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Comparing libev/ev.c (file contents):
Revision 1.463 by root, Thu Jan 16 11:51:05 2014 UTC vs.
Revision 1.503 by root, Wed Jul 3 21:52:04 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
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
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
208# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
210# endif 229# endif
211# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
212#endif 231#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
221 232
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
223 234
224/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 236#if defined EV_NSIG
… …
256# else 267# else
257# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
258# endif 269# endif
259#endif 270#endif
260 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
261#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
263# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
264# else 284# else
265# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
… …
304 324
305#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
306# define EV_USE_PORT 0 326# define EV_USE_PORT 0
307#endif 327#endif
308 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
337#ifndef EV_USE_IOURING
338# if __linux
339# define EV_USE_IOURING 0
340# else
341# define EV_USE_IOURING 0
342# endif
343#endif
344
309#ifndef EV_USE_INOTIFY 345#ifndef EV_USE_INOTIFY
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 346# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
311# define EV_USE_INOTIFY EV_FEATURE_OS 347# define EV_USE_INOTIFY EV_FEATURE_OS
312# else 348# else
313# define EV_USE_INOTIFY 0 349# define EV_USE_INOTIFY 0
… …
354 390
355#ifndef EV_HEAP_CACHE_AT 391#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 392# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 393#endif
358 394
359#ifdef ANDROID 395#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 396/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 397# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 398# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 399/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL 400# undef EV_USE_CLOCK_SYSCALL
… …
378# include <sys/syscall.h> 414# include <sys/syscall.h>
379# ifdef SYS_clock_gettime 415# ifdef SYS_clock_gettime
380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 416# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
381# undef EV_USE_MONOTONIC 417# undef EV_USE_MONOTONIC
382# define EV_USE_MONOTONIC 1 418# define EV_USE_MONOTONIC 1
419# define EV_NEED_SYSCALL 1
383# else 420# else
384# undef EV_USE_CLOCK_SYSCALL 421# undef EV_USE_CLOCK_SYSCALL
385# define EV_USE_CLOCK_SYSCALL 0 422# define EV_USE_CLOCK_SYSCALL 0
386# endif 423# endif
387#endif 424#endif
… …
405 442
406#if !EV_USE_NANOSLEEP 443#if !EV_USE_NANOSLEEP
407/* hp-ux has it in sys/time.h, which we unconditionally include above */ 444/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux 445# if !defined _WIN32 && !defined __hpux
409# include <sys/select.h> 446# include <sys/select.h>
447# endif
448#endif
449
450#if EV_USE_LINUXAIO
451# include <sys/syscall.h>
452# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
453# define EV_NEED_SYSCALL 1
454# else
455# undef EV_USE_LINUXAIO
456# define EV_USE_LINUXAIO 0
457# endif
458#endif
459
460#if EV_USE_IOURING
461# include <sys/syscall.h>
462# if !SYS_io_uring_setup && __linux && !__alpha
463# define SYS_io_uring_setup 425
464# define SYS_io_uring_enter 426
465# define SYS_io_uring_wregister 427
466# endif
467# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
468# define EV_NEED_SYSCALL 1
469# else
470# undef EV_USE_IOURING
471# define EV_USE_IOURING 0
410# endif 472# endif
411#endif 473#endif
412 474
413#if EV_USE_INOTIFY 475#if EV_USE_INOTIFY
414# include <sys/statfs.h> 476# include <sys/statfs.h>
… …
456 uint32_t ssi_signo; 518 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)]; 519 char pad[128 - sizeof (uint32_t)];
458}; 520};
459#endif 521#endif
460 522
461/**/ 523/*****************************************************************************/
462 524
463#if EV_VERIFY >= 3 525#if EV_VERIFY >= 3
464# define EV_FREQUENT_CHECK ev_verify (EV_A) 526# define EV_FREQUENT_CHECK ev_verify (EV_A)
465#else 527#else
466# define EV_FREQUENT_CHECK do { } while (0) 528# define EV_FREQUENT_CHECK do { } while (0)
… …
471 * This value is good at least till the year 4000. 533 * This value is good at least till the year 4000.
472 */ 534 */
473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 535#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 536/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
475 537
476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 538#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) */ 539#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
540
541/* find a portable timestamp that is "alawys" in the future but fits into time_t.
542 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
543 * and sizes large than 32 bit, but and maybe the unlikely loating point time_t */
544#define EV_TSTAMP_HUGE \
545 (sizeof (time_t) >= 8 ? 10000000000000. \
546 : 0 < (time_t)4294967295 ? 4294967295. \
547 : 2147483647.) \
478 548
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 549#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) 550#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481 551
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 552/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */ 553/* ECB.H BEGIN */
484/* 554/*
485 * libecb - http://software.schmorp.de/pkg/libecb 555 * libecb - http://software.schmorp.de/pkg/libecb
486 * 556 *
487 * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de> 557 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 558 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 559 * All rights reserved.
490 * 560 *
491 * Redistribution and use in source and binary forms, with or without modifica- 561 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met: 562 * tion, are permitted provided that the following conditions are met:
… …
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 576 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 577 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 578 * 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 579 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE. 580 * OF THE POSSIBILITY OF SUCH DAMAGE.
581 *
582 * Alternatively, the contents of this file may be used under the terms of
583 * the GNU General Public License ("GPL") version 2 or any later version,
584 * in which case the provisions of the GPL are applicable instead of
585 * the above. If you wish to allow the use of your version of this file
586 * only under the terms of the GPL and not to allow others to use your
587 * version of this file under the BSD license, indicate your decision
588 * by deleting the provisions above and replace them with the notice
589 * and other provisions required by the GPL. If you do not delete the
590 * provisions above, a recipient may use your version of this file under
591 * either the BSD or the GPL.
511 */ 592 */
512 593
513#ifndef ECB_H 594#ifndef ECB_H
514#define ECB_H 595#define ECB_H
515 596
516/* 16 bits major, 16 bits minor */ 597/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003 598#define ECB_VERSION 0x00010006
518 599
519#ifdef _WIN32 600#ifdef _WIN32
520 typedef signed char int8_t; 601 typedef signed char int8_t;
521 typedef unsigned char uint8_t; 602 typedef unsigned char uint8_t;
522 typedef signed short int16_t; 603 typedef signed short int16_t;
… …
539 typedef uint32_t uintptr_t; 620 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t; 621 typedef int32_t intptr_t;
541 #endif 622 #endif
542#else 623#else
543 #include <inttypes.h> 624 #include <inttypes.h>
544 #if UINTMAX_MAX > 0xffffffffU 625 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
545 #define ECB_PTRSIZE 8 626 #define ECB_PTRSIZE 8
546 #else 627 #else
547 #define ECB_PTRSIZE 4 628 #define ECB_PTRSIZE 4
548 #endif 629 #endif
549#endif 630#endif
550 631
632#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
633#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
634
551/* work around x32 idiocy by defining proper macros */ 635/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 636#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
553 #if _ILP32 637 #if _ILP32
554 #define ECB_AMD64_X32 1 638 #define ECB_AMD64_X32 1
555 #else 639 #else
556 #define ECB_AMD64 1 640 #define ECB_AMD64 1
557 #endif 641 #endif
… …
562 * causing enormous grief in return for some better fake benchmark numbers. 646 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so. 647 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have 648 * 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. 649 * an issue with that they should have done it right in the first place.
566 */ 650 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 651#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0 652 #define ECB_GCC_VERSION(major,minor) 0
570 #else 653#else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 654 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif 655#endif
573#endif
574 656
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 657#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
576#define ECB_C99 (__STDC_VERSION__ >= 199901L) 658
577#define ECB_C11 (__STDC_VERSION__ >= 201112L) 659#if __clang__ && defined __has_builtin
660 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
661#else
662 #define ECB_CLANG_BUILTIN(x) 0
663#endif
664
665#if __clang__ && defined __has_extension
666 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
667#else
668 #define ECB_CLANG_EXTENSION(x) 0
669#endif
670
578#define ECB_CPP (__cplusplus+0) 671#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L) 672#define ECB_CPP11 (__cplusplus >= 201103L)
673#define ECB_CPP14 (__cplusplus >= 201402L)
674#define ECB_CPP17 (__cplusplus >= 201703L)
675
676#if ECB_CPP
677 #define ECB_C 0
678 #define ECB_STDC_VERSION 0
679#else
680 #define ECB_C 1
681 #define ECB_STDC_VERSION __STDC_VERSION__
682#endif
683
684#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
685#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
686#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
580 687
581#if ECB_CPP 688#if ECB_CPP
582 #define ECB_EXTERN_C extern "C" 689 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 690 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END } 691 #define ECB_EXTERN_C_END }
… …
599 706
600#if ECB_NO_SMP 707#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0) 708 #define ECB_MEMORY_FENCE do { } while (0)
602#endif 709#endif
603 710
711/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
712#if __xlC__ && ECB_CPP
713 #include <builtins.h>
714#endif
715
716#if 1400 <= _MSC_VER
717 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
718#endif
719
604#ifndef ECB_MEMORY_FENCE 720#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 721 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
722 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
606 #if __i386 || __i386__ 723 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 724 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 725 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 726 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 727 #elif ECB_GCC_AMD64
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 729 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 730 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 731 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
733 #elif defined __ARM_ARCH_2__ \
734 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
735 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
736 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
737 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
738 || defined __ARM_ARCH_5TEJ__
739 /* 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__ \ 740 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 741 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
742 || defined __ARM_ARCH_6T2__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 743 #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__ \ 744 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 745 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 746 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
747 #elif __aarch64__
748 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
622 #elif (__sparc || __sparc__) && !__sparcv8 749 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 750 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 751 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 752 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__ 753 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 754 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
648 775
649#ifndef ECB_MEMORY_FENCE 776#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7) 777 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */ 778 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 779 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
780 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
781 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
782 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
653 783
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 784 #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. 785 /* see comment below (stdatomic.h) about the C11 memory model. */
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 786 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */ 787 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
788 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
789 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
662 790
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 791 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize () 792 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 793 #elif _MSC_VER >= 1500 /* VC++ 2008 */
666 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 794 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
676 #elif defined _WIN32 804 #elif defined _WIN32
677 #include <WinNT.h> 805 #include <WinNT.h>
678 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 806 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
679 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 807 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
680 #include <mbarrier.h> 808 #include <mbarrier.h>
681 #define ECB_MEMORY_FENCE __machine_rw_barrier () 809 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
682 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 810 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
683 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 811 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
812 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
684 #elif __xlC__ 813 #elif __xlC__
685 #define ECB_MEMORY_FENCE __sync () 814 #define ECB_MEMORY_FENCE __sync ()
686 #endif 815 #endif
687#endif 816#endif
688 817
689#ifndef ECB_MEMORY_FENCE 818#ifndef ECB_MEMORY_FENCE
690 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 819 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
691 /* we assume that these memory fences work on all variables/all memory accesses, */ 820 /* we assume that these memory fences work on all variables/all memory accesses, */
692 /* not just C11 atomics and atomic accesses */ 821 /* not just C11 atomics and atomic accesses */
693 #include <stdatomic.h> 822 #include <stdatomic.h>
694 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
695 /* any fence other than seq_cst, which isn't very efficient for us. */
696 /* Why that is, we don't know - either the C11 memory model is quite useless */
697 /* for most usages, or gcc and clang have a bug */
698 /* I *currently* lean towards the latter, and inefficiently implement */
699 /* all three of ecb's fences as a seq_cst fence */
700 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 823 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
824 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
825 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
701 #endif 826 #endif
702#endif 827#endif
703 828
704#ifndef ECB_MEMORY_FENCE 829#ifndef ECB_MEMORY_FENCE
705 #if !ECB_AVOID_PTHREADS 830 #if !ECB_AVOID_PTHREADS
… …
725 850
726#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 851#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
727 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 852 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
728#endif 853#endif
729 854
855#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
856 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
857#endif
858
730/*****************************************************************************/ 859/*****************************************************************************/
731 860
732#if __cplusplus 861#if ECB_CPP
733 #define ecb_inline static inline 862 #define ecb_inline static inline
734#elif ECB_GCC_VERSION(2,5) 863#elif ECB_GCC_VERSION(2,5)
735 #define ecb_inline static __inline__ 864 #define ecb_inline static __inline__
736#elif ECB_C99 865#elif ECB_C99
737 #define ecb_inline static inline 866 #define ecb_inline static inline
… …
751 880
752#define ECB_CONCAT_(a, b) a ## b 881#define ECB_CONCAT_(a, b) a ## b
753#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 882#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
754#define ECB_STRINGIFY_(a) # a 883#define ECB_STRINGIFY_(a) # a
755#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 884#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
885#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
756 886
757#define ecb_function_ ecb_inline 887#define ecb_function_ ecb_inline
758 888
759#if ECB_GCC_VERSION(3,1) 889#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
760 #define ecb_attribute(attrlist) __attribute__(attrlist) 890 #define ecb_attribute(attrlist) __attribute__ (attrlist)
891#else
892 #define ecb_attribute(attrlist)
893#endif
894
895#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
761 #define ecb_is_constant(expr) __builtin_constant_p (expr) 896 #define ecb_is_constant(expr) __builtin_constant_p (expr)
897#else
898 /* possible C11 impl for integral types
899 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
900 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
901
902 #define ecb_is_constant(expr) 0
903#endif
904
905#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
762 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 906 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
907#else
908 #define ecb_expect(expr,value) (expr)
909#endif
910
911#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
763 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 912 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
764#else 913#else
765 #define ecb_attribute(attrlist)
766 #define ecb_is_constant(expr) 0
767 #define ecb_expect(expr,value) (expr)
768 #define ecb_prefetch(addr,rw,locality) 914 #define ecb_prefetch(addr,rw,locality)
769#endif 915#endif
770 916
771/* no emulation for ecb_decltype */ 917/* no emulation for ecb_decltype */
772#if ECB_GCC_VERSION(4,5) 918#if ECB_CPP11
919 // older implementations might have problems with decltype(x)::type, work around it
920 template<class T> struct ecb_decltype_t { typedef T type; };
773 #define ecb_decltype(x) __decltype(x) 921 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
774#elif ECB_GCC_VERSION(3,0) 922#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
775 #define ecb_decltype(x) __typeof(x) 923 #define ecb_decltype(x) __typeof__ (x)
776#endif 924#endif
777 925
926#if _MSC_VER >= 1300
927 #define ecb_deprecated __declspec (deprecated)
928#else
929 #define ecb_deprecated ecb_attribute ((__deprecated__))
930#endif
931
932#if _MSC_VER >= 1500
933 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
934#elif ECB_GCC_VERSION(4,5)
935 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
936#else
937 #define ecb_deprecated_message(msg) ecb_deprecated
938#endif
939
940#if _MSC_VER >= 1400
941 #define ecb_noinline __declspec (noinline)
942#else
778#define ecb_noinline ecb_attribute ((__noinline__)) 943 #define ecb_noinline ecb_attribute ((__noinline__))
944#endif
945
779#define ecb_unused ecb_attribute ((__unused__)) 946#define ecb_unused ecb_attribute ((__unused__))
780#define ecb_const ecb_attribute ((__const__)) 947#define ecb_const ecb_attribute ((__const__))
781#define ecb_pure ecb_attribute ((__pure__)) 948#define ecb_pure ecb_attribute ((__pure__))
782 949
783#if ECB_C11 950#if ECB_C11 || __IBMC_NORETURN
951 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
784 #define ecb_noreturn _Noreturn 952 #define ecb_noreturn _Noreturn
953#elif ECB_CPP11
954 #define ecb_noreturn [[noreturn]]
955#elif _MSC_VER >= 1200
956 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
957 #define ecb_noreturn __declspec (noreturn)
785#else 958#else
786 #define ecb_noreturn ecb_attribute ((__noreturn__)) 959 #define ecb_noreturn ecb_attribute ((__noreturn__))
787#endif 960#endif
788 961
789#if ECB_GCC_VERSION(4,3) 962#if ECB_GCC_VERSION(4,3)
… …
804/* for compatibility to the rest of the world */ 977/* for compatibility to the rest of the world */
805#define ecb_likely(expr) ecb_expect_true (expr) 978#define ecb_likely(expr) ecb_expect_true (expr)
806#define ecb_unlikely(expr) ecb_expect_false (expr) 979#define ecb_unlikely(expr) ecb_expect_false (expr)
807 980
808/* count trailing zero bits and count # of one bits */ 981/* count trailing zero bits and count # of one bits */
809#if ECB_GCC_VERSION(3,4) 982#if ECB_GCC_VERSION(3,4) \
983 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
984 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
985 && ECB_CLANG_BUILTIN(__builtin_popcount))
810 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 986 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
811 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 987 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
812 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 988 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
813 #define ecb_ctz32(x) __builtin_ctz (x) 989 #define ecb_ctz32(x) __builtin_ctz (x)
814 #define ecb_ctz64(x) __builtin_ctzll (x) 990 #define ecb_ctz64(x) __builtin_ctzll (x)
815 #define ecb_popcount32(x) __builtin_popcount (x) 991 #define ecb_popcount32(x) __builtin_popcount (x)
816 /* no popcountll */ 992 /* no popcountll */
817#else 993#else
818 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 994 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
819 ecb_function_ int 995 ecb_function_ ecb_const int
820 ecb_ctz32 (uint32_t x) 996 ecb_ctz32 (uint32_t x)
821 { 997 {
998#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
999 unsigned long r;
1000 _BitScanForward (&r, x);
1001 return (int)r;
1002#else
822 int r = 0; 1003 int r = 0;
823 1004
824 x &= ~x + 1; /* this isolates the lowest bit */ 1005 x &= ~x + 1; /* this isolates the lowest bit */
825 1006
826#if ECB_branchless_on_i386 1007#if ECB_branchless_on_i386
… …
836 if (x & 0xff00ff00) r += 8; 1017 if (x & 0xff00ff00) r += 8;
837 if (x & 0xffff0000) r += 16; 1018 if (x & 0xffff0000) r += 16;
838#endif 1019#endif
839 1020
840 return r; 1021 return r;
1022#endif
841 } 1023 }
842 1024
843 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1025 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
844 ecb_function_ int 1026 ecb_function_ ecb_const int
845 ecb_ctz64 (uint64_t x) 1027 ecb_ctz64 (uint64_t x)
846 { 1028 {
1029#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1030 unsigned long r;
1031 _BitScanForward64 (&r, x);
1032 return (int)r;
1033#else
847 int shift = x & 0xffffffffU ? 0 : 32; 1034 int shift = x & 0xffffffff ? 0 : 32;
848 return ecb_ctz32 (x >> shift) + shift; 1035 return ecb_ctz32 (x >> shift) + shift;
1036#endif
849 } 1037 }
850 1038
851 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1039 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
852 ecb_function_ int 1040 ecb_function_ ecb_const int
853 ecb_popcount32 (uint32_t x) 1041 ecb_popcount32 (uint32_t x)
854 { 1042 {
855 x -= (x >> 1) & 0x55555555; 1043 x -= (x >> 1) & 0x55555555;
856 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1044 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
857 x = ((x >> 4) + x) & 0x0f0f0f0f; 1045 x = ((x >> 4) + x) & 0x0f0f0f0f;
858 x *= 0x01010101; 1046 x *= 0x01010101;
859 1047
860 return x >> 24; 1048 return x >> 24;
861 } 1049 }
862 1050
863 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1051 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
864 ecb_function_ int ecb_ld32 (uint32_t x) 1052 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
865 { 1053 {
1054#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1055 unsigned long r;
1056 _BitScanReverse (&r, x);
1057 return (int)r;
1058#else
866 int r = 0; 1059 int r = 0;
867 1060
868 if (x >> 16) { x >>= 16; r += 16; } 1061 if (x >> 16) { x >>= 16; r += 16; }
869 if (x >> 8) { x >>= 8; r += 8; } 1062 if (x >> 8) { x >>= 8; r += 8; }
870 if (x >> 4) { x >>= 4; r += 4; } 1063 if (x >> 4) { x >>= 4; r += 4; }
871 if (x >> 2) { x >>= 2; r += 2; } 1064 if (x >> 2) { x >>= 2; r += 2; }
872 if (x >> 1) { r += 1; } 1065 if (x >> 1) { r += 1; }
873 1066
874 return r; 1067 return r;
1068#endif
875 } 1069 }
876 1070
877 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1071 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
878 ecb_function_ int ecb_ld64 (uint64_t x) 1072 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
879 { 1073 {
1074#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1075 unsigned long r;
1076 _BitScanReverse64 (&r, x);
1077 return (int)r;
1078#else
880 int r = 0; 1079 int r = 0;
881 1080
882 if (x >> 32) { x >>= 32; r += 32; } 1081 if (x >> 32) { x >>= 32; r += 32; }
883 1082
884 return r + ecb_ld32 (x); 1083 return r + ecb_ld32 (x);
1084#endif
885 } 1085 }
886#endif 1086#endif
887 1087
888ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1088ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
889ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1089ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
890ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1090ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
891ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1091ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
892 1092
893ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1093ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
894ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1094ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
895{ 1095{
896 return ( (x * 0x0802U & 0x22110U) 1096 return ( (x * 0x0802U & 0x22110U)
897 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1097 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
898} 1098}
899 1099
900ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1100ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
901ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1101ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
902{ 1102{
903 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1103 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
904 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1104 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
905 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1105 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
906 x = ( x >> 8 ) | ( x << 8); 1106 x = ( x >> 8 ) | ( x << 8);
907 1107
908 return x; 1108 return x;
909} 1109}
910 1110
911ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1111ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
912ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1112ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
913{ 1113{
914 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1114 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
915 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1115 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
916 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1116 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
917 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1117 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
920 return x; 1120 return x;
921} 1121}
922 1122
923/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1123/* popcount64 is only available on 64 bit cpus as gcc builtin */
924/* so for this version we are lazy */ 1124/* so for this version we are lazy */
925ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1125ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
926ecb_function_ int 1126ecb_function_ ecb_const int
927ecb_popcount64 (uint64_t x) 1127ecb_popcount64 (uint64_t x)
928{ 1128{
929 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1129 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
930} 1130}
931 1131
932ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1132ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
933ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1133ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
934ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1134ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
935ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1135ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
936ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1136ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
937ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1137ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
938ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1138ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
939ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1139ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
940 1140
941ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1141ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
942ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1142ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
943ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1143ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
944ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1144ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
945ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1145ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
946ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1146ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
947ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1147ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
948ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1148ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
949 1149
950#if ECB_GCC_VERSION(4,3) 1150#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1151 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1152 #define ecb_bswap16(x) __builtin_bswap16 (x)
1153 #else
951 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1154 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1155 #endif
952 #define ecb_bswap32(x) __builtin_bswap32 (x) 1156 #define ecb_bswap32(x) __builtin_bswap32 (x)
953 #define ecb_bswap64(x) __builtin_bswap64 (x) 1157 #define ecb_bswap64(x) __builtin_bswap64 (x)
1158#elif _MSC_VER
1159 #include <stdlib.h>
1160 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1161 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1162 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
954#else 1163#else
955 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1164 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
956 ecb_function_ uint16_t 1165 ecb_function_ ecb_const uint16_t
957 ecb_bswap16 (uint16_t x) 1166 ecb_bswap16 (uint16_t x)
958 { 1167 {
959 return ecb_rotl16 (x, 8); 1168 return ecb_rotl16 (x, 8);
960 } 1169 }
961 1170
962 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1171 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
963 ecb_function_ uint32_t 1172 ecb_function_ ecb_const uint32_t
964 ecb_bswap32 (uint32_t x) 1173 ecb_bswap32 (uint32_t x)
965 { 1174 {
966 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1175 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
967 } 1176 }
968 1177
969 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1178 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
970 ecb_function_ uint64_t 1179 ecb_function_ ecb_const uint64_t
971 ecb_bswap64 (uint64_t x) 1180 ecb_bswap64 (uint64_t x)
972 { 1181 {
973 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1182 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
974 } 1183 }
975#endif 1184#endif
976 1185
977#if ECB_GCC_VERSION(4,5) 1186#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
978 #define ecb_unreachable() __builtin_unreachable () 1187 #define ecb_unreachable() __builtin_unreachable ()
979#else 1188#else
980 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1189 /* this seems to work fine, but gcc always emits a warning for it :/ */
981 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1190 ecb_inline ecb_noreturn void ecb_unreachable (void);
982 ecb_inline void ecb_unreachable (void) { } 1191 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
983#endif 1192#endif
984 1193
985/* try to tell the compiler that some condition is definitely true */ 1194/* try to tell the compiler that some condition is definitely true */
986#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1195#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
987 1196
988ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1197ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
989ecb_inline unsigned char 1198ecb_inline ecb_const uint32_t
990ecb_byteorder_helper (void) 1199ecb_byteorder_helper (void)
991{ 1200{
992 /* the union code still generates code under pressure in gcc, */ 1201 /* the union code still generates code under pressure in gcc, */
993 /* but less than using pointers, and always seems to */ 1202 /* but less than using pointers, and always seems to */
994 /* successfully return a constant. */ 1203 /* successfully return a constant. */
995 /* the reason why we have this horrible preprocessor mess */ 1204 /* the reason why we have this horrible preprocessor mess */
996 /* is to avoid it in all cases, at least on common architectures */ 1205 /* is to avoid it in all cases, at least on common architectures */
997 /* or when using a recent enough gcc version (>= 4.6) */ 1206 /* or when using a recent enough gcc version (>= 4.6) */
998#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
999 return 0x44;
1000#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1207#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1208 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1209 #define ECB_LITTLE_ENDIAN 1
1001 return 0x44; 1210 return 0x44332211;
1002#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1211#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1212 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1213 #define ECB_BIG_ENDIAN 1
1003 return 0x11; 1214 return 0x11223344;
1004#else 1215#else
1005 union 1216 union
1006 { 1217 {
1218 uint8_t c[4];
1007 uint32_t i; 1219 uint32_t u;
1008 uint8_t c;
1009 } u = { 0x11223344 }; 1220 } u = { 0x11, 0x22, 0x33, 0x44 };
1010 return u.c; 1221 return u.u;
1011#endif 1222#endif
1012} 1223}
1013 1224
1014ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1225ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1015ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1226ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1016ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1227ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1017ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1228ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1018 1229
1019#if ECB_GCC_VERSION(3,0) || ECB_C99 1230#if ECB_GCC_VERSION(3,0) || ECB_C99
1020 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1231 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1021#else 1232#else
1022 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1233 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1023#endif 1234#endif
1024 1235
1025#if __cplusplus 1236#if ECB_CPP
1026 template<typename T> 1237 template<typename T>
1027 static inline T ecb_div_rd (T val, T div) 1238 static inline T ecb_div_rd (T val, T div)
1028 { 1239 {
1029 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1240 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1030 } 1241 }
… …
1047 } 1258 }
1048#else 1259#else
1049 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1260 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1050#endif 1261#endif
1051 1262
1263ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1264ecb_function_ ecb_const uint32_t
1265ecb_binary16_to_binary32 (uint32_t x)
1266{
1267 unsigned int s = (x & 0x8000) << (31 - 15);
1268 int e = (x >> 10) & 0x001f;
1269 unsigned int m = x & 0x03ff;
1270
1271 if (ecb_expect_false (e == 31))
1272 /* infinity or NaN */
1273 e = 255 - (127 - 15);
1274 else if (ecb_expect_false (!e))
1275 {
1276 if (ecb_expect_true (!m))
1277 /* zero, handled by code below by forcing e to 0 */
1278 e = 0 - (127 - 15);
1279 else
1280 {
1281 /* subnormal, renormalise */
1282 unsigned int s = 10 - ecb_ld32 (m);
1283
1284 m = (m << s) & 0x3ff; /* mask implicit bit */
1285 e -= s - 1;
1286 }
1287 }
1288
1289 /* e and m now are normalised, or zero, (or inf or nan) */
1290 e += 127 - 15;
1291
1292 return s | (e << 23) | (m << (23 - 10));
1293}
1294
1295ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1296ecb_function_ ecb_const uint16_t
1297ecb_binary32_to_binary16 (uint32_t x)
1298{
1299 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1300 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1301 unsigned int m = x & 0x007fffff;
1302
1303 x &= 0x7fffffff;
1304
1305 /* if it's within range of binary16 normals, use fast path */
1306 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1307 {
1308 /* mantissa round-to-even */
1309 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1310
1311 /* handle overflow */
1312 if (ecb_expect_false (m >= 0x00800000))
1313 {
1314 m >>= 1;
1315 e += 1;
1316 }
1317
1318 return s | (e << 10) | (m >> (23 - 10));
1319 }
1320
1321 /* handle large numbers and infinity */
1322 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1323 return s | 0x7c00;
1324
1325 /* handle zero, subnormals and small numbers */
1326 if (ecb_expect_true (x < 0x38800000))
1327 {
1328 /* zero */
1329 if (ecb_expect_true (!x))
1330 return s;
1331
1332 /* handle subnormals */
1333
1334 /* too small, will be zero */
1335 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1336 return s;
1337
1338 m |= 0x00800000; /* make implicit bit explicit */
1339
1340 /* very tricky - we need to round to the nearest e (+10) bit value */
1341 {
1342 unsigned int bits = 14 - e;
1343 unsigned int half = (1 << (bits - 1)) - 1;
1344 unsigned int even = (m >> bits) & 1;
1345
1346 /* if this overflows, we will end up with a normalised number */
1347 m = (m + half + even) >> bits;
1348 }
1349
1350 return s | m;
1351 }
1352
1353 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1354 m >>= 13;
1355
1356 return s | 0x7c00 | m | !m;
1357}
1358
1052/*******************************************************************************/ 1359/*******************************************************************************/
1053/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1360/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1054 1361
1055/* basically, everything uses "ieee pure-endian" floating point numbers */ 1362/* basically, everything uses "ieee pure-endian" floating point numbers */
1056/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1363/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1057#if 0 \ 1364#if 0 \
1058 || __i386 || __i386__ \ 1365 || __i386 || __i386__ \
1059 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1366 || ECB_GCC_AMD64 \
1060 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1367 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1061 || defined __arm__ && defined __ARM_EABI__ \
1062 || defined __s390__ || defined __s390x__ \ 1368 || defined __s390__ || defined __s390x__ \
1063 || defined __mips__ \ 1369 || defined __mips__ \
1064 || defined __alpha__ \ 1370 || defined __alpha__ \
1065 || defined __hppa__ \ 1371 || defined __hppa__ \
1066 || defined __ia64__ \ 1372 || defined __ia64__ \
1067 || defined __m68k__ \ 1373 || defined __m68k__ \
1068 || defined __m88k__ \ 1374 || defined __m88k__ \
1069 || defined __sh__ \ 1375 || defined __sh__ \
1070 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1376 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1377 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1378 || defined __aarch64__
1071 #define ECB_STDFP 1 1379 #define ECB_STDFP 1
1072 #include <string.h> /* for memcpy */ 1380 #include <string.h> /* for memcpy */
1073#else 1381#else
1074 #define ECB_STDFP 0 1382 #define ECB_STDFP 0
1075#endif 1383#endif
… …
1089 #define ECB_NAN NAN 1397 #define ECB_NAN NAN
1090 #else 1398 #else
1091 #define ECB_NAN ECB_INFINITY 1399 #define ECB_NAN ECB_INFINITY
1092 #endif 1400 #endif
1093 1401
1094 /* converts an ieee half/binary16 to a float */ 1402 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1095 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1403 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1096 ecb_function_ float 1404 #define ecb_frexpf(x,e) frexpf ((x), (e))
1097 ecb_binary16_to_float (uint16_t x) 1405 #else
1098 { 1406 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1099 int e = (x >> 10) & 0x1f; 1407 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1100 int m = x & 0x3ff; 1408 #endif
1101 float r;
1102
1103 if (!e ) r = ldexpf (m , -24);
1104 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1105 else if (m ) r = ECB_NAN;
1106 else r = ECB_INFINITY;
1107
1108 return x & 0x8000 ? -r : r;
1109 }
1110 1409
1111 /* convert a float to ieee single/binary32 */ 1410 /* convert a float to ieee single/binary32 */
1112 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1411 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1113 ecb_function_ uint32_t 1412 ecb_function_ ecb_const uint32_t
1114 ecb_float_to_binary32 (float x) 1413 ecb_float_to_binary32 (float x)
1115 { 1414 {
1116 uint32_t r; 1415 uint32_t r;
1117 1416
1118 #if ECB_STDFP 1417 #if ECB_STDFP
… …
1125 if (x == 0e0f ) return 0x00000000U; 1424 if (x == 0e0f ) return 0x00000000U;
1126 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1425 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1127 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1426 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1128 if (x != x ) return 0x7fbfffffU; 1427 if (x != x ) return 0x7fbfffffU;
1129 1428
1130 m = frexpf (x, &e) * 0x1000000U; 1429 m = ecb_frexpf (x, &e) * 0x1000000U;
1131 1430
1132 r = m & 0x80000000U; 1431 r = m & 0x80000000U;
1133 1432
1134 if (r) 1433 if (r)
1135 m = -m; 1434 m = -m;
… …
1147 1446
1148 return r; 1447 return r;
1149 } 1448 }
1150 1449
1151 /* converts an ieee single/binary32 to a float */ 1450 /* converts an ieee single/binary32 to a float */
1152 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1451 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1153 ecb_function_ float 1452 ecb_function_ ecb_const float
1154 ecb_binary32_to_float (uint32_t x) 1453 ecb_binary32_to_float (uint32_t x)
1155 { 1454 {
1156 float r; 1455 float r;
1157 1456
1158 #if ECB_STDFP 1457 #if ECB_STDFP
… …
1168 x |= 0x800000U; 1467 x |= 0x800000U;
1169 else 1468 else
1170 e = 1; 1469 e = 1;
1171 1470
1172 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1471 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1173 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1472 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1174 1473
1175 r = neg ? -r : r; 1474 r = neg ? -r : r;
1176 #endif 1475 #endif
1177 1476
1178 return r; 1477 return r;
1179 } 1478 }
1180 1479
1181 /* convert a double to ieee double/binary64 */ 1480 /* convert a double to ieee double/binary64 */
1182 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1481 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1183 ecb_function_ uint64_t 1482 ecb_function_ ecb_const uint64_t
1184 ecb_double_to_binary64 (double x) 1483 ecb_double_to_binary64 (double x)
1185 { 1484 {
1186 uint64_t r; 1485 uint64_t r;
1187 1486
1188 #if ECB_STDFP 1487 #if ECB_STDFP
… …
1217 1516
1218 return r; 1517 return r;
1219 } 1518 }
1220 1519
1221 /* converts an ieee double/binary64 to a double */ 1520 /* converts an ieee double/binary64 to a double */
1222 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1521 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1223 ecb_function_ double 1522 ecb_function_ ecb_const double
1224 ecb_binary64_to_double (uint64_t x) 1523 ecb_binary64_to_double (uint64_t x)
1225 { 1524 {
1226 double r; 1525 double r;
1227 1526
1228 #if ECB_STDFP 1527 #if ECB_STDFP
… …
1246 #endif 1545 #endif
1247 1546
1248 return r; 1547 return r;
1249 } 1548 }
1250 1549
1550 /* convert a float to ieee half/binary16 */
1551 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1552 ecb_function_ ecb_const uint16_t
1553 ecb_float_to_binary16 (float x)
1554 {
1555 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1556 }
1557
1558 /* convert an ieee half/binary16 to float */
1559 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1560 ecb_function_ ecb_const float
1561 ecb_binary16_to_float (uint16_t x)
1562 {
1563 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1564 }
1565
1251#endif 1566#endif
1252 1567
1253#endif 1568#endif
1254 1569
1255/* ECB.H END */ 1570/* ECB.H END */
1256 1571
1257#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1572#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1258/* if your architecture doesn't need memory fences, e.g. because it is 1573/* if your architecture doesn't need memory fences, e.g. because it is
1259 * single-cpu/core, or if you use libev in a project that doesn't use libev 1574 * single-cpu/core, or if you use libev in a project that doesn't use libev
1260 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1575 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1261 * libev, in which cases the memory fences become nops. 1576 * libev, in which cases the memory fences become nops.
1262 * alternatively, you can remove this #error and link against libpthread, 1577 * alternatively, you can remove this #error and link against libpthread,
1263 * which will then provide the memory fences. 1578 * which will then provide the memory fences.
1264 */ 1579 */
1265# error "memory fences not defined for your architecture, please report" 1580# error "memory fences not defined for your architecture, please report"
… …
1269# define ECB_MEMORY_FENCE do { } while (0) 1584# define ECB_MEMORY_FENCE do { } while (0)
1270# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1585# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1271# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1586# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1272#endif 1587#endif
1273 1588
1274#define expect_false(cond) ecb_expect_false (cond)
1275#define expect_true(cond) ecb_expect_true (cond)
1276#define noinline ecb_noinline
1277
1278#define inline_size ecb_inline 1589#define inline_size ecb_inline
1279 1590
1280#if EV_FEATURE_CODE 1591#if EV_FEATURE_CODE
1281# define inline_speed ecb_inline 1592# define inline_speed ecb_inline
1282#else 1593#else
1283# define inline_speed static noinline 1594# define inline_speed ecb_noinline static
1284#endif 1595#endif
1596
1597/*****************************************************************************/
1598/* raw syscall wrappers */
1599
1600#if EV_NEED_SYSCALL
1601
1602#include <sys/syscall.h>
1603
1604/*
1605 * define some syscall wrappers for common architectures
1606 * this is mostly for nice looks during debugging, not performance.
1607 * our syscalls return < 0, not == -1, on error. which is good
1608 * enough for linux aio.
1609 * TODO: arm is also common nowadays, maybe even mips and x86
1610 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1611 */
1612#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1613 /* the costly errno access probably kills this for size optimisation */
1614
1615 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1616 ({ \
1617 long res; \
1618 register unsigned long r6 __asm__ ("r9" ); \
1619 register unsigned long r5 __asm__ ("r8" ); \
1620 register unsigned long r4 __asm__ ("r10"); \
1621 register unsigned long r3 __asm__ ("rdx"); \
1622 register unsigned long r2 __asm__ ("rsi"); \
1623 register unsigned long r1 __asm__ ("rdi"); \
1624 if (narg >= 6) r6 = (unsigned long)(arg6); \
1625 if (narg >= 5) r5 = (unsigned long)(arg5); \
1626 if (narg >= 4) r4 = (unsigned long)(arg4); \
1627 if (narg >= 3) r3 = (unsigned long)(arg3); \
1628 if (narg >= 2) r2 = (unsigned long)(arg2); \
1629 if (narg >= 1) r1 = (unsigned long)(arg1); \
1630 __asm__ __volatile__ ( \
1631 "syscall\n\t" \
1632 : "=a" (res) \
1633 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1634 : "cc", "r11", "cx", "memory"); \
1635 errno = -res; \
1636 res; \
1637 })
1638
1639#endif
1640
1641#ifdef ev_syscall
1642 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1643 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1644 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1645 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1646 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1647 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1648 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1649#else
1650 #define ev_syscall0(nr) syscall (nr)
1651 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1652 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1653 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1654 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1655 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1656 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1657#endif
1658
1659#endif
1660
1661/*****************************************************************************/
1285 1662
1286#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1663#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1287 1664
1288#if EV_MINPRI == EV_MAXPRI 1665#if EV_MINPRI == EV_MAXPRI
1289# define ABSPRI(w) (((W)w), 0) 1666# define ABSPRI(w) (((W)w), 0)
1290#else 1667#else
1291# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1668# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1292#endif 1669#endif
1293 1670
1294#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1671#define EMPTY /* required for microsofts broken pseudo-c compiler */
1295#define EMPTY2(a,b) /* used to suppress some warnings */
1296 1672
1297typedef ev_watcher *W; 1673typedef ev_watcher *W;
1298typedef ev_watcher_list *WL; 1674typedef ev_watcher_list *WL;
1299typedef ev_watcher_time *WT; 1675typedef ev_watcher_time *WT;
1300 1676
… …
1325# include "ev_win32.c" 1701# include "ev_win32.c"
1326#endif 1702#endif
1327 1703
1328/*****************************************************************************/ 1704/*****************************************************************************/
1329 1705
1706#if EV_USE_LINUXAIO
1707# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1708#endif
1709
1330/* define a suitable floor function (only used by periodics atm) */ 1710/* define a suitable floor function (only used by periodics atm) */
1331 1711
1332#if EV_USE_FLOOR 1712#if EV_USE_FLOOR
1333# include <math.h> 1713# include <math.h>
1334# define ev_floor(v) floor (v) 1714# define ev_floor(v) floor (v)
1335#else 1715#else
1336 1716
1337#include <float.h> 1717#include <float.h>
1338 1718
1339/* a floor() replacement function, should be independent of ev_tstamp type */ 1719/* a floor() replacement function, should be independent of ev_tstamp type */
1720ecb_noinline
1340static ev_tstamp noinline 1721static ev_tstamp
1341ev_floor (ev_tstamp v) 1722ev_floor (ev_tstamp v)
1342{ 1723{
1343 /* the choice of shift factor is not terribly important */ 1724 /* the choice of shift factor is not terribly important */
1344#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1725#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1345 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1726 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1346#else 1727#else
1347 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1728 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1348#endif 1729#endif
1349 1730
1350 /* argument too large for an unsigned long? */ 1731 /* argument too large for an unsigned long? */
1351 if (expect_false (v >= shift)) 1732 if (ecb_expect_false (v >= shift))
1352 { 1733 {
1353 ev_tstamp f; 1734 ev_tstamp f;
1354 1735
1355 if (v == v - 1.) 1736 if (v == v - 1.)
1356 return v; /* very large number */ 1737 return v; /* very large number */
… …
1358 f = shift * ev_floor (v * (1. / shift)); 1739 f = shift * ev_floor (v * (1. / shift));
1359 return f + ev_floor (v - f); 1740 return f + ev_floor (v - f);
1360 } 1741 }
1361 1742
1362 /* special treatment for negative args? */ 1743 /* special treatment for negative args? */
1363 if (expect_false (v < 0.)) 1744 if (ecb_expect_false (v < 0.))
1364 { 1745 {
1365 ev_tstamp f = -ev_floor (-v); 1746 ev_tstamp f = -ev_floor (-v);
1366 1747
1367 return f - (f == v ? 0 : 1); 1748 return f - (f == v ? 0 : 1);
1368 } 1749 }
… …
1377 1758
1378#ifdef __linux 1759#ifdef __linux
1379# include <sys/utsname.h> 1760# include <sys/utsname.h>
1380#endif 1761#endif
1381 1762
1382static unsigned int noinline ecb_cold 1763ecb_noinline ecb_cold
1764static unsigned int
1383ev_linux_version (void) 1765ev_linux_version (void)
1384{ 1766{
1385#ifdef __linux 1767#ifdef __linux
1386 unsigned int v = 0; 1768 unsigned int v = 0;
1387 struct utsname buf; 1769 struct utsname buf;
… …
1416} 1798}
1417 1799
1418/*****************************************************************************/ 1800/*****************************************************************************/
1419 1801
1420#if EV_AVOID_STDIO 1802#if EV_AVOID_STDIO
1421static void noinline ecb_cold 1803ecb_noinline ecb_cold
1804static void
1422ev_printerr (const char *msg) 1805ev_printerr (const char *msg)
1423{ 1806{
1424 write (STDERR_FILENO, msg, strlen (msg)); 1807 write (STDERR_FILENO, msg, strlen (msg));
1425} 1808}
1426#endif 1809#endif
1427 1810
1428static void (*syserr_cb)(const char *msg) EV_THROW; 1811static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1429 1812
1430void ecb_cold 1813ecb_cold
1814void
1431ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1815ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1432{ 1816{
1433 syserr_cb = cb; 1817 syserr_cb = cb;
1434} 1818}
1435 1819
1436static void noinline ecb_cold 1820ecb_noinline ecb_cold
1821static void
1437ev_syserr (const char *msg) 1822ev_syserr (const char *msg)
1438{ 1823{
1439 if (!msg) 1824 if (!msg)
1440 msg = "(libev) system error"; 1825 msg = "(libev) system error";
1441 1826
… …
1454 abort (); 1839 abort ();
1455 } 1840 }
1456} 1841}
1457 1842
1458static void * 1843static void *
1459ev_realloc_emul (void *ptr, long size) EV_THROW 1844ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1460{ 1845{
1461 /* some systems, notably openbsd and darwin, fail to properly 1846 /* some systems, notably openbsd and darwin, fail to properly
1462 * implement realloc (x, 0) (as required by both ansi c-89 and 1847 * implement realloc (x, 0) (as required by both ansi c-89 and
1463 * the single unix specification, so work around them here. 1848 * the single unix specification, so work around them here.
1464 * recently, also (at least) fedora and debian started breaking it, 1849 * recently, also (at least) fedora and debian started breaking it,
… …
1470 1855
1471 free (ptr); 1856 free (ptr);
1472 return 0; 1857 return 0;
1473} 1858}
1474 1859
1475static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1860static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1476 1861
1477void ecb_cold 1862ecb_cold
1863void
1478ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1864ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1479{ 1865{
1480 alloc = cb; 1866 alloc = cb;
1481} 1867}
1482 1868
1483inline_speed void * 1869inline_speed void *
… …
1510typedef struct 1896typedef struct
1511{ 1897{
1512 WL head; 1898 WL head;
1513 unsigned char events; /* the events watched for */ 1899 unsigned char events; /* the events watched for */
1514 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1900 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1515 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1901 unsigned char emask; /* some backends store the actual kernel mask in here */
1516 unsigned char unused; 1902 unsigned char eflags; /* flags field for use by backends */
1517#if EV_USE_EPOLL 1903#if EV_USE_EPOLL
1518 unsigned int egen; /* generation counter to counter epoll bugs */ 1904 unsigned int egen; /* generation counter to counter epoll bugs */
1519#endif 1905#endif
1520#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1906#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1521 SOCKET handle; 1907 SOCKET handle;
… …
1585 static int ev_default_loop_ptr; 1971 static int ev_default_loop_ptr;
1586 1972
1587#endif 1973#endif
1588 1974
1589#if EV_FEATURE_API 1975#if EV_FEATURE_API
1590# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1976# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1591# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1977# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1592# define EV_INVOKE_PENDING invoke_cb (EV_A) 1978# define EV_INVOKE_PENDING invoke_cb (EV_A)
1593#else 1979#else
1594# define EV_RELEASE_CB (void)0 1980# define EV_RELEASE_CB (void)0
1595# define EV_ACQUIRE_CB (void)0 1981# define EV_ACQUIRE_CB (void)0
1596# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1982# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1600 1986
1601/*****************************************************************************/ 1987/*****************************************************************************/
1602 1988
1603#ifndef EV_HAVE_EV_TIME 1989#ifndef EV_HAVE_EV_TIME
1604ev_tstamp 1990ev_tstamp
1605ev_time (void) EV_THROW 1991ev_time (void) EV_NOEXCEPT
1606{ 1992{
1607#if EV_USE_REALTIME 1993#if EV_USE_REALTIME
1608 if (expect_true (have_realtime)) 1994 if (ecb_expect_true (have_realtime))
1609 { 1995 {
1610 struct timespec ts; 1996 struct timespec ts;
1611 clock_gettime (CLOCK_REALTIME, &ts); 1997 clock_gettime (CLOCK_REALTIME, &ts);
1612 return ts.tv_sec + ts.tv_nsec * 1e-9; 1998 return ts.tv_sec + ts.tv_nsec * 1e-9;
1613 } 1999 }
… …
1621 2007
1622inline_size ev_tstamp 2008inline_size ev_tstamp
1623get_clock (void) 2009get_clock (void)
1624{ 2010{
1625#if EV_USE_MONOTONIC 2011#if EV_USE_MONOTONIC
1626 if (expect_true (have_monotonic)) 2012 if (ecb_expect_true (have_monotonic))
1627 { 2013 {
1628 struct timespec ts; 2014 struct timespec ts;
1629 clock_gettime (CLOCK_MONOTONIC, &ts); 2015 clock_gettime (CLOCK_MONOTONIC, &ts);
1630 return ts.tv_sec + ts.tv_nsec * 1e-9; 2016 return ts.tv_sec + ts.tv_nsec * 1e-9;
1631 } 2017 }
… …
1634 return ev_time (); 2020 return ev_time ();
1635} 2021}
1636 2022
1637#if EV_MULTIPLICITY 2023#if EV_MULTIPLICITY
1638ev_tstamp 2024ev_tstamp
1639ev_now (EV_P) EV_THROW 2025ev_now (EV_P) EV_NOEXCEPT
1640{ 2026{
1641 return ev_rt_now; 2027 return ev_rt_now;
1642} 2028}
1643#endif 2029#endif
1644 2030
1645void 2031void
1646ev_sleep (ev_tstamp delay) EV_THROW 2032ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1647{ 2033{
1648 if (delay > 0.) 2034 if (delay > 0.)
1649 { 2035 {
1650#if EV_USE_NANOSLEEP 2036#if EV_USE_NANOSLEEP
1651 struct timespec ts; 2037 struct timespec ts;
1652 2038
1653 EV_TS_SET (ts, delay); 2039 EV_TS_SET (ts, delay);
1654 nanosleep (&ts, 0); 2040 nanosleep (&ts, 0);
1655#elif defined _WIN32 2041#elif defined _WIN32
2042 /* maybe this should round up, as ms is very low resolution */
2043 /* compared to select (µs) or nanosleep (ns) */
1656 Sleep ((unsigned long)(delay * 1e3)); 2044 Sleep ((unsigned long)(delay * 1e3));
1657#else 2045#else
1658 struct timeval tv; 2046 struct timeval tv;
1659 2047
1660 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2048 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1691 } 2079 }
1692 2080
1693 return ncur; 2081 return ncur;
1694} 2082}
1695 2083
1696static void * noinline ecb_cold 2084ecb_noinline ecb_cold
2085static void *
1697array_realloc (int elem, void *base, int *cur, int cnt) 2086array_realloc (int elem, void *base, int *cur, int cnt)
1698{ 2087{
1699 *cur = array_nextsize (elem, *cur, cnt); 2088 *cur = array_nextsize (elem, *cur, cnt);
1700 return ev_realloc (base, elem * *cur); 2089 return ev_realloc (base, elem * *cur);
1701} 2090}
1702 2091
2092#define array_needsize_noinit(base,offset,count)
2093
1703#define array_init_zero(base,count) \ 2094#define array_needsize_zerofill(base,offset,count) \
1704 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2095 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1705 2096
1706#define array_needsize(type,base,cur,cnt,init) \ 2097#define array_needsize(type,base,cur,cnt,init) \
1707 if (expect_false ((cnt) > (cur))) \ 2098 if (ecb_expect_false ((cnt) > (cur))) \
1708 { \ 2099 { \
1709 int ecb_unused ocur_ = (cur); \ 2100 ecb_unused int ocur_ = (cur); \
1710 (base) = (type *)array_realloc \ 2101 (base) = (type *)array_realloc \
1711 (sizeof (type), (base), &(cur), (cnt)); \ 2102 (sizeof (type), (base), &(cur), (cnt)); \
1712 init ((base) + (ocur_), (cur) - ocur_); \ 2103 init ((base), ocur_, ((cur) - ocur_)); \
1713 } 2104 }
1714 2105
1715#if 0 2106#if 0
1716#define array_slim(type,stem) \ 2107#define array_slim(type,stem) \
1717 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2108 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1726 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2117 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1727 2118
1728/*****************************************************************************/ 2119/*****************************************************************************/
1729 2120
1730/* dummy callback for pending events */ 2121/* dummy callback for pending events */
1731static void noinline 2122ecb_noinline
2123static void
1732pendingcb (EV_P_ ev_prepare *w, int revents) 2124pendingcb (EV_P_ ev_prepare *w, int revents)
1733{ 2125{
1734} 2126}
1735 2127
1736void noinline 2128ecb_noinline
2129void
1737ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2130ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1738{ 2131{
1739 W w_ = (W)w; 2132 W w_ = (W)w;
1740 int pri = ABSPRI (w_); 2133 int pri = ABSPRI (w_);
1741 2134
1742 if (expect_false (w_->pending)) 2135 if (ecb_expect_false (w_->pending))
1743 pendings [pri][w_->pending - 1].events |= revents; 2136 pendings [pri][w_->pending - 1].events |= revents;
1744 else 2137 else
1745 { 2138 {
1746 w_->pending = ++pendingcnt [pri]; 2139 w_->pending = ++pendingcnt [pri];
1747 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2140 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1748 pendings [pri][w_->pending - 1].w = w_; 2141 pendings [pri][w_->pending - 1].w = w_;
1749 pendings [pri][w_->pending - 1].events = revents; 2142 pendings [pri][w_->pending - 1].events = revents;
1750 } 2143 }
1751 2144
1752 pendingpri = NUMPRI - 1; 2145 pendingpri = NUMPRI - 1;
1753} 2146}
1754 2147
1755inline_speed void 2148inline_speed void
1756feed_reverse (EV_P_ W w) 2149feed_reverse (EV_P_ W w)
1757{ 2150{
1758 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2151 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1759 rfeeds [rfeedcnt++] = w; 2152 rfeeds [rfeedcnt++] = w;
1760} 2153}
1761 2154
1762inline_size void 2155inline_size void
1763feed_reverse_done (EV_P_ int revents) 2156feed_reverse_done (EV_P_ int revents)
… …
1798inline_speed void 2191inline_speed void
1799fd_event (EV_P_ int fd, int revents) 2192fd_event (EV_P_ int fd, int revents)
1800{ 2193{
1801 ANFD *anfd = anfds + fd; 2194 ANFD *anfd = anfds + fd;
1802 2195
1803 if (expect_true (!anfd->reify)) 2196 if (ecb_expect_true (!anfd->reify))
1804 fd_event_nocheck (EV_A_ fd, revents); 2197 fd_event_nocheck (EV_A_ fd, revents);
1805} 2198}
1806 2199
1807void 2200void
1808ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2201ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1809{ 2202{
1810 if (fd >= 0 && fd < anfdmax) 2203 if (fd >= 0 && fd < anfdmax)
1811 fd_event_nocheck (EV_A_ fd, revents); 2204 fd_event_nocheck (EV_A_ fd, revents);
1812} 2205}
1813 2206
… …
1850 ev_io *w; 2243 ev_io *w;
1851 2244
1852 unsigned char o_events = anfd->events; 2245 unsigned char o_events = anfd->events;
1853 unsigned char o_reify = anfd->reify; 2246 unsigned char o_reify = anfd->reify;
1854 2247
1855 anfd->reify = 0; 2248 anfd->reify = 0;
1856 2249
1857 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2250 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1858 { 2251 {
1859 anfd->events = 0; 2252 anfd->events = 0;
1860 2253
1861 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2254 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1862 anfd->events |= (unsigned char)w->events; 2255 anfd->events |= (unsigned char)w->events;
… …
1871 2264
1872 fdchangecnt = 0; 2265 fdchangecnt = 0;
1873} 2266}
1874 2267
1875/* something about the given fd changed */ 2268/* something about the given fd changed */
1876inline_size void 2269inline_size
2270void
1877fd_change (EV_P_ int fd, int flags) 2271fd_change (EV_P_ int fd, int flags)
1878{ 2272{
1879 unsigned char reify = anfds [fd].reify; 2273 unsigned char reify = anfds [fd].reify;
1880 anfds [fd].reify |= flags; 2274 anfds [fd].reify |= flags;
1881 2275
1882 if (expect_true (!reify)) 2276 if (ecb_expect_true (!reify))
1883 { 2277 {
1884 ++fdchangecnt; 2278 ++fdchangecnt;
1885 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2279 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1886 fdchanges [fdchangecnt - 1] = fd; 2280 fdchanges [fdchangecnt - 1] = fd;
1887 } 2281 }
1888} 2282}
1889 2283
1890/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2284/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1891inline_speed void ecb_cold 2285inline_speed ecb_cold void
1892fd_kill (EV_P_ int fd) 2286fd_kill (EV_P_ int fd)
1893{ 2287{
1894 ev_io *w; 2288 ev_io *w;
1895 2289
1896 while ((w = (ev_io *)anfds [fd].head)) 2290 while ((w = (ev_io *)anfds [fd].head))
… …
1899 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2293 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1900 } 2294 }
1901} 2295}
1902 2296
1903/* check whether the given fd is actually valid, for error recovery */ 2297/* check whether the given fd is actually valid, for error recovery */
1904inline_size int ecb_cold 2298inline_size ecb_cold int
1905fd_valid (int fd) 2299fd_valid (int fd)
1906{ 2300{
1907#ifdef _WIN32 2301#ifdef _WIN32
1908 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2302 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1909#else 2303#else
1910 return fcntl (fd, F_GETFD) != -1; 2304 return fcntl (fd, F_GETFD) != -1;
1911#endif 2305#endif
1912} 2306}
1913 2307
1914/* called on EBADF to verify fds */ 2308/* called on EBADF to verify fds */
1915static void noinline ecb_cold 2309ecb_noinline ecb_cold
2310static void
1916fd_ebadf (EV_P) 2311fd_ebadf (EV_P)
1917{ 2312{
1918 int fd; 2313 int fd;
1919 2314
1920 for (fd = 0; fd < anfdmax; ++fd) 2315 for (fd = 0; fd < anfdmax; ++fd)
… …
1922 if (!fd_valid (fd) && errno == EBADF) 2317 if (!fd_valid (fd) && errno == EBADF)
1923 fd_kill (EV_A_ fd); 2318 fd_kill (EV_A_ fd);
1924} 2319}
1925 2320
1926/* called on ENOMEM in select/poll to kill some fds and retry */ 2321/* called on ENOMEM in select/poll to kill some fds and retry */
1927static void noinline ecb_cold 2322ecb_noinline ecb_cold
2323static void
1928fd_enomem (EV_P) 2324fd_enomem (EV_P)
1929{ 2325{
1930 int fd; 2326 int fd;
1931 2327
1932 for (fd = anfdmax; fd--; ) 2328 for (fd = anfdmax; fd--; )
… …
1936 break; 2332 break;
1937 } 2333 }
1938} 2334}
1939 2335
1940/* usually called after fork if backend needs to re-arm all fds from scratch */ 2336/* usually called after fork if backend needs to re-arm all fds from scratch */
1941static void noinline 2337ecb_noinline
2338static void
1942fd_rearm_all (EV_P) 2339fd_rearm_all (EV_P)
1943{ 2340{
1944 int fd; 2341 int fd;
1945 2342
1946 for (fd = 0; fd < anfdmax; ++fd) 2343 for (fd = 0; fd < anfdmax; ++fd)
… …
1999 ev_tstamp minat; 2396 ev_tstamp minat;
2000 ANHE *minpos; 2397 ANHE *minpos;
2001 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2398 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2002 2399
2003 /* find minimum child */ 2400 /* find minimum child */
2004 if (expect_true (pos + DHEAP - 1 < E)) 2401 if (ecb_expect_true (pos + DHEAP - 1 < E))
2005 { 2402 {
2006 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2403 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2007 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2404 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2008 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2405 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2009 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2406 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
2127 2524
2128/*****************************************************************************/ 2525/*****************************************************************************/
2129 2526
2130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2527#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2131 2528
2132static void noinline ecb_cold 2529ecb_noinline ecb_cold
2530static void
2133evpipe_init (EV_P) 2531evpipe_init (EV_P)
2134{ 2532{
2135 if (!ev_is_active (&pipe_w)) 2533 if (!ev_is_active (&pipe_w))
2136 { 2534 {
2137 int fds [2]; 2535 int fds [2];
… …
2177inline_speed void 2575inline_speed void
2178evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2576evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2179{ 2577{
2180 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2578 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2181 2579
2182 if (expect_true (*flag)) 2580 if (ecb_expect_true (*flag))
2183 return; 2581 return;
2184 2582
2185 *flag = 1; 2583 *flag = 1;
2186 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2584 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2187 2585
… …
2208#endif 2606#endif
2209 { 2607 {
2210#ifdef _WIN32 2608#ifdef _WIN32
2211 WSABUF buf; 2609 WSABUF buf;
2212 DWORD sent; 2610 DWORD sent;
2213 buf.buf = &buf; 2611 buf.buf = (char *)&buf;
2214 buf.len = 1; 2612 buf.len = 1;
2215 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2613 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2216#else 2614#else
2217 write (evpipe [1], &(evpipe [1]), 1); 2615 write (evpipe [1], &(evpipe [1]), 1);
2218#endif 2616#endif
… …
2264 sig_pending = 0; 2662 sig_pending = 0;
2265 2663
2266 ECB_MEMORY_FENCE; 2664 ECB_MEMORY_FENCE;
2267 2665
2268 for (i = EV_NSIG - 1; i--; ) 2666 for (i = EV_NSIG - 1; i--; )
2269 if (expect_false (signals [i].pending)) 2667 if (ecb_expect_false (signals [i].pending))
2270 ev_feed_signal_event (EV_A_ i + 1); 2668 ev_feed_signal_event (EV_A_ i + 1);
2271 } 2669 }
2272#endif 2670#endif
2273 2671
2274#if EV_ASYNC_ENABLE 2672#if EV_ASYNC_ENABLE
… …
2290} 2688}
2291 2689
2292/*****************************************************************************/ 2690/*****************************************************************************/
2293 2691
2294void 2692void
2295ev_feed_signal (int signum) EV_THROW 2693ev_feed_signal (int signum) EV_NOEXCEPT
2296{ 2694{
2297#if EV_MULTIPLICITY 2695#if EV_MULTIPLICITY
2298 EV_P; 2696 EV_P;
2299 ECB_MEMORY_FENCE_ACQUIRE; 2697 ECB_MEMORY_FENCE_ACQUIRE;
2300 EV_A = signals [signum - 1].loop; 2698 EV_A = signals [signum - 1].loop;
… …
2315#endif 2713#endif
2316 2714
2317 ev_feed_signal (signum); 2715 ev_feed_signal (signum);
2318} 2716}
2319 2717
2320void noinline 2718ecb_noinline
2719void
2321ev_feed_signal_event (EV_P_ int signum) EV_THROW 2720ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2322{ 2721{
2323 WL w; 2722 WL w;
2324 2723
2325 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2724 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2326 return; 2725 return;
2327 2726
2328 --signum; 2727 --signum;
2329 2728
2330#if EV_MULTIPLICITY 2729#if EV_MULTIPLICITY
2331 /* it is permissible to try to feed a signal to the wrong loop */ 2730 /* it is permissible to try to feed a signal to the wrong loop */
2332 /* or, likely more useful, feeding a signal nobody is waiting for */ 2731 /* or, likely more useful, feeding a signal nobody is waiting for */
2333 2732
2334 if (expect_false (signals [signum].loop != EV_A)) 2733 if (ecb_expect_false (signals [signum].loop != EV_A))
2335 return; 2734 return;
2336#endif 2735#endif
2337 2736
2338 signals [signum].pending = 0; 2737 signals [signum].pending = 0;
2339 ECB_MEMORY_FENCE_RELEASE; 2738 ECB_MEMORY_FENCE_RELEASE;
… …
2435# include "ev_kqueue.c" 2834# include "ev_kqueue.c"
2436#endif 2835#endif
2437#if EV_USE_EPOLL 2836#if EV_USE_EPOLL
2438# include "ev_epoll.c" 2837# include "ev_epoll.c"
2439#endif 2838#endif
2839#if EV_USE_LINUXAIO
2840# include "ev_linuxaio.c"
2841#endif
2842#if EV_USE_IOURING
2843# include "ev_iouring.c"
2844#endif
2440#if EV_USE_POLL 2845#if EV_USE_POLL
2441# include "ev_poll.c" 2846# include "ev_poll.c"
2442#endif 2847#endif
2443#if EV_USE_SELECT 2848#if EV_USE_SELECT
2444# include "ev_select.c" 2849# include "ev_select.c"
2445#endif 2850#endif
2446 2851
2447int ecb_cold 2852ecb_cold int
2448ev_version_major (void) EV_THROW 2853ev_version_major (void) EV_NOEXCEPT
2449{ 2854{
2450 return EV_VERSION_MAJOR; 2855 return EV_VERSION_MAJOR;
2451} 2856}
2452 2857
2453int ecb_cold 2858ecb_cold int
2454ev_version_minor (void) EV_THROW 2859ev_version_minor (void) EV_NOEXCEPT
2455{ 2860{
2456 return EV_VERSION_MINOR; 2861 return EV_VERSION_MINOR;
2457} 2862}
2458 2863
2459/* return true if we are running with elevated privileges and should ignore env variables */ 2864/* return true if we are running with elevated privileges and should ignore env variables */
2460int inline_size ecb_cold 2865inline_size ecb_cold int
2461enable_secure (void) 2866enable_secure (void)
2462{ 2867{
2463#ifdef _WIN32 2868#ifdef _WIN32
2464 return 0; 2869 return 0;
2465#else 2870#else
2466 return getuid () != geteuid () 2871 return getuid () != geteuid ()
2467 || getgid () != getegid (); 2872 || getgid () != getegid ();
2468#endif 2873#endif
2469} 2874}
2470 2875
2471unsigned int ecb_cold 2876ecb_cold
2877unsigned int
2472ev_supported_backends (void) EV_THROW 2878ev_supported_backends (void) EV_NOEXCEPT
2473{ 2879{
2474 unsigned int flags = 0; 2880 unsigned int flags = 0;
2475 2881
2476 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2882 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2477 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2883 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2478 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2884 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2885 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2886 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2479 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2480 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2888 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2481 2889
2482 return flags; 2890 return flags;
2483} 2891}
2484 2892
2485unsigned int ecb_cold 2893ecb_cold
2894unsigned int
2486ev_recommended_backends (void) EV_THROW 2895ev_recommended_backends (void) EV_NOEXCEPT
2487{ 2896{
2488 unsigned int flags = ev_supported_backends (); 2897 unsigned int flags = ev_supported_backends ();
2489 2898
2490#ifndef __NetBSD__ 2899#ifndef __NetBSD__
2491 /* kqueue is borked on everything but netbsd apparently */ 2900 /* kqueue is borked on everything but netbsd apparently */
… …
2499#endif 2908#endif
2500#ifdef __FreeBSD__ 2909#ifdef __FreeBSD__
2501 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2910 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2502#endif 2911#endif
2503 2912
2913 /* TODO: linuxaio is very experimental */
2914#if !EV_RECOMMEND_LINUXAIO
2915 flags &= ~EVBACKEND_LINUXAIO;
2916#endif
2917 /* TODO: linuxaio is super experimental */
2918#if !EV_RECOMMEND_IOURING
2919 flags &= ~EVBACKEND_IOURING;
2920#endif
2921
2504 return flags; 2922 return flags;
2505} 2923}
2506 2924
2507unsigned int ecb_cold 2925ecb_cold
2926unsigned int
2508ev_embeddable_backends (void) EV_THROW 2927ev_embeddable_backends (void) EV_NOEXCEPT
2509{ 2928{
2510 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2929 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2511 2930
2512 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2931 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2513 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2932 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2514 flags &= ~EVBACKEND_EPOLL; 2933 flags &= ~EVBACKEND_EPOLL;
2515 2934
2935 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
2936
2937 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
2938 * because our backend_fd is the epoll fd we need as fallback.
2939 * if the kernel ever is fixed, this might change...
2940 */
2941
2516 return flags; 2942 return flags;
2517} 2943}
2518 2944
2519unsigned int 2945unsigned int
2520ev_backend (EV_P) EV_THROW 2946ev_backend (EV_P) EV_NOEXCEPT
2521{ 2947{
2522 return backend; 2948 return backend;
2523} 2949}
2524 2950
2525#if EV_FEATURE_API 2951#if EV_FEATURE_API
2526unsigned int 2952unsigned int
2527ev_iteration (EV_P) EV_THROW 2953ev_iteration (EV_P) EV_NOEXCEPT
2528{ 2954{
2529 return loop_count; 2955 return loop_count;
2530} 2956}
2531 2957
2532unsigned int 2958unsigned int
2533ev_depth (EV_P) EV_THROW 2959ev_depth (EV_P) EV_NOEXCEPT
2534{ 2960{
2535 return loop_depth; 2961 return loop_depth;
2536} 2962}
2537 2963
2538void 2964void
2539ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2965ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2540{ 2966{
2541 io_blocktime = interval; 2967 io_blocktime = interval;
2542} 2968}
2543 2969
2544void 2970void
2545ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2971ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2546{ 2972{
2547 timeout_blocktime = interval; 2973 timeout_blocktime = interval;
2548} 2974}
2549 2975
2550void 2976void
2551ev_set_userdata (EV_P_ void *data) EV_THROW 2977ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2552{ 2978{
2553 userdata = data; 2979 userdata = data;
2554} 2980}
2555 2981
2556void * 2982void *
2557ev_userdata (EV_P) EV_THROW 2983ev_userdata (EV_P) EV_NOEXCEPT
2558{ 2984{
2559 return userdata; 2985 return userdata;
2560} 2986}
2561 2987
2562void 2988void
2563ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 2989ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2564{ 2990{
2565 invoke_cb = invoke_pending_cb; 2991 invoke_cb = invoke_pending_cb;
2566} 2992}
2567 2993
2568void 2994void
2569ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 2995ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2570{ 2996{
2571 release_cb = release; 2997 release_cb = release;
2572 acquire_cb = acquire; 2998 acquire_cb = acquire;
2573} 2999}
2574#endif 3000#endif
2575 3001
2576/* initialise a loop structure, must be zero-initialised */ 3002/* initialise a loop structure, must be zero-initialised */
2577static void noinline ecb_cold 3003ecb_noinline ecb_cold
3004static void
2578loop_init (EV_P_ unsigned int flags) EV_THROW 3005loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2579{ 3006{
2580 if (!backend) 3007 if (!backend)
2581 { 3008 {
2582 origflags = flags; 3009 origflags = flags;
2583 3010
… …
2641 3068
2642 if (!(flags & EVBACKEND_MASK)) 3069 if (!(flags & EVBACKEND_MASK))
2643 flags |= ev_recommended_backends (); 3070 flags |= ev_recommended_backends ();
2644 3071
2645#if EV_USE_IOCP 3072#if EV_USE_IOCP
2646 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3073 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2647#endif 3074#endif
2648#if EV_USE_PORT 3075#if EV_USE_PORT
2649 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3076 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2650#endif 3077#endif
2651#if EV_USE_KQUEUE 3078#if EV_USE_KQUEUE
2652 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3079 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3080#endif
3081#if EV_USE_IOURING
3082 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3083#endif
3084#if EV_USE_LINUXAIO
3085 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2653#endif 3086#endif
2654#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2655 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3088 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2656#endif 3089#endif
2657#if EV_USE_POLL 3090#if EV_USE_POLL
2658 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3091 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2659#endif 3092#endif
2660#if EV_USE_SELECT 3093#if EV_USE_SELECT
2661 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3094 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2662#endif 3095#endif
2663 3096
2664 ev_prepare_init (&pending_w, pendingcb); 3097 ev_prepare_init (&pending_w, pendingcb);
2665 3098
2666#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3099#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2669#endif 3102#endif
2670 } 3103 }
2671} 3104}
2672 3105
2673/* free up a loop structure */ 3106/* free up a loop structure */
2674void ecb_cold 3107ecb_cold
3108void
2675ev_loop_destroy (EV_P) 3109ev_loop_destroy (EV_P)
2676{ 3110{
2677 int i; 3111 int i;
2678 3112
2679#if EV_MULTIPLICITY 3113#if EV_MULTIPLICITY
… …
2682 return; 3116 return;
2683#endif 3117#endif
2684 3118
2685#if EV_CLEANUP_ENABLE 3119#if EV_CLEANUP_ENABLE
2686 /* queue cleanup watchers (and execute them) */ 3120 /* queue cleanup watchers (and execute them) */
2687 if (expect_false (cleanupcnt)) 3121 if (ecb_expect_false (cleanupcnt))
2688 { 3122 {
2689 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3123 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2690 EV_INVOKE_PENDING; 3124 EV_INVOKE_PENDING;
2691 } 3125 }
2692#endif 3126#endif
… …
2720 3154
2721 if (backend_fd >= 0) 3155 if (backend_fd >= 0)
2722 close (backend_fd); 3156 close (backend_fd);
2723 3157
2724#if EV_USE_IOCP 3158#if EV_USE_IOCP
2725 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3159 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2726#endif 3160#endif
2727#if EV_USE_PORT 3161#if EV_USE_PORT
2728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3162 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2729#endif 3163#endif
2730#if EV_USE_KQUEUE 3164#if EV_USE_KQUEUE
2731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3165 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3166#endif
3167#if EV_USE_IOURING
3168 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3169#endif
3170#if EV_USE_LINUXAIO
3171 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2732#endif 3172#endif
2733#if EV_USE_EPOLL 3173#if EV_USE_EPOLL
2734 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3174 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2735#endif 3175#endif
2736#if EV_USE_POLL 3176#if EV_USE_POLL
2737 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3177 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2738#endif 3178#endif
2739#if EV_USE_SELECT 3179#if EV_USE_SELECT
2740 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3180 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2741#endif 3181#endif
2742 3182
2743 for (i = NUMPRI; i--; ) 3183 for (i = NUMPRI; i--; )
2744 { 3184 {
2745 array_free (pending, [i]); 3185 array_free (pending, [i]);
… …
2787 3227
2788inline_size void 3228inline_size void
2789loop_fork (EV_P) 3229loop_fork (EV_P)
2790{ 3230{
2791#if EV_USE_PORT 3231#if EV_USE_PORT
2792 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3232 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2793#endif 3233#endif
2794#if EV_USE_KQUEUE 3234#if EV_USE_KQUEUE
2795 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3235 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3236#endif
3237#if EV_USE_IOURING
3238 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3239#endif
3240#if EV_USE_LINUXAIO
3241 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2796#endif 3242#endif
2797#if EV_USE_EPOLL 3243#if EV_USE_EPOLL
2798 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3244 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2799#endif 3245#endif
2800#if EV_USE_INOTIFY 3246#if EV_USE_INOTIFY
2801 infy_fork (EV_A); 3247 infy_fork (EV_A);
2802#endif 3248#endif
2803 3249
2804#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3250#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2805 if (ev_is_active (&pipe_w)) 3251 if (ev_is_active (&pipe_w) && postfork != 2)
2806 { 3252 {
2807 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3253 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2808 3254
2809 ev_ref (EV_A); 3255 ev_ref (EV_A);
2810 ev_io_stop (EV_A_ &pipe_w); 3256 ev_io_stop (EV_A_ &pipe_w);
… …
2821 postfork = 0; 3267 postfork = 0;
2822} 3268}
2823 3269
2824#if EV_MULTIPLICITY 3270#if EV_MULTIPLICITY
2825 3271
3272ecb_cold
2826struct ev_loop * ecb_cold 3273struct ev_loop *
2827ev_loop_new (unsigned int flags) EV_THROW 3274ev_loop_new (unsigned int flags) EV_NOEXCEPT
2828{ 3275{
2829 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3276 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2830 3277
2831 memset (EV_A, 0, sizeof (struct ev_loop)); 3278 memset (EV_A, 0, sizeof (struct ev_loop));
2832 loop_init (EV_A_ flags); 3279 loop_init (EV_A_ flags);
… …
2839} 3286}
2840 3287
2841#endif /* multiplicity */ 3288#endif /* multiplicity */
2842 3289
2843#if EV_VERIFY 3290#if EV_VERIFY
2844static void noinline ecb_cold 3291ecb_noinline ecb_cold
3292static void
2845verify_watcher (EV_P_ W w) 3293verify_watcher (EV_P_ W w)
2846{ 3294{
2847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3295 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2848 3296
2849 if (w->pending) 3297 if (w->pending)
2850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3298 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2851} 3299}
2852 3300
2853static void noinline ecb_cold 3301ecb_noinline ecb_cold
3302static void
2854verify_heap (EV_P_ ANHE *heap, int N) 3303verify_heap (EV_P_ ANHE *heap, int N)
2855{ 3304{
2856 int i; 3305 int i;
2857 3306
2858 for (i = HEAP0; i < N + HEAP0; ++i) 3307 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2863 3312
2864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3313 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2865 } 3314 }
2866} 3315}
2867 3316
2868static void noinline ecb_cold 3317ecb_noinline ecb_cold
3318static void
2869array_verify (EV_P_ W *ws, int cnt) 3319array_verify (EV_P_ W *ws, int cnt)
2870{ 3320{
2871 while (cnt--) 3321 while (cnt--)
2872 { 3322 {
2873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3323 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2876} 3326}
2877#endif 3327#endif
2878 3328
2879#if EV_FEATURE_API 3329#if EV_FEATURE_API
2880void ecb_cold 3330void ecb_cold
2881ev_verify (EV_P) EV_THROW 3331ev_verify (EV_P) EV_NOEXCEPT
2882{ 3332{
2883#if EV_VERIFY 3333#if EV_VERIFY
2884 int i; 3334 int i;
2885 WL w, w2; 3335 WL w, w2;
2886 3336
… …
2962#endif 3412#endif
2963} 3413}
2964#endif 3414#endif
2965 3415
2966#if EV_MULTIPLICITY 3416#if EV_MULTIPLICITY
3417ecb_cold
2967struct ev_loop * ecb_cold 3418struct ev_loop *
2968#else 3419#else
2969int 3420int
2970#endif 3421#endif
2971ev_default_loop (unsigned int flags) EV_THROW 3422ev_default_loop (unsigned int flags) EV_NOEXCEPT
2972{ 3423{
2973 if (!ev_default_loop_ptr) 3424 if (!ev_default_loop_ptr)
2974 { 3425 {
2975#if EV_MULTIPLICITY 3426#if EV_MULTIPLICITY
2976 EV_P = ev_default_loop_ptr = &default_loop_struct; 3427 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2995 3446
2996 return ev_default_loop_ptr; 3447 return ev_default_loop_ptr;
2997} 3448}
2998 3449
2999void 3450void
3000ev_loop_fork (EV_P) EV_THROW 3451ev_loop_fork (EV_P) EV_NOEXCEPT
3001{ 3452{
3002 postfork = 1; 3453 postfork = 1;
3003} 3454}
3004 3455
3005/*****************************************************************************/ 3456/*****************************************************************************/
… …
3009{ 3460{
3010 EV_CB_INVOKE ((W)w, revents); 3461 EV_CB_INVOKE ((W)w, revents);
3011} 3462}
3012 3463
3013unsigned int 3464unsigned int
3014ev_pending_count (EV_P) EV_THROW 3465ev_pending_count (EV_P) EV_NOEXCEPT
3015{ 3466{
3016 int pri; 3467 int pri;
3017 unsigned int count = 0; 3468 unsigned int count = 0;
3018 3469
3019 for (pri = NUMPRI; pri--; ) 3470 for (pri = NUMPRI; pri--; )
3020 count += pendingcnt [pri]; 3471 count += pendingcnt [pri];
3021 3472
3022 return count; 3473 return count;
3023} 3474}
3024 3475
3025void noinline 3476ecb_noinline
3477void
3026ev_invoke_pending (EV_P) 3478ev_invoke_pending (EV_P)
3027{ 3479{
3028 pendingpri = NUMPRI; 3480 pendingpri = NUMPRI;
3029 3481
3030 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3482 do
3031 { 3483 {
3032 --pendingpri; 3484 --pendingpri;
3033 3485
3486 /* pendingpri possibly gets modified in the inner loop */
3034 while (pendingcnt [pendingpri]) 3487 while (pendingcnt [pendingpri])
3035 { 3488 {
3036 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3489 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3037 3490
3038 p->w->pending = 0; 3491 p->w->pending = 0;
3039 EV_CB_INVOKE (p->w, p->events); 3492 EV_CB_INVOKE (p->w, p->events);
3040 EV_FREQUENT_CHECK; 3493 EV_FREQUENT_CHECK;
3041 } 3494 }
3042 } 3495 }
3496 while (pendingpri);
3043} 3497}
3044 3498
3045#if EV_IDLE_ENABLE 3499#if EV_IDLE_ENABLE
3046/* make idle watchers pending. this handles the "call-idle */ 3500/* make idle watchers pending. this handles the "call-idle */
3047/* only when higher priorities are idle" logic */ 3501/* only when higher priorities are idle" logic */
3048inline_size void 3502inline_size void
3049idle_reify (EV_P) 3503idle_reify (EV_P)
3050{ 3504{
3051 if (expect_false (idleall)) 3505 if (ecb_expect_false (idleall))
3052 { 3506 {
3053 int pri; 3507 int pri;
3054 3508
3055 for (pri = NUMPRI; pri--; ) 3509 for (pri = NUMPRI; pri--; )
3056 { 3510 {
… …
3105 } 3559 }
3106} 3560}
3107 3561
3108#if EV_PERIODIC_ENABLE 3562#if EV_PERIODIC_ENABLE
3109 3563
3110static void noinline 3564ecb_noinline
3565static void
3111periodic_recalc (EV_P_ ev_periodic *w) 3566periodic_recalc (EV_P_ ev_periodic *w)
3112{ 3567{
3113 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3568 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3114 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3569 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3115 3570
… …
3117 while (at <= ev_rt_now) 3572 while (at <= ev_rt_now)
3118 { 3573 {
3119 ev_tstamp nat = at + w->interval; 3574 ev_tstamp nat = at + w->interval;
3120 3575
3121 /* when resolution fails us, we use ev_rt_now */ 3576 /* when resolution fails us, we use ev_rt_now */
3122 if (expect_false (nat == at)) 3577 if (ecb_expect_false (nat == at))
3123 { 3578 {
3124 at = ev_rt_now; 3579 at = ev_rt_now;
3125 break; 3580 break;
3126 } 3581 }
3127 3582
… …
3173 } 3628 }
3174} 3629}
3175 3630
3176/* simply recalculate all periodics */ 3631/* simply recalculate all periodics */
3177/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3632/* TODO: maybe ensure that at least one event happens when jumping forward? */
3178static void noinline ecb_cold 3633ecb_noinline ecb_cold
3634static void
3179periodics_reschedule (EV_P) 3635periodics_reschedule (EV_P)
3180{ 3636{
3181 int i; 3637 int i;
3182 3638
3183 /* adjust periodics after time jump */ 3639 /* adjust periodics after time jump */
… …
3196 reheap (periodics, periodiccnt); 3652 reheap (periodics, periodiccnt);
3197} 3653}
3198#endif 3654#endif
3199 3655
3200/* adjust all timers by a given offset */ 3656/* adjust all timers by a given offset */
3201static void noinline ecb_cold 3657ecb_noinline ecb_cold
3658static void
3202timers_reschedule (EV_P_ ev_tstamp adjust) 3659timers_reschedule (EV_P_ ev_tstamp adjust)
3203{ 3660{
3204 int i; 3661 int i;
3205 3662
3206 for (i = 0; i < timercnt; ++i) 3663 for (i = 0; i < timercnt; ++i)
… …
3215/* also detect if there was a timejump, and act accordingly */ 3672/* also detect if there was a timejump, and act accordingly */
3216inline_speed void 3673inline_speed void
3217time_update (EV_P_ ev_tstamp max_block) 3674time_update (EV_P_ ev_tstamp max_block)
3218{ 3675{
3219#if EV_USE_MONOTONIC 3676#if EV_USE_MONOTONIC
3220 if (expect_true (have_monotonic)) 3677 if (ecb_expect_true (have_monotonic))
3221 { 3678 {
3222 int i; 3679 int i;
3223 ev_tstamp odiff = rtmn_diff; 3680 ev_tstamp odiff = rtmn_diff;
3224 3681
3225 mn_now = get_clock (); 3682 mn_now = get_clock ();
3226 3683
3227 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3684 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3228 /* interpolate in the meantime */ 3685 /* interpolate in the meantime */
3229 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3686 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
3230 { 3687 {
3231 ev_rt_now = rtmn_diff + mn_now; 3688 ev_rt_now = rtmn_diff + mn_now;
3232 return; 3689 return;
3233 } 3690 }
3234 3691
… …
3248 ev_tstamp diff; 3705 ev_tstamp diff;
3249 rtmn_diff = ev_rt_now - mn_now; 3706 rtmn_diff = ev_rt_now - mn_now;
3250 3707
3251 diff = odiff - rtmn_diff; 3708 diff = odiff - rtmn_diff;
3252 3709
3253 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3710 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
3254 return; /* all is well */ 3711 return; /* all is well */
3255 3712
3256 ev_rt_now = ev_time (); 3713 ev_rt_now = ev_time ();
3257 mn_now = get_clock (); 3714 mn_now = get_clock ();
3258 now_floor = mn_now; 3715 now_floor = mn_now;
… …
3267 else 3724 else
3268#endif 3725#endif
3269 { 3726 {
3270 ev_rt_now = ev_time (); 3727 ev_rt_now = ev_time ();
3271 3728
3272 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3729 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
3273 { 3730 {
3274 /* adjust timers. this is easy, as the offset is the same for all of them */ 3731 /* adjust timers. this is easy, as the offset is the same for all of them */
3275 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3732 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3276#if EV_PERIODIC_ENABLE 3733#if EV_PERIODIC_ENABLE
3277 periodics_reschedule (EV_A); 3734 periodics_reschedule (EV_A);
… …
3300#if EV_VERIFY >= 2 3757#if EV_VERIFY >= 2
3301 ev_verify (EV_A); 3758 ev_verify (EV_A);
3302#endif 3759#endif
3303 3760
3304#ifndef _WIN32 3761#ifndef _WIN32
3305 if (expect_false (curpid)) /* penalise the forking check even more */ 3762 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3306 if (expect_false (getpid () != curpid)) 3763 if (ecb_expect_false (getpid () != curpid))
3307 { 3764 {
3308 curpid = getpid (); 3765 curpid = getpid ();
3309 postfork = 1; 3766 postfork = 1;
3310 } 3767 }
3311#endif 3768#endif
3312 3769
3313#if EV_FORK_ENABLE 3770#if EV_FORK_ENABLE
3314 /* we might have forked, so queue fork handlers */ 3771 /* we might have forked, so queue fork handlers */
3315 if (expect_false (postfork)) 3772 if (ecb_expect_false (postfork))
3316 if (forkcnt) 3773 if (forkcnt)
3317 { 3774 {
3318 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3775 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3319 EV_INVOKE_PENDING; 3776 EV_INVOKE_PENDING;
3320 } 3777 }
3321#endif 3778#endif
3322 3779
3323#if EV_PREPARE_ENABLE 3780#if EV_PREPARE_ENABLE
3324 /* queue prepare watchers (and execute them) */ 3781 /* queue prepare watchers (and execute them) */
3325 if (expect_false (preparecnt)) 3782 if (ecb_expect_false (preparecnt))
3326 { 3783 {
3327 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3784 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3328 EV_INVOKE_PENDING; 3785 EV_INVOKE_PENDING;
3329 } 3786 }
3330#endif 3787#endif
3331 3788
3332 if (expect_false (loop_done)) 3789 if (ecb_expect_false (loop_done))
3333 break; 3790 break;
3334 3791
3335 /* we might have forked, so reify kernel state if necessary */ 3792 /* we might have forked, so reify kernel state if necessary */
3336 if (expect_false (postfork)) 3793 if (ecb_expect_false (postfork))
3337 loop_fork (EV_A); 3794 loop_fork (EV_A);
3338 3795
3339 /* update fd-related kernel structures */ 3796 /* update fd-related kernel structures */
3340 fd_reify (EV_A); 3797 fd_reify (EV_A);
3341 3798
… …
3353 /* from now on, we want a pipe-wake-up */ 3810 /* from now on, we want a pipe-wake-up */
3354 pipe_write_wanted = 1; 3811 pipe_write_wanted = 1;
3355 3812
3356 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3813 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3357 3814
3358 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3815 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3359 { 3816 {
3360 waittime = MAX_BLOCKTIME; 3817 waittime = MAX_BLOCKTIME;
3361 3818
3362 if (timercnt) 3819 if (timercnt)
3363 { 3820 {
… …
3372 if (waittime > to) waittime = to; 3829 if (waittime > to) waittime = to;
3373 } 3830 }
3374#endif 3831#endif
3375 3832
3376 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3833 /* don't let timeouts decrease the waittime below timeout_blocktime */
3377 if (expect_false (waittime < timeout_blocktime)) 3834 if (ecb_expect_false (waittime < timeout_blocktime))
3378 waittime = timeout_blocktime; 3835 waittime = timeout_blocktime;
3379 3836
3380 /* at this point, we NEED to wait, so we have to ensure */ 3837 /* at this point, we NEED to wait, so we have to ensure */
3381 /* to pass a minimum nonzero value to the backend */ 3838 /* to pass a minimum nonzero value to the backend */
3382 if (expect_false (waittime < backend_mintime)) 3839 if (ecb_expect_false (waittime < backend_mintime))
3383 waittime = backend_mintime; 3840 waittime = backend_mintime;
3384 3841
3385 /* extra check because io_blocktime is commonly 0 */ 3842 /* extra check because io_blocktime is commonly 0 */
3386 if (expect_false (io_blocktime)) 3843 if (ecb_expect_false (io_blocktime))
3387 { 3844 {
3388 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3845 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3389 3846
3390 if (sleeptime > waittime - backend_mintime) 3847 if (sleeptime > waittime - backend_mintime)
3391 sleeptime = waittime - backend_mintime; 3848 sleeptime = waittime - backend_mintime;
3392 3849
3393 if (expect_true (sleeptime > 0.)) 3850 if (ecb_expect_true (sleeptime > 0.))
3394 { 3851 {
3395 ev_sleep (sleeptime); 3852 ev_sleep (sleeptime);
3396 waittime -= sleeptime; 3853 waittime -= sleeptime;
3397 } 3854 }
3398 } 3855 }
… …
3412 { 3869 {
3413 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3870 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3414 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3871 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3415 } 3872 }
3416 3873
3417
3418 /* update ev_rt_now, do magic */ 3874 /* update ev_rt_now, do magic */
3419 time_update (EV_A_ waittime + sleeptime); 3875 time_update (EV_A_ waittime + sleeptime);
3420 } 3876 }
3421 3877
3422 /* queue pending timers and reschedule them */ 3878 /* queue pending timers and reschedule them */
… …
3430 idle_reify (EV_A); 3886 idle_reify (EV_A);
3431#endif 3887#endif
3432 3888
3433#if EV_CHECK_ENABLE 3889#if EV_CHECK_ENABLE
3434 /* queue check watchers, to be executed first */ 3890 /* queue check watchers, to be executed first */
3435 if (expect_false (checkcnt)) 3891 if (ecb_expect_false (checkcnt))
3436 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3892 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3437#endif 3893#endif
3438 3894
3439 EV_INVOKE_PENDING; 3895 EV_INVOKE_PENDING;
3440 } 3896 }
3441 while (expect_true ( 3897 while (ecb_expect_true (
3442 activecnt 3898 activecnt
3443 && !loop_done 3899 && !loop_done
3444 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3900 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3445 )); 3901 ));
3446 3902
… …
3453 3909
3454 return activecnt; 3910 return activecnt;
3455} 3911}
3456 3912
3457void 3913void
3458ev_break (EV_P_ int how) EV_THROW 3914ev_break (EV_P_ int how) EV_NOEXCEPT
3459{ 3915{
3460 loop_done = how; 3916 loop_done = how;
3461} 3917}
3462 3918
3463void 3919void
3464ev_ref (EV_P) EV_THROW 3920ev_ref (EV_P) EV_NOEXCEPT
3465{ 3921{
3466 ++activecnt; 3922 ++activecnt;
3467} 3923}
3468 3924
3469void 3925void
3470ev_unref (EV_P) EV_THROW 3926ev_unref (EV_P) EV_NOEXCEPT
3471{ 3927{
3472 --activecnt; 3928 --activecnt;
3473} 3929}
3474 3930
3475void 3931void
3476ev_now_update (EV_P) EV_THROW 3932ev_now_update (EV_P) EV_NOEXCEPT
3477{ 3933{
3478 time_update (EV_A_ 1e100); 3934 time_update (EV_A_ 1e100);
3479} 3935}
3480 3936
3481void 3937void
3482ev_suspend (EV_P) EV_THROW 3938ev_suspend (EV_P) EV_NOEXCEPT
3483{ 3939{
3484 ev_now_update (EV_A); 3940 ev_now_update (EV_A);
3485} 3941}
3486 3942
3487void 3943void
3488ev_resume (EV_P) EV_THROW 3944ev_resume (EV_P) EV_NOEXCEPT
3489{ 3945{
3490 ev_tstamp mn_prev = mn_now; 3946 ev_tstamp mn_prev = mn_now;
3491 3947
3492 ev_now_update (EV_A); 3948 ev_now_update (EV_A);
3493 timers_reschedule (EV_A_ mn_now - mn_prev); 3949 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3510inline_size void 3966inline_size void
3511wlist_del (WL *head, WL elem) 3967wlist_del (WL *head, WL elem)
3512{ 3968{
3513 while (*head) 3969 while (*head)
3514 { 3970 {
3515 if (expect_true (*head == elem)) 3971 if (ecb_expect_true (*head == elem))
3516 { 3972 {
3517 *head = elem->next; 3973 *head = elem->next;
3518 break; 3974 break;
3519 } 3975 }
3520 3976
… …
3532 w->pending = 0; 3988 w->pending = 0;
3533 } 3989 }
3534} 3990}
3535 3991
3536int 3992int
3537ev_clear_pending (EV_P_ void *w) EV_THROW 3993ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3538{ 3994{
3539 W w_ = (W)w; 3995 W w_ = (W)w;
3540 int pending = w_->pending; 3996 int pending = w_->pending;
3541 3997
3542 if (expect_true (pending)) 3998 if (ecb_expect_true (pending))
3543 { 3999 {
3544 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4000 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3545 p->w = (W)&pending_w; 4001 p->w = (W)&pending_w;
3546 w_->pending = 0; 4002 w_->pending = 0;
3547 return p->events; 4003 return p->events;
… …
3574 w->active = 0; 4030 w->active = 0;
3575} 4031}
3576 4032
3577/*****************************************************************************/ 4033/*****************************************************************************/
3578 4034
3579void noinline 4035ecb_noinline
4036void
3580ev_io_start (EV_P_ ev_io *w) EV_THROW 4037ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3581{ 4038{
3582 int fd = w->fd; 4039 int fd = w->fd;
3583 4040
3584 if (expect_false (ev_is_active (w))) 4041 if (ecb_expect_false (ev_is_active (w)))
3585 return; 4042 return;
3586 4043
3587 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4044 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3588 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4045 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3589 4046
4047#if EV_VERIFY >= 2
4048 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4049#endif
3590 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3591 4051
3592 ev_start (EV_A_ (W)w, 1); 4052 ev_start (EV_A_ (W)w, 1);
3593 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4053 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3594 wlist_add (&anfds[fd].head, (WL)w); 4054 wlist_add (&anfds[fd].head, (WL)w);
3595 4055
3596 /* common bug, apparently */ 4056 /* common bug, apparently */
3597 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4057 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3598 4058
… …
3600 w->events &= ~EV__IOFDSET; 4060 w->events &= ~EV__IOFDSET;
3601 4061
3602 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
3603} 4063}
3604 4064
3605void noinline 4065ecb_noinline
4066void
3606ev_io_stop (EV_P_ ev_io *w) EV_THROW 4067ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3607{ 4068{
3608 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
3609 if (expect_false (!ev_is_active (w))) 4070 if (ecb_expect_false (!ev_is_active (w)))
3610 return; 4071 return;
3611 4072
3612 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4073 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3613 4074
4075#if EV_VERIFY >= 2
4076 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4077#endif
3614 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
3615 4079
3616 wlist_del (&anfds[w->fd].head, (WL)w); 4080 wlist_del (&anfds[w->fd].head, (WL)w);
3617 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
3618 4082
3619 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4083 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3620 4084
3621 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3622} 4086}
3623 4087
3624void noinline 4088ecb_noinline
4089void
3625ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4090ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3626{ 4091{
3627 if (expect_false (ev_is_active (w))) 4092 if (ecb_expect_false (ev_is_active (w)))
3628 return; 4093 return;
3629 4094
3630 ev_at (w) += mn_now; 4095 ev_at (w) += mn_now;
3631 4096
3632 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4097 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3633 4098
3634 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3635 4100
3636 ++timercnt; 4101 ++timercnt;
3637 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4102 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3638 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4103 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3639 ANHE_w (timers [ev_active (w)]) = (WT)w; 4104 ANHE_w (timers [ev_active (w)]) = (WT)w;
3640 ANHE_at_cache (timers [ev_active (w)]); 4105 ANHE_at_cache (timers [ev_active (w)]);
3641 upheap (timers, ev_active (w)); 4106 upheap (timers, ev_active (w));
3642 4107
3643 EV_FREQUENT_CHECK; 4108 EV_FREQUENT_CHECK;
3644 4109
3645 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4110 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3646} 4111}
3647 4112
3648void noinline 4113ecb_noinline
4114void
3649ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4115ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3650{ 4116{
3651 clear_pending (EV_A_ (W)w); 4117 clear_pending (EV_A_ (W)w);
3652 if (expect_false (!ev_is_active (w))) 4118 if (ecb_expect_false (!ev_is_active (w)))
3653 return; 4119 return;
3654 4120
3655 EV_FREQUENT_CHECK; 4121 EV_FREQUENT_CHECK;
3656 4122
3657 { 4123 {
… …
3659 4125
3660 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4126 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3661 4127
3662 --timercnt; 4128 --timercnt;
3663 4129
3664 if (expect_true (active < timercnt + HEAP0)) 4130 if (ecb_expect_true (active < timercnt + HEAP0))
3665 { 4131 {
3666 timers [active] = timers [timercnt + HEAP0]; 4132 timers [active] = timers [timercnt + HEAP0];
3667 adjustheap (timers, timercnt, active); 4133 adjustheap (timers, timercnt, active);
3668 } 4134 }
3669 } 4135 }
… …
3673 ev_stop (EV_A_ (W)w); 4139 ev_stop (EV_A_ (W)w);
3674 4140
3675 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
3676} 4142}
3677 4143
3678void noinline 4144ecb_noinline
4145void
3679ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4146ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3680{ 4147{
3681 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3682 4149
3683 clear_pending (EV_A_ (W)w); 4150 clear_pending (EV_A_ (W)w);
3684 4151
… …
3701 4168
3702 EV_FREQUENT_CHECK; 4169 EV_FREQUENT_CHECK;
3703} 4170}
3704 4171
3705ev_tstamp 4172ev_tstamp
3706ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4173ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3707{ 4174{
3708 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4175 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3709} 4176}
3710 4177
3711#if EV_PERIODIC_ENABLE 4178#if EV_PERIODIC_ENABLE
3712void noinline 4179ecb_noinline
4180void
3713ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4181ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3714{ 4182{
3715 if (expect_false (ev_is_active (w))) 4183 if (ecb_expect_false (ev_is_active (w)))
3716 return; 4184 return;
3717 4185
3718 if (w->reschedule_cb) 4186 if (w->reschedule_cb)
3719 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4187 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3720 else if (w->interval) 4188 else if (w->interval)
… …
3727 4195
3728 EV_FREQUENT_CHECK; 4196 EV_FREQUENT_CHECK;
3729 4197
3730 ++periodiccnt; 4198 ++periodiccnt;
3731 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4199 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3732 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4200 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3733 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4201 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3734 ANHE_at_cache (periodics [ev_active (w)]); 4202 ANHE_at_cache (periodics [ev_active (w)]);
3735 upheap (periodics, ev_active (w)); 4203 upheap (periodics, ev_active (w));
3736 4204
3737 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
3738 4206
3739 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4207 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3740} 4208}
3741 4209
3742void noinline 4210ecb_noinline
4211void
3743ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4212ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3744{ 4213{
3745 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3746 if (expect_false (!ev_is_active (w))) 4215 if (ecb_expect_false (!ev_is_active (w)))
3747 return; 4216 return;
3748 4217
3749 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3750 4219
3751 { 4220 {
… …
3753 4222
3754 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4223 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3755 4224
3756 --periodiccnt; 4225 --periodiccnt;
3757 4226
3758 if (expect_true (active < periodiccnt + HEAP0)) 4227 if (ecb_expect_true (active < periodiccnt + HEAP0))
3759 { 4228 {
3760 periodics [active] = periodics [periodiccnt + HEAP0]; 4229 periodics [active] = periodics [periodiccnt + HEAP0];
3761 adjustheap (periodics, periodiccnt, active); 4230 adjustheap (periodics, periodiccnt, active);
3762 } 4231 }
3763 } 4232 }
… …
3765 ev_stop (EV_A_ (W)w); 4234 ev_stop (EV_A_ (W)w);
3766 4235
3767 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3768} 4237}
3769 4238
3770void noinline 4239ecb_noinline
4240void
3771ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4241ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3772{ 4242{
3773 /* TODO: use adjustheap and recalculation */ 4243 /* TODO: use adjustheap and recalculation */
3774 ev_periodic_stop (EV_A_ w); 4244 ev_periodic_stop (EV_A_ w);
3775 ev_periodic_start (EV_A_ w); 4245 ev_periodic_start (EV_A_ w);
3776} 4246}
… …
3780# define SA_RESTART 0 4250# define SA_RESTART 0
3781#endif 4251#endif
3782 4252
3783#if EV_SIGNAL_ENABLE 4253#if EV_SIGNAL_ENABLE
3784 4254
3785void noinline 4255ecb_noinline
4256void
3786ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4257ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3787{ 4258{
3788 if (expect_false (ev_is_active (w))) 4259 if (ecb_expect_false (ev_is_active (w)))
3789 return; 4260 return;
3790 4261
3791 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4262 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3792 4263
3793#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
… …
3862 } 4333 }
3863 4334
3864 EV_FREQUENT_CHECK; 4335 EV_FREQUENT_CHECK;
3865} 4336}
3866 4337
3867void noinline 4338ecb_noinline
4339void
3868ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4340ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3869{ 4341{
3870 clear_pending (EV_A_ (W)w); 4342 clear_pending (EV_A_ (W)w);
3871 if (expect_false (!ev_is_active (w))) 4343 if (ecb_expect_false (!ev_is_active (w)))
3872 return; 4344 return;
3873 4345
3874 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3875 4347
3876 wlist_del (&signals [w->signum - 1].head, (WL)w); 4348 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3904#endif 4376#endif
3905 4377
3906#if EV_CHILD_ENABLE 4378#if EV_CHILD_ENABLE
3907 4379
3908void 4380void
3909ev_child_start (EV_P_ ev_child *w) EV_THROW 4381ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3910{ 4382{
3911#if EV_MULTIPLICITY 4383#if EV_MULTIPLICITY
3912 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4384 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3913#endif 4385#endif
3914 if (expect_false (ev_is_active (w))) 4386 if (ecb_expect_false (ev_is_active (w)))
3915 return; 4387 return;
3916 4388
3917 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3918 4390
3919 ev_start (EV_A_ (W)w, 1); 4391 ev_start (EV_A_ (W)w, 1);
… …
3921 4393
3922 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3923} 4395}
3924 4396
3925void 4397void
3926ev_child_stop (EV_P_ ev_child *w) EV_THROW 4398ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3927{ 4399{
3928 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3929 if (expect_false (!ev_is_active (w))) 4401 if (ecb_expect_false (!ev_is_active (w)))
3930 return; 4402 return;
3931 4403
3932 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
3933 4405
3934 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4406 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3948 4420
3949#define DEF_STAT_INTERVAL 5.0074891 4421#define DEF_STAT_INTERVAL 5.0074891
3950#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4422#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3951#define MIN_STAT_INTERVAL 0.1074891 4423#define MIN_STAT_INTERVAL 0.1074891
3952 4424
3953static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4425ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3954 4426
3955#if EV_USE_INOTIFY 4427#if EV_USE_INOTIFY
3956 4428
3957/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4429/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3958# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4430# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3959 4431
3960static void noinline 4432ecb_noinline
4433static void
3961infy_add (EV_P_ ev_stat *w) 4434infy_add (EV_P_ ev_stat *w)
3962{ 4435{
3963 w->wd = inotify_add_watch (fs_fd, w->path, 4436 w->wd = inotify_add_watch (fs_fd, w->path,
3964 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4437 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3965 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4438 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4029 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4502 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4030 ev_timer_again (EV_A_ &w->timer); 4503 ev_timer_again (EV_A_ &w->timer);
4031 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4504 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4032} 4505}
4033 4506
4034static void noinline 4507ecb_noinline
4508static void
4035infy_del (EV_P_ ev_stat *w) 4509infy_del (EV_P_ ev_stat *w)
4036{ 4510{
4037 int slot; 4511 int slot;
4038 int wd = w->wd; 4512 int wd = w->wd;
4039 4513
… …
4046 4520
4047 /* remove this watcher, if others are watching it, they will rearm */ 4521 /* remove this watcher, if others are watching it, they will rearm */
4048 inotify_rm_watch (fs_fd, wd); 4522 inotify_rm_watch (fs_fd, wd);
4049} 4523}
4050 4524
4051static void noinline 4525ecb_noinline
4526static void
4052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4527infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4053{ 4528{
4054 if (slot < 0) 4529 if (slot < 0)
4055 /* overflow, need to check for all hash slots */ 4530 /* overflow, need to check for all hash slots */
4056 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4531 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4092 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4567 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4093 ofs += sizeof (struct inotify_event) + ev->len; 4568 ofs += sizeof (struct inotify_event) + ev->len;
4094 } 4569 }
4095} 4570}
4096 4571
4097inline_size void ecb_cold 4572inline_size ecb_cold
4573void
4098ev_check_2625 (EV_P) 4574ev_check_2625 (EV_P)
4099{ 4575{
4100 /* kernels < 2.6.25 are borked 4576 /* kernels < 2.6.25 are borked
4101 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4577 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4102 */ 4578 */
… …
4192#else 4668#else
4193# define EV_LSTAT(p,b) lstat (p, b) 4669# define EV_LSTAT(p,b) lstat (p, b)
4194#endif 4670#endif
4195 4671
4196void 4672void
4197ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4673ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4198{ 4674{
4199 if (lstat (w->path, &w->attr) < 0) 4675 if (lstat (w->path, &w->attr) < 0)
4200 w->attr.st_nlink = 0; 4676 w->attr.st_nlink = 0;
4201 else if (!w->attr.st_nlink) 4677 else if (!w->attr.st_nlink)
4202 w->attr.st_nlink = 1; 4678 w->attr.st_nlink = 1;
4203} 4679}
4204 4680
4205static void noinline 4681ecb_noinline
4682static void
4206stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4683stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4207{ 4684{
4208 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4685 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4209 4686
4210 ev_statdata prev = w->attr; 4687 ev_statdata prev = w->attr;
… …
4241 ev_feed_event (EV_A_ w, EV_STAT); 4718 ev_feed_event (EV_A_ w, EV_STAT);
4242 } 4719 }
4243} 4720}
4244 4721
4245void 4722void
4246ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4723ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4247{ 4724{
4248 if (expect_false (ev_is_active (w))) 4725 if (ecb_expect_false (ev_is_active (w)))
4249 return; 4726 return;
4250 4727
4251 ev_stat_stat (EV_A_ w); 4728 ev_stat_stat (EV_A_ w);
4252 4729
4253 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4730 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4272 4749
4273 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
4274} 4751}
4275 4752
4276void 4753void
4277ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4754ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4278{ 4755{
4279 clear_pending (EV_A_ (W)w); 4756 clear_pending (EV_A_ (W)w);
4280 if (expect_false (!ev_is_active (w))) 4757 if (ecb_expect_false (!ev_is_active (w)))
4281 return; 4758 return;
4282 4759
4283 EV_FREQUENT_CHECK; 4760 EV_FREQUENT_CHECK;
4284 4761
4285#if EV_USE_INOTIFY 4762#if EV_USE_INOTIFY
… …
4298} 4775}
4299#endif 4776#endif
4300 4777
4301#if EV_IDLE_ENABLE 4778#if EV_IDLE_ENABLE
4302void 4779void
4303ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4780ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4304{ 4781{
4305 if (expect_false (ev_is_active (w))) 4782 if (ecb_expect_false (ev_is_active (w)))
4306 return; 4783 return;
4307 4784
4308 pri_adjust (EV_A_ (W)w); 4785 pri_adjust (EV_A_ (W)w);
4309 4786
4310 EV_FREQUENT_CHECK; 4787 EV_FREQUENT_CHECK;
… …
4313 int active = ++idlecnt [ABSPRI (w)]; 4790 int active = ++idlecnt [ABSPRI (w)];
4314 4791
4315 ++idleall; 4792 ++idleall;
4316 ev_start (EV_A_ (W)w, active); 4793 ev_start (EV_A_ (W)w, active);
4317 4794
4318 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4795 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4319 idles [ABSPRI (w)][active - 1] = w; 4796 idles [ABSPRI (w)][active - 1] = w;
4320 } 4797 }
4321 4798
4322 EV_FREQUENT_CHECK; 4799 EV_FREQUENT_CHECK;
4323} 4800}
4324 4801
4325void 4802void
4326ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4803ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4327{ 4804{
4328 clear_pending (EV_A_ (W)w); 4805 clear_pending (EV_A_ (W)w);
4329 if (expect_false (!ev_is_active (w))) 4806 if (ecb_expect_false (!ev_is_active (w)))
4330 return; 4807 return;
4331 4808
4332 EV_FREQUENT_CHECK; 4809 EV_FREQUENT_CHECK;
4333 4810
4334 { 4811 {
… …
4345} 4822}
4346#endif 4823#endif
4347 4824
4348#if EV_PREPARE_ENABLE 4825#if EV_PREPARE_ENABLE
4349void 4826void
4350ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4827ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4351{ 4828{
4352 if (expect_false (ev_is_active (w))) 4829 if (ecb_expect_false (ev_is_active (w)))
4353 return; 4830 return;
4354 4831
4355 EV_FREQUENT_CHECK; 4832 EV_FREQUENT_CHECK;
4356 4833
4357 ev_start (EV_A_ (W)w, ++preparecnt); 4834 ev_start (EV_A_ (W)w, ++preparecnt);
4358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4835 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4359 prepares [preparecnt - 1] = w; 4836 prepares [preparecnt - 1] = w;
4360 4837
4361 EV_FREQUENT_CHECK; 4838 EV_FREQUENT_CHECK;
4362} 4839}
4363 4840
4364void 4841void
4365ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4842ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4366{ 4843{
4367 clear_pending (EV_A_ (W)w); 4844 clear_pending (EV_A_ (W)w);
4368 if (expect_false (!ev_is_active (w))) 4845 if (ecb_expect_false (!ev_is_active (w)))
4369 return; 4846 return;
4370 4847
4371 EV_FREQUENT_CHECK; 4848 EV_FREQUENT_CHECK;
4372 4849
4373 { 4850 {
… …
4383} 4860}
4384#endif 4861#endif
4385 4862
4386#if EV_CHECK_ENABLE 4863#if EV_CHECK_ENABLE
4387void 4864void
4388ev_check_start (EV_P_ ev_check *w) EV_THROW 4865ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4389{ 4866{
4390 if (expect_false (ev_is_active (w))) 4867 if (ecb_expect_false (ev_is_active (w)))
4391 return; 4868 return;
4392 4869
4393 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
4394 4871
4395 ev_start (EV_A_ (W)w, ++checkcnt); 4872 ev_start (EV_A_ (W)w, ++checkcnt);
4396 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4873 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4397 checks [checkcnt - 1] = w; 4874 checks [checkcnt - 1] = w;
4398 4875
4399 EV_FREQUENT_CHECK; 4876 EV_FREQUENT_CHECK;
4400} 4877}
4401 4878
4402void 4879void
4403ev_check_stop (EV_P_ ev_check *w) EV_THROW 4880ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4404{ 4881{
4405 clear_pending (EV_A_ (W)w); 4882 clear_pending (EV_A_ (W)w);
4406 if (expect_false (!ev_is_active (w))) 4883 if (ecb_expect_false (!ev_is_active (w)))
4407 return; 4884 return;
4408 4885
4409 EV_FREQUENT_CHECK; 4886 EV_FREQUENT_CHECK;
4410 4887
4411 { 4888 {
… …
4420 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
4421} 4898}
4422#endif 4899#endif
4423 4900
4424#if EV_EMBED_ENABLE 4901#if EV_EMBED_ENABLE
4425void noinline 4902ecb_noinline
4903void
4426ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4904ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4427{ 4905{
4428 ev_run (w->other, EVRUN_NOWAIT); 4906 ev_run (w->other, EVRUN_NOWAIT);
4429} 4907}
4430 4908
4431static void 4909static void
… …
4479 ev_idle_stop (EV_A_ idle); 4957 ev_idle_stop (EV_A_ idle);
4480} 4958}
4481#endif 4959#endif
4482 4960
4483void 4961void
4484ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4962ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4485{ 4963{
4486 if (expect_false (ev_is_active (w))) 4964 if (ecb_expect_false (ev_is_active (w)))
4487 return; 4965 return;
4488 4966
4489 { 4967 {
4490 EV_P = w->other; 4968 EV_P = w->other;
4491 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4969 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4510 4988
4511 EV_FREQUENT_CHECK; 4989 EV_FREQUENT_CHECK;
4512} 4990}
4513 4991
4514void 4992void
4515ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4993ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4516{ 4994{
4517 clear_pending (EV_A_ (W)w); 4995 clear_pending (EV_A_ (W)w);
4518 if (expect_false (!ev_is_active (w))) 4996 if (ecb_expect_false (!ev_is_active (w)))
4519 return; 4997 return;
4520 4998
4521 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
4522 5000
4523 ev_io_stop (EV_A_ &w->io); 5001 ev_io_stop (EV_A_ &w->io);
… …
4530} 5008}
4531#endif 5009#endif
4532 5010
4533#if EV_FORK_ENABLE 5011#if EV_FORK_ENABLE
4534void 5012void
4535ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5013ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4536{ 5014{
4537 if (expect_false (ev_is_active (w))) 5015 if (ecb_expect_false (ev_is_active (w)))
4538 return; 5016 return;
4539 5017
4540 EV_FREQUENT_CHECK; 5018 EV_FREQUENT_CHECK;
4541 5019
4542 ev_start (EV_A_ (W)w, ++forkcnt); 5020 ev_start (EV_A_ (W)w, ++forkcnt);
4543 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5021 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4544 forks [forkcnt - 1] = w; 5022 forks [forkcnt - 1] = w;
4545 5023
4546 EV_FREQUENT_CHECK; 5024 EV_FREQUENT_CHECK;
4547} 5025}
4548 5026
4549void 5027void
4550ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5028ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4551{ 5029{
4552 clear_pending (EV_A_ (W)w); 5030 clear_pending (EV_A_ (W)w);
4553 if (expect_false (!ev_is_active (w))) 5031 if (ecb_expect_false (!ev_is_active (w)))
4554 return; 5032 return;
4555 5033
4556 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4557 5035
4558 { 5036 {
… …
4568} 5046}
4569#endif 5047#endif
4570 5048
4571#if EV_CLEANUP_ENABLE 5049#if EV_CLEANUP_ENABLE
4572void 5050void
4573ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5051ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4574{ 5052{
4575 if (expect_false (ev_is_active (w))) 5053 if (ecb_expect_false (ev_is_active (w)))
4576 return; 5054 return;
4577 5055
4578 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
4579 5057
4580 ev_start (EV_A_ (W)w, ++cleanupcnt); 5058 ev_start (EV_A_ (W)w, ++cleanupcnt);
4581 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5059 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4582 cleanups [cleanupcnt - 1] = w; 5060 cleanups [cleanupcnt - 1] = w;
4583 5061
4584 /* cleanup watchers should never keep a refcount on the loop */ 5062 /* cleanup watchers should never keep a refcount on the loop */
4585 ev_unref (EV_A); 5063 ev_unref (EV_A);
4586 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
4587} 5065}
4588 5066
4589void 5067void
4590ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5068ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4591{ 5069{
4592 clear_pending (EV_A_ (W)w); 5070 clear_pending (EV_A_ (W)w);
4593 if (expect_false (!ev_is_active (w))) 5071 if (ecb_expect_false (!ev_is_active (w)))
4594 return; 5072 return;
4595 5073
4596 EV_FREQUENT_CHECK; 5074 EV_FREQUENT_CHECK;
4597 ev_ref (EV_A); 5075 ev_ref (EV_A);
4598 5076
… …
4609} 5087}
4610#endif 5088#endif
4611 5089
4612#if EV_ASYNC_ENABLE 5090#if EV_ASYNC_ENABLE
4613void 5091void
4614ev_async_start (EV_P_ ev_async *w) EV_THROW 5092ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4615{ 5093{
4616 if (expect_false (ev_is_active (w))) 5094 if (ecb_expect_false (ev_is_active (w)))
4617 return; 5095 return;
4618 5096
4619 w->sent = 0; 5097 w->sent = 0;
4620 5098
4621 evpipe_init (EV_A); 5099 evpipe_init (EV_A);
4622 5100
4623 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4624 5102
4625 ev_start (EV_A_ (W)w, ++asynccnt); 5103 ev_start (EV_A_ (W)w, ++asynccnt);
4626 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5104 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4627 asyncs [asynccnt - 1] = w; 5105 asyncs [asynccnt - 1] = w;
4628 5106
4629 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4630} 5108}
4631 5109
4632void 5110void
4633ev_async_stop (EV_P_ ev_async *w) EV_THROW 5111ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4634{ 5112{
4635 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4636 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4637 return; 5115 return;
4638 5116
4639 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4640 5118
4641 { 5119 {
… …
4649 5127
4650 EV_FREQUENT_CHECK; 5128 EV_FREQUENT_CHECK;
4651} 5129}
4652 5130
4653void 5131void
4654ev_async_send (EV_P_ ev_async *w) EV_THROW 5132ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4655{ 5133{
4656 w->sent = 1; 5134 w->sent = 1;
4657 evpipe_write (EV_A_ &async_pending); 5135 evpipe_write (EV_A_ &async_pending);
4658} 5136}
4659#endif 5137#endif
… …
4696 5174
4697 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5175 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4698} 5176}
4699 5177
4700void 5178void
4701ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5179ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4702{ 5180{
4703 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5181 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4704
4705 if (expect_false (!once))
4706 {
4707 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4708 return;
4709 }
4710 5182
4711 once->cb = cb; 5183 once->cb = cb;
4712 once->arg = arg; 5184 once->arg = arg;
4713 5185
4714 ev_init (&once->io, once_cb_io); 5186 ev_init (&once->io, once_cb_io);
… …
4727} 5199}
4728 5200
4729/*****************************************************************************/ 5201/*****************************************************************************/
4730 5202
4731#if EV_WALK_ENABLE 5203#if EV_WALK_ENABLE
4732void ecb_cold 5204ecb_cold
5205void
4733ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4734{ 5207{
4735 int i, j; 5208 int i, j;
4736 ev_watcher_list *wl, *wn; 5209 ev_watcher_list *wl, *wn;
4737 5210
4738 if (types & (EV_IO | EV_EMBED)) 5211 if (types & (EV_IO | EV_EMBED))

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