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Comparing libev/ev.c (file contents):
Revision 1.465 by root, Tue Mar 25 17:44:13 2014 UTC vs.
Revision 1.536 by root, Wed Aug 10 16:50:05 2022 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 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 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#pragma clang diagnostic ignored "-Wunused-value"
41#pragma clang diagnostic ignored "-Wcomment"
42#pragma clang diagnostic ignored "-Wextern-initializer"
43
40/* this big block deduces configuration from config.h */ 44/* this big block deduces configuration from config.h */
41#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
42# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
43# include EV_CONFIG_H 47# include EV_CONFIG_H
44# else 48# else
45# include "config.h" 49# include "config.h"
46# endif 50# endif
47 51
48#if HAVE_FLOOR 52# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 53# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 54# define EV_USE_FLOOR 1
55# endif
51# endif 56# endif
52#endif
53 57
54# if HAVE_CLOCK_SYSCALL 58# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 59# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 60# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 61# ifndef EV_USE_REALTIME
… …
115# else 119# else
116# undef EV_USE_EPOLL 120# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 121# define EV_USE_EPOLL 0
118# endif 122# endif
119 123
124# if HAVE_LINUX_AIO_ABI_H
125# ifndef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
127# endif
128# else
129# undef EV_USE_LINUXAIO
130# define EV_USE_LINUXAIO 0
131# endif
132
133# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
134# ifndef EV_USE_IOURING
135# define EV_USE_IOURING EV_FEATURE_BACKENDS
136# endif
137# else
138# undef EV_USE_IOURING
139# define EV_USE_IOURING 0
140# endif
141
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 142# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 143# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 144# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 145# endif
124# else 146# else
… …
159# endif 181# endif
160# else 182# else
161# undef EV_USE_EVENTFD 183# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 184# define EV_USE_EVENTFD 0
163# endif 185# endif
164 186
187# if HAVE_SYS_TIMERFD_H
188# ifndef EV_USE_TIMERFD
189# define EV_USE_TIMERFD EV_FEATURE_OS
190# endif
191# else
192# undef EV_USE_TIMERFD
193# define EV_USE_TIMERFD 0
165#endif 194# endif
195
196#endif
197
198/* OS X, in its infinite idiocy, actually HARDCODES
199 * a limit of 1024 into their select. Where people have brains,
200 * OS X engineers apparently have a vacuum. Or maybe they were
201 * ordered to have a vacuum, or they do anything for money.
202 * This might help. Or not.
203 * Note that this must be defined early, as other include files
204 * will rely on this define as well.
205 */
206#define _DARWIN_UNLIMITED_SELECT 1
166 207
167#include <stdlib.h> 208#include <stdlib.h>
168#include <string.h> 209#include <string.h>
169#include <fcntl.h> 210#include <fcntl.h>
170#include <stddef.h> 211#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 249# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 250# define EV_SELECT_IS_WINSOCKET 1
210# endif 251# endif
211# undef EV_AVOID_STDIO 252# undef EV_AVOID_STDIO
212#endif 253#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 254
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 255/* this block tries to deduce configuration from header-defined symbols and defaults */
223 256
224/* try to deduce the maximum number of signals on this platform */ 257/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 258#if defined EV_NSIG
… …
256# else 289# else
257# define EV_USE_CLOCK_SYSCALL 0 290# define EV_USE_CLOCK_SYSCALL 0
258# endif 291# endif
259#endif 292#endif
260 293
294#if !(_POSIX_TIMERS > 0)
295# ifndef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 0
297# endif
298# ifndef EV_USE_REALTIME
299# define EV_USE_REALTIME 0
300# endif
301#endif
302
261#ifndef EV_USE_MONOTONIC 303#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 304# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
263# define EV_USE_MONOTONIC EV_FEATURE_OS 305# define EV_USE_MONOTONIC EV_FEATURE_OS
264# else 306# else
265# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
… …
304 346
305#ifndef EV_USE_PORT 347#ifndef EV_USE_PORT
306# define EV_USE_PORT 0 348# define EV_USE_PORT 0
307#endif 349#endif
308 350
351#ifndef EV_USE_LINUXAIO
352# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
353# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
354# else
355# define EV_USE_LINUXAIO 0
356# endif
357#endif
358
359#ifndef EV_USE_IOURING
360# if __linux /* later checks might disable again */
361# define EV_USE_IOURING 1
362# else
363# define EV_USE_IOURING 0
364# endif
365#endif
366
309#ifndef EV_USE_INOTIFY 367#ifndef EV_USE_INOTIFY
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 368# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
311# define EV_USE_INOTIFY EV_FEATURE_OS 369# define EV_USE_INOTIFY EV_FEATURE_OS
312# else 370# else
313# define EV_USE_INOTIFY 0 371# define EV_USE_INOTIFY 0
… …
336# else 394# else
337# define EV_USE_SIGNALFD 0 395# define EV_USE_SIGNALFD 0
338# endif 396# endif
339#endif 397#endif
340 398
399#ifndef EV_USE_TIMERFD
400# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
401# define EV_USE_TIMERFD EV_FEATURE_OS
402# else
403# define EV_USE_TIMERFD 0
404# endif
405#endif
406
341#if 0 /* debugging */ 407#if 0 /* debugging */
342# define EV_VERIFY 3 408# define EV_VERIFY 3
343# define EV_USE_4HEAP 1 409# define EV_USE_4HEAP 1
344# define EV_HEAP_CACHE_AT 1 410# define EV_HEAP_CACHE_AT 1
345#endif 411#endif
… …
354 420
355#ifndef EV_HEAP_CACHE_AT 421#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 422# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 423#endif
358 424
359#ifdef ANDROID 425#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 426/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 427# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 428# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 429/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL 430# undef EV_USE_CLOCK_SYSCALL
… …
378# include <sys/syscall.h> 444# include <sys/syscall.h>
379# ifdef SYS_clock_gettime 445# ifdef SYS_clock_gettime
380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 446# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
381# undef EV_USE_MONOTONIC 447# undef EV_USE_MONOTONIC
382# define EV_USE_MONOTONIC 1 448# define EV_USE_MONOTONIC 1
449# define EV_NEED_SYSCALL 1
383# else 450# else
384# undef EV_USE_CLOCK_SYSCALL 451# undef EV_USE_CLOCK_SYSCALL
385# define EV_USE_CLOCK_SYSCALL 0 452# define EV_USE_CLOCK_SYSCALL 0
386# endif 453# endif
387#endif 454#endif
… …
401#if !EV_STAT_ENABLE 468#if !EV_STAT_ENABLE
402# undef EV_USE_INOTIFY 469# undef EV_USE_INOTIFY
403# define EV_USE_INOTIFY 0 470# define EV_USE_INOTIFY 0
404#endif 471#endif
405 472
473#if __linux && EV_USE_IOURING
474# include <linux/version.h>
475# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
476# undef EV_USE_IOURING
477# define EV_USE_IOURING 0
478# endif
479#endif
480
406#if !EV_USE_NANOSLEEP 481#if !EV_USE_NANOSLEEP
407/* hp-ux has it in sys/time.h, which we unconditionally include above */ 482/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux 483# if !defined _WIN32 && !defined __hpux
409# include <sys/select.h> 484# include <sys/select.h>
485# endif
486#endif
487
488#if EV_USE_LINUXAIO
489# include <sys/syscall.h>
490# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
491# define EV_NEED_SYSCALL 1
492# else
493# undef EV_USE_LINUXAIO
494# define EV_USE_LINUXAIO 0
495# endif
496#endif
497
498#if EV_USE_IOURING
499# include <sys/syscall.h>
500# if !SYS_io_uring_register && __linux && !__alpha
501# define SYS_io_uring_setup 425
502# define SYS_io_uring_enter 426
503# define SYS_io_uring_register 427
504# endif
505# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
506# define EV_NEED_SYSCALL 1
507# else
508# undef EV_USE_IOURING
509# define EV_USE_IOURING 0
410# endif 510# endif
411#endif 511#endif
412 512
413#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
414# include <sys/statfs.h> 514# include <sys/statfs.h>
… …
419# define EV_USE_INOTIFY 0 519# define EV_USE_INOTIFY 0
420# endif 520# endif
421#endif 521#endif
422 522
423#if EV_USE_EVENTFD 523#if EV_USE_EVENTFD
424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 524/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
425# include <stdint.h> 525# include <stdint.h>
426# ifndef EFD_NONBLOCK 526# ifndef EFD_NONBLOCK
427# define EFD_NONBLOCK O_NONBLOCK 527# define EFD_NONBLOCK O_NONBLOCK
428# endif 528# endif
429# ifndef EFD_CLOEXEC 529# ifndef EFD_CLOEXEC
… …
435# endif 535# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 536EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif 537#endif
438 538
439#if EV_USE_SIGNALFD 539#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 540/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
441# include <stdint.h> 541# include <stdint.h>
442# ifndef SFD_NONBLOCK 542# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK 543# define SFD_NONBLOCK O_NONBLOCK
444# endif 544# endif
445# ifndef SFD_CLOEXEC 545# ifndef SFD_CLOEXEC
… …
447# define SFD_CLOEXEC O_CLOEXEC 547# define SFD_CLOEXEC O_CLOEXEC
448# else 548# else
449# define SFD_CLOEXEC 02000000 549# define SFD_CLOEXEC 02000000
450# endif 550# endif
451# endif 551# endif
452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 552EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
453 553
454struct signalfd_siginfo 554struct signalfd_siginfo
455{ 555{
456 uint32_t ssi_signo; 556 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)]; 557 char pad[128 - sizeof (uint32_t)];
458}; 558};
459#endif 559#endif
460 560
461/**/ 561/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
562#if EV_USE_TIMERFD
563# include <sys/timerfd.h>
564/* timerfd is only used for periodics */
565# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
566# undef EV_USE_TIMERFD
567# define EV_USE_TIMERFD 0
568# endif
569#endif
570
571/*****************************************************************************/
462 572
463#if EV_VERIFY >= 3 573#if EV_VERIFY >= 3
464# define EV_FREQUENT_CHECK ev_verify (EV_A) 574# define EV_FREQUENT_CHECK ev_verify (EV_A)
465#else 575#else
466# define EV_FREQUENT_CHECK do { } while (0) 576# define EV_FREQUENT_CHECK do { } while (0)
… …
471 * This value is good at least till the year 4000. 581 * This value is good at least till the year 4000.
472 */ 582 */
473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 583#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 584/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
475 585
476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 586#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 587#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
588#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
478 589
590/* find a portable timestamp that is "always" in the future but fits into time_t.
591 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
592 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
593#define EV_TSTAMP_HUGE \
594 (sizeof (time_t) >= 8 ? 10000000000000. \
595 : 0 < (time_t)4294967295 ? 4294967295. \
596 : 2147483647.) \
597
598#ifndef EV_TS_CONST
599# define EV_TS_CONST(nv) nv
600# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
601# define EV_TS_FROM_USEC(us) us * 1e-6
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 602# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 603# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
604# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
605# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
606#endif
481 607
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 608/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */ 609/* ECB.H BEGIN */
484/* 610/*
485 * libecb - http://software.schmorp.de/pkg/libecb 611 * libecb - http://software.schmorp.de/pkg/libecb
486 * 612 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 613 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 614 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 615 * All rights reserved.
490 * 616 *
491 * Redistribution and use in source and binary forms, with or without modifica- 617 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met: 618 * tion, are permitted provided that the following conditions are met:
… …
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 632 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 633 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 634 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 635 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE. 636 * OF THE POSSIBILITY OF SUCH DAMAGE.
637 *
638 * Alternatively, the contents of this file may be used under the terms of
639 * the GNU General Public License ("GPL") version 2 or any later version,
640 * in which case the provisions of the GPL are applicable instead of
641 * the above. If you wish to allow the use of your version of this file
642 * only under the terms of the GPL and not to allow others to use your
643 * version of this file under the BSD license, indicate your decision
644 * by deleting the provisions above and replace them with the notice
645 * and other provisions required by the GPL. If you do not delete the
646 * provisions above, a recipient may use your version of this file under
647 * either the BSD or the GPL.
511 */ 648 */
512 649
513#ifndef ECB_H 650#ifndef ECB_H
514#define ECB_H 651#define ECB_H
515 652
516/* 16 bits major, 16 bits minor */ 653/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003 654#define ECB_VERSION 0x00010008
518 655
519#ifdef _WIN32 656#include <string.h> /* for memcpy */
657
658#if defined (_WIN32) && !defined (__MINGW32__)
520 typedef signed char int8_t; 659 typedef signed char int8_t;
521 typedef unsigned char uint8_t; 660 typedef unsigned char uint8_t;
661 typedef signed char int_fast8_t;
662 typedef unsigned char uint_fast8_t;
522 typedef signed short int16_t; 663 typedef signed short int16_t;
523 typedef unsigned short uint16_t; 664 typedef unsigned short uint16_t;
665 typedef signed int int_fast16_t;
666 typedef unsigned int uint_fast16_t;
524 typedef signed int int32_t; 667 typedef signed int int32_t;
525 typedef unsigned int uint32_t; 668 typedef unsigned int uint32_t;
669 typedef signed int int_fast32_t;
670 typedef unsigned int uint_fast32_t;
526 #if __GNUC__ 671 #if __GNUC__
527 typedef signed long long int64_t; 672 typedef signed long long int64_t;
528 typedef unsigned long long uint64_t; 673 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */ 674 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t; 675 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t; 676 typedef unsigned __int64 uint64_t;
532 #endif 677 #endif
678 typedef int64_t int_fast64_t;
679 typedef uint64_t uint_fast64_t;
533 #ifdef _WIN64 680 #ifdef _WIN64
534 #define ECB_PTRSIZE 8 681 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t; 682 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t; 683 typedef int64_t intptr_t;
537 #else 684 #else
… …
539 typedef uint32_t uintptr_t; 686 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t; 687 typedef int32_t intptr_t;
541 #endif 688 #endif
542#else 689#else
543 #include <inttypes.h> 690 #include <inttypes.h>
544 #if UINTMAX_MAX > 0xffffffffU 691 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
545 #define ECB_PTRSIZE 8 692 #define ECB_PTRSIZE 8
546 #else 693 #else
547 #define ECB_PTRSIZE 4 694 #define ECB_PTRSIZE 4
548 #endif 695 #endif
549#endif 696#endif
550 697
698#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
699#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
700
701#ifndef ECB_OPTIMIZE_SIZE
702 #if __OPTIMIZE_SIZE__
703 #define ECB_OPTIMIZE_SIZE 1
704 #else
705 #define ECB_OPTIMIZE_SIZE 0
706 #endif
707#endif
708
551/* work around x32 idiocy by defining proper macros */ 709/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 710#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
553 #if _ILP32 711 #if _ILP32
554 #define ECB_AMD64_X32 1 712 #define ECB_AMD64_X32 1
555 #else 713 #else
556 #define ECB_AMD64 1 714 #define ECB_AMD64 1
557 #endif 715 #endif
… …
562 * causing enormous grief in return for some better fake benchmark numbers. 720 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so. 721 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have 722 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place. 723 * an issue with that they should have done it right in the first place.
566 */ 724 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 725#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0 726 #define ECB_GCC_VERSION(major,minor) 0
570 #else 727#else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 728 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif 729#endif
730
731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
732
733#if __clang__ && defined __has_builtin
734 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
735#else
736 #define ECB_CLANG_BUILTIN(x) 0
737#endif
738
739#if __clang__ && defined __has_extension
740 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
741#else
742 #define ECB_CLANG_EXTENSION(x) 0
573#endif 743#endif
574 744
575#define ECB_CPP (__cplusplus+0) 745#define ECB_CPP (__cplusplus+0)
576#define ECB_CPP11 (__cplusplus >= 201103L) 746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
577 749
578#if ECB_CPP 750#if ECB_CPP
579 #define ECB_C 0 751 #define ECB_C 0
580 #define ECB_STDC_VERSION 0 752 #define ECB_STDC_VERSION 0
581#else 753#else
… …
583 #define ECB_STDC_VERSION __STDC_VERSION__ 755 #define ECB_STDC_VERSION __STDC_VERSION__
584#endif 756#endif
585 757
586#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
587#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
588 761
589#if ECB_CPP 762#if ECB_CPP
590 #define ECB_EXTERN_C extern "C" 763 #define ECB_EXTERN_C extern "C"
591 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
592 #define ECB_EXTERN_C_END } 765 #define ECB_EXTERN_C_END }
… …
607 780
608#if ECB_NO_SMP 781#if ECB_NO_SMP
609 #define ECB_MEMORY_FENCE do { } while (0) 782 #define ECB_MEMORY_FENCE do { } while (0)
610#endif 783#endif
611 784
785/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
786#if __xlC__ && ECB_CPP
787 #include <builtins.h>
788#endif
789
790#if 1400 <= _MSC_VER
791 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
792#endif
793
612#ifndef ECB_MEMORY_FENCE 794#ifndef ECB_MEMORY_FENCE
613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 795 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
796 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
614 #if __i386 || __i386__ 797 #if __i386 || __i386__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 801 #elif ECB_GCC_AMD64
619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
620 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 806 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
807 #elif defined __ARM_ARCH_2__ \
808 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
809 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
810 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
811 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
812 || defined __ARM_ARCH_5TEJ__
813 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 817 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
630 #elif __aarch64__ 821 #elif __aarch64__
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
632 #elif (__sparc || __sparc__) && !__sparcv8 823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
634 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
635 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
636 #elif defined __s390__ || defined __s390x__ 827 #elif defined __s390__ || defined __s390x__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
660 #if ECB_GCC_VERSION(4,7) 851 #if ECB_GCC_VERSION(4,7)
661 /* see comment below (stdatomic.h) about the C11 memory model. */ 852 /* see comment below (stdatomic.h) about the C11 memory model. */
662 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
663 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
664 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
665 857
666 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 858 #elif ECB_CLANG_EXTENSION(c_atomic)
667 * without risking compile time errors with other compilers. We *could*
668 * define our own ecb_clang_has_feature, but I just can't be bothered to work
669 * around this shit time and again.
670 * #elif defined __clang && __has_feature (cxx_atomic)
671 * // see comment below (stdatomic.h) about the C11 memory model. 859 /* see comment below (stdatomic.h) about the C11 memory model. */
672 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
673 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
674 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
675 */ 863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
676 864
677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
678 #define ECB_MEMORY_FENCE __sync_synchronize () 866 #define ECB_MEMORY_FENCE __sync_synchronize ()
679 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
680 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
690 #elif defined _WIN32 878 #elif defined _WIN32
691 #include <WinNT.h> 879 #include <WinNT.h>
692 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
693 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
694 #include <mbarrier.h> 882 #include <mbarrier.h>
695 #define ECB_MEMORY_FENCE __machine_rw_barrier () 883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
696 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
697 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 885 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
886 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
698 #elif __xlC__ 887 #elif __xlC__
699 #define ECB_MEMORY_FENCE __sync () 888 #define ECB_MEMORY_FENCE __sync ()
700 #endif 889 #endif
701#endif 890#endif
702 891
703#ifndef ECB_MEMORY_FENCE 892#ifndef ECB_MEMORY_FENCE
704 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
705 /* we assume that these memory fences work on all variables/all memory accesses, */ 894 /* we assume that these memory fences work on all variables/all memory accesses, */
706 /* not just C11 atomics and atomic accesses */ 895 /* not just C11 atomics and atomic accesses */
707 #include <stdatomic.h> 896 #include <stdatomic.h>
708 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
709 /* any fence other than seq_cst, which isn't very efficient for us. */
710 /* Why that is, we don't know - either the C11 memory model is quite useless */
711 /* for most usages, or gcc and clang have a bug */
712 /* I *currently* lean towards the latter, and inefficiently implement */
713 /* all three of ecb's fences as a seq_cst fence */
714 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
715 /* for all __atomic_thread_fence's except seq_cst */
716 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 897 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
898 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
899 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
717 #endif 900 #endif
718#endif 901#endif
719 902
720#ifndef ECB_MEMORY_FENCE 903#ifndef ECB_MEMORY_FENCE
721 #if !ECB_AVOID_PTHREADS 904 #if !ECB_AVOID_PTHREADS
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741 924
742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
744#endif 927#endif
745 928
929#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
930 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
931#endif
932
746/*****************************************************************************/ 933/*****************************************************************************/
747 934
748#if __cplusplus 935#if ECB_CPP
749 #define ecb_inline static inline 936 #define ecb_inline static inline
750#elif ECB_GCC_VERSION(2,5) 937#elif ECB_GCC_VERSION(2,5)
751 #define ecb_inline static __inline__ 938 #define ecb_inline static __inline__
752#elif ECB_C99 939#elif ECB_C99
753 #define ecb_inline static inline 940 #define ecb_inline static inline
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767 954
768#define ECB_CONCAT_(a, b) a ## b 955#define ECB_CONCAT_(a, b) a ## b
769#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
770#define ECB_STRINGIFY_(a) # a 957#define ECB_STRINGIFY_(a) # a
771#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 958#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
959#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
772 960
773#define ecb_function_ ecb_inline 961#define ecb_function_ ecb_inline
774 962
775#if ECB_GCC_VERSION(3,1) 963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
776 #define ecb_attribute(attrlist) __attribute__(attrlist) 964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
780#else 965#else
781 #define ecb_attribute(attrlist) 966 #define ecb_attribute(attrlist)
967#endif
782 968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
783 /* possible C11 impl for integral types 972 /* possible C11 impl for integral types
784 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
785 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
786 975
787 #define ecb_is_constant(expr) 0 976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
788 #define ecb_expect(expr,value) (expr) 982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
987#else
789 #define ecb_prefetch(addr,rw,locality) 988 #define ecb_prefetch(addr,rw,locality)
790#endif 989#endif
791 990
792/* no emulation for ecb_decltype */ 991/* no emulation for ecb_decltype */
793#if ECB_GCC_VERSION(4,5) 992#if ECB_CPP11
993 // older implementations might have problems with decltype(x)::type, work around it
994 template<class T> struct ecb_decltype_t { typedef T type; };
794 #define ecb_decltype(x) __decltype(x) 995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
795#elif ECB_GCC_VERSION(3,0) 996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
796 #define ecb_decltype(x) __typeof(x) 997 #define ecb_decltype(x) __typeof__ (x)
797#endif 998#endif
798 999
1000#if _MSC_VER >= 1300
1001 #define ecb_deprecated __declspec (deprecated)
1002#else
1003 #define ecb_deprecated ecb_attribute ((__deprecated__))
1004#endif
1005
1006#if _MSC_VER >= 1500
1007 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1008#elif ECB_GCC_VERSION(4,5)
1009 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1010#else
1011 #define ecb_deprecated_message(msg) ecb_deprecated
1012#endif
1013
1014#if _MSC_VER >= 1400
1015 #define ecb_noinline __declspec (noinline)
1016#else
799#define ecb_noinline ecb_attribute ((__noinline__)) 1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
800#define ecb_unused ecb_attribute ((__unused__)) 1020#define ecb_unused ecb_attribute ((__unused__))
801#define ecb_const ecb_attribute ((__const__)) 1021#define ecb_const ecb_attribute ((__const__))
802#define ecb_pure ecb_attribute ((__pure__)) 1022#define ecb_pure ecb_attribute ((__pure__))
803 1023
804#if ECB_C11 1024#if ECB_C11 || __IBMC_NORETURN
1025 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
805 #define ecb_noreturn _Noreturn 1026 #define ecb_noreturn _Noreturn
1027#elif ECB_CPP11
1028 #define ecb_noreturn [[noreturn]]
1029#elif _MSC_VER >= 1200
1030 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1031 #define ecb_noreturn __declspec (noreturn)
806#else 1032#else
807 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
808#endif 1034#endif
809 1035
810#if ECB_GCC_VERSION(4,3) 1036#if ECB_GCC_VERSION(4,3)
… …
825/* for compatibility to the rest of the world */ 1051/* for compatibility to the rest of the world */
826#define ecb_likely(expr) ecb_expect_true (expr) 1052#define ecb_likely(expr) ecb_expect_true (expr)
827#define ecb_unlikely(expr) ecb_expect_false (expr) 1053#define ecb_unlikely(expr) ecb_expect_false (expr)
828 1054
829/* count trailing zero bits and count # of one bits */ 1055/* count trailing zero bits and count # of one bits */
830#if ECB_GCC_VERSION(3,4) 1056#if ECB_GCC_VERSION(3,4) \
1057 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1058 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1059 && ECB_CLANG_BUILTIN(__builtin_popcount))
831 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1060 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
832 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
833 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
834 #define ecb_ctz32(x) __builtin_ctz (x) 1063 #define ecb_ctz32(x) __builtin_ctz (x)
835 #define ecb_ctz64(x) __builtin_ctzll (x) 1064 #define ecb_ctz64(x) __builtin_ctzll (x)
836 #define ecb_popcount32(x) __builtin_popcount (x) 1065 #define ecb_popcount32(x) __builtin_popcount (x)
837 /* no popcountll */ 1066 /* no popcountll */
838#else 1067#else
839 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
840 ecb_function_ int 1069 ecb_function_ ecb_const int
841 ecb_ctz32 (uint32_t x) 1070 ecb_ctz32 (uint32_t x)
842 { 1071 {
1072#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1073 unsigned long r;
1074 _BitScanForward (&r, x);
1075 return (int)r;
1076#else
843 int r = 0; 1077 int r = 0;
844 1078
845 x &= ~x + 1; /* this isolates the lowest bit */ 1079 x &= ~x + 1; /* this isolates the lowest bit */
846 1080
847#if ECB_branchless_on_i386 1081#if ECB_branchless_on_i386
… …
857 if (x & 0xff00ff00) r += 8; 1091 if (x & 0xff00ff00) r += 8;
858 if (x & 0xffff0000) r += 16; 1092 if (x & 0xffff0000) r += 16;
859#endif 1093#endif
860 1094
861 return r; 1095 return r;
1096#endif
862 } 1097 }
863 1098
864 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
865 ecb_function_ int 1100 ecb_function_ ecb_const int
866 ecb_ctz64 (uint64_t x) 1101 ecb_ctz64 (uint64_t x)
867 { 1102 {
1103#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1104 unsigned long r;
1105 _BitScanForward64 (&r, x);
1106 return (int)r;
1107#else
868 int shift = x & 0xffffffffU ? 0 : 32; 1108 int shift = x & 0xffffffff ? 0 : 32;
869 return ecb_ctz32 (x >> shift) + shift; 1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
870 } 1111 }
871 1112
872 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
873 ecb_function_ int 1114 ecb_function_ ecb_const int
874 ecb_popcount32 (uint32_t x) 1115 ecb_popcount32 (uint32_t x)
875 { 1116 {
876 x -= (x >> 1) & 0x55555555; 1117 x -= (x >> 1) & 0x55555555;
877 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
878 x = ((x >> 4) + x) & 0x0f0f0f0f; 1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
879 x *= 0x01010101; 1120 x *= 0x01010101;
880 1121
881 return x >> 24; 1122 return x >> 24;
882 } 1123 }
883 1124
884 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
885 ecb_function_ int ecb_ld32 (uint32_t x) 1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
886 { 1127 {
1128#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1129 unsigned long r;
1130 _BitScanReverse (&r, x);
1131 return (int)r;
1132#else
887 int r = 0; 1133 int r = 0;
888 1134
889 if (x >> 16) { x >>= 16; r += 16; } 1135 if (x >> 16) { x >>= 16; r += 16; }
890 if (x >> 8) { x >>= 8; r += 8; } 1136 if (x >> 8) { x >>= 8; r += 8; }
891 if (x >> 4) { x >>= 4; r += 4; } 1137 if (x >> 4) { x >>= 4; r += 4; }
892 if (x >> 2) { x >>= 2; r += 2; } 1138 if (x >> 2) { x >>= 2; r += 2; }
893 if (x >> 1) { r += 1; } 1139 if (x >> 1) { r += 1; }
894 1140
895 return r; 1141 return r;
1142#endif
896 } 1143 }
897 1144
898 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
899 ecb_function_ int ecb_ld64 (uint64_t x) 1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
900 { 1147 {
1148#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1149 unsigned long r;
1150 _BitScanReverse64 (&r, x);
1151 return (int)r;
1152#else
901 int r = 0; 1153 int r = 0;
902 1154
903 if (x >> 32) { x >>= 32; r += 32; } 1155 if (x >> 32) { x >>= 32; r += 32; }
904 1156
905 return r + ecb_ld32 (x); 1157 return r + ecb_ld32 (x);
1158#endif
906 } 1159 }
907#endif 1160#endif
908 1161
909ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
910ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1163ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
911ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
912ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1165ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
913 1166
914ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
915ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
916{ 1169{
917 return ( (x * 0x0802U & 0x22110U) 1170 return ( (x * 0x0802U & 0x22110U)
918 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
919} 1172}
920 1173
921ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
922ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
923{ 1176{
924 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
925 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
926 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
927 x = ( x >> 8 ) | ( x << 8); 1180 x = ( x >> 8 ) | ( x << 8);
928 1181
929 return x; 1182 return x;
930} 1183}
931 1184
932ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
933ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
934{ 1187{
935 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
936 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
937 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
938 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
941 return x; 1194 return x;
942} 1195}
943 1196
944/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
945/* so for this version we are lazy */ 1198/* so for this version we are lazy */
946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
947ecb_function_ int 1200ecb_function_ ecb_const int
948ecb_popcount64 (uint64_t x) 1201ecb_popcount64 (uint64_t x)
949{ 1202{
950 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
951} 1204}
952 1205
953ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
954ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
955ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
956ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
957ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1210ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
958ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1211ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
959ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1212ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
960ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1213ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
961 1214
962ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1215ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
963ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1216ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
964ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1217ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
965ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1218ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
966ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1219ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
967ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1220ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
968ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1221ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
969ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1222ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
970 1223
971#if ECB_GCC_VERSION(4,3) 1224#if ECB_CPP
1225
1226inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1227inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1228inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1229inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1230
1231inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1232inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1233inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1234inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1235
1236inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1237inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1238inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1239inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1240
1241inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1242inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1243inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1244inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1245
1246inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1247inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1248inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1249
1250inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1251inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1252inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1253inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1254
1255inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1256inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1257inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1258inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1259
1260#endif
1261
1262#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1263 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1264 #define ecb_bswap16(x) __builtin_bswap16 (x)
1265 #else
972 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
973 #define ecb_bswap32(x) __builtin_bswap32 (x) 1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
974 #define ecb_bswap64(x) __builtin_bswap64 (x) 1269 #define ecb_bswap64(x) __builtin_bswap64 (x)
1270#elif _MSC_VER
1271 #include <stdlib.h>
1272 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1273 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1274 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
975#else 1275#else
976 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
977 ecb_function_ uint16_t 1277 ecb_function_ ecb_const uint16_t
978 ecb_bswap16 (uint16_t x) 1278 ecb_bswap16 (uint16_t x)
979 { 1279 {
980 return ecb_rotl16 (x, 8); 1280 return ecb_rotl16 (x, 8);
981 } 1281 }
982 1282
983 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
984 ecb_function_ uint32_t 1284 ecb_function_ ecb_const uint32_t
985 ecb_bswap32 (uint32_t x) 1285 ecb_bswap32 (uint32_t x)
986 { 1286 {
987 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
988 } 1288 }
989 1289
990 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
991 ecb_function_ uint64_t 1291 ecb_function_ ecb_const uint64_t
992 ecb_bswap64 (uint64_t x) 1292 ecb_bswap64 (uint64_t x)
993 { 1293 {
994 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
995 } 1295 }
996#endif 1296#endif
997 1297
998#if ECB_GCC_VERSION(4,5) 1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
999 #define ecb_unreachable() __builtin_unreachable () 1299 #define ecb_unreachable() __builtin_unreachable ()
1000#else 1300#else
1001 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1301 /* this seems to work fine, but gcc always emits a warning for it :/ */
1002 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
1003 ecb_inline void ecb_unreachable (void) { } 1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1004#endif 1304#endif
1005 1305
1006/* try to tell the compiler that some condition is definitely true */ 1306/* try to tell the compiler that some condition is definitely true */
1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1008 1308
1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1010ecb_inline unsigned char 1310ecb_inline ecb_const uint32_t
1011ecb_byteorder_helper (void) 1311ecb_byteorder_helper (void)
1012{ 1312{
1013 /* the union code still generates code under pressure in gcc, */ 1313 /* the union code still generates code under pressure in gcc, */
1014 /* but less than using pointers, and always seems to */ 1314 /* but less than using pointers, and always seems to */
1015 /* successfully return a constant. */ 1315 /* successfully return a constant. */
1016 /* the reason why we have this horrible preprocessor mess */ 1316 /* the reason why we have this horrible preprocessor mess */
1017 /* is to avoid it in all cases, at least on common architectures */ 1317 /* is to avoid it in all cases, at least on common architectures */
1018 /* or when using a recent enough gcc version (>= 4.6) */ 1318 /* or when using a recent enough gcc version (>= 4.6) */
1019#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1020 return 0x44;
1021#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1319#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1320 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1321 #define ECB_LITTLE_ENDIAN 1
1022 return 0x44; 1322 return 0x44332211;
1023#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1323#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1324 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1325 #define ECB_BIG_ENDIAN 1
1024 return 0x11; 1326 return 0x11223344;
1025#else 1327#else
1026 union 1328 union
1027 { 1329 {
1330 uint8_t c[4];
1028 uint32_t i; 1331 uint32_t u;
1029 uint8_t c;
1030 } u = { 0x11223344 }; 1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1031 return u.c; 1333 return u.u;
1032#endif 1334#endif
1033} 1335}
1034 1336
1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1036ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1338ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1038ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1340ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1341
1342/*****************************************************************************/
1343/* unaligned load/store */
1344
1345ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1350ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1351ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1354ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1355ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1356
1357ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1362ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1363ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1364
1365ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1370ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1371ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1372
1373ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1374ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1375ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1376
1377ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1378ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1379ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1380
1381ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1382ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1383ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1384
1385#if ECB_CPP
1386
1387inline uint8_t ecb_bswap (uint8_t v) { return v; }
1388inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1389inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1390inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1391
1392template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1393template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1394template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1395template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1396template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1397template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1398template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1399template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1400
1401template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1402template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1403template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1404template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1405template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1406template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1407template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1408template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1409
1410#endif
1411
1412/*****************************************************************************/
1039 1413
1040#if ECB_GCC_VERSION(3,0) || ECB_C99 1414#if ECB_GCC_VERSION(3,0) || ECB_C99
1041 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1415 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1042#else 1416#else
1043 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1417 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1044#endif 1418#endif
1045 1419
1046#if __cplusplus 1420#if ECB_CPP
1047 template<typename T> 1421 template<typename T>
1048 static inline T ecb_div_rd (T val, T div) 1422 static inline T ecb_div_rd (T val, T div)
1049 { 1423 {
1050 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1051 } 1425 }
… …
1068 } 1442 }
1069#else 1443#else
1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1071#endif 1445#endif
1072 1446
1447/*****************************************************************************/
1448
1449ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1450ecb_function_ ecb_const uint32_t
1451ecb_binary16_to_binary32 (uint32_t x)
1452{
1453 unsigned int s = (x & 0x8000) << (31 - 15);
1454 int e = (x >> 10) & 0x001f;
1455 unsigned int m = x & 0x03ff;
1456
1457 if (ecb_expect_false (e == 31))
1458 /* infinity or NaN */
1459 e = 255 - (127 - 15);
1460 else if (ecb_expect_false (!e))
1461 {
1462 if (ecb_expect_true (!m))
1463 /* zero, handled by code below by forcing e to 0 */
1464 e = 0 - (127 - 15);
1465 else
1466 {
1467 /* subnormal, renormalise */
1468 unsigned int s = 10 - ecb_ld32 (m);
1469
1470 m = (m << s) & 0x3ff; /* mask implicit bit */
1471 e -= s - 1;
1472 }
1473 }
1474
1475 /* e and m now are normalised, or zero, (or inf or nan) */
1476 e += 127 - 15;
1477
1478 return s | (e << 23) | (m << (23 - 10));
1479}
1480
1481ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1482ecb_function_ ecb_const uint16_t
1483ecb_binary32_to_binary16 (uint32_t x)
1484{
1485 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1486 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1487 unsigned int m = x & 0x007fffff;
1488
1489 x &= 0x7fffffff;
1490
1491 /* if it's within range of binary16 normals, use fast path */
1492 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1493 {
1494 /* mantissa round-to-even */
1495 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1496
1497 /* handle overflow */
1498 if (ecb_expect_false (m >= 0x00800000))
1499 {
1500 m >>= 1;
1501 e += 1;
1502 }
1503
1504 return s | (e << 10) | (m >> (23 - 10));
1505 }
1506
1507 /* handle large numbers and infinity */
1508 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1509 return s | 0x7c00;
1510
1511 /* handle zero, subnormals and small numbers */
1512 if (ecb_expect_true (x < 0x38800000))
1513 {
1514 /* zero */
1515 if (ecb_expect_true (!x))
1516 return s;
1517
1518 /* handle subnormals */
1519
1520 /* too small, will be zero */
1521 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1522 return s;
1523
1524 m |= 0x00800000; /* make implicit bit explicit */
1525
1526 /* very tricky - we need to round to the nearest e (+10) bit value */
1527 {
1528 unsigned int bits = 14 - e;
1529 unsigned int half = (1 << (bits - 1)) - 1;
1530 unsigned int even = (m >> bits) & 1;
1531
1532 /* if this overflows, we will end up with a normalised number */
1533 m = (m + half + even) >> bits;
1534 }
1535
1536 return s | m;
1537 }
1538
1539 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1540 m >>= 13;
1541
1542 return s | 0x7c00 | m | !m;
1543}
1544
1073/*******************************************************************************/ 1545/*******************************************************************************/
1074/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1075 1547
1076/* basically, everything uses "ieee pure-endian" floating point numbers */ 1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1077/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1078#if 0 \ 1550#if 0 \
1079 || __i386 || __i386__ \ 1551 || __i386 || __i386__ \
1080 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1552 || ECB_GCC_AMD64 \
1081 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1082 || defined __s390__ || defined __s390x__ \ 1554 || defined __s390__ || defined __s390x__ \
1083 || defined __mips__ \ 1555 || defined __mips__ \
1084 || defined __alpha__ \ 1556 || defined __alpha__ \
1085 || defined __hppa__ \ 1557 || defined __hppa__ \
1086 || defined __ia64__ \ 1558 || defined __ia64__ \
1087 || defined __m68k__ \ 1559 || defined __m68k__ \
1088 || defined __m88k__ \ 1560 || defined __m88k__ \
1089 || defined __sh__ \ 1561 || defined __sh__ \
1090 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1091 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1092 | defined __aarch64__ 1564 || defined __aarch64__
1093 #define ECB_STDFP 1 1565 #define ECB_STDFP 1
1094 #include <string.h> /* for memcpy */
1095#else 1566#else
1096 #define ECB_STDFP 0 1567 #define ECB_STDFP 0
1097#endif 1568#endif
1098 1569
1099#ifndef ECB_NO_LIBM 1570#ifndef ECB_NO_LIBM
… …
1111 #define ECB_NAN NAN 1582 #define ECB_NAN NAN
1112 #else 1583 #else
1113 #define ECB_NAN ECB_INFINITY 1584 #define ECB_NAN ECB_INFINITY
1114 #endif 1585 #endif
1115 1586
1116 /* converts an ieee half/binary16 to a float */ 1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1117 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1118 ecb_function_ float 1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1119 ecb_binary16_to_float (uint16_t x) 1590 #else
1120 { 1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1121 int e = (x >> 10) & 0x1f; 1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1122 int m = x & 0x3ff; 1593 #endif
1123 float r;
1124
1125 if (!e ) r = ldexpf (m , -24);
1126 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1127 else if (m ) r = ECB_NAN;
1128 else r = ECB_INFINITY;
1129
1130 return x & 0x8000 ? -r : r;
1131 }
1132 1594
1133 /* convert a float to ieee single/binary32 */ 1595 /* convert a float to ieee single/binary32 */
1134 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1596 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1135 ecb_function_ uint32_t 1597 ecb_function_ ecb_const uint32_t
1136 ecb_float_to_binary32 (float x) 1598 ecb_float_to_binary32 (float x)
1137 { 1599 {
1138 uint32_t r; 1600 uint32_t r;
1139 1601
1140 #if ECB_STDFP 1602 #if ECB_STDFP
… …
1147 if (x == 0e0f ) return 0x00000000U; 1609 if (x == 0e0f ) return 0x00000000U;
1148 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1149 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1150 if (x != x ) return 0x7fbfffffU; 1612 if (x != x ) return 0x7fbfffffU;
1151 1613
1152 m = frexpf (x, &e) * 0x1000000U; 1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1153 1615
1154 r = m & 0x80000000U; 1616 r = m & 0x80000000U;
1155 1617
1156 if (r) 1618 if (r)
1157 m = -m; 1619 m = -m;
… …
1169 1631
1170 return r; 1632 return r;
1171 } 1633 }
1172 1634
1173 /* converts an ieee single/binary32 to a float */ 1635 /* converts an ieee single/binary32 to a float */
1174 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1636 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1175 ecb_function_ float 1637 ecb_function_ ecb_const float
1176 ecb_binary32_to_float (uint32_t x) 1638 ecb_binary32_to_float (uint32_t x)
1177 { 1639 {
1178 float r; 1640 float r;
1179 1641
1180 #if ECB_STDFP 1642 #if ECB_STDFP
… …
1190 x |= 0x800000U; 1652 x |= 0x800000U;
1191 else 1653 else
1192 e = 1; 1654 e = 1;
1193 1655
1194 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1656 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1195 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1196 1658
1197 r = neg ? -r : r; 1659 r = neg ? -r : r;
1198 #endif 1660 #endif
1199 1661
1200 return r; 1662 return r;
1201 } 1663 }
1202 1664
1203 /* convert a double to ieee double/binary64 */ 1665 /* convert a double to ieee double/binary64 */
1204 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1666 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1205 ecb_function_ uint64_t 1667 ecb_function_ ecb_const uint64_t
1206 ecb_double_to_binary64 (double x) 1668 ecb_double_to_binary64 (double x)
1207 { 1669 {
1208 uint64_t r; 1670 uint64_t r;
1209 1671
1210 #if ECB_STDFP 1672 #if ECB_STDFP
… …
1239 1701
1240 return r; 1702 return r;
1241 } 1703 }
1242 1704
1243 /* converts an ieee double/binary64 to a double */ 1705 /* converts an ieee double/binary64 to a double */
1244 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1706 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1245 ecb_function_ double 1707 ecb_function_ ecb_const double
1246 ecb_binary64_to_double (uint64_t x) 1708 ecb_binary64_to_double (uint64_t x)
1247 { 1709 {
1248 double r; 1710 double r;
1249 1711
1250 #if ECB_STDFP 1712 #if ECB_STDFP
… …
1268 #endif 1730 #endif
1269 1731
1270 return r; 1732 return r;
1271 } 1733 }
1272 1734
1735 /* convert a float to ieee half/binary16 */
1736 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1737 ecb_function_ ecb_const uint16_t
1738 ecb_float_to_binary16 (float x)
1739 {
1740 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1741 }
1742
1743 /* convert an ieee half/binary16 to float */
1744 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1745 ecb_function_ ecb_const float
1746 ecb_binary16_to_float (uint16_t x)
1747 {
1748 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1749 }
1750
1273#endif 1751#endif
1274 1752
1275#endif 1753#endif
1276 1754
1277/* ECB.H END */ 1755/* ECB.H END */
1278 1756
1279#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1280/* if your architecture doesn't need memory fences, e.g. because it is 1758/* if your architecture doesn't need memory fences, e.g. because it is
1281 * single-cpu/core, or if you use libev in a project that doesn't use libev 1759 * single-cpu/core, or if you use libev in a project that doesn't use libev
1282 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1760 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1283 * libev, in which cases the memory fences become nops. 1761 * libev, in which cases the memory fences become nops.
1284 * alternatively, you can remove this #error and link against libpthread, 1762 * alternatively, you can remove this #error and link against libpthread,
1285 * which will then provide the memory fences. 1763 * which will then provide the memory fences.
1286 */ 1764 */
1287# error "memory fences not defined for your architecture, please report" 1765# error "memory fences not defined for your architecture, please report"
… …
1291# define ECB_MEMORY_FENCE do { } while (0) 1769# define ECB_MEMORY_FENCE do { } while (0)
1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1294#endif 1772#endif
1295 1773
1296#define expect_false(cond) ecb_expect_false (cond)
1297#define expect_true(cond) ecb_expect_true (cond)
1298#define noinline ecb_noinline
1299
1300#define inline_size ecb_inline 1774#define inline_size ecb_inline
1301 1775
1302#if EV_FEATURE_CODE 1776#if EV_FEATURE_CODE
1303# define inline_speed ecb_inline 1777# define inline_speed ecb_inline
1304#else 1778#else
1305# define inline_speed static noinline 1779# define inline_speed ecb_noinline static
1306#endif 1780#endif
1781
1782/*****************************************************************************/
1783/* raw syscall wrappers */
1784
1785#if EV_NEED_SYSCALL
1786
1787#include <sys/syscall.h>
1788
1789/*
1790 * define some syscall wrappers for common architectures
1791 * this is mostly for nice looks during debugging, not performance.
1792 * our syscalls return < 0, not == -1, on error. which is good
1793 * enough for linux aio.
1794 * TODO: arm is also common nowadays, maybe even mips and x86
1795 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1796 */
1797#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1798 /* the costly errno access probably kills this for size optimisation */
1799
1800 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1801 ({ \
1802 long res; \
1803 register unsigned long r6 __asm__ ("r9" ); \
1804 register unsigned long r5 __asm__ ("r8" ); \
1805 register unsigned long r4 __asm__ ("r10"); \
1806 register unsigned long r3 __asm__ ("rdx"); \
1807 register unsigned long r2 __asm__ ("rsi"); \
1808 register unsigned long r1 __asm__ ("rdi"); \
1809 if (narg >= 6) r6 = (unsigned long)(arg6); \
1810 if (narg >= 5) r5 = (unsigned long)(arg5); \
1811 if (narg >= 4) r4 = (unsigned long)(arg4); \
1812 if (narg >= 3) r3 = (unsigned long)(arg3); \
1813 if (narg >= 2) r2 = (unsigned long)(arg2); \
1814 if (narg >= 1) r1 = (unsigned long)(arg1); \
1815 __asm__ __volatile__ ( \
1816 "syscall\n\t" \
1817 : "=a" (res) \
1818 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1819 : "cc", "r11", "cx", "memory"); \
1820 errno = -res; \
1821 res; \
1822 })
1823
1824#endif
1825
1826#ifdef ev_syscall
1827 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1828 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1829 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1830 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1831 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1832 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1833 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1834#else
1835 #define ev_syscall0(nr) syscall (nr)
1836 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1837 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1838 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1839 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1840 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1841 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1842#endif
1843
1844#endif
1845
1846/*****************************************************************************/
1307 1847
1308#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1309 1849
1310#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
1311# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
1312#else 1852#else
1313# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1314#endif 1854#endif
1315 1855
1316#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
1317#define EMPTY2(a,b) /* used to suppress some warnings */
1318 1857
1319typedef ev_watcher *W; 1858typedef ev_watcher *W;
1320typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
1321typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
1322 1861
… …
1347# include "ev_win32.c" 1886# include "ev_win32.c"
1348#endif 1887#endif
1349 1888
1350/*****************************************************************************/ 1889/*****************************************************************************/
1351 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1352/* define a suitable floor function (only used by periodics atm) */ 1895/* define a suitable floor function (only used by periodics atm) */
1353 1896
1354#if EV_USE_FLOOR 1897#if EV_USE_FLOOR
1355# include <math.h> 1898# include <math.h>
1356# define ev_floor(v) floor (v) 1899# define ev_floor(v) floor (v)
1357#else 1900#else
1358 1901
1359#include <float.h> 1902#include <float.h>
1360 1903
1361/* a floor() replacement function, should be independent of ev_tstamp type */ 1904/* a floor() replacement function, should be independent of ev_tstamp type */
1905ecb_noinline
1362static ev_tstamp noinline 1906static ev_tstamp
1363ev_floor (ev_tstamp v) 1907ev_floor (ev_tstamp v)
1364{ 1908{
1365 /* the choice of shift factor is not terribly important */ 1909 /* the choice of shift factor is not terribly important */
1366#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1367 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1368#else 1912#else
1369 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1370#endif 1914#endif
1371 1915
1916 /* special treatment for negative arguments */
1917 if (ecb_expect_false (v < 0.))
1918 {
1919 ev_tstamp f = -ev_floor (-v);
1920
1921 return f - (f == v ? 0 : 1);
1922 }
1923
1372 /* argument too large for an unsigned long? */ 1924 /* argument too large for an unsigned long? then reduce it */
1373 if (expect_false (v >= shift)) 1925 if (ecb_expect_false (v >= shift))
1374 { 1926 {
1375 ev_tstamp f; 1927 ev_tstamp f;
1376 1928
1377 if (v == v - 1.) 1929 if (v == v - 1.)
1378 return v; /* very large number */ 1930 return v; /* very large numbers are assumed to be integer */
1379 1931
1380 f = shift * ev_floor (v * (1. / shift)); 1932 f = shift * ev_floor (v * (1. / shift));
1381 return f + ev_floor (v - f); 1933 return f + ev_floor (v - f);
1382 } 1934 }
1383 1935
1384 /* special treatment for negative args? */
1385 if (expect_false (v < 0.))
1386 {
1387 ev_tstamp f = -ev_floor (-v);
1388
1389 return f - (f == v ? 0 : 1);
1390 }
1391
1392 /* fits into an unsigned long */ 1936 /* fits into an unsigned long */
1393 return (unsigned long)v; 1937 return (unsigned long)v;
1394} 1938}
1395 1939
1396#endif 1940#endif
… …
1399 1943
1400#ifdef __linux 1944#ifdef __linux
1401# include <sys/utsname.h> 1945# include <sys/utsname.h>
1402#endif 1946#endif
1403 1947
1404static unsigned int noinline ecb_cold 1948ecb_noinline ecb_cold
1949static unsigned int
1405ev_linux_version (void) 1950ev_linux_version (void)
1406{ 1951{
1407#ifdef __linux 1952#ifdef __linux
1408 unsigned int v = 0; 1953 unsigned int v = 0;
1409 struct utsname buf; 1954 struct utsname buf;
… …
1438} 1983}
1439 1984
1440/*****************************************************************************/ 1985/*****************************************************************************/
1441 1986
1442#if EV_AVOID_STDIO 1987#if EV_AVOID_STDIO
1443static void noinline ecb_cold 1988ecb_noinline ecb_cold
1989static void
1444ev_printerr (const char *msg) 1990ev_printerr (const char *msg)
1445{ 1991{
1446 write (STDERR_FILENO, msg, strlen (msg)); 1992 write (STDERR_FILENO, msg, strlen (msg));
1447} 1993}
1448#endif 1994#endif
1449 1995
1450static void (*syserr_cb)(const char *msg) EV_THROW; 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1451 1997
1452void ecb_cold 1998ecb_cold
1999void
1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 2000ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1454{ 2001{
1455 syserr_cb = cb; 2002 syserr_cb = cb;
1456} 2003}
1457 2004
1458static void noinline ecb_cold 2005ecb_noinline ecb_cold
2006static void
1459ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
1460{ 2008{
1461 if (!msg) 2009 if (!msg)
1462 msg = "(libev) system error"; 2010 msg = "(libev) system error";
1463 2011
… …
1476 abort (); 2024 abort ();
1477 } 2025 }
1478} 2026}
1479 2027
1480static void * 2028static void *
1481ev_realloc_emul (void *ptr, long size) EV_THROW 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1482{ 2030{
1483 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
1484 * implement realloc (x, 0) (as required by both ansi c-89 and 2032 * implement realloc (x, 0) (as required by both ansi c-89 and
1485 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
1486 * recently, also (at least) fedora and debian started breaking it, 2034 * recently, also (at least) fedora and debian started breaking it,
… …
1492 2040
1493 free (ptr); 2041 free (ptr);
1494 return 0; 2042 return 0;
1495} 2043}
1496 2044
1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1498 2046
1499void ecb_cold 2047ecb_cold
2048void
1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 2049ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1501{ 2050{
1502 alloc = cb; 2051 alloc = cb;
1503} 2052}
1504 2053
1505inline_speed void * 2054inline_speed void *
… …
1532typedef struct 2081typedef struct
1533{ 2082{
1534 WL head; 2083 WL head;
1535 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
1536 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2085 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1537 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2086 unsigned char emask; /* some backends store the actual kernel mask in here */
1538 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
1539#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
1540 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
1541#endif 2090#endif
1542#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1543 SOCKET handle; 2092 SOCKET handle;
… …
1597 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
1598 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1599 2148
1600#else 2149#else
1601 2150
1602 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2151 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1603 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
1604 #include "ev_vars.h" 2153 #include "ev_vars.h"
1605 #undef VAR 2154 #undef VAR
1606 2155
1607 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
1608 2157
1609#endif 2158#endif
1610 2159
1611#if EV_FEATURE_API 2160#if EV_FEATURE_API
1612# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2161# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1613# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2162# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1614# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
1615#else 2164#else
1616# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
1617# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
1618# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1622 2171
1623/*****************************************************************************/ 2172/*****************************************************************************/
1624 2173
1625#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
1626ev_tstamp 2175ev_tstamp
1627ev_time (void) EV_THROW 2176ev_time (void) EV_NOEXCEPT
1628{ 2177{
1629#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
1630 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
1631 { 2180 {
1632 struct timespec ts; 2181 struct timespec ts;
1633 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
1634 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
1635 } 2184 }
1636#endif 2185#endif
1637 2186
2187 {
1638 struct timeval tv; 2188 struct timeval tv;
1639 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
1640 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
1641} 2192}
1642#endif 2193#endif
1643 2194
1644inline_size ev_tstamp 2195inline_size ev_tstamp
1645get_clock (void) 2196get_clock (void)
1646{ 2197{
1647#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
1648 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
1649 { 2200 {
1650 struct timespec ts; 2201 struct timespec ts;
1651 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
1652 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
1653 } 2204 }
1654#endif 2205#endif
1655 2206
1656 return ev_time (); 2207 return ev_time ();
1657} 2208}
1658 2209
1659#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
1660ev_tstamp 2211ev_tstamp
1661ev_now (EV_P) EV_THROW 2212ev_now (EV_P) EV_NOEXCEPT
1662{ 2213{
1663 return ev_rt_now; 2214 return ev_rt_now;
1664} 2215}
1665#endif 2216#endif
1666 2217
1667void 2218void
1668ev_sleep (ev_tstamp delay) EV_THROW 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1669{ 2220{
1670 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
1671 { 2222 {
1672#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
1673 struct timespec ts; 2224 struct timespec ts;
1674 2225
1675 EV_TS_SET (ts, delay); 2226 EV_TS_SET (ts, delay);
1676 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
1677#elif defined _WIN32 2228#elif defined _WIN32
2229 /* maybe this should round up, as ms is very low resolution */
2230 /* compared to select (µs) or nanosleep (ns) */
1678 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1679#else 2232#else
1680 struct timeval tv; 2233 struct timeval tv;
1681 2234
1682 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2235 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1683 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1713 } 2266 }
1714 2267
1715 return ncur; 2268 return ncur;
1716} 2269}
1717 2270
1718static void * noinline ecb_cold 2271ecb_noinline ecb_cold
2272static void *
1719array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
1720{ 2274{
1721 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
1722 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
1723} 2277}
1724 2278
2279#define array_needsize_noinit(base,offset,count)
2280
1725#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
1726 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1727 2283
1728#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
1729 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
1730 { \ 2286 { \
1731 int ecb_unused ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
1732 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
1733 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
1734 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
1735 } 2291 }
1736 2292
1737#if 0 2293#if 0
1738#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
1739 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1748 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1749 2305
1750/*****************************************************************************/ 2306/*****************************************************************************/
1751 2307
1752/* dummy callback for pending events */ 2308/* dummy callback for pending events */
1753static void noinline 2309ecb_noinline
2310static void
1754pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
1755{ 2312{
1756} 2313}
1757 2314
1758void noinline 2315ecb_noinline
2316void
1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1760{ 2318{
1761 W w_ = (W)w; 2319 W w_ = (W)w;
1762 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
1763 2321
1764 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
1765 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
1766 else 2324 else
1767 { 2325 {
1768 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1770 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
1771 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
1772 } 2330 }
1773 2331
1774 pendingpri = NUMPRI - 1; 2332 pendingpri = NUMPRI - 1;
1775} 2333}
1776 2334
1777inline_speed void 2335inline_speed void
1778feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
1779{ 2337{
1780 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1781 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
1782} 2340}
1783 2341
1784inline_size void 2342inline_size void
1785feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
1820inline_speed void 2378inline_speed void
1821fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
1822{ 2380{
1823 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
1824 2382
1825 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
1826 fd_event_nocheck (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
1827} 2385}
1828 2386
1829void 2387void
1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1831{ 2389{
1832 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
1833 fd_event_nocheck (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
1834} 2392}
1835 2393
… …
1838inline_size void 2396inline_size void
1839fd_reify (EV_P) 2397fd_reify (EV_P)
1840{ 2398{
1841 int i; 2399 int i;
1842 2400
2401 /* most backends do not modify the fdchanges list in backend_modfiy.
2402 * except io_uring, which has fixed-size buffers which might force us
2403 * to handle events in backend_modify, causing fdchanges to be amended,
2404 * which could result in an endless loop.
2405 * to avoid this, we do not dynamically handle fds that were added
2406 * during fd_reify. that means that for those backends, fdchangecnt
2407 * might be non-zero during poll, which must cause them to not block.
2408 * to not put too much of a burden on other backends, this detail
2409 * needs to be handled in the backend.
2410 */
2411 int changecnt = fdchangecnt;
2412
1843#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1844 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
1845 { 2415 {
1846 int fd = fdchanges [i]; 2416 int fd = fdchanges [i];
1847 ANFD *anfd = anfds + fd; 2417 ANFD *anfd = anfds + fd;
1848 2418
1849 if (anfd->reify & EV__IOFDSET && anfd->head) 2419 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1863 } 2433 }
1864 } 2434 }
1865 } 2435 }
1866#endif 2436#endif
1867 2437
1868 for (i = 0; i < fdchangecnt; ++i) 2438 for (i = 0; i < changecnt; ++i)
1869 { 2439 {
1870 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
1871 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
1872 ev_io *w; 2442 ev_io *w;
1873 2443
1874 unsigned char o_events = anfd->events; 2444 unsigned char o_events = anfd->events;
1875 unsigned char o_reify = anfd->reify; 2445 unsigned char o_reify = anfd->reify;
1876 2446
1877 anfd->reify = 0; 2447 anfd->reify = 0;
1878 2448
1879 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1880 { 2450 {
1881 anfd->events = 0; 2451 anfd->events = 0;
1882 2452
1883 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1884 anfd->events |= (unsigned char)w->events; 2454 anfd->events |= (unsigned char)w->events;
… …
1889 2459
1890 if (o_reify & EV__IOFDSET) 2460 if (o_reify & EV__IOFDSET)
1891 backend_modify (EV_A_ fd, o_events, anfd->events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
1892 } 2462 }
1893 2463
2464 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2465 * this is a rare case (see beginning comment in this function), so we copy them to the
2466 * front and hope the backend handles this case.
2467 */
2468 if (ecb_expect_false (fdchangecnt != changecnt))
2469 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2470
1894 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
1895} 2472}
1896 2473
1897/* something about the given fd changed */ 2474/* something about the given fd changed */
1898inline_size void 2475inline_size
2476void
1899fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
1900{ 2478{
1901 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
1902 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
1903 2481
1904 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
1905 { 2483 {
1906 ++fdchangecnt; 2484 ++fdchangecnt;
1907 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1908 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
1909 } 2487 }
1910} 2488}
1911 2489
1912/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1913inline_speed void ecb_cold 2491inline_speed ecb_cold void
1914fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
1915{ 2493{
1916 ev_io *w; 2494 ev_io *w;
1917 2495
1918 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
1921 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1922 } 2500 }
1923} 2501}
1924 2502
1925/* check whether the given fd is actually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
1926inline_size int ecb_cold 2504inline_size ecb_cold int
1927fd_valid (int fd) 2505fd_valid (int fd)
1928{ 2506{
1929#ifdef _WIN32 2507#ifdef _WIN32
1930 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1931#else 2509#else
1932 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
1933#endif 2511#endif
1934} 2512}
1935 2513
1936/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
1937static void noinline ecb_cold 2515ecb_noinline ecb_cold
2516static void
1938fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
1939{ 2518{
1940 int fd; 2519 int fd;
1941 2520
1942 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
1944 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
1945 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
1946} 2525}
1947 2526
1948/* called on ENOMEM in select/poll to kill some fds and retry */ 2527/* called on ENOMEM in select/poll to kill some fds and retry */
1949static void noinline ecb_cold 2528ecb_noinline ecb_cold
2529static void
1950fd_enomem (EV_P) 2530fd_enomem (EV_P)
1951{ 2531{
1952 int fd; 2532 int fd;
1953 2533
1954 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
1958 break; 2538 break;
1959 } 2539 }
1960} 2540}
1961 2541
1962/* usually called after fork if backend needs to re-arm all fds from scratch */ 2542/* usually called after fork if backend needs to re-arm all fds from scratch */
1963static void noinline 2543ecb_noinline
2544static void
1964fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1965{ 2546{
1966 int fd; 2547 int fd;
1967 2548
1968 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
2021 ev_tstamp minat; 2602 ev_tstamp minat;
2022 ANHE *minpos; 2603 ANHE *minpos;
2023 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2024 2605
2025 /* find minimum child */ 2606 /* find minimum child */
2026 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
2027 { 2608 {
2028 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2029 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2610 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2030 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2611 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2031 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2612 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2032 } 2613 }
2033 else if (pos < E) 2614 else if (pos < E)
2034 { 2615 {
2035 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2036 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2617 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2037 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2618 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2038 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2619 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2039 } 2620 }
2040 else 2621 else
2041 break; 2622 break;
2042 2623
2043 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
2051 2632
2052 heap [k] = he; 2633 heap [k] = he;
2053 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
2054} 2635}
2055 2636
2056#else /* 4HEAP */ 2637#else /* not 4HEAP */
2057 2638
2058#define HEAP0 1 2639#define HEAP0 1
2059#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
2060#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
2061 2642
… …
2133 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
2134} 2715}
2135 2716
2136/*****************************************************************************/ 2717/*****************************************************************************/
2137 2718
2138/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
2139typedef struct 2720typedef struct
2140{ 2721{
2141 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
2142#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
2143 EV_P; 2724 EV_P;
… …
2149 2730
2150/*****************************************************************************/ 2731/*****************************************************************************/
2151 2732
2152#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2153 2734
2154static void noinline ecb_cold 2735ecb_noinline ecb_cold
2736static void
2155evpipe_init (EV_P) 2737evpipe_init (EV_P)
2156{ 2738{
2157 if (!ev_is_active (&pipe_w)) 2739 if (!ev_is_active (&pipe_w))
2158 { 2740 {
2159 int fds [2]; 2741 int fds [2];
… …
2199inline_speed void 2781inline_speed void
2200evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2201{ 2783{
2202 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2784 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2203 2785
2204 if (expect_true (*flag)) 2786 if (ecb_expect_true (*flag))
2205 return; 2787 return;
2206 2788
2207 *flag = 1; 2789 *flag = 1;
2208 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2790 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2209 2791
… …
2230#endif 2812#endif
2231 { 2813 {
2232#ifdef _WIN32 2814#ifdef _WIN32
2233 WSABUF buf; 2815 WSABUF buf;
2234 DWORD sent; 2816 DWORD sent;
2235 buf.buf = &buf; 2817 buf.buf = (char *)&buf;
2236 buf.len = 1; 2818 buf.len = 1;
2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2819 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2238#else 2820#else
2239 write (evpipe [1], &(evpipe [1]), 1); 2821 write (evpipe [1], &(evpipe [1]), 1);
2240#endif 2822#endif
… …
2286 sig_pending = 0; 2868 sig_pending = 0;
2287 2869
2288 ECB_MEMORY_FENCE; 2870 ECB_MEMORY_FENCE;
2289 2871
2290 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
2291 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
2292 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
2293 } 2875 }
2294#endif 2876#endif
2295 2877
2296#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
… …
2312} 2894}
2313 2895
2314/*****************************************************************************/ 2896/*****************************************************************************/
2315 2897
2316void 2898void
2317ev_feed_signal (int signum) EV_THROW 2899ev_feed_signal (int signum) EV_NOEXCEPT
2318{ 2900{
2319#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2320 EV_P; 2902 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE; 2903 ECB_MEMORY_FENCE_ACQUIRE;
2322 EV_A = signals [signum - 1].loop; 2904 EV_A = signals [signum - 1].loop;
… …
2337#endif 2919#endif
2338 2920
2339 ev_feed_signal (signum); 2921 ev_feed_signal (signum);
2340} 2922}
2341 2923
2342void noinline 2924ecb_noinline
2925void
2343ev_feed_signal_event (EV_P_ int signum) EV_THROW 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2344{ 2927{
2345 WL w; 2928 WL w;
2346 2929
2347 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2348 return; 2931 return;
2349 2932
2350 --signum; 2933 --signum;
2351 2934
2352#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
2353 /* it is permissible to try to feed a signal to the wrong loop */ 2936 /* it is permissible to try to feed a signal to the wrong loop */
2354 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
2355 2938
2356 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
2357 return; 2940 return;
2358#endif 2941#endif
2359 2942
2360 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE; 2944 ECB_MEMORY_FENCE_RELEASE;
… …
2445 3028
2446#endif 3029#endif
2447 3030
2448/*****************************************************************************/ 3031/*****************************************************************************/
2449 3032
3033#if EV_USE_TIMERFD
3034
3035static void periodics_reschedule (EV_P);
3036
3037static void
3038timerfdcb (EV_P_ ev_io *iow, int revents)
3039{
3040 struct itimerspec its = { 0 };
3041
3042 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3043 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3044
3045 ev_rt_now = ev_time ();
3046 /* periodics_reschedule only needs ev_rt_now */
3047 /* but maybe in the future we want the full treatment. */
3048 /*
3049 now_floor = EV_TS_CONST (0.);
3050 time_update (EV_A_ EV_TSTAMP_HUGE);
3051 */
3052#if EV_PERIODIC_ENABLE
3053 periodics_reschedule (EV_A);
3054#endif
3055}
3056
3057ecb_noinline ecb_cold
3058static void
3059evtimerfd_init (EV_P)
3060{
3061 if (!ev_is_active (&timerfd_w))
3062 {
3063 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3064
3065 if (timerfd >= 0)
3066 {
3067 fd_intern (timerfd); /* just to be sure */
3068
3069 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3070 ev_set_priority (&timerfd_w, EV_MINPRI);
3071 ev_io_start (EV_A_ &timerfd_w);
3072 ev_unref (EV_A); /* watcher should not keep loop alive */
3073
3074 /* (re-) arm timer */
3075 timerfdcb (EV_A_ 0, 0);
3076 }
3077 }
3078}
3079
3080#endif
3081
3082/*****************************************************************************/
3083
2450#if EV_USE_IOCP 3084#if EV_USE_IOCP
2451# include "ev_iocp.c" 3085# include "ev_iocp.c"
2452#endif 3086#endif
2453#if EV_USE_PORT 3087#if EV_USE_PORT
2454# include "ev_port.c" 3088# include "ev_port.c"
… …
2457# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
2458#endif 3092#endif
2459#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
2460# include "ev_epoll.c" 3094# include "ev_epoll.c"
2461#endif 3095#endif
3096#if EV_USE_LINUXAIO
3097# include "ev_linuxaio.c"
3098#endif
3099#if EV_USE_IOURING
3100# include "ev_iouring.c"
3101#endif
2462#if EV_USE_POLL 3102#if EV_USE_POLL
2463# include "ev_poll.c" 3103# include "ev_poll.c"
2464#endif 3104#endif
2465#if EV_USE_SELECT 3105#if EV_USE_SELECT
2466# include "ev_select.c" 3106# include "ev_select.c"
2467#endif 3107#endif
2468 3108
2469int ecb_cold 3109ecb_cold int
2470ev_version_major (void) EV_THROW 3110ev_version_major (void) EV_NOEXCEPT
2471{ 3111{
2472 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
2473} 3113}
2474 3114
2475int ecb_cold 3115ecb_cold int
2476ev_version_minor (void) EV_THROW 3116ev_version_minor (void) EV_NOEXCEPT
2477{ 3117{
2478 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
2479} 3119}
2480 3120
2481/* return true if we are running with elevated privileges and should ignore env variables */ 3121/* return true if we are running with elevated privileges and should ignore env variables */
2482int inline_size ecb_cold 3122inline_size ecb_cold int
2483enable_secure (void) 3123enable_secure (void)
2484{ 3124{
2485#ifdef _WIN32 3125#ifdef _WIN32
2486 return 0; 3126 return 0;
2487#else 3127#else
2488 return getuid () != geteuid () 3128 return getuid () != geteuid ()
2489 || getgid () != getegid (); 3129 || getgid () != getegid ();
2490#endif 3130#endif
2491} 3131}
2492 3132
2493unsigned int ecb_cold 3133ecb_cold
3134unsigned int
2494ev_supported_backends (void) EV_THROW 3135ev_supported_backends (void) EV_NOEXCEPT
2495{ 3136{
2496 unsigned int flags = 0; 3137 unsigned int flags = 0;
2497 3138
2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2500 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2501 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2503 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
2504 return flags; 3147 return flags;
2505} 3148}
2506 3149
2507unsigned int ecb_cold 3150ecb_cold
3151unsigned int
2508ev_recommended_backends (void) EV_THROW 3152ev_recommended_backends (void) EV_NOEXCEPT
2509{ 3153{
2510 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
2511 3155
2512#ifndef __NetBSD__ 3156#ifndef __NetBSD__
2513 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
2521#endif 3165#endif
2522#ifdef __FreeBSD__ 3166#ifdef __FreeBSD__
2523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2524#endif 3168#endif
2525 3169
3170 /* TODO: linuxaio is very experimental */
3171#if !EV_RECOMMEND_LINUXAIO
3172 flags &= ~EVBACKEND_LINUXAIO;
3173#endif
3174 /* TODO: iouring is super experimental */
3175#if !EV_RECOMMEND_IOURING
3176 flags &= ~EVBACKEND_IOURING;
3177#endif
3178
2526 return flags; 3179 return flags;
2527} 3180}
2528 3181
2529unsigned int ecb_cold 3182ecb_cold
3183unsigned int
2530ev_embeddable_backends (void) EV_THROW 3184ev_embeddable_backends (void) EV_NOEXCEPT
2531{ 3185{
2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2533 3187
2534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3188 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2535 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3189 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2536 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
2537 3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3193
2538 return flags; 3194 return flags;
2539} 3195}
2540 3196
2541unsigned int 3197unsigned int
2542ev_backend (EV_P) EV_THROW 3198ev_backend (EV_P) EV_NOEXCEPT
2543{ 3199{
2544 return backend; 3200 return backend;
2545} 3201}
2546 3202
2547#if EV_FEATURE_API 3203#if EV_FEATURE_API
2548unsigned int 3204unsigned int
2549ev_iteration (EV_P) EV_THROW 3205ev_iteration (EV_P) EV_NOEXCEPT
2550{ 3206{
2551 return loop_count; 3207 return loop_count;
2552} 3208}
2553 3209
2554unsigned int 3210unsigned int
2555ev_depth (EV_P) EV_THROW 3211ev_depth (EV_P) EV_NOEXCEPT
2556{ 3212{
2557 return loop_depth; 3213 return loop_depth;
2558} 3214}
2559 3215
2560void 3216void
2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2562{ 3218{
2563 io_blocktime = interval; 3219 io_blocktime = interval;
2564} 3220}
2565 3221
2566void 3222void
2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2568{ 3224{
2569 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
2570} 3226}
2571 3227
2572void 3228void
2573ev_set_userdata (EV_P_ void *data) EV_THROW 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2574{ 3230{
2575 userdata = data; 3231 userdata = data;
2576} 3232}
2577 3233
2578void * 3234void *
2579ev_userdata (EV_P) EV_THROW 3235ev_userdata (EV_P) EV_NOEXCEPT
2580{ 3236{
2581 return userdata; 3237 return userdata;
2582} 3238}
2583 3239
2584void 3240void
2585ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2586{ 3242{
2587 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
2588} 3244}
2589 3245
2590void 3246void
2591ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2592{ 3248{
2593 release_cb = release; 3249 release_cb = release;
2594 acquire_cb = acquire; 3250 acquire_cb = acquire;
2595} 3251}
2596#endif 3252#endif
2597 3253
2598/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
2599static void noinline ecb_cold 3255ecb_noinline ecb_cold
3256static void
2600loop_init (EV_P_ unsigned int flags) EV_THROW 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2601{ 3258{
2602 if (!backend) 3259 if (!backend)
2603 { 3260 {
2604 origflags = flags; 3261 origflags = flags;
2605 3262
… …
2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2659#endif 3316#endif
2660#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2662#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
2663 3323
2664 if (!(flags & EVBACKEND_MASK)) 3324 if (!(flags & EVBACKEND_MASK))
2665 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
2666 3326
2667#if EV_USE_IOCP 3327#if EV_USE_IOCP
2668 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2669#endif 3329#endif
2670#if EV_USE_PORT 3330#if EV_USE_PORT
2671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2672#endif 3332#endif
2673#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
2674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3335#endif
3336#if EV_USE_IOURING
3337 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3338#endif
3339#if EV_USE_LINUXAIO
3340 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2675#endif 3341#endif
2676#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
2677 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2678#endif 3344#endif
2679#if EV_USE_POLL 3345#if EV_USE_POLL
2680 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2681#endif 3347#endif
2682#if EV_USE_SELECT 3348#if EV_USE_SELECT
2683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2684#endif 3350#endif
2685 3351
2686 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
2687 3353
2688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2691#endif 3357#endif
2692 } 3358 }
2693} 3359}
2694 3360
2695/* free up a loop structure */ 3361/* free up a loop structure */
2696void ecb_cold 3362ecb_cold
3363void
2697ev_loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
2698{ 3365{
2699 int i; 3366 int i;
2700 3367
2701#if EV_MULTIPLICITY 3368#if EV_MULTIPLICITY
… …
2704 return; 3371 return;
2705#endif 3372#endif
2706 3373
2707#if EV_CLEANUP_ENABLE 3374#if EV_CLEANUP_ENABLE
2708 /* queue cleanup watchers (and execute them) */ 3375 /* queue cleanup watchers (and execute them) */
2709 if (expect_false (cleanupcnt)) 3376 if (ecb_expect_false (cleanupcnt))
2710 { 3377 {
2711 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2712 EV_INVOKE_PENDING; 3379 EV_INVOKE_PENDING;
2713 } 3380 }
2714#endif 3381#endif
… …
2733#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
2734 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
2735 close (sigfd); 3402 close (sigfd);
2736#endif 3403#endif
2737 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
2738#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
2739 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
2740 close (fs_fd); 3412 close (fs_fd);
2741#endif 3413#endif
2742 3414
2743 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
2744 close (backend_fd); 3416 close (backend_fd);
2745 3417
2746#if EV_USE_IOCP 3418#if EV_USE_IOCP
2747 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2748#endif 3420#endif
2749#if EV_USE_PORT 3421#if EV_USE_PORT
2750 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2751#endif 3423#endif
2752#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
2753 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3425 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3426#endif
3427#if EV_USE_IOURING
3428 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3429#endif
3430#if EV_USE_LINUXAIO
3431 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2754#endif 3432#endif
2755#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
2756 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2757#endif 3435#endif
2758#if EV_USE_POLL 3436#if EV_USE_POLL
2759 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2760#endif 3438#endif
2761#if EV_USE_SELECT 3439#if EV_USE_SELECT
2762 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2763#endif 3441#endif
2764 3442
2765 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
2766 { 3444 {
2767 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
2809 3487
2810inline_size void 3488inline_size void
2811loop_fork (EV_P) 3489loop_fork (EV_P)
2812{ 3490{
2813#if EV_USE_PORT 3491#if EV_USE_PORT
2814 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2815#endif 3493#endif
2816#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
2817 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3495 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3496#endif
3497#if EV_USE_IOURING
3498 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3499#endif
3500#if EV_USE_LINUXAIO
3501 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2818#endif 3502#endif
2819#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
2820 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2821#endif 3505#endif
2822#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2823 infy_fork (EV_A); 3507 infy_fork (EV_A);
2824#endif 3508#endif
2825 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3514 #endif
3515
3516 #if EV_USE_TIMERFD
3517 if (ev_is_active (&timerfd_w))
3518 {
3519 ev_ref (EV_A);
3520 ev_io_stop (EV_A_ &timerfd_w);
3521
3522 close (timerfd);
3523 timerfd = -2;
3524
3525 evtimerfd_init (EV_A);
3526 /* reschedule periodics, in case we missed something */
3527 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3528 }
3529 #endif
3530
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2827 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
2828 { 3533 {
2829 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2830 3535
2831 ev_ref (EV_A); 3536 ev_ref (EV_A);
2832 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
2833 3538
2834 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
2835 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
2836 3541
2837 evpipe_init (EV_A); 3542 evpipe_init (EV_A);
2838 /* iterate over everything, in case we missed something before */ 3543 /* iterate over everything, in case we missed something before */
2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3545 }
3546 #endif
2840 } 3547 }
2841#endif
2842 3548
2843 postfork = 0; 3549 postfork = 0;
2844} 3550}
2845 3551
2846#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2847 3553
3554ecb_cold
2848struct ev_loop * ecb_cold 3555struct ev_loop *
2849ev_loop_new (unsigned int flags) EV_THROW 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
2850{ 3557{
2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2852 3559
2853 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
2854 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
… …
2861} 3568}
2862 3569
2863#endif /* multiplicity */ 3570#endif /* multiplicity */
2864 3571
2865#if EV_VERIFY 3572#if EV_VERIFY
2866static void noinline ecb_cold 3573ecb_noinline ecb_cold
3574static void
2867verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
2868{ 3576{
2869 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3577 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2870 3578
2871 if (w->pending) 3579 if (w->pending)
2872 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3580 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2873} 3581}
2874 3582
2875static void noinline ecb_cold 3583ecb_noinline ecb_cold
3584static void
2876verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
2877{ 3586{
2878 int i; 3587 int i;
2879 3588
2880 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2885 3594
2886 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2887 } 3596 }
2888} 3597}
2889 3598
2890static void noinline ecb_cold 3599ecb_noinline ecb_cold
3600static void
2891array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
2892{ 3602{
2893 while (cnt--) 3603 while (cnt--)
2894 { 3604 {
2895 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2898} 3608}
2899#endif 3609#endif
2900 3610
2901#if EV_FEATURE_API 3611#if EV_FEATURE_API
2902void ecb_cold 3612void ecb_cold
2903ev_verify (EV_P) EV_THROW 3613ev_verify (EV_P) EV_NOEXCEPT
2904{ 3614{
2905#if EV_VERIFY 3615#if EV_VERIFY
2906 int i; 3616 int i;
2907 WL w, w2; 3617 WL w, w2;
2908 3618
… …
2984#endif 3694#endif
2985} 3695}
2986#endif 3696#endif
2987 3697
2988#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
2989struct ev_loop * ecb_cold 3700struct ev_loop *
2990#else 3701#else
2991int 3702int
2992#endif 3703#endif
2993ev_default_loop (unsigned int flags) EV_THROW 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
2994{ 3705{
2995 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
2996 { 3707 {
2997#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
2998 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3017 3728
3018 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
3019} 3730}
3020 3731
3021void 3732void
3022ev_loop_fork (EV_P) EV_THROW 3733ev_loop_fork (EV_P) EV_NOEXCEPT
3023{ 3734{
3024 postfork = 1; 3735 postfork = 1;
3025} 3736}
3026 3737
3027/*****************************************************************************/ 3738/*****************************************************************************/
… …
3031{ 3742{
3032 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
3033} 3744}
3034 3745
3035unsigned int 3746unsigned int
3036ev_pending_count (EV_P) EV_THROW 3747ev_pending_count (EV_P) EV_NOEXCEPT
3037{ 3748{
3038 int pri; 3749 int pri;
3039 unsigned int count = 0; 3750 unsigned int count = 0;
3040 3751
3041 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
3042 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
3043 3754
3044 return count; 3755 return count;
3045} 3756}
3046 3757
3047void noinline 3758ecb_noinline
3759void
3048ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
3049{ 3761{
3050 pendingpri = NUMPRI; 3762 pendingpri = NUMPRI;
3051 3763
3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3764 do
3053 { 3765 {
3054 --pendingpri; 3766 --pendingpri;
3055 3767
3768 /* pendingpri possibly gets modified in the inner loop */
3056 while (pendingcnt [pendingpri]) 3769 while (pendingcnt [pendingpri])
3057 { 3770 {
3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3059 3772
3060 p->w->pending = 0; 3773 p->w->pending = 0;
3061 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
3062 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
3063 } 3776 }
3064 } 3777 }
3778 while (pendingpri);
3065} 3779}
3066 3780
3067#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
3068/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
3069/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
3070inline_size void 3784inline_size void
3071idle_reify (EV_P) 3785idle_reify (EV_P)
3072{ 3786{
3073 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
3074 { 3788 {
3075 int pri; 3789 int pri;
3076 3790
3077 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
3078 { 3792 {
… …
3108 { 3822 {
3109 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
3110 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
3111 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
3112 3826
3113 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3827 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3114 3828
3115 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
3116 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
3117 } 3831 }
3118 else 3832 else
… …
3127 } 3841 }
3128} 3842}
3129 3843
3130#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
3131 3845
3132static void noinline 3846ecb_noinline
3847static void
3133periodic_recalc (EV_P_ ev_periodic *w) 3848periodic_recalc (EV_P_ ev_periodic *w)
3134{ 3849{
3135 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3136 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3137 3852
… …
3139 while (at <= ev_rt_now) 3854 while (at <= ev_rt_now)
3140 { 3855 {
3141 ev_tstamp nat = at + w->interval; 3856 ev_tstamp nat = at + w->interval;
3142 3857
3143 /* when resolution fails us, we use ev_rt_now */ 3858 /* when resolution fails us, we use ev_rt_now */
3144 if (expect_false (nat == at)) 3859 if (ecb_expect_false (nat == at))
3145 { 3860 {
3146 at = ev_rt_now; 3861 at = ev_rt_now;
3147 break; 3862 break;
3148 } 3863 }
3149 3864
… …
3195 } 3910 }
3196} 3911}
3197 3912
3198/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
3199/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3914/* TODO: maybe ensure that at least one event happens when jumping forward? */
3200static void noinline ecb_cold 3915ecb_noinline ecb_cold
3916static void
3201periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
3202{ 3918{
3203 int i; 3919 int i;
3204 3920
3205 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
3218 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
3219} 3935}
3220#endif 3936#endif
3221 3937
3222/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
3223static void noinline ecb_cold 3939ecb_noinline ecb_cold
3940static void
3224timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
3225{ 3942{
3226 int i; 3943 int i;
3227 3944
3228 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
3237/* also detect if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
3238inline_speed void 3955inline_speed void
3239time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
3240{ 3957{
3241#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
3242 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
3243 { 3960 {
3244 int i; 3961 int i;
3245 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
3246 3963
3247 mn_now = get_clock (); 3964 mn_now = get_clock ();
3248 3965
3249 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3250 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
3251 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3968 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3252 { 3969 {
3253 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
3254 return; 3971 return;
3255 } 3972 }
3256 3973
… …
3270 ev_tstamp diff; 3987 ev_tstamp diff;
3271 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
3272 3989
3273 diff = odiff - rtmn_diff; 3990 diff = odiff - rtmn_diff;
3274 3991
3275 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3992 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3276 return; /* all is well */ 3993 return; /* all is well */
3277 3994
3278 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
3279 mn_now = get_clock (); 3996 mn_now = get_clock ();
3280 now_floor = mn_now; 3997 now_floor = mn_now;
… …
3289 else 4006 else
3290#endif 4007#endif
3291 { 4008 {
3292 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
3293 4010
3294 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4011 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3295 { 4012 {
3296 /* adjust timers. this is easy, as the offset is the same for all of them */ 4013 /* adjust timers. this is easy, as the offset is the same for all of them */
3297 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3298#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
3299 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
3322#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
3323 ev_verify (EV_A); 4040 ev_verify (EV_A);
3324#endif 4041#endif
3325 4042
3326#ifndef _WIN32 4043#ifndef _WIN32
3327 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3328 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
3329 { 4046 {
3330 curpid = getpid (); 4047 curpid = getpid ();
3331 postfork = 1; 4048 postfork = 1;
3332 } 4049 }
3333#endif 4050#endif
3334 4051
3335#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
3336 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
3337 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
3338 if (forkcnt) 4055 if (forkcnt)
3339 { 4056 {
3340 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3341 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
3342 } 4059 }
3343#endif 4060#endif
3344 4061
3345#if EV_PREPARE_ENABLE 4062#if EV_PREPARE_ENABLE
3346 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
3347 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
3348 { 4065 {
3349 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3350 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
3351 } 4068 }
3352#endif 4069#endif
3353 4070
3354 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
3355 break; 4072 break;
3356 4073
3357 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
3358 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
3359 loop_fork (EV_A); 4076 loop_fork (EV_A);
3360 4077
3361 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
3362 fd_reify (EV_A); 4079 fd_reify (EV_A);
3363 4080
… …
3368 4085
3369 /* remember old timestamp for io_blocktime calculation */ 4086 /* remember old timestamp for io_blocktime calculation */
3370 ev_tstamp prev_mn_now = mn_now; 4087 ev_tstamp prev_mn_now = mn_now;
3371 4088
3372 /* update time to cancel out callback processing overhead */ 4089 /* update time to cancel out callback processing overhead */
3373 time_update (EV_A_ 1e100); 4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3374 4091
3375 /* from now on, we want a pipe-wake-up */ 4092 /* from now on, we want a pipe-wake-up */
3376 pipe_write_wanted = 1; 4093 pipe_write_wanted = 1;
3377 4094
3378 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3379 4096
3380 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3381 { 4098 {
3382 waittime = MAX_BLOCKTIME; 4099 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4100
4101#if EV_USE_MONOTONIC
4102 if (ecb_expect_true (have_monotonic))
4103 {
4104#if EV_USE_TIMERFD
4105 /* sleep a lot longer when we can reliably detect timejumps */
4106 if (ecb_expect_true (timerfd != -1))
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109#if !EV_PERIODIC_ENABLE
4110 /* without periodics but with monotonic clock there is no need */
4111 /* for any time jump detection, so sleep longer */
4112 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4113#endif
4114 }
4115#endif
3383 4116
3384 if (timercnt) 4117 if (timercnt)
3385 { 4118 {
3386 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3387 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
… …
3394 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
3395 } 4128 }
3396#endif 4129#endif
3397 4130
3398 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
3399 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
3400 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
3401 4134
3402 /* at this point, we NEED to wait, so we have to ensure */ 4135 /* now there are two more special cases left, either we have
3403 /* to pass a minimum nonzero value to the backend */ 4136 * already-expired timers, so we should not sleep, or we have timers
4137 * that expire very soon, in which case we need to wait for a minimum
4138 * amount of time for some event loop backends.
4139 */
3404 if (expect_false (waittime < backend_mintime)) 4140 if (ecb_expect_false (waittime < backend_mintime))
4141 waittime = waittime <= EV_TS_CONST (0.)
4142 ? EV_TS_CONST (0.)
3405 waittime = backend_mintime; 4143 : backend_mintime;
3406 4144
3407 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
3408 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
3409 { 4147 {
3410 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3411 4149
3412 if (sleeptime > waittime - backend_mintime) 4150 if (sleeptime > waittime - backend_mintime)
3413 sleeptime = waittime - backend_mintime; 4151 sleeptime = waittime - backend_mintime;
3414 4152
3415 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3416 { 4154 {
3417 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
3418 waittime -= sleeptime; 4156 waittime -= sleeptime;
3419 } 4157 }
3420 } 4158 }
… …
3434 { 4172 {
3435 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4173 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3437 } 4175 }
3438 4176
3439
3440 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
3441 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
3442 } 4179 }
3443 4180
3444 /* queue pending timers and reschedule them */ 4181 /* queue pending timers and reschedule them */
… …
3452 idle_reify (EV_A); 4189 idle_reify (EV_A);
3453#endif 4190#endif
3454 4191
3455#if EV_CHECK_ENABLE 4192#if EV_CHECK_ENABLE
3456 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
3457 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
3458 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3459#endif 4196#endif
3460 4197
3461 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
3462 } 4199 }
3463 while (expect_true ( 4200 while (ecb_expect_true (
3464 activecnt 4201 activecnt
3465 && !loop_done 4202 && !loop_done
3466 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3467 )); 4204 ));
3468 4205
… …
3475 4212
3476 return activecnt; 4213 return activecnt;
3477} 4214}
3478 4215
3479void 4216void
3480ev_break (EV_P_ int how) EV_THROW 4217ev_break (EV_P_ int how) EV_NOEXCEPT
3481{ 4218{
3482 loop_done = how; 4219 loop_done = how;
3483} 4220}
3484 4221
3485void 4222void
3486ev_ref (EV_P) EV_THROW 4223ev_ref (EV_P) EV_NOEXCEPT
3487{ 4224{
3488 ++activecnt; 4225 ++activecnt;
3489} 4226}
3490 4227
3491void 4228void
3492ev_unref (EV_P) EV_THROW 4229ev_unref (EV_P) EV_NOEXCEPT
3493{ 4230{
3494 --activecnt; 4231 --activecnt;
3495} 4232}
3496 4233
3497void 4234void
3498ev_now_update (EV_P) EV_THROW 4235ev_now_update (EV_P) EV_NOEXCEPT
3499{ 4236{
3500 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
3501} 4238}
3502 4239
3503void 4240void
3504ev_suspend (EV_P) EV_THROW 4241ev_suspend (EV_P) EV_NOEXCEPT
3505{ 4242{
3506 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3507} 4244}
3508 4245
3509void 4246void
3510ev_resume (EV_P) EV_THROW 4247ev_resume (EV_P) EV_NOEXCEPT
3511{ 4248{
3512 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
3513 4250
3514 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
3515 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3532inline_size void 4269inline_size void
3533wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
3534{ 4271{
3535 while (*head) 4272 while (*head)
3536 { 4273 {
3537 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
3538 { 4275 {
3539 *head = elem->next; 4276 *head = elem->next;
3540 break; 4277 break;
3541 } 4278 }
3542 4279
… …
3554 w->pending = 0; 4291 w->pending = 0;
3555 } 4292 }
3556} 4293}
3557 4294
3558int 4295int
3559ev_clear_pending (EV_P_ void *w) EV_THROW 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3560{ 4297{
3561 W w_ = (W)w; 4298 W w_ = (W)w;
3562 int pending = w_->pending; 4299 int pending = w_->pending;
3563 4300
3564 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
3565 { 4302 {
3566 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3567 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
3568 w_->pending = 0; 4305 w_->pending = 0;
3569 return p->events; 4306 return p->events;
… …
3596 w->active = 0; 4333 w->active = 0;
3597} 4334}
3598 4335
3599/*****************************************************************************/ 4336/*****************************************************************************/
3600 4337
3601void noinline 4338ecb_noinline
4339void
3602ev_io_start (EV_P_ ev_io *w) EV_THROW 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3603{ 4341{
3604 int fd = w->fd; 4342 int fd = w->fd;
3605 4343
3606 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
3607 return; 4345 return;
3608 4346
3609 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3610 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4348 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3611 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
3612 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3613 4354
3614 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3616 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
3617 4358
3618 /* common bug, apparently */ 4359 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4360 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620 4361
… …
3622 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
3623 4364
3624 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3625} 4366}
3626 4367
3627void noinline 4368ecb_noinline
4369void
3628ev_io_stop (EV_P_ ev_io *w) EV_THROW 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3629{ 4371{
3630 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
3632 return; 4374 return;
3633 4375
3634 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4376 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3635 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
3636 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3637 4382
3638 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
3639 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
3640 4385
3641 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3642 4387
3643 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
3644} 4389}
3645 4390
3646void noinline 4391ecb_noinline
4392void
3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3648{ 4394{
3649 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3650 return; 4396 return;
3651 4397
3652 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
3653 4399
3654 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4400 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3655 4401
3656 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
3657 4403
3658 ++timercnt; 4404 ++timercnt;
3659 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3660 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3661 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
3662 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
3663 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
3664 4410
3665 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3666 4412
3667 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4413 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3668} 4414}
3669 4415
3670void noinline 4416ecb_noinline
4417void
3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3672{ 4419{
3673 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
3674 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
3675 return; 4422 return;
3676 4423
3677 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
3678 4425
3679 { 4426 {
… …
3681 4428
3682 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4429 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3683 4430
3684 --timercnt; 4431 --timercnt;
3685 4432
3686 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
3687 { 4434 {
3688 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
3689 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
3690 } 4437 }
3691 } 4438 }
… …
3695 ev_stop (EV_A_ (W)w); 4442 ev_stop (EV_A_ (W)w);
3696 4443
3697 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3698} 4445}
3699 4446
3700void noinline 4447ecb_noinline
4448void
3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3702{ 4450{
3703 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
3704 4452
3705 clear_pending (EV_A_ (W)w); 4453 clear_pending (EV_A_ (W)w);
3706 4454
… …
3723 4471
3724 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3725} 4473}
3726 4474
3727ev_tstamp 4475ev_tstamp
3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3729{ 4477{
3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4478 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3731} 4479}
3732 4480
3733#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
3734void noinline 4482ecb_noinline
4483void
3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3736{ 4485{
3737 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
3738 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
3739 4493
3740 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
3741 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3742 else if (w->interval) 4496 else if (w->interval)
3743 { 4497 {
… …
3749 4503
3750 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
3751 4505
3752 ++periodiccnt; 4506 ++periodiccnt;
3753 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3754 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3755 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3756 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
3757 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
3758 4512
3759 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3760 4514
3761 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4515 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3762} 4516}
3763 4517
3764void noinline 4518ecb_noinline
4519void
3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3766{ 4521{
3767 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
3768 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
3769 return; 4524 return;
3770 4525
3771 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
3772 4527
3773 { 4528 {
… …
3775 4530
3776 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4531 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3777 4532
3778 --periodiccnt; 4533 --periodiccnt;
3779 4534
3780 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
3781 { 4536 {
3782 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
3783 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
3784 } 4539 }
3785 } 4540 }
… …
3787 ev_stop (EV_A_ (W)w); 4542 ev_stop (EV_A_ (W)w);
3788 4543
3789 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3790} 4545}
3791 4546
3792void noinline 4547ecb_noinline
4548void
3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3794{ 4550{
3795 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
3796 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
3797 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
3798} 4554}
… …
3802# define SA_RESTART 0 4558# define SA_RESTART 0
3803#endif 4559#endif
3804 4560
3805#if EV_SIGNAL_ENABLE 4561#if EV_SIGNAL_ENABLE
3806 4562
3807void noinline 4563ecb_noinline
4564void
3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3809{ 4566{
3810 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
3811 return; 4568 return;
3812 4569
3813 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4570 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3814 4571
3815#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
… …
3884 } 4641 }
3885 4642
3886 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3887} 4644}
3888 4645
3889void noinline 4646ecb_noinline
4647void
3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3891{ 4649{
3892 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
3893 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
3894 return; 4652 return;
3895 4653
3896 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3897 4655
3898 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3926#endif 4684#endif
3927 4685
3928#if EV_CHILD_ENABLE 4686#if EV_CHILD_ENABLE
3929 4687
3930void 4688void
3931ev_child_start (EV_P_ ev_child *w) EV_THROW 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3932{ 4690{
3933#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
3934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4692 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3935#endif 4693#endif
3936 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
3937 return; 4695 return;
3938 4696
3939 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3940 4698
3941 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
… …
3943 4701
3944 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3945} 4703}
3946 4704
3947void 4705void
3948ev_child_stop (EV_P_ ev_child *w) EV_THROW 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3949{ 4707{
3950 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
3952 return; 4710 return;
3953 4711
3954 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3955 4713
3956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3970 4728
3971#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
3972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3973#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
3974 4732
3975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4733ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3976 4734
3977#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
3978 4736
3979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4737/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3981 4739
3982static void noinline 4740ecb_noinline
4741static void
3983infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
3984{ 4743{
3985 w->wd = inotify_add_watch (fs_fd, w->path, 4744 w->wd = inotify_add_watch (fs_fd, w->path,
3986 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3987 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4051 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4052 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
4053 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4054} 4813}
4055 4814
4056static void noinline 4815ecb_noinline
4816static void
4057infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
4058{ 4818{
4059 int slot; 4819 int slot;
4060 int wd = w->wd; 4820 int wd = w->wd;
4061 4821
… …
4068 4828
4069 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
4070 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
4071} 4831}
4072 4832
4073static void noinline 4833ecb_noinline
4834static void
4074infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4075{ 4836{
4076 if (slot < 0) 4837 if (slot < 0)
4077 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
4078 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4114 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4115 ofs += sizeof (struct inotify_event) + ev->len; 4876 ofs += sizeof (struct inotify_event) + ev->len;
4116 } 4877 }
4117} 4878}
4118 4879
4119inline_size void ecb_cold 4880inline_size ecb_cold
4881void
4120ev_check_2625 (EV_P) 4882ev_check_2625 (EV_P)
4121{ 4883{
4122 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
4123 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4885 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4124 */ 4886 */
… …
4214#else 4976#else
4215# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
4216#endif 4978#endif
4217 4979
4218void 4980void
4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4220{ 4982{
4221 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
4222 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
4223 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
4224 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
4225} 4987}
4226 4988
4227static void noinline 4989ecb_noinline
4990static void
4228stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4229{ 4992{
4230 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4231 4994
4232 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
4263 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
4264 } 5027 }
4265} 5028}
4266 5029
4267void 5030void
4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4269{ 5032{
4270 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
4271 return; 5034 return;
4272 5035
4273 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
4274 5037
4275 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4294 5057
4295 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
4296} 5059}
4297 5060
4298void 5061void
4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4300{ 5063{
4301 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
4302 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
4303 return; 5066 return;
4304 5067
4305 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4306 5069
4307#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
4320} 5083}
4321#endif 5084#endif
4322 5085
4323#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
4324void 5087void
4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4326{ 5089{
4327 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
4328 return; 5091 return;
4329 5092
4330 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
4331 5094
4332 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
4335 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
4336 5099
4337 ++idleall; 5100 ++idleall;
4338 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
4339 5102
4340 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4341 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
4342 } 5105 }
4343 5106
4344 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4345} 5108}
4346 5109
4347void 5110void
4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4349{ 5112{
4350 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4351 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4352 return; 5115 return;
4353 5116
4354 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4355 5118
4356 { 5119 {
… …
4367} 5130}
4368#endif 5131#endif
4369 5132
4370#if EV_PREPARE_ENABLE 5133#if EV_PREPARE_ENABLE
4371void 5134void
4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4373{ 5136{
4374 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
4375 return; 5138 return;
4376 5139
4377 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4378 5141
4379 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
4380 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4381 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
4382 5145
4383 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
4384} 5147}
4385 5148
4386void 5149void
4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4388{ 5151{
4389 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
4390 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
4391 return; 5154 return;
4392 5155
4393 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
4394 5157
4395 { 5158 {
… …
4405} 5168}
4406#endif 5169#endif
4407 5170
4408#if EV_CHECK_ENABLE 5171#if EV_CHECK_ENABLE
4409void 5172void
4410ev_check_start (EV_P_ ev_check *w) EV_THROW 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4411{ 5174{
4412 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
4413 return; 5176 return;
4414 5177
4415 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4416 5179
4417 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
4418 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4419 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
4420 5183
4421 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
4422} 5185}
4423 5186
4424void 5187void
4425ev_check_stop (EV_P_ ev_check *w) EV_THROW 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4426{ 5189{
4427 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
4428 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
4429 return; 5192 return;
4430 5193
4431 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4432 5195
4433 { 5196 {
… …
4442 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
4443} 5206}
4444#endif 5207#endif
4445 5208
4446#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
4447void noinline 5210ecb_noinline
5211void
4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4449{ 5213{
4450 ev_run (w->other, EVRUN_NOWAIT); 5214 ev_run (w->other, EVRUN_NOWAIT);
4451} 5215}
4452 5216
4453static void 5217static void
… …
4475 ev_run (EV_A_ EVRUN_NOWAIT); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
4476 } 5240 }
4477 } 5241 }
4478} 5242}
4479 5243
5244#if EV_FORK_ENABLE
4480static void 5245static void
4481embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4482{ 5247{
4483 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5248 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4484 5249
… …
4491 ev_run (EV_A_ EVRUN_NOWAIT); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
4492 } 5257 }
4493 5258
4494 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
4495} 5260}
5261#endif
4496 5262
4497#if 0 5263#if 0
4498static void 5264static void
4499embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4500{ 5266{
4501 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
4502} 5268}
4503#endif 5269#endif
4504 5270
4505void 5271void
4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4507{ 5273{
4508 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
4509 return; 5275 return;
4510 5276
4511 { 5277 {
4512 EV_P = w->other; 5278 EV_P = w->other;
4513 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5279 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4521 5287
4522 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
4523 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
4524 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
4525 5291
5292#if EV_FORK_ENABLE
4526 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
4527 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
4528 5296
4529 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4530 5298
4531 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
4532 5300
4533 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
4534} 5302}
4535 5303
4536void 5304void
4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4538{ 5306{
4539 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
4540 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
4541 return; 5309 return;
4542 5310
4543 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
4544 5312
4545 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
4546 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
4547 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
4548 5318
4549 ev_stop (EV_A_ (W)w); 5319 ev_stop (EV_A_ (W)w);
4550 5320
4551 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
4552} 5322}
4553#endif 5323#endif
4554 5324
4555#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
4556void 5326void
4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4558{ 5328{
4559 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
4560 return; 5330 return;
4561 5331
4562 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4563 5333
4564 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
4565 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4566 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
4567 5337
4568 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
4569} 5339}
4570 5340
4571void 5341void
4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4573{ 5343{
4574 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
4575 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
4576 return; 5346 return;
4577 5347
4578 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
4579 5349
4580 { 5350 {
… …
4590} 5360}
4591#endif 5361#endif
4592 5362
4593#if EV_CLEANUP_ENABLE 5363#if EV_CLEANUP_ENABLE
4594void 5364void
4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4596{ 5366{
4597 if (expect_false (ev_is_active (w))) 5367 if (ecb_expect_false (ev_is_active (w)))
4598 return; 5368 return;
4599 5369
4600 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4601 5371
4602 ev_start (EV_A_ (W)w, ++cleanupcnt); 5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
4603 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4604 cleanups [cleanupcnt - 1] = w; 5374 cleanups [cleanupcnt - 1] = w;
4605 5375
4606 /* cleanup watchers should never keep a refcount on the loop */ 5376 /* cleanup watchers should never keep a refcount on the loop */
4607 ev_unref (EV_A); 5377 ev_unref (EV_A);
4608 EV_FREQUENT_CHECK; 5378 EV_FREQUENT_CHECK;
4609} 5379}
4610 5380
4611void 5381void
4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4613{ 5383{
4614 clear_pending (EV_A_ (W)w); 5384 clear_pending (EV_A_ (W)w);
4615 if (expect_false (!ev_is_active (w))) 5385 if (ecb_expect_false (!ev_is_active (w)))
4616 return; 5386 return;
4617 5387
4618 EV_FREQUENT_CHECK; 5388 EV_FREQUENT_CHECK;
4619 ev_ref (EV_A); 5389 ev_ref (EV_A);
4620 5390
… …
4631} 5401}
4632#endif 5402#endif
4633 5403
4634#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
4635void 5405void
4636ev_async_start (EV_P_ ev_async *w) EV_THROW 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4637{ 5407{
4638 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
4639 return; 5409 return;
4640 5410
4641 w->sent = 0; 5411 w->sent = 0;
4642 5412
4643 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
4644 5414
4645 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4646 5416
4647 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
4648 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4649 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
4650 5420
4651 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
4652} 5422}
4653 5423
4654void 5424void
4655ev_async_stop (EV_P_ ev_async *w) EV_THROW 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4656{ 5426{
4657 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
4658 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
4659 return; 5429 return;
4660 5430
4661 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
4662 5432
4663 { 5433 {
… …
4671 5441
4672 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
4673} 5443}
4674 5444
4675void 5445void
4676ev_async_send (EV_P_ ev_async *w) EV_THROW 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4677{ 5447{
4678 w->sent = 1; 5448 w->sent = 1;
4679 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
4680} 5450}
4681#endif 5451#endif
… …
4718 5488
4719 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5489 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4720} 5490}
4721 5491
4722void 5492void
4723ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5493ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4724{ 5494{
4725 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5495 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4726
4727 if (expect_false (!once))
4728 {
4729 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4730 return;
4731 }
4732 5496
4733 once->cb = cb; 5497 once->cb = cb;
4734 once->arg = arg; 5498 once->arg = arg;
4735 5499
4736 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
4749} 5513}
4750 5514
4751/*****************************************************************************/ 5515/*****************************************************************************/
4752 5516
4753#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
4754void ecb_cold 5518ecb_cold
5519void
4755ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5520ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4756{ 5521{
4757 int i, j; 5522 int i, j;
4758 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
4759 5524
4760 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))

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