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Comparing libev/ev.c (file contents):
Revision 1.400 by root, Sat Oct 15 09:05:03 2011 UTC vs.
Revision 1.500 by root, Mon Jul 1 20:47:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
114# endif 114# endif
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif
119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
118# endif 127# endif
119 128
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 129# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 130# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 131# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
… …
162# define EV_USE_EVENTFD 0 171# define EV_USE_EVENTFD 0
163# endif 172# endif
164 173
165#endif 174#endif
166 175
176/* OS X, in its infinite idiocy, actually HARDCODES
177 * a limit of 1024 into their select. Where people have brains,
178 * OS X engineers apparently have a vacuum. Or maybe they were
179 * ordered to have a vacuum, or they do anything for money.
180 * This might help. Or not.
181 * Note that this must be defined early, as other include files
182 * will rely on this define as well.
183 */
184#define _DARWIN_UNLIMITED_SELECT 1
185
167#include <stdlib.h> 186#include <stdlib.h>
168#include <string.h> 187#include <string.h>
169#include <fcntl.h> 188#include <fcntl.h>
170#include <stddef.h> 189#include <stddef.h>
171 190
… …
183# include EV_H 202# include EV_H
184#else 203#else
185# include "ev.h" 204# include "ev.h"
186#endif 205#endif
187 206
207#if EV_NO_THREADS
208# undef EV_NO_SMP
209# define EV_NO_SMP 1
210# undef ECB_NO_THREADS
211# define ECB_NO_THREADS 1
212#endif
213#if EV_NO_SMP
214# undef EV_NO_SMP
215# define ECB_NO_SMP 1
216#endif
217
188#ifndef _WIN32 218#ifndef _WIN32
189# include <sys/time.h> 219# include <sys/time.h>
190# include <sys/wait.h> 220# include <sys/wait.h>
191# include <unistd.h> 221# include <unistd.h>
192#else 222#else
193# include <io.h> 223# include <io.h>
194# define WIN32_LEAN_AND_MEAN 224# define WIN32_LEAN_AND_MEAN
225# include <winsock2.h>
195# include <windows.h> 226# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 227# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 228# define EV_SELECT_IS_WINSOCKET 1
198# endif 229# endif
199# undef EV_AVOID_STDIO 230# undef EV_AVOID_STDIO
200#endif 231#endif
201 232
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
209
210/* this block tries to deduce configuration from header-defined symbols and defaults */ 233/* this block tries to deduce configuration from header-defined symbols and defaults */
211 234
212/* try to deduce the maximum number of signals on this platform */ 235/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 236#if defined EV_NSIG
214/* use what's provided */ 237/* use what's provided */
215#elif defined (NSIG) 238#elif defined NSIG
216# define EV_NSIG (NSIG) 239# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 240#elif defined _NSIG
218# define EV_NSIG (_NSIG) 241# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 242#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 243# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 244#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 245# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 246#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 247# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 248#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 249# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 250#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 251# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 252#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 253# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 254#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 255# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 256#else
234# error "unable to find value for NSIG, please report" 257# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 258#endif
239 259
240#ifndef EV_USE_FLOOR 260#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 261# define EV_USE_FLOOR 0
242#endif 262#endif
243 263
244#ifndef EV_USE_CLOCK_SYSCALL 264#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 265# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 266# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 267# else
248# define EV_USE_CLOCK_SYSCALL 0 268# define EV_USE_CLOCK_SYSCALL 0
249# endif 269# endif
250#endif 270#endif
251 271
272#if !(_POSIX_TIMERS > 0)
273# ifndef EV_USE_MONOTONIC
274# define EV_USE_MONOTONIC 0
275# endif
276# ifndef EV_USE_REALTIME
277# define EV_USE_REALTIME 0
278# endif
279#endif
280
252#ifndef EV_USE_MONOTONIC 281#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 282# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 283# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 284# else
256# define EV_USE_MONOTONIC 0 285# define EV_USE_MONOTONIC 0
257# endif 286# endif
258#endif 287#endif
… …
295 324
296#ifndef EV_USE_PORT 325#ifndef EV_USE_PORT
297# define EV_USE_PORT 0 326# define EV_USE_PORT 0
298#endif 327#endif
299 328
329#ifndef EV_USE_LINUXAIO
330# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
331# define EV_USE_LINUXAIO 1
332# else
333# define EV_USE_LINUXAIO 0
334# endif
335#endif
336
300#ifndef EV_USE_INOTIFY 337#ifndef EV_USE_INOTIFY
301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 338# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
302# define EV_USE_INOTIFY EV_FEATURE_OS 339# define EV_USE_INOTIFY EV_FEATURE_OS
303# else 340# else
304# define EV_USE_INOTIFY 0 341# define EV_USE_INOTIFY 0
… …
345 382
346#ifndef EV_HEAP_CACHE_AT 383#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 384# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 385#endif
349 386
387#ifdef __ANDROID__
388/* supposedly, android doesn't typedef fd_mask */
389# undef EV_USE_SELECT
390# define EV_USE_SELECT 0
391/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
392# undef EV_USE_CLOCK_SYSCALL
393# define EV_USE_CLOCK_SYSCALL 0
394#endif
395
396/* aix's poll.h seems to cause lots of trouble */
397#ifdef _AIX
398/* AIX has a completely broken poll.h header */
399# undef EV_USE_POLL
400# define EV_USE_POLL 0
401#endif
402
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 403/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */ 404/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 405#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 406# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 407# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 408# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 409# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 410# define EV_USE_MONOTONIC 1
358# else 411# else
… …
361# endif 414# endif
362#endif 415#endif
363 416
364/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 417/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365 418
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 419#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 420# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 421# define EV_USE_MONOTONIC 0
375#endif 422#endif
376 423
… …
384# define EV_USE_INOTIFY 0 431# define EV_USE_INOTIFY 0
385#endif 432#endif
386 433
387#if !EV_USE_NANOSLEEP 434#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 435/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 436# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 437# include <sys/select.h>
438# endif
439#endif
440
441#if EV_USE_LINUXAIO
442# include <sys/syscall.h>
443# if !SYS_io_getevents || !EV_USE_EPOLL /* ev_linxaio uses ev_poll.c:ev_epoll_create */
444# undef EV_USE_LINUXAIO
445# define EV_USE_LINUXAIO 0
391# endif 446# endif
392#endif 447#endif
393 448
394#if EV_USE_INOTIFY 449#if EV_USE_INOTIFY
395# include <sys/statfs.h> 450# include <sys/statfs.h>
… …
397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 452/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
398# ifndef IN_DONT_FOLLOW 453# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 454# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 455# define EV_USE_INOTIFY 0
401# endif 456# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 457#endif
407 458
408#if EV_USE_EVENTFD 459#if EV_USE_EVENTFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 460/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 461# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 518/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 519/* ECB.H BEGIN */
469/* 520/*
470 * libecb - http://software.schmorp.de/pkg/libecb 521 * libecb - http://software.schmorp.de/pkg/libecb
471 * 522 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 523 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 524 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 525 * All rights reserved.
475 * 526 *
476 * Redistribution and use in source and binary forms, with or without modifica- 527 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 528 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 542 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 543 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 544 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 545 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 546 * OF THE POSSIBILITY OF SUCH DAMAGE.
547 *
548 * Alternatively, the contents of this file may be used under the terms of
549 * the GNU General Public License ("GPL") version 2 or any later version,
550 * in which case the provisions of the GPL are applicable instead of
551 * the above. If you wish to allow the use of your version of this file
552 * only under the terms of the GPL and not to allow others to use your
553 * version of this file under the BSD license, indicate your decision
554 * by deleting the provisions above and replace them with the notice
555 * and other provisions required by the GPL. If you do not delete the
556 * provisions above, a recipient may use your version of this file under
557 * either the BSD or the GPL.
496 */ 558 */
497 559
498#ifndef ECB_H 560#ifndef ECB_H
499#define ECB_H 561#define ECB_H
562
563/* 16 bits major, 16 bits minor */
564#define ECB_VERSION 0x00010006
500 565
501#ifdef _WIN32 566#ifdef _WIN32
502 typedef signed char int8_t; 567 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 568 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 569 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 575 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 576 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 577 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 578 typedef unsigned __int64 uint64_t;
514 #endif 579 #endif
580 #ifdef _WIN64
581 #define ECB_PTRSIZE 8
582 typedef uint64_t uintptr_t;
583 typedef int64_t intptr_t;
584 #else
585 #define ECB_PTRSIZE 4
586 typedef uint32_t uintptr_t;
587 typedef int32_t intptr_t;
588 #endif
515#else 589#else
516 #include <inttypes.h> 590 #include <inttypes.h>
591 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
592 #define ECB_PTRSIZE 8
593 #else
594 #define ECB_PTRSIZE 4
595 #endif
596#endif
597
598#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
599#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
600
601/* work around x32 idiocy by defining proper macros */
602#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
603 #if _ILP32
604 #define ECB_AMD64_X32 1
605 #else
606 #define ECB_AMD64 1
607 #endif
517#endif 608#endif
518 609
519/* many compilers define _GNUC_ to some versions but then only implement 610/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 611 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 612 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 613 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 614 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 615 * an issue with that they should have done it right in the first place.
525 */ 616 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 617#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 618 #define ECB_GCC_VERSION(major,minor) 0
529 #else 619#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 620 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 621#endif
622
623#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
624
625#if __clang__ && defined __has_builtin
626 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
627#else
628 #define ECB_CLANG_BUILTIN(x) 0
629#endif
630
631#if __clang__ && defined __has_extension
632 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
633#else
634 #define ECB_CLANG_EXTENSION(x) 0
635#endif
636
637#define ECB_CPP (__cplusplus+0)
638#define ECB_CPP11 (__cplusplus >= 201103L)
639#define ECB_CPP14 (__cplusplus >= 201402L)
640#define ECB_CPP17 (__cplusplus >= 201703L)
641
642#if ECB_CPP
643 #define ECB_C 0
644 #define ECB_STDC_VERSION 0
645#else
646 #define ECB_C 1
647 #define ECB_STDC_VERSION __STDC_VERSION__
648#endif
649
650#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
651#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
652#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
653
654#if ECB_CPP
655 #define ECB_EXTERN_C extern "C"
656 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
657 #define ECB_EXTERN_C_END }
658#else
659 #define ECB_EXTERN_C extern
660 #define ECB_EXTERN_C_BEG
661 #define ECB_EXTERN_C_END
532#endif 662#endif
533 663
534/*****************************************************************************/ 664/*****************************************************************************/
535 665
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 666/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 667/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 668
539#if ECB_NO_THREADS || ECB_NO_SMP 669#if ECB_NO_THREADS
670 #define ECB_NO_SMP 1
671#endif
672
673#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 674 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 675#endif
542 676
677/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
678#if __xlC__ && ECB_CPP
679 #include <builtins.h>
680#endif
681
682#if 1400 <= _MSC_VER
683 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
684#endif
685
543#ifndef ECB_MEMORY_FENCE 686#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 687 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
688 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
545 #if __i386__ 689 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 691 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 692 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
549 #elif __amd64 693 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 695 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 696 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 697 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 698 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
699 #elif defined __ARM_ARCH_2__ \
700 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
701 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
702 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
703 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
704 || defined __ARM_ARCH_5TEJ__
705 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 706 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 707 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
708 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 709 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 710 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 711 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 712 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
713 #elif __aarch64__
714 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
715 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
716 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
717 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
718 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
719 #elif defined __s390__ || defined __s390x__
720 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
721 #elif defined __mips__
722 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
723 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
724 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
725 #elif defined __alpha__
726 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
727 #elif defined __hppa__
728 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
729 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
730 #elif defined __ia64__
731 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
732 #elif defined __m68k__
733 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
734 #elif defined __m88k__
735 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
736 #elif defined __sh__
737 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
561 #endif 738 #endif
562 #endif 739 #endif
563#endif 740#endif
564 741
565#ifndef ECB_MEMORY_FENCE 742#ifndef ECB_MEMORY_FENCE
743 #if ECB_GCC_VERSION(4,7)
744 /* see comment below (stdatomic.h) about the C11 memory model. */
745 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
746 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
747 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
748 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
749
750 #elif ECB_CLANG_EXTENSION(c_atomic)
751 /* see comment below (stdatomic.h) about the C11 memory model. */
752 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
753 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
754 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
755 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
756
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 757 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 758 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 759 #elif _MSC_VER >= 1500 /* VC++ 2008 */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 760 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
761 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
762 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
763 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
764 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 765 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 766 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 767 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 768 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 769 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 770 #elif defined _WIN32
576 #include <WinNT.h> 771 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 772 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
773 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
774 #include <mbarrier.h>
775 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
776 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
777 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
778 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
779 #elif __xlC__
780 #define ECB_MEMORY_FENCE __sync ()
781 #endif
782#endif
783
784#ifndef ECB_MEMORY_FENCE
785 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
786 /* we assume that these memory fences work on all variables/all memory accesses, */
787 /* not just C11 atomics and atomic accesses */
788 #include <stdatomic.h>
789 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
790 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
791 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
578 #endif 792 #endif
579#endif 793#endif
580 794
581#ifndef ECB_MEMORY_FENCE 795#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 796 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 808 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 809 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 810 #endif
597#endif 811#endif
598 812
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 813#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 814 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 815#endif
602 816
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 817#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 818 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 819#endif
606 820
821#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
822 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
823#endif
824
607/*****************************************************************************/ 825/*****************************************************************************/
608 826
609#define ECB_C99 (__STDC_VERSION__ >= 199901L) 827#if ECB_CPP
610
611#if __cplusplus
612 #define ecb_inline static inline 828 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 829#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 830 #define ecb_inline static __inline__
615#elif ECB_C99 831#elif ECB_C99
616 #define ecb_inline static inline 832 #define ecb_inline static inline
… …
630 846
631#define ECB_CONCAT_(a, b) a ## b 847#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 848#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a 849#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 850#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
851#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
635 852
636#define ecb_function_ ecb_inline 853#define ecb_function_ ecb_inline
637 854
638#if ECB_GCC_VERSION(3,1) 855#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
639 #define ecb_attribute(attrlist) __attribute__(attrlist) 856 #define ecb_attribute(attrlist) __attribute__ (attrlist)
857#else
858 #define ecb_attribute(attrlist)
859#endif
860
861#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr) 862 #define ecb_is_constant(expr) __builtin_constant_p (expr)
863#else
864 /* possible C11 impl for integral types
865 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
866 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
867
868 #define ecb_is_constant(expr) 0
869#endif
870
871#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 872 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
873#else
874 #define ecb_expect(expr,value) (expr)
875#endif
876
877#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 878 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else 879#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality) 880 #define ecb_prefetch(addr,rw,locality)
648#endif 881#endif
649 882
650/* no emulation for ecb_decltype */ 883/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5) 884#if ECB_CPP11
885 // older implementations might have problems with decltype(x)::type, work around it
886 template<class T> struct ecb_decltype_t { typedef T type; };
652 #define ecb_decltype(x) __decltype(x) 887 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
653#elif ECB_GCC_VERSION(3,0) 888#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
654 #define ecb_decltype(x) __typeof(x) 889 #define ecb_decltype(x) __typeof__ (x)
655#endif 890#endif
656 891
892#if _MSC_VER >= 1300
893 #define ecb_deprecated __declspec (deprecated)
894#else
895 #define ecb_deprecated ecb_attribute ((__deprecated__))
896#endif
897
898#if _MSC_VER >= 1500
899 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
900#elif ECB_GCC_VERSION(4,5)
901 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
902#else
903 #define ecb_deprecated_message(msg) ecb_deprecated
904#endif
905
906#if _MSC_VER >= 1400
907 #define ecb_noinline __declspec (noinline)
908#else
657#define ecb_noinline ecb_attribute ((__noinline__)) 909 #define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__)) 910#endif
911
659#define ecb_unused ecb_attribute ((__unused__)) 912#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 913#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 914#define ecb_pure ecb_attribute ((__pure__))
915
916#if ECB_C11 || __IBMC_NORETURN
917 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
918 #define ecb_noreturn _Noreturn
919#elif ECB_CPP11
920 #define ecb_noreturn [[noreturn]]
921#elif _MSC_VER >= 1200
922 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
923 #define ecb_noreturn __declspec (noreturn)
924#else
925 #define ecb_noreturn ecb_attribute ((__noreturn__))
926#endif
662 927
663#if ECB_GCC_VERSION(4,3) 928#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 929 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 930 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 931 #define ecb_cold ecb_attribute ((__cold__))
… …
678/* for compatibility to the rest of the world */ 943/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr) 944#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr) 945#define ecb_unlikely(expr) ecb_expect_false (expr)
681 946
682/* count trailing zero bits and count # of one bits */ 947/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4) 948#if ECB_GCC_VERSION(3,4) \
949 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
950 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
951 && ECB_CLANG_BUILTIN(__builtin_popcount))
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 952 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 953 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 954 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x) 955 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x) 956 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x) 957 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */ 958 /* no popcountll */
691#else 959#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 960 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
693 ecb_function_ int 961 ecb_function_ ecb_const int
694 ecb_ctz32 (uint32_t x) 962 ecb_ctz32 (uint32_t x)
695 { 963 {
964#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
965 unsigned long r;
966 _BitScanForward (&r, x);
967 return (int)r;
968#else
696 int r = 0; 969 int r = 0;
697 970
698 x &= ~x + 1; /* this isolates the lowest bit */ 971 x &= ~x + 1; /* this isolates the lowest bit */
699 972
700#if ECB_branchless_on_i386 973#if ECB_branchless_on_i386
… …
710 if (x & 0xff00ff00) r += 8; 983 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16; 984 if (x & 0xffff0000) r += 16;
712#endif 985#endif
713 986
714 return r; 987 return r;
988#endif
715 } 989 }
716 990
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 991 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
718 ecb_function_ int 992 ecb_function_ ecb_const int
719 ecb_ctz64 (uint64_t x) 993 ecb_ctz64 (uint64_t x)
720 { 994 {
995#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
996 unsigned long r;
997 _BitScanForward64 (&r, x);
998 return (int)r;
999#else
721 int shift = x & 0xffffffffU ? 0 : 32; 1000 int shift = x & 0xffffffff ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift; 1001 return ecb_ctz32 (x >> shift) + shift;
1002#endif
723 } 1003 }
724 1004
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
726 ecb_function_ int 1006 ecb_function_ ecb_const int
727 ecb_popcount32 (uint32_t x) 1007 ecb_popcount32 (uint32_t x)
728 { 1008 {
729 x -= (x >> 1) & 0x55555555; 1009 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1010 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f; 1011 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101; 1012 x *= 0x01010101;
733 1013
734 return x >> 24; 1014 return x >> 24;
735 } 1015 }
736 1016
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1017 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
738 ecb_function_ int ecb_ld32 (uint32_t x) 1018 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
739 { 1019 {
1020#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1021 unsigned long r;
1022 _BitScanReverse (&r, x);
1023 return (int)r;
1024#else
740 int r = 0; 1025 int r = 0;
741 1026
742 if (x >> 16) { x >>= 16; r += 16; } 1027 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; } 1028 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; } 1029 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; } 1030 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; } 1031 if (x >> 1) { r += 1; }
747 1032
748 return r; 1033 return r;
1034#endif
749 } 1035 }
750 1036
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1037 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
752 ecb_function_ int ecb_ld64 (uint64_t x) 1038 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
753 { 1039 {
1040#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1041 unsigned long r;
1042 _BitScanReverse64 (&r, x);
1043 return (int)r;
1044#else
754 int r = 0; 1045 int r = 0;
755 1046
756 if (x >> 32) { x >>= 32; r += 32; } 1047 if (x >> 32) { x >>= 32; r += 32; }
757 1048
758 return r + ecb_ld32 (x); 1049 return r + ecb_ld32 (x);
1050#endif
759 } 1051 }
760#endif 1052#endif
1053
1054ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1055ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1056ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1057ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1058
1059ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1060ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1061{
1062 return ( (x * 0x0802U & 0x22110U)
1063 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1064}
1065
1066ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1067ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1068{
1069 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1070 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1071 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1072 x = ( x >> 8 ) | ( x << 8);
1073
1074 return x;
1075}
1076
1077ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1078ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1079{
1080 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1081 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1082 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1083 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1084 x = ( x >> 16 ) | ( x << 16);
1085
1086 return x;
1087}
761 1088
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1089/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 1090/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1091ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
765ecb_function_ int 1092ecb_function_ ecb_const int
766ecb_popcount64 (uint64_t x) 1093ecb_popcount64 (uint64_t x)
767{ 1094{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1095 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769} 1096}
770 1097
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1098ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1099ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1100ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1101ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1102ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1103ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1104ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1105ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
779 1106
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1107ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1108ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1109ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1110ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1111ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1112ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1113ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1114ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788 1115
789#if ECB_GCC_VERSION(4,3) 1116#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1117 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1118 #define ecb_bswap16(x) __builtin_bswap16 (x)
1119 #else
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1120 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1121 #endif
791 #define ecb_bswap32(x) __builtin_bswap32 (x) 1122 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x) 1123 #define ecb_bswap64(x) __builtin_bswap64 (x)
1124#elif _MSC_VER
1125 #include <stdlib.h>
1126 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1127 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1128 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
793#else 1129#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1130 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
795 ecb_function_ uint16_t 1131 ecb_function_ ecb_const uint16_t
796 ecb_bswap16 (uint16_t x) 1132 ecb_bswap16 (uint16_t x)
797 { 1133 {
798 return ecb_rotl16 (x, 8); 1134 return ecb_rotl16 (x, 8);
799 } 1135 }
800 1136
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1137 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
802 ecb_function_ uint32_t 1138 ecb_function_ ecb_const uint32_t
803 ecb_bswap32 (uint32_t x) 1139 ecb_bswap32 (uint32_t x)
804 { 1140 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1141 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 } 1142 }
807 1143
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1144 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
809 ecb_function_ uint64_t 1145 ecb_function_ ecb_const uint64_t
810 ecb_bswap64 (uint64_t x) 1146 ecb_bswap64 (uint64_t x)
811 { 1147 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1148 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 } 1149 }
814#endif 1150#endif
815 1151
816#if ECB_GCC_VERSION(4,5) 1152#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
817 #define ecb_unreachable() __builtin_unreachable () 1153 #define ecb_unreachable() __builtin_unreachable ()
818#else 1154#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1155 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1156 ecb_inline ecb_noreturn void ecb_unreachable (void);
821 ecb_function_ void ecb_unreachable (void) { } 1157 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
822#endif 1158#endif
823 1159
824/* try to tell the compiler that some condition is definitely true */ 1160/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1161#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 1162
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1163ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
828ecb_function_ unsigned char 1164ecb_inline ecb_const uint32_t
829ecb_byteorder_helper (void) 1165ecb_byteorder_helper (void)
830{ 1166{
831 const uint32_t u = 0x11223344; 1167 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 1168 /* but less than using pointers, and always seems to */
1169 /* successfully return a constant. */
1170 /* the reason why we have this horrible preprocessor mess */
1171 /* is to avoid it in all cases, at least on common architectures */
1172 /* or when using a recent enough gcc version (>= 4.6) */
1173#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1174 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1175 #define ECB_LITTLE_ENDIAN 1
1176 return 0x44332211;
1177#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1178 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1179 #define ECB_BIG_ENDIAN 1
1180 return 0x11223344;
1181#else
1182 union
1183 {
1184 uint8_t c[4];
1185 uint32_t u;
1186 } u = { 0x11, 0x22, 0x33, 0x44 };
1187 return u.u;
1188#endif
833} 1189}
834 1190
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1191ecb_inline ecb_const ecb_bool ecb_big_endian (void);
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1192ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1193ecb_inline ecb_const ecb_bool ecb_little_endian (void);
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1194ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
839 1195
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1196#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1197 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1198#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1199 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif 1200#endif
845 1201
846#if __cplusplus 1202#if ECB_CPP
847 template<typename T> 1203 template<typename T>
848 static inline T ecb_div_rd (T val, T div) 1204 static inline T ecb_div_rd (T val, T div)
849 { 1205 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1206 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 } 1207 }
… …
868 } 1224 }
869#else 1225#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1226 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1227#endif
872 1228
1229ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1230ecb_function_ ecb_const uint32_t
1231ecb_binary16_to_binary32 (uint32_t x)
1232{
1233 unsigned int s = (x & 0x8000) << (31 - 15);
1234 int e = (x >> 10) & 0x001f;
1235 unsigned int m = x & 0x03ff;
1236
1237 if (ecb_expect_false (e == 31))
1238 /* infinity or NaN */
1239 e = 255 - (127 - 15);
1240 else if (ecb_expect_false (!e))
1241 {
1242 if (ecb_expect_true (!m))
1243 /* zero, handled by code below by forcing e to 0 */
1244 e = 0 - (127 - 15);
1245 else
1246 {
1247 /* subnormal, renormalise */
1248 unsigned int s = 10 - ecb_ld32 (m);
1249
1250 m = (m << s) & 0x3ff; /* mask implicit bit */
1251 e -= s - 1;
1252 }
1253 }
1254
1255 /* e and m now are normalised, or zero, (or inf or nan) */
1256 e += 127 - 15;
1257
1258 return s | (e << 23) | (m << (23 - 10));
1259}
1260
1261ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1262ecb_function_ ecb_const uint16_t
1263ecb_binary32_to_binary16 (uint32_t x)
1264{
1265 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1266 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1267 unsigned int m = x & 0x007fffff;
1268
1269 x &= 0x7fffffff;
1270
1271 /* if it's within range of binary16 normals, use fast path */
1272 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1273 {
1274 /* mantissa round-to-even */
1275 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1276
1277 /* handle overflow */
1278 if (ecb_expect_false (m >= 0x00800000))
1279 {
1280 m >>= 1;
1281 e += 1;
1282 }
1283
1284 return s | (e << 10) | (m >> (23 - 10));
1285 }
1286
1287 /* handle large numbers and infinity */
1288 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1289 return s | 0x7c00;
1290
1291 /* handle zero, subnormals and small numbers */
1292 if (ecb_expect_true (x < 0x38800000))
1293 {
1294 /* zero */
1295 if (ecb_expect_true (!x))
1296 return s;
1297
1298 /* handle subnormals */
1299
1300 /* too small, will be zero */
1301 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1302 return s;
1303
1304 m |= 0x00800000; /* make implicit bit explicit */
1305
1306 /* very tricky - we need to round to the nearest e (+10) bit value */
1307 {
1308 unsigned int bits = 14 - e;
1309 unsigned int half = (1 << (bits - 1)) - 1;
1310 unsigned int even = (m >> bits) & 1;
1311
1312 /* if this overflows, we will end up with a normalised number */
1313 m = (m + half + even) >> bits;
1314 }
1315
1316 return s | m;
1317 }
1318
1319 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1320 m >>= 13;
1321
1322 return s | 0x7c00 | m | !m;
1323}
1324
1325/*******************************************************************************/
1326/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1327
1328/* basically, everything uses "ieee pure-endian" floating point numbers */
1329/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1330#if 0 \
1331 || __i386 || __i386__ \
1332 || ECB_GCC_AMD64 \
1333 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1334 || defined __s390__ || defined __s390x__ \
1335 || defined __mips__ \
1336 || defined __alpha__ \
1337 || defined __hppa__ \
1338 || defined __ia64__ \
1339 || defined __m68k__ \
1340 || defined __m88k__ \
1341 || defined __sh__ \
1342 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1343 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1344 || defined __aarch64__
1345 #define ECB_STDFP 1
1346 #include <string.h> /* for memcpy */
1347#else
1348 #define ECB_STDFP 0
1349#endif
1350
1351#ifndef ECB_NO_LIBM
1352
1353 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1354
1355 /* only the oldest of old doesn't have this one. solaris. */
1356 #ifdef INFINITY
1357 #define ECB_INFINITY INFINITY
1358 #else
1359 #define ECB_INFINITY HUGE_VAL
1360 #endif
1361
1362 #ifdef NAN
1363 #define ECB_NAN NAN
1364 #else
1365 #define ECB_NAN ECB_INFINITY
1366 #endif
1367
1368 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1369 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1370 #define ecb_frexpf(x,e) frexpf ((x), (e))
1371 #else
1372 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1373 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1374 #endif
1375
1376 /* convert a float to ieee single/binary32 */
1377 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1378 ecb_function_ ecb_const uint32_t
1379 ecb_float_to_binary32 (float x)
1380 {
1381 uint32_t r;
1382
1383 #if ECB_STDFP
1384 memcpy (&r, &x, 4);
1385 #else
1386 /* slow emulation, works for anything but -0 */
1387 uint32_t m;
1388 int e;
1389
1390 if (x == 0e0f ) return 0x00000000U;
1391 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1392 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1393 if (x != x ) return 0x7fbfffffU;
1394
1395 m = ecb_frexpf (x, &e) * 0x1000000U;
1396
1397 r = m & 0x80000000U;
1398
1399 if (r)
1400 m = -m;
1401
1402 if (e <= -126)
1403 {
1404 m &= 0xffffffU;
1405 m >>= (-125 - e);
1406 e = -126;
1407 }
1408
1409 r |= (e + 126) << 23;
1410 r |= m & 0x7fffffU;
1411 #endif
1412
1413 return r;
1414 }
1415
1416 /* converts an ieee single/binary32 to a float */
1417 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1418 ecb_function_ ecb_const float
1419 ecb_binary32_to_float (uint32_t x)
1420 {
1421 float r;
1422
1423 #if ECB_STDFP
1424 memcpy (&r, &x, 4);
1425 #else
1426 /* emulation, only works for normals and subnormals and +0 */
1427 int neg = x >> 31;
1428 int e = (x >> 23) & 0xffU;
1429
1430 x &= 0x7fffffU;
1431
1432 if (e)
1433 x |= 0x800000U;
1434 else
1435 e = 1;
1436
1437 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1438 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1439
1440 r = neg ? -r : r;
1441 #endif
1442
1443 return r;
1444 }
1445
1446 /* convert a double to ieee double/binary64 */
1447 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1448 ecb_function_ ecb_const uint64_t
1449 ecb_double_to_binary64 (double x)
1450 {
1451 uint64_t r;
1452
1453 #if ECB_STDFP
1454 memcpy (&r, &x, 8);
1455 #else
1456 /* slow emulation, works for anything but -0 */
1457 uint64_t m;
1458 int e;
1459
1460 if (x == 0e0 ) return 0x0000000000000000U;
1461 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1462 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1463 if (x != x ) return 0X7ff7ffffffffffffU;
1464
1465 m = frexp (x, &e) * 0x20000000000000U;
1466
1467 r = m & 0x8000000000000000;;
1468
1469 if (r)
1470 m = -m;
1471
1472 if (e <= -1022)
1473 {
1474 m &= 0x1fffffffffffffU;
1475 m >>= (-1021 - e);
1476 e = -1022;
1477 }
1478
1479 r |= ((uint64_t)(e + 1022)) << 52;
1480 r |= m & 0xfffffffffffffU;
1481 #endif
1482
1483 return r;
1484 }
1485
1486 /* converts an ieee double/binary64 to a double */
1487 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1488 ecb_function_ ecb_const double
1489 ecb_binary64_to_double (uint64_t x)
1490 {
1491 double r;
1492
1493 #if ECB_STDFP
1494 memcpy (&r, &x, 8);
1495 #else
1496 /* emulation, only works for normals and subnormals and +0 */
1497 int neg = x >> 63;
1498 int e = (x >> 52) & 0x7ffU;
1499
1500 x &= 0xfffffffffffffU;
1501
1502 if (e)
1503 x |= 0x10000000000000U;
1504 else
1505 e = 1;
1506
1507 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1508 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1509
1510 r = neg ? -r : r;
1511 #endif
1512
1513 return r;
1514 }
1515
1516 /* convert a float to ieee half/binary16 */
1517 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1518 ecb_function_ ecb_const uint16_t
1519 ecb_float_to_binary16 (float x)
1520 {
1521 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1522 }
1523
1524 /* convert an ieee half/binary16 to float */
1525 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1526 ecb_function_ ecb_const float
1527 ecb_binary16_to_float (uint16_t x)
1528 {
1529 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1530 }
1531
1532#endif
1533
873#endif 1534#endif
874 1535
875/* ECB.H END */ 1536/* ECB.H END */
876 1537
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1538#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1539/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1540 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1541 * from multiple threads, then you can define ECB_NO_THREADS when compiling
881 * libev, in which casess the memory fences become nops. 1542 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1543 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1544 * which will then provide the memory fences.
884 */ 1545 */
885# error "memory fences not defined for your architecture, please report" 1546# error "memory fences not defined for your architecture, please report"
886#endif 1547#endif
… …
889# define ECB_MEMORY_FENCE do { } while (0) 1550# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1551# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1552# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif 1553#endif
893 1554
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
898#define inline_size ecb_inline 1555#define inline_size ecb_inline
899 1556
900#if EV_FEATURE_CODE 1557#if EV_FEATURE_CODE
901# define inline_speed ecb_inline 1558# define inline_speed ecb_inline
902#else 1559#else
903# define inline_speed static noinline 1560# define inline_speed ecb_noinline static
904#endif 1561#endif
905 1562
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1563#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907 1564
908#if EV_MINPRI == EV_MAXPRI 1565#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0) 1566# define ABSPRI(w) (((W)w), 0)
910#else 1567#else
911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1568# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif 1569#endif
913 1570
914#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1571#define EMPTY /* required for microsofts broken pseudo-c compiler */
915#define EMPTY2(a,b) /* used to suppress some warnings */
916 1572
917typedef ev_watcher *W; 1573typedef ev_watcher *W;
918typedef ev_watcher_list *WL; 1574typedef ev_watcher_list *WL;
919typedef ev_watcher_time *WT; 1575typedef ev_watcher_time *WT;
920 1576
… …
945# include "ev_win32.c" 1601# include "ev_win32.c"
946#endif 1602#endif
947 1603
948/*****************************************************************************/ 1604/*****************************************************************************/
949 1605
1606#if EV_USE_LINUXAIO
1607# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1608#endif
1609
950/* define a suitable floor function (only used by periodics atm) */ 1610/* define a suitable floor function (only used by periodics atm) */
951 1611
952#if EV_USE_FLOOR 1612#if EV_USE_FLOOR
953# include <math.h> 1613# include <math.h>
954# define ev_floor(v) floor (v) 1614# define ev_floor(v) floor (v)
955#else 1615#else
956 1616
957#include <float.h> 1617#include <float.h>
958 1618
959/* a floor() replacement function, should be independent of ev_tstamp type */ 1619/* a floor() replacement function, should be independent of ev_tstamp type */
1620ecb_noinline
960static ev_tstamp noinline 1621static ev_tstamp
961ev_floor (ev_tstamp v) 1622ev_floor (ev_tstamp v)
962{ 1623{
963 /* the choice of shift factor is not terribly important */ 1624 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1625#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1626 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else 1627#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1628 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif 1629#endif
969 1630
970 /* argument too large for an unsigned long? */ 1631 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift)) 1632 if (ecb_expect_false (v >= shift))
972 { 1633 {
973 ev_tstamp f; 1634 ev_tstamp f;
974 1635
975 if (v == v - 1.) 1636 if (v == v - 1.)
976 return v; /* very large number */ 1637 return v; /* very large number */
… …
978 f = shift * ev_floor (v * (1. / shift)); 1639 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f); 1640 return f + ev_floor (v - f);
980 } 1641 }
981 1642
982 /* special treatment for negative args? */ 1643 /* special treatment for negative args? */
983 if (expect_false (v < 0.)) 1644 if (ecb_expect_false (v < 0.))
984 { 1645 {
985 ev_tstamp f = -ev_floor (-v); 1646 ev_tstamp f = -ev_floor (-v);
986 1647
987 return f - (f == v ? 0 : 1); 1648 return f - (f == v ? 0 : 1);
988 } 1649 }
… …
997 1658
998#ifdef __linux 1659#ifdef __linux
999# include <sys/utsname.h> 1660# include <sys/utsname.h>
1000#endif 1661#endif
1001 1662
1002static unsigned int noinline ecb_cold 1663ecb_noinline ecb_cold
1664static unsigned int
1003ev_linux_version (void) 1665ev_linux_version (void)
1004{ 1666{
1005#ifdef __linux 1667#ifdef __linux
1006 unsigned int v = 0; 1668 unsigned int v = 0;
1007 struct utsname buf; 1669 struct utsname buf;
… …
1036} 1698}
1037 1699
1038/*****************************************************************************/ 1700/*****************************************************************************/
1039 1701
1040#if EV_AVOID_STDIO 1702#if EV_AVOID_STDIO
1041static void noinline ecb_cold 1703ecb_noinline ecb_cold
1704static void
1042ev_printerr (const char *msg) 1705ev_printerr (const char *msg)
1043{ 1706{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1707 write (STDERR_FILENO, msg, strlen (msg));
1045} 1708}
1046#endif 1709#endif
1047 1710
1048static void (*syserr_cb)(const char *msg); 1711static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1049 1712
1050void ecb_cold 1713ecb_cold
1714void
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1715ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1052{ 1716{
1053 syserr_cb = cb; 1717 syserr_cb = cb;
1054} 1718}
1055 1719
1056static void noinline ecb_cold 1720ecb_noinline ecb_cold
1721static void
1057ev_syserr (const char *msg) 1722ev_syserr (const char *msg)
1058{ 1723{
1059 if (!msg) 1724 if (!msg)
1060 msg = "(libev) system error"; 1725 msg = "(libev) system error";
1061 1726
… …
1074 abort (); 1739 abort ();
1075 } 1740 }
1076} 1741}
1077 1742
1078static void * 1743static void *
1079ev_realloc_emul (void *ptr, long size) 1744ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1080{ 1745{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1746 /* some systems, notably openbsd and darwin, fail to properly
1085 * implement realloc (x, 0) (as required by both ansi c-89 and 1747 * implement realloc (x, 0) (as required by both ansi c-89 and
1086 * the single unix specification, so work around them here. 1748 * the single unix specification, so work around them here.
1749 * recently, also (at least) fedora and debian started breaking it,
1750 * despite documenting it otherwise.
1087 */ 1751 */
1088 1752
1089 if (size) 1753 if (size)
1090 return realloc (ptr, size); 1754 return realloc (ptr, size);
1091 1755
1092 free (ptr); 1756 free (ptr);
1093 return 0; 1757 return 0;
1094#endif
1095} 1758}
1096 1759
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1760static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1098 1761
1099void ecb_cold 1762ecb_cold
1763void
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1764ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1101{ 1765{
1102 alloc = cb; 1766 alloc = cb;
1103} 1767}
1104 1768
1105inline_speed void * 1769inline_speed void *
… …
1132typedef struct 1796typedef struct
1133{ 1797{
1134 WL head; 1798 WL head;
1135 unsigned char events; /* the events watched for */ 1799 unsigned char events; /* the events watched for */
1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1800 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1801 unsigned char emask; /* some backends store the actual kernel mask in here */
1138 unsigned char unused; 1802 unsigned char unused;
1139#if EV_USE_EPOLL 1803#if EV_USE_EPOLL
1140 unsigned int egen; /* generation counter to counter epoll bugs */ 1804 unsigned int egen; /* generation counter to counter epoll bugs */
1141#endif 1805#endif
1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1806#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
… …
1193 #undef VAR 1857 #undef VAR
1194 }; 1858 };
1195 #include "ev_wrap.h" 1859 #include "ev_wrap.h"
1196 1860
1197 static struct ev_loop default_loop_struct; 1861 static struct ev_loop default_loop_struct;
1198 struct ev_loop *ev_default_loop_ptr; 1862 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1199 1863
1200#else 1864#else
1201 1865
1202 ev_tstamp ev_rt_now; 1866 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1203 #define VAR(name,decl) static decl; 1867 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1868 #include "ev_vars.h"
1205 #undef VAR 1869 #undef VAR
1206 1870
1207 static int ev_default_loop_ptr; 1871 static int ev_default_loop_ptr;
1208 1872
1209#endif 1873#endif
1210 1874
1211#if EV_FEATURE_API 1875#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1876# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1877# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A) 1878# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else 1879#else
1216# define EV_RELEASE_CB (void)0 1880# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0 1881# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1882# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1222 1886
1223/*****************************************************************************/ 1887/*****************************************************************************/
1224 1888
1225#ifndef EV_HAVE_EV_TIME 1889#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1890ev_tstamp
1227ev_time (void) 1891ev_time (void) EV_NOEXCEPT
1228{ 1892{
1229#if EV_USE_REALTIME 1893#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1894 if (ecb_expect_true (have_realtime))
1231 { 1895 {
1232 struct timespec ts; 1896 struct timespec ts;
1233 clock_gettime (CLOCK_REALTIME, &ts); 1897 clock_gettime (CLOCK_REALTIME, &ts);
1234 return ts.tv_sec + ts.tv_nsec * 1e-9; 1898 return ts.tv_sec + ts.tv_nsec * 1e-9;
1235 } 1899 }
… …
1243 1907
1244inline_size ev_tstamp 1908inline_size ev_tstamp
1245get_clock (void) 1909get_clock (void)
1246{ 1910{
1247#if EV_USE_MONOTONIC 1911#if EV_USE_MONOTONIC
1248 if (expect_true (have_monotonic)) 1912 if (ecb_expect_true (have_monotonic))
1249 { 1913 {
1250 struct timespec ts; 1914 struct timespec ts;
1251 clock_gettime (CLOCK_MONOTONIC, &ts); 1915 clock_gettime (CLOCK_MONOTONIC, &ts);
1252 return ts.tv_sec + ts.tv_nsec * 1e-9; 1916 return ts.tv_sec + ts.tv_nsec * 1e-9;
1253 } 1917 }
… …
1256 return ev_time (); 1920 return ev_time ();
1257} 1921}
1258 1922
1259#if EV_MULTIPLICITY 1923#if EV_MULTIPLICITY
1260ev_tstamp 1924ev_tstamp
1261ev_now (EV_P) 1925ev_now (EV_P) EV_NOEXCEPT
1262{ 1926{
1263 return ev_rt_now; 1927 return ev_rt_now;
1264} 1928}
1265#endif 1929#endif
1266 1930
1267void 1931void
1268ev_sleep (ev_tstamp delay) 1932ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1269{ 1933{
1270 if (delay > 0.) 1934 if (delay > 0.)
1271 { 1935 {
1272#if EV_USE_NANOSLEEP 1936#if EV_USE_NANOSLEEP
1273 struct timespec ts; 1937 struct timespec ts;
1274 1938
1275 EV_TS_SET (ts, delay); 1939 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 1940 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 1941#elif defined _WIN32
1942 /* maybe this should round up, as ms is very low resolution */
1943 /* compared to select (µs) or nanosleep (ns) */
1278 Sleep ((unsigned long)(delay * 1e3)); 1944 Sleep ((unsigned long)(delay * 1e3));
1279#else 1945#else
1280 struct timeval tv; 1946 struct timeval tv;
1281 1947
1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1948 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1313 } 1979 }
1314 1980
1315 return ncur; 1981 return ncur;
1316} 1982}
1317 1983
1318static void * noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void *
1319array_realloc (int elem, void *base, int *cur, int cnt) 1986array_realloc (int elem, void *base, int *cur, int cnt)
1320{ 1987{
1321 *cur = array_nextsize (elem, *cur, cnt); 1988 *cur = array_nextsize (elem, *cur, cnt);
1322 return ev_realloc (base, elem * *cur); 1989 return ev_realloc (base, elem * *cur);
1323} 1990}
1324 1991
1992#define array_needsize_noinit(base,offset,count)
1993
1325#define array_init_zero(base,count) \ 1994#define array_needsize_zerofill(base,offset,count) \
1326 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1995 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1327 1996
1328#define array_needsize(type,base,cur,cnt,init) \ 1997#define array_needsize(type,base,cur,cnt,init) \
1329 if (expect_false ((cnt) > (cur))) \ 1998 if (ecb_expect_false ((cnt) > (cur))) \
1330 { \ 1999 { \
1331 int ecb_unused ocur_ = (cur); \ 2000 ecb_unused int ocur_ = (cur); \
1332 (base) = (type *)array_realloc \ 2001 (base) = (type *)array_realloc \
1333 (sizeof (type), (base), &(cur), (cnt)); \ 2002 (sizeof (type), (base), &(cur), (cnt)); \
1334 init ((base) + (ocur_), (cur) - ocur_); \ 2003 init ((base), ocur_, ((cur) - ocur_)); \
1335 } 2004 }
1336 2005
1337#if 0 2006#if 0
1338#define array_slim(type,stem) \ 2007#define array_slim(type,stem) \
1339 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2008 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2017 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1349 2018
1350/*****************************************************************************/ 2019/*****************************************************************************/
1351 2020
1352/* dummy callback for pending events */ 2021/* dummy callback for pending events */
1353static void noinline 2022ecb_noinline
2023static void
1354pendingcb (EV_P_ ev_prepare *w, int revents) 2024pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 2025{
1356} 2026}
1357 2027
1358void noinline 2028ecb_noinline
2029void
1359ev_feed_event (EV_P_ void *w, int revents) 2030ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1360{ 2031{
1361 W w_ = (W)w; 2032 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 2033 int pri = ABSPRI (w_);
1363 2034
1364 if (expect_false (w_->pending)) 2035 if (ecb_expect_false (w_->pending))
1365 pendings [pri][w_->pending - 1].events |= revents; 2036 pendings [pri][w_->pending - 1].events |= revents;
1366 else 2037 else
1367 { 2038 {
1368 w_->pending = ++pendingcnt [pri]; 2039 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2040 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1370 pendings [pri][w_->pending - 1].w = w_; 2041 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 2042 pendings [pri][w_->pending - 1].events = revents;
1372 } 2043 }
2044
2045 pendingpri = NUMPRI - 1;
1373} 2046}
1374 2047
1375inline_speed void 2048inline_speed void
1376feed_reverse (EV_P_ W w) 2049feed_reverse (EV_P_ W w)
1377{ 2050{
1378 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1379 rfeeds [rfeedcnt++] = w; 2052 rfeeds [rfeedcnt++] = w;
1380} 2053}
1381 2054
1382inline_size void 2055inline_size void
1383feed_reverse_done (EV_P_ int revents) 2056feed_reverse_done (EV_P_ int revents)
… …
1418inline_speed void 2091inline_speed void
1419fd_event (EV_P_ int fd, int revents) 2092fd_event (EV_P_ int fd, int revents)
1420{ 2093{
1421 ANFD *anfd = anfds + fd; 2094 ANFD *anfd = anfds + fd;
1422 2095
1423 if (expect_true (!anfd->reify)) 2096 if (ecb_expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 2097 fd_event_nocheck (EV_A_ fd, revents);
1425} 2098}
1426 2099
1427void 2100void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 2101ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1429{ 2102{
1430 if (fd >= 0 && fd < anfdmax) 2103 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 2104 fd_event_nocheck (EV_A_ fd, revents);
1432} 2105}
1433 2106
… …
1470 ev_io *w; 2143 ev_io *w;
1471 2144
1472 unsigned char o_events = anfd->events; 2145 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify; 2146 unsigned char o_reify = anfd->reify;
1474 2147
1475 anfd->reify = 0; 2148 anfd->reify = 0;
1476 2149
1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2150 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1478 { 2151 {
1479 anfd->events = 0; 2152 anfd->events = 0;
1480 2153
1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1482 anfd->events |= (unsigned char)w->events; 2155 anfd->events |= (unsigned char)w->events;
… …
1491 2164
1492 fdchangecnt = 0; 2165 fdchangecnt = 0;
1493} 2166}
1494 2167
1495/* something about the given fd changed */ 2168/* something about the given fd changed */
1496inline_size void 2169inline_size
2170void
1497fd_change (EV_P_ int fd, int flags) 2171fd_change (EV_P_ int fd, int flags)
1498{ 2172{
1499 unsigned char reify = anfds [fd].reify; 2173 unsigned char reify = anfds [fd].reify;
1500 anfds [fd].reify |= flags; 2174 anfds [fd].reify |= flags;
1501 2175
1502 if (expect_true (!reify)) 2176 if (ecb_expect_true (!reify))
1503 { 2177 {
1504 ++fdchangecnt; 2178 ++fdchangecnt;
1505 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2179 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1506 fdchanges [fdchangecnt - 1] = fd; 2180 fdchanges [fdchangecnt - 1] = fd;
1507 } 2181 }
1508} 2182}
1509 2183
1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2184/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1511inline_speed void ecb_cold 2185inline_speed ecb_cold void
1512fd_kill (EV_P_ int fd) 2186fd_kill (EV_P_ int fd)
1513{ 2187{
1514 ev_io *w; 2188 ev_io *w;
1515 2189
1516 while ((w = (ev_io *)anfds [fd].head)) 2190 while ((w = (ev_io *)anfds [fd].head))
… …
1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2193 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1520 } 2194 }
1521} 2195}
1522 2196
1523/* check whether the given fd is actually valid, for error recovery */ 2197/* check whether the given fd is actually valid, for error recovery */
1524inline_size int ecb_cold 2198inline_size ecb_cold int
1525fd_valid (int fd) 2199fd_valid (int fd)
1526{ 2200{
1527#ifdef _WIN32 2201#ifdef _WIN32
1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2202 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1529#else 2203#else
1530 return fcntl (fd, F_GETFD) != -1; 2204 return fcntl (fd, F_GETFD) != -1;
1531#endif 2205#endif
1532} 2206}
1533 2207
1534/* called on EBADF to verify fds */ 2208/* called on EBADF to verify fds */
1535static void noinline ecb_cold 2209ecb_noinline ecb_cold
2210static void
1536fd_ebadf (EV_P) 2211fd_ebadf (EV_P)
1537{ 2212{
1538 int fd; 2213 int fd;
1539 2214
1540 for (fd = 0; fd < anfdmax; ++fd) 2215 for (fd = 0; fd < anfdmax; ++fd)
… …
1542 if (!fd_valid (fd) && errno == EBADF) 2217 if (!fd_valid (fd) && errno == EBADF)
1543 fd_kill (EV_A_ fd); 2218 fd_kill (EV_A_ fd);
1544} 2219}
1545 2220
1546/* called on ENOMEM in select/poll to kill some fds and retry */ 2221/* called on ENOMEM in select/poll to kill some fds and retry */
1547static void noinline ecb_cold 2222ecb_noinline ecb_cold
2223static void
1548fd_enomem (EV_P) 2224fd_enomem (EV_P)
1549{ 2225{
1550 int fd; 2226 int fd;
1551 2227
1552 for (fd = anfdmax; fd--; ) 2228 for (fd = anfdmax; fd--; )
… …
1556 break; 2232 break;
1557 } 2233 }
1558} 2234}
1559 2235
1560/* usually called after fork if backend needs to re-arm all fds from scratch */ 2236/* usually called after fork if backend needs to re-arm all fds from scratch */
1561static void noinline 2237ecb_noinline
2238static void
1562fd_rearm_all (EV_P) 2239fd_rearm_all (EV_P)
1563{ 2240{
1564 int fd; 2241 int fd;
1565 2242
1566 for (fd = 0; fd < anfdmax; ++fd) 2243 for (fd = 0; fd < anfdmax; ++fd)
… …
1619 ev_tstamp minat; 2296 ev_tstamp minat;
1620 ANHE *minpos; 2297 ANHE *minpos;
1621 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1622 2299
1623 /* find minimum child */ 2300 /* find minimum child */
1624 if (expect_true (pos + DHEAP - 1 < E)) 2301 if (ecb_expect_true (pos + DHEAP - 1 < E))
1625 { 2302 {
1626 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1627 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1628 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1629 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
… …
1747 2424
1748/*****************************************************************************/ 2425/*****************************************************************************/
1749 2426
1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1751 2428
1752static void noinline ecb_cold 2429ecb_noinline ecb_cold
2430static void
1753evpipe_init (EV_P) 2431evpipe_init (EV_P)
1754{ 2432{
1755 if (!ev_is_active (&pipe_w)) 2433 if (!ev_is_active (&pipe_w))
1756 { 2434 {
2435 int fds [2];
2436
1757# if EV_USE_EVENTFD 2437# if EV_USE_EVENTFD
2438 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2439 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2440 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2441 fds [1] = eventfd (0, 0);
1761 2442
1762 if (evfd >= 0) 2443 if (fds [1] < 0)
2444# endif
1763 { 2445 {
2446 while (pipe (fds))
2447 ev_syserr ("(libev) error creating signal/async pipe");
2448
2449 fd_intern (fds [0]);
2450 }
2451
1764 evpipe [0] = -1; 2452 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2453
1766 ev_io_set (&pipe_w, evfd, EV_READ); 2454 if (evpipe [1] < 0)
2455 evpipe [1] = fds [1]; /* first call, set write fd */
2456 else
2457 {
2458 /* on subsequent calls, do not change evpipe [1] */
2459 /* so that evpipe_write can always rely on its value. */
2460 /* this branch does not do anything sensible on windows, */
2461 /* so must not be executed on windows */
2462
2463 dup2 (fds [1], evpipe [1]);
2464 close (fds [1]);
2465 }
2466
2467 fd_intern (evpipe [1]);
2468
2469 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2470 ev_io_start (EV_A_ &pipe_w);
2471 ev_unref (EV_A); /* watcher should not keep loop alive */
2472 }
2473}
2474
2475inline_speed void
2476evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2477{
2478 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2479
2480 if (ecb_expect_true (*flag))
2481 return;
2482
2483 *flag = 1;
2484 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2485
2486 pipe_write_skipped = 1;
2487
2488 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2489
2490 if (pipe_write_wanted)
2491 {
2492 int old_errno;
2493
2494 pipe_write_skipped = 0;
2495 ECB_MEMORY_FENCE_RELEASE;
2496
2497 old_errno = errno; /* save errno because write will clobber it */
2498
2499#if EV_USE_EVENTFD
2500 if (evpipe [0] < 0)
2501 {
2502 uint64_t counter = 1;
2503 write (evpipe [1], &counter, sizeof (uint64_t));
1767 } 2504 }
1768 else 2505 else
1769# endif 2506#endif
1770 { 2507 {
1771 while (pipe (evpipe)) 2508#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2509 WSABUF buf;
1773 2510 DWORD sent;
1774 fd_intern (evpipe [0]); 2511 buf.buf = (char *)&buf;
1775 fd_intern (evpipe [1]); 2512 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2513 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2514#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2515 write (evpipe [1], &(evpipe [1]), 1);
2516#endif
1821 } 2517 }
1822 2518
1823 errno = old_errno; 2519 errno = old_errno;
1824 } 2520 }
1825} 2521}
… …
1832 int i; 2528 int i;
1833 2529
1834 if (revents & EV_READ) 2530 if (revents & EV_READ)
1835 { 2531 {
1836#if EV_USE_EVENTFD 2532#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2533 if (evpipe [0] < 0)
1838 { 2534 {
1839 uint64_t counter; 2535 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2536 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2537 }
1842 else 2538 else
1843#endif 2539#endif
1844 { 2540 {
1845 char dummy; 2541 char dummy[4];
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2542#ifdef _WIN32
2543 WSABUF buf;
2544 DWORD recvd;
2545 DWORD flags = 0;
2546 buf.buf = dummy;
2547 buf.len = sizeof (dummy);
2548 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2549#else
1847 read (evpipe [0], &dummy, 1); 2550 read (evpipe [0], &dummy, sizeof (dummy));
2551#endif
1848 } 2552 }
1849 } 2553 }
1850 2554
1851 pipe_write_skipped = 0; 2555 pipe_write_skipped = 0;
2556
2557 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2558
1853#if EV_SIGNAL_ENABLE 2559#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2560 if (sig_pending)
1855 { 2561 {
1856 sig_pending = 0; 2562 sig_pending = 0;
1857 2563
2564 ECB_MEMORY_FENCE;
2565
1858 for (i = EV_NSIG - 1; i--; ) 2566 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2567 if (ecb_expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2568 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2569 }
1862#endif 2570#endif
1863 2571
1864#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1865 if (async_pending) 2573 if (async_pending)
1866 { 2574 {
1867 async_pending = 0; 2575 async_pending = 0;
2576
2577 ECB_MEMORY_FENCE;
1868 2578
1869 for (i = asynccnt; i--; ) 2579 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2580 if (asyncs [i]->sent)
1871 { 2581 {
1872 asyncs [i]->sent = 0; 2582 asyncs [i]->sent = 0;
2583 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2584 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2585 }
1875 } 2586 }
1876#endif 2587#endif
1877} 2588}
1878 2589
1879/*****************************************************************************/ 2590/*****************************************************************************/
1880 2591
1881void 2592void
1882ev_feed_signal (int signum) 2593ev_feed_signal (int signum) EV_NOEXCEPT
1883{ 2594{
1884#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
2596 EV_P;
2597 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2598 EV_A = signals [signum - 1].loop;
1886 2599
1887 if (!EV_A) 2600 if (!EV_A)
1888 return; 2601 return;
1889#endif 2602#endif
1890 2603
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2604 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2605 evpipe_write (EV_A_ &sig_pending);
1896} 2606}
1897 2607
1898static void 2608static void
… …
1903#endif 2613#endif
1904 2614
1905 ev_feed_signal (signum); 2615 ev_feed_signal (signum);
1906} 2616}
1907 2617
1908void noinline 2618ecb_noinline
2619void
1909ev_feed_signal_event (EV_P_ int signum) 2620ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1910{ 2621{
1911 WL w; 2622 WL w;
1912 2623
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2624 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2625 return;
1915 2626
1916 --signum; 2627 --signum;
1917 2628
1918#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
1919 /* it is permissible to try to feed a signal to the wrong loop */ 2630 /* it is permissible to try to feed a signal to the wrong loop */
1920 /* or, likely more useful, feeding a signal nobody is waiting for */ 2631 /* or, likely more useful, feeding a signal nobody is waiting for */
1921 2632
1922 if (expect_false (signals [signum].loop != EV_A)) 2633 if (ecb_expect_false (signals [signum].loop != EV_A))
1923 return; 2634 return;
1924#endif 2635#endif
1925 2636
1926 signals [signum].pending = 0; 2637 signals [signum].pending = 0;
2638 ECB_MEMORY_FENCE_RELEASE;
1927 2639
1928 for (w = signals [signum].head; w; w = w->next) 2640 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2641 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2642}
1931 2643
… …
2022# include "ev_kqueue.c" 2734# include "ev_kqueue.c"
2023#endif 2735#endif
2024#if EV_USE_EPOLL 2736#if EV_USE_EPOLL
2025# include "ev_epoll.c" 2737# include "ev_epoll.c"
2026#endif 2738#endif
2739#if EV_USE_LINUXAIO
2740# include "ev_linuxaio.c"
2741#endif
2027#if EV_USE_POLL 2742#if EV_USE_POLL
2028# include "ev_poll.c" 2743# include "ev_poll.c"
2029#endif 2744#endif
2030#if EV_USE_SELECT 2745#if EV_USE_SELECT
2031# include "ev_select.c" 2746# include "ev_select.c"
2032#endif 2747#endif
2033 2748
2034int ecb_cold 2749ecb_cold int
2035ev_version_major (void) 2750ev_version_major (void) EV_NOEXCEPT
2036{ 2751{
2037 return EV_VERSION_MAJOR; 2752 return EV_VERSION_MAJOR;
2038} 2753}
2039 2754
2040int ecb_cold 2755ecb_cold int
2041ev_version_minor (void) 2756ev_version_minor (void) EV_NOEXCEPT
2042{ 2757{
2043 return EV_VERSION_MINOR; 2758 return EV_VERSION_MINOR;
2044} 2759}
2045 2760
2046/* return true if we are running with elevated privileges and should ignore env variables */ 2761/* return true if we are running with elevated privileges and should ignore env variables */
2047int inline_size ecb_cold 2762inline_size ecb_cold int
2048enable_secure (void) 2763enable_secure (void)
2049{ 2764{
2050#ifdef _WIN32 2765#ifdef _WIN32
2051 return 0; 2766 return 0;
2052#else 2767#else
2053 return getuid () != geteuid () 2768 return getuid () != geteuid ()
2054 || getgid () != getegid (); 2769 || getgid () != getegid ();
2055#endif 2770#endif
2056} 2771}
2057 2772
2058unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2059ev_supported_backends (void) 2775ev_supported_backends (void) EV_NOEXCEPT
2060{ 2776{
2061 unsigned int flags = 0; 2777 unsigned int flags = 0;
2062 2778
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2779 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2780 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2065 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2781 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2782 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2066 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2783 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2784 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2068 2785
2069 return flags; 2786 return flags;
2070} 2787}
2071 2788
2072unsigned int ecb_cold 2789ecb_cold
2790unsigned int
2073ev_recommended_backends (void) 2791ev_recommended_backends (void) EV_NOEXCEPT
2074{ 2792{
2075 unsigned int flags = ev_supported_backends (); 2793 unsigned int flags = ev_supported_backends ();
2076 2794
2077#ifndef __NetBSD__ 2795#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2796 /* kqueue is borked on everything but netbsd apparently */
… …
2086#endif 2804#endif
2087#ifdef __FreeBSD__ 2805#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 2806 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif 2807#endif
2090 2808
2809 /* TODO: linuxaio is very experimental */
2810#if !EV_RECOMMEND_LINUXAIO
2811 flags &= ~EVBACKEND_LINUXAIO;
2812#endif
2813
2091 return flags; 2814 return flags;
2092} 2815}
2093 2816
2094unsigned int ecb_cold 2817ecb_cold
2818unsigned int
2095ev_embeddable_backends (void) 2819ev_embeddable_backends (void) EV_NOEXCEPT
2096{ 2820{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2821 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2822
2099 /* 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 */
2100 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 */
… …
2102 2826
2103 return flags; 2827 return flags;
2104} 2828}
2105 2829
2106unsigned int 2830unsigned int
2107ev_backend (EV_P) 2831ev_backend (EV_P) EV_NOEXCEPT
2108{ 2832{
2109 return backend; 2833 return backend;
2110} 2834}
2111 2835
2112#if EV_FEATURE_API 2836#if EV_FEATURE_API
2113unsigned int 2837unsigned int
2114ev_iteration (EV_P) 2838ev_iteration (EV_P) EV_NOEXCEPT
2115{ 2839{
2116 return loop_count; 2840 return loop_count;
2117} 2841}
2118 2842
2119unsigned int 2843unsigned int
2120ev_depth (EV_P) 2844ev_depth (EV_P) EV_NOEXCEPT
2121{ 2845{
2122 return loop_depth; 2846 return loop_depth;
2123} 2847}
2124 2848
2125void 2849void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2850ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2127{ 2851{
2128 io_blocktime = interval; 2852 io_blocktime = interval;
2129} 2853}
2130 2854
2131void 2855void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2856ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2133{ 2857{
2134 timeout_blocktime = interval; 2858 timeout_blocktime = interval;
2135} 2859}
2136 2860
2137void 2861void
2138ev_set_userdata (EV_P_ void *data) 2862ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2139{ 2863{
2140 userdata = data; 2864 userdata = data;
2141} 2865}
2142 2866
2143void * 2867void *
2144ev_userdata (EV_P) 2868ev_userdata (EV_P) EV_NOEXCEPT
2145{ 2869{
2146 return userdata; 2870 return userdata;
2147} 2871}
2148 2872
2149void 2873void
2150ev_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
2151{ 2875{
2152 invoke_cb = invoke_pending_cb; 2876 invoke_cb = invoke_pending_cb;
2153} 2877}
2154 2878
2155void 2879void
2156ev_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
2157{ 2881{
2158 release_cb = release; 2882 release_cb = release;
2159 acquire_cb = acquire; 2883 acquire_cb = acquire;
2160} 2884}
2161#endif 2885#endif
2162 2886
2163/* initialise a loop structure, must be zero-initialised */ 2887/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 2888ecb_noinline ecb_cold
2889static void
2165loop_init (EV_P_ unsigned int flags) 2890loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2166{ 2891{
2167 if (!backend) 2892 if (!backend)
2168 { 2893 {
2169 origflags = flags; 2894 origflags = flags;
2170 2895
… …
2215#if EV_ASYNC_ENABLE 2940#if EV_ASYNC_ENABLE
2216 async_pending = 0; 2941 async_pending = 0;
2217#endif 2942#endif
2218 pipe_write_skipped = 0; 2943 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 2944 pipe_write_wanted = 0;
2945 evpipe [0] = -1;
2946 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 2947#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2948 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 2949#endif
2223#if EV_USE_SIGNALFD 2950#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2951 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2226 2953
2227 if (!(flags & EVBACKEND_MASK)) 2954 if (!(flags & EVBACKEND_MASK))
2228 flags |= ev_recommended_backends (); 2955 flags |= ev_recommended_backends ();
2229 2956
2230#if EV_USE_IOCP 2957#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 2958 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif 2959#endif
2233#if EV_USE_PORT 2960#if EV_USE_PORT
2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2961 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2235#endif 2962#endif
2236#if EV_USE_KQUEUE 2963#if EV_USE_KQUEUE
2237 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);
2238#endif 2968#endif
2239#if EV_USE_EPOLL 2969#if EV_USE_EPOLL
2240 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 2970 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2241#endif 2971#endif
2242#if EV_USE_POLL 2972#if EV_USE_POLL
2243 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 2973 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2244#endif 2974#endif
2245#if EV_USE_SELECT 2975#if EV_USE_SELECT
2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2976 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2247#endif 2977#endif
2248 2978
2249 ev_prepare_init (&pending_w, pendingcb); 2979 ev_prepare_init (&pending_w, pendingcb);
2250 2980
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2981#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2254#endif 2984#endif
2255 } 2985 }
2256} 2986}
2257 2987
2258/* free up a loop structure */ 2988/* free up a loop structure */
2259void ecb_cold 2989ecb_cold
2990void
2260ev_loop_destroy (EV_P) 2991ev_loop_destroy (EV_P)
2261{ 2992{
2262 int i; 2993 int i;
2263 2994
2264#if EV_MULTIPLICITY 2995#if EV_MULTIPLICITY
… …
2267 return; 2998 return;
2268#endif 2999#endif
2269 3000
2270#if EV_CLEANUP_ENABLE 3001#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */ 3002 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt)) 3003 if (ecb_expect_false (cleanupcnt))
2273 { 3004 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3005 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING; 3006 EV_INVOKE_PENDING;
2276 } 3007 }
2277#endif 3008#endif
2278 3009
2279#if EV_CHILD_ENABLE 3010#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 3011 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 3012 {
2282 ev_ref (EV_A); /* child watcher */ 3013 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 3014 ev_signal_stop (EV_A_ &childev);
2284 } 3015 }
2285#endif 3016#endif
… …
2287 if (ev_is_active (&pipe_w)) 3018 if (ev_is_active (&pipe_w))
2288 { 3019 {
2289 /*ev_ref (EV_A);*/ 3020 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 3021 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 3022
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 3023 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 3024 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 3025 }
2303 3026
2304#if EV_USE_SIGNALFD 3027#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 3028 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 3029 close (sigfd);
… …
2313 3036
2314 if (backend_fd >= 0) 3037 if (backend_fd >= 0)
2315 close (backend_fd); 3038 close (backend_fd);
2316 3039
2317#if EV_USE_IOCP 3040#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3041 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif 3042#endif
2320#if EV_USE_PORT 3043#if EV_USE_PORT
2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3044 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2322#endif 3045#endif
2323#if EV_USE_KQUEUE 3046#if EV_USE_KQUEUE
2324 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);
2325#endif 3051#endif
2326#if EV_USE_EPOLL 3052#if EV_USE_EPOLL
2327 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3053 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2328#endif 3054#endif
2329#if EV_USE_POLL 3055#if EV_USE_POLL
2330 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3056 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2331#endif 3057#endif
2332#if EV_USE_SELECT 3058#if EV_USE_SELECT
2333 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3059 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2334#endif 3060#endif
2335 3061
2336 for (i = NUMPRI; i--; ) 3062 for (i = NUMPRI; i--; )
2337 { 3063 {
2338 array_free (pending, [i]); 3064 array_free (pending, [i]);
… …
2380 3106
2381inline_size void 3107inline_size void
2382loop_fork (EV_P) 3108loop_fork (EV_P)
2383{ 3109{
2384#if EV_USE_PORT 3110#if EV_USE_PORT
2385 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3111 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2386#endif 3112#endif
2387#if EV_USE_KQUEUE 3113#if EV_USE_KQUEUE
2388 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);
2389#endif 3118#endif
2390#if EV_USE_EPOLL 3119#if EV_USE_EPOLL
2391 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3120 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2392#endif 3121#endif
2393#if EV_USE_INOTIFY 3122#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 3123 infy_fork (EV_A);
2395#endif 3124#endif
2396 3125
3126#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 3127 if (ev_is_active (&pipe_w) && postfork != 2)
2398 { 3128 {
2399 /* 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 */
2400 3130
2401 ev_ref (EV_A); 3131 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 3132 ev_io_stop (EV_A_ &pipe_w);
2403 3133
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 3134 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 3135 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 3136
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 3137 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 3138 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 3139 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 3140 }
3141#endif
2421 3142
2422 postfork = 0; 3143 postfork = 0;
2423} 3144}
2424 3145
2425#if EV_MULTIPLICITY 3146#if EV_MULTIPLICITY
2426 3147
3148ecb_cold
2427struct ev_loop * ecb_cold 3149struct ev_loop *
2428ev_loop_new (unsigned int flags) 3150ev_loop_new (unsigned int flags) EV_NOEXCEPT
2429{ 3151{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3152 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 3153
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 3154 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 3155 loop_init (EV_A_ flags);
… …
2440} 3162}
2441 3163
2442#endif /* multiplicity */ 3164#endif /* multiplicity */
2443 3165
2444#if EV_VERIFY 3166#if EV_VERIFY
2445static void noinline ecb_cold 3167ecb_noinline ecb_cold
3168static void
2446verify_watcher (EV_P_ W w) 3169verify_watcher (EV_P_ W w)
2447{ 3170{
2448 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));
2449 3172
2450 if (w->pending) 3173 if (w->pending)
2451 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));
2452} 3175}
2453 3176
2454static void noinline ecb_cold 3177ecb_noinline ecb_cold
3178static void
2455verify_heap (EV_P_ ANHE *heap, int N) 3179verify_heap (EV_P_ ANHE *heap, int N)
2456{ 3180{
2457 int i; 3181 int i;
2458 3182
2459 for (i = HEAP0; i < N + HEAP0; ++i) 3183 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2464 3188
2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3189 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2466 } 3190 }
2467} 3191}
2468 3192
2469static void noinline ecb_cold 3193ecb_noinline ecb_cold
3194static void
2470array_verify (EV_P_ W *ws, int cnt) 3195array_verify (EV_P_ W *ws, int cnt)
2471{ 3196{
2472 while (cnt--) 3197 while (cnt--)
2473 { 3198 {
2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3199 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2477} 3202}
2478#endif 3203#endif
2479 3204
2480#if EV_FEATURE_API 3205#if EV_FEATURE_API
2481void ecb_cold 3206void ecb_cold
2482ev_verify (EV_P) 3207ev_verify (EV_P) EV_NOEXCEPT
2483{ 3208{
2484#if EV_VERIFY 3209#if EV_VERIFY
2485 int i; 3210 int i;
2486 WL w; 3211 WL w, w2;
2487 3212
2488 assert (activecnt >= -1); 3213 assert (activecnt >= -1);
2489 3214
2490 assert (fdchangemax >= fdchangecnt); 3215 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 3216 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3217 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 3218
2494 assert (anfdmax >= 0); 3219 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 3220 for (i = 0; i < anfdmax; ++i)
3221 {
3222 int j = 0;
3223
2496 for (w = anfds [i].head; w; w = w->next) 3224 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 3225 {
2498 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
2499 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));
2500 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));
2501 } 3236 }
3237 }
2502 3238
2503 assert (timermax >= timercnt); 3239 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 3240 verify_heap (EV_A_ timers, timercnt);
2505 3241
2506#if EV_PERIODIC_ENABLE 3242#if EV_PERIODIC_ENABLE
… …
2552#endif 3288#endif
2553} 3289}
2554#endif 3290#endif
2555 3291
2556#if EV_MULTIPLICITY 3292#if EV_MULTIPLICITY
3293ecb_cold
2557struct ev_loop * ecb_cold 3294struct ev_loop *
2558#else 3295#else
2559int 3296int
2560#endif 3297#endif
2561ev_default_loop (unsigned int flags) 3298ev_default_loop (unsigned int flags) EV_NOEXCEPT
2562{ 3299{
2563 if (!ev_default_loop_ptr) 3300 if (!ev_default_loop_ptr)
2564 { 3301 {
2565#if EV_MULTIPLICITY 3302#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 3303 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 3322
2586 return ev_default_loop_ptr; 3323 return ev_default_loop_ptr;
2587} 3324}
2588 3325
2589void 3326void
2590ev_loop_fork (EV_P) 3327ev_loop_fork (EV_P) EV_NOEXCEPT
2591{ 3328{
2592 postfork = 1; /* must be in line with ev_default_fork */ 3329 postfork = 1;
2593} 3330}
2594 3331
2595/*****************************************************************************/ 3332/*****************************************************************************/
2596 3333
2597void 3334void
… …
2599{ 3336{
2600 EV_CB_INVOKE ((W)w, revents); 3337 EV_CB_INVOKE ((W)w, revents);
2601} 3338}
2602 3339
2603unsigned int 3340unsigned int
2604ev_pending_count (EV_P) 3341ev_pending_count (EV_P) EV_NOEXCEPT
2605{ 3342{
2606 int pri; 3343 int pri;
2607 unsigned int count = 0; 3344 unsigned int count = 0;
2608 3345
2609 for (pri = NUMPRI; pri--; ) 3346 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri]; 3347 count += pendingcnt [pri];
2611 3348
2612 return count; 3349 return count;
2613} 3350}
2614 3351
2615void noinline 3352ecb_noinline
3353void
2616ev_invoke_pending (EV_P) 3354ev_invoke_pending (EV_P)
2617{ 3355{
2618 int pri; 3356 pendingpri = NUMPRI;
2619 3357
2620 for (pri = NUMPRI; pri--; ) 3358 do
3359 {
3360 --pendingpri;
3361
3362 /* pendingpri possibly gets modified in the inner loop */
2621 while (pendingcnt [pri]) 3363 while (pendingcnt [pendingpri])
2622 { 3364 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3365 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3366
2625 p->w->pending = 0; 3367 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3368 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3369 EV_FREQUENT_CHECK;
2628 } 3370 }
3371 }
3372 while (pendingpri);
2629} 3373}
2630 3374
2631#if EV_IDLE_ENABLE 3375#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3376/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3377/* only when higher priorities are idle" logic */
2634inline_size void 3378inline_size void
2635idle_reify (EV_P) 3379idle_reify (EV_P)
2636{ 3380{
2637 if (expect_false (idleall)) 3381 if (ecb_expect_false (idleall))
2638 { 3382 {
2639 int pri; 3383 int pri;
2640 3384
2641 for (pri = NUMPRI; pri--; ) 3385 for (pri = NUMPRI; pri--; )
2642 { 3386 {
… …
2691 } 3435 }
2692} 3436}
2693 3437
2694#if EV_PERIODIC_ENABLE 3438#if EV_PERIODIC_ENABLE
2695 3439
2696static void noinline 3440ecb_noinline
3441static void
2697periodic_recalc (EV_P_ ev_periodic *w) 3442periodic_recalc (EV_P_ ev_periodic *w)
2698{ 3443{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3444 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3445 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701 3446
… …
2703 while (at <= ev_rt_now) 3448 while (at <= ev_rt_now)
2704 { 3449 {
2705 ev_tstamp nat = at + w->interval; 3450 ev_tstamp nat = at + w->interval;
2706 3451
2707 /* when resolution fails us, we use ev_rt_now */ 3452 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at)) 3453 if (ecb_expect_false (nat == at))
2709 { 3454 {
2710 at = ev_rt_now; 3455 at = ev_rt_now;
2711 break; 3456 break;
2712 } 3457 }
2713 3458
… …
2723{ 3468{
2724 EV_FREQUENT_CHECK; 3469 EV_FREQUENT_CHECK;
2725 3470
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3471 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3472 {
2728 int feed_count = 0;
2729
2730 do 3473 do
2731 { 3474 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3475 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3476
2734 /*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)));*/
… …
2761 } 3504 }
2762} 3505}
2763 3506
2764/* simply recalculate all periodics */ 3507/* simply recalculate all periodics */
2765/* 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? */
2766static void noinline ecb_cold 3509ecb_noinline ecb_cold
3510static void
2767periodics_reschedule (EV_P) 3511periodics_reschedule (EV_P)
2768{ 3512{
2769 int i; 3513 int i;
2770 3514
2771 /* adjust periodics after time jump */ 3515 /* adjust periodics after time jump */
… …
2784 reheap (periodics, periodiccnt); 3528 reheap (periodics, periodiccnt);
2785} 3529}
2786#endif 3530#endif
2787 3531
2788/* adjust all timers by a given offset */ 3532/* adjust all timers by a given offset */
2789static void noinline ecb_cold 3533ecb_noinline ecb_cold
3534static void
2790timers_reschedule (EV_P_ ev_tstamp adjust) 3535timers_reschedule (EV_P_ ev_tstamp adjust)
2791{ 3536{
2792 int i; 3537 int i;
2793 3538
2794 for (i = 0; i < timercnt; ++i) 3539 for (i = 0; i < timercnt; ++i)
… …
2803/* also detect if there was a timejump, and act accordingly */ 3548/* also detect if there was a timejump, and act accordingly */
2804inline_speed void 3549inline_speed void
2805time_update (EV_P_ ev_tstamp max_block) 3550time_update (EV_P_ ev_tstamp max_block)
2806{ 3551{
2807#if EV_USE_MONOTONIC 3552#if EV_USE_MONOTONIC
2808 if (expect_true (have_monotonic)) 3553 if (ecb_expect_true (have_monotonic))
2809 { 3554 {
2810 int i; 3555 int i;
2811 ev_tstamp odiff = rtmn_diff; 3556 ev_tstamp odiff = rtmn_diff;
2812 3557
2813 mn_now = get_clock (); 3558 mn_now = get_clock ();
2814 3559
2815 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3560 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2816 /* interpolate in the meantime */ 3561 /* interpolate in the meantime */
2817 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3562 if (ecb_expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
2818 { 3563 {
2819 ev_rt_now = rtmn_diff + mn_now; 3564 ev_rt_now = rtmn_diff + mn_now;
2820 return; 3565 return;
2821 } 3566 }
2822 3567
… …
2836 ev_tstamp diff; 3581 ev_tstamp diff;
2837 rtmn_diff = ev_rt_now - mn_now; 3582 rtmn_diff = ev_rt_now - mn_now;
2838 3583
2839 diff = odiff - rtmn_diff; 3584 diff = odiff - rtmn_diff;
2840 3585
2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3586 if (ecb_expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2842 return; /* all is well */ 3587 return; /* all is well */
2843 3588
2844 ev_rt_now = ev_time (); 3589 ev_rt_now = ev_time ();
2845 mn_now = get_clock (); 3590 mn_now = get_clock ();
2846 now_floor = mn_now; 3591 now_floor = mn_now;
… …
2855 else 3600 else
2856#endif 3601#endif
2857 { 3602 {
2858 ev_rt_now = ev_time (); 3603 ev_rt_now = ev_time ();
2859 3604
2860 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3605 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
2861 { 3606 {
2862 /* adjust timers. this is easy, as the offset is the same for all of them */ 3607 /* adjust timers. this is easy, as the offset is the same for all of them */
2863 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3608 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2864#if EV_PERIODIC_ENABLE 3609#if EV_PERIODIC_ENABLE
2865 periodics_reschedule (EV_A); 3610 periodics_reschedule (EV_A);
… …
2868 3613
2869 mn_now = ev_rt_now; 3614 mn_now = ev_rt_now;
2870 } 3615 }
2871} 3616}
2872 3617
2873void 3618int
2874ev_run (EV_P_ int flags) 3619ev_run (EV_P_ int flags)
2875{ 3620{
2876#if EV_FEATURE_API 3621#if EV_FEATURE_API
2877 ++loop_depth; 3622 ++loop_depth;
2878#endif 3623#endif
… …
2888#if EV_VERIFY >= 2 3633#if EV_VERIFY >= 2
2889 ev_verify (EV_A); 3634 ev_verify (EV_A);
2890#endif 3635#endif
2891 3636
2892#ifndef _WIN32 3637#ifndef _WIN32
2893 if (expect_false (curpid)) /* penalise the forking check even more */ 3638 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2894 if (expect_false (getpid () != curpid)) 3639 if (ecb_expect_false (getpid () != curpid))
2895 { 3640 {
2896 curpid = getpid (); 3641 curpid = getpid ();
2897 postfork = 1; 3642 postfork = 1;
2898 } 3643 }
2899#endif 3644#endif
2900 3645
2901#if EV_FORK_ENABLE 3646#if EV_FORK_ENABLE
2902 /* we might have forked, so queue fork handlers */ 3647 /* we might have forked, so queue fork handlers */
2903 if (expect_false (postfork)) 3648 if (ecb_expect_false (postfork))
2904 if (forkcnt) 3649 if (forkcnt)
2905 { 3650 {
2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3651 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2907 EV_INVOKE_PENDING; 3652 EV_INVOKE_PENDING;
2908 } 3653 }
2909#endif 3654#endif
2910 3655
2911#if EV_PREPARE_ENABLE 3656#if EV_PREPARE_ENABLE
2912 /* queue prepare watchers (and execute them) */ 3657 /* queue prepare watchers (and execute them) */
2913 if (expect_false (preparecnt)) 3658 if (ecb_expect_false (preparecnt))
2914 { 3659 {
2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3660 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2916 EV_INVOKE_PENDING; 3661 EV_INVOKE_PENDING;
2917 } 3662 }
2918#endif 3663#endif
2919 3664
2920 if (expect_false (loop_done)) 3665 if (ecb_expect_false (loop_done))
2921 break; 3666 break;
2922 3667
2923 /* we might have forked, so reify kernel state if necessary */ 3668 /* we might have forked, so reify kernel state if necessary */
2924 if (expect_false (postfork)) 3669 if (ecb_expect_false (postfork))
2925 loop_fork (EV_A); 3670 loop_fork (EV_A);
2926 3671
2927 /* update fd-related kernel structures */ 3672 /* update fd-related kernel structures */
2928 fd_reify (EV_A); 3673 fd_reify (EV_A);
2929 3674
… …
2941 /* from now on, we want a pipe-wake-up */ 3686 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1; 3687 pipe_write_wanted = 1;
2943 3688
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3689 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945 3690
2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3691 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2947 { 3692 {
2948 waittime = MAX_BLOCKTIME; 3693 waittime = MAX_BLOCKTIME;
2949 3694
2950 if (timercnt) 3695 if (timercnt)
2951 { 3696 {
… …
2960 if (waittime > to) waittime = to; 3705 if (waittime > to) waittime = to;
2961 } 3706 }
2962#endif 3707#endif
2963 3708
2964 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3709 /* don't let timeouts decrease the waittime below timeout_blocktime */
2965 if (expect_false (waittime < timeout_blocktime)) 3710 if (ecb_expect_false (waittime < timeout_blocktime))
2966 waittime = timeout_blocktime; 3711 waittime = timeout_blocktime;
2967 3712
2968 /* at this point, we NEED to wait, so we have to ensure */ 3713 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */ 3714 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime)) 3715 if (ecb_expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime; 3716 waittime = backend_mintime;
2972 3717
2973 /* extra check because io_blocktime is commonly 0 */ 3718 /* extra check because io_blocktime is commonly 0 */
2974 if (expect_false (io_blocktime)) 3719 if (ecb_expect_false (io_blocktime))
2975 { 3720 {
2976 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3721 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2977 3722
2978 if (sleeptime > waittime - backend_mintime) 3723 if (sleeptime > waittime - backend_mintime)
2979 sleeptime = waittime - backend_mintime; 3724 sleeptime = waittime - backend_mintime;
2980 3725
2981 if (expect_true (sleeptime > 0.)) 3726 if (ecb_expect_true (sleeptime > 0.))
2982 { 3727 {
2983 ev_sleep (sleeptime); 3728 ev_sleep (sleeptime);
2984 waittime -= sleeptime; 3729 waittime -= sleeptime;
2985 } 3730 }
2986 } 3731 }
… …
2991#endif 3736#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3737 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3738 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3739 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3740
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3741 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3742
3743 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3744 if (pipe_write_skipped)
2999 { 3745 {
3000 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)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3747 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3748 }
3003 3749
3004
3005 /* update ev_rt_now, do magic */ 3750 /* update ev_rt_now, do magic */
3006 time_update (EV_A_ waittime + sleeptime); 3751 time_update (EV_A_ waittime + sleeptime);
3007 } 3752 }
3008 3753
3009 /* queue pending timers and reschedule them */ 3754 /* queue pending timers and reschedule them */
… …
3017 idle_reify (EV_A); 3762 idle_reify (EV_A);
3018#endif 3763#endif
3019 3764
3020#if EV_CHECK_ENABLE 3765#if EV_CHECK_ENABLE
3021 /* queue check watchers, to be executed first */ 3766 /* queue check watchers, to be executed first */
3022 if (expect_false (checkcnt)) 3767 if (ecb_expect_false (checkcnt))
3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3768 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif 3769#endif
3025 3770
3026 EV_INVOKE_PENDING; 3771 EV_INVOKE_PENDING;
3027 } 3772 }
3028 while (expect_true ( 3773 while (ecb_expect_true (
3029 activecnt 3774 activecnt
3030 && !loop_done 3775 && !loop_done
3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 3776 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3032 )); 3777 ));
3033 3778
… …
3035 loop_done = EVBREAK_CANCEL; 3780 loop_done = EVBREAK_CANCEL;
3036 3781
3037#if EV_FEATURE_API 3782#if EV_FEATURE_API
3038 --loop_depth; 3783 --loop_depth;
3039#endif 3784#endif
3040}
3041 3785
3786 return activecnt;
3787}
3788
3042void 3789void
3043ev_break (EV_P_ int how) 3790ev_break (EV_P_ int how) EV_NOEXCEPT
3044{ 3791{
3045 loop_done = how; 3792 loop_done = how;
3046} 3793}
3047 3794
3048void 3795void
3049ev_ref (EV_P) 3796ev_ref (EV_P) EV_NOEXCEPT
3050{ 3797{
3051 ++activecnt; 3798 ++activecnt;
3052} 3799}
3053 3800
3054void 3801void
3055ev_unref (EV_P) 3802ev_unref (EV_P) EV_NOEXCEPT
3056{ 3803{
3057 --activecnt; 3804 --activecnt;
3058} 3805}
3059 3806
3060void 3807void
3061ev_now_update (EV_P) 3808ev_now_update (EV_P) EV_NOEXCEPT
3062{ 3809{
3063 time_update (EV_A_ 1e100); 3810 time_update (EV_A_ 1e100);
3064} 3811}
3065 3812
3066void 3813void
3067ev_suspend (EV_P) 3814ev_suspend (EV_P) EV_NOEXCEPT
3068{ 3815{
3069 ev_now_update (EV_A); 3816 ev_now_update (EV_A);
3070} 3817}
3071 3818
3072void 3819void
3073ev_resume (EV_P) 3820ev_resume (EV_P) EV_NOEXCEPT
3074{ 3821{
3075 ev_tstamp mn_prev = mn_now; 3822 ev_tstamp mn_prev = mn_now;
3076 3823
3077 ev_now_update (EV_A); 3824 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3825 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3095inline_size void 3842inline_size void
3096wlist_del (WL *head, WL elem) 3843wlist_del (WL *head, WL elem)
3097{ 3844{
3098 while (*head) 3845 while (*head)
3099 { 3846 {
3100 if (expect_true (*head == elem)) 3847 if (ecb_expect_true (*head == elem))
3101 { 3848 {
3102 *head = elem->next; 3849 *head = elem->next;
3103 break; 3850 break;
3104 } 3851 }
3105 3852
… …
3117 w->pending = 0; 3864 w->pending = 0;
3118 } 3865 }
3119} 3866}
3120 3867
3121int 3868int
3122ev_clear_pending (EV_P_ void *w) 3869ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3123{ 3870{
3124 W w_ = (W)w; 3871 W w_ = (W)w;
3125 int pending = w_->pending; 3872 int pending = w_->pending;
3126 3873
3127 if (expect_true (pending)) 3874 if (ecb_expect_true (pending))
3128 { 3875 {
3129 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3876 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3130 p->w = (W)&pending_w; 3877 p->w = (W)&pending_w;
3131 w_->pending = 0; 3878 w_->pending = 0;
3132 return p->events; 3879 return p->events;
… …
3159 w->active = 0; 3906 w->active = 0;
3160} 3907}
3161 3908
3162/*****************************************************************************/ 3909/*****************************************************************************/
3163 3910
3164void noinline 3911ecb_noinline
3912void
3165ev_io_start (EV_P_ ev_io *w) 3913ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3166{ 3914{
3167 int fd = w->fd; 3915 int fd = w->fd;
3168 3916
3169 if (expect_false (ev_is_active (w))) 3917 if (ecb_expect_false (ev_is_active (w)))
3170 return; 3918 return;
3171 3919
3172 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3920 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3921 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3174 3922
3923#if EV_VERIFY >= 2
3924 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
3925#endif
3175 EV_FREQUENT_CHECK; 3926 EV_FREQUENT_CHECK;
3176 3927
3177 ev_start (EV_A_ (W)w, 1); 3928 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3929 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3179 wlist_add (&anfds[fd].head, (WL)w); 3930 wlist_add (&anfds[fd].head, (WL)w);
3931
3932 /* common bug, apparently */
3933 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3180 3934
3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3935 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3182 w->events &= ~EV__IOFDSET; 3936 w->events &= ~EV__IOFDSET;
3183 3937
3184 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3185} 3939}
3186 3940
3187void noinline 3941ecb_noinline
3942void
3188ev_io_stop (EV_P_ ev_io *w) 3943ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3189{ 3944{
3190 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3946 if (ecb_expect_false (!ev_is_active (w)))
3192 return; 3947 return;
3193 3948
3194 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3949 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3195 3950
3951#if EV_VERIFY >= 2
3952 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
3953#endif
3196 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
3197 3955
3198 wlist_del (&anfds[w->fd].head, (WL)w); 3956 wlist_del (&anfds[w->fd].head, (WL)w);
3199 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
3200 3958
3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3959 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3202 3960
3203 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
3204} 3962}
3205 3963
3206void noinline 3964ecb_noinline
3965void
3207ev_timer_start (EV_P_ ev_timer *w) 3966ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3208{ 3967{
3209 if (expect_false (ev_is_active (w))) 3968 if (ecb_expect_false (ev_is_active (w)))
3210 return; 3969 return;
3211 3970
3212 ev_at (w) += mn_now; 3971 ev_at (w) += mn_now;
3213 3972
3214 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3973 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3215 3974
3216 EV_FREQUENT_CHECK; 3975 EV_FREQUENT_CHECK;
3217 3976
3218 ++timercnt; 3977 ++timercnt;
3219 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3978 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3220 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 3979 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3221 ANHE_w (timers [ev_active (w)]) = (WT)w; 3980 ANHE_w (timers [ev_active (w)]) = (WT)w;
3222 ANHE_at_cache (timers [ev_active (w)]); 3981 ANHE_at_cache (timers [ev_active (w)]);
3223 upheap (timers, ev_active (w)); 3982 upheap (timers, ev_active (w));
3224 3983
3225 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
3226 3985
3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3986 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3228} 3987}
3229 3988
3230void noinline 3989ecb_noinline
3990void
3231ev_timer_stop (EV_P_ ev_timer *w) 3991ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3232{ 3992{
3233 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 3994 if (ecb_expect_false (!ev_is_active (w)))
3235 return; 3995 return;
3236 3996
3237 EV_FREQUENT_CHECK; 3997 EV_FREQUENT_CHECK;
3238 3998
3239 { 3999 {
… …
3241 4001
3242 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4002 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3243 4003
3244 --timercnt; 4004 --timercnt;
3245 4005
3246 if (expect_true (active < timercnt + HEAP0)) 4006 if (ecb_expect_true (active < timercnt + HEAP0))
3247 { 4007 {
3248 timers [active] = timers [timercnt + HEAP0]; 4008 timers [active] = timers [timercnt + HEAP0];
3249 adjustheap (timers, timercnt, active); 4009 adjustheap (timers, timercnt, active);
3250 } 4010 }
3251 } 4011 }
… …
3255 ev_stop (EV_A_ (W)w); 4015 ev_stop (EV_A_ (W)w);
3256 4016
3257 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
3258} 4018}
3259 4019
3260void noinline 4020ecb_noinline
4021void
3261ev_timer_again (EV_P_ ev_timer *w) 4022ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3262{ 4023{
3263 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
4025
4026 clear_pending (EV_A_ (W)w);
3264 4027
3265 if (ev_is_active (w)) 4028 if (ev_is_active (w))
3266 { 4029 {
3267 if (w->repeat) 4030 if (w->repeat)
3268 { 4031 {
… …
3281 4044
3282 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
3283} 4046}
3284 4047
3285ev_tstamp 4048ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 4049ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3287{ 4050{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4051 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 4052}
3290 4053
3291#if EV_PERIODIC_ENABLE 4054#if EV_PERIODIC_ENABLE
3292void noinline 4055ecb_noinline
4056void
3293ev_periodic_start (EV_P_ ev_periodic *w) 4057ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3294{ 4058{
3295 if (expect_false (ev_is_active (w))) 4059 if (ecb_expect_false (ev_is_active (w)))
3296 return; 4060 return;
3297 4061
3298 if (w->reschedule_cb) 4062 if (w->reschedule_cb)
3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4063 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3300 else if (w->interval) 4064 else if (w->interval)
… …
3307 4071
3308 EV_FREQUENT_CHECK; 4072 EV_FREQUENT_CHECK;
3309 4073
3310 ++periodiccnt; 4074 ++periodiccnt;
3311 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4075 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3312 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4076 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3313 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4077 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3314 ANHE_at_cache (periodics [ev_active (w)]); 4078 ANHE_at_cache (periodics [ev_active (w)]);
3315 upheap (periodics, ev_active (w)); 4079 upheap (periodics, ev_active (w));
3316 4080
3317 EV_FREQUENT_CHECK; 4081 EV_FREQUENT_CHECK;
3318 4082
3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4083 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3320} 4084}
3321 4085
3322void noinline 4086ecb_noinline
4087void
3323ev_periodic_stop (EV_P_ ev_periodic *w) 4088ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3324{ 4089{
3325 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4091 if (ecb_expect_false (!ev_is_active (w)))
3327 return; 4092 return;
3328 4093
3329 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3330 4095
3331 { 4096 {
… …
3333 4098
3334 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4099 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3335 4100
3336 --periodiccnt; 4101 --periodiccnt;
3337 4102
3338 if (expect_true (active < periodiccnt + HEAP0)) 4103 if (ecb_expect_true (active < periodiccnt + HEAP0))
3339 { 4104 {
3340 periodics [active] = periodics [periodiccnt + HEAP0]; 4105 periodics [active] = periodics [periodiccnt + HEAP0];
3341 adjustheap (periodics, periodiccnt, active); 4106 adjustheap (periodics, periodiccnt, active);
3342 } 4107 }
3343 } 4108 }
… …
3345 ev_stop (EV_A_ (W)w); 4110 ev_stop (EV_A_ (W)w);
3346 4111
3347 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
3348} 4113}
3349 4114
3350void noinline 4115ecb_noinline
4116void
3351ev_periodic_again (EV_P_ ev_periodic *w) 4117ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3352{ 4118{
3353 /* TODO: use adjustheap and recalculation */ 4119 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 4120 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 4121 ev_periodic_start (EV_A_ w);
3356} 4122}
… …
3360# define SA_RESTART 0 4126# define SA_RESTART 0
3361#endif 4127#endif
3362 4128
3363#if EV_SIGNAL_ENABLE 4129#if EV_SIGNAL_ENABLE
3364 4130
3365void noinline 4131ecb_noinline
4132void
3366ev_signal_start (EV_P_ ev_signal *w) 4133ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3367{ 4134{
3368 if (expect_false (ev_is_active (w))) 4135 if (ecb_expect_false (ev_is_active (w)))
3369 return; 4136 return;
3370 4137
3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4138 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3372 4139
3373#if EV_MULTIPLICITY 4140#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops", 4141 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4142 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 4143
3377 signals [w->signum - 1].loop = EV_A; 4144 signals [w->signum - 1].loop = EV_A;
4145 ECB_MEMORY_FENCE_RELEASE;
3378#endif 4146#endif
3379 4147
3380 EV_FREQUENT_CHECK; 4148 EV_FREQUENT_CHECK;
3381 4149
3382#if EV_USE_SIGNALFD 4150#if EV_USE_SIGNALFD
… …
3441 } 4209 }
3442 4210
3443 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3444} 4212}
3445 4213
3446void noinline 4214ecb_noinline
4215void
3447ev_signal_stop (EV_P_ ev_signal *w) 4216ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3448{ 4217{
3449 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 4219 if (ecb_expect_false (!ev_is_active (w)))
3451 return; 4220 return;
3452 4221
3453 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
3454 4223
3455 wlist_del (&signals [w->signum - 1].head, (WL)w); 4224 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3483#endif 4252#endif
3484 4253
3485#if EV_CHILD_ENABLE 4254#if EV_CHILD_ENABLE
3486 4255
3487void 4256void
3488ev_child_start (EV_P_ ev_child *w) 4257ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3489{ 4258{
3490#if EV_MULTIPLICITY 4259#if EV_MULTIPLICITY
3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4260 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3492#endif 4261#endif
3493 if (expect_false (ev_is_active (w))) 4262 if (ecb_expect_false (ev_is_active (w)))
3494 return; 4263 return;
3495 4264
3496 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3497 4266
3498 ev_start (EV_A_ (W)w, 1); 4267 ev_start (EV_A_ (W)w, 1);
… …
3500 4269
3501 EV_FREQUENT_CHECK; 4270 EV_FREQUENT_CHECK;
3502} 4271}
3503 4272
3504void 4273void
3505ev_child_stop (EV_P_ ev_child *w) 4274ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3506{ 4275{
3507 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3509 return; 4278 return;
3510 4279
3511 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3512 4281
3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4282 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3527 4296
3528#define DEF_STAT_INTERVAL 5.0074891 4297#define DEF_STAT_INTERVAL 5.0074891
3529#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4298#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3530#define MIN_STAT_INTERVAL 0.1074891 4299#define MIN_STAT_INTERVAL 0.1074891
3531 4300
3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4301ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3533 4302
3534#if EV_USE_INOTIFY 4303#if EV_USE_INOTIFY
3535 4304
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4305/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4306# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 4307
3539static void noinline 4308ecb_noinline
4309static void
3540infy_add (EV_P_ ev_stat *w) 4310infy_add (EV_P_ ev_stat *w)
3541{ 4311{
3542 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4312 w->wd = inotify_add_watch (fs_fd, w->path,
4313 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4314 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4315 | IN_DONT_FOLLOW | IN_MASK_ADD);
3543 4316
3544 if (w->wd >= 0) 4317 if (w->wd >= 0)
3545 { 4318 {
3546 struct statfs sfs; 4319 struct statfs sfs;
3547 4320
… …
3551 4324
3552 if (!fs_2625) 4325 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4326 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 4327 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 4328 && (sfs.f_type == 0x1373 /* devfs */
4329 || sfs.f_type == 0x4006 /* fat */
4330 || sfs.f_type == 0x4d44 /* msdos */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */ 4331 || sfs.f_type == 0xEF53 /* ext2/3 */
4332 || sfs.f_type == 0x72b6 /* jffs2 */
4333 || sfs.f_type == 0x858458f6 /* ramfs */
4334 || sfs.f_type == 0x5346544e /* ntfs */
3557 || sfs.f_type == 0x3153464a /* jfs */ 4335 || sfs.f_type == 0x3153464a /* jfs */
4336 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 4337 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 4338 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 4339 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4340 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 4341 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4342 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3564 } 4343 }
… …
3599 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4378 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3600 ev_timer_again (EV_A_ &w->timer); 4379 ev_timer_again (EV_A_ &w->timer);
3601 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4380 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3602} 4381}
3603 4382
3604static void noinline 4383ecb_noinline
4384static void
3605infy_del (EV_P_ ev_stat *w) 4385infy_del (EV_P_ ev_stat *w)
3606{ 4386{
3607 int slot; 4387 int slot;
3608 int wd = w->wd; 4388 int wd = w->wd;
3609 4389
… …
3616 4396
3617 /* remove this watcher, if others are watching it, they will rearm */ 4397 /* remove this watcher, if others are watching it, they will rearm */
3618 inotify_rm_watch (fs_fd, wd); 4398 inotify_rm_watch (fs_fd, wd);
3619} 4399}
3620 4400
3621static void noinline 4401ecb_noinline
4402static void
3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4403infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3623{ 4404{
3624 if (slot < 0) 4405 if (slot < 0)
3625 /* overflow, need to check for all hash slots */ 4406 /* overflow, need to check for all hash slots */
3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4407 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3662 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4443 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len; 4444 ofs += sizeof (struct inotify_event) + ev->len;
3664 } 4445 }
3665} 4446}
3666 4447
3667inline_size void ecb_cold 4448inline_size ecb_cold
4449void
3668ev_check_2625 (EV_P) 4450ev_check_2625 (EV_P)
3669{ 4451{
3670 /* kernels < 2.6.25 are borked 4452 /* kernels < 2.6.25 are borked
3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4453 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3672 */ 4454 */
… …
3677} 4459}
3678 4460
3679inline_size int 4461inline_size int
3680infy_newfd (void) 4462infy_newfd (void)
3681{ 4463{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4464#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4465 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4466 if (fd >= 0)
3685 return fd; 4467 return fd;
3686#endif 4468#endif
3687 return inotify_init (); 4469 return inotify_init ();
… …
3762#else 4544#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4545# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4546#endif
3765 4547
3766void 4548void
3767ev_stat_stat (EV_P_ ev_stat *w) 4549ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3768{ 4550{
3769 if (lstat (w->path, &w->attr) < 0) 4551 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4552 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4553 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4554 w->attr.st_nlink = 1;
3773} 4555}
3774 4556
3775static void noinline 4557ecb_noinline
4558static void
3776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4559stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3777{ 4560{
3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4561 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3779 4562
3780 ev_statdata prev = w->attr; 4563 ev_statdata prev = w->attr;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4594 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4595 }
3813} 4596}
3814 4597
3815void 4598void
3816ev_stat_start (EV_P_ ev_stat *w) 4599ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3817{ 4600{
3818 if (expect_false (ev_is_active (w))) 4601 if (ecb_expect_false (ev_is_active (w)))
3819 return; 4602 return;
3820 4603
3821 ev_stat_stat (EV_A_ w); 4604 ev_stat_stat (EV_A_ w);
3822 4605
3823 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4606 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3842 4625
3843 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3844} 4627}
3845 4628
3846void 4629void
3847ev_stat_stop (EV_P_ ev_stat *w) 4630ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3848{ 4631{
3849 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4633 if (ecb_expect_false (!ev_is_active (w)))
3851 return; 4634 return;
3852 4635
3853 EV_FREQUENT_CHECK; 4636 EV_FREQUENT_CHECK;
3854 4637
3855#if EV_USE_INOTIFY 4638#if EV_USE_INOTIFY
… …
3868} 4651}
3869#endif 4652#endif
3870 4653
3871#if EV_IDLE_ENABLE 4654#if EV_IDLE_ENABLE
3872void 4655void
3873ev_idle_start (EV_P_ ev_idle *w) 4656ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3874{ 4657{
3875 if (expect_false (ev_is_active (w))) 4658 if (ecb_expect_false (ev_is_active (w)))
3876 return; 4659 return;
3877 4660
3878 pri_adjust (EV_A_ (W)w); 4661 pri_adjust (EV_A_ (W)w);
3879 4662
3880 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
… …
3883 int active = ++idlecnt [ABSPRI (w)]; 4666 int active = ++idlecnt [ABSPRI (w)];
3884 4667
3885 ++idleall; 4668 ++idleall;
3886 ev_start (EV_A_ (W)w, active); 4669 ev_start (EV_A_ (W)w, active);
3887 4670
3888 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4671 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3889 idles [ABSPRI (w)][active - 1] = w; 4672 idles [ABSPRI (w)][active - 1] = w;
3890 } 4673 }
3891 4674
3892 EV_FREQUENT_CHECK; 4675 EV_FREQUENT_CHECK;
3893} 4676}
3894 4677
3895void 4678void
3896ev_idle_stop (EV_P_ ev_idle *w) 4679ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3897{ 4680{
3898 clear_pending (EV_A_ (W)w); 4681 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4682 if (ecb_expect_false (!ev_is_active (w)))
3900 return; 4683 return;
3901 4684
3902 EV_FREQUENT_CHECK; 4685 EV_FREQUENT_CHECK;
3903 4686
3904 { 4687 {
… …
3915} 4698}
3916#endif 4699#endif
3917 4700
3918#if EV_PREPARE_ENABLE 4701#if EV_PREPARE_ENABLE
3919void 4702void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4703ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3921{ 4704{
3922 if (expect_false (ev_is_active (w))) 4705 if (ecb_expect_false (ev_is_active (w)))
3923 return; 4706 return;
3924 4707
3925 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
3926 4709
3927 ev_start (EV_A_ (W)w, ++preparecnt); 4710 ev_start (EV_A_ (W)w, ++preparecnt);
3928 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4711 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3929 prepares [preparecnt - 1] = w; 4712 prepares [preparecnt - 1] = w;
3930 4713
3931 EV_FREQUENT_CHECK; 4714 EV_FREQUENT_CHECK;
3932} 4715}
3933 4716
3934void 4717void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4718ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3936{ 4719{
3937 clear_pending (EV_A_ (W)w); 4720 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4721 if (ecb_expect_false (!ev_is_active (w)))
3939 return; 4722 return;
3940 4723
3941 EV_FREQUENT_CHECK; 4724 EV_FREQUENT_CHECK;
3942 4725
3943 { 4726 {
… …
3953} 4736}
3954#endif 4737#endif
3955 4738
3956#if EV_CHECK_ENABLE 4739#if EV_CHECK_ENABLE
3957void 4740void
3958ev_check_start (EV_P_ ev_check *w) 4741ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3959{ 4742{
3960 if (expect_false (ev_is_active (w))) 4743 if (ecb_expect_false (ev_is_active (w)))
3961 return; 4744 return;
3962 4745
3963 EV_FREQUENT_CHECK; 4746 EV_FREQUENT_CHECK;
3964 4747
3965 ev_start (EV_A_ (W)w, ++checkcnt); 4748 ev_start (EV_A_ (W)w, ++checkcnt);
3966 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 4749 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3967 checks [checkcnt - 1] = w; 4750 checks [checkcnt - 1] = w;
3968 4751
3969 EV_FREQUENT_CHECK; 4752 EV_FREQUENT_CHECK;
3970} 4753}
3971 4754
3972void 4755void
3973ev_check_stop (EV_P_ ev_check *w) 4756ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3974{ 4757{
3975 clear_pending (EV_A_ (W)w); 4758 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4759 if (ecb_expect_false (!ev_is_active (w)))
3977 return; 4760 return;
3978 4761
3979 EV_FREQUENT_CHECK; 4762 EV_FREQUENT_CHECK;
3980 4763
3981 { 4764 {
… …
3990 EV_FREQUENT_CHECK; 4773 EV_FREQUENT_CHECK;
3991} 4774}
3992#endif 4775#endif
3993 4776
3994#if EV_EMBED_ENABLE 4777#if EV_EMBED_ENABLE
3995void noinline 4778ecb_noinline
4779void
3996ev_embed_sweep (EV_P_ ev_embed *w) 4780ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3997{ 4781{
3998 ev_run (w->other, EVRUN_NOWAIT); 4782 ev_run (w->other, EVRUN_NOWAIT);
3999} 4783}
4000 4784
4001static void 4785static void
… …
4049 ev_idle_stop (EV_A_ idle); 4833 ev_idle_stop (EV_A_ idle);
4050} 4834}
4051#endif 4835#endif
4052 4836
4053void 4837void
4054ev_embed_start (EV_P_ ev_embed *w) 4838ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4055{ 4839{
4056 if (expect_false (ev_is_active (w))) 4840 if (ecb_expect_false (ev_is_active (w)))
4057 return; 4841 return;
4058 4842
4059 { 4843 {
4060 EV_P = w->other; 4844 EV_P = w->other;
4061 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4845 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4080 4864
4081 EV_FREQUENT_CHECK; 4865 EV_FREQUENT_CHECK;
4082} 4866}
4083 4867
4084void 4868void
4085ev_embed_stop (EV_P_ ev_embed *w) 4869ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4086{ 4870{
4087 clear_pending (EV_A_ (W)w); 4871 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4872 if (ecb_expect_false (!ev_is_active (w)))
4089 return; 4873 return;
4090 4874
4091 EV_FREQUENT_CHECK; 4875 EV_FREQUENT_CHECK;
4092 4876
4093 ev_io_stop (EV_A_ &w->io); 4877 ev_io_stop (EV_A_ &w->io);
… …
4100} 4884}
4101#endif 4885#endif
4102 4886
4103#if EV_FORK_ENABLE 4887#if EV_FORK_ENABLE
4104void 4888void
4105ev_fork_start (EV_P_ ev_fork *w) 4889ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4106{ 4890{
4107 if (expect_false (ev_is_active (w))) 4891 if (ecb_expect_false (ev_is_active (w)))
4108 return; 4892 return;
4109 4893
4110 EV_FREQUENT_CHECK; 4894 EV_FREQUENT_CHECK;
4111 4895
4112 ev_start (EV_A_ (W)w, ++forkcnt); 4896 ev_start (EV_A_ (W)w, ++forkcnt);
4113 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 4897 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4114 forks [forkcnt - 1] = w; 4898 forks [forkcnt - 1] = w;
4115 4899
4116 EV_FREQUENT_CHECK; 4900 EV_FREQUENT_CHECK;
4117} 4901}
4118 4902
4119void 4903void
4120ev_fork_stop (EV_P_ ev_fork *w) 4904ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4121{ 4905{
4122 clear_pending (EV_A_ (W)w); 4906 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 4907 if (ecb_expect_false (!ev_is_active (w)))
4124 return; 4908 return;
4125 4909
4126 EV_FREQUENT_CHECK; 4910 EV_FREQUENT_CHECK;
4127 4911
4128 { 4912 {
… …
4138} 4922}
4139#endif 4923#endif
4140 4924
4141#if EV_CLEANUP_ENABLE 4925#if EV_CLEANUP_ENABLE
4142void 4926void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 4927ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4144{ 4928{
4145 if (expect_false (ev_is_active (w))) 4929 if (ecb_expect_false (ev_is_active (w)))
4146 return; 4930 return;
4147 4931
4148 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
4149 4933
4150 ev_start (EV_A_ (W)w, ++cleanupcnt); 4934 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 4935 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4152 cleanups [cleanupcnt - 1] = w; 4936 cleanups [cleanupcnt - 1] = w;
4153 4937
4154 /* cleanup watchers should never keep a refcount on the loop */ 4938 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A); 4939 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 4940 EV_FREQUENT_CHECK;
4157} 4941}
4158 4942
4159void 4943void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 4944ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4161{ 4945{
4162 clear_pending (EV_A_ (W)w); 4946 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4947 if (ecb_expect_false (!ev_is_active (w)))
4164 return; 4948 return;
4165 4949
4166 EV_FREQUENT_CHECK; 4950 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A); 4951 ev_ref (EV_A);
4168 4952
… …
4179} 4963}
4180#endif 4964#endif
4181 4965
4182#if EV_ASYNC_ENABLE 4966#if EV_ASYNC_ENABLE
4183void 4967void
4184ev_async_start (EV_P_ ev_async *w) 4968ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4185{ 4969{
4186 if (expect_false (ev_is_active (w))) 4970 if (ecb_expect_false (ev_is_active (w)))
4187 return; 4971 return;
4188 4972
4189 w->sent = 0; 4973 w->sent = 0;
4190 4974
4191 evpipe_init (EV_A); 4975 evpipe_init (EV_A);
4192 4976
4193 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
4194 4978
4195 ev_start (EV_A_ (W)w, ++asynccnt); 4979 ev_start (EV_A_ (W)w, ++asynccnt);
4196 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 4980 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4197 asyncs [asynccnt - 1] = w; 4981 asyncs [asynccnt - 1] = w;
4198 4982
4199 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
4200} 4984}
4201 4985
4202void 4986void
4203ev_async_stop (EV_P_ ev_async *w) 4987ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4204{ 4988{
4205 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
4207 return; 4991 return;
4208 4992
4209 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4210 4994
4211 { 4995 {
… …
4219 5003
4220 EV_FREQUENT_CHECK; 5004 EV_FREQUENT_CHECK;
4221} 5005}
4222 5006
4223void 5007void
4224ev_async_send (EV_P_ ev_async *w) 5008ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4225{ 5009{
4226 w->sent = 1; 5010 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 5011 evpipe_write (EV_A_ &async_pending);
4228} 5012}
4229#endif 5013#endif
… …
4266 5050
4267 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5051 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4268} 5052}
4269 5053
4270void 5054void
4271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5055ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4272{ 5056{
4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5057 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4274
4275 if (expect_false (!once))
4276 {
4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4278 return;
4279 }
4280 5058
4281 once->cb = cb; 5059 once->cb = cb;
4282 once->arg = arg; 5060 once->arg = arg;
4283 5061
4284 ev_init (&once->io, once_cb_io); 5062 ev_init (&once->io, once_cb_io);
… …
4297} 5075}
4298 5076
4299/*****************************************************************************/ 5077/*****************************************************************************/
4300 5078
4301#if EV_WALK_ENABLE 5079#if EV_WALK_ENABLE
4302void ecb_cold 5080ecb_cold
5081void
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5082ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4304{ 5083{
4305 int i, j; 5084 int i, j;
4306 ev_watcher_list *wl, *wn; 5085 ev_watcher_list *wl, *wn;
4307 5086
4308 if (types & (EV_IO | EV_EMBED)) 5087 if (types & (EV_IO | EV_EMBED))

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