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Comparing libev/ev.c (file contents):
Revision 1.462 by root, Sun Jan 5 02:59:36 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 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 (©) 2009-2013 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
573#endif
574 730
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
576#define ECB_C99 (__STDC_VERSION__ >= 199901L) 732
577#define ECB_C11 (__STDC_VERSION__ >= 201112L) 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
743#endif
744
578#define ECB_CPP (__cplusplus+0) 745#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L) 746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
749
750#if ECB_CPP
751 #define ECB_C 0
752 #define ECB_STDC_VERSION 0
753#else
754 #define ECB_C 1
755 #define ECB_STDC_VERSION __STDC_VERSION__
756#endif
757
758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
580 761
581#if ECB_CPP 762#if ECB_CPP
582 #define ECB_EXTERN_C extern "C" 763 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END } 765 #define ECB_EXTERN_C_END }
… …
599 780
600#if ECB_NO_SMP 781#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0) 782 #define ECB_MEMORY_FENCE do { } while (0)
602#endif 783#endif
603 784
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
604#ifndef ECB_MEMORY_FENCE 794#ifndef ECB_MEMORY_FENCE
605 #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")
606 #if __i386 || __i386__ 797 #if __i386 || __i386__
607 #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")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 801 #elif ECB_GCC_AMD64
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #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 */
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
618 #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")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
622 #elif (__sparc || __sparc__) && !__sparcv8 823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
623 #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")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__ 827 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
648 849
649#ifndef ECB_MEMORY_FENCE 850#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7) 851 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */ 852 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
653 857
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 858 #elif ECB_CLANG_EXTENSION(c_atomic)
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model. 859 /* see comment below (stdatomic.h) about the C11 memory model. */
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */ 861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
662 864
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize () 866 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
666 /* 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... */
… …
676 #elif defined _WIN32 878 #elif defined _WIN32
677 #include <WinNT.h> 879 #include <WinNT.h>
678 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
679 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
680 #include <mbarrier.h> 882 #include <mbarrier.h>
681 #define ECB_MEMORY_FENCE __machine_rw_barrier () 883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
682 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
683 #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 ()
684 #elif __xlC__ 887 #elif __xlC__
685 #define ECB_MEMORY_FENCE __sync () 888 #define ECB_MEMORY_FENCE __sync ()
686 #endif 889 #endif
687#endif 890#endif
688 891
689#ifndef ECB_MEMORY_FENCE 892#ifndef ECB_MEMORY_FENCE
690 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
691 /* 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, */
692 /* not just C11 atomics and atomic accesses */ 895 /* not just C11 atomics and atomic accesses */
693 #include <stdatomic.h> 896 #include <stdatomic.h>
694 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
695 /* any fence other than seq_cst, which isn't very efficient for us. */
696 /* Why that is, we don't know - either the C11 memory model is quite useless */
697 /* for most usages, or gcc and clang have a bug */
698 /* I *currently* lean towards the latter, and inefficiently implement */
699 /* all three of ecb's fences as a seq_cst fence */
700 #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)
701 #endif 900 #endif
702#endif 901#endif
703 902
704#ifndef ECB_MEMORY_FENCE 903#ifndef ECB_MEMORY_FENCE
705 #if !ECB_AVOID_PTHREADS 904 #if !ECB_AVOID_PTHREADS
… …
725 924
726#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
727 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
728#endif 927#endif
729 928
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
730/*****************************************************************************/ 933/*****************************************************************************/
731 934
732#if __cplusplus 935#if ECB_CPP
733 #define ecb_inline static inline 936 #define ecb_inline static inline
734#elif ECB_GCC_VERSION(2,5) 937#elif ECB_GCC_VERSION(2,5)
735 #define ecb_inline static __inline__ 938 #define ecb_inline static __inline__
736#elif ECB_C99 939#elif ECB_C99
737 #define ecb_inline static inline 940 #define ecb_inline static inline
… …
751 954
752#define ECB_CONCAT_(a, b) a ## b 955#define ECB_CONCAT_(a, b) a ## b
753#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
754#define ECB_STRINGIFY_(a) # a 957#define ECB_STRINGIFY_(a) # a
755#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))
756 960
757#define ecb_function_ ecb_inline 961#define ecb_function_ ecb_inline
758 962
759#if ECB_GCC_VERSION(3,1) 963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
760 #define ecb_attribute(attrlist) __attribute__(attrlist) 964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
965#else
966 #define ecb_attribute(attrlist)
967#endif
968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
761 #define ecb_is_constant(expr) __builtin_constant_p (expr) 970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
972 /* possible C11 impl for integral types
973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
975
976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
762 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
763 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
764#else 987#else
765 #define ecb_attribute(attrlist)
766 #define ecb_is_constant(expr) 0
767 #define ecb_expect(expr,value) (expr)
768 #define ecb_prefetch(addr,rw,locality) 988 #define ecb_prefetch(addr,rw,locality)
769#endif 989#endif
770 990
771/* no emulation for ecb_decltype */ 991/* no emulation for ecb_decltype */
772#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; };
773 #define ecb_decltype(x) __decltype(x) 995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
774#elif ECB_GCC_VERSION(3,0) 996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
775 #define ecb_decltype(x) __typeof(x) 997 #define ecb_decltype(x) __typeof__ (x)
776#endif 998#endif
777 999
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
778#define ecb_noinline ecb_attribute ((__noinline__)) 1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
779#define ecb_unused ecb_attribute ((__unused__)) 1020#define ecb_unused ecb_attribute ((__unused__))
780#define ecb_const ecb_attribute ((__const__)) 1021#define ecb_const ecb_attribute ((__const__))
781#define ecb_pure ecb_attribute ((__pure__)) 1022#define ecb_pure ecb_attribute ((__pure__))
782 1023
783#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 */
784 #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)
785#else 1032#else
786 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
787#endif 1034#endif
788 1035
789#if ECB_GCC_VERSION(4,3) 1036#if ECB_GCC_VERSION(4,3)
… …
804/* for compatibility to the rest of the world */ 1051/* for compatibility to the rest of the world */
805#define ecb_likely(expr) ecb_expect_true (expr) 1052#define ecb_likely(expr) ecb_expect_true (expr)
806#define ecb_unlikely(expr) ecb_expect_false (expr) 1053#define ecb_unlikely(expr) ecb_expect_false (expr)
807 1054
808/* count trailing zero bits and count # of one bits */ 1055/* count trailing zero bits and count # of one bits */
809#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))
810 /* 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 */
811 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
812 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
813 #define ecb_ctz32(x) __builtin_ctz (x) 1063 #define ecb_ctz32(x) __builtin_ctz (x)
814 #define ecb_ctz64(x) __builtin_ctzll (x) 1064 #define ecb_ctz64(x) __builtin_ctzll (x)
815 #define ecb_popcount32(x) __builtin_popcount (x) 1065 #define ecb_popcount32(x) __builtin_popcount (x)
816 /* no popcountll */ 1066 /* no popcountll */
817#else 1067#else
818 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
819 ecb_function_ int 1069 ecb_function_ ecb_const int
820 ecb_ctz32 (uint32_t x) 1070 ecb_ctz32 (uint32_t x)
821 { 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
822 int r = 0; 1077 int r = 0;
823 1078
824 x &= ~x + 1; /* this isolates the lowest bit */ 1079 x &= ~x + 1; /* this isolates the lowest bit */
825 1080
826#if ECB_branchless_on_i386 1081#if ECB_branchless_on_i386
… …
836 if (x & 0xff00ff00) r += 8; 1091 if (x & 0xff00ff00) r += 8;
837 if (x & 0xffff0000) r += 16; 1092 if (x & 0xffff0000) r += 16;
838#endif 1093#endif
839 1094
840 return r; 1095 return r;
1096#endif
841 } 1097 }
842 1098
843 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
844 ecb_function_ int 1100 ecb_function_ ecb_const int
845 ecb_ctz64 (uint64_t x) 1101 ecb_ctz64 (uint64_t x)
846 { 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
847 int shift = x & 0xffffffffU ? 0 : 32; 1108 int shift = x & 0xffffffff ? 0 : 32;
848 return ecb_ctz32 (x >> shift) + shift; 1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
849 } 1111 }
850 1112
851 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
852 ecb_function_ int 1114 ecb_function_ ecb_const int
853 ecb_popcount32 (uint32_t x) 1115 ecb_popcount32 (uint32_t x)
854 { 1116 {
855 x -= (x >> 1) & 0x55555555; 1117 x -= (x >> 1) & 0x55555555;
856 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
857 x = ((x >> 4) + x) & 0x0f0f0f0f; 1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
858 x *= 0x01010101; 1120 x *= 0x01010101;
859 1121
860 return x >> 24; 1122 return x >> 24;
861 } 1123 }
862 1124
863 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
864 ecb_function_ int ecb_ld32 (uint32_t x) 1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
865 { 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
866 int r = 0; 1133 int r = 0;
867 1134
868 if (x >> 16) { x >>= 16; r += 16; } 1135 if (x >> 16) { x >>= 16; r += 16; }
869 if (x >> 8) { x >>= 8; r += 8; } 1136 if (x >> 8) { x >>= 8; r += 8; }
870 if (x >> 4) { x >>= 4; r += 4; } 1137 if (x >> 4) { x >>= 4; r += 4; }
871 if (x >> 2) { x >>= 2; r += 2; } 1138 if (x >> 2) { x >>= 2; r += 2; }
872 if (x >> 1) { r += 1; } 1139 if (x >> 1) { r += 1; }
873 1140
874 return r; 1141 return r;
1142#endif
875 } 1143 }
876 1144
877 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
878 ecb_function_ int ecb_ld64 (uint64_t x) 1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
879 { 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
880 int r = 0; 1153 int r = 0;
881 1154
882 if (x >> 32) { x >>= 32; r += 32; } 1155 if (x >> 32) { x >>= 32; r += 32; }
883 1156
884 return r + ecb_ld32 (x); 1157 return r + ecb_ld32 (x);
1158#endif
885 } 1159 }
886#endif 1160#endif
887 1161
888ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
889ecb_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)); }
890ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
891ecb_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)); }
892 1166
893ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
894ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
895{ 1169{
896 return ( (x * 0x0802U & 0x22110U) 1170 return ( (x * 0x0802U & 0x22110U)
897 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
898} 1172}
899 1173
900ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
901ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
902{ 1176{
903 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
904 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
905 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
906 x = ( x >> 8 ) | ( x << 8); 1180 x = ( x >> 8 ) | ( x << 8);
907 1181
908 return x; 1182 return x;
909} 1183}
910 1184
911ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
912ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
913{ 1187{
914 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
915 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
916 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
917 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
920 return x; 1194 return x;
921} 1195}
922 1196
923/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
924/* so for this version we are lazy */ 1198/* so for this version we are lazy */
925ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
926ecb_function_ int 1200ecb_function_ ecb_const int
927ecb_popcount64 (uint64_t x) 1201ecb_popcount64 (uint64_t x)
928{ 1202{
929 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
930} 1204}
931 1205
932ecb_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);
933ecb_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);
934ecb_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);
935ecb_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);
936ecb_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);
937ecb_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);
938ecb_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);
939ecb_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);
940 1214
941ecb_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); }
942ecb_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); }
943ecb_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); }
944ecb_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); }
945ecb_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); }
946ecb_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); }
947ecb_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); }
948ecb_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); }
949 1223
950#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
951 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
952 #define ecb_bswap32(x) __builtin_bswap32 (x) 1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
953 #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)))
954#else 1275#else
955 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
956 ecb_function_ uint16_t 1277 ecb_function_ ecb_const uint16_t
957 ecb_bswap16 (uint16_t x) 1278 ecb_bswap16 (uint16_t x)
958 { 1279 {
959 return ecb_rotl16 (x, 8); 1280 return ecb_rotl16 (x, 8);
960 } 1281 }
961 1282
962 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
963 ecb_function_ uint32_t 1284 ecb_function_ ecb_const uint32_t
964 ecb_bswap32 (uint32_t x) 1285 ecb_bswap32 (uint32_t x)
965 { 1286 {
966 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
967 } 1288 }
968 1289
969 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
970 ecb_function_ uint64_t 1291 ecb_function_ ecb_const uint64_t
971 ecb_bswap64 (uint64_t x) 1292 ecb_bswap64 (uint64_t x)
972 { 1293 {
973 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
974 } 1295 }
975#endif 1296#endif
976 1297
977#if ECB_GCC_VERSION(4,5) 1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
978 #define ecb_unreachable() __builtin_unreachable () 1299 #define ecb_unreachable() __builtin_unreachable ()
979#else 1300#else
980 /* 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 :/ */
981 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
982 ecb_inline void ecb_unreachable (void) { } 1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
983#endif 1304#endif
984 1305
985/* try to tell the compiler that some condition is definitely true */ 1306/* try to tell the compiler that some condition is definitely true */
986#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
987 1308
988ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
989ecb_inline unsigned char 1310ecb_inline ecb_const uint32_t
990ecb_byteorder_helper (void) 1311ecb_byteorder_helper (void)
991{ 1312{
992 /* the union code still generates code under pressure in gcc, */ 1313 /* the union code still generates code under pressure in gcc, */
993 /* but less than using pointers, and always seems to */ 1314 /* but less than using pointers, and always seems to */
994 /* successfully return a constant. */ 1315 /* successfully return a constant. */
995 /* the reason why we have this horrible preprocessor mess */ 1316 /* the reason why we have this horrible preprocessor mess */
996 /* 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 */
997 /* or when using a recent enough gcc version (>= 4.6) */ 1318 /* or when using a recent enough gcc version (>= 4.6) */
998#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
999 return 0x44;
1000#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
1001 return 0x44; 1322 return 0x44332211;
1002#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
1003 return 0x11; 1326 return 0x11223344;
1004#else 1327#else
1005 union 1328 union
1006 { 1329 {
1330 uint8_t c[4];
1007 uint32_t i; 1331 uint32_t u;
1008 uint8_t c;
1009 } u = { 0x11223344 }; 1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1010 return u.c; 1333 return u.u;
1011#endif 1334#endif
1012} 1335}
1013 1336
1014ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1015ecb_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; }
1016ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1017ecb_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/*****************************************************************************/
1018 1413
1019#if ECB_GCC_VERSION(3,0) || ECB_C99 1414#if ECB_GCC_VERSION(3,0) || ECB_C99
1020 #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))
1021#else 1416#else
1022 #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)))
1023#endif 1418#endif
1024 1419
1025#if __cplusplus 1420#if ECB_CPP
1026 template<typename T> 1421 template<typename T>
1027 static inline T ecb_div_rd (T val, T div) 1422 static inline T ecb_div_rd (T val, T div)
1028 { 1423 {
1029 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1030 } 1425 }
… …
1047 } 1442 }
1048#else 1443#else
1049 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1050#endif 1445#endif
1051 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
1052/*******************************************************************************/ 1545/*******************************************************************************/
1053/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1054 1547
1055/* basically, everything uses "ieee pure-endian" floating point numbers */ 1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1056/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1057#if 0 \ 1550#if 0 \
1058 || __i386 || __i386__ \ 1551 || __i386 || __i386__ \
1059 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1552 || ECB_GCC_AMD64 \
1060 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1061 || defined __arm__ && defined __ARM_EABI__ \
1062 || defined __s390__ || defined __s390x__ \ 1554 || defined __s390__ || defined __s390x__ \
1063 || defined __mips__ \ 1555 || defined __mips__ \
1064 || defined __alpha__ \ 1556 || defined __alpha__ \
1065 || defined __hppa__ \ 1557 || defined __hppa__ \
1066 || defined __ia64__ \ 1558 || defined __ia64__ \
1067 || defined __m68k__ \ 1559 || defined __m68k__ \
1068 || defined __m88k__ \ 1560 || defined __m88k__ \
1069 || defined __sh__ \ 1561 || defined __sh__ \
1070 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1564 || defined __aarch64__
1071 #define ECB_STDFP 1 1565 #define ECB_STDFP 1
1072 #include <string.h> /* for memcpy */
1073#else 1566#else
1074 #define ECB_STDFP 0 1567 #define ECB_STDFP 0
1075#endif 1568#endif
1076 1569
1077#ifndef ECB_NO_LIBM 1570#ifndef ECB_NO_LIBM
… …
1089 #define ECB_NAN NAN 1582 #define ECB_NAN NAN
1090 #else 1583 #else
1091 #define ECB_NAN ECB_INFINITY 1584 #define ECB_NAN ECB_INFINITY
1092 #endif 1585 #endif
1093 1586
1094 /* converts an ieee half/binary16 to a float */ 1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1095 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1096 ecb_function_ float 1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1097 ecb_binary16_to_float (uint16_t x) 1590 #else
1098 { 1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1099 int e = (x >> 10) & 0x1f; 1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1100 int m = x & 0x3ff; 1593 #endif
1101 float r;
1102
1103 if (!e ) r = ldexpf (m , -24);
1104 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1105 else if (m ) r = ECB_NAN;
1106 else r = ECB_INFINITY;
1107
1108 return x & 0x8000 ? -r : r;
1109 }
1110 1594
1111 /* convert a float to ieee single/binary32 */ 1595 /* convert a float to ieee single/binary32 */
1112 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);
1113 ecb_function_ uint32_t 1597 ecb_function_ ecb_const uint32_t
1114 ecb_float_to_binary32 (float x) 1598 ecb_float_to_binary32 (float x)
1115 { 1599 {
1116 uint32_t r; 1600 uint32_t r;
1117 1601
1118 #if ECB_STDFP 1602 #if ECB_STDFP
… …
1125 if (x == 0e0f ) return 0x00000000U; 1609 if (x == 0e0f ) return 0x00000000U;
1126 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1127 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1128 if (x != x ) return 0x7fbfffffU; 1612 if (x != x ) return 0x7fbfffffU;
1129 1613
1130 m = frexpf (x, &e) * 0x1000000U; 1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1131 1615
1132 r = m & 0x80000000U; 1616 r = m & 0x80000000U;
1133 1617
1134 if (r) 1618 if (r)
1135 m = -m; 1619 m = -m;
… …
1147 1631
1148 return r; 1632 return r;
1149 } 1633 }
1150 1634
1151 /* converts an ieee single/binary32 to a float */ 1635 /* converts an ieee single/binary32 to a float */
1152 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);
1153 ecb_function_ float 1637 ecb_function_ ecb_const float
1154 ecb_binary32_to_float (uint32_t x) 1638 ecb_binary32_to_float (uint32_t x)
1155 { 1639 {
1156 float r; 1640 float r;
1157 1641
1158 #if ECB_STDFP 1642 #if ECB_STDFP
… …
1168 x |= 0x800000U; 1652 x |= 0x800000U;
1169 else 1653 else
1170 e = 1; 1654 e = 1;
1171 1655
1172 /* 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 */
1173 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1174 1658
1175 r = neg ? -r : r; 1659 r = neg ? -r : r;
1176 #endif 1660 #endif
1177 1661
1178 return r; 1662 return r;
1179 } 1663 }
1180 1664
1181 /* convert a double to ieee double/binary64 */ 1665 /* convert a double to ieee double/binary64 */
1182 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);
1183 ecb_function_ uint64_t 1667 ecb_function_ ecb_const uint64_t
1184 ecb_double_to_binary64 (double x) 1668 ecb_double_to_binary64 (double x)
1185 { 1669 {
1186 uint64_t r; 1670 uint64_t r;
1187 1671
1188 #if ECB_STDFP 1672 #if ECB_STDFP
… …
1217 1701
1218 return r; 1702 return r;
1219 } 1703 }
1220 1704
1221 /* converts an ieee double/binary64 to a double */ 1705 /* converts an ieee double/binary64 to a double */
1222 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);
1223 ecb_function_ double 1707 ecb_function_ ecb_const double
1224 ecb_binary64_to_double (uint64_t x) 1708 ecb_binary64_to_double (uint64_t x)
1225 { 1709 {
1226 double r; 1710 double r;
1227 1711
1228 #if ECB_STDFP 1712 #if ECB_STDFP
… …
1246 #endif 1730 #endif
1247 1731
1248 return r; 1732 return r;
1249 } 1733 }
1250 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
1251#endif 1751#endif
1252 1752
1253#endif 1753#endif
1254 1754
1255/* ECB.H END */ 1755/* ECB.H END */
1256 1756
1257#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1258/* 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
1259 * 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
1260 * 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
1261 * libev, in which cases the memory fences become nops. 1761 * libev, in which cases the memory fences become nops.
1262 * alternatively, you can remove this #error and link against libpthread, 1762 * alternatively, you can remove this #error and link against libpthread,
1263 * which will then provide the memory fences. 1763 * which will then provide the memory fences.
1264 */ 1764 */
1265# error "memory fences not defined for your architecture, please report" 1765# error "memory fences not defined for your architecture, please report"
… …
1269# define ECB_MEMORY_FENCE do { } while (0) 1769# define ECB_MEMORY_FENCE do { } while (0)
1270# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1271# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1272#endif 1772#endif
1273 1773
1274#define expect_false(cond) ecb_expect_false (cond)
1275#define expect_true(cond) ecb_expect_true (cond)
1276#define noinline ecb_noinline
1277
1278#define inline_size ecb_inline 1774#define inline_size ecb_inline
1279 1775
1280#if EV_FEATURE_CODE 1776#if EV_FEATURE_CODE
1281# define inline_speed ecb_inline 1777# define inline_speed ecb_inline
1282#else 1778#else
1283# define inline_speed static noinline 1779# define inline_speed ecb_noinline static
1284#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/*****************************************************************************/
1285 1847
1286#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1287 1849
1288#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
1289# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
1290#else 1852#else
1291# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1292#endif 1854#endif
1293 1855
1294#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
1295#define EMPTY2(a,b) /* used to suppress some warnings */
1296 1857
1297typedef ev_watcher *W; 1858typedef ev_watcher *W;
1298typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
1299typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
1300 1861
… …
1325# include "ev_win32.c" 1886# include "ev_win32.c"
1326#endif 1887#endif
1327 1888
1328/*****************************************************************************/ 1889/*****************************************************************************/
1329 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1330/* define a suitable floor function (only used by periodics atm) */ 1895/* define a suitable floor function (only used by periodics atm) */
1331 1896
1332#if EV_USE_FLOOR 1897#if EV_USE_FLOOR
1333# include <math.h> 1898# include <math.h>
1334# define ev_floor(v) floor (v) 1899# define ev_floor(v) floor (v)
1335#else 1900#else
1336 1901
1337#include <float.h> 1902#include <float.h>
1338 1903
1339/* 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
1340static ev_tstamp noinline 1906static ev_tstamp
1341ev_floor (ev_tstamp v) 1907ev_floor (ev_tstamp v)
1342{ 1908{
1343 /* the choice of shift factor is not terribly important */ 1909 /* the choice of shift factor is not terribly important */
1344#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1345 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1346#else 1912#else
1347 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1348#endif 1914#endif
1349 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
1350 /* argument too large for an unsigned long? */ 1924 /* argument too large for an unsigned long? then reduce it */
1351 if (expect_false (v >= shift)) 1925 if (ecb_expect_false (v >= shift))
1352 { 1926 {
1353 ev_tstamp f; 1927 ev_tstamp f;
1354 1928
1355 if (v == v - 1.) 1929 if (v == v - 1.)
1356 return v; /* very large number */ 1930 return v; /* very large numbers are assumed to be integer */
1357 1931
1358 f = shift * ev_floor (v * (1. / shift)); 1932 f = shift * ev_floor (v * (1. / shift));
1359 return f + ev_floor (v - f); 1933 return f + ev_floor (v - f);
1360 } 1934 }
1361 1935
1362 /* special treatment for negative args? */
1363 if (expect_false (v < 0.))
1364 {
1365 ev_tstamp f = -ev_floor (-v);
1366
1367 return f - (f == v ? 0 : 1);
1368 }
1369
1370 /* fits into an unsigned long */ 1936 /* fits into an unsigned long */
1371 return (unsigned long)v; 1937 return (unsigned long)v;
1372} 1938}
1373 1939
1374#endif 1940#endif
… …
1377 1943
1378#ifdef __linux 1944#ifdef __linux
1379# include <sys/utsname.h> 1945# include <sys/utsname.h>
1380#endif 1946#endif
1381 1947
1382static unsigned int noinline ecb_cold 1948ecb_noinline ecb_cold
1949static unsigned int
1383ev_linux_version (void) 1950ev_linux_version (void)
1384{ 1951{
1385#ifdef __linux 1952#ifdef __linux
1386 unsigned int v = 0; 1953 unsigned int v = 0;
1387 struct utsname buf; 1954 struct utsname buf;
… …
1416} 1983}
1417 1984
1418/*****************************************************************************/ 1985/*****************************************************************************/
1419 1986
1420#if EV_AVOID_STDIO 1987#if EV_AVOID_STDIO
1421static void noinline ecb_cold 1988ecb_noinline ecb_cold
1989static void
1422ev_printerr (const char *msg) 1990ev_printerr (const char *msg)
1423{ 1991{
1424 write (STDERR_FILENO, msg, strlen (msg)); 1992 write (STDERR_FILENO, msg, strlen (msg));
1425} 1993}
1426#endif 1994#endif
1427 1995
1428static void (*syserr_cb)(const char *msg) EV_THROW; 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1429 1997
1430void ecb_cold 1998ecb_cold
1999void
1431ev_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
1432{ 2001{
1433 syserr_cb = cb; 2002 syserr_cb = cb;
1434} 2003}
1435 2004
1436static void noinline ecb_cold 2005ecb_noinline ecb_cold
2006static void
1437ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
1438{ 2008{
1439 if (!msg) 2009 if (!msg)
1440 msg = "(libev) system error"; 2010 msg = "(libev) system error";
1441 2011
… …
1454 abort (); 2024 abort ();
1455 } 2025 }
1456} 2026}
1457 2027
1458static void * 2028static void *
1459ev_realloc_emul (void *ptr, long size) EV_THROW 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1460{ 2030{
1461 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
1462 * 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
1463 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
1464 * recently, also (at least) fedora and debian started breaking it, 2034 * recently, also (at least) fedora and debian started breaking it,
… …
1470 2040
1471 free (ptr); 2041 free (ptr);
1472 return 0; 2042 return 0;
1473} 2043}
1474 2044
1475static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1476 2046
1477void ecb_cold 2047ecb_cold
2048void
1478ev_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
1479{ 2050{
1480 alloc = cb; 2051 alloc = cb;
1481} 2052}
1482 2053
1483inline_speed void * 2054inline_speed void *
… …
1510typedef struct 2081typedef struct
1511{ 2082{
1512 WL head; 2083 WL head;
1513 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
1514 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) */
1515 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 */
1516 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
1517#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
1518 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
1519#endif 2090#endif
1520#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1521 SOCKET handle; 2092 SOCKET handle;
… …
1575 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
1576 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 */
1577 2148
1578#else 2149#else
1579 2150
1580 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 */
1581 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
1582 #include "ev_vars.h" 2153 #include "ev_vars.h"
1583 #undef VAR 2154 #undef VAR
1584 2155
1585 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
1586 2157
1587#endif 2158#endif
1588 2159
1589#if EV_FEATURE_API 2160#if EV_FEATURE_API
1590# 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)
1591# 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)
1592# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
1593#else 2164#else
1594# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
1595# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
1596# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1600 2171
1601/*****************************************************************************/ 2172/*****************************************************************************/
1602 2173
1603#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
1604ev_tstamp 2175ev_tstamp
1605ev_time (void) EV_THROW 2176ev_time (void) EV_NOEXCEPT
1606{ 2177{
1607#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
1608 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
1609 { 2180 {
1610 struct timespec ts; 2181 struct timespec ts;
1611 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
1612 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
1613 } 2184 }
1614#endif 2185#endif
1615 2186
2187 {
1616 struct timeval tv; 2188 struct timeval tv;
1617 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
1618 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
1619} 2192}
1620#endif 2193#endif
1621 2194
1622inline_size ev_tstamp 2195inline_size ev_tstamp
1623get_clock (void) 2196get_clock (void)
1624{ 2197{
1625#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
1626 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
1627 { 2200 {
1628 struct timespec ts; 2201 struct timespec ts;
1629 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
1630 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
1631 } 2204 }
1632#endif 2205#endif
1633 2206
1634 return ev_time (); 2207 return ev_time ();
1635} 2208}
1636 2209
1637#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
1638ev_tstamp 2211ev_tstamp
1639ev_now (EV_P) EV_THROW 2212ev_now (EV_P) EV_NOEXCEPT
1640{ 2213{
1641 return ev_rt_now; 2214 return ev_rt_now;
1642} 2215}
1643#endif 2216#endif
1644 2217
1645void 2218void
1646ev_sleep (ev_tstamp delay) EV_THROW 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1647{ 2220{
1648 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
1649 { 2222 {
1650#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
1651 struct timespec ts; 2224 struct timespec ts;
1652 2225
1653 EV_TS_SET (ts, delay); 2226 EV_TS_SET (ts, delay);
1654 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
1655#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) */
1656 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1657#else 2232#else
1658 struct timeval tv; 2233 struct timeval tv;
1659 2234
1660 /* 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 */
1661 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1691 } 2266 }
1692 2267
1693 return ncur; 2268 return ncur;
1694} 2269}
1695 2270
1696static void * noinline ecb_cold 2271ecb_noinline ecb_cold
2272static void *
1697array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
1698{ 2274{
1699 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
1700 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
1701} 2277}
1702 2278
2279#define array_needsize_noinit(base,offset,count)
2280
1703#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
1704 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1705 2283
1706#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
1707 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
1708 { \ 2286 { \
1709 int ecb_unused ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
1710 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
1711 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
1712 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
1713 } 2291 }
1714 2292
1715#if 0 2293#if 0
1716#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
1717 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1726 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
1727 2305
1728/*****************************************************************************/ 2306/*****************************************************************************/
1729 2307
1730/* dummy callback for pending events */ 2308/* dummy callback for pending events */
1731static void noinline 2309ecb_noinline
2310static void
1732pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
1733{ 2312{
1734} 2313}
1735 2314
1736void noinline 2315ecb_noinline
2316void
1737ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1738{ 2318{
1739 W w_ = (W)w; 2319 W w_ = (W)w;
1740 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
1741 2321
1742 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
1743 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
1744 else 2324 else
1745 { 2325 {
1746 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
1747 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1748 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
1749 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
1750 } 2330 }
1751 2331
1752 pendingpri = NUMPRI - 1; 2332 pendingpri = NUMPRI - 1;
1753} 2333}
1754 2334
1755inline_speed void 2335inline_speed void
1756feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
1757{ 2337{
1758 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1759 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
1760} 2340}
1761 2341
1762inline_size void 2342inline_size void
1763feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
1798inline_speed void 2378inline_speed void
1799fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
1800{ 2380{
1801 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
1802 2382
1803 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
1804 fd_event_nocheck (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
1805} 2385}
1806 2386
1807void 2387void
1808ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1809{ 2389{
1810 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
1811 fd_event_nocheck (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
1812} 2392}
1813 2393
… …
1816inline_size void 2396inline_size void
1817fd_reify (EV_P) 2397fd_reify (EV_P)
1818{ 2398{
1819 int i; 2399 int i;
1820 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
1821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1822 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
1823 { 2415 {
1824 int fd = fdchanges [i]; 2416 int fd = fdchanges [i];
1825 ANFD *anfd = anfds + fd; 2417 ANFD *anfd = anfds + fd;
1826 2418
1827 if (anfd->reify & EV__IOFDSET && anfd->head) 2419 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1841 } 2433 }
1842 } 2434 }
1843 } 2435 }
1844#endif 2436#endif
1845 2437
1846 for (i = 0; i < fdchangecnt; ++i) 2438 for (i = 0; i < changecnt; ++i)
1847 { 2439 {
1848 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
1849 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
1850 ev_io *w; 2442 ev_io *w;
1851 2443
1852 unsigned char o_events = anfd->events; 2444 unsigned char o_events = anfd->events;
1853 unsigned char o_reify = anfd->reify; 2445 unsigned char o_reify = anfd->reify;
1854 2446
1855 anfd->reify = 0; 2447 anfd->reify = 0;
1856 2448
1857 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1858 { 2450 {
1859 anfd->events = 0; 2451 anfd->events = 0;
1860 2452
1861 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)
1862 anfd->events |= (unsigned char)w->events; 2454 anfd->events |= (unsigned char)w->events;
… …
1867 2459
1868 if (o_reify & EV__IOFDSET) 2460 if (o_reify & EV__IOFDSET)
1869 backend_modify (EV_A_ fd, o_events, anfd->events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
1870 } 2462 }
1871 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
1872 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
1873} 2472}
1874 2473
1875/* something about the given fd changed */ 2474/* something about the given fd changed */
1876inline_size void 2475inline_size
2476void
1877fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
1878{ 2478{
1879 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
1880 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
1881 2481
1882 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
1883 { 2483 {
1884 ++fdchangecnt; 2484 ++fdchangecnt;
1885 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1886 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
1887 } 2487 }
1888} 2488}
1889 2489
1890/* 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 */
1891inline_speed void ecb_cold 2491inline_speed ecb_cold void
1892fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
1893{ 2493{
1894 ev_io *w; 2494 ev_io *w;
1895 2495
1896 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
1899 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);
1900 } 2500 }
1901} 2501}
1902 2502
1903/* check whether the given fd is actually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
1904inline_size int ecb_cold 2504inline_size ecb_cold int
1905fd_valid (int fd) 2505fd_valid (int fd)
1906{ 2506{
1907#ifdef _WIN32 2507#ifdef _WIN32
1908 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1909#else 2509#else
1910 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
1911#endif 2511#endif
1912} 2512}
1913 2513
1914/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
1915static void noinline ecb_cold 2515ecb_noinline ecb_cold
2516static void
1916fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
1917{ 2518{
1918 int fd; 2519 int fd;
1919 2520
1920 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
1922 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
1923 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
1924} 2525}
1925 2526
1926/* 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 */
1927static void noinline ecb_cold 2528ecb_noinline ecb_cold
2529static void
1928fd_enomem (EV_P) 2530fd_enomem (EV_P)
1929{ 2531{
1930 int fd; 2532 int fd;
1931 2533
1932 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
1936 break; 2538 break;
1937 } 2539 }
1938} 2540}
1939 2541
1940/* 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 */
1941static void noinline 2543ecb_noinline
2544static void
1942fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1943{ 2546{
1944 int fd; 2547 int fd;
1945 2548
1946 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
1999 ev_tstamp minat; 2602 ev_tstamp minat;
2000 ANHE *minpos; 2603 ANHE *minpos;
2001 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2002 2605
2003 /* find minimum child */ 2606 /* find minimum child */
2004 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
2005 { 2608 {
2006 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2007 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));
2008 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));
2009 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));
2010 } 2613 }
2011 else if (pos < E) 2614 else if (pos < E)
2012 { 2615 {
2013 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2014 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));
2015 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));
2016 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));
2017 } 2620 }
2018 else 2621 else
2019 break; 2622 break;
2020 2623
2021 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
2029 2632
2030 heap [k] = he; 2633 heap [k] = he;
2031 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
2032} 2635}
2033 2636
2034#else /* 4HEAP */ 2637#else /* not 4HEAP */
2035 2638
2036#define HEAP0 1 2639#define HEAP0 1
2037#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
2038#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
2039 2642
… …
2111 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
2112} 2715}
2113 2716
2114/*****************************************************************************/ 2717/*****************************************************************************/
2115 2718
2116/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
2117typedef struct 2720typedef struct
2118{ 2721{
2119 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
2120#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
2121 EV_P; 2724 EV_P;
… …
2127 2730
2128/*****************************************************************************/ 2731/*****************************************************************************/
2129 2732
2130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2131 2734
2132static void noinline ecb_cold 2735ecb_noinline ecb_cold
2736static void
2133evpipe_init (EV_P) 2737evpipe_init (EV_P)
2134{ 2738{
2135 if (!ev_is_active (&pipe_w)) 2739 if (!ev_is_active (&pipe_w))
2136 { 2740 {
2137 int fds [2]; 2741 int fds [2];
… …
2177inline_speed void 2781inline_speed void
2178evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2179{ 2783{
2180 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 */
2181 2785
2182 if (expect_true (*flag)) 2786 if (ecb_expect_true (*flag))
2183 return; 2787 return;
2184 2788
2185 *flag = 1; 2789 *flag = 1;
2186 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 */
2187 2791
… …
2208#endif 2812#endif
2209 { 2813 {
2210#ifdef _WIN32 2814#ifdef _WIN32
2211 WSABUF buf; 2815 WSABUF buf;
2212 DWORD sent; 2816 DWORD sent;
2213 buf.buf = &buf; 2817 buf.buf = (char *)&buf;
2214 buf.len = 1; 2818 buf.len = 1;
2215 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);
2216#else 2820#else
2217 write (evpipe [1], &(evpipe [1]), 1); 2821 write (evpipe [1], &(evpipe [1]), 1);
2218#endif 2822#endif
… …
2264 sig_pending = 0; 2868 sig_pending = 0;
2265 2869
2266 ECB_MEMORY_FENCE; 2870 ECB_MEMORY_FENCE;
2267 2871
2268 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
2269 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
2270 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
2271 } 2875 }
2272#endif 2876#endif
2273 2877
2274#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
… …
2290} 2894}
2291 2895
2292/*****************************************************************************/ 2896/*****************************************************************************/
2293 2897
2294void 2898void
2295ev_feed_signal (int signum) EV_THROW 2899ev_feed_signal (int signum) EV_NOEXCEPT
2296{ 2900{
2297#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2298 EV_P; 2902 EV_P;
2299 ECB_MEMORY_FENCE_ACQUIRE; 2903 ECB_MEMORY_FENCE_ACQUIRE;
2300 EV_A = signals [signum - 1].loop; 2904 EV_A = signals [signum - 1].loop;
… …
2315#endif 2919#endif
2316 2920
2317 ev_feed_signal (signum); 2921 ev_feed_signal (signum);
2318} 2922}
2319 2923
2320void noinline 2924ecb_noinline
2925void
2321ev_feed_signal_event (EV_P_ int signum) EV_THROW 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2322{ 2927{
2323 WL w; 2928 WL w;
2324 2929
2325 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2326 return; 2931 return;
2327 2932
2328 --signum; 2933 --signum;
2329 2934
2330#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
2331 /* 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 */
2332 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
2333 2938
2334 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
2335 return; 2940 return;
2336#endif 2941#endif
2337 2942
2338 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2339 ECB_MEMORY_FENCE_RELEASE; 2944 ECB_MEMORY_FENCE_RELEASE;
… …
2423 3028
2424#endif 3029#endif
2425 3030
2426/*****************************************************************************/ 3031/*****************************************************************************/
2427 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
2428#if EV_USE_IOCP 3084#if EV_USE_IOCP
2429# include "ev_iocp.c" 3085# include "ev_iocp.c"
2430#endif 3086#endif
2431#if EV_USE_PORT 3087#if EV_USE_PORT
2432# include "ev_port.c" 3088# include "ev_port.c"
… …
2435# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
2436#endif 3092#endif
2437#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
2438# include "ev_epoll.c" 3094# include "ev_epoll.c"
2439#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
2440#if EV_USE_POLL 3102#if EV_USE_POLL
2441# include "ev_poll.c" 3103# include "ev_poll.c"
2442#endif 3104#endif
2443#if EV_USE_SELECT 3105#if EV_USE_SELECT
2444# include "ev_select.c" 3106# include "ev_select.c"
2445#endif 3107#endif
2446 3108
2447int ecb_cold 3109ecb_cold int
2448ev_version_major (void) EV_THROW 3110ev_version_major (void) EV_NOEXCEPT
2449{ 3111{
2450 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
2451} 3113}
2452 3114
2453int ecb_cold 3115ecb_cold int
2454ev_version_minor (void) EV_THROW 3116ev_version_minor (void) EV_NOEXCEPT
2455{ 3117{
2456 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
2457} 3119}
2458 3120
2459/* 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 */
2460int inline_size ecb_cold 3122inline_size ecb_cold int
2461enable_secure (void) 3123enable_secure (void)
2462{ 3124{
2463#ifdef _WIN32 3125#ifdef _WIN32
2464 return 0; 3126 return 0;
2465#else 3127#else
2466 return getuid () != geteuid () 3128 return getuid () != geteuid ()
2467 || getgid () != getegid (); 3129 || getgid () != getegid ();
2468#endif 3130#endif
2469} 3131}
2470 3132
2471unsigned int ecb_cold 3133ecb_cold
3134unsigned int
2472ev_supported_backends (void) EV_THROW 3135ev_supported_backends (void) EV_NOEXCEPT
2473{ 3136{
2474 unsigned int flags = 0; 3137 unsigned int flags = 0;
2475 3138
2476 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2477 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2478 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2479 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2480 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2481 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
2482 return flags; 3147 return flags;
2483} 3148}
2484 3149
2485unsigned int ecb_cold 3150ecb_cold
3151unsigned int
2486ev_recommended_backends (void) EV_THROW 3152ev_recommended_backends (void) EV_NOEXCEPT
2487{ 3153{
2488 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
2489 3155
2490#ifndef __NetBSD__ 3156#ifndef __NetBSD__
2491 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
2499#endif 3165#endif
2500#ifdef __FreeBSD__ 3166#ifdef __FreeBSD__
2501 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) */
2502#endif 3168#endif
2503 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
2504 return flags; 3179 return flags;
2505} 3180}
2506 3181
2507unsigned int ecb_cold 3182ecb_cold
3183unsigned int
2508ev_embeddable_backends (void) EV_THROW 3184ev_embeddable_backends (void) EV_NOEXCEPT
2509{ 3185{
2510 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2511 3187
2512 /* 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 */
2513 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 */
2514 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
2515 3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3193
2516 return flags; 3194 return flags;
2517} 3195}
2518 3196
2519unsigned int 3197unsigned int
2520ev_backend (EV_P) EV_THROW 3198ev_backend (EV_P) EV_NOEXCEPT
2521{ 3199{
2522 return backend; 3200 return backend;
2523} 3201}
2524 3202
2525#if EV_FEATURE_API 3203#if EV_FEATURE_API
2526unsigned int 3204unsigned int
2527ev_iteration (EV_P) EV_THROW 3205ev_iteration (EV_P) EV_NOEXCEPT
2528{ 3206{
2529 return loop_count; 3207 return loop_count;
2530} 3208}
2531 3209
2532unsigned int 3210unsigned int
2533ev_depth (EV_P) EV_THROW 3211ev_depth (EV_P) EV_NOEXCEPT
2534{ 3212{
2535 return loop_depth; 3213 return loop_depth;
2536} 3214}
2537 3215
2538void 3216void
2539ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2540{ 3218{
2541 io_blocktime = interval; 3219 io_blocktime = interval;
2542} 3220}
2543 3221
2544void 3222void
2545ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2546{ 3224{
2547 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
2548} 3226}
2549 3227
2550void 3228void
2551ev_set_userdata (EV_P_ void *data) EV_THROW 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2552{ 3230{
2553 userdata = data; 3231 userdata = data;
2554} 3232}
2555 3233
2556void * 3234void *
2557ev_userdata (EV_P) EV_THROW 3235ev_userdata (EV_P) EV_NOEXCEPT
2558{ 3236{
2559 return userdata; 3237 return userdata;
2560} 3238}
2561 3239
2562void 3240void
2563ev_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
2564{ 3242{
2565 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
2566} 3244}
2567 3245
2568void 3246void
2569ev_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
2570{ 3248{
2571 release_cb = release; 3249 release_cb = release;
2572 acquire_cb = acquire; 3250 acquire_cb = acquire;
2573} 3251}
2574#endif 3252#endif
2575 3253
2576/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
2577static void noinline ecb_cold 3255ecb_noinline ecb_cold
3256static void
2578loop_init (EV_P_ unsigned int flags) EV_THROW 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2579{ 3258{
2580 if (!backend) 3259 if (!backend)
2581 { 3260 {
2582 origflags = flags; 3261 origflags = flags;
2583 3262
… …
2636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2637#endif 3316#endif
2638#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
2639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2640#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
2641 3323
2642 if (!(flags & EVBACKEND_MASK)) 3324 if (!(flags & EVBACKEND_MASK))
2643 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
2644 3326
2645#if EV_USE_IOCP 3327#if EV_USE_IOCP
2646 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2647#endif 3329#endif
2648#if EV_USE_PORT 3330#if EV_USE_PORT
2649 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2650#endif 3332#endif
2651#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
2652 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);
2653#endif 3341#endif
2654#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
2655 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2656#endif 3344#endif
2657#if EV_USE_POLL 3345#if EV_USE_POLL
2658 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2659#endif 3347#endif
2660#if EV_USE_SELECT 3348#if EV_USE_SELECT
2661 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2662#endif 3350#endif
2663 3351
2664 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
2665 3353
2666#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2669#endif 3357#endif
2670 } 3358 }
2671} 3359}
2672 3360
2673/* free up a loop structure */ 3361/* free up a loop structure */
2674void ecb_cold 3362ecb_cold
3363void
2675ev_loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
2676{ 3365{
2677 int i; 3366 int i;
2678 3367
2679#if EV_MULTIPLICITY 3368#if EV_MULTIPLICITY
… …
2682 return; 3371 return;
2683#endif 3372#endif
2684 3373
2685#if EV_CLEANUP_ENABLE 3374#if EV_CLEANUP_ENABLE
2686 /* queue cleanup watchers (and execute them) */ 3375 /* queue cleanup watchers (and execute them) */
2687 if (expect_false (cleanupcnt)) 3376 if (ecb_expect_false (cleanupcnt))
2688 { 3377 {
2689 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2690 EV_INVOKE_PENDING; 3379 EV_INVOKE_PENDING;
2691 } 3380 }
2692#endif 3381#endif
… …
2711#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
2712 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
2713 close (sigfd); 3402 close (sigfd);
2714#endif 3403#endif
2715 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
2716#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
2717 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
2718 close (fs_fd); 3412 close (fs_fd);
2719#endif 3413#endif
2720 3414
2721 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
2722 close (backend_fd); 3416 close (backend_fd);
2723 3417
2724#if EV_USE_IOCP 3418#if EV_USE_IOCP
2725 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2726#endif 3420#endif
2727#if EV_USE_PORT 3421#if EV_USE_PORT
2728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2729#endif 3423#endif
2730#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
2731 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);
2732#endif 3432#endif
2733#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
2734 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2735#endif 3435#endif
2736#if EV_USE_POLL 3436#if EV_USE_POLL
2737 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2738#endif 3438#endif
2739#if EV_USE_SELECT 3439#if EV_USE_SELECT
2740 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2741#endif 3441#endif
2742 3442
2743 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
2744 { 3444 {
2745 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
2787 3487
2788inline_size void 3488inline_size void
2789loop_fork (EV_P) 3489loop_fork (EV_P)
2790{ 3490{
2791#if EV_USE_PORT 3491#if EV_USE_PORT
2792 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2793#endif 3493#endif
2794#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
2795 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);
2796#endif 3502#endif
2797#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
2798 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2799#endif 3505#endif
2800#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2801 infy_fork (EV_A); 3507 infy_fork (EV_A);
2802#endif 3508#endif
2803 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
2804#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2805 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
2806 { 3533 {
2807 /* 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 */
2808 3535
2809 ev_ref (EV_A); 3536 ev_ref (EV_A);
2810 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
2811 3538
2812 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
2813 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
2814 3541
2815 evpipe_init (EV_A); 3542 evpipe_init (EV_A);
2816 /* iterate over everything, in case we missed something before */ 3543 /* iterate over everything, in case we missed something before */
2817 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3545 }
3546 #endif
2818 } 3547 }
2819#endif
2820 3548
2821 postfork = 0; 3549 postfork = 0;
2822} 3550}
2823 3551
2824#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2825 3553
3554ecb_cold
2826struct ev_loop * ecb_cold 3555struct ev_loop *
2827ev_loop_new (unsigned int flags) EV_THROW 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
2828{ 3557{
2829 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2830 3559
2831 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
2832 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
… …
2839} 3568}
2840 3569
2841#endif /* multiplicity */ 3570#endif /* multiplicity */
2842 3571
2843#if EV_VERIFY 3572#if EV_VERIFY
2844static void noinline ecb_cold 3573ecb_noinline ecb_cold
3574static void
2845verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
2846{ 3576{
2847 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));
2848 3578
2849 if (w->pending) 3579 if (w->pending)
2850 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));
2851} 3581}
2852 3582
2853static void noinline ecb_cold 3583ecb_noinline ecb_cold
3584static void
2854verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
2855{ 3586{
2856 int i; 3587 int i;
2857 3588
2858 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2863 3594
2864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2865 } 3596 }
2866} 3597}
2867 3598
2868static void noinline ecb_cold 3599ecb_noinline ecb_cold
3600static void
2869array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
2870{ 3602{
2871 while (cnt--) 3603 while (cnt--)
2872 { 3604 {
2873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2876} 3608}
2877#endif 3609#endif
2878 3610
2879#if EV_FEATURE_API 3611#if EV_FEATURE_API
2880void ecb_cold 3612void ecb_cold
2881ev_verify (EV_P) EV_THROW 3613ev_verify (EV_P) EV_NOEXCEPT
2882{ 3614{
2883#if EV_VERIFY 3615#if EV_VERIFY
2884 int i; 3616 int i;
2885 WL w, w2; 3617 WL w, w2;
2886 3618
… …
2962#endif 3694#endif
2963} 3695}
2964#endif 3696#endif
2965 3697
2966#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
2967struct ev_loop * ecb_cold 3700struct ev_loop *
2968#else 3701#else
2969int 3702int
2970#endif 3703#endif
2971ev_default_loop (unsigned int flags) EV_THROW 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
2972{ 3705{
2973 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
2974 { 3707 {
2975#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
2976 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2995 3728
2996 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
2997} 3730}
2998 3731
2999void 3732void
3000ev_loop_fork (EV_P) EV_THROW 3733ev_loop_fork (EV_P) EV_NOEXCEPT
3001{ 3734{
3002 postfork = 1; 3735 postfork = 1;
3003} 3736}
3004 3737
3005/*****************************************************************************/ 3738/*****************************************************************************/
… …
3009{ 3742{
3010 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
3011} 3744}
3012 3745
3013unsigned int 3746unsigned int
3014ev_pending_count (EV_P) EV_THROW 3747ev_pending_count (EV_P) EV_NOEXCEPT
3015{ 3748{
3016 int pri; 3749 int pri;
3017 unsigned int count = 0; 3750 unsigned int count = 0;
3018 3751
3019 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
3020 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
3021 3754
3022 return count; 3755 return count;
3023} 3756}
3024 3757
3025void noinline 3758ecb_noinline
3759void
3026ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
3027{ 3761{
3028 pendingpri = NUMPRI; 3762 pendingpri = NUMPRI;
3029 3763
3030 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3764 do
3031 { 3765 {
3032 --pendingpri; 3766 --pendingpri;
3033 3767
3768 /* pendingpri possibly gets modified in the inner loop */
3034 while (pendingcnt [pendingpri]) 3769 while (pendingcnt [pendingpri])
3035 { 3770 {
3036 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3037 3772
3038 p->w->pending = 0; 3773 p->w->pending = 0;
3039 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
3040 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
3041 } 3776 }
3042 } 3777 }
3778 while (pendingpri);
3043} 3779}
3044 3780
3045#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
3046/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
3047/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
3048inline_size void 3784inline_size void
3049idle_reify (EV_P) 3785idle_reify (EV_P)
3050{ 3786{
3051 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
3052 { 3788 {
3053 int pri; 3789 int pri;
3054 3790
3055 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
3056 { 3792 {
… …
3086 { 3822 {
3087 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
3088 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
3089 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
3090 3826
3091 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.)));
3092 3828
3093 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
3094 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
3095 } 3831 }
3096 else 3832 else
… …
3105 } 3841 }
3106} 3842}
3107 3843
3108#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
3109 3845
3110static void noinline 3846ecb_noinline
3847static void
3111periodic_recalc (EV_P_ ev_periodic *w) 3848periodic_recalc (EV_P_ ev_periodic *w)
3112{ 3849{
3113 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3114 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);
3115 3852
… …
3117 while (at <= ev_rt_now) 3854 while (at <= ev_rt_now)
3118 { 3855 {
3119 ev_tstamp nat = at + w->interval; 3856 ev_tstamp nat = at + w->interval;
3120 3857
3121 /* when resolution fails us, we use ev_rt_now */ 3858 /* when resolution fails us, we use ev_rt_now */
3122 if (expect_false (nat == at)) 3859 if (ecb_expect_false (nat == at))
3123 { 3860 {
3124 at = ev_rt_now; 3861 at = ev_rt_now;
3125 break; 3862 break;
3126 } 3863 }
3127 3864
… …
3173 } 3910 }
3174} 3911}
3175 3912
3176/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
3177/* 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? */
3178static void noinline ecb_cold 3915ecb_noinline ecb_cold
3916static void
3179periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
3180{ 3918{
3181 int i; 3919 int i;
3182 3920
3183 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
3196 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
3197} 3935}
3198#endif 3936#endif
3199 3937
3200/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
3201static void noinline ecb_cold 3939ecb_noinline ecb_cold
3940static void
3202timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
3203{ 3942{
3204 int i; 3943 int i;
3205 3944
3206 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
3215/* also detect if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
3216inline_speed void 3955inline_speed void
3217time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
3218{ 3957{
3219#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
3220 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
3221 { 3960 {
3222 int i; 3961 int i;
3223 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
3224 3963
3225 mn_now = get_clock (); 3964 mn_now = get_clock ();
3226 3965
3227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3228 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
3229 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)))
3230 { 3969 {
3231 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
3232 return; 3971 return;
3233 } 3972 }
3234 3973
… …
3248 ev_tstamp diff; 3987 ev_tstamp diff;
3249 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
3250 3989
3251 diff = odiff - rtmn_diff; 3990 diff = odiff - rtmn_diff;
3252 3991
3253 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)))
3254 return; /* all is well */ 3993 return; /* all is well */
3255 3994
3256 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
3257 mn_now = get_clock (); 3996 mn_now = get_clock ();
3258 now_floor = mn_now; 3997 now_floor = mn_now;
… …
3267 else 4006 else
3268#endif 4007#endif
3269 { 4008 {
3270 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
3271 4010
3272 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)))
3273 { 4012 {
3274 /* 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 */
3275 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3276#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
3277 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
3300#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
3301 ev_verify (EV_A); 4040 ev_verify (EV_A);
3302#endif 4041#endif
3303 4042
3304#ifndef _WIN32 4043#ifndef _WIN32
3305 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3306 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
3307 { 4046 {
3308 curpid = getpid (); 4047 curpid = getpid ();
3309 postfork = 1; 4048 postfork = 1;
3310 } 4049 }
3311#endif 4050#endif
3312 4051
3313#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
3314 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
3315 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
3316 if (forkcnt) 4055 if (forkcnt)
3317 { 4056 {
3318 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3319 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
3320 } 4059 }
3321#endif 4060#endif
3322 4061
3323#if EV_PREPARE_ENABLE 4062#if EV_PREPARE_ENABLE
3324 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
3325 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
3326 { 4065 {
3327 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3328 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
3329 } 4068 }
3330#endif 4069#endif
3331 4070
3332 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
3333 break; 4072 break;
3334 4073
3335 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
3336 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
3337 loop_fork (EV_A); 4076 loop_fork (EV_A);
3338 4077
3339 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
3340 fd_reify (EV_A); 4079 fd_reify (EV_A);
3341 4080
… …
3346 4085
3347 /* remember old timestamp for io_blocktime calculation */ 4086 /* remember old timestamp for io_blocktime calculation */
3348 ev_tstamp prev_mn_now = mn_now; 4087 ev_tstamp prev_mn_now = mn_now;
3349 4088
3350 /* update time to cancel out callback processing overhead */ 4089 /* update time to cancel out callback processing overhead */
3351 time_update (EV_A_ 1e100); 4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3352 4091
3353 /* from now on, we want a pipe-wake-up */ 4092 /* from now on, we want a pipe-wake-up */
3354 pipe_write_wanted = 1; 4093 pipe_write_wanted = 1;
3355 4094
3356 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 */
3357 4096
3358 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3359 { 4098 {
3360 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
3361 4116
3362 if (timercnt) 4117 if (timercnt)
3363 { 4118 {
3364 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3365 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
… …
3372 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
3373 } 4128 }
3374#endif 4129#endif
3375 4130
3376 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
3377 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
3378 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
3379 4134
3380 /* at this point, we NEED to wait, so we have to ensure */ 4135 /* now there are two more special cases left, either we have
3381 /* 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 */
3382 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.)
3383 waittime = backend_mintime; 4143 : backend_mintime;
3384 4144
3385 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
3386 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
3387 { 4147 {
3388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3389 4149
3390 if (sleeptime > waittime - backend_mintime) 4150 if (sleeptime > waittime - backend_mintime)
3391 sleeptime = waittime - backend_mintime; 4151 sleeptime = waittime - backend_mintime;
3392 4152
3393 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3394 { 4154 {
3395 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
3396 waittime -= sleeptime; 4156 waittime -= sleeptime;
3397 } 4157 }
3398 } 4158 }
… …
3412 { 4172 {
3413 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)));
3414 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3415 } 4175 }
3416 4176
3417
3418 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
3419 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
3420 } 4179 }
3421 4180
3422 /* queue pending timers and reschedule them */ 4181 /* queue pending timers and reschedule them */
… …
3430 idle_reify (EV_A); 4189 idle_reify (EV_A);
3431#endif 4190#endif
3432 4191
3433#if EV_CHECK_ENABLE 4192#if EV_CHECK_ENABLE
3434 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
3435 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
3436 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3437#endif 4196#endif
3438 4197
3439 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
3440 } 4199 }
3441 while (expect_true ( 4200 while (ecb_expect_true (
3442 activecnt 4201 activecnt
3443 && !loop_done 4202 && !loop_done
3444 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3445 )); 4204 ));
3446 4205
… …
3453 4212
3454 return activecnt; 4213 return activecnt;
3455} 4214}
3456 4215
3457void 4216void
3458ev_break (EV_P_ int how) EV_THROW 4217ev_break (EV_P_ int how) EV_NOEXCEPT
3459{ 4218{
3460 loop_done = how; 4219 loop_done = how;
3461} 4220}
3462 4221
3463void 4222void
3464ev_ref (EV_P) EV_THROW 4223ev_ref (EV_P) EV_NOEXCEPT
3465{ 4224{
3466 ++activecnt; 4225 ++activecnt;
3467} 4226}
3468 4227
3469void 4228void
3470ev_unref (EV_P) EV_THROW 4229ev_unref (EV_P) EV_NOEXCEPT
3471{ 4230{
3472 --activecnt; 4231 --activecnt;
3473} 4232}
3474 4233
3475void 4234void
3476ev_now_update (EV_P) EV_THROW 4235ev_now_update (EV_P) EV_NOEXCEPT
3477{ 4236{
3478 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
3479} 4238}
3480 4239
3481void 4240void
3482ev_suspend (EV_P) EV_THROW 4241ev_suspend (EV_P) EV_NOEXCEPT
3483{ 4242{
3484 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3485} 4244}
3486 4245
3487void 4246void
3488ev_resume (EV_P) EV_THROW 4247ev_resume (EV_P) EV_NOEXCEPT
3489{ 4248{
3490 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
3491 4250
3492 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
3493 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3510inline_size void 4269inline_size void
3511wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
3512{ 4271{
3513 while (*head) 4272 while (*head)
3514 { 4273 {
3515 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
3516 { 4275 {
3517 *head = elem->next; 4276 *head = elem->next;
3518 break; 4277 break;
3519 } 4278 }
3520 4279
… …
3532 w->pending = 0; 4291 w->pending = 0;
3533 } 4292 }
3534} 4293}
3535 4294
3536int 4295int
3537ev_clear_pending (EV_P_ void *w) EV_THROW 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3538{ 4297{
3539 W w_ = (W)w; 4298 W w_ = (W)w;
3540 int pending = w_->pending; 4299 int pending = w_->pending;
3541 4300
3542 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
3543 { 4302 {
3544 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3545 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
3546 w_->pending = 0; 4305 w_->pending = 0;
3547 return p->events; 4306 return p->events;
… …
3574 w->active = 0; 4333 w->active = 0;
3575} 4334}
3576 4335
3577/*****************************************************************************/ 4336/*****************************************************************************/
3578 4337
3579void noinline 4338ecb_noinline
4339void
3580ev_io_start (EV_P_ ev_io *w) EV_THROW 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3581{ 4341{
3582 int fd = w->fd; 4342 int fd = w->fd;
3583 4343
3584 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
3585 return; 4345 return;
3586 4346
3587 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3588 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))));
3589 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
3590 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3591 4354
3592 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
3593 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3594 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
3595 4358
3596 /* common bug, apparently */ 4359 /* common bug, apparently */
3597 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));
3598 4361
… …
3600 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
3601 4364
3602 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3603} 4366}
3604 4367
3605void noinline 4368ecb_noinline
4369void
3606ev_io_stop (EV_P_ ev_io *w) EV_THROW 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3607{ 4371{
3608 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
3609 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
3610 return; 4374 return;
3611 4375
3612 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));
3613 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
3614 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3615 4382
3616 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
3617 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
3618 4385
3619 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3620 4387
3621 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
3622} 4389}
3623 4390
3624void noinline 4391ecb_noinline
4392void
3625ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3626{ 4394{
3627 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3628 return; 4396 return;
3629 4397
3630 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
3631 4399
3632 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.));
3633 4401
3634 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
3635 4403
3636 ++timercnt; 4404 ++timercnt;
3637 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3638 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3639 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
3640 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
3641 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
3642 4410
3643 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3644 4412
3645 /*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));*/
3646} 4414}
3647 4415
3648void noinline 4416ecb_noinline
4417void
3649ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3650{ 4419{
3651 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
3652 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
3653 return; 4422 return;
3654 4423
3655 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
3656 4425
3657 { 4426 {
… …
3659 4428
3660 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));
3661 4430
3662 --timercnt; 4431 --timercnt;
3663 4432
3664 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
3665 { 4434 {
3666 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
3667 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
3668 } 4437 }
3669 } 4438 }
… …
3673 ev_stop (EV_A_ (W)w); 4442 ev_stop (EV_A_ (W)w);
3674 4443
3675 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3676} 4445}
3677 4446
3678void noinline 4447ecb_noinline
4448void
3679ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3680{ 4450{
3681 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
3682 4452
3683 clear_pending (EV_A_ (W)w); 4453 clear_pending (EV_A_ (W)w);
3684 4454
… …
3701 4471
3702 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3703} 4473}
3704 4474
3705ev_tstamp 4475ev_tstamp
3706ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3707{ 4477{
3708 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.));
3709} 4479}
3710 4480
3711#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
3712void noinline 4482ecb_noinline
4483void
3713ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3714{ 4485{
3715 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
3716 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
3717 4493
3718 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
3719 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3720 else if (w->interval) 4496 else if (w->interval)
3721 { 4497 {
… …
3727 4503
3728 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
3729 4505
3730 ++periodiccnt; 4506 ++periodiccnt;
3731 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3732 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3733 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3734 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
3735 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
3736 4512
3737 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3738 4514
3739 /*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));*/
3740} 4516}
3741 4517
3742void noinline 4518ecb_noinline
4519void
3743ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3744{ 4521{
3745 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
3746 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
3747 return; 4524 return;
3748 4525
3749 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
3750 4527
3751 { 4528 {
… …
3753 4530
3754 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));
3755 4532
3756 --periodiccnt; 4533 --periodiccnt;
3757 4534
3758 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
3759 { 4536 {
3760 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
3761 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
3762 } 4539 }
3763 } 4540 }
… …
3765 ev_stop (EV_A_ (W)w); 4542 ev_stop (EV_A_ (W)w);
3766 4543
3767 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3768} 4545}
3769 4546
3770void noinline 4547ecb_noinline
4548void
3771ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3772{ 4550{
3773 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
3774 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
3775 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
3776} 4554}
… …
3780# define SA_RESTART 0 4558# define SA_RESTART 0
3781#endif 4559#endif
3782 4560
3783#if EV_SIGNAL_ENABLE 4561#if EV_SIGNAL_ENABLE
3784 4562
3785void noinline 4563ecb_noinline
4564void
3786ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3787{ 4566{
3788 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
3789 return; 4568 return;
3790 4569
3791 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));
3792 4571
3793#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
… …
3862 } 4641 }
3863 4642
3864 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3865} 4644}
3866 4645
3867void noinline 4646ecb_noinline
4647void
3868ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3869{ 4649{
3870 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
3871 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
3872 return; 4652 return;
3873 4653
3874 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3875 4655
3876 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3904#endif 4684#endif
3905 4685
3906#if EV_CHILD_ENABLE 4686#if EV_CHILD_ENABLE
3907 4687
3908void 4688void
3909ev_child_start (EV_P_ ev_child *w) EV_THROW 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3910{ 4690{
3911#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
3912 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));
3913#endif 4693#endif
3914 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4695 return;
3916 4696
3917 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3918 4698
3919 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
… …
3921 4701
3922 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3923} 4703}
3924 4704
3925void 4705void
3926ev_child_stop (EV_P_ ev_child *w) EV_THROW 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3927{ 4707{
3928 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3929 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
3930 return; 4710 return;
3931 4711
3932 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3933 4713
3934 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3948 4728
3949#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
3950#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3951#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
3952 4732
3953static 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);
3954 4734
3955#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
3956 4736
3957/* 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 */
3958# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3959 4739
3960static void noinline 4740ecb_noinline
4741static void
3961infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
3962{ 4743{
3963 w->wd = inotify_add_watch (fs_fd, w->path, 4744 w->wd = inotify_add_watch (fs_fd, w->path,
3964 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3965 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4029 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4030 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
4031 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4032} 4813}
4033 4814
4034static void noinline 4815ecb_noinline
4816static void
4035infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
4036{ 4818{
4037 int slot; 4819 int slot;
4038 int wd = w->wd; 4820 int wd = w->wd;
4039 4821
… …
4046 4828
4047 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
4048 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
4049} 4831}
4050 4832
4051static void noinline 4833ecb_noinline
4834static void
4052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4053{ 4836{
4054 if (slot < 0) 4837 if (slot < 0)
4055 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
4056 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4092 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4093 ofs += sizeof (struct inotify_event) + ev->len; 4876 ofs += sizeof (struct inotify_event) + ev->len;
4094 } 4877 }
4095} 4878}
4096 4879
4097inline_size void ecb_cold 4880inline_size ecb_cold
4881void
4098ev_check_2625 (EV_P) 4882ev_check_2625 (EV_P)
4099{ 4883{
4100 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
4101 * 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
4102 */ 4886 */
… …
4192#else 4976#else
4193# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
4194#endif 4978#endif
4195 4979
4196void 4980void
4197ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4198{ 4982{
4199 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
4200 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
4201 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
4202 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
4203} 4987}
4204 4988
4205static void noinline 4989ecb_noinline
4990static void
4206stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4207{ 4992{
4208 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4209 4994
4210 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
4241 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
4242 } 5027 }
4243} 5028}
4244 5029
4245void 5030void
4246ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4247{ 5032{
4248 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
4249 return; 5034 return;
4250 5035
4251 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
4252 5037
4253 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4272 5057
4273 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
4274} 5059}
4275 5060
4276void 5061void
4277ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4278{ 5063{
4279 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
4280 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
4281 return; 5066 return;
4282 5067
4283 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4284 5069
4285#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
4298} 5083}
4299#endif 5084#endif
4300 5085
4301#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
4302void 5087void
4303ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4304{ 5089{
4305 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
4306 return; 5091 return;
4307 5092
4308 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
4309 5094
4310 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
4313 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
4314 5099
4315 ++idleall; 5100 ++idleall;
4316 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
4317 5102
4318 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);
4319 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
4320 } 5105 }
4321 5106
4322 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4323} 5108}
4324 5109
4325void 5110void
4326ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4327{ 5112{
4328 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4329 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4330 return; 5115 return;
4331 5116
4332 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4333 5118
4334 { 5119 {
… …
4345} 5130}
4346#endif 5131#endif
4347 5132
4348#if EV_PREPARE_ENABLE 5133#if EV_PREPARE_ENABLE
4349void 5134void
4350ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4351{ 5136{
4352 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
4353 return; 5138 return;
4354 5139
4355 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4356 5141
4357 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
4358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4359 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
4360 5145
4361 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
4362} 5147}
4363 5148
4364void 5149void
4365ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4366{ 5151{
4367 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
4368 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
4369 return; 5154 return;
4370 5155
4371 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
4372 5157
4373 { 5158 {
… …
4383} 5168}
4384#endif 5169#endif
4385 5170
4386#if EV_CHECK_ENABLE 5171#if EV_CHECK_ENABLE
4387void 5172void
4388ev_check_start (EV_P_ ev_check *w) EV_THROW 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4389{ 5174{
4390 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
4391 return; 5176 return;
4392 5177
4393 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4394 5179
4395 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
4396 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4397 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
4398 5183
4399 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
4400} 5185}
4401 5186
4402void 5187void
4403ev_check_stop (EV_P_ ev_check *w) EV_THROW 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4404{ 5189{
4405 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
4406 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
4407 return; 5192 return;
4408 5193
4409 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4410 5195
4411 { 5196 {
… …
4420 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
4421} 5206}
4422#endif 5207#endif
4423 5208
4424#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
4425void noinline 5210ecb_noinline
5211void
4426ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4427{ 5213{
4428 ev_run (w->other, EVRUN_NOWAIT); 5214 ev_run (w->other, EVRUN_NOWAIT);
4429} 5215}
4430 5216
4431static void 5217static void
… …
4453 ev_run (EV_A_ EVRUN_NOWAIT); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
4454 } 5240 }
4455 } 5241 }
4456} 5242}
4457 5243
5244#if EV_FORK_ENABLE
4458static void 5245static void
4459embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4460{ 5247{
4461 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));
4462 5249
… …
4469 ev_run (EV_A_ EVRUN_NOWAIT); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
4470 } 5257 }
4471 5258
4472 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
4473} 5260}
5261#endif
4474 5262
4475#if 0 5263#if 0
4476static void 5264static void
4477embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4478{ 5266{
4479 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
4480} 5268}
4481#endif 5269#endif
4482 5270
4483void 5271void
4484ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4485{ 5273{
4486 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
4487 return; 5275 return;
4488 5276
4489 { 5277 {
4490 EV_P = w->other; 5278 EV_P = w->other;
4491 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 ()));
… …
4499 5287
4500 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
4501 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
4502 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
4503 5291
5292#if EV_FORK_ENABLE
4504 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
4505 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
4506 5296
4507 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4508 5298
4509 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
4510 5300
4511 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
4512} 5302}
4513 5303
4514void 5304void
4515ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4516{ 5306{
4517 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
4518 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
4519 return; 5309 return;
4520 5310
4521 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
4522 5312
4523 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
4524 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
4525 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
4526 5318
4527 ev_stop (EV_A_ (W)w); 5319 ev_stop (EV_A_ (W)w);
4528 5320
4529 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
4530} 5322}
4531#endif 5323#endif
4532 5324
4533#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
4534void 5326void
4535ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4536{ 5328{
4537 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
4538 return; 5330 return;
4539 5331
4540 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4541 5333
4542 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
4543 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4544 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
4545 5337
4546 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
4547} 5339}
4548 5340
4549void 5341void
4550ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4551{ 5343{
4552 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
4553 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
4554 return; 5346 return;
4555 5347
4556 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
4557 5349
4558 { 5350 {
… …
4568} 5360}
4569#endif 5361#endif
4570 5362
4571#if EV_CLEANUP_ENABLE 5363#if EV_CLEANUP_ENABLE
4572void 5364void
4573ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4574{ 5366{
4575 if (expect_false (ev_is_active (w))) 5367 if (ecb_expect_false (ev_is_active (w)))
4576 return; 5368 return;
4577 5369
4578 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4579 5371
4580 ev_start (EV_A_ (W)w, ++cleanupcnt); 5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
4581 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4582 cleanups [cleanupcnt - 1] = w; 5374 cleanups [cleanupcnt - 1] = w;
4583 5375
4584 /* cleanup watchers should never keep a refcount on the loop */ 5376 /* cleanup watchers should never keep a refcount on the loop */
4585 ev_unref (EV_A); 5377 ev_unref (EV_A);
4586 EV_FREQUENT_CHECK; 5378 EV_FREQUENT_CHECK;
4587} 5379}
4588 5380
4589void 5381void
4590ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4591{ 5383{
4592 clear_pending (EV_A_ (W)w); 5384 clear_pending (EV_A_ (W)w);
4593 if (expect_false (!ev_is_active (w))) 5385 if (ecb_expect_false (!ev_is_active (w)))
4594 return; 5386 return;
4595 5387
4596 EV_FREQUENT_CHECK; 5388 EV_FREQUENT_CHECK;
4597 ev_ref (EV_A); 5389 ev_ref (EV_A);
4598 5390
… …
4609} 5401}
4610#endif 5402#endif
4611 5403
4612#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
4613void 5405void
4614ev_async_start (EV_P_ ev_async *w) EV_THROW 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4615{ 5407{
4616 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
4617 return; 5409 return;
4618 5410
4619 w->sent = 0; 5411 w->sent = 0;
4620 5412
4621 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
4622 5414
4623 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4624 5416
4625 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
4626 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4627 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
4628 5420
4629 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
4630} 5422}
4631 5423
4632void 5424void
4633ev_async_stop (EV_P_ ev_async *w) EV_THROW 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4634{ 5426{
4635 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
4636 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
4637 return; 5429 return;
4638 5430
4639 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
4640 5432
4641 { 5433 {
… …
4649 5441
4650 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
4651} 5443}
4652 5444
4653void 5445void
4654ev_async_send (EV_P_ ev_async *w) EV_THROW 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4655{ 5447{
4656 w->sent = 1; 5448 w->sent = 1;
4657 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
4658} 5450}
4659#endif 5451#endif
… …
4696 5488
4697 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));
4698} 5490}
4699 5491
4700void 5492void
4701ev_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
4702{ 5494{
4703 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));
4704
4705 if (expect_false (!once))
4706 {
4707 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4708 return;
4709 }
4710 5496
4711 once->cb = cb; 5497 once->cb = cb;
4712 once->arg = arg; 5498 once->arg = arg;
4713 5499
4714 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
4727} 5513}
4728 5514
4729/*****************************************************************************/ 5515/*****************************************************************************/
4730 5516
4731#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
4732void ecb_cold 5518ecb_cold
5519void
4733ev_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
4734{ 5521{
4735 int i, j; 5522 int i, j;
4736 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
4737 5524
4738 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))

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