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Comparing libev/ev.c (file contents):
Revision 1.433 by root, Tue May 15 13:03:20 2012 UTC vs.
Revision 1.498 by root, Wed Jun 26 00:01:46 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
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
… …
241#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 254#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 256#else
246# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 258#endif
251 259
252#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
254#endif 262#endif
255 263
256#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 267# else
260# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
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
261# endif 278# endif
262#endif 279#endif
263 280
264#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 324
308#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 326# define EV_USE_PORT 0
310#endif 327#endif
311 328
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
312#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 340# else
316# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 380# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 381#endif
357 382
358#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
360#endif 401#endif
361 402
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
… …
373# endif 414# endif
374#endif 415#endif
375 416
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 418
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
387#endif 422#endif
388 423
… …
398 433
399#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 436# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
403# endif 446# endif
404#endif 447#endif
405 448
406#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
407# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
477/* 520/*
478 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
479 * 522 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 525 * All rights reserved.
483 * 526 *
484 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
504 */ 558 */
505 559
506#ifndef ECB_H 560#ifndef ECB_H
507#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
508 565
509#ifdef _WIN32 566#ifdef _WIN32
510 typedef signed char int8_t; 567 typedef signed char int8_t;
511 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
512 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
518 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
522 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
523#else 589#else
524 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
525#endif 608#endif
526 609
527/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so. 613 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have 614 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place. 615 * an issue with that they should have done it right in the first place.
533 */ 616 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
537 #else 619#else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
539 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
540#endif 662#endif
541 663
542/*****************************************************************************/ 664/*****************************************************************************/
543 665
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546 668
547#if ECB_NO_THREADS 669#if ECB_NO_THREADS
548# define ECB_NO_SMP 1 670 #define ECB_NO_SMP 1
549#endif 671#endif
550 672
551#if ECB_NO_THREADS || ECB_NO_SMP 673#if ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
553#endif 684#endif
554 685
555#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
557 #if __i386 || __i386__ 689 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 693 #elif ECB_GCC_AMD64
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__ 713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__ 719 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__ 721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
581 #elif defined __alpha__ 725 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
583 #endif 738 #endif
584 #endif 739 #endif
585#endif 740#endif
586 741
587#ifndef ECB_MEMORY_FENCE 742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32 770 #elif defined _WIN32
598 #include <WinNT.h> 771 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h> 774 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier () 775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
605 #elif __xlC__ 779 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync () 780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
607 #endif 792 #endif
608#endif 793#endif
609 794
610#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
631 816
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif 819#endif
635 820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
636/*****************************************************************************/ 825/*****************************************************************************/
637 826
638#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
639
640#if __cplusplus
641 #define ecb_inline static inline 828 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
644#elif ECB_C99 831#elif ECB_C99
645 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
659 846
660#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
664 852
665#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
666 854
667#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
668 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else 879#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
677#endif 881#endif
678 882
679/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5) 884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
681 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
682#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
683 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
684#endif 890#endif
685 891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
686#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
688#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
691 927
692#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
707/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
710 946
711/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */ 958 /* no popcountll */
720#else 959#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
722 ecb_function_ int 961 ecb_function_ ecb_const int
723 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
724 { 963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
725 int r = 0; 969 int r = 0;
726 970
727 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
728 972
729#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
739 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
741#endif 985#endif
742 986
743 return r; 987 return r;
988#endif
744 } 989 }
745 990
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
747 ecb_function_ int 992 ecb_function_ ecb_const int
748 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
749 { 994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
750 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
752 } 1003 }
753 1004
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
755 ecb_function_ int 1006 ecb_function_ ecb_const int
756 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
757 { 1008 {
758 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101; 1012 x *= 0x01010101;
762 1013
763 return x >> 24; 1014 return x >> 24;
764 } 1015 }
765 1016
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
767 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
768 { 1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
769 int r = 0; 1025 int r = 0;
770 1026
771 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
776 1032
777 return r; 1033 return r;
1034#endif
778 } 1035 }
779 1036
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
781 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
782 { 1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
783 int r = 0; 1045 int r = 0;
784 1046
785 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
786 1048
787 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
788 } 1051 }
789#endif 1052#endif
790 1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
793{ 1061{
794 return ( (x * 0x0802U & 0x22110U) 1062 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796} 1064}
797 1065
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
800{ 1068{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8); 1072 x = ( x >> 8 ) | ( x << 8);
805 1073
806 return x; 1074 return x;
807} 1075}
808 1076
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
811{ 1079{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
818 return x; 1086 return x;
819} 1087}
820 1088
821/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */ 1090/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
824ecb_function_ int 1092ecb_function_ ecb_const int
825ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
826{ 1094{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828} 1096}
829 1097
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
838 1106
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847 1115
848#if ECB_GCC_VERSION(4,3) 1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
850 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x) 1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
852#else 1129#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
854 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
855 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
856 { 1133 {
857 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
858 } 1135 }
859 1136
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
861 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
862 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
863 { 1140 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 } 1142 }
866 1143
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
868 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
869 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
870 { 1147 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 } 1149 }
873#endif 1150#endif
874 1151
875#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
876 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
877#else 1154#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
880 ecb_inline void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
881#endif 1158#endif
882 1159
883/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
885 1162
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
887ecb_inline unsigned char 1164ecb_inline ecb_const uint32_t
888ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
889{ 1166{
890 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
891 return *(unsigned char *)&u; 1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
892} 1189}
893 1190
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
898 1195
899#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else 1198#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif 1200#endif
904 1201
905#if __cplusplus 1202#if ECB_CPP
906 template<typename T> 1203 template<typename T>
907 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
908 { 1205 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 } 1207 }
… …
927 } 1224 }
928#else 1225#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif 1227#endif
931 1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
932#endif 1534#endif
933 1535
934/* ECB.H END */ 1536/* ECB.H END */
935 1537
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
957#define inline_size ecb_inline 1559#define inline_size ecb_inline
958 1560
959#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
960# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
961#else 1563#else
962# define inline_speed static noinline 1564# define inline_speed noinline static
963#endif 1565#endif
964 1566
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966 1568
967#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
969#else 1571#else
970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif 1573#endif
972 1574
973#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
974#define EMPTY2(a,b) /* used to suppress some warnings */
975 1576
976typedef ev_watcher *W; 1577typedef ev_watcher *W;
977typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
978typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
979 1580
… …
1004# include "ev_win32.c" 1605# include "ev_win32.c"
1005#endif 1606#endif
1006 1607
1007/*****************************************************************************/ 1608/*****************************************************************************/
1008 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1009/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
1010 1615
1011#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
1012# include <math.h> 1617# include <math.h>
1013# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
1014#else 1619#else
1015 1620
1016#include <float.h> 1621#include <float.h>
1017 1622
1018/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1019static ev_tstamp noinline 1625static ev_tstamp
1020ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
1021{ 1627{
1022 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1056 1662
1057#ifdef __linux 1663#ifdef __linux
1058# include <sys/utsname.h> 1664# include <sys/utsname.h>
1059#endif 1665#endif
1060 1666
1061static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
1062ev_linux_version (void) 1669ev_linux_version (void)
1063{ 1670{
1064#ifdef __linux 1671#ifdef __linux
1065 unsigned int v = 0; 1672 unsigned int v = 0;
1066 struct utsname buf; 1673 struct utsname buf;
… …
1095} 1702}
1096 1703
1097/*****************************************************************************/ 1704/*****************************************************************************/
1098 1705
1099#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1100static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1101ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1102{ 1710{
1103 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1104} 1712}
1105#endif 1713#endif
1106 1714
1107static void (*syserr_cb)(const char *msg) EV_THROW; 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1108 1716
1109void ecb_cold 1717ecb_cold
1718void
1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1111{ 1720{
1112 syserr_cb = cb; 1721 syserr_cb = cb;
1113} 1722}
1114 1723
1115static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1116ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1117{ 1727{
1118 if (!msg) 1728 if (!msg)
1119 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1120 1730
… …
1133 abort (); 1743 abort ();
1134 } 1744 }
1135} 1745}
1136 1746
1137static void * 1747static void *
1138ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1139{ 1749{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
1143 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1144 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
1145 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
1146 */ 1755 */
1147 1756
1148 if (size) 1757 if (size)
1149 return realloc (ptr, size); 1758 return realloc (ptr, size);
1150 1759
1151 free (ptr); 1760 free (ptr);
1152 return 0; 1761 return 0;
1153#endif
1154} 1762}
1155 1763
1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1157 1765
1158void ecb_cold 1766ecb_cold
1767void
1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1160{ 1769{
1161 alloc = cb; 1770 alloc = cb;
1162} 1771}
1163 1772
1164inline_speed void * 1773inline_speed void *
… …
1191typedef struct 1800typedef struct
1192{ 1801{
1193 WL head; 1802 WL head;
1194 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1195 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
1197 unsigned char unused; 1806 unsigned char unused;
1198#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1199 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1200#endif 1809#endif
1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1281 1890
1282/*****************************************************************************/ 1891/*****************************************************************************/
1283 1892
1284#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1285ev_tstamp 1894ev_tstamp
1286ev_time (void) EV_THROW 1895ev_time (void) EV_NOEXCEPT
1287{ 1896{
1288#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1289 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1290 { 1899 {
1291 struct timespec ts; 1900 struct timespec ts;
… …
1315 return ev_time (); 1924 return ev_time ();
1316} 1925}
1317 1926
1318#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1319ev_tstamp 1928ev_tstamp
1320ev_now (EV_P) EV_THROW 1929ev_now (EV_P) EV_NOEXCEPT
1321{ 1930{
1322 return ev_rt_now; 1931 return ev_rt_now;
1323} 1932}
1324#endif 1933#endif
1325 1934
1326void 1935void
1327ev_sleep (ev_tstamp delay) EV_THROW 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1328{ 1937{
1329 if (delay > 0.) 1938 if (delay > 0.)
1330 { 1939 {
1331#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1332 struct timespec ts; 1941 struct timespec ts;
1333 1942
1334 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1335 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1336#elif defined _WIN32 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
1337 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1338#else 1949#else
1339 struct timeval tv; 1950 struct timeval tv;
1340 1951
1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1372 } 1983 }
1373 1984
1374 return ncur; 1985 return ncur;
1375} 1986}
1376 1987
1377static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1378array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1379{ 1991{
1380 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1381 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1382} 1994}
1383 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1384#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1385 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1386 2000
1387#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1388 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1389 { \ 2003 { \
1390 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1391 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1392 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1393 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1394 } 2008 }
1395 2009
1396#if 0 2010#if 0
1397#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1398 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1407 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1408 2022
1409/*****************************************************************************/ 2023/*****************************************************************************/
1410 2024
1411/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1412static void noinline 2026noinline
2027static void
1413pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1414{ 2029{
1415} 2030}
1416 2031
1417void noinline 2032noinline
2033void
1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1419{ 2035{
1420 W w_ = (W)w; 2036 W w_ = (W)w;
1421 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1422 2038
1423 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1424 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1425 else 2041 else
1426 { 2042 {
1427 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1429 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1430 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1431 } 2047 }
1432 2048
1433 pendingpri = NUMPRI - 1; 2049 pendingpri = NUMPRI - 1;
1434} 2050}
1435 2051
1436inline_speed void 2052inline_speed void
1437feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1438{ 2054{
1439 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1440 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1441} 2057}
1442 2058
1443inline_size void 2059inline_size void
1444feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1484 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1486} 2102}
1487 2103
1488void 2104void
1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1490{ 2106{
1491 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1492 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1493} 2109}
1494 2110
… …
1531 ev_io *w; 2147 ev_io *w;
1532 2148
1533 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1535 2151
1536 anfd->reify = 0; 2152 anfd->reify = 0;
1537 2153
1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1539 { 2155 {
1540 anfd->events = 0; 2156 anfd->events = 0;
1541 2157
… …
1552 2168
1553 fdchangecnt = 0; 2169 fdchangecnt = 0;
1554} 2170}
1555 2171
1556/* something about the given fd changed */ 2172/* something about the given fd changed */
1557inline_size void 2173inline_size
2174void
1558fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1559{ 2176{
1560 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1561 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1562 2179
1563 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1564 { 2181 {
1565 ++fdchangecnt; 2182 ++fdchangecnt;
1566 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1567 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1568 } 2185 }
1569} 2186}
1570 2187
1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1572inline_speed void ecb_cold 2189inline_speed ecb_cold void
1573fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1574{ 2191{
1575 ev_io *w; 2192 ev_io *w;
1576 2193
1577 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1581 } 2198 }
1582} 2199}
1583 2200
1584/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold 2202inline_size ecb_cold int
1586fd_valid (int fd) 2203fd_valid (int fd)
1587{ 2204{
1588#ifdef _WIN32 2205#ifdef _WIN32
1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1590#else 2207#else
1591 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1592#endif 2209#endif
1593} 2210}
1594 2211
1595/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1596static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1597fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1598{ 2216{
1599 int fd; 2217 int fd;
1600 2218
1601 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1603 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1604 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1605} 2223}
1606 2224
1607/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1608static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1609fd_enomem (EV_P) 2228fd_enomem (EV_P)
1610{ 2229{
1611 int fd; 2230 int fd;
1612 2231
1613 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1617 break; 2236 break;
1618 } 2237 }
1619} 2238}
1620 2239
1621/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1622static void noinline 2241noinline
2242static void
1623fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1624{ 2244{
1625 int fd; 2245 int fd;
1626 2246
1627 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1808 2428
1809/*****************************************************************************/ 2429/*****************************************************************************/
1810 2430
1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1812 2432
1813static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1814evpipe_init (EV_P) 2435evpipe_init (EV_P)
1815{ 2436{
1816 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1817 { 2438 {
2439 int fds [2];
2440
1818# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1821 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1822 2446
1823 if (evfd >= 0) 2447 if (fds [1] < 0)
1824 {
1825 evpipe [0] = -1;
1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1827 ev_io_set (&pipe_w, evfd, EV_READ);
1828 }
1829 else
1830# endif 2448# endif
1831 { 2449 {
1832 while (pipe (evpipe)) 2450 while (pipe (fds))
1833 ev_syserr ("(libev) error creating signal/async pipe"); 2451 ev_syserr ("(libev) error creating signal/async pipe");
1834 2452
1835 fd_intern (evpipe [0]); 2453 fd_intern (fds [0]);
1836 fd_intern (evpipe [1]);
1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1838 } 2454 }
1839 2455
2456 evpipe [0] = fds [0];
2457
2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1840 ev_io_start (EV_A_ &pipe_w); 2474 ev_io_start (EV_A_ &pipe_w);
1841 ev_unref (EV_A); /* watcher should not keep loop alive */ 2475 ev_unref (EV_A); /* watcher should not keep loop alive */
1842 } 2476 }
1843} 2477}
1844 2478
… …
1849 2483
1850 if (expect_true (*flag)) 2484 if (expect_true (*flag))
1851 return; 2485 return;
1852 2486
1853 *flag = 1; 2487 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856 2489
1857 pipe_write_skipped = 1; 2490 pipe_write_skipped = 1;
1858 2491
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ 2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860 2493
1861 if (pipe_write_wanted) 2494 if (pipe_write_wanted)
1862 { 2495 {
1863 int old_errno; 2496 int old_errno;
1864 2497
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */ 2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
1866 2500
1867 old_errno = errno; /* save errno because write will clobber it */ 2501 old_errno = errno; /* save errno because write will clobber it */
1868 2502
1869#if EV_USE_EVENTFD 2503#if EV_USE_EVENTFD
1870 if (evfd >= 0) 2504 if (evpipe [0] < 0)
1871 { 2505 {
1872 uint64_t counter = 1; 2506 uint64_t counter = 1;
1873 write (evfd, &counter, sizeof (uint64_t)); 2507 write (evpipe [1], &counter, sizeof (uint64_t));
1874 } 2508 }
1875 else 2509 else
1876#endif 2510#endif
1877 { 2511 {
1878#ifdef _WIN32 2512#ifdef _WIN32
1879 WSABUF buf; 2513 WSABUF buf;
1880 DWORD sent; 2514 DWORD sent;
1881 buf.buf = &buf; 2515 buf.buf = (char *)&buf;
1882 buf.len = 1; 2516 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else 2518#else
1885 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
1886#endif 2520#endif
… …
1898 int i; 2532 int i;
1899 2533
1900 if (revents & EV_READ) 2534 if (revents & EV_READ)
1901 { 2535 {
1902#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1903 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1904 { 2538 {
1905 uint64_t counter; 2539 uint64_t counter;
1906 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1907 } 2541 }
1908 else 2542 else
1909#endif 2543#endif
1910 { 2544 {
1911 char dummy[4]; 2545 char dummy[4];
… …
1929#if EV_SIGNAL_ENABLE 2563#if EV_SIGNAL_ENABLE
1930 if (sig_pending) 2564 if (sig_pending)
1931 { 2565 {
1932 sig_pending = 0; 2566 sig_pending = 0;
1933 2567
1934 ECB_MEMORY_FENCE_RELEASE; 2568 ECB_MEMORY_FENCE;
1935 2569
1936 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1937 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1938 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1939 } 2573 }
… …
1942#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1943 if (async_pending) 2577 if (async_pending)
1944 { 2578 {
1945 async_pending = 0; 2579 async_pending = 0;
1946 2580
1947 ECB_MEMORY_FENCE_RELEASE; 2581 ECB_MEMORY_FENCE;
1948 2582
1949 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1950 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1951 { 2585 {
1952 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1953 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1954 } 2589 }
1955 } 2590 }
1956#endif 2591#endif
1957} 2592}
1958 2593
1959/*****************************************************************************/ 2594/*****************************************************************************/
1960 2595
1961void 2596void
1962ev_feed_signal (int signum) EV_THROW 2597ev_feed_signal (int signum) EV_NOEXCEPT
1963{ 2598{
1964#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
1965 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
1966 2603
1967 if (!EV_A) 2604 if (!EV_A)
1968 return; 2605 return;
1969#endif 2606#endif
1970 2607
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1; 2608 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending); 2609 evpipe_write (EV_A_ &sig_pending);
1976} 2610}
1977 2611
1978static void 2612static void
… …
1983#endif 2617#endif
1984 2618
1985 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
1986} 2620}
1987 2621
1988void noinline 2622noinline
2623void
1989ev_feed_signal_event (EV_P_ int signum) EV_THROW 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1990{ 2625{
1991 WL w; 2626 WL w;
1992 2627
1993 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1994 return; 2629 return;
1995 2630
1996 --signum; 2631 --signum;
1997 2632
1998#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
2002 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
2003 return; 2638 return;
2004#endif 2639#endif
2005 2640
2006 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
2007 2643
2008 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
2009 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2010} 2646}
2011 2647
… …
2102# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
2103#endif 2739#endif
2104#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2105# include "ev_epoll.c" 2741# include "ev_epoll.c"
2106#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2107#if EV_USE_POLL 2746#if EV_USE_POLL
2108# include "ev_poll.c" 2747# include "ev_poll.c"
2109#endif 2748#endif
2110#if EV_USE_SELECT 2749#if EV_USE_SELECT
2111# include "ev_select.c" 2750# include "ev_select.c"
2112#endif 2751#endif
2113 2752
2114int ecb_cold 2753ecb_cold int
2115ev_version_major (void) EV_THROW 2754ev_version_major (void) EV_NOEXCEPT
2116{ 2755{
2117 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2118} 2757}
2119 2758
2120int ecb_cold 2759ecb_cold int
2121ev_version_minor (void) EV_THROW 2760ev_version_minor (void) EV_NOEXCEPT
2122{ 2761{
2123 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2124} 2763}
2125 2764
2126/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
2127int inline_size ecb_cold 2766inline_size ecb_cold int
2128enable_secure (void) 2767enable_secure (void)
2129{ 2768{
2130#ifdef _WIN32 2769#ifdef _WIN32
2131 return 0; 2770 return 0;
2132#else 2771#else
2133 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2134 || getgid () != getegid (); 2773 || getgid () != getegid ();
2135#endif 2774#endif
2136} 2775}
2137 2776
2138unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2139ev_supported_backends (void) EV_THROW 2779ev_supported_backends (void) EV_NOEXCEPT
2140{ 2780{
2141 unsigned int flags = 0; 2781 unsigned int flags = 0;
2142 2782
2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2145 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2146 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2148 2789
2149 return flags; 2790 return flags;
2150} 2791}
2151 2792
2152unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2153ev_recommended_backends (void) EV_THROW 2795ev_recommended_backends (void) EV_NOEXCEPT
2154{ 2796{
2155 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2156 2798
2157#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2158 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2166#endif 2808#endif
2167#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2168 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2169#endif 2811#endif
2170 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2171 return flags; 2818 return flags;
2172} 2819}
2173 2820
2174unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2175ev_embeddable_backends (void) EV_THROW 2823ev_embeddable_backends (void) EV_NOEXCEPT
2176{ 2824{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178 2826
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2182 2830
2183 return flags; 2831 return flags;
2184} 2832}
2185 2833
2186unsigned int 2834unsigned int
2187ev_backend (EV_P) EV_THROW 2835ev_backend (EV_P) EV_NOEXCEPT
2188{ 2836{
2189 return backend; 2837 return backend;
2190} 2838}
2191 2839
2192#if EV_FEATURE_API 2840#if EV_FEATURE_API
2193unsigned int 2841unsigned int
2194ev_iteration (EV_P) EV_THROW 2842ev_iteration (EV_P) EV_NOEXCEPT
2195{ 2843{
2196 return loop_count; 2844 return loop_count;
2197} 2845}
2198 2846
2199unsigned int 2847unsigned int
2200ev_depth (EV_P) EV_THROW 2848ev_depth (EV_P) EV_NOEXCEPT
2201{ 2849{
2202 return loop_depth; 2850 return loop_depth;
2203} 2851}
2204 2852
2205void 2853void
2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2207{ 2855{
2208 io_blocktime = interval; 2856 io_blocktime = interval;
2209} 2857}
2210 2858
2211void 2859void
2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2213{ 2861{
2214 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2215} 2863}
2216 2864
2217void 2865void
2218ev_set_userdata (EV_P_ void *data) EV_THROW 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2219{ 2867{
2220 userdata = data; 2868 userdata = data;
2221} 2869}
2222 2870
2223void * 2871void *
2224ev_userdata (EV_P) EV_THROW 2872ev_userdata (EV_P) EV_NOEXCEPT
2225{ 2873{
2226 return userdata; 2874 return userdata;
2227} 2875}
2228 2876
2229void 2877void
2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2231{ 2879{
2232 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2233} 2881}
2234 2882
2235void 2883void
2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2237{ 2885{
2238 release_cb = release; 2886 release_cb = release;
2239 acquire_cb = acquire; 2887 acquire_cb = acquire;
2240} 2888}
2241#endif 2889#endif
2242 2890
2243/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2244static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2245loop_init (EV_P_ unsigned int flags) EV_THROW 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2246{ 2895{
2247 if (!backend) 2896 if (!backend)
2248 { 2897 {
2249 origflags = flags; 2898 origflags = flags;
2250 2899
… …
2295#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
2296 async_pending = 0; 2945 async_pending = 0;
2297#endif 2946#endif
2298 pipe_write_skipped = 0; 2947 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0; 2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2300#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2302#endif 2953#endif
2303#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2306 2957
2307 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2308 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2309 2960
2310#if EV_USE_IOCP 2961#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif 2963#endif
2313#if EV_USE_PORT 2964#if EV_USE_PORT
2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2315#endif 2966#endif
2316#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2318#endif 2972#endif
2319#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2320 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2321#endif 2975#endif
2322#if EV_USE_POLL 2976#if EV_USE_POLL
2323 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2324#endif 2978#endif
2325#if EV_USE_SELECT 2979#if EV_USE_SELECT
2326 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2327#endif 2981#endif
2328 2982
2329 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2330 2984
2331#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2334#endif 2988#endif
2335 } 2989 }
2336} 2990}
2337 2991
2338/* free up a loop structure */ 2992/* free up a loop structure */
2339void ecb_cold 2993ecb_cold
2994void
2340ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2341{ 2996{
2342 int i; 2997 int i;
2343 2998
2344#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2367 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
2368 { 3023 {
2369 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
2370 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
2371 3026
2372#if EV_USE_EVENTFD
2373 if (evfd >= 0)
2374 close (evfd);
2375#endif
2376
2377 if (evpipe [0] >= 0)
2378 {
2379 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2380 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2381 }
2382 } 3029 }
2383 3030
2384#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
2385 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
2386 close (sigfd); 3033 close (sigfd);
… …
2393 3040
2394 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2395 close (backend_fd); 3042 close (backend_fd);
2396 3043
2397#if EV_USE_IOCP 3044#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif 3046#endif
2400#if EV_USE_PORT 3047#if EV_USE_PORT
2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2402#endif 3049#endif
2403#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2405#endif 3055#endif
2406#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2407 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2408#endif 3058#endif
2409#if EV_USE_POLL 3059#if EV_USE_POLL
2410 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2411#endif 3061#endif
2412#if EV_USE_SELECT 3062#if EV_USE_SELECT
2413 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2414#endif 3064#endif
2415 3065
2416 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2417 { 3067 {
2418 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2460 3110
2461inline_size void 3111inline_size void
2462loop_fork (EV_P) 3112loop_fork (EV_P)
2463{ 3113{
2464#if EV_USE_PORT 3114#if EV_USE_PORT
2465 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2466#endif 3116#endif
2467#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2468 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2469#endif 3122#endif
2470#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2471 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2472#endif 3125#endif
2473#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2474 infy_fork (EV_A); 3127 infy_fork (EV_A);
2475#endif 3128#endif
2476 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2477 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2478 { 3132 {
2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2480 3134
2481 ev_ref (EV_A); 3135 ev_ref (EV_A);
2482 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
2483 3137
2484#if EV_USE_EVENTFD
2485 if (evfd >= 0)
2486 close (evfd);
2487#endif
2488
2489 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
2490 {
2491 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
2492 EV_WIN32_CLOSE_FD (evpipe [1]);
2493 }
2494 3140
2495#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2496 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
2497 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
2498 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2499#endif
2500 } 3144 }
3145#endif
2501 3146
2502 postfork = 0; 3147 postfork = 0;
2503} 3148}
2504 3149
2505#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2506 3151
3152ecb_cold
2507struct ev_loop * ecb_cold 3153struct ev_loop *
2508ev_loop_new (unsigned int flags) EV_THROW 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2509{ 3155{
2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2511 3157
2512 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2513 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2520} 3166}
2521 3167
2522#endif /* multiplicity */ 3168#endif /* multiplicity */
2523 3169
2524#if EV_VERIFY 3170#if EV_VERIFY
2525static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2526verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2527{ 3174{
2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2529 3176
2530 if (w->pending) 3177 if (w->pending)
2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2532} 3179}
2533 3180
2534static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2535verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2536{ 3184{
2537 int i; 3185 int i;
2538 3186
2539 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2544 3192
2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2546 } 3194 }
2547} 3195}
2548 3196
2549static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2550array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2551{ 3200{
2552 while (cnt--) 3201 while (cnt--)
2553 { 3202 {
2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2557} 3206}
2558#endif 3207#endif
2559 3208
2560#if EV_FEATURE_API 3209#if EV_FEATURE_API
2561void ecb_cold 3210void ecb_cold
2562ev_verify (EV_P) EV_THROW 3211ev_verify (EV_P) EV_NOEXCEPT
2563{ 3212{
2564#if EV_VERIFY 3213#if EV_VERIFY
2565 int i; 3214 int i;
2566 WL w, w2; 3215 WL w, w2;
2567 3216
… …
2643#endif 3292#endif
2644} 3293}
2645#endif 3294#endif
2646 3295
2647#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2648struct ev_loop * ecb_cold 3298struct ev_loop *
2649#else 3299#else
2650int 3300int
2651#endif 3301#endif
2652ev_default_loop (unsigned int flags) EV_THROW 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2653{ 3303{
2654 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2655 { 3305 {
2656#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2657 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2676 3326
2677 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2678} 3328}
2679 3329
2680void 3330void
2681ev_loop_fork (EV_P) EV_THROW 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2682{ 3332{
2683 postfork = 1; /* must be in line with ev_default_fork */ 3333 postfork = 1;
2684} 3334}
2685 3335
2686/*****************************************************************************/ 3336/*****************************************************************************/
2687 3337
2688void 3338void
… …
2690{ 3340{
2691 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2692} 3342}
2693 3343
2694unsigned int 3344unsigned int
2695ev_pending_count (EV_P) EV_THROW 3345ev_pending_count (EV_P) EV_NOEXCEPT
2696{ 3346{
2697 int pri; 3347 int pri;
2698 unsigned int count = 0; 3348 unsigned int count = 0;
2699 3349
2700 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2701 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2702 3352
2703 return count; 3353 return count;
2704} 3354}
2705 3355
2706void noinline 3356noinline
3357void
2707ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2708{ 3359{
2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3360 pendingpri = NUMPRI;
3361
3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2710 while (pendingcnt [pendingpri]) 3367 while (pendingcnt [pendingpri])
2711 { 3368 {
2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2713 3370
2714 p->w->pending = 0; 3371 p->w->pending = 0;
2715 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2716 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2717 } 3374 }
3375 }
3376 while (pendingpri);
2718} 3377}
2719 3378
2720#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2721/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2722/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2780 } 3439 }
2781} 3440}
2782 3441
2783#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2784 3443
2785static void noinline 3444noinline
3445static void
2786periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2787{ 3447{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790 3450
… …
2812{ 3472{
2813 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2814 3474
2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2816 { 3476 {
2817 int feed_count = 0;
2818
2819 do 3477 do
2820 { 3478 {
2821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2822 3480
2823 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2850 } 3508 }
2851} 3509}
2852 3510
2853/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2854/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2855static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2856periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2857{ 3516{
2858 int i; 3517 int i;
2859 3518
2860 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2873 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2874} 3533}
2875#endif 3534#endif
2876 3535
2877/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2878static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2879timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2880{ 3540{
2881 int i; 3541 int i;
2882 3542
2883 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
3082 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084 3744
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086 3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
3087 if (pipe_write_skipped) 3748 if (pipe_write_skipped)
3088 { 3749 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 } 3752 }
… …
3129 3790
3130 return activecnt; 3791 return activecnt;
3131} 3792}
3132 3793
3133void 3794void
3134ev_break (EV_P_ int how) EV_THROW 3795ev_break (EV_P_ int how) EV_NOEXCEPT
3135{ 3796{
3136 loop_done = how; 3797 loop_done = how;
3137} 3798}
3138 3799
3139void 3800void
3140ev_ref (EV_P) EV_THROW 3801ev_ref (EV_P) EV_NOEXCEPT
3141{ 3802{
3142 ++activecnt; 3803 ++activecnt;
3143} 3804}
3144 3805
3145void 3806void
3146ev_unref (EV_P) EV_THROW 3807ev_unref (EV_P) EV_NOEXCEPT
3147{ 3808{
3148 --activecnt; 3809 --activecnt;
3149} 3810}
3150 3811
3151void 3812void
3152ev_now_update (EV_P) EV_THROW 3813ev_now_update (EV_P) EV_NOEXCEPT
3153{ 3814{
3154 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
3155} 3816}
3156 3817
3157void 3818void
3158ev_suspend (EV_P) EV_THROW 3819ev_suspend (EV_P) EV_NOEXCEPT
3159{ 3820{
3160 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3161} 3822}
3162 3823
3163void 3824void
3164ev_resume (EV_P) EV_THROW 3825ev_resume (EV_P) EV_NOEXCEPT
3165{ 3826{
3166 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
3167 3828
3168 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
3169 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3208 w->pending = 0; 3869 w->pending = 0;
3209 } 3870 }
3210} 3871}
3211 3872
3212int 3873int
3213ev_clear_pending (EV_P_ void *w) EV_THROW 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3214{ 3875{
3215 W w_ = (W)w; 3876 W w_ = (W)w;
3216 int pending = w_->pending; 3877 int pending = w_->pending;
3217 3878
3218 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
3250 w->active = 0; 3911 w->active = 0;
3251} 3912}
3252 3913
3253/*****************************************************************************/ 3914/*****************************************************************************/
3254 3915
3255void noinline 3916noinline
3917void
3256ev_io_start (EV_P_ ev_io *w) EV_THROW 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3257{ 3919{
3258 int fd = w->fd; 3920 int fd = w->fd;
3259 3921
3260 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3261 return; 3923 return;
3262 3924
3263 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3264 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3265 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
3266 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
3267 3932
3268 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3270 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
3271 3936
3272 /* common bug, apparently */ 3937 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274 3939
… …
3276 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
3277 3942
3278 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
3279} 3944}
3280 3945
3281void noinline 3946noinline
3947void
3282ev_io_stop (EV_P_ ev_io *w) EV_THROW 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3283{ 3949{
3284 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3285 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3286 return; 3952 return;
3287 3953
3288 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3954 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3289 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
3290 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3291 3960
3292 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
3293 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
3294 3963
3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3296 3965
3297 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3298} 3967}
3299 3968
3300void noinline 3969noinline
3970void
3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3302{ 3972{
3303 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3304 return; 3974 return;
3305 3975
3306 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
3309 3979
3310 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
3311 3981
3312 ++timercnt; 3982 ++timercnt;
3313 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3314 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3315 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
3316 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
3317 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
3318 3988
3319 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
3320 3990
3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3991 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3322} 3992}
3323 3993
3324void noinline 3994noinline
3995void
3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3326{ 3997{
3327 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
3329 return; 4000 return;
3330 4001
… …
3349 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
3350 4021
3351 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
3352} 4023}
3353 4024
3354void noinline 4025noinline
4026void
3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3356{ 4028{
3357 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
3358 4030
3359 clear_pending (EV_A_ (W)w); 4031 clear_pending (EV_A_ (W)w);
3360 4032
… …
3377 4049
3378 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3379} 4051}
3380 4052
3381ev_tstamp 4053ev_tstamp
3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4054ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3383{ 4055{
3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4056 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3385} 4057}
3386 4058
3387#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
3388void noinline 4060noinline
4061void
3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3390{ 4063{
3391 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
3392 return; 4065 return;
3393 4066
3394 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
… …
3403 4076
3404 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
3405 4078
3406 ++periodiccnt; 4079 ++periodiccnt;
3407 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3408 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3409 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3410 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
3411 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
3412 4085
3413 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3414 4087
3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4088 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3416} 4089}
3417 4090
3418void noinline 4091noinline
4092void
3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3420{ 4094{
3421 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3422 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
3423 return; 4097 return;
3424 4098
… …
3441 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
3442 4116
3443 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
3444} 4118}
3445 4119
3446void noinline 4120noinline
4121void
3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3448{ 4123{
3449 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
3450 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
3451 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
3452} 4127}
… …
3456# define SA_RESTART 0 4131# define SA_RESTART 0
3457#endif 4132#endif
3458 4133
3459#if EV_SIGNAL_ENABLE 4134#if EV_SIGNAL_ENABLE
3460 4135
3461void noinline 4136noinline
4137void
3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3463{ 4139{
3464 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3465 return; 4141 return;
3466 4142
3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4143 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3469#if EV_MULTIPLICITY 4145#if EV_MULTIPLICITY
3470 assert (("libev: a signal must not be attached to two different loops", 4146 assert (("libev: a signal must not be attached to two different loops",
3471 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4147 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3472 4148
3473 signals [w->signum - 1].loop = EV_A; 4149 signals [w->signum - 1].loop = EV_A;
4150 ECB_MEMORY_FENCE_RELEASE;
3474#endif 4151#endif
3475 4152
3476 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
3477 4154
3478#if EV_USE_SIGNALFD 4155#if EV_USE_SIGNALFD
… …
3537 } 4214 }
3538 4215
3539 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3540} 4217}
3541 4218
3542void noinline 4219noinline
4220void
3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3544{ 4222{
3545 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3546 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
3547 return; 4225 return;
3548 4226
… …
3579#endif 4257#endif
3580 4258
3581#if EV_CHILD_ENABLE 4259#if EV_CHILD_ENABLE
3582 4260
3583void 4261void
3584ev_child_start (EV_P_ ev_child *w) EV_THROW 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3585{ 4263{
3586#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3588#endif 4266#endif
3589 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
… …
3596 4274
3597 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3598} 4276}
3599 4277
3600void 4278void
3601ev_child_stop (EV_P_ ev_child *w) EV_THROW 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3602{ 4280{
3603 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3604 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3605 return; 4283 return;
3606 4284
… …
3623 4301
3624#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
3625#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3626#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
3627 4305
3628static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4306noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3629 4307
3630#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
3631 4309
3632/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4310/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3633# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4311# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3634 4312
3635static void noinline 4313noinline
4314static void
3636infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
3637{ 4316{
3638 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4317 w->wd = inotify_add_watch (fs_fd, w->path,
4318 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4319 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4320 | IN_DONT_FOLLOW | IN_MASK_ADD);
3639 4321
3640 if (w->wd >= 0) 4322 if (w->wd >= 0)
3641 { 4323 {
3642 struct statfs sfs; 4324 struct statfs sfs;
3643 4325
… …
3647 4329
3648 if (!fs_2625) 4330 if (!fs_2625)
3649 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4331 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3650 else if (!statfs (w->path, &sfs) 4332 else if (!statfs (w->path, &sfs)
3651 && (sfs.f_type == 0x1373 /* devfs */ 4333 && (sfs.f_type == 0x1373 /* devfs */
4334 || sfs.f_type == 0x4006 /* fat */
4335 || sfs.f_type == 0x4d44 /* msdos */
3652 || sfs.f_type == 0xEF53 /* ext2/3 */ 4336 || sfs.f_type == 0xEF53 /* ext2/3 */
4337 || sfs.f_type == 0x72b6 /* jffs2 */
4338 || sfs.f_type == 0x858458f6 /* ramfs */
4339 || sfs.f_type == 0x5346544e /* ntfs */
3653 || sfs.f_type == 0x3153464a /* jfs */ 4340 || sfs.f_type == 0x3153464a /* jfs */
4341 || sfs.f_type == 0x9123683e /* btrfs */
3654 || sfs.f_type == 0x52654973 /* reiser3 */ 4342 || sfs.f_type == 0x52654973 /* reiser3 */
3655 || sfs.f_type == 0x01021994 /* tempfs */ 4343 || sfs.f_type == 0x01021994 /* tmpfs */
3656 || sfs.f_type == 0x58465342 /* xfs */)) 4344 || sfs.f_type == 0x58465342 /* xfs */))
3657 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4345 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3658 else 4346 else
3659 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4347 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3660 } 4348 }
… …
3695 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3696 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
3697 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3698} 4386}
3699 4387
3700static void noinline 4388noinline
4389static void
3701infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
3702{ 4391{
3703 int slot; 4392 int slot;
3704 int wd = w->wd; 4393 int wd = w->wd;
3705 4394
… …
3712 4401
3713 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
3714 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
3715} 4404}
3716 4405
3717static void noinline 4406noinline
4407static void
3718infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3719{ 4409{
3720 if (slot < 0) 4410 if (slot < 0)
3721 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
3722 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3758 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4448 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3759 ofs += sizeof (struct inotify_event) + ev->len; 4449 ofs += sizeof (struct inotify_event) + ev->len;
3760 } 4450 }
3761} 4451}
3762 4452
3763inline_size void ecb_cold 4453inline_size ecb_cold
4454void
3764ev_check_2625 (EV_P) 4455ev_check_2625 (EV_P)
3765{ 4456{
3766 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4458 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3768 */ 4459 */
… …
3858#else 4549#else
3859# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
3860#endif 4551#endif
3861 4552
3862void 4553void
3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3864{ 4555{
3865 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
3866 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
3867 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
3868 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
3869} 4560}
3870 4561
3871static void noinline 4562noinline
4563static void
3872stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3873{ 4565{
3874 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3875 4567
3876 ev_statdata prev = w->attr; 4568 ev_statdata prev = w->attr;
… …
3907 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
3908 } 4600 }
3909} 4601}
3910 4602
3911void 4603void
3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3913{ 4605{
3914 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3915 return; 4607 return;
3916 4608
3917 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
3938 4630
3939 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
3940} 4632}
3941 4633
3942void 4634void
3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3944{ 4636{
3945 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
3946 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
3947 return; 4639 return;
3948 4640
… …
3964} 4656}
3965#endif 4657#endif
3966 4658
3967#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
3968void 4660void
3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3970{ 4662{
3971 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
3972 return; 4664 return;
3973 4665
3974 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
3979 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
3980 4672
3981 ++idleall; 4673 ++idleall;
3982 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
3983 4675
3984 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4676 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3985 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
3986 } 4678 }
3987 4679
3988 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
3989} 4681}
3990 4682
3991void 4683void
3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3993{ 4685{
3994 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
3995 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
3996 return; 4688 return;
3997 4689
… …
4011} 4703}
4012#endif 4704#endif
4013 4705
4014#if EV_PREPARE_ENABLE 4706#if EV_PREPARE_ENABLE
4015void 4707void
4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4017{ 4709{
4018 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
4019 return; 4711 return;
4020 4712
4021 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
4022 4714
4023 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
4024 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4025 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
4026 4718
4027 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4028} 4720}
4029 4721
4030void 4722void
4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4032{ 4724{
4033 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
4034 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
4035 return; 4727 return;
4036 4728
… …
4049} 4741}
4050#endif 4742#endif
4051 4743
4052#if EV_CHECK_ENABLE 4744#if EV_CHECK_ENABLE
4053void 4745void
4054ev_check_start (EV_P_ ev_check *w) EV_THROW 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4055{ 4747{
4056 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
4057 return; 4749 return;
4058 4750
4059 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
4060 4752
4061 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
4062 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4063 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
4064 4756
4065 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
4066} 4758}
4067 4759
4068void 4760void
4069ev_check_stop (EV_P_ ev_check *w) EV_THROW 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4070{ 4762{
4071 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
4072 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
4073 return; 4765 return;
4074 4766
… …
4086 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
4087} 4779}
4088#endif 4780#endif
4089 4781
4090#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
4091void noinline 4783noinline
4784void
4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4093{ 4786{
4094 ev_run (w->other, EVRUN_NOWAIT); 4787 ev_run (w->other, EVRUN_NOWAIT);
4095} 4788}
4096 4789
4097static void 4790static void
… …
4145 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
4146} 4839}
4147#endif 4840#endif
4148 4841
4149void 4842void
4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4151{ 4844{
4152 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
4153 return; 4846 return;
4154 4847
4155 { 4848 {
… …
4176 4869
4177 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
4178} 4871}
4179 4872
4180void 4873void
4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4182{ 4875{
4183 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
4184 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
4185 return; 4878 return;
4186 4879
… …
4196} 4889}
4197#endif 4890#endif
4198 4891
4199#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
4200void 4893void
4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4202{ 4895{
4203 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
4204 return; 4897 return;
4205 4898
4206 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
4207 4900
4208 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
4209 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4210 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
4211 4904
4212 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
4213} 4906}
4214 4907
4215void 4908void
4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4217{ 4910{
4218 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
4219 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
4220 return; 4913 return;
4221 4914
… …
4234} 4927}
4235#endif 4928#endif
4236 4929
4237#if EV_CLEANUP_ENABLE 4930#if EV_CLEANUP_ENABLE
4238void 4931void
4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4240{ 4933{
4241 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
4242 return; 4935 return;
4243 4936
4244 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
4245 4938
4246 ev_start (EV_A_ (W)w, ++cleanupcnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
4247 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4248 cleanups [cleanupcnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
4249 4942
4250 /* cleanup watchers should never keep a refcount on the loop */ 4943 /* cleanup watchers should never keep a refcount on the loop */
4251 ev_unref (EV_A); 4944 ev_unref (EV_A);
4252 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
4253} 4946}
4254 4947
4255void 4948void
4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4257{ 4950{
4258 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
4259 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
4260 return; 4953 return;
4261 4954
… …
4275} 4968}
4276#endif 4969#endif
4277 4970
4278#if EV_ASYNC_ENABLE 4971#if EV_ASYNC_ENABLE
4279void 4972void
4280ev_async_start (EV_P_ ev_async *w) EV_THROW 4973ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4281{ 4974{
4282 if (expect_false (ev_is_active (w))) 4975 if (expect_false (ev_is_active (w)))
4283 return; 4976 return;
4284 4977
4285 w->sent = 0; 4978 w->sent = 0;
… …
4287 evpipe_init (EV_A); 4980 evpipe_init (EV_A);
4288 4981
4289 EV_FREQUENT_CHECK; 4982 EV_FREQUENT_CHECK;
4290 4983
4291 ev_start (EV_A_ (W)w, ++asynccnt); 4984 ev_start (EV_A_ (W)w, ++asynccnt);
4292 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4293 asyncs [asynccnt - 1] = w; 4986 asyncs [asynccnt - 1] = w;
4294 4987
4295 EV_FREQUENT_CHECK; 4988 EV_FREQUENT_CHECK;
4296} 4989}
4297 4990
4298void 4991void
4299ev_async_stop (EV_P_ ev_async *w) EV_THROW 4992ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4300{ 4993{
4301 clear_pending (EV_A_ (W)w); 4994 clear_pending (EV_A_ (W)w);
4302 if (expect_false (!ev_is_active (w))) 4995 if (expect_false (!ev_is_active (w)))
4303 return; 4996 return;
4304 4997
… …
4315 5008
4316 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
4317} 5010}
4318 5011
4319void 5012void
4320ev_async_send (EV_P_ ev_async *w) EV_THROW 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4321{ 5014{
4322 w->sent = 1; 5015 w->sent = 1;
4323 evpipe_write (EV_A_ &async_pending); 5016 evpipe_write (EV_A_ &async_pending);
4324} 5017}
4325#endif 5018#endif
… …
4362 5055
4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4364} 5057}
4365 5058
4366void 5059void
4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4368{ 5061{
4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4370
4371 if (expect_false (!once))
4372 {
4373 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4374 return;
4375 }
4376 5063
4377 once->cb = cb; 5064 once->cb = cb;
4378 once->arg = arg; 5065 once->arg = arg;
4379 5066
4380 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
4393} 5080}
4394 5081
4395/*****************************************************************************/ 5082/*****************************************************************************/
4396 5083
4397#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
4398void ecb_cold 5085ecb_cold
5086void
4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5087ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4400{ 5088{
4401 int i, j; 5089 int i, j;
4402 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
4403 5091
4404 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))

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