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Comparing libev/ev.c (file contents):
Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC vs.
Revision 1.524 by root, Wed Jan 22 02:20:47 2020 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) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#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
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 270#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 272#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 274#else
246# error "unable to find value for NSIG, please report" 275# 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 276#endif
251 277
252#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
254#endif 280#endif
255 281
256#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 285# else
260# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
287# endif
288#endif
289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
261# endif 296# endif
262#endif 297#endif
263 298
264#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 342
308#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 344# define EV_USE_PORT 0
310#endif 345#endif
311 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
312#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 366# else
316# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
339# else 390# else
340# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
341# endif 392# endif
342#endif 393#endif
343 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
344#if 0 /* debugging */ 403#if 0 /* debugging */
345# define EV_VERIFY 3 404# define EV_VERIFY 3
346# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
348#endif 407#endif
… …
355# define EV_USE_4HEAP EV_FEATURE_DATA 414# define EV_USE_4HEAP EV_FEATURE_DATA
356#endif 415#endif
357 416
358#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
419#endif
420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
360#endif 435#endif
361 436
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* 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. */ 438/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h> 440# include <sys/syscall.h>
366# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
370# else 446# else
371# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
373# endif 449# endif
374#endif 450#endif
375 451
376/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377 453
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 454#ifndef CLOCK_MONOTONIC
385# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
386# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
387#endif 457#endif
388 458
… …
392#endif 462#endif
393 463
394#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
395# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
396# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
467#endif
468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
397#endif 475#endif
398 476
399#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
400/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
402# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
403# endif 506# endif
404#endif 507#endif
405 508
406#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
407# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
412# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
413# endif 516# endif
414#endif 517#endif
415 518
416#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
418# include <stdint.h> 521# include <stdint.h>
419# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
420# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
421# endif 524# endif
422# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
428# endif 531# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif 533#endif
431 534
432#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
434# include <stdint.h> 537# include <stdint.h>
435# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
437# endif 540# endif
438# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
440# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
441# else 544# else
442# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
443# endif 546# endif
444# endif 547# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
446 549
447struct signalfd_siginfo 550struct signalfd_siginfo
448{ 551{
449 uint32_t ssi_signo; 552 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
451}; 554};
452#endif 555#endif
453 556
454/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
455 568
456#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 571#else
459# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
464 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
465 */ 578 */
466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
468 581
469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#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) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
471 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# 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) 598# 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) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
474 603
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
477/* 606/*
478 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
479 * 608 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved. 611 * All rights reserved.
483 * 612 *
484 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 630 * 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 631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE. 632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
504 */ 644 */
505 645
506#ifndef ECB_H 646#ifndef ECB_H
507#define ECB_H 647#define ECB_H
508 648
509/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010002 650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
511 653
512#ifdef _WIN32 654#ifdef _WIN32
513 typedef signed char int8_t; 655 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
515 typedef signed short int16_t; 659 typedef signed short int16_t;
516 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
517 typedef signed int int32_t; 663 typedef signed int int32_t;
518 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
519 #if __GNUC__ 667 #if __GNUC__
520 typedef signed long long int64_t; 668 typedef signed long long int64_t;
521 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
525 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
526 #ifdef _WIN64 676 #ifdef _WIN64
527 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
530 #else 680 #else
… …
532 typedef uint32_t uintptr_t; 682 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t; 683 typedef int32_t intptr_t;
534 #endif 684 #endif
535#else 685#else
536 #include <inttypes.h> 686 #include <inttypes.h>
537 #if UINTMAX_MAX > 0xffffffffU 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
538 #define ECB_PTRSIZE 8 688 #define ECB_PTRSIZE 8
539 #else 689 #else
540 #define ECB_PTRSIZE 4 690 #define ECB_PTRSIZE 4
691 #endif
692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
541 #endif 711 #endif
542#endif 712#endif
543 713
544/* many compilers define _GNUC_ to some versions but then only implement 714/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions, 715 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so. 717 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have 718 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place. 719 * an issue with that they should have done it right in the first place.
550 */ 720 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
554 #else 723#else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
556 #endif 725#endif
557#endif
558 726
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
560#define ECB_C99 (__STDC_VERSION__ >= 199901L) 728
561#define ECB_C11 (__STDC_VERSION__ >= 201112L) 729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
562#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L) 742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
564 757
565#if ECB_CPP 758#if ECB_CPP
566 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
583 776
584#if ECB_NO_SMP 777#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
586#endif 779#endif
587 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
588#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
590 #if __i386 || __i386__ 793 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__ 817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__ 825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
614 #elif defined __alpha__ 829 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__ 831 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__ 834 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
621 #endif 842 #endif
622 #endif 843 #endif
623#endif 844#endif
624 845
625#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
629 853
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 854 #elif ECB_CLANG_EXTENSION(c_atomic)
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model. 855 /* see comment below (stdatomic.h) about the C11 memory model. */
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */ 857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
638 860
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32 874 #elif defined _WIN32
647 #include <WinNT.h> 875 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h> 878 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
654 #elif __xlC__ 883 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
656 #endif 885 #endif
657#endif 886#endif
658 887
659#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */ 890 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h> 892 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
671 #endif 896 #endif
672#endif 897#endif
673 898
674#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
695 920
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif 923#endif
699 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
700/*****************************************************************************/ 929/*****************************************************************************/
701 930
702#if __cplusplus 931#if ECB_CPP
703 #define ecb_inline static inline 932 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
706#elif ECB_C99 935#elif ECB_C99
707 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
721 950
722#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
726 956
727#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
728 958
729#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
730 #define ecb_attribute(attrlist) __attribute__(attrlist) 960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr) 966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else 983#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
739#endif 985#endif
740 986
741/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5) 988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
743 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
744#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
745 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
746#endif 994#endif
747 995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
748#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
749#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
752 1019
753#if ECB_C11 1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
754 #define ecb_noreturn _Noreturn 1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
755#else 1028#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif 1030#endif
758 1031
759#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
… …
774/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
777 1050
778/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4) 1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */ 1062 /* no popcountll */
787#else 1063#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
789 ecb_function_ int 1065 ecb_function_ ecb_const int
790 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
791 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
792 int r = 0; 1073 int r = 0;
793 1074
794 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
795 1076
796#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
806 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
808#endif 1089#endif
809 1090
810 return r; 1091 return r;
1092#endif
811 } 1093 }
812 1094
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
814 ecb_function_ int 1096 ecb_function_ ecb_const int
815 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
816 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
817 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
819 } 1107 }
820 1108
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
822 ecb_function_ int 1110 ecb_function_ ecb_const int
823 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
824 { 1112 {
825 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101; 1116 x *= 0x01010101;
829 1117
830 return x >> 24; 1118 return x >> 24;
831 } 1119 }
832 1120
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
834 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
835 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
836 int r = 0; 1129 int r = 0;
837 1130
838 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
843 1136
844 return r; 1137 return r;
1138#endif
845 } 1139 }
846 1140
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
848 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
849 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
850 int r = 0; 1149 int r = 0;
851 1150
852 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
853 1152
854 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
855 } 1155 }
856#endif 1156#endif
857 1157
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862 1162
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
865{ 1165{
866 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868} 1168}
869 1169
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
872{ 1172{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
877 1177
878 return x; 1178 return x;
879} 1179}
880 1180
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
883{ 1183{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
890 return x; 1190 return x;
891} 1191}
892 1192
893/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */ 1194/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
896ecb_function_ int 1196ecb_function_ ecb_const int
897ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
898{ 1198{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900} 1200}
901 1201
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
910 1210
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919 1219
920#if ECB_GCC_VERSION(4,3) 1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
922 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
924#else 1271#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
926 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
927 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
928 { 1275 {
929 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
930 } 1277 }
931 1278
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
933 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
934 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
935 { 1282 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 } 1284 }
938 1285
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
940 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
941 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
942 { 1289 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 } 1291 }
945#endif 1292#endif
946 1293
947#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
948 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
949#else 1296#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
952 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
953#endif 1300#endif
954 1301
955/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957 1304
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
959ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
960ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
961{ 1308{
962 /* the union code still generates code under pressure in gcc, */ 1309 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */ 1310 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */ 1311 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */ 1312 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */ 1313 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */ 1314 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
971 return 0x44; 1318 return 0x44332211;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
973 return 0x11; 1322 return 0x11223344;
974#else 1323#else
975 union 1324 union
976 { 1325 {
1326 uint8_t c[4];
977 uint32_t i; 1327 uint32_t u;
978 uint8_t c;
979 } u = { 0x11223344 }; 1328 } u = { 0x11, 0x22, 0x33, 0x44 };
980 return u.c; 1329 return u.u;
981#endif 1330#endif
982} 1331}
983 1332
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
988 1409
989#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else 1412#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif 1414#endif
994 1415
995#if __cplusplus 1416#if ECB_CPP
996 template<typename T> 1417 template<typename T>
997 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
998 { 1419 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 } 1421 }
… …
1017 } 1438 }
1018#else 1439#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif 1441#endif
1021 1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1022/*******************************************************************************/ 1541/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024 1543
1025/* basically, everything uses "ieee pure-endian" floating point numbers */ 1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \ 1546#if 0 \
1028 || __i386 || __i386__ \ 1547 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1548 || ECB_GCC_AMD64 \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \ 1550 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \ 1551 || defined __mips__ \
1034 || defined __alpha__ \ 1552 || defined __alpha__ \
1035 || defined __hppa__ \ 1553 || defined __hppa__ \
1036 || defined __ia64__ \ 1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1038 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else 1562#else
1041 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif 1564#endif
1044 1565
1045#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
1046 1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1047 /* convert a float to ieee single/binary32 */ 1591 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1049 ecb_function_ uint32_t 1593 ecb_function_ ecb_const uint32_t
1050 ecb_float_to_binary32 (float x) 1594 ecb_float_to_binary32 (float x)
1051 { 1595 {
1052 uint32_t r; 1596 uint32_t r;
1053 1597
1054 #if ECB_STDFP 1598 #if ECB_STDFP
… …
1061 if (x == 0e0f ) return 0x00000000U; 1605 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU; 1608 if (x != x ) return 0x7fbfffffU;
1065 1609
1066 m = frexpf (x, &e) * 0x1000000U; 1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1067 1611
1068 r = m & 0x80000000U; 1612 r = m & 0x80000000U;
1069 1613
1070 if (r) 1614 if (r)
1071 m = -m; 1615 m = -m;
… …
1083 1627
1084 return r; 1628 return r;
1085 } 1629 }
1086 1630
1087 /* converts an ieee single/binary32 to a float */ 1631 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1089 ecb_function_ float 1633 ecb_function_ ecb_const float
1090 ecb_binary32_to_float (uint32_t x) 1634 ecb_binary32_to_float (uint32_t x)
1091 { 1635 {
1092 float r; 1636 float r;
1093 1637
1094 #if ECB_STDFP 1638 #if ECB_STDFP
… …
1104 x |= 0x800000U; 1648 x |= 0x800000U;
1105 else 1649 else
1106 e = 1; 1650 e = 1;
1107 1651
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1110 1654
1111 r = neg ? -r : r; 1655 r = neg ? -r : r;
1112 #endif 1656 #endif
1113 1657
1114 return r; 1658 return r;
1115 } 1659 }
1116 1660
1117 /* convert a double to ieee double/binary64 */ 1661 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1119 ecb_function_ uint64_t 1663 ecb_function_ ecb_const uint64_t
1120 ecb_double_to_binary64 (double x) 1664 ecb_double_to_binary64 (double x)
1121 { 1665 {
1122 uint64_t r; 1666 uint64_t r;
1123 1667
1124 #if ECB_STDFP 1668 #if ECB_STDFP
… …
1153 1697
1154 return r; 1698 return r;
1155 } 1699 }
1156 1700
1157 /* converts an ieee double/binary64 to a double */ 1701 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1159 ecb_function_ double 1703 ecb_function_ ecb_const double
1160 ecb_binary64_to_double (uint64_t x) 1704 ecb_binary64_to_double (uint64_t x)
1161 { 1705 {
1162 double r; 1706 double r;
1163 1707
1164 #if ECB_STDFP 1708 #if ECB_STDFP
… …
1182 #endif 1726 #endif
1183 1727
1184 return r; 1728 return r;
1185 } 1729 }
1186 1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1187#endif 1747#endif
1188 1748
1189#endif 1749#endif
1190 1750
1191/* ECB.H END */ 1751/* ECB.H END */
1192 1752
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1197 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1200 */ 1760 */
1201# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1205# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif 1768#endif
1209 1769
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
1214#define inline_size ecb_inline 1770#define inline_size ecb_inline
1215 1771
1216#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1217# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1218#else 1774#else
1219# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1220#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
1221 1843
1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1223 1845
1224#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1225# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1226#else 1848#else
1227# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1228#endif 1850#endif
1229 1851
1230#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1231#define EMPTY2(a,b) /* used to suppress some warnings */
1232 1853
1233typedef ev_watcher *W; 1854typedef ev_watcher *W;
1234typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1235typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1236 1857
… …
1261# include "ev_win32.c" 1882# include "ev_win32.c"
1262#endif 1883#endif
1263 1884
1264/*****************************************************************************/ 1885/*****************************************************************************/
1265 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1266/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1267 1892
1268#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1269# include <math.h> 1894# include <math.h>
1270# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1271#else 1896#else
1272 1897
1273#include <float.h> 1898#include <float.h>
1274 1899
1275/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1276static ev_tstamp noinline 1902static ev_tstamp
1277ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1278{ 1904{
1279 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else 1908#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif 1910#endif
1285 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1286 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1287 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1288 { 1922 {
1289 ev_tstamp f; 1923 ev_tstamp f;
1290 1924
1291 if (v == v - 1.) 1925 if (v == v - 1.)
1292 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1293 1927
1294 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1296 } 1930 }
1297 1931
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1307 return (unsigned long)v; 1933 return (unsigned long)v;
1308} 1934}
1309 1935
1310#endif 1936#endif
… …
1313 1939
1314#ifdef __linux 1940#ifdef __linux
1315# include <sys/utsname.h> 1941# include <sys/utsname.h>
1316#endif 1942#endif
1317 1943
1318static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1319ev_linux_version (void) 1946ev_linux_version (void)
1320{ 1947{
1321#ifdef __linux 1948#ifdef __linux
1322 unsigned int v = 0; 1949 unsigned int v = 0;
1323 struct utsname buf; 1950 struct utsname buf;
… …
1352} 1979}
1353 1980
1354/*****************************************************************************/ 1981/*****************************************************************************/
1355 1982
1356#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1357static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1358ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1359{ 1987{
1360 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1361} 1989}
1362#endif 1990#endif
1363 1991
1364static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1365 1993
1366void ecb_cold 1994ecb_cold
1995void
1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1368{ 1997{
1369 syserr_cb = cb; 1998 syserr_cb = cb;
1370} 1999}
1371 2000
1372static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1373ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1374{ 2004{
1375 if (!msg) 2005 if (!msg)
1376 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1377 2007
… …
1390 abort (); 2020 abort ();
1391 } 2021 }
1392} 2022}
1393 2023
1394static void * 2024static void *
1395ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1396{ 2026{
1397 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1398 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1399 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1406 2036
1407 free (ptr); 2037 free (ptr);
1408 return 0; 2038 return 0;
1409} 2039}
1410 2040
1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1412 2042
1413void ecb_cold 2043ecb_cold
2044void
1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1415{ 2046{
1416 alloc = cb; 2047 alloc = cb;
1417} 2048}
1418 2049
1419inline_speed void * 2050inline_speed void *
… …
1446typedef struct 2077typedef struct
1447{ 2078{
1448 WL head; 2079 WL head;
1449 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1450 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1451 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1452 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1453#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1454 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1455#endif 2086#endif
1456#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1457 SOCKET handle; 2088 SOCKET handle;
… …
1511 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1513 2144
1514#else 2145#else
1515 2146
1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1517 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1518 #include "ev_vars.h" 2149 #include "ev_vars.h"
1519 #undef VAR 2150 #undef VAR
1520 2151
1521 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1522 2153
1523#endif 2154#endif
1524 2155
1525#if EV_FEATURE_API 2156#if EV_FEATURE_API
1526# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1527# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1528# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1529#else 2160#else
1530# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1531# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1532# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1536 2167
1537/*****************************************************************************/ 2168/*****************************************************************************/
1538 2169
1539#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1540ev_tstamp 2171ev_tstamp
1541ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1542{ 2173{
1543#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1544 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1545 { 2176 {
1546 struct timespec ts; 2177 struct timespec ts;
1547 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1548 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1549 } 2180 }
1550#endif 2181#endif
1551 2182
2183 {
1552 struct timeval tv; 2184 struct timeval tv;
1553 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1554 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1555} 2188}
1556#endif 2189#endif
1557 2190
1558inline_size ev_tstamp 2191inline_size ev_tstamp
1559get_clock (void) 2192get_clock (void)
1560{ 2193{
1561#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1562 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1563 { 2196 {
1564 struct timespec ts; 2197 struct timespec ts;
1565 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1566 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1567 } 2200 }
1568#endif 2201#endif
1569 2202
1570 return ev_time (); 2203 return ev_time ();
1571} 2204}
1572 2205
1573#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1574ev_tstamp 2207ev_tstamp
1575ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1576{ 2209{
1577 return ev_rt_now; 2210 return ev_rt_now;
1578} 2211}
1579#endif 2212#endif
1580 2213
1581void 2214void
1582ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1583{ 2216{
1584 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1585 { 2218 {
1586#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1587 struct timespec ts; 2220 struct timespec ts;
1588 2221
1589 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1590 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1591#elif defined _WIN32 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1592 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1593#else 2228#else
1594 struct timeval tv; 2229 struct timeval tv;
1595 2230
1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1597 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1627 } 2262 }
1628 2263
1629 return ncur; 2264 return ncur;
1630} 2265}
1631 2266
1632static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1633array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1634{ 2270{
1635 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1636 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1637} 2273}
1638 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1639#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1640 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1641 2279
1642#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1643 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1644 { \ 2282 { \
1645 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1646 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1647 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1648 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1649 } 2287 }
1650 2288
1651#if 0 2289#if 0
1652#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1653 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1662 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1663 2301
1664/*****************************************************************************/ 2302/*****************************************************************************/
1665 2303
1666/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1667static void noinline 2305ecb_noinline
2306static void
1668pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1669{ 2308{
1670} 2309}
1671 2310
1672void noinline 2311ecb_noinline
2312void
1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1674{ 2314{
1675 W w_ = (W)w; 2315 W w_ = (W)w;
1676 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1677 2317
1678 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1679 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1680 else 2320 else
1681 { 2321 {
1682 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1684 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1685 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1686 } 2326 }
1687 2327
1688 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
1689} 2329}
1690 2330
1691inline_speed void 2331inline_speed void
1692feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1693{ 2333{
1694 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1695 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1696} 2336}
1697 2337
1698inline_size void 2338inline_size void
1699feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1734inline_speed void 2374inline_speed void
1735fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1736{ 2376{
1737 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1738 2378
1739 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1740 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1741} 2381}
1742 2382
1743void 2383void
1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1745{ 2385{
1746 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1747 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1748} 2388}
1749 2389
… …
1752inline_size void 2392inline_size void
1753fd_reify (EV_P) 2393fd_reify (EV_P)
1754{ 2394{
1755 int i; 2395 int i;
1756 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1759 { 2411 {
1760 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1762 2414
1763 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1777 } 2429 }
1778 } 2430 }
1779 } 2431 }
1780#endif 2432#endif
1781 2433
1782 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1783 { 2435 {
1784 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1785 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1786 ev_io *w; 2438 ev_io *w;
1787 2439
1788 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1789 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1790 2442
1791 anfd->reify = 0; 2443 anfd->reify = 0;
1792 2444
1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1794 { 2446 {
1795 anfd->events = 0; 2447 anfd->events = 0;
1796 2448
1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1798 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1803 2455
1804 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1805 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1806 } 2458 }
1807 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1808 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1809} 2468}
1810 2469
1811/* something about the given fd changed */ 2470/* something about the given fd changed */
1812inline_size void 2471inline_size
2472void
1813fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1814{ 2474{
1815 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1816 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1817 2477
1818 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1819 { 2479 {
1820 ++fdchangecnt; 2480 ++fdchangecnt;
1821 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1822 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1823 } 2483 }
1824} 2484}
1825 2485
1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1827inline_speed void ecb_cold 2487inline_speed ecb_cold void
1828fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1829{ 2489{
1830 ev_io *w; 2490 ev_io *w;
1831 2491
1832 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1836 } 2496 }
1837} 2497}
1838 2498
1839/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1840inline_size int ecb_cold 2500inline_size ecb_cold int
1841fd_valid (int fd) 2501fd_valid (int fd)
1842{ 2502{
1843#ifdef _WIN32 2503#ifdef _WIN32
1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1845#else 2505#else
1846 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1847#endif 2507#endif
1848} 2508}
1849 2509
1850/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1851static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1852fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1853{ 2514{
1854 int fd; 2515 int fd;
1855 2516
1856 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1858 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1859 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1860} 2521}
1861 2522
1862/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1863static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1864fd_enomem (EV_P) 2526fd_enomem (EV_P)
1865{ 2527{
1866 int fd; 2528 int fd;
1867 2529
1868 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1872 break; 2534 break;
1873 } 2535 }
1874} 2536}
1875 2537
1876/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1877static void noinline 2539ecb_noinline
2540static void
1878fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1879{ 2542{
1880 int fd; 2543 int fd;
1881 2544
1882 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1935 ev_tstamp minat; 2598 ev_tstamp minat;
1936 ANHE *minpos; 2599 ANHE *minpos;
1937 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1938 2601
1939 /* find minimum child */ 2602 /* find minimum child */
1940 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1941 { 2604 {
1942 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1943 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1944 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1945 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1946 } 2609 }
1947 else if (pos < E) 2610 else if (pos < E)
1948 { 2611 {
1949 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1950 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1951 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1952 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1953 } 2616 }
1954 else 2617 else
1955 break; 2618 break;
1956 2619
1957 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1965 2628
1966 heap [k] = he; 2629 heap [k] = he;
1967 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1968} 2631}
1969 2632
1970#else /* 4HEAP */ 2633#else /* not 4HEAP */
1971 2634
1972#define HEAP0 1 2635#define HEAP0 1
1973#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1974#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1975 2638
… …
2047 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2048} 2711}
2049 2712
2050/*****************************************************************************/ 2713/*****************************************************************************/
2051 2714
2052/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2053typedef struct 2716typedef struct
2054{ 2717{
2055 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2056#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2057 EV_P; 2720 EV_P;
… …
2063 2726
2064/*****************************************************************************/ 2727/*****************************************************************************/
2065 2728
2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2067 2730
2068static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2069evpipe_init (EV_P) 2733evpipe_init (EV_P)
2070{ 2734{
2071 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2072 { 2736 {
2073 int fds [2]; 2737 int fds [2];
… …
2084 while (pipe (fds)) 2748 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe"); 2749 ev_syserr ("(libev) error creating signal/async pipe");
2086 2750
2087 fd_intern (fds [0]); 2751 fd_intern (fds [0]);
2088 } 2752 }
2089
2090 fd_intern (fds [1]);
2091 2753
2092 evpipe [0] = fds [0]; 2754 evpipe [0] = fds [0];
2093 2755
2094 if (evpipe [1] < 0) 2756 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */ 2757 evpipe [1] = fds [1]; /* first call, set write fd */
… …
2102 2764
2103 dup2 (fds [1], evpipe [1]); 2765 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]); 2766 close (fds [1]);
2105 } 2767 }
2106 2768
2769 fd_intern (evpipe [1]);
2770
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); 2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w); 2772 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */ 2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 } 2774 }
2111} 2775}
… …
2113inline_speed void 2777inline_speed void
2114evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2115{ 2779{
2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2117 2781
2118 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2119 return; 2783 return;
2120 2784
2121 *flag = 1; 2785 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123 2787
… …
2144#endif 2808#endif
2145 { 2809 {
2146#ifdef _WIN32 2810#ifdef _WIN32
2147 WSABUF buf; 2811 WSABUF buf;
2148 DWORD sent; 2812 DWORD sent;
2149 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2150 buf.len = 1; 2814 buf.len = 1;
2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else 2816#else
2153 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2154#endif 2818#endif
… …
2200 sig_pending = 0; 2864 sig_pending = 0;
2201 2865
2202 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2203 2867
2204 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2205 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2206 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2207 } 2871 }
2208#endif 2872#endif
2209 2873
2210#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2226} 2890}
2227 2891
2228/*****************************************************************************/ 2892/*****************************************************************************/
2229 2893
2230void 2894void
2231ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2232{ 2896{
2233#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2898 EV_P;
2234 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2235 EV_P = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
2236 2901
2237 if (!EV_A) 2902 if (!EV_A)
2238 return; 2903 return;
2239#endif 2904#endif
2240 2905
… …
2250#endif 2915#endif
2251 2916
2252 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2253} 2918}
2254 2919
2255void noinline 2920ecb_noinline
2921void
2256ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2257{ 2923{
2258 WL w; 2924 WL w;
2259 2925
2260 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2261 return; 2927 return;
2262 2928
2263 --signum; 2929 --signum;
2264 2930
2265#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2266 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
2267 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2268 2934
2269 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2270 return; 2936 return;
2271#endif 2937#endif
2272 2938
2273 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2358 3024
2359#endif 3025#endif
2360 3026
2361/*****************************************************************************/ 3027/*****************************************************************************/
2362 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
2363#if EV_USE_IOCP 3078#if EV_USE_IOCP
2364# include "ev_iocp.c" 3079# include "ev_iocp.c"
2365#endif 3080#endif
2366#if EV_USE_PORT 3081#if EV_USE_PORT
2367# include "ev_port.c" 3082# include "ev_port.c"
… …
2370# include "ev_kqueue.c" 3085# include "ev_kqueue.c"
2371#endif 3086#endif
2372#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2373# include "ev_epoll.c" 3088# include "ev_epoll.c"
2374#endif 3089#endif
3090#if EV_USE_LINUXAIO
3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
3095#endif
2375#if EV_USE_POLL 3096#if EV_USE_POLL
2376# include "ev_poll.c" 3097# include "ev_poll.c"
2377#endif 3098#endif
2378#if EV_USE_SELECT 3099#if EV_USE_SELECT
2379# include "ev_select.c" 3100# include "ev_select.c"
2380#endif 3101#endif
2381 3102
2382int ecb_cold 3103ecb_cold int
2383ev_version_major (void) EV_THROW 3104ev_version_major (void) EV_NOEXCEPT
2384{ 3105{
2385 return EV_VERSION_MAJOR; 3106 return EV_VERSION_MAJOR;
2386} 3107}
2387 3108
2388int ecb_cold 3109ecb_cold int
2389ev_version_minor (void) EV_THROW 3110ev_version_minor (void) EV_NOEXCEPT
2390{ 3111{
2391 return EV_VERSION_MINOR; 3112 return EV_VERSION_MINOR;
2392} 3113}
2393 3114
2394/* return true if we are running with elevated privileges and should ignore env variables */ 3115/* return true if we are running with elevated privileges and should ignore env variables */
2395int inline_size ecb_cold 3116inline_size ecb_cold int
2396enable_secure (void) 3117enable_secure (void)
2397{ 3118{
2398#ifdef _WIN32 3119#ifdef _WIN32
2399 return 0; 3120 return 0;
2400#else 3121#else
2401 return getuid () != geteuid () 3122 return getuid () != geteuid ()
2402 || getgid () != getegid (); 3123 || getgid () != getegid ();
2403#endif 3124#endif
2404} 3125}
2405 3126
2406unsigned int ecb_cold 3127ecb_cold
3128unsigned int
2407ev_supported_backends (void) EV_THROW 3129ev_supported_backends (void) EV_NOEXCEPT
2408{ 3130{
2409 unsigned int flags = 0; 3131 unsigned int flags = 0;
2410 3132
2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2413 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2414 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2416 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
2417 return flags; 3141 return flags;
2418} 3142}
2419 3143
2420unsigned int ecb_cold 3144ecb_cold
3145unsigned int
2421ev_recommended_backends (void) EV_THROW 3146ev_recommended_backends (void) EV_NOEXCEPT
2422{ 3147{
2423 unsigned int flags = ev_supported_backends (); 3148 unsigned int flags = ev_supported_backends ();
2424 3149
2425#ifndef __NetBSD__ 3150#ifndef __NetBSD__
2426 /* kqueue is borked on everything but netbsd apparently */ 3151 /* kqueue is borked on everything but netbsd apparently */
… …
2434#endif 3159#endif
2435#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
2436 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2437#endif 3162#endif
2438 3163
3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
3172
2439 return flags; 3173 return flags;
2440} 3174}
2441 3175
2442unsigned int ecb_cold 3176ecb_cold
3177unsigned int
2443ev_embeddable_backends (void) EV_THROW 3178ev_embeddable_backends (void) EV_NOEXCEPT
2444{ 3179{
2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2446 3181
2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2449 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
2450 3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3187
2451 return flags; 3188 return flags;
2452} 3189}
2453 3190
2454unsigned int 3191unsigned int
2455ev_backend (EV_P) EV_THROW 3192ev_backend (EV_P) EV_NOEXCEPT
2456{ 3193{
2457 return backend; 3194 return backend;
2458} 3195}
2459 3196
2460#if EV_FEATURE_API 3197#if EV_FEATURE_API
2461unsigned int 3198unsigned int
2462ev_iteration (EV_P) EV_THROW 3199ev_iteration (EV_P) EV_NOEXCEPT
2463{ 3200{
2464 return loop_count; 3201 return loop_count;
2465} 3202}
2466 3203
2467unsigned int 3204unsigned int
2468ev_depth (EV_P) EV_THROW 3205ev_depth (EV_P) EV_NOEXCEPT
2469{ 3206{
2470 return loop_depth; 3207 return loop_depth;
2471} 3208}
2472 3209
2473void 3210void
2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3211ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2475{ 3212{
2476 io_blocktime = interval; 3213 io_blocktime = interval;
2477} 3214}
2478 3215
2479void 3216void
2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3217ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2481{ 3218{
2482 timeout_blocktime = interval; 3219 timeout_blocktime = interval;
2483} 3220}
2484 3221
2485void 3222void
2486ev_set_userdata (EV_P_ void *data) EV_THROW 3223ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2487{ 3224{
2488 userdata = data; 3225 userdata = data;
2489} 3226}
2490 3227
2491void * 3228void *
2492ev_userdata (EV_P) EV_THROW 3229ev_userdata (EV_P) EV_NOEXCEPT
2493{ 3230{
2494 return userdata; 3231 return userdata;
2495} 3232}
2496 3233
2497void 3234void
2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3235ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2499{ 3236{
2500 invoke_cb = invoke_pending_cb; 3237 invoke_cb = invoke_pending_cb;
2501} 3238}
2502 3239
2503void 3240void
2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3241ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2505{ 3242{
2506 release_cb = release; 3243 release_cb = release;
2507 acquire_cb = acquire; 3244 acquire_cb = acquire;
2508} 3245}
2509#endif 3246#endif
2510 3247
2511/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
2512static void noinline ecb_cold 3249ecb_noinline ecb_cold
3250static void
2513loop_init (EV_P_ unsigned int flags) EV_THROW 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2514{ 3252{
2515 if (!backend) 3253 if (!backend)
2516 { 3254 {
2517 origflags = flags; 3255 origflags = flags;
2518 3256
… …
2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2572#endif 3310#endif
2573#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2575#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
2576 3317
2577 if (!(flags & EVBACKEND_MASK)) 3318 if (!(flags & EVBACKEND_MASK))
2578 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
2579 3320
2580#if EV_USE_IOCP 3321#if EV_USE_IOCP
2581 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3322 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2582#endif 3323#endif
2583#if EV_USE_PORT 3324#if EV_USE_PORT
2584 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2585#endif 3326#endif
2586#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
2587 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3332#endif
3333#if EV_USE_LINUXAIO
3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2588#endif 3335#endif
2589#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
2590 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3337 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2591#endif 3338#endif
2592#if EV_USE_POLL 3339#if EV_USE_POLL
2593 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3340 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2594#endif 3341#endif
2595#if EV_USE_SELECT 3342#if EV_USE_SELECT
2596 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2597#endif 3344#endif
2598 3345
2599 ev_prepare_init (&pending_w, pendingcb); 3346 ev_prepare_init (&pending_w, pendingcb);
2600 3347
2601#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3348#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2604#endif 3351#endif
2605 } 3352 }
2606} 3353}
2607 3354
2608/* free up a loop structure */ 3355/* free up a loop structure */
2609void ecb_cold 3356ecb_cold
3357void
2610ev_loop_destroy (EV_P) 3358ev_loop_destroy (EV_P)
2611{ 3359{
2612 int i; 3360 int i;
2613 3361
2614#if EV_MULTIPLICITY 3362#if EV_MULTIPLICITY
… …
2617 return; 3365 return;
2618#endif 3366#endif
2619 3367
2620#if EV_CLEANUP_ENABLE 3368#if EV_CLEANUP_ENABLE
2621 /* queue cleanup watchers (and execute them) */ 3369 /* queue cleanup watchers (and execute them) */
2622 if (expect_false (cleanupcnt)) 3370 if (ecb_expect_false (cleanupcnt))
2623 { 3371 {
2624 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2625 EV_INVOKE_PENDING; 3373 EV_INVOKE_PENDING;
2626 } 3374 }
2627#endif 3375#endif
… …
2646#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
2647 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
2648 close (sigfd); 3396 close (sigfd);
2649#endif 3397#endif
2650 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
2651#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2652 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
2653 close (fs_fd); 3406 close (fs_fd);
2654#endif 3407#endif
2655 3408
2656 if (backend_fd >= 0) 3409 if (backend_fd >= 0)
2657 close (backend_fd); 3410 close (backend_fd);
2658 3411
2659#if EV_USE_IOCP 3412#if EV_USE_IOCP
2660 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3413 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2661#endif 3414#endif
2662#if EV_USE_PORT 3415#if EV_USE_PORT
2663 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2664#endif 3417#endif
2665#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
2666 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3423#endif
3424#if EV_USE_LINUXAIO
3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2667#endif 3426#endif
2668#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
2669 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3428 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2670#endif 3429#endif
2671#if EV_USE_POLL 3430#if EV_USE_POLL
2672 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3431 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2673#endif 3432#endif
2674#if EV_USE_SELECT 3433#if EV_USE_SELECT
2675 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3434 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2676#endif 3435#endif
2677 3436
2678 for (i = NUMPRI; i--; ) 3437 for (i = NUMPRI; i--; )
2679 { 3438 {
2680 array_free (pending, [i]); 3439 array_free (pending, [i]);
… …
2722 3481
2723inline_size void 3482inline_size void
2724loop_fork (EV_P) 3483loop_fork (EV_P)
2725{ 3484{
2726#if EV_USE_PORT 3485#if EV_USE_PORT
2727 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2728#endif 3487#endif
2729#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
2730 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3494#if EV_USE_LINUXAIO
3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2731#endif 3496#endif
2732#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
2733 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2734#endif 3499#endif
2735#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
2736 infy_fork (EV_A); 3501 infy_fork (EV_A);
2737#endif 3502#endif
2738 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2740 if (ev_is_active (&pipe_w)) 3526 if (ev_is_active (&pipe_w))
2741 { 3527 {
2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2743 3529
2744 ev_ref (EV_A); 3530 ev_ref (EV_A);
2745 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
2746 3532
2747 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
2748 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
2749 3535
2750 evpipe_init (EV_A); 3536 evpipe_init (EV_A);
2751 /* iterate over everything, in case we missed something before */ 3537 /* iterate over everything, in case we missed something before */
2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3539 }
3540 #endif
2753 } 3541 }
2754#endif
2755 3542
2756 postfork = 0; 3543 postfork = 0;
2757} 3544}
2758 3545
2759#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
2760 3547
3548ecb_cold
2761struct ev_loop * ecb_cold 3549struct ev_loop *
2762ev_loop_new (unsigned int flags) EV_THROW 3550ev_loop_new (unsigned int flags) EV_NOEXCEPT
2763{ 3551{
2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3552 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2765 3553
2766 memset (EV_A, 0, sizeof (struct ev_loop)); 3554 memset (EV_A, 0, sizeof (struct ev_loop));
2767 loop_init (EV_A_ flags); 3555 loop_init (EV_A_ flags);
… …
2774} 3562}
2775 3563
2776#endif /* multiplicity */ 3564#endif /* multiplicity */
2777 3565
2778#if EV_VERIFY 3566#if EV_VERIFY
2779static void noinline ecb_cold 3567ecb_noinline ecb_cold
3568static void
2780verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
2781{ 3570{
2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2783 3572
2784 if (w->pending) 3573 if (w->pending)
2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2786} 3575}
2787 3576
2788static void noinline ecb_cold 3577ecb_noinline ecb_cold
3578static void
2789verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
2790{ 3580{
2791 int i; 3581 int i;
2792 3582
2793 for (i = HEAP0; i < N + HEAP0; ++i) 3583 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2798 3588
2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2800 } 3590 }
2801} 3591}
2802 3592
2803static void noinline ecb_cold 3593ecb_noinline ecb_cold
3594static void
2804array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
2805{ 3596{
2806 while (cnt--) 3597 while (cnt--)
2807 { 3598 {
2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3599 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2811} 3602}
2812#endif 3603#endif
2813 3604
2814#if EV_FEATURE_API 3605#if EV_FEATURE_API
2815void ecb_cold 3606void ecb_cold
2816ev_verify (EV_P) EV_THROW 3607ev_verify (EV_P) EV_NOEXCEPT
2817{ 3608{
2818#if EV_VERIFY 3609#if EV_VERIFY
2819 int i; 3610 int i;
2820 WL w, w2; 3611 WL w, w2;
2821 3612
… …
2897#endif 3688#endif
2898} 3689}
2899#endif 3690#endif
2900 3691
2901#if EV_MULTIPLICITY 3692#if EV_MULTIPLICITY
3693ecb_cold
2902struct ev_loop * ecb_cold 3694struct ev_loop *
2903#else 3695#else
2904int 3696int
2905#endif 3697#endif
2906ev_default_loop (unsigned int flags) EV_THROW 3698ev_default_loop (unsigned int flags) EV_NOEXCEPT
2907{ 3699{
2908 if (!ev_default_loop_ptr) 3700 if (!ev_default_loop_ptr)
2909 { 3701 {
2910#if EV_MULTIPLICITY 3702#if EV_MULTIPLICITY
2911 EV_P = ev_default_loop_ptr = &default_loop_struct; 3703 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2930 3722
2931 return ev_default_loop_ptr; 3723 return ev_default_loop_ptr;
2932} 3724}
2933 3725
2934void 3726void
2935ev_loop_fork (EV_P) EV_THROW 3727ev_loop_fork (EV_P) EV_NOEXCEPT
2936{ 3728{
2937 postfork = 1; 3729 postfork = 1;
2938} 3730}
2939 3731
2940/*****************************************************************************/ 3732/*****************************************************************************/
… …
2944{ 3736{
2945 EV_CB_INVOKE ((W)w, revents); 3737 EV_CB_INVOKE ((W)w, revents);
2946} 3738}
2947 3739
2948unsigned int 3740unsigned int
2949ev_pending_count (EV_P) EV_THROW 3741ev_pending_count (EV_P) EV_NOEXCEPT
2950{ 3742{
2951 int pri; 3743 int pri;
2952 unsigned int count = 0; 3744 unsigned int count = 0;
2953 3745
2954 for (pri = NUMPRI; pri--; ) 3746 for (pri = NUMPRI; pri--; )
2955 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
2956 3748
2957 return count; 3749 return count;
2958} 3750}
2959 3751
2960void noinline 3752ecb_noinline
3753void
2961ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
2962{ 3755{
2963 pendingpri = NUMPRI; 3756 pendingpri = NUMPRI;
2964 3757
2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3758 do
2966 { 3759 {
2967 --pendingpri; 3760 --pendingpri;
2968 3761
3762 /* pendingpri possibly gets modified in the inner loop */
2969 while (pendingcnt [pendingpri]) 3763 while (pendingcnt [pendingpri])
2970 { 3764 {
2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3765 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2972 3766
2973 p->w->pending = 0; 3767 p->w->pending = 0;
2974 EV_CB_INVOKE (p->w, p->events); 3768 EV_CB_INVOKE (p->w, p->events);
2975 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2976 } 3770 }
2977 } 3771 }
3772 while (pendingpri);
2978} 3773}
2979 3774
2980#if EV_IDLE_ENABLE 3775#if EV_IDLE_ENABLE
2981/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
2982/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
2983inline_size void 3778inline_size void
2984idle_reify (EV_P) 3779idle_reify (EV_P)
2985{ 3780{
2986 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
2987 { 3782 {
2988 int pri; 3783 int pri;
2989 3784
2990 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
2991 { 3786 {
… …
3021 { 3816 {
3022 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
3023 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
3024 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
3025 3820
3026 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3027 3822
3028 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
3029 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
3030 } 3825 }
3031 else 3826 else
… …
3040 } 3835 }
3041} 3836}
3042 3837
3043#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
3044 3839
3045static void noinline 3840ecb_noinline
3841static void
3046periodic_recalc (EV_P_ ev_periodic *w) 3842periodic_recalc (EV_P_ ev_periodic *w)
3047{ 3843{
3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3050 3846
… …
3052 while (at <= ev_rt_now) 3848 while (at <= ev_rt_now)
3053 { 3849 {
3054 ev_tstamp nat = at + w->interval; 3850 ev_tstamp nat = at + w->interval;
3055 3851
3056 /* when resolution fails us, we use ev_rt_now */ 3852 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at)) 3853 if (ecb_expect_false (nat == at))
3058 { 3854 {
3059 at = ev_rt_now; 3855 at = ev_rt_now;
3060 break; 3856 break;
3061 } 3857 }
3062 3858
… …
3108 } 3904 }
3109} 3905}
3110 3906
3111/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
3112/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
3113static void noinline ecb_cold 3909ecb_noinline ecb_cold
3910static void
3114periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
3115{ 3912{
3116 int i; 3913 int i;
3117 3914
3118 /* adjust periodics after time jump */ 3915 /* adjust periodics after time jump */
… …
3131 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
3132} 3929}
3133#endif 3930#endif
3134 3931
3135/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
3136static void noinline ecb_cold 3933ecb_noinline ecb_cold
3934static void
3137timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
3138{ 3936{
3139 int i; 3937 int i;
3140 3938
3141 for (i = 0; i < timercnt; ++i) 3939 for (i = 0; i < timercnt; ++i)
… …
3150/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
3151inline_speed void 3949inline_speed void
3152time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
3153{ 3951{
3154#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
3155 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
3156 { 3954 {
3157 int i; 3955 int i;
3158 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
3159 3957
3160 mn_now = get_clock (); 3958 mn_now = get_clock ();
3161 3959
3162 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3163 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
3164 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3165 { 3963 {
3166 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
3167 return; 3965 return;
3168 } 3966 }
3169 3967
… …
3183 ev_tstamp diff; 3981 ev_tstamp diff;
3184 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
3185 3983
3186 diff = odiff - rtmn_diff; 3984 diff = odiff - rtmn_diff;
3187 3985
3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3189 return; /* all is well */ 3987 return; /* all is well */
3190 3988
3191 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
3192 mn_now = get_clock (); 3990 mn_now = get_clock ();
3193 now_floor = mn_now; 3991 now_floor = mn_now;
… …
3202 else 4000 else
3203#endif 4001#endif
3204 { 4002 {
3205 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
3206 4004
3207 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3208 { 4006 {
3209 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
3210 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3211#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
3212 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
3235#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
3236 ev_verify (EV_A); 4034 ev_verify (EV_A);
3237#endif 4035#endif
3238 4036
3239#ifndef _WIN32 4037#ifndef _WIN32
3240 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3241 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
3242 { 4040 {
3243 curpid = getpid (); 4041 curpid = getpid ();
3244 postfork = 1; 4042 postfork = 1;
3245 } 4043 }
3246#endif 4044#endif
3247 4045
3248#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
3249 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
3250 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
3251 if (forkcnt) 4049 if (forkcnt)
3252 { 4050 {
3253 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3254 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
3255 } 4053 }
3256#endif 4054#endif
3257 4055
3258#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
3259 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
3260 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
3261 { 4059 {
3262 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3263 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
3264 } 4062 }
3265#endif 4063#endif
3266 4064
3267 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
3268 break; 4066 break;
3269 4067
3270 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
3271 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
3272 loop_fork (EV_A); 4070 loop_fork (EV_A);
3273 4071
3274 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
3275 fd_reify (EV_A); 4073 fd_reify (EV_A);
3276 4074
… …
3281 4079
3282 /* remember old timestamp for io_blocktime calculation */ 4080 /* remember old timestamp for io_blocktime calculation */
3283 ev_tstamp prev_mn_now = mn_now; 4081 ev_tstamp prev_mn_now = mn_now;
3284 4082
3285 /* update time to cancel out callback processing overhead */ 4083 /* update time to cancel out callback processing overhead */
3286 time_update (EV_A_ 1e100); 4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3287 4085
3288 /* from now on, we want a pipe-wake-up */ 4086 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1; 4087 pipe_write_wanted = 1;
3290 4088
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292 4090
3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3294 { 4092 {
3295 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
3296 4100
3297 if (timercnt) 4101 if (timercnt)
3298 { 4102 {
3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3300 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
… …
3307 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
3308 } 4112 }
3309#endif 4113#endif
3310 4114
3311 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
3312 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
3313 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
3314 4118
3315 /* at this point, we NEED to wait, so we have to ensure */ 4119 /* now there are two more special cases left, either we have
3316 /* to pass a minimum nonzero value to the backend */ 4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
3317 if (expect_false (waittime < backend_mintime)) 4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
3318 waittime = backend_mintime; 4127 : backend_mintime;
3319 4128
3320 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
3321 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
3322 { 4131 {
3323 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3324 4133
3325 if (sleeptime > waittime - backend_mintime) 4134 if (sleeptime > waittime - backend_mintime)
3326 sleeptime = waittime - backend_mintime; 4135 sleeptime = waittime - backend_mintime;
3327 4136
3328 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3329 { 4138 {
3330 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
3331 waittime -= sleeptime; 4140 waittime -= sleeptime;
3332 } 4141 }
3333 } 4142 }
… …
3347 { 4156 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 } 4159 }
3351 4160
3352
3353 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
3354 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
3355 } 4163 }
3356 4164
3357 /* queue pending timers and reschedule them */ 4165 /* queue pending timers and reschedule them */
… …
3365 idle_reify (EV_A); 4173 idle_reify (EV_A);
3366#endif 4174#endif
3367 4175
3368#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
3369 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
3370 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
3371 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3372#endif 4180#endif
3373 4181
3374 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
3375 } 4183 }
3376 while (expect_true ( 4184 while (ecb_expect_true (
3377 activecnt 4185 activecnt
3378 && !loop_done 4186 && !loop_done
3379 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3380 )); 4188 ));
3381 4189
… …
3388 4196
3389 return activecnt; 4197 return activecnt;
3390} 4198}
3391 4199
3392void 4200void
3393ev_break (EV_P_ int how) EV_THROW 4201ev_break (EV_P_ int how) EV_NOEXCEPT
3394{ 4202{
3395 loop_done = how; 4203 loop_done = how;
3396} 4204}
3397 4205
3398void 4206void
3399ev_ref (EV_P) EV_THROW 4207ev_ref (EV_P) EV_NOEXCEPT
3400{ 4208{
3401 ++activecnt; 4209 ++activecnt;
3402} 4210}
3403 4211
3404void 4212void
3405ev_unref (EV_P) EV_THROW 4213ev_unref (EV_P) EV_NOEXCEPT
3406{ 4214{
3407 --activecnt; 4215 --activecnt;
3408} 4216}
3409 4217
3410void 4218void
3411ev_now_update (EV_P) EV_THROW 4219ev_now_update (EV_P) EV_NOEXCEPT
3412{ 4220{
3413 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
3414} 4222}
3415 4223
3416void 4224void
3417ev_suspend (EV_P) EV_THROW 4225ev_suspend (EV_P) EV_NOEXCEPT
3418{ 4226{
3419 ev_now_update (EV_A); 4227 ev_now_update (EV_A);
3420} 4228}
3421 4229
3422void 4230void
3423ev_resume (EV_P) EV_THROW 4231ev_resume (EV_P) EV_NOEXCEPT
3424{ 4232{
3425 ev_tstamp mn_prev = mn_now; 4233 ev_tstamp mn_prev = mn_now;
3426 4234
3427 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3428 timers_reschedule (EV_A_ mn_now - mn_prev); 4236 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3445inline_size void 4253inline_size void
3446wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
3447{ 4255{
3448 while (*head) 4256 while (*head)
3449 { 4257 {
3450 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
3451 { 4259 {
3452 *head = elem->next; 4260 *head = elem->next;
3453 break; 4261 break;
3454 } 4262 }
3455 4263
… …
3467 w->pending = 0; 4275 w->pending = 0;
3468 } 4276 }
3469} 4277}
3470 4278
3471int 4279int
3472ev_clear_pending (EV_P_ void *w) EV_THROW 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3473{ 4281{
3474 W w_ = (W)w; 4282 W w_ = (W)w;
3475 int pending = w_->pending; 4283 int pending = w_->pending;
3476 4284
3477 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
3478 { 4286 {
3479 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3480 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
3481 w_->pending = 0; 4289 w_->pending = 0;
3482 return p->events; 4290 return p->events;
… …
3509 w->active = 0; 4317 w->active = 0;
3510} 4318}
3511 4319
3512/*****************************************************************************/ 4320/*****************************************************************************/
3513 4321
3514void noinline 4322ecb_noinline
4323void
3515ev_io_start (EV_P_ ev_io *w) EV_THROW 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3516{ 4325{
3517 int fd = w->fd; 4326 int fd = w->fd;
3518 4327
3519 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
3520 return; 4329 return;
3521 4330
3522 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3523 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3524 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
3525 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3526 4338
3527 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3529 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
3530 4342
3531 /* common bug, apparently */ 4343 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4344 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533 4345
… …
3535 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
3536 4348
3537 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3538} 4350}
3539 4351
3540void noinline 4352ecb_noinline
4353void
3541ev_io_stop (EV_P_ ev_io *w) EV_THROW 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3542{ 4355{
3543 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
3544 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
3545 return; 4358 return;
3546 4359
3547 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3548 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
3549 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3550 4366
3551 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
3552 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
3553 4369
3554 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3555 4371
3556 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3557} 4373}
3558 4374
3559void noinline 4375ecb_noinline
4376void
3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3561{ 4378{
3562 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
3563 return; 4380 return;
3564 4381
3565 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
3566 4383
3567 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3568 4385
3569 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3570 4387
3571 ++timercnt; 4388 ++timercnt;
3572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4389 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4390 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3574 ANHE_w (timers [ev_active (w)]) = (WT)w; 4391 ANHE_w (timers [ev_active (w)]) = (WT)w;
3575 ANHE_at_cache (timers [ev_active (w)]); 4392 ANHE_at_cache (timers [ev_active (w)]);
3576 upheap (timers, ev_active (w)); 4393 upheap (timers, ev_active (w));
3577 4394
3578 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3579 4396
3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3581} 4398}
3582 4399
3583void noinline 4400ecb_noinline
4401void
3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3585{ 4403{
3586 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3587 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3588 return; 4406 return;
3589 4407
3590 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3591 4409
3592 { 4410 {
… …
3594 4412
3595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3596 4414
3597 --timercnt; 4415 --timercnt;
3598 4416
3599 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
3600 { 4418 {
3601 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
3602 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
3603 } 4421 }
3604 } 4422 }
… …
3608 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
3609 4427
3610 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
3611} 4429}
3612 4430
3613void noinline 4431ecb_noinline
4432void
3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3615{ 4434{
3616 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3617 4436
3618 clear_pending (EV_A_ (W)w); 4437 clear_pending (EV_A_ (W)w);
3619 4438
… …
3636 4455
3637 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3638} 4457}
3639 4458
3640ev_tstamp 4459ev_tstamp
3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3642{ 4461{
3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3644} 4463}
3645 4464
3646#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
3647void noinline 4466ecb_noinline
4467void
3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3649{ 4469{
3650 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
3651 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
3652 4477
3653 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3655 else if (w->interval) 4480 else if (w->interval)
3656 { 4481 {
… …
3662 4487
3663 EV_FREQUENT_CHECK; 4488 EV_FREQUENT_CHECK;
3664 4489
3665 ++periodiccnt; 4490 ++periodiccnt;
3666 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4491 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3667 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4492 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3668 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4493 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3669 ANHE_at_cache (periodics [ev_active (w)]); 4494 ANHE_at_cache (periodics [ev_active (w)]);
3670 upheap (periodics, ev_active (w)); 4495 upheap (periodics, ev_active (w));
3671 4496
3672 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
3673 4498
3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3675} 4500}
3676 4501
3677void noinline 4502ecb_noinline
4503void
3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3679{ 4505{
3680 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3681 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3682 return; 4508 return;
3683 4509
3684 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3685 4511
3686 { 4512 {
… …
3688 4514
3689 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3690 4516
3691 --periodiccnt; 4517 --periodiccnt;
3692 4518
3693 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
3694 { 4520 {
3695 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
3696 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
3697 } 4523 }
3698 } 4524 }
… …
3700 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
3701 4527
3702 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
3703} 4529}
3704 4530
3705void noinline 4531ecb_noinline
4532void
3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3707{ 4534{
3708 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
3709 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
3710 ev_periodic_start (EV_A_ w); 4537 ev_periodic_start (EV_A_ w);
3711} 4538}
… …
3715# define SA_RESTART 0 4542# define SA_RESTART 0
3716#endif 4543#endif
3717 4544
3718#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
3719 4546
3720void noinline 4547ecb_noinline
4548void
3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3722{ 4550{
3723 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
3724 return; 4552 return;
3725 4553
3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3727 4555
3728#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
… …
3797 } 4625 }
3798 4626
3799 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3800} 4628}
3801 4629
3802void noinline 4630ecb_noinline
4631void
3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3804{ 4633{
3805 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
3806 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
3807 return; 4636 return;
3808 4637
3809 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
3810 4639
3811 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3839#endif 4668#endif
3840 4669
3841#if EV_CHILD_ENABLE 4670#if EV_CHILD_ENABLE
3842 4671
3843void 4672void
3844ev_child_start (EV_P_ ev_child *w) EV_THROW 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3845{ 4674{
3846#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3848#endif 4677#endif
3849 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
3850 return; 4679 return;
3851 4680
3852 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3853 4682
3854 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
3856 4685
3857 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
3858} 4687}
3859 4688
3860void 4689void
3861ev_child_stop (EV_P_ ev_child *w) EV_THROW 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3862{ 4691{
3863 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
3864 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
3865 return; 4694 return;
3866 4695
3867 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
3868 4697
3869 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3883 4712
3884#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
3885#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3886#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
3887 4716
3888static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3889 4718
3890#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
3891 4720
3892/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3894 4723
3895static void noinline 4724ecb_noinline
4725static void
3896infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
3897{ 4727{
3898 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); 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4730 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4731 | IN_DONT_FOLLOW | IN_MASK_ADD);
3899 4732
3900 if (w->wd >= 0) 4733 if (w->wd >= 0)
3901 { 4734 {
3902 struct statfs sfs; 4735 struct statfs sfs;
3903 4736
… …
3907 4740
3908 if (!fs_2625) 4741 if (!fs_2625)
3909 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4742 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3910 else if (!statfs (w->path, &sfs) 4743 else if (!statfs (w->path, &sfs)
3911 && (sfs.f_type == 0x1373 /* devfs */ 4744 && (sfs.f_type == 0x1373 /* devfs */
4745 || sfs.f_type == 0x4006 /* fat */
4746 || sfs.f_type == 0x4d44 /* msdos */
3912 || sfs.f_type == 0xEF53 /* ext2/3 */ 4747 || sfs.f_type == 0xEF53 /* ext2/3 */
4748 || sfs.f_type == 0x72b6 /* jffs2 */
4749 || sfs.f_type == 0x858458f6 /* ramfs */
4750 || sfs.f_type == 0x5346544e /* ntfs */
3913 || sfs.f_type == 0x3153464a /* jfs */ 4751 || sfs.f_type == 0x3153464a /* jfs */
4752 || sfs.f_type == 0x9123683e /* btrfs */
3914 || sfs.f_type == 0x52654973 /* reiser3 */ 4753 || sfs.f_type == 0x52654973 /* reiser3 */
3915 || sfs.f_type == 0x01021994 /* tempfs */ 4754 || sfs.f_type == 0x01021994 /* tmpfs */
3916 || sfs.f_type == 0x58465342 /* xfs */)) 4755 || sfs.f_type == 0x58465342 /* xfs */))
3917 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4756 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3918 else 4757 else
3919 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4758 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3920 } 4759 }
… …
3955 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3956 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
3957 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3958} 4797}
3959 4798
3960static void noinline 4799ecb_noinline
4800static void
3961infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
3962{ 4802{
3963 int slot; 4803 int slot;
3964 int wd = w->wd; 4804 int wd = w->wd;
3965 4805
… …
3972 4812
3973 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
3974 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
3975} 4815}
3976 4816
3977static void noinline 4817ecb_noinline
4818static void
3978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3979{ 4820{
3980 if (slot < 0) 4821 if (slot < 0)
3981 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
3982 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4823 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4018 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4859 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4019 ofs += sizeof (struct inotify_event) + ev->len; 4860 ofs += sizeof (struct inotify_event) + ev->len;
4020 } 4861 }
4021} 4862}
4022 4863
4023inline_size void ecb_cold 4864inline_size ecb_cold
4865void
4024ev_check_2625 (EV_P) 4866ev_check_2625 (EV_P)
4025{ 4867{
4026 /* kernels < 2.6.25 are borked 4868 /* kernels < 2.6.25 are borked
4027 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4869 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4028 */ 4870 */
… …
4118#else 4960#else
4119# define EV_LSTAT(p,b) lstat (p, b) 4961# define EV_LSTAT(p,b) lstat (p, b)
4120#endif 4962#endif
4121 4963
4122void 4964void
4123ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4965ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4124{ 4966{
4125 if (lstat (w->path, &w->attr) < 0) 4967 if (lstat (w->path, &w->attr) < 0)
4126 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
4127 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
4128 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
4129} 4971}
4130 4972
4131static void noinline 4973ecb_noinline
4974static void
4132stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4133{ 4976{
4134 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4135 4978
4136 ev_statdata prev = w->attr; 4979 ev_statdata prev = w->attr;
… …
4167 ev_feed_event (EV_A_ w, EV_STAT); 5010 ev_feed_event (EV_A_ w, EV_STAT);
4168 } 5011 }
4169} 5012}
4170 5013
4171void 5014void
4172ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4173{ 5016{
4174 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
4175 return; 5018 return;
4176 5019
4177 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
4178 5021
4179 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4198 5041
4199 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4200} 5043}
4201 5044
4202void 5045void
4203ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4204{ 5047{
4205 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
4207 return; 5050 return;
4208 5051
4209 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
4210 5053
4211#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
4224} 5067}
4225#endif 5068#endif
4226 5069
4227#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
4228void 5071void
4229ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4230{ 5073{
4231 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
4232 return; 5075 return;
4233 5076
4234 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
4235 5078
4236 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
4239 int active = ++idlecnt [ABSPRI (w)]; 5082 int active = ++idlecnt [ABSPRI (w)];
4240 5083
4241 ++idleall; 5084 ++idleall;
4242 ev_start (EV_A_ (W)w, active); 5085 ev_start (EV_A_ (W)w, active);
4243 5086
4244 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4245 idles [ABSPRI (w)][active - 1] = w; 5088 idles [ABSPRI (w)][active - 1] = w;
4246 } 5089 }
4247 5090
4248 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
4249} 5092}
4250 5093
4251void 5094void
4252ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4253{ 5096{
4254 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
4255 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
4256 return; 5099 return;
4257 5100
4258 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
4259 5102
4260 { 5103 {
… …
4271} 5114}
4272#endif 5115#endif
4273 5116
4274#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
4275void 5118void
4276ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4277{ 5120{
4278 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
4279 return; 5122 return;
4280 5123
4281 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
4282 5125
4283 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
4284 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5127 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4285 prepares [preparecnt - 1] = w; 5128 prepares [preparecnt - 1] = w;
4286 5129
4287 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
4288} 5131}
4289 5132
4290void 5133void
4291ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4292{ 5135{
4293 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
4294 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
4295 return; 5138 return;
4296 5139
4297 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4298 5141
4299 { 5142 {
… …
4309} 5152}
4310#endif 5153#endif
4311 5154
4312#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
4313void 5156void
4314ev_check_start (EV_P_ ev_check *w) EV_THROW 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4315{ 5158{
4316 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
4317 return; 5160 return;
4318 5161
4319 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4320 5163
4321 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
4322 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5165 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4323 checks [checkcnt - 1] = w; 5166 checks [checkcnt - 1] = w;
4324 5167
4325 EV_FREQUENT_CHECK; 5168 EV_FREQUENT_CHECK;
4326} 5169}
4327 5170
4328void 5171void
4329ev_check_stop (EV_P_ ev_check *w) EV_THROW 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4330{ 5173{
4331 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
4332 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
4333 return; 5176 return;
4334 5177
4335 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4336 5179
4337 { 5180 {
… …
4346 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4347} 5190}
4348#endif 5191#endif
4349 5192
4350#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
4351void noinline 5194ecb_noinline
5195void
4352ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4353{ 5197{
4354 ev_run (w->other, EVRUN_NOWAIT); 5198 ev_run (w->other, EVRUN_NOWAIT);
4355} 5199}
4356 5200
4357static void 5201static void
… …
4379 ev_run (EV_A_ EVRUN_NOWAIT); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
4380 } 5224 }
4381 } 5225 }
4382} 5226}
4383 5227
5228#if EV_FORK_ENABLE
4384static void 5229static void
4385embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4386{ 5231{
4387 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4388 5233
… …
4395 ev_run (EV_A_ EVRUN_NOWAIT); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
4396 } 5241 }
4397 5242
4398 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
4399} 5244}
5245#endif
4400 5246
4401#if 0 5247#if 0
4402static void 5248static void
4403embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4404{ 5250{
4405 ev_idle_stop (EV_A_ idle); 5251 ev_idle_stop (EV_A_ idle);
4406} 5252}
4407#endif 5253#endif
4408 5254
4409void 5255void
4410ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4411{ 5257{
4412 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
4413 return; 5259 return;
4414 5260
4415 { 5261 {
4416 EV_P = w->other; 5262 EV_P = w->other;
4417 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4425 5271
4426 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
4427 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
4428 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
4429 5275
5276#if EV_FORK_ENABLE
4430 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
4431 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
4432 5280
4433 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4434 5282
4435 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
4436 5284
4437 EV_FREQUENT_CHECK; 5285 EV_FREQUENT_CHECK;
4438} 5286}
4439 5287
4440void 5288void
4441ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4442{ 5290{
4443 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
4444 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
4445 return; 5293 return;
4446 5294
4447 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
4448 5296
4449 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
4450 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
4451 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
4452 5302
4453 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
4454 5304
4455 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
4456} 5306}
4457#endif 5307#endif
4458 5308
4459#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
4460void 5310void
4461ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4462{ 5312{
4463 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
4464 return; 5314 return;
4465 5315
4466 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
4467 5317
4468 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
4469 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5319 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4470 forks [forkcnt - 1] = w; 5320 forks [forkcnt - 1] = w;
4471 5321
4472 EV_FREQUENT_CHECK; 5322 EV_FREQUENT_CHECK;
4473} 5323}
4474 5324
4475void 5325void
4476ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4477{ 5327{
4478 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
4479 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
4480 return; 5330 return;
4481 5331
4482 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4483 5333
4484 { 5334 {
… …
4494} 5344}
4495#endif 5345#endif
4496 5346
4497#if EV_CLEANUP_ENABLE 5347#if EV_CLEANUP_ENABLE
4498void 5348void
4499ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4500{ 5350{
4501 if (expect_false (ev_is_active (w))) 5351 if (ecb_expect_false (ev_is_active (w)))
4502 return; 5352 return;
4503 5353
4504 EV_FREQUENT_CHECK; 5354 EV_FREQUENT_CHECK;
4505 5355
4506 ev_start (EV_A_ (W)w, ++cleanupcnt); 5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
4507 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5357 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4508 cleanups [cleanupcnt - 1] = w; 5358 cleanups [cleanupcnt - 1] = w;
4509 5359
4510 /* cleanup watchers should never keep a refcount on the loop */ 5360 /* cleanup watchers should never keep a refcount on the loop */
4511 ev_unref (EV_A); 5361 ev_unref (EV_A);
4512 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4513} 5363}
4514 5364
4515void 5365void
4516ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4517{ 5367{
4518 clear_pending (EV_A_ (W)w); 5368 clear_pending (EV_A_ (W)w);
4519 if (expect_false (!ev_is_active (w))) 5369 if (ecb_expect_false (!ev_is_active (w)))
4520 return; 5370 return;
4521 5371
4522 EV_FREQUENT_CHECK; 5372 EV_FREQUENT_CHECK;
4523 ev_ref (EV_A); 5373 ev_ref (EV_A);
4524 5374
… …
4535} 5385}
4536#endif 5386#endif
4537 5387
4538#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
4539void 5389void
4540ev_async_start (EV_P_ ev_async *w) EV_THROW 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4541{ 5391{
4542 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
4543 return; 5393 return;
4544 5394
4545 w->sent = 0; 5395 w->sent = 0;
4546 5396
4547 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
4548 5398
4549 EV_FREQUENT_CHECK; 5399 EV_FREQUENT_CHECK;
4550 5400
4551 ev_start (EV_A_ (W)w, ++asynccnt); 5401 ev_start (EV_A_ (W)w, ++asynccnt);
4552 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5402 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4553 asyncs [asynccnt - 1] = w; 5403 asyncs [asynccnt - 1] = w;
4554 5404
4555 EV_FREQUENT_CHECK; 5405 EV_FREQUENT_CHECK;
4556} 5406}
4557 5407
4558void 5408void
4559ev_async_stop (EV_P_ ev_async *w) EV_THROW 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4560{ 5410{
4561 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
4562 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
4563 return; 5413 return;
4564 5414
4565 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4566 5416
4567 { 5417 {
… …
4575 5425
4576 EV_FREQUENT_CHECK; 5426 EV_FREQUENT_CHECK;
4577} 5427}
4578 5428
4579void 5429void
4580ev_async_send (EV_P_ ev_async *w) EV_THROW 5430ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4581{ 5431{
4582 w->sent = 1; 5432 w->sent = 1;
4583 evpipe_write (EV_A_ &async_pending); 5433 evpipe_write (EV_A_ &async_pending);
4584} 5434}
4585#endif 5435#endif
… …
4622 5472
4623 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5473 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4624} 5474}
4625 5475
4626void 5476void
4627ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5477ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4628{ 5478{
4629 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5479 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4630
4631 if (expect_false (!once))
4632 {
4633 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4634 return;
4635 }
4636 5480
4637 once->cb = cb; 5481 once->cb = cb;
4638 once->arg = arg; 5482 once->arg = arg;
4639 5483
4640 ev_init (&once->io, once_cb_io); 5484 ev_init (&once->io, once_cb_io);
… …
4653} 5497}
4654 5498
4655/*****************************************************************************/ 5499/*****************************************************************************/
4656 5500
4657#if EV_WALK_ENABLE 5501#if EV_WALK_ENABLE
4658void ecb_cold 5502ecb_cold
5503void
4659ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5504ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4660{ 5505{
4661 int i, j; 5506 int i, j;
4662 ev_watcher_list *wl, *wn; 5507 ev_watcher_list *wl, *wn;
4663 5508
4664 if (types & (EV_IO | EV_EMBED)) 5509 if (types & (EV_IO | EV_EMBED))

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