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Comparing libev/ev.c (file contents):
Revision 1.409 by root, Sat Feb 4 15:17:34 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) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 670 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386 || __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 || __amd64__ || __x86_64 || __x86_64__ 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 __sparc || __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 | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 699 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 700 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #elif defined(__s390__) || defined(__s390x__) 701 #elif defined __s390__ || defined __s390x__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 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")
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")
567 #endif 720 #endif
568 #endif 721 #endif
569#endif 722#endif
570 723
571#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
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 737 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
573 #define ECB_MEMORY_FENCE __sync_synchronize () 738 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 739 #elif _MSC_VER >= 1500 /* VC++ 2008 */
575 /*#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()
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 745 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 746 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 747 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #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 */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 749 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32) 750 #elif defined _WIN32
582 #include <WinNT.h> 751 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 752 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 753 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h> 754 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier () 755 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 756 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
588 #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)
589 #endif 777 #endif
590#endif 778#endif
591 779
592#ifndef ECB_MEMORY_FENCE 780#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS 781 #if !ECB_AVOID_PTHREADS
… …
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 793 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #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)
607 #endif 795 #endif
608#endif 796#endif
609 797
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 798#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 799 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif 800#endif
613 801
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 802#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 803 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif 804#endif
617 805
618/*****************************************************************************/ 806/*****************************************************************************/
619 807
620#define ECB_C99 (__STDC_VERSION__ >= 199901L) 808#if ECB_CPP
621
622#if __cplusplus
623 #define ecb_inline static inline 809 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5) 810#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__ 811 #define ecb_inline static __inline__
626#elif ECB_C99 812#elif ECB_C99
627 #define ecb_inline static inline 813 #define ecb_inline static inline
… …
641 827
642#define ECB_CONCAT_(a, b) a ## b 828#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 829#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a 830#define ECB_STRINGIFY_(a) # a
645#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))
646 833
647#define ecb_function_ ecb_inline 834#define ecb_function_ ecb_inline
648 835
649#if ECB_GCC_VERSION(3,1) 836#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
650 #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)
651 #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)
652 #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)
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 859 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else 860#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality) 861 #define ecb_prefetch(addr,rw,locality)
659#endif 862#endif
660 863
661/* no emulation for ecb_decltype */ 864/* no emulation for ecb_decltype */
662#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; };
663 #define ecb_decltype(x) __decltype(x) 868 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
664#elif ECB_GCC_VERSION(3,0) 869#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
665 #define ecb_decltype(x) __typeof(x) 870 #define ecb_decltype(x) __typeof__ (x)
666#endif 871#endif
667 872
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
668#define ecb_noinline ecb_attribute ((__noinline__)) 890 #define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__)) 891#endif
892
670#define ecb_unused ecb_attribute ((__unused__)) 893#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__)) 894#define ecb_const ecb_attribute ((__const__))
672#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
673 908
674#if ECB_GCC_VERSION(4,3) 909#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__)) 910 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__)) 911 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__)) 912 #define ecb_cold ecb_attribute ((__cold__))
… …
689/* for compatibility to the rest of the world */ 924/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr) 925#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr) 926#define ecb_unlikely(expr) ecb_expect_false (expr)
692 927
693/* count trailing zero bits and count # of one bits */ 928/* count trailing zero bits and count # of one bits */
694#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))
695 /* 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 */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 934 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 935 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x) 936 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x) 937 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x) 938 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */ 939 /* no popcountll */
702#else 940#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 941 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
704 ecb_function_ int 942 ecb_function_ ecb_const int
705 ecb_ctz32 (uint32_t x) 943 ecb_ctz32 (uint32_t x)
706 { 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
707 int r = 0; 950 int r = 0;
708 951
709 x &= ~x + 1; /* this isolates the lowest bit */ 952 x &= ~x + 1; /* this isolates the lowest bit */
710 953
711#if ECB_branchless_on_i386 954#if ECB_branchless_on_i386
… …
721 if (x & 0xff00ff00) r += 8; 964 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16; 965 if (x & 0xffff0000) r += 16;
723#endif 966#endif
724 967
725 return r; 968 return r;
969#endif
726 } 970 }
727 971
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 972 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
729 ecb_function_ int 973 ecb_function_ ecb_const int
730 ecb_ctz64 (uint64_t x) 974 ecb_ctz64 (uint64_t x)
731 { 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
732 int shift = x & 0xffffffffU ? 0 : 32; 981 int shift = x & 0xffffffff ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift; 982 return ecb_ctz32 (x >> shift) + shift;
983#endif
734 } 984 }
735 985
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 986 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
737 ecb_function_ int 987 ecb_function_ ecb_const int
738 ecb_popcount32 (uint32_t x) 988 ecb_popcount32 (uint32_t x)
739 { 989 {
740 x -= (x >> 1) & 0x55555555; 990 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 991 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f; 992 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101; 993 x *= 0x01010101;
744 994
745 return x >> 24; 995 return x >> 24;
746 } 996 }
747 997
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 998 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
749 ecb_function_ int ecb_ld32 (uint32_t x) 999 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
750 { 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
751 int r = 0; 1006 int r = 0;
752 1007
753 if (x >> 16) { x >>= 16; r += 16; } 1008 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; } 1009 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; } 1010 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; } 1011 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; } 1012 if (x >> 1) { r += 1; }
758 1013
759 return r; 1014 return r;
1015#endif
760 } 1016 }
761 1017
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1018 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
763 ecb_function_ int ecb_ld64 (uint64_t x) 1019 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
764 { 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
765 int r = 0; 1026 int r = 0;
766 1027
767 if (x >> 32) { x >>= 32; r += 32; } 1028 if (x >> 32) { x >>= 32; r += 32; }
768 1029
769 return r + ecb_ld32 (x); 1030 return r + ecb_ld32 (x);
1031#endif
770 } 1032 }
771#endif 1033#endif
772 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
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1040ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1041ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
775{ 1042{
776 return ( (x * 0x0802U & 0x22110U) 1043 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1044 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778} 1045}
779 1046
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1047ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1048ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
782{ 1049{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1050 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1051 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1052 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8); 1053 x = ( x >> 8 ) | ( x << 8);
787 1054
788 return x; 1055 return x;
789} 1056}
790 1057
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1058ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1059ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
793{ 1060{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1061 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1062 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1063 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1064 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
800 return x; 1067 return x;
801} 1068}
802 1069
803/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1070/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */ 1071/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1072ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
806ecb_function_ int 1073ecb_function_ ecb_const int
807ecb_popcount64 (uint64_t x) 1074ecb_popcount64 (uint64_t x)
808{ 1075{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1076 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810} 1077}
811 1078
812ecb_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);
813ecb_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);
814ecb_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);
815ecb_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);
816ecb_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);
817ecb_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);
818ecb_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);
819ecb_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);
820 1087
821ecb_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); }
822ecb_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); }
823ecb_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); }
824ecb_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); }
825ecb_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); }
826ecb_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); }
827ecb_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); }
828ecb_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); }
829 1096
830#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
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1101 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1102 #endif
832 #define ecb_bswap32(x) __builtin_bswap32 (x) 1103 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #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)))
834#else 1110#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1111 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
836 ecb_function_ uint16_t 1112 ecb_function_ ecb_const uint16_t
837 ecb_bswap16 (uint16_t x) 1113 ecb_bswap16 (uint16_t x)
838 { 1114 {
839 return ecb_rotl16 (x, 8); 1115 return ecb_rotl16 (x, 8);
840 } 1116 }
841 1117
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1118 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
843 ecb_function_ uint32_t 1119 ecb_function_ ecb_const uint32_t
844 ecb_bswap32 (uint32_t x) 1120 ecb_bswap32 (uint32_t x)
845 { 1121 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1122 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 } 1123 }
848 1124
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1125 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
850 ecb_function_ uint64_t 1126 ecb_function_ ecb_const uint64_t
851 ecb_bswap64 (uint64_t x) 1127 ecb_bswap64 (uint64_t x)
852 { 1128 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1129 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 } 1130 }
855#endif 1131#endif
856 1132
857#if ECB_GCC_VERSION(4,5) 1133#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
858 #define ecb_unreachable() __builtin_unreachable () 1134 #define ecb_unreachable() __builtin_unreachable ()
859#else 1135#else
860 /* 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 :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1137 ecb_inline ecb_noreturn void ecb_unreachable (void);
862 ecb_inline void ecb_unreachable (void) { } 1138 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
863#endif 1139#endif
864 1140
865/* try to tell the compiler that some condition is definitely true */ 1141/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1142#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
867 1143
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1144ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
869ecb_inline unsigned char 1145ecb_inline ecb_const uint32_t
870ecb_byteorder_helper (void) 1146ecb_byteorder_helper (void)
871{ 1147{
872 const uint32_t u = 0x11223344; 1148 /* the union code still generates code under pressure in gcc, */
873 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
874} 1170}
875 1171
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1172ecb_inline ecb_const ecb_bool ecb_big_endian (void);
877ecb_inline 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; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1174ecb_inline ecb_const ecb_bool ecb_little_endian (void);
879ecb_inline 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; }
880 1176
881#if ECB_GCC_VERSION(3,0) || ECB_C99 1177#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #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))
883#else 1179#else
884 #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)))
885#endif 1181#endif
886 1182
887#if __cplusplus 1183#if ECB_CPP
888 template<typename T> 1184 template<typename T>
889 static inline T ecb_div_rd (T val, T div) 1185 static inline T ecb_div_rd (T val, T div)
890 { 1186 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1187 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 } 1188 }
… …
909 } 1205 }
910#else 1206#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1207 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif 1208#endif
913 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
914#endif 1515#endif
915 1516
916/* ECB.H END */ 1517/* ECB.H END */
917 1518
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1519#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
939#define inline_size ecb_inline 1540#define inline_size ecb_inline
940 1541
941#if EV_FEATURE_CODE 1542#if EV_FEATURE_CODE
942# define inline_speed ecb_inline 1543# define inline_speed ecb_inline
943#else 1544#else
944# define inline_speed static noinline 1545# define inline_speed noinline static
945#endif 1546#endif
946 1547
947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1548#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
948 1549
949#if EV_MINPRI == EV_MAXPRI 1550#if EV_MINPRI == EV_MAXPRI
950# define ABSPRI(w) (((W)w), 0) 1551# define ABSPRI(w) (((W)w), 0)
951#else 1552#else
952# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1553# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
953#endif 1554#endif
954 1555
955#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1556#define EMPTY /* required for microsofts broken pseudo-c compiler */
956#define EMPTY2(a,b) /* used to suppress some warnings */
957 1557
958typedef ev_watcher *W; 1558typedef ev_watcher *W;
959typedef ev_watcher_list *WL; 1559typedef ev_watcher_list *WL;
960typedef ev_watcher_time *WT; 1560typedef ev_watcher_time *WT;
961 1561
… …
996#else 1596#else
997 1597
998#include <float.h> 1598#include <float.h>
999 1599
1000/* a floor() replacement function, should be independent of ev_tstamp type */ 1600/* a floor() replacement function, should be independent of ev_tstamp type */
1601noinline
1001static ev_tstamp noinline 1602static ev_tstamp
1002ev_floor (ev_tstamp v) 1603ev_floor (ev_tstamp v)
1003{ 1604{
1004 /* the choice of shift factor is not terribly important */ 1605 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1606#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1607 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1038 1639
1039#ifdef __linux 1640#ifdef __linux
1040# include <sys/utsname.h> 1641# include <sys/utsname.h>
1041#endif 1642#endif
1042 1643
1043static unsigned int noinline ecb_cold 1644noinline ecb_cold
1645static unsigned int
1044ev_linux_version (void) 1646ev_linux_version (void)
1045{ 1647{
1046#ifdef __linux 1648#ifdef __linux
1047 unsigned int v = 0; 1649 unsigned int v = 0;
1048 struct utsname buf; 1650 struct utsname buf;
… …
1077} 1679}
1078 1680
1079/*****************************************************************************/ 1681/*****************************************************************************/
1080 1682
1081#if EV_AVOID_STDIO 1683#if EV_AVOID_STDIO
1082static void noinline ecb_cold 1684noinline ecb_cold
1685static void
1083ev_printerr (const char *msg) 1686ev_printerr (const char *msg)
1084{ 1687{
1085 write (STDERR_FILENO, msg, strlen (msg)); 1688 write (STDERR_FILENO, msg, strlen (msg));
1086} 1689}
1087#endif 1690#endif
1088 1691
1089static void (*syserr_cb)(const char *msg); 1692static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1090 1693
1091void ecb_cold 1694ecb_cold
1695void
1092ev_set_syserr_cb (void (*cb)(const char *msg)) 1696ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1093{ 1697{
1094 syserr_cb = cb; 1698 syserr_cb = cb;
1095} 1699}
1096 1700
1097static void noinline ecb_cold 1701noinline ecb_cold
1702static void
1098ev_syserr (const char *msg) 1703ev_syserr (const char *msg)
1099{ 1704{
1100 if (!msg) 1705 if (!msg)
1101 msg = "(libev) system error"; 1706 msg = "(libev) system error";
1102 1707
… …
1115 abort (); 1720 abort ();
1116 } 1721 }
1117} 1722}
1118 1723
1119static void * 1724static void *
1120ev_realloc_emul (void *ptr, long size) 1725ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1121{ 1726{
1122#if __GLIBC__
1123 return realloc (ptr, size);
1124#else
1125 /* some systems, notably openbsd and darwin, fail to properly 1727 /* some systems, notably openbsd and darwin, fail to properly
1126 * 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
1127 * 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.
1128 */ 1732 */
1129 1733
1130 if (size) 1734 if (size)
1131 return realloc (ptr, size); 1735 return realloc (ptr, size);
1132 1736
1133 free (ptr); 1737 free (ptr);
1134 return 0; 1738 return 0;
1135#endif
1136} 1739}
1137 1740
1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1741static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1139 1742
1140void ecb_cold 1743ecb_cold
1744void
1141ev_set_allocator (void *(*cb)(void *ptr, long size)) 1745ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1142{ 1746{
1143 alloc = cb; 1747 alloc = cb;
1144} 1748}
1145 1749
1146inline_speed void * 1750inline_speed void *
… …
1173typedef struct 1777typedef struct
1174{ 1778{
1175 WL head; 1779 WL head;
1176 unsigned char events; /* the events watched for */ 1780 unsigned char events; /* the events watched for */
1177 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) */
1178 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 */
1179 unsigned char unused; 1783 unsigned char unused;
1180#if EV_USE_EPOLL 1784#if EV_USE_EPOLL
1181 unsigned int egen; /* generation counter to counter epoll bugs */ 1785 unsigned int egen; /* generation counter to counter epoll bugs */
1182#endif 1786#endif
1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1263 1867
1264/*****************************************************************************/ 1868/*****************************************************************************/
1265 1869
1266#ifndef EV_HAVE_EV_TIME 1870#ifndef EV_HAVE_EV_TIME
1267ev_tstamp 1871ev_tstamp
1268ev_time (void) 1872ev_time (void) EV_NOEXCEPT
1269{ 1873{
1270#if EV_USE_REALTIME 1874#if EV_USE_REALTIME
1271 if (expect_true (have_realtime)) 1875 if (expect_true (have_realtime))
1272 { 1876 {
1273 struct timespec ts; 1877 struct timespec ts;
… …
1297 return ev_time (); 1901 return ev_time ();
1298} 1902}
1299 1903
1300#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1301ev_tstamp 1905ev_tstamp
1302ev_now (EV_P) 1906ev_now (EV_P) EV_NOEXCEPT
1303{ 1907{
1304 return ev_rt_now; 1908 return ev_rt_now;
1305} 1909}
1306#endif 1910#endif
1307 1911
1308void 1912void
1309ev_sleep (ev_tstamp delay) 1913ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1310{ 1914{
1311 if (delay > 0.) 1915 if (delay > 0.)
1312 { 1916 {
1313#if EV_USE_NANOSLEEP 1917#if EV_USE_NANOSLEEP
1314 struct timespec ts; 1918 struct timespec ts;
1315 1919
1316 EV_TS_SET (ts, delay); 1920 EV_TS_SET (ts, delay);
1317 nanosleep (&ts, 0); 1921 nanosleep (&ts, 0);
1318#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) */
1319 Sleep ((unsigned long)(delay * 1e3)); 1925 Sleep ((unsigned long)(delay * 1e3));
1320#else 1926#else
1321 struct timeval tv; 1927 struct timeval tv;
1322 1928
1323 /* 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 */
… …
1354 } 1960 }
1355 1961
1356 return ncur; 1962 return ncur;
1357} 1963}
1358 1964
1359static void * noinline ecb_cold 1965noinline ecb_cold
1966static void *
1360array_realloc (int elem, void *base, int *cur, int cnt) 1967array_realloc (int elem, void *base, int *cur, int cnt)
1361{ 1968{
1362 *cur = array_nextsize (elem, *cur, cnt); 1969 *cur = array_nextsize (elem, *cur, cnt);
1363 return ev_realloc (base, elem * *cur); 1970 return ev_realloc (base, elem * *cur);
1364} 1971}
1365 1972
1973#define array_needsize_noinit(base,count)
1974
1366#define array_init_zero(base,count) \ 1975#define array_needsize_zerofill(base,count) \
1367 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1976 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1368 1977
1369#define array_needsize(type,base,cur,cnt,init) \ 1978#define array_needsize(type,base,cur,cnt,init) \
1370 if (expect_false ((cnt) > (cur))) \ 1979 if (expect_false ((cnt) > (cur))) \
1371 { \ 1980 { \
1372 int ecb_unused ocur_ = (cur); \ 1981 ecb_unused int ocur_ = (cur); \
1373 (base) = (type *)array_realloc \ 1982 (base) = (type *)array_realloc \
1374 (sizeof (type), (base), &(cur), (cnt)); \ 1983 (sizeof (type), (base), &(cur), (cnt)); \
1375 init ((base) + (ocur_), (cur) - ocur_); \ 1984 init ((base) + (ocur_), (cur) - ocur_); \
1376 } 1985 }
1377 1986
… …
1389 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
1390 1999
1391/*****************************************************************************/ 2000/*****************************************************************************/
1392 2001
1393/* dummy callback for pending events */ 2002/* dummy callback for pending events */
1394static void noinline 2003noinline
2004static void
1395pendingcb (EV_P_ ev_prepare *w, int revents) 2005pendingcb (EV_P_ ev_prepare *w, int revents)
1396{ 2006{
1397} 2007}
1398 2008
1399void noinline 2009noinline
2010void
1400ev_feed_event (EV_P_ void *w, int revents) 2011ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1401{ 2012{
1402 W w_ = (W)w; 2013 W w_ = (W)w;
1403 int pri = ABSPRI (w_); 2014 int pri = ABSPRI (w_);
1404 2015
1405 if (expect_false (w_->pending)) 2016 if (expect_false (w_->pending))
1406 pendings [pri][w_->pending - 1].events |= revents; 2017 pendings [pri][w_->pending - 1].events |= revents;
1407 else 2018 else
1408 { 2019 {
1409 w_->pending = ++pendingcnt [pri]; 2020 w_->pending = ++pendingcnt [pri];
1410 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2021 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1411 pendings [pri][w_->pending - 1].w = w_; 2022 pendings [pri][w_->pending - 1].w = w_;
1412 pendings [pri][w_->pending - 1].events = revents; 2023 pendings [pri][w_->pending - 1].events = revents;
1413 } 2024 }
2025
2026 pendingpri = NUMPRI - 1;
1414} 2027}
1415 2028
1416inline_speed void 2029inline_speed void
1417feed_reverse (EV_P_ W w) 2030feed_reverse (EV_P_ W w)
1418{ 2031{
1419 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2032 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1420 rfeeds [rfeedcnt++] = w; 2033 rfeeds [rfeedcnt++] = w;
1421} 2034}
1422 2035
1423inline_size void 2036inline_size void
1424feed_reverse_done (EV_P_ int revents) 2037feed_reverse_done (EV_P_ int revents)
… …
1464 if (expect_true (!anfd->reify)) 2077 if (expect_true (!anfd->reify))
1465 fd_event_nocheck (EV_A_ fd, revents); 2078 fd_event_nocheck (EV_A_ fd, revents);
1466} 2079}
1467 2080
1468void 2081void
1469ev_feed_fd_event (EV_P_ int fd, int revents) 2082ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1470{ 2083{
1471 if (fd >= 0 && fd < anfdmax) 2084 if (fd >= 0 && fd < anfdmax)
1472 fd_event_nocheck (EV_A_ fd, revents); 2085 fd_event_nocheck (EV_A_ fd, revents);
1473} 2086}
1474 2087
… …
1532 2145
1533 fdchangecnt = 0; 2146 fdchangecnt = 0;
1534} 2147}
1535 2148
1536/* something about the given fd changed */ 2149/* something about the given fd changed */
1537inline_size void 2150inline_size
2151void
1538fd_change (EV_P_ int fd, int flags) 2152fd_change (EV_P_ int fd, int flags)
1539{ 2153{
1540 unsigned char reify = anfds [fd].reify; 2154 unsigned char reify = anfds [fd].reify;
1541 anfds [fd].reify |= flags; 2155 anfds [fd].reify |= flags;
1542 2156
1543 if (expect_true (!reify)) 2157 if (expect_true (!reify))
1544 { 2158 {
1545 ++fdchangecnt; 2159 ++fdchangecnt;
1546 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2160 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1547 fdchanges [fdchangecnt - 1] = fd; 2161 fdchanges [fdchangecnt - 1] = fd;
1548 } 2162 }
1549} 2163}
1550 2164
1551/* 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 */
1552inline_speed void ecb_cold 2166inline_speed ecb_cold void
1553fd_kill (EV_P_ int fd) 2167fd_kill (EV_P_ int fd)
1554{ 2168{
1555 ev_io *w; 2169 ev_io *w;
1556 2170
1557 while ((w = (ev_io *)anfds [fd].head)) 2171 while ((w = (ev_io *)anfds [fd].head))
… …
1560 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);
1561 } 2175 }
1562} 2176}
1563 2177
1564/* check whether the given fd is actually valid, for error recovery */ 2178/* check whether the given fd is actually valid, for error recovery */
1565inline_size int ecb_cold 2179inline_size ecb_cold int
1566fd_valid (int fd) 2180fd_valid (int fd)
1567{ 2181{
1568#ifdef _WIN32 2182#ifdef _WIN32
1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2183 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1570#else 2184#else
1571 return fcntl (fd, F_GETFD) != -1; 2185 return fcntl (fd, F_GETFD) != -1;
1572#endif 2186#endif
1573} 2187}
1574 2188
1575/* called on EBADF to verify fds */ 2189/* called on EBADF to verify fds */
1576static void noinline ecb_cold 2190noinline ecb_cold
2191static void
1577fd_ebadf (EV_P) 2192fd_ebadf (EV_P)
1578{ 2193{
1579 int fd; 2194 int fd;
1580 2195
1581 for (fd = 0; fd < anfdmax; ++fd) 2196 for (fd = 0; fd < anfdmax; ++fd)
… …
1583 if (!fd_valid (fd) && errno == EBADF) 2198 if (!fd_valid (fd) && errno == EBADF)
1584 fd_kill (EV_A_ fd); 2199 fd_kill (EV_A_ fd);
1585} 2200}
1586 2201
1587/* 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 */
1588static void noinline ecb_cold 2203noinline ecb_cold
2204static void
1589fd_enomem (EV_P) 2205fd_enomem (EV_P)
1590{ 2206{
1591 int fd; 2207 int fd;
1592 2208
1593 for (fd = anfdmax; fd--; ) 2209 for (fd = anfdmax; fd--; )
… …
1597 break; 2213 break;
1598 } 2214 }
1599} 2215}
1600 2216
1601/* 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 */
1602static void noinline 2218noinline
2219static void
1603fd_rearm_all (EV_P) 2220fd_rearm_all (EV_P)
1604{ 2221{
1605 int fd; 2222 int fd;
1606 2223
1607 for (fd = 0; fd < anfdmax; ++fd) 2224 for (fd = 0; fd < anfdmax; ++fd)
… …
1788 2405
1789/*****************************************************************************/ 2406/*****************************************************************************/
1790 2407
1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2408#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1792 2409
1793static void noinline ecb_cold 2410noinline ecb_cold
2411static void
1794evpipe_init (EV_P) 2412evpipe_init (EV_P)
1795{ 2413{
1796 if (!ev_is_active (&pipe_w)) 2414 if (!ev_is_active (&pipe_w))
1797 { 2415 {
2416 int fds [2];
2417
1798# if EV_USE_EVENTFD 2418# if EV_USE_EVENTFD
2419 fds [0] = -1;
1799 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2420 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1800 if (evfd < 0 && errno == EINVAL) 2421 if (fds [1] < 0 && errno == EINVAL)
1801 evfd = eventfd (0, 0); 2422 fds [1] = eventfd (0, 0);
1802 2423
1803 if (evfd >= 0) 2424 if (fds [1] < 0)
2425# endif
1804 { 2426 {
2427 while (pipe (fds))
2428 ev_syserr ("(libev) error creating signal/async pipe");
2429
2430 fd_intern (fds [0]);
2431 }
2432
1805 evpipe [0] = -1; 2433 evpipe [0] = fds [0];
1806 fd_intern (evfd); /* doing it twice doesn't hurt */ 2434
1807 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));
1808 } 2485 }
1809 else 2486 else
1810# endif 2487#endif
1811 { 2488 {
1812 while (pipe (evpipe)) 2489#ifdef _WIN32
1813 ev_syserr ("(libev) error creating signal/async pipe"); 2490 WSABUF buf;
1814 2491 DWORD sent;
1815 fd_intern (evpipe [0]); 2492 buf.buf = (char *)&buf;
1816 fd_intern (evpipe [1]); 2493 buf.len = 1;
1817 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2494 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1818 } 2495#else
1819
1820 ev_io_start (EV_A_ &pipe_w);
1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1822 }
1823}
1824
1825inline_speed void
1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1827{
1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1845 old_errno = errno; /* save errno because write will clobber it */
1846
1847#if EV_USE_EVENTFD
1848 if (evfd >= 0)
1849 {
1850 uint64_t counter = 1;
1851 write (evfd, &counter, sizeof (uint64_t));
1852 }
1853 else
1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1861 write (evpipe [1], &(evpipe [1]), 1); 2496 write (evpipe [1], &(evpipe [1]), 1);
2497#endif
1862 } 2498 }
1863 2499
1864 errno = old_errno; 2500 errno = old_errno;
1865 } 2501 }
1866} 2502}
… …
1873 int i; 2509 int i;
1874 2510
1875 if (revents & EV_READ) 2511 if (revents & EV_READ)
1876 { 2512 {
1877#if EV_USE_EVENTFD 2513#if EV_USE_EVENTFD
1878 if (evfd >= 0) 2514 if (evpipe [0] < 0)
1879 { 2515 {
1880 uint64_t counter; 2516 uint64_t counter;
1881 read (evfd, &counter, sizeof (uint64_t)); 2517 read (evpipe [1], &counter, sizeof (uint64_t));
1882 } 2518 }
1883 else 2519 else
1884#endif 2520#endif
1885 { 2521 {
1886 char dummy; 2522 char dummy[4];
1887 /* 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
1888 read (evpipe [0], &dummy, 1); 2531 read (evpipe [0], &dummy, sizeof (dummy));
2532#endif
1889 } 2533 }
1890 } 2534 }
1891 2535
1892 pipe_write_skipped = 0; 2536 pipe_write_skipped = 0;
2537
2538 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1893 2539
1894#if EV_SIGNAL_ENABLE 2540#if EV_SIGNAL_ENABLE
1895 if (sig_pending) 2541 if (sig_pending)
1896 { 2542 {
1897 sig_pending = 0; 2543 sig_pending = 0;
2544
2545 ECB_MEMORY_FENCE;
1898 2546
1899 for (i = EV_NSIG - 1; i--; ) 2547 for (i = EV_NSIG - 1; i--; )
1900 if (expect_false (signals [i].pending)) 2548 if (expect_false (signals [i].pending))
1901 ev_feed_signal_event (EV_A_ i + 1); 2549 ev_feed_signal_event (EV_A_ i + 1);
1902 } 2550 }
… …
1904 2552
1905#if EV_ASYNC_ENABLE 2553#if EV_ASYNC_ENABLE
1906 if (async_pending) 2554 if (async_pending)
1907 { 2555 {
1908 async_pending = 0; 2556 async_pending = 0;
2557
2558 ECB_MEMORY_FENCE;
1909 2559
1910 for (i = asynccnt; i--; ) 2560 for (i = asynccnt; i--; )
1911 if (asyncs [i]->sent) 2561 if (asyncs [i]->sent)
1912 { 2562 {
1913 asyncs [i]->sent = 0; 2563 asyncs [i]->sent = 0;
2564 ECB_MEMORY_FENCE_RELEASE;
1914 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2565 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1915 } 2566 }
1916 } 2567 }
1917#endif 2568#endif
1918} 2569}
1919 2570
1920/*****************************************************************************/ 2571/*****************************************************************************/
1921 2572
1922void 2573void
1923ev_feed_signal (int signum) 2574ev_feed_signal (int signum) EV_NOEXCEPT
1924{ 2575{
1925#if EV_MULTIPLICITY 2576#if EV_MULTIPLICITY
2577 EV_P;
2578 ECB_MEMORY_FENCE_ACQUIRE;
1926 EV_P = signals [signum - 1].loop; 2579 EV_A = signals [signum - 1].loop;
1927 2580
1928 if (!EV_A) 2581 if (!EV_A)
1929 return; 2582 return;
1930#endif 2583#endif
1931 2584
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1; 2585 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending); 2586 evpipe_write (EV_A_ &sig_pending);
1937} 2587}
1938 2588
1939static void 2589static void
… …
1944#endif 2594#endif
1945 2595
1946 ev_feed_signal (signum); 2596 ev_feed_signal (signum);
1947} 2597}
1948 2598
1949void noinline 2599noinline
2600void
1950ev_feed_signal_event (EV_P_ int signum) 2601ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1951{ 2602{
1952 WL w; 2603 WL w;
1953 2604
1954 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2605 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1955 return; 2606 return;
1956 2607
1957 --signum; 2608 --signum;
1958 2609
1959#if EV_MULTIPLICITY 2610#if EV_MULTIPLICITY
… …
1963 if (expect_false (signals [signum].loop != EV_A)) 2614 if (expect_false (signals [signum].loop != EV_A))
1964 return; 2615 return;
1965#endif 2616#endif
1966 2617
1967 signals [signum].pending = 0; 2618 signals [signum].pending = 0;
2619 ECB_MEMORY_FENCE_RELEASE;
1968 2620
1969 for (w = signals [signum].head; w; w = w->next) 2621 for (w = signals [signum].head; w; w = w->next)
1970 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2622 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1971} 2623}
1972 2624
… …
2060# include "ev_port.c" 2712# include "ev_port.c"
2061#endif 2713#endif
2062#if EV_USE_KQUEUE 2714#if EV_USE_KQUEUE
2063# include "ev_kqueue.c" 2715# include "ev_kqueue.c"
2064#endif 2716#endif
2717#if EV_USE_LINUXAIO
2718# include "ev_linuxaio.c"
2719#endif
2065#if EV_USE_EPOLL 2720#if EV_USE_EPOLL
2066# include "ev_epoll.c" 2721# include "ev_epoll.c"
2067#endif 2722#endif
2068#if EV_USE_POLL 2723#if EV_USE_POLL
2069# include "ev_poll.c" 2724# include "ev_poll.c"
2070#endif 2725#endif
2071#if EV_USE_SELECT 2726#if EV_USE_SELECT
2072# include "ev_select.c" 2727# include "ev_select.c"
2073#endif 2728#endif
2074 2729
2075int ecb_cold 2730ecb_cold int
2076ev_version_major (void) 2731ev_version_major (void) EV_NOEXCEPT
2077{ 2732{
2078 return EV_VERSION_MAJOR; 2733 return EV_VERSION_MAJOR;
2079} 2734}
2080 2735
2081int ecb_cold 2736ecb_cold int
2082ev_version_minor (void) 2737ev_version_minor (void) EV_NOEXCEPT
2083{ 2738{
2084 return EV_VERSION_MINOR; 2739 return EV_VERSION_MINOR;
2085} 2740}
2086 2741
2087/* 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 */
2088int inline_size ecb_cold 2743inline_size ecb_cold int
2089enable_secure (void) 2744enable_secure (void)
2090{ 2745{
2091#ifdef _WIN32 2746#ifdef _WIN32
2092 return 0; 2747 return 0;
2093#else 2748#else
2094 return getuid () != geteuid () 2749 return getuid () != geteuid ()
2095 || getgid () != getegid (); 2750 || getgid () != getegid ();
2096#endif 2751#endif
2097} 2752}
2098 2753
2099unsigned int ecb_cold 2754ecb_cold
2755unsigned int
2100ev_supported_backends (void) 2756ev_supported_backends (void) EV_NOEXCEPT
2101{ 2757{
2102 unsigned int flags = 0; 2758 unsigned int flags = 0;
2103 2759
2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2760 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2105 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2761 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2106 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2762 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2763 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2107 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2764 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2765 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2109 2766
2110 return flags; 2767 return flags;
2111} 2768}
2112 2769
2113unsigned int ecb_cold 2770ecb_cold
2771unsigned int
2114ev_recommended_backends (void) 2772ev_recommended_backends (void) EV_NOEXCEPT
2115{ 2773{
2116 unsigned int flags = ev_supported_backends (); 2774 unsigned int flags = ev_supported_backends ();
2117 2775
2118#ifndef __NetBSD__ 2776#ifndef __NetBSD__
2119 /* kqueue is borked on everything but netbsd apparently */ 2777 /* kqueue is borked on everything but netbsd apparently */
… …
2130#endif 2788#endif
2131 2789
2132 return flags; 2790 return flags;
2133} 2791}
2134 2792
2135unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2136ev_embeddable_backends (void) 2795ev_embeddable_backends (void) EV_NOEXCEPT
2137{ 2796{
2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2797 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2139 2798
2140 /* 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 */
2141 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 */
… …
2143 2802
2144 return flags; 2803 return flags;
2145} 2804}
2146 2805
2147unsigned int 2806unsigned int
2148ev_backend (EV_P) 2807ev_backend (EV_P) EV_NOEXCEPT
2149{ 2808{
2150 return backend; 2809 return backend;
2151} 2810}
2152 2811
2153#if EV_FEATURE_API 2812#if EV_FEATURE_API
2154unsigned int 2813unsigned int
2155ev_iteration (EV_P) 2814ev_iteration (EV_P) EV_NOEXCEPT
2156{ 2815{
2157 return loop_count; 2816 return loop_count;
2158} 2817}
2159 2818
2160unsigned int 2819unsigned int
2161ev_depth (EV_P) 2820ev_depth (EV_P) EV_NOEXCEPT
2162{ 2821{
2163 return loop_depth; 2822 return loop_depth;
2164} 2823}
2165 2824
2166void 2825void
2167ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2826ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2168{ 2827{
2169 io_blocktime = interval; 2828 io_blocktime = interval;
2170} 2829}
2171 2830
2172void 2831void
2173ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2832ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2174{ 2833{
2175 timeout_blocktime = interval; 2834 timeout_blocktime = interval;
2176} 2835}
2177 2836
2178void 2837void
2179ev_set_userdata (EV_P_ void *data) 2838ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2180{ 2839{
2181 userdata = data; 2840 userdata = data;
2182} 2841}
2183 2842
2184void * 2843void *
2185ev_userdata (EV_P) 2844ev_userdata (EV_P) EV_NOEXCEPT
2186{ 2845{
2187 return userdata; 2846 return userdata;
2188} 2847}
2189 2848
2190void 2849void
2191ev_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
2192{ 2851{
2193 invoke_cb = invoke_pending_cb; 2852 invoke_cb = invoke_pending_cb;
2194} 2853}
2195 2854
2196void 2855void
2197ev_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
2198{ 2857{
2199 release_cb = release; 2858 release_cb = release;
2200 acquire_cb = acquire; 2859 acquire_cb = acquire;
2201} 2860}
2202#endif 2861#endif
2203 2862
2204/* initialise a loop structure, must be zero-initialised */ 2863/* initialise a loop structure, must be zero-initialised */
2205static void noinline ecb_cold 2864noinline ecb_cold
2865static void
2206loop_init (EV_P_ unsigned int flags) 2866loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2207{ 2867{
2208 if (!backend) 2868 if (!backend)
2209 { 2869 {
2210 origflags = flags; 2870 origflags = flags;
2211 2871
… …
2256#if EV_ASYNC_ENABLE 2916#if EV_ASYNC_ENABLE
2257 async_pending = 0; 2917 async_pending = 0;
2258#endif 2918#endif
2259 pipe_write_skipped = 0; 2919 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0; 2920 pipe_write_wanted = 0;
2921 evpipe [0] = -1;
2922 evpipe [1] = -1;
2261#if EV_USE_INOTIFY 2923#if EV_USE_INOTIFY
2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2924 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2263#endif 2925#endif
2264#if EV_USE_SIGNALFD 2926#if EV_USE_SIGNALFD
2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2927 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2267 2929
2268 if (!(flags & EVBACKEND_MASK)) 2930 if (!(flags & EVBACKEND_MASK))
2269 flags |= ev_recommended_backends (); 2931 flags |= ev_recommended_backends ();
2270 2932
2271#if EV_USE_IOCP 2933#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2934 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif 2935#endif
2274#if EV_USE_PORT 2936#if EV_USE_PORT
2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2937 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2276#endif 2938#endif
2277#if EV_USE_KQUEUE 2939#if EV_USE_KQUEUE
2278 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);
2279#endif 2944#endif
2280#if EV_USE_EPOLL 2945#if EV_USE_EPOLL
2281 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2946 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2282#endif 2947#endif
2283#if EV_USE_POLL 2948#if EV_USE_POLL
2284 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2949 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2285#endif 2950#endif
2286#if EV_USE_SELECT 2951#if EV_USE_SELECT
2287 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2952 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2288#endif 2953#endif
2289 2954
2290 ev_prepare_init (&pending_w, pendingcb); 2955 ev_prepare_init (&pending_w, pendingcb);
2291 2956
2292#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2957#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2295#endif 2960#endif
2296 } 2961 }
2297} 2962}
2298 2963
2299/* free up a loop structure */ 2964/* free up a loop structure */
2300void ecb_cold 2965ecb_cold
2966void
2301ev_loop_destroy (EV_P) 2967ev_loop_destroy (EV_P)
2302{ 2968{
2303 int i; 2969 int i;
2304 2970
2305#if EV_MULTIPLICITY 2971#if EV_MULTIPLICITY
… …
2316 EV_INVOKE_PENDING; 2982 EV_INVOKE_PENDING;
2317 } 2983 }
2318#endif 2984#endif
2319 2985
2320#if EV_CHILD_ENABLE 2986#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev)) 2987 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2322 { 2988 {
2323 ev_ref (EV_A); /* child watcher */ 2989 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev); 2990 ev_signal_stop (EV_A_ &childev);
2325 } 2991 }
2326#endif 2992#endif
… …
2328 if (ev_is_active (&pipe_w)) 2994 if (ev_is_active (&pipe_w))
2329 { 2995 {
2330 /*ev_ref (EV_A);*/ 2996 /*ev_ref (EV_A);*/
2331 /*ev_io_stop (EV_A_ &pipe_w);*/ 2997 /*ev_io_stop (EV_A_ &pipe_w);*/
2332 2998
2333#if EV_USE_EVENTFD
2334 if (evfd >= 0)
2335 close (evfd);
2336#endif
2337
2338 if (evpipe [0] >= 0)
2339 {
2340 EV_WIN32_CLOSE_FD (evpipe [0]); 2999 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2341 EV_WIN32_CLOSE_FD (evpipe [1]); 3000 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2342 }
2343 } 3001 }
2344 3002
2345#if EV_USE_SIGNALFD 3003#if EV_USE_SIGNALFD
2346 if (ev_is_active (&sigfd_w)) 3004 if (ev_is_active (&sigfd_w))
2347 close (sigfd); 3005 close (sigfd);
… …
2354 3012
2355 if (backend_fd >= 0) 3013 if (backend_fd >= 0)
2356 close (backend_fd); 3014 close (backend_fd);
2357 3015
2358#if EV_USE_IOCP 3016#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3017 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif 3018#endif
2361#if EV_USE_PORT 3019#if EV_USE_PORT
2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2363#endif 3021#endif
2364#if EV_USE_KQUEUE 3022#if EV_USE_KQUEUE
2365 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);
2366#endif 3027#endif
2367#if EV_USE_EPOLL 3028#if EV_USE_EPOLL
2368 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3029 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2369#endif 3030#endif
2370#if EV_USE_POLL 3031#if EV_USE_POLL
2371 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3032 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2372#endif 3033#endif
2373#if EV_USE_SELECT 3034#if EV_USE_SELECT
2374 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3035 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2375#endif 3036#endif
2376 3037
2377 for (i = NUMPRI; i--; ) 3038 for (i = NUMPRI; i--; )
2378 { 3039 {
2379 array_free (pending, [i]); 3040 array_free (pending, [i]);
… …
2421 3082
2422inline_size void 3083inline_size void
2423loop_fork (EV_P) 3084loop_fork (EV_P)
2424{ 3085{
2425#if EV_USE_PORT 3086#if EV_USE_PORT
2426 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3087 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2427#endif 3088#endif
2428#if EV_USE_KQUEUE 3089#if EV_USE_KQUEUE
2429 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);
2430#endif 3094#endif
2431#if EV_USE_EPOLL 3095#if EV_USE_EPOLL
2432 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3096 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2433#endif 3097#endif
2434#if EV_USE_INOTIFY 3098#if EV_USE_INOTIFY
2435 infy_fork (EV_A); 3099 infy_fork (EV_A);
2436#endif 3100#endif
2437 3101
3102#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2438 if (ev_is_active (&pipe_w)) 3103 if (ev_is_active (&pipe_w) && postfork != 2)
2439 { 3104 {
2440 /* 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 */
2441 3106
2442 ev_ref (EV_A); 3107 ev_ref (EV_A);
2443 ev_io_stop (EV_A_ &pipe_w); 3108 ev_io_stop (EV_A_ &pipe_w);
2444 3109
2445#if EV_USE_EVENTFD
2446 if (evfd >= 0)
2447 close (evfd);
2448#endif
2449
2450 if (evpipe [0] >= 0) 3110 if (evpipe [0] >= 0)
2451 {
2452 EV_WIN32_CLOSE_FD (evpipe [0]); 3111 EV_WIN32_CLOSE_FD (evpipe [0]);
2453 EV_WIN32_CLOSE_FD (evpipe [1]);
2454 }
2455 3112
2456#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 evpipe_init (EV_A); 3113 evpipe_init (EV_A);
2458 /* now iterate over everything, in case we missed something */ 3114 /* iterate over everything, in case we missed something before */
2459 pipecb (EV_A_ &pipe_w, EV_READ); 3115 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2460#endif
2461 } 3116 }
3117#endif
2462 3118
2463 postfork = 0; 3119 postfork = 0;
2464} 3120}
2465 3121
2466#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2467 3123
3124ecb_cold
2468struct ev_loop * ecb_cold 3125struct ev_loop *
2469ev_loop_new (unsigned int flags) 3126ev_loop_new (unsigned int flags) EV_NOEXCEPT
2470{ 3127{
2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3128 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2472 3129
2473 memset (EV_A, 0, sizeof (struct ev_loop)); 3130 memset (EV_A, 0, sizeof (struct ev_loop));
2474 loop_init (EV_A_ flags); 3131 loop_init (EV_A_ flags);
… …
2481} 3138}
2482 3139
2483#endif /* multiplicity */ 3140#endif /* multiplicity */
2484 3141
2485#if EV_VERIFY 3142#if EV_VERIFY
2486static void noinline ecb_cold 3143noinline ecb_cold
3144static void
2487verify_watcher (EV_P_ W w) 3145verify_watcher (EV_P_ W w)
2488{ 3146{
2489 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));
2490 3148
2491 if (w->pending) 3149 if (w->pending)
2492 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));
2493} 3151}
2494 3152
2495static void noinline ecb_cold 3153noinline ecb_cold
3154static void
2496verify_heap (EV_P_ ANHE *heap, int N) 3155verify_heap (EV_P_ ANHE *heap, int N)
2497{ 3156{
2498 int i; 3157 int i;
2499 3158
2500 for (i = HEAP0; i < N + HEAP0; ++i) 3159 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2505 3164
2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3165 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2507 } 3166 }
2508} 3167}
2509 3168
2510static void noinline ecb_cold 3169noinline ecb_cold
3170static void
2511array_verify (EV_P_ W *ws, int cnt) 3171array_verify (EV_P_ W *ws, int cnt)
2512{ 3172{
2513 while (cnt--) 3173 while (cnt--)
2514 { 3174 {
2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3175 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2518} 3178}
2519#endif 3179#endif
2520 3180
2521#if EV_FEATURE_API 3181#if EV_FEATURE_API
2522void ecb_cold 3182void ecb_cold
2523ev_verify (EV_P) 3183ev_verify (EV_P) EV_NOEXCEPT
2524{ 3184{
2525#if EV_VERIFY 3185#if EV_VERIFY
2526 int i; 3186 int i;
2527 WL w; 3187 WL w, w2;
2528 3188
2529 assert (activecnt >= -1); 3189 assert (activecnt >= -1);
2530 3190
2531 assert (fdchangemax >= fdchangecnt); 3191 assert (fdchangemax >= fdchangecnt);
2532 for (i = 0; i < fdchangecnt; ++i) 3192 for (i = 0; i < fdchangecnt; ++i)
2533 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3193 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2534 3194
2535 assert (anfdmax >= 0); 3195 assert (anfdmax >= 0);
2536 for (i = 0; i < anfdmax; ++i) 3196 for (i = 0; i < anfdmax; ++i)
3197 {
3198 int j = 0;
3199
2537 for (w = anfds [i].head; w; w = w->next) 3200 for (w = w2 = anfds [i].head; w; w = w->next)
2538 { 3201 {
2539 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
2540 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));
2541 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));
2542 } 3212 }
3213 }
2543 3214
2544 assert (timermax >= timercnt); 3215 assert (timermax >= timercnt);
2545 verify_heap (EV_A_ timers, timercnt); 3216 verify_heap (EV_A_ timers, timercnt);
2546 3217
2547#if EV_PERIODIC_ENABLE 3218#if EV_PERIODIC_ENABLE
… …
2593#endif 3264#endif
2594} 3265}
2595#endif 3266#endif
2596 3267
2597#if EV_MULTIPLICITY 3268#if EV_MULTIPLICITY
3269ecb_cold
2598struct ev_loop * ecb_cold 3270struct ev_loop *
2599#else 3271#else
2600int 3272int
2601#endif 3273#endif
2602ev_default_loop (unsigned int flags) 3274ev_default_loop (unsigned int flags) EV_NOEXCEPT
2603{ 3275{
2604 if (!ev_default_loop_ptr) 3276 if (!ev_default_loop_ptr)
2605 { 3277 {
2606#if EV_MULTIPLICITY 3278#if EV_MULTIPLICITY
2607 EV_P = ev_default_loop_ptr = &default_loop_struct; 3279 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2626 3298
2627 return ev_default_loop_ptr; 3299 return ev_default_loop_ptr;
2628} 3300}
2629 3301
2630void 3302void
2631ev_loop_fork (EV_P) 3303ev_loop_fork (EV_P) EV_NOEXCEPT
2632{ 3304{
2633 postfork = 1; /* must be in line with ev_default_fork */ 3305 postfork = 1;
2634} 3306}
2635 3307
2636/*****************************************************************************/ 3308/*****************************************************************************/
2637 3309
2638void 3310void
… …
2640{ 3312{
2641 EV_CB_INVOKE ((W)w, revents); 3313 EV_CB_INVOKE ((W)w, revents);
2642} 3314}
2643 3315
2644unsigned int 3316unsigned int
2645ev_pending_count (EV_P) 3317ev_pending_count (EV_P) EV_NOEXCEPT
2646{ 3318{
2647 int pri; 3319 int pri;
2648 unsigned int count = 0; 3320 unsigned int count = 0;
2649 3321
2650 for (pri = NUMPRI; pri--; ) 3322 for (pri = NUMPRI; pri--; )
2651 count += pendingcnt [pri]; 3323 count += pendingcnt [pri];
2652 3324
2653 return count; 3325 return count;
2654} 3326}
2655 3327
2656void noinline 3328noinline
3329void
2657ev_invoke_pending (EV_P) 3330ev_invoke_pending (EV_P)
2658{ 3331{
2659 int pri; 3332 pendingpri = NUMPRI;
2660 3333
2661 for (pri = NUMPRI; pri--; ) 3334 do
3335 {
3336 --pendingpri;
3337
3338 /* pendingpri possibly gets modified in the inner loop */
2662 while (pendingcnt [pri]) 3339 while (pendingcnt [pendingpri])
2663 { 3340 {
2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3341 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2665 3342
2666 p->w->pending = 0; 3343 p->w->pending = 0;
2667 EV_CB_INVOKE (p->w, p->events); 3344 EV_CB_INVOKE (p->w, p->events);
2668 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
2669 } 3346 }
3347 }
3348 while (pendingpri);
2670} 3349}
2671 3350
2672#if EV_IDLE_ENABLE 3351#if EV_IDLE_ENABLE
2673/* make idle watchers pending. this handles the "call-idle */ 3352/* make idle watchers pending. this handles the "call-idle */
2674/* only when higher priorities are idle" logic */ 3353/* only when higher priorities are idle" logic */
… …
2732 } 3411 }
2733} 3412}
2734 3413
2735#if EV_PERIODIC_ENABLE 3414#if EV_PERIODIC_ENABLE
2736 3415
2737static void noinline 3416noinline
3417static void
2738periodic_recalc (EV_P_ ev_periodic *w) 3418periodic_recalc (EV_P_ ev_periodic *w)
2739{ 3419{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3420 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 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);
2742 3422
… …
2764{ 3444{
2765 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2766 3446
2767 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3447 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2768 { 3448 {
2769 int feed_count = 0;
2770
2771 do 3449 do
2772 { 3450 {
2773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2774 3452
2775 /*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)));*/
… …
2802 } 3480 }
2803} 3481}
2804 3482
2805/* simply recalculate all periodics */ 3483/* simply recalculate all periodics */
2806/* 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? */
2807static void noinline ecb_cold 3485noinline ecb_cold
3486static void
2808periodics_reschedule (EV_P) 3487periodics_reschedule (EV_P)
2809{ 3488{
2810 int i; 3489 int i;
2811 3490
2812 /* adjust periodics after time jump */ 3491 /* adjust periodics after time jump */
… …
2825 reheap (periodics, periodiccnt); 3504 reheap (periodics, periodiccnt);
2826} 3505}
2827#endif 3506#endif
2828 3507
2829/* adjust all timers by a given offset */ 3508/* adjust all timers by a given offset */
2830static void noinline ecb_cold 3509noinline ecb_cold
3510static void
2831timers_reschedule (EV_P_ ev_tstamp adjust) 3511timers_reschedule (EV_P_ ev_tstamp adjust)
2832{ 3512{
2833 int i; 3513 int i;
2834 3514
2835 for (i = 0; i < timercnt; ++i) 3515 for (i = 0; i < timercnt; ++i)
… …
2909 3589
2910 mn_now = ev_rt_now; 3590 mn_now = ev_rt_now;
2911 } 3591 }
2912} 3592}
2913 3593
2914void 3594int
2915ev_run (EV_P_ int flags) 3595ev_run (EV_P_ int flags)
2916{ 3596{
2917#if EV_FEATURE_API 3597#if EV_FEATURE_API
2918 ++loop_depth; 3598 ++loop_depth;
2919#endif 3599#endif
… …
3034 backend_poll (EV_A_ waittime); 3714 backend_poll (EV_A_ waittime);
3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3715 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036 3716
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3717 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038 3718
3719 ECB_MEMORY_FENCE_ACQUIRE;
3039 if (pipe_write_skipped) 3720 if (pipe_write_skipped)
3040 { 3721 {
3041 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)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3723 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 } 3724 }
… …
3076 loop_done = EVBREAK_CANCEL; 3757 loop_done = EVBREAK_CANCEL;
3077 3758
3078#if EV_FEATURE_API 3759#if EV_FEATURE_API
3079 --loop_depth; 3760 --loop_depth;
3080#endif 3761#endif
3081}
3082 3762
3763 return activecnt;
3764}
3765
3083void 3766void
3084ev_break (EV_P_ int how) 3767ev_break (EV_P_ int how) EV_NOEXCEPT
3085{ 3768{
3086 loop_done = how; 3769 loop_done = how;
3087} 3770}
3088 3771
3089void 3772void
3090ev_ref (EV_P) 3773ev_ref (EV_P) EV_NOEXCEPT
3091{ 3774{
3092 ++activecnt; 3775 ++activecnt;
3093} 3776}
3094 3777
3095void 3778void
3096ev_unref (EV_P) 3779ev_unref (EV_P) EV_NOEXCEPT
3097{ 3780{
3098 --activecnt; 3781 --activecnt;
3099} 3782}
3100 3783
3101void 3784void
3102ev_now_update (EV_P) 3785ev_now_update (EV_P) EV_NOEXCEPT
3103{ 3786{
3104 time_update (EV_A_ 1e100); 3787 time_update (EV_A_ 1e100);
3105} 3788}
3106 3789
3107void 3790void
3108ev_suspend (EV_P) 3791ev_suspend (EV_P) EV_NOEXCEPT
3109{ 3792{
3110 ev_now_update (EV_A); 3793 ev_now_update (EV_A);
3111} 3794}
3112 3795
3113void 3796void
3114ev_resume (EV_P) 3797ev_resume (EV_P) EV_NOEXCEPT
3115{ 3798{
3116 ev_tstamp mn_prev = mn_now; 3799 ev_tstamp mn_prev = mn_now;
3117 3800
3118 ev_now_update (EV_A); 3801 ev_now_update (EV_A);
3119 timers_reschedule (EV_A_ mn_now - mn_prev); 3802 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3158 w->pending = 0; 3841 w->pending = 0;
3159 } 3842 }
3160} 3843}
3161 3844
3162int 3845int
3163ev_clear_pending (EV_P_ void *w) 3846ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3164{ 3847{
3165 W w_ = (W)w; 3848 W w_ = (W)w;
3166 int pending = w_->pending; 3849 int pending = w_->pending;
3167 3850
3168 if (expect_true (pending)) 3851 if (expect_true (pending))
… …
3200 w->active = 0; 3883 w->active = 0;
3201} 3884}
3202 3885
3203/*****************************************************************************/ 3886/*****************************************************************************/
3204 3887
3205void noinline 3888noinline
3889void
3206ev_io_start (EV_P_ ev_io *w) 3890ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3207{ 3891{
3208 int fd = w->fd; 3892 int fd = w->fd;
3209 3893
3210 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
3211 return; 3895 return;
… …
3214 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))));
3215 3899
3216 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
3217 3901
3218 ev_start (EV_A_ (W)w, 1); 3902 ev_start (EV_A_ (W)w, 1);
3219 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3903 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3220 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));
3221 3908
3222 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);
3223 w->events &= ~EV__IOFDSET; 3910 w->events &= ~EV__IOFDSET;
3224 3911
3225 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
3226} 3913}
3227 3914
3228void noinline 3915noinline
3916void
3229ev_io_stop (EV_P_ ev_io *w) 3917ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3230{ 3918{
3231 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
3232 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
3233 return; 3921 return;
3234 3922
… …
3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3930 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3243 3931
3244 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3245} 3933}
3246 3934
3247void noinline 3935noinline
3936void
3248ev_timer_start (EV_P_ ev_timer *w) 3937ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3249{ 3938{
3250 if (expect_false (ev_is_active (w))) 3939 if (expect_false (ev_is_active (w)))
3251 return; 3940 return;
3252 3941
3253 ev_at (w) += mn_now; 3942 ev_at (w) += mn_now;
… …
3256 3945
3257 EV_FREQUENT_CHECK; 3946 EV_FREQUENT_CHECK;
3258 3947
3259 ++timercnt; 3948 ++timercnt;
3260 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3949 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3261 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3950 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3262 ANHE_w (timers [ev_active (w)]) = (WT)w; 3951 ANHE_w (timers [ev_active (w)]) = (WT)w;
3263 ANHE_at_cache (timers [ev_active (w)]); 3952 ANHE_at_cache (timers [ev_active (w)]);
3264 upheap (timers, ev_active (w)); 3953 upheap (timers, ev_active (w));
3265 3954
3266 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
3267 3956
3268 /*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));*/
3269} 3958}
3270 3959
3271void noinline 3960noinline
3961void
3272ev_timer_stop (EV_P_ ev_timer *w) 3962ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3273{ 3963{
3274 clear_pending (EV_A_ (W)w); 3964 clear_pending (EV_A_ (W)w);
3275 if (expect_false (!ev_is_active (w))) 3965 if (expect_false (!ev_is_active (w)))
3276 return; 3966 return;
3277 3967
… …
3296 ev_stop (EV_A_ (W)w); 3986 ev_stop (EV_A_ (W)w);
3297 3987
3298 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3299} 3989}
3300 3990
3301void noinline 3991noinline
3992void
3302ev_timer_again (EV_P_ ev_timer *w) 3993ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3303{ 3994{
3304 EV_FREQUENT_CHECK; 3995 EV_FREQUENT_CHECK;
3305 3996
3306 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
3307 3998
… …
3324 4015
3325 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
3326} 4017}
3327 4018
3328ev_tstamp 4019ev_tstamp
3329ev_timer_remaining (EV_P_ ev_timer *w) 4020ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3330{ 4021{
3331 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4022 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3332} 4023}
3333 4024
3334#if EV_PERIODIC_ENABLE 4025#if EV_PERIODIC_ENABLE
3335void noinline 4026noinline
4027void
3336ev_periodic_start (EV_P_ ev_periodic *w) 4028ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3337{ 4029{
3338 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
3339 return; 4031 return;
3340 4032
3341 if (w->reschedule_cb) 4033 if (w->reschedule_cb)
… …
3350 4042
3351 EV_FREQUENT_CHECK; 4043 EV_FREQUENT_CHECK;
3352 4044
3353 ++periodiccnt; 4045 ++periodiccnt;
3354 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4046 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3355 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4047 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3356 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4048 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3357 ANHE_at_cache (periodics [ev_active (w)]); 4049 ANHE_at_cache (periodics [ev_active (w)]);
3358 upheap (periodics, ev_active (w)); 4050 upheap (periodics, ev_active (w));
3359 4051
3360 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3361 4053
3362 /*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));*/
3363} 4055}
3364 4056
3365void noinline 4057noinline
4058void
3366ev_periodic_stop (EV_P_ ev_periodic *w) 4059ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3367{ 4060{
3368 clear_pending (EV_A_ (W)w); 4061 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 4062 if (expect_false (!ev_is_active (w)))
3370 return; 4063 return;
3371 4064
… …
3388 ev_stop (EV_A_ (W)w); 4081 ev_stop (EV_A_ (W)w);
3389 4082
3390 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
3391} 4084}
3392 4085
3393void noinline 4086noinline
4087void
3394ev_periodic_again (EV_P_ ev_periodic *w) 4088ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3395{ 4089{
3396 /* TODO: use adjustheap and recalculation */ 4090 /* TODO: use adjustheap and recalculation */
3397 ev_periodic_stop (EV_A_ w); 4091 ev_periodic_stop (EV_A_ w);
3398 ev_periodic_start (EV_A_ w); 4092 ev_periodic_start (EV_A_ w);
3399} 4093}
… …
3403# define SA_RESTART 0 4097# define SA_RESTART 0
3404#endif 4098#endif
3405 4099
3406#if EV_SIGNAL_ENABLE 4100#if EV_SIGNAL_ENABLE
3407 4101
3408void noinline 4102noinline
4103void
3409ev_signal_start (EV_P_ ev_signal *w) 4104ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3410{ 4105{
3411 if (expect_false (ev_is_active (w))) 4106 if (expect_false (ev_is_active (w)))
3412 return; 4107 return;
3413 4108
3414 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));
… …
3416#if EV_MULTIPLICITY 4111#if EV_MULTIPLICITY
3417 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",
3418 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4113 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3419 4114
3420 signals [w->signum - 1].loop = EV_A; 4115 signals [w->signum - 1].loop = EV_A;
4116 ECB_MEMORY_FENCE_RELEASE;
3421#endif 4117#endif
3422 4118
3423 EV_FREQUENT_CHECK; 4119 EV_FREQUENT_CHECK;
3424 4120
3425#if EV_USE_SIGNALFD 4121#if EV_USE_SIGNALFD
… …
3484 } 4180 }
3485 4181
3486 EV_FREQUENT_CHECK; 4182 EV_FREQUENT_CHECK;
3487} 4183}
3488 4184
3489void noinline 4185noinline
4186void
3490ev_signal_stop (EV_P_ ev_signal *w) 4187ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3491{ 4188{
3492 clear_pending (EV_A_ (W)w); 4189 clear_pending (EV_A_ (W)w);
3493 if (expect_false (!ev_is_active (w))) 4190 if (expect_false (!ev_is_active (w)))
3494 return; 4191 return;
3495 4192
… …
3526#endif 4223#endif
3527 4224
3528#if EV_CHILD_ENABLE 4225#if EV_CHILD_ENABLE
3529 4226
3530void 4227void
3531ev_child_start (EV_P_ ev_child *w) 4228ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3532{ 4229{
3533#if EV_MULTIPLICITY 4230#if EV_MULTIPLICITY
3534 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));
3535#endif 4232#endif
3536 if (expect_false (ev_is_active (w))) 4233 if (expect_false (ev_is_active (w)))
… …
3543 4240
3544 EV_FREQUENT_CHECK; 4241 EV_FREQUENT_CHECK;
3545} 4242}
3546 4243
3547void 4244void
3548ev_child_stop (EV_P_ ev_child *w) 4245ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3549{ 4246{
3550 clear_pending (EV_A_ (W)w); 4247 clear_pending (EV_A_ (W)w);
3551 if (expect_false (!ev_is_active (w))) 4248 if (expect_false (!ev_is_active (w)))
3552 return; 4249 return;
3553 4250
… …
3570 4267
3571#define DEF_STAT_INTERVAL 5.0074891 4268#define DEF_STAT_INTERVAL 5.0074891
3572#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4269#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3573#define MIN_STAT_INTERVAL 0.1074891 4270#define MIN_STAT_INTERVAL 0.1074891
3574 4271
3575static 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);
3576 4273
3577#if EV_USE_INOTIFY 4274#if EV_USE_INOTIFY
3578 4275
3579/* 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 */
3580# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4277# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3581 4278
3582static void noinline 4279noinline
4280static void
3583infy_add (EV_P_ ev_stat *w) 4281infy_add (EV_P_ ev_stat *w)
3584{ 4282{
3585 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);
3586 4287
3587 if (w->wd >= 0) 4288 if (w->wd >= 0)
3588 { 4289 {
3589 struct statfs sfs; 4290 struct statfs sfs;
3590 4291
… …
3594 4295
3595 if (!fs_2625) 4296 if (!fs_2625)
3596 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4297 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3597 else if (!statfs (w->path, &sfs) 4298 else if (!statfs (w->path, &sfs)
3598 && (sfs.f_type == 0x1373 /* devfs */ 4299 && (sfs.f_type == 0x1373 /* devfs */
4300 || sfs.f_type == 0x4006 /* fat */
4301 || sfs.f_type == 0x4d44 /* msdos */
3599 || 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 */
3600 || sfs.f_type == 0x3153464a /* jfs */ 4306 || sfs.f_type == 0x3153464a /* jfs */
4307 || sfs.f_type == 0x9123683e /* btrfs */
3601 || sfs.f_type == 0x52654973 /* reiser3 */ 4308 || sfs.f_type == 0x52654973 /* reiser3 */
3602 || sfs.f_type == 0x01021994 /* tempfs */ 4309 || sfs.f_type == 0x01021994 /* tmpfs */
3603 || sfs.f_type == 0x58465342 /* xfs */)) 4310 || sfs.f_type == 0x58465342 /* xfs */))
3604 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4311 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3605 else 4312 else
3606 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 */
3607 } 4314 }
… …
3642 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4349 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3643 ev_timer_again (EV_A_ &w->timer); 4350 ev_timer_again (EV_A_ &w->timer);
3644 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4351 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3645} 4352}
3646 4353
3647static void noinline 4354noinline
4355static void
3648infy_del (EV_P_ ev_stat *w) 4356infy_del (EV_P_ ev_stat *w)
3649{ 4357{
3650 int slot; 4358 int slot;
3651 int wd = w->wd; 4359 int wd = w->wd;
3652 4360
… …
3659 4367
3660 /* remove this watcher, if others are watching it, they will rearm */ 4368 /* remove this watcher, if others are watching it, they will rearm */
3661 inotify_rm_watch (fs_fd, wd); 4369 inotify_rm_watch (fs_fd, wd);
3662} 4370}
3663 4371
3664static void noinline 4372noinline
4373static void
3665infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4374infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3666{ 4375{
3667 if (slot < 0) 4376 if (slot < 0)
3668 /* overflow, need to check for all hash slots */ 4377 /* overflow, need to check for all hash slots */
3669 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4378 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3705 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4414 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3706 ofs += sizeof (struct inotify_event) + ev->len; 4415 ofs += sizeof (struct inotify_event) + ev->len;
3707 } 4416 }
3708} 4417}
3709 4418
3710inline_size void ecb_cold 4419inline_size ecb_cold
4420void
3711ev_check_2625 (EV_P) 4421ev_check_2625 (EV_P)
3712{ 4422{
3713 /* kernels < 2.6.25 are borked 4423 /* kernels < 2.6.25 are borked
3714 * 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
3715 */ 4425 */
… …
3720} 4430}
3721 4431
3722inline_size int 4432inline_size int
3723infy_newfd (void) 4433infy_newfd (void)
3724{ 4434{
3725#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4435#if defined IN_CLOEXEC && defined IN_NONBLOCK
3726 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4436 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3727 if (fd >= 0) 4437 if (fd >= 0)
3728 return fd; 4438 return fd;
3729#endif 4439#endif
3730 return inotify_init (); 4440 return inotify_init ();
… …
3805#else 4515#else
3806# define EV_LSTAT(p,b) lstat (p, b) 4516# define EV_LSTAT(p,b) lstat (p, b)
3807#endif 4517#endif
3808 4518
3809void 4519void
3810ev_stat_stat (EV_P_ ev_stat *w) 4520ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3811{ 4521{
3812 if (lstat (w->path, &w->attr) < 0) 4522 if (lstat (w->path, &w->attr) < 0)
3813 w->attr.st_nlink = 0; 4523 w->attr.st_nlink = 0;
3814 else if (!w->attr.st_nlink) 4524 else if (!w->attr.st_nlink)
3815 w->attr.st_nlink = 1; 4525 w->attr.st_nlink = 1;
3816} 4526}
3817 4527
3818static void noinline 4528noinline
4529static void
3819stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4530stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3820{ 4531{
3821 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4532 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3822 4533
3823 ev_statdata prev = w->attr; 4534 ev_statdata prev = w->attr;
… …
3854 ev_feed_event (EV_A_ w, EV_STAT); 4565 ev_feed_event (EV_A_ w, EV_STAT);
3855 } 4566 }
3856} 4567}
3857 4568
3858void 4569void
3859ev_stat_start (EV_P_ ev_stat *w) 4570ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3860{ 4571{
3861 if (expect_false (ev_is_active (w))) 4572 if (expect_false (ev_is_active (w)))
3862 return; 4573 return;
3863 4574
3864 ev_stat_stat (EV_A_ w); 4575 ev_stat_stat (EV_A_ w);
… …
3885 4596
3886 EV_FREQUENT_CHECK; 4597 EV_FREQUENT_CHECK;
3887} 4598}
3888 4599
3889void 4600void
3890ev_stat_stop (EV_P_ ev_stat *w) 4601ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3891{ 4602{
3892 clear_pending (EV_A_ (W)w); 4603 clear_pending (EV_A_ (W)w);
3893 if (expect_false (!ev_is_active (w))) 4604 if (expect_false (!ev_is_active (w)))
3894 return; 4605 return;
3895 4606
… …
3911} 4622}
3912#endif 4623#endif
3913 4624
3914#if EV_IDLE_ENABLE 4625#if EV_IDLE_ENABLE
3915void 4626void
3916ev_idle_start (EV_P_ ev_idle *w) 4627ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3917{ 4628{
3918 if (expect_false (ev_is_active (w))) 4629 if (expect_false (ev_is_active (w)))
3919 return; 4630 return;
3920 4631
3921 pri_adjust (EV_A_ (W)w); 4632 pri_adjust (EV_A_ (W)w);
… …
3926 int active = ++idlecnt [ABSPRI (w)]; 4637 int active = ++idlecnt [ABSPRI (w)];
3927 4638
3928 ++idleall; 4639 ++idleall;
3929 ev_start (EV_A_ (W)w, active); 4640 ev_start (EV_A_ (W)w, active);
3930 4641
3931 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);
3932 idles [ABSPRI (w)][active - 1] = w; 4643 idles [ABSPRI (w)][active - 1] = w;
3933 } 4644 }
3934 4645
3935 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3936} 4647}
3937 4648
3938void 4649void
3939ev_idle_stop (EV_P_ ev_idle *w) 4650ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3940{ 4651{
3941 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3942 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3943 return; 4654 return;
3944 4655
… …
3958} 4669}
3959#endif 4670#endif
3960 4671
3961#if EV_PREPARE_ENABLE 4672#if EV_PREPARE_ENABLE
3962void 4673void
3963ev_prepare_start (EV_P_ ev_prepare *w) 4674ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3964{ 4675{
3965 if (expect_false (ev_is_active (w))) 4676 if (expect_false (ev_is_active (w)))
3966 return; 4677 return;
3967 4678
3968 EV_FREQUENT_CHECK; 4679 EV_FREQUENT_CHECK;
3969 4680
3970 ev_start (EV_A_ (W)w, ++preparecnt); 4681 ev_start (EV_A_ (W)w, ++preparecnt);
3971 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4682 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3972 prepares [preparecnt - 1] = w; 4683 prepares [preparecnt - 1] = w;
3973 4684
3974 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3975} 4686}
3976 4687
3977void 4688void
3978ev_prepare_stop (EV_P_ ev_prepare *w) 4689ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3979{ 4690{
3980 clear_pending (EV_A_ (W)w); 4691 clear_pending (EV_A_ (W)w);
3981 if (expect_false (!ev_is_active (w))) 4692 if (expect_false (!ev_is_active (w)))
3982 return; 4693 return;
3983 4694
… …
3996} 4707}
3997#endif 4708#endif
3998 4709
3999#if EV_CHECK_ENABLE 4710#if EV_CHECK_ENABLE
4000void 4711void
4001ev_check_start (EV_P_ ev_check *w) 4712ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4002{ 4713{
4003 if (expect_false (ev_is_active (w))) 4714 if (expect_false (ev_is_active (w)))
4004 return; 4715 return;
4005 4716
4006 EV_FREQUENT_CHECK; 4717 EV_FREQUENT_CHECK;
4007 4718
4008 ev_start (EV_A_ (W)w, ++checkcnt); 4719 ev_start (EV_A_ (W)w, ++checkcnt);
4009 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4720 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4010 checks [checkcnt - 1] = w; 4721 checks [checkcnt - 1] = w;
4011 4722
4012 EV_FREQUENT_CHECK; 4723 EV_FREQUENT_CHECK;
4013} 4724}
4014 4725
4015void 4726void
4016ev_check_stop (EV_P_ ev_check *w) 4727ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4017{ 4728{
4018 clear_pending (EV_A_ (W)w); 4729 clear_pending (EV_A_ (W)w);
4019 if (expect_false (!ev_is_active (w))) 4730 if (expect_false (!ev_is_active (w)))
4020 return; 4731 return;
4021 4732
… …
4033 EV_FREQUENT_CHECK; 4744 EV_FREQUENT_CHECK;
4034} 4745}
4035#endif 4746#endif
4036 4747
4037#if EV_EMBED_ENABLE 4748#if EV_EMBED_ENABLE
4038void noinline 4749noinline
4750void
4039ev_embed_sweep (EV_P_ ev_embed *w) 4751ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4040{ 4752{
4041 ev_run (w->other, EVRUN_NOWAIT); 4753 ev_run (w->other, EVRUN_NOWAIT);
4042} 4754}
4043 4755
4044static void 4756static void
… …
4092 ev_idle_stop (EV_A_ idle); 4804 ev_idle_stop (EV_A_ idle);
4093} 4805}
4094#endif 4806#endif
4095 4807
4096void 4808void
4097ev_embed_start (EV_P_ ev_embed *w) 4809ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4098{ 4810{
4099 if (expect_false (ev_is_active (w))) 4811 if (expect_false (ev_is_active (w)))
4100 return; 4812 return;
4101 4813
4102 { 4814 {
… …
4123 4835
4124 EV_FREQUENT_CHECK; 4836 EV_FREQUENT_CHECK;
4125} 4837}
4126 4838
4127void 4839void
4128ev_embed_stop (EV_P_ ev_embed *w) 4840ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4129{ 4841{
4130 clear_pending (EV_A_ (W)w); 4842 clear_pending (EV_A_ (W)w);
4131 if (expect_false (!ev_is_active (w))) 4843 if (expect_false (!ev_is_active (w)))
4132 return; 4844 return;
4133 4845
… …
4143} 4855}
4144#endif 4856#endif
4145 4857
4146#if EV_FORK_ENABLE 4858#if EV_FORK_ENABLE
4147void 4859void
4148ev_fork_start (EV_P_ ev_fork *w) 4860ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4149{ 4861{
4150 if (expect_false (ev_is_active (w))) 4862 if (expect_false (ev_is_active (w)))
4151 return; 4863 return;
4152 4864
4153 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
4154 4866
4155 ev_start (EV_A_ (W)w, ++forkcnt); 4867 ev_start (EV_A_ (W)w, ++forkcnt);
4156 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4868 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4157 forks [forkcnt - 1] = w; 4869 forks [forkcnt - 1] = w;
4158 4870
4159 EV_FREQUENT_CHECK; 4871 EV_FREQUENT_CHECK;
4160} 4872}
4161 4873
4162void 4874void
4163ev_fork_stop (EV_P_ ev_fork *w) 4875ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4164{ 4876{
4165 clear_pending (EV_A_ (W)w); 4877 clear_pending (EV_A_ (W)w);
4166 if (expect_false (!ev_is_active (w))) 4878 if (expect_false (!ev_is_active (w)))
4167 return; 4879 return;
4168 4880
… …
4181} 4893}
4182#endif 4894#endif
4183 4895
4184#if EV_CLEANUP_ENABLE 4896#if EV_CLEANUP_ENABLE
4185void 4897void
4186ev_cleanup_start (EV_P_ ev_cleanup *w) 4898ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4187{ 4899{
4188 if (expect_false (ev_is_active (w))) 4900 if (expect_false (ev_is_active (w)))
4189 return; 4901 return;
4190 4902
4191 EV_FREQUENT_CHECK; 4903 EV_FREQUENT_CHECK;
4192 4904
4193 ev_start (EV_A_ (W)w, ++cleanupcnt); 4905 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4906 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4195 cleanups [cleanupcnt - 1] = w; 4907 cleanups [cleanupcnt - 1] = w;
4196 4908
4197 /* cleanup watchers should never keep a refcount on the loop */ 4909 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A); 4910 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK; 4911 EV_FREQUENT_CHECK;
4200} 4912}
4201 4913
4202void 4914void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w) 4915ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4204{ 4916{
4205 clear_pending (EV_A_ (W)w); 4917 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4918 if (expect_false (!ev_is_active (w)))
4207 return; 4919 return;
4208 4920
… …
4222} 4934}
4223#endif 4935#endif
4224 4936
4225#if EV_ASYNC_ENABLE 4937#if EV_ASYNC_ENABLE
4226void 4938void
4227ev_async_start (EV_P_ ev_async *w) 4939ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4228{ 4940{
4229 if (expect_false (ev_is_active (w))) 4941 if (expect_false (ev_is_active (w)))
4230 return; 4942 return;
4231 4943
4232 w->sent = 0; 4944 w->sent = 0;
… …
4234 evpipe_init (EV_A); 4946 evpipe_init (EV_A);
4235 4947
4236 EV_FREQUENT_CHECK; 4948 EV_FREQUENT_CHECK;
4237 4949
4238 ev_start (EV_A_ (W)w, ++asynccnt); 4950 ev_start (EV_A_ (W)w, ++asynccnt);
4239 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4951 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4240 asyncs [asynccnt - 1] = w; 4952 asyncs [asynccnt - 1] = w;
4241 4953
4242 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
4243} 4955}
4244 4956
4245void 4957void
4246ev_async_stop (EV_P_ ev_async *w) 4958ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4247{ 4959{
4248 clear_pending (EV_A_ (W)w); 4960 clear_pending (EV_A_ (W)w);
4249 if (expect_false (!ev_is_active (w))) 4961 if (expect_false (!ev_is_active (w)))
4250 return; 4962 return;
4251 4963
… …
4262 4974
4263 EV_FREQUENT_CHECK; 4975 EV_FREQUENT_CHECK;
4264} 4976}
4265 4977
4266void 4978void
4267ev_async_send (EV_P_ ev_async *w) 4979ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 4980{
4269 w->sent = 1; 4981 w->sent = 1;
4270 evpipe_write (EV_A_ &async_pending); 4982 evpipe_write (EV_A_ &async_pending);
4271} 4983}
4272#endif 4984#endif
… …
4309 5021
4310 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));
4311} 5023}
4312 5024
4313void 5025void
4314ev_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
4315{ 5027{
4316 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));
4317
4318 if (expect_false (!once))
4319 {
4320 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4321 return;
4322 }
4323 5029
4324 once->cb = cb; 5030 once->cb = cb;
4325 once->arg = arg; 5031 once->arg = arg;
4326 5032
4327 ev_init (&once->io, once_cb_io); 5033 ev_init (&once->io, once_cb_io);
… …
4340} 5046}
4341 5047
4342/*****************************************************************************/ 5048/*****************************************************************************/
4343 5049
4344#if EV_WALK_ENABLE 5050#if EV_WALK_ENABLE
4345void ecb_cold 5051ecb_cold
5052void
4346ev_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
4347{ 5054{
4348 int i, j; 5055 int i, j;
4349 ev_watcher_list *wl, *wn; 5056 ev_watcher_list *wl, *wn;
4350 5057
4351 if (types & (EV_IO | EV_EMBED)) 5058 if (types & (EV_IO | EV_EMBED))

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