ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.447 by root, Tue Jun 19 12:29:43 2012 UTC vs.
Revision 1.483 by root, Tue Jul 31 04:45:58 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
208# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
210# endif 220# endif
211# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
212#endif 222#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 223
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
223 225
224/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 227#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 243#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 245#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 247#else
246# error "unable to find value for NSIG, please report" 248# 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 249#endif
251 250
252#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
254#endif 253#endif
255 254
256#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 258# else
260# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
261# endif 269# endif
262#endif 270#endif
263 271
264#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 363# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 364#endif
357 365
358#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
360#endif 384#endif
361 385
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* 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. */ 387/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
… …
372# define EV_USE_CLOCK_SYSCALL 0 396# define EV_USE_CLOCK_SYSCALL 0
373# endif 397# endif
374#endif 398#endif
375 399
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* 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
381# define EV_USE_POLL 0
382#endif
383 401
384#ifndef CLOCK_MONOTONIC 402#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
387#endif 405#endif
… …
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
477/* 495/*
478 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
479 * 497 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 500 * All rights reserved.
483 * 501 *
484 * Redistribution and use in source and binary forms, with or without modifica- 502 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * 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 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
504 */ 533 */
505 534
506#ifndef ECB_H 535#ifndef ECB_H
507#define ECB_H 536#define ECB_H
508 537
509/* 16 bits major, 16 bits minor */ 538/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 539#define ECB_VERSION 0x00010005
511 540
512#ifdef _WIN32 541#ifdef _WIN32
513 typedef signed char int8_t; 542 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
530 #else 559 #else
531 #define ECB_PTRSIZE 4 560 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 561 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 562 typedef int32_t intptr_t;
534 #endif 563 #endif
535 typedef intptr_t ptrdiff_t;
536#else 564#else
537 #include <inttypes.h> 565 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 567 #define ECB_PTRSIZE 8
540 #else 568 #else
541 #define ECB_PTRSIZE 4 569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
542 #endif 582 #endif
543#endif 583#endif
544 584
545/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 588 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have 589 * 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. 590 * an issue with that they should have done it right in the first place.
551 */ 591 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
555 #else 594#else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
557 #endif 596#endif
558#endif
559 597
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 599
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
563#define ECB_CPP (__cplusplus+0) 612#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L) 613#define ECB_CPP11 (__cplusplus >= 201103L)
565 614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
634#endif
635
566/*****************************************************************************/ 636/*****************************************************************************/
567 637
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* 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 */ 639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570 640
… …
572 #define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
573#endif 643#endif
574 644
575#if ECB_NO_SMP 645#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
577#endif 656#endif
578 657
579#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__ 660 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #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__ \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__ 690 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__ 692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* 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") 695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
605 #elif defined __alpha__ 696 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__ 698 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__ 701 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
612 #endif 709 #endif
613 #endif 710 #endif
614#endif 711#endif
615 712
616#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7) 714 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */ 715 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic) 717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */ 721 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
649 /* any fence other than seq_cst, which isn't very efficient for us. */ 758 /* 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 */ 759 /* 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 */ 760 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */ 761 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */ 762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif 766 #endif
656#endif 767#endif
657 768
658#ifndef ECB_MEMORY_FENCE 769#ifndef ECB_MEMORY_FENCE
… …
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif 793#endif
683 794
684/*****************************************************************************/ 795/*****************************************************************************/
685 796
686#if __cplusplus 797#if ECB_CPP
687 #define ecb_inline static inline 798 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
690#elif ECB_C99 801#elif ECB_C99
691 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
705 816
706#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
710 822
711#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
712 824
713#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
714 #define ecb_attribute(attrlist) __attribute__(attrlist) 826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr) 832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
843#else
844 #define ecb_expect(expr,value) (expr)
845#endif
846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else 849#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) 850 #define ecb_prefetch(addr,rw,locality)
723#endif 851#endif
724 852
725/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5) 854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
727 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
729 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
730#endif 860#endif
731 861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
732#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
880#endif
881
733#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
736 885
737#if ECB_C11 886#if ECB_C11 || __IBMC_NORETURN
887 /* 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 888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
739#else 894#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__)) 895 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif 896#endif
742 897
743#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
… …
758/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
761 916
762/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4) 918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */ 928 /* no popcountll */
771#else 929#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773 ecb_function_ int 931 ecb_function_ ecb_const int
774 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
775 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
776 int r = 0; 939 int r = 0;
777 940
778 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
779 942
780#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
790 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
792#endif 955#endif
793 956
794 return r; 957 return r;
958#endif
795 } 959 }
796 960
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798 ecb_function_ int 962 ecb_function_ ecb_const int
799 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
800 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
801 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
803 } 973 }
804 974
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806 ecb_function_ int 976 ecb_function_ ecb_const int
807 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
808 { 978 {
809 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101; 982 x *= 0x01010101;
813 983
814 return x >> 24; 984 return x >> 24;
815 } 985 }
816 986
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
820 int r = 0; 995 int r = 0;
821 996
822 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
827 1002
828 return r; 1003 return r;
1004#endif
829 } 1005 }
830 1006
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
834 int r = 0; 1015 int r = 0;
835 1016
836 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
837 1018
838 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
839 } 1021 }
840#endif 1022#endif
841 1023
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846 1028
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849{ 1031{
850 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852} 1034}
853 1035
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856{ 1038{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
861 1043
862 return x; 1044 return x;
863} 1045}
864 1046
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867{ 1049{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
874 return x; 1056 return x;
875} 1057}
876 1058
877/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */ 1060/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880ecb_function_ int 1062ecb_function_ ecb_const int
881ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
882{ 1064{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884} 1066}
885 1067
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
894 1076
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903 1085
904#if ECB_GCC_VERSION(4,3) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
906 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
908#else 1099#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
911 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
912 { 1103 {
913 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
914 } 1105 }
915 1106
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
918 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
919 { 1110 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 } 1112 }
922 1113
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
925 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
926 { 1117 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 } 1119 }
929#endif 1120#endif
930 1121
931#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
932 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
933#else 1124#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
936 ecb_inline void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937#endif 1128#endif
938 1129
939/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941 1132
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
943ecb_inline unsigned char 1134ecb_inline ecb_const uint32_t
944ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
945{ 1136{
946 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
947 return *(unsigned char *)&u; 1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
948} 1159}
949 1160
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
954 1165
955#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else 1168#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif 1170#endif
960 1171
961#if __cplusplus 1172#if ECB_CPP
962 template<typename T> 1173 template<typename T>
963 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
964 { 1175 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 } 1177 }
… …
983 } 1194 }
984#else 1195#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif 1197#endif
987 1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
988#endif 1504#endif
989 1505
990/* ECB.H END */ 1506/* ECB.H END */
991 1507
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
1013#define inline_size ecb_inline 1529#define inline_size ecb_inline
1014 1530
1015#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
1017#else 1533#else
1018# define inline_speed static noinline 1534# define inline_speed noinline static
1019#endif 1535#endif
1020 1536
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022 1538
1023#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
1070#else 1586#else
1071 1587
1072#include <float.h> 1588#include <float.h>
1073 1589
1074/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1075static ev_tstamp noinline 1592static ev_tstamp
1076ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1077{ 1594{
1078 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1112 1629
1113#ifdef __linux 1630#ifdef __linux
1114# include <sys/utsname.h> 1631# include <sys/utsname.h>
1115#endif 1632#endif
1116 1633
1117static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1118ev_linux_version (void) 1636ev_linux_version (void)
1119{ 1637{
1120#ifdef __linux 1638#ifdef __linux
1121 unsigned int v = 0; 1639 unsigned int v = 0;
1122 struct utsname buf; 1640 struct utsname buf;
… …
1151} 1669}
1152 1670
1153/*****************************************************************************/ 1671/*****************************************************************************/
1154 1672
1155#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1157ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1158{ 1677{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1160} 1679}
1161#endif 1680#endif
1162 1681
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1164 1683
1165void ecb_cold 1684ecb_cold
1685void
1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1167{ 1687{
1168 syserr_cb = cb; 1688 syserr_cb = cb;
1169} 1689}
1170 1690
1171static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1172ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1173{ 1694{
1174 if (!msg) 1695 if (!msg)
1175 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1176 1697
… …
1207 return 0; 1728 return 0;
1208} 1729}
1209 1730
1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1211 1732
1212void ecb_cold 1733ecb_cold
1734void
1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1214{ 1736{
1215 alloc = cb; 1737 alloc = cb;
1216} 1738}
1217 1739
… …
1386 struct timespec ts; 1908 struct timespec ts;
1387 1909
1388 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1389 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1390#elif defined _WIN32 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1391 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1392#else 1916#else
1393 struct timeval tv; 1917 struct timeval tv;
1394 1918
1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1426 } 1950 }
1427 1951
1428 return ncur; 1952 return ncur;
1429} 1953}
1430 1954
1431static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1432array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1433{ 1958{
1434 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1435 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1436} 1961}
… …
1439 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1440 1965
1441#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1442 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1443 { \ 1968 { \
1444 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1445 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1446 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1447 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1448 } 1973 }
1449 1974
… …
1461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1462 1987
1463/*****************************************************************************/ 1988/*****************************************************************************/
1464 1989
1465/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1466static void noinline 1991noinline
1992static void
1467pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1468{ 1994{
1469} 1995}
1470 1996
1471void noinline 1997noinline
1998void
1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1473{ 2000{
1474 W w_ = (W)w; 2001 W w_ = (W)w;
1475 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1476 2003
… …
1606 2133
1607 fdchangecnt = 0; 2134 fdchangecnt = 0;
1608} 2135}
1609 2136
1610/* something about the given fd changed */ 2137/* something about the given fd changed */
1611inline_size void 2138inline_size
2139void
1612fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1613{ 2141{
1614 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1615 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1616 2144
… …
1621 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1622 } 2150 }
1623} 2151}
1624 2152
1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1626inline_speed void ecb_cold 2154inline_speed ecb_cold void
1627fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1628{ 2156{
1629 ev_io *w; 2157 ev_io *w;
1630 2158
1631 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1635 } 2163 }
1636} 2164}
1637 2165
1638/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1639inline_size int ecb_cold 2167inline_size ecb_cold int
1640fd_valid (int fd) 2168fd_valid (int fd)
1641{ 2169{
1642#ifdef _WIN32 2170#ifdef _WIN32
1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1644#else 2172#else
1645 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1646#endif 2174#endif
1647} 2175}
1648 2176
1649/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1650static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1651fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1652{ 2181{
1653 int fd; 2182 int fd;
1654 2183
1655 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1657 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1658 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1659} 2188}
1660 2189
1661/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1662static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1663fd_enomem (EV_P) 2193fd_enomem (EV_P)
1664{ 2194{
1665 int fd; 2195 int fd;
1666 2196
1667 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1671 break; 2201 break;
1672 } 2202 }
1673} 2203}
1674 2204
1675/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1676static void noinline 2206noinline
2207static void
1677fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1678{ 2209{
1679 int fd; 2210 int fd;
1680 2211
1681 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1862 2393
1863/*****************************************************************************/ 2394/*****************************************************************************/
1864 2395
1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1866 2397
1867static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1868evpipe_init (EV_P) 2400evpipe_init (EV_P)
1869{ 2401{
1870 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1871 { 2403 {
2404 int fds [2];
2405
1872# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1873 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1874 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1875 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1876 2411
1877 if (evfd >= 0) 2412 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 2413# endif
1885 { 2414 {
1886 while (pipe (evpipe)) 2415 while (pipe (fds))
1887 ev_syserr ("(libev) error creating signal/async pipe"); 2416 ev_syserr ("(libev) error creating signal/async pipe");
1888 2417
1889 fd_intern (evpipe [0]); 2418 fd_intern (fds [0]);
1890 fd_intern (evpipe [1]);
1891 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1892 } 2419 }
1893 2420
2421 evpipe [0] = fds [0];
2422
2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1894 ev_io_start (EV_A_ &pipe_w); 2439 ev_io_start (EV_A_ &pipe_w);
1895 ev_unref (EV_A); /* watcher should not keep loop alive */ 2440 ev_unref (EV_A); /* watcher should not keep loop alive */
1896 } 2441 }
1897} 2442}
1898 2443
… …
1919 ECB_MEMORY_FENCE_RELEASE; 2464 ECB_MEMORY_FENCE_RELEASE;
1920 2465
1921 old_errno = errno; /* save errno because write will clobber it */ 2466 old_errno = errno; /* save errno because write will clobber it */
1922 2467
1923#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1924 if (evfd >= 0) 2469 if (evpipe [0] < 0)
1925 { 2470 {
1926 uint64_t counter = 1; 2471 uint64_t counter = 1;
1927 write (evfd, &counter, sizeof (uint64_t)); 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1928 } 2473 }
1929 else 2474 else
1930#endif 2475#endif
1931 { 2476 {
1932#ifdef _WIN32 2477#ifdef _WIN32
… …
1952 int i; 2497 int i;
1953 2498
1954 if (revents & EV_READ) 2499 if (revents & EV_READ)
1955 { 2500 {
1956#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1957 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1958 { 2503 {
1959 uint64_t counter; 2504 uint64_t counter;
1960 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1961 } 2506 }
1962 else 2507 else
1963#endif 2508#endif
1964 { 2509 {
1965 char dummy[4]; 2510 char dummy[4];
… …
2015 2560
2016void 2561void
2017ev_feed_signal (int signum) EV_THROW 2562ev_feed_signal (int signum) EV_THROW
2018{ 2563{
2019#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
2020 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
2021 2568
2022 if (!EV_A) 2569 if (!EV_A)
2023 return; 2570 return;
2024#endif 2571#endif
2025 2572
2026 if (!ev_active (&pipe_w))
2027 return;
2028
2029 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
2030 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
2031} 2575}
2032 2576
2033static void 2577static void
… …
2038#endif 2582#endif
2039 2583
2040 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
2041} 2585}
2042 2586
2043void noinline 2587noinline
2588void
2044ev_feed_signal_event (EV_P_ int signum) EV_THROW 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
2045{ 2590{
2046 WL w; 2591 WL w;
2047 2592
2048 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
… …
2165#endif 2710#endif
2166#if EV_USE_SELECT 2711#if EV_USE_SELECT
2167# include "ev_select.c" 2712# include "ev_select.c"
2168#endif 2713#endif
2169 2714
2170int ecb_cold 2715ecb_cold int
2171ev_version_major (void) EV_THROW 2716ev_version_major (void) EV_THROW
2172{ 2717{
2173 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2174} 2719}
2175 2720
2176int ecb_cold 2721ecb_cold int
2177ev_version_minor (void) EV_THROW 2722ev_version_minor (void) EV_THROW
2178{ 2723{
2179 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2180} 2725}
2181 2726
2182/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2183int inline_size ecb_cold 2728inline_size ecb_cold int
2184enable_secure (void) 2729enable_secure (void)
2185{ 2730{
2186#ifdef _WIN32 2731#ifdef _WIN32
2187 return 0; 2732 return 0;
2188#else 2733#else
2189 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2190 || getgid () != getegid (); 2735 || getgid () != getegid ();
2191#endif 2736#endif
2192} 2737}
2193 2738
2194unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2195ev_supported_backends (void) EV_THROW 2741ev_supported_backends (void) EV_THROW
2196{ 2742{
2197 unsigned int flags = 0; 2743 unsigned int flags = 0;
2198 2744
2199 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2203 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2204 2750
2205 return flags; 2751 return flags;
2206} 2752}
2207 2753
2208unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2209ev_recommended_backends (void) EV_THROW 2756ev_recommended_backends (void) EV_THROW
2210{ 2757{
2211 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2212 2759
2213#ifndef __NetBSD__ 2760#ifndef __NetBSD__
… …
2225#endif 2772#endif
2226 2773
2227 return flags; 2774 return flags;
2228} 2775}
2229 2776
2230unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2231ev_embeddable_backends (void) EV_THROW 2779ev_embeddable_backends (void) EV_THROW
2232{ 2780{
2233 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2234 2782
2235 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2281{ 2829{
2282 return userdata; 2830 return userdata;
2283} 2831}
2284 2832
2285void 2833void
2286ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2287{ 2835{
2288 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2289} 2837}
2290 2838
2291void 2839void
… …
2295 acquire_cb = acquire; 2843 acquire_cb = acquire;
2296} 2844}
2297#endif 2845#endif
2298 2846
2299/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2300static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2301loop_init (EV_P_ unsigned int flags) EV_THROW 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2302{ 2851{
2303 if (!backend) 2852 if (!backend)
2304 { 2853 {
2305 origflags = flags; 2854 origflags = flags;
… …
2351#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2352 async_pending = 0; 2901 async_pending = 0;
2353#endif 2902#endif
2354 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2355 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2356#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2357 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2358#endif 2909#endif
2359#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2360 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2390#endif 2941#endif
2391 } 2942 }
2392} 2943}
2393 2944
2394/* free up a loop structure */ 2945/* free up a loop structure */
2395void ecb_cold 2946ecb_cold
2947void
2396ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2397{ 2949{
2398 int i; 2950 int i;
2399 2951
2400#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2423 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2424 { 2976 {
2425 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2426 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2427 2979
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]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2436 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2437 }
2438 } 2982 }
2439 2983
2440#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2441 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2442 close (sigfd); 2986 close (sigfd);
… …
2528#endif 3072#endif
2529#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2530 infy_fork (EV_A); 3074 infy_fork (EV_A);
2531#endif 3075#endif
2532 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2533 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2534 { 3079 {
2535 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2536 3081
2537 ev_ref (EV_A); 3082 ev_ref (EV_A);
2538 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2539 3084
2540#if EV_USE_EVENTFD
2541 if (evfd >= 0)
2542 close (evfd);
2543#endif
2544
2545 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2546 {
2547 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2548 EV_WIN32_CLOSE_FD (evpipe [1]);
2549 }
2550 3087
2551#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2552 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2553 /* iterate over everything, in case we missed something before */ 3089 /* iterate over everything, in case we missed something before */
2554 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2555#endif
2556 } 3091 }
3092#endif
2557 3093
2558 postfork = 0; 3094 postfork = 0;
2559} 3095}
2560 3096
2561#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2562 3098
3099ecb_cold
2563struct ev_loop * ecb_cold 3100struct ev_loop *
2564ev_loop_new (unsigned int flags) EV_THROW 3101ev_loop_new (unsigned int flags) EV_THROW
2565{ 3102{
2566 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2567 3104
2568 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2576} 3113}
2577 3114
2578#endif /* multiplicity */ 3115#endif /* multiplicity */
2579 3116
2580#if EV_VERIFY 3117#if EV_VERIFY
2581static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2582verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2583{ 3121{
2584 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2585 3123
2586 if (w->pending) 3124 if (w->pending)
2587 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2588} 3126}
2589 3127
2590static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2591verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2592{ 3131{
2593 int i; 3132 int i;
2594 3133
2595 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2600 3139
2601 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2602 } 3141 }
2603} 3142}
2604 3143
2605static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2606array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2607{ 3147{
2608 while (cnt--) 3148 while (cnt--)
2609 { 3149 {
2610 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2699#endif 3239#endif
2700} 3240}
2701#endif 3241#endif
2702 3242
2703#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2704struct ev_loop * ecb_cold 3245struct ev_loop *
2705#else 3246#else
2706int 3247int
2707#endif 3248#endif
2708ev_default_loop (unsigned int flags) EV_THROW 3249ev_default_loop (unsigned int flags) EV_THROW
2709{ 3250{
… …
2757 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2758 3299
2759 return count; 3300 return count;
2760} 3301}
2761 3302
2762void noinline 3303noinline
3304void
2763ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2764{ 3306{
2765 pendingpri = NUMPRI; 3307 pendingpri = NUMPRI;
2766 3308
2767 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3309 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
… …
2842 } 3384 }
2843} 3385}
2844 3386
2845#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2846 3388
2847static void noinline 3389noinline
3390static void
2848periodic_recalc (EV_P_ ev_periodic *w) 3391periodic_recalc (EV_P_ ev_periodic *w)
2849{ 3392{
2850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3393 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3394 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2852 3395
… …
2910 } 3453 }
2911} 3454}
2912 3455
2913/* simply recalculate all periodics */ 3456/* simply recalculate all periodics */
2914/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3457/* TODO: maybe ensure that at least one event happens when jumping forward? */
2915static void noinline ecb_cold 3458noinline ecb_cold
3459static void
2916periodics_reschedule (EV_P) 3460periodics_reschedule (EV_P)
2917{ 3461{
2918 int i; 3462 int i;
2919 3463
2920 /* adjust periodics after time jump */ 3464 /* adjust periodics after time jump */
… …
2933 reheap (periodics, periodiccnt); 3477 reheap (periodics, periodiccnt);
2934} 3478}
2935#endif 3479#endif
2936 3480
2937/* adjust all timers by a given offset */ 3481/* adjust all timers by a given offset */
2938static void noinline ecb_cold 3482noinline ecb_cold
3483static void
2939timers_reschedule (EV_P_ ev_tstamp adjust) 3484timers_reschedule (EV_P_ ev_tstamp adjust)
2940{ 3485{
2941 int i; 3486 int i;
2942 3487
2943 for (i = 0; i < timercnt; ++i) 3488 for (i = 0; i < timercnt; ++i)
… …
3311 w->active = 0; 3856 w->active = 0;
3312} 3857}
3313 3858
3314/*****************************************************************************/ 3859/*****************************************************************************/
3315 3860
3316void noinline 3861noinline
3862void
3317ev_io_start (EV_P_ ev_io *w) EV_THROW 3863ev_io_start (EV_P_ ev_io *w) EV_THROW
3318{ 3864{
3319 int fd = w->fd; 3865 int fd = w->fd;
3320 3866
3321 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
… …
3337 w->events &= ~EV__IOFDSET; 3883 w->events &= ~EV__IOFDSET;
3338 3884
3339 EV_FREQUENT_CHECK; 3885 EV_FREQUENT_CHECK;
3340} 3886}
3341 3887
3342void noinline 3888noinline
3889void
3343ev_io_stop (EV_P_ ev_io *w) EV_THROW 3890ev_io_stop (EV_P_ ev_io *w) EV_THROW
3344{ 3891{
3345 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
3346 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
3347 return; 3894 return;
… …
3356 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3903 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3357 3904
3358 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
3359} 3906}
3360 3907
3361void noinline 3908noinline
3909void
3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3910ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3363{ 3911{
3364 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
3365 return; 3913 return;
3366 3914
… …
3380 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
3381 3929
3382 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3930 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3383} 3931}
3384 3932
3385void noinline 3933noinline
3934void
3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3935ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3387{ 3936{
3388 clear_pending (EV_A_ (W)w); 3937 clear_pending (EV_A_ (W)w);
3389 if (expect_false (!ev_is_active (w))) 3938 if (expect_false (!ev_is_active (w)))
3390 return; 3939 return;
… …
3410 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
3411 3960
3412 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
3413} 3962}
3414 3963
3415void noinline 3964noinline
3965void
3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3966ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3417{ 3967{
3418 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3419 3969
3420 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
… …
3444{ 3994{
3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3995 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3446} 3996}
3447 3997
3448#if EV_PERIODIC_ENABLE 3998#if EV_PERIODIC_ENABLE
3449void noinline 3999noinline
4000void
3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4001ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3451{ 4002{
3452 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
3453 return; 4004 return;
3454 4005
… …
3474 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
3475 4026
3476 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4027 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3477} 4028}
3478 4029
3479void noinline 4030noinline
4031void
3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4032ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3481{ 4033{
3482 clear_pending (EV_A_ (W)w); 4034 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4035 if (expect_false (!ev_is_active (w)))
3484 return; 4036 return;
… …
3502 ev_stop (EV_A_ (W)w); 4054 ev_stop (EV_A_ (W)w);
3503 4055
3504 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
3505} 4057}
3506 4058
3507void noinline 4059noinline
4060void
3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4061ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3509{ 4062{
3510 /* TODO: use adjustheap and recalculation */ 4063 /* TODO: use adjustheap and recalculation */
3511 ev_periodic_stop (EV_A_ w); 4064 ev_periodic_stop (EV_A_ w);
3512 ev_periodic_start (EV_A_ w); 4065 ev_periodic_start (EV_A_ w);
… …
3517# define SA_RESTART 0 4070# define SA_RESTART 0
3518#endif 4071#endif
3519 4072
3520#if EV_SIGNAL_ENABLE 4073#if EV_SIGNAL_ENABLE
3521 4074
3522void noinline 4075noinline
4076void
3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4077ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3524{ 4078{
3525 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
3526 return; 4080 return;
3527 4081
… …
3530#if EV_MULTIPLICITY 4084#if EV_MULTIPLICITY
3531 assert (("libev: a signal must not be attached to two different loops", 4085 assert (("libev: a signal must not be attached to two different loops",
3532 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4086 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3533 4087
3534 signals [w->signum - 1].loop = EV_A; 4088 signals [w->signum - 1].loop = EV_A;
4089 ECB_MEMORY_FENCE_RELEASE;
3535#endif 4090#endif
3536 4091
3537 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
3538 4093
3539#if EV_USE_SIGNALFD 4094#if EV_USE_SIGNALFD
… …
3598 } 4153 }
3599 4154
3600 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
3601} 4156}
3602 4157
3603void noinline 4158noinline
4159void
3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4160ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3605{ 4161{
3606 clear_pending (EV_A_ (W)w); 4162 clear_pending (EV_A_ (W)w);
3607 if (expect_false (!ev_is_active (w))) 4163 if (expect_false (!ev_is_active (w)))
3608 return; 4164 return;
… …
3684 4240
3685#define DEF_STAT_INTERVAL 5.0074891 4241#define DEF_STAT_INTERVAL 5.0074891
3686#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4242#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3687#define MIN_STAT_INTERVAL 0.1074891 4243#define MIN_STAT_INTERVAL 0.1074891
3688 4244
3689static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4245noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3690 4246
3691#if EV_USE_INOTIFY 4247#if EV_USE_INOTIFY
3692 4248
3693/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4249/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3694# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4250# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3695 4251
3696static void noinline 4252noinline
4253static void
3697infy_add (EV_P_ ev_stat *w) 4254infy_add (EV_P_ ev_stat *w)
3698{ 4255{
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); 4256 w->wd = inotify_add_watch (fs_fd, w->path,
4257 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4258 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4259 | IN_DONT_FOLLOW | IN_MASK_ADD);
3700 4260
3701 if (w->wd >= 0) 4261 if (w->wd >= 0)
3702 { 4262 {
3703 struct statfs sfs; 4263 struct statfs sfs;
3704 4264
… …
3708 4268
3709 if (!fs_2625) 4269 if (!fs_2625)
3710 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4270 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3711 else if (!statfs (w->path, &sfs) 4271 else if (!statfs (w->path, &sfs)
3712 && (sfs.f_type == 0x1373 /* devfs */ 4272 && (sfs.f_type == 0x1373 /* devfs */
4273 || sfs.f_type == 0x4006 /* fat */
4274 || sfs.f_type == 0x4d44 /* msdos */
3713 || sfs.f_type == 0xEF53 /* ext2/3 */ 4275 || sfs.f_type == 0xEF53 /* ext2/3 */
4276 || sfs.f_type == 0x72b6 /* jffs2 */
4277 || sfs.f_type == 0x858458f6 /* ramfs */
4278 || sfs.f_type == 0x5346544e /* ntfs */
3714 || sfs.f_type == 0x3153464a /* jfs */ 4279 || sfs.f_type == 0x3153464a /* jfs */
4280 || sfs.f_type == 0x9123683e /* btrfs */
3715 || sfs.f_type == 0x52654973 /* reiser3 */ 4281 || sfs.f_type == 0x52654973 /* reiser3 */
3716 || sfs.f_type == 0x01021994 /* tempfs */ 4282 || sfs.f_type == 0x01021994 /* tmpfs */
3717 || sfs.f_type == 0x58465342 /* xfs */)) 4283 || sfs.f_type == 0x58465342 /* xfs */))
3718 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4284 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3719 else 4285 else
3720 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4286 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3721 } 4287 }
… …
3756 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4322 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3757 ev_timer_again (EV_A_ &w->timer); 4323 ev_timer_again (EV_A_ &w->timer);
3758 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3759} 4325}
3760 4326
3761static void noinline 4327noinline
4328static void
3762infy_del (EV_P_ ev_stat *w) 4329infy_del (EV_P_ ev_stat *w)
3763{ 4330{
3764 int slot; 4331 int slot;
3765 int wd = w->wd; 4332 int wd = w->wd;
3766 4333
… …
3773 4340
3774 /* remove this watcher, if others are watching it, they will rearm */ 4341 /* remove this watcher, if others are watching it, they will rearm */
3775 inotify_rm_watch (fs_fd, wd); 4342 inotify_rm_watch (fs_fd, wd);
3776} 4343}
3777 4344
3778static void noinline 4345noinline
4346static void
3779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4347infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3780{ 4348{
3781 if (slot < 0) 4349 if (slot < 0)
3782 /* overflow, need to check for all hash slots */ 4350 /* overflow, need to check for all hash slots */
3783 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4351 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3819 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4387 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3820 ofs += sizeof (struct inotify_event) + ev->len; 4388 ofs += sizeof (struct inotify_event) + ev->len;
3821 } 4389 }
3822} 4390}
3823 4391
3824inline_size void ecb_cold 4392inline_size ecb_cold
4393void
3825ev_check_2625 (EV_P) 4394ev_check_2625 (EV_P)
3826{ 4395{
3827 /* kernels < 2.6.25 are borked 4396 /* kernels < 2.6.25 are borked
3828 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4397 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3829 */ 4398 */
… …
3927 w->attr.st_nlink = 0; 4496 w->attr.st_nlink = 0;
3928 else if (!w->attr.st_nlink) 4497 else if (!w->attr.st_nlink)
3929 w->attr.st_nlink = 1; 4498 w->attr.st_nlink = 1;
3930} 4499}
3931 4500
3932static void noinline 4501noinline
4502static void
3933stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4503stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3934{ 4504{
3935 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4505 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3936 4506
3937 ev_statdata prev = w->attr; 4507 ev_statdata prev = w->attr;
… …
4147 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
4148} 4718}
4149#endif 4719#endif
4150 4720
4151#if EV_EMBED_ENABLE 4721#if EV_EMBED_ENABLE
4152void noinline 4722noinline
4723void
4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4724ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4154{ 4725{
4155 ev_run (w->other, EVRUN_NOWAIT); 4726 ev_run (w->other, EVRUN_NOWAIT);
4156} 4727}
4157 4728
… …
4454} 5025}
4455 5026
4456/*****************************************************************************/ 5027/*****************************************************************************/
4457 5028
4458#if EV_WALK_ENABLE 5029#if EV_WALK_ENABLE
4459void ecb_cold 5030ecb_cold
5031void
4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5032ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4461{ 5033{
4462 int i, j; 5034 int i, j;
4463 ev_watcher_list *wl, *wn; 5035 ev_watcher_list *wl, *wn;
4464 5036

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines