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Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.493 by root, Sun Jun 23 02:02:24 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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
… …
107# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# endif 114# endif
109# else 115# else
110# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
112# endif 127# endif
113 128
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
115# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
156# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
157# endif 172# endif
158 173
159#endif 174#endif
160 175
161#include <math.h> 176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
162#include <stdlib.h> 186#include <stdlib.h>
163#include <string.h> 187#include <string.h>
164#include <fcntl.h> 188#include <fcntl.h>
165#include <stddef.h> 189#include <stddef.h>
166 190
… …
178# include EV_H 202# include EV_H
179#else 203#else
180# include "ev.h" 204# include "ev.h"
181#endif 205#endif
182 206
183EV_CPP(extern "C" {) 207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
184 217
185#ifndef _WIN32 218#ifndef _WIN32
186# include <sys/time.h> 219# include <sys/time.h>
187# include <sys/wait.h> 220# include <sys/wait.h>
188# include <unistd.h> 221# include <unistd.h>
189#else 222#else
190# include <io.h> 223# include <io.h>
191# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
192# include <windows.h> 226# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
195# endif 229# endif
196# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
197#endif 231#endif
198 232
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 */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
208 234
209/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 236#if defined EV_NSIG
211/* use what's provided */ 237/* use what's provided */
212#elif defined (NSIG) 238#elif defined NSIG
213# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 240#elif defined _NSIG
215# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 242#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 244#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 248#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 250#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 254#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 256#else
231# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 258#endif
233/* but consider reporting it, too! :) */ 259
234# define EV_NSIG 65 260#ifndef EV_USE_FLOOR
261# define EV_USE_FLOOR 0
235#endif 262#endif
236 263
237#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 267# else
241# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
242# endif 269# endif
243#endif 270#endif
244 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
245#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 284# else
249# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
250# endif 286# endif
251#endif 287#endif
… …
288 324
289#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
290# define EV_USE_PORT 0 326# define EV_USE_PORT 0
291#endif 327#endif
292 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
293#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
295# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
296# else 340# else
297# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
338 382
339#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 385#endif
342 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* 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. */ 404/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 406# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
351# else 411# else
… …
354# endif 414# endif
355#endif 415#endif
356 416
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 418
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 419#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
368#endif 422#endif
369 423
… …
377# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
378#endif 432#endif
379 433
380#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
384# endif 446# endif
385#endif 447#endif
386 448
387#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
388# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
394# endif 456# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 457#endif
400 458
401#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 461# include <stdint.h>
… …
443#else 501#else
444# define EV_FREQUENT_CHECK do { } while (0) 502# define EV_FREQUENT_CHECK do { } while (0)
445#endif 503#endif
446 504
447/* 505/*
448 * This is used to avoid floating point rounding problems. 506 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 507 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 508 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 509#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
510/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 511
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 512#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 513#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 514
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 515#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 516#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 517
518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
519/* ECB.H BEGIN */
520/*
521 * libecb - http://software.schmorp.de/pkg/libecb
522 *
523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
524 * Copyright (©) 2011 Emanuele Giaquinta
525 * All rights reserved.
526 *
527 * Redistribution and use in source and binary forms, with or without modifica-
528 * tion, are permitted provided that the following conditions are met:
529 *
530 * 1. Redistributions of source code must retain the above copyright notice,
531 * this list of conditions and the following disclaimer.
532 *
533 * 2. Redistributions in binary form must reproduce the above copyright
534 * notice, this list of conditions and the following disclaimer in the
535 * documentation and/or other materials provided with the distribution.
536 *
537 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
538 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
539 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
540 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
541 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
558 */
559
560#ifndef ECB_H
561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
565
566#ifdef _WIN32
567 typedef signed char int8_t;
568 typedef unsigned char uint8_t;
569 typedef signed short int16_t;
570 typedef unsigned short uint16_t;
571 typedef signed int int32_t;
572 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 573 #if __GNUC__
574 typedef signed long long int64_t;
575 typedef unsigned long long uint64_t;
576 #else /* _MSC_VER || __BORLANDC__ */
577 typedef signed __int64 int64_t;
578 typedef unsigned __int64 uint64_t;
579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
589#else
590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
608#endif
609
610/* many compilers define _GNUC_ to some versions but then only implement
611 * what their idiot authors think are the "more important" extensions,
612 * causing enormous grief in return for some better fake benchmark numbers.
613 * or so.
614 * we try to detect these and simply assume they are not gcc - if they have
615 * an issue with that they should have done it right in the first place.
616 */
617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
618 #define ECB_GCC_VERSION(major,minor) 0
619#else
620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
663
664/*****************************************************************************/
665
666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
668
669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #if __i386 || __i386__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
692 #elif ECB_GCC_AMD64
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
718 #elif defined __s390__ || defined __s390x__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
724 #elif defined __alpha__
725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
726 #elif defined __hppa__
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
729 #elif defined __ia64__
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #endif
738 #endif
739#endif
740
741#ifndef ECB_MEMORY_FENCE
742 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
755 #define ECB_MEMORY_FENCE __sync_synchronize ()
756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
767 #elif defined _WIN32
768 #include <WinNT.h>
769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
771 #include <mbarrier.h>
772 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
775 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync ()
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
794 #endif
795#endif
796
797#ifndef ECB_MEMORY_FENCE
798 #if !ECB_AVOID_PTHREADS
799 /*
800 * if you get undefined symbol references to pthread_mutex_lock,
801 * or failure to find pthread.h, then you should implement
802 * the ECB_MEMORY_FENCE operations for your cpu/compiler
803 * OR provide pthread.h and link against the posix thread library
804 * of your system.
805 */
806 #include <pthread.h>
807 #define ECB_NEEDS_PTHREADS 1
808 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
809
810 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
812 #endif
813#endif
814
815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
817#endif
818
819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
821#endif
822
823/*****************************************************************************/
824
825#if ECB_CPP
826 #define ecb_inline static inline
827#elif ECB_GCC_VERSION(2,5)
828 #define ecb_inline static __inline__
829#elif ECB_C99
830 #define ecb_inline static inline
831#else
832 #define ecb_inline static
833#endif
834
835#if ECB_GCC_VERSION(3,3)
836 #define ecb_restrict __restrict__
837#elif ECB_C99
838 #define ecb_restrict restrict
839#else
840 #define ecb_restrict
841#endif
842
843typedef int ecb_bool;
844
845#define ECB_CONCAT_(a, b) a ## b
846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
847#define ECB_STRINGIFY_(a) # a
848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
850
851#define ecb_function_ ecb_inline
852
853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 871#else
467# define expect(expr,value) (expr) 872 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 873#endif
472#endif
473 874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
877#else
878 #define ecb_prefetch(addr,rw,locality)
879#endif
880
881/* no emulation for ecb_decltype */
882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
887 #define ecb_decltype(x) __typeof__ (x)
888#endif
889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
907 #define ecb_noinline ecb_attribute ((__noinline__))
908#endif
909
910#define ecb_unused ecb_attribute ((__unused__))
911#define ecb_const ecb_attribute ((__const__))
912#define ecb_pure ecb_attribute ((__pure__))
913
914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
922#else
923 #define ecb_noreturn ecb_attribute ((__noreturn__))
924#endif
925
926#if ECB_GCC_VERSION(4,3)
927 #define ecb_artificial ecb_attribute ((__artificial__))
928 #define ecb_hot ecb_attribute ((__hot__))
929 #define ecb_cold ecb_attribute ((__cold__))
930#else
931 #define ecb_artificial
932 #define ecb_hot
933 #define ecb_cold
934#endif
935
936/* put around conditional expressions if you are very sure that the */
937/* expression is mostly true or mostly false. note that these return */
938/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 939#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 940#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
941/* for compatibility to the rest of the world */
942#define ecb_likely(expr) ecb_expect_true (expr)
943#define ecb_unlikely(expr) ecb_expect_false (expr)
944
945/* count trailing zero bits and count # of one bits */
946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
953 #define ecb_ctz32(x) __builtin_ctz (x)
954 #define ecb_ctz64(x) __builtin_ctzll (x)
955 #define ecb_popcount32(x) __builtin_popcount (x)
956 /* no popcountll */
957#else
958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
959 ecb_function_ ecb_const int
960 ecb_ctz32 (uint32_t x)
961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
967 int r = 0;
968
969 x &= ~x + 1; /* this isolates the lowest bit */
970
971#if ECB_branchless_on_i386
972 r += !!(x & 0xaaaaaaaa) << 0;
973 r += !!(x & 0xcccccccc) << 1;
974 r += !!(x & 0xf0f0f0f0) << 2;
975 r += !!(x & 0xff00ff00) << 3;
976 r += !!(x & 0xffff0000) << 4;
977#else
978 if (x & 0xaaaaaaaa) r += 1;
979 if (x & 0xcccccccc) r += 2;
980 if (x & 0xf0f0f0f0) r += 4;
981 if (x & 0xff00ff00) r += 8;
982 if (x & 0xffff0000) r += 16;
983#endif
984
985 return r;
986#endif
987 }
988
989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
990 ecb_function_ ecb_const int
991 ecb_ctz64 (uint64_t x)
992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
998 int shift = x & 0xffffffff ? 0 : 32;
999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
1001 }
1002
1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1004 ecb_function_ ecb_const int
1005 ecb_popcount32 (uint32_t x)
1006 {
1007 x -= (x >> 1) & 0x55555555;
1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
1010 x *= 0x01010101;
1011
1012 return x >> 24;
1013 }
1014
1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
1023 int r = 0;
1024
1025 if (x >> 16) { x >>= 16; r += 16; }
1026 if (x >> 8) { x >>= 8; r += 8; }
1027 if (x >> 4) { x >>= 4; r += 4; }
1028 if (x >> 2) { x >>= 2; r += 2; }
1029 if (x >> 1) { r += 1; }
1030
1031 return r;
1032#endif
1033 }
1034
1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
1043 int r = 0;
1044
1045 if (x >> 32) { x >>= 32; r += 32; }
1046
1047 return r + ecb_ld32 (x);
1048#endif
1049 }
1050#endif
1051
1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1056
1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1059{
1060 return ( (x * 0x0802U & 0x22110U)
1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1062}
1063
1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1066{
1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1070 x = ( x >> 8 ) | ( x << 8);
1071
1072 return x;
1073}
1074
1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1077{
1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1082 x = ( x >> 16 ) | ( x << 16);
1083
1084 return x;
1085}
1086
1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
1088/* so for this version we are lazy */
1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1090ecb_function_ ecb_const int
1091ecb_popcount64 (uint64_t x)
1092{
1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1094}
1095
1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1104
1105ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1106ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1107ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1108ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1113
1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1127#else
1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1129 ecb_function_ ecb_const uint16_t
1130 ecb_bswap16 (uint16_t x)
1131 {
1132 return ecb_rotl16 (x, 8);
1133 }
1134
1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1136 ecb_function_ ecb_const uint32_t
1137 ecb_bswap32 (uint32_t x)
1138 {
1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1140 }
1141
1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1143 ecb_function_ ecb_const uint64_t
1144 ecb_bswap64 (uint64_t x)
1145 {
1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1147 }
1148#endif
1149
1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1151 #define ecb_unreachable() __builtin_unreachable ()
1152#else
1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1156#endif
1157
1158/* try to tell the compiler that some condition is definitely true */
1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1160
1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1162ecb_inline ecb_const uint32_t
1163ecb_byteorder_helper (void)
1164{
1165 /* the union code still generates code under pressure in gcc, */
1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
1187}
1188
1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1193
1194#if ECB_GCC_VERSION(3,0) || ECB_C99
1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1196#else
1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1198#endif
1199
1200#if ECB_CPP
1201 template<typename T>
1202 static inline T ecb_div_rd (T val, T div)
1203 {
1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1205 }
1206 template<typename T>
1207 static inline T ecb_div_ru (T val, T div)
1208 {
1209 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1210 }
1211#else
1212 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1213 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1214#endif
1215
1216#if ecb_cplusplus_does_not_suck
1217 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1218 template<typename T, int N>
1219 static inline int ecb_array_length (const T (&arr)[N])
1220 {
1221 return N;
1222 }
1223#else
1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1225#endif
1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
1532#endif
1533
1534/* ECB.H END */
1535
1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1537/* if your architecture doesn't need memory fences, e.g. because it is
1538 * single-cpu/core, or if you use libev in a project that doesn't use libev
1539 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1540 * libev, in which cases the memory fences become nops.
1541 * alternatively, you can remove this #error and link against libpthread,
1542 * which will then provide the memory fences.
1543 */
1544# error "memory fences not defined for your architecture, please report"
1545#endif
1546
1547#ifndef ECB_MEMORY_FENCE
1548# define ECB_MEMORY_FENCE do { } while (0)
1549# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1550# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1551#endif
1552
1553#define expect_false(cond) ecb_expect_false (cond)
1554#define expect_true(cond) ecb_expect_true (cond)
1555#define noinline ecb_noinline
1556
476#define inline_size static inline 1557#define inline_size ecb_inline
477 1558
478#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
479# define inline_speed static inline 1560# define inline_speed ecb_inline
480#else 1561#else
481# define inline_speed static noinline 1562# define inline_speed noinline static
482#endif 1563#endif
483 1564
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1566
486#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
488#else 1569#else
489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif 1571#endif
491 1572
492#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
493#define EMPTY2(a,b) /* used to suppress some warnings */
494 1574
495typedef ev_watcher *W; 1575typedef ev_watcher *W;
496typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
497typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
498 1578
… …
523# include "ev_win32.c" 1603# include "ev_win32.c"
524#endif 1604#endif
525 1605
526/*****************************************************************************/ 1606/*****************************************************************************/
527 1607
1608#if EV_USE_LINUXAIO
1609# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1610#endif
1611
1612/* define a suitable floor function (only used by periodics atm) */
1613
1614#if EV_USE_FLOOR
1615# include <math.h>
1616# define ev_floor(v) floor (v)
1617#else
1618
1619#include <float.h>
1620
1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
1623static ev_tstamp
1624ev_floor (ev_tstamp v)
1625{
1626 /* the choice of shift factor is not terribly important */
1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1629#else
1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1631#endif
1632
1633 /* argument too large for an unsigned long? */
1634 if (expect_false (v >= shift))
1635 {
1636 ev_tstamp f;
1637
1638 if (v == v - 1.)
1639 return v; /* very large number */
1640
1641 f = shift * ev_floor (v * (1. / shift));
1642 return f + ev_floor (v - f);
1643 }
1644
1645 /* special treatment for negative args? */
1646 if (expect_false (v < 0.))
1647 {
1648 ev_tstamp f = -ev_floor (-v);
1649
1650 return f - (f == v ? 0 : 1);
1651 }
1652
1653 /* fits into an unsigned long */
1654 return (unsigned long)v;
1655}
1656
1657#endif
1658
1659/*****************************************************************************/
1660
528#ifdef __linux 1661#ifdef __linux
529# include <sys/utsname.h> 1662# include <sys/utsname.h>
530#endif 1663#endif
531 1664
1665noinline ecb_cold
532static unsigned int noinline 1666static unsigned int
533ev_linux_version (void) 1667ev_linux_version (void)
534{ 1668{
535#ifdef __linux 1669#ifdef __linux
536 unsigned int v = 0; 1670 unsigned int v = 0;
537 struct utsname buf; 1671 struct utsname buf;
… …
566} 1700}
567 1701
568/*****************************************************************************/ 1702/*****************************************************************************/
569 1703
570#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
571static void noinline 1705noinline ecb_cold
1706static void
572ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
573{ 1708{
574 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
575} 1710}
576#endif 1711#endif
577 1712
578static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
579 1714
1715ecb_cold
580void 1716void
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
582{ 1718{
583 syserr_cb = cb; 1719 syserr_cb = cb;
584} 1720}
585 1721
586static void noinline 1722noinline ecb_cold
1723static void
587ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
588{ 1725{
589 if (!msg) 1726 if (!msg)
590 msg = "(libev) system error"; 1727 msg = "(libev) system error";
591 1728
… …
604 abort (); 1741 abort ();
605 } 1742 }
606} 1743}
607 1744
608static void * 1745static void *
609ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
610{ 1747{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
617 */ 1753 */
618 1754
619 if (size) 1755 if (size)
620 return realloc (ptr, size); 1756 return realloc (ptr, size);
621 1757
622 free (ptr); 1758 free (ptr);
623 return 0; 1759 return 0;
624#endif
625} 1760}
626 1761
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
628 1763
1764ecb_cold
629void 1765void
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
631{ 1767{
632 alloc = cb; 1768 alloc = cb;
633} 1769}
634 1770
635inline_speed void * 1771inline_speed void *
… …
662typedef struct 1798typedef struct
663{ 1799{
664 WL head; 1800 WL head;
665 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
668 unsigned char unused; 1804 unsigned char unused;
669#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
670 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
671#endif 1807#endif
672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
723 #undef VAR 1859 #undef VAR
724 }; 1860 };
725 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
726 1862
727 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1865
730#else 1866#else
731 1867
732 ev_tstamp ev_rt_now; 1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1870 #include "ev_vars.h"
735 #undef VAR 1871 #undef VAR
736 1872
737 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
… …
752 1888
753/*****************************************************************************/ 1889/*****************************************************************************/
754 1890
755#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1892ev_tstamp
757ev_time (void) 1893ev_time (void) EV_NOEXCEPT
758{ 1894{
759#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
761 { 1897 {
762 struct timespec ts; 1898 struct timespec ts;
… …
786 return ev_time (); 1922 return ev_time ();
787} 1923}
788 1924
789#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
790ev_tstamp 1926ev_tstamp
791ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
792{ 1928{
793 return ev_rt_now; 1929 return ev_rt_now;
794} 1930}
795#endif 1931#endif
796 1932
797void 1933void
798ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
799{ 1935{
800 if (delay > 0.) 1936 if (delay > 0.)
801 { 1937 {
802#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
803 struct timespec ts; 1939 struct timespec ts;
804 1940
805 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
808 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
809#else 1947#else
810 struct timeval tv; 1948 struct timeval tv;
811 1949
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1954 select (0, 0, 0, 0, &tv);
817#endif 1955#endif
818 } 1956 }
819} 1957}
820 1958
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1959/*****************************************************************************/
830 1960
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1961#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1962
833/* find a suitable new size for the given array, */ 1963/* find a suitable new size for the given array, */
… …
839 1969
840 do 1970 do
841 ncur <<= 1; 1971 ncur <<= 1;
842 while (cnt > ncur); 1972 while (cnt > ncur);
843 1973
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1976 {
847 ncur *= elem; 1977 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1981 }
852 1982
853 return ncur; 1983 return ncur;
854} 1984}
855 1985
856static noinline void * 1986noinline ecb_cold
1987static void *
857array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1989{
859 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
861} 1992}
862 1993
1994#define array_needsize_noinit(base,count)
1995
863#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1998
866#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
868 { \ 2001 { \
869 int ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
873 } 2006 }
874 2007
… …
886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
887 2020
888/*****************************************************************************/ 2021/*****************************************************************************/
889 2022
890/* dummy callback for pending events */ 2023/* dummy callback for pending events */
891static void noinline 2024noinline
2025static void
892pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 2027{
894} 2028}
895 2029
896void noinline 2030noinline
2031void
897ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
898{ 2033{
899 W w_ = (W)w; 2034 W w_ = (W)w;
900 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
901 2036
902 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
903 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
904 else 2039 else
905 { 2040 {
906 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
908 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
910 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
911} 2048}
912 2049
913inline_speed void 2050inline_speed void
914feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
915{ 2052{
916 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
917 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
918} 2055}
919 2056
920inline_size void 2057inline_size void
921feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
961 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
963} 2100}
964 2101
965void 2102void
966ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
967{ 2104{
968 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
970} 2107}
971 2108
… …
974inline_size void 2111inline_size void
975fd_reify (EV_P) 2112fd_reify (EV_P)
976{ 2113{
977 int i; 2114 int i;
978 2115
2116#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2117 for (i = 0; i < fdchangecnt; ++i)
2118 {
2119 int fd = fdchanges [i];
2120 ANFD *anfd = anfds + fd;
2121
2122 if (anfd->reify & EV__IOFDSET && anfd->head)
2123 {
2124 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2125
2126 if (handle != anfd->handle)
2127 {
2128 unsigned long arg;
2129
2130 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2131
2132 /* handle changed, but fd didn't - we need to do it in two steps */
2133 backend_modify (EV_A_ fd, anfd->events, 0);
2134 anfd->events = 0;
2135 anfd->handle = handle;
2136 }
2137 }
2138 }
2139#endif
2140
979 for (i = 0; i < fdchangecnt; ++i) 2141 for (i = 0; i < fdchangecnt; ++i)
980 { 2142 {
981 int fd = fdchanges [i]; 2143 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 2144 ANFD *anfd = anfds + fd;
983 ev_io *w; 2145 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 2147 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 2148 unsigned char o_reify = anfd->reify;
987 2149
988 anfd->reify = 0; 2150 anfd->reify = 0;
989 2151
990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
991 if (o_reify & EV__IOFDSET)
992 {
993 unsigned long arg;
994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
997 }
998#endif
999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2152 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 2153 {
1002 anfd->events = 0; 2154 anfd->events = 0;
1003 2155
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2156 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1014 2166
1015 fdchangecnt = 0; 2167 fdchangecnt = 0;
1016} 2168}
1017 2169
1018/* something about the given fd changed */ 2170/* something about the given fd changed */
1019inline_size void 2171inline_size
2172void
1020fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1021{ 2174{
1022 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1023 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1024 2177
1025 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1026 { 2179 {
1027 ++fdchangecnt; 2180 ++fdchangecnt;
1028 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1029 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1030 } 2183 }
1031} 2184}
1032 2185
1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void 2187inline_speed ecb_cold void
1035fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1036{ 2189{
1037 ev_io *w; 2190 ev_io *w;
1038 2191
1039 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1043 } 2196 }
1044} 2197}
1045 2198
1046/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 2200inline_size ecb_cold int
1048fd_valid (int fd) 2201fd_valid (int fd)
1049{ 2202{
1050#ifdef _WIN32 2203#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 2205#else
1053 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1054#endif 2207#endif
1055} 2208}
1056 2209
1057/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1058static void noinline 2211noinline ecb_cold
2212static void
1059fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1060{ 2214{
1061 int fd; 2215 int fd;
1062 2216
1063 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1067} 2221}
1068 2222
1069/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1070static void noinline 2224noinline ecb_cold
2225static void
1071fd_enomem (EV_P) 2226fd_enomem (EV_P)
1072{ 2227{
1073 int fd; 2228 int fd;
1074 2229
1075 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1079 break; 2234 break;
1080 } 2235 }
1081} 2236}
1082 2237
1083/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1084static void noinline 2239noinline
2240static void
1085fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1086{ 2242{
1087 int fd; 2243 int fd;
1088 2244
1089 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1270 2426
1271/*****************************************************************************/ 2427/*****************************************************************************/
1272 2428
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 2430
1275static void noinline 2431noinline ecb_cold
2432static void
1276evpipe_init (EV_P) 2433evpipe_init (EV_P)
1277{ 2434{
1278 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1279 { 2436 {
2437 int fds [2];
2438
1280# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1281 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1282 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1283 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1284 2444
1285 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1286 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1287 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1288 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1289 ev_io_set (&pipe_w, evfd, EV_READ); 2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
2477inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481
2482 if (expect_true (*flag))
2483 return;
2484
2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
2501#if EV_USE_EVENTFD
2502 if (evpipe [0] < 0)
2503 {
2504 uint64_t counter = 1;
2505 write (evpipe [1], &counter, sizeof (uint64_t));
1290 } 2506 }
1291 else 2507 else
1292# endif 2508#endif
1293 { 2509 {
1294 while (pipe (evpipe)) 2510#ifdef _WIN32
1295 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1296 2512 DWORD sent;
1297 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1298 fd_intern (evpipe [1]); 2514 buf.len = 1;
1299 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2516#else
2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1300 } 2519 }
1301
1302 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 }
1305}
1306
1307inline_size void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{
1310 if (!*flag)
1311 {
1312 int old_errno = errno; /* save errno because write might clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316
1317#if EV_USE_EVENTFD
1318 if (evfd >= 0)
1319 {
1320 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t));
1322 }
1323 else
1324#endif
1325 /* win32 people keep sending patches that change this write() to send() */
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1327 /* so when you think this write should be a send instead, please find out */
1328 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */
1330 write (evpipe [1], &dummy, 1);
1331 2520
1332 errno = old_errno; 2521 errno = old_errno;
1333 } 2522 }
1334} 2523}
1335 2524
… …
1338static void 2527static void
1339pipecb (EV_P_ ev_io *iow, int revents) 2528pipecb (EV_P_ ev_io *iow, int revents)
1340{ 2529{
1341 int i; 2530 int i;
1342 2531
2532 if (revents & EV_READ)
2533 {
1343#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1344 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1345 { 2536 {
1346 uint64_t counter; 2537 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1348 } 2539 }
1349 else 2540 else
1350#endif 2541#endif
1351 { 2542 {
1352 char dummy; 2543 char dummy[4];
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1354 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
2554 }
1355 } 2555 }
2556
2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1356 2560
1357#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 2562 if (sig_pending)
1359 { 2563 {
1360 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1361 2567
1362 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1365 } 2571 }
… …
1367 2573
1368#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1369 if (async_pending) 2575 if (async_pending)
1370 { 2576 {
1371 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1372 2580
1373 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1374 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1375 { 2583 {
1376 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1377 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1378 } 2587 }
1379 } 2588 }
1380#endif 2589#endif
1381} 2590}
1382 2591
1383/*****************************************************************************/ 2592/*****************************************************************************/
1384 2593
1385void 2594void
1386ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1387{ 2596{
1388#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1389 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1390 2601
1391 if (!EV_A) 2602 if (!EV_A)
1392 return; 2603 return;
1393#endif 2604#endif
1394 2605
… …
1404#endif 2615#endif
1405 2616
1406 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1407} 2618}
1408 2619
1409void noinline 2620noinline
2621void
1410ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1411{ 2623{
1412 WL w; 2624 WL w;
1413 2625
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1415 return; 2627 return;
1416 2628
1417 --signum; 2629 --signum;
1418 2630
1419#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1423 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1424 return; 2636 return;
1425#endif 2637#endif
1426 2638
1427 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1428 2641
1429 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1430 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1431} 2644}
1432 2645
… …
1523# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1524#endif 2737#endif
1525#if EV_USE_EPOLL 2738#if EV_USE_EPOLL
1526# include "ev_epoll.c" 2739# include "ev_epoll.c"
1527#endif 2740#endif
2741#if EV_USE_LINUXAIO
2742# include "ev_linuxaio.c"
2743#endif
1528#if EV_USE_POLL 2744#if EV_USE_POLL
1529# include "ev_poll.c" 2745# include "ev_poll.c"
1530#endif 2746#endif
1531#if EV_USE_SELECT 2747#if EV_USE_SELECT
1532# include "ev_select.c" 2748# include "ev_select.c"
1533#endif 2749#endif
1534 2750
1535int 2751ecb_cold int
1536ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1537{ 2753{
1538 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1539} 2755}
1540 2756
1541int 2757ecb_cold int
1542ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1543{ 2759{
1544 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
1545} 2761}
1546 2762
1547/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
1548int inline_size 2764inline_size ecb_cold int
1549enable_secure (void) 2765enable_secure (void)
1550{ 2766{
1551#ifdef _WIN32 2767#ifdef _WIN32
1552 return 0; 2768 return 0;
1553#else 2769#else
1554 return getuid () != geteuid () 2770 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2771 || getgid () != getegid ();
1556#endif 2772#endif
1557} 2773}
1558 2774
2775ecb_cold
1559unsigned int 2776unsigned int
1560ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
1561{ 2778{
1562 unsigned int flags = 0; 2779 unsigned int flags = 0;
1563 2780
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1566 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1567 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1569 2787
1570 return flags; 2788 return flags;
1571} 2789}
1572 2790
2791ecb_cold
1573unsigned int 2792unsigned int
1574ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
1575{ 2794{
1576 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
1577 2796
1578#ifndef __NetBSD__ 2797#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
1587#endif 2806#endif
1588#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
1589 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1590#endif 2809#endif
1591 2810
2811 /* TODO: linuxaio is very experimental */
2812 flags &= ~EVBACKEND_LINUXAIO;
2813
1592 return flags; 2814 return flags;
1593} 2815}
1594 2816
2817ecb_cold
1595unsigned int 2818unsigned int
1596ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1597{ 2820{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2822
1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1601 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1603 2826
1604 return flags; 2827 return flags;
1605} 2828}
1606 2829
1607unsigned int 2830unsigned int
1608ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1609{ 2832{
1610 return backend; 2833 return backend;
1611} 2834}
1612 2835
1613#if EV_FEATURE_API 2836#if EV_FEATURE_API
1614unsigned int 2837unsigned int
1615ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1616{ 2839{
1617 return loop_count; 2840 return loop_count;
1618} 2841}
1619 2842
1620unsigned int 2843unsigned int
1621ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1622{ 2845{
1623 return loop_depth; 2846 return loop_depth;
1624} 2847}
1625 2848
1626void 2849void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1628{ 2851{
1629 io_blocktime = interval; 2852 io_blocktime = interval;
1630} 2853}
1631 2854
1632void 2855void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1634{ 2857{
1635 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1636} 2859}
1637 2860
1638void 2861void
1639ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1640{ 2863{
1641 userdata = data; 2864 userdata = data;
1642} 2865}
1643 2866
1644void * 2867void *
1645ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1646{ 2869{
1647 return userdata; 2870 return userdata;
1648} 2871}
1649 2872
2873void
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1651{ 2875{
1652 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1653} 2877}
1654 2878
2879void
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1656{ 2881{
1657 release_cb = release; 2882 release_cb = release;
1658 acquire_cb = acquire; 2883 acquire_cb = acquire;
1659} 2884}
1660#endif 2885#endif
1661 2886
1662/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2888noinline ecb_cold
2889static void
1664loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1665{ 2891{
1666 if (!backend) 2892 if (!backend)
1667 { 2893 {
1668 origflags = flags; 2894 origflags = flags;
1669 2895
… …
1696 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2923 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2926
1701 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2928 mn_now = get_clock ();
1703 now_floor = mn_now; 2929 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2931#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1707#endif 2933#endif
1708 2934
1709 io_blocktime = 0.; 2935 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1711 backend = 0; 2937 backend = 0;
1712 backend_fd = -1; 2938 backend_fd = -1;
1713 sig_pending = 0; 2939 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2941 async_pending = 0;
1716#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1717#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2949#endif
1720#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2952#endif
1723 2953
1724 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1726 2956
1727#if EV_USE_IOCP 2957#if EV_USE_IOCP
1728 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1729#endif 2959#endif
1730#if EV_USE_PORT 2960#if EV_USE_PORT
1731 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1732#endif 2962#endif
1733#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1734 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1735#endif 2968#endif
1736#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1737 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1738#endif 2971#endif
1739#if EV_USE_POLL 2972#if EV_USE_POLL
1740 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1741#endif 2974#endif
1742#if EV_USE_SELECT 2975#if EV_USE_SELECT
1743 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1744#endif 2977#endif
1745 2978
1746 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1747 2980
1748#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1751#endif 2984#endif
1752 } 2985 }
1753} 2986}
1754 2987
1755/* free up a loop structure */ 2988/* free up a loop structure */
2989ecb_cold
1756void 2990void
1757ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1758{ 2992{
1759 int i; 2993 int i;
1760 2994
… …
1772 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
1773 } 3007 }
1774#endif 3008#endif
1775 3009
1776#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
1777 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1778 { 3012 {
1779 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
1780 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
1781 } 3015 }
1782#endif 3016#endif
… …
1784 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1785 { 3019 {
1786 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1787 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1788 3022
1789#if EV_USE_EVENTFD
1790 if (evfd >= 0)
1791 close (evfd);
1792#endif
1793
1794 if (evpipe [0] >= 0)
1795 {
1796 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1797 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1798 }
1799 } 3025 }
1800 3026
1801#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1802 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1803 close (sigfd); 3029 close (sigfd);
… …
1810 3036
1811 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1812 close (backend_fd); 3038 close (backend_fd);
1813 3039
1814#if EV_USE_IOCP 3040#if EV_USE_IOCP
1815 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1816#endif 3042#endif
1817#if EV_USE_PORT 3043#if EV_USE_PORT
1818 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1819#endif 3045#endif
1820#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1821 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1822#endif 3051#endif
1823#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1824 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1825#endif 3054#endif
1826#if EV_USE_POLL 3055#if EV_USE_POLL
1827 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1828#endif 3057#endif
1829#if EV_USE_SELECT 3058#if EV_USE_SELECT
1830 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1831#endif 3060#endif
1832 3061
1833 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1834 { 3063 {
1835 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1877 3106
1878inline_size void 3107inline_size void
1879loop_fork (EV_P) 3108loop_fork (EV_P)
1880{ 3109{
1881#if EV_USE_PORT 3110#if EV_USE_PORT
1882 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1883#endif 3112#endif
1884#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1885 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1886#endif 3118#endif
1887#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1888 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1889#endif 3121#endif
1890#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1891 infy_fork (EV_A); 3123 infy_fork (EV_A);
1892#endif 3124#endif
1893 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1894 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1895 { 3128 {
1896 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1897 /* while we modify the fd vars */
1898 sig_pending = 1;
1899#if EV_ASYNC_ENABLE
1900 async_pending = 1;
1901#endif
1902 3130
1903 ev_ref (EV_A); 3131 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1905 3133
1906#if EV_USE_EVENTFD
1907 if (evfd >= 0)
1908 close (evfd);
1909#endif
1910
1911 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1912 {
1913 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1914 EV_WIN32_CLOSE_FD (evpipe [1]);
1915 }
1916 3136
1917#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1918 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1919 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1920 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1921#endif
1922 } 3140 }
3141#endif
1923 3142
1924 postfork = 0; 3143 postfork = 0;
1925} 3144}
1926 3145
1927#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1928 3147
3148ecb_cold
1929struct ev_loop * 3149struct ev_loop *
1930ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1931{ 3151{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 3153
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
1942} 3162}
1943 3163
1944#endif /* multiplicity */ 3164#endif /* multiplicity */
1945 3165
1946#if EV_VERIFY 3166#if EV_VERIFY
1947static void noinline 3167noinline ecb_cold
3168static void
1948verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1949{ 3170{
1950 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1951 3172
1952 if (w->pending) 3173 if (w->pending)
1953 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1954} 3175}
1955 3176
1956static void noinline 3177noinline ecb_cold
3178static void
1957verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1958{ 3180{
1959 int i; 3181 int i;
1960 3182
1961 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 3188
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 3190 }
1969} 3191}
1970 3192
1971static void noinline 3193noinline ecb_cold
3194static void
1972array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1973{ 3196{
1974 while (cnt--) 3197 while (cnt--)
1975 { 3198 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 3201 }
1979} 3202}
1980#endif 3203#endif
1981 3204
1982#if EV_FEATURE_API 3205#if EV_FEATURE_API
1983void 3206void ecb_cold
1984ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
1985{ 3208{
1986#if EV_VERIFY 3209#if EV_VERIFY
1987 int i; 3210 int i;
1988 WL w; 3211 WL w, w2;
1989 3212
1990 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
1991 3214
1992 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
1993 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
1994 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1995 3218
1996 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
1997 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
1998 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
1999 { 3225 {
2000 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
2001 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2002 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2003 } 3236 }
3237 }
2004 3238
2005 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2006 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2007 3241
2008#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2054#endif 3288#endif
2055} 3289}
2056#endif 3290#endif
2057 3291
2058#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2059struct ev_loop * 3294struct ev_loop *
2060#else 3295#else
2061int 3296int
2062#endif 3297#endif
2063ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2064{ 3299{
2065 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2066 { 3301 {
2067#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 3322
2088 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2089} 3324}
2090 3325
2091void 3326void
2092ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2093{ 3328{
2094 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2095} 3330}
2096 3331
2097/*****************************************************************************/ 3332/*****************************************************************************/
2098 3333
2099void 3334void
… …
2101{ 3336{
2102 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2103} 3338}
2104 3339
2105unsigned int 3340unsigned int
2106ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2107{ 3342{
2108 int pri; 3343 int pri;
2109 unsigned int count = 0; 3344 unsigned int count = 0;
2110 3345
2111 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2112 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2113 3348
2114 return count; 3349 return count;
2115} 3350}
2116 3351
2117void noinline 3352noinline
3353void
2118ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2119{ 3355{
2120 int pri; 3356 pendingpri = NUMPRI;
2121 3357
2122 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2123 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2124 { 3364 {
2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2126 3366
2127 p->w->pending = 0; 3367 p->w->pending = 0;
2128 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2129 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2130 } 3370 }
3371 }
3372 while (pendingpri);
2131} 3373}
2132 3374
2133#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2134/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2135/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
2193 } 3435 }
2194} 3436}
2195 3437
2196#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2197 3439
2198inline_speed 3440noinline
3441static void
2199periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2200{ 3443{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2203 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3446
3447 /* the above almost always errs on the low side */
3448 while (at <= ev_rt_now)
3449 {
3450 ev_tstamp nat = at + w->interval;
3451
3452 /* when resolution fails us, we use ev_rt_now */
3453 if (expect_false (nat == at))
3454 {
3455 at = ev_rt_now;
3456 break;
3457 }
3458
3459 at = nat;
3460 }
3461
3462 ev_at (w) = at;
2204} 3463}
2205 3464
2206/* make periodics pending */ 3465/* make periodics pending */
2207inline_size void 3466inline_size void
2208periodics_reify (EV_P) 3467periodics_reify (EV_P)
2209{ 3468{
2210 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2211 3470
2212 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2213 { 3472 {
2214 int feed_count = 0;
2215
2216 do 3473 do
2217 { 3474 {
2218 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2219 3476
2220 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2230 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2231 } 3488 }
2232 else if (w->interval) 3489 else if (w->interval)
2233 { 3490 {
2234 periodic_recalc (EV_A_ w); 3491 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2251 } 3494 }
2252 else 3495 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 3504 }
2262} 3505}
2263 3506
2264/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 3509noinline ecb_cold
3510static void
2267periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2268{ 3512{
2269 int i; 3513 int i;
2270 3514
2271 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2285} 3529}
2286#endif 3530#endif
2287 3531
2288/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2289static void noinline 3533noinline ecb_cold
3534static void
2290timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 3536{
2292 int i; 3537 int i;
2293 3538
2294 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 3576 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2333 */ 3578 */
2334 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2335 { 3580 {
3581 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2337 3583
3584 diff = odiff - rtmn_diff;
3585
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 3587 return; /* all is well */
2340 3588
2341 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 3590 mn_now = get_clock ();
2343 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2365 3613
2366 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2367 } 3615 }
2368} 3616}
2369 3617
2370void 3618int
2371ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2372{ 3620{
2373#if EV_FEATURE_API 3621#if EV_FEATURE_API
2374 ++loop_depth; 3622 ++loop_depth;
2375#endif 3623#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3681 ev_tstamp prev_mn_now = mn_now;
2434 3682
2435 /* update time to cancel out callback processing overhead */ 3683 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3684 time_update (EV_A_ 1e100);
2437 3685
3686 /* from now on, we want a pipe-wake-up */
3687 pipe_write_wanted = 1;
3688
3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3690
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3691 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3692 {
2440 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2441 3694
2442 if (timercnt) 3695 if (timercnt)
2443 { 3696 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2446 } 3699 }
2447 3700
2448#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3702 if (periodiccnt)
2450 { 3703 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2453 } 3706 }
2454#endif 3707#endif
2455 3708
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3710 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
3712
3713 /* at this point, we NEED to wait, so we have to ensure */
3714 /* to pass a minimum nonzero value to the backend */
3715 if (expect_false (waittime < backend_mintime))
3716 waittime = backend_mintime;
2459 3717
2460 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3719 if (expect_false (io_blocktime))
2462 { 3720 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3722
2465 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2467 3725
2468 if (expect_true (sleeptime > 0.)) 3726 if (expect_true (sleeptime > 0.))
2469 { 3727 {
2470 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3729 waittime -= sleeptime;
… …
2478#endif 3736#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3740
3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
3744 if (pipe_write_skipped)
3745 {
3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3748 }
3749
3750
2483 /* update ev_rt_now, do magic */ 3751 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3752 time_update (EV_A_ waittime + sleeptime);
2485 } 3753 }
2486 3754
2487 /* queue pending timers and reschedule them */ 3755 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
2514 3782
2515#if EV_FEATURE_API 3783#if EV_FEATURE_API
2516 --loop_depth; 3784 --loop_depth;
2517#endif 3785#endif
2518}
2519 3786
3787 return activecnt;
3788}
3789
2520void 3790void
2521ev_break (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
2522{ 3792{
2523 loop_done = how; 3793 loop_done = how;
2524} 3794}
2525 3795
2526void 3796void
2527ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
2528{ 3798{
2529 ++activecnt; 3799 ++activecnt;
2530} 3800}
2531 3801
2532void 3802void
2533ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
2534{ 3804{
2535 --activecnt; 3805 --activecnt;
2536} 3806}
2537 3807
2538void 3808void
2539ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
2540{ 3810{
2541 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
2542} 3812}
2543 3813
2544void 3814void
2545ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
2546{ 3816{
2547 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
2548} 3818}
2549 3819
2550void 3820void
2551ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
2552{ 3822{
2553 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
2554 3824
2555 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3865 w->pending = 0;
2596 } 3866 }
2597} 3867}
2598 3868
2599int 3869int
2600ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2601{ 3871{
2602 W w_ = (W)w; 3872 W w_ = (W)w;
2603 int pending = w_->pending; 3873 int pending = w_->pending;
2604 3874
2605 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
2637 w->active = 0; 3907 w->active = 0;
2638} 3908}
2639 3909
2640/*****************************************************************************/ 3910/*****************************************************************************/
2641 3911
2642void noinline 3912noinline
3913void
2643ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2644{ 3915{
2645 int fd = w->fd; 3916 int fd = w->fd;
2646 3917
2647 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
2648 return; 3919 return;
… …
2651 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3922 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2652 3923
2653 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2654 3925
2655 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2657 wlist_add (&anfds[fd].head, (WL)w); 3928 wlist_add (&anfds[fd].head, (WL)w);
3929
3930 /* common bug, apparently */
3931 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2658 3932
2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3933 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2660 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
2661 3935
2662 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
2663} 3937}
2664 3938
2665void noinline 3939noinline
3940void
2666ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2667{ 3942{
2668 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2670 return; 3945 return;
2671 3946
… …
2679 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2680 3955
2681 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
2682} 3957}
2683 3958
2684void noinline 3959noinline
3960void
2685ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2686{ 3962{
2687 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2688 return; 3964 return;
2689 3965
2690 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
2693 3969
2694 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2695 3971
2696 ++timercnt; 3972 ++timercnt;
2697 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2698 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2699 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
2700 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
2701 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
2702 3978
2703 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
2704 3980
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3981 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3982}
2707 3983
2708void noinline 3984noinline
3985void
2709ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2710{ 3987{
2711 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
2713 return; 3990 return;
2714 3991
… …
2733 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2734 4011
2735 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
2736} 4013}
2737 4014
2738void noinline 4015noinline
4016void
2739ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2740{ 4018{
2741 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
2742 4022
2743 if (ev_is_active (w)) 4023 if (ev_is_active (w))
2744 { 4024 {
2745 if (w->repeat) 4025 if (w->repeat)
2746 { 4026 {
… …
2759 4039
2760 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2761} 4041}
2762 4042
2763ev_tstamp 4043ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2765{ 4045{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 4047}
2768 4048
2769#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
2770void noinline 4050noinline
4051void
2771ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2772{ 4053{
2773 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
2774 return; 4055 return;
2775 4056
2776 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
… …
2785 4066
2786 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2787 4068
2788 ++periodiccnt; 4069 ++periodiccnt;
2789 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2790 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2791 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2792 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
2793 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
2794 4075
2795 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2796 4077
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4078 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 4079}
2799 4080
2800void noinline 4081noinline
4082void
2801ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2802{ 4084{
2803 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
2805 return; 4087 return;
2806 4088
… …
2823 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
2824 4106
2825 EV_FREQUENT_CHECK; 4107 EV_FREQUENT_CHECK;
2826} 4108}
2827 4109
2828void noinline 4110noinline
4111void
2829ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2830{ 4113{
2831 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
2834} 4117}
… …
2838# define SA_RESTART 0 4121# define SA_RESTART 0
2839#endif 4122#endif
2840 4123
2841#if EV_SIGNAL_ENABLE 4124#if EV_SIGNAL_ENABLE
2842 4125
2843void noinline 4126noinline
4127void
2844ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2845{ 4129{
2846 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
2847 return; 4131 return;
2848 4132
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4133 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2851#if EV_MULTIPLICITY 4135#if EV_MULTIPLICITY
2852 assert (("libev: a signal must not be attached to two different loops", 4136 assert (("libev: a signal must not be attached to two different loops",
2853 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4137 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2854 4138
2855 signals [w->signum - 1].loop = EV_A; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
2856#endif 4141#endif
2857 4142
2858 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2859 4144
2860#if EV_USE_SIGNALFD 4145#if EV_USE_SIGNALFD
… …
2919 } 4204 }
2920 4205
2921 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
2922} 4207}
2923 4208
2924void noinline 4209noinline
4210void
2925ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2926{ 4212{
2927 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
2929 return; 4215 return;
2930 4216
… …
2961#endif 4247#endif
2962 4248
2963#if EV_CHILD_ENABLE 4249#if EV_CHILD_ENABLE
2964 4250
2965void 4251void
2966ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2967{ 4253{
2968#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4255 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 4256#endif
2971 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
… …
2978 4264
2979 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2980} 4266}
2981 4267
2982void 4268void
2983ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2984{ 4270{
2985 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
2987 return; 4273 return;
2988 4274
… …
3005 4291
3006#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
3007#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3008#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
3009 4295
3010static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4296noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3011 4297
3012#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
3013 4299
3014/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4300/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3015# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3016 4302
3017static void noinline 4303noinline
4304static void
3018infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
3019{ 4306{
3020 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); 4307 w->wd = inotify_add_watch (fs_fd, w->path,
4308 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4309 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4310 | IN_DONT_FOLLOW | IN_MASK_ADD);
3021 4311
3022 if (w->wd >= 0) 4312 if (w->wd >= 0)
3023 { 4313 {
3024 struct statfs sfs; 4314 struct statfs sfs;
3025 4315
… …
3029 4319
3030 if (!fs_2625) 4320 if (!fs_2625)
3031 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4321 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3032 else if (!statfs (w->path, &sfs) 4322 else if (!statfs (w->path, &sfs)
3033 && (sfs.f_type == 0x1373 /* devfs */ 4323 && (sfs.f_type == 0x1373 /* devfs */
4324 || sfs.f_type == 0x4006 /* fat */
4325 || sfs.f_type == 0x4d44 /* msdos */
3034 || sfs.f_type == 0xEF53 /* ext2/3 */ 4326 || sfs.f_type == 0xEF53 /* ext2/3 */
4327 || sfs.f_type == 0x72b6 /* jffs2 */
4328 || sfs.f_type == 0x858458f6 /* ramfs */
4329 || sfs.f_type == 0x5346544e /* ntfs */
3035 || sfs.f_type == 0x3153464a /* jfs */ 4330 || sfs.f_type == 0x3153464a /* jfs */
4331 || sfs.f_type == 0x9123683e /* btrfs */
3036 || sfs.f_type == 0x52654973 /* reiser3 */ 4332 || sfs.f_type == 0x52654973 /* reiser3 */
3037 || sfs.f_type == 0x01021994 /* tempfs */ 4333 || sfs.f_type == 0x01021994 /* tmpfs */
3038 || sfs.f_type == 0x58465342 /* xfs */)) 4334 || sfs.f_type == 0x58465342 /* xfs */))
3039 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4335 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3040 else 4336 else
3041 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4337 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3042 } 4338 }
… …
3063 if (!pend || pend == path) 4359 if (!pend || pend == path)
3064 break; 4360 break;
3065 4361
3066 *pend = 0; 4362 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 4363 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 4364 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4365 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 4366 }
3071 } 4367 }
3072 4368
3073 if (w->wd >= 0) 4369 if (w->wd >= 0)
… …
3077 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3078 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
3079 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3080} 4376}
3081 4377
3082static void noinline 4378noinline
4379static void
3083infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
3084{ 4381{
3085 int slot; 4382 int slot;
3086 int wd = w->wd; 4383 int wd = w->wd;
3087 4384
… …
3094 4391
3095 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
3096 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
3097} 4394}
3098 4395
3099static void noinline 4396noinline
4397static void
3100infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3101{ 4399{
3102 if (slot < 0) 4400 if (slot < 0)
3103 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
3104 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4438 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 4439 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 4440 }
3143} 4441}
3144 4442
3145inline_size void 4443inline_size ecb_cold
4444void
3146ev_check_2625 (EV_P) 4445ev_check_2625 (EV_P)
3147{ 4446{
3148 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4448 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 4449 */
… …
3155} 4454}
3156 4455
3157inline_size int 4456inline_size int
3158infy_newfd (void) 4457infy_newfd (void)
3159{ 4458{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4459#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4460 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 4461 if (fd >= 0)
3163 return fd; 4462 return fd;
3164#endif 4463#endif
3165 return inotify_init (); 4464 return inotify_init ();
… …
3240#else 4539#else
3241# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 4541#endif
3243 4542
3244void 4543void
3245ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3246{ 4545{
3247 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
3251} 4550}
3252 4551
3253static void noinline 4552noinline
4553static void
3254stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3255{ 4555{
3256 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3257 4557
3258 ev_statdata prev = w->attr; 4558 ev_statdata prev = w->attr;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 4590 }
3291} 4591}
3292 4592
3293void 4593void
3294ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3295{ 4595{
3296 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
3297 return; 4597 return;
3298 4598
3299 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
3320 4620
3321 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3322} 4622}
3323 4623
3324void 4624void
3325ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3326{ 4626{
3327 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3329 return; 4629 return;
3330 4630
… …
3346} 4646}
3347#endif 4647#endif
3348 4648
3349#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
3350void 4650void
3351ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3352{ 4652{
3353 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3354 return; 4654 return;
3355 4655
3356 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
3361 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
3362 4662
3363 ++idleall; 4663 ++idleall;
3364 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
3365 4665
3366 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4666 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3367 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
3368 } 4668 }
3369 4669
3370 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
3371} 4671}
3372 4672
3373void 4673void
3374ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3375{ 4675{
3376 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
3378 return; 4678 return;
3379 4679
… …
3393} 4693}
3394#endif 4694#endif
3395 4695
3396#if EV_PREPARE_ENABLE 4696#if EV_PREPARE_ENABLE
3397void 4697void
3398ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3399{ 4699{
3400 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
3401 return; 4701 return;
3402 4702
3403 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
3404 4704
3405 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
3406 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3407 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
3408 4708
3409 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
3410} 4710}
3411 4711
3412void 4712void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3414{ 4714{
3415 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
3417 return; 4717 return;
3418 4718
… …
3431} 4731}
3432#endif 4732#endif
3433 4733
3434#if EV_CHECK_ENABLE 4734#if EV_CHECK_ENABLE
3435void 4735void
3436ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3437{ 4737{
3438 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
3439 return; 4739 return;
3440 4740
3441 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
3442 4742
3443 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
3444 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3445 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
3446 4746
3447 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
3448} 4748}
3449 4749
3450void 4750void
3451ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3452{ 4752{
3453 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
3455 return; 4755 return;
3456 4756
… …
3468 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
3469} 4769}
3470#endif 4770#endif
3471 4771
3472#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
3473void noinline 4773noinline
4774void
3474ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3475{ 4776{
3476 ev_run (w->other, EVRUN_NOWAIT); 4777 ev_run (w->other, EVRUN_NOWAIT);
3477} 4778}
3478 4779
3479static void 4780static void
… …
3527 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
3528} 4829}
3529#endif 4830#endif
3530 4831
3531void 4832void
3532ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3533{ 4834{
3534 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
3535 return; 4836 return;
3536 4837
3537 { 4838 {
… …
3558 4859
3559 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
3560} 4861}
3561 4862
3562void 4863void
3563ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3564{ 4865{
3565 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
3567 return; 4868 return;
3568 4869
… …
3578} 4879}
3579#endif 4880#endif
3580 4881
3581#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
3582void 4883void
3583ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3584{ 4885{
3585 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
3586 return; 4887 return;
3587 4888
3588 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
3589 4890
3590 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
3591 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3592 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
3593 4894
3594 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3595} 4896}
3596 4897
3597void 4898void
3598ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3599{ 4900{
3600 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
3602 return; 4903 return;
3603 4904
… …
3616} 4917}
3617#endif 4918#endif
3618 4919
3619#if EV_CLEANUP_ENABLE 4920#if EV_CLEANUP_ENABLE
3620void 4921void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3622{ 4923{
3623 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
3624 return; 4925 return;
3625 4926
3626 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
3627 4928
3628 ev_start (EV_A_ (W)w, ++cleanupcnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
3629 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3630 cleanups [cleanupcnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
3631 4932
3632 /* cleanup watchers should never keep a refcount on the loop */ 4933 /* cleanup watchers should never keep a refcount on the loop */
3633 ev_unref (EV_A); 4934 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
3635} 4936}
3636 4937
3637void 4938void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3639{ 4940{
3640 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
3642 return; 4943 return;
3643 4944
… …
3657} 4958}
3658#endif 4959#endif
3659 4960
3660#if EV_ASYNC_ENABLE 4961#if EV_ASYNC_ENABLE
3661void 4962void
3662ev_async_start (EV_P_ ev_async *w) 4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3663{ 4964{
3664 if (expect_false (ev_is_active (w))) 4965 if (expect_false (ev_is_active (w)))
3665 return; 4966 return;
3666 4967
3667 w->sent = 0; 4968 w->sent = 0;
… …
3669 evpipe_init (EV_A); 4970 evpipe_init (EV_A);
3670 4971
3671 EV_FREQUENT_CHECK; 4972 EV_FREQUENT_CHECK;
3672 4973
3673 ev_start (EV_A_ (W)w, ++asynccnt); 4974 ev_start (EV_A_ (W)w, ++asynccnt);
3674 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4975 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3675 asyncs [asynccnt - 1] = w; 4976 asyncs [asynccnt - 1] = w;
3676 4977
3677 EV_FREQUENT_CHECK; 4978 EV_FREQUENT_CHECK;
3678} 4979}
3679 4980
3680void 4981void
3681ev_async_stop (EV_P_ ev_async *w) 4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3682{ 4983{
3683 clear_pending (EV_A_ (W)w); 4984 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4985 if (expect_false (!ev_is_active (w)))
3685 return; 4986 return;
3686 4987
… …
3697 4998
3698 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3699} 5000}
3700 5001
3701void 5002void
3702ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3703{ 5004{
3704 w->sent = 1; 5005 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 5006 evpipe_write (EV_A_ &async_pending);
3706} 5007}
3707#endif 5008#endif
… …
3744 5045
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5046 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 5047}
3747 5048
3748void 5049void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5050ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3750{ 5051{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5052 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752
3753 if (expect_false (!once))
3754 {
3755 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3756 return;
3757 }
3758 5053
3759 once->cb = cb; 5054 once->cb = cb;
3760 once->arg = arg; 5055 once->arg = arg;
3761 5056
3762 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
3775} 5070}
3776 5071
3777/*****************************************************************************/ 5072/*****************************************************************************/
3778 5073
3779#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
5075ecb_cold
3780void 5076void
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5077ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3782{ 5078{
3783 int i, j; 5079 int i, j;
3784 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
3785 5081
3786 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5125 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 5126#endif
3831 5127
3832#if EV_IDLE_ENABLE 5128#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 5129 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 5130 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 5131 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 5132 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 5133#endif
3838 5134
3839#if EV_FORK_ENABLE 5135#if EV_FORK_ENABLE
… …
3892 5188
3893#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
3895#endif 5191#endif
3896 5192
3897EV_CPP(})
3898

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