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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 1.485 by root, Mon Aug 13 10:01:19 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h> 167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
162#include <stdlib.h> 177#include <stdlib.h>
163#include <string.h> 178#include <string.h>
164#include <fcntl.h> 179#include <fcntl.h>
165#include <stddef.h> 180#include <stddef.h>
166 181
… …
178# include EV_H 193# include EV_H
179#else 194#else
180# include "ev.h" 195# include "ev.h"
181#endif 196#endif
182 197
183EV_CPP(extern "C" {) 198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
184 208
185#ifndef _WIN32 209#ifndef _WIN32
186# include <sys/time.h> 210# include <sys/time.h>
187# include <sys/wait.h> 211# include <sys/wait.h>
188# include <unistd.h> 212# include <unistd.h>
189#else 213#else
190# include <io.h> 214# include <io.h>
191# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
192# include <windows.h> 217# include <windows.h>
193# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
195# endif 220# endif
196# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
197#endif 222#endif
198 223
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
206
207/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
208 225
209/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 227#if defined EV_NSIG
211/* use what's provided */ 228/* use what's provided */
212#elif defined (NSIG) 229#elif defined NSIG
213# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 231#elif defined _NSIG
215# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 233#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 235#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 239#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 241#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 245#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 247#else
231# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
232/* to make it compile regardless, just remove the above line, */ 249#endif
233/* but consider reporting it, too! :) */ 250
234# define EV_NSIG 65 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
235#endif 253#endif
236 254
237#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 258# else
241# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
242# endif 260# endif
243#endif 261#endif
244 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
245#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 275# else
249# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
250# endif 277# endif
251#endif 278#endif
… …
338 365
339#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
341#endif 368#endif
342 369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
384#endif
385
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 389# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 390# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 391# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 393# define EV_USE_MONOTONIC 1
351# else 394# else
… …
354# endif 397# endif
355#endif 398#endif
356 399
357/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
358 401
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 402#ifndef CLOCK_MONOTONIC
366# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
367# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
368#endif 405#endif
369 406
… …
377# define EV_USE_INOTIFY 0 414# define EV_USE_INOTIFY 0
378#endif 415#endif
379 416
380#if !EV_USE_NANOSLEEP 417#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 418/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 419# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 420# include <sys/select.h>
384# endif 421# endif
385#endif 422#endif
386 423
387#if EV_USE_INOTIFY 424#if EV_USE_INOTIFY
… …
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
393# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
394# endif 431# endif
395#endif
396
397#if EV_SELECT_IS_WINSOCKET
398# include <winsock.h>
399#endif 432#endif
400 433
401#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
403# include <stdint.h> 436# include <stdint.h>
… …
443#else 476#else
444# define EV_FREQUENT_CHECK do { } while (0) 477# define EV_FREQUENT_CHECK do { } while (0)
445#endif 478#endif
446 479
447/* 480/*
448 * This is used to avoid floating point rounding problems. 481 * 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. 482 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 483 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 484#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
485/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 486
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 487#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 488#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 489
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 490#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 491#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 492
493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
494/* ECB.H BEGIN */
495/*
496 * libecb - http://software.schmorp.de/pkg/libecb
497 *
498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
499 * Copyright (©) 2011 Emanuele Giaquinta
500 * All rights reserved.
501 *
502 * Redistribution and use in source and binary forms, with or without modifica-
503 * tion, are permitted provided that the following conditions are met:
504 *
505 * 1. Redistributions of source code must retain the above copyright notice,
506 * this list of conditions and the following disclaimer.
507 *
508 * 2. Redistributions in binary form must reproduce the above copyright
509 * notice, this list of conditions and the following disclaimer in the
510 * documentation and/or other materials provided with the distribution.
511 *
512 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
513 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
514 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
515 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
516 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
533 */
534
535#ifndef ECB_H
536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
540
541#ifdef _WIN32
542 typedef signed char int8_t;
543 typedef unsigned char uint8_t;
544 typedef signed short int16_t;
545 typedef unsigned short uint16_t;
546 typedef signed int int32_t;
547 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 548 #if __GNUC__
549 typedef signed long long int64_t;
550 typedef unsigned long long uint64_t;
551 #else /* _MSC_VER || __BORLANDC__ */
552 typedef signed __int64 int64_t;
553 typedef unsigned __int64 uint64_t;
554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
564#else
565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
583#endif
584
585/* many compilers define _GNUC_ to some versions but then only implement
586 * what their idiot authors think are the "more important" extensions,
587 * causing enormous grief in return for some better fake benchmark numbers.
588 * or so.
589 * we try to detect these and simply assume they are not gcc - if they have
590 * an issue with that they should have done it right in the first place.
591 */
592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
593 #define ECB_GCC_VERSION(major,minor) 0
594#else
595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
636/*****************************************************************************/
637
638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
640
641#if ECB_NO_THREADS
642 #define ECB_NO_SMP 1
643#endif
644
645#if ECB_NO_SMP
646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #if __i386 || __i386__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
664 #elif ECB_GCC_AMD64
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
690 #elif defined __s390__ || defined __s390x__
691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
696 #elif defined __alpha__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
709 #endif
710 #endif
711#endif
712
713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
739 #elif defined _WIN32
740 #include <WinNT.h>
741 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
742 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
743 #include <mbarrier.h>
744 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
745 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
746 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
747 #elif __xlC__
748 #define ECB_MEMORY_FENCE __sync ()
749 #endif
750#endif
751
752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
770 #if !ECB_AVOID_PTHREADS
771 /*
772 * if you get undefined symbol references to pthread_mutex_lock,
773 * or failure to find pthread.h, then you should implement
774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
775 * OR provide pthread.h and link against the posix thread library
776 * of your system.
777 */
778 #include <pthread.h>
779 #define ECB_NEEDS_PTHREADS 1
780 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
781
782 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
783 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
784 #endif
785#endif
786
787#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
788 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
789#endif
790
791#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
793#endif
794
795/*****************************************************************************/
796
797#if ECB_CPP
798 #define ecb_inline static inline
799#elif ECB_GCC_VERSION(2,5)
800 #define ecb_inline static __inline__
801#elif ECB_C99
802 #define ecb_inline static inline
803#else
804 #define ecb_inline static
805#endif
806
807#if ECB_GCC_VERSION(3,3)
808 #define ecb_restrict __restrict__
809#elif ECB_C99
810 #define ecb_restrict restrict
811#else
812 #define ecb_restrict
813#endif
814
815typedef int ecb_bool;
816
817#define ECB_CONCAT_(a, b) a ## b
818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
819#define ECB_STRINGIFY_(a) # a
820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
822
823#define ecb_function_ ecb_inline
824
825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
464# define expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
465# define noinline __attribute__ ((noinline))
466#else 843#else
467# define expect(expr,value) (expr) 844 #define ecb_expect(expr,value) (expr)
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 845#endif
472#endif
473 846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
849#else
850 #define ecb_prefetch(addr,rw,locality)
851#endif
852
853/* no emulation for ecb_decltype */
854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
859 #define ecb_decltype(x) __typeof__ (x)
860#endif
861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
882#define ecb_unused ecb_attribute ((__unused__))
883#define ecb_const ecb_attribute ((__const__))
884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
897
898#if ECB_GCC_VERSION(4,3)
899 #define ecb_artificial ecb_attribute ((__artificial__))
900 #define ecb_hot ecb_attribute ((__hot__))
901 #define ecb_cold ecb_attribute ((__cold__))
902#else
903 #define ecb_artificial
904 #define ecb_hot
905 #define ecb_cold
906#endif
907
908/* put around conditional expressions if you are very sure that the */
909/* expression is mostly true or mostly false. note that these return */
910/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 911#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 912#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
913/* for compatibility to the rest of the world */
914#define ecb_likely(expr) ecb_expect_true (expr)
915#define ecb_unlikely(expr) ecb_expect_false (expr)
916
917/* count trailing zero bits and count # of one bits */
918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
925 #define ecb_ctz32(x) __builtin_ctz (x)
926 #define ecb_ctz64(x) __builtin_ctzll (x)
927 #define ecb_popcount32(x) __builtin_popcount (x)
928 /* no popcountll */
929#else
930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
931 ecb_function_ ecb_const int
932 ecb_ctz32 (uint32_t x)
933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
939 int r = 0;
940
941 x &= ~x + 1; /* this isolates the lowest bit */
942
943#if ECB_branchless_on_i386
944 r += !!(x & 0xaaaaaaaa) << 0;
945 r += !!(x & 0xcccccccc) << 1;
946 r += !!(x & 0xf0f0f0f0) << 2;
947 r += !!(x & 0xff00ff00) << 3;
948 r += !!(x & 0xffff0000) << 4;
949#else
950 if (x & 0xaaaaaaaa) r += 1;
951 if (x & 0xcccccccc) r += 2;
952 if (x & 0xf0f0f0f0) r += 4;
953 if (x & 0xff00ff00) r += 8;
954 if (x & 0xffff0000) r += 16;
955#endif
956
957 return r;
958#endif
959 }
960
961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
962 ecb_function_ ecb_const int
963 ecb_ctz64 (uint64_t x)
964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
970 int shift = x & 0xffffffff ? 0 : 32;
971 return ecb_ctz32 (x >> shift) + shift;
972#endif
973 }
974
975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
976 ecb_function_ ecb_const int
977 ecb_popcount32 (uint32_t x)
978 {
979 x -= (x >> 1) & 0x55555555;
980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
981 x = ((x >> 4) + x) & 0x0f0f0f0f;
982 x *= 0x01010101;
983
984 return x >> 24;
985 }
986
987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
995 int r = 0;
996
997 if (x >> 16) { x >>= 16; r += 16; }
998 if (x >> 8) { x >>= 8; r += 8; }
999 if (x >> 4) { x >>= 4; r += 4; }
1000 if (x >> 2) { x >>= 2; r += 2; }
1001 if (x >> 1) { r += 1; }
1002
1003 return r;
1004#endif
1005 }
1006
1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
1015 int r = 0;
1016
1017 if (x >> 32) { x >>= 32; r += 32; }
1018
1019 return r + ecb_ld32 (x);
1020#endif
1021 }
1022#endif
1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1031{
1032 return ( (x * 0x0802U & 0x22110U)
1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1034}
1035
1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1038{
1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1042 x = ( x >> 8 ) | ( x << 8);
1043
1044 return x;
1045}
1046
1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1049{
1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1054 x = ( x >> 16 ) | ( x << 16);
1055
1056 return x;
1057}
1058
1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
1060/* so for this version we are lazy */
1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1062ecb_function_ ecb_const int
1063ecb_popcount64 (uint64_t x)
1064{
1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1066}
1067
1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1076
1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1085
1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1099#else
1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1101 ecb_function_ ecb_const uint16_t
1102 ecb_bswap16 (uint16_t x)
1103 {
1104 return ecb_rotl16 (x, 8);
1105 }
1106
1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1108 ecb_function_ ecb_const uint32_t
1109 ecb_bswap32 (uint32_t x)
1110 {
1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1112 }
1113
1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1115 ecb_function_ ecb_const uint64_t
1116 ecb_bswap64 (uint64_t x)
1117 {
1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1119 }
1120#endif
1121
1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1123 #define ecb_unreachable() __builtin_unreachable ()
1124#else
1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1128#endif
1129
1130/* try to tell the compiler that some condition is definitely true */
1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1132
1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1134ecb_inline ecb_const uint32_t
1135ecb_byteorder_helper (void)
1136{
1137 /* the union code still generates code under pressure in gcc, */
1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
1159}
1160
1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1165
1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1168#else
1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1170#endif
1171
1172#if ECB_CPP
1173 template<typename T>
1174 static inline T ecb_div_rd (T val, T div)
1175 {
1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1177 }
1178 template<typename T>
1179 static inline T ecb_div_ru (T val, T div)
1180 {
1181 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1182 }
1183#else
1184 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1185 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1186#endif
1187
1188#if ecb_cplusplus_does_not_suck
1189 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1190 template<typename T, int N>
1191 static inline int ecb_array_length (const T (&arr)[N])
1192 {
1193 return N;
1194 }
1195#else
1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1197#endif
1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
1504#endif
1505
1506/* ECB.H END */
1507
1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1509/* if your architecture doesn't need memory fences, e.g. because it is
1510 * single-cpu/core, or if you use libev in a project that doesn't use libev
1511 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1512 * libev, in which cases the memory fences become nops.
1513 * alternatively, you can remove this #error and link against libpthread,
1514 * which will then provide the memory fences.
1515 */
1516# error "memory fences not defined for your architecture, please report"
1517#endif
1518
1519#ifndef ECB_MEMORY_FENCE
1520# define ECB_MEMORY_FENCE do { } while (0)
1521# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1522# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1523#endif
1524
1525#define expect_false(cond) ecb_expect_false (cond)
1526#define expect_true(cond) ecb_expect_true (cond)
1527#define noinline ecb_noinline
1528
476#define inline_size static inline 1529#define inline_size ecb_inline
477 1530
478#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
479# define inline_speed static inline 1532# define inline_speed ecb_inline
480#else 1533#else
481# define inline_speed static noinline 1534# define inline_speed noinline static
482#endif 1535#endif
483 1536
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485 1538
486#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
523# include "ev_win32.c" 1576# include "ev_win32.c"
524#endif 1577#endif
525 1578
526/*****************************************************************************/ 1579/*****************************************************************************/
527 1580
1581/* define a suitable floor function (only used by periodics atm) */
1582
1583#if EV_USE_FLOOR
1584# include <math.h>
1585# define ev_floor(v) floor (v)
1586#else
1587
1588#include <float.h>
1589
1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1592static ev_tstamp
1593ev_floor (ev_tstamp v)
1594{
1595 /* the choice of shift factor is not terribly important */
1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1598#else
1599 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1600#endif
1601
1602 /* argument too large for an unsigned long? */
1603 if (expect_false (v >= shift))
1604 {
1605 ev_tstamp f;
1606
1607 if (v == v - 1.)
1608 return v; /* very large number */
1609
1610 f = shift * ev_floor (v * (1. / shift));
1611 return f + ev_floor (v - f);
1612 }
1613
1614 /* special treatment for negative args? */
1615 if (expect_false (v < 0.))
1616 {
1617 ev_tstamp f = -ev_floor (-v);
1618
1619 return f - (f == v ? 0 : 1);
1620 }
1621
1622 /* fits into an unsigned long */
1623 return (unsigned long)v;
1624}
1625
1626#endif
1627
1628/*****************************************************************************/
1629
528#ifdef __linux 1630#ifdef __linux
529# include <sys/utsname.h> 1631# include <sys/utsname.h>
530#endif 1632#endif
531 1633
1634noinline ecb_cold
532static unsigned int noinline 1635static unsigned int
533ev_linux_version (void) 1636ev_linux_version (void)
534{ 1637{
535#ifdef __linux 1638#ifdef __linux
536 unsigned int v = 0; 1639 unsigned int v = 0;
537 struct utsname buf; 1640 struct utsname buf;
… …
566} 1669}
567 1670
568/*****************************************************************************/ 1671/*****************************************************************************/
569 1672
570#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
571static void noinline 1674noinline ecb_cold
1675static void
572ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
573{ 1677{
574 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
575} 1679}
576#endif 1680#endif
577 1681
578static void (*syserr_cb)(const char *msg); 1682static void (*syserr_cb)(const char *msg) EV_THROW;
579 1683
1684ecb_cold
580void 1685void
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
582{ 1687{
583 syserr_cb = cb; 1688 syserr_cb = cb;
584} 1689}
585 1690
586static void noinline 1691noinline ecb_cold
1692static void
587ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
588{ 1694{
589 if (!msg) 1695 if (!msg)
590 msg = "(libev) system error"; 1696 msg = "(libev) system error";
591 1697
… …
604 abort (); 1710 abort ();
605 } 1711 }
606} 1712}
607 1713
608static void * 1714static void *
609ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
610{ 1716{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
614 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
615 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
616 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
617 */ 1722 */
618 1723
619 if (size) 1724 if (size)
620 return realloc (ptr, size); 1725 return realloc (ptr, size);
621 1726
622 free (ptr); 1727 free (ptr);
623 return 0; 1728 return 0;
624#endif
625} 1729}
626 1730
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1732
1733ecb_cold
629void 1734void
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
631{ 1736{
632 alloc = cb; 1737 alloc = cb;
633} 1738}
634 1739
635inline_speed void * 1740inline_speed void *
… …
723 #undef VAR 1828 #undef VAR
724 }; 1829 };
725 #include "ev_wrap.h" 1830 #include "ev_wrap.h"
726 1831
727 static struct ev_loop default_loop_struct; 1832 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1833 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1834
730#else 1835#else
731 1836
732 ev_tstamp ev_rt_now; 1837 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; 1838 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1839 #include "ev_vars.h"
735 #undef VAR 1840 #undef VAR
736 1841
737 static int ev_default_loop_ptr; 1842 static int ev_default_loop_ptr;
… …
752 1857
753/*****************************************************************************/ 1858/*****************************************************************************/
754 1859
755#ifndef EV_HAVE_EV_TIME 1860#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1861ev_tstamp
757ev_time (void) 1862ev_time (void) EV_THROW
758{ 1863{
759#if EV_USE_REALTIME 1864#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1865 if (expect_true (have_realtime))
761 { 1866 {
762 struct timespec ts; 1867 struct timespec ts;
… …
786 return ev_time (); 1891 return ev_time ();
787} 1892}
788 1893
789#if EV_MULTIPLICITY 1894#if EV_MULTIPLICITY
790ev_tstamp 1895ev_tstamp
791ev_now (EV_P) 1896ev_now (EV_P) EV_THROW
792{ 1897{
793 return ev_rt_now; 1898 return ev_rt_now;
794} 1899}
795#endif 1900#endif
796 1901
797void 1902void
798ev_sleep (ev_tstamp delay) 1903ev_sleep (ev_tstamp delay) EV_THROW
799{ 1904{
800 if (delay > 0.) 1905 if (delay > 0.)
801 { 1906 {
802#if EV_USE_NANOSLEEP 1907#if EV_USE_NANOSLEEP
803 struct timespec ts; 1908 struct timespec ts;
804 1909
805 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
808 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
809#else 1916#else
810 struct timeval tv; 1917 struct timeval tv;
811 1918
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1923 select (0, 0, 0, 0, &tv);
817#endif 1924#endif
818 } 1925 }
819} 1926}
820 1927
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/*****************************************************************************/ 1928/*****************************************************************************/
830 1929
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1930#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1931
833/* find a suitable new size for the given array, */ 1932/* find a suitable new size for the given array, */
… …
839 1938
840 do 1939 do
841 ncur <<= 1; 1940 ncur <<= 1;
842 while (cnt > ncur); 1941 while (cnt > ncur);
843 1942
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1943 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1944 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1945 {
847 ncur *= elem; 1946 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1947 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1948 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1950 }
852 1951
853 return ncur; 1952 return ncur;
854} 1953}
855 1954
856static noinline void * 1955noinline ecb_cold
1956static void *
857array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1958{
859 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
861} 1961}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1965
866#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
868 { \ 1968 { \
869 int ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1973 }
874 1974
… …
886 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
887 1987
888/*****************************************************************************/ 1988/*****************************************************************************/
889 1989
890/* dummy callback for pending events */ 1990/* dummy callback for pending events */
891static void noinline 1991noinline
1992static void
892pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1994{
894} 1995}
895 1996
896void noinline 1997noinline
1998void
897ev_feed_event (EV_P_ void *w, int revents) 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 2000{
899 W w_ = (W)w; 2001 W w_ = (W)w;
900 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
901 2003
902 if (expect_false (w_->pending)) 2004 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 2008 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2009 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 2010 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 2011 pendings [pri][w_->pending - 1].events = revents;
910 } 2012 }
2013
2014 pendingpri = NUMPRI - 1;
911} 2015}
912 2016
913inline_speed void 2017inline_speed void
914feed_reverse (EV_P_ W w) 2018feed_reverse (EV_P_ W w)
915{ 2019{
… …
961 if (expect_true (!anfd->reify)) 2065 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 2066 fd_event_nocheck (EV_A_ fd, revents);
963} 2067}
964 2068
965void 2069void
966ev_feed_fd_event (EV_P_ int fd, int revents) 2070ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 2071{
968 if (fd >= 0 && fd < anfdmax) 2072 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 2073 fd_event_nocheck (EV_A_ fd, revents);
970} 2074}
971 2075
… …
980 for (i = 0; i < fdchangecnt; ++i) 2084 for (i = 0; i < fdchangecnt; ++i)
981 { 2085 {
982 int fd = fdchanges [i]; 2086 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 2087 ANFD *anfd = anfds + fd;
984 2088
985 if (anfd->reify & EV__IOFDSET) 2089 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 2090 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 2091 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 2092
989 if (handle != anfd->handle) 2093 if (handle != anfd->handle)
990 { 2094 {
… …
1029 2133
1030 fdchangecnt = 0; 2134 fdchangecnt = 0;
1031} 2135}
1032 2136
1033/* something about the given fd changed */ 2137/* something about the given fd changed */
1034inline_size void 2138inline_size
2139void
1035fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1036{ 2141{
1037 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1038 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1039 2144
… …
1044 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1045 } 2150 }
1046} 2151}
1047 2152
1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void 2154inline_speed ecb_cold void
1050fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1051{ 2156{
1052 ev_io *w; 2157 ev_io *w;
1053 2158
1054 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1058 } 2163 }
1059} 2164}
1060 2165
1061/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 2167inline_size ecb_cold int
1063fd_valid (int fd) 2168fd_valid (int fd)
1064{ 2169{
1065#ifdef _WIN32 2170#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 2172#else
1068 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1069#endif 2174#endif
1070} 2175}
1071 2176
1072/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1073static void noinline 2178noinline ecb_cold
2179static void
1074fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1075{ 2181{
1076 int fd; 2182 int fd;
1077 2183
1078 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1082} 2188}
1083 2189
1084/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1085static void noinline 2191noinline ecb_cold
2192static void
1086fd_enomem (EV_P) 2193fd_enomem (EV_P)
1087{ 2194{
1088 int fd; 2195 int fd;
1089 2196
1090 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1094 break; 2201 break;
1095 } 2202 }
1096} 2203}
1097 2204
1098/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1099static void noinline 2206noinline
2207static void
1100fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1101{ 2209{
1102 int fd; 2210 int fd;
1103 2211
1104 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1285 2393
1286/*****************************************************************************/ 2394/*****************************************************************************/
1287 2395
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 2397
1290static void noinline 2398noinline ecb_cold
2399static void
1291evpipe_init (EV_P) 2400evpipe_init (EV_P)
1292{ 2401{
1293 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1294 { 2403 {
2404 int fds [2];
2405
1295# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1298 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1299 2411
1300 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1301 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1302 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1303 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1304 ev_io_set (&pipe_w, evfd, EV_READ); 2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
2444inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448
2449 if (expect_true (*flag))
2450 return;
2451
2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
2468#if EV_USE_EVENTFD
2469 if (evpipe [0] < 0)
2470 {
2471 uint64_t counter = 1;
2472 write (evpipe [1], &counter, sizeof (uint64_t));
1305 } 2473 }
1306 else 2474 else
1307# endif 2475#endif
1308 { 2476 {
1309 while (pipe (evpipe)) 2477#ifdef _WIN32
1310 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1311 2479 DWORD sent;
1312 fd_intern (evpipe [0]); 2480 buf.buf = (char *)&buf;
1313 fd_intern (evpipe [1]); 2481 buf.len = 1;
1314 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2483#else
2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1315 } 2486 }
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 2487
1347 errno = old_errno; 2488 errno = old_errno;
1348 } 2489 }
1349} 2490}
1350 2491
… …
1353static void 2494static void
1354pipecb (EV_P_ ev_io *iow, int revents) 2495pipecb (EV_P_ ev_io *iow, int revents)
1355{ 2496{
1356 int i; 2497 int i;
1357 2498
2499 if (revents & EV_READ)
2500 {
1358#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1359 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1360 { 2503 {
1361 uint64_t counter; 2504 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1363 } 2506 }
1364 else 2507 else
1365#endif 2508#endif
1366 { 2509 {
1367 char dummy; 2510 char dummy[4];
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1369 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
2521 }
1370 } 2522 }
2523
2524 pipe_write_skipped = 0;
2525
2526 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 2527
1372#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 2529 if (sig_pending)
1374 { 2530 {
1375 sig_pending = 0; 2531 sig_pending = 0;
2532
2533 ECB_MEMORY_FENCE;
1376 2534
1377 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1380 } 2538 }
… …
1382 2540
1383#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1384 if (async_pending) 2542 if (async_pending)
1385 { 2543 {
1386 async_pending = 0; 2544 async_pending = 0;
2545
2546 ECB_MEMORY_FENCE;
1387 2547
1388 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1390 { 2550 {
1391 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1392 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1393 } 2554 }
1394 } 2555 }
1395#endif 2556#endif
1396} 2557}
1397 2558
1398/*****************************************************************************/ 2559/*****************************************************************************/
1399 2560
1400void 2561void
1401ev_feed_signal (int signum) 2562ev_feed_signal (int signum) EV_THROW
1402{ 2563{
1403#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1404 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1405 2568
1406 if (!EV_A) 2569 if (!EV_A)
1407 return; 2570 return;
1408#endif 2571#endif
1409 2572
… …
1419#endif 2582#endif
1420 2583
1421 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1422} 2585}
1423 2586
1424void noinline 2587noinline
2588void
1425ev_feed_signal_event (EV_P_ int signum) 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1426{ 2590{
1427 WL w; 2591 WL w;
1428 2592
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1430 return; 2594 return;
1431 2595
1432 --signum; 2596 --signum;
1433 2597
1434#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1438 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1439 return; 2603 return;
1440#endif 2604#endif
1441 2605
1442 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
1443 2608
1444 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1446} 2611}
1447 2612
… …
1545#endif 2710#endif
1546#if EV_USE_SELECT 2711#if EV_USE_SELECT
1547# include "ev_select.c" 2712# include "ev_select.c"
1548#endif 2713#endif
1549 2714
1550int 2715ecb_cold int
1551ev_version_major (void) 2716ev_version_major (void) EV_THROW
1552{ 2717{
1553 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
1554} 2719}
1555 2720
1556int 2721ecb_cold int
1557ev_version_minor (void) 2722ev_version_minor (void) EV_THROW
1558{ 2723{
1559 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
1560} 2725}
1561 2726
1562/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
1563int inline_size 2728inline_size ecb_cold int
1564enable_secure (void) 2729enable_secure (void)
1565{ 2730{
1566#ifdef _WIN32 2731#ifdef _WIN32
1567 return 0; 2732 return 0;
1568#else 2733#else
1569 return getuid () != geteuid () 2734 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2735 || getgid () != getegid ();
1571#endif 2736#endif
1572} 2737}
1573 2738
2739ecb_cold
1574unsigned int 2740unsigned int
1575ev_supported_backends (void) 2741ev_supported_backends (void) EV_THROW
1576{ 2742{
1577 unsigned int flags = 0; 2743 unsigned int flags = 0;
1578 2744
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2746 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1584 2750
1585 return flags; 2751 return flags;
1586} 2752}
1587 2753
2754ecb_cold
1588unsigned int 2755unsigned int
1589ev_recommended_backends (void) 2756ev_recommended_backends (void) EV_THROW
1590{ 2757{
1591 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
1592 2759
1593#ifndef __NetBSD__ 2760#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2761 /* kqueue is borked on everything but netbsd apparently */
… …
1605#endif 2772#endif
1606 2773
1607 return flags; 2774 return flags;
1608} 2775}
1609 2776
2777ecb_cold
1610unsigned int 2778unsigned int
1611ev_embeddable_backends (void) 2779ev_embeddable_backends (void) EV_THROW
1612{ 2780{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2782
1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* 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 */ 2784 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1618 2786
1619 return flags; 2787 return flags;
1620} 2788}
1621 2789
1622unsigned int 2790unsigned int
1623ev_backend (EV_P) 2791ev_backend (EV_P) EV_THROW
1624{ 2792{
1625 return backend; 2793 return backend;
1626} 2794}
1627 2795
1628#if EV_FEATURE_API 2796#if EV_FEATURE_API
1629unsigned int 2797unsigned int
1630ev_iteration (EV_P) 2798ev_iteration (EV_P) EV_THROW
1631{ 2799{
1632 return loop_count; 2800 return loop_count;
1633} 2801}
1634 2802
1635unsigned int 2803unsigned int
1636ev_depth (EV_P) 2804ev_depth (EV_P) EV_THROW
1637{ 2805{
1638 return loop_depth; 2806 return loop_depth;
1639} 2807}
1640 2808
1641void 2809void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2810ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1643{ 2811{
1644 io_blocktime = interval; 2812 io_blocktime = interval;
1645} 2813}
1646 2814
1647void 2815void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2816ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1649{ 2817{
1650 timeout_blocktime = interval; 2818 timeout_blocktime = interval;
1651} 2819}
1652 2820
1653void 2821void
1654ev_set_userdata (EV_P_ void *data) 2822ev_set_userdata (EV_P_ void *data) EV_THROW
1655{ 2823{
1656 userdata = data; 2824 userdata = data;
1657} 2825}
1658 2826
1659void * 2827void *
1660ev_userdata (EV_P) 2828ev_userdata (EV_P) EV_THROW
1661{ 2829{
1662 return userdata; 2830 return userdata;
1663} 2831}
1664 2832
2833void
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1666{ 2835{
1667 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
1668} 2837}
1669 2838
2839void
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2840ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1671{ 2841{
1672 release_cb = release; 2842 release_cb = release;
1673 acquire_cb = acquire; 2843 acquire_cb = acquire;
1674} 2844}
1675#endif 2845#endif
1676 2846
1677/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2848noinline ecb_cold
2849static void
1679loop_init (EV_P_ unsigned int flags) 2850loop_init (EV_P_ unsigned int flags) EV_THROW
1680{ 2851{
1681 if (!backend) 2852 if (!backend)
1682 { 2853 {
1683 origflags = flags; 2854 origflags = flags;
1684 2855
… …
1711 if (!(flags & EVFLAG_NOENV) 2882 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2883 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2884 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2885 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2886
1716 ev_rt_now = ev_time (); 2887 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2888 mn_now = get_clock ();
1718 now_floor = mn_now; 2889 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2890 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2891#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2892 invoke_cb = ev_invoke_pending;
1722#endif 2893#endif
1723 2894
1724 io_blocktime = 0.; 2895 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2896 timeout_blocktime = 0.;
1726 backend = 0; 2897 backend = 0;
1727 backend_fd = -1; 2898 backend_fd = -1;
1728 sig_pending = 0; 2899 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2901 async_pending = 0;
1731#endif 2902#endif
2903 pipe_write_skipped = 0;
2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
1732#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2909#endif
1735#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2912#endif
1738 2913
1739 if (!(flags & EVBACKEND_MASK)) 2914 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2915 flags |= ev_recommended_backends ();
1741 2916
… …
1766#endif 2941#endif
1767 } 2942 }
1768} 2943}
1769 2944
1770/* free up a loop structure */ 2945/* free up a loop structure */
2946ecb_cold
1771void 2947void
1772ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
1773{ 2949{
1774 int i; 2950 int i;
1775 2951
… …
1787 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
1788 } 2964 }
1789#endif 2965#endif
1790 2966
1791#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1793 { 2969 {
1794 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
1796 } 2972 }
1797#endif 2973#endif
… …
1799 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
1800 { 2976 {
1801 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
1802 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
1803 2979
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]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1813 }
1814 } 2982 }
1815 2983
1816#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
1818 close (sigfd); 2986 close (sigfd);
… …
1904#endif 3072#endif
1905#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
1906 infy_fork (EV_A); 3074 infy_fork (EV_A);
1907#endif 3075#endif
1908 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1909 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
1910 { 3079 {
1911 /* this "locks" the handlers against writing to the pipe */ 3080 /* 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 3081
1918 ev_ref (EV_A); 3082 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
1920 3084
1921#if EV_USE_EVENTFD
1922 if (evfd >= 0)
1923 close (evfd);
1924#endif
1925
1926 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
1927 {
1928 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1930 }
1931 3087
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1933 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
1934 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
1935 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1936#endif
1937 } 3091 }
3092#endif
1938 3093
1939 postfork = 0; 3094 postfork = 0;
1940} 3095}
1941 3096
1942#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
1943 3098
3099ecb_cold
1944struct ev_loop * 3100struct ev_loop *
1945ev_loop_new (unsigned int flags) 3101ev_loop_new (unsigned int flags) EV_THROW
1946{ 3102{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 3104
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 3106 loop_init (EV_A_ flags);
… …
1957} 3113}
1958 3114
1959#endif /* multiplicity */ 3115#endif /* multiplicity */
1960 3116
1961#if EV_VERIFY 3117#if EV_VERIFY
1962static void noinline 3118noinline ecb_cold
3119static void
1963verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
1964{ 3121{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966 3123
1967 if (w->pending) 3124 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969} 3126}
1970 3127
1971static void noinline 3128noinline ecb_cold
3129static void
1972verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
1973{ 3131{
1974 int i; 3132 int i;
1975 3133
1976 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 3139
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 3141 }
1984} 3142}
1985 3143
1986static void noinline 3144noinline ecb_cold
3145static void
1987array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
1988{ 3147{
1989 while (cnt--) 3148 while (cnt--)
1990 { 3149 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 3152 }
1994} 3153}
1995#endif 3154#endif
1996 3155
1997#if EV_FEATURE_API 3156#if EV_FEATURE_API
1998void 3157void ecb_cold
1999ev_verify (EV_P) 3158ev_verify (EV_P) EV_THROW
2000{ 3159{
2001#if EV_VERIFY 3160#if EV_VERIFY
2002 int i; 3161 int i;
2003 WL w; 3162 WL w, w2;
2004 3163
2005 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2006 3165
2007 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 3169
2011 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2013 for (w = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 3176 {
2015 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
3178
3179 if (j++ & 1)
3180 {
3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 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)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 } 3187 }
3188 }
2019 3189
2020 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2021 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2022 3192
2023#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2069#endif 3239#endif
2070} 3240}
2071#endif 3241#endif
2072 3242
2073#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2074struct ev_loop * 3245struct ev_loop *
2075#else 3246#else
2076int 3247int
2077#endif 3248#endif
2078ev_default_loop (unsigned int flags) 3249ev_default_loop (unsigned int flags) EV_THROW
2079{ 3250{
2080 if (!ev_default_loop_ptr) 3251 if (!ev_default_loop_ptr)
2081 { 3252 {
2082#if EV_MULTIPLICITY 3253#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 3254 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 3273
2103 return ev_default_loop_ptr; 3274 return ev_default_loop_ptr;
2104} 3275}
2105 3276
2106void 3277void
2107ev_loop_fork (EV_P) 3278ev_loop_fork (EV_P) EV_THROW
2108{ 3279{
2109 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2110} 3281}
2111 3282
2112/*****************************************************************************/ 3283/*****************************************************************************/
2113 3284
2114void 3285void
… …
2116{ 3287{
2117 EV_CB_INVOKE ((W)w, revents); 3288 EV_CB_INVOKE ((W)w, revents);
2118} 3289}
2119 3290
2120unsigned int 3291unsigned int
2121ev_pending_count (EV_P) 3292ev_pending_count (EV_P) EV_THROW
2122{ 3293{
2123 int pri; 3294 int pri;
2124 unsigned int count = 0; 3295 unsigned int count = 0;
2125 3296
2126 for (pri = NUMPRI; pri--; ) 3297 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2128 3299
2129 return count; 3300 return count;
2130} 3301}
2131 3302
2132void noinline 3303noinline
3304void
2133ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2134{ 3306{
2135 int pri; 3307 pendingpri = NUMPRI;
2136 3308
2137 for (pri = NUMPRI; pri--; ) 3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2138 while (pendingcnt [pri]) 3314 while (pendingcnt [pendingpri])
2139 { 3315 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 3317
2142 p->w->pending = 0; 3318 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2145 } 3321 }
3322 }
3323 while (pendingpri);
2146} 3324}
2147 3325
2148#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2149/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2150/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2208 } 3386 }
2209} 3387}
2210 3388
2211#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
2212 3390
2213inline_speed void 3391noinline
3392static void
2214periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
2215{ 3394{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 3396 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; 3397
3398 /* the above almost always errs on the low side */
3399 while (at <= ev_rt_now)
3400 {
3401 ev_tstamp nat = at + w->interval;
3402
3403 /* when resolution fails us, we use ev_rt_now */
3404 if (expect_false (nat == at))
3405 {
3406 at = ev_rt_now;
3407 break;
3408 }
3409
3410 at = nat;
3411 }
3412
3413 ev_at (w) = at;
2219} 3414}
2220 3415
2221/* make periodics pending */ 3416/* make periodics pending */
2222inline_size void 3417inline_size void
2223periodics_reify (EV_P) 3418periodics_reify (EV_P)
2224{ 3419{
2225 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2226 3421
2227 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2228 { 3423 {
2229 int feed_count = 0;
2230
2231 do 3424 do
2232 { 3425 {
2233 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2234 3427
2235 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2245 downheap (periodics, periodiccnt, HEAP0); 3438 downheap (periodics, periodiccnt, HEAP0);
2246 } 3439 }
2247 else if (w->interval) 3440 else if (w->interval)
2248 { 3441 {
2249 periodic_recalc (EV_A_ w); 3442 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]); 3443 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 3444 downheap (periodics, periodiccnt, HEAP0);
2266 } 3445 }
2267 else 3446 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3447 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 3455 }
2277} 3456}
2278 3457
2279/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline 3460noinline ecb_cold
3461static void
2282periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2283{ 3463{
2284 int i; 3464 int i;
2285 3465
2286 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2300} 3480}
2301#endif 3481#endif
2302 3482
2303/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2304static void noinline 3484noinline ecb_cold
3485static void
2305timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 3487{
2307 int i; 3488 int i;
2308 3489
2309 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
2346 * doesn't hurt either as we only do this on time-jumps or 3527 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 3528 * in the unlikely event of having been preempted here.
2348 */ 3529 */
2349 for (i = 4; --i; ) 3530 for (i = 4; --i; )
2350 { 3531 {
3532 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 3533 rtmn_diff = ev_rt_now - mn_now;
2352 3534
3535 diff = odiff - rtmn_diff;
3536
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3537 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 3538 return; /* all is well */
2355 3539
2356 ev_rt_now = ev_time (); 3540 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 3541 mn_now = get_clock ();
2358 now_floor = mn_now; 3542 now_floor = mn_now;
… …
2380 3564
2381 mn_now = ev_rt_now; 3565 mn_now = ev_rt_now;
2382 } 3566 }
2383} 3567}
2384 3568
2385void 3569int
2386ev_run (EV_P_ int flags) 3570ev_run (EV_P_ int flags)
2387{ 3571{
2388#if EV_FEATURE_API 3572#if EV_FEATURE_API
2389 ++loop_depth; 3573 ++loop_depth;
2390#endif 3574#endif
… …
2448 ev_tstamp prev_mn_now = mn_now; 3632 ev_tstamp prev_mn_now = mn_now;
2449 3633
2450 /* update time to cancel out callback processing overhead */ 3634 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3635 time_update (EV_A_ 1e100);
2452 3636
3637 /* from now on, we want a pipe-wake-up */
3638 pipe_write_wanted = 1;
3639
3640 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3641
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3642 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3643 {
2455 waittime = MAX_BLOCKTIME; 3644 waittime = MAX_BLOCKTIME;
2456 3645
2457 if (timercnt) 3646 if (timercnt)
2458 { 3647 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3648 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3649 if (waittime > to) waittime = to;
2461 } 3650 }
2462 3651
2463#if EV_PERIODIC_ENABLE 3652#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3653 if (periodiccnt)
2465 { 3654 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3655 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3656 if (waittime > to) waittime = to;
2468 } 3657 }
2469#endif 3658#endif
2470 3659
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3660 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3661 if (expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime; 3662 waittime = timeout_blocktime;
3663
3664 /* at this point, we NEED to wait, so we have to ensure */
3665 /* to pass a minimum nonzero value to the backend */
3666 if (expect_false (waittime < backend_mintime))
3667 waittime = backend_mintime;
2474 3668
2475 /* extra check because io_blocktime is commonly 0 */ 3669 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3670 if (expect_false (io_blocktime))
2477 { 3671 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3672 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3673
2480 if (sleeptime > waittime - backend_fudge) 3674 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3675 sleeptime = waittime - backend_mintime;
2482 3676
2483 if (expect_true (sleeptime > 0.)) 3677 if (expect_true (sleeptime > 0.))
2484 { 3678 {
2485 ev_sleep (sleeptime); 3679 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3680 waittime -= sleeptime;
… …
2493#endif 3687#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 3691
3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3695 if (pipe_write_skipped)
3696 {
3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3699 }
3700
3701
2498 /* update ev_rt_now, do magic */ 3702 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3703 time_update (EV_A_ waittime + sleeptime);
2500 } 3704 }
2501 3705
2502 /* queue pending timers and reschedule them */ 3706 /* queue pending timers and reschedule them */
… …
2528 loop_done = EVBREAK_CANCEL; 3732 loop_done = EVBREAK_CANCEL;
2529 3733
2530#if EV_FEATURE_API 3734#if EV_FEATURE_API
2531 --loop_depth; 3735 --loop_depth;
2532#endif 3736#endif
2533}
2534 3737
3738 return activecnt;
3739}
3740
2535void 3741void
2536ev_break (EV_P_ int how) 3742ev_break (EV_P_ int how) EV_THROW
2537{ 3743{
2538 loop_done = how; 3744 loop_done = how;
2539} 3745}
2540 3746
2541void 3747void
2542ev_ref (EV_P) 3748ev_ref (EV_P) EV_THROW
2543{ 3749{
2544 ++activecnt; 3750 ++activecnt;
2545} 3751}
2546 3752
2547void 3753void
2548ev_unref (EV_P) 3754ev_unref (EV_P) EV_THROW
2549{ 3755{
2550 --activecnt; 3756 --activecnt;
2551} 3757}
2552 3758
2553void 3759void
2554ev_now_update (EV_P) 3760ev_now_update (EV_P) EV_THROW
2555{ 3761{
2556 time_update (EV_A_ 1e100); 3762 time_update (EV_A_ 1e100);
2557} 3763}
2558 3764
2559void 3765void
2560ev_suspend (EV_P) 3766ev_suspend (EV_P) EV_THROW
2561{ 3767{
2562 ev_now_update (EV_A); 3768 ev_now_update (EV_A);
2563} 3769}
2564 3770
2565void 3771void
2566ev_resume (EV_P) 3772ev_resume (EV_P) EV_THROW
2567{ 3773{
2568 ev_tstamp mn_prev = mn_now; 3774 ev_tstamp mn_prev = mn_now;
2569 3775
2570 ev_now_update (EV_A); 3776 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3777 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2610 w->pending = 0; 3816 w->pending = 0;
2611 } 3817 }
2612} 3818}
2613 3819
2614int 3820int
2615ev_clear_pending (EV_P_ void *w) 3821ev_clear_pending (EV_P_ void *w) EV_THROW
2616{ 3822{
2617 W w_ = (W)w; 3823 W w_ = (W)w;
2618 int pending = w_->pending; 3824 int pending = w_->pending;
2619 3825
2620 if (expect_true (pending)) 3826 if (expect_true (pending))
… …
2652 w->active = 0; 3858 w->active = 0;
2653} 3859}
2654 3860
2655/*****************************************************************************/ 3861/*****************************************************************************/
2656 3862
2657void noinline 3863noinline
3864void
2658ev_io_start (EV_P_ ev_io *w) 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
2659{ 3866{
2660 int fd = w->fd; 3867 int fd = w->fd;
2661 3868
2662 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2663 return; 3870 return;
… …
2669 3876
2670 ev_start (EV_A_ (W)w, 1); 3877 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3878 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2672 wlist_add (&anfds[fd].head, (WL)w); 3879 wlist_add (&anfds[fd].head, (WL)w);
2673 3880
3881 /* common bug, apparently */
3882 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3883
2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3884 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2675 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
2676 3886
2677 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2678} 3888}
2679 3889
2680void noinline 3890noinline
3891void
2681ev_io_stop (EV_P_ ev_io *w) 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
2682{ 3893{
2683 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
2685 return; 3896 return;
2686 3897
… …
2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2695 3906
2696 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2697} 3908}
2698 3909
2699void noinline 3910noinline
3911void
2700ev_timer_start (EV_P_ ev_timer *w) 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2701{ 3913{
2702 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2703 return; 3915 return;
2704 3916
2705 ev_at (w) += mn_now; 3917 ev_at (w) += mn_now;
… …
2718 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
2719 3931
2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2721} 3933}
2722 3934
2723void noinline 3935noinline
3936void
2724ev_timer_stop (EV_P_ ev_timer *w) 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2725{ 3938{
2726 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
2728 return; 3941 return;
2729 3942
… …
2748 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2749 3962
2750 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
2751} 3964}
2752 3965
2753void noinline 3966noinline
3967void
2754ev_timer_again (EV_P_ ev_timer *w) 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2755{ 3969{
2756 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3971
3972 clear_pending (EV_A_ (W)w);
2757 3973
2758 if (ev_is_active (w)) 3974 if (ev_is_active (w))
2759 { 3975 {
2760 if (w->repeat) 3976 if (w->repeat)
2761 { 3977 {
… …
2774 3990
2775 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2776} 3992}
2777 3993
2778ev_tstamp 3994ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 3995ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2780{ 3996{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 3998}
2783 3999
2784#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
2785void noinline 4001noinline
4002void
2786ev_periodic_start (EV_P_ ev_periodic *w) 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2787{ 4004{
2788 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
2789 return; 4006 return;
2790 4007
2791 if (w->reschedule_cb) 4008 if (w->reschedule_cb)
… …
2810 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
2811 4028
2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2813} 4030}
2814 4031
2815void noinline 4032noinline
4033void
2816ev_periodic_stop (EV_P_ ev_periodic *w) 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2817{ 4035{
2818 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2820 return; 4038 return;
2821 4039
… …
2838 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
2839 4057
2840 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
2841} 4059}
2842 4060
2843void noinline 4061noinline
4062void
2844ev_periodic_again (EV_P_ ev_periodic *w) 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2845{ 4064{
2846 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
2849} 4068}
… …
2853# define SA_RESTART 0 4072# define SA_RESTART 0
2854#endif 4073#endif
2855 4074
2856#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
2857 4076
2858void noinline 4077noinline
4078void
2859ev_signal_start (EV_P_ ev_signal *w) 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2860{ 4080{
2861 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
2862 return; 4082 return;
2863 4083
2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4084 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2866#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops", 4087 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2869 4089
2870 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
2871#endif 4092#endif
2872 4093
2873 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
2874 4095
2875#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
2934 } 4155 }
2935 4156
2936 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2937} 4158}
2938 4159
2939void noinline 4160noinline
4161void
2940ev_signal_stop (EV_P_ ev_signal *w) 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2941{ 4163{
2942 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
2944 return; 4166 return;
2945 4167
… …
2976#endif 4198#endif
2977 4199
2978#if EV_CHILD_ENABLE 4200#if EV_CHILD_ENABLE
2979 4201
2980void 4202void
2981ev_child_start (EV_P_ ev_child *w) 4203ev_child_start (EV_P_ ev_child *w) EV_THROW
2982{ 4204{
2983#if EV_MULTIPLICITY 4205#if EV_MULTIPLICITY
2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4206 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2985#endif 4207#endif
2986 if (expect_false (ev_is_active (w))) 4208 if (expect_false (ev_is_active (w)))
… …
2993 4215
2994 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2995} 4217}
2996 4218
2997void 4219void
2998ev_child_stop (EV_P_ ev_child *w) 4220ev_child_stop (EV_P_ ev_child *w) EV_THROW
2999{ 4221{
3000 clear_pending (EV_A_ (W)w); 4222 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 4223 if (expect_false (!ev_is_active (w)))
3002 return; 4224 return;
3003 4225
… …
3020 4242
3021#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3022#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3023#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3024 4246
3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3026 4248
3027#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3028 4250
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* 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) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3031 4253
3032static void noinline 4254noinline
4255static void
3033infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3034{ 4257{
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); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
3036 4262
3037 if (w->wd >= 0) 4263 if (w->wd >= 0)
3038 { 4264 {
3039 struct statfs sfs; 4265 struct statfs sfs;
3040 4266
… …
3044 4270
3045 if (!fs_2625) 4271 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */ 4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
3050 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
3053 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else 4287 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3057 } 4289 }
… …
3092 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3093 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
3094 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3095} 4327}
3096 4328
3097static void noinline 4329noinline
4330static void
3098infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
3099{ 4332{
3100 int slot; 4333 int slot;
3101 int wd = w->wd; 4334 int wd = w->wd;
3102 4335
… …
3109 4342
3110 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3111 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3112} 4345}
3113 4346
3114static void noinline 4347noinline
4348static void
3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3116{ 4350{
3117 if (slot < 0) 4351 if (slot < 0)
3118 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 4391 }
3158} 4392}
3159 4393
3160inline_size void 4394inline_size ecb_cold
4395void
3161ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3162{ 4397{
3163 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */ 4400 */
… …
3170} 4405}
3171 4406
3172inline_size int 4407inline_size int
3173infy_newfd (void) 4408infy_newfd (void)
3174{ 4409{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4410#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4411 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 4412 if (fd >= 0)
3178 return fd; 4413 return fd;
3179#endif 4414#endif
3180 return inotify_init (); 4415 return inotify_init ();
… …
3255#else 4490#else
3256# define EV_LSTAT(p,b) lstat (p, b) 4491# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 4492#endif
3258 4493
3259void 4494void
3260ev_stat_stat (EV_P_ ev_stat *w) 4495ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3261{ 4496{
3262 if (lstat (w->path, &w->attr) < 0) 4497 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3266} 4501}
3267 4502
3268static void noinline 4503noinline
4504static void
3269stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3270{ 4506{
3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3272 4508
3273 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 4540 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 4541 }
3306} 4542}
3307 4543
3308void 4544void
3309ev_stat_start (EV_P_ ev_stat *w) 4545ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3310{ 4546{
3311 if (expect_false (ev_is_active (w))) 4547 if (expect_false (ev_is_active (w)))
3312 return; 4548 return;
3313 4549
3314 ev_stat_stat (EV_A_ w); 4550 ev_stat_stat (EV_A_ w);
… …
3335 4571
3336 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3337} 4573}
3338 4574
3339void 4575void
3340ev_stat_stop (EV_P_ ev_stat *w) 4576ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3341{ 4577{
3342 clear_pending (EV_A_ (W)w); 4578 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 4579 if (expect_false (!ev_is_active (w)))
3344 return; 4580 return;
3345 4581
… …
3361} 4597}
3362#endif 4598#endif
3363 4599
3364#if EV_IDLE_ENABLE 4600#if EV_IDLE_ENABLE
3365void 4601void
3366ev_idle_start (EV_P_ ev_idle *w) 4602ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3367{ 4603{
3368 if (expect_false (ev_is_active (w))) 4604 if (expect_false (ev_is_active (w)))
3369 return; 4605 return;
3370 4606
3371 pri_adjust (EV_A_ (W)w); 4607 pri_adjust (EV_A_ (W)w);
… …
3384 4620
3385 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3386} 4622}
3387 4623
3388void 4624void
3389ev_idle_stop (EV_P_ ev_idle *w) 4625ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3390{ 4626{
3391 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3393 return; 4629 return;
3394 4630
… …
3408} 4644}
3409#endif 4645#endif
3410 4646
3411#if EV_PREPARE_ENABLE 4647#if EV_PREPARE_ENABLE
3412void 4648void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4649ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3414{ 4650{
3415 if (expect_false (ev_is_active (w))) 4651 if (expect_false (ev_is_active (w)))
3416 return; 4652 return;
3417 4653
3418 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
… …
3423 4659
3424 EV_FREQUENT_CHECK; 4660 EV_FREQUENT_CHECK;
3425} 4661}
3426 4662
3427void 4663void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4664ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3429{ 4665{
3430 clear_pending (EV_A_ (W)w); 4666 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4667 if (expect_false (!ev_is_active (w)))
3432 return; 4668 return;
3433 4669
… …
3446} 4682}
3447#endif 4683#endif
3448 4684
3449#if EV_CHECK_ENABLE 4685#if EV_CHECK_ENABLE
3450void 4686void
3451ev_check_start (EV_P_ ev_check *w) 4687ev_check_start (EV_P_ ev_check *w) EV_THROW
3452{ 4688{
3453 if (expect_false (ev_is_active (w))) 4689 if (expect_false (ev_is_active (w)))
3454 return; 4690 return;
3455 4691
3456 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
… …
3461 4697
3462 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
3463} 4699}
3464 4700
3465void 4701void
3466ev_check_stop (EV_P_ ev_check *w) 4702ev_check_stop (EV_P_ ev_check *w) EV_THROW
3467{ 4703{
3468 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4705 if (expect_false (!ev_is_active (w)))
3470 return; 4706 return;
3471 4707
… …
3483 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
3484} 4720}
3485#endif 4721#endif
3486 4722
3487#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
3488void noinline 4724noinline
4725void
3489ev_embed_sweep (EV_P_ ev_embed *w) 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3490{ 4727{
3491 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
3492} 4729}
3493 4730
3494static void 4731static void
… …
3542 ev_idle_stop (EV_A_ idle); 4779 ev_idle_stop (EV_A_ idle);
3543} 4780}
3544#endif 4781#endif
3545 4782
3546void 4783void
3547ev_embed_start (EV_P_ ev_embed *w) 4784ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3548{ 4785{
3549 if (expect_false (ev_is_active (w))) 4786 if (expect_false (ev_is_active (w)))
3550 return; 4787 return;
3551 4788
3552 { 4789 {
… …
3573 4810
3574 EV_FREQUENT_CHECK; 4811 EV_FREQUENT_CHECK;
3575} 4812}
3576 4813
3577void 4814void
3578ev_embed_stop (EV_P_ ev_embed *w) 4815ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3579{ 4816{
3580 clear_pending (EV_A_ (W)w); 4817 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4818 if (expect_false (!ev_is_active (w)))
3582 return; 4819 return;
3583 4820
… …
3593} 4830}
3594#endif 4831#endif
3595 4832
3596#if EV_FORK_ENABLE 4833#if EV_FORK_ENABLE
3597void 4834void
3598ev_fork_start (EV_P_ ev_fork *w) 4835ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3599{ 4836{
3600 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
3601 return; 4838 return;
3602 4839
3603 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
… …
3608 4845
3609 EV_FREQUENT_CHECK; 4846 EV_FREQUENT_CHECK;
3610} 4847}
3611 4848
3612void 4849void
3613ev_fork_stop (EV_P_ ev_fork *w) 4850ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3614{ 4851{
3615 clear_pending (EV_A_ (W)w); 4852 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4853 if (expect_false (!ev_is_active (w)))
3617 return; 4854 return;
3618 4855
… …
3631} 4868}
3632#endif 4869#endif
3633 4870
3634#if EV_CLEANUP_ENABLE 4871#if EV_CLEANUP_ENABLE
3635void 4872void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4873ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3637{ 4874{
3638 if (expect_false (ev_is_active (w))) 4875 if (expect_false (ev_is_active (w)))
3639 return; 4876 return;
3640 4877
3641 EV_FREQUENT_CHECK; 4878 EV_FREQUENT_CHECK;
… …
3648 ev_unref (EV_A); 4885 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
3650} 4887}
3651 4888
3652void 4889void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4890ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3654{ 4891{
3655 clear_pending (EV_A_ (W)w); 4892 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4893 if (expect_false (!ev_is_active (w)))
3657 return; 4894 return;
3658 4895
… …
3672} 4909}
3673#endif 4910#endif
3674 4911
3675#if EV_ASYNC_ENABLE 4912#if EV_ASYNC_ENABLE
3676void 4913void
3677ev_async_start (EV_P_ ev_async *w) 4914ev_async_start (EV_P_ ev_async *w) EV_THROW
3678{ 4915{
3679 if (expect_false (ev_is_active (w))) 4916 if (expect_false (ev_is_active (w)))
3680 return; 4917 return;
3681 4918
3682 w->sent = 0; 4919 w->sent = 0;
… …
3691 4928
3692 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
3693} 4930}
3694 4931
3695void 4932void
3696ev_async_stop (EV_P_ ev_async *w) 4933ev_async_stop (EV_P_ ev_async *w) EV_THROW
3697{ 4934{
3698 clear_pending (EV_A_ (W)w); 4935 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4936 if (expect_false (!ev_is_active (w)))
3700 return; 4937 return;
3701 4938
… …
3712 4949
3713 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
3714} 4951}
3715 4952
3716void 4953void
3717ev_async_send (EV_P_ ev_async *w) 4954ev_async_send (EV_P_ ev_async *w) EV_THROW
3718{ 4955{
3719 w->sent = 1; 4956 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 4957 evpipe_write (EV_A_ &async_pending);
3721} 4958}
3722#endif 4959#endif
… …
3759 4996
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4997 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3761} 4998}
3762 4999
3763void 5000void
3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5001ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3765{ 5002{
3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5003 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3767 5004
3768 if (expect_false (!once)) 5005 if (expect_false (!once))
3769 { 5006 {
… …
3790} 5027}
3791 5028
3792/*****************************************************************************/ 5029/*****************************************************************************/
3793 5030
3794#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
5032ecb_cold
3795void 5033void
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3797{ 5035{
3798 int i, j; 5036 int i, j;
3799 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
3800 5038
3801 if (types & (EV_IO | EV_EMBED)) 5039 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5082 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 5083#endif
3846 5084
3847#if EV_IDLE_ENABLE 5085#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 5086 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 5087 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 5088 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 5089 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 5090#endif
3853 5091
3854#if EV_FORK_ENABLE 5092#if EV_FORK_ENABLE
… …
3907 5145
3908#if EV_MULTIPLICITY 5146#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 5147 #include "ev_wrap.h"
3910#endif 5148#endif
3911 5149
3912EV_CPP(})
3913

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