| 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 0x00010005 |
| 521 | |
538 | |
| 522 | #ifdef _WIN32 |
539 | #ifdef _WIN32 |
| 523 | typedef signed char int8_t; |
540 | typedef signed char int8_t; |
| 524 | typedef unsigned char uint8_t; |
541 | typedef unsigned char uint8_t; |
| 525 | typedef signed short int16_t; |
542 | typedef signed short int16_t; |
| … | |
… | |
| 542 | typedef uint32_t uintptr_t; |
559 | typedef uint32_t uintptr_t; |
| 543 | typedef int32_t intptr_t; |
560 | typedef int32_t intptr_t; |
| 544 | #endif |
561 | #endif |
| 545 | #else |
562 | #else |
| 546 | #include <inttypes.h> |
563 | #include <inttypes.h> |
| 547 | #if UINTMAX_MAX > 0xffffffffU |
564 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
| 548 | #define ECB_PTRSIZE 8 |
565 | #define ECB_PTRSIZE 8 |
| 549 | #else |
566 | #else |
| 550 | #define ECB_PTRSIZE 4 |
567 | #define ECB_PTRSIZE 4 |
|
|
568 | #endif |
|
|
569 | #endif |
|
|
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 |
| 551 | #endif |
580 | #endif |
| 552 | #endif |
581 | #endif |
| 553 | |
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 } |
| … | |
… | |
| 591 | #define ECB_NO_SMP 1 |
640 | #define ECB_NO_SMP 1 |
| 592 | #endif |
641 | #endif |
| 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) |
|
|
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 */ |
| 596 | #endif |
654 | #endif |
| 597 | |
655 | |
| 598 | #ifndef ECB_MEMORY_FENCE |
656 | #ifndef ECB_MEMORY_FENCE |
| 599 | #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 |
| 600 | #if __i386 || __i386__ |
658 | #if __i386 || __i386__ |
| 601 | #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") |
| 602 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
660 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
| 603 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
661 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 604 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
662 | #elif ECB_GCC_AMD64 |
| 605 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
| 606 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
664 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
| 607 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
665 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 608 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
666 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
| 609 | #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 */ |
| 610 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
675 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
| 611 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
676 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
677 | || defined __ARM_ARCH_6T2__ |
| 612 | #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") |
| 613 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
679 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
| 614 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
680 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
| 615 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
681 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
| 616 | #elif __sparc || __sparc__ |
682 | #elif __aarch64__ |
|
|
683 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
684 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
| 617 | #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") |
| 618 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
686 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
| 619 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
687 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
| 620 | #elif defined __s390__ || defined __s390x__ |
688 | #elif defined __s390__ || defined __s390x__ |
| 621 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
689 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
| 622 | #elif defined __mips__ |
690 | #elif defined __mips__ |
|
|
691 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
692 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
| 623 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
693 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
| 624 | #elif defined __alpha__ |
694 | #elif defined __alpha__ |
| 625 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
695 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
| 626 | #elif defined __hppa__ |
696 | #elif defined __hppa__ |
| 627 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
697 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
| 628 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
698 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 629 | #elif defined __ia64__ |
699 | #elif defined __ia64__ |
| 630 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
700 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
701 | #elif defined __m68k__ |
|
|
702 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
703 | #elif defined __m88k__ |
|
|
704 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
705 | #elif defined __sh__ |
|
|
706 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
| 631 | #endif |
707 | #endif |
| 632 | #endif |
708 | #endif |
| 633 | #endif |
709 | #endif |
| 634 | |
710 | |
| 635 | #ifndef ECB_MEMORY_FENCE |
711 | #ifndef ECB_MEMORY_FENCE |
| 636 | #if ECB_GCC_VERSION(4,7) |
712 | #if ECB_GCC_VERSION(4,7) |
| 637 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
713 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 638 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
714 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
715 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
716 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
| 639 | |
717 | |
| 640 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
718 | #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. |
719 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 646 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
720 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
| 647 | */ |
721 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
722 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
| 648 | |
723 | |
| 649 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
724 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
| 650 | #define ECB_MEMORY_FENCE __sync_synchronize () |
725 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
726 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
727 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
728 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
729 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
730 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
731 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
| 651 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
732 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
| 652 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
733 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
| 653 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
734 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
| 654 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
735 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
| 655 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
736 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
| … | |
… | |
| 675 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
756 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
| 676 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
757 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
| 677 | /* for most usages, or gcc and clang have a bug */ |
758 | /* for most usages, or gcc and clang have a bug */ |
| 678 | /* I *currently* lean towards the latter, and inefficiently implement */ |
759 | /* I *currently* lean towards the latter, and inefficiently implement */ |
| 679 | /* all three of ecb's fences as a seq_cst fence */ |
760 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
761 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
762 | /* for all __atomic_thread_fence's except seq_cst */ |
| 680 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
763 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
| 681 | #endif |
764 | #endif |
| 682 | #endif |
765 | #endif |
| 683 | |
766 | |
| 684 | #ifndef ECB_MEMORY_FENCE |
767 | #ifndef ECB_MEMORY_FENCE |
| … | |
… | |
| 707 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
790 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
| 708 | #endif |
791 | #endif |
| 709 | |
792 | |
| 710 | /*****************************************************************************/ |
793 | /*****************************************************************************/ |
| 711 | |
794 | |
| 712 | #if __cplusplus |
795 | #if ECB_CPP |
| 713 | #define ecb_inline static inline |
796 | #define ecb_inline static inline |
| 714 | #elif ECB_GCC_VERSION(2,5) |
797 | #elif ECB_GCC_VERSION(2,5) |
| 715 | #define ecb_inline static __inline__ |
798 | #define ecb_inline static __inline__ |
| 716 | #elif ECB_C99 |
799 | #elif ECB_C99 |
| 717 | #define ecb_inline static inline |
800 | #define ecb_inline static inline |
| … | |
… | |
| 731 | |
814 | |
| 732 | #define ECB_CONCAT_(a, b) a ## b |
815 | #define ECB_CONCAT_(a, b) a ## b |
| 733 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
816 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
| 734 | #define ECB_STRINGIFY_(a) # a |
817 | #define ECB_STRINGIFY_(a) # a |
| 735 | #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)) |
| 736 | |
820 | |
| 737 | #define ecb_function_ ecb_inline |
821 | #define ecb_function_ ecb_inline |
| 738 | |
822 | |
| 739 | #if ECB_GCC_VERSION(3,1) |
823 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
| 740 | #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) |
| 741 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
830 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
831 | #else |
|
|
832 | /* possible C11 impl for integral types |
|
|
833 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
834 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
835 | |
|
|
836 | #define ecb_is_constant(expr) 0 |
|
|
837 | #endif |
|
|
838 | |
|
|
839 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
| 742 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
840 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
841 | #else |
|
|
842 | #define ecb_expect(expr,value) (expr) |
|
|
843 | #endif |
|
|
844 | |
|
|
845 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
| 743 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
846 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
| 744 | #else |
847 | #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) |
848 | #define ecb_prefetch(addr,rw,locality) |
| 749 | #endif |
849 | #endif |
| 750 | |
850 | |
| 751 | /* no emulation for ecb_decltype */ |
851 | /* no emulation for ecb_decltype */ |
| 752 | #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; }; |
| 753 | #define ecb_decltype(x) __decltype(x) |
855 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
| 754 | #elif ECB_GCC_VERSION(3,0) |
856 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
| 755 | #define ecb_decltype(x) __typeof(x) |
857 | #define ecb_decltype(x) __typeof__ (x) |
| 756 | #endif |
858 | #endif |
| 757 | |
859 | |
|
|
860 | #if _MSC_VER >= 1300 |
|
|
861 | #define ecb_deprecated __declspec (deprecated) |
|
|
862 | #else |
|
|
863 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
864 | #endif |
|
|
865 | |
|
|
866 | #if _MSC_VER >= 1500 |
|
|
867 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
868 | #elif ECB_GCC_VERSION(4,5) |
|
|
869 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
870 | #else |
|
|
871 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
872 | #endif |
|
|
873 | |
|
|
874 | #if _MSC_VER >= 1400 |
|
|
875 | #define ecb_noinline __declspec (noinline) |
|
|
876 | #else |
| 758 | #define ecb_noinline ecb_attribute ((__noinline__)) |
877 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
878 | #endif |
|
|
879 | |
| 759 | #define ecb_unused ecb_attribute ((__unused__)) |
880 | #define ecb_unused ecb_attribute ((__unused__)) |
| 760 | #define ecb_const ecb_attribute ((__const__)) |
881 | #define ecb_const ecb_attribute ((__const__)) |
| 761 | #define ecb_pure ecb_attribute ((__pure__)) |
882 | #define ecb_pure ecb_attribute ((__pure__)) |
| 762 | |
883 | |
| 763 | #if ECB_C11 |
884 | #if ECB_C11 || __IBMC_NORETURN |
|
|
885 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
| 764 | #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) |
| 765 | #else |
892 | #else |
| 766 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
893 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
| 767 | #endif |
894 | #endif |
| 768 | |
895 | |
| 769 | #if ECB_GCC_VERSION(4,3) |
896 | #if ECB_GCC_VERSION(4,3) |
| … | |
… | |
| 784 | /* for compatibility to the rest of the world */ |
911 | /* for compatibility to the rest of the world */ |
| 785 | #define ecb_likely(expr) ecb_expect_true (expr) |
912 | #define ecb_likely(expr) ecb_expect_true (expr) |
| 786 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
913 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
| 787 | |
914 | |
| 788 | /* count trailing zero bits and count # of one bits */ |
915 | /* count trailing zero bits and count # of one bits */ |
| 789 | #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)) |
| 790 | /* 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 */ |
| 791 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
921 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
| 792 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
922 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
| 793 | #define ecb_ctz32(x) __builtin_ctz (x) |
923 | #define ecb_ctz32(x) __builtin_ctz (x) |
| 794 | #define ecb_ctz64(x) __builtin_ctzll (x) |
924 | #define ecb_ctz64(x) __builtin_ctzll (x) |
| 795 | #define ecb_popcount32(x) __builtin_popcount (x) |
925 | #define ecb_popcount32(x) __builtin_popcount (x) |
| 796 | /* no popcountll */ |
926 | /* no popcountll */ |
| 797 | #else |
927 | #else |
| 798 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
928 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
| 799 | ecb_function_ int |
929 | ecb_function_ ecb_const int |
| 800 | ecb_ctz32 (uint32_t x) |
930 | ecb_ctz32 (uint32_t x) |
| 801 | { |
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 |
| 802 | int r = 0; |
937 | int r = 0; |
| 803 | |
938 | |
| 804 | x &= ~x + 1; /* this isolates the lowest bit */ |
939 | x &= ~x + 1; /* this isolates the lowest bit */ |
| 805 | |
940 | |
| 806 | #if ECB_branchless_on_i386 |
941 | #if ECB_branchless_on_i386 |
| … | |
… | |
| 816 | if (x & 0xff00ff00) r += 8; |
951 | if (x & 0xff00ff00) r += 8; |
| 817 | if (x & 0xffff0000) r += 16; |
952 | if (x & 0xffff0000) r += 16; |
| 818 | #endif |
953 | #endif |
| 819 | |
954 | |
| 820 | return r; |
955 | return r; |
|
|
956 | #endif |
| 821 | } |
957 | } |
| 822 | |
958 | |
| 823 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
959 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
| 824 | ecb_function_ int |
960 | ecb_function_ ecb_const int |
| 825 | ecb_ctz64 (uint64_t x) |
961 | ecb_ctz64 (uint64_t x) |
| 826 | { |
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 |
| 827 | int shift = x & 0xffffffffU ? 0 : 32; |
968 | int shift = x & 0xffffffff ? 0 : 32; |
| 828 | return ecb_ctz32 (x >> shift) + shift; |
969 | return ecb_ctz32 (x >> shift) + shift; |
|
|
970 | #endif |
| 829 | } |
971 | } |
| 830 | |
972 | |
| 831 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
973 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
| 832 | ecb_function_ int |
974 | ecb_function_ ecb_const int |
| 833 | ecb_popcount32 (uint32_t x) |
975 | ecb_popcount32 (uint32_t x) |
| 834 | { |
976 | { |
| 835 | x -= (x >> 1) & 0x55555555; |
977 | x -= (x >> 1) & 0x55555555; |
| 836 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
978 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
| 837 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
979 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
| 838 | x *= 0x01010101; |
980 | x *= 0x01010101; |
| 839 | |
981 | |
| 840 | return x >> 24; |
982 | return x >> 24; |
| 841 | } |
983 | } |
| 842 | |
984 | |
| 843 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
985 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
| 844 | ecb_function_ int ecb_ld32 (uint32_t x) |
986 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
| 845 | { |
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 |
| 846 | int r = 0; |
993 | int r = 0; |
| 847 | |
994 | |
| 848 | if (x >> 16) { x >>= 16; r += 16; } |
995 | if (x >> 16) { x >>= 16; r += 16; } |
| 849 | if (x >> 8) { x >>= 8; r += 8; } |
996 | if (x >> 8) { x >>= 8; r += 8; } |
| 850 | if (x >> 4) { x >>= 4; r += 4; } |
997 | if (x >> 4) { x >>= 4; r += 4; } |
| 851 | if (x >> 2) { x >>= 2; r += 2; } |
998 | if (x >> 2) { x >>= 2; r += 2; } |
| 852 | if (x >> 1) { r += 1; } |
999 | if (x >> 1) { r += 1; } |
| 853 | |
1000 | |
| 854 | return r; |
1001 | return r; |
|
|
1002 | #endif |
| 855 | } |
1003 | } |
| 856 | |
1004 | |
| 857 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
1005 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
| 858 | ecb_function_ int ecb_ld64 (uint64_t x) |
1006 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
| 859 | { |
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 |
| 860 | int r = 0; |
1013 | int r = 0; |
| 861 | |
1014 | |
| 862 | if (x >> 32) { x >>= 32; r += 32; } |
1015 | if (x >> 32) { x >>= 32; r += 32; } |
| 863 | |
1016 | |
| 864 | return r + ecb_ld32 (x); |
1017 | return r + ecb_ld32 (x); |
|
|
1018 | #endif |
| 865 | } |
1019 | } |
| 866 | #endif |
1020 | #endif |
| 867 | |
1021 | |
| 868 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
1022 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
| 869 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
1023 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
| 870 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
1024 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
| 871 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
1025 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
| 872 | |
1026 | |
| 873 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
1027 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
| 874 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
1028 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
| 875 | { |
1029 | { |
| 876 | return ( (x * 0x0802U & 0x22110U) |
1030 | return ( (x * 0x0802U & 0x22110U) |
| 877 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
1031 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
| 878 | } |
1032 | } |
| 879 | |
1033 | |
| 880 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
1034 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
| 881 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
1035 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
| 882 | { |
1036 | { |
| 883 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
1037 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
| 884 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
1038 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
| 885 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
1039 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
| 886 | x = ( x >> 8 ) | ( x << 8); |
1040 | x = ( x >> 8 ) | ( x << 8); |
| 887 | |
1041 | |
| 888 | return x; |
1042 | return x; |
| 889 | } |
1043 | } |
| 890 | |
1044 | |
| 891 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
1045 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
| 892 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
1046 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
| 893 | { |
1047 | { |
| 894 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
1048 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
| 895 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
1049 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
| 896 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
1050 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
| 897 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
1051 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
| … | |
… | |
| 900 | return x; |
1054 | return x; |
| 901 | } |
1055 | } |
| 902 | |
1056 | |
| 903 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
1057 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
| 904 | /* so for this version we are lazy */ |
1058 | /* so for this version we are lazy */ |
| 905 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
1059 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
| 906 | ecb_function_ int |
1060 | ecb_function_ ecb_const int |
| 907 | ecb_popcount64 (uint64_t x) |
1061 | ecb_popcount64 (uint64_t x) |
| 908 | { |
1062 | { |
| 909 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
1063 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
| 910 | } |
1064 | } |
| 911 | |
1065 | |
| 912 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
1066 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
| 913 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
1067 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
| 914 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
1068 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
| 915 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
1069 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
| 916 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
1070 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
| 917 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
1071 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
| 918 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
1072 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
| 919 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
1073 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
| 920 | |
1074 | |
| 921 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
1075 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
| 922 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
1076 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
| 923 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
1077 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
| 924 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
1078 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
| 925 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
1079 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
| 926 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
1080 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
| 927 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
1081 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
| 928 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
1082 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
| 929 | |
1083 | |
| 930 | #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 |
| 931 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
1088 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1089 | #endif |
| 932 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
1090 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
| 933 | #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))) |
| 934 | #else |
1097 | #else |
| 935 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
1098 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
| 936 | ecb_function_ uint16_t |
1099 | ecb_function_ ecb_const uint16_t |
| 937 | ecb_bswap16 (uint16_t x) |
1100 | ecb_bswap16 (uint16_t x) |
| 938 | { |
1101 | { |
| 939 | return ecb_rotl16 (x, 8); |
1102 | return ecb_rotl16 (x, 8); |
| 940 | } |
1103 | } |
| 941 | |
1104 | |
| 942 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
1105 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
| 943 | ecb_function_ uint32_t |
1106 | ecb_function_ ecb_const uint32_t |
| 944 | ecb_bswap32 (uint32_t x) |
1107 | ecb_bswap32 (uint32_t x) |
| 945 | { |
1108 | { |
| 946 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
1109 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
| 947 | } |
1110 | } |
| 948 | |
1111 | |
| 949 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
1112 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
| 950 | ecb_function_ uint64_t |
1113 | ecb_function_ ecb_const uint64_t |
| 951 | ecb_bswap64 (uint64_t x) |
1114 | ecb_bswap64 (uint64_t x) |
| 952 | { |
1115 | { |
| 953 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
1116 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
| 954 | } |
1117 | } |
| 955 | #endif |
1118 | #endif |
| 956 | |
1119 | |
| 957 | #if ECB_GCC_VERSION(4,5) |
1120 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
| 958 | #define ecb_unreachable() __builtin_unreachable () |
1121 | #define ecb_unreachable() __builtin_unreachable () |
| 959 | #else |
1122 | #else |
| 960 | /* 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 :/ */ |
| 961 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1124 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
| 962 | ecb_inline void ecb_unreachable (void) { } |
1125 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
| 963 | #endif |
1126 | #endif |
| 964 | |
1127 | |
| 965 | /* try to tell the compiler that some condition is definitely true */ |
1128 | /* try to tell the compiler that some condition is definitely true */ |
| 966 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
1129 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
| 967 | |
1130 | |
| 968 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1131 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
| 969 | ecb_inline unsigned char |
1132 | ecb_inline ecb_const uint32_t |
| 970 | ecb_byteorder_helper (void) |
1133 | ecb_byteorder_helper (void) |
| 971 | { |
1134 | { |
| 972 | /* the union code still generates code under pressure in gcc, */ |
1135 | /* the union code still generates code under pressure in gcc, */ |
| 973 | /* but less than using pointers, and always seems to */ |
1136 | /* but less than using pointers, and always seems to */ |
| 974 | /* successfully return a constant. */ |
1137 | /* successfully return a constant. */ |
| 975 | /* the reason why we have this horrible preprocessor mess */ |
1138 | /* the reason why we have this horrible preprocessor mess */ |
| 976 | /* 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 */ |
| 977 | /* or when using a recent enough gcc version (>= 4.6) */ |
1140 | /* or when using a recent enough gcc version (>= 4.6) */ |
| 978 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
| 979 | return 0x44; |
|
|
| 980 | #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 |
| 981 | return 0x44; |
1144 | return 0x44332211; |
| 982 | #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 |
| 983 | return 0x11; |
1148 | return 0x11223344; |
| 984 | #else |
1149 | #else |
| 985 | union |
1150 | union |
| 986 | { |
1151 | { |
|
|
1152 | uint8_t c[4]; |
| 987 | uint32_t i; |
1153 | uint32_t u; |
| 988 | uint8_t c; |
|
|
| 989 | } u = { 0x11223344 }; |
1154 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
| 990 | return u.c; |
1155 | return u.u; |
| 991 | #endif |
1156 | #endif |
| 992 | } |
1157 | } |
| 993 | |
1158 | |
| 994 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1159 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
| 995 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1160 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
| 996 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1161 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
| 997 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
1162 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
| 998 | |
1163 | |
| 999 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1164 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
| 1000 | #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)) |
| 1001 | #else |
1166 | #else |
| 1002 | #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))) |
| 1003 | #endif |
1168 | #endif |
| 1004 | |
1169 | |
| 1005 | #if __cplusplus |
1170 | #if ECB_CPP |
| 1006 | template<typename T> |
1171 | template<typename T> |
| 1007 | static inline T ecb_div_rd (T val, T div) |
1172 | static inline T ecb_div_rd (T val, T div) |
| 1008 | { |
1173 | { |
| 1009 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
1174 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
| 1010 | } |
1175 | } |
| … | |
… | |
| 1027 | } |
1192 | } |
| 1028 | #else |
1193 | #else |
| 1029 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1194 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
| 1030 | #endif |
1195 | #endif |
| 1031 | |
1196 | |
|
|
1197 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1198 | ecb_function_ ecb_const uint32_t |
|
|
1199 | ecb_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 | |
|
|
1229 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1230 | ecb_function_ ecb_const uint16_t |
|
|
1231 | ecb_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 | |
| 1032 | /*******************************************************************************/ |
1293 | /*******************************************************************************/ |
| 1033 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
1294 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
| 1034 | |
1295 | |
| 1035 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
1296 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
| 1036 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
1297 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
| 1037 | #if 0 \ |
1298 | #if 0 \ |
| 1038 | || __i386 || __i386__ \ |
1299 | || __i386 || __i386__ \ |
| 1039 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
1300 | || ECB_GCC_AMD64 \ |
| 1040 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
1301 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
| 1041 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
| 1042 | || defined __s390__ || defined __s390x__ \ |
1302 | || defined __s390__ || defined __s390x__ \ |
| 1043 | || defined __mips__ \ |
1303 | || defined __mips__ \ |
| 1044 | || defined __alpha__ \ |
1304 | || defined __alpha__ \ |
| 1045 | || defined __hppa__ \ |
1305 | || defined __hppa__ \ |
| 1046 | || defined __ia64__ \ |
1306 | || defined __ia64__ \ |
|
|
1307 | || defined __m68k__ \ |
|
|
1308 | || defined __m88k__ \ |
|
|
1309 | || defined __sh__ \ |
| 1047 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
1310 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1311 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1312 | || defined __aarch64__ |
| 1048 | #define ECB_STDFP 1 |
1313 | #define ECB_STDFP 1 |
| 1049 | #include <string.h> /* for memcpy */ |
1314 | #include <string.h> /* for memcpy */ |
| 1050 | #else |
1315 | #else |
| 1051 | #define ECB_STDFP 0 |
1316 | #define ECB_STDFP 0 |
| 1052 | #include <math.h> /* for frexp*, ldexp* */ |
|
|
| 1053 | #endif |
1317 | #endif |
| 1054 | |
1318 | |
| 1055 | #ifndef ECB_NO_LIBM |
1319 | #ifndef ECB_NO_LIBM |
| 1056 | |
1320 | |
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|
1321 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
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|
1322 | |
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|
1323 | /* only the oldest of old doesn't have this one. solaris. */ |
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|
1324 | #ifdef INFINITY |
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|
1325 | #define ECB_INFINITY INFINITY |
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|
1326 | #else |
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|
1327 | #define ECB_INFINITY HUGE_VAL |
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|
1328 | #endif |
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|
1329 | |
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|
1330 | #ifdef NAN |
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|
1331 | #define ECB_NAN NAN |
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|
1332 | #else |
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|
1333 | #define ECB_NAN ECB_INFINITY |
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|
1334 | #endif |
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1335 | |
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|
1336 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
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|
1337 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
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|
1338 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
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|
1339 | #else |
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|
1340 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
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|
1341 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
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|
1342 | #endif |
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|
1343 | |
| 1057 | /* convert a float to ieee single/binary32 */ |
1344 | /* convert a float to ieee single/binary32 */ |
| 1058 | 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); |
| 1059 | ecb_function_ uint32_t |
1346 | ecb_function_ ecb_const uint32_t |
| 1060 | ecb_float_to_binary32 (float x) |
1347 | ecb_float_to_binary32 (float x) |
| 1061 | { |
1348 | { |
| 1062 | uint32_t r; |
1349 | uint32_t r; |
| 1063 | |
1350 | |
| 1064 | #if ECB_STDFP |
1351 | #if ECB_STDFP |
| … | |
… | |
| 1071 | if (x == 0e0f ) return 0x00000000U; |
1358 | if (x == 0e0f ) return 0x00000000U; |
| 1072 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
1359 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
| 1073 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
1360 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
| 1074 | if (x != x ) return 0x7fbfffffU; |
1361 | if (x != x ) return 0x7fbfffffU; |
| 1075 | |
1362 | |
| 1076 | m = frexpf (x, &e) * 0x1000000U; |
1363 | m = ecb_frexpf (x, &e) * 0x1000000U; |
| 1077 | |
1364 | |
| 1078 | r = m & 0x80000000U; |
1365 | r = m & 0x80000000U; |
| 1079 | |
1366 | |
| 1080 | if (r) |
1367 | if (r) |
| 1081 | m = -m; |
1368 | m = -m; |
| … | |
… | |
| 1093 | |
1380 | |
| 1094 | return r; |
1381 | return r; |
| 1095 | } |
1382 | } |
| 1096 | |
1383 | |
| 1097 | /* converts an ieee single/binary32 to a float */ |
1384 | /* converts an ieee single/binary32 to a float */ |
| 1098 | 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); |
| 1099 | ecb_function_ float |
1386 | ecb_function_ ecb_const float |
| 1100 | ecb_binary32_to_float (uint32_t x) |
1387 | ecb_binary32_to_float (uint32_t x) |
| 1101 | { |
1388 | { |
| 1102 | float r; |
1389 | float r; |
| 1103 | |
1390 | |
| 1104 | #if ECB_STDFP |
1391 | #if ECB_STDFP |
| … | |
… | |
| 1114 | x |= 0x800000U; |
1401 | x |= 0x800000U; |
| 1115 | else |
1402 | else |
| 1116 | e = 1; |
1403 | e = 1; |
| 1117 | |
1404 | |
| 1118 | /* 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 */ |
| 1119 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
1406 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
| 1120 | |
1407 | |
| 1121 | r = neg ? -r : r; |
1408 | r = neg ? -r : r; |
| 1122 | #endif |
1409 | #endif |
| 1123 | |
1410 | |
| 1124 | return r; |
1411 | return r; |
| 1125 | } |
1412 | } |
| 1126 | |
1413 | |
| 1127 | /* convert a double to ieee double/binary64 */ |
1414 | /* convert a double to ieee double/binary64 */ |
| 1128 | 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); |
| 1129 | ecb_function_ uint64_t |
1416 | ecb_function_ ecb_const uint64_t |
| 1130 | ecb_double_to_binary64 (double x) |
1417 | ecb_double_to_binary64 (double x) |
| 1131 | { |
1418 | { |
| 1132 | uint64_t r; |
1419 | uint64_t r; |
| 1133 | |
1420 | |
| 1134 | #if ECB_STDFP |
1421 | #if ECB_STDFP |
| … | |
… | |
| 1163 | |
1450 | |
| 1164 | return r; |
1451 | return r; |
| 1165 | } |
1452 | } |
| 1166 | |
1453 | |
| 1167 | /* converts an ieee double/binary64 to a double */ |
1454 | /* converts an ieee double/binary64 to a double */ |
| 1168 | 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); |
| 1169 | ecb_function_ double |
1456 | ecb_function_ ecb_const double |
| 1170 | ecb_binary64_to_double (uint64_t x) |
1457 | ecb_binary64_to_double (uint64_t x) |
| 1171 | { |
1458 | { |
| 1172 | double r; |
1459 | double r; |
| 1173 | |
1460 | |
| 1174 | #if ECB_STDFP |
1461 | #if ECB_STDFP |
| … | |
… | |
| 1190 | |
1477 | |
| 1191 | r = neg ? -r : r; |
1478 | r = neg ? -r : r; |
| 1192 | #endif |
1479 | #endif |
| 1193 | |
1480 | |
| 1194 | 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 |
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|
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 */ |
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|
1493 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
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|
1494 | ecb_function_ ecb_const float |
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|
1495 | ecb_binary16_to_float (uint16_t x) |
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|
1496 | { |
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|
1497 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
| 1195 | } |
1498 | } |
| 1196 | |
1499 | |
| 1197 | #endif |
1500 | #endif |
| 1198 | |
1501 | |
| 1199 | #endif |
1502 | #endif |
| … | |
… | |
| 2095 | ev_syserr ("(libev) error creating signal/async pipe"); |
2398 | ev_syserr ("(libev) error creating signal/async pipe"); |
| 2096 | |
2399 | |
| 2097 | fd_intern (fds [0]); |
2400 | fd_intern (fds [0]); |
| 2098 | } |
2401 | } |
| 2099 | |
2402 | |
| 2100 | fd_intern (fds [1]); |
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|
| 2101 | |
|
|
| 2102 | evpipe [0] = fds [0]; |
2403 | evpipe [0] = fds [0]; |
| 2103 | |
2404 | |
| 2104 | if (evpipe [1] < 0) |
2405 | if (evpipe [1] < 0) |
| 2105 | evpipe [1] = fds [1]; /* first call, set write fd */ |
2406 | evpipe [1] = fds [1]; /* first call, set write fd */ |
| 2106 | else |
2407 | else |
| … | |
… | |
| 2111 | /* so must not be executed on windows */ |
2412 | /* so must not be executed on windows */ |
| 2112 | |
2413 | |
| 2113 | dup2 (fds [1], evpipe [1]); |
2414 | dup2 (fds [1], evpipe [1]); |
| 2114 | close (fds [1]); |
2415 | close (fds [1]); |
| 2115 | } |
2416 | } |
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|
2417 | |
|
|
2418 | fd_intern (evpipe [1]); |
| 2116 | |
2419 | |
| 2117 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
2420 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
| 2118 | ev_io_start (EV_A_ &pipe_w); |
2421 | ev_io_start (EV_A_ &pipe_w); |
| 2119 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2422 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
| 2120 | } |
2423 | } |
| … | |
… | |
| 2504 | { |
2807 | { |
| 2505 | return userdata; |
2808 | return userdata; |
| 2506 | } |
2809 | } |
| 2507 | |
2810 | |
| 2508 | void |
2811 | void |
| 2509 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2812 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
| 2510 | { |
2813 | { |
| 2511 | invoke_cb = invoke_pending_cb; |
2814 | invoke_cb = invoke_pending_cb; |
| 2512 | } |
2815 | } |
| 2513 | |
2816 | |
| 2514 | void |
2817 | void |
| … | |
… | |
| 2746 | #if EV_USE_INOTIFY |
3049 | #if EV_USE_INOTIFY |
| 2747 | infy_fork (EV_A); |
3050 | infy_fork (EV_A); |
| 2748 | #endif |
3051 | #endif |
| 2749 | |
3052 | |
| 2750 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
3053 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
| 2751 | if (ev_is_active (&pipe_w)) |
3054 | if (ev_is_active (&pipe_w) && postfork != 2) |
| 2752 | { |
3055 | { |
| 2753 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
3056 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
| 2754 | |
3057 | |
| 2755 | ev_ref (EV_A); |
3058 | ev_ref (EV_A); |
| 2756 | ev_io_stop (EV_A_ &pipe_w); |
3059 | ev_io_stop (EV_A_ &pipe_w); |
