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Comparing libev/ev.c (file contents):
Revision 1.457 by root, Thu Sep 5 18:45:29 2013 UTC vs.
Revision 1.533 by root, Sun Jul 12 13:39:38 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) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
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
… …
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
360#endif 419#endif
361 420
362#ifdef ANDROID 421#ifdef __ANDROID__
363/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT 423# undef EV_USE_SELECT
365# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
381# include <sys/syscall.h> 440# include <sys/syscall.h>
382# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
384# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
386# else 446# else
387# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
388# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
389# endif 449# endif
390#endif 450#endif
… …
404#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
405# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
406# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
407#endif 467#endif
408 468
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
475#endif
476
409#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
410/* 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 */
411# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
412# 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_register && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_register 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
413# endif 506# endif
414#endif 507#endif
415 508
416#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
417# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
422# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
423# endif 516# endif
424#endif 517#endif
425 518
426#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
427/* 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 */
428# include <stdint.h> 521# include <stdint.h>
429# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
430# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
431# endif 524# endif
432# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
438# endif 531# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif 533#endif
441 534
442#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
443/* 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 */
444# include <stdint.h> 537# include <stdint.h>
445# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
447# endif 540# endif
448# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
450# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
451# else 544# else
452# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
453# endif 546# endif
454# endif 547# endif
455EV_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);
456 549
457struct signalfd_siginfo 550struct signalfd_siginfo
458{ 551{
459 uint32_t ssi_signo; 552 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
461}; 554};
462#endif 555#endif
463 556
464/**/ 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/*****************************************************************************/
465 568
466#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
467# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
468#else 571#else
469# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
474 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
475 */ 578 */
476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
478 581
479#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) */
480#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 */
481 585
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
482#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)
483#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
484 603
485/* 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 */
486/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
487/* 606/*
488 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
489 * 608 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved. 611 * All rights reserved.
493 * 612 *
494 * 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-
495 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
509 * 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;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * 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
513 * 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.
514 */ 644 */
515 645
516#ifndef ECB_H 646#ifndef ECB_H
517#define ECB_H 647#define ECB_H
518 648
519/* 16 bits major, 16 bits minor */ 649/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003 650#define ECB_VERSION 0x00010008
521 651
522#ifdef _WIN32 652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
523 typedef signed char int8_t; 655 typedef signed char int8_t;
524 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;
525 typedef signed short int16_t; 659 typedef signed short int16_t;
526 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;
527 typedef signed int int32_t; 663 typedef signed int int32_t;
528 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;
529 #if __GNUC__ 667 #if __GNUC__
530 typedef signed long long int64_t; 668 typedef signed long long int64_t;
531 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
535 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
536 #ifdef _WIN64 676 #ifdef _WIN64
537 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t; 678 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t; 679 typedef int64_t intptr_t;
540 #else 680 #else
… …
542 typedef uint32_t uintptr_t; 682 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t; 683 typedef int32_t intptr_t;
544 #endif 684 #endif
545#else 685#else
546 #include <inttypes.h> 686 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
548 #define ECB_PTRSIZE 8 688 #define ECB_PTRSIZE 8
549 #else 689 #else
550 #define ECB_PTRSIZE 4 690 #define ECB_PTRSIZE 4
551 #endif 691 #endif
552#endif 692#endif
553 693
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
554/* work around x32 idiocy by defining proper macros */ 705/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64 706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
556 #if __ILP32 707 #if _ILP32
557 #define ECB_AMD64_X32 1 708 #define ECB_AMD64_X32 1
558 #else 709 #else
559 #define ECB_AMD64 1 710 #define ECB_AMD64 1
560 #endif 711 #endif
561#endif 712#endif
… …
565 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so. 717 * or so.
567 * 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
568 * 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.
569 */ 720 */
570#ifndef ECB_GCC_VERSION
571 #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__
572 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
573 #else 723#else
574 #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)))
575 #endif 725#endif
576#endif
577 726
578#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)))
579#define ECB_C99 (__STDC_VERSION__ >= 199901L) 728
580#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
581#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
582#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)
583 757
584#if ECB_CPP 758#if ECB_CPP
585 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
602 776
603#if ECB_NO_SMP 777#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
605#endif 779#endif
606 780
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
607#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
608 #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")
609 #if __i386 || __i386__ 793 #if __i386 || __i386__
610 #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")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #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 */
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
621 #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")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__ 817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
626 #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")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__ 825 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */ 826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ 827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__ 829 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__ 831 #elif defined __hppa__
… …
651 845
652#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #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)
656 853
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 854 #elif ECB_CLANG_EXTENSION(c_atomic)
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model. 855 /* see comment below (stdatomic.h) about the C11 memory model. */
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */ 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)
665 860
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #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()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #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 */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32 874 #elif defined _WIN32
674 #include <WinNT.h> 875 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h> 878 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
680 #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 ()
681 #elif __xlC__ 883 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
683 #endif 885 #endif
684#endif 886#endif
685 887
686#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* 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, */
689 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h> 892 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #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)
698 #endif 896 #endif
699#endif 897#endif
700 898
701#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
722 920
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif 923#endif
726 924
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
727/*****************************************************************************/ 929/*****************************************************************************/
728 930
729#if __cplusplus 931#if ECB_CPP
730 #define ecb_inline static inline 932 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
733#elif ECB_C99 935#elif ECB_C99
734 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
748 950
749#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
752#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))
753 956
754#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
755 958
756#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
757 #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)
758 #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)
759 #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)
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else 983#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
766#endif 985#endif
767 986
768/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
769#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; };
770 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
771#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
772 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
773#endif 994#endif
774 995
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
775#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
776#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
779 1019
780#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 */
781 #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)
782#else 1028#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif 1030#endif
785 1031
786#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
… …
801/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
804 1050
805/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
806#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))
807 /* 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 */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */ 1062 /* no popcountll */
814#else 1063#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
816 ecb_function_ int 1065 ecb_function_ ecb_const int
817 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
818 { 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
819 int r = 0; 1073 int r = 0;
820 1074
821 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
822 1076
823#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
833 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
835#endif 1089#endif
836 1090
837 return r; 1091 return r;
1092#endif
838 } 1093 }
839 1094
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
841 ecb_function_ int 1096 ecb_function_ ecb_const int
842 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
843 { 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
844 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
846 } 1107 }
847 1108
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
849 ecb_function_ int 1110 ecb_function_ ecb_const int
850 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
851 { 1112 {
852 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101; 1116 x *= 0x01010101;
856 1117
857 return x >> 24; 1118 return x >> 24;
858 } 1119 }
859 1120
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
861 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
862 { 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
863 int r = 0; 1129 int r = 0;
864 1130
865 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
870 1136
871 return r; 1137 return r;
1138#endif
872 } 1139 }
873 1140
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
875 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
876 { 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
877 int r = 0; 1149 int r = 0;
878 1150
879 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
880 1152
881 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
882 } 1155 }
883#endif 1156#endif
884 1157
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
886ecb_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)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
888ecb_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)); }
889 1162
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
892{ 1165{
893 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895} 1168}
896 1169
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
899{ 1172{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
904 1177
905 return x; 1178 return x;
906} 1179}
907 1180
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
910{ 1183{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
917 return x; 1190 return x;
918} 1191}
919 1192
920/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */ 1194/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
923ecb_function_ int 1196ecb_function_ ecb_const int
924ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
925{ 1198{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927} 1200}
928 1201
929ecb_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);
930ecb_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);
931ecb_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);
932ecb_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);
933ecb_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);
934ecb_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);
935ecb_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);
936ecb_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);
937 1210
938ecb_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); }
939ecb_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); }
940ecb_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); }
941ecb_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); }
942ecb_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); }
943ecb_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); }
944ecb_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); }
945ecb_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); }
946 1219
947#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
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
949 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #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)))
951#else 1271#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
953 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
954 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
955 { 1275 {
956 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
957 } 1277 }
958 1278
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
960 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
961 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
962 { 1282 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 } 1284 }
965 1285
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
967 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
968 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
969 { 1289 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 } 1291 }
972#endif 1292#endif
973 1293
974#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
975 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
976#else 1296#else
977 /* 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 :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
979 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
980#endif 1300#endif
981 1301
982/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984 1304
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
986ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
987ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
988{ 1308{
989 /* the union code still generates code under pressure in gcc, */ 1309 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */ 1310 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */ 1311 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */ 1312 /* the reason why we have this horrible preprocessor mess */
993 /* 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 */
994 /* or when using a recent enough gcc version (>= 4.6) */ 1314 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#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
998 return 0x44; 1318 return 0x44332211;
999#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
1000 return 0x11; 1322 return 0x11223344;
1001#else 1323#else
1002 union 1324 union
1003 { 1325 {
1326 uint8_t c[4];
1004 uint32_t i; 1327 uint32_t u;
1005 uint8_t c;
1006 } u = { 0x11223344 }; 1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1007 return u.c; 1329 return u.u;
1008#endif 1330#endif
1009} 1331}
1010 1332
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1012ecb_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; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1014ecb_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/*****************************************************************************/
1015 1409
1016#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #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))
1018#else 1412#else
1019 #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)))
1020#endif 1414#endif
1021 1415
1022#if __cplusplus 1416#if ECB_CPP
1023 template<typename T> 1417 template<typename T>
1024 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
1025 { 1419 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 } 1421 }
… …
1044 } 1438 }
1045#else 1439#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif 1441#endif
1048 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
1049/*******************************************************************************/ 1541/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051 1543
1052/* basically, everything uses "ieee pure-endian" floating point numbers */ 1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \ 1546#if 0 \
1055 || __i386 || __i386__ \ 1547 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1548 || ECB_GCC_AMD64 \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \ 1550 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \ 1551 || defined __mips__ \
1061 || defined __alpha__ \ 1552 || defined __alpha__ \
1062 || defined __hppa__ \ 1553 || defined __hppa__ \
1063 || defined __ia64__ \ 1554 || defined __ia64__ \
1064 || defined __m68k__ \ 1555 || defined __m68k__ \
1065 || defined __m88k__ \ 1556 || defined __m88k__ \
1066 || defined __sh__ \ 1557 || defined __sh__ \
1067 || 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__
1068 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else 1562#else
1071 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1072 #include <math.h> /* for frexp*, ldexp* */
1073#endif 1564#endif
1074 1565
1075#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
1076 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
1077 /* convert a float to ieee single/binary32 */ 1591 /* convert a float to ieee single/binary32 */
1078 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);
1079 ecb_function_ uint32_t 1593 ecb_function_ ecb_const uint32_t
1080 ecb_float_to_binary32 (float x) 1594 ecb_float_to_binary32 (float x)
1081 { 1595 {
1082 uint32_t r; 1596 uint32_t r;
1083 1597
1084 #if ECB_STDFP 1598 #if ECB_STDFP
… …
1091 if (x == 0e0f ) return 0x00000000U; 1605 if (x == 0e0f ) return 0x00000000U;
1092 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1093 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1094 if (x != x ) return 0x7fbfffffU; 1608 if (x != x ) return 0x7fbfffffU;
1095 1609
1096 m = frexpf (x, &e) * 0x1000000U; 1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1097 1611
1098 r = m & 0x80000000U; 1612 r = m & 0x80000000U;
1099 1613
1100 if (r) 1614 if (r)
1101 m = -m; 1615 m = -m;
… …
1113 1627
1114 return r; 1628 return r;
1115 } 1629 }
1116 1630
1117 /* converts an ieee single/binary32 to a float */ 1631 /* converts an ieee single/binary32 to a float */
1118 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);
1119 ecb_function_ float 1633 ecb_function_ ecb_const float
1120 ecb_binary32_to_float (uint32_t x) 1634 ecb_binary32_to_float (uint32_t x)
1121 { 1635 {
1122 float r; 1636 float r;
1123 1637
1124 #if ECB_STDFP 1638 #if ECB_STDFP
… …
1134 x |= 0x800000U; 1648 x |= 0x800000U;
1135 else 1649 else
1136 e = 1; 1650 e = 1;
1137 1651
1138 /* 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 */
1139 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1140 1654
1141 r = neg ? -r : r; 1655 r = neg ? -r : r;
1142 #endif 1656 #endif
1143 1657
1144 return r; 1658 return r;
1145 } 1659 }
1146 1660
1147 /* convert a double to ieee double/binary64 */ 1661 /* convert a double to ieee double/binary64 */
1148 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);
1149 ecb_function_ uint64_t 1663 ecb_function_ ecb_const uint64_t
1150 ecb_double_to_binary64 (double x) 1664 ecb_double_to_binary64 (double x)
1151 { 1665 {
1152 uint64_t r; 1666 uint64_t r;
1153 1667
1154 #if ECB_STDFP 1668 #if ECB_STDFP
… …
1183 1697
1184 return r; 1698 return r;
1185 } 1699 }
1186 1700
1187 /* converts an ieee double/binary64 to a double */ 1701 /* converts an ieee double/binary64 to a double */
1188 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);
1189 ecb_function_ double 1703 ecb_function_ ecb_const double
1190 ecb_binary64_to_double (uint64_t x) 1704 ecb_binary64_to_double (uint64_t x)
1191 { 1705 {
1192 double r; 1706 double r;
1193 1707
1194 #if ECB_STDFP 1708 #if ECB_STDFP
… …
1212 #endif 1726 #endif
1213 1727
1214 return r; 1728 return r;
1215 } 1729 }
1216 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
1217#endif 1747#endif
1218 1748
1219#endif 1749#endif
1220 1750
1221/* ECB.H END */ 1751/* ECB.H END */
1222 1752
1223#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1224/* 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
1225 * 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
1226 * 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
1227 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1228 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1229 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1230 */ 1760 */
1231# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1235# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1236# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1237# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1238#endif 1768#endif
1239 1769
1240#define expect_false(cond) ecb_expect_false (cond)
1241#define expect_true(cond) ecb_expect_true (cond)
1242#define noinline ecb_noinline
1243
1244#define inline_size ecb_inline 1770#define inline_size ecb_inline
1245 1771
1246#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1247# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1248#else 1774#else
1249# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1250#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/*****************************************************************************/
1251 1843
1252#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1253 1845
1254#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1255# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1256#else 1848#else
1257# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1258#endif 1850#endif
1259 1851
1260#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1261#define EMPTY2(a,b) /* used to suppress some warnings */
1262 1853
1263typedef ev_watcher *W; 1854typedef ev_watcher *W;
1264typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1265typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1266 1857
… …
1291# include "ev_win32.c" 1882# include "ev_win32.c"
1292#endif 1883#endif
1293 1884
1294/*****************************************************************************/ 1885/*****************************************************************************/
1295 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1296/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1297 1892
1298#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1299# include <math.h> 1894# include <math.h>
1300# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1301#else 1896#else
1302 1897
1303#include <float.h> 1898#include <float.h>
1304 1899
1305/* 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
1306static ev_tstamp noinline 1902static ev_tstamp
1307ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1308{ 1904{
1309 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1310#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1311 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1312#else 1908#else
1313 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1314#endif 1910#endif
1315 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
1316 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1317 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1318 { 1922 {
1319 ev_tstamp f; 1923 ev_tstamp f;
1320 1924
1321 if (v == v - 1.) 1925 if (v == v - 1.)
1322 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1323 1927
1324 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1325 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1326 } 1930 }
1327 1931
1328 /* special treatment for negative args? */
1329 if (expect_false (v < 0.))
1330 {
1331 ev_tstamp f = -ev_floor (-v);
1332
1333 return f - (f == v ? 0 : 1);
1334 }
1335
1336 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1337 return (unsigned long)v; 1933 return (unsigned long)v;
1338} 1934}
1339 1935
1340#endif 1936#endif
… …
1343 1939
1344#ifdef __linux 1940#ifdef __linux
1345# include <sys/utsname.h> 1941# include <sys/utsname.h>
1346#endif 1942#endif
1347 1943
1348static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1349ev_linux_version (void) 1946ev_linux_version (void)
1350{ 1947{
1351#ifdef __linux 1948#ifdef __linux
1352 unsigned int v = 0; 1949 unsigned int v = 0;
1353 struct utsname buf; 1950 struct utsname buf;
… …
1382} 1979}
1383 1980
1384/*****************************************************************************/ 1981/*****************************************************************************/
1385 1982
1386#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1387static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1388ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1389{ 1987{
1390 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1391} 1989}
1392#endif 1990#endif
1393 1991
1394static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1395 1993
1396void ecb_cold 1994ecb_cold
1995void
1397ev_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
1398{ 1997{
1399 syserr_cb = cb; 1998 syserr_cb = cb;
1400} 1999}
1401 2000
1402static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1403ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1404{ 2004{
1405 if (!msg) 2005 if (!msg)
1406 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1407 2007
… …
1420 abort (); 2020 abort ();
1421 } 2021 }
1422} 2022}
1423 2023
1424static void * 2024static void *
1425ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1426{ 2026{
1427 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1428 * 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
1429 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1430 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1436 2036
1437 free (ptr); 2037 free (ptr);
1438 return 0; 2038 return 0;
1439} 2039}
1440 2040
1441static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1442 2042
1443void ecb_cold 2043ecb_cold
2044void
1444ev_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
1445{ 2046{
1446 alloc = cb; 2047 alloc = cb;
1447} 2048}
1448 2049
1449inline_speed void * 2050inline_speed void *
… …
1476typedef struct 2077typedef struct
1477{ 2078{
1478 WL head; 2079 WL head;
1479 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1480 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) */
1481 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 */
1482 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1483#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1484 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1485#endif 2086#endif
1486#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1487 SOCKET handle; 2088 SOCKET handle;
… …
1541 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1542 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 */
1543 2144
1544#else 2145#else
1545 2146
1546 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 */
1547 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1548 #include "ev_vars.h" 2149 #include "ev_vars.h"
1549 #undef VAR 2150 #undef VAR
1550 2151
1551 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1552 2153
1553#endif 2154#endif
1554 2155
1555#if EV_FEATURE_API 2156#if EV_FEATURE_API
1556# 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)
1557# 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)
1558# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1559#else 2160#else
1560# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1561# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1562# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1566 2167
1567/*****************************************************************************/ 2168/*****************************************************************************/
1568 2169
1569#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1570ev_tstamp 2171ev_tstamp
1571ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1572{ 2173{
1573#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1574 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1575 { 2176 {
1576 struct timespec ts; 2177 struct timespec ts;
1577 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1578 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1579 } 2180 }
1580#endif 2181#endif
1581 2182
2183 {
1582 struct timeval tv; 2184 struct timeval tv;
1583 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1584 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1585} 2188}
1586#endif 2189#endif
1587 2190
1588inline_size ev_tstamp 2191inline_size ev_tstamp
1589get_clock (void) 2192get_clock (void)
1590{ 2193{
1591#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1592 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1593 { 2196 {
1594 struct timespec ts; 2197 struct timespec ts;
1595 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1596 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1597 } 2200 }
1598#endif 2201#endif
1599 2202
1600 return ev_time (); 2203 return ev_time ();
1601} 2204}
1602 2205
1603#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1604ev_tstamp 2207ev_tstamp
1605ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1606{ 2209{
1607 return ev_rt_now; 2210 return ev_rt_now;
1608} 2211}
1609#endif 2212#endif
1610 2213
1611void 2214void
1612ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1613{ 2216{
1614 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1615 { 2218 {
1616#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1617 struct timespec ts; 2220 struct timespec ts;
1618 2221
1619 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1620 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1621#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) */
1622 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1623#else 2228#else
1624 struct timeval tv; 2229 struct timeval tv;
1625 2230
1626 /* 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 */
1627 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1657 } 2262 }
1658 2263
1659 return ncur; 2264 return ncur;
1660} 2265}
1661 2266
1662static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1663array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1664{ 2270{
1665 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1666 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1667} 2273}
1668 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1669#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1670 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1671 2279
1672#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1673 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1674 { \ 2282 { \
1675 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1676 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1677 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1678 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1679 } 2287 }
1680 2288
1681#if 0 2289#if 0
1682#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1683 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1692 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
1693 2301
1694/*****************************************************************************/ 2302/*****************************************************************************/
1695 2303
1696/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1697static void noinline 2305ecb_noinline
2306static void
1698pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1699{ 2308{
1700} 2309}
1701 2310
1702void noinline 2311ecb_noinline
2312void
1703ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1704{ 2314{
1705 W w_ = (W)w; 2315 W w_ = (W)w;
1706 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1707 2317
1708 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1709 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1710 else 2320 else
1711 { 2321 {
1712 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1713 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1714 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1715 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1716 } 2326 }
1717 2327
1718 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
1719} 2329}
1720 2330
1721inline_speed void 2331inline_speed void
1722feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1723{ 2333{
1724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1725 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1726} 2336}
1727 2337
1728inline_size void 2338inline_size void
1729feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1764inline_speed void 2374inline_speed void
1765fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1766{ 2376{
1767 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1768 2378
1769 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1770 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1771} 2381}
1772 2382
1773void 2383void
1774ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1775{ 2385{
1776 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1777 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1778} 2388}
1779 2389
… …
1782inline_size void 2392inline_size void
1783fd_reify (EV_P) 2393fd_reify (EV_P)
1784{ 2394{
1785 int i; 2395 int i;
1786 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
1787#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1788 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1789 { 2411 {
1790 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1791 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1792 2414
1793 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1807 } 2429 }
1808 } 2430 }
1809 } 2431 }
1810#endif 2432#endif
1811 2433
1812 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1813 { 2435 {
1814 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1815 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1816 ev_io *w; 2438 ev_io *w;
1817 2439
1818 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1819 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1820 2442
1821 anfd->reify = 0; 2443 anfd->reify = 0;
1822 2444
1823 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1824 { 2446 {
1825 anfd->events = 0; 2447 anfd->events = 0;
1826 2448
1827 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)
1828 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1833 2455
1834 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1835 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1836 } 2458 }
1837 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
1838 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1839} 2468}
1840 2469
1841/* something about the given fd changed */ 2470/* something about the given fd changed */
1842inline_size void 2471inline_size
2472void
1843fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1844{ 2474{
1845 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1846 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
1847 2477
1848 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1849 { 2479 {
1850 ++fdchangecnt; 2480 ++fdchangecnt;
1851 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1852 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1853 } 2483 }
1854} 2484}
1855 2485
1856/* 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 */
1857inline_speed void ecb_cold 2487inline_speed ecb_cold void
1858fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1859{ 2489{
1860 ev_io *w; 2490 ev_io *w;
1861 2491
1862 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1865 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);
1866 } 2496 }
1867} 2497}
1868 2498
1869/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1870inline_size int ecb_cold 2500inline_size ecb_cold int
1871fd_valid (int fd) 2501fd_valid (int fd)
1872{ 2502{
1873#ifdef _WIN32 2503#ifdef _WIN32
1874 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1875#else 2505#else
1876 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1877#endif 2507#endif
1878} 2508}
1879 2509
1880/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1881static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1882fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1883{ 2514{
1884 int fd; 2515 int fd;
1885 2516
1886 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1888 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1889 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1890} 2521}
1891 2522
1892/* 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 */
1893static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1894fd_enomem (EV_P) 2526fd_enomem (EV_P)
1895{ 2527{
1896 int fd; 2528 int fd;
1897 2529
1898 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1902 break; 2534 break;
1903 } 2535 }
1904} 2536}
1905 2537
1906/* 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 */
1907static void noinline 2539ecb_noinline
2540static void
1908fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1909{ 2542{
1910 int fd; 2543 int fd;
1911 2544
1912 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1965 ev_tstamp minat; 2598 ev_tstamp minat;
1966 ANHE *minpos; 2599 ANHE *minpos;
1967 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1968 2601
1969 /* find minimum child */ 2602 /* find minimum child */
1970 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1971 { 2604 {
1972 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1973 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));
1974 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));
1975 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));
1976 } 2609 }
1977 else if (pos < E) 2610 else if (pos < E)
1978 { 2611 {
1979 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1980 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));
1981 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));
1982 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));
1983 } 2616 }
1984 else 2617 else
1985 break; 2618 break;
1986 2619
1987 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1995 2628
1996 heap [k] = he; 2629 heap [k] = he;
1997 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1998} 2631}
1999 2632
2000#else /* 4HEAP */ 2633#else /* not 4HEAP */
2001 2634
2002#define HEAP0 1 2635#define HEAP0 1
2003#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
2004#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
2005 2638
… …
2077 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2078} 2711}
2079 2712
2080/*****************************************************************************/ 2713/*****************************************************************************/
2081 2714
2082/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2083typedef struct 2716typedef struct
2084{ 2717{
2085 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2086#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2087 EV_P; 2720 EV_P;
… …
2093 2726
2094/*****************************************************************************/ 2727/*****************************************************************************/
2095 2728
2096#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2097 2730
2098static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2099evpipe_init (EV_P) 2733evpipe_init (EV_P)
2100{ 2734{
2101 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2102 { 2736 {
2103 int fds [2]; 2737 int fds [2];
… …
2143inline_speed void 2777inline_speed void
2144evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2145{ 2779{
2146 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 */
2147 2781
2148 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2149 return; 2783 return;
2150 2784
2151 *flag = 1; 2785 *flag = 1;
2152 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 */
2153 2787
… …
2174#endif 2808#endif
2175 { 2809 {
2176#ifdef _WIN32 2810#ifdef _WIN32
2177 WSABUF buf; 2811 WSABUF buf;
2178 DWORD sent; 2812 DWORD sent;
2179 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2180 buf.len = 1; 2814 buf.len = 1;
2181 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);
2182#else 2816#else
2183 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2184#endif 2818#endif
… …
2230 sig_pending = 0; 2864 sig_pending = 0;
2231 2865
2232 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2233 2867
2234 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2235 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2236 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2237 } 2871 }
2238#endif 2872#endif
2239 2873
2240#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2256} 2890}
2257 2891
2258/*****************************************************************************/ 2892/*****************************************************************************/
2259 2893
2260void 2894void
2261ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2262{ 2896{
2263#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2264 EV_P; 2898 EV_P;
2265 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2266 EV_A = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
… …
2281#endif 2915#endif
2282 2916
2283 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2284} 2918}
2285 2919
2286void noinline 2920ecb_noinline
2921void
2287ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2288{ 2923{
2289 WL w; 2924 WL w;
2290 2925
2291 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2292 return; 2927 return;
2293 2928
2294 --signum; 2929 --signum;
2295 2930
2296#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2297 /* 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 */
2298 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2299 2934
2300 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2301 return; 2936 return;
2302#endif 2937#endif
2303 2938
2304 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2305 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2389 3024
2390#endif 3025#endif
2391 3026
2392/*****************************************************************************/ 3027/*****************************************************************************/
2393 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#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
2394#if EV_USE_IOCP 3080#if EV_USE_IOCP
2395# include "ev_iocp.c" 3081# include "ev_iocp.c"
2396#endif 3082#endif
2397#if EV_USE_PORT 3083#if EV_USE_PORT
2398# include "ev_port.c" 3084# include "ev_port.c"
… …
2401# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2402#endif 3088#endif
2403#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2404# include "ev_epoll.c" 3090# include "ev_epoll.c"
2405#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
2406#if EV_USE_POLL 3098#if EV_USE_POLL
2407# include "ev_poll.c" 3099# include "ev_poll.c"
2408#endif 3100#endif
2409#if EV_USE_SELECT 3101#if EV_USE_SELECT
2410# include "ev_select.c" 3102# include "ev_select.c"
2411#endif 3103#endif
2412 3104
2413int ecb_cold 3105ecb_cold int
2414ev_version_major (void) EV_THROW 3106ev_version_major (void) EV_NOEXCEPT
2415{ 3107{
2416 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2417} 3109}
2418 3110
2419int ecb_cold 3111ecb_cold int
2420ev_version_minor (void) EV_THROW 3112ev_version_minor (void) EV_NOEXCEPT
2421{ 3113{
2422 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2423} 3115}
2424 3116
2425/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
2426int inline_size ecb_cold 3118inline_size ecb_cold int
2427enable_secure (void) 3119enable_secure (void)
2428{ 3120{
2429#ifdef _WIN32 3121#ifdef _WIN32
2430 return 0; 3122 return 0;
2431#else 3123#else
2432 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2433 || getgid () != getegid (); 3125 || getgid () != getegid ();
2434#endif 3126#endif
2435} 3127}
2436 3128
2437unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2438ev_supported_backends (void) EV_THROW 3131ev_supported_backends (void) EV_NOEXCEPT
2439{ 3132{
2440 unsigned int flags = 0; 3133 unsigned int flags = 0;
2441 3134
2442 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2443 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2444 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2445 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2446 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2447 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2448 return flags; 3143 return flags;
2449} 3144}
2450 3145
2451unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2452ev_recommended_backends (void) EV_THROW 3148ev_recommended_backends (void) EV_NOEXCEPT
2453{ 3149{
2454 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2455 3151
2456#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2457 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2465#endif 3161#endif
2466#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2467 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2468#endif 3164#endif
2469 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: iouring is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
2470 return flags; 3175 return flags;
2471} 3176}
2472 3177
2473unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2474ev_embeddable_backends (void) EV_THROW 3180ev_embeddable_backends (void) EV_NOEXCEPT
2475{ 3181{
2476 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2477 3183
2478 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2479 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2480 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2481 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2482 return flags; 3190 return flags;
2483} 3191}
2484 3192
2485unsigned int 3193unsigned int
2486ev_backend (EV_P) EV_THROW 3194ev_backend (EV_P) EV_NOEXCEPT
2487{ 3195{
2488 return backend; 3196 return backend;
2489} 3197}
2490 3198
2491#if EV_FEATURE_API 3199#if EV_FEATURE_API
2492unsigned int 3200unsigned int
2493ev_iteration (EV_P) EV_THROW 3201ev_iteration (EV_P) EV_NOEXCEPT
2494{ 3202{
2495 return loop_count; 3203 return loop_count;
2496} 3204}
2497 3205
2498unsigned int 3206unsigned int
2499ev_depth (EV_P) EV_THROW 3207ev_depth (EV_P) EV_NOEXCEPT
2500{ 3208{
2501 return loop_depth; 3209 return loop_depth;
2502} 3210}
2503 3211
2504void 3212void
2505ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2506{ 3214{
2507 io_blocktime = interval; 3215 io_blocktime = interval;
2508} 3216}
2509 3217
2510void 3218void
2511ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2512{ 3220{
2513 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2514} 3222}
2515 3223
2516void 3224void
2517ev_set_userdata (EV_P_ void *data) EV_THROW 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2518{ 3226{
2519 userdata = data; 3227 userdata = data;
2520} 3228}
2521 3229
2522void * 3230void *
2523ev_userdata (EV_P) EV_THROW 3231ev_userdata (EV_P) EV_NOEXCEPT
2524{ 3232{
2525 return userdata; 3233 return userdata;
2526} 3234}
2527 3235
2528void 3236void
2529ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2530{ 3238{
2531 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2532} 3240}
2533 3241
2534void 3242void
2535ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2536{ 3244{
2537 release_cb = release; 3245 release_cb = release;
2538 acquire_cb = acquire; 3246 acquire_cb = acquire;
2539} 3247}
2540#endif 3248#endif
2541 3249
2542/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2543static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2544loop_init (EV_P_ unsigned int flags) EV_THROW 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2545{ 3254{
2546 if (!backend) 3255 if (!backend)
2547 { 3256 {
2548 origflags = flags; 3257 origflags = flags;
2549 3258
… …
2602 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2603#endif 3312#endif
2604#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2605 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2606#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2607 3319
2608 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2609 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2610 3322
2611#if EV_USE_IOCP 3323#if EV_USE_IOCP
2612 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2613#endif 3325#endif
2614#if EV_USE_PORT 3326#if EV_USE_PORT
2615 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2616#endif 3328#endif
2617#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2618 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2619#endif 3337#endif
2620#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2621 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2622#endif 3340#endif
2623#if EV_USE_POLL 3341#if EV_USE_POLL
2624 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2625#endif 3343#endif
2626#if EV_USE_SELECT 3344#if EV_USE_SELECT
2627 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2628#endif 3346#endif
2629 3347
2630 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2631 3349
2632#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2635#endif 3353#endif
2636 } 3354 }
2637} 3355}
2638 3356
2639/* free up a loop structure */ 3357/* free up a loop structure */
2640void ecb_cold 3358ecb_cold
3359void
2641ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2642{ 3361{
2643 int i; 3362 int i;
2644 3363
2645#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2648 return; 3367 return;
2649#endif 3368#endif
2650 3369
2651#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2652 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2653 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2654 { 3373 {
2655 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2656 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2657 } 3376 }
2658#endif 3377#endif
… …
2677#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2678 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2679 close (sigfd); 3398 close (sigfd);
2680#endif 3399#endif
2681 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2682#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2683 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2684 close (fs_fd); 3408 close (fs_fd);
2685#endif 3409#endif
2686 3410
2687 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2688 close (backend_fd); 3412 close (backend_fd);
2689 3413
2690#if EV_USE_IOCP 3414#if EV_USE_IOCP
2691 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2692#endif 3416#endif
2693#if EV_USE_PORT 3417#if EV_USE_PORT
2694 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2695#endif 3419#endif
2696#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2697 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2698#endif 3428#endif
2699#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2700 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2701#endif 3431#endif
2702#if EV_USE_POLL 3432#if EV_USE_POLL
2703 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2704#endif 3434#endif
2705#if EV_USE_SELECT 3435#if EV_USE_SELECT
2706 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2707#endif 3437#endif
2708 3438
2709 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2710 { 3440 {
2711 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
2753 3483
2754inline_size void 3484inline_size void
2755loop_fork (EV_P) 3485loop_fork (EV_P)
2756{ 3486{
2757#if EV_USE_PORT 3487#if EV_USE_PORT
2758 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2759#endif 3489#endif
2760#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
2761 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2762#endif 3498#endif
2763#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
2764 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2765#endif 3501#endif
2766#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2767 infy_fork (EV_A); 3503 infy_fork (EV_A);
2768#endif 3504#endif
2769 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
2770#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2771 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
2772 { 3529 {
2773 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2774 3531
2775 ev_ref (EV_A); 3532 ev_ref (EV_A);
2776 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
2777 3534
2778 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
2779 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
2780 3537
2781 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
2782 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
2783 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
2784 } 3543 }
2785#endif
2786 3544
2787 postfork = 0; 3545 postfork = 0;
2788} 3546}
2789 3547
2790#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2791 3549
3550ecb_cold
2792struct ev_loop * ecb_cold 3551struct ev_loop *
2793ev_loop_new (unsigned int flags) EV_THROW 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
2794{ 3553{
2795 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2796 3555
2797 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
2798 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
2805} 3564}
2806 3565
2807#endif /* multiplicity */ 3566#endif /* multiplicity */
2808 3567
2809#if EV_VERIFY 3568#if EV_VERIFY
2810static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
2811verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
2812{ 3572{
2813 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2814 3574
2815 if (w->pending) 3575 if (w->pending)
2816 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2817} 3577}
2818 3578
2819static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
2820verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
2821{ 3582{
2822 int i; 3583 int i;
2823 3584
2824 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2829 3590
2830 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2831 } 3592 }
2832} 3593}
2833 3594
2834static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
2835array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
2836{ 3598{
2837 while (cnt--) 3599 while (cnt--)
2838 { 3600 {
2839 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2842} 3604}
2843#endif 3605#endif
2844 3606
2845#if EV_FEATURE_API 3607#if EV_FEATURE_API
2846void ecb_cold 3608void ecb_cold
2847ev_verify (EV_P) EV_THROW 3609ev_verify (EV_P) EV_NOEXCEPT
2848{ 3610{
2849#if EV_VERIFY 3611#if EV_VERIFY
2850 int i; 3612 int i;
2851 WL w, w2; 3613 WL w, w2;
2852 3614
… …
2928#endif 3690#endif
2929} 3691}
2930#endif 3692#endif
2931 3693
2932#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
2933struct ev_loop * ecb_cold 3696struct ev_loop *
2934#else 3697#else
2935int 3698int
2936#endif 3699#endif
2937ev_default_loop (unsigned int flags) EV_THROW 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
2938{ 3701{
2939 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
2940 { 3703 {
2941#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
2942 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2961 3724
2962 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2963} 3726}
2964 3727
2965void 3728void
2966ev_loop_fork (EV_P) EV_THROW 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2967{ 3730{
2968 postfork = 1; 3731 postfork = 1;
2969} 3732}
2970 3733
2971/*****************************************************************************/ 3734/*****************************************************************************/
… …
2975{ 3738{
2976 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2977} 3740}
2978 3741
2979unsigned int 3742unsigned int
2980ev_pending_count (EV_P) EV_THROW 3743ev_pending_count (EV_P) EV_NOEXCEPT
2981{ 3744{
2982 int pri; 3745 int pri;
2983 unsigned int count = 0; 3746 unsigned int count = 0;
2984 3747
2985 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2986 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2987 3750
2988 return count; 3751 return count;
2989} 3752}
2990 3753
2991void noinline 3754ecb_noinline
3755void
2992ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2993{ 3757{
2994 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
2995 3759
2996 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3760 do
2997 { 3761 {
2998 --pendingpri; 3762 --pendingpri;
2999 3763
3764 /* pendingpri possibly gets modified in the inner loop */
3000 while (pendingcnt [pendingpri]) 3765 while (pendingcnt [pendingpri])
3001 { 3766 {
3002 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3003 3768
3004 p->w->pending = 0; 3769 p->w->pending = 0;
3005 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
3006 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
3007 } 3772 }
3008 } 3773 }
3774 while (pendingpri);
3009} 3775}
3010 3776
3011#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
3012/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
3013/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
3014inline_size void 3780inline_size void
3015idle_reify (EV_P) 3781idle_reify (EV_P)
3016{ 3782{
3017 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
3018 { 3784 {
3019 int pri; 3785 int pri;
3020 3786
3021 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3022 { 3788 {
… …
3052 { 3818 {
3053 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3054 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3055 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3056 3822
3057 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3058 3824
3059 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3060 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3061 } 3827 }
3062 else 3828 else
… …
3071 } 3837 }
3072} 3838}
3073 3839
3074#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3075 3841
3076static void noinline 3842ecb_noinline
3843static void
3077periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3078{ 3845{
3079 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3080 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3081 3848
… …
3083 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3084 { 3851 {
3085 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3086 3853
3087 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3088 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3089 { 3856 {
3090 at = ev_rt_now; 3857 at = ev_rt_now;
3091 break; 3858 break;
3092 } 3859 }
3093 3860
… …
3139 } 3906 }
3140} 3907}
3141 3908
3142/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3143/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
3144static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
3145periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3146{ 3914{
3147 int i; 3915 int i;
3148 3916
3149 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
3162 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3163} 3931}
3164#endif 3932#endif
3165 3933
3166/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3167static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
3168timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3169{ 3938{
3170 int i; 3939 int i;
3171 3940
3172 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
3181/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3182inline_speed void 3951inline_speed void
3183time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3184{ 3953{
3185#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3186 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3187 { 3956 {
3188 int i; 3957 int i;
3189 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3190 3959
3191 mn_now = get_clock (); 3960 mn_now = get_clock ();
3192 3961
3193 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3194 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3195 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3196 { 3965 {
3197 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3198 return; 3967 return;
3199 } 3968 }
3200 3969
… …
3214 ev_tstamp diff; 3983 ev_tstamp diff;
3215 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3216 3985
3217 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3218 3987
3219 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3220 return; /* all is well */ 3989 return; /* all is well */
3221 3990
3222 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3223 mn_now = get_clock (); 3992 mn_now = get_clock ();
3224 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3233 else 4002 else
3234#endif 4003#endif
3235 { 4004 {
3236 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3237 4006
3238 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3239 { 4008 {
3240 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
3241 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3242#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3243 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3266#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3267 ev_verify (EV_A); 4036 ev_verify (EV_A);
3268#endif 4037#endif
3269 4038
3270#ifndef _WIN32 4039#ifndef _WIN32
3271 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3272 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3273 { 4042 {
3274 curpid = getpid (); 4043 curpid = getpid ();
3275 postfork = 1; 4044 postfork = 1;
3276 } 4045 }
3277#endif 4046#endif
3278 4047
3279#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3280 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3281 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3282 if (forkcnt) 4051 if (forkcnt)
3283 { 4052 {
3284 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3285 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3286 } 4055 }
3287#endif 4056#endif
3288 4057
3289#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3290 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3291 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3292 { 4061 {
3293 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3294 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3295 } 4064 }
3296#endif 4065#endif
3297 4066
3298 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3299 break; 4068 break;
3300 4069
3301 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3302 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3303 loop_fork (EV_A); 4072 loop_fork (EV_A);
3304 4073
3305 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3306 fd_reify (EV_A); 4075 fd_reify (EV_A);
3307 4076
… …
3312 4081
3313 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3314 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3315 4084
3316 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3317 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3318 4087
3319 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3320 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3321 4090
3322 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3323 4092
3324 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3325 { 4094 {
3326 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
3327 4108
3328 if (timercnt) 4109 if (timercnt)
3329 { 4110 {
3330 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3331 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3338 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3339 } 4120 }
3340#endif 4121#endif
3341 4122
3342 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3343 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3344 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3345 4126
3346 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3347 /* to pass a minimum nonzero value to the backend */ 4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
3348 if (expect_false (waittime < backend_mintime)) 4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
3349 waittime = backend_mintime; 4135 : backend_mintime;
3350 4136
3351 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3352 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3353 { 4139 {
3354 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3355 4141
3356 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3357 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3358 4144
3359 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3360 { 4146 {
3361 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3362 waittime -= sleeptime; 4148 waittime -= sleeptime;
3363 } 4149 }
3364 } 4150 }
… …
3378 { 4164 {
3379 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3380 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3381 } 4167 }
3382 4168
3383
3384 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3385 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3386 } 4171 }
3387 4172
3388 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3396 idle_reify (EV_A); 4181 idle_reify (EV_A);
3397#endif 4182#endif
3398 4183
3399#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3400 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3401 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3402 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3403#endif 4188#endif
3404 4189
3405 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3406 } 4191 }
3407 while (expect_true ( 4192 while (ecb_expect_true (
3408 activecnt 4193 activecnt
3409 && !loop_done 4194 && !loop_done
3410 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3411 )); 4196 ));
3412 4197
… …
3419 4204
3420 return activecnt; 4205 return activecnt;
3421} 4206}
3422 4207
3423void 4208void
3424ev_break (EV_P_ int how) EV_THROW 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3425{ 4210{
3426 loop_done = how; 4211 loop_done = how;
3427} 4212}
3428 4213
3429void 4214void
3430ev_ref (EV_P) EV_THROW 4215ev_ref (EV_P) EV_NOEXCEPT
3431{ 4216{
3432 ++activecnt; 4217 ++activecnt;
3433} 4218}
3434 4219
3435void 4220void
3436ev_unref (EV_P) EV_THROW 4221ev_unref (EV_P) EV_NOEXCEPT
3437{ 4222{
3438 --activecnt; 4223 --activecnt;
3439} 4224}
3440 4225
3441void 4226void
3442ev_now_update (EV_P) EV_THROW 4227ev_now_update (EV_P) EV_NOEXCEPT
3443{ 4228{
3444 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3445} 4230}
3446 4231
3447void 4232void
3448ev_suspend (EV_P) EV_THROW 4233ev_suspend (EV_P) EV_NOEXCEPT
3449{ 4234{
3450 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3451} 4236}
3452 4237
3453void 4238void
3454ev_resume (EV_P) EV_THROW 4239ev_resume (EV_P) EV_NOEXCEPT
3455{ 4240{
3456 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3457 4242
3458 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3459 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3476inline_size void 4261inline_size void
3477wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3478{ 4263{
3479 while (*head) 4264 while (*head)
3480 { 4265 {
3481 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3482 { 4267 {
3483 *head = elem->next; 4268 *head = elem->next;
3484 break; 4269 break;
3485 } 4270 }
3486 4271
… …
3498 w->pending = 0; 4283 w->pending = 0;
3499 } 4284 }
3500} 4285}
3501 4286
3502int 4287int
3503ev_clear_pending (EV_P_ void *w) EV_THROW 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3504{ 4289{
3505 W w_ = (W)w; 4290 W w_ = (W)w;
3506 int pending = w_->pending; 4291 int pending = w_->pending;
3507 4292
3508 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3509 { 4294 {
3510 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3511 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3512 w_->pending = 0; 4297 w_->pending = 0;
3513 return p->events; 4298 return p->events;
… …
3540 w->active = 0; 4325 w->active = 0;
3541} 4326}
3542 4327
3543/*****************************************************************************/ 4328/*****************************************************************************/
3544 4329
3545void noinline 4330ecb_noinline
4331void
3546ev_io_start (EV_P_ ev_io *w) EV_THROW 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3547{ 4333{
3548 int fd = w->fd; 4334 int fd = w->fd;
3549 4335
3550 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3551 return; 4337 return;
3552 4338
3553 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3554 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3555 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3556 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3557 4346
3558 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3559 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3560 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
3561 4350
3562 /* common bug, apparently */ 4351 /* common bug, apparently */
3563 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3564 4353
… …
3566 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3567 4356
3568 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3569} 4358}
3570 4359
3571void noinline 4360ecb_noinline
4361void
3572ev_io_stop (EV_P_ ev_io *w) EV_THROW 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3573{ 4363{
3574 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3575 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3576 return; 4366 return;
3577 4367
3578 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3579 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3580 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3581 4374
3582 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3583 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3584 4377
3585 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3586 4379
3587 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3588} 4381}
3589 4382
3590void noinline 4383ecb_noinline
4384void
3591ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3592{ 4386{
3593 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3594 return; 4388 return;
3595 4389
3596 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3597 4391
3598 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3599 4393
3600 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3601 4395
3602 ++timercnt; 4396 ++timercnt;
3603 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3604 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3605 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3606 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3607 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3608 4402
3609 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3610 4404
3611 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3612} 4406}
3613 4407
3614void noinline 4408ecb_noinline
4409void
3615ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3616{ 4411{
3617 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3618 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3619 return; 4414 return;
3620 4415
3621 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3622 4417
3623 { 4418 {
… …
3625 4420
3626 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3627 4422
3628 --timercnt; 4423 --timercnt;
3629 4424
3630 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3631 { 4426 {
3632 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3633 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3634 } 4429 }
3635 } 4430 }
… …
3639 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3640 4435
3641 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3642} 4437}
3643 4438
3644void noinline 4439ecb_noinline
4440void
3645ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3646{ 4442{
3647 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3648 4444
3649 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3650 4446
… …
3667 4463
3668 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3669} 4465}
3670 4466
3671ev_tstamp 4467ev_tstamp
3672ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3673{ 4469{
3674 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3675} 4471}
3676 4472
3677#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3678void noinline 4474ecb_noinline
4475void
3679ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3680{ 4477{
3681 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3682 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3683 4485
3684 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3685 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3686 else if (w->interval) 4488 else if (w->interval)
3687 { 4489 {
… …
3693 4495
3694 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3695 4497
3696 ++periodiccnt; 4498 ++periodiccnt;
3697 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3698 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3699 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3700 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3701 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3702 4504
3703 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3704 4506
3705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3706} 4508}
3707 4509
3708void noinline 4510ecb_noinline
4511void
3709ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3710{ 4513{
3711 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3712 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3713 return; 4516 return;
3714 4517
3715 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3716 4519
3717 { 4520 {
… …
3719 4522
3720 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3721 4524
3722 --periodiccnt; 4525 --periodiccnt;
3723 4526
3724 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
3725 { 4528 {
3726 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
3727 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
3728 } 4531 }
3729 } 4532 }
… …
3731 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3732 4535
3733 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3734} 4537}
3735 4538
3736void noinline 4539ecb_noinline
4540void
3737ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3738{ 4542{
3739 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
3740 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
3741 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
3742} 4546}
… …
3746# define SA_RESTART 0 4550# define SA_RESTART 0
3747#endif 4551#endif
3748 4552
3749#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
3750 4554
3751void noinline 4555ecb_noinline
4556void
3752ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3753{ 4558{
3754 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
3755 return; 4560 return;
3756 4561
3757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3758 4563
3759#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
… …
3828 } 4633 }
3829 4634
3830 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3831} 4636}
3832 4637
3833void noinline 4638ecb_noinline
4639void
3834ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3835{ 4641{
3836 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
3837 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
3838 return; 4644 return;
3839 4645
3840 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3841 4647
3842 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3870#endif 4676#endif
3871 4677
3872#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
3873 4679
3874void 4680void
3875ev_child_start (EV_P_ ev_child *w) EV_THROW 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3876{ 4682{
3877#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
3878 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3879#endif 4685#endif
3880 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
3881 return; 4687 return;
3882 4688
3883 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
3884 4690
3885 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
3887 4693
3888 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3889} 4695}
3890 4696
3891void 4697void
3892ev_child_stop (EV_P_ ev_child *w) EV_THROW 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3893{ 4699{
3894 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
3895 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
3896 return; 4702 return;
3897 4703
3898 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
3899 4705
3900 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3914 4720
3915#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
3916#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3917#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
3918 4724
3919static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3920 4726
3921#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
3922 4728
3923/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3924# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3925 4731
3926static void noinline 4732ecb_noinline
4733static void
3927infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
3928{ 4735{
3929 w->wd = inotify_add_watch (fs_fd, w->path, 4736 w->wd = inotify_add_watch (fs_fd, w->path,
3930 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3931 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
3995 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3996 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
3997 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3998} 4805}
3999 4806
4000static void noinline 4807ecb_noinline
4808static void
4001infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
4002{ 4810{
4003 int slot; 4811 int slot;
4004 int wd = w->wd; 4812 int wd = w->wd;
4005 4813
… …
4012 4820
4013 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
4014 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
4015} 4823}
4016 4824
4017static void noinline 4825ecb_noinline
4826static void
4018infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4019{ 4828{
4020 if (slot < 0) 4829 if (slot < 0)
4021 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
4022 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4058 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4059 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
4060 } 4869 }
4061} 4870}
4062 4871
4063inline_size void ecb_cold 4872inline_size ecb_cold
4873void
4064ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
4065{ 4875{
4066 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
4067 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4068 */ 4878 */
… …
4158#else 4968#else
4159# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
4160#endif 4970#endif
4161 4971
4162void 4972void
4163ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4164{ 4974{
4165 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
4166 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
4167 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
4168 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
4169} 4979}
4170 4980
4171static void noinline 4981ecb_noinline
4982static void
4172stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4173{ 4984{
4174 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4175 4986
4176 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
4207 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
4208 } 5019 }
4209} 5020}
4210 5021
4211void 5022void
4212ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4213{ 5024{
4214 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
4215 return; 5026 return;
4216 5027
4217 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
4218 5029
4219 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4238 5049
4239 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4240} 5051}
4241 5052
4242void 5053void
4243ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4244{ 5055{
4245 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4246 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4247 return; 5058 return;
4248 5059
4249 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4250 5061
4251#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
4264} 5075}
4265#endif 5076#endif
4266 5077
4267#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
4268void 5079void
4269ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4270{ 5081{
4271 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
4272 return; 5083 return;
4273 5084
4274 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
4275 5086
4276 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
4279 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
4280 5091
4281 ++idleall; 5092 ++idleall;
4282 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
4283 5094
4284 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4285 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
4286 } 5097 }
4287 5098
4288 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
4289} 5100}
4290 5101
4291void 5102void
4292ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4293{ 5104{
4294 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
4295 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
4296 return; 5107 return;
4297 5108
4298 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4299 5110
4300 { 5111 {
… …
4311} 5122}
4312#endif 5123#endif
4313 5124
4314#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
4315void 5126void
4316ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4317{ 5128{
4318 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
4319 return; 5130 return;
4320 5131
4321 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4322 5133
4323 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
4324 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4325 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
4326 5137
4327 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4328} 5139}
4329 5140
4330void 5141void
4331ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4332{ 5143{
4333 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4334 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4335 return; 5146 return;
4336 5147
4337 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4338 5149
4339 { 5150 {
… …
4349} 5160}
4350#endif 5161#endif
4351 5162
4352#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4353void 5164void
4354ev_check_start (EV_P_ ev_check *w) EV_THROW 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4355{ 5166{
4356 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4357 return; 5168 return;
4358 5169
4359 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4360 5171
4361 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4362 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4363 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4364 5175
4365 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4366} 5177}
4367 5178
4368void 5179void
4369ev_check_stop (EV_P_ ev_check *w) EV_THROW 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4370{ 5181{
4371 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4372 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4373 return; 5184 return;
4374 5185
4375 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4376 5187
4377 { 5188 {
… …
4386 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4387} 5198}
4388#endif 5199#endif
4389 5200
4390#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4391void noinline 5202ecb_noinline
5203void
4392ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4393{ 5205{
4394 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4395} 5207}
4396 5208
4397static void 5209static void
… …
4419 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4420 } 5232 }
4421 } 5233 }
4422} 5234}
4423 5235
5236#if EV_FORK_ENABLE
4424static void 5237static void
4425embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4426{ 5239{
4427 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4428 5241
… …
4435 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4436 } 5249 }
4437 5250
4438 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4439} 5252}
5253#endif
4440 5254
4441#if 0 5255#if 0
4442static void 5256static void
4443embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4444{ 5258{
4445 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4446} 5260}
4447#endif 5261#endif
4448 5262
4449void 5263void
4450ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4451{ 5265{
4452 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4453 return; 5267 return;
4454 5268
4455 { 5269 {
4456 EV_P = w->other; 5270 EV_P = w->other;
4457 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4465 5279
4466 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4467 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4468 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4469 5283
5284#if EV_FORK_ENABLE
4470 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4471 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4472 5288
4473 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4474 5290
4475 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4476 5292
4477 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4478} 5294}
4479 5295
4480void 5296void
4481ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4482{ 5298{
4483 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4484 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4485 return; 5301 return;
4486 5302
4487 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4488 5304
4489 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4490 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4491 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4492 5310
4493 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4494 5312
4495 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4496} 5314}
4497#endif 5315#endif
4498 5316
4499#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4500void 5318void
4501ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4502{ 5320{
4503 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4504 return; 5322 return;
4505 5323
4506 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4507 5325
4508 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4509 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4510 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4511 5329
4512 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4513} 5331}
4514 5332
4515void 5333void
4516ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4517{ 5335{
4518 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4519 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4520 return; 5338 return;
4521 5339
4522 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4523 5341
4524 { 5342 {
… …
4534} 5352}
4535#endif 5353#endif
4536 5354
4537#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4538void 5356void
4539ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4540{ 5358{
4541 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4542 return; 5360 return;
4543 5361
4544 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4545 5363
4546 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4547 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4548 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4549 5367
4550 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4551 ev_unref (EV_A); 5369 ev_unref (EV_A);
4552 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4553} 5371}
4554 5372
4555void 5373void
4556ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4557{ 5375{
4558 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4559 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4560 return; 5378 return;
4561 5379
4562 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4563 ev_ref (EV_A); 5381 ev_ref (EV_A);
4564 5382
… …
4575} 5393}
4576#endif 5394#endif
4577 5395
4578#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4579void 5397void
4580ev_async_start (EV_P_ ev_async *w) EV_THROW 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4581{ 5399{
4582 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4583 return; 5401 return;
4584 5402
4585 w->sent = 0; 5403 w->sent = 0;
4586 5404
4587 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4588 5406
4589 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4590 5408
4591 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4592 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4593 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4594 5412
4595 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4596} 5414}
4597 5415
4598void 5416void
4599ev_async_stop (EV_P_ ev_async *w) EV_THROW 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4600{ 5418{
4601 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4602 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4603 return; 5421 return;
4604 5422
4605 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4606 5424
4607 { 5425 {
… …
4615 5433
4616 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4617} 5435}
4618 5436
4619void 5437void
4620ev_async_send (EV_P_ ev_async *w) EV_THROW 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4621{ 5439{
4622 w->sent = 1; 5440 w->sent = 1;
4623 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4624} 5442}
4625#endif 5443#endif
… …
4662 5480
4663 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4664} 5482}
4665 5483
4666void 5484void
4667ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4668{ 5486{
4669 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4670
4671 if (expect_false (!once))
4672 {
4673 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4674 return;
4675 }
4676 5488
4677 once->cb = cb; 5489 once->cb = cb;
4678 once->arg = arg; 5490 once->arg = arg;
4679 5491
4680 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4693} 5505}
4694 5506
4695/*****************************************************************************/ 5507/*****************************************************************************/
4696 5508
4697#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4698void ecb_cold 5510ecb_cold
5511void
4699ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4700{ 5513{
4701 int i, j; 5514 int i, j;
4702 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4703 5516
4704 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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