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Comparing libev/ev.c (file contents):
Revision 1.424 by root, Tue May 1 22:01:40 2012 UTC vs.
Revision 1.488 by root, Fri Dec 21 06:57:09 2018 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) 2007-2018 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
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
201# include <sys/wait.h> 211# include <sys/wait.h>
202# include <unistd.h> 212# include <unistd.h>
203#else 213#else
204# include <io.h> 214# include <io.h>
205# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
206# include <windows.h> 217# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
209# endif 220# endif
210# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
211#endif 222#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220 223
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
222 225
223/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG 227#if defined EV_NSIG
… …
240#elif defined SIGARRAYSIZE 243#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 245#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 247#else
245# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 249#endif
250 250
251#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
253#endif 253#endif
254 254
255#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 258# else
259# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
260# endif 269# endif
261#endif 270#endif
262 271
263#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
354# define EV_USE_4HEAP EV_FEATURE_DATA 363# define EV_USE_4HEAP EV_FEATURE_DATA
355#endif 364#endif
356 365
357#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
359#endif 384#endif
360 385
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
… …
372# endif 397# endif
373#endif 398#endif
374 399
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 401
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
386#endif 405#endif
387 406
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
412# endif 431# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 432#endif
418 433
419#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 436# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
480/* 495/*
481 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
482 * 497 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 500 * All rights reserved.
486 * 501 *
487 * Redistribution and use in source and binary forms, with or without modifica- 502 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
507 */ 533 */
508 534
509#ifndef ECB_H 535#ifndef ECB_H
510#define ECB_H 536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
511 540
512#ifdef _WIN32 541#ifdef _WIN32
513 typedef signed char int8_t; 542 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
525 #endif 554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
526#else 564#else
527 #include <inttypes.h> 565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
528#endif 583#endif
529 584
530/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 588 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 589 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 590 * an issue with that they should have done it right in the first place.
536 */ 591 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
540 #else 594#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614#define ECB_CPP14 (__cplusplus >= 201402L)
615#define ECB_CPP17 (__cplusplus >= 201703L)
616
617#if ECB_CPP
618 #define ECB_C 0
619 #define ECB_STDC_VERSION 0
620#else
621 #define ECB_C 1
622 #define ECB_STDC_VERSION __STDC_VERSION__
623#endif
624
625#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
626#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
627#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
628
629#if ECB_CPP
630 #define ECB_EXTERN_C extern "C"
631 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
632 #define ECB_EXTERN_C_END }
633#else
634 #define ECB_EXTERN_C extern
635 #define ECB_EXTERN_C_BEG
636 #define ECB_EXTERN_C_END
543#endif 637#endif
544 638
545/*****************************************************************************/ 639/*****************************************************************************/
546 640
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 641/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 642/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 643
550#if ECB_NO_THREADS 644#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 645 #define ECB_NO_SMP 1
552#endif 646#endif
553 647
554#if ECB_NO_THREADS || ECB_NO_SMP 648#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 649 #define ECB_MEMORY_FENCE do { } while (0)
650#endif
651
652/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
653#if __xlC__ && ECB_CPP
654 #include <builtins.h>
655#endif
656
657#if 1400 <= _MSC_VER
658 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 659#endif
557 660
558#ifndef ECB_MEMORY_FENCE 661#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 662 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 663 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 667 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
673 #elif defined __ARM_ARCH_2__ \
674 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
675 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
676 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
677 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
678 || defined __ARM_ARCH_5TEJ__
679 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 687 #elif __aarch64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 693 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 695 #elif defined __mips__
696 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
697 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 699 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
701 #elif defined __hppa__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
704 #elif defined __ia64__
705 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
706 #elif defined __m68k__
707 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
708 #elif defined __m88k__
709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
710 #elif defined __sh__
711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 712 #endif
587 #endif 713 #endif
588#endif 714#endif
589 715
590#ifndef ECB_MEMORY_FENCE 716#ifndef ECB_MEMORY_FENCE
717 #if ECB_GCC_VERSION(4,7)
718 /* see comment below (stdatomic.h) about the C11 memory model. */
719 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
720 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
721 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
722
723 #elif ECB_CLANG_EXTENSION(c_atomic)
724 /* see comment below (stdatomic.h) about the C11 memory model. */
725 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
726 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
727 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
728
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 729 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 730 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 731 #elif _MSC_VER >= 1500 /* VC++ 2008 */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 732 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
734 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 737 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 738 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 739 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 740 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 741 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
609 #define ECB_MEMORY_FENCE __sync () 751 #define ECB_MEMORY_FENCE __sync ()
610 #endif 752 #endif
611#endif 753#endif
612 754
613#ifndef ECB_MEMORY_FENCE 755#ifndef ECB_MEMORY_FENCE
756 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
757 /* we assume that these memory fences work on all variables/all memory accesses, */
758 /* not just C11 atomics and atomic accesses */
759 #include <stdatomic.h>
760 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
761 /* any fence other than seq_cst, which isn't very efficient for us. */
762 /* Why that is, we don't know - either the C11 memory model is quite useless */
763 /* for most usages, or gcc and clang have a bug */
764 /* I *currently* lean towards the latter, and inefficiently implement */
765 /* all three of ecb's fences as a seq_cst fence */
766 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
767 /* for all __atomic_thread_fence's except seq_cst */
768 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
769 #endif
770#endif
771
772#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 773 #if !ECB_AVOID_PTHREADS
615 /* 774 /*
616 * if you get undefined symbol references to pthread_mutex_lock, 775 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement 776 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler 777 * the ECB_MEMORY_FENCE operations for your cpu/compiler
… …
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 795 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 796#endif
638 797
639/*****************************************************************************/ 798/*****************************************************************************/
640 799
641#define ECB_C99 (__STDC_VERSION__ >= 199901L) 800#if ECB_CPP
642
643#if __cplusplus
644 #define ecb_inline static inline 801 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 802#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 803 #define ecb_inline static __inline__
647#elif ECB_C99 804#elif ECB_C99
648 #define ecb_inline static inline 805 #define ecb_inline static inline
… …
662 819
663#define ECB_CONCAT_(a, b) a ## b 820#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 821#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a 822#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 823#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
824#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
667 825
668#define ecb_function_ ecb_inline 826#define ecb_function_ ecb_inline
669 827
670#if ECB_GCC_VERSION(3,1) 828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
671 #define ecb_attribute(attrlist) __attribute__(attrlist) 829 #define ecb_attribute(attrlist) __attribute__ (attrlist)
830#else
831 #define ecb_attribute(attrlist)
832#endif
833
834#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr) 835 #define ecb_is_constant(expr) __builtin_constant_p (expr)
836#else
837 /* possible C11 impl for integral types
838 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
839 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
840
841 #define ecb_is_constant(expr) 0
842#endif
843
844#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 845 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
846#else
847 #define ecb_expect(expr,value) (expr)
848#endif
849
850#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 851 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else 852#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality) 853 #define ecb_prefetch(addr,rw,locality)
680#endif 854#endif
681 855
682/* no emulation for ecb_decltype */ 856/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5) 857#if ECB_CPP11
858 // older implementations might have problems with decltype(x)::type, work around it
859 template<class T> struct ecb_decltype_t { typedef T type; };
684 #define ecb_decltype(x) __decltype(x) 860 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
685#elif ECB_GCC_VERSION(3,0) 861#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
686 #define ecb_decltype(x) __typeof(x) 862 #define ecb_decltype(x) __typeof__ (x)
687#endif 863#endif
688 864
865#if _MSC_VER >= 1300
866 #define ecb_deprecated __declspec (deprecated)
867#else
868 #define ecb_deprecated ecb_attribute ((__deprecated__))
869#endif
870
871#if _MSC_VER >= 1500
872 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
873#elif ECB_GCC_VERSION(4,5)
874 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
875#else
876 #define ecb_deprecated_message(msg) ecb_deprecated
877#endif
878
879#if _MSC_VER >= 1400
880 #define ecb_noinline __declspec (noinline)
881#else
689#define ecb_noinline ecb_attribute ((__noinline__)) 882 #define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__)) 883#endif
884
691#define ecb_unused ecb_attribute ((__unused__)) 885#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 886#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 887#define ecb_pure ecb_attribute ((__pure__))
888
889#if ECB_C11 || __IBMC_NORETURN
890 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
891 #define ecb_noreturn _Noreturn
892#elif ECB_CPP11
893 #define ecb_noreturn [[noreturn]]
894#elif _MSC_VER >= 1200
895 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
896 #define ecb_noreturn __declspec (noreturn)
897#else
898 #define ecb_noreturn ecb_attribute ((__noreturn__))
899#endif
694 900
695#if ECB_GCC_VERSION(4,3) 901#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 902 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 903 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 904 #define ecb_cold ecb_attribute ((__cold__))
… …
710/* for compatibility to the rest of the world */ 916/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr) 917#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr) 918#define ecb_unlikely(expr) ecb_expect_false (expr)
713 919
714/* count trailing zero bits and count # of one bits */ 920/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4) 921#if ECB_GCC_VERSION(3,4) \
922 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
923 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
924 && ECB_CLANG_BUILTIN(__builtin_popcount))
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 925 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 926 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 927 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x) 928 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x) 929 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x) 930 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */ 931 /* no popcountll */
723#else 932#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
725 ecb_function_ int 934 ecb_function_ ecb_const int
726 ecb_ctz32 (uint32_t x) 935 ecb_ctz32 (uint32_t x)
727 { 936 {
937#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
938 unsigned long r;
939 _BitScanForward (&r, x);
940 return (int)r;
941#else
728 int r = 0; 942 int r = 0;
729 943
730 x &= ~x + 1; /* this isolates the lowest bit */ 944 x &= ~x + 1; /* this isolates the lowest bit */
731 945
732#if ECB_branchless_on_i386 946#if ECB_branchless_on_i386
… …
742 if (x & 0xff00ff00) r += 8; 956 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16; 957 if (x & 0xffff0000) r += 16;
744#endif 958#endif
745 959
746 return r; 960 return r;
961#endif
747 } 962 }
748 963
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
750 ecb_function_ int 965 ecb_function_ ecb_const int
751 ecb_ctz64 (uint64_t x) 966 ecb_ctz64 (uint64_t x)
752 { 967 {
968#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
969 unsigned long r;
970 _BitScanForward64 (&r, x);
971 return (int)r;
972#else
753 int shift = x & 0xffffffffU ? 0 : 32; 973 int shift = x & 0xffffffff ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift; 974 return ecb_ctz32 (x >> shift) + shift;
975#endif
755 } 976 }
756 977
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
758 ecb_function_ int 979 ecb_function_ ecb_const int
759 ecb_popcount32 (uint32_t x) 980 ecb_popcount32 (uint32_t x)
760 { 981 {
761 x -= (x >> 1) & 0x55555555; 982 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 983 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f; 984 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101; 985 x *= 0x01010101;
765 986
766 return x >> 24; 987 return x >> 24;
767 } 988 }
768 989
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
770 ecb_function_ int ecb_ld32 (uint32_t x) 991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
771 { 992 {
993#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanReverse (&r, x);
996 return (int)r;
997#else
772 int r = 0; 998 int r = 0;
773 999
774 if (x >> 16) { x >>= 16; r += 16; } 1000 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; } 1001 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; } 1002 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; } 1003 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; } 1004 if (x >> 1) { r += 1; }
779 1005
780 return r; 1006 return r;
1007#endif
781 } 1008 }
782 1009
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
784 ecb_function_ int ecb_ld64 (uint64_t x) 1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
785 { 1012 {
1013#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1014 unsigned long r;
1015 _BitScanReverse64 (&r, x);
1016 return (int)r;
1017#else
786 int r = 0; 1018 int r = 0;
787 1019
788 if (x >> 32) { x >>= 32; r += 32; } 1020 if (x >> 32) { x >>= 32; r += 32; }
789 1021
790 return r + ecb_ld32 (x); 1022 return r + ecb_ld32 (x);
1023#endif
791 } 1024 }
792#endif 1025#endif
793 1026
1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1028ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1029ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1030ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1031
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1032ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1033ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
796{ 1034{
797 return ( (x * 0x0802U & 0x22110U) 1035 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1036 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799} 1037}
800 1038
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1039ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1040ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
803{ 1041{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1042 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1043 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1044 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8); 1045 x = ( x >> 8 ) | ( x << 8);
808 1046
809 return x; 1047 return x;
810} 1048}
811 1049
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1050ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1051ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
814{ 1052{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1053 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1054 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1055 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1056 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
821 return x; 1059 return x;
822} 1060}
823 1061
824/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1062/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */ 1063/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1064ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
827ecb_function_ int 1065ecb_function_ ecb_const int
828ecb_popcount64 (uint64_t x) 1066ecb_popcount64 (uint64_t x)
829{ 1067{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1068 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831} 1069}
832 1070
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1076ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1077ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1078ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
841 1079
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1080ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1081ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1082ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1083ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1084ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1085ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1086ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1087ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850 1088
851#if ECB_GCC_VERSION(4,3) 1089#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1090 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1091 #define ecb_bswap16(x) __builtin_bswap16 (x)
1092 #else
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1093 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1094 #endif
853 #define ecb_bswap32(x) __builtin_bswap32 (x) 1095 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x) 1096 #define ecb_bswap64(x) __builtin_bswap64 (x)
1097#elif _MSC_VER
1098 #include <stdlib.h>
1099 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1100 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1101 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
855#else 1102#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1103 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
857 ecb_function_ uint16_t 1104 ecb_function_ ecb_const uint16_t
858 ecb_bswap16 (uint16_t x) 1105 ecb_bswap16 (uint16_t x)
859 { 1106 {
860 return ecb_rotl16 (x, 8); 1107 return ecb_rotl16 (x, 8);
861 } 1108 }
862 1109
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1110 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
864 ecb_function_ uint32_t 1111 ecb_function_ ecb_const uint32_t
865 ecb_bswap32 (uint32_t x) 1112 ecb_bswap32 (uint32_t x)
866 { 1113 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1114 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 } 1115 }
869 1116
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1117 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
871 ecb_function_ uint64_t 1118 ecb_function_ ecb_const uint64_t
872 ecb_bswap64 (uint64_t x) 1119 ecb_bswap64 (uint64_t x)
873 { 1120 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1121 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 } 1122 }
876#endif 1123#endif
877 1124
878#if ECB_GCC_VERSION(4,5) 1125#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
879 #define ecb_unreachable() __builtin_unreachable () 1126 #define ecb_unreachable() __builtin_unreachable ()
880#else 1127#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1128 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1129 ecb_inline ecb_noreturn void ecb_unreachable (void);
883 ecb_inline void ecb_unreachable (void) { } 1130 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
884#endif 1131#endif
885 1132
886/* try to tell the compiler that some condition is definitely true */ 1133/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 1135
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
890ecb_inline unsigned char 1137ecb_inline ecb_const uint32_t
891ecb_byteorder_helper (void) 1138ecb_byteorder_helper (void)
892{ 1139{
893 const uint32_t u = 0x11223344; 1140 /* the union code still generates code under pressure in gcc, */
894 return *(unsigned char *)&u; 1141 /* but less than using pointers, and always seems to */
1142 /* successfully return a constant. */
1143 /* the reason why we have this horrible preprocessor mess */
1144 /* is to avoid it in all cases, at least on common architectures */
1145 /* or when using a recent enough gcc version (>= 4.6) */
1146#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1147 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1148 #define ECB_LITTLE_ENDIAN 1
1149 return 0x44332211;
1150#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1151 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1152 #define ECB_BIG_ENDIAN 1
1153 return 0x11223344;
1154#else
1155 union
1156 {
1157 uint8_t c[4];
1158 uint32_t u;
1159 } u = { 0x11, 0x22, 0x33, 0x44 };
1160 return u.u;
1161#endif
895} 1162}
896 1163
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1165ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1167ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
901 1168
902#if ECB_GCC_VERSION(3,0) || ECB_C99 1169#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1170 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else 1171#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1172 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif 1173#endif
907 1174
908#if __cplusplus 1175#if ECB_CPP
909 template<typename T> 1176 template<typename T>
910 static inline T ecb_div_rd (T val, T div) 1177 static inline T ecb_div_rd (T val, T div)
911 { 1178 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1179 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 } 1180 }
… …
930 } 1197 }
931#else 1198#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1200#endif
934 1201
1202ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1203ecb_function_ ecb_const uint32_t
1204ecb_binary16_to_binary32 (uint32_t x)
1205{
1206 unsigned int s = (x & 0x8000) << (31 - 15);
1207 int e = (x >> 10) & 0x001f;
1208 unsigned int m = x & 0x03ff;
1209
1210 if (ecb_expect_false (e == 31))
1211 /* infinity or NaN */
1212 e = 255 - (127 - 15);
1213 else if (ecb_expect_false (!e))
1214 {
1215 if (ecb_expect_true (!m))
1216 /* zero, handled by code below by forcing e to 0 */
1217 e = 0 - (127 - 15);
1218 else
1219 {
1220 /* subnormal, renormalise */
1221 unsigned int s = 10 - ecb_ld32 (m);
1222
1223 m = (m << s) & 0x3ff; /* mask implicit bit */
1224 e -= s - 1;
1225 }
1226 }
1227
1228 /* e and m now are normalised, or zero, (or inf or nan) */
1229 e += 127 - 15;
1230
1231 return s | (e << 23) | (m << (23 - 10));
1232}
1233
1234ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1235ecb_function_ ecb_const uint16_t
1236ecb_binary32_to_binary16 (uint32_t x)
1237{
1238 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1239 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1240 unsigned int m = x & 0x007fffff;
1241
1242 x &= 0x7fffffff;
1243
1244 /* if it's within range of binary16 normals, use fast path */
1245 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1246 {
1247 /* mantissa round-to-even */
1248 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1249
1250 /* handle overflow */
1251 if (ecb_expect_false (m >= 0x00800000))
1252 {
1253 m >>= 1;
1254 e += 1;
1255 }
1256
1257 return s | (e << 10) | (m >> (23 - 10));
1258 }
1259
1260 /* handle large numbers and infinity */
1261 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1262 return s | 0x7c00;
1263
1264 /* handle zero, subnormals and small numbers */
1265 if (ecb_expect_true (x < 0x38800000))
1266 {
1267 /* zero */
1268 if (ecb_expect_true (!x))
1269 return s;
1270
1271 /* handle subnormals */
1272
1273 /* too small, will be zero */
1274 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1275 return s;
1276
1277 m |= 0x00800000; /* make implicit bit explicit */
1278
1279 /* very tricky - we need to round to the nearest e (+10) bit value */
1280 {
1281 unsigned int bits = 14 - e;
1282 unsigned int half = (1 << (bits - 1)) - 1;
1283 unsigned int even = (m >> bits) & 1;
1284
1285 /* if this overflows, we will end up with a normalised number */
1286 m = (m + half + even) >> bits;
1287 }
1288
1289 return s | m;
1290 }
1291
1292 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1293 m >>= 13;
1294
1295 return s | 0x7c00 | m | !m;
1296}
1297
1298/*******************************************************************************/
1299/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1300
1301/* basically, everything uses "ieee pure-endian" floating point numbers */
1302/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1303#if 0 \
1304 || __i386 || __i386__ \
1305 || ECB_GCC_AMD64 \
1306 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1307 || defined __s390__ || defined __s390x__ \
1308 || defined __mips__ \
1309 || defined __alpha__ \
1310 || defined __hppa__ \
1311 || defined __ia64__ \
1312 || defined __m68k__ \
1313 || defined __m88k__ \
1314 || defined __sh__ \
1315 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1316 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1317 || defined __aarch64__
1318 #define ECB_STDFP 1
1319 #include <string.h> /* for memcpy */
1320#else
1321 #define ECB_STDFP 0
1322#endif
1323
1324#ifndef ECB_NO_LIBM
1325
1326 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1327
1328 /* only the oldest of old doesn't have this one. solaris. */
1329 #ifdef INFINITY
1330 #define ECB_INFINITY INFINITY
1331 #else
1332 #define ECB_INFINITY HUGE_VAL
1333 #endif
1334
1335 #ifdef NAN
1336 #define ECB_NAN NAN
1337 #else
1338 #define ECB_NAN ECB_INFINITY
1339 #endif
1340
1341 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1342 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1343 #define ecb_frexpf(x,e) frexpf ((x), (e))
1344 #else
1345 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1346 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1347 #endif
1348
1349 /* convert a float to ieee single/binary32 */
1350 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1351 ecb_function_ ecb_const uint32_t
1352 ecb_float_to_binary32 (float x)
1353 {
1354 uint32_t r;
1355
1356 #if ECB_STDFP
1357 memcpy (&r, &x, 4);
1358 #else
1359 /* slow emulation, works for anything but -0 */
1360 uint32_t m;
1361 int e;
1362
1363 if (x == 0e0f ) return 0x00000000U;
1364 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1365 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1366 if (x != x ) return 0x7fbfffffU;
1367
1368 m = ecb_frexpf (x, &e) * 0x1000000U;
1369
1370 r = m & 0x80000000U;
1371
1372 if (r)
1373 m = -m;
1374
1375 if (e <= -126)
1376 {
1377 m &= 0xffffffU;
1378 m >>= (-125 - e);
1379 e = -126;
1380 }
1381
1382 r |= (e + 126) << 23;
1383 r |= m & 0x7fffffU;
1384 #endif
1385
1386 return r;
1387 }
1388
1389 /* converts an ieee single/binary32 to a float */
1390 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1391 ecb_function_ ecb_const float
1392 ecb_binary32_to_float (uint32_t x)
1393 {
1394 float r;
1395
1396 #if ECB_STDFP
1397 memcpy (&r, &x, 4);
1398 #else
1399 /* emulation, only works for normals and subnormals and +0 */
1400 int neg = x >> 31;
1401 int e = (x >> 23) & 0xffU;
1402
1403 x &= 0x7fffffU;
1404
1405 if (e)
1406 x |= 0x800000U;
1407 else
1408 e = 1;
1409
1410 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1411 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1412
1413 r = neg ? -r : r;
1414 #endif
1415
1416 return r;
1417 }
1418
1419 /* convert a double to ieee double/binary64 */
1420 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1421 ecb_function_ ecb_const uint64_t
1422 ecb_double_to_binary64 (double x)
1423 {
1424 uint64_t r;
1425
1426 #if ECB_STDFP
1427 memcpy (&r, &x, 8);
1428 #else
1429 /* slow emulation, works for anything but -0 */
1430 uint64_t m;
1431 int e;
1432
1433 if (x == 0e0 ) return 0x0000000000000000U;
1434 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1435 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1436 if (x != x ) return 0X7ff7ffffffffffffU;
1437
1438 m = frexp (x, &e) * 0x20000000000000U;
1439
1440 r = m & 0x8000000000000000;;
1441
1442 if (r)
1443 m = -m;
1444
1445 if (e <= -1022)
1446 {
1447 m &= 0x1fffffffffffffU;
1448 m >>= (-1021 - e);
1449 e = -1022;
1450 }
1451
1452 r |= ((uint64_t)(e + 1022)) << 52;
1453 r |= m & 0xfffffffffffffU;
1454 #endif
1455
1456 return r;
1457 }
1458
1459 /* converts an ieee double/binary64 to a double */
1460 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1461 ecb_function_ ecb_const double
1462 ecb_binary64_to_double (uint64_t x)
1463 {
1464 double r;
1465
1466 #if ECB_STDFP
1467 memcpy (&r, &x, 8);
1468 #else
1469 /* emulation, only works for normals and subnormals and +0 */
1470 int neg = x >> 63;
1471 int e = (x >> 52) & 0x7ffU;
1472
1473 x &= 0xfffffffffffffU;
1474
1475 if (e)
1476 x |= 0x10000000000000U;
1477 else
1478 e = 1;
1479
1480 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1481 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1482
1483 r = neg ? -r : r;
1484 #endif
1485
1486 return r;
1487 }
1488
1489 /* convert a float to ieee half/binary16 */
1490 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1491 ecb_function_ ecb_const uint16_t
1492 ecb_float_to_binary16 (float x)
1493 {
1494 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1495 }
1496
1497 /* convert an ieee half/binary16 to float */
1498 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1499 ecb_function_ ecb_const float
1500 ecb_binary16_to_float (uint16_t x)
1501 {
1502 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1503 }
1504
1505#endif
1506
935#endif 1507#endif
936 1508
937/* ECB.H END */ 1509/* ECB.H END */
938 1510
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1511#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
960#define inline_size ecb_inline 1532#define inline_size ecb_inline
961 1533
962#if EV_FEATURE_CODE 1534#if EV_FEATURE_CODE
963# define inline_speed ecb_inline 1535# define inline_speed ecb_inline
964#else 1536#else
965# define inline_speed static noinline 1537# define inline_speed noinline static
966#endif 1538#endif
967 1539
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969 1541
970#if EV_MINPRI == EV_MAXPRI 1542#if EV_MINPRI == EV_MAXPRI
… …
1017#else 1589#else
1018 1590
1019#include <float.h> 1591#include <float.h>
1020 1592
1021/* a floor() replacement function, should be independent of ev_tstamp type */ 1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1022static ev_tstamp noinline 1595static ev_tstamp
1023ev_floor (ev_tstamp v) 1596ev_floor (ev_tstamp v)
1024{ 1597{
1025 /* the choice of shift factor is not terribly important */ 1598 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1059 1632
1060#ifdef __linux 1633#ifdef __linux
1061# include <sys/utsname.h> 1634# include <sys/utsname.h>
1062#endif 1635#endif
1063 1636
1064static unsigned int noinline ecb_cold 1637noinline ecb_cold
1638static unsigned int
1065ev_linux_version (void) 1639ev_linux_version (void)
1066{ 1640{
1067#ifdef __linux 1641#ifdef __linux
1068 unsigned int v = 0; 1642 unsigned int v = 0;
1069 struct utsname buf; 1643 struct utsname buf;
… …
1098} 1672}
1099 1673
1100/*****************************************************************************/ 1674/*****************************************************************************/
1101 1675
1102#if EV_AVOID_STDIO 1676#if EV_AVOID_STDIO
1103static void noinline ecb_cold 1677noinline ecb_cold
1678static void
1104ev_printerr (const char *msg) 1679ev_printerr (const char *msg)
1105{ 1680{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1681 write (STDERR_FILENO, msg, strlen (msg));
1107} 1682}
1108#endif 1683#endif
1109 1684
1110static void (*syserr_cb)(const char *msg) EV_THROW; 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1111 1686
1112void ecb_cold 1687ecb_cold
1688void
1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1689ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1114{ 1690{
1115 syserr_cb = cb; 1691 syserr_cb = cb;
1116} 1692}
1117 1693
1118static void noinline ecb_cold 1694noinline ecb_cold
1695static void
1119ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
1120{ 1697{
1121 if (!msg) 1698 if (!msg)
1122 msg = "(libev) system error"; 1699 msg = "(libev) system error";
1123 1700
… …
1136 abort (); 1713 abort ();
1137 } 1714 }
1138} 1715}
1139 1716
1140static void * 1717static void *
1141ev_realloc_emul (void *ptr, long size) 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1142{ 1719{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1720 /* some systems, notably openbsd and darwin, fail to properly
1147 * implement realloc (x, 0) (as required by both ansi c-89 and 1721 * implement realloc (x, 0) (as required by both ansi c-89 and
1148 * the single unix specification, so work around them here. 1722 * the single unix specification, so work around them here.
1723 * recently, also (at least) fedora and debian started breaking it,
1724 * despite documenting it otherwise.
1149 */ 1725 */
1150 1726
1151 if (size) 1727 if (size)
1152 return realloc (ptr, size); 1728 return realloc (ptr, size);
1153 1729
1154 free (ptr); 1730 free (ptr);
1155 return 0; 1731 return 0;
1156#endif
1157} 1732}
1158 1733
1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1160 1735
1161void ecb_cold 1736ecb_cold
1737void
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1738ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1163{ 1739{
1164 alloc = cb; 1740 alloc = cb;
1165} 1741}
1166 1742
1167inline_speed void * 1743inline_speed void *
… …
1284 1860
1285/*****************************************************************************/ 1861/*****************************************************************************/
1286 1862
1287#ifndef EV_HAVE_EV_TIME 1863#ifndef EV_HAVE_EV_TIME
1288ev_tstamp 1864ev_tstamp
1289ev_time (void) EV_THROW 1865ev_time (void) EV_NOEXCEPT
1290{ 1866{
1291#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
1292 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
1293 { 1869 {
1294 struct timespec ts; 1870 struct timespec ts;
… …
1318 return ev_time (); 1894 return ev_time ();
1319} 1895}
1320 1896
1321#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1322ev_tstamp 1898ev_tstamp
1323ev_now (EV_P) EV_THROW 1899ev_now (EV_P) EV_NOEXCEPT
1324{ 1900{
1325 return ev_rt_now; 1901 return ev_rt_now;
1326} 1902}
1327#endif 1903#endif
1328 1904
1329void 1905void
1330ev_sleep (ev_tstamp delay) EV_THROW 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1331{ 1907{
1332 if (delay > 0.) 1908 if (delay > 0.)
1333 { 1909 {
1334#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
1335 struct timespec ts; 1911 struct timespec ts;
1336 1912
1337 EV_TS_SET (ts, delay); 1913 EV_TS_SET (ts, delay);
1338 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
1339#elif defined _WIN32 1915#elif defined _WIN32
1916 /* maybe this should round up, as ms is very low resolution */
1917 /* compared to select (µs) or nanosleep (ns) */
1340 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
1341#else 1919#else
1342 struct timeval tv; 1920 struct timeval tv;
1343 1921
1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1922 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1375 } 1953 }
1376 1954
1377 return ncur; 1955 return ncur;
1378} 1956}
1379 1957
1380static void * noinline ecb_cold 1958noinline ecb_cold
1959static void *
1381array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
1382{ 1961{
1383 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
1384 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
1385} 1964}
… …
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1389 1968
1390#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
1391 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
1392 { \ 1971 { \
1393 int ecb_unused ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
1394 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
1395 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
1396 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
1397 } 1976 }
1398 1977
… …
1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1989 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1411 1990
1412/*****************************************************************************/ 1991/*****************************************************************************/
1413 1992
1414/* dummy callback for pending events */ 1993/* dummy callback for pending events */
1415static void noinline 1994noinline
1995static void
1416pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 1997{
1418} 1998}
1419 1999
1420void noinline 2000noinline
2001void
1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1422{ 2003{
1423 W w_ = (W)w; 2004 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
1425 2006
1426 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
… …
1430 w_->pending = ++pendingcnt [pri]; 2011 w_->pending = ++pendingcnt [pri];
1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2012 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432 pendings [pri][w_->pending - 1].w = w_; 2013 pendings [pri][w_->pending - 1].w = w_;
1433 pendings [pri][w_->pending - 1].events = revents; 2014 pendings [pri][w_->pending - 1].events = revents;
1434 } 2015 }
2016
2017 pendingpri = NUMPRI - 1;
1435} 2018}
1436 2019
1437inline_speed void 2020inline_speed void
1438feed_reverse (EV_P_ W w) 2021feed_reverse (EV_P_ W w)
1439{ 2022{
… …
1485 if (expect_true (!anfd->reify)) 2068 if (expect_true (!anfd->reify))
1486 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1487} 2070}
1488 2071
1489void 2072void
1490ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1491{ 2074{
1492 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
1493 fd_event_nocheck (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
1494} 2077}
1495 2078
… …
1553 2136
1554 fdchangecnt = 0; 2137 fdchangecnt = 0;
1555} 2138}
1556 2139
1557/* something about the given fd changed */ 2140/* something about the given fd changed */
1558inline_size void 2141inline_size
2142void
1559fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
1560{ 2144{
1561 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
1562 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
1563 2147
… …
1568 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
1569 } 2153 }
1570} 2154}
1571 2155
1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2156/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1573inline_speed void ecb_cold 2157inline_speed ecb_cold void
1574fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
1575{ 2159{
1576 ev_io *w; 2160 ev_io *w;
1577 2161
1578 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
… …
1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2165 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1582 } 2166 }
1583} 2167}
1584 2168
1585/* check whether the given fd is actually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
1586inline_size int ecb_cold 2170inline_size ecb_cold int
1587fd_valid (int fd) 2171fd_valid (int fd)
1588{ 2172{
1589#ifdef _WIN32 2173#ifdef _WIN32
1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1591#else 2175#else
1592 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
1593#endif 2177#endif
1594} 2178}
1595 2179
1596/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
1597static void noinline ecb_cold 2181noinline ecb_cold
2182static void
1598fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
1599{ 2184{
1600 int fd; 2185 int fd;
1601 2186
1602 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
… …
1604 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
1605 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
1606} 2191}
1607 2192
1608/* called on ENOMEM in select/poll to kill some fds and retry */ 2193/* called on ENOMEM in select/poll to kill some fds and retry */
1609static void noinline ecb_cold 2194noinline ecb_cold
2195static void
1610fd_enomem (EV_P) 2196fd_enomem (EV_P)
1611{ 2197{
1612 int fd; 2198 int fd;
1613 2199
1614 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
… …
1618 break; 2204 break;
1619 } 2205 }
1620} 2206}
1621 2207
1622/* usually called after fork if backend needs to re-arm all fds from scratch */ 2208/* usually called after fork if backend needs to re-arm all fds from scratch */
1623static void noinline 2209noinline
2210static void
1624fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
1625{ 2212{
1626 int fd; 2213 int fd;
1627 2214
1628 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1809 2396
1810/*****************************************************************************/ 2397/*****************************************************************************/
1811 2398
1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1813 2400
1814static void noinline ecb_cold 2401noinline ecb_cold
2402static void
1815evpipe_init (EV_P) 2403evpipe_init (EV_P)
1816{ 2404{
1817 if (!ev_is_active (&pipe_w)) 2405 if (!ev_is_active (&pipe_w))
1818 { 2406 {
2407 int fds [2];
2408
1819# if EV_USE_EVENTFD 2409# if EV_USE_EVENTFD
2410 fds [0] = -1;
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2411 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL) 2412 if (fds [1] < 0 && errno == EINVAL)
1822 evfd = eventfd (0, 0); 2413 fds [1] = eventfd (0, 0);
1823 2414
1824 if (evfd >= 0) 2415 if (fds [1] < 0)
2416# endif
1825 { 2417 {
2418 while (pipe (fds))
2419 ev_syserr ("(libev) error creating signal/async pipe");
2420
2421 fd_intern (fds [0]);
2422 }
2423
1826 evpipe [0] = -1; 2424 evpipe [0] = fds [0];
1827 fd_intern (evfd); /* doing it twice doesn't hurt */ 2425
1828 ev_io_set (&pipe_w, evfd, EV_READ); 2426 if (evpipe [1] < 0)
2427 evpipe [1] = fds [1]; /* first call, set write fd */
2428 else
2429 {
2430 /* on subsequent calls, do not change evpipe [1] */
2431 /* so that evpipe_write can always rely on its value. */
2432 /* this branch does not do anything sensible on windows, */
2433 /* so must not be executed on windows */
2434
2435 dup2 (fds [1], evpipe [1]);
2436 close (fds [1]);
2437 }
2438
2439 fd_intern (evpipe [1]);
2440
2441 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2442 ev_io_start (EV_A_ &pipe_w);
2443 ev_unref (EV_A); /* watcher should not keep loop alive */
2444 }
2445}
2446
2447inline_speed void
2448evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2449{
2450 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2451
2452 if (expect_true (*flag))
2453 return;
2454
2455 *flag = 1;
2456 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2457
2458 pipe_write_skipped = 1;
2459
2460 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2461
2462 if (pipe_write_wanted)
2463 {
2464 int old_errno;
2465
2466 pipe_write_skipped = 0;
2467 ECB_MEMORY_FENCE_RELEASE;
2468
2469 old_errno = errno; /* save errno because write will clobber it */
2470
2471#if EV_USE_EVENTFD
2472 if (evpipe [0] < 0)
2473 {
2474 uint64_t counter = 1;
2475 write (evpipe [1], &counter, sizeof (uint64_t));
1829 } 2476 }
1830 else 2477 else
1831# endif 2478#endif
1832 { 2479 {
1833 while (pipe (evpipe)) 2480#ifdef _WIN32
1834 ev_syserr ("(libev) error creating signal/async pipe"); 2481 WSABUF buf;
1835 2482 DWORD sent;
1836 fd_intern (evpipe [0]); 2483 buf.buf = (char *)&buf;
1837 fd_intern (evpipe [1]); 2484 buf.len = 1;
1838 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2485 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839 } 2486#else
1840
1841 ev_io_start (EV_A_ &pipe_w);
1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1843 }
1844}
1845
1846inline_speed void
1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1848{
1849 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1850
1851 if (expect_true (*flag))
1852 return;
1853
1854 *flag = 1;
1855
1856 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1857
1858 pipe_write_skipped = 1;
1859
1860 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1861
1862 if (pipe_write_wanted)
1863 {
1864 int old_errno;
1865
1866 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1867
1868 old_errno = errno; /* save errno because write will clobber it */
1869
1870#if EV_USE_EVENTFD
1871 if (evfd >= 0)
1872 {
1873 uint64_t counter = 1;
1874 write (evfd, &counter, sizeof (uint64_t));
1875 }
1876 else
1877#endif
1878 {
1879 /* win32 people keep sending patches that change this write() to send() */
1880 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1881 /* so when you think this write should be a send instead, please find out */
1882 /* where your send() is from - it's definitely not the microsoft send, and */
1883 /* tell me. thank you. */
1884 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1885 /* check the ev documentation on how to use this flag */
1886 write (evpipe [1], &(evpipe [1]), 1); 2487 write (evpipe [1], &(evpipe [1]), 1);
2488#endif
1887 } 2489 }
1888 2490
1889 errno = old_errno; 2491 errno = old_errno;
1890 } 2492 }
1891} 2493}
… …
1898 int i; 2500 int i;
1899 2501
1900 if (revents & EV_READ) 2502 if (revents & EV_READ)
1901 { 2503 {
1902#if EV_USE_EVENTFD 2504#if EV_USE_EVENTFD
1903 if (evfd >= 0) 2505 if (evpipe [0] < 0)
1904 { 2506 {
1905 uint64_t counter; 2507 uint64_t counter;
1906 read (evfd, &counter, sizeof (uint64_t)); 2508 read (evpipe [1], &counter, sizeof (uint64_t));
1907 } 2509 }
1908 else 2510 else
1909#endif 2511#endif
1910 { 2512 {
1911 char dummy; 2513 char dummy[4];
1912 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2514#ifdef _WIN32
2515 WSABUF buf;
2516 DWORD recvd;
2517 DWORD flags = 0;
2518 buf.buf = dummy;
2519 buf.len = sizeof (dummy);
2520 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2521#else
1913 read (evpipe [0], &dummy, 1); 2522 read (evpipe [0], &dummy, sizeof (dummy));
2523#endif
1914 } 2524 }
1915 } 2525 }
1916 2526
1917 pipe_write_skipped = 0; 2527 pipe_write_skipped = 0;
1918 2528
… …
1921#if EV_SIGNAL_ENABLE 2531#if EV_SIGNAL_ENABLE
1922 if (sig_pending) 2532 if (sig_pending)
1923 { 2533 {
1924 sig_pending = 0; 2534 sig_pending = 0;
1925 2535
1926 ECB_MEMORY_FENCE_RELEASE; 2536 ECB_MEMORY_FENCE;
1927 2537
1928 for (i = EV_NSIG - 1; i--; ) 2538 for (i = EV_NSIG - 1; i--; )
1929 if (expect_false (signals [i].pending)) 2539 if (expect_false (signals [i].pending))
1930 ev_feed_signal_event (EV_A_ i + 1); 2540 ev_feed_signal_event (EV_A_ i + 1);
1931 } 2541 }
… …
1934#if EV_ASYNC_ENABLE 2544#if EV_ASYNC_ENABLE
1935 if (async_pending) 2545 if (async_pending)
1936 { 2546 {
1937 async_pending = 0; 2547 async_pending = 0;
1938 2548
1939 ECB_MEMORY_FENCE_RELEASE; 2549 ECB_MEMORY_FENCE;
1940 2550
1941 for (i = asynccnt; i--; ) 2551 for (i = asynccnt; i--; )
1942 if (asyncs [i]->sent) 2552 if (asyncs [i]->sent)
1943 { 2553 {
1944 asyncs [i]->sent = 0; 2554 asyncs [i]->sent = 0;
2555 ECB_MEMORY_FENCE_RELEASE;
1945 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2556 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1946 } 2557 }
1947 } 2558 }
1948#endif 2559#endif
1949} 2560}
1950 2561
1951/*****************************************************************************/ 2562/*****************************************************************************/
1952 2563
1953void 2564void
1954ev_feed_signal (int signum) EV_THROW 2565ev_feed_signal (int signum) EV_NOEXCEPT
1955{ 2566{
1956#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
2568 EV_P;
2569 ECB_MEMORY_FENCE_ACQUIRE;
1957 EV_P = signals [signum - 1].loop; 2570 EV_A = signals [signum - 1].loop;
1958 2571
1959 if (!EV_A) 2572 if (!EV_A)
1960 return; 2573 return;
1961#endif 2574#endif
1962 2575
1963 if (!ev_active (&pipe_w))
1964 return;
1965
1966 signals [signum - 1].pending = 1; 2576 signals [signum - 1].pending = 1;
1967 evpipe_write (EV_A_ &sig_pending); 2577 evpipe_write (EV_A_ &sig_pending);
1968} 2578}
1969 2579
1970static void 2580static void
… …
1975#endif 2585#endif
1976 2586
1977 ev_feed_signal (signum); 2587 ev_feed_signal (signum);
1978} 2588}
1979 2589
1980void noinline 2590noinline
2591void
1981ev_feed_signal_event (EV_P_ int signum) EV_THROW 2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1982{ 2593{
1983 WL w; 2594 WL w;
1984 2595
1985 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1986 return; 2597 return;
1987 2598
1988 --signum; 2599 --signum;
1989 2600
1990#if EV_MULTIPLICITY 2601#if EV_MULTIPLICITY
… …
1994 if (expect_false (signals [signum].loop != EV_A)) 2605 if (expect_false (signals [signum].loop != EV_A))
1995 return; 2606 return;
1996#endif 2607#endif
1997 2608
1998 signals [signum].pending = 0; 2609 signals [signum].pending = 0;
2610 ECB_MEMORY_FENCE_RELEASE;
1999 2611
2000 for (w = signals [signum].head; w; w = w->next) 2612 for (w = signals [signum].head; w; w = w->next)
2001 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2613 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2002} 2614}
2003 2615
… …
2101#endif 2713#endif
2102#if EV_USE_SELECT 2714#if EV_USE_SELECT
2103# include "ev_select.c" 2715# include "ev_select.c"
2104#endif 2716#endif
2105 2717
2106int ecb_cold 2718ecb_cold int
2107ev_version_major (void) EV_THROW 2719ev_version_major (void) EV_NOEXCEPT
2108{ 2720{
2109 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
2110} 2722}
2111 2723
2112int ecb_cold 2724ecb_cold int
2113ev_version_minor (void) EV_THROW 2725ev_version_minor (void) EV_NOEXCEPT
2114{ 2726{
2115 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
2116} 2728}
2117 2729
2118/* return true if we are running with elevated privileges and should ignore env variables */ 2730/* return true if we are running with elevated privileges and should ignore env variables */
2119int inline_size ecb_cold 2731inline_size ecb_cold int
2120enable_secure (void) 2732enable_secure (void)
2121{ 2733{
2122#ifdef _WIN32 2734#ifdef _WIN32
2123 return 0; 2735 return 0;
2124#else 2736#else
2125 return getuid () != geteuid () 2737 return getuid () != geteuid ()
2126 || getgid () != getegid (); 2738 || getgid () != getegid ();
2127#endif 2739#endif
2128} 2740}
2129 2741
2130unsigned int ecb_cold 2742ecb_cold
2743unsigned int
2131ev_supported_backends (void) EV_THROW 2744ev_supported_backends (void) EV_NOEXCEPT
2132{ 2745{
2133 unsigned int flags = 0; 2746 unsigned int flags = 0;
2134 2747
2135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2136 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2139 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2140 2753
2141 return flags; 2754 return flags;
2142} 2755}
2143 2756
2144unsigned int ecb_cold 2757ecb_cold
2758unsigned int
2145ev_recommended_backends (void) EV_THROW 2759ev_recommended_backends (void) EV_NOEXCEPT
2146{ 2760{
2147 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
2148 2762
2149#ifndef __NetBSD__ 2763#ifndef __NetBSD__
2150 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
… …
2161#endif 2775#endif
2162 2776
2163 return flags; 2777 return flags;
2164} 2778}
2165 2779
2166unsigned int ecb_cold 2780ecb_cold
2781unsigned int
2167ev_embeddable_backends (void) EV_THROW 2782ev_embeddable_backends (void) EV_NOEXCEPT
2168{ 2783{
2169 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2170 2785
2171 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2786 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2172 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2787 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2174 2789
2175 return flags; 2790 return flags;
2176} 2791}
2177 2792
2178unsigned int 2793unsigned int
2179ev_backend (EV_P) EV_THROW 2794ev_backend (EV_P) EV_NOEXCEPT
2180{ 2795{
2181 return backend; 2796 return backend;
2182} 2797}
2183 2798
2184#if EV_FEATURE_API 2799#if EV_FEATURE_API
2185unsigned int 2800unsigned int
2186ev_iteration (EV_P) EV_THROW 2801ev_iteration (EV_P) EV_NOEXCEPT
2187{ 2802{
2188 return loop_count; 2803 return loop_count;
2189} 2804}
2190 2805
2191unsigned int 2806unsigned int
2192ev_depth (EV_P) EV_THROW 2807ev_depth (EV_P) EV_NOEXCEPT
2193{ 2808{
2194 return loop_depth; 2809 return loop_depth;
2195} 2810}
2196 2811
2197void 2812void
2198ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2199{ 2814{
2200 io_blocktime = interval; 2815 io_blocktime = interval;
2201} 2816}
2202 2817
2203void 2818void
2204ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2205{ 2820{
2206 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
2207} 2822}
2208 2823
2209void 2824void
2210ev_set_userdata (EV_P_ void *data) EV_THROW 2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2211{ 2826{
2212 userdata = data; 2827 userdata = data;
2213} 2828}
2214 2829
2215void * 2830void *
2216ev_userdata (EV_P) EV_THROW 2831ev_userdata (EV_P) EV_NOEXCEPT
2217{ 2832{
2218 return userdata; 2833 return userdata;
2219} 2834}
2220 2835
2221void 2836void
2222ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2837ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2223{ 2838{
2224 invoke_cb = invoke_pending_cb; 2839 invoke_cb = invoke_pending_cb;
2225} 2840}
2226 2841
2227void 2842void
2228ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2843ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2229{ 2844{
2230 release_cb = release; 2845 release_cb = release;
2231 acquire_cb = acquire; 2846 acquire_cb = acquire;
2232} 2847}
2233#endif 2848#endif
2234 2849
2235/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
2236static void noinline ecb_cold 2851noinline ecb_cold
2852static void
2237loop_init (EV_P_ unsigned int flags) EV_THROW 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2238{ 2854{
2239 if (!backend) 2855 if (!backend)
2240 { 2856 {
2241 origflags = flags; 2857 origflags = flags;
2242 2858
… …
2287#if EV_ASYNC_ENABLE 2903#if EV_ASYNC_ENABLE
2288 async_pending = 0; 2904 async_pending = 0;
2289#endif 2905#endif
2290 pipe_write_skipped = 0; 2906 pipe_write_skipped = 0;
2291 pipe_write_wanted = 0; 2907 pipe_write_wanted = 0;
2908 evpipe [0] = -1;
2909 evpipe [1] = -1;
2292#if EV_USE_INOTIFY 2910#if EV_USE_INOTIFY
2293 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2911 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2294#endif 2912#endif
2295#if EV_USE_SIGNALFD 2913#if EV_USE_SIGNALFD
2296 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2914 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2326#endif 2944#endif
2327 } 2945 }
2328} 2946}
2329 2947
2330/* free up a loop structure */ 2948/* free up a loop structure */
2331void ecb_cold 2949ecb_cold
2950void
2332ev_loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
2333{ 2952{
2334 int i; 2953 int i;
2335 2954
2336#if EV_MULTIPLICITY 2955#if EV_MULTIPLICITY
… …
2347 EV_INVOKE_PENDING; 2966 EV_INVOKE_PENDING;
2348 } 2967 }
2349#endif 2968#endif
2350 2969
2351#if EV_CHILD_ENABLE 2970#if EV_CHILD_ENABLE
2352 if (ev_is_active (&childev)) 2971 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2353 { 2972 {
2354 ev_ref (EV_A); /* child watcher */ 2973 ev_ref (EV_A); /* child watcher */
2355 ev_signal_stop (EV_A_ &childev); 2974 ev_signal_stop (EV_A_ &childev);
2356 } 2975 }
2357#endif 2976#endif
… …
2359 if (ev_is_active (&pipe_w)) 2978 if (ev_is_active (&pipe_w))
2360 { 2979 {
2361 /*ev_ref (EV_A);*/ 2980 /*ev_ref (EV_A);*/
2362 /*ev_io_stop (EV_A_ &pipe_w);*/ 2981 /*ev_io_stop (EV_A_ &pipe_w);*/
2363 2982
2364#if EV_USE_EVENTFD
2365 if (evfd >= 0)
2366 close (evfd);
2367#endif
2368
2369 if (evpipe [0] >= 0)
2370 {
2371 EV_WIN32_CLOSE_FD (evpipe [0]); 2983 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2372 EV_WIN32_CLOSE_FD (evpipe [1]); 2984 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2373 }
2374 } 2985 }
2375 2986
2376#if EV_USE_SIGNALFD 2987#if EV_USE_SIGNALFD
2377 if (ev_is_active (&sigfd_w)) 2988 if (ev_is_active (&sigfd_w))
2378 close (sigfd); 2989 close (sigfd);
… …
2464#endif 3075#endif
2465#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
2466 infy_fork (EV_A); 3077 infy_fork (EV_A);
2467#endif 3078#endif
2468 3079
3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2469 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
2470 { 3082 {
2471 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3083 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2472 3084
2473 ev_ref (EV_A); 3085 ev_ref (EV_A);
2474 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
2475 3087
2476#if EV_USE_EVENTFD
2477 if (evfd >= 0)
2478 close (evfd);
2479#endif
2480
2481 if (evpipe [0] >= 0) 3088 if (evpipe [0] >= 0)
2482 {
2483 EV_WIN32_CLOSE_FD (evpipe [0]); 3089 EV_WIN32_CLOSE_FD (evpipe [0]);
2484 EV_WIN32_CLOSE_FD (evpipe [1]);
2485 }
2486 3090
2487#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2488 evpipe_init (EV_A); 3091 evpipe_init (EV_A);
2489 /* now iterate over everything, in case we missed something */ 3092 /* iterate over everything, in case we missed something before */
2490 pipecb (EV_A_ &pipe_w, EV_READ); 3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2491#endif
2492 } 3094 }
3095#endif
2493 3096
2494 postfork = 0; 3097 postfork = 0;
2495} 3098}
2496 3099
2497#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
2498 3101
3102ecb_cold
2499struct ev_loop * ecb_cold 3103struct ev_loop *
2500ev_loop_new (unsigned int flags) EV_THROW 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
2501{ 3105{
2502 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2503 3107
2504 memset (EV_A, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
2505 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
… …
2512} 3116}
2513 3117
2514#endif /* multiplicity */ 3118#endif /* multiplicity */
2515 3119
2516#if EV_VERIFY 3120#if EV_VERIFY
2517static void noinline ecb_cold 3121noinline ecb_cold
3122static void
2518verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
2519{ 3124{
2520 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2521 3126
2522 if (w->pending) 3127 if (w->pending)
2523 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2524} 3129}
2525 3130
2526static void noinline ecb_cold 3131noinline ecb_cold
3132static void
2527verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
2528{ 3134{
2529 int i; 3135 int i;
2530 3136
2531 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2536 3142
2537 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2538 } 3144 }
2539} 3145}
2540 3146
2541static void noinline ecb_cold 3147noinline ecb_cold
3148static void
2542array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
2543{ 3150{
2544 while (cnt--) 3151 while (cnt--)
2545 { 3152 {
2546 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2549} 3156}
2550#endif 3157#endif
2551 3158
2552#if EV_FEATURE_API 3159#if EV_FEATURE_API
2553void ecb_cold 3160void ecb_cold
2554ev_verify (EV_P) EV_THROW 3161ev_verify (EV_P) EV_NOEXCEPT
2555{ 3162{
2556#if EV_VERIFY 3163#if EV_VERIFY
2557 int i; 3164 int i;
2558 WL w; 3165 WL w, w2;
2559 3166
2560 assert (activecnt >= -1); 3167 assert (activecnt >= -1);
2561 3168
2562 assert (fdchangemax >= fdchangecnt); 3169 assert (fdchangemax >= fdchangecnt);
2563 for (i = 0; i < fdchangecnt; ++i) 3170 for (i = 0; i < fdchangecnt; ++i)
2564 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3171 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2565 3172
2566 assert (anfdmax >= 0); 3173 assert (anfdmax >= 0);
2567 for (i = 0; i < anfdmax; ++i) 3174 for (i = 0; i < anfdmax; ++i)
3175 {
3176 int j = 0;
3177
2568 for (w = anfds [i].head; w; w = w->next) 3178 for (w = w2 = anfds [i].head; w; w = w->next)
2569 { 3179 {
2570 verify_watcher (EV_A_ (W)w); 3180 verify_watcher (EV_A_ (W)w);
3181
3182 if (j++ & 1)
3183 {
3184 assert (("libev: io watcher list contains a loop", w != w2));
3185 w2 = w2->next;
3186 }
3187
2571 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3188 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2572 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3189 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2573 } 3190 }
3191 }
2574 3192
2575 assert (timermax >= timercnt); 3193 assert (timermax >= timercnt);
2576 verify_heap (EV_A_ timers, timercnt); 3194 verify_heap (EV_A_ timers, timercnt);
2577 3195
2578#if EV_PERIODIC_ENABLE 3196#if EV_PERIODIC_ENABLE
… …
2624#endif 3242#endif
2625} 3243}
2626#endif 3244#endif
2627 3245
2628#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
2629struct ev_loop * ecb_cold 3248struct ev_loop *
2630#else 3249#else
2631int 3250int
2632#endif 3251#endif
2633ev_default_loop (unsigned int flags) EV_THROW 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
2634{ 3253{
2635 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
2636 { 3255 {
2637#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
2638 EV_P = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2657 3276
2658 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
2659} 3278}
2660 3279
2661void 3280void
2662ev_loop_fork (EV_P) EV_THROW 3281ev_loop_fork (EV_P) EV_NOEXCEPT
2663{ 3282{
2664 postfork = 1; /* must be in line with ev_default_fork */ 3283 postfork = 1;
2665} 3284}
2666 3285
2667/*****************************************************************************/ 3286/*****************************************************************************/
2668 3287
2669void 3288void
… …
2671{ 3290{
2672 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
2673} 3292}
2674 3293
2675unsigned int 3294unsigned int
2676ev_pending_count (EV_P) EV_THROW 3295ev_pending_count (EV_P) EV_NOEXCEPT
2677{ 3296{
2678 int pri; 3297 int pri;
2679 unsigned int count = 0; 3298 unsigned int count = 0;
2680 3299
2681 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
2682 count += pendingcnt [pri]; 3301 count += pendingcnt [pri];
2683 3302
2684 return count; 3303 return count;
2685} 3304}
2686 3305
2687void noinline 3306noinline
3307void
2688ev_invoke_pending (EV_P) 3308ev_invoke_pending (EV_P)
2689{ 3309{
2690 int pri; 3310 pendingpri = NUMPRI;
2691 3311
2692 for (pri = NUMPRI; pri--; ) 3312 do
3313 {
3314 --pendingpri;
3315
3316 /* pendingpri possibly gets modified in the inner loop */
2693 while (pendingcnt [pri]) 3317 while (pendingcnt [pendingpri])
2694 { 3318 {
2695 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2696 3320
2697 p->w->pending = 0; 3321 p->w->pending = 0;
2698 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
2699 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2700 } 3324 }
3325 }
3326 while (pendingpri);
2701} 3327}
2702 3328
2703#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
2704/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
2705/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
… …
2763 } 3389 }
2764} 3390}
2765 3391
2766#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
2767 3393
2768static void noinline 3394noinline
3395static void
2769periodic_recalc (EV_P_ ev_periodic *w) 3396periodic_recalc (EV_P_ ev_periodic *w)
2770{ 3397{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3399 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773 3400
… …
2795{ 3422{
2796 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2797 3424
2798 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3425 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2799 { 3426 {
2800 int feed_count = 0;
2801
2802 do 3427 do
2803 { 3428 {
2804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3429 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2805 3430
2806 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3431 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2833 } 3458 }
2834} 3459}
2835 3460
2836/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
2837/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3462/* TODO: maybe ensure that at least one event happens when jumping forward? */
2838static void noinline ecb_cold 3463noinline ecb_cold
3464static void
2839periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
2840{ 3466{
2841 int i; 3467 int i;
2842 3468
2843 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
… …
2856 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
2857} 3483}
2858#endif 3484#endif
2859 3485
2860/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
2861static void noinline ecb_cold 3487noinline ecb_cold
3488static void
2862timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
2863{ 3490{
2864 int i; 3491 int i;
2865 3492
2866 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
… …
3065 backend_poll (EV_A_ waittime); 3692 backend_poll (EV_A_ waittime);
3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3693 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067 3694
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3695 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069 3696
3697 ECB_MEMORY_FENCE_ACQUIRE;
3070 if (pipe_write_skipped) 3698 if (pipe_write_skipped)
3071 { 3699 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3700 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3701 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 } 3702 }
… …
3112 3740
3113 return activecnt; 3741 return activecnt;
3114} 3742}
3115 3743
3116void 3744void
3117ev_break (EV_P_ int how) EV_THROW 3745ev_break (EV_P_ int how) EV_NOEXCEPT
3118{ 3746{
3119 loop_done = how; 3747 loop_done = how;
3120} 3748}
3121 3749
3122void 3750void
3123ev_ref (EV_P) EV_THROW 3751ev_ref (EV_P) EV_NOEXCEPT
3124{ 3752{
3125 ++activecnt; 3753 ++activecnt;
3126} 3754}
3127 3755
3128void 3756void
3129ev_unref (EV_P) EV_THROW 3757ev_unref (EV_P) EV_NOEXCEPT
3130{ 3758{
3131 --activecnt; 3759 --activecnt;
3132} 3760}
3133 3761
3134void 3762void
3135ev_now_update (EV_P) EV_THROW 3763ev_now_update (EV_P) EV_NOEXCEPT
3136{ 3764{
3137 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
3138} 3766}
3139 3767
3140void 3768void
3141ev_suspend (EV_P) EV_THROW 3769ev_suspend (EV_P) EV_NOEXCEPT
3142{ 3770{
3143 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
3144} 3772}
3145 3773
3146void 3774void
3147ev_resume (EV_P) EV_THROW 3775ev_resume (EV_P) EV_NOEXCEPT
3148{ 3776{
3149 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
3150 3778
3151 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
3152 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3191 w->pending = 0; 3819 w->pending = 0;
3192 } 3820 }
3193} 3821}
3194 3822
3195int 3823int
3196ev_clear_pending (EV_P_ void *w) EV_THROW 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3197{ 3825{
3198 W w_ = (W)w; 3826 W w_ = (W)w;
3199 int pending = w_->pending; 3827 int pending = w_->pending;
3200 3828
3201 if (expect_true (pending)) 3829 if (expect_true (pending))
… …
3233 w->active = 0; 3861 w->active = 0;
3234} 3862}
3235 3863
3236/*****************************************************************************/ 3864/*****************************************************************************/
3237 3865
3238void noinline 3866noinline
3867void
3239ev_io_start (EV_P_ ev_io *w) EV_THROW 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3240{ 3869{
3241 int fd = w->fd; 3870 int fd = w->fd;
3242 3871
3243 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
3244 return; 3873 return;
… …
3250 3879
3251 ev_start (EV_A_ (W)w, 1); 3880 ev_start (EV_A_ (W)w, 1);
3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3881 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3253 wlist_add (&anfds[fd].head, (WL)w); 3882 wlist_add (&anfds[fd].head, (WL)w);
3254 3883
3884 /* common bug, apparently */
3885 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3886
3255 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3887 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3256 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
3257 3889
3258 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
3259} 3891}
3260 3892
3261void noinline 3893noinline
3894void
3262ev_io_stop (EV_P_ ev_io *w) EV_THROW 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3263{ 3896{
3264 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
3266 return; 3899 return;
3267 3900
… …
3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3276 3909
3277 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
3278} 3911}
3279 3912
3280void noinline 3913noinline
3914void
3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3282{ 3916{
3283 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3284 return; 3918 return;
3285 3919
3286 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
… …
3299 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
3300 3934
3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3935 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3302} 3936}
3303 3937
3304void noinline 3938noinline
3939void
3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3306{ 3941{
3307 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
3308 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
3309 return; 3944 return;
3310 3945
… …
3329 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
3330 3965
3331 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3332} 3967}
3333 3968
3334void noinline 3969noinline
3970void
3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3336{ 3972{
3337 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3338 3974
3339 clear_pending (EV_A_ (W)w); 3975 clear_pending (EV_A_ (W)w);
3340 3976
… …
3357 3993
3358 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
3359} 3995}
3360 3996
3361ev_tstamp 3997ev_tstamp
3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3363{ 3999{
3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3365} 4001}
3366 4002
3367#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
3368void noinline 4004noinline
4005void
3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3370{ 4007{
3371 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
3372 return; 4009 return;
3373 4010
3374 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
… …
3393 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3394 4031
3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4032 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3396} 4033}
3397 4034
3398void noinline 4035noinline
4036void
3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3400{ 4038{
3401 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
3403 return; 4041 return;
3404 4042
… …
3421 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
3422 4060
3423 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3424} 4062}
3425 4063
3426void noinline 4064noinline
4065void
3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3428{ 4067{
3429 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
3430 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
3431 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
3432} 4071}
… …
3436# define SA_RESTART 0 4075# define SA_RESTART 0
3437#endif 4076#endif
3438 4077
3439#if EV_SIGNAL_ENABLE 4078#if EV_SIGNAL_ENABLE
3440 4079
3441void noinline 4080noinline
4081void
3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3443{ 4083{
3444 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
3445 return; 4085 return;
3446 4086
3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4087 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3449#if EV_MULTIPLICITY 4089#if EV_MULTIPLICITY
3450 assert (("libev: a signal must not be attached to two different loops", 4090 assert (("libev: a signal must not be attached to two different loops",
3451 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4091 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3452 4092
3453 signals [w->signum - 1].loop = EV_A; 4093 signals [w->signum - 1].loop = EV_A;
4094 ECB_MEMORY_FENCE_RELEASE;
3454#endif 4095#endif
3455 4096
3456 EV_FREQUENT_CHECK; 4097 EV_FREQUENT_CHECK;
3457 4098
3458#if EV_USE_SIGNALFD 4099#if EV_USE_SIGNALFD
… …
3517 } 4158 }
3518 4159
3519 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
3520} 4161}
3521 4162
3522void noinline 4163noinline
4164void
3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3524{ 4166{
3525 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
3526 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
3527 return; 4169 return;
3528 4170
… …
3559#endif 4201#endif
3560 4202
3561#if EV_CHILD_ENABLE 4203#if EV_CHILD_ENABLE
3562 4204
3563void 4205void
3564ev_child_start (EV_P_ ev_child *w) EV_THROW 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3565{ 4207{
3566#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4209 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3568#endif 4210#endif
3569 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
… …
3576 4218
3577 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3578} 4220}
3579 4221
3580void 4222void
3581ev_child_stop (EV_P_ ev_child *w) EV_THROW 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3582{ 4224{
3583 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3584 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3585 return; 4227 return;
3586 4228
… …
3603 4245
3604#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
3605#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3606#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
3607 4249
3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4250noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3609 4251
3610#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
3611 4253
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4254/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3614 4256
3615static void noinline 4257noinline
4258static void
3616infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
3617{ 4260{
3618 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); 4261 w->wd = inotify_add_watch (fs_fd, w->path,
4262 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4263 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4264 | IN_DONT_FOLLOW | IN_MASK_ADD);
3619 4265
3620 if (w->wd >= 0) 4266 if (w->wd >= 0)
3621 { 4267 {
3622 struct statfs sfs; 4268 struct statfs sfs;
3623 4269
… …
3627 4273
3628 if (!fs_2625) 4274 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4275 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs) 4276 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */ 4277 && (sfs.f_type == 0x1373 /* devfs */
4278 || sfs.f_type == 0x4006 /* fat */
4279 || sfs.f_type == 0x4d44 /* msdos */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */ 4280 || sfs.f_type == 0xEF53 /* ext2/3 */
4281 || sfs.f_type == 0x72b6 /* jffs2 */
4282 || sfs.f_type == 0x858458f6 /* ramfs */
4283 || sfs.f_type == 0x5346544e /* ntfs */
3633 || sfs.f_type == 0x3153464a /* jfs */ 4284 || sfs.f_type == 0x3153464a /* jfs */
4285 || sfs.f_type == 0x9123683e /* btrfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */ 4286 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */ 4287 || sfs.f_type == 0x01021994 /* tmpfs */
3636 || sfs.f_type == 0x58465342 /* xfs */)) 4288 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4289 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else 4290 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4291 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3640 } 4292 }
… …
3675 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3676 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
3677 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3678} 4330}
3679 4331
3680static void noinline 4332noinline
4333static void
3681infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
3682{ 4335{
3683 int slot; 4336 int slot;
3684 int wd = w->wd; 4337 int wd = w->wd;
3685 4338
… …
3692 4345
3693 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
3694 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
3695} 4348}
3696 4349
3697static void noinline 4350noinline
4351static void
3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3699{ 4353{
3700 if (slot < 0) 4354 if (slot < 0)
3701 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3738 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len; 4393 ofs += sizeof (struct inotify_event) + ev->len;
3740 } 4394 }
3741} 4395}
3742 4396
3743inline_size void ecb_cold 4397inline_size ecb_cold
4398void
3744ev_check_2625 (EV_P) 4399ev_check_2625 (EV_P)
3745{ 4400{
3746 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4402 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3748 */ 4403 */
… …
3838#else 4493#else
3839# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
3840#endif 4495#endif
3841 4496
3842void 4497void
3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3844{ 4499{
3845 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
3846 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
3847 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
3848 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
3849} 4504}
3850 4505
3851static void noinline 4506noinline
4507static void
3852stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3853{ 4509{
3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3855 4511
3856 ev_statdata prev = w->attr; 4512 ev_statdata prev = w->attr;
… …
3887 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
3888 } 4544 }
3889} 4545}
3890 4546
3891void 4547void
3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3893{ 4549{
3894 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
3895 return; 4551 return;
3896 4552
3897 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
… …
3918 4574
3919 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3920} 4576}
3921 4577
3922void 4578void
3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3924{ 4580{
3925 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3926 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3927 return; 4583 return;
3928 4584
… …
3944} 4600}
3945#endif 4601#endif
3946 4602
3947#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
3948void 4604void
3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3950{ 4606{
3951 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
3952 return; 4608 return;
3953 4609
3954 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
… …
3967 4623
3968 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
3969} 4625}
3970 4626
3971void 4627void
3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3973{ 4629{
3974 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
3975 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
3976 return; 4632 return;
3977 4633
… …
3991} 4647}
3992#endif 4648#endif
3993 4649
3994#if EV_PREPARE_ENABLE 4650#if EV_PREPARE_ENABLE
3995void 4651void
3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3997{ 4653{
3998 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
3999 return; 4655 return;
4000 4656
4001 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
… …
4006 4662
4007 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
4008} 4664}
4009 4665
4010void 4666void
4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4012{ 4668{
4013 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
4014 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
4015 return; 4671 return;
4016 4672
… …
4029} 4685}
4030#endif 4686#endif
4031 4687
4032#if EV_CHECK_ENABLE 4688#if EV_CHECK_ENABLE
4033void 4689void
4034ev_check_start (EV_P_ ev_check *w) EV_THROW 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4035{ 4691{
4036 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
4037 return; 4693 return;
4038 4694
4039 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
… …
4044 4700
4045 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
4046} 4702}
4047 4703
4048void 4704void
4049ev_check_stop (EV_P_ ev_check *w) EV_THROW 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4050{ 4706{
4051 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
4052 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
4053 return; 4709 return;
4054 4710
… …
4066 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
4067} 4723}
4068#endif 4724#endif
4069 4725
4070#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
4071void noinline 4727noinline
4728void
4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4073{ 4730{
4074 ev_run (w->other, EVRUN_NOWAIT); 4731 ev_run (w->other, EVRUN_NOWAIT);
4075} 4732}
4076 4733
4077static void 4734static void
… …
4125 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
4126} 4783}
4127#endif 4784#endif
4128 4785
4129void 4786void
4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4131{ 4788{
4132 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
4133 return; 4790 return;
4134 4791
4135 { 4792 {
… …
4156 4813
4157 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
4158} 4815}
4159 4816
4160void 4817void
4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4162{ 4819{
4163 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
4164 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
4165 return; 4822 return;
4166 4823
… …
4176} 4833}
4177#endif 4834#endif
4178 4835
4179#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
4180void 4837void
4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4182{ 4839{
4183 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
4184 return; 4841 return;
4185 4842
4186 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
… …
4191 4848
4192 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
4193} 4850}
4194 4851
4195void 4852void
4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4197{ 4854{
4198 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
4199 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
4200 return; 4857 return;
4201 4858
… …
4214} 4871}
4215#endif 4872#endif
4216 4873
4217#if EV_CLEANUP_ENABLE 4874#if EV_CLEANUP_ENABLE
4218void 4875void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4220{ 4877{
4221 if (expect_false (ev_is_active (w))) 4878 if (expect_false (ev_is_active (w)))
4222 return; 4879 return;
4223 4880
4224 EV_FREQUENT_CHECK; 4881 EV_FREQUENT_CHECK;
… …
4231 ev_unref (EV_A); 4888 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4233} 4890}
4234 4891
4235void 4892void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4237{ 4894{
4238 clear_pending (EV_A_ (W)w); 4895 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w))) 4896 if (expect_false (!ev_is_active (w)))
4240 return; 4897 return;
4241 4898
… …
4255} 4912}
4256#endif 4913#endif
4257 4914
4258#if EV_ASYNC_ENABLE 4915#if EV_ASYNC_ENABLE
4259void 4916void
4260ev_async_start (EV_P_ ev_async *w) EV_THROW 4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4261{ 4918{
4262 if (expect_false (ev_is_active (w))) 4919 if (expect_false (ev_is_active (w)))
4263 return; 4920 return;
4264 4921
4265 w->sent = 0; 4922 w->sent = 0;
… …
4274 4931
4275 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
4276} 4933}
4277 4934
4278void 4935void
4279ev_async_stop (EV_P_ ev_async *w) EV_THROW 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4280{ 4937{
4281 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
4282 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
4283 return; 4940 return;
4284 4941
… …
4295 4952
4296 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
4297} 4954}
4298 4955
4299void 4956void
4300ev_async_send (EV_P_ ev_async *w) EV_THROW 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4301{ 4958{
4302 w->sent = 1; 4959 w->sent = 1;
4303 evpipe_write (EV_A_ &async_pending); 4960 evpipe_write (EV_A_ &async_pending);
4304} 4961}
4305#endif 4962#endif
… …
4342 4999
4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5000 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4344} 5001}
4345 5002
4346void 5003void
4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5004ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4348{ 5005{
4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5006 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4350 5007
4351 if (expect_false (!once)) 5008 if (expect_false (!once))
4352 { 5009 {
… …
4373} 5030}
4374 5031
4375/*****************************************************************************/ 5032/*****************************************************************************/
4376 5033
4377#if EV_WALK_ENABLE 5034#if EV_WALK_ENABLE
4378void ecb_cold 5035ecb_cold
5036void
4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5037ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4380{ 5038{
4381 int i, j; 5039 int i, j;
4382 ev_watcher_list *wl, *wn; 5040 ev_watcher_list *wl, *wn;
4383 5041
4384 if (types & (EV_IO | EV_EMBED)) 5042 if (types & (EV_IO | EV_EMBED))

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