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Comparing libev/ev.c (file contents):
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 UTC vs.
Revision 1.485 by root, Mon Aug 13 10:01:19 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) 2007,2008,2009,2010,2011,2012,2013 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
… …
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
360#endif 368#endif
361 369
362#ifdef ANDROID 370#ifdef __ANDROID__
363/* supposedly, android doesn't typedef fd_mask */ 371/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT 372# undef EV_USE_SELECT
365# define EV_USE_SELECT 0 373# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL 375# undef EV_USE_CLOCK_SYSCALL
… …
485/* 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 */
486/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
487/* 495/*
488 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
489 * 497 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved. 500 * All rights reserved.
493 * 501 *
494 * 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-
495 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
509 * 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;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * 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
513 * 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.
514 */ 533 */
515 534
516#ifndef ECB_H 535#ifndef ECB_H
517#define ECB_H 536#define ECB_H
518 537
519/* 16 bits major, 16 bits minor */ 538/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003 539#define ECB_VERSION 0x00010005
521 540
522#ifdef _WIN32 541#ifdef _WIN32
523 typedef signed char int8_t; 542 typedef signed char int8_t;
524 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
525 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
542 typedef uint32_t uintptr_t; 561 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t; 562 typedef int32_t intptr_t;
544 #endif 563 #endif
545#else 564#else
546 #include <inttypes.h> 565 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU 566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
548 #define ECB_PTRSIZE 8 567 #define ECB_PTRSIZE 8
549 #else 568 #else
550 #define ECB_PTRSIZE 4 569 #define ECB_PTRSIZE 4
551 #endif 570 #endif
552#endif 571#endif
553 572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
554/* work around x32 idiocy by defining proper macros */ 576/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64 577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
556 #if _ILP32 578 #if _ILP32
557 #define ECB_AMD64_X32 1 579 #define ECB_AMD64_X32 1
558 #else 580 #else
559 #define ECB_AMD64 1 581 #define ECB_AMD64 1
560 #endif 582 #endif
… …
565 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so. 588 * or so.
567 * 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
568 * 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.
569 */ 591 */
570#ifndef ECB_GCC_VERSION
571 #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__
572 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
573 #else 594#else
574 #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)))
575 #endif 596#endif
576#endif
577 597
578#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)))
579#define ECB_C99 (__STDC_VERSION__ >= 199901L) 599
580#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
581#define ECB_CPP (__cplusplus+0) 612#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L) 613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
583 625
584#if ECB_CPP 626#if ECB_CPP
585 #define ECB_EXTERN_C extern "C" 627 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END } 629 #define ECB_EXTERN_C_END }
… …
600 #define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
601#endif 643#endif
602 644
603#if ECB_NO_SMP 645#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
605#endif 656#endif
606 657
607#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__ 660 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__ 690 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
651 712
652#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7) 714 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */ 715 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
656 719
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 720 #elif ECB_CLANG_EXTENSION(c_atomic)
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model. 721 /* see comment below (stdatomic.h) about the C11 memory model. */
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */ 723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
665 725
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
692 /* any fence other than seq_cst, which isn't very efficient for us. */ 758 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */ 759 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */ 760 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */ 761 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */ 762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif 766 #endif
699#endif 767#endif
700 768
701#ifndef ECB_MEMORY_FENCE 769#ifndef ECB_MEMORY_FENCE
… …
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif 793#endif
726 794
727/*****************************************************************************/ 795/*****************************************************************************/
728 796
729#if __cplusplus 797#if ECB_CPP
730 #define ecb_inline static inline 798 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
733#elif ECB_C99 801#elif ECB_C99
734 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
748 816
749#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
753 822
754#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
755 824
756#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
757 #define ecb_attribute(attrlist) __attribute__(attrlist) 826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
758 #define ecb_is_constant(expr) __builtin_constant_p (expr) 832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
843#else
844 #define ecb_expect(expr,value) (expr)
845#endif
846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else 849#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality) 850 #define ecb_prefetch(addr,rw,locality)
766#endif 851#endif
767 852
768/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5) 854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
770 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
771#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
772 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
773#endif 860#endif
774 861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
775#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
776#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
779 885
780#if ECB_C11 886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
781 #define ecb_noreturn _Noreturn 888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
782#else 894#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__)) 895 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif 896#endif
785 897
786#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
… …
801/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
804 916
805/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4) 918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */ 928 /* no popcountll */
814#else 929#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
816 ecb_function_ int 931 ecb_function_ ecb_const int
817 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
818 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
819 int r = 0; 939 int r = 0;
820 940
821 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
822 942
823#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
833 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
835#endif 955#endif
836 956
837 return r; 957 return r;
958#endif
838 } 959 }
839 960
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
841 ecb_function_ int 962 ecb_function_ ecb_const int
842 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
843 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
844 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
846 } 973 }
847 974
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
849 ecb_function_ int 976 ecb_function_ ecb_const int
850 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
851 { 978 {
852 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101; 982 x *= 0x01010101;
856 983
857 return x >> 24; 984 return x >> 24;
858 } 985 }
859 986
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
861 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
862 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
863 int r = 0; 995 int r = 0;
864 996
865 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
870 1002
871 return r; 1003 return r;
1004#endif
872 } 1005 }
873 1006
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
875 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
876 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
877 int r = 0; 1015 int r = 0;
878 1016
879 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
880 1018
881 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
882 } 1021 }
883#endif 1022#endif
884 1023
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889 1028
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
892{ 1031{
893 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895} 1034}
896 1035
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
899{ 1038{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
904 1043
905 return x; 1044 return x;
906} 1045}
907 1046
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
910{ 1049{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
917 return x; 1056 return x;
918} 1057}
919 1058
920/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */ 1060/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
923ecb_function_ int 1062ecb_function_ ecb_const int
924ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
925{ 1064{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927} 1066}
928 1067
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
937 1076
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946 1085
947#if ECB_GCC_VERSION(4,3) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
949 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
951#else 1099#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
953 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
954 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
955 { 1103 {
956 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
957 } 1105 }
958 1106
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
960 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
961 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
962 { 1110 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 } 1112 }
965 1113
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
967 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
968 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
969 { 1117 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 } 1119 }
972#endif 1120#endif
973 1121
974#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
975 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
976#else 1124#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
979 ecb_inline void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
980#endif 1128#endif
981 1129
982/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984 1132
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
986ecb_inline unsigned char 1134ecb_inline ecb_const uint32_t
987ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
988{ 1136{
989 /* the union code still generates code under pressure in gcc, */ 1137 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */ 1138 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */ 1139 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */ 1140 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */ 1141 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */ 1142 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
998 return 0x44; 1146 return 0x44332211;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1000 return 0x11; 1150 return 0x11223344;
1001#else 1151#else
1002 union 1152 union
1003 { 1153 {
1154 uint8_t c[4];
1004 uint32_t i; 1155 uint32_t u;
1005 uint8_t c;
1006 } u = { 0x11223344 }; 1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1007 return u.c; 1157 return u.u;
1008#endif 1158#endif
1009} 1159}
1010 1160
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1015 1165
1016#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else 1168#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif 1170#endif
1021 1171
1022#if __cplusplus 1172#if ECB_CPP
1023 template<typename T> 1173 template<typename T>
1024 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
1025 { 1175 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 } 1177 }
… …
1044 } 1194 }
1045#else 1195#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif 1197#endif
1048 1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1049/*******************************************************************************/ 1295/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051 1297
1052/* basically, everything uses "ieee pure-endian" floating point numbers */ 1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \ 1300#if 0 \
1055 || __i386 || __i386__ \ 1301 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1302 || ECB_GCC_AMD64 \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \ 1304 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \ 1305 || defined __mips__ \
1061 || defined __alpha__ \ 1306 || defined __alpha__ \
1062 || defined __hppa__ \ 1307 || defined __hppa__ \
1063 || defined __ia64__ \ 1308 || defined __ia64__ \
1064 || defined __m68k__ \ 1309 || defined __m68k__ \
1065 || defined __m88k__ \ 1310 || defined __m88k__ \
1066 || defined __sh__ \ 1311 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1068 #define ECB_STDFP 1 1315 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */ 1316 #include <string.h> /* for memcpy */
1070#else 1317#else
1071 #define ECB_STDFP 0 1318 #define ECB_STDFP 0
1072#endif 1319#endif
1073 1320
1074#ifndef ECB_NO_LIBM 1321#ifndef ECB_NO_LIBM
1075 1322
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ 1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077 1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1078 #ifdef NEN 1332 #ifdef NAN
1079 #define ECB_NAN NAN 1333 #define ECB_NAN NAN
1080 #else 1334 #else
1081 #define ECB_NAN INFINITY 1335 #define ECB_NAN ECB_INFINITY
1082 #endif 1336 #endif
1083 1337
1084 /* converts an ieee half/binary16 to a float */ 1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1086 ecb_function_ float 1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1087 ecb_binary16_to_float (uint16_t x) 1341 #else
1088 { 1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1089 int e = (x >> 10) & 0x1f; 1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1090 int m = x & 0x3ff; 1344 #endif
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100 1345
1101 /* convert a float to ieee single/binary32 */ 1346 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1103 ecb_function_ uint32_t 1348 ecb_function_ ecb_const uint32_t
1104 ecb_float_to_binary32 (float x) 1349 ecb_float_to_binary32 (float x)
1105 { 1350 {
1106 uint32_t r; 1351 uint32_t r;
1107 1352
1108 #if ECB_STDFP 1353 #if ECB_STDFP
… …
1115 if (x == 0e0f ) return 0x00000000U; 1360 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU; 1363 if (x != x ) return 0x7fbfffffU;
1119 1364
1120 m = frexpf (x, &e) * 0x1000000U; 1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1121 1366
1122 r = m & 0x80000000U; 1367 r = m & 0x80000000U;
1123 1368
1124 if (r) 1369 if (r)
1125 m = -m; 1370 m = -m;
… …
1137 1382
1138 return r; 1383 return r;
1139 } 1384 }
1140 1385
1141 /* converts an ieee single/binary32 to a float */ 1386 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1143 ecb_function_ float 1388 ecb_function_ ecb_const float
1144 ecb_binary32_to_float (uint32_t x) 1389 ecb_binary32_to_float (uint32_t x)
1145 { 1390 {
1146 float r; 1391 float r;
1147 1392
1148 #if ECB_STDFP 1393 #if ECB_STDFP
… …
1158 x |= 0x800000U; 1403 x |= 0x800000U;
1159 else 1404 else
1160 e = 1; 1405 e = 1;
1161 1406
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1164 1409
1165 r = neg ? -r : r; 1410 r = neg ? -r : r;
1166 #endif 1411 #endif
1167 1412
1168 return r; 1413 return r;
1169 } 1414 }
1170 1415
1171 /* convert a double to ieee double/binary64 */ 1416 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1173 ecb_function_ uint64_t 1418 ecb_function_ ecb_const uint64_t
1174 ecb_double_to_binary64 (double x) 1419 ecb_double_to_binary64 (double x)
1175 { 1420 {
1176 uint64_t r; 1421 uint64_t r;
1177 1422
1178 #if ECB_STDFP 1423 #if ECB_STDFP
… …
1207 1452
1208 return r; 1453 return r;
1209 } 1454 }
1210 1455
1211 /* converts an ieee double/binary64 to a double */ 1456 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1213 ecb_function_ double 1458 ecb_function_ ecb_const double
1214 ecb_binary64_to_double (uint64_t x) 1459 ecb_binary64_to_double (uint64_t x)
1215 { 1460 {
1216 double r; 1461 double r;
1217 1462
1218 #if ECB_STDFP 1463 #if ECB_STDFP
… …
1234 1479
1235 r = neg ? -r : r; 1480 r = neg ? -r : r;
1236 #endif 1481 #endif
1237 1482
1238 return r; 1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1239 } 1500 }
1240 1501
1241#endif 1502#endif
1242 1503
1243#endif 1504#endif
… …
1268#define inline_size ecb_inline 1529#define inline_size ecb_inline
1269 1530
1270#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
1271# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
1272#else 1533#else
1273# define inline_speed static noinline 1534# define inline_speed noinline static
1274#endif 1535#endif
1275 1536
1276#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1277 1538
1278#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
1325#else 1586#else
1326 1587
1327#include <float.h> 1588#include <float.h>
1328 1589
1329/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1330static ev_tstamp noinline 1592static ev_tstamp
1331ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1332{ 1594{
1333 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1334#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1335 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1367 1629
1368#ifdef __linux 1630#ifdef __linux
1369# include <sys/utsname.h> 1631# include <sys/utsname.h>
1370#endif 1632#endif
1371 1633
1372static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1373ev_linux_version (void) 1636ev_linux_version (void)
1374{ 1637{
1375#ifdef __linux 1638#ifdef __linux
1376 unsigned int v = 0; 1639 unsigned int v = 0;
1377 struct utsname buf; 1640 struct utsname buf;
… …
1406} 1669}
1407 1670
1408/*****************************************************************************/ 1671/*****************************************************************************/
1409 1672
1410#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1411static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1412ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1413{ 1677{
1414 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1415} 1679}
1416#endif 1680#endif
1417 1681
1418static void (*syserr_cb)(const char *msg) EV_THROW; 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1419 1683
1420void ecb_cold 1684ecb_cold
1685void
1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1422{ 1687{
1423 syserr_cb = cb; 1688 syserr_cb = cb;
1424} 1689}
1425 1690
1426static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1427ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1428{ 1694{
1429 if (!msg) 1695 if (!msg)
1430 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1431 1697
… …
1462 return 0; 1728 return 0;
1463} 1729}
1464 1730
1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1466 1732
1467void ecb_cold 1733ecb_cold
1734void
1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1469{ 1736{
1470 alloc = cb; 1737 alloc = cb;
1471} 1738}
1472 1739
… …
1641 struct timespec ts; 1908 struct timespec ts;
1642 1909
1643 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1644 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1645#elif defined _WIN32 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1646 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1647#else 1916#else
1648 struct timeval tv; 1917 struct timeval tv;
1649 1918
1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1681 } 1950 }
1682 1951
1683 return ncur; 1952 return ncur;
1684} 1953}
1685 1954
1686static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1687array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1688{ 1958{
1689 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1690 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1691} 1961}
… …
1694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1695 1965
1696#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1697 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1698 { \ 1968 { \
1699 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1700 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1701 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1702 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1703 } 1973 }
1704 1974
… …
1716 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1717 1987
1718/*****************************************************************************/ 1988/*****************************************************************************/
1719 1989
1720/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1721static void noinline 1991noinline
1992static void
1722pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1723{ 1994{
1724} 1995}
1725 1996
1726void noinline 1997noinline
1998void
1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1728{ 2000{
1729 W w_ = (W)w; 2001 W w_ = (W)w;
1730 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1731 2003
… …
1861 2133
1862 fdchangecnt = 0; 2134 fdchangecnt = 0;
1863} 2135}
1864 2136
1865/* something about the given fd changed */ 2137/* something about the given fd changed */
1866inline_size void 2138inline_size
2139void
1867fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1868{ 2141{
1869 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1870 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1871 2144
… …
1876 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1877 } 2150 }
1878} 2151}
1879 2152
1880/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1881inline_speed void ecb_cold 2154inline_speed ecb_cold void
1882fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1883{ 2156{
1884 ev_io *w; 2157 ev_io *w;
1885 2158
1886 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1889 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1890 } 2163 }
1891} 2164}
1892 2165
1893/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1894inline_size int ecb_cold 2167inline_size ecb_cold int
1895fd_valid (int fd) 2168fd_valid (int fd)
1896{ 2169{
1897#ifdef _WIN32 2170#ifdef _WIN32
1898 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1899#else 2172#else
1900 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1901#endif 2174#endif
1902} 2175}
1903 2176
1904/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1905static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1906fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1907{ 2181{
1908 int fd; 2182 int fd;
1909 2183
1910 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1912 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1913 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1914} 2188}
1915 2189
1916/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1917static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1918fd_enomem (EV_P) 2193fd_enomem (EV_P)
1919{ 2194{
1920 int fd; 2195 int fd;
1921 2196
1922 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1926 break; 2201 break;
1927 } 2202 }
1928} 2203}
1929 2204
1930/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1931static void noinline 2206noinline
2207static void
1932fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1933{ 2209{
1934 int fd; 2210 int fd;
1935 2211
1936 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
2117 2393
2118/*****************************************************************************/ 2394/*****************************************************************************/
2119 2395
2120#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2121 2397
2122static void noinline ecb_cold 2398noinline ecb_cold
2399static void
2123evpipe_init (EV_P) 2400evpipe_init (EV_P)
2124{ 2401{
2125 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
2126 { 2403 {
2127 int fds [2]; 2404 int fds [2];
… …
2198#endif 2475#endif
2199 { 2476 {
2200#ifdef _WIN32 2477#ifdef _WIN32
2201 WSABUF buf; 2478 WSABUF buf;
2202 DWORD sent; 2479 DWORD sent;
2203 buf.buf = &buf; 2480 buf.buf = (char *)&buf;
2204 buf.len = 1; 2481 buf.len = 1;
2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else 2483#else
2207 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2208#endif 2485#endif
… …
2305#endif 2582#endif
2306 2583
2307 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
2308} 2585}
2309 2586
2310void noinline 2587noinline
2588void
2311ev_feed_signal_event (EV_P_ int signum) EV_THROW 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
2312{ 2590{
2313 WL w; 2591 WL w;
2314 2592
2315 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
… …
2432#endif 2710#endif
2433#if EV_USE_SELECT 2711#if EV_USE_SELECT
2434# include "ev_select.c" 2712# include "ev_select.c"
2435#endif 2713#endif
2436 2714
2437int ecb_cold 2715ecb_cold int
2438ev_version_major (void) EV_THROW 2716ev_version_major (void) EV_THROW
2439{ 2717{
2440 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2441} 2719}
2442 2720
2443int ecb_cold 2721ecb_cold int
2444ev_version_minor (void) EV_THROW 2722ev_version_minor (void) EV_THROW
2445{ 2723{
2446 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2447} 2725}
2448 2726
2449/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2450int inline_size ecb_cold 2728inline_size ecb_cold int
2451enable_secure (void) 2729enable_secure (void)
2452{ 2730{
2453#ifdef _WIN32 2731#ifdef _WIN32
2454 return 0; 2732 return 0;
2455#else 2733#else
2456 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2457 || getgid () != getegid (); 2735 || getgid () != getegid ();
2458#endif 2736#endif
2459} 2737}
2460 2738
2461unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2462ev_supported_backends (void) EV_THROW 2741ev_supported_backends (void) EV_THROW
2463{ 2742{
2464 unsigned int flags = 0; 2743 unsigned int flags = 0;
2465 2744
2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2470 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2471 2750
2472 return flags; 2751 return flags;
2473} 2752}
2474 2753
2475unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2476ev_recommended_backends (void) EV_THROW 2756ev_recommended_backends (void) EV_THROW
2477{ 2757{
2478 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2479 2759
2480#ifndef __NetBSD__ 2760#ifndef __NetBSD__
… …
2492#endif 2772#endif
2493 2773
2494 return flags; 2774 return flags;
2495} 2775}
2496 2776
2497unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2498ev_embeddable_backends (void) EV_THROW 2779ev_embeddable_backends (void) EV_THROW
2499{ 2780{
2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2501 2782
2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2548{ 2829{
2549 return userdata; 2830 return userdata;
2550} 2831}
2551 2832
2552void 2833void
2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2554{ 2835{
2555 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2556} 2837}
2557 2838
2558void 2839void
… …
2562 acquire_cb = acquire; 2843 acquire_cb = acquire;
2563} 2844}
2564#endif 2845#endif
2565 2846
2566/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2567static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2568loop_init (EV_P_ unsigned int flags) EV_THROW 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2569{ 2851{
2570 if (!backend) 2852 if (!backend)
2571 { 2853 {
2572 origflags = flags; 2854 origflags = flags;
… …
2659#endif 2941#endif
2660 } 2942 }
2661} 2943}
2662 2944
2663/* free up a loop structure */ 2945/* free up a loop structure */
2664void ecb_cold 2946ecb_cold
2947void
2665ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2666{ 2949{
2667 int i; 2950 int i;
2668 2951
2669#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2790#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2791 infy_fork (EV_A); 3074 infy_fork (EV_A);
2792#endif 3075#endif
2793 3076
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2795 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2796 { 3079 {
2797 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2798 3081
2799 ev_ref (EV_A); 3082 ev_ref (EV_A);
2800 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
… …
2811 postfork = 0; 3094 postfork = 0;
2812} 3095}
2813 3096
2814#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2815 3098
3099ecb_cold
2816struct ev_loop * ecb_cold 3100struct ev_loop *
2817ev_loop_new (unsigned int flags) EV_THROW 3101ev_loop_new (unsigned int flags) EV_THROW
2818{ 3102{
2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2820 3104
2821 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2829} 3113}
2830 3114
2831#endif /* multiplicity */ 3115#endif /* multiplicity */
2832 3116
2833#if EV_VERIFY 3117#if EV_VERIFY
2834static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2835verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2836{ 3121{
2837 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2838 3123
2839 if (w->pending) 3124 if (w->pending)
2840 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2841} 3126}
2842 3127
2843static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2844verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2845{ 3131{
2846 int i; 3132 int i;
2847 3133
2848 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2853 3139
2854 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2855 } 3141 }
2856} 3142}
2857 3143
2858static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2859array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2860{ 3147{
2861 while (cnt--) 3148 while (cnt--)
2862 { 3149 {
2863 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2952#endif 3239#endif
2953} 3240}
2954#endif 3241#endif
2955 3242
2956#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2957struct ev_loop * ecb_cold 3245struct ev_loop *
2958#else 3246#else
2959int 3247int
2960#endif 3248#endif
2961ev_default_loop (unsigned int flags) EV_THROW 3249ev_default_loop (unsigned int flags) EV_THROW
2962{ 3250{
… …
3010 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
3011 3299
3012 return count; 3300 return count;
3013} 3301}
3014 3302
3015void noinline 3303noinline
3304void
3016ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
3017{ 3306{
3018 pendingpri = NUMPRI; 3307 pendingpri = NUMPRI;
3019 3308
3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3309 do
3021 { 3310 {
3022 --pendingpri; 3311 --pendingpri;
3023 3312
3313 /* pendingpri possibly gets modified in the inner loop */
3024 while (pendingcnt [pendingpri]) 3314 while (pendingcnt [pendingpri])
3025 { 3315 {
3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3027 3317
3028 p->w->pending = 0; 3318 p->w->pending = 0;
3029 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
3030 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
3031 } 3321 }
3032 } 3322 }
3323 while (pendingpri);
3033} 3324}
3034 3325
3035#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
3036/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
3037/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
3095 } 3386 }
3096} 3387}
3097 3388
3098#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
3099 3390
3100static void noinline 3391noinline
3392static void
3101periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
3102{ 3394{
3103 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3104 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3105 3397
… …
3163 } 3455 }
3164} 3456}
3165 3457
3166/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
3167/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
3168static void noinline ecb_cold 3460noinline ecb_cold
3461static void
3169periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
3170{ 3463{
3171 int i; 3464 int i;
3172 3465
3173 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
3186 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
3187} 3480}
3188#endif 3481#endif
3189 3482
3190/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
3191static void noinline ecb_cold 3484noinline ecb_cold
3485static void
3192timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
3193{ 3487{
3194 int i; 3488 int i;
3195 3489
3196 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
3564 w->active = 0; 3858 w->active = 0;
3565} 3859}
3566 3860
3567/*****************************************************************************/ 3861/*****************************************************************************/
3568 3862
3569void noinline 3863noinline
3864void
3570ev_io_start (EV_P_ ev_io *w) EV_THROW 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
3571{ 3866{
3572 int fd = w->fd; 3867 int fd = w->fd;
3573 3868
3574 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
… …
3590 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3591 3886
3592 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3593} 3888}
3594 3889
3595void noinline 3890noinline
3891void
3596ev_io_stop (EV_P_ ev_io *w) EV_THROW 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
3597{ 3893{
3598 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3600 return; 3896 return;
… …
3609 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3610 3906
3611 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3612} 3908}
3613 3909
3614void noinline 3910noinline
3911void
3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3616{ 3913{
3617 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3618 return; 3915 return;
3619 3916
… …
3633 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3634 3931
3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3636} 3933}
3637 3934
3638void noinline 3935noinline
3936void
3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3640{ 3938{
3641 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3642 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3643 return; 3941 return;
… …
3663 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3664 3962
3665 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3666} 3964}
3667 3965
3668void noinline 3966noinline
3967void
3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3670{ 3969{
3671 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3672 3971
3673 clear_pending (EV_A_ (W)w); 3972 clear_pending (EV_A_ (W)w);
… …
3697{ 3996{
3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3699} 3998}
3700 3999
3701#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3702void noinline 4001noinline
4002void
3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3704{ 4004{
3705 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3706 return; 4006 return;
3707 4007
… …
3727 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3728 4028
3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3730} 4030}
3731 4031
3732void noinline 4032noinline
4033void
3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3734{ 4035{
3735 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3736 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3737 return; 4038 return;
… …
3755 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3756 4057
3757 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3758} 4059}
3759 4060
3760void noinline 4061noinline
4062void
3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3762{ 4064{
3763 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3764 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3765 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
… …
3770# define SA_RESTART 0 4072# define SA_RESTART 0
3771#endif 4073#endif
3772 4074
3773#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3774 4076
3775void noinline 4077noinline
4078void
3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3777{ 4080{
3778 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3779 return; 4082 return;
3780 4083
… …
3852 } 4155 }
3853 4156
3854 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3855} 4158}
3856 4159
3857void noinline 4160noinline
4161void
3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3859{ 4163{
3860 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3861 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3862 return; 4166 return;
… …
3938 4242
3939#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3940#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3941#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3942 4246
3943static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3944 4248
3945#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3946 4250
3947/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3949 4253
3950static void noinline 4254noinline
4255static void
3951infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3952{ 4257{
3953 w->wd = inotify_add_watch (fs_fd, w->path, 4258 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4019 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4020 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
4021 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4022} 4327}
4023 4328
4024static void noinline 4329noinline
4330static void
4025infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
4026{ 4332{
4027 int slot; 4333 int slot;
4028 int wd = w->wd; 4334 int wd = w->wd;
4029 4335
… …
4036 4342
4037 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
4038 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
4039} 4345}
4040 4346
4041static void noinline 4347noinline
4348static void
4042infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4043{ 4350{
4044 if (slot < 0) 4351 if (slot < 0)
4045 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
4046 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4082 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4083 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
4084 } 4391 }
4085} 4392}
4086 4393
4087inline_size void ecb_cold 4394inline_size ecb_cold
4395void
4088ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
4089{ 4397{
4090 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
4091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4092 */ 4400 */
… …
4190 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
4191 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
4192 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
4193} 4501}
4194 4502
4195static void noinline 4503noinline
4504static void
4196stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4197{ 4506{
4198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4199 4508
4200 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
4410 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4411} 4720}
4412#endif 4721#endif
4413 4722
4414#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
4415void noinline 4724noinline
4725void
4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4417{ 4727{
4418 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
4419} 4729}
4420 4730
… …
4717} 5027}
4718 5028
4719/*****************************************************************************/ 5029/*****************************************************************************/
4720 5030
4721#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4722void ecb_cold 5032ecb_cold
5033void
4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4724{ 5035{
4725 int i, j; 5036 int i, j;
4726 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4727 5038

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