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Comparing libev/ev.c (file contents):
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 UTC vs.
Revision 1.526 by root, Wed Jan 22 17:11:33 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 270#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 272#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 274#else
246# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 276#endif
251 277
252#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
254#endif 280#endif
255 281
256#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 285# else
260# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
287# endif
288#endif
289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
261# endif 296# endif
262#endif 297#endif
263 298
264#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 342
308#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 344# define EV_USE_PORT 0
310#endif 345#endif
311 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
312#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 366# else
316# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
339# else 390# else
340# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
341# endif 392# endif
342#endif 393#endif
343 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
344#if 0 /* debugging */ 403#if 0 /* debugging */
345# define EV_VERIFY 3 404# define EV_VERIFY 3
346# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
348#endif 407#endif
… …
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_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
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 0x00010002 650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
521 653
522#ifdef _WIN32 654#ifdef _WIN32
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
691 #endif
692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
551 #endif 711 #endif
552#endif 712#endif
553 713
554/* many compilers define _GNUC_ to some versions but then only implement 714/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions, 715 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so. 717 * or so.
558 * 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
559 * 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.
560 */ 720 */
561#ifndef ECB_GCC_VERSION
562 #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__
563 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
564 #else 723#else
565 #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)))
566 #endif 725#endif
567#endif
568 726
569#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)))
570#define ECB_C99 (__STDC_VERSION__ >= 199901L) 728
571#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
572#define ECB_CPP (__cplusplus+0) 741#define ECB_CPP (__cplusplus+0)
573#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)
574 757
575#if ECB_CPP 758#if ECB_CPP
576 #define ECB_EXTERN_C extern "C" 759 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END } 761 #define ECB_EXTERN_C_END }
… …
593 776
594#if ECB_NO_SMP 777#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
596#endif 779#endif
597 780
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
598#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
599 #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")
600 #if __i386 || __i386__ 793 #if __i386 || __i386__
601 #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")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #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 */
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
612 #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")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__ 817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
617 #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")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__ 825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
624 #elif defined __alpha__ 829 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__ 831 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__ 834 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
631 #endif 842 #endif
632 #endif 843 #endif
633#endif 844#endif
634 845
635#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7) 847 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */ 848 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #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)
639 853
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 854 #elif ECB_CLANG_EXTENSION(c_atomic)
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model. 855 /* see comment below (stdatomic.h) about the C11 memory model. */
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */ 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)
648 860
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #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()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #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 */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32 874 #elif defined _WIN32
657 #include <WinNT.h> 875 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h> 878 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
663 #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 ()
664 #elif __xlC__ 883 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
666 #endif 885 #endif
667#endif 886#endif
668 887
669#ifndef ECB_MEMORY_FENCE 888#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* 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, */
672 /* not just C11 atomics and atomic accesses */ 891 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h> 892 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #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)
681 #endif 896 #endif
682#endif 897#endif
683 898
684#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
705 920
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif 923#endif
709 924
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
710/*****************************************************************************/ 929/*****************************************************************************/
711 930
712#if __cplusplus 931#if ECB_CPP
713 #define ecb_inline static inline 932 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
716#elif ECB_C99 935#elif ECB_C99
717 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
731 950
732#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
735#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))
736 956
737#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
738 958
739#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
740 #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)
741 #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)
742 #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)
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else 983#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
749#endif 985#endif
750 986
751/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
752#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; };
753 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
754#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
755 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
756#endif 994#endif
757 995
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
758#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
759#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
762 1019
763#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 */
764 #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)
765#else 1028#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif 1030#endif
768 1031
769#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
… …
784/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
787 1050
788/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
789#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))
790 /* 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 */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */ 1062 /* no popcountll */
797#else 1063#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
799 ecb_function_ int 1065 ecb_function_ ecb_const int
800 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
801 { 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
802 int r = 0; 1073 int r = 0;
803 1074
804 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
805 1076
806#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
816 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
818#endif 1089#endif
819 1090
820 return r; 1091 return r;
1092#endif
821 } 1093 }
822 1094
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
824 ecb_function_ int 1096 ecb_function_ ecb_const int
825 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
826 { 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
827 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
829 } 1107 }
830 1108
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
832 ecb_function_ int 1110 ecb_function_ ecb_const int
833 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
834 { 1112 {
835 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101; 1116 x *= 0x01010101;
839 1117
840 return x >> 24; 1118 return x >> 24;
841 } 1119 }
842 1120
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
844 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
845 { 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
846 int r = 0; 1129 int r = 0;
847 1130
848 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
853 1136
854 return r; 1137 return r;
1138#endif
855 } 1139 }
856 1140
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
858 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
859 { 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
860 int r = 0; 1149 int r = 0;
861 1150
862 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
863 1152
864 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
865 } 1155 }
866#endif 1156#endif
867 1157
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
869ecb_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)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
871ecb_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)); }
872 1162
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
875{ 1165{
876 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878} 1168}
879 1169
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
882{ 1172{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
887 1177
888 return x; 1178 return x;
889} 1179}
890 1180
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
893{ 1183{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
900 return x; 1190 return x;
901} 1191}
902 1192
903/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */ 1194/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
906ecb_function_ int 1196ecb_function_ ecb_const int
907ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
908{ 1198{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910} 1200}
911 1201
912ecb_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);
913ecb_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);
914ecb_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);
915ecb_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);
916ecb_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);
917ecb_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);
918ecb_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);
919ecb_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);
920 1210
921ecb_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); }
922ecb_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); }
923ecb_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); }
924ecb_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); }
925ecb_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); }
926ecb_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); }
927ecb_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); }
928ecb_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); }
929 1219
930#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
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
932 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #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)))
934#else 1271#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
936 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
937 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
938 { 1275 {
939 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
940 } 1277 }
941 1278
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
943 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
944 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
945 { 1282 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 } 1284 }
948 1285
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
950 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
951 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
952 { 1289 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 } 1291 }
955#endif 1292#endif
956 1293
957#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
958 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
959#else 1296#else
960 /* 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 :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
962 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
963#endif 1300#endif
964 1301
965/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967 1304
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
969ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
970ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
971{ 1308{
972 /* the union code still generates code under pressure in gcc, */ 1309 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */ 1310 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */ 1311 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */ 1312 /* the reason why we have this horrible preprocessor mess */
976 /* 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 */
977 /* or when using a recent enough gcc version (>= 4.6) */ 1314 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#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
981 return 0x44; 1318 return 0x44332211;
982#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
983 return 0x11; 1322 return 0x11223344;
984#else 1323#else
985 union 1324 union
986 { 1325 {
1326 uint8_t c[4];
987 uint32_t i; 1327 uint32_t u;
988 uint8_t c;
989 } u = { 0x11223344 }; 1328 } u = { 0x11, 0x22, 0x33, 0x44 };
990 return u.c; 1329 return u.u;
991#endif 1330#endif
992} 1331}
993 1332
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
995ecb_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; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
997ecb_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/*****************************************************************************/
998 1409
999#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #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))
1001#else 1412#else
1002 #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)))
1003#endif 1414#endif
1004 1415
1005#if __cplusplus 1416#if ECB_CPP
1006 template<typename T> 1417 template<typename T>
1007 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
1008 { 1419 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 } 1421 }
… …
1027 } 1438 }
1028#else 1439#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif 1441#endif
1031 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
1032/*******************************************************************************/ 1541/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034 1543
1035/* basically, everything uses "ieee pure-endian" floating point numbers */ 1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \ 1546#if 0 \
1038 || __i386 || __i386__ \ 1547 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1548 || ECB_GCC_AMD64 \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \ 1550 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \ 1551 || defined __mips__ \
1044 || defined __alpha__ \ 1552 || defined __alpha__ \
1045 || defined __hppa__ \ 1553 || defined __hppa__ \
1046 || defined __ia64__ \ 1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1047 || 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__
1048 #define ECB_STDFP 1 1561 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else 1562#else
1051 #define ECB_STDFP 0 1563 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif 1564#endif
1054 1565
1055#ifndef ECB_NO_LIBM 1566#ifndef ECB_NO_LIBM
1056 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
1057 /* convert a float to ieee single/binary32 */ 1591 /* convert a float to ieee single/binary32 */
1058 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);
1059 ecb_function_ uint32_t 1593 ecb_function_ ecb_const uint32_t
1060 ecb_float_to_binary32 (float x) 1594 ecb_float_to_binary32 (float x)
1061 { 1595 {
1062 uint32_t r; 1596 uint32_t r;
1063 1597
1064 #if ECB_STDFP 1598 #if ECB_STDFP
… …
1071 if (x == 0e0f ) return 0x00000000U; 1605 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU; 1608 if (x != x ) return 0x7fbfffffU;
1075 1609
1076 m = frexpf (x, &e) * 0x1000000U; 1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1077 1611
1078 r = m & 0x80000000U; 1612 r = m & 0x80000000U;
1079 1613
1080 if (r) 1614 if (r)
1081 m = -m; 1615 m = -m;
… …
1093 1627
1094 return r; 1628 return r;
1095 } 1629 }
1096 1630
1097 /* converts an ieee single/binary32 to a float */ 1631 /* converts an ieee single/binary32 to a float */
1098 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);
1099 ecb_function_ float 1633 ecb_function_ ecb_const float
1100 ecb_binary32_to_float (uint32_t x) 1634 ecb_binary32_to_float (uint32_t x)
1101 { 1635 {
1102 float r; 1636 float r;
1103 1637
1104 #if ECB_STDFP 1638 #if ECB_STDFP
… …
1114 x |= 0x800000U; 1648 x |= 0x800000U;
1115 else 1649 else
1116 e = 1; 1650 e = 1;
1117 1651
1118 /* 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 */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1120 1654
1121 r = neg ? -r : r; 1655 r = neg ? -r : r;
1122 #endif 1656 #endif
1123 1657
1124 return r; 1658 return r;
1125 } 1659 }
1126 1660
1127 /* convert a double to ieee double/binary64 */ 1661 /* convert a double to ieee double/binary64 */
1128 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);
1129 ecb_function_ uint64_t 1663 ecb_function_ ecb_const uint64_t
1130 ecb_double_to_binary64 (double x) 1664 ecb_double_to_binary64 (double x)
1131 { 1665 {
1132 uint64_t r; 1666 uint64_t r;
1133 1667
1134 #if ECB_STDFP 1668 #if ECB_STDFP
… …
1163 1697
1164 return r; 1698 return r;
1165 } 1699 }
1166 1700
1167 /* converts an ieee double/binary64 to a double */ 1701 /* converts an ieee double/binary64 to a double */
1168 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);
1169 ecb_function_ double 1703 ecb_function_ ecb_const double
1170 ecb_binary64_to_double (uint64_t x) 1704 ecb_binary64_to_double (uint64_t x)
1171 { 1705 {
1172 double r; 1706 double r;
1173 1707
1174 #if ECB_STDFP 1708 #if ECB_STDFP
… …
1192 #endif 1726 #endif
1193 1727
1194 return r; 1728 return r;
1195 } 1729 }
1196 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
1197#endif 1747#endif
1198 1748
1199#endif 1749#endif
1200 1750
1201/* ECB.H END */ 1751/* ECB.H END */
1202 1752
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* 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
1205 * 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
1206 * 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
1207 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
1210 */ 1760 */
1211# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
1215# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif 1768#endif
1219 1769
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
1224#define inline_size ecb_inline 1770#define inline_size ecb_inline
1225 1771
1226#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
1227# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
1228#else 1774#else
1229# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
1230#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/*****************************************************************************/
1231 1843
1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1233 1845
1234#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
1235# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
1236#else 1848#else
1237# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1238#endif 1850#endif
1239 1851
1240#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
1241#define EMPTY2(a,b) /* used to suppress some warnings */
1242 1853
1243typedef ev_watcher *W; 1854typedef ev_watcher *W;
1244typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
1245typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
1246 1857
… …
1271# include "ev_win32.c" 1882# include "ev_win32.c"
1272#endif 1883#endif
1273 1884
1274/*****************************************************************************/ 1885/*****************************************************************************/
1275 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1276/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1277 1892
1278#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1279# include <math.h> 1894# include <math.h>
1280# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1281#else 1896#else
1282 1897
1283#include <float.h> 1898#include <float.h>
1284 1899
1285/* 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
1286static ev_tstamp noinline 1902static ev_tstamp
1287ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1288{ 1904{
1289 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else 1908#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif 1910#endif
1295 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
1296 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1297 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1298 { 1922 {
1299 ev_tstamp f; 1923 ev_tstamp f;
1300 1924
1301 if (v == v - 1.) 1925 if (v == v - 1.)
1302 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1303 1927
1304 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1306 } 1930 }
1307 1931
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1317 return (unsigned long)v; 1933 return (unsigned long)v;
1318} 1934}
1319 1935
1320#endif 1936#endif
… …
1323 1939
1324#ifdef __linux 1940#ifdef __linux
1325# include <sys/utsname.h> 1941# include <sys/utsname.h>
1326#endif 1942#endif
1327 1943
1328static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1329ev_linux_version (void) 1946ev_linux_version (void)
1330{ 1947{
1331#ifdef __linux 1948#ifdef __linux
1332 unsigned int v = 0; 1949 unsigned int v = 0;
1333 struct utsname buf; 1950 struct utsname buf;
… …
1362} 1979}
1363 1980
1364/*****************************************************************************/ 1981/*****************************************************************************/
1365 1982
1366#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1367static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1368ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1369{ 1987{
1370 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1371} 1989}
1372#endif 1990#endif
1373 1991
1374static void (*syserr_cb)(const char *msg) EV_THROW; 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1375 1993
1376void ecb_cold 1994ecb_cold
1995void
1377ev_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
1378{ 1997{
1379 syserr_cb = cb; 1998 syserr_cb = cb;
1380} 1999}
1381 2000
1382static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1383ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1384{ 2004{
1385 if (!msg) 2005 if (!msg)
1386 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1387 2007
… …
1400 abort (); 2020 abort ();
1401 } 2021 }
1402} 2022}
1403 2023
1404static void * 2024static void *
1405ev_realloc_emul (void *ptr, long size) EV_THROW 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1406{ 2026{
1407 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1408 * 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
1409 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it, 2030 * recently, also (at least) fedora and debian started breaking it,
… …
1416 2036
1417 free (ptr); 2037 free (ptr);
1418 return 0; 2038 return 0;
1419} 2039}
1420 2040
1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1422 2042
1423void ecb_cold 2043ecb_cold
2044void
1424ev_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
1425{ 2046{
1426 alloc = cb; 2047 alloc = cb;
1427} 2048}
1428 2049
1429inline_speed void * 2050inline_speed void *
… …
1456typedef struct 2077typedef struct
1457{ 2078{
1458 WL head; 2079 WL head;
1459 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1460 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) */
1461 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 */
1462 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1463#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1464 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1465#endif 2086#endif
1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1467 SOCKET handle; 2088 SOCKET handle;
… …
1521 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1522 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 */
1523 2144
1524#else 2145#else
1525 2146
1526 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 */
1527 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1528 #include "ev_vars.h" 2149 #include "ev_vars.h"
1529 #undef VAR 2150 #undef VAR
1530 2151
1531 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1532 2153
1533#endif 2154#endif
1534 2155
1535#if EV_FEATURE_API 2156#if EV_FEATURE_API
1536# 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)
1537# 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)
1538# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1539#else 2160#else
1540# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1541# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1546 2167
1547/*****************************************************************************/ 2168/*****************************************************************************/
1548 2169
1549#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1550ev_tstamp 2171ev_tstamp
1551ev_time (void) EV_THROW 2172ev_time (void) EV_NOEXCEPT
1552{ 2173{
1553#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1554 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1555 { 2176 {
1556 struct timespec ts; 2177 struct timespec ts;
1557 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1558 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1559 } 2180 }
1560#endif 2181#endif
1561 2182
2183 {
1562 struct timeval tv; 2184 struct timeval tv;
1563 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1564 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1565} 2188}
1566#endif 2189#endif
1567 2190
1568inline_size ev_tstamp 2191inline_size ev_tstamp
1569get_clock (void) 2192get_clock (void)
1570{ 2193{
1571#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1572 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1573 { 2196 {
1574 struct timespec ts; 2197 struct timespec ts;
1575 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1576 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1577 } 2200 }
1578#endif 2201#endif
1579 2202
1580 return ev_time (); 2203 return ev_time ();
1581} 2204}
1582 2205
1583#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1584ev_tstamp 2207ev_tstamp
1585ev_now (EV_P) EV_THROW 2208ev_now (EV_P) EV_NOEXCEPT
1586{ 2209{
1587 return ev_rt_now; 2210 return ev_rt_now;
1588} 2211}
1589#endif 2212#endif
1590 2213
1591void 2214void
1592ev_sleep (ev_tstamp delay) EV_THROW 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1593{ 2216{
1594 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1595 { 2218 {
1596#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1597 struct timespec ts; 2220 struct timespec ts;
1598 2221
1599 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1600 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1601#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) */
1602 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1603#else 2228#else
1604 struct timeval tv; 2229 struct timeval tv;
1605 2230
1606 /* 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 */
1607 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1637 } 2262 }
1638 2263
1639 return ncur; 2264 return ncur;
1640} 2265}
1641 2266
1642static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1643array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1644{ 2270{
1645 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1646 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1647} 2273}
1648 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1649#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1650 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1651 2279
1652#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1653 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1654 { \ 2282 { \
1655 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1656 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1657 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1658 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1659 } 2287 }
1660 2288
1661#if 0 2289#if 0
1662#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1663 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1672 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
1673 2301
1674/*****************************************************************************/ 2302/*****************************************************************************/
1675 2303
1676/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1677static void noinline 2305ecb_noinline
2306static void
1678pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1679{ 2308{
1680} 2309}
1681 2310
1682void noinline 2311ecb_noinline
2312void
1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1684{ 2314{
1685 W w_ = (W)w; 2315 W w_ = (W)w;
1686 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1687 2317
1688 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1689 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1690 else 2320 else
1691 { 2321 {
1692 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1694 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1695 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1696 } 2326 }
1697 2327
1698 pendingpri = NUMPRI - 1; 2328 pendingpri = NUMPRI - 1;
1699} 2329}
1700 2330
1701inline_speed void 2331inline_speed void
1702feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1703{ 2333{
1704 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1705 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1706} 2336}
1707 2337
1708inline_size void 2338inline_size void
1709feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1744inline_speed void 2374inline_speed void
1745fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1746{ 2376{
1747 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1748 2378
1749 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1750 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1751} 2381}
1752 2382
1753void 2383void
1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1755{ 2385{
1756 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1757 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1758} 2388}
1759 2389
… …
1762inline_size void 2392inline_size void
1763fd_reify (EV_P) 2393fd_reify (EV_P)
1764{ 2394{
1765 int i; 2395 int i;
1766 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
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1769 { 2411 {
1770 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1772 2414
1773 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1787 } 2429 }
1788 } 2430 }
1789 } 2431 }
1790#endif 2432#endif
1791 2433
1792 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1793 { 2435 {
1794 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1795 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1796 ev_io *w; 2438 ev_io *w;
1797 2439
1798 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1800 2442
1801 anfd->reify = 0; 2443 anfd->reify = 0;
1802 2444
1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1804 { 2446 {
1805 anfd->events = 0; 2447 anfd->events = 0;
1806 2448
1807 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)
1808 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1813 2455
1814 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1815 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1816 } 2458 }
1817 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
1818 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1819} 2468}
1820 2469
1821/* something about the given fd changed */ 2470/* something about the given fd changed */
1822inline_size void 2471inline_size
2472void
1823fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1824{ 2474{
1825 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1826 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1827 2477
1828 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1829 { 2479 {
1830 ++fdchangecnt; 2480 ++fdchangecnt;
1831 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1832 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1833 } 2483 }
1834} 2484}
1835 2485
1836/* 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 */
1837inline_speed void ecb_cold 2487inline_speed ecb_cold void
1838fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1839{ 2489{
1840 ev_io *w; 2490 ev_io *w;
1841 2491
1842 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1845 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);
1846 } 2496 }
1847} 2497}
1848 2498
1849/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1850inline_size int ecb_cold 2500inline_size ecb_cold int
1851fd_valid (int fd) 2501fd_valid (int fd)
1852{ 2502{
1853#ifdef _WIN32 2503#ifdef _WIN32
1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1855#else 2505#else
1856 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1857#endif 2507#endif
1858} 2508}
1859 2509
1860/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1861static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1862fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1863{ 2514{
1864 int fd; 2515 int fd;
1865 2516
1866 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1868 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1869 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1870} 2521}
1871 2522
1872/* 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 */
1873static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1874fd_enomem (EV_P) 2526fd_enomem (EV_P)
1875{ 2527{
1876 int fd; 2528 int fd;
1877 2529
1878 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1882 break; 2534 break;
1883 } 2535 }
1884} 2536}
1885 2537
1886/* 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 */
1887static void noinline 2539ecb_noinline
2540static void
1888fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1889{ 2542{
1890 int fd; 2543 int fd;
1891 2544
1892 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1945 ev_tstamp minat; 2598 ev_tstamp minat;
1946 ANHE *minpos; 2599 ANHE *minpos;
1947 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1948 2601
1949 /* find minimum child */ 2602 /* find minimum child */
1950 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1951 { 2604 {
1952 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1953 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));
1954 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));
1955 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));
1956 } 2609 }
1957 else if (pos < E) 2610 else if (pos < E)
1958 { 2611 {
1959 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1960 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));
1961 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));
1962 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));
1963 } 2616 }
1964 else 2617 else
1965 break; 2618 break;
1966 2619
1967 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1975 2628
1976 heap [k] = he; 2629 heap [k] = he;
1977 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1978} 2631}
1979 2632
1980#else /* 4HEAP */ 2633#else /* not 4HEAP */
1981 2634
1982#define HEAP0 1 2635#define HEAP0 1
1983#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1984#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1985 2638
… …
2057 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
2058} 2711}
2059 2712
2060/*****************************************************************************/ 2713/*****************************************************************************/
2061 2714
2062/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
2063typedef struct 2716typedef struct
2064{ 2717{
2065 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
2066#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
2067 EV_P; 2720 EV_P;
… …
2073 2726
2074/*****************************************************************************/ 2727/*****************************************************************************/
2075 2728
2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2077 2730
2078static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
2079evpipe_init (EV_P) 2733evpipe_init (EV_P)
2080{ 2734{
2081 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
2082 { 2736 {
2083 int fds [2]; 2737 int fds [2];
… …
2094 while (pipe (fds)) 2748 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe"); 2749 ev_syserr ("(libev) error creating signal/async pipe");
2096 2750
2097 fd_intern (fds [0]); 2751 fd_intern (fds [0]);
2098 } 2752 }
2099
2100 fd_intern (fds [1]);
2101 2753
2102 evpipe [0] = fds [0]; 2754 evpipe [0] = fds [0];
2103 2755
2104 if (evpipe [1] < 0) 2756 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */ 2757 evpipe [1] = fds [1]; /* first call, set write fd */
… …
2112 2764
2113 dup2 (fds [1], evpipe [1]); 2765 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]); 2766 close (fds [1]);
2115 } 2767 }
2116 2768
2769 fd_intern (evpipe [1]);
2770
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); 2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w); 2772 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */ 2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 } 2774 }
2121} 2775}
… …
2123inline_speed void 2777inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{ 2779{
2126 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 */
2127 2781
2128 if (expect_true (*flag)) 2782 if (ecb_expect_true (*flag))
2129 return; 2783 return;
2130 2784
2131 *flag = 1; 2785 *flag = 1;
2132 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 */
2133 2787
… …
2154#endif 2808#endif
2155 { 2809 {
2156#ifdef _WIN32 2810#ifdef _WIN32
2157 WSABUF buf; 2811 WSABUF buf;
2158 DWORD sent; 2812 DWORD sent;
2159 buf.buf = &buf; 2813 buf.buf = (char *)&buf;
2160 buf.len = 1; 2814 buf.len = 1;
2161 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);
2162#else 2816#else
2163 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2164#endif 2818#endif
… …
2210 sig_pending = 0; 2864 sig_pending = 0;
2211 2865
2212 ECB_MEMORY_FENCE; 2866 ECB_MEMORY_FENCE;
2213 2867
2214 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
2215 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
2216 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
2217 } 2871 }
2218#endif 2872#endif
2219 2873
2220#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
… …
2236} 2890}
2237 2891
2238/*****************************************************************************/ 2892/*****************************************************************************/
2239 2893
2240void 2894void
2241ev_feed_signal (int signum) EV_THROW 2895ev_feed_signal (int signum) EV_NOEXCEPT
2242{ 2896{
2243#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2244 EV_P; 2898 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE; 2899 ECB_MEMORY_FENCE_ACQUIRE;
2246 EV_A = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
… …
2261#endif 2915#endif
2262 2916
2263 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
2264} 2918}
2265 2919
2266void noinline 2920ecb_noinline
2921void
2267ev_feed_signal_event (EV_P_ int signum) EV_THROW 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2268{ 2923{
2269 WL w; 2924 WL w;
2270 2925
2271 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2272 return; 2927 return;
2273 2928
2274 --signum; 2929 --signum;
2275 2930
2276#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
2277 /* 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 */
2278 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
2279 2934
2280 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
2281 return; 2936 return;
2282#endif 2937#endif
2283 2938
2284 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE; 2940 ECB_MEMORY_FENCE_RELEASE;
… …
2369 3024
2370#endif 3025#endif
2371 3026
2372/*****************************************************************************/ 3027/*****************************************************************************/
2373 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
2374#if EV_USE_IOCP 3080#if EV_USE_IOCP
2375# include "ev_iocp.c" 3081# include "ev_iocp.c"
2376#endif 3082#endif
2377#if EV_USE_PORT 3083#if EV_USE_PORT
2378# include "ev_port.c" 3084# include "ev_port.c"
… …
2381# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2382#endif 3088#endif
2383#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2384# include "ev_epoll.c" 3090# include "ev_epoll.c"
2385#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
2386#if EV_USE_POLL 3098#if EV_USE_POLL
2387# include "ev_poll.c" 3099# include "ev_poll.c"
2388#endif 3100#endif
2389#if EV_USE_SELECT 3101#if EV_USE_SELECT
2390# include "ev_select.c" 3102# include "ev_select.c"
2391#endif 3103#endif
2392 3104
2393int ecb_cold 3105ecb_cold int
2394ev_version_major (void) EV_THROW 3106ev_version_major (void) EV_NOEXCEPT
2395{ 3107{
2396 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2397} 3109}
2398 3110
2399int ecb_cold 3111ecb_cold int
2400ev_version_minor (void) EV_THROW 3112ev_version_minor (void) EV_NOEXCEPT
2401{ 3113{
2402 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2403} 3115}
2404 3116
2405/* 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 */
2406int inline_size ecb_cold 3118inline_size ecb_cold int
2407enable_secure (void) 3119enable_secure (void)
2408{ 3120{
2409#ifdef _WIN32 3121#ifdef _WIN32
2410 return 0; 3122 return 0;
2411#else 3123#else
2412 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2413 || getgid () != getegid (); 3125 || getgid () != getegid ();
2414#endif 3126#endif
2415} 3127}
2416 3128
2417unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2418ev_supported_backends (void) EV_THROW 3131ev_supported_backends (void) EV_NOEXCEPT
2419{ 3132{
2420 unsigned int flags = 0; 3133 unsigned int flags = 0;
2421 3134
2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2424 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2425 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2426 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2427 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2428 return flags; 3143 return flags;
2429} 3144}
2430 3145
2431unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2432ev_recommended_backends (void) EV_THROW 3148ev_recommended_backends (void) EV_NOEXCEPT
2433{ 3149{
2434 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2435 3151
2436#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2437 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2445#endif 3161#endif
2446#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2447 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) */
2448#endif 3164#endif
2449 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
2450 return flags; 3175 return flags;
2451} 3176}
2452 3177
2453unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2454ev_embeddable_backends (void) EV_THROW 3180ev_embeddable_backends (void) EV_NOEXCEPT
2455{ 3181{
2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2457 3183
2458 /* 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 */
2459 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 */
2460 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2461 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2462 return flags; 3190 return flags;
2463} 3191}
2464 3192
2465unsigned int 3193unsigned int
2466ev_backend (EV_P) EV_THROW 3194ev_backend (EV_P) EV_NOEXCEPT
2467{ 3195{
2468 return backend; 3196 return backend;
2469} 3197}
2470 3198
2471#if EV_FEATURE_API 3199#if EV_FEATURE_API
2472unsigned int 3200unsigned int
2473ev_iteration (EV_P) EV_THROW 3201ev_iteration (EV_P) EV_NOEXCEPT
2474{ 3202{
2475 return loop_count; 3203 return loop_count;
2476} 3204}
2477 3205
2478unsigned int 3206unsigned int
2479ev_depth (EV_P) EV_THROW 3207ev_depth (EV_P) EV_NOEXCEPT
2480{ 3208{
2481 return loop_depth; 3209 return loop_depth;
2482} 3210}
2483 3211
2484void 3212void
2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2486{ 3214{
2487 io_blocktime = interval; 3215 io_blocktime = interval;
2488} 3216}
2489 3217
2490void 3218void
2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2492{ 3220{
2493 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2494} 3222}
2495 3223
2496void 3224void
2497ev_set_userdata (EV_P_ void *data) EV_THROW 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2498{ 3226{
2499 userdata = data; 3227 userdata = data;
2500} 3228}
2501 3229
2502void * 3230void *
2503ev_userdata (EV_P) EV_THROW 3231ev_userdata (EV_P) EV_NOEXCEPT
2504{ 3232{
2505 return userdata; 3233 return userdata;
2506} 3234}
2507 3235
2508void 3236void
2509ev_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
2510{ 3238{
2511 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2512} 3240}
2513 3241
2514void 3242void
2515ev_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
2516{ 3244{
2517 release_cb = release; 3245 release_cb = release;
2518 acquire_cb = acquire; 3246 acquire_cb = acquire;
2519} 3247}
2520#endif 3248#endif
2521 3249
2522/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2523static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2524loop_init (EV_P_ unsigned int flags) EV_THROW 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2525{ 3254{
2526 if (!backend) 3255 if (!backend)
2527 { 3256 {
2528 origflags = flags; 3257 origflags = flags;
2529 3258
… …
2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2583#endif 3312#endif
2584#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2586#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2587 3319
2588 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2589 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2590 3322
2591#if EV_USE_IOCP 3323#if EV_USE_IOCP
2592 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2593#endif 3325#endif
2594#if EV_USE_PORT 3326#if EV_USE_PORT
2595 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2596#endif 3328#endif
2597#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2598 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);
2599#endif 3337#endif
2600#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2601 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2602#endif 3340#endif
2603#if EV_USE_POLL 3341#if EV_USE_POLL
2604 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2605#endif 3343#endif
2606#if EV_USE_SELECT 3344#if EV_USE_SELECT
2607 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2608#endif 3346#endif
2609 3347
2610 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2611 3349
2612#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2615#endif 3353#endif
2616 } 3354 }
2617} 3355}
2618 3356
2619/* free up a loop structure */ 3357/* free up a loop structure */
2620void ecb_cold 3358ecb_cold
3359void
2621ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2622{ 3361{
2623 int i; 3362 int i;
2624 3363
2625#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2628 return; 3367 return;
2629#endif 3368#endif
2630 3369
2631#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2632 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2633 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2634 { 3373 {
2635 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2636 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2637 } 3376 }
2638#endif 3377#endif
… …
2657#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2658 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2659 close (sigfd); 3398 close (sigfd);
2660#endif 3399#endif
2661 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2662#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2663 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2664 close (fs_fd); 3408 close (fs_fd);
2665#endif 3409#endif
2666 3410
2667 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2668 close (backend_fd); 3412 close (backend_fd);
2669 3413
2670#if EV_USE_IOCP 3414#if EV_USE_IOCP
2671 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2672#endif 3416#endif
2673#if EV_USE_PORT 3417#if EV_USE_PORT
2674 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2675#endif 3419#endif
2676#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2677 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);
2678#endif 3428#endif
2679#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2680 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2681#endif 3431#endif
2682#if EV_USE_POLL 3432#if EV_USE_POLL
2683 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2684#endif 3434#endif
2685#if EV_USE_SELECT 3435#if EV_USE_SELECT
2686 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2687#endif 3437#endif
2688 3438
2689 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2690 { 3440 {
2691 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
2733 3483
2734inline_size void 3484inline_size void
2735loop_fork (EV_P) 3485loop_fork (EV_P)
2736{ 3486{
2737#if EV_USE_PORT 3487#if EV_USE_PORT
2738 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2739#endif 3489#endif
2740#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
2741 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);
2742#endif 3498#endif
2743#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
2744 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2745#endif 3501#endif
2746#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2747 infy_fork (EV_A); 3503 infy_fork (EV_A);
2748#endif 3504#endif
2749 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
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2751 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
2752 { 3529 {
2753 /* 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 */
2754 3531
2755 ev_ref (EV_A); 3532 ev_ref (EV_A);
2756 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
2757 3534
2758 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
2759 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
2760 3537
2761 evpipe_init (EV_A); 3538 evpipe_init (EV_A);
2762 /* iterate over everything, in case we missed something before */ 3539 /* iterate over everything, in case we missed something before */
2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3541 }
3542 #endif
2764 } 3543 }
2765#endif
2766 3544
2767 postfork = 0; 3545 postfork = 0;
2768} 3546}
2769 3547
2770#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2771 3549
3550ecb_cold
2772struct ev_loop * ecb_cold 3551struct ev_loop *
2773ev_loop_new (unsigned int flags) EV_THROW 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
2774{ 3553{
2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2776 3555
2777 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
2778 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
2785} 3564}
2786 3565
2787#endif /* multiplicity */ 3566#endif /* multiplicity */
2788 3567
2789#if EV_VERIFY 3568#if EV_VERIFY
2790static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
2791verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
2792{ 3572{
2793 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));
2794 3574
2795 if (w->pending) 3575 if (w->pending)
2796 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));
2797} 3577}
2798 3578
2799static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
2800verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
2801{ 3582{
2802 int i; 3583 int i;
2803 3584
2804 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2809 3590
2810 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2811 } 3592 }
2812} 3593}
2813 3594
2814static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
2815array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
2816{ 3598{
2817 while (cnt--) 3599 while (cnt--)
2818 { 3600 {
2819 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2822} 3604}
2823#endif 3605#endif
2824 3606
2825#if EV_FEATURE_API 3607#if EV_FEATURE_API
2826void ecb_cold 3608void ecb_cold
2827ev_verify (EV_P) EV_THROW 3609ev_verify (EV_P) EV_NOEXCEPT
2828{ 3610{
2829#if EV_VERIFY 3611#if EV_VERIFY
2830 int i; 3612 int i;
2831 WL w, w2; 3613 WL w, w2;
2832 3614
… …
2908#endif 3690#endif
2909} 3691}
2910#endif 3692#endif
2911 3693
2912#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
2913struct ev_loop * ecb_cold 3696struct ev_loop *
2914#else 3697#else
2915int 3698int
2916#endif 3699#endif
2917ev_default_loop (unsigned int flags) EV_THROW 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
2918{ 3701{
2919 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
2920 { 3703 {
2921#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
2922 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2941 3724
2942 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2943} 3726}
2944 3727
2945void 3728void
2946ev_loop_fork (EV_P) EV_THROW 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2947{ 3730{
2948 postfork = 1; 3731 postfork = 1;
2949} 3732}
2950 3733
2951/*****************************************************************************/ 3734/*****************************************************************************/
… …
2955{ 3738{
2956 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2957} 3740}
2958 3741
2959unsigned int 3742unsigned int
2960ev_pending_count (EV_P) EV_THROW 3743ev_pending_count (EV_P) EV_NOEXCEPT
2961{ 3744{
2962 int pri; 3745 int pri;
2963 unsigned int count = 0; 3746 unsigned int count = 0;
2964 3747
2965 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2966 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2967 3750
2968 return count; 3751 return count;
2969} 3752}
2970 3753
2971void noinline 3754ecb_noinline
3755void
2972ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2973{ 3757{
2974 pendingpri = NUMPRI; 3758 pendingpri = NUMPRI;
2975 3759
2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3760 do
2977 { 3761 {
2978 --pendingpri; 3762 --pendingpri;
2979 3763
3764 /* pendingpri possibly gets modified in the inner loop */
2980 while (pendingcnt [pendingpri]) 3765 while (pendingcnt [pendingpri])
2981 { 3766 {
2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2983 3768
2984 p->w->pending = 0; 3769 p->w->pending = 0;
2985 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2986 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2987 } 3772 }
2988 } 3773 }
3774 while (pendingpri);
2989} 3775}
2990 3776
2991#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2992/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2993/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2994inline_size void 3780inline_size void
2995idle_reify (EV_P) 3781idle_reify (EV_P)
2996{ 3782{
2997 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2998 { 3784 {
2999 int pri; 3785 int pri;
3000 3786
3001 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
3002 { 3788 {
… …
3032 { 3818 {
3033 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
3034 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
3035 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
3036 3822
3037 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.)));
3038 3824
3039 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
3040 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
3041 } 3827 }
3042 else 3828 else
… …
3051 } 3837 }
3052} 3838}
3053 3839
3054#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3055 3841
3056static void noinline 3842ecb_noinline
3843static void
3057periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
3058{ 3845{
3059 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3060 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);
3061 3848
… …
3063 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
3064 { 3851 {
3065 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
3066 3853
3067 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
3068 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
3069 { 3856 {
3070 at = ev_rt_now; 3857 at = ev_rt_now;
3071 break; 3858 break;
3072 } 3859 }
3073 3860
… …
3119 } 3906 }
3120} 3907}
3121 3908
3122/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
3123/* 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? */
3124static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
3125periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
3126{ 3914{
3127 int i; 3915 int i;
3128 3916
3129 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
3142 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
3143} 3931}
3144#endif 3932#endif
3145 3933
3146/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
3147static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
3148timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
3149{ 3938{
3150 int i; 3939 int i;
3151 3940
3152 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
3161/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
3162inline_speed void 3951inline_speed void
3163time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
3164{ 3953{
3165#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
3166 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
3167 { 3956 {
3168 int i; 3957 int i;
3169 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
3170 3959
3171 mn_now = get_clock (); 3960 mn_now = get_clock ();
3172 3961
3173 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3174 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
3175 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)))
3176 { 3965 {
3177 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
3178 return; 3967 return;
3179 } 3968 }
3180 3969
… …
3194 ev_tstamp diff; 3983 ev_tstamp diff;
3195 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
3196 3985
3197 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
3198 3987
3199 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)))
3200 return; /* all is well */ 3989 return; /* all is well */
3201 3990
3202 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
3203 mn_now = get_clock (); 3992 mn_now = get_clock ();
3204 now_floor = mn_now; 3993 now_floor = mn_now;
… …
3213 else 4002 else
3214#endif 4003#endif
3215 { 4004 {
3216 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
3217 4006
3218 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)))
3219 { 4008 {
3220 /* 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 */
3221 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3222#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
3223 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
3246#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
3247 ev_verify (EV_A); 4036 ev_verify (EV_A);
3248#endif 4037#endif
3249 4038
3250#ifndef _WIN32 4039#ifndef _WIN32
3251 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3252 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
3253 { 4042 {
3254 curpid = getpid (); 4043 curpid = getpid ();
3255 postfork = 1; 4044 postfork = 1;
3256 } 4045 }
3257#endif 4046#endif
3258 4047
3259#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
3260 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
3261 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
3262 if (forkcnt) 4051 if (forkcnt)
3263 { 4052 {
3264 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3265 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3266 } 4055 }
3267#endif 4056#endif
3268 4057
3269#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
3270 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
3271 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
3272 { 4061 {
3273 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3274 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
3275 } 4064 }
3276#endif 4065#endif
3277 4066
3278 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
3279 break; 4068 break;
3280 4069
3281 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
3282 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
3283 loop_fork (EV_A); 4072 loop_fork (EV_A);
3284 4073
3285 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
3286 fd_reify (EV_A); 4075 fd_reify (EV_A);
3287 4076
… …
3292 4081
3293 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
3294 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
3295 4084
3296 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3297 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3298 4087
3299 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3300 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3301 4090
3302 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 */
3303 4092
3304 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3305 { 4094 {
3306 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
3307 4108
3308 if (timercnt) 4109 if (timercnt)
3309 { 4110 {
3310 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3311 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3318 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3319 } 4120 }
3320#endif 4121#endif
3321 4122
3322 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3323 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3324 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3325 4126
3326 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3327 /* 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 */
3328 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.)
3329 waittime = backend_mintime; 4135 : backend_mintime;
3330 4136
3331 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3332 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3333 { 4139 {
3334 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3335 4141
3336 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3337 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3338 4144
3339 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3340 { 4146 {
3341 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3342 waittime -= sleeptime; 4148 waittime -= sleeptime;
3343 } 4149 }
3344 } 4150 }
… …
3358 { 4164 {
3359 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)));
3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3361 } 4167 }
3362 4168
3363
3364 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3365 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3366 } 4171 }
3367 4172
3368 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3376 idle_reify (EV_A); 4181 idle_reify (EV_A);
3377#endif 4182#endif
3378 4183
3379#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3380 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3381 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3382 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3383#endif 4188#endif
3384 4189
3385 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3386 } 4191 }
3387 while (expect_true ( 4192 while (ecb_expect_true (
3388 activecnt 4193 activecnt
3389 && !loop_done 4194 && !loop_done
3390 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3391 )); 4196 ));
3392 4197
… …
3399 4204
3400 return activecnt; 4205 return activecnt;
3401} 4206}
3402 4207
3403void 4208void
3404ev_break (EV_P_ int how) EV_THROW 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3405{ 4210{
3406 loop_done = how; 4211 loop_done = how;
3407} 4212}
3408 4213
3409void 4214void
3410ev_ref (EV_P) EV_THROW 4215ev_ref (EV_P) EV_NOEXCEPT
3411{ 4216{
3412 ++activecnt; 4217 ++activecnt;
3413} 4218}
3414 4219
3415void 4220void
3416ev_unref (EV_P) EV_THROW 4221ev_unref (EV_P) EV_NOEXCEPT
3417{ 4222{
3418 --activecnt; 4223 --activecnt;
3419} 4224}
3420 4225
3421void 4226void
3422ev_now_update (EV_P) EV_THROW 4227ev_now_update (EV_P) EV_NOEXCEPT
3423{ 4228{
3424 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3425} 4230}
3426 4231
3427void 4232void
3428ev_suspend (EV_P) EV_THROW 4233ev_suspend (EV_P) EV_NOEXCEPT
3429{ 4234{
3430 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3431} 4236}
3432 4237
3433void 4238void
3434ev_resume (EV_P) EV_THROW 4239ev_resume (EV_P) EV_NOEXCEPT
3435{ 4240{
3436 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3437 4242
3438 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3439 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3456inline_size void 4261inline_size void
3457wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3458{ 4263{
3459 while (*head) 4264 while (*head)
3460 { 4265 {
3461 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3462 { 4267 {
3463 *head = elem->next; 4268 *head = elem->next;
3464 break; 4269 break;
3465 } 4270 }
3466 4271
… …
3478 w->pending = 0; 4283 w->pending = 0;
3479 } 4284 }
3480} 4285}
3481 4286
3482int 4287int
3483ev_clear_pending (EV_P_ void *w) EV_THROW 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3484{ 4289{
3485 W w_ = (W)w; 4290 W w_ = (W)w;
3486 int pending = w_->pending; 4291 int pending = w_->pending;
3487 4292
3488 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3489 { 4294 {
3490 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3491 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3492 w_->pending = 0; 4297 w_->pending = 0;
3493 return p->events; 4298 return p->events;
… …
3520 w->active = 0; 4325 w->active = 0;
3521} 4326}
3522 4327
3523/*****************************************************************************/ 4328/*****************************************************************************/
3524 4329
3525void noinline 4330ecb_noinline
4331void
3526ev_io_start (EV_P_ ev_io *w) EV_THROW 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3527{ 4333{
3528 int fd = w->fd; 4334 int fd = w->fd;
3529 4335
3530 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3531 return; 4337 return;
3532 4338
3533 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3534 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))));
3535 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3536 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3537 4346
3538 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3540 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
3541 4350
3542 /* common bug, apparently */ 4351 /* common bug, apparently */
3543 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));
3544 4353
… …
3546 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3547 4356
3548 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3549} 4358}
3550 4359
3551void noinline 4360ecb_noinline
4361void
3552ev_io_stop (EV_P_ ev_io *w) EV_THROW 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3553{ 4363{
3554 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3555 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3556 return; 4366 return;
3557 4367
3558 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));
3559 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3560 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3561 4374
3562 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3563 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3564 4377
3565 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3566 4379
3567 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3568} 4381}
3569 4382
3570void noinline 4383ecb_noinline
4384void
3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3572{ 4386{
3573 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3574 return; 4388 return;
3575 4389
3576 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3577 4391
3578 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.));
3579 4393
3580 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3581 4395
3582 ++timercnt; 4396 ++timercnt;
3583 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3584 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3585 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3586 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3587 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3588 4402
3589 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3590 4404
3591 /*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));*/
3592} 4406}
3593 4407
3594void noinline 4408ecb_noinline
4409void
3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3596{ 4411{
3597 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3598 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3599 return; 4414 return;
3600 4415
3601 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3602 4417
3603 { 4418 {
… …
3605 4420
3606 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));
3607 4422
3608 --timercnt; 4423 --timercnt;
3609 4424
3610 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3611 { 4426 {
3612 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3613 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3614 } 4429 }
3615 } 4430 }
… …
3619 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3620 4435
3621 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3622} 4437}
3623 4438
3624void noinline 4439ecb_noinline
4440void
3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3626{ 4442{
3627 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3628 4444
3629 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3630 4446
… …
3647 4463
3648 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3649} 4465}
3650 4466
3651ev_tstamp 4467ev_tstamp
3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3653{ 4469{
3654 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.));
3655} 4471}
3656 4472
3657#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3658void noinline 4474ecb_noinline
4475void
3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3660{ 4477{
3661 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3662 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3663 4485
3664 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3665 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3666 else if (w->interval) 4488 else if (w->interval)
3667 { 4489 {
… …
3673 4495
3674 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3675 4497
3676 ++periodiccnt; 4498 ++periodiccnt;
3677 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3678 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3679 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3680 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3681 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3682 4504
3683 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3684 4506
3685 /*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));*/
3686} 4508}
3687 4509
3688void noinline 4510ecb_noinline
4511void
3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3690{ 4513{
3691 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3692 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3693 return; 4516 return;
3694 4517
3695 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3696 4519
3697 { 4520 {
… …
3699 4522
3700 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));
3701 4524
3702 --periodiccnt; 4525 --periodiccnt;
3703 4526
3704 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
3705 { 4528 {
3706 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
3707 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
3708 } 4531 }
3709 } 4532 }
… …
3711 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3712 4535
3713 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3714} 4537}
3715 4538
3716void noinline 4539ecb_noinline
4540void
3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3718{ 4542{
3719 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
3720 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
3721 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
3722} 4546}
… …
3726# define SA_RESTART 0 4550# define SA_RESTART 0
3727#endif 4551#endif
3728 4552
3729#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
3730 4554
3731void noinline 4555ecb_noinline
4556void
3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3733{ 4558{
3734 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
3735 return; 4560 return;
3736 4561
3737 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));
3738 4563
3739#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
… …
3808 } 4633 }
3809 4634
3810 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3811} 4636}
3812 4637
3813void noinline 4638ecb_noinline
4639void
3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3815{ 4641{
3816 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
3817 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
3818 return; 4644 return;
3819 4645
3820 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3821 4647
3822 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3850#endif 4676#endif
3851 4677
3852#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
3853 4679
3854void 4680void
3855ev_child_start (EV_P_ ev_child *w) EV_THROW 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3856{ 4682{
3857#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
3858 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));
3859#endif 4685#endif
3860 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
3861 return; 4687 return;
3862 4688
3863 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
3864 4690
3865 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
3867 4693
3868 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3869} 4695}
3870 4696
3871void 4697void
3872ev_child_stop (EV_P_ ev_child *w) EV_THROW 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3873{ 4699{
3874 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
3875 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
3876 return; 4702 return;
3877 4703
3878 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
3879 4705
3880 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3894 4720
3895#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
3896#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3897#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
3898 4724
3899static 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);
3900 4726
3901#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
3902 4728
3903/* 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 */
3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3905 4731
3906static void noinline 4732ecb_noinline
4733static void
3907infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
3908{ 4735{
3909 w->wd = inotify_add_watch (fs_fd, w->path, 4736 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
3975 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3976 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
3977 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3978} 4805}
3979 4806
3980static void noinline 4807ecb_noinline
4808static void
3981infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
3982{ 4810{
3983 int slot; 4811 int slot;
3984 int wd = w->wd; 4812 int wd = w->wd;
3985 4813
… …
3992 4820
3993 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
3994 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
3995} 4823}
3996 4824
3997static void noinline 4825ecb_noinline
4826static void
3998infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3999{ 4828{
4000 if (slot < 0) 4829 if (slot < 0)
4001 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
4002 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4038 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4039 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
4040 } 4869 }
4041} 4870}
4042 4871
4043inline_size void ecb_cold 4872inline_size ecb_cold
4873void
4044ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
4045{ 4875{
4046 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
4047 * 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
4048 */ 4878 */
… …
4138#else 4968#else
4139# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
4140#endif 4970#endif
4141 4971
4142void 4972void
4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4144{ 4974{
4145 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
4146 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
4147 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
4148 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
4149} 4979}
4150 4980
4151static void noinline 4981ecb_noinline
4982static void
4152stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4153{ 4984{
4154 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4155 4986
4156 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
4187 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
4188 } 5019 }
4189} 5020}
4190 5021
4191void 5022void
4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4193{ 5024{
4194 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
4195 return; 5026 return;
4196 5027
4197 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
4198 5029
4199 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4218 5049
4219 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4220} 5051}
4221 5052
4222void 5053void
4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4224{ 5055{
4225 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
4226 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
4227 return; 5058 return;
4228 5059
4229 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
4230 5061
4231#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
4244} 5075}
4245#endif 5076#endif
4246 5077
4247#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
4248void 5079void
4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4250{ 5081{
4251 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
4252 return; 5083 return;
4253 5084
4254 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
4255 5086
4256 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
4259 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
4260 5091
4261 ++idleall; 5092 ++idleall;
4262 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
4263 5094
4264 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);
4265 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
4266 } 5097 }
4267 5098
4268 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
4269} 5100}
4270 5101
4271void 5102void
4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4273{ 5104{
4274 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
4275 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
4276 return; 5107 return;
4277 5108
4278 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
4279 5110
4280 { 5111 {
… …
4291} 5122}
4292#endif 5123#endif
4293 5124
4294#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
4295void 5126void
4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4297{ 5128{
4298 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
4299 return; 5130 return;
4300 5131
4301 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
4302 5133
4303 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
4304 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4305 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
4306 5137
4307 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4308} 5139}
4309 5140
4310void 5141void
4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4312{ 5143{
4313 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4314 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4315 return; 5146 return;
4316 5147
4317 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4318 5149
4319 { 5150 {
… …
4329} 5160}
4330#endif 5161#endif
4331 5162
4332#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4333void 5164void
4334ev_check_start (EV_P_ ev_check *w) EV_THROW 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4335{ 5166{
4336 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4337 return; 5168 return;
4338 5169
4339 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4340 5171
4341 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4342 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4343 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4344 5175
4345 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4346} 5177}
4347 5178
4348void 5179void
4349ev_check_stop (EV_P_ ev_check *w) EV_THROW 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4350{ 5181{
4351 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4352 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4353 return; 5184 return;
4354 5185
4355 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4356 5187
4357 { 5188 {
… …
4366 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4367} 5198}
4368#endif 5199#endif
4369 5200
4370#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4371void noinline 5202ecb_noinline
5203void
4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4373{ 5205{
4374 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4375} 5207}
4376 5208
4377static void 5209static void
… …
4399 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4400 } 5232 }
4401 } 5233 }
4402} 5234}
4403 5235
5236#if EV_FORK_ENABLE
4404static void 5237static void
4405embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4406{ 5239{
4407 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));
4408 5241
… …
4415 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4416 } 5249 }
4417 5250
4418 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4419} 5252}
5253#endif
4420 5254
4421#if 0 5255#if 0
4422static void 5256static void
4423embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4424{ 5258{
4425 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4426} 5260}
4427#endif 5261#endif
4428 5262
4429void 5263void
4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4431{ 5265{
4432 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4433 return; 5267 return;
4434 5268
4435 { 5269 {
4436 EV_P = w->other; 5270 EV_P = w->other;
4437 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 ()));
… …
4445 5279
4446 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4447 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4448 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4449 5283
5284#if EV_FORK_ENABLE
4450 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4451 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4452 5288
4453 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4454 5290
4455 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4456 5292
4457 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4458} 5294}
4459 5295
4460void 5296void
4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4462{ 5298{
4463 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4464 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4465 return; 5301 return;
4466 5302
4467 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4468 5304
4469 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4470 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4471 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4472 5310
4473 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4474 5312
4475 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4476} 5314}
4477#endif 5315#endif
4478 5316
4479#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4480void 5318void
4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4482{ 5320{
4483 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4484 return; 5322 return;
4485 5323
4486 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4487 5325
4488 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4489 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4490 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4491 5329
4492 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4493} 5331}
4494 5332
4495void 5333void
4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4497{ 5335{
4498 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4499 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4500 return; 5338 return;
4501 5339
4502 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4503 5341
4504 { 5342 {
… …
4514} 5352}
4515#endif 5353#endif
4516 5354
4517#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4518void 5356void
4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4520{ 5358{
4521 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4522 return; 5360 return;
4523 5361
4524 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4525 5363
4526 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4527 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4528 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4529 5367
4530 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4531 ev_unref (EV_A); 5369 ev_unref (EV_A);
4532 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4533} 5371}
4534 5372
4535void 5373void
4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4537{ 5375{
4538 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4539 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4540 return; 5378 return;
4541 5379
4542 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4543 ev_ref (EV_A); 5381 ev_ref (EV_A);
4544 5382
… …
4555} 5393}
4556#endif 5394#endif
4557 5395
4558#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4559void 5397void
4560ev_async_start (EV_P_ ev_async *w) EV_THROW 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4561{ 5399{
4562 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4563 return; 5401 return;
4564 5402
4565 w->sent = 0; 5403 w->sent = 0;
4566 5404
4567 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4568 5406
4569 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4570 5408
4571 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4572 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4573 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4574 5412
4575 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4576} 5414}
4577 5415
4578void 5416void
4579ev_async_stop (EV_P_ ev_async *w) EV_THROW 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4580{ 5418{
4581 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4582 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4583 return; 5421 return;
4584 5422
4585 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4586 5424
4587 { 5425 {
… …
4595 5433
4596 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4597} 5435}
4598 5436
4599void 5437void
4600ev_async_send (EV_P_ ev_async *w) EV_THROW 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4601{ 5439{
4602 w->sent = 1; 5440 w->sent = 1;
4603 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4604} 5442}
4605#endif 5443#endif
… …
4642 5480
4643 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));
4644} 5482}
4645 5483
4646void 5484void
4647ev_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
4648{ 5486{
4649 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));
4650
4651 if (expect_false (!once))
4652 {
4653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4654 return;
4655 }
4656 5488
4657 once->cb = cb; 5489 once->cb = cb;
4658 once->arg = arg; 5490 once->arg = arg;
4659 5491
4660 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4673} 5505}
4674 5506
4675/*****************************************************************************/ 5507/*****************************************************************************/
4676 5508
4677#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4678void ecb_cold 5510ecb_cold
5511void
4679ev_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
4680{ 5513{
4681 int i, j; 5514 int i, j;
4682 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4683 5516
4684 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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