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Comparing libev/ev.c (file contents):
Revision 1.399 by root, Mon Sep 26 12:32:21 2011 UTC vs.
Revision 1.497 by root, Tue Jun 25 04:52:30 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
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
217
188#ifndef _WIN32 218#ifndef _WIN32
189# include <sys/time.h> 219# include <sys/time.h>
190# include <sys/wait.h> 220# include <sys/wait.h>
191# include <unistd.h> 221# include <unistd.h>
192#else 222#else
193# include <io.h> 223# include <io.h>
194# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
195# include <windows.h> 226# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
198# endif 229# endif
199# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
200#endif 231#endif
201 232
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
211 234
212/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 236#if defined EV_NSIG
214/* use what's provided */ 237/* use what's provided */
215#elif defined (NSIG) 238#elif defined NSIG
216# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 240#elif defined _NSIG
218# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 242#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 244#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 248#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 250#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 254#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 256#else
234# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 258#endif
239 259
240#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
242#endif 262#endif
243 263
244#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 267# else
248# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
249# endif 269# endif
250#endif 270#endif
251 271
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
252#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 284# else
256# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
257# endif 286# endif
258#endif 287#endif
… …
295 324
296#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 326# define EV_USE_PORT 0
298#endif 327#endif
299 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
300#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 340# else
304# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
345 382
346#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 385#endif
349 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
350/* 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, */
351/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 406# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
358# else 411# else
… …
361# endif 414# endif
362#endif 415#endif
363 416
364/* 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 */
365 418
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
375#endif 422#endif
376 423
… …
384# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
385#endif 432#endif
386 433
387#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
388/* 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 */
389# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
391# endif 446# endif
392#endif 447#endif
393 448
394#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
395# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
397/* 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 */
398# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
401# endif 456# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 457#endif
407 458
408#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
409/* 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 */
410# include <stdint.h> 461# include <stdint.h>
… …
467/* 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 */
468/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
469/* 520/*
470 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
471 * 522 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 525 * All rights reserved.
475 * 526 *
476 * 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-
477 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
491 * 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;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * 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.
496 */ 558 */
497 559
498#ifndef ECB_H 560#ifndef ECB_H
499#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
500 565
501#ifdef _WIN32 566#ifdef _WIN32
502 typedef signed char int8_t; 567 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
514 #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
515#else 589#else
516 #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
517#endif 608#endif
518 609
519/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 613 * or so.
523 * 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
524 * 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.
525 */ 616 */
526#ifndef ECB_GCC_VERSION
527 #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__
528 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
529 #else 619#else
530 #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)))
531 #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
532#endif 662#endif
533 663
534/*****************************************************************************/ 664/*****************************************************************************/
535 665
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 668
539#if ECB_NO_THREADS || ECB_NO_SMP 669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 675#endif
542 676
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
543#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
545 #if __i386__ 689 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 693 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
561 #endif 738 #endif
562 #endif 739 #endif
563#endif 740#endif
564 741
565#ifndef ECB_MEMORY_FENCE 742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 770 #elif defined _WIN32
576 #include <WinNT.h> 771 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
578 #endif 792 #endif
579#endif 793#endif
580 794
581#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 810 #endif
597#endif 811#endif
598 812
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 815#endif
602 816
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 819#endif
606 820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
607/*****************************************************************************/ 825/*****************************************************************************/
608 826
609#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
610
611#if __cplusplus
612 #define ecb_inline static inline 828 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
615#elif ECB_C99 831#elif ECB_C99
616 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
630 846
631#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
635 852
636#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
637 854
638#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
639 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else 879#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
648#endif 881#endif
649 882
650/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5) 884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
652 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
653#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
654 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
655#endif 890#endif
656 891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
657#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
659#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
662 927
663#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
678/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
681 946
682/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */ 958 /* no popcountll */
691#else 959#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
693 ecb_function_ int 961 ecb_function_ ecb_const int
694 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
695 { 963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
696 int r = 0; 969 int r = 0;
697 970
698 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
699 972
700#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
710 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
712#endif 985#endif
713 986
714 return r; 987 return r;
988#endif
715 } 989 }
716 990
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
718 ecb_function_ int 992 ecb_function_ ecb_const int
719 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
720 { 994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
721 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
723 } 1003 }
724 1004
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
726 ecb_function_ int 1006 ecb_function_ ecb_const int
727 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
728 { 1008 {
729 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101; 1012 x *= 0x01010101;
733 1013
734 return x >> 24; 1014 return x >> 24;
735 } 1015 }
736 1016
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
738 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
739 { 1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
740 int r = 0; 1025 int r = 0;
741 1026
742 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
747 1032
748 return r; 1033 return r;
1034#endif
749 } 1035 }
750 1036
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
752 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
753 { 1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
754 int r = 0; 1045 int r = 0;
755 1046
756 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
757 1048
758 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
759 } 1051 }
760#endif 1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
761 1088
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 1090/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
765ecb_function_ int 1092ecb_function_ ecb_const int
766ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
767{ 1094{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769} 1096}
770 1097
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
779 1106
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788 1115
789#if ECB_GCC_VERSION(4,3) 1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
791 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x) 1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
793#else 1129#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
795 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
796 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
797 { 1133 {
798 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
799 } 1135 }
800 1136
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
802 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
803 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
804 { 1140 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 } 1142 }
807 1143
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
809 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
810 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
811 { 1147 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 } 1149 }
814#endif 1150#endif
815 1151
816#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
817 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
818#else 1154#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
821 ecb_function_ void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
822#endif 1158#endif
823 1159
824/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 1162
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
828ecb_function_ unsigned char 1164ecb_inline ecb_const uint32_t
829ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
830{ 1166{
831 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
833} 1189}
834 1190
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
839 1195
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1198#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif 1200#endif
845 1201
846#if __cplusplus 1202#if ECB_CPP
847 template<typename T> 1203 template<typename T>
848 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
849 { 1205 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 } 1207 }
… …
868 } 1224 }
869#else 1225#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1227#endif
872 1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
873#endif 1534#endif
874 1535
875/* ECB.H END */ 1536/* ECB.H END */
876 1537
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1539/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1541 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops. 1542 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1543 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1544 * which will then provide the memory fences.
884 */ 1545 */
885# error "memory fences not defined for your architecture, please report" 1546# error "memory fences not defined for your architecture, please report"
886#endif 1547#endif
… …
898#define inline_size ecb_inline 1559#define inline_size ecb_inline
899 1560
900#if EV_FEATURE_CODE 1561#if EV_FEATURE_CODE
901# define inline_speed ecb_inline 1562# define inline_speed ecb_inline
902#else 1563#else
903# define inline_speed static noinline 1564# define inline_speed noinline static
904#endif 1565#endif
905 1566
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1567#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907 1568
908#if EV_MINPRI == EV_MAXPRI 1569#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0) 1570# define ABSPRI(w) (((W)w), 0)
910#else 1571#else
911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1572# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif 1573#endif
913 1574
914#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1575#define EMPTY /* required for microsofts broken pseudo-c compiler */
915#define EMPTY2(a,b) /* used to suppress some warnings */
916 1576
917typedef ev_watcher *W; 1577typedef ev_watcher *W;
918typedef ev_watcher_list *WL; 1578typedef ev_watcher_list *WL;
919typedef ev_watcher_time *WT; 1579typedef ev_watcher_time *WT;
920 1580
… …
945# include "ev_win32.c" 1605# include "ev_win32.c"
946#endif 1606#endif
947 1607
948/*****************************************************************************/ 1608/*****************************************************************************/
949 1609
1610#if EV_USE_LINUXAIO
1611# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1612#endif
1613
950/* define a suitable floor function (only used by periodics atm) */ 1614/* define a suitable floor function (only used by periodics atm) */
951 1615
952#if EV_USE_FLOOR 1616#if EV_USE_FLOOR
953# include <math.h> 1617# include <math.h>
954# define ev_floor(v) floor (v) 1618# define ev_floor(v) floor (v)
955#else 1619#else
956 1620
957#include <float.h> 1621#include <float.h>
958 1622
959/* a floor() replacement function, should be independent of ev_tstamp type */ 1623/* a floor() replacement function, should be independent of ev_tstamp type */
1624noinline
960static ev_tstamp noinline 1625static ev_tstamp
961ev_floor (ev_tstamp v) 1626ev_floor (ev_tstamp v)
962{ 1627{
963 /* the choice of shift factor is not terribly important */ 1628 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1629#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1630 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
997 1662
998#ifdef __linux 1663#ifdef __linux
999# include <sys/utsname.h> 1664# include <sys/utsname.h>
1000#endif 1665#endif
1001 1666
1002static unsigned int noinline ecb_cold 1667noinline ecb_cold
1668static unsigned int
1003ev_linux_version (void) 1669ev_linux_version (void)
1004{ 1670{
1005#ifdef __linux 1671#ifdef __linux
1006 unsigned int v = 0; 1672 unsigned int v = 0;
1007 struct utsname buf; 1673 struct utsname buf;
… …
1036} 1702}
1037 1703
1038/*****************************************************************************/ 1704/*****************************************************************************/
1039 1705
1040#if EV_AVOID_STDIO 1706#if EV_AVOID_STDIO
1041static void noinline ecb_cold 1707noinline ecb_cold
1708static void
1042ev_printerr (const char *msg) 1709ev_printerr (const char *msg)
1043{ 1710{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1711 write (STDERR_FILENO, msg, strlen (msg));
1045} 1712}
1046#endif 1713#endif
1047 1714
1048static void (*syserr_cb)(const char *msg); 1715static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1049 1716
1050void ecb_cold 1717ecb_cold
1718void
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1719ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1052{ 1720{
1053 syserr_cb = cb; 1721 syserr_cb = cb;
1054} 1722}
1055 1723
1056static void noinline ecb_cold 1724noinline ecb_cold
1725static void
1057ev_syserr (const char *msg) 1726ev_syserr (const char *msg)
1058{ 1727{
1059 if (!msg) 1728 if (!msg)
1060 msg = "(libev) system error"; 1729 msg = "(libev) system error";
1061 1730
… …
1074 abort (); 1743 abort ();
1075 } 1744 }
1076} 1745}
1077 1746
1078static void * 1747static void *
1079ev_realloc_emul (void *ptr, long size) 1748ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1080{ 1749{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1750 /* some systems, notably openbsd and darwin, fail to properly
1085 * implement realloc (x, 0) (as required by both ansi c-89 and 1751 * implement realloc (x, 0) (as required by both ansi c-89 and
1086 * the single unix specification, so work around them here. 1752 * the single unix specification, so work around them here.
1753 * recently, also (at least) fedora and debian started breaking it,
1754 * despite documenting it otherwise.
1087 */ 1755 */
1088 1756
1089 if (size) 1757 if (size)
1090 return realloc (ptr, size); 1758 return realloc (ptr, size);
1091 1759
1092 free (ptr); 1760 free (ptr);
1093 return 0; 1761 return 0;
1094#endif
1095} 1762}
1096 1763
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1764static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1098 1765
1099void ecb_cold 1766ecb_cold
1767void
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1768ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1101{ 1769{
1102 alloc = cb; 1770 alloc = cb;
1103} 1771}
1104 1772
1105inline_speed void * 1773inline_speed void *
… …
1132typedef struct 1800typedef struct
1133{ 1801{
1134 WL head; 1802 WL head;
1135 unsigned char events; /* the events watched for */ 1803 unsigned char events; /* the events watched for */
1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1804 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1805 unsigned char emask; /* some backends store the actual kernel mask in here */
1138 unsigned char unused; 1806 unsigned char unused;
1139#if EV_USE_EPOLL 1807#if EV_USE_EPOLL
1140 unsigned int egen; /* generation counter to counter epoll bugs */ 1808 unsigned int egen; /* generation counter to counter epoll bugs */
1141#endif 1809#endif
1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1810#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1193 #undef VAR 1861 #undef VAR
1194 }; 1862 };
1195 #include "ev_wrap.h" 1863 #include "ev_wrap.h"
1196 1864
1197 static struct ev_loop default_loop_struct; 1865 static struct ev_loop default_loop_struct;
1198 struct ev_loop *ev_default_loop_ptr; 1866 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1199 1867
1200#else 1868#else
1201 1869
1202 ev_tstamp ev_rt_now; 1870 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1203 #define VAR(name,decl) static decl; 1871 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1872 #include "ev_vars.h"
1205 #undef VAR 1873 #undef VAR
1206 1874
1207 static int ev_default_loop_ptr; 1875 static int ev_default_loop_ptr;
… …
1222 1890
1223/*****************************************************************************/ 1891/*****************************************************************************/
1224 1892
1225#ifndef EV_HAVE_EV_TIME 1893#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1894ev_tstamp
1227ev_time (void) 1895ev_time (void) EV_NOEXCEPT
1228{ 1896{
1229#if EV_USE_REALTIME 1897#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1898 if (expect_true (have_realtime))
1231 { 1899 {
1232 struct timespec ts; 1900 struct timespec ts;
… …
1256 return ev_time (); 1924 return ev_time ();
1257} 1925}
1258 1926
1259#if EV_MULTIPLICITY 1927#if EV_MULTIPLICITY
1260ev_tstamp 1928ev_tstamp
1261ev_now (EV_P) 1929ev_now (EV_P) EV_NOEXCEPT
1262{ 1930{
1263 return ev_rt_now; 1931 return ev_rt_now;
1264} 1932}
1265#endif 1933#endif
1266 1934
1267void 1935void
1268ev_sleep (ev_tstamp delay) 1936ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1269{ 1937{
1270 if (delay > 0.) 1938 if (delay > 0.)
1271 { 1939 {
1272#if EV_USE_NANOSLEEP 1940#if EV_USE_NANOSLEEP
1273 struct timespec ts; 1941 struct timespec ts;
1274 1942
1275 EV_TS_SET (ts, delay); 1943 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 1944 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 1945#elif defined _WIN32
1946 /* maybe this should round up, as ms is very low resolution */
1947 /* compared to select (µs) or nanosleep (ns) */
1278 Sleep ((unsigned long)(delay * 1e3)); 1948 Sleep ((unsigned long)(delay * 1e3));
1279#else 1949#else
1280 struct timeval tv; 1950 struct timeval tv;
1281 1951
1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1952 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1301 1971
1302 do 1972 do
1303 ncur <<= 1; 1973 ncur <<= 1;
1304 while (cnt > ncur); 1974 while (cnt > ncur);
1305 1975
1306 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1976 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1977 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1308 { 1978 {
1309 ncur *= elem; 1979 ncur *= elem;
1310 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1980 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1311 ncur = ncur - sizeof (void *) * 4; 1981 ncur = ncur - sizeof (void *) * 4;
… …
1313 } 1983 }
1314 1984
1315 return ncur; 1985 return ncur;
1316} 1986}
1317 1987
1318static void * noinline ecb_cold 1988noinline ecb_cold
1989static void *
1319array_realloc (int elem, void *base, int *cur, int cnt) 1990array_realloc (int elem, void *base, int *cur, int cnt)
1320{ 1991{
1321 *cur = array_nextsize (elem, *cur, cnt); 1992 *cur = array_nextsize (elem, *cur, cnt);
1322 return ev_realloc (base, elem * *cur); 1993 return ev_realloc (base, elem * *cur);
1323} 1994}
1324 1995
1996#define array_needsize_noinit(base,offset,count)
1997
1325#define array_init_zero(base,count) \ 1998#define array_needsize_zerofill(base,offset,count) \
1326 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1999 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1327 2000
1328#define array_needsize(type,base,cur,cnt,init) \ 2001#define array_needsize(type,base,cur,cnt,init) \
1329 if (expect_false ((cnt) > (cur))) \ 2002 if (expect_false ((cnt) > (cur))) \
1330 { \ 2003 { \
1331 int ecb_unused ocur_ = (cur); \ 2004 ecb_unused int ocur_ = (cur); \
1332 (base) = (type *)array_realloc \ 2005 (base) = (type *)array_realloc \
1333 (sizeof (type), (base), &(cur), (cnt)); \ 2006 (sizeof (type), (base), &(cur), (cnt)); \
1334 init ((base) + (ocur_), (cur) - ocur_); \ 2007 init ((base), ocur_, ((cur) - ocur_)); \
1335 } 2008 }
1336 2009
1337#if 0 2010#if 0
1338#define array_slim(type,stem) \ 2011#define array_slim(type,stem) \
1339 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2012 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1349 2022
1350/*****************************************************************************/ 2023/*****************************************************************************/
1351 2024
1352/* dummy callback for pending events */ 2025/* dummy callback for pending events */
1353static void noinline 2026noinline
2027static void
1354pendingcb (EV_P_ ev_prepare *w, int revents) 2028pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 2029{
1356} 2030}
1357 2031
1358void noinline 2032noinline
2033void
1359ev_feed_event (EV_P_ void *w, int revents) 2034ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1360{ 2035{
1361 W w_ = (W)w; 2036 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 2037 int pri = ABSPRI (w_);
1363 2038
1364 if (expect_false (w_->pending)) 2039 if (expect_false (w_->pending))
1365 pendings [pri][w_->pending - 1].events |= revents; 2040 pendings [pri][w_->pending - 1].events |= revents;
1366 else 2041 else
1367 { 2042 {
1368 w_->pending = ++pendingcnt [pri]; 2043 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2044 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1370 pendings [pri][w_->pending - 1].w = w_; 2045 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 2046 pendings [pri][w_->pending - 1].events = revents;
1372 } 2047 }
2048
2049 pendingpri = NUMPRI - 1;
1373} 2050}
1374 2051
1375inline_speed void 2052inline_speed void
1376feed_reverse (EV_P_ W w) 2053feed_reverse (EV_P_ W w)
1377{ 2054{
1378 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1379 rfeeds [rfeedcnt++] = w; 2056 rfeeds [rfeedcnt++] = w;
1380} 2057}
1381 2058
1382inline_size void 2059inline_size void
1383feed_reverse_done (EV_P_ int revents) 2060feed_reverse_done (EV_P_ int revents)
… …
1423 if (expect_true (!anfd->reify)) 2100 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 2101 fd_event_nocheck (EV_A_ fd, revents);
1425} 2102}
1426 2103
1427void 2104void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 2105ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1429{ 2106{
1430 if (fd >= 0 && fd < anfdmax) 2107 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 2108 fd_event_nocheck (EV_A_ fd, revents);
1432} 2109}
1433 2110
… …
1470 ev_io *w; 2147 ev_io *w;
1471 2148
1472 unsigned char o_events = anfd->events; 2149 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify; 2150 unsigned char o_reify = anfd->reify;
1474 2151
1475 anfd->reify = 0; 2152 anfd->reify = 0;
1476 2153
1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1478 { 2155 {
1479 anfd->events = 0; 2156 anfd->events = 0;
1480 2157
… …
1491 2168
1492 fdchangecnt = 0; 2169 fdchangecnt = 0;
1493} 2170}
1494 2171
1495/* something about the given fd changed */ 2172/* something about the given fd changed */
1496inline_size void 2173inline_size
2174void
1497fd_change (EV_P_ int fd, int flags) 2175fd_change (EV_P_ int fd, int flags)
1498{ 2176{
1499 unsigned char reify = anfds [fd].reify; 2177 unsigned char reify = anfds [fd].reify;
1500 anfds [fd].reify |= flags; 2178 anfds [fd].reify |= flags;
1501 2179
1502 if (expect_true (!reify)) 2180 if (expect_true (!reify))
1503 { 2181 {
1504 ++fdchangecnt; 2182 ++fdchangecnt;
1505 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1506 fdchanges [fdchangecnt - 1] = fd; 2184 fdchanges [fdchangecnt - 1] = fd;
1507 } 2185 }
1508} 2186}
1509 2187
1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1511inline_speed void ecb_cold 2189inline_speed ecb_cold void
1512fd_kill (EV_P_ int fd) 2190fd_kill (EV_P_ int fd)
1513{ 2191{
1514 ev_io *w; 2192 ev_io *w;
1515 2193
1516 while ((w = (ev_io *)anfds [fd].head)) 2194 while ((w = (ev_io *)anfds [fd].head))
… …
1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1520 } 2198 }
1521} 2199}
1522 2200
1523/* check whether the given fd is actually valid, for error recovery */ 2201/* check whether the given fd is actually valid, for error recovery */
1524inline_size int ecb_cold 2202inline_size ecb_cold int
1525fd_valid (int fd) 2203fd_valid (int fd)
1526{ 2204{
1527#ifdef _WIN32 2205#ifdef _WIN32
1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1529#else 2207#else
1530 return fcntl (fd, F_GETFD) != -1; 2208 return fcntl (fd, F_GETFD) != -1;
1531#endif 2209#endif
1532} 2210}
1533 2211
1534/* called on EBADF to verify fds */ 2212/* called on EBADF to verify fds */
1535static void noinline ecb_cold 2213noinline ecb_cold
2214static void
1536fd_ebadf (EV_P) 2215fd_ebadf (EV_P)
1537{ 2216{
1538 int fd; 2217 int fd;
1539 2218
1540 for (fd = 0; fd < anfdmax; ++fd) 2219 for (fd = 0; fd < anfdmax; ++fd)
… …
1542 if (!fd_valid (fd) && errno == EBADF) 2221 if (!fd_valid (fd) && errno == EBADF)
1543 fd_kill (EV_A_ fd); 2222 fd_kill (EV_A_ fd);
1544} 2223}
1545 2224
1546/* called on ENOMEM in select/poll to kill some fds and retry */ 2225/* called on ENOMEM in select/poll to kill some fds and retry */
1547static void noinline ecb_cold 2226noinline ecb_cold
2227static void
1548fd_enomem (EV_P) 2228fd_enomem (EV_P)
1549{ 2229{
1550 int fd; 2230 int fd;
1551 2231
1552 for (fd = anfdmax; fd--; ) 2232 for (fd = anfdmax; fd--; )
… …
1556 break; 2236 break;
1557 } 2237 }
1558} 2238}
1559 2239
1560/* usually called after fork if backend needs to re-arm all fds from scratch */ 2240/* usually called after fork if backend needs to re-arm all fds from scratch */
1561static void noinline 2241noinline
2242static void
1562fd_rearm_all (EV_P) 2243fd_rearm_all (EV_P)
1563{ 2244{
1564 int fd; 2245 int fd;
1565 2246
1566 for (fd = 0; fd < anfdmax; ++fd) 2247 for (fd = 0; fd < anfdmax; ++fd)
… …
1747 2428
1748/*****************************************************************************/ 2429/*****************************************************************************/
1749 2430
1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2431#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1751 2432
1752static void noinline ecb_cold 2433noinline ecb_cold
2434static void
1753evpipe_init (EV_P) 2435evpipe_init (EV_P)
1754{ 2436{
1755 if (!ev_is_active (&pipe_w)) 2437 if (!ev_is_active (&pipe_w))
1756 { 2438 {
2439 int fds [2];
2440
1757# if EV_USE_EVENTFD 2441# if EV_USE_EVENTFD
2442 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2443 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2444 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2445 fds [1] = eventfd (0, 0);
1761 2446
1762 if (evfd >= 0) 2447 if (fds [1] < 0)
2448# endif
1763 { 2449 {
2450 while (pipe (fds))
2451 ev_syserr ("(libev) error creating signal/async pipe");
2452
2453 fd_intern (fds [0]);
2454 }
2455
1764 evpipe [0] = -1; 2456 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2457
1766 ev_io_set (&pipe_w, evfd, EV_READ); 2458 if (evpipe [1] < 0)
2459 evpipe [1] = fds [1]; /* first call, set write fd */
2460 else
2461 {
2462 /* on subsequent calls, do not change evpipe [1] */
2463 /* so that evpipe_write can always rely on its value. */
2464 /* this branch does not do anything sensible on windows, */
2465 /* so must not be executed on windows */
2466
2467 dup2 (fds [1], evpipe [1]);
2468 close (fds [1]);
2469 }
2470
2471 fd_intern (evpipe [1]);
2472
2473 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2474 ev_io_start (EV_A_ &pipe_w);
2475 ev_unref (EV_A); /* watcher should not keep loop alive */
2476 }
2477}
2478
2479inline_speed void
2480evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2481{
2482 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2483
2484 if (expect_true (*flag))
2485 return;
2486
2487 *flag = 1;
2488 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2489
2490 pipe_write_skipped = 1;
2491
2492 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2493
2494 if (pipe_write_wanted)
2495 {
2496 int old_errno;
2497
2498 pipe_write_skipped = 0;
2499 ECB_MEMORY_FENCE_RELEASE;
2500
2501 old_errno = errno; /* save errno because write will clobber it */
2502
2503#if EV_USE_EVENTFD
2504 if (evpipe [0] < 0)
2505 {
2506 uint64_t counter = 1;
2507 write (evpipe [1], &counter, sizeof (uint64_t));
1767 } 2508 }
1768 else 2509 else
1769# endif 2510#endif
1770 { 2511 {
1771 while (pipe (evpipe)) 2512#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2513 WSABUF buf;
1773 2514 DWORD sent;
1774 fd_intern (evpipe [0]); 2515 buf.buf = (char *)&buf;
1775 fd_intern (evpipe [1]); 2516 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2517 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2518#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2519 write (evpipe [1], &(evpipe [1]), 1);
2520#endif
1821 } 2521 }
1822 2522
1823 errno = old_errno; 2523 errno = old_errno;
1824 } 2524 }
1825} 2525}
… …
1832 int i; 2532 int i;
1833 2533
1834 if (revents & EV_READ) 2534 if (revents & EV_READ)
1835 { 2535 {
1836#if EV_USE_EVENTFD 2536#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2537 if (evpipe [0] < 0)
1838 { 2538 {
1839 uint64_t counter; 2539 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2540 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2541 }
1842 else 2542 else
1843#endif 2543#endif
1844 { 2544 {
1845 char dummy; 2545 char dummy[4];
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2546#ifdef _WIN32
2547 WSABUF buf;
2548 DWORD recvd;
2549 DWORD flags = 0;
2550 buf.buf = dummy;
2551 buf.len = sizeof (dummy);
2552 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2553#else
1847 read (evpipe [0], &dummy, 1); 2554 read (evpipe [0], &dummy, sizeof (dummy));
2555#endif
1848 } 2556 }
1849 } 2557 }
1850 2558
1851 pipe_write_skipped = 0; 2559 pipe_write_skipped = 0;
2560
2561 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2562
1853#if EV_SIGNAL_ENABLE 2563#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2564 if (sig_pending)
1855 { 2565 {
1856 sig_pending = 0; 2566 sig_pending = 0;
2567
2568 ECB_MEMORY_FENCE;
1857 2569
1858 for (i = EV_NSIG - 1; i--; ) 2570 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2571 if (expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2572 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2573 }
… …
1863 2575
1864#if EV_ASYNC_ENABLE 2576#if EV_ASYNC_ENABLE
1865 if (async_pending) 2577 if (async_pending)
1866 { 2578 {
1867 async_pending = 0; 2579 async_pending = 0;
2580
2581 ECB_MEMORY_FENCE;
1868 2582
1869 for (i = asynccnt; i--; ) 2583 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2584 if (asyncs [i]->sent)
1871 { 2585 {
1872 asyncs [i]->sent = 0; 2586 asyncs [i]->sent = 0;
2587 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2588 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2589 }
1875 } 2590 }
1876#endif 2591#endif
1877} 2592}
1878 2593
1879/*****************************************************************************/ 2594/*****************************************************************************/
1880 2595
1881void 2596void
1882ev_feed_signal (int signum) 2597ev_feed_signal (int signum) EV_NOEXCEPT
1883{ 2598{
1884#if EV_MULTIPLICITY 2599#if EV_MULTIPLICITY
2600 EV_P;
2601 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2602 EV_A = signals [signum - 1].loop;
1886 2603
1887 if (!EV_A) 2604 if (!EV_A)
1888 return; 2605 return;
1889#endif 2606#endif
1890 2607
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2608 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2609 evpipe_write (EV_A_ &sig_pending);
1896} 2610}
1897 2611
1898static void 2612static void
… …
1903#endif 2617#endif
1904 2618
1905 ev_feed_signal (signum); 2619 ev_feed_signal (signum);
1906} 2620}
1907 2621
1908void noinline 2622noinline
2623void
1909ev_feed_signal_event (EV_P_ int signum) 2624ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1910{ 2625{
1911 WL w; 2626 WL w;
1912 2627
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2628 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2629 return;
1915 2630
1916 --signum; 2631 --signum;
1917 2632
1918#if EV_MULTIPLICITY 2633#if EV_MULTIPLICITY
… …
1922 if (expect_false (signals [signum].loop != EV_A)) 2637 if (expect_false (signals [signum].loop != EV_A))
1923 return; 2638 return;
1924#endif 2639#endif
1925 2640
1926 signals [signum].pending = 0; 2641 signals [signum].pending = 0;
2642 ECB_MEMORY_FENCE_RELEASE;
1927 2643
1928 for (w = signals [signum].head; w; w = w->next) 2644 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2645 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2646}
1931 2647
… …
2022# include "ev_kqueue.c" 2738# include "ev_kqueue.c"
2023#endif 2739#endif
2024#if EV_USE_EPOLL 2740#if EV_USE_EPOLL
2025# include "ev_epoll.c" 2741# include "ev_epoll.c"
2026#endif 2742#endif
2743#if EV_USE_LINUXAIO
2744# include "ev_linuxaio.c"
2745#endif
2027#if EV_USE_POLL 2746#if EV_USE_POLL
2028# include "ev_poll.c" 2747# include "ev_poll.c"
2029#endif 2748#endif
2030#if EV_USE_SELECT 2749#if EV_USE_SELECT
2031# include "ev_select.c" 2750# include "ev_select.c"
2032#endif 2751#endif
2033 2752
2034int ecb_cold 2753ecb_cold int
2035ev_version_major (void) 2754ev_version_major (void) EV_NOEXCEPT
2036{ 2755{
2037 return EV_VERSION_MAJOR; 2756 return EV_VERSION_MAJOR;
2038} 2757}
2039 2758
2040int ecb_cold 2759ecb_cold int
2041ev_version_minor (void) 2760ev_version_minor (void) EV_NOEXCEPT
2042{ 2761{
2043 return EV_VERSION_MINOR; 2762 return EV_VERSION_MINOR;
2044} 2763}
2045 2764
2046/* return true if we are running with elevated privileges and should ignore env variables */ 2765/* return true if we are running with elevated privileges and should ignore env variables */
2047int inline_size ecb_cold 2766inline_size ecb_cold int
2048enable_secure (void) 2767enable_secure (void)
2049{ 2768{
2050#ifdef _WIN32 2769#ifdef _WIN32
2051 return 0; 2770 return 0;
2052#else 2771#else
2053 return getuid () != geteuid () 2772 return getuid () != geteuid ()
2054 || getgid () != getegid (); 2773 || getgid () != getegid ();
2055#endif 2774#endif
2056} 2775}
2057 2776
2058unsigned int ecb_cold 2777ecb_cold
2778unsigned int
2059ev_supported_backends (void) 2779ev_supported_backends (void) EV_NOEXCEPT
2060{ 2780{
2061 unsigned int flags = 0; 2781 unsigned int flags = 0;
2062 2782
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2783 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2784 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2065 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2785 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2786 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2066 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2787 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2788 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2068 2789
2069 return flags; 2790 return flags;
2070} 2791}
2071 2792
2072unsigned int ecb_cold 2793ecb_cold
2794unsigned int
2073ev_recommended_backends (void) 2795ev_recommended_backends (void) EV_NOEXCEPT
2074{ 2796{
2075 unsigned int flags = ev_supported_backends (); 2797 unsigned int flags = ev_supported_backends ();
2076 2798
2077#ifndef __NetBSD__ 2799#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2800 /* kqueue is borked on everything but netbsd apparently */
… …
2086#endif 2808#endif
2087#ifdef __FreeBSD__ 2809#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2810 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif 2811#endif
2090 2812
2813 /* TODO: linuxaio is very experimental */
2814#if !EV_RECOMMEND_LINUXAIO
2815 flags &= ~EVBACKEND_LINUXAIO;
2816#endif
2817
2091 return flags; 2818 return flags;
2092} 2819}
2093 2820
2094unsigned int ecb_cold 2821ecb_cold
2822unsigned int
2095ev_embeddable_backends (void) 2823ev_embeddable_backends (void) EV_NOEXCEPT
2096{ 2824{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2825 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2826
2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2827 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2828 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2102 2830
2103 return flags; 2831 return flags;
2104} 2832}
2105 2833
2106unsigned int 2834unsigned int
2107ev_backend (EV_P) 2835ev_backend (EV_P) EV_NOEXCEPT
2108{ 2836{
2109 return backend; 2837 return backend;
2110} 2838}
2111 2839
2112#if EV_FEATURE_API 2840#if EV_FEATURE_API
2113unsigned int 2841unsigned int
2114ev_iteration (EV_P) 2842ev_iteration (EV_P) EV_NOEXCEPT
2115{ 2843{
2116 return loop_count; 2844 return loop_count;
2117} 2845}
2118 2846
2119unsigned int 2847unsigned int
2120ev_depth (EV_P) 2848ev_depth (EV_P) EV_NOEXCEPT
2121{ 2849{
2122 return loop_depth; 2850 return loop_depth;
2123} 2851}
2124 2852
2125void 2853void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2854ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2127{ 2855{
2128 io_blocktime = interval; 2856 io_blocktime = interval;
2129} 2857}
2130 2858
2131void 2859void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2860ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2133{ 2861{
2134 timeout_blocktime = interval; 2862 timeout_blocktime = interval;
2135} 2863}
2136 2864
2137void 2865void
2138ev_set_userdata (EV_P_ void *data) 2866ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2139{ 2867{
2140 userdata = data; 2868 userdata = data;
2141} 2869}
2142 2870
2143void * 2871void *
2144ev_userdata (EV_P) 2872ev_userdata (EV_P) EV_NOEXCEPT
2145{ 2873{
2146 return userdata; 2874 return userdata;
2147} 2875}
2148 2876
2149void 2877void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2878ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2151{ 2879{
2152 invoke_cb = invoke_pending_cb; 2880 invoke_cb = invoke_pending_cb;
2153} 2881}
2154 2882
2155void 2883void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2884ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2157{ 2885{
2158 release_cb = release; 2886 release_cb = release;
2159 acquire_cb = acquire; 2887 acquire_cb = acquire;
2160} 2888}
2161#endif 2889#endif
2162 2890
2163/* initialise a loop structure, must be zero-initialised */ 2891/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 2892noinline ecb_cold
2893static void
2165loop_init (EV_P_ unsigned int flags) 2894loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2166{ 2895{
2167 if (!backend) 2896 if (!backend)
2168 { 2897 {
2169 origflags = flags; 2898 origflags = flags;
2170 2899
… …
2215#if EV_ASYNC_ENABLE 2944#if EV_ASYNC_ENABLE
2216 async_pending = 0; 2945 async_pending = 0;
2217#endif 2946#endif
2218 pipe_write_skipped = 0; 2947 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 2948 pipe_write_wanted = 0;
2949 evpipe [0] = -1;
2950 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 2951#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2952 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 2953#endif
2223#if EV_USE_SIGNALFD 2954#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2955 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2226 2957
2227 if (!(flags & EVBACKEND_MASK)) 2958 if (!(flags & EVBACKEND_MASK))
2228 flags |= ev_recommended_backends (); 2959 flags |= ev_recommended_backends ();
2229 2960
2230#if EV_USE_IOCP 2961#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2962 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif 2963#endif
2233#if EV_USE_PORT 2964#if EV_USE_PORT
2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2965 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2235#endif 2966#endif
2236#if EV_USE_KQUEUE 2967#if EV_USE_KQUEUE
2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2968 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2969#endif
2970#if EV_USE_LINUXAIO
2971 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2238#endif 2972#endif
2239#if EV_USE_EPOLL 2973#if EV_USE_EPOLL
2240 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2974 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2241#endif 2975#endif
2242#if EV_USE_POLL 2976#if EV_USE_POLL
2243 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2977 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2244#endif 2978#endif
2245#if EV_USE_SELECT 2979#if EV_USE_SELECT
2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2980 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2247#endif 2981#endif
2248 2982
2249 ev_prepare_init (&pending_w, pendingcb); 2983 ev_prepare_init (&pending_w, pendingcb);
2250 2984
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2985#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2254#endif 2988#endif
2255 } 2989 }
2256} 2990}
2257 2991
2258/* free up a loop structure */ 2992/* free up a loop structure */
2259void ecb_cold 2993ecb_cold
2994void
2260ev_loop_destroy (EV_P) 2995ev_loop_destroy (EV_P)
2261{ 2996{
2262 int i; 2997 int i;
2263 2998
2264#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
… …
2275 EV_INVOKE_PENDING; 3010 EV_INVOKE_PENDING;
2276 } 3011 }
2277#endif 3012#endif
2278 3013
2279#if EV_CHILD_ENABLE 3014#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 3015 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 3016 {
2282 ev_ref (EV_A); /* child watcher */ 3017 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 3018 ev_signal_stop (EV_A_ &childev);
2284 } 3019 }
2285#endif 3020#endif
… …
2287 if (ev_is_active (&pipe_w)) 3022 if (ev_is_active (&pipe_w))
2288 { 3023 {
2289 /*ev_ref (EV_A);*/ 3024 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 3025 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 3026
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 3027 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 3028 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 3029 }
2303 3030
2304#if EV_USE_SIGNALFD 3031#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 3032 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 3033 close (sigfd);
… …
2313 3040
2314 if (backend_fd >= 0) 3041 if (backend_fd >= 0)
2315 close (backend_fd); 3042 close (backend_fd);
2316 3043
2317#if EV_USE_IOCP 3044#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3045 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif 3046#endif
2320#if EV_USE_PORT 3047#if EV_USE_PORT
2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3048 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2322#endif 3049#endif
2323#if EV_USE_KQUEUE 3050#if EV_USE_KQUEUE
2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3051 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3052#endif
3053#if EV_USE_LINUXAIO
3054 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2325#endif 3055#endif
2326#if EV_USE_EPOLL 3056#if EV_USE_EPOLL
2327 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3057 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2328#endif 3058#endif
2329#if EV_USE_POLL 3059#if EV_USE_POLL
2330 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3060 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2331#endif 3061#endif
2332#if EV_USE_SELECT 3062#if EV_USE_SELECT
2333 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3063 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2334#endif 3064#endif
2335 3065
2336 for (i = NUMPRI; i--; ) 3066 for (i = NUMPRI; i--; )
2337 { 3067 {
2338 array_free (pending, [i]); 3068 array_free (pending, [i]);
… …
2380 3110
2381inline_size void 3111inline_size void
2382loop_fork (EV_P) 3112loop_fork (EV_P)
2383{ 3113{
2384#if EV_USE_PORT 3114#if EV_USE_PORT
2385 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3115 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2386#endif 3116#endif
2387#if EV_USE_KQUEUE 3117#if EV_USE_KQUEUE
2388 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3118 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3119#endif
3120#if EV_USE_LINUXAIO
3121 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2389#endif 3122#endif
2390#if EV_USE_EPOLL 3123#if EV_USE_EPOLL
2391 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3124 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2392#endif 3125#endif
2393#if EV_USE_INOTIFY 3126#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 3127 infy_fork (EV_A);
2395#endif 3128#endif
2396 3129
3130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 3131 if (ev_is_active (&pipe_w) && postfork != 2)
2398 { 3132 {
2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3133 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2400 3134
2401 ev_ref (EV_A); 3135 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 3136 ev_io_stop (EV_A_ &pipe_w);
2403 3137
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 3138 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 3139 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 3140
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 3141 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 3142 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 3144 }
3145#endif
2421 3146
2422 postfork = 0; 3147 postfork = 0;
2423} 3148}
2424 3149
2425#if EV_MULTIPLICITY 3150#if EV_MULTIPLICITY
2426 3151
3152ecb_cold
2427struct ev_loop * ecb_cold 3153struct ev_loop *
2428ev_loop_new (unsigned int flags) 3154ev_loop_new (unsigned int flags) EV_NOEXCEPT
2429{ 3155{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3156 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 3157
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 3158 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 3159 loop_init (EV_A_ flags);
… …
2440} 3166}
2441 3167
2442#endif /* multiplicity */ 3168#endif /* multiplicity */
2443 3169
2444#if EV_VERIFY 3170#if EV_VERIFY
2445static void noinline ecb_cold 3171noinline ecb_cold
3172static void
2446verify_watcher (EV_P_ W w) 3173verify_watcher (EV_P_ W w)
2447{ 3174{
2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3175 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2449 3176
2450 if (w->pending) 3177 if (w->pending)
2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3178 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2452} 3179}
2453 3180
2454static void noinline ecb_cold 3181noinline ecb_cold
3182static void
2455verify_heap (EV_P_ ANHE *heap, int N) 3183verify_heap (EV_P_ ANHE *heap, int N)
2456{ 3184{
2457 int i; 3185 int i;
2458 3186
2459 for (i = HEAP0; i < N + HEAP0; ++i) 3187 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2464 3192
2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3193 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2466 } 3194 }
2467} 3195}
2468 3196
2469static void noinline ecb_cold 3197noinline ecb_cold
3198static void
2470array_verify (EV_P_ W *ws, int cnt) 3199array_verify (EV_P_ W *ws, int cnt)
2471{ 3200{
2472 while (cnt--) 3201 while (cnt--)
2473 { 3202 {
2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3203 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2477} 3206}
2478#endif 3207#endif
2479 3208
2480#if EV_FEATURE_API 3209#if EV_FEATURE_API
2481void ecb_cold 3210void ecb_cold
2482ev_verify (EV_P) 3211ev_verify (EV_P) EV_NOEXCEPT
2483{ 3212{
2484#if EV_VERIFY 3213#if EV_VERIFY
2485 int i; 3214 int i;
2486 WL w; 3215 WL w, w2;
2487 3216
2488 assert (activecnt >= -1); 3217 assert (activecnt >= -1);
2489 3218
2490 assert (fdchangemax >= fdchangecnt); 3219 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 3220 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3221 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 3222
2494 assert (anfdmax >= 0); 3223 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 3224 for (i = 0; i < anfdmax; ++i)
3225 {
3226 int j = 0;
3227
2496 for (w = anfds [i].head; w; w = w->next) 3228 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 3229 {
2498 verify_watcher (EV_A_ (W)w); 3230 verify_watcher (EV_A_ (W)w);
3231
3232 if (j++ & 1)
3233 {
3234 assert (("libev: io watcher list contains a loop", w != w2));
3235 w2 = w2->next;
3236 }
3237
2499 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3238 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2500 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3239 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2501 } 3240 }
3241 }
2502 3242
2503 assert (timermax >= timercnt); 3243 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 3244 verify_heap (EV_A_ timers, timercnt);
2505 3245
2506#if EV_PERIODIC_ENABLE 3246#if EV_PERIODIC_ENABLE
… …
2552#endif 3292#endif
2553} 3293}
2554#endif 3294#endif
2555 3295
2556#if EV_MULTIPLICITY 3296#if EV_MULTIPLICITY
3297ecb_cold
2557struct ev_loop * ecb_cold 3298struct ev_loop *
2558#else 3299#else
2559int 3300int
2560#endif 3301#endif
2561ev_default_loop (unsigned int flags) 3302ev_default_loop (unsigned int flags) EV_NOEXCEPT
2562{ 3303{
2563 if (!ev_default_loop_ptr) 3304 if (!ev_default_loop_ptr)
2564 { 3305 {
2565#if EV_MULTIPLICITY 3306#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 3307 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 3326
2586 return ev_default_loop_ptr; 3327 return ev_default_loop_ptr;
2587} 3328}
2588 3329
2589void 3330void
2590ev_loop_fork (EV_P) 3331ev_loop_fork (EV_P) EV_NOEXCEPT
2591{ 3332{
2592 postfork = 1; /* must be in line with ev_default_fork */ 3333 postfork = 1;
2593} 3334}
2594 3335
2595/*****************************************************************************/ 3336/*****************************************************************************/
2596 3337
2597void 3338void
… …
2599{ 3340{
2600 EV_CB_INVOKE ((W)w, revents); 3341 EV_CB_INVOKE ((W)w, revents);
2601} 3342}
2602 3343
2603unsigned int 3344unsigned int
2604ev_pending_count (EV_P) 3345ev_pending_count (EV_P) EV_NOEXCEPT
2605{ 3346{
2606 int pri; 3347 int pri;
2607 unsigned int count = 0; 3348 unsigned int count = 0;
2608 3349
2609 for (pri = NUMPRI; pri--; ) 3350 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri]; 3351 count += pendingcnt [pri];
2611 3352
2612 return count; 3353 return count;
2613} 3354}
2614 3355
2615void noinline 3356noinline
3357void
2616ev_invoke_pending (EV_P) 3358ev_invoke_pending (EV_P)
2617{ 3359{
2618 int pri; 3360 pendingpri = NUMPRI;
2619 3361
2620 for (pri = NUMPRI; pri--; ) 3362 do
3363 {
3364 --pendingpri;
3365
3366 /* pendingpri possibly gets modified in the inner loop */
2621 while (pendingcnt [pri]) 3367 while (pendingcnt [pendingpri])
2622 { 3368 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3369 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3370
2625 p->w->pending = 0; 3371 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3372 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3373 EV_FREQUENT_CHECK;
2628 } 3374 }
3375 }
3376 while (pendingpri);
2629} 3377}
2630 3378
2631#if EV_IDLE_ENABLE 3379#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3380/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3381/* only when higher priorities are idle" logic */
… …
2691 } 3439 }
2692} 3440}
2693 3441
2694#if EV_PERIODIC_ENABLE 3442#if EV_PERIODIC_ENABLE
2695 3443
2696static void noinline 3444noinline
3445static void
2697periodic_recalc (EV_P_ ev_periodic *w) 3446periodic_recalc (EV_P_ ev_periodic *w)
2698{ 3447{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3448 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3449 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701 3450
… …
2723{ 3472{
2724 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2725 3474
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3475 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3476 {
2728 int feed_count = 0;
2729
2730 do 3477 do
2731 { 3478 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3479 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3480
2734 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3481 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2761 } 3508 }
2762} 3509}
2763 3510
2764/* simply recalculate all periodics */ 3511/* simply recalculate all periodics */
2765/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3512/* TODO: maybe ensure that at least one event happens when jumping forward? */
2766static void noinline ecb_cold 3513noinline ecb_cold
3514static void
2767periodics_reschedule (EV_P) 3515periodics_reschedule (EV_P)
2768{ 3516{
2769 int i; 3517 int i;
2770 3518
2771 /* adjust periodics after time jump */ 3519 /* adjust periodics after time jump */
… …
2784 reheap (periodics, periodiccnt); 3532 reheap (periodics, periodiccnt);
2785} 3533}
2786#endif 3534#endif
2787 3535
2788/* adjust all timers by a given offset */ 3536/* adjust all timers by a given offset */
2789static void noinline ecb_cold 3537noinline ecb_cold
3538static void
2790timers_reschedule (EV_P_ ev_tstamp adjust) 3539timers_reschedule (EV_P_ ev_tstamp adjust)
2791{ 3540{
2792 int i; 3541 int i;
2793 3542
2794 for (i = 0; i < timercnt; ++i) 3543 for (i = 0; i < timercnt; ++i)
… …
2868 3617
2869 mn_now = ev_rt_now; 3618 mn_now = ev_rt_now;
2870 } 3619 }
2871} 3620}
2872 3621
2873void 3622int
2874ev_run (EV_P_ int flags) 3623ev_run (EV_P_ int flags)
2875{ 3624{
2876#if EV_FEATURE_API 3625#if EV_FEATURE_API
2877 ++loop_depth; 3626 ++loop_depth;
2878#endif 3627#endif
… …
2991#endif 3740#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3741 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3742 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3743 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3744
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3745 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3746
3747 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3748 if (pipe_write_skipped)
2999 { 3749 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3750 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3751 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3752 }
… …
3035 loop_done = EVBREAK_CANCEL; 3785 loop_done = EVBREAK_CANCEL;
3036 3786
3037#if EV_FEATURE_API 3787#if EV_FEATURE_API
3038 --loop_depth; 3788 --loop_depth;
3039#endif 3789#endif
3040}
3041 3790
3791 return activecnt;
3792}
3793
3042void 3794void
3043ev_break (EV_P_ int how) 3795ev_break (EV_P_ int how) EV_NOEXCEPT
3044{ 3796{
3045 loop_done = how; 3797 loop_done = how;
3046} 3798}
3047 3799
3048void 3800void
3049ev_ref (EV_P) 3801ev_ref (EV_P) EV_NOEXCEPT
3050{ 3802{
3051 ++activecnt; 3803 ++activecnt;
3052} 3804}
3053 3805
3054void 3806void
3055ev_unref (EV_P) 3807ev_unref (EV_P) EV_NOEXCEPT
3056{ 3808{
3057 --activecnt; 3809 --activecnt;
3058} 3810}
3059 3811
3060void 3812void
3061ev_now_update (EV_P) 3813ev_now_update (EV_P) EV_NOEXCEPT
3062{ 3814{
3063 time_update (EV_A_ 1e100); 3815 time_update (EV_A_ 1e100);
3064} 3816}
3065 3817
3066void 3818void
3067ev_suspend (EV_P) 3819ev_suspend (EV_P) EV_NOEXCEPT
3068{ 3820{
3069 ev_now_update (EV_A); 3821 ev_now_update (EV_A);
3070} 3822}
3071 3823
3072void 3824void
3073ev_resume (EV_P) 3825ev_resume (EV_P) EV_NOEXCEPT
3074{ 3826{
3075 ev_tstamp mn_prev = mn_now; 3827 ev_tstamp mn_prev = mn_now;
3076 3828
3077 ev_now_update (EV_A); 3829 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3830 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3117 w->pending = 0; 3869 w->pending = 0;
3118 } 3870 }
3119} 3871}
3120 3872
3121int 3873int
3122ev_clear_pending (EV_P_ void *w) 3874ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3123{ 3875{
3124 W w_ = (W)w; 3876 W w_ = (W)w;
3125 int pending = w_->pending; 3877 int pending = w_->pending;
3126 3878
3127 if (expect_true (pending)) 3879 if (expect_true (pending))
… …
3159 w->active = 0; 3911 w->active = 0;
3160} 3912}
3161 3913
3162/*****************************************************************************/ 3914/*****************************************************************************/
3163 3915
3164void noinline 3916noinline
3917void
3165ev_io_start (EV_P_ ev_io *w) 3918ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3166{ 3919{
3167 int fd = w->fd; 3920 int fd = w->fd;
3168 3921
3169 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
3170 return; 3923 return;
… …
3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3926 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3174 3927
3175 EV_FREQUENT_CHECK; 3928 EV_FREQUENT_CHECK;
3176 3929
3177 ev_start (EV_A_ (W)w, 1); 3930 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3931 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3179 wlist_add (&anfds[fd].head, (WL)w); 3932 wlist_add (&anfds[fd].head, (WL)w);
3933
3934 /* common bug, apparently */
3935 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3180 3936
3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3937 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3182 w->events &= ~EV__IOFDSET; 3938 w->events &= ~EV__IOFDSET;
3183 3939
3184 EV_FREQUENT_CHECK; 3940 EV_FREQUENT_CHECK;
3185} 3941}
3186 3942
3187void noinline 3943noinline
3944void
3188ev_io_stop (EV_P_ ev_io *w) 3945ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3189{ 3946{
3190 clear_pending (EV_A_ (W)w); 3947 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3948 if (expect_false (!ev_is_active (w)))
3192 return; 3949 return;
3193 3950
… …
3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3958 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3202 3959
3203 EV_FREQUENT_CHECK; 3960 EV_FREQUENT_CHECK;
3204} 3961}
3205 3962
3206void noinline 3963noinline
3964void
3207ev_timer_start (EV_P_ ev_timer *w) 3965ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3208{ 3966{
3209 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
3210 return; 3968 return;
3211 3969
3212 ev_at (w) += mn_now; 3970 ev_at (w) += mn_now;
… …
3215 3973
3216 EV_FREQUENT_CHECK; 3974 EV_FREQUENT_CHECK;
3217 3975
3218 ++timercnt; 3976 ++timercnt;
3219 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3977 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3220 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3978 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3221 ANHE_w (timers [ev_active (w)]) = (WT)w; 3979 ANHE_w (timers [ev_active (w)]) = (WT)w;
3222 ANHE_at_cache (timers [ev_active (w)]); 3980 ANHE_at_cache (timers [ev_active (w)]);
3223 upheap (timers, ev_active (w)); 3981 upheap (timers, ev_active (w));
3224 3982
3225 EV_FREQUENT_CHECK; 3983 EV_FREQUENT_CHECK;
3226 3984
3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3985 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3228} 3986}
3229 3987
3230void noinline 3988noinline
3989void
3231ev_timer_stop (EV_P_ ev_timer *w) 3990ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3232{ 3991{
3233 clear_pending (EV_A_ (W)w); 3992 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 3993 if (expect_false (!ev_is_active (w)))
3235 return; 3994 return;
3236 3995
… …
3255 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
3256 4015
3257 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
3258} 4017}
3259 4018
3260void noinline 4019noinline
4020void
3261ev_timer_again (EV_P_ ev_timer *w) 4021ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4022{
3263 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
4024
4025 clear_pending (EV_A_ (W)w);
3264 4026
3265 if (ev_is_active (w)) 4027 if (ev_is_active (w))
3266 { 4028 {
3267 if (w->repeat) 4029 if (w->repeat)
3268 { 4030 {
… …
3281 4043
3282 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3283} 4045}
3284 4046
3285ev_tstamp 4047ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 4048ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3287{ 4049{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4050 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 4051}
3290 4052
3291#if EV_PERIODIC_ENABLE 4053#if EV_PERIODIC_ENABLE
3292void noinline 4054noinline
4055void
3293ev_periodic_start (EV_P_ ev_periodic *w) 4056ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3294{ 4057{
3295 if (expect_false (ev_is_active (w))) 4058 if (expect_false (ev_is_active (w)))
3296 return; 4059 return;
3297 4060
3298 if (w->reschedule_cb) 4061 if (w->reschedule_cb)
… …
3307 4070
3308 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
3309 4072
3310 ++periodiccnt; 4073 ++periodiccnt;
3311 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4074 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3312 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4075 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3313 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4076 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3314 ANHE_at_cache (periodics [ev_active (w)]); 4077 ANHE_at_cache (periodics [ev_active (w)]);
3315 upheap (periodics, ev_active (w)); 4078 upheap (periodics, ev_active (w));
3316 4079
3317 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
3318 4081
3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4082 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3320} 4083}
3321 4084
3322void noinline 4085noinline
4086void
3323ev_periodic_stop (EV_P_ ev_periodic *w) 4087ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3324{ 4088{
3325 clear_pending (EV_A_ (W)w); 4089 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
3327 return; 4091 return;
3328 4092
… …
3345 ev_stop (EV_A_ (W)w); 4109 ev_stop (EV_A_ (W)w);
3346 4110
3347 EV_FREQUENT_CHECK; 4111 EV_FREQUENT_CHECK;
3348} 4112}
3349 4113
3350void noinline 4114noinline
4115void
3351ev_periodic_again (EV_P_ ev_periodic *w) 4116ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3352{ 4117{
3353 /* TODO: use adjustheap and recalculation */ 4118 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 4119 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 4120 ev_periodic_start (EV_A_ w);
3356} 4121}
… …
3360# define SA_RESTART 0 4125# define SA_RESTART 0
3361#endif 4126#endif
3362 4127
3363#if EV_SIGNAL_ENABLE 4128#if EV_SIGNAL_ENABLE
3364 4129
3365void noinline 4130noinline
4131void
3366ev_signal_start (EV_P_ ev_signal *w) 4132ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3367{ 4133{
3368 if (expect_false (ev_is_active (w))) 4134 if (expect_false (ev_is_active (w)))
3369 return; 4135 return;
3370 4136
3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4137 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3373#if EV_MULTIPLICITY 4139#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops", 4140 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4141 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 4142
3377 signals [w->signum - 1].loop = EV_A; 4143 signals [w->signum - 1].loop = EV_A;
4144 ECB_MEMORY_FENCE_RELEASE;
3378#endif 4145#endif
3379 4146
3380 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3381 4148
3382#if EV_USE_SIGNALFD 4149#if EV_USE_SIGNALFD
… …
3441 } 4208 }
3442 4209
3443 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
3444} 4211}
3445 4212
3446void noinline 4213noinline
4214void
3447ev_signal_stop (EV_P_ ev_signal *w) 4215ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3448{ 4216{
3449 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3451 return; 4219 return;
3452 4220
… …
3483#endif 4251#endif
3484 4252
3485#if EV_CHILD_ENABLE 4253#if EV_CHILD_ENABLE
3486 4254
3487void 4255void
3488ev_child_start (EV_P_ ev_child *w) 4256ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3489{ 4257{
3490#if EV_MULTIPLICITY 4258#if EV_MULTIPLICITY
3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4259 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3492#endif 4260#endif
3493 if (expect_false (ev_is_active (w))) 4261 if (expect_false (ev_is_active (w)))
… …
3500 4268
3501 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3502} 4270}
3503 4271
3504void 4272void
3505ev_child_stop (EV_P_ ev_child *w) 4273ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3506{ 4274{
3507 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
3509 return; 4277 return;
3510 4278
… …
3527 4295
3528#define DEF_STAT_INTERVAL 5.0074891 4296#define DEF_STAT_INTERVAL 5.0074891
3529#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4297#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3530#define MIN_STAT_INTERVAL 0.1074891 4298#define MIN_STAT_INTERVAL 0.1074891
3531 4299
3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4300noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3533 4301
3534#if EV_USE_INOTIFY 4302#if EV_USE_INOTIFY
3535 4303
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4304/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4305# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 4306
3539static void noinline 4307noinline
4308static void
3540infy_add (EV_P_ ev_stat *w) 4309infy_add (EV_P_ ev_stat *w)
3541{ 4310{
3542 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); 4311 w->wd = inotify_add_watch (fs_fd, w->path,
4312 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4313 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4314 | IN_DONT_FOLLOW | IN_MASK_ADD);
3543 4315
3544 if (w->wd >= 0) 4316 if (w->wd >= 0)
3545 { 4317 {
3546 struct statfs sfs; 4318 struct statfs sfs;
3547 4319
… …
3551 4323
3552 if (!fs_2625) 4324 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4325 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 4326 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 4327 && (sfs.f_type == 0x1373 /* devfs */
4328 || sfs.f_type == 0x4006 /* fat */
4329 || sfs.f_type == 0x4d44 /* msdos */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */ 4330 || sfs.f_type == 0xEF53 /* ext2/3 */
4331 || sfs.f_type == 0x72b6 /* jffs2 */
4332 || sfs.f_type == 0x858458f6 /* ramfs */
4333 || sfs.f_type == 0x5346544e /* ntfs */
3557 || sfs.f_type == 0x3153464a /* jfs */ 4334 || sfs.f_type == 0x3153464a /* jfs */
4335 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 4336 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 4337 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 4338 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4339 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 4340 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4341 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3564 } 4342 }
… …
3599 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4377 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3600 ev_timer_again (EV_A_ &w->timer); 4378 ev_timer_again (EV_A_ &w->timer);
3601 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4379 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3602} 4380}
3603 4381
3604static void noinline 4382noinline
4383static void
3605infy_del (EV_P_ ev_stat *w) 4384infy_del (EV_P_ ev_stat *w)
3606{ 4385{
3607 int slot; 4386 int slot;
3608 int wd = w->wd; 4387 int wd = w->wd;
3609 4388
… …
3616 4395
3617 /* remove this watcher, if others are watching it, they will rearm */ 4396 /* remove this watcher, if others are watching it, they will rearm */
3618 inotify_rm_watch (fs_fd, wd); 4397 inotify_rm_watch (fs_fd, wd);
3619} 4398}
3620 4399
3621static void noinline 4400noinline
4401static void
3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4402infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3623{ 4403{
3624 if (slot < 0) 4404 if (slot < 0)
3625 /* overflow, need to check for all hash slots */ 4405 /* overflow, need to check for all hash slots */
3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4406 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3662 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4442 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len; 4443 ofs += sizeof (struct inotify_event) + ev->len;
3664 } 4444 }
3665} 4445}
3666 4446
3667inline_size void ecb_cold 4447inline_size ecb_cold
4448void
3668ev_check_2625 (EV_P) 4449ev_check_2625 (EV_P)
3669{ 4450{
3670 /* kernels < 2.6.25 are borked 4451 /* kernels < 2.6.25 are borked
3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4452 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3672 */ 4453 */
… …
3677} 4458}
3678 4459
3679inline_size int 4460inline_size int
3680infy_newfd (void) 4461infy_newfd (void)
3681{ 4462{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4463#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4464 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4465 if (fd >= 0)
3685 return fd; 4466 return fd;
3686#endif 4467#endif
3687 return inotify_init (); 4468 return inotify_init ();
… …
3762#else 4543#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4544# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4545#endif
3765 4546
3766void 4547void
3767ev_stat_stat (EV_P_ ev_stat *w) 4548ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3768{ 4549{
3769 if (lstat (w->path, &w->attr) < 0) 4550 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4551 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4552 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4553 w->attr.st_nlink = 1;
3773} 4554}
3774 4555
3775static void noinline 4556noinline
4557static void
3776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4558stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3777{ 4559{
3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4560 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3779 4561
3780 ev_statdata prev = w->attr; 4562 ev_statdata prev = w->attr;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4593 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4594 }
3813} 4595}
3814 4596
3815void 4597void
3816ev_stat_start (EV_P_ ev_stat *w) 4598ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3817{ 4599{
3818 if (expect_false (ev_is_active (w))) 4600 if (expect_false (ev_is_active (w)))
3819 return; 4601 return;
3820 4602
3821 ev_stat_stat (EV_A_ w); 4603 ev_stat_stat (EV_A_ w);
… …
3842 4624
3843 EV_FREQUENT_CHECK; 4625 EV_FREQUENT_CHECK;
3844} 4626}
3845 4627
3846void 4628void
3847ev_stat_stop (EV_P_ ev_stat *w) 4629ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3848{ 4630{
3849 clear_pending (EV_A_ (W)w); 4631 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4632 if (expect_false (!ev_is_active (w)))
3851 return; 4633 return;
3852 4634
… …
3868} 4650}
3869#endif 4651#endif
3870 4652
3871#if EV_IDLE_ENABLE 4653#if EV_IDLE_ENABLE
3872void 4654void
3873ev_idle_start (EV_P_ ev_idle *w) 4655ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3874{ 4656{
3875 if (expect_false (ev_is_active (w))) 4657 if (expect_false (ev_is_active (w)))
3876 return; 4658 return;
3877 4659
3878 pri_adjust (EV_A_ (W)w); 4660 pri_adjust (EV_A_ (W)w);
… …
3883 int active = ++idlecnt [ABSPRI (w)]; 4665 int active = ++idlecnt [ABSPRI (w)];
3884 4666
3885 ++idleall; 4667 ++idleall;
3886 ev_start (EV_A_ (W)w, active); 4668 ev_start (EV_A_ (W)w, active);
3887 4669
3888 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4670 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3889 idles [ABSPRI (w)][active - 1] = w; 4671 idles [ABSPRI (w)][active - 1] = w;
3890 } 4672 }
3891 4673
3892 EV_FREQUENT_CHECK; 4674 EV_FREQUENT_CHECK;
3893} 4675}
3894 4676
3895void 4677void
3896ev_idle_stop (EV_P_ ev_idle *w) 4678ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3897{ 4679{
3898 clear_pending (EV_A_ (W)w); 4680 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4681 if (expect_false (!ev_is_active (w)))
3900 return; 4682 return;
3901 4683
… …
3915} 4697}
3916#endif 4698#endif
3917 4699
3918#if EV_PREPARE_ENABLE 4700#if EV_PREPARE_ENABLE
3919void 4701void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4702ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3921{ 4703{
3922 if (expect_false (ev_is_active (w))) 4704 if (expect_false (ev_is_active (w)))
3923 return; 4705 return;
3924 4706
3925 EV_FREQUENT_CHECK; 4707 EV_FREQUENT_CHECK;
3926 4708
3927 ev_start (EV_A_ (W)w, ++preparecnt); 4709 ev_start (EV_A_ (W)w, ++preparecnt);
3928 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4710 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3929 prepares [preparecnt - 1] = w; 4711 prepares [preparecnt - 1] = w;
3930 4712
3931 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3932} 4714}
3933 4715
3934void 4716void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4717ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3936{ 4718{
3937 clear_pending (EV_A_ (W)w); 4719 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4720 if (expect_false (!ev_is_active (w)))
3939 return; 4721 return;
3940 4722
… …
3953} 4735}
3954#endif 4736#endif
3955 4737
3956#if EV_CHECK_ENABLE 4738#if EV_CHECK_ENABLE
3957void 4739void
3958ev_check_start (EV_P_ ev_check *w) 4740ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3959{ 4741{
3960 if (expect_false (ev_is_active (w))) 4742 if (expect_false (ev_is_active (w)))
3961 return; 4743 return;
3962 4744
3963 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3964 4746
3965 ev_start (EV_A_ (W)w, ++checkcnt); 4747 ev_start (EV_A_ (W)w, ++checkcnt);
3966 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4748 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3967 checks [checkcnt - 1] = w; 4749 checks [checkcnt - 1] = w;
3968 4750
3969 EV_FREQUENT_CHECK; 4751 EV_FREQUENT_CHECK;
3970} 4752}
3971 4753
3972void 4754void
3973ev_check_stop (EV_P_ ev_check *w) 4755ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3974{ 4756{
3975 clear_pending (EV_A_ (W)w); 4757 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4758 if (expect_false (!ev_is_active (w)))
3977 return; 4759 return;
3978 4760
… …
3990 EV_FREQUENT_CHECK; 4772 EV_FREQUENT_CHECK;
3991} 4773}
3992#endif 4774#endif
3993 4775
3994#if EV_EMBED_ENABLE 4776#if EV_EMBED_ENABLE
3995void noinline 4777noinline
4778void
3996ev_embed_sweep (EV_P_ ev_embed *w) 4779ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3997{ 4780{
3998 ev_run (w->other, EVRUN_NOWAIT); 4781 ev_run (w->other, EVRUN_NOWAIT);
3999} 4782}
4000 4783
4001static void 4784static void
… …
4049 ev_idle_stop (EV_A_ idle); 4832 ev_idle_stop (EV_A_ idle);
4050} 4833}
4051#endif 4834#endif
4052 4835
4053void 4836void
4054ev_embed_start (EV_P_ ev_embed *w) 4837ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4055{ 4838{
4056 if (expect_false (ev_is_active (w))) 4839 if (expect_false (ev_is_active (w)))
4057 return; 4840 return;
4058 4841
4059 { 4842 {
… …
4080 4863
4081 EV_FREQUENT_CHECK; 4864 EV_FREQUENT_CHECK;
4082} 4865}
4083 4866
4084void 4867void
4085ev_embed_stop (EV_P_ ev_embed *w) 4868ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4086{ 4869{
4087 clear_pending (EV_A_ (W)w); 4870 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4871 if (expect_false (!ev_is_active (w)))
4089 return; 4872 return;
4090 4873
… …
4100} 4883}
4101#endif 4884#endif
4102 4885
4103#if EV_FORK_ENABLE 4886#if EV_FORK_ENABLE
4104void 4887void
4105ev_fork_start (EV_P_ ev_fork *w) 4888ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4106{ 4889{
4107 if (expect_false (ev_is_active (w))) 4890 if (expect_false (ev_is_active (w)))
4108 return; 4891 return;
4109 4892
4110 EV_FREQUENT_CHECK; 4893 EV_FREQUENT_CHECK;
4111 4894
4112 ev_start (EV_A_ (W)w, ++forkcnt); 4895 ev_start (EV_A_ (W)w, ++forkcnt);
4113 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4896 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4114 forks [forkcnt - 1] = w; 4897 forks [forkcnt - 1] = w;
4115 4898
4116 EV_FREQUENT_CHECK; 4899 EV_FREQUENT_CHECK;
4117} 4900}
4118 4901
4119void 4902void
4120ev_fork_stop (EV_P_ ev_fork *w) 4903ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4121{ 4904{
4122 clear_pending (EV_A_ (W)w); 4905 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 4906 if (expect_false (!ev_is_active (w)))
4124 return; 4907 return;
4125 4908
… …
4138} 4921}
4139#endif 4922#endif
4140 4923
4141#if EV_CLEANUP_ENABLE 4924#if EV_CLEANUP_ENABLE
4142void 4925void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 4926ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4144{ 4927{
4145 if (expect_false (ev_is_active (w))) 4928 if (expect_false (ev_is_active (w)))
4146 return; 4929 return;
4147 4930
4148 EV_FREQUENT_CHECK; 4931 EV_FREQUENT_CHECK;
4149 4932
4150 ev_start (EV_A_ (W)w, ++cleanupcnt); 4933 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4934 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4152 cleanups [cleanupcnt - 1] = w; 4935 cleanups [cleanupcnt - 1] = w;
4153 4936
4154 /* cleanup watchers should never keep a refcount on the loop */ 4937 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A); 4938 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 4939 EV_FREQUENT_CHECK;
4157} 4940}
4158 4941
4159void 4942void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 4943ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4161{ 4944{
4162 clear_pending (EV_A_ (W)w); 4945 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4946 if (expect_false (!ev_is_active (w)))
4164 return; 4947 return;
4165 4948
… …
4179} 4962}
4180#endif 4963#endif
4181 4964
4182#if EV_ASYNC_ENABLE 4965#if EV_ASYNC_ENABLE
4183void 4966void
4184ev_async_start (EV_P_ ev_async *w) 4967ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4185{ 4968{
4186 if (expect_false (ev_is_active (w))) 4969 if (expect_false (ev_is_active (w)))
4187 return; 4970 return;
4188 4971
4189 w->sent = 0; 4972 w->sent = 0;
… …
4191 evpipe_init (EV_A); 4974 evpipe_init (EV_A);
4192 4975
4193 EV_FREQUENT_CHECK; 4976 EV_FREQUENT_CHECK;
4194 4977
4195 ev_start (EV_A_ (W)w, ++asynccnt); 4978 ev_start (EV_A_ (W)w, ++asynccnt);
4196 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4979 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4197 asyncs [asynccnt - 1] = w; 4980 asyncs [asynccnt - 1] = w;
4198 4981
4199 EV_FREQUENT_CHECK; 4982 EV_FREQUENT_CHECK;
4200} 4983}
4201 4984
4202void 4985void
4203ev_async_stop (EV_P_ ev_async *w) 4986ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4204{ 4987{
4205 clear_pending (EV_A_ (W)w); 4988 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4989 if (expect_false (!ev_is_active (w)))
4207 return; 4990 return;
4208 4991
… …
4219 5002
4220 EV_FREQUENT_CHECK; 5003 EV_FREQUENT_CHECK;
4221} 5004}
4222 5005
4223void 5006void
4224ev_async_send (EV_P_ ev_async *w) 5007ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4225{ 5008{
4226 w->sent = 1; 5009 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 5010 evpipe_write (EV_A_ &async_pending);
4228} 5011}
4229#endif 5012#endif
… …
4266 5049
4267 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5050 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4268} 5051}
4269 5052
4270void 5053void
4271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5054ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4272{ 5055{
4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5056 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4274
4275 if (expect_false (!once))
4276 {
4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4278 return;
4279 }
4280 5057
4281 once->cb = cb; 5058 once->cb = cb;
4282 once->arg = arg; 5059 once->arg = arg;
4283 5060
4284 ev_init (&once->io, once_cb_io); 5061 ev_init (&once->io, once_cb_io);
… …
4297} 5074}
4298 5075
4299/*****************************************************************************/ 5076/*****************************************************************************/
4300 5077
4301#if EV_WALK_ENABLE 5078#if EV_WALK_ENABLE
4302void ecb_cold 5079ecb_cold
5080void
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5081ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4304{ 5082{
4305 int i, j; 5083 int i, j;
4306 ev_watcher_list *wl, *wn; 5084 ev_watcher_list *wl, *wn;
4307 5085
4308 if (types & (EV_IO | EV_EMBED)) 5086 if (types & (EV_IO | EV_EMBED))

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