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Comparing libev/ev.c (file contents):
Revision 1.447 by root, Tue Jun 19 12:29:43 2012 UTC vs.
Revision 1.489 by root, Sat Dec 29 14:23:20 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_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
565 638
566/*****************************************************************************/ 639/*****************************************************************************/
567 640
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 641/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* 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 */
… …
572 #define ECB_NO_SMP 1 645 #define ECB_NO_SMP 1
573#endif 646#endif
574 647
575#if ECB_NO_SMP 648#if ECB_NO_SMP
576 #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 */
577#endif 659#endif
578 660
579#ifndef ECB_MEMORY_FENCE 661#ifndef ECB_MEMORY_FENCE
580 #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
581 #if __i386 || __i386__ 663 #if __i386 || __i386__
582 #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")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 665 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 667 #elif ECB_GCC_AMD64
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 671 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #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 */
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 680 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 681 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
682 || defined __ARM_ARCH_6T2__
593 #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")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 684 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 685 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 686 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__ 687 #elif __aarch64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
689 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
598 #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")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__ 693 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #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. */
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
605 #elif defined __alpha__ 699 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__ 701 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 703 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__ 704 #elif defined __ia64__
611 #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")
612 #endif 712 #endif
613 #endif 713 #endif
614#endif 714#endif
615 715
616#ifndef ECB_MEMORY_FENCE 716#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7) 717 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */ 718 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 719 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic) 720 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
721 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
722
723 #elif ECB_CLANG_EXTENSION(c_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */ 724 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #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
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 729 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #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()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 737 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 738 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 739 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #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 */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 741 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
649 /* any fence other than seq_cst, which isn't very efficient for us. */ 761 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */ 762 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */ 763 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */ 764 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */ 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 */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 768 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif 769 #endif
656#endif 770#endif
657 771
658#ifndef ECB_MEMORY_FENCE 772#ifndef ECB_MEMORY_FENCE
… …
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 795 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif 796#endif
683 797
684/*****************************************************************************/ 798/*****************************************************************************/
685 799
686#if __cplusplus 800#if ECB_CPP
687 #define ecb_inline static inline 801 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5) 802#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__ 803 #define ecb_inline static __inline__
690#elif ECB_C99 804#elif ECB_C99
691 #define ecb_inline static inline 805 #define ecb_inline static inline
… …
705 819
706#define ECB_CONCAT_(a, b) a ## b 820#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 821#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a 822#define ECB_STRINGIFY_(a) # a
709#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))
710 825
711#define ecb_function_ ecb_inline 826#define ecb_function_ ecb_inline
712 827
713#if ECB_GCC_VERSION(3,1) 828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
714 #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)
715 #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)
716 #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)
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 851 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else 852#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality) 853 #define ecb_prefetch(addr,rw,locality)
723#endif 854#endif
724 855
725/* no emulation for ecb_decltype */ 856/* no emulation for ecb_decltype */
726#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; };
727 #define ecb_decltype(x) __decltype(x) 860 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728#elif ECB_GCC_VERSION(3,0) 861#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
729 #define ecb_decltype(x) __typeof(x) 862 #define ecb_decltype(x) __typeof__ (x)
730#endif 863#endif
731 864
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
732#define ecb_noinline ecb_attribute ((__noinline__)) 882 #define ecb_noinline ecb_attribute ((__noinline__))
883#endif
884
733#define ecb_unused ecb_attribute ((__unused__)) 885#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__)) 886#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__)) 887#define ecb_pure ecb_attribute ((__pure__))
736 888
737#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 */
738 #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)
739#else 897#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__)) 898 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif 899#endif
742 900
743#if ECB_GCC_VERSION(4,3) 901#if ECB_GCC_VERSION(4,3)
… …
758/* for compatibility to the rest of the world */ 916/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr) 917#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr) 918#define ecb_unlikely(expr) ecb_expect_false (expr)
761 919
762/* count trailing zero bits and count # of one bits */ 920/* count trailing zero bits and count # of one bits */
763#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))
764 /* 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 */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 926 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 927 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x) 928 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x) 929 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x) 930 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */ 931 /* no popcountll */
771#else 932#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 933 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773 ecb_function_ int 934 ecb_function_ ecb_const int
774 ecb_ctz32 (uint32_t x) 935 ecb_ctz32 (uint32_t x)
775 { 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
776 int r = 0; 942 int r = 0;
777 943
778 x &= ~x + 1; /* this isolates the lowest bit */ 944 x &= ~x + 1; /* this isolates the lowest bit */
779 945
780#if ECB_branchless_on_i386 946#if ECB_branchless_on_i386
… …
790 if (x & 0xff00ff00) r += 8; 956 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16; 957 if (x & 0xffff0000) r += 16;
792#endif 958#endif
793 959
794 return r; 960 return r;
961#endif
795 } 962 }
796 963
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 964 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798 ecb_function_ int 965 ecb_function_ ecb_const int
799 ecb_ctz64 (uint64_t x) 966 ecb_ctz64 (uint64_t x)
800 { 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
801 int shift = x & 0xffffffffU ? 0 : 32; 973 int shift = x & 0xffffffff ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift; 974 return ecb_ctz32 (x >> shift) + shift;
975#endif
803 } 976 }
804 977
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 978 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806 ecb_function_ int 979 ecb_function_ ecb_const int
807 ecb_popcount32 (uint32_t x) 980 ecb_popcount32 (uint32_t x)
808 { 981 {
809 x -= (x >> 1) & 0x55555555; 982 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 983 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f; 984 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101; 985 x *= 0x01010101;
813 986
814 return x >> 24; 987 return x >> 24;
815 } 988 }
816 989
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 990 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818 ecb_function_ int ecb_ld32 (uint32_t x) 991 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819 { 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
820 int r = 0; 998 int r = 0;
821 999
822 if (x >> 16) { x >>= 16; r += 16; } 1000 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; } 1001 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; } 1002 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; } 1003 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; } 1004 if (x >> 1) { r += 1; }
827 1005
828 return r; 1006 return r;
1007#endif
829 } 1008 }
830 1009
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1010 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832 ecb_function_ int ecb_ld64 (uint64_t x) 1011 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833 { 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
834 int r = 0; 1018 int r = 0;
835 1019
836 if (x >> 32) { x >>= 32; r += 32; } 1020 if (x >> 32) { x >>= 32; r += 32; }
837 1021
838 return r + ecb_ld32 (x); 1022 return r + ecb_ld32 (x);
1023#endif
839 } 1024 }
840#endif 1025#endif
841 1026
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1027ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
843ecb_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)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1029ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
845ecb_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)); }
846 1031
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1032ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1033ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849{ 1034{
850 return ( (x * 0x0802U & 0x22110U) 1035 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1036 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852} 1037}
853 1038
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1039ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1040ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856{ 1041{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1042 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1043 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1044 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8); 1045 x = ( x >> 8 ) | ( x << 8);
861 1046
862 return x; 1047 return x;
863} 1048}
864 1049
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1050ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1051ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867{ 1052{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1053 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1054 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1055 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1056 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
874 return x; 1059 return x;
875} 1060}
876 1061
877/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1062/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */ 1063/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1064ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880ecb_function_ int 1065ecb_function_ ecb_const int
881ecb_popcount64 (uint64_t x) 1066ecb_popcount64 (uint64_t x)
882{ 1067{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1068 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884} 1069}
885 1070
886ecb_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);
887ecb_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);
888ecb_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);
889ecb_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);
890ecb_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);
891ecb_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);
892ecb_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);
893ecb_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);
894 1079
895ecb_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); }
896ecb_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); }
897ecb_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); }
898ecb_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); }
899ecb_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); }
900ecb_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); }
901ecb_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); }
902ecb_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); }
903 1088
904#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
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1093 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1094 #endif
906 #define ecb_bswap32(x) __builtin_bswap32 (x) 1095 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #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)))
908#else 1102#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1103 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910 ecb_function_ uint16_t 1104 ecb_function_ ecb_const uint16_t
911 ecb_bswap16 (uint16_t x) 1105 ecb_bswap16 (uint16_t x)
912 { 1106 {
913 return ecb_rotl16 (x, 8); 1107 return ecb_rotl16 (x, 8);
914 } 1108 }
915 1109
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1110 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917 ecb_function_ uint32_t 1111 ecb_function_ ecb_const uint32_t
918 ecb_bswap32 (uint32_t x) 1112 ecb_bswap32 (uint32_t x)
919 { 1113 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1114 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 } 1115 }
922 1116
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1117 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924 ecb_function_ uint64_t 1118 ecb_function_ ecb_const uint64_t
925 ecb_bswap64 (uint64_t x) 1119 ecb_bswap64 (uint64_t x)
926 { 1120 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1121 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 } 1122 }
929#endif 1123#endif
930 1124
931#if ECB_GCC_VERSION(4,5) 1125#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
932 #define ecb_unreachable() __builtin_unreachable () 1126 #define ecb_unreachable() __builtin_unreachable ()
933#else 1127#else
934 /* 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 :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1129 ecb_inline ecb_noreturn void ecb_unreachable (void);
936 ecb_inline void ecb_unreachable (void) { } 1130 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937#endif 1131#endif
938 1132
939/* try to tell the compiler that some condition is definitely true */ 1133/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1134#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941 1135
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1136ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
943ecb_inline unsigned char 1137ecb_inline ecb_const uint32_t
944ecb_byteorder_helper (void) 1138ecb_byteorder_helper (void)
945{ 1139{
946 const uint32_t u = 0x11223344; 1140 /* the union code still generates code under pressure in gcc, */
947 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
948} 1162}
949 1163
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1164ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951ecb_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; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1166ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953ecb_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; }
954 1168
955#if ECB_GCC_VERSION(3,0) || ECB_C99 1169#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #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))
957#else 1171#else
958 #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)))
959#endif 1173#endif
960 1174
961#if __cplusplus 1175#if ECB_CPP
962 template<typename T> 1176 template<typename T>
963 static inline T ecb_div_rd (T val, T div) 1177 static inline T ecb_div_rd (T val, T div)
964 { 1178 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1179 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 } 1180 }
… …
983 } 1197 }
984#else 1198#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1199 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif 1200#endif
987 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
988#endif 1507#endif
989 1508
990/* ECB.H END */ 1509/* ECB.H END */
991 1510
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1511#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
1013#define inline_size ecb_inline 1532#define inline_size ecb_inline
1014 1533
1015#if EV_FEATURE_CODE 1534#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline 1535# define inline_speed ecb_inline
1017#else 1536#else
1018# define inline_speed static noinline 1537# define inline_speed noinline static
1019#endif 1538#endif
1020 1539
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1540#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022 1541
1023#if EV_MINPRI == EV_MAXPRI 1542#if EV_MINPRI == EV_MAXPRI
… …
1070#else 1589#else
1071 1590
1072#include <float.h> 1591#include <float.h>
1073 1592
1074/* a floor() replacement function, should be independent of ev_tstamp type */ 1593/* a floor() replacement function, should be independent of ev_tstamp type */
1594noinline
1075static ev_tstamp noinline 1595static ev_tstamp
1076ev_floor (ev_tstamp v) 1596ev_floor (ev_tstamp v)
1077{ 1597{
1078 /* the choice of shift factor is not terribly important */ 1598 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1599#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1600 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1112 1632
1113#ifdef __linux 1633#ifdef __linux
1114# include <sys/utsname.h> 1634# include <sys/utsname.h>
1115#endif 1635#endif
1116 1636
1117static unsigned int noinline ecb_cold 1637noinline ecb_cold
1638static unsigned int
1118ev_linux_version (void) 1639ev_linux_version (void)
1119{ 1640{
1120#ifdef __linux 1641#ifdef __linux
1121 unsigned int v = 0; 1642 unsigned int v = 0;
1122 struct utsname buf; 1643 struct utsname buf;
… …
1151} 1672}
1152 1673
1153/*****************************************************************************/ 1674/*****************************************************************************/
1154 1675
1155#if EV_AVOID_STDIO 1676#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1677noinline ecb_cold
1678static void
1157ev_printerr (const char *msg) 1679ev_printerr (const char *msg)
1158{ 1680{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1681 write (STDERR_FILENO, msg, strlen (msg));
1160} 1682}
1161#endif 1683#endif
1162 1684
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1685static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1164 1686
1165void ecb_cold 1687ecb_cold
1688void
1166ev_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
1167{ 1690{
1168 syserr_cb = cb; 1691 syserr_cb = cb;
1169} 1692}
1170 1693
1171static void noinline ecb_cold 1694noinline ecb_cold
1695static void
1172ev_syserr (const char *msg) 1696ev_syserr (const char *msg)
1173{ 1697{
1174 if (!msg) 1698 if (!msg)
1175 msg = "(libev) system error"; 1699 msg = "(libev) system error";
1176 1700
… …
1189 abort (); 1713 abort ();
1190 } 1714 }
1191} 1715}
1192 1716
1193static void * 1717static void *
1194ev_realloc_emul (void *ptr, long size) EV_THROW 1718ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1195{ 1719{
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.
1199 * recently, also (at least) fedora and debian started breaking it, 1723 * recently, also (at least) fedora and debian started breaking it,
… …
1205 1729
1206 free (ptr); 1730 free (ptr);
1207 return 0; 1731 return 0;
1208} 1732}
1209 1733
1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1734static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1211 1735
1212void ecb_cold 1736ecb_cold
1737void
1213ev_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
1214{ 1739{
1215 alloc = cb; 1740 alloc = cb;
1216} 1741}
1217 1742
1218inline_speed void * 1743inline_speed void *
… …
1335 1860
1336/*****************************************************************************/ 1861/*****************************************************************************/
1337 1862
1338#ifndef EV_HAVE_EV_TIME 1863#ifndef EV_HAVE_EV_TIME
1339ev_tstamp 1864ev_tstamp
1340ev_time (void) EV_THROW 1865ev_time (void) EV_NOEXCEPT
1341{ 1866{
1342#if EV_USE_REALTIME 1867#if EV_USE_REALTIME
1343 if (expect_true (have_realtime)) 1868 if (expect_true (have_realtime))
1344 { 1869 {
1345 struct timespec ts; 1870 struct timespec ts;
… …
1369 return ev_time (); 1894 return ev_time ();
1370} 1895}
1371 1896
1372#if EV_MULTIPLICITY 1897#if EV_MULTIPLICITY
1373ev_tstamp 1898ev_tstamp
1374ev_now (EV_P) EV_THROW 1899ev_now (EV_P) EV_NOEXCEPT
1375{ 1900{
1376 return ev_rt_now; 1901 return ev_rt_now;
1377} 1902}
1378#endif 1903#endif
1379 1904
1380void 1905void
1381ev_sleep (ev_tstamp delay) EV_THROW 1906ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1382{ 1907{
1383 if (delay > 0.) 1908 if (delay > 0.)
1384 { 1909 {
1385#if EV_USE_NANOSLEEP 1910#if EV_USE_NANOSLEEP
1386 struct timespec ts; 1911 struct timespec ts;
1387 1912
1388 EV_TS_SET (ts, delay); 1913 EV_TS_SET (ts, delay);
1389 nanosleep (&ts, 0); 1914 nanosleep (&ts, 0);
1390#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) */
1391 Sleep ((unsigned long)(delay * 1e3)); 1918 Sleep ((unsigned long)(delay * 1e3));
1392#else 1919#else
1393 struct timeval tv; 1920 struct timeval tv;
1394 1921
1395 /* 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 */
… …
1426 } 1953 }
1427 1954
1428 return ncur; 1955 return ncur;
1429} 1956}
1430 1957
1431static void * noinline ecb_cold 1958noinline ecb_cold
1959static void *
1432array_realloc (int elem, void *base, int *cur, int cnt) 1960array_realloc (int elem, void *base, int *cur, int cnt)
1433{ 1961{
1434 *cur = array_nextsize (elem, *cur, cnt); 1962 *cur = array_nextsize (elem, *cur, cnt);
1435 return ev_realloc (base, elem * *cur); 1963 return ev_realloc (base, elem * *cur);
1436} 1964}
… …
1439 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1967 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1440 1968
1441#define array_needsize(type,base,cur,cnt,init) \ 1969#define array_needsize(type,base,cur,cnt,init) \
1442 if (expect_false ((cnt) > (cur))) \ 1970 if (expect_false ((cnt) > (cur))) \
1443 { \ 1971 { \
1444 int ecb_unused ocur_ = (cur); \ 1972 ecb_unused int ocur_ = (cur); \
1445 (base) = (type *)array_realloc \ 1973 (base) = (type *)array_realloc \
1446 (sizeof (type), (base), &(cur), (cnt)); \ 1974 (sizeof (type), (base), &(cur), (cnt)); \
1447 init ((base) + (ocur_), (cur) - ocur_); \ 1975 init ((base) + (ocur_), (cur) - ocur_); \
1448 } 1976 }
1449 1977
… …
1461 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
1462 1990
1463/*****************************************************************************/ 1991/*****************************************************************************/
1464 1992
1465/* dummy callback for pending events */ 1993/* dummy callback for pending events */
1466static void noinline 1994noinline
1995static void
1467pendingcb (EV_P_ ev_prepare *w, int revents) 1996pendingcb (EV_P_ ev_prepare *w, int revents)
1468{ 1997{
1469} 1998}
1470 1999
1471void noinline 2000noinline
2001void
1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2002ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1473{ 2003{
1474 W w_ = (W)w; 2004 W w_ = (W)w;
1475 int pri = ABSPRI (w_); 2005 int pri = ABSPRI (w_);
1476 2006
1477 if (expect_false (w_->pending)) 2007 if (expect_false (w_->pending))
… …
1538 if (expect_true (!anfd->reify)) 2068 if (expect_true (!anfd->reify))
1539 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1540} 2070}
1541 2071
1542void 2072void
1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2073ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1544{ 2074{
1545 if (fd >= 0 && fd < anfdmax) 2075 if (fd >= 0 && fd < anfdmax)
1546 fd_event_nocheck (EV_A_ fd, revents); 2076 fd_event_nocheck (EV_A_ fd, revents);
1547} 2077}
1548 2078
… …
1606 2136
1607 fdchangecnt = 0; 2137 fdchangecnt = 0;
1608} 2138}
1609 2139
1610/* something about the given fd changed */ 2140/* something about the given fd changed */
1611inline_size void 2141inline_size
2142void
1612fd_change (EV_P_ int fd, int flags) 2143fd_change (EV_P_ int fd, int flags)
1613{ 2144{
1614 unsigned char reify = anfds [fd].reify; 2145 unsigned char reify = anfds [fd].reify;
1615 anfds [fd].reify |= flags; 2146 anfds [fd].reify |= flags;
1616 2147
… …
1621 fdchanges [fdchangecnt - 1] = fd; 2152 fdchanges [fdchangecnt - 1] = fd;
1622 } 2153 }
1623} 2154}
1624 2155
1625/* 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 */
1626inline_speed void ecb_cold 2157inline_speed ecb_cold void
1627fd_kill (EV_P_ int fd) 2158fd_kill (EV_P_ int fd)
1628{ 2159{
1629 ev_io *w; 2160 ev_io *w;
1630 2161
1631 while ((w = (ev_io *)anfds [fd].head)) 2162 while ((w = (ev_io *)anfds [fd].head))
… …
1634 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);
1635 } 2166 }
1636} 2167}
1637 2168
1638/* check whether the given fd is actually valid, for error recovery */ 2169/* check whether the given fd is actually valid, for error recovery */
1639inline_size int ecb_cold 2170inline_size ecb_cold int
1640fd_valid (int fd) 2171fd_valid (int fd)
1641{ 2172{
1642#ifdef _WIN32 2173#ifdef _WIN32
1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2174 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1644#else 2175#else
1645 return fcntl (fd, F_GETFD) != -1; 2176 return fcntl (fd, F_GETFD) != -1;
1646#endif 2177#endif
1647} 2178}
1648 2179
1649/* called on EBADF to verify fds */ 2180/* called on EBADF to verify fds */
1650static void noinline ecb_cold 2181noinline ecb_cold
2182static void
1651fd_ebadf (EV_P) 2183fd_ebadf (EV_P)
1652{ 2184{
1653 int fd; 2185 int fd;
1654 2186
1655 for (fd = 0; fd < anfdmax; ++fd) 2187 for (fd = 0; fd < anfdmax; ++fd)
… …
1657 if (!fd_valid (fd) && errno == EBADF) 2189 if (!fd_valid (fd) && errno == EBADF)
1658 fd_kill (EV_A_ fd); 2190 fd_kill (EV_A_ fd);
1659} 2191}
1660 2192
1661/* 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 */
1662static void noinline ecb_cold 2194noinline ecb_cold
2195static void
1663fd_enomem (EV_P) 2196fd_enomem (EV_P)
1664{ 2197{
1665 int fd; 2198 int fd;
1666 2199
1667 for (fd = anfdmax; fd--; ) 2200 for (fd = anfdmax; fd--; )
… …
1671 break; 2204 break;
1672 } 2205 }
1673} 2206}
1674 2207
1675/* 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 */
1676static void noinline 2209noinline
2210static void
1677fd_rearm_all (EV_P) 2211fd_rearm_all (EV_P)
1678{ 2212{
1679 int fd; 2213 int fd;
1680 2214
1681 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1862 2396
1863/*****************************************************************************/ 2397/*****************************************************************************/
1864 2398
1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1866 2400
1867static void noinline ecb_cold 2401noinline ecb_cold
2402static void
1868evpipe_init (EV_P) 2403evpipe_init (EV_P)
1869{ 2404{
1870 if (!ev_is_active (&pipe_w)) 2405 if (!ev_is_active (&pipe_w))
1871 { 2406 {
2407 int fds [2];
2408
1872# if EV_USE_EVENTFD 2409# if EV_USE_EVENTFD
2410 fds [0] = -1;
1873 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2411 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1874 if (evfd < 0 && errno == EINVAL) 2412 if (fds [1] < 0 && errno == EINVAL)
1875 evfd = eventfd (0, 0); 2413 fds [1] = eventfd (0, 0);
1876 2414
1877 if (evfd >= 0) 2415 if (fds [1] < 0)
1878 {
1879 evpipe [0] = -1;
1880 fd_intern (evfd); /* doing it twice doesn't hurt */
1881 ev_io_set (&pipe_w, evfd, EV_READ);
1882 }
1883 else
1884# endif 2416# endif
1885 { 2417 {
1886 while (pipe (evpipe)) 2418 while (pipe (fds))
1887 ev_syserr ("(libev) error creating signal/async pipe"); 2419 ev_syserr ("(libev) error creating signal/async pipe");
1888 2420
1889 fd_intern (evpipe [0]); 2421 fd_intern (fds [0]);
1890 fd_intern (evpipe [1]);
1891 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1892 } 2422 }
1893 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);
1894 ev_io_start (EV_A_ &pipe_w); 2442 ev_io_start (EV_A_ &pipe_w);
1895 ev_unref (EV_A); /* watcher should not keep loop alive */ 2443 ev_unref (EV_A); /* watcher should not keep loop alive */
1896 } 2444 }
1897} 2445}
1898 2446
… …
1919 ECB_MEMORY_FENCE_RELEASE; 2467 ECB_MEMORY_FENCE_RELEASE;
1920 2468
1921 old_errno = errno; /* save errno because write will clobber it */ 2469 old_errno = errno; /* save errno because write will clobber it */
1922 2470
1923#if EV_USE_EVENTFD 2471#if EV_USE_EVENTFD
1924 if (evfd >= 0) 2472 if (evpipe [0] < 0)
1925 { 2473 {
1926 uint64_t counter = 1; 2474 uint64_t counter = 1;
1927 write (evfd, &counter, sizeof (uint64_t)); 2475 write (evpipe [1], &counter, sizeof (uint64_t));
1928 } 2476 }
1929 else 2477 else
1930#endif 2478#endif
1931 { 2479 {
1932#ifdef _WIN32 2480#ifdef _WIN32
1933 WSABUF buf; 2481 WSABUF buf;
1934 DWORD sent; 2482 DWORD sent;
1935 buf.buf = &buf; 2483 buf.buf = (char *)&buf;
1936 buf.len = 1; 2484 buf.len = 1;
1937 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);
1938#else 2486#else
1939 write (evpipe [1], &(evpipe [1]), 1); 2487 write (evpipe [1], &(evpipe [1]), 1);
1940#endif 2488#endif
… …
1952 int i; 2500 int i;
1953 2501
1954 if (revents & EV_READ) 2502 if (revents & EV_READ)
1955 { 2503 {
1956#if EV_USE_EVENTFD 2504#if EV_USE_EVENTFD
1957 if (evfd >= 0) 2505 if (evpipe [0] < 0)
1958 { 2506 {
1959 uint64_t counter; 2507 uint64_t counter;
1960 read (evfd, &counter, sizeof (uint64_t)); 2508 read (evpipe [1], &counter, sizeof (uint64_t));
1961 } 2509 }
1962 else 2510 else
1963#endif 2511#endif
1964 { 2512 {
1965 char dummy[4]; 2513 char dummy[4];
… …
2012} 2560}
2013 2561
2014/*****************************************************************************/ 2562/*****************************************************************************/
2015 2563
2016void 2564void
2017ev_feed_signal (int signum) EV_THROW 2565ev_feed_signal (int signum) EV_NOEXCEPT
2018{ 2566{
2019#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
2568 EV_P;
2569 ECB_MEMORY_FENCE_ACQUIRE;
2020 EV_P = signals [signum - 1].loop; 2570 EV_A = signals [signum - 1].loop;
2021 2571
2022 if (!EV_A) 2572 if (!EV_A)
2023 return; 2573 return;
2024#endif 2574#endif
2025 2575
2026 if (!ev_active (&pipe_w))
2027 return;
2028
2029 signals [signum - 1].pending = 1; 2576 signals [signum - 1].pending = 1;
2030 evpipe_write (EV_A_ &sig_pending); 2577 evpipe_write (EV_A_ &sig_pending);
2031} 2578}
2032 2579
2033static void 2580static void
… …
2038#endif 2585#endif
2039 2586
2040 ev_feed_signal (signum); 2587 ev_feed_signal (signum);
2041} 2588}
2042 2589
2043void noinline 2590noinline
2591void
2044ev_feed_signal_event (EV_P_ int signum) EV_THROW 2592ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2045{ 2593{
2046 WL w; 2594 WL w;
2047 2595
2048 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2596 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2049 return; 2597 return;
… …
2165#endif 2713#endif
2166#if EV_USE_SELECT 2714#if EV_USE_SELECT
2167# include "ev_select.c" 2715# include "ev_select.c"
2168#endif 2716#endif
2169 2717
2170int ecb_cold 2718ecb_cold int
2171ev_version_major (void) EV_THROW 2719ev_version_major (void) EV_NOEXCEPT
2172{ 2720{
2173 return EV_VERSION_MAJOR; 2721 return EV_VERSION_MAJOR;
2174} 2722}
2175 2723
2176int ecb_cold 2724ecb_cold int
2177ev_version_minor (void) EV_THROW 2725ev_version_minor (void) EV_NOEXCEPT
2178{ 2726{
2179 return EV_VERSION_MINOR; 2727 return EV_VERSION_MINOR;
2180} 2728}
2181 2729
2182/* 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 */
2183int inline_size ecb_cold 2731inline_size ecb_cold int
2184enable_secure (void) 2732enable_secure (void)
2185{ 2733{
2186#ifdef _WIN32 2734#ifdef _WIN32
2187 return 0; 2735 return 0;
2188#else 2736#else
2189 return getuid () != geteuid () 2737 return getuid () != geteuid ()
2190 || getgid () != getegid (); 2738 || getgid () != getegid ();
2191#endif 2739#endif
2192} 2740}
2193 2741
2194unsigned int ecb_cold 2742ecb_cold
2743unsigned int
2195ev_supported_backends (void) EV_THROW 2744ev_supported_backends (void) EV_NOEXCEPT
2196{ 2745{
2197 unsigned int flags = 0; 2746 unsigned int flags = 0;
2198 2747
2199 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2748 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2200 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2749 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2203 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2752 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2204 2753
2205 return flags; 2754 return flags;
2206} 2755}
2207 2756
2208unsigned int ecb_cold 2757ecb_cold
2758unsigned int
2209ev_recommended_backends (void) EV_THROW 2759ev_recommended_backends (void) EV_NOEXCEPT
2210{ 2760{
2211 unsigned int flags = ev_supported_backends (); 2761 unsigned int flags = ev_supported_backends ();
2212 2762
2213#ifndef __NetBSD__ 2763#ifndef __NetBSD__
2214 /* kqueue is borked on everything but netbsd apparently */ 2764 /* kqueue is borked on everything but netbsd apparently */
… …
2225#endif 2775#endif
2226 2776
2227 return flags; 2777 return flags;
2228} 2778}
2229 2779
2230unsigned int ecb_cold 2780ecb_cold
2781unsigned int
2231ev_embeddable_backends (void) EV_THROW 2782ev_embeddable_backends (void) EV_NOEXCEPT
2232{ 2783{
2233 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2784 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2234 2785
2235 /* 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 */
2236 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 */
… …
2238 2789
2239 return flags; 2790 return flags;
2240} 2791}
2241 2792
2242unsigned int 2793unsigned int
2243ev_backend (EV_P) EV_THROW 2794ev_backend (EV_P) EV_NOEXCEPT
2244{ 2795{
2245 return backend; 2796 return backend;
2246} 2797}
2247 2798
2248#if EV_FEATURE_API 2799#if EV_FEATURE_API
2249unsigned int 2800unsigned int
2250ev_iteration (EV_P) EV_THROW 2801ev_iteration (EV_P) EV_NOEXCEPT
2251{ 2802{
2252 return loop_count; 2803 return loop_count;
2253} 2804}
2254 2805
2255unsigned int 2806unsigned int
2256ev_depth (EV_P) EV_THROW 2807ev_depth (EV_P) EV_NOEXCEPT
2257{ 2808{
2258 return loop_depth; 2809 return loop_depth;
2259} 2810}
2260 2811
2261void 2812void
2262ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2813ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2263{ 2814{
2264 io_blocktime = interval; 2815 io_blocktime = interval;
2265} 2816}
2266 2817
2267void 2818void
2268ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2819ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2269{ 2820{
2270 timeout_blocktime = interval; 2821 timeout_blocktime = interval;
2271} 2822}
2272 2823
2273void 2824void
2274ev_set_userdata (EV_P_ void *data) EV_THROW 2825ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2275{ 2826{
2276 userdata = data; 2827 userdata = data;
2277} 2828}
2278 2829
2279void * 2830void *
2280ev_userdata (EV_P) EV_THROW 2831ev_userdata (EV_P) EV_NOEXCEPT
2281{ 2832{
2282 return userdata; 2833 return userdata;
2283} 2834}
2284 2835
2285void 2836void
2286ev_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
2287{ 2838{
2288 invoke_cb = invoke_pending_cb; 2839 invoke_cb = invoke_pending_cb;
2289} 2840}
2290 2841
2291void 2842void
2292ev_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
2293{ 2844{
2294 release_cb = release; 2845 release_cb = release;
2295 acquire_cb = acquire; 2846 acquire_cb = acquire;
2296} 2847}
2297#endif 2848#endif
2298 2849
2299/* initialise a loop structure, must be zero-initialised */ 2850/* initialise a loop structure, must be zero-initialised */
2300static void noinline ecb_cold 2851noinline ecb_cold
2852static void
2301loop_init (EV_P_ unsigned int flags) EV_THROW 2853loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2302{ 2854{
2303 if (!backend) 2855 if (!backend)
2304 { 2856 {
2305 origflags = flags; 2857 origflags = flags;
2306 2858
… …
2351#if EV_ASYNC_ENABLE 2903#if EV_ASYNC_ENABLE
2352 async_pending = 0; 2904 async_pending = 0;
2353#endif 2905#endif
2354 pipe_write_skipped = 0; 2906 pipe_write_skipped = 0;
2355 pipe_write_wanted = 0; 2907 pipe_write_wanted = 0;
2908 evpipe [0] = -1;
2909 evpipe [1] = -1;
2356#if EV_USE_INOTIFY 2910#if EV_USE_INOTIFY
2357 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2911 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2358#endif 2912#endif
2359#if EV_USE_SIGNALFD 2913#if EV_USE_SIGNALFD
2360 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2914 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2390#endif 2944#endif
2391 } 2945 }
2392} 2946}
2393 2947
2394/* free up a loop structure */ 2948/* free up a loop structure */
2395void ecb_cold 2949ecb_cold
2950void
2396ev_loop_destroy (EV_P) 2951ev_loop_destroy (EV_P)
2397{ 2952{
2398 int i; 2953 int i;
2399 2954
2400#if EV_MULTIPLICITY 2955#if EV_MULTIPLICITY
… …
2423 if (ev_is_active (&pipe_w)) 2978 if (ev_is_active (&pipe_w))
2424 { 2979 {
2425 /*ev_ref (EV_A);*/ 2980 /*ev_ref (EV_A);*/
2426 /*ev_io_stop (EV_A_ &pipe_w);*/ 2981 /*ev_io_stop (EV_A_ &pipe_w);*/
2427 2982
2428#if EV_USE_EVENTFD
2429 if (evfd >= 0)
2430 close (evfd);
2431#endif
2432
2433 if (evpipe [0] >= 0)
2434 {
2435 EV_WIN32_CLOSE_FD (evpipe [0]); 2983 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2436 EV_WIN32_CLOSE_FD (evpipe [1]); 2984 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2437 }
2438 } 2985 }
2439 2986
2440#if EV_USE_SIGNALFD 2987#if EV_USE_SIGNALFD
2441 if (ev_is_active (&sigfd_w)) 2988 if (ev_is_active (&sigfd_w))
2442 close (sigfd); 2989 close (sigfd);
… …
2528#endif 3075#endif
2529#if EV_USE_INOTIFY 3076#if EV_USE_INOTIFY
2530 infy_fork (EV_A); 3077 infy_fork (EV_A);
2531#endif 3078#endif
2532 3079
3080#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2533 if (ev_is_active (&pipe_w)) 3081 if (ev_is_active (&pipe_w) && postfork != 2)
2534 { 3082 {
2535 /* 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 */
2536 3084
2537 ev_ref (EV_A); 3085 ev_ref (EV_A);
2538 ev_io_stop (EV_A_ &pipe_w); 3086 ev_io_stop (EV_A_ &pipe_w);
2539 3087
2540#if EV_USE_EVENTFD
2541 if (evfd >= 0)
2542 close (evfd);
2543#endif
2544
2545 if (evpipe [0] >= 0) 3088 if (evpipe [0] >= 0)
2546 {
2547 EV_WIN32_CLOSE_FD (evpipe [0]); 3089 EV_WIN32_CLOSE_FD (evpipe [0]);
2548 EV_WIN32_CLOSE_FD (evpipe [1]);
2549 }
2550 3090
2551#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2552 evpipe_init (EV_A); 3091 evpipe_init (EV_A);
2553 /* iterate over everything, in case we missed something before */ 3092 /* iterate over everything, in case we missed something before */
2554 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2555#endif
2556 } 3094 }
3095#endif
2557 3096
2558 postfork = 0; 3097 postfork = 0;
2559} 3098}
2560 3099
2561#if EV_MULTIPLICITY 3100#if EV_MULTIPLICITY
2562 3101
3102ecb_cold
2563struct ev_loop * ecb_cold 3103struct ev_loop *
2564ev_loop_new (unsigned int flags) EV_THROW 3104ev_loop_new (unsigned int flags) EV_NOEXCEPT
2565{ 3105{
2566 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3106 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2567 3107
2568 memset (EV_A, 0, sizeof (struct ev_loop)); 3108 memset (EV_A, 0, sizeof (struct ev_loop));
2569 loop_init (EV_A_ flags); 3109 loop_init (EV_A_ flags);
… …
2576} 3116}
2577 3117
2578#endif /* multiplicity */ 3118#endif /* multiplicity */
2579 3119
2580#if EV_VERIFY 3120#if EV_VERIFY
2581static void noinline ecb_cold 3121noinline ecb_cold
3122static void
2582verify_watcher (EV_P_ W w) 3123verify_watcher (EV_P_ W w)
2583{ 3124{
2584 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));
2585 3126
2586 if (w->pending) 3127 if (w->pending)
2587 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));
2588} 3129}
2589 3130
2590static void noinline ecb_cold 3131noinline ecb_cold
3132static void
2591verify_heap (EV_P_ ANHE *heap, int N) 3133verify_heap (EV_P_ ANHE *heap, int N)
2592{ 3134{
2593 int i; 3135 int i;
2594 3136
2595 for (i = HEAP0; i < N + HEAP0; ++i) 3137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2600 3142
2601 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2602 } 3144 }
2603} 3145}
2604 3146
2605static void noinline ecb_cold 3147noinline ecb_cold
3148static void
2606array_verify (EV_P_ W *ws, int cnt) 3149array_verify (EV_P_ W *ws, int cnt)
2607{ 3150{
2608 while (cnt--) 3151 while (cnt--)
2609 { 3152 {
2610 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2613} 3156}
2614#endif 3157#endif
2615 3158
2616#if EV_FEATURE_API 3159#if EV_FEATURE_API
2617void ecb_cold 3160void ecb_cold
2618ev_verify (EV_P) EV_THROW 3161ev_verify (EV_P) EV_NOEXCEPT
2619{ 3162{
2620#if EV_VERIFY 3163#if EV_VERIFY
2621 int i; 3164 int i;
2622 WL w, w2; 3165 WL w, w2;
2623 3166
… …
2699#endif 3242#endif
2700} 3243}
2701#endif 3244#endif
2702 3245
2703#if EV_MULTIPLICITY 3246#if EV_MULTIPLICITY
3247ecb_cold
2704struct ev_loop * ecb_cold 3248struct ev_loop *
2705#else 3249#else
2706int 3250int
2707#endif 3251#endif
2708ev_default_loop (unsigned int flags) EV_THROW 3252ev_default_loop (unsigned int flags) EV_NOEXCEPT
2709{ 3253{
2710 if (!ev_default_loop_ptr) 3254 if (!ev_default_loop_ptr)
2711 { 3255 {
2712#if EV_MULTIPLICITY 3256#if EV_MULTIPLICITY
2713 EV_P = ev_default_loop_ptr = &default_loop_struct; 3257 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2732 3276
2733 return ev_default_loop_ptr; 3277 return ev_default_loop_ptr;
2734} 3278}
2735 3279
2736void 3280void
2737ev_loop_fork (EV_P) EV_THROW 3281ev_loop_fork (EV_P) EV_NOEXCEPT
2738{ 3282{
2739 postfork = 1; 3283 postfork = 1;
2740} 3284}
2741 3285
2742/*****************************************************************************/ 3286/*****************************************************************************/
… …
2746{ 3290{
2747 EV_CB_INVOKE ((W)w, revents); 3291 EV_CB_INVOKE ((W)w, revents);
2748} 3292}
2749 3293
2750unsigned int 3294unsigned int
2751ev_pending_count (EV_P) EV_THROW 3295ev_pending_count (EV_P) EV_NOEXCEPT
2752{ 3296{
2753 int pri; 3297 int pri;
2754 unsigned int count = 0; 3298 unsigned int count = 0;
2755 3299
2756 for (pri = NUMPRI; pri--; ) 3300 for (pri = NUMPRI; pri--; )
2757 count += pendingcnt [pri]; 3301 count += pendingcnt [pri];
2758 3302
2759 return count; 3303 return count;
2760} 3304}
2761 3305
2762void noinline 3306noinline
3307void
2763ev_invoke_pending (EV_P) 3308ev_invoke_pending (EV_P)
2764{ 3309{
2765 pendingpri = NUMPRI; 3310 pendingpri = NUMPRI;
2766 3311
2767 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3312 do
2768 { 3313 {
2769 --pendingpri; 3314 --pendingpri;
2770 3315
3316 /* pendingpri possibly gets modified in the inner loop */
2771 while (pendingcnt [pendingpri]) 3317 while (pendingcnt [pendingpri])
2772 { 3318 {
2773 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3319 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2774 3320
2775 p->w->pending = 0; 3321 p->w->pending = 0;
2776 EV_CB_INVOKE (p->w, p->events); 3322 EV_CB_INVOKE (p->w, p->events);
2777 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2778 } 3324 }
2779 } 3325 }
3326 while (pendingpri);
2780} 3327}
2781 3328
2782#if EV_IDLE_ENABLE 3329#if EV_IDLE_ENABLE
2783/* make idle watchers pending. this handles the "call-idle */ 3330/* make idle watchers pending. this handles the "call-idle */
2784/* only when higher priorities are idle" logic */ 3331/* only when higher priorities are idle" logic */
… …
2842 } 3389 }
2843} 3390}
2844 3391
2845#if EV_PERIODIC_ENABLE 3392#if EV_PERIODIC_ENABLE
2846 3393
2847static void noinline 3394noinline
3395static void
2848periodic_recalc (EV_P_ ev_periodic *w) 3396periodic_recalc (EV_P_ ev_periodic *w)
2849{ 3397{
2850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3398 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2851 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);
2852 3400
… …
2910 } 3458 }
2911} 3459}
2912 3460
2913/* simply recalculate all periodics */ 3461/* simply recalculate all periodics */
2914/* 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? */
2915static void noinline ecb_cold 3463noinline ecb_cold
3464static void
2916periodics_reschedule (EV_P) 3465periodics_reschedule (EV_P)
2917{ 3466{
2918 int i; 3467 int i;
2919 3468
2920 /* adjust periodics after time jump */ 3469 /* adjust periodics after time jump */
… …
2933 reheap (periodics, periodiccnt); 3482 reheap (periodics, periodiccnt);
2934} 3483}
2935#endif 3484#endif
2936 3485
2937/* adjust all timers by a given offset */ 3486/* adjust all timers by a given offset */
2938static void noinline ecb_cold 3487noinline ecb_cold
3488static void
2939timers_reschedule (EV_P_ ev_tstamp adjust) 3489timers_reschedule (EV_P_ ev_tstamp adjust)
2940{ 3490{
2941 int i; 3491 int i;
2942 3492
2943 for (i = 0; i < timercnt; ++i) 3493 for (i = 0; i < timercnt; ++i)
… …
3190 3740
3191 return activecnt; 3741 return activecnt;
3192} 3742}
3193 3743
3194void 3744void
3195ev_break (EV_P_ int how) EV_THROW 3745ev_break (EV_P_ int how) EV_NOEXCEPT
3196{ 3746{
3197 loop_done = how; 3747 loop_done = how;
3198} 3748}
3199 3749
3200void 3750void
3201ev_ref (EV_P) EV_THROW 3751ev_ref (EV_P) EV_NOEXCEPT
3202{ 3752{
3203 ++activecnt; 3753 ++activecnt;
3204} 3754}
3205 3755
3206void 3756void
3207ev_unref (EV_P) EV_THROW 3757ev_unref (EV_P) EV_NOEXCEPT
3208{ 3758{
3209 --activecnt; 3759 --activecnt;
3210} 3760}
3211 3761
3212void 3762void
3213ev_now_update (EV_P) EV_THROW 3763ev_now_update (EV_P) EV_NOEXCEPT
3214{ 3764{
3215 time_update (EV_A_ 1e100); 3765 time_update (EV_A_ 1e100);
3216} 3766}
3217 3767
3218void 3768void
3219ev_suspend (EV_P) EV_THROW 3769ev_suspend (EV_P) EV_NOEXCEPT
3220{ 3770{
3221 ev_now_update (EV_A); 3771 ev_now_update (EV_A);
3222} 3772}
3223 3773
3224void 3774void
3225ev_resume (EV_P) EV_THROW 3775ev_resume (EV_P) EV_NOEXCEPT
3226{ 3776{
3227 ev_tstamp mn_prev = mn_now; 3777 ev_tstamp mn_prev = mn_now;
3228 3778
3229 ev_now_update (EV_A); 3779 ev_now_update (EV_A);
3230 timers_reschedule (EV_A_ mn_now - mn_prev); 3780 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3269 w->pending = 0; 3819 w->pending = 0;
3270 } 3820 }
3271} 3821}
3272 3822
3273int 3823int
3274ev_clear_pending (EV_P_ void *w) EV_THROW 3824ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3275{ 3825{
3276 W w_ = (W)w; 3826 W w_ = (W)w;
3277 int pending = w_->pending; 3827 int pending = w_->pending;
3278 3828
3279 if (expect_true (pending)) 3829 if (expect_true (pending))
… …
3311 w->active = 0; 3861 w->active = 0;
3312} 3862}
3313 3863
3314/*****************************************************************************/ 3864/*****************************************************************************/
3315 3865
3316void noinline 3866noinline
3867void
3317ev_io_start (EV_P_ ev_io *w) EV_THROW 3868ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3318{ 3869{
3319 int fd = w->fd; 3870 int fd = w->fd;
3320 3871
3321 if (expect_false (ev_is_active (w))) 3872 if (expect_false (ev_is_active (w)))
3322 return; 3873 return;
… …
3337 w->events &= ~EV__IOFDSET; 3888 w->events &= ~EV__IOFDSET;
3338 3889
3339 EV_FREQUENT_CHECK; 3890 EV_FREQUENT_CHECK;
3340} 3891}
3341 3892
3342void noinline 3893noinline
3894void
3343ev_io_stop (EV_P_ ev_io *w) EV_THROW 3895ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3344{ 3896{
3345 clear_pending (EV_A_ (W)w); 3897 clear_pending (EV_A_ (W)w);
3346 if (expect_false (!ev_is_active (w))) 3898 if (expect_false (!ev_is_active (w)))
3347 return; 3899 return;
3348 3900
… …
3356 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3908 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3357 3909
3358 EV_FREQUENT_CHECK; 3910 EV_FREQUENT_CHECK;
3359} 3911}
3360 3912
3361void noinline 3913noinline
3914void
3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3915ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3363{ 3916{
3364 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
3365 return; 3918 return;
3366 3919
3367 ev_at (w) += mn_now; 3920 ev_at (w) += mn_now;
… …
3380 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
3381 3934
3382 /*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));*/
3383} 3936}
3384 3937
3385void noinline 3938noinline
3939void
3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3940ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3387{ 3941{
3388 clear_pending (EV_A_ (W)w); 3942 clear_pending (EV_A_ (W)w);
3389 if (expect_false (!ev_is_active (w))) 3943 if (expect_false (!ev_is_active (w)))
3390 return; 3944 return;
3391 3945
… …
3410 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
3411 3965
3412 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3413} 3967}
3414 3968
3415void noinline 3969noinline
3970void
3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3417{ 3972{
3418 EV_FREQUENT_CHECK; 3973 EV_FREQUENT_CHECK;
3419 3974
3420 clear_pending (EV_A_ (W)w); 3975 clear_pending (EV_A_ (W)w);
3421 3976
… …
3438 3993
3439 EV_FREQUENT_CHECK; 3994 EV_FREQUENT_CHECK;
3440} 3995}
3441 3996
3442ev_tstamp 3997ev_tstamp
3443ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 3998ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3444{ 3999{
3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4000 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3446} 4001}
3447 4002
3448#if EV_PERIODIC_ENABLE 4003#if EV_PERIODIC_ENABLE
3449void noinline 4004noinline
4005void
3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4006ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3451{ 4007{
3452 if (expect_false (ev_is_active (w))) 4008 if (expect_false (ev_is_active (w)))
3453 return; 4009 return;
3454 4010
3455 if (w->reschedule_cb) 4011 if (w->reschedule_cb)
… …
3474 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
3475 4031
3476 /*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));*/
3477} 4033}
3478 4034
3479void noinline 4035noinline
4036void
3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4037ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3481{ 4038{
3482 clear_pending (EV_A_ (W)w); 4039 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4040 if (expect_false (!ev_is_active (w)))
3484 return; 4041 return;
3485 4042
… …
3502 ev_stop (EV_A_ (W)w); 4059 ev_stop (EV_A_ (W)w);
3503 4060
3504 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3505} 4062}
3506 4063
3507void noinline 4064noinline
4065void
3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4066ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3509{ 4067{
3510 /* TODO: use adjustheap and recalculation */ 4068 /* TODO: use adjustheap and recalculation */
3511 ev_periodic_stop (EV_A_ w); 4069 ev_periodic_stop (EV_A_ w);
3512 ev_periodic_start (EV_A_ w); 4070 ev_periodic_start (EV_A_ w);
3513} 4071}
… …
3517# define SA_RESTART 0 4075# define SA_RESTART 0
3518#endif 4076#endif
3519 4077
3520#if EV_SIGNAL_ENABLE 4078#if EV_SIGNAL_ENABLE
3521 4079
3522void noinline 4080noinline
4081void
3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4082ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3524{ 4083{
3525 if (expect_false (ev_is_active (w))) 4084 if (expect_false (ev_is_active (w)))
3526 return; 4085 return;
3527 4086
3528 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));
… …
3530#if EV_MULTIPLICITY 4089#if EV_MULTIPLICITY
3531 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",
3532 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4091 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3533 4092
3534 signals [w->signum - 1].loop = EV_A; 4093 signals [w->signum - 1].loop = EV_A;
4094 ECB_MEMORY_FENCE_RELEASE;
3535#endif 4095#endif
3536 4096
3537 EV_FREQUENT_CHECK; 4097 EV_FREQUENT_CHECK;
3538 4098
3539#if EV_USE_SIGNALFD 4099#if EV_USE_SIGNALFD
… …
3598 } 4158 }
3599 4159
3600 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
3601} 4161}
3602 4162
3603void noinline 4163noinline
4164void
3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4165ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3605{ 4166{
3606 clear_pending (EV_A_ (W)w); 4167 clear_pending (EV_A_ (W)w);
3607 if (expect_false (!ev_is_active (w))) 4168 if (expect_false (!ev_is_active (w)))
3608 return; 4169 return;
3609 4170
… …
3640#endif 4201#endif
3641 4202
3642#if EV_CHILD_ENABLE 4203#if EV_CHILD_ENABLE
3643 4204
3644void 4205void
3645ev_child_start (EV_P_ ev_child *w) EV_THROW 4206ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3646{ 4207{
3647#if EV_MULTIPLICITY 4208#if EV_MULTIPLICITY
3648 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));
3649#endif 4210#endif
3650 if (expect_false (ev_is_active (w))) 4211 if (expect_false (ev_is_active (w)))
… …
3657 4218
3658 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
3659} 4220}
3660 4221
3661void 4222void
3662ev_child_stop (EV_P_ ev_child *w) EV_THROW 4223ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3663{ 4224{
3664 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
3665 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
3666 return; 4227 return;
3667 4228
… …
3684 4245
3685#define DEF_STAT_INTERVAL 5.0074891 4246#define DEF_STAT_INTERVAL 5.0074891
3686#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4247#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3687#define MIN_STAT_INTERVAL 0.1074891 4248#define MIN_STAT_INTERVAL 0.1074891
3688 4249
3689static 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);
3690 4251
3691#if EV_USE_INOTIFY 4252#if EV_USE_INOTIFY
3692 4253
3693/* 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 */
3694# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4255# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3695 4256
3696static void noinline 4257noinline
4258static void
3697infy_add (EV_P_ ev_stat *w) 4259infy_add (EV_P_ ev_stat *w)
3698{ 4260{
3699 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);
3700 4265
3701 if (w->wd >= 0) 4266 if (w->wd >= 0)
3702 { 4267 {
3703 struct statfs sfs; 4268 struct statfs sfs;
3704 4269
… …
3708 4273
3709 if (!fs_2625) 4274 if (!fs_2625)
3710 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4275 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3711 else if (!statfs (w->path, &sfs) 4276 else if (!statfs (w->path, &sfs)
3712 && (sfs.f_type == 0x1373 /* devfs */ 4277 && (sfs.f_type == 0x1373 /* devfs */
4278 || sfs.f_type == 0x4006 /* fat */
4279 || sfs.f_type == 0x4d44 /* msdos */
3713 || 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 */
3714 || sfs.f_type == 0x3153464a /* jfs */ 4284 || sfs.f_type == 0x3153464a /* jfs */
4285 || sfs.f_type == 0x9123683e /* btrfs */
3715 || sfs.f_type == 0x52654973 /* reiser3 */ 4286 || sfs.f_type == 0x52654973 /* reiser3 */
3716 || sfs.f_type == 0x01021994 /* tempfs */ 4287 || sfs.f_type == 0x01021994 /* tmpfs */
3717 || sfs.f_type == 0x58465342 /* xfs */)) 4288 || sfs.f_type == 0x58465342 /* xfs */))
3718 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4289 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3719 else 4290 else
3720 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 */
3721 } 4292 }
… …
3756 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4327 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3757 ev_timer_again (EV_A_ &w->timer); 4328 ev_timer_again (EV_A_ &w->timer);
3758 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4329 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3759} 4330}
3760 4331
3761static void noinline 4332noinline
4333static void
3762infy_del (EV_P_ ev_stat *w) 4334infy_del (EV_P_ ev_stat *w)
3763{ 4335{
3764 int slot; 4336 int slot;
3765 int wd = w->wd; 4337 int wd = w->wd;
3766 4338
… …
3773 4345
3774 /* remove this watcher, if others are watching it, they will rearm */ 4346 /* remove this watcher, if others are watching it, they will rearm */
3775 inotify_rm_watch (fs_fd, wd); 4347 inotify_rm_watch (fs_fd, wd);
3776} 4348}
3777 4349
3778static void noinline 4350noinline
4351static void
3779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4352infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3780{ 4353{
3781 if (slot < 0) 4354 if (slot < 0)
3782 /* overflow, need to check for all hash slots */ 4355 /* overflow, need to check for all hash slots */
3783 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4356 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3819 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4392 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3820 ofs += sizeof (struct inotify_event) + ev->len; 4393 ofs += sizeof (struct inotify_event) + ev->len;
3821 } 4394 }
3822} 4395}
3823 4396
3824inline_size void ecb_cold 4397inline_size ecb_cold
4398void
3825ev_check_2625 (EV_P) 4399ev_check_2625 (EV_P)
3826{ 4400{
3827 /* kernels < 2.6.25 are borked 4401 /* kernels < 2.6.25 are borked
3828 * 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
3829 */ 4403 */
… …
3919#else 4493#else
3920# define EV_LSTAT(p,b) lstat (p, b) 4494# define EV_LSTAT(p,b) lstat (p, b)
3921#endif 4495#endif
3922 4496
3923void 4497void
3924ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4498ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3925{ 4499{
3926 if (lstat (w->path, &w->attr) < 0) 4500 if (lstat (w->path, &w->attr) < 0)
3927 w->attr.st_nlink = 0; 4501 w->attr.st_nlink = 0;
3928 else if (!w->attr.st_nlink) 4502 else if (!w->attr.st_nlink)
3929 w->attr.st_nlink = 1; 4503 w->attr.st_nlink = 1;
3930} 4504}
3931 4505
3932static void noinline 4506noinline
4507static void
3933stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4508stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3934{ 4509{
3935 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4510 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3936 4511
3937 ev_statdata prev = w->attr; 4512 ev_statdata prev = w->attr;
… …
3968 ev_feed_event (EV_A_ w, EV_STAT); 4543 ev_feed_event (EV_A_ w, EV_STAT);
3969 } 4544 }
3970} 4545}
3971 4546
3972void 4547void
3973ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4548ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3974{ 4549{
3975 if (expect_false (ev_is_active (w))) 4550 if (expect_false (ev_is_active (w)))
3976 return; 4551 return;
3977 4552
3978 ev_stat_stat (EV_A_ w); 4553 ev_stat_stat (EV_A_ w);
… …
3999 4574
4000 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
4001} 4576}
4002 4577
4003void 4578void
4004ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4579ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4005{ 4580{
4006 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
4007 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
4008 return; 4583 return;
4009 4584
… …
4025} 4600}
4026#endif 4601#endif
4027 4602
4028#if EV_IDLE_ENABLE 4603#if EV_IDLE_ENABLE
4029void 4604void
4030ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4605ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4031{ 4606{
4032 if (expect_false (ev_is_active (w))) 4607 if (expect_false (ev_is_active (w)))
4033 return; 4608 return;
4034 4609
4035 pri_adjust (EV_A_ (W)w); 4610 pri_adjust (EV_A_ (W)w);
… …
4048 4623
4049 EV_FREQUENT_CHECK; 4624 EV_FREQUENT_CHECK;
4050} 4625}
4051 4626
4052void 4627void
4053ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4628ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4054{ 4629{
4055 clear_pending (EV_A_ (W)w); 4630 clear_pending (EV_A_ (W)w);
4056 if (expect_false (!ev_is_active (w))) 4631 if (expect_false (!ev_is_active (w)))
4057 return; 4632 return;
4058 4633
… …
4072} 4647}
4073#endif 4648#endif
4074 4649
4075#if EV_PREPARE_ENABLE 4650#if EV_PREPARE_ENABLE
4076void 4651void
4077ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4652ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4078{ 4653{
4079 if (expect_false (ev_is_active (w))) 4654 if (expect_false (ev_is_active (w)))
4080 return; 4655 return;
4081 4656
4082 EV_FREQUENT_CHECK; 4657 EV_FREQUENT_CHECK;
… …
4087 4662
4088 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
4089} 4664}
4090 4665
4091void 4666void
4092ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4667ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4093{ 4668{
4094 clear_pending (EV_A_ (W)w); 4669 clear_pending (EV_A_ (W)w);
4095 if (expect_false (!ev_is_active (w))) 4670 if (expect_false (!ev_is_active (w)))
4096 return; 4671 return;
4097 4672
… …
4110} 4685}
4111#endif 4686#endif
4112 4687
4113#if EV_CHECK_ENABLE 4688#if EV_CHECK_ENABLE
4114void 4689void
4115ev_check_start (EV_P_ ev_check *w) EV_THROW 4690ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4116{ 4691{
4117 if (expect_false (ev_is_active (w))) 4692 if (expect_false (ev_is_active (w)))
4118 return; 4693 return;
4119 4694
4120 EV_FREQUENT_CHECK; 4695 EV_FREQUENT_CHECK;
… …
4125 4700
4126 EV_FREQUENT_CHECK; 4701 EV_FREQUENT_CHECK;
4127} 4702}
4128 4703
4129void 4704void
4130ev_check_stop (EV_P_ ev_check *w) EV_THROW 4705ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4131{ 4706{
4132 clear_pending (EV_A_ (W)w); 4707 clear_pending (EV_A_ (W)w);
4133 if (expect_false (!ev_is_active (w))) 4708 if (expect_false (!ev_is_active (w)))
4134 return; 4709 return;
4135 4710
… …
4147 EV_FREQUENT_CHECK; 4722 EV_FREQUENT_CHECK;
4148} 4723}
4149#endif 4724#endif
4150 4725
4151#if EV_EMBED_ENABLE 4726#if EV_EMBED_ENABLE
4152void noinline 4727noinline
4728void
4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4729ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4154{ 4730{
4155 ev_run (w->other, EVRUN_NOWAIT); 4731 ev_run (w->other, EVRUN_NOWAIT);
4156} 4732}
4157 4733
4158static void 4734static void
… …
4206 ev_idle_stop (EV_A_ idle); 4782 ev_idle_stop (EV_A_ idle);
4207} 4783}
4208#endif 4784#endif
4209 4785
4210void 4786void
4211ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4787ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4212{ 4788{
4213 if (expect_false (ev_is_active (w))) 4789 if (expect_false (ev_is_active (w)))
4214 return; 4790 return;
4215 4791
4216 { 4792 {
… …
4237 4813
4238 EV_FREQUENT_CHECK; 4814 EV_FREQUENT_CHECK;
4239} 4815}
4240 4816
4241void 4817void
4242ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4818ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4243{ 4819{
4244 clear_pending (EV_A_ (W)w); 4820 clear_pending (EV_A_ (W)w);
4245 if (expect_false (!ev_is_active (w))) 4821 if (expect_false (!ev_is_active (w)))
4246 return; 4822 return;
4247 4823
… …
4257} 4833}
4258#endif 4834#endif
4259 4835
4260#if EV_FORK_ENABLE 4836#if EV_FORK_ENABLE
4261void 4837void
4262ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4838ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4263{ 4839{
4264 if (expect_false (ev_is_active (w))) 4840 if (expect_false (ev_is_active (w)))
4265 return; 4841 return;
4266 4842
4267 EV_FREQUENT_CHECK; 4843 EV_FREQUENT_CHECK;
… …
4272 4848
4273 EV_FREQUENT_CHECK; 4849 EV_FREQUENT_CHECK;
4274} 4850}
4275 4851
4276void 4852void
4277ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4853ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4278{ 4854{
4279 clear_pending (EV_A_ (W)w); 4855 clear_pending (EV_A_ (W)w);
4280 if (expect_false (!ev_is_active (w))) 4856 if (expect_false (!ev_is_active (w)))
4281 return; 4857 return;
4282 4858
… …
4295} 4871}
4296#endif 4872#endif
4297 4873
4298#if EV_CLEANUP_ENABLE 4874#if EV_CLEANUP_ENABLE
4299void 4875void
4300ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4876ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4301{ 4877{
4302 if (expect_false (ev_is_active (w))) 4878 if (expect_false (ev_is_active (w)))
4303 return; 4879 return;
4304 4880
4305 EV_FREQUENT_CHECK; 4881 EV_FREQUENT_CHECK;
… …
4312 ev_unref (EV_A); 4888 ev_unref (EV_A);
4313 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4314} 4890}
4315 4891
4316void 4892void
4317ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4893ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4318{ 4894{
4319 clear_pending (EV_A_ (W)w); 4895 clear_pending (EV_A_ (W)w);
4320 if (expect_false (!ev_is_active (w))) 4896 if (expect_false (!ev_is_active (w)))
4321 return; 4897 return;
4322 4898
… …
4336} 4912}
4337#endif 4913#endif
4338 4914
4339#if EV_ASYNC_ENABLE 4915#if EV_ASYNC_ENABLE
4340void 4916void
4341ev_async_start (EV_P_ ev_async *w) EV_THROW 4917ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4342{ 4918{
4343 if (expect_false (ev_is_active (w))) 4919 if (expect_false (ev_is_active (w)))
4344 return; 4920 return;
4345 4921
4346 w->sent = 0; 4922 w->sent = 0;
… …
4355 4931
4356 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
4357} 4933}
4358 4934
4359void 4935void
4360ev_async_stop (EV_P_ ev_async *w) EV_THROW 4936ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4361{ 4937{
4362 clear_pending (EV_A_ (W)w); 4938 clear_pending (EV_A_ (W)w);
4363 if (expect_false (!ev_is_active (w))) 4939 if (expect_false (!ev_is_active (w)))
4364 return; 4940 return;
4365 4941
… …
4376 4952
4377 EV_FREQUENT_CHECK; 4953 EV_FREQUENT_CHECK;
4378} 4954}
4379 4955
4380void 4956void
4381ev_async_send (EV_P_ ev_async *w) EV_THROW 4957ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4382{ 4958{
4383 w->sent = 1; 4959 w->sent = 1;
4384 evpipe_write (EV_A_ &async_pending); 4960 evpipe_write (EV_A_ &async_pending);
4385} 4961}
4386#endif 4962#endif
… …
4423 4999
4424 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));
4425} 5001}
4426 5002
4427void 5003void
4428ev_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
4429{ 5005{
4430 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));
4431
4432 if (expect_false (!once))
4433 {
4434 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4435 return;
4436 }
4437 5007
4438 once->cb = cb; 5008 once->cb = cb;
4439 once->arg = arg; 5009 once->arg = arg;
4440 5010
4441 ev_init (&once->io, once_cb_io); 5011 ev_init (&once->io, once_cb_io);
… …
4454} 5024}
4455 5025
4456/*****************************************************************************/ 5026/*****************************************************************************/
4457 5027
4458#if EV_WALK_ENABLE 5028#if EV_WALK_ENABLE
4459void ecb_cold 5029ecb_cold
5030void
4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5031ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4461{ 5032{
4462 int i, j; 5033 int i, j;
4463 ev_watcher_list *wl, *wn; 5034 ev_watcher_list *wl, *wn;
4464 5035
4465 if (types & (EV_IO | EV_EMBED)) 5036 if (types & (EV_IO | EV_EMBED))

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