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Comparing libev/ev.c (file contents):
Revision 1.350 by root, Sat Oct 16 00:59:56 2010 UTC vs.
Revision 1.521 by root, Sat Dec 28 07:47:35 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# else 115# else
114# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
116# endif 118# endif
117 119
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
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
121# endif 141# endif
122# else 142# else
… …
157# endif 177# endif
158# else 178# else
159# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
161# endif 181# endif
162 182
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
163#endif 190# endif
164 191
165#include <math.h> 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
203
166#include <stdlib.h> 204#include <stdlib.h>
167#include <string.h> 205#include <string.h>
168#include <fcntl.h> 206#include <fcntl.h>
169#include <stddef.h> 207#include <stddef.h>
170 208
… …
180 218
181#ifdef EV_H 219#ifdef EV_H
182# include EV_H 220# include EV_H
183#else 221#else
184# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
185#endif 234#endif
186 235
187#ifndef _WIN32 236#ifndef _WIN32
188# include <sys/time.h> 237# include <sys/time.h>
189# include <sys/wait.h> 238# include <sys/wait.h>
190# include <unistd.h> 239# include <unistd.h>
191#else 240#else
192# include <io.h> 241# include <io.h>
193# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
194# include <windows.h> 244# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
197# endif 247# endif
198# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
199#endif 249#endif
200 250
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
208
209/* 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 */
210 252
211/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 254#if defined EV_NSIG
213/* use what's provided */ 255/* use what's provided */
214#elif defined (NSIG) 256#elif defined NSIG
215# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 258#elif defined _NSIG
217# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 260#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 262#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 266#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 268#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 272#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 274#else
233# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 276#endif
235/* but consider reporting it, too! :) */ 277
236# define EV_NSIG 65 278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
237#endif 280#endif
238 281
239#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 285# else
243# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
244# endif 287# endif
245#endif 288#endif
246 289
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
247#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 302# else
251# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
252# endif 304# endif
253#endif 305#endif
… …
290 342
291#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
292# define EV_USE_PORT 0 344# define EV_USE_PORT 0
293#endif 345#endif
294 346
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
295#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
297# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
298# else 366# else
299# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
322# else 390# else
323# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
324# endif 392# endif
325#endif 393#endif
326 394
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
327#if 0 /* debugging */ 403#if 0 /* debugging */
328# define EV_VERIFY 3 404# define EV_VERIFY 3
329# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
330# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
331#endif 407#endif
… …
340 416
341#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 419#endif
344 420
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
345/* 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, */
346/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 440# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
353# else 446# else
354# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
356# endif 449# endif
357#endif 450#endif
358 451
359/* 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 */
360 453
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
370#endif 457#endif
371 458
… …
377#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
378# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
380#endif 467#endif
381 468
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
382#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 480# include <sys/select.h>
385# endif 481# endif
386#endif 482#endif
387 483
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
506# endif
507#endif
508
388#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 510# include <sys/statfs.h>
391# include <sys/inotify.h> 511# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
396# endif 516# endif
397#endif 517#endif
398 518
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif
402
403#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
404/* 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 */
405# include <stdint.h> 521# include <stdint.h>
406# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
408# endif 524# endif
409# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
411# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
412# else 528# else
413# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
414# endif 530# endif
415# endif 531# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 533#endif
424 534
425#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
426/* 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 */
427# include <stdint.h> 537# include <stdint.h>
428# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
430# endif 540# endif
431# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
433# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
434# else 544# else
435# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
436# endif 546# endif
437# endif 547# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
442 549
443struct signalfd_siginfo 550struct signalfd_siginfo
444{ 551{
445 uint32_t ssi_signo; 552 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
447}; 554};
448# ifdef __cplusplus 555#endif
449} 556
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
450# endif 564# endif
451#endif 565#endif
452 566
453/**/ 567/*****************************************************************************/
454 568
455#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
456# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
457#else 571#else
458# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
459#endif 573#endif
460 574
461/* 575/*
462 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
463 * It is added to ev_rt_now when scheduling periodics
464 * to ensure progress, time-wise, even when rounding
465 * errors are against us.
466 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
467 * Better solutions welcome.
468 */ 578 */
469#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470 581
471#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) */
472#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) */
473 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 597# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 598# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
476 602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
477#if __GNUC__ >= 4 658 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
480#else 674#else
481# define expect(expr,value) (expr) 675 #include <inttypes.h>
482# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
484# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
485# endif 681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
486#endif 692 #endif
693#endif
487 694
695/* many compilers define _GNUC_ to some versions but then only implement
696 * what their idiot authors think are the "more important" extensions,
697 * causing enormous grief in return for some better fake benchmark numbers.
698 * or so.
699 * we try to detect these and simply assume they are not gcc - if they have
700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
490#define inline_size static inline 1640#define inline_size ecb_inline
491 1641
492#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
493# define inline_speed static inline 1643# define inline_speed ecb_inline
494#else 1644#else
495# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
496#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
497 1713
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1715
500#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
502#else 1718#else
503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif 1720#endif
505 1721
506#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
507#define EMPTY2(a,b) /* used to suppress some warnings */
508 1723
509typedef ev_watcher *W; 1724typedef ev_watcher *W;
510typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
511typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
512 1727
… …
537# include "ev_win32.c" 1752# include "ev_win32.c"
538#endif 1753#endif
539 1754
540/*****************************************************************************/ 1755/*****************************************************************************/
541 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1761/* define a suitable floor function (only used by periodics atm) */
1762
1763#if EV_USE_FLOOR
1764# include <math.h>
1765# define ev_floor(v) floor (v)
1766#else
1767
1768#include <float.h>
1769
1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1772static ev_tstamp
1773ev_floor (ev_tstamp v)
1774{
1775 /* the choice of shift factor is not terribly important */
1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1778#else
1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1780#endif
1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1790 /* argument too large for an unsigned long? then reduce it */
1791 if (ecb_expect_false (v >= shift))
1792 {
1793 ev_tstamp f;
1794
1795 if (v == v - 1.)
1796 return v; /* very large numbers are assumed to be integer */
1797
1798 f = shift * ev_floor (v * (1. / shift));
1799 return f + ev_floor (v - f);
1800 }
1801
1802 /* fits into an unsigned long */
1803 return (unsigned long)v;
1804}
1805
1806#endif
1807
1808/*****************************************************************************/
1809
1810#ifdef __linux
1811# include <sys/utsname.h>
1812#endif
1813
1814ecb_noinline ecb_cold
1815static unsigned int
1816ev_linux_version (void)
1817{
1818#ifdef __linux
1819 unsigned int v = 0;
1820 struct utsname buf;
1821 int i;
1822 char *p = buf.release;
1823
1824 if (uname (&buf))
1825 return 0;
1826
1827 for (i = 3+1; --i; )
1828 {
1829 unsigned int c = 0;
1830
1831 for (;;)
1832 {
1833 if (*p >= '0' && *p <= '9')
1834 c = c * 10 + *p++ - '0';
1835 else
1836 {
1837 p += *p == '.';
1838 break;
1839 }
1840 }
1841
1842 v = (v << 8) | c;
1843 }
1844
1845 return v;
1846#else
1847 return 0;
1848#endif
1849}
1850
1851/*****************************************************************************/
1852
542#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
543static void noinline 1854ecb_noinline ecb_cold
1855static void
544ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
545{ 1857{
546 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
547} 1859}
548#endif 1860#endif
549 1861
550static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1863
1864ecb_cold
552void 1865void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1867{
555 syserr_cb = cb; 1868 syserr_cb = cb;
556} 1869}
557 1870
558static void noinline 1871ecb_noinline ecb_cold
1872static void
559ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
560{ 1874{
561 if (!msg) 1875 if (!msg)
562 msg = "(libev) system error"; 1876 msg = "(libev) system error";
563 1877
564 if (syserr_cb) 1878 if (syserr_cb)
565 syserr_cb (msg); 1879 syserr_cb (msg);
566 else 1880 else
567 { 1881 {
568#if EV_AVOID_STDIO 1882#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 1883 ev_printerr (msg);
572 ev_printerr (": "); 1884 ev_printerr (": ");
573 ev_printerr (err); 1885 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 1886 ev_printerr ("\n");
575#else 1887#else
576 perror (msg); 1888 perror (msg);
577#endif 1889#endif
578 abort (); 1890 abort ();
579 } 1891 }
580} 1892}
581 1893
582static void * 1894static void *
583ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 1896{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
591 */ 1902 */
592 1903
593 if (size) 1904 if (size)
594 return realloc (ptr, size); 1905 return realloc (ptr, size);
595 1906
596 free (ptr); 1907 free (ptr);
597 return 0; 1908 return 0;
598#endif
599} 1909}
600 1910
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 1912
1913ecb_cold
603void 1914void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 1916{
606 alloc = cb; 1917 alloc = cb;
607} 1918}
608 1919
609inline_speed void * 1920inline_speed void *
… …
612 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
613 1924
614 if (!ptr && size) 1925 if (!ptr && size)
615 { 1926 {
616#if EV_AVOID_STDIO 1927#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 1929#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 1931#endif
621 abort (); 1932 abort ();
622 } 1933 }
623 1934
624 return ptr; 1935 return ptr;
… …
636typedef struct 1947typedef struct
637{ 1948{
638 WL head; 1949 WL head;
639 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
642 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
643#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 1956#endif
646#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
648#endif 1962#endif
649} ANFD; 1963} ANFD;
650 1964
651/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
652typedef struct 1966typedef struct
… …
694 #undef VAR 2008 #undef VAR
695 }; 2009 };
696 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
697 2011
698 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 2014
701#else 2015#else
702 2016
703 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
704 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 2019 #include "ev_vars.h"
706 #undef VAR 2020 #undef VAR
707 2021
708 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
709 2023
710#endif 2024#endif
711 2025
712#if EV_FEATURE_API 2026#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
714# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else 2030#else
717# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 2034#endif
721 2035
722#define EVUNLOOP_RECURSE 0x80 2036#define EVBREAK_RECURSE 0x80
723 2037
724/*****************************************************************************/ 2038/*****************************************************************************/
725 2039
726#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
727ev_tstamp 2041ev_tstamp
728ev_time (void) 2042ev_time (void) EV_NOEXCEPT
729{ 2043{
730#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
732 { 2046 {
733 struct timespec ts; 2047 struct timespec ts;
734 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
735 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
736 } 2050 }
737#endif 2051#endif
738 2052
2053 {
739 struct timeval tv; 2054 struct timeval tv;
740 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
741 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
742} 2058}
743#endif 2059#endif
744 2060
745inline_size ev_tstamp 2061inline_size ev_tstamp
746get_clock (void) 2062get_clock (void)
747{ 2063{
748#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
750 { 2066 {
751 struct timespec ts; 2067 struct timespec ts;
752 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
753 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
754 } 2070 }
755#endif 2071#endif
756 2072
757 return ev_time (); 2073 return ev_time ();
758} 2074}
759 2075
760#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
761ev_tstamp 2077ev_tstamp
762ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
763{ 2079{
764 return ev_rt_now; 2080 return ev_rt_now;
765} 2081}
766#endif 2082#endif
767 2083
768void 2084void
769ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 2086{
771 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
772 { 2088 {
773#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
774 struct timespec ts; 2090 struct timespec ts;
775 2091
776 EV_TS_SET (ts, delay); 2092 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2098#else
781 struct timeval tv; 2099 struct timeval tv;
782 2100
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
… …
802 2120
803 do 2121 do
804 ncur <<= 1; 2122 ncur <<= 1;
805 while (cnt > ncur); 2123 while (cnt > ncur);
806 2124
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 2127 {
810 ncur *= elem; 2128 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
814 } 2132 }
815 2133
816 return ncur; 2134 return ncur;
817} 2135}
818 2136
819static noinline void * 2137ecb_noinline ecb_cold
2138static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
821{ 2140{
822 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
824} 2143}
825 2144
2145#define array_needsize_noinit(base,offset,count)
2146
826#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
828 2149
829#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
831 { \ 2152 { \
832 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
836 } 2157 }
837 2158
838#if 0 2159#if 0
839#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
840 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
849 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 2171
851/*****************************************************************************/ 2172/*****************************************************************************/
852 2173
853/* dummy callback for pending events */ 2174/* dummy callback for pending events */
854static void noinline 2175ecb_noinline
2176static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 2178{
857} 2179}
858 2180
859void noinline 2181ecb_noinline
2182void
860ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2184{
862 W w_ = (W)w; 2185 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
864 2187
865 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
866 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
867 else 2190 else
868 { 2191 {
869 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
871 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
873 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
874} 2199}
875 2200
876inline_speed void 2201inline_speed void
877feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
878{ 2203{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
880 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
881} 2206}
882 2207
883inline_size void 2208inline_size void
884feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
919inline_speed void 2244inline_speed void
920fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
921{ 2246{
922 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
923 2248
924 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
926} 2251}
927 2252
928void 2253void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2255{
931 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
933} 2258}
934 2259
… …
937inline_size void 2262inline_size void
938fd_reify (EV_P) 2263fd_reify (EV_P)
939{ 2264{
940 int i; 2265 int i;
941 2266
2267 /* most backends do not modify the fdchanges list in backend_modfiy.
2268 * except io_uring, which has fixed-size buffers which might force us
2269 * to handle events in backend_modify, causing fdchangesd to be amended,
2270 * which could result in an endless loop.
2271 * to avoid this, we do not dynamically handle fds that were added
2272 * during fd_reify. that menas thast for those backends, fdchangecnt
2273 * might be non-zero during poll, which must cause them to not block.
2274 * to not put too much of a burden on other backends, this detail
2275 * needs to be handled in the backend.
2276 */
2277 int changecnt = fdchangecnt;
2278
2279#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
942 for (i = 0; i < fdchangecnt; ++i) 2280 for (i = 0; i < changecnt; ++i)
2281 {
2282 int fd = fdchanges [i];
2283 ANFD *anfd = anfds + fd;
2284
2285 if (anfd->reify & EV__IOFDSET && anfd->head)
2286 {
2287 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2288
2289 if (handle != anfd->handle)
2290 {
2291 unsigned long arg;
2292
2293 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2294
2295 /* handle changed, but fd didn't - we need to do it in two steps */
2296 backend_modify (EV_A_ fd, anfd->events, 0);
2297 anfd->events = 0;
2298 anfd->handle = handle;
2299 }
2300 }
2301 }
2302#endif
2303
2304 for (i = 0; i < changecnt; ++i)
943 { 2305 {
944 int fd = fdchanges [i]; 2306 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2307 ANFD *anfd = anfds + fd;
946 ev_io *w; 2308 ev_io *w;
947 2309
948 unsigned char o_events = anfd->events; 2310 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 2311 unsigned char o_reify = anfd->reify;
950 2312
951 anfd->reify = 0; 2313 anfd->reify = 0;
952 2314
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2315 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 2316 {
964 anfd->events = 0; 2317 anfd->events = 0;
965 2318
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2319 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
967 anfd->events |= (unsigned char)w->events; 2320 anfd->events |= (unsigned char)w->events;
968 2321
969 if (o_events !=anfd-> events) 2322 if (o_events != anfd->events)
970 o_reify = EV__IOFDSET; /* actually |= */ 2323 o_reify = EV__IOFDSET; /* actually |= */
971 } 2324 }
972 2325
973 if (o_reify & EV__IOFDSET) 2326 if (o_reify & EV__IOFDSET)
974 backend_modify (EV_A_ fd, o_events, anfd->events); 2327 backend_modify (EV_A_ fd, o_events, anfd->events);
975 } 2328 }
976 2329
2330 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2331 * this is a rare case (see beginning comment in this function), so we copy them to the
2332 * front and hope the backend handles this case.
2333 */
2334 if (ecb_expect_false (fdchangecnt != changecnt))
2335 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2336
977 fdchangecnt = 0; 2337 fdchangecnt -= changecnt;
978} 2338}
979 2339
980/* something about the given fd changed */ 2340/* something about the given fd changed */
981inline_size void 2341inline_size
2342void
982fd_change (EV_P_ int fd, int flags) 2343fd_change (EV_P_ int fd, int flags)
983{ 2344{
984 unsigned char reify = anfds [fd].reify; 2345 unsigned char reify = anfds [fd].reify;
985 anfds [fd].reify |= flags; 2346 anfds [fd].reify |= flags;
986 2347
987 if (expect_true (!reify)) 2348 if (ecb_expect_true (!reify))
988 { 2349 {
989 ++fdchangecnt; 2350 ++fdchangecnt;
990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2351 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
991 fdchanges [fdchangecnt - 1] = fd; 2352 fdchanges [fdchangecnt - 1] = fd;
992 } 2353 }
993} 2354}
994 2355
995/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2356/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996inline_speed void 2357inline_speed ecb_cold void
997fd_kill (EV_P_ int fd) 2358fd_kill (EV_P_ int fd)
998{ 2359{
999 ev_io *w; 2360 ev_io *w;
1000 2361
1001 while ((w = (ev_io *)anfds [fd].head)) 2362 while ((w = (ev_io *)anfds [fd].head))
… …
1004 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2365 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1005 } 2366 }
1006} 2367}
1007 2368
1008/* check whether the given fd is actually valid, for error recovery */ 2369/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 2370inline_size ecb_cold int
1010fd_valid (int fd) 2371fd_valid (int fd)
1011{ 2372{
1012#ifdef _WIN32 2373#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2374 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 2375#else
1015 return fcntl (fd, F_GETFD) != -1; 2376 return fcntl (fd, F_GETFD) != -1;
1016#endif 2377#endif
1017} 2378}
1018 2379
1019/* called on EBADF to verify fds */ 2380/* called on EBADF to verify fds */
1020static void noinline 2381ecb_noinline ecb_cold
2382static void
1021fd_ebadf (EV_P) 2383fd_ebadf (EV_P)
1022{ 2384{
1023 int fd; 2385 int fd;
1024 2386
1025 for (fd = 0; fd < anfdmax; ++fd) 2387 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 2389 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 2390 fd_kill (EV_A_ fd);
1029} 2391}
1030 2392
1031/* called on ENOMEM in select/poll to kill some fds and retry */ 2393/* called on ENOMEM in select/poll to kill some fds and retry */
1032static void noinline 2394ecb_noinline ecb_cold
2395static void
1033fd_enomem (EV_P) 2396fd_enomem (EV_P)
1034{ 2397{
1035 int fd; 2398 int fd;
1036 2399
1037 for (fd = anfdmax; fd--; ) 2400 for (fd = anfdmax; fd--; )
… …
1041 break; 2404 break;
1042 } 2405 }
1043} 2406}
1044 2407
1045/* usually called after fork if backend needs to re-arm all fds from scratch */ 2408/* usually called after fork if backend needs to re-arm all fds from scratch */
1046static void noinline 2409ecb_noinline
2410static void
1047fd_rearm_all (EV_P) 2411fd_rearm_all (EV_P)
1048{ 2412{
1049 int fd; 2413 int fd;
1050 2414
1051 for (fd = 0; fd < anfdmax; ++fd) 2415 for (fd = 0; fd < anfdmax; ++fd)
… …
1104 ev_tstamp minat; 2468 ev_tstamp minat;
1105 ANHE *minpos; 2469 ANHE *minpos;
1106 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2470 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1107 2471
1108 /* find minimum child */ 2472 /* find minimum child */
1109 if (expect_true (pos + DHEAP - 1 < E)) 2473 if (ecb_expect_true (pos + DHEAP - 1 < E))
1110 { 2474 {
1111 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2475 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1112 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2476 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1113 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2477 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1114 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2478 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1115 } 2479 }
1116 else if (pos < E) 2480 else if (pos < E)
1117 { 2481 {
1118 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2482 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1119 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2483 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1120 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2484 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1121 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2485 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1122 } 2486 }
1123 else 2487 else
1124 break; 2488 break;
1125 2489
1126 if (ANHE_at (he) <= minat) 2490 if (ANHE_at (he) <= minat)
… …
1134 2498
1135 heap [k] = he; 2499 heap [k] = he;
1136 ev_active (ANHE_w (he)) = k; 2500 ev_active (ANHE_w (he)) = k;
1137} 2501}
1138 2502
1139#else /* 4HEAP */ 2503#else /* not 4HEAP */
1140 2504
1141#define HEAP0 1 2505#define HEAP0 1
1142#define HPARENT(k) ((k) >> 1) 2506#define HPARENT(k) ((k) >> 1)
1143#define UPHEAP_DONE(p,k) (!(p)) 2507#define UPHEAP_DONE(p,k) (!(p))
1144 2508
… …
1232 2596
1233/*****************************************************************************/ 2597/*****************************************************************************/
1234 2598
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2599#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2600
1237static void noinline 2601ecb_noinline ecb_cold
2602static void
1238evpipe_init (EV_P) 2603evpipe_init (EV_P)
1239{ 2604{
1240 if (!ev_is_active (&pipe_w)) 2605 if (!ev_is_active (&pipe_w))
1241 { 2606 {
2607 int fds [2];
2608
1242# if EV_USE_EVENTFD 2609# if EV_USE_EVENTFD
2610 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2611 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2612 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2613 fds [1] = eventfd (0, 0);
1246 2614
1247 if (evfd >= 0) 2615 if (fds [1] < 0)
2616# endif
1248 { 2617 {
2618 while (pipe (fds))
2619 ev_syserr ("(libev) error creating signal/async pipe");
2620
2621 fd_intern (fds [0]);
2622 }
2623
1249 evpipe [0] = -1; 2624 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2625
1251 ev_io_set (&pipe_w, evfd, EV_READ); 2626 if (evpipe [1] < 0)
2627 evpipe [1] = fds [1]; /* first call, set write fd */
2628 else
2629 {
2630 /* on subsequent calls, do not change evpipe [1] */
2631 /* so that evpipe_write can always rely on its value. */
2632 /* this branch does not do anything sensible on windows, */
2633 /* so must not be executed on windows */
2634
2635 dup2 (fds [1], evpipe [1]);
2636 close (fds [1]);
2637 }
2638
2639 fd_intern (evpipe [1]);
2640
2641 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2642 ev_io_start (EV_A_ &pipe_w);
2643 ev_unref (EV_A); /* watcher should not keep loop alive */
2644 }
2645}
2646
2647inline_speed void
2648evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2649{
2650 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2651
2652 if (ecb_expect_true (*flag))
2653 return;
2654
2655 *flag = 1;
2656 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2657
2658 pipe_write_skipped = 1;
2659
2660 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2661
2662 if (pipe_write_wanted)
2663 {
2664 int old_errno;
2665
2666 pipe_write_skipped = 0;
2667 ECB_MEMORY_FENCE_RELEASE;
2668
2669 old_errno = errno; /* save errno because write will clobber it */
2670
2671#if EV_USE_EVENTFD
2672 if (evpipe [0] < 0)
2673 {
2674 uint64_t counter = 1;
2675 write (evpipe [1], &counter, sizeof (uint64_t));
1252 } 2676 }
1253 else 2677 else
1254# endif 2678#endif
1255 { 2679 {
1256 while (pipe (evpipe)) 2680#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2681 WSABUF buf;
1258 2682 DWORD sent;
1259 fd_intern (evpipe [0]); 2683 buf.buf = (char *)&buf;
1260 fd_intern (evpipe [1]); 2684 buf.len = 1;
1261 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2685 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2686#else
2687 write (evpipe [1], &(evpipe [1]), 1);
2688#endif
1262 } 2689 }
1263
1264 ev_io_start (EV_A_ &pipe_w);
1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1266 }
1267}
1268
1269inline_size void
1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271{
1272 if (!*flag)
1273 {
1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1276
1277 *flag = 1;
1278
1279#if EV_USE_EVENTFD
1280 if (evfd >= 0)
1281 {
1282 uint64_t counter = 1;
1283 write (evfd, &counter, sizeof (uint64_t));
1284 }
1285 else
1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1292 write (evpipe [1], &dummy, 1);
1293 2690
1294 errno = old_errno; 2691 errno = old_errno;
1295 } 2692 }
1296} 2693}
1297 2694
… …
1300static void 2697static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2698pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2699{
1303 int i; 2700 int i;
1304 2701
2702 if (revents & EV_READ)
2703 {
1305#if EV_USE_EVENTFD 2704#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2705 if (evpipe [0] < 0)
1307 { 2706 {
1308 uint64_t counter; 2707 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2708 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2709 }
1311 else 2710 else
1312#endif 2711#endif
1313 { 2712 {
1314 char dummy; 2713 char dummy[4];
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2714#ifdef _WIN32
2715 WSABUF buf;
2716 DWORD recvd;
2717 DWORD flags = 0;
2718 buf.buf = dummy;
2719 buf.len = sizeof (dummy);
2720 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2721#else
1316 read (evpipe [0], &dummy, 1); 2722 read (evpipe [0], &dummy, sizeof (dummy));
2723#endif
2724 }
1317 } 2725 }
1318 2726
2727 pipe_write_skipped = 0;
2728
2729 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2730
2731#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2732 if (sig_pending)
1320 { 2733 {
1321 sig_pending = 0; 2734 sig_pending = 0;
1322 2735
2736 ECB_MEMORY_FENCE;
2737
1323 for (i = EV_NSIG - 1; i--; ) 2738 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2739 if (ecb_expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2740 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2741 }
2742#endif
1327 2743
1328#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1329 if (async_pending) 2745 if (async_pending)
1330 { 2746 {
1331 async_pending = 0; 2747 async_pending = 0;
2748
2749 ECB_MEMORY_FENCE;
1332 2750
1333 for (i = asynccnt; i--; ) 2751 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2752 if (asyncs [i]->sent)
1335 { 2753 {
1336 asyncs [i]->sent = 0; 2754 asyncs [i]->sent = 0;
2755 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2756 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2757 }
1339 } 2758 }
1340#endif 2759#endif
1341} 2760}
1342 2761
1343/*****************************************************************************/ 2762/*****************************************************************************/
1344 2763
2764void
2765ev_feed_signal (int signum) EV_NOEXCEPT
2766{
2767#if EV_MULTIPLICITY
2768 EV_P;
2769 ECB_MEMORY_FENCE_ACQUIRE;
2770 EV_A = signals [signum - 1].loop;
2771
2772 if (!EV_A)
2773 return;
2774#endif
2775
2776 signals [signum - 1].pending = 1;
2777 evpipe_write (EV_A_ &sig_pending);
2778}
2779
1345static void 2780static void
1346ev_sighandler (int signum) 2781ev_sighandler (int signum)
1347{ 2782{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2783#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2784 signal (signum, ev_sighandler);
1354#endif 2785#endif
1355 2786
1356 signals [signum - 1].pending = 1; 2787 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2788}
1359 2789
1360void noinline 2790ecb_noinline
2791void
1361ev_feed_signal_event (EV_P_ int signum) 2792ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1362{ 2793{
1363 WL w; 2794 WL w;
1364 2795
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2796 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2797 return;
1367 2798
1368 --signum; 2799 --signum;
1369 2800
1370#if EV_MULTIPLICITY 2801#if EV_MULTIPLICITY
1371 /* it is permissible to try to feed a signal to the wrong loop */ 2802 /* it is permissible to try to feed a signal to the wrong loop */
1372 /* or, likely more useful, feeding a signal nobody is waiting for */ 2803 /* or, likely more useful, feeding a signal nobody is waiting for */
1373 2804
1374 if (expect_false (signals [signum].loop != EV_A)) 2805 if (ecb_expect_false (signals [signum].loop != EV_A))
1375 return; 2806 return;
1376#endif 2807#endif
1377 2808
1378 signals [signum].pending = 0; 2809 signals [signum].pending = 0;
2810 ECB_MEMORY_FENCE_RELEASE;
1379 2811
1380 for (w = signals [signum].head; w; w = w->next) 2812 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2813 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2814}
1383 2815
… …
1462 2894
1463#endif 2895#endif
1464 2896
1465/*****************************************************************************/ 2897/*****************************************************************************/
1466 2898
2899#if EV_USE_TIMERFD
2900
2901static void periodics_reschedule (EV_P);
2902
2903static void
2904timerfdcb (EV_P_ ev_io *iow, int revents)
2905{
2906 struct itimerspec its = { 0 };
2907
2908 /* since we can't easily come zup with a (portable) maximum value of time_t,
2909 * we wake up once per month, which hopefully is rare enough to not
2910 * be a problem. */
2911 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2912 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2913
2914 ev_rt_now = ev_time ();
2915 /* periodics_reschedule only needs ev_rt_now */
2916 /* but maybe in the future we want the full treatment. */
2917 /*
2918 now_floor = EV_TS_CONST (0.);
2919 time_update (EV_A_ EV_TSTAMP_HUGE);
2920 */
2921 periodics_reschedule (EV_A);
2922}
2923
2924ecb_noinline ecb_cold
2925static void
2926evtimerfd_init (EV_P)
2927{
2928 if (!ev_is_active (&timerfd_w))
2929 {
2930 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2931
2932 if (timerfd >= 0)
2933 {
2934 fd_intern (timerfd); /* just to be sure */
2935
2936 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2937 ev_set_priority (&timerfd_w, EV_MINPRI);
2938 ev_io_start (EV_A_ &timerfd_w);
2939 ev_unref (EV_A); /* watcher should not keep loop alive */
2940
2941 /* (re-) arm timer */
2942 timerfdcb (EV_A_ 0, 0);
2943 }
2944 }
2945}
2946
2947#endif
2948
2949/*****************************************************************************/
2950
2951#if EV_USE_IOCP
2952# include "ev_iocp.c"
2953#endif
1467#if EV_USE_PORT 2954#if EV_USE_PORT
1468# include "ev_port.c" 2955# include "ev_port.c"
1469#endif 2956#endif
1470#if EV_USE_KQUEUE 2957#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 2958# include "ev_kqueue.c"
1472#endif 2959#endif
1473#if EV_USE_EPOLL 2960#if EV_USE_EPOLL
1474# include "ev_epoll.c" 2961# include "ev_epoll.c"
1475#endif 2962#endif
2963#if EV_USE_LINUXAIO
2964# include "ev_linuxaio.c"
2965#endif
2966#if EV_USE_IOURING
2967# include "ev_iouring.c"
2968#endif
1476#if EV_USE_POLL 2969#if EV_USE_POLL
1477# include "ev_poll.c" 2970# include "ev_poll.c"
1478#endif 2971#endif
1479#if EV_USE_SELECT 2972#if EV_USE_SELECT
1480# include "ev_select.c" 2973# include "ev_select.c"
1481#endif 2974#endif
1482 2975
1483int 2976ecb_cold int
1484ev_version_major (void) 2977ev_version_major (void) EV_NOEXCEPT
1485{ 2978{
1486 return EV_VERSION_MAJOR; 2979 return EV_VERSION_MAJOR;
1487} 2980}
1488 2981
1489int 2982ecb_cold int
1490ev_version_minor (void) 2983ev_version_minor (void) EV_NOEXCEPT
1491{ 2984{
1492 return EV_VERSION_MINOR; 2985 return EV_VERSION_MINOR;
1493} 2986}
1494 2987
1495/* return true if we are running with elevated privileges and should ignore env variables */ 2988/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 2989inline_size ecb_cold int
1497enable_secure (void) 2990enable_secure (void)
1498{ 2991{
1499#ifdef _WIN32 2992#ifdef _WIN32
1500 return 0; 2993 return 0;
1501#else 2994#else
1502 return getuid () != geteuid () 2995 return getuid () != geteuid ()
1503 || getgid () != getegid (); 2996 || getgid () != getegid ();
1504#endif 2997#endif
1505} 2998}
1506 2999
3000ecb_cold
1507unsigned int 3001unsigned int
1508ev_supported_backends (void) 3002ev_supported_backends (void) EV_NOEXCEPT
1509{ 3003{
1510 unsigned int flags = 0; 3004 unsigned int flags = 0;
1511 3005
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3006 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3007 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1514 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3008 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1515 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3009 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3010 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1517 3011 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3012 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3013
1518 return flags; 3014 return flags;
1519} 3015}
1520 3016
3017ecb_cold
1521unsigned int 3018unsigned int
1522ev_recommended_backends (void) 3019ev_recommended_backends (void) EV_NOEXCEPT
1523{ 3020{
1524 unsigned int flags = ev_supported_backends (); 3021 unsigned int flags = ev_supported_backends ();
1525 3022
1526#ifndef __NetBSD__ 3023#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 3024 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 3032#endif
1536#ifdef __FreeBSD__ 3033#ifdef __FreeBSD__
1537 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3034 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1538#endif 3035#endif
1539 3036
3037 /* TODO: linuxaio is very experimental */
3038#if !EV_RECOMMEND_LINUXAIO
3039 flags &= ~EVBACKEND_LINUXAIO;
3040#endif
3041 /* TODO: linuxaio is super experimental */
3042#if !EV_RECOMMEND_IOURING
3043 flags &= ~EVBACKEND_IOURING;
3044#endif
3045
1540 return flags; 3046 return flags;
1541} 3047}
1542 3048
3049ecb_cold
1543unsigned int 3050unsigned int
1544ev_embeddable_backends (void) 3051ev_embeddable_backends (void) EV_NOEXCEPT
1545{ 3052{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3053 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1547 3054
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3055 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */ 3056 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550 flags &= ~EVBACKEND_EPOLL; 3057 flags &= ~EVBACKEND_EPOLL;
3058
3059 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1551 3060
1552 return flags; 3061 return flags;
1553} 3062}
1554 3063
1555unsigned int 3064unsigned int
1556ev_backend (EV_P) 3065ev_backend (EV_P) EV_NOEXCEPT
1557{ 3066{
1558 return backend; 3067 return backend;
1559} 3068}
1560 3069
1561#if EV_FEATURE_API 3070#if EV_FEATURE_API
1562unsigned int 3071unsigned int
1563ev_iteration (EV_P) 3072ev_iteration (EV_P) EV_NOEXCEPT
1564{ 3073{
1565 return loop_count; 3074 return loop_count;
1566} 3075}
1567 3076
1568unsigned int 3077unsigned int
1569ev_depth (EV_P) 3078ev_depth (EV_P) EV_NOEXCEPT
1570{ 3079{
1571 return loop_depth; 3080 return loop_depth;
1572} 3081}
1573 3082
1574void 3083void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3084ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1576{ 3085{
1577 io_blocktime = interval; 3086 io_blocktime = interval;
1578} 3087}
1579 3088
1580void 3089void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3090ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1582{ 3091{
1583 timeout_blocktime = interval; 3092 timeout_blocktime = interval;
1584} 3093}
1585 3094
1586void 3095void
1587ev_set_userdata (EV_P_ void *data) 3096ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1588{ 3097{
1589 userdata = data; 3098 userdata = data;
1590} 3099}
1591 3100
1592void * 3101void *
1593ev_userdata (EV_P) 3102ev_userdata (EV_P) EV_NOEXCEPT
1594{ 3103{
1595 return userdata; 3104 return userdata;
1596} 3105}
1597 3106
3107void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3108ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1599{ 3109{
1600 invoke_cb = invoke_pending_cb; 3110 invoke_cb = invoke_pending_cb;
1601} 3111}
1602 3112
3113void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3114ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1604{ 3115{
1605 release_cb = release; 3116 release_cb = release;
1606 acquire_cb = acquire; 3117 acquire_cb = acquire;
1607} 3118}
1608#endif 3119#endif
1609 3120
1610/* initialise a loop structure, must be zero-initialised */ 3121/* initialise a loop structure, must be zero-initialised */
1611static void noinline 3122ecb_noinline ecb_cold
3123static void
1612loop_init (EV_P_ unsigned int flags) 3124loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1613{ 3125{
1614 if (!backend) 3126 if (!backend)
1615 { 3127 {
3128 origflags = flags;
3129
1616#if EV_USE_REALTIME 3130#if EV_USE_REALTIME
1617 if (!have_realtime) 3131 if (!have_realtime)
1618 { 3132 {
1619 struct timespec ts; 3133 struct timespec ts;
1620 3134
… …
1642 if (!(flags & EVFLAG_NOENV) 3156 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 3157 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 3158 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 3159 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 3160
1647 ev_rt_now = ev_time (); 3161 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 3162 mn_now = get_clock ();
1649 now_floor = mn_now; 3163 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 3164 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 3165#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 3166 invoke_cb = ev_invoke_pending;
1653#endif 3167#endif
1654 3168
1655 io_blocktime = 0.; 3169 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 3170 timeout_blocktime = 0.;
1657 backend = 0; 3171 backend = 0;
1658 backend_fd = -1; 3172 backend_fd = -1;
1659 sig_pending = 0; 3173 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 3174#if EV_ASYNC_ENABLE
1661 async_pending = 0; 3175 async_pending = 0;
1662#endif 3176#endif
3177 pipe_write_skipped = 0;
3178 pipe_write_wanted = 0;
3179 evpipe [0] = -1;
3180 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 3181#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3182 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 3183#endif
1666#if EV_USE_SIGNALFD 3184#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3185 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 3186#endif
3187#if EV_USE_TIMERFD
3188 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3189#endif
1669 3190
1670 if (!(flags & 0x0000ffffU)) 3191 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 3192 flags |= ev_recommended_backends ();
1672 3193
3194#if EV_USE_IOCP
3195 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3196#endif
1673#if EV_USE_PORT 3197#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3198 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 3199#endif
1676#if EV_USE_KQUEUE 3200#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3201 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3202#endif
3203#if EV_USE_IOURING
3204 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3205#endif
3206#if EV_USE_LINUXAIO
3207 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1678#endif 3208#endif
1679#if EV_USE_EPOLL 3209#if EV_USE_EPOLL
1680 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3210 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1681#endif 3211#endif
1682#if EV_USE_POLL 3212#if EV_USE_POLL
1683 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3213 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1684#endif 3214#endif
1685#if EV_USE_SELECT 3215#if EV_USE_SELECT
1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3216 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1687#endif 3217#endif
1688 3218
1689 ev_prepare_init (&pending_w, pendingcb); 3219 ev_prepare_init (&pending_w, pendingcb);
1690 3220
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3221#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1694#endif 3224#endif
1695 } 3225 }
1696} 3226}
1697 3227
1698/* free up a loop structure */ 3228/* free up a loop structure */
1699static void noinline 3229ecb_cold
3230void
1700loop_destroy (EV_P) 3231ev_loop_destroy (EV_P)
1701{ 3232{
1702 int i; 3233 int i;
3234
3235#if EV_MULTIPLICITY
3236 /* mimic free (0) */
3237 if (!EV_A)
3238 return;
3239#endif
3240
3241#if EV_CLEANUP_ENABLE
3242 /* queue cleanup watchers (and execute them) */
3243 if (ecb_expect_false (cleanupcnt))
3244 {
3245 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3246 EV_INVOKE_PENDING;
3247 }
3248#endif
3249
3250#if EV_CHILD_ENABLE
3251 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3252 {
3253 ev_ref (EV_A); /* child watcher */
3254 ev_signal_stop (EV_A_ &childev);
3255 }
3256#endif
1703 3257
1704 if (ev_is_active (&pipe_w)) 3258 if (ev_is_active (&pipe_w))
1705 { 3259 {
1706 /*ev_ref (EV_A);*/ 3260 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 3261 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 3262
1709#if EV_USE_EVENTFD
1710 if (evfd >= 0)
1711 close (evfd);
1712#endif
1713
1714 if (evpipe [0] >= 0)
1715 {
1716 EV_WIN32_CLOSE_FD (evpipe [0]); 3263 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 3264 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 3265 }
1720 3266
1721#if EV_USE_SIGNALFD 3267#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 3268 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 3269 close (sigfd);
1724#endif 3270#endif
1725 3271
3272#if EV_USE_TIMERFD
3273 if (ev_is_active (&timerfd_w))
3274 close (timerfd);
3275#endif
3276
1726#if EV_USE_INOTIFY 3277#if EV_USE_INOTIFY
1727 if (fs_fd >= 0) 3278 if (fs_fd >= 0)
1728 close (fs_fd); 3279 close (fs_fd);
1729#endif 3280#endif
1730 3281
1731 if (backend_fd >= 0) 3282 if (backend_fd >= 0)
1732 close (backend_fd); 3283 close (backend_fd);
1733 3284
3285#if EV_USE_IOCP
3286 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3287#endif
1734#if EV_USE_PORT 3288#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3289 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 3290#endif
1737#if EV_USE_KQUEUE 3291#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3292 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3293#endif
3294#if EV_USE_IOURING
3295 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3296#endif
3297#if EV_USE_LINUXAIO
3298 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1739#endif 3299#endif
1740#if EV_USE_EPOLL 3300#if EV_USE_EPOLL
1741 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3301 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1742#endif 3302#endif
1743#if EV_USE_POLL 3303#if EV_USE_POLL
1744 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3304 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1745#endif 3305#endif
1746#if EV_USE_SELECT 3306#if EV_USE_SELECT
1747 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3307 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1748#endif 3308#endif
1749 3309
1750 for (i = NUMPRI; i--; ) 3310 for (i = NUMPRI; i--; )
1751 { 3311 {
1752 array_free (pending, [i]); 3312 array_free (pending, [i]);
… …
1765 array_free (periodic, EMPTY); 3325 array_free (periodic, EMPTY);
1766#endif 3326#endif
1767#if EV_FORK_ENABLE 3327#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 3328 array_free (fork, EMPTY);
1769#endif 3329#endif
3330#if EV_CLEANUP_ENABLE
3331 array_free (cleanup, EMPTY);
3332#endif
1770 array_free (prepare, EMPTY); 3333 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 3334 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 3335#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 3336 array_free (async, EMPTY);
1774#endif 3337#endif
1775 3338
1776 backend = 0; 3339 backend = 0;
3340
3341#if EV_MULTIPLICITY
3342 if (ev_is_default_loop (EV_A))
3343#endif
3344 ev_default_loop_ptr = 0;
3345#if EV_MULTIPLICITY
3346 else
3347 ev_free (EV_A);
3348#endif
1777} 3349}
1778 3350
1779#if EV_USE_INOTIFY 3351#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 3352inline_size void infy_fork (EV_P);
1781#endif 3353#endif
1782 3354
1783inline_size void 3355inline_size void
1784loop_fork (EV_P) 3356loop_fork (EV_P)
1785{ 3357{
1786#if EV_USE_PORT 3358#if EV_USE_PORT
1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3359 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1788#endif 3360#endif
1789#if EV_USE_KQUEUE 3361#if EV_USE_KQUEUE
1790 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3362 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3363#endif
3364#if EV_USE_IOURING
3365 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3366#endif
3367#if EV_USE_LINUXAIO
3368 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1791#endif 3369#endif
1792#if EV_USE_EPOLL 3370#if EV_USE_EPOLL
1793 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3371 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1794#endif 3372#endif
1795#if EV_USE_INOTIFY 3373#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 3374 infy_fork (EV_A);
1797#endif 3375#endif
1798 3376
3377 if (postfork != 2)
3378 {
3379 #if EV_USE_SIGNALFD
3380 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3381 #endif
3382
3383 #if EV_USE_TIMERFD
3384 if (ev_is_active (&timerfd_w))
3385 {
3386 ev_ref (EV_A);
3387 ev_io_stop (EV_A_ &timerfd_w);
3388
3389 close (timerfd);
3390 timerfd = -2;
3391
3392 evtimerfd_init (EV_A);
3393 /* reschedule periodics, in case we missed something */
3394 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3395 }
3396 #endif
3397
3398 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 3399 if (ev_is_active (&pipe_w))
1800 { 3400 {
1801 /* this "locks" the handlers against writing to the pipe */ 3401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802 /* while we modify the fd vars */ 3402
1803 sig_pending = 1;
1804#if EV_ASYNC_ENABLE
1805 async_pending = 1;
1806#endif
1807
1808 ev_ref (EV_A); 3403 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 3404 ev_io_stop (EV_A_ &pipe_w);
1810 3405
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 3406 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 3407 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]); 3408
3409 evpipe_init (EV_A);
3410 /* iterate over everything, in case we missed something before */
3411 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1820 } 3412 }
1821 3413 #endif
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */
1825 pipecb (EV_A_ &pipe_w, EV_READ);
1826#endif
1827 } 3414 }
1828 3415
1829 postfork = 0; 3416 postfork = 0;
1830} 3417}
1831 3418
1832#if EV_MULTIPLICITY 3419#if EV_MULTIPLICITY
1833 3420
3421ecb_cold
1834struct ev_loop * 3422struct ev_loop *
1835ev_loop_new (unsigned int flags) 3423ev_loop_new (unsigned int flags) EV_NOEXCEPT
1836{ 3424{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3425 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 3426
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 3427 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 3428 loop_init (EV_A_ flags);
1841 3429
1842 if (ev_backend (EV_A)) 3430 if (ev_backend (EV_A))
1843 return EV_A; 3431 return EV_A;
1844 3432
3433 ev_free (EV_A);
1845 return 0; 3434 return 0;
1846} 3435}
1847 3436
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 3437#endif /* multiplicity */
1861 3438
1862#if EV_VERIFY 3439#if EV_VERIFY
1863static void noinline 3440ecb_noinline ecb_cold
3441static void
1864verify_watcher (EV_P_ W w) 3442verify_watcher (EV_P_ W w)
1865{ 3443{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3444 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 3445
1868 if (w->pending) 3446 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3447 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 3448}
1871 3449
1872static void noinline 3450ecb_noinline ecb_cold
3451static void
1873verify_heap (EV_P_ ANHE *heap, int N) 3452verify_heap (EV_P_ ANHE *heap, int N)
1874{ 3453{
1875 int i; 3454 int i;
1876 3455
1877 for (i = HEAP0; i < N + HEAP0; ++i) 3456 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 3461
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3462 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 3463 }
1885} 3464}
1886 3465
1887static void noinline 3466ecb_noinline ecb_cold
3467static void
1888array_verify (EV_P_ W *ws, int cnt) 3468array_verify (EV_P_ W *ws, int cnt)
1889{ 3469{
1890 while (cnt--) 3470 while (cnt--)
1891 { 3471 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3472 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 3474 }
1895} 3475}
1896#endif 3476#endif
1897 3477
1898#if EV_FEATURE_API 3478#if EV_FEATURE_API
1899void 3479void ecb_cold
1900ev_verify (EV_P) 3480ev_verify (EV_P) EV_NOEXCEPT
1901{ 3481{
1902#if EV_VERIFY 3482#if EV_VERIFY
1903 int i; 3483 int i;
1904 WL w; 3484 WL w, w2;
1905 3485
1906 assert (activecnt >= -1); 3486 assert (activecnt >= -1);
1907 3487
1908 assert (fdchangemax >= fdchangecnt); 3488 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 3489 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3490 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 3491
1912 assert (anfdmax >= 0); 3492 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 3493 for (i = 0; i < anfdmax; ++i)
3494 {
3495 int j = 0;
3496
1914 for (w = anfds [i].head; w; w = w->next) 3497 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 3498 {
1916 verify_watcher (EV_A_ (W)w); 3499 verify_watcher (EV_A_ (W)w);
3500
3501 if (j++ & 1)
3502 {
3503 assert (("libev: io watcher list contains a loop", w != w2));
3504 w2 = w2->next;
3505 }
3506
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3507 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3508 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 3509 }
3510 }
1920 3511
1921 assert (timermax >= timercnt); 3512 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 3513 verify_heap (EV_A_ timers, timercnt);
1923 3514
1924#if EV_PERIODIC_ENABLE 3515#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 3530#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 3531 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 3532 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 3533#endif
1943 3534
3535#if EV_CLEANUP_ENABLE
3536 assert (cleanupmax >= cleanupcnt);
3537 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3538#endif
3539
1944#if EV_ASYNC_ENABLE 3540#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 3541 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 3542 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 3543#endif
1948 3544
… …
1965#endif 3561#endif
1966} 3562}
1967#endif 3563#endif
1968 3564
1969#if EV_MULTIPLICITY 3565#if EV_MULTIPLICITY
3566ecb_cold
1970struct ev_loop * 3567struct ev_loop *
1971ev_default_loop_init (unsigned int flags)
1972#else 3568#else
1973int 3569int
3570#endif
1974ev_default_loop (unsigned int flags) 3571ev_default_loop (unsigned int flags) EV_NOEXCEPT
1975#endif
1976{ 3572{
1977 if (!ev_default_loop_ptr) 3573 if (!ev_default_loop_ptr)
1978 { 3574 {
1979#if EV_MULTIPLICITY 3575#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 3576 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 3595
2000 return ev_default_loop_ptr; 3596 return ev_default_loop_ptr;
2001} 3597}
2002 3598
2003void 3599void
2004ev_default_destroy (void) 3600ev_loop_fork (EV_P) EV_NOEXCEPT
2005{ 3601{
2006#if EV_MULTIPLICITY 3602 postfork = 1;
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */
2028} 3603}
2029 3604
2030/*****************************************************************************/ 3605/*****************************************************************************/
2031 3606
2032void 3607void
… …
2034{ 3609{
2035 EV_CB_INVOKE ((W)w, revents); 3610 EV_CB_INVOKE ((W)w, revents);
2036} 3611}
2037 3612
2038unsigned int 3613unsigned int
2039ev_pending_count (EV_P) 3614ev_pending_count (EV_P) EV_NOEXCEPT
2040{ 3615{
2041 int pri; 3616 int pri;
2042 unsigned int count = 0; 3617 unsigned int count = 0;
2043 3618
2044 for (pri = NUMPRI; pri--; ) 3619 for (pri = NUMPRI; pri--; )
2045 count += pendingcnt [pri]; 3620 count += pendingcnt [pri];
2046 3621
2047 return count; 3622 return count;
2048} 3623}
2049 3624
2050void noinline 3625ecb_noinline
3626void
2051ev_invoke_pending (EV_P) 3627ev_invoke_pending (EV_P)
2052{ 3628{
2053 int pri; 3629 pendingpri = NUMPRI;
2054 3630
2055 for (pri = NUMPRI; pri--; ) 3631 do
3632 {
3633 --pendingpri;
3634
3635 /* pendingpri possibly gets modified in the inner loop */
2056 while (pendingcnt [pri]) 3636 while (pendingcnt [pendingpri])
2057 { 3637 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3638 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3639
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062
2063 p->w->pending = 0; 3640 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3641 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2066 } 3643 }
3644 }
3645 while (pendingpri);
2067} 3646}
2068 3647
2069#if EV_IDLE_ENABLE 3648#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3649/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3650/* only when higher priorities are idle" logic */
2072inline_size void 3651inline_size void
2073idle_reify (EV_P) 3652idle_reify (EV_P)
2074{ 3653{
2075 if (expect_false (idleall)) 3654 if (ecb_expect_false (idleall))
2076 { 3655 {
2077 int pri; 3656 int pri;
2078 3657
2079 for (pri = NUMPRI; pri--; ) 3658 for (pri = NUMPRI; pri--; )
2080 { 3659 {
… …
2110 { 3689 {
2111 ev_at (w) += w->repeat; 3690 ev_at (w) += w->repeat;
2112 if (ev_at (w) < mn_now) 3691 if (ev_at (w) < mn_now)
2113 ev_at (w) = mn_now; 3692 ev_at (w) = mn_now;
2114 3693
2115 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3694 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2116 3695
2117 ANHE_at_cache (timers [HEAP0]); 3696 ANHE_at_cache (timers [HEAP0]);
2118 downheap (timers, timercnt, HEAP0); 3697 downheap (timers, timercnt, HEAP0);
2119 } 3698 }
2120 else 3699 else
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3707 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3708 }
2130} 3709}
2131 3710
2132#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
3712
3713ecb_noinline
3714static void
3715periodic_recalc (EV_P_ ev_periodic *w)
3716{
3717 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3718 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3719
3720 /* the above almost always errs on the low side */
3721 while (at <= ev_rt_now)
3722 {
3723 ev_tstamp nat = at + w->interval;
3724
3725 /* when resolution fails us, we use ev_rt_now */
3726 if (ecb_expect_false (nat == at))
3727 {
3728 at = ev_rt_now;
3729 break;
3730 }
3731
3732 at = nat;
3733 }
3734
3735 ev_at (w) = at;
3736}
3737
2133/* make periodics pending */ 3738/* make periodics pending */
2134inline_size void 3739inline_size void
2135periodics_reify (EV_P) 3740periodics_reify (EV_P)
2136{ 3741{
2137 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2138 3743
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3744 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3745 {
2141 int feed_count = 0;
2142
2143 do 3746 do
2144 { 3747 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3748 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3749
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3750 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3759 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3760 downheap (periodics, periodiccnt, HEAP0);
2158 } 3761 }
2159 else if (w->interval) 3762 else if (w->interval)
2160 { 3763 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3764 periodic_recalc (EV_A_ w);
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]); 3765 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3766 downheap (periodics, periodiccnt, HEAP0);
2177 } 3767 }
2178 else 3768 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3769 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3777 }
2188} 3778}
2189 3779
2190/* simply recalculate all periodics */ 3780/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3781/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3782ecb_noinline ecb_cold
3783static void
2193periodics_reschedule (EV_P) 3784periodics_reschedule (EV_P)
2194{ 3785{
2195 int i; 3786 int i;
2196 3787
2197 /* adjust periodics after time jump */ 3788 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3791 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3792
2202 if (w->reschedule_cb) 3793 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3794 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3795 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3796 periodic_recalc (EV_A_ w);
2206 3797
2207 ANHE_at_cache (periodics [i]); 3798 ANHE_at_cache (periodics [i]);
2208 } 3799 }
2209 3800
2210 reheap (periodics, periodiccnt); 3801 reheap (periodics, periodiccnt);
2211} 3802}
2212#endif 3803#endif
2213 3804
2214/* adjust all timers by a given offset */ 3805/* adjust all timers by a given offset */
2215static void noinline 3806ecb_noinline ecb_cold
3807static void
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3808timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3809{
2218 int i; 3810 int i;
2219 3811
2220 for (i = 0; i < timercnt; ++i) 3812 for (i = 0; i < timercnt; ++i)
… …
2229/* also detect if there was a timejump, and act accordingly */ 3821/* also detect if there was a timejump, and act accordingly */
2230inline_speed void 3822inline_speed void
2231time_update (EV_P_ ev_tstamp max_block) 3823time_update (EV_P_ ev_tstamp max_block)
2232{ 3824{
2233#if EV_USE_MONOTONIC 3825#if EV_USE_MONOTONIC
2234 if (expect_true (have_monotonic)) 3826 if (ecb_expect_true (have_monotonic))
2235 { 3827 {
2236 int i; 3828 int i;
2237 ev_tstamp odiff = rtmn_diff; 3829 ev_tstamp odiff = rtmn_diff;
2238 3830
2239 mn_now = get_clock (); 3831 mn_now = get_clock ();
2240 3832
2241 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2242 /* interpolate in the meantime */ 3834 /* interpolate in the meantime */
2243 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3835 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2244 { 3836 {
2245 ev_rt_now = rtmn_diff + mn_now; 3837 ev_rt_now = rtmn_diff + mn_now;
2246 return; 3838 return;
2247 } 3839 }
2248 3840
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3849 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3850 * in the unlikely event of having been preempted here.
2259 */ 3851 */
2260 for (i = 4; --i; ) 3852 for (i = 4; --i; )
2261 { 3853 {
3854 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3855 rtmn_diff = ev_rt_now - mn_now;
2263 3856
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3857 diff = odiff - rtmn_diff;
3858
3859 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2265 return; /* all is well */ 3860 return; /* all is well */
2266 3861
2267 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3863 mn_now = get_clock ();
2269 now_floor = mn_now; 3864 now_floor = mn_now;
… …
2278 else 3873 else
2279#endif 3874#endif
2280 { 3875 {
2281 ev_rt_now = ev_time (); 3876 ev_rt_now = ev_time ();
2282 3877
2283 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3878 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2284 { 3879 {
2285 /* adjust timers. this is easy, as the offset is the same for all of them */ 3880 /* adjust timers. this is easy, as the offset is the same for all of them */
2286 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3881 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2287#if EV_PERIODIC_ENABLE 3882#if EV_PERIODIC_ENABLE
2288 periodics_reschedule (EV_A); 3883 periodics_reschedule (EV_A);
… …
2291 3886
2292 mn_now = ev_rt_now; 3887 mn_now = ev_rt_now;
2293 } 3888 }
2294} 3889}
2295 3890
2296void 3891int
2297ev_loop (EV_P_ int flags) 3892ev_run (EV_P_ int flags)
2298{ 3893{
2299#if EV_FEATURE_API 3894#if EV_FEATURE_API
2300 ++loop_depth; 3895 ++loop_depth;
2301#endif 3896#endif
2302 3897
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3898 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 3899
2305 loop_done = EVUNLOOP_CANCEL; 3900 loop_done = EVBREAK_CANCEL;
2306 3901
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3902 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 3903
2309 do 3904 do
2310 { 3905 {
2311#if EV_VERIFY >= 2 3906#if EV_VERIFY >= 2
2312 ev_verify (EV_A); 3907 ev_verify (EV_A);
2313#endif 3908#endif
2314 3909
2315#ifndef _WIN32 3910#ifndef _WIN32
2316 if (expect_false (curpid)) /* penalise the forking check even more */ 3911 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2317 if (expect_false (getpid () != curpid)) 3912 if (ecb_expect_false (getpid () != curpid))
2318 { 3913 {
2319 curpid = getpid (); 3914 curpid = getpid ();
2320 postfork = 1; 3915 postfork = 1;
2321 } 3916 }
2322#endif 3917#endif
2323 3918
2324#if EV_FORK_ENABLE 3919#if EV_FORK_ENABLE
2325 /* we might have forked, so queue fork handlers */ 3920 /* we might have forked, so queue fork handlers */
2326 if (expect_false (postfork)) 3921 if (ecb_expect_false (postfork))
2327 if (forkcnt) 3922 if (forkcnt)
2328 { 3923 {
2329 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3924 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2330 EV_INVOKE_PENDING; 3925 EV_INVOKE_PENDING;
2331 } 3926 }
2332#endif 3927#endif
2333 3928
2334#if EV_PREPARE_ENABLE 3929#if EV_PREPARE_ENABLE
2335 /* queue prepare watchers (and execute them) */ 3930 /* queue prepare watchers (and execute them) */
2336 if (expect_false (preparecnt)) 3931 if (ecb_expect_false (preparecnt))
2337 { 3932 {
2338 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3933 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2339 EV_INVOKE_PENDING; 3934 EV_INVOKE_PENDING;
2340 } 3935 }
2341#endif 3936#endif
2342 3937
2343 if (expect_false (loop_done)) 3938 if (ecb_expect_false (loop_done))
2344 break; 3939 break;
2345 3940
2346 /* we might have forked, so reify kernel state if necessary */ 3941 /* we might have forked, so reify kernel state if necessary */
2347 if (expect_false (postfork)) 3942 if (ecb_expect_false (postfork))
2348 loop_fork (EV_A); 3943 loop_fork (EV_A);
2349 3944
2350 /* update fd-related kernel structures */ 3945 /* update fd-related kernel structures */
2351 fd_reify (EV_A); 3946 fd_reify (EV_A);
2352 3947
2353 /* calculate blocking time */ 3948 /* calculate blocking time */
2354 { 3949 {
2355 ev_tstamp waittime = 0.; 3950 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 3951 ev_tstamp sleeptime = 0.;
2357 3952
3953 /* remember old timestamp for io_blocktime calculation */
3954 ev_tstamp prev_mn_now = mn_now;
3955
3956 /* update time to cancel out callback processing overhead */
3957 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3958
3959 /* from now on, we want a pipe-wake-up */
3960 pipe_write_wanted = 1;
3961
3962 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3963
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3964 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2359 { 3965 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
2363 /* update time to cancel out callback processing overhead */
2364 time_update (EV_A_ 1e100);
2365
2366 waittime = MAX_BLOCKTIME; 3966 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2367 3967
2368 if (timercnt) 3968 if (timercnt)
2369 { 3969 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3970 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 3971 if (waittime > to) waittime = to;
2372 } 3972 }
2373 3973
2374#if EV_PERIODIC_ENABLE 3974#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 3975 if (periodiccnt)
2376 { 3976 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3977 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 3978 if (waittime > to) waittime = to;
2379 } 3979 }
2380#endif 3980#endif
2381 3981
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3982 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 3983 if (ecb_expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 3984 waittime = timeout_blocktime;
2385 3985
3986 /* now there are two more special cases left, either we have
3987 * already-expired timers, so we should not sleep, or we have timers
3988 * that expire very soon, in which case we need to wait for a minimum
3989 * amount of time for some event loop backends.
3990 */
3991 if (ecb_expect_false (waittime < backend_mintime))
3992 waittime = waittime <= EV_TS_CONST (0.)
3993 ? EV_TS_CONST (0.)
3994 : backend_mintime;
3995
2386 /* extra check because io_blocktime is commonly 0 */ 3996 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 3997 if (ecb_expect_false (io_blocktime))
2388 { 3998 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3999 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 4000
2391 if (sleeptime > waittime - backend_fudge) 4001 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 4002 sleeptime = waittime - backend_mintime;
2393 4003
2394 if (expect_true (sleeptime > 0.)) 4004 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2395 { 4005 {
2396 ev_sleep (sleeptime); 4006 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 4007 waittime -= sleeptime;
2398 } 4008 }
2399 } 4009 }
2400 } 4010 }
2401 4011
2402#if EV_FEATURE_API 4012#if EV_FEATURE_API
2403 ++loop_count; 4013 ++loop_count;
2404#endif 4014#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4015 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 4016 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4017 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4018
4019 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4020
4021 ECB_MEMORY_FENCE_ACQUIRE;
4022 if (pipe_write_skipped)
4023 {
4024 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4025 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4026 }
2408 4027
2409 /* update ev_rt_now, do magic */ 4028 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 4029 time_update (EV_A_ waittime + sleeptime);
2411 } 4030 }
2412 4031
… …
2421 idle_reify (EV_A); 4040 idle_reify (EV_A);
2422#endif 4041#endif
2423 4042
2424#if EV_CHECK_ENABLE 4043#if EV_CHECK_ENABLE
2425 /* queue check watchers, to be executed first */ 4044 /* queue check watchers, to be executed first */
2426 if (expect_false (checkcnt)) 4045 if (ecb_expect_false (checkcnt))
2427 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4046 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2428#endif 4047#endif
2429 4048
2430 EV_INVOKE_PENDING; 4049 EV_INVOKE_PENDING;
2431 } 4050 }
2432 while (expect_true ( 4051 while (ecb_expect_true (
2433 activecnt 4052 activecnt
2434 && !loop_done 4053 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4054 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 4055 ));
2437 4056
2438 if (loop_done == EVUNLOOP_ONE) 4057 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 4058 loop_done = EVBREAK_CANCEL;
2440 4059
2441#if EV_FEATURE_API 4060#if EV_FEATURE_API
2442 --loop_depth; 4061 --loop_depth;
2443#endif 4062#endif
2444}
2445 4063
4064 return activecnt;
4065}
4066
2446void 4067void
2447ev_unloop (EV_P_ int how) 4068ev_break (EV_P_ int how) EV_NOEXCEPT
2448{ 4069{
2449 loop_done = how; 4070 loop_done = how;
2450} 4071}
2451 4072
2452void 4073void
2453ev_ref (EV_P) 4074ev_ref (EV_P) EV_NOEXCEPT
2454{ 4075{
2455 ++activecnt; 4076 ++activecnt;
2456} 4077}
2457 4078
2458void 4079void
2459ev_unref (EV_P) 4080ev_unref (EV_P) EV_NOEXCEPT
2460{ 4081{
2461 --activecnt; 4082 --activecnt;
2462} 4083}
2463 4084
2464void 4085void
2465ev_now_update (EV_P) 4086ev_now_update (EV_P) EV_NOEXCEPT
2466{ 4087{
2467 time_update (EV_A_ 1e100); 4088 time_update (EV_A_ EV_TSTAMP_HUGE);
2468} 4089}
2469 4090
2470void 4091void
2471ev_suspend (EV_P) 4092ev_suspend (EV_P) EV_NOEXCEPT
2472{ 4093{
2473 ev_now_update (EV_A); 4094 ev_now_update (EV_A);
2474} 4095}
2475 4096
2476void 4097void
2477ev_resume (EV_P) 4098ev_resume (EV_P) EV_NOEXCEPT
2478{ 4099{
2479 ev_tstamp mn_prev = mn_now; 4100 ev_tstamp mn_prev = mn_now;
2480 4101
2481 ev_now_update (EV_A); 4102 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 4103 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2499inline_size void 4120inline_size void
2500wlist_del (WL *head, WL elem) 4121wlist_del (WL *head, WL elem)
2501{ 4122{
2502 while (*head) 4123 while (*head)
2503 { 4124 {
2504 if (expect_true (*head == elem)) 4125 if (ecb_expect_true (*head == elem))
2505 { 4126 {
2506 *head = elem->next; 4127 *head = elem->next;
2507 break; 4128 break;
2508 } 4129 }
2509 4130
… …
2521 w->pending = 0; 4142 w->pending = 0;
2522 } 4143 }
2523} 4144}
2524 4145
2525int 4146int
2526ev_clear_pending (EV_P_ void *w) 4147ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2527{ 4148{
2528 W w_ = (W)w; 4149 W w_ = (W)w;
2529 int pending = w_->pending; 4150 int pending = w_->pending;
2530 4151
2531 if (expect_true (pending)) 4152 if (ecb_expect_true (pending))
2532 { 4153 {
2533 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4154 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2534 p->w = (W)&pending_w; 4155 p->w = (W)&pending_w;
2535 w_->pending = 0; 4156 w_->pending = 0;
2536 return p->events; 4157 return p->events;
… …
2563 w->active = 0; 4184 w->active = 0;
2564} 4185}
2565 4186
2566/*****************************************************************************/ 4187/*****************************************************************************/
2567 4188
2568void noinline 4189ecb_noinline
4190void
2569ev_io_start (EV_P_ ev_io *w) 4191ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2570{ 4192{
2571 int fd = w->fd; 4193 int fd = w->fd;
2572 4194
2573 if (expect_false (ev_is_active (w))) 4195 if (ecb_expect_false (ev_is_active (w)))
2574 return; 4196 return;
2575 4197
2576 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4198 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4199 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2578 4200
4201#if EV_VERIFY >= 2
4202 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4203#endif
2579 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
2580 4205
2581 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4207 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2583 wlist_add (&anfds[fd].head, (WL)w); 4208 wlist_add (&anfds[fd].head, (WL)w);
4209
4210 /* common bug, apparently */
4211 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2584 4212
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4213 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 4214 w->events &= ~EV__IOFDSET;
2587 4215
2588 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
2589} 4217}
2590 4218
2591void noinline 4219ecb_noinline
4220void
2592ev_io_stop (EV_P_ ev_io *w) 4221ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2593{ 4222{
2594 clear_pending (EV_A_ (W)w); 4223 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 4224 if (ecb_expect_false (!ev_is_active (w)))
2596 return; 4225 return;
2597 4226
2598 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4227 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2599 4228
4229#if EV_VERIFY >= 2
4230 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4231#endif
2600 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
2601 4233
2602 wlist_del (&anfds[w->fd].head, (WL)w); 4234 wlist_del (&anfds[w->fd].head, (WL)w);
2603 ev_stop (EV_A_ (W)w); 4235 ev_stop (EV_A_ (W)w);
2604 4236
2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4237 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2606 4238
2607 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2608} 4240}
2609 4241
2610void noinline 4242ecb_noinline
4243void
2611ev_timer_start (EV_P_ ev_timer *w) 4244ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2612{ 4245{
2613 if (expect_false (ev_is_active (w))) 4246 if (ecb_expect_false (ev_is_active (w)))
2614 return; 4247 return;
2615 4248
2616 ev_at (w) += mn_now; 4249 ev_at (w) += mn_now;
2617 4250
2618 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4251 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2619 4252
2620 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
2621 4254
2622 ++timercnt; 4255 ++timercnt;
2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4256 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2624 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4257 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2625 ANHE_w (timers [ev_active (w)]) = (WT)w; 4258 ANHE_w (timers [ev_active (w)]) = (WT)w;
2626 ANHE_at_cache (timers [ev_active (w)]); 4259 ANHE_at_cache (timers [ev_active (w)]);
2627 upheap (timers, ev_active (w)); 4260 upheap (timers, ev_active (w));
2628 4261
2629 EV_FREQUENT_CHECK; 4262 EV_FREQUENT_CHECK;
2630 4263
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4264 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 4265}
2633 4266
2634void noinline 4267ecb_noinline
4268void
2635ev_timer_stop (EV_P_ ev_timer *w) 4269ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2636{ 4270{
2637 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 4272 if (ecb_expect_false (!ev_is_active (w)))
2639 return; 4273 return;
2640 4274
2641 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
2642 4276
2643 { 4277 {
… …
2645 4279
2646 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4280 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2647 4281
2648 --timercnt; 4282 --timercnt;
2649 4283
2650 if (expect_true (active < timercnt + HEAP0)) 4284 if (ecb_expect_true (active < timercnt + HEAP0))
2651 { 4285 {
2652 timers [active] = timers [timercnt + HEAP0]; 4286 timers [active] = timers [timercnt + HEAP0];
2653 adjustheap (timers, timercnt, active); 4287 adjustheap (timers, timercnt, active);
2654 } 4288 }
2655 } 4289 }
… …
2659 ev_stop (EV_A_ (W)w); 4293 ev_stop (EV_A_ (W)w);
2660 4294
2661 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
2662} 4296}
2663 4297
2664void noinline 4298ecb_noinline
4299void
2665ev_timer_again (EV_P_ ev_timer *w) 4300ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2666{ 4301{
2667 EV_FREQUENT_CHECK; 4302 EV_FREQUENT_CHECK;
4303
4304 clear_pending (EV_A_ (W)w);
2668 4305
2669 if (ev_is_active (w)) 4306 if (ev_is_active (w))
2670 { 4307 {
2671 if (w->repeat) 4308 if (w->repeat)
2672 { 4309 {
… …
2685 4322
2686 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
2687} 4324}
2688 4325
2689ev_tstamp 4326ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 4327ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2691{ 4328{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4329 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2693} 4330}
2694 4331
2695#if EV_PERIODIC_ENABLE 4332#if EV_PERIODIC_ENABLE
2696void noinline 4333ecb_noinline
4334void
2697ev_periodic_start (EV_P_ ev_periodic *w) 4335ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2698{ 4336{
2699 if (expect_false (ev_is_active (w))) 4337 if (ecb_expect_false (ev_is_active (w)))
2700 return; 4338 return;
4339
4340#if EV_USE_TIMERFD
4341 if (timerfd == -2)
4342 evtimerfd_init (EV_A);
4343#endif
2701 4344
2702 if (w->reschedule_cb) 4345 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4346 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 4347 else if (w->interval)
2705 { 4348 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4349 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 4350 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 4351 }
2710 else 4352 else
2711 ev_at (w) = w->offset; 4353 ev_at (w) = w->offset;
2712 4354
2713 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
2714 4356
2715 ++periodiccnt; 4357 ++periodiccnt;
2716 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4358 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2717 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4359 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2718 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4360 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2719 ANHE_at_cache (periodics [ev_active (w)]); 4361 ANHE_at_cache (periodics [ev_active (w)]);
2720 upheap (periodics, ev_active (w)); 4362 upheap (periodics, ev_active (w));
2721 4363
2722 EV_FREQUENT_CHECK; 4364 EV_FREQUENT_CHECK;
2723 4365
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4366 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 4367}
2726 4368
2727void noinline 4369ecb_noinline
4370void
2728ev_periodic_stop (EV_P_ ev_periodic *w) 4371ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2729{ 4372{
2730 clear_pending (EV_A_ (W)w); 4373 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 4374 if (ecb_expect_false (!ev_is_active (w)))
2732 return; 4375 return;
2733 4376
2734 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2735 4378
2736 { 4379 {
… …
2738 4381
2739 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4382 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2740 4383
2741 --periodiccnt; 4384 --periodiccnt;
2742 4385
2743 if (expect_true (active < periodiccnt + HEAP0)) 4386 if (ecb_expect_true (active < periodiccnt + HEAP0))
2744 { 4387 {
2745 periodics [active] = periodics [periodiccnt + HEAP0]; 4388 periodics [active] = periodics [periodiccnt + HEAP0];
2746 adjustheap (periodics, periodiccnt, active); 4389 adjustheap (periodics, periodiccnt, active);
2747 } 4390 }
2748 } 4391 }
… …
2750 ev_stop (EV_A_ (W)w); 4393 ev_stop (EV_A_ (W)w);
2751 4394
2752 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
2753} 4396}
2754 4397
2755void noinline 4398ecb_noinline
4399void
2756ev_periodic_again (EV_P_ ev_periodic *w) 4400ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2757{ 4401{
2758 /* TODO: use adjustheap and recalculation */ 4402 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 4403 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 4404 ev_periodic_start (EV_A_ w);
2761} 4405}
… …
2765# define SA_RESTART 0 4409# define SA_RESTART 0
2766#endif 4410#endif
2767 4411
2768#if EV_SIGNAL_ENABLE 4412#if EV_SIGNAL_ENABLE
2769 4413
2770void noinline 4414ecb_noinline
4415void
2771ev_signal_start (EV_P_ ev_signal *w) 4416ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2772{ 4417{
2773 if (expect_false (ev_is_active (w))) 4418 if (ecb_expect_false (ev_is_active (w)))
2774 return; 4419 return;
2775 4420
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4421 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2777 4422
2778#if EV_MULTIPLICITY 4423#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 4424 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4425 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 4426
2782 signals [w->signum - 1].loop = EV_A; 4427 signals [w->signum - 1].loop = EV_A;
4428 ECB_MEMORY_FENCE_RELEASE;
2783#endif 4429#endif
2784 4430
2785 EV_FREQUENT_CHECK; 4431 EV_FREQUENT_CHECK;
2786 4432
2787#if EV_USE_SIGNALFD 4433#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 4480 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 4481 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4482 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 4483 sigaction (w->signum, &sa, 0);
2838 4484
4485 if (origflags & EVFLAG_NOSIGMASK)
4486 {
2839 sigemptyset (&sa.sa_mask); 4487 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 4488 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4489 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4490 }
2842#endif 4491#endif
2843 } 4492 }
2844 4493
2845 EV_FREQUENT_CHECK; 4494 EV_FREQUENT_CHECK;
2846} 4495}
2847 4496
2848void noinline 4497ecb_noinline
4498void
2849ev_signal_stop (EV_P_ ev_signal *w) 4499ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2850{ 4500{
2851 clear_pending (EV_A_ (W)w); 4501 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 4502 if (ecb_expect_false (!ev_is_active (w)))
2853 return; 4503 return;
2854 4504
2855 EV_FREQUENT_CHECK; 4505 EV_FREQUENT_CHECK;
2856 4506
2857 wlist_del (&signals [w->signum - 1].head, (WL)w); 4507 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2885#endif 4535#endif
2886 4536
2887#if EV_CHILD_ENABLE 4537#if EV_CHILD_ENABLE
2888 4538
2889void 4539void
2890ev_child_start (EV_P_ ev_child *w) 4540ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2891{ 4541{
2892#if EV_MULTIPLICITY 4542#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4543 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 4544#endif
2895 if (expect_false (ev_is_active (w))) 4545 if (ecb_expect_false (ev_is_active (w)))
2896 return; 4546 return;
2897 4547
2898 EV_FREQUENT_CHECK; 4548 EV_FREQUENT_CHECK;
2899 4549
2900 ev_start (EV_A_ (W)w, 1); 4550 ev_start (EV_A_ (W)w, 1);
… …
2902 4552
2903 EV_FREQUENT_CHECK; 4553 EV_FREQUENT_CHECK;
2904} 4554}
2905 4555
2906void 4556void
2907ev_child_stop (EV_P_ ev_child *w) 4557ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2908{ 4558{
2909 clear_pending (EV_A_ (W)w); 4559 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 4560 if (ecb_expect_false (!ev_is_active (w)))
2911 return; 4561 return;
2912 4562
2913 EV_FREQUENT_CHECK; 4563 EV_FREQUENT_CHECK;
2914 4564
2915 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4565 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2929 4579
2930#define DEF_STAT_INTERVAL 5.0074891 4580#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4581#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2932#define MIN_STAT_INTERVAL 0.1074891 4582#define MIN_STAT_INTERVAL 0.1074891
2933 4583
2934static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4584ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2935 4585
2936#if EV_USE_INOTIFY 4586#if EV_USE_INOTIFY
2937 4587
2938/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4588/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4589# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 4590
2941static void noinline 4591ecb_noinline
4592static void
2942infy_add (EV_P_ ev_stat *w) 4593infy_add (EV_P_ ev_stat *w)
2943{ 4594{
2944 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); 4595 w->wd = inotify_add_watch (fs_fd, w->path,
4596 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4597 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4598 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 4599
2946 if (w->wd >= 0) 4600 if (w->wd >= 0)
2947 { 4601 {
2948 struct statfs sfs; 4602 struct statfs sfs;
2949 4603
… …
2953 4607
2954 if (!fs_2625) 4608 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4609 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 4610 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 4611 && (sfs.f_type == 0x1373 /* devfs */
4612 || sfs.f_type == 0x4006 /* fat */
4613 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 4614 || sfs.f_type == 0xEF53 /* ext2/3 */
4615 || sfs.f_type == 0x72b6 /* jffs2 */
4616 || sfs.f_type == 0x858458f6 /* ramfs */
4617 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 4618 || sfs.f_type == 0x3153464a /* jfs */
4619 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 4620 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 4621 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 4622 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 4624 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 4626 }
… …
2987 if (!pend || pend == path) 4647 if (!pend || pend == path)
2988 break; 4648 break;
2989 4649
2990 *pend = 0; 4650 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4651 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4652 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4654 }
2995 } 4655 }
2996 4656
2997 if (w->wd >= 0) 4657 if (w->wd >= 0)
… …
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer); 4662 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3004} 4664}
3005 4665
3006static void noinline 4666ecb_noinline
4667static void
3007infy_del (EV_P_ ev_stat *w) 4668infy_del (EV_P_ ev_stat *w)
3008{ 4669{
3009 int slot; 4670 int slot;
3010 int wd = w->wd; 4671 int wd = w->wd;
3011 4672
… …
3018 4679
3019 /* remove this watcher, if others are watching it, they will rearm */ 4680 /* remove this watcher, if others are watching it, they will rearm */
3020 inotify_rm_watch (fs_fd, wd); 4681 inotify_rm_watch (fs_fd, wd);
3021} 4682}
3022 4683
3023static void noinline 4684ecb_noinline
4685static void
3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3025{ 4687{
3026 if (slot < 0) 4688 if (slot < 0)
3027 /* overflow, need to check for all hash slots */ 4689 /* overflow, need to check for all hash slots */
3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4727 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4728 }
3067} 4729}
3068 4730
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void 4731inline_size ecb_cold
4732void
3102ev_check_2625 (EV_P) 4733ev_check_2625 (EV_P)
3103{ 4734{
3104 /* kernels < 2.6.25 are borked 4735 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4736 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4737 */
… …
3111} 4742}
3112 4743
3113inline_size int 4744inline_size int
3114infy_newfd (void) 4745infy_newfd (void)
3115{ 4746{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4747#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4748 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4749 if (fd >= 0)
3119 return fd; 4750 return fd;
3120#endif 4751#endif
3121 return inotify_init (); 4752 return inotify_init ();
… …
3196#else 4827#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4828# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4829#endif
3199 4830
3200void 4831void
3201ev_stat_stat (EV_P_ ev_stat *w) 4832ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3202{ 4833{
3203 if (lstat (w->path, &w->attr) < 0) 4834 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4835 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4836 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4837 w->attr.st_nlink = 1;
3207} 4838}
3208 4839
3209static void noinline 4840ecb_noinline
4841static void
3210stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3211{ 4843{
3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3213 4845
3214 ev_statdata prev = w->attr; 4846 ev_statdata prev = w->attr;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 4877 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 4878 }
3247} 4879}
3248 4880
3249void 4881void
3250ev_stat_start (EV_P_ ev_stat *w) 4882ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3251{ 4883{
3252 if (expect_false (ev_is_active (w))) 4884 if (ecb_expect_false (ev_is_active (w)))
3253 return; 4885 return;
3254 4886
3255 ev_stat_stat (EV_A_ w); 4887 ev_stat_stat (EV_A_ w);
3256 4888
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3276 4908
3277 EV_FREQUENT_CHECK; 4909 EV_FREQUENT_CHECK;
3278} 4910}
3279 4911
3280void 4912void
3281ev_stat_stop (EV_P_ ev_stat *w) 4913ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3282{ 4914{
3283 clear_pending (EV_A_ (W)w); 4915 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 4916 if (ecb_expect_false (!ev_is_active (w)))
3285 return; 4917 return;
3286 4918
3287 EV_FREQUENT_CHECK; 4919 EV_FREQUENT_CHECK;
3288 4920
3289#if EV_USE_INOTIFY 4921#if EV_USE_INOTIFY
… …
3302} 4934}
3303#endif 4935#endif
3304 4936
3305#if EV_IDLE_ENABLE 4937#if EV_IDLE_ENABLE
3306void 4938void
3307ev_idle_start (EV_P_ ev_idle *w) 4939ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3308{ 4940{
3309 if (expect_false (ev_is_active (w))) 4941 if (ecb_expect_false (ev_is_active (w)))
3310 return; 4942 return;
3311 4943
3312 pri_adjust (EV_A_ (W)w); 4944 pri_adjust (EV_A_ (W)w);
3313 4945
3314 EV_FREQUENT_CHECK; 4946 EV_FREQUENT_CHECK;
… …
3317 int active = ++idlecnt [ABSPRI (w)]; 4949 int active = ++idlecnt [ABSPRI (w)];
3318 4950
3319 ++idleall; 4951 ++idleall;
3320 ev_start (EV_A_ (W)w, active); 4952 ev_start (EV_A_ (W)w, active);
3321 4953
3322 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4954 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3323 idles [ABSPRI (w)][active - 1] = w; 4955 idles [ABSPRI (w)][active - 1] = w;
3324 } 4956 }
3325 4957
3326 EV_FREQUENT_CHECK; 4958 EV_FREQUENT_CHECK;
3327} 4959}
3328 4960
3329void 4961void
3330ev_idle_stop (EV_P_ ev_idle *w) 4962ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3331{ 4963{
3332 clear_pending (EV_A_ (W)w); 4964 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4965 if (ecb_expect_false (!ev_is_active (w)))
3334 return; 4966 return;
3335 4967
3336 EV_FREQUENT_CHECK; 4968 EV_FREQUENT_CHECK;
3337 4969
3338 { 4970 {
… …
3349} 4981}
3350#endif 4982#endif
3351 4983
3352#if EV_PREPARE_ENABLE 4984#if EV_PREPARE_ENABLE
3353void 4985void
3354ev_prepare_start (EV_P_ ev_prepare *w) 4986ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 4987{
3356 if (expect_false (ev_is_active (w))) 4988 if (ecb_expect_false (ev_is_active (w)))
3357 return; 4989 return;
3358 4990
3359 EV_FREQUENT_CHECK; 4991 EV_FREQUENT_CHECK;
3360 4992
3361 ev_start (EV_A_ (W)w, ++preparecnt); 4993 ev_start (EV_A_ (W)w, ++preparecnt);
3362 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4994 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3363 prepares [preparecnt - 1] = w; 4995 prepares [preparecnt - 1] = w;
3364 4996
3365 EV_FREQUENT_CHECK; 4997 EV_FREQUENT_CHECK;
3366} 4998}
3367 4999
3368void 5000void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 5001ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3370{ 5002{
3371 clear_pending (EV_A_ (W)w); 5003 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 5004 if (ecb_expect_false (!ev_is_active (w)))
3373 return; 5005 return;
3374 5006
3375 EV_FREQUENT_CHECK; 5007 EV_FREQUENT_CHECK;
3376 5008
3377 { 5009 {
… …
3387} 5019}
3388#endif 5020#endif
3389 5021
3390#if EV_CHECK_ENABLE 5022#if EV_CHECK_ENABLE
3391void 5023void
3392ev_check_start (EV_P_ ev_check *w) 5024ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 5025{
3394 if (expect_false (ev_is_active (w))) 5026 if (ecb_expect_false (ev_is_active (w)))
3395 return; 5027 return;
3396 5028
3397 EV_FREQUENT_CHECK; 5029 EV_FREQUENT_CHECK;
3398 5030
3399 ev_start (EV_A_ (W)w, ++checkcnt); 5031 ev_start (EV_A_ (W)w, ++checkcnt);
3400 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5032 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3401 checks [checkcnt - 1] = w; 5033 checks [checkcnt - 1] = w;
3402 5034
3403 EV_FREQUENT_CHECK; 5035 EV_FREQUENT_CHECK;
3404} 5036}
3405 5037
3406void 5038void
3407ev_check_stop (EV_P_ ev_check *w) 5039ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3408{ 5040{
3409 clear_pending (EV_A_ (W)w); 5041 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 5042 if (ecb_expect_false (!ev_is_active (w)))
3411 return; 5043 return;
3412 5044
3413 EV_FREQUENT_CHECK; 5045 EV_FREQUENT_CHECK;
3414 5046
3415 { 5047 {
… …
3424 EV_FREQUENT_CHECK; 5056 EV_FREQUENT_CHECK;
3425} 5057}
3426#endif 5058#endif
3427 5059
3428#if EV_EMBED_ENABLE 5060#if EV_EMBED_ENABLE
3429void noinline 5061ecb_noinline
5062void
3430ev_embed_sweep (EV_P_ ev_embed *w) 5063ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3431{ 5064{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 5065 ev_run (w->other, EVRUN_NOWAIT);
3433} 5066}
3434 5067
3435static void 5068static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 5069embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 5070{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5071 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 5072
3440 if (ev_cb (w)) 5073 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5074 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 5075 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 5076 ev_run (w->other, EVRUN_NOWAIT);
3444} 5077}
3445 5078
3446static void 5079static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5080embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 5081{
… …
3452 EV_P = w->other; 5085 EV_P = w->other;
3453 5086
3454 while (fdchangecnt) 5087 while (fdchangecnt)
3455 { 5088 {
3456 fd_reify (EV_A); 5089 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5090 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 5091 }
3459 } 5092 }
3460} 5093}
3461 5094
5095#if EV_FORK_ENABLE
3462static void 5096static void
3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5097embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3464{ 5098{
3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5099 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3466 5100
… …
3468 5102
3469 { 5103 {
3470 EV_P = w->other; 5104 EV_P = w->other;
3471 5105
3472 ev_loop_fork (EV_A); 5106 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5107 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 5108 }
3475 5109
3476 ev_embed_start (EV_A_ w); 5110 ev_embed_start (EV_A_ w);
3477} 5111}
5112#endif
3478 5113
3479#if 0 5114#if 0
3480static void 5115static void
3481embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5116embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3482{ 5117{
3483 ev_idle_stop (EV_A_ idle); 5118 ev_idle_stop (EV_A_ idle);
3484} 5119}
3485#endif 5120#endif
3486 5121
3487void 5122void
3488ev_embed_start (EV_P_ ev_embed *w) 5123ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3489{ 5124{
3490 if (expect_false (ev_is_active (w))) 5125 if (ecb_expect_false (ev_is_active (w)))
3491 return; 5126 return;
3492 5127
3493 { 5128 {
3494 EV_P = w->other; 5129 EV_P = w->other;
3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5130 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3503 5138
3504 ev_prepare_init (&w->prepare, embed_prepare_cb); 5139 ev_prepare_init (&w->prepare, embed_prepare_cb);
3505 ev_set_priority (&w->prepare, EV_MINPRI); 5140 ev_set_priority (&w->prepare, EV_MINPRI);
3506 ev_prepare_start (EV_A_ &w->prepare); 5141 ev_prepare_start (EV_A_ &w->prepare);
3507 5142
5143#if EV_FORK_ENABLE
3508 ev_fork_init (&w->fork, embed_fork_cb); 5144 ev_fork_init (&w->fork, embed_fork_cb);
3509 ev_fork_start (EV_A_ &w->fork); 5145 ev_fork_start (EV_A_ &w->fork);
5146#endif
3510 5147
3511 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5148 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3512 5149
3513 ev_start (EV_A_ (W)w, 1); 5150 ev_start (EV_A_ (W)w, 1);
3514 5151
3515 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
3516} 5153}
3517 5154
3518void 5155void
3519ev_embed_stop (EV_P_ ev_embed *w) 5156ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3520{ 5157{
3521 clear_pending (EV_A_ (W)w); 5158 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 5159 if (ecb_expect_false (!ev_is_active (w)))
3523 return; 5160 return;
3524 5161
3525 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
3526 5163
3527 ev_io_stop (EV_A_ &w->io); 5164 ev_io_stop (EV_A_ &w->io);
3528 ev_prepare_stop (EV_A_ &w->prepare); 5165 ev_prepare_stop (EV_A_ &w->prepare);
5166#if EV_FORK_ENABLE
3529 ev_fork_stop (EV_A_ &w->fork); 5167 ev_fork_stop (EV_A_ &w->fork);
5168#endif
3530 5169
3531 ev_stop (EV_A_ (W)w); 5170 ev_stop (EV_A_ (W)w);
3532 5171
3533 EV_FREQUENT_CHECK; 5172 EV_FREQUENT_CHECK;
3534} 5173}
3535#endif 5174#endif
3536 5175
3537#if EV_FORK_ENABLE 5176#if EV_FORK_ENABLE
3538void 5177void
3539ev_fork_start (EV_P_ ev_fork *w) 5178ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 5179{
3541 if (expect_false (ev_is_active (w))) 5180 if (ecb_expect_false (ev_is_active (w)))
3542 return; 5181 return;
3543 5182
3544 EV_FREQUENT_CHECK; 5183 EV_FREQUENT_CHECK;
3545 5184
3546 ev_start (EV_A_ (W)w, ++forkcnt); 5185 ev_start (EV_A_ (W)w, ++forkcnt);
3547 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5186 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3548 forks [forkcnt - 1] = w; 5187 forks [forkcnt - 1] = w;
3549 5188
3550 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
3551} 5190}
3552 5191
3553void 5192void
3554ev_fork_stop (EV_P_ ev_fork *w) 5193ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3555{ 5194{
3556 clear_pending (EV_A_ (W)w); 5195 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 5196 if (ecb_expect_false (!ev_is_active (w)))
3558 return; 5197 return;
3559 5198
3560 EV_FREQUENT_CHECK; 5199 EV_FREQUENT_CHECK;
3561 5200
3562 { 5201 {
… …
3570 5209
3571 EV_FREQUENT_CHECK; 5210 EV_FREQUENT_CHECK;
3572} 5211}
3573#endif 5212#endif
3574 5213
5214#if EV_CLEANUP_ENABLE
5215void
5216ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5217{
5218 if (ecb_expect_false (ev_is_active (w)))
5219 return;
5220
5221 EV_FREQUENT_CHECK;
5222
5223 ev_start (EV_A_ (W)w, ++cleanupcnt);
5224 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5225 cleanups [cleanupcnt - 1] = w;
5226
5227 /* cleanup watchers should never keep a refcount on the loop */
5228 ev_unref (EV_A);
5229 EV_FREQUENT_CHECK;
5230}
5231
5232void
5233ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5234{
5235 clear_pending (EV_A_ (W)w);
5236 if (ecb_expect_false (!ev_is_active (w)))
5237 return;
5238
5239 EV_FREQUENT_CHECK;
5240 ev_ref (EV_A);
5241
5242 {
5243 int active = ev_active (w);
5244
5245 cleanups [active - 1] = cleanups [--cleanupcnt];
5246 ev_active (cleanups [active - 1]) = active;
5247 }
5248
5249 ev_stop (EV_A_ (W)w);
5250
5251 EV_FREQUENT_CHECK;
5252}
5253#endif
5254
3575#if EV_ASYNC_ENABLE 5255#if EV_ASYNC_ENABLE
3576void 5256void
3577ev_async_start (EV_P_ ev_async *w) 5257ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3578{ 5258{
3579 if (expect_false (ev_is_active (w))) 5259 if (ecb_expect_false (ev_is_active (w)))
3580 return; 5260 return;
3581 5261
5262 w->sent = 0;
5263
3582 evpipe_init (EV_A); 5264 evpipe_init (EV_A);
3583 5265
3584 EV_FREQUENT_CHECK; 5266 EV_FREQUENT_CHECK;
3585 5267
3586 ev_start (EV_A_ (W)w, ++asynccnt); 5268 ev_start (EV_A_ (W)w, ++asynccnt);
3587 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5269 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3588 asyncs [asynccnt - 1] = w; 5270 asyncs [asynccnt - 1] = w;
3589 5271
3590 EV_FREQUENT_CHECK; 5272 EV_FREQUENT_CHECK;
3591} 5273}
3592 5274
3593void 5275void
3594ev_async_stop (EV_P_ ev_async *w) 5276ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3595{ 5277{
3596 clear_pending (EV_A_ (W)w); 5278 clear_pending (EV_A_ (W)w);
3597 if (expect_false (!ev_is_active (w))) 5279 if (ecb_expect_false (!ev_is_active (w)))
3598 return; 5280 return;
3599 5281
3600 EV_FREQUENT_CHECK; 5282 EV_FREQUENT_CHECK;
3601 5283
3602 { 5284 {
… …
3610 5292
3611 EV_FREQUENT_CHECK; 5293 EV_FREQUENT_CHECK;
3612} 5294}
3613 5295
3614void 5296void
3615ev_async_send (EV_P_ ev_async *w) 5297ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3616{ 5298{
3617 w->sent = 1; 5299 w->sent = 1;
3618 evpipe_write (EV_A_ &async_pending); 5300 evpipe_write (EV_A_ &async_pending);
3619} 5301}
3620#endif 5302#endif
… …
3657 5339
3658 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5340 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3659} 5341}
3660 5342
3661void 5343void
3662ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5344ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3663{ 5345{
3664 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5346 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3665
3666 if (expect_false (!once))
3667 {
3668 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3669 return;
3670 }
3671 5347
3672 once->cb = cb; 5348 once->cb = cb;
3673 once->arg = arg; 5349 once->arg = arg;
3674 5350
3675 ev_init (&once->io, once_cb_io); 5351 ev_init (&once->io, once_cb_io);
… …
3688} 5364}
3689 5365
3690/*****************************************************************************/ 5366/*****************************************************************************/
3691 5367
3692#if EV_WALK_ENABLE 5368#if EV_WALK_ENABLE
5369ecb_cold
3693void 5370void
3694ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3695{ 5372{
3696 int i, j; 5373 int i, j;
3697 ev_watcher_list *wl, *wn; 5374 ev_watcher_list *wl, *wn;
3698 5375
3699 if (types & (EV_IO | EV_EMBED)) 5376 if (types & (EV_IO | EV_EMBED))
… …
3742 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3743#endif 5420#endif
3744 5421
3745#if EV_IDLE_ENABLE 5422#if EV_IDLE_ENABLE
3746 if (types & EV_IDLE) 5423 if (types & EV_IDLE)
3747 for (j = NUMPRI; i--; ) 5424 for (j = NUMPRI; j--; )
3748 for (i = idlecnt [j]; i--; ) 5425 for (i = idlecnt [j]; i--; )
3749 cb (EV_A_ EV_IDLE, idles [j][i]); 5426 cb (EV_A_ EV_IDLE, idles [j][i]);
3750#endif 5427#endif
3751 5428
3752#if EV_FORK_ENABLE 5429#if EV_FORK_ENABLE
… …
3805 5482
3806#if EV_MULTIPLICITY 5483#if EV_MULTIPLICITY
3807 #include "ev_wrap.h" 5484 #include "ev_wrap.h"
3808#endif 5485#endif
3809 5486
3810#ifdef __cplusplus
3811}
3812#endif
3813

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