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Comparing libev/ev.c (file contents):
Revision 1.440 by root, Tue May 29 21:37:14 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
… …
208# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
210# endif 220# endif
211# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
212#endif 222#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 223
222/* 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 */
223 225
224/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 227#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 243#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 245#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 247#else
246# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 249#endif
251 250
252#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
254#endif 253#endif
255 254
256#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 258# else
260# 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
261# endif 269# endif
262#endif 270#endif
263 271
264#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 363# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 364#endif
357 365
358#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
359# 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
360#endif 384#endif
361 385
362/* 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, */
363/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
… …
372# define EV_USE_CLOCK_SYSCALL 0 396# define EV_USE_CLOCK_SYSCALL 0
373# endif 397# endif
374#endif 398#endif
375 399
376/* 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 */
377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383 401
384#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
387#endif 405#endif
… …
475/* 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 */
476/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
477/* 495/*
478 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
479 * 497 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 500 * All rights reserved.
483 * 501 *
484 * 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-
485 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
499 * 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;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * 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.
504 */ 533 */
505 534
506#ifndef ECB_H 535#ifndef ECB_H
507#define ECB_H 536#define ECB_H
508 537
509/* 16 bits major, 16 bits minor */ 538/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 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;
… …
530 #else 559 #else
531 #define ECB_PTRSIZE 4 560 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 561 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 562 typedef int32_t intptr_t;
534 #endif 563 #endif
535 typedef intptr_t ptrdiff_t;
536#else 564#else
537 #include <inttypes.h> 565 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 567 #define ECB_PTRSIZE 8
540 #else 568 #else
541 #define ECB_PTRSIZE 4 569 #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
542 #endif 582 #endif
543#endif 583#endif
544 584
545/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 588 * or so.
549 * 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
550 * 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.
551 */ 591 */
552#ifndef ECB_GCC_VERSION
553 #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__
554 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
555 #else 594#else
556 #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)))
557 #endif 596#endif
558#endif
559 597
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 599
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 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
563#define ECB_CPP (__cplusplus+0) 612#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L) 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
637#endif
566 638
567/*****************************************************************************/ 639/*****************************************************************************/
568 640
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 641/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* 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 */
… …
573 #define ECB_NO_SMP 1 645 #define ECB_NO_SMP 1
574#endif 646#endif
575 647
576#if ECB_NO_SMP 648#if ECB_NO_SMP
577 #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 */
578#endif 659#endif
579 660
580#ifndef ECB_MEMORY_FENCE 661#ifndef ECB_MEMORY_FENCE
581 #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
582 #if __i386 || __i386__ 663 #if __i386 || __i386__
583 #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")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 667 #elif ECB_GCC_AMD64
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #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 */
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
594 #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")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__ 687 #elif __aarch64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
599 #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")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__ 693 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #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. */
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
606 #elif defined __alpha__ 699 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__ 701 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 703 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__ 704 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 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")
613 #endif 712 #endif
614 #endif 713 #endif
615#endif 714#endif
616 715
617#ifndef ECB_MEMORY_FENCE 716#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7) 717 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */ 718 /* see comment below (stdatomic.h) about the C11 memory model. */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 719 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic) 720 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
622 /* see above */ 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. */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 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
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 729 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize () 730 #define ECB_MEMORY_FENCE __sync_synchronize ()
731 #elif _MSC_VER >= 1500 /* VC++ 2008 */
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()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 737 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 738 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 739 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #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 */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 741 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
644#ifndef ECB_MEMORY_FENCE 755#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 756 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */ 757 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */ 758 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h> 759 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */ 760 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */ 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 */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 768 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif 769 #endif
653#endif 770#endif
654 771
655#ifndef ECB_MEMORY_FENCE 772#ifndef ECB_MEMORY_FENCE
… …
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 795 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif 796#endif
680 797
681/*****************************************************************************/ 798/*****************************************************************************/
682 799
683#if __cplusplus 800#if ECB_CPP
684 #define ecb_inline static inline 801 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5) 802#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__ 803 #define ecb_inline static __inline__
687#elif ECB_C99 804#elif ECB_C99
688 #define ecb_inline static inline 805 #define ecb_inline static inline
… …
702 819
703#define ECB_CONCAT_(a, b) a ## b 820#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 821#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a 822#define ECB_STRINGIFY_(a) # a
706#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))
707 825
708#define ecb_function_ ecb_inline 826#define ecb_function_ ecb_inline
709 827
710#if ECB_GCC_VERSION(3,1) 828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
711 #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)
712 #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)
713 #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)
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 851 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else 852#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality) 853 #define ecb_prefetch(addr,rw,locality)
720#endif 854#endif
721 855
722/* no emulation for ecb_decltype */ 856/* no emulation for ecb_decltype */
723#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; };
724 #define ecb_decltype(x) __decltype(x) 860 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
725#elif ECB_GCC_VERSION(3,0) 861#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
726 #define ecb_decltype(x) __typeof(x) 862 #define ecb_decltype(x) __typeof__ (x)
727#endif 863#endif
728 864
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
729#define ecb_noinline ecb_attribute ((__noinline__)) 882 #define ecb_noinline ecb_attribute ((__noinline__))
883#endif
884
730#define ecb_unused ecb_attribute ((__unused__)) 885#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__)) 886#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__)) 887#define ecb_pure ecb_attribute ((__pure__))
733 888
734#if ECB_C11 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 */
735 #define ecb_noreturn _Noreturn 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)
736#else 897#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__)) 898 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif 899#endif
739 900
740#if ECB_GCC_VERSION(4,3) 901#if ECB_GCC_VERSION(4,3)
… …
755/* for compatibility to the rest of the world */ 916/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr) 917#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr) 918#define ecb_unlikely(expr) ecb_expect_false (expr)
758 919
759/* count trailing zero bits and count # of one bits */ 920/* count trailing zero bits and count # of one bits */
760#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))
761 /* 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 */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 926 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 927 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x) 928 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x) 929 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x) 930 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */ 931 /* no popcountll */
768#else 932#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
770 ecb_function_ int 934 ecb_function_ ecb_const int
771 ecb_ctz32 (uint32_t x) 935 ecb_ctz32 (uint32_t x)
772 { 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
773 int r = 0; 942 int r = 0;
774 943
775 x &= ~x + 1; /* this isolates the lowest bit */ 944 x &= ~x + 1; /* this isolates the lowest bit */
776 945
777#if ECB_branchless_on_i386 946#if ECB_branchless_on_i386
… …
787 if (x & 0xff00ff00) r += 8; 956 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16; 957 if (x & 0xffff0000) r += 16;
789#endif 958#endif
790 959
791 return r; 960 return r;
961#endif
792 } 962 }
793 963
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
795 ecb_function_ int 965 ecb_function_ ecb_const int
796 ecb_ctz64 (uint64_t x) 966 ecb_ctz64 (uint64_t x)
797 { 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
798 int shift = x & 0xffffffffU ? 0 : 32; 973 int shift = x & 0xffffffff ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift; 974 return ecb_ctz32 (x >> shift) + shift;
975#endif
800 } 976 }
801 977
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
803 ecb_function_ int 979 ecb_function_ ecb_const int
804 ecb_popcount32 (uint32_t x) 980 ecb_popcount32 (uint32_t x)
805 { 981 {
806 x -= (x >> 1) & 0x55555555; 982 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 983 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f; 984 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101; 985 x *= 0x01010101;
810 986
811 return x >> 24; 987 return x >> 24;
812 } 988 }
813 989
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
815 ecb_function_ int ecb_ld32 (uint32_t x) 991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
816 { 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
817 int r = 0; 998 int r = 0;
818 999
819 if (x >> 16) { x >>= 16; r += 16; } 1000 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; } 1001 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; } 1002 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; } 1003 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; } 1004 if (x >> 1) { r += 1; }
824 1005
825 return r; 1006 return r;
1007#endif
826 } 1008 }
827 1009
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
829 ecb_function_ int ecb_ld64 (uint64_t x) 1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
830 { 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
831 int r = 0; 1018 int r = 0;
832 1019
833 if (x >> 32) { x >>= 32; r += 32; } 1020 if (x >> 32) { x >>= 32; r += 32; }
834 1021
835 return r + ecb_ld32 (x); 1022 return r + ecb_ld32 (x);
1023#endif
836 } 1024 }
837#endif 1025#endif
838 1026
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1028ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1029ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1030ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843 1031
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1032ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1033ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
846{ 1034{
847 return ( (x * 0x0802U & 0x22110U) 1035 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1036 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849} 1037}
850 1038
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1039ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1040ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
853{ 1041{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1042 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1043 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1044 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8); 1045 x = ( x >> 8 ) | ( x << 8);
858 1046
859 return x; 1047 return x;
860} 1048}
861 1049
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1050ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1051ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
864{ 1052{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1053 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1054 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1055 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1056 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
871 return x; 1059 return x;
872} 1060}
873 1061
874/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1062/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */ 1063/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1064ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
877ecb_function_ int 1065ecb_function_ ecb_const int
878ecb_popcount64 (uint64_t x) 1066ecb_popcount64 (uint64_t x)
879{ 1067{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1068 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881} 1069}
882 1070
883ecb_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);
884ecb_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);
885ecb_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);
886ecb_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);
887ecb_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);
888ecb_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);
889ecb_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);
890ecb_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);
891 1079
892ecb_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); }
893ecb_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); }
894ecb_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); }
895ecb_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); }
896ecb_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); }
897ecb_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); }
898ecb_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); }
899ecb_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); }
900 1088
901#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
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1093 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1094 #endif
903 #define ecb_bswap32(x) __builtin_bswap32 (x) 1095 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #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)))
905#else 1102#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1103 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
907 ecb_function_ uint16_t 1104 ecb_function_ ecb_const uint16_t
908 ecb_bswap16 (uint16_t x) 1105 ecb_bswap16 (uint16_t x)
909 { 1106 {
910 return ecb_rotl16 (x, 8); 1107 return ecb_rotl16 (x, 8);
911 } 1108 }
912 1109
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1110 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
914 ecb_function_ uint32_t 1111 ecb_function_ ecb_const uint32_t
915 ecb_bswap32 (uint32_t x) 1112 ecb_bswap32 (uint32_t x)
916 { 1113 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1114 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 } 1115 }
919 1116
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1117 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
921 ecb_function_ uint64_t 1118 ecb_function_ ecb_const uint64_t
922 ecb_bswap64 (uint64_t x) 1119 ecb_bswap64 (uint64_t x)
923 { 1120 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1121 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 } 1122 }
926#endif 1123#endif
927 1124
928#if ECB_GCC_VERSION(4,5) 1125#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
929 #define ecb_unreachable() __builtin_unreachable () 1126 #define ecb_unreachable() __builtin_unreachable ()
930#else 1127#else
931 /* 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 :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1129 ecb_inline ecb_noreturn void ecb_unreachable (void);
933 ecb_inline void ecb_unreachable (void) { } 1130 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
934#endif 1131#endif
935 1132
936/* try to tell the compiler that some condition is definitely true */ 1133/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
938 1135
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
940ecb_inline unsigned char 1137ecb_inline ecb_const uint32_t
941ecb_byteorder_helper (void) 1138ecb_byteorder_helper (void)
942{ 1139{
943 const uint32_t u = 0x11223344; 1140 /* the union code still generates code under pressure in gcc, */
944 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
945} 1162}
946 1163
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
948ecb_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; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
950ecb_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; }
951 1168
952#if ECB_GCC_VERSION(3,0) || ECB_C99 1169#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #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))
954#else 1171#else
955 #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)))
956#endif 1173#endif
957 1174
958#if __cplusplus 1175#if ECB_CPP
959 template<typename T> 1176 template<typename T>
960 static inline T ecb_div_rd (T val, T div) 1177 static inline T ecb_div_rd (T val, T div)
961 { 1178 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1179 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 } 1180 }
… …
980 } 1197 }
981#else 1198#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif 1200#endif
984 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
985#endif 1507#endif
986 1508
987/* ECB.H END */ 1509/* ECB.H END */
988 1510
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1511#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
1010#define inline_size ecb_inline 1532#define inline_size ecb_inline
1011 1533
1012#if EV_FEATURE_CODE 1534#if EV_FEATURE_CODE
1013# define inline_speed ecb_inline 1535# define inline_speed ecb_inline
1014#else 1536#else
1015# define inline_speed static noinline 1537# define inline_speed noinline static
1016#endif 1538#endif
1017 1539
1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1019 1541
1020#if EV_MINPRI == EV_MAXPRI 1542#if EV_MINPRI == EV_MAXPRI
… …
1067#else 1589#else
1068 1590
1069#include <float.h> 1591#include <float.h>
1070 1592
1071/* a floor() replacement function, should be independent of ev_tstamp type */ 1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1072static ev_tstamp noinline 1595static ev_tstamp
1073ev_floor (ev_tstamp v) 1596ev_floor (ev_tstamp v)
1074{ 1597{
1075 /* the choice of shift factor is not terribly important */ 1598 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1109 1632
1110#ifdef __linux 1633#ifdef __linux
1111# include <sys/utsname.h> 1634# include <sys/utsname.h>
1112#endif 1635#endif
1113 1636
1114static unsigned int noinline ecb_cold 1637noinline ecb_cold
1638static unsigned int
1115ev_linux_version (void) 1639ev_linux_version (void)
1116{ 1640{
1117#ifdef __linux 1641#ifdef __linux
1118 unsigned int v = 0; 1642 unsigned int v = 0;
1119 struct utsname buf; 1643 struct utsname buf;
… …
1148} 1672}
1149 1673
1150/*****************************************************************************/ 1674/*****************************************************************************/
1151 1675
1152#if EV_AVOID_STDIO 1676#if EV_AVOID_STDIO
1153static void noinline ecb_cold 1677noinline ecb_cold
1678static void
1154ev_printerr (const char *msg) 1679ev_printerr (const char *msg)
1155{ 1680{
1156 write (STDERR_FILENO, msg, strlen (msg)); 1681 write (STDERR_FILENO, msg, strlen (msg));
1157} 1682}
1158#endif 1683#endif
1159 1684
1160static void (*syserr_cb)(const char *msg) EV_THROW; 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1161 1686
1162void ecb_cold 1687ecb_cold
1688void
1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1689ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1164{ 1690{
1165 syserr_cb = cb; 1691 syserr_cb = cb;
1166} 1692}
1167 1693
1168static void noinline ecb_cold 1694noinline ecb_cold
1695static void
1169ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
1170{ 1697{
1171 if (!msg) 1698 if (!msg)
1172 msg = "(libev) system error"; 1699 msg = "(libev) system error";
1173 1700
… …
1186 abort (); 1713 abort ();
1187 } 1714 }
1188} 1715}
1189 1716
1190static void * 1717static void *
1191ev_realloc_emul (void *ptr, long size) EV_THROW 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1192{ 1719{
1193#if __GLIBC__
1194 return realloc (ptr, size);
1195#else
1196 /* some systems, notably openbsd and darwin, fail to properly 1720 /* some systems, notably openbsd and darwin, fail to properly
1197 * 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
1198 * 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.
1199 */ 1725 */
1200 1726
1201 if (size) 1727 if (size)
1202 return realloc (ptr, size); 1728 return realloc (ptr, size);
1203 1729
1204 free (ptr); 1730 free (ptr);
1205 return 0; 1731 return 0;
1206#endif
1207} 1732}
1208 1733
1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1210 1735
1211void ecb_cold 1736ecb_cold
1737void
1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1738ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1213{ 1739{
1214 alloc = cb; 1740 alloc = cb;
1215} 1741}
1216 1742
1217inline_speed void * 1743inline_speed void *
… …
1334 1860
1335/*****************************************************************************/ 1861/*****************************************************************************/
1336 1862
1337#ifndef EV_HAVE_EV_TIME 1863#ifndef EV_HAVE_EV_TIME
1338ev_tstamp 1864ev_tstamp
1339ev_time (void) EV_THROW 1865ev_time (void) EV_NOEXCEPT
1340{ 1866{
1341#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
1342 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
1343 { 1869 {
1344 struct timespec ts; 1870 struct timespec ts;
… …
1368 return ev_time (); 1894 return ev_time ();
1369} 1895}
1370 1896
1371#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1372ev_tstamp 1898ev_tstamp
1373ev_now (EV_P) EV_THROW 1899ev_now (EV_P) EV_NOEXCEPT
1374{ 1900{
1375 return ev_rt_now; 1901 return ev_rt_now;
1376} 1902}
1377#endif 1903#endif
1378 1904
1379void 1905void
1380ev_sleep (ev_tstamp delay) EV_THROW 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1381{ 1907{
1382 if (delay > 0.) 1908 if (delay > 0.)
1383 { 1909 {
1384#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
1385 struct timespec ts; 1911 struct timespec ts;
1386 1912
1387 EV_TS_SET (ts, delay); 1913 EV_TS_SET (ts, delay);
1388 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
1389#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) */
1390 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
1391#else 1919#else
1392 struct timeval tv; 1920 struct timeval tv;
1393 1921
1394 /* 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 */
… …
1425 } 1953 }
1426 1954
1427 return ncur; 1955 return ncur;
1428} 1956}
1429 1957
1430static void * noinline ecb_cold 1958noinline ecb_cold
1959static void *
1431array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
1432{ 1961{
1433 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
1434 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
1435} 1964}
… …
1438 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1439 1968
1440#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
1441 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
1442 { \ 1971 { \
1443 int ecb_unused ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
1444 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
1445 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
1446 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
1447 } 1976 }
1448 1977
… …
1460 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
1461 1990
1462/*****************************************************************************/ 1991/*****************************************************************************/
1463 1992
1464/* dummy callback for pending events */ 1993/* dummy callback for pending events */
1465static void noinline 1994noinline
1995static void
1466pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
1467{ 1997{
1468} 1998}
1469 1999
1470void noinline 2000noinline
2001void
1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1472{ 2003{
1473 W w_ = (W)w; 2004 W w_ = (W)w;
1474 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
1475 2006
1476 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
… …
1537 if (expect_true (!anfd->reify)) 2068 if (expect_true (!anfd->reify))
1538 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1539} 2070}
1540 2071
1541void 2072void
1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1543{ 2074{
1544 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
1545 fd_event_nocheck (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
1546} 2077}
1547 2078
… …
1605 2136
1606 fdchangecnt = 0; 2137 fdchangecnt = 0;
1607} 2138}
1608 2139
1609/* something about the given fd changed */ 2140/* something about the given fd changed */
1610inline_size void 2141inline_size
2142void
1611fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
1612{ 2144{
1613 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
1614 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
1615 2147
… …
1620 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
1621 } 2153 }
1622} 2154}
1623 2155
1624/* 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 */
1625inline_speed void ecb_cold 2157inline_speed ecb_cold void
1626fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
1627{ 2159{
1628 ev_io *w; 2160 ev_io *w;
1629 2161
1630 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
… …
1633 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);
1634 } 2166 }
1635} 2167}
1636 2168
1637/* check whether the given fd is actually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
1638inline_size int ecb_cold 2170inline_size ecb_cold int
1639fd_valid (int fd) 2171fd_valid (int fd)
1640{ 2172{
1641#ifdef _WIN32 2173#ifdef _WIN32
1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1643#else 2175#else
1644 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
1645#endif 2177#endif
1646} 2178}
1647 2179
1648/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
1649static void noinline ecb_cold 2181noinline ecb_cold
2182static void
1650fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
1651{ 2184{
1652 int fd; 2185 int fd;
1653 2186
1654 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
… …
1656 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
1657 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
1658} 2191}
1659 2192
1660/* 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 */
1661static void noinline ecb_cold 2194noinline ecb_cold
2195static void
1662fd_enomem (EV_P) 2196fd_enomem (EV_P)
1663{ 2197{
1664 int fd; 2198 int fd;
1665 2199
1666 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
… …
1670 break; 2204 break;
1671 } 2205 }
1672} 2206}
1673 2207
1674/* 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 */
1675static void noinline 2209noinline
2210static void
1676fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
1677{ 2212{
1678 int fd; 2213 int fd;
1679 2214
1680 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1861 2396
1862/*****************************************************************************/ 2397/*****************************************************************************/
1863 2398
1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1865 2400
1866static void noinline ecb_cold 2401noinline ecb_cold
2402static void
1867evpipe_init (EV_P) 2403evpipe_init (EV_P)
1868{ 2404{
1869 if (!ev_is_active (&pipe_w)) 2405 if (!ev_is_active (&pipe_w))
1870 { 2406 {
2407 int fds [2];
2408
1871# if EV_USE_EVENTFD 2409# if EV_USE_EVENTFD
2410 fds [0] = -1;
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2411 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL) 2412 if (fds [1] < 0 && errno == EINVAL)
1874 evfd = eventfd (0, 0); 2413 fds [1] = eventfd (0, 0);
1875 2414
1876 if (evfd >= 0) 2415 if (fds [1] < 0)
1877 {
1878 evpipe [0] = -1;
1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1880 ev_io_set (&pipe_w, evfd, EV_READ);
1881 }
1882 else
1883# endif 2416# endif
1884 { 2417 {
1885 while (pipe (evpipe)) 2418 while (pipe (fds))
1886 ev_syserr ("(libev) error creating signal/async pipe"); 2419 ev_syserr ("(libev) error creating signal/async pipe");
1887 2420
1888 fd_intern (evpipe [0]); 2421 fd_intern (fds [0]);
1889 fd_intern (evpipe [1]);
1890 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1891 } 2422 }
1892 2423
2424 evpipe [0] = fds [0];
2425
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);
1893 ev_io_start (EV_A_ &pipe_w); 2442 ev_io_start (EV_A_ &pipe_w);
1894 ev_unref (EV_A); /* watcher should not keep loop alive */ 2443 ev_unref (EV_A); /* watcher should not keep loop alive */
1895 } 2444 }
1896} 2445}
1897 2446
… …
1918 ECB_MEMORY_FENCE_RELEASE; 2467 ECB_MEMORY_FENCE_RELEASE;
1919 2468
1920 old_errno = errno; /* save errno because write will clobber it */ 2469 old_errno = errno; /* save errno because write will clobber it */
1921 2470
1922#if EV_USE_EVENTFD 2471#if EV_USE_EVENTFD
1923 if (evfd >= 0) 2472 if (evpipe [0] < 0)
1924 { 2473 {
1925 uint64_t counter = 1; 2474 uint64_t counter = 1;
1926 write (evfd, &counter, sizeof (uint64_t)); 2475 write (evpipe [1], &counter, sizeof (uint64_t));
1927 } 2476 }
1928 else 2477 else
1929#endif 2478#endif
1930 { 2479 {
1931#ifdef _WIN32 2480#ifdef _WIN32
1932 WSABUF buf; 2481 WSABUF buf;
1933 DWORD sent; 2482 DWORD sent;
1934 buf.buf = &buf; 2483 buf.buf = (char *)&buf;
1935 buf.len = 1; 2484 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2485 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else 2486#else
1938 write (evpipe [1], &(evpipe [1]), 1); 2487 write (evpipe [1], &(evpipe [1]), 1);
1939#endif 2488#endif
… …
1951 int i; 2500 int i;
1952 2501
1953 if (revents & EV_READ) 2502 if (revents & EV_READ)
1954 { 2503 {
1955#if EV_USE_EVENTFD 2504#if EV_USE_EVENTFD
1956 if (evfd >= 0) 2505 if (evpipe [0] < 0)
1957 { 2506 {
1958 uint64_t counter; 2507 uint64_t counter;
1959 read (evfd, &counter, sizeof (uint64_t)); 2508 read (evpipe [1], &counter, sizeof (uint64_t));
1960 } 2509 }
1961 else 2510 else
1962#endif 2511#endif
1963 { 2512 {
1964 char dummy[4]; 2513 char dummy[4];
… …
2011} 2560}
2012 2561
2013/*****************************************************************************/ 2562/*****************************************************************************/
2014 2563
2015void 2564void
2016ev_feed_signal (int signum) EV_THROW 2565ev_feed_signal (int signum) EV_NOEXCEPT
2017{ 2566{
2018#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
2568 EV_P;
2569 ECB_MEMORY_FENCE_ACQUIRE;
2019 EV_P = signals [signum - 1].loop; 2570 EV_A = signals [signum - 1].loop;
2020 2571
2021 if (!EV_A) 2572 if (!EV_A)
2022 return; 2573 return;
2023#endif 2574#endif
2024 2575
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1; 2576 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending); 2577 evpipe_write (EV_A_ &sig_pending);
2030} 2578}
2031 2579
2032static void 2580static void
… …
2037#endif 2585#endif
2038 2586
2039 ev_feed_signal (signum); 2587 ev_feed_signal (signum);
2040} 2588}
2041 2589
2042void noinline 2590noinline
2591void
2043ev_feed_signal_event (EV_P_ int signum) EV_THROW 2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2044{ 2593{
2045 WL w; 2594 WL w;
2046 2595
2047 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2048 return; 2597 return;
2049 2598
2050 --signum; 2599 --signum;
2051 2600
2052#if EV_MULTIPLICITY 2601#if EV_MULTIPLICITY
… …
2164#endif 2713#endif
2165#if EV_USE_SELECT 2714#if EV_USE_SELECT
2166# include "ev_select.c" 2715# include "ev_select.c"
2167#endif 2716#endif
2168 2717
2169int ecb_cold 2718ecb_cold int
2170ev_version_major (void) EV_THROW 2719ev_version_major (void) EV_NOEXCEPT
2171{ 2720{
2172 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
2173} 2722}
2174 2723
2175int ecb_cold 2724ecb_cold int
2176ev_version_minor (void) EV_THROW 2725ev_version_minor (void) EV_NOEXCEPT
2177{ 2726{
2178 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
2179} 2728}
2180 2729
2181/* 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 */
2182int inline_size ecb_cold 2731inline_size ecb_cold int
2183enable_secure (void) 2732enable_secure (void)
2184{ 2733{
2185#ifdef _WIN32 2734#ifdef _WIN32
2186 return 0; 2735 return 0;
2187#else 2736#else
2188 return getuid () != geteuid () 2737 return getuid () != geteuid ()
2189 || getgid () != getegid (); 2738 || getgid () != getegid ();
2190#endif 2739#endif
2191} 2740}
2192 2741
2193unsigned int ecb_cold 2742ecb_cold
2743unsigned int
2194ev_supported_backends (void) EV_THROW 2744ev_supported_backends (void) EV_NOEXCEPT
2195{ 2745{
2196 unsigned int flags = 0; 2746 unsigned int flags = 0;
2197 2747
2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2203 2753
2204 return flags; 2754 return flags;
2205} 2755}
2206 2756
2207unsigned int ecb_cold 2757ecb_cold
2758unsigned int
2208ev_recommended_backends (void) EV_THROW 2759ev_recommended_backends (void) EV_NOEXCEPT
2209{ 2760{
2210 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
2211 2762
2212#ifndef __NetBSD__ 2763#ifndef __NetBSD__
2213 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
… …
2224#endif 2775#endif
2225 2776
2226 return flags; 2777 return flags;
2227} 2778}
2228 2779
2229unsigned int ecb_cold 2780ecb_cold
2781unsigned int
2230ev_embeddable_backends (void) EV_THROW 2782ev_embeddable_backends (void) EV_NOEXCEPT
2231{ 2783{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233 2785
2234 /* 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 */
2235 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 */
… …
2237 2789
2238 return flags; 2790 return flags;
2239} 2791}
2240 2792
2241unsigned int 2793unsigned int
2242ev_backend (EV_P) EV_THROW 2794ev_backend (EV_P) EV_NOEXCEPT
2243{ 2795{
2244 return backend; 2796 return backend;
2245} 2797}
2246 2798
2247#if EV_FEATURE_API 2799#if EV_FEATURE_API
2248unsigned int 2800unsigned int
2249ev_iteration (EV_P) EV_THROW 2801ev_iteration (EV_P) EV_NOEXCEPT
2250{ 2802{
2251 return loop_count; 2803 return loop_count;
2252} 2804}
2253 2805
2254unsigned int 2806unsigned int
2255ev_depth (EV_P) EV_THROW 2807ev_depth (EV_P) EV_NOEXCEPT
2256{ 2808{
2257 return loop_depth; 2809 return loop_depth;
2258} 2810}
2259 2811
2260void 2812void
2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2262{ 2814{
2263 io_blocktime = interval; 2815 io_blocktime = interval;
2264} 2816}
2265 2817
2266void 2818void
2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2268{ 2820{
2269 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
2270} 2822}
2271 2823
2272void 2824void
2273ev_set_userdata (EV_P_ void *data) EV_THROW 2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2274{ 2826{
2275 userdata = data; 2827 userdata = data;
2276} 2828}
2277 2829
2278void * 2830void *
2279ev_userdata (EV_P) EV_THROW 2831ev_userdata (EV_P) EV_NOEXCEPT
2280{ 2832{
2281 return userdata; 2833 return userdata;
2282} 2834}
2283 2835
2284void 2836void
2285ev_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
2286{ 2838{
2287 invoke_cb = invoke_pending_cb; 2839 invoke_cb = invoke_pending_cb;
2288} 2840}
2289 2841
2290void 2842void
2291ev_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
2292{ 2844{
2293 release_cb = release; 2845 release_cb = release;
2294 acquire_cb = acquire; 2846 acquire_cb = acquire;
2295} 2847}
2296#endif 2848#endif
2297 2849
2298/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
2299static void noinline ecb_cold 2851noinline ecb_cold
2852static void
2300loop_init (EV_P_ unsigned int flags) EV_THROW 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2301{ 2854{
2302 if (!backend) 2855 if (!backend)
2303 { 2856 {
2304 origflags = flags; 2857 origflags = flags;
2305 2858
… …
2350#if EV_ASYNC_ENABLE 2903#if EV_ASYNC_ENABLE
2351 async_pending = 0; 2904 async_pending = 0;
2352#endif 2905#endif
2353 pipe_write_skipped = 0; 2906 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0; 2907 pipe_write_wanted = 0;
2908 evpipe [0] = -1;
2909 evpipe [1] = -1;
2355#if EV_USE_INOTIFY 2910#if EV_USE_INOTIFY
2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2911 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2357#endif 2912#endif
2358#if EV_USE_SIGNALFD 2913#if EV_USE_SIGNALFD
2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2914 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2389#endif 2944#endif
2390 } 2945 }
2391} 2946}
2392 2947
2393/* free up a loop structure */ 2948/* free up a loop structure */
2394void ecb_cold 2949ecb_cold
2950void
2395ev_loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
2396{ 2952{
2397 int i; 2953 int i;
2398 2954
2399#if EV_MULTIPLICITY 2955#if EV_MULTIPLICITY
… …
2422 if (ev_is_active (&pipe_w)) 2978 if (ev_is_active (&pipe_w))
2423 { 2979 {
2424 /*ev_ref (EV_A);*/ 2980 /*ev_ref (EV_A);*/
2425 /*ev_io_stop (EV_A_ &pipe_w);*/ 2981 /*ev_io_stop (EV_A_ &pipe_w);*/
2426 2982
2427#if EV_USE_EVENTFD
2428 if (evfd >= 0)
2429 close (evfd);
2430#endif
2431
2432 if (evpipe [0] >= 0)
2433 {
2434 EV_WIN32_CLOSE_FD (evpipe [0]); 2983 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2435 EV_WIN32_CLOSE_FD (evpipe [1]); 2984 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2436 }
2437 } 2985 }
2438 2986
2439#if EV_USE_SIGNALFD 2987#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w)) 2988 if (ev_is_active (&sigfd_w))
2441 close (sigfd); 2989 close (sigfd);
… …
2527#endif 3075#endif
2528#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
2529 infy_fork (EV_A); 3077 infy_fork (EV_A);
2530#endif 3078#endif
2531 3079
3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2532 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
2533 { 3082 {
2534 /* 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 */
2535 3084
2536 ev_ref (EV_A); 3085 ev_ref (EV_A);
2537 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
2538 3087
2539#if EV_USE_EVENTFD
2540 if (evfd >= 0)
2541 close (evfd);
2542#endif
2543
2544 if (evpipe [0] >= 0) 3088 if (evpipe [0] >= 0)
2545 {
2546 EV_WIN32_CLOSE_FD (evpipe [0]); 3089 EV_WIN32_CLOSE_FD (evpipe [0]);
2547 EV_WIN32_CLOSE_FD (evpipe [1]);
2548 }
2549 3090
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2551 evpipe_init (EV_A); 3091 evpipe_init (EV_A);
2552 /* now iterate over everything, in case we missed something */ 3092 /* iterate over everything, in case we missed something before */
2553 pipecb (EV_A_ &pipe_w, EV_READ); 3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2554#endif
2555 } 3094 }
3095#endif
2556 3096
2557 postfork = 0; 3097 postfork = 0;
2558} 3098}
2559 3099
2560#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
2561 3101
3102ecb_cold
2562struct ev_loop * ecb_cold 3103struct ev_loop *
2563ev_loop_new (unsigned int flags) EV_THROW 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
2564{ 3105{
2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2566 3107
2567 memset (EV_A, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
2568 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
… …
2575} 3116}
2576 3117
2577#endif /* multiplicity */ 3118#endif /* multiplicity */
2578 3119
2579#if EV_VERIFY 3120#if EV_VERIFY
2580static void noinline ecb_cold 3121noinline ecb_cold
3122static void
2581verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
2582{ 3124{
2583 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));
2584 3126
2585 if (w->pending) 3127 if (w->pending)
2586 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));
2587} 3129}
2588 3130
2589static void noinline ecb_cold 3131noinline ecb_cold
3132static void
2590verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
2591{ 3134{
2592 int i; 3135 int i;
2593 3136
2594 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2599 3142
2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2601 } 3144 }
2602} 3145}
2603 3146
2604static void noinline ecb_cold 3147noinline ecb_cold
3148static void
2605array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
2606{ 3150{
2607 while (cnt--) 3151 while (cnt--)
2608 { 3152 {
2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2612} 3156}
2613#endif 3157#endif
2614 3158
2615#if EV_FEATURE_API 3159#if EV_FEATURE_API
2616void ecb_cold 3160void ecb_cold
2617ev_verify (EV_P) EV_THROW 3161ev_verify (EV_P) EV_NOEXCEPT
2618{ 3162{
2619#if EV_VERIFY 3163#if EV_VERIFY
2620 int i; 3164 int i;
2621 WL w, w2; 3165 WL w, w2;
2622 3166
… …
2698#endif 3242#endif
2699} 3243}
2700#endif 3244#endif
2701 3245
2702#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
2703struct ev_loop * ecb_cold 3248struct ev_loop *
2704#else 3249#else
2705int 3250int
2706#endif 3251#endif
2707ev_default_loop (unsigned int flags) EV_THROW 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
2708{ 3253{
2709 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
2710 { 3255 {
2711#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
2712 EV_P = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2731 3276
2732 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
2733} 3278}
2734 3279
2735void 3280void
2736ev_loop_fork (EV_P) EV_THROW 3281ev_loop_fork (EV_P) EV_NOEXCEPT
2737{ 3282{
2738 postfork = 1; 3283 postfork = 1;
2739} 3284}
2740 3285
2741/*****************************************************************************/ 3286/*****************************************************************************/
… …
2745{ 3290{
2746 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
2747} 3292}
2748 3293
2749unsigned int 3294unsigned int
2750ev_pending_count (EV_P) EV_THROW 3295ev_pending_count (EV_P) EV_NOEXCEPT
2751{ 3296{
2752 int pri; 3297 int pri;
2753 unsigned int count = 0; 3298 unsigned int count = 0;
2754 3299
2755 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
2756 count += pendingcnt [pri]; 3301 count += pendingcnt [pri];
2757 3302
2758 return count; 3303 return count;
2759} 3304}
2760 3305
2761void noinline 3306noinline
3307void
2762ev_invoke_pending (EV_P) 3308ev_invoke_pending (EV_P)
2763{ 3309{
2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3310 pendingpri = NUMPRI;
3311
3312 do
3313 {
3314 --pendingpri;
3315
3316 /* pendingpri possibly gets modified in the inner loop */
2765 while (pendingcnt [pendingpri]) 3317 while (pendingcnt [pendingpri])
2766 { 3318 {
2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2768 3320
2769 p->w->pending = 0; 3321 p->w->pending = 0;
2770 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
2771 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2772 } 3324 }
3325 }
3326 while (pendingpri);
2773} 3327}
2774 3328
2775#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
2776/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
2777/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
… …
2835 } 3389 }
2836} 3390}
2837 3391
2838#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
2839 3393
2840static void noinline 3394noinline
3395static void
2841periodic_recalc (EV_P_ ev_periodic *w) 3396periodic_recalc (EV_P_ ev_periodic *w)
2842{ 3397{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 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);
2845 3400
… …
2903 } 3458 }
2904} 3459}
2905 3460
2906/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
2907/* 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? */
2908static void noinline ecb_cold 3463noinline ecb_cold
3464static void
2909periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
2910{ 3466{
2911 int i; 3467 int i;
2912 3468
2913 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
… …
2926 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
2927} 3483}
2928#endif 3484#endif
2929 3485
2930/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
2931static void noinline ecb_cold 3487noinline ecb_cold
3488static void
2932timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
2933{ 3490{
2934 int i; 3491 int i;
2935 3492
2936 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
… …
3135 backend_poll (EV_A_ waittime); 3692 backend_poll (EV_A_ waittime);
3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3693 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137 3694
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3695 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139 3696
3697 ECB_MEMORY_FENCE_ACQUIRE;
3140 if (pipe_write_skipped) 3698 if (pipe_write_skipped)
3141 { 3699 {
3142 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)));
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3701 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3144 } 3702 }
… …
3182 3740
3183 return activecnt; 3741 return activecnt;
3184} 3742}
3185 3743
3186void 3744void
3187ev_break (EV_P_ int how) EV_THROW 3745ev_break (EV_P_ int how) EV_NOEXCEPT
3188{ 3746{
3189 loop_done = how; 3747 loop_done = how;
3190} 3748}
3191 3749
3192void 3750void
3193ev_ref (EV_P) EV_THROW 3751ev_ref (EV_P) EV_NOEXCEPT
3194{ 3752{
3195 ++activecnt; 3753 ++activecnt;
3196} 3754}
3197 3755
3198void 3756void
3199ev_unref (EV_P) EV_THROW 3757ev_unref (EV_P) EV_NOEXCEPT
3200{ 3758{
3201 --activecnt; 3759 --activecnt;
3202} 3760}
3203 3761
3204void 3762void
3205ev_now_update (EV_P) EV_THROW 3763ev_now_update (EV_P) EV_NOEXCEPT
3206{ 3764{
3207 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
3208} 3766}
3209 3767
3210void 3768void
3211ev_suspend (EV_P) EV_THROW 3769ev_suspend (EV_P) EV_NOEXCEPT
3212{ 3770{
3213 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
3214} 3772}
3215 3773
3216void 3774void
3217ev_resume (EV_P) EV_THROW 3775ev_resume (EV_P) EV_NOEXCEPT
3218{ 3776{
3219 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
3220 3778
3221 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
3222 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3261 w->pending = 0; 3819 w->pending = 0;
3262 } 3820 }
3263} 3821}
3264 3822
3265int 3823int
3266ev_clear_pending (EV_P_ void *w) EV_THROW 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3267{ 3825{
3268 W w_ = (W)w; 3826 W w_ = (W)w;
3269 int pending = w_->pending; 3827 int pending = w_->pending;
3270 3828
3271 if (expect_true (pending)) 3829 if (expect_true (pending))
… …
3303 w->active = 0; 3861 w->active = 0;
3304} 3862}
3305 3863
3306/*****************************************************************************/ 3864/*****************************************************************************/
3307 3865
3308void noinline 3866noinline
3867void
3309ev_io_start (EV_P_ ev_io *w) EV_THROW 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3310{ 3869{
3311 int fd = w->fd; 3870 int fd = w->fd;
3312 3871
3313 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
3314 return; 3873 return;
… …
3329 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
3330 3889
3331 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
3332} 3891}
3333 3892
3334void noinline 3893noinline
3894void
3335ev_io_stop (EV_P_ ev_io *w) EV_THROW 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3336{ 3896{
3337 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
3338 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
3339 return; 3899 return;
3340 3900
… …
3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3349 3909
3350 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
3351} 3911}
3352 3912
3353void noinline 3913noinline
3914void
3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3355{ 3916{
3356 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3357 return; 3918 return;
3358 3919
3359 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
… …
3372 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
3373 3934
3374 /*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));*/
3375} 3936}
3376 3937
3377void noinline 3938noinline
3939void
3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3379{ 3941{
3380 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
3381 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
3382 return; 3944 return;
3383 3945
… …
3402 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
3403 3965
3404 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3405} 3967}
3406 3968
3407void noinline 3969noinline
3970void
3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3409{ 3972{
3410 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3411 3974
3412 clear_pending (EV_A_ (W)w); 3975 clear_pending (EV_A_ (W)w);
3413 3976
… …
3430 3993
3431 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
3432} 3995}
3433 3996
3434ev_tstamp 3997ev_tstamp
3435ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3436{ 3999{
3437 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3438} 4001}
3439 4002
3440#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
3441void noinline 4004noinline
4005void
3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3443{ 4007{
3444 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
3445 return; 4009 return;
3446 4010
3447 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
… …
3466 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3467 4031
3468 /*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));*/
3469} 4033}
3470 4034
3471void noinline 4035noinline
4036void
3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3473{ 4038{
3474 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
3475 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
3476 return; 4041 return;
3477 4042
… …
3494 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
3495 4060
3496 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3497} 4062}
3498 4063
3499void noinline 4064noinline
4065void
3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3501{ 4067{
3502 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
3503 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
3504 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
3505} 4071}
… …
3509# define SA_RESTART 0 4075# define SA_RESTART 0
3510#endif 4076#endif
3511 4077
3512#if EV_SIGNAL_ENABLE 4078#if EV_SIGNAL_ENABLE
3513 4079
3514void noinline 4080noinline
4081void
3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3516{ 4083{
3517 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
3518 return; 4085 return;
3519 4086
3520 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));
… …
3522#if EV_MULTIPLICITY 4089#if EV_MULTIPLICITY
3523 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",
3524 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4091 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3525 4092
3526 signals [w->signum - 1].loop = EV_A; 4093 signals [w->signum - 1].loop = EV_A;
4094 ECB_MEMORY_FENCE_RELEASE;
3527#endif 4095#endif
3528 4096
3529 EV_FREQUENT_CHECK; 4097 EV_FREQUENT_CHECK;
3530 4098
3531#if EV_USE_SIGNALFD 4099#if EV_USE_SIGNALFD
… …
3590 } 4158 }
3591 4159
3592 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
3593} 4161}
3594 4162
3595void noinline 4163noinline
4164void
3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3597{ 4166{
3598 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
3600 return; 4169 return;
3601 4170
… …
3632#endif 4201#endif
3633 4202
3634#if EV_CHILD_ENABLE 4203#if EV_CHILD_ENABLE
3635 4204
3636void 4205void
3637ev_child_start (EV_P_ ev_child *w) EV_THROW 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3638{ 4207{
3639#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
3640 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));
3641#endif 4210#endif
3642 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
… …
3649 4218
3650 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3651} 4220}
3652 4221
3653void 4222void
3654ev_child_stop (EV_P_ ev_child *w) EV_THROW 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3655{ 4224{
3656 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3657 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3658 return; 4227 return;
3659 4228
… …
3676 4245
3677#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
3678#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3679#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
3680 4249
3681static 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);
3682 4251
3683#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
3684 4253
3685/* 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 */
3686# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3687 4256
3688static void noinline 4257noinline
4258static void
3689infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
3690{ 4260{
3691 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);
3692 4265
3693 if (w->wd >= 0) 4266 if (w->wd >= 0)
3694 { 4267 {
3695 struct statfs sfs; 4268 struct statfs sfs;
3696 4269
… …
3700 4273
3701 if (!fs_2625) 4274 if (!fs_2625)
3702 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4275 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3703 else if (!statfs (w->path, &sfs) 4276 else if (!statfs (w->path, &sfs)
3704 && (sfs.f_type == 0x1373 /* devfs */ 4277 && (sfs.f_type == 0x1373 /* devfs */
4278 || sfs.f_type == 0x4006 /* fat */
4279 || sfs.f_type == 0x4d44 /* msdos */
3705 || 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 */
3706 || sfs.f_type == 0x3153464a /* jfs */ 4284 || sfs.f_type == 0x3153464a /* jfs */
4285 || sfs.f_type == 0x9123683e /* btrfs */
3707 || sfs.f_type == 0x52654973 /* reiser3 */ 4286 || sfs.f_type == 0x52654973 /* reiser3 */
3708 || sfs.f_type == 0x01021994 /* tempfs */ 4287 || sfs.f_type == 0x01021994 /* tmpfs */
3709 || sfs.f_type == 0x58465342 /* xfs */)) 4288 || sfs.f_type == 0x58465342 /* xfs */))
3710 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4289 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3711 else 4290 else
3712 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 */
3713 } 4292 }
… …
3748 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3749 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
3750 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3751} 4330}
3752 4331
3753static void noinline 4332noinline
4333static void
3754infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
3755{ 4335{
3756 int slot; 4336 int slot;
3757 int wd = w->wd; 4337 int wd = w->wd;
3758 4338
… …
3765 4345
3766 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
3767 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
3768} 4348}
3769 4349
3770static void noinline 4350noinline
4351static void
3771infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3772{ 4353{
3773 if (slot < 0) 4354 if (slot < 0)
3774 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
3775 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3811 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3812 ofs += sizeof (struct inotify_event) + ev->len; 4393 ofs += sizeof (struct inotify_event) + ev->len;
3813 } 4394 }
3814} 4395}
3815 4396
3816inline_size void ecb_cold 4397inline_size ecb_cold
4398void
3817ev_check_2625 (EV_P) 4399ev_check_2625 (EV_P)
3818{ 4400{
3819 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
3820 * 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
3821 */ 4403 */
… …
3911#else 4493#else
3912# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
3913#endif 4495#endif
3914 4496
3915void 4497void
3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3917{ 4499{
3918 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
3919 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
3920 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
3921 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
3922} 4504}
3923 4505
3924static void noinline 4506noinline
4507static void
3925stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3926{ 4509{
3927 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3928 4511
3929 ev_statdata prev = w->attr; 4512 ev_statdata prev = w->attr;
… …
3960 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
3961 } 4544 }
3962} 4545}
3963 4546
3964void 4547void
3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3966{ 4549{
3967 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
3968 return; 4551 return;
3969 4552
3970 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
… …
3991 4574
3992 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3993} 4576}
3994 4577
3995void 4578void
3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3997{ 4580{
3998 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3999 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
4000 return; 4583 return;
4001 4584
… …
4017} 4600}
4018#endif 4601#endif
4019 4602
4020#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
4021void 4604void
4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4023{ 4606{
4024 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
4025 return; 4608 return;
4026 4609
4027 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
… …
4040 4623
4041 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
4042} 4625}
4043 4626
4044void 4627void
4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4046{ 4629{
4047 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
4048 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
4049 return; 4632 return;
4050 4633
… …
4064} 4647}
4065#endif 4648#endif
4066 4649
4067#if EV_PREPARE_ENABLE 4650#if EV_PREPARE_ENABLE
4068void 4651void
4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4070{ 4653{
4071 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
4072 return; 4655 return;
4073 4656
4074 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
… …
4079 4662
4080 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
4081} 4664}
4082 4665
4083void 4666void
4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4085{ 4668{
4086 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
4087 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
4088 return; 4671 return;
4089 4672
… …
4102} 4685}
4103#endif 4686#endif
4104 4687
4105#if EV_CHECK_ENABLE 4688#if EV_CHECK_ENABLE
4106void 4689void
4107ev_check_start (EV_P_ ev_check *w) EV_THROW 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4108{ 4691{
4109 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
4110 return; 4693 return;
4111 4694
4112 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
… …
4117 4700
4118 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
4119} 4702}
4120 4703
4121void 4704void
4122ev_check_stop (EV_P_ ev_check *w) EV_THROW 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4123{ 4706{
4124 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
4126 return; 4709 return;
4127 4710
… …
4139 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
4140} 4723}
4141#endif 4724#endif
4142 4725
4143#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
4144void noinline 4727noinline
4728void
4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4146{ 4730{
4147 ev_run (w->other, EVRUN_NOWAIT); 4731 ev_run (w->other, EVRUN_NOWAIT);
4148} 4732}
4149 4733
4150static void 4734static void
… …
4198 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
4199} 4783}
4200#endif 4784#endif
4201 4785
4202void 4786void
4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4204{ 4788{
4205 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
4206 return; 4790 return;
4207 4791
4208 { 4792 {
… …
4229 4813
4230 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
4231} 4815}
4232 4816
4233void 4817void
4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4235{ 4819{
4236 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
4237 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
4238 return; 4822 return;
4239 4823
… …
4249} 4833}
4250#endif 4834#endif
4251 4835
4252#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
4253void 4837void
4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4255{ 4839{
4256 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
4257 return; 4841 return;
4258 4842
4259 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
… …
4264 4848
4265 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
4266} 4850}
4267 4851
4268void 4852void
4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4270{ 4854{
4271 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
4272 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
4273 return; 4857 return;
4274 4858
… …
4287} 4871}
4288#endif 4872#endif
4289 4873
4290#if EV_CLEANUP_ENABLE 4874#if EV_CLEANUP_ENABLE
4291void 4875void
4292ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4293{ 4877{
4294 if (expect_false (ev_is_active (w))) 4878 if (expect_false (ev_is_active (w)))
4295 return; 4879 return;
4296 4880
4297 EV_FREQUENT_CHECK; 4881 EV_FREQUENT_CHECK;
… …
4304 ev_unref (EV_A); 4888 ev_unref (EV_A);
4305 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4306} 4890}
4307 4891
4308void 4892void
4309ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4310{ 4894{
4311 clear_pending (EV_A_ (W)w); 4895 clear_pending (EV_A_ (W)w);
4312 if (expect_false (!ev_is_active (w))) 4896 if (expect_false (!ev_is_active (w)))
4313 return; 4897 return;
4314 4898
… …
4328} 4912}
4329#endif 4913#endif
4330 4914
4331#if EV_ASYNC_ENABLE 4915#if EV_ASYNC_ENABLE
4332void 4916void
4333ev_async_start (EV_P_ ev_async *w) EV_THROW 4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4334{ 4918{
4335 if (expect_false (ev_is_active (w))) 4919 if (expect_false (ev_is_active (w)))
4336 return; 4920 return;
4337 4921
4338 w->sent = 0; 4922 w->sent = 0;
… …
4347 4931
4348 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
4349} 4933}
4350 4934
4351void 4935void
4352ev_async_stop (EV_P_ ev_async *w) EV_THROW 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4353{ 4937{
4354 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
4355 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
4356 return; 4940 return;
4357 4941
… …
4368 4952
4369 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
4370} 4954}
4371 4955
4372void 4956void
4373ev_async_send (EV_P_ ev_async *w) EV_THROW 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4374{ 4958{
4375 w->sent = 1; 4959 w->sent = 1;
4376 evpipe_write (EV_A_ &async_pending); 4960 evpipe_write (EV_A_ &async_pending);
4377} 4961}
4378#endif 4962#endif
… …
4415 4999
4416 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));
4417} 5001}
4418 5002
4419void 5003void
4420ev_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
4421{ 5005{
4422 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));
4423 5007
4424 if (expect_false (!once)) 5008 if (expect_false (!once))
4425 { 5009 {
… …
4446} 5030}
4447 5031
4448/*****************************************************************************/ 5032/*****************************************************************************/
4449 5033
4450#if EV_WALK_ENABLE 5034#if EV_WALK_ENABLE
4451void ecb_cold 5035ecb_cold
5036void
4452ev_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
4453{ 5038{
4454 int i, j; 5039 int i, j;
4455 ev_watcher_list *wl, *wn; 5040 ev_watcher_list *wl, *wn;
4456 5041
4457 if (types & (EV_IO | EV_EMBED)) 5042 if (types & (EV_IO | EV_EMBED))

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