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Comparing libev/ev.c (file contents):
Revision 1.437 by root, Tue May 29 21:03:22 2012 UTC vs.
Revision 1.494 by root, Sun Jun 23 23:28:45 2019 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) 2007-2019 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
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
208# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
210# endif 229# endif
211# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
212#endif 231#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 232
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
223 234
224/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 236#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 254#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 256#else
246# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 258#endif
251 259
252#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
254#endif 262#endif
255 263
256#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 267# else
260# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
261# endif 278# endif
262#endif 279#endif
263 280
264#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 324
308#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 326# define EV_USE_PORT 0
310#endif 327#endif
311 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
312#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 340# else
316# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 380# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 381#endif
357 382
358#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
360#endif 401#endif
361 402
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
… …
373# endif 414# endif
374#endif 415#endif
375 416
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 418
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
387#endif 422#endif
388 423
… …
398 433
399#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 436# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
403# endif 446# endif
404#endif 447#endif
405 448
406#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
407# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
477/* 520/*
478 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
479 * 522 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 525 * All rights reserved.
483 * 526 *
484 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
504 */ 558 */
505 559
506#ifndef ECB_H 560#ifndef ECB_H
507#define ECB_H 561#define ECB_H
508 562
509/* 16 bits major, 16 bits minor */ 563/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 564#define ECB_VERSION 0x00010005
511 565
512#ifdef _WIN32 566#ifdef _WIN32
513 typedef signed char int8_t; 567 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
530 #else 584 #else
531 #define ECB_PTRSIZE 4 585 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 586 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 587 typedef int32_t intptr_t;
534 #endif 588 #endif
535 typedef intptr_t ptrdiff_t;
536#else 589#else
537 #include <inttypes.h> 590 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 592 #define ECB_PTRSIZE 8
540 #else 593 #else
541 #define ECB_PTRSIZE 4 594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
542 #endif 607 #endif
543#endif 608#endif
544 609
545/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 613 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have 614 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place. 615 * an issue with that they should have done it right in the first place.
551 */ 616 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
555 #else 619#else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
557 #endif 621#endif
558#endif
559 622
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 624
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
563#define ECB_CPP (__cplusplus+0) 637#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L) 638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
662#endif
566 663
567/*****************************************************************************/ 664/*****************************************************************************/
568 665
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571 668
572#if ECB_NO_THREADS 669#if ECB_NO_THREADS
573# define ECB_NO_SMP 1 670 #define ECB_NO_SMP 1
574#endif 671#endif
575 672
576#if ECB_NO_SMP 673#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
675#endif
676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
578#endif 684#endif
579 685
580#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__ 688 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 692 #elif ECB_GCC_AMD64
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__ 712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__ 718 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__ 720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
606 #elif defined __alpha__ 724 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__ 726 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__ 729 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
613 #endif 737 #endif
614 #endif 738 #endif
615#endif 739#endif
616 740
617#ifndef ECB_MEMORY_FENCE 741#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7) 742 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */ 743 /* see comment below (stdatomic.h) about the C11 memory model. */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic) 745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
622 /* see above */ 746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize () 755 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
627 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
628 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
629 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
630 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
631 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
632 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
… …
646#ifndef ECB_MEMORY_FENCE 780#ifndef ECB_MEMORY_FENCE
647 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
648 /* we assume that these memory fences work on all variables/all memory accesses, */ 782 /* we assume that these memory fences work on all variables/all memory accesses, */
649 /* not just C11 atomics and atomic accesses */ 783 /* not just C11 atomics and atomic accesses */
650 #include <stdatomic.h> 784 #include <stdatomic.h>
651 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */ 785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
652 /* simple barrier semantics. That means we need to take out thor's hammer. */ 786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
653 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
654 #endif
655 #endif 794 #endif
656#endif 795#endif
657 796
658#ifndef ECB_MEMORY_FENCE 797#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS 798 #if !ECB_AVOID_PTHREADS
… …
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif 821#endif
683 822
684/*****************************************************************************/ 823/*****************************************************************************/
685 824
686#if __cplusplus 825#if ECB_CPP
687 #define ecb_inline static inline 826 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5) 827#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__ 828 #define ecb_inline static __inline__
690#elif ECB_C99 829#elif ECB_C99
691 #define ecb_inline static inline 830 #define ecb_inline static inline
… …
705 844
706#define ECB_CONCAT_(a, b) a ## b 845#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a 847#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
710 850
711#define ecb_function_ ecb_inline 851#define ecb_function_ ecb_inline
712 852
713#if ECB_GCC_VERSION(3,1) 853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
714 #define ecb_attribute(attrlist) __attribute__(attrlist) 854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr) 860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
871#else
872 #define ecb_expect(expr,value) (expr)
873#endif
874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else 877#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality) 878 #define ecb_prefetch(addr,rw,locality)
723#endif 879#endif
724 880
725/* no emulation for ecb_decltype */ 881/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5) 882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
727 #define ecb_decltype(x) __decltype(x) 885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728#elif ECB_GCC_VERSION(3,0) 886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
729 #define ecb_decltype(x) __typeof(x) 887 #define ecb_decltype(x) __typeof__ (x)
730#endif 888#endif
731 889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
732#define ecb_noinline ecb_attribute ((__noinline__)) 907 #define ecb_noinline ecb_attribute ((__noinline__))
908#endif
909
733#define ecb_unused ecb_attribute ((__unused__)) 910#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__)) 911#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__)) 912#define ecb_pure ecb_attribute ((__pure__))
736 913
737#if ECB_C11 914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
738 #define ecb_noreturn _Noreturn 916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
739#else 922#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__)) 923 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif 924#endif
742 925
743#if ECB_GCC_VERSION(4,3) 926#if ECB_GCC_VERSION(4,3)
… …
758/* for compatibility to the rest of the world */ 941/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr) 942#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr) 943#define ecb_unlikely(expr) ecb_expect_false (expr)
761 944
762/* count trailing zero bits and count # of one bits */ 945/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4) 946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x) 953 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x) 954 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x) 955 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */ 956 /* no popcountll */
771#else 957#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773 ecb_function_ int 959 ecb_function_ ecb_const int
774 ecb_ctz32 (uint32_t x) 960 ecb_ctz32 (uint32_t x)
775 { 961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
776 int r = 0; 967 int r = 0;
777 968
778 x &= ~x + 1; /* this isolates the lowest bit */ 969 x &= ~x + 1; /* this isolates the lowest bit */
779 970
780#if ECB_branchless_on_i386 971#if ECB_branchless_on_i386
… …
790 if (x & 0xff00ff00) r += 8; 981 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16; 982 if (x & 0xffff0000) r += 16;
792#endif 983#endif
793 984
794 return r; 985 return r;
986#endif
795 } 987 }
796 988
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798 ecb_function_ int 990 ecb_function_ ecb_const int
799 ecb_ctz64 (uint64_t x) 991 ecb_ctz64 (uint64_t x)
800 { 992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
801 int shift = x & 0xffffffffU ? 0 : 32; 998 int shift = x & 0xffffffff ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift; 999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
803 } 1001 }
804 1002
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806 ecb_function_ int 1004 ecb_function_ ecb_const int
807 ecb_popcount32 (uint32_t x) 1005 ecb_popcount32 (uint32_t x)
808 { 1006 {
809 x -= (x >> 1) & 0x55555555; 1007 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f; 1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101; 1010 x *= 0x01010101;
813 1011
814 return x >> 24; 1012 return x >> 24;
815 } 1013 }
816 1014
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818 ecb_function_ int ecb_ld32 (uint32_t x) 1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819 { 1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
820 int r = 0; 1023 int r = 0;
821 1024
822 if (x >> 16) { x >>= 16; r += 16; } 1025 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; } 1026 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; } 1027 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; } 1028 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; } 1029 if (x >> 1) { r += 1; }
827 1030
828 return r; 1031 return r;
1032#endif
829 } 1033 }
830 1034
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832 ecb_function_ int ecb_ld64 (uint64_t x) 1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833 { 1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
834 int r = 0; 1043 int r = 0;
835 1044
836 if (x >> 32) { x >>= 32; r += 32; } 1045 if (x >> 32) { x >>= 32; r += 32; }
837 1046
838 return r + ecb_ld32 (x); 1047 return r + ecb_ld32 (x);
1048#endif
839 } 1049 }
840#endif 1050#endif
841 1051
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846 1056
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849{ 1059{
850 return ( (x * 0x0802U & 0x22110U) 1060 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852} 1062}
853 1063
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856{ 1066{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8); 1070 x = ( x >> 8 ) | ( x << 8);
861 1071
862 return x; 1072 return x;
863} 1073}
864 1074
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867{ 1077{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
874 return x; 1084 return x;
875} 1085}
876 1086
877/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */ 1088/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880ecb_function_ int 1090ecb_function_ ecb_const int
881ecb_popcount64 (uint64_t x) 1091ecb_popcount64 (uint64_t x)
882{ 1092{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884} 1094}
885 1095
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
894 1104
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1105ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1106ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1107ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1108ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903 1113
904#if ECB_GCC_VERSION(4,3) 1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
906 #define ecb_bswap32(x) __builtin_bswap32 (x) 1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x) 1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
908#else 1127#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910 ecb_function_ uint16_t 1129 ecb_function_ ecb_const uint16_t
911 ecb_bswap16 (uint16_t x) 1130 ecb_bswap16 (uint16_t x)
912 { 1131 {
913 return ecb_rotl16 (x, 8); 1132 return ecb_rotl16 (x, 8);
914 } 1133 }
915 1134
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917 ecb_function_ uint32_t 1136 ecb_function_ ecb_const uint32_t
918 ecb_bswap32 (uint32_t x) 1137 ecb_bswap32 (uint32_t x)
919 { 1138 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 } 1140 }
922 1141
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924 ecb_function_ uint64_t 1143 ecb_function_ ecb_const uint64_t
925 ecb_bswap64 (uint64_t x) 1144 ecb_bswap64 (uint64_t x)
926 { 1145 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 } 1147 }
929#endif 1148#endif
930 1149
931#if ECB_GCC_VERSION(4,5) 1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
932 #define ecb_unreachable() __builtin_unreachable () 1151 #define ecb_unreachable() __builtin_unreachable ()
933#else 1152#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
936 ecb_inline void ecb_unreachable (void) { } 1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937#endif 1156#endif
938 1157
939/* try to tell the compiler that some condition is definitely true */ 1158/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941 1160
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
943ecb_inline unsigned char 1162ecb_inline ecb_const uint32_t
944ecb_byteorder_helper (void) 1163ecb_byteorder_helper (void)
945{ 1164{
946 const uint32_t u = 0x11223344; 1165 /* the union code still generates code under pressure in gcc, */
947 return *(unsigned char *)&u; 1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
948} 1187}
949 1188
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
954 1193
955#if ECB_GCC_VERSION(3,0) || ECB_C99 1194#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else 1196#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif 1198#endif
960 1199
961#if __cplusplus 1200#if ECB_CPP
962 template<typename T> 1201 template<typename T>
963 static inline T ecb_div_rd (T val, T div) 1202 static inline T ecb_div_rd (T val, T div)
964 { 1203 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 } 1205 }
… …
983 } 1222 }
984#else 1223#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif 1225#endif
987 1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
988#endif 1532#endif
989 1533
990/* ECB.H END */ 1534/* ECB.H END */
991 1535
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
1013#define inline_size ecb_inline 1557#define inline_size ecb_inline
1014 1558
1015#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline 1560# define inline_speed ecb_inline
1017#else 1561#else
1018# define inline_speed static noinline 1562# define inline_speed noinline static
1019#endif 1563#endif
1020 1564
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022 1566
1023#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
1025#else 1569#else
1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif 1571#endif
1028 1572
1029#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
1030#define EMPTY2(a,b) /* used to suppress some warnings */
1031 1574
1032typedef ev_watcher *W; 1575typedef ev_watcher *W;
1033typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
1034typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
1035 1578
… …
1060# include "ev_win32.c" 1603# include "ev_win32.c"
1061#endif 1604#endif
1062 1605
1063/*****************************************************************************/ 1606/*****************************************************************************/
1064 1607
1608#if EV_USE_LINUXAIO
1609# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1610#endif
1611
1065/* define a suitable floor function (only used by periodics atm) */ 1612/* define a suitable floor function (only used by periodics atm) */
1066 1613
1067#if EV_USE_FLOOR 1614#if EV_USE_FLOOR
1068# include <math.h> 1615# include <math.h>
1069# define ev_floor(v) floor (v) 1616# define ev_floor(v) floor (v)
1070#else 1617#else
1071 1618
1072#include <float.h> 1619#include <float.h>
1073 1620
1074/* a floor() replacement function, should be independent of ev_tstamp type */ 1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
1075static ev_tstamp noinline 1623static ev_tstamp
1076ev_floor (ev_tstamp v) 1624ev_floor (ev_tstamp v)
1077{ 1625{
1078 /* the choice of shift factor is not terribly important */ 1626 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1112 1660
1113#ifdef __linux 1661#ifdef __linux
1114# include <sys/utsname.h> 1662# include <sys/utsname.h>
1115#endif 1663#endif
1116 1664
1117static unsigned int noinline ecb_cold 1665noinline ecb_cold
1666static unsigned int
1118ev_linux_version (void) 1667ev_linux_version (void)
1119{ 1668{
1120#ifdef __linux 1669#ifdef __linux
1121 unsigned int v = 0; 1670 unsigned int v = 0;
1122 struct utsname buf; 1671 struct utsname buf;
… …
1151} 1700}
1152 1701
1153/*****************************************************************************/ 1702/*****************************************************************************/
1154 1703
1155#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1705noinline ecb_cold
1706static void
1157ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
1158{ 1708{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
1160} 1710}
1161#endif 1711#endif
1162 1712
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1164 1714
1165void ecb_cold 1715ecb_cold
1716void
1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1167{ 1718{
1168 syserr_cb = cb; 1719 syserr_cb = cb;
1169} 1720}
1170 1721
1171static void noinline ecb_cold 1722noinline ecb_cold
1723static void
1172ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
1173{ 1725{
1174 if (!msg) 1726 if (!msg)
1175 msg = "(libev) system error"; 1727 msg = "(libev) system error";
1176 1728
… …
1189 abort (); 1741 abort ();
1190 } 1742 }
1191} 1743}
1192 1744
1193static void * 1745static void *
1194ev_realloc_emul (void *ptr, long size) EV_THROW 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1195{ 1747{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
1199 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
1200 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
1201 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
1202 */ 1753 */
1203 1754
1204 if (size) 1755 if (size)
1205 return realloc (ptr, size); 1756 return realloc (ptr, size);
1206 1757
1207 free (ptr); 1758 free (ptr);
1208 return 0; 1759 return 0;
1209#endif
1210} 1760}
1211 1761
1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1213 1763
1214void ecb_cold 1764ecb_cold
1765void
1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1216{ 1767{
1217 alloc = cb; 1768 alloc = cb;
1218} 1769}
1219 1770
1220inline_speed void * 1771inline_speed void *
… …
1247typedef struct 1798typedef struct
1248{ 1799{
1249 WL head; 1800 WL head;
1250 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
1251 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
1253 unsigned char unused; 1804 unsigned char unused;
1254#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
1255 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
1256#endif 1807#endif
1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1337 1888
1338/*****************************************************************************/ 1889/*****************************************************************************/
1339 1890
1340#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
1341ev_tstamp 1892ev_tstamp
1342ev_time (void) EV_THROW 1893ev_time (void) EV_NOEXCEPT
1343{ 1894{
1344#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
1345 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
1346 { 1897 {
1347 struct timespec ts; 1898 struct timespec ts;
… …
1371 return ev_time (); 1922 return ev_time ();
1372} 1923}
1373 1924
1374#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
1375ev_tstamp 1926ev_tstamp
1376ev_now (EV_P) EV_THROW 1927ev_now (EV_P) EV_NOEXCEPT
1377{ 1928{
1378 return ev_rt_now; 1929 return ev_rt_now;
1379} 1930}
1380#endif 1931#endif
1381 1932
1382void 1933void
1383ev_sleep (ev_tstamp delay) EV_THROW 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1384{ 1935{
1385 if (delay > 0.) 1936 if (delay > 0.)
1386 { 1937 {
1387#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
1388 struct timespec ts; 1939 struct timespec ts;
1389 1940
1390 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
1391 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
1392#elif defined _WIN32 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
1393 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
1394#else 1947#else
1395 struct timeval tv; 1948 struct timeval tv;
1396 1949
1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1428 } 1981 }
1429 1982
1430 return ncur; 1983 return ncur;
1431} 1984}
1432 1985
1433static void * noinline ecb_cold 1986noinline ecb_cold
1987static void *
1434array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
1435{ 1989{
1436 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
1437 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
1438} 1992}
1439 1993
1994#define array_needsize_noinit(base,count)
1995
1440#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
1441 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1442 1998
1443#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
1444 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
1445 { \ 2001 { \
1446 int ecb_unused ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
1447 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
1448 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
1449 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
1450 } 2006 }
1451 2007
… …
1463 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1464 2020
1465/*****************************************************************************/ 2021/*****************************************************************************/
1466 2022
1467/* dummy callback for pending events */ 2023/* dummy callback for pending events */
1468static void noinline 2024noinline
2025static void
1469pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
1470{ 2027{
1471} 2028}
1472 2029
1473void noinline 2030noinline
2031void
1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1475{ 2033{
1476 W w_ = (W)w; 2034 W w_ = (W)w;
1477 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
1478 2036
1479 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
1480 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
1481 else 2039 else
1482 { 2040 {
1483 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1485 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
1486 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
1487 } 2045 }
1488 2046
1489 pendingpri = NUMPRI - 1; 2047 pendingpri = NUMPRI - 1;
1490} 2048}
1491 2049
1492inline_speed void 2050inline_speed void
1493feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
1494{ 2052{
1495 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1496 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
1497} 2055}
1498 2056
1499inline_size void 2057inline_size void
1500feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
1540 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
1542} 2100}
1543 2101
1544void 2102void
1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1546{ 2104{
1547 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
1548 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
1549} 2107}
1550 2108
… …
1608 2166
1609 fdchangecnt = 0; 2167 fdchangecnt = 0;
1610} 2168}
1611 2169
1612/* something about the given fd changed */ 2170/* something about the given fd changed */
1613inline_size void 2171inline_size
2172void
1614fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1615{ 2174{
1616 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1617 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1618 2177
1619 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1620 { 2179 {
1621 ++fdchangecnt; 2180 ++fdchangecnt;
1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1623 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1624 } 2183 }
1625} 2184}
1626 2185
1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1628inline_speed void ecb_cold 2187inline_speed ecb_cold void
1629fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1630{ 2189{
1631 ev_io *w; 2190 ev_io *w;
1632 2191
1633 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1637 } 2196 }
1638} 2197}
1639 2198
1640/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1641inline_size int ecb_cold 2200inline_size ecb_cold int
1642fd_valid (int fd) 2201fd_valid (int fd)
1643{ 2202{
1644#ifdef _WIN32 2203#ifdef _WIN32
1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1646#else 2205#else
1647 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1648#endif 2207#endif
1649} 2208}
1650 2209
1651/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1652static void noinline ecb_cold 2211noinline ecb_cold
2212static void
1653fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1654{ 2214{
1655 int fd; 2215 int fd;
1656 2216
1657 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1659 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1660 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1661} 2221}
1662 2222
1663/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1664static void noinline ecb_cold 2224noinline ecb_cold
2225static void
1665fd_enomem (EV_P) 2226fd_enomem (EV_P)
1666{ 2227{
1667 int fd; 2228 int fd;
1668 2229
1669 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1673 break; 2234 break;
1674 } 2235 }
1675} 2236}
1676 2237
1677/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1678static void noinline 2239noinline
2240static void
1679fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1680{ 2242{
1681 int fd; 2243 int fd;
1682 2244
1683 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1864 2426
1865/*****************************************************************************/ 2427/*****************************************************************************/
1866 2428
1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1868 2430
1869static void noinline ecb_cold 2431noinline ecb_cold
2432static void
1870evpipe_init (EV_P) 2433evpipe_init (EV_P)
1871{ 2434{
1872 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1873 { 2436 {
2437 int fds [2];
2438
1874# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1877 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1878 2444
1879 if (evfd >= 0) 2445 if (fds [1] < 0)
1880 {
1881 evpipe [0] = -1;
1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1883 ev_io_set (&pipe_w, evfd, EV_READ);
1884 }
1885 else
1886# endif 2446# endif
1887 { 2447 {
1888 while (pipe (evpipe)) 2448 while (pipe (fds))
1889 ev_syserr ("(libev) error creating signal/async pipe"); 2449 ev_syserr ("(libev) error creating signal/async pipe");
1890 2450
1891 fd_intern (evpipe [0]); 2451 fd_intern (fds [0]);
1892 fd_intern (evpipe [1]);
1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1894 } 2452 }
1895 2453
2454 evpipe [0] = fds [0];
2455
2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1896 ev_io_start (EV_A_ &pipe_w); 2472 ev_io_start (EV_A_ &pipe_w);
1897 ev_unref (EV_A); /* watcher should not keep loop alive */ 2473 ev_unref (EV_A); /* watcher should not keep loop alive */
1898 } 2474 }
1899} 2475}
1900 2476
… …
1921 ECB_MEMORY_FENCE_RELEASE; 2497 ECB_MEMORY_FENCE_RELEASE;
1922 2498
1923 old_errno = errno; /* save errno because write will clobber it */ 2499 old_errno = errno; /* save errno because write will clobber it */
1924 2500
1925#if EV_USE_EVENTFD 2501#if EV_USE_EVENTFD
1926 if (evfd >= 0) 2502 if (evpipe [0] < 0)
1927 { 2503 {
1928 uint64_t counter = 1; 2504 uint64_t counter = 1;
1929 write (evfd, &counter, sizeof (uint64_t)); 2505 write (evpipe [1], &counter, sizeof (uint64_t));
1930 } 2506 }
1931 else 2507 else
1932#endif 2508#endif
1933 { 2509 {
1934#ifdef _WIN32 2510#ifdef _WIN32
1935 WSABUF buf; 2511 WSABUF buf;
1936 DWORD sent; 2512 DWORD sent;
1937 buf.buf = &buf; 2513 buf.buf = (char *)&buf;
1938 buf.len = 1; 2514 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else 2516#else
1941 write (evpipe [1], &(evpipe [1]), 1); 2517 write (evpipe [1], &(evpipe [1]), 1);
1942#endif 2518#endif
… …
1954 int i; 2530 int i;
1955 2531
1956 if (revents & EV_READ) 2532 if (revents & EV_READ)
1957 { 2533 {
1958#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1959 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1960 { 2536 {
1961 uint64_t counter; 2537 uint64_t counter;
1962 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1963 } 2539 }
1964 else 2540 else
1965#endif 2541#endif
1966 { 2542 {
1967 char dummy[4]; 2543 char dummy[4];
… …
2014} 2590}
2015 2591
2016/*****************************************************************************/ 2592/*****************************************************************************/
2017 2593
2018void 2594void
2019ev_feed_signal (int signum) EV_THROW 2595ev_feed_signal (int signum) EV_NOEXCEPT
2020{ 2596{
2021#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
2022 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
2023 2601
2024 if (!EV_A) 2602 if (!EV_A)
2025 return; 2603 return;
2026#endif 2604#endif
2027 2605
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1; 2606 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending); 2607 evpipe_write (EV_A_ &sig_pending);
2033} 2608}
2034 2609
2035static void 2610static void
… …
2040#endif 2615#endif
2041 2616
2042 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
2043} 2618}
2044 2619
2045void noinline 2620noinline
2621void
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2047{ 2623{
2048 WL w; 2624 WL w;
2049 2625
2050 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2051 return; 2627 return;
2052 2628
2053 --signum; 2629 --signum;
2054 2630
2055#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
2059 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
2060 return; 2636 return;
2061#endif 2637#endif
2062 2638
2063 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2064 MEMORY_FENCE_RELEASE; 2640 ECB_MEMORY_FENCE_RELEASE;
2065 2641
2066 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
2068} 2644}
2069 2645
… …
2160# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
2161#endif 2737#endif
2162#if EV_USE_EPOLL 2738#if EV_USE_EPOLL
2163# include "ev_epoll.c" 2739# include "ev_epoll.c"
2164#endif 2740#endif
2741#if EV_USE_LINUXAIO
2742# include "ev_linuxaio.c"
2743#endif
2165#if EV_USE_POLL 2744#if EV_USE_POLL
2166# include "ev_poll.c" 2745# include "ev_poll.c"
2167#endif 2746#endif
2168#if EV_USE_SELECT 2747#if EV_USE_SELECT
2169# include "ev_select.c" 2748# include "ev_select.c"
2170#endif 2749#endif
2171 2750
2172int ecb_cold 2751ecb_cold int
2173ev_version_major (void) EV_THROW 2752ev_version_major (void) EV_NOEXCEPT
2174{ 2753{
2175 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
2176} 2755}
2177 2756
2178int ecb_cold 2757ecb_cold int
2179ev_version_minor (void) EV_THROW 2758ev_version_minor (void) EV_NOEXCEPT
2180{ 2759{
2181 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
2182} 2761}
2183 2762
2184/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
2185int inline_size ecb_cold 2764inline_size ecb_cold int
2186enable_secure (void) 2765enable_secure (void)
2187{ 2766{
2188#ifdef _WIN32 2767#ifdef _WIN32
2189 return 0; 2768 return 0;
2190#else 2769#else
2191 return getuid () != geteuid () 2770 return getuid () != geteuid ()
2192 || getgid () != getegid (); 2771 || getgid () != getegid ();
2193#endif 2772#endif
2194} 2773}
2195 2774
2196unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2197ev_supported_backends (void) EV_THROW 2777ev_supported_backends (void) EV_NOEXCEPT
2198{ 2778{
2199 unsigned int flags = 0; 2779 unsigned int flags = 0;
2200 2780
2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2203 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2204 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2206 2787
2207 return flags; 2788 return flags;
2208} 2789}
2209 2790
2210unsigned int ecb_cold 2791ecb_cold
2792unsigned int
2211ev_recommended_backends (void) EV_THROW 2793ev_recommended_backends (void) EV_NOEXCEPT
2212{ 2794{
2213 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
2214 2796
2215#ifndef __NetBSD__ 2797#ifndef __NetBSD__
2216 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
2224#endif 2806#endif
2225#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif 2809#endif
2228 2810
2811 /* TODO: linuxaio is very experimental */
2812#if !EV_RECOMMEND_LINUXAIO
2813 flags &= ~EVBACKEND_LINUXAIO;
2814#endif
2815
2229 return flags; 2816 return flags;
2230} 2817}
2231 2818
2232unsigned int ecb_cold 2819ecb_cold
2820unsigned int
2233ev_embeddable_backends (void) EV_THROW 2821ev_embeddable_backends (void) EV_NOEXCEPT
2234{ 2822{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2823 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236 2824
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2825 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2826 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2240 2828
2241 return flags; 2829 return flags;
2242} 2830}
2243 2831
2244unsigned int 2832unsigned int
2245ev_backend (EV_P) EV_THROW 2833ev_backend (EV_P) EV_NOEXCEPT
2246{ 2834{
2247 return backend; 2835 return backend;
2248} 2836}
2249 2837
2250#if EV_FEATURE_API 2838#if EV_FEATURE_API
2251unsigned int 2839unsigned int
2252ev_iteration (EV_P) EV_THROW 2840ev_iteration (EV_P) EV_NOEXCEPT
2253{ 2841{
2254 return loop_count; 2842 return loop_count;
2255} 2843}
2256 2844
2257unsigned int 2845unsigned int
2258ev_depth (EV_P) EV_THROW 2846ev_depth (EV_P) EV_NOEXCEPT
2259{ 2847{
2260 return loop_depth; 2848 return loop_depth;
2261} 2849}
2262 2850
2263void 2851void
2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2852ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2265{ 2853{
2266 io_blocktime = interval; 2854 io_blocktime = interval;
2267} 2855}
2268 2856
2269void 2857void
2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2858ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2271{ 2859{
2272 timeout_blocktime = interval; 2860 timeout_blocktime = interval;
2273} 2861}
2274 2862
2275void 2863void
2276ev_set_userdata (EV_P_ void *data) EV_THROW 2864ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2277{ 2865{
2278 userdata = data; 2866 userdata = data;
2279} 2867}
2280 2868
2281void * 2869void *
2282ev_userdata (EV_P) EV_THROW 2870ev_userdata (EV_P) EV_NOEXCEPT
2283{ 2871{
2284 return userdata; 2872 return userdata;
2285} 2873}
2286 2874
2287void 2875void
2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2876ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2289{ 2877{
2290 invoke_cb = invoke_pending_cb; 2878 invoke_cb = invoke_pending_cb;
2291} 2879}
2292 2880
2293void 2881void
2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2882ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2295{ 2883{
2296 release_cb = release; 2884 release_cb = release;
2297 acquire_cb = acquire; 2885 acquire_cb = acquire;
2298} 2886}
2299#endif 2887#endif
2300 2888
2301/* initialise a loop structure, must be zero-initialised */ 2889/* initialise a loop structure, must be zero-initialised */
2302static void noinline ecb_cold 2890noinline ecb_cold
2891static void
2303loop_init (EV_P_ unsigned int flags) EV_THROW 2892loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2304{ 2893{
2305 if (!backend) 2894 if (!backend)
2306 { 2895 {
2307 origflags = flags; 2896 origflags = flags;
2308 2897
… …
2353#if EV_ASYNC_ENABLE 2942#if EV_ASYNC_ENABLE
2354 async_pending = 0; 2943 async_pending = 0;
2355#endif 2944#endif
2356 pipe_write_skipped = 0; 2945 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0; 2946 pipe_write_wanted = 0;
2947 evpipe [0] = -1;
2948 evpipe [1] = -1;
2358#if EV_USE_INOTIFY 2949#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2950 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif 2951#endif
2361#if EV_USE_SIGNALFD 2952#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2953 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2364 2955
2365 if (!(flags & EVBACKEND_MASK)) 2956 if (!(flags & EVBACKEND_MASK))
2366 flags |= ev_recommended_backends (); 2957 flags |= ev_recommended_backends ();
2367 2958
2368#if EV_USE_IOCP 2959#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif 2961#endif
2371#if EV_USE_PORT 2962#if EV_USE_PORT
2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2963 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2373#endif 2964#endif
2374#if EV_USE_KQUEUE 2965#if EV_USE_KQUEUE
2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2967#endif
2968#if EV_USE_LINUXAIO
2969 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2376#endif 2970#endif
2377#if EV_USE_EPOLL 2971#if EV_USE_EPOLL
2378 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2379#endif 2973#endif
2380#if EV_USE_POLL 2974#if EV_USE_POLL
2381 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2975 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2382#endif 2976#endif
2383#if EV_USE_SELECT 2977#if EV_USE_SELECT
2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2978 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2385#endif 2979#endif
2386 2980
2387 ev_prepare_init (&pending_w, pendingcb); 2981 ev_prepare_init (&pending_w, pendingcb);
2388 2982
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2983#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2392#endif 2986#endif
2393 } 2987 }
2394} 2988}
2395 2989
2396/* free up a loop structure */ 2990/* free up a loop structure */
2397void ecb_cold 2991ecb_cold
2992void
2398ev_loop_destroy (EV_P) 2993ev_loop_destroy (EV_P)
2399{ 2994{
2400 int i; 2995 int i;
2401 2996
2402#if EV_MULTIPLICITY 2997#if EV_MULTIPLICITY
… …
2425 if (ev_is_active (&pipe_w)) 3020 if (ev_is_active (&pipe_w))
2426 { 3021 {
2427 /*ev_ref (EV_A);*/ 3022 /*ev_ref (EV_A);*/
2428 /*ev_io_stop (EV_A_ &pipe_w);*/ 3023 /*ev_io_stop (EV_A_ &pipe_w);*/
2429 3024
2430#if EV_USE_EVENTFD
2431 if (evfd >= 0)
2432 close (evfd);
2433#endif
2434
2435 if (evpipe [0] >= 0)
2436 {
2437 EV_WIN32_CLOSE_FD (evpipe [0]); 3025 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2438 EV_WIN32_CLOSE_FD (evpipe [1]); 3026 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2439 }
2440 } 3027 }
2441 3028
2442#if EV_USE_SIGNALFD 3029#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w)) 3030 if (ev_is_active (&sigfd_w))
2444 close (sigfd); 3031 close (sigfd);
… …
2451 3038
2452 if (backend_fd >= 0) 3039 if (backend_fd >= 0)
2453 close (backend_fd); 3040 close (backend_fd);
2454 3041
2455#if EV_USE_IOCP 3042#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3043 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif 3044#endif
2458#if EV_USE_PORT 3045#if EV_USE_PORT
2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3046 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2460#endif 3047#endif
2461#if EV_USE_KQUEUE 3048#if EV_USE_KQUEUE
2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3049 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3050#endif
3051#if EV_USE_LINUXAIO
3052 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2463#endif 3053#endif
2464#if EV_USE_EPOLL 3054#if EV_USE_EPOLL
2465 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3055 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2466#endif 3056#endif
2467#if EV_USE_POLL 3057#if EV_USE_POLL
2468 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3058 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2469#endif 3059#endif
2470#if EV_USE_SELECT 3060#if EV_USE_SELECT
2471 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3061 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2472#endif 3062#endif
2473 3063
2474 for (i = NUMPRI; i--; ) 3064 for (i = NUMPRI; i--; )
2475 { 3065 {
2476 array_free (pending, [i]); 3066 array_free (pending, [i]);
… …
2518 3108
2519inline_size void 3109inline_size void
2520loop_fork (EV_P) 3110loop_fork (EV_P)
2521{ 3111{
2522#if EV_USE_PORT 3112#if EV_USE_PORT
2523 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3113 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2524#endif 3114#endif
2525#if EV_USE_KQUEUE 3115#if EV_USE_KQUEUE
2526 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3116 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3117#endif
3118#if EV_USE_LINUXAIO
3119 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2527#endif 3120#endif
2528#if EV_USE_EPOLL 3121#if EV_USE_EPOLL
2529 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3122 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2530#endif 3123#endif
2531#if EV_USE_INOTIFY 3124#if EV_USE_INOTIFY
2532 infy_fork (EV_A); 3125 infy_fork (EV_A);
2533#endif 3126#endif
2534 3127
3128#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2535 if (ev_is_active (&pipe_w)) 3129 if (ev_is_active (&pipe_w) && postfork != 2)
2536 { 3130 {
2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3131 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2538 3132
2539 ev_ref (EV_A); 3133 ev_ref (EV_A);
2540 ev_io_stop (EV_A_ &pipe_w); 3134 ev_io_stop (EV_A_ &pipe_w);
2541 3135
2542#if EV_USE_EVENTFD
2543 if (evfd >= 0)
2544 close (evfd);
2545#endif
2546
2547 if (evpipe [0] >= 0) 3136 if (evpipe [0] >= 0)
2548 {
2549 EV_WIN32_CLOSE_FD (evpipe [0]); 3137 EV_WIN32_CLOSE_FD (evpipe [0]);
2550 EV_WIN32_CLOSE_FD (evpipe [1]);
2551 }
2552 3138
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2554 evpipe_init (EV_A); 3139 evpipe_init (EV_A);
2555 /* now iterate over everything, in case we missed something */ 3140 /* iterate over everything, in case we missed something before */
2556 pipecb (EV_A_ &pipe_w, EV_READ); 3141 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
2558 } 3142 }
3143#endif
2559 3144
2560 postfork = 0; 3145 postfork = 0;
2561} 3146}
2562 3147
2563#if EV_MULTIPLICITY 3148#if EV_MULTIPLICITY
2564 3149
3150ecb_cold
2565struct ev_loop * ecb_cold 3151struct ev_loop *
2566ev_loop_new (unsigned int flags) EV_THROW 3152ev_loop_new (unsigned int flags) EV_NOEXCEPT
2567{ 3153{
2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3154 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2569 3155
2570 memset (EV_A, 0, sizeof (struct ev_loop)); 3156 memset (EV_A, 0, sizeof (struct ev_loop));
2571 loop_init (EV_A_ flags); 3157 loop_init (EV_A_ flags);
… …
2578} 3164}
2579 3165
2580#endif /* multiplicity */ 3166#endif /* multiplicity */
2581 3167
2582#if EV_VERIFY 3168#if EV_VERIFY
2583static void noinline ecb_cold 3169noinline ecb_cold
3170static void
2584verify_watcher (EV_P_ W w) 3171verify_watcher (EV_P_ W w)
2585{ 3172{
2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3173 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2587 3174
2588 if (w->pending) 3175 if (w->pending)
2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3176 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2590} 3177}
2591 3178
2592static void noinline ecb_cold 3179noinline ecb_cold
3180static void
2593verify_heap (EV_P_ ANHE *heap, int N) 3181verify_heap (EV_P_ ANHE *heap, int N)
2594{ 3182{
2595 int i; 3183 int i;
2596 3184
2597 for (i = HEAP0; i < N + HEAP0; ++i) 3185 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2602 3190
2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3191 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2604 } 3192 }
2605} 3193}
2606 3194
2607static void noinline ecb_cold 3195noinline ecb_cold
3196static void
2608array_verify (EV_P_ W *ws, int cnt) 3197array_verify (EV_P_ W *ws, int cnt)
2609{ 3198{
2610 while (cnt--) 3199 while (cnt--)
2611 { 3200 {
2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3201 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2615} 3204}
2616#endif 3205#endif
2617 3206
2618#if EV_FEATURE_API 3207#if EV_FEATURE_API
2619void ecb_cold 3208void ecb_cold
2620ev_verify (EV_P) EV_THROW 3209ev_verify (EV_P) EV_NOEXCEPT
2621{ 3210{
2622#if EV_VERIFY 3211#if EV_VERIFY
2623 int i; 3212 int i;
2624 WL w, w2; 3213 WL w, w2;
2625 3214
… …
2701#endif 3290#endif
2702} 3291}
2703#endif 3292#endif
2704 3293
2705#if EV_MULTIPLICITY 3294#if EV_MULTIPLICITY
3295ecb_cold
2706struct ev_loop * ecb_cold 3296struct ev_loop *
2707#else 3297#else
2708int 3298int
2709#endif 3299#endif
2710ev_default_loop (unsigned int flags) EV_THROW 3300ev_default_loop (unsigned int flags) EV_NOEXCEPT
2711{ 3301{
2712 if (!ev_default_loop_ptr) 3302 if (!ev_default_loop_ptr)
2713 { 3303 {
2714#if EV_MULTIPLICITY 3304#if EV_MULTIPLICITY
2715 EV_P = ev_default_loop_ptr = &default_loop_struct; 3305 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2734 3324
2735 return ev_default_loop_ptr; 3325 return ev_default_loop_ptr;
2736} 3326}
2737 3327
2738void 3328void
2739ev_loop_fork (EV_P) EV_THROW 3329ev_loop_fork (EV_P) EV_NOEXCEPT
2740{ 3330{
2741 postfork = 1; /* must be in line with ev_default_fork */ 3331 postfork = 1;
2742} 3332}
2743 3333
2744/*****************************************************************************/ 3334/*****************************************************************************/
2745 3335
2746void 3336void
… …
2748{ 3338{
2749 EV_CB_INVOKE ((W)w, revents); 3339 EV_CB_INVOKE ((W)w, revents);
2750} 3340}
2751 3341
2752unsigned int 3342unsigned int
2753ev_pending_count (EV_P) EV_THROW 3343ev_pending_count (EV_P) EV_NOEXCEPT
2754{ 3344{
2755 int pri; 3345 int pri;
2756 unsigned int count = 0; 3346 unsigned int count = 0;
2757 3347
2758 for (pri = NUMPRI; pri--; ) 3348 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri]; 3349 count += pendingcnt [pri];
2760 3350
2761 return count; 3351 return count;
2762} 3352}
2763 3353
2764void noinline 3354noinline
3355void
2765ev_invoke_pending (EV_P) 3356ev_invoke_pending (EV_P)
2766{ 3357{
2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3358 pendingpri = NUMPRI;
3359
3360 do
3361 {
3362 --pendingpri;
3363
3364 /* pendingpri possibly gets modified in the inner loop */
2768 while (pendingcnt [pendingpri]) 3365 while (pendingcnt [pendingpri])
2769 { 3366 {
2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3367 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2771 3368
2772 p->w->pending = 0; 3369 p->w->pending = 0;
2773 EV_CB_INVOKE (p->w, p->events); 3370 EV_CB_INVOKE (p->w, p->events);
2774 EV_FREQUENT_CHECK; 3371 EV_FREQUENT_CHECK;
2775 } 3372 }
3373 }
3374 while (pendingpri);
2776} 3375}
2777 3376
2778#if EV_IDLE_ENABLE 3377#if EV_IDLE_ENABLE
2779/* make idle watchers pending. this handles the "call-idle */ 3378/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */ 3379/* only when higher priorities are idle" logic */
… …
2838 } 3437 }
2839} 3438}
2840 3439
2841#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2842 3441
2843static void noinline 3442noinline
3443static void
2844periodic_recalc (EV_P_ ev_periodic *w) 3444periodic_recalc (EV_P_ ev_periodic *w)
2845{ 3445{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3446 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3447 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848 3448
… …
2906 } 3506 }
2907} 3507}
2908 3508
2909/* simply recalculate all periodics */ 3509/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3510/* TODO: maybe ensure that at least one event happens when jumping forward? */
2911static void noinline ecb_cold 3511noinline ecb_cold
3512static void
2912periodics_reschedule (EV_P) 3513periodics_reschedule (EV_P)
2913{ 3514{
2914 int i; 3515 int i;
2915 3516
2916 /* adjust periodics after time jump */ 3517 /* adjust periodics after time jump */
… …
2929 reheap (periodics, periodiccnt); 3530 reheap (periodics, periodiccnt);
2930} 3531}
2931#endif 3532#endif
2932 3533
2933/* adjust all timers by a given offset */ 3534/* adjust all timers by a given offset */
2934static void noinline ecb_cold 3535noinline ecb_cold
3536static void
2935timers_reschedule (EV_P_ ev_tstamp adjust) 3537timers_reschedule (EV_P_ ev_tstamp adjust)
2936{ 3538{
2937 int i; 3539 int i;
2938 3540
2939 for (i = 0; i < timercnt; ++i) 3541 for (i = 0; i < timercnt; ++i)
… …
3138 backend_poll (EV_A_ waittime); 3740 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140 3742
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3743 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142 3744
3745 ECB_MEMORY_FENCE_ACQUIRE;
3143 if (pipe_write_skipped) 3746 if (pipe_write_skipped)
3144 { 3747 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3748 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3146 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3749 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 } 3750 }
… …
3185 3788
3186 return activecnt; 3789 return activecnt;
3187} 3790}
3188 3791
3189void 3792void
3190ev_break (EV_P_ int how) EV_THROW 3793ev_break (EV_P_ int how) EV_NOEXCEPT
3191{ 3794{
3192 loop_done = how; 3795 loop_done = how;
3193} 3796}
3194 3797
3195void 3798void
3196ev_ref (EV_P) EV_THROW 3799ev_ref (EV_P) EV_NOEXCEPT
3197{ 3800{
3198 ++activecnt; 3801 ++activecnt;
3199} 3802}
3200 3803
3201void 3804void
3202ev_unref (EV_P) EV_THROW 3805ev_unref (EV_P) EV_NOEXCEPT
3203{ 3806{
3204 --activecnt; 3807 --activecnt;
3205} 3808}
3206 3809
3207void 3810void
3208ev_now_update (EV_P) EV_THROW 3811ev_now_update (EV_P) EV_NOEXCEPT
3209{ 3812{
3210 time_update (EV_A_ 1e100); 3813 time_update (EV_A_ 1e100);
3211} 3814}
3212 3815
3213void 3816void
3214ev_suspend (EV_P) EV_THROW 3817ev_suspend (EV_P) EV_NOEXCEPT
3215{ 3818{
3216 ev_now_update (EV_A); 3819 ev_now_update (EV_A);
3217} 3820}
3218 3821
3219void 3822void
3220ev_resume (EV_P) EV_THROW 3823ev_resume (EV_P) EV_NOEXCEPT
3221{ 3824{
3222 ev_tstamp mn_prev = mn_now; 3825 ev_tstamp mn_prev = mn_now;
3223 3826
3224 ev_now_update (EV_A); 3827 ev_now_update (EV_A);
3225 timers_reschedule (EV_A_ mn_now - mn_prev); 3828 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3264 w->pending = 0; 3867 w->pending = 0;
3265 } 3868 }
3266} 3869}
3267 3870
3268int 3871int
3269ev_clear_pending (EV_P_ void *w) EV_THROW 3872ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3270{ 3873{
3271 W w_ = (W)w; 3874 W w_ = (W)w;
3272 int pending = w_->pending; 3875 int pending = w_->pending;
3273 3876
3274 if (expect_true (pending)) 3877 if (expect_true (pending))
… …
3306 w->active = 0; 3909 w->active = 0;
3307} 3910}
3308 3911
3309/*****************************************************************************/ 3912/*****************************************************************************/
3310 3913
3311void noinline 3914noinline
3915void
3312ev_io_start (EV_P_ ev_io *w) EV_THROW 3916ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3313{ 3917{
3314 int fd = w->fd; 3918 int fd = w->fd;
3315 3919
3316 if (expect_false (ev_is_active (w))) 3920 if (expect_false (ev_is_active (w)))
3317 return; 3921 return;
… …
3320 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3924 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3321 3925
3322 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
3323 3927
3324 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3326 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3327 3931
3328 /* common bug, apparently */ 3932 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330 3934
… …
3332 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
3333 3937
3334 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3335} 3939}
3336 3940
3337void noinline 3941noinline
3942void
3338ev_io_stop (EV_P_ ev_io *w) EV_THROW 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3339{ 3944{
3340 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3341 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
3342 return; 3947 return;
3343 3948
… …
3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3956 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3352 3957
3353 EV_FREQUENT_CHECK; 3958 EV_FREQUENT_CHECK;
3354} 3959}
3355 3960
3356void noinline 3961noinline
3962void
3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3963ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3358{ 3964{
3359 if (expect_false (ev_is_active (w))) 3965 if (expect_false (ev_is_active (w)))
3360 return; 3966 return;
3361 3967
3362 ev_at (w) += mn_now; 3968 ev_at (w) += mn_now;
… …
3365 3971
3366 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
3367 3973
3368 ++timercnt; 3974 ++timercnt;
3369 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3975 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3370 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3976 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3371 ANHE_w (timers [ev_active (w)]) = (WT)w; 3977 ANHE_w (timers [ev_active (w)]) = (WT)w;
3372 ANHE_at_cache (timers [ev_active (w)]); 3978 ANHE_at_cache (timers [ev_active (w)]);
3373 upheap (timers, ev_active (w)); 3979 upheap (timers, ev_active (w));
3374 3980
3375 EV_FREQUENT_CHECK; 3981 EV_FREQUENT_CHECK;
3376 3982
3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3983 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3378} 3984}
3379 3985
3380void noinline 3986noinline
3987void
3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3988ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3382{ 3989{
3383 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
3384 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
3385 return; 3992 return;
3386 3993
… …
3405 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
3406 4013
3407 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
3408} 4015}
3409 4016
3410void noinline 4017noinline
4018void
3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4019ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3412{ 4020{
3413 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3414 4022
3415 clear_pending (EV_A_ (W)w); 4023 clear_pending (EV_A_ (W)w);
3416 4024
… …
3433 4041
3434 EV_FREQUENT_CHECK; 4042 EV_FREQUENT_CHECK;
3435} 4043}
3436 4044
3437ev_tstamp 4045ev_tstamp
3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4046ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3439{ 4047{
3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4048 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3441} 4049}
3442 4050
3443#if EV_PERIODIC_ENABLE 4051#if EV_PERIODIC_ENABLE
3444void noinline 4052noinline
4053void
3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4054ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3446{ 4055{
3447 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3448 return; 4057 return;
3449 4058
3450 if (w->reschedule_cb) 4059 if (w->reschedule_cb)
… …
3459 4068
3460 EV_FREQUENT_CHECK; 4069 EV_FREQUENT_CHECK;
3461 4070
3462 ++periodiccnt; 4071 ++periodiccnt;
3463 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4072 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3464 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4073 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3465 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4074 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3466 ANHE_at_cache (periodics [ev_active (w)]); 4075 ANHE_at_cache (periodics [ev_active (w)]);
3467 upheap (periodics, ev_active (w)); 4076 upheap (periodics, ev_active (w));
3468 4077
3469 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
3470 4079
3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4080 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3472} 4081}
3473 4082
3474void noinline 4083noinline
4084void
3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4085ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3476{ 4086{
3477 clear_pending (EV_A_ (W)w); 4087 clear_pending (EV_A_ (W)w);
3478 if (expect_false (!ev_is_active (w))) 4088 if (expect_false (!ev_is_active (w)))
3479 return; 4089 return;
3480 4090
… …
3497 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
3498 4108
3499 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
3500} 4110}
3501 4111
3502void noinline 4112noinline
4113void
3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4114ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3504{ 4115{
3505 /* TODO: use adjustheap and recalculation */ 4116 /* TODO: use adjustheap and recalculation */
3506 ev_periodic_stop (EV_A_ w); 4117 ev_periodic_stop (EV_A_ w);
3507 ev_periodic_start (EV_A_ w); 4118 ev_periodic_start (EV_A_ w);
3508} 4119}
… …
3512# define SA_RESTART 0 4123# define SA_RESTART 0
3513#endif 4124#endif
3514 4125
3515#if EV_SIGNAL_ENABLE 4126#if EV_SIGNAL_ENABLE
3516 4127
3517void noinline 4128noinline
4129void
3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4130ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3519{ 4131{
3520 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
3521 return; 4133 return;
3522 4134
3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4135 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3525#if EV_MULTIPLICITY 4137#if EV_MULTIPLICITY
3526 assert (("libev: a signal must not be attached to two different loops", 4138 assert (("libev: a signal must not be attached to two different loops",
3527 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4139 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3528 4140
3529 signals [w->signum - 1].loop = EV_A; 4141 signals [w->signum - 1].loop = EV_A;
4142 ECB_MEMORY_FENCE_RELEASE;
3530#endif 4143#endif
3531 4144
3532 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
3533 4146
3534#if EV_USE_SIGNALFD 4147#if EV_USE_SIGNALFD
… …
3593 } 4206 }
3594 4207
3595 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3596} 4209}
3597 4210
3598void noinline 4211noinline
4212void
3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4213ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3600{ 4214{
3601 clear_pending (EV_A_ (W)w); 4215 clear_pending (EV_A_ (W)w);
3602 if (expect_false (!ev_is_active (w))) 4216 if (expect_false (!ev_is_active (w)))
3603 return; 4217 return;
3604 4218
… …
3635#endif 4249#endif
3636 4250
3637#if EV_CHILD_ENABLE 4251#if EV_CHILD_ENABLE
3638 4252
3639void 4253void
3640ev_child_start (EV_P_ ev_child *w) EV_THROW 4254ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3641{ 4255{
3642#if EV_MULTIPLICITY 4256#if EV_MULTIPLICITY
3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4257 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3644#endif 4258#endif
3645 if (expect_false (ev_is_active (w))) 4259 if (expect_false (ev_is_active (w)))
… …
3652 4266
3653 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3654} 4268}
3655 4269
3656void 4270void
3657ev_child_stop (EV_P_ ev_child *w) EV_THROW 4271ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3658{ 4272{
3659 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3660 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3661 return; 4275 return;
3662 4276
… …
3679 4293
3680#define DEF_STAT_INTERVAL 5.0074891 4294#define DEF_STAT_INTERVAL 5.0074891
3681#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4295#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3682#define MIN_STAT_INTERVAL 0.1074891 4296#define MIN_STAT_INTERVAL 0.1074891
3683 4297
3684static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4298noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3685 4299
3686#if EV_USE_INOTIFY 4300#if EV_USE_INOTIFY
3687 4301
3688/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4302/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3689# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4303# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3690 4304
3691static void noinline 4305noinline
4306static void
3692infy_add (EV_P_ ev_stat *w) 4307infy_add (EV_P_ ev_stat *w)
3693{ 4308{
3694 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); 4309 w->wd = inotify_add_watch (fs_fd, w->path,
4310 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4311 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4312 | IN_DONT_FOLLOW | IN_MASK_ADD);
3695 4313
3696 if (w->wd >= 0) 4314 if (w->wd >= 0)
3697 { 4315 {
3698 struct statfs sfs; 4316 struct statfs sfs;
3699 4317
… …
3703 4321
3704 if (!fs_2625) 4322 if (!fs_2625)
3705 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3706 else if (!statfs (w->path, &sfs) 4324 else if (!statfs (w->path, &sfs)
3707 && (sfs.f_type == 0x1373 /* devfs */ 4325 && (sfs.f_type == 0x1373 /* devfs */
4326 || sfs.f_type == 0x4006 /* fat */
4327 || sfs.f_type == 0x4d44 /* msdos */
3708 || sfs.f_type == 0xEF53 /* ext2/3 */ 4328 || sfs.f_type == 0xEF53 /* ext2/3 */
4329 || sfs.f_type == 0x72b6 /* jffs2 */
4330 || sfs.f_type == 0x858458f6 /* ramfs */
4331 || sfs.f_type == 0x5346544e /* ntfs */
3709 || sfs.f_type == 0x3153464a /* jfs */ 4332 || sfs.f_type == 0x3153464a /* jfs */
4333 || sfs.f_type == 0x9123683e /* btrfs */
3710 || sfs.f_type == 0x52654973 /* reiser3 */ 4334 || sfs.f_type == 0x52654973 /* reiser3 */
3711 || sfs.f_type == 0x01021994 /* tempfs */ 4335 || sfs.f_type == 0x01021994 /* tmpfs */
3712 || sfs.f_type == 0x58465342 /* xfs */)) 4336 || sfs.f_type == 0x58465342 /* xfs */))
3713 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4337 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3714 else 4338 else
3715 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4339 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3716 } 4340 }
… …
3751 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3752 ev_timer_again (EV_A_ &w->timer); 4376 ev_timer_again (EV_A_ &w->timer);
3753 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4377 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3754} 4378}
3755 4379
3756static void noinline 4380noinline
4381static void
3757infy_del (EV_P_ ev_stat *w) 4382infy_del (EV_P_ ev_stat *w)
3758{ 4383{
3759 int slot; 4384 int slot;
3760 int wd = w->wd; 4385 int wd = w->wd;
3761 4386
… …
3768 4393
3769 /* remove this watcher, if others are watching it, they will rearm */ 4394 /* remove this watcher, if others are watching it, they will rearm */
3770 inotify_rm_watch (fs_fd, wd); 4395 inotify_rm_watch (fs_fd, wd);
3771} 4396}
3772 4397
3773static void noinline 4398noinline
4399static void
3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4400infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3775{ 4401{
3776 if (slot < 0) 4402 if (slot < 0)
3777 /* overflow, need to check for all hash slots */ 4403 /* overflow, need to check for all hash slots */
3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4404 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3814 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4440 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3815 ofs += sizeof (struct inotify_event) + ev->len; 4441 ofs += sizeof (struct inotify_event) + ev->len;
3816 } 4442 }
3817} 4443}
3818 4444
3819inline_size void ecb_cold 4445inline_size ecb_cold
4446void
3820ev_check_2625 (EV_P) 4447ev_check_2625 (EV_P)
3821{ 4448{
3822 /* kernels < 2.6.25 are borked 4449 /* kernels < 2.6.25 are borked
3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4450 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3824 */ 4451 */
… …
3914#else 4541#else
3915# define EV_LSTAT(p,b) lstat (p, b) 4542# define EV_LSTAT(p,b) lstat (p, b)
3916#endif 4543#endif
3917 4544
3918void 4545void
3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4546ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3920{ 4547{
3921 if (lstat (w->path, &w->attr) < 0) 4548 if (lstat (w->path, &w->attr) < 0)
3922 w->attr.st_nlink = 0; 4549 w->attr.st_nlink = 0;
3923 else if (!w->attr.st_nlink) 4550 else if (!w->attr.st_nlink)
3924 w->attr.st_nlink = 1; 4551 w->attr.st_nlink = 1;
3925} 4552}
3926 4553
3927static void noinline 4554noinline
4555static void
3928stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4556stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3929{ 4557{
3930 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4558 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3931 4559
3932 ev_statdata prev = w->attr; 4560 ev_statdata prev = w->attr;
… …
3963 ev_feed_event (EV_A_ w, EV_STAT); 4591 ev_feed_event (EV_A_ w, EV_STAT);
3964 } 4592 }
3965} 4593}
3966 4594
3967void 4595void
3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4596ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3969{ 4597{
3970 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3971 return; 4599 return;
3972 4600
3973 ev_stat_stat (EV_A_ w); 4601 ev_stat_stat (EV_A_ w);
… …
3994 4622
3995 EV_FREQUENT_CHECK; 4623 EV_FREQUENT_CHECK;
3996} 4624}
3997 4625
3998void 4626void
3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4627ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4000{ 4628{
4001 clear_pending (EV_A_ (W)w); 4629 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4630 if (expect_false (!ev_is_active (w)))
4003 return; 4631 return;
4004 4632
… …
4020} 4648}
4021#endif 4649#endif
4022 4650
4023#if EV_IDLE_ENABLE 4651#if EV_IDLE_ENABLE
4024void 4652void
4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4653ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4026{ 4654{
4027 if (expect_false (ev_is_active (w))) 4655 if (expect_false (ev_is_active (w)))
4028 return; 4656 return;
4029 4657
4030 pri_adjust (EV_A_ (W)w); 4658 pri_adjust (EV_A_ (W)w);
… …
4035 int active = ++idlecnt [ABSPRI (w)]; 4663 int active = ++idlecnt [ABSPRI (w)];
4036 4664
4037 ++idleall; 4665 ++idleall;
4038 ev_start (EV_A_ (W)w, active); 4666 ev_start (EV_A_ (W)w, active);
4039 4667
4040 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4668 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4041 idles [ABSPRI (w)][active - 1] = w; 4669 idles [ABSPRI (w)][active - 1] = w;
4042 } 4670 }
4043 4671
4044 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
4045} 4673}
4046 4674
4047void 4675void
4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4676ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4049{ 4677{
4050 clear_pending (EV_A_ (W)w); 4678 clear_pending (EV_A_ (W)w);
4051 if (expect_false (!ev_is_active (w))) 4679 if (expect_false (!ev_is_active (w)))
4052 return; 4680 return;
4053 4681
… …
4067} 4695}
4068#endif 4696#endif
4069 4697
4070#if EV_PREPARE_ENABLE 4698#if EV_PREPARE_ENABLE
4071void 4699void
4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4700ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4073{ 4701{
4074 if (expect_false (ev_is_active (w))) 4702 if (expect_false (ev_is_active (w)))
4075 return; 4703 return;
4076 4704
4077 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
4078 4706
4079 ev_start (EV_A_ (W)w, ++preparecnt); 4707 ev_start (EV_A_ (W)w, ++preparecnt);
4080 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4708 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4081 prepares [preparecnt - 1] = w; 4709 prepares [preparecnt - 1] = w;
4082 4710
4083 EV_FREQUENT_CHECK; 4711 EV_FREQUENT_CHECK;
4084} 4712}
4085 4713
4086void 4714void
4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4715ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4088{ 4716{
4089 clear_pending (EV_A_ (W)w); 4717 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4718 if (expect_false (!ev_is_active (w)))
4091 return; 4719 return;
4092 4720
… …
4105} 4733}
4106#endif 4734#endif
4107 4735
4108#if EV_CHECK_ENABLE 4736#if EV_CHECK_ENABLE
4109void 4737void
4110ev_check_start (EV_P_ ev_check *w) EV_THROW 4738ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4111{ 4739{
4112 if (expect_false (ev_is_active (w))) 4740 if (expect_false (ev_is_active (w)))
4113 return; 4741 return;
4114 4742
4115 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
4116 4744
4117 ev_start (EV_A_ (W)w, ++checkcnt); 4745 ev_start (EV_A_ (W)w, ++checkcnt);
4118 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4746 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4119 checks [checkcnt - 1] = w; 4747 checks [checkcnt - 1] = w;
4120 4748
4121 EV_FREQUENT_CHECK; 4749 EV_FREQUENT_CHECK;
4122} 4750}
4123 4751
4124void 4752void
4125ev_check_stop (EV_P_ ev_check *w) EV_THROW 4753ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4126{ 4754{
4127 clear_pending (EV_A_ (W)w); 4755 clear_pending (EV_A_ (W)w);
4128 if (expect_false (!ev_is_active (w))) 4756 if (expect_false (!ev_is_active (w)))
4129 return; 4757 return;
4130 4758
… …
4142 EV_FREQUENT_CHECK; 4770 EV_FREQUENT_CHECK;
4143} 4771}
4144#endif 4772#endif
4145 4773
4146#if EV_EMBED_ENABLE 4774#if EV_EMBED_ENABLE
4147void noinline 4775noinline
4776void
4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4777ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4149{ 4778{
4150 ev_run (w->other, EVRUN_NOWAIT); 4779 ev_run (w->other, EVRUN_NOWAIT);
4151} 4780}
4152 4781
4153static void 4782static void
… …
4201 ev_idle_stop (EV_A_ idle); 4830 ev_idle_stop (EV_A_ idle);
4202} 4831}
4203#endif 4832#endif
4204 4833
4205void 4834void
4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4835ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4207{ 4836{
4208 if (expect_false (ev_is_active (w))) 4837 if (expect_false (ev_is_active (w)))
4209 return; 4838 return;
4210 4839
4211 { 4840 {
… …
4232 4861
4233 EV_FREQUENT_CHECK; 4862 EV_FREQUENT_CHECK;
4234} 4863}
4235 4864
4236void 4865void
4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4866ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4238{ 4867{
4239 clear_pending (EV_A_ (W)w); 4868 clear_pending (EV_A_ (W)w);
4240 if (expect_false (!ev_is_active (w))) 4869 if (expect_false (!ev_is_active (w)))
4241 return; 4870 return;
4242 4871
… …
4252} 4881}
4253#endif 4882#endif
4254 4883
4255#if EV_FORK_ENABLE 4884#if EV_FORK_ENABLE
4256void 4885void
4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4886ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4258{ 4887{
4259 if (expect_false (ev_is_active (w))) 4888 if (expect_false (ev_is_active (w)))
4260 return; 4889 return;
4261 4890
4262 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4263 4892
4264 ev_start (EV_A_ (W)w, ++forkcnt); 4893 ev_start (EV_A_ (W)w, ++forkcnt);
4265 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4894 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4266 forks [forkcnt - 1] = w; 4895 forks [forkcnt - 1] = w;
4267 4896
4268 EV_FREQUENT_CHECK; 4897 EV_FREQUENT_CHECK;
4269} 4898}
4270 4899
4271void 4900void
4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4901ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4273{ 4902{
4274 clear_pending (EV_A_ (W)w); 4903 clear_pending (EV_A_ (W)w);
4275 if (expect_false (!ev_is_active (w))) 4904 if (expect_false (!ev_is_active (w)))
4276 return; 4905 return;
4277 4906
… …
4290} 4919}
4291#endif 4920#endif
4292 4921
4293#if EV_CLEANUP_ENABLE 4922#if EV_CLEANUP_ENABLE
4294void 4923void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4924ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4296{ 4925{
4297 if (expect_false (ev_is_active (w))) 4926 if (expect_false (ev_is_active (w)))
4298 return; 4927 return;
4299 4928
4300 EV_FREQUENT_CHECK; 4929 EV_FREQUENT_CHECK;
4301 4930
4302 ev_start (EV_A_ (W)w, ++cleanupcnt); 4931 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4932 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4304 cleanups [cleanupcnt - 1] = w; 4933 cleanups [cleanupcnt - 1] = w;
4305 4934
4306 /* cleanup watchers should never keep a refcount on the loop */ 4935 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A); 4936 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
4309} 4938}
4310 4939
4311void 4940void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4941ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4313{ 4942{
4314 clear_pending (EV_A_ (W)w); 4943 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w))) 4944 if (expect_false (!ev_is_active (w)))
4316 return; 4945 return;
4317 4946
… …
4331} 4960}
4332#endif 4961#endif
4333 4962
4334#if EV_ASYNC_ENABLE 4963#if EV_ASYNC_ENABLE
4335void 4964void
4336ev_async_start (EV_P_ ev_async *w) EV_THROW 4965ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4337{ 4966{
4338 if (expect_false (ev_is_active (w))) 4967 if (expect_false (ev_is_active (w)))
4339 return; 4968 return;
4340 4969
4341 w->sent = 0; 4970 w->sent = 0;
… …
4343 evpipe_init (EV_A); 4972 evpipe_init (EV_A);
4344 4973
4345 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4346 4975
4347 ev_start (EV_A_ (W)w, ++asynccnt); 4976 ev_start (EV_A_ (W)w, ++asynccnt);
4348 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4977 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4349 asyncs [asynccnt - 1] = w; 4978 asyncs [asynccnt - 1] = w;
4350 4979
4351 EV_FREQUENT_CHECK; 4980 EV_FREQUENT_CHECK;
4352} 4981}
4353 4982
4354void 4983void
4355ev_async_stop (EV_P_ ev_async *w) EV_THROW 4984ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4356{ 4985{
4357 clear_pending (EV_A_ (W)w); 4986 clear_pending (EV_A_ (W)w);
4358 if (expect_false (!ev_is_active (w))) 4987 if (expect_false (!ev_is_active (w)))
4359 return; 4988 return;
4360 4989
… …
4371 5000
4372 EV_FREQUENT_CHECK; 5001 EV_FREQUENT_CHECK;
4373} 5002}
4374 5003
4375void 5004void
4376ev_async_send (EV_P_ ev_async *w) EV_THROW 5005ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4377{ 5006{
4378 w->sent = 1; 5007 w->sent = 1;
4379 evpipe_write (EV_A_ &async_pending); 5008 evpipe_write (EV_A_ &async_pending);
4380} 5009}
4381#endif 5010#endif
… …
4418 5047
4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5048 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4420} 5049}
4421 5050
4422void 5051void
4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5052ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4424{ 5053{
4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5054 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4426
4427 if (expect_false (!once))
4428 {
4429 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4430 return;
4431 }
4432 5055
4433 once->cb = cb; 5056 once->cb = cb;
4434 once->arg = arg; 5057 once->arg = arg;
4435 5058
4436 ev_init (&once->io, once_cb_io); 5059 ev_init (&once->io, once_cb_io);
… …
4449} 5072}
4450 5073
4451/*****************************************************************************/ 5074/*****************************************************************************/
4452 5075
4453#if EV_WALK_ENABLE 5076#if EV_WALK_ENABLE
4454void ecb_cold 5077ecb_cold
5078void
4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5079ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4456{ 5080{
4457 int i, j; 5081 int i, j;
4458 ev_watcher_list *wl, *wn; 5082 ev_watcher_list *wl, *wn;
4459 5083
4460 if (types & (EV_IO | EV_EMBED)) 5084 if (types & (EV_IO | EV_EMBED))

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