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Comparing libev/ev.c (file contents):
Revision 1.403 by root, Wed Jan 18 12:13:14 2012 UTC vs.
Revision 1.490 by root, Thu Jun 20 22:44:59 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 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
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
162# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
163# endif 163# endif
164 164
165#endif 165#endif
166 166
167/* OS X, in its infinite idiocy, actually HARDCODES
168 * a limit of 1024 into their select. Where people have brains,
169 * OS X engineers apparently have a vacuum. Or maybe they were
170 * ordered to have a vacuum, or they do anything for money.
171 * This might help. Or not.
172 * Note that this must be defined early, as other include files
173 * will rely on this define as well.
174 */
175#define _DARWIN_UNLIMITED_SELECT 1
176
167#include <stdlib.h> 177#include <stdlib.h>
168#include <string.h> 178#include <string.h>
169#include <fcntl.h> 179#include <fcntl.h>
170#include <stddef.h> 180#include <stddef.h>
171 181
… …
183# include EV_H 193# include EV_H
184#else 194#else
185# include "ev.h" 195# include "ev.h"
186#endif 196#endif
187 197
198#if EV_NO_THREADS
199# undef EV_NO_SMP
200# define EV_NO_SMP 1
201# undef ECB_NO_THREADS
202# define ECB_NO_THREADS 1
203#endif
204#if EV_NO_SMP
205# undef EV_NO_SMP
206# define ECB_NO_SMP 1
207#endif
208
188#ifndef _WIN32 209#ifndef _WIN32
189# include <sys/time.h> 210# include <sys/time.h>
190# include <sys/wait.h> 211# include <sys/wait.h>
191# include <unistd.h> 212# include <unistd.h>
192#else 213#else
193# include <io.h> 214# include <io.h>
194# define WIN32_LEAN_AND_MEAN 215# define WIN32_LEAN_AND_MEAN
216# include <winsock2.h>
195# include <windows.h> 217# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 218# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 219# define EV_SELECT_IS_WINSOCKET 1
198# endif 220# endif
199# undef EV_AVOID_STDIO 221# undef EV_AVOID_STDIO
200#endif 222#endif
201 223
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 224/* this block tries to deduce configuration from header-defined symbols and defaults */
211 225
212/* try to deduce the maximum number of signals on this platform */ 226/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 227#if defined EV_NSIG
214/* use what's provided */ 228/* use what's provided */
215#elif defined (NSIG) 229#elif defined NSIG
216# define EV_NSIG (NSIG) 230# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 231#elif defined _NSIG
218# define EV_NSIG (_NSIG) 232# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 233#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 234# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 235#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 236# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 237#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 238# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 239#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 240# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 241#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 242# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 243#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 244# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 245#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 246# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 247#else
234# error "unable to find value for NSIG, please report" 248# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 249#endif
239 250
240#ifndef EV_USE_FLOOR 251#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 252# define EV_USE_FLOOR 0
242#endif 253#endif
243 254
244#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 258# else
248# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
249# endif 260# endif
250#endif 261#endif
251 262
263#if !(_POSIX_TIMERS > 0)
264# ifndef EV_USE_MONOTONIC
265# define EV_USE_MONOTONIC 0
266# endif
267# ifndef EV_USE_REALTIME
268# define EV_USE_REALTIME 0
269# endif
270#endif
271
252#ifndef EV_USE_MONOTONIC 272#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 273# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 274# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 275# else
256# define EV_USE_MONOTONIC 0 276# define EV_USE_MONOTONIC 0
257# endif 277# endif
258#endif 278#endif
… …
295 315
296#ifndef EV_USE_PORT 316#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 317# define EV_USE_PORT 0
298#endif 318#endif
299 319
320#ifndef EV_USE_LINUXAIO
321# define EV_USE_LINUXAIO 0
322#endif
323
300#ifndef EV_USE_INOTIFY 324#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 326# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 327# else
304# define EV_USE_INOTIFY 0 328# define EV_USE_INOTIFY 0
… …
345 369
346#ifndef EV_HEAP_CACHE_AT 370#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 371# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 372#endif
349 373
374#ifdef __ANDROID__
375/* supposedly, android doesn't typedef fd_mask */
376# undef EV_USE_SELECT
377# define EV_USE_SELECT 0
378/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
379# undef EV_USE_CLOCK_SYSCALL
380# define EV_USE_CLOCK_SYSCALL 0
381#endif
382
383/* aix's poll.h seems to cause lots of trouble */
384#ifdef _AIX
385/* AIX has a completely broken poll.h header */
386# undef EV_USE_POLL
387# define EV_USE_POLL 0
388#endif
389
390#if EV_USE_LINUXAIO
391# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
392#endif
393
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 394/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */ 395/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 396#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 397# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 398# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 399# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 400# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 401# define EV_USE_MONOTONIC 1
358# else 402# else
… …
361# endif 405# endif
362#endif 406#endif
363 407
364/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 408/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365 409
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 410#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 411# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 412# define EV_USE_MONOTONIC 0
375#endif 413#endif
376 414
… …
384# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
385#endif 423#endif
386 424
387#if !EV_USE_NANOSLEEP 425#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 426/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 427# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 428# include <sys/select.h>
391# endif 429# endif
392#endif 430#endif
393 431
394#if EV_USE_INOTIFY 432#if EV_USE_INOTIFY
… …
397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 435/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
398# ifndef IN_DONT_FOLLOW 436# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 437# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 438# define EV_USE_INOTIFY 0
401# endif 439# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 440#endif
407 441
408#if EV_USE_EVENTFD 442#if EV_USE_EVENTFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 444# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 501/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 502/* ECB.H BEGIN */
469/* 503/*
470 * libecb - http://software.schmorp.de/pkg/libecb 504 * libecb - http://software.schmorp.de/pkg/libecb
471 * 505 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 506 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 507 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 508 * All rights reserved.
475 * 509 *
476 * Redistribution and use in source and binary forms, with or without modifica- 510 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 511 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 525 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 526 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 527 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 528 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 529 * OF THE POSSIBILITY OF SUCH DAMAGE.
530 *
531 * Alternatively, the contents of this file may be used under the terms of
532 * the GNU General Public License ("GPL") version 2 or any later version,
533 * in which case the provisions of the GPL are applicable instead of
534 * the above. If you wish to allow the use of your version of this file
535 * only under the terms of the GPL and not to allow others to use your
536 * version of this file under the BSD license, indicate your decision
537 * by deleting the provisions above and replace them with the notice
538 * and other provisions required by the GPL. If you do not delete the
539 * provisions above, a recipient may use your version of this file under
540 * either the BSD or the GPL.
496 */ 541 */
497 542
498#ifndef ECB_H 543#ifndef ECB_H
499#define ECB_H 544#define ECB_H
545
546/* 16 bits major, 16 bits minor */
547#define ECB_VERSION 0x00010005
500 548
501#ifdef _WIN32 549#ifdef _WIN32
502 typedef signed char int8_t; 550 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 551 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 552 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 558 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 559 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 560 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 561 typedef unsigned __int64 uint64_t;
514 #endif 562 #endif
563 #ifdef _WIN64
564 #define ECB_PTRSIZE 8
565 typedef uint64_t uintptr_t;
566 typedef int64_t intptr_t;
567 #else
568 #define ECB_PTRSIZE 4
569 typedef uint32_t uintptr_t;
570 typedef int32_t intptr_t;
571 #endif
515#else 572#else
516 #include <inttypes.h> 573 #include <inttypes.h>
574 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
575 #define ECB_PTRSIZE 8
576 #else
577 #define ECB_PTRSIZE 4
578 #endif
579#endif
580
581#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
582#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
583
584/* work around x32 idiocy by defining proper macros */
585#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
586 #if _ILP32
587 #define ECB_AMD64_X32 1
588 #else
589 #define ECB_AMD64 1
590 #endif
517#endif 591#endif
518 592
519/* many compilers define _GNUC_ to some versions but then only implement 593/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 594 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 595 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 596 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 597 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 598 * an issue with that they should have done it right in the first place.
525 */ 599 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 600#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 601 #define ECB_GCC_VERSION(major,minor) 0
529 #else 602#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 603 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 604#endif
605
606#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
607
608#if __clang__ && defined __has_builtin
609 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
610#else
611 #define ECB_CLANG_BUILTIN(x) 0
612#endif
613
614#if __clang__ && defined __has_extension
615 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
616#else
617 #define ECB_CLANG_EXTENSION(x) 0
618#endif
619
620#define ECB_CPP (__cplusplus+0)
621#define ECB_CPP11 (__cplusplus >= 201103L)
622#define ECB_CPP14 (__cplusplus >= 201402L)
623#define ECB_CPP17 (__cplusplus >= 201703L)
624
625#if ECB_CPP
626 #define ECB_C 0
627 #define ECB_STDC_VERSION 0
628#else
629 #define ECB_C 1
630 #define ECB_STDC_VERSION __STDC_VERSION__
631#endif
632
633#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
634#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
635#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
636
637#if ECB_CPP
638 #define ECB_EXTERN_C extern "C"
639 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
640 #define ECB_EXTERN_C_END }
641#else
642 #define ECB_EXTERN_C extern
643 #define ECB_EXTERN_C_BEG
644 #define ECB_EXTERN_C_END
532#endif 645#endif
533 646
534/*****************************************************************************/ 647/*****************************************************************************/
535 648
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 649/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 650/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 651
539#if ECB_NO_THREADS || ECB_NO_SMP 652#if ECB_NO_THREADS
653 #define ECB_NO_SMP 1
654#endif
655
656#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 657 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 658#endif
542 659
660/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
661#if __xlC__ && ECB_CPP
662 #include <builtins.h>
663#endif
664
665#if 1400 <= _MSC_VER
666 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
667#endif
668
543#ifndef ECB_MEMORY_FENCE 669#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_xC >= 0x5110 670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386__ 671 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 673 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 674 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 675 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 676 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 677 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 678 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 679 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
681 #elif defined __ARM_ARCH_2__ \
682 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
683 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
684 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
685 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
686 || defined __ARM_ARCH_5TEJ__
687 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 688 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 689 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
690 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 691 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 692 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 693 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif defined(__sparc) 695 #elif __aarch64__
696 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
697 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory") 699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
701 #elif defined __s390__ || defined __s390x__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
703 #elif defined __mips__
704 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
705 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
707 #elif defined __alpha__
708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
709 #elif defined __hppa__
710 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore") 711 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
712 #elif defined __ia64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
714 #elif defined __m68k__
715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
716 #elif defined __m88k__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
718 #elif defined __sh__
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
565 #endif 720 #endif
566 #endif 721 #endif
567#endif 722#endif
568 723
569#ifndef ECB_MEMORY_FENCE 724#ifndef ECB_MEMORY_FENCE
725 #if ECB_GCC_VERSION(4,7)
726 /* see comment below (stdatomic.h) about the C11 memory model. */
727 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
728 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
729 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
730
731 #elif ECB_CLANG_EXTENSION(c_atomic)
732 /* see comment below (stdatomic.h) about the C11 memory model. */
733 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
734 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
735 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
736
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
571 #define ECB_MEMORY_FENCE __sync_synchronize () 738 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 740 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
741 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
742 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
743 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
744 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 748 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32) 750 #elif defined _WIN32
580 #include <WinNT.h> 751 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h> 754 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier () 755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 757 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
758 #elif __xlC__
759 #define ECB_MEMORY_FENCE __sync ()
760 #endif
761#endif
762
763#ifndef ECB_MEMORY_FENCE
764 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
765 /* we assume that these memory fences work on all variables/all memory accesses, */
766 /* not just C11 atomics and atomic accesses */
767 #include <stdatomic.h>
768 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
769 /* any fence other than seq_cst, which isn't very efficient for us. */
770 /* Why that is, we don't know - either the C11 memory model is quite useless */
771 /* for most usages, or gcc and clang have a bug */
772 /* I *currently* lean towards the latter, and inefficiently implement */
773 /* all three of ecb's fences as a seq_cst fence */
774 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
775 /* for all __atomic_thread_fence's except seq_cst */
776 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
587 #endif 777 #endif
588#endif 778#endif
589 779
590#ifndef ECB_MEMORY_FENCE 780#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS 781 #if !ECB_AVOID_PTHREADS
… …
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 794 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif 795 #endif
606#endif 796#endif
607 797
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif 800#endif
611 801
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif 804#endif
615 805
616/*****************************************************************************/ 806/*****************************************************************************/
617 807
618#define ECB_C99 (__STDC_VERSION__ >= 199901L) 808#if ECB_CPP
619
620#if __cplusplus
621 #define ecb_inline static inline 809 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5) 810#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__ 811 #define ecb_inline static __inline__
624#elif ECB_C99 812#elif ECB_C99
625 #define ecb_inline static inline 813 #define ecb_inline static inline
… …
639 827
640#define ECB_CONCAT_(a, b) a ## b 828#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a 830#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 831#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
832#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
644 833
645#define ecb_function_ ecb_inline 834#define ecb_function_ ecb_inline
646 835
647#if ECB_GCC_VERSION(3,1) 836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
648 #define ecb_attribute(attrlist) __attribute__(attrlist) 837 #define ecb_attribute(attrlist) __attribute__ (attrlist)
838#else
839 #define ecb_attribute(attrlist)
840#endif
841
842#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr) 843 #define ecb_is_constant(expr) __builtin_constant_p (expr)
844#else
845 /* possible C11 impl for integral types
846 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
847 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
848
849 #define ecb_is_constant(expr) 0
850#endif
851
852#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 853 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
854#else
855 #define ecb_expect(expr,value) (expr)
856#endif
857
858#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else 860#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality) 861 #define ecb_prefetch(addr,rw,locality)
657#endif 862#endif
658 863
659/* no emulation for ecb_decltype */ 864/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5) 865#if ECB_CPP11
866 // older implementations might have problems with decltype(x)::type, work around it
867 template<class T> struct ecb_decltype_t { typedef T type; };
661 #define ecb_decltype(x) __decltype(x) 868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
662#elif ECB_GCC_VERSION(3,0) 869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
663 #define ecb_decltype(x) __typeof(x) 870 #define ecb_decltype(x) __typeof__ (x)
664#endif 871#endif
665 872
873#if _MSC_VER >= 1300
874 #define ecb_deprecated __declspec (deprecated)
875#else
876 #define ecb_deprecated ecb_attribute ((__deprecated__))
877#endif
878
879#if _MSC_VER >= 1500
880 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
881#elif ECB_GCC_VERSION(4,5)
882 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
883#else
884 #define ecb_deprecated_message(msg) ecb_deprecated
885#endif
886
887#if _MSC_VER >= 1400
888 #define ecb_noinline __declspec (noinline)
889#else
666#define ecb_noinline ecb_attribute ((__noinline__)) 890 #define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__)) 891#endif
892
668#define ecb_unused ecb_attribute ((__unused__)) 893#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__)) 894#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__)) 895#define ecb_pure ecb_attribute ((__pure__))
896
897#if ECB_C11 || __IBMC_NORETURN
898 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
899 #define ecb_noreturn _Noreturn
900#elif ECB_CPP11
901 #define ecb_noreturn [[noreturn]]
902#elif _MSC_VER >= 1200
903 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
904 #define ecb_noreturn __declspec (noreturn)
905#else
906 #define ecb_noreturn ecb_attribute ((__noreturn__))
907#endif
671 908
672#if ECB_GCC_VERSION(4,3) 909#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__)) 910 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__)) 911 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__)) 912 #define ecb_cold ecb_attribute ((__cold__))
… …
687/* for compatibility to the rest of the world */ 924/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr) 925#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr) 926#define ecb_unlikely(expr) ecb_expect_false (expr)
690 927
691/* count trailing zero bits and count # of one bits */ 928/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4) 929#if ECB_GCC_VERSION(3,4) \
930 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
931 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
932 && ECB_CLANG_BUILTIN(__builtin_popcount))
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 933 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x) 936 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x) 937 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x) 938 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */ 939 /* no popcountll */
700#else 940#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
702 ecb_function_ int 942 ecb_function_ ecb_const int
703 ecb_ctz32 (uint32_t x) 943 ecb_ctz32 (uint32_t x)
704 { 944 {
945#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
946 unsigned long r;
947 _BitScanForward (&r, x);
948 return (int)r;
949#else
705 int r = 0; 950 int r = 0;
706 951
707 x &= ~x + 1; /* this isolates the lowest bit */ 952 x &= ~x + 1; /* this isolates the lowest bit */
708 953
709#if ECB_branchless_on_i386 954#if ECB_branchless_on_i386
… …
719 if (x & 0xff00ff00) r += 8; 964 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16; 965 if (x & 0xffff0000) r += 16;
721#endif 966#endif
722 967
723 return r; 968 return r;
969#endif
724 } 970 }
725 971
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
727 ecb_function_ int 973 ecb_function_ ecb_const int
728 ecb_ctz64 (uint64_t x) 974 ecb_ctz64 (uint64_t x)
729 { 975 {
976#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
977 unsigned long r;
978 _BitScanForward64 (&r, x);
979 return (int)r;
980#else
730 int shift = x & 0xffffffffU ? 0 : 32; 981 int shift = x & 0xffffffff ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift; 982 return ecb_ctz32 (x >> shift) + shift;
983#endif
732 } 984 }
733 985
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
735 ecb_function_ int 987 ecb_function_ ecb_const int
736 ecb_popcount32 (uint32_t x) 988 ecb_popcount32 (uint32_t x)
737 { 989 {
738 x -= (x >> 1) & 0x55555555; 990 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f; 992 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101; 993 x *= 0x01010101;
742 994
743 return x >> 24; 995 return x >> 24;
744 } 996 }
745 997
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
747 ecb_function_ int ecb_ld32 (uint32_t x) 999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
748 { 1000 {
1001#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1002 unsigned long r;
1003 _BitScanReverse (&r, x);
1004 return (int)r;
1005#else
749 int r = 0; 1006 int r = 0;
750 1007
751 if (x >> 16) { x >>= 16; r += 16; } 1008 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; } 1009 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; } 1010 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; } 1011 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; } 1012 if (x >> 1) { r += 1; }
756 1013
757 return r; 1014 return r;
1015#endif
758 } 1016 }
759 1017
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
761 ecb_function_ int ecb_ld64 (uint64_t x) 1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
762 { 1020 {
1021#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1022 unsigned long r;
1023 _BitScanReverse64 (&r, x);
1024 return (int)r;
1025#else
763 int r = 0; 1026 int r = 0;
764 1027
765 if (x >> 32) { x >>= 32; r += 32; } 1028 if (x >> 32) { x >>= 32; r += 32; }
766 1029
767 return r + ecb_ld32 (x); 1030 return r + ecb_ld32 (x);
1031#endif
768 } 1032 }
769#endif 1033#endif
770 1034
1035ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1036ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1037ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1038ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1039
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
773{ 1042{
774 return ( (x * 0x0802U & 0x22110U) 1043 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776} 1045}
777 1046
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
780{ 1049{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8); 1053 x = ( x >> 8 ) | ( x << 8);
785 1054
786 return x; 1055 return x;
787} 1056}
788 1057
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
791{ 1060{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
798 return x; 1067 return x;
799} 1068}
800 1069
801/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */ 1071/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
804ecb_function_ int 1073ecb_function_ ecb_const int
805ecb_popcount64 (uint64_t x) 1074ecb_popcount64 (uint64_t x)
806{ 1075{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808} 1077}
809 1078
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1079ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1080ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1081ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1082ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1083ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1084ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1085ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1086ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
818 1087
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1088ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1089ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1090ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1091ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1092ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1093ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1094ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1095ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827 1096
828#if ECB_GCC_VERSION(4,3) 1097#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1098 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1099 #define ecb_bswap16(x) __builtin_bswap16 (x)
1100 #else
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
830 #define ecb_bswap32(x) __builtin_bswap32 (x) 1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x) 1104 #define ecb_bswap64(x) __builtin_bswap64 (x)
1105#elif _MSC_VER
1106 #include <stdlib.h>
1107 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1108 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1109 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
832#else 1110#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
834 ecb_function_ uint16_t 1112 ecb_function_ ecb_const uint16_t
835 ecb_bswap16 (uint16_t x) 1113 ecb_bswap16 (uint16_t x)
836 { 1114 {
837 return ecb_rotl16 (x, 8); 1115 return ecb_rotl16 (x, 8);
838 } 1116 }
839 1117
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
841 ecb_function_ uint32_t 1119 ecb_function_ ecb_const uint32_t
842 ecb_bswap32 (uint32_t x) 1120 ecb_bswap32 (uint32_t x)
843 { 1121 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 } 1123 }
846 1124
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
848 ecb_function_ uint64_t 1126 ecb_function_ ecb_const uint64_t
849 ecb_bswap64 (uint64_t x) 1127 ecb_bswap64 (uint64_t x)
850 { 1128 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 } 1130 }
853#endif 1131#endif
854 1132
855#if ECB_GCC_VERSION(4,5) 1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
856 #define ecb_unreachable() __builtin_unreachable () 1134 #define ecb_unreachable() __builtin_unreachable ()
857#else 1135#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1136 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
860 ecb_function_ void ecb_unreachable (void) { } 1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
861#endif 1139#endif
862 1140
863/* try to tell the compiler that some condition is definitely true */ 1141/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
865 1143
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
867ecb_function_ unsigned char 1145ecb_inline ecb_const uint32_t
868ecb_byteorder_helper (void) 1146ecb_byteorder_helper (void)
869{ 1147{
870 const uint32_t u = 0x11223344; 1148 /* the union code still generates code under pressure in gcc, */
871 return *(unsigned char *)&u; 1149 /* but less than using pointers, and always seems to */
1150 /* successfully return a constant. */
1151 /* the reason why we have this horrible preprocessor mess */
1152 /* is to avoid it in all cases, at least on common architectures */
1153 /* or when using a recent enough gcc version (>= 4.6) */
1154#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1155 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1156 #define ECB_LITTLE_ENDIAN 1
1157 return 0x44332211;
1158#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1159 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1160 #define ECB_BIG_ENDIAN 1
1161 return 0x11223344;
1162#else
1163 union
1164 {
1165 uint8_t c[4];
1166 uint32_t u;
1167 } u = { 0x11, 0x22, 0x33, 0x44 };
1168 return u.u;
1169#endif
872} 1170}
873 1171
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1173ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1175ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
878 1176
879#if ECB_GCC_VERSION(3,0) || ECB_C99 1177#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1178 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else 1179#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1180 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif 1181#endif
884 1182
885#if __cplusplus 1183#if ECB_CPP
886 template<typename T> 1184 template<typename T>
887 static inline T ecb_div_rd (T val, T div) 1185 static inline T ecb_div_rd (T val, T div)
888 { 1186 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 } 1188 }
… …
907 } 1205 }
908#else 1206#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif 1208#endif
911 1209
1210ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1211ecb_function_ ecb_const uint32_t
1212ecb_binary16_to_binary32 (uint32_t x)
1213{
1214 unsigned int s = (x & 0x8000) << (31 - 15);
1215 int e = (x >> 10) & 0x001f;
1216 unsigned int m = x & 0x03ff;
1217
1218 if (ecb_expect_false (e == 31))
1219 /* infinity or NaN */
1220 e = 255 - (127 - 15);
1221 else if (ecb_expect_false (!e))
1222 {
1223 if (ecb_expect_true (!m))
1224 /* zero, handled by code below by forcing e to 0 */
1225 e = 0 - (127 - 15);
1226 else
1227 {
1228 /* subnormal, renormalise */
1229 unsigned int s = 10 - ecb_ld32 (m);
1230
1231 m = (m << s) & 0x3ff; /* mask implicit bit */
1232 e -= s - 1;
1233 }
1234 }
1235
1236 /* e and m now are normalised, or zero, (or inf or nan) */
1237 e += 127 - 15;
1238
1239 return s | (e << 23) | (m << (23 - 10));
1240}
1241
1242ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1243ecb_function_ ecb_const uint16_t
1244ecb_binary32_to_binary16 (uint32_t x)
1245{
1246 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1247 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1248 unsigned int m = x & 0x007fffff;
1249
1250 x &= 0x7fffffff;
1251
1252 /* if it's within range of binary16 normals, use fast path */
1253 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1254 {
1255 /* mantissa round-to-even */
1256 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1257
1258 /* handle overflow */
1259 if (ecb_expect_false (m >= 0x00800000))
1260 {
1261 m >>= 1;
1262 e += 1;
1263 }
1264
1265 return s | (e << 10) | (m >> (23 - 10));
1266 }
1267
1268 /* handle large numbers and infinity */
1269 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1270 return s | 0x7c00;
1271
1272 /* handle zero, subnormals and small numbers */
1273 if (ecb_expect_true (x < 0x38800000))
1274 {
1275 /* zero */
1276 if (ecb_expect_true (!x))
1277 return s;
1278
1279 /* handle subnormals */
1280
1281 /* too small, will be zero */
1282 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1283 return s;
1284
1285 m |= 0x00800000; /* make implicit bit explicit */
1286
1287 /* very tricky - we need to round to the nearest e (+10) bit value */
1288 {
1289 unsigned int bits = 14 - e;
1290 unsigned int half = (1 << (bits - 1)) - 1;
1291 unsigned int even = (m >> bits) & 1;
1292
1293 /* if this overflows, we will end up with a normalised number */
1294 m = (m + half + even) >> bits;
1295 }
1296
1297 return s | m;
1298 }
1299
1300 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1301 m >>= 13;
1302
1303 return s | 0x7c00 | m | !m;
1304}
1305
1306/*******************************************************************************/
1307/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1308
1309/* basically, everything uses "ieee pure-endian" floating point numbers */
1310/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1311#if 0 \
1312 || __i386 || __i386__ \
1313 || ECB_GCC_AMD64 \
1314 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1315 || defined __s390__ || defined __s390x__ \
1316 || defined __mips__ \
1317 || defined __alpha__ \
1318 || defined __hppa__ \
1319 || defined __ia64__ \
1320 || defined __m68k__ \
1321 || defined __m88k__ \
1322 || defined __sh__ \
1323 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1324 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1325 || defined __aarch64__
1326 #define ECB_STDFP 1
1327 #include <string.h> /* for memcpy */
1328#else
1329 #define ECB_STDFP 0
1330#endif
1331
1332#ifndef ECB_NO_LIBM
1333
1334 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1335
1336 /* only the oldest of old doesn't have this one. solaris. */
1337 #ifdef INFINITY
1338 #define ECB_INFINITY INFINITY
1339 #else
1340 #define ECB_INFINITY HUGE_VAL
1341 #endif
1342
1343 #ifdef NAN
1344 #define ECB_NAN NAN
1345 #else
1346 #define ECB_NAN ECB_INFINITY
1347 #endif
1348
1349 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1350 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1351 #define ecb_frexpf(x,e) frexpf ((x), (e))
1352 #else
1353 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1354 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1355 #endif
1356
1357 /* convert a float to ieee single/binary32 */
1358 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1359 ecb_function_ ecb_const uint32_t
1360 ecb_float_to_binary32 (float x)
1361 {
1362 uint32_t r;
1363
1364 #if ECB_STDFP
1365 memcpy (&r, &x, 4);
1366 #else
1367 /* slow emulation, works for anything but -0 */
1368 uint32_t m;
1369 int e;
1370
1371 if (x == 0e0f ) return 0x00000000U;
1372 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1373 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1374 if (x != x ) return 0x7fbfffffU;
1375
1376 m = ecb_frexpf (x, &e) * 0x1000000U;
1377
1378 r = m & 0x80000000U;
1379
1380 if (r)
1381 m = -m;
1382
1383 if (e <= -126)
1384 {
1385 m &= 0xffffffU;
1386 m >>= (-125 - e);
1387 e = -126;
1388 }
1389
1390 r |= (e + 126) << 23;
1391 r |= m & 0x7fffffU;
1392 #endif
1393
1394 return r;
1395 }
1396
1397 /* converts an ieee single/binary32 to a float */
1398 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1399 ecb_function_ ecb_const float
1400 ecb_binary32_to_float (uint32_t x)
1401 {
1402 float r;
1403
1404 #if ECB_STDFP
1405 memcpy (&r, &x, 4);
1406 #else
1407 /* emulation, only works for normals and subnormals and +0 */
1408 int neg = x >> 31;
1409 int e = (x >> 23) & 0xffU;
1410
1411 x &= 0x7fffffU;
1412
1413 if (e)
1414 x |= 0x800000U;
1415 else
1416 e = 1;
1417
1418 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1419 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1420
1421 r = neg ? -r : r;
1422 #endif
1423
1424 return r;
1425 }
1426
1427 /* convert a double to ieee double/binary64 */
1428 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1429 ecb_function_ ecb_const uint64_t
1430 ecb_double_to_binary64 (double x)
1431 {
1432 uint64_t r;
1433
1434 #if ECB_STDFP
1435 memcpy (&r, &x, 8);
1436 #else
1437 /* slow emulation, works for anything but -0 */
1438 uint64_t m;
1439 int e;
1440
1441 if (x == 0e0 ) return 0x0000000000000000U;
1442 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1443 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1444 if (x != x ) return 0X7ff7ffffffffffffU;
1445
1446 m = frexp (x, &e) * 0x20000000000000U;
1447
1448 r = m & 0x8000000000000000;;
1449
1450 if (r)
1451 m = -m;
1452
1453 if (e <= -1022)
1454 {
1455 m &= 0x1fffffffffffffU;
1456 m >>= (-1021 - e);
1457 e = -1022;
1458 }
1459
1460 r |= ((uint64_t)(e + 1022)) << 52;
1461 r |= m & 0xfffffffffffffU;
1462 #endif
1463
1464 return r;
1465 }
1466
1467 /* converts an ieee double/binary64 to a double */
1468 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1469 ecb_function_ ecb_const double
1470 ecb_binary64_to_double (uint64_t x)
1471 {
1472 double r;
1473
1474 #if ECB_STDFP
1475 memcpy (&r, &x, 8);
1476 #else
1477 /* emulation, only works for normals and subnormals and +0 */
1478 int neg = x >> 63;
1479 int e = (x >> 52) & 0x7ffU;
1480
1481 x &= 0xfffffffffffffU;
1482
1483 if (e)
1484 x |= 0x10000000000000U;
1485 else
1486 e = 1;
1487
1488 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1489 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1490
1491 r = neg ? -r : r;
1492 #endif
1493
1494 return r;
1495 }
1496
1497 /* convert a float to ieee half/binary16 */
1498 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1499 ecb_function_ ecb_const uint16_t
1500 ecb_float_to_binary16 (float x)
1501 {
1502 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1503 }
1504
1505 /* convert an ieee half/binary16 to float */
1506 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1507 ecb_function_ ecb_const float
1508 ecb_binary16_to_float (uint16_t x)
1509 {
1510 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1511 }
1512
1513#endif
1514
912#endif 1515#endif
913 1516
914/* ECB.H END */ 1517/* ECB.H END */
915 1518
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
937#define inline_size ecb_inline 1540#define inline_size ecb_inline
938 1541
939#if EV_FEATURE_CODE 1542#if EV_FEATURE_CODE
940# define inline_speed ecb_inline 1543# define inline_speed ecb_inline
941#else 1544#else
942# define inline_speed static noinline 1545# define inline_speed noinline static
943#endif 1546#endif
944 1547
945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
946 1549
947#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
948# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
949#else 1552#else
950# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
951#endif 1554#endif
952 1555
953#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
954#define EMPTY2(a,b) /* used to suppress some warnings */
955 1557
956typedef ev_watcher *W; 1558typedef ev_watcher *W;
957typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
958typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
959 1561
… …
994#else 1596#else
995 1597
996#include <float.h> 1598#include <float.h>
997 1599
998/* a floor() replacement function, should be independent of ev_tstamp type */ 1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
999static ev_tstamp noinline 1602static ev_tstamp
1000ev_floor (ev_tstamp v) 1603ev_floor (ev_tstamp v)
1001{ 1604{
1002 /* the choice of shift factor is not terribly important */ 1605 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1036 1639
1037#ifdef __linux 1640#ifdef __linux
1038# include <sys/utsname.h> 1641# include <sys/utsname.h>
1039#endif 1642#endif
1040 1643
1041static unsigned int noinline ecb_cold 1644noinline ecb_cold
1645static unsigned int
1042ev_linux_version (void) 1646ev_linux_version (void)
1043{ 1647{
1044#ifdef __linux 1648#ifdef __linux
1045 unsigned int v = 0; 1649 unsigned int v = 0;
1046 struct utsname buf; 1650 struct utsname buf;
… …
1075} 1679}
1076 1680
1077/*****************************************************************************/ 1681/*****************************************************************************/
1078 1682
1079#if EV_AVOID_STDIO 1683#if EV_AVOID_STDIO
1080static void noinline ecb_cold 1684noinline ecb_cold
1685static void
1081ev_printerr (const char *msg) 1686ev_printerr (const char *msg)
1082{ 1687{
1083 write (STDERR_FILENO, msg, strlen (msg)); 1688 write (STDERR_FILENO, msg, strlen (msg));
1084} 1689}
1085#endif 1690#endif
1086 1691
1087static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1088 1693
1089void ecb_cold 1694ecb_cold
1695void
1090ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1091{ 1697{
1092 syserr_cb = cb; 1698 syserr_cb = cb;
1093} 1699}
1094 1700
1095static void noinline ecb_cold 1701noinline ecb_cold
1702static void
1096ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
1097{ 1704{
1098 if (!msg) 1705 if (!msg)
1099 msg = "(libev) system error"; 1706 msg = "(libev) system error";
1100 1707
… …
1113 abort (); 1720 abort ();
1114 } 1721 }
1115} 1722}
1116 1723
1117static void * 1724static void *
1118ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1119{ 1726{
1120#if __GLIBC__
1121 return realloc (ptr, size);
1122#else
1123 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
1124 * implement realloc (x, 0) (as required by both ansi c-89 and 1728 * implement realloc (x, 0) (as required by both ansi c-89 and
1125 * the single unix specification, so work around them here. 1729 * the single unix specification, so work around them here.
1730 * recently, also (at least) fedora and debian started breaking it,
1731 * despite documenting it otherwise.
1126 */ 1732 */
1127 1733
1128 if (size) 1734 if (size)
1129 return realloc (ptr, size); 1735 return realloc (ptr, size);
1130 1736
1131 free (ptr); 1737 free (ptr);
1132 return 0; 1738 return 0;
1133#endif
1134} 1739}
1135 1740
1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1137 1742
1138void ecb_cold 1743ecb_cold
1744void
1139ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1140{ 1746{
1141 alloc = cb; 1747 alloc = cb;
1142} 1748}
1143 1749
1144inline_speed void * 1750inline_speed void *
… …
1171typedef struct 1777typedef struct
1172{ 1778{
1173 WL head; 1779 WL head;
1174 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
1175 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1781 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1782 unsigned char emask; /* some backends store the actual kernel mask in here */
1177 unsigned char unused; 1783 unsigned char unused;
1178#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
1179 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
1180#endif 1786#endif
1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1261 1867
1262/*****************************************************************************/ 1868/*****************************************************************************/
1263 1869
1264#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
1265ev_tstamp 1871ev_tstamp
1266ev_time (void) 1872ev_time (void) EV_NOEXCEPT
1267{ 1873{
1268#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
1269 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
1270 { 1876 {
1271 struct timespec ts; 1877 struct timespec ts;
… …
1295 return ev_time (); 1901 return ev_time ();
1296} 1902}
1297 1903
1298#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1299ev_tstamp 1905ev_tstamp
1300ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
1301{ 1907{
1302 return ev_rt_now; 1908 return ev_rt_now;
1303} 1909}
1304#endif 1910#endif
1305 1911
1306void 1912void
1307ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1308{ 1914{
1309 if (delay > 0.) 1915 if (delay > 0.)
1310 { 1916 {
1311#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
1312 struct timespec ts; 1918 struct timespec ts;
1313 1919
1314 EV_TS_SET (ts, delay); 1920 EV_TS_SET (ts, delay);
1315 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
1316#elif defined(_WIN32) 1922#elif defined _WIN32
1923 /* maybe this should round up, as ms is very low resolution */
1924 /* compared to select (µs) or nanosleep (ns) */
1317 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
1318#else 1926#else
1319 struct timeval tv; 1927 struct timeval tv;
1320 1928
1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1929 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1352 } 1960 }
1353 1961
1354 return ncur; 1962 return ncur;
1355} 1963}
1356 1964
1357static void * noinline ecb_cold 1965noinline ecb_cold
1966static void *
1358array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
1359{ 1968{
1360 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
1361 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
1362} 1971}
1363 1972
1973#define array_needsize_noinit(base,count)
1974
1364#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
1365 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1366 1977
1367#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
1368 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
1369 { \ 1980 { \
1370 int ecb_unused ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
1371 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
1372 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
1373 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
1374 } 1985 }
1375 1986
… …
1387 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1998 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1388 1999
1389/*****************************************************************************/ 2000/*****************************************************************************/
1390 2001
1391/* dummy callback for pending events */ 2002/* dummy callback for pending events */
1392static void noinline 2003noinline
2004static void
1393pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
1394{ 2006{
1395} 2007}
1396 2008
1397void noinline 2009noinline
2010void
1398ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1399{ 2012{
1400 W w_ = (W)w; 2013 W w_ = (W)w;
1401 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
1402 2015
1403 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
1404 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
1405 else 2018 else
1406 { 2019 {
1407 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
1408 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1409 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
1410 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
1411 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
1412} 2027}
1413 2028
1414inline_speed void 2029inline_speed void
1415feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
1416{ 2031{
1417 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1418 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
1419} 2034}
1420 2035
1421inline_size void 2036inline_size void
1422feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
1462 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
1463 fd_event_nocheck (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
1464} 2079}
1465 2080
1466void 2081void
1467ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1468{ 2083{
1469 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
1470 fd_event_nocheck (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
1471} 2086}
1472 2087
… …
1530 2145
1531 fdchangecnt = 0; 2146 fdchangecnt = 0;
1532} 2147}
1533 2148
1534/* something about the given fd changed */ 2149/* something about the given fd changed */
1535inline_size void 2150inline_size
2151void
1536fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
1537{ 2153{
1538 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
1539 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
1540 2156
1541 if (expect_true (!reify)) 2157 if (expect_true (!reify))
1542 { 2158 {
1543 ++fdchangecnt; 2159 ++fdchangecnt;
1544 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1545 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
1546 } 2162 }
1547} 2163}
1548 2164
1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2165/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1550inline_speed void ecb_cold 2166inline_speed ecb_cold void
1551fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
1552{ 2168{
1553 ev_io *w; 2169 ev_io *w;
1554 2170
1555 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2174 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1559 } 2175 }
1560} 2176}
1561 2177
1562/* check whether the given fd is actually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
1563inline_size int ecb_cold 2179inline_size ecb_cold int
1564fd_valid (int fd) 2180fd_valid (int fd)
1565{ 2181{
1566#ifdef _WIN32 2182#ifdef _WIN32
1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1568#else 2184#else
1569 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
1570#endif 2186#endif
1571} 2187}
1572 2188
1573/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
1574static void noinline ecb_cold 2190noinline ecb_cold
2191static void
1575fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
1576{ 2193{
1577 int fd; 2194 int fd;
1578 2195
1579 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
1581 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
1582 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
1583} 2200}
1584 2201
1585/* called on ENOMEM in select/poll to kill some fds and retry */ 2202/* called on ENOMEM in select/poll to kill some fds and retry */
1586static void noinline ecb_cold 2203noinline ecb_cold
2204static void
1587fd_enomem (EV_P) 2205fd_enomem (EV_P)
1588{ 2206{
1589 int fd; 2207 int fd;
1590 2208
1591 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1595 break; 2213 break;
1596 } 2214 }
1597} 2215}
1598 2216
1599/* usually called after fork if backend needs to re-arm all fds from scratch */ 2217/* usually called after fork if backend needs to re-arm all fds from scratch */
1600static void noinline 2218noinline
2219static void
1601fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1602{ 2221{
1603 int fd; 2222 int fd;
1604 2223
1605 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1786 2405
1787/*****************************************************************************/ 2406/*****************************************************************************/
1788 2407
1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1790 2409
1791static void noinline ecb_cold 2410noinline ecb_cold
2411static void
1792evpipe_init (EV_P) 2412evpipe_init (EV_P)
1793{ 2413{
1794 if (!ev_is_active (&pipe_w)) 2414 if (!ev_is_active (&pipe_w))
1795 { 2415 {
2416 int fds [2];
2417
1796# if EV_USE_EVENTFD 2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
1797 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1798 if (evfd < 0 && errno == EINVAL) 2421 if (fds [1] < 0 && errno == EINVAL)
1799 evfd = eventfd (0, 0); 2422 fds [1] = eventfd (0, 0);
1800 2423
1801 if (evfd >= 0) 2424 if (fds [1] < 0)
2425# endif
1802 { 2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
1803 evpipe [0] = -1; 2433 evpipe [0] = fds [0];
1804 fd_intern (evfd); /* doing it twice doesn't hurt */ 2434
1805 ev_io_set (&pipe_w, evfd, EV_READ); 2435 if (evpipe [1] < 0)
2436 evpipe [1] = fds [1]; /* first call, set write fd */
2437 else
2438 {
2439 /* on subsequent calls, do not change evpipe [1] */
2440 /* so that evpipe_write can always rely on its value. */
2441 /* this branch does not do anything sensible on windows, */
2442 /* so must not be executed on windows */
2443
2444 dup2 (fds [1], evpipe [1]);
2445 close (fds [1]);
2446 }
2447
2448 fd_intern (evpipe [1]);
2449
2450 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2451 ev_io_start (EV_A_ &pipe_w);
2452 ev_unref (EV_A); /* watcher should not keep loop alive */
2453 }
2454}
2455
2456inline_speed void
2457evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2458{
2459 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2460
2461 if (expect_true (*flag))
2462 return;
2463
2464 *flag = 1;
2465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2466
2467 pipe_write_skipped = 1;
2468
2469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2470
2471 if (pipe_write_wanted)
2472 {
2473 int old_errno;
2474
2475 pipe_write_skipped = 0;
2476 ECB_MEMORY_FENCE_RELEASE;
2477
2478 old_errno = errno; /* save errno because write will clobber it */
2479
2480#if EV_USE_EVENTFD
2481 if (evpipe [0] < 0)
2482 {
2483 uint64_t counter = 1;
2484 write (evpipe [1], &counter, sizeof (uint64_t));
1806 } 2485 }
1807 else 2486 else
1808# endif 2487#endif
1809 { 2488 {
1810 while (pipe (evpipe)) 2489#ifdef _WIN32
1811 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1812 2491 DWORD sent;
1813 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1814 fd_intern (evpipe [1]); 2493 buf.len = 1;
1815 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1816 } 2495#else
1817
1818 ev_io_start (EV_A_ &pipe_w);
1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1820 }
1821}
1822
1823inline_speed void
1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1825{
1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1843 old_errno = errno; /* save errno because write will clobber it */
1844
1845#if EV_USE_EVENTFD
1846 if (evfd >= 0)
1847 {
1848 uint64_t counter = 1;
1849 write (evfd, &counter, sizeof (uint64_t));
1850 }
1851 else
1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1859 write (evpipe [1], &(evpipe [1]), 1); 2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1860 } 2498 }
1861 2499
1862 errno = old_errno; 2500 errno = old_errno;
1863 } 2501 }
1864} 2502}
… …
1871 int i; 2509 int i;
1872 2510
1873 if (revents & EV_READ) 2511 if (revents & EV_READ)
1874 { 2512 {
1875#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1876 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1877 { 2515 {
1878 uint64_t counter; 2516 uint64_t counter;
1879 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1880 } 2518 }
1881 else 2519 else
1882#endif 2520#endif
1883 { 2521 {
1884 char dummy; 2522 char dummy[4];
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2523#ifdef _WIN32
2524 WSABUF buf;
2525 DWORD recvd;
2526 DWORD flags = 0;
2527 buf.buf = dummy;
2528 buf.len = sizeof (dummy);
2529 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2530#else
1886 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
1887 } 2533 }
1888 } 2534 }
1889 2535
1890 pipe_write_skipped = 0; 2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1891 2539
1892#if EV_SIGNAL_ENABLE 2540#if EV_SIGNAL_ENABLE
1893 if (sig_pending) 2541 if (sig_pending)
1894 { 2542 {
1895 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1896 2546
1897 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1898 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1899 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1900 } 2550 }
… …
1902 2552
1903#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1904 if (async_pending) 2554 if (async_pending)
1905 { 2555 {
1906 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1907 2559
1908 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1909 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1910 { 2562 {
1911 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1912 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1913 } 2566 }
1914 } 2567 }
1915#endif 2568#endif
1916} 2569}
1917 2570
1918/*****************************************************************************/ 2571/*****************************************************************************/
1919 2572
1920void 2573void
1921ev_feed_signal (int signum) 2574ev_feed_signal (int signum) EV_NOEXCEPT
1922{ 2575{
1923#if EV_MULTIPLICITY 2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
1924 EV_P = signals [signum - 1].loop; 2579 EV_A = signals [signum - 1].loop;
1925 2580
1926 if (!EV_A) 2581 if (!EV_A)
1927 return; 2582 return;
1928#endif 2583#endif
1929 2584
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1; 2585 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending); 2586 evpipe_write (EV_A_ &sig_pending);
1935} 2587}
1936 2588
1937static void 2589static void
… …
1942#endif 2594#endif
1943 2595
1944 ev_feed_signal (signum); 2596 ev_feed_signal (signum);
1945} 2597}
1946 2598
1947void noinline 2599noinline
2600void
1948ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1949{ 2602{
1950 WL w; 2603 WL w;
1951 2604
1952 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1953 return; 2606 return;
1954 2607
1955 --signum; 2608 --signum;
1956 2609
1957#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1961 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1962 return; 2615 return;
1963#endif 2616#endif
1964 2617
1965 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1966 2620
1967 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1968 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1969} 2623}
1970 2624
… …
2058# include "ev_port.c" 2712# include "ev_port.c"
2059#endif 2713#endif
2060#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
2061# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
2062#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
2063#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
2064# include "ev_epoll.c" 2721# include "ev_epoll.c"
2065#endif 2722#endif
2066#if EV_USE_POLL 2723#if EV_USE_POLL
2067# include "ev_poll.c" 2724# include "ev_poll.c"
2068#endif 2725#endif
2069#if EV_USE_SELECT 2726#if EV_USE_SELECT
2070# include "ev_select.c" 2727# include "ev_select.c"
2071#endif 2728#endif
2072 2729
2073int ecb_cold 2730ecb_cold int
2074ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
2075{ 2732{
2076 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
2077} 2734}
2078 2735
2079int ecb_cold 2736ecb_cold int
2080ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
2081{ 2738{
2082 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
2083} 2740}
2084 2741
2085/* return true if we are running with elevated privileges and should ignore env variables */ 2742/* return true if we are running with elevated privileges and should ignore env variables */
2086int inline_size ecb_cold 2743inline_size ecb_cold int
2087enable_secure (void) 2744enable_secure (void)
2088{ 2745{
2089#ifdef _WIN32 2746#ifdef _WIN32
2090 return 0; 2747 return 0;
2091#else 2748#else
2092 return getuid () != geteuid () 2749 return getuid () != geteuid ()
2093 || getgid () != getegid (); 2750 || getgid () != getegid ();
2094#endif 2751#endif
2095} 2752}
2096 2753
2097unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2098ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
2099{ 2757{
2100 unsigned int flags = 0; 2758 unsigned int flags = 0;
2101 2759
2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2103 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2104 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2105 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2107 2766
2108 return flags; 2767 return flags;
2109} 2768}
2110 2769
2111unsigned int ecb_cold 2770ecb_cold
2771unsigned int
2112ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
2113{ 2773{
2114 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
2115 2775
2116#ifndef __NetBSD__ 2776#ifndef __NetBSD__
2117 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
2128#endif 2788#endif
2129 2789
2130 return flags; 2790 return flags;
2131} 2791}
2132 2792
2133unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2134ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
2135{ 2796{
2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2137 2798
2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2799 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2800 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2141 2802
2142 return flags; 2803 return flags;
2143} 2804}
2144 2805
2145unsigned int 2806unsigned int
2146ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
2147{ 2808{
2148 return backend; 2809 return backend;
2149} 2810}
2150 2811
2151#if EV_FEATURE_API 2812#if EV_FEATURE_API
2152unsigned int 2813unsigned int
2153ev_iteration (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
2154{ 2815{
2155 return loop_count; 2816 return loop_count;
2156} 2817}
2157 2818
2158unsigned int 2819unsigned int
2159ev_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
2160{ 2821{
2161 return loop_depth; 2822 return loop_depth;
2162} 2823}
2163 2824
2164void 2825void
2165ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2166{ 2827{
2167 io_blocktime = interval; 2828 io_blocktime = interval;
2168} 2829}
2169 2830
2170void 2831void
2171ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2172{ 2833{
2173 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
2174} 2835}
2175 2836
2176void 2837void
2177ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2178{ 2839{
2179 userdata = data; 2840 userdata = data;
2180} 2841}
2181 2842
2182void * 2843void *
2183ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
2184{ 2845{
2185 return userdata; 2846 return userdata;
2186} 2847}
2187 2848
2188void 2849void
2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2850ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2190{ 2851{
2191 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
2192} 2853}
2193 2854
2194void 2855void
2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2856ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2196{ 2857{
2197 release_cb = release; 2858 release_cb = release;
2198 acquire_cb = acquire; 2859 acquire_cb = acquire;
2199} 2860}
2200#endif 2861#endif
2201 2862
2202/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
2203static void noinline ecb_cold 2864noinline ecb_cold
2865static void
2204loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2205{ 2867{
2206 if (!backend) 2868 if (!backend)
2207 { 2869 {
2208 origflags = flags; 2870 origflags = flags;
2209 2871
… …
2254#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
2255 async_pending = 0; 2917 async_pending = 0;
2256#endif 2918#endif
2257 pipe_write_skipped = 0; 2919 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0; 2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
2259#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2261#endif 2925#endif
2262#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2265 2929
2266 if (!(flags & EVBACKEND_MASK)) 2930 if (!(flags & EVBACKEND_MASK))
2267 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
2268 2932
2269#if EV_USE_IOCP 2933#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif 2935#endif
2272#if EV_USE_PORT 2936#if EV_USE_PORT
2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2274#endif 2938#endif
2275#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2940 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2941#endif
2942#if EV_USE_LINUXAIO
2943 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2277#endif 2944#endif
2278#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
2279 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2280#endif 2947#endif
2281#if EV_USE_POLL 2948#if EV_USE_POLL
2282 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2283#endif 2950#endif
2284#if EV_USE_SELECT 2951#if EV_USE_SELECT
2285 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2286#endif 2953#endif
2287 2954
2288 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
2289 2956
2290#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2293#endif 2960#endif
2294 } 2961 }
2295} 2962}
2296 2963
2297/* free up a loop structure */ 2964/* free up a loop structure */
2298void ecb_cold 2965ecb_cold
2966void
2299ev_loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
2300{ 2968{
2301 int i; 2969 int i;
2302 2970
2303#if EV_MULTIPLICITY 2971#if EV_MULTIPLICITY
… …
2314 EV_INVOKE_PENDING; 2982 EV_INVOKE_PENDING;
2315 } 2983 }
2316#endif 2984#endif
2317 2985
2318#if EV_CHILD_ENABLE 2986#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev)) 2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2320 { 2988 {
2321 ev_ref (EV_A); /* child watcher */ 2989 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev); 2990 ev_signal_stop (EV_A_ &childev);
2323 } 2991 }
2324#endif 2992#endif
… …
2326 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
2327 { 2995 {
2328 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
2329 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
2330 2998
2331#if EV_USE_EVENTFD
2332 if (evfd >= 0)
2333 close (evfd);
2334#endif
2335
2336 if (evpipe [0] >= 0)
2337 {
2338 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2339 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2340 }
2341 } 3001 }
2342 3002
2343#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
2344 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
2345 close (sigfd); 3005 close (sigfd);
… …
2352 3012
2353 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
2354 close (backend_fd); 3014 close (backend_fd);
2355 3015
2356#if EV_USE_IOCP 3016#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif 3018#endif
2359#if EV_USE_PORT 3019#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2361#endif 3021#endif
2362#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3023 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3024#endif
3025#if EV_USE_LINUXAIO
3026 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2364#endif 3027#endif
2365#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2367#endif 3030#endif
2368#if EV_USE_POLL 3031#if EV_USE_POLL
2369 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2370#endif 3033#endif
2371#if EV_USE_SELECT 3034#if EV_USE_SELECT
2372 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2373#endif 3036#endif
2374 3037
2375 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
2376 { 3039 {
2377 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
2419 3082
2420inline_size void 3083inline_size void
2421loop_fork (EV_P) 3084loop_fork (EV_P)
2422{ 3085{
2423#if EV_USE_PORT 3086#if EV_USE_PORT
2424 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2425#endif 3088#endif
2426#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
2427 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3090 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3091#endif
3092#if EV_USE_LINUXAIO
3093 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2428#endif 3094#endif
2429#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
2430 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2431#endif 3097#endif
2432#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
2433 infy_fork (EV_A); 3099 infy_fork (EV_A);
2434#endif 3100#endif
2435 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2436 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
2437 { 3104 {
2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3105 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2439 3106
2440 ev_ref (EV_A); 3107 ev_ref (EV_A);
2441 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
2442 3109
2443#if EV_USE_EVENTFD
2444 if (evfd >= 0)
2445 close (evfd);
2446#endif
2447
2448 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
2449 {
2450 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
2451 EV_WIN32_CLOSE_FD (evpipe [1]);
2452 }
2453 3112
2454#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2455 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
2456 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
2457 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2458#endif
2459 } 3116 }
3117#endif
2460 3118
2461 postfork = 0; 3119 postfork = 0;
2462} 3120}
2463 3121
2464#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2465 3123
3124ecb_cold
2466struct ev_loop * ecb_cold 3125struct ev_loop *
2467ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
2468{ 3127{
2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2470 3129
2471 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
2472 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
… …
2479} 3138}
2480 3139
2481#endif /* multiplicity */ 3140#endif /* multiplicity */
2482 3141
2483#if EV_VERIFY 3142#if EV_VERIFY
2484static void noinline ecb_cold 3143noinline ecb_cold
3144static void
2485verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
2486{ 3146{
2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3147 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2488 3148
2489 if (w->pending) 3149 if (w->pending)
2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3150 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2491} 3151}
2492 3152
2493static void noinline ecb_cold 3153noinline ecb_cold
3154static void
2494verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
2495{ 3156{
2496 int i; 3157 int i;
2497 3158
2498 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2503 3164
2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2505 } 3166 }
2506} 3167}
2507 3168
2508static void noinline ecb_cold 3169noinline ecb_cold
3170static void
2509array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
2510{ 3172{
2511 while (cnt--) 3173 while (cnt--)
2512 { 3174 {
2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2516} 3178}
2517#endif 3179#endif
2518 3180
2519#if EV_FEATURE_API 3181#if EV_FEATURE_API
2520void ecb_cold 3182void ecb_cold
2521ev_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
2522{ 3184{
2523#if EV_VERIFY 3185#if EV_VERIFY
2524 int i; 3186 int i;
2525 WL w; 3187 WL w, w2;
2526 3188
2527 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
2528 3190
2529 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
2530 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
2531 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2532 3194
2533 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
2534 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
2535 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
2536 { 3201 {
2537 verify_watcher (EV_A_ (W)w); 3202 verify_watcher (EV_A_ (W)w);
3203
3204 if (j++ & 1)
3205 {
3206 assert (("libev: io watcher list contains a loop", w != w2));
3207 w2 = w2->next;
3208 }
3209
2538 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3210 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2539 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3211 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2540 } 3212 }
3213 }
2541 3214
2542 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
2543 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
2544 3217
2545#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
2591#endif 3264#endif
2592} 3265}
2593#endif 3266#endif
2594 3267
2595#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
2596struct ev_loop * ecb_cold 3270struct ev_loop *
2597#else 3271#else
2598int 3272int
2599#endif 3273#endif
2600ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
2601{ 3275{
2602 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
2603 { 3277 {
2604#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
2605 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2624 3298
2625 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
2626} 3300}
2627 3301
2628void 3302void
2629ev_loop_fork (EV_P) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
2630{ 3304{
2631 postfork = 1; /* must be in line with ev_default_fork */ 3305 postfork = 1;
2632} 3306}
2633 3307
2634/*****************************************************************************/ 3308/*****************************************************************************/
2635 3309
2636void 3310void
… …
2638{ 3312{
2639 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
2640} 3314}
2641 3315
2642unsigned int 3316unsigned int
2643ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
2644{ 3318{
2645 int pri; 3319 int pri;
2646 unsigned int count = 0; 3320 unsigned int count = 0;
2647 3321
2648 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
2649 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
2650 3324
2651 return count; 3325 return count;
2652} 3326}
2653 3327
2654void noinline 3328noinline
3329void
2655ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
2656{ 3331{
2657 int pri; 3332 pendingpri = NUMPRI;
2658 3333
2659 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
2660 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
2661 { 3340 {
2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2663 3342
2664 p->w->pending = 0; 3343 p->w->pending = 0;
2665 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2666 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2667 } 3346 }
3347 }
3348 while (pendingpri);
2668} 3349}
2669 3350
2670#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2671/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2672/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2730 } 3411 }
2731} 3412}
2732 3413
2733#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
2734 3415
2735static void noinline 3416noinline
3417static void
2736periodic_recalc (EV_P_ ev_periodic *w) 3418periodic_recalc (EV_P_ ev_periodic *w)
2737{ 3419{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3421 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740 3422
… …
2762{ 3444{
2763 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2764 3446
2765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2766 { 3448 {
2767 int feed_count = 0;
2768
2769 do 3449 do
2770 { 3450 {
2771 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2772 3452
2773 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3453 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2800 } 3480 }
2801} 3481}
2802 3482
2803/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2804/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3484/* TODO: maybe ensure that at least one event happens when jumping forward? */
2805static void noinline ecb_cold 3485noinline ecb_cold
3486static void
2806periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2807{ 3488{
2808 int i; 3489 int i;
2809 3490
2810 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2823 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2824} 3505}
2825#endif 3506#endif
2826 3507
2827/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2828static void noinline ecb_cold 3509noinline ecb_cold
3510static void
2829timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2830{ 3512{
2831 int i; 3513 int i;
2832 3514
2833 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2907 3589
2908 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2909 } 3591 }
2910} 3592}
2911 3593
2912void 3594int
2913ev_run (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2914{ 3596{
2915#if EV_FEATURE_API 3597#if EV_FEATURE_API
2916 ++loop_depth; 3598 ++loop_depth;
2917#endif 3599#endif
… …
3032 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034 3716
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036 3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3037 if (pipe_write_skipped) 3720 if (pipe_write_skipped)
3038 { 3721 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3722 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 } 3724 }
… …
3074 loop_done = EVBREAK_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
3075 3758
3076#if EV_FEATURE_API 3759#if EV_FEATURE_API
3077 --loop_depth; 3760 --loop_depth;
3078#endif 3761#endif
3079}
3080 3762
3763 return activecnt;
3764}
3765
3081void 3766void
3082ev_break (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
3083{ 3768{
3084 loop_done = how; 3769 loop_done = how;
3085} 3770}
3086 3771
3087void 3772void
3088ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
3089{ 3774{
3090 ++activecnt; 3775 ++activecnt;
3091} 3776}
3092 3777
3093void 3778void
3094ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
3095{ 3780{
3096 --activecnt; 3781 --activecnt;
3097} 3782}
3098 3783
3099void 3784void
3100ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
3101{ 3786{
3102 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
3103} 3788}
3104 3789
3105void 3790void
3106ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
3107{ 3792{
3108 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
3109} 3794}
3110 3795
3111void 3796void
3112ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
3113{ 3798{
3114 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
3115 3800
3116 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
3117 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3156 w->pending = 0; 3841 w->pending = 0;
3157 } 3842 }
3158} 3843}
3159 3844
3160int 3845int
3161ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3162{ 3847{
3163 W w_ = (W)w; 3848 W w_ = (W)w;
3164 int pending = w_->pending; 3849 int pending = w_->pending;
3165 3850
3166 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
3198 w->active = 0; 3883 w->active = 0;
3199} 3884}
3200 3885
3201/*****************************************************************************/ 3886/*****************************************************************************/
3202 3887
3203void noinline 3888noinline
3889void
3204ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3205{ 3891{
3206 int fd = w->fd; 3892 int fd = w->fd;
3207 3893
3208 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
3209 return; 3895 return;
… …
3212 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3898 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3213 3899
3214 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
3215 3901
3216 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
3217 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3218 wlist_add (&anfds[fd].head, (WL)w); 3904 wlist_add (&anfds[fd].head, (WL)w);
3905
3906 /* common bug, apparently */
3907 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3219 3908
3220 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3909 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3221 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
3222 3911
3223 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
3224} 3913}
3225 3914
3226void noinline 3915noinline
3916void
3227ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 3918{
3229 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
3230 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
3231 return; 3921 return;
3232 3922
… …
3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3241 3931
3242 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3243} 3933}
3244 3934
3245void noinline 3935noinline
3936void
3246ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3247{ 3938{
3248 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
3249 return; 3940 return;
3250 3941
3251 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
3254 3945
3255 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
3256 3947
3257 ++timercnt; 3948 ++timercnt;
3258 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3259 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3260 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
3261 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
3262 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
3263 3954
3264 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
3265 3956
3266 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3957 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3267} 3958}
3268 3959
3269void noinline 3960noinline
3961void
3270ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3271{ 3963{
3272 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
3273 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
3274 return; 3966 return;
3275 3967
… …
3294 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
3295 3987
3296 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3297} 3989}
3298 3990
3299void noinline 3991noinline
3992void
3300ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3301{ 3994{
3302 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3996
3997 clear_pending (EV_A_ (W)w);
3303 3998
3304 if (ev_is_active (w)) 3999 if (ev_is_active (w))
3305 { 4000 {
3306 if (w->repeat) 4001 if (w->repeat)
3307 { 4002 {
… …
3320 4015
3321 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
3322} 4017}
3323 4018
3324ev_tstamp 4019ev_tstamp
3325ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3326{ 4021{
3327 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3328} 4023}
3329 4024
3330#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
3331void noinline 4026noinline
4027void
3332ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3333{ 4029{
3334 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3335 return; 4031 return;
3336 4032
3337 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
… …
3346 4042
3347 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
3348 4044
3349 ++periodiccnt; 4045 ++periodiccnt;
3350 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3351 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3352 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3353 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
3354 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
3355 4051
3356 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3357 4053
3358 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4054 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3359} 4055}
3360 4056
3361void noinline 4057noinline
4058void
3362ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3363{ 4060{
3364 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
3366 return; 4063 return;
3367 4064
… …
3384 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
3385 4082
3386 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
3387} 4084}
3388 4085
3389void noinline 4086noinline
4087void
3390ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3391{ 4089{
3392 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
3393 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
3394 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
3395} 4093}
… …
3399# define SA_RESTART 0 4097# define SA_RESTART 0
3400#endif 4098#endif
3401 4099
3402#if EV_SIGNAL_ENABLE 4100#if EV_SIGNAL_ENABLE
3403 4101
3404void noinline 4102noinline
4103void
3405ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3406{ 4105{
3407 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
3408 return; 4107 return;
3409 4108
3410 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4109 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3412#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
3413 assert (("libev: a signal must not be attached to two different loops", 4112 assert (("libev: a signal must not be attached to two different loops",
3414 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3415 4114
3416 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
3417#endif 4117#endif
3418 4118
3419 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3420 4120
3421#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
3480 } 4180 }
3481 4181
3482 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
3483} 4183}
3484 4184
3485void noinline 4185noinline
4186void
3486ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3487{ 4188{
3488 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
3489 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
3490 return; 4191 return;
3491 4192
… …
3522#endif 4223#endif
3523 4224
3524#if EV_CHILD_ENABLE 4225#if EV_CHILD_ENABLE
3525 4226
3526void 4227void
3527ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3528{ 4229{
3529#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
3530 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4231 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3531#endif 4232#endif
3532 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
… …
3539 4240
3540 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
3541} 4242}
3542 4243
3543void 4244void
3544ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3545{ 4246{
3546 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
3547 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
3548 return; 4249 return;
3549 4250
… …
3566 4267
3567#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
3568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3569#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
3570 4271
3571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4272noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3572 4273
3573#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
3574 4275
3575/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4276/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3576# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3577 4278
3578static void noinline 4279noinline
4280static void
3579infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
3580{ 4282{
3581 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); 4283 w->wd = inotify_add_watch (fs_fd, w->path,
4284 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4285 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4286 | IN_DONT_FOLLOW | IN_MASK_ADD);
3582 4287
3583 if (w->wd >= 0) 4288 if (w->wd >= 0)
3584 { 4289 {
3585 struct statfs sfs; 4290 struct statfs sfs;
3586 4291
… …
3590 4295
3591 if (!fs_2625) 4296 if (!fs_2625)
3592 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3593 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
3594 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
3595 || sfs.f_type == 0xEF53 /* ext2/3 */ 4302 || sfs.f_type == 0xEF53 /* ext2/3 */
4303 || sfs.f_type == 0x72b6 /* jffs2 */
4304 || sfs.f_type == 0x858458f6 /* ramfs */
4305 || sfs.f_type == 0x5346544e /* ntfs */
3596 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
3597 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
3598 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
3599 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
3600 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3601 else 4312 else
3602 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4313 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3603 } 4314 }
… …
3638 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3639 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
3640 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3641} 4352}
3642 4353
3643static void noinline 4354noinline
4355static void
3644infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
3645{ 4357{
3646 int slot; 4358 int slot;
3647 int wd = w->wd; 4359 int wd = w->wd;
3648 4360
… …
3655 4367
3656 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
3657 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
3658} 4370}
3659 4371
3660static void noinline 4372noinline
4373static void
3661infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3662{ 4375{
3663 if (slot < 0) 4376 if (slot < 0)
3664 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
3665 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3702 ofs += sizeof (struct inotify_event) + ev->len; 4415 ofs += sizeof (struct inotify_event) + ev->len;
3703 } 4416 }
3704} 4417}
3705 4418
3706inline_size void ecb_cold 4419inline_size ecb_cold
4420void
3707ev_check_2625 (EV_P) 4421ev_check_2625 (EV_P)
3708{ 4422{
3709 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4424 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3711 */ 4425 */
… …
3716} 4430}
3717 4431
3718inline_size int 4432inline_size int
3719infy_newfd (void) 4433infy_newfd (void)
3720{ 4434{
3721#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3722 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3723 if (fd >= 0) 4437 if (fd >= 0)
3724 return fd; 4438 return fd;
3725#endif 4439#endif
3726 return inotify_init (); 4440 return inotify_init ();
… …
3801#else 4515#else
3802# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3803#endif 4517#endif
3804 4518
3805void 4519void
3806ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3807{ 4521{
3808 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3809 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3810 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3811 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3812} 4526}
3813 4527
3814static void noinline 4528noinline
4529static void
3815stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3816{ 4531{
3817 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3818 4533
3819 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3850 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3851 } 4566 }
3852} 4567}
3853 4568
3854void 4569void
3855ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3856{ 4571{
3857 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3858 return; 4573 return;
3859 4574
3860 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3881 4596
3882 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3883} 4598}
3884 4599
3885void 4600void
3886ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3887{ 4602{
3888 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3889 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3890 return; 4605 return;
3891 4606
… …
3907} 4622}
3908#endif 4623#endif
3909 4624
3910#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3911void 4626void
3912ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3913{ 4628{
3914 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3915 return; 4630 return;
3916 4631
3917 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3922 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3923 4638
3924 ++idleall; 4639 ++idleall;
3925 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3926 4641
3927 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4642 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3928 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3929 } 4644 }
3930 4645
3931 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3932} 4647}
3933 4648
3934void 4649void
3935ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3936{ 4651{
3937 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3939 return; 4654 return;
3940 4655
… …
3954} 4669}
3955#endif 4670#endif
3956 4671
3957#if EV_PREPARE_ENABLE 4672#if EV_PREPARE_ENABLE
3958void 4673void
3959ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3960{ 4675{
3961 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3962 return; 4677 return;
3963 4678
3964 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3965 4680
3966 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3967 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3968 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3969 4684
3970 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3971} 4686}
3972 4687
3973void 4688void
3974ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3975{ 4690{
3976 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3977 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3978 return; 4693 return;
3979 4694
… …
3992} 4707}
3993#endif 4708#endif
3994 4709
3995#if EV_CHECK_ENABLE 4710#if EV_CHECK_ENABLE
3996void 4711void
3997ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3998{ 4713{
3999 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
4000 return; 4715 return;
4001 4716
4002 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
4003 4718
4004 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
4005 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4006 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
4007 4722
4008 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
4009} 4724}
4010 4725
4011void 4726void
4012ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4013{ 4728{
4014 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
4015 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
4016 return; 4731 return;
4017 4732
… …
4029 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
4030} 4745}
4031#endif 4746#endif
4032 4747
4033#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
4034void noinline 4749noinline
4750void
4035ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4036{ 4752{
4037 ev_run (w->other, EVRUN_NOWAIT); 4753 ev_run (w->other, EVRUN_NOWAIT);
4038} 4754}
4039 4755
4040static void 4756static void
… …
4088 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
4089} 4805}
4090#endif 4806#endif
4091 4807
4092void 4808void
4093ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4094{ 4810{
4095 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
4096 return; 4812 return;
4097 4813
4098 { 4814 {
… …
4119 4835
4120 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
4121} 4837}
4122 4838
4123void 4839void
4124ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4125{ 4841{
4126 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
4127 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
4128 return; 4844 return;
4129 4845
… …
4139} 4855}
4140#endif 4856#endif
4141 4857
4142#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
4143void 4859void
4144ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4145{ 4861{
4146 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
4147 return; 4863 return;
4148 4864
4149 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
4150 4866
4151 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
4152 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4153 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
4154 4870
4155 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
4156} 4872}
4157 4873
4158void 4874void
4159ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4160{ 4876{
4161 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
4162 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
4163 return; 4879 return;
4164 4880
… …
4177} 4893}
4178#endif 4894#endif
4179 4895
4180#if EV_CLEANUP_ENABLE 4896#if EV_CLEANUP_ENABLE
4181void 4897void
4182ev_cleanup_start (EV_P_ ev_cleanup *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4183{ 4899{
4184 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
4185 return; 4901 return;
4186 4902
4187 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
4188 4904
4189 ev_start (EV_A_ (W)w, ++cleanupcnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4191 cleanups [cleanupcnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
4192 4908
4193 /* cleanup watchers should never keep a refcount on the loop */ 4909 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A); 4910 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
4196} 4912}
4197 4913
4198void 4914void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4200{ 4916{
4201 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
4203 return; 4919 return;
4204 4920
… …
4218} 4934}
4219#endif 4935#endif
4220 4936
4221#if EV_ASYNC_ENABLE 4937#if EV_ASYNC_ENABLE
4222void 4938void
4223ev_async_start (EV_P_ ev_async *w) 4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4224{ 4940{
4225 if (expect_false (ev_is_active (w))) 4941 if (expect_false (ev_is_active (w)))
4226 return; 4942 return;
4227 4943
4228 w->sent = 0; 4944 w->sent = 0;
… …
4230 evpipe_init (EV_A); 4946 evpipe_init (EV_A);
4231 4947
4232 EV_FREQUENT_CHECK; 4948 EV_FREQUENT_CHECK;
4233 4949
4234 ev_start (EV_A_ (W)w, ++asynccnt); 4950 ev_start (EV_A_ (W)w, ++asynccnt);
4235 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4236 asyncs [asynccnt - 1] = w; 4952 asyncs [asynccnt - 1] = w;
4237 4953
4238 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
4239} 4955}
4240 4956
4241void 4957void
4242ev_async_stop (EV_P_ ev_async *w) 4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4243{ 4959{
4244 clear_pending (EV_A_ (W)w); 4960 clear_pending (EV_A_ (W)w);
4245 if (expect_false (!ev_is_active (w))) 4961 if (expect_false (!ev_is_active (w)))
4246 return; 4962 return;
4247 4963
… …
4258 4974
4259 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
4260} 4976}
4261 4977
4262void 4978void
4263ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4264{ 4980{
4265 w->sent = 1; 4981 w->sent = 1;
4266 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
4267} 4983}
4268#endif 4984#endif
… …
4305 5021
4306 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5022 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4307} 5023}
4308 5024
4309void 5025void
4310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5026ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4311{ 5027{
4312 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5028 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4313
4314 if (expect_false (!once))
4315 {
4316 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4317 return;
4318 }
4319 5029
4320 once->cb = cb; 5030 once->cb = cb;
4321 once->arg = arg; 5031 once->arg = arg;
4322 5032
4323 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
4336} 5046}
4337 5047
4338/*****************************************************************************/ 5048/*****************************************************************************/
4339 5049
4340#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
4341void ecb_cold 5051ecb_cold
5052void
4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5053ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4343{ 5054{
4344 int i, j; 5055 int i, j;
4345 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
4346 5057
4347 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))

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