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Comparing libev/ev.c (file contents):
Revision 1.440 by root, Tue May 29 21:37:14 2012 UTC vs.
Revision 1.537 by sf-exg, Sun May 14 19:02:31 2023 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 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 *
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#pragma clang diagnostic ignored "-Wunused-value"
41#pragma clang diagnostic ignored "-Wcomment"
42#pragma clang diagnostic ignored "-Wextern-initializer"
43
40/* this big block deduces configuration from config.h */ 44/* this big block deduces configuration from config.h */
41#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
42# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
43# include EV_CONFIG_H 47# include EV_CONFIG_H
44# else 48# else
45# include "config.h" 49# include "config.h"
46# endif 50# endif
47 51
48#if HAVE_FLOOR 52# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 53# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 54# define EV_USE_FLOOR 1
55# endif
51# endif 56# endif
52#endif
53 57
54# if HAVE_CLOCK_SYSCALL 58# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 59# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 60# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 61# ifndef EV_USE_REALTIME
… …
115# else 119# else
116# undef EV_USE_EPOLL 120# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 121# define EV_USE_EPOLL 0
118# endif 122# endif
119 123
124# if HAVE_LINUX_AIO_ABI_H
125# ifndef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
127# endif
128# else
129# undef EV_USE_LINUXAIO
130# define EV_USE_LINUXAIO 0
131# endif
132
133# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
134# ifndef EV_USE_IOURING
135# define EV_USE_IOURING EV_FEATURE_BACKENDS
136# endif
137# else
138# undef EV_USE_IOURING
139# define EV_USE_IOURING 0
140# endif
141
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 142# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 143# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 144# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 145# endif
124# else 146# else
… …
159# endif 181# endif
160# else 182# else
161# undef EV_USE_EVENTFD 183# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 184# define EV_USE_EVENTFD 0
163# endif 185# endif
164 186
187# if HAVE_SYS_TIMERFD_H
188# ifndef EV_USE_TIMERFD
189# define EV_USE_TIMERFD EV_FEATURE_OS
190# endif
191# else
192# undef EV_USE_TIMERFD
193# define EV_USE_TIMERFD 0
165#endif 194# endif
195
196#endif
197
198/* OS X, in its infinite idiocy, actually HARDCODES
199 * a limit of 1024 into their select. Where people have brains,
200 * OS X engineers apparently have a vacuum. Or maybe they were
201 * ordered to have a vacuum, or they do anything for money.
202 * This might help. Or not.
203 * Note that this must be defined early, as other include files
204 * will rely on this define as well.
205 */
206#define _DARWIN_UNLIMITED_SELECT 1
166 207
167#include <stdlib.h> 208#include <stdlib.h>
168#include <string.h> 209#include <string.h>
169#include <fcntl.h> 210#include <fcntl.h>
170#include <stddef.h> 211#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 249# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 250# define EV_SELECT_IS_WINSOCKET 1
210# endif 251# endif
211# undef EV_AVOID_STDIO 252# undef EV_AVOID_STDIO
212#endif 253#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 254
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 255/* this block tries to deduce configuration from header-defined symbols and defaults */
223 256
224/* try to deduce the maximum number of signals on this platform */ 257/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 258#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 274#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 275# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 276#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 277# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 278#else
246# error "unable to find value for NSIG, please report" 279# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 280#endif
251 281
252#ifndef EV_USE_FLOOR 282#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 283# define EV_USE_FLOOR 0
254#endif 284#endif
255 285
256#ifndef EV_USE_CLOCK_SYSCALL 286#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 287# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 288# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 289# else
260# define EV_USE_CLOCK_SYSCALL 0 290# define EV_USE_CLOCK_SYSCALL 0
291# endif
292#endif
293
294#if !(_POSIX_TIMERS > 0)
295# ifndef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 0
297# endif
298# ifndef EV_USE_REALTIME
299# define EV_USE_REALTIME 0
261# endif 300# endif
262#endif 301#endif
263 302
264#ifndef EV_USE_MONOTONIC 303#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 304# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 346
308#ifndef EV_USE_PORT 347#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 348# define EV_USE_PORT 0
310#endif 349#endif
311 350
351#ifndef EV_USE_LINUXAIO
352# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
353# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
354# else
355# define EV_USE_LINUXAIO 0
356# endif
357#endif
358
359#ifndef EV_USE_IOURING
360# if __linux /* later checks might disable again */
361# define EV_USE_IOURING 1
362# else
363# define EV_USE_IOURING 0
364# endif
365#endif
366
312#ifndef EV_USE_INOTIFY 367#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 368# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 369# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 370# else
316# define EV_USE_INOTIFY 0 371# define EV_USE_INOTIFY 0
… …
339# else 394# else
340# define EV_USE_SIGNALFD 0 395# define EV_USE_SIGNALFD 0
341# endif 396# endif
342#endif 397#endif
343 398
399#ifndef EV_USE_TIMERFD
400# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
401# define EV_USE_TIMERFD EV_FEATURE_OS
402# else
403# define EV_USE_TIMERFD 0
404# endif
405#endif
406
344#if 0 /* debugging */ 407#if 0 /* debugging */
345# define EV_VERIFY 3 408# define EV_VERIFY 3
346# define EV_USE_4HEAP 1 409# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1 410# define EV_HEAP_CACHE_AT 1
348#endif 411#endif
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 418# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 419#endif
357 420
358#ifndef EV_HEAP_CACHE_AT 421#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 422# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
423#endif
424
425#ifdef __ANDROID__
426/* supposedly, android doesn't typedef fd_mask */
427# undef EV_USE_SELECT
428# define EV_USE_SELECT 0
429/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
430# undef EV_USE_CLOCK_SYSCALL
431# define EV_USE_CLOCK_SYSCALL 0
432#endif
433
434/* aix's poll.h seems to cause lots of trouble */
435#ifdef _AIX
436/* AIX has a completely broken poll.h header */
437# undef EV_USE_POLL
438# define EV_USE_POLL 0
360#endif 439#endif
361 440
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 441/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */ 442/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 443#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h> 444# include <sys/syscall.h>
366# ifdef SYS_clock_gettime 445# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 446# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC 447# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1 448# define EV_USE_MONOTONIC 1
449# define EV_NEED_SYSCALL 1
370# else 450# else
371# undef EV_USE_CLOCK_SYSCALL 451# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0 452# define EV_USE_CLOCK_SYSCALL 0
373# endif 453# endif
374#endif 454#endif
375 455
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 456/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 457
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
384#ifndef CLOCK_MONOTONIC 458#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 459# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 460# define EV_USE_MONOTONIC 0
387#endif 461#endif
388 462
… …
392#endif 466#endif
393 467
394#if !EV_STAT_ENABLE 468#if !EV_STAT_ENABLE
395# undef EV_USE_INOTIFY 469# undef EV_USE_INOTIFY
396# define EV_USE_INOTIFY 0 470# define EV_USE_INOTIFY 0
471#endif
472
473#if __linux && EV_USE_IOURING
474# include <linux/version.h>
475# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
476# undef EV_USE_IOURING
477# define EV_USE_IOURING 0
478# endif
397#endif 479#endif
398 480
399#if !EV_USE_NANOSLEEP 481#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 482/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 483# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 484# include <sys/select.h>
485# endif
486#endif
487
488#if EV_USE_LINUXAIO
489# include <sys/syscall.h>
490# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
491# define EV_NEED_SYSCALL 1
492# else
493# undef EV_USE_LINUXAIO
494# define EV_USE_LINUXAIO 0
495# endif
496#endif
497
498#if EV_USE_IOURING
499# include <sys/syscall.h>
500# if !SYS_io_uring_register && __linux && !__alpha
501# define SYS_io_uring_setup 425
502# define SYS_io_uring_enter 426
503# define SYS_io_uring_register 427
504# endif
505# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
506# define EV_NEED_SYSCALL 1
507# else
508# undef EV_USE_IOURING
509# define EV_USE_IOURING 0
403# endif 510# endif
404#endif 511#endif
405 512
406#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
407# include <sys/statfs.h> 514# include <sys/statfs.h>
… …
412# define EV_USE_INOTIFY 0 519# define EV_USE_INOTIFY 0
413# endif 520# endif
414#endif 521#endif
415 522
416#if EV_USE_EVENTFD 523#if EV_USE_EVENTFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 524/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
418# include <stdint.h> 525# include <stdint.h>
419# ifndef EFD_NONBLOCK 526# ifndef EFD_NONBLOCK
420# define EFD_NONBLOCK O_NONBLOCK 527# define EFD_NONBLOCK O_NONBLOCK
421# endif 528# endif
422# ifndef EFD_CLOEXEC 529# ifndef EFD_CLOEXEC
… …
428# endif 535# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 536EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif 537#endif
431 538
432#if EV_USE_SIGNALFD 539#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 540/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 541# include <stdint.h>
435# ifndef SFD_NONBLOCK 542# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK 543# define SFD_NONBLOCK O_NONBLOCK
437# endif 544# endif
438# ifndef SFD_CLOEXEC 545# ifndef SFD_CLOEXEC
… …
440# define SFD_CLOEXEC O_CLOEXEC 547# define SFD_CLOEXEC O_CLOEXEC
441# else 548# else
442# define SFD_CLOEXEC 02000000 549# define SFD_CLOEXEC 02000000
443# endif 550# endif
444# endif 551# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 552EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
446 553
447struct signalfd_siginfo 554struct signalfd_siginfo
448{ 555{
449 uint32_t ssi_signo; 556 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)]; 557 char pad[128 - sizeof (uint32_t)];
451}; 558};
452#endif 559#endif
453 560
454/**/ 561/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
562#if EV_USE_TIMERFD
563# include <sys/timerfd.h>
564/* timerfd is only used for periodics */
565# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
566# undef EV_USE_TIMERFD
567# define EV_USE_TIMERFD 0
568# endif
569#endif
570
571/*****************************************************************************/
455 572
456#if EV_VERIFY >= 3 573#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 574# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 575#else
459# define EV_FREQUENT_CHECK do { } while (0) 576# define EV_FREQUENT_CHECK do { } while (0)
… …
464 * This value is good at least till the year 4000. 581 * This value is good at least till the year 4000.
465 */ 582 */
466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 583#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 584/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
468 585
469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 586#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 587#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
588#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
471 589
590/* find a portable timestamp that is "always" in the future but fits into time_t.
591 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
592 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
593#define EV_TSTAMP_HUGE \
594 (sizeof (time_t) >= 8 ? 10000000000000. \
595 : 0 < (time_t)4294967295 ? 4294967295. \
596 : 2147483647.) \
597
598#ifndef EV_TS_CONST
599# define EV_TS_CONST(nv) nv
600# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
601# define EV_TS_FROM_USEC(us) us * 1e-6
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 602# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 603# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
604# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
605# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
606#endif
474 607
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 608/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 609/* ECB.H BEGIN */
477/* 610/*
478 * libecb - http://software.schmorp.de/pkg/libecb 611 * libecb - http://software.schmorp.de/pkg/libecb
479 * 612 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 613 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 614 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 615 * All rights reserved.
483 * 616 *
484 * Redistribution and use in source and binary forms, with or without modifica- 617 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 618 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 632 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 633 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 634 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 635 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 636 * OF THE POSSIBILITY OF SUCH DAMAGE.
637 *
638 * Alternatively, the contents of this file may be used under the terms of
639 * the GNU General Public License ("GPL") version 2 or any later version,
640 * in which case the provisions of the GPL are applicable instead of
641 * the above. If you wish to allow the use of your version of this file
642 * only under the terms of the GPL and not to allow others to use your
643 * version of this file under the BSD license, indicate your decision
644 * by deleting the provisions above and replace them with the notice
645 * and other provisions required by the GPL. If you do not delete the
646 * provisions above, a recipient may use your version of this file under
647 * either the BSD or the GPL.
504 */ 648 */
505 649
506#ifndef ECB_H 650#ifndef ECB_H
507#define ECB_H 651#define ECB_H
508 652
509/* 16 bits major, 16 bits minor */ 653/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001 654#define ECB_VERSION 0x00010008
511 655
512#ifdef _WIN32 656#include <string.h> /* for memcpy */
657
658#if defined (_WIN32) && !defined (__MINGW32__)
513 typedef signed char int8_t; 659 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 660 typedef unsigned char uint8_t;
661 typedef signed char int_fast8_t;
662 typedef unsigned char uint_fast8_t;
515 typedef signed short int16_t; 663 typedef signed short int16_t;
516 typedef unsigned short uint16_t; 664 typedef unsigned short uint16_t;
665 typedef signed int int_fast16_t;
666 typedef unsigned int uint_fast16_t;
517 typedef signed int int32_t; 667 typedef signed int int32_t;
518 typedef unsigned int uint32_t; 668 typedef unsigned int uint32_t;
669 typedef signed int int_fast32_t;
670 typedef unsigned int uint_fast32_t;
519 #if __GNUC__ 671 #if __GNUC__
520 typedef signed long long int64_t; 672 typedef signed long long int64_t;
521 typedef unsigned long long uint64_t; 673 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 674 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 675 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 676 typedef unsigned __int64 uint64_t;
525 #endif 677 #endif
678 typedef int64_t int_fast64_t;
679 typedef uint64_t uint_fast64_t;
526 #ifdef _WIN64 680 #ifdef _WIN64
527 #define ECB_PTRSIZE 8 681 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t; 682 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t; 683 typedef int64_t intptr_t;
530 #else 684 #else
531 #define ECB_PTRSIZE 4 685 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t; 686 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 687 typedef int32_t intptr_t;
534 #endif 688 #endif
535 typedef intptr_t ptrdiff_t;
536#else 689#else
537 #include <inttypes.h> 690 #include <inttypes.h>
538 #if UINTMAX_MAX > 0xffffffffU 691 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
539 #define ECB_PTRSIZE 8 692 #define ECB_PTRSIZE 8
540 #else 693 #else
541 #define ECB_PTRSIZE 4 694 #define ECB_PTRSIZE 4
695 #endif
696#endif
697
698#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
699#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
700
701#ifndef ECB_OPTIMIZE_SIZE
702 #if __OPTIMIZE_SIZE__
703 #define ECB_OPTIMIZE_SIZE 1
704 #else
705 #define ECB_OPTIMIZE_SIZE 0
706 #endif
707#endif
708
709/* work around x32 idiocy by defining proper macros */
710#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
711 #if _ILP32
712 #define ECB_AMD64_X32 1
713 #else
714 #define ECB_AMD64 1
542 #endif 715 #endif
543#endif 716#endif
544 717
545/* many compilers define _GNUC_ to some versions but then only implement 718/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions, 719 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers. 720 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so. 721 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have 722 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place. 723 * an issue with that they should have done it right in the first place.
551 */ 724 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 725#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0 726 #define ECB_GCC_VERSION(major,minor) 0
555 #else 727#else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 728 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
557 #endif 729#endif
558#endif
559 730
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 731#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
561#define ECB_C99 (__STDC_VERSION__ >= 199901L) 732
562#define ECB_C11 (__STDC_VERSION__ >= 201112L) 733#if __clang__ && defined __has_builtin
734 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
735#else
736 #define ECB_CLANG_BUILTIN(x) 0
737#endif
738
739#if __clang__ && defined __has_extension
740 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
741#else
742 #define ECB_CLANG_EXTENSION(x) 0
743#endif
744
563#define ECB_CPP (__cplusplus+0) 745#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L) 746#define ECB_CPP11 (__cplusplus >= 201103L)
747#define ECB_CPP14 (__cplusplus >= 201402L)
748#define ECB_CPP17 (__cplusplus >= 201703L)
749
750#if ECB_CPP
751 #define ECB_C 0
752 #define ECB_STDC_VERSION 0
753#else
754 #define ECB_C 1
755 #define ECB_STDC_VERSION __STDC_VERSION__
756#endif
757
758#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
759#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
760#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
761
762#if ECB_CPP
763 #define ECB_EXTERN_C extern "C"
764 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
765 #define ECB_EXTERN_C_END }
766#else
767 #define ECB_EXTERN_C extern
768 #define ECB_EXTERN_C_BEG
769 #define ECB_EXTERN_C_END
770#endif
566 771
567/*****************************************************************************/ 772/*****************************************************************************/
568 773
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 774/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 775/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
… …
575 780
576#if ECB_NO_SMP 781#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0) 782 #define ECB_MEMORY_FENCE do { } while (0)
578#endif 783#endif
579 784
785/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
786#if __xlC__ && ECB_CPP
787 #include <builtins.h>
788#endif
789
790#if 1400 <= _MSC_VER
791 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
792#endif
793
580#ifndef ECB_MEMORY_FENCE 794#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 795 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
796 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
582 #if __i386 || __i386__ 797 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 801 #elif ECB_GCC_AMD64
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 803 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 804 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 805 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 806 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
807 #elif defined __ARM_ARCH_2__ \
808 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
809 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
810 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
811 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
812 || defined __ARM_ARCH_5TEJ__
813 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 814 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 815 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
816 || defined __ARM_ARCH_6T2__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 817 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 818 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 819 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__ 821 #elif __aarch64__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
823 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 825 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 826 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__ 827 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__ 829 #elif defined __mips__
830 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
831 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 832 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
606 #elif defined __alpha__ 833 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 834 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__ 835 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 836 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 837 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__ 838 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
840 #elif defined __m68k__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #elif defined __m88k__
843 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
844 #elif defined __sh__
845 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
613 #endif 846 #endif
614 #endif 847 #endif
615#endif 848#endif
616 849
617#ifndef ECB_MEMORY_FENCE 850#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7) 851 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */ 852 /* see comment below (stdatomic.h) about the C11 memory model. */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 853 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic) 854 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
622 /* see above */ 855 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
856 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
857
858 #elif ECB_CLANG_EXTENSION(c_atomic)
859 /* see comment below (stdatomic.h) about the C11 memory model. */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 860 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
861 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
862 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
863 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
864
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 865 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize () 866 #define ECB_MEMORY_FENCE __sync_synchronize ()
867 #elif _MSC_VER >= 1500 /* VC++ 2008 */
868 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
869 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
870 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
871 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
872 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 873 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 874 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 875 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 876 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 877 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32 878 #elif defined _WIN32
632 #include <WinNT.h> 879 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 880 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 881 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h> 882 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier () 883 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 884 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 885 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
886 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
639 #elif __xlC__ 887 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync () 888 #define ECB_MEMORY_FENCE __sync ()
641 #endif 889 #endif
642#endif 890#endif
643 891
644#ifndef ECB_MEMORY_FENCE 892#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 893 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */ 894 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */ 895 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h> 896 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 897 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
898 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
899 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
652 #endif 900 #endif
653#endif 901#endif
654 902
655#ifndef ECB_MEMORY_FENCE 903#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS 904 #if !ECB_AVOID_PTHREADS
… …
676 924
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 925#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 926 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif 927#endif
680 928
929#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
930 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
931#endif
932
681/*****************************************************************************/ 933/*****************************************************************************/
682 934
683#if __cplusplus 935#if ECB_CPP
684 #define ecb_inline static inline 936 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5) 937#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__ 938 #define ecb_inline static __inline__
687#elif ECB_C99 939#elif ECB_C99
688 #define ecb_inline static inline 940 #define ecb_inline static inline
… …
702 954
703#define ECB_CONCAT_(a, b) a ## b 955#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 956#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a 957#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 958#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
959#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
707 960
708#define ecb_function_ ecb_inline 961#define ecb_function_ ecb_inline
709 962
710#if ECB_GCC_VERSION(3,1) 963#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
711 #define ecb_attribute(attrlist) __attribute__(attrlist) 964 #define ecb_attribute(attrlist) __attribute__ (attrlist)
965#else
966 #define ecb_attribute(attrlist)
967#endif
968
969#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr) 970 #define ecb_is_constant(expr) __builtin_constant_p (expr)
971#else
972 /* possible C11 impl for integral types
973 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
974 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
975
976 #define ecb_is_constant(expr) 0
977#endif
978
979#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 980 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
981#else
982 #define ecb_expect(expr,value) (expr)
983#endif
984
985#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 986 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else 987#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality) 988 #define ecb_prefetch(addr,rw,locality)
720#endif 989#endif
721 990
722/* no emulation for ecb_decltype */ 991/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5) 992#if ECB_CPP11
993 // older implementations might have problems with decltype(x)::type, work around it
994 template<class T> struct ecb_decltype_t { typedef T type; };
724 #define ecb_decltype(x) __decltype(x) 995 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
725#elif ECB_GCC_VERSION(3,0) 996#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
726 #define ecb_decltype(x) __typeof(x) 997 #define ecb_decltype(x) __typeof__ (x)
727#endif 998#endif
728 999
1000#if _MSC_VER >= 1300
1001 #define ecb_deprecated __declspec (deprecated)
1002#else
1003 #define ecb_deprecated ecb_attribute ((__deprecated__))
1004#endif
1005
1006#if _MSC_VER >= 1500
1007 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1008#elif ECB_GCC_VERSION(4,5)
1009 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1010#else
1011 #define ecb_deprecated_message(msg) ecb_deprecated
1012#endif
1013
1014#if _MSC_VER >= 1400
1015 #define ecb_noinline __declspec (noinline)
1016#else
729#define ecb_noinline ecb_attribute ((__noinline__)) 1017 #define ecb_noinline ecb_attribute ((__noinline__))
1018#endif
1019
730#define ecb_unused ecb_attribute ((__unused__)) 1020#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__)) 1021#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__)) 1022#define ecb_pure ecb_attribute ((__pure__))
733 1023
734#if ECB_C11 1024#if ECB_C11 || __IBMC_NORETURN
1025 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
735 #define ecb_noreturn _Noreturn 1026 #define ecb_noreturn _Noreturn
1027#elif ECB_CPP11
1028 #define ecb_noreturn [[noreturn]]
1029#elif _MSC_VER >= 1200
1030 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1031 #define ecb_noreturn __declspec (noreturn)
736#else 1032#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1033 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif 1034#endif
739 1035
740#if ECB_GCC_VERSION(4,3) 1036#if ECB_GCC_VERSION(4,3)
… …
755/* for compatibility to the rest of the world */ 1051/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr) 1052#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr) 1053#define ecb_unlikely(expr) ecb_expect_false (expr)
758 1054
759/* count trailing zero bits and count # of one bits */ 1055/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4) 1056#if ECB_GCC_VERSION(3,4) \
1057 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1058 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1059 && ECB_CLANG_BUILTIN(__builtin_popcount))
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1060 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1061 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1062 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x) 1063 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x) 1064 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x) 1065 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */ 1066 /* no popcountll */
768#else 1067#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1068 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
770 ecb_function_ int 1069 ecb_function_ ecb_const int
771 ecb_ctz32 (uint32_t x) 1070 ecb_ctz32 (uint32_t x)
772 { 1071 {
1072#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1073 unsigned long r;
1074 _BitScanForward (&r, x);
1075 return (int)r;
1076#else
773 int r = 0; 1077 int r = 0;
774 1078
775 x &= ~x + 1; /* this isolates the lowest bit */ 1079 x &= ~x + 1; /* this isolates the lowest bit */
776 1080
777#if ECB_branchless_on_i386 1081#if ECB_branchless_on_i386
… …
787 if (x & 0xff00ff00) r += 8; 1091 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16; 1092 if (x & 0xffff0000) r += 16;
789#endif 1093#endif
790 1094
791 return r; 1095 return r;
1096#endif
792 } 1097 }
793 1098
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1099 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
795 ecb_function_ int 1100 ecb_function_ ecb_const int
796 ecb_ctz64 (uint64_t x) 1101 ecb_ctz64 (uint64_t x)
797 { 1102 {
1103#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1104 unsigned long r;
1105 _BitScanForward64 (&r, x);
1106 return (int)r;
1107#else
798 int shift = x & 0xffffffffU ? 0 : 32; 1108 int shift = x & 0xffffffff ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift; 1109 return ecb_ctz32 (x >> shift) + shift;
1110#endif
800 } 1111 }
801 1112
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1113 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
803 ecb_function_ int 1114 ecb_function_ ecb_const int
804 ecb_popcount32 (uint32_t x) 1115 ecb_popcount32 (uint32_t x)
805 { 1116 {
806 x -= (x >> 1) & 0x55555555; 1117 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1118 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f; 1119 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101; 1120 x *= 0x01010101;
810 1121
811 return x >> 24; 1122 return x >> 24;
812 } 1123 }
813 1124
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1125 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
815 ecb_function_ int ecb_ld32 (uint32_t x) 1126 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
816 { 1127 {
1128#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1129 unsigned long r;
1130 _BitScanReverse (&r, x);
1131 return (int)r;
1132#else
817 int r = 0; 1133 int r = 0;
818 1134
819 if (x >> 16) { x >>= 16; r += 16; } 1135 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; } 1136 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; } 1137 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; } 1138 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; } 1139 if (x >> 1) { r += 1; }
824 1140
825 return r; 1141 return r;
1142#endif
826 } 1143 }
827 1144
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1145 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
829 ecb_function_ int ecb_ld64 (uint64_t x) 1146 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
830 { 1147 {
1148#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1149 unsigned long r;
1150 _BitScanReverse64 (&r, x);
1151 return (int)r;
1152#else
831 int r = 0; 1153 int r = 0;
832 1154
833 if (x >> 32) { x >>= 32; r += 32; } 1155 if (x >> 32) { x >>= 32; r += 32; }
834 1156
835 return r + ecb_ld32 (x); 1157 return r + ecb_ld32 (x);
1158#endif
836 } 1159 }
837#endif 1160#endif
838 1161
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1163ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1164ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1165ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843 1166
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1167ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1168ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
846{ 1169{
847 return ( (x * 0x0802U & 0x22110U) 1170 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1171 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849} 1172}
850 1173
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1174ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1175ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
853{ 1176{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1177 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1178 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1179 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8); 1180 x = ( x >> 8 ) | ( x << 8);
858 1181
859 return x; 1182 return x;
860} 1183}
861 1184
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1185ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1186ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
864{ 1187{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1188 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1189 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1190 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1191 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
871 return x; 1194 return x;
872} 1195}
873 1196
874/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1197/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */ 1198/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1199ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
877ecb_function_ int 1200ecb_function_ ecb_const int
878ecb_popcount64 (uint64_t x) 1201ecb_popcount64 (uint64_t x)
879{ 1202{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1203 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881} 1204}
882 1205
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1210ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1211ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1212ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1213ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
891 1214
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1215ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1216ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1217ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1218ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1219ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1220ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1221ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1222ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900 1223
901#if ECB_GCC_VERSION(4,3) 1224#if ECB_CPP
1225
1226inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1227inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1228inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1229inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1230
1231inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1232inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1233inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1234inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1235
1236inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1237inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1238inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1239inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1240
1241inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1242inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1243inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1244inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1245
1246inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1247inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1248inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1249
1250inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1251inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1252inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1253inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1254
1255inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1256inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1257inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1258inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1259
1260#endif
1261
1262#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1263 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1264 #define ecb_bswap16(x) __builtin_bswap16 (x)
1265 #else
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1266 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1267 #endif
903 #define ecb_bswap32(x) __builtin_bswap32 (x) 1268 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x) 1269 #define ecb_bswap64(x) __builtin_bswap64 (x)
1270#elif _MSC_VER
1271 #include <stdlib.h>
1272 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1273 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1274 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
905#else 1275#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1276 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
907 ecb_function_ uint16_t 1277 ecb_function_ ecb_const uint16_t
908 ecb_bswap16 (uint16_t x) 1278 ecb_bswap16 (uint16_t x)
909 { 1279 {
910 return ecb_rotl16 (x, 8); 1280 return ecb_rotl16 (x, 8);
911 } 1281 }
912 1282
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1283 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
914 ecb_function_ uint32_t 1284 ecb_function_ ecb_const uint32_t
915 ecb_bswap32 (uint32_t x) 1285 ecb_bswap32 (uint32_t x)
916 { 1286 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1287 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 } 1288 }
919 1289
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1290 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
921 ecb_function_ uint64_t 1291 ecb_function_ ecb_const uint64_t
922 ecb_bswap64 (uint64_t x) 1292 ecb_bswap64 (uint64_t x)
923 { 1293 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1294 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 } 1295 }
926#endif 1296#endif
927 1297
928#if ECB_GCC_VERSION(4,5) 1298#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
929 #define ecb_unreachable() __builtin_unreachable () 1299 #define ecb_unreachable() __builtin_unreachable ()
930#else 1300#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1301 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1302 ecb_inline ecb_noreturn void ecb_unreachable (void);
933 ecb_inline void ecb_unreachable (void) { } 1303 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
934#endif 1304#endif
935 1305
936/* try to tell the compiler that some condition is definitely true */ 1306/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1307#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
938 1308
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1309ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
940ecb_inline unsigned char 1310ecb_inline ecb_const uint32_t
941ecb_byteorder_helper (void) 1311ecb_byteorder_helper (void)
942{ 1312{
943 const uint32_t u = 0x11223344; 1313 /* the union code still generates code under pressure in gcc, */
944 return *(unsigned char *)&u; 1314 /* but less than using pointers, and always seems to */
1315 /* successfully return a constant. */
1316 /* the reason why we have this horrible preprocessor mess */
1317 /* is to avoid it in all cases, at least on common architectures */
1318 /* or when using a recent enough gcc version (>= 4.6) */
1319#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1320 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1321 #define ECB_LITTLE_ENDIAN 1
1322 return 0x44332211;
1323#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1324 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1325 #define ECB_BIG_ENDIAN 1
1326 return 0x11223344;
1327#else
1328 union
1329 {
1330 uint8_t c[4];
1331 uint32_t u;
1332 } u = { 0x11, 0x22, 0x33, 0x44 };
1333 return u.u;
1334#endif
945} 1335}
946 1336
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1337ecb_inline ecb_const ecb_bool ecb_big_endian (void);
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1338ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1339ecb_inline ecb_const ecb_bool ecb_little_endian (void);
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1340ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1341
1342/*****************************************************************************/
1343/* unaligned load/store */
1344
1345ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1350ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1351ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1354ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1355ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1356
1357ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1362ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1363ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1364
1365ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1370ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1371ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1372
1373ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1374ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1375ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1376
1377ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1378ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1379ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1380
1381ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1382ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1383ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1384
1385#if ECB_CPP
1386
1387inline uint8_t ecb_bswap (uint8_t v) { return v; }
1388inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1389inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1390inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1391
1392template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1393template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1394template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1395template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1396template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1397template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1398template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1399template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1400
1401template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1402template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1403template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1404template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1405template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1406template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1407template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1408template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1409
1410#endif
1411
1412/*****************************************************************************/
951 1413
952#if ECB_GCC_VERSION(3,0) || ECB_C99 1414#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1415 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else 1416#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1417 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif 1418#endif
957 1419
958#if __cplusplus 1420#if ECB_CPP
959 template<typename T> 1421 template<typename T>
960 static inline T ecb_div_rd (T val, T div) 1422 static inline T ecb_div_rd (T val, T div)
961 { 1423 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1424 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 } 1425 }
… …
980 } 1442 }
981#else 1443#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1444 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif 1445#endif
984 1446
1447/*****************************************************************************/
1448
1449ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1450ecb_function_ ecb_const uint32_t
1451ecb_binary16_to_binary32 (uint32_t x)
1452{
1453 unsigned int s = (x & 0x8000) << (31 - 15);
1454 int e = (x >> 10) & 0x001f;
1455 unsigned int m = x & 0x03ff;
1456
1457 if (ecb_expect_false (e == 31))
1458 /* infinity or NaN */
1459 e = 255 - (127 - 15);
1460 else if (ecb_expect_false (!e))
1461 {
1462 if (ecb_expect_true (!m))
1463 /* zero, handled by code below by forcing e to 0 */
1464 e = 0 - (127 - 15);
1465 else
1466 {
1467 /* subnormal, renormalise */
1468 unsigned int s = 10 - ecb_ld32 (m);
1469
1470 m = (m << s) & 0x3ff; /* mask implicit bit */
1471 e -= s - 1;
1472 }
1473 }
1474
1475 /* e and m now are normalised, or zero, (or inf or nan) */
1476 e += 127 - 15;
1477
1478 return s | (e << 23) | (m << (23 - 10));
1479}
1480
1481ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1482ecb_function_ ecb_const uint16_t
1483ecb_binary32_to_binary16 (uint32_t x)
1484{
1485 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1486 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1487 unsigned int m = x & 0x007fffff;
1488
1489 x &= 0x7fffffff;
1490
1491 /* if it's within range of binary16 normals, use fast path */
1492 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1493 {
1494 /* mantissa round-to-even */
1495 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1496
1497 /* handle overflow */
1498 if (ecb_expect_false (m >= 0x00800000))
1499 {
1500 m >>= 1;
1501 e += 1;
1502 }
1503
1504 return s | (e << 10) | (m >> (23 - 10));
1505 }
1506
1507 /* handle large numbers and infinity */
1508 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1509 return s | 0x7c00;
1510
1511 /* handle zero, subnormals and small numbers */
1512 if (ecb_expect_true (x < 0x38800000))
1513 {
1514 /* zero */
1515 if (ecb_expect_true (!x))
1516 return s;
1517
1518 /* handle subnormals */
1519
1520 /* too small, will be zero */
1521 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1522 return s;
1523
1524 m |= 0x00800000; /* make implicit bit explicit */
1525
1526 /* very tricky - we need to round to the nearest e (+10) bit value */
1527 {
1528 unsigned int bits = 14 - e;
1529 unsigned int half = (1 << (bits - 1)) - 1;
1530 unsigned int even = (m >> bits) & 1;
1531
1532 /* if this overflows, we will end up with a normalised number */
1533 m = (m + half + even) >> bits;
1534 }
1535
1536 return s | m;
1537 }
1538
1539 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1540 m >>= 13;
1541
1542 return s | 0x7c00 | m | !m;
1543}
1544
1545/*******************************************************************************/
1546/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1547
1548/* basically, everything uses "ieee pure-endian" floating point numbers */
1549/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1550#if 0 \
1551 || __i386 || __i386__ \
1552 || ECB_GCC_AMD64 \
1553 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1554 || defined __s390__ || defined __s390x__ \
1555 || defined __mips__ \
1556 || defined __alpha__ \
1557 || defined __hppa__ \
1558 || defined __ia64__ \
1559 || defined __m68k__ \
1560 || defined __m88k__ \
1561 || defined __sh__ \
1562 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1563 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1564 || defined __aarch64__
1565 #define ECB_STDFP 1
1566#else
1567 #define ECB_STDFP 0
1568#endif
1569
1570#ifndef ECB_NO_LIBM
1571
1572 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1573
1574 /* only the oldest of old doesn't have this one. solaris. */
1575 #ifdef INFINITY
1576 #define ECB_INFINITY INFINITY
1577 #else
1578 #define ECB_INFINITY HUGE_VAL
1579 #endif
1580
1581 #ifdef NAN
1582 #define ECB_NAN NAN
1583 #else
1584 #define ECB_NAN ECB_INFINITY
1585 #endif
1586
1587 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1588 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1589 #define ecb_frexpf(x,e) frexpf ((x), (e))
1590 #else
1591 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1592 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1593 #endif
1594
1595 /* convert a float to ieee single/binary32 */
1596 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1597 ecb_function_ ecb_const uint32_t
1598 ecb_float_to_binary32 (float x)
1599 {
1600 uint32_t r;
1601
1602 #if ECB_STDFP
1603 memcpy (&r, &x, 4);
1604 #else
1605 /* slow emulation, works for anything but -0 */
1606 uint32_t m;
1607 int e;
1608
1609 if (x == 0e0f ) return 0x00000000U;
1610 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1611 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1612 if (x != x ) return 0x7fbfffffU;
1613
1614 m = ecb_frexpf (x, &e) * 0x1000000U;
1615
1616 r = m & 0x80000000U;
1617
1618 if (r)
1619 m = -m;
1620
1621 if (e <= -126)
1622 {
1623 m &= 0xffffffU;
1624 m >>= (-125 - e);
1625 e = -126;
1626 }
1627
1628 r |= (e + 126) << 23;
1629 r |= m & 0x7fffffU;
1630 #endif
1631
1632 return r;
1633 }
1634
1635 /* converts an ieee single/binary32 to a float */
1636 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1637 ecb_function_ ecb_const float
1638 ecb_binary32_to_float (uint32_t x)
1639 {
1640 float r;
1641
1642 #if ECB_STDFP
1643 memcpy (&r, &x, 4);
1644 #else
1645 /* emulation, only works for normals and subnormals and +0 */
1646 int neg = x >> 31;
1647 int e = (x >> 23) & 0xffU;
1648
1649 x &= 0x7fffffU;
1650
1651 if (e)
1652 x |= 0x800000U;
1653 else
1654 e = 1;
1655
1656 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1657 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1658
1659 r = neg ? -r : r;
1660 #endif
1661
1662 return r;
1663 }
1664
1665 /* convert a double to ieee double/binary64 */
1666 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1667 ecb_function_ ecb_const uint64_t
1668 ecb_double_to_binary64 (double x)
1669 {
1670 uint64_t r;
1671
1672 #if ECB_STDFP
1673 memcpy (&r, &x, 8);
1674 #else
1675 /* slow emulation, works for anything but -0 */
1676 uint64_t m;
1677 int e;
1678
1679 if (x == 0e0 ) return 0x0000000000000000U;
1680 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1681 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1682 if (x != x ) return 0X7ff7ffffffffffffU;
1683
1684 m = frexp (x, &e) * 0x20000000000000U;
1685
1686 r = m & 0x8000000000000000;;
1687
1688 if (r)
1689 m = -m;
1690
1691 if (e <= -1022)
1692 {
1693 m &= 0x1fffffffffffffU;
1694 m >>= (-1021 - e);
1695 e = -1022;
1696 }
1697
1698 r |= ((uint64_t)(e + 1022)) << 52;
1699 r |= m & 0xfffffffffffffU;
1700 #endif
1701
1702 return r;
1703 }
1704
1705 /* converts an ieee double/binary64 to a double */
1706 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1707 ecb_function_ ecb_const double
1708 ecb_binary64_to_double (uint64_t x)
1709 {
1710 double r;
1711
1712 #if ECB_STDFP
1713 memcpy (&r, &x, 8);
1714 #else
1715 /* emulation, only works for normals and subnormals and +0 */
1716 int neg = x >> 63;
1717 int e = (x >> 52) & 0x7ffU;
1718
1719 x &= 0xfffffffffffffU;
1720
1721 if (e)
1722 x |= 0x10000000000000U;
1723 else
1724 e = 1;
1725
1726 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1727 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1728
1729 r = neg ? -r : r;
1730 #endif
1731
1732 return r;
1733 }
1734
1735 /* convert a float to ieee half/binary16 */
1736 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1737 ecb_function_ ecb_const uint16_t
1738 ecb_float_to_binary16 (float x)
1739 {
1740 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1741 }
1742
1743 /* convert an ieee half/binary16 to float */
1744 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1745 ecb_function_ ecb_const float
1746 ecb_binary16_to_float (uint16_t x)
1747 {
1748 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1749 }
1750
1751#endif
1752
985#endif 1753#endif
986 1754
987/* ECB.H END */ 1755/* ECB.H END */
988 1756
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1757#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is 1758/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev 1759 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1760 * from multiple threads, then you can define ECB_NO_THREADS when compiling
993 * libev, in which cases the memory fences become nops. 1761 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread, 1762 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences. 1763 * which will then provide the memory fences.
996 */ 1764 */
997# error "memory fences not defined for your architecture, please report" 1765# error "memory fences not defined for your architecture, please report"
… …
1001# define ECB_MEMORY_FENCE do { } while (0) 1769# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1770# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1771# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif 1772#endif
1005 1773
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
1010#define inline_size ecb_inline 1774#define inline_size ecb_inline
1011 1775
1012#if EV_FEATURE_CODE 1776#if EV_FEATURE_CODE
1013# define inline_speed ecb_inline 1777# define inline_speed ecb_inline
1014#else 1778#else
1015# define inline_speed static noinline 1779# define inline_speed ecb_noinline static
1016#endif 1780#endif
1781
1782/*****************************************************************************/
1783/* raw syscall wrappers */
1784
1785#if EV_NEED_SYSCALL
1786
1787#include <sys/syscall.h>
1788
1789/*
1790 * define some syscall wrappers for common architectures
1791 * this is mostly for nice looks during debugging, not performance.
1792 * our syscalls return < 0, not == -1, on error. which is good
1793 * enough for linux aio.
1794 * TODO: arm is also common nowadays, maybe even mips and x86
1795 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1796 */
1797#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1798 /* the costly errno access probably kills this for size optimisation */
1799
1800 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1801 ({ \
1802 long res; \
1803 register unsigned long r6 __asm__ ("r9" ); \
1804 register unsigned long r5 __asm__ ("r8" ); \
1805 register unsigned long r4 __asm__ ("r10"); \
1806 register unsigned long r3 __asm__ ("rdx"); \
1807 register unsigned long r2 __asm__ ("rsi"); \
1808 register unsigned long r1 __asm__ ("rdi"); \
1809 if (narg >= 6) r6 = (unsigned long)(arg6); \
1810 if (narg >= 5) r5 = (unsigned long)(arg5); \
1811 if (narg >= 4) r4 = (unsigned long)(arg4); \
1812 if (narg >= 3) r3 = (unsigned long)(arg3); \
1813 if (narg >= 2) r2 = (unsigned long)(arg2); \
1814 if (narg >= 1) r1 = (unsigned long)(arg1); \
1815 __asm__ __volatile__ ( \
1816 "syscall\n\t" \
1817 : "=a" (res) \
1818 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1819 : "cc", "r11", "cx", "memory"); \
1820 errno = -res; \
1821 res; \
1822 })
1823
1824#endif
1825
1826#ifdef ev_syscall
1827 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1828 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1829 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1830 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1831 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1832 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1833 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1834#else
1835 #define ev_syscall0(nr) syscall (nr)
1836 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1837 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1838 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1839 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1840 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1841 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1842#endif
1843
1844#endif
1845
1846/*****************************************************************************/
1017 1847
1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1848#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1019 1849
1020#if EV_MINPRI == EV_MAXPRI 1850#if EV_MINPRI == EV_MAXPRI
1021# define ABSPRI(w) (((W)w), 0) 1851# define ABSPRI(w) (((W)w), 0)
1022#else 1852#else
1023# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1853# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1024#endif 1854#endif
1025 1855
1026#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1856#define EMPTY /* required for microsofts broken pseudo-c compiler */
1027#define EMPTY2(a,b) /* used to suppress some warnings */
1028 1857
1029typedef ev_watcher *W; 1858typedef ev_watcher *W;
1030typedef ev_watcher_list *WL; 1859typedef ev_watcher_list *WL;
1031typedef ev_watcher_time *WT; 1860typedef ev_watcher_time *WT;
1032 1861
… …
1057# include "ev_win32.c" 1886# include "ev_win32.c"
1058#endif 1887#endif
1059 1888
1060/*****************************************************************************/ 1889/*****************************************************************************/
1061 1890
1891#if EV_USE_LINUXAIO
1892# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1893#endif
1894
1062/* define a suitable floor function (only used by periodics atm) */ 1895/* define a suitable floor function (only used by periodics atm) */
1063 1896
1064#if EV_USE_FLOOR 1897#if EV_USE_FLOOR
1065# include <math.h> 1898# include <math.h>
1066# define ev_floor(v) floor (v) 1899# define ev_floor(v) floor (v)
1067#else 1900#else
1068 1901
1069#include <float.h> 1902#include <float.h>
1070 1903
1071/* a floor() replacement function, should be independent of ev_tstamp type */ 1904/* a floor() replacement function, should be independent of ev_tstamp type */
1905ecb_noinline
1072static ev_tstamp noinline 1906static ev_tstamp
1073ev_floor (ev_tstamp v) 1907ev_floor (ev_tstamp v)
1074{ 1908{
1075 /* the choice of shift factor is not terribly important */ 1909 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1910#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1911 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else 1912#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1913 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif 1914#endif
1081 1915
1916 /* special treatment for negative arguments */
1917 if (ecb_expect_false (v < 0.))
1918 {
1919 ev_tstamp f = -ev_floor (-v);
1920
1921 return f - (f == v ? 0 : 1);
1922 }
1923
1082 /* argument too large for an unsigned long? */ 1924 /* argument too large for an unsigned long? then reduce it */
1083 if (expect_false (v >= shift)) 1925 if (ecb_expect_false (v >= shift))
1084 { 1926 {
1085 ev_tstamp f; 1927 ev_tstamp f;
1086 1928
1087 if (v == v - 1.) 1929 if (v == v - 1.)
1088 return v; /* very large number */ 1930 return v; /* very large numbers are assumed to be integer */
1089 1931
1090 f = shift * ev_floor (v * (1. / shift)); 1932 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f); 1933 return f + ev_floor (v - f);
1092 } 1934 }
1093 1935
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */ 1936 /* fits into an unsigned long */
1103 return (unsigned long)v; 1937 return (unsigned long)v;
1104} 1938}
1105 1939
1106#endif 1940#endif
… …
1109 1943
1110#ifdef __linux 1944#ifdef __linux
1111# include <sys/utsname.h> 1945# include <sys/utsname.h>
1112#endif 1946#endif
1113 1947
1114static unsigned int noinline ecb_cold 1948ecb_noinline ecb_cold
1949static unsigned int
1115ev_linux_version (void) 1950ev_linux_version (void)
1116{ 1951{
1117#ifdef __linux 1952#ifdef __linux
1118 unsigned int v = 0; 1953 unsigned int v = 0;
1119 struct utsname buf; 1954 struct utsname buf;
… …
1148} 1983}
1149 1984
1150/*****************************************************************************/ 1985/*****************************************************************************/
1151 1986
1152#if EV_AVOID_STDIO 1987#if EV_AVOID_STDIO
1153static void noinline ecb_cold 1988ecb_noinline ecb_cold
1989static void
1154ev_printerr (const char *msg) 1990ev_printerr (const char *msg)
1155{ 1991{
1156 write (STDERR_FILENO, msg, strlen (msg)); 1992 write (STDERR_FILENO, msg, strlen (msg));
1157} 1993}
1158#endif 1994#endif
1159 1995
1160static void (*syserr_cb)(const char *msg) EV_THROW; 1996static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1161 1997
1162void ecb_cold 1998ecb_cold
1999void
1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 2000ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1164{ 2001{
1165 syserr_cb = cb; 2002 syserr_cb = cb;
1166} 2003}
1167 2004
1168static void noinline ecb_cold 2005ecb_noinline ecb_cold
2006static void
1169ev_syserr (const char *msg) 2007ev_syserr (const char *msg)
1170{ 2008{
1171 if (!msg) 2009 if (!msg)
1172 msg = "(libev) system error"; 2010 msg = "(libev) system error";
1173 2011
… …
1186 abort (); 2024 abort ();
1187 } 2025 }
1188} 2026}
1189 2027
1190static void * 2028static void *
1191ev_realloc_emul (void *ptr, long size) EV_THROW 2029ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1192{ 2030{
1193#if __GLIBC__
1194 return realloc (ptr, size);
1195#else
1196 /* some systems, notably openbsd and darwin, fail to properly 2031 /* some systems, notably openbsd and darwin, fail to properly
1197 * implement realloc (x, 0) (as required by both ansi c-89 and 2032 * implement realloc (x, 0) (as required by both ansi c-89 and
1198 * the single unix specification, so work around them here. 2033 * the single unix specification, so work around them here.
2034 * recently, also (at least) fedora and debian started breaking it,
2035 * despite documenting it otherwise.
1199 */ 2036 */
1200 2037
1201 if (size) 2038 if (size)
1202 return realloc (ptr, size); 2039 return realloc (ptr, size);
1203 2040
1204 free (ptr); 2041 free (ptr);
1205 return 0; 2042 return 0;
1206#endif
1207} 2043}
1208 2044
1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2045static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1210 2046
1211void ecb_cold 2047ecb_cold
2048void
1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 2049ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1213{ 2050{
1214 alloc = cb; 2051 alloc = cb;
1215} 2052}
1216 2053
1217inline_speed void * 2054inline_speed void *
… …
1244typedef struct 2081typedef struct
1245{ 2082{
1246 WL head; 2083 WL head;
1247 unsigned char events; /* the events watched for */ 2084 unsigned char events; /* the events watched for */
1248 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2085 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1249 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2086 unsigned char emask; /* some backends store the actual kernel mask in here */
1250 unsigned char unused; 2087 unsigned char eflags; /* flags field for use by backends */
1251#if EV_USE_EPOLL 2088#if EV_USE_EPOLL
1252 unsigned int egen; /* generation counter to counter epoll bugs */ 2089 unsigned int egen; /* generation counter to counter epoll bugs */
1253#endif 2090#endif
1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2091#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1255 SOCKET handle; 2092 SOCKET handle;
… …
1309 static struct ev_loop default_loop_struct; 2146 static struct ev_loop default_loop_struct;
1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1311 2148
1312#else 2149#else
1313 2150
1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2151 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1315 #define VAR(name,decl) static decl; 2152 #define VAR(name,decl) static decl;
1316 #include "ev_vars.h" 2153 #include "ev_vars.h"
1317 #undef VAR 2154 #undef VAR
1318 2155
1319 static int ev_default_loop_ptr; 2156 static int ev_default_loop_ptr;
1320 2157
1321#endif 2158#endif
1322 2159
1323#if EV_FEATURE_API 2160#if EV_FEATURE_API
1324# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2161# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1325# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2162# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1326# define EV_INVOKE_PENDING invoke_cb (EV_A) 2163# define EV_INVOKE_PENDING invoke_cb (EV_A)
1327#else 2164#else
1328# define EV_RELEASE_CB (void)0 2165# define EV_RELEASE_CB (void)0
1329# define EV_ACQUIRE_CB (void)0 2166# define EV_ACQUIRE_CB (void)0
1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2167# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1334 2171
1335/*****************************************************************************/ 2172/*****************************************************************************/
1336 2173
1337#ifndef EV_HAVE_EV_TIME 2174#ifndef EV_HAVE_EV_TIME
1338ev_tstamp 2175ev_tstamp
1339ev_time (void) EV_THROW 2176ev_time (void) EV_NOEXCEPT
1340{ 2177{
1341#if EV_USE_REALTIME 2178#if EV_USE_REALTIME
1342 if (expect_true (have_realtime)) 2179 if (ecb_expect_true (have_realtime))
1343 { 2180 {
1344 struct timespec ts; 2181 struct timespec ts;
1345 clock_gettime (CLOCK_REALTIME, &ts); 2182 clock_gettime (CLOCK_REALTIME, &ts);
1346 return ts.tv_sec + ts.tv_nsec * 1e-9; 2183 return EV_TS_GET (ts);
1347 } 2184 }
1348#endif 2185#endif
1349 2186
2187 {
1350 struct timeval tv; 2188 struct timeval tv;
1351 gettimeofday (&tv, 0); 2189 gettimeofday (&tv, 0);
1352 return tv.tv_sec + tv.tv_usec * 1e-6; 2190 return EV_TV_GET (tv);
2191 }
1353} 2192}
1354#endif 2193#endif
1355 2194
1356inline_size ev_tstamp 2195inline_size ev_tstamp
1357get_clock (void) 2196get_clock (void)
1358{ 2197{
1359#if EV_USE_MONOTONIC 2198#if EV_USE_MONOTONIC
1360 if (expect_true (have_monotonic)) 2199 if (ecb_expect_true (have_monotonic))
1361 { 2200 {
1362 struct timespec ts; 2201 struct timespec ts;
1363 clock_gettime (CLOCK_MONOTONIC, &ts); 2202 clock_gettime (CLOCK_MONOTONIC, &ts);
1364 return ts.tv_sec + ts.tv_nsec * 1e-9; 2203 return EV_TS_GET (ts);
1365 } 2204 }
1366#endif 2205#endif
1367 2206
1368 return ev_time (); 2207 return ev_time ();
1369} 2208}
1370 2209
1371#if EV_MULTIPLICITY 2210#if EV_MULTIPLICITY
1372ev_tstamp 2211ev_tstamp
1373ev_now (EV_P) EV_THROW 2212ev_now (EV_P) EV_NOEXCEPT
1374{ 2213{
1375 return ev_rt_now; 2214 return ev_rt_now;
1376} 2215}
1377#endif 2216#endif
1378 2217
1379void 2218void
1380ev_sleep (ev_tstamp delay) EV_THROW 2219ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1381{ 2220{
1382 if (delay > 0.) 2221 if (delay > EV_TS_CONST (0.))
1383 { 2222 {
1384#if EV_USE_NANOSLEEP 2223#if EV_USE_NANOSLEEP
1385 struct timespec ts; 2224 struct timespec ts;
1386 2225
1387 EV_TS_SET (ts, delay); 2226 EV_TS_SET (ts, delay);
1388 nanosleep (&ts, 0); 2227 nanosleep (&ts, 0);
1389#elif defined _WIN32 2228#elif defined _WIN32
2229 /* maybe this should round up, as ms is very low resolution */
2230 /* compared to select (µs) or nanosleep (ns) */
1390 Sleep ((unsigned long)(delay * 1e3)); 2231 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1391#else 2232#else
1392 struct timeval tv; 2233 struct timeval tv;
1393 2234
1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2235 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1395 /* something not guaranteed by newer posix versions, but guaranteed */ 2236 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1425 } 2266 }
1426 2267
1427 return ncur; 2268 return ncur;
1428} 2269}
1429 2270
1430static void * noinline ecb_cold 2271ecb_noinline ecb_cold
2272static void *
1431array_realloc (int elem, void *base, int *cur, int cnt) 2273array_realloc (int elem, void *base, int *cur, int cnt)
1432{ 2274{
1433 *cur = array_nextsize (elem, *cur, cnt); 2275 *cur = array_nextsize (elem, *cur, cnt);
1434 return ev_realloc (base, elem * *cur); 2276 return ev_realloc (base, elem * *cur);
1435} 2277}
1436 2278
2279#define array_needsize_noinit(base,offset,count)
2280
1437#define array_init_zero(base,count) \ 2281#define array_needsize_zerofill(base,offset,count) \
1438 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2282 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1439 2283
1440#define array_needsize(type,base,cur,cnt,init) \ 2284#define array_needsize(type,base,cur,cnt,init) \
1441 if (expect_false ((cnt) > (cur))) \ 2285 if (ecb_expect_false ((cnt) > (cur))) \
1442 { \ 2286 { \
1443 int ecb_unused ocur_ = (cur); \ 2287 ecb_unused int ocur_ = (cur); \
1444 (base) = (type *)array_realloc \ 2288 (base) = (type *)array_realloc \
1445 (sizeof (type), (base), &(cur), (cnt)); \ 2289 (sizeof (type), (base), &(cur), (cnt)); \
1446 init ((base) + (ocur_), (cur) - ocur_); \ 2290 init ((base), ocur_, ((cur) - ocur_)); \
1447 } 2291 }
1448 2292
1449#if 0 2293#if 0
1450#define array_slim(type,stem) \ 2294#define array_slim(type,stem) \
1451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2295 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2304 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1461 2305
1462/*****************************************************************************/ 2306/*****************************************************************************/
1463 2307
1464/* dummy callback for pending events */ 2308/* dummy callback for pending events */
1465static void noinline 2309ecb_noinline
2310static void
1466pendingcb (EV_P_ ev_prepare *w, int revents) 2311pendingcb (EV_P_ ev_prepare *w, int revents)
1467{ 2312{
1468} 2313}
1469 2314
1470void noinline 2315ecb_noinline
2316void
1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2317ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1472{ 2318{
1473 W w_ = (W)w; 2319 W w_ = (W)w;
1474 int pri = ABSPRI (w_); 2320 int pri = ABSPRI (w_);
1475 2321
1476 if (expect_false (w_->pending)) 2322 if (ecb_expect_false (w_->pending))
1477 pendings [pri][w_->pending - 1].events |= revents; 2323 pendings [pri][w_->pending - 1].events |= revents;
1478 else 2324 else
1479 { 2325 {
1480 w_->pending = ++pendingcnt [pri]; 2326 w_->pending = ++pendingcnt [pri];
1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2327 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1482 pendings [pri][w_->pending - 1].w = w_; 2328 pendings [pri][w_->pending - 1].w = w_;
1483 pendings [pri][w_->pending - 1].events = revents; 2329 pendings [pri][w_->pending - 1].events = revents;
1484 } 2330 }
1485 2331
1486 pendingpri = NUMPRI - 1; 2332 pendingpri = NUMPRI - 1;
1487} 2333}
1488 2334
1489inline_speed void 2335inline_speed void
1490feed_reverse (EV_P_ W w) 2336feed_reverse (EV_P_ W w)
1491{ 2337{
1492 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2338 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1493 rfeeds [rfeedcnt++] = w; 2339 rfeeds [rfeedcnt++] = w;
1494} 2340}
1495 2341
1496inline_size void 2342inline_size void
1497feed_reverse_done (EV_P_ int revents) 2343feed_reverse_done (EV_P_ int revents)
… …
1532inline_speed void 2378inline_speed void
1533fd_event (EV_P_ int fd, int revents) 2379fd_event (EV_P_ int fd, int revents)
1534{ 2380{
1535 ANFD *anfd = anfds + fd; 2381 ANFD *anfd = anfds + fd;
1536 2382
1537 if (expect_true (!anfd->reify)) 2383 if (ecb_expect_true (!anfd->reify))
1538 fd_event_nocheck (EV_A_ fd, revents); 2384 fd_event_nocheck (EV_A_ fd, revents);
1539} 2385}
1540 2386
1541void 2387void
1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2388ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1543{ 2389{
1544 if (fd >= 0 && fd < anfdmax) 2390 if (fd >= 0 && fd < anfdmax)
1545 fd_event_nocheck (EV_A_ fd, revents); 2391 fd_event_nocheck (EV_A_ fd, revents);
1546} 2392}
1547 2393
… …
1550inline_size void 2396inline_size void
1551fd_reify (EV_P) 2397fd_reify (EV_P)
1552{ 2398{
1553 int i; 2399 int i;
1554 2400
2401 /* most backends do not modify the fdchanges list in backend_modify.
2402 * except io_uring, which has fixed-size buffers which might force us
2403 * to handle events in backend_modify, causing fdchanges to be amended,
2404 * which could result in an endless loop.
2405 * to avoid this, we do not dynamically handle fds that were added
2406 * during fd_reify. that means that for those backends, fdchangecnt
2407 * might be non-zero during poll, which must cause them to not block.
2408 * to not put too much of a burden on other backends, this detail
2409 * needs to be handled in the backend.
2410 */
2411 int changecnt = fdchangecnt;
2412
1555#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2413#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1556 for (i = 0; i < fdchangecnt; ++i) 2414 for (i = 0; i < changecnt; ++i)
1557 { 2415 {
1558 int fd = fdchanges [i]; 2416 int fd = fdchanges [i];
1559 ANFD *anfd = anfds + fd; 2417 ANFD *anfd = anfds + fd;
1560 2418
1561 if (anfd->reify & EV__IOFDSET && anfd->head) 2419 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1575 } 2433 }
1576 } 2434 }
1577 } 2435 }
1578#endif 2436#endif
1579 2437
1580 for (i = 0; i < fdchangecnt; ++i) 2438 for (i = 0; i < changecnt; ++i)
1581 { 2439 {
1582 int fd = fdchanges [i]; 2440 int fd = fdchanges [i];
1583 ANFD *anfd = anfds + fd; 2441 ANFD *anfd = anfds + fd;
1584 ev_io *w; 2442 ev_io *w;
1585 2443
1586 unsigned char o_events = anfd->events; 2444 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify; 2445 unsigned char o_reify = anfd->reify;
1588 2446
1589 anfd->reify = 0; 2447 anfd->reify = 0;
1590 2448
1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2449 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1592 { 2450 {
1593 anfd->events = 0; 2451 anfd->events = 0;
1594 2452
1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1596 anfd->events |= (unsigned char)w->events; 2454 anfd->events |= (unsigned char)w->events;
… …
1601 2459
1602 if (o_reify & EV__IOFDSET) 2460 if (o_reify & EV__IOFDSET)
1603 backend_modify (EV_A_ fd, o_events, anfd->events); 2461 backend_modify (EV_A_ fd, o_events, anfd->events);
1604 } 2462 }
1605 2463
2464 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2465 * this is a rare case (see beginning comment in this function), so we copy them to the
2466 * front and hope the backend handles this case.
2467 */
2468 if (ecb_expect_false (fdchangecnt != changecnt))
2469 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2470
1606 fdchangecnt = 0; 2471 fdchangecnt -= changecnt;
1607} 2472}
1608 2473
1609/* something about the given fd changed */ 2474/* something about the given fd changed */
1610inline_size void 2475inline_size
2476void
1611fd_change (EV_P_ int fd, int flags) 2477fd_change (EV_P_ int fd, int flags)
1612{ 2478{
1613 unsigned char reify = anfds [fd].reify; 2479 unsigned char reify = anfds [fd].reify;
1614 anfds [fd].reify |= flags; 2480 anfds [fd].reify = reify | flags;
1615 2481
1616 if (expect_true (!reify)) 2482 if (ecb_expect_true (!reify))
1617 { 2483 {
1618 ++fdchangecnt; 2484 ++fdchangecnt;
1619 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1620 fdchanges [fdchangecnt - 1] = fd; 2486 fdchanges [fdchangecnt - 1] = fd;
1621 } 2487 }
1622} 2488}
1623 2489
1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1625inline_speed void ecb_cold 2491inline_speed ecb_cold void
1626fd_kill (EV_P_ int fd) 2492fd_kill (EV_P_ int fd)
1627{ 2493{
1628 ev_io *w; 2494 ev_io *w;
1629 2495
1630 while ((w = (ev_io *)anfds [fd].head)) 2496 while ((w = (ev_io *)anfds [fd].head))
… …
1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1634 } 2500 }
1635} 2501}
1636 2502
1637/* check whether the given fd is actually valid, for error recovery */ 2503/* check whether the given fd is actually valid, for error recovery */
1638inline_size int ecb_cold 2504inline_size ecb_cold int
1639fd_valid (int fd) 2505fd_valid (int fd)
1640{ 2506{
1641#ifdef _WIN32 2507#ifdef _WIN32
1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1643#else 2509#else
1644 return fcntl (fd, F_GETFD) != -1; 2510 return fcntl (fd, F_GETFD) != -1;
1645#endif 2511#endif
1646} 2512}
1647 2513
1648/* called on EBADF to verify fds */ 2514/* called on EBADF to verify fds */
1649static void noinline ecb_cold 2515ecb_noinline ecb_cold
2516static void
1650fd_ebadf (EV_P) 2517fd_ebadf (EV_P)
1651{ 2518{
1652 int fd; 2519 int fd;
1653 2520
1654 for (fd = 0; fd < anfdmax; ++fd) 2521 for (fd = 0; fd < anfdmax; ++fd)
… …
1656 if (!fd_valid (fd) && errno == EBADF) 2523 if (!fd_valid (fd) && errno == EBADF)
1657 fd_kill (EV_A_ fd); 2524 fd_kill (EV_A_ fd);
1658} 2525}
1659 2526
1660/* called on ENOMEM in select/poll to kill some fds and retry */ 2527/* called on ENOMEM in select/poll to kill some fds and retry */
1661static void noinline ecb_cold 2528ecb_noinline ecb_cold
2529static void
1662fd_enomem (EV_P) 2530fd_enomem (EV_P)
1663{ 2531{
1664 int fd; 2532 int fd;
1665 2533
1666 for (fd = anfdmax; fd--; ) 2534 for (fd = anfdmax; fd--; )
… …
1670 break; 2538 break;
1671 } 2539 }
1672} 2540}
1673 2541
1674/* usually called after fork if backend needs to re-arm all fds from scratch */ 2542/* usually called after fork if backend needs to re-arm all fds from scratch */
1675static void noinline 2543ecb_noinline
2544static void
1676fd_rearm_all (EV_P) 2545fd_rearm_all (EV_P)
1677{ 2546{
1678 int fd; 2547 int fd;
1679 2548
1680 for (fd = 0; fd < anfdmax; ++fd) 2549 for (fd = 0; fd < anfdmax; ++fd)
… …
1733 ev_tstamp minat; 2602 ev_tstamp minat;
1734 ANHE *minpos; 2603 ANHE *minpos;
1735 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2604 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1736 2605
1737 /* find minimum child */ 2606 /* find minimum child */
1738 if (expect_true (pos + DHEAP - 1 < E)) 2607 if (ecb_expect_true (pos + DHEAP - 1 < E))
1739 { 2608 {
1740 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2609 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1741 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2610 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1742 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2611 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1743 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2612 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1744 } 2613 }
1745 else if (pos < E) 2614 else if (pos < E)
1746 { 2615 {
1747 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2616 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1748 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2617 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1749 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2618 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1750 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2619 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1751 } 2620 }
1752 else 2621 else
1753 break; 2622 break;
1754 2623
1755 if (ANHE_at (he) <= minat) 2624 if (ANHE_at (he) <= minat)
… …
1763 2632
1764 heap [k] = he; 2633 heap [k] = he;
1765 ev_active (ANHE_w (he)) = k; 2634 ev_active (ANHE_w (he)) = k;
1766} 2635}
1767 2636
1768#else /* 4HEAP */ 2637#else /* not 4HEAP */
1769 2638
1770#define HEAP0 1 2639#define HEAP0 1
1771#define HPARENT(k) ((k) >> 1) 2640#define HPARENT(k) ((k) >> 1)
1772#define UPHEAP_DONE(p,k) (!(p)) 2641#define UPHEAP_DONE(p,k) (!(p))
1773 2642
… …
1845 upheap (heap, i + HEAP0); 2714 upheap (heap, i + HEAP0);
1846} 2715}
1847 2716
1848/*****************************************************************************/ 2717/*****************************************************************************/
1849 2718
1850/* associate signal watchers to a signal signal */ 2719/* associate signal watchers to a signal */
1851typedef struct 2720typedef struct
1852{ 2721{
1853 EV_ATOMIC_T pending; 2722 EV_ATOMIC_T pending;
1854#if EV_MULTIPLICITY 2723#if EV_MULTIPLICITY
1855 EV_P; 2724 EV_P;
… …
1861 2730
1862/*****************************************************************************/ 2731/*****************************************************************************/
1863 2732
1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2733#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1865 2734
1866static void noinline ecb_cold 2735ecb_noinline ecb_cold
2736static void
1867evpipe_init (EV_P) 2737evpipe_init (EV_P)
1868{ 2738{
1869 if (!ev_is_active (&pipe_w)) 2739 if (!ev_is_active (&pipe_w))
1870 { 2740 {
2741 int fds [2];
2742
1871# if EV_USE_EVENTFD 2743# if EV_USE_EVENTFD
2744 fds [0] = -1;
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2745 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL) 2746 if (fds [1] < 0 && errno == EINVAL)
1874 evfd = eventfd (0, 0); 2747 fds [1] = eventfd (0, 0);
1875 2748
1876 if (evfd >= 0) 2749 if (fds [1] < 0)
1877 {
1878 evpipe [0] = -1;
1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1880 ev_io_set (&pipe_w, evfd, EV_READ);
1881 }
1882 else
1883# endif 2750# endif
1884 { 2751 {
1885 while (pipe (evpipe)) 2752 while (pipe (fds))
1886 ev_syserr ("(libev) error creating signal/async pipe"); 2753 ev_syserr ("(libev) error creating signal/async pipe");
1887 2754
1888 fd_intern (evpipe [0]); 2755 fd_intern (fds [0]);
1889 fd_intern (evpipe [1]);
1890 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1891 } 2756 }
1892 2757
2758 evpipe [0] = fds [0];
2759
2760 if (evpipe [1] < 0)
2761 evpipe [1] = fds [1]; /* first call, set write fd */
2762 else
2763 {
2764 /* on subsequent calls, do not change evpipe [1] */
2765 /* so that evpipe_write can always rely on its value. */
2766 /* this branch does not do anything sensible on windows, */
2767 /* so must not be executed on windows */
2768
2769 dup2 (fds [1], evpipe [1]);
2770 close (fds [1]);
2771 }
2772
2773 fd_intern (evpipe [1]);
2774
2775 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1893 ev_io_start (EV_A_ &pipe_w); 2776 ev_io_start (EV_A_ &pipe_w);
1894 ev_unref (EV_A); /* watcher should not keep loop alive */ 2777 ev_unref (EV_A); /* watcher should not keep loop alive */
1895 } 2778 }
1896} 2779}
1897 2780
1898inline_speed void 2781inline_speed void
1899evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2782evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1900{ 2783{
1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2784 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902 2785
1903 if (expect_true (*flag)) 2786 if (ecb_expect_true (*flag))
1904 return; 2787 return;
1905 2788
1906 *flag = 1; 2789 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2790 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908 2791
… …
1918 ECB_MEMORY_FENCE_RELEASE; 2801 ECB_MEMORY_FENCE_RELEASE;
1919 2802
1920 old_errno = errno; /* save errno because write will clobber it */ 2803 old_errno = errno; /* save errno because write will clobber it */
1921 2804
1922#if EV_USE_EVENTFD 2805#if EV_USE_EVENTFD
1923 if (evfd >= 0) 2806 if (evpipe [0] < 0)
1924 { 2807 {
1925 uint64_t counter = 1; 2808 uint64_t counter = 1;
1926 write (evfd, &counter, sizeof (uint64_t)); 2809 write (evpipe [1], &counter, sizeof (uint64_t));
1927 } 2810 }
1928 else 2811 else
1929#endif 2812#endif
1930 { 2813 {
1931#ifdef _WIN32 2814#ifdef _WIN32
1932 WSABUF buf; 2815 WSABUF buf;
1933 DWORD sent; 2816 DWORD sent;
1934 buf.buf = &buf; 2817 buf.buf = (char *)&buf;
1935 buf.len = 1; 2818 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2819 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else 2820#else
1938 write (evpipe [1], &(evpipe [1]), 1); 2821 write (evpipe [1], &(evpipe [1]), 1);
1939#endif 2822#endif
… …
1951 int i; 2834 int i;
1952 2835
1953 if (revents & EV_READ) 2836 if (revents & EV_READ)
1954 { 2837 {
1955#if EV_USE_EVENTFD 2838#if EV_USE_EVENTFD
1956 if (evfd >= 0) 2839 if (evpipe [0] < 0)
1957 { 2840 {
1958 uint64_t counter; 2841 uint64_t counter;
1959 read (evfd, &counter, sizeof (uint64_t)); 2842 read (evpipe [1], &counter, sizeof (uint64_t));
1960 } 2843 }
1961 else 2844 else
1962#endif 2845#endif
1963 { 2846 {
1964 char dummy[4]; 2847 char dummy[4];
… …
1985 sig_pending = 0; 2868 sig_pending = 0;
1986 2869
1987 ECB_MEMORY_FENCE; 2870 ECB_MEMORY_FENCE;
1988 2871
1989 for (i = EV_NSIG - 1; i--; ) 2872 for (i = EV_NSIG - 1; i--; )
1990 if (expect_false (signals [i].pending)) 2873 if (ecb_expect_false (signals [i].pending))
1991 ev_feed_signal_event (EV_A_ i + 1); 2874 ev_feed_signal_event (EV_A_ i + 1);
1992 } 2875 }
1993#endif 2876#endif
1994 2877
1995#if EV_ASYNC_ENABLE 2878#if EV_ASYNC_ENABLE
… …
2011} 2894}
2012 2895
2013/*****************************************************************************/ 2896/*****************************************************************************/
2014 2897
2015void 2898void
2016ev_feed_signal (int signum) EV_THROW 2899ev_feed_signal (int signum) EV_NOEXCEPT
2017{ 2900{
2018#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
2902 EV_P;
2903 ECB_MEMORY_FENCE_ACQUIRE;
2019 EV_P = signals [signum - 1].loop; 2904 EV_A = signals [signum - 1].loop;
2020 2905
2021 if (!EV_A) 2906 if (!EV_A)
2022 return; 2907 return;
2023#endif 2908#endif
2024 2909
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1; 2910 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending); 2911 evpipe_write (EV_A_ &sig_pending);
2030} 2912}
2031 2913
2032static void 2914static void
… …
2037#endif 2919#endif
2038 2920
2039 ev_feed_signal (signum); 2921 ev_feed_signal (signum);
2040} 2922}
2041 2923
2042void noinline 2924ecb_noinline
2925void
2043ev_feed_signal_event (EV_P_ int signum) EV_THROW 2926ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2044{ 2927{
2045 WL w; 2928 WL w;
2046 2929
2047 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2930 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2048 return; 2931 return;
2049 2932
2050 --signum; 2933 --signum;
2051 2934
2052#if EV_MULTIPLICITY 2935#if EV_MULTIPLICITY
2053 /* it is permissible to try to feed a signal to the wrong loop */ 2936 /* it is permissible to try to feed a signal to the wrong loop */
2054 /* or, likely more useful, feeding a signal nobody is waiting for */ 2937 /* or, likely more useful, feeding a signal nobody is waiting for */
2055 2938
2056 if (expect_false (signals [signum].loop != EV_A)) 2939 if (ecb_expect_false (signals [signum].loop != EV_A))
2057 return; 2940 return;
2058#endif 2941#endif
2059 2942
2060 signals [signum].pending = 0; 2943 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE; 2944 ECB_MEMORY_FENCE_RELEASE;
… …
2145 3028
2146#endif 3029#endif
2147 3030
2148/*****************************************************************************/ 3031/*****************************************************************************/
2149 3032
3033#if EV_USE_TIMERFD
3034
3035static void periodics_reschedule (EV_P);
3036
3037static void
3038timerfdcb (EV_P_ ev_io *iow, int revents)
3039{
3040 struct itimerspec its = { 0 };
3041
3042 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3043 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3044
3045 ev_rt_now = ev_time ();
3046 /* periodics_reschedule only needs ev_rt_now */
3047 /* but maybe in the future we want the full treatment. */
3048 /*
3049 now_floor = EV_TS_CONST (0.);
3050 time_update (EV_A_ EV_TSTAMP_HUGE);
3051 */
3052#if EV_PERIODIC_ENABLE
3053 periodics_reschedule (EV_A);
3054#endif
3055}
3056
3057ecb_noinline ecb_cold
3058static void
3059evtimerfd_init (EV_P)
3060{
3061 if (!ev_is_active (&timerfd_w))
3062 {
3063 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3064
3065 if (timerfd >= 0)
3066 {
3067 fd_intern (timerfd); /* just to be sure */
3068
3069 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3070 ev_set_priority (&timerfd_w, EV_MINPRI);
3071 ev_io_start (EV_A_ &timerfd_w);
3072 ev_unref (EV_A); /* watcher should not keep loop alive */
3073
3074 /* (re-) arm timer */
3075 timerfdcb (EV_A_ 0, 0);
3076 }
3077 }
3078}
3079
3080#endif
3081
3082/*****************************************************************************/
3083
2150#if EV_USE_IOCP 3084#if EV_USE_IOCP
2151# include "ev_iocp.c" 3085# include "ev_iocp.c"
2152#endif 3086#endif
2153#if EV_USE_PORT 3087#if EV_USE_PORT
2154# include "ev_port.c" 3088# include "ev_port.c"
… …
2157# include "ev_kqueue.c" 3091# include "ev_kqueue.c"
2158#endif 3092#endif
2159#if EV_USE_EPOLL 3093#if EV_USE_EPOLL
2160# include "ev_epoll.c" 3094# include "ev_epoll.c"
2161#endif 3095#endif
3096#if EV_USE_LINUXAIO
3097# include "ev_linuxaio.c"
3098#endif
3099#if EV_USE_IOURING
3100# include "ev_iouring.c"
3101#endif
2162#if EV_USE_POLL 3102#if EV_USE_POLL
2163# include "ev_poll.c" 3103# include "ev_poll.c"
2164#endif 3104#endif
2165#if EV_USE_SELECT 3105#if EV_USE_SELECT
2166# include "ev_select.c" 3106# include "ev_select.c"
2167#endif 3107#endif
2168 3108
2169int ecb_cold 3109ecb_cold int
2170ev_version_major (void) EV_THROW 3110ev_version_major (void) EV_NOEXCEPT
2171{ 3111{
2172 return EV_VERSION_MAJOR; 3112 return EV_VERSION_MAJOR;
2173} 3113}
2174 3114
2175int ecb_cold 3115ecb_cold int
2176ev_version_minor (void) EV_THROW 3116ev_version_minor (void) EV_NOEXCEPT
2177{ 3117{
2178 return EV_VERSION_MINOR; 3118 return EV_VERSION_MINOR;
2179} 3119}
2180 3120
2181/* return true if we are running with elevated privileges and should ignore env variables */ 3121/* return true if we are running with elevated privileges and should ignore env variables */
2182int inline_size ecb_cold 3122inline_size ecb_cold int
2183enable_secure (void) 3123enable_secure (void)
2184{ 3124{
2185#ifdef _WIN32 3125#ifdef _WIN32
2186 return 0; 3126 return 0;
2187#else 3127#else
2188 return getuid () != geteuid () 3128 return getuid () != geteuid ()
2189 || getgid () != getegid (); 3129 || getgid () != getegid ();
2190#endif 3130#endif
2191} 3131}
2192 3132
2193unsigned int ecb_cold 3133ecb_cold
3134unsigned int
2194ev_supported_backends (void) EV_THROW 3135ev_supported_backends (void) EV_NOEXCEPT
2195{ 3136{
2196 unsigned int flags = 0; 3137 unsigned int flags = 0;
2197 3138
2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3139 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3140 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2200 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3141 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2201 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3142 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3143 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2203 3144 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3145 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3146
2204 return flags; 3147 return flags;
2205} 3148}
2206 3149
2207unsigned int ecb_cold 3150ecb_cold
3151unsigned int
2208ev_recommended_backends (void) EV_THROW 3152ev_recommended_backends (void) EV_NOEXCEPT
2209{ 3153{
2210 unsigned int flags = ev_supported_backends (); 3154 unsigned int flags = ev_supported_backends ();
2211 3155
2212#ifndef __NetBSD__ 3156#ifndef __NetBSD__
2213 /* kqueue is borked on everything but netbsd apparently */ 3157 /* kqueue is borked on everything but netbsd apparently */
… …
2221#endif 3165#endif
2222#ifdef __FreeBSD__ 3166#ifdef __FreeBSD__
2223 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2224#endif 3168#endif
2225 3169
3170 /* TODO: linuxaio is very experimental */
3171#if !EV_RECOMMEND_LINUXAIO
3172 flags &= ~EVBACKEND_LINUXAIO;
3173#endif
3174 /* TODO: iouring is super experimental */
3175#if !EV_RECOMMEND_IOURING
3176 flags &= ~EVBACKEND_IOURING;
3177#endif
3178
2226 return flags; 3179 return flags;
2227} 3180}
2228 3181
2229unsigned int ecb_cold 3182ecb_cold
3183unsigned int
2230ev_embeddable_backends (void) EV_THROW 3184ev_embeddable_backends (void) EV_NOEXCEPT
2231{ 3185{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3186 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2233 3187
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3188 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3189 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL; 3190 flags &= ~EVBACKEND_EPOLL;
2237 3191
3192 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3193
2238 return flags; 3194 return flags;
2239} 3195}
2240 3196
2241unsigned int 3197unsigned int
2242ev_backend (EV_P) EV_THROW 3198ev_backend (EV_P) EV_NOEXCEPT
2243{ 3199{
2244 return backend; 3200 return backend;
2245} 3201}
2246 3202
2247#if EV_FEATURE_API 3203#if EV_FEATURE_API
2248unsigned int 3204unsigned int
2249ev_iteration (EV_P) EV_THROW 3205ev_iteration (EV_P) EV_NOEXCEPT
2250{ 3206{
2251 return loop_count; 3207 return loop_count;
2252} 3208}
2253 3209
2254unsigned int 3210unsigned int
2255ev_depth (EV_P) EV_THROW 3211ev_depth (EV_P) EV_NOEXCEPT
2256{ 3212{
2257 return loop_depth; 3213 return loop_depth;
2258} 3214}
2259 3215
2260void 3216void
2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2262{ 3218{
2263 io_blocktime = interval; 3219 io_blocktime = interval;
2264} 3220}
2265 3221
2266void 3222void
2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3223ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2268{ 3224{
2269 timeout_blocktime = interval; 3225 timeout_blocktime = interval;
2270} 3226}
2271 3227
2272void 3228void
2273ev_set_userdata (EV_P_ void *data) EV_THROW 3229ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2274{ 3230{
2275 userdata = data; 3231 userdata = data;
2276} 3232}
2277 3233
2278void * 3234void *
2279ev_userdata (EV_P) EV_THROW 3235ev_userdata (EV_P) EV_NOEXCEPT
2280{ 3236{
2281 return userdata; 3237 return userdata;
2282} 3238}
2283 3239
2284void 3240void
2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3241ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2286{ 3242{
2287 invoke_cb = invoke_pending_cb; 3243 invoke_cb = invoke_pending_cb;
2288} 3244}
2289 3245
2290void 3246void
2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3247ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2292{ 3248{
2293 release_cb = release; 3249 release_cb = release;
2294 acquire_cb = acquire; 3250 acquire_cb = acquire;
2295} 3251}
2296#endif 3252#endif
2297 3253
2298/* initialise a loop structure, must be zero-initialised */ 3254/* initialise a loop structure, must be zero-initialised */
2299static void noinline ecb_cold 3255ecb_noinline ecb_cold
3256static void
2300loop_init (EV_P_ unsigned int flags) EV_THROW 3257loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2301{ 3258{
2302 if (!backend) 3259 if (!backend)
2303 { 3260 {
2304 origflags = flags; 3261 origflags = flags;
2305 3262
… …
2350#if EV_ASYNC_ENABLE 3307#if EV_ASYNC_ENABLE
2351 async_pending = 0; 3308 async_pending = 0;
2352#endif 3309#endif
2353 pipe_write_skipped = 0; 3310 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0; 3311 pipe_write_wanted = 0;
3312 evpipe [0] = -1;
3313 evpipe [1] = -1;
2355#if EV_USE_INOTIFY 3314#if EV_USE_INOTIFY
2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3315 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2357#endif 3316#endif
2358#if EV_USE_SIGNALFD 3317#if EV_USE_SIGNALFD
2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3318 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2360#endif 3319#endif
3320#if EV_USE_TIMERFD
3321 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3322#endif
2361 3323
2362 if (!(flags & EVBACKEND_MASK)) 3324 if (!(flags & EVBACKEND_MASK))
2363 flags |= ev_recommended_backends (); 3325 flags |= ev_recommended_backends ();
2364 3326
2365#if EV_USE_IOCP 3327#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif 3329#endif
2368#if EV_USE_PORT 3330#if EV_USE_PORT
2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2370#endif 3332#endif
2371#if EV_USE_KQUEUE 3333#if EV_USE_KQUEUE
2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3334 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3335#endif
3336#if EV_USE_IOURING
3337 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3338#endif
3339#if EV_USE_LINUXAIO
3340 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2373#endif 3341#endif
2374#if EV_USE_EPOLL 3342#if EV_USE_EPOLL
2375 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2376#endif 3344#endif
2377#if EV_USE_POLL 3345#if EV_USE_POLL
2378 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3346 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2379#endif 3347#endif
2380#if EV_USE_SELECT 3348#if EV_USE_SELECT
2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3349 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2382#endif 3350#endif
2383 3351
2384 ev_prepare_init (&pending_w, pendingcb); 3352 ev_prepare_init (&pending_w, pendingcb);
2385 3353
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3354#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2389#endif 3357#endif
2390 } 3358 }
2391} 3359}
2392 3360
2393/* free up a loop structure */ 3361/* free up a loop structure */
2394void ecb_cold 3362ecb_cold
3363void
2395ev_loop_destroy (EV_P) 3364ev_loop_destroy (EV_P)
2396{ 3365{
2397 int i; 3366 int i;
2398 3367
2399#if EV_MULTIPLICITY 3368#if EV_MULTIPLICITY
… …
2402 return; 3371 return;
2403#endif 3372#endif
2404 3373
2405#if EV_CLEANUP_ENABLE 3374#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */ 3375 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt)) 3376 if (ecb_expect_false (cleanupcnt))
2408 { 3377 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3378 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING; 3379 EV_INVOKE_PENDING;
2411 } 3380 }
2412#endif 3381#endif
… …
2422 if (ev_is_active (&pipe_w)) 3391 if (ev_is_active (&pipe_w))
2423 { 3392 {
2424 /*ev_ref (EV_A);*/ 3393 /*ev_ref (EV_A);*/
2425 /*ev_io_stop (EV_A_ &pipe_w);*/ 3394 /*ev_io_stop (EV_A_ &pipe_w);*/
2426 3395
2427#if EV_USE_EVENTFD
2428 if (evfd >= 0)
2429 close (evfd);
2430#endif
2431
2432 if (evpipe [0] >= 0)
2433 {
2434 EV_WIN32_CLOSE_FD (evpipe [0]); 3396 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2435 EV_WIN32_CLOSE_FD (evpipe [1]); 3397 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2436 }
2437 } 3398 }
2438 3399
2439#if EV_USE_SIGNALFD 3400#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w)) 3401 if (ev_is_active (&sigfd_w))
2441 close (sigfd); 3402 close (sigfd);
2442#endif 3403#endif
2443 3404
3405#if EV_USE_TIMERFD
3406 if (ev_is_active (&timerfd_w))
3407 close (timerfd);
3408#endif
3409
2444#if EV_USE_INOTIFY 3410#if EV_USE_INOTIFY
2445 if (fs_fd >= 0) 3411 if (fs_fd >= 0)
2446 close (fs_fd); 3412 close (fs_fd);
2447#endif 3413#endif
2448 3414
2449 if (backend_fd >= 0) 3415 if (backend_fd >= 0)
2450 close (backend_fd); 3416 close (backend_fd);
2451 3417
2452#if EV_USE_IOCP 3418#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3419 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif 3420#endif
2455#if EV_USE_PORT 3421#if EV_USE_PORT
2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3422 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2457#endif 3423#endif
2458#if EV_USE_KQUEUE 3424#if EV_USE_KQUEUE
2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3425 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3426#endif
3427#if EV_USE_IOURING
3428 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3429#endif
3430#if EV_USE_LINUXAIO
3431 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2460#endif 3432#endif
2461#if EV_USE_EPOLL 3433#if EV_USE_EPOLL
2462 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3434 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2463#endif 3435#endif
2464#if EV_USE_POLL 3436#if EV_USE_POLL
2465 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3437 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2466#endif 3438#endif
2467#if EV_USE_SELECT 3439#if EV_USE_SELECT
2468 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3440 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2469#endif 3441#endif
2470 3442
2471 for (i = NUMPRI; i--; ) 3443 for (i = NUMPRI; i--; )
2472 { 3444 {
2473 array_free (pending, [i]); 3445 array_free (pending, [i]);
… …
2515 3487
2516inline_size void 3488inline_size void
2517loop_fork (EV_P) 3489loop_fork (EV_P)
2518{ 3490{
2519#if EV_USE_PORT 3491#if EV_USE_PORT
2520 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3492 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2521#endif 3493#endif
2522#if EV_USE_KQUEUE 3494#if EV_USE_KQUEUE
2523 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3495 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3496#endif
3497#if EV_USE_IOURING
3498 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3499#endif
3500#if EV_USE_LINUXAIO
3501 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2524#endif 3502#endif
2525#if EV_USE_EPOLL 3503#if EV_USE_EPOLL
2526 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3504 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2527#endif 3505#endif
2528#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2529 infy_fork (EV_A); 3507 infy_fork (EV_A);
2530#endif 3508#endif
2531 3509
3510 if (postfork != 2)
3511 {
3512 #if EV_USE_SIGNALFD
3513 /* surprisingly, nothing needs to be done for signalfd, according to docs, it does the right thing on fork */
3514 #endif
3515
3516 #if EV_USE_TIMERFD
3517 if (ev_is_active (&timerfd_w))
3518 {
3519 ev_ref (EV_A);
3520 ev_io_stop (EV_A_ &timerfd_w);
3521
3522 close (timerfd);
3523 timerfd = -2;
3524
3525 evtimerfd_init (EV_A);
3526 /* reschedule periodics, in case we missed something */
3527 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3528 }
3529 #endif
3530
3531 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2532 if (ev_is_active (&pipe_w)) 3532 if (ev_is_active (&pipe_w))
2533 { 3533 {
2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2535 3535
2536 ev_ref (EV_A); 3536 ev_ref (EV_A);
2537 ev_io_stop (EV_A_ &pipe_w); 3537 ev_io_stop (EV_A_ &pipe_w);
2538 3538
2539#if EV_USE_EVENTFD
2540 if (evfd >= 0)
2541 close (evfd);
2542#endif
2543
2544 if (evpipe [0] >= 0) 3539 if (evpipe [0] >= 0)
2545 {
2546 EV_WIN32_CLOSE_FD (evpipe [0]); 3540 EV_WIN32_CLOSE_FD (evpipe [0]);
2547 EV_WIN32_CLOSE_FD (evpipe [1]); 3541
3542 evpipe_init (EV_A);
3543 /* iterate over everything, in case we missed something before */
3544 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2548 } 3545 }
2549 3546 #endif
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2551 evpipe_init (EV_A);
2552 /* now iterate over everything, in case we missed something */
2553 pipecb (EV_A_ &pipe_w, EV_READ);
2554#endif
2555 } 3547 }
2556 3548
2557 postfork = 0; 3549 postfork = 0;
2558} 3550}
2559 3551
2560#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
2561 3553
3554ecb_cold
2562struct ev_loop * ecb_cold 3555struct ev_loop *
2563ev_loop_new (unsigned int flags) EV_THROW 3556ev_loop_new (unsigned int flags) EV_NOEXCEPT
2564{ 3557{
2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3558 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2566 3559
2567 memset (EV_A, 0, sizeof (struct ev_loop)); 3560 memset (EV_A, 0, sizeof (struct ev_loop));
2568 loop_init (EV_A_ flags); 3561 loop_init (EV_A_ flags);
… …
2575} 3568}
2576 3569
2577#endif /* multiplicity */ 3570#endif /* multiplicity */
2578 3571
2579#if EV_VERIFY 3572#if EV_VERIFY
2580static void noinline ecb_cold 3573ecb_noinline ecb_cold
3574static void
2581verify_watcher (EV_P_ W w) 3575verify_watcher (EV_P_ W w)
2582{ 3576{
2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3577 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2584 3578
2585 if (w->pending) 3579 if (w->pending)
2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3580 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2587} 3581}
2588 3582
2589static void noinline ecb_cold 3583ecb_noinline ecb_cold
3584static void
2590verify_heap (EV_P_ ANHE *heap, int N) 3585verify_heap (EV_P_ ANHE *heap, int N)
2591{ 3586{
2592 int i; 3587 int i;
2593 3588
2594 for (i = HEAP0; i < N + HEAP0; ++i) 3589 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2599 3594
2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3595 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2601 } 3596 }
2602} 3597}
2603 3598
2604static void noinline ecb_cold 3599ecb_noinline ecb_cold
3600static void
2605array_verify (EV_P_ W *ws, int cnt) 3601array_verify (EV_P_ W *ws, int cnt)
2606{ 3602{
2607 while (cnt--) 3603 while (cnt--)
2608 { 3604 {
2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3605 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2612} 3608}
2613#endif 3609#endif
2614 3610
2615#if EV_FEATURE_API 3611#if EV_FEATURE_API
2616void ecb_cold 3612void ecb_cold
2617ev_verify (EV_P) EV_THROW 3613ev_verify (EV_P) EV_NOEXCEPT
2618{ 3614{
2619#if EV_VERIFY 3615#if EV_VERIFY
2620 int i; 3616 int i;
2621 WL w, w2; 3617 WL w, w2;
2622 3618
… …
2698#endif 3694#endif
2699} 3695}
2700#endif 3696#endif
2701 3697
2702#if EV_MULTIPLICITY 3698#if EV_MULTIPLICITY
3699ecb_cold
2703struct ev_loop * ecb_cold 3700struct ev_loop *
2704#else 3701#else
2705int 3702int
2706#endif 3703#endif
2707ev_default_loop (unsigned int flags) EV_THROW 3704ev_default_loop (unsigned int flags) EV_NOEXCEPT
2708{ 3705{
2709 if (!ev_default_loop_ptr) 3706 if (!ev_default_loop_ptr)
2710 { 3707 {
2711#if EV_MULTIPLICITY 3708#if EV_MULTIPLICITY
2712 EV_P = ev_default_loop_ptr = &default_loop_struct; 3709 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2731 3728
2732 return ev_default_loop_ptr; 3729 return ev_default_loop_ptr;
2733} 3730}
2734 3731
2735void 3732void
2736ev_loop_fork (EV_P) EV_THROW 3733ev_loop_fork (EV_P) EV_NOEXCEPT
2737{ 3734{
2738 postfork = 1; 3735 postfork = 1;
2739} 3736}
2740 3737
2741/*****************************************************************************/ 3738/*****************************************************************************/
… …
2745{ 3742{
2746 EV_CB_INVOKE ((W)w, revents); 3743 EV_CB_INVOKE ((W)w, revents);
2747} 3744}
2748 3745
2749unsigned int 3746unsigned int
2750ev_pending_count (EV_P) EV_THROW 3747ev_pending_count (EV_P) EV_NOEXCEPT
2751{ 3748{
2752 int pri; 3749 int pri;
2753 unsigned int count = 0; 3750 unsigned int count = 0;
2754 3751
2755 for (pri = NUMPRI; pri--; ) 3752 for (pri = NUMPRI; pri--; )
2756 count += pendingcnt [pri]; 3753 count += pendingcnt [pri];
2757 3754
2758 return count; 3755 return count;
2759} 3756}
2760 3757
2761void noinline 3758ecb_noinline
3759void
2762ev_invoke_pending (EV_P) 3760ev_invoke_pending (EV_P)
2763{ 3761{
2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ 3762 pendingpri = NUMPRI;
3763
3764 do
3765 {
3766 --pendingpri;
3767
3768 /* pendingpri possibly gets modified in the inner loop */
2765 while (pendingcnt [pendingpri]) 3769 while (pendingcnt [pendingpri])
2766 { 3770 {
2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3771 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2768 3772
2769 p->w->pending = 0; 3773 p->w->pending = 0;
2770 EV_CB_INVOKE (p->w, p->events); 3774 EV_CB_INVOKE (p->w, p->events);
2771 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
2772 } 3776 }
3777 }
3778 while (pendingpri);
2773} 3779}
2774 3780
2775#if EV_IDLE_ENABLE 3781#if EV_IDLE_ENABLE
2776/* make idle watchers pending. this handles the "call-idle */ 3782/* make idle watchers pending. this handles the "call-idle */
2777/* only when higher priorities are idle" logic */ 3783/* only when higher priorities are idle" logic */
2778inline_size void 3784inline_size void
2779idle_reify (EV_P) 3785idle_reify (EV_P)
2780{ 3786{
2781 if (expect_false (idleall)) 3787 if (ecb_expect_false (idleall))
2782 { 3788 {
2783 int pri; 3789 int pri;
2784 3790
2785 for (pri = NUMPRI; pri--; ) 3791 for (pri = NUMPRI; pri--; )
2786 { 3792 {
… …
2816 { 3822 {
2817 ev_at (w) += w->repeat; 3823 ev_at (w) += w->repeat;
2818 if (ev_at (w) < mn_now) 3824 if (ev_at (w) < mn_now)
2819 ev_at (w) = mn_now; 3825 ev_at (w) = mn_now;
2820 3826
2821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3827 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2822 3828
2823 ANHE_at_cache (timers [HEAP0]); 3829 ANHE_at_cache (timers [HEAP0]);
2824 downheap (timers, timercnt, HEAP0); 3830 downheap (timers, timercnt, HEAP0);
2825 } 3831 }
2826 else 3832 else
… …
2835 } 3841 }
2836} 3842}
2837 3843
2838#if EV_PERIODIC_ENABLE 3844#if EV_PERIODIC_ENABLE
2839 3845
2840static void noinline 3846ecb_noinline
3847static void
2841periodic_recalc (EV_P_ ev_periodic *w) 3848periodic_recalc (EV_P_ ev_periodic *w)
2842{ 3849{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845 3852
… …
2847 while (at <= ev_rt_now) 3854 while (at <= ev_rt_now)
2848 { 3855 {
2849 ev_tstamp nat = at + w->interval; 3856 ev_tstamp nat = at + w->interval;
2850 3857
2851 /* when resolution fails us, we use ev_rt_now */ 3858 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at)) 3859 if (ecb_expect_false (nat == at))
2853 { 3860 {
2854 at = ev_rt_now; 3861 at = ev_rt_now;
2855 break; 3862 break;
2856 } 3863 }
2857 3864
… …
2903 } 3910 }
2904} 3911}
2905 3912
2906/* simply recalculate all periodics */ 3913/* simply recalculate all periodics */
2907/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3914/* TODO: maybe ensure that at least one event happens when jumping forward? */
2908static void noinline ecb_cold 3915ecb_noinline ecb_cold
3916static void
2909periodics_reschedule (EV_P) 3917periodics_reschedule (EV_P)
2910{ 3918{
2911 int i; 3919 int i;
2912 3920
2913 /* adjust periodics after time jump */ 3921 /* adjust periodics after time jump */
… …
2926 reheap (periodics, periodiccnt); 3934 reheap (periodics, periodiccnt);
2927} 3935}
2928#endif 3936#endif
2929 3937
2930/* adjust all timers by a given offset */ 3938/* adjust all timers by a given offset */
2931static void noinline ecb_cold 3939ecb_noinline ecb_cold
3940static void
2932timers_reschedule (EV_P_ ev_tstamp adjust) 3941timers_reschedule (EV_P_ ev_tstamp adjust)
2933{ 3942{
2934 int i; 3943 int i;
2935 3944
2936 for (i = 0; i < timercnt; ++i) 3945 for (i = 0; i < timercnt; ++i)
… …
2945/* also detect if there was a timejump, and act accordingly */ 3954/* also detect if there was a timejump, and act accordingly */
2946inline_speed void 3955inline_speed void
2947time_update (EV_P_ ev_tstamp max_block) 3956time_update (EV_P_ ev_tstamp max_block)
2948{ 3957{
2949#if EV_USE_MONOTONIC 3958#if EV_USE_MONOTONIC
2950 if (expect_true (have_monotonic)) 3959 if (ecb_expect_true (have_monotonic))
2951 { 3960 {
2952 int i; 3961 int i;
2953 ev_tstamp odiff = rtmn_diff; 3962 ev_tstamp odiff = rtmn_diff;
2954 3963
2955 mn_now = get_clock (); 3964 mn_now = get_clock ();
2956 3965
2957 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3966 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2958 /* interpolate in the meantime */ 3967 /* interpolate in the meantime */
2959 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3968 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2960 { 3969 {
2961 ev_rt_now = rtmn_diff + mn_now; 3970 ev_rt_now = rtmn_diff + mn_now;
2962 return; 3971 return;
2963 } 3972 }
2964 3973
… …
2978 ev_tstamp diff; 3987 ev_tstamp diff;
2979 rtmn_diff = ev_rt_now - mn_now; 3988 rtmn_diff = ev_rt_now - mn_now;
2980 3989
2981 diff = odiff - rtmn_diff; 3990 diff = odiff - rtmn_diff;
2982 3991
2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3992 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2984 return; /* all is well */ 3993 return; /* all is well */
2985 3994
2986 ev_rt_now = ev_time (); 3995 ev_rt_now = ev_time ();
2987 mn_now = get_clock (); 3996 mn_now = get_clock ();
2988 now_floor = mn_now; 3997 now_floor = mn_now;
… …
2997 else 4006 else
2998#endif 4007#endif
2999 { 4008 {
3000 ev_rt_now = ev_time (); 4009 ev_rt_now = ev_time ();
3001 4010
3002 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4011 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3003 { 4012 {
3004 /* adjust timers. this is easy, as the offset is the same for all of them */ 4013 /* adjust timers. this is easy, as the offset is the same for all of them */
3005 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4014 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3006#if EV_PERIODIC_ENABLE 4015#if EV_PERIODIC_ENABLE
3007 periodics_reschedule (EV_A); 4016 periodics_reschedule (EV_A);
… …
3030#if EV_VERIFY >= 2 4039#if EV_VERIFY >= 2
3031 ev_verify (EV_A); 4040 ev_verify (EV_A);
3032#endif 4041#endif
3033 4042
3034#ifndef _WIN32 4043#ifndef _WIN32
3035 if (expect_false (curpid)) /* penalise the forking check even more */ 4044 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3036 if (expect_false (getpid () != curpid)) 4045 if (ecb_expect_false (getpid () != curpid))
3037 { 4046 {
3038 curpid = getpid (); 4047 curpid = getpid ();
3039 postfork = 1; 4048 postfork = 1;
3040 } 4049 }
3041#endif 4050#endif
3042 4051
3043#if EV_FORK_ENABLE 4052#if EV_FORK_ENABLE
3044 /* we might have forked, so queue fork handlers */ 4053 /* we might have forked, so queue fork handlers */
3045 if (expect_false (postfork)) 4054 if (ecb_expect_false (postfork))
3046 if (forkcnt) 4055 if (forkcnt)
3047 { 4056 {
3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4057 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3049 EV_INVOKE_PENDING; 4058 EV_INVOKE_PENDING;
3050 } 4059 }
3051#endif 4060#endif
3052 4061
3053#if EV_PREPARE_ENABLE 4062#if EV_PREPARE_ENABLE
3054 /* queue prepare watchers (and execute them) */ 4063 /* queue prepare watchers (and execute them) */
3055 if (expect_false (preparecnt)) 4064 if (ecb_expect_false (preparecnt))
3056 { 4065 {
3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4066 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3058 EV_INVOKE_PENDING; 4067 EV_INVOKE_PENDING;
3059 } 4068 }
3060#endif 4069#endif
3061 4070
3062 if (expect_false (loop_done)) 4071 if (ecb_expect_false (loop_done))
3063 break; 4072 break;
3064 4073
3065 /* we might have forked, so reify kernel state if necessary */ 4074 /* we might have forked, so reify kernel state if necessary */
3066 if (expect_false (postfork)) 4075 if (ecb_expect_false (postfork))
3067 loop_fork (EV_A); 4076 loop_fork (EV_A);
3068 4077
3069 /* update fd-related kernel structures */ 4078 /* update fd-related kernel structures */
3070 fd_reify (EV_A); 4079 fd_reify (EV_A);
3071 4080
… …
3076 4085
3077 /* remember old timestamp for io_blocktime calculation */ 4086 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now; 4087 ev_tstamp prev_mn_now = mn_now;
3079 4088
3080 /* update time to cancel out callback processing overhead */ 4089 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100); 4090 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3082 4091
3083 /* from now on, we want a pipe-wake-up */ 4092 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1; 4093 pipe_write_wanted = 1;
3085 4094
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4095 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087 4096
3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4097 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3089 { 4098 {
3090 waittime = MAX_BLOCKTIME; 4099 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4100
4101#if EV_USE_MONOTONIC
4102 if (ecb_expect_true (have_monotonic))
4103 {
4104#if EV_USE_TIMERFD
4105 /* sleep a lot longer when we can reliably detect timejumps */
4106 if (ecb_expect_true (timerfd != -1))
4107 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4108#endif
4109#if !EV_PERIODIC_ENABLE
4110 /* without periodics but with monotonic clock there is no need */
4111 /* for any time jump detection, so sleep longer */
4112 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4113#endif
4114 }
4115#endif
3091 4116
3092 if (timercnt) 4117 if (timercnt)
3093 { 4118 {
3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4119 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3095 if (waittime > to) waittime = to; 4120 if (waittime > to) waittime = to;
… …
3102 if (waittime > to) waittime = to; 4127 if (waittime > to) waittime = to;
3103 } 4128 }
3104#endif 4129#endif
3105 4130
3106 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4131 /* don't let timeouts decrease the waittime below timeout_blocktime */
3107 if (expect_false (waittime < timeout_blocktime)) 4132 if (ecb_expect_false (waittime < timeout_blocktime))
3108 waittime = timeout_blocktime; 4133 waittime = timeout_blocktime;
3109 4134
3110 /* at this point, we NEED to wait, so we have to ensure */ 4135 /* now there are two more special cases left, either we have
3111 /* to pass a minimum nonzero value to the backend */ 4136 * already-expired timers, so we should not sleep, or we have timers
4137 * that expire very soon, in which case we need to wait for a minimum
4138 * amount of time for some event loop backends.
4139 */
3112 if (expect_false (waittime < backend_mintime)) 4140 if (ecb_expect_false (waittime < backend_mintime))
4141 waittime = waittime <= EV_TS_CONST (0.)
4142 ? EV_TS_CONST (0.)
3113 waittime = backend_mintime; 4143 : backend_mintime;
3114 4144
3115 /* extra check because io_blocktime is commonly 0 */ 4145 /* extra check because io_blocktime is commonly 0 */
3116 if (expect_false (io_blocktime)) 4146 if (ecb_expect_false (io_blocktime))
3117 { 4147 {
3118 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4148 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3119 4149
3120 if (sleeptime > waittime - backend_mintime) 4150 if (sleeptime > waittime - backend_mintime)
3121 sleeptime = waittime - backend_mintime; 4151 sleeptime = waittime - backend_mintime;
3122 4152
3123 if (expect_true (sleeptime > 0.)) 4153 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3124 { 4154 {
3125 ev_sleep (sleeptime); 4155 ev_sleep (sleeptime);
3126 waittime -= sleeptime; 4156 waittime -= sleeptime;
3127 } 4157 }
3128 } 4158 }
… …
3135 backend_poll (EV_A_ waittime); 4165 backend_poll (EV_A_ waittime);
3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4166 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137 4167
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4168 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139 4169
4170 ECB_MEMORY_FENCE_ACQUIRE;
3140 if (pipe_write_skipped) 4171 if (pipe_write_skipped)
3141 { 4172 {
3142 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4173 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4174 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3144 } 4175 }
3145 4176
3146
3147 /* update ev_rt_now, do magic */ 4177 /* update ev_rt_now, do magic */
3148 time_update (EV_A_ waittime + sleeptime); 4178 time_update (EV_A_ waittime + sleeptime);
3149 } 4179 }
3150 4180
3151 /* queue pending timers and reschedule them */ 4181 /* queue pending timers and reschedule them */
… …
3159 idle_reify (EV_A); 4189 idle_reify (EV_A);
3160#endif 4190#endif
3161 4191
3162#if EV_CHECK_ENABLE 4192#if EV_CHECK_ENABLE
3163 /* queue check watchers, to be executed first */ 4193 /* queue check watchers, to be executed first */
3164 if (expect_false (checkcnt)) 4194 if (ecb_expect_false (checkcnt))
3165 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3166#endif 4196#endif
3167 4197
3168 EV_INVOKE_PENDING; 4198 EV_INVOKE_PENDING;
3169 } 4199 }
3170 while (expect_true ( 4200 while (ecb_expect_true (
3171 activecnt 4201 activecnt
3172 && !loop_done 4202 && !loop_done
3173 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4203 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3174 )); 4204 ));
3175 4205
… …
3182 4212
3183 return activecnt; 4213 return activecnt;
3184} 4214}
3185 4215
3186void 4216void
3187ev_break (EV_P_ int how) EV_THROW 4217ev_break (EV_P_ int how) EV_NOEXCEPT
3188{ 4218{
3189 loop_done = how; 4219 loop_done = how;
3190} 4220}
3191 4221
3192void 4222void
3193ev_ref (EV_P) EV_THROW 4223ev_ref (EV_P) EV_NOEXCEPT
3194{ 4224{
3195 ++activecnt; 4225 ++activecnt;
3196} 4226}
3197 4227
3198void 4228void
3199ev_unref (EV_P) EV_THROW 4229ev_unref (EV_P) EV_NOEXCEPT
3200{ 4230{
3201 --activecnt; 4231 --activecnt;
3202} 4232}
3203 4233
3204void 4234void
3205ev_now_update (EV_P) EV_THROW 4235ev_now_update (EV_P) EV_NOEXCEPT
3206{ 4236{
3207 time_update (EV_A_ 1e100); 4237 time_update (EV_A_ EV_TSTAMP_HUGE);
3208} 4238}
3209 4239
3210void 4240void
3211ev_suspend (EV_P) EV_THROW 4241ev_suspend (EV_P) EV_NOEXCEPT
3212{ 4242{
3213 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3214} 4244}
3215 4245
3216void 4246void
3217ev_resume (EV_P) EV_THROW 4247ev_resume (EV_P) EV_NOEXCEPT
3218{ 4248{
3219 ev_tstamp mn_prev = mn_now; 4249 ev_tstamp mn_prev = mn_now;
3220 4250
3221 ev_now_update (EV_A); 4251 ev_now_update (EV_A);
3222 timers_reschedule (EV_A_ mn_now - mn_prev); 4252 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3239inline_size void 4269inline_size void
3240wlist_del (WL *head, WL elem) 4270wlist_del (WL *head, WL elem)
3241{ 4271{
3242 while (*head) 4272 while (*head)
3243 { 4273 {
3244 if (expect_true (*head == elem)) 4274 if (ecb_expect_true (*head == elem))
3245 { 4275 {
3246 *head = elem->next; 4276 *head = elem->next;
3247 break; 4277 break;
3248 } 4278 }
3249 4279
… …
3261 w->pending = 0; 4291 w->pending = 0;
3262 } 4292 }
3263} 4293}
3264 4294
3265int 4295int
3266ev_clear_pending (EV_P_ void *w) EV_THROW 4296ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3267{ 4297{
3268 W w_ = (W)w; 4298 W w_ = (W)w;
3269 int pending = w_->pending; 4299 int pending = w_->pending;
3270 4300
3271 if (expect_true (pending)) 4301 if (ecb_expect_true (pending))
3272 { 4302 {
3273 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4303 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3274 p->w = (W)&pending_w; 4304 p->w = (W)&pending_w;
3275 w_->pending = 0; 4305 w_->pending = 0;
3276 return p->events; 4306 return p->events;
… …
3303 w->active = 0; 4333 w->active = 0;
3304} 4334}
3305 4335
3306/*****************************************************************************/ 4336/*****************************************************************************/
3307 4337
3308void noinline 4338ecb_noinline
4339void
3309ev_io_start (EV_P_ ev_io *w) EV_THROW 4340ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3310{ 4341{
3311 int fd = w->fd; 4342 int fd = w->fd;
3312 4343
3313 if (expect_false (ev_is_active (w))) 4344 if (ecb_expect_false (ev_is_active (w)))
3314 return; 4345 return;
3315 4346
3316 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4347 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3317 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4348 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3318 4349
4350#if EV_VERIFY >= 2
4351 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4352#endif
3319 EV_FREQUENT_CHECK; 4353 EV_FREQUENT_CHECK;
3320 4354
3321 ev_start (EV_A_ (W)w, 1); 4355 ev_start (EV_A_ (W)w, 1);
3322 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4356 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3323 wlist_add (&anfds[fd].head, (WL)w); 4357 wlist_add (&anfds[fd].head, (WL)w);
3324 4358
3325 /* common bug, apparently */ 4359 /* common bug, apparently */
3326 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4360 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3327 4361
… …
3329 w->events &= ~EV__IOFDSET; 4363 w->events &= ~EV__IOFDSET;
3330 4364
3331 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3332} 4366}
3333 4367
3334void noinline 4368ecb_noinline
4369void
3335ev_io_stop (EV_P_ ev_io *w) EV_THROW 4370ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3336{ 4371{
3337 clear_pending (EV_A_ (W)w); 4372 clear_pending (EV_A_ (W)w);
3338 if (expect_false (!ev_is_active (w))) 4373 if (ecb_expect_false (!ev_is_active (w)))
3339 return; 4374 return;
3340 4375
3341 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4376 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3342 4377
4378#if EV_VERIFY >= 2
4379 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4380#endif
3343 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3344 4382
3345 wlist_del (&anfds[w->fd].head, (WL)w); 4383 wlist_del (&anfds[w->fd].head, (WL)w);
3346 ev_stop (EV_A_ (W)w); 4384 ev_stop (EV_A_ (W)w);
3347 4385
3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4386 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3349 4387
3350 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
3351} 4389}
3352 4390
3353void noinline 4391ecb_noinline
4392void
3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4393ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3355{ 4394{
3356 if (expect_false (ev_is_active (w))) 4395 if (ecb_expect_false (ev_is_active (w)))
3357 return; 4396 return;
3358 4397
3359 ev_at (w) += mn_now; 4398 ev_at (w) += mn_now;
3360 4399
3361 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4400 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3362 4401
3363 EV_FREQUENT_CHECK; 4402 EV_FREQUENT_CHECK;
3364 4403
3365 ++timercnt; 4404 ++timercnt;
3366 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4405 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3367 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4406 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3368 ANHE_w (timers [ev_active (w)]) = (WT)w; 4407 ANHE_w (timers [ev_active (w)]) = (WT)w;
3369 ANHE_at_cache (timers [ev_active (w)]); 4408 ANHE_at_cache (timers [ev_active (w)]);
3370 upheap (timers, ev_active (w)); 4409 upheap (timers, ev_active (w));
3371 4410
3372 EV_FREQUENT_CHECK; 4411 EV_FREQUENT_CHECK;
3373 4412
3374 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4413 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3375} 4414}
3376 4415
3377void noinline 4416ecb_noinline
4417void
3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4418ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3379{ 4419{
3380 clear_pending (EV_A_ (W)w); 4420 clear_pending (EV_A_ (W)w);
3381 if (expect_false (!ev_is_active (w))) 4421 if (ecb_expect_false (!ev_is_active (w)))
3382 return; 4422 return;
3383 4423
3384 EV_FREQUENT_CHECK; 4424 EV_FREQUENT_CHECK;
3385 4425
3386 { 4426 {
… …
3388 4428
3389 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4429 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3390 4430
3391 --timercnt; 4431 --timercnt;
3392 4432
3393 if (expect_true (active < timercnt + HEAP0)) 4433 if (ecb_expect_true (active < timercnt + HEAP0))
3394 { 4434 {
3395 timers [active] = timers [timercnt + HEAP0]; 4435 timers [active] = timers [timercnt + HEAP0];
3396 adjustheap (timers, timercnt, active); 4436 adjustheap (timers, timercnt, active);
3397 } 4437 }
3398 } 4438 }
… …
3402 ev_stop (EV_A_ (W)w); 4442 ev_stop (EV_A_ (W)w);
3403 4443
3404 EV_FREQUENT_CHECK; 4444 EV_FREQUENT_CHECK;
3405} 4445}
3406 4446
3407void noinline 4447ecb_noinline
4448void
3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4449ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3409{ 4450{
3410 EV_FREQUENT_CHECK; 4451 EV_FREQUENT_CHECK;
3411 4452
3412 clear_pending (EV_A_ (W)w); 4453 clear_pending (EV_A_ (W)w);
3413 4454
… …
3430 4471
3431 EV_FREQUENT_CHECK; 4472 EV_FREQUENT_CHECK;
3432} 4473}
3433 4474
3434ev_tstamp 4475ev_tstamp
3435ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4476ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3436{ 4477{
3437 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4478 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3438} 4479}
3439 4480
3440#if EV_PERIODIC_ENABLE 4481#if EV_PERIODIC_ENABLE
3441void noinline 4482ecb_noinline
4483void
3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4484ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3443{ 4485{
3444 if (expect_false (ev_is_active (w))) 4486 if (ecb_expect_false (ev_is_active (w)))
3445 return; 4487 return;
4488
4489#if EV_USE_TIMERFD
4490 if (timerfd == -2)
4491 evtimerfd_init (EV_A);
4492#endif
3446 4493
3447 if (w->reschedule_cb) 4494 if (w->reschedule_cb)
3448 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4495 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3449 else if (w->interval) 4496 else if (w->interval)
3450 { 4497 {
… …
3456 4503
3457 EV_FREQUENT_CHECK; 4504 EV_FREQUENT_CHECK;
3458 4505
3459 ++periodiccnt; 4506 ++periodiccnt;
3460 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4507 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3461 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4508 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3462 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4509 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3463 ANHE_at_cache (periodics [ev_active (w)]); 4510 ANHE_at_cache (periodics [ev_active (w)]);
3464 upheap (periodics, ev_active (w)); 4511 upheap (periodics, ev_active (w));
3465 4512
3466 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3467 4514
3468 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4515 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3469} 4516}
3470 4517
3471void noinline 4518ecb_noinline
4519void
3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4520ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3473{ 4521{
3474 clear_pending (EV_A_ (W)w); 4522 clear_pending (EV_A_ (W)w);
3475 if (expect_false (!ev_is_active (w))) 4523 if (ecb_expect_false (!ev_is_active (w)))
3476 return; 4524 return;
3477 4525
3478 EV_FREQUENT_CHECK; 4526 EV_FREQUENT_CHECK;
3479 4527
3480 { 4528 {
… …
3482 4530
3483 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4531 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3484 4532
3485 --periodiccnt; 4533 --periodiccnt;
3486 4534
3487 if (expect_true (active < periodiccnt + HEAP0)) 4535 if (ecb_expect_true (active < periodiccnt + HEAP0))
3488 { 4536 {
3489 periodics [active] = periodics [periodiccnt + HEAP0]; 4537 periodics [active] = periodics [periodiccnt + HEAP0];
3490 adjustheap (periodics, periodiccnt, active); 4538 adjustheap (periodics, periodiccnt, active);
3491 } 4539 }
3492 } 4540 }
… …
3494 ev_stop (EV_A_ (W)w); 4542 ev_stop (EV_A_ (W)w);
3495 4543
3496 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3497} 4545}
3498 4546
3499void noinline 4547ecb_noinline
4548void
3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4549ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3501{ 4550{
3502 /* TODO: use adjustheap and recalculation */ 4551 /* TODO: use adjustheap and recalculation */
3503 ev_periodic_stop (EV_A_ w); 4552 ev_periodic_stop (EV_A_ w);
3504 ev_periodic_start (EV_A_ w); 4553 ev_periodic_start (EV_A_ w);
3505} 4554}
… …
3509# define SA_RESTART 0 4558# define SA_RESTART 0
3510#endif 4559#endif
3511 4560
3512#if EV_SIGNAL_ENABLE 4561#if EV_SIGNAL_ENABLE
3513 4562
3514void noinline 4563ecb_noinline
4564void
3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4565ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3516{ 4566{
3517 if (expect_false (ev_is_active (w))) 4567 if (ecb_expect_false (ev_is_active (w)))
3518 return; 4568 return;
3519 4569
3520 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4570 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3521 4571
3522#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
3523 assert (("libev: a signal must not be attached to two different loops", 4573 assert (("libev: a signal must not be attached to two different loops",
3524 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4574 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3525 4575
3526 signals [w->signum - 1].loop = EV_A; 4576 signals [w->signum - 1].loop = EV_A;
4577 ECB_MEMORY_FENCE_RELEASE;
3527#endif 4578#endif
3528 4579
3529 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
3530 4581
3531#if EV_USE_SIGNALFD 4582#if EV_USE_SIGNALFD
… …
3590 } 4641 }
3591 4642
3592 EV_FREQUENT_CHECK; 4643 EV_FREQUENT_CHECK;
3593} 4644}
3594 4645
3595void noinline 4646ecb_noinline
4647void
3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4648ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3597{ 4649{
3598 clear_pending (EV_A_ (W)w); 4650 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 4651 if (ecb_expect_false (!ev_is_active (w)))
3600 return; 4652 return;
3601 4653
3602 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3603 4655
3604 wlist_del (&signals [w->signum - 1].head, (WL)w); 4656 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3632#endif 4684#endif
3633 4685
3634#if EV_CHILD_ENABLE 4686#if EV_CHILD_ENABLE
3635 4687
3636void 4688void
3637ev_child_start (EV_P_ ev_child *w) EV_THROW 4689ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3638{ 4690{
3639#if EV_MULTIPLICITY 4691#if EV_MULTIPLICITY
3640 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4692 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3641#endif 4693#endif
3642 if (expect_false (ev_is_active (w))) 4694 if (ecb_expect_false (ev_is_active (w)))
3643 return; 4695 return;
3644 4696
3645 EV_FREQUENT_CHECK; 4697 EV_FREQUENT_CHECK;
3646 4698
3647 ev_start (EV_A_ (W)w, 1); 4699 ev_start (EV_A_ (W)w, 1);
… …
3649 4701
3650 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3651} 4703}
3652 4704
3653void 4705void
3654ev_child_stop (EV_P_ ev_child *w) EV_THROW 4706ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3655{ 4707{
3656 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3657 if (expect_false (!ev_is_active (w))) 4709 if (ecb_expect_false (!ev_is_active (w)))
3658 return; 4710 return;
3659 4711
3660 EV_FREQUENT_CHECK; 4712 EV_FREQUENT_CHECK;
3661 4713
3662 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4714 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3676 4728
3677#define DEF_STAT_INTERVAL 5.0074891 4729#define DEF_STAT_INTERVAL 5.0074891
3678#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4730#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3679#define MIN_STAT_INTERVAL 0.1074891 4731#define MIN_STAT_INTERVAL 0.1074891
3680 4732
3681static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4733ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3682 4734
3683#if EV_USE_INOTIFY 4735#if EV_USE_INOTIFY
3684 4736
3685/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4737/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3686# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4738# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3687 4739
3688static void noinline 4740ecb_noinline
4741static void
3689infy_add (EV_P_ ev_stat *w) 4742infy_add (EV_P_ ev_stat *w)
3690{ 4743{
3691 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); 4744 w->wd = inotify_add_watch (fs_fd, w->path,
4745 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4746 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4747 | IN_DONT_FOLLOW | IN_MASK_ADD);
3692 4748
3693 if (w->wd >= 0) 4749 if (w->wd >= 0)
3694 { 4750 {
3695 struct statfs sfs; 4751 struct statfs sfs;
3696 4752
… …
3700 4756
3701 if (!fs_2625) 4757 if (!fs_2625)
3702 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4758 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3703 else if (!statfs (w->path, &sfs) 4759 else if (!statfs (w->path, &sfs)
3704 && (sfs.f_type == 0x1373 /* devfs */ 4760 && (sfs.f_type == 0x1373 /* devfs */
4761 || sfs.f_type == 0x4006 /* fat */
4762 || sfs.f_type == 0x4d44 /* msdos */
3705 || sfs.f_type == 0xEF53 /* ext2/3 */ 4763 || sfs.f_type == 0xEF53 /* ext2/3 */
4764 || sfs.f_type == 0x72b6 /* jffs2 */
4765 || sfs.f_type == 0x858458f6 /* ramfs */
4766 || sfs.f_type == 0x5346544e /* ntfs */
3706 || sfs.f_type == 0x3153464a /* jfs */ 4767 || sfs.f_type == 0x3153464a /* jfs */
4768 || sfs.f_type == 0x9123683e /* btrfs */
3707 || sfs.f_type == 0x52654973 /* reiser3 */ 4769 || sfs.f_type == 0x52654973 /* reiser3 */
3708 || sfs.f_type == 0x01021994 /* tempfs */ 4770 || sfs.f_type == 0x01021994 /* tmpfs */
3709 || sfs.f_type == 0x58465342 /* xfs */)) 4771 || sfs.f_type == 0x58465342 /* xfs */))
3710 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4772 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3711 else 4773 else
3712 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4774 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3713 } 4775 }
… …
3748 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3749 ev_timer_again (EV_A_ &w->timer); 4811 ev_timer_again (EV_A_ &w->timer);
3750 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3751} 4813}
3752 4814
3753static void noinline 4815ecb_noinline
4816static void
3754infy_del (EV_P_ ev_stat *w) 4817infy_del (EV_P_ ev_stat *w)
3755{ 4818{
3756 int slot; 4819 int slot;
3757 int wd = w->wd; 4820 int wd = w->wd;
3758 4821
… …
3765 4828
3766 /* remove this watcher, if others are watching it, they will rearm */ 4829 /* remove this watcher, if others are watching it, they will rearm */
3767 inotify_rm_watch (fs_fd, wd); 4830 inotify_rm_watch (fs_fd, wd);
3768} 4831}
3769 4832
3770static void noinline 4833ecb_noinline
4834static void
3771infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4835infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3772{ 4836{
3773 if (slot < 0) 4837 if (slot < 0)
3774 /* overflow, need to check for all hash slots */ 4838 /* overflow, need to check for all hash slots */
3775 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4839 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3811 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4875 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3812 ofs += sizeof (struct inotify_event) + ev->len; 4876 ofs += sizeof (struct inotify_event) + ev->len;
3813 } 4877 }
3814} 4878}
3815 4879
3816inline_size void ecb_cold 4880inline_size ecb_cold
4881void
3817ev_check_2625 (EV_P) 4882ev_check_2625 (EV_P)
3818{ 4883{
3819 /* kernels < 2.6.25 are borked 4884 /* kernels < 2.6.25 are borked
3820 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4885 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3821 */ 4886 */
… …
3911#else 4976#else
3912# define EV_LSTAT(p,b) lstat (p, b) 4977# define EV_LSTAT(p,b) lstat (p, b)
3913#endif 4978#endif
3914 4979
3915void 4980void
3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4981ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3917{ 4982{
3918 if (lstat (w->path, &w->attr) < 0) 4983 if (lstat (w->path, &w->attr) < 0)
3919 w->attr.st_nlink = 0; 4984 w->attr.st_nlink = 0;
3920 else if (!w->attr.st_nlink) 4985 else if (!w->attr.st_nlink)
3921 w->attr.st_nlink = 1; 4986 w->attr.st_nlink = 1;
3922} 4987}
3923 4988
3924static void noinline 4989ecb_noinline
4990static void
3925stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4991stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3926{ 4992{
3927 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4993 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3928 4994
3929 ev_statdata prev = w->attr; 4995 ev_statdata prev = w->attr;
… …
3960 ev_feed_event (EV_A_ w, EV_STAT); 5026 ev_feed_event (EV_A_ w, EV_STAT);
3961 } 5027 }
3962} 5028}
3963 5029
3964void 5030void
3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5031ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3966{ 5032{
3967 if (expect_false (ev_is_active (w))) 5033 if (ecb_expect_false (ev_is_active (w)))
3968 return; 5034 return;
3969 5035
3970 ev_stat_stat (EV_A_ w); 5036 ev_stat_stat (EV_A_ w);
3971 5037
3972 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5038 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3991 5057
3992 EV_FREQUENT_CHECK; 5058 EV_FREQUENT_CHECK;
3993} 5059}
3994 5060
3995void 5061void
3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5062ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3997{ 5063{
3998 clear_pending (EV_A_ (W)w); 5064 clear_pending (EV_A_ (W)w);
3999 if (expect_false (!ev_is_active (w))) 5065 if (ecb_expect_false (!ev_is_active (w)))
4000 return; 5066 return;
4001 5067
4002 EV_FREQUENT_CHECK; 5068 EV_FREQUENT_CHECK;
4003 5069
4004#if EV_USE_INOTIFY 5070#if EV_USE_INOTIFY
… …
4017} 5083}
4018#endif 5084#endif
4019 5085
4020#if EV_IDLE_ENABLE 5086#if EV_IDLE_ENABLE
4021void 5087void
4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5088ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4023{ 5089{
4024 if (expect_false (ev_is_active (w))) 5090 if (ecb_expect_false (ev_is_active (w)))
4025 return; 5091 return;
4026 5092
4027 pri_adjust (EV_A_ (W)w); 5093 pri_adjust (EV_A_ (W)w);
4028 5094
4029 EV_FREQUENT_CHECK; 5095 EV_FREQUENT_CHECK;
… …
4032 int active = ++idlecnt [ABSPRI (w)]; 5098 int active = ++idlecnt [ABSPRI (w)];
4033 5099
4034 ++idleall; 5100 ++idleall;
4035 ev_start (EV_A_ (W)w, active); 5101 ev_start (EV_A_ (W)w, active);
4036 5102
4037 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5103 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4038 idles [ABSPRI (w)][active - 1] = w; 5104 idles [ABSPRI (w)][active - 1] = w;
4039 } 5105 }
4040 5106
4041 EV_FREQUENT_CHECK; 5107 EV_FREQUENT_CHECK;
4042} 5108}
4043 5109
4044void 5110void
4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5111ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4046{ 5112{
4047 clear_pending (EV_A_ (W)w); 5113 clear_pending (EV_A_ (W)w);
4048 if (expect_false (!ev_is_active (w))) 5114 if (ecb_expect_false (!ev_is_active (w)))
4049 return; 5115 return;
4050 5116
4051 EV_FREQUENT_CHECK; 5117 EV_FREQUENT_CHECK;
4052 5118
4053 { 5119 {
… …
4064} 5130}
4065#endif 5131#endif
4066 5132
4067#if EV_PREPARE_ENABLE 5133#if EV_PREPARE_ENABLE
4068void 5134void
4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5135ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4070{ 5136{
4071 if (expect_false (ev_is_active (w))) 5137 if (ecb_expect_false (ev_is_active (w)))
4072 return; 5138 return;
4073 5139
4074 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4075 5141
4076 ev_start (EV_A_ (W)w, ++preparecnt); 5142 ev_start (EV_A_ (W)w, ++preparecnt);
4077 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5143 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4078 prepares [preparecnt - 1] = w; 5144 prepares [preparecnt - 1] = w;
4079 5145
4080 EV_FREQUENT_CHECK; 5146 EV_FREQUENT_CHECK;
4081} 5147}
4082 5148
4083void 5149void
4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5150ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4085{ 5151{
4086 clear_pending (EV_A_ (W)w); 5152 clear_pending (EV_A_ (W)w);
4087 if (expect_false (!ev_is_active (w))) 5153 if (ecb_expect_false (!ev_is_active (w)))
4088 return; 5154 return;
4089 5155
4090 EV_FREQUENT_CHECK; 5156 EV_FREQUENT_CHECK;
4091 5157
4092 { 5158 {
… …
4102} 5168}
4103#endif 5169#endif
4104 5170
4105#if EV_CHECK_ENABLE 5171#if EV_CHECK_ENABLE
4106void 5172void
4107ev_check_start (EV_P_ ev_check *w) EV_THROW 5173ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4108{ 5174{
4109 if (expect_false (ev_is_active (w))) 5175 if (ecb_expect_false (ev_is_active (w)))
4110 return; 5176 return;
4111 5177
4112 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4113 5179
4114 ev_start (EV_A_ (W)w, ++checkcnt); 5180 ev_start (EV_A_ (W)w, ++checkcnt);
4115 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5181 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4116 checks [checkcnt - 1] = w; 5182 checks [checkcnt - 1] = w;
4117 5183
4118 EV_FREQUENT_CHECK; 5184 EV_FREQUENT_CHECK;
4119} 5185}
4120 5186
4121void 5187void
4122ev_check_stop (EV_P_ ev_check *w) EV_THROW 5188ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4123{ 5189{
4124 clear_pending (EV_A_ (W)w); 5190 clear_pending (EV_A_ (W)w);
4125 if (expect_false (!ev_is_active (w))) 5191 if (ecb_expect_false (!ev_is_active (w)))
4126 return; 5192 return;
4127 5193
4128 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4129 5195
4130 { 5196 {
… …
4139 EV_FREQUENT_CHECK; 5205 EV_FREQUENT_CHECK;
4140} 5206}
4141#endif 5207#endif
4142 5208
4143#if EV_EMBED_ENABLE 5209#if EV_EMBED_ENABLE
4144void noinline 5210ecb_noinline
5211void
4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5212ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4146{ 5213{
4147 ev_run (w->other, EVRUN_NOWAIT); 5214 ev_run (w->other, EVRUN_NOWAIT);
4148} 5215}
4149 5216
4150static void 5217static void
… …
4172 ev_run (EV_A_ EVRUN_NOWAIT); 5239 ev_run (EV_A_ EVRUN_NOWAIT);
4173 } 5240 }
4174 } 5241 }
4175} 5242}
4176 5243
5244#if EV_FORK_ENABLE
4177static void 5245static void
4178embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5246embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4179{ 5247{
4180 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5248 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4181 5249
… …
4188 ev_run (EV_A_ EVRUN_NOWAIT); 5256 ev_run (EV_A_ EVRUN_NOWAIT);
4189 } 5257 }
4190 5258
4191 ev_embed_start (EV_A_ w); 5259 ev_embed_start (EV_A_ w);
4192} 5260}
5261#endif
4193 5262
4194#if 0 5263#if 0
4195static void 5264static void
4196embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5265embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4197{ 5266{
4198 ev_idle_stop (EV_A_ idle); 5267 ev_idle_stop (EV_A_ idle);
4199} 5268}
4200#endif 5269#endif
4201 5270
4202void 5271void
4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5272ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4204{ 5273{
4205 if (expect_false (ev_is_active (w))) 5274 if (ecb_expect_false (ev_is_active (w)))
4206 return; 5275 return;
4207 5276
4208 { 5277 {
4209 EV_P = w->other; 5278 EV_P = w->other;
4210 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5279 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4218 5287
4219 ev_prepare_init (&w->prepare, embed_prepare_cb); 5288 ev_prepare_init (&w->prepare, embed_prepare_cb);
4220 ev_set_priority (&w->prepare, EV_MINPRI); 5289 ev_set_priority (&w->prepare, EV_MINPRI);
4221 ev_prepare_start (EV_A_ &w->prepare); 5290 ev_prepare_start (EV_A_ &w->prepare);
4222 5291
5292#if EV_FORK_ENABLE
4223 ev_fork_init (&w->fork, embed_fork_cb); 5293 ev_fork_init (&w->fork, embed_fork_cb);
4224 ev_fork_start (EV_A_ &w->fork); 5294 ev_fork_start (EV_A_ &w->fork);
5295#endif
4225 5296
4226 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5297 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4227 5298
4228 ev_start (EV_A_ (W)w, 1); 5299 ev_start (EV_A_ (W)w, 1);
4229 5300
4230 EV_FREQUENT_CHECK; 5301 EV_FREQUENT_CHECK;
4231} 5302}
4232 5303
4233void 5304void
4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5305ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4235{ 5306{
4236 clear_pending (EV_A_ (W)w); 5307 clear_pending (EV_A_ (W)w);
4237 if (expect_false (!ev_is_active (w))) 5308 if (ecb_expect_false (!ev_is_active (w)))
4238 return; 5309 return;
4239 5310
4240 EV_FREQUENT_CHECK; 5311 EV_FREQUENT_CHECK;
4241 5312
4242 ev_io_stop (EV_A_ &w->io); 5313 ev_io_stop (EV_A_ &w->io);
4243 ev_prepare_stop (EV_A_ &w->prepare); 5314 ev_prepare_stop (EV_A_ &w->prepare);
5315#if EV_FORK_ENABLE
4244 ev_fork_stop (EV_A_ &w->fork); 5316 ev_fork_stop (EV_A_ &w->fork);
5317#endif
4245 5318
4246 ev_stop (EV_A_ (W)w); 5319 ev_stop (EV_A_ (W)w);
4247 5320
4248 EV_FREQUENT_CHECK; 5321 EV_FREQUENT_CHECK;
4249} 5322}
4250#endif 5323#endif
4251 5324
4252#if EV_FORK_ENABLE 5325#if EV_FORK_ENABLE
4253void 5326void
4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5327ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4255{ 5328{
4256 if (expect_false (ev_is_active (w))) 5329 if (ecb_expect_false (ev_is_active (w)))
4257 return; 5330 return;
4258 5331
4259 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4260 5333
4261 ev_start (EV_A_ (W)w, ++forkcnt); 5334 ev_start (EV_A_ (W)w, ++forkcnt);
4262 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5335 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4263 forks [forkcnt - 1] = w; 5336 forks [forkcnt - 1] = w;
4264 5337
4265 EV_FREQUENT_CHECK; 5338 EV_FREQUENT_CHECK;
4266} 5339}
4267 5340
4268void 5341void
4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5342ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4270{ 5343{
4271 clear_pending (EV_A_ (W)w); 5344 clear_pending (EV_A_ (W)w);
4272 if (expect_false (!ev_is_active (w))) 5345 if (ecb_expect_false (!ev_is_active (w)))
4273 return; 5346 return;
4274 5347
4275 EV_FREQUENT_CHECK; 5348 EV_FREQUENT_CHECK;
4276 5349
4277 { 5350 {
… …
4287} 5360}
4288#endif 5361#endif
4289 5362
4290#if EV_CLEANUP_ENABLE 5363#if EV_CLEANUP_ENABLE
4291void 5364void
4292ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5365ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4293{ 5366{
4294 if (expect_false (ev_is_active (w))) 5367 if (ecb_expect_false (ev_is_active (w)))
4295 return; 5368 return;
4296 5369
4297 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4298 5371
4299 ev_start (EV_A_ (W)w, ++cleanupcnt); 5372 ev_start (EV_A_ (W)w, ++cleanupcnt);
4300 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5373 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4301 cleanups [cleanupcnt - 1] = w; 5374 cleanups [cleanupcnt - 1] = w;
4302 5375
4303 /* cleanup watchers should never keep a refcount on the loop */ 5376 /* cleanup watchers should never keep a refcount on the loop */
4304 ev_unref (EV_A); 5377 ev_unref (EV_A);
4305 EV_FREQUENT_CHECK; 5378 EV_FREQUENT_CHECK;
4306} 5379}
4307 5380
4308void 5381void
4309ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5382ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4310{ 5383{
4311 clear_pending (EV_A_ (W)w); 5384 clear_pending (EV_A_ (W)w);
4312 if (expect_false (!ev_is_active (w))) 5385 if (ecb_expect_false (!ev_is_active (w)))
4313 return; 5386 return;
4314 5387
4315 EV_FREQUENT_CHECK; 5388 EV_FREQUENT_CHECK;
4316 ev_ref (EV_A); 5389 ev_ref (EV_A);
4317 5390
… …
4328} 5401}
4329#endif 5402#endif
4330 5403
4331#if EV_ASYNC_ENABLE 5404#if EV_ASYNC_ENABLE
4332void 5405void
4333ev_async_start (EV_P_ ev_async *w) EV_THROW 5406ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4334{ 5407{
4335 if (expect_false (ev_is_active (w))) 5408 if (ecb_expect_false (ev_is_active (w)))
4336 return; 5409 return;
4337 5410
4338 w->sent = 0; 5411 w->sent = 0;
4339 5412
4340 evpipe_init (EV_A); 5413 evpipe_init (EV_A);
4341 5414
4342 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4343 5416
4344 ev_start (EV_A_ (W)w, ++asynccnt); 5417 ev_start (EV_A_ (W)w, ++asynccnt);
4345 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5418 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4346 asyncs [asynccnt - 1] = w; 5419 asyncs [asynccnt - 1] = w;
4347 5420
4348 EV_FREQUENT_CHECK; 5421 EV_FREQUENT_CHECK;
4349} 5422}
4350 5423
4351void 5424void
4352ev_async_stop (EV_P_ ev_async *w) EV_THROW 5425ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4353{ 5426{
4354 clear_pending (EV_A_ (W)w); 5427 clear_pending (EV_A_ (W)w);
4355 if (expect_false (!ev_is_active (w))) 5428 if (ecb_expect_false (!ev_is_active (w)))
4356 return; 5429 return;
4357 5430
4358 EV_FREQUENT_CHECK; 5431 EV_FREQUENT_CHECK;
4359 5432
4360 { 5433 {
… …
4368 5441
4369 EV_FREQUENT_CHECK; 5442 EV_FREQUENT_CHECK;
4370} 5443}
4371 5444
4372void 5445void
4373ev_async_send (EV_P_ ev_async *w) EV_THROW 5446ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4374{ 5447{
4375 w->sent = 1; 5448 w->sent = 1;
4376 evpipe_write (EV_A_ &async_pending); 5449 evpipe_write (EV_A_ &async_pending);
4377} 5450}
4378#endif 5451#endif
… …
4415 5488
4416 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5489 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4417} 5490}
4418 5491
4419void 5492void
4420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5493ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4421{ 5494{
4422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5495 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4423
4424 if (expect_false (!once))
4425 {
4426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4427 return;
4428 }
4429 5496
4430 once->cb = cb; 5497 once->cb = cb;
4431 once->arg = arg; 5498 once->arg = arg;
4432 5499
4433 ev_init (&once->io, once_cb_io); 5500 ev_init (&once->io, once_cb_io);
… …
4446} 5513}
4447 5514
4448/*****************************************************************************/ 5515/*****************************************************************************/
4449 5516
4450#if EV_WALK_ENABLE 5517#if EV_WALK_ENABLE
4451void ecb_cold 5518ecb_cold
5519void
4452ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5520ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4453{ 5521{
4454 int i, j; 5522 int i, j;
4455 ev_watcher_list *wl, *wn; 5523 ev_watcher_list *wl, *wn;
4456 5524
4457 if (types & (EV_IO | EV_EMBED)) 5525 if (types & (EV_IO | EV_EMBED))

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