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Comparing libev/ev.c (file contents):
Revision 1.438 by root, Tue May 29 21:03:44 2012 UTC vs.
Revision 1.491 by root, Thu Jun 20 23:14:53 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# define EV_USE_LINUXAIO 0
331#endif
332
312#ifndef EV_USE_INOTIFY 333#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 335# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 336# else
316# define EV_USE_INOTIFY 0 337# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 376# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 377#endif
357 378
358#ifndef EV_HEAP_CACHE_AT 379#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 380# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
381#endif
382
383#ifdef __ANDROID__
384/* supposedly, android doesn't typedef fd_mask */
385# undef EV_USE_SELECT
386# define EV_USE_SELECT 0
387/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
388# undef EV_USE_CLOCK_SYSCALL
389# define EV_USE_CLOCK_SYSCALL 0
390#endif
391
392/* aix's poll.h seems to cause lots of trouble */
393#ifdef _AIX
394/* AIX has a completely broken poll.h header */
395# undef EV_USE_POLL
396# define EV_USE_POLL 0
397#endif
398
399#if EV_USE_LINUXAIO
400# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
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
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
… …
1070#else 1613#else
1071 1614
1072#include <float.h> 1615#include <float.h>
1073 1616
1074/* a floor() replacement function, should be independent of ev_tstamp type */ 1617/* a floor() replacement function, should be independent of ev_tstamp type */
1618noinline
1075static ev_tstamp noinline 1619static ev_tstamp
1076ev_floor (ev_tstamp v) 1620ev_floor (ev_tstamp v)
1077{ 1621{
1078 /* the choice of shift factor is not terribly important */ 1622 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1623#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1624 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1112 1656
1113#ifdef __linux 1657#ifdef __linux
1114# include <sys/utsname.h> 1658# include <sys/utsname.h>
1115#endif 1659#endif
1116 1660
1117static unsigned int noinline ecb_cold 1661noinline ecb_cold
1662static unsigned int
1118ev_linux_version (void) 1663ev_linux_version (void)
1119{ 1664{
1120#ifdef __linux 1665#ifdef __linux
1121 unsigned int v = 0; 1666 unsigned int v = 0;
1122 struct utsname buf; 1667 struct utsname buf;
… …
1151} 1696}
1152 1697
1153/*****************************************************************************/ 1698/*****************************************************************************/
1154 1699
1155#if EV_AVOID_STDIO 1700#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1701noinline ecb_cold
1702static void
1157ev_printerr (const char *msg) 1703ev_printerr (const char *msg)
1158{ 1704{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1705 write (STDERR_FILENO, msg, strlen (msg));
1160} 1706}
1161#endif 1707#endif
1162 1708
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1709static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1164 1710
1165void ecb_cold 1711ecb_cold
1712void
1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1713ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1167{ 1714{
1168 syserr_cb = cb; 1715 syserr_cb = cb;
1169} 1716}
1170 1717
1171static void noinline ecb_cold 1718noinline ecb_cold
1719static void
1172ev_syserr (const char *msg) 1720ev_syserr (const char *msg)
1173{ 1721{
1174 if (!msg) 1722 if (!msg)
1175 msg = "(libev) system error"; 1723 msg = "(libev) system error";
1176 1724
… …
1189 abort (); 1737 abort ();
1190 } 1738 }
1191} 1739}
1192 1740
1193static void * 1741static void *
1194ev_realloc_emul (void *ptr, long size) EV_THROW 1742ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1195{ 1743{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
1199 /* some systems, notably openbsd and darwin, fail to properly 1744 /* some systems, notably openbsd and darwin, fail to properly
1200 * implement realloc (x, 0) (as required by both ansi c-89 and 1745 * implement realloc (x, 0) (as required by both ansi c-89 and
1201 * the single unix specification, so work around them here. 1746 * the single unix specification, so work around them here.
1747 * recently, also (at least) fedora and debian started breaking it,
1748 * despite documenting it otherwise.
1202 */ 1749 */
1203 1750
1204 if (size) 1751 if (size)
1205 return realloc (ptr, size); 1752 return realloc (ptr, size);
1206 1753
1207 free (ptr); 1754 free (ptr);
1208 return 0; 1755 return 0;
1209#endif
1210} 1756}
1211 1757
1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1758static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1213 1759
1214void ecb_cold 1760ecb_cold
1761void
1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1762ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1216{ 1763{
1217 alloc = cb; 1764 alloc = cb;
1218} 1765}
1219 1766
1220inline_speed void * 1767inline_speed void *
… …
1247typedef struct 1794typedef struct
1248{ 1795{
1249 WL head; 1796 WL head;
1250 unsigned char events; /* the events watched for */ 1797 unsigned char events; /* the events watched for */
1251 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1798 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 */ 1799 unsigned char emask; /* some backends store the actual kernel mask in here */
1253 unsigned char unused; 1800 unsigned char unused;
1254#if EV_USE_EPOLL 1801#if EV_USE_EPOLL
1255 unsigned int egen; /* generation counter to counter epoll bugs */ 1802 unsigned int egen; /* generation counter to counter epoll bugs */
1256#endif 1803#endif
1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1804#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1337 1884
1338/*****************************************************************************/ 1885/*****************************************************************************/
1339 1886
1340#ifndef EV_HAVE_EV_TIME 1887#ifndef EV_HAVE_EV_TIME
1341ev_tstamp 1888ev_tstamp
1342ev_time (void) EV_THROW 1889ev_time (void) EV_NOEXCEPT
1343{ 1890{
1344#if EV_USE_REALTIME 1891#if EV_USE_REALTIME
1345 if (expect_true (have_realtime)) 1892 if (expect_true (have_realtime))
1346 { 1893 {
1347 struct timespec ts; 1894 struct timespec ts;
… …
1371 return ev_time (); 1918 return ev_time ();
1372} 1919}
1373 1920
1374#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1375ev_tstamp 1922ev_tstamp
1376ev_now (EV_P) EV_THROW 1923ev_now (EV_P) EV_NOEXCEPT
1377{ 1924{
1378 return ev_rt_now; 1925 return ev_rt_now;
1379} 1926}
1380#endif 1927#endif
1381 1928
1382void 1929void
1383ev_sleep (ev_tstamp delay) EV_THROW 1930ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1384{ 1931{
1385 if (delay > 0.) 1932 if (delay > 0.)
1386 { 1933 {
1387#if EV_USE_NANOSLEEP 1934#if EV_USE_NANOSLEEP
1388 struct timespec ts; 1935 struct timespec ts;
1389 1936
1390 EV_TS_SET (ts, delay); 1937 EV_TS_SET (ts, delay);
1391 nanosleep (&ts, 0); 1938 nanosleep (&ts, 0);
1392#elif defined _WIN32 1939#elif defined _WIN32
1940 /* maybe this should round up, as ms is very low resolution */
1941 /* compared to select (µs) or nanosleep (ns) */
1393 Sleep ((unsigned long)(delay * 1e3)); 1942 Sleep ((unsigned long)(delay * 1e3));
1394#else 1943#else
1395 struct timeval tv; 1944 struct timeval tv;
1396 1945
1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1946 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1428 } 1977 }
1429 1978
1430 return ncur; 1979 return ncur;
1431} 1980}
1432 1981
1433static void * noinline ecb_cold 1982noinline ecb_cold
1983static void *
1434array_realloc (int elem, void *base, int *cur, int cnt) 1984array_realloc (int elem, void *base, int *cur, int cnt)
1435{ 1985{
1436 *cur = array_nextsize (elem, *cur, cnt); 1986 *cur = array_nextsize (elem, *cur, cnt);
1437 return ev_realloc (base, elem * *cur); 1987 return ev_realloc (base, elem * *cur);
1438} 1988}
1439 1989
1990#define array_needsize_noinit(base,count)
1991
1440#define array_init_zero(base,count) \ 1992#define array_needsize_zerofill(base,count) \
1441 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1993 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1442 1994
1443#define array_needsize(type,base,cur,cnt,init) \ 1995#define array_needsize(type,base,cur,cnt,init) \
1444 if (expect_false ((cnt) > (cur))) \ 1996 if (expect_false ((cnt) > (cur))) \
1445 { \ 1997 { \
1446 int ecb_unused ocur_ = (cur); \ 1998 ecb_unused int ocur_ = (cur); \
1447 (base) = (type *)array_realloc \ 1999 (base) = (type *)array_realloc \
1448 (sizeof (type), (base), &(cur), (cnt)); \ 2000 (sizeof (type), (base), &(cur), (cnt)); \
1449 init ((base) + (ocur_), (cur) - ocur_); \ 2001 init ((base) + (ocur_), (cur) - ocur_); \
1450 } 2002 }
1451 2003
… …
1463 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2015 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1464 2016
1465/*****************************************************************************/ 2017/*****************************************************************************/
1466 2018
1467/* dummy callback for pending events */ 2019/* dummy callback for pending events */
1468static void noinline 2020noinline
2021static void
1469pendingcb (EV_P_ ev_prepare *w, int revents) 2022pendingcb (EV_P_ ev_prepare *w, int revents)
1470{ 2023{
1471} 2024}
1472 2025
1473void noinline 2026noinline
2027void
1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2028ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1475{ 2029{
1476 W w_ = (W)w; 2030 W w_ = (W)w;
1477 int pri = ABSPRI (w_); 2031 int pri = ABSPRI (w_);
1478 2032
1479 if (expect_false (w_->pending)) 2033 if (expect_false (w_->pending))
1480 pendings [pri][w_->pending - 1].events |= revents; 2034 pendings [pri][w_->pending - 1].events |= revents;
1481 else 2035 else
1482 { 2036 {
1483 w_->pending = ++pendingcnt [pri]; 2037 w_->pending = ++pendingcnt [pri];
1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2038 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1485 pendings [pri][w_->pending - 1].w = w_; 2039 pendings [pri][w_->pending - 1].w = w_;
1486 pendings [pri][w_->pending - 1].events = revents; 2040 pendings [pri][w_->pending - 1].events = revents;
1487 } 2041 }
1488 2042
1489 pendingpri = NUMPRI - 1; 2043 pendingpri = NUMPRI - 1;
1490} 2044}
1491 2045
1492inline_speed void 2046inline_speed void
1493feed_reverse (EV_P_ W w) 2047feed_reverse (EV_P_ W w)
1494{ 2048{
1495 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2049 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1496 rfeeds [rfeedcnt++] = w; 2050 rfeeds [rfeedcnt++] = w;
1497} 2051}
1498 2052
1499inline_size void 2053inline_size void
1500feed_reverse_done (EV_P_ int revents) 2054feed_reverse_done (EV_P_ int revents)
… …
1540 if (expect_true (!anfd->reify)) 2094 if (expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents); 2095 fd_event_nocheck (EV_A_ fd, revents);
1542} 2096}
1543 2097
1544void 2098void
1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2099ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1546{ 2100{
1547 if (fd >= 0 && fd < anfdmax) 2101 if (fd >= 0 && fd < anfdmax)
1548 fd_event_nocheck (EV_A_ fd, revents); 2102 fd_event_nocheck (EV_A_ fd, revents);
1549} 2103}
1550 2104
… …
1608 2162
1609 fdchangecnt = 0; 2163 fdchangecnt = 0;
1610} 2164}
1611 2165
1612/* something about the given fd changed */ 2166/* something about the given fd changed */
1613inline_size void 2167inline_size
2168void
1614fd_change (EV_P_ int fd, int flags) 2169fd_change (EV_P_ int fd, int flags)
1615{ 2170{
1616 unsigned char reify = anfds [fd].reify; 2171 unsigned char reify = anfds [fd].reify;
1617 anfds [fd].reify |= flags; 2172 anfds [fd].reify |= flags;
1618 2173
1619 if (expect_true (!reify)) 2174 if (expect_true (!reify))
1620 { 2175 {
1621 ++fdchangecnt; 2176 ++fdchangecnt;
1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2177 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1623 fdchanges [fdchangecnt - 1] = fd; 2178 fdchanges [fdchangecnt - 1] = fd;
1624 } 2179 }
1625} 2180}
1626 2181
1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2182/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1628inline_speed void ecb_cold 2183inline_speed ecb_cold void
1629fd_kill (EV_P_ int fd) 2184fd_kill (EV_P_ int fd)
1630{ 2185{
1631 ev_io *w; 2186 ev_io *w;
1632 2187
1633 while ((w = (ev_io *)anfds [fd].head)) 2188 while ((w = (ev_io *)anfds [fd].head))
… …
1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2191 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1637 } 2192 }
1638} 2193}
1639 2194
1640/* check whether the given fd is actually valid, for error recovery */ 2195/* check whether the given fd is actually valid, for error recovery */
1641inline_size int ecb_cold 2196inline_size ecb_cold int
1642fd_valid (int fd) 2197fd_valid (int fd)
1643{ 2198{
1644#ifdef _WIN32 2199#ifdef _WIN32
1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2200 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1646#else 2201#else
1647 return fcntl (fd, F_GETFD) != -1; 2202 return fcntl (fd, F_GETFD) != -1;
1648#endif 2203#endif
1649} 2204}
1650 2205
1651/* called on EBADF to verify fds */ 2206/* called on EBADF to verify fds */
1652static void noinline ecb_cold 2207noinline ecb_cold
2208static void
1653fd_ebadf (EV_P) 2209fd_ebadf (EV_P)
1654{ 2210{
1655 int fd; 2211 int fd;
1656 2212
1657 for (fd = 0; fd < anfdmax; ++fd) 2213 for (fd = 0; fd < anfdmax; ++fd)
… …
1659 if (!fd_valid (fd) && errno == EBADF) 2215 if (!fd_valid (fd) && errno == EBADF)
1660 fd_kill (EV_A_ fd); 2216 fd_kill (EV_A_ fd);
1661} 2217}
1662 2218
1663/* called on ENOMEM in select/poll to kill some fds and retry */ 2219/* called on ENOMEM in select/poll to kill some fds and retry */
1664static void noinline ecb_cold 2220noinline ecb_cold
2221static void
1665fd_enomem (EV_P) 2222fd_enomem (EV_P)
1666{ 2223{
1667 int fd; 2224 int fd;
1668 2225
1669 for (fd = anfdmax; fd--; ) 2226 for (fd = anfdmax; fd--; )
… …
1673 break; 2230 break;
1674 } 2231 }
1675} 2232}
1676 2233
1677/* usually called after fork if backend needs to re-arm all fds from scratch */ 2234/* usually called after fork if backend needs to re-arm all fds from scratch */
1678static void noinline 2235noinline
2236static void
1679fd_rearm_all (EV_P) 2237fd_rearm_all (EV_P)
1680{ 2238{
1681 int fd; 2239 int fd;
1682 2240
1683 for (fd = 0; fd < anfdmax; ++fd) 2241 for (fd = 0; fd < anfdmax; ++fd)
… …
1864 2422
1865/*****************************************************************************/ 2423/*****************************************************************************/
1866 2424
1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2425#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1868 2426
1869static void noinline ecb_cold 2427noinline ecb_cold
2428static void
1870evpipe_init (EV_P) 2429evpipe_init (EV_P)
1871{ 2430{
1872 if (!ev_is_active (&pipe_w)) 2431 if (!ev_is_active (&pipe_w))
1873 { 2432 {
2433 int fds [2];
2434
1874# if EV_USE_EVENTFD 2435# if EV_USE_EVENTFD
2436 fds [0] = -1;
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2437 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL) 2438 if (fds [1] < 0 && errno == EINVAL)
1877 evfd = eventfd (0, 0); 2439 fds [1] = eventfd (0, 0);
1878 2440
1879 if (evfd >= 0) 2441 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 2442# endif
1887 { 2443 {
1888 while (pipe (evpipe)) 2444 while (pipe (fds))
1889 ev_syserr ("(libev) error creating signal/async pipe"); 2445 ev_syserr ("(libev) error creating signal/async pipe");
1890 2446
1891 fd_intern (evpipe [0]); 2447 fd_intern (fds [0]);
1892 fd_intern (evpipe [1]);
1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1894 } 2448 }
1895 2449
2450 evpipe [0] = fds [0];
2451
2452 if (evpipe [1] < 0)
2453 evpipe [1] = fds [1]; /* first call, set write fd */
2454 else
2455 {
2456 /* on subsequent calls, do not change evpipe [1] */
2457 /* so that evpipe_write can always rely on its value. */
2458 /* this branch does not do anything sensible on windows, */
2459 /* so must not be executed on windows */
2460
2461 dup2 (fds [1], evpipe [1]);
2462 close (fds [1]);
2463 }
2464
2465 fd_intern (evpipe [1]);
2466
2467 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1896 ev_io_start (EV_A_ &pipe_w); 2468 ev_io_start (EV_A_ &pipe_w);
1897 ev_unref (EV_A); /* watcher should not keep loop alive */ 2469 ev_unref (EV_A); /* watcher should not keep loop alive */
1898 } 2470 }
1899} 2471}
1900 2472
… …
1921 ECB_MEMORY_FENCE_RELEASE; 2493 ECB_MEMORY_FENCE_RELEASE;
1922 2494
1923 old_errno = errno; /* save errno because write will clobber it */ 2495 old_errno = errno; /* save errno because write will clobber it */
1924 2496
1925#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1926 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1927 { 2499 {
1928 uint64_t counter = 1; 2500 uint64_t counter = 1;
1929 write (evfd, &counter, sizeof (uint64_t)); 2501 write (evpipe [1], &counter, sizeof (uint64_t));
1930 } 2502 }
1931 else 2503 else
1932#endif 2504#endif
1933 { 2505 {
1934#ifdef _WIN32 2506#ifdef _WIN32
1935 WSABUF buf; 2507 WSABUF buf;
1936 DWORD sent; 2508 DWORD sent;
1937 buf.buf = &buf; 2509 buf.buf = (char *)&buf;
1938 buf.len = 1; 2510 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2511 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else 2512#else
1941 write (evpipe [1], &(evpipe [1]), 1); 2513 write (evpipe [1], &(evpipe [1]), 1);
1942#endif 2514#endif
… …
1954 int i; 2526 int i;
1955 2527
1956 if (revents & EV_READ) 2528 if (revents & EV_READ)
1957 { 2529 {
1958#if EV_USE_EVENTFD 2530#if EV_USE_EVENTFD
1959 if (evfd >= 0) 2531 if (evpipe [0] < 0)
1960 { 2532 {
1961 uint64_t counter; 2533 uint64_t counter;
1962 read (evfd, &counter, sizeof (uint64_t)); 2534 read (evpipe [1], &counter, sizeof (uint64_t));
1963 } 2535 }
1964 else 2536 else
1965#endif 2537#endif
1966 { 2538 {
1967 char dummy[4]; 2539 char dummy[4];
… …
2014} 2586}
2015 2587
2016/*****************************************************************************/ 2588/*****************************************************************************/
2017 2589
2018void 2590void
2019ev_feed_signal (int signum) EV_THROW 2591ev_feed_signal (int signum) EV_NOEXCEPT
2020{ 2592{
2021#if EV_MULTIPLICITY 2593#if EV_MULTIPLICITY
2594 EV_P;
2595 ECB_MEMORY_FENCE_ACQUIRE;
2022 EV_P = signals [signum - 1].loop; 2596 EV_A = signals [signum - 1].loop;
2023 2597
2024 if (!EV_A) 2598 if (!EV_A)
2025 return; 2599 return;
2026#endif 2600#endif
2027 2601
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1; 2602 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending); 2603 evpipe_write (EV_A_ &sig_pending);
2033} 2604}
2034 2605
2035static void 2606static void
… …
2040#endif 2611#endif
2041 2612
2042 ev_feed_signal (signum); 2613 ev_feed_signal (signum);
2043} 2614}
2044 2615
2045void noinline 2616noinline
2617void
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW 2618ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2047{ 2619{
2048 WL w; 2620 WL w;
2049 2621
2050 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2622 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2051 return; 2623 return;
2052 2624
2053 --signum; 2625 --signum;
2054 2626
2055#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
… …
2157# include "ev_port.c" 2729# include "ev_port.c"
2158#endif 2730#endif
2159#if EV_USE_KQUEUE 2731#if EV_USE_KQUEUE
2160# include "ev_kqueue.c" 2732# include "ev_kqueue.c"
2161#endif 2733#endif
2734#if EV_USE_LINUXAIO
2735# include "ev_linuxaio.c"
2736#endif
2162#if EV_USE_EPOLL 2737#if EV_USE_EPOLL
2163# include "ev_epoll.c" 2738# include "ev_epoll.c"
2164#endif 2739#endif
2165#if EV_USE_POLL 2740#if EV_USE_POLL
2166# include "ev_poll.c" 2741# include "ev_poll.c"
2167#endif 2742#endif
2168#if EV_USE_SELECT 2743#if EV_USE_SELECT
2169# include "ev_select.c" 2744# include "ev_select.c"
2170#endif 2745#endif
2171 2746
2172int ecb_cold 2747ecb_cold int
2173ev_version_major (void) EV_THROW 2748ev_version_major (void) EV_NOEXCEPT
2174{ 2749{
2175 return EV_VERSION_MAJOR; 2750 return EV_VERSION_MAJOR;
2176} 2751}
2177 2752
2178int ecb_cold 2753ecb_cold int
2179ev_version_minor (void) EV_THROW 2754ev_version_minor (void) EV_NOEXCEPT
2180{ 2755{
2181 return EV_VERSION_MINOR; 2756 return EV_VERSION_MINOR;
2182} 2757}
2183 2758
2184/* return true if we are running with elevated privileges and should ignore env variables */ 2759/* return true if we are running with elevated privileges and should ignore env variables */
2185int inline_size ecb_cold 2760inline_size ecb_cold int
2186enable_secure (void) 2761enable_secure (void)
2187{ 2762{
2188#ifdef _WIN32 2763#ifdef _WIN32
2189 return 0; 2764 return 0;
2190#else 2765#else
2191 return getuid () != geteuid () 2766 return getuid () != geteuid ()
2192 || getgid () != getegid (); 2767 || getgid () != getegid ();
2193#endif 2768#endif
2194} 2769}
2195 2770
2196unsigned int ecb_cold 2771ecb_cold
2772unsigned int
2197ev_supported_backends (void) EV_THROW 2773ev_supported_backends (void) EV_NOEXCEPT
2198{ 2774{
2199 unsigned int flags = 0; 2775 unsigned int flags = 0;
2200 2776
2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2777 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2778 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2203 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2779 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2780 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2204 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2781 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2782 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2206 2783
2207 return flags; 2784 return flags;
2208} 2785}
2209 2786
2210unsigned int ecb_cold 2787ecb_cold
2788unsigned int
2211ev_recommended_backends (void) EV_THROW 2789ev_recommended_backends (void) EV_NOEXCEPT
2212{ 2790{
2213 unsigned int flags = ev_supported_backends (); 2791 unsigned int flags = ev_supported_backends ();
2214 2792
2215#ifndef __NetBSD__ 2793#ifndef __NetBSD__
2216 /* kqueue is borked on everything but netbsd apparently */ 2794 /* kqueue is borked on everything but netbsd apparently */
… …
2224#endif 2802#endif
2225#ifdef __FreeBSD__ 2803#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2804 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif 2805#endif
2228 2806
2807 /* TODO: linuxaio is very experimental */
2808 flags &= ~EVBACKEND_LINUXAIO;
2809
2229 return flags; 2810 return flags;
2230} 2811}
2231 2812
2232unsigned int ecb_cold 2813ecb_cold
2814unsigned int
2233ev_embeddable_backends (void) EV_THROW 2815ev_embeddable_backends (void) EV_NOEXCEPT
2234{ 2816{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2817 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236 2818
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2819 /* 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 */ 2820 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2240 2822
2241 return flags; 2823 return flags;
2242} 2824}
2243 2825
2244unsigned int 2826unsigned int
2245ev_backend (EV_P) EV_THROW 2827ev_backend (EV_P) EV_NOEXCEPT
2246{ 2828{
2247 return backend; 2829 return backend;
2248} 2830}
2249 2831
2250#if EV_FEATURE_API 2832#if EV_FEATURE_API
2251unsigned int 2833unsigned int
2252ev_iteration (EV_P) EV_THROW 2834ev_iteration (EV_P) EV_NOEXCEPT
2253{ 2835{
2254 return loop_count; 2836 return loop_count;
2255} 2837}
2256 2838
2257unsigned int 2839unsigned int
2258ev_depth (EV_P) EV_THROW 2840ev_depth (EV_P) EV_NOEXCEPT
2259{ 2841{
2260 return loop_depth; 2842 return loop_depth;
2261} 2843}
2262 2844
2263void 2845void
2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2846ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2265{ 2847{
2266 io_blocktime = interval; 2848 io_blocktime = interval;
2267} 2849}
2268 2850
2269void 2851void
2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2852ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2271{ 2853{
2272 timeout_blocktime = interval; 2854 timeout_blocktime = interval;
2273} 2855}
2274 2856
2275void 2857void
2276ev_set_userdata (EV_P_ void *data) EV_THROW 2858ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2277{ 2859{
2278 userdata = data; 2860 userdata = data;
2279} 2861}
2280 2862
2281void * 2863void *
2282ev_userdata (EV_P) EV_THROW 2864ev_userdata (EV_P) EV_NOEXCEPT
2283{ 2865{
2284 return userdata; 2866 return userdata;
2285} 2867}
2286 2868
2287void 2869void
2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2870ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2289{ 2871{
2290 invoke_cb = invoke_pending_cb; 2872 invoke_cb = invoke_pending_cb;
2291} 2873}
2292 2874
2293void 2875void
2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2876ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2295{ 2877{
2296 release_cb = release; 2878 release_cb = release;
2297 acquire_cb = acquire; 2879 acquire_cb = acquire;
2298} 2880}
2299#endif 2881#endif
2300 2882
2301/* initialise a loop structure, must be zero-initialised */ 2883/* initialise a loop structure, must be zero-initialised */
2302static void noinline ecb_cold 2884noinline ecb_cold
2885static void
2303loop_init (EV_P_ unsigned int flags) EV_THROW 2886loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2304{ 2887{
2305 if (!backend) 2888 if (!backend)
2306 { 2889 {
2307 origflags = flags; 2890 origflags = flags;
2308 2891
… …
2353#if EV_ASYNC_ENABLE 2936#if EV_ASYNC_ENABLE
2354 async_pending = 0; 2937 async_pending = 0;
2355#endif 2938#endif
2356 pipe_write_skipped = 0; 2939 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0; 2940 pipe_write_wanted = 0;
2941 evpipe [0] = -1;
2942 evpipe [1] = -1;
2358#if EV_USE_INOTIFY 2943#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2944 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif 2945#endif
2361#if EV_USE_SIGNALFD 2946#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2947 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2364 2949
2365 if (!(flags & EVBACKEND_MASK)) 2950 if (!(flags & EVBACKEND_MASK))
2366 flags |= ev_recommended_backends (); 2951 flags |= ev_recommended_backends ();
2367 2952
2368#if EV_USE_IOCP 2953#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2954 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif 2955#endif
2371#if EV_USE_PORT 2956#if EV_USE_PORT
2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2957 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2373#endif 2958#endif
2374#if EV_USE_KQUEUE 2959#if EV_USE_KQUEUE
2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2961#endif
2962#if EV_USE_LINUXAIO
2963 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2376#endif 2964#endif
2377#if EV_USE_EPOLL 2965#if EV_USE_EPOLL
2378 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2379#endif 2967#endif
2380#if EV_USE_POLL 2968#if EV_USE_POLL
2381 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2382#endif 2970#endif
2383#if EV_USE_SELECT 2971#if EV_USE_SELECT
2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2385#endif 2973#endif
2386 2974
2387 ev_prepare_init (&pending_w, pendingcb); 2975 ev_prepare_init (&pending_w, pendingcb);
2388 2976
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2977#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2392#endif 2980#endif
2393 } 2981 }
2394} 2982}
2395 2983
2396/* free up a loop structure */ 2984/* free up a loop structure */
2397void ecb_cold 2985ecb_cold
2986void
2398ev_loop_destroy (EV_P) 2987ev_loop_destroy (EV_P)
2399{ 2988{
2400 int i; 2989 int i;
2401 2990
2402#if EV_MULTIPLICITY 2991#if EV_MULTIPLICITY
… …
2425 if (ev_is_active (&pipe_w)) 3014 if (ev_is_active (&pipe_w))
2426 { 3015 {
2427 /*ev_ref (EV_A);*/ 3016 /*ev_ref (EV_A);*/
2428 /*ev_io_stop (EV_A_ &pipe_w);*/ 3017 /*ev_io_stop (EV_A_ &pipe_w);*/
2429 3018
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]); 3019 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2438 EV_WIN32_CLOSE_FD (evpipe [1]); 3020 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2439 }
2440 } 3021 }
2441 3022
2442#if EV_USE_SIGNALFD 3023#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w)) 3024 if (ev_is_active (&sigfd_w))
2444 close (sigfd); 3025 close (sigfd);
… …
2451 3032
2452 if (backend_fd >= 0) 3033 if (backend_fd >= 0)
2453 close (backend_fd); 3034 close (backend_fd);
2454 3035
2455#if EV_USE_IOCP 3036#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3037 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif 3038#endif
2458#if EV_USE_PORT 3039#if EV_USE_PORT
2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3040 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2460#endif 3041#endif
2461#if EV_USE_KQUEUE 3042#if EV_USE_KQUEUE
2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3043 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3044#endif
3045#if EV_USE_LINUXAIO
3046 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2463#endif 3047#endif
2464#if EV_USE_EPOLL 3048#if EV_USE_EPOLL
2465 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3049 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2466#endif 3050#endif
2467#if EV_USE_POLL 3051#if EV_USE_POLL
2468 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3052 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2469#endif 3053#endif
2470#if EV_USE_SELECT 3054#if EV_USE_SELECT
2471 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3055 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2472#endif 3056#endif
2473 3057
2474 for (i = NUMPRI; i--; ) 3058 for (i = NUMPRI; i--; )
2475 { 3059 {
2476 array_free (pending, [i]); 3060 array_free (pending, [i]);
… …
2518 3102
2519inline_size void 3103inline_size void
2520loop_fork (EV_P) 3104loop_fork (EV_P)
2521{ 3105{
2522#if EV_USE_PORT 3106#if EV_USE_PORT
2523 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3107 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2524#endif 3108#endif
2525#if EV_USE_KQUEUE 3109#if EV_USE_KQUEUE
2526 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3110 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3111#endif
3112#if EV_USE_LINUXAIO
3113 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2527#endif 3114#endif
2528#if EV_USE_EPOLL 3115#if EV_USE_EPOLL
2529 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3116 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2530#endif 3117#endif
2531#if EV_USE_INOTIFY 3118#if EV_USE_INOTIFY
2532 infy_fork (EV_A); 3119 infy_fork (EV_A);
2533#endif 3120#endif
2534 3121
3122#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2535 if (ev_is_active (&pipe_w)) 3123 if (ev_is_active (&pipe_w) && postfork != 2)
2536 { 3124 {
2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3125 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2538 3126
2539 ev_ref (EV_A); 3127 ev_ref (EV_A);
2540 ev_io_stop (EV_A_ &pipe_w); 3128 ev_io_stop (EV_A_ &pipe_w);
2541 3129
2542#if EV_USE_EVENTFD
2543 if (evfd >= 0)
2544 close (evfd);
2545#endif
2546
2547 if (evpipe [0] >= 0) 3130 if (evpipe [0] >= 0)
2548 {
2549 EV_WIN32_CLOSE_FD (evpipe [0]); 3131 EV_WIN32_CLOSE_FD (evpipe [0]);
2550 EV_WIN32_CLOSE_FD (evpipe [1]);
2551 }
2552 3132
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2554 evpipe_init (EV_A); 3133 evpipe_init (EV_A);
2555 /* now iterate over everything, in case we missed something */ 3134 /* iterate over everything, in case we missed something before */
2556 pipecb (EV_A_ &pipe_w, EV_READ); 3135 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
2558 } 3136 }
3137#endif
2559 3138
2560 postfork = 0; 3139 postfork = 0;
2561} 3140}
2562 3141
2563#if EV_MULTIPLICITY 3142#if EV_MULTIPLICITY
2564 3143
3144ecb_cold
2565struct ev_loop * ecb_cold 3145struct ev_loop *
2566ev_loop_new (unsigned int flags) EV_THROW 3146ev_loop_new (unsigned int flags) EV_NOEXCEPT
2567{ 3147{
2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3148 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2569 3149
2570 memset (EV_A, 0, sizeof (struct ev_loop)); 3150 memset (EV_A, 0, sizeof (struct ev_loop));
2571 loop_init (EV_A_ flags); 3151 loop_init (EV_A_ flags);
… …
2578} 3158}
2579 3159
2580#endif /* multiplicity */ 3160#endif /* multiplicity */
2581 3161
2582#if EV_VERIFY 3162#if EV_VERIFY
2583static void noinline ecb_cold 3163noinline ecb_cold
3164static void
2584verify_watcher (EV_P_ W w) 3165verify_watcher (EV_P_ W w)
2585{ 3166{
2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3167 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2587 3168
2588 if (w->pending) 3169 if (w->pending)
2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3170 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2590} 3171}
2591 3172
2592static void noinline ecb_cold 3173noinline ecb_cold
3174static void
2593verify_heap (EV_P_ ANHE *heap, int N) 3175verify_heap (EV_P_ ANHE *heap, int N)
2594{ 3176{
2595 int i; 3177 int i;
2596 3178
2597 for (i = HEAP0; i < N + HEAP0; ++i) 3179 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2602 3184
2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3185 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2604 } 3186 }
2605} 3187}
2606 3188
2607static void noinline ecb_cold 3189noinline ecb_cold
3190static void
2608array_verify (EV_P_ W *ws, int cnt) 3191array_verify (EV_P_ W *ws, int cnt)
2609{ 3192{
2610 while (cnt--) 3193 while (cnt--)
2611 { 3194 {
2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3195 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2615} 3198}
2616#endif 3199#endif
2617 3200
2618#if EV_FEATURE_API 3201#if EV_FEATURE_API
2619void ecb_cold 3202void ecb_cold
2620ev_verify (EV_P) EV_THROW 3203ev_verify (EV_P) EV_NOEXCEPT
2621{ 3204{
2622#if EV_VERIFY 3205#if EV_VERIFY
2623 int i; 3206 int i;
2624 WL w, w2; 3207 WL w, w2;
2625 3208
… …
2701#endif 3284#endif
2702} 3285}
2703#endif 3286#endif
2704 3287
2705#if EV_MULTIPLICITY 3288#if EV_MULTIPLICITY
3289ecb_cold
2706struct ev_loop * ecb_cold 3290struct ev_loop *
2707#else 3291#else
2708int 3292int
2709#endif 3293#endif
2710ev_default_loop (unsigned int flags) EV_THROW 3294ev_default_loop (unsigned int flags) EV_NOEXCEPT
2711{ 3295{
2712 if (!ev_default_loop_ptr) 3296 if (!ev_default_loop_ptr)
2713 { 3297 {
2714#if EV_MULTIPLICITY 3298#if EV_MULTIPLICITY
2715 EV_P = ev_default_loop_ptr = &default_loop_struct; 3299 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2734 3318
2735 return ev_default_loop_ptr; 3319 return ev_default_loop_ptr;
2736} 3320}
2737 3321
2738void 3322void
2739ev_loop_fork (EV_P) EV_THROW 3323ev_loop_fork (EV_P) EV_NOEXCEPT
2740{ 3324{
2741 postfork = 1; /* must be in line with ev_default_fork */ 3325 postfork = 1;
2742} 3326}
2743 3327
2744/*****************************************************************************/ 3328/*****************************************************************************/
2745 3329
2746void 3330void
… …
2748{ 3332{
2749 EV_CB_INVOKE ((W)w, revents); 3333 EV_CB_INVOKE ((W)w, revents);
2750} 3334}
2751 3335
2752unsigned int 3336unsigned int
2753ev_pending_count (EV_P) EV_THROW 3337ev_pending_count (EV_P) EV_NOEXCEPT
2754{ 3338{
2755 int pri; 3339 int pri;
2756 unsigned int count = 0; 3340 unsigned int count = 0;
2757 3341
2758 for (pri = NUMPRI; pri--; ) 3342 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri]; 3343 count += pendingcnt [pri];
2760 3344
2761 return count; 3345 return count;
2762} 3346}
2763 3347
2764void noinline 3348noinline
3349void
2765ev_invoke_pending (EV_P) 3350ev_invoke_pending (EV_P)
2766{ 3351{
2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3352 pendingpri = NUMPRI;
3353
3354 do
3355 {
3356 --pendingpri;
3357
3358 /* pendingpri possibly gets modified in the inner loop */
2768 while (pendingcnt [pendingpri]) 3359 while (pendingcnt [pendingpri])
2769 { 3360 {
2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3361 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2771 3362
2772 p->w->pending = 0; 3363 p->w->pending = 0;
2773 EV_CB_INVOKE (p->w, p->events); 3364 EV_CB_INVOKE (p->w, p->events);
2774 EV_FREQUENT_CHECK; 3365 EV_FREQUENT_CHECK;
2775 } 3366 }
3367 }
3368 while (pendingpri);
2776} 3369}
2777 3370
2778#if EV_IDLE_ENABLE 3371#if EV_IDLE_ENABLE
2779/* make idle watchers pending. this handles the "call-idle */ 3372/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */ 3373/* only when higher priorities are idle" logic */
… …
2838 } 3431 }
2839} 3432}
2840 3433
2841#if EV_PERIODIC_ENABLE 3434#if EV_PERIODIC_ENABLE
2842 3435
2843static void noinline 3436noinline
3437static void
2844periodic_recalc (EV_P_ ev_periodic *w) 3438periodic_recalc (EV_P_ ev_periodic *w)
2845{ 3439{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3440 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); 3441 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848 3442
… …
2906 } 3500 }
2907} 3501}
2908 3502
2909/* simply recalculate all periodics */ 3503/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3504/* TODO: maybe ensure that at least one event happens when jumping forward? */
2911static void noinline ecb_cold 3505noinline ecb_cold
3506static void
2912periodics_reschedule (EV_P) 3507periodics_reschedule (EV_P)
2913{ 3508{
2914 int i; 3509 int i;
2915 3510
2916 /* adjust periodics after time jump */ 3511 /* adjust periodics after time jump */
… …
2929 reheap (periodics, periodiccnt); 3524 reheap (periodics, periodiccnt);
2930} 3525}
2931#endif 3526#endif
2932 3527
2933/* adjust all timers by a given offset */ 3528/* adjust all timers by a given offset */
2934static void noinline ecb_cold 3529noinline ecb_cold
3530static void
2935timers_reschedule (EV_P_ ev_tstamp adjust) 3531timers_reschedule (EV_P_ ev_tstamp adjust)
2936{ 3532{
2937 int i; 3533 int i;
2938 3534
2939 for (i = 0; i < timercnt; ++i) 3535 for (i = 0; i < timercnt; ++i)
… …
3138 backend_poll (EV_A_ waittime); 3734 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3735 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140 3736
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3737 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142 3738
3739 ECB_MEMORY_FENCE_ACQUIRE;
3143 if (pipe_write_skipped) 3740 if (pipe_write_skipped)
3144 { 3741 {
3145 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3742 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); 3743 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3147 } 3744 }
… …
3185 3782
3186 return activecnt; 3783 return activecnt;
3187} 3784}
3188 3785
3189void 3786void
3190ev_break (EV_P_ int how) EV_THROW 3787ev_break (EV_P_ int how) EV_NOEXCEPT
3191{ 3788{
3192 loop_done = how; 3789 loop_done = how;
3193} 3790}
3194 3791
3195void 3792void
3196ev_ref (EV_P) EV_THROW 3793ev_ref (EV_P) EV_NOEXCEPT
3197{ 3794{
3198 ++activecnt; 3795 ++activecnt;
3199} 3796}
3200 3797
3201void 3798void
3202ev_unref (EV_P) EV_THROW 3799ev_unref (EV_P) EV_NOEXCEPT
3203{ 3800{
3204 --activecnt; 3801 --activecnt;
3205} 3802}
3206 3803
3207void 3804void
3208ev_now_update (EV_P) EV_THROW 3805ev_now_update (EV_P) EV_NOEXCEPT
3209{ 3806{
3210 time_update (EV_A_ 1e100); 3807 time_update (EV_A_ 1e100);
3211} 3808}
3212 3809
3213void 3810void
3214ev_suspend (EV_P) EV_THROW 3811ev_suspend (EV_P) EV_NOEXCEPT
3215{ 3812{
3216 ev_now_update (EV_A); 3813 ev_now_update (EV_A);
3217} 3814}
3218 3815
3219void 3816void
3220ev_resume (EV_P) EV_THROW 3817ev_resume (EV_P) EV_NOEXCEPT
3221{ 3818{
3222 ev_tstamp mn_prev = mn_now; 3819 ev_tstamp mn_prev = mn_now;
3223 3820
3224 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3225 timers_reschedule (EV_A_ mn_now - mn_prev); 3822 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3264 w->pending = 0; 3861 w->pending = 0;
3265 } 3862 }
3266} 3863}
3267 3864
3268int 3865int
3269ev_clear_pending (EV_P_ void *w) EV_THROW 3866ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3270{ 3867{
3271 W w_ = (W)w; 3868 W w_ = (W)w;
3272 int pending = w_->pending; 3869 int pending = w_->pending;
3273 3870
3274 if (expect_true (pending)) 3871 if (expect_true (pending))
… …
3306 w->active = 0; 3903 w->active = 0;
3307} 3904}
3308 3905
3309/*****************************************************************************/ 3906/*****************************************************************************/
3310 3907
3311void noinline 3908noinline
3909void
3312ev_io_start (EV_P_ ev_io *w) EV_THROW 3910ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3313{ 3911{
3314 int fd = w->fd; 3912 int fd = w->fd;
3315 3913
3316 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3317 return; 3915 return;
… …
3320 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3918 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3321 3919
3322 EV_FREQUENT_CHECK; 3920 EV_FREQUENT_CHECK;
3323 3921
3324 ev_start (EV_A_ (W)w, 1); 3922 ev_start (EV_A_ (W)w, 1);
3325 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3923 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3326 wlist_add (&anfds[fd].head, (WL)w); 3924 wlist_add (&anfds[fd].head, (WL)w);
3327 3925
3328 /* common bug, apparently */ 3926 /* common bug, apparently */
3329 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 3927 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3330 3928
… …
3332 w->events &= ~EV__IOFDSET; 3930 w->events &= ~EV__IOFDSET;
3333 3931
3334 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3335} 3933}
3336 3934
3337void noinline 3935noinline
3936void
3338ev_io_stop (EV_P_ ev_io *w) EV_THROW 3937ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3339{ 3938{
3340 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3341 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3342 return; 3941 return;
3343 3942
… …
3351 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3950 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3352 3951
3353 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3354} 3953}
3355 3954
3356void noinline 3955noinline
3956void
3357ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3957ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3358{ 3958{
3359 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3360 return; 3960 return;
3361 3961
3362 ev_at (w) += mn_now; 3962 ev_at (w) += mn_now;
… …
3365 3965
3366 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3367 3967
3368 ++timercnt; 3968 ++timercnt;
3369 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3969 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3370 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3970 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3371 ANHE_w (timers [ev_active (w)]) = (WT)w; 3971 ANHE_w (timers [ev_active (w)]) = (WT)w;
3372 ANHE_at_cache (timers [ev_active (w)]); 3972 ANHE_at_cache (timers [ev_active (w)]);
3373 upheap (timers, ev_active (w)); 3973 upheap (timers, ev_active (w));
3374 3974
3375 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
3376 3976
3377 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3977 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3378} 3978}
3379 3979
3380void noinline 3980noinline
3981void
3381ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3982ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3382{ 3983{
3383 clear_pending (EV_A_ (W)w); 3984 clear_pending (EV_A_ (W)w);
3384 if (expect_false (!ev_is_active (w))) 3985 if (expect_false (!ev_is_active (w)))
3385 return; 3986 return;
3386 3987
… …
3405 ev_stop (EV_A_ (W)w); 4006 ev_stop (EV_A_ (W)w);
3406 4007
3407 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
3408} 4009}
3409 4010
3410void noinline 4011noinline
4012void
3411ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4013ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3412{ 4014{
3413 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
3414 4016
3415 clear_pending (EV_A_ (W)w); 4017 clear_pending (EV_A_ (W)w);
3416 4018
… …
3433 4035
3434 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
3435} 4037}
3436 4038
3437ev_tstamp 4039ev_tstamp
3438ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4040ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3439{ 4041{
3440 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4042 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3441} 4043}
3442 4044
3443#if EV_PERIODIC_ENABLE 4045#if EV_PERIODIC_ENABLE
3444void noinline 4046noinline
4047void
3445ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4048ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3446{ 4049{
3447 if (expect_false (ev_is_active (w))) 4050 if (expect_false (ev_is_active (w)))
3448 return; 4051 return;
3449 4052
3450 if (w->reschedule_cb) 4053 if (w->reschedule_cb)
… …
3459 4062
3460 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3461 4064
3462 ++periodiccnt; 4065 ++periodiccnt;
3463 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4066 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3464 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4067 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3465 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4068 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3466 ANHE_at_cache (periodics [ev_active (w)]); 4069 ANHE_at_cache (periodics [ev_active (w)]);
3467 upheap (periodics, ev_active (w)); 4070 upheap (periodics, ev_active (w));
3468 4071
3469 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
3470 4073
3471 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4074 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3472} 4075}
3473 4076
3474void noinline 4077noinline
4078void
3475ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4079ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3476{ 4080{
3477 clear_pending (EV_A_ (W)w); 4081 clear_pending (EV_A_ (W)w);
3478 if (expect_false (!ev_is_active (w))) 4082 if (expect_false (!ev_is_active (w)))
3479 return; 4083 return;
3480 4084
… …
3497 ev_stop (EV_A_ (W)w); 4101 ev_stop (EV_A_ (W)w);
3498 4102
3499 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3500} 4104}
3501 4105
3502void noinline 4106noinline
4107void
3503ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4108ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3504{ 4109{
3505 /* TODO: use adjustheap and recalculation */ 4110 /* TODO: use adjustheap and recalculation */
3506 ev_periodic_stop (EV_A_ w); 4111 ev_periodic_stop (EV_A_ w);
3507 ev_periodic_start (EV_A_ w); 4112 ev_periodic_start (EV_A_ w);
3508} 4113}
… …
3512# define SA_RESTART 0 4117# define SA_RESTART 0
3513#endif 4118#endif
3514 4119
3515#if EV_SIGNAL_ENABLE 4120#if EV_SIGNAL_ENABLE
3516 4121
3517void noinline 4122noinline
4123void
3518ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4124ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3519{ 4125{
3520 if (expect_false (ev_is_active (w))) 4126 if (expect_false (ev_is_active (w)))
3521 return; 4127 return;
3522 4128
3523 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4129 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3525#if EV_MULTIPLICITY 4131#if EV_MULTIPLICITY
3526 assert (("libev: a signal must not be attached to two different loops", 4132 assert (("libev: a signal must not be attached to two different loops",
3527 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4133 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3528 4134
3529 signals [w->signum - 1].loop = EV_A; 4135 signals [w->signum - 1].loop = EV_A;
4136 ECB_MEMORY_FENCE_RELEASE;
3530#endif 4137#endif
3531 4138
3532 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3533 4140
3534#if EV_USE_SIGNALFD 4141#if EV_USE_SIGNALFD
… …
3593 } 4200 }
3594 4201
3595 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3596} 4203}
3597 4204
3598void noinline 4205noinline
4206void
3599ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4207ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3600{ 4208{
3601 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3602 if (expect_false (!ev_is_active (w))) 4210 if (expect_false (!ev_is_active (w)))
3603 return; 4211 return;
3604 4212
… …
3635#endif 4243#endif
3636 4244
3637#if EV_CHILD_ENABLE 4245#if EV_CHILD_ENABLE
3638 4246
3639void 4247void
3640ev_child_start (EV_P_ ev_child *w) EV_THROW 4248ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3641{ 4249{
3642#if EV_MULTIPLICITY 4250#if EV_MULTIPLICITY
3643 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4251 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3644#endif 4252#endif
3645 if (expect_false (ev_is_active (w))) 4253 if (expect_false (ev_is_active (w)))
… …
3652 4260
3653 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3654} 4262}
3655 4263
3656void 4264void
3657ev_child_stop (EV_P_ ev_child *w) EV_THROW 4265ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3658{ 4266{
3659 clear_pending (EV_A_ (W)w); 4267 clear_pending (EV_A_ (W)w);
3660 if (expect_false (!ev_is_active (w))) 4268 if (expect_false (!ev_is_active (w)))
3661 return; 4269 return;
3662 4270
… …
3679 4287
3680#define DEF_STAT_INTERVAL 5.0074891 4288#define DEF_STAT_INTERVAL 5.0074891
3681#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4289#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3682#define MIN_STAT_INTERVAL 0.1074891 4290#define MIN_STAT_INTERVAL 0.1074891
3683 4291
3684static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4292noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3685 4293
3686#if EV_USE_INOTIFY 4294#if EV_USE_INOTIFY
3687 4295
3688/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4296/* 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) 4297# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3690 4298
3691static void noinline 4299noinline
4300static void
3692infy_add (EV_P_ ev_stat *w) 4301infy_add (EV_P_ ev_stat *w)
3693{ 4302{
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); 4303 w->wd = inotify_add_watch (fs_fd, w->path,
4304 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4305 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4306 | IN_DONT_FOLLOW | IN_MASK_ADD);
3695 4307
3696 if (w->wd >= 0) 4308 if (w->wd >= 0)
3697 { 4309 {
3698 struct statfs sfs; 4310 struct statfs sfs;
3699 4311
… …
3703 4315
3704 if (!fs_2625) 4316 if (!fs_2625)
3705 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4317 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3706 else if (!statfs (w->path, &sfs) 4318 else if (!statfs (w->path, &sfs)
3707 && (sfs.f_type == 0x1373 /* devfs */ 4319 && (sfs.f_type == 0x1373 /* devfs */
4320 || sfs.f_type == 0x4006 /* fat */
4321 || sfs.f_type == 0x4d44 /* msdos */
3708 || sfs.f_type == 0xEF53 /* ext2/3 */ 4322 || sfs.f_type == 0xEF53 /* ext2/3 */
4323 || sfs.f_type == 0x72b6 /* jffs2 */
4324 || sfs.f_type == 0x858458f6 /* ramfs */
4325 || sfs.f_type == 0x5346544e /* ntfs */
3709 || sfs.f_type == 0x3153464a /* jfs */ 4326 || sfs.f_type == 0x3153464a /* jfs */
4327 || sfs.f_type == 0x9123683e /* btrfs */
3710 || sfs.f_type == 0x52654973 /* reiser3 */ 4328 || sfs.f_type == 0x52654973 /* reiser3 */
3711 || sfs.f_type == 0x01021994 /* tempfs */ 4329 || sfs.f_type == 0x01021994 /* tmpfs */
3712 || sfs.f_type == 0x58465342 /* xfs */)) 4330 || sfs.f_type == 0x58465342 /* xfs */))
3713 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4331 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3714 else 4332 else
3715 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4333 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3716 } 4334 }
… …
3751 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4369 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3752 ev_timer_again (EV_A_ &w->timer); 4370 ev_timer_again (EV_A_ &w->timer);
3753 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4371 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3754} 4372}
3755 4373
3756static void noinline 4374noinline
4375static void
3757infy_del (EV_P_ ev_stat *w) 4376infy_del (EV_P_ ev_stat *w)
3758{ 4377{
3759 int slot; 4378 int slot;
3760 int wd = w->wd; 4379 int wd = w->wd;
3761 4380
… …
3768 4387
3769 /* remove this watcher, if others are watching it, they will rearm */ 4388 /* remove this watcher, if others are watching it, they will rearm */
3770 inotify_rm_watch (fs_fd, wd); 4389 inotify_rm_watch (fs_fd, wd);
3771} 4390}
3772 4391
3773static void noinline 4392noinline
4393static void
3774infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4394infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3775{ 4395{
3776 if (slot < 0) 4396 if (slot < 0)
3777 /* overflow, need to check for all hash slots */ 4397 /* overflow, need to check for all hash slots */
3778 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4398 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3814 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4434 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3815 ofs += sizeof (struct inotify_event) + ev->len; 4435 ofs += sizeof (struct inotify_event) + ev->len;
3816 } 4436 }
3817} 4437}
3818 4438
3819inline_size void ecb_cold 4439inline_size ecb_cold
4440void
3820ev_check_2625 (EV_P) 4441ev_check_2625 (EV_P)
3821{ 4442{
3822 /* kernels < 2.6.25 are borked 4443 /* kernels < 2.6.25 are borked
3823 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4444 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3824 */ 4445 */
… …
3914#else 4535#else
3915# define EV_LSTAT(p,b) lstat (p, b) 4536# define EV_LSTAT(p,b) lstat (p, b)
3916#endif 4537#endif
3917 4538
3918void 4539void
3919ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4540ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3920{ 4541{
3921 if (lstat (w->path, &w->attr) < 0) 4542 if (lstat (w->path, &w->attr) < 0)
3922 w->attr.st_nlink = 0; 4543 w->attr.st_nlink = 0;
3923 else if (!w->attr.st_nlink) 4544 else if (!w->attr.st_nlink)
3924 w->attr.st_nlink = 1; 4545 w->attr.st_nlink = 1;
3925} 4546}
3926 4547
3927static void noinline 4548noinline
4549static void
3928stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4550stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3929{ 4551{
3930 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4552 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3931 4553
3932 ev_statdata prev = w->attr; 4554 ev_statdata prev = w->attr;
… …
3963 ev_feed_event (EV_A_ w, EV_STAT); 4585 ev_feed_event (EV_A_ w, EV_STAT);
3964 } 4586 }
3965} 4587}
3966 4588
3967void 4589void
3968ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4590ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3969{ 4591{
3970 if (expect_false (ev_is_active (w))) 4592 if (expect_false (ev_is_active (w)))
3971 return; 4593 return;
3972 4594
3973 ev_stat_stat (EV_A_ w); 4595 ev_stat_stat (EV_A_ w);
… …
3994 4616
3995 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3996} 4618}
3997 4619
3998void 4620void
3999ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4621ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4000{ 4622{
4001 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
4003 return; 4625 return;
4004 4626
… …
4020} 4642}
4021#endif 4643#endif
4022 4644
4023#if EV_IDLE_ENABLE 4645#if EV_IDLE_ENABLE
4024void 4646void
4025ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4647ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4026{ 4648{
4027 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
4028 return; 4650 return;
4029 4651
4030 pri_adjust (EV_A_ (W)w); 4652 pri_adjust (EV_A_ (W)w);
… …
4035 int active = ++idlecnt [ABSPRI (w)]; 4657 int active = ++idlecnt [ABSPRI (w)];
4036 4658
4037 ++idleall; 4659 ++idleall;
4038 ev_start (EV_A_ (W)w, active); 4660 ev_start (EV_A_ (W)w, active);
4039 4661
4040 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4662 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4041 idles [ABSPRI (w)][active - 1] = w; 4663 idles [ABSPRI (w)][active - 1] = w;
4042 } 4664 }
4043 4665
4044 EV_FREQUENT_CHECK; 4666 EV_FREQUENT_CHECK;
4045} 4667}
4046 4668
4047void 4669void
4048ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4670ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4049{ 4671{
4050 clear_pending (EV_A_ (W)w); 4672 clear_pending (EV_A_ (W)w);
4051 if (expect_false (!ev_is_active (w))) 4673 if (expect_false (!ev_is_active (w)))
4052 return; 4674 return;
4053 4675
… …
4067} 4689}
4068#endif 4690#endif
4069 4691
4070#if EV_PREPARE_ENABLE 4692#if EV_PREPARE_ENABLE
4071void 4693void
4072ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4694ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4073{ 4695{
4074 if (expect_false (ev_is_active (w))) 4696 if (expect_false (ev_is_active (w)))
4075 return; 4697 return;
4076 4698
4077 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
4078 4700
4079 ev_start (EV_A_ (W)w, ++preparecnt); 4701 ev_start (EV_A_ (W)w, ++preparecnt);
4080 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4702 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4081 prepares [preparecnt - 1] = w; 4703 prepares [preparecnt - 1] = w;
4082 4704
4083 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
4084} 4706}
4085 4707
4086void 4708void
4087ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4709ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4088{ 4710{
4089 clear_pending (EV_A_ (W)w); 4711 clear_pending (EV_A_ (W)w);
4090 if (expect_false (!ev_is_active (w))) 4712 if (expect_false (!ev_is_active (w)))
4091 return; 4713 return;
4092 4714
… …
4105} 4727}
4106#endif 4728#endif
4107 4729
4108#if EV_CHECK_ENABLE 4730#if EV_CHECK_ENABLE
4109void 4731void
4110ev_check_start (EV_P_ ev_check *w) EV_THROW 4732ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4111{ 4733{
4112 if (expect_false (ev_is_active (w))) 4734 if (expect_false (ev_is_active (w)))
4113 return; 4735 return;
4114 4736
4115 EV_FREQUENT_CHECK; 4737 EV_FREQUENT_CHECK;
4116 4738
4117 ev_start (EV_A_ (W)w, ++checkcnt); 4739 ev_start (EV_A_ (W)w, ++checkcnt);
4118 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4740 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4119 checks [checkcnt - 1] = w; 4741 checks [checkcnt - 1] = w;
4120 4742
4121 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
4122} 4744}
4123 4745
4124void 4746void
4125ev_check_stop (EV_P_ ev_check *w) EV_THROW 4747ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4126{ 4748{
4127 clear_pending (EV_A_ (W)w); 4749 clear_pending (EV_A_ (W)w);
4128 if (expect_false (!ev_is_active (w))) 4750 if (expect_false (!ev_is_active (w)))
4129 return; 4751 return;
4130 4752
… …
4142 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
4143} 4765}
4144#endif 4766#endif
4145 4767
4146#if EV_EMBED_ENABLE 4768#if EV_EMBED_ENABLE
4147void noinline 4769noinline
4770void
4148ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4771ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4149{ 4772{
4150 ev_run (w->other, EVRUN_NOWAIT); 4773 ev_run (w->other, EVRUN_NOWAIT);
4151} 4774}
4152 4775
4153static void 4776static void
… …
4201 ev_idle_stop (EV_A_ idle); 4824 ev_idle_stop (EV_A_ idle);
4202} 4825}
4203#endif 4826#endif
4204 4827
4205void 4828void
4206ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4829ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4207{ 4830{
4208 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4209 return; 4832 return;
4210 4833
4211 { 4834 {
… …
4232 4855
4233 EV_FREQUENT_CHECK; 4856 EV_FREQUENT_CHECK;
4234} 4857}
4235 4858
4236void 4859void
4237ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4860ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4238{ 4861{
4239 clear_pending (EV_A_ (W)w); 4862 clear_pending (EV_A_ (W)w);
4240 if (expect_false (!ev_is_active (w))) 4863 if (expect_false (!ev_is_active (w)))
4241 return; 4864 return;
4242 4865
… …
4252} 4875}
4253#endif 4876#endif
4254 4877
4255#if EV_FORK_ENABLE 4878#if EV_FORK_ENABLE
4256void 4879void
4257ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4880ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4258{ 4881{
4259 if (expect_false (ev_is_active (w))) 4882 if (expect_false (ev_is_active (w)))
4260 return; 4883 return;
4261 4884
4262 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
4263 4886
4264 ev_start (EV_A_ (W)w, ++forkcnt); 4887 ev_start (EV_A_ (W)w, ++forkcnt);
4265 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4888 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4266 forks [forkcnt - 1] = w; 4889 forks [forkcnt - 1] = w;
4267 4890
4268 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4269} 4892}
4270 4893
4271void 4894void
4272ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4895ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4273{ 4896{
4274 clear_pending (EV_A_ (W)w); 4897 clear_pending (EV_A_ (W)w);
4275 if (expect_false (!ev_is_active (w))) 4898 if (expect_false (!ev_is_active (w)))
4276 return; 4899 return;
4277 4900
… …
4290} 4913}
4291#endif 4914#endif
4292 4915
4293#if EV_CLEANUP_ENABLE 4916#if EV_CLEANUP_ENABLE
4294void 4917void
4295ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4918ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4296{ 4919{
4297 if (expect_false (ev_is_active (w))) 4920 if (expect_false (ev_is_active (w)))
4298 return; 4921 return;
4299 4922
4300 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4301 4924
4302 ev_start (EV_A_ (W)w, ++cleanupcnt); 4925 ev_start (EV_A_ (W)w, ++cleanupcnt);
4303 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4926 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4304 cleanups [cleanupcnt - 1] = w; 4927 cleanups [cleanupcnt - 1] = w;
4305 4928
4306 /* cleanup watchers should never keep a refcount on the loop */ 4929 /* cleanup watchers should never keep a refcount on the loop */
4307 ev_unref (EV_A); 4930 ev_unref (EV_A);
4308 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
4309} 4932}
4310 4933
4311void 4934void
4312ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4935ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4313{ 4936{
4314 clear_pending (EV_A_ (W)w); 4937 clear_pending (EV_A_ (W)w);
4315 if (expect_false (!ev_is_active (w))) 4938 if (expect_false (!ev_is_active (w)))
4316 return; 4939 return;
4317 4940
… …
4331} 4954}
4332#endif 4955#endif
4333 4956
4334#if EV_ASYNC_ENABLE 4957#if EV_ASYNC_ENABLE
4335void 4958void
4336ev_async_start (EV_P_ ev_async *w) EV_THROW 4959ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4337{ 4960{
4338 if (expect_false (ev_is_active (w))) 4961 if (expect_false (ev_is_active (w)))
4339 return; 4962 return;
4340 4963
4341 w->sent = 0; 4964 w->sent = 0;
… …
4343 evpipe_init (EV_A); 4966 evpipe_init (EV_A);
4344 4967
4345 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4346 4969
4347 ev_start (EV_A_ (W)w, ++asynccnt); 4970 ev_start (EV_A_ (W)w, ++asynccnt);
4348 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4971 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4349 asyncs [asynccnt - 1] = w; 4972 asyncs [asynccnt - 1] = w;
4350 4973
4351 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4352} 4975}
4353 4976
4354void 4977void
4355ev_async_stop (EV_P_ ev_async *w) EV_THROW 4978ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4356{ 4979{
4357 clear_pending (EV_A_ (W)w); 4980 clear_pending (EV_A_ (W)w);
4358 if (expect_false (!ev_is_active (w))) 4981 if (expect_false (!ev_is_active (w)))
4359 return; 4982 return;
4360 4983
… …
4371 4994
4372 EV_FREQUENT_CHECK; 4995 EV_FREQUENT_CHECK;
4373} 4996}
4374 4997
4375void 4998void
4376ev_async_send (EV_P_ ev_async *w) EV_THROW 4999ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4377{ 5000{
4378 w->sent = 1; 5001 w->sent = 1;
4379 evpipe_write (EV_A_ &async_pending); 5002 evpipe_write (EV_A_ &async_pending);
4380} 5003}
4381#endif 5004#endif
… …
4418 5041
4419 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5042 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4420} 5043}
4421 5044
4422void 5045void
4423ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5046ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4424{ 5047{
4425 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5048 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 5049
4433 once->cb = cb; 5050 once->cb = cb;
4434 once->arg = arg; 5051 once->arg = arg;
4435 5052
4436 ev_init (&once->io, once_cb_io); 5053 ev_init (&once->io, once_cb_io);
… …
4449} 5066}
4450 5067
4451/*****************************************************************************/ 5068/*****************************************************************************/
4452 5069
4453#if EV_WALK_ENABLE 5070#if EV_WALK_ENABLE
4454void ecb_cold 5071ecb_cold
5072void
4455ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5073ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4456{ 5074{
4457 int i, j; 5075 int i, j;
4458 ev_watcher_list *wl, *wn; 5076 ev_watcher_list *wl, *wn;
4459 5077
4460 if (types & (EV_IO | EV_EMBED)) 5078 if (types & (EV_IO | EV_EMBED))

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