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Comparing libev/ev.c (file contents):
Revision 1.395 by root, Wed Aug 24 16:08:17 2011 UTC vs.
Revision 1.492 by root, Sat Jun 22 16:25:53 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
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
188EV_CPP(extern "C" {) 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
189 217
190#ifndef _WIN32 218#ifndef _WIN32
191# include <sys/time.h> 219# include <sys/time.h>
192# include <sys/wait.h> 220# include <sys/wait.h>
193# include <unistd.h> 221# include <unistd.h>
194#else 222#else
195# include <io.h> 223# include <io.h>
196# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
197# include <windows.h> 226# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
200# endif 229# endif
201# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
202#endif 231#endif
203 232
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
211
212/* 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 */
213 234
214/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 236#if defined EV_NSIG
216/* use what's provided */ 237/* use what's provided */
217#elif defined (NSIG) 238#elif defined NSIG
218# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 240#elif defined _NSIG
220# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 242#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 244#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 248#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 250#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 254#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 256#else
236# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 258#endif
241 259
242#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
244#endif 262#endif
245 263
246#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 267# else
250# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
251# endif 269# endif
252#endif 270#endif
253 271
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
254#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 284# else
258# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
259# endif 286# endif
260#endif 287#endif
… …
297 324
298#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
299# define EV_USE_PORT 0 326# define EV_USE_PORT 0
300#endif 327#endif
301 328
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
302#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
304# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
305# else 340# else
306# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
347 382
348#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 385#endif
351 386
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
403#if EV_USE_LINUXAIO
404# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
405#endif
406
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 407/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 408/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 409#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 410# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 411# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 412# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 413# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 414# define EV_USE_MONOTONIC 1
360# else 415# else
… …
363# endif 418# endif
364#endif 419#endif
365 420
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 421/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 422
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 423#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 424# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 425# define EV_USE_MONOTONIC 0
377#endif 426#endif
378 427
… …
386# define EV_USE_INOTIFY 0 435# define EV_USE_INOTIFY 0
387#endif 436#endif
388 437
389#if !EV_USE_NANOSLEEP 438#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 439/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 440# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 441# include <sys/select.h>
442# endif
443#endif
444
445#if EV_USE_LINUXAIO
446# include <sys/syscall.h>
447# if !SYS_io_getevents
448# undef EV_USE_LINUXAIO
449# define EV_USE_LINUXAIO 0
393# endif 450# endif
394#endif 451#endif
395 452
396#if EV_USE_INOTIFY 453#if EV_USE_INOTIFY
397# include <sys/statfs.h> 454# include <sys/statfs.h>
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 456/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 457# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 458# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 459# define EV_USE_INOTIFY 0
403# endif 460# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 461#endif
409 462
410#if EV_USE_EVENTFD 463#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 464/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 465# include <stdint.h>
… …
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 522/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */ 523/* ECB.H BEGIN */
471/* 524/*
472 * libecb - http://software.schmorp.de/pkg/libecb 525 * libecb - http://software.schmorp.de/pkg/libecb
473 * 526 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 527 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta 528 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved. 529 * All rights reserved.
477 * 530 *
478 * Redistribution and use in source and binary forms, with or without modifica- 531 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met: 532 * tion, are permitted provided that the following conditions are met:
… …
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 546 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 547 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 548 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 549 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE. 550 * OF THE POSSIBILITY OF SUCH DAMAGE.
551 *
552 * Alternatively, the contents of this file may be used under the terms of
553 * the GNU General Public License ("GPL") version 2 or any later version,
554 * in which case the provisions of the GPL are applicable instead of
555 * the above. If you wish to allow the use of your version of this file
556 * only under the terms of the GPL and not to allow others to use your
557 * version of this file under the BSD license, indicate your decision
558 * by deleting the provisions above and replace them with the notice
559 * and other provisions required by the GPL. If you do not delete the
560 * provisions above, a recipient may use your version of this file under
561 * either the BSD or the GPL.
498 */ 562 */
499 563
500#ifndef ECB_H 564#ifndef ECB_H
501#define ECB_H 565#define ECB_H
566
567/* 16 bits major, 16 bits minor */
568#define ECB_VERSION 0x00010005
502 569
503#ifdef _WIN32 570#ifdef _WIN32
504 typedef signed char int8_t; 571 typedef signed char int8_t;
505 typedef unsigned char uint8_t; 572 typedef unsigned char uint8_t;
506 typedef signed short int16_t; 573 typedef signed short int16_t;
… …
512 typedef unsigned long long uint64_t; 579 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */ 580 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t; 581 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t; 582 typedef unsigned __int64 uint64_t;
516 #endif 583 #endif
584 #ifdef _WIN64
585 #define ECB_PTRSIZE 8
586 typedef uint64_t uintptr_t;
587 typedef int64_t intptr_t;
588 #else
589 #define ECB_PTRSIZE 4
590 typedef uint32_t uintptr_t;
591 typedef int32_t intptr_t;
592 #endif
517#else 593#else
518 #include <inttypes.h> 594 #include <inttypes.h>
595 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
596 #define ECB_PTRSIZE 8
597 #else
598 #define ECB_PTRSIZE 4
599 #endif
600#endif
601
602#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
603#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
604
605/* work around x32 idiocy by defining proper macros */
606#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
607 #if _ILP32
608 #define ECB_AMD64_X32 1
609 #else
610 #define ECB_AMD64 1
611 #endif
519#endif 612#endif
520 613
521/* many compilers define _GNUC_ to some versions but then only implement 614/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions, 615 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers. 616 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so. 617 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have 618 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place. 619 * an issue with that they should have done it right in the first place.
527 */ 620 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 621#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
530 #define ECB_GCC_VERSION(major,minor) 0 622 #define ECB_GCC_VERSION(major,minor) 0
531 #else 623#else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 624 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
533 #endif 625#endif
626
627#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
628
629#if __clang__ && defined __has_builtin
630 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
631#else
632 #define ECB_CLANG_BUILTIN(x) 0
633#endif
634
635#if __clang__ && defined __has_extension
636 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
637#else
638 #define ECB_CLANG_EXTENSION(x) 0
639#endif
640
641#define ECB_CPP (__cplusplus+0)
642#define ECB_CPP11 (__cplusplus >= 201103L)
643#define ECB_CPP14 (__cplusplus >= 201402L)
644#define ECB_CPP17 (__cplusplus >= 201703L)
645
646#if ECB_CPP
647 #define ECB_C 0
648 #define ECB_STDC_VERSION 0
649#else
650 #define ECB_C 1
651 #define ECB_STDC_VERSION __STDC_VERSION__
652#endif
653
654#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
655#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
656#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
657
658#if ECB_CPP
659 #define ECB_EXTERN_C extern "C"
660 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
661 #define ECB_EXTERN_C_END }
662#else
663 #define ECB_EXTERN_C extern
664 #define ECB_EXTERN_C_BEG
665 #define ECB_EXTERN_C_END
534#endif 666#endif
535 667
536/*****************************************************************************/ 668/*****************************************************************************/
537 669
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 670/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 671/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540 672
541#if ECB_NO_THREADS || ECB_NO_SMP 673#if ECB_NO_THREADS
674 #define ECB_NO_SMP 1
675#endif
676
677#if ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0) 678 #define ECB_MEMORY_FENCE do { } while (0)
543#endif 679#endif
544 680
681/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
682#if __xlC__ && ECB_CPP
683 #include <builtins.h>
684#endif
685
686#if 1400 <= _MSC_VER
687 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
688#endif
689
545#ifndef ECB_MEMORY_FENCE 690#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) 691 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
547 #if __i386__ 692 #if __i386 || __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 693 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 694 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 695 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
551 #elif __amd64 696 #elif ECB_GCC_AMD64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 698 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 699 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 700 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 701 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
702 #elif defined __ARM_ARCH_2__ \
703 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
704 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
705 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
706 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
707 || defined __ARM_ARCH_5TEJ__
708 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 709 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 710 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
711 || defined __ARM_ARCH_6T2__
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 713 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 714 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 715 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
716 #elif __aarch64__
717 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
718 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
719 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
720 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
721 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
722 #elif defined __s390__ || defined __s390x__
723 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
724 #elif defined __mips__
725 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
726 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
727 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
728 #elif defined __alpha__
729 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
730 #elif defined __hppa__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
732 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
733 #elif defined __ia64__
734 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
735 #elif defined __m68k__
736 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
737 #elif defined __m88k__
738 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
739 #elif defined __sh__
740 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
563 #endif 741 #endif
564 #endif 742 #endif
565#endif 743#endif
566 744
567#ifndef ECB_MEMORY_FENCE 745#ifndef ECB_MEMORY_FENCE
746 #if ECB_GCC_VERSION(4,7)
747 /* see comment below (stdatomic.h) about the C11 memory model. */
748 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
749 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
750 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
751
752 #elif ECB_CLANG_EXTENSION(c_atomic)
753 /* see comment below (stdatomic.h) about the C11 memory model. */
754 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
755 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
756 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
757
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) 758 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
569 #define ECB_MEMORY_FENCE __sync_synchronize () 759 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 760 #elif _MSC_VER >= 1500 /* VC++ 2008 */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 761 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
762 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
763 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
764 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
765 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 766 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 767 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 768 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 769 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 770 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32) 771 #elif defined _WIN32
578 #include <WinNT.h> 772 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 773 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
774 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
775 #include <mbarrier.h>
776 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
777 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
778 #define ECB_MEMORY_FENCE_RELEASE __machine_w_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 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
790 /* any fence other than seq_cst, which isn't very efficient for us. */
791 /* Why that is, we don't know - either the C11 memory model is quite useless */
792 /* for most usages, or gcc and clang have a bug */
793 /* I *currently* lean towards the latter, and inefficiently implement */
794 /* all three of ecb's fences as a seq_cst fence */
795 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
796 /* for all __atomic_thread_fence's except seq_cst */
797 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
580 #endif 798 #endif
581#endif 799#endif
582 800
583#ifndef ECB_MEMORY_FENCE 801#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS 802 #if !ECB_AVOID_PTHREADS
… …
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 814 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 815 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif 816 #endif
599#endif 817#endif
600 818
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 819#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 820 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif 821#endif
604 822
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 823#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 824 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif 825#endif
608 826
609/*****************************************************************************/ 827/*****************************************************************************/
610 828
611#define ECB_C99 (__STDC_VERSION__ >= 199901L) 829#if ECB_CPP
612
613#if __cplusplus
614 #define ecb_inline static inline 830 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5) 831#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__ 832 #define ecb_inline static __inline__
617#elif ECB_C99 833#elif ECB_C99
618 #define ecb_inline static inline 834 #define ecb_inline static inline
… …
632 848
633#define ECB_CONCAT_(a, b) a ## b 849#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 850#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a 851#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 852#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
853#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
637 854
638#define ecb_function_ ecb_inline 855#define ecb_function_ ecb_inline
639 856
640#if ECB_GCC_VERSION(3,1) 857#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
641 #define ecb_attribute(attrlist) __attribute__(attrlist) 858 #define ecb_attribute(attrlist) __attribute__ (attrlist)
859#else
860 #define ecb_attribute(attrlist)
861#endif
862
863#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr) 864 #define ecb_is_constant(expr) __builtin_constant_p (expr)
865#else
866 /* possible C11 impl for integral types
867 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
868 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
869
870 #define ecb_is_constant(expr) 0
871#endif
872
873#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 874 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
875#else
876 #define ecb_expect(expr,value) (expr)
877#endif
878
879#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 880 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else 881#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality) 882 #define ecb_prefetch(addr,rw,locality)
650#endif 883#endif
651 884
652/* no emulation for ecb_decltype */ 885/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5) 886#if ECB_CPP11
887 // older implementations might have problems with decltype(x)::type, work around it
888 template<class T> struct ecb_decltype_t { typedef T type; };
654 #define ecb_decltype(x) __decltype(x) 889 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
655#elif ECB_GCC_VERSION(3,0) 890#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
656 #define ecb_decltype(x) __typeof(x) 891 #define ecb_decltype(x) __typeof__ (x)
657#endif 892#endif
658 893
894#if _MSC_VER >= 1300
895 #define ecb_deprecated __declspec (deprecated)
896#else
897 #define ecb_deprecated ecb_attribute ((__deprecated__))
898#endif
899
900#if _MSC_VER >= 1500
901 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
902#elif ECB_GCC_VERSION(4,5)
903 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
904#else
905 #define ecb_deprecated_message(msg) ecb_deprecated
906#endif
907
908#if _MSC_VER >= 1400
909 #define ecb_noinline __declspec (noinline)
910#else
659#define ecb_noinline ecb_attribute ((__noinline__)) 911 #define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__)) 912#endif
913
661#define ecb_unused ecb_attribute ((__unused__)) 914#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__)) 915#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__)) 916#define ecb_pure ecb_attribute ((__pure__))
917
918#if ECB_C11 || __IBMC_NORETURN
919 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
920 #define ecb_noreturn _Noreturn
921#elif ECB_CPP11
922 #define ecb_noreturn [[noreturn]]
923#elif _MSC_VER >= 1200
924 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
925 #define ecb_noreturn __declspec (noreturn)
926#else
927 #define ecb_noreturn ecb_attribute ((__noreturn__))
928#endif
664 929
665#if ECB_GCC_VERSION(4,3) 930#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__)) 931 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__)) 932 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__)) 933 #define ecb_cold ecb_attribute ((__cold__))
… …
680/* for compatibility to the rest of the world */ 945/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr) 946#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr) 947#define ecb_unlikely(expr) ecb_expect_false (expr)
683 948
684/* count trailing zero bits and count # of one bits */ 949/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4) 950#if ECB_GCC_VERSION(3,4) \
951 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
952 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
953 && ECB_CLANG_BUILTIN(__builtin_popcount))
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 954 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 955 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 956 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x) 957 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x) 958 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x) 959 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */ 960 /* no popcountll */
693#else 961#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 962 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
695 ecb_function_ int 963 ecb_function_ ecb_const int
696 ecb_ctz32 (uint32_t x) 964 ecb_ctz32 (uint32_t x)
697 { 965 {
966#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
967 unsigned long r;
968 _BitScanForward (&r, x);
969 return (int)r;
970#else
698 int r = 0; 971 int r = 0;
699 972
700 x &= ~x + 1; /* this isolates the lowest bit */ 973 x &= ~x + 1; /* this isolates the lowest bit */
701 974
702#if ECB_branchless_on_i386 975#if ECB_branchless_on_i386
… …
712 if (x & 0xff00ff00) r += 8; 985 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16; 986 if (x & 0xffff0000) r += 16;
714#endif 987#endif
715 988
716 return r; 989 return r;
990#endif
717 } 991 }
718 992
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 993 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
720 ecb_function_ int 994 ecb_function_ ecb_const int
721 ecb_ctz64 (uint64_t x) 995 ecb_ctz64 (uint64_t x)
722 { 996 {
997#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
998 unsigned long r;
999 _BitScanForward64 (&r, x);
1000 return (int)r;
1001#else
723 int shift = x & 0xffffffffU ? 0 : 32; 1002 int shift = x & 0xffffffff ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift; 1003 return ecb_ctz32 (x >> shift) + shift;
1004#endif
725 } 1005 }
726 1006
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1007 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
728 ecb_function_ int 1008 ecb_function_ ecb_const int
729 ecb_popcount32 (uint32_t x) 1009 ecb_popcount32 (uint32_t x)
730 { 1010 {
731 x -= (x >> 1) & 0x55555555; 1011 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1012 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f; 1013 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101; 1014 x *= 0x01010101;
735 1015
736 return x >> 24; 1016 return x >> 24;
737 } 1017 }
738 1018
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1019 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
740 ecb_function_ int ecb_ld32 (uint32_t x) 1020 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
741 { 1021 {
1022#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1023 unsigned long r;
1024 _BitScanReverse (&r, x);
1025 return (int)r;
1026#else
742 int r = 0; 1027 int r = 0;
743 1028
744 if (x >> 16) { x >>= 16; r += 16; } 1029 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; } 1030 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; } 1031 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; } 1032 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; } 1033 if (x >> 1) { r += 1; }
749 1034
750 return r; 1035 return r;
1036#endif
751 } 1037 }
752 1038
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1039 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
754 ecb_function_ int ecb_ld64 (uint64_t x) 1040 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
755 { 1041 {
1042#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1043 unsigned long r;
1044 _BitScanReverse64 (&r, x);
1045 return (int)r;
1046#else
756 int r = 0; 1047 int r = 0;
757 1048
758 if (x >> 32) { x >>= 32; r += 32; } 1049 if (x >> 32) { x >>= 32; r += 32; }
759 1050
760 return r + ecb_ld32 (x); 1051 return r + ecb_ld32 (x);
1052#endif
761 } 1053 }
762#endif 1054#endif
1055
1056ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1058ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1059ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1060
1061ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1062ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1063{
1064 return ( (x * 0x0802U & 0x22110U)
1065 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1066}
1067
1068ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1069ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1070{
1071 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1072 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1073 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1074 x = ( x >> 8 ) | ( x << 8);
1075
1076 return x;
1077}
1078
1079ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1080ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1081{
1082 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1083 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1084 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1085 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1086 x = ( x >> 16 ) | ( x << 16);
1087
1088 return x;
1089}
763 1090
764/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1091/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */ 1092/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1093ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
767ecb_function_ int 1094ecb_function_ ecb_const int
768ecb_popcount64 (uint64_t x) 1095ecb_popcount64 (uint64_t x)
769{ 1096{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1097 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771} 1098}
772 1099
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1106ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1107ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
781 1108
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1109ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1110ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1111ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1112ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1113ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1114ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1115ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1116ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790 1117
791#if ECB_GCC_VERSION(4,3) 1118#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1119 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1120 #define ecb_bswap16(x) __builtin_bswap16 (x)
1121 #else
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1122 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1123 #endif
793 #define ecb_bswap32(x) __builtin_bswap32 (x) 1124 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x) 1125 #define ecb_bswap64(x) __builtin_bswap64 (x)
1126#elif _MSC_VER
1127 #include <stdlib.h>
1128 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1129 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1130 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
795#else 1131#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1132 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
797 ecb_function_ uint16_t 1133 ecb_function_ ecb_const uint16_t
798 ecb_bswap16 (uint16_t x) 1134 ecb_bswap16 (uint16_t x)
799 { 1135 {
800 return ecb_rotl16 (x, 8); 1136 return ecb_rotl16 (x, 8);
801 } 1137 }
802 1138
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1139 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
804 ecb_function_ uint32_t 1140 ecb_function_ ecb_const uint32_t
805 ecb_bswap32 (uint32_t x) 1141 ecb_bswap32 (uint32_t x)
806 { 1142 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1143 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 } 1144 }
809 1145
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1146 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
811 ecb_function_ uint64_t 1147 ecb_function_ ecb_const uint64_t
812 ecb_bswap64 (uint64_t x) 1148 ecb_bswap64 (uint64_t x)
813 { 1149 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1150 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 } 1151 }
816#endif 1152#endif
817 1153
818#if ECB_GCC_VERSION(4,5) 1154#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
819 #define ecb_unreachable() __builtin_unreachable () 1155 #define ecb_unreachable() __builtin_unreachable ()
820#else 1156#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1157 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1158 ecb_inline ecb_noreturn void ecb_unreachable (void);
823 ecb_function_ void ecb_unreachable (void) { } 1159 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
824#endif 1160#endif
825 1161
826/* try to tell the compiler that some condition is definitely true */ 1162/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1163#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
828 1164
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1165ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
830ecb_function_ unsigned char 1166ecb_inline ecb_const uint32_t
831ecb_byteorder_helper (void) 1167ecb_byteorder_helper (void)
832{ 1168{
833 const uint32_t u = 0x11223344; 1169 /* the union code still generates code under pressure in gcc, */
834 return *(unsigned char *)&u; 1170 /* but less than using pointers, and always seems to */
1171 /* successfully return a constant. */
1172 /* the reason why we have this horrible preprocessor mess */
1173 /* is to avoid it in all cases, at least on common architectures */
1174 /* or when using a recent enough gcc version (>= 4.6) */
1175#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1176 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1177 #define ECB_LITTLE_ENDIAN 1
1178 return 0x44332211;
1179#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1180 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1181 #define ECB_BIG_ENDIAN 1
1182 return 0x11223344;
1183#else
1184 union
1185 {
1186 uint8_t c[4];
1187 uint32_t u;
1188 } u = { 0x11, 0x22, 0x33, 0x44 };
1189 return u.u;
1190#endif
835} 1191}
836 1192
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_big_endian (void);
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1194ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1195ecb_inline ecb_const ecb_bool ecb_little_endian (void);
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1196ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
841 1197
842#if ECB_GCC_VERSION(3,0) || ECB_C99 1198#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1199 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else 1200#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1201 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1202#endif
1203
1204#if ECB_CPP
1205 template<typename T>
1206 static inline T ecb_div_rd (T val, T div)
1207 {
1208 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1209 }
1210 template<typename T>
1211 static inline T ecb_div_ru (T val, T div)
1212 {
1213 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1214 }
1215#else
1216 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1217 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
846#endif 1218#endif
847 1219
848#if ecb_cplusplus_does_not_suck 1220#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ 1221 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N> 1222 template<typename T, int N>
… …
854 } 1226 }
855#else 1227#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1228 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif 1229#endif
858 1230
1231ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1232ecb_function_ ecb_const uint32_t
1233ecb_binary16_to_binary32 (uint32_t x)
1234{
1235 unsigned int s = (x & 0x8000) << (31 - 15);
1236 int e = (x >> 10) & 0x001f;
1237 unsigned int m = x & 0x03ff;
1238
1239 if (ecb_expect_false (e == 31))
1240 /* infinity or NaN */
1241 e = 255 - (127 - 15);
1242 else if (ecb_expect_false (!e))
1243 {
1244 if (ecb_expect_true (!m))
1245 /* zero, handled by code below by forcing e to 0 */
1246 e = 0 - (127 - 15);
1247 else
1248 {
1249 /* subnormal, renormalise */
1250 unsigned int s = 10 - ecb_ld32 (m);
1251
1252 m = (m << s) & 0x3ff; /* mask implicit bit */
1253 e -= s - 1;
1254 }
1255 }
1256
1257 /* e and m now are normalised, or zero, (or inf or nan) */
1258 e += 127 - 15;
1259
1260 return s | (e << 23) | (m << (23 - 10));
1261}
1262
1263ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1264ecb_function_ ecb_const uint16_t
1265ecb_binary32_to_binary16 (uint32_t x)
1266{
1267 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1268 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1269 unsigned int m = x & 0x007fffff;
1270
1271 x &= 0x7fffffff;
1272
1273 /* if it's within range of binary16 normals, use fast path */
1274 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1275 {
1276 /* mantissa round-to-even */
1277 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1278
1279 /* handle overflow */
1280 if (ecb_expect_false (m >= 0x00800000))
1281 {
1282 m >>= 1;
1283 e += 1;
1284 }
1285
1286 return s | (e << 10) | (m >> (23 - 10));
1287 }
1288
1289 /* handle large numbers and infinity */
1290 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1291 return s | 0x7c00;
1292
1293 /* handle zero, subnormals and small numbers */
1294 if (ecb_expect_true (x < 0x38800000))
1295 {
1296 /* zero */
1297 if (ecb_expect_true (!x))
1298 return s;
1299
1300 /* handle subnormals */
1301
1302 /* too small, will be zero */
1303 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1304 return s;
1305
1306 m |= 0x00800000; /* make implicit bit explicit */
1307
1308 /* very tricky - we need to round to the nearest e (+10) bit value */
1309 {
1310 unsigned int bits = 14 - e;
1311 unsigned int half = (1 << (bits - 1)) - 1;
1312 unsigned int even = (m >> bits) & 1;
1313
1314 /* if this overflows, we will end up with a normalised number */
1315 m = (m + half + even) >> bits;
1316 }
1317
1318 return s | m;
1319 }
1320
1321 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1322 m >>= 13;
1323
1324 return s | 0x7c00 | m | !m;
1325}
1326
1327/*******************************************************************************/
1328/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1329
1330/* basically, everything uses "ieee pure-endian" floating point numbers */
1331/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1332#if 0 \
1333 || __i386 || __i386__ \
1334 || ECB_GCC_AMD64 \
1335 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1336 || defined __s390__ || defined __s390x__ \
1337 || defined __mips__ \
1338 || defined __alpha__ \
1339 || defined __hppa__ \
1340 || defined __ia64__ \
1341 || defined __m68k__ \
1342 || defined __m88k__ \
1343 || defined __sh__ \
1344 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1345 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1346 || defined __aarch64__
1347 #define ECB_STDFP 1
1348 #include <string.h> /* for memcpy */
1349#else
1350 #define ECB_STDFP 0
1351#endif
1352
1353#ifndef ECB_NO_LIBM
1354
1355 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1356
1357 /* only the oldest of old doesn't have this one. solaris. */
1358 #ifdef INFINITY
1359 #define ECB_INFINITY INFINITY
1360 #else
1361 #define ECB_INFINITY HUGE_VAL
1362 #endif
1363
1364 #ifdef NAN
1365 #define ECB_NAN NAN
1366 #else
1367 #define ECB_NAN ECB_INFINITY
1368 #endif
1369
1370 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1371 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1372 #define ecb_frexpf(x,e) frexpf ((x), (e))
1373 #else
1374 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1375 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1376 #endif
1377
1378 /* convert a float to ieee single/binary32 */
1379 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1380 ecb_function_ ecb_const uint32_t
1381 ecb_float_to_binary32 (float x)
1382 {
1383 uint32_t r;
1384
1385 #if ECB_STDFP
1386 memcpy (&r, &x, 4);
1387 #else
1388 /* slow emulation, works for anything but -0 */
1389 uint32_t m;
1390 int e;
1391
1392 if (x == 0e0f ) return 0x00000000U;
1393 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1394 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1395 if (x != x ) return 0x7fbfffffU;
1396
1397 m = ecb_frexpf (x, &e) * 0x1000000U;
1398
1399 r = m & 0x80000000U;
1400
1401 if (r)
1402 m = -m;
1403
1404 if (e <= -126)
1405 {
1406 m &= 0xffffffU;
1407 m >>= (-125 - e);
1408 e = -126;
1409 }
1410
1411 r |= (e + 126) << 23;
1412 r |= m & 0x7fffffU;
1413 #endif
1414
1415 return r;
1416 }
1417
1418 /* converts an ieee single/binary32 to a float */
1419 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1420 ecb_function_ ecb_const float
1421 ecb_binary32_to_float (uint32_t x)
1422 {
1423 float r;
1424
1425 #if ECB_STDFP
1426 memcpy (&r, &x, 4);
1427 #else
1428 /* emulation, only works for normals and subnormals and +0 */
1429 int neg = x >> 31;
1430 int e = (x >> 23) & 0xffU;
1431
1432 x &= 0x7fffffU;
1433
1434 if (e)
1435 x |= 0x800000U;
1436 else
1437 e = 1;
1438
1439 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1440 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1441
1442 r = neg ? -r : r;
1443 #endif
1444
1445 return r;
1446 }
1447
1448 /* convert a double to ieee double/binary64 */
1449 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1450 ecb_function_ ecb_const uint64_t
1451 ecb_double_to_binary64 (double x)
1452 {
1453 uint64_t r;
1454
1455 #if ECB_STDFP
1456 memcpy (&r, &x, 8);
1457 #else
1458 /* slow emulation, works for anything but -0 */
1459 uint64_t m;
1460 int e;
1461
1462 if (x == 0e0 ) return 0x0000000000000000U;
1463 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1464 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1465 if (x != x ) return 0X7ff7ffffffffffffU;
1466
1467 m = frexp (x, &e) * 0x20000000000000U;
1468
1469 r = m & 0x8000000000000000;;
1470
1471 if (r)
1472 m = -m;
1473
1474 if (e <= -1022)
1475 {
1476 m &= 0x1fffffffffffffU;
1477 m >>= (-1021 - e);
1478 e = -1022;
1479 }
1480
1481 r |= ((uint64_t)(e + 1022)) << 52;
1482 r |= m & 0xfffffffffffffU;
1483 #endif
1484
1485 return r;
1486 }
1487
1488 /* converts an ieee double/binary64 to a double */
1489 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1490 ecb_function_ ecb_const double
1491 ecb_binary64_to_double (uint64_t x)
1492 {
1493 double r;
1494
1495 #if ECB_STDFP
1496 memcpy (&r, &x, 8);
1497 #else
1498 /* emulation, only works for normals and subnormals and +0 */
1499 int neg = x >> 63;
1500 int e = (x >> 52) & 0x7ffU;
1501
1502 x &= 0xfffffffffffffU;
1503
1504 if (e)
1505 x |= 0x10000000000000U;
1506 else
1507 e = 1;
1508
1509 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1510 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1511
1512 r = neg ? -r : r;
1513 #endif
1514
1515 return r;
1516 }
1517
1518 /* convert a float to ieee half/binary16 */
1519 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1520 ecb_function_ ecb_const uint16_t
1521 ecb_float_to_binary16 (float x)
1522 {
1523 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1524 }
1525
1526 /* convert an ieee half/binary16 to float */
1527 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1528 ecb_function_ ecb_const float
1529 ecb_binary16_to_float (uint16_t x)
1530 {
1531 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1532 }
1533
1534#endif
1535
859#endif 1536#endif
860 1537
861/* ECB.H END */ 1538/* ECB.H END */
862 1539
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1540#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1541/* if your architecture doesn't need memory fences, e.g. because it is
1542 * single-cpu/core, or if you use libev in a project that doesn't use libev
1543 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1544 * libev, in which cases the memory fences become nops.
1545 * alternatively, you can remove this #error and link against libpthread,
1546 * which will then provide the memory fences.
1547 */
1548# error "memory fences not defined for your architecture, please report"
1549#endif
1550
864# undef ECB_MEMORY_FENCE 1551#ifndef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE 1552# define ECB_MEMORY_FENCE do { } while (0)
866# undef ECB_MEMORY_FENCE_RELEASE 1553# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1554# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
867#endif 1555#endif
868 1556
869#define expect_false(cond) ecb_expect_false (cond) 1557#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond) 1558#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline 1559#define noinline ecb_noinline
… …
873#define inline_size ecb_inline 1561#define inline_size ecb_inline
874 1562
875#if EV_FEATURE_CODE 1563#if EV_FEATURE_CODE
876# define inline_speed ecb_inline 1564# define inline_speed ecb_inline
877#else 1565#else
878# define inline_speed static noinline 1566# define inline_speed noinline static
879#endif 1567#endif
880 1568
881#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1569#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
882 1570
883#if EV_MINPRI == EV_MAXPRI 1571#if EV_MINPRI == EV_MAXPRI
884# define ABSPRI(w) (((W)w), 0) 1572# define ABSPRI(w) (((W)w), 0)
885#else 1573#else
886# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1574# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
887#endif 1575#endif
888 1576
889#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1577#define EMPTY /* required for microsofts broken pseudo-c compiler */
890#define EMPTY2(a,b) /* used to suppress some warnings */
891 1578
892typedef ev_watcher *W; 1579typedef ev_watcher *W;
893typedef ev_watcher_list *WL; 1580typedef ev_watcher_list *WL;
894typedef ev_watcher_time *WT; 1581typedef ev_watcher_time *WT;
895 1582
… …
930#else 1617#else
931 1618
932#include <float.h> 1619#include <float.h>
933 1620
934/* a floor() replacement function, should be independent of ev_tstamp type */ 1621/* a floor() replacement function, should be independent of ev_tstamp type */
1622noinline
935static ev_tstamp noinline 1623static ev_tstamp
936ev_floor (ev_tstamp v) 1624ev_floor (ev_tstamp v)
937{ 1625{
938 /* the choice of shift factor is not terribly important */ 1626 /* the choice of shift factor is not terribly important */
939#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1627#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
940 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
972 1660
973#ifdef __linux 1661#ifdef __linux
974# include <sys/utsname.h> 1662# include <sys/utsname.h>
975#endif 1663#endif
976 1664
977static unsigned int noinline ecb_cold 1665noinline ecb_cold
1666static unsigned int
978ev_linux_version (void) 1667ev_linux_version (void)
979{ 1668{
980#ifdef __linux 1669#ifdef __linux
981 unsigned int v = 0; 1670 unsigned int v = 0;
982 struct utsname buf; 1671 struct utsname buf;
… …
1011} 1700}
1012 1701
1013/*****************************************************************************/ 1702/*****************************************************************************/
1014 1703
1015#if EV_AVOID_STDIO 1704#if EV_AVOID_STDIO
1016static void noinline ecb_cold 1705noinline ecb_cold
1706static void
1017ev_printerr (const char *msg) 1707ev_printerr (const char *msg)
1018{ 1708{
1019 write (STDERR_FILENO, msg, strlen (msg)); 1709 write (STDERR_FILENO, msg, strlen (msg));
1020} 1710}
1021#endif 1711#endif
1022 1712
1023static void (*syserr_cb)(const char *msg); 1713static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1024 1714
1025void ecb_cold 1715ecb_cold
1716void
1026ev_set_syserr_cb (void (*cb)(const char *msg)) 1717ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1027{ 1718{
1028 syserr_cb = cb; 1719 syserr_cb = cb;
1029} 1720}
1030 1721
1031static void noinline ecb_cold 1722noinline ecb_cold
1723static void
1032ev_syserr (const char *msg) 1724ev_syserr (const char *msg)
1033{ 1725{
1034 if (!msg) 1726 if (!msg)
1035 msg = "(libev) system error"; 1727 msg = "(libev) system error";
1036 1728
… …
1049 abort (); 1741 abort ();
1050 } 1742 }
1051} 1743}
1052 1744
1053static void * 1745static void *
1054ev_realloc_emul (void *ptr, long size) 1746ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1055{ 1747{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
1059 /* some systems, notably openbsd and darwin, fail to properly 1748 /* some systems, notably openbsd and darwin, fail to properly
1060 * implement realloc (x, 0) (as required by both ansi c-89 and 1749 * implement realloc (x, 0) (as required by both ansi c-89 and
1061 * the single unix specification, so work around them here. 1750 * the single unix specification, so work around them here.
1751 * recently, also (at least) fedora and debian started breaking it,
1752 * despite documenting it otherwise.
1062 */ 1753 */
1063 1754
1064 if (size) 1755 if (size)
1065 return realloc (ptr, size); 1756 return realloc (ptr, size);
1066 1757
1067 free (ptr); 1758 free (ptr);
1068 return 0; 1759 return 0;
1069#endif
1070} 1760}
1071 1761
1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1762static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1073 1763
1074void ecb_cold 1764ecb_cold
1765void
1075ev_set_allocator (void *(*cb)(void *ptr, long size)) 1766ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1076{ 1767{
1077 alloc = cb; 1768 alloc = cb;
1078} 1769}
1079 1770
1080inline_speed void * 1771inline_speed void *
… …
1107typedef struct 1798typedef struct
1108{ 1799{
1109 WL head; 1800 WL head;
1110 unsigned char events; /* the events watched for */ 1801 unsigned char events; /* the events watched for */
1111 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1802 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1112 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1803 unsigned char emask; /* some backends store the actual kernel mask in here */
1113 unsigned char unused; 1804 unsigned char unused;
1114#if EV_USE_EPOLL 1805#if EV_USE_EPOLL
1115 unsigned int egen; /* generation counter to counter epoll bugs */ 1806 unsigned int egen; /* generation counter to counter epoll bugs */
1116#endif 1807#endif
1117#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1808#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1168 #undef VAR 1859 #undef VAR
1169 }; 1860 };
1170 #include "ev_wrap.h" 1861 #include "ev_wrap.h"
1171 1862
1172 static struct ev_loop default_loop_struct; 1863 static struct ev_loop default_loop_struct;
1173 struct ev_loop *ev_default_loop_ptr; 1864 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1174 1865
1175#else 1866#else
1176 1867
1177 ev_tstamp ev_rt_now; 1868 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1178 #define VAR(name,decl) static decl; 1869 #define VAR(name,decl) static decl;
1179 #include "ev_vars.h" 1870 #include "ev_vars.h"
1180 #undef VAR 1871 #undef VAR
1181 1872
1182 static int ev_default_loop_ptr; 1873 static int ev_default_loop_ptr;
… …
1197 1888
1198/*****************************************************************************/ 1889/*****************************************************************************/
1199 1890
1200#ifndef EV_HAVE_EV_TIME 1891#ifndef EV_HAVE_EV_TIME
1201ev_tstamp 1892ev_tstamp
1202ev_time (void) 1893ev_time (void) EV_NOEXCEPT
1203{ 1894{
1204#if EV_USE_REALTIME 1895#if EV_USE_REALTIME
1205 if (expect_true (have_realtime)) 1896 if (expect_true (have_realtime))
1206 { 1897 {
1207 struct timespec ts; 1898 struct timespec ts;
… …
1231 return ev_time (); 1922 return ev_time ();
1232} 1923}
1233 1924
1234#if EV_MULTIPLICITY 1925#if EV_MULTIPLICITY
1235ev_tstamp 1926ev_tstamp
1236ev_now (EV_P) 1927ev_now (EV_P) EV_NOEXCEPT
1237{ 1928{
1238 return ev_rt_now; 1929 return ev_rt_now;
1239} 1930}
1240#endif 1931#endif
1241 1932
1242void 1933void
1243ev_sleep (ev_tstamp delay) 1934ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1244{ 1935{
1245 if (delay > 0.) 1936 if (delay > 0.)
1246 { 1937 {
1247#if EV_USE_NANOSLEEP 1938#if EV_USE_NANOSLEEP
1248 struct timespec ts; 1939 struct timespec ts;
1249 1940
1250 EV_TS_SET (ts, delay); 1941 EV_TS_SET (ts, delay);
1251 nanosleep (&ts, 0); 1942 nanosleep (&ts, 0);
1252#elif defined(_WIN32) 1943#elif defined _WIN32
1944 /* maybe this should round up, as ms is very low resolution */
1945 /* compared to select (µs) or nanosleep (ns) */
1253 Sleep ((unsigned long)(delay * 1e3)); 1946 Sleep ((unsigned long)(delay * 1e3));
1254#else 1947#else
1255 struct timeval tv; 1948 struct timeval tv;
1256 1949
1257 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1950 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1276 1969
1277 do 1970 do
1278 ncur <<= 1; 1971 ncur <<= 1;
1279 while (cnt > ncur); 1972 while (cnt > ncur);
1280 1973
1281 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1974 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
1282 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1975 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
1283 { 1976 {
1284 ncur *= elem; 1977 ncur *= elem;
1285 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1978 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
1286 ncur = ncur - sizeof (void *) * 4; 1979 ncur = ncur - sizeof (void *) * 4;
… …
1288 } 1981 }
1289 1982
1290 return ncur; 1983 return ncur;
1291} 1984}
1292 1985
1293static void * noinline ecb_cold 1986noinline ecb_cold
1987static void *
1294array_realloc (int elem, void *base, int *cur, int cnt) 1988array_realloc (int elem, void *base, int *cur, int cnt)
1295{ 1989{
1296 *cur = array_nextsize (elem, *cur, cnt); 1990 *cur = array_nextsize (elem, *cur, cnt);
1297 return ev_realloc (base, elem * *cur); 1991 return ev_realloc (base, elem * *cur);
1298} 1992}
1299 1993
1994#define array_needsize_noinit(base,count)
1995
1300#define array_init_zero(base,count) \ 1996#define array_needsize_zerofill(base,count) \
1301 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1997 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1302 1998
1303#define array_needsize(type,base,cur,cnt,init) \ 1999#define array_needsize(type,base,cur,cnt,init) \
1304 if (expect_false ((cnt) > (cur))) \ 2000 if (expect_false ((cnt) > (cur))) \
1305 { \ 2001 { \
1306 int ecb_unused ocur_ = (cur); \ 2002 ecb_unused int ocur_ = (cur); \
1307 (base) = (type *)array_realloc \ 2003 (base) = (type *)array_realloc \
1308 (sizeof (type), (base), &(cur), (cnt)); \ 2004 (sizeof (type), (base), &(cur), (cnt)); \
1309 init ((base) + (ocur_), (cur) - ocur_); \ 2005 init ((base) + (ocur_), (cur) - ocur_); \
1310 } 2006 }
1311 2007
… …
1323 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2019 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1324 2020
1325/*****************************************************************************/ 2021/*****************************************************************************/
1326 2022
1327/* dummy callback for pending events */ 2023/* dummy callback for pending events */
1328static void noinline 2024noinline
2025static void
1329pendingcb (EV_P_ ev_prepare *w, int revents) 2026pendingcb (EV_P_ ev_prepare *w, int revents)
1330{ 2027{
1331} 2028}
1332 2029
1333void noinline 2030noinline
2031void
1334ev_feed_event (EV_P_ void *w, int revents) 2032ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1335{ 2033{
1336 W w_ = (W)w; 2034 W w_ = (W)w;
1337 int pri = ABSPRI (w_); 2035 int pri = ABSPRI (w_);
1338 2036
1339 if (expect_false (w_->pending)) 2037 if (expect_false (w_->pending))
1340 pendings [pri][w_->pending - 1].events |= revents; 2038 pendings [pri][w_->pending - 1].events |= revents;
1341 else 2039 else
1342 { 2040 {
1343 w_->pending = ++pendingcnt [pri]; 2041 w_->pending = ++pendingcnt [pri];
1344 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1345 pendings [pri][w_->pending - 1].w = w_; 2043 pendings [pri][w_->pending - 1].w = w_;
1346 pendings [pri][w_->pending - 1].events = revents; 2044 pendings [pri][w_->pending - 1].events = revents;
1347 } 2045 }
2046
2047 pendingpri = NUMPRI - 1;
1348} 2048}
1349 2049
1350inline_speed void 2050inline_speed void
1351feed_reverse (EV_P_ W w) 2051feed_reverse (EV_P_ W w)
1352{ 2052{
1353 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2053 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1354 rfeeds [rfeedcnt++] = w; 2054 rfeeds [rfeedcnt++] = w;
1355} 2055}
1356 2056
1357inline_size void 2057inline_size void
1358feed_reverse_done (EV_P_ int revents) 2058feed_reverse_done (EV_P_ int revents)
… …
1398 if (expect_true (!anfd->reify)) 2098 if (expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents); 2099 fd_event_nocheck (EV_A_ fd, revents);
1400} 2100}
1401 2101
1402void 2102void
1403ev_feed_fd_event (EV_P_ int fd, int revents) 2103ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1404{ 2104{
1405 if (fd >= 0 && fd < anfdmax) 2105 if (fd >= 0 && fd < anfdmax)
1406 fd_event_nocheck (EV_A_ fd, revents); 2106 fd_event_nocheck (EV_A_ fd, revents);
1407} 2107}
1408 2108
… …
1466 2166
1467 fdchangecnt = 0; 2167 fdchangecnt = 0;
1468} 2168}
1469 2169
1470/* something about the given fd changed */ 2170/* something about the given fd changed */
1471inline_size void 2171inline_size
2172void
1472fd_change (EV_P_ int fd, int flags) 2173fd_change (EV_P_ int fd, int flags)
1473{ 2174{
1474 unsigned char reify = anfds [fd].reify; 2175 unsigned char reify = anfds [fd].reify;
1475 anfds [fd].reify |= flags; 2176 anfds [fd].reify |= flags;
1476 2177
1477 if (expect_true (!reify)) 2178 if (expect_true (!reify))
1478 { 2179 {
1479 ++fdchangecnt; 2180 ++fdchangecnt;
1480 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2181 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1481 fdchanges [fdchangecnt - 1] = fd; 2182 fdchanges [fdchangecnt - 1] = fd;
1482 } 2183 }
1483} 2184}
1484 2185
1485/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2186/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1486inline_speed void ecb_cold 2187inline_speed ecb_cold void
1487fd_kill (EV_P_ int fd) 2188fd_kill (EV_P_ int fd)
1488{ 2189{
1489 ev_io *w; 2190 ev_io *w;
1490 2191
1491 while ((w = (ev_io *)anfds [fd].head)) 2192 while ((w = (ev_io *)anfds [fd].head))
… …
1494 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2195 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1495 } 2196 }
1496} 2197}
1497 2198
1498/* check whether the given fd is actually valid, for error recovery */ 2199/* check whether the given fd is actually valid, for error recovery */
1499inline_size int ecb_cold 2200inline_size ecb_cold int
1500fd_valid (int fd) 2201fd_valid (int fd)
1501{ 2202{
1502#ifdef _WIN32 2203#ifdef _WIN32
1503 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2204 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1504#else 2205#else
1505 return fcntl (fd, F_GETFD) != -1; 2206 return fcntl (fd, F_GETFD) != -1;
1506#endif 2207#endif
1507} 2208}
1508 2209
1509/* called on EBADF to verify fds */ 2210/* called on EBADF to verify fds */
1510static void noinline ecb_cold 2211noinline ecb_cold
2212static void
1511fd_ebadf (EV_P) 2213fd_ebadf (EV_P)
1512{ 2214{
1513 int fd; 2215 int fd;
1514 2216
1515 for (fd = 0; fd < anfdmax; ++fd) 2217 for (fd = 0; fd < anfdmax; ++fd)
… …
1517 if (!fd_valid (fd) && errno == EBADF) 2219 if (!fd_valid (fd) && errno == EBADF)
1518 fd_kill (EV_A_ fd); 2220 fd_kill (EV_A_ fd);
1519} 2221}
1520 2222
1521/* called on ENOMEM in select/poll to kill some fds and retry */ 2223/* called on ENOMEM in select/poll to kill some fds and retry */
1522static void noinline ecb_cold 2224noinline ecb_cold
2225static void
1523fd_enomem (EV_P) 2226fd_enomem (EV_P)
1524{ 2227{
1525 int fd; 2228 int fd;
1526 2229
1527 for (fd = anfdmax; fd--; ) 2230 for (fd = anfdmax; fd--; )
… …
1531 break; 2234 break;
1532 } 2235 }
1533} 2236}
1534 2237
1535/* usually called after fork if backend needs to re-arm all fds from scratch */ 2238/* usually called after fork if backend needs to re-arm all fds from scratch */
1536static void noinline 2239noinline
2240static void
1537fd_rearm_all (EV_P) 2241fd_rearm_all (EV_P)
1538{ 2242{
1539 int fd; 2243 int fd;
1540 2244
1541 for (fd = 0; fd < anfdmax; ++fd) 2245 for (fd = 0; fd < anfdmax; ++fd)
… …
1722 2426
1723/*****************************************************************************/ 2427/*****************************************************************************/
1724 2428
1725#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1726 2430
1727static void noinline ecb_cold 2431noinline ecb_cold
2432static void
1728evpipe_init (EV_P) 2433evpipe_init (EV_P)
1729{ 2434{
1730 if (!ev_is_active (&pipe_w)) 2435 if (!ev_is_active (&pipe_w))
1731 { 2436 {
2437 int fds [2];
2438
1732# if EV_USE_EVENTFD 2439# if EV_USE_EVENTFD
2440 fds [0] = -1;
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2441 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL) 2442 if (fds [1] < 0 && errno == EINVAL)
1735 evfd = eventfd (0, 0); 2443 fds [1] = eventfd (0, 0);
1736 2444
1737 if (evfd >= 0) 2445 if (fds [1] < 0)
2446# endif
1738 { 2447 {
2448 while (pipe (fds))
2449 ev_syserr ("(libev) error creating signal/async pipe");
2450
2451 fd_intern (fds [0]);
2452 }
2453
1739 evpipe [0] = -1; 2454 evpipe [0] = fds [0];
1740 fd_intern (evfd); /* doing it twice doesn't hurt */ 2455
1741 ev_io_set (&pipe_w, evfd, EV_READ); 2456 if (evpipe [1] < 0)
2457 evpipe [1] = fds [1]; /* first call, set write fd */
2458 else
2459 {
2460 /* on subsequent calls, do not change evpipe [1] */
2461 /* so that evpipe_write can always rely on its value. */
2462 /* this branch does not do anything sensible on windows, */
2463 /* so must not be executed on windows */
2464
2465 dup2 (fds [1], evpipe [1]);
2466 close (fds [1]);
2467 }
2468
2469 fd_intern (evpipe [1]);
2470
2471 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2472 ev_io_start (EV_A_ &pipe_w);
2473 ev_unref (EV_A); /* watcher should not keep loop alive */
2474 }
2475}
2476
2477inline_speed void
2478evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2479{
2480 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2481
2482 if (expect_true (*flag))
2483 return;
2484
2485 *flag = 1;
2486 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2487
2488 pipe_write_skipped = 1;
2489
2490 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2491
2492 if (pipe_write_wanted)
2493 {
2494 int old_errno;
2495
2496 pipe_write_skipped = 0;
2497 ECB_MEMORY_FENCE_RELEASE;
2498
2499 old_errno = errno; /* save errno because write will clobber it */
2500
2501#if EV_USE_EVENTFD
2502 if (evpipe [0] < 0)
2503 {
2504 uint64_t counter = 1;
2505 write (evpipe [1], &counter, sizeof (uint64_t));
1742 } 2506 }
1743 else 2507 else
1744# endif 2508#endif
1745 { 2509 {
1746 while (pipe (evpipe)) 2510#ifdef _WIN32
1747 ev_syserr ("(libev) error creating signal/async pipe"); 2511 WSABUF buf;
1748 2512 DWORD sent;
1749 fd_intern (evpipe [0]); 2513 buf.buf = (char *)&buf;
1750 fd_intern (evpipe [1]); 2514 buf.len = 1;
1751 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2515 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1752 } 2516#else
1753
1754 ev_io_start (EV_A_ &pipe_w);
1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1756 }
1757}
1758
1759inline_speed void
1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1761{
1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1779 old_errno = errno; /* save errno because write will clobber it */
1780
1781#if EV_USE_EVENTFD
1782 if (evfd >= 0)
1783 {
1784 uint64_t counter = 1;
1785 write (evfd, &counter, sizeof (uint64_t));
1786 }
1787 else
1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1795 write (evpipe [1], &(evpipe [1]), 1); 2517 write (evpipe [1], &(evpipe [1]), 1);
2518#endif
1796 } 2519 }
1797 2520
1798 errno = old_errno; 2521 errno = old_errno;
1799 } 2522 }
1800} 2523}
… …
1807 int i; 2530 int i;
1808 2531
1809 if (revents & EV_READ) 2532 if (revents & EV_READ)
1810 { 2533 {
1811#if EV_USE_EVENTFD 2534#if EV_USE_EVENTFD
1812 if (evfd >= 0) 2535 if (evpipe [0] < 0)
1813 { 2536 {
1814 uint64_t counter; 2537 uint64_t counter;
1815 read (evfd, &counter, sizeof (uint64_t)); 2538 read (evpipe [1], &counter, sizeof (uint64_t));
1816 } 2539 }
1817 else 2540 else
1818#endif 2541#endif
1819 { 2542 {
1820 char dummy; 2543 char dummy[4];
1821 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2544#ifdef _WIN32
2545 WSABUF buf;
2546 DWORD recvd;
2547 DWORD flags = 0;
2548 buf.buf = dummy;
2549 buf.len = sizeof (dummy);
2550 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2551#else
1822 read (evpipe [0], &dummy, 1); 2552 read (evpipe [0], &dummy, sizeof (dummy));
2553#endif
1823 } 2554 }
1824 } 2555 }
1825 2556
1826 pipe_write_skipped = 0; 2557 pipe_write_skipped = 0;
2558
2559 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1827 2560
1828#if EV_SIGNAL_ENABLE 2561#if EV_SIGNAL_ENABLE
1829 if (sig_pending) 2562 if (sig_pending)
1830 { 2563 {
1831 sig_pending = 0; 2564 sig_pending = 0;
2565
2566 ECB_MEMORY_FENCE;
1832 2567
1833 for (i = EV_NSIG - 1; i--; ) 2568 for (i = EV_NSIG - 1; i--; )
1834 if (expect_false (signals [i].pending)) 2569 if (expect_false (signals [i].pending))
1835 ev_feed_signal_event (EV_A_ i + 1); 2570 ev_feed_signal_event (EV_A_ i + 1);
1836 } 2571 }
… …
1838 2573
1839#if EV_ASYNC_ENABLE 2574#if EV_ASYNC_ENABLE
1840 if (async_pending) 2575 if (async_pending)
1841 { 2576 {
1842 async_pending = 0; 2577 async_pending = 0;
2578
2579 ECB_MEMORY_FENCE;
1843 2580
1844 for (i = asynccnt; i--; ) 2581 for (i = asynccnt; i--; )
1845 if (asyncs [i]->sent) 2582 if (asyncs [i]->sent)
1846 { 2583 {
1847 asyncs [i]->sent = 0; 2584 asyncs [i]->sent = 0;
2585 ECB_MEMORY_FENCE_RELEASE;
1848 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2586 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1849 } 2587 }
1850 } 2588 }
1851#endif 2589#endif
1852} 2590}
1853 2591
1854/*****************************************************************************/ 2592/*****************************************************************************/
1855 2593
1856void 2594void
1857ev_feed_signal (int signum) 2595ev_feed_signal (int signum) EV_NOEXCEPT
1858{ 2596{
1859#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
2598 EV_P;
2599 ECB_MEMORY_FENCE_ACQUIRE;
1860 EV_P = signals [signum - 1].loop; 2600 EV_A = signals [signum - 1].loop;
1861 2601
1862 if (!EV_A) 2602 if (!EV_A)
1863 return; 2603 return;
1864#endif 2604#endif
1865 2605
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1; 2606 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending); 2607 evpipe_write (EV_A_ &sig_pending);
1871} 2608}
1872 2609
1873static void 2610static void
… …
1878#endif 2615#endif
1879 2616
1880 ev_feed_signal (signum); 2617 ev_feed_signal (signum);
1881} 2618}
1882 2619
1883void noinline 2620noinline
2621void
1884ev_feed_signal_event (EV_P_ int signum) 2622ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1885{ 2623{
1886 WL w; 2624 WL w;
1887 2625
1888 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2626 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1889 return; 2627 return;
1890 2628
1891 --signum; 2629 --signum;
1892 2630
1893#if EV_MULTIPLICITY 2631#if EV_MULTIPLICITY
… …
1897 if (expect_false (signals [signum].loop != EV_A)) 2635 if (expect_false (signals [signum].loop != EV_A))
1898 return; 2636 return;
1899#endif 2637#endif
1900 2638
1901 signals [signum].pending = 0; 2639 signals [signum].pending = 0;
2640 ECB_MEMORY_FENCE_RELEASE;
1902 2641
1903 for (w = signals [signum].head; w; w = w->next) 2642 for (w = signals [signum].head; w; w = w->next)
1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2643 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1905} 2644}
1906 2645
… …
1994# include "ev_port.c" 2733# include "ev_port.c"
1995#endif 2734#endif
1996#if EV_USE_KQUEUE 2735#if EV_USE_KQUEUE
1997# include "ev_kqueue.c" 2736# include "ev_kqueue.c"
1998#endif 2737#endif
2738#if EV_USE_LINUXAIO
2739# include "ev_linuxaio.c"
2740#endif
1999#if EV_USE_EPOLL 2741#if EV_USE_EPOLL
2000# include "ev_epoll.c" 2742# include "ev_epoll.c"
2001#endif 2743#endif
2002#if EV_USE_POLL 2744#if EV_USE_POLL
2003# include "ev_poll.c" 2745# include "ev_poll.c"
2004#endif 2746#endif
2005#if EV_USE_SELECT 2747#if EV_USE_SELECT
2006# include "ev_select.c" 2748# include "ev_select.c"
2007#endif 2749#endif
2008 2750
2009int ecb_cold 2751ecb_cold int
2010ev_version_major (void) 2752ev_version_major (void) EV_NOEXCEPT
2011{ 2753{
2012 return EV_VERSION_MAJOR; 2754 return EV_VERSION_MAJOR;
2013} 2755}
2014 2756
2015int ecb_cold 2757ecb_cold int
2016ev_version_minor (void) 2758ev_version_minor (void) EV_NOEXCEPT
2017{ 2759{
2018 return EV_VERSION_MINOR; 2760 return EV_VERSION_MINOR;
2019} 2761}
2020 2762
2021/* return true if we are running with elevated privileges and should ignore env variables */ 2763/* return true if we are running with elevated privileges and should ignore env variables */
2022int inline_size ecb_cold 2764inline_size ecb_cold int
2023enable_secure (void) 2765enable_secure (void)
2024{ 2766{
2025#ifdef _WIN32 2767#ifdef _WIN32
2026 return 0; 2768 return 0;
2027#else 2769#else
2028 return getuid () != geteuid () 2770 return getuid () != geteuid ()
2029 || getgid () != getegid (); 2771 || getgid () != getegid ();
2030#endif 2772#endif
2031} 2773}
2032 2774
2033unsigned int ecb_cold 2775ecb_cold
2776unsigned int
2034ev_supported_backends (void) 2777ev_supported_backends (void) EV_NOEXCEPT
2035{ 2778{
2036 unsigned int flags = 0; 2779 unsigned int flags = 0;
2037 2780
2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2781 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2039 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2782 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2040 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2783 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2784 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2041 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2785 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2042 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2786 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2043 2787
2044 return flags; 2788 return flags;
2045} 2789}
2046 2790
2047unsigned int ecb_cold 2791ecb_cold
2792unsigned int
2048ev_recommended_backends (void) 2793ev_recommended_backends (void) EV_NOEXCEPT
2049{ 2794{
2050 unsigned int flags = ev_supported_backends (); 2795 unsigned int flags = ev_supported_backends ();
2051 2796
2052#ifndef __NetBSD__ 2797#ifndef __NetBSD__
2053 /* kqueue is borked on everything but netbsd apparently */ 2798 /* kqueue is borked on everything but netbsd apparently */
… …
2061#endif 2806#endif
2062#ifdef __FreeBSD__ 2807#ifdef __FreeBSD__
2063 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2808 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2064#endif 2809#endif
2065 2810
2811 /* TODO: linuxaio is very experimental */
2812 flags &= ~EVBACKEND_LINUXAIO;
2813
2066 return flags; 2814 return flags;
2067} 2815}
2068 2816
2069unsigned int ecb_cold 2817ecb_cold
2818unsigned int
2070ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
2071{ 2820{
2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2073 2822
2074 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2823 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2075 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2824 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2077 2826
2078 return flags; 2827 return flags;
2079} 2828}
2080 2829
2081unsigned int 2830unsigned int
2082ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
2083{ 2832{
2084 return backend; 2833 return backend;
2085} 2834}
2086 2835
2087#if EV_FEATURE_API 2836#if EV_FEATURE_API
2088unsigned int 2837unsigned int
2089ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
2090{ 2839{
2091 return loop_count; 2840 return loop_count;
2092} 2841}
2093 2842
2094unsigned int 2843unsigned int
2095ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
2096{ 2845{
2097 return loop_depth; 2846 return loop_depth;
2098} 2847}
2099 2848
2100void 2849void
2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2102{ 2851{
2103 io_blocktime = interval; 2852 io_blocktime = interval;
2104} 2853}
2105 2854
2106void 2855void
2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2108{ 2857{
2109 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
2110} 2859}
2111 2860
2112void 2861void
2113ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2114{ 2863{
2115 userdata = data; 2864 userdata = data;
2116} 2865}
2117 2866
2118void * 2867void *
2119ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
2120{ 2869{
2121 return userdata; 2870 return userdata;
2122} 2871}
2123 2872
2124void 2873void
2125ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2874ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2126{ 2875{
2127 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
2128} 2877}
2129 2878
2130void 2879void
2131ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2880ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2132{ 2881{
2133 release_cb = release; 2882 release_cb = release;
2134 acquire_cb = acquire; 2883 acquire_cb = acquire;
2135} 2884}
2136#endif 2885#endif
2137 2886
2138/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
2139static void noinline ecb_cold 2888noinline ecb_cold
2889static void
2140loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2141{ 2891{
2142 if (!backend) 2892 if (!backend)
2143 { 2893 {
2144 origflags = flags; 2894 origflags = flags;
2145 2895
… …
2190#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
2191 async_pending = 0; 2941 async_pending = 0;
2192#endif 2942#endif
2193 pipe_write_skipped = 0; 2943 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0; 2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2195#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif 2949#endif
2198#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2201 2953
2202 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
2203 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
2204 2956
2205#if EV_USE_IOCP 2957#if EV_USE_IOCP
2206 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2207#endif 2959#endif
2208#if EV_USE_PORT 2960#if EV_USE_PORT
2209 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2210#endif 2962#endif
2211#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
2212 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2964 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
2965#endif
2966#if EV_USE_LINUXAIO
2967 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2213#endif 2968#endif
2214#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
2215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2216#endif 2971#endif
2217#if EV_USE_POLL 2972#if EV_USE_POLL
2218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2219#endif 2974#endif
2220#if EV_USE_SELECT 2975#if EV_USE_SELECT
2221 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2222#endif 2977#endif
2223 2978
2224 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
2225 2980
2226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2229#endif 2984#endif
2230 } 2985 }
2231} 2986}
2232 2987
2233/* free up a loop structure */ 2988/* free up a loop structure */
2234void ecb_cold 2989ecb_cold
2990void
2235ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
2236{ 2992{
2237 int i; 2993 int i;
2238 2994
2239#if EV_MULTIPLICITY 2995#if EV_MULTIPLICITY
… …
2250 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
2251 } 3007 }
2252#endif 3008#endif
2253 3009
2254#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2256 { 3012 {
2257 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
2259 } 3015 }
2260#endif 3016#endif
… …
2262 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
2263 { 3019 {
2264 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
2265 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
2266 3022
2267#if EV_USE_EVENTFD
2268 if (evfd >= 0)
2269 close (evfd);
2270#endif
2271
2272 if (evpipe [0] >= 0)
2273 {
2274 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2275 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2276 }
2277 } 3025 }
2278 3026
2279#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
2281 close (sigfd); 3029 close (sigfd);
… …
2288 3036
2289 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
2290 close (backend_fd); 3038 close (backend_fd);
2291 3039
2292#if EV_USE_IOCP 3040#if EV_USE_IOCP
2293 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2294#endif 3042#endif
2295#if EV_USE_PORT 3043#if EV_USE_PORT
2296 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2297#endif 3045#endif
2298#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
2299 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3047 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3048#endif
3049#if EV_USE_LINUXAIO
3050 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2300#endif 3051#endif
2301#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
2302 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2303#endif 3054#endif
2304#if EV_USE_POLL 3055#if EV_USE_POLL
2305 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2306#endif 3057#endif
2307#if EV_USE_SELECT 3058#if EV_USE_SELECT
2308 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2309#endif 3060#endif
2310 3061
2311 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
2312 { 3063 {
2313 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
2355 3106
2356inline_size void 3107inline_size void
2357loop_fork (EV_P) 3108loop_fork (EV_P)
2358{ 3109{
2359#if EV_USE_PORT 3110#if EV_USE_PORT
2360 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2361#endif 3112#endif
2362#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
2363 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3114 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3115#endif
3116#if EV_USE_LINUXAIO
3117 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2364#endif 3118#endif
2365#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
2366 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2367#endif 3121#endif
2368#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
2369 infy_fork (EV_A); 3123 infy_fork (EV_A);
2370#endif 3124#endif
2371 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2372 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
2373 { 3128 {
2374 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3129 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2375 3130
2376 ev_ref (EV_A); 3131 ev_ref (EV_A);
2377 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
2378 3133
2379#if EV_USE_EVENTFD
2380 if (evfd >= 0)
2381 close (evfd);
2382#endif
2383
2384 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
2385 {
2386 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
2387 EV_WIN32_CLOSE_FD (evpipe [1]);
2388 }
2389 3136
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2391 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
2392 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
2393 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2394#endif
2395 } 3140 }
3141#endif
2396 3142
2397 postfork = 0; 3143 postfork = 0;
2398} 3144}
2399 3145
2400#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
2401 3147
3148ecb_cold
2402struct ev_loop * ecb_cold 3149struct ev_loop *
2403ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
2404{ 3151{
2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2406 3153
2407 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
2408 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
2415} 3162}
2416 3163
2417#endif /* multiplicity */ 3164#endif /* multiplicity */
2418 3165
2419#if EV_VERIFY 3166#if EV_VERIFY
2420static void noinline ecb_cold 3167noinline ecb_cold
3168static void
2421verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
2422{ 3170{
2423 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3171 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2424 3172
2425 if (w->pending) 3173 if (w->pending)
2426 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3174 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2427} 3175}
2428 3176
2429static void noinline ecb_cold 3177noinline ecb_cold
3178static void
2430verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
2431{ 3180{
2432 int i; 3181 int i;
2433 3182
2434 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2439 3188
2440 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2441 } 3190 }
2442} 3191}
2443 3192
2444static void noinline ecb_cold 3193noinline ecb_cold
3194static void
2445array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
2446{ 3196{
2447 while (cnt--) 3197 while (cnt--)
2448 { 3198 {
2449 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2452} 3202}
2453#endif 3203#endif
2454 3204
2455#if EV_FEATURE_API 3205#if EV_FEATURE_API
2456void ecb_cold 3206void ecb_cold
2457ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2458{ 3208{
2459#if EV_VERIFY 3209#if EV_VERIFY
2460 int i; 3210 int i;
2461 WL w; 3211 WL w, w2;
2462 3212
2463 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2464 3214
2465 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2466 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2468 3218
2469 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2470 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2471 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2472 { 3225 {
2473 verify_watcher (EV_A_ (W)w); 3226 verify_watcher (EV_A_ (W)w);
3227
3228 if (j++ & 1)
3229 {
3230 assert (("libev: io watcher list contains a loop", w != w2));
3231 w2 = w2->next;
3232 }
3233
2474 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3234 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2475 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3235 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2476 } 3236 }
3237 }
2477 3238
2478 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2479 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2480 3241
2481#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2527#endif 3288#endif
2528} 3289}
2529#endif 3290#endif
2530 3291
2531#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2532struct ev_loop * ecb_cold 3294struct ev_loop *
2533#else 3295#else
2534int 3296int
2535#endif 3297#endif
2536ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2537{ 3299{
2538 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2539 { 3301 {
2540#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2541 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2560 3322
2561 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2562} 3324}
2563 3325
2564void 3326void
2565ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2566{ 3328{
2567 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2568} 3330}
2569 3331
2570/*****************************************************************************/ 3332/*****************************************************************************/
2571 3333
2572void 3334void
… …
2574{ 3336{
2575 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2576} 3338}
2577 3339
2578unsigned int 3340unsigned int
2579ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2580{ 3342{
2581 int pri; 3343 int pri;
2582 unsigned int count = 0; 3344 unsigned int count = 0;
2583 3345
2584 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2585 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2586 3348
2587 return count; 3349 return count;
2588} 3350}
2589 3351
2590void noinline 3352noinline
3353void
2591ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2592{ 3355{
2593 int pri; 3356 pendingpri = NUMPRI;
2594 3357
2595 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2596 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2597 { 3364 {
2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2599 3366
2600 p->w->pending = 0; 3367 p->w->pending = 0;
2601 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2602 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2603 } 3370 }
3371 }
3372 while (pendingpri);
2604} 3373}
2605 3374
2606#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2607/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
… …
2666 } 3435 }
2667} 3436}
2668 3437
2669#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2670 3439
2671static void noinline 3440noinline
3441static void
2672periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2673{ 3443{
2674 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2675 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2676 3446
… …
2698{ 3468{
2699 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2700 3470
2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2702 { 3472 {
2703 int feed_count = 0;
2704
2705 do 3473 do
2706 { 3474 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708 3476
2709 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3477 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2736 } 3504 }
2737} 3505}
2738 3506
2739/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2740/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3508/* TODO: maybe ensure that at least one event happens when jumping forward? */
2741static void noinline ecb_cold 3509noinline ecb_cold
3510static void
2742periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2743{ 3512{
2744 int i; 3513 int i;
2745 3514
2746 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2759 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2760} 3529}
2761#endif 3530#endif
2762 3531
2763/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2764static void noinline ecb_cold 3533noinline ecb_cold
3534static void
2765timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2766{ 3536{
2767 int i; 3537 int i;
2768 3538
2769 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2843 3613
2844 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2845 } 3615 }
2846} 3616}
2847 3617
2848void 3618int
2849ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2850{ 3620{
2851#if EV_FEATURE_API 3621#if EV_FEATURE_API
2852 ++loop_depth; 3622 ++loop_depth;
2853#endif 3623#endif
… …
2966#endif 3736#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2968 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970 3740
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2972 3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
2973 if (pipe_write_skipped) 3744 if (pipe_write_skipped)
2974 { 3745 {
2975 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3746 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 } 3748 }
… …
3010 loop_done = EVBREAK_CANCEL; 3781 loop_done = EVBREAK_CANCEL;
3011 3782
3012#if EV_FEATURE_API 3783#if EV_FEATURE_API
3013 --loop_depth; 3784 --loop_depth;
3014#endif 3785#endif
3015}
3016 3786
3787 return activecnt;
3788}
3789
3017void 3790void
3018ev_break (EV_P_ int how) 3791ev_break (EV_P_ int how) EV_NOEXCEPT
3019{ 3792{
3020 loop_done = how; 3793 loop_done = how;
3021} 3794}
3022 3795
3023void 3796void
3024ev_ref (EV_P) 3797ev_ref (EV_P) EV_NOEXCEPT
3025{ 3798{
3026 ++activecnt; 3799 ++activecnt;
3027} 3800}
3028 3801
3029void 3802void
3030ev_unref (EV_P) 3803ev_unref (EV_P) EV_NOEXCEPT
3031{ 3804{
3032 --activecnt; 3805 --activecnt;
3033} 3806}
3034 3807
3035void 3808void
3036ev_now_update (EV_P) 3809ev_now_update (EV_P) EV_NOEXCEPT
3037{ 3810{
3038 time_update (EV_A_ 1e100); 3811 time_update (EV_A_ 1e100);
3039} 3812}
3040 3813
3041void 3814void
3042ev_suspend (EV_P) 3815ev_suspend (EV_P) EV_NOEXCEPT
3043{ 3816{
3044 ev_now_update (EV_A); 3817 ev_now_update (EV_A);
3045} 3818}
3046 3819
3047void 3820void
3048ev_resume (EV_P) 3821ev_resume (EV_P) EV_NOEXCEPT
3049{ 3822{
3050 ev_tstamp mn_prev = mn_now; 3823 ev_tstamp mn_prev = mn_now;
3051 3824
3052 ev_now_update (EV_A); 3825 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev); 3826 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3092 w->pending = 0; 3865 w->pending = 0;
3093 } 3866 }
3094} 3867}
3095 3868
3096int 3869int
3097ev_clear_pending (EV_P_ void *w) 3870ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3098{ 3871{
3099 W w_ = (W)w; 3872 W w_ = (W)w;
3100 int pending = w_->pending; 3873 int pending = w_->pending;
3101 3874
3102 if (expect_true (pending)) 3875 if (expect_true (pending))
… …
3134 w->active = 0; 3907 w->active = 0;
3135} 3908}
3136 3909
3137/*****************************************************************************/ 3910/*****************************************************************************/
3138 3911
3139void noinline 3912noinline
3913void
3140ev_io_start (EV_P_ ev_io *w) 3914ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3141{ 3915{
3142 int fd = w->fd; 3916 int fd = w->fd;
3143 3917
3144 if (expect_false (ev_is_active (w))) 3918 if (expect_false (ev_is_active (w)))
3145 return; 3919 return;
… …
3148 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3922 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3149 3923
3150 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3151 3925
3152 ev_start (EV_A_ (W)w, 1); 3926 ev_start (EV_A_ (W)w, 1);
3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3927 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3154 wlist_add (&anfds[fd].head, (WL)w); 3928 wlist_add (&anfds[fd].head, (WL)w);
3929
3930 /* common bug, apparently */
3931 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3155 3932
3156 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3933 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3157 w->events &= ~EV__IOFDSET; 3934 w->events &= ~EV__IOFDSET;
3158 3935
3159 EV_FREQUENT_CHECK; 3936 EV_FREQUENT_CHECK;
3160} 3937}
3161 3938
3162void noinline 3939noinline
3940void
3163ev_io_stop (EV_P_ ev_io *w) 3941ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3164{ 3942{
3165 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
3167 return; 3945 return;
3168 3946
… …
3176 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3954 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3177 3955
3178 EV_FREQUENT_CHECK; 3956 EV_FREQUENT_CHECK;
3179} 3957}
3180 3958
3181void noinline 3959noinline
3960void
3182ev_timer_start (EV_P_ ev_timer *w) 3961ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3183{ 3962{
3184 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
3185 return; 3964 return;
3186 3965
3187 ev_at (w) += mn_now; 3966 ev_at (w) += mn_now;
… …
3190 3969
3191 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
3192 3971
3193 ++timercnt; 3972 ++timercnt;
3194 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3973 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3195 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3974 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3196 ANHE_w (timers [ev_active (w)]) = (WT)w; 3975 ANHE_w (timers [ev_active (w)]) = (WT)w;
3197 ANHE_at_cache (timers [ev_active (w)]); 3976 ANHE_at_cache (timers [ev_active (w)]);
3198 upheap (timers, ev_active (w)); 3977 upheap (timers, ev_active (w));
3199 3978
3200 EV_FREQUENT_CHECK; 3979 EV_FREQUENT_CHECK;
3201 3980
3202 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3981 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3203} 3982}
3204 3983
3205void noinline 3984noinline
3985void
3206ev_timer_stop (EV_P_ ev_timer *w) 3986ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3207{ 3987{
3208 clear_pending (EV_A_ (W)w); 3988 clear_pending (EV_A_ (W)w);
3209 if (expect_false (!ev_is_active (w))) 3989 if (expect_false (!ev_is_active (w)))
3210 return; 3990 return;
3211 3991
… …
3230 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
3231 4011
3232 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
3233} 4013}
3234 4014
3235void noinline 4015noinline
4016void
3236ev_timer_again (EV_P_ ev_timer *w) 4017ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3237{ 4018{
3238 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
4020
4021 clear_pending (EV_A_ (W)w);
3239 4022
3240 if (ev_is_active (w)) 4023 if (ev_is_active (w))
3241 { 4024 {
3242 if (w->repeat) 4025 if (w->repeat)
3243 { 4026 {
… …
3256 4039
3257 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
3258} 4041}
3259 4042
3260ev_tstamp 4043ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w) 4044ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4045{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4046 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3264} 4047}
3265 4048
3266#if EV_PERIODIC_ENABLE 4049#if EV_PERIODIC_ENABLE
3267void noinline 4050noinline
4051void
3268ev_periodic_start (EV_P_ ev_periodic *w) 4052ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3269{ 4053{
3270 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
3271 return; 4055 return;
3272 4056
3273 if (w->reschedule_cb) 4057 if (w->reschedule_cb)
… …
3282 4066
3283 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
3284 4068
3285 ++periodiccnt; 4069 ++periodiccnt;
3286 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4070 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3287 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4071 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3288 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4072 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3289 ANHE_at_cache (periodics [ev_active (w)]); 4073 ANHE_at_cache (periodics [ev_active (w)]);
3290 upheap (periodics, ev_active (w)); 4074 upheap (periodics, ev_active (w));
3291 4075
3292 EV_FREQUENT_CHECK; 4076 EV_FREQUENT_CHECK;
3293 4077
3294 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4078 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3295} 4079}
3296 4080
3297void noinline 4081noinline
4082void
3298ev_periodic_stop (EV_P_ ev_periodic *w) 4083ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3299{ 4084{
3300 clear_pending (EV_A_ (W)w); 4085 clear_pending (EV_A_ (W)w);
3301 if (expect_false (!ev_is_active (w))) 4086 if (expect_false (!ev_is_active (w)))
3302 return; 4087 return;
3303 4088
… …
3320 ev_stop (EV_A_ (W)w); 4105 ev_stop (EV_A_ (W)w);
3321 4106
3322 EV_FREQUENT_CHECK; 4107 EV_FREQUENT_CHECK;
3323} 4108}
3324 4109
3325void noinline 4110noinline
4111void
3326ev_periodic_again (EV_P_ ev_periodic *w) 4112ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3327{ 4113{
3328 /* TODO: use adjustheap and recalculation */ 4114 /* TODO: use adjustheap and recalculation */
3329 ev_periodic_stop (EV_A_ w); 4115 ev_periodic_stop (EV_A_ w);
3330 ev_periodic_start (EV_A_ w); 4116 ev_periodic_start (EV_A_ w);
3331} 4117}
… …
3335# define SA_RESTART 0 4121# define SA_RESTART 0
3336#endif 4122#endif
3337 4123
3338#if EV_SIGNAL_ENABLE 4124#if EV_SIGNAL_ENABLE
3339 4125
3340void noinline 4126noinline
4127void
3341ev_signal_start (EV_P_ ev_signal *w) 4128ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3342{ 4129{
3343 if (expect_false (ev_is_active (w))) 4130 if (expect_false (ev_is_active (w)))
3344 return; 4131 return;
3345 4132
3346 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4133 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3348#if EV_MULTIPLICITY 4135#if EV_MULTIPLICITY
3349 assert (("libev: a signal must not be attached to two different loops", 4136 assert (("libev: a signal must not be attached to two different loops",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4137 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3351 4138
3352 signals [w->signum - 1].loop = EV_A; 4139 signals [w->signum - 1].loop = EV_A;
4140 ECB_MEMORY_FENCE_RELEASE;
3353#endif 4141#endif
3354 4142
3355 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
3356 4144
3357#if EV_USE_SIGNALFD 4145#if EV_USE_SIGNALFD
… …
3416 } 4204 }
3417 4205
3418 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
3419} 4207}
3420 4208
3421void noinline 4209noinline
4210void
3422ev_signal_stop (EV_P_ ev_signal *w) 4211ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3423{ 4212{
3424 clear_pending (EV_A_ (W)w); 4213 clear_pending (EV_A_ (W)w);
3425 if (expect_false (!ev_is_active (w))) 4214 if (expect_false (!ev_is_active (w)))
3426 return; 4215 return;
3427 4216
… …
3458#endif 4247#endif
3459 4248
3460#if EV_CHILD_ENABLE 4249#if EV_CHILD_ENABLE
3461 4250
3462void 4251void
3463ev_child_start (EV_P_ ev_child *w) 4252ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3464{ 4253{
3465#if EV_MULTIPLICITY 4254#if EV_MULTIPLICITY
3466 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4255 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3467#endif 4256#endif
3468 if (expect_false (ev_is_active (w))) 4257 if (expect_false (ev_is_active (w)))
… …
3475 4264
3476 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3477} 4266}
3478 4267
3479void 4268void
3480ev_child_stop (EV_P_ ev_child *w) 4269ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3481{ 4270{
3482 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3483 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3484 return; 4273 return;
3485 4274
… …
3502 4291
3503#define DEF_STAT_INTERVAL 5.0074891 4292#define DEF_STAT_INTERVAL 5.0074891
3504#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4293#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3505#define MIN_STAT_INTERVAL 0.1074891 4294#define MIN_STAT_INTERVAL 0.1074891
3506 4295
3507static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4296noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3508 4297
3509#if EV_USE_INOTIFY 4298#if EV_USE_INOTIFY
3510 4299
3511/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4300/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4301# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3513 4302
3514static void noinline 4303noinline
4304static void
3515infy_add (EV_P_ ev_stat *w) 4305infy_add (EV_P_ ev_stat *w)
3516{ 4306{
3517 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); 4307 w->wd = inotify_add_watch (fs_fd, w->path,
4308 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4309 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4310 | IN_DONT_FOLLOW | IN_MASK_ADD);
3518 4311
3519 if (w->wd >= 0) 4312 if (w->wd >= 0)
3520 { 4313 {
3521 struct statfs sfs; 4314 struct statfs sfs;
3522 4315
… …
3526 4319
3527 if (!fs_2625) 4320 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4321 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs) 4322 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */ 4323 && (sfs.f_type == 0x1373 /* devfs */
4324 || sfs.f_type == 0x4006 /* fat */
4325 || sfs.f_type == 0x4d44 /* msdos */
3531 || sfs.f_type == 0xEF53 /* ext2/3 */ 4326 || sfs.f_type == 0xEF53 /* ext2/3 */
4327 || sfs.f_type == 0x72b6 /* jffs2 */
4328 || sfs.f_type == 0x858458f6 /* ramfs */
4329 || sfs.f_type == 0x5346544e /* ntfs */
3532 || sfs.f_type == 0x3153464a /* jfs */ 4330 || sfs.f_type == 0x3153464a /* jfs */
4331 || sfs.f_type == 0x9123683e /* btrfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */ 4332 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */ 4333 || sfs.f_type == 0x01021994 /* tmpfs */
3535 || sfs.f_type == 0x58465342 /* xfs */)) 4334 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4335 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else 4336 else
3538 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4337 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3539 } 4338 }
… …
3574 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4373 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3575 ev_timer_again (EV_A_ &w->timer); 4374 ev_timer_again (EV_A_ &w->timer);
3576 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4375 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3577} 4376}
3578 4377
3579static void noinline 4378noinline
4379static void
3580infy_del (EV_P_ ev_stat *w) 4380infy_del (EV_P_ ev_stat *w)
3581{ 4381{
3582 int slot; 4382 int slot;
3583 int wd = w->wd; 4383 int wd = w->wd;
3584 4384
… …
3591 4391
3592 /* remove this watcher, if others are watching it, they will rearm */ 4392 /* remove this watcher, if others are watching it, they will rearm */
3593 inotify_rm_watch (fs_fd, wd); 4393 inotify_rm_watch (fs_fd, wd);
3594} 4394}
3595 4395
3596static void noinline 4396noinline
4397static void
3597infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4398infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3598{ 4399{
3599 if (slot < 0) 4400 if (slot < 0)
3600 /* overflow, need to check for all hash slots */ 4401 /* overflow, need to check for all hash slots */
3601 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4402 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3637 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4438 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3638 ofs += sizeof (struct inotify_event) + ev->len; 4439 ofs += sizeof (struct inotify_event) + ev->len;
3639 } 4440 }
3640} 4441}
3641 4442
3642inline_size void ecb_cold 4443inline_size ecb_cold
4444void
3643ev_check_2625 (EV_P) 4445ev_check_2625 (EV_P)
3644{ 4446{
3645 /* kernels < 2.6.25 are borked 4447 /* kernels < 2.6.25 are borked
3646 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4448 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3647 */ 4449 */
… …
3652} 4454}
3653 4455
3654inline_size int 4456inline_size int
3655infy_newfd (void) 4457infy_newfd (void)
3656{ 4458{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4459#if defined IN_CLOEXEC && defined IN_NONBLOCK
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4460 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0) 4461 if (fd >= 0)
3660 return fd; 4462 return fd;
3661#endif 4463#endif
3662 return inotify_init (); 4464 return inotify_init ();
… …
3737#else 4539#else
3738# define EV_LSTAT(p,b) lstat (p, b) 4540# define EV_LSTAT(p,b) lstat (p, b)
3739#endif 4541#endif
3740 4542
3741void 4543void
3742ev_stat_stat (EV_P_ ev_stat *w) 4544ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3743{ 4545{
3744 if (lstat (w->path, &w->attr) < 0) 4546 if (lstat (w->path, &w->attr) < 0)
3745 w->attr.st_nlink = 0; 4547 w->attr.st_nlink = 0;
3746 else if (!w->attr.st_nlink) 4548 else if (!w->attr.st_nlink)
3747 w->attr.st_nlink = 1; 4549 w->attr.st_nlink = 1;
3748} 4550}
3749 4551
3750static void noinline 4552noinline
4553static void
3751stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4554stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3752{ 4555{
3753 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4556 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3754 4557
3755 ev_statdata prev = w->attr; 4558 ev_statdata prev = w->attr;
… …
3786 ev_feed_event (EV_A_ w, EV_STAT); 4589 ev_feed_event (EV_A_ w, EV_STAT);
3787 } 4590 }
3788} 4591}
3789 4592
3790void 4593void
3791ev_stat_start (EV_P_ ev_stat *w) 4594ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3792{ 4595{
3793 if (expect_false (ev_is_active (w))) 4596 if (expect_false (ev_is_active (w)))
3794 return; 4597 return;
3795 4598
3796 ev_stat_stat (EV_A_ w); 4599 ev_stat_stat (EV_A_ w);
… …
3817 4620
3818 EV_FREQUENT_CHECK; 4621 EV_FREQUENT_CHECK;
3819} 4622}
3820 4623
3821void 4624void
3822ev_stat_stop (EV_P_ ev_stat *w) 4625ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3823{ 4626{
3824 clear_pending (EV_A_ (W)w); 4627 clear_pending (EV_A_ (W)w);
3825 if (expect_false (!ev_is_active (w))) 4628 if (expect_false (!ev_is_active (w)))
3826 return; 4629 return;
3827 4630
… …
3843} 4646}
3844#endif 4647#endif
3845 4648
3846#if EV_IDLE_ENABLE 4649#if EV_IDLE_ENABLE
3847void 4650void
3848ev_idle_start (EV_P_ ev_idle *w) 4651ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3849{ 4652{
3850 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3851 return; 4654 return;
3852 4655
3853 pri_adjust (EV_A_ (W)w); 4656 pri_adjust (EV_A_ (W)w);
… …
3858 int active = ++idlecnt [ABSPRI (w)]; 4661 int active = ++idlecnt [ABSPRI (w)];
3859 4662
3860 ++idleall; 4663 ++idleall;
3861 ev_start (EV_A_ (W)w, active); 4664 ev_start (EV_A_ (W)w, active);
3862 4665
3863 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4666 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3864 idles [ABSPRI (w)][active - 1] = w; 4667 idles [ABSPRI (w)][active - 1] = w;
3865 } 4668 }
3866 4669
3867 EV_FREQUENT_CHECK; 4670 EV_FREQUENT_CHECK;
3868} 4671}
3869 4672
3870void 4673void
3871ev_idle_stop (EV_P_ ev_idle *w) 4674ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3872{ 4675{
3873 clear_pending (EV_A_ (W)w); 4676 clear_pending (EV_A_ (W)w);
3874 if (expect_false (!ev_is_active (w))) 4677 if (expect_false (!ev_is_active (w)))
3875 return; 4678 return;
3876 4679
… …
3890} 4693}
3891#endif 4694#endif
3892 4695
3893#if EV_PREPARE_ENABLE 4696#if EV_PREPARE_ENABLE
3894void 4697void
3895ev_prepare_start (EV_P_ ev_prepare *w) 4698ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3896{ 4699{
3897 if (expect_false (ev_is_active (w))) 4700 if (expect_false (ev_is_active (w)))
3898 return; 4701 return;
3899 4702
3900 EV_FREQUENT_CHECK; 4703 EV_FREQUENT_CHECK;
3901 4704
3902 ev_start (EV_A_ (W)w, ++preparecnt); 4705 ev_start (EV_A_ (W)w, ++preparecnt);
3903 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4706 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3904 prepares [preparecnt - 1] = w; 4707 prepares [preparecnt - 1] = w;
3905 4708
3906 EV_FREQUENT_CHECK; 4709 EV_FREQUENT_CHECK;
3907} 4710}
3908 4711
3909void 4712void
3910ev_prepare_stop (EV_P_ ev_prepare *w) 4713ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3911{ 4714{
3912 clear_pending (EV_A_ (W)w); 4715 clear_pending (EV_A_ (W)w);
3913 if (expect_false (!ev_is_active (w))) 4716 if (expect_false (!ev_is_active (w)))
3914 return; 4717 return;
3915 4718
… …
3928} 4731}
3929#endif 4732#endif
3930 4733
3931#if EV_CHECK_ENABLE 4734#if EV_CHECK_ENABLE
3932void 4735void
3933ev_check_start (EV_P_ ev_check *w) 4736ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3934{ 4737{
3935 if (expect_false (ev_is_active (w))) 4738 if (expect_false (ev_is_active (w)))
3936 return; 4739 return;
3937 4740
3938 EV_FREQUENT_CHECK; 4741 EV_FREQUENT_CHECK;
3939 4742
3940 ev_start (EV_A_ (W)w, ++checkcnt); 4743 ev_start (EV_A_ (W)w, ++checkcnt);
3941 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4744 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3942 checks [checkcnt - 1] = w; 4745 checks [checkcnt - 1] = w;
3943 4746
3944 EV_FREQUENT_CHECK; 4747 EV_FREQUENT_CHECK;
3945} 4748}
3946 4749
3947void 4750void
3948ev_check_stop (EV_P_ ev_check *w) 4751ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3949{ 4752{
3950 clear_pending (EV_A_ (W)w); 4753 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4754 if (expect_false (!ev_is_active (w)))
3952 return; 4755 return;
3953 4756
… …
3965 EV_FREQUENT_CHECK; 4768 EV_FREQUENT_CHECK;
3966} 4769}
3967#endif 4770#endif
3968 4771
3969#if EV_EMBED_ENABLE 4772#if EV_EMBED_ENABLE
3970void noinline 4773noinline
4774void
3971ev_embed_sweep (EV_P_ ev_embed *w) 4775ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3972{ 4776{
3973 ev_run (w->other, EVRUN_NOWAIT); 4777 ev_run (w->other, EVRUN_NOWAIT);
3974} 4778}
3975 4779
3976static void 4780static void
… …
4024 ev_idle_stop (EV_A_ idle); 4828 ev_idle_stop (EV_A_ idle);
4025} 4829}
4026#endif 4830#endif
4027 4831
4028void 4832void
4029ev_embed_start (EV_P_ ev_embed *w) 4833ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4030{ 4834{
4031 if (expect_false (ev_is_active (w))) 4835 if (expect_false (ev_is_active (w)))
4032 return; 4836 return;
4033 4837
4034 { 4838 {
… …
4055 4859
4056 EV_FREQUENT_CHECK; 4860 EV_FREQUENT_CHECK;
4057} 4861}
4058 4862
4059void 4863void
4060ev_embed_stop (EV_P_ ev_embed *w) 4864ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 4865{
4062 clear_pending (EV_A_ (W)w); 4866 clear_pending (EV_A_ (W)w);
4063 if (expect_false (!ev_is_active (w))) 4867 if (expect_false (!ev_is_active (w)))
4064 return; 4868 return;
4065 4869
… …
4075} 4879}
4076#endif 4880#endif
4077 4881
4078#if EV_FORK_ENABLE 4882#if EV_FORK_ENABLE
4079void 4883void
4080ev_fork_start (EV_P_ ev_fork *w) 4884ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4081{ 4885{
4082 if (expect_false (ev_is_active (w))) 4886 if (expect_false (ev_is_active (w)))
4083 return; 4887 return;
4084 4888
4085 EV_FREQUENT_CHECK; 4889 EV_FREQUENT_CHECK;
4086 4890
4087 ev_start (EV_A_ (W)w, ++forkcnt); 4891 ev_start (EV_A_ (W)w, ++forkcnt);
4088 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4892 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4089 forks [forkcnt - 1] = w; 4893 forks [forkcnt - 1] = w;
4090 4894
4091 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
4092} 4896}
4093 4897
4094void 4898void
4095ev_fork_stop (EV_P_ ev_fork *w) 4899ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4096{ 4900{
4097 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
4098 if (expect_false (!ev_is_active (w))) 4902 if (expect_false (!ev_is_active (w)))
4099 return; 4903 return;
4100 4904
… …
4113} 4917}
4114#endif 4918#endif
4115 4919
4116#if EV_CLEANUP_ENABLE 4920#if EV_CLEANUP_ENABLE
4117void 4921void
4118ev_cleanup_start (EV_P_ ev_cleanup *w) 4922ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4119{ 4923{
4120 if (expect_false (ev_is_active (w))) 4924 if (expect_false (ev_is_active (w)))
4121 return; 4925 return;
4122 4926
4123 EV_FREQUENT_CHECK; 4927 EV_FREQUENT_CHECK;
4124 4928
4125 ev_start (EV_A_ (W)w, ++cleanupcnt); 4929 ev_start (EV_A_ (W)w, ++cleanupcnt);
4126 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4930 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4127 cleanups [cleanupcnt - 1] = w; 4931 cleanups [cleanupcnt - 1] = w;
4128 4932
4129 /* cleanup watchers should never keep a refcount on the loop */ 4933 /* cleanup watchers should never keep a refcount on the loop */
4130 ev_unref (EV_A); 4934 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK; 4935 EV_FREQUENT_CHECK;
4132} 4936}
4133 4937
4134void 4938void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w) 4939ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4136{ 4940{
4137 clear_pending (EV_A_ (W)w); 4941 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w))) 4942 if (expect_false (!ev_is_active (w)))
4139 return; 4943 return;
4140 4944
… …
4154} 4958}
4155#endif 4959#endif
4156 4960
4157#if EV_ASYNC_ENABLE 4961#if EV_ASYNC_ENABLE
4158void 4962void
4159ev_async_start (EV_P_ ev_async *w) 4963ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4160{ 4964{
4161 if (expect_false (ev_is_active (w))) 4965 if (expect_false (ev_is_active (w)))
4162 return; 4966 return;
4163 4967
4164 w->sent = 0; 4968 w->sent = 0;
… …
4166 evpipe_init (EV_A); 4970 evpipe_init (EV_A);
4167 4971
4168 EV_FREQUENT_CHECK; 4972 EV_FREQUENT_CHECK;
4169 4973
4170 ev_start (EV_A_ (W)w, ++asynccnt); 4974 ev_start (EV_A_ (W)w, ++asynccnt);
4171 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4975 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4172 asyncs [asynccnt - 1] = w; 4976 asyncs [asynccnt - 1] = w;
4173 4977
4174 EV_FREQUENT_CHECK; 4978 EV_FREQUENT_CHECK;
4175} 4979}
4176 4980
4177void 4981void
4178ev_async_stop (EV_P_ ev_async *w) 4982ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4179{ 4983{
4180 clear_pending (EV_A_ (W)w); 4984 clear_pending (EV_A_ (W)w);
4181 if (expect_false (!ev_is_active (w))) 4985 if (expect_false (!ev_is_active (w)))
4182 return; 4986 return;
4183 4987
… …
4194 4998
4195 EV_FREQUENT_CHECK; 4999 EV_FREQUENT_CHECK;
4196} 5000}
4197 5001
4198void 5002void
4199ev_async_send (EV_P_ ev_async *w) 5003ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4200{ 5004{
4201 w->sent = 1; 5005 w->sent = 1;
4202 evpipe_write (EV_A_ &async_pending); 5006 evpipe_write (EV_A_ &async_pending);
4203} 5007}
4204#endif 5008#endif
… …
4241 5045
4242 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5046 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4243} 5047}
4244 5048
4245void 5049void
4246ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5050ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4247{ 5051{
4248 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5052 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4249
4250 if (expect_false (!once))
4251 {
4252 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4253 return;
4254 }
4255 5053
4256 once->cb = cb; 5054 once->cb = cb;
4257 once->arg = arg; 5055 once->arg = arg;
4258 5056
4259 ev_init (&once->io, once_cb_io); 5057 ev_init (&once->io, once_cb_io);
… …
4272} 5070}
4273 5071
4274/*****************************************************************************/ 5072/*****************************************************************************/
4275 5073
4276#if EV_WALK_ENABLE 5074#if EV_WALK_ENABLE
4277void ecb_cold 5075ecb_cold
5076void
4278ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5077ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4279{ 5078{
4280 int i, j; 5079 int i, j;
4281 ev_watcher_list *wl, *wn; 5080 ev_watcher_list *wl, *wn;
4282 5081
4283 if (types & (EV_IO | EV_EMBED)) 5082 if (types & (EV_IO | EV_EMBED))
… …
4389 5188
4390#if EV_MULTIPLICITY 5189#if EV_MULTIPLICITY
4391 #include "ev_wrap.h" 5190 #include "ev_wrap.h"
4392#endif 5191#endif
4393 5192
4394EV_CPP(})
4395

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