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

Comparing libev/ev.c (file contents):
Revision 1.456 by root, Thu Jul 4 22:32:23 2013 UTC vs.
Revision 1.517 by root, Tue Dec 24 13:52:58 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 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 EV_FEATURE_BACKENDS
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
208# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
209# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
210# endif 247# endif
211# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
212#endif 249#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221 250
222/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
223 252
224/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG 254#if defined EV_NSIG
… …
241#elif defined SIGARRAYSIZE 270#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig 272#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else 274#else
246# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif 276#endif
251 277
252#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
254#endif 280#endif
255 281
256#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else 285# else
260# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
287# endif
288#endif
289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
261# endif 296# endif
262#endif 297#endif
263 298
264#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
307 342
308#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
309# define EV_USE_PORT 0 344# define EV_USE_PORT 0
310#endif 345#endif
311 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 1
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
312#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
314# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
315# else 366# else
316# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
339# else 390# else
340# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
341# endif 392# endif
342#endif 393#endif
343 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
344#if 0 /* debugging */ 403#if 0 /* debugging */
345# define EV_VERIFY 3 404# define EV_VERIFY 3
346# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
347# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
348#endif 407#endif
… …
357 416
358#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif 419#endif
361 420
362#ifdef ANDROID 421#ifdef __ANDROID__
363/* supposedly, android doesn't typedef fd_mask */ 422/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT 423# undef EV_USE_SELECT
365# define EV_USE_SELECT 0 424# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ 425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL 426# undef EV_USE_CLOCK_SYSCALL
… …
381# include <sys/syscall.h> 440# include <sys/syscall.h>
382# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
384# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
386# else 446# else
387# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
388# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
389# endif 449# endif
390#endif 450#endif
… …
404#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
405# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
406# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
407#endif 467#endif
408 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
409#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
410/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
412# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
413# endif 506# endif
414#endif 507#endif
415 508
416#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
417# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
422# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
423# endif 516# endif
424#endif 517#endif
425 518
426#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
428# include <stdint.h> 521# include <stdint.h>
429# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
430# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
431# endif 524# endif
432# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
438# endif 531# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif 533#endif
441 534
442#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
444# include <stdint.h> 537# include <stdint.h>
445# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
447# endif 540# endif
448# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
450# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
451# else 544# else
452# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
453# endif 546# endif
454# endif 547# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
456 549
457struct signalfd_siginfo 550struct signalfd_siginfo
458{ 551{
459 uint32_t ssi_signo; 552 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
461}; 554};
462#endif 555#endif
463 556
464/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
465 568
466#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
467# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
468#else 571#else
469# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
474 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
475 */ 578 */
476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
478 581
479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
481 584
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
482#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)
483#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
484 602
485/* 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 */
486/* ECB.H BEGIN */ 604/* ECB.H BEGIN */
487/* 605/*
488 * libecb - http://software.schmorp.de/pkg/libecb 606 * libecb - http://software.schmorp.de/pkg/libecb
489 * 607 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta 609 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved. 610 * All rights reserved.
493 * 611 *
494 * 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-
495 * tion, are permitted provided that the following conditions are met: 613 * tion, are permitted provided that the following conditions are met:
… …
509 * 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;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * 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.
514 */ 643 */
515 644
516#ifndef ECB_H 645#ifndef ECB_H
517#define ECB_H 646#define ECB_H
518 647
519/* 16 bits major, 16 bits minor */ 648/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003 649#define ECB_VERSION 0x00010006
521 650
522#ifdef _WIN32 651#ifdef _WIN32
523 typedef signed char int8_t; 652 typedef signed char int8_t;
524 typedef unsigned char uint8_t; 653 typedef unsigned char uint8_t;
525 typedef signed short int16_t; 654 typedef signed short int16_t;
… …
542 typedef uint32_t uintptr_t; 671 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t; 672 typedef int32_t intptr_t;
544 #endif 673 #endif
545#else 674#else
546 #include <inttypes.h> 675 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
548 #define ECB_PTRSIZE 8 677 #define ECB_PTRSIZE 8
549 #else 678 #else
550 #define ECB_PTRSIZE 4 679 #define ECB_PTRSIZE 4
551 #endif 680 #endif
552#endif 681#endif
553 682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
554/* work around x32 idiocy by defining proper macros */ 686/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64 687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
556 #if __ILP32 688 #if _ILP32
557 #define ECB_AMD64_X32 1 689 #define ECB_AMD64_X32 1
558 #else 690 #else
559 #define ECB_AMD64 1 691 #define ECB_AMD64 1
560 #endif 692 #endif
561#endif 693#endif
… …
565 * causing enormous grief in return for some better fake benchmark numbers. 697 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so. 698 * or so.
567 * 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
568 * 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.
569 */ 701 */
570#ifndef ECB_GCC_VERSION
571 #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__
572 #define ECB_GCC_VERSION(major,minor) 0 703 #define ECB_GCC_VERSION(major,minor) 0
573 #else 704#else
574 #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)))
575 #endif 706#endif
576#endif
577 707
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ 708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
579#define ECB_C99 (__STDC_VERSION__ >= 199901L) 709
580#define ECB_C11 (__STDC_VERSION__ >= 201112L) 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
720#endif
721
581#define ECB_CPP (__cplusplus+0) 722#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L) 723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
583 738
584#if ECB_CPP 739#if ECB_CPP
585 #define ECB_EXTERN_C extern "C" 740 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END } 742 #define ECB_EXTERN_C_END }
… …
602 757
603#if ECB_NO_SMP 758#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0) 759 #define ECB_MEMORY_FENCE do { } while (0)
605#endif 760#endif
606 761
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
607#ifndef ECB_MEMORY_FENCE 771#ifndef ECB_MEMORY_FENCE
608 #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")
609 #if __i386 || __i386__ 774 #if __i386 || __i386__
610 #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")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 778 #elif ECB_GCC_AMD64
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") 780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #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 */
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
621 #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")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__ 798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
626 #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")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__ 804 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__ 806 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */ 807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ 808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") 809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__ 810 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") 811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__ 812 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") 814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__ 815 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
642 #endif 823 #endif
643 #endif 824 #endif
644#endif 825#endif
645 826
646#ifndef ECB_MEMORY_FENCE 827#ifndef ECB_MEMORY_FENCE
647 #if ECB_GCC_VERSION(4,7) 828 #if ECB_GCC_VERSION(4,7)
648 /* see comment below (stdatomic.h) about the C11 memory model. */ 829 /* see comment below (stdatomic.h) about the C11 memory model. */
649 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
650 834
651 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 835 #elif ECB_CLANG_EXTENSION(c_atomic)
652 * without risking compile time errors with other compilers. We *could*
653 * define our own ecb_clang_has_feature, but I just can't be bothered to work
654 * around this shit time and again.
655 * #elif defined __clang && __has_feature (cxx_atomic)
656 * // see comment below (stdatomic.h) about the C11 memory model. 836 /* see comment below (stdatomic.h) about the C11 memory model. */
657 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
658 */ 838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
659 841
660 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
661 #define ECB_MEMORY_FENCE __sync_synchronize () 843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
662 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
663 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
664 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
665 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
666 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
667 #elif defined _WIN32 855 #elif defined _WIN32
668 #include <WinNT.h> 856 #include <WinNT.h>
669 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
670 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #include <mbarrier.h> 859 #include <mbarrier.h>
672 #define ECB_MEMORY_FENCE __machine_rw_barrier () 860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
673 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
674 #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 ()
675 #elif __xlC__ 864 #elif __xlC__
676 #define ECB_MEMORY_FENCE __sync () 865 #define ECB_MEMORY_FENCE __sync ()
677 #endif 866 #endif
678#endif 867#endif
679 868
680#ifndef ECB_MEMORY_FENCE 869#ifndef ECB_MEMORY_FENCE
681 #if ECB_C11 && !defined __STDC_NO_ATOMICS__ 870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
682 /* 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, */
683 /* not just C11 atomics and atomic accesses */ 872 /* not just C11 atomics and atomic accesses */
684 #include <stdatomic.h> 873 #include <stdatomic.h>
685 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
686 /* any fence other than seq_cst, which isn't very efficient for us. */
687 /* Why that is, we don't know - either the C11 memory model is quite useless */
688 /* for most usages, or gcc and clang have a bug */
689 /* I *currently* lean towards the latter, and inefficiently implement */
690 /* all three of ecb's fences as a seq_cst fence */
691 #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)
692 #endif 877 #endif
693#endif 878#endif
694 879
695#ifndef ECB_MEMORY_FENCE 880#ifndef ECB_MEMORY_FENCE
696 #if !ECB_AVOID_PTHREADS 881 #if !ECB_AVOID_PTHREADS
… …
716 901
717#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
718 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
719#endif 904#endif
720 905
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
721/*****************************************************************************/ 910/*****************************************************************************/
722 911
723#if __cplusplus 912#if ECB_CPP
724 #define ecb_inline static inline 913 #define ecb_inline static inline
725#elif ECB_GCC_VERSION(2,5) 914#elif ECB_GCC_VERSION(2,5)
726 #define ecb_inline static __inline__ 915 #define ecb_inline static __inline__
727#elif ECB_C99 916#elif ECB_C99
728 #define ecb_inline static inline 917 #define ecb_inline static inline
… …
742 931
743#define ECB_CONCAT_(a, b) a ## b 932#define ECB_CONCAT_(a, b) a ## b
744#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
745#define ECB_STRINGIFY_(a) # a 934#define ECB_STRINGIFY_(a) # a
746#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))
747 937
748#define ecb_function_ ecb_inline 938#define ecb_function_ ecb_inline
749 939
750#if ECB_GCC_VERSION(3,1) 940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
751 #define ecb_attribute(attrlist) __attribute__(attrlist) 941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
752 #define ecb_is_constant(expr) __builtin_constant_p (expr) 947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
753 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
754 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
755#else 964#else
756 #define ecb_attribute(attrlist)
757 #define ecb_is_constant(expr) 0
758 #define ecb_expect(expr,value) (expr)
759 #define ecb_prefetch(addr,rw,locality) 965 #define ecb_prefetch(addr,rw,locality)
760#endif 966#endif
761 967
762/* no emulation for ecb_decltype */ 968/* no emulation for ecb_decltype */
763#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; };
764 #define ecb_decltype(x) __decltype(x) 972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
765#elif ECB_GCC_VERSION(3,0) 973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
766 #define ecb_decltype(x) __typeof(x) 974 #define ecb_decltype(x) __typeof__ (x)
767#endif 975#endif
768 976
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
769#define ecb_noinline ecb_attribute ((__noinline__)) 994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
770#define ecb_unused ecb_attribute ((__unused__)) 997#define ecb_unused ecb_attribute ((__unused__))
771#define ecb_const ecb_attribute ((__const__)) 998#define ecb_const ecb_attribute ((__const__))
772#define ecb_pure ecb_attribute ((__pure__)) 999#define ecb_pure ecb_attribute ((__pure__))
773 1000
774#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 */
775 #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)
776#else 1009#else
777 #define ecb_noreturn ecb_attribute ((__noreturn__)) 1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
778#endif 1011#endif
779 1012
780#if ECB_GCC_VERSION(4,3) 1013#if ECB_GCC_VERSION(4,3)
… …
795/* for compatibility to the rest of the world */ 1028/* for compatibility to the rest of the world */
796#define ecb_likely(expr) ecb_expect_true (expr) 1029#define ecb_likely(expr) ecb_expect_true (expr)
797#define ecb_unlikely(expr) ecb_expect_false (expr) 1030#define ecb_unlikely(expr) ecb_expect_false (expr)
798 1031
799/* count trailing zero bits and count # of one bits */ 1032/* count trailing zero bits and count # of one bits */
800#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))
801 /* 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 */
802 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
803 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
804 #define ecb_ctz32(x) __builtin_ctz (x) 1040 #define ecb_ctz32(x) __builtin_ctz (x)
805 #define ecb_ctz64(x) __builtin_ctzll (x) 1041 #define ecb_ctz64(x) __builtin_ctzll (x)
806 #define ecb_popcount32(x) __builtin_popcount (x) 1042 #define ecb_popcount32(x) __builtin_popcount (x)
807 /* no popcountll */ 1043 /* no popcountll */
808#else 1044#else
809 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
810 ecb_function_ int 1046 ecb_function_ ecb_const int
811 ecb_ctz32 (uint32_t x) 1047 ecb_ctz32 (uint32_t x)
812 { 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
813 int r = 0; 1054 int r = 0;
814 1055
815 x &= ~x + 1; /* this isolates the lowest bit */ 1056 x &= ~x + 1; /* this isolates the lowest bit */
816 1057
817#if ECB_branchless_on_i386 1058#if ECB_branchless_on_i386
… …
827 if (x & 0xff00ff00) r += 8; 1068 if (x & 0xff00ff00) r += 8;
828 if (x & 0xffff0000) r += 16; 1069 if (x & 0xffff0000) r += 16;
829#endif 1070#endif
830 1071
831 return r; 1072 return r;
1073#endif
832 } 1074 }
833 1075
834 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
835 ecb_function_ int 1077 ecb_function_ ecb_const int
836 ecb_ctz64 (uint64_t x) 1078 ecb_ctz64 (uint64_t x)
837 { 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
838 int shift = x & 0xffffffffU ? 0 : 32; 1085 int shift = x & 0xffffffff ? 0 : 32;
839 return ecb_ctz32 (x >> shift) + shift; 1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
840 } 1088 }
841 1089
842 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
843 ecb_function_ int 1091 ecb_function_ ecb_const int
844 ecb_popcount32 (uint32_t x) 1092 ecb_popcount32 (uint32_t x)
845 { 1093 {
846 x -= (x >> 1) & 0x55555555; 1094 x -= (x >> 1) & 0x55555555;
847 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
848 x = ((x >> 4) + x) & 0x0f0f0f0f; 1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
849 x *= 0x01010101; 1097 x *= 0x01010101;
850 1098
851 return x >> 24; 1099 return x >> 24;
852 } 1100 }
853 1101
854 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
855 ecb_function_ int ecb_ld32 (uint32_t x) 1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
856 { 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
857 int r = 0; 1110 int r = 0;
858 1111
859 if (x >> 16) { x >>= 16; r += 16; } 1112 if (x >> 16) { x >>= 16; r += 16; }
860 if (x >> 8) { x >>= 8; r += 8; } 1113 if (x >> 8) { x >>= 8; r += 8; }
861 if (x >> 4) { x >>= 4; r += 4; } 1114 if (x >> 4) { x >>= 4; r += 4; }
862 if (x >> 2) { x >>= 2; r += 2; } 1115 if (x >> 2) { x >>= 2; r += 2; }
863 if (x >> 1) { r += 1; } 1116 if (x >> 1) { r += 1; }
864 1117
865 return r; 1118 return r;
1119#endif
866 } 1120 }
867 1121
868 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
869 ecb_function_ int ecb_ld64 (uint64_t x) 1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
870 { 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
871 int r = 0; 1130 int r = 0;
872 1131
873 if (x >> 32) { x >>= 32; r += 32; } 1132 if (x >> 32) { x >>= 32; r += 32; }
874 1133
875 return r + ecb_ld32 (x); 1134 return r + ecb_ld32 (x);
1135#endif
876 } 1136 }
877#endif 1137#endif
878 1138
879ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; 1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
880ecb_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)); }
881ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; 1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
882ecb_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)); }
883 1143
884ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
885ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
886{ 1146{
887 return ( (x * 0x0802U & 0x22110U) 1147 return ( (x * 0x0802U & 0x22110U)
888 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
889} 1149}
890 1150
891ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
892ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
893{ 1153{
894 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
895 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
896 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
897 x = ( x >> 8 ) | ( x << 8); 1157 x = ( x >> 8 ) | ( x << 8);
898 1158
899 return x; 1159 return x;
900} 1160}
901 1161
902ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
903ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
904{ 1164{
905 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
906 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
907 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
908 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
911 return x; 1171 return x;
912} 1172}
913 1173
914/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
915/* so for this version we are lazy */ 1175/* so for this version we are lazy */
916ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
917ecb_function_ int 1177ecb_function_ ecb_const int
918ecb_popcount64 (uint64_t x) 1178ecb_popcount64 (uint64_t x)
919{ 1179{
920 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
921} 1181}
922 1182
923ecb_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);
924ecb_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);
925ecb_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);
926ecb_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);
927ecb_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);
928ecb_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);
929ecb_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);
930ecb_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);
931 1191
932ecb_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); }
933ecb_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); }
934ecb_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); }
935ecb_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); }
936ecb_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); }
937ecb_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); }
938ecb_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); }
939ecb_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); }
940 1200
941#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
942 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
943 #define ecb_bswap32(x) __builtin_bswap32 (x) 1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
944 #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)))
945#else 1214#else
946 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
947 ecb_function_ uint16_t 1216 ecb_function_ ecb_const uint16_t
948 ecb_bswap16 (uint16_t x) 1217 ecb_bswap16 (uint16_t x)
949 { 1218 {
950 return ecb_rotl16 (x, 8); 1219 return ecb_rotl16 (x, 8);
951 } 1220 }
952 1221
953 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
954 ecb_function_ uint32_t 1223 ecb_function_ ecb_const uint32_t
955 ecb_bswap32 (uint32_t x) 1224 ecb_bswap32 (uint32_t x)
956 { 1225 {
957 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
958 } 1227 }
959 1228
960 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
961 ecb_function_ uint64_t 1230 ecb_function_ ecb_const uint64_t
962 ecb_bswap64 (uint64_t x) 1231 ecb_bswap64 (uint64_t x)
963 { 1232 {
964 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
965 } 1234 }
966#endif 1235#endif
967 1236
968#if ECB_GCC_VERSION(4,5) 1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
969 #define ecb_unreachable() __builtin_unreachable () 1238 #define ecb_unreachable() __builtin_unreachable ()
970#else 1239#else
971 /* 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 :/ */
972 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
973 ecb_inline void ecb_unreachable (void) { } 1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
974#endif 1243#endif
975 1244
976/* try to tell the compiler that some condition is definitely true */ 1245/* try to tell the compiler that some condition is definitely true */
977#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
978 1247
979ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
980ecb_inline unsigned char 1249ecb_inline ecb_const uint32_t
981ecb_byteorder_helper (void) 1250ecb_byteorder_helper (void)
982{ 1251{
983 /* the union code still generates code under pressure in gcc, */ 1252 /* the union code still generates code under pressure in gcc, */
984 /* but less than using pointers, and always seems to */ 1253 /* but less than using pointers, and always seems to */
985 /* successfully return a constant. */ 1254 /* successfully return a constant. */
986 /* the reason why we have this horrible preprocessor mess */ 1255 /* the reason why we have this horrible preprocessor mess */
987 /* 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 */
988 /* or when using a recent enough gcc version (>= 4.6) */ 1257 /* or when using a recent enough gcc version (>= 4.6) */
989#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
990 return 0x44;
991#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
992 return 0x44; 1261 return 0x44332211;
993#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
994 return 0x11; 1265 return 0x11223344;
995#else 1266#else
996 union 1267 union
997 { 1268 {
1269 uint8_t c[4];
998 uint32_t i; 1270 uint32_t u;
999 uint8_t c;
1000 } u = { 0x11223344 }; 1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1001 return u.c; 1272 return u.u;
1002#endif 1273#endif
1003} 1274}
1004 1275
1005ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1006ecb_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; }
1007ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1008ecb_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; }
1009 1280
1010#if ECB_GCC_VERSION(3,0) || ECB_C99 1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1011 #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))
1012#else 1283#else
1013 #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)))
1014#endif 1285#endif
1015 1286
1016#if __cplusplus 1287#if ECB_CPP
1017 template<typename T> 1288 template<typename T>
1018 static inline T ecb_div_rd (T val, T div) 1289 static inline T ecb_div_rd (T val, T div)
1019 { 1290 {
1020 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1021 } 1292 }
… …
1038 } 1309 }
1039#else 1310#else
1040 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1041#endif 1312#endif
1042 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
1043/*******************************************************************************/ 1410/*******************************************************************************/
1044/* floating point stuff, can be disabled by defining ECB_NO_LIBM */ 1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1045 1412
1046/* basically, everything uses "ieee pure-endian" floating point numbers */ 1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1047/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1048#if 0 \ 1415#if 0 \
1049 || __i386 || __i386__ \ 1416 || __i386 || __i386__ \
1050 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 1417 || ECB_GCC_AMD64 \
1051 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1052 || defined __arm__ && defined __ARM_EABI__ \
1053 || defined __s390__ || defined __s390x__ \ 1419 || defined __s390__ || defined __s390x__ \
1054 || defined __mips__ \ 1420 || defined __mips__ \
1055 || defined __alpha__ \ 1421 || defined __alpha__ \
1056 || defined __hppa__ \ 1422 || defined __hppa__ \
1057 || defined __ia64__ \ 1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1058 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1059 #define ECB_STDFP 1 1430 #define ECB_STDFP 1
1060 #include <string.h> /* for memcpy */ 1431 #include <string.h> /* for memcpy */
1061#else 1432#else
1062 #define ECB_STDFP 0 1433 #define ECB_STDFP 0
1063 #include <math.h> /* for frexp*, ldexp* */
1064#endif 1434#endif
1065 1435
1066#ifndef ECB_NO_LIBM 1436#ifndef ECB_NO_LIBM
1067 1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1068 /* convert a float to ieee single/binary32 */ 1461 /* convert a float to ieee single/binary32 */
1069 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);
1070 ecb_function_ uint32_t 1463 ecb_function_ ecb_const uint32_t
1071 ecb_float_to_binary32 (float x) 1464 ecb_float_to_binary32 (float x)
1072 { 1465 {
1073 uint32_t r; 1466 uint32_t r;
1074 1467
1075 #if ECB_STDFP 1468 #if ECB_STDFP
… …
1082 if (x == 0e0f ) return 0x00000000U; 1475 if (x == 0e0f ) return 0x00000000U;
1083 if (x > +3.40282346638528860e+38f) return 0x7f800000U; 1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1084 if (x < -3.40282346638528860e+38f) return 0xff800000U; 1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1085 if (x != x ) return 0x7fbfffffU; 1478 if (x != x ) return 0x7fbfffffU;
1086 1479
1087 m = frexpf (x, &e) * 0x1000000U; 1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1088 1481
1089 r = m & 0x80000000U; 1482 r = m & 0x80000000U;
1090 1483
1091 if (r) 1484 if (r)
1092 m = -m; 1485 m = -m;
… …
1104 1497
1105 return r; 1498 return r;
1106 } 1499 }
1107 1500
1108 /* converts an ieee single/binary32 to a float */ 1501 /* converts an ieee single/binary32 to a float */
1109 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);
1110 ecb_function_ float 1503 ecb_function_ ecb_const float
1111 ecb_binary32_to_float (uint32_t x) 1504 ecb_binary32_to_float (uint32_t x)
1112 { 1505 {
1113 float r; 1506 float r;
1114 1507
1115 #if ECB_STDFP 1508 #if ECB_STDFP
… …
1125 x |= 0x800000U; 1518 x |= 0x800000U;
1126 else 1519 else
1127 e = 1; 1520 e = 1;
1128 1521
1129 /* 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 */
1130 r = ldexpf (x * (0.5f / 0x800000U), e - 126); 1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1131 1524
1132 r = neg ? -r : r; 1525 r = neg ? -r : r;
1133 #endif 1526 #endif
1134 1527
1135 return r; 1528 return r;
1136 } 1529 }
1137 1530
1138 /* convert a double to ieee double/binary64 */ 1531 /* convert a double to ieee double/binary64 */
1139 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);
1140 ecb_function_ uint64_t 1533 ecb_function_ ecb_const uint64_t
1141 ecb_double_to_binary64 (double x) 1534 ecb_double_to_binary64 (double x)
1142 { 1535 {
1143 uint64_t r; 1536 uint64_t r;
1144 1537
1145 #if ECB_STDFP 1538 #if ECB_STDFP
… …
1174 1567
1175 return r; 1568 return r;
1176 } 1569 }
1177 1570
1178 /* converts an ieee double/binary64 to a double */ 1571 /* converts an ieee double/binary64 to a double */
1179 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);
1180 ecb_function_ double 1573 ecb_function_ ecb_const double
1181 ecb_binary64_to_double (uint64_t x) 1574 ecb_binary64_to_double (uint64_t x)
1182 { 1575 {
1183 double r; 1576 double r;
1184 1577
1185 #if ECB_STDFP 1578 #if ECB_STDFP
… …
1203 #endif 1596 #endif
1204 1597
1205 return r; 1598 return r;
1206 } 1599 }
1207 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
1208#endif 1617#endif
1209 1618
1210#endif 1619#endif
1211 1620
1212/* ECB.H END */ 1621/* ECB.H END */
1213 1622
1214#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1215/* 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
1216 * 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
1217 * 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
1218 * libev, in which cases the memory fences become nops. 1627 * libev, in which cases the memory fences become nops.
1219 * alternatively, you can remove this #error and link against libpthread, 1628 * alternatively, you can remove this #error and link against libpthread,
1220 * which will then provide the memory fences. 1629 * which will then provide the memory fences.
1221 */ 1630 */
1222# error "memory fences not defined for your architecture, please report" 1631# error "memory fences not defined for your architecture, please report"
… …
1226# define ECB_MEMORY_FENCE do { } while (0) 1635# define ECB_MEMORY_FENCE do { } while (0)
1227# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1228# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1229#endif 1638#endif
1230 1639
1231#define expect_false(cond) ecb_expect_false (cond)
1232#define expect_true(cond) ecb_expect_true (cond)
1233#define noinline ecb_noinline
1234
1235#define inline_size ecb_inline 1640#define inline_size ecb_inline
1236 1641
1237#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
1238# define inline_speed ecb_inline 1643# define inline_speed ecb_inline
1239#else 1644#else
1240# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
1241#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 && !defined __OPTIMIZE_SIZE__
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/*****************************************************************************/
1242 1713
1243#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1244 1715
1245#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
1246# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
1247#else 1718#else
1248# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1249#endif 1720#endif
1250 1721
1251#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
1252#define EMPTY2(a,b) /* used to suppress some warnings */
1253 1723
1254typedef ev_watcher *W; 1724typedef ev_watcher *W;
1255typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
1256typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
1257 1727
… …
1282# include "ev_win32.c" 1752# include "ev_win32.c"
1283#endif 1753#endif
1284 1754
1285/*****************************************************************************/ 1755/*****************************************************************************/
1286 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1287/* define a suitable floor function (only used by periodics atm) */ 1761/* define a suitable floor function (only used by periodics atm) */
1288 1762
1289#if EV_USE_FLOOR 1763#if EV_USE_FLOOR
1290# include <math.h> 1764# include <math.h>
1291# define ev_floor(v) floor (v) 1765# define ev_floor(v) floor (v)
1292#else 1766#else
1293 1767
1294#include <float.h> 1768#include <float.h>
1295 1769
1296/* 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
1297static ev_tstamp noinline 1772static ev_tstamp
1298ev_floor (ev_tstamp v) 1773ev_floor (ev_tstamp v)
1299{ 1774{
1300 /* the choice of shift factor is not terribly important */ 1775 /* the choice of shift factor is not terribly important */
1301#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1303#else 1778#else
1304 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1305#endif 1780#endif
1306 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
1307 /* argument too large for an unsigned long? */ 1790 /* argument too large for an unsigned long? then reduce it */
1308 if (expect_false (v >= shift)) 1791 if (ecb_expect_false (v >= shift))
1309 { 1792 {
1310 ev_tstamp f; 1793 ev_tstamp f;
1311 1794
1312 if (v == v - 1.) 1795 if (v == v - 1.)
1313 return v; /* very large number */ 1796 return v; /* very large numbers are assumed to be integer */
1314 1797
1315 f = shift * ev_floor (v * (1. / shift)); 1798 f = shift * ev_floor (v * (1. / shift));
1316 return f + ev_floor (v - f); 1799 return f + ev_floor (v - f);
1317 } 1800 }
1318 1801
1319 /* special treatment for negative args? */
1320 if (expect_false (v < 0.))
1321 {
1322 ev_tstamp f = -ev_floor (-v);
1323
1324 return f - (f == v ? 0 : 1);
1325 }
1326
1327 /* fits into an unsigned long */ 1802 /* fits into an unsigned long */
1328 return (unsigned long)v; 1803 return (unsigned long)v;
1329} 1804}
1330 1805
1331#endif 1806#endif
… …
1334 1809
1335#ifdef __linux 1810#ifdef __linux
1336# include <sys/utsname.h> 1811# include <sys/utsname.h>
1337#endif 1812#endif
1338 1813
1339static unsigned int noinline ecb_cold 1814ecb_noinline ecb_cold
1815static unsigned int
1340ev_linux_version (void) 1816ev_linux_version (void)
1341{ 1817{
1342#ifdef __linux 1818#ifdef __linux
1343 unsigned int v = 0; 1819 unsigned int v = 0;
1344 struct utsname buf; 1820 struct utsname buf;
… …
1373} 1849}
1374 1850
1375/*****************************************************************************/ 1851/*****************************************************************************/
1376 1852
1377#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
1378static void noinline ecb_cold 1854ecb_noinline ecb_cold
1855static void
1379ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
1380{ 1857{
1381 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
1382} 1859}
1383#endif 1860#endif
1384 1861
1385static void (*syserr_cb)(const char *msg) EV_THROW; 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1386 1863
1387void ecb_cold 1864ecb_cold
1865void
1388ev_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
1389{ 1867{
1390 syserr_cb = cb; 1868 syserr_cb = cb;
1391} 1869}
1392 1870
1393static void noinline ecb_cold 1871ecb_noinline ecb_cold
1872static void
1394ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
1395{ 1874{
1396 if (!msg) 1875 if (!msg)
1397 msg = "(libev) system error"; 1876 msg = "(libev) system error";
1398 1877
… …
1411 abort (); 1890 abort ();
1412 } 1891 }
1413} 1892}
1414 1893
1415static void * 1894static void *
1416ev_realloc_emul (void *ptr, long size) EV_THROW 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1417{ 1896{
1418 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
1419 * 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
1420 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1421 * recently, also (at least) fedora and debian started breaking it, 1900 * recently, also (at least) fedora and debian started breaking it,
… …
1427 1906
1428 free (ptr); 1907 free (ptr);
1429 return 0; 1908 return 0;
1430} 1909}
1431 1910
1432static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1433 1912
1434void ecb_cold 1913ecb_cold
1914void
1435ev_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
1436{ 1916{
1437 alloc = cb; 1917 alloc = cb;
1438} 1918}
1439 1919
1440inline_speed void * 1920inline_speed void *
… …
1467typedef struct 1947typedef struct
1468{ 1948{
1469 WL head; 1949 WL head;
1470 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
1471 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) */
1472 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 */
1473 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
1474#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
1475 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
1476#endif 1956#endif
1477#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1478 SOCKET handle; 1958 SOCKET handle;
… …
1532 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
1533 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 */
1534 2014
1535#else 2015#else
1536 2016
1537 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 */
1538 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
1539 #include "ev_vars.h" 2019 #include "ev_vars.h"
1540 #undef VAR 2020 #undef VAR
1541 2021
1542 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
1543 2023
1544#endif 2024#endif
1545 2025
1546#if EV_FEATURE_API 2026#if EV_FEATURE_API
1547# 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)
1548# 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)
1549# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
1550#else 2030#else
1551# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
1552# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
1553# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1557 2037
1558/*****************************************************************************/ 2038/*****************************************************************************/
1559 2039
1560#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
1561ev_tstamp 2041ev_tstamp
1562ev_time (void) EV_THROW 2042ev_time (void) EV_NOEXCEPT
1563{ 2043{
1564#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
1565 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
1566 { 2046 {
1567 struct timespec ts; 2047 struct timespec ts;
1568 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
1569 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
1570 } 2050 }
1571#endif 2051#endif
1572 2052
2053 {
1573 struct timeval tv; 2054 struct timeval tv;
1574 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
1575 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
1576} 2058}
1577#endif 2059#endif
1578 2060
1579inline_size ev_tstamp 2061inline_size ev_tstamp
1580get_clock (void) 2062get_clock (void)
1581{ 2063{
1582#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
1583 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
1584 { 2066 {
1585 struct timespec ts; 2067 struct timespec ts;
1586 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
1587 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
1588 } 2070 }
1589#endif 2071#endif
1590 2072
1591 return ev_time (); 2073 return ev_time ();
1592} 2074}
1593 2075
1594#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
1595ev_tstamp 2077ev_tstamp
1596ev_now (EV_P) EV_THROW 2078ev_now (EV_P) EV_NOEXCEPT
1597{ 2079{
1598 return ev_rt_now; 2080 return ev_rt_now;
1599} 2081}
1600#endif 2082#endif
1601 2083
1602void 2084void
1603ev_sleep (ev_tstamp delay) EV_THROW 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1604{ 2086{
1605 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
1606 { 2088 {
1607#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
1608 struct timespec ts; 2090 struct timespec ts;
1609 2091
1610 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
1611 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
1612#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) */
1613 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1614#else 2098#else
1615 struct timeval tv; 2099 struct timeval tv;
1616 2100
1617 /* 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 */
1618 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1648 } 2132 }
1649 2133
1650 return ncur; 2134 return ncur;
1651} 2135}
1652 2136
1653static void * noinline ecb_cold 2137ecb_noinline ecb_cold
2138static void *
1654array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
1655{ 2140{
1656 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
1657 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
1658} 2143}
1659 2144
2145#define array_needsize_noinit(base,offset,count)
2146
1660#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
1661 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1662 2149
1663#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
1664 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
1665 { \ 2152 { \
1666 int ecb_unused ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
1667 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
1668 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
1669 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
1670 } 2157 }
1671 2158
1672#if 0 2159#if 0
1673#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
1674 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1683 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
1684 2171
1685/*****************************************************************************/ 2172/*****************************************************************************/
1686 2173
1687/* dummy callback for pending events */ 2174/* dummy callback for pending events */
1688static void noinline 2175ecb_noinline
2176static void
1689pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
1690{ 2178{
1691} 2179}
1692 2180
1693void noinline 2181ecb_noinline
2182void
1694ev_feed_event (EV_P_ void *w, int revents) EV_THROW 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1695{ 2184{
1696 W w_ = (W)w; 2185 W w_ = (W)w;
1697 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
1698 2187
1699 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
1700 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
1701 else 2190 else
1702 { 2191 {
1703 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
1704 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1705 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
1706 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
1707 } 2196 }
1708 2197
1709 pendingpri = NUMPRI - 1; 2198 pendingpri = NUMPRI - 1;
1710} 2199}
1711 2200
1712inline_speed void 2201inline_speed void
1713feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
1714{ 2203{
1715 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1716 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
1717} 2206}
1718 2207
1719inline_size void 2208inline_size void
1720feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
1755inline_speed void 2244inline_speed void
1756fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
1757{ 2246{
1758 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
1759 2248
1760 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
1761 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
1762} 2251}
1763 2252
1764void 2253void
1765ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1766{ 2255{
1767 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
1768 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
1769} 2258}
1770 2259
… …
1807 ev_io *w; 2296 ev_io *w;
1808 2297
1809 unsigned char o_events = anfd->events; 2298 unsigned char o_events = anfd->events;
1810 unsigned char o_reify = anfd->reify; 2299 unsigned char o_reify = anfd->reify;
1811 2300
1812 anfd->reify = 0; 2301 anfd->reify = 0;
1813 2302
1814 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1815 { 2304 {
1816 anfd->events = 0; 2305 anfd->events = 0;
1817 2306
1818 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1819 anfd->events |= (unsigned char)w->events; 2308 anfd->events |= (unsigned char)w->events;
… …
1828 2317
1829 fdchangecnt = 0; 2318 fdchangecnt = 0;
1830} 2319}
1831 2320
1832/* something about the given fd changed */ 2321/* something about the given fd changed */
1833inline_size void 2322inline_size
2323void
1834fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
1835{ 2325{
1836 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
1837 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
1838 2328
1839 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
1840 { 2330 {
1841 ++fdchangecnt; 2331 ++fdchangecnt;
1842 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1843 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
1844 } 2334 }
1845} 2335}
1846 2336
1847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1848inline_speed void ecb_cold 2338inline_speed ecb_cold void
1849fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
1850{ 2340{
1851 ev_io *w; 2341 ev_io *w;
1852 2342
1853 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
1856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1857 } 2347 }
1858} 2348}
1859 2349
1860/* check whether the given fd is actually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
1861inline_size int ecb_cold 2351inline_size ecb_cold int
1862fd_valid (int fd) 2352fd_valid (int fd)
1863{ 2353{
1864#ifdef _WIN32 2354#ifdef _WIN32
1865 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1866#else 2356#else
1867 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
1868#endif 2358#endif
1869} 2359}
1870 2360
1871/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
1872static void noinline ecb_cold 2362ecb_noinline ecb_cold
2363static void
1873fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
1874{ 2365{
1875 int fd; 2366 int fd;
1876 2367
1877 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
1879 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
1880 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
1881} 2372}
1882 2373
1883/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
1884static void noinline ecb_cold 2375ecb_noinline ecb_cold
2376static void
1885fd_enomem (EV_P) 2377fd_enomem (EV_P)
1886{ 2378{
1887 int fd; 2379 int fd;
1888 2380
1889 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
… …
1893 break; 2385 break;
1894 } 2386 }
1895} 2387}
1896 2388
1897/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
1898static void noinline 2390ecb_noinline
2391static void
1899fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
1900{ 2393{
1901 int fd; 2394 int fd;
1902 2395
1903 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
… …
1956 ev_tstamp minat; 2449 ev_tstamp minat;
1957 ANHE *minpos; 2450 ANHE *minpos;
1958 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1959 2452
1960 /* find minimum child */ 2453 /* find minimum child */
1961 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
1962 { 2455 {
1963 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1964 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1965 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2458 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1966 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1967 } 2460 }
1968 else if (pos < E) 2461 else if (pos < E)
1969 { 2462 {
1970 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1971 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2464 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1972 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2465 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1973 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1974 } 2467 }
1975 else 2468 else
1976 break; 2469 break;
1977 2470
1978 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
1986 2479
1987 heap [k] = he; 2480 heap [k] = he;
1988 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
1989} 2482}
1990 2483
1991#else /* 4HEAP */ 2484#else /* not 4HEAP */
1992 2485
1993#define HEAP0 1 2486#define HEAP0 1
1994#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
1995#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
1996 2489
… …
2084 2577
2085/*****************************************************************************/ 2578/*****************************************************************************/
2086 2579
2087#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2088 2581
2089static void noinline ecb_cold 2582ecb_noinline ecb_cold
2583static void
2090evpipe_init (EV_P) 2584evpipe_init (EV_P)
2091{ 2585{
2092 if (!ev_is_active (&pipe_w)) 2586 if (!ev_is_active (&pipe_w))
2093 { 2587 {
2094 int fds [2]; 2588 int fds [2];
… …
2134inline_speed void 2628inline_speed void
2135evpipe_write (EV_P_ EV_ATOMIC_T *flag) 2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2136{ 2630{
2137 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ 2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2138 2632
2139 if (expect_true (*flag)) 2633 if (ecb_expect_true (*flag))
2140 return; 2634 return;
2141 2635
2142 *flag = 1; 2636 *flag = 1;
2143 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ 2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2144 2638
… …
2165#endif 2659#endif
2166 { 2660 {
2167#ifdef _WIN32 2661#ifdef _WIN32
2168 WSABUF buf; 2662 WSABUF buf;
2169 DWORD sent; 2663 DWORD sent;
2170 buf.buf = &buf; 2664 buf.buf = (char *)&buf;
2171 buf.len = 1; 2665 buf.len = 1;
2172 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2173#else 2667#else
2174 write (evpipe [1], &(evpipe [1]), 1); 2668 write (evpipe [1], &(evpipe [1]), 1);
2175#endif 2669#endif
… …
2221 sig_pending = 0; 2715 sig_pending = 0;
2222 2716
2223 ECB_MEMORY_FENCE; 2717 ECB_MEMORY_FENCE;
2224 2718
2225 for (i = EV_NSIG - 1; i--; ) 2719 for (i = EV_NSIG - 1; i--; )
2226 if (expect_false (signals [i].pending)) 2720 if (ecb_expect_false (signals [i].pending))
2227 ev_feed_signal_event (EV_A_ i + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
2228 } 2722 }
2229#endif 2723#endif
2230 2724
2231#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
… …
2247} 2741}
2248 2742
2249/*****************************************************************************/ 2743/*****************************************************************************/
2250 2744
2251void 2745void
2252ev_feed_signal (int signum) EV_THROW 2746ev_feed_signal (int signum) EV_NOEXCEPT
2253{ 2747{
2254#if EV_MULTIPLICITY 2748#if EV_MULTIPLICITY
2255 EV_P; 2749 EV_P;
2256 ECB_MEMORY_FENCE_ACQUIRE; 2750 ECB_MEMORY_FENCE_ACQUIRE;
2257 EV_A = signals [signum - 1].loop; 2751 EV_A = signals [signum - 1].loop;
… …
2272#endif 2766#endif
2273 2767
2274 ev_feed_signal (signum); 2768 ev_feed_signal (signum);
2275} 2769}
2276 2770
2277void noinline 2771ecb_noinline
2772void
2278ev_feed_signal_event (EV_P_ int signum) EV_THROW 2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
2279{ 2774{
2280 WL w; 2775 WL w;
2281 2776
2282 if (expect_false (signum <= 0 || signum >= EV_NSIG)) 2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
2283 return; 2778 return;
2284 2779
2285 --signum; 2780 --signum;
2286 2781
2287#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
2288 /* it is permissible to try to feed a signal to the wrong loop */ 2783 /* it is permissible to try to feed a signal to the wrong loop */
2289 /* or, likely more useful, feeding a signal nobody is waiting for */ 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
2290 2785
2291 if (expect_false (signals [signum].loop != EV_A)) 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
2292 return; 2787 return;
2293#endif 2788#endif
2294 2789
2295 signals [signum].pending = 0; 2790 signals [signum].pending = 0;
2296 ECB_MEMORY_FENCE_RELEASE; 2791 ECB_MEMORY_FENCE_RELEASE;
… …
2380 2875
2381#endif 2876#endif
2382 2877
2383/*****************************************************************************/ 2878/*****************************************************************************/
2384 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&timerfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2385#if EV_USE_IOCP 2932#if EV_USE_IOCP
2386# include "ev_iocp.c" 2933# include "ev_iocp.c"
2387#endif 2934#endif
2388#if EV_USE_PORT 2935#if EV_USE_PORT
2389# include "ev_port.c" 2936# include "ev_port.c"
… …
2392# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
2393#endif 2940#endif
2394#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
2395# include "ev_epoll.c" 2942# include "ev_epoll.c"
2396#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
2397#if EV_USE_POLL 2950#if EV_USE_POLL
2398# include "ev_poll.c" 2951# include "ev_poll.c"
2399#endif 2952#endif
2400#if EV_USE_SELECT 2953#if EV_USE_SELECT
2401# include "ev_select.c" 2954# include "ev_select.c"
2402#endif 2955#endif
2403 2956
2404int ecb_cold 2957ecb_cold int
2405ev_version_major (void) EV_THROW 2958ev_version_major (void) EV_NOEXCEPT
2406{ 2959{
2407 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
2408} 2961}
2409 2962
2410int ecb_cold 2963ecb_cold int
2411ev_version_minor (void) EV_THROW 2964ev_version_minor (void) EV_NOEXCEPT
2412{ 2965{
2413 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
2414} 2967}
2415 2968
2416/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
2417int inline_size ecb_cold 2970inline_size ecb_cold int
2418enable_secure (void) 2971enable_secure (void)
2419{ 2972{
2420#ifdef _WIN32 2973#ifdef _WIN32
2421 return 0; 2974 return 0;
2422#else 2975#else
2423 return getuid () != geteuid () 2976 return getuid () != geteuid ()
2424 || getgid () != getegid (); 2977 || getgid () != getegid ();
2425#endif 2978#endif
2426} 2979}
2427 2980
2428unsigned int ecb_cold 2981ecb_cold
2982unsigned int
2429ev_supported_backends (void) EV_THROW 2983ev_supported_backends (void) EV_NOEXCEPT
2430{ 2984{
2431 unsigned int flags = 0; 2985 unsigned int flags = 0;
2432 2986
2433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2434 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2435 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
2436 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
2437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
2438 2994
2439 return flags; 2995 return flags;
2440} 2996}
2441 2997
2442unsigned int ecb_cold 2998ecb_cold
2999unsigned int
2443ev_recommended_backends (void) EV_THROW 3000ev_recommended_backends (void) EV_NOEXCEPT
2444{ 3001{
2445 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
2446 3003
2447#ifndef __NetBSD__ 3004#ifndef __NetBSD__
2448 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
2456#endif 3013#endif
2457#ifdef __FreeBSD__ 3014#ifdef __FreeBSD__
2458 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2459#endif 3016#endif
2460 3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
3026
2461 return flags; 3027 return flags;
2462} 3028}
2463 3029
2464unsigned int ecb_cold 3030ecb_cold
3031unsigned int
2465ev_embeddable_backends (void) EV_THROW 3032ev_embeddable_backends (void) EV_NOEXCEPT
2466{ 3033{
2467 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2468 3035
2469 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2470 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2471 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
2472 3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
3046
2473 return flags; 3047 return flags;
2474} 3048}
2475 3049
2476unsigned int 3050unsigned int
2477ev_backend (EV_P) EV_THROW 3051ev_backend (EV_P) EV_NOEXCEPT
2478{ 3052{
2479 return backend; 3053 return backend;
2480} 3054}
2481 3055
2482#if EV_FEATURE_API 3056#if EV_FEATURE_API
2483unsigned int 3057unsigned int
2484ev_iteration (EV_P) EV_THROW 3058ev_iteration (EV_P) EV_NOEXCEPT
2485{ 3059{
2486 return loop_count; 3060 return loop_count;
2487} 3061}
2488 3062
2489unsigned int 3063unsigned int
2490ev_depth (EV_P) EV_THROW 3064ev_depth (EV_P) EV_NOEXCEPT
2491{ 3065{
2492 return loop_depth; 3066 return loop_depth;
2493} 3067}
2494 3068
2495void 3069void
2496ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2497{ 3071{
2498 io_blocktime = interval; 3072 io_blocktime = interval;
2499} 3073}
2500 3074
2501void 3075void
2502ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2503{ 3077{
2504 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
2505} 3079}
2506 3080
2507void 3081void
2508ev_set_userdata (EV_P_ void *data) EV_THROW 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2509{ 3083{
2510 userdata = data; 3084 userdata = data;
2511} 3085}
2512 3086
2513void * 3087void *
2514ev_userdata (EV_P) EV_THROW 3088ev_userdata (EV_P) EV_NOEXCEPT
2515{ 3089{
2516 return userdata; 3090 return userdata;
2517} 3091}
2518 3092
2519void 3093void
2520ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2521{ 3095{
2522 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
2523} 3097}
2524 3098
2525void 3099void
2526ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW 3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2527{ 3101{
2528 release_cb = release; 3102 release_cb = release;
2529 acquire_cb = acquire; 3103 acquire_cb = acquire;
2530} 3104}
2531#endif 3105#endif
2532 3106
2533/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
2534static void noinline ecb_cold 3108ecb_noinline ecb_cold
3109static void
2535loop_init (EV_P_ unsigned int flags) EV_THROW 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2536{ 3111{
2537 if (!backend) 3112 if (!backend)
2538 { 3113 {
2539 origflags = flags; 3114 origflags = flags;
2540 3115
… …
2593 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2594#endif 3169#endif
2595#if EV_USE_SIGNALFD 3170#if EV_USE_SIGNALFD
2596 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2597#endif 3172#endif
3173#if EV_USE_TIMERFD
3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3175#endif
2598 3176
2599 if (!(flags & EVBACKEND_MASK)) 3177 if (!(flags & EVBACKEND_MASK))
2600 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
2601 3179
2602#if EV_USE_IOCP 3180#if EV_USE_IOCP
2603 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2604#endif 3182#endif
2605#if EV_USE_PORT 3183#if EV_USE_PORT
2606 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2607#endif 3185#endif
2608#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
2609 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2610#endif 3194#endif
2611#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
2612 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2613#endif 3197#endif
2614#if EV_USE_POLL 3198#if EV_USE_POLL
2615 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2616#endif 3200#endif
2617#if EV_USE_SELECT 3201#if EV_USE_SELECT
2618 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2619#endif 3203#endif
2620 3204
2621 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
2622 3206
2623#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2626#endif 3210#endif
2627 } 3211 }
2628} 3212}
2629 3213
2630/* free up a loop structure */ 3214/* free up a loop structure */
2631void ecb_cold 3215ecb_cold
3216void
2632ev_loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
2633{ 3218{
2634 int i; 3219 int i;
2635 3220
2636#if EV_MULTIPLICITY 3221#if EV_MULTIPLICITY
… …
2639 return; 3224 return;
2640#endif 3225#endif
2641 3226
2642#if EV_CLEANUP_ENABLE 3227#if EV_CLEANUP_ENABLE
2643 /* queue cleanup watchers (and execute them) */ 3228 /* queue cleanup watchers (and execute them) */
2644 if (expect_false (cleanupcnt)) 3229 if (ecb_expect_false (cleanupcnt))
2645 { 3230 {
2646 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2647 EV_INVOKE_PENDING; 3232 EV_INVOKE_PENDING;
2648 } 3233 }
2649#endif 3234#endif
… …
2668#if EV_USE_SIGNALFD 3253#if EV_USE_SIGNALFD
2669 if (ev_is_active (&sigfd_w)) 3254 if (ev_is_active (&sigfd_w))
2670 close (sigfd); 3255 close (sigfd);
2671#endif 3256#endif
2672 3257
3258#if EV_USE_TIMERFD
3259 if (ev_is_active (&timerfd_w))
3260 close (timerfd);
3261#endif
3262
2673#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
2674 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
2675 close (fs_fd); 3265 close (fs_fd);
2676#endif 3266#endif
2677 3267
2678 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
2679 close (backend_fd); 3269 close (backend_fd);
2680 3270
2681#if EV_USE_IOCP 3271#if EV_USE_IOCP
2682 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2683#endif 3273#endif
2684#if EV_USE_PORT 3274#if EV_USE_PORT
2685 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2686#endif 3276#endif
2687#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
2688 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2689#endif 3285#endif
2690#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
2691 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2692#endif 3288#endif
2693#if EV_USE_POLL 3289#if EV_USE_POLL
2694 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2695#endif 3291#endif
2696#if EV_USE_SELECT 3292#if EV_USE_SELECT
2697 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2698#endif 3294#endif
2699 3295
2700 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
2701 { 3297 {
2702 array_free (pending, [i]); 3298 array_free (pending, [i]);
… …
2744 3340
2745inline_size void 3341inline_size void
2746loop_fork (EV_P) 3342loop_fork (EV_P)
2747{ 3343{
2748#if EV_USE_PORT 3344#if EV_USE_PORT
2749 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2750#endif 3346#endif
2751#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
2752 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2753#endif 3355#endif
2754#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
2755 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2756#endif 3358#endif
2757#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
2758 infy_fork (EV_A); 3360 infy_fork (EV_A);
2759#endif 3361#endif
2760 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
2761#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2762 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
2763 { 3386 {
2764 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2765 3388
2766 ev_ref (EV_A); 3389 ev_ref (EV_A);
2767 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
2768 3391
2769 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
2770 EV_WIN32_CLOSE_FD (evpipe [0]); 3393 EV_WIN32_CLOSE_FD (evpipe [0]);
2771 3394
2772 evpipe_init (EV_A); 3395 evpipe_init (EV_A);
2773 /* iterate over everything, in case we missed something before */ 3396 /* iterate over everything, in case we missed something before */
2774 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3398 }
3399 #endif
2775 } 3400 }
2776#endif
2777 3401
2778 postfork = 0; 3402 postfork = 0;
2779} 3403}
2780 3404
2781#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
2782 3406
3407ecb_cold
2783struct ev_loop * ecb_cold 3408struct ev_loop *
2784ev_loop_new (unsigned int flags) EV_THROW 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
2785{ 3410{
2786 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2787 3412
2788 memset (EV_A, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
2789 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
… …
2796} 3421}
2797 3422
2798#endif /* multiplicity */ 3423#endif /* multiplicity */
2799 3424
2800#if EV_VERIFY 3425#if EV_VERIFY
2801static void noinline ecb_cold 3426ecb_noinline ecb_cold
3427static void
2802verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
2803{ 3429{
2804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2805 3431
2806 if (w->pending) 3432 if (w->pending)
2807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2808} 3434}
2809 3435
2810static void noinline ecb_cold 3436ecb_noinline ecb_cold
3437static void
2811verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
2812{ 3439{
2813 int i; 3440 int i;
2814 3441
2815 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2820 3447
2821 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2822 } 3449 }
2823} 3450}
2824 3451
2825static void noinline ecb_cold 3452ecb_noinline ecb_cold
3453static void
2826array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
2827{ 3455{
2828 while (cnt--) 3456 while (cnt--)
2829 { 3457 {
2830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2833} 3461}
2834#endif 3462#endif
2835 3463
2836#if EV_FEATURE_API 3464#if EV_FEATURE_API
2837void ecb_cold 3465void ecb_cold
2838ev_verify (EV_P) EV_THROW 3466ev_verify (EV_P) EV_NOEXCEPT
2839{ 3467{
2840#if EV_VERIFY 3468#if EV_VERIFY
2841 int i; 3469 int i;
2842 WL w, w2; 3470 WL w, w2;
2843 3471
… …
2919#endif 3547#endif
2920} 3548}
2921#endif 3549#endif
2922 3550
2923#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
2924struct ev_loop * ecb_cold 3553struct ev_loop *
2925#else 3554#else
2926int 3555int
2927#endif 3556#endif
2928ev_default_loop (unsigned int flags) EV_THROW 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
2929{ 3558{
2930 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
2931 { 3560 {
2932#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
2933 EV_P = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2952 3581
2953 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
2954} 3583}
2955 3584
2956void 3585void
2957ev_loop_fork (EV_P) EV_THROW 3586ev_loop_fork (EV_P) EV_NOEXCEPT
2958{ 3587{
2959 postfork = 1; 3588 postfork = 1;
2960} 3589}
2961 3590
2962/*****************************************************************************/ 3591/*****************************************************************************/
… …
2966{ 3595{
2967 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
2968} 3597}
2969 3598
2970unsigned int 3599unsigned int
2971ev_pending_count (EV_P) EV_THROW 3600ev_pending_count (EV_P) EV_NOEXCEPT
2972{ 3601{
2973 int pri; 3602 int pri;
2974 unsigned int count = 0; 3603 unsigned int count = 0;
2975 3604
2976 for (pri = NUMPRI; pri--; ) 3605 for (pri = NUMPRI; pri--; )
2977 count += pendingcnt [pri]; 3606 count += pendingcnt [pri];
2978 3607
2979 return count; 3608 return count;
2980} 3609}
2981 3610
2982void noinline 3611ecb_noinline
3612void
2983ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
2984{ 3614{
2985 pendingpri = NUMPRI; 3615 pendingpri = NUMPRI;
2986 3616
2987 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ 3617 do
2988 { 3618 {
2989 --pendingpri; 3619 --pendingpri;
2990 3620
3621 /* pendingpri possibly gets modified in the inner loop */
2991 while (pendingcnt [pendingpri]) 3622 while (pendingcnt [pendingpri])
2992 { 3623 {
2993 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2994 3625
2995 p->w->pending = 0; 3626 p->w->pending = 0;
2996 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
2997 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
2998 } 3629 }
2999 } 3630 }
3631 while (pendingpri);
3000} 3632}
3001 3633
3002#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
3003/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
3004/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
3005inline_size void 3637inline_size void
3006idle_reify (EV_P) 3638idle_reify (EV_P)
3007{ 3639{
3008 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
3009 { 3641 {
3010 int pri; 3642 int pri;
3011 3643
3012 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
3013 { 3645 {
… …
3043 { 3675 {
3044 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
3045 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
3046 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
3047 3679
3048 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
3049 3681
3050 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
3051 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
3052 } 3684 }
3053 else 3685 else
… …
3062 } 3694 }
3063} 3695}
3064 3696
3065#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
3066 3698
3067static void noinline 3699ecb_noinline
3700static void
3068periodic_recalc (EV_P_ ev_periodic *w) 3701periodic_recalc (EV_P_ ev_periodic *w)
3069{ 3702{
3070 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3703 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3071 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3072 3705
… …
3074 while (at <= ev_rt_now) 3707 while (at <= ev_rt_now)
3075 { 3708 {
3076 ev_tstamp nat = at + w->interval; 3709 ev_tstamp nat = at + w->interval;
3077 3710
3078 /* when resolution fails us, we use ev_rt_now */ 3711 /* when resolution fails us, we use ev_rt_now */
3079 if (expect_false (nat == at)) 3712 if (ecb_expect_false (nat == at))
3080 { 3713 {
3081 at = ev_rt_now; 3714 at = ev_rt_now;
3082 break; 3715 break;
3083 } 3716 }
3084 3717
… …
3130 } 3763 }
3131} 3764}
3132 3765
3133/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
3134/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
3135static void noinline ecb_cold 3768ecb_noinline ecb_cold
3769static void
3136periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
3137{ 3771{
3138 int i; 3772 int i;
3139 3773
3140 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
3153 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
3154} 3788}
3155#endif 3789#endif
3156 3790
3157/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
3158static void noinline ecb_cold 3792ecb_noinline ecb_cold
3793static void
3159timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
3160{ 3795{
3161 int i; 3796 int i;
3162 3797
3163 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
3172/* also detect if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
3173inline_speed void 3808inline_speed void
3174time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
3175{ 3810{
3176#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
3177 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
3178 { 3813 {
3179 int i; 3814 int i;
3180 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
3181 3816
3182 mn_now = get_clock (); 3817 mn_now = get_clock ();
3183 3818
3184 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
3185 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
3186 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
3187 { 3822 {
3188 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
3189 return; 3824 return;
3190 } 3825 }
3191 3826
… …
3205 ev_tstamp diff; 3840 ev_tstamp diff;
3206 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
3207 3842
3208 diff = odiff - rtmn_diff; 3843 diff = odiff - rtmn_diff;
3209 3844
3210 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
3211 return; /* all is well */ 3846 return; /* all is well */
3212 3847
3213 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
3214 mn_now = get_clock (); 3849 mn_now = get_clock ();
3215 now_floor = mn_now; 3850 now_floor = mn_now;
… …
3224 else 3859 else
3225#endif 3860#endif
3226 { 3861 {
3227 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
3228 3863
3229 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
3230 { 3865 {
3231 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* adjust timers. this is easy, as the offset is the same for all of them */
3232 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
3233#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
3234 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
3257#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
3258 ev_verify (EV_A); 3893 ev_verify (EV_A);
3259#endif 3894#endif
3260 3895
3261#ifndef _WIN32 3896#ifndef _WIN32
3262 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
3263 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
3264 { 3899 {
3265 curpid = getpid (); 3900 curpid = getpid ();
3266 postfork = 1; 3901 postfork = 1;
3267 } 3902 }
3268#endif 3903#endif
3269 3904
3270#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
3271 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
3272 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
3273 if (forkcnt) 3908 if (forkcnt)
3274 { 3909 {
3275 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
3276 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
3277 } 3912 }
3278#endif 3913#endif
3279 3914
3280#if EV_PREPARE_ENABLE 3915#if EV_PREPARE_ENABLE
3281 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
3282 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
3283 { 3918 {
3284 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
3285 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
3286 } 3921 }
3287#endif 3922#endif
3288 3923
3289 if (expect_false (loop_done)) 3924 if (ecb_expect_false (loop_done))
3290 break; 3925 break;
3291 3926
3292 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
3293 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
3294 loop_fork (EV_A); 3929 loop_fork (EV_A);
3295 3930
3296 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
3297 fd_reify (EV_A); 3932 fd_reify (EV_A);
3298 3933
… …
3303 3938
3304 /* remember old timestamp for io_blocktime calculation */ 3939 /* remember old timestamp for io_blocktime calculation */
3305 ev_tstamp prev_mn_now = mn_now; 3940 ev_tstamp prev_mn_now = mn_now;
3306 3941
3307 /* update time to cancel out callback processing overhead */ 3942 /* update time to cancel out callback processing overhead */
3308 time_update (EV_A_ 1e100); 3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3309 3944
3310 /* from now on, we want a pipe-wake-up */ 3945 /* from now on, we want a pipe-wake-up */
3311 pipe_write_wanted = 1; 3946 pipe_write_wanted = 1;
3312 3947
3313 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3314 3949
3315 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3316 { 3951 {
3317 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
3318 3953
3319 if (timercnt) 3954 if (timercnt)
3320 { 3955 {
3321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3322 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
… …
3329 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
3330 } 3965 }
3331#endif 3966#endif
3332 3967
3333 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
3334 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
3335 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
3336 3971
3337 /* at this point, we NEED to wait, so we have to ensure */ 3972 /* now there are two more special cases left, either we have
3338 /* to pass a minimum nonzero value to the backend */ 3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3339 if (expect_false (waittime < backend_mintime)) 3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3340 waittime = backend_mintime; 3980 : backend_mintime;
3341 3981
3342 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
3343 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
3344 { 3984 {
3345 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3346 3986
3347 if (sleeptime > waittime - backend_mintime) 3987 if (sleeptime > waittime - backend_mintime)
3348 sleeptime = waittime - backend_mintime; 3988 sleeptime = waittime - backend_mintime;
3349 3989
3350 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3351 { 3991 {
3352 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
3353 waittime -= sleeptime; 3993 waittime -= sleeptime;
3354 } 3994 }
3355 } 3995 }
… …
3369 { 4009 {
3370 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4010 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3371 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3372 } 4012 }
3373 4013
3374
3375 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
3376 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
3377 } 4016 }
3378 4017
3379 /* queue pending timers and reschedule them */ 4018 /* queue pending timers and reschedule them */
… …
3387 idle_reify (EV_A); 4026 idle_reify (EV_A);
3388#endif 4027#endif
3389 4028
3390#if EV_CHECK_ENABLE 4029#if EV_CHECK_ENABLE
3391 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
3392 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
3393 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3394#endif 4033#endif
3395 4034
3396 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
3397 } 4036 }
3398 while (expect_true ( 4037 while (ecb_expect_true (
3399 activecnt 4038 activecnt
3400 && !loop_done 4039 && !loop_done
3401 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3402 )); 4041 ));
3403 4042
… …
3410 4049
3411 return activecnt; 4050 return activecnt;
3412} 4051}
3413 4052
3414void 4053void
3415ev_break (EV_P_ int how) EV_THROW 4054ev_break (EV_P_ int how) EV_NOEXCEPT
3416{ 4055{
3417 loop_done = how; 4056 loop_done = how;
3418} 4057}
3419 4058
3420void 4059void
3421ev_ref (EV_P) EV_THROW 4060ev_ref (EV_P) EV_NOEXCEPT
3422{ 4061{
3423 ++activecnt; 4062 ++activecnt;
3424} 4063}
3425 4064
3426void 4065void
3427ev_unref (EV_P) EV_THROW 4066ev_unref (EV_P) EV_NOEXCEPT
3428{ 4067{
3429 --activecnt; 4068 --activecnt;
3430} 4069}
3431 4070
3432void 4071void
3433ev_now_update (EV_P) EV_THROW 4072ev_now_update (EV_P) EV_NOEXCEPT
3434{ 4073{
3435 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
3436} 4075}
3437 4076
3438void 4077void
3439ev_suspend (EV_P) EV_THROW 4078ev_suspend (EV_P) EV_NOEXCEPT
3440{ 4079{
3441 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
3442} 4081}
3443 4082
3444void 4083void
3445ev_resume (EV_P) EV_THROW 4084ev_resume (EV_P) EV_NOEXCEPT
3446{ 4085{
3447 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
3448 4087
3449 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
3450 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3467inline_size void 4106inline_size void
3468wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
3469{ 4108{
3470 while (*head) 4109 while (*head)
3471 { 4110 {
3472 if (expect_true (*head == elem)) 4111 if (ecb_expect_true (*head == elem))
3473 { 4112 {
3474 *head = elem->next; 4113 *head = elem->next;
3475 break; 4114 break;
3476 } 4115 }
3477 4116
… …
3489 w->pending = 0; 4128 w->pending = 0;
3490 } 4129 }
3491} 4130}
3492 4131
3493int 4132int
3494ev_clear_pending (EV_P_ void *w) EV_THROW 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3495{ 4134{
3496 W w_ = (W)w; 4135 W w_ = (W)w;
3497 int pending = w_->pending; 4136 int pending = w_->pending;
3498 4137
3499 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
3500 { 4139 {
3501 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3502 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
3503 w_->pending = 0; 4142 w_->pending = 0;
3504 return p->events; 4143 return p->events;
… …
3531 w->active = 0; 4170 w->active = 0;
3532} 4171}
3533 4172
3534/*****************************************************************************/ 4173/*****************************************************************************/
3535 4174
3536void noinline 4175ecb_noinline
4176void
3537ev_io_start (EV_P_ ev_io *w) EV_THROW 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3538{ 4178{
3539 int fd = w->fd; 4179 int fd = w->fd;
3540 4180
3541 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
3542 return; 4182 return;
3543 4183
3544 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3545 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3546 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
3547 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
3548 4191
3549 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
3550 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3551 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
3552 4195
3553 /* common bug, apparently */ 4196 /* common bug, apparently */
3554 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); 4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3555 4198
… …
3557 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
3558 4201
3559 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
3560} 4203}
3561 4204
3562void noinline 4205ecb_noinline
4206void
3563ev_io_stop (EV_P_ ev_io *w) EV_THROW 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3564{ 4208{
3565 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
3567 return; 4211 return;
3568 4212
3569 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3570 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
3571 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3572 4219
3573 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
3574 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
3575 4222
3576 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3577 4224
3578 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
3579} 4226}
3580 4227
3581void noinline 4228ecb_noinline
4229void
3582ev_timer_start (EV_P_ ev_timer *w) EV_THROW 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3583{ 4231{
3584 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
3585 return; 4233 return;
3586 4234
3587 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
3588 4236
3589 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3590 4238
3591 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
3592 4240
3593 ++timercnt; 4241 ++timercnt;
3594 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3595 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3596 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
3597 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
3598 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
3599 4247
3600 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3601 4249
3602 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3603} 4251}
3604 4252
3605void noinline 4253ecb_noinline
4254void
3606ev_timer_stop (EV_P_ ev_timer *w) EV_THROW 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3607{ 4256{
3608 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
3609 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
3610 return; 4259 return;
3611 4260
3612 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
3613 4262
3614 { 4263 {
… …
3616 4265
3617 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3618 4267
3619 --timercnt; 4268 --timercnt;
3620 4269
3621 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
3622 { 4271 {
3623 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
3624 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
3625 } 4274 }
3626 } 4275 }
… …
3630 ev_stop (EV_A_ (W)w); 4279 ev_stop (EV_A_ (W)w);
3631 4280
3632 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
3633} 4282}
3634 4283
3635void noinline 4284ecb_noinline
4285void
3636ev_timer_again (EV_P_ ev_timer *w) EV_THROW 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3637{ 4287{
3638 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3639 4289
3640 clear_pending (EV_A_ (W)w); 4290 clear_pending (EV_A_ (W)w);
3641 4291
… …
3658 4308
3659 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
3660} 4310}
3661 4311
3662ev_tstamp 4312ev_tstamp
3663ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW 4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3664{ 4314{
3665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3666} 4316}
3667 4317
3668#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
3669void noinline 4319ecb_noinline
4320void
3670ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3671{ 4322{
3672 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
3673 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
3674 4330
3675 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
3676 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3677 else if (w->interval) 4333 else if (w->interval)
3678 { 4334 {
… …
3684 4340
3685 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
3686 4342
3687 ++periodiccnt; 4343 ++periodiccnt;
3688 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3689 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3690 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3691 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
3692 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
3693 4349
3694 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3695 4351
3696 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3697} 4353}
3698 4354
3699void noinline 4355ecb_noinline
4356void
3700ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3701{ 4358{
3702 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
3703 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
3704 return; 4361 return;
3705 4362
3706 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
3707 4364
3708 { 4365 {
… …
3710 4367
3711 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3712 4369
3713 --periodiccnt; 4370 --periodiccnt;
3714 4371
3715 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
3716 { 4373 {
3717 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
3718 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
3719 } 4376 }
3720 } 4377 }
… …
3722 ev_stop (EV_A_ (W)w); 4379 ev_stop (EV_A_ (W)w);
3723 4380
3724 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
3725} 4382}
3726 4383
3727void noinline 4384ecb_noinline
4385void
3728ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3729{ 4387{
3730 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
3731 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
3732 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
3733} 4391}
… …
3737# define SA_RESTART 0 4395# define SA_RESTART 0
3738#endif 4396#endif
3739 4397
3740#if EV_SIGNAL_ENABLE 4398#if EV_SIGNAL_ENABLE
3741 4399
3742void noinline 4400ecb_noinline
4401void
3743ev_signal_start (EV_P_ ev_signal *w) EV_THROW 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3744{ 4403{
3745 if (expect_false (ev_is_active (w))) 4404 if (ecb_expect_false (ev_is_active (w)))
3746 return; 4405 return;
3747 4406
3748 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3749 4408
3750#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
… …
3819 } 4478 }
3820 4479
3821 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
3822} 4481}
3823 4482
3824void noinline 4483ecb_noinline
4484void
3825ev_signal_stop (EV_P_ ev_signal *w) EV_THROW 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3826{ 4486{
3827 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3828 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
3829 return; 4489 return;
3830 4490
3831 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3832 4492
3833 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3861#endif 4521#endif
3862 4522
3863#if EV_CHILD_ENABLE 4523#if EV_CHILD_ENABLE
3864 4524
3865void 4525void
3866ev_child_start (EV_P_ ev_child *w) EV_THROW 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3867{ 4527{
3868#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
3869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3870#endif 4530#endif
3871 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
3872 return; 4532 return;
3873 4533
3874 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
3875 4535
3876 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
… …
3878 4538
3879 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
3880} 4540}
3881 4541
3882void 4542void
3883ev_child_stop (EV_P_ ev_child *w) EV_THROW 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3884{ 4544{
3885 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
3886 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
3887 return; 4547 return;
3888 4548
3889 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
3890 4550
3891 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3905 4565
3906#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
3907#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3908#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
3909 4569
3910static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3911 4571
3912#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
3913 4573
3914/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3916 4576
3917static void noinline 4577ecb_noinline
4578static void
3918infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
3919{ 4580{
3920 w->wd = inotify_add_watch (fs_fd, w->path, 4581 w->wd = inotify_add_watch (fs_fd, w->path,
3921 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY 4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3922 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO 4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
… …
3986 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3987 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
3988 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3989} 4650}
3990 4651
3991static void noinline 4652ecb_noinline
4653static void
3992infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
3993{ 4655{
3994 int slot; 4656 int slot;
3995 int wd = w->wd; 4657 int wd = w->wd;
3996 4658
… …
4003 4665
4004 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
4005 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
4006} 4668}
4007 4669
4008static void noinline 4670ecb_noinline
4671static void
4009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
4010{ 4673{
4011 if (slot < 0) 4674 if (slot < 0)
4012 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
4013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
4049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4050 ofs += sizeof (struct inotify_event) + ev->len; 4713 ofs += sizeof (struct inotify_event) + ev->len;
4051 } 4714 }
4052} 4715}
4053 4716
4054inline_size void ecb_cold 4717inline_size ecb_cold
4718void
4055ev_check_2625 (EV_P) 4719ev_check_2625 (EV_P)
4056{ 4720{
4057 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
4058 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
4059 */ 4723 */
… …
4149#else 4813#else
4150# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
4151#endif 4815#endif
4152 4816
4153void 4817void
4154ev_stat_stat (EV_P_ ev_stat *w) EV_THROW 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
4155{ 4819{
4156 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
4157 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
4158 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
4159 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
4160} 4824}
4161 4825
4162static void noinline 4826ecb_noinline
4827static void
4163stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
4164{ 4829{
4165 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
4166 4831
4167 ev_statdata prev = w->attr; 4832 ev_statdata prev = w->attr;
… …
4198 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
4199 } 4864 }
4200} 4865}
4201 4866
4202void 4867void
4203ev_stat_start (EV_P_ ev_stat *w) EV_THROW 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
4204{ 4869{
4205 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
4206 return; 4871 return;
4207 4872
4208 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
4209 4874
4210 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
4229 4894
4230 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
4231} 4896}
4232 4897
4233void 4898void
4234ev_stat_stop (EV_P_ ev_stat *w) EV_THROW 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
4235{ 4900{
4236 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
4237 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
4238 return; 4903 return;
4239 4904
4240 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
4241 4906
4242#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
… …
4255} 4920}
4256#endif 4921#endif
4257 4922
4258#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
4259void 4924void
4260ev_idle_start (EV_P_ ev_idle *w) EV_THROW 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
4261{ 4926{
4262 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
4263 return; 4928 return;
4264 4929
4265 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
4266 4931
4267 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
4270 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
4271 4936
4272 ++idleall; 4937 ++idleall;
4273 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
4274 4939
4275 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
4276 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
4277 } 4942 }
4278 4943
4279 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4280} 4945}
4281 4946
4282void 4947void
4283ev_idle_stop (EV_P_ ev_idle *w) EV_THROW 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
4284{ 4949{
4285 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
4286 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
4287 return; 4952 return;
4288 4953
4289 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
4290 4955
4291 { 4956 {
… …
4302} 4967}
4303#endif 4968#endif
4304 4969
4305#if EV_PREPARE_ENABLE 4970#if EV_PREPARE_ENABLE
4306void 4971void
4307ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
4308{ 4973{
4309 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
4310 return; 4975 return;
4311 4976
4312 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
4313 4978
4314 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
4315 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
4316 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
4317 4982
4318 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
4319} 4984}
4320 4985
4321void 4986void
4322ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4323{ 4988{
4324 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
4325 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
4326 return; 4991 return;
4327 4992
4328 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
4329 4994
4330 { 4995 {
… …
4340} 5005}
4341#endif 5006#endif
4342 5007
4343#if EV_CHECK_ENABLE 5008#if EV_CHECK_ENABLE
4344void 5009void
4345ev_check_start (EV_P_ ev_check *w) EV_THROW 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4346{ 5011{
4347 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
4348 return; 5013 return;
4349 5014
4350 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
4351 5016
4352 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
4353 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4354 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
4355 5020
4356 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
4357} 5022}
4358 5023
4359void 5024void
4360ev_check_stop (EV_P_ ev_check *w) EV_THROW 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4361{ 5026{
4362 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
4363 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
4364 return; 5029 return;
4365 5030
4366 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
4367 5032
4368 { 5033 {
… …
4377 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
4378} 5043}
4379#endif 5044#endif
4380 5045
4381#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
4382void noinline 5047ecb_noinline
5048void
4383ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4384{ 5050{
4385 ev_run (w->other, EVRUN_NOWAIT); 5051 ev_run (w->other, EVRUN_NOWAIT);
4386} 5052}
4387 5053
4388static void 5054static void
… …
4410 ev_run (EV_A_ EVRUN_NOWAIT); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
4411 } 5077 }
4412 } 5078 }
4413} 5079}
4414 5080
5081#if EV_FORK_ENABLE
4415static void 5082static void
4416embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5083embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4417{ 5084{
4418 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5085 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4419 5086
… …
4426 ev_run (EV_A_ EVRUN_NOWAIT); 5093 ev_run (EV_A_ EVRUN_NOWAIT);
4427 } 5094 }
4428 5095
4429 ev_embed_start (EV_A_ w); 5096 ev_embed_start (EV_A_ w);
4430} 5097}
5098#endif
4431 5099
4432#if 0 5100#if 0
4433static void 5101static void
4434embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5102embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4435{ 5103{
4436 ev_idle_stop (EV_A_ idle); 5104 ev_idle_stop (EV_A_ idle);
4437} 5105}
4438#endif 5106#endif
4439 5107
4440void 5108void
4441ev_embed_start (EV_P_ ev_embed *w) EV_THROW 5109ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4442{ 5110{
4443 if (expect_false (ev_is_active (w))) 5111 if (ecb_expect_false (ev_is_active (w)))
4444 return; 5112 return;
4445 5113
4446 { 5114 {
4447 EV_P = w->other; 5115 EV_P = w->other;
4448 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5116 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4456 5124
4457 ev_prepare_init (&w->prepare, embed_prepare_cb); 5125 ev_prepare_init (&w->prepare, embed_prepare_cb);
4458 ev_set_priority (&w->prepare, EV_MINPRI); 5126 ev_set_priority (&w->prepare, EV_MINPRI);
4459 ev_prepare_start (EV_A_ &w->prepare); 5127 ev_prepare_start (EV_A_ &w->prepare);
4460 5128
5129#if EV_FORK_ENABLE
4461 ev_fork_init (&w->fork, embed_fork_cb); 5130 ev_fork_init (&w->fork, embed_fork_cb);
4462 ev_fork_start (EV_A_ &w->fork); 5131 ev_fork_start (EV_A_ &w->fork);
5132#endif
4463 5133
4464 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5134 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4465 5135
4466 ev_start (EV_A_ (W)w, 1); 5136 ev_start (EV_A_ (W)w, 1);
4467 5137
4468 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
4469} 5139}
4470 5140
4471void 5141void
4472ev_embed_stop (EV_P_ ev_embed *w) EV_THROW 5142ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4473{ 5143{
4474 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4475 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4476 return; 5146 return;
4477 5147
4478 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4479 5149
4480 ev_io_stop (EV_A_ &w->io); 5150 ev_io_stop (EV_A_ &w->io);
4481 ev_prepare_stop (EV_A_ &w->prepare); 5151 ev_prepare_stop (EV_A_ &w->prepare);
5152#if EV_FORK_ENABLE
4482 ev_fork_stop (EV_A_ &w->fork); 5153 ev_fork_stop (EV_A_ &w->fork);
5154#endif
4483 5155
4484 ev_stop (EV_A_ (W)w); 5156 ev_stop (EV_A_ (W)w);
4485 5157
4486 EV_FREQUENT_CHECK; 5158 EV_FREQUENT_CHECK;
4487} 5159}
4488#endif 5160#endif
4489 5161
4490#if EV_FORK_ENABLE 5162#if EV_FORK_ENABLE
4491void 5163void
4492ev_fork_start (EV_P_ ev_fork *w) EV_THROW 5164ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4493{ 5165{
4494 if (expect_false (ev_is_active (w))) 5166 if (ecb_expect_false (ev_is_active (w)))
4495 return; 5167 return;
4496 5168
4497 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
4498 5170
4499 ev_start (EV_A_ (W)w, ++forkcnt); 5171 ev_start (EV_A_ (W)w, ++forkcnt);
4500 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5172 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4501 forks [forkcnt - 1] = w; 5173 forks [forkcnt - 1] = w;
4502 5174
4503 EV_FREQUENT_CHECK; 5175 EV_FREQUENT_CHECK;
4504} 5176}
4505 5177
4506void 5178void
4507ev_fork_stop (EV_P_ ev_fork *w) EV_THROW 5179ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4508{ 5180{
4509 clear_pending (EV_A_ (W)w); 5181 clear_pending (EV_A_ (W)w);
4510 if (expect_false (!ev_is_active (w))) 5182 if (ecb_expect_false (!ev_is_active (w)))
4511 return; 5183 return;
4512 5184
4513 EV_FREQUENT_CHECK; 5185 EV_FREQUENT_CHECK;
4514 5186
4515 { 5187 {
… …
4525} 5197}
4526#endif 5198#endif
4527 5199
4528#if EV_CLEANUP_ENABLE 5200#if EV_CLEANUP_ENABLE
4529void 5201void
4530ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW 5202ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4531{ 5203{
4532 if (expect_false (ev_is_active (w))) 5204 if (ecb_expect_false (ev_is_active (w)))
4533 return; 5205 return;
4534 5206
4535 EV_FREQUENT_CHECK; 5207 EV_FREQUENT_CHECK;
4536 5208
4537 ev_start (EV_A_ (W)w, ++cleanupcnt); 5209 ev_start (EV_A_ (W)w, ++cleanupcnt);
4538 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5210 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4539 cleanups [cleanupcnt - 1] = w; 5211 cleanups [cleanupcnt - 1] = w;
4540 5212
4541 /* cleanup watchers should never keep a refcount on the loop */ 5213 /* cleanup watchers should never keep a refcount on the loop */
4542 ev_unref (EV_A); 5214 ev_unref (EV_A);
4543 EV_FREQUENT_CHECK; 5215 EV_FREQUENT_CHECK;
4544} 5216}
4545 5217
4546void 5218void
4547ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW 5219ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4548{ 5220{
4549 clear_pending (EV_A_ (W)w); 5221 clear_pending (EV_A_ (W)w);
4550 if (expect_false (!ev_is_active (w))) 5222 if (ecb_expect_false (!ev_is_active (w)))
4551 return; 5223 return;
4552 5224
4553 EV_FREQUENT_CHECK; 5225 EV_FREQUENT_CHECK;
4554 ev_ref (EV_A); 5226 ev_ref (EV_A);
4555 5227
… …
4566} 5238}
4567#endif 5239#endif
4568 5240
4569#if EV_ASYNC_ENABLE 5241#if EV_ASYNC_ENABLE
4570void 5242void
4571ev_async_start (EV_P_ ev_async *w) EV_THROW 5243ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4572{ 5244{
4573 if (expect_false (ev_is_active (w))) 5245 if (ecb_expect_false (ev_is_active (w)))
4574 return; 5246 return;
4575 5247
4576 w->sent = 0; 5248 w->sent = 0;
4577 5249
4578 evpipe_init (EV_A); 5250 evpipe_init (EV_A);
4579 5251
4580 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
4581 5253
4582 ev_start (EV_A_ (W)w, ++asynccnt); 5254 ev_start (EV_A_ (W)w, ++asynccnt);
4583 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4584 asyncs [asynccnt - 1] = w; 5256 asyncs [asynccnt - 1] = w;
4585 5257
4586 EV_FREQUENT_CHECK; 5258 EV_FREQUENT_CHECK;
4587} 5259}
4588 5260
4589void 5261void
4590ev_async_stop (EV_P_ ev_async *w) EV_THROW 5262ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4591{ 5263{
4592 clear_pending (EV_A_ (W)w); 5264 clear_pending (EV_A_ (W)w);
4593 if (expect_false (!ev_is_active (w))) 5265 if (ecb_expect_false (!ev_is_active (w)))
4594 return; 5266 return;
4595 5267
4596 EV_FREQUENT_CHECK; 5268 EV_FREQUENT_CHECK;
4597 5269
4598 { 5270 {
… …
4606 5278
4607 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
4608} 5280}
4609 5281
4610void 5282void
4611ev_async_send (EV_P_ ev_async *w) EV_THROW 5283ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4612{ 5284{
4613 w->sent = 1; 5285 w->sent = 1;
4614 evpipe_write (EV_A_ &async_pending); 5286 evpipe_write (EV_A_ &async_pending);
4615} 5287}
4616#endif 5288#endif
… …
4653 5325
4654 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4655} 5327}
4656 5328
4657void 5329void
4658ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW 5330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4659{ 5331{
4660 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4661
4662 if (expect_false (!once))
4663 {
4664 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4665 return;
4666 }
4667 5333
4668 once->cb = cb; 5334 once->cb = cb;
4669 once->arg = arg; 5335 once->arg = arg;
4670 5336
4671 ev_init (&once->io, once_cb_io); 5337 ev_init (&once->io, once_cb_io);
… …
4684} 5350}
4685 5351
4686/*****************************************************************************/ 5352/*****************************************************************************/
4687 5353
4688#if EV_WALK_ENABLE 5354#if EV_WALK_ENABLE
4689void ecb_cold 5355ecb_cold
5356void
4690ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW 5357ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4691{ 5358{
4692 int i, j; 5359 int i, j;
4693 ev_watcher_list *wl, *wn; 5360 ev_watcher_list *wl, *wn;
4694 5361
4695 if (types & (EV_IO | EV_EMBED)) 5362 if (types & (EV_IO | EV_EMBED))

Diff Legend

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