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 |
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|
51 | # endif |
51 | # endif |
52 | # endif |
52 | #endif |
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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, */ |
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248 | /* but consider reporting it, too! :) */ |
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249 | # define EV_NSIG 65 |
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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 |
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258 | # endif |
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259 | #endif |
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260 | |
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261 | #if !(_POSIX_TIMERS > 0) |
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262 | # ifndef EV_USE_MONOTONIC |
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263 | # define EV_USE_MONOTONIC 0 |
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264 | # endif |
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265 | # ifndef EV_USE_REALTIME |
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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. |
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520 | * |
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521 | * Alternatively, the contents of this file may be used under the terms of |
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522 | * the GNU General Public License ("GPL") version 2 or any later version, |
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523 | * in which case the provisions of the GPL are applicable instead of |
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524 | * the above. If you wish to allow the use of your version of this file |
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525 | * only under the terms of the GPL and not to allow others to use your |
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526 | * version of this file under the BSD license, indicate your decision |
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527 | * by deleting the provisions above and replace them with the notice |
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528 | * and other provisions required by the GPL. If you do not delete the |
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529 | * provisions above, a recipient may use your version of this file under |
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530 | * either the BSD or the GPL. |
514 | */ |
531 | */ |
515 | |
532 | |
516 | #ifndef ECB_H |
533 | #ifndef ECB_H |
517 | #define ECB_H |
534 | #define ECB_H |
518 | |
535 | |
519 | /* 16 bits major, 16 bits minor */ |
536 | /* 16 bits major, 16 bits minor */ |
520 | #define ECB_VERSION 0x00010002 |
537 | #define ECB_VERSION 0x00010004 |
521 | |
538 | |
522 | #ifdef _WIN32 |
539 | #ifdef _WIN32 |
523 | typedef signed char int8_t; |
540 | typedef signed char int8_t; |
524 | typedef unsigned char uint8_t; |
541 | typedef unsigned char uint8_t; |
525 | typedef signed short int16_t; |
542 | typedef signed short int16_t; |
… | |
… | |
549 | #else |
566 | #else |
550 | #define ECB_PTRSIZE 4 |
567 | #define ECB_PTRSIZE 4 |
551 | #endif |
568 | #endif |
552 | #endif |
569 | #endif |
553 | |
570 | |
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571 | /* work around x32 idiocy by defining proper macros */ |
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572 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
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573 | #if _ILP32 |
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574 | #define ECB_AMD64_X32 1 |
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575 | #else |
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576 | #define ECB_AMD64 1 |
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577 | #endif |
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578 | #endif |
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579 | |
554 | /* many compilers define _GNUC_ to some versions but then only implement |
580 | /* many compilers define _GNUC_ to some versions but then only implement |
555 | * what their idiot authors think are the "more important" extensions, |
581 | * what their idiot authors think are the "more important" extensions, |
556 | * causing enormous grief in return for some better fake benchmark numbers. |
582 | * causing enormous grief in return for some better fake benchmark numbers. |
557 | * or so. |
583 | * or so. |
558 | * we try to detect these and simply assume they are not gcc - if they have |
584 | * 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. |
585 | * an issue with that they should have done it right in the first place. |
560 | */ |
586 | */ |
561 | #ifndef ECB_GCC_VERSION |
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562 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
587 | #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 |
588 | #define ECB_GCC_VERSION(major,minor) 0 |
564 | #else |
589 | #else |
565 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
590 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
566 | #endif |
591 | #endif |
567 | #endif |
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568 | |
592 | |
569 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
593 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
570 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
594 | |
571 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
595 | #if __clang__ && defined __has_builtin |
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596 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
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597 | #else |
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598 | #define ECB_CLANG_BUILTIN(x) 0 |
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599 | #endif |
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600 | |
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601 | #if __clang__ && defined __has_extension |
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602 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
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603 | #else |
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604 | #define ECB_CLANG_EXTENSION(x) 0 |
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605 | #endif |
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606 | |
572 | #define ECB_CPP (__cplusplus+0) |
607 | #define ECB_CPP (__cplusplus+0) |
573 | #define ECB_CPP11 (__cplusplus >= 201103L) |
608 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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609 | |
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610 | #if ECB_CPP |
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611 | #define ECB_C 0 |
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612 | #define ECB_STDC_VERSION 0 |
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613 | #else |
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614 | #define ECB_C 1 |
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615 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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616 | #endif |
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617 | |
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618 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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619 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
574 | |
620 | |
575 | #if ECB_CPP |
621 | #if ECB_CPP |
576 | #define ECB_EXTERN_C extern "C" |
622 | #define ECB_EXTERN_C extern "C" |
577 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
623 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
578 | #define ECB_EXTERN_C_END } |
624 | #define ECB_EXTERN_C_END } |
… | |
… | |
611 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
657 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
612 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
658 | #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__ \ |
659 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
614 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
660 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
615 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
661 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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662 | #elif __aarch64__ |
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663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
616 | #elif __sparc || __sparc__ |
664 | #elif (__sparc || __sparc__) && !__sparcv8 |
617 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
665 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
618 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
666 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
619 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
667 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
620 | #elif defined __s390__ || defined __s390x__ |
668 | #elif defined __s390__ || defined __s390x__ |
621 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
669 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
622 | #elif defined __mips__ |
670 | #elif defined __mips__ |
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671 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
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672 | /* 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") |
673 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
624 | #elif defined __alpha__ |
674 | #elif defined __alpha__ |
625 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
675 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
626 | #elif defined __hppa__ |
676 | #elif defined __hppa__ |
627 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
677 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
628 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
678 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
629 | #elif defined __ia64__ |
679 | #elif defined __ia64__ |
630 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
680 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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681 | #elif defined __m68k__ |
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682 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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683 | #elif defined __m88k__ |
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684 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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685 | #elif defined __sh__ |
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686 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
631 | #endif |
687 | #endif |
632 | #endif |
688 | #endif |
633 | #endif |
689 | #endif |
634 | |
690 | |
635 | #ifndef ECB_MEMORY_FENCE |
691 | #ifndef ECB_MEMORY_FENCE |
636 | #if ECB_GCC_VERSION(4,7) |
692 | #if ECB_GCC_VERSION(4,7) |
637 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
693 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
638 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
694 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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695 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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696 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
639 | |
697 | |
640 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
698 | #elif ECB_CLANG_EXTENSION(c_atomic) |
641 | * without risking compile time errors with other compilers. We *could* |
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642 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
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643 | * around this shit time and again. |
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644 | * #elif defined __clang && __has_feature (cxx_atomic) |
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645 | * // see comment below (stdatomic.h) about the C11 memory model. |
699 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
646 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
700 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
647 | */ |
701 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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702 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
648 | |
703 | |
649 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
704 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
650 | #define ECB_MEMORY_FENCE __sync_synchronize () |
705 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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706 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
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707 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
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708 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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709 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
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710 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
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711 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
651 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
712 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
652 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
713 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
653 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
714 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
654 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
715 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
655 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
716 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
675 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
736 | /* 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 */ |
737 | /* 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 */ |
738 | /* for most usages, or gcc and clang have a bug */ |
678 | /* I *currently* lean towards the latter, and inefficiently implement */ |
739 | /* I *currently* lean towards the latter, and inefficiently implement */ |
679 | /* all three of ecb's fences as a seq_cst fence */ |
740 | /* all three of ecb's fences as a seq_cst fence */ |
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741 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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742 | /* for all __atomic_thread_fence's except seq_cst */ |
680 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
743 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
681 | #endif |
744 | #endif |
682 | #endif |
745 | #endif |
683 | |
746 | |
684 | #ifndef ECB_MEMORY_FENCE |
747 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
707 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
770 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
708 | #endif |
771 | #endif |
709 | |
772 | |
710 | /*****************************************************************************/ |
773 | /*****************************************************************************/ |
711 | |
774 | |
712 | #if __cplusplus |
775 | #if ECB_CPP |
713 | #define ecb_inline static inline |
776 | #define ecb_inline static inline |
714 | #elif ECB_GCC_VERSION(2,5) |
777 | #elif ECB_GCC_VERSION(2,5) |
715 | #define ecb_inline static __inline__ |
778 | #define ecb_inline static __inline__ |
716 | #elif ECB_C99 |
779 | #elif ECB_C99 |
717 | #define ecb_inline static inline |
780 | #define ecb_inline static inline |
… | |
… | |
734 | #define ECB_STRINGIFY_(a) # a |
797 | #define ECB_STRINGIFY_(a) # a |
735 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
798 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
736 | |
799 | |
737 | #define ecb_function_ ecb_inline |
800 | #define ecb_function_ ecb_inline |
738 | |
801 | |
739 | #if ECB_GCC_VERSION(3,1) |
802 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
740 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
803 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
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804 | #else |
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805 | #define ecb_attribute(attrlist) |
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806 | #endif |
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807 | |
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808 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
741 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
809 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
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810 | #else |
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811 | /* possible C11 impl for integral types |
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812 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
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813 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
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814 | |
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815 | #define ecb_is_constant(expr) 0 |
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816 | #endif |
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817 | |
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818 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
742 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
819 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
820 | #else |
|
|
821 | #define ecb_expect(expr,value) (expr) |
|
|
822 | #endif |
|
|
823 | |
|
|
824 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
743 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
825 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
744 | #else |
826 | #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) |
827 | #define ecb_prefetch(addr,rw,locality) |
749 | #endif |
828 | #endif |
750 | |
829 | |
751 | /* no emulation for ecb_decltype */ |
830 | /* no emulation for ecb_decltype */ |
752 | #if ECB_GCC_VERSION(4,5) |
831 | #if ECB_CPP11 |
|
|
832 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
833 | template<class T> struct ecb_decltype_t { typedef T type; }; |
753 | #define ecb_decltype(x) __decltype(x) |
834 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
754 | #elif ECB_GCC_VERSION(3,0) |
835 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
755 | #define ecb_decltype(x) __typeof(x) |
836 | #define ecb_decltype(x) __typeof__ (x) |
|
|
837 | #endif |
|
|
838 | |
|
|
839 | #if _MSC_VER >= 1300 |
|
|
840 | #define ecb_deprecated __declspec (deprecated) |
|
|
841 | #else |
|
|
842 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
756 | #endif |
843 | #endif |
757 | |
844 | |
758 | #define ecb_noinline ecb_attribute ((__noinline__)) |
845 | #define ecb_noinline ecb_attribute ((__noinline__)) |
759 | #define ecb_unused ecb_attribute ((__unused__)) |
846 | #define ecb_unused ecb_attribute ((__unused__)) |
760 | #define ecb_const ecb_attribute ((__const__)) |
847 | #define ecb_const ecb_attribute ((__const__)) |
761 | #define ecb_pure ecb_attribute ((__pure__)) |
848 | #define ecb_pure ecb_attribute ((__pure__)) |
762 | |
849 | |
763 | #if ECB_C11 |
850 | /* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
|
|
851 | #if ECB_C11 || __IBMC_NORETURN |
|
|
852 | /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */ |
764 | #define ecb_noreturn _Noreturn |
853 | #define ecb_noreturn _Noreturn |
765 | #else |
854 | #else |
766 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
855 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
767 | #endif |
856 | #endif |
768 | |
857 | |
… | |
… | |
784 | /* for compatibility to the rest of the world */ |
873 | /* for compatibility to the rest of the world */ |
785 | #define ecb_likely(expr) ecb_expect_true (expr) |
874 | #define ecb_likely(expr) ecb_expect_true (expr) |
786 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
875 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
787 | |
876 | |
788 | /* count trailing zero bits and count # of one bits */ |
877 | /* count trailing zero bits and count # of one bits */ |
789 | #if ECB_GCC_VERSION(3,4) |
878 | #if ECB_GCC_VERSION(3,4) \ |
|
|
879 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
880 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
881 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
790 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
882 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
791 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
883 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
792 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
884 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
793 | #define ecb_ctz32(x) __builtin_ctz (x) |
885 | #define ecb_ctz32(x) __builtin_ctz (x) |
794 | #define ecb_ctz64(x) __builtin_ctzll (x) |
886 | #define ecb_ctz64(x) __builtin_ctzll (x) |
795 | #define ecb_popcount32(x) __builtin_popcount (x) |
887 | #define ecb_popcount32(x) __builtin_popcount (x) |
796 | /* no popcountll */ |
888 | /* no popcountll */ |
797 | #else |
889 | #else |
798 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
890 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
799 | ecb_function_ int |
891 | ecb_function_ ecb_const int |
800 | ecb_ctz32 (uint32_t x) |
892 | ecb_ctz32 (uint32_t x) |
801 | { |
893 | { |
802 | int r = 0; |
894 | int r = 0; |
803 | |
895 | |
804 | x &= ~x + 1; /* this isolates the lowest bit */ |
896 | x &= ~x + 1; /* this isolates the lowest bit */ |
… | |
… | |
818 | #endif |
910 | #endif |
819 | |
911 | |
820 | return r; |
912 | return r; |
821 | } |
913 | } |
822 | |
914 | |
823 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
915 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
824 | ecb_function_ int |
916 | ecb_function_ ecb_const int |
825 | ecb_ctz64 (uint64_t x) |
917 | ecb_ctz64 (uint64_t x) |
826 | { |
918 | { |
827 | int shift = x & 0xffffffffU ? 0 : 32; |
919 | int shift = x & 0xffffffffU ? 0 : 32; |
828 | return ecb_ctz32 (x >> shift) + shift; |
920 | return ecb_ctz32 (x >> shift) + shift; |
829 | } |
921 | } |
830 | |
922 | |
831 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
923 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
832 | ecb_function_ int |
924 | ecb_function_ ecb_const int |
833 | ecb_popcount32 (uint32_t x) |
925 | ecb_popcount32 (uint32_t x) |
834 | { |
926 | { |
835 | x -= (x >> 1) & 0x55555555; |
927 | x -= (x >> 1) & 0x55555555; |
836 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
928 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
837 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
929 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
838 | x *= 0x01010101; |
930 | x *= 0x01010101; |
839 | |
931 | |
840 | return x >> 24; |
932 | return x >> 24; |
841 | } |
933 | } |
842 | |
934 | |
843 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
935 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
844 | ecb_function_ int ecb_ld32 (uint32_t x) |
936 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
845 | { |
937 | { |
846 | int r = 0; |
938 | int r = 0; |
847 | |
939 | |
848 | if (x >> 16) { x >>= 16; r += 16; } |
940 | if (x >> 16) { x >>= 16; r += 16; } |
849 | if (x >> 8) { x >>= 8; r += 8; } |
941 | if (x >> 8) { x >>= 8; r += 8; } |
… | |
… | |
852 | if (x >> 1) { r += 1; } |
944 | if (x >> 1) { r += 1; } |
853 | |
945 | |
854 | return r; |
946 | return r; |
855 | } |
947 | } |
856 | |
948 | |
857 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
949 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
858 | ecb_function_ int ecb_ld64 (uint64_t x) |
950 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
859 | { |
951 | { |
860 | int r = 0; |
952 | int r = 0; |
861 | |
953 | |
862 | if (x >> 32) { x >>= 32; r += 32; } |
954 | if (x >> 32) { x >>= 32; r += 32; } |
863 | |
955 | |
864 | return r + ecb_ld32 (x); |
956 | return r + ecb_ld32 (x); |
865 | } |
957 | } |
866 | #endif |
958 | #endif |
867 | |
959 | |
868 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
960 | 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)); } |
961 | 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; |
962 | 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)); } |
963 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
872 | |
964 | |
873 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
965 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
874 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
966 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
875 | { |
967 | { |
876 | return ( (x * 0x0802U & 0x22110U) |
968 | return ( (x * 0x0802U & 0x22110U) |
877 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
969 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
878 | } |
970 | } |
879 | |
971 | |
880 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
972 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
881 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
973 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
882 | { |
974 | { |
883 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
975 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
884 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
976 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
885 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
977 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
886 | x = ( x >> 8 ) | ( x << 8); |
978 | x = ( x >> 8 ) | ( x << 8); |
887 | |
979 | |
888 | return x; |
980 | return x; |
889 | } |
981 | } |
890 | |
982 | |
891 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
983 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
892 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
984 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
893 | { |
985 | { |
894 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
986 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
895 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
987 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
896 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
988 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
897 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
989 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
… | |
… | |
900 | return x; |
992 | return x; |
901 | } |
993 | } |
902 | |
994 | |
903 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
995 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
904 | /* so for this version we are lazy */ |
996 | /* so for this version we are lazy */ |
905 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
997 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
906 | ecb_function_ int |
998 | ecb_function_ ecb_const int |
907 | ecb_popcount64 (uint64_t x) |
999 | ecb_popcount64 (uint64_t x) |
908 | { |
1000 | { |
909 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
1001 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
910 | } |
1002 | } |
911 | |
1003 | |
912 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
1004 | 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; |
1005 | 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; |
1006 | 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; |
1007 | 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; |
1008 | 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; |
1009 | 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; |
1010 | 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; |
1011 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
920 | |
1012 | |
921 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
1013 | 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); } |
1014 | 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); } |
1015 | 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); } |
1016 | 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); } |
1017 | 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); } |
1018 | 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); } |
1019 | 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); } |
1020 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
929 | |
1021 | |
930 | #if ECB_GCC_VERSION(4,3) |
1022 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
931 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
1023 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
932 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
1024 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
933 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
1025 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
934 | #else |
1026 | #else |
935 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
1027 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
936 | ecb_function_ uint16_t |
1028 | ecb_function_ ecb_const uint16_t |
937 | ecb_bswap16 (uint16_t x) |
1029 | ecb_bswap16 (uint16_t x) |
938 | { |
1030 | { |
939 | return ecb_rotl16 (x, 8); |
1031 | return ecb_rotl16 (x, 8); |
940 | } |
1032 | } |
941 | |
1033 | |
942 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
1034 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
943 | ecb_function_ uint32_t |
1035 | ecb_function_ ecb_const uint32_t |
944 | ecb_bswap32 (uint32_t x) |
1036 | ecb_bswap32 (uint32_t x) |
945 | { |
1037 | { |
946 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
1038 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
947 | } |
1039 | } |
948 | |
1040 | |
949 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
1041 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
950 | ecb_function_ uint64_t |
1042 | ecb_function_ ecb_const uint64_t |
951 | ecb_bswap64 (uint64_t x) |
1043 | ecb_bswap64 (uint64_t x) |
952 | { |
1044 | { |
953 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
1045 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
954 | } |
1046 | } |
955 | #endif |
1047 | #endif |
956 | |
1048 | |
957 | #if ECB_GCC_VERSION(4,5) |
1049 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
958 | #define ecb_unreachable() __builtin_unreachable () |
1050 | #define ecb_unreachable() __builtin_unreachable () |
959 | #else |
1051 | #else |
960 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
1052 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
961 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1053 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
962 | ecb_inline void ecb_unreachable (void) { } |
1054 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
963 | #endif |
1055 | #endif |
964 | |
1056 | |
965 | /* try to tell the compiler that some condition is definitely true */ |
1057 | /* try to tell the compiler that some condition is definitely true */ |
966 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
1058 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
967 | |
1059 | |
968 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1060 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
969 | ecb_inline unsigned char |
1061 | ecb_inline ecb_const unsigned char |
970 | ecb_byteorder_helper (void) |
1062 | ecb_byteorder_helper (void) |
971 | { |
1063 | { |
972 | /* the union code still generates code under pressure in gcc, */ |
1064 | /* the union code still generates code under pressure in gcc, */ |
973 | /* but less than using pointers, and always seems to */ |
1065 | /* but less than using pointers, and always seems to */ |
974 | /* successfully return a constant. */ |
1066 | /* successfully return a constant. */ |
… | |
… | |
989 | } u = { 0x11223344 }; |
1081 | } u = { 0x11223344 }; |
990 | return u.c; |
1082 | return u.c; |
991 | #endif |
1083 | #endif |
992 | } |
1084 | } |
993 | |
1085 | |
994 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1086 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
995 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
1087 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
996 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1088 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
997 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
1089 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
998 | |
1090 | |
999 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1091 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1000 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
1092 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
1001 | #else |
1093 | #else |
1002 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
1094 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
1003 | #endif |
1095 | #endif |
1004 | |
1096 | |
1005 | #if __cplusplus |
1097 | #if ECB_CPP |
1006 | template<typename T> |
1098 | template<typename T> |
1007 | static inline T ecb_div_rd (T val, T div) |
1099 | static inline T ecb_div_rd (T val, T div) |
1008 | { |
1100 | { |
1009 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
1101 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
1010 | } |
1102 | } |
… | |
… | |
1036 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
1128 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
1037 | #if 0 \ |
1129 | #if 0 \ |
1038 | || __i386 || __i386__ \ |
1130 | || __i386 || __i386__ \ |
1039 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
1131 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
1040 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
1132 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
1041 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
1042 | || defined __s390__ || defined __s390x__ \ |
1133 | || defined __s390__ || defined __s390x__ \ |
1043 | || defined __mips__ \ |
1134 | || defined __mips__ \ |
1044 | || defined __alpha__ \ |
1135 | || defined __alpha__ \ |
1045 | || defined __hppa__ \ |
1136 | || defined __hppa__ \ |
1046 | || defined __ia64__ \ |
1137 | || defined __ia64__ \ |
|
|
1138 | || defined __m68k__ \ |
|
|
1139 | || defined __m88k__ \ |
|
|
1140 | || defined __sh__ \ |
1047 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
1141 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1142 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1143 | || defined __aarch64__ |
1048 | #define ECB_STDFP 1 |
1144 | #define ECB_STDFP 1 |
1049 | #include <string.h> /* for memcpy */ |
1145 | #include <string.h> /* for memcpy */ |
1050 | #else |
1146 | #else |
1051 | #define ECB_STDFP 0 |
1147 | #define ECB_STDFP 0 |
1052 | #include <math.h> /* for frexp*, ldexp* */ |
|
|
1053 | #endif |
1148 | #endif |
1054 | |
1149 | |
1055 | #ifndef ECB_NO_LIBM |
1150 | #ifndef ECB_NO_LIBM |
1056 | |
1151 | |
|
|
1152 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1153 | |
|
|
1154 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1155 | #ifdef INFINITY |
|
|
1156 | #define ECB_INFINITY INFINITY |
|
|
1157 | #else |
|
|
1158 | #define ECB_INFINITY HUGE_VAL |
|
|
1159 | #endif |
|
|
1160 | |
|
|
1161 | #ifdef NAN |
|
|
1162 | #define ECB_NAN NAN |
|
|
1163 | #else |
|
|
1164 | #define ECB_NAN ECB_INFINITY |
|
|
1165 | #endif |
|
|
1166 | |
|
|
1167 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1168 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1169 | #else |
|
|
1170 | #define ecb_ldexpf(x,e) (float) ldexp ((x), (e)) |
|
|
1171 | #endif |
|
|
1172 | |
|
|
1173 | /* converts an ieee half/binary16 to a float */ |
|
|
1174 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1175 | ecb_function_ ecb_const float |
|
|
1176 | ecb_binary16_to_float (uint16_t x) |
|
|
1177 | { |
|
|
1178 | int e = (x >> 10) & 0x1f; |
|
|
1179 | int m = x & 0x3ff; |
|
|
1180 | float r; |
|
|
1181 | |
|
|
1182 | if (!e ) r = ecb_ldexpf (m , -24); |
|
|
1183 | else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
|
|
1184 | else if (m ) r = ECB_NAN; |
|
|
1185 | else r = ECB_INFINITY; |
|
|
1186 | |
|
|
1187 | return x & 0x8000 ? -r : r; |
|
|
1188 | } |
|
|
1189 | |
1057 | /* convert a float to ieee single/binary32 */ |
1190 | /* convert a float to ieee single/binary32 */ |
1058 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
1191 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
1059 | ecb_function_ uint32_t |
1192 | ecb_function_ ecb_const uint32_t |
1060 | ecb_float_to_binary32 (float x) |
1193 | ecb_float_to_binary32 (float x) |
1061 | { |
1194 | { |
1062 | uint32_t r; |
1195 | uint32_t r; |
1063 | |
1196 | |
1064 | #if ECB_STDFP |
1197 | #if ECB_STDFP |
… | |
… | |
1093 | |
1226 | |
1094 | return r; |
1227 | return r; |
1095 | } |
1228 | } |
1096 | |
1229 | |
1097 | /* converts an ieee single/binary32 to a float */ |
1230 | /* converts an ieee single/binary32 to a float */ |
1098 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
1231 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
1099 | ecb_function_ float |
1232 | ecb_function_ ecb_const float |
1100 | ecb_binary32_to_float (uint32_t x) |
1233 | ecb_binary32_to_float (uint32_t x) |
1101 | { |
1234 | { |
1102 | float r; |
1235 | float r; |
1103 | |
1236 | |
1104 | #if ECB_STDFP |
1237 | #if ECB_STDFP |
… | |
… | |
1114 | x |= 0x800000U; |
1247 | x |= 0x800000U; |
1115 | else |
1248 | else |
1116 | e = 1; |
1249 | e = 1; |
1117 | |
1250 | |
1118 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
1251 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
1119 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
1252 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
1120 | |
1253 | |
1121 | r = neg ? -r : r; |
1254 | r = neg ? -r : r; |
1122 | #endif |
1255 | #endif |
1123 | |
1256 | |
1124 | return r; |
1257 | return r; |
1125 | } |
1258 | } |
1126 | |
1259 | |
1127 | /* convert a double to ieee double/binary64 */ |
1260 | /* convert a double to ieee double/binary64 */ |
1128 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
1261 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
1129 | ecb_function_ uint64_t |
1262 | ecb_function_ ecb_const uint64_t |
1130 | ecb_double_to_binary64 (double x) |
1263 | ecb_double_to_binary64 (double x) |
1131 | { |
1264 | { |
1132 | uint64_t r; |
1265 | uint64_t r; |
1133 | |
1266 | |
1134 | #if ECB_STDFP |
1267 | #if ECB_STDFP |
… | |
… | |
1163 | |
1296 | |
1164 | return r; |
1297 | return r; |
1165 | } |
1298 | } |
1166 | |
1299 | |
1167 | /* converts an ieee double/binary64 to a double */ |
1300 | /* converts an ieee double/binary64 to a double */ |
1168 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
1301 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
1169 | ecb_function_ double |
1302 | ecb_function_ ecb_const double |
1170 | ecb_binary64_to_double (uint64_t x) |
1303 | ecb_binary64_to_double (uint64_t x) |
1171 | { |
1304 | { |
1172 | double r; |
1305 | double r; |
1173 | |
1306 | |
1174 | #if ECB_STDFP |
1307 | #if ECB_STDFP |
… | |
… | |
2095 | ev_syserr ("(libev) error creating signal/async pipe"); |
2228 | ev_syserr ("(libev) error creating signal/async pipe"); |
2096 | |
2229 | |
2097 | fd_intern (fds [0]); |
2230 | fd_intern (fds [0]); |
2098 | } |
2231 | } |
2099 | |
2232 | |
2100 | fd_intern (fds [1]); |
|
|
2101 | |
|
|
2102 | evpipe [0] = fds [0]; |
2233 | evpipe [0] = fds [0]; |
2103 | |
2234 | |
2104 | if (evpipe [1] < 0) |
2235 | if (evpipe [1] < 0) |
2105 | evpipe [1] = fds [1]; /* first call, set write fd */ |
2236 | evpipe [1] = fds [1]; /* first call, set write fd */ |
2106 | else |
2237 | else |
… | |
… | |
2111 | /* so must not be executed on windows */ |
2242 | /* so must not be executed on windows */ |
2112 | |
2243 | |
2113 | dup2 (fds [1], evpipe [1]); |
2244 | dup2 (fds [1], evpipe [1]); |
2114 | close (fds [1]); |
2245 | close (fds [1]); |
2115 | } |
2246 | } |
|
|
2247 | |
|
|
2248 | fd_intern (evpipe [1]); |
2116 | |
2249 | |
2117 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
2250 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
2118 | ev_io_start (EV_A_ &pipe_w); |
2251 | ev_io_start (EV_A_ &pipe_w); |
2119 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2252 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2120 | } |
2253 | } |
… | |
… | |
2504 | { |
2637 | { |
2505 | return userdata; |
2638 | return userdata; |
2506 | } |
2639 | } |
2507 | |
2640 | |
2508 | void |
2641 | void |
2509 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
2642 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
2510 | { |
2643 | { |
2511 | invoke_cb = invoke_pending_cb; |
2644 | invoke_cb = invoke_pending_cb; |
2512 | } |
2645 | } |
2513 | |
2646 | |
2514 | void |
2647 | void |