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Comparing libev/ev.c (file contents):
Revision 1.459 by root, Tue Oct 29 12:13:37 2013 UTC vs.
Revision 1.520 by root, Sat Dec 28 07:44:15 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#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
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
249#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
251#endif 280#endif
252 281
253#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
254# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
256# else 285# else
257# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
287# endif
288#endif
289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
258# endif 296# endif
259#endif 297#endif
260 298
261#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
304 342
305#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
306# define EV_USE_PORT 0 344# define EV_USE_PORT 0
307#endif 345#endif
308 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
309#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
311# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
312# else 366# else
313# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
336# else 390# else
337# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
338# endif 392# endif
339#endif 393#endif
340 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
341#if 0 /* debugging */ 403#if 0 /* debugging */
342# define EV_VERIFY 3 404# define EV_VERIFY 3
343# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
344# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
345#endif 407#endif
… …
354 416
355#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 419#endif
358 420
359#ifdef ANDROID 421#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 423# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
378# include <sys/syscall.h> 440# include <sys/syscall.h>
379# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
381# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
382# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
383# else 446# else
384# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
385# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
386# endif 449# endif
387#endif 450#endif
… …
401#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
402# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
403# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
404#endif 467#endif
405 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
406#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
407/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
409# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
410# endif 506# endif
411#endif 507#endif
412 508
413#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
414# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
419# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
420# endif 516# endif
421#endif 517#endif
422 518
423#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
425# include <stdint.h> 521# include <stdint.h>
426# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
427# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
428# endif 524# endif
429# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
435# endif 531# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif 533#endif
438 534
439#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
441# include <stdint.h> 537# include <stdint.h>
442# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
444# endif 540# endif
445# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
447# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
448# else 544# else
449# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
450# endif 546# endif
451# endif 547# endif
452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
453 549
454struct signalfd_siginfo 550struct signalfd_siginfo
455{ 551{
456 uint32_t ssi_signo; 552 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
458}; 554};
459#endif 555#endif
460 556
461/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
462 568
463#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
464# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
465#else 571#else
466# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
471 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
472 */ 578 */
473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
475 581
476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#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) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
478 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# 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) 597# 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) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
481 602
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
484/* 605/*
485 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
486 * 607 *
487 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 610 * All rights reserved.
490 * 611 *
491 * Redistribution and use in source and binary forms, with or without modifica- 612 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * 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 630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE. 631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
511 */ 643 */
512 644
513#ifndef ECB_H 645#ifndef ECB_H
514#define ECB_H 646#define ECB_H
515 647
516/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003 649#define ECB_VERSION 0x00010006
518 650
519#ifdef _WIN32 651#ifdef _WIN32
520 typedef signed char int8_t; 652 typedef signed char int8_t;
521 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
522 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
539 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
541 #endif 673 #endif
542#else 674#else
543 #include <inttypes.h> 675 #include <inttypes.h>
544 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
545 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
546 #else 678 #else
547 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
548 #endif 680 #endif
549#endif 681#endif
550 682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
551/* work around x32 idiocy by defining proper macros */ 686/* work around x32 idiocy by defining proper macros */
552#if __x86_64 || _M_AMD64 687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
553 #if _ILP32 688 #if _ILP32
554 #define ECB_AMD64_X32 1 689 #define ECB_AMD64_X32 1
555 #else 690 #else
556 #define ECB_AMD64 1 691 #define ECB_AMD64 1
557 #endif 692 #endif
… …
562 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so. 698 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have 699 * 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. 700 * an issue with that they should have done it right in the first place.
566 */ 701 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
570 #else 704#else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif 706#endif
573#endif
574 707
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
576#define ECB_C99 (__STDC_VERSION__ >= 199901L) 709
577#define ECB_C11 (__STDC_VERSION__ >= 201112L) 710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
578#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
580 738
581#if ECB_CPP 739#if ECB_CPP
582 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
599 757
600#if ECB_NO_SMP 758#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
602#endif 760#endif
603 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
604#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
606 #if __i386 || __i386__ 774 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* 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__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #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__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif __sparc || __sparc__ 798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
648 826
649#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
653 834
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 835 #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. 836 /* see comment below (stdatomic.h) about the C11 memory model. */
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */ 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
662 841
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
665 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
666 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
667 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
668 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
669 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
670 #elif defined _WIN32 855 #elif defined _WIN32
671 #include <WinNT.h> 856 #include <WinNT.h>
672 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
673 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
674 #include <mbarrier.h> 859 #include <mbarrier.h>
675 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
676 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
677 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
678 #elif __xlC__ 864 #elif __xlC__
679 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
680 #endif 866 #endif
681#endif 867#endif
682 868
683#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
684 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
685 /* we assume that these memory fences work on all variables/all memory accesses, */ 871 /* we assume that these memory fences work on all variables/all memory accesses, */
686 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
687 #include <stdatomic.h> 873 #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) 874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
695 #endif 877 #endif
696#endif 878#endif
697 879
698#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
699 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
719 901
720#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
721 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
722#endif 904#endif
723 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
724/*****************************************************************************/ 910/*****************************************************************************/
725 911
726#if __cplusplus 912#if ECB_CPP
727 #define ecb_inline static inline 913 #define ecb_inline static inline
728#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
729 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
730#elif ECB_C99 916#elif ECB_C99
731 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
745 931
746#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
747#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
748#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
749#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
750 937
751#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
752 939
753#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
754 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
755 #define ecb_is_constant(expr) __builtin_constant_p (expr) 947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
756 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
757 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
758#else 964#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) 965 #define ecb_prefetch(addr,rw,locality)
763#endif 966#endif
764 967
765/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
766#if ECB_GCC_VERSION(4,5) 969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
767 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
768#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
769 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
770#endif 975#endif
771 976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
772#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
773#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
774#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
775#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
776 1000
777#if ECB_C11 1001#if ECB_C11 || __IBMC_NORETURN
1002 /* 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 1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
779#else 1009#else
780 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
781#endif 1011#endif
782 1012
783#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
… …
798/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
799#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
800#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
801 1031
802/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
803#if ECB_GCC_VERSION(3,4) 1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
804 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
805 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
806 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
807 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
808 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
809 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
810 /* no popcountll */ 1043 /* no popcountll */
811#else 1044#else
812 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
813 ecb_function_ int 1046 ecb_function_ ecb_const int
814 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
815 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
816 int r = 0; 1054 int r = 0;
817 1055
818 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
819 1057
820#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
830 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
831 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
832#endif 1070#endif
833 1071
834 return r; 1072 return r;
1073#endif
835 } 1074 }
836 1075
837 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
838 ecb_function_ int 1077 ecb_function_ ecb_const int
839 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
840 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
841 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
842 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
843 } 1088 }
844 1089
845 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
846 ecb_function_ int 1091 ecb_function_ ecb_const int
847 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
848 { 1093 {
849 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
850 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
851 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
852 x *= 0x01010101; 1097 x *= 0x01010101;
853 1098
854 return x >> 24; 1099 return x >> 24;
855 } 1100 }
856 1101
857 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
858 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
859 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
860 int r = 0; 1110 int r = 0;
861 1111
862 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
863 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
864 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
865 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
866 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
867 1117
868 return r; 1118 return r;
1119#endif
869 } 1120 }
870 1121
871 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
872 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
873 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
874 int r = 0; 1130 int r = 0;
875 1131
876 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
877 1133
878 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
879 } 1136 }
880#endif 1137#endif
881 1138
882ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1139ecb_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)); } 1140ecb_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; 1141ecb_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)); } 1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
886 1143
887ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
888ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
889{ 1146{
890 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
891 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
892} 1149}
893 1150
894ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
895ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
896{ 1153{
897 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
898 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
899 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
900 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
901 1158
902 return x; 1159 return x;
903} 1160}
904 1161
905ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
906ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
907{ 1164{
908 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
909 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
910 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
911 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
914 return x; 1171 return x;
915} 1172}
916 1173
917/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
918/* so for this version we are lazy */ 1175/* so for this version we are lazy */
919ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
920ecb_function_ int 1177ecb_function_ ecb_const int
921ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
922{ 1179{
923 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
924} 1181}
925 1182
926ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1183ecb_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; 1184ecb_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; 1185ecb_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; 1186ecb_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; 1187ecb_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; 1188ecb_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; 1189ecb_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; 1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
934 1191
935ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1192ecb_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); } 1193ecb_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); } 1194ecb_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); } 1195ecb_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); } 1196ecb_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); } 1197ecb_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); } 1198ecb_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); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
943 1200
944#if ECB_GCC_VERSION(4,3) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
945 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
946 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
947 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
948#else 1214#else
949 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
950 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
951 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
952 { 1218 {
953 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
954 } 1220 }
955 1221
956 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
957 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
958 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
959 { 1225 {
960 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
961 } 1227 }
962 1228
963 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
964 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
965 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
966 { 1232 {
967 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
968 } 1234 }
969#endif 1235#endif
970 1236
971#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
972 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
973#else 1239#else
974 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
975 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
976 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
977#endif 1243#endif
978 1244
979/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
980#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
981 1247
982ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
983ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
984ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
985{ 1251{
986 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
987 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
988 /* successfully return a constant. */ 1254 /* successfully return a constant. */
989 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
990 /* is to avoid it in all cases, at least on common architectures */ 1256 /* is to avoid it in all cases, at least on common architectures */
991 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* 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__ 1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
995 return 0x44; 1261 return 0x44332211;
996#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
997 return 0x11; 1265 return 0x11223344;
998#else 1266#else
999 union 1267 union
1000 { 1268 {
1269 uint8_t c[4];
1001 uint32_t i; 1270 uint32_t u;
1002 uint8_t c;
1003 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1004 return u.c; 1272 return u.u;
1005#endif 1273#endif
1006} 1274}
1007 1275
1008ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1009ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1010ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1011ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1012 1280
1013#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1014 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1015#else 1283#else
1016 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1017#endif 1285#endif
1018 1286
1019#if __cplusplus 1287#if ECB_CPP
1020 template<typename T> 1288 template<typename T>
1021 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
1022 { 1290 {
1023 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1024 } 1292 }
… …
1041 } 1309 }
1042#else 1310#else
1043 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1044#endif 1312#endif
1045 1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1046/*******************************************************************************/ 1410/*******************************************************************************/
1047/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1048 1412
1049/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1050/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1051#if 0 \ 1415#if 0 \
1052 || __i386 || __i386__ \ 1416 || __i386 || __i386__ \
1053 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1417 || ECB_GCC_AMD64 \
1054 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1055 || defined __arm__ && defined __ARM_EABI__ \
1056 || defined __s390__ || defined __s390x__ \ 1419 || defined __s390__ || defined __s390x__ \
1057 || defined __mips__ \ 1420 || defined __mips__ \
1058 || defined __alpha__ \ 1421 || defined __alpha__ \
1059 || defined __hppa__ \ 1422 || defined __hppa__ \
1060 || defined __ia64__ \ 1423 || defined __ia64__ \
1061 || defined __m68k__ \ 1424 || defined __m68k__ \
1062 || defined __m88k__ \ 1425 || defined __m88k__ \
1063 || defined __sh__ \ 1426 || defined __sh__ \
1064 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1065 #define ECB_STDFP 1 1430 #define ECB_STDFP 1
1066 #include <string.h> /* for memcpy */ 1431 #include <string.h> /* for memcpy */
1067#else 1432#else
1068 #define ECB_STDFP 0 1433 #define ECB_STDFP 0
1069#endif 1434#endif
1070 1435
1071#ifndef ECB_NO_LIBM 1436#ifndef ECB_NO_LIBM
1072 1437
1073 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ 1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1074 1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1075 #ifdef NEN 1447 #ifdef NAN
1076 #define ECB_NAN NAN 1448 #define ECB_NAN NAN
1077 #else 1449 #else
1078 #define ECB_NAN INFINITY 1450 #define ECB_NAN ECB_INFINITY
1079 #endif 1451 #endif
1080 1452
1081 /* converts an ieee half/binary16 to a float */ 1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1082 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1083 ecb_function_ float 1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1084 ecb_binary16_to_float (uint16_t x) 1456 #else
1085 { 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1086 int e = (x >> 10) & 0x1f; 1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1087 int m = x & 0x3ff; 1459 #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 1460
1098 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1099 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1100 ecb_function_ uint32_t 1463 ecb_function_ ecb_const uint32_t
1101 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1102 { 1465 {
1103 uint32_t r; 1466 uint32_t r;
1104 1467
1105 #if ECB_STDFP 1468 #if ECB_STDFP
… …
1112 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1113 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1114 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1115 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1116 1479
1117 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1118 1481
1119 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1120 1483
1121 if (r) 1484 if (r)
1122 m = -m; 1485 m = -m;
… …
1134 1497
1135 return r; 1498 return r;
1136 } 1499 }
1137 1500
1138 /* converts an ieee single/binary32 to a float */ 1501 /* converts an ieee single/binary32 to a float */
1139 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1140 ecb_function_ float 1503 ecb_function_ ecb_const float
1141 ecb_binary32_to_float (uint32_t x) 1504 ecb_binary32_to_float (uint32_t x)
1142 { 1505 {
1143 float r; 1506 float r;
1144 1507
1145 #if ECB_STDFP 1508 #if ECB_STDFP
… …
1155 x |= 0x800000U; 1518 x |= 0x800000U;
1156 else 1519 else
1157 e = 1; 1520 e = 1;
1158 1521
1159 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1160 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1161 1524
1162 r = neg ? -r : r; 1525 r = neg ? -r : r;
1163 #endif 1526 #endif
1164 1527
1165 return r; 1528 return r;
1166 } 1529 }
1167 1530
1168 /* convert a double to ieee double/binary64 */ 1531 /* convert a double to ieee double/binary64 */
1169 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1170 ecb_function_ uint64_t 1533 ecb_function_ ecb_const uint64_t
1171 ecb_double_to_binary64 (double x) 1534 ecb_double_to_binary64 (double x)
1172 { 1535 {
1173 uint64_t r; 1536 uint64_t r;
1174 1537
1175 #if ECB_STDFP 1538 #if ECB_STDFP
… …
1204 1567
1205 return r; 1568 return r;
1206 } 1569 }
1207 1570
1208 /* converts an ieee double/binary64 to a double */ 1571 /* converts an ieee double/binary64 to a double */
1209 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1210 ecb_function_ double 1573 ecb_function_ ecb_const double
1211 ecb_binary64_to_double (uint64_t x) 1574 ecb_binary64_to_double (uint64_t x)
1212 { 1575 {
1213 double r; 1576 double r;
1214 1577
1215 #if ECB_STDFP 1578 #if ECB_STDFP
… …
1233 #endif 1596 #endif
1234 1597
1235 return r; 1598 return r;
1236 } 1599 }
1237 1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1238#endif 1617#endif
1239 1618
1240#endif 1619#endif
1241 1620
1242/* ECB.H END */ 1621/* ECB.H END */
1243 1622
1244#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1245/* if your architecture doesn't need memory fences, e.g. because it is 1624/* 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 1625 * 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 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1248 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1249 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1250 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1251 */ 1630 */
1252# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1256# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1257# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1258# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1259#endif 1638#endif
1260 1639
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 1640#define inline_size ecb_inline
1266 1641
1267#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1268# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1269#else 1644#else
1270# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1271#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1272 1713
1273#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1274 1715
1275#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1276# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1277#else 1718#else
1278# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1279#endif 1720#endif
1280 1721
1281#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1282#define EMPTY2(a,b) /* used to suppress some warnings */
1283 1723
1284typedef ev_watcher *W; 1724typedef ev_watcher *W;
1285typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1286typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1287 1727
… …
1312# include "ev_win32.c" 1752# include "ev_win32.c"
1313#endif 1753#endif
1314 1754
1315/*****************************************************************************/ 1755/*****************************************************************************/
1316 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1317/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1318 1762
1319#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1320# include <math.h> 1764# include <math.h>
1321# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1322#else 1766#else
1323 1767
1324#include <float.h> 1768#include <float.h>
1325 1769
1326/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1327static ev_tstamp noinline 1772static ev_tstamp
1328ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1329{ 1774{
1330 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1331#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1332 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1333#else 1778#else
1334 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1335#endif 1780#endif
1336 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1337 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1338 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1339 { 1792 {
1340 ev_tstamp f; 1793 ev_tstamp f;
1341 1794
1342 if (v == v - 1.) 1795 if (v == v - 1.)
1343 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1344 1797
1345 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1346 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1347 } 1800 }
1348 1801
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 */ 1802 /* fits into an unsigned long */
1358 return (unsigned long)v; 1803 return (unsigned long)v;
1359} 1804}
1360 1805
1361#endif 1806#endif
… …
1364 1809
1365#ifdef __linux 1810#ifdef __linux
1366# include <sys/utsname.h> 1811# include <sys/utsname.h>
1367#endif 1812#endif
1368 1813
1369static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1370ev_linux_version (void) 1816ev_linux_version (void)
1371{ 1817{
1372#ifdef __linux 1818#ifdef __linux
1373 unsigned int v = 0; 1819 unsigned int v = 0;
1374 struct utsname buf; 1820 struct utsname buf;
… …
1403} 1849}
1404 1850
1405/*****************************************************************************/ 1851/*****************************************************************************/
1406 1852
1407#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1408static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1409ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1410{ 1857{
1411 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1412} 1859}
1413#endif 1860#endif
1414 1861
1415static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1416 1863
1417void ecb_cold 1864ecb_cold
1865void
1418ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1419{ 1867{
1420 syserr_cb = cb; 1868 syserr_cb = cb;
1421} 1869}
1422 1870
1423static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1424ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1425{ 1874{
1426 if (!msg) 1875 if (!msg)
1427 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1428 1877
… …
1441 abort (); 1890 abort ();
1442 } 1891 }
1443} 1892}
1444 1893
1445static void * 1894static void *
1446ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1447{ 1896{
1448 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1449 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1450 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1451 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1457 1906
1458 free (ptr); 1907 free (ptr);
1459 return 0; 1908 return 0;
1460} 1909}
1461 1910
1462static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1463 1912
1464void ecb_cold 1913ecb_cold
1914void
1465ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1466{ 1916{
1467 alloc = cb; 1917 alloc = cb;
1468} 1918}
1469 1919
1470inline_speed void * 1920inline_speed void *
… …
1497typedef struct 1947typedef struct
1498{ 1948{
1499 WL head; 1949 WL head;
1500 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1501 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 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 */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1503 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1504#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1505 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1506#endif 1956#endif
1507#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1508 SOCKET handle; 1958 SOCKET handle;
… …
1562 static struct ev_loop default_loop_struct; 2012 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 */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1564 2014
1565#else 2015#else
1566 2016
1567 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 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; 2018 #define VAR(name,decl) static decl;
1569 #include "ev_vars.h" 2019 #include "ev_vars.h"
1570 #undef VAR 2020 #undef VAR
1571 2021
1572 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1573 2023
1574#endif 2024#endif
1575 2025
1576#if EV_FEATURE_API 2026#if EV_FEATURE_API
1577# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# 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) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1579# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1580#else 2030#else
1581# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1582# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1583# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1587 2037
1588/*****************************************************************************/ 2038/*****************************************************************************/
1589 2039
1590#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1591ev_tstamp 2041ev_tstamp
1592ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1593{ 2043{
1594#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1595 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1596 { 2046 {
1597 struct timespec ts; 2047 struct timespec ts;
1598 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1599 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1600 } 2050 }
1601#endif 2051#endif
1602 2052
2053 {
1603 struct timeval tv; 2054 struct timeval tv;
1604 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1605 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1606} 2058}
1607#endif 2059#endif
1608 2060
1609inline_size ev_tstamp 2061inline_size ev_tstamp
1610get_clock (void) 2062get_clock (void)
1611{ 2063{
1612#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1613 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1614 { 2066 {
1615 struct timespec ts; 2067 struct timespec ts;
1616 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1617 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1618 } 2070 }
1619#endif 2071#endif
1620 2072
1621 return ev_time (); 2073 return ev_time ();
1622} 2074}
1623 2075
1624#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1625ev_tstamp 2077ev_tstamp
1626ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1627{ 2079{
1628 return ev_rt_now; 2080 return ev_rt_now;
1629} 2081}
1630#endif 2082#endif
1631 2083
1632void 2084void
1633ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1634{ 2086{
1635 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1636 { 2088 {
1637#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1638 struct timespec ts; 2090 struct timespec ts;
1639 2091
1640 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1641 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1642#elif defined _WIN32 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1643 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1644#else 2098#else
1645 struct timeval tv; 2099 struct timeval tv;
1646 2100
1647 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1648 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1678 } 2132 }
1679 2133
1680 return ncur; 2134 return ncur;
1681} 2135}
1682 2136
1683static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1684array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1685{ 2140{
1686 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1687 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1688} 2143}
1689 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1690#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1691 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1692 2149
1693#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1694 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1695 { \ 2152 { \
1696 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1697 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1698 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1699 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1700 } 2157 }
1701 2158
1702#if 0 2159#if 0
1703#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1704 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 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 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1714 2171
1715/*****************************************************************************/ 2172/*****************************************************************************/
1716 2173
1717/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1718static void noinline 2175ecb_noinline
2176static void
1719pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1720{ 2178{
1721} 2179}
1722 2180
1723void noinline 2181ecb_noinline
2182void
1724ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1725{ 2184{
1726 W w_ = (W)w; 2185 W w_ = (W)w;
1727 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1728 2187
1729 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1730 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1731 else 2190 else
1732 { 2191 {
1733 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1734 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1735 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1736 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1737 } 2196 }
1738 2197
1739 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1740} 2199}
1741 2200
1742inline_speed void 2201inline_speed void
1743feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1744{ 2203{
1745 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1746 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1747} 2206}
1748 2207
1749inline_size void 2208inline_size void
1750feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1785inline_speed void 2244inline_speed void
1786fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1787{ 2246{
1788 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1789 2248
1790 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1791 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1792} 2251}
1793 2252
1794void 2253void
1795ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1796{ 2255{
1797 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1798 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1799} 2258}
1800 2259
… …
1803inline_size void 2262inline_size void
1804fd_reify (EV_P) 2263fd_reify (EV_P)
1805{ 2264{
1806 int i; 2265 int i;
1807 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1809 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1810 { 2281 {
1811 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1812 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1813 2284
1814 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1828 } 2299 }
1829 } 2300 }
1830 } 2301 }
1831#endif 2302#endif
1832 2303
1833 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1834 { 2305 {
1835 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1836 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1837 ev_io *w; 2308 ev_io *w;
1838 2309
1839 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1840 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1841 2312
1842 anfd->reify = 0; 2313 anfd->reify = 0;
1843 2314
1844 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1845 { 2316 {
1846 anfd->events = 0; 2317 anfd->events = 0;
1847 2318
1848 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1849 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1854 2325
1855 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1856 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1857 } 2328 }
1858 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1859 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1860} 2338}
1861 2339
1862/* something about the given fd changed */ 2340/* something about the given fd changed */
1863inline_size void 2341inline_size
2342void
1864fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1865{ 2344{
1866 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1867 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1868 2347
1869 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1870 { 2349 {
1871 ++fdchangecnt; 2350 ++fdchangecnt;
1872 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1873 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1874 } 2353 }
1875} 2354}
1876 2355
1877/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1878inline_speed void ecb_cold 2357inline_speed ecb_cold void
1879fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1880{ 2359{
1881 ev_io *w; 2360 ev_io *w;
1882 2361
1883 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1886 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1887 } 2366 }
1888} 2367}
1889 2368
1890/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1891inline_size int ecb_cold 2370inline_size ecb_cold int
1892fd_valid (int fd) 2371fd_valid (int fd)
1893{ 2372{
1894#ifdef _WIN32 2373#ifdef _WIN32
1895 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1896#else 2375#else
1897 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1898#endif 2377#endif
1899} 2378}
1900 2379
1901/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1902static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1903fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1904{ 2384{
1905 int fd; 2385 int fd;
1906 2386
1907 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1909 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1910 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1911} 2391}
1912 2392
1913/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1914static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1915fd_enomem (EV_P) 2396fd_enomem (EV_P)
1916{ 2397{
1917 int fd; 2398 int fd;
1918 2399
1919 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1923 break; 2404 break;
1924 } 2405 }
1925} 2406}
1926 2407
1927/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1928static void noinline 2409ecb_noinline
2410static void
1929fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1930{ 2412{
1931 int fd; 2413 int fd;
1932 2414
1933 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1986 ev_tstamp minat; 2468 ev_tstamp minat;
1987 ANHE *minpos; 2469 ANHE *minpos;
1988 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1989 2471
1990 /* find minimum child */ 2472 /* find minimum child */
1991 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1992 { 2474 {
1993 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1994 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 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)); 2477 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)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1997 } 2479 }
1998 else if (pos < E) 2480 else if (pos < E)
1999 { 2481 {
2000 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* 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)); 2483 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)); 2484 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)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2004 } 2486 }
2005 else 2487 else
2006 break; 2488 break;
2007 2489
2008 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2016 2498
2017 heap [k] = he; 2499 heap [k] = he;
2018 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2019} 2501}
2020 2502
2021#else /* 4HEAP */ 2503#else /* not 4HEAP */
2022 2504
2023#define HEAP0 1 2505#define HEAP0 1
2024#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2025#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2026 2508
… …
2114 2596
2115/*****************************************************************************/ 2597/*****************************************************************************/
2116 2598
2117#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2118 2600
2119static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2120evpipe_init (EV_P) 2603evpipe_init (EV_P)
2121{ 2604{
2122 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2123 { 2606 {
2124 int fds [2]; 2607 int fds [2];
… …
2164inline_speed void 2647inline_speed void
2165evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2166{ 2649{
2167 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2168 2651
2169 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2170 return; 2653 return;
2171 2654
2172 *flag = 1; 2655 *flag = 1;
2173 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2174 2657
… …
2195#endif 2678#endif
2196 { 2679 {
2197#ifdef _WIN32 2680#ifdef _WIN32
2198 WSABUF buf; 2681 WSABUF buf;
2199 DWORD sent; 2682 DWORD sent;
2200 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2201 buf.len = 1; 2684 buf.len = 1;
2202 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2203#else 2686#else
2204 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2205#endif 2688#endif
… …
2251 sig_pending = 0; 2734 sig_pending = 0;
2252 2735
2253 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2254 2737
2255 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2256 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2257 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2258 } 2741 }
2259#endif 2742#endif
2260 2743
2261#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2277} 2760}
2278 2761
2279/*****************************************************************************/ 2762/*****************************************************************************/
2280 2763
2281void 2764void
2282ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2283{ 2766{
2284#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2285 EV_P; 2768 EV_P;
2286 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2287 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2302#endif 2785#endif
2303 2786
2304 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2305} 2788}
2306 2789
2307void noinline 2790ecb_noinline
2791void
2308ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2309{ 2793{
2310 WL w; 2794 WL w;
2311 2795
2312 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2313 return; 2797 return;
2314 2798
2315 --signum; 2799 --signum;
2316 2800
2317#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2318 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* 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 */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2320 2804
2321 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2322 return; 2806 return;
2323#endif 2807#endif
2324 2808
2325 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2326 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2410 2894
2411#endif 2895#endif
2412 2896
2413/*****************************************************************************/ 2897/*****************************************************************************/
2414 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2415#if EV_USE_IOCP 2951#if EV_USE_IOCP
2416# include "ev_iocp.c" 2952# include "ev_iocp.c"
2417#endif 2953#endif
2418#if EV_USE_PORT 2954#if EV_USE_PORT
2419# include "ev_port.c" 2955# include "ev_port.c"
… …
2422# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2423#endif 2959#endif
2424#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2425# include "ev_epoll.c" 2961# include "ev_epoll.c"
2426#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2427#if EV_USE_POLL 2969#if EV_USE_POLL
2428# include "ev_poll.c" 2970# include "ev_poll.c"
2429#endif 2971#endif
2430#if EV_USE_SELECT 2972#if EV_USE_SELECT
2431# include "ev_select.c" 2973# include "ev_select.c"
2432#endif 2974#endif
2433 2975
2434int ecb_cold 2976ecb_cold int
2435ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2436{ 2978{
2437 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2438} 2980}
2439 2981
2440int ecb_cold 2982ecb_cold int
2441ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2442{ 2984{
2443 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2444} 2986}
2445 2987
2446/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2447int inline_size ecb_cold 2989inline_size ecb_cold int
2448enable_secure (void) 2990enable_secure (void)
2449{ 2991{
2450#ifdef _WIN32 2992#ifdef _WIN32
2451 return 0; 2993 return 0;
2452#else 2994#else
2453 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2454 || getgid () != getegid (); 2996 || getgid () != getegid ();
2455#endif 2997#endif
2456} 2998}
2457 2999
2458unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2459ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2460{ 3003{
2461 unsigned int flags = 0; 3004 unsigned int flags = 0;
2462 3005
2463 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2464 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2465 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2466 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2467 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2468 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2469 return flags; 3014 return flags;
2470} 3015}
2471 3016
2472unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2473ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2474{ 3020{
2475 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2476 3022
2477#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2478 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2486#endif 3032#endif
2487#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2488 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2489#endif 3035#endif
2490 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2491 return flags; 3046 return flags;
2492} 3047}
2493 3048
2494unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2495ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2496{ 3052{
2497 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2498 3054
2499 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* 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 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2501 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2502 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2503 return flags; 3066 return flags;
2504} 3067}
2505 3068
2506unsigned int 3069unsigned int
2507ev_backend (EV_P) EV_THROW 3070ev_backend (EV_P) EV_NOEXCEPT
2508{ 3071{
2509 return backend; 3072 return backend;
2510} 3073}
2511 3074
2512#if EV_FEATURE_API 3075#if EV_FEATURE_API
2513unsigned int 3076unsigned int
2514ev_iteration (EV_P) EV_THROW 3077ev_iteration (EV_P) EV_NOEXCEPT
2515{ 3078{
2516 return loop_count; 3079 return loop_count;
2517} 3080}
2518 3081
2519unsigned int 3082unsigned int
2520ev_depth (EV_P) EV_THROW 3083ev_depth (EV_P) EV_NOEXCEPT
2521{ 3084{
2522 return loop_depth; 3085 return loop_depth;
2523} 3086}
2524 3087
2525void 3088void
2526ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2527{ 3090{
2528 io_blocktime = interval; 3091 io_blocktime = interval;
2529} 3092}
2530 3093
2531void 3094void
2532ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2533{ 3096{
2534 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2535} 3098}
2536 3099
2537void 3100void
2538ev_set_userdata (EV_P_ void *data) EV_THROW 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2539{ 3102{
2540 userdata = data; 3103 userdata = data;
2541} 3104}
2542 3105
2543void * 3106void *
2544ev_userdata (EV_P) EV_THROW 3107ev_userdata (EV_P) EV_NOEXCEPT
2545{ 3108{
2546 return userdata; 3109 return userdata;
2547} 3110}
2548 3111
2549void 3112void
2550ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2551{ 3114{
2552 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2553} 3116}
2554 3117
2555void 3118void
2556ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2557{ 3120{
2558 release_cb = release; 3121 release_cb = release;
2559 acquire_cb = acquire; 3122 acquire_cb = acquire;
2560} 3123}
2561#endif 3124#endif
2562 3125
2563/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2564static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2565loop_init (EV_P_ unsigned int flags) EV_THROW 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2566{ 3130{
2567 if (!backend) 3131 if (!backend)
2568 { 3132 {
2569 origflags = flags; 3133 origflags = flags;
2570 3134
… …
2623 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2624#endif 3188#endif
2625#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2626 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2627#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2628 3195
2629 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2630 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2631 3198
2632#if EV_USE_IOCP 3199#if EV_USE_IOCP
2633 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2634#endif 3201#endif
2635#if EV_USE_PORT 3202#if EV_USE_PORT
2636 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2637#endif 3204#endif
2638#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2639 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2640#endif 3213#endif
2641#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2642 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2643#endif 3216#endif
2644#if EV_USE_POLL 3217#if EV_USE_POLL
2645 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2646#endif 3219#endif
2647#if EV_USE_SELECT 3220#if EV_USE_SELECT
2648 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2649#endif 3222#endif
2650 3223
2651 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2652 3225
2653#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2656#endif 3229#endif
2657 } 3230 }
2658} 3231}
2659 3232
2660/* free up a loop structure */ 3233/* free up a loop structure */
2661void ecb_cold 3234ecb_cold
3235void
2662ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2663{ 3237{
2664 int i; 3238 int i;
2665 3239
2666#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2669 return; 3243 return;
2670#endif 3244#endif
2671 3245
2672#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2673 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2674 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2675 { 3249 {
2676 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2677 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2678 } 3252 }
2679#endif 3253#endif
… …
2698#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2699 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2700 close (sigfd); 3274 close (sigfd);
2701#endif 3275#endif
2702 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2703#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2704 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2705 close (fs_fd); 3284 close (fs_fd);
2706#endif 3285#endif
2707 3286
2708 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2709 close (backend_fd); 3288 close (backend_fd);
2710 3289
2711#if EV_USE_IOCP 3290#if EV_USE_IOCP
2712 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2713#endif 3292#endif
2714#if EV_USE_PORT 3293#if EV_USE_PORT
2715 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2716#endif 3295#endif
2717#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2718 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2719#endif 3304#endif
2720#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2721 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2722#endif 3307#endif
2723#if EV_USE_POLL 3308#if EV_USE_POLL
2724 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2725#endif 3310#endif
2726#if EV_USE_SELECT 3311#if EV_USE_SELECT
2727 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2728#endif 3313#endif
2729 3314
2730 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2731 { 3316 {
2732 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
2774 3359
2775inline_size void 3360inline_size void
2776loop_fork (EV_P) 3361loop_fork (EV_P)
2777{ 3362{
2778#if EV_USE_PORT 3363#if EV_USE_PORT
2779 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2780#endif 3365#endif
2781#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
2782 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2783#endif 3374#endif
2784#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
2785 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2786#endif 3377#endif
2787#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2788 infy_fork (EV_A); 3379 infy_fork (EV_A);
2789#endif 3380#endif
2790 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
2791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2792 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
2793 { 3405 {
2794 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2795 3407
2796 ev_ref (EV_A); 3408 ev_ref (EV_A);
2797 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
2798 3410
2799 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
2800 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
2801 3413
2802 evpipe_init (EV_A); 3414 evpipe_init (EV_A);
2803 /* iterate over everything, in case we missed something before */ 3415 /* iterate over everything, in case we missed something before */
2804 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3417 }
3418 #endif
2805 } 3419 }
2806#endif
2807 3420
2808 postfork = 0; 3421 postfork = 0;
2809} 3422}
2810 3423
2811#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
2812 3425
3426ecb_cold
2813struct ev_loop * ecb_cold 3427struct ev_loop *
2814ev_loop_new (unsigned int flags) EV_THROW 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
2815{ 3429{
2816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2817 3431
2818 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
2819 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
2826} 3440}
2827 3441
2828#endif /* multiplicity */ 3442#endif /* multiplicity */
2829 3443
2830#if EV_VERIFY 3444#if EV_VERIFY
2831static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
2832verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
2833{ 3448{
2834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2835 3450
2836 if (w->pending) 3451 if (w->pending)
2837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2838} 3453}
2839 3454
2840static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
2841verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
2842{ 3458{
2843 int i; 3459 int i;
2844 3460
2845 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2850 3466
2851 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2852 } 3468 }
2853} 3469}
2854 3470
2855static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
2856array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
2857{ 3474{
2858 while (cnt--) 3475 while (cnt--)
2859 { 3476 {
2860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2863} 3480}
2864#endif 3481#endif
2865 3482
2866#if EV_FEATURE_API 3483#if EV_FEATURE_API
2867void ecb_cold 3484void ecb_cold
2868ev_verify (EV_P) EV_THROW 3485ev_verify (EV_P) EV_NOEXCEPT
2869{ 3486{
2870#if EV_VERIFY 3487#if EV_VERIFY
2871 int i; 3488 int i;
2872 WL w, w2; 3489 WL w, w2;
2873 3490
… …
2949#endif 3566#endif
2950} 3567}
2951#endif 3568#endif
2952 3569
2953#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
2954struct ev_loop * ecb_cold 3572struct ev_loop *
2955#else 3573#else
2956int 3574int
2957#endif 3575#endif
2958ev_default_loop (unsigned int flags) EV_THROW 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
2959{ 3577{
2960 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
2961 { 3579 {
2962#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
2963 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2982 3600
2983 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
2984} 3602}
2985 3603
2986void 3604void
2987ev_loop_fork (EV_P) EV_THROW 3605ev_loop_fork (EV_P) EV_NOEXCEPT
2988{ 3606{
2989 postfork = 1; 3607 postfork = 1;
2990} 3608}
2991 3609
2992/*****************************************************************************/ 3610/*****************************************************************************/
… …
2996{ 3614{
2997 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
2998} 3616}
2999 3617
3000unsigned int 3618unsigned int
3001ev_pending_count (EV_P) EV_THROW 3619ev_pending_count (EV_P) EV_NOEXCEPT
3002{ 3620{
3003 int pri; 3621 int pri;
3004 unsigned int count = 0; 3622 unsigned int count = 0;
3005 3623
3006 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
3007 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
3008 3626
3009 return count; 3627 return count;
3010} 3628}
3011 3629
3012void noinline 3630ecb_noinline
3631void
3013ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
3014{ 3633{
3015 pendingpri = NUMPRI; 3634 pendingpri = NUMPRI;
3016 3635
3017 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3636 do
3018 { 3637 {
3019 --pendingpri; 3638 --pendingpri;
3020 3639
3640 /* pendingpri possibly gets modified in the inner loop */
3021 while (pendingcnt [pendingpri]) 3641 while (pendingcnt [pendingpri])
3022 { 3642 {
3023 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3024 3644
3025 p->w->pending = 0; 3645 p->w->pending = 0;
3026 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
3027 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3028 } 3648 }
3029 } 3649 }
3650 while (pendingpri);
3030} 3651}
3031 3652
3032#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
3033/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
3034/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
3035inline_size void 3656inline_size void
3036idle_reify (EV_P) 3657idle_reify (EV_P)
3037{ 3658{
3038 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
3039 { 3660 {
3040 int pri; 3661 int pri;
3041 3662
3042 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
3043 { 3664 {
… …
3073 { 3694 {
3074 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
3075 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
3076 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
3077 3698
3078 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3079 3700
3080 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
3081 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
3082 } 3703 }
3083 else 3704 else
… …
3092 } 3713 }
3093} 3714}
3094 3715
3095#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3096 3717
3097static void noinline 3718ecb_noinline
3719static void
3098periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
3099{ 3721{
3100 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 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); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3102 3724
… …
3104 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
3105 { 3727 {
3106 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
3107 3729
3108 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
3109 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
3110 { 3732 {
3111 at = ev_rt_now; 3733 at = ev_rt_now;
3112 break; 3734 break;
3113 } 3735 }
3114 3736
… …
3160 } 3782 }
3161} 3783}
3162 3784
3163/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
3164/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
3165static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
3166periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
3167{ 3790{
3168 int i; 3791 int i;
3169 3792
3170 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
3183 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
3184} 3807}
3185#endif 3808#endif
3186 3809
3187/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
3188static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
3189timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
3190{ 3814{
3191 int i; 3815 int i;
3192 3816
3193 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
3202/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
3203inline_speed void 3827inline_speed void
3204time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
3205{ 3829{
3206#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
3207 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
3208 { 3832 {
3209 int i; 3833 int i;
3210 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
3211 3835
3212 mn_now = get_clock (); 3836 mn_now = get_clock ();
3213 3837
3214 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3215 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
3216 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3217 { 3841 {
3218 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
3219 return; 3843 return;
3220 } 3844 }
3221 3845
… …
3235 ev_tstamp diff; 3859 ev_tstamp diff;
3236 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
3237 3861
3238 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
3239 3863
3240 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3241 return; /* all is well */ 3865 return; /* all is well */
3242 3866
3243 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
3244 mn_now = get_clock (); 3868 mn_now = get_clock ();
3245 now_floor = mn_now; 3869 now_floor = mn_now;
… …
3254 else 3878 else
3255#endif 3879#endif
3256 { 3880 {
3257 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
3258 3882
3259 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3260 { 3884 {
3261 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* 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); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3263#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
3264 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
3287#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
3288 ev_verify (EV_A); 3912 ev_verify (EV_A);
3289#endif 3913#endif
3290 3914
3291#ifndef _WIN32 3915#ifndef _WIN32
3292 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3293 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
3294 { 3918 {
3295 curpid = getpid (); 3919 curpid = getpid ();
3296 postfork = 1; 3920 postfork = 1;
3297 } 3921 }
3298#endif 3922#endif
3299 3923
3300#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
3301 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
3302 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
3303 if (forkcnt) 3927 if (forkcnt)
3304 { 3928 {
3305 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3306 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
3307 } 3931 }
3308#endif 3932#endif
3309 3933
3310#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
3311 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
3312 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
3313 { 3937 {
3314 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3315 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
3316 } 3940 }
3317#endif 3941#endif
3318 3942
3319 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
3320 break; 3944 break;
3321 3945
3322 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
3323 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
3324 loop_fork (EV_A); 3948 loop_fork (EV_A);
3325 3949
3326 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
3327 fd_reify (EV_A); 3951 fd_reify (EV_A);
3328 3952
… …
3333 3957
3334 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
3335 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
3336 3960
3337 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3338 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3339 3963
3340 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3341 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3342 3966
3343 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3344 3968
3345 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3346 { 3970 {
3347 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3348 3972
3349 if (timercnt) 3973 if (timercnt)
3350 { 3974 {
3351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3352 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3359 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3360 } 3984 }
3361#endif 3985#endif
3362 3986
3363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3364 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3365 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3366 3990
3367 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3368 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3369 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3370 waittime = backend_mintime; 3999 : backend_mintime;
3371 4000
3372 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3373 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3374 { 4003 {
3375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3376 4005
3377 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3378 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3379 4008
3380 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3381 { 4010 {
3382 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3383 waittime -= sleeptime; 4012 waittime -= sleeptime;
3384 } 4013 }
3385 } 4014 }
… …
3399 { 4028 {
3400 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 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); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3402 } 4031 }
3403 4032
3404
3405 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3406 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3407 } 4035 }
3408 4036
3409 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3417 idle_reify (EV_A); 4045 idle_reify (EV_A);
3418#endif 4046#endif
3419 4047
3420#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3421 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3422 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3423 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3424#endif 4052#endif
3425 4053
3426 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3427 } 4055 }
3428 while (expect_true ( 4056 while (ecb_expect_true (
3429 activecnt 4057 activecnt
3430 && !loop_done 4058 && !loop_done
3431 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3432 )); 4060 ));
3433 4061
… …
3440 4068
3441 return activecnt; 4069 return activecnt;
3442} 4070}
3443 4071
3444void 4072void
3445ev_break (EV_P_ int how) EV_THROW 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3446{ 4074{
3447 loop_done = how; 4075 loop_done = how;
3448} 4076}
3449 4077
3450void 4078void
3451ev_ref (EV_P) EV_THROW 4079ev_ref (EV_P) EV_NOEXCEPT
3452{ 4080{
3453 ++activecnt; 4081 ++activecnt;
3454} 4082}
3455 4083
3456void 4084void
3457ev_unref (EV_P) EV_THROW 4085ev_unref (EV_P) EV_NOEXCEPT
3458{ 4086{
3459 --activecnt; 4087 --activecnt;
3460} 4088}
3461 4089
3462void 4090void
3463ev_now_update (EV_P) EV_THROW 4091ev_now_update (EV_P) EV_NOEXCEPT
3464{ 4092{
3465 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3466} 4094}
3467 4095
3468void 4096void
3469ev_suspend (EV_P) EV_THROW 4097ev_suspend (EV_P) EV_NOEXCEPT
3470{ 4098{
3471 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3472} 4100}
3473 4101
3474void 4102void
3475ev_resume (EV_P) EV_THROW 4103ev_resume (EV_P) EV_NOEXCEPT
3476{ 4104{
3477 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3478 4106
3479 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3480 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3497inline_size void 4125inline_size void
3498wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3499{ 4127{
3500 while (*head) 4128 while (*head)
3501 { 4129 {
3502 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3503 { 4131 {
3504 *head = elem->next; 4132 *head = elem->next;
3505 break; 4133 break;
3506 } 4134 }
3507 4135
… …
3519 w->pending = 0; 4147 w->pending = 0;
3520 } 4148 }
3521} 4149}
3522 4150
3523int 4151int
3524ev_clear_pending (EV_P_ void *w) EV_THROW 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3525{ 4153{
3526 W w_ = (W)w; 4154 W w_ = (W)w;
3527 int pending = w_->pending; 4155 int pending = w_->pending;
3528 4156
3529 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3530 { 4158 {
3531 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3532 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3533 w_->pending = 0; 4161 w_->pending = 0;
3534 return p->events; 4162 return p->events;
… …
3561 w->active = 0; 4189 w->active = 0;
3562} 4190}
3563 4191
3564/*****************************************************************************/ 4192/*****************************************************************************/
3565 4193
3566void noinline 4194ecb_noinline
4195void
3567ev_io_start (EV_P_ ev_io *w) EV_THROW 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3568{ 4197{
3569 int fd = w->fd; 4198 int fd = w->fd;
3570 4199
3571 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3572 return; 4201 return;
3573 4202
3574 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 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)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3576 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3577 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3578 4210
3579 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3580 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3581 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
3582 4214
3583 /* common bug, apparently */ 4215 /* common bug, apparently */
3584 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3585 4217
… …
3587 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3588 4220
3589 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3590} 4222}
3591 4223
3592void noinline 4224ecb_noinline
4225void
3593ev_io_stop (EV_P_ ev_io *w) EV_THROW 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3594{ 4227{
3595 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3596 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3597 return; 4230 return;
3598 4231
3599 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3600 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3601 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3602 4238
3603 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3604 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3605 4241
3606 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3607 4243
3608 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3609} 4245}
3610 4246
3611void noinline 4247ecb_noinline
4248void
3612ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3613{ 4250{
3614 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3615 return; 4252 return;
3616 4253
3617 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3618 4255
3619 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3620 4257
3621 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3622 4259
3623 ++timercnt; 4260 ++timercnt;
3624 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3625 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3626 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3627 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3628 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3629 4266
3630 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3631 4268
3632 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3633} 4270}
3634 4271
3635void noinline 4272ecb_noinline
4273void
3636ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3637{ 4275{
3638 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3639 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3640 return; 4278 return;
3641 4279
3642 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3643 4281
3644 { 4282 {
… …
3646 4284
3647 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3648 4286
3649 --timercnt; 4287 --timercnt;
3650 4288
3651 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3652 { 4290 {
3653 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3654 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3655 } 4293 }
3656 } 4294 }
… …
3660 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3661 4299
3662 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3663} 4301}
3664 4302
3665void noinline 4303ecb_noinline
4304void
3666ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3667{ 4306{
3668 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3669 4308
3670 clear_pending (EV_A_ (W)w); 4309 clear_pending (EV_A_ (W)w);
3671 4310
… …
3688 4327
3689 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3690} 4329}
3691 4330
3692ev_tstamp 4331ev_tstamp
3693ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3694{ 4333{
3695 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3696} 4335}
3697 4336
3698#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3699void noinline 4338ecb_noinline
4339void
3700ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3701{ 4341{
3702 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3703 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3704 4349
3705 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3706 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3707 else if (w->interval) 4352 else if (w->interval)
3708 { 4353 {
… …
3714 4359
3715 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3716 4361
3717 ++periodiccnt; 4362 ++periodiccnt;
3718 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3719 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3720 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3721 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3722 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3723 4368
3724 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3725 4370
3726 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3727} 4372}
3728 4373
3729void noinline 4374ecb_noinline
4375void
3730ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3731{ 4377{
3732 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3733 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3734 return; 4380 return;
3735 4381
3736 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3737 4383
3738 { 4384 {
… …
3740 4386
3741 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3742 4388
3743 --periodiccnt; 4389 --periodiccnt;
3744 4390
3745 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
3746 { 4392 {
3747 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
3748 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
3749 } 4395 }
3750 } 4396 }
… …
3752 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
3753 4399
3754 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
3755} 4401}
3756 4402
3757void noinline 4403ecb_noinline
4404void
3758ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3759{ 4406{
3760 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
3761 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
3762 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
3763} 4410}
… …
3767# define SA_RESTART 0 4414# define SA_RESTART 0
3768#endif 4415#endif
3769 4416
3770#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
3771 4418
3772void noinline 4419ecb_noinline
4420void
3773ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3774{ 4422{
3775 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
3776 return; 4424 return;
3777 4425
3778 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3779 4427
3780#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
… …
3849 } 4497 }
3850 4498
3851 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3852} 4500}
3853 4501
3854void noinline 4502ecb_noinline
4503void
3855ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3856{ 4505{
3857 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3858 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3859 return; 4508 return;
3860 4509
3861 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3862 4511
3863 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3891#endif 4540#endif
3892 4541
3893#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
3894 4543
3895void 4544void
3896ev_child_start (EV_P_ ev_child *w) EV_THROW 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3897{ 4546{
3898#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
3899 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3900#endif 4549#endif
3901 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
3902 return; 4551 return;
3903 4552
3904 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3905 4554
3906 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
3908 4557
3909 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
3910} 4559}
3911 4560
3912void 4561void
3913ev_child_stop (EV_P_ ev_child *w) EV_THROW 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3914{ 4563{
3915 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
3916 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
3917 return; 4566 return;
3918 4567
3919 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3920 4569
3921 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3935 4584
3936#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
3937#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3938#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
3939 4588
3940static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3941 4590
3942#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
3943 4592
3944/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* 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) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3946 4595
3947static void noinline 4596ecb_noinline
4597static void
3948infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
3949{ 4599{
3950 w->wd = inotify_add_watch (fs_fd, w->path, 4600 w->wd = inotify_add_watch (fs_fd, w->path,
3951 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3952 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4016 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4017 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
4018 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4019} 4669}
4020 4670
4021static void noinline 4671ecb_noinline
4672static void
4022infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
4023{ 4674{
4024 int slot; 4675 int slot;
4025 int wd = w->wd; 4676 int wd = w->wd;
4026 4677
… …
4033 4684
4034 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
4035 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
4036} 4687}
4037 4688
4038static void noinline 4689ecb_noinline
4690static void
4039infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4040{ 4692{
4041 if (slot < 0) 4693 if (slot < 0)
4042 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
4043 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4079 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4080 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
4081 } 4733 }
4082} 4734}
4083 4735
4084inline_size void ecb_cold 4736inline_size ecb_cold
4737void
4085ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
4086{ 4739{
4087 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
4088 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4089 */ 4742 */
… …
4179#else 4832#else
4180# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
4181#endif 4834#endif
4182 4835
4183void 4836void
4184ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4185{ 4838{
4186 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
4187 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
4188 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
4189 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
4190} 4843}
4191 4844
4192static void noinline 4845ecb_noinline
4846static void
4193stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4194{ 4848{
4195 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4196 4850
4197 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
4228 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
4229 } 4883 }
4230} 4884}
4231 4885
4232void 4886void
4233ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4234{ 4888{
4235 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
4236 return; 4890 return;
4237 4891
4238 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
4239 4893
4240 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4259 4913
4260 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
4261} 4915}
4262 4916
4263void 4917void
4264ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4265{ 4919{
4266 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
4267 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
4268 return; 4922 return;
4269 4923
4270 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
4271 4925
4272#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
4285} 4939}
4286#endif 4940#endif
4287 4941
4288#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
4289void 4943void
4290ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4291{ 4945{
4292 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
4293 return; 4947 return;
4294 4948
4295 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
4296 4950
4297 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
4300 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
4301 4955
4302 ++idleall; 4956 ++idleall;
4303 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
4304 4958
4305 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4306 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
4307 } 4961 }
4308 4962
4309 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
4310} 4964}
4311 4965
4312void 4966void
4313ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4314{ 4968{
4315 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
4316 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
4317 return; 4971 return;
4318 4972
4319 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
4320 4974
4321 { 4975 {
… …
4332} 4986}
4333#endif 4987#endif
4334 4988
4335#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
4336void 4990void
4337ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4338{ 4992{
4339 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4340 return; 4994 return;
4341 4995
4342 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4343 4997
4344 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
4345 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4346 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
4347 5001
4348 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4349} 5003}
4350 5004
4351void 5005void
4352ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4353{ 5007{
4354 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4355 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4356 return; 5010 return;
4357 5011
4358 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4359 5013
4360 { 5014 {
… …
4370} 5024}
4371#endif 5025#endif
4372 5026
4373#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4374void 5028void
4375ev_check_start (EV_P_ ev_check *w) EV_THROW 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4376{ 5030{
4377 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4378 return; 5032 return;
4379 5033
4380 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4381 5035
4382 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4383 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4384 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4385 5039
4386 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4387} 5041}
4388 5042
4389void 5043void
4390ev_check_stop (EV_P_ ev_check *w) EV_THROW 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4391{ 5045{
4392 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4393 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4394 return; 5048 return;
4395 5049
4396 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4397 5051
4398 { 5052 {
… …
4407 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4408} 5062}
4409#endif 5063#endif
4410 5064
4411#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4412void noinline 5066ecb_noinline
5067void
4413ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4414{ 5069{
4415 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4416} 5071}
4417 5072
4418static void 5073static void
… …
4440 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4441 } 5096 }
4442 } 5097 }
4443} 5098}
4444 5099
5100#if EV_FORK_ENABLE
4445static void 5101static void
4446embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4447{ 5103{
4448 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4449 5105
… …
4456 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4457 } 5113 }
4458 5114
4459 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4460} 5116}
5117#endif
4461 5118
4462#if 0 5119#if 0
4463static void 5120static void
4464embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4465{ 5122{
4466 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4467} 5124}
4468#endif 5125#endif
4469 5126
4470void 5127void
4471ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4472{ 5129{
4473 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4474 return; 5131 return;
4475 5132
4476 { 5133 {
4477 EV_P = w->other; 5134 EV_P = w->other;
4478 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4486 5143
4487 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4488 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4489 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4490 5147
5148#if EV_FORK_ENABLE
4491 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4492 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4493 5152
4494 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4495 5154
4496 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4497 5156
4498 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4499} 5158}
4500 5159
4501void 5160void
4502ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4503{ 5162{
4504 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4505 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4506 return; 5165 return;
4507 5166
4508 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4509 5168
4510 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4511 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4512 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4513 5174
4514 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4515 5176
4516 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4517} 5178}
4518#endif 5179#endif
4519 5180
4520#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4521void 5182void
4522ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4523{ 5184{
4524 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4525 return; 5186 return;
4526 5187
4527 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4528 5189
4529 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4530 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4531 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4532 5193
4533 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4534} 5195}
4535 5196
4536void 5197void
4537ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4538{ 5199{
4539 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4540 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4541 return; 5202 return;
4542 5203
4543 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4544 5205
4545 { 5206 {
… …
4555} 5216}
4556#endif 5217#endif
4557 5218
4558#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4559void 5220void
4560ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4561{ 5222{
4562 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4563 return; 5224 return;
4564 5225
4565 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4566 5227
4567 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4568 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4569 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4570 5231
4571 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4572 ev_unref (EV_A); 5233 ev_unref (EV_A);
4573 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4574} 5235}
4575 5236
4576void 5237void
4577ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4578{ 5239{
4579 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4580 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4581 return; 5242 return;
4582 5243
4583 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4584 ev_ref (EV_A); 5245 ev_ref (EV_A);
4585 5246
… …
4596} 5257}
4597#endif 5258#endif
4598 5259
4599#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4600void 5261void
4601ev_async_start (EV_P_ ev_async *w) EV_THROW 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4602{ 5263{
4603 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4604 return; 5265 return;
4605 5266
4606 w->sent = 0; 5267 w->sent = 0;
4607 5268
4608 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4609 5270
4610 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4611 5272
4612 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4613 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4614 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4615 5276
4616 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4617} 5278}
4618 5279
4619void 5280void
4620ev_async_stop (EV_P_ ev_async *w) EV_THROW 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4621{ 5282{
4622 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4623 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4624 return; 5285 return;
4625 5286
4626 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4627 5288
4628 { 5289 {
… …
4636 5297
4637 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4638} 5299}
4639 5300
4640void 5301void
4641ev_async_send (EV_P_ ev_async *w) EV_THROW 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4642{ 5303{
4643 w->sent = 1; 5304 w->sent = 1;
4644 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4645} 5306}
4646#endif 5307#endif
… …
4683 5344
4684 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4685} 5346}
4686 5347
4687void 5348void
4688ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4689{ 5350{
4690 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 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 5352
4698 once->cb = cb; 5353 once->cb = cb;
4699 once->arg = arg; 5354 once->arg = arg;
4700 5355
4701 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4714} 5369}
4715 5370
4716/*****************************************************************************/ 5371/*****************************************************************************/
4717 5372
4718#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4719void ecb_cold 5374ecb_cold
5375void
4720ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4721{ 5377{
4722 int i, j; 5378 int i, j;
4723 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4724 5380
4725 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))

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