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Comparing libev/ev.c (file contents):
Revision 1.412 by root, Wed Feb 22 01:53:00 2012 UTC vs.
Revision 1.491 by root, Thu Jun 20 23:14:53 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 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
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
201# include <sys/wait.h> 220# include <sys/wait.h>
202# include <unistd.h> 221# include <unistd.h>
203#else 222#else
204# include <io.h> 223# include <io.h>
205# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
206# include <windows.h> 226# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
209# endif 229# endif
210# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
211#endif 231#endif
212 232
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
222 234
223/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 236#if defined EV_NSIG
225/* use what's provided */ 237/* use what's provided */
226#elif defined (NSIG) 238#elif defined NSIG
227# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 240#elif defined _NSIG
229# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 242#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 244#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 248#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 250#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 254#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 256#else
245# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 258#endif
250 259
251#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
253#endif 262#endif
254 263
255#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 267# else
259# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
260# endif 269# endif
261#endif 270#endif
262 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
263#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 284# else
267# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
268# endif 286# endif
269#endif 287#endif
… …
306 324
307#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 326# define EV_USE_PORT 0
309#endif 327#endif
310 328
329#ifndef EV_USE_LINUXAIO
330# define EV_USE_LINUXAIO 0
331#endif
332
311#ifndef EV_USE_INOTIFY 333#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 335# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 336# else
315# define EV_USE_INOTIFY 0 337# define EV_USE_INOTIFY 0
… …
356 378
357#ifndef EV_HEAP_CACHE_AT 379#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 380# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 381#endif
360 382
383#ifdef __ANDROID__
384/* supposedly, android doesn't typedef fd_mask */
385# undef EV_USE_SELECT
386# define EV_USE_SELECT 0
387/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
388# undef EV_USE_CLOCK_SYSCALL
389# define EV_USE_CLOCK_SYSCALL 0
390#endif
391
392/* aix's poll.h seems to cause lots of trouble */
393#ifdef _AIX
394/* AIX has a completely broken poll.h header */
395# undef EV_USE_POLL
396# define EV_USE_POLL 0
397#endif
398
399#if EV_USE_LINUXAIO
400# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
401#endif
402
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 406# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
369# else 411# else
… …
372# endif 414# endif
373#endif 415#endif
374 416
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 418
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
386#endif 422#endif
387 423
… …
395# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
396#endif 432#endif
397 433
398#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
402# endif 446# endif
403#endif 447#endif
404 448
405#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
406# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
412# endif 456# endif
413#endif
414
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif 457#endif
418 458
419#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421# include <stdint.h> 461# include <stdint.h>
… …
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
480/* 520/*
481 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
482 * 522 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 525 * All rights reserved.
486 * 526 *
487 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
507 */ 558 */
508 559
509#ifndef ECB_H 560#ifndef ECB_H
510#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010005
511 565
512#ifdef _WIN32 566#ifdef _WIN32
513 typedef signed char int8_t; 567 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
515 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
521 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
525 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
526#else 589#else
527 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
528#endif 608#endif
529 609
530/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 613 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 614 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 615 * an issue with that they should have done it right in the first place.
536 */ 616 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
540 #else 619#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
543#endif 662#endif
544 663
545/*****************************************************************************/ 664/*****************************************************************************/
546 665
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 668
550#if ECB_NO_THREADS 669#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 670 #define ECB_NO_SMP 1
552#endif 671#endif
553 672
554#if ECB_NO_THREADS || ECB_NO_SMP 673#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 675#endif
557 676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
558#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__ 688 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 690 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 691 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 692 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 696 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
698 #elif defined __ARM_ARCH_2__ \
699 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
700 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
701 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
702 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
703 || defined __ARM_ARCH_5TEJ__
704 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 705 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 706 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
707 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 708 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 709 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 710 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 711 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 712 #elif __aarch64__
713 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
714 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 716 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 717 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 718 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__) 720 #elif defined __mips__
721 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
722 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
724 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 725 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
726 #elif defined __hppa__
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
728 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
729 #elif defined __ia64__
730 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
731 #elif defined __m68k__
732 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
733 #elif defined __m88k__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
735 #elif defined __sh__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 737 #endif
585 #endif 738 #endif
586#endif 739#endif
587 740
588#ifndef ECB_MEMORY_FENCE 741#ifndef ECB_MEMORY_FENCE
742 #if ECB_GCC_VERSION(4,7)
743 /* see comment below (stdatomic.h) about the C11 memory model. */
744 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
745 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
746 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
747
748 #elif ECB_CLANG_EXTENSION(c_atomic)
749 /* see comment below (stdatomic.h) about the C11 memory model. */
750 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
751 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
752 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
753
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 754 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 755 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 756 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 757 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
758 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
759 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
760 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
761 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 762 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 763 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 764 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 765 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 766 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32) 767 #elif defined _WIN32
599 #include <WinNT.h> 768 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 769 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 770 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 771 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 772 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 773 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 774 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
775 #elif __xlC__
776 #define ECB_MEMORY_FENCE __sync ()
777 #endif
778#endif
779
780#ifndef ECB_MEMORY_FENCE
781 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
782 /* we assume that these memory fences work on all variables/all memory accesses, */
783 /* not just C11 atomics and atomic accesses */
784 #include <stdatomic.h>
785 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
786 /* any fence other than seq_cst, which isn't very efficient for us. */
787 /* Why that is, we don't know - either the C11 memory model is quite useless */
788 /* for most usages, or gcc and clang have a bug */
789 /* I *currently* lean towards the latter, and inefficiently implement */
790 /* all three of ecb's fences as a seq_cst fence */
791 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
792 /* for all __atomic_thread_fence's except seq_cst */
793 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
606 #endif 794 #endif
607#endif 795#endif
608 796
609#ifndef ECB_MEMORY_FENCE 797#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS 798 #if !ECB_AVOID_PTHREADS
… …
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 810 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 811 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif 812 #endif
625#endif 813#endif
626 814
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 815#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 816 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif 817#endif
630 818
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 819#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif 821#endif
634 822
635/*****************************************************************************/ 823/*****************************************************************************/
636 824
637#define ECB_C99 (__STDC_VERSION__ >= 199901L) 825#if ECB_CPP
638
639#if __cplusplus
640 #define ecb_inline static inline 826 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5) 827#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__ 828 #define ecb_inline static __inline__
643#elif ECB_C99 829#elif ECB_C99
644 #define ecb_inline static inline 830 #define ecb_inline static inline
… …
658 844
659#define ECB_CONCAT_(a, b) a ## b 845#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 846#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a 847#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 848#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
849#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
663 850
664#define ecb_function_ ecb_inline 851#define ecb_function_ ecb_inline
665 852
666#if ECB_GCC_VERSION(3,1) 853#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
667 #define ecb_attribute(attrlist) __attribute__(attrlist) 854 #define ecb_attribute(attrlist) __attribute__ (attrlist)
855#else
856 #define ecb_attribute(attrlist)
857#endif
858
859#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr) 860 #define ecb_is_constant(expr) __builtin_constant_p (expr)
861#else
862 /* possible C11 impl for integral types
863 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
864 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
865
866 #define ecb_is_constant(expr) 0
867#endif
868
869#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 870 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
871#else
872 #define ecb_expect(expr,value) (expr)
873#endif
874
875#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 876 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else 877#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality) 878 #define ecb_prefetch(addr,rw,locality)
676#endif 879#endif
677 880
678/* no emulation for ecb_decltype */ 881/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5) 882#if ECB_CPP11
883 // older implementations might have problems with decltype(x)::type, work around it
884 template<class T> struct ecb_decltype_t { typedef T type; };
680 #define ecb_decltype(x) __decltype(x) 885 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
681#elif ECB_GCC_VERSION(3,0) 886#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
682 #define ecb_decltype(x) __typeof(x) 887 #define ecb_decltype(x) __typeof__ (x)
683#endif 888#endif
684 889
890#if _MSC_VER >= 1300
891 #define ecb_deprecated __declspec (deprecated)
892#else
893 #define ecb_deprecated ecb_attribute ((__deprecated__))
894#endif
895
896#if _MSC_VER >= 1500
897 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
898#elif ECB_GCC_VERSION(4,5)
899 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
900#else
901 #define ecb_deprecated_message(msg) ecb_deprecated
902#endif
903
904#if _MSC_VER >= 1400
905 #define ecb_noinline __declspec (noinline)
906#else
685#define ecb_noinline ecb_attribute ((__noinline__)) 907 #define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__)) 908#endif
909
687#define ecb_unused ecb_attribute ((__unused__)) 910#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__)) 911#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__)) 912#define ecb_pure ecb_attribute ((__pure__))
913
914#if ECB_C11 || __IBMC_NORETURN
915 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
916 #define ecb_noreturn _Noreturn
917#elif ECB_CPP11
918 #define ecb_noreturn [[noreturn]]
919#elif _MSC_VER >= 1200
920 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
921 #define ecb_noreturn __declspec (noreturn)
922#else
923 #define ecb_noreturn ecb_attribute ((__noreturn__))
924#endif
690 925
691#if ECB_GCC_VERSION(4,3) 926#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__)) 927 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__)) 928 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__)) 929 #define ecb_cold ecb_attribute ((__cold__))
… …
706/* for compatibility to the rest of the world */ 941/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr) 942#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr) 943#define ecb_unlikely(expr) ecb_expect_false (expr)
709 944
710/* count trailing zero bits and count # of one bits */ 945/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4) 946#if ECB_GCC_VERSION(3,4) \
947 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
948 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
949 && ECB_CLANG_BUILTIN(__builtin_popcount))
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 950 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 951 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 952 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x) 953 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x) 954 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x) 955 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */ 956 /* no popcountll */
719#else 957#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 958 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
721 ecb_function_ int 959 ecb_function_ ecb_const int
722 ecb_ctz32 (uint32_t x) 960 ecb_ctz32 (uint32_t x)
723 { 961 {
962#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
963 unsigned long r;
964 _BitScanForward (&r, x);
965 return (int)r;
966#else
724 int r = 0; 967 int r = 0;
725 968
726 x &= ~x + 1; /* this isolates the lowest bit */ 969 x &= ~x + 1; /* this isolates the lowest bit */
727 970
728#if ECB_branchless_on_i386 971#if ECB_branchless_on_i386
… …
738 if (x & 0xff00ff00) r += 8; 981 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16; 982 if (x & 0xffff0000) r += 16;
740#endif 983#endif
741 984
742 return r; 985 return r;
986#endif
743 } 987 }
744 988
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 989 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
746 ecb_function_ int 990 ecb_function_ ecb_const int
747 ecb_ctz64 (uint64_t x) 991 ecb_ctz64 (uint64_t x)
748 { 992 {
993#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
994 unsigned long r;
995 _BitScanForward64 (&r, x);
996 return (int)r;
997#else
749 int shift = x & 0xffffffffU ? 0 : 32; 998 int shift = x & 0xffffffff ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift; 999 return ecb_ctz32 (x >> shift) + shift;
1000#endif
751 } 1001 }
752 1002
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1003 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
754 ecb_function_ int 1004 ecb_function_ ecb_const int
755 ecb_popcount32 (uint32_t x) 1005 ecb_popcount32 (uint32_t x)
756 { 1006 {
757 x -= (x >> 1) & 0x55555555; 1007 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1008 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f; 1009 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101; 1010 x *= 0x01010101;
761 1011
762 return x >> 24; 1012 return x >> 24;
763 } 1013 }
764 1014
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1015 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
766 ecb_function_ int ecb_ld32 (uint32_t x) 1016 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
767 { 1017 {
1018#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1019 unsigned long r;
1020 _BitScanReverse (&r, x);
1021 return (int)r;
1022#else
768 int r = 0; 1023 int r = 0;
769 1024
770 if (x >> 16) { x >>= 16; r += 16; } 1025 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; } 1026 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; } 1027 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; } 1028 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; } 1029 if (x >> 1) { r += 1; }
775 1030
776 return r; 1031 return r;
1032#endif
777 } 1033 }
778 1034
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1035 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
780 ecb_function_ int ecb_ld64 (uint64_t x) 1036 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
781 { 1037 {
1038#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1039 unsigned long r;
1040 _BitScanReverse64 (&r, x);
1041 return (int)r;
1042#else
782 int r = 0; 1043 int r = 0;
783 1044
784 if (x >> 32) { x >>= 32; r += 32; } 1045 if (x >> 32) { x >>= 32; r += 32; }
785 1046
786 return r + ecb_ld32 (x); 1047 return r + ecb_ld32 (x);
1048#endif
787 } 1049 }
788#endif 1050#endif
789 1051
1052ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1053ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1054ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1056
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1057ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1058ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
792{ 1059{
793 return ( (x * 0x0802U & 0x22110U) 1060 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1061 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795} 1062}
796 1063
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1064ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1065ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
799{ 1066{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1067 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1068 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1069 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8); 1070 x = ( x >> 8 ) | ( x << 8);
804 1071
805 return x; 1072 return x;
806} 1073}
807 1074
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1075ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1076ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
810{ 1077{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1078 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1079 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1080 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1081 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
817 return x; 1084 return x;
818} 1085}
819 1086
820/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1087/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */ 1088/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1089ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
823ecb_function_ int 1090ecb_function_ ecb_const int
824ecb_popcount64 (uint64_t x) 1091ecb_popcount64 (uint64_t x)
825{ 1092{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1093 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827} 1094}
828 1095
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1096ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1097ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
837 1104
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1105ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1106ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1107ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1108ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1109ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1110ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1111ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1112ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846 1113
847#if ECB_GCC_VERSION(4,3) 1114#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1115 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1116 #define ecb_bswap16(x) __builtin_bswap16 (x)
1117 #else
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1118 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1119 #endif
849 #define ecb_bswap32(x) __builtin_bswap32 (x) 1120 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x) 1121 #define ecb_bswap64(x) __builtin_bswap64 (x)
1122#elif _MSC_VER
1123 #include <stdlib.h>
1124 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1125 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1126 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
851#else 1127#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1128 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
853 ecb_function_ uint16_t 1129 ecb_function_ ecb_const uint16_t
854 ecb_bswap16 (uint16_t x) 1130 ecb_bswap16 (uint16_t x)
855 { 1131 {
856 return ecb_rotl16 (x, 8); 1132 return ecb_rotl16 (x, 8);
857 } 1133 }
858 1134
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1135 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
860 ecb_function_ uint32_t 1136 ecb_function_ ecb_const uint32_t
861 ecb_bswap32 (uint32_t x) 1137 ecb_bswap32 (uint32_t x)
862 { 1138 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1139 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 } 1140 }
865 1141
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1142 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
867 ecb_function_ uint64_t 1143 ecb_function_ ecb_const uint64_t
868 ecb_bswap64 (uint64_t x) 1144 ecb_bswap64 (uint64_t x)
869 { 1145 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1146 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 } 1147 }
872#endif 1148#endif
873 1149
874#if ECB_GCC_VERSION(4,5) 1150#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
875 #define ecb_unreachable() __builtin_unreachable () 1151 #define ecb_unreachable() __builtin_unreachable ()
876#else 1152#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1153 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1154 ecb_inline ecb_noreturn void ecb_unreachable (void);
879 ecb_inline void ecb_unreachable (void) { } 1155 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
880#endif 1156#endif
881 1157
882/* try to tell the compiler that some condition is definitely true */ 1158/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1159#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
884 1160
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1161ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
886ecb_inline unsigned char 1162ecb_inline ecb_const uint32_t
887ecb_byteorder_helper (void) 1163ecb_byteorder_helper (void)
888{ 1164{
889 const uint32_t u = 0x11223344; 1165 /* the union code still generates code under pressure in gcc, */
890 return *(unsigned char *)&u; 1166 /* but less than using pointers, and always seems to */
1167 /* successfully return a constant. */
1168 /* the reason why we have this horrible preprocessor mess */
1169 /* is to avoid it in all cases, at least on common architectures */
1170 /* or when using a recent enough gcc version (>= 4.6) */
1171#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1172 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1173 #define ECB_LITTLE_ENDIAN 1
1174 return 0x44332211;
1175#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1176 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1177 #define ECB_BIG_ENDIAN 1
1178 return 0x11223344;
1179#else
1180 union
1181 {
1182 uint8_t c[4];
1183 uint32_t u;
1184 } u = { 0x11, 0x22, 0x33, 0x44 };
1185 return u.u;
1186#endif
891} 1187}
892 1188
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1189ecb_inline ecb_const ecb_bool ecb_big_endian (void);
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1190ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_little_endian (void);
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1192ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
897 1193
898#if ECB_GCC_VERSION(3,0) || ECB_C99 1194#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1195 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else 1196#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1197 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif 1198#endif
903 1199
904#if __cplusplus 1200#if ECB_CPP
905 template<typename T> 1201 template<typename T>
906 static inline T ecb_div_rd (T val, T div) 1202 static inline T ecb_div_rd (T val, T div)
907 { 1203 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1204 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 } 1205 }
… …
926 } 1222 }
927#else 1223#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1224 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif 1225#endif
930 1226
1227ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1228ecb_function_ ecb_const uint32_t
1229ecb_binary16_to_binary32 (uint32_t x)
1230{
1231 unsigned int s = (x & 0x8000) << (31 - 15);
1232 int e = (x >> 10) & 0x001f;
1233 unsigned int m = x & 0x03ff;
1234
1235 if (ecb_expect_false (e == 31))
1236 /* infinity or NaN */
1237 e = 255 - (127 - 15);
1238 else if (ecb_expect_false (!e))
1239 {
1240 if (ecb_expect_true (!m))
1241 /* zero, handled by code below by forcing e to 0 */
1242 e = 0 - (127 - 15);
1243 else
1244 {
1245 /* subnormal, renormalise */
1246 unsigned int s = 10 - ecb_ld32 (m);
1247
1248 m = (m << s) & 0x3ff; /* mask implicit bit */
1249 e -= s - 1;
1250 }
1251 }
1252
1253 /* e and m now are normalised, or zero, (or inf or nan) */
1254 e += 127 - 15;
1255
1256 return s | (e << 23) | (m << (23 - 10));
1257}
1258
1259ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1260ecb_function_ ecb_const uint16_t
1261ecb_binary32_to_binary16 (uint32_t x)
1262{
1263 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1264 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1265 unsigned int m = x & 0x007fffff;
1266
1267 x &= 0x7fffffff;
1268
1269 /* if it's within range of binary16 normals, use fast path */
1270 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1271 {
1272 /* mantissa round-to-even */
1273 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1274
1275 /* handle overflow */
1276 if (ecb_expect_false (m >= 0x00800000))
1277 {
1278 m >>= 1;
1279 e += 1;
1280 }
1281
1282 return s | (e << 10) | (m >> (23 - 10));
1283 }
1284
1285 /* handle large numbers and infinity */
1286 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1287 return s | 0x7c00;
1288
1289 /* handle zero, subnormals and small numbers */
1290 if (ecb_expect_true (x < 0x38800000))
1291 {
1292 /* zero */
1293 if (ecb_expect_true (!x))
1294 return s;
1295
1296 /* handle subnormals */
1297
1298 /* too small, will be zero */
1299 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1300 return s;
1301
1302 m |= 0x00800000; /* make implicit bit explicit */
1303
1304 /* very tricky - we need to round to the nearest e (+10) bit value */
1305 {
1306 unsigned int bits = 14 - e;
1307 unsigned int half = (1 << (bits - 1)) - 1;
1308 unsigned int even = (m >> bits) & 1;
1309
1310 /* if this overflows, we will end up with a normalised number */
1311 m = (m + half + even) >> bits;
1312 }
1313
1314 return s | m;
1315 }
1316
1317 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1318 m >>= 13;
1319
1320 return s | 0x7c00 | m | !m;
1321}
1322
1323/*******************************************************************************/
1324/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1325
1326/* basically, everything uses "ieee pure-endian" floating point numbers */
1327/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1328#if 0 \
1329 || __i386 || __i386__ \
1330 || ECB_GCC_AMD64 \
1331 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1332 || defined __s390__ || defined __s390x__ \
1333 || defined __mips__ \
1334 || defined __alpha__ \
1335 || defined __hppa__ \
1336 || defined __ia64__ \
1337 || defined __m68k__ \
1338 || defined __m88k__ \
1339 || defined __sh__ \
1340 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1341 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1342 || defined __aarch64__
1343 #define ECB_STDFP 1
1344 #include <string.h> /* for memcpy */
1345#else
1346 #define ECB_STDFP 0
1347#endif
1348
1349#ifndef ECB_NO_LIBM
1350
1351 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1352
1353 /* only the oldest of old doesn't have this one. solaris. */
1354 #ifdef INFINITY
1355 #define ECB_INFINITY INFINITY
1356 #else
1357 #define ECB_INFINITY HUGE_VAL
1358 #endif
1359
1360 #ifdef NAN
1361 #define ECB_NAN NAN
1362 #else
1363 #define ECB_NAN ECB_INFINITY
1364 #endif
1365
1366 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1367 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1368 #define ecb_frexpf(x,e) frexpf ((x), (e))
1369 #else
1370 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1371 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1372 #endif
1373
1374 /* convert a float to ieee single/binary32 */
1375 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1376 ecb_function_ ecb_const uint32_t
1377 ecb_float_to_binary32 (float x)
1378 {
1379 uint32_t r;
1380
1381 #if ECB_STDFP
1382 memcpy (&r, &x, 4);
1383 #else
1384 /* slow emulation, works for anything but -0 */
1385 uint32_t m;
1386 int e;
1387
1388 if (x == 0e0f ) return 0x00000000U;
1389 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1390 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1391 if (x != x ) return 0x7fbfffffU;
1392
1393 m = ecb_frexpf (x, &e) * 0x1000000U;
1394
1395 r = m & 0x80000000U;
1396
1397 if (r)
1398 m = -m;
1399
1400 if (e <= -126)
1401 {
1402 m &= 0xffffffU;
1403 m >>= (-125 - e);
1404 e = -126;
1405 }
1406
1407 r |= (e + 126) << 23;
1408 r |= m & 0x7fffffU;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* converts an ieee single/binary32 to a float */
1415 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1416 ecb_function_ ecb_const float
1417 ecb_binary32_to_float (uint32_t x)
1418 {
1419 float r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 4);
1423 #else
1424 /* emulation, only works for normals and subnormals and +0 */
1425 int neg = x >> 31;
1426 int e = (x >> 23) & 0xffU;
1427
1428 x &= 0x7fffffU;
1429
1430 if (e)
1431 x |= 0x800000U;
1432 else
1433 e = 1;
1434
1435 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1436 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1437
1438 r = neg ? -r : r;
1439 #endif
1440
1441 return r;
1442 }
1443
1444 /* convert a double to ieee double/binary64 */
1445 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1446 ecb_function_ ecb_const uint64_t
1447 ecb_double_to_binary64 (double x)
1448 {
1449 uint64_t r;
1450
1451 #if ECB_STDFP
1452 memcpy (&r, &x, 8);
1453 #else
1454 /* slow emulation, works for anything but -0 */
1455 uint64_t m;
1456 int e;
1457
1458 if (x == 0e0 ) return 0x0000000000000000U;
1459 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1460 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1461 if (x != x ) return 0X7ff7ffffffffffffU;
1462
1463 m = frexp (x, &e) * 0x20000000000000U;
1464
1465 r = m & 0x8000000000000000;;
1466
1467 if (r)
1468 m = -m;
1469
1470 if (e <= -1022)
1471 {
1472 m &= 0x1fffffffffffffU;
1473 m >>= (-1021 - e);
1474 e = -1022;
1475 }
1476
1477 r |= ((uint64_t)(e + 1022)) << 52;
1478 r |= m & 0xfffffffffffffU;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* converts an ieee double/binary64 to a double */
1485 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1486 ecb_function_ ecb_const double
1487 ecb_binary64_to_double (uint64_t x)
1488 {
1489 double r;
1490
1491 #if ECB_STDFP
1492 memcpy (&r, &x, 8);
1493 #else
1494 /* emulation, only works for normals and subnormals and +0 */
1495 int neg = x >> 63;
1496 int e = (x >> 52) & 0x7ffU;
1497
1498 x &= 0xfffffffffffffU;
1499
1500 if (e)
1501 x |= 0x10000000000000U;
1502 else
1503 e = 1;
1504
1505 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1506 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1507
1508 r = neg ? -r : r;
1509 #endif
1510
1511 return r;
1512 }
1513
1514 /* convert a float to ieee half/binary16 */
1515 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1516 ecb_function_ ecb_const uint16_t
1517 ecb_float_to_binary16 (float x)
1518 {
1519 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1520 }
1521
1522 /* convert an ieee half/binary16 to float */
1523 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1524 ecb_function_ ecb_const float
1525 ecb_binary16_to_float (uint16_t x)
1526 {
1527 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1528 }
1529
1530#endif
1531
931#endif 1532#endif
932 1533
933/* ECB.H END */ 1534/* ECB.H END */
934 1535
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1536#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
… …
956#define inline_size ecb_inline 1557#define inline_size ecb_inline
957 1558
958#if EV_FEATURE_CODE 1559#if EV_FEATURE_CODE
959# define inline_speed ecb_inline 1560# define inline_speed ecb_inline
960#else 1561#else
961# define inline_speed static noinline 1562# define inline_speed noinline static
962#endif 1563#endif
963 1564
964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1565#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
965 1566
966#if EV_MINPRI == EV_MAXPRI 1567#if EV_MINPRI == EV_MAXPRI
967# define ABSPRI(w) (((W)w), 0) 1568# define ABSPRI(w) (((W)w), 0)
968#else 1569#else
969# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1570# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
970#endif 1571#endif
971 1572
972#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1573#define EMPTY /* required for microsofts broken pseudo-c compiler */
973#define EMPTY2(a,b) /* used to suppress some warnings */
974 1574
975typedef ev_watcher *W; 1575typedef ev_watcher *W;
976typedef ev_watcher_list *WL; 1576typedef ev_watcher_list *WL;
977typedef ev_watcher_time *WT; 1577typedef ev_watcher_time *WT;
978 1578
… …
1013#else 1613#else
1014 1614
1015#include <float.h> 1615#include <float.h>
1016 1616
1017/* a floor() replacement function, should be independent of ev_tstamp type */ 1617/* a floor() replacement function, should be independent of ev_tstamp type */
1618noinline
1018static ev_tstamp noinline 1619static ev_tstamp
1019ev_floor (ev_tstamp v) 1620ev_floor (ev_tstamp v)
1020{ 1621{
1021 /* the choice of shift factor is not terribly important */ 1622 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1623#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1624 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
1055 1656
1056#ifdef __linux 1657#ifdef __linux
1057# include <sys/utsname.h> 1658# include <sys/utsname.h>
1058#endif 1659#endif
1059 1660
1060static unsigned int noinline ecb_cold 1661noinline ecb_cold
1662static unsigned int
1061ev_linux_version (void) 1663ev_linux_version (void)
1062{ 1664{
1063#ifdef __linux 1665#ifdef __linux
1064 unsigned int v = 0; 1666 unsigned int v = 0;
1065 struct utsname buf; 1667 struct utsname buf;
… …
1094} 1696}
1095 1697
1096/*****************************************************************************/ 1698/*****************************************************************************/
1097 1699
1098#if EV_AVOID_STDIO 1700#if EV_AVOID_STDIO
1099static void noinline ecb_cold 1701noinline ecb_cold
1702static void
1100ev_printerr (const char *msg) 1703ev_printerr (const char *msg)
1101{ 1704{
1102 write (STDERR_FILENO, msg, strlen (msg)); 1705 write (STDERR_FILENO, msg, strlen (msg));
1103} 1706}
1104#endif 1707#endif
1105 1708
1106static void (*syserr_cb)(const char *msg); 1709static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1107 1710
1108void ecb_cold 1711ecb_cold
1712void
1109ev_set_syserr_cb (void (*cb)(const char *msg)) 1713ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1110{ 1714{
1111 syserr_cb = cb; 1715 syserr_cb = cb;
1112} 1716}
1113 1717
1114static void noinline ecb_cold 1718noinline ecb_cold
1719static void
1115ev_syserr (const char *msg) 1720ev_syserr (const char *msg)
1116{ 1721{
1117 if (!msg) 1722 if (!msg)
1118 msg = "(libev) system error"; 1723 msg = "(libev) system error";
1119 1724
… …
1132 abort (); 1737 abort ();
1133 } 1738 }
1134} 1739}
1135 1740
1136static void * 1741static void *
1137ev_realloc_emul (void *ptr, long size) 1742ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1138{ 1743{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
1142 /* some systems, notably openbsd and darwin, fail to properly 1744 /* some systems, notably openbsd and darwin, fail to properly
1143 * implement realloc (x, 0) (as required by both ansi c-89 and 1745 * implement realloc (x, 0) (as required by both ansi c-89 and
1144 * the single unix specification, so work around them here. 1746 * the single unix specification, so work around them here.
1747 * recently, also (at least) fedora and debian started breaking it,
1748 * despite documenting it otherwise.
1145 */ 1749 */
1146 1750
1147 if (size) 1751 if (size)
1148 return realloc (ptr, size); 1752 return realloc (ptr, size);
1149 1753
1150 free (ptr); 1754 free (ptr);
1151 return 0; 1755 return 0;
1152#endif
1153} 1756}
1154 1757
1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1758static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1156 1759
1157void ecb_cold 1760ecb_cold
1761void
1158ev_set_allocator (void *(*cb)(void *ptr, long size)) 1762ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1159{ 1763{
1160 alloc = cb; 1764 alloc = cb;
1161} 1765}
1162 1766
1163inline_speed void * 1767inline_speed void *
… …
1190typedef struct 1794typedef struct
1191{ 1795{
1192 WL head; 1796 WL head;
1193 unsigned char events; /* the events watched for */ 1797 unsigned char events; /* the events watched for */
1194 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1798 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1799 unsigned char emask; /* some backends store the actual kernel mask in here */
1196 unsigned char unused; 1800 unsigned char unused;
1197#if EV_USE_EPOLL 1801#if EV_USE_EPOLL
1198 unsigned int egen; /* generation counter to counter epoll bugs */ 1802 unsigned int egen; /* generation counter to counter epoll bugs */
1199#endif 1803#endif
1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1804#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1280 1884
1281/*****************************************************************************/ 1885/*****************************************************************************/
1282 1886
1283#ifndef EV_HAVE_EV_TIME 1887#ifndef EV_HAVE_EV_TIME
1284ev_tstamp 1888ev_tstamp
1285ev_time (void) 1889ev_time (void) EV_NOEXCEPT
1286{ 1890{
1287#if EV_USE_REALTIME 1891#if EV_USE_REALTIME
1288 if (expect_true (have_realtime)) 1892 if (expect_true (have_realtime))
1289 { 1893 {
1290 struct timespec ts; 1894 struct timespec ts;
… …
1314 return ev_time (); 1918 return ev_time ();
1315} 1919}
1316 1920
1317#if EV_MULTIPLICITY 1921#if EV_MULTIPLICITY
1318ev_tstamp 1922ev_tstamp
1319ev_now (EV_P) 1923ev_now (EV_P) EV_NOEXCEPT
1320{ 1924{
1321 return ev_rt_now; 1925 return ev_rt_now;
1322} 1926}
1323#endif 1927#endif
1324 1928
1325void 1929void
1326ev_sleep (ev_tstamp delay) 1930ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1327{ 1931{
1328 if (delay > 0.) 1932 if (delay > 0.)
1329 { 1933 {
1330#if EV_USE_NANOSLEEP 1934#if EV_USE_NANOSLEEP
1331 struct timespec ts; 1935 struct timespec ts;
1332 1936
1333 EV_TS_SET (ts, delay); 1937 EV_TS_SET (ts, delay);
1334 nanosleep (&ts, 0); 1938 nanosleep (&ts, 0);
1335#elif defined(_WIN32) 1939#elif defined _WIN32
1940 /* maybe this should round up, as ms is very low resolution */
1941 /* compared to select (µs) or nanosleep (ns) */
1336 Sleep ((unsigned long)(delay * 1e3)); 1942 Sleep ((unsigned long)(delay * 1e3));
1337#else 1943#else
1338 struct timeval tv; 1944 struct timeval tv;
1339 1945
1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1946 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1371 } 1977 }
1372 1978
1373 return ncur; 1979 return ncur;
1374} 1980}
1375 1981
1376static void * noinline ecb_cold 1982noinline ecb_cold
1983static void *
1377array_realloc (int elem, void *base, int *cur, int cnt) 1984array_realloc (int elem, void *base, int *cur, int cnt)
1378{ 1985{
1379 *cur = array_nextsize (elem, *cur, cnt); 1986 *cur = array_nextsize (elem, *cur, cnt);
1380 return ev_realloc (base, elem * *cur); 1987 return ev_realloc (base, elem * *cur);
1381} 1988}
1382 1989
1990#define array_needsize_noinit(base,count)
1991
1383#define array_init_zero(base,count) \ 1992#define array_needsize_zerofill(base,count) \
1384 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1993 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1385 1994
1386#define array_needsize(type,base,cur,cnt,init) \ 1995#define array_needsize(type,base,cur,cnt,init) \
1387 if (expect_false ((cnt) > (cur))) \ 1996 if (expect_false ((cnt) > (cur))) \
1388 { \ 1997 { \
1389 int ecb_unused ocur_ = (cur); \ 1998 ecb_unused int ocur_ = (cur); \
1390 (base) = (type *)array_realloc \ 1999 (base) = (type *)array_realloc \
1391 (sizeof (type), (base), &(cur), (cnt)); \ 2000 (sizeof (type), (base), &(cur), (cnt)); \
1392 init ((base) + (ocur_), (cur) - ocur_); \ 2001 init ((base) + (ocur_), (cur) - ocur_); \
1393 } 2002 }
1394 2003
… …
1406 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2015 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1407 2016
1408/*****************************************************************************/ 2017/*****************************************************************************/
1409 2018
1410/* dummy callback for pending events */ 2019/* dummy callback for pending events */
1411static void noinline 2020noinline
2021static void
1412pendingcb (EV_P_ ev_prepare *w, int revents) 2022pendingcb (EV_P_ ev_prepare *w, int revents)
1413{ 2023{
1414} 2024}
1415 2025
1416void noinline 2026noinline
2027void
1417ev_feed_event (EV_P_ void *w, int revents) 2028ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1418{ 2029{
1419 W w_ = (W)w; 2030 W w_ = (W)w;
1420 int pri = ABSPRI (w_); 2031 int pri = ABSPRI (w_);
1421 2032
1422 if (expect_false (w_->pending)) 2033 if (expect_false (w_->pending))
1423 pendings [pri][w_->pending - 1].events |= revents; 2034 pendings [pri][w_->pending - 1].events |= revents;
1424 else 2035 else
1425 { 2036 {
1426 w_->pending = ++pendingcnt [pri]; 2037 w_->pending = ++pendingcnt [pri];
1427 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2038 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1428 pendings [pri][w_->pending - 1].w = w_; 2039 pendings [pri][w_->pending - 1].w = w_;
1429 pendings [pri][w_->pending - 1].events = revents; 2040 pendings [pri][w_->pending - 1].events = revents;
1430 } 2041 }
2042
2043 pendingpri = NUMPRI - 1;
1431} 2044}
1432 2045
1433inline_speed void 2046inline_speed void
1434feed_reverse (EV_P_ W w) 2047feed_reverse (EV_P_ W w)
1435{ 2048{
1436 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2049 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1437 rfeeds [rfeedcnt++] = w; 2050 rfeeds [rfeedcnt++] = w;
1438} 2051}
1439 2052
1440inline_size void 2053inline_size void
1441feed_reverse_done (EV_P_ int revents) 2054feed_reverse_done (EV_P_ int revents)
… …
1481 if (expect_true (!anfd->reify)) 2094 if (expect_true (!anfd->reify))
1482 fd_event_nocheck (EV_A_ fd, revents); 2095 fd_event_nocheck (EV_A_ fd, revents);
1483} 2096}
1484 2097
1485void 2098void
1486ev_feed_fd_event (EV_P_ int fd, int revents) 2099ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1487{ 2100{
1488 if (fd >= 0 && fd < anfdmax) 2101 if (fd >= 0 && fd < anfdmax)
1489 fd_event_nocheck (EV_A_ fd, revents); 2102 fd_event_nocheck (EV_A_ fd, revents);
1490} 2103}
1491 2104
… …
1549 2162
1550 fdchangecnt = 0; 2163 fdchangecnt = 0;
1551} 2164}
1552 2165
1553/* something about the given fd changed */ 2166/* something about the given fd changed */
1554inline_size void 2167inline_size
2168void
1555fd_change (EV_P_ int fd, int flags) 2169fd_change (EV_P_ int fd, int flags)
1556{ 2170{
1557 unsigned char reify = anfds [fd].reify; 2171 unsigned char reify = anfds [fd].reify;
1558 anfds [fd].reify |= flags; 2172 anfds [fd].reify |= flags;
1559 2173
1560 if (expect_true (!reify)) 2174 if (expect_true (!reify))
1561 { 2175 {
1562 ++fdchangecnt; 2176 ++fdchangecnt;
1563 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2177 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1564 fdchanges [fdchangecnt - 1] = fd; 2178 fdchanges [fdchangecnt - 1] = fd;
1565 } 2179 }
1566} 2180}
1567 2181
1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2182/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1569inline_speed void ecb_cold 2183inline_speed ecb_cold void
1570fd_kill (EV_P_ int fd) 2184fd_kill (EV_P_ int fd)
1571{ 2185{
1572 ev_io *w; 2186 ev_io *w;
1573 2187
1574 while ((w = (ev_io *)anfds [fd].head)) 2188 while ((w = (ev_io *)anfds [fd].head))
… …
1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2191 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1578 } 2192 }
1579} 2193}
1580 2194
1581/* check whether the given fd is actually valid, for error recovery */ 2195/* check whether the given fd is actually valid, for error recovery */
1582inline_size int ecb_cold 2196inline_size ecb_cold int
1583fd_valid (int fd) 2197fd_valid (int fd)
1584{ 2198{
1585#ifdef _WIN32 2199#ifdef _WIN32
1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2200 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1587#else 2201#else
1588 return fcntl (fd, F_GETFD) != -1; 2202 return fcntl (fd, F_GETFD) != -1;
1589#endif 2203#endif
1590} 2204}
1591 2205
1592/* called on EBADF to verify fds */ 2206/* called on EBADF to verify fds */
1593static void noinline ecb_cold 2207noinline ecb_cold
2208static void
1594fd_ebadf (EV_P) 2209fd_ebadf (EV_P)
1595{ 2210{
1596 int fd; 2211 int fd;
1597 2212
1598 for (fd = 0; fd < anfdmax; ++fd) 2213 for (fd = 0; fd < anfdmax; ++fd)
… …
1600 if (!fd_valid (fd) && errno == EBADF) 2215 if (!fd_valid (fd) && errno == EBADF)
1601 fd_kill (EV_A_ fd); 2216 fd_kill (EV_A_ fd);
1602} 2217}
1603 2218
1604/* called on ENOMEM in select/poll to kill some fds and retry */ 2219/* called on ENOMEM in select/poll to kill some fds and retry */
1605static void noinline ecb_cold 2220noinline ecb_cold
2221static void
1606fd_enomem (EV_P) 2222fd_enomem (EV_P)
1607{ 2223{
1608 int fd; 2224 int fd;
1609 2225
1610 for (fd = anfdmax; fd--; ) 2226 for (fd = anfdmax; fd--; )
… …
1614 break; 2230 break;
1615 } 2231 }
1616} 2232}
1617 2233
1618/* usually called after fork if backend needs to re-arm all fds from scratch */ 2234/* usually called after fork if backend needs to re-arm all fds from scratch */
1619static void noinline 2235noinline
2236static void
1620fd_rearm_all (EV_P) 2237fd_rearm_all (EV_P)
1621{ 2238{
1622 int fd; 2239 int fd;
1623 2240
1624 for (fd = 0; fd < anfdmax; ++fd) 2241 for (fd = 0; fd < anfdmax; ++fd)
… …
1805 2422
1806/*****************************************************************************/ 2423/*****************************************************************************/
1807 2424
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2425#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 2426
1810static void noinline ecb_cold 2427noinline ecb_cold
2428static void
1811evpipe_init (EV_P) 2429evpipe_init (EV_P)
1812{ 2430{
1813 if (!ev_is_active (&pipe_w)) 2431 if (!ev_is_active (&pipe_w))
1814 { 2432 {
2433 int fds [2];
2434
1815# if EV_USE_EVENTFD 2435# if EV_USE_EVENTFD
2436 fds [0] = -1;
1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2437 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1817 if (evfd < 0 && errno == EINVAL) 2438 if (fds [1] < 0 && errno == EINVAL)
1818 evfd = eventfd (0, 0); 2439 fds [1] = eventfd (0, 0);
1819 2440
1820 if (evfd >= 0) 2441 if (fds [1] < 0)
2442# endif
1821 { 2443 {
2444 while (pipe (fds))
2445 ev_syserr ("(libev) error creating signal/async pipe");
2446
2447 fd_intern (fds [0]);
2448 }
2449
1822 evpipe [0] = -1; 2450 evpipe [0] = fds [0];
1823 fd_intern (evfd); /* doing it twice doesn't hurt */ 2451
1824 ev_io_set (&pipe_w, evfd, EV_READ); 2452 if (evpipe [1] < 0)
2453 evpipe [1] = fds [1]; /* first call, set write fd */
2454 else
2455 {
2456 /* on subsequent calls, do not change evpipe [1] */
2457 /* so that evpipe_write can always rely on its value. */
2458 /* this branch does not do anything sensible on windows, */
2459 /* so must not be executed on windows */
2460
2461 dup2 (fds [1], evpipe [1]);
2462 close (fds [1]);
2463 }
2464
2465 fd_intern (evpipe [1]);
2466
2467 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2468 ev_io_start (EV_A_ &pipe_w);
2469 ev_unref (EV_A); /* watcher should not keep loop alive */
2470 }
2471}
2472
2473inline_speed void
2474evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2475{
2476 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2477
2478 if (expect_true (*flag))
2479 return;
2480
2481 *flag = 1;
2482 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2483
2484 pipe_write_skipped = 1;
2485
2486 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2487
2488 if (pipe_write_wanted)
2489 {
2490 int old_errno;
2491
2492 pipe_write_skipped = 0;
2493 ECB_MEMORY_FENCE_RELEASE;
2494
2495 old_errno = errno; /* save errno because write will clobber it */
2496
2497#if EV_USE_EVENTFD
2498 if (evpipe [0] < 0)
2499 {
2500 uint64_t counter = 1;
2501 write (evpipe [1], &counter, sizeof (uint64_t));
1825 } 2502 }
1826 else 2503 else
1827# endif 2504#endif
1828 { 2505 {
1829 while (pipe (evpipe)) 2506#ifdef _WIN32
1830 ev_syserr ("(libev) error creating signal/async pipe"); 2507 WSABUF buf;
1831 2508 DWORD sent;
1832 fd_intern (evpipe [0]); 2509 buf.buf = (char *)&buf;
1833 fd_intern (evpipe [1]); 2510 buf.len = 1;
1834 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2511 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1835 } 2512#else
1836
1837 ev_io_start (EV_A_ &pipe_w);
1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1839 }
1840}
1841
1842inline_speed void
1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1844{
1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1862 old_errno = errno; /* save errno because write will clobber it */
1863
1864#if EV_USE_EVENTFD
1865 if (evfd >= 0)
1866 {
1867 uint64_t counter = 1;
1868 write (evfd, &counter, sizeof (uint64_t));
1869 }
1870 else
1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1880 write (evpipe [1], &(evpipe [1]), 1); 2513 write (evpipe [1], &(evpipe [1]), 1);
2514#endif
1881 } 2515 }
1882 2516
1883 errno = old_errno; 2517 errno = old_errno;
1884 } 2518 }
1885} 2519}
… …
1892 int i; 2526 int i;
1893 2527
1894 if (revents & EV_READ) 2528 if (revents & EV_READ)
1895 { 2529 {
1896#if EV_USE_EVENTFD 2530#if EV_USE_EVENTFD
1897 if (evfd >= 0) 2531 if (evpipe [0] < 0)
1898 { 2532 {
1899 uint64_t counter; 2533 uint64_t counter;
1900 read (evfd, &counter, sizeof (uint64_t)); 2534 read (evpipe [1], &counter, sizeof (uint64_t));
1901 } 2535 }
1902 else 2536 else
1903#endif 2537#endif
1904 { 2538 {
1905 char dummy; 2539 char dummy[4];
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2540#ifdef _WIN32
2541 WSABUF buf;
2542 DWORD recvd;
2543 DWORD flags = 0;
2544 buf.buf = dummy;
2545 buf.len = sizeof (dummy);
2546 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2547#else
1907 read (evpipe [0], &dummy, 1); 2548 read (evpipe [0], &dummy, sizeof (dummy));
2549#endif
1908 } 2550 }
1909 } 2551 }
1910 2552
1911 pipe_write_skipped = 0; 2553 pipe_write_skipped = 0;
2554
2555 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1912 2556
1913#if EV_SIGNAL_ENABLE 2557#if EV_SIGNAL_ENABLE
1914 if (sig_pending) 2558 if (sig_pending)
1915 { 2559 {
1916 sig_pending = 0; 2560 sig_pending = 0;
2561
2562 ECB_MEMORY_FENCE;
1917 2563
1918 for (i = EV_NSIG - 1; i--; ) 2564 for (i = EV_NSIG - 1; i--; )
1919 if (expect_false (signals [i].pending)) 2565 if (expect_false (signals [i].pending))
1920 ev_feed_signal_event (EV_A_ i + 1); 2566 ev_feed_signal_event (EV_A_ i + 1);
1921 } 2567 }
… …
1923 2569
1924#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1925 if (async_pending) 2571 if (async_pending)
1926 { 2572 {
1927 async_pending = 0; 2573 async_pending = 0;
2574
2575 ECB_MEMORY_FENCE;
1928 2576
1929 for (i = asynccnt; i--; ) 2577 for (i = asynccnt; i--; )
1930 if (asyncs [i]->sent) 2578 if (asyncs [i]->sent)
1931 { 2579 {
1932 asyncs [i]->sent = 0; 2580 asyncs [i]->sent = 0;
2581 ECB_MEMORY_FENCE_RELEASE;
1933 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2582 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1934 } 2583 }
1935 } 2584 }
1936#endif 2585#endif
1937} 2586}
1938 2587
1939/*****************************************************************************/ 2588/*****************************************************************************/
1940 2589
1941void 2590void
1942ev_feed_signal (int signum) 2591ev_feed_signal (int signum) EV_NOEXCEPT
1943{ 2592{
1944#if EV_MULTIPLICITY 2593#if EV_MULTIPLICITY
2594 EV_P;
2595 ECB_MEMORY_FENCE_ACQUIRE;
1945 EV_P = signals [signum - 1].loop; 2596 EV_A = signals [signum - 1].loop;
1946 2597
1947 if (!EV_A) 2598 if (!EV_A)
1948 return; 2599 return;
1949#endif 2600#endif
1950 2601
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1; 2602 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending); 2603 evpipe_write (EV_A_ &sig_pending);
1956} 2604}
1957 2605
1958static void 2606static void
… …
1963#endif 2611#endif
1964 2612
1965 ev_feed_signal (signum); 2613 ev_feed_signal (signum);
1966} 2614}
1967 2615
1968void noinline 2616noinline
2617void
1969ev_feed_signal_event (EV_P_ int signum) 2618ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1970{ 2619{
1971 WL w; 2620 WL w;
1972 2621
1973 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2622 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1974 return; 2623 return;
1975 2624
1976 --signum; 2625 --signum;
1977 2626
1978#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
… …
1982 if (expect_false (signals [signum].loop != EV_A)) 2631 if (expect_false (signals [signum].loop != EV_A))
1983 return; 2632 return;
1984#endif 2633#endif
1985 2634
1986 signals [signum].pending = 0; 2635 signals [signum].pending = 0;
2636 ECB_MEMORY_FENCE_RELEASE;
1987 2637
1988 for (w = signals [signum].head; w; w = w->next) 2638 for (w = signals [signum].head; w; w = w->next)
1989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2639 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1990} 2640}
1991 2641
… …
2079# include "ev_port.c" 2729# include "ev_port.c"
2080#endif 2730#endif
2081#if EV_USE_KQUEUE 2731#if EV_USE_KQUEUE
2082# include "ev_kqueue.c" 2732# include "ev_kqueue.c"
2083#endif 2733#endif
2734#if EV_USE_LINUXAIO
2735# include "ev_linuxaio.c"
2736#endif
2084#if EV_USE_EPOLL 2737#if EV_USE_EPOLL
2085# include "ev_epoll.c" 2738# include "ev_epoll.c"
2086#endif 2739#endif
2087#if EV_USE_POLL 2740#if EV_USE_POLL
2088# include "ev_poll.c" 2741# include "ev_poll.c"
2089#endif 2742#endif
2090#if EV_USE_SELECT 2743#if EV_USE_SELECT
2091# include "ev_select.c" 2744# include "ev_select.c"
2092#endif 2745#endif
2093 2746
2094int ecb_cold 2747ecb_cold int
2095ev_version_major (void) 2748ev_version_major (void) EV_NOEXCEPT
2096{ 2749{
2097 return EV_VERSION_MAJOR; 2750 return EV_VERSION_MAJOR;
2098} 2751}
2099 2752
2100int ecb_cold 2753ecb_cold int
2101ev_version_minor (void) 2754ev_version_minor (void) EV_NOEXCEPT
2102{ 2755{
2103 return EV_VERSION_MINOR; 2756 return EV_VERSION_MINOR;
2104} 2757}
2105 2758
2106/* return true if we are running with elevated privileges and should ignore env variables */ 2759/* return true if we are running with elevated privileges and should ignore env variables */
2107int inline_size ecb_cold 2760inline_size ecb_cold int
2108enable_secure (void) 2761enable_secure (void)
2109{ 2762{
2110#ifdef _WIN32 2763#ifdef _WIN32
2111 return 0; 2764 return 0;
2112#else 2765#else
2113 return getuid () != geteuid () 2766 return getuid () != geteuid ()
2114 || getgid () != getegid (); 2767 || getgid () != getegid ();
2115#endif 2768#endif
2116} 2769}
2117 2770
2118unsigned int ecb_cold 2771ecb_cold
2772unsigned int
2119ev_supported_backends (void) 2773ev_supported_backends (void) EV_NOEXCEPT
2120{ 2774{
2121 unsigned int flags = 0; 2775 unsigned int flags = 0;
2122 2776
2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2777 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2124 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2778 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2125 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2779 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2780 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2126 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2781 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2782 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2128 2783
2129 return flags; 2784 return flags;
2130} 2785}
2131 2786
2132unsigned int ecb_cold 2787ecb_cold
2788unsigned int
2133ev_recommended_backends (void) 2789ev_recommended_backends (void) EV_NOEXCEPT
2134{ 2790{
2135 unsigned int flags = ev_supported_backends (); 2791 unsigned int flags = ev_supported_backends ();
2136 2792
2137#ifndef __NetBSD__ 2793#ifndef __NetBSD__
2138 /* kqueue is borked on everything but netbsd apparently */ 2794 /* kqueue is borked on everything but netbsd apparently */
… …
2146#endif 2802#endif
2147#ifdef __FreeBSD__ 2803#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2804 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif 2805#endif
2150 2806
2807 /* TODO: linuxaio is very experimental */
2808 flags &= ~EVBACKEND_LINUXAIO;
2809
2151 return flags; 2810 return flags;
2152} 2811}
2153 2812
2154unsigned int ecb_cold 2813ecb_cold
2814unsigned int
2155ev_embeddable_backends (void) 2815ev_embeddable_backends (void) EV_NOEXCEPT
2156{ 2816{
2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2817 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2158 2818
2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2819 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2820 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2162 2822
2163 return flags; 2823 return flags;
2164} 2824}
2165 2825
2166unsigned int 2826unsigned int
2167ev_backend (EV_P) 2827ev_backend (EV_P) EV_NOEXCEPT
2168{ 2828{
2169 return backend; 2829 return backend;
2170} 2830}
2171 2831
2172#if EV_FEATURE_API 2832#if EV_FEATURE_API
2173unsigned int 2833unsigned int
2174ev_iteration (EV_P) 2834ev_iteration (EV_P) EV_NOEXCEPT
2175{ 2835{
2176 return loop_count; 2836 return loop_count;
2177} 2837}
2178 2838
2179unsigned int 2839unsigned int
2180ev_depth (EV_P) 2840ev_depth (EV_P) EV_NOEXCEPT
2181{ 2841{
2182 return loop_depth; 2842 return loop_depth;
2183} 2843}
2184 2844
2185void 2845void
2186ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2846ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2187{ 2847{
2188 io_blocktime = interval; 2848 io_blocktime = interval;
2189} 2849}
2190 2850
2191void 2851void
2192ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2852ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2193{ 2853{
2194 timeout_blocktime = interval; 2854 timeout_blocktime = interval;
2195} 2855}
2196 2856
2197void 2857void
2198ev_set_userdata (EV_P_ void *data) 2858ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2199{ 2859{
2200 userdata = data; 2860 userdata = data;
2201} 2861}
2202 2862
2203void * 2863void *
2204ev_userdata (EV_P) 2864ev_userdata (EV_P) EV_NOEXCEPT
2205{ 2865{
2206 return userdata; 2866 return userdata;
2207} 2867}
2208 2868
2209void 2869void
2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2870ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2211{ 2871{
2212 invoke_cb = invoke_pending_cb; 2872 invoke_cb = invoke_pending_cb;
2213} 2873}
2214 2874
2215void 2875void
2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2876ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2217{ 2877{
2218 release_cb = release; 2878 release_cb = release;
2219 acquire_cb = acquire; 2879 acquire_cb = acquire;
2220} 2880}
2221#endif 2881#endif
2222 2882
2223/* initialise a loop structure, must be zero-initialised */ 2883/* initialise a loop structure, must be zero-initialised */
2224static void noinline ecb_cold 2884noinline ecb_cold
2885static void
2225loop_init (EV_P_ unsigned int flags) 2886loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2226{ 2887{
2227 if (!backend) 2888 if (!backend)
2228 { 2889 {
2229 origflags = flags; 2890 origflags = flags;
2230 2891
… …
2275#if EV_ASYNC_ENABLE 2936#if EV_ASYNC_ENABLE
2276 async_pending = 0; 2937 async_pending = 0;
2277#endif 2938#endif
2278 pipe_write_skipped = 0; 2939 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0; 2940 pipe_write_wanted = 0;
2941 evpipe [0] = -1;
2942 evpipe [1] = -1;
2280#if EV_USE_INOTIFY 2943#if EV_USE_INOTIFY
2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2944 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2282#endif 2945#endif
2283#if EV_USE_SIGNALFD 2946#if EV_USE_SIGNALFD
2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2947 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2286 2949
2287 if (!(flags & EVBACKEND_MASK)) 2950 if (!(flags & EVBACKEND_MASK))
2288 flags |= ev_recommended_backends (); 2951 flags |= ev_recommended_backends ();
2289 2952
2290#if EV_USE_IOCP 2953#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2954 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif 2955#endif
2293#if EV_USE_PORT 2956#if EV_USE_PORT
2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2957 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2295#endif 2958#endif
2296#if EV_USE_KQUEUE 2959#if EV_USE_KQUEUE
2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2960 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2961#endif
2962#if EV_USE_LINUXAIO
2963 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2298#endif 2964#endif
2299#if EV_USE_EPOLL 2965#if EV_USE_EPOLL
2300 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2301#endif 2967#endif
2302#if EV_USE_POLL 2968#if EV_USE_POLL
2303 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2304#endif 2970#endif
2305#if EV_USE_SELECT 2971#if EV_USE_SELECT
2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2972 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2307#endif 2973#endif
2308 2974
2309 ev_prepare_init (&pending_w, pendingcb); 2975 ev_prepare_init (&pending_w, pendingcb);
2310 2976
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2977#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2314#endif 2980#endif
2315 } 2981 }
2316} 2982}
2317 2983
2318/* free up a loop structure */ 2984/* free up a loop structure */
2319void ecb_cold 2985ecb_cold
2986void
2320ev_loop_destroy (EV_P) 2987ev_loop_destroy (EV_P)
2321{ 2988{
2322 int i; 2989 int i;
2323 2990
2324#if EV_MULTIPLICITY 2991#if EV_MULTIPLICITY
… …
2335 EV_INVOKE_PENDING; 3002 EV_INVOKE_PENDING;
2336 } 3003 }
2337#endif 3004#endif
2338 3005
2339#if EV_CHILD_ENABLE 3006#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev)) 3007 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2341 { 3008 {
2342 ev_ref (EV_A); /* child watcher */ 3009 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev); 3010 ev_signal_stop (EV_A_ &childev);
2344 } 3011 }
2345#endif 3012#endif
… …
2347 if (ev_is_active (&pipe_w)) 3014 if (ev_is_active (&pipe_w))
2348 { 3015 {
2349 /*ev_ref (EV_A);*/ 3016 /*ev_ref (EV_A);*/
2350 /*ev_io_stop (EV_A_ &pipe_w);*/ 3017 /*ev_io_stop (EV_A_ &pipe_w);*/
2351 3018
2352#if EV_USE_EVENTFD
2353 if (evfd >= 0)
2354 close (evfd);
2355#endif
2356
2357 if (evpipe [0] >= 0)
2358 {
2359 EV_WIN32_CLOSE_FD (evpipe [0]); 3019 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2360 EV_WIN32_CLOSE_FD (evpipe [1]); 3020 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2361 }
2362 } 3021 }
2363 3022
2364#if EV_USE_SIGNALFD 3023#if EV_USE_SIGNALFD
2365 if (ev_is_active (&sigfd_w)) 3024 if (ev_is_active (&sigfd_w))
2366 close (sigfd); 3025 close (sigfd);
… …
2373 3032
2374 if (backend_fd >= 0) 3033 if (backend_fd >= 0)
2375 close (backend_fd); 3034 close (backend_fd);
2376 3035
2377#if EV_USE_IOCP 3036#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3037 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif 3038#endif
2380#if EV_USE_PORT 3039#if EV_USE_PORT
2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3040 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2382#endif 3041#endif
2383#if EV_USE_KQUEUE 3042#if EV_USE_KQUEUE
2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3043 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3044#endif
3045#if EV_USE_LINUXAIO
3046 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2385#endif 3047#endif
2386#if EV_USE_EPOLL 3048#if EV_USE_EPOLL
2387 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3049 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2388#endif 3050#endif
2389#if EV_USE_POLL 3051#if EV_USE_POLL
2390 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3052 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2391#endif 3053#endif
2392#if EV_USE_SELECT 3054#if EV_USE_SELECT
2393 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3055 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2394#endif 3056#endif
2395 3057
2396 for (i = NUMPRI; i--; ) 3058 for (i = NUMPRI; i--; )
2397 { 3059 {
2398 array_free (pending, [i]); 3060 array_free (pending, [i]);
… …
2440 3102
2441inline_size void 3103inline_size void
2442loop_fork (EV_P) 3104loop_fork (EV_P)
2443{ 3105{
2444#if EV_USE_PORT 3106#if EV_USE_PORT
2445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3107 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2446#endif 3108#endif
2447#if EV_USE_KQUEUE 3109#if EV_USE_KQUEUE
2448 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3110 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3111#endif
3112#if EV_USE_LINUXAIO
3113 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2449#endif 3114#endif
2450#if EV_USE_EPOLL 3115#if EV_USE_EPOLL
2451 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3116 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2452#endif 3117#endif
2453#if EV_USE_INOTIFY 3118#if EV_USE_INOTIFY
2454 infy_fork (EV_A); 3119 infy_fork (EV_A);
2455#endif 3120#endif
2456 3121
3122#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 if (ev_is_active (&pipe_w)) 3123 if (ev_is_active (&pipe_w) && postfork != 2)
2458 { 3124 {
2459 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3125 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2460 3126
2461 ev_ref (EV_A); 3127 ev_ref (EV_A);
2462 ev_io_stop (EV_A_ &pipe_w); 3128 ev_io_stop (EV_A_ &pipe_w);
2463 3129
2464#if EV_USE_EVENTFD
2465 if (evfd >= 0)
2466 close (evfd);
2467#endif
2468
2469 if (evpipe [0] >= 0) 3130 if (evpipe [0] >= 0)
2470 {
2471 EV_WIN32_CLOSE_FD (evpipe [0]); 3131 EV_WIN32_CLOSE_FD (evpipe [0]);
2472 EV_WIN32_CLOSE_FD (evpipe [1]);
2473 }
2474 3132
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2476 evpipe_init (EV_A); 3133 evpipe_init (EV_A);
2477 /* now iterate over everything, in case we missed something */ 3134 /* iterate over everything, in case we missed something before */
2478 pipecb (EV_A_ &pipe_w, EV_READ); 3135 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2479#endif
2480 } 3136 }
3137#endif
2481 3138
2482 postfork = 0; 3139 postfork = 0;
2483} 3140}
2484 3141
2485#if EV_MULTIPLICITY 3142#if EV_MULTIPLICITY
2486 3143
3144ecb_cold
2487struct ev_loop * ecb_cold 3145struct ev_loop *
2488ev_loop_new (unsigned int flags) 3146ev_loop_new (unsigned int flags) EV_NOEXCEPT
2489{ 3147{
2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3148 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2491 3149
2492 memset (EV_A, 0, sizeof (struct ev_loop)); 3150 memset (EV_A, 0, sizeof (struct ev_loop));
2493 loop_init (EV_A_ flags); 3151 loop_init (EV_A_ flags);
… …
2500} 3158}
2501 3159
2502#endif /* multiplicity */ 3160#endif /* multiplicity */
2503 3161
2504#if EV_VERIFY 3162#if EV_VERIFY
2505static void noinline ecb_cold 3163noinline ecb_cold
3164static void
2506verify_watcher (EV_P_ W w) 3165verify_watcher (EV_P_ W w)
2507{ 3166{
2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3167 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2509 3168
2510 if (w->pending) 3169 if (w->pending)
2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3170 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2512} 3171}
2513 3172
2514static void noinline ecb_cold 3173noinline ecb_cold
3174static void
2515verify_heap (EV_P_ ANHE *heap, int N) 3175verify_heap (EV_P_ ANHE *heap, int N)
2516{ 3176{
2517 int i; 3177 int i;
2518 3178
2519 for (i = HEAP0; i < N + HEAP0; ++i) 3179 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2524 3184
2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3185 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2526 } 3186 }
2527} 3187}
2528 3188
2529static void noinline ecb_cold 3189noinline ecb_cold
3190static void
2530array_verify (EV_P_ W *ws, int cnt) 3191array_verify (EV_P_ W *ws, int cnt)
2531{ 3192{
2532 while (cnt--) 3193 while (cnt--)
2533 { 3194 {
2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3195 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2537} 3198}
2538#endif 3199#endif
2539 3200
2540#if EV_FEATURE_API 3201#if EV_FEATURE_API
2541void ecb_cold 3202void ecb_cold
2542ev_verify (EV_P) 3203ev_verify (EV_P) EV_NOEXCEPT
2543{ 3204{
2544#if EV_VERIFY 3205#if EV_VERIFY
2545 int i; 3206 int i;
2546 WL w; 3207 WL w, w2;
2547 3208
2548 assert (activecnt >= -1); 3209 assert (activecnt >= -1);
2549 3210
2550 assert (fdchangemax >= fdchangecnt); 3211 assert (fdchangemax >= fdchangecnt);
2551 for (i = 0; i < fdchangecnt; ++i) 3212 for (i = 0; i < fdchangecnt; ++i)
2552 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3213 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2553 3214
2554 assert (anfdmax >= 0); 3215 assert (anfdmax >= 0);
2555 for (i = 0; i < anfdmax; ++i) 3216 for (i = 0; i < anfdmax; ++i)
3217 {
3218 int j = 0;
3219
2556 for (w = anfds [i].head; w; w = w->next) 3220 for (w = w2 = anfds [i].head; w; w = w->next)
2557 { 3221 {
2558 verify_watcher (EV_A_ (W)w); 3222 verify_watcher (EV_A_ (W)w);
3223
3224 if (j++ & 1)
3225 {
3226 assert (("libev: io watcher list contains a loop", w != w2));
3227 w2 = w2->next;
3228 }
3229
2559 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3230 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2560 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3231 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2561 } 3232 }
3233 }
2562 3234
2563 assert (timermax >= timercnt); 3235 assert (timermax >= timercnt);
2564 verify_heap (EV_A_ timers, timercnt); 3236 verify_heap (EV_A_ timers, timercnt);
2565 3237
2566#if EV_PERIODIC_ENABLE 3238#if EV_PERIODIC_ENABLE
… …
2612#endif 3284#endif
2613} 3285}
2614#endif 3286#endif
2615 3287
2616#if EV_MULTIPLICITY 3288#if EV_MULTIPLICITY
3289ecb_cold
2617struct ev_loop * ecb_cold 3290struct ev_loop *
2618#else 3291#else
2619int 3292int
2620#endif 3293#endif
2621ev_default_loop (unsigned int flags) 3294ev_default_loop (unsigned int flags) EV_NOEXCEPT
2622{ 3295{
2623 if (!ev_default_loop_ptr) 3296 if (!ev_default_loop_ptr)
2624 { 3297 {
2625#if EV_MULTIPLICITY 3298#if EV_MULTIPLICITY
2626 EV_P = ev_default_loop_ptr = &default_loop_struct; 3299 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2645 3318
2646 return ev_default_loop_ptr; 3319 return ev_default_loop_ptr;
2647} 3320}
2648 3321
2649void 3322void
2650ev_loop_fork (EV_P) 3323ev_loop_fork (EV_P) EV_NOEXCEPT
2651{ 3324{
2652 postfork = 1; /* must be in line with ev_default_fork */ 3325 postfork = 1;
2653} 3326}
2654 3327
2655/*****************************************************************************/ 3328/*****************************************************************************/
2656 3329
2657void 3330void
… …
2659{ 3332{
2660 EV_CB_INVOKE ((W)w, revents); 3333 EV_CB_INVOKE ((W)w, revents);
2661} 3334}
2662 3335
2663unsigned int 3336unsigned int
2664ev_pending_count (EV_P) 3337ev_pending_count (EV_P) EV_NOEXCEPT
2665{ 3338{
2666 int pri; 3339 int pri;
2667 unsigned int count = 0; 3340 unsigned int count = 0;
2668 3341
2669 for (pri = NUMPRI; pri--; ) 3342 for (pri = NUMPRI; pri--; )
2670 count += pendingcnt [pri]; 3343 count += pendingcnt [pri];
2671 3344
2672 return count; 3345 return count;
2673} 3346}
2674 3347
2675void noinline 3348noinline
3349void
2676ev_invoke_pending (EV_P) 3350ev_invoke_pending (EV_P)
2677{ 3351{
2678 int pri; 3352 pendingpri = NUMPRI;
2679 3353
2680 for (pri = NUMPRI; pri--; ) 3354 do
3355 {
3356 --pendingpri;
3357
3358 /* pendingpri possibly gets modified in the inner loop */
2681 while (pendingcnt [pri]) 3359 while (pendingcnt [pendingpri])
2682 { 3360 {
2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3361 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2684 3362
2685 p->w->pending = 0; 3363 p->w->pending = 0;
2686 EV_CB_INVOKE (p->w, p->events); 3364 EV_CB_INVOKE (p->w, p->events);
2687 EV_FREQUENT_CHECK; 3365 EV_FREQUENT_CHECK;
2688 } 3366 }
3367 }
3368 while (pendingpri);
2689} 3369}
2690 3370
2691#if EV_IDLE_ENABLE 3371#if EV_IDLE_ENABLE
2692/* make idle watchers pending. this handles the "call-idle */ 3372/* make idle watchers pending. this handles the "call-idle */
2693/* only when higher priorities are idle" logic */ 3373/* only when higher priorities are idle" logic */
… …
2751 } 3431 }
2752} 3432}
2753 3433
2754#if EV_PERIODIC_ENABLE 3434#if EV_PERIODIC_ENABLE
2755 3435
2756static void noinline 3436noinline
3437static void
2757periodic_recalc (EV_P_ ev_periodic *w) 3438periodic_recalc (EV_P_ ev_periodic *w)
2758{ 3439{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3440 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3441 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761 3442
… …
2783{ 3464{
2784 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
2785 3466
2786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3467 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2787 { 3468 {
2788 int feed_count = 0;
2789
2790 do 3469 do
2791 { 3470 {
2792 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3471 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2793 3472
2794 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3473 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2821 } 3500 }
2822} 3501}
2823 3502
2824/* simply recalculate all periodics */ 3503/* simply recalculate all periodics */
2825/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3504/* TODO: maybe ensure that at least one event happens when jumping forward? */
2826static void noinline ecb_cold 3505noinline ecb_cold
3506static void
2827periodics_reschedule (EV_P) 3507periodics_reschedule (EV_P)
2828{ 3508{
2829 int i; 3509 int i;
2830 3510
2831 /* adjust periodics after time jump */ 3511 /* adjust periodics after time jump */
… …
2844 reheap (periodics, periodiccnt); 3524 reheap (periodics, periodiccnt);
2845} 3525}
2846#endif 3526#endif
2847 3527
2848/* adjust all timers by a given offset */ 3528/* adjust all timers by a given offset */
2849static void noinline ecb_cold 3529noinline ecb_cold
3530static void
2850timers_reschedule (EV_P_ ev_tstamp adjust) 3531timers_reschedule (EV_P_ ev_tstamp adjust)
2851{ 3532{
2852 int i; 3533 int i;
2853 3534
2854 for (i = 0; i < timercnt; ++i) 3535 for (i = 0; i < timercnt; ++i)
… …
2928 3609
2929 mn_now = ev_rt_now; 3610 mn_now = ev_rt_now;
2930 } 3611 }
2931} 3612}
2932 3613
2933void 3614int
2934ev_run (EV_P_ int flags) 3615ev_run (EV_P_ int flags)
2935{ 3616{
2936#if EV_FEATURE_API 3617#if EV_FEATURE_API
2937 ++loop_depth; 3618 ++loop_depth;
2938#endif 3619#endif
… …
3053 backend_poll (EV_A_ waittime); 3734 backend_poll (EV_A_ waittime);
3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3735 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055 3736
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 3737 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057 3738
3739 ECB_MEMORY_FENCE_ACQUIRE;
3058 if (pipe_write_skipped) 3740 if (pipe_write_skipped)
3059 { 3741 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3742 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3743 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 } 3744 }
… …
3095 loop_done = EVBREAK_CANCEL; 3777 loop_done = EVBREAK_CANCEL;
3096 3778
3097#if EV_FEATURE_API 3779#if EV_FEATURE_API
3098 --loop_depth; 3780 --loop_depth;
3099#endif 3781#endif
3100}
3101 3782
3783 return activecnt;
3784}
3785
3102void 3786void
3103ev_break (EV_P_ int how) 3787ev_break (EV_P_ int how) EV_NOEXCEPT
3104{ 3788{
3105 loop_done = how; 3789 loop_done = how;
3106} 3790}
3107 3791
3108void 3792void
3109ev_ref (EV_P) 3793ev_ref (EV_P) EV_NOEXCEPT
3110{ 3794{
3111 ++activecnt; 3795 ++activecnt;
3112} 3796}
3113 3797
3114void 3798void
3115ev_unref (EV_P) 3799ev_unref (EV_P) EV_NOEXCEPT
3116{ 3800{
3117 --activecnt; 3801 --activecnt;
3118} 3802}
3119 3803
3120void 3804void
3121ev_now_update (EV_P) 3805ev_now_update (EV_P) EV_NOEXCEPT
3122{ 3806{
3123 time_update (EV_A_ 1e100); 3807 time_update (EV_A_ 1e100);
3124} 3808}
3125 3809
3126void 3810void
3127ev_suspend (EV_P) 3811ev_suspend (EV_P) EV_NOEXCEPT
3128{ 3812{
3129 ev_now_update (EV_A); 3813 ev_now_update (EV_A);
3130} 3814}
3131 3815
3132void 3816void
3133ev_resume (EV_P) 3817ev_resume (EV_P) EV_NOEXCEPT
3134{ 3818{
3135 ev_tstamp mn_prev = mn_now; 3819 ev_tstamp mn_prev = mn_now;
3136 3820
3137 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3138 timers_reschedule (EV_A_ mn_now - mn_prev); 3822 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3177 w->pending = 0; 3861 w->pending = 0;
3178 } 3862 }
3179} 3863}
3180 3864
3181int 3865int
3182ev_clear_pending (EV_P_ void *w) 3866ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3183{ 3867{
3184 W w_ = (W)w; 3868 W w_ = (W)w;
3185 int pending = w_->pending; 3869 int pending = w_->pending;
3186 3870
3187 if (expect_true (pending)) 3871 if (expect_true (pending))
… …
3219 w->active = 0; 3903 w->active = 0;
3220} 3904}
3221 3905
3222/*****************************************************************************/ 3906/*****************************************************************************/
3223 3907
3224void noinline 3908noinline
3909void
3225ev_io_start (EV_P_ ev_io *w) 3910ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3226{ 3911{
3227 int fd = w->fd; 3912 int fd = w->fd;
3228 3913
3229 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
3230 return; 3915 return;
… …
3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3918 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3234 3919
3235 EV_FREQUENT_CHECK; 3920 EV_FREQUENT_CHECK;
3236 3921
3237 ev_start (EV_A_ (W)w, 1); 3922 ev_start (EV_A_ (W)w, 1);
3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3923 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3239 wlist_add (&anfds[fd].head, (WL)w); 3924 wlist_add (&anfds[fd].head, (WL)w);
3925
3926 /* common bug, apparently */
3927 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3240 3928
3241 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3929 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3242 w->events &= ~EV__IOFDSET; 3930 w->events &= ~EV__IOFDSET;
3243 3931
3244 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
3245} 3933}
3246 3934
3247void noinline 3935noinline
3936void
3248ev_io_stop (EV_P_ ev_io *w) 3937ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3249{ 3938{
3250 clear_pending (EV_A_ (W)w); 3939 clear_pending (EV_A_ (W)w);
3251 if (expect_false (!ev_is_active (w))) 3940 if (expect_false (!ev_is_active (w)))
3252 return; 3941 return;
3253 3942
… …
3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3950 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3262 3951
3263 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
3264} 3953}
3265 3954
3266void noinline 3955noinline
3956void
3267ev_timer_start (EV_P_ ev_timer *w) 3957ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3268{ 3958{
3269 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3270 return; 3960 return;
3271 3961
3272 ev_at (w) += mn_now; 3962 ev_at (w) += mn_now;
… …
3275 3965
3276 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
3277 3967
3278 ++timercnt; 3968 ++timercnt;
3279 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3969 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3280 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3970 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3281 ANHE_w (timers [ev_active (w)]) = (WT)w; 3971 ANHE_w (timers [ev_active (w)]) = (WT)w;
3282 ANHE_at_cache (timers [ev_active (w)]); 3972 ANHE_at_cache (timers [ev_active (w)]);
3283 upheap (timers, ev_active (w)); 3973 upheap (timers, ev_active (w));
3284 3974
3285 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
3286 3976
3287 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3977 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3288} 3978}
3289 3979
3290void noinline 3980noinline
3981void
3291ev_timer_stop (EV_P_ ev_timer *w) 3982ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3292{ 3983{
3293 clear_pending (EV_A_ (W)w); 3984 clear_pending (EV_A_ (W)w);
3294 if (expect_false (!ev_is_active (w))) 3985 if (expect_false (!ev_is_active (w)))
3295 return; 3986 return;
3296 3987
… …
3315 ev_stop (EV_A_ (W)w); 4006 ev_stop (EV_A_ (W)w);
3316 4007
3317 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
3318} 4009}
3319 4010
3320void noinline 4011noinline
4012void
3321ev_timer_again (EV_P_ ev_timer *w) 4013ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3322{ 4014{
3323 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
3324 4016
3325 clear_pending (EV_A_ (W)w); 4017 clear_pending (EV_A_ (W)w);
3326 4018
… …
3343 4035
3344 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
3345} 4037}
3346 4038
3347ev_tstamp 4039ev_tstamp
3348ev_timer_remaining (EV_P_ ev_timer *w) 4040ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3349{ 4041{
3350 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4042 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3351} 4043}
3352 4044
3353#if EV_PERIODIC_ENABLE 4045#if EV_PERIODIC_ENABLE
3354void noinline 4046noinline
4047void
3355ev_periodic_start (EV_P_ ev_periodic *w) 4048ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3356{ 4049{
3357 if (expect_false (ev_is_active (w))) 4050 if (expect_false (ev_is_active (w)))
3358 return; 4051 return;
3359 4052
3360 if (w->reschedule_cb) 4053 if (w->reschedule_cb)
… …
3369 4062
3370 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3371 4064
3372 ++periodiccnt; 4065 ++periodiccnt;
3373 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4066 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3374 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4067 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3375 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4068 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3376 ANHE_at_cache (periodics [ev_active (w)]); 4069 ANHE_at_cache (periodics [ev_active (w)]);
3377 upheap (periodics, ev_active (w)); 4070 upheap (periodics, ev_active (w));
3378 4071
3379 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
3380 4073
3381 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4074 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3382} 4075}
3383 4076
3384void noinline 4077noinline
4078void
3385ev_periodic_stop (EV_P_ ev_periodic *w) 4079ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3386{ 4080{
3387 clear_pending (EV_A_ (W)w); 4081 clear_pending (EV_A_ (W)w);
3388 if (expect_false (!ev_is_active (w))) 4082 if (expect_false (!ev_is_active (w)))
3389 return; 4083 return;
3390 4084
… …
3407 ev_stop (EV_A_ (W)w); 4101 ev_stop (EV_A_ (W)w);
3408 4102
3409 EV_FREQUENT_CHECK; 4103 EV_FREQUENT_CHECK;
3410} 4104}
3411 4105
3412void noinline 4106noinline
4107void
3413ev_periodic_again (EV_P_ ev_periodic *w) 4108ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3414{ 4109{
3415 /* TODO: use adjustheap and recalculation */ 4110 /* TODO: use adjustheap and recalculation */
3416 ev_periodic_stop (EV_A_ w); 4111 ev_periodic_stop (EV_A_ w);
3417 ev_periodic_start (EV_A_ w); 4112 ev_periodic_start (EV_A_ w);
3418} 4113}
… …
3422# define SA_RESTART 0 4117# define SA_RESTART 0
3423#endif 4118#endif
3424 4119
3425#if EV_SIGNAL_ENABLE 4120#if EV_SIGNAL_ENABLE
3426 4121
3427void noinline 4122noinline
4123void
3428ev_signal_start (EV_P_ ev_signal *w) 4124ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3429{ 4125{
3430 if (expect_false (ev_is_active (w))) 4126 if (expect_false (ev_is_active (w)))
3431 return; 4127 return;
3432 4128
3433 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4129 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3435#if EV_MULTIPLICITY 4131#if EV_MULTIPLICITY
3436 assert (("libev: a signal must not be attached to two different loops", 4132 assert (("libev: a signal must not be attached to two different loops",
3437 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4133 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3438 4134
3439 signals [w->signum - 1].loop = EV_A; 4135 signals [w->signum - 1].loop = EV_A;
4136 ECB_MEMORY_FENCE_RELEASE;
3440#endif 4137#endif
3441 4138
3442 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3443 4140
3444#if EV_USE_SIGNALFD 4141#if EV_USE_SIGNALFD
… …
3503 } 4200 }
3504 4201
3505 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3506} 4203}
3507 4204
3508void noinline 4205noinline
4206void
3509ev_signal_stop (EV_P_ ev_signal *w) 4207ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3510{ 4208{
3511 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3512 if (expect_false (!ev_is_active (w))) 4210 if (expect_false (!ev_is_active (w)))
3513 return; 4211 return;
3514 4212
… …
3545#endif 4243#endif
3546 4244
3547#if EV_CHILD_ENABLE 4245#if EV_CHILD_ENABLE
3548 4246
3549void 4247void
3550ev_child_start (EV_P_ ev_child *w) 4248ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3551{ 4249{
3552#if EV_MULTIPLICITY 4250#if EV_MULTIPLICITY
3553 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4251 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3554#endif 4252#endif
3555 if (expect_false (ev_is_active (w))) 4253 if (expect_false (ev_is_active (w)))
… …
3562 4260
3563 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3564} 4262}
3565 4263
3566void 4264void
3567ev_child_stop (EV_P_ ev_child *w) 4265ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3568{ 4266{
3569 clear_pending (EV_A_ (W)w); 4267 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4268 if (expect_false (!ev_is_active (w)))
3571 return; 4269 return;
3572 4270
… …
3589 4287
3590#define DEF_STAT_INTERVAL 5.0074891 4288#define DEF_STAT_INTERVAL 5.0074891
3591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4289#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3592#define MIN_STAT_INTERVAL 0.1074891 4290#define MIN_STAT_INTERVAL 0.1074891
3593 4291
3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4292noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3595 4293
3596#if EV_USE_INOTIFY 4294#if EV_USE_INOTIFY
3597 4295
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4296/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4297# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3600 4298
3601static void noinline 4299noinline
4300static void
3602infy_add (EV_P_ ev_stat *w) 4301infy_add (EV_P_ ev_stat *w)
3603{ 4302{
3604 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4303 w->wd = inotify_add_watch (fs_fd, w->path,
4304 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4305 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4306 | IN_DONT_FOLLOW | IN_MASK_ADD);
3605 4307
3606 if (w->wd >= 0) 4308 if (w->wd >= 0)
3607 { 4309 {
3608 struct statfs sfs; 4310 struct statfs sfs;
3609 4311
… …
3613 4315
3614 if (!fs_2625) 4316 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4317 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs) 4318 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */ 4319 && (sfs.f_type == 0x1373 /* devfs */
4320 || sfs.f_type == 0x4006 /* fat */
4321 || sfs.f_type == 0x4d44 /* msdos */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */ 4322 || sfs.f_type == 0xEF53 /* ext2/3 */
4323 || sfs.f_type == 0x72b6 /* jffs2 */
4324 || sfs.f_type == 0x858458f6 /* ramfs */
4325 || sfs.f_type == 0x5346544e /* ntfs */
3619 || sfs.f_type == 0x3153464a /* jfs */ 4326 || sfs.f_type == 0x3153464a /* jfs */
4327 || sfs.f_type == 0x9123683e /* btrfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */ 4328 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */ 4329 || sfs.f_type == 0x01021994 /* tmpfs */
3622 || sfs.f_type == 0x58465342 /* xfs */)) 4330 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4331 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else 4332 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4333 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3626 } 4334 }
… …
3661 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4369 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3662 ev_timer_again (EV_A_ &w->timer); 4370 ev_timer_again (EV_A_ &w->timer);
3663 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4371 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3664} 4372}
3665 4373
3666static void noinline 4374noinline
4375static void
3667infy_del (EV_P_ ev_stat *w) 4376infy_del (EV_P_ ev_stat *w)
3668{ 4377{
3669 int slot; 4378 int slot;
3670 int wd = w->wd; 4379 int wd = w->wd;
3671 4380
… …
3678 4387
3679 /* remove this watcher, if others are watching it, they will rearm */ 4388 /* remove this watcher, if others are watching it, they will rearm */
3680 inotify_rm_watch (fs_fd, wd); 4389 inotify_rm_watch (fs_fd, wd);
3681} 4390}
3682 4391
3683static void noinline 4392noinline
4393static void
3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4394infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3685{ 4395{
3686 if (slot < 0) 4396 if (slot < 0)
3687 /* overflow, need to check for all hash slots */ 4397 /* overflow, need to check for all hash slots */
3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4398 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3724 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4434 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len; 4435 ofs += sizeof (struct inotify_event) + ev->len;
3726 } 4436 }
3727} 4437}
3728 4438
3729inline_size void ecb_cold 4439inline_size ecb_cold
4440void
3730ev_check_2625 (EV_P) 4441ev_check_2625 (EV_P)
3731{ 4442{
3732 /* kernels < 2.6.25 are borked 4443 /* kernels < 2.6.25 are borked
3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4444 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3734 */ 4445 */
… …
3739} 4450}
3740 4451
3741inline_size int 4452inline_size int
3742infy_newfd (void) 4453infy_newfd (void)
3743{ 4454{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4455#if defined IN_CLOEXEC && defined IN_NONBLOCK
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4456 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0) 4457 if (fd >= 0)
3747 return fd; 4458 return fd;
3748#endif 4459#endif
3749 return inotify_init (); 4460 return inotify_init ();
… …
3824#else 4535#else
3825# define EV_LSTAT(p,b) lstat (p, b) 4536# define EV_LSTAT(p,b) lstat (p, b)
3826#endif 4537#endif
3827 4538
3828void 4539void
3829ev_stat_stat (EV_P_ ev_stat *w) 4540ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3830{ 4541{
3831 if (lstat (w->path, &w->attr) < 0) 4542 if (lstat (w->path, &w->attr) < 0)
3832 w->attr.st_nlink = 0; 4543 w->attr.st_nlink = 0;
3833 else if (!w->attr.st_nlink) 4544 else if (!w->attr.st_nlink)
3834 w->attr.st_nlink = 1; 4545 w->attr.st_nlink = 1;
3835} 4546}
3836 4547
3837static void noinline 4548noinline
4549static void
3838stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4550stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3839{ 4551{
3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4552 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3841 4553
3842 ev_statdata prev = w->attr; 4554 ev_statdata prev = w->attr;
… …
3873 ev_feed_event (EV_A_ w, EV_STAT); 4585 ev_feed_event (EV_A_ w, EV_STAT);
3874 } 4586 }
3875} 4587}
3876 4588
3877void 4589void
3878ev_stat_start (EV_P_ ev_stat *w) 4590ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3879{ 4591{
3880 if (expect_false (ev_is_active (w))) 4592 if (expect_false (ev_is_active (w)))
3881 return; 4593 return;
3882 4594
3883 ev_stat_stat (EV_A_ w); 4595 ev_stat_stat (EV_A_ w);
… …
3904 4616
3905 EV_FREQUENT_CHECK; 4617 EV_FREQUENT_CHECK;
3906} 4618}
3907 4619
3908void 4620void
3909ev_stat_stop (EV_P_ ev_stat *w) 4621ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3910{ 4622{
3911 clear_pending (EV_A_ (W)w); 4623 clear_pending (EV_A_ (W)w);
3912 if (expect_false (!ev_is_active (w))) 4624 if (expect_false (!ev_is_active (w)))
3913 return; 4625 return;
3914 4626
… …
3930} 4642}
3931#endif 4643#endif
3932 4644
3933#if EV_IDLE_ENABLE 4645#if EV_IDLE_ENABLE
3934void 4646void
3935ev_idle_start (EV_P_ ev_idle *w) 4647ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3936{ 4648{
3937 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3938 return; 4650 return;
3939 4651
3940 pri_adjust (EV_A_ (W)w); 4652 pri_adjust (EV_A_ (W)w);
… …
3945 int active = ++idlecnt [ABSPRI (w)]; 4657 int active = ++idlecnt [ABSPRI (w)];
3946 4658
3947 ++idleall; 4659 ++idleall;
3948 ev_start (EV_A_ (W)w, active); 4660 ev_start (EV_A_ (W)w, active);
3949 4661
3950 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4662 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3951 idles [ABSPRI (w)][active - 1] = w; 4663 idles [ABSPRI (w)][active - 1] = w;
3952 } 4664 }
3953 4665
3954 EV_FREQUENT_CHECK; 4666 EV_FREQUENT_CHECK;
3955} 4667}
3956 4668
3957void 4669void
3958ev_idle_stop (EV_P_ ev_idle *w) 4670ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3959{ 4671{
3960 clear_pending (EV_A_ (W)w); 4672 clear_pending (EV_A_ (W)w);
3961 if (expect_false (!ev_is_active (w))) 4673 if (expect_false (!ev_is_active (w)))
3962 return; 4674 return;
3963 4675
… …
3977} 4689}
3978#endif 4690#endif
3979 4691
3980#if EV_PREPARE_ENABLE 4692#if EV_PREPARE_ENABLE
3981void 4693void
3982ev_prepare_start (EV_P_ ev_prepare *w) 4694ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3983{ 4695{
3984 if (expect_false (ev_is_active (w))) 4696 if (expect_false (ev_is_active (w)))
3985 return; 4697 return;
3986 4698
3987 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3988 4700
3989 ev_start (EV_A_ (W)w, ++preparecnt); 4701 ev_start (EV_A_ (W)w, ++preparecnt);
3990 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4702 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3991 prepares [preparecnt - 1] = w; 4703 prepares [preparecnt - 1] = w;
3992 4704
3993 EV_FREQUENT_CHECK; 4705 EV_FREQUENT_CHECK;
3994} 4706}
3995 4707
3996void 4708void
3997ev_prepare_stop (EV_P_ ev_prepare *w) 4709ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3998{ 4710{
3999 clear_pending (EV_A_ (W)w); 4711 clear_pending (EV_A_ (W)w);
4000 if (expect_false (!ev_is_active (w))) 4712 if (expect_false (!ev_is_active (w)))
4001 return; 4713 return;
4002 4714
… …
4015} 4727}
4016#endif 4728#endif
4017 4729
4018#if EV_CHECK_ENABLE 4730#if EV_CHECK_ENABLE
4019void 4731void
4020ev_check_start (EV_P_ ev_check *w) 4732ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4021{ 4733{
4022 if (expect_false (ev_is_active (w))) 4734 if (expect_false (ev_is_active (w)))
4023 return; 4735 return;
4024 4736
4025 EV_FREQUENT_CHECK; 4737 EV_FREQUENT_CHECK;
4026 4738
4027 ev_start (EV_A_ (W)w, ++checkcnt); 4739 ev_start (EV_A_ (W)w, ++checkcnt);
4028 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4740 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4029 checks [checkcnt - 1] = w; 4741 checks [checkcnt - 1] = w;
4030 4742
4031 EV_FREQUENT_CHECK; 4743 EV_FREQUENT_CHECK;
4032} 4744}
4033 4745
4034void 4746void
4035ev_check_stop (EV_P_ ev_check *w) 4747ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4036{ 4748{
4037 clear_pending (EV_A_ (W)w); 4749 clear_pending (EV_A_ (W)w);
4038 if (expect_false (!ev_is_active (w))) 4750 if (expect_false (!ev_is_active (w)))
4039 return; 4751 return;
4040 4752
… …
4052 EV_FREQUENT_CHECK; 4764 EV_FREQUENT_CHECK;
4053} 4765}
4054#endif 4766#endif
4055 4767
4056#if EV_EMBED_ENABLE 4768#if EV_EMBED_ENABLE
4057void noinline 4769noinline
4770void
4058ev_embed_sweep (EV_P_ ev_embed *w) 4771ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4059{ 4772{
4060 ev_run (w->other, EVRUN_NOWAIT); 4773 ev_run (w->other, EVRUN_NOWAIT);
4061} 4774}
4062 4775
4063static void 4776static void
… …
4111 ev_idle_stop (EV_A_ idle); 4824 ev_idle_stop (EV_A_ idle);
4112} 4825}
4113#endif 4826#endif
4114 4827
4115void 4828void
4116ev_embed_start (EV_P_ ev_embed *w) 4829ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4117{ 4830{
4118 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4119 return; 4832 return;
4120 4833
4121 { 4834 {
… …
4142 4855
4143 EV_FREQUENT_CHECK; 4856 EV_FREQUENT_CHECK;
4144} 4857}
4145 4858
4146void 4859void
4147ev_embed_stop (EV_P_ ev_embed *w) 4860ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4148{ 4861{
4149 clear_pending (EV_A_ (W)w); 4862 clear_pending (EV_A_ (W)w);
4150 if (expect_false (!ev_is_active (w))) 4863 if (expect_false (!ev_is_active (w)))
4151 return; 4864 return;
4152 4865
… …
4162} 4875}
4163#endif 4876#endif
4164 4877
4165#if EV_FORK_ENABLE 4878#if EV_FORK_ENABLE
4166void 4879void
4167ev_fork_start (EV_P_ ev_fork *w) 4880ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4168{ 4881{
4169 if (expect_false (ev_is_active (w))) 4882 if (expect_false (ev_is_active (w)))
4170 return; 4883 return;
4171 4884
4172 EV_FREQUENT_CHECK; 4885 EV_FREQUENT_CHECK;
4173 4886
4174 ev_start (EV_A_ (W)w, ++forkcnt); 4887 ev_start (EV_A_ (W)w, ++forkcnt);
4175 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4888 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4176 forks [forkcnt - 1] = w; 4889 forks [forkcnt - 1] = w;
4177 4890
4178 EV_FREQUENT_CHECK; 4891 EV_FREQUENT_CHECK;
4179} 4892}
4180 4893
4181void 4894void
4182ev_fork_stop (EV_P_ ev_fork *w) 4895ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4183{ 4896{
4184 clear_pending (EV_A_ (W)w); 4897 clear_pending (EV_A_ (W)w);
4185 if (expect_false (!ev_is_active (w))) 4898 if (expect_false (!ev_is_active (w)))
4186 return; 4899 return;
4187 4900
… …
4200} 4913}
4201#endif 4914#endif
4202 4915
4203#if EV_CLEANUP_ENABLE 4916#if EV_CLEANUP_ENABLE
4204void 4917void
4205ev_cleanup_start (EV_P_ ev_cleanup *w) 4918ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4206{ 4919{
4207 if (expect_false (ev_is_active (w))) 4920 if (expect_false (ev_is_active (w)))
4208 return; 4921 return;
4209 4922
4210 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4211 4924
4212 ev_start (EV_A_ (W)w, ++cleanupcnt); 4925 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4926 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4214 cleanups [cleanupcnt - 1] = w; 4927 cleanups [cleanupcnt - 1] = w;
4215 4928
4216 /* cleanup watchers should never keep a refcount on the loop */ 4929 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A); 4930 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
4219} 4932}
4220 4933
4221void 4934void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w) 4935ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4223{ 4936{
4224 clear_pending (EV_A_ (W)w); 4937 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w))) 4938 if (expect_false (!ev_is_active (w)))
4226 return; 4939 return;
4227 4940
… …
4241} 4954}
4242#endif 4955#endif
4243 4956
4244#if EV_ASYNC_ENABLE 4957#if EV_ASYNC_ENABLE
4245void 4958void
4246ev_async_start (EV_P_ ev_async *w) 4959ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4247{ 4960{
4248 if (expect_false (ev_is_active (w))) 4961 if (expect_false (ev_is_active (w)))
4249 return; 4962 return;
4250 4963
4251 w->sent = 0; 4964 w->sent = 0;
… …
4253 evpipe_init (EV_A); 4966 evpipe_init (EV_A);
4254 4967
4255 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
4256 4969
4257 ev_start (EV_A_ (W)w, ++asynccnt); 4970 ev_start (EV_A_ (W)w, ++asynccnt);
4258 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4971 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4259 asyncs [asynccnt - 1] = w; 4972 asyncs [asynccnt - 1] = w;
4260 4973
4261 EV_FREQUENT_CHECK; 4974 EV_FREQUENT_CHECK;
4262} 4975}
4263 4976
4264void 4977void
4265ev_async_stop (EV_P_ ev_async *w) 4978ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4266{ 4979{
4267 clear_pending (EV_A_ (W)w); 4980 clear_pending (EV_A_ (W)w);
4268 if (expect_false (!ev_is_active (w))) 4981 if (expect_false (!ev_is_active (w)))
4269 return; 4982 return;
4270 4983
… …
4281 4994
4282 EV_FREQUENT_CHECK; 4995 EV_FREQUENT_CHECK;
4283} 4996}
4284 4997
4285void 4998void
4286ev_async_send (EV_P_ ev_async *w) 4999ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4287{ 5000{
4288 w->sent = 1; 5001 w->sent = 1;
4289 evpipe_write (EV_A_ &async_pending); 5002 evpipe_write (EV_A_ &async_pending);
4290} 5003}
4291#endif 5004#endif
… …
4328 5041
4329 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5042 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4330} 5043}
4331 5044
4332void 5045void
4333ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5046ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4334{ 5047{
4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4336
4337 if (expect_false (!once))
4338 {
4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4340 return;
4341 }
4342 5049
4343 once->cb = cb; 5050 once->cb = cb;
4344 once->arg = arg; 5051 once->arg = arg;
4345 5052
4346 ev_init (&once->io, once_cb_io); 5053 ev_init (&once->io, once_cb_io);
… …
4359} 5066}
4360 5067
4361/*****************************************************************************/ 5068/*****************************************************************************/
4362 5069
4363#if EV_WALK_ENABLE 5070#if EV_WALK_ENABLE
4364void ecb_cold 5071ecb_cold
5072void
4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5073ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4366{ 5074{
4367 int i, j; 5075 int i, j;
4368 ev_watcher_list *wl, *wn; 5076 ev_watcher_list *wl, *wn;
4369 5077
4370 if (types & (EV_IO | EV_EMBED)) 5078 if (types & (EV_IO | EV_EMBED))

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