| 1 | /* |
1 | /* |
| 2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
| 3 | * |
3 | * |
| 4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de> |
| 5 | * All rights reserved. |
5 | * All rights reserved. |
| 6 | * |
6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
| 8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
| 9 | * |
9 | * |
| … | |
… | |
| 43 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
| 44 | # else |
44 | # else |
| 45 | # include "config.h" |
45 | # include "config.h" |
| 46 | # endif |
46 | # endif |
| 47 | |
47 | |
| 48 | #if HAVE_FLOOR |
48 | # if HAVE_FLOOR |
| 49 | # ifndef EV_USE_FLOOR |
49 | # ifndef EV_USE_FLOOR |
| 50 | # define EV_USE_FLOOR 1 |
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
| 51 | # endif |
52 | # endif |
| 52 | #endif |
|
|
| 53 | |
53 | |
| 54 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
| 55 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
| 56 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
| 57 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
| … | |
… | |
| 241 | #elif defined SIGARRAYSIZE |
241 | #elif defined SIGARRAYSIZE |
| 242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
| 243 | #elif defined _sys_nsig |
243 | #elif defined _sys_nsig |
| 244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
| 245 | #else |
245 | #else |
| 246 | # error "unable to find value for NSIG, please report" |
246 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
| 247 | /* to make it compile regardless, just remove the above line, */ |
|
|
| 248 | /* but consider reporting it, too! :) */ |
|
|
| 249 | # define EV_NSIG 65 |
|
|
| 250 | #endif |
247 | #endif |
| 251 | |
248 | |
| 252 | #ifndef EV_USE_FLOOR |
249 | #ifndef EV_USE_FLOOR |
| 253 | # define EV_USE_FLOOR 0 |
250 | # define EV_USE_FLOOR 0 |
| 254 | #endif |
251 | #endif |
| 255 | |
252 | |
| 256 | #ifndef EV_USE_CLOCK_SYSCALL |
253 | #ifndef EV_USE_CLOCK_SYSCALL |
| 257 | # if __linux && __GLIBC__ >= 2 |
254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
| 258 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
| 259 | # else |
256 | # else |
| 260 | # define EV_USE_CLOCK_SYSCALL 0 |
257 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
258 | # endif |
|
|
259 | #endif |
|
|
260 | |
|
|
261 | #if !(_POSIX_TIMERS > 0) |
|
|
262 | # ifndef EV_USE_MONOTONIC |
|
|
263 | # define EV_USE_MONOTONIC 0 |
|
|
264 | # endif |
|
|
265 | # ifndef EV_USE_REALTIME |
|
|
266 | # define EV_USE_REALTIME 0 |
| 261 | # endif |
267 | # endif |
| 262 | #endif |
268 | #endif |
| 263 | |
269 | |
| 264 | #ifndef EV_USE_MONOTONIC |
270 | #ifndef EV_USE_MONOTONIC |
| 265 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
271 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
| … | |
… | |
| 485 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
491 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
| 486 | /* ECB.H BEGIN */ |
492 | /* ECB.H BEGIN */ |
| 487 | /* |
493 | /* |
| 488 | * libecb - http://software.schmorp.de/pkg/libecb |
494 | * libecb - http://software.schmorp.de/pkg/libecb |
| 489 | * |
495 | * |
| 490 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
496 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
| 491 | * Copyright (©) 2011 Emanuele Giaquinta |
497 | * Copyright (©) 2011 Emanuele Giaquinta |
| 492 | * All rights reserved. |
498 | * All rights reserved. |
| 493 | * |
499 | * |
| 494 | * Redistribution and use in source and binary forms, with or without modifica- |
500 | * Redistribution and use in source and binary forms, with or without modifica- |
| 495 | * tion, are permitted provided that the following conditions are met: |
501 | * tion, are permitted provided that the following conditions are met: |
| … | |
… | |
| 509 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
515 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 510 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
516 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 511 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
517 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
| 512 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
518 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 513 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
519 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
520 | * |
|
|
521 | * Alternatively, the contents of this file may be used under the terms of |
|
|
522 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
523 | * in which case the provisions of the GPL are applicable instead of |
|
|
524 | * the above. If you wish to allow the use of your version of this file |
|
|
525 | * only under the terms of the GPL and not to allow others to use your |
|
|
526 | * version of this file under the BSD license, indicate your decision |
|
|
527 | * by deleting the provisions above and replace them with the notice |
|
|
528 | * and other provisions required by the GPL. If you do not delete the |
|
|
529 | * provisions above, a recipient may use your version of this file under |
|
|
530 | * either the BSD or the GPL. |
| 514 | */ |
531 | */ |
| 515 | |
532 | |
| 516 | #ifndef ECB_H |
533 | #ifndef ECB_H |
| 517 | #define ECB_H |
534 | #define ECB_H |
| 518 | |
535 | |
| 519 | /* 16 bits major, 16 bits minor */ |
536 | /* 16 bits major, 16 bits minor */ |
| 520 | #define ECB_VERSION 0x00010003 |
537 | #define ECB_VERSION 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 | |
| 554 | /* work around x32 idiocy by defining proper macros */ |
574 | /* work around x32 idiocy by defining proper macros */ |
| 555 | #if __x86_64 || _M_AMD64 |
575 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
| 556 | #if _ILP32 |
576 | #if _ILP32 |
| 557 | #define ECB_AMD64_X32 1 |
577 | #define ECB_AMD64_X32 1 |
| 558 | #else |
578 | #else |
| 559 | #define ECB_AMD64 1 |
579 | #define ECB_AMD64 1 |
| 560 | #endif |
580 | #endif |
| … | |
… | |
| 565 | * causing enormous grief in return for some better fake benchmark numbers. |
585 | * causing enormous grief in return for some better fake benchmark numbers. |
| 566 | * or so. |
586 | * or so. |
| 567 | * we try to detect these and simply assume they are not gcc - if they have |
587 | * we try to detect these and simply assume they are not gcc - if they have |
| 568 | * an issue with that they should have done it right in the first place. |
588 | * an issue with that they should have done it right in the first place. |
| 569 | */ |
589 | */ |
| 570 | #ifndef ECB_GCC_VERSION |
|
|
| 571 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
590 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
| 572 | #define ECB_GCC_VERSION(major,minor) 0 |
591 | #define ECB_GCC_VERSION(major,minor) 0 |
| 573 | #else |
592 | #else |
| 574 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
593 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
| 575 | #endif |
594 | #endif |
| 576 | #endif |
|
|
| 577 | |
595 | |
| 578 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
596 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
| 579 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
597 | |
| 580 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
598 | #if __clang__ && defined __has_builtin |
|
|
599 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
600 | #else |
|
|
601 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
602 | #endif |
|
|
603 | |
|
|
604 | #if __clang__ && defined __has_extension |
|
|
605 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
606 | #else |
|
|
607 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
608 | #endif |
|
|
609 | |
| 581 | #define ECB_CPP (__cplusplus+0) |
610 | #define ECB_CPP (__cplusplus+0) |
| 582 | #define ECB_CPP11 (__cplusplus >= 201103L) |
611 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
612 | |
|
|
613 | #if ECB_CPP |
|
|
614 | #define ECB_C 0 |
|
|
615 | #define ECB_STDC_VERSION 0 |
|
|
616 | #else |
|
|
617 | #define ECB_C 1 |
|
|
618 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
622 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
| 583 | |
623 | |
| 584 | #if ECB_CPP |
624 | #if ECB_CPP |
| 585 | #define ECB_EXTERN_C extern "C" |
625 | #define ECB_EXTERN_C extern "C" |
| 586 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
626 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
| 587 | #define ECB_EXTERN_C_END } |
627 | #define ECB_EXTERN_C_END } |
| … | |
… | |
| 602 | |
642 | |
| 603 | #if ECB_NO_SMP |
643 | #if ECB_NO_SMP |
| 604 | #define ECB_MEMORY_FENCE do { } while (0) |
644 | #define ECB_MEMORY_FENCE do { } while (0) |
| 605 | #endif |
645 | #endif |
| 606 | |
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 | |
| 607 | #ifndef ECB_MEMORY_FENCE |
652 | #ifndef ECB_MEMORY_FENCE |
| 608 | #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 |
| 609 | #if __i386 || __i386__ |
654 | #if __i386 || __i386__ |
| 610 | #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") |
| 611 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
656 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
| 612 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
657 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 613 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
658 | #elif ECB_GCC_AMD64 |
| 614 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
659 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
| 615 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
660 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
| 616 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
661 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 617 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
662 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
| 618 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
| … | |
… | |
| 620 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
665 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
| 621 | #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") |
| 622 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
667 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
| 623 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
668 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
| 624 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
669 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
| 625 | #elif __sparc || __sparc__ |
670 | #elif __aarch64__ |
|
|
671 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
672 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
| 626 | #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") |
| 627 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
674 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
| 628 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
675 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
| 629 | #elif defined __s390__ || defined __s390x__ |
676 | #elif defined __s390__ || defined __s390x__ |
| 630 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
677 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
| … | |
… | |
| 651 | |
698 | |
| 652 | #ifndef ECB_MEMORY_FENCE |
699 | #ifndef ECB_MEMORY_FENCE |
| 653 | #if ECB_GCC_VERSION(4,7) |
700 | #if ECB_GCC_VERSION(4,7) |
| 654 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
701 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 655 | #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) |
| 656 | |
705 | |
| 657 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
706 | #elif ECB_CLANG_EXTENSION(c_atomic) |
| 658 | * without risking compile time errors with other compilers. We *could* |
|
|
| 659 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
| 660 | * around this shit time and again. |
|
|
| 661 | * #elif defined __clang && __has_feature (cxx_atomic) |
|
|
| 662 | * // see comment below (stdatomic.h) about the C11 memory model. |
707 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 663 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
708 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
| 664 | */ |
709 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
710 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
| 665 | |
711 | |
| 666 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
712 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
| 667 | #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() |
| 668 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
720 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
| 669 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
721 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
| 670 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
722 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
| 671 | #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 */ |
| 672 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
724 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
| … | |
… | |
| 692 | /* 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. */ |
| 693 | /* 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 */ |
| 694 | /* for most usages, or gcc and clang have a bug */ |
746 | /* for most usages, or gcc and clang have a bug */ |
| 695 | /* I *currently* lean towards the latter, and inefficiently implement */ |
747 | /* I *currently* lean towards the latter, and inefficiently implement */ |
| 696 | /* 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 */ |
| 697 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
751 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
| 698 | #endif |
752 | #endif |
| 699 | #endif |
753 | #endif |
| 700 | |
754 | |
| 701 | #ifndef ECB_MEMORY_FENCE |
755 | #ifndef ECB_MEMORY_FENCE |
| … | |
… | |
| 724 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
778 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
| 725 | #endif |
779 | #endif |
| 726 | |
780 | |
| 727 | /*****************************************************************************/ |
781 | /*****************************************************************************/ |
| 728 | |
782 | |
| 729 | #if __cplusplus |
783 | #if ECB_CPP |
| 730 | #define ecb_inline static inline |
784 | #define ecb_inline static inline |
| 731 | #elif ECB_GCC_VERSION(2,5) |
785 | #elif ECB_GCC_VERSION(2,5) |
| 732 | #define ecb_inline static __inline__ |
786 | #define ecb_inline static __inline__ |
| 733 | #elif ECB_C99 |
787 | #elif ECB_C99 |
| 734 | #define ecb_inline static inline |
788 | #define ecb_inline static inline |
| … | |
… | |
| 748 | |
802 | |
| 749 | #define ECB_CONCAT_(a, b) a ## b |
803 | #define ECB_CONCAT_(a, b) a ## b |
| 750 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
804 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
| 751 | #define ECB_STRINGIFY_(a) # a |
805 | #define ECB_STRINGIFY_(a) # a |
| 752 | #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)) |
| 753 | |
808 | |
| 754 | #define ecb_function_ ecb_inline |
809 | #define ecb_function_ ecb_inline |
| 755 | |
810 | |
| 756 | #if ECB_GCC_VERSION(3,1) |
811 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
| 757 | #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) |
| 758 | #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) |
| 759 | #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) |
| 760 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
834 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
| 761 | #else |
835 | #else |
| 762 | #define ecb_attribute(attrlist) |
|
|
| 763 | #define ecb_is_constant(expr) 0 |
|
|
| 764 | #define ecb_expect(expr,value) (expr) |
|
|
| 765 | #define ecb_prefetch(addr,rw,locality) |
836 | #define ecb_prefetch(addr,rw,locality) |
| 766 | #endif |
837 | #endif |
| 767 | |
838 | |
| 768 | /* no emulation for ecb_decltype */ |
839 | /* no emulation for ecb_decltype */ |
| 769 | #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; }; |
| 770 | #define ecb_decltype(x) __decltype(x) |
843 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
| 771 | #elif ECB_GCC_VERSION(3,0) |
844 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
| 772 | #define ecb_decltype(x) __typeof(x) |
845 | #define ecb_decltype(x) __typeof__ (x) |
| 773 | #endif |
846 | #endif |
| 774 | |
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 |
| 775 | #define ecb_noinline ecb_attribute ((__noinline__)) |
865 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
866 | #endif |
|
|
867 | |
| 776 | #define ecb_unused ecb_attribute ((__unused__)) |
868 | #define ecb_unused ecb_attribute ((__unused__)) |
| 777 | #define ecb_const ecb_attribute ((__const__)) |
869 | #define ecb_const ecb_attribute ((__const__)) |
| 778 | #define ecb_pure ecb_attribute ((__pure__)) |
870 | #define ecb_pure ecb_attribute ((__pure__)) |
| 779 | |
871 | |
| 780 | #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 */ |
| 781 | #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) |
| 782 | #else |
880 | #else |
| 783 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
881 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
| 784 | #endif |
882 | #endif |
| 785 | |
883 | |
| 786 | #if ECB_GCC_VERSION(4,3) |
884 | #if ECB_GCC_VERSION(4,3) |
| … | |
… | |
| 801 | /* for compatibility to the rest of the world */ |
899 | /* for compatibility to the rest of the world */ |
| 802 | #define ecb_likely(expr) ecb_expect_true (expr) |
900 | #define ecb_likely(expr) ecb_expect_true (expr) |
| 803 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
901 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
| 804 | |
902 | |
| 805 | /* count trailing zero bits and count # of one bits */ |
903 | /* count trailing zero bits and count # of one bits */ |
| 806 | #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)) |
| 807 | /* 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 */ |
| 808 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
909 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
| 809 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
910 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
| 810 | #define ecb_ctz32(x) __builtin_ctz (x) |
911 | #define ecb_ctz32(x) __builtin_ctz (x) |
| 811 | #define ecb_ctz64(x) __builtin_ctzll (x) |
912 | #define ecb_ctz64(x) __builtin_ctzll (x) |
| 812 | #define ecb_popcount32(x) __builtin_popcount (x) |
913 | #define ecb_popcount32(x) __builtin_popcount (x) |
| 813 | /* no popcountll */ |
914 | /* no popcountll */ |
| 814 | #else |
915 | #else |
| 815 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
916 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
| 816 | ecb_function_ int |
917 | ecb_function_ ecb_const int |
| 817 | ecb_ctz32 (uint32_t x) |
918 | ecb_ctz32 (uint32_t x) |
| 818 | { |
919 | { |
| 819 | int r = 0; |
920 | int r = 0; |
| 820 | |
921 | |
| 821 | x &= ~x + 1; /* this isolates the lowest bit */ |
922 | x &= ~x + 1; /* this isolates the lowest bit */ |
| … | |
… | |
| 835 | #endif |
936 | #endif |
| 836 | |
937 | |
| 837 | return r; |
938 | return r; |
| 838 | } |
939 | } |
| 839 | |
940 | |
| 840 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
941 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
| 841 | ecb_function_ int |
942 | ecb_function_ ecb_const int |
| 842 | ecb_ctz64 (uint64_t x) |
943 | ecb_ctz64 (uint64_t x) |
| 843 | { |
944 | { |
| 844 | int shift = x & 0xffffffffU ? 0 : 32; |
945 | int shift = x & 0xffffffffU ? 0 : 32; |
| 845 | return ecb_ctz32 (x >> shift) + shift; |
946 | return ecb_ctz32 (x >> shift) + shift; |
| 846 | } |
947 | } |
| 847 | |
948 | |
| 848 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
949 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
| 849 | ecb_function_ int |
950 | ecb_function_ ecb_const int |
| 850 | ecb_popcount32 (uint32_t x) |
951 | ecb_popcount32 (uint32_t x) |
| 851 | { |
952 | { |
| 852 | x -= (x >> 1) & 0x55555555; |
953 | x -= (x >> 1) & 0x55555555; |
| 853 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
954 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
| 854 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
955 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
| 855 | x *= 0x01010101; |
956 | x *= 0x01010101; |
| 856 | |
957 | |
| 857 | return x >> 24; |
958 | return x >> 24; |
| 858 | } |
959 | } |
| 859 | |
960 | |
| 860 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
961 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
| 861 | ecb_function_ int ecb_ld32 (uint32_t x) |
962 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
| 862 | { |
963 | { |
| 863 | int r = 0; |
964 | int r = 0; |
| 864 | |
965 | |
| 865 | if (x >> 16) { x >>= 16; r += 16; } |
966 | if (x >> 16) { x >>= 16; r += 16; } |
| 866 | if (x >> 8) { x >>= 8; r += 8; } |
967 | if (x >> 8) { x >>= 8; r += 8; } |
| … | |
… | |
| 869 | if (x >> 1) { r += 1; } |
970 | if (x >> 1) { r += 1; } |
| 870 | |
971 | |
| 871 | return r; |
972 | return r; |
| 872 | } |
973 | } |
| 873 | |
974 | |
| 874 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
975 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
| 875 | ecb_function_ int ecb_ld64 (uint64_t x) |
976 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
| 876 | { |
977 | { |
| 877 | int r = 0; |
978 | int r = 0; |
| 878 | |
979 | |
| 879 | if (x >> 32) { x >>= 32; r += 32; } |
980 | if (x >> 32) { x >>= 32; r += 32; } |
| 880 | |
981 | |
| 881 | return r + ecb_ld32 (x); |
982 | return r + ecb_ld32 (x); |
| 882 | } |
983 | } |
| 883 | #endif |
984 | #endif |
| 884 | |
985 | |
| 885 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
986 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
| 886 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
987 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
| 887 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
988 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
| 888 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
989 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
| 889 | |
990 | |
| 890 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
991 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
| 891 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
992 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
| 892 | { |
993 | { |
| 893 | return ( (x * 0x0802U & 0x22110U) |
994 | return ( (x * 0x0802U & 0x22110U) |
| 894 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
995 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
| 895 | } |
996 | } |
| 896 | |
997 | |
| 897 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
998 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
| 898 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
999 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
| 899 | { |
1000 | { |
| 900 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
1001 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
| 901 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
1002 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
| 902 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
1003 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
| 903 | x = ( x >> 8 ) | ( x << 8); |
1004 | x = ( x >> 8 ) | ( x << 8); |
| 904 | |
1005 | |
| 905 | return x; |
1006 | return x; |
| 906 | } |
1007 | } |
| 907 | |
1008 | |
| 908 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
1009 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
| 909 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
1010 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
| 910 | { |
1011 | { |
| 911 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
1012 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
| 912 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
1013 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
| 913 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
1014 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
| 914 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
1015 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
| … | |
… | |
| 917 | return x; |
1018 | return x; |
| 918 | } |
1019 | } |
| 919 | |
1020 | |
| 920 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
1021 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
| 921 | /* so for this version we are lazy */ |
1022 | /* so for this version we are lazy */ |
| 922 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
1023 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
| 923 | ecb_function_ int |
1024 | ecb_function_ ecb_const int |
| 924 | ecb_popcount64 (uint64_t x) |
1025 | ecb_popcount64 (uint64_t x) |
| 925 | { |
1026 | { |
| 926 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
1027 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
| 927 | } |
1028 | } |
| 928 | |
1029 | |
| 929 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
1030 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
| 930 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
1031 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
| 931 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
1032 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
| 932 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
1033 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
| 933 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
1034 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
| 934 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
1035 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
| 935 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
1036 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
| 936 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
1037 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
| 937 | |
1038 | |
| 938 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
1039 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
| 939 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
1040 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
| 940 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
1041 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
| 941 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
1042 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
| 942 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
1043 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
| 943 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
1044 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
| 944 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
1045 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
| 945 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
1046 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
| 946 | |
1047 | |
| 947 | #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 |
| 948 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
1052 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1053 | #endif |
| 949 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
1054 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
| 950 | #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))) |
| 951 | #else |
1061 | #else |
| 952 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
1062 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
| 953 | ecb_function_ uint16_t |
1063 | ecb_function_ ecb_const uint16_t |
| 954 | ecb_bswap16 (uint16_t x) |
1064 | ecb_bswap16 (uint16_t x) |
| 955 | { |
1065 | { |
| 956 | return ecb_rotl16 (x, 8); |
1066 | return ecb_rotl16 (x, 8); |
| 957 | } |
1067 | } |
| 958 | |
1068 | |
| 959 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
1069 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
| 960 | ecb_function_ uint32_t |
1070 | ecb_function_ ecb_const uint32_t |
| 961 | ecb_bswap32 (uint32_t x) |
1071 | ecb_bswap32 (uint32_t x) |
| 962 | { |
1072 | { |
| 963 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
1073 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
| 964 | } |
1074 | } |
| 965 | |
1075 | |
| 966 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
1076 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
| 967 | ecb_function_ uint64_t |
1077 | ecb_function_ ecb_const uint64_t |
| 968 | ecb_bswap64 (uint64_t x) |
1078 | ecb_bswap64 (uint64_t x) |
| 969 | { |
1079 | { |
| 970 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
1080 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
| 971 | } |
1081 | } |
| 972 | #endif |
1082 | #endif |
| 973 | |
1083 | |
| 974 | #if ECB_GCC_VERSION(4,5) |
1084 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
| 975 | #define ecb_unreachable() __builtin_unreachable () |
1085 | #define ecb_unreachable() __builtin_unreachable () |
| 976 | #else |
1086 | #else |
| 977 | /* 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 :/ */ |
| 978 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1088 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
| 979 | ecb_inline void ecb_unreachable (void) { } |
1089 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
| 980 | #endif |
1090 | #endif |
| 981 | |
1091 | |
| 982 | /* try to tell the compiler that some condition is definitely true */ |
1092 | /* try to tell the compiler that some condition is definitely true */ |
| 983 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
1093 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
| 984 | |
1094 | |
| 985 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1095 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
| 986 | ecb_inline unsigned char |
1096 | ecb_inline ecb_const unsigned char |
| 987 | ecb_byteorder_helper (void) |
1097 | ecb_byteorder_helper (void) |
| 988 | { |
1098 | { |
| 989 | /* the union code still generates code under pressure in gcc, */ |
1099 | /* the union code still generates code under pressure in gcc, */ |
| 990 | /* but less than using pointers, and always seems to */ |
1100 | /* but less than using pointers, and always seems to */ |
| 991 | /* successfully return a constant. */ |
1101 | /* successfully return a constant. */ |
| 992 | /* the reason why we have this horrible preprocessor mess */ |
1102 | /* the reason why we have this horrible preprocessor mess */ |
| 993 | /* 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 */ |
| 994 | /* or when using a recent enough gcc version (>= 4.6) */ |
1104 | /* or when using a recent enough gcc version (>= 4.6) */ |
| 995 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
1105 | #if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
| 996 | return 0x44; |
1106 | return 0x44; |
| 997 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
1107 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
| 998 | return 0x44; |
1108 | return 0x44; |
| 999 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
1109 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
| 1000 | return 0x11; |
1110 | return 0x11; |
| … | |
… | |
| 1006 | } u = { 0x11223344 }; |
1116 | } u = { 0x11223344 }; |
| 1007 | return u.c; |
1117 | return u.c; |
| 1008 | #endif |
1118 | #endif |
| 1009 | } |
1119 | } |
| 1010 | |
1120 | |
| 1011 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1121 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
| 1012 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1122 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
| 1013 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1123 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
| 1014 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
1124 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
| 1015 | |
1125 | |
| 1016 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1126 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
| 1017 | #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)) |
| 1018 | #else |
1128 | #else |
| 1019 | #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))) |
| 1020 | #endif |
1130 | #endif |
| 1021 | |
1131 | |
| 1022 | #if __cplusplus |
1132 | #if ECB_CPP |
| 1023 | template<typename T> |
1133 | template<typename T> |
| 1024 | static inline T ecb_div_rd (T val, T div) |
1134 | static inline T ecb_div_rd (T val, T div) |
| 1025 | { |
1135 | { |
| 1026 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
1136 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
| 1027 | } |
1137 | } |
| … | |
… | |
| 1051 | |
1161 | |
| 1052 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
1162 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
| 1053 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
1163 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
| 1054 | #if 0 \ |
1164 | #if 0 \ |
| 1055 | || __i386 || __i386__ \ |
1165 | || __i386 || __i386__ \ |
| 1056 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
1166 | || ECB_GCC_AMD64 \ |
| 1057 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
1167 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
| 1058 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
| 1059 | || defined __s390__ || defined __s390x__ \ |
1168 | || defined __s390__ || defined __s390x__ \ |
| 1060 | || defined __mips__ \ |
1169 | || defined __mips__ \ |
| 1061 | || defined __alpha__ \ |
1170 | || defined __alpha__ \ |
| 1062 | || defined __hppa__ \ |
1171 | || defined __hppa__ \ |
| 1063 | || defined __ia64__ \ |
1172 | || defined __ia64__ \ |
| 1064 | || defined __m68k__ \ |
1173 | || defined __m68k__ \ |
| 1065 | || defined __m88k__ \ |
1174 | || defined __m88k__ \ |
| 1066 | || defined __sh__ \ |
1175 | || defined __sh__ \ |
| 1067 | || 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__ |
| 1068 | #define ECB_STDFP 1 |
1179 | #define ECB_STDFP 1 |
| 1069 | #include <string.h> /* for memcpy */ |
1180 | #include <string.h> /* for memcpy */ |
| 1070 | #else |
1181 | #else |
| 1071 | #define ECB_STDFP 0 |
1182 | #define ECB_STDFP 0 |
| 1072 | #endif |
1183 | #endif |
| 1073 | |
1184 | |
| 1074 | #ifndef ECB_NO_LIBM |
1185 | #ifndef ECB_NO_LIBM |
| 1075 | |
1186 | |
| 1076 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
1187 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
| 1077 | |
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 | |
| 1078 | #ifdef NEN |
1196 | #ifdef NAN |
| 1079 | #define ECB_NAN NAN |
1197 | #define ECB_NAN NAN |
| 1080 | #else |
1198 | #else |
| 1081 | #define ECB_NAN INFINITY |
1199 | #define ECB_NAN ECB_INFINITY |
| 1082 | #endif |
1200 | #endif |
| 1083 | |
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 | |
| 1084 | /* converts an ieee half/binary16 to a float */ |
1210 | /* converts an ieee half/binary16 to a float */ |
| 1085 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
1211 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
| 1086 | ecb_function_ float |
1212 | ecb_function_ ecb_const float |
| 1087 | ecb_binary16_to_float (uint16_t x) |
1213 | ecb_binary16_to_float (uint16_t x) |
| 1088 | { |
1214 | { |
| 1089 | int e = (x >> 10) & 0x1f; |
1215 | int e = (x >> 10) & 0x1f; |
| 1090 | int m = x & 0x3ff; |
1216 | int m = x & 0x3ff; |
| 1091 | float r; |
1217 | float r; |
| 1092 | |
1218 | |
| 1093 | if (!e ) r = ldexpf (m , -24); |
1219 | if (!e ) r = ecb_ldexpf (m , -24); |
| 1094 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
1220 | else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
| 1095 | else if (m ) r = ECB_NAN; |
1221 | else if (m ) r = ECB_NAN; |
| 1096 | else r = INFINITY; |
1222 | else r = ECB_INFINITY; |
| 1097 | |
1223 | |
| 1098 | return x & 0x8000 ? -r : r; |
1224 | return x & 0x8000 ? -r : r; |
| 1099 | } |
1225 | } |
| 1100 | |
1226 | |
| 1101 | /* convert a float to ieee single/binary32 */ |
1227 | /* convert a float to ieee single/binary32 */ |
| 1102 | 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); |
| 1103 | ecb_function_ uint32_t |
1229 | ecb_function_ ecb_const uint32_t |
| 1104 | ecb_float_to_binary32 (float x) |
1230 | ecb_float_to_binary32 (float x) |
| 1105 | { |
1231 | { |
| 1106 | uint32_t r; |
1232 | uint32_t r; |
| 1107 | |
1233 | |
| 1108 | #if ECB_STDFP |
1234 | #if ECB_STDFP |
| … | |
… | |
| 1115 | if (x == 0e0f ) return 0x00000000U; |
1241 | if (x == 0e0f ) return 0x00000000U; |
| 1116 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
1242 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
| 1117 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
1243 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
| 1118 | if (x != x ) return 0x7fbfffffU; |
1244 | if (x != x ) return 0x7fbfffffU; |
| 1119 | |
1245 | |
| 1120 | m = frexpf (x, &e) * 0x1000000U; |
1246 | m = ecb_frexpf (x, &e) * 0x1000000U; |
| 1121 | |
1247 | |
| 1122 | r = m & 0x80000000U; |
1248 | r = m & 0x80000000U; |
| 1123 | |
1249 | |
| 1124 | if (r) |
1250 | if (r) |
| 1125 | m = -m; |
1251 | m = -m; |
| … | |
… | |
| 1137 | |
1263 | |
| 1138 | return r; |
1264 | return r; |
| 1139 | } |
1265 | } |
| 1140 | |
1266 | |
| 1141 | /* converts an ieee single/binary32 to a float */ |
1267 | /* converts an ieee single/binary32 to a float */ |
| 1142 | 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); |
| 1143 | ecb_function_ float |
1269 | ecb_function_ ecb_const float |
| 1144 | ecb_binary32_to_float (uint32_t x) |
1270 | ecb_binary32_to_float (uint32_t x) |
| 1145 | { |
1271 | { |
| 1146 | float r; |
1272 | float r; |
| 1147 | |
1273 | |
| 1148 | #if ECB_STDFP |
1274 | #if ECB_STDFP |
| … | |
… | |
| 1158 | x |= 0x800000U; |
1284 | x |= 0x800000U; |
| 1159 | else |
1285 | else |
| 1160 | e = 1; |
1286 | e = 1; |
| 1161 | |
1287 | |
| 1162 | /* 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 */ |
| 1163 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
1289 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
| 1164 | |
1290 | |
| 1165 | r = neg ? -r : r; |
1291 | r = neg ? -r : r; |
| 1166 | #endif |
1292 | #endif |
| 1167 | |
1293 | |
| 1168 | return r; |
1294 | return r; |
| 1169 | } |
1295 | } |
| 1170 | |
1296 | |
| 1171 | /* convert a double to ieee double/binary64 */ |
1297 | /* convert a double to ieee double/binary64 */ |
| 1172 | 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); |
| 1173 | ecb_function_ uint64_t |
1299 | ecb_function_ ecb_const uint64_t |
| 1174 | ecb_double_to_binary64 (double x) |
1300 | ecb_double_to_binary64 (double x) |
| 1175 | { |
1301 | { |
| 1176 | uint64_t r; |
1302 | uint64_t r; |
| 1177 | |
1303 | |
| 1178 | #if ECB_STDFP |
1304 | #if ECB_STDFP |
| … | |
… | |
| 1207 | |
1333 | |
| 1208 | return r; |
1334 | return r; |
| 1209 | } |
1335 | } |
| 1210 | |
1336 | |
| 1211 | /* converts an ieee double/binary64 to a double */ |
1337 | /* converts an ieee double/binary64 to a double */ |
| 1212 | 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); |
| 1213 | ecb_function_ double |
1339 | ecb_function_ ecb_const double |
| 1214 | ecb_binary64_to_double (uint64_t x) |
1340 | ecb_binary64_to_double (uint64_t x) |
| 1215 | { |
1341 | { |
| 1216 | double r; |
1342 | double r; |
| 1217 | |
1343 | |
| 1218 | #if ECB_STDFP |
1344 | #if ECB_STDFP |
| … | |
… | |
| 2548 | { |
2674 | { |
| 2549 | return userdata; |
2675 | return userdata; |
| 2550 | } |
2676 | } |
| 2551 | |
2677 | |
| 2552 | void |
2678 | void |
| 2553 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2679 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
| 2554 | { |
2680 | { |
| 2555 | invoke_cb = invoke_pending_cb; |
2681 | invoke_cb = invoke_pending_cb; |
| 2556 | } |
2682 | } |
| 2557 | |
2683 | |
| 2558 | void |
2684 | void |
| … | |
… | |
| 2790 | #if EV_USE_INOTIFY |
2916 | #if EV_USE_INOTIFY |
| 2791 | infy_fork (EV_A); |
2917 | infy_fork (EV_A); |
| 2792 | #endif |
2918 | #endif |
| 2793 | |
2919 | |
| 2794 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2920 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
| 2795 | if (ev_is_active (&pipe_w)) |
2921 | if (ev_is_active (&pipe_w) && postfork != 2) |
| 2796 | { |
2922 | { |
| 2797 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
2923 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
| 2798 | |
2924 | |
| 2799 | ev_ref (EV_A); |
2925 | ev_ref (EV_A); |
| 2800 | ev_io_stop (EV_A_ &pipe_w); |
2926 | ev_io_stop (EV_A_ &pipe_w); |
