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Comparing libev/ev.c (file contents):
Revision 1.426 by root, Sun May 6 13:42:10 2012 UTC vs.
Revision 1.483 by root, Tue Jul 31 04:45:58 2018 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
201# include <sys/wait.h> 211# include <sys/wait.h>
202# include <unistd.h> 212# include <unistd.h>
203#else 213#else
204# include <io.h> 214# include <io.h>
205# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
206# include <windows.h> 217# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
209# endif 220# endif
210# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
211#endif 222#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220 223
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
222 225
223/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG 227#if defined EV_NSIG
… …
240#elif defined SIGARRAYSIZE 243#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 245#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 247#else
245# error "unable to find value for NSIG, please report" 248# 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 249#endif
250 250
251#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
253#endif 253#endif
254 254
255#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 258# else
259# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
260# endif 269# endif
261#endif 270#endif
262 271
263#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
354# define EV_USE_4HEAP EV_FEATURE_DATA 363# define EV_USE_4HEAP EV_FEATURE_DATA
355#endif 364#endif
356 365
357#ifndef EV_HEAP_CACHE_AT 366#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 367# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
368#endif
369
370#ifdef __ANDROID__
371/* supposedly, android doesn't typedef fd_mask */
372# undef EV_USE_SELECT
373# define EV_USE_SELECT 0
374/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
375# undef EV_USE_CLOCK_SYSCALL
376# define EV_USE_CLOCK_SYSCALL 0
377#endif
378
379/* aix's poll.h seems to cause lots of trouble */
380#ifdef _AIX
381/* AIX has a completely broken poll.h header */
382# undef EV_USE_POLL
383# define EV_USE_POLL 0
359#endif 384#endif
360 385
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 386/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 387/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 388#if EV_USE_CLOCK_SYSCALL
… …
372# endif 397# endif
373#endif 398#endif
374 399
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 400/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 401
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 402#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 403# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 404# define EV_USE_MONOTONIC 0
386#endif 405#endif
387 406
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 427/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 428# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 429# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 430# define EV_USE_INOTIFY 0
412# endif 431# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 432#endif
418 433
419#if EV_USE_EVENTFD 434#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 435/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 436# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 493/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 494/* ECB.H BEGIN */
480/* 495/*
481 * libecb - http://software.schmorp.de/pkg/libecb 496 * libecb - http://software.schmorp.de/pkg/libecb
482 * 497 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 498 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 499 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 500 * All rights reserved.
486 * 501 *
487 * Redistribution and use in source and binary forms, with or without modifica- 502 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 503 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 517 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 518 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 519 * 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 520 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 521 * OF THE POSSIBILITY OF SUCH DAMAGE.
522 *
523 * Alternatively, the contents of this file may be used under the terms of
524 * the GNU General Public License ("GPL") version 2 or any later version,
525 * in which case the provisions of the GPL are applicable instead of
526 * the above. If you wish to allow the use of your version of this file
527 * only under the terms of the GPL and not to allow others to use your
528 * version of this file under the BSD license, indicate your decision
529 * by deleting the provisions above and replace them with the notice
530 * and other provisions required by the GPL. If you do not delete the
531 * provisions above, a recipient may use your version of this file under
532 * either the BSD or the GPL.
507 */ 533 */
508 534
509#ifndef ECB_H 535#ifndef ECB_H
510#define ECB_H 536#define ECB_H
537
538/* 16 bits major, 16 bits minor */
539#define ECB_VERSION 0x00010005
511 540
512#ifdef _WIN32 541#ifdef _WIN32
513 typedef signed char int8_t; 542 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 543 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 544 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 550 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 551 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 552 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 553 typedef unsigned __int64 uint64_t;
525 #endif 554 #endif
555 #ifdef _WIN64
556 #define ECB_PTRSIZE 8
557 typedef uint64_t uintptr_t;
558 typedef int64_t intptr_t;
559 #else
560 #define ECB_PTRSIZE 4
561 typedef uint32_t uintptr_t;
562 typedef int32_t intptr_t;
563 #endif
526#else 564#else
527 #include <inttypes.h> 565 #include <inttypes.h>
566 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
567 #define ECB_PTRSIZE 8
568 #else
569 #define ECB_PTRSIZE 4
570 #endif
571#endif
572
573#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
574#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
575
576/* work around x32 idiocy by defining proper macros */
577#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
578 #if _ILP32
579 #define ECB_AMD64_X32 1
580 #else
581 #define ECB_AMD64 1
582 #endif
528#endif 583#endif
529 584
530/* many compilers define _GNUC_ to some versions but then only implement 585/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 586 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 587 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 588 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 589 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 590 * an issue with that they should have done it right in the first place.
536 */ 591 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 592#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 593 #define ECB_GCC_VERSION(major,minor) 0
540 #else 594#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 595 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 596#endif
597
598#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
599
600#if __clang__ && defined __has_builtin
601 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
602#else
603 #define ECB_CLANG_BUILTIN(x) 0
604#endif
605
606#if __clang__ && defined __has_extension
607 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
608#else
609 #define ECB_CLANG_EXTENSION(x) 0
610#endif
611
612#define ECB_CPP (__cplusplus+0)
613#define ECB_CPP11 (__cplusplus >= 201103L)
614
615#if ECB_CPP
616 #define ECB_C 0
617 #define ECB_STDC_VERSION 0
618#else
619 #define ECB_C 1
620 #define ECB_STDC_VERSION __STDC_VERSION__
621#endif
622
623#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
624#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
625
626#if ECB_CPP
627 #define ECB_EXTERN_C extern "C"
628 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
629 #define ECB_EXTERN_C_END }
630#else
631 #define ECB_EXTERN_C extern
632 #define ECB_EXTERN_C_BEG
633 #define ECB_EXTERN_C_END
543#endif 634#endif
544 635
545/*****************************************************************************/ 636/*****************************************************************************/
546 637
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 638/* 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 */ 639/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 640
550#if ECB_NO_THREADS 641#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 642 #define ECB_NO_SMP 1
552#endif 643#endif
553 644
554#if ECB_NO_THREADS || ECB_NO_SMP 645#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 646 #define ECB_MEMORY_FENCE do { } while (0)
647#endif
648
649/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
650#if __xlC__ && ECB_CPP
651 #include <builtins.h>
652#endif
653
654#if 1400 <= _MSC_VER
655 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 656#endif
557 657
558#ifndef ECB_MEMORY_FENCE 658#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 659 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 660 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 662 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 663 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 664 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 666 #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 */ 667 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 668 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
670 #elif defined __ARM_ARCH_2__ \
671 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
672 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
673 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
674 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
675 || defined __ARM_ARCH_5TEJ__
676 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 677 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 678 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
679 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 681 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 682 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 684 #elif __aarch64__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
686 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 688 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 689 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 690 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 692 #elif defined __mips__
693 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
694 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 695 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584 #elif defined __alpha__ 696 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
698 #elif defined __hppa__
699 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
701 #elif defined __ia64__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
703 #elif defined __m68k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
705 #elif defined __m88k__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
707 #elif defined __sh__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586 #endif 709 #endif
587 #endif 710 #endif
588#endif 711#endif
589 712
590#ifndef ECB_MEMORY_FENCE 713#ifndef ECB_MEMORY_FENCE
714 #if ECB_GCC_VERSION(4,7)
715 /* see comment below (stdatomic.h) about the C11 memory model. */
716 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
717 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
718 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
719
720 #elif ECB_CLANG_EXTENSION(c_atomic)
721 /* see comment below (stdatomic.h) about the C11 memory model. */
722 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
723 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
724 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
725
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 726 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize () 727 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 728 #elif _MSC_VER >= 1500 /* VC++ 2008 */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 729 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
730 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
731 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
732 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
733 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 734 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 735 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 736 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 737 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 738 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
609 #define ECB_MEMORY_FENCE __sync () 748 #define ECB_MEMORY_FENCE __sync ()
610 #endif 749 #endif
611#endif 750#endif
612 751
613#ifndef ECB_MEMORY_FENCE 752#ifndef ECB_MEMORY_FENCE
753 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
754 /* we assume that these memory fences work on all variables/all memory accesses, */
755 /* not just C11 atomics and atomic accesses */
756 #include <stdatomic.h>
757 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
758 /* any fence other than seq_cst, which isn't very efficient for us. */
759 /* Why that is, we don't know - either the C11 memory model is quite useless */
760 /* for most usages, or gcc and clang have a bug */
761 /* I *currently* lean towards the latter, and inefficiently implement */
762 /* all three of ecb's fences as a seq_cst fence */
763 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
764 /* for all __atomic_thread_fence's except seq_cst */
765 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
766 #endif
767#endif
768
769#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS 770 #if !ECB_AVOID_PTHREADS
615 /* 771 /*
616 * if you get undefined symbol references to pthread_mutex_lock, 772 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement 773 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler 774 * the ECB_MEMORY_FENCE operations for your cpu/compiler
… …
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 792 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif 793#endif
638 794
639/*****************************************************************************/ 795/*****************************************************************************/
640 796
641#define ECB_C99 (__STDC_VERSION__ >= 199901L) 797#if ECB_CPP
642
643#if __cplusplus
644 #define ecb_inline static inline 798 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5) 799#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__ 800 #define ecb_inline static __inline__
647#elif ECB_C99 801#elif ECB_C99
648 #define ecb_inline static inline 802 #define ecb_inline static inline
… …
662 816
663#define ECB_CONCAT_(a, b) a ## b 817#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 818#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a 819#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 820#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
821#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
667 822
668#define ecb_function_ ecb_inline 823#define ecb_function_ ecb_inline
669 824
670#if ECB_GCC_VERSION(3,1) 825#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
671 #define ecb_attribute(attrlist) __attribute__(attrlist) 826 #define ecb_attribute(attrlist) __attribute__ (attrlist)
827#else
828 #define ecb_attribute(attrlist)
829#endif
830
831#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr) 832 #define ecb_is_constant(expr) __builtin_constant_p (expr)
833#else
834 /* possible C11 impl for integral types
835 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
836 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
837
838 #define ecb_is_constant(expr) 0
839#endif
840
841#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 842 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
843#else
844 #define ecb_expect(expr,value) (expr)
845#endif
846
847#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 848 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else 849#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) 850 #define ecb_prefetch(addr,rw,locality)
680#endif 851#endif
681 852
682/* no emulation for ecb_decltype */ 853/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5) 854#if ECB_CPP11
855 // older implementations might have problems with decltype(x)::type, work around it
856 template<class T> struct ecb_decltype_t { typedef T type; };
684 #define ecb_decltype(x) __decltype(x) 857 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
685#elif ECB_GCC_VERSION(3,0) 858#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
686 #define ecb_decltype(x) __typeof(x) 859 #define ecb_decltype(x) __typeof__ (x)
687#endif 860#endif
688 861
862#if _MSC_VER >= 1300
863 #define ecb_deprecated __declspec (deprecated)
864#else
865 #define ecb_deprecated ecb_attribute ((__deprecated__))
866#endif
867
868#if _MSC_VER >= 1500
869 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
870#elif ECB_GCC_VERSION(4,5)
871 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
872#else
873 #define ecb_deprecated_message(msg) ecb_deprecated
874#endif
875
876#if _MSC_VER >= 1400
877 #define ecb_noinline __declspec (noinline)
878#else
689#define ecb_noinline ecb_attribute ((__noinline__)) 879 #define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__)) 880#endif
881
691#define ecb_unused ecb_attribute ((__unused__)) 882#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__)) 883#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__)) 884#define ecb_pure ecb_attribute ((__pure__))
885
886#if ECB_C11 || __IBMC_NORETURN
887 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
888 #define ecb_noreturn _Noreturn
889#elif ECB_CPP11
890 #define ecb_noreturn [[noreturn]]
891#elif _MSC_VER >= 1200
892 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
893 #define ecb_noreturn __declspec (noreturn)
894#else
895 #define ecb_noreturn ecb_attribute ((__noreturn__))
896#endif
694 897
695#if ECB_GCC_VERSION(4,3) 898#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__)) 899 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__)) 900 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__)) 901 #define ecb_cold ecb_attribute ((__cold__))
… …
710/* for compatibility to the rest of the world */ 913/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr) 914#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr) 915#define ecb_unlikely(expr) ecb_expect_false (expr)
713 916
714/* count trailing zero bits and count # of one bits */ 917/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4) 918#if ECB_GCC_VERSION(3,4) \
919 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
920 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
921 && ECB_CLANG_BUILTIN(__builtin_popcount))
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 922 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 923 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 924 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x) 925 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x) 926 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x) 927 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */ 928 /* no popcountll */
723#else 929#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 930 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
725 ecb_function_ int 931 ecb_function_ ecb_const int
726 ecb_ctz32 (uint32_t x) 932 ecb_ctz32 (uint32_t x)
727 { 933 {
934#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
935 unsigned long r;
936 _BitScanForward (&r, x);
937 return (int)r;
938#else
728 int r = 0; 939 int r = 0;
729 940
730 x &= ~x + 1; /* this isolates the lowest bit */ 941 x &= ~x + 1; /* this isolates the lowest bit */
731 942
732#if ECB_branchless_on_i386 943#if ECB_branchless_on_i386
… …
742 if (x & 0xff00ff00) r += 8; 953 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16; 954 if (x & 0xffff0000) r += 16;
744#endif 955#endif
745 956
746 return r; 957 return r;
958#endif
747 } 959 }
748 960
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 961 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
750 ecb_function_ int 962 ecb_function_ ecb_const int
751 ecb_ctz64 (uint64_t x) 963 ecb_ctz64 (uint64_t x)
752 { 964 {
965#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
966 unsigned long r;
967 _BitScanForward64 (&r, x);
968 return (int)r;
969#else
753 int shift = x & 0xffffffffU ? 0 : 32; 970 int shift = x & 0xffffffff ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift; 971 return ecb_ctz32 (x >> shift) + shift;
972#endif
755 } 973 }
756 974
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 975 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
758 ecb_function_ int 976 ecb_function_ ecb_const int
759 ecb_popcount32 (uint32_t x) 977 ecb_popcount32 (uint32_t x)
760 { 978 {
761 x -= (x >> 1) & 0x55555555; 979 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 980 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f; 981 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101; 982 x *= 0x01010101;
765 983
766 return x >> 24; 984 return x >> 24;
767 } 985 }
768 986
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 987 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
770 ecb_function_ int ecb_ld32 (uint32_t x) 988 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
771 { 989 {
990#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
991 unsigned long r;
992 _BitScanReverse (&r, x);
993 return (int)r;
994#else
772 int r = 0; 995 int r = 0;
773 996
774 if (x >> 16) { x >>= 16; r += 16; } 997 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; } 998 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; } 999 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; } 1000 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; } 1001 if (x >> 1) { r += 1; }
779 1002
780 return r; 1003 return r;
1004#endif
781 } 1005 }
782 1006
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
784 ecb_function_ int ecb_ld64 (uint64_t x) 1008 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
785 { 1009 {
1010#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1011 unsigned long r;
1012 _BitScanReverse64 (&r, x);
1013 return (int)r;
1014#else
786 int r = 0; 1015 int r = 0;
787 1016
788 if (x >> 32) { x >>= 32; r += 32; } 1017 if (x >> 32) { x >>= 32; r += 32; }
789 1018
790 return r + ecb_ld32 (x); 1019 return r + ecb_ld32 (x);
1020#endif
791 } 1021 }
792#endif 1022#endif
793 1023
1024ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1026ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1027ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1028
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1029ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1030ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
796{ 1031{
797 return ( (x * 0x0802U & 0x22110U) 1032 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1033 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799} 1034}
800 1035
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1036ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1037ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
803{ 1038{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1039 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1040 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1041 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8); 1042 x = ( x >> 8 ) | ( x << 8);
808 1043
809 return x; 1044 return x;
810} 1045}
811 1046
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1047ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1048ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
814{ 1049{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1050 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1051 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1053 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
821 return x; 1056 return x;
822} 1057}
823 1058
824/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1059/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */ 1060/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1061ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
827ecb_function_ int 1062ecb_function_ ecb_const int
828ecb_popcount64 (uint64_t x) 1063ecb_popcount64 (uint64_t x)
829{ 1064{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1065 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831} 1066}
832 1067
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1074ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1075ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
841 1076
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1077ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1078ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1079ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1080ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1081ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1082ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1083ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1084ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850 1085
851#if ECB_GCC_VERSION(4,3) 1086#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1087 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1088 #define ecb_bswap16(x) __builtin_bswap16 (x)
1089 #else
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1090 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1091 #endif
853 #define ecb_bswap32(x) __builtin_bswap32 (x) 1092 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x) 1093 #define ecb_bswap64(x) __builtin_bswap64 (x)
1094#elif _MSC_VER
1095 #include <stdlib.h>
1096 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1097 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1098 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
855#else 1099#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1100 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
857 ecb_function_ uint16_t 1101 ecb_function_ ecb_const uint16_t
858 ecb_bswap16 (uint16_t x) 1102 ecb_bswap16 (uint16_t x)
859 { 1103 {
860 return ecb_rotl16 (x, 8); 1104 return ecb_rotl16 (x, 8);
861 } 1105 }
862 1106
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1107 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
864 ecb_function_ uint32_t 1108 ecb_function_ ecb_const uint32_t
865 ecb_bswap32 (uint32_t x) 1109 ecb_bswap32 (uint32_t x)
866 { 1110 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1111 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 } 1112 }
869 1113
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1114 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
871 ecb_function_ uint64_t 1115 ecb_function_ ecb_const uint64_t
872 ecb_bswap64 (uint64_t x) 1116 ecb_bswap64 (uint64_t x)
873 { 1117 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1118 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 } 1119 }
876#endif 1120#endif
877 1121
878#if ECB_GCC_VERSION(4,5) 1122#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
879 #define ecb_unreachable() __builtin_unreachable () 1123 #define ecb_unreachable() __builtin_unreachable ()
880#else 1124#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1125 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1126 ecb_inline ecb_noreturn void ecb_unreachable (void);
883 ecb_inline void ecb_unreachable (void) { } 1127 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
884#endif 1128#endif
885 1129
886/* try to tell the compiler that some condition is definitely true */ 1130/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1131#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888 1132
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1133ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
890ecb_inline unsigned char 1134ecb_inline ecb_const uint32_t
891ecb_byteorder_helper (void) 1135ecb_byteorder_helper (void)
892{ 1136{
893 const uint32_t u = 0x11223344; 1137 /* the union code still generates code under pressure in gcc, */
894 return *(unsigned char *)&u; 1138 /* but less than using pointers, and always seems to */
1139 /* successfully return a constant. */
1140 /* the reason why we have this horrible preprocessor mess */
1141 /* is to avoid it in all cases, at least on common architectures */
1142 /* or when using a recent enough gcc version (>= 4.6) */
1143#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1144 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1145 #define ECB_LITTLE_ENDIAN 1
1146 return 0x44332211;
1147#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1148 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1149 #define ECB_BIG_ENDIAN 1
1150 return 0x11223344;
1151#else
1152 union
1153 {
1154 uint8_t c[4];
1155 uint32_t u;
1156 } u = { 0x11, 0x22, 0x33, 0x44 };
1157 return u.u;
1158#endif
895} 1159}
896 1160
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_big_endian (void);
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1162ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1163ecb_inline ecb_const ecb_bool ecb_little_endian (void);
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1164ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
901 1165
902#if ECB_GCC_VERSION(3,0) || ECB_C99 1166#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1167 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else 1168#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1169 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif 1170#endif
907 1171
908#if __cplusplus 1172#if ECB_CPP
909 template<typename T> 1173 template<typename T>
910 static inline T ecb_div_rd (T val, T div) 1174 static inline T ecb_div_rd (T val, T div)
911 { 1175 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1176 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 } 1177 }
… …
930 } 1194 }
931#else 1195#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1196 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif 1197#endif
934 1198
1199ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1200ecb_function_ ecb_const uint32_t
1201ecb_binary16_to_binary32 (uint32_t x)
1202{
1203 unsigned int s = (x & 0x8000) << (31 - 15);
1204 int e = (x >> 10) & 0x001f;
1205 unsigned int m = x & 0x03ff;
1206
1207 if (ecb_expect_false (e == 31))
1208 /* infinity or NaN */
1209 e = 255 - (127 - 15);
1210 else if (ecb_expect_false (!e))
1211 {
1212 if (ecb_expect_true (!m))
1213 /* zero, handled by code below by forcing e to 0 */
1214 e = 0 - (127 - 15);
1215 else
1216 {
1217 /* subnormal, renormalise */
1218 unsigned int s = 10 - ecb_ld32 (m);
1219
1220 m = (m << s) & 0x3ff; /* mask implicit bit */
1221 e -= s - 1;
1222 }
1223 }
1224
1225 /* e and m now are normalised, or zero, (or inf or nan) */
1226 e += 127 - 15;
1227
1228 return s | (e << 23) | (m << (23 - 10));
1229}
1230
1231ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1232ecb_function_ ecb_const uint16_t
1233ecb_binary32_to_binary16 (uint32_t x)
1234{
1235 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1236 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1237 unsigned int m = x & 0x007fffff;
1238
1239 x &= 0x7fffffff;
1240
1241 /* if it's within range of binary16 normals, use fast path */
1242 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1243 {
1244 /* mantissa round-to-even */
1245 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1246
1247 /* handle overflow */
1248 if (ecb_expect_false (m >= 0x00800000))
1249 {
1250 m >>= 1;
1251 e += 1;
1252 }
1253
1254 return s | (e << 10) | (m >> (23 - 10));
1255 }
1256
1257 /* handle large numbers and infinity */
1258 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1259 return s | 0x7c00;
1260
1261 /* handle zero, subnormals and small numbers */
1262 if (ecb_expect_true (x < 0x38800000))
1263 {
1264 /* zero */
1265 if (ecb_expect_true (!x))
1266 return s;
1267
1268 /* handle subnormals */
1269
1270 /* too small, will be zero */
1271 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1272 return s;
1273
1274 m |= 0x00800000; /* make implicit bit explicit */
1275
1276 /* very tricky - we need to round to the nearest e (+10) bit value */
1277 {
1278 unsigned int bits = 14 - e;
1279 unsigned int half = (1 << (bits - 1)) - 1;
1280 unsigned int even = (m >> bits) & 1;
1281
1282 /* if this overflows, we will end up with a normalised number */
1283 m = (m + half + even) >> bits;
1284 }
1285
1286 return s | m;
1287 }
1288
1289 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1290 m >>= 13;
1291
1292 return s | 0x7c00 | m | !m;
1293}
1294
1295/*******************************************************************************/
1296/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1297
1298/* basically, everything uses "ieee pure-endian" floating point numbers */
1299/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1300#if 0 \
1301 || __i386 || __i386__ \
1302 || ECB_GCC_AMD64 \
1303 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1304 || defined __s390__ || defined __s390x__ \
1305 || defined __mips__ \
1306 || defined __alpha__ \
1307 || defined __hppa__ \
1308 || defined __ia64__ \
1309 || defined __m68k__ \
1310 || defined __m88k__ \
1311 || defined __sh__ \
1312 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1313 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1314 || defined __aarch64__
1315 #define ECB_STDFP 1
1316 #include <string.h> /* for memcpy */
1317#else
1318 #define ECB_STDFP 0
1319#endif
1320
1321#ifndef ECB_NO_LIBM
1322
1323 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1324
1325 /* only the oldest of old doesn't have this one. solaris. */
1326 #ifdef INFINITY
1327 #define ECB_INFINITY INFINITY
1328 #else
1329 #define ECB_INFINITY HUGE_VAL
1330 #endif
1331
1332 #ifdef NAN
1333 #define ECB_NAN NAN
1334 #else
1335 #define ECB_NAN ECB_INFINITY
1336 #endif
1337
1338 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1339 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1340 #define ecb_frexpf(x,e) frexpf ((x), (e))
1341 #else
1342 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1343 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1344 #endif
1345
1346 /* convert a float to ieee single/binary32 */
1347 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1348 ecb_function_ ecb_const uint32_t
1349 ecb_float_to_binary32 (float x)
1350 {
1351 uint32_t r;
1352
1353 #if ECB_STDFP
1354 memcpy (&r, &x, 4);
1355 #else
1356 /* slow emulation, works for anything but -0 */
1357 uint32_t m;
1358 int e;
1359
1360 if (x == 0e0f ) return 0x00000000U;
1361 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1362 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1363 if (x != x ) return 0x7fbfffffU;
1364
1365 m = ecb_frexpf (x, &e) * 0x1000000U;
1366
1367 r = m & 0x80000000U;
1368
1369 if (r)
1370 m = -m;
1371
1372 if (e <= -126)
1373 {
1374 m &= 0xffffffU;
1375 m >>= (-125 - e);
1376 e = -126;
1377 }
1378
1379 r |= (e + 126) << 23;
1380 r |= m & 0x7fffffU;
1381 #endif
1382
1383 return r;
1384 }
1385
1386 /* converts an ieee single/binary32 to a float */
1387 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1388 ecb_function_ ecb_const float
1389 ecb_binary32_to_float (uint32_t x)
1390 {
1391 float r;
1392
1393 #if ECB_STDFP
1394 memcpy (&r, &x, 4);
1395 #else
1396 /* emulation, only works for normals and subnormals and +0 */
1397 int neg = x >> 31;
1398 int e = (x >> 23) & 0xffU;
1399
1400 x &= 0x7fffffU;
1401
1402 if (e)
1403 x |= 0x800000U;
1404 else
1405 e = 1;
1406
1407 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1408 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1409
1410 r = neg ? -r : r;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* convert a double to ieee double/binary64 */
1417 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1418 ecb_function_ ecb_const uint64_t
1419 ecb_double_to_binary64 (double x)
1420 {
1421 uint64_t r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 8);
1425 #else
1426 /* slow emulation, works for anything but -0 */
1427 uint64_t m;
1428 int e;
1429
1430 if (x == 0e0 ) return 0x0000000000000000U;
1431 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1432 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1433 if (x != x ) return 0X7ff7ffffffffffffU;
1434
1435 m = frexp (x, &e) * 0x20000000000000U;
1436
1437 r = m & 0x8000000000000000;;
1438
1439 if (r)
1440 m = -m;
1441
1442 if (e <= -1022)
1443 {
1444 m &= 0x1fffffffffffffU;
1445 m >>= (-1021 - e);
1446 e = -1022;
1447 }
1448
1449 r |= ((uint64_t)(e + 1022)) << 52;
1450 r |= m & 0xfffffffffffffU;
1451 #endif
1452
1453 return r;
1454 }
1455
1456 /* converts an ieee double/binary64 to a double */
1457 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1458 ecb_function_ ecb_const double
1459 ecb_binary64_to_double (uint64_t x)
1460 {
1461 double r;
1462
1463 #if ECB_STDFP
1464 memcpy (&r, &x, 8);
1465 #else
1466 /* emulation, only works for normals and subnormals and +0 */
1467 int neg = x >> 63;
1468 int e = (x >> 52) & 0x7ffU;
1469
1470 x &= 0xfffffffffffffU;
1471
1472 if (e)
1473 x |= 0x10000000000000U;
1474 else
1475 e = 1;
1476
1477 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1478 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1479
1480 r = neg ? -r : r;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* convert a float to ieee half/binary16 */
1487 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1488 ecb_function_ ecb_const uint16_t
1489 ecb_float_to_binary16 (float x)
1490 {
1491 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1492 }
1493
1494 /* convert an ieee half/binary16 to float */
1495 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1496 ecb_function_ ecb_const float
1497 ecb_binary16_to_float (uint16_t x)
1498 {
1499 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1500 }
1501
1502#endif
1503
935#endif 1504#endif
936 1505
937/* ECB.H END */ 1506/* ECB.H END */
938 1507
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1508#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
960#define inline_size ecb_inline 1529#define inline_size ecb_inline
961 1530
962#if EV_FEATURE_CODE 1531#if EV_FEATURE_CODE
963# define inline_speed ecb_inline 1532# define inline_speed ecb_inline
964#else 1533#else
965# define inline_speed static noinline 1534# define inline_speed noinline static
966#endif 1535#endif
967 1536
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1537#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969 1538
970#if EV_MINPRI == EV_MAXPRI 1539#if EV_MINPRI == EV_MAXPRI
… …
1017#else 1586#else
1018 1587
1019#include <float.h> 1588#include <float.h>
1020 1589
1021/* a floor() replacement function, should be independent of ev_tstamp type */ 1590/* a floor() replacement function, should be independent of ev_tstamp type */
1591noinline
1022static ev_tstamp noinline 1592static ev_tstamp
1023ev_floor (ev_tstamp v) 1593ev_floor (ev_tstamp v)
1024{ 1594{
1025 /* the choice of shift factor is not terribly important */ 1595 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1596#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1597 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1059 1629
1060#ifdef __linux 1630#ifdef __linux
1061# include <sys/utsname.h> 1631# include <sys/utsname.h>
1062#endif 1632#endif
1063 1633
1064static unsigned int noinline ecb_cold 1634noinline ecb_cold
1635static unsigned int
1065ev_linux_version (void) 1636ev_linux_version (void)
1066{ 1637{
1067#ifdef __linux 1638#ifdef __linux
1068 unsigned int v = 0; 1639 unsigned int v = 0;
1069 struct utsname buf; 1640 struct utsname buf;
… …
1098} 1669}
1099 1670
1100/*****************************************************************************/ 1671/*****************************************************************************/
1101 1672
1102#if EV_AVOID_STDIO 1673#if EV_AVOID_STDIO
1103static void noinline ecb_cold 1674noinline ecb_cold
1675static void
1104ev_printerr (const char *msg) 1676ev_printerr (const char *msg)
1105{ 1677{
1106 write (STDERR_FILENO, msg, strlen (msg)); 1678 write (STDERR_FILENO, msg, strlen (msg));
1107} 1679}
1108#endif 1680#endif
1109 1681
1110static void (*syserr_cb)(const char *msg) EV_THROW; 1682static void (*syserr_cb)(const char *msg) EV_THROW;
1111 1683
1112void ecb_cold 1684ecb_cold
1685void
1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW 1686ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1114{ 1687{
1115 syserr_cb = cb; 1688 syserr_cb = cb;
1116} 1689}
1117 1690
1118static void noinline ecb_cold 1691noinline ecb_cold
1692static void
1119ev_syserr (const char *msg) 1693ev_syserr (const char *msg)
1120{ 1694{
1121 if (!msg) 1695 if (!msg)
1122 msg = "(libev) system error"; 1696 msg = "(libev) system error";
1123 1697
… …
1136 abort (); 1710 abort ();
1137 } 1711 }
1138} 1712}
1139 1713
1140static void * 1714static void *
1141ev_realloc_emul (void *ptr, long size) 1715ev_realloc_emul (void *ptr, long size) EV_THROW
1142{ 1716{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
1146 /* some systems, notably openbsd and darwin, fail to properly 1717 /* some systems, notably openbsd and darwin, fail to properly
1147 * implement realloc (x, 0) (as required by both ansi c-89 and 1718 * implement realloc (x, 0) (as required by both ansi c-89 and
1148 * the single unix specification, so work around them here. 1719 * the single unix specification, so work around them here.
1720 * recently, also (at least) fedora and debian started breaking it,
1721 * despite documenting it otherwise.
1149 */ 1722 */
1150 1723
1151 if (size) 1724 if (size)
1152 return realloc (ptr, size); 1725 return realloc (ptr, size);
1153 1726
1154 free (ptr); 1727 free (ptr);
1155 return 0; 1728 return 0;
1156#endif
1157} 1729}
1158 1730
1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1731static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160 1732
1161void ecb_cold 1733ecb_cold
1734void
1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW 1735ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1163{ 1736{
1164 alloc = cb; 1737 alloc = cb;
1165} 1738}
1166 1739
1167inline_speed void * 1740inline_speed void *
… …
1335 struct timespec ts; 1908 struct timespec ts;
1336 1909
1337 EV_TS_SET (ts, delay); 1910 EV_TS_SET (ts, delay);
1338 nanosleep (&ts, 0); 1911 nanosleep (&ts, 0);
1339#elif defined _WIN32 1912#elif defined _WIN32
1913 /* maybe this should round up, as ms is very low resolution */
1914 /* compared to select (µs) or nanosleep (ns) */
1340 Sleep ((unsigned long)(delay * 1e3)); 1915 Sleep ((unsigned long)(delay * 1e3));
1341#else 1916#else
1342 struct timeval tv; 1917 struct timeval tv;
1343 1918
1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1919 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1375 } 1950 }
1376 1951
1377 return ncur; 1952 return ncur;
1378} 1953}
1379 1954
1380static void * noinline ecb_cold 1955noinline ecb_cold
1956static void *
1381array_realloc (int elem, void *base, int *cur, int cnt) 1957array_realloc (int elem, void *base, int *cur, int cnt)
1382{ 1958{
1383 *cur = array_nextsize (elem, *cur, cnt); 1959 *cur = array_nextsize (elem, *cur, cnt);
1384 return ev_realloc (base, elem * *cur); 1960 return ev_realloc (base, elem * *cur);
1385} 1961}
… …
1388 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1389 1965
1390#define array_needsize(type,base,cur,cnt,init) \ 1966#define array_needsize(type,base,cur,cnt,init) \
1391 if (expect_false ((cnt) > (cur))) \ 1967 if (expect_false ((cnt) > (cur))) \
1392 { \ 1968 { \
1393 int ecb_unused ocur_ = (cur); \ 1969 ecb_unused int ocur_ = (cur); \
1394 (base) = (type *)array_realloc \ 1970 (base) = (type *)array_realloc \
1395 (sizeof (type), (base), &(cur), (cnt)); \ 1971 (sizeof (type), (base), &(cur), (cnt)); \
1396 init ((base) + (ocur_), (cur) - ocur_); \ 1972 init ((base) + (ocur_), (cur) - ocur_); \
1397 } 1973 }
1398 1974
… …
1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1411 1987
1412/*****************************************************************************/ 1988/*****************************************************************************/
1413 1989
1414/* dummy callback for pending events */ 1990/* dummy callback for pending events */
1415static void noinline 1991noinline
1992static void
1416pendingcb (EV_P_ ev_prepare *w, int revents) 1993pendingcb (EV_P_ ev_prepare *w, int revents)
1417{ 1994{
1418} 1995}
1419 1996
1420void noinline 1997noinline
1998void
1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW 1999ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1422{ 2000{
1423 W w_ = (W)w; 2001 W w_ = (W)w;
1424 int pri = ABSPRI (w_); 2002 int pri = ABSPRI (w_);
1425 2003
… …
1555 2133
1556 fdchangecnt = 0; 2134 fdchangecnt = 0;
1557} 2135}
1558 2136
1559/* something about the given fd changed */ 2137/* something about the given fd changed */
1560inline_size void 2138inline_size
2139void
1561fd_change (EV_P_ int fd, int flags) 2140fd_change (EV_P_ int fd, int flags)
1562{ 2141{
1563 unsigned char reify = anfds [fd].reify; 2142 unsigned char reify = anfds [fd].reify;
1564 anfds [fd].reify |= flags; 2143 anfds [fd].reify |= flags;
1565 2144
… …
1570 fdchanges [fdchangecnt - 1] = fd; 2149 fdchanges [fdchangecnt - 1] = fd;
1571 } 2150 }
1572} 2151}
1573 2152
1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2153/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1575inline_speed void ecb_cold 2154inline_speed ecb_cold void
1576fd_kill (EV_P_ int fd) 2155fd_kill (EV_P_ int fd)
1577{ 2156{
1578 ev_io *w; 2157 ev_io *w;
1579 2158
1580 while ((w = (ev_io *)anfds [fd].head)) 2159 while ((w = (ev_io *)anfds [fd].head))
… …
1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2162 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1584 } 2163 }
1585} 2164}
1586 2165
1587/* check whether the given fd is actually valid, for error recovery */ 2166/* check whether the given fd is actually valid, for error recovery */
1588inline_size int ecb_cold 2167inline_size ecb_cold int
1589fd_valid (int fd) 2168fd_valid (int fd)
1590{ 2169{
1591#ifdef _WIN32 2170#ifdef _WIN32
1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2171 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1593#else 2172#else
1594 return fcntl (fd, F_GETFD) != -1; 2173 return fcntl (fd, F_GETFD) != -1;
1595#endif 2174#endif
1596} 2175}
1597 2176
1598/* called on EBADF to verify fds */ 2177/* called on EBADF to verify fds */
1599static void noinline ecb_cold 2178noinline ecb_cold
2179static void
1600fd_ebadf (EV_P) 2180fd_ebadf (EV_P)
1601{ 2181{
1602 int fd; 2182 int fd;
1603 2183
1604 for (fd = 0; fd < anfdmax; ++fd) 2184 for (fd = 0; fd < anfdmax; ++fd)
… …
1606 if (!fd_valid (fd) && errno == EBADF) 2186 if (!fd_valid (fd) && errno == EBADF)
1607 fd_kill (EV_A_ fd); 2187 fd_kill (EV_A_ fd);
1608} 2188}
1609 2189
1610/* called on ENOMEM in select/poll to kill some fds and retry */ 2190/* called on ENOMEM in select/poll to kill some fds and retry */
1611static void noinline ecb_cold 2191noinline ecb_cold
2192static void
1612fd_enomem (EV_P) 2193fd_enomem (EV_P)
1613{ 2194{
1614 int fd; 2195 int fd;
1615 2196
1616 for (fd = anfdmax; fd--; ) 2197 for (fd = anfdmax; fd--; )
… …
1620 break; 2201 break;
1621 } 2202 }
1622} 2203}
1623 2204
1624/* usually called after fork if backend needs to re-arm all fds from scratch */ 2205/* usually called after fork if backend needs to re-arm all fds from scratch */
1625static void noinline 2206noinline
2207static void
1626fd_rearm_all (EV_P) 2208fd_rearm_all (EV_P)
1627{ 2209{
1628 int fd; 2210 int fd;
1629 2211
1630 for (fd = 0; fd < anfdmax; ++fd) 2212 for (fd = 0; fd < anfdmax; ++fd)
… …
1811 2393
1812/*****************************************************************************/ 2394/*****************************************************************************/
1813 2395
1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2396#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1815 2397
1816static void noinline ecb_cold 2398noinline ecb_cold
2399static void
1817evpipe_init (EV_P) 2400evpipe_init (EV_P)
1818{ 2401{
1819 if (!ev_is_active (&pipe_w)) 2402 if (!ev_is_active (&pipe_w))
1820 { 2403 {
2404 int fds [2];
2405
1821# if EV_USE_EVENTFD 2406# if EV_USE_EVENTFD
2407 fds [0] = -1;
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2408 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL) 2409 if (fds [1] < 0 && errno == EINVAL)
1824 evfd = eventfd (0, 0); 2410 fds [1] = eventfd (0, 0);
1825 2411
1826 if (evfd >= 0) 2412 if (fds [1] < 0)
2413# endif
1827 { 2414 {
2415 while (pipe (fds))
2416 ev_syserr ("(libev) error creating signal/async pipe");
2417
2418 fd_intern (fds [0]);
2419 }
2420
1828 evpipe [0] = -1; 2421 evpipe [0] = fds [0];
1829 fd_intern (evfd); /* doing it twice doesn't hurt */ 2422
1830 ev_io_set (&pipe_w, evfd, EV_READ); 2423 if (evpipe [1] < 0)
2424 evpipe [1] = fds [1]; /* first call, set write fd */
2425 else
2426 {
2427 /* on subsequent calls, do not change evpipe [1] */
2428 /* so that evpipe_write can always rely on its value. */
2429 /* this branch does not do anything sensible on windows, */
2430 /* so must not be executed on windows */
2431
2432 dup2 (fds [1], evpipe [1]);
2433 close (fds [1]);
2434 }
2435
2436 fd_intern (evpipe [1]);
2437
2438 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2439 ev_io_start (EV_A_ &pipe_w);
2440 ev_unref (EV_A); /* watcher should not keep loop alive */
2441 }
2442}
2443
2444inline_speed void
2445evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2446{
2447 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2448
2449 if (expect_true (*flag))
2450 return;
2451
2452 *flag = 1;
2453 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2454
2455 pipe_write_skipped = 1;
2456
2457 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2458
2459 if (pipe_write_wanted)
2460 {
2461 int old_errno;
2462
2463 pipe_write_skipped = 0;
2464 ECB_MEMORY_FENCE_RELEASE;
2465
2466 old_errno = errno; /* save errno because write will clobber it */
2467
2468#if EV_USE_EVENTFD
2469 if (evpipe [0] < 0)
2470 {
2471 uint64_t counter = 1;
2472 write (evpipe [1], &counter, sizeof (uint64_t));
1831 } 2473 }
1832 else 2474 else
1833# endif 2475#endif
1834 { 2476 {
1835 while (pipe (evpipe)) 2477#ifdef _WIN32
1836 ev_syserr ("(libev) error creating signal/async pipe"); 2478 WSABUF buf;
1837 2479 DWORD sent;
1838 fd_intern (evpipe [0]); 2480 buf.buf = &buf;
1839 fd_intern (evpipe [1]); 2481 buf.len = 1;
1840 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2482 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1841 } 2483#else
1842
1843 ev_io_start (EV_A_ &pipe_w);
1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1845 }
1846}
1847
1848inline_speed void
1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1850{
1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1870 old_errno = errno; /* save errno because write will clobber it */
1871
1872#if EV_USE_EVENTFD
1873 if (evfd >= 0)
1874 {
1875 uint64_t counter = 1;
1876 write (evfd, &counter, sizeof (uint64_t));
1877 }
1878 else
1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1888 write (evpipe [1], &(evpipe [1]), 1); 2484 write (evpipe [1], &(evpipe [1]), 1);
2485#endif
1889 } 2486 }
1890 2487
1891 errno = old_errno; 2488 errno = old_errno;
1892 } 2489 }
1893} 2490}
… …
1900 int i; 2497 int i;
1901 2498
1902 if (revents & EV_READ) 2499 if (revents & EV_READ)
1903 { 2500 {
1904#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1905 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1906 { 2503 {
1907 uint64_t counter; 2504 uint64_t counter;
1908 read (evfd, &counter, sizeof (uint64_t)); 2505 read (evpipe [1], &counter, sizeof (uint64_t));
1909 } 2506 }
1910 else 2507 else
1911#endif 2508#endif
1912 { 2509 {
1913 char dummy; 2510 char dummy[4];
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2511#ifdef _WIN32
2512 WSABUF buf;
2513 DWORD recvd;
2514 DWORD flags = 0;
2515 buf.buf = dummy;
2516 buf.len = sizeof (dummy);
2517 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2518#else
1915 read (evpipe [0], &dummy, 1); 2519 read (evpipe [0], &dummy, sizeof (dummy));
2520#endif
1916 } 2521 }
1917 } 2522 }
1918 2523
1919 pipe_write_skipped = 0; 2524 pipe_write_skipped = 0;
1920 2525
… …
1923#if EV_SIGNAL_ENABLE 2528#if EV_SIGNAL_ENABLE
1924 if (sig_pending) 2529 if (sig_pending)
1925 { 2530 {
1926 sig_pending = 0; 2531 sig_pending = 0;
1927 2532
1928 ECB_MEMORY_FENCE_RELEASE; 2533 ECB_MEMORY_FENCE;
1929 2534
1930 for (i = EV_NSIG - 1; i--; ) 2535 for (i = EV_NSIG - 1; i--; )
1931 if (expect_false (signals [i].pending)) 2536 if (expect_false (signals [i].pending))
1932 ev_feed_signal_event (EV_A_ i + 1); 2537 ev_feed_signal_event (EV_A_ i + 1);
1933 } 2538 }
… …
1936#if EV_ASYNC_ENABLE 2541#if EV_ASYNC_ENABLE
1937 if (async_pending) 2542 if (async_pending)
1938 { 2543 {
1939 async_pending = 0; 2544 async_pending = 0;
1940 2545
1941 ECB_MEMORY_FENCE_RELEASE; 2546 ECB_MEMORY_FENCE;
1942 2547
1943 for (i = asynccnt; i--; ) 2548 for (i = asynccnt; i--; )
1944 if (asyncs [i]->sent) 2549 if (asyncs [i]->sent)
1945 { 2550 {
1946 asyncs [i]->sent = 0; 2551 asyncs [i]->sent = 0;
2552 ECB_MEMORY_FENCE_RELEASE;
1947 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2553 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1948 } 2554 }
1949 } 2555 }
1950#endif 2556#endif
1951} 2557}
… …
1954 2560
1955void 2561void
1956ev_feed_signal (int signum) EV_THROW 2562ev_feed_signal (int signum) EV_THROW
1957{ 2563{
1958#if EV_MULTIPLICITY 2564#if EV_MULTIPLICITY
2565 EV_P;
2566 ECB_MEMORY_FENCE_ACQUIRE;
1959 EV_P = signals [signum - 1].loop; 2567 EV_A = signals [signum - 1].loop;
1960 2568
1961 if (!EV_A) 2569 if (!EV_A)
1962 return; 2570 return;
1963#endif 2571#endif
1964 2572
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1; 2573 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending); 2574 evpipe_write (EV_A_ &sig_pending);
1970} 2575}
1971 2576
1972static void 2577static void
… …
1977#endif 2582#endif
1978 2583
1979 ev_feed_signal (signum); 2584 ev_feed_signal (signum);
1980} 2585}
1981 2586
1982void noinline 2587noinline
2588void
1983ev_feed_signal_event (EV_P_ int signum) EV_THROW 2589ev_feed_signal_event (EV_P_ int signum) EV_THROW
1984{ 2590{
1985 WL w; 2591 WL w;
1986 2592
1987 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2593 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1988 return; 2594 return;
1989 2595
1990 --signum; 2596 --signum;
1991 2597
1992#if EV_MULTIPLICITY 2598#if EV_MULTIPLICITY
… …
1996 if (expect_false (signals [signum].loop != EV_A)) 2602 if (expect_false (signals [signum].loop != EV_A))
1997 return; 2603 return;
1998#endif 2604#endif
1999 2605
2000 signals [signum].pending = 0; 2606 signals [signum].pending = 0;
2607 ECB_MEMORY_FENCE_RELEASE;
2001 2608
2002 for (w = signals [signum].head; w; w = w->next) 2609 for (w = signals [signum].head; w; w = w->next)
2003 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2610 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2004} 2611}
2005 2612
… …
2103#endif 2710#endif
2104#if EV_USE_SELECT 2711#if EV_USE_SELECT
2105# include "ev_select.c" 2712# include "ev_select.c"
2106#endif 2713#endif
2107 2714
2108int ecb_cold 2715ecb_cold int
2109ev_version_major (void) EV_THROW 2716ev_version_major (void) EV_THROW
2110{ 2717{
2111 return EV_VERSION_MAJOR; 2718 return EV_VERSION_MAJOR;
2112} 2719}
2113 2720
2114int ecb_cold 2721ecb_cold int
2115ev_version_minor (void) EV_THROW 2722ev_version_minor (void) EV_THROW
2116{ 2723{
2117 return EV_VERSION_MINOR; 2724 return EV_VERSION_MINOR;
2118} 2725}
2119 2726
2120/* return true if we are running with elevated privileges and should ignore env variables */ 2727/* return true if we are running with elevated privileges and should ignore env variables */
2121int inline_size ecb_cold 2728inline_size ecb_cold int
2122enable_secure (void) 2729enable_secure (void)
2123{ 2730{
2124#ifdef _WIN32 2731#ifdef _WIN32
2125 return 0; 2732 return 0;
2126#else 2733#else
2127 return getuid () != geteuid () 2734 return getuid () != geteuid ()
2128 || getgid () != getegid (); 2735 || getgid () != getegid ();
2129#endif 2736#endif
2130} 2737}
2131 2738
2132unsigned int ecb_cold 2739ecb_cold
2740unsigned int
2133ev_supported_backends (void) EV_THROW 2741ev_supported_backends (void) EV_THROW
2134{ 2742{
2135 unsigned int flags = 0; 2743 unsigned int flags = 0;
2136 2744
2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2745 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2749 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2142 2750
2143 return flags; 2751 return flags;
2144} 2752}
2145 2753
2146unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2147ev_recommended_backends (void) EV_THROW 2756ev_recommended_backends (void) EV_THROW
2148{ 2757{
2149 unsigned int flags = ev_supported_backends (); 2758 unsigned int flags = ev_supported_backends ();
2150 2759
2151#ifndef __NetBSD__ 2760#ifndef __NetBSD__
… …
2163#endif 2772#endif
2164 2773
2165 return flags; 2774 return flags;
2166} 2775}
2167 2776
2168unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2169ev_embeddable_backends (void) EV_THROW 2779ev_embeddable_backends (void) EV_THROW
2170{ 2780{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2781 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172 2782
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2783 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
… …
2219{ 2829{
2220 return userdata; 2830 return userdata;
2221} 2831}
2222 2832
2223void 2833void
2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2834ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2225{ 2835{
2226 invoke_cb = invoke_pending_cb; 2836 invoke_cb = invoke_pending_cb;
2227} 2837}
2228 2838
2229void 2839void
… …
2233 acquire_cb = acquire; 2843 acquire_cb = acquire;
2234} 2844}
2235#endif 2845#endif
2236 2846
2237/* initialise a loop structure, must be zero-initialised */ 2847/* initialise a loop structure, must be zero-initialised */
2238static void noinline ecb_cold 2848noinline ecb_cold
2849static void
2239loop_init (EV_P_ unsigned int flags) EV_THROW 2850loop_init (EV_P_ unsigned int flags) EV_THROW
2240{ 2851{
2241 if (!backend) 2852 if (!backend)
2242 { 2853 {
2243 origflags = flags; 2854 origflags = flags;
… …
2289#if EV_ASYNC_ENABLE 2900#if EV_ASYNC_ENABLE
2290 async_pending = 0; 2901 async_pending = 0;
2291#endif 2902#endif
2292 pipe_write_skipped = 0; 2903 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0; 2904 pipe_write_wanted = 0;
2905 evpipe [0] = -1;
2906 evpipe [1] = -1;
2294#if EV_USE_INOTIFY 2907#if EV_USE_INOTIFY
2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2908 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2296#endif 2909#endif
2297#if EV_USE_SIGNALFD 2910#if EV_USE_SIGNALFD
2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2911 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2328#endif 2941#endif
2329 } 2942 }
2330} 2943}
2331 2944
2332/* free up a loop structure */ 2945/* free up a loop structure */
2333void ecb_cold 2946ecb_cold
2947void
2334ev_loop_destroy (EV_P) 2948ev_loop_destroy (EV_P)
2335{ 2949{
2336 int i; 2950 int i;
2337 2951
2338#if EV_MULTIPLICITY 2952#if EV_MULTIPLICITY
… …
2349 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2350 } 2964 }
2351#endif 2965#endif
2352 2966
2353#if EV_CHILD_ENABLE 2967#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev)) 2968 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2355 { 2969 {
2356 ev_ref (EV_A); /* child watcher */ 2970 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev); 2971 ev_signal_stop (EV_A_ &childev);
2358 } 2972 }
2359#endif 2973#endif
… …
2361 if (ev_is_active (&pipe_w)) 2975 if (ev_is_active (&pipe_w))
2362 { 2976 {
2363 /*ev_ref (EV_A);*/ 2977 /*ev_ref (EV_A);*/
2364 /*ev_io_stop (EV_A_ &pipe_w);*/ 2978 /*ev_io_stop (EV_A_ &pipe_w);*/
2365 2979
2366#if EV_USE_EVENTFD
2367 if (evfd >= 0)
2368 close (evfd);
2369#endif
2370
2371 if (evpipe [0] >= 0)
2372 {
2373 EV_WIN32_CLOSE_FD (evpipe [0]); 2980 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2374 EV_WIN32_CLOSE_FD (evpipe [1]); 2981 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2375 }
2376 } 2982 }
2377 2983
2378#if EV_USE_SIGNALFD 2984#if EV_USE_SIGNALFD
2379 if (ev_is_active (&sigfd_w)) 2985 if (ev_is_active (&sigfd_w))
2380 close (sigfd); 2986 close (sigfd);
… …
2466#endif 3072#endif
2467#if EV_USE_INOTIFY 3073#if EV_USE_INOTIFY
2468 infy_fork (EV_A); 3074 infy_fork (EV_A);
2469#endif 3075#endif
2470 3076
3077#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2471 if (ev_is_active (&pipe_w)) 3078 if (ev_is_active (&pipe_w) && postfork != 2)
2472 { 3079 {
2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3080 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2474 3081
2475 ev_ref (EV_A); 3082 ev_ref (EV_A);
2476 ev_io_stop (EV_A_ &pipe_w); 3083 ev_io_stop (EV_A_ &pipe_w);
2477 3084
2478#if EV_USE_EVENTFD
2479 if (evfd >= 0)
2480 close (evfd);
2481#endif
2482
2483 if (evpipe [0] >= 0) 3085 if (evpipe [0] >= 0)
2484 {
2485 EV_WIN32_CLOSE_FD (evpipe [0]); 3086 EV_WIN32_CLOSE_FD (evpipe [0]);
2486 EV_WIN32_CLOSE_FD (evpipe [1]);
2487 }
2488 3087
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2490 evpipe_init (EV_A); 3088 evpipe_init (EV_A);
2491 /* now iterate over everything, in case we missed something */ 3089 /* iterate over everything, in case we missed something before */
2492 pipecb (EV_A_ &pipe_w, EV_READ); 3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2493#endif
2494 } 3091 }
3092#endif
2495 3093
2496 postfork = 0; 3094 postfork = 0;
2497} 3095}
2498 3096
2499#if EV_MULTIPLICITY 3097#if EV_MULTIPLICITY
2500 3098
3099ecb_cold
2501struct ev_loop * ecb_cold 3100struct ev_loop *
2502ev_loop_new (unsigned int flags) EV_THROW 3101ev_loop_new (unsigned int flags) EV_THROW
2503{ 3102{
2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2505 3104
2506 memset (EV_A, 0, sizeof (struct ev_loop)); 3105 memset (EV_A, 0, sizeof (struct ev_loop));
… …
2514} 3113}
2515 3114
2516#endif /* multiplicity */ 3115#endif /* multiplicity */
2517 3116
2518#if EV_VERIFY 3117#if EV_VERIFY
2519static void noinline ecb_cold 3118noinline ecb_cold
3119static void
2520verify_watcher (EV_P_ W w) 3120verify_watcher (EV_P_ W w)
2521{ 3121{
2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3122 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2523 3123
2524 if (w->pending) 3124 if (w->pending)
2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3125 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2526} 3126}
2527 3127
2528static void noinline ecb_cold 3128noinline ecb_cold
3129static void
2529verify_heap (EV_P_ ANHE *heap, int N) 3130verify_heap (EV_P_ ANHE *heap, int N)
2530{ 3131{
2531 int i; 3132 int i;
2532 3133
2533 for (i = HEAP0; i < N + HEAP0; ++i) 3134 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2538 3139
2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3140 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2540 } 3141 }
2541} 3142}
2542 3143
2543static void noinline ecb_cold 3144noinline ecb_cold
3145static void
2544array_verify (EV_P_ W *ws, int cnt) 3146array_verify (EV_P_ W *ws, int cnt)
2545{ 3147{
2546 while (cnt--) 3148 while (cnt--)
2547 { 3149 {
2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3150 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2554#if EV_FEATURE_API 3156#if EV_FEATURE_API
2555void ecb_cold 3157void ecb_cold
2556ev_verify (EV_P) EV_THROW 3158ev_verify (EV_P) EV_THROW
2557{ 3159{
2558#if EV_VERIFY 3160#if EV_VERIFY
2559 int i, j; 3161 int i;
2560 WL w, w2; 3162 WL w, w2;
2561 3163
2562 assert (activecnt >= -1); 3164 assert (activecnt >= -1);
2563 3165
2564 assert (fdchangemax >= fdchangecnt); 3166 assert (fdchangemax >= fdchangecnt);
2565 for (i = 0; i < fdchangecnt; ++i) 3167 for (i = 0; i < fdchangecnt; ++i)
2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3168 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2567 3169
2568 assert (anfdmax >= 0); 3170 assert (anfdmax >= 0);
2569 for (i = j = 0; i < anfdmax; ++i) 3171 for (i = 0; i < anfdmax; ++i)
3172 {
3173 int j = 0;
3174
2570 for (w = w2 = anfds [i].head; w; w = w->next) 3175 for (w = w2 = anfds [i].head; w; w = w->next)
2571 { 3176 {
2572 verify_watcher (EV_A_ (W)w); 3177 verify_watcher (EV_A_ (W)w);
2573 3178
2574 if (++j & 1) 3179 if (j++ & 1)
2575 w2 = w2->next; 3180 {
2576
2577 assert (("libev: io watcher list contains a loop", w != w2)); 3181 assert (("libev: io watcher list contains a loop", w != w2));
3182 w2 = w2->next;
3183 }
3184
2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3185 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3186 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2580 } 3187 }
3188 }
2581 3189
2582 assert (timermax >= timercnt); 3190 assert (timermax >= timercnt);
2583 verify_heap (EV_A_ timers, timercnt); 3191 verify_heap (EV_A_ timers, timercnt);
2584 3192
2585#if EV_PERIODIC_ENABLE 3193#if EV_PERIODIC_ENABLE
… …
2631#endif 3239#endif
2632} 3240}
2633#endif 3241#endif
2634 3242
2635#if EV_MULTIPLICITY 3243#if EV_MULTIPLICITY
3244ecb_cold
2636struct ev_loop * ecb_cold 3245struct ev_loop *
2637#else 3246#else
2638int 3247int
2639#endif 3248#endif
2640ev_default_loop (unsigned int flags) EV_THROW 3249ev_default_loop (unsigned int flags) EV_THROW
2641{ 3250{
… …
2666} 3275}
2667 3276
2668void 3277void
2669ev_loop_fork (EV_P) EV_THROW 3278ev_loop_fork (EV_P) EV_THROW
2670{ 3279{
2671 postfork = 1; /* must be in line with ev_default_fork */ 3280 postfork = 1;
2672} 3281}
2673 3282
2674/*****************************************************************************/ 3283/*****************************************************************************/
2675 3284
2676void 3285void
… …
2689 count += pendingcnt [pri]; 3298 count += pendingcnt [pri];
2690 3299
2691 return count; 3300 return count;
2692} 3301}
2693 3302
2694void noinline 3303noinline
3304void
2695ev_invoke_pending (EV_P) 3305ev_invoke_pending (EV_P)
2696{ 3306{
2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3307 pendingpri = NUMPRI;
3308
3309 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3310 {
3311 --pendingpri;
3312
2698 while (pendingcnt [pendingpri]) 3313 while (pendingcnt [pendingpri])
2699 { 3314 {
2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3315 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2701 3316
2702 p->w->pending = 0; 3317 p->w->pending = 0;
2703 EV_CB_INVOKE (p->w, p->events); 3318 EV_CB_INVOKE (p->w, p->events);
2704 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2705 } 3320 }
3321 }
2706} 3322}
2707 3323
2708#if EV_IDLE_ENABLE 3324#if EV_IDLE_ENABLE
2709/* make idle watchers pending. this handles the "call-idle */ 3325/* make idle watchers pending. this handles the "call-idle */
2710/* only when higher priorities are idle" logic */ 3326/* only when higher priorities are idle" logic */
… …
2768 } 3384 }
2769} 3385}
2770 3386
2771#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2772 3388
2773static void noinline 3389noinline
3390static void
2774periodic_recalc (EV_P_ ev_periodic *w) 3391periodic_recalc (EV_P_ ev_periodic *w)
2775{ 3392{
2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3393 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2777 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3394 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2778 3395
… …
2800{ 3417{
2801 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
2802 3419
2803 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3420 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2804 { 3421 {
2805 int feed_count = 0;
2806
2807 do 3422 do
2808 { 3423 {
2809 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3424 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2810 3425
2811 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3426 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2838 } 3453 }
2839} 3454}
2840 3455
2841/* simply recalculate all periodics */ 3456/* simply recalculate all periodics */
2842/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3457/* TODO: maybe ensure that at least one event happens when jumping forward? */
2843static void noinline ecb_cold 3458noinline ecb_cold
3459static void
2844periodics_reschedule (EV_P) 3460periodics_reschedule (EV_P)
2845{ 3461{
2846 int i; 3462 int i;
2847 3463
2848 /* adjust periodics after time jump */ 3464 /* adjust periodics after time jump */
… …
2861 reheap (periodics, periodiccnt); 3477 reheap (periodics, periodiccnt);
2862} 3478}
2863#endif 3479#endif
2864 3480
2865/* adjust all timers by a given offset */ 3481/* adjust all timers by a given offset */
2866static void noinline ecb_cold 3482noinline ecb_cold
3483static void
2867timers_reschedule (EV_P_ ev_tstamp adjust) 3484timers_reschedule (EV_P_ ev_tstamp adjust)
2868{ 3485{
2869 int i; 3486 int i;
2870 3487
2871 for (i = 0; i < timercnt; ++i) 3488 for (i = 0; i < timercnt; ++i)
… …
3070 backend_poll (EV_A_ waittime); 3687 backend_poll (EV_A_ waittime);
3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3688 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3072 3689
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3690 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074 3691
3692 ECB_MEMORY_FENCE_ACQUIRE;
3075 if (pipe_write_skipped) 3693 if (pipe_write_skipped)
3076 { 3694 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3695 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3696 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 } 3697 }
… …
3238 w->active = 0; 3856 w->active = 0;
3239} 3857}
3240 3858
3241/*****************************************************************************/ 3859/*****************************************************************************/
3242 3860
3243void noinline 3861noinline
3862void
3244ev_io_start (EV_P_ ev_io *w) EV_THROW 3863ev_io_start (EV_P_ ev_io *w) EV_THROW
3245{ 3864{
3246 int fd = w->fd; 3865 int fd = w->fd;
3247 3866
3248 if (expect_false (ev_is_active (w))) 3867 if (expect_false (ev_is_active (w)))
… …
3264 w->events &= ~EV__IOFDSET; 3883 w->events &= ~EV__IOFDSET;
3265 3884
3266 EV_FREQUENT_CHECK; 3885 EV_FREQUENT_CHECK;
3267} 3886}
3268 3887
3269void noinline 3888noinline
3889void
3270ev_io_stop (EV_P_ ev_io *w) EV_THROW 3890ev_io_stop (EV_P_ ev_io *w) EV_THROW
3271{ 3891{
3272 clear_pending (EV_A_ (W)w); 3892 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 3893 if (expect_false (!ev_is_active (w)))
3274 return; 3894 return;
… …
3283 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3903 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3284 3904
3285 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
3286} 3906}
3287 3907
3288void noinline 3908noinline
3909void
3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3910ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3290{ 3911{
3291 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
3292 return; 3913 return;
3293 3914
… …
3307 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
3308 3929
3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3930 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3310} 3931}
3311 3932
3312void noinline 3933noinline
3934void
3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3935ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3314{ 3936{
3315 clear_pending (EV_A_ (W)w); 3937 clear_pending (EV_A_ (W)w);
3316 if (expect_false (!ev_is_active (w))) 3938 if (expect_false (!ev_is_active (w)))
3317 return; 3939 return;
… …
3337 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
3338 3960
3339 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
3340} 3962}
3341 3963
3342void noinline 3964noinline
3965void
3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW 3966ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3344{ 3967{
3345 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
3346 3969
3347 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
… …
3371{ 3994{
3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3995 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3373} 3996}
3374 3997
3375#if EV_PERIODIC_ENABLE 3998#if EV_PERIODIC_ENABLE
3376void noinline 3999noinline
4000void
3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4001ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3378{ 4002{
3379 if (expect_false (ev_is_active (w))) 4003 if (expect_false (ev_is_active (w)))
3380 return; 4004 return;
3381 4005
… …
3401 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
3402 4026
3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4027 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3404} 4028}
3405 4029
3406void noinline 4030noinline
4031void
3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4032ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3408{ 4033{
3409 clear_pending (EV_A_ (W)w); 4034 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4035 if (expect_false (!ev_is_active (w)))
3411 return; 4036 return;
… …
3429 ev_stop (EV_A_ (W)w); 4054 ev_stop (EV_A_ (W)w);
3430 4055
3431 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
3432} 4057}
3433 4058
3434void noinline 4059noinline
4060void
3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4061ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3436{ 4062{
3437 /* TODO: use adjustheap and recalculation */ 4063 /* TODO: use adjustheap and recalculation */
3438 ev_periodic_stop (EV_A_ w); 4064 ev_periodic_stop (EV_A_ w);
3439 ev_periodic_start (EV_A_ w); 4065 ev_periodic_start (EV_A_ w);
… …
3444# define SA_RESTART 0 4070# define SA_RESTART 0
3445#endif 4071#endif
3446 4072
3447#if EV_SIGNAL_ENABLE 4073#if EV_SIGNAL_ENABLE
3448 4074
3449void noinline 4075noinline
4076void
3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4077ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3451{ 4078{
3452 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
3453 return; 4080 return;
3454 4081
… …
3457#if EV_MULTIPLICITY 4084#if EV_MULTIPLICITY
3458 assert (("libev: a signal must not be attached to two different loops", 4085 assert (("libev: a signal must not be attached to two different loops",
3459 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4086 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3460 4087
3461 signals [w->signum - 1].loop = EV_A; 4088 signals [w->signum - 1].loop = EV_A;
4089 ECB_MEMORY_FENCE_RELEASE;
3462#endif 4090#endif
3463 4091
3464 EV_FREQUENT_CHECK; 4092 EV_FREQUENT_CHECK;
3465 4093
3466#if EV_USE_SIGNALFD 4094#if EV_USE_SIGNALFD
… …
3525 } 4153 }
3526 4154
3527 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
3528} 4156}
3529 4157
3530void noinline 4158noinline
4159void
3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4160ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3532{ 4161{
3533 clear_pending (EV_A_ (W)w); 4162 clear_pending (EV_A_ (W)w);
3534 if (expect_false (!ev_is_active (w))) 4163 if (expect_false (!ev_is_active (w)))
3535 return; 4164 return;
… …
3611 4240
3612#define DEF_STAT_INTERVAL 5.0074891 4241#define DEF_STAT_INTERVAL 5.0074891
3613#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4242#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3614#define MIN_STAT_INTERVAL 0.1074891 4243#define MIN_STAT_INTERVAL 0.1074891
3615 4244
3616static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4245noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3617 4246
3618#if EV_USE_INOTIFY 4247#if EV_USE_INOTIFY
3619 4248
3620/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4249/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3621# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4250# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3622 4251
3623static void noinline 4252noinline
4253static void
3624infy_add (EV_P_ ev_stat *w) 4254infy_add (EV_P_ ev_stat *w)
3625{ 4255{
3626 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4256 w->wd = inotify_add_watch (fs_fd, w->path,
4257 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4258 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4259 | IN_DONT_FOLLOW | IN_MASK_ADD);
3627 4260
3628 if (w->wd >= 0) 4261 if (w->wd >= 0)
3629 { 4262 {
3630 struct statfs sfs; 4263 struct statfs sfs;
3631 4264
… …
3635 4268
3636 if (!fs_2625) 4269 if (!fs_2625)
3637 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4270 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3638 else if (!statfs (w->path, &sfs) 4271 else if (!statfs (w->path, &sfs)
3639 && (sfs.f_type == 0x1373 /* devfs */ 4272 && (sfs.f_type == 0x1373 /* devfs */
4273 || sfs.f_type == 0x4006 /* fat */
4274 || sfs.f_type == 0x4d44 /* msdos */
3640 || sfs.f_type == 0xEF53 /* ext2/3 */ 4275 || sfs.f_type == 0xEF53 /* ext2/3 */
4276 || sfs.f_type == 0x72b6 /* jffs2 */
4277 || sfs.f_type == 0x858458f6 /* ramfs */
4278 || sfs.f_type == 0x5346544e /* ntfs */
3641 || sfs.f_type == 0x3153464a /* jfs */ 4279 || sfs.f_type == 0x3153464a /* jfs */
4280 || sfs.f_type == 0x9123683e /* btrfs */
3642 || sfs.f_type == 0x52654973 /* reiser3 */ 4281 || sfs.f_type == 0x52654973 /* reiser3 */
3643 || sfs.f_type == 0x01021994 /* tempfs */ 4282 || sfs.f_type == 0x01021994 /* tmpfs */
3644 || sfs.f_type == 0x58465342 /* xfs */)) 4283 || sfs.f_type == 0x58465342 /* xfs */))
3645 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4284 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3646 else 4285 else
3647 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4286 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3648 } 4287 }
… …
3683 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4322 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3684 ev_timer_again (EV_A_ &w->timer); 4323 ev_timer_again (EV_A_ &w->timer);
3685 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4324 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3686} 4325}
3687 4326
3688static void noinline 4327noinline
4328static void
3689infy_del (EV_P_ ev_stat *w) 4329infy_del (EV_P_ ev_stat *w)
3690{ 4330{
3691 int slot; 4331 int slot;
3692 int wd = w->wd; 4332 int wd = w->wd;
3693 4333
… …
3700 4340
3701 /* remove this watcher, if others are watching it, they will rearm */ 4341 /* remove this watcher, if others are watching it, they will rearm */
3702 inotify_rm_watch (fs_fd, wd); 4342 inotify_rm_watch (fs_fd, wd);
3703} 4343}
3704 4344
3705static void noinline 4345noinline
4346static void
3706infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4347infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3707{ 4348{
3708 if (slot < 0) 4349 if (slot < 0)
3709 /* overflow, need to check for all hash slots */ 4350 /* overflow, need to check for all hash slots */
3710 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4351 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3746 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4387 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3747 ofs += sizeof (struct inotify_event) + ev->len; 4388 ofs += sizeof (struct inotify_event) + ev->len;
3748 } 4389 }
3749} 4390}
3750 4391
3751inline_size void ecb_cold 4392inline_size ecb_cold
4393void
3752ev_check_2625 (EV_P) 4394ev_check_2625 (EV_P)
3753{ 4395{
3754 /* kernels < 2.6.25 are borked 4396 /* kernels < 2.6.25 are borked
3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4397 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3756 */ 4398 */
… …
3854 w->attr.st_nlink = 0; 4496 w->attr.st_nlink = 0;
3855 else if (!w->attr.st_nlink) 4497 else if (!w->attr.st_nlink)
3856 w->attr.st_nlink = 1; 4498 w->attr.st_nlink = 1;
3857} 4499}
3858 4500
3859static void noinline 4501noinline
4502static void
3860stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4503stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3861{ 4504{
3862 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4505 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3863 4506
3864 ev_statdata prev = w->attr; 4507 ev_statdata prev = w->attr;
… …
4074 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
4075} 4718}
4076#endif 4719#endif
4077 4720
4078#if EV_EMBED_ENABLE 4721#if EV_EMBED_ENABLE
4079void noinline 4722noinline
4723void
4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4724ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
4081{ 4725{
4082 ev_run (w->other, EVRUN_NOWAIT); 4726 ev_run (w->other, EVRUN_NOWAIT);
4083} 4727}
4084 4728
… …
4381} 5025}
4382 5026
4383/*****************************************************************************/ 5027/*****************************************************************************/
4384 5028
4385#if EV_WALK_ENABLE 5029#if EV_WALK_ENABLE
4386void ecb_cold 5030ecb_cold
5031void
4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5032ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4388{ 5033{
4389 int i, j; 5034 int i, j;
4390 ev_watcher_list *wl, *wn; 5035 ev_watcher_list *wl, *wn;
4391 5036

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