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Comparing libev/ev.c (file contents):
Revision 1.411 by root, Tue Feb 21 04:34:02 2012 UTC vs.
Revision 1.526 by root, Wed Jan 22 17:11:33 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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
212 250
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
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
225/* use what's provided */ 255/* use what's provided */
226#elif defined (NSIG) 256#elif defined NSIG
227# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 258#elif defined _NSIG
229# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 260#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 262#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 266#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 268#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
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
260# endif 287# endif
261#endif 288#endif
262 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
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
265# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 302# else
267# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
268# endif 304# endif
269#endif 305#endif
… …
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
… …
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
396#endif 467#endif
397 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
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
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
511 653
512#ifdef _WIN32 654#ifdef _WIN32
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)
556#endif 779#endif
557 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
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")
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__
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")
582 #endif 842 #endif
583 #endif 843 #endif
584#endif 844#endif
585 845
586#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
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
588 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
590 /*#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()
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #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 */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32) 874 #elif defined _WIN32
597 #include <WinNT.h> 875 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h> 878 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
603 #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 ()
883 #elif __xlC__
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)
604 #endif 896 #endif
605#endif 897#endif
606 898
607#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif 914 #endif
623#endif 915#endif
624 916
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif 919#endif
628 920
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif 923#endif
632 924
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
633/*****************************************************************************/ 929/*****************************************************************************/
634 930
635#define ECB_C99 (__STDC_VERSION__ >= 199901L) 931#if ECB_CPP
636
637#if __cplusplus
638 #define ecb_inline static inline 932 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
641#elif ECB_C99 935#elif ECB_C99
642 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
656 950
657#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
660#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))
661 956
662#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
663 958
664#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
665 #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)
666 #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)
667 #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)
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else 983#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
674#endif 985#endif
675 986
676/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
677#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; };
678 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
679#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
680 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
681#endif 994#endif
682 995
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
683#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__)) 1014#endif
1015
685#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
687#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
688 1031
689#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__)) 1033 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__)) 1034 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__)) 1035 #define ecb_cold ecb_attribute ((__cold__))
… …
704/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
707 1050
708/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
709#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))
710 /* 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 */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */ 1062 /* no popcountll */
717#else 1063#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
719 ecb_function_ int 1065 ecb_function_ ecb_const int
720 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
721 { 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
722 int r = 0; 1073 int r = 0;
723 1074
724 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
725 1076
726#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
736 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
738#endif 1089#endif
739 1090
740 return r; 1091 return r;
1092#endif
741 } 1093 }
742 1094
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
744 ecb_function_ int 1096 ecb_function_ ecb_const int
745 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
746 { 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
747 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
749 } 1107 }
750 1108
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
752 ecb_function_ int 1110 ecb_function_ ecb_const int
753 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
754 { 1112 {
755 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101; 1116 x *= 0x01010101;
759 1117
760 return x >> 24; 1118 return x >> 24;
761 } 1119 }
762 1120
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
764 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
765 { 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
766 int r = 0; 1129 int r = 0;
767 1130
768 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
773 1136
774 return r; 1137 return r;
1138#endif
775 } 1139 }
776 1140
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
778 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
779 { 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
780 int r = 0; 1149 int r = 0;
781 1150
782 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
783 1152
784 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
785 } 1155 }
786#endif 1156#endif
787 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
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
790{ 1165{
791 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793} 1168}
794 1169
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
797{ 1172{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
802 1177
803 return x; 1178 return x;
804} 1179}
805 1180
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
808{ 1183{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
815 return x; 1190 return x;
816} 1191}
817 1192
818/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */ 1194/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
821ecb_function_ int 1196ecb_function_ ecb_const int
822ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
823{ 1198{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825} 1200}
826 1201
827ecb_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);
828ecb_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);
829ecb_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);
830ecb_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);
831ecb_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);
832ecb_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);
833ecb_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);
834ecb_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);
835 1210
836ecb_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); }
837ecb_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); }
838ecb_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); }
839ecb_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); }
840ecb_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); }
841ecb_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); }
842ecb_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); }
843ecb_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); }
844 1219
845#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
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
847 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #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)))
849#else 1271#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
851 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
852 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
853 { 1275 {
854 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
855 } 1277 }
856 1278
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
858 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
859 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
860 { 1282 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 } 1284 }
863 1285
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
865 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
866 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
867 { 1289 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 } 1291 }
870#endif 1292#endif
871 1293
872#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
873 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
874#else 1296#else
875 /* 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 :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
877 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
878#endif 1300#endif
879 1301
880/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
882 1304
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
884ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
885ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
886{ 1308{
887 const uint32_t u = 0x11223344; 1309 /* the union code still generates code under pressure in gcc, */
888 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
889} 1331}
890 1332
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
892ecb_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; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
894ecb_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/*****************************************************************************/
895 1409
896#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #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))
898#else 1412#else
899 #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)))
900#endif 1414#endif
901 1415
902#if __cplusplus 1416#if ECB_CPP
903 template<typename T> 1417 template<typename T>
904 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
905 { 1419 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 } 1421 }
… …
924 } 1438 }
925#else 1439#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif 1441#endif
928 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
929#endif 1749#endif
930 1750
931/* ECB.H END */ 1751/* ECB.H END */
932 1752
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* 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
935 * 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
936 * 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
937 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
940 */ 1760 */
941# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
945# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif 1768#endif
949 1769
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
954#define inline_size ecb_inline 1770#define inline_size ecb_inline
955 1771
956#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
957# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
958#else 1774#else
959# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
960#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/*****************************************************************************/
961 1843
962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
963 1845
964#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
965# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
966#else 1848#else
967# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
968#endif 1850#endif
969 1851
970#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
971#define EMPTY2(a,b) /* used to suppress some warnings */
972 1853
973typedef ev_watcher *W; 1854typedef ev_watcher *W;
974typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
975typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
976 1857
… …
1001# include "ev_win32.c" 1882# include "ev_win32.c"
1002#endif 1883#endif
1003 1884
1004/*****************************************************************************/ 1885/*****************************************************************************/
1005 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1006/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1007 1892
1008#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1009# include <math.h> 1894# include <math.h>
1010# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1011#else 1896#else
1012 1897
1013#include <float.h> 1898#include <float.h>
1014 1899
1015/* 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
1016static ev_tstamp noinline 1902static ev_tstamp
1017ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1018{ 1904{
1019 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else 1908#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif 1910#endif
1025 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
1026 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1027 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1028 { 1922 {
1029 ev_tstamp f; 1923 ev_tstamp f;
1030 1924
1031 if (v == v - 1.) 1925 if (v == v - 1.)
1032 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1033 1927
1034 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1036 } 1930 }
1037 1931
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1047 return (unsigned long)v; 1933 return (unsigned long)v;
1048} 1934}
1049 1935
1050#endif 1936#endif
… …
1053 1939
1054#ifdef __linux 1940#ifdef __linux
1055# include <sys/utsname.h> 1941# include <sys/utsname.h>
1056#endif 1942#endif
1057 1943
1058static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1059ev_linux_version (void) 1946ev_linux_version (void)
1060{ 1947{
1061#ifdef __linux 1948#ifdef __linux
1062 unsigned int v = 0; 1949 unsigned int v = 0;
1063 struct utsname buf; 1950 struct utsname buf;
… …
1092} 1979}
1093 1980
1094/*****************************************************************************/ 1981/*****************************************************************************/
1095 1982
1096#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1097static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1098ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1099{ 1987{
1100 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1101} 1989}
1102#endif 1990#endif
1103 1991
1104static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1105 1993
1106void ecb_cold 1994ecb_cold
1995void
1107ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1108{ 1997{
1109 syserr_cb = cb; 1998 syserr_cb = cb;
1110} 1999}
1111 2000
1112static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1113ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1114{ 2004{
1115 if (!msg) 2005 if (!msg)
1116 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1117 2007
… …
1130 abort (); 2020 abort ();
1131 } 2021 }
1132} 2022}
1133 2023
1134static void * 2024static void *
1135ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1136{ 2026{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
1140 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1141 * 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
1142 * 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.
1143 */ 2032 */
1144 2033
1145 if (size) 2034 if (size)
1146 return realloc (ptr, size); 2035 return realloc (ptr, size);
1147 2036
1148 free (ptr); 2037 free (ptr);
1149 return 0; 2038 return 0;
1150#endif
1151} 2039}
1152 2040
1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1154 2042
1155void ecb_cold 2043ecb_cold
2044void
1156ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1157{ 2046{
1158 alloc = cb; 2047 alloc = cb;
1159} 2048}
1160 2049
1161inline_speed void * 2050inline_speed void *
… …
1188typedef struct 2077typedef struct
1189{ 2078{
1190 WL head; 2079 WL head;
1191 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1192 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) */
1193 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 */
1194 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1195#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1196 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1197#endif 2086#endif
1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1199 SOCKET handle; 2088 SOCKET handle;
… …
1253 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1254 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 */
1255 2144
1256#else 2145#else
1257 2146
1258 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 */
1259 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1260 #include "ev_vars.h" 2149 #include "ev_vars.h"
1261 #undef VAR 2150 #undef VAR
1262 2151
1263 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1264 2153
1265#endif 2154#endif
1266 2155
1267#if EV_FEATURE_API 2156#if EV_FEATURE_API
1268# 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)
1269# 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)
1270# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1271#else 2160#else
1272# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1273# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1278 2167
1279/*****************************************************************************/ 2168/*****************************************************************************/
1280 2169
1281#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1282ev_tstamp 2171ev_tstamp
1283ev_time (void) 2172ev_time (void) EV_NOEXCEPT
1284{ 2173{
1285#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1286 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1287 { 2176 {
1288 struct timespec ts; 2177 struct timespec ts;
1289 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1290 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1291 } 2180 }
1292#endif 2181#endif
1293 2182
2183 {
1294 struct timeval tv; 2184 struct timeval tv;
1295 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1296 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1297} 2188}
1298#endif 2189#endif
1299 2190
1300inline_size ev_tstamp 2191inline_size ev_tstamp
1301get_clock (void) 2192get_clock (void)
1302{ 2193{
1303#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1304 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1305 { 2196 {
1306 struct timespec ts; 2197 struct timespec ts;
1307 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1308 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1309 } 2200 }
1310#endif 2201#endif
1311 2202
1312 return ev_time (); 2203 return ev_time ();
1313} 2204}
1314 2205
1315#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1316ev_tstamp 2207ev_tstamp
1317ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
1318{ 2209{
1319 return ev_rt_now; 2210 return ev_rt_now;
1320} 2211}
1321#endif 2212#endif
1322 2213
1323void 2214void
1324ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1325{ 2216{
1326 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1327 { 2218 {
1328#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1329 struct timespec ts; 2220 struct timespec ts;
1330 2221
1331 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1332 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1333#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) */
1334 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1335#else 2228#else
1336 struct timeval tv; 2229 struct timeval tv;
1337 2230
1338 /* 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 */
1339 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1369 } 2262 }
1370 2263
1371 return ncur; 2264 return ncur;
1372} 2265}
1373 2266
1374static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1375array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1376{ 2270{
1377 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1378 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1379} 2273}
1380 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1381#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1382 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1383 2279
1384#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1385 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1386 { \ 2282 { \
1387 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1388 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1389 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1390 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1391 } 2287 }
1392 2288
1393#if 0 2289#if 0
1394#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1395 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1404 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
1405 2301
1406/*****************************************************************************/ 2302/*****************************************************************************/
1407 2303
1408/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1409static void noinline 2305ecb_noinline
2306static void
1410pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1411{ 2308{
1412} 2309}
1413 2310
1414void noinline 2311ecb_noinline
2312void
1415ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1416{ 2314{
1417 W w_ = (W)w; 2315 W w_ = (W)w;
1418 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1419 2317
1420 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1421 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1422 else 2320 else
1423 { 2321 {
1424 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1425 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1426 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1427 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1428 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
1429} 2329}
1430 2330
1431inline_speed void 2331inline_speed void
1432feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1433{ 2333{
1434 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1435 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1436} 2336}
1437 2337
1438inline_size void 2338inline_size void
1439feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1474inline_speed void 2374inline_speed void
1475fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1476{ 2376{
1477 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1478 2378
1479 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1480 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1481} 2381}
1482 2382
1483void 2383void
1484ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1485{ 2385{
1486 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1487 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1488} 2388}
1489 2389
… …
1492inline_size void 2392inline_size void
1493fd_reify (EV_P) 2393fd_reify (EV_P)
1494{ 2394{
1495 int i; 2395 int i;
1496 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
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1499 { 2411 {
1500 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1502 2414
1503 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1517 } 2429 }
1518 } 2430 }
1519 } 2431 }
1520#endif 2432#endif
1521 2433
1522 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1523 { 2435 {
1524 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1525 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1526 ev_io *w; 2438 ev_io *w;
1527 2439
1528 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1530 2442
1531 anfd->reify = 0; 2443 anfd->reify = 0;
1532 2444
1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1534 { 2446 {
1535 anfd->events = 0; 2447 anfd->events = 0;
1536 2448
1537 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)
1538 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1543 2455
1544 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1545 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1546 } 2458 }
1547 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
1548 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1549} 2468}
1550 2469
1551/* something about the given fd changed */ 2470/* something about the given fd changed */
1552inline_size void 2471inline_size
2472void
1553fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1554{ 2474{
1555 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1556 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1557 2477
1558 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1559 { 2479 {
1560 ++fdchangecnt; 2480 ++fdchangecnt;
1561 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1562 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1563 } 2483 }
1564} 2484}
1565 2485
1566/* 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 */
1567inline_speed void ecb_cold 2487inline_speed ecb_cold void
1568fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1569{ 2489{
1570 ev_io *w; 2490 ev_io *w;
1571 2491
1572 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1575 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);
1576 } 2496 }
1577} 2497}
1578 2498
1579/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1580inline_size int ecb_cold 2500inline_size ecb_cold int
1581fd_valid (int fd) 2501fd_valid (int fd)
1582{ 2502{
1583#ifdef _WIN32 2503#ifdef _WIN32
1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1585#else 2505#else
1586 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1587#endif 2507#endif
1588} 2508}
1589 2509
1590/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1591static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1592fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1593{ 2514{
1594 int fd; 2515 int fd;
1595 2516
1596 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1598 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1599 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1600} 2521}
1601 2522
1602/* 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 */
1603static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1604fd_enomem (EV_P) 2526fd_enomem (EV_P)
1605{ 2527{
1606 int fd; 2528 int fd;
1607 2529
1608 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1612 break; 2534 break;
1613 } 2535 }
1614} 2536}
1615 2537
1616/* 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 */
1617static void noinline 2539ecb_noinline
2540static void
1618fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1619{ 2542{
1620 int fd; 2543 int fd;
1621 2544
1622 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1675 ev_tstamp minat; 2598 ev_tstamp minat;
1676 ANHE *minpos; 2599 ANHE *minpos;
1677 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1678 2601
1679 /* find minimum child */ 2602 /* find minimum child */
1680 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1681 { 2604 {
1682 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1683 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));
1684 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));
1685 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));
1686 } 2609 }
1687 else if (pos < E) 2610 else if (pos < E)
1688 { 2611 {
1689 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1690 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));
1691 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));
1692 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));
1693 } 2616 }
1694 else 2617 else
1695 break; 2618 break;
1696 2619
1697 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1705 2628
1706 heap [k] = he; 2629 heap [k] = he;
1707 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1708} 2631}
1709 2632
1710#else /* 4HEAP */ 2633#else /* not 4HEAP */
1711 2634
1712#define HEAP0 1 2635#define HEAP0 1
1713#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1714#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1715 2638
… …
1787 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1788} 2711}
1789 2712
1790/*****************************************************************************/ 2713/*****************************************************************************/
1791 2714
1792/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1793typedef struct 2716typedef struct
1794{ 2717{
1795 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1796#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1797 EV_P; 2720 EV_P;
… …
1803 2726
1804/*****************************************************************************/ 2727/*****************************************************************************/
1805 2728
1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1807 2730
1808static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
1809evpipe_init (EV_P) 2733evpipe_init (EV_P)
1810{ 2734{
1811 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1812 { 2736 {
2737 int fds [2];
2738
1813# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1816 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1817 2744
1818 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1819 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1820 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1821 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1822 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));
1823 } 2806 }
1824 else 2807 else
1825# endif 2808#endif
1826 { 2809 {
1827 while (pipe (evpipe)) 2810#ifdef _WIN32
1828 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1829 2812 DWORD sent;
1830 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1831 fd_intern (evpipe [1]); 2814 buf.len = 1;
1832 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1833 } 2816#else
1834
1835 ev_io_start (EV_A_ &pipe_w);
1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1837 }
1838}
1839
1840inline_speed void
1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1842{
1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1860 old_errno = errno; /* save errno because write will clobber it */
1861
1862#if EV_USE_EVENTFD
1863 if (evfd >= 0)
1864 {
1865 uint64_t counter = 1;
1866 write (evfd, &counter, sizeof (uint64_t));
1867 }
1868 else
1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1876 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1877 /* check the ev documentation on how to use this flag */
1878 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1879 } 2819 }
1880 2820
1881 errno = old_errno; 2821 errno = old_errno;
1882 } 2822 }
1883} 2823}
… …
1890 int i; 2830 int i;
1891 2831
1892 if (revents & EV_READ) 2832 if (revents & EV_READ)
1893 { 2833 {
1894#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1895 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1896 { 2836 {
1897 uint64_t counter; 2837 uint64_t counter;
1898 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1899 } 2839 }
1900 else 2840 else
1901#endif 2841#endif
1902 { 2842 {
1903 char dummy; 2843 char dummy[4];
1904 /* 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
1905 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
1906 } 2854 }
1907 } 2855 }
1908 2856
1909 pipe_write_skipped = 0; 2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1910 2860
1911#if EV_SIGNAL_ENABLE 2861#if EV_SIGNAL_ENABLE
1912 if (sig_pending) 2862 if (sig_pending)
1913 { 2863 {
1914 sig_pending = 0; 2864 sig_pending = 0;
1915 2865
2866 ECB_MEMORY_FENCE;
2867
1916 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1917 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1918 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1919 } 2871 }
1920#endif 2872#endif
1921 2873
1922#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1923 if (async_pending) 2875 if (async_pending)
1924 { 2876 {
1925 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1926 2880
1927 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1928 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1929 { 2883 {
1930 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1931 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1932 } 2887 }
1933 } 2888 }
1934#endif 2889#endif
1935} 2890}
1936 2891
1937/*****************************************************************************/ 2892/*****************************************************************************/
1938 2893
1939void 2894void
1940ev_feed_signal (int signum) 2895ev_feed_signal (int signum) EV_NOEXCEPT
1941{ 2896{
1942#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
1943 EV_P = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
1944 2901
1945 if (!EV_A) 2902 if (!EV_A)
1946 return; 2903 return;
1947#endif 2904#endif
1948 2905
1949 if (!ev_active (&pipe_w))
1950 return;
1951
1952 signals [signum - 1].pending = 1; 2906 signals [signum - 1].pending = 1;
1953 evpipe_write (EV_A_ &sig_pending); 2907 evpipe_write (EV_A_ &sig_pending);
1954} 2908}
1955 2909
1956static void 2910static void
… …
1961#endif 2915#endif
1962 2916
1963 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
1964} 2918}
1965 2919
1966void noinline 2920ecb_noinline
2921void
1967ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1968{ 2923{
1969 WL w; 2924 WL w;
1970 2925
1971 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1972 return; 2927 return;
1973 2928
1974 --signum; 2929 --signum;
1975 2930
1976#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1977 /* 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 */
1978 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1979 2934
1980 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1981 return; 2936 return;
1982#endif 2937#endif
1983 2938
1984 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1985 2941
1986 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1988} 2944}
1989 2945
… …
2068 3024
2069#endif 3025#endif
2070 3026
2071/*****************************************************************************/ 3027/*****************************************************************************/
2072 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
2073#if EV_USE_IOCP 3080#if EV_USE_IOCP
2074# include "ev_iocp.c" 3081# include "ev_iocp.c"
2075#endif 3082#endif
2076#if EV_USE_PORT 3083#if EV_USE_PORT
2077# include "ev_port.c" 3084# include "ev_port.c"
… …
2080# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
2081#endif 3088#endif
2082#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
2083# include "ev_epoll.c" 3090# include "ev_epoll.c"
2084#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
2085#if EV_USE_POLL 3098#if EV_USE_POLL
2086# include "ev_poll.c" 3099# include "ev_poll.c"
2087#endif 3100#endif
2088#if EV_USE_SELECT 3101#if EV_USE_SELECT
2089# include "ev_select.c" 3102# include "ev_select.c"
2090#endif 3103#endif
2091 3104
2092int ecb_cold 3105ecb_cold int
2093ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
2094{ 3107{
2095 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
2096} 3109}
2097 3110
2098int ecb_cold 3111ecb_cold int
2099ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
2100{ 3113{
2101 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
2102} 3115}
2103 3116
2104/* 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 */
2105int inline_size ecb_cold 3118inline_size ecb_cold int
2106enable_secure (void) 3119enable_secure (void)
2107{ 3120{
2108#ifdef _WIN32 3121#ifdef _WIN32
2109 return 0; 3122 return 0;
2110#else 3123#else
2111 return getuid () != geteuid () 3124 return getuid () != geteuid ()
2112 || getgid () != getegid (); 3125 || getgid () != getegid ();
2113#endif 3126#endif
2114} 3127}
2115 3128
2116unsigned int ecb_cold 3129ecb_cold
3130unsigned int
2117ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
2118{ 3132{
2119 unsigned int flags = 0; 3133 unsigned int flags = 0;
2120 3134
2121 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2122 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2123 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2124 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2125 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2126 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
2127 return flags; 3143 return flags;
2128} 3144}
2129 3145
2130unsigned int ecb_cold 3146ecb_cold
3147unsigned int
2131ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
2132{ 3149{
2133 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
2134 3151
2135#ifndef __NetBSD__ 3152#ifndef __NetBSD__
2136 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
2144#endif 3161#endif
2145#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
2146 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) */
2147#endif 3164#endif
2148 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
2149 return flags; 3175 return flags;
2150} 3176}
2151 3177
2152unsigned int ecb_cold 3178ecb_cold
3179unsigned int
2153ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
2154{ 3181{
2155 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2156 3183
2157 /* 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 */
2158 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 */
2159 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
2160 3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3189
2161 return flags; 3190 return flags;
2162} 3191}
2163 3192
2164unsigned int 3193unsigned int
2165ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
2166{ 3195{
2167 return backend; 3196 return backend;
2168} 3197}
2169 3198
2170#if EV_FEATURE_API 3199#if EV_FEATURE_API
2171unsigned int 3200unsigned int
2172ev_iteration (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
2173{ 3202{
2174 return loop_count; 3203 return loop_count;
2175} 3204}
2176 3205
2177unsigned int 3206unsigned int
2178ev_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
2179{ 3208{
2180 return loop_depth; 3209 return loop_depth;
2181} 3210}
2182 3211
2183void 3212void
2184ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2185{ 3214{
2186 io_blocktime = interval; 3215 io_blocktime = interval;
2187} 3216}
2188 3217
2189void 3218void
2190ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2191{ 3220{
2192 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
2193} 3222}
2194 3223
2195void 3224void
2196ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2197{ 3226{
2198 userdata = data; 3227 userdata = data;
2199} 3228}
2200 3229
2201void * 3230void *
2202ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
2203{ 3232{
2204 return userdata; 3233 return userdata;
2205} 3234}
2206 3235
2207void 3236void
2208ev_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
2209{ 3238{
2210 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
2211} 3240}
2212 3241
2213void 3242void
2214ev_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
2215{ 3244{
2216 release_cb = release; 3245 release_cb = release;
2217 acquire_cb = acquire; 3246 acquire_cb = acquire;
2218} 3247}
2219#endif 3248#endif
2220 3249
2221/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
2222static void noinline ecb_cold 3251ecb_noinline ecb_cold
3252static void
2223loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2224{ 3254{
2225 if (!backend) 3255 if (!backend)
2226 { 3256 {
2227 origflags = flags; 3257 origflags = flags;
2228 3258
… …
2273#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
2274 async_pending = 0; 3304 async_pending = 0;
2275#endif 3305#endif
2276 pipe_write_skipped = 0; 3306 pipe_write_skipped = 0;
2277 pipe_write_wanted = 0; 3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
2278#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
2279 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2280#endif 3312#endif
2281#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
2282 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2283#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
2284 3319
2285 if (!(flags & EVBACKEND_MASK)) 3320 if (!(flags & EVBACKEND_MASK))
2286 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
2287 3322
2288#if EV_USE_IOCP 3323#if EV_USE_IOCP
2289 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2290#endif 3325#endif
2291#if EV_USE_PORT 3326#if EV_USE_PORT
2292 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2293#endif 3328#endif
2294#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
2295 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);
2296#endif 3337#endif
2297#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
2298 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2299#endif 3340#endif
2300#if EV_USE_POLL 3341#if EV_USE_POLL
2301 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2302#endif 3343#endif
2303#if EV_USE_SELECT 3344#if EV_USE_SELECT
2304 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2305#endif 3346#endif
2306 3347
2307 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
2308 3349
2309#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2312#endif 3353#endif
2313 } 3354 }
2314} 3355}
2315 3356
2316/* free up a loop structure */ 3357/* free up a loop structure */
2317void ecb_cold 3358ecb_cold
3359void
2318ev_loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
2319{ 3361{
2320 int i; 3362 int i;
2321 3363
2322#if EV_MULTIPLICITY 3364#if EV_MULTIPLICITY
… …
2325 return; 3367 return;
2326#endif 3368#endif
2327 3369
2328#if EV_CLEANUP_ENABLE 3370#if EV_CLEANUP_ENABLE
2329 /* queue cleanup watchers (and execute them) */ 3371 /* queue cleanup watchers (and execute them) */
2330 if (expect_false (cleanupcnt)) 3372 if (ecb_expect_false (cleanupcnt))
2331 { 3373 {
2332 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2333 EV_INVOKE_PENDING; 3375 EV_INVOKE_PENDING;
2334 } 3376 }
2335#endif 3377#endif
2336 3378
2337#if EV_CHILD_ENABLE 3379#if EV_CHILD_ENABLE
2338 if (ev_is_active (&childev)) 3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2339 { 3381 {
2340 ev_ref (EV_A); /* child watcher */ 3382 ev_ref (EV_A); /* child watcher */
2341 ev_signal_stop (EV_A_ &childev); 3383 ev_signal_stop (EV_A_ &childev);
2342 } 3384 }
2343#endif 3385#endif
… …
2345 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
2346 { 3388 {
2347 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
2348 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
2349 3391
2350#if EV_USE_EVENTFD
2351 if (evfd >= 0)
2352 close (evfd);
2353#endif
2354
2355 if (evpipe [0] >= 0)
2356 {
2357 EV_WIN32_CLOSE_FD (evpipe [0]); 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2358 EV_WIN32_CLOSE_FD (evpipe [1]); 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2359 }
2360 } 3394 }
2361 3395
2362#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
2363 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
2364 close (sigfd); 3398 close (sigfd);
2365#endif 3399#endif
2366 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
2367#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
2368 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
2369 close (fs_fd); 3408 close (fs_fd);
2370#endif 3409#endif
2371 3410
2372 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
2373 close (backend_fd); 3412 close (backend_fd);
2374 3413
2375#if EV_USE_IOCP 3414#if EV_USE_IOCP
2376 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2377#endif 3416#endif
2378#if EV_USE_PORT 3417#if EV_USE_PORT
2379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2380#endif 3419#endif
2381#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
2382 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);
2383#endif 3428#endif
2384#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
2385 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2386#endif 3431#endif
2387#if EV_USE_POLL 3432#if EV_USE_POLL
2388 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2389#endif 3434#endif
2390#if EV_USE_SELECT 3435#if EV_USE_SELECT
2391 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2392#endif 3437#endif
2393 3438
2394 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
2395 { 3440 {
2396 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
2438 3483
2439inline_size void 3484inline_size void
2440loop_fork (EV_P) 3485loop_fork (EV_P)
2441{ 3486{
2442#if EV_USE_PORT 3487#if EV_USE_PORT
2443 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2444#endif 3489#endif
2445#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
2446 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);
2447#endif 3498#endif
2448#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
2449 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2450#endif 3501#endif
2451#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2452 infy_fork (EV_A); 3503 infy_fork (EV_A);
2453#endif 3504#endif
2454 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
2455 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
2456 { 3529 {
2457 /* 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 */
2458 3531
2459 ev_ref (EV_A); 3532 ev_ref (EV_A);
2460 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
2461 3534
2462#if EV_USE_EVENTFD
2463 if (evfd >= 0)
2464 close (evfd);
2465#endif
2466
2467 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
2468 {
2469 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
2470 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);
2471 } 3541 }
2472 3542 #endif
2473#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2474 evpipe_init (EV_A);
2475 /* now iterate over everything, in case we missed something */
2476 pipecb (EV_A_ &pipe_w, EV_READ);
2477#endif
2478 } 3543 }
2479 3544
2480 postfork = 0; 3545 postfork = 0;
2481} 3546}
2482 3547
2483#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
2484 3549
3550ecb_cold
2485struct ev_loop * ecb_cold 3551struct ev_loop *
2486ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
2487{ 3553{
2488 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2489 3555
2490 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
2491 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
… …
2498} 3564}
2499 3565
2500#endif /* multiplicity */ 3566#endif /* multiplicity */
2501 3567
2502#if EV_VERIFY 3568#if EV_VERIFY
2503static void noinline ecb_cold 3569ecb_noinline ecb_cold
3570static void
2504verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
2505{ 3572{
2506 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));
2507 3574
2508 if (w->pending) 3575 if (w->pending)
2509 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));
2510} 3577}
2511 3578
2512static void noinline ecb_cold 3579ecb_noinline ecb_cold
3580static void
2513verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
2514{ 3582{
2515 int i; 3583 int i;
2516 3584
2517 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2522 3590
2523 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2524 } 3592 }
2525} 3593}
2526 3594
2527static void noinline ecb_cold 3595ecb_noinline ecb_cold
3596static void
2528array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
2529{ 3598{
2530 while (cnt--) 3599 while (cnt--)
2531 { 3600 {
2532 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2535} 3604}
2536#endif 3605#endif
2537 3606
2538#if EV_FEATURE_API 3607#if EV_FEATURE_API
2539void ecb_cold 3608void ecb_cold
2540ev_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
2541{ 3610{
2542#if EV_VERIFY 3611#if EV_VERIFY
2543 int i; 3612 int i;
2544 WL w; 3613 WL w, w2;
2545 3614
2546 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
2547 3616
2548 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
2549 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
2550 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2551 3620
2552 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
2553 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
2554 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
2555 { 3627 {
2556 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
2557 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));
2558 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));
2559 } 3638 }
3639 }
2560 3640
2561 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
2562 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
2563 3643
2564#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
2610#endif 3690#endif
2611} 3691}
2612#endif 3692#endif
2613 3693
2614#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
2615struct ev_loop * ecb_cold 3696struct ev_loop *
2616#else 3697#else
2617int 3698int
2618#endif 3699#endif
2619ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
2620{ 3701{
2621 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
2622 { 3703 {
2623#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
2624 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2643 3724
2644 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2645} 3726}
2646 3727
2647void 3728void
2648ev_loop_fork (EV_P) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2649{ 3730{
2650 postfork = 1; /* must be in line with ev_default_fork */ 3731 postfork = 1;
2651} 3732}
2652 3733
2653/*****************************************************************************/ 3734/*****************************************************************************/
2654 3735
2655void 3736void
… …
2657{ 3738{
2658 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2659} 3740}
2660 3741
2661unsigned int 3742unsigned int
2662ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
2663{ 3744{
2664 int pri; 3745 int pri;
2665 unsigned int count = 0; 3746 unsigned int count = 0;
2666 3747
2667 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2668 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2669 3750
2670 return count; 3751 return count;
2671} 3752}
2672 3753
2673void noinline 3754ecb_noinline
3755void
2674ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2675{ 3757{
2676 int pri; 3758 pendingpri = NUMPRI;
2677 3759
2678 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
2679 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
2680 { 3766 {
2681 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2682 3768
2683 p->w->pending = 0; 3769 p->w->pending = 0;
2684 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2685 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2686 } 3772 }
3773 }
3774 while (pendingpri);
2687} 3775}
2688 3776
2689#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2690/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2691/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2692inline_size void 3780inline_size void
2693idle_reify (EV_P) 3781idle_reify (EV_P)
2694{ 3782{
2695 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2696 { 3784 {
2697 int pri; 3785 int pri;
2698 3786
2699 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
2700 { 3788 {
… …
2730 { 3818 {
2731 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2732 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2733 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2734 3822
2735 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.)));
2736 3824
2737 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2738 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2739 } 3827 }
2740 else 3828 else
… …
2749 } 3837 }
2750} 3838}
2751 3839
2752#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
2753 3841
2754static void noinline 3842ecb_noinline
3843static void
2755periodic_recalc (EV_P_ ev_periodic *w) 3844periodic_recalc (EV_P_ ev_periodic *w)
2756{ 3845{
2757 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2758 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);
2759 3848
… …
2761 while (at <= ev_rt_now) 3850 while (at <= ev_rt_now)
2762 { 3851 {
2763 ev_tstamp nat = at + w->interval; 3852 ev_tstamp nat = at + w->interval;
2764 3853
2765 /* when resolution fails us, we use ev_rt_now */ 3854 /* when resolution fails us, we use ev_rt_now */
2766 if (expect_false (nat == at)) 3855 if (ecb_expect_false (nat == at))
2767 { 3856 {
2768 at = ev_rt_now; 3857 at = ev_rt_now;
2769 break; 3858 break;
2770 } 3859 }
2771 3860
… …
2781{ 3870{
2782 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2783 3872
2784 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2785 { 3874 {
2786 int feed_count = 0;
2787
2788 do 3875 do
2789 { 3876 {
2790 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2791 3878
2792 /*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)));*/
… …
2819 } 3906 }
2820} 3907}
2821 3908
2822/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2823/* 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? */
2824static void noinline ecb_cold 3911ecb_noinline ecb_cold
3912static void
2825periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2826{ 3914{
2827 int i; 3915 int i;
2828 3916
2829 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2842 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2843} 3931}
2844#endif 3932#endif
2845 3933
2846/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2847static void noinline ecb_cold 3935ecb_noinline ecb_cold
3936static void
2848timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2849{ 3938{
2850 int i; 3939 int i;
2851 3940
2852 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2861/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2862inline_speed void 3951inline_speed void
2863time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2864{ 3953{
2865#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2866 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2867 { 3956 {
2868 int i; 3957 int i;
2869 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2870 3959
2871 mn_now = get_clock (); 3960 mn_now = get_clock ();
2872 3961
2873 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2874 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2875 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)))
2876 { 3965 {
2877 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2878 return; 3967 return;
2879 } 3968 }
2880 3969
… …
2894 ev_tstamp diff; 3983 ev_tstamp diff;
2895 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2896 3985
2897 diff = odiff - rtmn_diff; 3986 diff = odiff - rtmn_diff;
2898 3987
2899 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)))
2900 return; /* all is well */ 3989 return; /* all is well */
2901 3990
2902 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2903 mn_now = get_clock (); 3992 mn_now = get_clock ();
2904 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2913 else 4002 else
2914#endif 4003#endif
2915 { 4004 {
2916 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2917 4006
2918 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)))
2919 { 4008 {
2920 /* 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 */
2921 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2922#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2923 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2926 4015
2927 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2928 } 4017 }
2929} 4018}
2930 4019
2931void 4020int
2932ev_run (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2933{ 4022{
2934#if EV_FEATURE_API 4023#if EV_FEATURE_API
2935 ++loop_depth; 4024 ++loop_depth;
2936#endif 4025#endif
… …
2946#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2947 ev_verify (EV_A); 4036 ev_verify (EV_A);
2948#endif 4037#endif
2949 4038
2950#ifndef _WIN32 4039#ifndef _WIN32
2951 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2952 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2953 { 4042 {
2954 curpid = getpid (); 4043 curpid = getpid ();
2955 postfork = 1; 4044 postfork = 1;
2956 } 4045 }
2957#endif 4046#endif
2958 4047
2959#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2960 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2961 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2962 if (forkcnt) 4051 if (forkcnt)
2963 { 4052 {
2964 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2965 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2966 } 4055 }
2967#endif 4056#endif
2968 4057
2969#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
2970 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2971 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2972 { 4061 {
2973 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2974 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2975 } 4064 }
2976#endif 4065#endif
2977 4066
2978 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2979 break; 4068 break;
2980 4069
2981 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2982 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2983 loop_fork (EV_A); 4072 loop_fork (EV_A);
2984 4073
2985 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2986 fd_reify (EV_A); 4075 fd_reify (EV_A);
2987 4076
… …
2992 4081
2993 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
2994 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
2995 4084
2996 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
2997 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2998 4087
2999 /* from now on, we want a pipe-wake-up */ 4088 /* from now on, we want a pipe-wake-up */
3000 pipe_write_wanted = 1; 4089 pipe_write_wanted = 1;
3001 4090
3002 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 */
3003 4092
3004 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3005 { 4094 {
3006 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
3007 4108
3008 if (timercnt) 4109 if (timercnt)
3009 { 4110 {
3010 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4111 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3011 if (waittime > to) waittime = to; 4112 if (waittime > to) waittime = to;
… …
3018 if (waittime > to) waittime = to; 4119 if (waittime > to) waittime = to;
3019 } 4120 }
3020#endif 4121#endif
3021 4122
3022 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4123 /* don't let timeouts decrease the waittime below timeout_blocktime */
3023 if (expect_false (waittime < timeout_blocktime)) 4124 if (ecb_expect_false (waittime < timeout_blocktime))
3024 waittime = timeout_blocktime; 4125 waittime = timeout_blocktime;
3025 4126
3026 /* at this point, we NEED to wait, so we have to ensure */ 4127 /* now there are two more special cases left, either we have
3027 /* 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 */
3028 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.)
3029 waittime = backend_mintime; 4135 : backend_mintime;
3030 4136
3031 /* extra check because io_blocktime is commonly 0 */ 4137 /* extra check because io_blocktime is commonly 0 */
3032 if (expect_false (io_blocktime)) 4138 if (ecb_expect_false (io_blocktime))
3033 { 4139 {
3034 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4140 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3035 4141
3036 if (sleeptime > waittime - backend_mintime) 4142 if (sleeptime > waittime - backend_mintime)
3037 sleeptime = waittime - backend_mintime; 4143 sleeptime = waittime - backend_mintime;
3038 4144
3039 if (expect_true (sleeptime > 0.)) 4145 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3040 { 4146 {
3041 ev_sleep (sleeptime); 4147 ev_sleep (sleeptime);
3042 waittime -= sleeptime; 4148 waittime -= sleeptime;
3043 } 4149 }
3044 } 4150 }
… …
3051 backend_poll (EV_A_ waittime); 4157 backend_poll (EV_A_ waittime);
3052 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4158 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3053 4159
3054 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4160 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3055 4161
4162 ECB_MEMORY_FENCE_ACQUIRE;
3056 if (pipe_write_skipped) 4163 if (pipe_write_skipped)
3057 { 4164 {
3058 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)));
3059 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4166 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3060 } 4167 }
3061 4168
3062
3063 /* update ev_rt_now, do magic */ 4169 /* update ev_rt_now, do magic */
3064 time_update (EV_A_ waittime + sleeptime); 4170 time_update (EV_A_ waittime + sleeptime);
3065 } 4171 }
3066 4172
3067 /* queue pending timers and reschedule them */ 4173 /* queue pending timers and reschedule them */
… …
3075 idle_reify (EV_A); 4181 idle_reify (EV_A);
3076#endif 4182#endif
3077 4183
3078#if EV_CHECK_ENABLE 4184#if EV_CHECK_ENABLE
3079 /* queue check watchers, to be executed first */ 4185 /* queue check watchers, to be executed first */
3080 if (expect_false (checkcnt)) 4186 if (ecb_expect_false (checkcnt))
3081 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4187 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3082#endif 4188#endif
3083 4189
3084 EV_INVOKE_PENDING; 4190 EV_INVOKE_PENDING;
3085 } 4191 }
3086 while (expect_true ( 4192 while (ecb_expect_true (
3087 activecnt 4193 activecnt
3088 && !loop_done 4194 && !loop_done
3089 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4195 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3090 )); 4196 ));
3091 4197
… …
3093 loop_done = EVBREAK_CANCEL; 4199 loop_done = EVBREAK_CANCEL;
3094 4200
3095#if EV_FEATURE_API 4201#if EV_FEATURE_API
3096 --loop_depth; 4202 --loop_depth;
3097#endif 4203#endif
4204
4205 return activecnt;
3098} 4206}
3099 4207
3100void 4208void
3101ev_break (EV_P_ int how) 4209ev_break (EV_P_ int how) EV_NOEXCEPT
3102{ 4210{
3103 loop_done = how; 4211 loop_done = how;
3104} 4212}
3105 4213
3106void 4214void
3107ev_ref (EV_P) 4215ev_ref (EV_P) EV_NOEXCEPT
3108{ 4216{
3109 ++activecnt; 4217 ++activecnt;
3110} 4218}
3111 4219
3112void 4220void
3113ev_unref (EV_P) 4221ev_unref (EV_P) EV_NOEXCEPT
3114{ 4222{
3115 --activecnt; 4223 --activecnt;
3116} 4224}
3117 4225
3118void 4226void
3119ev_now_update (EV_P) 4227ev_now_update (EV_P) EV_NOEXCEPT
3120{ 4228{
3121 time_update (EV_A_ 1e100); 4229 time_update (EV_A_ EV_TSTAMP_HUGE);
3122} 4230}
3123 4231
3124void 4232void
3125ev_suspend (EV_P) 4233ev_suspend (EV_P) EV_NOEXCEPT
3126{ 4234{
3127 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3128} 4236}
3129 4237
3130void 4238void
3131ev_resume (EV_P) 4239ev_resume (EV_P) EV_NOEXCEPT
3132{ 4240{
3133 ev_tstamp mn_prev = mn_now; 4241 ev_tstamp mn_prev = mn_now;
3134 4242
3135 ev_now_update (EV_A); 4243 ev_now_update (EV_A);
3136 timers_reschedule (EV_A_ mn_now - mn_prev); 4244 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3153inline_size void 4261inline_size void
3154wlist_del (WL *head, WL elem) 4262wlist_del (WL *head, WL elem)
3155{ 4263{
3156 while (*head) 4264 while (*head)
3157 { 4265 {
3158 if (expect_true (*head == elem)) 4266 if (ecb_expect_true (*head == elem))
3159 { 4267 {
3160 *head = elem->next; 4268 *head = elem->next;
3161 break; 4269 break;
3162 } 4270 }
3163 4271
… …
3175 w->pending = 0; 4283 w->pending = 0;
3176 } 4284 }
3177} 4285}
3178 4286
3179int 4287int
3180ev_clear_pending (EV_P_ void *w) 4288ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3181{ 4289{
3182 W w_ = (W)w; 4290 W w_ = (W)w;
3183 int pending = w_->pending; 4291 int pending = w_->pending;
3184 4292
3185 if (expect_true (pending)) 4293 if (ecb_expect_true (pending))
3186 { 4294 {
3187 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4295 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3188 p->w = (W)&pending_w; 4296 p->w = (W)&pending_w;
3189 w_->pending = 0; 4297 w_->pending = 0;
3190 return p->events; 4298 return p->events;
… …
3217 w->active = 0; 4325 w->active = 0;
3218} 4326}
3219 4327
3220/*****************************************************************************/ 4328/*****************************************************************************/
3221 4329
3222void noinline 4330ecb_noinline
4331void
3223ev_io_start (EV_P_ ev_io *w) 4332ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3224{ 4333{
3225 int fd = w->fd; 4334 int fd = w->fd;
3226 4335
3227 if (expect_false (ev_is_active (w))) 4336 if (ecb_expect_false (ev_is_active (w)))
3228 return; 4337 return;
3229 4338
3230 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4339 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3231 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))));
3232 4341
4342#if EV_VERIFY >= 2
4343 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4344#endif
3233 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
3234 4346
3235 ev_start (EV_A_ (W)w, 1); 4347 ev_start (EV_A_ (W)w, 1);
3236 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4348 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3237 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));
3238 4353
3239 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);
3240 w->events &= ~EV__IOFDSET; 4355 w->events &= ~EV__IOFDSET;
3241 4356
3242 EV_FREQUENT_CHECK; 4357 EV_FREQUENT_CHECK;
3243} 4358}
3244 4359
3245void noinline 4360ecb_noinline
4361void
3246ev_io_stop (EV_P_ ev_io *w) 4362ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3247{ 4363{
3248 clear_pending (EV_A_ (W)w); 4364 clear_pending (EV_A_ (W)w);
3249 if (expect_false (!ev_is_active (w))) 4365 if (ecb_expect_false (!ev_is_active (w)))
3250 return; 4366 return;
3251 4367
3252 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));
3253 4369
4370#if EV_VERIFY >= 2
4371 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4372#endif
3254 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3255 4374
3256 wlist_del (&anfds[w->fd].head, (WL)w); 4375 wlist_del (&anfds[w->fd].head, (WL)w);
3257 ev_stop (EV_A_ (W)w); 4376 ev_stop (EV_A_ (W)w);
3258 4377
3259 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4378 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3260 4379
3261 EV_FREQUENT_CHECK; 4380 EV_FREQUENT_CHECK;
3262} 4381}
3263 4382
3264void noinline 4383ecb_noinline
4384void
3265ev_timer_start (EV_P_ ev_timer *w) 4385ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3266{ 4386{
3267 if (expect_false (ev_is_active (w))) 4387 if (ecb_expect_false (ev_is_active (w)))
3268 return; 4388 return;
3269 4389
3270 ev_at (w) += mn_now; 4390 ev_at (w) += mn_now;
3271 4391
3272 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.));
3273 4393
3274 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3275 4395
3276 ++timercnt; 4396 ++timercnt;
3277 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4397 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3278 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4398 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3279 ANHE_w (timers [ev_active (w)]) = (WT)w; 4399 ANHE_w (timers [ev_active (w)]) = (WT)w;
3280 ANHE_at_cache (timers [ev_active (w)]); 4400 ANHE_at_cache (timers [ev_active (w)]);
3281 upheap (timers, ev_active (w)); 4401 upheap (timers, ev_active (w));
3282 4402
3283 EV_FREQUENT_CHECK; 4403 EV_FREQUENT_CHECK;
3284 4404
3285 /*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));*/
3286} 4406}
3287 4407
3288void noinline 4408ecb_noinline
4409void
3289ev_timer_stop (EV_P_ ev_timer *w) 4410ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3290{ 4411{
3291 clear_pending (EV_A_ (W)w); 4412 clear_pending (EV_A_ (W)w);
3292 if (expect_false (!ev_is_active (w))) 4413 if (ecb_expect_false (!ev_is_active (w)))
3293 return; 4414 return;
3294 4415
3295 EV_FREQUENT_CHECK; 4416 EV_FREQUENT_CHECK;
3296 4417
3297 { 4418 {
… …
3299 4420
3300 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));
3301 4422
3302 --timercnt; 4423 --timercnt;
3303 4424
3304 if (expect_true (active < timercnt + HEAP0)) 4425 if (ecb_expect_true (active < timercnt + HEAP0))
3305 { 4426 {
3306 timers [active] = timers [timercnt + HEAP0]; 4427 timers [active] = timers [timercnt + HEAP0];
3307 adjustheap (timers, timercnt, active); 4428 adjustheap (timers, timercnt, active);
3308 } 4429 }
3309 } 4430 }
… …
3313 ev_stop (EV_A_ (W)w); 4434 ev_stop (EV_A_ (W)w);
3314 4435
3315 EV_FREQUENT_CHECK; 4436 EV_FREQUENT_CHECK;
3316} 4437}
3317 4438
3318void noinline 4439ecb_noinline
4440void
3319ev_timer_again (EV_P_ ev_timer *w) 4441ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3320{ 4442{
3321 EV_FREQUENT_CHECK; 4443 EV_FREQUENT_CHECK;
3322 4444
3323 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3324 4446
… …
3341 4463
3342 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3343} 4465}
3344 4466
3345ev_tstamp 4467ev_tstamp
3346ev_timer_remaining (EV_P_ ev_timer *w) 4468ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3347{ 4469{
3348 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.));
3349} 4471}
3350 4472
3351#if EV_PERIODIC_ENABLE 4473#if EV_PERIODIC_ENABLE
3352void noinline 4474ecb_noinline
4475void
3353ev_periodic_start (EV_P_ ev_periodic *w) 4476ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3354{ 4477{
3355 if (expect_false (ev_is_active (w))) 4478 if (ecb_expect_false (ev_is_active (w)))
3356 return; 4479 return;
4480
4481#if EV_USE_TIMERFD
4482 if (timerfd == -2)
4483 evtimerfd_init (EV_A);
4484#endif
3357 4485
3358 if (w->reschedule_cb) 4486 if (w->reschedule_cb)
3359 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4487 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3360 else if (w->interval) 4488 else if (w->interval)
3361 { 4489 {
… …
3367 4495
3368 EV_FREQUENT_CHECK; 4496 EV_FREQUENT_CHECK;
3369 4497
3370 ++periodiccnt; 4498 ++periodiccnt;
3371 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4499 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3372 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4500 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3373 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4501 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3374 ANHE_at_cache (periodics [ev_active (w)]); 4502 ANHE_at_cache (periodics [ev_active (w)]);
3375 upheap (periodics, ev_active (w)); 4503 upheap (periodics, ev_active (w));
3376 4504
3377 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
3378 4506
3379 /*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));*/
3380} 4508}
3381 4509
3382void noinline 4510ecb_noinline
4511void
3383ev_periodic_stop (EV_P_ ev_periodic *w) 4512ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3384{ 4513{
3385 clear_pending (EV_A_ (W)w); 4514 clear_pending (EV_A_ (W)w);
3386 if (expect_false (!ev_is_active (w))) 4515 if (ecb_expect_false (!ev_is_active (w)))
3387 return; 4516 return;
3388 4517
3389 EV_FREQUENT_CHECK; 4518 EV_FREQUENT_CHECK;
3390 4519
3391 { 4520 {
… …
3393 4522
3394 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));
3395 4524
3396 --periodiccnt; 4525 --periodiccnt;
3397 4526
3398 if (expect_true (active < periodiccnt + HEAP0)) 4527 if (ecb_expect_true (active < periodiccnt + HEAP0))
3399 { 4528 {
3400 periodics [active] = periodics [periodiccnt + HEAP0]; 4529 periodics [active] = periodics [periodiccnt + HEAP0];
3401 adjustheap (periodics, periodiccnt, active); 4530 adjustheap (periodics, periodiccnt, active);
3402 } 4531 }
3403 } 4532 }
… …
3405 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3406 4535
3407 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3408} 4537}
3409 4538
3410void noinline 4539ecb_noinline
4540void
3411ev_periodic_again (EV_P_ ev_periodic *w) 4541ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3412{ 4542{
3413 /* TODO: use adjustheap and recalculation */ 4543 /* TODO: use adjustheap and recalculation */
3414 ev_periodic_stop (EV_A_ w); 4544 ev_periodic_stop (EV_A_ w);
3415 ev_periodic_start (EV_A_ w); 4545 ev_periodic_start (EV_A_ w);
3416} 4546}
… …
3420# define SA_RESTART 0 4550# define SA_RESTART 0
3421#endif 4551#endif
3422 4552
3423#if EV_SIGNAL_ENABLE 4553#if EV_SIGNAL_ENABLE
3424 4554
3425void noinline 4555ecb_noinline
4556void
3426ev_signal_start (EV_P_ ev_signal *w) 4557ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3427{ 4558{
3428 if (expect_false (ev_is_active (w))) 4559 if (ecb_expect_false (ev_is_active (w)))
3429 return; 4560 return;
3430 4561
3431 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));
3432 4563
3433#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3434 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",
3435 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4566 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3436 4567
3437 signals [w->signum - 1].loop = EV_A; 4568 signals [w->signum - 1].loop = EV_A;
4569 ECB_MEMORY_FENCE_RELEASE;
3438#endif 4570#endif
3439 4571
3440 EV_FREQUENT_CHECK; 4572 EV_FREQUENT_CHECK;
3441 4573
3442#if EV_USE_SIGNALFD 4574#if EV_USE_SIGNALFD
… …
3501 } 4633 }
3502 4634
3503 EV_FREQUENT_CHECK; 4635 EV_FREQUENT_CHECK;
3504} 4636}
3505 4637
3506void noinline 4638ecb_noinline
4639void
3507ev_signal_stop (EV_P_ ev_signal *w) 4640ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3508{ 4641{
3509 clear_pending (EV_A_ (W)w); 4642 clear_pending (EV_A_ (W)w);
3510 if (expect_false (!ev_is_active (w))) 4643 if (ecb_expect_false (!ev_is_active (w)))
3511 return; 4644 return;
3512 4645
3513 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3514 4647
3515 wlist_del (&signals [w->signum - 1].head, (WL)w); 4648 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3543#endif 4676#endif
3544 4677
3545#if EV_CHILD_ENABLE 4678#if EV_CHILD_ENABLE
3546 4679
3547void 4680void
3548ev_child_start (EV_P_ ev_child *w) 4681ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3549{ 4682{
3550#if EV_MULTIPLICITY 4683#if EV_MULTIPLICITY
3551 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));
3552#endif 4685#endif
3553 if (expect_false (ev_is_active (w))) 4686 if (ecb_expect_false (ev_is_active (w)))
3554 return; 4687 return;
3555 4688
3556 EV_FREQUENT_CHECK; 4689 EV_FREQUENT_CHECK;
3557 4690
3558 ev_start (EV_A_ (W)w, 1); 4691 ev_start (EV_A_ (W)w, 1);
… …
3560 4693
3561 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
3562} 4695}
3563 4696
3564void 4697void
3565ev_child_stop (EV_P_ ev_child *w) 4698ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3566{ 4699{
3567 clear_pending (EV_A_ (W)w); 4700 clear_pending (EV_A_ (W)w);
3568 if (expect_false (!ev_is_active (w))) 4701 if (ecb_expect_false (!ev_is_active (w)))
3569 return; 4702 return;
3570 4703
3571 EV_FREQUENT_CHECK; 4704 EV_FREQUENT_CHECK;
3572 4705
3573 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4706 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3587 4720
3588#define DEF_STAT_INTERVAL 5.0074891 4721#define DEF_STAT_INTERVAL 5.0074891
3589#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4722#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3590#define MIN_STAT_INTERVAL 0.1074891 4723#define MIN_STAT_INTERVAL 0.1074891
3591 4724
3592static 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);
3593 4726
3594#if EV_USE_INOTIFY 4727#if EV_USE_INOTIFY
3595 4728
3596/* 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 */
3597# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4730# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3598 4731
3599static void noinline 4732ecb_noinline
4733static void
3600infy_add (EV_P_ ev_stat *w) 4734infy_add (EV_P_ ev_stat *w)
3601{ 4735{
3602 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);
3603 4740
3604 if (w->wd >= 0) 4741 if (w->wd >= 0)
3605 { 4742 {
3606 struct statfs sfs; 4743 struct statfs sfs;
3607 4744
… …
3611 4748
3612 if (!fs_2625) 4749 if (!fs_2625)
3613 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4750 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3614 else if (!statfs (w->path, &sfs) 4751 else if (!statfs (w->path, &sfs)
3615 && (sfs.f_type == 0x1373 /* devfs */ 4752 && (sfs.f_type == 0x1373 /* devfs */
4753 || sfs.f_type == 0x4006 /* fat */
4754 || sfs.f_type == 0x4d44 /* msdos */
3616 || 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 */
3617 || sfs.f_type == 0x3153464a /* jfs */ 4759 || sfs.f_type == 0x3153464a /* jfs */
4760 || sfs.f_type == 0x9123683e /* btrfs */
3618 || sfs.f_type == 0x52654973 /* reiser3 */ 4761 || sfs.f_type == 0x52654973 /* reiser3 */
3619 || sfs.f_type == 0x01021994 /* tempfs */ 4762 || sfs.f_type == 0x01021994 /* tmpfs */
3620 || sfs.f_type == 0x58465342 /* xfs */)) 4763 || sfs.f_type == 0x58465342 /* xfs */))
3621 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4764 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3622 else 4765 else
3623 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 */
3624 } 4767 }
… …
3659 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4802 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3660 ev_timer_again (EV_A_ &w->timer); 4803 ev_timer_again (EV_A_ &w->timer);
3661 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4804 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3662} 4805}
3663 4806
3664static void noinline 4807ecb_noinline
4808static void
3665infy_del (EV_P_ ev_stat *w) 4809infy_del (EV_P_ ev_stat *w)
3666{ 4810{
3667 int slot; 4811 int slot;
3668 int wd = w->wd; 4812 int wd = w->wd;
3669 4813
… …
3676 4820
3677 /* remove this watcher, if others are watching it, they will rearm */ 4821 /* remove this watcher, if others are watching it, they will rearm */
3678 inotify_rm_watch (fs_fd, wd); 4822 inotify_rm_watch (fs_fd, wd);
3679} 4823}
3680 4824
3681static void noinline 4825ecb_noinline
4826static void
3682infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4827infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3683{ 4828{
3684 if (slot < 0) 4829 if (slot < 0)
3685 /* overflow, need to check for all hash slots */ 4830 /* overflow, need to check for all hash slots */
3686 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4831 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3722 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4867 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3723 ofs += sizeof (struct inotify_event) + ev->len; 4868 ofs += sizeof (struct inotify_event) + ev->len;
3724 } 4869 }
3725} 4870}
3726 4871
3727inline_size void ecb_cold 4872inline_size ecb_cold
4873void
3728ev_check_2625 (EV_P) 4874ev_check_2625 (EV_P)
3729{ 4875{
3730 /* kernels < 2.6.25 are borked 4876 /* kernels < 2.6.25 are borked
3731 * 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
3732 */ 4878 */
… …
3737} 4883}
3738 4884
3739inline_size int 4885inline_size int
3740infy_newfd (void) 4886infy_newfd (void)
3741{ 4887{
3742#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4888#if defined IN_CLOEXEC && defined IN_NONBLOCK
3743 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4889 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3744 if (fd >= 0) 4890 if (fd >= 0)
3745 return fd; 4891 return fd;
3746#endif 4892#endif
3747 return inotify_init (); 4893 return inotify_init ();
… …
3822#else 4968#else
3823# define EV_LSTAT(p,b) lstat (p, b) 4969# define EV_LSTAT(p,b) lstat (p, b)
3824#endif 4970#endif
3825 4971
3826void 4972void
3827ev_stat_stat (EV_P_ ev_stat *w) 4973ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3828{ 4974{
3829 if (lstat (w->path, &w->attr) < 0) 4975 if (lstat (w->path, &w->attr) < 0)
3830 w->attr.st_nlink = 0; 4976 w->attr.st_nlink = 0;
3831 else if (!w->attr.st_nlink) 4977 else if (!w->attr.st_nlink)
3832 w->attr.st_nlink = 1; 4978 w->attr.st_nlink = 1;
3833} 4979}
3834 4980
3835static void noinline 4981ecb_noinline
4982static void
3836stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4983stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3837{ 4984{
3838 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4985 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3839 4986
3840 ev_statdata prev = w->attr; 4987 ev_statdata prev = w->attr;
… …
3871 ev_feed_event (EV_A_ w, EV_STAT); 5018 ev_feed_event (EV_A_ w, EV_STAT);
3872 } 5019 }
3873} 5020}
3874 5021
3875void 5022void
3876ev_stat_start (EV_P_ ev_stat *w) 5023ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3877{ 5024{
3878 if (expect_false (ev_is_active (w))) 5025 if (ecb_expect_false (ev_is_active (w)))
3879 return; 5026 return;
3880 5027
3881 ev_stat_stat (EV_A_ w); 5028 ev_stat_stat (EV_A_ w);
3882 5029
3883 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5030 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3902 5049
3903 EV_FREQUENT_CHECK; 5050 EV_FREQUENT_CHECK;
3904} 5051}
3905 5052
3906void 5053void
3907ev_stat_stop (EV_P_ ev_stat *w) 5054ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3908{ 5055{
3909 clear_pending (EV_A_ (W)w); 5056 clear_pending (EV_A_ (W)w);
3910 if (expect_false (!ev_is_active (w))) 5057 if (ecb_expect_false (!ev_is_active (w)))
3911 return; 5058 return;
3912 5059
3913 EV_FREQUENT_CHECK; 5060 EV_FREQUENT_CHECK;
3914 5061
3915#if EV_USE_INOTIFY 5062#if EV_USE_INOTIFY
… …
3928} 5075}
3929#endif 5076#endif
3930 5077
3931#if EV_IDLE_ENABLE 5078#if EV_IDLE_ENABLE
3932void 5079void
3933ev_idle_start (EV_P_ ev_idle *w) 5080ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3934{ 5081{
3935 if (expect_false (ev_is_active (w))) 5082 if (ecb_expect_false (ev_is_active (w)))
3936 return; 5083 return;
3937 5084
3938 pri_adjust (EV_A_ (W)w); 5085 pri_adjust (EV_A_ (W)w);
3939 5086
3940 EV_FREQUENT_CHECK; 5087 EV_FREQUENT_CHECK;
… …
3943 int active = ++idlecnt [ABSPRI (w)]; 5090 int active = ++idlecnt [ABSPRI (w)];
3944 5091
3945 ++idleall; 5092 ++idleall;
3946 ev_start (EV_A_ (W)w, active); 5093 ev_start (EV_A_ (W)w, active);
3947 5094
3948 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);
3949 idles [ABSPRI (w)][active - 1] = w; 5096 idles [ABSPRI (w)][active - 1] = w;
3950 } 5097 }
3951 5098
3952 EV_FREQUENT_CHECK; 5099 EV_FREQUENT_CHECK;
3953} 5100}
3954 5101
3955void 5102void
3956ev_idle_stop (EV_P_ ev_idle *w) 5103ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3957{ 5104{
3958 clear_pending (EV_A_ (W)w); 5105 clear_pending (EV_A_ (W)w);
3959 if (expect_false (!ev_is_active (w))) 5106 if (ecb_expect_false (!ev_is_active (w)))
3960 return; 5107 return;
3961 5108
3962 EV_FREQUENT_CHECK; 5109 EV_FREQUENT_CHECK;
3963 5110
3964 { 5111 {
… …
3975} 5122}
3976#endif 5123#endif
3977 5124
3978#if EV_PREPARE_ENABLE 5125#if EV_PREPARE_ENABLE
3979void 5126void
3980ev_prepare_start (EV_P_ ev_prepare *w) 5127ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3981{ 5128{
3982 if (expect_false (ev_is_active (w))) 5129 if (ecb_expect_false (ev_is_active (w)))
3983 return; 5130 return;
3984 5131
3985 EV_FREQUENT_CHECK; 5132 EV_FREQUENT_CHECK;
3986 5133
3987 ev_start (EV_A_ (W)w, ++preparecnt); 5134 ev_start (EV_A_ (W)w, ++preparecnt);
3988 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5135 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3989 prepares [preparecnt - 1] = w; 5136 prepares [preparecnt - 1] = w;
3990 5137
3991 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3992} 5139}
3993 5140
3994void 5141void
3995ev_prepare_stop (EV_P_ ev_prepare *w) 5142ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3996{ 5143{
3997 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3998 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3999 return; 5146 return;
4000 5147
4001 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
4002 5149
4003 { 5150 {
… …
4013} 5160}
4014#endif 5161#endif
4015 5162
4016#if EV_CHECK_ENABLE 5163#if EV_CHECK_ENABLE
4017void 5164void
4018ev_check_start (EV_P_ ev_check *w) 5165ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4019{ 5166{
4020 if (expect_false (ev_is_active (w))) 5167 if (ecb_expect_false (ev_is_active (w)))
4021 return; 5168 return;
4022 5169
4023 EV_FREQUENT_CHECK; 5170 EV_FREQUENT_CHECK;
4024 5171
4025 ev_start (EV_A_ (W)w, ++checkcnt); 5172 ev_start (EV_A_ (W)w, ++checkcnt);
4026 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5173 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4027 checks [checkcnt - 1] = w; 5174 checks [checkcnt - 1] = w;
4028 5175
4029 EV_FREQUENT_CHECK; 5176 EV_FREQUENT_CHECK;
4030} 5177}
4031 5178
4032void 5179void
4033ev_check_stop (EV_P_ ev_check *w) 5180ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4034{ 5181{
4035 clear_pending (EV_A_ (W)w); 5182 clear_pending (EV_A_ (W)w);
4036 if (expect_false (!ev_is_active (w))) 5183 if (ecb_expect_false (!ev_is_active (w)))
4037 return; 5184 return;
4038 5185
4039 EV_FREQUENT_CHECK; 5186 EV_FREQUENT_CHECK;
4040 5187
4041 { 5188 {
… …
4050 EV_FREQUENT_CHECK; 5197 EV_FREQUENT_CHECK;
4051} 5198}
4052#endif 5199#endif
4053 5200
4054#if EV_EMBED_ENABLE 5201#if EV_EMBED_ENABLE
4055void noinline 5202ecb_noinline
5203void
4056ev_embed_sweep (EV_P_ ev_embed *w) 5204ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4057{ 5205{
4058 ev_run (w->other, EVRUN_NOWAIT); 5206 ev_run (w->other, EVRUN_NOWAIT);
4059} 5207}
4060 5208
4061static void 5209static void
… …
4083 ev_run (EV_A_ EVRUN_NOWAIT); 5231 ev_run (EV_A_ EVRUN_NOWAIT);
4084 } 5232 }
4085 } 5233 }
4086} 5234}
4087 5235
5236#if EV_FORK_ENABLE
4088static void 5237static void
4089embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5238embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4090{ 5239{
4091 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));
4092 5241
… …
4099 ev_run (EV_A_ EVRUN_NOWAIT); 5248 ev_run (EV_A_ EVRUN_NOWAIT);
4100 } 5249 }
4101 5250
4102 ev_embed_start (EV_A_ w); 5251 ev_embed_start (EV_A_ w);
4103} 5252}
5253#endif
4104 5254
4105#if 0 5255#if 0
4106static void 5256static void
4107embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5257embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4108{ 5258{
4109 ev_idle_stop (EV_A_ idle); 5259 ev_idle_stop (EV_A_ idle);
4110} 5260}
4111#endif 5261#endif
4112 5262
4113void 5263void
4114ev_embed_start (EV_P_ ev_embed *w) 5264ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4115{ 5265{
4116 if (expect_false (ev_is_active (w))) 5266 if (ecb_expect_false (ev_is_active (w)))
4117 return; 5267 return;
4118 5268
4119 { 5269 {
4120 EV_P = w->other; 5270 EV_P = w->other;
4121 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 ()));
… …
4129 5279
4130 ev_prepare_init (&w->prepare, embed_prepare_cb); 5280 ev_prepare_init (&w->prepare, embed_prepare_cb);
4131 ev_set_priority (&w->prepare, EV_MINPRI); 5281 ev_set_priority (&w->prepare, EV_MINPRI);
4132 ev_prepare_start (EV_A_ &w->prepare); 5282 ev_prepare_start (EV_A_ &w->prepare);
4133 5283
5284#if EV_FORK_ENABLE
4134 ev_fork_init (&w->fork, embed_fork_cb); 5285 ev_fork_init (&w->fork, embed_fork_cb);
4135 ev_fork_start (EV_A_ &w->fork); 5286 ev_fork_start (EV_A_ &w->fork);
5287#endif
4136 5288
4137 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5289 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4138 5290
4139 ev_start (EV_A_ (W)w, 1); 5291 ev_start (EV_A_ (W)w, 1);
4140 5292
4141 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
4142} 5294}
4143 5295
4144void 5296void
4145ev_embed_stop (EV_P_ ev_embed *w) 5297ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4146{ 5298{
4147 clear_pending (EV_A_ (W)w); 5299 clear_pending (EV_A_ (W)w);
4148 if (expect_false (!ev_is_active (w))) 5300 if (ecb_expect_false (!ev_is_active (w)))
4149 return; 5301 return;
4150 5302
4151 EV_FREQUENT_CHECK; 5303 EV_FREQUENT_CHECK;
4152 5304
4153 ev_io_stop (EV_A_ &w->io); 5305 ev_io_stop (EV_A_ &w->io);
4154 ev_prepare_stop (EV_A_ &w->prepare); 5306 ev_prepare_stop (EV_A_ &w->prepare);
5307#if EV_FORK_ENABLE
4155 ev_fork_stop (EV_A_ &w->fork); 5308 ev_fork_stop (EV_A_ &w->fork);
5309#endif
4156 5310
4157 ev_stop (EV_A_ (W)w); 5311 ev_stop (EV_A_ (W)w);
4158 5312
4159 EV_FREQUENT_CHECK; 5313 EV_FREQUENT_CHECK;
4160} 5314}
4161#endif 5315#endif
4162 5316
4163#if EV_FORK_ENABLE 5317#if EV_FORK_ENABLE
4164void 5318void
4165ev_fork_start (EV_P_ ev_fork *w) 5319ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4166{ 5320{
4167 if (expect_false (ev_is_active (w))) 5321 if (ecb_expect_false (ev_is_active (w)))
4168 return; 5322 return;
4169 5323
4170 EV_FREQUENT_CHECK; 5324 EV_FREQUENT_CHECK;
4171 5325
4172 ev_start (EV_A_ (W)w, ++forkcnt); 5326 ev_start (EV_A_ (W)w, ++forkcnt);
4173 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5327 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4174 forks [forkcnt - 1] = w; 5328 forks [forkcnt - 1] = w;
4175 5329
4176 EV_FREQUENT_CHECK; 5330 EV_FREQUENT_CHECK;
4177} 5331}
4178 5332
4179void 5333void
4180ev_fork_stop (EV_P_ ev_fork *w) 5334ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4181{ 5335{
4182 clear_pending (EV_A_ (W)w); 5336 clear_pending (EV_A_ (W)w);
4183 if (expect_false (!ev_is_active (w))) 5337 if (ecb_expect_false (!ev_is_active (w)))
4184 return; 5338 return;
4185 5339
4186 EV_FREQUENT_CHECK; 5340 EV_FREQUENT_CHECK;
4187 5341
4188 { 5342 {
… …
4198} 5352}
4199#endif 5353#endif
4200 5354
4201#if EV_CLEANUP_ENABLE 5355#if EV_CLEANUP_ENABLE
4202void 5356void
4203ev_cleanup_start (EV_P_ ev_cleanup *w) 5357ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4204{ 5358{
4205 if (expect_false (ev_is_active (w))) 5359 if (ecb_expect_false (ev_is_active (w)))
4206 return; 5360 return;
4207 5361
4208 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4209 5363
4210 ev_start (EV_A_ (W)w, ++cleanupcnt); 5364 ev_start (EV_A_ (W)w, ++cleanupcnt);
4211 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5365 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4212 cleanups [cleanupcnt - 1] = w; 5366 cleanups [cleanupcnt - 1] = w;
4213 5367
4214 /* cleanup watchers should never keep a refcount on the loop */ 5368 /* cleanup watchers should never keep a refcount on the loop */
4215 ev_unref (EV_A); 5369 ev_unref (EV_A);
4216 EV_FREQUENT_CHECK; 5370 EV_FREQUENT_CHECK;
4217} 5371}
4218 5372
4219void 5373void
4220ev_cleanup_stop (EV_P_ ev_cleanup *w) 5374ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4221{ 5375{
4222 clear_pending (EV_A_ (W)w); 5376 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w))) 5377 if (ecb_expect_false (!ev_is_active (w)))
4224 return; 5378 return;
4225 5379
4226 EV_FREQUENT_CHECK; 5380 EV_FREQUENT_CHECK;
4227 ev_ref (EV_A); 5381 ev_ref (EV_A);
4228 5382
… …
4239} 5393}
4240#endif 5394#endif
4241 5395
4242#if EV_ASYNC_ENABLE 5396#if EV_ASYNC_ENABLE
4243void 5397void
4244ev_async_start (EV_P_ ev_async *w) 5398ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4245{ 5399{
4246 if (expect_false (ev_is_active (w))) 5400 if (ecb_expect_false (ev_is_active (w)))
4247 return; 5401 return;
4248 5402
4249 w->sent = 0; 5403 w->sent = 0;
4250 5404
4251 evpipe_init (EV_A); 5405 evpipe_init (EV_A);
4252 5406
4253 EV_FREQUENT_CHECK; 5407 EV_FREQUENT_CHECK;
4254 5408
4255 ev_start (EV_A_ (W)w, ++asynccnt); 5409 ev_start (EV_A_ (W)w, ++asynccnt);
4256 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5410 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4257 asyncs [asynccnt - 1] = w; 5411 asyncs [asynccnt - 1] = w;
4258 5412
4259 EV_FREQUENT_CHECK; 5413 EV_FREQUENT_CHECK;
4260} 5414}
4261 5415
4262void 5416void
4263ev_async_stop (EV_P_ ev_async *w) 5417ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4264{ 5418{
4265 clear_pending (EV_A_ (W)w); 5419 clear_pending (EV_A_ (W)w);
4266 if (expect_false (!ev_is_active (w))) 5420 if (ecb_expect_false (!ev_is_active (w)))
4267 return; 5421 return;
4268 5422
4269 EV_FREQUENT_CHECK; 5423 EV_FREQUENT_CHECK;
4270 5424
4271 { 5425 {
… …
4279 5433
4280 EV_FREQUENT_CHECK; 5434 EV_FREQUENT_CHECK;
4281} 5435}
4282 5436
4283void 5437void
4284ev_async_send (EV_P_ ev_async *w) 5438ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4285{ 5439{
4286 w->sent = 1; 5440 w->sent = 1;
4287 evpipe_write (EV_A_ &async_pending); 5441 evpipe_write (EV_A_ &async_pending);
4288} 5442}
4289#endif 5443#endif
… …
4326 5480
4327 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));
4328} 5482}
4329 5483
4330void 5484void
4331ev_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
4332{ 5486{
4333 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));
4334
4335 if (expect_false (!once))
4336 {
4337 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4338 return;
4339 }
4340 5488
4341 once->cb = cb; 5489 once->cb = cb;
4342 once->arg = arg; 5490 once->arg = arg;
4343 5491
4344 ev_init (&once->io, once_cb_io); 5492 ev_init (&once->io, once_cb_io);
… …
4357} 5505}
4358 5506
4359/*****************************************************************************/ 5507/*****************************************************************************/
4360 5508
4361#if EV_WALK_ENABLE 5509#if EV_WALK_ENABLE
4362void ecb_cold 5510ecb_cold
5511void
4363ev_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
4364{ 5513{
4365 int i, j; 5514 int i, j;
4366 ev_watcher_list *wl, *wn; 5515 ev_watcher_list *wl, *wn;
4367 5516
4368 if (types & (EV_IO | EV_EMBED)) 5517 if (types & (EV_IO | EV_EMBED))

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