned int 2794unsigned int
1578ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
1579{ 2796{
1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1581 2798
1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2799 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2800 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1585 2802
1586 return flags; 2803 return flags;
1587} 2804}
1588 2805
1589unsigned int 2806unsigned int
1590ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
1591{ 2808{
1592 return backend; 2809 return backend;
1593} 2810}
1594 2811
1595#if EV_FEATURE_API 2812#if EV_FEATURE_API
1596unsigned int 2813unsigned int
1597ev_iteration (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
1598{ 2815{
1599 return loop_count; 2816 return loop_count;
1600} 2817}
1601 2818
1602unsigned int 2819unsigned int
1603ev_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
1604{ 2821{
1605 return loop_depth; 2822 return loop_depth;
1606} 2823}
1607 2824
1608void 2825void
1609ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1610{ 2827{
1611 io_blocktime = interval; 2828 io_blocktime = interval;
1612} 2829}
1613 2830
1614void 2831void
1615ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1616{ 2833{
1617 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
1618} 2835}
1619 2836
1620void 2837void
1621ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1622{ 2839{
1623 userdata = data; 2840 userdata = data;
1624} 2841}
1625 2842
1626void * 2843void *
1627ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
1628{ 2845{
1629 return userdata; 2846 return userdata;
1630} 2847}
1631 2848
2849void
1632void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2850ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1633{ 2851{
1634 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
1635} 2853}
1636 2854
2855void
1637void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2856ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1638{ 2857{
1639 release_cb = release; 2858 release_cb = release;
1640 acquire_cb = acquire; 2859 acquire_cb = acquire;
1641} 2860}
1642#endif 2861#endif
1643 2862
1644/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
1645static void noinline 2864noinline ecb_cold
2865static void
1646loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1647{ 2867{
1648 if (!backend) 2868 if (!backend)
1649 { 2869 {
2870 origflags = flags;
2871
1650#if EV_USE_REALTIME 2872#if EV_USE_REALTIME
1651 if (!have_realtime) 2873 if (!have_realtime)
1652 { 2874 {
1653 struct timespec ts; 2875 struct timespec ts;
1654 2876
… …
1676 if (!(flags & EVFLAG_NOENV) 2898 if (!(flags & EVFLAG_NOENV)
1677 && !enable_secure () 2899 && !enable_secure ()
1678 && getenv ("LIBEV_FLAGS")) 2900 && getenv ("LIBEV_FLAGS"))
1679 flags = atoi (getenv ("LIBEV_FLAGS")); 2901 flags = atoi (getenv ("LIBEV_FLAGS"));
1680 2902
1681 ev_rt_now = ev_time (); 2903 ev_rt_now = ev_time ();
1682 mn_now = get_clock (); 2904 mn_now = get_clock ();
1683 now_floor = mn_now; 2905 now_floor = mn_now;
1684 rtmn_diff = ev_rt_now - mn_now; 2906 rtmn_diff = ev_rt_now - mn_now;
1685#if EV_FEATURE_API 2907#if EV_FEATURE_API
1686 invoke_cb = ev_invoke_pending; 2908 invoke_cb = ev_invoke_pending;
1687#endif 2909#endif
1688 2910
1689 io_blocktime = 0.; 2911 io_blocktime = 0.;
1690 timeout_blocktime = 0.; 2912 timeout_blocktime = 0.;
1691 backend = 0; 2913 backend = 0;
1692 backend_fd = -1; 2914 backend_fd = -1;
1693 sig_pending = 0; 2915 sig_pending = 0;
1694#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
1695 async_pending = 0; 2917 async_pending = 0;
1696#endif 2918#endif
2919 pipe_write_skipped = 0;
2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
1697#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
1698 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1699#endif 2925#endif
1700#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif 2928#endif
1703 2929
1704 if (!(flags & 0x0000ffffU)) 2930 if (!(flags & EVBACKEND_MASK))
1705 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
1706 2932
1707#if EV_USE_IOCP 2933#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif 2935#endif
1710#if EV_USE_PORT 2936#if EV_USE_PORT
1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1712#endif 2938#endif
1713#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2940 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2941#endif
2942#if EV_USE_LINUXAIO
2943 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1715#endif 2944#endif
1716#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
1717 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1718#endif 2947#endif
1719#if EV_USE_POLL 2948#if EV_USE_POLL
1720 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1721#endif 2950#endif
1722#if EV_USE_SELECT 2951#if EV_USE_SELECT
1723 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1724#endif 2953#endif
1725 2954
1726 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
1727 2956
1728#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1731#endif 2960#endif
1732 } 2961 }
1733} 2962}
1734 2963
1735/* free up a loop structure */ 2964/* free up a loop structure */
2965ecb_cold
1736void 2966void
1737ev_loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
1738{ 2968{
1739 int i; 2969 int i;
2970
2971#if EV_MULTIPLICITY
2972 /* mimic free (0) */
2973 if (!EV_A)
2974 return;
2975#endif
1740 2976
1741#if EV_CLEANUP_ENABLE 2977#if EV_CLEANUP_ENABLE
1742 /* queue cleanup watchers (and execute them) */ 2978 /* queue cleanup watchers (and execute them) */
1743 if (expect_false (cleanupcnt)) 2979 if (expect_false (cleanupcnt))
1744 { 2980 {
… …
1746 EV_INVOKE_PENDING; 2982 EV_INVOKE_PENDING;
1747 } 2983 }
1748#endif 2984#endif
1749 2985
1750#if EV_CHILD_ENABLE 2986#if EV_CHILD_ENABLE
1751 if (ev_is_active (&childev)) 2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1752 { 2988 {
1753 ev_ref (EV_A); /* child watcher */ 2989 ev_ref (EV_A); /* child watcher */
1754 ev_signal_stop (EV_A_ &childev); 2990 ev_signal_stop (EV_A_ &childev);
1755 } 2991 }
1756#endif 2992#endif
… …
1758 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
1759 { 2995 {
1760 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
1761 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
1762 2998
1763#if EV_USE_EVENTFD
1764 if (evfd >= 0)
1765 close (evfd);
1766#endif
1767
1768 if (evpipe [0] >= 0)
1769 {
1770 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1771 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1772 }
1773 } 3001 }
1774 3002
1775#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
1776 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
1777 close (sigfd); 3005 close (sigfd);
… …
1784 3012
1785 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
1786 close (backend_fd); 3014 close (backend_fd);
1787 3015
1788#if EV_USE_IOCP 3016#if EV_USE_IOCP
1789 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1790#endif 3018#endif
1791#if EV_USE_PORT 3019#if EV_USE_PORT
1792 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1793#endif 3021#endif
1794#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
1795 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3023 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3024#endif
3025#if EV_USE_LINUXAIO
3026 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1796#endif 3027#endif
1797#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
1798 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1799#endif 3030#endif
1800#if EV_USE_POLL 3031#if EV_USE_POLL
1801 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1802#endif 3033#endif
1803#if EV_USE_SELECT 3034#if EV_USE_SELECT
1804 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1805#endif 3036#endif
1806 3037
1807 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
1808 { 3039 {
1809 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
1851 3082
1852inline_size void 3083inline_size void
1853loop_fork (EV_P) 3084loop_fork (EV_P)
1854{ 3085{
1855#if EV_USE_PORT 3086#if EV_USE_PORT
1856 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1857#endif 3088#endif
1858#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
1859 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3090 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3091#endif
3092#if EV_USE_LINUXAIO
3093 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1860#endif 3094#endif
1861#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
1862 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1863#endif 3097#endif
1864#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
1865 infy_fork (EV_A); 3099 infy_fork (EV_A);
1866#endif 3100#endif
1867 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1868 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
1869 { 3104 {
1870 /* this "locks" the handlers against writing to the pipe */ 3105 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1871 /* while we modify the fd vars */
1872 sig_pending = 1;
1873#if EV_ASYNC_ENABLE
1874 async_pending = 1;
1875#endif
1876 3106
1877 ev_ref (EV_A); 3107 ev_ref (EV_A);
1878 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
1879 3109
1880#if EV_USE_EVENTFD
1881 if (evfd >= 0)
1882 close (evfd);
1883#endif
1884
1885 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
1886 {
1887 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
1888 EV_WIN32_CLOSE_FD (evpipe [1]);
1889 }
1890 3112
1891#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1892 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
1893 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
1894 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1895#endif
1896 } 3116 }
3117#endif
1897 3118
1898 postfork = 0; 3119 postfork = 0;
1899} 3120}
1900 3121
1901#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
1902 3123
3124ecb_cold
1903struct ev_loop * 3125struct ev_loop *
1904ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
1905{ 3127{
1906 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1907 3129
1908 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
1909 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
… …
1916} 3138}
1917 3139
1918#endif /* multiplicity */ 3140#endif /* multiplicity */
1919 3141
1920#if EV_VERIFY 3142#if EV_VERIFY
1921static void noinline 3143noinline ecb_cold
3144static void
1922verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
1923{ 3146{
1924 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3147 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1925 3148
1926 if (w->pending) 3149 if (w->pending)
1927 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3150 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1928} 3151}
1929 3152
1930static void noinline 3153noinline ecb_cold
3154static void
1931verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
1932{ 3156{
1933 int i; 3157 int i;
1934 3158
1935 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1940 3164
1941 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1942 } 3166 }
1943} 3167}
1944 3168
1945static void noinline 3169noinline ecb_cold
3170static void
1946array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
1947{ 3172{
1948 while (cnt--) 3173 while (cnt--)
1949 { 3174 {
1950 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1952 } 3177 }
1953} 3178}
1954#endif 3179#endif
1955 3180
1956#if EV_FEATURE_API 3181#if EV_FEATURE_API
1957void 3182void ecb_cold
1958ev_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
1959{ 3184{
1960#if EV_VERIFY 3185#if EV_VERIFY
1961 int i; 3186 int i;
1962 WL w; 3187 WL w, w2;
1963 3188
1964 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
1965 3190
1966 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
1967 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
1968 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1969 3194
1970 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
1971 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
1972 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
1973 { 3201 {
1974 verify_watcher (EV_A_ (W)w); 3202 verify_watcher (EV_A_ (W)w);
3203
3204 if (j++ & 1)
3205 {
3206 assert (("libev: io watcher list contains a loop", w != w2));
3207 w2 = w2->next;
3208 }
3209
1975 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3210 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1976 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3211 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1977 } 3212 }
3213 }
1978 3214
1979 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
1980 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
1981 3217
1982#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
2028#endif 3264#endif
2029} 3265}
2030#endif 3266#endif
2031 3267
2032#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
2033struct ev_loop * 3270struct ev_loop *
2034#else 3271#else
2035int 3272int
2036#endif 3273#endif
2037ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
2038{ 3275{
2039 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
2040 { 3277 {
2041#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
2042 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2061 3298
2062 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
2063} 3300}
2064 3301
2065void 3302void
2066ev_loop_fork (EV_P) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
2067{ 3304{
2068 postfork = 1; /* must be in line with ev_default_fork */ 3305 postfork = 1;
2069} 3306}
2070 3307
2071/*****************************************************************************/ 3308/*****************************************************************************/
2072 3309
2073void 3310void
… …
2075{ 3312{
2076 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
2077} 3314}
2078 3315
2079unsigned int 3316unsigned int
2080ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
2081{ 3318{
2082 int pri; 3319 int pri;
2083 unsigned int count = 0; 3320 unsigned int count = 0;
2084 3321
2085 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
2086 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
2087 3324
2088 return count; 3325 return count;
2089} 3326}
2090 3327
2091void noinline 3328noinline
3329void
2092ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
2093{ 3331{
2094 int pri; 3332 pendingpri = NUMPRI;
2095 3333
2096 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
2097 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
2098 { 3340 {
2099 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2100 3342
2101 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2102 /* ^ this is no longer true, as pending_w could be here */
2103
2104 p->w->pending = 0; 3343 p->w->pending = 0;
2105 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2106 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2107 } 3346 }
3347 }
3348 while (pendingpri);
2108} 3349}
2109 3350
2110#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2111/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2112/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2169 feed_reverse_done (EV_A_ EV_TIMER); 3410 feed_reverse_done (EV_A_ EV_TIMER);
2170 } 3411 }
2171} 3412}
2172 3413
2173#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
3415
3416noinline
3417static void
3418periodic_recalc (EV_P_ ev_periodic *w)
3419{
3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3421 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3422
3423 /* the above almost always errs on the low side */
3424 while (at <= ev_rt_now)
3425 {
3426 ev_tstamp nat = at + w->interval;
3427
3428 /* when resolution fails us, we use ev_rt_now */
3429 if (expect_false (nat == at))
3430 {
3431 at = ev_rt_now;
3432 break;
3433 }
3434
3435 at = nat;
3436 }
3437
3438 ev_at (w) = at;
3439}
3440
2174/* make periodics pending */ 3441/* make periodics pending */
2175inline_size void 3442inline_size void
2176periodics_reify (EV_P) 3443periodics_reify (EV_P)
2177{ 3444{
2178 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2179 3446
2180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2181 { 3448 {
2182 int feed_count = 0;
2183
2184 do 3449 do
2185 { 3450 {
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2187 3452
2188 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3453 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2197 ANHE_at_cache (periodics [HEAP0]); 3462 ANHE_at_cache (periodics [HEAP0]);
2198 downheap (periodics, periodiccnt, HEAP0); 3463 downheap (periodics, periodiccnt, HEAP0);
2199 } 3464 }
2200 else if (w->interval) 3465 else if (w->interval)
2201 { 3466 {
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3467 periodic_recalc (EV_A_ w);
2203 /* if next trigger time is not sufficiently in the future, put it there */
2204 /* this might happen because of floating point inexactness */
2205 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2206 {
2207 ev_at (w) += w->interval;
2208
2209 /* if interval is unreasonably low we might still have a time in the past */
2210 /* so correct this. this will make the periodic very inexact, but the user */
2211 /* has effectively asked to get triggered more often than possible */
2212 if (ev_at (w) < ev_rt_now)
2213 ev_at (w) = ev_rt_now;
2214 }
2215
2216 ANHE_at_cache (periodics [HEAP0]); 3468 ANHE_at_cache (periodics [HEAP0]);
2217 downheap (periodics, periodiccnt, HEAP0); 3469 downheap (periodics, periodiccnt, HEAP0);
2218 } 3470 }
2219 else 3471 else
2220 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3472 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2228 } 3480 }
2229} 3481}
2230 3482
2231/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2232/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3484/* TODO: maybe ensure that at least one event happens when jumping forward? */
2233static void noinline 3485noinline ecb_cold
3486static void
2234periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2235{ 3488{
2236 int i; 3489 int i;
2237 3490
2238 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2241 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3494 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2242 3495
2243 if (w->reschedule_cb) 3496 if (w->reschedule_cb)
2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3497 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245 else if (w->interval) 3498 else if (w->interval)
2246 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3499 periodic_recalc (EV_A_ w);
2247 3500
2248 ANHE_at_cache (periodics [i]); 3501 ANHE_at_cache (periodics [i]);
2249 } 3502 }
2250 3503
2251 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2252} 3505}
2253#endif 3506#endif
2254 3507
2255/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2256static void noinline 3509noinline ecb_cold
3510static void
2257timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2258{ 3512{
2259 int i; 3513 int i;
2260 3514
2261 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2298 * doesn't hurt either as we only do this on time-jumps or 3552 * doesn't hurt either as we only do this on time-jumps or
2299 * in the unlikely event of having been preempted here. 3553 * in the unlikely event of having been preempted here.
2300 */ 3554 */
2301 for (i = 4; --i; ) 3555 for (i = 4; --i; )
2302 { 3556 {
3557 ev_tstamp diff;
2303 rtmn_diff = ev_rt_now - mn_now; 3558 rtmn_diff = ev_rt_now - mn_now;
2304 3559
3560 diff = odiff - rtmn_diff;
3561
2305 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3562 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2306 return; /* all is well */ 3563 return; /* all is well */
2307 3564
2308 ev_rt_now = ev_time (); 3565 ev_rt_now = ev_time ();
2309 mn_now = get_clock (); 3566 mn_now = get_clock ();
2310 now_floor = mn_now; 3567 now_floor = mn_now;
… …
2332 3589
2333 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2334 } 3591 }
2335} 3592}
2336 3593
2337void 3594int
2338ev_run (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2339{ 3596{
2340#if EV_FEATURE_API 3597#if EV_FEATURE_API
2341 ++loop_depth; 3598 ++loop_depth;
2342#endif 3599#endif
… …
2400 ev_tstamp prev_mn_now = mn_now; 3657 ev_tstamp prev_mn_now = mn_now;
2401 3658
2402 /* update time to cancel out callback processing overhead */ 3659 /* update time to cancel out callback processing overhead */
2403 time_update (EV_A_ 1e100); 3660 time_update (EV_A_ 1e100);
2404 3661
3662 /* from now on, we want a pipe-wake-up */
3663 pipe_write_wanted = 1;
3664
3665 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3666
2405 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3667 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2406 { 3668 {
2407 waittime = MAX_BLOCKTIME; 3669 waittime = MAX_BLOCKTIME;
2408 3670
2409 if (timercnt) 3671 if (timercnt)
2410 { 3672 {
2411 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3673 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2412 if (waittime > to) waittime = to; 3674 if (waittime > to) waittime = to;
2413 } 3675 }
2414 3676
2415#if EV_PERIODIC_ENABLE 3677#if EV_PERIODIC_ENABLE
2416 if (periodiccnt) 3678 if (periodiccnt)
2417 { 3679 {
2418 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3680 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2419 if (waittime > to) waittime = to; 3681 if (waittime > to) waittime = to;
2420 } 3682 }
2421#endif 3683#endif
2422 3684
2423 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3685 /* don't let timeouts decrease the waittime below timeout_blocktime */
2424 if (expect_false (waittime < timeout_blocktime)) 3686 if (expect_false (waittime < timeout_blocktime))
2425 waittime = timeout_blocktime; 3687 waittime = timeout_blocktime;
3688
3689 /* at this point, we NEED to wait, so we have to ensure */
3690 /* to pass a minimum nonzero value to the backend */
3691 if (expect_false (waittime < backend_mintime))
3692 waittime = backend_mintime;
2426 3693
2427 /* extra check because io_blocktime is commonly 0 */ 3694 /* extra check because io_blocktime is commonly 0 */
2428 if (expect_false (io_blocktime)) 3695 if (expect_false (io_blocktime))
2429 { 3696 {
2430 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3697 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2431 3698
2432 if (sleeptime > waittime - backend_fudge) 3699 if (sleeptime > waittime - backend_mintime)
2433 sleeptime = waittime - backend_fudge; 3700 sleeptime = waittime - backend_mintime;
2434 3701
2435 if (expect_true (sleeptime > 0.)) 3702 if (expect_true (sleeptime > 0.))
2436 { 3703 {
2437 ev_sleep (sleeptime); 3704 ev_sleep (sleeptime);
2438 waittime -= sleeptime; 3705 waittime -= sleeptime;
… …
2445#endif 3712#endif
2446 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3713 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2447 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
2448 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2449 3716
3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3720 if (pipe_write_skipped)
3721 {
3722 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3724 }
3725
3726
2450 /* update ev_rt_now, do magic */ 3727 /* update ev_rt_now, do magic */
2451 time_update (EV_A_ waittime + sleeptime); 3728 time_update (EV_A_ waittime + sleeptime);
2452 } 3729 }
2453 3730
2454 /* queue pending timers and reschedule them */ 3731 /* queue pending timers and reschedule them */
… …
2480 loop_done = EVBREAK_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
2481 3758
2482#if EV_FEATURE_API 3759#if EV_FEATURE_API
2483 --loop_depth; 3760 --loop_depth;
2484#endif 3761#endif
2485}
2486 3762
3763 return activecnt;
3764}
3765
2487void 3766void
2488ev_break (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
2489{ 3768{
2490 loop_done = how; 3769 loop_done = how;
2491} 3770}
2492 3771
2493void 3772void
2494ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
2495{ 3774{
2496 ++activecnt; 3775 ++activecnt;
2497} 3776}
2498 3777
2499void 3778void
2500ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
2501{ 3780{
2502 --activecnt; 3781 --activecnt;
2503} 3782}
2504 3783
2505void 3784void
2506ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
2507{ 3786{
2508 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
2509} 3788}
2510 3789
2511void 3790void
2512ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
2513{ 3792{
2514 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
2515} 3794}
2516 3795
2517void 3796void
2518ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
2519{ 3798{
2520 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
2521 3800
2522 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
2523 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2562 w->pending = 0; 3841 w->pending = 0;
2563 } 3842 }
2564} 3843}
2565 3844
2566int 3845int
2567ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2568{ 3847{
2569 W w_ = (W)w; 3848 W w_ = (W)w;
2570 int pending = w_->pending; 3849 int pending = w_->pending;
2571 3850
2572 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
2604 w->active = 0; 3883 w->active = 0;
2605} 3884}
2606 3885
2607/*****************************************************************************/ 3886/*****************************************************************************/
2608 3887
2609void noinline 3888noinline
3889void
2610ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2611{ 3891{
2612 int fd = w->fd; 3892 int fd = w->fd;
2613 3893
2614 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2615 return; 3895 return;
… …
2618 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3898 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2619 3899
2620 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2621 3901
2622 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
2623 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2624 wlist_add (&anfds[fd].head, (WL)w); 3904 wlist_add (&anfds[fd].head, (WL)w);
3905
3906 /* common bug, apparently */
3907 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2625 3908
2626 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3909 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2627 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
2628 3911
2629 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2630} 3913}
2631 3914
2632void noinline 3915noinline
3916void
2633ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2634{ 3918{
2635 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2636 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2637 return; 3921 return;
2638 3922
… …
2646 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2647 3931
2648 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2649} 3933}
2650 3934
2651void noinline 3935noinline
3936void
2652ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2653{ 3938{
2654 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
2655 return; 3940 return;
2656 3941
2657 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
2660 3945
2661 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
2662 3947
2663 ++timercnt; 3948 ++timercnt;
2664 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2665 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2666 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
2667 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
2668 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
2669 3954
2670 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2671 3956
2672 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3957 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2673} 3958}
2674 3959
2675void noinline 3960noinline
3961void
2676ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2677{ 3963{
2678 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
2679 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
2680 return; 3966 return;
2681 3967
… …
2700 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
2701 3987
2702 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
2703} 3989}
2704 3990
2705void noinline 3991noinline
3992void
2706ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2707{ 3994{
2708 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3996
3997 clear_pending (EV_A_ (W)w);
2709 3998
2710 if (ev_is_active (w)) 3999 if (ev_is_active (w))
2711 { 4000 {
2712 if (w->repeat) 4001 if (w->repeat)
2713 { 4002 {
… …
2726 4015
2727 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2728} 4017}
2729 4018
2730ev_tstamp 4019ev_tstamp
2731ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2732{ 4021{
2733 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2734} 4023}
2735 4024
2736#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
2737void noinline 4026noinline
4027void
2738ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2739{ 4029{
2740 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2741 return; 4031 return;
2742 4032
2743 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
2744 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4034 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2745 else if (w->interval) 4035 else if (w->interval)
2746 { 4036 {
2747 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4037 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2748 /* this formula differs from the one in periodic_reify because we do not always round up */ 4038 periodic_recalc (EV_A_ w);
2749 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2750 } 4039 }
2751 else 4040 else
2752 ev_at (w) = w->offset; 4041 ev_at (w) = w->offset;
2753 4042
2754 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
2755 4044
2756 ++periodiccnt; 4045 ++periodiccnt;
2757 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2758 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2759 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2760 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
2761 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
2762 4051
2763 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2764 4053
2765 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4054 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2766} 4055}
2767 4056
2768void noinline 4057noinline
4058void
2769ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2770{ 4060{
2771 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
2772 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
2773 return; 4063 return;
2774 4064
… …
2791 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
2792 4082
2793 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
2794} 4084}
2795 4085
2796void noinline 4086noinline
4087void
2797ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2798{ 4089{
2799 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
2800 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
2801 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
2802} 4093}
… …
2806# define SA_RESTART 0 4097# define SA_RESTART 0
2807#endif 4098#endif
2808 4099
2809#if EV_SIGNAL_ENABLE 4100#if EV_SIGNAL_ENABLE
2810 4101
2811void noinline 4102noinline
4103void
2812ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2813{ 4105{
2814 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
2815 return; 4107 return;
2816 4108
2817 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4109 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2819#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
2820 assert (("libev: a signal must not be attached to two different loops", 4112 assert (("libev: a signal must not be attached to two different loops",
2821 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2822 4114
2823 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
2824#endif 4117#endif
2825 4118
2826 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
2827 4120
2828#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
2875 sa.sa_handler = ev_sighandler; 4168 sa.sa_handler = ev_sighandler;
2876 sigfillset (&sa.sa_mask); 4169 sigfillset (&sa.sa_mask);
2877 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4170 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2878 sigaction (w->signum, &sa, 0); 4171 sigaction (w->signum, &sa, 0);
2879 4172
4173 if (origflags & EVFLAG_NOSIGMASK)
4174 {
2880 sigemptyset (&sa.sa_mask); 4175 sigemptyset (&sa.sa_mask);
2881 sigaddset (&sa.sa_mask, w->signum); 4176 sigaddset (&sa.sa_mask, w->signum);
2882 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4177 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4178 }
2883#endif 4179#endif
2884 } 4180 }
2885 4181
2886 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
2887} 4183}
2888 4184
2889void noinline 4185noinline
4186void
2890ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2891{ 4188{
2892 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
2893 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
2894 return; 4191 return;
2895 4192
… …
2926#endif 4223#endif
2927 4224
2928#if EV_CHILD_ENABLE 4225#if EV_CHILD_ENABLE
2929 4226
2930void 4227void
2931ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2932{ 4229{
2933#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
2934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4231 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2935#endif 4232#endif
2936 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
… …
2943 4240
2944 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
2945} 4242}
2946 4243
2947void 4244void
2948ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2949{ 4246{
2950 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
2951 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
2952 return; 4249 return;
2953 4250
… …
2970 4267
2971#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
2972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2973#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
2974 4271
2975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4272noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2976 4273
2977#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
2978 4275
2979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4276/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2981 4278
2982static void noinline 4279noinline
4280static void
2983infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
2984{ 4282{
2985 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4283 w->wd = inotify_add_watch (fs_fd, w->path,
4284 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4285 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4286 | IN_DONT_FOLLOW | IN_MASK_ADD);
2986 4287
2987 if (w->wd >= 0) 4288 if (w->wd >= 0)
2988 { 4289 {
2989 struct statfs sfs; 4290 struct statfs sfs;
2990 4291
… …
2994 4295
2995 if (!fs_2625) 4296 if (!fs_2625)
2996 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2997 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
2998 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
2999 || sfs.f_type == 0xEF53 /* ext2/3 */ 4302 || sfs.f_type == 0xEF53 /* ext2/3 */
4303 || sfs.f_type == 0x72b6 /* jffs2 */
4304 || sfs.f_type == 0x858458f6 /* ramfs */
4305 || sfs.f_type == 0x5346544e /* ntfs */
3000 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
3001 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
3002 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
3003 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
3004 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3005 else 4312 else
3006 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4313 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3007 } 4314 }
… …
3028 if (!pend || pend == path) 4335 if (!pend || pend == path)
3029 break; 4336 break;
3030 4337
3031 *pend = 0; 4338 *pend = 0;
3032 w->wd = inotify_add_watch (fs_fd, path, mask); 4339 w->wd = inotify_add_watch (fs_fd, path, mask);
3033 } 4340 }
3034 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4341 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3035 } 4342 }
3036 } 4343 }
3037 4344
3038 if (w->wd >= 0) 4345 if (w->wd >= 0)
… …
3042 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3043 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
3044 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3045} 4352}
3046 4353
3047static void noinline 4354noinline
4355static void
3048infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
3049{ 4357{
3050 int slot; 4358 int slot;
3051 int wd = w->wd; 4359 int wd = w->wd;
3052 4360
… …
3059 4367
3060 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
3061 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
3062} 4370}
3063 4371
3064static void noinline 4372noinline
4373static void
3065infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3066{ 4375{
3067 if (slot < 0) 4376 if (slot < 0)
3068 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
3069 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3105 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3106 ofs += sizeof (struct inotify_event) + ev->len; 4415 ofs += sizeof (struct inotify_event) + ev->len;
3107 } 4416 }
3108} 4417}
3109 4418
3110inline_size void 4419inline_size ecb_cold
4420void
3111ev_check_2625 (EV_P) 4421ev_check_2625 (EV_P)
3112{ 4422{
3113 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
3114 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4424 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3115 */ 4425 */
… …
3120} 4430}
3121 4431
3122inline_size int 4432inline_size int
3123infy_newfd (void) 4433infy_newfd (void)
3124{ 4434{
3125#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3126 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3127 if (fd >= 0) 4437 if (fd >= 0)
3128 return fd; 4438 return fd;
3129#endif 4439#endif
3130 return inotify_init (); 4440 return inotify_init ();
… …
3205#else 4515#else
3206# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3207#endif 4517#endif
3208 4518
3209void 4519void
3210ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3211{ 4521{
3212 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3213 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3214 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3215 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3216} 4526}
3217 4527
3218static void noinline 4528noinline
4529static void
3219stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3220{ 4531{
3221 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3222 4533
3223 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3254 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3255 } 4566 }
3256} 4567}
3257 4568
3258void 4569void
3259ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3260{ 4571{
3261 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3262 return; 4573 return;
3263 4574
3264 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3285 4596
3286 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3287} 4598}
3288 4599
3289void 4600void
3290ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3291{ 4602{
3292 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3293 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3294 return; 4605 return;
3295 4606
… …
3311} 4622}
3312#endif 4623#endif
3313 4624
3314#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3315void 4626void
3316ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3317{ 4628{
3318 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3319 return; 4630 return;
3320 4631
3321 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3326 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3327 4638
3328 ++idleall; 4639 ++idleall;
3329 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3330 4641
3331 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4642 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3332 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3333 } 4644 }
3334 4645
3335 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3336} 4647}
3337 4648
3338void 4649void
3339ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3340{ 4651{
3341 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3342 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3343 return; 4654 return;
3344 4655
… …
3358} 4669}
3359#endif 4670#endif
3360 4671
3361#if EV_PREPARE_ENABLE 4672#if EV_PREPARE_ENABLE
3362void 4673void
3363ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3364{ 4675{
3365 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3366 return; 4677 return;
3367 4678
3368 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3369 4680
3370 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3371 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3372 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3373 4684
3374 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3375} 4686}
3376 4687
3377void 4688void
3378ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3379{ 4690{
3380 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3381 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3382 return; 4693 return;
3383 4694
… …
3396} 4707}
3397#endif 4708#endif
3398 4709
3399#if EV_CHECK_ENABLE 4710#if EV_CHECK_ENABLE
3400void 4711void
3401ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3402{ 4713{
3403 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
3404 return; 4715 return;
3405 4716
3406 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
3407 4718
3408 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
3409 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3410 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
3411 4722
3412 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
3413} 4724}
3414 4725
3415void 4726void
3416ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3417{ 4728{
3418 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
3419 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
3420 return; 4731 return;
3421 4732
… …
3433 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
3434} 4745}
3435#endif 4746#endif
3436 4747
3437#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
3438void noinline 4749noinline
4750void
3439ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3440{ 4752{
3441 ev_run (w->other, EVRUN_NOWAIT); 4753 ev_run (w->other, EVRUN_NOWAIT);
3442} 4754}
3443 4755
3444static void 4756static void
… …
3492 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
3493} 4805}
3494#endif 4806#endif
3495 4807
3496void 4808void
3497ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3498{ 4810{
3499 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
3500 return; 4812 return;
3501 4813
3502 { 4814 {
… …
3523 4835
3524 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
3525} 4837}
3526 4838
3527void 4839void
3528ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3529{ 4841{
3530 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
3531 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
3532 return; 4844 return;
3533 4845
… …
3543} 4855}
3544#endif 4856#endif
3545 4857
3546#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
3547void 4859void
3548ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3549{ 4861{
3550 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
3551 return; 4863 return;
3552 4864
3553 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
3554 4866
3555 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
3556 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3557 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
3558 4870
3559 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
3560} 4872}
3561 4873
3562void 4874void
3563ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3564{ 4876{
3565 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
3567 return; 4879 return;
3568 4880
… …
3581} 4893}
3582#endif 4894#endif
3583 4895
3584#if EV_CLEANUP_ENABLE 4896#if EV_CLEANUP_ENABLE
3585void 4897void
3586ev_cleanup_start (EV_P_ ev_cleanup *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3587{ 4899{
3588 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
3589 return; 4901 return;
3590 4902
3591 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
3592 4904
3593 ev_start (EV_A_ (W)w, ++cleanupcnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
3594 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3595 cleanups [cleanupcnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
3596 4908
4909 /* cleanup watchers should never keep a refcount on the loop */
4910 ev_unref (EV_A);
3597 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
3598} 4912}
3599 4913
3600void 4914void
3601ev_cleanup_stop (EV_P_ ev_cleanup *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3602{ 4916{
3603 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
3604 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
3605 return; 4919 return;
3606 4920
3607 EV_FREQUENT_CHECK; 4921 EV_FREQUENT_CHECK;
4922 ev_ref (EV_A);
3608 4923
3609 { 4924 {
3610 int active = ev_active (w); 4925 int active = ev_active (w);
3611 4926
3612 cleanups [active - 1] = cleanups [--cleanupcnt]; 4927 cleanups [active - 1] = cleanups [--cleanupcnt];
… …
3619} 4934}
3620#endif 4935#endif
3621 4936
3622#if EV_ASYNC_ENABLE 4937#if EV_ASYNC_ENABLE
3623void 4938void
3624ev_async_start (EV_P_ ev_async *w) 4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3625{ 4940{
3626 if (expect_false (ev_is_active (w))) 4941 if (expect_false (ev_is_active (w)))
3627 return; 4942 return;
3628 4943
3629 w->sent = 0; 4944 w->sent = 0;
… …
3631 evpipe_init (EV_A); 4946 evpipe_init (EV_A);
3632 4947
3633 EV_FREQUENT_CHECK; 4948 EV_FREQUENT_CHECK;
3634 4949
3635 ev_start (EV_A_ (W)w, ++asynccnt); 4950 ev_start (EV_A_ (W)w, ++asynccnt);
3636 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3637 asyncs [asynccnt - 1] = w; 4952 asyncs [asynccnt - 1] = w;
3638 4953
3639 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
3640} 4955}
3641 4956
3642void 4957void
3643ev_async_stop (EV_P_ ev_async *w) 4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3644{ 4959{
3645 clear_pending (EV_A_ (W)w); 4960 clear_pending (EV_A_ (W)w);
3646 if (expect_false (!ev_is_active (w))) 4961 if (expect_false (!ev_is_active (w)))
3647 return; 4962 return;
3648 4963
… …
3659 4974
3660 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
3661} 4976}
3662 4977
3663void 4978void
3664ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3665{ 4980{
3666 w->sent = 1; 4981 w->sent = 1;
3667 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
3668} 4983}
3669#endif 4984#endif
… …
3706 5021
3707 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5022 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3708} 5023}
3709 5024
3710void 5025void
3711ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5026ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3712{ 5027{
3713 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5028 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3714
3715 if (expect_false (!once))
3716 {
3717 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3718 return;
3719 }
3720 5029
3721 once->cb = cb; 5030 once->cb = cb;
3722 once->arg = arg; 5031 once->arg = arg;
3723 5032
3724 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
3737} 5046}
3738 5047
3739/*****************************************************************************/ 5048/*****************************************************************************/
3740 5049
3741#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
5051ecb_cold
3742void 5052void
3743ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5053ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3744{ 5054{
3745 int i, j; 5055 int i, j;
3746 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
3747 5057
3748 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))
… …
3791 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5101 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3792#endif 5102#endif
3793 5103
3794#if EV_IDLE_ENABLE 5104#if EV_IDLE_ENABLE
3795 if (types & EV_IDLE) 5105 if (types & EV_IDLE)
3796 for (j = NUMPRI; i--; ) 5106 for (j = NUMPRI; j--; )
3797 for (i = idlecnt [j]; i--; ) 5107 for (i = idlecnt [j]; i--; )
3798 cb (EV_A_ EV_IDLE, idles [j][i]); 5108 cb (EV_A_ EV_IDLE, idles [j][i]);
3799#endif 5109#endif
3800 5110
3801#if EV_FORK_ENABLE 5111#if EV_FORK_ENABLE
… …
3854 5164
3855#if EV_MULTIPLICITY 5165#if EV_MULTIPLICITY
3856 #include "ev_wrap.h" 5166 #include "ev_wrap.h"
3857#endif 5167#endif
3858 5168
3859EV_CPP(})
3860

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines