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Comparing libev/ev.c (file contents):
Revision 1.452 by root, Mon Feb 18 03:20:29 2013 UTC vs.
Revision 1.476 by root, Fri May 1 17:23:34 2015 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
241#elif defined SIGARRAYSIZE 241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 245#else
246# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 247#endif
251 248
252#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
254#endif 251#endif
255 252
256#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 256# else
260# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
258# endif
259#endif
260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
261# endif 267# endif
262#endif 268#endif
263 269
264#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
487/* 493/*
488 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
489 * 495 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved. 498 * All rights reserved.
493 * 499 *
494 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
514 */ 531 */
515 532
516#ifndef ECB_H 533#ifndef ECB_H
517#define ECB_H 534#define ECB_H
518 535
519/* 16 bits major, 16 bits minor */ 536/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002 537#define ECB_VERSION 0x00010004
521 538
522#ifdef _WIN32 539#ifdef _WIN32
523 typedef signed char int8_t; 540 typedef signed char int8_t;
524 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
525 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
549 #else 566 #else
550 #define ECB_PTRSIZE 4 567 #define ECB_PTRSIZE 4
551 #endif 568 #endif
552#endif 569#endif
553 570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
581#endif
582
554/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so. 586 * or so.
558 * 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
559 * 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.
560 */ 589 */
561#ifndef ECB_GCC_VERSION
562 #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__
563 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
564 #else 592#else
565 #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)))
566 #endif 594#endif
567#endif
568 595
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
570#define ECB_C99 (__STDC_VERSION__ >= 199901L) 597
571#define ECB_C11 (__STDC_VERSION__ >= 201112L) 598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
572#define ECB_CPP (__cplusplus+0) 610#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L) 611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
574 623
575#if ECB_CPP 624#if ECB_CPP
576 #define ECB_EXTERN_C extern "C" 625 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END } 627 #define ECB_EXTERN_C_END }
… …
593 642
594#if ECB_NO_SMP 643#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
596#endif 645#endif
597 646
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
598#ifndef ECB_MEMORY_FENCE 652#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__ 654 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 658 #elif ECB_GCC_AMD64
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
… …
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
616 #elif __sparc || __sparc__ 672 #elif (__sparc || __sparc__) && !__sparcv8
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__ 676 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__ 678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
624 #elif defined __alpha__ 682 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__ 684 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__ 687 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
631 #endif 695 #endif
632 #endif 696 #endif
633#endif 697#endif
634 698
635#ifndef ECB_MEMORY_FENCE 699#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7) 700 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */ 701 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
639 705
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 706 #elif ECB_CLANG_EXTENSION(c_atomic)
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model. 707 /* see comment below (stdatomic.h) about the C11 memory model. */
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */ 709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
648 711
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize () 713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
675 /* any fence other than seq_cst, which isn't very efficient for us. */ 744 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */ 745 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */ 746 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */ 747 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */ 748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif 752 #endif
682#endif 753#endif
683 754
684#ifndef ECB_MEMORY_FENCE 755#ifndef ECB_MEMORY_FENCE
… …
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif 779#endif
709 780
710/*****************************************************************************/ 781/*****************************************************************************/
711 782
712#if __cplusplus 783#if ECB_CPP
713 #define ecb_inline static inline 784 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5) 785#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__ 786 #define ecb_inline static __inline__
716#elif ECB_C99 787#elif ECB_C99
717 #define ecb_inline static inline 788 #define ecb_inline static inline
… …
731 802
732#define ECB_CONCAT_(a, b) a ## b 803#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a 805#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
736 808
737#define ecb_function_ ecb_inline 809#define ecb_function_ ecb_inline
738 810
739#if ECB_GCC_VERSION(3,1) 811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
740 #define ecb_attribute(attrlist) __attribute__(attrlist) 812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr) 818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else 835#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality) 836 #define ecb_prefetch(addr,rw,locality)
749#endif 837#endif
750 838
751/* no emulation for ecb_decltype */ 839/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5) 840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
753 #define ecb_decltype(x) __decltype(x) 843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
754#elif ECB_GCC_VERSION(3,0) 844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
755 #define ecb_decltype(x) __typeof(x) 845 #define ecb_decltype(x) __typeof__ (x)
756#endif 846#endif
757 847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
758#define ecb_noinline ecb_attribute ((__noinline__)) 865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
759#define ecb_unused ecb_attribute ((__unused__)) 868#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__)) 869#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__)) 870#define ecb_pure ecb_attribute ((__pure__))
762 871
763#if ECB_C11 872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
764 #define ecb_noreturn _Noreturn 874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
765#else 880#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__)) 881 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif 882#endif
768 883
769#if ECB_GCC_VERSION(4,3) 884#if ECB_GCC_VERSION(4,3)
… …
784/* for compatibility to the rest of the world */ 899/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr) 900#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr) 901#define ecb_unlikely(expr) ecb_expect_false (expr)
787 902
788/* count trailing zero bits and count # of one bits */ 903/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4) 904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x) 911 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x) 912 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x) 913 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */ 914 /* no popcountll */
797#else 915#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
799 ecb_function_ int 917 ecb_function_ ecb_const int
800 ecb_ctz32 (uint32_t x) 918 ecb_ctz32 (uint32_t x)
801 { 919 {
802 int r = 0; 920 int r = 0;
803 921
804 x &= ~x + 1; /* this isolates the lowest bit */ 922 x &= ~x + 1; /* this isolates the lowest bit */
… …
818#endif 936#endif
819 937
820 return r; 938 return r;
821 } 939 }
822 940
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
824 ecb_function_ int 942 ecb_function_ ecb_const int
825 ecb_ctz64 (uint64_t x) 943 ecb_ctz64 (uint64_t x)
826 { 944 {
827 int shift = x & 0xffffffffU ? 0 : 32; 945 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift; 946 return ecb_ctz32 (x >> shift) + shift;
829 } 947 }
830 948
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
832 ecb_function_ int 950 ecb_function_ ecb_const int
833 ecb_popcount32 (uint32_t x) 951 ecb_popcount32 (uint32_t x)
834 { 952 {
835 x -= (x >> 1) & 0x55555555; 953 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f; 955 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101; 956 x *= 0x01010101;
839 957
840 return x >> 24; 958 return x >> 24;
841 } 959 }
842 960
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
844 ecb_function_ int ecb_ld32 (uint32_t x) 962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
845 { 963 {
846 int r = 0; 964 int r = 0;
847 965
848 if (x >> 16) { x >>= 16; r += 16; } 966 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; } 967 if (x >> 8) { x >>= 8; r += 8; }
… …
852 if (x >> 1) { r += 1; } 970 if (x >> 1) { r += 1; }
853 971
854 return r; 972 return r;
855 } 973 }
856 974
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
858 ecb_function_ int ecb_ld64 (uint64_t x) 976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
859 { 977 {
860 int r = 0; 978 int r = 0;
861 979
862 if (x >> 32) { x >>= 32; r += 32; } 980 if (x >> 32) { x >>= 32; r += 32; }
863 981
864 return r + ecb_ld32 (x); 982 return r + ecb_ld32 (x);
865 } 983 }
866#endif 984#endif
867 985
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872 990
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
875{ 993{
876 return ( (x * 0x0802U & 0x22110U) 994 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878} 996}
879 997
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
882{ 1000{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8); 1004 x = ( x >> 8 ) | ( x << 8);
887 1005
888 return x; 1006 return x;
889} 1007}
890 1008
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
893{ 1011{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
900 return x; 1018 return x;
901} 1019}
902 1020
903/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */ 1022/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
906ecb_function_ int 1024ecb_function_ ecb_const int
907ecb_popcount64 (uint64_t x) 1025ecb_popcount64 (uint64_t x)
908{ 1026{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910} 1028}
911 1029
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
920 1038
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929 1047
930#if ECB_GCC_VERSION(4,3) 1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
932 #define ecb_bswap32(x) __builtin_bswap32 (x) 1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x) 1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
934#else 1061#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
936 ecb_function_ uint16_t 1063 ecb_function_ ecb_const uint16_t
937 ecb_bswap16 (uint16_t x) 1064 ecb_bswap16 (uint16_t x)
938 { 1065 {
939 return ecb_rotl16 (x, 8); 1066 return ecb_rotl16 (x, 8);
940 } 1067 }
941 1068
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
943 ecb_function_ uint32_t 1070 ecb_function_ ecb_const uint32_t
944 ecb_bswap32 (uint32_t x) 1071 ecb_bswap32 (uint32_t x)
945 { 1072 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 } 1074 }
948 1075
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
950 ecb_function_ uint64_t 1077 ecb_function_ ecb_const uint64_t
951 ecb_bswap64 (uint64_t x) 1078 ecb_bswap64 (uint64_t x)
952 { 1079 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 } 1081 }
955#endif 1082#endif
956 1083
957#if ECB_GCC_VERSION(4,5) 1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
958 #define ecb_unreachable() __builtin_unreachable () 1085 #define ecb_unreachable() __builtin_unreachable ()
959#else 1086#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
962 ecb_inline void ecb_unreachable (void) { } 1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
963#endif 1090#endif
964 1091
965/* try to tell the compiler that some condition is definitely true */ 1092/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967 1094
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
969ecb_inline unsigned char 1096ecb_inline ecb_const unsigned char
970ecb_byteorder_helper (void) 1097ecb_byteorder_helper (void)
971{ 1098{
972 /* the union code still generates code under pressure in gcc, */ 1099 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */ 1100 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */ 1101 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */ 1102 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */ 1103 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */ 1104 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
979 return 0x44; 1106 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44; 1108 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11; 1110 return 0x11;
… …
989 } u = { 0x11223344 }; 1116 } u = { 0x11223344 };
990 return u.c; 1117 return u.c;
991#endif 1118#endif
992} 1119}
993 1120
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998 1125
999#if ECB_GCC_VERSION(3,0) || ECB_C99 1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else 1128#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif 1130#endif
1004 1131
1005#if __cplusplus 1132#if ECB_CPP
1006 template<typename T> 1133 template<typename T>
1007 static inline T ecb_div_rd (T val, T div) 1134 static inline T ecb_div_rd (T val, T div)
1008 { 1135 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 } 1137 }
… …
1034 1161
1035/* basically, everything uses "ieee pure-endian" floating point numbers */ 1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \ 1164#if 0 \
1038 || __i386 || __i386__ \ 1165 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1166 || ECB_GCC_AMD64 \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \ 1168 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \ 1169 || defined __mips__ \
1044 || defined __alpha__ \ 1170 || defined __alpha__ \
1045 || defined __hppa__ \ 1171 || defined __hppa__ \
1046 || defined __ia64__ \ 1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1048 #define ECB_STDFP 1 1179 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */ 1180 #include <string.h> /* for memcpy */
1050#else 1181#else
1051 #define ECB_STDFP 0 1182 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif 1183#endif
1054 1184
1055#ifndef ECB_NO_LIBM 1185#ifndef ECB_NO_LIBM
1056 1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1057 /* convert a float to ieee single/binary32 */ 1227 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1059 ecb_function_ uint32_t 1229 ecb_function_ ecb_const uint32_t
1060 ecb_float_to_binary32 (float x) 1230 ecb_float_to_binary32 (float x)
1061 { 1231 {
1062 uint32_t r; 1232 uint32_t r;
1063 1233
1064 #if ECB_STDFP 1234 #if ECB_STDFP
… …
1071 if (x == 0e0f ) return 0x00000000U; 1241 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU; 1244 if (x != x ) return 0x7fbfffffU;
1075 1245
1076 m = frexpf (x, &e) * 0x1000000U; 1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1077 1247
1078 r = m & 0x80000000U; 1248 r = m & 0x80000000U;
1079 1249
1080 if (r) 1250 if (r)
1081 m = -m; 1251 m = -m;
… …
1093 1263
1094 return r; 1264 return r;
1095 } 1265 }
1096 1266
1097 /* converts an ieee single/binary32 to a float */ 1267 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1099 ecb_function_ float 1269 ecb_function_ ecb_const float
1100 ecb_binary32_to_float (uint32_t x) 1270 ecb_binary32_to_float (uint32_t x)
1101 { 1271 {
1102 float r; 1272 float r;
1103 1273
1104 #if ECB_STDFP 1274 #if ECB_STDFP
… …
1114 x |= 0x800000U; 1284 x |= 0x800000U;
1115 else 1285 else
1116 e = 1; 1286 e = 1;
1117 1287
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1120 1290
1121 r = neg ? -r : r; 1291 r = neg ? -r : r;
1122 #endif 1292 #endif
1123 1293
1124 return r; 1294 return r;
1125 } 1295 }
1126 1296
1127 /* convert a double to ieee double/binary64 */ 1297 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1129 ecb_function_ uint64_t 1299 ecb_function_ ecb_const uint64_t
1130 ecb_double_to_binary64 (double x) 1300 ecb_double_to_binary64 (double x)
1131 { 1301 {
1132 uint64_t r; 1302 uint64_t r;
1133 1303
1134 #if ECB_STDFP 1304 #if ECB_STDFP
… …
1163 1333
1164 return r; 1334 return r;
1165 } 1335 }
1166 1336
1167 /* converts an ieee double/binary64 to a double */ 1337 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1169 ecb_function_ double 1339 ecb_function_ ecb_const double
1170 ecb_binary64_to_double (uint64_t x) 1340 ecb_binary64_to_double (uint64_t x)
1171 { 1341 {
1172 double r; 1342 double r;
1173 1343
1174 #if ECB_STDFP 1344 #if ECB_STDFP
… …
2095 ev_syserr ("(libev) error creating signal/async pipe"); 2265 ev_syserr ("(libev) error creating signal/async pipe");
2096 2266
2097 fd_intern (fds [0]); 2267 fd_intern (fds [0]);
2098 } 2268 }
2099 2269
2100 fd_intern (fds [1]);
2101
2102 evpipe [0] = fds [0]; 2270 evpipe [0] = fds [0];
2103 2271
2104 if (evpipe [1] < 0) 2272 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */ 2273 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else 2274 else
… …
2111 /* so must not be executed on windows */ 2279 /* so must not be executed on windows */
2112 2280
2113 dup2 (fds [1], evpipe [1]); 2281 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]); 2282 close (fds [1]);
2115 } 2283 }
2284
2285 fd_intern (evpipe [1]);
2116 2286
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); 2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w); 2288 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */ 2289 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 } 2290 }
… …
2239 2409
2240void 2410void
2241ev_feed_signal (int signum) EV_THROW 2411ev_feed_signal (int signum) EV_THROW
2242{ 2412{
2243#if EV_MULTIPLICITY 2413#if EV_MULTIPLICITY
2414 EV_P;
2244 ECB_MEMORY_FENCE_ACQUIRE; 2415 ECB_MEMORY_FENCE_ACQUIRE;
2245 EV_P = signals [signum - 1].loop; 2416 EV_A = signals [signum - 1].loop;
2246 2417
2247 if (!EV_A) 2418 if (!EV_A)
2248 return; 2419 return;
2249#endif 2420#endif
2250 2421
… …
2503{ 2674{
2504 return userdata; 2675 return userdata;
2505} 2676}
2506 2677
2507void 2678void
2508ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2509{ 2680{
2510 invoke_cb = invoke_pending_cb; 2681 invoke_cb = invoke_pending_cb;
2511} 2682}
2512 2683
2513void 2684void

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