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Comparing libev/ev.c (file contents):
Revision 1.455 by root, Sun Apr 28 12:45:20 2013 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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
… …
241#elif defined SIGARRAYSIZE 241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 245#else
246# error "unable to find value for NSIG, please report" 246# 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 247#endif
251 248
252#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
254#endif 251#endif
255 252
256#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 256# else
260# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
258# endif
259#endif
260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
261# endif 267# endif
262#endif 268#endif
263 269
264#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
487/* 493/*
488 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
489 * 495 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved. 498 * All rights reserved.
493 * 499 *
494 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * 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 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
514 */ 531 */
515 532
516#ifndef ECB_H 533#ifndef ECB_H
517#define ECB_H 534#define ECB_H
518 535
519/* 16 bits major, 16 bits minor */ 536/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003 537#define ECB_VERSION 0x00010005
521 538
522#ifdef _WIN32 539#ifdef _WIN32
523 typedef signed char int8_t; 540 typedef signed char int8_t;
524 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
525 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
542 typedef uint32_t uintptr_t; 559 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t; 560 typedef int32_t intptr_t;
544 #endif 561 #endif
545#else 562#else
546 #include <inttypes.h> 563 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU 564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
548 #define ECB_PTRSIZE 8 565 #define ECB_PTRSIZE 8
549 #else 566 #else
550 #define ECB_PTRSIZE 4 567 #define ECB_PTRSIZE 4
551 #endif 568 #endif
552#endif 569#endif
553 570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
554/* work around x32 idiocy by defining proper macros */ 574/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64 575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
556 #if __ILP32 576 #if _ILP32
557 #define ECB_AMD64_X32 1 577 #define ECB_AMD64_X32 1
558 #else 578 #else
559 #define ECB_AMD64 1 579 #define ECB_AMD64 1
560 #endif 580 #endif
561#endif 581#endif
… …
565 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so. 586 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have 587 * 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. 588 * an issue with that they should have done it right in the first place.
569 */ 589 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
573 #else 592#else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif 594#endif
576#endif
577 595
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
579#define ECB_C99 (__STDC_VERSION__ >= 199901L) 597
580#define ECB_C11 (__STDC_VERSION__ >= 201112L) 598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
581#define ECB_CPP (__cplusplus+0) 610#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L) 611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
583 623
584#if ECB_CPP 624#if ECB_CPP
585 #define ECB_EXTERN_C extern "C" 625 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END } 627 #define ECB_EXTERN_C_END }
… …
600 #define ECB_NO_SMP 1 640 #define ECB_NO_SMP 1
601#endif 641#endif
602 642
603#if ECB_NO_SMP 643#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
605#endif 654#endif
606 655
607#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__ 658 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 662 #elif ECB_GCC_AMD64
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* 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__ \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 678 #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__ \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__ 682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__ 688 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__ 690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
632 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
633 #elif defined __alpha__ 694 #elif defined __alpha__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
635 #elif defined __hppa__ 696 #elif defined __hppa__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif defined __ia64__ 699 #elif defined __ia64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
640 #endif 707 #endif
641 #endif 708 #endif
642#endif 709#endif
643 710
644#ifndef ECB_MEMORY_FENCE 711#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(4,7) 712 #if ECB_GCC_VERSION(4,7)
646 /* see comment below (stdatomic.h) about the C11 memory model. */ 713 /* see comment below (stdatomic.h) about the C11 memory model. */
647 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
648 717
649 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 718 #elif ECB_CLANG_EXTENSION(c_atomic)
650 * without risking compile time errors with other compilers. We *could*
651 * define our own ecb_clang_has_feature, but I just can't be bothered to work
652 * around this shit time and again.
653 * #elif defined __clang && __has_feature (cxx_atomic)
654 * // see comment below (stdatomic.h) about the C11 memory model. 719 /* see comment below (stdatomic.h) about the C11 memory model. */
655 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
656 */ 721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
657 723
658 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
659 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
660 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
661 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
662 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
663 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
664 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
684 /* any fence other than seq_cst, which isn't very efficient for us. */ 756 /* any fence other than seq_cst, which isn't very efficient for us. */
685 /* Why that is, we don't know - either the C11 memory model is quite useless */ 757 /* Why that is, we don't know - either the C11 memory model is quite useless */
686 /* for most usages, or gcc and clang have a bug */ 758 /* for most usages, or gcc and clang have a bug */
687 /* I *currently* lean towards the latter, and inefficiently implement */ 759 /* I *currently* lean towards the latter, and inefficiently implement */
688 /* all three of ecb's fences as a seq_cst fence */ 760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
689 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
690 #endif 764 #endif
691#endif 765#endif
692 766
693#ifndef ECB_MEMORY_FENCE 767#ifndef ECB_MEMORY_FENCE
… …
716 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
717#endif 791#endif
718 792
719/*****************************************************************************/ 793/*****************************************************************************/
720 794
721#if __cplusplus 795#if ECB_CPP
722 #define ecb_inline static inline 796 #define ecb_inline static inline
723#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
724 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
725#elif ECB_C99 799#elif ECB_C99
726 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
740 814
741#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
742#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
743#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
744#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
745 820
746#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
747 822
748#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
749 #define ecb_attribute(attrlist) __attribute__(attrlist) 824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
750 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
751 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
841#else
842 #define ecb_expect(expr,value) (expr)
843#endif
844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
752 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
753#else 847#else
754 #define ecb_attribute(attrlist)
755 #define ecb_is_constant(expr) 0
756 #define ecb_expect(expr,value) (expr)
757 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
758#endif 849#endif
759 850
760/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
761#if ECB_GCC_VERSION(4,5) 852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
762 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
763#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
764 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
765#endif 858#endif
766 859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
767#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
768#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
769#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
770#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
771 883
772#if ECB_C11 884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
773 #define ecb_noreturn _Noreturn 886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
774#else 892#else
775 #define ecb_noreturn ecb_attribute ((__noreturn__)) 893 #define ecb_noreturn ecb_attribute ((__noreturn__))
776#endif 894#endif
777 895
778#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
… …
793/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
794#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
795#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
796 914
797/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
798#if ECB_GCC_VERSION(3,4) 916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
799 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
800 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
801 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
802 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
803 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
804 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
805 /* no popcountll */ 926 /* no popcountll */
806#else 927#else
807 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
808 ecb_function_ int 929 ecb_function_ ecb_const int
809 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
810 { 931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
811 int r = 0; 937 int r = 0;
812 938
813 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
814 940
815#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
825 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
826 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
827#endif 953#endif
828 954
829 return r; 955 return r;
956#endif
830 } 957 }
831 958
832 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
833 ecb_function_ int 960 ecb_function_ ecb_const int
834 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
835 { 962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
836 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
837 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
838 } 971 }
839 972
840 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
841 ecb_function_ int 974 ecb_function_ ecb_const int
842 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
843 { 976 {
844 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
845 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
846 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
847 x *= 0x01010101; 980 x *= 0x01010101;
848 981
849 return x >> 24; 982 return x >> 24;
850 } 983 }
851 984
852 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
853 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
854 { 987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
855 int r = 0; 993 int r = 0;
856 994
857 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
858 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
859 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
860 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
861 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
862 1000
863 return r; 1001 return r;
1002#endif
864 } 1003 }
865 1004
866 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
867 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
868 { 1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
869 int r = 0; 1013 int r = 0;
870 1014
871 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
872 1016
873 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
874 } 1019 }
875#endif 1020#endif
876 1021
877ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
878ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
879ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
880ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
881 1026
882ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
883ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
884{ 1029{
885 return ( (x * 0x0802U & 0x22110U) 1030 return ( (x * 0x0802U & 0x22110U)
886 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
887} 1032}
888 1033
889ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
890ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
891{ 1036{
892 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
893 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
894 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
895 x = ( x >> 8 ) | ( x << 8); 1040 x = ( x >> 8 ) | ( x << 8);
896 1041
897 return x; 1042 return x;
898} 1043}
899 1044
900ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
901ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
902{ 1047{
903 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
904 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
905 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
906 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
909 return x; 1054 return x;
910} 1055}
911 1056
912/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
913/* so for this version we are lazy */ 1058/* so for this version we are lazy */
914ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
915ecb_function_ int 1060ecb_function_ ecb_const int
916ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
917{ 1062{
918 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
919} 1064}
920 1065
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
929 1074
930ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
931ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
932ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
933ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
934ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
935ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
936ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
937ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
938 1083
939#if ECB_GCC_VERSION(4,3) 1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
940 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
941 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
942 #define ecb_bswap64(x) __builtin_bswap64 (x) 1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
943#else 1097#else
944 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
945 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
946 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
947 { 1101 {
948 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
949 } 1103 }
950 1104
951 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
952 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
953 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
954 { 1108 {
955 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
956 } 1110 }
957 1111
958 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
959 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
960 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
961 { 1115 {
962 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
963 } 1117 }
964#endif 1118#endif
965 1119
966#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
967 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
968#else 1122#else
969 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
970 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
971 ecb_inline void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
972#endif 1126#endif
973 1127
974/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
975#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
976 1130
977ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
978ecb_inline unsigned char 1132ecb_inline ecb_const uint32_t
979ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
980{ 1134{
981 /* the union code still generates code under pressure in gcc, */ 1135 /* the union code still generates code under pressure in gcc, */
982 /* but less than using pointers, and always seems to */ 1136 /* but less than using pointers, and always seems to */
983 /* successfully return a constant. */ 1137 /* successfully return a constant. */
984 /* the reason why we have this horrible preprocessor mess */ 1138 /* the reason why we have this horrible preprocessor mess */
985 /* is to avoid it in all cases, at least on common architectures */ 1139 /* is to avoid it in all cases, at least on common architectures */
986 /* or when using a recent enough gcc version (>= 4.6) */ 1140 /* or when using a recent enough gcc version (>= 4.6) */
987#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
988 return 0x44;
989#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
990 return 0x44; 1144 return 0x44332211;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
992 return 0x11; 1148 return 0x11223344;
993#else 1149#else
994 union 1150 union
995 { 1151 {
1152 uint8_t c[4];
996 uint32_t i; 1153 uint32_t u;
997 uint8_t c;
998 } u = { 0x11223344 }; 1154 } u = { 0x11, 0x22, 0x33, 0x44 };
999 return u.c; 1155 return u.u;
1000#endif 1156#endif
1001} 1157}
1002 1158
1003ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1004ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1005ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1006ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1007 1163
1008#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1009 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1010#else 1166#else
1011 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1012#endif 1168#endif
1013 1169
1014#if __cplusplus 1170#if ECB_CPP
1015 template<typename T> 1171 template<typename T>
1016 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
1017 { 1173 {
1018 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1019 } 1175 }
… …
1036 } 1192 }
1037#else 1193#else
1038 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1039#endif 1195#endif
1040 1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1041/*******************************************************************************/ 1293/*******************************************************************************/
1042/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1043 1295
1044/* basically, everything uses "ieee pure-endian" floating point numbers */ 1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1045/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1046#if 0 \ 1298#if 0 \
1047 || __i386 || __i386__ \ 1299 || __i386 || __i386__ \
1048 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1300 || ECB_GCC_AMD64 \
1049 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1050 || defined __arm__ && defined __ARM_EABI__ \
1051 || defined __s390__ || defined __s390x__ \ 1302 || defined __s390__ || defined __s390x__ \
1052 || defined __mips__ \ 1303 || defined __mips__ \
1053 || defined __alpha__ \ 1304 || defined __alpha__ \
1054 || defined __hppa__ \ 1305 || defined __hppa__ \
1055 || defined __ia64__ \ 1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1056 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1057 #define ECB_STDFP 1 1313 #define ECB_STDFP 1
1058 #include <string.h> /* for memcpy */ 1314 #include <string.h> /* for memcpy */
1059#else 1315#else
1060 #define ECB_STDFP 0 1316 #define ECB_STDFP 0
1061 #include <math.h> /* for frexp*, ldexp* */
1062#endif 1317#endif
1063 1318
1064#ifndef ECB_NO_LIBM 1319#ifndef ECB_NO_LIBM
1065 1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1066 /* convert a float to ieee single/binary32 */ 1344 /* convert a float to ieee single/binary32 */
1067 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1068 ecb_function_ uint32_t 1346 ecb_function_ ecb_const uint32_t
1069 ecb_float_to_binary32 (float x) 1347 ecb_float_to_binary32 (float x)
1070 { 1348 {
1071 uint32_t r; 1349 uint32_t r;
1072 1350
1073 #if ECB_STDFP 1351 #if ECB_STDFP
… …
1080 if (x == 0e0f ) return 0x00000000U; 1358 if (x == 0e0f ) return 0x00000000U;
1081 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1082 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1083 if (x != x ) return 0x7fbfffffU; 1361 if (x != x ) return 0x7fbfffffU;
1084 1362
1085 m = frexpf (x, &e) * 0x1000000U; 1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1086 1364
1087 r = m & 0x80000000U; 1365 r = m & 0x80000000U;
1088 1366
1089 if (r) 1367 if (r)
1090 m = -m; 1368 m = -m;
… …
1102 1380
1103 return r; 1381 return r;
1104 } 1382 }
1105 1383
1106 /* converts an ieee single/binary32 to a float */ 1384 /* converts an ieee single/binary32 to a float */
1107 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1108 ecb_function_ float 1386 ecb_function_ ecb_const float
1109 ecb_binary32_to_float (uint32_t x) 1387 ecb_binary32_to_float (uint32_t x)
1110 { 1388 {
1111 float r; 1389 float r;
1112 1390
1113 #if ECB_STDFP 1391 #if ECB_STDFP
… …
1123 x |= 0x800000U; 1401 x |= 0x800000U;
1124 else 1402 else
1125 e = 1; 1403 e = 1;
1126 1404
1127 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1128 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1129 1407
1130 r = neg ? -r : r; 1408 r = neg ? -r : r;
1131 #endif 1409 #endif
1132 1410
1133 return r; 1411 return r;
1134 } 1412 }
1135 1413
1136 /* convert a double to ieee double/binary64 */ 1414 /* convert a double to ieee double/binary64 */
1137 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1138 ecb_function_ uint64_t 1416 ecb_function_ ecb_const uint64_t
1139 ecb_double_to_binary64 (double x) 1417 ecb_double_to_binary64 (double x)
1140 { 1418 {
1141 uint64_t r; 1419 uint64_t r;
1142 1420
1143 #if ECB_STDFP 1421 #if ECB_STDFP
… …
1172 1450
1173 return r; 1451 return r;
1174 } 1452 }
1175 1453
1176 /* converts an ieee double/binary64 to a double */ 1454 /* converts an ieee double/binary64 to a double */
1177 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1178 ecb_function_ double 1456 ecb_function_ ecb_const double
1179 ecb_binary64_to_double (uint64_t x) 1457 ecb_binary64_to_double (uint64_t x)
1180 { 1458 {
1181 double r; 1459 double r;
1182 1460
1183 #if ECB_STDFP 1461 #if ECB_STDFP
… …
1199 1477
1200 r = neg ? -r : r; 1478 r = neg ? -r : r;
1201 #endif 1479 #endif
1202 1480
1203 return r; 1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1204 } 1498 }
1205 1499
1206#endif 1500#endif
1207 1501
1208#endif 1502#endif
… …
1233#define inline_size ecb_inline 1527#define inline_size ecb_inline
1234 1528
1235#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
1236# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
1237#else 1531#else
1238# define inline_speed static noinline 1532# define inline_speed noinline static
1239#endif 1533#endif
1240 1534
1241#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1242 1536
1243#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
1290#else 1584#else
1291 1585
1292#include <float.h> 1586#include <float.h>
1293 1587
1294/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1295static ev_tstamp noinline 1590static ev_tstamp
1296ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
1297{ 1592{
1298 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
1299#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1300 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1332 1627
1333#ifdef __linux 1628#ifdef __linux
1334# include <sys/utsname.h> 1629# include <sys/utsname.h>
1335#endif 1630#endif
1336 1631
1337static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1338ev_linux_version (void) 1634ev_linux_version (void)
1339{ 1635{
1340#ifdef __linux 1636#ifdef __linux
1341 unsigned int v = 0; 1637 unsigned int v = 0;
1342 struct utsname buf; 1638 struct utsname buf;
… …
1371} 1667}
1372 1668
1373/*****************************************************************************/ 1669/*****************************************************************************/
1374 1670
1375#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1376static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1377ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1378{ 1675{
1379 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1380} 1677}
1381#endif 1678#endif
1382 1679
1383static void (*syserr_cb)(const char *msg) EV_THROW; 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1384 1681
1385void ecb_cold 1682ecb_cold
1683void
1386ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1387{ 1685{
1388 syserr_cb = cb; 1686 syserr_cb = cb;
1389} 1687}
1390 1688
1391static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1392ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1393{ 1692{
1394 if (!msg) 1693 if (!msg)
1395 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1396 1695
… …
1427 return 0; 1726 return 0;
1428} 1727}
1429 1728
1430static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1431 1730
1432void ecb_cold 1731ecb_cold
1732void
1433ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1434{ 1734{
1435 alloc = cb; 1735 alloc = cb;
1436} 1736}
1437 1737
… …
1646 } 1946 }
1647 1947
1648 return ncur; 1948 return ncur;
1649} 1949}
1650 1950
1651static void * noinline ecb_cold 1951noinline ecb_cold
1952static void *
1652array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
1653{ 1954{
1654 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
1655 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
1656} 1957}
… …
1659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1660 1961
1661#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
1662 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
1663 { \ 1964 { \
1664 int ecb_unused ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
1665 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
1666 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
1667 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
1668 } 1969 }
1669 1970
… …
1681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1682 1983
1683/*****************************************************************************/ 1984/*****************************************************************************/
1684 1985
1685/* dummy callback for pending events */ 1986/* dummy callback for pending events */
1686static void noinline 1987noinline
1988static void
1687pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
1688{ 1990{
1689} 1991}
1690 1992
1691void noinline 1993noinline
1994void
1692ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1693{ 1996{
1694 W w_ = (W)w; 1997 W w_ = (W)w;
1695 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
1696 1999
… …
1826 2129
1827 fdchangecnt = 0; 2130 fdchangecnt = 0;
1828} 2131}
1829 2132
1830/* something about the given fd changed */ 2133/* something about the given fd changed */
1831inline_size void 2134inline_size
2135void
1832fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1833{ 2137{
1834 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1835 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1836 2140
… …
1841 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1842 } 2146 }
1843} 2147}
1844 2148
1845/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1846inline_speed void ecb_cold 2150inline_speed ecb_cold void
1847fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1848{ 2152{
1849 ev_io *w; 2153 ev_io *w;
1850 2154
1851 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1854 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1855 } 2159 }
1856} 2160}
1857 2161
1858/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1859inline_size int ecb_cold 2163inline_size ecb_cold int
1860fd_valid (int fd) 2164fd_valid (int fd)
1861{ 2165{
1862#ifdef _WIN32 2166#ifdef _WIN32
1863 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1864#else 2168#else
1865 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1866#endif 2170#endif
1867} 2171}
1868 2172
1869/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1870static void noinline ecb_cold 2174noinline ecb_cold
2175static void
1871fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1872{ 2177{
1873 int fd; 2178 int fd;
1874 2179
1875 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1877 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1878 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1879} 2184}
1880 2185
1881/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1882static void noinline ecb_cold 2187noinline ecb_cold
2188static void
1883fd_enomem (EV_P) 2189fd_enomem (EV_P)
1884{ 2190{
1885 int fd; 2191 int fd;
1886 2192
1887 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1891 break; 2197 break;
1892 } 2198 }
1893} 2199}
1894 2200
1895/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1896static void noinline 2202noinline
2203static void
1897fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1898{ 2205{
1899 int fd; 2206 int fd;
1900 2207
1901 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
2082 2389
2083/*****************************************************************************/ 2390/*****************************************************************************/
2084 2391
2085#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2086 2393
2087static void noinline ecb_cold 2394noinline ecb_cold
2395static void
2088evpipe_init (EV_P) 2396evpipe_init (EV_P)
2089{ 2397{
2090 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
2091 { 2399 {
2092 int fds [2]; 2400 int fds [2];
… …
2270#endif 2578#endif
2271 2579
2272 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
2273} 2581}
2274 2582
2275void noinline 2583noinline
2584void
2276ev_feed_signal_event (EV_P_ int signum) EV_THROW 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
2277{ 2586{
2278 WL w; 2587 WL w;
2279 2588
2280 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
… …
2397#endif 2706#endif
2398#if EV_USE_SELECT 2707#if EV_USE_SELECT
2399# include "ev_select.c" 2708# include "ev_select.c"
2400#endif 2709#endif
2401 2710
2402int ecb_cold 2711ecb_cold int
2403ev_version_major (void) EV_THROW 2712ev_version_major (void) EV_THROW
2404{ 2713{
2405 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
2406} 2715}
2407 2716
2408int ecb_cold 2717ecb_cold int
2409ev_version_minor (void) EV_THROW 2718ev_version_minor (void) EV_THROW
2410{ 2719{
2411 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
2412} 2721}
2413 2722
2414/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
2415int inline_size ecb_cold 2724inline_size ecb_cold int
2416enable_secure (void) 2725enable_secure (void)
2417{ 2726{
2418#ifdef _WIN32 2727#ifdef _WIN32
2419 return 0; 2728 return 0;
2420#else 2729#else
2421 return getuid () != geteuid () 2730 return getuid () != geteuid ()
2422 || getgid () != getegid (); 2731 || getgid () != getegid ();
2423#endif 2732#endif
2424} 2733}
2425 2734
2426unsigned int ecb_cold 2735ecb_cold
2736unsigned int
2427ev_supported_backends (void) EV_THROW 2737ev_supported_backends (void) EV_THROW
2428{ 2738{
2429 unsigned int flags = 0; 2739 unsigned int flags = 0;
2430 2740
2431 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2435 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2436 2746
2437 return flags; 2747 return flags;
2438} 2748}
2439 2749
2440unsigned int ecb_cold 2750ecb_cold
2751unsigned int
2441ev_recommended_backends (void) EV_THROW 2752ev_recommended_backends (void) EV_THROW
2442{ 2753{
2443 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
2444 2755
2445#ifndef __NetBSD__ 2756#ifndef __NetBSD__
… …
2457#endif 2768#endif
2458 2769
2459 return flags; 2770 return flags;
2460} 2771}
2461 2772
2462unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2463ev_embeddable_backends (void) EV_THROW 2775ev_embeddable_backends (void) EV_THROW
2464{ 2776{
2465 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2466 2778
2467 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2513{ 2825{
2514 return userdata; 2826 return userdata;
2515} 2827}
2516 2828
2517void 2829void
2518ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2519{ 2831{
2520 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
2521} 2833}
2522 2834
2523void 2835void
… …
2527 acquire_cb = acquire; 2839 acquire_cb = acquire;
2528} 2840}
2529#endif 2841#endif
2530 2842
2531/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
2532static void noinline ecb_cold 2844noinline ecb_cold
2845static void
2533loop_init (EV_P_ unsigned int flags) EV_THROW 2846loop_init (EV_P_ unsigned int flags) EV_THROW
2534{ 2847{
2535 if (!backend) 2848 if (!backend)
2536 { 2849 {
2537 origflags = flags; 2850 origflags = flags;
… …
2624#endif 2937#endif
2625 } 2938 }
2626} 2939}
2627 2940
2628/* free up a loop structure */ 2941/* free up a loop structure */
2629void ecb_cold 2942ecb_cold
2943void
2630ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
2631{ 2945{
2632 int i; 2946 int i;
2633 2947
2634#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2755#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2756 infy_fork (EV_A); 3070 infy_fork (EV_A);
2757#endif 3071#endif
2758 3072
2759#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2760 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
2761 { 3075 {
2762 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2763 3077
2764 ev_ref (EV_A); 3078 ev_ref (EV_A);
2765 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
… …
2776 postfork = 0; 3090 postfork = 0;
2777} 3091}
2778 3092
2779#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
2780 3094
3095ecb_cold
2781struct ev_loop * ecb_cold 3096struct ev_loop *
2782ev_loop_new (unsigned int flags) EV_THROW 3097ev_loop_new (unsigned int flags) EV_THROW
2783{ 3098{
2784 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2785 3100
2786 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2794} 3109}
2795 3110
2796#endif /* multiplicity */ 3111#endif /* multiplicity */
2797 3112
2798#if EV_VERIFY 3113#if EV_VERIFY
2799static void noinline ecb_cold 3114noinline ecb_cold
3115static void
2800verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
2801{ 3117{
2802 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2803 3119
2804 if (w->pending) 3120 if (w->pending)
2805 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2806} 3122}
2807 3123
2808static void noinline ecb_cold 3124noinline ecb_cold
3125static void
2809verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
2810{ 3127{
2811 int i; 3128 int i;
2812 3129
2813 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2818 3135
2819 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2820 } 3137 }
2821} 3138}
2822 3139
2823static void noinline ecb_cold 3140noinline ecb_cold
3141static void
2824array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
2825{ 3143{
2826 while (cnt--) 3144 while (cnt--)
2827 { 3145 {
2828 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2917#endif 3235#endif
2918} 3236}
2919#endif 3237#endif
2920 3238
2921#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2922struct ev_loop * ecb_cold 3241struct ev_loop *
2923#else 3242#else
2924int 3243int
2925#endif 3244#endif
2926ev_default_loop (unsigned int flags) EV_THROW 3245ev_default_loop (unsigned int flags) EV_THROW
2927{ 3246{
… …
2975 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2976 3295
2977 return count; 3296 return count;
2978} 3297}
2979 3298
2980void noinline 3299noinline
3300void
2981ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2982{ 3302{
2983 pendingpri = NUMPRI; 3303 pendingpri = NUMPRI;
2984 3304
2985 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
… …
3060 } 3380 }
3061} 3381}
3062 3382
3063#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
3064 3384
3065static void noinline 3385noinline
3386static void
3066periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
3067{ 3388{
3068 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3069 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3070 3391
… …
3128 } 3449 }
3129} 3450}
3130 3451
3131/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
3132/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
3133static void noinline ecb_cold 3454noinline ecb_cold
3455static void
3134periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
3135{ 3457{
3136 int i; 3458 int i;
3137 3459
3138 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
3151 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
3152} 3474}
3153#endif 3475#endif
3154 3476
3155/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
3156static void noinline ecb_cold 3478noinline ecb_cold
3479static void
3157timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
3158{ 3481{
3159 int i; 3482 int i;
3160 3483
3161 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
3529 w->active = 0; 3852 w->active = 0;
3530} 3853}
3531 3854
3532/*****************************************************************************/ 3855/*****************************************************************************/
3533 3856
3534void noinline 3857noinline
3858void
3535ev_io_start (EV_P_ ev_io *w) EV_THROW 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
3536{ 3860{
3537 int fd = w->fd; 3861 int fd = w->fd;
3538 3862
3539 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
… …
3555 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
3556 3880
3557 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
3558} 3882}
3559 3883
3560void noinline 3884noinline
3885void
3561ev_io_stop (EV_P_ ev_io *w) EV_THROW 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
3562{ 3887{
3563 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
3564 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
3565 return; 3890 return;
… …
3574 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3575 3900
3576 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3577} 3902}
3578 3903
3579void noinline 3904noinline
3905void
3580ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3581{ 3907{
3582 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3583 return; 3909 return;
3584 3910
… …
3598 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3599 3925
3600 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3601} 3927}
3602 3928
3603void noinline 3929noinline
3930void
3604ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3605{ 3932{
3606 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3607 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3608 return; 3935 return;
… …
3628 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
3629 3956
3630 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3631} 3958}
3632 3959
3633void noinline 3960noinline
3961void
3634ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3635{ 3963{
3636 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3637 3965
3638 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
… …
3662{ 3990{
3663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3664} 3992}
3665 3993
3666#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
3667void noinline 3995noinline
3996void
3668ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3669{ 3998{
3670 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3671 return; 4000 return;
3672 4001
… …
3692 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3693 4022
3694 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3695} 4024}
3696 4025
3697void noinline 4026noinline
4027void
3698ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3699{ 4029{
3700 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3701 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
3702 return; 4032 return;
… …
3720 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3721 4051
3722 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3723} 4053}
3724 4054
3725void noinline 4055noinline
4056void
3726ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3727{ 4058{
3728 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
3729 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
3730 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
… …
3735# define SA_RESTART 0 4066# define SA_RESTART 0
3736#endif 4067#endif
3737 4068
3738#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
3739 4070
3740void noinline 4071noinline
4072void
3741ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3742{ 4074{
3743 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3744 return; 4076 return;
3745 4077
… …
3817 } 4149 }
3818 4150
3819 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
3820} 4152}
3821 4153
3822void noinline 4154noinline
4155void
3823ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3824{ 4157{
3825 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
3826 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
3827 return; 4160 return;
… …
3903 4236
3904#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3905#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3906#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3907 4240
3908static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3909 4242
3910#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3911 4244
3912/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3913# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3914 4247
3915static void noinline 4248noinline
4249static void
3916infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3917{ 4251{
3918 w->wd = inotify_add_watch (fs_fd, w->path, 4252 w->wd = inotify_add_watch (fs_fd, w->path,
3919 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3920 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
3984 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3985 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3986 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3987} 4321}
3988 4322
3989static void noinline 4323noinline
4324static void
3990infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3991{ 4326{
3992 int slot; 4327 int slot;
3993 int wd = w->wd; 4328 int wd = w->wd;
3994 4329
… …
4001 4336
4002 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
4003 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
4004} 4339}
4005 4340
4006static void noinline 4341noinline
4342static void
4007infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4008{ 4344{
4009 if (slot < 0) 4345 if (slot < 0)
4010 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
4011 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4047 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4048 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
4049 } 4385 }
4050} 4386}
4051 4387
4052inline_size void ecb_cold 4388inline_size ecb_cold
4389void
4053ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
4054{ 4391{
4055 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
4056 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4057 */ 4394 */
… …
4155 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
4156 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
4157 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
4158} 4495}
4159 4496
4160static void noinline 4497noinline
4498static void
4161stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4162{ 4500{
4163 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4164 4502
4165 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
4375 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
4376} 4714}
4377#endif 4715#endif
4378 4716
4379#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
4380void noinline 4718noinline
4719void
4381ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4382{ 4721{
4383 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
4384} 4723}
4385 4724
… …
4682} 5021}
4683 5022
4684/*****************************************************************************/ 5023/*****************************************************************************/
4685 5024
4686#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
4687void ecb_cold 5026ecb_cold
5027void
4688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4689{ 5029{
4690 int i, j; 5030 int i, j;
4691 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
4692 5032

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