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Comparing libev/ev.c (file contents):
Revision 1.470 by root, Sun Sep 7 13:44:21 2014 UTC vs.
Revision 1.482 by root, Sat Jul 28 04:15:15 2018 UTC

… …
363 363
364#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif 366#endif
367 367
368#ifdef ANDROID 368#ifdef __ANDROID__
369/* supposedly, android doesn't typedef fd_mask */ 369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT 370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0 371# define EV_USE_SELECT 0
372/* 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 */
373# undef EV_USE_CLOCK_SYSCALL 373# undef EV_USE_CLOCK_SYSCALL
… …
491/* 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 */
492/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
493/* 493/*
494 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
495 * 495 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved. 498 * All rights reserved.
499 * 499 *
500 * 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-
501 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
532 532
533#ifndef ECB_H 533#ifndef ECB_H
534#define ECB_H 534#define ECB_H
535 535
536/* 16 bits major, 16 bits minor */ 536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003 537#define ECB_VERSION 0x00010005
538 538
539#ifdef _WIN32 539#ifdef _WIN32
540 typedef signed char int8_t; 540 typedef signed char int8_t;
541 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
542 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
559 typedef uint32_t uintptr_t; 559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t; 560 typedef int32_t intptr_t;
561 #endif 561 #endif
562#else 562#else
563 #include <inttypes.h> 563 #include <inttypes.h>
564 #if UINTMAX_MAX > 0xffffffffU 564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8 565 #define ECB_PTRSIZE 8
566 #else 566 #else
567 #define ECB_PTRSIZE 4 567 #define ECB_PTRSIZE 4
568 #endif 568 #endif
569#endif 569#endif
570 570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
571/* work around x32 idiocy by defining proper macros */ 574/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
573 #if _ILP32 576 #if _ILP32
574 #define ECB_AMD64_X32 1 577 #define ECB_AMD64_X32 1
575 #else 578 #else
576 #define ECB_AMD64 1 579 #define ECB_AMD64 1
577 #endif 580 #endif
… …
582 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so. 586 * or so.
584 * 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
585 * 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.
586 */ 589 */
587#ifndef ECB_GCC_VERSION
588 #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__
589 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
590 #else 592#else
591 #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)))
592 #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
593#endif 608#endif
594 609
595#define ECB_CPP (__cplusplus+0) 610#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L) 611#define ECB_CPP11 (__cplusplus >= 201103L)
597 612
… …
625 #define ECB_NO_SMP 1 640 #define ECB_NO_SMP 1
626#endif 641#endif
627 642
628#if ECB_NO_SMP 643#if ECB_NO_SMP
629 #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 */
630#endif 654#endif
631 655
632#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
633 #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
634 #if __i386 || __i386__ 658 #if __i386 || __i386__
635 #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")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 662 #elif ECB_GCC_AMD64
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #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 */
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
646 #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")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__ 682 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8 684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
653 #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")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__ 688 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
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681 /* see comment below (stdatomic.h) about the C11 memory model. */ 713 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685 717
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 718 #elif ECB_CLANG_EXTENSION(c_atomic)
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model. 719 /* see comment below (stdatomic.h) about the C11 memory model. */
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696 723
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* 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... */
… …
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif 791#endif
765 792
766/*****************************************************************************/ 793/*****************************************************************************/
767 794
768#if __cplusplus 795#if ECB_CPP
769 #define ecb_inline static inline 796 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
772#elif ECB_C99 799#elif ECB_C99
773 #define ecb_inline static inline 800 #define ecb_inline static inline
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787 814
788#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
791#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))
792 820
793#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
794 822
795#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
796 #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)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else 831#else
801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types 832 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #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)) */
806 835
807 #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
808 #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
809 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
810#endif 849#endif
811 850
812/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
813#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; };
814 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
815#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
816 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
817#endif 858#endif
818 859
819#if _MSC_VER >= 1300 860#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated) 861 #define ecb_deprecated __declspec (deprecated)
821#else 862#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__)) 863 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif 864#endif
824 865
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
825#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
878#endif
879
826#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
829 883
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ 884#if ECB_C11 || __IBMC_NORETURN
831#if ECB_C11 885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
832 #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)
833#else 892#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__)) 893 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif 894#endif
836 895
837#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
… …
852/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
855 914
856/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
857#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))
858 /* 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 */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */ 926 /* no popcountll */
865#else 927#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
867 ecb_function_ int 929 ecb_function_ ecb_const int
868 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
869 { 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
870 int r = 0; 937 int r = 0;
871 938
872 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
873 940
874#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
884 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
886#endif 953#endif
887 954
888 return r; 955 return r;
956#endif
889 } 957 }
890 958
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
892 ecb_function_ int 960 ecb_function_ ecb_const int
893 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
894 { 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
895 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
897 } 971 }
898 972
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
900 ecb_function_ int 974 ecb_function_ ecb_const int
901 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
902 { 976 {
903 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101; 980 x *= 0x01010101;
907 981
908 return x >> 24; 982 return x >> 24;
909 } 983 }
910 984
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
912 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
913 { 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
914 int r = 0; 993 int r = 0;
915 994
916 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
921 1000
922 return r; 1001 return r;
1002#endif
923 } 1003 }
924 1004
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
926 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
927 { 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
928 int r = 0; 1013 int r = 0;
929 1014
930 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
931 1016
932 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
933 } 1019 }
934#endif 1020#endif
935 1021
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
937ecb_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)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
939ecb_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)); }
940 1026
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
943{ 1029{
944 return ( (x * 0x0802U & 0x22110U) 1030 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946} 1032}
947 1033
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
950{ 1036{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8); 1040 x = ( x >> 8 ) | ( x << 8);
955 1041
956 return x; 1042 return x;
957} 1043}
958 1044
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
961{ 1047{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
968 return x; 1054 return x;
969} 1055}
970 1056
971/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */ 1058/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
974ecb_function_ int 1060ecb_function_ ecb_const int
975ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
976{ 1062{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978} 1064}
979 1065
980ecb_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);
981ecb_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);
982ecb_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);
983ecb_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);
984ecb_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);
985ecb_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);
986ecb_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);
987ecb_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);
988 1074
989ecb_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); }
990ecb_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); }
991ecb_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); }
992ecb_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); }
993ecb_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); }
994ecb_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); }
995ecb_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); }
996ecb_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); }
997 1083
998#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
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
1000 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #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)))
1002#else 1097#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1004 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
1005 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
1006 { 1101 {
1007 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
1008 } 1103 }
1009 1104
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1011 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
1012 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
1013 { 1108 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 } 1110 }
1016 1111
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1018 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
1019 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
1020 { 1115 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 } 1117 }
1023#endif 1118#endif
1024 1119
1025#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1026 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
1027#else 1122#else
1028 /* 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 :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
1030 ecb_inline void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1031#endif 1126#endif
1032 1127
1033/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035 1130
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1037ecb_inline unsigned char 1132ecb_inline ecb_const uint32_t
1038ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
1039{ 1134{
1040 /* the union code still generates code under pressure in gcc, */ 1135 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */ 1136 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */ 1137 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */ 1138 /* the reason why we have this horrible preprocessor mess */
1044 /* 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 */
1045 /* or when using a recent enough gcc version (>= 4.6) */ 1140 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#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
1049 return 0x44; 1144 return 0x44332211;
1050#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
1051 return 0x11; 1148 return 0x11223344;
1052#else 1149#else
1053 union 1150 union
1054 { 1151 {
1152 uint8_t c[4];
1055 uint32_t i; 1153 uint32_t u;
1056 uint8_t c;
1057 } u = { 0x11223344 }; 1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1058 return u.c; 1155 return u.u;
1059#endif 1156#endif
1060} 1157}
1061 1158
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1063ecb_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; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1065ecb_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; }
1066 1163
1067#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #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))
1069#else 1166#else
1070 #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)))
1071#endif 1168#endif
1072 1169
1073#if __cplusplus 1170#if ECB_CPP
1074 template<typename T> 1171 template<typename T>
1075 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
1076 { 1173 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 } 1175 }
… …
1095 } 1192 }
1096#else 1193#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif 1195#endif
1099 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
1100/*******************************************************************************/ 1293/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102 1295
1103/* basically, everything uses "ieee pure-endian" floating point numbers */ 1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \ 1298#if 0 \
1106 || __i386 || __i386__ \ 1299 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1300 || ECB_GCC_AMD64 \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \ 1302 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \ 1303 || defined __mips__ \
1111 || defined __alpha__ \ 1304 || defined __alpha__ \
1112 || defined __hppa__ \ 1305 || defined __hppa__ \
1113 || defined __ia64__ \ 1306 || defined __ia64__ \
1114 || defined __m68k__ \ 1307 || defined __m68k__ \
1115 || defined __m88k__ \ 1308 || defined __m88k__ \
1116 || defined __sh__ \ 1309 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1118 || (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__)) \
1119 || defined __aarch64__ 1312 || defined __aarch64__
1120 #define ECB_STDFP 1 1313 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */ 1314 #include <string.h> /* for memcpy */
1122#else 1315#else
… …
1138 #define ECB_NAN NAN 1331 #define ECB_NAN NAN
1139 #else 1332 #else
1140 #define ECB_NAN ECB_INFINITY 1333 #define ECB_NAN ECB_INFINITY
1141 #endif 1334 #endif
1142 1335
1143 /* converts an ieee half/binary16 to a float */ 1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1145 ecb_function_ float 1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1146 ecb_binary16_to_float (uint16_t x) 1339 #else
1147 { 1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1148 int e = (x >> 10) & 0x1f; 1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1149 int m = x & 0x3ff; 1342 #endif
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159 1343
1160 /* convert a float to ieee single/binary32 */ 1344 /* convert a float to ieee single/binary32 */
1161 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);
1162 ecb_function_ uint32_t 1346 ecb_function_ ecb_const uint32_t
1163 ecb_float_to_binary32 (float x) 1347 ecb_float_to_binary32 (float x)
1164 { 1348 {
1165 uint32_t r; 1349 uint32_t r;
1166 1350
1167 #if ECB_STDFP 1351 #if ECB_STDFP
… …
1174 if (x == 0e0f ) return 0x00000000U; 1358 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU; 1361 if (x != x ) return 0x7fbfffffU;
1178 1362
1179 m = frexpf (x, &e) * 0x1000000U; 1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1180 1364
1181 r = m & 0x80000000U; 1365 r = m & 0x80000000U;
1182 1366
1183 if (r) 1367 if (r)
1184 m = -m; 1368 m = -m;
… …
1196 1380
1197 return r; 1381 return r;
1198 } 1382 }
1199 1383
1200 /* converts an ieee single/binary32 to a float */ 1384 /* converts an ieee single/binary32 to a float */
1201 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);
1202 ecb_function_ float 1386 ecb_function_ ecb_const float
1203 ecb_binary32_to_float (uint32_t x) 1387 ecb_binary32_to_float (uint32_t x)
1204 { 1388 {
1205 float r; 1389 float r;
1206 1390
1207 #if ECB_STDFP 1391 #if ECB_STDFP
… …
1217 x |= 0x800000U; 1401 x |= 0x800000U;
1218 else 1402 else
1219 e = 1; 1403 e = 1;
1220 1404
1221 /* 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 */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1223 1407
1224 r = neg ? -r : r; 1408 r = neg ? -r : r;
1225 #endif 1409 #endif
1226 1410
1227 return r; 1411 return r;
1228 } 1412 }
1229 1413
1230 /* convert a double to ieee double/binary64 */ 1414 /* convert a double to ieee double/binary64 */
1231 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);
1232 ecb_function_ uint64_t 1416 ecb_function_ ecb_const uint64_t
1233 ecb_double_to_binary64 (double x) 1417 ecb_double_to_binary64 (double x)
1234 { 1418 {
1235 uint64_t r; 1419 uint64_t r;
1236 1420
1237 #if ECB_STDFP 1421 #if ECB_STDFP
… …
1266 1450
1267 return r; 1451 return r;
1268 } 1452 }
1269 1453
1270 /* converts an ieee double/binary64 to a double */ 1454 /* converts an ieee double/binary64 to a double */
1271 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);
1272 ecb_function_ double 1456 ecb_function_ ecb_const double
1273 ecb_binary64_to_double (uint64_t x) 1457 ecb_binary64_to_double (uint64_t x)
1274 { 1458 {
1275 double r; 1459 double r;
1276 1460
1277 #if ECB_STDFP 1461 #if ECB_STDFP
… …
1293 1477
1294 r = neg ? -r : r; 1478 r = neg ? -r : r;
1295 #endif 1479 #endif
1296 1480
1297 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));
1298 } 1498 }
1299 1499
1300#endif 1500#endif
1301 1501
1302#endif 1502#endif
… …
1327#define inline_size ecb_inline 1527#define inline_size ecb_inline
1328 1528
1329#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
1330# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
1331#else 1531#else
1332# define inline_speed static noinline 1532# define inline_speed noinline static
1333#endif 1533#endif
1334 1534
1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1336 1536
1337#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
1384#else 1584#else
1385 1585
1386#include <float.h> 1586#include <float.h>
1387 1587
1388/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1389static ev_tstamp noinline 1590static ev_tstamp
1390ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
1391{ 1592{
1392 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1426 1627
1427#ifdef __linux 1628#ifdef __linux
1428# include <sys/utsname.h> 1629# include <sys/utsname.h>
1429#endif 1630#endif
1430 1631
1431static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1432ev_linux_version (void) 1634ev_linux_version (void)
1433{ 1635{
1434#ifdef __linux 1636#ifdef __linux
1435 unsigned int v = 0; 1637 unsigned int v = 0;
1436 struct utsname buf; 1638 struct utsname buf;
… …
1465} 1667}
1466 1668
1467/*****************************************************************************/ 1669/*****************************************************************************/
1468 1670
1469#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1470static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1471ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1472{ 1675{
1473 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1474} 1677}
1475#endif 1678#endif
1476 1679
1477static void (*syserr_cb)(const char *msg) EV_THROW; 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1478 1681
1479void ecb_cold 1682ecb_cold
1683void
1480ev_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
1481{ 1685{
1482 syserr_cb = cb; 1686 syserr_cb = cb;
1483} 1687}
1484 1688
1485static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1486ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1487{ 1692{
1488 if (!msg) 1693 if (!msg)
1489 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1490 1695
… …
1521 return 0; 1726 return 0;
1522} 1727}
1523 1728
1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1525 1730
1526void ecb_cold 1731ecb_cold
1732void
1527ev_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
1528{ 1734{
1529 alloc = cb; 1735 alloc = cb;
1530} 1736}
1531 1737
… …
1700 struct timespec ts; 1906 struct timespec ts;
1701 1907
1702 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
1703 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
1704#elif defined _WIN32 1910#elif defined _WIN32
1911 /* maybe this should round up, as ms is very low resolution */
1912 /* compared to select (µs) or nanosleep (ns) */
1705 Sleep ((unsigned long)(delay * 1e3)); 1913 Sleep ((unsigned long)(delay * 1e3));
1706#else 1914#else
1707 struct timeval tv; 1915 struct timeval tv;
1708 1916
1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1917 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1740 } 1948 }
1741 1949
1742 return ncur; 1950 return ncur;
1743} 1951}
1744 1952
1745static void * noinline ecb_cold 1953noinline ecb_cold
1954static void *
1746array_realloc (int elem, void *base, int *cur, int cnt) 1955array_realloc (int elem, void *base, int *cur, int cnt)
1747{ 1956{
1748 *cur = array_nextsize (elem, *cur, cnt); 1957 *cur = array_nextsize (elem, *cur, cnt);
1749 return ev_realloc (base, elem * *cur); 1958 return ev_realloc (base, elem * *cur);
1750} 1959}
… …
1753 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1962 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1754 1963
1755#define array_needsize(type,base,cur,cnt,init) \ 1964#define array_needsize(type,base,cur,cnt,init) \
1756 if (expect_false ((cnt) > (cur))) \ 1965 if (expect_false ((cnt) > (cur))) \
1757 { \ 1966 { \
1758 int ecb_unused ocur_ = (cur); \ 1967 ecb_unused int ocur_ = (cur); \
1759 (base) = (type *)array_realloc \ 1968 (base) = (type *)array_realloc \
1760 (sizeof (type), (base), &(cur), (cnt)); \ 1969 (sizeof (type), (base), &(cur), (cnt)); \
1761 init ((base) + (ocur_), (cur) - ocur_); \ 1970 init ((base) + (ocur_), (cur) - ocur_); \
1762 } 1971 }
1763 1972
… …
1775 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1984 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1776 1985
1777/*****************************************************************************/ 1986/*****************************************************************************/
1778 1987
1779/* dummy callback for pending events */ 1988/* dummy callback for pending events */
1780static void noinline 1989noinline
1990static void
1781pendingcb (EV_P_ ev_prepare *w, int revents) 1991pendingcb (EV_P_ ev_prepare *w, int revents)
1782{ 1992{
1783} 1993}
1784 1994
1785void noinline 1995noinline
1996void
1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1997ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1787{ 1998{
1788 W w_ = (W)w; 1999 W w_ = (W)w;
1789 int pri = ABSPRI (w_); 2000 int pri = ABSPRI (w_);
1790 2001
… …
1920 2131
1921 fdchangecnt = 0; 2132 fdchangecnt = 0;
1922} 2133}
1923 2134
1924/* something about the given fd changed */ 2135/* something about the given fd changed */
1925inline_size void 2136inline_size
2137void
1926fd_change (EV_P_ int fd, int flags) 2138fd_change (EV_P_ int fd, int flags)
1927{ 2139{
1928 unsigned char reify = anfds [fd].reify; 2140 unsigned char reify = anfds [fd].reify;
1929 anfds [fd].reify |= flags; 2141 anfds [fd].reify |= flags;
1930 2142
… …
1935 fdchanges [fdchangecnt - 1] = fd; 2147 fdchanges [fdchangecnt - 1] = fd;
1936 } 2148 }
1937} 2149}
1938 2150
1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2151/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1940inline_speed void ecb_cold 2152inline_speed ecb_cold void
1941fd_kill (EV_P_ int fd) 2153fd_kill (EV_P_ int fd)
1942{ 2154{
1943 ev_io *w; 2155 ev_io *w;
1944 2156
1945 while ((w = (ev_io *)anfds [fd].head)) 2157 while ((w = (ev_io *)anfds [fd].head))
… …
1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2160 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1949 } 2161 }
1950} 2162}
1951 2163
1952/* check whether the given fd is actually valid, for error recovery */ 2164/* check whether the given fd is actually valid, for error recovery */
1953inline_size int ecb_cold 2165inline_size ecb_cold int
1954fd_valid (int fd) 2166fd_valid (int fd)
1955{ 2167{
1956#ifdef _WIN32 2168#ifdef _WIN32
1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2169 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1958#else 2170#else
1959 return fcntl (fd, F_GETFD) != -1; 2171 return fcntl (fd, F_GETFD) != -1;
1960#endif 2172#endif
1961} 2173}
1962 2174
1963/* called on EBADF to verify fds */ 2175/* called on EBADF to verify fds */
1964static void noinline ecb_cold 2176noinline ecb_cold
2177static void
1965fd_ebadf (EV_P) 2178fd_ebadf (EV_P)
1966{ 2179{
1967 int fd; 2180 int fd;
1968 2181
1969 for (fd = 0; fd < anfdmax; ++fd) 2182 for (fd = 0; fd < anfdmax; ++fd)
… …
1971 if (!fd_valid (fd) && errno == EBADF) 2184 if (!fd_valid (fd) && errno == EBADF)
1972 fd_kill (EV_A_ fd); 2185 fd_kill (EV_A_ fd);
1973} 2186}
1974 2187
1975/* called on ENOMEM in select/poll to kill some fds and retry */ 2188/* called on ENOMEM in select/poll to kill some fds and retry */
1976static void noinline ecb_cold 2189noinline ecb_cold
2190static void
1977fd_enomem (EV_P) 2191fd_enomem (EV_P)
1978{ 2192{
1979 int fd; 2193 int fd;
1980 2194
1981 for (fd = anfdmax; fd--; ) 2195 for (fd = anfdmax; fd--; )
… …
1985 break; 2199 break;
1986 } 2200 }
1987} 2201}
1988 2202
1989/* usually called after fork if backend needs to re-arm all fds from scratch */ 2203/* usually called after fork if backend needs to re-arm all fds from scratch */
1990static void noinline 2204noinline
2205static void
1991fd_rearm_all (EV_P) 2206fd_rearm_all (EV_P)
1992{ 2207{
1993 int fd; 2208 int fd;
1994 2209
1995 for (fd = 0; fd < anfdmax; ++fd) 2210 for (fd = 0; fd < anfdmax; ++fd)
… …
2176 2391
2177/*****************************************************************************/ 2392/*****************************************************************************/
2178 2393
2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2394#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2180 2395
2181static void noinline ecb_cold 2396noinline ecb_cold
2397static void
2182evpipe_init (EV_P) 2398evpipe_init (EV_P)
2183{ 2399{
2184 if (!ev_is_active (&pipe_w)) 2400 if (!ev_is_active (&pipe_w))
2185 { 2401 {
2186 int fds [2]; 2402 int fds [2];
… …
2364#endif 2580#endif
2365 2581
2366 ev_feed_signal (signum); 2582 ev_feed_signal (signum);
2367} 2583}
2368 2584
2369void noinline 2585noinline
2586void
2370ev_feed_signal_event (EV_P_ int signum) EV_THROW 2587ev_feed_signal_event (EV_P_ int signum) EV_THROW
2371{ 2588{
2372 WL w; 2589 WL w;
2373 2590
2374 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2591 if (expect_false (signum <= 0 || signum >= EV_NSIG))
… …
2491#endif 2708#endif
2492#if EV_USE_SELECT 2709#if EV_USE_SELECT
2493# include "ev_select.c" 2710# include "ev_select.c"
2494#endif 2711#endif
2495 2712
2496int ecb_cold 2713ecb_cold int
2497ev_version_major (void) EV_THROW 2714ev_version_major (void) EV_THROW
2498{ 2715{
2499 return EV_VERSION_MAJOR; 2716 return EV_VERSION_MAJOR;
2500} 2717}
2501 2718
2502int ecb_cold 2719ecb_cold int
2503ev_version_minor (void) EV_THROW 2720ev_version_minor (void) EV_THROW
2504{ 2721{
2505 return EV_VERSION_MINOR; 2722 return EV_VERSION_MINOR;
2506} 2723}
2507 2724
2508/* return true if we are running with elevated privileges and should ignore env variables */ 2725/* return true if we are running with elevated privileges and should ignore env variables */
2509int inline_size ecb_cold 2726inline_size ecb_cold int
2510enable_secure (void) 2727enable_secure (void)
2511{ 2728{
2512#ifdef _WIN32 2729#ifdef _WIN32
2513 return 0; 2730 return 0;
2514#else 2731#else
2515 return getuid () != geteuid () 2732 return getuid () != geteuid ()
2516 || getgid () != getegid (); 2733 || getgid () != getegid ();
2517#endif 2734#endif
2518} 2735}
2519 2736
2520unsigned int ecb_cold 2737ecb_cold
2738unsigned int
2521ev_supported_backends (void) EV_THROW 2739ev_supported_backends (void) EV_THROW
2522{ 2740{
2523 unsigned int flags = 0; 2741 unsigned int flags = 0;
2524 2742
2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2743 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2747 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2530 2748
2531 return flags; 2749 return flags;
2532} 2750}
2533 2751
2534unsigned int ecb_cold 2752ecb_cold
2753unsigned int
2535ev_recommended_backends (void) EV_THROW 2754ev_recommended_backends (void) EV_THROW
2536{ 2755{
2537 unsigned int flags = ev_supported_backends (); 2756 unsigned int flags = ev_supported_backends ();
2538 2757
2539#ifndef __NetBSD__ 2758#ifndef __NetBSD__
… …
2551#endif 2770#endif
2552 2771
2553 return flags; 2772 return flags;
2554} 2773}
2555 2774
2556unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2557ev_embeddable_backends (void) EV_THROW 2777ev_embeddable_backends (void) EV_THROW
2558{ 2778{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2779 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560 2780
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2781 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2613{ 2833{
2614 invoke_cb = invoke_pending_cb; 2834 invoke_cb = invoke_pending_cb;
2615} 2835}
2616 2836
2617void 2837void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 2838ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2619{ 2839{
2620 release_cb = release; 2840 release_cb = release;
2621 acquire_cb = acquire; 2841 acquire_cb = acquire;
2622} 2842}
2623#endif 2843#endif
2624 2844
2625/* initialise a loop structure, must be zero-initialised */ 2845/* initialise a loop structure, must be zero-initialised */
2626static void noinline ecb_cold 2846noinline ecb_cold
2847static void
2627loop_init (EV_P_ unsigned int flags) EV_THROW 2848loop_init (EV_P_ unsigned int flags) EV_THROW
2628{ 2849{
2629 if (!backend) 2850 if (!backend)
2630 { 2851 {
2631 origflags = flags; 2852 origflags = flags;
… …
2718#endif 2939#endif
2719 } 2940 }
2720} 2941}
2721 2942
2722/* free up a loop structure */ 2943/* free up a loop structure */
2723void ecb_cold 2944ecb_cold
2945void
2724ev_loop_destroy (EV_P) 2946ev_loop_destroy (EV_P)
2725{ 2947{
2726 int i; 2948 int i;
2727 2949
2728#if EV_MULTIPLICITY 2950#if EV_MULTIPLICITY
… …
2849#if EV_USE_INOTIFY 3071#if EV_USE_INOTIFY
2850 infy_fork (EV_A); 3072 infy_fork (EV_A);
2851#endif 3073#endif
2852 3074
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3075#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2854 if (ev_is_active (&pipe_w)) 3076 if (ev_is_active (&pipe_w) && postfork != 2)
2855 { 3077 {
2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2857 3079
2858 ev_ref (EV_A); 3080 ev_ref (EV_A);
2859 ev_io_stop (EV_A_ &pipe_w); 3081 ev_io_stop (EV_A_ &pipe_w);
… …
2870 postfork = 0; 3092 postfork = 0;
2871} 3093}
2872 3094
2873#if EV_MULTIPLICITY 3095#if EV_MULTIPLICITY
2874 3096
3097ecb_cold
2875struct ev_loop * ecb_cold 3098struct ev_loop *
2876ev_loop_new (unsigned int flags) EV_THROW 3099ev_loop_new (unsigned int flags) EV_THROW
2877{ 3100{
2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3101 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2879 3102
2880 memset (EV_A, 0, sizeof (struct ev_loop)); 3103 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2888} 3111}
2889 3112
2890#endif /* multiplicity */ 3113#endif /* multiplicity */
2891 3114
2892#if EV_VERIFY 3115#if EV_VERIFY
2893static void noinline ecb_cold 3116noinline ecb_cold
3117static void
2894verify_watcher (EV_P_ W w) 3118verify_watcher (EV_P_ W w)
2895{ 3119{
2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3120 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2897 3121
2898 if (w->pending) 3122 if (w->pending)
2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3123 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2900} 3124}
2901 3125
2902static void noinline ecb_cold 3126noinline ecb_cold
3127static void
2903verify_heap (EV_P_ ANHE *heap, int N) 3128verify_heap (EV_P_ ANHE *heap, int N)
2904{ 3129{
2905 int i; 3130 int i;
2906 3131
2907 for (i = HEAP0; i < N + HEAP0; ++i) 3132 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2912 3137
2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2914 } 3139 }
2915} 3140}
2916 3141
2917static void noinline ecb_cold 3142noinline ecb_cold
3143static void
2918array_verify (EV_P_ W *ws, int cnt) 3144array_verify (EV_P_ W *ws, int cnt)
2919{ 3145{
2920 while (cnt--) 3146 while (cnt--)
2921 { 3147 {
2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3148 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
3011#endif 3237#endif
3012} 3238}
3013#endif 3239#endif
3014 3240
3015#if EV_MULTIPLICITY 3241#if EV_MULTIPLICITY
3242ecb_cold
3016struct ev_loop * ecb_cold 3243struct ev_loop *
3017#else 3244#else
3018int 3245int
3019#endif 3246#endif
3020ev_default_loop (unsigned int flags) EV_THROW 3247ev_default_loop (unsigned int flags) EV_THROW
3021{ 3248{
… …
3069 count += pendingcnt [pri]; 3296 count += pendingcnt [pri];
3070 3297
3071 return count; 3298 return count;
3072} 3299}
3073 3300
3074void noinline 3301noinline
3302void
3075ev_invoke_pending (EV_P) 3303ev_invoke_pending (EV_P)
3076{ 3304{
3077 pendingpri = NUMPRI; 3305 pendingpri = NUMPRI;
3078 3306
3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3307 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
… …
3154 } 3382 }
3155} 3383}
3156 3384
3157#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
3158 3386
3159static void noinline 3387noinline
3388static void
3160periodic_recalc (EV_P_ ev_periodic *w) 3389periodic_recalc (EV_P_ ev_periodic *w)
3161{ 3390{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3391 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3392 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164 3393
… …
3222 } 3451 }
3223} 3452}
3224 3453
3225/* simply recalculate all periodics */ 3454/* simply recalculate all periodics */
3226/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3455/* TODO: maybe ensure that at least one event happens when jumping forward? */
3227static void noinline ecb_cold 3456noinline ecb_cold
3457static void
3228periodics_reschedule (EV_P) 3458periodics_reschedule (EV_P)
3229{ 3459{
3230 int i; 3460 int i;
3231 3461
3232 /* adjust periodics after time jump */ 3462 /* adjust periodics after time jump */
… …
3245 reheap (periodics, periodiccnt); 3475 reheap (periodics, periodiccnt);
3246} 3476}
3247#endif 3477#endif
3248 3478
3249/* adjust all timers by a given offset */ 3479/* adjust all timers by a given offset */
3250static void noinline ecb_cold 3480noinline ecb_cold
3481static void
3251timers_reschedule (EV_P_ ev_tstamp adjust) 3482timers_reschedule (EV_P_ ev_tstamp adjust)
3252{ 3483{
3253 int i; 3484 int i;
3254 3485
3255 for (i = 0; i < timercnt; ++i) 3486 for (i = 0; i < timercnt; ++i)
… …
3623 w->active = 0; 3854 w->active = 0;
3624} 3855}
3625 3856
3626/*****************************************************************************/ 3857/*****************************************************************************/
3627 3858
3628void noinline 3859noinline
3860void
3629ev_io_start (EV_P_ ev_io *w) EV_THROW 3861ev_io_start (EV_P_ ev_io *w) EV_THROW
3630{ 3862{
3631 int fd = w->fd; 3863 int fd = w->fd;
3632 3864
3633 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
… …
3649 w->events &= ~EV__IOFDSET; 3881 w->events &= ~EV__IOFDSET;
3650 3882
3651 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
3652} 3884}
3653 3885
3654void noinline 3886noinline
3887void
3655ev_io_stop (EV_P_ ev_io *w) EV_THROW 3888ev_io_stop (EV_P_ ev_io *w) EV_THROW
3656{ 3889{
3657 clear_pending (EV_A_ (W)w); 3890 clear_pending (EV_A_ (W)w);
3658 if (expect_false (!ev_is_active (w))) 3891 if (expect_false (!ev_is_active (w)))
3659 return; 3892 return;
… …
3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3901 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3669 3902
3670 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
3671} 3904}
3672 3905
3673void noinline 3906noinline
3907void
3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3908ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3675{ 3909{
3676 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
3677 return; 3911 return;
3678 3912
… …
3692 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
3693 3927
3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3928 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3695} 3929}
3696 3930
3697void noinline 3931noinline
3932void
3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3933ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3699{ 3934{
3700 clear_pending (EV_A_ (W)w); 3935 clear_pending (EV_A_ (W)w);
3701 if (expect_false (!ev_is_active (w))) 3936 if (expect_false (!ev_is_active (w)))
3702 return; 3937 return;
… …
3722 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
3723 3958
3724 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3725} 3960}
3726 3961
3727void noinline 3962noinline
3963void
3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3964ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3729{ 3965{
3730 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3731 3967
3732 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
… …
3756{ 3992{
3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3993 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3758} 3994}
3759 3995
3760#if EV_PERIODIC_ENABLE 3996#if EV_PERIODIC_ENABLE
3761void noinline 3997noinline
3998void
3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 3999ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3763{ 4000{
3764 if (expect_false (ev_is_active (w))) 4001 if (expect_false (ev_is_active (w)))
3765 return; 4002 return;
3766 4003
… …
3786 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
3787 4024
3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4025 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3789} 4026}
3790 4027
3791void noinline 4028noinline
4029void
3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4030ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3793{ 4031{
3794 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3796 return; 4034 return;
… …
3814 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
3815 4053
3816 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
3817} 4055}
3818 4056
3819void noinline 4057noinline
4058void
3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4059ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3821{ 4060{
3822 /* TODO: use adjustheap and recalculation */ 4061 /* TODO: use adjustheap and recalculation */
3823 ev_periodic_stop (EV_A_ w); 4062 ev_periodic_stop (EV_A_ w);
3824 ev_periodic_start (EV_A_ w); 4063 ev_periodic_start (EV_A_ w);
… …
3829# define SA_RESTART 0 4068# define SA_RESTART 0
3830#endif 4069#endif
3831 4070
3832#if EV_SIGNAL_ENABLE 4071#if EV_SIGNAL_ENABLE
3833 4072
3834void noinline 4073noinline
4074void
3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4075ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3836{ 4076{
3837 if (expect_false (ev_is_active (w))) 4077 if (expect_false (ev_is_active (w)))
3838 return; 4078 return;
3839 4079
… …
3911 } 4151 }
3912 4152
3913 EV_FREQUENT_CHECK; 4153 EV_FREQUENT_CHECK;
3914} 4154}
3915 4155
3916void noinline 4156noinline
4157void
3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4158ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3918{ 4159{
3919 clear_pending (EV_A_ (W)w); 4160 clear_pending (EV_A_ (W)w);
3920 if (expect_false (!ev_is_active (w))) 4161 if (expect_false (!ev_is_active (w)))
3921 return; 4162 return;
… …
3997 4238
3998#define DEF_STAT_INTERVAL 5.0074891 4239#define DEF_STAT_INTERVAL 5.0074891
3999#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4240#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
4000#define MIN_STAT_INTERVAL 0.1074891 4241#define MIN_STAT_INTERVAL 0.1074891
4001 4242
4002static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4243noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
4003 4244
4004#if EV_USE_INOTIFY 4245#if EV_USE_INOTIFY
4005 4246
4006/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4247/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4248# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
4008 4249
4009static void noinline 4250noinline
4251static void
4010infy_add (EV_P_ ev_stat *w) 4252infy_add (EV_P_ ev_stat *w)
4011{ 4253{
4012 w->wd = inotify_add_watch (fs_fd, w->path, 4254 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4255 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4256 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4078 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4079 ev_timer_again (EV_A_ &w->timer); 4321 ev_timer_again (EV_A_ &w->timer);
4080 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4322 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4081} 4323}
4082 4324
4083static void noinline 4325noinline
4326static void
4084infy_del (EV_P_ ev_stat *w) 4327infy_del (EV_P_ ev_stat *w)
4085{ 4328{
4086 int slot; 4329 int slot;
4087 int wd = w->wd; 4330 int wd = w->wd;
4088 4331
… …
4095 4338
4096 /* remove this watcher, if others are watching it, they will rearm */ 4339 /* remove this watcher, if others are watching it, they will rearm */
4097 inotify_rm_watch (fs_fd, wd); 4340 inotify_rm_watch (fs_fd, wd);
4098} 4341}
4099 4342
4100static void noinline 4343noinline
4344static void
4101infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4345infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4102{ 4346{
4103 if (slot < 0) 4347 if (slot < 0)
4104 /* overflow, need to check for all hash slots */ 4348 /* overflow, need to check for all hash slots */
4105 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4349 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4141 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4385 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4142 ofs += sizeof (struct inotify_event) + ev->len; 4386 ofs += sizeof (struct inotify_event) + ev->len;
4143 } 4387 }
4144} 4388}
4145 4389
4146inline_size void ecb_cold 4390inline_size ecb_cold
4391void
4147ev_check_2625 (EV_P) 4392ev_check_2625 (EV_P)
4148{ 4393{
4149 /* kernels < 2.6.25 are borked 4394 /* kernels < 2.6.25 are borked
4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4395 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4151 */ 4396 */
… …
4249 w->attr.st_nlink = 0; 4494 w->attr.st_nlink = 0;
4250 else if (!w->attr.st_nlink) 4495 else if (!w->attr.st_nlink)
4251 w->attr.st_nlink = 1; 4496 w->attr.st_nlink = 1;
4252} 4497}
4253 4498
4254static void noinline 4499noinline
4500static void
4255stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4501stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4256{ 4502{
4257 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4503 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4258 4504
4259 ev_statdata prev = w->attr; 4505 ev_statdata prev = w->attr;
… …
4469 EV_FREQUENT_CHECK; 4715 EV_FREQUENT_CHECK;
4470} 4716}
4471#endif 4717#endif
4472 4718
4473#if EV_EMBED_ENABLE 4719#if EV_EMBED_ENABLE
4474void noinline 4720noinline
4721void
4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4722ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4476{ 4723{
4477 ev_run (w->other, EVRUN_NOWAIT); 4724 ev_run (w->other, EVRUN_NOWAIT);
4478} 4725}
4479 4726
… …
4776} 5023}
4777 5024
4778/*****************************************************************************/ 5025/*****************************************************************************/
4779 5026
4780#if EV_WALK_ENABLE 5027#if EV_WALK_ENABLE
4781void ecb_cold 5028ecb_cold
5029void
4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5030ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4783{ 5031{
4784 int i, j; 5032 int i, j;
4785 ev_watcher_list *wl, *wn; 5033 ev_watcher_list *wl, *wn;
4786 5034

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