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Comparing libev/ev.c (file contents):
Revision 1.423 by root, Sun Apr 22 10:14:20 2012 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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
… …
201# include <sys/wait.h> 201# include <sys/wait.h>
202# include <unistd.h> 202# include <unistd.h>
203#else 203#else
204# include <io.h> 204# include <io.h>
205# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
206# include <windows.h> 207# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
209# endif 210# endif
210# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
240#elif defined SIGARRAYSIZE 241#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 243#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 245#else
245# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 247#endif
250 248
251#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
253#endif 251#endif
254 252
255#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 256# else
259# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
258# endif
259#endif
260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
260# endif 267# endif
261#endif 268#endif
262 269
263#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
354# define EV_USE_4HEAP EV_FEATURE_DATA 361# define EV_USE_4HEAP EV_FEATURE_DATA
355#endif 362#endif
356 363
357#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
359#endif 382#endif
360 383
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
… …
372# endif 395# endif
373#endif 396#endif
374 397
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 399
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
386#endif 403#endif
387 404
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
412# endif 429# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 430#endif
418 431
419#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 434# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
480/* 493/*
481 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
482 * 495 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 498 * All rights reserved.
486 * 499 *
487 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
507 */ 531 */
508 532
509#ifndef ECB_H 533#ifndef ECB_H
510#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
511 538
512#ifdef _WIN32 539#ifdef _WIN32
513 typedef signed char int8_t; 540 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
525 #endif 552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
526#else 562#else
527 #include <inttypes.h> 563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
528#endif 581#endif
529 582
530/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 586 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 587 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 588 * an issue with that they should have done it right in the first place.
536 */ 589 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
540 #else 592#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
543#endif 632#endif
544 633
545/*****************************************************************************/ 634/*****************************************************************************/
546 635
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 638
550#if ECB_NO_THREADS 639#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 640 #define ECB_NO_SMP 1
552#endif 641#endif
553 642
554#if ECB_NO_THREADS || ECB_NO_SMP 643#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 654#endif
557 655
558#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 658 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 662 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 688 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 694 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 707 #endif
587 #endif 708 #endif
588#endif 709#endif
589 710
590#ifndef ECB_MEMORY_FENCE 711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
609 #define ECB_MEMORY_FENCE __sync () 746 #define ECB_MEMORY_FENCE __sync ()
610 #endif 747 #endif
611#endif 748#endif
612 749
613#ifndef ECB_MEMORY_FENCE 750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
764 #endif
765#endif
766
767#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 768 #if !ECB_AVOID_PTHREADS
615 /* 769 /*
616 * if you get undefined symbol references to pthread_mutex_lock, 770 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement 771 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler 772 * the ECB_MEMORY_FENCE operations for your cpu/compiler
… …
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 791#endif
638 792
639/*****************************************************************************/ 793/*****************************************************************************/
640 794
641#define ECB_C99 (__STDC_VERSION__ >= 199901L) 795#if ECB_CPP
642
643#if __cplusplus
644 #define ecb_inline static inline 796 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
647#elif ECB_C99 799#elif ECB_C99
648 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
662 814
663#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
667 820
668#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
669 822
670#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
671 #define ecb_attribute(attrlist) __attribute__(attrlist) 824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
841#else
842 #define ecb_expect(expr,value) (expr)
843#endif
844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else 847#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
680#endif 849#endif
681 850
682/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5) 852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
684 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
685#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
686 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
687#endif 858#endif
688 859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
689#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__)) 878#endif
879
691#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
694 895
695#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 897 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 898 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 899 #define ecb_cold ecb_attribute ((__cold__))
… …
710/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
713 914
714/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4) 916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */ 926 /* no popcountll */
723#else 927#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
725 ecb_function_ int 929 ecb_function_ ecb_const int
726 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
727 { 931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
728 int r = 0; 937 int r = 0;
729 938
730 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
731 940
732#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
742 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
744#endif 953#endif
745 954
746 return r; 955 return r;
956#endif
747 } 957 }
748 958
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
750 ecb_function_ int 960 ecb_function_ ecb_const int
751 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
752 { 962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
753 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
755 } 971 }
756 972
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
758 ecb_function_ int 974 ecb_function_ ecb_const int
759 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
760 { 976 {
761 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101; 980 x *= 0x01010101;
765 981
766 return x >> 24; 982 return x >> 24;
767 } 983 }
768 984
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
770 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
771 { 987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
772 int r = 0; 993 int r = 0;
773 994
774 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
779 1000
780 return r; 1001 return r;
1002#endif
781 } 1003 }
782 1004
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
784 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
785 { 1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
786 int r = 0; 1013 int r = 0;
787 1014
788 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
789 1016
790 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
791 } 1019 }
792#endif 1020#endif
793 1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
796{ 1029{
797 return ( (x * 0x0802U & 0x22110U) 1030 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799} 1032}
800 1033
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
803{ 1036{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8); 1040 x = ( x >> 8 ) | ( x << 8);
808 1041
809 return x; 1042 return x;
810} 1043}
811 1044
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
814{ 1047{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
821 return x; 1054 return x;
822} 1055}
823 1056
824/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */ 1058/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
827ecb_function_ int 1060ecb_function_ ecb_const int
828ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
829{ 1062{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831} 1064}
832 1065
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
841 1074
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850 1083
851#if ECB_GCC_VERSION(4,3) 1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
853 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x) 1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
855#else 1097#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
857 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
858 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
859 { 1101 {
860 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
861 } 1103 }
862 1104
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
864 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
865 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
866 { 1108 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 } 1110 }
869 1111
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
871 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
872 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
873 { 1115 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 } 1117 }
876#endif 1118#endif
877 1119
878#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
879 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
880#else 1122#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
883 ecb_inline void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
884#endif 1126#endif
885 1127
886/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 1130
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
890ecb_inline unsigned char 1132ecb_inline ecb_const uint32_t
891ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
892{ 1134{
893 const uint32_t u = 0x11223344; 1135 /* the union code still generates code under pressure in gcc, */
894 return *(unsigned char *)&u; 1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
895} 1157}
896 1158
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
901 1163
902#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else 1166#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif 1168#endif
907 1169
908#if __cplusplus 1170#if ECB_CPP
909 template<typename T> 1171 template<typename T>
910 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
911 { 1173 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 } 1175 }
… …
930 } 1192 }
931#else 1193#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1195#endif
934 1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
935#endif 1502#endif
936 1503
937/* ECB.H END */ 1504/* ECB.H END */
938 1505
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
960#define inline_size ecb_inline 1527#define inline_size ecb_inline
961 1528
962#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
963# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
964#else 1531#else
965# define inline_speed static noinline 1532# define inline_speed noinline static
966#endif 1533#endif
967 1534
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969 1536
970#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
1017#else 1584#else
1018 1585
1019#include <float.h> 1586#include <float.h>
1020 1587
1021/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
1022static ev_tstamp noinline 1590static ev_tstamp
1023ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
1024{ 1592{
1025 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1059 1627
1060#ifdef __linux 1628#ifdef __linux
1061# include <sys/utsname.h> 1629# include <sys/utsname.h>
1062#endif 1630#endif
1063 1631
1064static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1065ev_linux_version (void) 1634ev_linux_version (void)
1066{ 1635{
1067#ifdef __linux 1636#ifdef __linux
1068 unsigned int v = 0; 1637 unsigned int v = 0;
1069 struct utsname buf; 1638 struct utsname buf;
… …
1098} 1667}
1099 1668
1100/*****************************************************************************/ 1669/*****************************************************************************/
1101 1670
1102#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1103static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1104ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1105{ 1675{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1107} 1677}
1108#endif 1678#endif
1109 1679
1110static void (*syserr_cb)(const char *msg) EV_THROW; 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1111 1681
1112void ecb_cold 1682ecb_cold
1683void
1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1114{ 1685{
1115 syserr_cb = cb; 1686 syserr_cb = cb;
1116} 1687}
1117 1688
1118static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1119ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1120{ 1692{
1121 if (!msg) 1693 if (!msg)
1122 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1123 1695
… …
1136 abort (); 1708 abort ();
1137 } 1709 }
1138} 1710}
1139 1711
1140static void * 1712static void *
1141ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
1142{ 1714{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
1147 * implement realloc (x, 0) (as required by both ansi c-89 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
1148 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
1149 */ 1720 */
1150 1721
1151 if (size) 1722 if (size)
1152 return realloc (ptr, size); 1723 return realloc (ptr, size);
1153 1724
1154 free (ptr); 1725 free (ptr);
1155 return 0; 1726 return 0;
1156#endif
1157} 1727}
1158 1728
1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160 1730
1161void ecb_cold 1731ecb_cold
1732void
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1163{ 1734{
1164 alloc = cb; 1735 alloc = cb;
1165} 1736}
1166 1737
1167inline_speed void * 1738inline_speed void *
… …
1375 } 1946 }
1376 1947
1377 return ncur; 1948 return ncur;
1378} 1949}
1379 1950
1380static void * noinline ecb_cold 1951noinline ecb_cold
1952static void *
1381array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
1382{ 1954{
1383 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
1384 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
1385} 1957}
… …
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1389 1961
1390#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
1391 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
1392 { \ 1964 { \
1393 int ecb_unused ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
1394 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
1395 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
1396 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
1397 } 1969 }
1398 1970
… …
1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1411 1983
1412/*****************************************************************************/ 1984/*****************************************************************************/
1413 1985
1414/* dummy callback for pending events */ 1986/* dummy callback for pending events */
1415static void noinline 1987noinline
1988static void
1416pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 1990{
1418} 1991}
1419 1992
1420void noinline 1993noinline
1994void
1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1422{ 1996{
1423 W w_ = (W)w; 1997 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
1425 1999
… …
1430 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
1433 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
1434 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
1435} 2011}
1436 2012
1437inline_speed void 2013inline_speed void
1438feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
1439{ 2015{
… …
1553 2129
1554 fdchangecnt = 0; 2130 fdchangecnt = 0;
1555} 2131}
1556 2132
1557/* something about the given fd changed */ 2133/* something about the given fd changed */
1558inline_size void 2134inline_size
2135void
1559fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1560{ 2137{
1561 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1562 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1563 2140
… …
1568 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1569 } 2146 }
1570} 2147}
1571 2148
1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1573inline_speed void ecb_cold 2150inline_speed ecb_cold void
1574fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1575{ 2152{
1576 ev_io *w; 2153 ev_io *w;
1577 2154
1578 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1582 } 2159 }
1583} 2160}
1584 2161
1585/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1586inline_size int ecb_cold 2163inline_size ecb_cold int
1587fd_valid (int fd) 2164fd_valid (int fd)
1588{ 2165{
1589#ifdef _WIN32 2166#ifdef _WIN32
1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1591#else 2168#else
1592 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1593#endif 2170#endif
1594} 2171}
1595 2172
1596/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1597static void noinline ecb_cold 2174noinline ecb_cold
2175static void
1598fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1599{ 2177{
1600 int fd; 2178 int fd;
1601 2179
1602 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1604 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1605 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1606} 2184}
1607 2185
1608/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1609static void noinline ecb_cold 2187noinline ecb_cold
2188static void
1610fd_enomem (EV_P) 2189fd_enomem (EV_P)
1611{ 2190{
1612 int fd; 2191 int fd;
1613 2192
1614 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1618 break; 2197 break;
1619 } 2198 }
1620} 2199}
1621 2200
1622/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1623static void noinline 2202noinline
2203static void
1624fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1625{ 2205{
1626 int fd; 2206 int fd;
1627 2207
1628 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1809 2389
1810/*****************************************************************************/ 2390/*****************************************************************************/
1811 2391
1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1813 2393
1814static void noinline ecb_cold 2394noinline ecb_cold
2395static void
1815evpipe_init (EV_P) 2396evpipe_init (EV_P)
1816{ 2397{
1817 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1818 { 2399 {
2400 int fds [2];
2401
1819# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1820 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1821 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1822 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1823 2407
1824 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1825 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1826 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1827 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1828 ev_io_set (&pipe_w, evfd, EV_READ); 2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
2440inline_speed void
2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2442{
2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2444
2445 if (expect_true (*flag))
2446 return;
2447
2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
2464#if EV_USE_EVENTFD
2465 if (evpipe [0] < 0)
2466 {
2467 uint64_t counter = 1;
2468 write (evpipe [1], &counter, sizeof (uint64_t));
1829 } 2469 }
1830 else 2470 else
1831# endif 2471#endif
1832 { 2472 {
1833 while (pipe (evpipe)) 2473#ifdef _WIN32
1834 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1835 2475 DWORD sent;
1836 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1837 fd_intern (evpipe [1]); 2477 buf.len = 1;
1838 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839 } 2479#else
1840
1841 ev_io_start (EV_A_ &pipe_w);
1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1843 }
1844}
1845
1846inline_speed void
1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1848{
1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1866 old_errno = errno; /* save errno because write will clobber it */
1867
1868#if EV_USE_EVENTFD
1869 if (evfd >= 0)
1870 {
1871 uint64_t counter = 1;
1872 write (evfd, &counter, sizeof (uint64_t));
1873 }
1874 else
1875#endif
1876 {
1877 /* win32 people keep sending patches that change this write() to send() */
1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879 /* so when you think this write should be a send instead, please find out */
1880 /* where your send() is from - it's definitely not the microsoft send, and */
1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1884 write (evpipe [1], &(evpipe [1]), 1); 2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1885 } 2482 }
1886 2483
1887 errno = old_errno; 2484 errno = old_errno;
1888 } 2485 }
1889} 2486}
… …
1896 int i; 2493 int i;
1897 2494
1898 if (revents & EV_READ) 2495 if (revents & EV_READ)
1899 { 2496 {
1900#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1901 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1902 { 2499 {
1903 uint64_t counter; 2500 uint64_t counter;
1904 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1905 } 2502 }
1906 else 2503 else
1907#endif 2504#endif
1908 { 2505 {
1909 char dummy; 2506 char dummy[4];
1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1911 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
1912 } 2517 }
1913 } 2518 }
1914 2519
1915 pipe_write_skipped = 0; 2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916 2523
1917#if EV_SIGNAL_ENABLE 2524#if EV_SIGNAL_ENABLE
1918 if (sig_pending) 2525 if (sig_pending)
1919 { 2526 {
1920 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1921 2530
1922 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1923 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1924 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1925 } 2534 }
… …
1927 2536
1928#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1929 if (async_pending) 2538 if (async_pending)
1930 { 2539 {
1931 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1932 2543
1933 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1934 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1935 { 2546 {
1936 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1937 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938 } 2550 }
1939 } 2551 }
1940#endif 2552#endif
1941} 2553}
… …
1944 2556
1945void 2557void
1946ev_feed_signal (int signum) EV_THROW 2558ev_feed_signal (int signum) EV_THROW
1947{ 2559{
1948#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
1949 EV_P = signals [signum - 1].loop; 2563 EV_A = signals [signum - 1].loop;
1950 2564
1951 if (!EV_A) 2565 if (!EV_A)
1952 return; 2566 return;
1953#endif 2567#endif
1954 2568
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1958 signals [signum - 1].pending = 1; 2569 signals [signum - 1].pending = 1;
1959 evpipe_write (EV_A_ &sig_pending); 2570 evpipe_write (EV_A_ &sig_pending);
1960} 2571}
1961 2572
1962static void 2573static void
… …
1967#endif 2578#endif
1968 2579
1969 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
1970} 2581}
1971 2582
1972void noinline 2583noinline
2584void
1973ev_feed_signal_event (EV_P_ int signum) EV_THROW 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974{ 2586{
1975 WL w; 2587 WL w;
1976 2588
1977 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1978 return; 2590 return;
1979 2591
1980 --signum; 2592 --signum;
1981 2593
1982#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1986 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1987 return; 2599 return;
1988#endif 2600#endif
1989 2601
1990 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1991 2604
1992 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1993 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994} 2607}
1995 2608
… …
2093#endif 2706#endif
2094#if EV_USE_SELECT 2707#if EV_USE_SELECT
2095# include "ev_select.c" 2708# include "ev_select.c"
2096#endif 2709#endif
2097 2710
2098int ecb_cold 2711ecb_cold int
2099ev_version_major (void) EV_THROW 2712ev_version_major (void) EV_THROW
2100{ 2713{
2101 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
2102} 2715}
2103 2716
2104int ecb_cold 2717ecb_cold int
2105ev_version_minor (void) EV_THROW 2718ev_version_minor (void) EV_THROW
2106{ 2719{
2107 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
2108} 2721}
2109 2722
2110/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
2111int inline_size ecb_cold 2724inline_size ecb_cold int
2112enable_secure (void) 2725enable_secure (void)
2113{ 2726{
2114#ifdef _WIN32 2727#ifdef _WIN32
2115 return 0; 2728 return 0;
2116#else 2729#else
2117 return getuid () != geteuid () 2730 return getuid () != geteuid ()
2118 || getgid () != getegid (); 2731 || getgid () != getegid ();
2119#endif 2732#endif
2120} 2733}
2121 2734
2122unsigned int ecb_cold 2735ecb_cold
2736unsigned int
2123ev_supported_backends (void) EV_THROW 2737ev_supported_backends (void) EV_THROW
2124{ 2738{
2125 unsigned int flags = 0; 2739 unsigned int flags = 0;
2126 2740
2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2132 2746
2133 return flags; 2747 return flags;
2134} 2748}
2135 2749
2136unsigned int ecb_cold 2750ecb_cold
2751unsigned int
2137ev_recommended_backends (void) EV_THROW 2752ev_recommended_backends (void) EV_THROW
2138{ 2753{
2139 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
2140 2755
2141#ifndef __NetBSD__ 2756#ifndef __NetBSD__
… …
2153#endif 2768#endif
2154 2769
2155 return flags; 2770 return flags;
2156} 2771}
2157 2772
2158unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2159ev_embeddable_backends (void) EV_THROW 2775ev_embeddable_backends (void) EV_THROW
2160{ 2776{
2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2162 2778
2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2209{ 2825{
2210 return userdata; 2826 return userdata;
2211} 2827}
2212 2828
2213void 2829void
2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2215{ 2831{
2216 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
2217} 2833}
2218 2834
2219void 2835void
… …
2223 acquire_cb = acquire; 2839 acquire_cb = acquire;
2224} 2840}
2225#endif 2841#endif
2226 2842
2227/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
2228static void noinline ecb_cold 2844noinline ecb_cold
2845static void
2229loop_init (EV_P_ unsigned int flags) EV_THROW 2846loop_init (EV_P_ unsigned int flags) EV_THROW
2230{ 2847{
2231 if (!backend) 2848 if (!backend)
2232 { 2849 {
2233 origflags = flags; 2850 origflags = flags;
… …
2279#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
2280 async_pending = 0; 2897 async_pending = 0;
2281#endif 2898#endif
2282 pipe_write_skipped = 0; 2899 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0; 2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
2284#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286#endif 2905#endif
2287#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2318#endif 2937#endif
2319 } 2938 }
2320} 2939}
2321 2940
2322/* free up a loop structure */ 2941/* free up a loop structure */
2323void ecb_cold 2942ecb_cold
2943void
2324ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
2325{ 2945{
2326 int i; 2946 int i;
2327 2947
2328#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2339 EV_INVOKE_PENDING; 2959 EV_INVOKE_PENDING;
2340 } 2960 }
2341#endif 2961#endif
2342 2962
2343#if EV_CHILD_ENABLE 2963#if EV_CHILD_ENABLE
2344 if (ev_is_active (&childev)) 2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345 { 2965 {
2346 ev_ref (EV_A); /* child watcher */ 2966 ev_ref (EV_A); /* child watcher */
2347 ev_signal_stop (EV_A_ &childev); 2967 ev_signal_stop (EV_A_ &childev);
2348 } 2968 }
2349#endif 2969#endif
… …
2351 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
2352 { 2972 {
2353 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
2354 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
2355 2975
2356#if EV_USE_EVENTFD
2357 if (evfd >= 0)
2358 close (evfd);
2359#endif
2360
2361 if (evpipe [0] >= 0)
2362 {
2363 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365 }
2366 } 2978 }
2367 2979
2368#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
2369 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
2370 close (sigfd); 2982 close (sigfd);
… …
2456#endif 3068#endif
2457#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2458 infy_fork (EV_A); 3070 infy_fork (EV_A);
2459#endif 3071#endif
2460 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2461 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
2462 { 3075 {
2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464 3077
2465 ev_ref (EV_A); 3078 ev_ref (EV_A);
2466 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
2467 3080
2468#if EV_USE_EVENTFD
2469 if (evfd >= 0)
2470 close (evfd);
2471#endif
2472
2473 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
2474 {
2475 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
2476 EV_WIN32_CLOSE_FD (evpipe [1]);
2477 }
2478 3083
2479#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2480 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
2481 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
2482 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483#endif
2484 } 3087 }
3088#endif
2485 3089
2486 postfork = 0; 3090 postfork = 0;
2487} 3091}
2488 3092
2489#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
2490 3094
3095ecb_cold
2491struct ev_loop * ecb_cold 3096struct ev_loop *
2492ev_loop_new (unsigned int flags) EV_THROW 3097ev_loop_new (unsigned int flags) EV_THROW
2493{ 3098{
2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2495 3100
2496 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2504} 3109}
2505 3110
2506#endif /* multiplicity */ 3111#endif /* multiplicity */
2507 3112
2508#if EV_VERIFY 3113#if EV_VERIFY
2509static void noinline ecb_cold 3114noinline ecb_cold
3115static void
2510verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
2511{ 3117{
2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2513 3119
2514 if (w->pending) 3120 if (w->pending)
2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2516} 3122}
2517 3123
2518static void noinline ecb_cold 3124noinline ecb_cold
3125static void
2519verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
2520{ 3127{
2521 int i; 3128 int i;
2522 3129
2523 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2528 3135
2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2530 } 3137 }
2531} 3138}
2532 3139
2533static void noinline ecb_cold 3140noinline ecb_cold
3141static void
2534array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
2535{ 3143{
2536 while (cnt--) 3144 while (cnt--)
2537 { 3145 {
2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2545void ecb_cold 3153void ecb_cold
2546ev_verify (EV_P) EV_THROW 3154ev_verify (EV_P) EV_THROW
2547{ 3155{
2548#if EV_VERIFY 3156#if EV_VERIFY
2549 int i; 3157 int i;
2550 WL w; 3158 WL w, w2;
2551 3159
2552 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
2553 3161
2554 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
2555 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
2556 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557 3165
2558 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
2559 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
2560 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
2561 { 3172 {
2562 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
2563 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2564 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565 } 3183 }
3184 }
2566 3185
2567 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
2568 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
2569 3188
2570#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
2616#endif 3235#endif
2617} 3236}
2618#endif 3237#endif
2619 3238
2620#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2621struct ev_loop * ecb_cold 3241struct ev_loop *
2622#else 3242#else
2623int 3243int
2624#endif 3244#endif
2625ev_default_loop (unsigned int flags) EV_THROW 3245ev_default_loop (unsigned int flags) EV_THROW
2626{ 3246{
… …
2651} 3271}
2652 3272
2653void 3273void
2654ev_loop_fork (EV_P) EV_THROW 3274ev_loop_fork (EV_P) EV_THROW
2655{ 3275{
2656 postfork = 1; /* must be in line with ev_default_fork */ 3276 postfork = 1;
2657} 3277}
2658 3278
2659/*****************************************************************************/ 3279/*****************************************************************************/
2660 3280
2661void 3281void
… …
2674 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2675 3295
2676 return count; 3296 return count;
2677} 3297}
2678 3298
2679void noinline 3299noinline
3300void
2680ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2681{ 3302{
2682 int pri; 3303 pendingpri = NUMPRI;
2683 3304
2684 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2685 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2686 { 3310 {
2687 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688 3312
2689 p->w->pending = 0; 3313 p->w->pending = 0;
2690 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2691 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2692 } 3316 }
3317 }
2693} 3318}
2694 3319
2695#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2696/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2697/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2755 } 3380 }
2756} 3381}
2757 3382
2758#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2759 3384
2760static void noinline 3385noinline
3386static void
2761periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
2762{ 3388{
2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2765 3391
… …
2787{ 3413{
2788 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2789 3415
2790 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791 { 3417 {
2792 int feed_count = 0;
2793
2794 do 3418 do
2795 { 3419 {
2796 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2797 3421
2798 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2825 } 3449 }
2826} 3450}
2827 3451
2828/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2829/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2830static void noinline ecb_cold 3454noinline ecb_cold
3455static void
2831periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2832{ 3457{
2833 int i; 3458 int i;
2834 3459
2835 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2848 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2849} 3474}
2850#endif 3475#endif
2851 3476
2852/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2853static void noinline ecb_cold 3478noinline ecb_cold
3479static void
2854timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2855{ 3481{
2856 int i; 3482 int i;
2857 3483
2858 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
3057 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059 3685
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061 3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
3062 if (pipe_write_skipped) 3689 if (pipe_write_skipped)
3063 { 3690 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 } 3693 }
… …
3225 w->active = 0; 3852 w->active = 0;
3226} 3853}
3227 3854
3228/*****************************************************************************/ 3855/*****************************************************************************/
3229 3856
3230void noinline 3857noinline
3858void
3231ev_io_start (EV_P_ ev_io *w) EV_THROW 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
3232{ 3860{
3233 int fd = w->fd; 3861 int fd = w->fd;
3234 3862
3235 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
… …
3242 3870
3243 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
3244 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3245 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
3246 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
3247 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3248 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
3249 3880
3250 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
3251} 3882}
3252 3883
3253void noinline 3884noinline
3885void
3254ev_io_stop (EV_P_ ev_io *w) EV_THROW 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
3255{ 3887{
3256 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
3257 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
3258 return; 3890 return;
… …
3267 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3268 3900
3269 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3270} 3902}
3271 3903
3272void noinline 3904noinline
3905void
3273ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3274{ 3907{
3275 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3276 return; 3909 return;
3277 3910
… …
3291 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3292 3925
3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3294} 3927}
3295 3928
3296void noinline 3929noinline
3930void
3297ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3298{ 3932{
3299 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3300 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3301 return; 3935 return;
… …
3321 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
3322 3956
3323 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3324} 3958}
3325 3959
3326void noinline 3960noinline
3961void
3327ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3328{ 3963{
3329 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3330 3965
3331 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
… …
3355{ 3990{
3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3357} 3992}
3358 3993
3359#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
3360void noinline 3995noinline
3996void
3361ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3362{ 3998{
3363 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3364 return; 4000 return;
3365 4001
… …
3385 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3386 4022
3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3388} 4024}
3389 4025
3390void noinline 4026noinline
4027void
3391ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3392{ 4029{
3393 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3394 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
3395 return; 4032 return;
… …
3413 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3414 4051
3415 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3416} 4053}
3417 4054
3418void noinline 4055noinline
4056void
3419ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3420{ 4058{
3421 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
3422 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
3423 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
… …
3428# define SA_RESTART 0 4066# define SA_RESTART 0
3429#endif 4067#endif
3430 4068
3431#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
3432 4070
3433void noinline 4071noinline
4072void
3434ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3435{ 4074{
3436 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3437 return; 4076 return;
3438 4077
… …
3441#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
3442 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
3443 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3444 4083
3445 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
3446#endif 4086#endif
3447 4087
3448 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3449 4089
3450#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
3509 } 4149 }
3510 4150
3511 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
3512} 4152}
3513 4153
3514void noinline 4154noinline
4155void
3515ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3516{ 4157{
3517 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
3518 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
3519 return; 4160 return;
… …
3595 4236
3596#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3597#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3598#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3599 4240
3600static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3601 4242
3602#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3603 4244
3604/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3605# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606 4247
3607static void noinline 4248noinline
4249static void
3608infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3609{ 4251{
3610 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); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
3611 4256
3612 if (w->wd >= 0) 4257 if (w->wd >= 0)
3613 { 4258 {
3614 struct statfs sfs; 4259 struct statfs sfs;
3615 4260
… …
3619 4264
3620 if (!fs_2625) 4265 if (!fs_2625)
3621 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
3623 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
3624 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
3625 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
3626 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
3627 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
3628 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
3629 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630 else 4281 else
3631 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632 } 4283 }
… …
3667 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3668 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3669 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3670} 4321}
3671 4322
3672static void noinline 4323noinline
4324static void
3673infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3674{ 4326{
3675 int slot; 4327 int slot;
3676 int wd = w->wd; 4328 int wd = w->wd;
3677 4329
… …
3684 4336
3685 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3686 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3687} 4339}
3688 4340
3689static void noinline 4341noinline
4342static void
3690infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3691{ 4344{
3692 if (slot < 0) 4345 if (slot < 0)
3693 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3694 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3730 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3731 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3732 } 4385 }
3733} 4386}
3734 4387
3735inline_size void ecb_cold 4388inline_size ecb_cold
4389void
3736ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3737{ 4391{
3738 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3740 */ 4394 */
… …
3838 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3839 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3840 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3841} 4495}
3842 4496
3843static void noinline 4497noinline
4498static void
3844stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3845{ 4500{
3846 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3847 4502
3848 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
4058 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
4059} 4714}
4060#endif 4715#endif
4061 4716
4062#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
4063void noinline 4718noinline
4719void
4064ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4065{ 4721{
4066 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
4067} 4723}
4068 4724
… …
4365} 5021}
4366 5022
4367/*****************************************************************************/ 5023/*****************************************************************************/
4368 5024
4369#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
4370void ecb_cold 5026ecb_cold
5027void
4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4372{ 5029{
4373 int i, j; 5030 int i, j;
4374 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
4375 5032

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