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Comparing libev/ev.c (file contents):
Revision 1.460 by root, Tue Oct 29 12:53:38 2013 UTC vs.
Revision 1.537 by sf-exg, Sun May 14 19:02:31 2023 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 (©) 2009-2012 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 __x86_64 || _M_AMD64 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")
622 #elif __sparc || __sparc__ 821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
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 ()
867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
869 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
870 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
871 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
872 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 873 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 874 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 875 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 876 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 877 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
670 #elif defined _WIN32 878 #elif defined _WIN32
671 #include <WinNT.h> 879 #include <WinNT.h>
672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h> 882 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier () 883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
677 #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 ()
678 #elif __xlC__ 887 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync () 888 #define ECB_MEMORY_FENCE __sync ()
680 #endif 889 #endif
681#endif 890#endif
682 891
683#ifndef ECB_MEMORY_FENCE 892#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* 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, */
686 /* not just C11 atomics and atomic accesses */ 895 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h> 896 #include <stdatomic.h>
688 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
689 /* any fence other than seq_cst, which isn't very efficient for us. */
690 /* Why that is, we don't know - either the C11 memory model is quite useless */
691 /* for most usages, or gcc and clang have a bug */
692 /* I *currently* lean towards the latter, and inefficiently implement */
693 /* all three of ecb's fences as a seq_cst fence */
694 #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)
695 #endif 900 #endif
696#endif 901#endif
697 902
698#ifndef ECB_MEMORY_FENCE 903#ifndef ECB_MEMORY_FENCE
699 #if !ECB_AVOID_PTHREADS 904 #if !ECB_AVOID_PTHREADS
… …
719 924
720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
722#endif 927#endif
723 928
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
724/*****************************************************************************/ 933/*****************************************************************************/
725 934
726#if __cplusplus 935#if ECB_CPP
727 #define ecb_inline static inline 936 #define ecb_inline static inline
728#elif ECB_GCC_VERSION(2,5) 937#elif ECB_GCC_VERSION(2,5)
729 #define ecb_inline static __inline__ 938 #define ecb_inline static __inline__
730#elif ECB_C99 939#elif ECB_C99
731 #define ecb_inline static inline 940 #define ecb_inline static inline
… …
745 954
746#define ECB_CONCAT_(a, b) a ## b 955#define ECB_CONCAT_(a, b) a ## b
747#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
748#define ECB_STRINGIFY_(a) # a 957#define ECB_STRINGIFY_(a) # a
749#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))
750 960
751#define ecb_function_ ecb_inline 961#define ecb_function_ ecb_inline
752 962
753#if ECB_GCC_VERSION(3,1) 963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
754 #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)
755 #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)
756 #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)
757 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
758#else 987#else
759 #define ecb_attribute(attrlist)
760 #define ecb_is_constant(expr) 0
761 #define ecb_expect(expr,value) (expr)
762 #define ecb_prefetch(addr,rw,locality) 988 #define ecb_prefetch(addr,rw,locality)
763#endif 989#endif
764 990
765/* no emulation for ecb_decltype */ 991/* no emulation for ecb_decltype */
766#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; };
767 #define ecb_decltype(x) __decltype(x) 995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
768#elif ECB_GCC_VERSION(3,0) 996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
769 #define ecb_decltype(x) __typeof(x) 997 #define ecb_decltype(x) __typeof__ (x)
770#endif 998#endif
771 999
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
772#define ecb_noinline ecb_attribute ((__noinline__)) 1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
773#define ecb_unused ecb_attribute ((__unused__)) 1020#define ecb_unused ecb_attribute ((__unused__))
774#define ecb_const ecb_attribute ((__const__)) 1021#define ecb_const ecb_attribute ((__const__))
775#define ecb_pure ecb_attribute ((__pure__)) 1022#define ecb_pure ecb_attribute ((__pure__))
776 1023
777#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 */
778 #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)
779#else 1032#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif 1034#endif
782 1035
783#if ECB_GCC_VERSION(4,3) 1036#if ECB_GCC_VERSION(4,3)
… …
798/* for compatibility to the rest of the world */ 1051/* for compatibility to the rest of the world */
799#define ecb_likely(expr) ecb_expect_true (expr) 1052#define ecb_likely(expr) ecb_expect_true (expr)
800#define ecb_unlikely(expr) ecb_expect_false (expr) 1053#define ecb_unlikely(expr) ecb_expect_false (expr)
801 1054
802/* count trailing zero bits and count # of one bits */ 1055/* count trailing zero bits and count # of one bits */
803#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))
804 /* 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 */
805 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
806 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
807 #define ecb_ctz32(x) __builtin_ctz (x) 1063 #define ecb_ctz32(x) __builtin_ctz (x)
808 #define ecb_ctz64(x) __builtin_ctzll (x) 1064 #define ecb_ctz64(x) __builtin_ctzll (x)
809 #define ecb_popcount32(x) __builtin_popcount (x) 1065 #define ecb_popcount32(x) __builtin_popcount (x)
810 /* no popcountll */ 1066 /* no popcountll */
811#else 1067#else
812 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
813 ecb_function_ int 1069 ecb_function_ ecb_const int
814 ecb_ctz32 (uint32_t x) 1070 ecb_ctz32 (uint32_t x)
815 { 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
816 int r = 0; 1077 int r = 0;
817 1078
818 x &= ~x + 1; /* this isolates the lowest bit */ 1079 x &= ~x + 1; /* this isolates the lowest bit */
819 1080
820#if ECB_branchless_on_i386 1081#if ECB_branchless_on_i386
… …
830 if (x & 0xff00ff00) r += 8; 1091 if (x & 0xff00ff00) r += 8;
831 if (x & 0xffff0000) r += 16; 1092 if (x & 0xffff0000) r += 16;
832#endif 1093#endif
833 1094
834 return r; 1095 return r;
1096#endif
835 } 1097 }
836 1098
837 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
838 ecb_function_ int 1100 ecb_function_ ecb_const int
839 ecb_ctz64 (uint64_t x) 1101 ecb_ctz64 (uint64_t x)
840 { 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
841 int shift = x & 0xffffffffU ? 0 : 32; 1108 int shift = x & 0xffffffff ? 0 : 32;
842 return ecb_ctz32 (x >> shift) + shift; 1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
843 } 1111 }
844 1112
845 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
846 ecb_function_ int 1114 ecb_function_ ecb_const int
847 ecb_popcount32 (uint32_t x) 1115 ecb_popcount32 (uint32_t x)
848 { 1116 {
849 x -= (x >> 1) & 0x55555555; 1117 x -= (x >> 1) & 0x55555555;
850 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
851 x = ((x >> 4) + x) & 0x0f0f0f0f; 1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
852 x *= 0x01010101; 1120 x *= 0x01010101;
853 1121
854 return x >> 24; 1122 return x >> 24;
855 } 1123 }
856 1124
857 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
858 ecb_function_ int ecb_ld32 (uint32_t x) 1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
859 { 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
860 int r = 0; 1133 int r = 0;
861 1134
862 if (x >> 16) { x >>= 16; r += 16; } 1135 if (x >> 16) { x >>= 16; r += 16; }
863 if (x >> 8) { x >>= 8; r += 8; } 1136 if (x >> 8) { x >>= 8; r += 8; }
864 if (x >> 4) { x >>= 4; r += 4; } 1137 if (x >> 4) { x >>= 4; r += 4; }
865 if (x >> 2) { x >>= 2; r += 2; } 1138 if (x >> 2) { x >>= 2; r += 2; }
866 if (x >> 1) { r += 1; } 1139 if (x >> 1) { r += 1; }
867 1140
868 return r; 1141 return r;
1142#endif
869 } 1143 }
870 1144
871 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
872 ecb_function_ int ecb_ld64 (uint64_t x) 1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
873 { 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
874 int r = 0; 1153 int r = 0;
875 1154
876 if (x >> 32) { x >>= 32; r += 32; } 1155 if (x >> 32) { x >>= 32; r += 32; }
877 1156
878 return r + ecb_ld32 (x); 1157 return r + ecb_ld32 (x);
1158#endif
879 } 1159 }
880#endif 1160#endif
881 1161
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
883ecb_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)); }
884ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
885ecb_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)); }
886 1166
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
889{ 1169{
890 return ( (x * 0x0802U & 0x22110U) 1170 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892} 1172}
893 1173
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
896{ 1176{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8); 1180 x = ( x >> 8 ) | ( x << 8);
901 1181
902 return x; 1182 return x;
903} 1183}
904 1184
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
907{ 1187{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
914 return x; 1194 return x;
915} 1195}
916 1196
917/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
918/* so for this version we are lazy */ 1198/* so for this version we are lazy */
919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
920ecb_function_ int 1200ecb_function_ ecb_const int
921ecb_popcount64 (uint64_t x) 1201ecb_popcount64 (uint64_t x)
922{ 1202{
923 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
924} 1204}
925 1205
926ecb_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);
927ecb_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);
928ecb_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);
929ecb_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);
930ecb_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);
931ecb_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);
932ecb_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);
933ecb_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);
934 1214
935ecb_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); }
936ecb_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); }
937ecb_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); }
938ecb_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); }
939ecb_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); }
940ecb_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); }
941ecb_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); }
942ecb_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); }
943 1223
944#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
945 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
946 #define ecb_bswap32(x) __builtin_bswap32 (x) 1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
947 #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)))
948#else 1275#else
949 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
950 ecb_function_ uint16_t 1277 ecb_function_ ecb_const uint16_t
951 ecb_bswap16 (uint16_t x) 1278 ecb_bswap16 (uint16_t x)
952 { 1279 {
953 return ecb_rotl16 (x, 8); 1280 return ecb_rotl16 (x, 8);
954 } 1281 }
955 1282
956 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
957 ecb_function_ uint32_t 1284 ecb_function_ ecb_const uint32_t
958 ecb_bswap32 (uint32_t x) 1285 ecb_bswap32 (uint32_t x)
959 { 1286 {
960 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
961 } 1288 }
962 1289
963 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
964 ecb_function_ uint64_t 1291 ecb_function_ ecb_const uint64_t
965 ecb_bswap64 (uint64_t x) 1292 ecb_bswap64 (uint64_t x)
966 { 1293 {
967 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
968 } 1295 }
969#endif 1296#endif
970 1297
971#if ECB_GCC_VERSION(4,5) 1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
972 #define ecb_unreachable() __builtin_unreachable () 1299 #define ecb_unreachable() __builtin_unreachable ()
973#else 1300#else
974 /* 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 :/ */
975 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
976 ecb_inline void ecb_unreachable (void) { } 1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
977#endif 1304#endif
978 1305
979/* try to tell the compiler that some condition is definitely true */ 1306/* try to tell the compiler that some condition is definitely true */
980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
981 1308
982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
983ecb_inline unsigned char 1310ecb_inline ecb_const uint32_t
984ecb_byteorder_helper (void) 1311ecb_byteorder_helper (void)
985{ 1312{
986 /* the union code still generates code under pressure in gcc, */ 1313 /* the union code still generates code under pressure in gcc, */
987 /* but less than using pointers, and always seems to */ 1314 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */ 1315 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */ 1316 /* the reason why we have this horrible preprocessor mess */
990 /* 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 */
991 /* or when using a recent enough gcc version (>= 4.6) */ 1318 /* or when using a recent enough gcc version (>= 4.6) */
992#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
993 return 0x44;
994#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
995 return 0x44; 1322 return 0x44332211;
996#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
997 return 0x11; 1326 return 0x11223344;
998#else 1327#else
999 union 1328 union
1000 { 1329 {
1330 uint8_t c[4];
1001 uint32_t i; 1331 uint32_t u;
1002 uint8_t c;
1003 } u = { 0x11223344 }; 1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1004 return u.c; 1333 return u.u;
1005#endif 1334#endif
1006} 1335}
1007 1336
1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1009ecb_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; }
1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1011ecb_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/*****************************************************************************/
1012 1413
1013#if ECB_GCC_VERSION(3,0) || ECB_C99 1414#if ECB_GCC_VERSION(3,0) || ECB_C99
1014 #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))
1015#else 1416#else
1016 #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)))
1017#endif 1418#endif
1018 1419
1019#if __cplusplus 1420#if ECB_CPP
1020 template<typename T> 1421 template<typename T>
1021 static inline T ecb_div_rd (T val, T div) 1422 static inline T ecb_div_rd (T val, T div)
1022 { 1423 {
1023 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1024 } 1425 }
… …
1041 } 1442 }
1042#else 1443#else
1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1044#endif 1445#endif
1045 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
1046/*******************************************************************************/ 1545/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048 1547
1049/* basically, everything uses "ieee pure-endian" floating point numbers */ 1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \ 1550#if 0 \
1052 || __i386 || __i386__ \ 1551 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1552 || ECB_GCC_AMD64 \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \ 1554 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \ 1555 || defined __mips__ \
1058 || defined __alpha__ \ 1556 || defined __alpha__ \
1059 || defined __hppa__ \ 1557 || defined __hppa__ \
1060 || defined __ia64__ \ 1558 || defined __ia64__ \
1061 || defined __m68k__ \ 1559 || defined __m68k__ \
1062 || defined __m88k__ \ 1560 || defined __m88k__ \
1063 || defined __sh__ \ 1561 || defined __sh__ \
1064 || 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__
1065 #define ECB_STDFP 1 1565 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */
1067#else 1566#else
1068 #define ECB_STDFP 0 1567 #define ECB_STDFP 0
1069#endif 1568#endif
1070 1569
1071#ifndef ECB_NO_LIBM 1570#ifndef ECB_NO_LIBM
1072 1571
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ 1572 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074 1573
1574 /* only the oldest of old doesn't have this one. solaris. */
1575 #ifdef INFINITY
1576 #define ECB_INFINITY INFINITY
1577 #else
1578 #define ECB_INFINITY HUGE_VAL
1579 #endif
1580
1075 #ifdef NEN 1581 #ifdef NAN
1076 #define ECB_NAN NAN 1582 #define ECB_NAN NAN
1077 #else 1583 #else
1078 #define ECB_NAN INFINITY 1584 #define ECB_NAN ECB_INFINITY
1079 #endif 1585 #endif
1080 1586
1081 /* converts an ieee half/binary16 to a float */ 1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1083 ecb_function_ float 1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1084 ecb_binary16_to_float (uint16_t x) 1590 #else
1085 { 1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1086 int e = (x >> 10) & 0x1f; 1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1087 int m = x & 0x3ff; 1593 #endif
1088 float r;
1089
1090 if (!e ) r = ldexpf (m , -24);
1091 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1092 else if (m ) r = ECB_NAN;
1093 else r = INFINITY;
1094
1095 return x & 0x8000 ? -r : r;
1096 }
1097 1594
1098 /* convert a float to ieee single/binary32 */ 1595 /* convert a float to ieee single/binary32 */
1099 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);
1100 ecb_function_ uint32_t 1597 ecb_function_ ecb_const uint32_t
1101 ecb_float_to_binary32 (float x) 1598 ecb_float_to_binary32 (float x)
1102 { 1599 {
1103 uint32_t r; 1600 uint32_t r;
1104 1601
1105 #if ECB_STDFP 1602 #if ECB_STDFP
… …
1112 if (x == 0e0f ) return 0x00000000U; 1609 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU; 1612 if (x != x ) return 0x7fbfffffU;
1116 1613
1117 m = frexpf (x, &e) * 0x1000000U; 1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1118 1615
1119 r = m & 0x80000000U; 1616 r = m & 0x80000000U;
1120 1617
1121 if (r) 1618 if (r)
1122 m = -m; 1619 m = -m;
… …
1134 1631
1135 return r; 1632 return r;
1136 } 1633 }
1137 1634
1138 /* converts an ieee single/binary32 to a float */ 1635 /* converts an ieee single/binary32 to a float */
1139 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);
1140 ecb_function_ float 1637 ecb_function_ ecb_const float
1141 ecb_binary32_to_float (uint32_t x) 1638 ecb_binary32_to_float (uint32_t x)
1142 { 1639 {
1143 float r; 1640 float r;
1144 1641
1145 #if ECB_STDFP 1642 #if ECB_STDFP
… …
1155 x |= 0x800000U; 1652 x |= 0x800000U;
1156 else 1653 else
1157 e = 1; 1654 e = 1;
1158 1655
1159 /* 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 */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1161 1658
1162 r = neg ? -r : r; 1659 r = neg ? -r : r;
1163 #endif 1660 #endif
1164 1661
1165 return r; 1662 return r;
1166 } 1663 }
1167 1664
1168 /* convert a double to ieee double/binary64 */ 1665 /* convert a double to ieee double/binary64 */
1169 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);
1170 ecb_function_ uint64_t 1667 ecb_function_ ecb_const uint64_t
1171 ecb_double_to_binary64 (double x) 1668 ecb_double_to_binary64 (double x)
1172 { 1669 {
1173 uint64_t r; 1670 uint64_t r;
1174 1671
1175 #if ECB_STDFP 1672 #if ECB_STDFP
… …
1204 1701
1205 return r; 1702 return r;
1206 } 1703 }
1207 1704
1208 /* converts an ieee double/binary64 to a double */ 1705 /* converts an ieee double/binary64 to a double */
1209 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);
1210 ecb_function_ double 1707 ecb_function_ ecb_const double
1211 ecb_binary64_to_double (uint64_t x) 1708 ecb_binary64_to_double (uint64_t x)
1212 { 1709 {
1213 double r; 1710 double r;
1214 1711
1215 #if ECB_STDFP 1712 #if ECB_STDFP
… …
1233 #endif 1730 #endif
1234 1731
1235 return r; 1732 return r;
1236 } 1733 }
1237 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
1238#endif 1751#endif
1239 1752
1240#endif 1753#endif
1241 1754
1242/* ECB.H END */ 1755/* ECB.H END */
1243 1756
1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1245/* 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
1246 * 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
1247 * 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
1248 * libev, in which cases the memory fences become nops. 1761 * libev, in which cases the memory fences become nops.
1249 * alternatively, you can remove this #error and link against libpthread, 1762 * alternatively, you can remove this #error and link against libpthread,
1250 * which will then provide the memory fences. 1763 * which will then provide the memory fences.
1251 */ 1764 */
1252# error "memory fences not defined for your architecture, please report" 1765# error "memory fences not defined for your architecture, please report"
… …
1256# define ECB_MEMORY_FENCE do { } while (0) 1769# define ECB_MEMORY_FENCE do { } while (0)
1257# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1258# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1259#endif 1772#endif
1260 1773
1261#define expect_false(cond) ecb_expect_false (cond)
1262#define expect_true(cond) ecb_expect_true (cond)
1263#define noinline ecb_noinline
1264
1265#define inline_size ecb_inline 1774#define inline_size ecb_inline
1266 1775
1267#if EV_FEATURE_CODE 1776#if EV_FEATURE_CODE
1268# define inline_speed ecb_inline 1777# define inline_speed ecb_inline
1269#else 1778#else
1270# define inline_speed static noinline 1779# define inline_speed ecb_noinline static
1271#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/*****************************************************************************/
1272 1847
1273#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1274 1849
1275#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
1276# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
1277#else 1852#else
1278# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1279#endif 1854#endif
1280 1855
1281#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
1282#define EMPTY2(a,b) /* used to suppress some warnings */
1283 1857
1284typedef ev_watcher *W; 1858typedef ev_watcher *W;
1285typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
1286typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
1287 1861
… …
1312# include "ev_win32.c" 1886# include "ev_win32.c"
1313#endif 1887#endif
1314 1888
1315/*****************************************************************************/ 1889/*****************************************************************************/
1316 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1317/* define a suitable floor function (only used by periodics atm) */ 1895/* define a suitable floor function (only used by periodics atm) */
1318 1896
1319#if EV_USE_FLOOR 1897#if EV_USE_FLOOR
1320# include <math.h> 1898# include <math.h>
1321# define ev_floor(v) floor (v) 1899# define ev_floor(v) floor (v)
1322#else 1900#else
1323 1901
1324#include <float.h> 1902#include <float.h>
1325 1903
1326/* 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
1327static ev_tstamp noinline 1906static ev_tstamp
1328ev_floor (ev_tstamp v) 1907ev_floor (ev_tstamp v)
1329{ 1908{
1330 /* the choice of shift factor is not terribly important */ 1909 /* the choice of shift factor is not terribly important */
1331#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1332 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1333#else 1912#else
1334 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1335#endif 1914#endif
1336 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
1337 /* argument too large for an unsigned long? */ 1924 /* argument too large for an unsigned long? then reduce it */
1338 if (expect_false (v >= shift)) 1925 if (ecb_expect_false (v >= shift))
1339 { 1926 {
1340 ev_tstamp f; 1927 ev_tstamp f;
1341 1928
1342 if (v == v - 1.) 1929 if (v == v - 1.)
1343 return v; /* very large number */ 1930 return v; /* very large numbers are assumed to be integer */
1344 1931
1345 f = shift * ev_floor (v * (1. / shift)); 1932 f = shift * ev_floor (v * (1. / shift));
1346 return f + ev_floor (v - f); 1933 return f + ev_floor (v - f);
1347 } 1934 }
1348 1935
1349 /* special treatment for negative args? */
1350 if (expect_false (v < 0.))
1351 {
1352 ev_tstamp f = -ev_floor (-v);
1353
1354 return f - (f == v ? 0 : 1);
1355 }
1356
1357 /* fits into an unsigned long */ 1936 /* fits into an unsigned long */
1358 return (unsigned long)v; 1937 return (unsigned long)v;
1359} 1938}
1360 1939
1361#endif 1940#endif
… …
1364 1943
1365#ifdef __linux 1944#ifdef __linux
1366# include <sys/utsname.h> 1945# include <sys/utsname.h>
1367#endif 1946#endif
1368 1947
1369static unsigned int noinline ecb_cold 1948ecb_noinline ecb_cold
1949static unsigned int
1370ev_linux_version (void) 1950ev_linux_version (void)
1371{ 1951{
1372#ifdef __linux 1952#ifdef __linux
1373 unsigned int v = 0; 1953 unsigned int v = 0;
1374 struct utsname buf; 1954 struct utsname buf;
… …
1403} 1983}
1404 1984
1405/*****************************************************************************/ 1985/*****************************************************************************/
1406 1986
1407#if EV_AVOID_STDIO 1987#if EV_AVOID_STDIO
1408static void noinline ecb_cold 1988ecb_noinline ecb_cold
1989static void
1409ev_printerr (const char *msg) 1990ev_printerr (const char *msg)
1410{ 1991{
1411 write (STDERR_FILENO, msg, strlen (msg)); 1992 write (STDERR_FILENO, msg, strlen (msg));
1412} 1993}
1413#endif 1994#endif
1414 1995
1415static void (*syserr_cb)(const char *msg) EV_THROW; 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1416 1997
1417void ecb_cold 1998ecb_cold
1999void
1418ev_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
1419{ 2001{
1420 syserr_cb = cb; 2002 syserr_cb = cb;
1421} 2003}
1422 2004
1423static void noinline ecb_cold 2005ecb_noinline ecb_cold
2006static void
1424ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
1425{ 2008{
1426 if (!msg) 2009 if (!msg)
1427 msg = "(libev) system error"; 2010 msg = "(libev) system error";
1428 2011
… …
1441 abort (); 2024 abort ();
1442 } 2025 }
1443} 2026}
1444 2027
1445static void * 2028static void *
1446ev_realloc_emul (void *ptr, long size) EV_THROW 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1447{ 2030{
1448 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
1449 * 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
1450 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it, 2034 * recently, also (at least) fedora and debian started breaking it,
… …
1457 2040
1458 free (ptr); 2041 free (ptr);
1459 return 0; 2042 return 0;
1460} 2043}
1461 2044
1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1463 2046
1464void ecb_cold 2047ecb_cold
2048void
1465ev_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
1466{ 2050{
1467 alloc = cb; 2051 alloc = cb;
1468} 2052}
1469 2053
1470inline_speed void * 2054inline_speed void *
… …
1497typedef struct 2081typedef struct
1498{ 2082{
1499 WL head; 2083 WL head;
1500 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
1501 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) */
1502 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 */
1503 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
1504#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
1505 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
1506#endif 2090#endif
1507#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1508 SOCKET handle; 2092 SOCKET handle;
… …
1562 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
1563 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 */
1564 2148
1565#else 2149#else
1566 2150
1567 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 */
1568 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
1569 #include "ev_vars.h" 2153 #include "ev_vars.h"
1570 #undef VAR 2154 #undef VAR
1571 2155
1572 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
1573 2157
1574#endif 2158#endif
1575 2159
1576#if EV_FEATURE_API 2160#if EV_FEATURE_API
1577# 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)
1578# 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)
1579# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
1580#else 2164#else
1581# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
1582# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
1583# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1587 2171
1588/*****************************************************************************/ 2172/*****************************************************************************/
1589 2173
1590#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
1591ev_tstamp 2175ev_tstamp
1592ev_time (void) EV_THROW 2176ev_time (void) EV_NOEXCEPT
1593{ 2177{
1594#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
1595 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
1596 { 2180 {
1597 struct timespec ts; 2181 struct timespec ts;
1598 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
1599 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
1600 } 2184 }
1601#endif 2185#endif
1602 2186
2187 {
1603 struct timeval tv; 2188 struct timeval tv;
1604 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
1605 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
1606} 2192}
1607#endif 2193#endif
1608 2194
1609inline_size ev_tstamp 2195inline_size ev_tstamp
1610get_clock (void) 2196get_clock (void)
1611{ 2197{
1612#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
1613 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
1614 { 2200 {
1615 struct timespec ts; 2201 struct timespec ts;
1616 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
1617 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
1618 } 2204 }
1619#endif 2205#endif
1620 2206
1621 return ev_time (); 2207 return ev_time ();
1622} 2208}
1623 2209
1624#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
1625ev_tstamp 2211ev_tstamp
1626ev_now (EV_P) EV_THROW 2212ev_now (EV_P) EV_NOEXCEPT
1627{ 2213{
1628 return ev_rt_now; 2214 return ev_rt_now;
1629} 2215}
1630#endif 2216#endif
1631 2217
1632void 2218void
1633ev_sleep (ev_tstamp delay) EV_THROW 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1634{ 2220{
1635 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
1636 { 2222 {
1637#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
1638 struct timespec ts; 2224 struct timespec ts;
1639 2225
1640 EV_TS_SET (ts, delay); 2226 EV_TS_SET (ts, delay);
1641 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
1642#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) */
1643 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1644#else 2232#else
1645 struct timeval tv; 2233 struct timeval tv;
1646 2234
1647 /* 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 */
1648 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1678 } 2266 }
1679 2267
1680 return ncur; 2268 return ncur;
1681} 2269}
1682 2270
1683static void * noinline ecb_cold 2271ecb_noinline ecb_cold
2272static void *
1684array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
1685{ 2274{
1686 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
1687 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
1688} 2277}
1689 2278
2279#define array_needsize_noinit(base,offset,count)
2280
1690#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
1691 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1692 2283
1693#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
1694 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
1695 { \ 2286 { \
1696 int ecb_unused ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
1697 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
1698 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
1699 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
1700 } 2291 }
1701 2292
1702#if 0 2293#if 0
1703#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
1704 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1713 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
1714 2305
1715/*****************************************************************************/ 2306/*****************************************************************************/
1716 2307
1717/* dummy callback for pending events */ 2308/* dummy callback for pending events */
1718static void noinline 2309ecb_noinline
2310static void
1719pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
1720{ 2312{
1721} 2313}
1722 2314
1723void noinline 2315ecb_noinline
2316void
1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1725{ 2318{
1726 W w_ = (W)w; 2319 W w_ = (W)w;
1727 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
1728 2321
1729 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
1730 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
1731 else 2324 else
1732 { 2325 {
1733 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1735 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
1736 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
1737 } 2330 }
1738 2331
1739 pendingpri = NUMPRI - 1; 2332 pendingpri = NUMPRI - 1;
1740} 2333}
1741 2334
1742inline_speed void 2335inline_speed void
1743feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
1744{ 2337{
1745 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1746 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
1747} 2340}
1748 2341
1749inline_size void 2342inline_size void
1750feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
1785inline_speed void 2378inline_speed void
1786fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
1787{ 2380{
1788 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
1789 2382
1790 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
1791 fd_event_nocheck (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
1792} 2385}
1793 2386
1794void 2387void
1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1796{ 2389{
1797 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
1798 fd_event_nocheck (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
1799} 2392}
1800 2393
… …
1803inline_size void 2396inline_size void
1804fd_reify (EV_P) 2397fd_reify (EV_P)
1805{ 2398{
1806 int i; 2399 int i;
1807 2400
2401 /* most backends do not modify the fdchanges list in backend_modify.
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
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
1810 { 2415 {
1811 int fd = fdchanges [i]; 2416 int fd = fdchanges [i];
1812 ANFD *anfd = anfds + fd; 2417 ANFD *anfd = anfds + fd;
1813 2418
1814 if (anfd->reify & EV__IOFDSET && anfd->head) 2419 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1828 } 2433 }
1829 } 2434 }
1830 } 2435 }
1831#endif 2436#endif
1832 2437
1833 for (i = 0; i < fdchangecnt; ++i) 2438 for (i = 0; i < changecnt; ++i)
1834 { 2439 {
1835 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
1836 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
1837 ev_io *w; 2442 ev_io *w;
1838 2443
1839 unsigned char o_events = anfd->events; 2444 unsigned char o_events = anfd->events;
1840 unsigned char o_reify = anfd->reify; 2445 unsigned char o_reify = anfd->reify;
1841 2446
1842 anfd->reify = 0; 2447 anfd->reify = 0;
1843 2448
1844 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1845 { 2450 {
1846 anfd->events = 0; 2451 anfd->events = 0;
1847 2452
1848 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)
1849 anfd->events |= (unsigned char)w->events; 2454 anfd->events |= (unsigned char)w->events;
… …
1854 2459
1855 if (o_reify & EV__IOFDSET) 2460 if (o_reify & EV__IOFDSET)
1856 backend_modify (EV_A_ fd, o_events, anfd->events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
1857 } 2462 }
1858 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
1859 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
1860} 2472}
1861 2473
1862/* something about the given fd changed */ 2474/* something about the given fd changed */
1863inline_size void 2475inline_size
2476void
1864fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
1865{ 2478{
1866 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
1867 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
1868 2481
1869 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
1870 { 2483 {
1871 ++fdchangecnt; 2484 ++fdchangecnt;
1872 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1873 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
1874 } 2487 }
1875} 2488}
1876 2489
1877/* 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 */
1878inline_speed void ecb_cold 2491inline_speed ecb_cold void
1879fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
1880{ 2493{
1881 ev_io *w; 2494 ev_io *w;
1882 2495
1883 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
1886 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);
1887 } 2500 }
1888} 2501}
1889 2502
1890/* check whether the given fd is actually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
1891inline_size int ecb_cold 2504inline_size ecb_cold int
1892fd_valid (int fd) 2505fd_valid (int fd)
1893{ 2506{
1894#ifdef _WIN32 2507#ifdef _WIN32
1895 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1896#else 2509#else
1897 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
1898#endif 2511#endif
1899} 2512}
1900 2513
1901/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
1902static void noinline ecb_cold 2515ecb_noinline ecb_cold
2516static void
1903fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
1904{ 2518{
1905 int fd; 2519 int fd;
1906 2520
1907 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
1909 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
1910 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
1911} 2525}
1912 2526
1913/* 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 */
1914static void noinline ecb_cold 2528ecb_noinline ecb_cold
2529static void
1915fd_enomem (EV_P) 2530fd_enomem (EV_P)
1916{ 2531{
1917 int fd; 2532 int fd;
1918 2533
1919 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
1923 break; 2538 break;
1924 } 2539 }
1925} 2540}
1926 2541
1927/* 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 */
1928static void noinline 2543ecb_noinline
2544static void
1929fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1930{ 2546{
1931 int fd; 2547 int fd;
1932 2548
1933 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
1986 ev_tstamp minat; 2602 ev_tstamp minat;
1987 ANHE *minpos; 2603 ANHE *minpos;
1988 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1989 2605
1990 /* find minimum child */ 2606 /* find minimum child */
1991 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
1992 { 2608 {
1993 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1994 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));
1995 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));
1996 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));
1997 } 2613 }
1998 else if (pos < E) 2614 else if (pos < E)
1999 { 2615 {
2000 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2001 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));
2002 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));
2003 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));
2004 } 2620 }
2005 else 2621 else
2006 break; 2622 break;
2007 2623
2008 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
2016 2632
2017 heap [k] = he; 2633 heap [k] = he;
2018 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
2019} 2635}
2020 2636
2021#else /* 4HEAP */ 2637#else /* not 4HEAP */
2022 2638
2023#define HEAP0 1 2639#define HEAP0 1
2024#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
2025#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
2026 2642
… …
2098 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
2099} 2715}
2100 2716
2101/*****************************************************************************/ 2717/*****************************************************************************/
2102 2718
2103/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
2104typedef struct 2720typedef struct
2105{ 2721{
2106 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
2107#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
2108 EV_P; 2724 EV_P;
… …
2114 2730
2115/*****************************************************************************/ 2731/*****************************************************************************/
2116 2732
2117#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2118 2734
2119static void noinline ecb_cold 2735ecb_noinline ecb_cold
2736static void
2120evpipe_init (EV_P) 2737evpipe_init (EV_P)
2121{ 2738{
2122 if (!ev_is_active (&pipe_w)) 2739 if (!ev_is_active (&pipe_w))
2123 { 2740 {
2124 int fds [2]; 2741 int fds [2];
… …
2164inline_speed void 2781inline_speed void
2165evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2166{ 2783{
2167 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 */
2168 2785
2169 if (expect_true (*flag)) 2786 if (ecb_expect_true (*flag))
2170 return; 2787 return;
2171 2788
2172 *flag = 1; 2789 *flag = 1;
2173 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 */
2174 2791
… …
2195#endif 2812#endif
2196 { 2813 {
2197#ifdef _WIN32 2814#ifdef _WIN32
2198 WSABUF buf; 2815 WSABUF buf;
2199 DWORD sent; 2816 DWORD sent;
2200 buf.buf = &buf; 2817 buf.buf = (char *)&buf;
2201 buf.len = 1; 2818 buf.len = 1;
2202 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);
2203#else 2820#else
2204 write (evpipe [1], &(evpipe [1]), 1); 2821 write (evpipe [1], &(evpipe [1]), 1);
2205#endif 2822#endif
… …
2251 sig_pending = 0; 2868 sig_pending = 0;
2252 2869
2253 ECB_MEMORY_FENCE; 2870 ECB_MEMORY_FENCE;
2254 2871
2255 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
2256 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
2257 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
2258 } 2875 }
2259#endif 2876#endif
2260 2877
2261#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
… …
2277} 2894}
2278 2895
2279/*****************************************************************************/ 2896/*****************************************************************************/
2280 2897
2281void 2898void
2282ev_feed_signal (int signum) EV_THROW 2899ev_feed_signal (int signum) EV_NOEXCEPT
2283{ 2900{
2284#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2285 EV_P; 2902 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE; 2903 ECB_MEMORY_FENCE_ACQUIRE;
2287 EV_A = signals [signum - 1].loop; 2904 EV_A = signals [signum - 1].loop;
… …
2302#endif 2919#endif
2303 2920
2304 ev_feed_signal (signum); 2921 ev_feed_signal (signum);
2305} 2922}
2306 2923
2307void noinline 2924ecb_noinline
2925void
2308ev_feed_signal_event (EV_P_ int signum) EV_THROW 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2309{ 2927{
2310 WL w; 2928 WL w;
2311 2929
2312 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2313 return; 2931 return;
2314 2932
2315 --signum; 2933 --signum;
2316 2934
2317#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
2318 /* 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 */
2319 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
2320 2938
2321 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
2322 return; 2940 return;
2323#endif 2941#endif
2324 2942
2325 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE; 2944 ECB_MEMORY_FENCE_RELEASE;
… …
2410 3028
2411#endif 3029#endif
2412 3030
2413/*****************************************************************************/ 3031/*****************************************************************************/
2414 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
2415#if EV_USE_IOCP 3084#if EV_USE_IOCP
2416# include "ev_iocp.c" 3085# include "ev_iocp.c"
2417#endif 3086#endif
2418#if EV_USE_PORT 3087#if EV_USE_PORT
2419# include "ev_port.c" 3088# include "ev_port.c"
… …
2422# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
2423#endif 3092#endif
2424#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
2425# include "ev_epoll.c" 3094# include "ev_epoll.c"
2426#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
2427#if EV_USE_POLL 3102#if EV_USE_POLL
2428# include "ev_poll.c" 3103# include "ev_poll.c"
2429#endif 3104#endif
2430#if EV_USE_SELECT 3105#if EV_USE_SELECT
2431# include "ev_select.c" 3106# include "ev_select.c"
2432#endif 3107#endif
2433 3108
2434int ecb_cold 3109ecb_cold int
2435ev_version_major (void) EV_THROW 3110ev_version_major (void) EV_NOEXCEPT
2436{ 3111{
2437 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
2438} 3113}
2439 3114
2440int ecb_cold 3115ecb_cold int
2441ev_version_minor (void) EV_THROW 3116ev_version_minor (void) EV_NOEXCEPT
2442{ 3117{
2443 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
2444} 3119}
2445 3120
2446/* 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 */
2447int inline_size ecb_cold 3122inline_size ecb_cold int
2448enable_secure (void) 3123enable_secure (void)
2449{ 3124{
2450#ifdef _WIN32 3125#ifdef _WIN32
2451 return 0; 3126 return 0;
2452#else 3127#else
2453 return getuid () != geteuid () 3128 return getuid () != geteuid ()
2454 || getgid () != getegid (); 3129 || getgid () != getegid ();
2455#endif 3130#endif
2456} 3131}
2457 3132
2458unsigned int ecb_cold 3133ecb_cold
3134unsigned int
2459ev_supported_backends (void) EV_THROW 3135ev_supported_backends (void) EV_NOEXCEPT
2460{ 3136{
2461 unsigned int flags = 0; 3137 unsigned int flags = 0;
2462 3138
2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2465 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2466 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2467 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2468 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
2469 return flags; 3147 return flags;
2470} 3148}
2471 3149
2472unsigned int ecb_cold 3150ecb_cold
3151unsigned int
2473ev_recommended_backends (void) EV_THROW 3152ev_recommended_backends (void) EV_NOEXCEPT
2474{ 3153{
2475 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
2476 3155
2477#ifndef __NetBSD__ 3156#ifndef __NetBSD__
2478 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
2486#endif 3165#endif
2487#ifdef __FreeBSD__ 3166#ifdef __FreeBSD__
2488 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) */
2489#endif 3168#endif
2490 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
2491 return flags; 3179 return flags;
2492} 3180}
2493 3181
2494unsigned int ecb_cold 3182ecb_cold
3183unsigned int
2495ev_embeddable_backends (void) EV_THROW 3184ev_embeddable_backends (void) EV_NOEXCEPT
2496{ 3185{
2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2498 3187
2499 /* 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 */
2500 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 */
2501 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
2502 3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3193
2503 return flags; 3194 return flags;
2504} 3195}
2505 3196
2506unsigned int 3197unsigned int
2507ev_backend (EV_P) EV_THROW 3198ev_backend (EV_P) EV_NOEXCEPT
2508{ 3199{
2509 return backend; 3200 return backend;
2510} 3201}
2511 3202
2512#if EV_FEATURE_API 3203#if EV_FEATURE_API
2513unsigned int 3204unsigned int
2514ev_iteration (EV_P) EV_THROW 3205ev_iteration (EV_P) EV_NOEXCEPT
2515{ 3206{
2516 return loop_count; 3207 return loop_count;
2517} 3208}
2518 3209
2519unsigned int 3210unsigned int
2520ev_depth (EV_P) EV_THROW 3211ev_depth (EV_P) EV_NOEXCEPT
2521{ 3212{
2522 return loop_depth; 3213 return loop_depth;
2523} 3214}
2524 3215
2525void 3216void
2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2527{ 3218{
2528 io_blocktime = interval; 3219 io_blocktime = interval;
2529} 3220}
2530 3221
2531void 3222void
2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2533{ 3224{
2534 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
2535} 3226}
2536 3227
2537void 3228void
2538ev_set_userdata (EV_P_ void *data) EV_THROW 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2539{ 3230{
2540 userdata = data; 3231 userdata = data;
2541} 3232}
2542 3233
2543void * 3234void *
2544ev_userdata (EV_P) EV_THROW 3235ev_userdata (EV_P) EV_NOEXCEPT
2545{ 3236{
2546 return userdata; 3237 return userdata;
2547} 3238}
2548 3239
2549void 3240void
2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2551{ 3242{
2552 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
2553} 3244}
2554 3245
2555void 3246void
2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2557{ 3248{
2558 release_cb = release; 3249 release_cb = release;
2559 acquire_cb = acquire; 3250 acquire_cb = acquire;
2560} 3251}
2561#endif 3252#endif
2562 3253
2563/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
2564static void noinline ecb_cold 3255ecb_noinline ecb_cold
3256static void
2565loop_init (EV_P_ unsigned int flags) EV_THROW 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2566{ 3258{
2567 if (!backend) 3259 if (!backend)
2568 { 3260 {
2569 origflags = flags; 3261 origflags = flags;
2570 3262
… …
2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2624#endif 3316#endif
2625#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2627#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
2628 3323
2629 if (!(flags & EVBACKEND_MASK)) 3324 if (!(flags & EVBACKEND_MASK))
2630 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
2631 3326
2632#if EV_USE_IOCP 3327#if EV_USE_IOCP
2633 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2634#endif 3329#endif
2635#if EV_USE_PORT 3330#if EV_USE_PORT
2636 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2637#endif 3332#endif
2638#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
2639 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);
2640#endif 3341#endif
2641#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
2642 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2643#endif 3344#endif
2644#if EV_USE_POLL 3345#if EV_USE_POLL
2645 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2646#endif 3347#endif
2647#if EV_USE_SELECT 3348#if EV_USE_SELECT
2648 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2649#endif 3350#endif
2650 3351
2651 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
2652 3353
2653#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2656#endif 3357#endif
2657 } 3358 }
2658} 3359}
2659 3360
2660/* free up a loop structure */ 3361/* free up a loop structure */
2661void ecb_cold 3362ecb_cold
3363void
2662ev_loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
2663{ 3365{
2664 int i; 3366 int i;
2665 3367
2666#if EV_MULTIPLICITY 3368#if EV_MULTIPLICITY
… …
2669 return; 3371 return;
2670#endif 3372#endif
2671 3373
2672#if EV_CLEANUP_ENABLE 3374#if EV_CLEANUP_ENABLE
2673 /* queue cleanup watchers (and execute them) */ 3375 /* queue cleanup watchers (and execute them) */
2674 if (expect_false (cleanupcnt)) 3376 if (ecb_expect_false (cleanupcnt))
2675 { 3377 {
2676 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2677 EV_INVOKE_PENDING; 3379 EV_INVOKE_PENDING;
2678 } 3380 }
2679#endif 3381#endif
… …
2698#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
2699 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
2700 close (sigfd); 3402 close (sigfd);
2701#endif 3403#endif
2702 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
2703#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
2704 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
2705 close (fs_fd); 3412 close (fs_fd);
2706#endif 3413#endif
2707 3414
2708 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
2709 close (backend_fd); 3416 close (backend_fd);
2710 3417
2711#if EV_USE_IOCP 3418#if EV_USE_IOCP
2712 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2713#endif 3420#endif
2714#if EV_USE_PORT 3421#if EV_USE_PORT
2715 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2716#endif 3423#endif
2717#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
2718 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);
2719#endif 3432#endif
2720#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
2721 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2722#endif 3435#endif
2723#if EV_USE_POLL 3436#if EV_USE_POLL
2724 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2725#endif 3438#endif
2726#if EV_USE_SELECT 3439#if EV_USE_SELECT
2727 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2728#endif 3441#endif
2729 3442
2730 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
2731 { 3444 {
2732 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
2774 3487
2775inline_size void 3488inline_size void
2776loop_fork (EV_P) 3489loop_fork (EV_P)
2777{ 3490{
2778#if EV_USE_PORT 3491#if EV_USE_PORT
2779 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2780#endif 3493#endif
2781#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
2782 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);
2783#endif 3502#endif
2784#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
2785 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2786#endif 3505#endif
2787#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2788 infy_fork (EV_A); 3507 infy_fork (EV_A);
2789#endif 3508#endif
2790 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, according 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
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2792 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
2793 { 3533 {
2794 /* 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 */
2795 3535
2796 ev_ref (EV_A); 3536 ev_ref (EV_A);
2797 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
2798 3538
2799 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
2800 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
2801 3541
2802 evpipe_init (EV_A); 3542 evpipe_init (EV_A);
2803 /* iterate over everything, in case we missed something before */ 3543 /* iterate over everything, in case we missed something before */
2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3545 }
3546 #endif
2805 } 3547 }
2806#endif
2807 3548
2808 postfork = 0; 3549 postfork = 0;
2809} 3550}
2810 3551
2811#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2812 3553
3554ecb_cold
2813struct ev_loop * ecb_cold 3555struct ev_loop *
2814ev_loop_new (unsigned int flags) EV_THROW 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
2815{ 3557{
2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2817 3559
2818 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
2819 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
… …
2826} 3568}
2827 3569
2828#endif /* multiplicity */ 3570#endif /* multiplicity */
2829 3571
2830#if EV_VERIFY 3572#if EV_VERIFY
2831static void noinline ecb_cold 3573ecb_noinline ecb_cold
3574static void
2832verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
2833{ 3576{
2834 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));
2835 3578
2836 if (w->pending) 3579 if (w->pending)
2837 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));
2838} 3581}
2839 3582
2840static void noinline ecb_cold 3583ecb_noinline ecb_cold
3584static void
2841verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
2842{ 3586{
2843 int i; 3587 int i;
2844 3588
2845 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2850 3594
2851 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2852 } 3596 }
2853} 3597}
2854 3598
2855static void noinline ecb_cold 3599ecb_noinline ecb_cold
3600static void
2856array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
2857{ 3602{
2858 while (cnt--) 3603 while (cnt--)
2859 { 3604 {
2860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2863} 3608}
2864#endif 3609#endif
2865 3610
2866#if EV_FEATURE_API 3611#if EV_FEATURE_API
2867void ecb_cold 3612void ecb_cold
2868ev_verify (EV_P) EV_THROW 3613ev_verify (EV_P) EV_NOEXCEPT
2869{ 3614{
2870#if EV_VERIFY 3615#if EV_VERIFY
2871 int i; 3616 int i;
2872 WL w, w2; 3617 WL w, w2;
2873 3618
… …
2949#endif 3694#endif
2950} 3695}
2951#endif 3696#endif
2952 3697
2953#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
2954struct ev_loop * ecb_cold 3700struct ev_loop *
2955#else 3701#else
2956int 3702int
2957#endif 3703#endif
2958ev_default_loop (unsigned int flags) EV_THROW 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
2959{ 3705{
2960 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
2961 { 3707 {
2962#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
2963 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2982 3728
2983 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
2984} 3730}
2985 3731
2986void 3732void
2987ev_loop_fork (EV_P) EV_THROW 3733ev_loop_fork (EV_P) EV_NOEXCEPT
2988{ 3734{
2989 postfork = 1; 3735 postfork = 1;
2990} 3736}
2991 3737
2992/*****************************************************************************/ 3738/*****************************************************************************/
… …
2996{ 3742{
2997 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
2998} 3744}
2999 3745
3000unsigned int 3746unsigned int
3001ev_pending_count (EV_P) EV_THROW 3747ev_pending_count (EV_P) EV_NOEXCEPT
3002{ 3748{
3003 int pri; 3749 int pri;
3004 unsigned int count = 0; 3750 unsigned int count = 0;
3005 3751
3006 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
3007 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
3008 3754
3009 return count; 3755 return count;
3010} 3756}
3011 3757
3012void noinline 3758ecb_noinline
3759void
3013ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
3014{ 3761{
3015 pendingpri = NUMPRI; 3762 pendingpri = NUMPRI;
3016 3763
3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3764 do
3018 { 3765 {
3019 --pendingpri; 3766 --pendingpri;
3020 3767
3768 /* pendingpri possibly gets modified in the inner loop */
3021 while (pendingcnt [pendingpri]) 3769 while (pendingcnt [pendingpri])
3022 { 3770 {
3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3024 3772
3025 p->w->pending = 0; 3773 p->w->pending = 0;
3026 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
3027 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
3028 } 3776 }
3029 } 3777 }
3778 while (pendingpri);
3030} 3779}
3031 3780
3032#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
3033/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
3034/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
3035inline_size void 3784inline_size void
3036idle_reify (EV_P) 3785idle_reify (EV_P)
3037{ 3786{
3038 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
3039 { 3788 {
3040 int pri; 3789 int pri;
3041 3790
3042 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
3043 { 3792 {
… …
3073 { 3822 {
3074 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
3075 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
3076 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
3077 3826
3078 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.)));
3079 3828
3080 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
3081 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
3082 } 3831 }
3083 else 3832 else
… …
3092 } 3841 }
3093} 3842}
3094 3843
3095#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
3096 3845
3097static void noinline 3846ecb_noinline
3847static void
3098periodic_recalc (EV_P_ ev_periodic *w) 3848periodic_recalc (EV_P_ ev_periodic *w)
3099{ 3849{
3100 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3101 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);
3102 3852
… …
3104 while (at <= ev_rt_now) 3854 while (at <= ev_rt_now)
3105 { 3855 {
3106 ev_tstamp nat = at + w->interval; 3856 ev_tstamp nat = at + w->interval;
3107 3857
3108 /* when resolution fails us, we use ev_rt_now */ 3858 /* when resolution fails us, we use ev_rt_now */
3109 if (expect_false (nat == at)) 3859 if (ecb_expect_false (nat == at))
3110 { 3860 {
3111 at = ev_rt_now; 3861 at = ev_rt_now;
3112 break; 3862 break;
3113 } 3863 }
3114 3864
… …
3160 } 3910 }
3161} 3911}
3162 3912
3163/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
3164/* 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? */
3165static void noinline ecb_cold 3915ecb_noinline ecb_cold
3916static void
3166periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
3167{ 3918{
3168 int i; 3919 int i;
3169 3920
3170 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
3183 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
3184} 3935}
3185#endif 3936#endif
3186 3937
3187/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
3188static void noinline ecb_cold 3939ecb_noinline ecb_cold
3940static void
3189timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
3190{ 3942{
3191 int i; 3943 int i;
3192 3944
3193 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
3202/* also detect if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
3203inline_speed void 3955inline_speed void
3204time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
3205{ 3957{
3206#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
3207 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
3208 { 3960 {
3209 int i; 3961 int i;
3210 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
3211 3963
3212 mn_now = get_clock (); 3964 mn_now = get_clock ();
3213 3965
3214 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3215 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
3216 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)))
3217 { 3969 {
3218 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
3219 return; 3971 return;
3220 } 3972 }
3221 3973
… …
3235 ev_tstamp diff; 3987 ev_tstamp diff;
3236 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
3237 3989
3238 diff = odiff - rtmn_diff; 3990 diff = odiff - rtmn_diff;
3239 3991
3240 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)))
3241 return; /* all is well */ 3993 return; /* all is well */
3242 3994
3243 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
3244 mn_now = get_clock (); 3996 mn_now = get_clock ();
3245 now_floor = mn_now; 3997 now_floor = mn_now;
… …
3254 else 4006 else
3255#endif 4007#endif
3256 { 4008 {
3257 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
3258 4010
3259 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)))
3260 { 4012 {
3261 /* 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 */
3262 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3263#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
3264 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
3287#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
3288 ev_verify (EV_A); 4040 ev_verify (EV_A);
3289#endif 4041#endif
3290 4042
3291#ifndef _WIN32 4043#ifndef _WIN32
3292 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3293 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
3294 { 4046 {
3295 curpid = getpid (); 4047 curpid = getpid ();
3296 postfork = 1; 4048 postfork = 1;
3297 } 4049 }
3298#endif 4050#endif
3299 4051
3300#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
3301 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
3302 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
3303 if (forkcnt) 4055 if (forkcnt)
3304 { 4056 {
3305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3306 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
3307 } 4059 }
3308#endif 4060#endif
3309 4061
3310#if EV_PREPARE_ENABLE 4062#if EV_PREPARE_ENABLE
3311 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
3312 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
3313 { 4065 {
3314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3315 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
3316 } 4068 }
3317#endif 4069#endif
3318 4070
3319 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
3320 break; 4072 break;
3321 4073
3322 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
3323 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
3324 loop_fork (EV_A); 4076 loop_fork (EV_A);
3325 4077
3326 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
3327 fd_reify (EV_A); 4079 fd_reify (EV_A);
3328 4080
… …
3333 4085
3334 /* remember old timestamp for io_blocktime calculation */ 4086 /* remember old timestamp for io_blocktime calculation */
3335 ev_tstamp prev_mn_now = mn_now; 4087 ev_tstamp prev_mn_now = mn_now;
3336 4088
3337 /* update time to cancel out callback processing overhead */ 4089 /* update time to cancel out callback processing overhead */
3338 time_update (EV_A_ 1e100); 4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3339 4091
3340 /* from now on, we want a pipe-wake-up */ 4092 /* from now on, we want a pipe-wake-up */
3341 pipe_write_wanted = 1; 4093 pipe_write_wanted = 1;
3342 4094
3343 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 */
3344 4096
3345 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3346 { 4098 {
3347 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
3348 4116
3349 if (timercnt) 4117 if (timercnt)
3350 { 4118 {
3351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3352 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
… …
3359 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
3360 } 4128 }
3361#endif 4129#endif
3362 4130
3363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
3364 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
3365 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
3366 4134
3367 /* at this point, we NEED to wait, so we have to ensure */ 4135 /* now there are two more special cases left, either we have
3368 /* 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 */
3369 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.)
3370 waittime = backend_mintime; 4143 : backend_mintime;
3371 4144
3372 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
3373 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
3374 { 4147 {
3375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3376 4149
3377 if (sleeptime > waittime - backend_mintime) 4150 if (sleeptime > waittime - backend_mintime)
3378 sleeptime = waittime - backend_mintime; 4151 sleeptime = waittime - backend_mintime;
3379 4152
3380 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3381 { 4154 {
3382 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
3383 waittime -= sleeptime; 4156 waittime -= sleeptime;
3384 } 4157 }
3385 } 4158 }
… …
3399 { 4172 {
3400 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)));
3401 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3402 } 4175 }
3403 4176
3404
3405 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
3406 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
3407 } 4179 }
3408 4180
3409 /* queue pending timers and reschedule them */ 4181 /* queue pending timers and reschedule them */
… …
3417 idle_reify (EV_A); 4189 idle_reify (EV_A);
3418#endif 4190#endif
3419 4191
3420#if EV_CHECK_ENABLE 4192#if EV_CHECK_ENABLE
3421 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
3422 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
3423 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3424#endif 4196#endif
3425 4197
3426 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
3427 } 4199 }
3428 while (expect_true ( 4200 while (ecb_expect_true (
3429 activecnt 4201 activecnt
3430 && !loop_done 4202 && !loop_done
3431 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3432 )); 4204 ));
3433 4205
… …
3440 4212
3441 return activecnt; 4213 return activecnt;
3442} 4214}
3443 4215
3444void 4216void
3445ev_break (EV_P_ int how) EV_THROW 4217ev_break (EV_P_ int how) EV_NOEXCEPT
3446{ 4218{
3447 loop_done = how; 4219 loop_done = how;
3448} 4220}
3449 4221
3450void 4222void
3451ev_ref (EV_P) EV_THROW 4223ev_ref (EV_P) EV_NOEXCEPT
3452{ 4224{
3453 ++activecnt; 4225 ++activecnt;
3454} 4226}
3455 4227
3456void 4228void
3457ev_unref (EV_P) EV_THROW 4229ev_unref (EV_P) EV_NOEXCEPT
3458{ 4230{
3459 --activecnt; 4231 --activecnt;
3460} 4232}
3461 4233
3462void 4234void
3463ev_now_update (EV_P) EV_THROW 4235ev_now_update (EV_P) EV_NOEXCEPT
3464{ 4236{
3465 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
3466} 4238}
3467 4239
3468void 4240void
3469ev_suspend (EV_P) EV_THROW 4241ev_suspend (EV_P) EV_NOEXCEPT
3470{ 4242{
3471 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3472} 4244}
3473 4245
3474void 4246void
3475ev_resume (EV_P) EV_THROW 4247ev_resume (EV_P) EV_NOEXCEPT
3476{ 4248{
3477 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
3478 4250
3479 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
3480 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3497inline_size void 4269inline_size void
3498wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
3499{ 4271{
3500 while (*head) 4272 while (*head)
3501 { 4273 {
3502 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
3503 { 4275 {
3504 *head = elem->next; 4276 *head = elem->next;
3505 break; 4277 break;
3506 } 4278 }
3507 4279
… …
3519 w->pending = 0; 4291 w->pending = 0;
3520 } 4292 }
3521} 4293}
3522 4294
3523int 4295int
3524ev_clear_pending (EV_P_ void *w) EV_THROW 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3525{ 4297{
3526 W w_ = (W)w; 4298 W w_ = (W)w;
3527 int pending = w_->pending; 4299 int pending = w_->pending;
3528 4300
3529 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
3530 { 4302 {
3531 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3532 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
3533 w_->pending = 0; 4305 w_->pending = 0;
3534 return p->events; 4306 return p->events;
… …
3561 w->active = 0; 4333 w->active = 0;
3562} 4334}
3563 4335
3564/*****************************************************************************/ 4336/*****************************************************************************/
3565 4337
3566void noinline 4338ecb_noinline
4339void
3567ev_io_start (EV_P_ ev_io *w) EV_THROW 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3568{ 4341{
3569 int fd = w->fd; 4342 int fd = w->fd;
3570 4343
3571 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
3572 return; 4345 return;
3573 4346
3574 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3575 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))));
3576 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
3577 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3578 4354
3579 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3581 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
3582 4358
3583 /* common bug, apparently */ 4359 /* common bug, apparently */
3584 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));
3585 4361
… …
3587 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
3588 4364
3589 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3590} 4366}
3591 4367
3592void noinline 4368ecb_noinline
4369void
3593ev_io_stop (EV_P_ ev_io *w) EV_THROW 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3594{ 4371{
3595 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
3597 return; 4374 return;
3598 4375
3599 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));
3600 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
3601 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3602 4382
3603 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
3604 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
3605 4385
3606 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3607 4387
3608 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
3609} 4389}
3610 4390
3611void noinline 4391ecb_noinline
4392void
3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3613{ 4394{
3614 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3615 return; 4396 return;
3616 4397
3617 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
3618 4399
3619 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.));
3620 4401
3621 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
3622 4403
3623 ++timercnt; 4404 ++timercnt;
3624 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3625 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3626 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
3627 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
3628 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
3629 4410
3630 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3631 4412
3632 /*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));*/
3633} 4414}
3634 4415
3635void noinline 4416ecb_noinline
4417void
3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3637{ 4419{
3638 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
3639 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
3640 return; 4422 return;
3641 4423
3642 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
3643 4425
3644 { 4426 {
… …
3646 4428
3647 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));
3648 4430
3649 --timercnt; 4431 --timercnt;
3650 4432
3651 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
3652 { 4434 {
3653 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
3654 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
3655 } 4437 }
3656 } 4438 }
… …
3660 ev_stop (EV_A_ (W)w); 4442 ev_stop (EV_A_ (W)w);
3661 4443
3662 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3663} 4445}
3664 4446
3665void noinline 4447ecb_noinline
4448void
3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3667{ 4450{
3668 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
3669 4452
3670 clear_pending (EV_A_ (W)w); 4453 clear_pending (EV_A_ (W)w);
3671 4454
… …
3688 4471
3689 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3690} 4473}
3691 4474
3692ev_tstamp 4475ev_tstamp
3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3694{ 4477{
3695 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.));
3696} 4479}
3697 4480
3698#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
3699void noinline 4482ecb_noinline
4483void
3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3701{ 4485{
3702 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
3703 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
3704 4493
3705 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
3706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3707 else if (w->interval) 4496 else if (w->interval)
3708 { 4497 {
… …
3714 4503
3715 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
3716 4505
3717 ++periodiccnt; 4506 ++periodiccnt;
3718 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3719 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3720 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3721 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
3722 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
3723 4512
3724 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3725 4514
3726 /*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));*/
3727} 4516}
3728 4517
3729void noinline 4518ecb_noinline
4519void
3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3731{ 4521{
3732 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
3733 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
3734 return; 4524 return;
3735 4525
3736 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
3737 4527
3738 { 4528 {
… …
3740 4530
3741 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));
3742 4532
3743 --periodiccnt; 4533 --periodiccnt;
3744 4534
3745 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
3746 { 4536 {
3747 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
3748 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
3749 } 4539 }
3750 } 4540 }
… …
3752 ev_stop (EV_A_ (W)w); 4542 ev_stop (EV_A_ (W)w);
3753 4543
3754 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3755} 4545}
3756 4546
3757void noinline 4547ecb_noinline
4548void
3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3759{ 4550{
3760 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
3761 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
3762 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
3763} 4554}
… …
3767# define SA_RESTART 0 4558# define SA_RESTART 0
3768#endif 4559#endif
3769 4560
3770#if EV_SIGNAL_ENABLE 4561#if EV_SIGNAL_ENABLE
3771 4562
3772void noinline 4563ecb_noinline
4564void
3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3774{ 4566{
3775 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
3776 return; 4568 return;
3777 4569
3778 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));
3779 4571
3780#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
… …
3849 } 4641 }
3850 4642
3851 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3852} 4644}
3853 4645
3854void noinline 4646ecb_noinline
4647void
3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3856{ 4649{
3857 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
3858 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
3859 return; 4652 return;
3860 4653
3861 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3862 4655
3863 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3891#endif 4684#endif
3892 4685
3893#if EV_CHILD_ENABLE 4686#if EV_CHILD_ENABLE
3894 4687
3895void 4688void
3896ev_child_start (EV_P_ ev_child *w) EV_THROW 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3897{ 4690{
3898#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
3899 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));
3900#endif 4693#endif
3901 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
3902 return; 4695 return;
3903 4696
3904 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3905 4698
3906 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
… …
3908 4701
3909 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3910} 4703}
3911 4704
3912void 4705void
3913ev_child_stop (EV_P_ ev_child *w) EV_THROW 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3914{ 4707{
3915 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3916 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
3917 return; 4710 return;
3918 4711
3919 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3920 4713
3921 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3935 4728
3936#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
3937#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3938#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
3939 4732
3940static 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);
3941 4734
3942#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
3943 4736
3944/* 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 */
3945# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3946 4739
3947static void noinline 4740ecb_noinline
4741static void
3948infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
3949{ 4743{
3950 w->wd = inotify_add_watch (fs_fd, w->path, 4744 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4016 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4017 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
4018 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4019} 4813}
4020 4814
4021static void noinline 4815ecb_noinline
4816static void
4022infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
4023{ 4818{
4024 int slot; 4819 int slot;
4025 int wd = w->wd; 4820 int wd = w->wd;
4026 4821
… …
4033 4828
4034 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
4035 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
4036} 4831}
4037 4832
4038static void noinline 4833ecb_noinline
4834static void
4039infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4040{ 4836{
4041 if (slot < 0) 4837 if (slot < 0)
4042 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
4043 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4079 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4080 ofs += sizeof (struct inotify_event) + ev->len; 4876 ofs += sizeof (struct inotify_event) + ev->len;
4081 } 4877 }
4082} 4878}
4083 4879
4084inline_size void ecb_cold 4880inline_size ecb_cold
4881void
4085ev_check_2625 (EV_P) 4882ev_check_2625 (EV_P)
4086{ 4883{
4087 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
4088 * 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
4089 */ 4886 */
… …
4179#else 4976#else
4180# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
4181#endif 4978#endif
4182 4979
4183void 4980void
4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4185{ 4982{
4186 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
4187 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
4188 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
4189 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
4190} 4987}
4191 4988
4192static void noinline 4989ecb_noinline
4990static void
4193stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4194{ 4992{
4195 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4196 4994
4197 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
4228 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
4229 } 5027 }
4230} 5028}
4231 5029
4232void 5030void
4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4234{ 5032{
4235 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
4236 return; 5034 return;
4237 5035
4238 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
4239 5037
4240 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4259 5057
4260 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
4261} 5059}
4262 5060
4263void 5061void
4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4265{ 5063{
4266 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
4267 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
4268 return; 5066 return;
4269 5067
4270 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4271 5069
4272#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
4285} 5083}
4286#endif 5084#endif
4287 5085
4288#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
4289void 5087void
4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4291{ 5089{
4292 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
4293 return; 5091 return;
4294 5092
4295 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
4296 5094
4297 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
4300 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
4301 5099
4302 ++idleall; 5100 ++idleall;
4303 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
4304 5102
4305 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);
4306 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
4307 } 5105 }
4308 5106
4309 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4310} 5108}
4311 5109
4312void 5110void
4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4314{ 5112{
4315 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4316 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4317 return; 5115 return;
4318 5116
4319 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4320 5118
4321 { 5119 {
… …
4332} 5130}
4333#endif 5131#endif
4334 5132
4335#if EV_PREPARE_ENABLE 5133#if EV_PREPARE_ENABLE
4336void 5134void
4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4338{ 5136{
4339 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
4340 return; 5138 return;
4341 5139
4342 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4343 5141
4344 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
4345 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4346 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
4347 5145
4348 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
4349} 5147}
4350 5148
4351void 5149void
4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4353{ 5151{
4354 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
4355 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
4356 return; 5154 return;
4357 5155
4358 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
4359 5157
4360 { 5158 {
… …
4370} 5168}
4371#endif 5169#endif
4372 5170
4373#if EV_CHECK_ENABLE 5171#if EV_CHECK_ENABLE
4374void 5172void
4375ev_check_start (EV_P_ ev_check *w) EV_THROW 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4376{ 5174{
4377 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
4378 return; 5176 return;
4379 5177
4380 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4381 5179
4382 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
4383 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4384 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
4385 5183
4386 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
4387} 5185}
4388 5186
4389void 5187void
4390ev_check_stop (EV_P_ ev_check *w) EV_THROW 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4391{ 5189{
4392 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
4393 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
4394 return; 5192 return;
4395 5193
4396 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4397 5195
4398 { 5196 {
… …
4407 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
4408} 5206}
4409#endif 5207#endif
4410 5208
4411#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
4412void noinline 5210ecb_noinline
5211void
4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4414{ 5213{
4415 ev_run (w->other, EVRUN_NOWAIT); 5214 ev_run (w->other, EVRUN_NOWAIT);
4416} 5215}
4417 5216
4418static void 5217static void
… …
4440 ev_run (EV_A_ EVRUN_NOWAIT); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
4441 } 5240 }
4442 } 5241 }
4443} 5242}
4444 5243
5244#if EV_FORK_ENABLE
4445static void 5245static void
4446embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4447{ 5247{
4448 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));
4449 5249
… …
4456 ev_run (EV_A_ EVRUN_NOWAIT); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
4457 } 5257 }
4458 5258
4459 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
4460} 5260}
5261#endif
4461 5262
4462#if 0 5263#if 0
4463static void 5264static void
4464embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4465{ 5266{
4466 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
4467} 5268}
4468#endif 5269#endif
4469 5270
4470void 5271void
4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4472{ 5273{
4473 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
4474 return; 5275 return;
4475 5276
4476 { 5277 {
4477 EV_P = w->other; 5278 EV_P = w->other;
4478 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 ()));
… …
4486 5287
4487 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
4488 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
4489 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
4490 5291
5292#if EV_FORK_ENABLE
4491 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
4492 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
4493 5296
4494 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4495 5298
4496 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
4497 5300
4498 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
4499} 5302}
4500 5303
4501void 5304void
4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4503{ 5306{
4504 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
4505 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
4506 return; 5309 return;
4507 5310
4508 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
4509 5312
4510 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
4511 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
4512 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
4513 5318
4514 ev_stop (EV_A_ (W)w); 5319 ev_stop (EV_A_ (W)w);
4515 5320
4516 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
4517} 5322}
4518#endif 5323#endif
4519 5324
4520#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
4521void 5326void
4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4523{ 5328{
4524 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
4525 return; 5330 return;
4526 5331
4527 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4528 5333
4529 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
4530 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4531 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
4532 5337
4533 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
4534} 5339}
4535 5340
4536void 5341void
4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4538{ 5343{
4539 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
4540 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
4541 return; 5346 return;
4542 5347
4543 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
4544 5349
4545 { 5350 {
… …
4555} 5360}
4556#endif 5361#endif
4557 5362
4558#if EV_CLEANUP_ENABLE 5363#if EV_CLEANUP_ENABLE
4559void 5364void
4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4561{ 5366{
4562 if (expect_false (ev_is_active (w))) 5367 if (ecb_expect_false (ev_is_active (w)))
4563 return; 5368 return;
4564 5369
4565 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4566 5371
4567 ev_start (EV_A_ (W)w, ++cleanupcnt); 5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
4568 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4569 cleanups [cleanupcnt - 1] = w; 5374 cleanups [cleanupcnt - 1] = w;
4570 5375
4571 /* cleanup watchers should never keep a refcount on the loop */ 5376 /* cleanup watchers should never keep a refcount on the loop */
4572 ev_unref (EV_A); 5377 ev_unref (EV_A);
4573 EV_FREQUENT_CHECK; 5378 EV_FREQUENT_CHECK;
4574} 5379}
4575 5380
4576void 5381void
4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4578{ 5383{
4579 clear_pending (EV_A_ (W)w); 5384 clear_pending (EV_A_ (W)w);
4580 if (expect_false (!ev_is_active (w))) 5385 if (ecb_expect_false (!ev_is_active (w)))
4581 return; 5386 return;
4582 5387
4583 EV_FREQUENT_CHECK; 5388 EV_FREQUENT_CHECK;
4584 ev_ref (EV_A); 5389 ev_ref (EV_A);
4585 5390
… …
4596} 5401}
4597#endif 5402#endif
4598 5403
4599#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
4600void 5405void
4601ev_async_start (EV_P_ ev_async *w) EV_THROW 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4602{ 5407{
4603 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
4604 return; 5409 return;
4605 5410
4606 w->sent = 0; 5411 w->sent = 0;
4607 5412
4608 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
4609 5414
4610 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4611 5416
4612 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
4613 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4614 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
4615 5420
4616 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
4617} 5422}
4618 5423
4619void 5424void
4620ev_async_stop (EV_P_ ev_async *w) EV_THROW 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4621{ 5426{
4622 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
4623 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
4624 return; 5429 return;
4625 5430
4626 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
4627 5432
4628 { 5433 {
… …
4636 5441
4637 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
4638} 5443}
4639 5444
4640void 5445void
4641ev_async_send (EV_P_ ev_async *w) EV_THROW 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4642{ 5447{
4643 w->sent = 1; 5448 w->sent = 1;
4644 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
4645} 5450}
4646#endif 5451#endif
… …
4683 5488
4684 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));
4685} 5490}
4686 5491
4687void 5492void
4688ev_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
4689{ 5494{
4690 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));
4691
4692 if (expect_false (!once))
4693 {
4694 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4695 return;
4696 }
4697 5496
4698 once->cb = cb; 5497 once->cb = cb;
4699 once->arg = arg; 5498 once->arg = arg;
4700 5499
4701 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
4714} 5513}
4715 5514
4716/*****************************************************************************/ 5515/*****************************************************************************/
4717 5516
4718#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
4719void ecb_cold 5518ecb_cold
5519void
4720ev_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
4721{ 5521{
4722 int i, j; 5522 int i, j;
4723 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
4724 5524
4725 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))

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