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Comparing libev/ev.c (file contents):
Revision 1.469 by root, Fri Sep 5 16:21:19 2014 UTC vs.
Revision 1.481 by root, Thu Jun 1 20:25:50 2017 UTC

… …
256# else 256# else
257# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
258# endif 258# endif
259#endif 259#endif
260 260
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
267# endif
268#endif
269
261#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
263# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
264# else 273# else
265# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
… …
354 363
355#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 366#endif
358 367
359#ifdef ANDROID 368#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 369/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 370# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 371# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL 373# undef EV_USE_CLOCK_SYSCALL
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482/* 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 */
483/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
484/* 493/*
485 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
486 * 495 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 498 * All rights reserved.
490 * 499 *
491 * 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-
492 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
523 532
524#ifndef ECB_H 533#ifndef ECB_H
525#define ECB_H 534#define ECB_H
526 535
527/* 16 bits major, 16 bits minor */ 536/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003 537#define ECB_VERSION 0x00010005
529 538
530#ifdef _WIN32 539#ifdef _WIN32
531 typedef signed char int8_t; 540 typedef signed char int8_t;
532 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
533 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
550 typedef uint32_t uintptr_t; 559 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t; 560 typedef int32_t intptr_t;
552 #endif 561 #endif
553#else 562#else
554 #include <inttypes.h> 563 #include <inttypes.h>
555 #if UINTMAX_MAX > 0xffffffffU 564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
556 #define ECB_PTRSIZE 8 565 #define ECB_PTRSIZE 8
557 #else 566 #else
558 #define ECB_PTRSIZE 4 567 #define ECB_PTRSIZE 4
559 #endif 568 #endif
560#endif 569#endif
561 570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
562/* work around x32 idiocy by defining proper macros */ 574/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
564 #if _ILP32 576 #if _ILP32
565 #define ECB_AMD64_X32 1 577 #define ECB_AMD64_X32 1
566 #else 578 #else
567 #define ECB_AMD64 1 579 #define ECB_AMD64 1
568 #endif 580 #endif
… …
573 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so. 586 * or so.
575 * 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
576 * 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.
577 */ 589 */
578#ifndef ECB_GCC_VERSION
579 #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__
580 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
581 #else 592#else
582 #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)))
583 #endif 594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
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
584#endif 608#endif
585 609
586#define ECB_CPP (__cplusplus+0) 610#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L) 611#define ECB_CPP11 (__cplusplus >= 201103L)
588 612
… …
616 #define ECB_NO_SMP 1 640 #define ECB_NO_SMP 1
617#endif 641#endif
618 642
619#if ECB_NO_SMP 643#if ECB_NO_SMP
620 #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 */
621#endif 654#endif
622 655
623#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
624 #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
625 #if __i386 || __i386__ 658 #if __i386 || __i386__
626 #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")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 662 #elif ECB_GCC_AMD64
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #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 */
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
637 #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")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__ 682 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8 684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
644 #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")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__ 688 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
672 /* see comment below (stdatomic.h) about the C11 memory model. */ 713 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676 717
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 718 #elif ECB_CLANG_EXTENSION(c_atomic)
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model. 719 /* see comment below (stdatomic.h) about the C11 memory model. */
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687 723
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif 791#endif
756 792
757/*****************************************************************************/ 793/*****************************************************************************/
758 794
759#if __cplusplus 795#if ECB_CPP
760 #define ecb_inline static inline 796 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
763#elif ECB_C99 799#elif ECB_C99
764 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
778 814
779#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
782#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))
783 820
784#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
785 822
786#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
787 #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)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else 831#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types 832 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797 835
798 #define ecb_is_constant(expr) 0 836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
841#else
799 #define ecb_expect(expr,value) (expr) 842 #define ecb_expect(expr,value) (expr)
843#endif
844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
847#else
800 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
801#endif 849#endif
802 850
803/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
804#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; };
805 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
806#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
807 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
808#endif 858#endif
809 859
810#if _MSC_VER >= 1300 860#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated) 861 #define ecb_deprecated __declspec (deprecated)
812#else 862#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__)) 863 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif 864#endif
815 865
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
816#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
817#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
820 883
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 884#if ECB_C11 || __IBMC_NORETURN
822#if ECB_C11 885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
823 #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)
824#else 892#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__)) 893 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif 894#endif
827 895
828#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
… …
843/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
846 914
847/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
848#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))
849 /* 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 */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */ 926 /* no popcountll */
856#else 927#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
858 ecb_function_ int 929 ecb_function_ ecb_const int
859 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
860 { 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
861 int r = 0; 937 int r = 0;
862 938
863 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
864 940
865#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
875 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
877#endif 953#endif
878 954
879 return r; 955 return r;
956#endif
880 } 957 }
881 958
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
883 ecb_function_ int 960 ecb_function_ ecb_const int
884 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
885 { 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
886 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
888 } 971 }
889 972
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
891 ecb_function_ int 974 ecb_function_ ecb_const int
892 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
893 { 976 {
894 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101; 980 x *= 0x01010101;
898 981
899 return x >> 24; 982 return x >> 24;
900 } 983 }
901 984
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
903 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
904 { 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
905 int r = 0; 993 int r = 0;
906 994
907 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
912 1000
913 return r; 1001 return r;
1002#endif
914 } 1003 }
915 1004
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
917 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
918 { 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
919 int r = 0; 1013 int r = 0;
920 1014
921 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
922 1016
923 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
924 } 1019 }
925#endif 1020#endif
926 1021
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
928ecb_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)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
930ecb_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)); }
931 1026
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
934{ 1029{
935 return ( (x * 0x0802U & 0x22110U) 1030 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937} 1032}
938 1033
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
941{ 1036{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8); 1040 x = ( x >> 8 ) | ( x << 8);
946 1041
947 return x; 1042 return x;
948} 1043}
949 1044
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
952{ 1047{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
959 return x; 1054 return x;
960} 1055}
961 1056
962/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */ 1058/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
965ecb_function_ int 1060ecb_function_ ecb_const int
966ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
967{ 1062{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969} 1064}
970 1065
971ecb_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);
972ecb_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);
973ecb_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);
974ecb_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);
975ecb_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);
976ecb_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);
977ecb_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);
978ecb_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);
979 1074
980ecb_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); }
981ecb_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); }
982ecb_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); }
983ecb_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); }
984ecb_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); }
985ecb_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); }
986ecb_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); }
987ecb_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); }
988 1083
989#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
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
991 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #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)))
993#else 1097#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
995 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
996 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
997 { 1101 {
998 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
999 } 1103 }
1000 1104
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1002 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
1003 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
1004 { 1108 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 } 1110 }
1007 1111
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1009 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
1010 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
1011 { 1115 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 } 1117 }
1014#endif 1118#endif
1015 1119
1016#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1017 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
1018#else 1122#else
1019 /* 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 :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1021 ecb_inline void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1022#endif 1126#endif
1023 1127
1024/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026 1130
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1028ecb_inline unsigned char 1132ecb_inline ecb_const uint32_t
1029ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
1030{ 1134{
1031 /* the union code still generates code under pressure in gcc, */ 1135 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */ 1136 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */ 1137 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */ 1138 /* the reason why we have this horrible preprocessor mess */
1035 /* 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 */
1036 /* or when using a recent enough gcc version (>= 4.6) */ 1140 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#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
1040 return 0x44; 1144 return 0x44332211;
1041#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
1042 return 0x11; 1148 return 0x11223344;
1043#else 1149#else
1044 union 1150 union
1045 { 1151 {
1152 uint8_t c[4];
1046 uint32_t i; 1153 uint32_t u;
1047 uint8_t c;
1048 } u = { 0x11223344 }; 1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1049 return u.c; 1155 return u.u;
1050#endif 1156#endif
1051} 1157}
1052 1158
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1054ecb_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; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1056ecb_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; }
1057 1163
1058#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #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))
1060#else 1166#else
1061 #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)))
1062#endif 1168#endif
1063 1169
1064#if __cplusplus 1170#if ECB_CPP
1065 template<typename T> 1171 template<typename T>
1066 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
1067 { 1173 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 } 1175 }
… …
1086 } 1192 }
1087#else 1193#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif 1195#endif
1090 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
1091/*******************************************************************************/ 1293/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093 1295
1094/* basically, everything uses "ieee pure-endian" floating point numbers */ 1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \ 1298#if 0 \
1097 || __i386 || __i386__ \ 1299 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1300 || ECB_GCC_AMD64 \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \ 1302 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \ 1303 || defined __mips__ \
1102 || defined __alpha__ \ 1304 || defined __alpha__ \
1103 || defined __hppa__ \ 1305 || defined __hppa__ \
1104 || defined __ia64__ \ 1306 || defined __ia64__ \
1105 || defined __m68k__ \ 1307 || defined __m68k__ \
1106 || defined __m88k__ \ 1308 || defined __m88k__ \
1107 || defined __sh__ \ 1309 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__ 1312 || defined __aarch64__
1111 #define ECB_STDFP 1 1313 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */ 1314 #include <string.h> /* for memcpy */
1113#else 1315#else
… …
1129 #define ECB_NAN NAN 1331 #define ECB_NAN NAN
1130 #else 1332 #else
1131 #define ECB_NAN ECB_INFINITY 1333 #define ECB_NAN ECB_INFINITY
1132 #endif 1334 #endif
1133 1335
1134 /* converts an ieee half/binary16 to a float */ 1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1136 ecb_function_ float 1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1137 ecb_binary16_to_float (uint16_t x) 1339 #else
1138 { 1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1139 int e = (x >> 10) & 0x1f; 1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1140 int m = x & 0x3ff; 1342 #endif
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150 1343
1151 /* convert a float to ieee single/binary32 */ 1344 /* convert a float to ieee single/binary32 */
1152 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);
1153 ecb_function_ uint32_t 1346 ecb_function_ ecb_const uint32_t
1154 ecb_float_to_binary32 (float x) 1347 ecb_float_to_binary32 (float x)
1155 { 1348 {
1156 uint32_t r; 1349 uint32_t r;
1157 1350
1158 #if ECB_STDFP 1351 #if ECB_STDFP
… …
1165 if (x == 0e0f ) return 0x00000000U; 1358 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU; 1361 if (x != x ) return 0x7fbfffffU;
1169 1362
1170 m = frexpf (x, &e) * 0x1000000U; 1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1171 1364
1172 r = m & 0x80000000U; 1365 r = m & 0x80000000U;
1173 1366
1174 if (r) 1367 if (r)
1175 m = -m; 1368 m = -m;
… …
1187 1380
1188 return r; 1381 return r;
1189 } 1382 }
1190 1383
1191 /* converts an ieee single/binary32 to a float */ 1384 /* converts an ieee single/binary32 to a float */
1192 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);
1193 ecb_function_ float 1386 ecb_function_ ecb_const float
1194 ecb_binary32_to_float (uint32_t x) 1387 ecb_binary32_to_float (uint32_t x)
1195 { 1388 {
1196 float r; 1389 float r;
1197 1390
1198 #if ECB_STDFP 1391 #if ECB_STDFP
… …
1208 x |= 0x800000U; 1401 x |= 0x800000U;
1209 else 1402 else
1210 e = 1; 1403 e = 1;
1211 1404
1212 /* 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 */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1214 1407
1215 r = neg ? -r : r; 1408 r = neg ? -r : r;
1216 #endif 1409 #endif
1217 1410
1218 return r; 1411 return r;
1219 } 1412 }
1220 1413
1221 /* convert a double to ieee double/binary64 */ 1414 /* convert a double to ieee double/binary64 */
1222 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);
1223 ecb_function_ uint64_t 1416 ecb_function_ ecb_const uint64_t
1224 ecb_double_to_binary64 (double x) 1417 ecb_double_to_binary64 (double x)
1225 { 1418 {
1226 uint64_t r; 1419 uint64_t r;
1227 1420
1228 #if ECB_STDFP 1421 #if ECB_STDFP
… …
1257 1450
1258 return r; 1451 return r;
1259 } 1452 }
1260 1453
1261 /* converts an ieee double/binary64 to a double */ 1454 /* converts an ieee double/binary64 to a double */
1262 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);
1263 ecb_function_ double 1456 ecb_function_ ecb_const double
1264 ecb_binary64_to_double (uint64_t x) 1457 ecb_binary64_to_double (uint64_t x)
1265 { 1458 {
1266 double r; 1459 double r;
1267 1460
1268 #if ECB_STDFP 1461 #if ECB_STDFP
… …
1284 1477
1285 r = neg ? -r : r; 1478 r = neg ? -r : r;
1286 #endif 1479 #endif
1287 1480
1288 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));
1289 } 1498 }
1290 1499
1291#endif 1500#endif
1292 1501
1293#endif 1502#endif
… …
1318#define inline_size ecb_inline 1527#define inline_size ecb_inline
1319 1528
1320#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
1321# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
1322#else 1531#else
1323# define inline_speed static noinline 1532# define inline_speed noinline static
1324#endif 1533#endif
1325 1534
1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1327 1536
1328#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
1375#else 1584#else
1376 1585
1377#include <float.h> 1586#include <float.h>
1378 1587
1379/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1380static ev_tstamp noinline 1590static ev_tstamp
1381ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
1382{ 1592{
1383 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1417 1627
1418#ifdef __linux 1628#ifdef __linux
1419# include <sys/utsname.h> 1629# include <sys/utsname.h>
1420#endif 1630#endif
1421 1631
1422static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1423ev_linux_version (void) 1634ev_linux_version (void)
1424{ 1635{
1425#ifdef __linux 1636#ifdef __linux
1426 unsigned int v = 0; 1637 unsigned int v = 0;
1427 struct utsname buf; 1638 struct utsname buf;
… …
1456} 1667}
1457 1668
1458/*****************************************************************************/ 1669/*****************************************************************************/
1459 1670
1460#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1461static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1462ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1463{ 1675{
1464 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1465} 1677}
1466#endif 1678#endif
1467 1679
1468static void (*syserr_cb)(const char *msg) EV_THROW; 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1469 1681
1470void ecb_cold 1682ecb_cold
1683void
1471ev_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
1472{ 1685{
1473 syserr_cb = cb; 1686 syserr_cb = cb;
1474} 1687}
1475 1688
1476static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1477ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1478{ 1692{
1479 if (!msg) 1693 if (!msg)
1480 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1481 1695
… …
1512 return 0; 1726 return 0;
1513} 1727}
1514 1728
1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1516 1730
1517void ecb_cold 1731ecb_cold
1732void
1518ev_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
1519{ 1734{
1520 alloc = cb; 1735 alloc = cb;
1521} 1736}
1522 1737
… …
1731 } 1946 }
1732 1947
1733 return ncur; 1948 return ncur;
1734} 1949}
1735 1950
1736static void * noinline ecb_cold 1951noinline ecb_cold
1952static void *
1737array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
1738{ 1954{
1739 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
1740 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
1741} 1957}
… …
1744 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1745 1961
1746#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
1747 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
1748 { \ 1964 { \
1749 int ecb_unused ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
1750 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
1751 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
1752 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
1753 } 1969 }
1754 1970
… …
1766 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
1767 1983
1768/*****************************************************************************/ 1984/*****************************************************************************/
1769 1985
1770/* dummy callback for pending events */ 1986/* dummy callback for pending events */
1771static void noinline 1987noinline
1988static void
1772pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
1773{ 1990{
1774} 1991}
1775 1992
1776void noinline 1993noinline
1994void
1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1778{ 1996{
1779 W w_ = (W)w; 1997 W w_ = (W)w;
1780 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
1781 1999
… …
1911 2129
1912 fdchangecnt = 0; 2130 fdchangecnt = 0;
1913} 2131}
1914 2132
1915/* something about the given fd changed */ 2133/* something about the given fd changed */
1916inline_size void 2134inline_size
2135void
1917fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1918{ 2137{
1919 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1920 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1921 2140
… …
1926 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1927 } 2146 }
1928} 2147}
1929 2148
1930/* 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 */
1931inline_speed void ecb_cold 2150inline_speed ecb_cold void
1932fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1933{ 2152{
1934 ev_io *w; 2153 ev_io *w;
1935 2154
1936 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1939 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);
1940 } 2159 }
1941} 2160}
1942 2161
1943/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1944inline_size int ecb_cold 2163inline_size ecb_cold int
1945fd_valid (int fd) 2164fd_valid (int fd)
1946{ 2165{
1947#ifdef _WIN32 2166#ifdef _WIN32
1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1949#else 2168#else
1950 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1951#endif 2170#endif
1952} 2171}
1953 2172
1954/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1955static void noinline ecb_cold 2174noinline ecb_cold
2175static void
1956fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1957{ 2177{
1958 int fd; 2178 int fd;
1959 2179
1960 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1962 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1963 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1964} 2184}
1965 2185
1966/* 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 */
1967static void noinline ecb_cold 2187noinline ecb_cold
2188static void
1968fd_enomem (EV_P) 2189fd_enomem (EV_P)
1969{ 2190{
1970 int fd; 2191 int fd;
1971 2192
1972 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1976 break; 2197 break;
1977 } 2198 }
1978} 2199}
1979 2200
1980/* 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 */
1981static void noinline 2202noinline
2203static void
1982fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1983{ 2205{
1984 int fd; 2206 int fd;
1985 2207
1986 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
2167 2389
2168/*****************************************************************************/ 2390/*****************************************************************************/
2169 2391
2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2171 2393
2172static void noinline ecb_cold 2394noinline ecb_cold
2395static void
2173evpipe_init (EV_P) 2396evpipe_init (EV_P)
2174{ 2397{
2175 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
2176 { 2399 {
2177 int fds [2]; 2400 int fds [2];
… …
2355#endif 2578#endif
2356 2579
2357 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
2358} 2581}
2359 2582
2360void noinline 2583noinline
2584void
2361ev_feed_signal_event (EV_P_ int signum) EV_THROW 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
2362{ 2586{
2363 WL w; 2587 WL w;
2364 2588
2365 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
… …
2482#endif 2706#endif
2483#if EV_USE_SELECT 2707#if EV_USE_SELECT
2484# include "ev_select.c" 2708# include "ev_select.c"
2485#endif 2709#endif
2486 2710
2487int ecb_cold 2711ecb_cold int
2488ev_version_major (void) EV_THROW 2712ev_version_major (void) EV_THROW
2489{ 2713{
2490 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
2491} 2715}
2492 2716
2493int ecb_cold 2717ecb_cold int
2494ev_version_minor (void) EV_THROW 2718ev_version_minor (void) EV_THROW
2495{ 2719{
2496 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
2497} 2721}
2498 2722
2499/* 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 */
2500int inline_size ecb_cold 2724inline_size ecb_cold int
2501enable_secure (void) 2725enable_secure (void)
2502{ 2726{
2503#ifdef _WIN32 2727#ifdef _WIN32
2504 return 0; 2728 return 0;
2505#else 2729#else
2506 return getuid () != geteuid () 2730 return getuid () != geteuid ()
2507 || getgid () != getegid (); 2731 || getgid () != getegid ();
2508#endif 2732#endif
2509} 2733}
2510 2734
2511unsigned int ecb_cold 2735ecb_cold
2736unsigned int
2512ev_supported_backends (void) EV_THROW 2737ev_supported_backends (void) EV_THROW
2513{ 2738{
2514 unsigned int flags = 0; 2739 unsigned int flags = 0;
2515 2740
2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2521 2746
2522 return flags; 2747 return flags;
2523} 2748}
2524 2749
2525unsigned int ecb_cold 2750ecb_cold
2751unsigned int
2526ev_recommended_backends (void) EV_THROW 2752ev_recommended_backends (void) EV_THROW
2527{ 2753{
2528 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
2529 2755
2530#ifndef __NetBSD__ 2756#ifndef __NetBSD__
… …
2542#endif 2768#endif
2543 2769
2544 return flags; 2770 return flags;
2545} 2771}
2546 2772
2547unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2548ev_embeddable_backends (void) EV_THROW 2775ev_embeddable_backends (void) EV_THROW
2549{ 2776{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2551 2778
2552 /* 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 */
… …
2604{ 2831{
2605 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
2606} 2833}
2607 2834
2608void 2835void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2610{ 2837{
2611 release_cb = release; 2838 release_cb = release;
2612 acquire_cb = acquire; 2839 acquire_cb = acquire;
2613} 2840}
2614#endif 2841#endif
2615 2842
2616/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
2617static void noinline ecb_cold 2844noinline ecb_cold
2845static void
2618loop_init (EV_P_ unsigned int flags) EV_THROW 2846loop_init (EV_P_ unsigned int flags) EV_THROW
2619{ 2847{
2620 if (!backend) 2848 if (!backend)
2621 { 2849 {
2622 origflags = flags; 2850 origflags = flags;
… …
2709#endif 2937#endif
2710 } 2938 }
2711} 2939}
2712 2940
2713/* free up a loop structure */ 2941/* free up a loop structure */
2714void ecb_cold 2942ecb_cold
2943void
2715ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
2716{ 2945{
2717 int i; 2946 int i;
2718 2947
2719#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2840#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2841 infy_fork (EV_A); 3070 infy_fork (EV_A);
2842#endif 3071#endif
2843 3072
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2845 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
2846 { 3075 {
2847 /* 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 */
2848 3077
2849 ev_ref (EV_A); 3078 ev_ref (EV_A);
2850 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
… …
2861 postfork = 0; 3090 postfork = 0;
2862} 3091}
2863 3092
2864#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
2865 3094
3095ecb_cold
2866struct ev_loop * ecb_cold 3096struct ev_loop *
2867ev_loop_new (unsigned int flags) EV_THROW 3097ev_loop_new (unsigned int flags) EV_THROW
2868{ 3098{
2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2870 3100
2871 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2879} 3109}
2880 3110
2881#endif /* multiplicity */ 3111#endif /* multiplicity */
2882 3112
2883#if EV_VERIFY 3113#if EV_VERIFY
2884static void noinline ecb_cold 3114noinline ecb_cold
3115static void
2885verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
2886{ 3117{
2887 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));
2888 3119
2889 if (w->pending) 3120 if (w->pending)
2890 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));
2891} 3122}
2892 3123
2893static void noinline ecb_cold 3124noinline ecb_cold
3125static void
2894verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
2895{ 3127{
2896 int i; 3128 int i;
2897 3129
2898 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2903 3135
2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2905 } 3137 }
2906} 3138}
2907 3139
2908static void noinline ecb_cold 3140noinline ecb_cold
3141static void
2909array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
2910{ 3143{
2911 while (cnt--) 3144 while (cnt--)
2912 { 3145 {
2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
3002#endif 3235#endif
3003} 3236}
3004#endif 3237#endif
3005 3238
3006#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
3007struct ev_loop * ecb_cold 3241struct ev_loop *
3008#else 3242#else
3009int 3243int
3010#endif 3244#endif
3011ev_default_loop (unsigned int flags) EV_THROW 3245ev_default_loop (unsigned int flags) EV_THROW
3012{ 3246{
… …
3060 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
3061 3295
3062 return count; 3296 return count;
3063} 3297}
3064 3298
3065void noinline 3299noinline
3300void
3066ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
3067{ 3302{
3068 pendingpri = NUMPRI; 3303 pendingpri = NUMPRI;
3069 3304
3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
… …
3145 } 3380 }
3146} 3381}
3147 3382
3148#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
3149 3384
3150static void noinline 3385noinline
3386static void
3151periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
3152{ 3388{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 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);
3155 3391
… …
3213 } 3449 }
3214} 3450}
3215 3451
3216/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
3217/* 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? */
3218static void noinline ecb_cold 3454noinline ecb_cold
3455static void
3219periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
3220{ 3457{
3221 int i; 3458 int i;
3222 3459
3223 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
3236 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
3237} 3474}
3238#endif 3475#endif
3239 3476
3240/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
3241static void noinline ecb_cold 3478noinline ecb_cold
3479static void
3242timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
3243{ 3481{
3244 int i; 3482 int i;
3245 3483
3246 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
3614 w->active = 0; 3852 w->active = 0;
3615} 3853}
3616 3854
3617/*****************************************************************************/ 3855/*****************************************************************************/
3618 3856
3619void noinline 3857noinline
3858void
3620ev_io_start (EV_P_ ev_io *w) EV_THROW 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
3621{ 3860{
3622 int fd = w->fd; 3861 int fd = w->fd;
3623 3862
3624 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
… …
3640 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
3641 3880
3642 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
3643} 3882}
3644 3883
3645void noinline 3884noinline
3885void
3646ev_io_stop (EV_P_ ev_io *w) EV_THROW 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
3647{ 3887{
3648 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
3649 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
3650 return; 3890 return;
… …
3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3660 3900
3661 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3662} 3902}
3663 3903
3664void noinline 3904noinline
3905void
3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3666{ 3907{
3667 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3668 return; 3909 return;
3669 3910
… …
3683 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3684 3925
3685 /*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));*/
3686} 3927}
3687 3928
3688void noinline 3929noinline
3930void
3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3690{ 3932{
3691 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3692 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3693 return; 3935 return;
… …
3713 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
3714 3956
3715 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3716} 3958}
3717 3959
3718void noinline 3960noinline
3961void
3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3720{ 3963{
3721 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3722 3965
3723 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
… …
3747{ 3990{
3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3749} 3992}
3750 3993
3751#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
3752void noinline 3995noinline
3996void
3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3754{ 3998{
3755 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3756 return; 4000 return;
3757 4001
… …
3777 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3778 4022
3779 /*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));*/
3780} 4024}
3781 4025
3782void noinline 4026noinline
4027void
3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3784{ 4029{
3785 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3786 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
3787 return; 4032 return;
… …
3805 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3806 4051
3807 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3808} 4053}
3809 4054
3810void noinline 4055noinline
4056void
3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3812{ 4058{
3813 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
3814 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
3815 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
… …
3820# define SA_RESTART 0 4066# define SA_RESTART 0
3821#endif 4067#endif
3822 4068
3823#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
3824 4070
3825void noinline 4071noinline
4072void
3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3827{ 4074{
3828 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3829 return; 4076 return;
3830 4077
… …
3902 } 4149 }
3903 4150
3904 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
3905} 4152}
3906 4153
3907void noinline 4154noinline
4155void
3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3909{ 4157{
3910 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
3911 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
3912 return; 4160 return;
… …
3988 4236
3989#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3990#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3991#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3992 4240
3993static 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);
3994 4242
3995#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3996 4244
3997/* 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 */
3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3999 4247
4000static void noinline 4248noinline
4249static void
4001infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
4002{ 4251{
4003 w->wd = inotify_add_watch (fs_fd, w->path, 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4069 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4070 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
4071 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4072} 4321}
4073 4322
4074static void noinline 4323noinline
4324static void
4075infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
4076{ 4326{
4077 int slot; 4327 int slot;
4078 int wd = w->wd; 4328 int wd = w->wd;
4079 4329
… …
4086 4336
4087 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
4088 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
4089} 4339}
4090 4340
4091static void noinline 4341noinline
4342static void
4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4093{ 4344{
4094 if (slot < 0) 4345 if (slot < 0)
4095 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4132 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4133 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
4134 } 4385 }
4135} 4386}
4136 4387
4137inline_size void ecb_cold 4388inline_size ecb_cold
4389void
4138ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
4139{ 4391{
4140 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
4141 * 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
4142 */ 4394 */
… …
4240 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
4241 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
4242 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
4243} 4495}
4244 4496
4245static void noinline 4497noinline
4498static void
4246stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4247{ 4500{
4248 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4249 4502
4250 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
4460 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
4461} 4714}
4462#endif 4715#endif
4463 4716
4464#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
4465void noinline 4718noinline
4719void
4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4467{ 4721{
4468 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
4469} 4723}
4470 4724
… …
4767} 5021}
4768 5022
4769/*****************************************************************************/ 5023/*****************************************************************************/
4770 5024
4771#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
4772void ecb_cold 5026ecb_cold
5027void
4773ev_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
4774{ 5029{
4775 int i, j; 5030 int i, j;
4776 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
4777 5032

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