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Comparing libev/ev.c (file contents):
Revision 1.372 by root, Wed Feb 16 08:02:50 2011 UTC vs.
Revision 1.492 by root, Sat Jun 22 16:25:53 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 *
… …
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
403#if EV_USE_LINUXAIO
404# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
405#endif
406
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 407/* 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. */ 408/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 409#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 410# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 411# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 412# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 413# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 414# define EV_USE_MONOTONIC 1
351# else 415# else
… …
354# endif 418# endif
355#endif 419#endif
356 420
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 421/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 422
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 423#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 424# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 425# define EV_USE_MONOTONIC 0
368#endif 426#endif
369 427
… …
377# define EV_USE_INOTIFY 0 435# define EV_USE_INOTIFY 0
378#endif 436#endif
379 437
380#if !EV_USE_NANOSLEEP 438#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 439/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 440# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 441# include <sys/select.h>
442# endif
443#endif
444
445#if EV_USE_LINUXAIO
446# include <sys/syscall.h>
447# if !SYS_io_getevents
448# undef EV_USE_LINUXAIO
449# define EV_USE_LINUXAIO 0
384# endif 450# endif
385#endif 451#endif
386 452
387#if EV_USE_INOTIFY 453#if EV_USE_INOTIFY
388# include <sys/statfs.h> 454# include <sys/statfs.h>
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 456/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 457# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 458# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 459# define EV_USE_INOTIFY 0
394# endif 460# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 461#endif
400 462
401#if EV_USE_EVENTFD 463#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 464/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 465# include <stdint.h>
… …
443#else 505#else
444# define EV_FREQUENT_CHECK do { } while (0) 506# define EV_FREQUENT_CHECK do { } while (0)
445#endif 507#endif
446 508
447/* 509/*
448 * This is used to avoid floating point rounding problems. 510 * 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. 511 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 512 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 513#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
514/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 515
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 516#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) */ 517#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 518
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 519#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) 520#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 521
522/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
523/* ECB.H BEGIN */
524/*
525 * libecb - http://software.schmorp.de/pkg/libecb
526 *
527 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
528 * Copyright (©) 2011 Emanuele Giaquinta
529 * All rights reserved.
530 *
531 * Redistribution and use in source and binary forms, with or without modifica-
532 * tion, are permitted provided that the following conditions are met:
533 *
534 * 1. Redistributions of source code must retain the above copyright notice,
535 * this list of conditions and the following disclaimer.
536 *
537 * 2. Redistributions in binary form must reproduce the above copyright
538 * notice, this list of conditions and the following disclaimer in the
539 * documentation and/or other materials provided with the distribution.
540 *
541 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
542 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
543 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
544 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
545 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
546 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
547 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
548 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
549 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
550 * OF THE POSSIBILITY OF SUCH DAMAGE.
551 *
552 * Alternatively, the contents of this file may be used under the terms of
553 * the GNU General Public License ("GPL") version 2 or any later version,
554 * in which case the provisions of the GPL are applicable instead of
555 * the above. If you wish to allow the use of your version of this file
556 * only under the terms of the GPL and not to allow others to use your
557 * version of this file under the BSD license, indicate your decision
558 * by deleting the provisions above and replace them with the notice
559 * and other provisions required by the GPL. If you do not delete the
560 * provisions above, a recipient may use your version of this file under
561 * either the BSD or the GPL.
562 */
563
564#ifndef ECB_H
565#define ECB_H
566
567/* 16 bits major, 16 bits minor */
568#define ECB_VERSION 0x00010005
569
570#ifdef _WIN32
571 typedef signed char int8_t;
572 typedef unsigned char uint8_t;
573 typedef signed short int16_t;
574 typedef unsigned short uint16_t;
575 typedef signed int int32_t;
576 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 577 #if __GNUC__
578 typedef signed long long int64_t;
579 typedef unsigned long long uint64_t;
580 #else /* _MSC_VER || __BORLANDC__ */
581 typedef signed __int64 int64_t;
582 typedef unsigned __int64 uint64_t;
583 #endif
584 #ifdef _WIN64
585 #define ECB_PTRSIZE 8
586 typedef uint64_t uintptr_t;
587 typedef int64_t intptr_t;
588 #else
589 #define ECB_PTRSIZE 4
590 typedef uint32_t uintptr_t;
591 typedef int32_t intptr_t;
592 #endif
593#else
594 #include <inttypes.h>
595 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
596 #define ECB_PTRSIZE 8
597 #else
598 #define ECB_PTRSIZE 4
599 #endif
600#endif
601
602#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
603#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
604
605/* work around x32 idiocy by defining proper macros */
606#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
607 #if _ILP32
608 #define ECB_AMD64_X32 1
609 #else
610 #define ECB_AMD64 1
611 #endif
612#endif
613
614/* many compilers define _GNUC_ to some versions but then only implement
615 * what their idiot authors think are the "more important" extensions,
616 * causing enormous grief in return for some better fake benchmark numbers.
617 * or so.
618 * we try to detect these and simply assume they are not gcc - if they have
619 * an issue with that they should have done it right in the first place.
620 */
621#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
622 #define ECB_GCC_VERSION(major,minor) 0
623#else
624 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
625#endif
626
627#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
628
629#if __clang__ && defined __has_builtin
630 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
631#else
632 #define ECB_CLANG_BUILTIN(x) 0
633#endif
634
635#if __clang__ && defined __has_extension
636 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
637#else
638 #define ECB_CLANG_EXTENSION(x) 0
639#endif
640
641#define ECB_CPP (__cplusplus+0)
642#define ECB_CPP11 (__cplusplus >= 201103L)
643#define ECB_CPP14 (__cplusplus >= 201402L)
644#define ECB_CPP17 (__cplusplus >= 201703L)
645
646#if ECB_CPP
647 #define ECB_C 0
648 #define ECB_STDC_VERSION 0
649#else
650 #define ECB_C 1
651 #define ECB_STDC_VERSION __STDC_VERSION__
652#endif
653
654#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
655#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
656#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
657
658#if ECB_CPP
659 #define ECB_EXTERN_C extern "C"
660 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
661 #define ECB_EXTERN_C_END }
662#else
663 #define ECB_EXTERN_C extern
664 #define ECB_EXTERN_C_BEG
665 #define ECB_EXTERN_C_END
666#endif
667
668/*****************************************************************************/
669
670/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
671/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
672
673#if ECB_NO_THREADS
674 #define ECB_NO_SMP 1
675#endif
676
677#if ECB_NO_SMP
678 #define ECB_MEMORY_FENCE do { } while (0)
679#endif
680
681/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
682#if __xlC__ && ECB_CPP
683 #include <builtins.h>
684#endif
685
686#if 1400 <= _MSC_VER
687 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
688#endif
689
690#ifndef ECB_MEMORY_FENCE
691 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
692 #if __i386 || __i386__
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
696 #elif ECB_GCC_AMD64
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
698 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
699 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
700 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
701 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
702 #elif defined __ARM_ARCH_2__ \
703 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
704 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
705 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
706 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
707 || defined __ARM_ARCH_5TEJ__
708 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
709 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
710 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
711 || defined __ARM_ARCH_6T2__
712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
713 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
714 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
716 #elif __aarch64__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
718 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
720 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
721 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
722 #elif defined __s390__ || defined __s390x__
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
724 #elif defined __mips__
725 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
726 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
728 #elif defined __alpha__
729 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
730 #elif defined __hppa__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
733 #elif defined __ia64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
735 #elif defined __m68k__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #elif defined __m88k__
738 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
739 #elif defined __sh__
740 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
741 #endif
742 #endif
743#endif
744
745#ifndef ECB_MEMORY_FENCE
746 #if ECB_GCC_VERSION(4,7)
747 /* see comment below (stdatomic.h) about the C11 memory model. */
748 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
749 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
750 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
751
752 #elif ECB_CLANG_EXTENSION(c_atomic)
753 /* see comment below (stdatomic.h) about the C11 memory model. */
754 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
755 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
756 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
757
758 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
759 #define ECB_MEMORY_FENCE __sync_synchronize ()
760 #elif _MSC_VER >= 1500 /* VC++ 2008 */
761 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
762 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
763 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
764 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
765 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
766 #elif _MSC_VER >= 1400 /* VC++ 2005 */
767 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
768 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
769 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
770 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
771 #elif defined _WIN32
772 #include <WinNT.h>
773 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
774 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
775 #include <mbarrier.h>
776 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
777 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
778 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
790 /* any fence other than seq_cst, which isn't very efficient for us. */
791 /* Why that is, we don't know - either the C11 memory model is quite useless */
792 /* for most usages, or gcc and clang have a bug */
793 /* I *currently* lean towards the latter, and inefficiently implement */
794 /* all three of ecb's fences as a seq_cst fence */
795 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
796 /* for all __atomic_thread_fence's except seq_cst */
797 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
798 #endif
799#endif
800
801#ifndef ECB_MEMORY_FENCE
802 #if !ECB_AVOID_PTHREADS
803 /*
804 * if you get undefined symbol references to pthread_mutex_lock,
805 * or failure to find pthread.h, then you should implement
806 * the ECB_MEMORY_FENCE operations for your cpu/compiler
807 * OR provide pthread.h and link against the posix thread library
808 * of your system.
809 */
810 #include <pthread.h>
811 #define ECB_NEEDS_PTHREADS 1
812 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
813
814 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
815 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
816 #endif
817#endif
818
819#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
820 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
821#endif
822
823#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
824 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
825#endif
826
827/*****************************************************************************/
828
829#if ECB_CPP
830 #define ecb_inline static inline
831#elif ECB_GCC_VERSION(2,5)
832 #define ecb_inline static __inline__
833#elif ECB_C99
834 #define ecb_inline static inline
835#else
836 #define ecb_inline static
837#endif
838
839#if ECB_GCC_VERSION(3,3)
840 #define ecb_restrict __restrict__
841#elif ECB_C99
842 #define ecb_restrict restrict
843#else
844 #define ecb_restrict
845#endif
846
847typedef int ecb_bool;
848
849#define ECB_CONCAT_(a, b) a ## b
850#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
851#define ECB_STRINGIFY_(a) # a
852#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
853#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
854
855#define ecb_function_ ecb_inline
856
857#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
858 #define ecb_attribute(attrlist) __attribute__ (attrlist)
859#else
860 #define ecb_attribute(attrlist)
861#endif
862
863#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
864 #define ecb_is_constant(expr) __builtin_constant_p (expr)
865#else
866 /* possible C11 impl for integral types
867 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
868 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
869
870 #define ecb_is_constant(expr) 0
871#endif
872
873#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 874 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 875#else
467# define expect(expr,value) (expr) 876 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 877#endif
472#endif
473 878
879#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
880 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
881#else
882 #define ecb_prefetch(addr,rw,locality)
883#endif
884
885/* no emulation for ecb_decltype */
886#if ECB_CPP11
887 // older implementations might have problems with decltype(x)::type, work around it
888 template<class T> struct ecb_decltype_t { typedef T type; };
889 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
890#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
891 #define ecb_decltype(x) __typeof__ (x)
892#endif
893
894#if _MSC_VER >= 1300
895 #define ecb_deprecated __declspec (deprecated)
896#else
897 #define ecb_deprecated ecb_attribute ((__deprecated__))
898#endif
899
900#if _MSC_VER >= 1500
901 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
902#elif ECB_GCC_VERSION(4,5)
903 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
904#else
905 #define ecb_deprecated_message(msg) ecb_deprecated
906#endif
907
908#if _MSC_VER >= 1400
909 #define ecb_noinline __declspec (noinline)
910#else
911 #define ecb_noinline ecb_attribute ((__noinline__))
912#endif
913
914#define ecb_unused ecb_attribute ((__unused__))
915#define ecb_const ecb_attribute ((__const__))
916#define ecb_pure ecb_attribute ((__pure__))
917
918#if ECB_C11 || __IBMC_NORETURN
919 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
920 #define ecb_noreturn _Noreturn
921#elif ECB_CPP11
922 #define ecb_noreturn [[noreturn]]
923#elif _MSC_VER >= 1200
924 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
925 #define ecb_noreturn __declspec (noreturn)
926#else
927 #define ecb_noreturn ecb_attribute ((__noreturn__))
928#endif
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_artificial ecb_attribute ((__artificial__))
932 #define ecb_hot ecb_attribute ((__hot__))
933 #define ecb_cold ecb_attribute ((__cold__))
934#else
935 #define ecb_artificial
936 #define ecb_hot
937 #define ecb_cold
938#endif
939
940/* put around conditional expressions if you are very sure that the */
941/* expression is mostly true or mostly false. note that these return */
942/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 943#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 944#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
945/* for compatibility to the rest of the world */
946#define ecb_likely(expr) ecb_expect_true (expr)
947#define ecb_unlikely(expr) ecb_expect_false (expr)
948
949/* count trailing zero bits and count # of one bits */
950#if ECB_GCC_VERSION(3,4) \
951 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
952 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
953 && ECB_CLANG_BUILTIN(__builtin_popcount))
954 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
955 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
956 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
957 #define ecb_ctz32(x) __builtin_ctz (x)
958 #define ecb_ctz64(x) __builtin_ctzll (x)
959 #define ecb_popcount32(x) __builtin_popcount (x)
960 /* no popcountll */
961#else
962 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
963 ecb_function_ ecb_const int
964 ecb_ctz32 (uint32_t x)
965 {
966#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
967 unsigned long r;
968 _BitScanForward (&r, x);
969 return (int)r;
970#else
971 int r = 0;
972
973 x &= ~x + 1; /* this isolates the lowest bit */
974
975#if ECB_branchless_on_i386
976 r += !!(x & 0xaaaaaaaa) << 0;
977 r += !!(x & 0xcccccccc) << 1;
978 r += !!(x & 0xf0f0f0f0) << 2;
979 r += !!(x & 0xff00ff00) << 3;
980 r += !!(x & 0xffff0000) << 4;
981#else
982 if (x & 0xaaaaaaaa) r += 1;
983 if (x & 0xcccccccc) r += 2;
984 if (x & 0xf0f0f0f0) r += 4;
985 if (x & 0xff00ff00) r += 8;
986 if (x & 0xffff0000) r += 16;
987#endif
988
989 return r;
990#endif
991 }
992
993 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
994 ecb_function_ ecb_const int
995 ecb_ctz64 (uint64_t x)
996 {
997#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
998 unsigned long r;
999 _BitScanForward64 (&r, x);
1000 return (int)r;
1001#else
1002 int shift = x & 0xffffffff ? 0 : 32;
1003 return ecb_ctz32 (x >> shift) + shift;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1008 ecb_function_ ecb_const int
1009 ecb_popcount32 (uint32_t x)
1010 {
1011 x -= (x >> 1) & 0x55555555;
1012 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1013 x = ((x >> 4) + x) & 0x0f0f0f0f;
1014 x *= 0x01010101;
1015
1016 return x >> 24;
1017 }
1018
1019 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1020 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanReverse (&r, x);
1025 return (int)r;
1026#else
1027 int r = 0;
1028
1029 if (x >> 16) { x >>= 16; r += 16; }
1030 if (x >> 8) { x >>= 8; r += 8; }
1031 if (x >> 4) { x >>= 4; r += 4; }
1032 if (x >> 2) { x >>= 2; r += 2; }
1033 if (x >> 1) { r += 1; }
1034
1035 return r;
1036#endif
1037 }
1038
1039 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1040 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1041 {
1042#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1043 unsigned long r;
1044 _BitScanReverse64 (&r, x);
1045 return (int)r;
1046#else
1047 int r = 0;
1048
1049 if (x >> 32) { x >>= 32; r += 32; }
1050
1051 return r + ecb_ld32 (x);
1052#endif
1053 }
1054#endif
1055
1056ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1058ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1059ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1060
1061ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1062ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1063{
1064 return ( (x * 0x0802U & 0x22110U)
1065 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1066}
1067
1068ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1069ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1070{
1071 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1072 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1073 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1074 x = ( x >> 8 ) | ( x << 8);
1075
1076 return x;
1077}
1078
1079ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1080ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1081{
1082 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1083 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1084 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1085 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1086 x = ( x >> 16 ) | ( x << 16);
1087
1088 return x;
1089}
1090
1091/* popcount64 is only available on 64 bit cpus as gcc builtin */
1092/* so for this version we are lazy */
1093ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1094ecb_function_ ecb_const int
1095ecb_popcount64 (uint64_t x)
1096{
1097 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1098}
1099
1100ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1101ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1102ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1103ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1104ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1105ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1106ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1107ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1108
1109ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1110ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1111ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1112ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1113ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1114ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1115ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1116ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1117
1118#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1119 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1120 #define ecb_bswap16(x) __builtin_bswap16 (x)
1121 #else
1122 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1123 #endif
1124 #define ecb_bswap32(x) __builtin_bswap32 (x)
1125 #define ecb_bswap64(x) __builtin_bswap64 (x)
1126#elif _MSC_VER
1127 #include <stdlib.h>
1128 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1129 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1130 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1131#else
1132 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1133 ecb_function_ ecb_const uint16_t
1134 ecb_bswap16 (uint16_t x)
1135 {
1136 return ecb_rotl16 (x, 8);
1137 }
1138
1139 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1140 ecb_function_ ecb_const uint32_t
1141 ecb_bswap32 (uint32_t x)
1142 {
1143 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1144 }
1145
1146 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1147 ecb_function_ ecb_const uint64_t
1148 ecb_bswap64 (uint64_t x)
1149 {
1150 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1151 }
1152#endif
1153
1154#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1155 #define ecb_unreachable() __builtin_unreachable ()
1156#else
1157 /* this seems to work fine, but gcc always emits a warning for it :/ */
1158 ecb_inline ecb_noreturn void ecb_unreachable (void);
1159 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1160#endif
1161
1162/* try to tell the compiler that some condition is definitely true */
1163#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1164
1165ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1166ecb_inline ecb_const uint32_t
1167ecb_byteorder_helper (void)
1168{
1169 /* the union code still generates code under pressure in gcc, */
1170 /* but less than using pointers, and always seems to */
1171 /* successfully return a constant. */
1172 /* the reason why we have this horrible preprocessor mess */
1173 /* is to avoid it in all cases, at least on common architectures */
1174 /* or when using a recent enough gcc version (>= 4.6) */
1175#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1176 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1177 #define ECB_LITTLE_ENDIAN 1
1178 return 0x44332211;
1179#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1180 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1181 #define ECB_BIG_ENDIAN 1
1182 return 0x11223344;
1183#else
1184 union
1185 {
1186 uint8_t c[4];
1187 uint32_t u;
1188 } u = { 0x11, 0x22, 0x33, 0x44 };
1189 return u.u;
1190#endif
1191}
1192
1193ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1194ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1195ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1196ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1197
1198#if ECB_GCC_VERSION(3,0) || ECB_C99
1199 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1200#else
1201 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1202#endif
1203
1204#if ECB_CPP
1205 template<typename T>
1206 static inline T ecb_div_rd (T val, T div)
1207 {
1208 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1209 }
1210 template<typename T>
1211 static inline T ecb_div_ru (T val, T div)
1212 {
1213 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1214 }
1215#else
1216 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1217 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1218#endif
1219
1220#if ecb_cplusplus_does_not_suck
1221 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1222 template<typename T, int N>
1223 static inline int ecb_array_length (const T (&arr)[N])
1224 {
1225 return N;
1226 }
1227#else
1228 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1229#endif
1230
1231ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1232ecb_function_ ecb_const uint32_t
1233ecb_binary16_to_binary32 (uint32_t x)
1234{
1235 unsigned int s = (x & 0x8000) << (31 - 15);
1236 int e = (x >> 10) & 0x001f;
1237 unsigned int m = x & 0x03ff;
1238
1239 if (ecb_expect_false (e == 31))
1240 /* infinity or NaN */
1241 e = 255 - (127 - 15);
1242 else if (ecb_expect_false (!e))
1243 {
1244 if (ecb_expect_true (!m))
1245 /* zero, handled by code below by forcing e to 0 */
1246 e = 0 - (127 - 15);
1247 else
1248 {
1249 /* subnormal, renormalise */
1250 unsigned int s = 10 - ecb_ld32 (m);
1251
1252 m = (m << s) & 0x3ff; /* mask implicit bit */
1253 e -= s - 1;
1254 }
1255 }
1256
1257 /* e and m now are normalised, or zero, (or inf or nan) */
1258 e += 127 - 15;
1259
1260 return s | (e << 23) | (m << (23 - 10));
1261}
1262
1263ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1264ecb_function_ ecb_const uint16_t
1265ecb_binary32_to_binary16 (uint32_t x)
1266{
1267 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1268 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1269 unsigned int m = x & 0x007fffff;
1270
1271 x &= 0x7fffffff;
1272
1273 /* if it's within range of binary16 normals, use fast path */
1274 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1275 {
1276 /* mantissa round-to-even */
1277 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1278
1279 /* handle overflow */
1280 if (ecb_expect_false (m >= 0x00800000))
1281 {
1282 m >>= 1;
1283 e += 1;
1284 }
1285
1286 return s | (e << 10) | (m >> (23 - 10));
1287 }
1288
1289 /* handle large numbers and infinity */
1290 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1291 return s | 0x7c00;
1292
1293 /* handle zero, subnormals and small numbers */
1294 if (ecb_expect_true (x < 0x38800000))
1295 {
1296 /* zero */
1297 if (ecb_expect_true (!x))
1298 return s;
1299
1300 /* handle subnormals */
1301
1302 /* too small, will be zero */
1303 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1304 return s;
1305
1306 m |= 0x00800000; /* make implicit bit explicit */
1307
1308 /* very tricky - we need to round to the nearest e (+10) bit value */
1309 {
1310 unsigned int bits = 14 - e;
1311 unsigned int half = (1 << (bits - 1)) - 1;
1312 unsigned int even = (m >> bits) & 1;
1313
1314 /* if this overflows, we will end up with a normalised number */
1315 m = (m + half + even) >> bits;
1316 }
1317
1318 return s | m;
1319 }
1320
1321 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1322 m >>= 13;
1323
1324 return s | 0x7c00 | m | !m;
1325}
1326
1327/*******************************************************************************/
1328/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1329
1330/* basically, everything uses "ieee pure-endian" floating point numbers */
1331/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1332#if 0 \
1333 || __i386 || __i386__ \
1334 || ECB_GCC_AMD64 \
1335 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1336 || defined __s390__ || defined __s390x__ \
1337 || defined __mips__ \
1338 || defined __alpha__ \
1339 || defined __hppa__ \
1340 || defined __ia64__ \
1341 || defined __m68k__ \
1342 || defined __m88k__ \
1343 || defined __sh__ \
1344 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1345 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1346 || defined __aarch64__
1347 #define ECB_STDFP 1
1348 #include <string.h> /* for memcpy */
1349#else
1350 #define ECB_STDFP 0
1351#endif
1352
1353#ifndef ECB_NO_LIBM
1354
1355 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1356
1357 /* only the oldest of old doesn't have this one. solaris. */
1358 #ifdef INFINITY
1359 #define ECB_INFINITY INFINITY
1360 #else
1361 #define ECB_INFINITY HUGE_VAL
1362 #endif
1363
1364 #ifdef NAN
1365 #define ECB_NAN NAN
1366 #else
1367 #define ECB_NAN ECB_INFINITY
1368 #endif
1369
1370 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1371 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1372 #define ecb_frexpf(x,e) frexpf ((x), (e))
1373 #else
1374 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1375 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1376 #endif
1377
1378 /* convert a float to ieee single/binary32 */
1379 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1380 ecb_function_ ecb_const uint32_t
1381 ecb_float_to_binary32 (float x)
1382 {
1383 uint32_t r;
1384
1385 #if ECB_STDFP
1386 memcpy (&r, &x, 4);
1387 #else
1388 /* slow emulation, works for anything but -0 */
1389 uint32_t m;
1390 int e;
1391
1392 if (x == 0e0f ) return 0x00000000U;
1393 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1394 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1395 if (x != x ) return 0x7fbfffffU;
1396
1397 m = ecb_frexpf (x, &e) * 0x1000000U;
1398
1399 r = m & 0x80000000U;
1400
1401 if (r)
1402 m = -m;
1403
1404 if (e <= -126)
1405 {
1406 m &= 0xffffffU;
1407 m >>= (-125 - e);
1408 e = -126;
1409 }
1410
1411 r |= (e + 126) << 23;
1412 r |= m & 0x7fffffU;
1413 #endif
1414
1415 return r;
1416 }
1417
1418 /* converts an ieee single/binary32 to a float */
1419 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1420 ecb_function_ ecb_const float
1421 ecb_binary32_to_float (uint32_t x)
1422 {
1423 float r;
1424
1425 #if ECB_STDFP
1426 memcpy (&r, &x, 4);
1427 #else
1428 /* emulation, only works for normals and subnormals and +0 */
1429 int neg = x >> 31;
1430 int e = (x >> 23) & 0xffU;
1431
1432 x &= 0x7fffffU;
1433
1434 if (e)
1435 x |= 0x800000U;
1436 else
1437 e = 1;
1438
1439 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1440 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1441
1442 r = neg ? -r : r;
1443 #endif
1444
1445 return r;
1446 }
1447
1448 /* convert a double to ieee double/binary64 */
1449 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1450 ecb_function_ ecb_const uint64_t
1451 ecb_double_to_binary64 (double x)
1452 {
1453 uint64_t r;
1454
1455 #if ECB_STDFP
1456 memcpy (&r, &x, 8);
1457 #else
1458 /* slow emulation, works for anything but -0 */
1459 uint64_t m;
1460 int e;
1461
1462 if (x == 0e0 ) return 0x0000000000000000U;
1463 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1464 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1465 if (x != x ) return 0X7ff7ffffffffffffU;
1466
1467 m = frexp (x, &e) * 0x20000000000000U;
1468
1469 r = m & 0x8000000000000000;;
1470
1471 if (r)
1472 m = -m;
1473
1474 if (e <= -1022)
1475 {
1476 m &= 0x1fffffffffffffU;
1477 m >>= (-1021 - e);
1478 e = -1022;
1479 }
1480
1481 r |= ((uint64_t)(e + 1022)) << 52;
1482 r |= m & 0xfffffffffffffU;
1483 #endif
1484
1485 return r;
1486 }
1487
1488 /* converts an ieee double/binary64 to a double */
1489 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1490 ecb_function_ ecb_const double
1491 ecb_binary64_to_double (uint64_t x)
1492 {
1493 double r;
1494
1495 #if ECB_STDFP
1496 memcpy (&r, &x, 8);
1497 #else
1498 /* emulation, only works for normals and subnormals and +0 */
1499 int neg = x >> 63;
1500 int e = (x >> 52) & 0x7ffU;
1501
1502 x &= 0xfffffffffffffU;
1503
1504 if (e)
1505 x |= 0x10000000000000U;
1506 else
1507 e = 1;
1508
1509 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1510 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1511
1512 r = neg ? -r : r;
1513 #endif
1514
1515 return r;
1516 }
1517
1518 /* convert a float to ieee half/binary16 */
1519 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1520 ecb_function_ ecb_const uint16_t
1521 ecb_float_to_binary16 (float x)
1522 {
1523 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1524 }
1525
1526 /* convert an ieee half/binary16 to float */
1527 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1528 ecb_function_ ecb_const float
1529 ecb_binary16_to_float (uint16_t x)
1530 {
1531 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1532 }
1533
1534#endif
1535
1536#endif
1537
1538/* ECB.H END */
1539
1540#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1541/* if your architecture doesn't need memory fences, e.g. because it is
1542 * single-cpu/core, or if you use libev in a project that doesn't use libev
1543 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1544 * libev, in which cases the memory fences become nops.
1545 * alternatively, you can remove this #error and link against libpthread,
1546 * which will then provide the memory fences.
1547 */
1548# error "memory fences not defined for your architecture, please report"
1549#endif
1550
1551#ifndef ECB_MEMORY_FENCE
1552# define ECB_MEMORY_FENCE do { } while (0)
1553# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1554# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1555#endif
1556
1557#define expect_false(cond) ecb_expect_false (cond)
1558#define expect_true(cond) ecb_expect_true (cond)
1559#define noinline ecb_noinline
1560
476#define inline_size static inline 1561#define inline_size ecb_inline
477 1562
478#if EV_FEATURE_CODE 1563#if EV_FEATURE_CODE
479# define inline_speed static inline 1564# define inline_speed ecb_inline
480#else 1565#else
481# define inline_speed static noinline 1566# define inline_speed noinline static
482#endif 1567#endif
483 1568
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1569#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1570
486#if EV_MINPRI == EV_MAXPRI 1571#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0) 1572# define ABSPRI(w) (((W)w), 0)
488#else 1573#else
489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1574# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif 1575#endif
491 1576
492#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1577#define EMPTY /* required for microsofts broken pseudo-c compiler */
493#define EMPTY2(a,b) /* used to suppress some warnings */
494 1578
495typedef ev_watcher *W; 1579typedef ev_watcher *W;
496typedef ev_watcher_list *WL; 1580typedef ev_watcher_list *WL;
497typedef ev_watcher_time *WT; 1581typedef ev_watcher_time *WT;
498 1582
… …
523# include "ev_win32.c" 1607# include "ev_win32.c"
524#endif 1608#endif
525 1609
526/*****************************************************************************/ 1610/*****************************************************************************/
527 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
… …
980 for (i = 0; i < fdchangecnt; ++i) 2117 for (i = 0; i < fdchangecnt; ++i)
981 { 2118 {
982 int fd = fdchanges [i]; 2119 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 2120 ANFD *anfd = anfds + fd;
984 2121
985 if (anfd->reify & EV__IOFDSET) 2122 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 2123 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 2124 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 2125
989 if (handle != anfd->handle) 2126 if (handle != anfd->handle)
990 { 2127 {
… …
1029 2166
1030 fdchangecnt = 0; 2167 fdchangecnt = 0;
1031} 2168}
1032 2169
1033/* something about the given fd changed */ 2170/* something about the given fd changed */
1034inline_size void 2171inline_size
2172void
1035fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1036{ 2174{
1037 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1038 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1039 2177
1040 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1041 { 2179 {
1042 ++fdchangecnt; 2180 ++fdchangecnt;
1043 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1044 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1045 } 2183 }
1046} 2184}
1047 2185
1048/* 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 */
1049inline_speed void 2187inline_speed ecb_cold void
1050fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1051{ 2189{
1052 ev_io *w; 2190 ev_io *w;
1053 2191
1054 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1057 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);
1058 } 2196 }
1059} 2197}
1060 2198
1061/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 2200inline_size ecb_cold int
1063fd_valid (int fd) 2201fd_valid (int fd)
1064{ 2202{
1065#ifdef _WIN32 2203#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 2205#else
1068 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1069#endif 2207#endif
1070} 2208}
1071 2209
1072/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1073static void noinline 2211noinline ecb_cold
2212static void
1074fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1075{ 2214{
1076 int fd; 2215 int fd;
1077 2216
1078 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1082} 2221}
1083 2222
1084/* 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 */
1085static void noinline 2224noinline ecb_cold
2225static void
1086fd_enomem (EV_P) 2226fd_enomem (EV_P)
1087{ 2227{
1088 int fd; 2228 int fd;
1089 2229
1090 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1094 break; 2234 break;
1095 } 2235 }
1096} 2236}
1097 2237
1098/* 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 */
1099static void noinline 2239noinline
2240static void
1100fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1101{ 2242{
1102 int fd; 2243 int fd;
1103 2244
1104 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1285 2426
1286/*****************************************************************************/ 2427/*****************************************************************************/
1287 2428
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 2430
1290static void noinline 2431noinline ecb_cold
2432static void
1291evpipe_init (EV_P) 2433evpipe_init (EV_P)
1292{ 2434{
1293 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1294 { 2436 {
2437 int fds [2];
2438
1295# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1299 2444
1300 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1301 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1302 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1303 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1304 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));
1305 } 2506 }
1306 else 2507 else
1307# endif 2508#endif
1308 { 2509 {
1309 while (pipe (evpipe)) 2510#ifdef _WIN32
1310 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1311 2512 DWORD sent;
1312 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1313 fd_intern (evpipe [1]); 2514 buf.len = 1;
1314 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
1315 } 2519 }
1316
1317 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 }
1320}
1321
1322inline_size void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{
1325 if (!*flag)
1326 {
1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331
1332#if EV_USE_EVENTFD
1333 if (evfd >= 0)
1334 {
1335 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t));
1337 }
1338 else
1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1345 write (evpipe [1], &dummy, 1);
1346 2520
1347 errno = old_errno; 2521 errno = old_errno;
1348 } 2522 }
1349} 2523}
1350 2524
… …
1353static void 2527static void
1354pipecb (EV_P_ ev_io *iow, int revents) 2528pipecb (EV_P_ ev_io *iow, int revents)
1355{ 2529{
1356 int i; 2530 int i;
1357 2531
2532 if (revents & EV_READ)
2533 {
1358#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1359 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1360 { 2536 {
1361 uint64_t counter; 2537 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1363 } 2539 }
1364 else 2540 else
1365#endif 2541#endif
1366 { 2542 {
1367 char dummy; 2543 char dummy[4];
1368 /* 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
1369 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
2554 }
1370 } 2555 }
2556
2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 2560
1372#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 2562 if (sig_pending)
1374 { 2563 {
1375 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1376 2567
1377 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1380 } 2571 }
… …
1382 2573
1383#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1384 if (async_pending) 2575 if (async_pending)
1385 { 2576 {
1386 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1387 2580
1388 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1390 { 2583 {
1391 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 } 2587 }
1394 } 2588 }
1395#endif 2589#endif
1396} 2590}
1397 2591
1398/*****************************************************************************/ 2592/*****************************************************************************/
1399 2593
1400void 2594void
1401ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1402{ 2596{
1403#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1404 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1405 2601
1406 if (!EV_A) 2602 if (!EV_A)
1407 return; 2603 return;
1408#endif 2604#endif
1409 2605
… …
1419#endif 2615#endif
1420 2616
1421 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1422} 2618}
1423 2619
1424void noinline 2620noinline
2621void
1425ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1426{ 2623{
1427 WL w; 2624 WL w;
1428 2625
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1430 return; 2627 return;
1431 2628
1432 --signum; 2629 --signum;
1433 2630
1434#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1438 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1439 return; 2636 return;
1440#endif 2637#endif
1441 2638
1442 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1443 2641
1444 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446} 2644}
1447 2645
… …
1535# include "ev_port.c" 2733# include "ev_port.c"
1536#endif 2734#endif
1537#if EV_USE_KQUEUE 2735#if EV_USE_KQUEUE
1538# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1539#endif 2737#endif
2738#if EV_USE_LINUXAIO
2739# include "ev_linuxaio.c"
2740#endif
1540#if EV_USE_EPOLL 2741#if EV_USE_EPOLL
1541# include "ev_epoll.c" 2742# include "ev_epoll.c"
1542#endif 2743#endif
1543#if EV_USE_POLL 2744#if EV_USE_POLL
1544# include "ev_poll.c" 2745# include "ev_poll.c"
1545#endif 2746#endif
1546#if EV_USE_SELECT 2747#if EV_USE_SELECT
1547# include "ev_select.c" 2748# include "ev_select.c"
1548#endif 2749#endif
1549 2750
1550int 2751ecb_cold int
1551ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
1552{ 2753{
1553 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
1554} 2755}
1555 2756
1556int 2757ecb_cold int
1557ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
1558{ 2759{
1559 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
1560} 2761}
1561 2762
1562/* 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 */
1563int inline_size 2764inline_size ecb_cold int
1564enable_secure (void) 2765enable_secure (void)
1565{ 2766{
1566#ifdef _WIN32 2767#ifdef _WIN32
1567 return 0; 2768 return 0;
1568#else 2769#else
1569 return getuid () != geteuid () 2770 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2771 || getgid () != getegid ();
1571#endif 2772#endif
1572} 2773}
1573 2774
2775ecb_cold
1574unsigned int 2776unsigned int
1575ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
1576{ 2778{
1577 unsigned int flags = 0; 2779 unsigned int flags = 0;
1578 2780
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1581 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
1582 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1584 2787
1585 return flags; 2788 return flags;
1586} 2789}
1587 2790
2791ecb_cold
1588unsigned int 2792unsigned int
1589ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
1590{ 2794{
1591 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
1592 2796
1593#ifndef __NetBSD__ 2797#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
1602#endif 2806#endif
1603#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
1604 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) */
1605#endif 2809#endif
1606 2810
2811 /* TODO: linuxaio is very experimental */
2812 flags &= ~EVBACKEND_LINUXAIO;
2813
1607 return flags; 2814 return flags;
1608} 2815}
1609 2816
2817ecb_cold
1610unsigned int 2818unsigned int
1611ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
1612{ 2820{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2822
1615 /* 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 */
1616 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 */
… …
1618 2826
1619 return flags; 2827 return flags;
1620} 2828}
1621 2829
1622unsigned int 2830unsigned int
1623ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
1624{ 2832{
1625 return backend; 2833 return backend;
1626} 2834}
1627 2835
1628#if EV_FEATURE_API 2836#if EV_FEATURE_API
1629unsigned int 2837unsigned int
1630ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
1631{ 2839{
1632 return loop_count; 2840 return loop_count;
1633} 2841}
1634 2842
1635unsigned int 2843unsigned int
1636ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
1637{ 2845{
1638 return loop_depth; 2846 return loop_depth;
1639} 2847}
1640 2848
1641void 2849void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1643{ 2851{
1644 io_blocktime = interval; 2852 io_blocktime = interval;
1645} 2853}
1646 2854
1647void 2855void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1649{ 2857{
1650 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
1651} 2859}
1652 2860
1653void 2861void
1654ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1655{ 2863{
1656 userdata = data; 2864 userdata = data;
1657} 2865}
1658 2866
1659void * 2867void *
1660ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
1661{ 2869{
1662 return userdata; 2870 return userdata;
1663} 2871}
1664 2872
2873void
1665void 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
1666{ 2875{
1667 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
1668} 2877}
1669 2878
2879void
1670void 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
1671{ 2881{
1672 release_cb = release; 2882 release_cb = release;
1673 acquire_cb = acquire; 2883 acquire_cb = acquire;
1674} 2884}
1675#endif 2885#endif
1676 2886
1677/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2888noinline ecb_cold
2889static void
1679loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1680{ 2891{
1681 if (!backend) 2892 if (!backend)
1682 { 2893 {
1683 origflags = flags; 2894 origflags = flags;
1684 2895
… …
1711 if (!(flags & EVFLAG_NOENV) 2922 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2923 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2924 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2925 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2926
1716 ev_rt_now = ev_time (); 2927 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2928 mn_now = get_clock ();
1718 now_floor = mn_now; 2929 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2930 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2931#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2932 invoke_cb = ev_invoke_pending;
1722#endif 2933#endif
1723 2934
1724 io_blocktime = 0.; 2935 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2936 timeout_blocktime = 0.;
1726 backend = 0; 2937 backend = 0;
1727 backend_fd = -1; 2938 backend_fd = -1;
1728 sig_pending = 0; 2939 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2941 async_pending = 0;
1731#endif 2942#endif
2943 pipe_write_skipped = 0;
2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
1732#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2949#endif
1735#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2952#endif
1738 2953
1739 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
1741 2956
1742#if EV_USE_IOCP 2957#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif 2959#endif
1745#if EV_USE_PORT 2960#if EV_USE_PORT
1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1747#endif 2962#endif
1748#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
1749 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);
1750#endif 2968#endif
1751#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
1752 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1753#endif 2971#endif
1754#if EV_USE_POLL 2972#if EV_USE_POLL
1755 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1756#endif 2974#endif
1757#if EV_USE_SELECT 2975#if EV_USE_SELECT
1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1759#endif 2977#endif
1760 2978
1761 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
1762 2980
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1766#endif 2984#endif
1767 } 2985 }
1768} 2986}
1769 2987
1770/* free up a loop structure */ 2988/* free up a loop structure */
2989ecb_cold
1771void 2990void
1772ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
1773{ 2992{
1774 int i; 2993 int i;
1775 2994
… …
1787 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
1788 } 3007 }
1789#endif 3008#endif
1790 3009
1791#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 3012 {
1794 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
1796 } 3015 }
1797#endif 3016#endif
… …
1799 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
1800 { 3019 {
1801 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
1803 3022
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 } 3025 }
1815 3026
1816#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
1818 close (sigfd); 3029 close (sigfd);
… …
1825 3036
1826 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
1827 close (backend_fd); 3038 close (backend_fd);
1828 3039
1829#if EV_USE_IOCP 3040#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif 3042#endif
1832#if EV_USE_PORT 3043#if EV_USE_PORT
1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1834#endif 3045#endif
1835#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
1836 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);
1837#endif 3051#endif
1838#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
1839 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1840#endif 3054#endif
1841#if EV_USE_POLL 3055#if EV_USE_POLL
1842 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1843#endif 3057#endif
1844#if EV_USE_SELECT 3058#if EV_USE_SELECT
1845 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1846#endif 3060#endif
1847 3061
1848 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
1849 { 3063 {
1850 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
1892 3106
1893inline_size void 3107inline_size void
1894loop_fork (EV_P) 3108loop_fork (EV_P)
1895{ 3109{
1896#if EV_USE_PORT 3110#if EV_USE_PORT
1897 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1898#endif 3112#endif
1899#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
1900 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);
1901#endif 3118#endif
1902#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
1903 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1904#endif 3121#endif
1905#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
1906 infy_fork (EV_A); 3123 infy_fork (EV_A);
1907#endif 3124#endif
1908 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1909 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
1910 { 3128 {
1911 /* this "locks" the handlers against writing to the pipe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 3130
1918 ev_ref (EV_A); 3131 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
1920 3133
1921#if EV_USE_EVENTFD
1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1925
1926 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931 3136
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1933 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
1935 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1936#endif
1937 } 3140 }
3141#endif
1938 3142
1939 postfork = 0; 3143 postfork = 0;
1940} 3144}
1941 3145
1942#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
1943 3147
3148ecb_cold
1944struct ev_loop * 3149struct ev_loop *
1945ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
1946{ 3151{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 3153
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
1957} 3162}
1958 3163
1959#endif /* multiplicity */ 3164#endif /* multiplicity */
1960 3165
1961#if EV_VERIFY 3166#if EV_VERIFY
1962static void noinline 3167noinline ecb_cold
3168static void
1963verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
1964{ 3170{
1965 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));
1966 3172
1967 if (w->pending) 3173 if (w->pending)
1968 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));
1969} 3175}
1970 3176
1971static void noinline 3177noinline ecb_cold
3178static void
1972verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
1973{ 3180{
1974 int i; 3181 int i;
1975 3182
1976 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 3188
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 3190 }
1984} 3191}
1985 3192
1986static void noinline 3193noinline ecb_cold
3194static void
1987array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
1988{ 3196{
1989 while (cnt--) 3197 while (cnt--)
1990 { 3198 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 3201 }
1994} 3202}
1995#endif 3203#endif
1996 3204
1997#if EV_FEATURE_API 3205#if EV_FEATURE_API
1998void 3206void ecb_cold
1999ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2000{ 3208{
2001#if EV_VERIFY 3209#if EV_VERIFY
2002 int i; 3210 int i;
2003 WL w; 3211 WL w, w2;
2004 3212
2005 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2006 3214
2007 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 3218
2011 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2013 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 3225 {
2015 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
2016 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));
2017 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));
2018 } 3236 }
3237 }
2019 3238
2020 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2022 3241
2023#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2069#endif 3288#endif
2070} 3289}
2071#endif 3290#endif
2072 3291
2073#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2074struct ev_loop * 3294struct ev_loop *
2075#else 3295#else
2076int 3296int
2077#endif 3297#endif
2078ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2079{ 3299{
2080 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2081 { 3301 {
2082#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 3322
2103 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2104} 3324}
2105 3325
2106void 3326void
2107ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2108{ 3328{
2109 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2110} 3330}
2111 3331
2112/*****************************************************************************/ 3332/*****************************************************************************/
2113 3333
2114void 3334void
… …
2116{ 3336{
2117 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2118} 3338}
2119 3339
2120unsigned int 3340unsigned int
2121ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2122{ 3342{
2123 int pri; 3343 int pri;
2124 unsigned int count = 0; 3344 unsigned int count = 0;
2125 3345
2126 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2128 3348
2129 return count; 3349 return count;
2130} 3350}
2131 3351
2132void noinline 3352noinline
3353void
2133ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2134{ 3355{
2135 int pri; 3356 pendingpri = NUMPRI;
2136 3357
2137 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2138 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2139 { 3364 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 3366
2142 p->w->pending = 0; 3367 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2145 } 3370 }
3371 }
3372 while (pendingpri);
2146} 3373}
2147 3374
2148#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2149/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
2208 } 3435 }
2209} 3436}
2210 3437
2211#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2212 3439
2213inline_speed void 3440noinline
3441static void
2214periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2215{ 3443{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 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;
2219} 3463}
2220 3464
2221/* make periodics pending */ 3465/* make periodics pending */
2222inline_size void 3466inline_size void
2223periodics_reify (EV_P) 3467periodics_reify (EV_P)
2224{ 3468{
2225 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2226 3470
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 { 3472 {
2229 int feed_count = 0;
2230
2231 do 3473 do
2232 { 3474 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234 3476
2235 /*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)));*/
… …
2245 downheap (periodics, periodiccnt, HEAP0); 3487 downheap (periodics, periodiccnt, HEAP0);
2246 } 3488 }
2247 else if (w->interval) 3489 else if (w->interval)
2248 { 3490 {
2249 periodic_recalc (EV_A_ w); 3491 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 3492 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 3493 downheap (periodics, periodiccnt, HEAP0);
2266 } 3494 }
2267 else 3495 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3496 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 3504 }
2277} 3505}
2278 3506
2279/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2280/* 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? */
2281static void noinline 3509noinline ecb_cold
3510static void
2282periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2283{ 3512{
2284 int i; 3513 int i;
2285 3514
2286 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2300} 3529}
2301#endif 3530#endif
2302 3531
2303/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2304static void noinline 3533noinline ecb_cold
3534static void
2305timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 3536{
2307 int i; 3537 int i;
2308 3538
2309 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2346 * 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
2347 * in the unlikely event of having been preempted here. 3577 * in the unlikely event of having been preempted here.
2348 */ 3578 */
2349 for (i = 4; --i; ) 3579 for (i = 4; --i; )
2350 { 3580 {
3581 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2352 3583
3584 diff = odiff - rtmn_diff;
3585
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3586 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 3587 return; /* all is well */
2355 3588
2356 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 3590 mn_now = get_clock ();
2358 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2380 3613
2381 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2382 } 3615 }
2383} 3616}
2384 3617
2385void 3618int
2386ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2387{ 3620{
2388#if EV_FEATURE_API 3621#if EV_FEATURE_API
2389 ++loop_depth; 3622 ++loop_depth;
2390#endif 3623#endif
… …
2448 ev_tstamp prev_mn_now = mn_now; 3681 ev_tstamp prev_mn_now = mn_now;
2449 3682
2450 /* update time to cancel out callback processing overhead */ 3683 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3684 time_update (EV_A_ 1e100);
2452 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
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3691 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3692 {
2455 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2456 3694
2457 if (timercnt) 3695 if (timercnt)
2458 { 3696 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3697 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3698 if (waittime > to) waittime = to;
2461 } 3699 }
2462 3700
2463#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3702 if (periodiccnt)
2465 { 3703 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3704 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2468 } 3706 }
2469#endif 3707#endif
2470 3708
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3710 if (expect_false (waittime < timeout_blocktime))
2473 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;
2474 3717
2475 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3719 if (expect_false (io_blocktime))
2477 { 3720 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3722
2480 if (sleeptime > waittime - backend_fudge) 3723 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3724 sleeptime = waittime - backend_mintime;
2482 3725
2483 if (expect_true (sleeptime > 0.)) 3726 if (expect_true (sleeptime > 0.))
2484 { 3727 {
2485 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3729 waittime -= sleeptime;
… …
2493#endif 3736#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 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
2498 /* update ev_rt_now, do magic */ 3751 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3752 time_update (EV_A_ waittime + sleeptime);
2500 } 3753 }
2501 3754
2502 /* queue pending timers and reschedule them */ 3755 /* queue pending timers and reschedule them */
… …
2528 loop_done = EVBREAK_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
2529 3782
2530#if EV_FEATURE_API 3783#if EV_FEATURE_API
2531 --loop_depth; 3784 --loop_depth;
2532#endif 3785#endif
2533}
2534 3786
3787 return activecnt;
3788}
3789
2535void 3790void
2536ev_break (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
2537{ 3792{
2538 loop_done = how; 3793 loop_done = how;
2539} 3794}
2540 3795
2541void 3796void
2542ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
2543{ 3798{
2544 ++activecnt; 3799 ++activecnt;
2545} 3800}
2546 3801
2547void 3802void
2548ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
2549{ 3804{
2550 --activecnt; 3805 --activecnt;
2551} 3806}
2552 3807
2553void 3808void
2554ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
2555{ 3810{
2556 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
2557} 3812}
2558 3813
2559void 3814void
2560ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
2561{ 3816{
2562 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
2563} 3818}
2564 3819
2565void 3820void
2566ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
2567{ 3822{
2568 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
2569 3824
2570 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2610 w->pending = 0; 3865 w->pending = 0;
2611 } 3866 }
2612} 3867}
2613 3868
2614int 3869int
2615ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2616{ 3871{
2617 W w_ = (W)w; 3872 W w_ = (W)w;
2618 int pending = w_->pending; 3873 int pending = w_->pending;
2619 3874
2620 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
2652 w->active = 0; 3907 w->active = 0;
2653} 3908}
2654 3909
2655/*****************************************************************************/ 3910/*****************************************************************************/
2656 3911
2657void noinline 3912noinline
3913void
2658ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2659{ 3915{
2660 int fd = w->fd; 3916 int fd = w->fd;
2661 3917
2662 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
2663 return; 3919 return;
… …
2666 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))));
2667 3923
2668 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
2669 3925
2670 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2672 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));
2673 3932
2674 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);
2675 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
2676 3935
2677 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
2678} 3937}
2679 3938
2680void noinline 3939noinline
3940void
2681ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2682{ 3942{
2683 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2685 return; 3945 return;
2686 3946
… …
2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695 3955
2696 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
2697} 3957}
2698 3958
2699void noinline 3959noinline
3960void
2700ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2701{ 3962{
2702 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2703 return; 3964 return;
2704 3965
2705 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
2708 3969
2709 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2710 3971
2711 ++timercnt; 3972 ++timercnt;
2712 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2713 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2714 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
2715 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
2716 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
2717 3978
2718 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
2719 3980
2720 /*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));*/
2721} 3982}
2722 3983
2723void noinline 3984noinline
3985void
2724ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2725{ 3987{
2726 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
2728 return; 3990 return;
2729 3991
… …
2748 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2749 4011
2750 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
2751} 4013}
2752 4014
2753void noinline 4015noinline
4016void
2754ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2755{ 4018{
2756 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
2757 4022
2758 if (ev_is_active (w)) 4023 if (ev_is_active (w))
2759 { 4024 {
2760 if (w->repeat) 4025 if (w->repeat)
2761 { 4026 {
… …
2774 4039
2775 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2776} 4041}
2777 4042
2778ev_tstamp 4043ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2780{ 4045{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 4047}
2783 4048
2784#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
2785void noinline 4050noinline
4051void
2786ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2787{ 4053{
2788 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
2789 return; 4055 return;
2790 4056
2791 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
… …
2800 4066
2801 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2802 4068
2803 ++periodiccnt; 4069 ++periodiccnt;
2804 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2805 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2806 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2807 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
2808 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
2809 4075
2810 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
2811 4077
2812 /*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));*/
2813} 4079}
2814 4080
2815void noinline 4081noinline
4082void
2816ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2817{ 4084{
2818 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
2820 return; 4087 return;
2821 4088
… …
2838 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
2839 4106
2840 EV_FREQUENT_CHECK; 4107 EV_FREQUENT_CHECK;
2841} 4108}
2842 4109
2843void noinline 4110noinline
4111void
2844ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2845{ 4113{
2846 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
2849} 4117}
… …
2853# define SA_RESTART 0 4121# define SA_RESTART 0
2854#endif 4122#endif
2855 4123
2856#if EV_SIGNAL_ENABLE 4124#if EV_SIGNAL_ENABLE
2857 4125
2858void noinline 4126noinline
4127void
2859ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2860{ 4129{
2861 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
2862 return; 4131 return;
2863 4132
2864 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));
… …
2866#if EV_MULTIPLICITY 4135#if EV_MULTIPLICITY
2867 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",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4137 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869 4138
2870 signals [w->signum - 1].loop = EV_A; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
2871#endif 4141#endif
2872 4142
2873 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2874 4144
2875#if EV_USE_SIGNALFD 4145#if EV_USE_SIGNALFD
… …
2934 } 4204 }
2935 4205
2936 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
2937} 4207}
2938 4208
2939void noinline 4209noinline
4210void
2940ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2941{ 4212{
2942 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
2944 return; 4215 return;
2945 4216
… …
2976#endif 4247#endif
2977 4248
2978#if EV_CHILD_ENABLE 4249#if EV_CHILD_ENABLE
2979 4250
2980void 4251void
2981ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2982{ 4253{
2983#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
2984 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));
2985#endif 4256#endif
2986 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
… …
2993 4264
2994 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
2995} 4266}
2996 4267
2997void 4268void
2998ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2999{ 4270{
3000 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3002 return; 4273 return;
3003 4274
… …
3020 4291
3021#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3023#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
3024 4295
3025static 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);
3026 4297
3027#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
3028 4299
3029/* 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 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3031 4302
3032static void noinline 4303noinline
4304static void
3033infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
3034{ 4306{
3035 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);
3036 4311
3037 if (w->wd >= 0) 4312 if (w->wd >= 0)
3038 { 4313 {
3039 struct statfs sfs; 4314 struct statfs sfs;
3040 4315
… …
3044 4319
3045 if (!fs_2625) 4320 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4321 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs) 4322 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */ 4323 && (sfs.f_type == 0x1373 /* devfs */
4324 || sfs.f_type == 0x4006 /* fat */
4325 || sfs.f_type == 0x4d44 /* msdos */
3049 || 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 */
3050 || sfs.f_type == 0x3153464a /* jfs */ 4330 || sfs.f_type == 0x3153464a /* jfs */
4331 || sfs.f_type == 0x9123683e /* btrfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */ 4332 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */ 4333 || sfs.f_type == 0x01021994 /* tmpfs */
3053 || sfs.f_type == 0x58465342 /* xfs */)) 4334 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4335 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else 4336 else
3056 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 */
3057 } 4338 }
… …
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3095} 4376}
3096 4377
3097static void noinline 4378noinline
4379static void
3098infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
3099{ 4381{
3100 int slot; 4382 int slot;
3101 int wd = w->wd; 4383 int wd = w->wd;
3102 4384
… …
3109 4391
3110 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
3111 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
3112} 4394}
3113 4395
3114static void noinline 4396noinline
4397static void
3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3116{ 4399{
3117 if (slot < 0) 4400 if (slot < 0)
3118 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4438 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 4439 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 4440 }
3158} 4441}
3159 4442
3160inline_size void 4443inline_size ecb_cold
4444void
3161ev_check_2625 (EV_P) 4445ev_check_2625 (EV_P)
3162{ 4446{
3163 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
3164 * 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
3165 */ 4449 */
… …
3170} 4454}
3171 4455
3172inline_size int 4456inline_size int
3173infy_newfd (void) 4457infy_newfd (void)
3174{ 4458{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4459#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4460 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 4461 if (fd >= 0)
3178 return fd; 4462 return fd;
3179#endif 4463#endif
3180 return inotify_init (); 4464 return inotify_init ();
… …
3255#else 4539#else
3256# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 4541#endif
3258 4542
3259void 4543void
3260ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3261{ 4545{
3262 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
3266} 4550}
3267 4551
3268static void noinline 4552noinline
4553static void
3269stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3270{ 4555{
3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3272 4557
3273 ev_statdata prev = w->attr; 4558 ev_statdata prev = w->attr;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 4590 }
3306} 4591}
3307 4592
3308void 4593void
3309ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3310{ 4595{
3311 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
3312 return; 4597 return;
3313 4598
3314 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
3335 4620
3336 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3337} 4622}
3338 4623
3339void 4624void
3340ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3341{ 4626{
3342 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3344 return; 4629 return;
3345 4630
… …
3361} 4646}
3362#endif 4647#endif
3363 4648
3364#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
3365void 4650void
3366ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3367{ 4652{
3368 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3369 return; 4654 return;
3370 4655
3371 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
3376 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
3377 4662
3378 ++idleall; 4663 ++idleall;
3379 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
3380 4665
3381 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);
3382 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
3383 } 4668 }
3384 4669
3385 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
3386} 4671}
3387 4672
3388void 4673void
3389ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3390{ 4675{
3391 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
3393 return; 4678 return;
3394 4679
… …
3408} 4693}
3409#endif 4694#endif
3410 4695
3411#if EV_PREPARE_ENABLE 4696#if EV_PREPARE_ENABLE
3412void 4697void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3414{ 4699{
3415 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
3416 return; 4701 return;
3417 4702
3418 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
3419 4704
3420 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
3421 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3422 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
3423 4708
3424 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
3425} 4710}
3426 4711
3427void 4712void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3429{ 4714{
3430 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
3432 return; 4717 return;
3433 4718
… …
3446} 4731}
3447#endif 4732#endif
3448 4733
3449#if EV_CHECK_ENABLE 4734#if EV_CHECK_ENABLE
3450void 4735void
3451ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3452{ 4737{
3453 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
3454 return; 4739 return;
3455 4740
3456 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
3457 4742
3458 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
3459 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3460 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
3461 4746
3462 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
3463} 4748}
3464 4749
3465void 4750void
3466ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3467{ 4752{
3468 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
3470 return; 4755 return;
3471 4756
… …
3483 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
3484} 4769}
3485#endif 4770#endif
3486 4771
3487#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
3488void noinline 4773noinline
4774void
3489ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3490{ 4776{
3491 ev_run (w->other, EVRUN_NOWAIT); 4777 ev_run (w->other, EVRUN_NOWAIT);
3492} 4778}
3493 4779
3494static void 4780static void
… …
3542 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
3543} 4829}
3544#endif 4830#endif
3545 4831
3546void 4832void
3547ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3548{ 4834{
3549 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
3550 return; 4836 return;
3551 4837
3552 { 4838 {
… …
3573 4859
3574 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
3575} 4861}
3576 4862
3577void 4863void
3578ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3579{ 4865{
3580 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
3582 return; 4868 return;
3583 4869
… …
3593} 4879}
3594#endif 4880#endif
3595 4881
3596#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
3597void 4883void
3598ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3599{ 4885{
3600 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
3601 return; 4887 return;
3602 4888
3603 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
3604 4890
3605 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
3606 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3607 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
3608 4894
3609 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3610} 4896}
3611 4897
3612void 4898void
3613ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3614{ 4900{
3615 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
3617 return; 4903 return;
3618 4904
… …
3631} 4917}
3632#endif 4918#endif
3633 4919
3634#if EV_CLEANUP_ENABLE 4920#if EV_CLEANUP_ENABLE
3635void 4921void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3637{ 4923{
3638 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
3639 return; 4925 return;
3640 4926
3641 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
3642 4928
3643 ev_start (EV_A_ (W)w, ++cleanupcnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
3645 cleanups [cleanupcnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
3646 4932
3647 /* cleanup watchers should never keep a refcount on the loop */ 4933 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A); 4934 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
3650} 4936}
3651 4937
3652void 4938void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
3654{ 4940{
3655 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
3657 return; 4943 return;
3658 4944
… …
3672} 4958}
3673#endif 4959#endif
3674 4960
3675#if EV_ASYNC_ENABLE 4961#if EV_ASYNC_ENABLE
3676void 4962void
3677ev_async_start (EV_P_ ev_async *w) 4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3678{ 4964{
3679 if (expect_false (ev_is_active (w))) 4965 if (expect_false (ev_is_active (w)))
3680 return; 4966 return;
3681 4967
3682 w->sent = 0; 4968 w->sent = 0;
… …
3684 evpipe_init (EV_A); 4970 evpipe_init (EV_A);
3685 4971
3686 EV_FREQUENT_CHECK; 4972 EV_FREQUENT_CHECK;
3687 4973
3688 ev_start (EV_A_ (W)w, ++asynccnt); 4974 ev_start (EV_A_ (W)w, ++asynccnt);
3689 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4975 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3690 asyncs [asynccnt - 1] = w; 4976 asyncs [asynccnt - 1] = w;
3691 4977
3692 EV_FREQUENT_CHECK; 4978 EV_FREQUENT_CHECK;
3693} 4979}
3694 4980
3695void 4981void
3696ev_async_stop (EV_P_ ev_async *w) 4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3697{ 4983{
3698 clear_pending (EV_A_ (W)w); 4984 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4985 if (expect_false (!ev_is_active (w)))
3700 return; 4986 return;
3701 4987
… …
3712 4998
3713 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
3714} 5000}
3715 5001
3716void 5002void
3717ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3718{ 5004{
3719 w->sent = 1; 5005 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 5006 evpipe_write (EV_A_ &async_pending);
3721} 5007}
3722#endif 5008#endif
… …
3759 5045
3760 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));
3761} 5047}
3762 5048
3763void 5049void
3764ev_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
3765{ 5051{
3766 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));
3767
3768 if (expect_false (!once))
3769 {
3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3771 return;
3772 }
3773 5053
3774 once->cb = cb; 5054 once->cb = cb;
3775 once->arg = arg; 5055 once->arg = arg;
3776 5056
3777 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
3790} 5070}
3791 5071
3792/*****************************************************************************/ 5072/*****************************************************************************/
3793 5073
3794#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
5075ecb_cold
3795void 5076void
3796ev_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
3797{ 5078{
3798 int i, j; 5079 int i, j;
3799 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
3800 5081
3801 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5125 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 5126#endif
3846 5127
3847#if EV_IDLE_ENABLE 5128#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 5129 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 5130 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 5131 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 5132 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 5133#endif
3853 5134
3854#if EV_FORK_ENABLE 5135#if EV_FORK_ENABLE
… …
3907 5188
3908#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
3910#endif 5191#endif
3911 5192
3912EV_CPP(})
3913

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