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Comparing libev/ev.c (file contents):
Revision 1.417 by root, Mon Apr 2 20:22:30 2012 UTC vs.
Revision 1.529 by root, Wed Mar 18 12:30:21 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
201# include <sys/wait.h> 238# include <sys/wait.h>
202# include <unistd.h> 239# include <unistd.h>
203#else 240#else
204# include <io.h> 241# include <io.h>
205# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
206# include <windows.h> 244# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
209# endif 247# endif
210# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
211#endif 249#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220 250
221/* 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 */
222 252
223/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG 254#if defined EV_NSIG
… …
240#elif defined SIGARRAYSIZE 270#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig 272#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 274#else
245# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 276#endif
250 277
251#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
253#endif 280#endif
254 281
255#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 285# else
259# 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
260# endif 296# endif
261#endif 297#endif
262 298
263#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
… …
306 342
307#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 344# define EV_USE_PORT 0
309#endif 345#endif
310 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
311#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 366# else
315# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
338# else 390# else
339# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
340# endif 392# endif
341#endif 393#endif
342 394
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
343#if 0 /* debugging */ 403#if 0 /* debugging */
344# define EV_VERIFY 3 404# define EV_VERIFY 3
345# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
346# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
347#endif 407#endif
… …
356 416
357#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 419#endif
360 420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 440# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
369# else 446# else
370# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
372# endif 449# endif
373#endif 450#endif
374 451
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 453
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
386#endif 457#endif
387 458
… …
391#endif 462#endif
392 463
393#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
394# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
467#endif
468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
396#endif 475#endif
397 476
398#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
399/* 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 */
400# if !defined _WIN32 && !defined __hpux 479# if !defined _WIN32 && !defined __hpux
401# 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
402# endif 506# endif
403#endif 507#endif
404 508
405#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
406# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
410# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
412# endif 516# endif
413#endif 517#endif
414 518
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif
418
419#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
420/* 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 */
421# include <stdint.h> 521# include <stdint.h>
422# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
423# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
424# endif 524# endif
425# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
431# endif 531# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif 533#endif
434 534
435#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
436/* 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 */
437# include <stdint.h> 537# include <stdint.h>
438# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
440# endif 540# endif
441# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
443# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
444# else 544# else
445# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
446# endif 546# endif
447# endif 547# endif
448EV_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);
449 549
450struct signalfd_siginfo 550struct signalfd_siginfo
451{ 551{
452 uint32_t ssi_signo; 552 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
454}; 554};
455#endif 555#endif
456 556
457/**/ 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/*****************************************************************************/
458 568
459#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 571#else
462# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
468 */ 578 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 581
472#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) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
474 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
477 603
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
480/* 606/*
481 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
482 * 608 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 611 * All rights reserved.
486 * 612 *
487 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
507 */ 644 */
508 645
509#ifndef ECB_H 646#ifndef ECB_H
510#define ECB_H 647#define ECB_H
511 648
512#ifdef _WIN32 649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#if defined (_WIN32) && !defined (__MINGW32__)
513 typedef signed char int8_t; 655 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
515 typedef signed short int16_t; 659 typedef signed short int16_t;
516 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
517 typedef signed int int32_t; 663 typedef signed int int32_t;
518 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
519 #if __GNUC__ 667 #if __GNUC__
520 typedef signed long long int64_t; 668 typedef signed long long int64_t;
521 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
525 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
526#else 685#else
527 #include <inttypes.h> 686 #include <inttypes.h>
687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
688 #define ECB_PTRSIZE 8
689 #else
690 #define ECB_PTRSIZE 4
691 #endif
692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
528#endif 712#endif
529 713
530/* many compilers define _GNUC_ to some versions but then only implement 714/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 715 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 717 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 718 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 719 * an issue with that they should have done it right in the first place.
536 */ 720 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ 721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
540 #else 723#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
543#endif 766#endif
544 767
545/*****************************************************************************/ 768/*****************************************************************************/
546 769
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 772
550#if ECB_NO_THREADS 773#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 774 #define ECB_NO_SMP 1
552#endif 775#endif
553 776
554#if ECB_NO_THREADS || ECB_NO_SMP 777#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
556#endif 788#endif
557 789
558#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 793 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__ 823 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__ 825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 842 #endif
585 #endif 843 #endif
586#endif 844#endif
587 845
588#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
589 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined _WIN32 874 #elif defined _WIN32
599 #include <WinNT.h> 875 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 878 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
606 #elif __xlC__ 883 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync () 884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
608 #endif 896 #endif
609#endif 897#endif
610 898
611#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
632 920
633#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif 923#endif
636 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
637/*****************************************************************************/ 929/*****************************************************************************/
638 930
639#define ECB_C99 (__STDC_VERSION__ >= 199901L) 931#if ECB_CPP
640
641#if __cplusplus
642 #define ecb_inline static inline 932 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
645#elif ECB_C99 935#elif ECB_C99
646 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
660 950
661#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
665 956
666#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
667 958
668#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
669 #define ecb_attribute(attrlist) __attribute__(attrlist) 960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr) 966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else 983#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
678#endif 985#endif
679 986
680/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5) 988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
682 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
683#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
684 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
685#endif 994#endif
686 995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
687#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__)) 1014#endif
1015
689#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
692 1031
693#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__)) 1033 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__)) 1034 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__)) 1035 #define ecb_cold ecb_attribute ((__cold__))
… …
708/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
711 1050
712/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4) 1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */ 1062 /* no popcountll */
721#else 1063#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
723 ecb_function_ int 1065 ecb_function_ ecb_const int
724 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
725 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
726 int r = 0; 1073 int r = 0;
727 1074
728 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
729 1076
730#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
740 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
742#endif 1089#endif
743 1090
744 return r; 1091 return r;
1092#endif
745 } 1093 }
746 1094
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
748 ecb_function_ int 1096 ecb_function_ ecb_const int
749 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
750 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
751 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
753 } 1107 }
754 1108
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
756 ecb_function_ int 1110 ecb_function_ ecb_const int
757 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
758 { 1112 {
759 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101; 1116 x *= 0x01010101;
763 1117
764 return x >> 24; 1118 return x >> 24;
765 } 1119 }
766 1120
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
768 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
769 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
770 int r = 0; 1129 int r = 0;
771 1130
772 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
777 1136
778 return r; 1137 return r;
1138#endif
779 } 1139 }
780 1140
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
782 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
783 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
784 int r = 0; 1149 int r = 0;
785 1150
786 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
787 1152
788 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
789 } 1155 }
790#endif 1156#endif
791 1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
794{ 1165{
795 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797} 1168}
798 1169
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
801{ 1172{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
806 1177
807 return x; 1178 return x;
808} 1179}
809 1180
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
812{ 1183{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
819 return x; 1190 return x;
820} 1191}
821 1192
822/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */ 1194/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
825ecb_function_ int 1196ecb_function_ ecb_const int
826ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
827{ 1198{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829} 1200}
830 1201
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
839 1210
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848 1219
849#if ECB_GCC_VERSION(4,3) 1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
851 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
853#else 1271#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
855 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
856 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
857 { 1275 {
858 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
859 } 1277 }
860 1278
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
862 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
863 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
864 { 1282 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 } 1284 }
867 1285
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
869 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
870 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
871 { 1289 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 } 1291 }
874#endif 1292#endif
875 1293
876#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
877 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
878#else 1296#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
881 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
882#endif 1300#endif
883 1301
884/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
886 1304
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
888ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
889ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
890{ 1308{
891 const uint32_t u = 0x11223344; 1309 /* the union code still generates code under pressure in gcc, */
892 return *(unsigned char *)&u; 1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
893} 1331}
894 1332
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
899 1409
900#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else 1412#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif 1414#endif
905 1415
906#if __cplusplus 1416#if ECB_CPP
907 template<typename T> 1417 template<typename T>
908 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
909 { 1419 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 } 1421 }
… …
928 } 1438 }
929#else 1439#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif 1441#endif
932 1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
933#endif 1749#endif
934 1750
935/* ECB.H END */ 1751/* ECB.H END */
936 1752
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
941 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
944 */ 1760 */
945# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
949# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif 1768#endif
953 1769
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
958#define inline_size ecb_inline 1770#define inline_size ecb_inline
959 1771
960#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
961# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
962#else 1774#else
963# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
964#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
965 1843
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967 1845
968#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
970#else 1848#else
971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif 1850#endif
973 1851
974#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
975#define EMPTY2(a,b) /* used to suppress some warnings */
976 1853
977typedef ev_watcher *W; 1854typedef ev_watcher *W;
978typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
979typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
980 1857
… …
1005# include "ev_win32.c" 1882# include "ev_win32.c"
1006#endif 1883#endif
1007 1884
1008/*****************************************************************************/ 1885/*****************************************************************************/
1009 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1010/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1011 1892
1012#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1013# include <math.h> 1894# include <math.h>
1014# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1015#else 1896#else
1016 1897
1017#include <float.h> 1898#include <float.h>
1018 1899
1019/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1020static ev_tstamp noinline 1902static ev_tstamp
1021ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1022{ 1904{
1023 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else 1908#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif 1910#endif
1029 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1030 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1031 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1032 { 1922 {
1033 ev_tstamp f; 1923 ev_tstamp f;
1034 1924
1035 if (v == v - 1.) 1925 if (v == v - 1.)
1036 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1037 1927
1038 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1040 } 1930 }
1041 1931
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1051 return (unsigned long)v; 1933 return (unsigned long)v;
1052} 1934}
1053 1935
1054#endif 1936#endif
… …
1057 1939
1058#ifdef __linux 1940#ifdef __linux
1059# include <sys/utsname.h> 1941# include <sys/utsname.h>
1060#endif 1942#endif
1061 1943
1062static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1063ev_linux_version (void) 1946ev_linux_version (void)
1064{ 1947{
1065#ifdef __linux 1948#ifdef __linux
1066 unsigned int v = 0; 1949 unsigned int v = 0;
1067 struct utsname buf; 1950 struct utsname buf;
… …
1096} 1979}
1097 1980
1098/*****************************************************************************/ 1981/*****************************************************************************/
1099 1982
1100#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1101static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1102ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1103{ 1987{
1104 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1105} 1989}
1106#endif 1990#endif
1107 1991
1108static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1109 1993
1110void ecb_cold 1994ecb_cold
1995void
1111ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1112{ 1997{
1113 syserr_cb = cb; 1998 syserr_cb = cb;
1114} 1999}
1115 2000
1116static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1117ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1118{ 2004{
1119 if (!msg) 2005 if (!msg)
1120 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1121 2007
… …
1134 abort (); 2020 abort ();
1135 } 2021 }
1136} 2022}
1137 2023
1138static void * 2024static void *
1139ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1140{ 2026{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
1144 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1145 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1146 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
1147 */ 2032 */
1148 2033
1149 if (size) 2034 if (size)
1150 return realloc (ptr, size); 2035 return realloc (ptr, size);
1151 2036
1152 free (ptr); 2037 free (ptr);
1153 return 0; 2038 return 0;
1154#endif
1155} 2039}
1156 2040
1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1158 2042
1159void ecb_cold 2043ecb_cold
2044void
1160ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1161{ 2046{
1162 alloc = cb; 2047 alloc = cb;
1163} 2048}
1164 2049
1165inline_speed void * 2050inline_speed void *
… …
1192typedef struct 2077typedef struct
1193{ 2078{
1194 WL head; 2079 WL head;
1195 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1198 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1199#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif 2086#endif
1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1203 SOCKET handle; 2088 SOCKET handle;
… …
1257 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1259 2144
1260#else 2145#else
1261 2146
1262 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1263 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1264 #include "ev_vars.h" 2149 #include "ev_vars.h"
1265 #undef VAR 2150 #undef VAR
1266 2151
1267 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1268 2153
1269#endif 2154#endif
1270 2155
1271#if EV_FEATURE_API 2156#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else 2160#else
1276# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1282 2167
1283/*****************************************************************************/ 2168/*****************************************************************************/
1284 2169
1285#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1286ev_tstamp 2171ev_tstamp
1287ev_time (void) 2172ev_time (void) EV_NOEXCEPT
1288{ 2173{
1289#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1290 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1291 { 2176 {
1292 struct timespec ts; 2177 struct timespec ts;
1293 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1294 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1295 } 2180 }
1296#endif 2181#endif
1297 2182
2183 {
1298 struct timeval tv; 2184 struct timeval tv;
1299 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1300 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1301} 2188}
1302#endif 2189#endif
1303 2190
1304inline_size ev_tstamp 2191inline_size ev_tstamp
1305get_clock (void) 2192get_clock (void)
1306{ 2193{
1307#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1308 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1309 { 2196 {
1310 struct timespec ts; 2197 struct timespec ts;
1311 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1312 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1313 } 2200 }
1314#endif 2201#endif
1315 2202
1316 return ev_time (); 2203 return ev_time ();
1317} 2204}
1318 2205
1319#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1320ev_tstamp 2207ev_tstamp
1321ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
1322{ 2209{
1323 return ev_rt_now; 2210 return ev_rt_now;
1324} 2211}
1325#endif 2212#endif
1326 2213
1327void 2214void
1328ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1329{ 2216{
1330 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1331 { 2218 {
1332#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1333 struct timespec ts; 2220 struct timespec ts;
1334 2221
1335 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1336 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1337#elif defined _WIN32 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1338 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1339#else 2228#else
1340 struct timeval tv; 2229 struct timeval tv;
1341 2230
1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1343 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1373 } 2262 }
1374 2263
1375 return ncur; 2264 return ncur;
1376} 2265}
1377 2266
1378static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1379array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1380{ 2270{
1381 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1382 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1383} 2273}
1384 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1385#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1387 2279
1388#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1389 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1390 { \ 2282 { \
1391 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1392 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1393 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1394 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1395 } 2287 }
1396 2288
1397#if 0 2289#if 0
1398#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1399 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1408 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1409 2301
1410/*****************************************************************************/ 2302/*****************************************************************************/
1411 2303
1412/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1413static void noinline 2305ecb_noinline
2306static void
1414pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1415{ 2308{
1416} 2309}
1417 2310
1418void noinline 2311ecb_noinline
2312void
1419ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1420{ 2314{
1421 W w_ = (W)w; 2315 W w_ = (W)w;
1422 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1423 2317
1424 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1425 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1426 else 2320 else
1427 { 2321 {
1428 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1429 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1430 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1431 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1432 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
1433} 2329}
1434 2330
1435inline_speed void 2331inline_speed void
1436feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1437{ 2333{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1439 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1440} 2336}
1441 2337
1442inline_size void 2338inline_size void
1443feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1478inline_speed void 2374inline_speed void
1479fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1480{ 2376{
1481 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1482 2378
1483 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1485} 2381}
1486 2382
1487void 2383void
1488ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1489{ 2385{
1490 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1491 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1492} 2388}
1493 2389
… …
1496inline_size void 2392inline_size void
1497fd_reify (EV_P) 2393fd_reify (EV_P)
1498{ 2394{
1499 int i; 2395 int i;
1500 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1503 { 2411 {
1504 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1506 2414
1507 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1521 } 2429 }
1522 } 2430 }
1523 } 2431 }
1524#endif 2432#endif
1525 2433
1526 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1527 { 2435 {
1528 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1529 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1530 ev_io *w; 2438 ev_io *w;
1531 2439
1532 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1534 2442
1535 anfd->reify = 0; 2443 anfd->reify = 0;
1536 2444
1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1538 { 2446 {
1539 anfd->events = 0; 2447 anfd->events = 0;
1540 2448
1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1542 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1547 2455
1548 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1549 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1550 } 2458 }
1551 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1552 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1553} 2468}
1554 2469
1555/* something about the given fd changed */ 2470/* something about the given fd changed */
1556inline_size void 2471inline_size
2472void
1557fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1558{ 2474{
1559 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1560 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
1561 2477
1562 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1563 { 2479 {
1564 ++fdchangecnt; 2480 ++fdchangecnt;
1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1566 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1567 } 2483 }
1568} 2484}
1569 2485
1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold 2487inline_speed ecb_cold void
1572fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1573{ 2489{
1574 ev_io *w; 2490 ev_io *w;
1575 2491
1576 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1580 } 2496 }
1581} 2497}
1582 2498
1583/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold 2500inline_size ecb_cold int
1585fd_valid (int fd) 2501fd_valid (int fd)
1586{ 2502{
1587#ifdef _WIN32 2503#ifdef _WIN32
1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1589#else 2505#else
1590 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1591#endif 2507#endif
1592} 2508}
1593 2509
1594/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1595static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1596fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1597{ 2514{
1598 int fd; 2515 int fd;
1599 2516
1600 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1602 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1603 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1604} 2521}
1605 2522
1606/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1607static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1608fd_enomem (EV_P) 2526fd_enomem (EV_P)
1609{ 2527{
1610 int fd; 2528 int fd;
1611 2529
1612 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1616 break; 2534 break;
1617 } 2535 }
1618} 2536}
1619 2537
1620/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1621static void noinline 2539ecb_noinline
2540static void
1622fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1623{ 2542{
1624 int fd; 2543 int fd;
1625 2544
1626 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1679 ev_tstamp minat; 2598 ev_tstamp minat;
1680 ANHE *minpos; 2599 ANHE *minpos;
1681 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1682 2601
1683 /* find minimum child */ 2602 /* find minimum child */
1684 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1685 { 2604 {
1686 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1688 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1689 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1690 } 2609 }
1691 else if (pos < E) 2610 else if (pos < E)
1692 { 2611 {
1693 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1694 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1695 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1696 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1697 } 2616 }
1698 else 2617 else
1699 break; 2618 break;
1700 2619
1701 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1709 2628
1710 heap [k] = he; 2629 heap [k] = he;
1711 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1712} 2631}
1713 2632
1714#else /* 4HEAP */ 2633#else /* not 4HEAP */
1715 2634
1716#define HEAP0 1 2635#define HEAP0 1
1717#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1718#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1719 2638
… …
1791 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1792} 2711}
1793 2712
1794/*****************************************************************************/ 2713/*****************************************************************************/
1795 2714
1796/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1797typedef struct 2716typedef struct
1798{ 2717{
1799 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1801 EV_P; 2720 EV_P;
… …
1807 2726
1808/*****************************************************************************/ 2727/*****************************************************************************/
1809 2728
1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1811 2730
1812static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
1813evpipe_init (EV_P) 2733evpipe_init (EV_P)
1814{ 2734{
1815 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1816 { 2736 {
2737 int fds [2];
2738
1817# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1820 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1821 2744
1822 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1823 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1824 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1825 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1826 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1827 } 2806 }
1828 else 2807 else
1829# endif 2808#endif
1830 { 2809 {
1831 while (pipe (evpipe)) 2810#ifdef _WIN32
1832 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1833 2812 DWORD sent;
1834 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1835 fd_intern (evpipe [1]); 2814 buf.len = 1;
1836 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1837 } 2816#else
1838
1839 ev_io_start (EV_A_ &pipe_w);
1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1841 }
1842}
1843
1844inline_speed void
1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1846{
1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1864 old_errno = errno; /* save errno because write will clobber it */
1865
1866#if EV_USE_EVENTFD
1867 if (evfd >= 0)
1868 {
1869 uint64_t counter = 1;
1870 write (evfd, &counter, sizeof (uint64_t));
1871 }
1872 else
1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1882 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1883 } 2819 }
1884 2820
1885 errno = old_errno; 2821 errno = old_errno;
1886 } 2822 }
1887} 2823}
… …
1894 int i; 2830 int i;
1895 2831
1896 if (revents & EV_READ) 2832 if (revents & EV_READ)
1897 { 2833 {
1898#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1899 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1900 { 2836 {
1901 uint64_t counter; 2837 uint64_t counter;
1902 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1903 } 2839 }
1904 else 2840 else
1905#endif 2841#endif
1906 { 2842 {
1907 char dummy; 2843 char dummy[4];
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1909 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
1910 } 2854 }
1911 } 2855 }
1912 2856
1913 pipe_write_skipped = 0; 2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1914 2860
1915#if EV_SIGNAL_ENABLE 2861#if EV_SIGNAL_ENABLE
1916 if (sig_pending) 2862 if (sig_pending)
1917 { 2863 {
1918 sig_pending = 0; 2864 sig_pending = 0;
1919 2865
2866 ECB_MEMORY_FENCE;
2867
1920 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1921 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1922 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1923 } 2871 }
1924#endif 2872#endif
1925 2873
1926#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1927 if (async_pending) 2875 if (async_pending)
1928 { 2876 {
1929 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1930 2880
1931 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1932 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1933 { 2883 {
1934 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1935 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1936 } 2887 }
1937 } 2888 }
1938#endif 2889#endif
1939} 2890}
1940 2891
1941/*****************************************************************************/ 2892/*****************************************************************************/
1942 2893
1943void 2894void
1944ev_feed_signal (int signum) 2895ev_feed_signal (int signum) EV_NOEXCEPT
1945{ 2896{
1946#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
1947 EV_P = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
1948 2901
1949 if (!EV_A) 2902 if (!EV_A)
1950 return; 2903 return;
1951#endif 2904#endif
1952 2905
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1; 2906 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending); 2907 evpipe_write (EV_A_ &sig_pending);
1958} 2908}
1959 2909
1960static void 2910static void
… …
1965#endif 2915#endif
1966 2916
1967 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
1968} 2918}
1969 2919
1970void noinline 2920ecb_noinline
2921void
1971ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1972{ 2923{
1973 WL w; 2924 WL w;
1974 2925
1975 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1976 return; 2927 return;
1977 2928
1978 --signum; 2929 --signum;
1979 2930
1980#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1981 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1982 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1983 2934
1984 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1985 return; 2936 return;
1986#endif 2937#endif
1987 2938
1988 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1989 2941
1990 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1992} 2944}
1993 2945
… …
2072 3024
2073#endif 3025#endif
2074 3026
2075/*****************************************************************************/ 3027/*****************************************************************************/
2076 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
2077#if EV_USE_IOCP 3080#if EV_USE_IOCP
2078# include "ev_iocp.c" 3081# include "ev_iocp.c"
2079#endif 3082#endif
2080#if EV_USE_PORT 3083#if EV_USE_PORT
2081# include "ev_port.c" 3084# include "ev_port.c"
… …
2084# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2085#endif 3088#endif
2086#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2087# include "ev_epoll.c" 3090# include "ev_epoll.c"
2088#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
2089#if EV_USE_POLL 3098#if EV_USE_POLL
2090# include "ev_poll.c" 3099# include "ev_poll.c"
2091#endif 3100#endif
2092#if EV_USE_SELECT 3101#if EV_USE_SELECT
2093# include "ev_select.c" 3102# include "ev_select.c"
2094#endif 3103#endif
2095 3104
2096int ecb_cold 3105ecb_cold int
2097ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
2098{ 3107{
2099 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2100} 3109}
2101 3110
2102int ecb_cold 3111ecb_cold int
2103ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
2104{ 3113{
2105 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2106} 3115}
2107 3116
2108/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
2109int inline_size ecb_cold 3118inline_size ecb_cold int
2110enable_secure (void) 3119enable_secure (void)
2111{ 3120{
2112#ifdef _WIN32 3121#ifdef _WIN32
2113 return 0; 3122 return 0;
2114#else 3123#else
2115 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2116 || getgid () != getegid (); 3125 || getgid () != getegid ();
2117#endif 3126#endif
2118} 3127}
2119 3128
2120unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2121ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
2122{ 3132{
2123 unsigned int flags = 0; 3133 unsigned int flags = 0;
2124 3134
2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2126 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2127 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2128 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2130 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2131 return flags; 3143 return flags;
2132} 3144}
2133 3145
2134unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2135ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
2136{ 3149{
2137 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2138 3151
2139#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2140 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2148#endif 3161#endif
2149#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif 3164#endif
2152 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: linuxaio is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
2153 return flags; 3175 return flags;
2154} 3176}
2155 3177
2156unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2157ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
2158{ 3181{
2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2160 3183
2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2163 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2164 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2165 return flags; 3190 return flags;
2166} 3191}
2167 3192
2168unsigned int 3193unsigned int
2169ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
2170{ 3195{
2171 return backend; 3196 return backend;
2172} 3197}
2173 3198
2174#if EV_FEATURE_API 3199#if EV_FEATURE_API
2175unsigned int 3200unsigned int
2176ev_iteration (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
2177{ 3202{
2178 return loop_count; 3203 return loop_count;
2179} 3204}
2180 3205
2181unsigned int 3206unsigned int
2182ev_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
2183{ 3208{
2184 return loop_depth; 3209 return loop_depth;
2185} 3210}
2186 3211
2187void 3212void
2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2189{ 3214{
2190 io_blocktime = interval; 3215 io_blocktime = interval;
2191} 3216}
2192 3217
2193void 3218void
2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2195{ 3220{
2196 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2197} 3222}
2198 3223
2199void 3224void
2200ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2201{ 3226{
2202 userdata = data; 3227 userdata = data;
2203} 3228}
2204 3229
2205void * 3230void *
2206ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
2207{ 3232{
2208 return userdata; 3233 return userdata;
2209} 3234}
2210 3235
2211void 3236void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2213{ 3238{
2214 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2215} 3240}
2216 3241
2217void 3242void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2219{ 3244{
2220 release_cb = release; 3245 release_cb = release;
2221 acquire_cb = acquire; 3246 acquire_cb = acquire;
2222} 3247}
2223#endif 3248#endif
2224 3249
2225/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2226static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2227loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2228{ 3254{
2229 if (!backend) 3255 if (!backend)
2230 { 3256 {
2231 origflags = flags; 3257 origflags = flags;
2232 3258
… …
2277#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
2278 async_pending = 0; 3304 async_pending = 0;
2279#endif 3305#endif
2280 pipe_write_skipped = 0; 3306 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0; 3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
2282#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif 3312#endif
2285#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2288 3319
2289 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2290 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2291 3322
2292#if EV_USE_IOCP 3323#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif 3325#endif
2295#if EV_USE_PORT 3326#if EV_USE_PORT
2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2297#endif 3328#endif
2298#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2300#endif 3337#endif
2301#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2302 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2303#endif 3340#endif
2304#if EV_USE_POLL 3341#if EV_USE_POLL
2305 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2306#endif 3343#endif
2307#if EV_USE_SELECT 3344#if EV_USE_SELECT
2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2309#endif 3346#endif
2310 3347
2311 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2312 3349
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2316#endif 3353#endif
2317 } 3354 }
2318} 3355}
2319 3356
2320/* free up a loop structure */ 3357/* free up a loop structure */
2321void ecb_cold 3358ecb_cold
3359void
2322ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2323{ 3361{
2324 int i; 3362 int i;
2325 3363
2326#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2329 return; 3367 return;
2330#endif 3368#endif
2331 3369
2332#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2335 { 3373 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2338 } 3376 }
2339#endif 3377#endif
2340 3378
2341#if EV_CHILD_ENABLE 3379#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev)) 3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2343 { 3381 {
2344 ev_ref (EV_A); /* child watcher */ 3382 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev); 3383 ev_signal_stop (EV_A_ &childev);
2346 } 3384 }
2347#endif 3385#endif
… …
2349 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
2350 { 3388 {
2351 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
2352 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
2353 3391
2354#if EV_USE_EVENTFD
2355 if (evfd >= 0)
2356 close (evfd);
2357#endif
2358
2359 if (evpipe [0] >= 0)
2360 {
2361 EV_WIN32_CLOSE_FD (evpipe [0]); 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2362 EV_WIN32_CLOSE_FD (evpipe [1]); 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2363 }
2364 } 3394 }
2365 3395
2366#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2368 close (sigfd); 3398 close (sigfd);
2369#endif 3399#endif
2370 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2371#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2372 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2373 close (fs_fd); 3408 close (fs_fd);
2374#endif 3409#endif
2375 3410
2376 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2377 close (backend_fd); 3412 close (backend_fd);
2378 3413
2379#if EV_USE_IOCP 3414#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif 3416#endif
2382#if EV_USE_PORT 3417#if EV_USE_PORT
2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2384#endif 3419#endif
2385#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2387#endif 3428#endif
2388#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2389 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2390#endif 3431#endif
2391#if EV_USE_POLL 3432#if EV_USE_POLL
2392 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2393#endif 3434#endif
2394#if EV_USE_SELECT 3435#if EV_USE_SELECT
2395 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2396#endif 3437#endif
2397 3438
2398 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2399 { 3440 {
2400 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
2442 3483
2443inline_size void 3484inline_size void
2444loop_fork (EV_P) 3485loop_fork (EV_P)
2445{ 3486{
2446#if EV_USE_PORT 3487#if EV_USE_PORT
2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2448#endif 3489#endif
2449#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
2450 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2451#endif 3498#endif
2452#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
2453 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2454#endif 3501#endif
2455#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2456 infy_fork (EV_A); 3503 infy_fork (EV_A);
2457#endif 3504#endif
2458 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2459 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
2460 { 3529 {
2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2462 3531
2463 ev_ref (EV_A); 3532 ev_ref (EV_A);
2464 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
2465 3534
2466#if EV_USE_EVENTFD
2467 if (evfd >= 0)
2468 close (evfd);
2469#endif
2470
2471 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
2472 {
2473 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
2474 EV_WIN32_CLOSE_FD (evpipe [1]); 3537
3538 evpipe_init (EV_A);
3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2475 } 3541 }
2476 3542 #endif
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2478 evpipe_init (EV_A);
2479 /* now iterate over everything, in case we missed something */
2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
2482 } 3543 }
2483 3544
2484 postfork = 0; 3545 postfork = 0;
2485} 3546}
2486 3547
2487#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2488 3549
3550ecb_cold
2489struct ev_loop * ecb_cold 3551struct ev_loop *
2490ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
2491{ 3553{
2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2493 3555
2494 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
2495 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
2502} 3564}
2503 3565
2504#endif /* multiplicity */ 3566#endif /* multiplicity */
2505 3567
2506#if EV_VERIFY 3568#if EV_VERIFY
2507static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
2508verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
2509{ 3572{
2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2511 3574
2512 if (w->pending) 3575 if (w->pending)
2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2514} 3577}
2515 3578
2516static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
2517verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
2518{ 3582{
2519 int i; 3583 int i;
2520 3584
2521 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2526 3590
2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2528 } 3592 }
2529} 3593}
2530 3594
2531static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
2532array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
2533{ 3598{
2534 while (cnt--) 3599 while (cnt--)
2535 { 3600 {
2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2539} 3604}
2540#endif 3605#endif
2541 3606
2542#if EV_FEATURE_API 3607#if EV_FEATURE_API
2543void ecb_cold 3608void ecb_cold
2544ev_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
2545{ 3610{
2546#if EV_VERIFY 3611#if EV_VERIFY
2547 int i; 3612 int i;
2548 WL w; 3613 WL w, w2;
2549 3614
2550 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
2551 3616
2552 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
2553 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2555 3620
2556 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
2557 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
2558 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
2559 { 3627 {
2560 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2563 } 3638 }
3639 }
2564 3640
2565 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
2566 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
2567 3643
2568#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
2614#endif 3690#endif
2615} 3691}
2616#endif 3692#endif
2617 3693
2618#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
2619struct ev_loop * ecb_cold 3696struct ev_loop *
2620#else 3697#else
2621int 3698int
2622#endif 3699#endif
2623ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
2624{ 3701{
2625 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
2626 { 3703 {
2627#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
2628 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2647 3724
2648 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2649} 3726}
2650 3727
2651void 3728void
2652ev_loop_fork (EV_P) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2653{ 3730{
2654 postfork = 1; /* must be in line with ev_default_fork */ 3731 postfork = 1;
2655} 3732}
2656 3733
2657/*****************************************************************************/ 3734/*****************************************************************************/
2658 3735
2659void 3736void
… …
2661{ 3738{
2662 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2663} 3740}
2664 3741
2665unsigned int 3742unsigned int
2666ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
2667{ 3744{
2668 int pri; 3745 int pri;
2669 unsigned int count = 0; 3746 unsigned int count = 0;
2670 3747
2671 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2673 3750
2674 return count; 3751 return count;
2675} 3752}
2676 3753
2677void noinline 3754ecb_noinline
3755void
2678ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2679{ 3757{
2680 int pri; 3758 pendingpri = NUMPRI;
2681 3759
2682 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
2683 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
2684 { 3766 {
2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2686 3768
2687 p->w->pending = 0; 3769 p->w->pending = 0;
2688 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2689 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2690 } 3772 }
3773 }
3774 while (pendingpri);
2691} 3775}
2692 3776
2693#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2694/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2696inline_size void 3780inline_size void
2697idle_reify (EV_P) 3781idle_reify (EV_P)
2698{ 3782{
2699 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2700 { 3784 {
2701 int pri; 3785 int pri;
2702 3786
2703 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
2704 { 3788 {
… …
2734 { 3818 {
2735 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2736 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2737 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2738 3822
2739 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2740 3824
2741 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2742 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2743 } 3827 }
2744 else 3828 else
… …
2753 } 3837 }
2754} 3838}
2755 3839
2756#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
2757 3841
2758static void noinline 3842ecb_noinline
3843static void
2759periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
2760{ 3845{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763 3848
… …
2765 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
2766 { 3851 {
2767 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
2768 3853
2769 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
2771 { 3856 {
2772 at = ev_rt_now; 3857 at = ev_rt_now;
2773 break; 3858 break;
2774 } 3859 }
2775 3860
… …
2785{ 3870{
2786 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2787 3872
2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2789 { 3874 {
2790 int feed_count = 0;
2791
2792 do 3875 do
2793 { 3876 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795 3878
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2823 } 3906 }
2824} 3907}
2825 3908
2826/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2828static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
2829periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2830{ 3914{
2831 int i; 3915 int i;
2832 3916
2833 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2846 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2847} 3931}
2848#endif 3932#endif
2849 3933
2850/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2851static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
2852timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2853{ 3938{
2854 int i; 3939 int i;
2855 3940
2856 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2865/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2866inline_speed void 3951inline_speed void
2867time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2868{ 3953{
2869#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2870 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2871 { 3956 {
2872 int i; 3957 int i;
2873 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2874 3959
2875 mn_now = get_clock (); 3960 mn_now = get_clock ();
2876 3961
2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2878 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2879 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2880 { 3965 {
2881 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2882 return; 3967 return;
2883 } 3968 }
2884 3969
… …
2898 ev_tstamp diff; 3983 ev_tstamp diff;
2899 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2900 3985
2901 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
2902 3987
2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2904 return; /* all is well */ 3989 return; /* all is well */
2905 3990
2906 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2907 mn_now = get_clock (); 3992 mn_now = get_clock ();
2908 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2917 else 4002 else
2918#endif 4003#endif
2919 { 4004 {
2920 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2921 4006
2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2923 { 4008 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2926#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2927 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2930 4015
2931 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2932 } 4017 }
2933} 4018}
2934 4019
2935void 4020int
2936ev_run (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2937{ 4022{
2938#if EV_FEATURE_API 4023#if EV_FEATURE_API
2939 ++loop_depth; 4024 ++loop_depth;
2940#endif 4025#endif
… …
2950#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2951 ev_verify (EV_A); 4036 ev_verify (EV_A);
2952#endif 4037#endif
2953 4038
2954#ifndef _WIN32 4039#ifndef _WIN32
2955 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2956 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2957 { 4042 {
2958 curpid = getpid (); 4043 curpid = getpid ();
2959 postfork = 1; 4044 postfork = 1;
2960 } 4045 }
2961#endif 4046#endif
2962 4047
2963#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2964 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2965 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2966 if (forkcnt) 4051 if (forkcnt)
2967 { 4052 {
2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2969 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2970 } 4055 }
2971#endif 4056#endif
2972 4057
2973#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
2974 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2975 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2976 { 4061 {
2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2978 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2979 } 4064 }
2980#endif 4065#endif
2981 4066
2982 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2983 break; 4068 break;
2984 4069
2985 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2986 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2987 loop_fork (EV_A); 4072 loop_fork (EV_A);
2988 4073
2989 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2990 fd_reify (EV_A); 4075 fd_reify (EV_A);
2991 4076
… …
2996 4081
2997 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
2999 4084
3000 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3002 4087
3003 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3005 4090
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007 4092
3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3009 { 4094 {
3010 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_TIMERFD
4098 /* sleep a lot longer when we can reliably detect timejumps */
4099 if (ecb_expect_true (timerfd >= 0))
4100 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4101#endif
4102#if !EV_PERIODIC_ENABLE
4103 /* without periodics but with monotonic clock there is no need */
4104 /* for any time jump detection, so sleep longer */
4105 if (ecb_expect_true (have_monotonic))
4106 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4107#endif
3011 4108
3012 if (timercnt) 4109 if (timercnt)
3013 { 4110 {
3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3015 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3022 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3023 } 4120 }
3024#endif 4121#endif
3025 4122
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3027 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3028 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3029 4126
3030 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3031 /* to pass a minimum nonzero value to the backend */ 4128 * already-expired timers, so we should not sleep, or we have timers
4129 * that expire very soon, in which case we need to wait for a minimum
4130 * amount of time for some event loop backends.
4131 */
3032 if (expect_false (waittime < backend_mintime)) 4132 if (ecb_expect_false (waittime < backend_mintime))
4133 waittime = waittime <= EV_TS_CONST (0.)
4134 ? EV_TS_CONST (0.)
3033 waittime = backend_mintime; 4135 : backend_mintime;
3034 4136
3035 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3036 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3037 { 4139 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039 4141
3040 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3042 4144
3043 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3044 { 4146 {
3045 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3046 waittime -= sleeptime; 4148 waittime -= sleeptime;
3047 } 4149 }
3048 } 4150 }
… …
3055 backend_poll (EV_A_ waittime); 4157 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4158 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057 4159
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4160 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059 4161
4162 ECB_MEMORY_FENCE_ACQUIRE;
3060 if (pipe_write_skipped) 4163 if (pipe_write_skipped)
3061 { 4164 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4165 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 } 4167 }
3065 4168
3066
3067 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3068 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3069 } 4171 }
3070 4172
3071 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3079 idle_reify (EV_A); 4181 idle_reify (EV_A);
3080#endif 4182#endif
3081 4183
3082#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3083 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3084 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif 4188#endif
3087 4189
3088 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3089 } 4191 }
3090 while (expect_true ( 4192 while (ecb_expect_true (
3091 activecnt 4193 activecnt
3092 && !loop_done 4194 && !loop_done
3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3094 )); 4196 ));
3095 4197
… …
3097 loop_done = EVBREAK_CANCEL; 4199 loop_done = EVBREAK_CANCEL;
3098 4200
3099#if EV_FEATURE_API 4201#if EV_FEATURE_API
3100 --loop_depth; 4202 --loop_depth;
3101#endif 4203#endif
4204
4205 return activecnt;
3102} 4206}
3103 4207
3104void 4208void
3105ev_break (EV_P_ int how) 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3106{ 4210{
3107 loop_done = how; 4211 loop_done = how;
3108} 4212}
3109 4213
3110void 4214void
3111ev_ref (EV_P) 4215ev_ref (EV_P) EV_NOEXCEPT
3112{ 4216{
3113 ++activecnt; 4217 ++activecnt;
3114} 4218}
3115 4219
3116void 4220void
3117ev_unref (EV_P) 4221ev_unref (EV_P) EV_NOEXCEPT
3118{ 4222{
3119 --activecnt; 4223 --activecnt;
3120} 4224}
3121 4225
3122void 4226void
3123ev_now_update (EV_P) 4227ev_now_update (EV_P) EV_NOEXCEPT
3124{ 4228{
3125 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3126} 4230}
3127 4231
3128void 4232void
3129ev_suspend (EV_P) 4233ev_suspend (EV_P) EV_NOEXCEPT
3130{ 4234{
3131 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3132} 4236}
3133 4237
3134void 4238void
3135ev_resume (EV_P) 4239ev_resume (EV_P) EV_NOEXCEPT
3136{ 4240{
3137 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3138 4242
3139 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3157inline_size void 4261inline_size void
3158wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3159{ 4263{
3160 while (*head) 4264 while (*head)
3161 { 4265 {
3162 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3163 { 4267 {
3164 *head = elem->next; 4268 *head = elem->next;
3165 break; 4269 break;
3166 } 4270 }
3167 4271
… …
3179 w->pending = 0; 4283 w->pending = 0;
3180 } 4284 }
3181} 4285}
3182 4286
3183int 4287int
3184ev_clear_pending (EV_P_ void *w) 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3185{ 4289{
3186 W w_ = (W)w; 4290 W w_ = (W)w;
3187 int pending = w_->pending; 4291 int pending = w_->pending;
3188 4292
3189 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3190 { 4294 {
3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3193 w_->pending = 0; 4297 w_->pending = 0;
3194 return p->events; 4298 return p->events;
… …
3221 w->active = 0; 4325 w->active = 0;
3222} 4326}
3223 4327
3224/*****************************************************************************/ 4328/*****************************************************************************/
3225 4329
3226void noinline 4330ecb_noinline
4331void
3227ev_io_start (EV_P_ ev_io *w) 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3228{ 4333{
3229 int fd = w->fd; 4334 int fd = w->fd;
3230 4335
3231 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3232 return; 4337 return;
3233 4338
3234 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4340 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3236 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3237 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3238 4346
3239 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3241 wlist_add (&anfds[fd].head, (WL)w); 4349 wlist_add (&anfds[fd].head, (WL)w);
4350
4351 /* common bug, apparently */
4352 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3242 4353
3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4354 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3244 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3245 4356
3246 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3247} 4358}
3248 4359
3249void noinline 4360ecb_noinline
4361void
3250ev_io_stop (EV_P_ ev_io *w) 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3251{ 4363{
3252 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3253 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3254 return; 4366 return;
3255 4367
3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4368 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3257 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3258 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3259 4374
3260 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3261 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3262 4377
3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3264 4379
3265 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3266} 4381}
3267 4382
3268void noinline 4383ecb_noinline
4384void
3269ev_timer_start (EV_P_ ev_timer *w) 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3270{ 4386{
3271 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3272 return; 4388 return;
3273 4389
3274 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3275 4391
3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4392 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3277 4393
3278 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3279 4395
3280 ++timercnt; 4396 ++timercnt;
3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3282 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3283 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3284 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3285 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3286 4402
3287 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3288 4404
3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4405 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3290} 4406}
3291 4407
3292void noinline 4408ecb_noinline
4409void
3293ev_timer_stop (EV_P_ ev_timer *w) 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3294{ 4411{
3295 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3296 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3297 return; 4414 return;
3298 4415
3299 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3300 4417
3301 { 4418 {
… …
3303 4420
3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4421 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3305 4422
3306 --timercnt; 4423 --timercnt;
3307 4424
3308 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3309 { 4426 {
3310 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3311 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3312 } 4429 }
3313 } 4430 }
… …
3317 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3318 4435
3319 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3320} 4437}
3321 4438
3322void noinline 4439ecb_noinline
4440void
3323ev_timer_again (EV_P_ ev_timer *w) 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3324{ 4442{
3325 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3326 4444
3327 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3328 4446
… …
3345 4463
3346 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3347} 4465}
3348 4466
3349ev_tstamp 4467ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w) 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3351{ 4469{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4470 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3353} 4471}
3354 4472
3355#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3356void noinline 4474ecb_noinline
4475void
3357ev_periodic_start (EV_P_ ev_periodic *w) 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3358{ 4477{
3359 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3360 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3361 4485
3362 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3364 else if (w->interval) 4488 else if (w->interval)
3365 { 4489 {
… …
3371 4495
3372 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3373 4497
3374 ++periodiccnt; 4498 ++periodiccnt;
3375 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3376 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3377 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3378 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3379 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3380 4504
3381 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3382 4506
3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4507 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3384} 4508}
3385 4509
3386void noinline 4510ecb_noinline
4511void
3387ev_periodic_stop (EV_P_ ev_periodic *w) 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3388{ 4513{
3389 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3390 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3391 return; 4516 return;
3392 4517
3393 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3394 4519
3395 { 4520 {
… …
3397 4522
3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4523 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3399 4524
3400 --periodiccnt; 4525 --periodiccnt;
3401 4526
3402 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
3403 { 4528 {
3404 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
3405 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
3406 } 4531 }
3407 } 4532 }
… …
3409 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3410 4535
3411 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3412} 4537}
3413 4538
3414void noinline 4539ecb_noinline
4540void
3415ev_periodic_again (EV_P_ ev_periodic *w) 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3416{ 4542{
3417 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
3418 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
3419 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
3420} 4546}
… …
3424# define SA_RESTART 0 4550# define SA_RESTART 0
3425#endif 4551#endif
3426 4552
3427#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
3428 4554
3429void noinline 4555ecb_noinline
4556void
3430ev_signal_start (EV_P_ ev_signal *w) 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3431{ 4558{
3432 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
3433 return; 4560 return;
3434 4561
3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4562 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3436 4563
3437#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops", 4565 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4566 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3440 4567
3441 signals [w->signum - 1].loop = EV_A; 4568 signals [w->signum - 1].loop = EV_A;
4569 ECB_MEMORY_FENCE_RELEASE;
3442#endif 4570#endif
3443 4571
3444 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3445 4573
3446#if EV_USE_SIGNALFD 4574#if EV_USE_SIGNALFD
… …
3505 } 4633 }
3506 4634
3507 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3508} 4636}
3509 4637
3510void noinline 4638ecb_noinline
4639void
3511ev_signal_stop (EV_P_ ev_signal *w) 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3512{ 4641{
3513 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
3514 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
3515 return; 4644 return;
3516 4645
3517 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3518 4647
3519 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3547#endif 4676#endif
3548 4677
3549#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
3550 4679
3551void 4680void
3552ev_child_start (EV_P_ ev_child *w) 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3553{ 4682{
3554#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4684 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3556#endif 4685#endif
3557 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
3558 return; 4687 return;
3559 4688
3560 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
3561 4690
3562 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
3564 4693
3565 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3566} 4695}
3567 4696
3568void 4697void
3569ev_child_stop (EV_P_ ev_child *w) 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3570{ 4699{
3571 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
3573 return; 4702 return;
3574 4703
3575 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
3576 4705
3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3591 4720
3592#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3594#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
3595 4724
3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4725ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3597 4726
3598#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
3599 4728
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4729/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3602 4731
3603static void noinline 4732ecb_noinline
4733static void
3604infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
3605{ 4735{
3606 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4736 w->wd = inotify_add_watch (fs_fd, w->path,
4737 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4738 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4739 | IN_DONT_FOLLOW | IN_MASK_ADD);
3607 4740
3608 if (w->wd >= 0) 4741 if (w->wd >= 0)
3609 { 4742 {
3610 struct statfs sfs; 4743 struct statfs sfs;
3611 4744
… …
3615 4748
3616 if (!fs_2625) 4749 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4750 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs) 4751 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */ 4752 && (sfs.f_type == 0x1373 /* devfs */
4753 || sfs.f_type == 0x4006 /* fat */
4754 || sfs.f_type == 0x4d44 /* msdos */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */ 4755 || sfs.f_type == 0xEF53 /* ext2/3 */
4756 || sfs.f_type == 0x72b6 /* jffs2 */
4757 || sfs.f_type == 0x858458f6 /* ramfs */
4758 || sfs.f_type == 0x5346544e /* ntfs */
3621 || sfs.f_type == 0x3153464a /* jfs */ 4759 || sfs.f_type == 0x3153464a /* jfs */
4760 || sfs.f_type == 0x9123683e /* btrfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */ 4761 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */ 4762 || sfs.f_type == 0x01021994 /* tmpfs */
3624 || sfs.f_type == 0x58465342 /* xfs */)) 4763 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4764 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else 4765 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4766 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3628 } 4767 }
… …
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3666} 4805}
3667 4806
3668static void noinline 4807ecb_noinline
4808static void
3669infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
3670{ 4810{
3671 int slot; 4811 int slot;
3672 int wd = w->wd; 4812 int wd = w->wd;
3673 4813
… …
3680 4820
3681 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
3682 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
3683} 4823}
3684 4824
3685static void noinline 4825ecb_noinline
4826static void
3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3687{ 4828{
3688 if (slot < 0) 4829 if (slot < 0)
3689 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3726 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
3728 } 4869 }
3729} 4870}
3730 4871
3731inline_size void ecb_cold 4872inline_size ecb_cold
4873void
3732ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
3733{ 4875{
3734 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4877 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */ 4878 */
… …
3826#else 4968#else
3827# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
3828#endif 4970#endif
3829 4971
3830void 4972void
3831ev_stat_stat (EV_P_ ev_stat *w) 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3832{ 4974{
3833 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
3834 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
3835 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
3836 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
3837} 4979}
3838 4980
3839static void noinline 4981ecb_noinline
4982static void
3840stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3841{ 4984{
3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3843 4986
3844 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
3875 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
3876 } 5019 }
3877} 5020}
3878 5021
3879void 5022void
3880ev_stat_start (EV_P_ ev_stat *w) 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3881{ 5024{
3882 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
3883 return; 5026 return;
3884 5027
3885 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
3886 5029
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3906 5049
3907 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3908} 5051}
3909 5052
3910void 5053void
3911ev_stat_stop (EV_P_ ev_stat *w) 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3912{ 5055{
3913 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3914 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3915 return; 5058 return;
3916 5059
3917 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3918 5061
3919#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
3932} 5075}
3933#endif 5076#endif
3934 5077
3935#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
3936void 5079void
3937ev_idle_start (EV_P_ ev_idle *w) 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3938{ 5081{
3939 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
3940 return; 5083 return;
3941 5084
3942 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
3943 5086
3944 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
3947 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
3948 5091
3949 ++idleall; 5092 ++idleall;
3950 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
3951 5094
3952 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5095 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3953 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
3954 } 5097 }
3955 5098
3956 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
3957} 5100}
3958 5101
3959void 5102void
3960ev_idle_stop (EV_P_ ev_idle *w) 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3961{ 5104{
3962 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
3963 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
3964 return; 5107 return;
3965 5108
3966 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3967 5110
3968 { 5111 {
… …
3979} 5122}
3980#endif 5123#endif
3981 5124
3982#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
3983void 5126void
3984ev_prepare_start (EV_P_ ev_prepare *w) 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3985{ 5128{
3986 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
3987 return; 5130 return;
3988 5131
3989 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3990 5133
3991 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
3992 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3993 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
3994 5137
3995 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3996} 5139}
3997 5140
3998void 5141void
3999ev_prepare_stop (EV_P_ ev_prepare *w) 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
4000{ 5143{
4001 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
4002 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
4003 return; 5146 return;
4004 5147
4005 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4006 5149
4007 { 5150 {
… …
4017} 5160}
4018#endif 5161#endif
4019 5162
4020#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4021void 5164void
4022ev_check_start (EV_P_ ev_check *w) 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4023{ 5166{
4024 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4025 return; 5168 return;
4026 5169
4027 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4028 5171
4029 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4030 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4031 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4032 5175
4033 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4034} 5177}
4035 5178
4036void 5179void
4037ev_check_stop (EV_P_ ev_check *w) 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4038{ 5181{
4039 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4040 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4041 return; 5184 return;
4042 5185
4043 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4044 5187
4045 { 5188 {
… …
4054 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4055} 5198}
4056#endif 5199#endif
4057 5200
4058#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4059void noinline 5202ecb_noinline
5203void
4060ev_embed_sweep (EV_P_ ev_embed *w) 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4061{ 5205{
4062 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4063} 5207}
4064 5208
4065static void 5209static void
… …
4087 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4088 } 5232 }
4089 } 5233 }
4090} 5234}
4091 5235
5236#if EV_FORK_ENABLE
4092static void 5237static void
4093embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4094{ 5239{
4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5240 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4096 5241
… …
4103 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4104 } 5249 }
4105 5250
4106 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4107} 5252}
5253#endif
4108 5254
4109#if 0 5255#if 0
4110static void 5256static void
4111embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4112{ 5258{
4113 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4114} 5260}
4115#endif 5261#endif
4116 5262
4117void 5263void
4118ev_embed_start (EV_P_ ev_embed *w) 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4119{ 5265{
4120 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4121 return; 5267 return;
4122 5268
4123 { 5269 {
4124 EV_P = w->other; 5270 EV_P = w->other;
4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5271 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4133 5279
4134 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4135 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4136 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4137 5283
5284#if EV_FORK_ENABLE
4138 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4139 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4140 5288
4141 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4142 5290
4143 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4144 5292
4145 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4146} 5294}
4147 5295
4148void 5296void
4149ev_embed_stop (EV_P_ ev_embed *w) 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4150{ 5298{
4151 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4152 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4153 return; 5301 return;
4154 5302
4155 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4156 5304
4157 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4158 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4159 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4160 5310
4161 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4162 5312
4163 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4164} 5314}
4165#endif 5315#endif
4166 5316
4167#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4168void 5318void
4169ev_fork_start (EV_P_ ev_fork *w) 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4170{ 5320{
4171 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4172 return; 5322 return;
4173 5323
4174 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4175 5325
4176 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4177 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4178 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4179 5329
4180 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4181} 5331}
4182 5332
4183void 5333void
4184ev_fork_stop (EV_P_ ev_fork *w) 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4185{ 5335{
4186 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4187 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4188 return; 5338 return;
4189 5339
4190 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4191 5341
4192 { 5342 {
… …
4202} 5352}
4203#endif 5353#endif
4204 5354
4205#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4206void 5356void
4207ev_cleanup_start (EV_P_ ev_cleanup *w) 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4208{ 5358{
4209 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4210 return; 5360 return;
4211 5361
4212 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4213 5363
4214 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4216 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4217 5367
4218 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A); 5369 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4221} 5371}
4222 5372
4223void 5373void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w) 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4225{ 5375{
4226 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4228 return; 5378 return;
4229 5379
4230 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A); 5381 ev_ref (EV_A);
4232 5382
… …
4243} 5393}
4244#endif 5394#endif
4245 5395
4246#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4247void 5397void
4248ev_async_start (EV_P_ ev_async *w) 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4249{ 5399{
4250 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4251 return; 5401 return;
4252 5402
4253 w->sent = 0; 5403 w->sent = 0;
4254 5404
4255 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4256 5406
4257 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4258 5408
4259 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4260 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4261 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4262 5412
4263 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4264} 5414}
4265 5415
4266void 5416void
4267ev_async_stop (EV_P_ ev_async *w) 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4268{ 5418{
4269 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4270 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4271 return; 5421 return;
4272 5422
4273 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4274 5424
4275 { 5425 {
… …
4283 5433
4284 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4285} 5435}
4286 5436
4287void 5437void
4288ev_async_send (EV_P_ ev_async *w) 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4289{ 5439{
4290 w->sent = 1; 5440 w->sent = 1;
4291 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4292} 5442}
4293#endif 5443#endif
… …
4330 5480
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5481 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4332} 5482}
4333 5483
4334void 5484void
4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5485ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4336{ 5486{
4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5487 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4338
4339 if (expect_false (!once))
4340 {
4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4342 return;
4343 }
4344 5488
4345 once->cb = cb; 5489 once->cb = cb;
4346 once->arg = arg; 5490 once->arg = arg;
4347 5491
4348 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4361} 5505}
4362 5506
4363/*****************************************************************************/ 5507/*****************************************************************************/
4364 5508
4365#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4366void ecb_cold 5510ecb_cold
5511void
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5512ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4368{ 5513{
4369 int i, j; 5514 int i, j;
4370 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4371 5516
4372 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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