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 |
… | |
… | |
355 | # define EV_USE_4HEAP EV_FEATURE_DATA |
361 | # define EV_USE_4HEAP EV_FEATURE_DATA |
356 | #endif |
362 | #endif |
357 | |
363 | |
358 | #ifndef EV_HEAP_CACHE_AT |
364 | #ifndef EV_HEAP_CACHE_AT |
359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
365 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
366 | #endif |
|
|
367 | |
|
|
368 | #ifdef ANDROID |
|
|
369 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
370 | # undef EV_USE_SELECT |
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|
371 | # define EV_USE_SELECT 0 |
|
|
372 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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|
373 | # undef EV_USE_CLOCK_SYSCALL |
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|
374 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
375 | #endif |
|
|
376 | |
|
|
377 | /* aix's poll.h seems to cause lots of trouble */ |
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|
378 | #ifdef _AIX |
|
|
379 | /* AIX has a completely broken poll.h header */ |
|
|
380 | # undef EV_USE_POLL |
|
|
381 | # define EV_USE_POLL 0 |
360 | #endif |
382 | #endif |
361 | |
383 | |
362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
384 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
363 | /* which makes programs even slower. might work on other unices, too. */ |
385 | /* which makes programs even slower. might work on other unices, too. */ |
364 | #if EV_USE_CLOCK_SYSCALL |
386 | #if EV_USE_CLOCK_SYSCALL |
… | |
… | |
372 | # define EV_USE_CLOCK_SYSCALL 0 |
394 | # define EV_USE_CLOCK_SYSCALL 0 |
373 | # endif |
395 | # endif |
374 | #endif |
396 | #endif |
375 | |
397 | |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
398 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
377 | |
|
|
378 | #ifdef _AIX |
|
|
379 | /* AIX has a completely broken poll.h header */ |
|
|
380 | # undef EV_USE_POLL |
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|
381 | # define EV_USE_POLL 0 |
|
|
382 | #endif |
|
|
383 | |
399 | |
384 | #ifndef CLOCK_MONOTONIC |
400 | #ifndef CLOCK_MONOTONIC |
385 | # undef EV_USE_MONOTONIC |
401 | # undef EV_USE_MONOTONIC |
386 | # define EV_USE_MONOTONIC 0 |
402 | # define EV_USE_MONOTONIC 0 |
387 | #endif |
403 | #endif |
… | |
… | |
475 | /* 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 */ |
476 | /* ECB.H BEGIN */ |
492 | /* ECB.H BEGIN */ |
477 | /* |
493 | /* |
478 | * libecb - http://software.schmorp.de/pkg/libecb |
494 | * libecb - http://software.schmorp.de/pkg/libecb |
479 | * |
495 | * |
480 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
496 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
481 | * Copyright (©) 2011 Emanuele Giaquinta |
497 | * Copyright (©) 2011 Emanuele Giaquinta |
482 | * All rights reserved. |
498 | * All rights reserved. |
483 | * |
499 | * |
484 | * 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- |
485 | * tion, are permitted provided that the following conditions are met: |
501 | * tion, are permitted provided that the following conditions are met: |
… | |
… | |
499 | * 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; |
500 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
516 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
501 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
517 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
502 | * 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 |
503 | * 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 |
|
|
529 | * provisions above, a recipient may use your version of this file under |
|
|
530 | * either the BSD or the GPL. |
504 | */ |
531 | */ |
505 | |
532 | |
506 | #ifndef ECB_H |
533 | #ifndef ECB_H |
507 | #define ECB_H |
534 | #define ECB_H |
508 | |
535 | |
509 | /* 16 bits major, 16 bits minor */ |
536 | /* 16 bits major, 16 bits minor */ |
510 | #define ECB_VERSION 0x00010001 |
537 | #define ECB_VERSION 0x00010004 |
511 | |
538 | |
512 | #ifdef _WIN32 |
539 | #ifdef _WIN32 |
513 | typedef signed char int8_t; |
540 | typedef signed char int8_t; |
514 | typedef unsigned char uint8_t; |
541 | typedef unsigned char uint8_t; |
515 | typedef signed short int16_t; |
542 | typedef signed short int16_t; |
… | |
… | |
530 | #else |
557 | #else |
531 | #define ECB_PTRSIZE 4 |
558 | #define ECB_PTRSIZE 4 |
532 | typedef uint32_t uintptr_t; |
559 | typedef uint32_t uintptr_t; |
533 | typedef int32_t intptr_t; |
560 | typedef int32_t intptr_t; |
534 | #endif |
561 | #endif |
535 | typedef intptr_t ptrdiff_t; |
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|
536 | #else |
562 | #else |
537 | #include <inttypes.h> |
563 | #include <inttypes.h> |
538 | #if UINTMAX_MAX > 0xffffffffU |
564 | #if UINTMAX_MAX > 0xffffffffU |
539 | #define ECB_PTRSIZE 8 |
565 | #define ECB_PTRSIZE 8 |
540 | #else |
566 | #else |
541 | #define ECB_PTRSIZE 4 |
567 | #define ECB_PTRSIZE 4 |
542 | #endif |
568 | #endif |
543 | #endif |
569 | #endif |
544 | |
570 | |
|
|
571 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
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|
572 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
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573 | |
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|
574 | /* work around x32 idiocy by defining proper macros */ |
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|
575 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
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|
576 | #if _ILP32 |
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|
577 | #define ECB_AMD64_X32 1 |
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578 | #else |
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|
579 | #define ECB_AMD64 1 |
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580 | #endif |
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|
581 | #endif |
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582 | |
545 | /* many compilers define _GNUC_ to some versions but then only implement |
583 | /* many compilers define _GNUC_ to some versions but then only implement |
546 | * what their idiot authors think are the "more important" extensions, |
584 | * what their idiot authors think are the "more important" extensions, |
547 | * causing enormous grief in return for some better fake benchmark numbers. |
585 | * causing enormous grief in return for some better fake benchmark numbers. |
548 | * or so. |
586 | * or so. |
549 | * 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 |
550 | * 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. |
551 | */ |
589 | */ |
552 | #ifndef ECB_GCC_VERSION |
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|
553 | #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__ |
554 | #define ECB_GCC_VERSION(major,minor) 0 |
591 | #define ECB_GCC_VERSION(major,minor) 0 |
555 | #else |
592 | #else |
556 | #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))) |
557 | #endif |
594 | #endif |
558 | #endif |
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|
559 | |
595 | |
560 | #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))) |
561 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
597 | |
562 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
598 | #if __clang__ && defined __has_builtin |
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|
599 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
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|
600 | #else |
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|
601 | #define ECB_CLANG_BUILTIN(x) 0 |
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602 | #endif |
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603 | |
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|
604 | #if __clang__ && defined __has_extension |
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|
605 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
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606 | #else |
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|
607 | #define ECB_CLANG_EXTENSION(x) 0 |
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|
608 | #endif |
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|
609 | |
563 | #define ECB_CPP (__cplusplus+0) |
610 | #define ECB_CPP (__cplusplus+0) |
564 | #define ECB_CPP11 (__cplusplus >= 201103L) |
611 | #define ECB_CPP11 (__cplusplus >= 201103L) |
565 | |
612 | |
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|
613 | #if ECB_CPP |
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614 | #define ECB_C 0 |
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|
615 | #define ECB_STDC_VERSION 0 |
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|
616 | #else |
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|
617 | #define ECB_C 1 |
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|
618 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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619 | #endif |
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620 | |
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|
621 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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|
622 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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623 | |
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|
624 | #if ECB_CPP |
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625 | #define ECB_EXTERN_C extern "C" |
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626 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
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|
627 | #define ECB_EXTERN_C_END } |
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628 | #else |
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|
629 | #define ECB_EXTERN_C extern |
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|
630 | #define ECB_EXTERN_C_BEG |
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|
631 | #define ECB_EXTERN_C_END |
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|
632 | #endif |
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|
633 | |
566 | /*****************************************************************************/ |
634 | /*****************************************************************************/ |
567 | |
635 | |
568 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
636 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
569 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
637 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
570 | |
638 | |
… | |
… | |
572 | #define ECB_NO_SMP 1 |
640 | #define ECB_NO_SMP 1 |
573 | #endif |
641 | #endif |
574 | |
642 | |
575 | #if ECB_NO_SMP |
643 | #if ECB_NO_SMP |
576 | #define ECB_MEMORY_FENCE do { } while (0) |
644 | #define ECB_MEMORY_FENCE do { } while (0) |
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645 | #endif |
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646 | |
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647 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
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648 | #if __xlC__ && ECB_CPP |
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649 | #include <builtins.h> |
577 | #endif |
650 | #endif |
578 | |
651 | |
579 | #ifndef ECB_MEMORY_FENCE |
652 | #ifndef ECB_MEMORY_FENCE |
580 | #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 |
581 | #if __i386 || __i386__ |
654 | #if __i386 || __i386__ |
582 | #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") |
583 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
656 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
584 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
657 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
585 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
658 | #elif ECB_GCC_AMD64 |
586 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
659 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
587 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
660 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
588 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
661 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
589 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
662 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
590 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
663 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
… | |
… | |
592 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
665 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
593 | #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") |
594 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
667 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
595 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
668 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
596 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
669 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
597 | #elif __sparc || __sparc__ |
670 | #elif __aarch64__ |
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|
671 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
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|
672 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
598 | #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") |
599 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
674 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
600 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
675 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
601 | #elif defined __s390__ || defined __s390x__ |
676 | #elif defined __s390__ || defined __s390x__ |
602 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
677 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
603 | #elif defined __mips__ |
678 | #elif defined __mips__ |
|
|
679 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
680 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
604 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
681 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
605 | #elif defined __alpha__ |
682 | #elif defined __alpha__ |
606 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
683 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
607 | #elif defined __hppa__ |
684 | #elif defined __hppa__ |
608 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
685 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
609 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
686 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
610 | #elif defined __ia64__ |
687 | #elif defined __ia64__ |
611 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
688 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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|
689 | #elif defined __m68k__ |
|
|
690 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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|
691 | #elif defined __m88k__ |
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|
692 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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|
693 | #elif defined __sh__ |
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|
694 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
612 | #endif |
695 | #endif |
613 | #endif |
696 | #endif |
614 | #endif |
697 | #endif |
615 | |
698 | |
616 | #ifndef ECB_MEMORY_FENCE |
699 | #ifndef ECB_MEMORY_FENCE |
617 | #if ECB_GCC_VERSION(4,7) |
700 | #if ECB_GCC_VERSION(4,7) |
618 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
701 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
619 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
702 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
620 | #elif defined __clang && __has_feature (cxx_atomic) |
703 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
704 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
705 | |
|
|
706 | #elif ECB_CLANG_EXTENSION(c_atomic) |
621 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
707 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
622 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
708 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
709 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
710 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
711 | |
623 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
712 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
624 | #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() |
625 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
720 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
626 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
721 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
627 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
722 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
628 | #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 */ |
629 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
724 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
… | |
… | |
649 | /* 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. */ |
650 | /* 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 */ |
651 | /* for most usages, or gcc and clang have a bug */ |
746 | /* for most usages, or gcc and clang have a bug */ |
652 | /* I *currently* lean towards the latter, and inefficiently implement */ |
747 | /* I *currently* lean towards the latter, and inefficiently implement */ |
653 | /* 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 */ |
654 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
751 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
655 | #endif |
752 | #endif |
656 | #endif |
753 | #endif |
657 | |
754 | |
658 | #ifndef ECB_MEMORY_FENCE |
755 | #ifndef ECB_MEMORY_FENCE |
… | |
… | |
681 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
778 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
682 | #endif |
779 | #endif |
683 | |
780 | |
684 | /*****************************************************************************/ |
781 | /*****************************************************************************/ |
685 | |
782 | |
686 | #if __cplusplus |
783 | #if ECB_CPP |
687 | #define ecb_inline static inline |
784 | #define ecb_inline static inline |
688 | #elif ECB_GCC_VERSION(2,5) |
785 | #elif ECB_GCC_VERSION(2,5) |
689 | #define ecb_inline static __inline__ |
786 | #define ecb_inline static __inline__ |
690 | #elif ECB_C99 |
787 | #elif ECB_C99 |
691 | #define ecb_inline static inline |
788 | #define ecb_inline static inline |
… | |
… | |
705 | |
802 | |
706 | #define ECB_CONCAT_(a, b) a ## b |
803 | #define ECB_CONCAT_(a, b) a ## b |
707 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
804 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
708 | #define ECB_STRINGIFY_(a) # a |
805 | #define ECB_STRINGIFY_(a) # a |
709 | #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)) |
710 | |
808 | |
711 | #define ecb_function_ ecb_inline |
809 | #define ecb_function_ ecb_inline |
712 | |
810 | |
713 | #if ECB_GCC_VERSION(3,1) |
811 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
714 | #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) |
715 | #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) |
716 | #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) |
717 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
834 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
718 | #else |
835 | #else |
719 | #define ecb_attribute(attrlist) |
|
|
720 | #define ecb_is_constant(expr) 0 |
|
|
721 | #define ecb_expect(expr,value) (expr) |
|
|
722 | #define ecb_prefetch(addr,rw,locality) |
836 | #define ecb_prefetch(addr,rw,locality) |
723 | #endif |
837 | #endif |
724 | |
838 | |
725 | /* no emulation for ecb_decltype */ |
839 | /* no emulation for ecb_decltype */ |
726 | #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; }; |
727 | #define ecb_decltype(x) __decltype(x) |
843 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
728 | #elif ECB_GCC_VERSION(3,0) |
844 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
729 | #define ecb_decltype(x) __typeof(x) |
845 | #define ecb_decltype(x) __typeof__ (x) |
730 | #endif |
846 | #endif |
731 | |
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 |
732 | #define ecb_noinline ecb_attribute ((__noinline__)) |
865 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
866 | #endif |
|
|
867 | |
733 | #define ecb_unused ecb_attribute ((__unused__)) |
868 | #define ecb_unused ecb_attribute ((__unused__)) |
734 | #define ecb_const ecb_attribute ((__const__)) |
869 | #define ecb_const ecb_attribute ((__const__)) |
735 | #define ecb_pure ecb_attribute ((__pure__)) |
870 | #define ecb_pure ecb_attribute ((__pure__)) |
736 | |
871 | |
737 | #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 */ |
738 | #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) |
739 | #else |
880 | #else |
740 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
881 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
741 | #endif |
882 | #endif |
742 | |
883 | |
743 | #if ECB_GCC_VERSION(4,3) |
884 | #if ECB_GCC_VERSION(4,3) |
… | |
… | |
758 | /* for compatibility to the rest of the world */ |
899 | /* for compatibility to the rest of the world */ |
759 | #define ecb_likely(expr) ecb_expect_true (expr) |
900 | #define ecb_likely(expr) ecb_expect_true (expr) |
760 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
901 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
761 | |
902 | |
762 | /* count trailing zero bits and count # of one bits */ |
903 | /* count trailing zero bits and count # of one bits */ |
763 | #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)) |
764 | /* 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 */ |
765 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
909 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
766 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
910 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
767 | #define ecb_ctz32(x) __builtin_ctz (x) |
911 | #define ecb_ctz32(x) __builtin_ctz (x) |
768 | #define ecb_ctz64(x) __builtin_ctzll (x) |
912 | #define ecb_ctz64(x) __builtin_ctzll (x) |
769 | #define ecb_popcount32(x) __builtin_popcount (x) |
913 | #define ecb_popcount32(x) __builtin_popcount (x) |
770 | /* no popcountll */ |
914 | /* no popcountll */ |
771 | #else |
915 | #else |
772 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
916 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
773 | ecb_function_ int |
917 | ecb_function_ ecb_const int |
774 | ecb_ctz32 (uint32_t x) |
918 | ecb_ctz32 (uint32_t x) |
775 | { |
919 | { |
776 | int r = 0; |
920 | int r = 0; |
777 | |
921 | |
778 | x &= ~x + 1; /* this isolates the lowest bit */ |
922 | x &= ~x + 1; /* this isolates the lowest bit */ |
… | |
… | |
792 | #endif |
936 | #endif |
793 | |
937 | |
794 | return r; |
938 | return r; |
795 | } |
939 | } |
796 | |
940 | |
797 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
941 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
798 | ecb_function_ int |
942 | ecb_function_ ecb_const int |
799 | ecb_ctz64 (uint64_t x) |
943 | ecb_ctz64 (uint64_t x) |
800 | { |
944 | { |
801 | int shift = x & 0xffffffffU ? 0 : 32; |
945 | int shift = x & 0xffffffffU ? 0 : 32; |
802 | return ecb_ctz32 (x >> shift) + shift; |
946 | return ecb_ctz32 (x >> shift) + shift; |
803 | } |
947 | } |
804 | |
948 | |
805 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
949 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
806 | ecb_function_ int |
950 | ecb_function_ ecb_const int |
807 | ecb_popcount32 (uint32_t x) |
951 | ecb_popcount32 (uint32_t x) |
808 | { |
952 | { |
809 | x -= (x >> 1) & 0x55555555; |
953 | x -= (x >> 1) & 0x55555555; |
810 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
954 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
811 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
955 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
812 | x *= 0x01010101; |
956 | x *= 0x01010101; |
813 | |
957 | |
814 | return x >> 24; |
958 | return x >> 24; |
815 | } |
959 | } |
816 | |
960 | |
817 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
961 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
818 | ecb_function_ int ecb_ld32 (uint32_t x) |
962 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
819 | { |
963 | { |
820 | int r = 0; |
964 | int r = 0; |
821 | |
965 | |
822 | if (x >> 16) { x >>= 16; r += 16; } |
966 | if (x >> 16) { x >>= 16; r += 16; } |
823 | if (x >> 8) { x >>= 8; r += 8; } |
967 | if (x >> 8) { x >>= 8; r += 8; } |
… | |
… | |
826 | if (x >> 1) { r += 1; } |
970 | if (x >> 1) { r += 1; } |
827 | |
971 | |
828 | return r; |
972 | return r; |
829 | } |
973 | } |
830 | |
974 | |
831 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
975 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
832 | ecb_function_ int ecb_ld64 (uint64_t x) |
976 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
833 | { |
977 | { |
834 | int r = 0; |
978 | int r = 0; |
835 | |
979 | |
836 | if (x >> 32) { x >>= 32; r += 32; } |
980 | if (x >> 32) { x >>= 32; r += 32; } |
837 | |
981 | |
838 | return r + ecb_ld32 (x); |
982 | return r + ecb_ld32 (x); |
839 | } |
983 | } |
840 | #endif |
984 | #endif |
841 | |
985 | |
842 | 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); |
843 | 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)); } |
844 | 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); |
845 | 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)); } |
846 | |
990 | |
847 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
991 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
848 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
992 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
849 | { |
993 | { |
850 | return ( (x * 0x0802U & 0x22110U) |
994 | return ( (x * 0x0802U & 0x22110U) |
851 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
995 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
852 | } |
996 | } |
853 | |
997 | |
854 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
998 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
855 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
999 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
856 | { |
1000 | { |
857 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
1001 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
858 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
1002 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
859 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
1003 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
860 | x = ( x >> 8 ) | ( x << 8); |
1004 | x = ( x >> 8 ) | ( x << 8); |
861 | |
1005 | |
862 | return x; |
1006 | return x; |
863 | } |
1007 | } |
864 | |
1008 | |
865 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
1009 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
866 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
1010 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
867 | { |
1011 | { |
868 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
1012 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
869 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
1013 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
870 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
1014 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
871 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
1015 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
… | |
… | |
874 | return x; |
1018 | return x; |
875 | } |
1019 | } |
876 | |
1020 | |
877 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
1021 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
878 | /* so for this version we are lazy */ |
1022 | /* so for this version we are lazy */ |
879 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
1023 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
880 | ecb_function_ int |
1024 | ecb_function_ ecb_const int |
881 | ecb_popcount64 (uint64_t x) |
1025 | ecb_popcount64 (uint64_t x) |
882 | { |
1026 | { |
883 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
1027 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
884 | } |
1028 | } |
885 | |
1029 | |
886 | 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); |
887 | 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); |
888 | 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); |
889 | 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); |
890 | 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); |
891 | 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); |
892 | 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); |
893 | 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); |
894 | |
1038 | |
895 | 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); } |
896 | 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); } |
897 | 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); } |
898 | 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); } |
899 | 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); } |
900 | 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); } |
901 | 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); } |
902 | 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); } |
903 | |
1047 | |
904 | #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 |
905 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
1052 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1053 | #endif |
906 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
1054 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
907 | #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))) |
908 | #else |
1061 | #else |
909 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
1062 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
910 | ecb_function_ uint16_t |
1063 | ecb_function_ ecb_const uint16_t |
911 | ecb_bswap16 (uint16_t x) |
1064 | ecb_bswap16 (uint16_t x) |
912 | { |
1065 | { |
913 | return ecb_rotl16 (x, 8); |
1066 | return ecb_rotl16 (x, 8); |
914 | } |
1067 | } |
915 | |
1068 | |
916 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
1069 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
917 | ecb_function_ uint32_t |
1070 | ecb_function_ ecb_const uint32_t |
918 | ecb_bswap32 (uint32_t x) |
1071 | ecb_bswap32 (uint32_t x) |
919 | { |
1072 | { |
920 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
1073 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
921 | } |
1074 | } |
922 | |
1075 | |
923 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
1076 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
924 | ecb_function_ uint64_t |
1077 | ecb_function_ ecb_const uint64_t |
925 | ecb_bswap64 (uint64_t x) |
1078 | ecb_bswap64 (uint64_t x) |
926 | { |
1079 | { |
927 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
1080 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
928 | } |
1081 | } |
929 | #endif |
1082 | #endif |
930 | |
1083 | |
931 | #if ECB_GCC_VERSION(4,5) |
1084 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
932 | #define ecb_unreachable() __builtin_unreachable () |
1085 | #define ecb_unreachable() __builtin_unreachable () |
933 | #else |
1086 | #else |
934 | /* 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 :/ */ |
935 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
1088 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
936 | ecb_inline void ecb_unreachable (void) { } |
1089 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
937 | #endif |
1090 | #endif |
938 | |
1091 | |
939 | /* try to tell the compiler that some condition is definitely true */ |
1092 | /* try to tell the compiler that some condition is definitely true */ |
940 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
1093 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
941 | |
1094 | |
942 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
1095 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
943 | ecb_inline unsigned char |
1096 | ecb_inline ecb_const unsigned char |
944 | ecb_byteorder_helper (void) |
1097 | ecb_byteorder_helper (void) |
945 | { |
1098 | { |
946 | const uint32_t u = 0x11223344; |
1099 | /* the union code still generates code under pressure in gcc, */ |
947 | return *(unsigned char *)&u; |
1100 | /* but less than using pointers, and always seems to */ |
|
|
1101 | /* successfully return a constant. */ |
|
|
1102 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1103 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1104 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1105 | #if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
1106 | return 0x44; |
|
|
1107 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
1108 | return 0x44; |
|
|
1109 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1110 | return 0x11; |
|
|
1111 | #else |
|
|
1112 | union |
|
|
1113 | { |
|
|
1114 | uint32_t i; |
|
|
1115 | uint8_t c; |
|
|
1116 | } u = { 0x11223344 }; |
|
|
1117 | return u.c; |
|
|
1118 | #endif |
948 | } |
1119 | } |
949 | |
1120 | |
950 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
1121 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
951 | 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; } |
952 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
1123 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
953 | 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; } |
954 | |
1125 | |
955 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
1126 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
956 | #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)) |
957 | #else |
1128 | #else |
958 | #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))) |
959 | #endif |
1130 | #endif |
960 | |
1131 | |
961 | #if __cplusplus |
1132 | #if ECB_CPP |
962 | template<typename T> |
1133 | template<typename T> |
963 | static inline T ecb_div_rd (T val, T div) |
1134 | static inline T ecb_div_rd (T val, T div) |
964 | { |
1135 | { |
965 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
1136 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
966 | } |
1137 | } |
… | |
… | |
981 | { |
1152 | { |
982 | return N; |
1153 | return N; |
983 | } |
1154 | } |
984 | #else |
1155 | #else |
985 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
1156 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1157 | #endif |
|
|
1158 | |
|
|
1159 | /*******************************************************************************/ |
|
|
1160 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1161 | |
|
|
1162 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1163 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1164 | #if 0 \ |
|
|
1165 | || __i386 || __i386__ \ |
|
|
1166 | || ECB_GCC_AMD64 \ |
|
|
1167 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1168 | || defined __s390__ || defined __s390x__ \ |
|
|
1169 | || defined __mips__ \ |
|
|
1170 | || defined __alpha__ \ |
|
|
1171 | || defined __hppa__ \ |
|
|
1172 | || defined __ia64__ \ |
|
|
1173 | || defined __m68k__ \ |
|
|
1174 | || defined __m88k__ \ |
|
|
1175 | || defined __sh__ \ |
|
|
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__ |
|
|
1179 | #define ECB_STDFP 1 |
|
|
1180 | #include <string.h> /* for memcpy */ |
|
|
1181 | #else |
|
|
1182 | #define ECB_STDFP 0 |
|
|
1183 | #endif |
|
|
1184 | |
|
|
1185 | #ifndef ECB_NO_LIBM |
|
|
1186 | |
|
|
1187 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1188 | |
|
|
1189 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1190 | #ifdef INFINITY |
|
|
1191 | #define ECB_INFINITY INFINITY |
|
|
1192 | #else |
|
|
1193 | #define ECB_INFINITY HUGE_VAL |
|
|
1194 | #endif |
|
|
1195 | |
|
|
1196 | #ifdef NAN |
|
|
1197 | #define ECB_NAN NAN |
|
|
1198 | #else |
|
|
1199 | #define ECB_NAN ECB_INFINITY |
|
|
1200 | #endif |
|
|
1201 | |
|
|
1202 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1203 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1204 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1205 | #else |
|
|
1206 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1207 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1208 | #endif |
|
|
1209 | |
|
|
1210 | /* converts an ieee half/binary16 to a float */ |
|
|
1211 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1212 | ecb_function_ ecb_const float |
|
|
1213 | ecb_binary16_to_float (uint16_t x) |
|
|
1214 | { |
|
|
1215 | int e = (x >> 10) & 0x1f; |
|
|
1216 | int m = x & 0x3ff; |
|
|
1217 | float r; |
|
|
1218 | |
|
|
1219 | if (!e ) r = ecb_ldexpf (m , -24); |
|
|
1220 | else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25); |
|
|
1221 | else if (m ) r = ECB_NAN; |
|
|
1222 | else r = ECB_INFINITY; |
|
|
1223 | |
|
|
1224 | return x & 0x8000 ? -r : r; |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | /* convert a float to ieee single/binary32 */ |
|
|
1228 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1229 | ecb_function_ ecb_const uint32_t |
|
|
1230 | ecb_float_to_binary32 (float x) |
|
|
1231 | { |
|
|
1232 | uint32_t r; |
|
|
1233 | |
|
|
1234 | #if ECB_STDFP |
|
|
1235 | memcpy (&r, &x, 4); |
|
|
1236 | #else |
|
|
1237 | /* slow emulation, works for anything but -0 */ |
|
|
1238 | uint32_t m; |
|
|
1239 | int e; |
|
|
1240 | |
|
|
1241 | if (x == 0e0f ) return 0x00000000U; |
|
|
1242 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1243 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1244 | if (x != x ) return 0x7fbfffffU; |
|
|
1245 | |
|
|
1246 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1247 | |
|
|
1248 | r = m & 0x80000000U; |
|
|
1249 | |
|
|
1250 | if (r) |
|
|
1251 | m = -m; |
|
|
1252 | |
|
|
1253 | if (e <= -126) |
|
|
1254 | { |
|
|
1255 | m &= 0xffffffU; |
|
|
1256 | m >>= (-125 - e); |
|
|
1257 | e = -126; |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | r |= (e + 126) << 23; |
|
|
1261 | r |= m & 0x7fffffU; |
|
|
1262 | #endif |
|
|
1263 | |
|
|
1264 | return r; |
|
|
1265 | } |
|
|
1266 | |
|
|
1267 | /* converts an ieee single/binary32 to a float */ |
|
|
1268 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1269 | ecb_function_ ecb_const float |
|
|
1270 | ecb_binary32_to_float (uint32_t x) |
|
|
1271 | { |
|
|
1272 | float r; |
|
|
1273 | |
|
|
1274 | #if ECB_STDFP |
|
|
1275 | memcpy (&r, &x, 4); |
|
|
1276 | #else |
|
|
1277 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1278 | int neg = x >> 31; |
|
|
1279 | int e = (x >> 23) & 0xffU; |
|
|
1280 | |
|
|
1281 | x &= 0x7fffffU; |
|
|
1282 | |
|
|
1283 | if (e) |
|
|
1284 | x |= 0x800000U; |
|
|
1285 | else |
|
|
1286 | e = 1; |
|
|
1287 | |
|
|
1288 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1289 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1290 | |
|
|
1291 | r = neg ? -r : r; |
|
|
1292 | #endif |
|
|
1293 | |
|
|
1294 | return r; |
|
|
1295 | } |
|
|
1296 | |
|
|
1297 | /* convert a double to ieee double/binary64 */ |
|
|
1298 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1299 | ecb_function_ ecb_const uint64_t |
|
|
1300 | ecb_double_to_binary64 (double x) |
|
|
1301 | { |
|
|
1302 | uint64_t r; |
|
|
1303 | |
|
|
1304 | #if ECB_STDFP |
|
|
1305 | memcpy (&r, &x, 8); |
|
|
1306 | #else |
|
|
1307 | /* slow emulation, works for anything but -0 */ |
|
|
1308 | uint64_t m; |
|
|
1309 | int e; |
|
|
1310 | |
|
|
1311 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1312 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1313 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1314 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1315 | |
|
|
1316 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1317 | |
|
|
1318 | r = m & 0x8000000000000000;; |
|
|
1319 | |
|
|
1320 | if (r) |
|
|
1321 | m = -m; |
|
|
1322 | |
|
|
1323 | if (e <= -1022) |
|
|
1324 | { |
|
|
1325 | m &= 0x1fffffffffffffU; |
|
|
1326 | m >>= (-1021 - e); |
|
|
1327 | e = -1022; |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1331 | r |= m & 0xfffffffffffffU; |
|
|
1332 | #endif |
|
|
1333 | |
|
|
1334 | return r; |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | /* converts an ieee double/binary64 to a double */ |
|
|
1338 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1339 | ecb_function_ ecb_const double |
|
|
1340 | ecb_binary64_to_double (uint64_t x) |
|
|
1341 | { |
|
|
1342 | double r; |
|
|
1343 | |
|
|
1344 | #if ECB_STDFP |
|
|
1345 | memcpy (&r, &x, 8); |
|
|
1346 | #else |
|
|
1347 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1348 | int neg = x >> 63; |
|
|
1349 | int e = (x >> 52) & 0x7ffU; |
|
|
1350 | |
|
|
1351 | x &= 0xfffffffffffffU; |
|
|
1352 | |
|
|
1353 | if (e) |
|
|
1354 | x |= 0x10000000000000U; |
|
|
1355 | else |
|
|
1356 | e = 1; |
|
|
1357 | |
|
|
1358 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1359 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1360 | |
|
|
1361 | r = neg ? -r : r; |
|
|
1362 | #endif |
|
|
1363 | |
|
|
1364 | return r; |
|
|
1365 | } |
|
|
1366 | |
986 | #endif |
1367 | #endif |
987 | |
1368 | |
988 | #endif |
1369 | #endif |
989 | |
1370 | |
990 | /* ECB.H END */ |
1371 | /* ECB.H END */ |
… | |
… | |
1867 | static void noinline ecb_cold |
2248 | static void noinline ecb_cold |
1868 | evpipe_init (EV_P) |
2249 | evpipe_init (EV_P) |
1869 | { |
2250 | { |
1870 | if (!ev_is_active (&pipe_w)) |
2251 | if (!ev_is_active (&pipe_w)) |
1871 | { |
2252 | { |
|
|
2253 | int fds [2]; |
|
|
2254 | |
1872 | # if EV_USE_EVENTFD |
2255 | # if EV_USE_EVENTFD |
|
|
2256 | fds [0] = -1; |
1873 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
2257 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1874 | if (evfd < 0 && errno == EINVAL) |
2258 | if (fds [1] < 0 && errno == EINVAL) |
1875 | evfd = eventfd (0, 0); |
2259 | fds [1] = eventfd (0, 0); |
1876 | |
2260 | |
1877 | if (evfd >= 0) |
2261 | if (fds [1] < 0) |
1878 | { |
|
|
1879 | evpipe [0] = -1; |
|
|
1880 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1881 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1882 | } |
|
|
1883 | else |
|
|
1884 | # endif |
2262 | # endif |
1885 | { |
2263 | { |
1886 | while (pipe (evpipe)) |
2264 | while (pipe (fds)) |
1887 | ev_syserr ("(libev) error creating signal/async pipe"); |
2265 | ev_syserr ("(libev) error creating signal/async pipe"); |
1888 | |
2266 | |
1889 | fd_intern (evpipe [0]); |
2267 | fd_intern (fds [0]); |
1890 | fd_intern (evpipe [1]); |
|
|
1891 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1892 | } |
2268 | } |
1893 | |
2269 | |
|
|
2270 | evpipe [0] = fds [0]; |
|
|
2271 | |
|
|
2272 | if (evpipe [1] < 0) |
|
|
2273 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2274 | else |
|
|
2275 | { |
|
|
2276 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2277 | /* so that evpipe_write can always rely on its value. */ |
|
|
2278 | /* this branch does not do anything sensible on windows, */ |
|
|
2279 | /* so must not be executed on windows */ |
|
|
2280 | |
|
|
2281 | dup2 (fds [1], evpipe [1]); |
|
|
2282 | close (fds [1]); |
|
|
2283 | } |
|
|
2284 | |
|
|
2285 | fd_intern (evpipe [1]); |
|
|
2286 | |
|
|
2287 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
1894 | ev_io_start (EV_A_ &pipe_w); |
2288 | ev_io_start (EV_A_ &pipe_w); |
1895 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
2289 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1896 | } |
2290 | } |
1897 | } |
2291 | } |
1898 | |
2292 | |
… | |
… | |
1919 | ECB_MEMORY_FENCE_RELEASE; |
2313 | ECB_MEMORY_FENCE_RELEASE; |
1920 | |
2314 | |
1921 | old_errno = errno; /* save errno because write will clobber it */ |
2315 | old_errno = errno; /* save errno because write will clobber it */ |
1922 | |
2316 | |
1923 | #if EV_USE_EVENTFD |
2317 | #if EV_USE_EVENTFD |
1924 | if (evfd >= 0) |
2318 | if (evpipe [0] < 0) |
1925 | { |
2319 | { |
1926 | uint64_t counter = 1; |
2320 | uint64_t counter = 1; |
1927 | write (evfd, &counter, sizeof (uint64_t)); |
2321 | write (evpipe [1], &counter, sizeof (uint64_t)); |
1928 | } |
2322 | } |
1929 | else |
2323 | else |
1930 | #endif |
2324 | #endif |
1931 | { |
2325 | { |
1932 | #ifdef _WIN32 |
2326 | #ifdef _WIN32 |
… | |
… | |
1952 | int i; |
2346 | int i; |
1953 | |
2347 | |
1954 | if (revents & EV_READ) |
2348 | if (revents & EV_READ) |
1955 | { |
2349 | { |
1956 | #if EV_USE_EVENTFD |
2350 | #if EV_USE_EVENTFD |
1957 | if (evfd >= 0) |
2351 | if (evpipe [0] < 0) |
1958 | { |
2352 | { |
1959 | uint64_t counter; |
2353 | uint64_t counter; |
1960 | read (evfd, &counter, sizeof (uint64_t)); |
2354 | read (evpipe [1], &counter, sizeof (uint64_t)); |
1961 | } |
2355 | } |
1962 | else |
2356 | else |
1963 | #endif |
2357 | #endif |
1964 | { |
2358 | { |
1965 | char dummy[4]; |
2359 | char dummy[4]; |
… | |
… | |
2015 | |
2409 | |
2016 | void |
2410 | void |
2017 | ev_feed_signal (int signum) EV_THROW |
2411 | ev_feed_signal (int signum) EV_THROW |
2018 | { |
2412 | { |
2019 | #if EV_MULTIPLICITY |
2413 | #if EV_MULTIPLICITY |
|
|
2414 | EV_P; |
|
|
2415 | ECB_MEMORY_FENCE_ACQUIRE; |
2020 | EV_P = signals [signum - 1].loop; |
2416 | EV_A = signals [signum - 1].loop; |
2021 | |
2417 | |
2022 | if (!EV_A) |
2418 | if (!EV_A) |
2023 | return; |
2419 | return; |
2024 | #endif |
2420 | #endif |
2025 | |
|
|
2026 | if (!ev_active (&pipe_w)) |
|
|
2027 | return; |
|
|
2028 | |
2421 | |
2029 | signals [signum - 1].pending = 1; |
2422 | signals [signum - 1].pending = 1; |
2030 | evpipe_write (EV_A_ &sig_pending); |
2423 | evpipe_write (EV_A_ &sig_pending); |
2031 | } |
2424 | } |
2032 | |
2425 | |
… | |
… | |
2281 | { |
2674 | { |
2282 | return userdata; |
2675 | return userdata; |
2283 | } |
2676 | } |
2284 | |
2677 | |
2285 | void |
2678 | void |
2286 | 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 |
2287 | { |
2680 | { |
2288 | invoke_cb = invoke_pending_cb; |
2681 | invoke_cb = invoke_pending_cb; |
2289 | } |
2682 | } |
2290 | |
2683 | |
2291 | void |
2684 | void |
… | |
… | |
2351 | #if EV_ASYNC_ENABLE |
2744 | #if EV_ASYNC_ENABLE |
2352 | async_pending = 0; |
2745 | async_pending = 0; |
2353 | #endif |
2746 | #endif |
2354 | pipe_write_skipped = 0; |
2747 | pipe_write_skipped = 0; |
2355 | pipe_write_wanted = 0; |
2748 | pipe_write_wanted = 0; |
|
|
2749 | evpipe [0] = -1; |
|
|
2750 | evpipe [1] = -1; |
2356 | #if EV_USE_INOTIFY |
2751 | #if EV_USE_INOTIFY |
2357 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2752 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2358 | #endif |
2753 | #endif |
2359 | #if EV_USE_SIGNALFD |
2754 | #if EV_USE_SIGNALFD |
2360 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2755 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
… | |
… | |
2423 | if (ev_is_active (&pipe_w)) |
2818 | if (ev_is_active (&pipe_w)) |
2424 | { |
2819 | { |
2425 | /*ev_ref (EV_A);*/ |
2820 | /*ev_ref (EV_A);*/ |
2426 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2821 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
2427 | |
2822 | |
2428 | #if EV_USE_EVENTFD |
|
|
2429 | if (evfd >= 0) |
|
|
2430 | close (evfd); |
|
|
2431 | #endif |
|
|
2432 | |
|
|
2433 | if (evpipe [0] >= 0) |
|
|
2434 | { |
|
|
2435 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2823 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
2436 | EV_WIN32_CLOSE_FD (evpipe [1]); |
2824 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
2437 | } |
|
|
2438 | } |
2825 | } |
2439 | |
2826 | |
2440 | #if EV_USE_SIGNALFD |
2827 | #if EV_USE_SIGNALFD |
2441 | if (ev_is_active (&sigfd_w)) |
2828 | if (ev_is_active (&sigfd_w)) |
2442 | close (sigfd); |
2829 | close (sigfd); |
… | |
… | |
2528 | #endif |
2915 | #endif |
2529 | #if EV_USE_INOTIFY |
2916 | #if EV_USE_INOTIFY |
2530 | infy_fork (EV_A); |
2917 | infy_fork (EV_A); |
2531 | #endif |
2918 | #endif |
2532 | |
2919 | |
|
|
2920 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
2533 | if (ev_is_active (&pipe_w)) |
2921 | if (ev_is_active (&pipe_w)) |
2534 | { |
2922 | { |
2535 | /* 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 */ |
2536 | |
2924 | |
2537 | ev_ref (EV_A); |
2925 | ev_ref (EV_A); |
2538 | ev_io_stop (EV_A_ &pipe_w); |
2926 | ev_io_stop (EV_A_ &pipe_w); |
2539 | |
2927 | |
2540 | #if EV_USE_EVENTFD |
|
|
2541 | if (evfd >= 0) |
|
|
2542 | close (evfd); |
|
|
2543 | #endif |
|
|
2544 | |
|
|
2545 | if (evpipe [0] >= 0) |
2928 | if (evpipe [0] >= 0) |
2546 | { |
|
|
2547 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2929 | EV_WIN32_CLOSE_FD (evpipe [0]); |
2548 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2549 | } |
|
|
2550 | |
2930 | |
2551 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2552 | evpipe_init (EV_A); |
2931 | evpipe_init (EV_A); |
2553 | /* iterate over everything, in case we missed something before */ |
2932 | /* iterate over everything, in case we missed something before */ |
2554 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2933 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
2555 | #endif |
|
|
2556 | } |
2934 | } |
|
|
2935 | #endif |
2557 | |
2936 | |
2558 | postfork = 0; |
2937 | postfork = 0; |
2559 | } |
2938 | } |
2560 | |
2939 | |
2561 | #if EV_MULTIPLICITY |
2940 | #if EV_MULTIPLICITY |
… | |
… | |
3530 | #if EV_MULTIPLICITY |
3909 | #if EV_MULTIPLICITY |
3531 | assert (("libev: a signal must not be attached to two different loops", |
3910 | assert (("libev: a signal must not be attached to two different loops", |
3532 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3911 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
3533 | |
3912 | |
3534 | signals [w->signum - 1].loop = EV_A; |
3913 | signals [w->signum - 1].loop = EV_A; |
|
|
3914 | ECB_MEMORY_FENCE_RELEASE; |
3535 | #endif |
3915 | #endif |
3536 | |
3916 | |
3537 | EV_FREQUENT_CHECK; |
3917 | EV_FREQUENT_CHECK; |
3538 | |
3918 | |
3539 | #if EV_USE_SIGNALFD |
3919 | #if EV_USE_SIGNALFD |
… | |
… | |
3694 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
4074 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
3695 | |
4075 | |
3696 | static void noinline |
4076 | static void noinline |
3697 | infy_add (EV_P_ ev_stat *w) |
4077 | infy_add (EV_P_ ev_stat *w) |
3698 | { |
4078 | { |
3699 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
4079 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4080 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4081 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4082 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
3700 | |
4083 | |
3701 | if (w->wd >= 0) |
4084 | if (w->wd >= 0) |
3702 | { |
4085 | { |
3703 | struct statfs sfs; |
4086 | struct statfs sfs; |
3704 | |
4087 | |
… | |
… | |
3708 | |
4091 | |
3709 | if (!fs_2625) |
4092 | if (!fs_2625) |
3710 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
4093 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
3711 | else if (!statfs (w->path, &sfs) |
4094 | else if (!statfs (w->path, &sfs) |
3712 | && (sfs.f_type == 0x1373 /* devfs */ |
4095 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4096 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4097 | || sfs.f_type == 0x4d44 /* msdos */ |
3713 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
4098 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4099 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4100 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4101 | || sfs.f_type == 0x5346544e /* ntfs */ |
3714 | || sfs.f_type == 0x3153464a /* jfs */ |
4102 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4103 | || sfs.f_type == 0x9123683e /* btrfs */ |
3715 | || sfs.f_type == 0x52654973 /* reiser3 */ |
4104 | || sfs.f_type == 0x52654973 /* reiser3 */ |
3716 | || sfs.f_type == 0x01021994 /* tempfs */ |
4105 | || sfs.f_type == 0x01021994 /* tmpfs */ |
3717 | || sfs.f_type == 0x58465342 /* xfs */)) |
4106 | || sfs.f_type == 0x58465342 /* xfs */)) |
3718 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
4107 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
3719 | else |
4108 | else |
3720 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
4109 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
3721 | } |
4110 | } |