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Comparing libev/ev.c (file contents):
Revision 1.432 by root, Mon May 14 19:09:58 2012 UTC vs.
Revision 1.485 by root, Mon Aug 13 10:01:19 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
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
508 540
509#ifdef _WIN32 541#ifdef _WIN32
510 typedef signed char int8_t; 542 typedef signed char int8_t;
511 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
512 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
518 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
522 #endif 554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
523#else 564#else
524 #include <inttypes.h> 565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
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
582 #endif
525#endif 583#endif
526 584
527/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so. 588 * or so.
531 * 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
532 * 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.
533 */ 591 */
534#ifndef ECB_GCC_VERSION
535 #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__
536 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
537 #else 594#else
538 #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)))
539 #endif 596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
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
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
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
540#endif 634#endif
541 635
542/*****************************************************************************/ 636/*****************************************************************************/
543 637
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* 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 */
546 640
547#if ECB_NO_THREADS 641#if ECB_NO_THREADS
548# define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
549#endif 643#endif
550 644
551#if ECB_NO_THREADS || ECB_NO_SMP 645#if ECB_NO_SMP
552 #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 */
553#endif 656#endif
554 657
555#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
556 #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
557 #if __i386 || __i386__ 660 #if __i386 || __i386__
558 #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")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 666 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #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 */
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
569 #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")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
574 #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")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__ 690 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #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. */
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
581 #elif defined __alpha__ 696 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
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")
583 #endif 709 #endif
584 #endif 710 #endif
585#endif 711#endif
586 712
587#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
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)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
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
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 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()
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #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 */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
606 #define ECB_MEMORY_FENCE __sync () 748 #define ECB_MEMORY_FENCE __sync ()
607 #endif 749 #endif
608#endif 750#endif
609 751
610#ifndef ECB_MEMORY_FENCE 752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
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 */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS 770 #if !ECB_AVOID_PTHREADS
612 /* 771 /*
613 * if you get undefined symbol references to pthread_mutex_lock, 772 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement 773 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler 774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
… …
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif 793#endif
635 794
636/*****************************************************************************/ 795/*****************************************************************************/
637 796
638#define ECB_C99 (__STDC_VERSION__ >= 199901L) 797#if ECB_CPP
639
640#if __cplusplus
641 #define ecb_inline static inline 798 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
644#elif ECB_C99 801#elif ECB_C99
645 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
659 816
660#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
663#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))
664 822
665#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
666 824
667#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
668 #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)
669 #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)
670 #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)
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else 849#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality) 850 #define ecb_prefetch(addr,rw,locality)
677#endif 851#endif
678 852
679/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
680#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; };
681 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
682#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
683 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
684#endif 860#endif
685 861
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
686#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__)) 880#endif
881
688#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
885
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 */
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)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
691 897
692#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__)) 899 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__)) 900 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__)) 901 #define ecb_cold ecb_attribute ((__cold__))
… …
707/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
710 916
711/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
712#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))
713 /* 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 */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */ 928 /* no popcountll */
720#else 929#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
722 ecb_function_ int 931 ecb_function_ ecb_const int
723 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
724 { 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
725 int r = 0; 939 int r = 0;
726 940
727 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
728 942
729#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
739 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
741#endif 955#endif
742 956
743 return r; 957 return r;
958#endif
744 } 959 }
745 960
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
747 ecb_function_ int 962 ecb_function_ ecb_const int
748 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
749 { 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
750 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
752 } 973 }
753 974
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
755 ecb_function_ int 976 ecb_function_ ecb_const int
756 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
757 { 978 {
758 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101; 982 x *= 0x01010101;
762 983
763 return x >> 24; 984 return x >> 24;
764 } 985 }
765 986
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
767 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
768 { 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
769 int r = 0; 995 int r = 0;
770 996
771 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
776 1002
777 return r; 1003 return r;
1004#endif
778 } 1005 }
779 1006
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
781 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
782 { 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
783 int r = 0; 1015 int r = 0;
784 1016
785 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
786 1018
787 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
788 } 1021 }
789#endif 1022#endif
790 1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
793{ 1031{
794 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796} 1034}
797 1035
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
800{ 1038{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
805 1043
806 return x; 1044 return x;
807} 1045}
808 1046
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
811{ 1049{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
818 return x; 1056 return x;
819} 1057}
820 1058
821/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */ 1060/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
824ecb_function_ int 1062ecb_function_ ecb_const int
825ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
826{ 1064{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828} 1066}
829 1067
830ecb_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);
831ecb_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);
832ecb_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);
833ecb_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);
834ecb_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);
835ecb_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);
836ecb_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);
837ecb_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);
838 1076
839ecb_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); }
840ecb_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); }
841ecb_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); }
842ecb_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); }
843ecb_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); }
844ecb_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); }
845ecb_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); }
846ecb_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); }
847 1085
848#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
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
850 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #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)))
852#else 1099#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
854 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
855 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
856 { 1103 {
857 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
858 } 1105 }
859 1106
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
861 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
862 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
863 { 1110 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 } 1112 }
866 1113
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
868 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
869 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
870 { 1117 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 } 1119 }
873#endif 1120#endif
874 1121
875#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
876 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
877#else 1124#else
878 /* 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 :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
880 ecb_inline void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
881#endif 1128#endif
882 1129
883/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
885 1132
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
887ecb_inline unsigned char 1134ecb_inline ecb_const uint32_t
888ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
889{ 1136{
890 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
891 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
892} 1159}
893 1160
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
895ecb_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; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
897ecb_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; }
898 1165
899#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #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))
901#else 1168#else
902 #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)))
903#endif 1170#endif
904 1171
905#if __cplusplus 1172#if ECB_CPP
906 template<typename T> 1173 template<typename T>
907 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
908 { 1175 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 } 1177 }
… …
927 } 1194 }
928#else 1195#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif 1197#endif
931 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
932#endif 1504#endif
933 1505
934/* ECB.H END */ 1506/* ECB.H END */
935 1507
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
957#define inline_size ecb_inline 1529#define inline_size ecb_inline
958 1530
959#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
960# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
961#else 1533#else
962# define inline_speed static noinline 1534# define inline_speed noinline static
963#endif 1535#endif
964 1536
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966 1538
967#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
1014#else 1586#else
1015 1587
1016#include <float.h> 1588#include <float.h>
1017 1589
1018/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1019static ev_tstamp noinline 1592static ev_tstamp
1020ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1021{ 1594{
1022 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1056 1629
1057#ifdef __linux 1630#ifdef __linux
1058# include <sys/utsname.h> 1631# include <sys/utsname.h>
1059#endif 1632#endif
1060 1633
1061static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1062ev_linux_version (void) 1636ev_linux_version (void)
1063{ 1637{
1064#ifdef __linux 1638#ifdef __linux
1065 unsigned int v = 0; 1639 unsigned int v = 0;
1066 struct utsname buf; 1640 struct utsname buf;
… …
1095} 1669}
1096 1670
1097/*****************************************************************************/ 1671/*****************************************************************************/
1098 1672
1099#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1100static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1101ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1102{ 1677{
1103 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1104} 1679}
1105#endif 1680#endif
1106 1681
1107static void (*syserr_cb)(const char *msg) EV_THROW; 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1108 1683
1109void ecb_cold 1684ecb_cold
1685void
1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1111{ 1687{
1112 syserr_cb = cb; 1688 syserr_cb = cb;
1113} 1689}
1114 1690
1115static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1116ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1117{ 1694{
1118 if (!msg) 1695 if (!msg)
1119 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1120 1697
… …
1133 abort (); 1710 abort ();
1134 } 1711 }
1135} 1712}
1136 1713
1137static void * 1714static void *
1138ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
1139{ 1716{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
1143 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1144 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
1145 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
1146 */ 1722 */
1147 1723
1148 if (size) 1724 if (size)
1149 return realloc (ptr, size); 1725 return realloc (ptr, size);
1150 1726
1151 free (ptr); 1727 free (ptr);
1152 return 0; 1728 return 0;
1153#endif
1154} 1729}
1155 1730
1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1157 1732
1158void ecb_cold 1733ecb_cold
1734void
1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1160{ 1736{
1161 alloc = cb; 1737 alloc = cb;
1162} 1738}
1163 1739
1164inline_speed void * 1740inline_speed void *
… …
1332 struct timespec ts; 1908 struct timespec ts;
1333 1909
1334 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1335 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1336#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) */
1337 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1338#else 1916#else
1339 struct timeval tv; 1917 struct timeval tv;
1340 1918
1341 /* 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 */
… …
1372 } 1950 }
1373 1951
1374 return ncur; 1952 return ncur;
1375} 1953}
1376 1954
1377static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1378array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1379{ 1958{
1380 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1381 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1382} 1961}
… …
1385 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1386 1965
1387#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1388 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1389 { \ 1968 { \
1390 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1391 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1392 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1393 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1394 } 1973 }
1395 1974
… …
1407 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
1408 1987
1409/*****************************************************************************/ 1988/*****************************************************************************/
1410 1989
1411/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1412static void noinline 1991noinline
1992static void
1413pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1414{ 1994{
1415} 1995}
1416 1996
1417void noinline 1997noinline
1998void
1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1419{ 2000{
1420 W w_ = (W)w; 2001 W w_ = (W)w;
1421 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1422 2003
… …
1552 2133
1553 fdchangecnt = 0; 2134 fdchangecnt = 0;
1554} 2135}
1555 2136
1556/* something about the given fd changed */ 2137/* something about the given fd changed */
1557inline_size void 2138inline_size
2139void
1558fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1559{ 2141{
1560 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1561 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1562 2144
… …
1567 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1568 } 2150 }
1569} 2151}
1570 2152
1571/* 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 */
1572inline_speed void ecb_cold 2154inline_speed ecb_cold void
1573fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1574{ 2156{
1575 ev_io *w; 2157 ev_io *w;
1576 2158
1577 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1580 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);
1581 } 2163 }
1582} 2164}
1583 2165
1584/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold 2167inline_size ecb_cold int
1586fd_valid (int fd) 2168fd_valid (int fd)
1587{ 2169{
1588#ifdef _WIN32 2170#ifdef _WIN32
1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1590#else 2172#else
1591 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1592#endif 2174#endif
1593} 2175}
1594 2176
1595/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1596static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1597fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1598{ 2181{
1599 int fd; 2182 int fd;
1600 2183
1601 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1603 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1604 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1605} 2188}
1606 2189
1607/* 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 */
1608static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1609fd_enomem (EV_P) 2193fd_enomem (EV_P)
1610{ 2194{
1611 int fd; 2195 int fd;
1612 2196
1613 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1617 break; 2201 break;
1618 } 2202 }
1619} 2203}
1620 2204
1621/* 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 */
1622static void noinline 2206noinline
2207static void
1623fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1624{ 2209{
1625 int fd; 2210 int fd;
1626 2211
1627 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1808 2393
1809/*****************************************************************************/ 2394/*****************************************************************************/
1810 2395
1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1812 2397
1813static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1814evpipe_init (EV_P) 2400evpipe_init (EV_P)
1815{ 2401{
1816 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1817 { 2403 {
2404 int fds [2];
2405
1818# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1821 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1822 2411
1823 if (evfd >= 0) 2412 if (fds [1] < 0)
1824 {
1825 evpipe [0] = -1;
1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1827 ev_io_set (&pipe_w, evfd, EV_READ);
1828 }
1829 else
1830# endif 2413# endif
1831 { 2414 {
1832 while (pipe (evpipe)) 2415 while (pipe (fds))
1833 ev_syserr ("(libev) error creating signal/async pipe"); 2416 ev_syserr ("(libev) error creating signal/async pipe");
1834 2417
1835 fd_intern (evpipe [0]); 2418 fd_intern (fds [0]);
1836 fd_intern (evpipe [1]);
1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1838 } 2419 }
1839 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);
1840 ev_io_start (EV_A_ &pipe_w); 2439 ev_io_start (EV_A_ &pipe_w);
1841 ev_unref (EV_A); /* watcher should not keep loop alive */ 2440 ev_unref (EV_A); /* watcher should not keep loop alive */
1842 } 2441 }
1843} 2442}
1844 2443
… …
1849 2448
1850 if (expect_true (*flag)) 2449 if (expect_true (*flag))
1851 return; 2450 return;
1852 2451
1853 *flag = 1; 2452 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856 2454
1857 pipe_write_skipped = 1; 2455 pipe_write_skipped = 1;
1858 2456
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ 2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860 2458
1861 if (pipe_write_wanted) 2459 if (pipe_write_wanted)
1862 { 2460 {
1863 int old_errno; 2461 int old_errno;
1864 2462
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */ 2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
1866 2465
1867 old_errno = errno; /* save errno because write will clobber it */ 2466 old_errno = errno; /* save errno because write will clobber it */
1868 2467
1869#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
1870 if (evfd >= 0) 2469 if (evpipe [0] < 0)
1871 { 2470 {
1872 uint64_t counter = 1; 2471 uint64_t counter = 1;
1873 write (evfd, &counter, sizeof (uint64_t)); 2472 write (evpipe [1], &counter, sizeof (uint64_t));
1874 } 2473 }
1875 else 2474 else
1876#endif 2475#endif
1877 { 2476 {
1878#ifdef _WIN32 2477#ifdef _WIN32
1879 WSABUF buf; 2478 WSABUF buf;
1880 DWORD sent; 2479 DWORD sent;
1881 buf.buf = &buf; 2480 buf.buf = (char *)&buf;
1882 buf.len = 1; 2481 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else 2483#else
1885 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
1886#endif 2485#endif
… …
1898 int i; 2497 int i;
1899 2498
1900 if (revents & EV_READ) 2499 if (revents & EV_READ)
1901 { 2500 {
1902#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1903 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1904 { 2503 {
1905 uint64_t counter; 2504 uint64_t counter;
1906 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1907 } 2506 }
1908 else 2507 else
1909#endif 2508#endif
1910 { 2509 {
1911 char dummy[4]; 2510 char dummy[4];
… …
1929#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1930 if (sig_pending) 2529 if (sig_pending)
1931 { 2530 {
1932 sig_pending = 0; 2531 sig_pending = 0;
1933 2532
1934 ECB_MEMORY_FENCE_RELEASE; 2533 ECB_MEMORY_FENCE;
1935 2534
1936 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1937 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1938 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1939 } 2538 }
… …
1942#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1943 if (async_pending) 2542 if (async_pending)
1944 { 2543 {
1945 async_pending = 0; 2544 async_pending = 0;
1946 2545
1947 ECB_MEMORY_FENCE_RELEASE; 2546 ECB_MEMORY_FENCE;
1948 2547
1949 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1950 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1951 { 2550 {
1952 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1953 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1954 } 2554 }
1955 } 2555 }
1956#endif 2556#endif
1957} 2557}
… …
1960 2560
1961void 2561void
1962ev_feed_signal (int signum) EV_THROW 2562ev_feed_signal (int signum) EV_THROW
1963{ 2563{
1964#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1965 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1966 2568
1967 if (!EV_A) 2569 if (!EV_A)
1968 return; 2570 return;
1969#endif 2571#endif
1970 2572
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1976} 2575}
1977 2576
1978static void 2577static void
… …
1983#endif 2582#endif
1984 2583
1985 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1986} 2585}
1987 2586
1988void noinline 2587noinline
2588void
1989ev_feed_signal_event (EV_P_ int signum) EV_THROW 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1990{ 2590{
1991 WL w; 2591 WL w;
1992 2592
1993 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1994 return; 2594 return;
1995 2595
1996 --signum; 2596 --signum;
1997 2597
1998#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
2002 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
2003 return; 2603 return;
2004#endif 2604#endif
2005 2605
2006 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
2007 2608
2008 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
2009 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2010} 2611}
2011 2612
… …
2109#endif 2710#endif
2110#if EV_USE_SELECT 2711#if EV_USE_SELECT
2111# include "ev_select.c" 2712# include "ev_select.c"
2112#endif 2713#endif
2113 2714
2114int ecb_cold 2715ecb_cold int
2115ev_version_major (void) EV_THROW 2716ev_version_major (void) EV_THROW
2116{ 2717{
2117 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2118} 2719}
2119 2720
2120int ecb_cold 2721ecb_cold int
2121ev_version_minor (void) EV_THROW 2722ev_version_minor (void) EV_THROW
2122{ 2723{
2123 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2124} 2725}
2125 2726
2126/* 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 */
2127int inline_size ecb_cold 2728inline_size ecb_cold int
2128enable_secure (void) 2729enable_secure (void)
2129{ 2730{
2130#ifdef _WIN32 2731#ifdef _WIN32
2131 return 0; 2732 return 0;
2132#else 2733#else
2133 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2134 || getgid () != getegid (); 2735 || getgid () != getegid ();
2135#endif 2736#endif
2136} 2737}
2137 2738
2138unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2139ev_supported_backends (void) EV_THROW 2741ev_supported_backends (void) EV_THROW
2140{ 2742{
2141 unsigned int flags = 0; 2743 unsigned int flags = 0;
2142 2744
2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2148 2750
2149 return flags; 2751 return flags;
2150} 2752}
2151 2753
2152unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2153ev_recommended_backends (void) EV_THROW 2756ev_recommended_backends (void) EV_THROW
2154{ 2757{
2155 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2156 2759
2157#ifndef __NetBSD__ 2760#ifndef __NetBSD__
… …
2169#endif 2772#endif
2170 2773
2171 return flags; 2774 return flags;
2172} 2775}
2173 2776
2174unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2175ev_embeddable_backends (void) EV_THROW 2779ev_embeddable_backends (void) EV_THROW
2176{ 2780{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178 2782
2179 /* 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 */
… …
2225{ 2829{
2226 return userdata; 2830 return userdata;
2227} 2831}
2228 2832
2229void 2833void
2230ev_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
2231{ 2835{
2232 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2233} 2837}
2234 2838
2235void 2839void
… …
2239 acquire_cb = acquire; 2843 acquire_cb = acquire;
2240} 2844}
2241#endif 2845#endif
2242 2846
2243/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2244static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2245loop_init (EV_P_ unsigned int flags) EV_THROW 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2246{ 2851{
2247 if (!backend) 2852 if (!backend)
2248 { 2853 {
2249 origflags = flags; 2854 origflags = flags;
… …
2295#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2296 async_pending = 0; 2901 async_pending = 0;
2297#endif 2902#endif
2298 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2300#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2302#endif 2909#endif
2303#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2334#endif 2941#endif
2335 } 2942 }
2336} 2943}
2337 2944
2338/* free up a loop structure */ 2945/* free up a loop structure */
2339void ecb_cold 2946ecb_cold
2947void
2340ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2341{ 2949{
2342 int i; 2950 int i;
2343 2951
2344#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2355 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2356 } 2964 }
2357#endif 2965#endif
2358 2966
2359#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2360 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2361 { 2969 {
2362 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2364 } 2972 }
2365#endif 2973#endif
… …
2367 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2368 { 2976 {
2369 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2370 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2371 2979
2372#if EV_USE_EVENTFD
2373 if (evfd >= 0)
2374 close (evfd);
2375#endif
2376
2377 if (evpipe [0] >= 0)
2378 {
2379 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2380 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2381 }
2382 } 2982 }
2383 2983
2384#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2385 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2386 close (sigfd); 2986 close (sigfd);
… …
2472#endif 3072#endif
2473#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2474 infy_fork (EV_A); 3074 infy_fork (EV_A);
2475#endif 3075#endif
2476 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2477 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2478 { 3079 {
2479 /* 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 */
2480 3081
2481 ev_ref (EV_A); 3082 ev_ref (EV_A);
2482 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2483 3084
2484#if EV_USE_EVENTFD
2485 if (evfd >= 0)
2486 close (evfd);
2487#endif
2488
2489 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2490 {
2491 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2492 EV_WIN32_CLOSE_FD (evpipe [1]);
2493 }
2494 3087
2495#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2496 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2497 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2498 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2499#endif
2500 } 3091 }
3092#endif
2501 3093
2502 postfork = 0; 3094 postfork = 0;
2503} 3095}
2504 3096
2505#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2506 3098
3099ecb_cold
2507struct ev_loop * ecb_cold 3100struct ev_loop *
2508ev_loop_new (unsigned int flags) EV_THROW 3101ev_loop_new (unsigned int flags) EV_THROW
2509{ 3102{
2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2511 3104
2512 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2520} 3113}
2521 3114
2522#endif /* multiplicity */ 3115#endif /* multiplicity */
2523 3116
2524#if EV_VERIFY 3117#if EV_VERIFY
2525static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2526verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2527{ 3121{
2528 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));
2529 3123
2530 if (w->pending) 3124 if (w->pending)
2531 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));
2532} 3126}
2533 3127
2534static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2535verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2536{ 3131{
2537 int i; 3132 int i;
2538 3133
2539 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2544 3139
2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2546 } 3141 }
2547} 3142}
2548 3143
2549static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2550array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2551{ 3147{
2552 while (cnt--) 3148 while (cnt--)
2553 { 3149 {
2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2643#endif 3239#endif
2644} 3240}
2645#endif 3241#endif
2646 3242
2647#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2648struct ev_loop * ecb_cold 3245struct ev_loop *
2649#else 3246#else
2650int 3247int
2651#endif 3248#endif
2652ev_default_loop (unsigned int flags) EV_THROW 3249ev_default_loop (unsigned int flags) EV_THROW
2653{ 3250{
… …
2678} 3275}
2679 3276
2680void 3277void
2681ev_loop_fork (EV_P) EV_THROW 3278ev_loop_fork (EV_P) EV_THROW
2682{ 3279{
2683 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2684} 3281}
2685 3282
2686/*****************************************************************************/ 3283/*****************************************************************************/
2687 3284
2688void 3285void
… …
2701 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2702 3299
2703 return count; 3300 return count;
2704} 3301}
2705 3302
2706void noinline 3303noinline
3304void
2707ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2708{ 3306{
2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3307 pendingpri = NUMPRI;
3308
3309 do
3310 {
3311 --pendingpri;
3312
3313 /* pendingpri possibly gets modified in the inner loop */
2710 while (pendingcnt [pendingpri]) 3314 while (pendingcnt [pendingpri])
2711 { 3315 {
2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3316 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2713 3317
2714 p->w->pending = 0; 3318 p->w->pending = 0;
2715 EV_CB_INVOKE (p->w, p->events); 3319 EV_CB_INVOKE (p->w, p->events);
2716 EV_FREQUENT_CHECK; 3320 EV_FREQUENT_CHECK;
2717 } 3321 }
3322 }
3323 while (pendingpri);
2718} 3324}
2719 3325
2720#if EV_IDLE_ENABLE 3326#if EV_IDLE_ENABLE
2721/* make idle watchers pending. this handles the "call-idle */ 3327/* make idle watchers pending. this handles the "call-idle */
2722/* only when higher priorities are idle" logic */ 3328/* only when higher priorities are idle" logic */
… …
2780 } 3386 }
2781} 3387}
2782 3388
2783#if EV_PERIODIC_ENABLE 3389#if EV_PERIODIC_ENABLE
2784 3390
2785static void noinline 3391noinline
3392static void
2786periodic_recalc (EV_P_ ev_periodic *w) 3393periodic_recalc (EV_P_ ev_periodic *w)
2787{ 3394{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3395 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3396 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790 3397
… …
2812{ 3419{
2813 EV_FREQUENT_CHECK; 3420 EV_FREQUENT_CHECK;
2814 3421
2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3422 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2816 { 3423 {
2817 int feed_count = 0;
2818
2819 do 3424 do
2820 { 3425 {
2821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3426 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2822 3427
2823 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3428 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2850 } 3455 }
2851} 3456}
2852 3457
2853/* simply recalculate all periodics */ 3458/* simply recalculate all periodics */
2854/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3459/* TODO: maybe ensure that at least one event happens when jumping forward? */
2855static void noinline ecb_cold 3460noinline ecb_cold
3461static void
2856periodics_reschedule (EV_P) 3462periodics_reschedule (EV_P)
2857{ 3463{
2858 int i; 3464 int i;
2859 3465
2860 /* adjust periodics after time jump */ 3466 /* adjust periodics after time jump */
… …
2873 reheap (periodics, periodiccnt); 3479 reheap (periodics, periodiccnt);
2874} 3480}
2875#endif 3481#endif
2876 3482
2877/* adjust all timers by a given offset */ 3483/* adjust all timers by a given offset */
2878static void noinline ecb_cold 3484noinline ecb_cold
3485static void
2879timers_reschedule (EV_P_ ev_tstamp adjust) 3486timers_reschedule (EV_P_ ev_tstamp adjust)
2880{ 3487{
2881 int i; 3488 int i;
2882 3489
2883 for (i = 0; i < timercnt; ++i) 3490 for (i = 0; i < timercnt; ++i)
… …
3082 backend_poll (EV_A_ waittime); 3689 backend_poll (EV_A_ waittime);
3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3690 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084 3691
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3692 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086 3693
3694 ECB_MEMORY_FENCE_ACQUIRE;
3087 if (pipe_write_skipped) 3695 if (pipe_write_skipped)
3088 { 3696 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3697 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3698 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 } 3699 }
… …
3250 w->active = 0; 3858 w->active = 0;
3251} 3859}
3252 3860
3253/*****************************************************************************/ 3861/*****************************************************************************/
3254 3862
3255void noinline 3863noinline
3864void
3256ev_io_start (EV_P_ ev_io *w) EV_THROW 3865ev_io_start (EV_P_ ev_io *w) EV_THROW
3257{ 3866{
3258 int fd = w->fd; 3867 int fd = w->fd;
3259 3868
3260 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
… …
3276 w->events &= ~EV__IOFDSET; 3885 w->events &= ~EV__IOFDSET;
3277 3886
3278 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
3279} 3888}
3280 3889
3281void noinline 3890noinline
3891void
3282ev_io_stop (EV_P_ ev_io *w) EV_THROW 3892ev_io_stop (EV_P_ ev_io *w) EV_THROW
3283{ 3893{
3284 clear_pending (EV_A_ (W)w); 3894 clear_pending (EV_A_ (W)w);
3285 if (expect_false (!ev_is_active (w))) 3895 if (expect_false (!ev_is_active (w)))
3286 return; 3896 return;
… …
3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3905 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3296 3906
3297 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
3298} 3908}
3299 3909
3300void noinline 3910noinline
3911void
3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3912ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3302{ 3913{
3303 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3304 return; 3915 return;
3305 3916
… …
3319 EV_FREQUENT_CHECK; 3930 EV_FREQUENT_CHECK;
3320 3931
3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3932 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3322} 3933}
3323 3934
3324void noinline 3935noinline
3936void
3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3937ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3326{ 3938{
3327 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3329 return; 3941 return;
… …
3349 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
3350 3962
3351 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
3352} 3964}
3353 3965
3354void noinline 3966noinline
3967void
3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3968ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3356{ 3969{
3357 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3358 3971
3359 clear_pending (EV_A_ (W)w); 3972 clear_pending (EV_A_ (W)w);
… …
3383{ 3996{
3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3997 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3385} 3998}
3386 3999
3387#if EV_PERIODIC_ENABLE 4000#if EV_PERIODIC_ENABLE
3388void noinline 4001noinline
4002void
3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4003ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3390{ 4004{
3391 if (expect_false (ev_is_active (w))) 4005 if (expect_false (ev_is_active (w)))
3392 return; 4006 return;
3393 4007
… …
3413 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3414 4028
3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4029 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3416} 4030}
3417 4031
3418void noinline 4032noinline
4033void
3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4034ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3420{ 4035{
3421 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
3422 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
3423 return; 4038 return;
… …
3441 ev_stop (EV_A_ (W)w); 4056 ev_stop (EV_A_ (W)w);
3442 4057
3443 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
3444} 4059}
3445 4060
3446void noinline 4061noinline
4062void
3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4063ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3448{ 4064{
3449 /* TODO: use adjustheap and recalculation */ 4065 /* TODO: use adjustheap and recalculation */
3450 ev_periodic_stop (EV_A_ w); 4066 ev_periodic_stop (EV_A_ w);
3451 ev_periodic_start (EV_A_ w); 4067 ev_periodic_start (EV_A_ w);
… …
3456# define SA_RESTART 0 4072# define SA_RESTART 0
3457#endif 4073#endif
3458 4074
3459#if EV_SIGNAL_ENABLE 4075#if EV_SIGNAL_ENABLE
3460 4076
3461void noinline 4077noinline
4078void
3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4079ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3463{ 4080{
3464 if (expect_false (ev_is_active (w))) 4081 if (expect_false (ev_is_active (w)))
3465 return; 4082 return;
3466 4083
… …
3469#if EV_MULTIPLICITY 4086#if EV_MULTIPLICITY
3470 assert (("libev: a signal must not be attached to two different loops", 4087 assert (("libev: a signal must not be attached to two different loops",
3471 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4088 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3472 4089
3473 signals [w->signum - 1].loop = EV_A; 4090 signals [w->signum - 1].loop = EV_A;
4091 ECB_MEMORY_FENCE_RELEASE;
3474#endif 4092#endif
3475 4093
3476 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3477 4095
3478#if EV_USE_SIGNALFD 4096#if EV_USE_SIGNALFD
… …
3537 } 4155 }
3538 4156
3539 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3540} 4158}
3541 4159
3542void noinline 4160noinline
4161void
3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4162ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3544{ 4163{
3545 clear_pending (EV_A_ (W)w); 4164 clear_pending (EV_A_ (W)w);
3546 if (expect_false (!ev_is_active (w))) 4165 if (expect_false (!ev_is_active (w)))
3547 return; 4166 return;
… …
3623 4242
3624#define DEF_STAT_INTERVAL 5.0074891 4243#define DEF_STAT_INTERVAL 5.0074891
3625#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4244#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3626#define MIN_STAT_INTERVAL 0.1074891 4245#define MIN_STAT_INTERVAL 0.1074891
3627 4246
3628static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4247noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3629 4248
3630#if EV_USE_INOTIFY 4249#if EV_USE_INOTIFY
3631 4250
3632/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4251/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3633# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4252# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3634 4253
3635static void noinline 4254noinline
4255static void
3636infy_add (EV_P_ ev_stat *w) 4256infy_add (EV_P_ ev_stat *w)
3637{ 4257{
3638 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); 4258 w->wd = inotify_add_watch (fs_fd, w->path,
4259 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4260 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4261 | IN_DONT_FOLLOW | IN_MASK_ADD);
3639 4262
3640 if (w->wd >= 0) 4263 if (w->wd >= 0)
3641 { 4264 {
3642 struct statfs sfs; 4265 struct statfs sfs;
3643 4266
… …
3647 4270
3648 if (!fs_2625) 4271 if (!fs_2625)
3649 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4272 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3650 else if (!statfs (w->path, &sfs) 4273 else if (!statfs (w->path, &sfs)
3651 && (sfs.f_type == 0x1373 /* devfs */ 4274 && (sfs.f_type == 0x1373 /* devfs */
4275 || sfs.f_type == 0x4006 /* fat */
4276 || sfs.f_type == 0x4d44 /* msdos */
3652 || sfs.f_type == 0xEF53 /* ext2/3 */ 4277 || sfs.f_type == 0xEF53 /* ext2/3 */
4278 || sfs.f_type == 0x72b6 /* jffs2 */
4279 || sfs.f_type == 0x858458f6 /* ramfs */
4280 || sfs.f_type == 0x5346544e /* ntfs */
3653 || sfs.f_type == 0x3153464a /* jfs */ 4281 || sfs.f_type == 0x3153464a /* jfs */
4282 || sfs.f_type == 0x9123683e /* btrfs */
3654 || sfs.f_type == 0x52654973 /* reiser3 */ 4283 || sfs.f_type == 0x52654973 /* reiser3 */
3655 || sfs.f_type == 0x01021994 /* tempfs */ 4284 || sfs.f_type == 0x01021994 /* tmpfs */
3656 || sfs.f_type == 0x58465342 /* xfs */)) 4285 || sfs.f_type == 0x58465342 /* xfs */))
3657 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4286 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3658 else 4287 else
3659 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4288 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3660 } 4289 }
… …
3695 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3696 ev_timer_again (EV_A_ &w->timer); 4325 ev_timer_again (EV_A_ &w->timer);
3697 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3698} 4327}
3699 4328
3700static void noinline 4329noinline
4330static void
3701infy_del (EV_P_ ev_stat *w) 4331infy_del (EV_P_ ev_stat *w)
3702{ 4332{
3703 int slot; 4333 int slot;
3704 int wd = w->wd; 4334 int wd = w->wd;
3705 4335
… …
3712 4342
3713 /* remove this watcher, if others are watching it, they will rearm */ 4343 /* remove this watcher, if others are watching it, they will rearm */
3714 inotify_rm_watch (fs_fd, wd); 4344 inotify_rm_watch (fs_fd, wd);
3715} 4345}
3716 4346
3717static void noinline 4347noinline
4348static void
3718infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4349infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3719{ 4350{
3720 if (slot < 0) 4351 if (slot < 0)
3721 /* overflow, need to check for all hash slots */ 4352 /* overflow, need to check for all hash slots */
3722 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4353 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3758 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4389 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3759 ofs += sizeof (struct inotify_event) + ev->len; 4390 ofs += sizeof (struct inotify_event) + ev->len;
3760 } 4391 }
3761} 4392}
3762 4393
3763inline_size void ecb_cold 4394inline_size ecb_cold
4395void
3764ev_check_2625 (EV_P) 4396ev_check_2625 (EV_P)
3765{ 4397{
3766 /* kernels < 2.6.25 are borked 4398 /* kernels < 2.6.25 are borked
3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4399 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3768 */ 4400 */
… …
3866 w->attr.st_nlink = 0; 4498 w->attr.st_nlink = 0;
3867 else if (!w->attr.st_nlink) 4499 else if (!w->attr.st_nlink)
3868 w->attr.st_nlink = 1; 4500 w->attr.st_nlink = 1;
3869} 4501}
3870 4502
3871static void noinline 4503noinline
4504static void
3872stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4505stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3873{ 4506{
3874 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4507 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3875 4508
3876 ev_statdata prev = w->attr; 4509 ev_statdata prev = w->attr;
… …
4086 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4087} 4720}
4088#endif 4721#endif
4089 4722
4090#if EV_EMBED_ENABLE 4723#if EV_EMBED_ENABLE
4091void noinline 4724noinline
4725void
4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4726ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4093{ 4727{
4094 ev_run (w->other, EVRUN_NOWAIT); 4728 ev_run (w->other, EVRUN_NOWAIT);
4095} 4729}
4096 4730
… …
4393} 5027}
4394 5028
4395/*****************************************************************************/ 5029/*****************************************************************************/
4396 5030
4397#if EV_WALK_ENABLE 5031#if EV_WALK_ENABLE
4398void ecb_cold 5032ecb_cold
5033void
4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5034ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4400{ 5035{
4401 int i, j; 5036 int i, j;
4402 ev_watcher_list *wl, *wn; 5037 ev_watcher_list *wl, *wn;
4403 5038

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