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Comparing libev/ev.c (file contents):
Revision 1.449 by root, Sun Sep 23 21:21:58 2012 UTC vs.
Revision 1.498 by root, Wed Jun 26 00:01:46 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
208# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
210# endif 229# endif
211# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
212#endif 231#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 232
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
223 234
224/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 236#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 252#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 254#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 256#else
246# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 258#endif
251 259
252#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
254#endif 262#endif
255 263
256#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 267# else
260# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
269# endif
270#endif
271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
261# endif 278# endif
262#endif 279#endif
263 280
264#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 324
308#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 326# define EV_USE_PORT 0
310#endif 327#endif
311 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
312#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 340# else
316# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 380# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 381#endif
357 382
358#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
385#endif
386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
360#endif 401#endif
361 402
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
… …
373# endif 414# endif
374#endif 415#endif
375 416
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 418
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
387#endif 422#endif
388 423
… …
398 433
399#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 436# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
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 0x00010006
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_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
565 663
566/*****************************************************************************/ 664/*****************************************************************************/
567 665
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* 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 */
… …
574 672
575#if ECB_NO_SMP 673#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
577#endif 675#endif
578 676
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 */
684#endif
685
579#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
580 #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
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
581 #if __i386 || __i386__ 689 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 693 #elif ECB_GCC_AMD64
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__ 713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__ 719 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__ 721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
605 #elif defined __alpha__ 725 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__ 727 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__ 730 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
612 #endif 738 #endif
613 #endif 739 #endif
614#endif 740#endif
615 741
616#ifndef ECB_MEMORY_FENCE 742#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7) 743 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */ 744 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic) 746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */ 751 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32 770 #elif defined _WIN32
631 #include <WinNT.h> 771 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h> 774 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier () 775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
638 #elif __xlC__ 779 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync () 780 #define ECB_MEMORY_FENCE __sync ()
640 #endif 781 #endif
641#endif 782#endif
642 783
643#ifndef ECB_MEMORY_FENCE 784#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */ 786 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */ 787 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h> 788 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
655 #endif 792 #endif
656#endif 793#endif
657 794
658#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
679 816
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif 819#endif
683 820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
684/*****************************************************************************/ 825/*****************************************************************************/
685 826
686#if __cplusplus 827#if ECB_CPP
687 #define ecb_inline static inline 828 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
690#elif ECB_C99 831#elif ECB_C99
691 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
705 846
706#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
710 852
711#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
712 854
713#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
714 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else 879#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) 880 #define ecb_prefetch(addr,rw,locality)
723#endif 881#endif
724 882
725/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5) 884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
727 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
729 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
730#endif 890#endif
731 891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
732#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
910#endif
911
733#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
736 915
737#if ECB_C11 916#if ECB_C11 || __IBMC_NORETURN
917 /* 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 918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
739#else 924#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__)) 925 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif 926#endif
742 927
743#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
… …
758/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
761 946
762/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */ 958 /* no popcountll */
771#else 959#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773 ecb_function_ int 961 ecb_function_ ecb_const int
774 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
775 { 963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
776 int r = 0; 969 int r = 0;
777 970
778 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
779 972
780#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
790 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
792#endif 985#endif
793 986
794 return r; 987 return r;
988#endif
795 } 989 }
796 990
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798 ecb_function_ int 992 ecb_function_ ecb_const int
799 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
800 { 994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
801 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
803 } 1003 }
804 1004
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806 ecb_function_ int 1006 ecb_function_ ecb_const int
807 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
808 { 1008 {
809 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101; 1012 x *= 0x01010101;
813 1013
814 return x >> 24; 1014 return x >> 24;
815 } 1015 }
816 1016
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819 { 1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
820 int r = 0; 1025 int r = 0;
821 1026
822 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
827 1032
828 return r; 1033 return r;
1034#endif
829 } 1035 }
830 1036
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833 { 1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
834 int r = 0; 1045 int r = 0;
835 1046
836 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
837 1048
838 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
839 } 1051 }
840#endif 1052#endif
841 1053
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1054ecb_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)); } 1055ecb_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; 1056ecb_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)); } 1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846 1058
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849{ 1061{
850 return ( (x * 0x0802U & 0x22110U) 1062 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852} 1064}
853 1065
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856{ 1068{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8); 1072 x = ( x >> 8 ) | ( x << 8);
861 1073
862 return x; 1074 return x;
863} 1075}
864 1076
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867{ 1079{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
874 return x; 1086 return x;
875} 1087}
876 1088
877/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */ 1090/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880ecb_function_ int 1092ecb_function_ ecb_const int
881ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
882{ 1094{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884} 1096}
885 1097
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_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; 1099ecb_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; 1100ecb_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; 1101ecb_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; 1102ecb_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; 1103ecb_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; 1104ecb_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; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
894 1106
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_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); } 1108ecb_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); } 1109ecb_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); } 1110ecb_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); } 1111ecb_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); } 1112ecb_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); } 1113ecb_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); } 1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903 1115
904#if ECB_GCC_VERSION(4,3) 1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
906 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x) 1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
908#else 1129#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
911 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
912 { 1133 {
913 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
914 } 1135 }
915 1136
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
918 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
919 { 1140 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 } 1142 }
922 1143
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
925 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
926 { 1147 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 } 1149 }
929#endif 1150#endif
930 1151
931#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
932 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
933#else 1154#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
936 ecb_inline void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937#endif 1158#endif
938 1159
939/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941 1162
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
943ecb_inline unsigned char 1164ecb_inline ecb_const uint32_t
944ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
945{ 1166{
946 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
947 return *(unsigned char *)&u; 1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
948} 1189}
949 1190
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
954 1195
955#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else 1198#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif 1200#endif
960 1201
961#if __cplusplus 1202#if ECB_CPP
962 template<typename T> 1203 template<typename T>
963 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
964 { 1205 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 } 1207 }
… …
983 } 1224 }
984#else 1225#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif 1227#endif
987 1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
988#endif 1534#endif
989 1535
990/* ECB.H END */ 1536/* ECB.H END */
991 1537
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
1013#define inline_size ecb_inline 1559#define inline_size ecb_inline
1014 1560
1015#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
1017#else 1563#else
1018# define inline_speed static noinline 1564# define inline_speed noinline static
1019#endif 1565#endif
1020 1566
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022 1568
1023#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
1025#else 1571#else
1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif 1573#endif
1028 1574
1029#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
1030#define EMPTY2(a,b) /* used to suppress some warnings */
1031 1576
1032typedef ev_watcher *W; 1577typedef ev_watcher *W;
1033typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
1034typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
1035 1580
… …
1060# include "ev_win32.c" 1605# include "ev_win32.c"
1061#endif 1606#endif
1062 1607
1063/*****************************************************************************/ 1608/*****************************************************************************/
1064 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
1065/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
1066 1615
1067#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
1068# include <math.h> 1617# include <math.h>
1069# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
1070#else 1619#else
1071 1620
1072#include <float.h> 1621#include <float.h>
1073 1622
1074/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
1075static ev_tstamp noinline 1625static ev_tstamp
1076ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
1077{ 1627{
1078 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1112 1662
1113#ifdef __linux 1663#ifdef __linux
1114# include <sys/utsname.h> 1664# include <sys/utsname.h>
1115#endif 1665#endif
1116 1666
1117static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
1118ev_linux_version (void) 1669ev_linux_version (void)
1119{ 1670{
1120#ifdef __linux 1671#ifdef __linux
1121 unsigned int v = 0; 1672 unsigned int v = 0;
1122 struct utsname buf; 1673 struct utsname buf;
… …
1151} 1702}
1152 1703
1153/*****************************************************************************/ 1704/*****************************************************************************/
1154 1705
1155#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1156static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1157ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1158{ 1710{
1159 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1160} 1712}
1161#endif 1713#endif
1162 1714
1163static void (*syserr_cb)(const char *msg) EV_THROW; 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1164 1716
1165void ecb_cold 1717ecb_cold
1718void
1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1167{ 1720{
1168 syserr_cb = cb; 1721 syserr_cb = cb;
1169} 1722}
1170 1723
1171static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1172ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1173{ 1727{
1174 if (!msg) 1728 if (!msg)
1175 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1176 1730
… …
1189 abort (); 1743 abort ();
1190 } 1744 }
1191} 1745}
1192 1746
1193static void * 1747static void *
1194ev_realloc_emul (void *ptr, long size) EV_THROW 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1195{ 1749{
1196 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1197 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
1198 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it, 1753 * recently, also (at least) fedora and debian started breaking it,
… …
1205 1759
1206 free (ptr); 1760 free (ptr);
1207 return 0; 1761 return 0;
1208} 1762}
1209 1763
1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1211 1765
1212void ecb_cold 1766ecb_cold
1767void
1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1214{ 1769{
1215 alloc = cb; 1770 alloc = cb;
1216} 1771}
1217 1772
1218inline_speed void * 1773inline_speed void *
… …
1245typedef struct 1800typedef struct
1246{ 1801{
1247 WL head; 1802 WL head;
1248 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1249 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
1251 unsigned char unused; 1806 unsigned char unused;
1252#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1253 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1254#endif 1809#endif
1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1335 1890
1336/*****************************************************************************/ 1891/*****************************************************************************/
1337 1892
1338#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1339ev_tstamp 1894ev_tstamp
1340ev_time (void) EV_THROW 1895ev_time (void) EV_NOEXCEPT
1341{ 1896{
1342#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1343 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1344 { 1899 {
1345 struct timespec ts; 1900 struct timespec ts;
… …
1369 return ev_time (); 1924 return ev_time ();
1370} 1925}
1371 1926
1372#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1373ev_tstamp 1928ev_tstamp
1374ev_now (EV_P) EV_THROW 1929ev_now (EV_P) EV_NOEXCEPT
1375{ 1930{
1376 return ev_rt_now; 1931 return ev_rt_now;
1377} 1932}
1378#endif 1933#endif
1379 1934
1380void 1935void
1381ev_sleep (ev_tstamp delay) EV_THROW 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1382{ 1937{
1383 if (delay > 0.) 1938 if (delay > 0.)
1384 { 1939 {
1385#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1386 struct timespec ts; 1941 struct timespec ts;
1387 1942
1388 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1389 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1390#elif defined _WIN32 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
1391 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1392#else 1949#else
1393 struct timeval tv; 1950 struct timeval tv;
1394 1951
1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1426 } 1983 }
1427 1984
1428 return ncur; 1985 return ncur;
1429} 1986}
1430 1987
1431static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1432array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1433{ 1991{
1434 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1435 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1436} 1994}
1437 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1438#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1439 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1440 2000
1441#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1442 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1443 { \ 2003 { \
1444 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1445 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1446 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1447 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1448 } 2008 }
1449 2009
1450#if 0 2010#if 0
1451#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1462 2022
1463/*****************************************************************************/ 2023/*****************************************************************************/
1464 2024
1465/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1466static void noinline 2026noinline
2027static void
1467pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1468{ 2029{
1469} 2030}
1470 2031
1471void noinline 2032noinline
2033void
1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1473{ 2035{
1474 W w_ = (W)w; 2036 W w_ = (W)w;
1475 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1476 2038
1477 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1478 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1479 else 2041 else
1480 { 2042 {
1481 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1483 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1484 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1485 } 2047 }
1486 2048
1487 pendingpri = NUMPRI - 1; 2049 pendingpri = NUMPRI - 1;
1488} 2050}
1489 2051
1490inline_speed void 2052inline_speed void
1491feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1492{ 2054{
1493 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1494 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1495} 2057}
1496 2058
1497inline_size void 2059inline_size void
1498feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1538 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1539 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1540} 2102}
1541 2103
1542void 2104void
1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1544{ 2106{
1545 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1546 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1547} 2109}
1548 2110
… …
1585 ev_io *w; 2147 ev_io *w;
1586 2148
1587 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1589 2151
1590 anfd->reify = 0; 2152 anfd->reify = 0;
1591 2153
1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1593 { 2155 {
1594 anfd->events = 0; 2156 anfd->events = 0;
1595 2157
… …
1606 2168
1607 fdchangecnt = 0; 2169 fdchangecnt = 0;
1608} 2170}
1609 2171
1610/* something about the given fd changed */ 2172/* something about the given fd changed */
1611inline_size void 2173inline_size
2174void
1612fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1613{ 2176{
1614 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1615 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1616 2179
1617 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1618 { 2181 {
1619 ++fdchangecnt; 2182 ++fdchangecnt;
1620 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1621 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1622 } 2185 }
1623} 2186}
1624 2187
1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1626inline_speed void ecb_cold 2189inline_speed ecb_cold void
1627fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1628{ 2191{
1629 ev_io *w; 2192 ev_io *w;
1630 2193
1631 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1635 } 2198 }
1636} 2199}
1637 2200
1638/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1639inline_size int ecb_cold 2202inline_size ecb_cold int
1640fd_valid (int fd) 2203fd_valid (int fd)
1641{ 2204{
1642#ifdef _WIN32 2205#ifdef _WIN32
1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1644#else 2207#else
1645 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1646#endif 2209#endif
1647} 2210}
1648 2211
1649/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1650static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1651fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1652{ 2216{
1653 int fd; 2217 int fd;
1654 2218
1655 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1657 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1658 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1659} 2223}
1660 2224
1661/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1662static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1663fd_enomem (EV_P) 2228fd_enomem (EV_P)
1664{ 2229{
1665 int fd; 2230 int fd;
1666 2231
1667 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1671 break; 2236 break;
1672 } 2237 }
1673} 2238}
1674 2239
1675/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1676static void noinline 2241noinline
2242static void
1677fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1678{ 2244{
1679 int fd; 2245 int fd;
1680 2246
1681 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1862 2428
1863/*****************************************************************************/ 2429/*****************************************************************************/
1864 2430
1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1866 2432
1867static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1868evpipe_init (EV_P) 2435evpipe_init (EV_P)
1869{ 2436{
1870 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1871 { 2438 {
1872 int fds [2]; 2439 int fds [2];
… …
1883 while (pipe (fds)) 2450 while (pipe (fds))
1884 ev_syserr ("(libev) error creating signal/async pipe"); 2451 ev_syserr ("(libev) error creating signal/async pipe");
1885 2452
1886 fd_intern (fds [0]); 2453 fd_intern (fds [0]);
1887 } 2454 }
1888
1889 fd_intern (fds [1]);
1890 2455
1891 evpipe [0] = fds [0]; 2456 evpipe [0] = fds [0];
1892 2457
1893 if (evpipe [1] < 0) 2458 if (evpipe [1] < 0)
1894 evpipe [1] = fds [1]; /* first call, set write fd */ 2459 evpipe [1] = fds [1]; /* first call, set write fd */
… …
1901 2466
1902 dup2 (fds [1], evpipe [1]); 2467 dup2 (fds [1], evpipe [1]);
1903 close (fds [1]); 2468 close (fds [1]);
1904 } 2469 }
1905 2470
2471 fd_intern (evpipe [1]);
2472
1906 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); 2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1907 ev_io_start (EV_A_ &pipe_w); 2474 ev_io_start (EV_A_ &pipe_w);
1908 ev_unref (EV_A); /* watcher should not keep loop alive */ 2475 ev_unref (EV_A); /* watcher should not keep loop alive */
1909 } 2476 }
1910} 2477}
… …
1943#endif 2510#endif
1944 { 2511 {
1945#ifdef _WIN32 2512#ifdef _WIN32
1946 WSABUF buf; 2513 WSABUF buf;
1947 DWORD sent; 2514 DWORD sent;
1948 buf.buf = &buf; 2515 buf.buf = (char *)&buf;
1949 buf.len = 1; 2516 buf.len = 1;
1950 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1951#else 2518#else
1952 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
1953#endif 2520#endif
… …
2025} 2592}
2026 2593
2027/*****************************************************************************/ 2594/*****************************************************************************/
2028 2595
2029void 2596void
2030ev_feed_signal (int signum) EV_THROW 2597ev_feed_signal (int signum) EV_NOEXCEPT
2031{ 2598{
2032#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2033 ECB_MEMORY_FENCE_ACQUIRE; 2601 ECB_MEMORY_FENCE_ACQUIRE;
2034 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
2035 2603
2036 if (!EV_A) 2604 if (!EV_A)
2037 return; 2605 return;
2038#endif 2606#endif
2039 2607
… …
2049#endif 2617#endif
2050 2618
2051 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
2052} 2620}
2053 2621
2054void noinline 2622noinline
2623void
2055ev_feed_signal_event (EV_P_ int signum) EV_THROW 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2056{ 2625{
2057 WL w; 2626 WL w;
2058 2627
2059 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2060 return; 2629 return;
… …
2169# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
2170#endif 2739#endif
2171#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2172# include "ev_epoll.c" 2741# include "ev_epoll.c"
2173#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2174#if EV_USE_POLL 2746#if EV_USE_POLL
2175# include "ev_poll.c" 2747# include "ev_poll.c"
2176#endif 2748#endif
2177#if EV_USE_SELECT 2749#if EV_USE_SELECT
2178# include "ev_select.c" 2750# include "ev_select.c"
2179#endif 2751#endif
2180 2752
2181int ecb_cold 2753ecb_cold int
2182ev_version_major (void) EV_THROW 2754ev_version_major (void) EV_NOEXCEPT
2183{ 2755{
2184 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2185} 2757}
2186 2758
2187int ecb_cold 2759ecb_cold int
2188ev_version_minor (void) EV_THROW 2760ev_version_minor (void) EV_NOEXCEPT
2189{ 2761{
2190 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2191} 2763}
2192 2764
2193/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
2194int inline_size ecb_cold 2766inline_size ecb_cold int
2195enable_secure (void) 2767enable_secure (void)
2196{ 2768{
2197#ifdef _WIN32 2769#ifdef _WIN32
2198 return 0; 2770 return 0;
2199#else 2771#else
2200 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2201 || getgid () != getegid (); 2773 || getgid () != getegid ();
2202#endif 2774#endif
2203} 2775}
2204 2776
2205unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2206ev_supported_backends (void) EV_THROW 2779ev_supported_backends (void) EV_NOEXCEPT
2207{ 2780{
2208 unsigned int flags = 0; 2781 unsigned int flags = 0;
2209 2782
2210 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2211 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2212 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2213 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2214 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2215 2789
2216 return flags; 2790 return flags;
2217} 2791}
2218 2792
2219unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2220ev_recommended_backends (void) EV_THROW 2795ev_recommended_backends (void) EV_NOEXCEPT
2221{ 2796{
2222 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2223 2798
2224#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2225 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2233#endif 2808#endif
2234#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2235 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2236#endif 2811#endif
2237 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2238 return flags; 2818 return flags;
2239} 2819}
2240 2820
2241unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2242ev_embeddable_backends (void) EV_THROW 2823ev_embeddable_backends (void) EV_NOEXCEPT
2243{ 2824{
2244 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2245 2826
2246 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2247 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2249 2830
2250 return flags; 2831 return flags;
2251} 2832}
2252 2833
2253unsigned int 2834unsigned int
2254ev_backend (EV_P) EV_THROW 2835ev_backend (EV_P) EV_NOEXCEPT
2255{ 2836{
2256 return backend; 2837 return backend;
2257} 2838}
2258 2839
2259#if EV_FEATURE_API 2840#if EV_FEATURE_API
2260unsigned int 2841unsigned int
2261ev_iteration (EV_P) EV_THROW 2842ev_iteration (EV_P) EV_NOEXCEPT
2262{ 2843{
2263 return loop_count; 2844 return loop_count;
2264} 2845}
2265 2846
2266unsigned int 2847unsigned int
2267ev_depth (EV_P) EV_THROW 2848ev_depth (EV_P) EV_NOEXCEPT
2268{ 2849{
2269 return loop_depth; 2850 return loop_depth;
2270} 2851}
2271 2852
2272void 2853void
2273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2274{ 2855{
2275 io_blocktime = interval; 2856 io_blocktime = interval;
2276} 2857}
2277 2858
2278void 2859void
2279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2280{ 2861{
2281 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2282} 2863}
2283 2864
2284void 2865void
2285ev_set_userdata (EV_P_ void *data) EV_THROW 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2286{ 2867{
2287 userdata = data; 2868 userdata = data;
2288} 2869}
2289 2870
2290void * 2871void *
2291ev_userdata (EV_P) EV_THROW 2872ev_userdata (EV_P) EV_NOEXCEPT
2292{ 2873{
2293 return userdata; 2874 return userdata;
2294} 2875}
2295 2876
2296void 2877void
2297ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2298{ 2879{
2299 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2300} 2881}
2301 2882
2302void 2883void
2303ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2304{ 2885{
2305 release_cb = release; 2886 release_cb = release;
2306 acquire_cb = acquire; 2887 acquire_cb = acquire;
2307} 2888}
2308#endif 2889#endif
2309 2890
2310/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2311static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2312loop_init (EV_P_ unsigned int flags) EV_THROW 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2313{ 2895{
2314 if (!backend) 2896 if (!backend)
2315 { 2897 {
2316 origflags = flags; 2898 origflags = flags;
2317 2899
… …
2375 2957
2376 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2377 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2378 2960
2379#if EV_USE_IOCP 2961#if EV_USE_IOCP
2380 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2381#endif 2963#endif
2382#if EV_USE_PORT 2964#if EV_USE_PORT
2383 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2384#endif 2966#endif
2385#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2386 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2387#endif 2972#endif
2388#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2389 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2390#endif 2975#endif
2391#if EV_USE_POLL 2976#if EV_USE_POLL
2392 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2393#endif 2978#endif
2394#if EV_USE_SELECT 2979#if EV_USE_SELECT
2395 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2396#endif 2981#endif
2397 2982
2398 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2399 2984
2400#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2403#endif 2988#endif
2404 } 2989 }
2405} 2990}
2406 2991
2407/* free up a loop structure */ 2992/* free up a loop structure */
2408void ecb_cold 2993ecb_cold
2994void
2409ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2410{ 2996{
2411 int i; 2997 int i;
2412 2998
2413#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2454 3040
2455 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2456 close (backend_fd); 3042 close (backend_fd);
2457 3043
2458#if EV_USE_IOCP 3044#if EV_USE_IOCP
2459 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2460#endif 3046#endif
2461#if EV_USE_PORT 3047#if EV_USE_PORT
2462 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2463#endif 3049#endif
2464#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2465 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2466#endif 3055#endif
2467#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2468 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2469#endif 3058#endif
2470#if EV_USE_POLL 3059#if EV_USE_POLL
2471 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2472#endif 3061#endif
2473#if EV_USE_SELECT 3062#if EV_USE_SELECT
2474 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2475#endif 3064#endif
2476 3065
2477 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2478 { 3067 {
2479 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2521 3110
2522inline_size void 3111inline_size void
2523loop_fork (EV_P) 3112loop_fork (EV_P)
2524{ 3113{
2525#if EV_USE_PORT 3114#if EV_USE_PORT
2526 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2527#endif 3116#endif
2528#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2529 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2530#endif 3122#endif
2531#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2532 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2533#endif 3125#endif
2534#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2535 infy_fork (EV_A); 3127 infy_fork (EV_A);
2536#endif 3128#endif
2537 3129
2538#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2539 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2540 { 3132 {
2541 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2542 3134
2543 ev_ref (EV_A); 3135 ev_ref (EV_A);
2544 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
… …
2555 postfork = 0; 3147 postfork = 0;
2556} 3148}
2557 3149
2558#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2559 3151
3152ecb_cold
2560struct ev_loop * ecb_cold 3153struct ev_loop *
2561ev_loop_new (unsigned int flags) EV_THROW 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2562{ 3155{
2563 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2564 3157
2565 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2566 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2573} 3166}
2574 3167
2575#endif /* multiplicity */ 3168#endif /* multiplicity */
2576 3169
2577#if EV_VERIFY 3170#if EV_VERIFY
2578static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2579verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2580{ 3174{
2581 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2582 3176
2583 if (w->pending) 3177 if (w->pending)
2584 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2585} 3179}
2586 3180
2587static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2588verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2589{ 3184{
2590 int i; 3185 int i;
2591 3186
2592 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2597 3192
2598 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2599 } 3194 }
2600} 3195}
2601 3196
2602static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2603array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2604{ 3200{
2605 while (cnt--) 3201 while (cnt--)
2606 { 3202 {
2607 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2610} 3206}
2611#endif 3207#endif
2612 3208
2613#if EV_FEATURE_API 3209#if EV_FEATURE_API
2614void ecb_cold 3210void ecb_cold
2615ev_verify (EV_P) EV_THROW 3211ev_verify (EV_P) EV_NOEXCEPT
2616{ 3212{
2617#if EV_VERIFY 3213#if EV_VERIFY
2618 int i; 3214 int i;
2619 WL w, w2; 3215 WL w, w2;
2620 3216
… …
2696#endif 3292#endif
2697} 3293}
2698#endif 3294#endif
2699 3295
2700#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2701struct ev_loop * ecb_cold 3298struct ev_loop *
2702#else 3299#else
2703int 3300int
2704#endif 3301#endif
2705ev_default_loop (unsigned int flags) EV_THROW 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2706{ 3303{
2707 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2708 { 3305 {
2709#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2710 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2729 3326
2730 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2731} 3328}
2732 3329
2733void 3330void
2734ev_loop_fork (EV_P) EV_THROW 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2735{ 3332{
2736 postfork = 1; 3333 postfork = 1;
2737} 3334}
2738 3335
2739/*****************************************************************************/ 3336/*****************************************************************************/
… …
2743{ 3340{
2744 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2745} 3342}
2746 3343
2747unsigned int 3344unsigned int
2748ev_pending_count (EV_P) EV_THROW 3345ev_pending_count (EV_P) EV_NOEXCEPT
2749{ 3346{
2750 int pri; 3347 int pri;
2751 unsigned int count = 0; 3348 unsigned int count = 0;
2752 3349
2753 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2754 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2755 3352
2756 return count; 3353 return count;
2757} 3354}
2758 3355
2759void noinline 3356noinline
3357void
2760ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2761{ 3359{
2762 pendingpri = NUMPRI; 3360 pendingpri = NUMPRI;
2763 3361
2764 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3362 do
2765 { 3363 {
2766 --pendingpri; 3364 --pendingpri;
2767 3365
3366 /* pendingpri possibly gets modified in the inner loop */
2768 while (pendingcnt [pendingpri]) 3367 while (pendingcnt [pendingpri])
2769 { 3368 {
2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2771 3370
2772 p->w->pending = 0; 3371 p->w->pending = 0;
2773 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2774 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2775 } 3374 }
2776 } 3375 }
3376 while (pendingpri);
2777} 3377}
2778 3378
2779#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2780/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2781/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2839 } 3439 }
2840} 3440}
2841 3441
2842#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2843 3443
2844static void noinline 3444noinline
3445static void
2845periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2846{ 3447{
2847 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2848 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2849 3450
… …
2907 } 3508 }
2908} 3509}
2909 3510
2910/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2911/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2912static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2913periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2914{ 3516{
2915 int i; 3517 int i;
2916 3518
2917 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2930 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2931} 3533}
2932#endif 3534#endif
2933 3535
2934/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2935static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2936timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2937{ 3540{
2938 int i; 3541 int i;
2939 3542
2940 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
3187 3790
3188 return activecnt; 3791 return activecnt;
3189} 3792}
3190 3793
3191void 3794void
3192ev_break (EV_P_ int how) EV_THROW 3795ev_break (EV_P_ int how) EV_NOEXCEPT
3193{ 3796{
3194 loop_done = how; 3797 loop_done = how;
3195} 3798}
3196 3799
3197void 3800void
3198ev_ref (EV_P) EV_THROW 3801ev_ref (EV_P) EV_NOEXCEPT
3199{ 3802{
3200 ++activecnt; 3803 ++activecnt;
3201} 3804}
3202 3805
3203void 3806void
3204ev_unref (EV_P) EV_THROW 3807ev_unref (EV_P) EV_NOEXCEPT
3205{ 3808{
3206 --activecnt; 3809 --activecnt;
3207} 3810}
3208 3811
3209void 3812void
3210ev_now_update (EV_P) EV_THROW 3813ev_now_update (EV_P) EV_NOEXCEPT
3211{ 3814{
3212 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
3213} 3816}
3214 3817
3215void 3818void
3216ev_suspend (EV_P) EV_THROW 3819ev_suspend (EV_P) EV_NOEXCEPT
3217{ 3820{
3218 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3219} 3822}
3220 3823
3221void 3824void
3222ev_resume (EV_P) EV_THROW 3825ev_resume (EV_P) EV_NOEXCEPT
3223{ 3826{
3224 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
3225 3828
3226 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
3227 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3266 w->pending = 0; 3869 w->pending = 0;
3267 } 3870 }
3268} 3871}
3269 3872
3270int 3873int
3271ev_clear_pending (EV_P_ void *w) EV_THROW 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3272{ 3875{
3273 W w_ = (W)w; 3876 W w_ = (W)w;
3274 int pending = w_->pending; 3877 int pending = w_->pending;
3275 3878
3276 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
3308 w->active = 0; 3911 w->active = 0;
3309} 3912}
3310 3913
3311/*****************************************************************************/ 3914/*****************************************************************************/
3312 3915
3313void noinline 3916noinline
3917void
3314ev_io_start (EV_P_ ev_io *w) EV_THROW 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3315{ 3919{
3316 int fd = w->fd; 3920 int fd = w->fd;
3317 3921
3318 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3319 return; 3923 return;
3320 3924
3321 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3925 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3322 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3323 3927
3928#if EV_VERIFY >= 2
3929 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3930#endif
3324 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
3325 3932
3326 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
3327 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3934 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3328 wlist_add (&anfds[fd].head, (WL)w); 3935 wlist_add (&anfds[fd].head, (WL)w);
3329 3936
3330 /* common bug, apparently */ 3937 /* common bug, apparently */
3331 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 3938 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3332 3939
… …
3334 w->events &= ~EV__IOFDSET; 3941 w->events &= ~EV__IOFDSET;
3335 3942
3336 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
3337} 3944}
3338 3945
3339void noinline 3946noinline
3947void
3340ev_io_stop (EV_P_ ev_io *w) EV_THROW 3948ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3341{ 3949{
3342 clear_pending (EV_A_ (W)w); 3950 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 3951 if (expect_false (!ev_is_active (w)))
3344 return; 3952 return;
3345 3953
3346 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3954 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3347 3955
3956#if EV_VERIFY >= 2
3957 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3958#endif
3348 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3349 3960
3350 wlist_del (&anfds[w->fd].head, (WL)w); 3961 wlist_del (&anfds[w->fd].head, (WL)w);
3351 ev_stop (EV_A_ (W)w); 3962 ev_stop (EV_A_ (W)w);
3352 3963
3353 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3964 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3354 3965
3355 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3356} 3967}
3357 3968
3358void noinline 3969noinline
3970void
3359ev_timer_start (EV_P_ ev_timer *w) EV_THROW 3971ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3360{ 3972{
3361 if (expect_false (ev_is_active (w))) 3973 if (expect_false (ev_is_active (w)))
3362 return; 3974 return;
3363 3975
3364 ev_at (w) += mn_now; 3976 ev_at (w) += mn_now;
… …
3367 3979
3368 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
3369 3981
3370 ++timercnt; 3982 ++timercnt;
3371 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3983 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3372 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3984 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3373 ANHE_w (timers [ev_active (w)]) = (WT)w; 3985 ANHE_w (timers [ev_active (w)]) = (WT)w;
3374 ANHE_at_cache (timers [ev_active (w)]); 3986 ANHE_at_cache (timers [ev_active (w)]);
3375 upheap (timers, ev_active (w)); 3987 upheap (timers, ev_active (w));
3376 3988
3377 EV_FREQUENT_CHECK; 3989 EV_FREQUENT_CHECK;
3378 3990
3379 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3991 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3380} 3992}
3381 3993
3382void noinline 3994noinline
3995void
3383ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 3996ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3384{ 3997{
3385 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
3386 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
3387 return; 4000 return;
3388 4001
… …
3407 ev_stop (EV_A_ (W)w); 4020 ev_stop (EV_A_ (W)w);
3408 4021
3409 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
3410} 4023}
3411 4024
3412void noinline 4025noinline
4026void
3413ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4027ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3414{ 4028{
3415 EV_FREQUENT_CHECK; 4029 EV_FREQUENT_CHECK;
3416 4030
3417 clear_pending (EV_A_ (W)w); 4031 clear_pending (EV_A_ (W)w);
3418 4032
… …
3435 4049
3436 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
3437} 4051}
3438 4052
3439ev_tstamp 4053ev_tstamp
3440ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4054ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3441{ 4055{
3442 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4056 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3443} 4057}
3444 4058
3445#if EV_PERIODIC_ENABLE 4059#if EV_PERIODIC_ENABLE
3446void noinline 4060noinline
4061void
3447ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4062ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3448{ 4063{
3449 if (expect_false (ev_is_active (w))) 4064 if (expect_false (ev_is_active (w)))
3450 return; 4065 return;
3451 4066
3452 if (w->reschedule_cb) 4067 if (w->reschedule_cb)
… …
3461 4076
3462 EV_FREQUENT_CHECK; 4077 EV_FREQUENT_CHECK;
3463 4078
3464 ++periodiccnt; 4079 ++periodiccnt;
3465 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4080 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3466 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4081 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3467 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4082 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3468 ANHE_at_cache (periodics [ev_active (w)]); 4083 ANHE_at_cache (periodics [ev_active (w)]);
3469 upheap (periodics, ev_active (w)); 4084 upheap (periodics, ev_active (w));
3470 4085
3471 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3472 4087
3473 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4088 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3474} 4089}
3475 4090
3476void noinline 4091noinline
4092void
3477ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4093ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3478{ 4094{
3479 clear_pending (EV_A_ (W)w); 4095 clear_pending (EV_A_ (W)w);
3480 if (expect_false (!ev_is_active (w))) 4096 if (expect_false (!ev_is_active (w)))
3481 return; 4097 return;
3482 4098
… …
3499 ev_stop (EV_A_ (W)w); 4115 ev_stop (EV_A_ (W)w);
3500 4116
3501 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
3502} 4118}
3503 4119
3504void noinline 4120noinline
4121void
3505ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4122ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3506{ 4123{
3507 /* TODO: use adjustheap and recalculation */ 4124 /* TODO: use adjustheap and recalculation */
3508 ev_periodic_stop (EV_A_ w); 4125 ev_periodic_stop (EV_A_ w);
3509 ev_periodic_start (EV_A_ w); 4126 ev_periodic_start (EV_A_ w);
3510} 4127}
… …
3514# define SA_RESTART 0 4131# define SA_RESTART 0
3515#endif 4132#endif
3516 4133
3517#if EV_SIGNAL_ENABLE 4134#if EV_SIGNAL_ENABLE
3518 4135
3519void noinline 4136noinline
4137void
3520ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4138ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3521{ 4139{
3522 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3523 return; 4141 return;
3524 4142
3525 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4143 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3596 } 4214 }
3597 4215
3598 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
3599} 4217}
3600 4218
3601void noinline 4219noinline
4220void
3602ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4221ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3603{ 4222{
3604 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
3605 if (expect_false (!ev_is_active (w))) 4224 if (expect_false (!ev_is_active (w)))
3606 return; 4225 return;
3607 4226
… …
3638#endif 4257#endif
3639 4258
3640#if EV_CHILD_ENABLE 4259#if EV_CHILD_ENABLE
3641 4260
3642void 4261void
3643ev_child_start (EV_P_ ev_child *w) EV_THROW 4262ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3644{ 4263{
3645#if EV_MULTIPLICITY 4264#if EV_MULTIPLICITY
3646 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4265 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3647#endif 4266#endif
3648 if (expect_false (ev_is_active (w))) 4267 if (expect_false (ev_is_active (w)))
… …
3655 4274
3656 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3657} 4276}
3658 4277
3659void 4278void
3660ev_child_stop (EV_P_ ev_child *w) EV_THROW 4279ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3661{ 4280{
3662 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3663 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3664 return; 4283 return;
3665 4284
… …
3682 4301
3683#define DEF_STAT_INTERVAL 5.0074891 4302#define DEF_STAT_INTERVAL 5.0074891
3684#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4303#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3685#define MIN_STAT_INTERVAL 0.1074891 4304#define MIN_STAT_INTERVAL 0.1074891
3686 4305
3687static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4306noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3688 4307
3689#if EV_USE_INOTIFY 4308#if EV_USE_INOTIFY
3690 4309
3691/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4310/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3692# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4311# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3693 4312
3694static void noinline 4313noinline
4314static void
3695infy_add (EV_P_ ev_stat *w) 4315infy_add (EV_P_ ev_stat *w)
3696{ 4316{
3697 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); 4317 w->wd = inotify_add_watch (fs_fd, w->path,
4318 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4319 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4320 | IN_DONT_FOLLOW | IN_MASK_ADD);
3698 4321
3699 if (w->wd >= 0) 4322 if (w->wd >= 0)
3700 { 4323 {
3701 struct statfs sfs; 4324 struct statfs sfs;
3702 4325
… …
3706 4329
3707 if (!fs_2625) 4330 if (!fs_2625)
3708 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4331 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3709 else if (!statfs (w->path, &sfs) 4332 else if (!statfs (w->path, &sfs)
3710 && (sfs.f_type == 0x1373 /* devfs */ 4333 && (sfs.f_type == 0x1373 /* devfs */
4334 || sfs.f_type == 0x4006 /* fat */
4335 || sfs.f_type == 0x4d44 /* msdos */
3711 || sfs.f_type == 0xEF53 /* ext2/3 */ 4336 || sfs.f_type == 0xEF53 /* ext2/3 */
4337 || sfs.f_type == 0x72b6 /* jffs2 */
4338 || sfs.f_type == 0x858458f6 /* ramfs */
4339 || sfs.f_type == 0x5346544e /* ntfs */
3712 || sfs.f_type == 0x3153464a /* jfs */ 4340 || sfs.f_type == 0x3153464a /* jfs */
4341 || sfs.f_type == 0x9123683e /* btrfs */
3713 || sfs.f_type == 0x52654973 /* reiser3 */ 4342 || sfs.f_type == 0x52654973 /* reiser3 */
3714 || sfs.f_type == 0x01021994 /* tempfs */ 4343 || sfs.f_type == 0x01021994 /* tmpfs */
3715 || sfs.f_type == 0x58465342 /* xfs */)) 4344 || sfs.f_type == 0x58465342 /* xfs */))
3716 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4345 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3717 else 4346 else
3718 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4347 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3719 } 4348 }
… …
3754 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4383 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3755 ev_timer_again (EV_A_ &w->timer); 4384 ev_timer_again (EV_A_ &w->timer);
3756 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4385 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3757} 4386}
3758 4387
3759static void noinline 4388noinline
4389static void
3760infy_del (EV_P_ ev_stat *w) 4390infy_del (EV_P_ ev_stat *w)
3761{ 4391{
3762 int slot; 4392 int slot;
3763 int wd = w->wd; 4393 int wd = w->wd;
3764 4394
… …
3771 4401
3772 /* remove this watcher, if others are watching it, they will rearm */ 4402 /* remove this watcher, if others are watching it, they will rearm */
3773 inotify_rm_watch (fs_fd, wd); 4403 inotify_rm_watch (fs_fd, wd);
3774} 4404}
3775 4405
3776static void noinline 4406noinline
4407static void
3777infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4408infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3778{ 4409{
3779 if (slot < 0) 4410 if (slot < 0)
3780 /* overflow, need to check for all hash slots */ 4411 /* overflow, need to check for all hash slots */
3781 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3817 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4448 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3818 ofs += sizeof (struct inotify_event) + ev->len; 4449 ofs += sizeof (struct inotify_event) + ev->len;
3819 } 4450 }
3820} 4451}
3821 4452
3822inline_size void ecb_cold 4453inline_size ecb_cold
4454void
3823ev_check_2625 (EV_P) 4455ev_check_2625 (EV_P)
3824{ 4456{
3825 /* kernels < 2.6.25 are borked 4457 /* kernels < 2.6.25 are borked
3826 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4458 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3827 */ 4459 */
… …
3917#else 4549#else
3918# define EV_LSTAT(p,b) lstat (p, b) 4550# define EV_LSTAT(p,b) lstat (p, b)
3919#endif 4551#endif
3920 4552
3921void 4553void
3922ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4554ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3923{ 4555{
3924 if (lstat (w->path, &w->attr) < 0) 4556 if (lstat (w->path, &w->attr) < 0)
3925 w->attr.st_nlink = 0; 4557 w->attr.st_nlink = 0;
3926 else if (!w->attr.st_nlink) 4558 else if (!w->attr.st_nlink)
3927 w->attr.st_nlink = 1; 4559 w->attr.st_nlink = 1;
3928} 4560}
3929 4561
3930static void noinline 4562noinline
4563static void
3931stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4564stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3932{ 4565{
3933 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4566 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3934 4567
3935 ev_statdata prev = w->attr; 4568 ev_statdata prev = w->attr;
… …
3966 ev_feed_event (EV_A_ w, EV_STAT); 4599 ev_feed_event (EV_A_ w, EV_STAT);
3967 } 4600 }
3968} 4601}
3969 4602
3970void 4603void
3971ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4604ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3972{ 4605{
3973 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3974 return; 4607 return;
3975 4608
3976 ev_stat_stat (EV_A_ w); 4609 ev_stat_stat (EV_A_ w);
… …
3997 4630
3998 EV_FREQUENT_CHECK; 4631 EV_FREQUENT_CHECK;
3999} 4632}
4000 4633
4001void 4634void
4002ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4635ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4003{ 4636{
4004 clear_pending (EV_A_ (W)w); 4637 clear_pending (EV_A_ (W)w);
4005 if (expect_false (!ev_is_active (w))) 4638 if (expect_false (!ev_is_active (w)))
4006 return; 4639 return;
4007 4640
… …
4023} 4656}
4024#endif 4657#endif
4025 4658
4026#if EV_IDLE_ENABLE 4659#if EV_IDLE_ENABLE
4027void 4660void
4028ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4661ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4029{ 4662{
4030 if (expect_false (ev_is_active (w))) 4663 if (expect_false (ev_is_active (w)))
4031 return; 4664 return;
4032 4665
4033 pri_adjust (EV_A_ (W)w); 4666 pri_adjust (EV_A_ (W)w);
… …
4038 int active = ++idlecnt [ABSPRI (w)]; 4671 int active = ++idlecnt [ABSPRI (w)];
4039 4672
4040 ++idleall; 4673 ++idleall;
4041 ev_start (EV_A_ (W)w, active); 4674 ev_start (EV_A_ (W)w, active);
4042 4675
4043 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4676 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4044 idles [ABSPRI (w)][active - 1] = w; 4677 idles [ABSPRI (w)][active - 1] = w;
4045 } 4678 }
4046 4679
4047 EV_FREQUENT_CHECK; 4680 EV_FREQUENT_CHECK;
4048} 4681}
4049 4682
4050void 4683void
4051ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4684ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4052{ 4685{
4053 clear_pending (EV_A_ (W)w); 4686 clear_pending (EV_A_ (W)w);
4054 if (expect_false (!ev_is_active (w))) 4687 if (expect_false (!ev_is_active (w)))
4055 return; 4688 return;
4056 4689
… …
4070} 4703}
4071#endif 4704#endif
4072 4705
4073#if EV_PREPARE_ENABLE 4706#if EV_PREPARE_ENABLE
4074void 4707void
4075ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4708ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4076{ 4709{
4077 if (expect_false (ev_is_active (w))) 4710 if (expect_false (ev_is_active (w)))
4078 return; 4711 return;
4079 4712
4080 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
4081 4714
4082 ev_start (EV_A_ (W)w, ++preparecnt); 4715 ev_start (EV_A_ (W)w, ++preparecnt);
4083 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4716 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4084 prepares [preparecnt - 1] = w; 4717 prepares [preparecnt - 1] = w;
4085 4718
4086 EV_FREQUENT_CHECK; 4719 EV_FREQUENT_CHECK;
4087} 4720}
4088 4721
4089void 4722void
4090ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4723ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4091{ 4724{
4092 clear_pending (EV_A_ (W)w); 4725 clear_pending (EV_A_ (W)w);
4093 if (expect_false (!ev_is_active (w))) 4726 if (expect_false (!ev_is_active (w)))
4094 return; 4727 return;
4095 4728
… …
4108} 4741}
4109#endif 4742#endif
4110 4743
4111#if EV_CHECK_ENABLE 4744#if EV_CHECK_ENABLE
4112void 4745void
4113ev_check_start (EV_P_ ev_check *w) EV_THROW 4746ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4114{ 4747{
4115 if (expect_false (ev_is_active (w))) 4748 if (expect_false (ev_is_active (w)))
4116 return; 4749 return;
4117 4750
4118 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
4119 4752
4120 ev_start (EV_A_ (W)w, ++checkcnt); 4753 ev_start (EV_A_ (W)w, ++checkcnt);
4121 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4754 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4122 checks [checkcnt - 1] = w; 4755 checks [checkcnt - 1] = w;
4123 4756
4124 EV_FREQUENT_CHECK; 4757 EV_FREQUENT_CHECK;
4125} 4758}
4126 4759
4127void 4760void
4128ev_check_stop (EV_P_ ev_check *w) EV_THROW 4761ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4129{ 4762{
4130 clear_pending (EV_A_ (W)w); 4763 clear_pending (EV_A_ (W)w);
4131 if (expect_false (!ev_is_active (w))) 4764 if (expect_false (!ev_is_active (w)))
4132 return; 4765 return;
4133 4766
… …
4145 EV_FREQUENT_CHECK; 4778 EV_FREQUENT_CHECK;
4146} 4779}
4147#endif 4780#endif
4148 4781
4149#if EV_EMBED_ENABLE 4782#if EV_EMBED_ENABLE
4150void noinline 4783noinline
4784void
4151ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 4785ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4152{ 4786{
4153 ev_run (w->other, EVRUN_NOWAIT); 4787 ev_run (w->other, EVRUN_NOWAIT);
4154} 4788}
4155 4789
4156static void 4790static void
… …
4204 ev_idle_stop (EV_A_ idle); 4838 ev_idle_stop (EV_A_ idle);
4205} 4839}
4206#endif 4840#endif
4207 4841
4208void 4842void
4209ev_embed_start (EV_P_ ev_embed *w) EV_THROW 4843ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4210{ 4844{
4211 if (expect_false (ev_is_active (w))) 4845 if (expect_false (ev_is_active (w)))
4212 return; 4846 return;
4213 4847
4214 { 4848 {
… …
4235 4869
4236 EV_FREQUENT_CHECK; 4870 EV_FREQUENT_CHECK;
4237} 4871}
4238 4872
4239void 4873void
4240ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 4874ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4241{ 4875{
4242 clear_pending (EV_A_ (W)w); 4876 clear_pending (EV_A_ (W)w);
4243 if (expect_false (!ev_is_active (w))) 4877 if (expect_false (!ev_is_active (w)))
4244 return; 4878 return;
4245 4879
… …
4255} 4889}
4256#endif 4890#endif
4257 4891
4258#if EV_FORK_ENABLE 4892#if EV_FORK_ENABLE
4259void 4893void
4260ev_fork_start (EV_P_ ev_fork *w) EV_THROW 4894ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4261{ 4895{
4262 if (expect_false (ev_is_active (w))) 4896 if (expect_false (ev_is_active (w)))
4263 return; 4897 return;
4264 4898
4265 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
4266 4900
4267 ev_start (EV_A_ (W)w, ++forkcnt); 4901 ev_start (EV_A_ (W)w, ++forkcnt);
4268 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4902 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4269 forks [forkcnt - 1] = w; 4903 forks [forkcnt - 1] = w;
4270 4904
4271 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
4272} 4906}
4273 4907
4274void 4908void
4275ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 4909ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4276{ 4910{
4277 clear_pending (EV_A_ (W)w); 4911 clear_pending (EV_A_ (W)w);
4278 if (expect_false (!ev_is_active (w))) 4912 if (expect_false (!ev_is_active (w)))
4279 return; 4913 return;
4280 4914
… …
4293} 4927}
4294#endif 4928#endif
4295 4929
4296#if EV_CLEANUP_ENABLE 4930#if EV_CLEANUP_ENABLE
4297void 4931void
4298ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 4932ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4299{ 4933{
4300 if (expect_false (ev_is_active (w))) 4934 if (expect_false (ev_is_active (w)))
4301 return; 4935 return;
4302 4936
4303 EV_FREQUENT_CHECK; 4937 EV_FREQUENT_CHECK;
4304 4938
4305 ev_start (EV_A_ (W)w, ++cleanupcnt); 4939 ev_start (EV_A_ (W)w, ++cleanupcnt);
4306 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4940 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4307 cleanups [cleanupcnt - 1] = w; 4941 cleanups [cleanupcnt - 1] = w;
4308 4942
4309 /* cleanup watchers should never keep a refcount on the loop */ 4943 /* cleanup watchers should never keep a refcount on the loop */
4310 ev_unref (EV_A); 4944 ev_unref (EV_A);
4311 EV_FREQUENT_CHECK; 4945 EV_FREQUENT_CHECK;
4312} 4946}
4313 4947
4314void 4948void
4315ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 4949ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4316{ 4950{
4317 clear_pending (EV_A_ (W)w); 4951 clear_pending (EV_A_ (W)w);
4318 if (expect_false (!ev_is_active (w))) 4952 if (expect_false (!ev_is_active (w)))
4319 return; 4953 return;
4320 4954
… …
4334} 4968}
4335#endif 4969#endif
4336 4970
4337#if EV_ASYNC_ENABLE 4971#if EV_ASYNC_ENABLE
4338void 4972void
4339ev_async_start (EV_P_ ev_async *w) EV_THROW 4973ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4340{ 4974{
4341 if (expect_false (ev_is_active (w))) 4975 if (expect_false (ev_is_active (w)))
4342 return; 4976 return;
4343 4977
4344 w->sent = 0; 4978 w->sent = 0;
… …
4346 evpipe_init (EV_A); 4980 evpipe_init (EV_A);
4347 4981
4348 EV_FREQUENT_CHECK; 4982 EV_FREQUENT_CHECK;
4349 4983
4350 ev_start (EV_A_ (W)w, ++asynccnt); 4984 ev_start (EV_A_ (W)w, ++asynccnt);
4351 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4985 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4352 asyncs [asynccnt - 1] = w; 4986 asyncs [asynccnt - 1] = w;
4353 4987
4354 EV_FREQUENT_CHECK; 4988 EV_FREQUENT_CHECK;
4355} 4989}
4356 4990
4357void 4991void
4358ev_async_stop (EV_P_ ev_async *w) EV_THROW 4992ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4359{ 4993{
4360 clear_pending (EV_A_ (W)w); 4994 clear_pending (EV_A_ (W)w);
4361 if (expect_false (!ev_is_active (w))) 4995 if (expect_false (!ev_is_active (w)))
4362 return; 4996 return;
4363 4997
… …
4374 5008
4375 EV_FREQUENT_CHECK; 5009 EV_FREQUENT_CHECK;
4376} 5010}
4377 5011
4378void 5012void
4379ev_async_send (EV_P_ ev_async *w) EV_THROW 5013ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4380{ 5014{
4381 w->sent = 1; 5015 w->sent = 1;
4382 evpipe_write (EV_A_ &async_pending); 5016 evpipe_write (EV_A_ &async_pending);
4383} 5017}
4384#endif 5018#endif
… …
4421 5055
4422 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4423} 5057}
4424 5058
4425void 5059void
4426ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4427{ 5061{
4428 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4429
4430 if (expect_false (!once))
4431 {
4432 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4433 return;
4434 }
4435 5063
4436 once->cb = cb; 5064 once->cb = cb;
4437 once->arg = arg; 5065 once->arg = arg;
4438 5066
4439 ev_init (&once->io, once_cb_io); 5067 ev_init (&once->io, once_cb_io);
… …
4452} 5080}
4453 5081
4454/*****************************************************************************/ 5082/*****************************************************************************/
4455 5083
4456#if EV_WALK_ENABLE 5084#if EV_WALK_ENABLE
4457void ecb_cold 5085ecb_cold
5086void
4458ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5087ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4459{ 5088{
4460 int i, j; 5089 int i, j;
4461 ev_watcher_list *wl, *wn; 5090 ev_watcher_list *wl, *wn;
4462 5091
4463 if (types & (EV_IO | EV_EMBED)) 5092 if (types & (EV_IO | EV_EMBED))

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