ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.466 by root, Tue Mar 25 19:26:42 2014 UTC vs.
Revision 1.520 by root, Sat Dec 28 07:44:15 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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
… …
256# else 285# else
257# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
258# endif 287# endif
259#endif 288#endif
260 289
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
296# endif
297#endif
298
261#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
263# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
264# else 302# else
265# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
… …
304 342
305#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
306# define EV_USE_PORT 0 344# define EV_USE_PORT 0
307#endif 345#endif
308 346
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
309#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
311# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
312# else 366# else
313# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
336# else 390# else
337# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
338# endif 392# endif
339#endif 393#endif
340 394
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
341#if 0 /* debugging */ 403#if 0 /* debugging */
342# define EV_VERIFY 3 404# define EV_VERIFY 3
343# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
344# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
345#endif 407#endif
… …
354 416
355#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif 419#endif
358 420
359#ifdef ANDROID 421#ifdef __ANDROID__
360/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT 423# undef EV_USE_SELECT
362# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
363/* 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 */
364# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
378# include <sys/syscall.h> 440# include <sys/syscall.h>
379# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
381# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
382# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
383# else 446# else
384# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
385# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
386# endif 449# endif
387#endif 450#endif
… …
401#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
402# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
403# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
404#endif 467#endif
405 468
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
406#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
407/* 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 */
408# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
409# 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
410# endif 506# endif
411#endif 507#endif
412 508
413#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
414# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
419# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
420# endif 516# endif
421#endif 517#endif
422 518
423#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
424/* 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 */
425# include <stdint.h> 521# include <stdint.h>
426# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
427# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
428# endif 524# endif
429# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
435# endif 531# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif 533#endif
438 534
439#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
440/* 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 */
441# include <stdint.h> 537# include <stdint.h>
442# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
444# endif 540# endif
445# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
447# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
448# else 544# else
449# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
450# endif 546# endif
451# endif 547# endif
452EV_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);
453 549
454struct signalfd_siginfo 550struct signalfd_siginfo
455{ 551{
456 uint32_t ssi_signo; 552 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
458}; 554};
459#endif 555#endif
460 556
461/**/ 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/*****************************************************************************/
462 568
463#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
464# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
465#else 571#else
466# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
471 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
472 */ 578 */
473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
475 581
476#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) */
477#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) */
478 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 598# 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_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
481 602
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
484/* 605/*
485 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
486 * 607 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved. 610 * All rights reserved.
490 * 611 *
491 * Redistribution and use in source and binary forms, with or without modifica- 612 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE. 631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
511 */ 643 */
512 644
513#ifndef ECB_H 645#ifndef ECB_H
514#define ECB_H 646#define ECB_H
515 647
516/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003 649#define ECB_VERSION 0x00010006
518 650
519#ifdef _WIN32 651#ifdef _WIN32
520 typedef signed char int8_t; 652 typedef signed char int8_t;
521 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
522 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
539 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
541 #endif 673 #endif
542#else 674#else
543 #include <inttypes.h> 675 #include <inttypes.h>
544 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
545 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
546 #else 678 #else
547 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
548 #endif 680 #endif
549#endif 681#endif
550 682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
551/* work around x32 idiocy by defining proper macros */ 686/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64 687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
553 #if _ILP32 688 #if _ILP32
554 #define ECB_AMD64_X32 1 689 #define ECB_AMD64_X32 1
555 #else 690 #else
556 #define ECB_AMD64 1 691 #define ECB_AMD64 1
557 #endif 692 #endif
… …
562 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so. 698 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have 699 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place. 700 * an issue with that they should have done it right in the first place.
566 */ 701 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
570 #else 704#else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif 706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
573#endif 720#endif
574 721
575#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
576#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
577 726
578#if ECB_CPP 727#if ECB_CPP
579 #define ECB_C 0 728 #define ECB_C 0
580 #define ECB_STDC_VERSION 0 729 #define ECB_STDC_VERSION 0
581#else 730#else
… …
583 #define ECB_STDC_VERSION __STDC_VERSION__ 732 #define ECB_STDC_VERSION __STDC_VERSION__
584#endif 733#endif
585 734
586#define ECB_C99 (ECB_STDC_VERSION >= 199901L) 735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
587#define ECB_C11 (ECB_STDC_VERSION >= 201112L) 736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
588 738
589#if ECB_CPP 739#if ECB_CPP
590 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
591 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
592 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
607 757
608#if ECB_NO_SMP 758#if ECB_NO_SMP
609 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
610#endif 760#endif
611 761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
612#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
613 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
614 #if __i386 || __i386__ 774 #if __i386 || __i386__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
616 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
617 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
618 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
619 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
620 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
621 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
622 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
624 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
625 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
627 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
628 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
629 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
630 #elif __aarch64__ 798 #elif __aarch64__
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") 799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
632 #elif (__sparc || __sparc__) && !__sparcv8 800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
634 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
635 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
636 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
… …
660 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
661 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
662 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
663 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) 831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
664 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) 832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
665 834
666 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 835 #elif ECB_CLANG_EXTENSION(c_atomic)
667 * without risking compile time errors with other compilers. We *could*
668 * define our own ecb_clang_has_feature, but I just can't be bothered to work
669 * around this shit time and again.
670 * #elif defined __clang && __has_feature (cxx_atomic)
671 * // see comment below (stdatomic.h) about the C11 memory model. 836 /* see comment below (stdatomic.h) about the C11 memory model. */
672 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
673 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
674 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) 839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
675 */ 840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
676 841
677 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
678 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
679 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
680 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ 845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
… …
690 #elif defined _WIN32 855 #elif defined _WIN32
691 #include <WinNT.h> 856 #include <WinNT.h>
692 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
693 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
694 #include <mbarrier.h> 859 #include <mbarrier.h>
695 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
696 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
697 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
698 #elif __xlC__ 864 #elif __xlC__
699 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
700 #endif 866 #endif
701#endif 867#endif
702 868
703#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
704 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
705 /* we assume that these memory fences work on all variables/all memory accesses, */ 871 /* we assume that these memory fences work on all variables/all memory accesses, */
706 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
707 #include <stdatomic.h> 873 #include <stdatomic.h>
708 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
709 /* any fence other than seq_cst, which isn't very efficient for us. */
710 /* Why that is, we don't know - either the C11 memory model is quite useless */
711 /* for most usages, or gcc and clang have a bug */
712 /* I *currently* lean towards the latter, and inefficiently implement */
713 /* all three of ecb's fences as a seq_cst fence */
714 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
715 /* for all __atomic_thread_fence's except seq_cst */
716 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
717 #endif 877 #endif
718#endif 878#endif
719 879
720#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
721 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
741 901
742#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
743 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
744#endif 904#endif
745 905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
746/*****************************************************************************/ 910/*****************************************************************************/
747 911
748#if __cplusplus 912#if ECB_CPP
749 #define ecb_inline static inline 913 #define ecb_inline static inline
750#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
751 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
752#elif ECB_C99 916#elif ECB_C99
753 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
767 931
768#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
769#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
770#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
771#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
772 937
773#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
774 939
775#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
776 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
777 #define ecb_is_constant(expr) __builtin_constant_p (expr)
778 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
779 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
780#else 942#else
781 #define ecb_attribute(attrlist) 943 #define ecb_attribute(attrlist)
944#endif
782 945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
783 /* possible C11 impl for integral types 949 /* possible C11 impl for integral types
784 typedef struct ecb_is_constant_struct ecb_is_constant_struct; 950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
785 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ 951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
786 952
787 #define ecb_is_constant(expr) 0 953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
788 #define ecb_expect(expr,value) (expr) 959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
789 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
790#endif 966#endif
791 967
792/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
793#if ECB_GCC_VERSION(4,5) 969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
794 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
795#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
796 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
797#endif 975#endif
798 976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
799#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
800#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
801#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
802#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
803 1000
804#if ECB_C11 1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
805 #define ecb_noreturn _Noreturn 1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
806#else 1009#else
807 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
808#endif 1011#endif
809 1012
810#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
… …
825/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
826#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
827#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
828 1031
829/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
830#if ECB_GCC_VERSION(3,4) 1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
831 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
832 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
833 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
834 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
835 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
836 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
837 /* no popcountll */ 1043 /* no popcountll */
838#else 1044#else
839 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
840 ecb_function_ int 1046 ecb_function_ ecb_const int
841 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
842 { 1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
843 int r = 0; 1054 int r = 0;
844 1055
845 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
846 1057
847#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
857 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
858 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
859#endif 1070#endif
860 1071
861 return r; 1072 return r;
1073#endif
862 } 1074 }
863 1075
864 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
865 ecb_function_ int 1077 ecb_function_ ecb_const int
866 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
867 { 1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
868 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
869 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
870 } 1088 }
871 1089
872 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
873 ecb_function_ int 1091 ecb_function_ ecb_const int
874 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
875 { 1093 {
876 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
877 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
878 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
879 x *= 0x01010101; 1097 x *= 0x01010101;
880 1098
881 return x >> 24; 1099 return x >> 24;
882 } 1100 }
883 1101
884 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
885 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
886 { 1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
887 int r = 0; 1110 int r = 0;
888 1111
889 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
890 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
891 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
892 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
893 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
894 1117
895 return r; 1118 return r;
1119#endif
896 } 1120 }
897 1121
898 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
899 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
900 { 1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
901 int r = 0; 1130 int r = 0;
902 1131
903 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
904 1133
905 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
906 } 1136 }
907#endif 1137#endif
908 1138
909ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
910ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } 1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
911ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
912ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } 1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
913 1143
914ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
915ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
916{ 1146{
917 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
918 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
919} 1149}
920 1150
921ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
922ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
923{ 1153{
924 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
925 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
926 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
927 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
928 1158
929 return x; 1159 return x;
930} 1160}
931 1161
932ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
933ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
934{ 1164{
935 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
936 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
937 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
938 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
941 return x; 1171 return x;
942} 1172}
943 1173
944/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
945/* so for this version we are lazy */ 1175/* so for this version we are lazy */
946ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
947ecb_function_ int 1177ecb_function_ ecb_const int
948ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
949{ 1179{
950 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
951} 1181}
952 1182
953ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
954ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
955ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
956ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
957ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
958ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
959ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
960ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
961 1191
962ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
963ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
964ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
965ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
966ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
967ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
968ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
969ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
970 1200
971#if ECB_GCC_VERSION(4,3) 1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
972 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
973 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
974 #define ecb_bswap64(x) __builtin_bswap64 (x) 1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
975#else 1214#else
976 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
977 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
978 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
979 { 1218 {
980 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
981 } 1220 }
982 1221
983 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
984 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
985 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
986 { 1225 {
987 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
988 } 1227 }
989 1228
990 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
991 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
992 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
993 { 1232 {
994 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
995 } 1234 }
996#endif 1235#endif
997 1236
998#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
999 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
1000#else 1239#else
1001 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1002 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1003 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1004#endif 1243#endif
1005 1244
1006/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
1007#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1008 1247
1009ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1010ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
1011ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
1012{ 1251{
1013 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
1014 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
1015 /* successfully return a constant. */ 1254 /* successfully return a constant. */
1016 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
1017 /* is to avoid it in all cases, at least on common architectures */ 1256 /* is to avoid it in all cases, at least on common architectures */
1018 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
1019#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1020 return 0x44;
1021#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ 1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1022 return 0x44; 1261 return 0x44332211;
1023#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1024 return 0x11; 1265 return 0x11223344;
1025#else 1266#else
1026 union 1267 union
1027 { 1268 {
1269 uint8_t c[4];
1028 uint32_t i; 1270 uint32_t u;
1029 uint8_t c;
1030 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1031 return u.c; 1272 return u.u;
1032#endif 1273#endif
1033} 1274}
1034 1275
1035ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1036ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1037ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1038ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1039 1280
1040#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1041 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1042#else 1283#else
1043 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1044#endif 1285#endif
1045 1286
1046#if __cplusplus 1287#if ECB_CPP
1047 template<typename T> 1288 template<typename T>
1048 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
1049 { 1290 {
1050 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1051 } 1292 }
… …
1068 } 1309 }
1069#else 1310#else
1070 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1071#endif 1312#endif
1072 1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1073/*******************************************************************************/ 1410/*******************************************************************************/
1074/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1075 1412
1076/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1077/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1078#if 0 \ 1415#if 0 \
1079 || __i386 || __i386__ \ 1416 || __i386 || __i386__ \
1080 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1417 || ECB_GCC_AMD64 \
1081 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1082 || defined __s390__ || defined __s390x__ \ 1419 || defined __s390__ || defined __s390x__ \
1083 || defined __mips__ \ 1420 || defined __mips__ \
1084 || defined __alpha__ \ 1421 || defined __alpha__ \
1085 || defined __hppa__ \ 1422 || defined __hppa__ \
1086 || defined __ia64__ \ 1423 || defined __ia64__ \
1087 || defined __m68k__ \ 1424 || defined __m68k__ \
1088 || defined __m88k__ \ 1425 || defined __m88k__ \
1089 || defined __sh__ \ 1426 || defined __sh__ \
1090 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ 1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1091 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ 1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1092 || defined __aarch64__ 1429 || defined __aarch64__
1093 #define ECB_STDFP 1 1430 #define ECB_STDFP 1
1094 #include <string.h> /* for memcpy */ 1431 #include <string.h> /* for memcpy */
1095#else 1432#else
… …
1111 #define ECB_NAN NAN 1448 #define ECB_NAN NAN
1112 #else 1449 #else
1113 #define ECB_NAN ECB_INFINITY 1450 #define ECB_NAN ECB_INFINITY
1114 #endif 1451 #endif
1115 1452
1116 /* converts an ieee half/binary16 to a float */ 1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1117 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; 1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1118 ecb_function_ float 1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1119 ecb_binary16_to_float (uint16_t x) 1456 #else
1120 { 1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1121 int e = (x >> 10) & 0x1f; 1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1122 int m = x & 0x3ff; 1459 #endif
1123 float r;
1124
1125 if (!e ) r = ldexpf (m , -24);
1126 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1127 else if (m ) r = ECB_NAN;
1128 else r = ECB_INFINITY;
1129
1130 return x & 0x8000 ? -r : r;
1131 }
1132 1460
1133 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1134 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; 1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1135 ecb_function_ uint32_t 1463 ecb_function_ ecb_const uint32_t
1136 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1137 { 1465 {
1138 uint32_t r; 1466 uint32_t r;
1139 1467
1140 #if ECB_STDFP 1468 #if ECB_STDFP
… …
1147 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1148 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1149 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1150 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1151 1479
1152 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1153 1481
1154 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1155 1483
1156 if (r) 1484 if (r)
1157 m = -m; 1485 m = -m;
… …
1169 1497
1170 return r; 1498 return r;
1171 } 1499 }
1172 1500
1173 /* converts an ieee single/binary32 to a float */ 1501 /* converts an ieee single/binary32 to a float */
1174 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; 1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1175 ecb_function_ float 1503 ecb_function_ ecb_const float
1176 ecb_binary32_to_float (uint32_t x) 1504 ecb_binary32_to_float (uint32_t x)
1177 { 1505 {
1178 float r; 1506 float r;
1179 1507
1180 #if ECB_STDFP 1508 #if ECB_STDFP
… …
1190 x |= 0x800000U; 1518 x |= 0x800000U;
1191 else 1519 else
1192 e = 1; 1520 e = 1;
1193 1521
1194 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ 1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1195 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1196 1524
1197 r = neg ? -r : r; 1525 r = neg ? -r : r;
1198 #endif 1526 #endif
1199 1527
1200 return r; 1528 return r;
1201 } 1529 }
1202 1530
1203 /* convert a double to ieee double/binary64 */ 1531 /* convert a double to ieee double/binary64 */
1204 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; 1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1205 ecb_function_ uint64_t 1533 ecb_function_ ecb_const uint64_t
1206 ecb_double_to_binary64 (double x) 1534 ecb_double_to_binary64 (double x)
1207 { 1535 {
1208 uint64_t r; 1536 uint64_t r;
1209 1537
1210 #if ECB_STDFP 1538 #if ECB_STDFP
… …
1239 1567
1240 return r; 1568 return r;
1241 } 1569 }
1242 1570
1243 /* converts an ieee double/binary64 to a double */ 1571 /* converts an ieee double/binary64 to a double */
1244 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; 1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1245 ecb_function_ double 1573 ecb_function_ ecb_const double
1246 ecb_binary64_to_double (uint64_t x) 1574 ecb_binary64_to_double (uint64_t x)
1247 { 1575 {
1248 double r; 1576 double r;
1249 1577
1250 #if ECB_STDFP 1578 #if ECB_STDFP
… …
1268 #endif 1596 #endif
1269 1597
1270 return r; 1598 return r;
1271 } 1599 }
1272 1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1273#endif 1617#endif
1274 1618
1275#endif 1619#endif
1276 1620
1277/* ECB.H END */ 1621/* ECB.H END */
1278 1622
1279#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1280/* if your architecture doesn't need memory fences, e.g. because it is 1624/* if your architecture doesn't need memory fences, e.g. because it is
1281 * single-cpu/core, or if you use libev in a project that doesn't use libev 1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1282 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1283 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1284 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1285 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1286 */ 1630 */
1287# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1291# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1292# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1293# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1294#endif 1638#endif
1295 1639
1296#define expect_false(cond) ecb_expect_false (cond)
1297#define expect_true(cond) ecb_expect_true (cond)
1298#define noinline ecb_noinline
1299
1300#define inline_size ecb_inline 1640#define inline_size ecb_inline
1301 1641
1302#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1303# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1304#else 1644#else
1305# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1306#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
1307 1713
1308#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1309 1715
1310#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1311# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1312#else 1718#else
1313# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1314#endif 1720#endif
1315 1721
1316#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1317#define EMPTY2(a,b) /* used to suppress some warnings */
1318 1723
1319typedef ev_watcher *W; 1724typedef ev_watcher *W;
1320typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1321typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1322 1727
… …
1347# include "ev_win32.c" 1752# include "ev_win32.c"
1348#endif 1753#endif
1349 1754
1350/*****************************************************************************/ 1755/*****************************************************************************/
1351 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1352/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1353 1762
1354#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1355# include <math.h> 1764# include <math.h>
1356# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1357#else 1766#else
1358 1767
1359#include <float.h> 1768#include <float.h>
1360 1769
1361/* a floor() replacement function, should be independent of ev_tstamp type */ 1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1362static ev_tstamp noinline 1772static ev_tstamp
1363ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1364{ 1774{
1365 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1366#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1367 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1368#else 1778#else
1369 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1370#endif 1780#endif
1371 1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1372 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1373 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1374 { 1792 {
1375 ev_tstamp f; 1793 ev_tstamp f;
1376 1794
1377 if (v == v - 1.) 1795 if (v == v - 1.)
1378 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1379 1797
1380 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1381 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1382 } 1800 }
1383 1801
1384 /* special treatment for negative args? */
1385 if (expect_false (v < 0.))
1386 {
1387 ev_tstamp f = -ev_floor (-v);
1388
1389 return f - (f == v ? 0 : 1);
1390 }
1391
1392 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1393 return (unsigned long)v; 1803 return (unsigned long)v;
1394} 1804}
1395 1805
1396#endif 1806#endif
… …
1399 1809
1400#ifdef __linux 1810#ifdef __linux
1401# include <sys/utsname.h> 1811# include <sys/utsname.h>
1402#endif 1812#endif
1403 1813
1404static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1405ev_linux_version (void) 1816ev_linux_version (void)
1406{ 1817{
1407#ifdef __linux 1818#ifdef __linux
1408 unsigned int v = 0; 1819 unsigned int v = 0;
1409 struct utsname buf; 1820 struct utsname buf;
… …
1438} 1849}
1439 1850
1440/*****************************************************************************/ 1851/*****************************************************************************/
1441 1852
1442#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1443static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1444ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1445{ 1857{
1446 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1447} 1859}
1448#endif 1860#endif
1449 1861
1450static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1451 1863
1452void ecb_cold 1864ecb_cold
1865void
1453ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1454{ 1867{
1455 syserr_cb = cb; 1868 syserr_cb = cb;
1456} 1869}
1457 1870
1458static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1459ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1460{ 1874{
1461 if (!msg) 1875 if (!msg)
1462 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1463 1877
… …
1476 abort (); 1890 abort ();
1477 } 1891 }
1478} 1892}
1479 1893
1480static void * 1894static void *
1481ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1482{ 1896{
1483 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1484 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
1485 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1486 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1492 1906
1493 free (ptr); 1907 free (ptr);
1494 return 0; 1908 return 0;
1495} 1909}
1496 1910
1497static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1498 1912
1499void ecb_cold 1913ecb_cold
1914void
1500ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1501{ 1916{
1502 alloc = cb; 1917 alloc = cb;
1503} 1918}
1504 1919
1505inline_speed void * 1920inline_speed void *
… …
1532typedef struct 1947typedef struct
1533{ 1948{
1534 WL head; 1949 WL head;
1535 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1536 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1537 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
1538 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1539#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1540 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1541#endif 1956#endif
1542#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1543 SOCKET handle; 1958 SOCKET handle;
… …
1597 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1598 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1599 2014
1600#else 2015#else
1601 2016
1602 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1603 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1604 #include "ev_vars.h" 2019 #include "ev_vars.h"
1605 #undef VAR 2020 #undef VAR
1606 2021
1607 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1608 2023
1609#endif 2024#endif
1610 2025
1611#if EV_FEATURE_API 2026#if EV_FEATURE_API
1612# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1613# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1614# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1615#else 2030#else
1616# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1617# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1618# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1622 2037
1623/*****************************************************************************/ 2038/*****************************************************************************/
1624 2039
1625#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1626ev_tstamp 2041ev_tstamp
1627ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1628{ 2043{
1629#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1630 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1631 { 2046 {
1632 struct timespec ts; 2047 struct timespec ts;
1633 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1634 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1635 } 2050 }
1636#endif 2051#endif
1637 2052
2053 {
1638 struct timeval tv; 2054 struct timeval tv;
1639 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1640 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1641} 2058}
1642#endif 2059#endif
1643 2060
1644inline_size ev_tstamp 2061inline_size ev_tstamp
1645get_clock (void) 2062get_clock (void)
1646{ 2063{
1647#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1648 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1649 { 2066 {
1650 struct timespec ts; 2067 struct timespec ts;
1651 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1652 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1653 } 2070 }
1654#endif 2071#endif
1655 2072
1656 return ev_time (); 2073 return ev_time ();
1657} 2074}
1658 2075
1659#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1660ev_tstamp 2077ev_tstamp
1661ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1662{ 2079{
1663 return ev_rt_now; 2080 return ev_rt_now;
1664} 2081}
1665#endif 2082#endif
1666 2083
1667void 2084void
1668ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1669{ 2086{
1670 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1671 { 2088 {
1672#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1673 struct timespec ts; 2090 struct timespec ts;
1674 2091
1675 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1676 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1677#elif defined _WIN32 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
1678 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1679#else 2098#else
1680 struct timeval tv; 2099 struct timeval tv;
1681 2100
1682 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1683 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1713 } 2132 }
1714 2133
1715 return ncur; 2134 return ncur;
1716} 2135}
1717 2136
1718static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1719array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1720{ 2140{
1721 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1722 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1723} 2143}
1724 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1725#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1726 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1727 2149
1728#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1729 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1730 { \ 2152 { \
1731 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1732 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1733 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1734 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1735 } 2157 }
1736 2158
1737#if 0 2159#if 0
1738#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1739 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1748 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1749 2171
1750/*****************************************************************************/ 2172/*****************************************************************************/
1751 2173
1752/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1753static void noinline 2175ecb_noinline
2176static void
1754pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1755{ 2178{
1756} 2179}
1757 2180
1758void noinline 2181ecb_noinline
2182void
1759ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1760{ 2184{
1761 W w_ = (W)w; 2185 W w_ = (W)w;
1762 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1763 2187
1764 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1765 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1766 else 2190 else
1767 { 2191 {
1768 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1769 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1770 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1771 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1772 } 2196 }
1773 2197
1774 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1775} 2199}
1776 2200
1777inline_speed void 2201inline_speed void
1778feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1779{ 2203{
1780 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1781 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1782} 2206}
1783 2207
1784inline_size void 2208inline_size void
1785feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1820inline_speed void 2244inline_speed void
1821fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1822{ 2246{
1823 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1824 2248
1825 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1826 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1827} 2251}
1828 2252
1829void 2253void
1830ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1831{ 2255{
1832 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1833 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1834} 2258}
1835 2259
… …
1838inline_size void 2262inline_size void
1839fd_reify (EV_P) 2263fd_reify (EV_P)
1840{ 2264{
1841 int i; 2265 int i;
1842 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
1843#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1844 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
1845 { 2281 {
1846 int fd = fdchanges [i]; 2282 int fd = fdchanges [i];
1847 ANFD *anfd = anfds + fd; 2283 ANFD *anfd = anfds + fd;
1848 2284
1849 if (anfd->reify & EV__IOFDSET && anfd->head) 2285 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1863 } 2299 }
1864 } 2300 }
1865 } 2301 }
1866#endif 2302#endif
1867 2303
1868 for (i = 0; i < fdchangecnt; ++i) 2304 for (i = 0; i < changecnt; ++i)
1869 { 2305 {
1870 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
1871 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
1872 ev_io *w; 2308 ev_io *w;
1873 2309
1874 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
1875 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
1876 2312
1877 anfd->reify = 0; 2313 anfd->reify = 0;
1878 2314
1879 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1880 { 2316 {
1881 anfd->events = 0; 2317 anfd->events = 0;
1882 2318
1883 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1884 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
… …
1889 2325
1890 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
1891 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
1892 } 2328 }
1893 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
1894 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
1895} 2338}
1896 2339
1897/* something about the given fd changed */ 2340/* something about the given fd changed */
1898inline_size void 2341inline_size
2342void
1899fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
1900{ 2344{
1901 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
1902 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
1903 2347
1904 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
1905 { 2349 {
1906 ++fdchangecnt; 2350 ++fdchangecnt;
1907 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1908 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
1909 } 2353 }
1910} 2354}
1911 2355
1912/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1913inline_speed void ecb_cold 2357inline_speed ecb_cold void
1914fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
1915{ 2359{
1916 ev_io *w; 2360 ev_io *w;
1917 2361
1918 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1921 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1922 } 2366 }
1923} 2367}
1924 2368
1925/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1926inline_size int ecb_cold 2370inline_size ecb_cold int
1927fd_valid (int fd) 2371fd_valid (int fd)
1928{ 2372{
1929#ifdef _WIN32 2373#ifdef _WIN32
1930 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1931#else 2375#else
1932 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1933#endif 2377#endif
1934} 2378}
1935 2379
1936/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1937static void noinline ecb_cold 2381ecb_noinline ecb_cold
2382static void
1938fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1939{ 2384{
1940 int fd; 2385 int fd;
1941 2386
1942 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1944 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1945 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1946} 2391}
1947 2392
1948/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1949static void noinline ecb_cold 2394ecb_noinline ecb_cold
2395static void
1950fd_enomem (EV_P) 2396fd_enomem (EV_P)
1951{ 2397{
1952 int fd; 2398 int fd;
1953 2399
1954 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1958 break; 2404 break;
1959 } 2405 }
1960} 2406}
1961 2407
1962/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1963static void noinline 2409ecb_noinline
2410static void
1964fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1965{ 2412{
1966 int fd; 2413 int fd;
1967 2414
1968 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
2021 ev_tstamp minat; 2468 ev_tstamp minat;
2022 ANHE *minpos; 2469 ANHE *minpos;
2023 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
2024 2471
2025 /* find minimum child */ 2472 /* find minimum child */
2026 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
2027 { 2474 {
2028 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2029 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2030 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2031 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2032 } 2479 }
2033 else if (pos < E) 2480 else if (pos < E)
2034 { 2481 {
2035 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
2036 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
2037 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
2038 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
2039 } 2486 }
2040 else 2487 else
2041 break; 2488 break;
2042 2489
2043 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
2051 2498
2052 heap [k] = he; 2499 heap [k] = he;
2053 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
2054} 2501}
2055 2502
2056#else /* 4HEAP */ 2503#else /* not 4HEAP */
2057 2504
2058#define HEAP0 1 2505#define HEAP0 1
2059#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
2060#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
2061 2508
… …
2149 2596
2150/*****************************************************************************/ 2597/*****************************************************************************/
2151 2598
2152#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2153 2600
2154static void noinline ecb_cold 2601ecb_noinline ecb_cold
2602static void
2155evpipe_init (EV_P) 2603evpipe_init (EV_P)
2156{ 2604{
2157 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
2158 { 2606 {
2159 int fds [2]; 2607 int fds [2];
… …
2199inline_speed void 2647inline_speed void
2200evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2201{ 2649{
2202 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2203 2651
2204 if (expect_true (*flag)) 2652 if (ecb_expect_true (*flag))
2205 return; 2653 return;
2206 2654
2207 *flag = 1; 2655 *flag = 1;
2208 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2209 2657
… …
2230#endif 2678#endif
2231 { 2679 {
2232#ifdef _WIN32 2680#ifdef _WIN32
2233 WSABUF buf; 2681 WSABUF buf;
2234 DWORD sent; 2682 DWORD sent;
2235 buf.buf = &buf; 2683 buf.buf = (char *)&buf;
2236 buf.len = 1; 2684 buf.len = 1;
2237 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2238#else 2686#else
2239 write (evpipe [1], &(evpipe [1]), 1); 2687 write (evpipe [1], &(evpipe [1]), 1);
2240#endif 2688#endif
… …
2286 sig_pending = 0; 2734 sig_pending = 0;
2287 2735
2288 ECB_MEMORY_FENCE; 2736 ECB_MEMORY_FENCE;
2289 2737
2290 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
2291 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
2292 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
2293 } 2741 }
2294#endif 2742#endif
2295 2743
2296#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
… …
2312} 2760}
2313 2761
2314/*****************************************************************************/ 2762/*****************************************************************************/
2315 2763
2316void 2764void
2317ev_feed_signal (int signum) EV_THROW 2765ev_feed_signal (int signum) EV_NOEXCEPT
2318{ 2766{
2319#if EV_MULTIPLICITY 2767#if EV_MULTIPLICITY
2320 EV_P; 2768 EV_P;
2321 ECB_MEMORY_FENCE_ACQUIRE; 2769 ECB_MEMORY_FENCE_ACQUIRE;
2322 EV_A = signals [signum - 1].loop; 2770 EV_A = signals [signum - 1].loop;
… …
2337#endif 2785#endif
2338 2786
2339 ev_feed_signal (signum); 2787 ev_feed_signal (signum);
2340} 2788}
2341 2789
2342void noinline 2790ecb_noinline
2791void
2343ev_feed_signal_event (EV_P_ int signum) EV_THROW 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2344{ 2793{
2345 WL w; 2794 WL w;
2346 2795
2347 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2348 return; 2797 return;
2349 2798
2350 --signum; 2799 --signum;
2351 2800
2352#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
2353 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
2354 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
2355 2804
2356 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
2357 return; 2806 return;
2358#endif 2807#endif
2359 2808
2360 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2361 ECB_MEMORY_FENCE_RELEASE; 2810 ECB_MEMORY_FENCE_RELEASE;
… …
2445 2894
2446#endif 2895#endif
2447 2896
2448/*****************************************************************************/ 2897/*****************************************************************************/
2449 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2450#if EV_USE_IOCP 2951#if EV_USE_IOCP
2451# include "ev_iocp.c" 2952# include "ev_iocp.c"
2452#endif 2953#endif
2453#if EV_USE_PORT 2954#if EV_USE_PORT
2454# include "ev_port.c" 2955# include "ev_port.c"
… …
2457# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
2458#endif 2959#endif
2459#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
2460# include "ev_epoll.c" 2961# include "ev_epoll.c"
2461#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
2462#if EV_USE_POLL 2969#if EV_USE_POLL
2463# include "ev_poll.c" 2970# include "ev_poll.c"
2464#endif 2971#endif
2465#if EV_USE_SELECT 2972#if EV_USE_SELECT
2466# include "ev_select.c" 2973# include "ev_select.c"
2467#endif 2974#endif
2468 2975
2469int ecb_cold 2976ecb_cold int
2470ev_version_major (void) EV_THROW 2977ev_version_major (void) EV_NOEXCEPT
2471{ 2978{
2472 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
2473} 2980}
2474 2981
2475int ecb_cold 2982ecb_cold int
2476ev_version_minor (void) EV_THROW 2983ev_version_minor (void) EV_NOEXCEPT
2477{ 2984{
2478 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
2479} 2986}
2480 2987
2481/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
2482int inline_size ecb_cold 2989inline_size ecb_cold int
2483enable_secure (void) 2990enable_secure (void)
2484{ 2991{
2485#ifdef _WIN32 2992#ifdef _WIN32
2486 return 0; 2993 return 0;
2487#else 2994#else
2488 return getuid () != geteuid () 2995 return getuid () != geteuid ()
2489 || getgid () != getegid (); 2996 || getgid () != getegid ();
2490#endif 2997#endif
2491} 2998}
2492 2999
2493unsigned int ecb_cold 3000ecb_cold
3001unsigned int
2494ev_supported_backends (void) EV_THROW 3002ev_supported_backends (void) EV_NOEXCEPT
2495{ 3003{
2496 unsigned int flags = 0; 3004 unsigned int flags = 0;
2497 3005
2498 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2499 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2500 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2501 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2502 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2503 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
2504 return flags; 3014 return flags;
2505} 3015}
2506 3016
2507unsigned int ecb_cold 3017ecb_cold
3018unsigned int
2508ev_recommended_backends (void) EV_THROW 3019ev_recommended_backends (void) EV_NOEXCEPT
2509{ 3020{
2510 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
2511 3022
2512#ifndef __NetBSD__ 3023#ifndef __NetBSD__
2513 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
2521#endif 3032#endif
2522#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
2523 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2524#endif 3035#endif
2525 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
2526 return flags; 3046 return flags;
2527} 3047}
2528 3048
2529unsigned int ecb_cold 3049ecb_cold
3050unsigned int
2530ev_embeddable_backends (void) EV_THROW 3051ev_embeddable_backends (void) EV_NOEXCEPT
2531{ 3052{
2532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2533 3054
2534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2535 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2536 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
2537 3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3060
3061 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3062 * because our backend_fd is the epoll fd we need as fallback.
3063 * if the kernel ever is fixed, this might change...
3064 */
3065
2538 return flags; 3066 return flags;
2539} 3067}
2540 3068
2541unsigned int 3069unsigned int
2542ev_backend (EV_P) EV_THROW 3070ev_backend (EV_P) EV_NOEXCEPT
2543{ 3071{
2544 return backend; 3072 return backend;
2545} 3073}
2546 3074
2547#if EV_FEATURE_API 3075#if EV_FEATURE_API
2548unsigned int 3076unsigned int
2549ev_iteration (EV_P) EV_THROW 3077ev_iteration (EV_P) EV_NOEXCEPT
2550{ 3078{
2551 return loop_count; 3079 return loop_count;
2552} 3080}
2553 3081
2554unsigned int 3082unsigned int
2555ev_depth (EV_P) EV_THROW 3083ev_depth (EV_P) EV_NOEXCEPT
2556{ 3084{
2557 return loop_depth; 3085 return loop_depth;
2558} 3086}
2559 3087
2560void 3088void
2561ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3089ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2562{ 3090{
2563 io_blocktime = interval; 3091 io_blocktime = interval;
2564} 3092}
2565 3093
2566void 3094void
2567ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3095ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2568{ 3096{
2569 timeout_blocktime = interval; 3097 timeout_blocktime = interval;
2570} 3098}
2571 3099
2572void 3100void
2573ev_set_userdata (EV_P_ void *data) EV_THROW 3101ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2574{ 3102{
2575 userdata = data; 3103 userdata = data;
2576} 3104}
2577 3105
2578void * 3106void *
2579ev_userdata (EV_P) EV_THROW 3107ev_userdata (EV_P) EV_NOEXCEPT
2580{ 3108{
2581 return userdata; 3109 return userdata;
2582} 3110}
2583 3111
2584void 3112void
2585ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW 3113ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2586{ 3114{
2587 invoke_cb = invoke_pending_cb; 3115 invoke_cb = invoke_pending_cb;
2588} 3116}
2589 3117
2590void 3118void
2591ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW 3119ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2592{ 3120{
2593 release_cb = release; 3121 release_cb = release;
2594 acquire_cb = acquire; 3122 acquire_cb = acquire;
2595} 3123}
2596#endif 3124#endif
2597 3125
2598/* initialise a loop structure, must be zero-initialised */ 3126/* initialise a loop structure, must be zero-initialised */
2599static void noinline ecb_cold 3127ecb_noinline ecb_cold
3128static void
2600loop_init (EV_P_ unsigned int flags) EV_THROW 3129loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2601{ 3130{
2602 if (!backend) 3131 if (!backend)
2603 { 3132 {
2604 origflags = flags; 3133 origflags = flags;
2605 3134
… …
2658 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3187 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2659#endif 3188#endif
2660#if EV_USE_SIGNALFD 3189#if EV_USE_SIGNALFD
2661 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3190 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2662#endif 3191#endif
3192#if EV_USE_TIMERFD
3193 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3194#endif
2663 3195
2664 if (!(flags & EVBACKEND_MASK)) 3196 if (!(flags & EVBACKEND_MASK))
2665 flags |= ev_recommended_backends (); 3197 flags |= ev_recommended_backends ();
2666 3198
2667#if EV_USE_IOCP 3199#if EV_USE_IOCP
2668 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3200 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2669#endif 3201#endif
2670#if EV_USE_PORT 3202#if EV_USE_PORT
2671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3203 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2672#endif 3204#endif
2673#if EV_USE_KQUEUE 3205#if EV_USE_KQUEUE
2674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3206 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3207#endif
3208#if EV_USE_IOURING
3209 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3210#endif
3211#if EV_USE_LINUXAIO
3212 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2675#endif 3213#endif
2676#if EV_USE_EPOLL 3214#if EV_USE_EPOLL
2677 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3215 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2678#endif 3216#endif
2679#if EV_USE_POLL 3217#if EV_USE_POLL
2680 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3218 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2681#endif 3219#endif
2682#if EV_USE_SELECT 3220#if EV_USE_SELECT
2683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3221 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2684#endif 3222#endif
2685 3223
2686 ev_prepare_init (&pending_w, pendingcb); 3224 ev_prepare_init (&pending_w, pendingcb);
2687 3225
2688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2691#endif 3229#endif
2692 } 3230 }
2693} 3231}
2694 3232
2695/* free up a loop structure */ 3233/* free up a loop structure */
2696void ecb_cold 3234ecb_cold
3235void
2697ev_loop_destroy (EV_P) 3236ev_loop_destroy (EV_P)
2698{ 3237{
2699 int i; 3238 int i;
2700 3239
2701#if EV_MULTIPLICITY 3240#if EV_MULTIPLICITY
… …
2704 return; 3243 return;
2705#endif 3244#endif
2706 3245
2707#if EV_CLEANUP_ENABLE 3246#if EV_CLEANUP_ENABLE
2708 /* queue cleanup watchers (and execute them) */ 3247 /* queue cleanup watchers (and execute them) */
2709 if (expect_false (cleanupcnt)) 3248 if (ecb_expect_false (cleanupcnt))
2710 { 3249 {
2711 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3250 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2712 EV_INVOKE_PENDING; 3251 EV_INVOKE_PENDING;
2713 } 3252 }
2714#endif 3253#endif
… …
2733#if EV_USE_SIGNALFD 3272#if EV_USE_SIGNALFD
2734 if (ev_is_active (&sigfd_w)) 3273 if (ev_is_active (&sigfd_w))
2735 close (sigfd); 3274 close (sigfd);
2736#endif 3275#endif
2737 3276
3277#if EV_USE_TIMERFD
3278 if (ev_is_active (&timerfd_w))
3279 close (timerfd);
3280#endif
3281
2738#if EV_USE_INOTIFY 3282#if EV_USE_INOTIFY
2739 if (fs_fd >= 0) 3283 if (fs_fd >= 0)
2740 close (fs_fd); 3284 close (fs_fd);
2741#endif 3285#endif
2742 3286
2743 if (backend_fd >= 0) 3287 if (backend_fd >= 0)
2744 close (backend_fd); 3288 close (backend_fd);
2745 3289
2746#if EV_USE_IOCP 3290#if EV_USE_IOCP
2747 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3291 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2748#endif 3292#endif
2749#if EV_USE_PORT 3293#if EV_USE_PORT
2750 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3294 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2751#endif 3295#endif
2752#if EV_USE_KQUEUE 3296#if EV_USE_KQUEUE
2753 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3297 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3298#endif
3299#if EV_USE_IOURING
3300 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3301#endif
3302#if EV_USE_LINUXAIO
3303 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2754#endif 3304#endif
2755#if EV_USE_EPOLL 3305#if EV_USE_EPOLL
2756 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3306 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2757#endif 3307#endif
2758#if EV_USE_POLL 3308#if EV_USE_POLL
2759 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3309 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2760#endif 3310#endif
2761#if EV_USE_SELECT 3311#if EV_USE_SELECT
2762 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3312 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2763#endif 3313#endif
2764 3314
2765 for (i = NUMPRI; i--; ) 3315 for (i = NUMPRI; i--; )
2766 { 3316 {
2767 array_free (pending, [i]); 3317 array_free (pending, [i]);
… …
2809 3359
2810inline_size void 3360inline_size void
2811loop_fork (EV_P) 3361loop_fork (EV_P)
2812{ 3362{
2813#if EV_USE_PORT 3363#if EV_USE_PORT
2814 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3364 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2815#endif 3365#endif
2816#if EV_USE_KQUEUE 3366#if EV_USE_KQUEUE
2817 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3367 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3368#endif
3369#if EV_USE_IOURING
3370 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3371#endif
3372#if EV_USE_LINUXAIO
3373 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2818#endif 3374#endif
2819#if EV_USE_EPOLL 3375#if EV_USE_EPOLL
2820 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3376 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2821#endif 3377#endif
2822#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2823 infy_fork (EV_A); 3379 infy_fork (EV_A);
2824#endif 3380#endif
2825 3381
3382 if (postfork != 2)
3383 {
3384 #if EV_USE_SIGNALFD
3385 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3386 #endif
3387
3388 #if EV_USE_TIMERFD
3389 if (ev_is_active (&timerfd_w))
3390 {
3391 ev_ref (EV_A);
3392 ev_io_stop (EV_A_ &timerfd_w);
3393
3394 close (timerfd);
3395 timerfd = -2;
3396
3397 evtimerfd_init (EV_A);
3398 /* reschedule periodics, in case we missed something */
3399 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3400 }
3401 #endif
3402
2826#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3403 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2827 if (ev_is_active (&pipe_w)) 3404 if (ev_is_active (&pipe_w))
2828 { 3405 {
2829 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3406 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2830 3407
2831 ev_ref (EV_A); 3408 ev_ref (EV_A);
2832 ev_io_stop (EV_A_ &pipe_w); 3409 ev_io_stop (EV_A_ &pipe_w);
2833 3410
2834 if (evpipe [0] >= 0) 3411 if (evpipe [0] >= 0)
2835 EV_WIN32_CLOSE_FD (evpipe [0]); 3412 EV_WIN32_CLOSE_FD (evpipe [0]);
2836 3413
2837 evpipe_init (EV_A); 3414 evpipe_init (EV_A);
2838 /* iterate over everything, in case we missed something before */ 3415 /* iterate over everything, in case we missed something before */
2839 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3416 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3417 }
3418 #endif
2840 } 3419 }
2841#endif
2842 3420
2843 postfork = 0; 3421 postfork = 0;
2844} 3422}
2845 3423
2846#if EV_MULTIPLICITY 3424#if EV_MULTIPLICITY
2847 3425
3426ecb_cold
2848struct ev_loop * ecb_cold 3427struct ev_loop *
2849ev_loop_new (unsigned int flags) EV_THROW 3428ev_loop_new (unsigned int flags) EV_NOEXCEPT
2850{ 3429{
2851 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2852 3431
2853 memset (EV_A, 0, sizeof (struct ev_loop)); 3432 memset (EV_A, 0, sizeof (struct ev_loop));
2854 loop_init (EV_A_ flags); 3433 loop_init (EV_A_ flags);
… …
2861} 3440}
2862 3441
2863#endif /* multiplicity */ 3442#endif /* multiplicity */
2864 3443
2865#if EV_VERIFY 3444#if EV_VERIFY
2866static void noinline ecb_cold 3445ecb_noinline ecb_cold
3446static void
2867verify_watcher (EV_P_ W w) 3447verify_watcher (EV_P_ W w)
2868{ 3448{
2869 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3449 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2870 3450
2871 if (w->pending) 3451 if (w->pending)
2872 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3452 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2873} 3453}
2874 3454
2875static void noinline ecb_cold 3455ecb_noinline ecb_cold
3456static void
2876verify_heap (EV_P_ ANHE *heap, int N) 3457verify_heap (EV_P_ ANHE *heap, int N)
2877{ 3458{
2878 int i; 3459 int i;
2879 3460
2880 for (i = HEAP0; i < N + HEAP0; ++i) 3461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2885 3466
2886 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2887 } 3468 }
2888} 3469}
2889 3470
2890static void noinline ecb_cold 3471ecb_noinline ecb_cold
3472static void
2891array_verify (EV_P_ W *ws, int cnt) 3473array_verify (EV_P_ W *ws, int cnt)
2892{ 3474{
2893 while (cnt--) 3475 while (cnt--)
2894 { 3476 {
2895 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3477 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2898} 3480}
2899#endif 3481#endif
2900 3482
2901#if EV_FEATURE_API 3483#if EV_FEATURE_API
2902void ecb_cold 3484void ecb_cold
2903ev_verify (EV_P) EV_THROW 3485ev_verify (EV_P) EV_NOEXCEPT
2904{ 3486{
2905#if EV_VERIFY 3487#if EV_VERIFY
2906 int i; 3488 int i;
2907 WL w, w2; 3489 WL w, w2;
2908 3490
… …
2984#endif 3566#endif
2985} 3567}
2986#endif 3568#endif
2987 3569
2988#if EV_MULTIPLICITY 3570#if EV_MULTIPLICITY
3571ecb_cold
2989struct ev_loop * ecb_cold 3572struct ev_loop *
2990#else 3573#else
2991int 3574int
2992#endif 3575#endif
2993ev_default_loop (unsigned int flags) EV_THROW 3576ev_default_loop (unsigned int flags) EV_NOEXCEPT
2994{ 3577{
2995 if (!ev_default_loop_ptr) 3578 if (!ev_default_loop_ptr)
2996 { 3579 {
2997#if EV_MULTIPLICITY 3580#if EV_MULTIPLICITY
2998 EV_P = ev_default_loop_ptr = &default_loop_struct; 3581 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
3017 3600
3018 return ev_default_loop_ptr; 3601 return ev_default_loop_ptr;
3019} 3602}
3020 3603
3021void 3604void
3022ev_loop_fork (EV_P) EV_THROW 3605ev_loop_fork (EV_P) EV_NOEXCEPT
3023{ 3606{
3024 postfork = 1; 3607 postfork = 1;
3025} 3608}
3026 3609
3027/*****************************************************************************/ 3610/*****************************************************************************/
… …
3031{ 3614{
3032 EV_CB_INVOKE ((W)w, revents); 3615 EV_CB_INVOKE ((W)w, revents);
3033} 3616}
3034 3617
3035unsigned int 3618unsigned int
3036ev_pending_count (EV_P) EV_THROW 3619ev_pending_count (EV_P) EV_NOEXCEPT
3037{ 3620{
3038 int pri; 3621 int pri;
3039 unsigned int count = 0; 3622 unsigned int count = 0;
3040 3623
3041 for (pri = NUMPRI; pri--; ) 3624 for (pri = NUMPRI; pri--; )
3042 count += pendingcnt [pri]; 3625 count += pendingcnt [pri];
3043 3626
3044 return count; 3627 return count;
3045} 3628}
3046 3629
3047void noinline 3630ecb_noinline
3631void
3048ev_invoke_pending (EV_P) 3632ev_invoke_pending (EV_P)
3049{ 3633{
3050 pendingpri = NUMPRI; 3634 pendingpri = NUMPRI;
3051 3635
3052 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3636 do
3053 { 3637 {
3054 --pendingpri; 3638 --pendingpri;
3055 3639
3640 /* pendingpri possibly gets modified in the inner loop */
3056 while (pendingcnt [pendingpri]) 3641 while (pendingcnt [pendingpri])
3057 { 3642 {
3058 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3643 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
3059 3644
3060 p->w->pending = 0; 3645 p->w->pending = 0;
3061 EV_CB_INVOKE (p->w, p->events); 3646 EV_CB_INVOKE (p->w, p->events);
3062 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
3063 } 3648 }
3064 } 3649 }
3650 while (pendingpri);
3065} 3651}
3066 3652
3067#if EV_IDLE_ENABLE 3653#if EV_IDLE_ENABLE
3068/* make idle watchers pending. this handles the "call-idle */ 3654/* make idle watchers pending. this handles the "call-idle */
3069/* only when higher priorities are idle" logic */ 3655/* only when higher priorities are idle" logic */
3070inline_size void 3656inline_size void
3071idle_reify (EV_P) 3657idle_reify (EV_P)
3072{ 3658{
3073 if (expect_false (idleall)) 3659 if (ecb_expect_false (idleall))
3074 { 3660 {
3075 int pri; 3661 int pri;
3076 3662
3077 for (pri = NUMPRI; pri--; ) 3663 for (pri = NUMPRI; pri--; )
3078 { 3664 {
… …
3108 { 3694 {
3109 ev_at (w) += w->repeat; 3695 ev_at (w) += w->repeat;
3110 if (ev_at (w) < mn_now) 3696 if (ev_at (w) < mn_now)
3111 ev_at (w) = mn_now; 3697 ev_at (w) = mn_now;
3112 3698
3113 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3699 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3114 3700
3115 ANHE_at_cache (timers [HEAP0]); 3701 ANHE_at_cache (timers [HEAP0]);
3116 downheap (timers, timercnt, HEAP0); 3702 downheap (timers, timercnt, HEAP0);
3117 } 3703 }
3118 else 3704 else
… …
3127 } 3713 }
3128} 3714}
3129 3715
3130#if EV_PERIODIC_ENABLE 3716#if EV_PERIODIC_ENABLE
3131 3717
3132static void noinline 3718ecb_noinline
3719static void
3133periodic_recalc (EV_P_ ev_periodic *w) 3720periodic_recalc (EV_P_ ev_periodic *w)
3134{ 3721{
3135 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3722 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3136 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3723 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3137 3724
… …
3139 while (at <= ev_rt_now) 3726 while (at <= ev_rt_now)
3140 { 3727 {
3141 ev_tstamp nat = at + w->interval; 3728 ev_tstamp nat = at + w->interval;
3142 3729
3143 /* when resolution fails us, we use ev_rt_now */ 3730 /* when resolution fails us, we use ev_rt_now */
3144 if (expect_false (nat == at)) 3731 if (ecb_expect_false (nat == at))
3145 { 3732 {
3146 at = ev_rt_now; 3733 at = ev_rt_now;
3147 break; 3734 break;
3148 } 3735 }
3149 3736
… …
3195 } 3782 }
3196} 3783}
3197 3784
3198/* simply recalculate all periodics */ 3785/* simply recalculate all periodics */
3199/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3786/* TODO: maybe ensure that at least one event happens when jumping forward? */
3200static void noinline ecb_cold 3787ecb_noinline ecb_cold
3788static void
3201periodics_reschedule (EV_P) 3789periodics_reschedule (EV_P)
3202{ 3790{
3203 int i; 3791 int i;
3204 3792
3205 /* adjust periodics after time jump */ 3793 /* adjust periodics after time jump */
… …
3218 reheap (periodics, periodiccnt); 3806 reheap (periodics, periodiccnt);
3219} 3807}
3220#endif 3808#endif
3221 3809
3222/* adjust all timers by a given offset */ 3810/* adjust all timers by a given offset */
3223static void noinline ecb_cold 3811ecb_noinline ecb_cold
3812static void
3224timers_reschedule (EV_P_ ev_tstamp adjust) 3813timers_reschedule (EV_P_ ev_tstamp adjust)
3225{ 3814{
3226 int i; 3815 int i;
3227 3816
3228 for (i = 0; i < timercnt; ++i) 3817 for (i = 0; i < timercnt; ++i)
… …
3237/* also detect if there was a timejump, and act accordingly */ 3826/* also detect if there was a timejump, and act accordingly */
3238inline_speed void 3827inline_speed void
3239time_update (EV_P_ ev_tstamp max_block) 3828time_update (EV_P_ ev_tstamp max_block)
3240{ 3829{
3241#if EV_USE_MONOTONIC 3830#if EV_USE_MONOTONIC
3242 if (expect_true (have_monotonic)) 3831 if (ecb_expect_true (have_monotonic))
3243 { 3832 {
3244 int i; 3833 int i;
3245 ev_tstamp odiff = rtmn_diff; 3834 ev_tstamp odiff = rtmn_diff;
3246 3835
3247 mn_now = get_clock (); 3836 mn_now = get_clock ();
3248 3837
3249 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3250 /* interpolate in the meantime */ 3839 /* interpolate in the meantime */
3251 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3840 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3252 { 3841 {
3253 ev_rt_now = rtmn_diff + mn_now; 3842 ev_rt_now = rtmn_diff + mn_now;
3254 return; 3843 return;
3255 } 3844 }
3256 3845
… …
3270 ev_tstamp diff; 3859 ev_tstamp diff;
3271 rtmn_diff = ev_rt_now - mn_now; 3860 rtmn_diff = ev_rt_now - mn_now;
3272 3861
3273 diff = odiff - rtmn_diff; 3862 diff = odiff - rtmn_diff;
3274 3863
3275 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3864 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3276 return; /* all is well */ 3865 return; /* all is well */
3277 3866
3278 ev_rt_now = ev_time (); 3867 ev_rt_now = ev_time ();
3279 mn_now = get_clock (); 3868 mn_now = get_clock ();
3280 now_floor = mn_now; 3869 now_floor = mn_now;
… …
3289 else 3878 else
3290#endif 3879#endif
3291 { 3880 {
3292 ev_rt_now = ev_time (); 3881 ev_rt_now = ev_time ();
3293 3882
3294 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3883 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3295 { 3884 {
3296 /* adjust timers. this is easy, as the offset is the same for all of them */ 3885 /* adjust timers. this is easy, as the offset is the same for all of them */
3297 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3886 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3298#if EV_PERIODIC_ENABLE 3887#if EV_PERIODIC_ENABLE
3299 periodics_reschedule (EV_A); 3888 periodics_reschedule (EV_A);
… …
3322#if EV_VERIFY >= 2 3911#if EV_VERIFY >= 2
3323 ev_verify (EV_A); 3912 ev_verify (EV_A);
3324#endif 3913#endif
3325 3914
3326#ifndef _WIN32 3915#ifndef _WIN32
3327 if (expect_false (curpid)) /* penalise the forking check even more */ 3916 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3328 if (expect_false (getpid () != curpid)) 3917 if (ecb_expect_false (getpid () != curpid))
3329 { 3918 {
3330 curpid = getpid (); 3919 curpid = getpid ();
3331 postfork = 1; 3920 postfork = 1;
3332 } 3921 }
3333#endif 3922#endif
3334 3923
3335#if EV_FORK_ENABLE 3924#if EV_FORK_ENABLE
3336 /* we might have forked, so queue fork handlers */ 3925 /* we might have forked, so queue fork handlers */
3337 if (expect_false (postfork)) 3926 if (ecb_expect_false (postfork))
3338 if (forkcnt) 3927 if (forkcnt)
3339 { 3928 {
3340 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3929 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3341 EV_INVOKE_PENDING; 3930 EV_INVOKE_PENDING;
3342 } 3931 }
3343#endif 3932#endif
3344 3933
3345#if EV_PREPARE_ENABLE 3934#if EV_PREPARE_ENABLE
3346 /* queue prepare watchers (and execute them) */ 3935 /* queue prepare watchers (and execute them) */
3347 if (expect_false (preparecnt)) 3936 if (ecb_expect_false (preparecnt))
3348 { 3937 {
3349 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3350 EV_INVOKE_PENDING; 3939 EV_INVOKE_PENDING;
3351 } 3940 }
3352#endif 3941#endif
3353 3942
3354 if (expect_false (loop_done)) 3943 if (ecb_expect_false (loop_done))
3355 break; 3944 break;
3356 3945
3357 /* we might have forked, so reify kernel state if necessary */ 3946 /* we might have forked, so reify kernel state if necessary */
3358 if (expect_false (postfork)) 3947 if (ecb_expect_false (postfork))
3359 loop_fork (EV_A); 3948 loop_fork (EV_A);
3360 3949
3361 /* update fd-related kernel structures */ 3950 /* update fd-related kernel structures */
3362 fd_reify (EV_A); 3951 fd_reify (EV_A);
3363 3952
… …
3368 3957
3369 /* remember old timestamp for io_blocktime calculation */ 3958 /* remember old timestamp for io_blocktime calculation */
3370 ev_tstamp prev_mn_now = mn_now; 3959 ev_tstamp prev_mn_now = mn_now;
3371 3960
3372 /* update time to cancel out callback processing overhead */ 3961 /* update time to cancel out callback processing overhead */
3373 time_update (EV_A_ 1e100); 3962 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3374 3963
3375 /* from now on, we want a pipe-wake-up */ 3964 /* from now on, we want a pipe-wake-up */
3376 pipe_write_wanted = 1; 3965 pipe_write_wanted = 1;
3377 3966
3378 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3967 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3379 3968
3380 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3969 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3381 { 3970 {
3382 waittime = MAX_BLOCKTIME; 3971 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3383 3972
3384 if (timercnt) 3973 if (timercnt)
3385 { 3974 {
3386 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3387 if (waittime > to) waittime = to; 3976 if (waittime > to) waittime = to;
… …
3394 if (waittime > to) waittime = to; 3983 if (waittime > to) waittime = to;
3395 } 3984 }
3396#endif 3985#endif
3397 3986
3398 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3987 /* don't let timeouts decrease the waittime below timeout_blocktime */
3399 if (expect_false (waittime < timeout_blocktime)) 3988 if (ecb_expect_false (waittime < timeout_blocktime))
3400 waittime = timeout_blocktime; 3989 waittime = timeout_blocktime;
3401 3990
3402 /* at this point, we NEED to wait, so we have to ensure */ 3991 /* now there are two more special cases left, either we have
3403 /* to pass a minimum nonzero value to the backend */ 3992 * already-expired timers, so we should not sleep, or we have timers
3993 * that expire very soon, in which case we need to wait for a minimum
3994 * amount of time for some event loop backends.
3995 */
3404 if (expect_false (waittime < backend_mintime)) 3996 if (ecb_expect_false (waittime < backend_mintime))
3997 waittime = waittime <= EV_TS_CONST (0.)
3998 ? EV_TS_CONST (0.)
3405 waittime = backend_mintime; 3999 : backend_mintime;
3406 4000
3407 /* extra check because io_blocktime is commonly 0 */ 4001 /* extra check because io_blocktime is commonly 0 */
3408 if (expect_false (io_blocktime)) 4002 if (ecb_expect_false (io_blocktime))
3409 { 4003 {
3410 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4004 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3411 4005
3412 if (sleeptime > waittime - backend_mintime) 4006 if (sleeptime > waittime - backend_mintime)
3413 sleeptime = waittime - backend_mintime; 4007 sleeptime = waittime - backend_mintime;
3414 4008
3415 if (expect_true (sleeptime > 0.)) 4009 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3416 { 4010 {
3417 ev_sleep (sleeptime); 4011 ev_sleep (sleeptime);
3418 waittime -= sleeptime; 4012 waittime -= sleeptime;
3419 } 4013 }
3420 } 4014 }
… …
3434 { 4028 {
3435 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4029 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3436 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4030 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3437 } 4031 }
3438 4032
3439
3440 /* update ev_rt_now, do magic */ 4033 /* update ev_rt_now, do magic */
3441 time_update (EV_A_ waittime + sleeptime); 4034 time_update (EV_A_ waittime + sleeptime);
3442 } 4035 }
3443 4036
3444 /* queue pending timers and reschedule them */ 4037 /* queue pending timers and reschedule them */
… …
3452 idle_reify (EV_A); 4045 idle_reify (EV_A);
3453#endif 4046#endif
3454 4047
3455#if EV_CHECK_ENABLE 4048#if EV_CHECK_ENABLE
3456 /* queue check watchers, to be executed first */ 4049 /* queue check watchers, to be executed first */
3457 if (expect_false (checkcnt)) 4050 if (ecb_expect_false (checkcnt))
3458 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4051 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3459#endif 4052#endif
3460 4053
3461 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
3462 } 4055 }
3463 while (expect_true ( 4056 while (ecb_expect_true (
3464 activecnt 4057 activecnt
3465 && !loop_done 4058 && !loop_done
3466 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4059 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3467 )); 4060 ));
3468 4061
… …
3475 4068
3476 return activecnt; 4069 return activecnt;
3477} 4070}
3478 4071
3479void 4072void
3480ev_break (EV_P_ int how) EV_THROW 4073ev_break (EV_P_ int how) EV_NOEXCEPT
3481{ 4074{
3482 loop_done = how; 4075 loop_done = how;
3483} 4076}
3484 4077
3485void 4078void
3486ev_ref (EV_P) EV_THROW 4079ev_ref (EV_P) EV_NOEXCEPT
3487{ 4080{
3488 ++activecnt; 4081 ++activecnt;
3489} 4082}
3490 4083
3491void 4084void
3492ev_unref (EV_P) EV_THROW 4085ev_unref (EV_P) EV_NOEXCEPT
3493{ 4086{
3494 --activecnt; 4087 --activecnt;
3495} 4088}
3496 4089
3497void 4090void
3498ev_now_update (EV_P) EV_THROW 4091ev_now_update (EV_P) EV_NOEXCEPT
3499{ 4092{
3500 time_update (EV_A_ 1e100); 4093 time_update (EV_A_ EV_TSTAMP_HUGE);
3501} 4094}
3502 4095
3503void 4096void
3504ev_suspend (EV_P) EV_THROW 4097ev_suspend (EV_P) EV_NOEXCEPT
3505{ 4098{
3506 ev_now_update (EV_A); 4099 ev_now_update (EV_A);
3507} 4100}
3508 4101
3509void 4102void
3510ev_resume (EV_P) EV_THROW 4103ev_resume (EV_P) EV_NOEXCEPT
3511{ 4104{
3512 ev_tstamp mn_prev = mn_now; 4105 ev_tstamp mn_prev = mn_now;
3513 4106
3514 ev_now_update (EV_A); 4107 ev_now_update (EV_A);
3515 timers_reschedule (EV_A_ mn_now - mn_prev); 4108 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3532inline_size void 4125inline_size void
3533wlist_del (WL *head, WL elem) 4126wlist_del (WL *head, WL elem)
3534{ 4127{
3535 while (*head) 4128 while (*head)
3536 { 4129 {
3537 if (expect_true (*head == elem)) 4130 if (ecb_expect_true (*head == elem))
3538 { 4131 {
3539 *head = elem->next; 4132 *head = elem->next;
3540 break; 4133 break;
3541 } 4134 }
3542 4135
… …
3554 w->pending = 0; 4147 w->pending = 0;
3555 } 4148 }
3556} 4149}
3557 4150
3558int 4151int
3559ev_clear_pending (EV_P_ void *w) EV_THROW 4152ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3560{ 4153{
3561 W w_ = (W)w; 4154 W w_ = (W)w;
3562 int pending = w_->pending; 4155 int pending = w_->pending;
3563 4156
3564 if (expect_true (pending)) 4157 if (ecb_expect_true (pending))
3565 { 4158 {
3566 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4159 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3567 p->w = (W)&pending_w; 4160 p->w = (W)&pending_w;
3568 w_->pending = 0; 4161 w_->pending = 0;
3569 return p->events; 4162 return p->events;
… …
3596 w->active = 0; 4189 w->active = 0;
3597} 4190}
3598 4191
3599/*****************************************************************************/ 4192/*****************************************************************************/
3600 4193
3601void noinline 4194ecb_noinline
4195void
3602ev_io_start (EV_P_ ev_io *w) EV_THROW 4196ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3603{ 4197{
3604 int fd = w->fd; 4198 int fd = w->fd;
3605 4199
3606 if (expect_false (ev_is_active (w))) 4200 if (ecb_expect_false (ev_is_active (w)))
3607 return; 4201 return;
3608 4202
3609 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4203 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3610 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4204 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3611 4205
4206#if EV_VERIFY >= 2
4207 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4208#endif
3612 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
3613 4210
3614 ev_start (EV_A_ (W)w, 1); 4211 ev_start (EV_A_ (W)w, 1);
3615 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4212 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3616 wlist_add (&anfds[fd].head, (WL)w); 4213 wlist_add (&anfds[fd].head, (WL)w);
3617 4214
3618 /* common bug, apparently */ 4215 /* common bug, apparently */
3619 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4216 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3620 4217
… …
3622 w->events &= ~EV__IOFDSET; 4219 w->events &= ~EV__IOFDSET;
3623 4220
3624 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3625} 4222}
3626 4223
3627void noinline 4224ecb_noinline
4225void
3628ev_io_stop (EV_P_ ev_io *w) EV_THROW 4226ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3629{ 4227{
3630 clear_pending (EV_A_ (W)w); 4228 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w))) 4229 if (ecb_expect_false (!ev_is_active (w)))
3632 return; 4230 return;
3633 4231
3634 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4232 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3635 4233
4234#if EV_VERIFY >= 2
4235 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4236#endif
3636 EV_FREQUENT_CHECK; 4237 EV_FREQUENT_CHECK;
3637 4238
3638 wlist_del (&anfds[w->fd].head, (WL)w); 4239 wlist_del (&anfds[w->fd].head, (WL)w);
3639 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
3640 4241
3641 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3642 4243
3643 EV_FREQUENT_CHECK; 4244 EV_FREQUENT_CHECK;
3644} 4245}
3645 4246
3646void noinline 4247ecb_noinline
4248void
3647ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4249ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3648{ 4250{
3649 if (expect_false (ev_is_active (w))) 4251 if (ecb_expect_false (ev_is_active (w)))
3650 return; 4252 return;
3651 4253
3652 ev_at (w) += mn_now; 4254 ev_at (w) += mn_now;
3653 4255
3654 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4256 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3655 4257
3656 EV_FREQUENT_CHECK; 4258 EV_FREQUENT_CHECK;
3657 4259
3658 ++timercnt; 4260 ++timercnt;
3659 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4261 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3660 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4262 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3661 ANHE_w (timers [ev_active (w)]) = (WT)w; 4263 ANHE_w (timers [ev_active (w)]) = (WT)w;
3662 ANHE_at_cache (timers [ev_active (w)]); 4264 ANHE_at_cache (timers [ev_active (w)]);
3663 upheap (timers, ev_active (w)); 4265 upheap (timers, ev_active (w));
3664 4266
3665 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3666 4268
3667 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4269 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3668} 4270}
3669 4271
3670void noinline 4272ecb_noinline
4273void
3671ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4274ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3672{ 4275{
3673 clear_pending (EV_A_ (W)w); 4276 clear_pending (EV_A_ (W)w);
3674 if (expect_false (!ev_is_active (w))) 4277 if (ecb_expect_false (!ev_is_active (w)))
3675 return; 4278 return;
3676 4279
3677 EV_FREQUENT_CHECK; 4280 EV_FREQUENT_CHECK;
3678 4281
3679 { 4282 {
… …
3681 4284
3682 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4285 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3683 4286
3684 --timercnt; 4287 --timercnt;
3685 4288
3686 if (expect_true (active < timercnt + HEAP0)) 4289 if (ecb_expect_true (active < timercnt + HEAP0))
3687 { 4290 {
3688 timers [active] = timers [timercnt + HEAP0]; 4291 timers [active] = timers [timercnt + HEAP0];
3689 adjustheap (timers, timercnt, active); 4292 adjustheap (timers, timercnt, active);
3690 } 4293 }
3691 } 4294 }
… …
3695 ev_stop (EV_A_ (W)w); 4298 ev_stop (EV_A_ (W)w);
3696 4299
3697 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3698} 4301}
3699 4302
3700void noinline 4303ecb_noinline
4304void
3701ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4305ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3702{ 4306{
3703 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
3704 4308
3705 clear_pending (EV_A_ (W)w); 4309 clear_pending (EV_A_ (W)w);
3706 4310
… …
3723 4327
3724 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
3725} 4329}
3726 4330
3727ev_tstamp 4331ev_tstamp
3728ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4332ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3729{ 4333{
3730 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4334 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3731} 4335}
3732 4336
3733#if EV_PERIODIC_ENABLE 4337#if EV_PERIODIC_ENABLE
3734void noinline 4338ecb_noinline
4339void
3735ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4340ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3736{ 4341{
3737 if (expect_false (ev_is_active (w))) 4342 if (ecb_expect_false (ev_is_active (w)))
3738 return; 4343 return;
4344
4345#if EV_USE_TIMERFD
4346 if (timerfd == -2)
4347 evtimerfd_init (EV_A);
4348#endif
3739 4349
3740 if (w->reschedule_cb) 4350 if (w->reschedule_cb)
3741 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4351 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3742 else if (w->interval) 4352 else if (w->interval)
3743 { 4353 {
… …
3749 4359
3750 EV_FREQUENT_CHECK; 4360 EV_FREQUENT_CHECK;
3751 4361
3752 ++periodiccnt; 4362 ++periodiccnt;
3753 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4363 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3754 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4364 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3755 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4365 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3756 ANHE_at_cache (periodics [ev_active (w)]); 4366 ANHE_at_cache (periodics [ev_active (w)]);
3757 upheap (periodics, ev_active (w)); 4367 upheap (periodics, ev_active (w));
3758 4368
3759 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3760 4370
3761 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4371 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3762} 4372}
3763 4373
3764void noinline 4374ecb_noinline
4375void
3765ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4376ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3766{ 4377{
3767 clear_pending (EV_A_ (W)w); 4378 clear_pending (EV_A_ (W)w);
3768 if (expect_false (!ev_is_active (w))) 4379 if (ecb_expect_false (!ev_is_active (w)))
3769 return; 4380 return;
3770 4381
3771 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
3772 4383
3773 { 4384 {
… …
3775 4386
3776 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4387 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3777 4388
3778 --periodiccnt; 4389 --periodiccnt;
3779 4390
3780 if (expect_true (active < periodiccnt + HEAP0)) 4391 if (ecb_expect_true (active < periodiccnt + HEAP0))
3781 { 4392 {
3782 periodics [active] = periodics [periodiccnt + HEAP0]; 4393 periodics [active] = periodics [periodiccnt + HEAP0];
3783 adjustheap (periodics, periodiccnt, active); 4394 adjustheap (periodics, periodiccnt, active);
3784 } 4395 }
3785 } 4396 }
… …
3787 ev_stop (EV_A_ (W)w); 4398 ev_stop (EV_A_ (W)w);
3788 4399
3789 EV_FREQUENT_CHECK; 4400 EV_FREQUENT_CHECK;
3790} 4401}
3791 4402
3792void noinline 4403ecb_noinline
4404void
3793ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4405ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3794{ 4406{
3795 /* TODO: use adjustheap and recalculation */ 4407 /* TODO: use adjustheap and recalculation */
3796 ev_periodic_stop (EV_A_ w); 4408 ev_periodic_stop (EV_A_ w);
3797 ev_periodic_start (EV_A_ w); 4409 ev_periodic_start (EV_A_ w);
3798} 4410}
… …
3802# define SA_RESTART 0 4414# define SA_RESTART 0
3803#endif 4415#endif
3804 4416
3805#if EV_SIGNAL_ENABLE 4417#if EV_SIGNAL_ENABLE
3806 4418
3807void noinline 4419ecb_noinline
4420void
3808ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4421ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3809{ 4422{
3810 if (expect_false (ev_is_active (w))) 4423 if (ecb_expect_false (ev_is_active (w)))
3811 return; 4424 return;
3812 4425
3813 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3814 4427
3815#if EV_MULTIPLICITY 4428#if EV_MULTIPLICITY
… …
3884 } 4497 }
3885 4498
3886 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3887} 4500}
3888 4501
3889void noinline 4502ecb_noinline
4503void
3890ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4504ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3891{ 4505{
3892 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3893 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3894 return; 4508 return;
3895 4509
3896 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3897 4511
3898 wlist_del (&signals [w->signum - 1].head, (WL)w); 4512 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3926#endif 4540#endif
3927 4541
3928#if EV_CHILD_ENABLE 4542#if EV_CHILD_ENABLE
3929 4543
3930void 4544void
3931ev_child_start (EV_P_ ev_child *w) EV_THROW 4545ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3932{ 4546{
3933#if EV_MULTIPLICITY 4547#if EV_MULTIPLICITY
3934 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4548 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3935#endif 4549#endif
3936 if (expect_false (ev_is_active (w))) 4550 if (ecb_expect_false (ev_is_active (w)))
3937 return; 4551 return;
3938 4552
3939 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
3940 4554
3941 ev_start (EV_A_ (W)w, 1); 4555 ev_start (EV_A_ (W)w, 1);
… …
3943 4557
3944 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
3945} 4559}
3946 4560
3947void 4561void
3948ev_child_stop (EV_P_ ev_child *w) EV_THROW 4562ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3949{ 4563{
3950 clear_pending (EV_A_ (W)w); 4564 clear_pending (EV_A_ (W)w);
3951 if (expect_false (!ev_is_active (w))) 4565 if (ecb_expect_false (!ev_is_active (w)))
3952 return; 4566 return;
3953 4567
3954 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3955 4569
3956 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4570 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3970 4584
3971#define DEF_STAT_INTERVAL 5.0074891 4585#define DEF_STAT_INTERVAL 5.0074891
3972#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3973#define MIN_STAT_INTERVAL 0.1074891 4587#define MIN_STAT_INTERVAL 0.1074891
3974 4588
3975static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4589ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3976 4590
3977#if EV_USE_INOTIFY 4591#if EV_USE_INOTIFY
3978 4592
3979/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4593/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3980# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4594# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3981 4595
3982static void noinline 4596ecb_noinline
4597static void
3983infy_add (EV_P_ ev_stat *w) 4598infy_add (EV_P_ ev_stat *w)
3984{ 4599{
3985 w->wd = inotify_add_watch (fs_fd, w->path, 4600 w->wd = inotify_add_watch (fs_fd, w->path,
3986 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4601 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3987 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4602 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
4051 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4666 if (ev_is_active (&w->timer)) ev_ref (EV_A);
4052 ev_timer_again (EV_A_ &w->timer); 4667 ev_timer_again (EV_A_ &w->timer);
4053 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4668 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4054} 4669}
4055 4670
4056static void noinline 4671ecb_noinline
4672static void
4057infy_del (EV_P_ ev_stat *w) 4673infy_del (EV_P_ ev_stat *w)
4058{ 4674{
4059 int slot; 4675 int slot;
4060 int wd = w->wd; 4676 int wd = w->wd;
4061 4677
… …
4068 4684
4069 /* remove this watcher, if others are watching it, they will rearm */ 4685 /* remove this watcher, if others are watching it, they will rearm */
4070 inotify_rm_watch (fs_fd, wd); 4686 inotify_rm_watch (fs_fd, wd);
4071} 4687}
4072 4688
4073static void noinline 4689ecb_noinline
4690static void
4074infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4691infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4075{ 4692{
4076 if (slot < 0) 4693 if (slot < 0)
4077 /* overflow, need to check for all hash slots */ 4694 /* overflow, need to check for all hash slots */
4078 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4695 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4114 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4731 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4115 ofs += sizeof (struct inotify_event) + ev->len; 4732 ofs += sizeof (struct inotify_event) + ev->len;
4116 } 4733 }
4117} 4734}
4118 4735
4119inline_size void ecb_cold 4736inline_size ecb_cold
4737void
4120ev_check_2625 (EV_P) 4738ev_check_2625 (EV_P)
4121{ 4739{
4122 /* kernels < 2.6.25 are borked 4740 /* kernels < 2.6.25 are borked
4123 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4741 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4124 */ 4742 */
… …
4214#else 4832#else
4215# define EV_LSTAT(p,b) lstat (p, b) 4833# define EV_LSTAT(p,b) lstat (p, b)
4216#endif 4834#endif
4217 4835
4218void 4836void
4219ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4837ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4220{ 4838{
4221 if (lstat (w->path, &w->attr) < 0) 4839 if (lstat (w->path, &w->attr) < 0)
4222 w->attr.st_nlink = 0; 4840 w->attr.st_nlink = 0;
4223 else if (!w->attr.st_nlink) 4841 else if (!w->attr.st_nlink)
4224 w->attr.st_nlink = 1; 4842 w->attr.st_nlink = 1;
4225} 4843}
4226 4844
4227static void noinline 4845ecb_noinline
4846static void
4228stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4847stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4229{ 4848{
4230 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4849 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4231 4850
4232 ev_statdata prev = w->attr; 4851 ev_statdata prev = w->attr;
… …
4263 ev_feed_event (EV_A_ w, EV_STAT); 4882 ev_feed_event (EV_A_ w, EV_STAT);
4264 } 4883 }
4265} 4884}
4266 4885
4267void 4886void
4268ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4887ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4269{ 4888{
4270 if (expect_false (ev_is_active (w))) 4889 if (ecb_expect_false (ev_is_active (w)))
4271 return; 4890 return;
4272 4891
4273 ev_stat_stat (EV_A_ w); 4892 ev_stat_stat (EV_A_ w);
4274 4893
4275 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4894 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4294 4913
4295 EV_FREQUENT_CHECK; 4914 EV_FREQUENT_CHECK;
4296} 4915}
4297 4916
4298void 4917void
4299ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4918ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4300{ 4919{
4301 clear_pending (EV_A_ (W)w); 4920 clear_pending (EV_A_ (W)w);
4302 if (expect_false (!ev_is_active (w))) 4921 if (ecb_expect_false (!ev_is_active (w)))
4303 return; 4922 return;
4304 4923
4305 EV_FREQUENT_CHECK; 4924 EV_FREQUENT_CHECK;
4306 4925
4307#if EV_USE_INOTIFY 4926#if EV_USE_INOTIFY
… …
4320} 4939}
4321#endif 4940#endif
4322 4941
4323#if EV_IDLE_ENABLE 4942#if EV_IDLE_ENABLE
4324void 4943void
4325ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4944ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4326{ 4945{
4327 if (expect_false (ev_is_active (w))) 4946 if (ecb_expect_false (ev_is_active (w)))
4328 return; 4947 return;
4329 4948
4330 pri_adjust (EV_A_ (W)w); 4949 pri_adjust (EV_A_ (W)w);
4331 4950
4332 EV_FREQUENT_CHECK; 4951 EV_FREQUENT_CHECK;
… …
4335 int active = ++idlecnt [ABSPRI (w)]; 4954 int active = ++idlecnt [ABSPRI (w)];
4336 4955
4337 ++idleall; 4956 ++idleall;
4338 ev_start (EV_A_ (W)w, active); 4957 ev_start (EV_A_ (W)w, active);
4339 4958
4340 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4959 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4341 idles [ABSPRI (w)][active - 1] = w; 4960 idles [ABSPRI (w)][active - 1] = w;
4342 } 4961 }
4343 4962
4344 EV_FREQUENT_CHECK; 4963 EV_FREQUENT_CHECK;
4345} 4964}
4346 4965
4347void 4966void
4348ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4967ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4349{ 4968{
4350 clear_pending (EV_A_ (W)w); 4969 clear_pending (EV_A_ (W)w);
4351 if (expect_false (!ev_is_active (w))) 4970 if (ecb_expect_false (!ev_is_active (w)))
4352 return; 4971 return;
4353 4972
4354 EV_FREQUENT_CHECK; 4973 EV_FREQUENT_CHECK;
4355 4974
4356 { 4975 {
… …
4367} 4986}
4368#endif 4987#endif
4369 4988
4370#if EV_PREPARE_ENABLE 4989#if EV_PREPARE_ENABLE
4371void 4990void
4372ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4991ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4373{ 4992{
4374 if (expect_false (ev_is_active (w))) 4993 if (ecb_expect_false (ev_is_active (w)))
4375 return; 4994 return;
4376 4995
4377 EV_FREQUENT_CHECK; 4996 EV_FREQUENT_CHECK;
4378 4997
4379 ev_start (EV_A_ (W)w, ++preparecnt); 4998 ev_start (EV_A_ (W)w, ++preparecnt);
4380 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4999 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4381 prepares [preparecnt - 1] = w; 5000 prepares [preparecnt - 1] = w;
4382 5001
4383 EV_FREQUENT_CHECK; 5002 EV_FREQUENT_CHECK;
4384} 5003}
4385 5004
4386void 5005void
4387ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 5006ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4388{ 5007{
4389 clear_pending (EV_A_ (W)w); 5008 clear_pending (EV_A_ (W)w);
4390 if (expect_false (!ev_is_active (w))) 5009 if (ecb_expect_false (!ev_is_active (w)))
4391 return; 5010 return;
4392 5011
4393 EV_FREQUENT_CHECK; 5012 EV_FREQUENT_CHECK;
4394 5013
4395 { 5014 {
… …
4405} 5024}
4406#endif 5025#endif
4407 5026
4408#if EV_CHECK_ENABLE 5027#if EV_CHECK_ENABLE
4409void 5028void
4410ev_check_start (EV_P_ ev_check *w) EV_THROW 5029ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4411{ 5030{
4412 if (expect_false (ev_is_active (w))) 5031 if (ecb_expect_false (ev_is_active (w)))
4413 return; 5032 return;
4414 5033
4415 EV_FREQUENT_CHECK; 5034 EV_FREQUENT_CHECK;
4416 5035
4417 ev_start (EV_A_ (W)w, ++checkcnt); 5036 ev_start (EV_A_ (W)w, ++checkcnt);
4418 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5037 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4419 checks [checkcnt - 1] = w; 5038 checks [checkcnt - 1] = w;
4420 5039
4421 EV_FREQUENT_CHECK; 5040 EV_FREQUENT_CHECK;
4422} 5041}
4423 5042
4424void 5043void
4425ev_check_stop (EV_P_ ev_check *w) EV_THROW 5044ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4426{ 5045{
4427 clear_pending (EV_A_ (W)w); 5046 clear_pending (EV_A_ (W)w);
4428 if (expect_false (!ev_is_active (w))) 5047 if (ecb_expect_false (!ev_is_active (w)))
4429 return; 5048 return;
4430 5049
4431 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
4432 5051
4433 { 5052 {
… …
4442 EV_FREQUENT_CHECK; 5061 EV_FREQUENT_CHECK;
4443} 5062}
4444#endif 5063#endif
4445 5064
4446#if EV_EMBED_ENABLE 5065#if EV_EMBED_ENABLE
4447void noinline 5066ecb_noinline
5067void
4448ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5068ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4449{ 5069{
4450 ev_run (w->other, EVRUN_NOWAIT); 5070 ev_run (w->other, EVRUN_NOWAIT);
4451} 5071}
4452 5072
4453static void 5073static void
… …
4475 ev_run (EV_A_ EVRUN_NOWAIT); 5095 ev_run (EV_A_ EVRUN_NOWAIT);
4476 } 5096 }
4477 } 5097 }
4478} 5098}
4479 5099
5100#if EV_FORK_ENABLE
4480static void 5101static void
4481embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5102embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4482{ 5103{
4483 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5104 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4484 5105
… …
4491 ev_run (EV_A_ EVRUN_NOWAIT); 5112 ev_run (EV_A_ EVRUN_NOWAIT);
4492 } 5113 }
4493 5114
4494 ev_embed_start (EV_A_ w); 5115 ev_embed_start (EV_A_ w);
4495} 5116}
5117#endif
4496 5118
4497#if 0 5119#if 0
4498static void 5120static void
4499embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5121embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4500{ 5122{
4501 ev_idle_stop (EV_A_ idle); 5123 ev_idle_stop (EV_A_ idle);
4502} 5124}
4503#endif 5125#endif
4504 5126
4505void 5127void
4506ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5128ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4507{ 5129{
4508 if (expect_false (ev_is_active (w))) 5130 if (ecb_expect_false (ev_is_active (w)))
4509 return; 5131 return;
4510 5132
4511 { 5133 {
4512 EV_P = w->other; 5134 EV_P = w->other;
4513 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5135 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4521 5143
4522 ev_prepare_init (&w->prepare, embed_prepare_cb); 5144 ev_prepare_init (&w->prepare, embed_prepare_cb);
4523 ev_set_priority (&w->prepare, EV_MINPRI); 5145 ev_set_priority (&w->prepare, EV_MINPRI);
4524 ev_prepare_start (EV_A_ &w->prepare); 5146 ev_prepare_start (EV_A_ &w->prepare);
4525 5147
5148#if EV_FORK_ENABLE
4526 ev_fork_init (&w->fork, embed_fork_cb); 5149 ev_fork_init (&w->fork, embed_fork_cb);
4527 ev_fork_start (EV_A_ &w->fork); 5150 ev_fork_start (EV_A_ &w->fork);
5151#endif
4528 5152
4529 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5153 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4530 5154
4531 ev_start (EV_A_ (W)w, 1); 5155 ev_start (EV_A_ (W)w, 1);
4532 5156
4533 EV_FREQUENT_CHECK; 5157 EV_FREQUENT_CHECK;
4534} 5158}
4535 5159
4536void 5160void
4537ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5161ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4538{ 5162{
4539 clear_pending (EV_A_ (W)w); 5163 clear_pending (EV_A_ (W)w);
4540 if (expect_false (!ev_is_active (w))) 5164 if (ecb_expect_false (!ev_is_active (w)))
4541 return; 5165 return;
4542 5166
4543 EV_FREQUENT_CHECK; 5167 EV_FREQUENT_CHECK;
4544 5168
4545 ev_io_stop (EV_A_ &w->io); 5169 ev_io_stop (EV_A_ &w->io);
4546 ev_prepare_stop (EV_A_ &w->prepare); 5170 ev_prepare_stop (EV_A_ &w->prepare);
5171#if EV_FORK_ENABLE
4547 ev_fork_stop (EV_A_ &w->fork); 5172 ev_fork_stop (EV_A_ &w->fork);
5173#endif
4548 5174
4549 ev_stop (EV_A_ (W)w); 5175 ev_stop (EV_A_ (W)w);
4550 5176
4551 EV_FREQUENT_CHECK; 5177 EV_FREQUENT_CHECK;
4552} 5178}
4553#endif 5179#endif
4554 5180
4555#if EV_FORK_ENABLE 5181#if EV_FORK_ENABLE
4556void 5182void
4557ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5183ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4558{ 5184{
4559 if (expect_false (ev_is_active (w))) 5185 if (ecb_expect_false (ev_is_active (w)))
4560 return; 5186 return;
4561 5187
4562 EV_FREQUENT_CHECK; 5188 EV_FREQUENT_CHECK;
4563 5189
4564 ev_start (EV_A_ (W)w, ++forkcnt); 5190 ev_start (EV_A_ (W)w, ++forkcnt);
4565 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5191 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4566 forks [forkcnt - 1] = w; 5192 forks [forkcnt - 1] = w;
4567 5193
4568 EV_FREQUENT_CHECK; 5194 EV_FREQUENT_CHECK;
4569} 5195}
4570 5196
4571void 5197void
4572ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5198ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4573{ 5199{
4574 clear_pending (EV_A_ (W)w); 5200 clear_pending (EV_A_ (W)w);
4575 if (expect_false (!ev_is_active (w))) 5201 if (ecb_expect_false (!ev_is_active (w)))
4576 return; 5202 return;
4577 5203
4578 EV_FREQUENT_CHECK; 5204 EV_FREQUENT_CHECK;
4579 5205
4580 { 5206 {
… …
4590} 5216}
4591#endif 5217#endif
4592 5218
4593#if EV_CLEANUP_ENABLE 5219#if EV_CLEANUP_ENABLE
4594void 5220void
4595ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5221ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4596{ 5222{
4597 if (expect_false (ev_is_active (w))) 5223 if (ecb_expect_false (ev_is_active (w)))
4598 return; 5224 return;
4599 5225
4600 EV_FREQUENT_CHECK; 5226 EV_FREQUENT_CHECK;
4601 5227
4602 ev_start (EV_A_ (W)w, ++cleanupcnt); 5228 ev_start (EV_A_ (W)w, ++cleanupcnt);
4603 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5229 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4604 cleanups [cleanupcnt - 1] = w; 5230 cleanups [cleanupcnt - 1] = w;
4605 5231
4606 /* cleanup watchers should never keep a refcount on the loop */ 5232 /* cleanup watchers should never keep a refcount on the loop */
4607 ev_unref (EV_A); 5233 ev_unref (EV_A);
4608 EV_FREQUENT_CHECK; 5234 EV_FREQUENT_CHECK;
4609} 5235}
4610 5236
4611void 5237void
4612ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5238ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4613{ 5239{
4614 clear_pending (EV_A_ (W)w); 5240 clear_pending (EV_A_ (W)w);
4615 if (expect_false (!ev_is_active (w))) 5241 if (ecb_expect_false (!ev_is_active (w)))
4616 return; 5242 return;
4617 5243
4618 EV_FREQUENT_CHECK; 5244 EV_FREQUENT_CHECK;
4619 ev_ref (EV_A); 5245 ev_ref (EV_A);
4620 5246
… …
4631} 5257}
4632#endif 5258#endif
4633 5259
4634#if EV_ASYNC_ENABLE 5260#if EV_ASYNC_ENABLE
4635void 5261void
4636ev_async_start (EV_P_ ev_async *w) EV_THROW 5262ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4637{ 5263{
4638 if (expect_false (ev_is_active (w))) 5264 if (ecb_expect_false (ev_is_active (w)))
4639 return; 5265 return;
4640 5266
4641 w->sent = 0; 5267 w->sent = 0;
4642 5268
4643 evpipe_init (EV_A); 5269 evpipe_init (EV_A);
4644 5270
4645 EV_FREQUENT_CHECK; 5271 EV_FREQUENT_CHECK;
4646 5272
4647 ev_start (EV_A_ (W)w, ++asynccnt); 5273 ev_start (EV_A_ (W)w, ++asynccnt);
4648 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5274 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4649 asyncs [asynccnt - 1] = w; 5275 asyncs [asynccnt - 1] = w;
4650 5276
4651 EV_FREQUENT_CHECK; 5277 EV_FREQUENT_CHECK;
4652} 5278}
4653 5279
4654void 5280void
4655ev_async_stop (EV_P_ ev_async *w) EV_THROW 5281ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4656{ 5282{
4657 clear_pending (EV_A_ (W)w); 5283 clear_pending (EV_A_ (W)w);
4658 if (expect_false (!ev_is_active (w))) 5284 if (ecb_expect_false (!ev_is_active (w)))
4659 return; 5285 return;
4660 5286
4661 EV_FREQUENT_CHECK; 5287 EV_FREQUENT_CHECK;
4662 5288
4663 { 5289 {
… …
4671 5297
4672 EV_FREQUENT_CHECK; 5298 EV_FREQUENT_CHECK;
4673} 5299}
4674 5300
4675void 5301void
4676ev_async_send (EV_P_ ev_async *w) EV_THROW 5302ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4677{ 5303{
4678 w->sent = 1; 5304 w->sent = 1;
4679 evpipe_write (EV_A_ &async_pending); 5305 evpipe_write (EV_A_ &async_pending);
4680} 5306}
4681#endif 5307#endif
… …
4718 5344
4719 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5345 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4720} 5346}
4721 5347
4722void 5348void
4723ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5349ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4724{ 5350{
4725 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5351 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4726
4727 if (expect_false (!once))
4728 {
4729 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4730 return;
4731 }
4732 5352
4733 once->cb = cb; 5353 once->cb = cb;
4734 once->arg = arg; 5354 once->arg = arg;
4735 5355
4736 ev_init (&once->io, once_cb_io); 5356 ev_init (&once->io, once_cb_io);
… …
4749} 5369}
4750 5370
4751/*****************************************************************************/ 5371/*****************************************************************************/
4752 5372
4753#if EV_WALK_ENABLE 5373#if EV_WALK_ENABLE
4754void ecb_cold 5374ecb_cold
5375void
4755ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5376ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4756{ 5377{
4757 int i, j; 5378 int i, j;
4758 ev_watcher_list *wl, *wn; 5379 ev_watcher_list *wl, *wn;
4759 5380
4760 if (types & (EV_IO | EV_EMBED)) 5381 if (types & (EV_IO | EV_EMBED))

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines