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Comparing libev/ev.c (file contents):
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC vs.
Revision 1.523 by root, Tue Jan 21 23:52:35 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 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) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
473 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
474#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
476 603
604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
605/* ECB.H BEGIN */
606/*
607 * libecb - http://software.schmorp.de/pkg/libecb
608 *
609 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
610 * Copyright (©) 2011 Emanuele Giaquinta
611 * All rights reserved.
612 *
613 * Redistribution and use in source and binary forms, with or without modifica-
614 * tion, are permitted provided that the following conditions are met:
615 *
616 * 1. Redistributions of source code must retain the above copyright notice,
617 * this list of conditions and the following disclaimer.
618 *
619 * 2. Redistributions in binary form must reproduce the above copyright
620 * notice, this list of conditions and the following disclaimer in the
621 * documentation and/or other materials provided with the distribution.
622 *
623 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
624 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
625 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
626 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
627 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
644 */
645
646#ifndef ECB_H
647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
653
654#ifdef _WIN32
655 typedef signed char int8_t;
656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
659 typedef signed short int16_t;
660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
663 typedef signed int int32_t;
664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
477#if __GNUC__ >= 4 667 #if __GNUC__
478# define expect(expr,value) __builtin_expect ((expr),(value)) 668 typedef signed long long int64_t;
479# define noinline __attribute__ ((noinline)) 669 typedef unsigned long long uint64_t;
670 #else /* _MSC_VER || __BORLANDC__ */
671 typedef signed __int64 int64_t;
672 typedef unsigned __int64 uint64_t;
673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
480#else 685#else
481# define expect(expr,value) (expr) 686 #include <inttypes.h>
482# define noinline 687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
483# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 688 #define ECB_PTRSIZE 8
484# define inline 689 #else
690 #define ECB_PTRSIZE 4
691 #endif
485# endif 692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
486#endif 702 #endif
703#endif
487 704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
712#endif
713
714/* many compilers define _GNUC_ to some versions but then only implement
715 * what their idiot authors think are the "more important" extensions,
716 * causing enormous grief in return for some better fake benchmark numbers.
717 * or so.
718 * we try to detect these and simply assume they are not gcc - if they have
719 * an issue with that they should have done it right in the first place.
720 */
721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
722 #define ECB_GCC_VERSION(major,minor) 0
723#else
724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
766#endif
767
768/*****************************************************************************/
769
770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
772
773#if ECB_NO_THREADS
774 #define ECB_NO_SMP 1
775#endif
776
777#if ECB_NO_SMP
778 #define ECB_MEMORY_FENCE do { } while (0)
779#endif
780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
790#ifndef ECB_MEMORY_FENCE
791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
793 #if __i386 || __i386__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
797 #elif ECB_GCC_AMD64
798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
823 #elif defined __s390__ || defined __s390x__
824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
842 #endif
843 #endif
844#endif
845
846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
862 #define ECB_MEMORY_FENCE __sync_synchronize ()
863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
874 #elif defined _WIN32
875 #include <WinNT.h>
876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
878 #include <mbarrier.h>
879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
896 #endif
897#endif
898
899#ifndef ECB_MEMORY_FENCE
900 #if !ECB_AVOID_PTHREADS
901 /*
902 * if you get undefined symbol references to pthread_mutex_lock,
903 * or failure to find pthread.h, then you should implement
904 * the ECB_MEMORY_FENCE operations for your cpu/compiler
905 * OR provide pthread.h and link against the posix thread library
906 * of your system.
907 */
908 #include <pthread.h>
909 #define ECB_NEEDS_PTHREADS 1
910 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
911
912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
914 #endif
915#endif
916
917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
919#endif
920
921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
923#endif
924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
929/*****************************************************************************/
930
931#if ECB_CPP
932 #define ecb_inline static inline
933#elif ECB_GCC_VERSION(2,5)
934 #define ecb_inline static __inline__
935#elif ECB_C99
936 #define ecb_inline static inline
937#else
938 #define ecb_inline static
939#endif
940
941#if ECB_GCC_VERSION(3,3)
942 #define ecb_restrict __restrict__
943#elif ECB_C99
944 #define ecb_restrict restrict
945#else
946 #define ecb_restrict
947#endif
948
949typedef int ecb_bool;
950
951#define ECB_CONCAT_(a, b) a ## b
952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
953#define ECB_STRINGIFY_(a) # a
954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
956
957#define ecb_function_ ecb_inline
958
959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
983#else
984 #define ecb_prefetch(addr,rw,locality)
985#endif
986
987/* no emulation for ecb_decltype */
988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
993 #define ecb_decltype(x) __typeof__ (x)
994#endif
995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
1013 #define ecb_noinline ecb_attribute ((__noinline__))
1014#endif
1015
1016#define ecb_unused ecb_attribute ((__unused__))
1017#define ecb_const ecb_attribute ((__const__))
1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
1031
1032#if ECB_GCC_VERSION(4,3)
1033 #define ecb_artificial ecb_attribute ((__artificial__))
1034 #define ecb_hot ecb_attribute ((__hot__))
1035 #define ecb_cold ecb_attribute ((__cold__))
1036#else
1037 #define ecb_artificial
1038 #define ecb_hot
1039 #define ecb_cold
1040#endif
1041
1042/* put around conditional expressions if you are very sure that the */
1043/* expression is mostly true or mostly false. note that these return */
1044/* booleans, not the expression. */
488#define expect_false(expr) expect ((expr) != 0, 0) 1045#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489#define expect_true(expr) expect ((expr) != 0, 1) 1046#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1047/* for compatibility to the rest of the world */
1048#define ecb_likely(expr) ecb_expect_true (expr)
1049#define ecb_unlikely(expr) ecb_expect_false (expr)
1050
1051/* count trailing zero bits and count # of one bits */
1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1059 #define ecb_ctz32(x) __builtin_ctz (x)
1060 #define ecb_ctz64(x) __builtin_ctzll (x)
1061 #define ecb_popcount32(x) __builtin_popcount (x)
1062 /* no popcountll */
1063#else
1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1065 ecb_function_ ecb_const int
1066 ecb_ctz32 (uint32_t x)
1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
1073 int r = 0;
1074
1075 x &= ~x + 1; /* this isolates the lowest bit */
1076
1077#if ECB_branchless_on_i386
1078 r += !!(x & 0xaaaaaaaa) << 0;
1079 r += !!(x & 0xcccccccc) << 1;
1080 r += !!(x & 0xf0f0f0f0) << 2;
1081 r += !!(x & 0xff00ff00) << 3;
1082 r += !!(x & 0xffff0000) << 4;
1083#else
1084 if (x & 0xaaaaaaaa) r += 1;
1085 if (x & 0xcccccccc) r += 2;
1086 if (x & 0xf0f0f0f0) r += 4;
1087 if (x & 0xff00ff00) r += 8;
1088 if (x & 0xffff0000) r += 16;
1089#endif
1090
1091 return r;
1092#endif
1093 }
1094
1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1096 ecb_function_ ecb_const int
1097 ecb_ctz64 (uint64_t x)
1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
1104 int shift = x & 0xffffffff ? 0 : 32;
1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
1107 }
1108
1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1110 ecb_function_ ecb_const int
1111 ecb_popcount32 (uint32_t x)
1112 {
1113 x -= (x >> 1) & 0x55555555;
1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
1116 x *= 0x01010101;
1117
1118 return x >> 24;
1119 }
1120
1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
1129 int r = 0;
1130
1131 if (x >> 16) { x >>= 16; r += 16; }
1132 if (x >> 8) { x >>= 8; r += 8; }
1133 if (x >> 4) { x >>= 4; r += 4; }
1134 if (x >> 2) { x >>= 2; r += 2; }
1135 if (x >> 1) { r += 1; }
1136
1137 return r;
1138#endif
1139 }
1140
1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
1149 int r = 0;
1150
1151 if (x >> 32) { x >>= 32; r += 32; }
1152
1153 return r + ecb_ld32 (x);
1154#endif
1155 }
1156#endif
1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1165{
1166 return ( (x * 0x0802U & 0x22110U)
1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1168}
1169
1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1172{
1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1176 x = ( x >> 8 ) | ( x << 8);
1177
1178 return x;
1179}
1180
1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1183{
1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1188 x = ( x >> 16 ) | ( x << 16);
1189
1190 return x;
1191}
1192
1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
1194/* so for this version we are lazy */
1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1196ecb_function_ ecb_const int
1197ecb_popcount64 (uint64_t x)
1198{
1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1200}
1201
1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1210
1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1219
1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1271#else
1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1273 ecb_function_ ecb_const uint16_t
1274 ecb_bswap16 (uint16_t x)
1275 {
1276 return ecb_rotl16 (x, 8);
1277 }
1278
1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1280 ecb_function_ ecb_const uint32_t
1281 ecb_bswap32 (uint32_t x)
1282 {
1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1284 }
1285
1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1287 ecb_function_ ecb_const uint64_t
1288 ecb_bswap64 (uint64_t x)
1289 {
1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1291 }
1292#endif
1293
1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1295 #define ecb_unreachable() __builtin_unreachable ()
1296#else
1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1300#endif
1301
1302/* try to tell the compiler that some condition is definitely true */
1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1304
1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1306ecb_inline ecb_const uint32_t
1307ecb_byteorder_helper (void)
1308{
1309 /* the union code still generates code under pressure in gcc, */
1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
1331}
1332
1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
1409
1410#if ECB_GCC_VERSION(3,0) || ECB_C99
1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1412#else
1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1414#endif
1415
1416#if ECB_CPP
1417 template<typename T>
1418 static inline T ecb_div_rd (T val, T div)
1419 {
1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1421 }
1422 template<typename T>
1423 static inline T ecb_div_ru (T val, T div)
1424 {
1425 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1426 }
1427#else
1428 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1429 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1430#endif
1431
1432#if ecb_cplusplus_does_not_suck
1433 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1434 template<typename T, int N>
1435 static inline int ecb_array_length (const T (&arr)[N])
1436 {
1437 return N;
1438 }
1439#else
1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1441#endif
1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
1749#endif
1750
1751/* ECB.H END */
1752
1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1754/* if your architecture doesn't need memory fences, e.g. because it is
1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1757 * libev, in which cases the memory fences become nops.
1758 * alternatively, you can remove this #error and link against libpthread,
1759 * which will then provide the memory fences.
1760 */
1761# error "memory fences not defined for your architecture, please report"
1762#endif
1763
1764#ifndef ECB_MEMORY_FENCE
1765# define ECB_MEMORY_FENCE do { } while (0)
1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1768#endif
1769
490#define inline_size static inline 1770#define inline_size ecb_inline
491 1771
492#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
493# define inline_speed static inline 1773# define inline_speed ecb_inline
494#else 1774#else
495# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
496#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
497 1843
498#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
499 1845
500#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
501# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
502#else 1848#else
503# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
504#endif 1850#endif
505 1851
506#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
507#define EMPTY2(a,b) /* used to suppress some warnings */
508 1853
509typedef ev_watcher *W; 1854typedef ev_watcher *W;
510typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
511typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
512 1857
… …
537# include "ev_win32.c" 1882# include "ev_win32.c"
538#endif 1883#endif
539 1884
540/*****************************************************************************/ 1885/*****************************************************************************/
541 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1891/* define a suitable floor function (only used by periodics atm) */
1892
1893#if EV_USE_FLOOR
1894# include <math.h>
1895# define ev_floor(v) floor (v)
1896#else
1897
1898#include <float.h>
1899
1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1902static ev_tstamp
1903ev_floor (ev_tstamp v)
1904{
1905 /* the choice of shift factor is not terribly important */
1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1908#else
1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1910#endif
1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1920 /* argument too large for an unsigned long? then reduce it */
1921 if (ecb_expect_false (v >= shift))
1922 {
1923 ev_tstamp f;
1924
1925 if (v == v - 1.)
1926 return v; /* very large numbers are assumed to be integer */
1927
1928 f = shift * ev_floor (v * (1. / shift));
1929 return f + ev_floor (v - f);
1930 }
1931
1932 /* fits into an unsigned long */
1933 return (unsigned long)v;
1934}
1935
1936#endif
1937
1938/*****************************************************************************/
1939
1940#ifdef __linux
1941# include <sys/utsname.h>
1942#endif
1943
1944ecb_noinline ecb_cold
1945static unsigned int
1946ev_linux_version (void)
1947{
1948#ifdef __linux
1949 unsigned int v = 0;
1950 struct utsname buf;
1951 int i;
1952 char *p = buf.release;
1953
1954 if (uname (&buf))
1955 return 0;
1956
1957 for (i = 3+1; --i; )
1958 {
1959 unsigned int c = 0;
1960
1961 for (;;)
1962 {
1963 if (*p >= '0' && *p <= '9')
1964 c = c * 10 + *p++ - '0';
1965 else
1966 {
1967 p += *p == '.';
1968 break;
1969 }
1970 }
1971
1972 v = (v << 8) | c;
1973 }
1974
1975 return v;
1976#else
1977 return 0;
1978#endif
1979}
1980
1981/*****************************************************************************/
1982
542#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
543static void noinline 1984ecb_noinline ecb_cold
1985static void
544ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
545{ 1987{
546 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
547} 1989}
548#endif 1990#endif
549 1991
550static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
551 1993
1994ecb_cold
552void 1995void
553ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
554{ 1997{
555 syserr_cb = cb; 1998 syserr_cb = cb;
556} 1999}
557 2000
558static void noinline 2001ecb_noinline ecb_cold
2002static void
559ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
560{ 2004{
561 if (!msg) 2005 if (!msg)
562 msg = "(libev) system error"; 2006 msg = "(libev) system error";
563 2007
564 if (syserr_cb) 2008 if (syserr_cb)
565 syserr_cb (msg); 2009 syserr_cb (msg);
566 else 2010 else
567 { 2011 {
568#if EV_AVOID_STDIO 2012#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 2013 ev_printerr (msg);
572 ev_printerr (": "); 2014 ev_printerr (": ");
573 ev_printerr (err); 2015 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 2016 ev_printerr ("\n");
575#else 2017#else
576 perror (msg); 2018 perror (msg);
577#endif 2019#endif
578 abort (); 2020 abort ();
579 } 2021 }
580} 2022}
581 2023
582static void * 2024static void *
583ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
584{ 2026{
585#if __GLIBC__
586 return realloc (ptr, size);
587#else
588 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
589 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
590 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
591 */ 2032 */
592 2033
593 if (size) 2034 if (size)
594 return realloc (ptr, size); 2035 return realloc (ptr, size);
595 2036
596 free (ptr); 2037 free (ptr);
597 return 0; 2038 return 0;
598#endif
599} 2039}
600 2040
601static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
602 2042
2043ecb_cold
603void 2044void
604ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
605{ 2046{
606 alloc = cb; 2047 alloc = cb;
607} 2048}
608 2049
609inline_speed void * 2050inline_speed void *
… …
612 ptr = alloc (ptr, size); 2053 ptr = alloc (ptr, size);
613 2054
614 if (!ptr && size) 2055 if (!ptr && size)
615 { 2056 {
616#if EV_AVOID_STDIO 2057#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 2058 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 2059#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 2060 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 2061#endif
621 abort (); 2062 abort ();
622 } 2063 }
623 2064
624 return ptr; 2065 return ptr;
… …
636typedef struct 2077typedef struct
637{ 2078{
638 WL head; 2079 WL head;
639 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
640 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
642 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
643#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 2086#endif
646#if EV_SELECT_IS_WINSOCKET 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 2088 SOCKET handle;
2089#endif
2090#if EV_USE_IOCP
2091 OVERLAPPED or, ow;
648#endif 2092#endif
649} ANFD; 2093} ANFD;
650 2094
651/* stores the pending event set for a given watcher */ 2095/* stores the pending event set for a given watcher */
652typedef struct 2096typedef struct
… …
694 #undef VAR 2138 #undef VAR
695 }; 2139 };
696 #include "ev_wrap.h" 2140 #include "ev_wrap.h"
697 2141
698 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
699 struct ev_loop *ev_default_loop_ptr; 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
700 2144
701#else 2145#else
702 2146
703 ev_tstamp ev_rt_now; 2147 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; 2148 #define VAR(name,decl) static decl;
705 #include "ev_vars.h" 2149 #include "ev_vars.h"
706 #undef VAR 2150 #undef VAR
707 2151
708 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
709 2153
710#endif 2154#endif
711 2155
712#if EV_FEATURE_API 2156#if EV_FEATURE_API
713# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
714# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
715# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
716#else 2160#else
717# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 2164#endif
721 2165
722#define EVUNLOOP_RECURSE 0x80 2166#define EVBREAK_RECURSE 0x80
723 2167
724/*****************************************************************************/ 2168/*****************************************************************************/
725 2169
726#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
727ev_tstamp 2171ev_tstamp
728ev_time (void) 2172ev_time (void) EV_NOEXCEPT
729{ 2173{
730#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
731 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
732 { 2176 {
733 struct timespec ts; 2177 struct timespec ts;
734 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
735 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
736 } 2180 }
737#endif 2181#endif
738 2182
2183 {
739 struct timeval tv; 2184 struct timeval tv;
740 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
741 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
742} 2188}
743#endif 2189#endif
744 2190
745inline_size ev_tstamp 2191inline_size ev_tstamp
746get_clock (void) 2192get_clock (void)
747{ 2193{
748#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
749 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
750 { 2196 {
751 struct timespec ts; 2197 struct timespec ts;
752 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
753 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
754 } 2200 }
755#endif 2201#endif
756 2202
757 return ev_time (); 2203 return ev_time ();
758} 2204}
759 2205
760#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
761ev_tstamp 2207ev_tstamp
762ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
763{ 2209{
764 return ev_rt_now; 2210 return ev_rt_now;
765} 2211}
766#endif 2212#endif
767 2213
768void 2214void
769ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
770{ 2216{
771 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
772 { 2218 {
773#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
774 struct timespec ts; 2220 struct timespec ts;
775 2221
776 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
777 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2228#else
781 struct timeval tv; 2229 struct timeval tv;
782 2230
783 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
802 2250
803 do 2251 do
804 ncur <<= 1; 2252 ncur <<= 1;
805 while (cnt > ncur); 2253 while (cnt > ncur);
806 2254
807 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2255 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
808 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2256 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
809 { 2257 {
810 ncur *= elem; 2258 ncur *= elem;
811 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2259 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
812 ncur = ncur - sizeof (void *) * 4; 2260 ncur = ncur - sizeof (void *) * 4;
… …
814 } 2262 }
815 2263
816 return ncur; 2264 return ncur;
817} 2265}
818 2266
819static noinline void * 2267ecb_noinline ecb_cold
2268static void *
820array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
821{ 2270{
822 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
823 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
824} 2273}
825 2274
2275#define array_needsize_noinit(base,offset,count)
2276
826#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
827 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
828 2279
829#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
830 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
831 { \ 2282 { \
832 int ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
833 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
834 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
835 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
836 } 2287 }
837 2288
838#if 0 2289#if 0
839#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
840 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 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 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
850 2301
851/*****************************************************************************/ 2302/*****************************************************************************/
852 2303
853/* dummy callback for pending events */ 2304/* dummy callback for pending events */
854static void noinline 2305ecb_noinline
2306static void
855pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
856{ 2308{
857} 2309}
858 2310
859void noinline 2311ecb_noinline
2312void
860ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
861{ 2314{
862 W w_ = (W)w; 2315 W w_ = (W)w;
863 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
864 2317
865 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
866 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
867 else 2320 else
868 { 2321 {
869 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
870 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
871 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
872 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
873 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
874} 2329}
875 2330
876inline_speed void 2331inline_speed void
877feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
878{ 2333{
879 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
880 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
881} 2336}
882 2337
883inline_size void 2338inline_size void
884feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
919inline_speed void 2374inline_speed void
920fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
921{ 2376{
922 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
923 2378
924 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
925 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
926} 2381}
927 2382
928void 2383void
929ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
930{ 2385{
931 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
932 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
933} 2388}
934 2389
… …
937inline_size void 2392inline_size void
938fd_reify (EV_P) 2393fd_reify (EV_P)
939{ 2394{
940 int i; 2395 int i;
941 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchangesd to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that menas thast for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
942 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
2411 {
2412 int fd = fdchanges [i];
2413 ANFD *anfd = anfds + fd;
2414
2415 if (anfd->reify & EV__IOFDSET && anfd->head)
2416 {
2417 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2418
2419 if (handle != anfd->handle)
2420 {
2421 unsigned long arg;
2422
2423 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2424
2425 /* handle changed, but fd didn't - we need to do it in two steps */
2426 backend_modify (EV_A_ fd, anfd->events, 0);
2427 anfd->events = 0;
2428 anfd->handle = handle;
2429 }
2430 }
2431 }
2432#endif
2433
2434 for (i = 0; i < changecnt; ++i)
943 { 2435 {
944 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
946 ev_io *w; 2438 ev_io *w;
947 2439
948 unsigned char events = 0; 2440 unsigned char o_events = anfd->events;
2441 unsigned char o_reify = anfd->reify;
949 2442
950 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2443 anfd->reify = 0;
951 events |= (unsigned char)w->events;
952 2444
953#if EV_SELECT_IS_WINSOCKET 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954 if (events)
955 { 2446 {
956 unsigned long arg; 2447 anfd->events = 0;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2448
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2450 anfd->events |= (unsigned char)w->events;
2451
2452 if (o_events != anfd->events)
2453 o_reify = EV__IOFDSET; /* actually |= */
959 } 2454 }
960#endif
961 2455
962 { 2456 if (o_reify & EV__IOFDSET)
963 unsigned char o_events = anfd->events;
964 unsigned char o_reify = anfd->reify;
965
966 anfd->reify = 0;
967 anfd->events = events;
968
969 if (o_events != events || o_reify & EV__IOFDSET)
970 backend_modify (EV_A_ fd, o_events, events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
971 } 2458 }
972 }
973 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
974 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
975} 2468}
976 2469
977/* something about the given fd changed */ 2470/* something about the given fd changed */
978inline_size void 2471inline_size
2472void
979fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
980{ 2474{
981 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
982 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
983 2477
984 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
985 { 2479 {
986 ++fdchangecnt; 2480 ++fdchangecnt;
987 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
988 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
989 } 2483 }
990} 2484}
991 2485
992/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993inline_speed void 2487inline_speed ecb_cold void
994fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
995{ 2489{
996 ev_io *w; 2490 ev_io *w;
997 2491
998 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1001 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002 } 2496 }
1003} 2497}
1004 2498
1005/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1006inline_size int 2500inline_size ecb_cold int
1007fd_valid (int fd) 2501fd_valid (int fd)
1008{ 2502{
1009#ifdef _WIN32 2503#ifdef _WIN32
1010 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011#else 2505#else
1012 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1013#endif 2507#endif
1014} 2508}
1015 2509
1016/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1017static void noinline 2511ecb_noinline ecb_cold
2512static void
1018fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1019{ 2514{
1020 int fd; 2515 int fd;
1021 2516
1022 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1024 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1025 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1026} 2521}
1027 2522
1028/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1029static void noinline 2524ecb_noinline ecb_cold
2525static void
1030fd_enomem (EV_P) 2526fd_enomem (EV_P)
1031{ 2527{
1032 int fd; 2528 int fd;
1033 2529
1034 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1038 break; 2534 break;
1039 } 2535 }
1040} 2536}
1041 2537
1042/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1043static void noinline 2539ecb_noinline
2540static void
1044fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1045{ 2542{
1046 int fd; 2543 int fd;
1047 2544
1048 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1101 ev_tstamp minat; 2598 ev_tstamp minat;
1102 ANHE *minpos; 2599 ANHE *minpos;
1103 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1104 2601
1105 /* find minimum child */ 2602 /* find minimum child */
1106 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1107 { 2604 {
1108 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1109 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1110 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1111 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1112 } 2609 }
1113 else if (pos < E) 2610 else if (pos < E)
1114 { 2611 {
1115 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1116 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1117 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1118 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1119 } 2616 }
1120 else 2617 else
1121 break; 2618 break;
1122 2619
1123 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1131 2628
1132 heap [k] = he; 2629 heap [k] = he;
1133 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1134} 2631}
1135 2632
1136#else /* 4HEAP */ 2633#else /* not 4HEAP */
1137 2634
1138#define HEAP0 1 2635#define HEAP0 1
1139#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1140#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1141 2638
… …
1213 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1214} 2711}
1215 2712
1216/*****************************************************************************/ 2713/*****************************************************************************/
1217 2714
1218/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1219typedef struct 2716typedef struct
1220{ 2717{
1221 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1222#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1223 EV_P; 2720 EV_P;
… …
1229 2726
1230/*****************************************************************************/ 2727/*****************************************************************************/
1231 2728
1232#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233 2730
1234static void noinline 2731ecb_noinline ecb_cold
2732static void
1235evpipe_init (EV_P) 2733evpipe_init (EV_P)
1236{ 2734{
1237 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1238 { 2736 {
2737 int fds [2];
2738
1239# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1240 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1241 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1242 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1243 2744
1244 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1245 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1246 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1247 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1248 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1249 } 2806 }
1250 else 2807 else
1251# endif 2808#endif
1252 { 2809 {
1253 while (pipe (evpipe)) 2810#ifdef _WIN32
1254 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1255 2812 DWORD sent;
1256 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1257 fd_intern (evpipe [1]); 2814 buf.len = 1;
1258 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2816#else
2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1259 } 2819 }
1260
1261 ev_io_start (EV_A_ &pipe_w);
1262 ev_unref (EV_A); /* watcher should not keep loop alive */
1263 }
1264}
1265
1266inline_size void
1267evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268{
1269 if (!*flag)
1270 {
1271 int old_errno = errno; /* save errno because write might clobber it */
1272 char dummy;
1273
1274 *flag = 1;
1275
1276#if EV_USE_EVENTFD
1277 if (evfd >= 0)
1278 {
1279 uint64_t counter = 1;
1280 write (evfd, &counter, sizeof (uint64_t));
1281 }
1282 else
1283#endif
1284 /* win32 people keep sending patches that change this write() to send() */
1285 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286 /* so when you think this write should be a send instead, please find out */
1287 /* where your send() is from - it's definitely not the microsoft send, and */
1288 /* tell me. thank you. */
1289 write (evpipe [1], &dummy, 1);
1290 2820
1291 errno = old_errno; 2821 errno = old_errno;
1292 } 2822 }
1293} 2823}
1294 2824
… …
1297static void 2827static void
1298pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1299{ 2829{
1300 int i; 2830 int i;
1301 2831
2832 if (revents & EV_READ)
2833 {
1302#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1303 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1304 { 2836 {
1305 uint64_t counter; 2837 uint64_t counter;
1306 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1307 } 2839 }
1308 else 2840 else
1309#endif 2841#endif
1310 { 2842 {
1311 char dummy; 2843 char dummy[4];
1312 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1313 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
1314 } 2855 }
1315 2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
1316 if (sig_pending) 2862 if (sig_pending)
1317 { 2863 {
1318 sig_pending = 0; 2864 sig_pending = 0;
1319 2865
2866 ECB_MEMORY_FENCE;
2867
1320 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1321 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1322 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1323 } 2871 }
2872#endif
1324 2873
1325#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1326 if (async_pending) 2875 if (async_pending)
1327 { 2876 {
1328 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1329 2880
1330 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1331 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1332 { 2883 {
1333 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1334 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1335 } 2887 }
1336 } 2888 }
1337#endif 2889#endif
1338} 2890}
1339 2891
1340/*****************************************************************************/ 2892/*****************************************************************************/
1341 2893
2894void
2895ev_feed_signal (int signum) EV_NOEXCEPT
2896{
2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
2900 EV_A = signals [signum - 1].loop;
2901
2902 if (!EV_A)
2903 return;
2904#endif
2905
2906 signals [signum - 1].pending = 1;
2907 evpipe_write (EV_A_ &sig_pending);
2908}
2909
1342static void 2910static void
1343ev_sighandler (int signum) 2911ev_sighandler (int signum)
1344{ 2912{
1345#if EV_MULTIPLICITY
1346 EV_P = signals [signum - 1].loop;
1347#endif
1348
1349#ifdef _WIN32 2913#ifdef _WIN32
1350 signal (signum, ev_sighandler); 2914 signal (signum, ev_sighandler);
1351#endif 2915#endif
1352 2916
1353 signals [signum - 1].pending = 1; 2917 ev_feed_signal (signum);
1354 evpipe_write (EV_A_ &sig_pending);
1355} 2918}
1356 2919
1357void noinline 2920ecb_noinline
2921void
1358ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1359{ 2923{
1360 WL w; 2924 WL w;
1361 2925
1362 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1363 return; 2927 return;
1364 2928
1365 --signum; 2929 --signum;
1366 2930
1367#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1368 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1369 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1370 2934
1371 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1372 return; 2936 return;
1373#endif 2937#endif
1374 2938
1375 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1376 2941
1377 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1378 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1379} 2944}
1380 2945
… …
1459 3024
1460#endif 3025#endif
1461 3026
1462/*****************************************************************************/ 3027/*****************************************************************************/
1463 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
3078#if EV_USE_IOCP
3079# include "ev_iocp.c"
3080#endif
1464#if EV_USE_PORT 3081#if EV_USE_PORT
1465# include "ev_port.c" 3082# include "ev_port.c"
1466#endif 3083#endif
1467#if EV_USE_KQUEUE 3084#if EV_USE_KQUEUE
1468# include "ev_kqueue.c" 3085# include "ev_kqueue.c"
1469#endif 3086#endif
1470#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
1471# include "ev_epoll.c" 3088# include "ev_epoll.c"
1472#endif 3089#endif
3090#if EV_USE_LINUXAIO
3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
3095#endif
1473#if EV_USE_POLL 3096#if EV_USE_POLL
1474# include "ev_poll.c" 3097# include "ev_poll.c"
1475#endif 3098#endif
1476#if EV_USE_SELECT 3099#if EV_USE_SELECT
1477# include "ev_select.c" 3100# include "ev_select.c"
1478#endif 3101#endif
1479 3102
1480int 3103ecb_cold int
1481ev_version_major (void) 3104ev_version_major (void) EV_NOEXCEPT
1482{ 3105{
1483 return EV_VERSION_MAJOR; 3106 return EV_VERSION_MAJOR;
1484} 3107}
1485 3108
1486int 3109ecb_cold int
1487ev_version_minor (void) 3110ev_version_minor (void) EV_NOEXCEPT
1488{ 3111{
1489 return EV_VERSION_MINOR; 3112 return EV_VERSION_MINOR;
1490} 3113}
1491 3114
1492/* return true if we are running with elevated privileges and should ignore env variables */ 3115/* return true if we are running with elevated privileges and should ignore env variables */
1493int inline_size 3116inline_size ecb_cold int
1494enable_secure (void) 3117enable_secure (void)
1495{ 3118{
1496#ifdef _WIN32 3119#ifdef _WIN32
1497 return 0; 3120 return 0;
1498#else 3121#else
1499 return getuid () != geteuid () 3122 return getuid () != geteuid ()
1500 || getgid () != getegid (); 3123 || getgid () != getegid ();
1501#endif 3124#endif
1502} 3125}
1503 3126
3127ecb_cold
1504unsigned int 3128unsigned int
1505ev_supported_backends (void) 3129ev_supported_backends (void) EV_NOEXCEPT
1506{ 3130{
1507 unsigned int flags = 0; 3131 unsigned int flags = 0;
1508 3132
1509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1511 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1512 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1514 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
1515 return flags; 3141 return flags;
1516} 3142}
1517 3143
3144ecb_cold
1518unsigned int 3145unsigned int
1519ev_recommended_backends (void) 3146ev_recommended_backends (void) EV_NOEXCEPT
1520{ 3147{
1521 unsigned int flags = ev_supported_backends (); 3148 unsigned int flags = ev_supported_backends ();
1522 3149
1523#ifndef __NetBSD__ 3150#ifndef __NetBSD__
1524 /* kqueue is borked on everything but netbsd apparently */ 3151 /* kqueue is borked on everything but netbsd apparently */
… …
1532#endif 3159#endif
1533#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
1534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1535#endif 3162#endif
1536 3163
3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
3172
1537 return flags; 3173 return flags;
1538} 3174}
1539 3175
3176ecb_cold
1540unsigned int 3177unsigned int
1541ev_embeddable_backends (void) 3178ev_embeddable_backends (void) EV_NOEXCEPT
1542{ 3179{
1543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1544 3181
1545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546 /* please fix it and tell me how to detect the fix */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1547 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1548 3187
1549 return flags; 3188 return flags;
1550} 3189}
1551 3190
1552unsigned int 3191unsigned int
1553ev_backend (EV_P) 3192ev_backend (EV_P) EV_NOEXCEPT
1554{ 3193{
1555 return backend; 3194 return backend;
1556} 3195}
1557 3196
1558#if EV_FEATURE_API 3197#if EV_FEATURE_API
1559unsigned int 3198unsigned int
1560ev_iteration (EV_P) 3199ev_iteration (EV_P) EV_NOEXCEPT
1561{ 3200{
1562 return loop_count; 3201 return loop_count;
1563} 3202}
1564 3203
1565unsigned int 3204unsigned int
1566ev_depth (EV_P) 3205ev_depth (EV_P) EV_NOEXCEPT
1567{ 3206{
1568 return loop_depth; 3207 return loop_depth;
1569} 3208}
1570 3209
1571void 3210void
1572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3211ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1573{ 3212{
1574 io_blocktime = interval; 3213 io_blocktime = interval;
1575} 3214}
1576 3215
1577void 3216void
1578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1579{ 3218{
1580 timeout_blocktime = interval; 3219 timeout_blocktime = interval;
1581} 3220}
1582 3221
1583void 3222void
1584ev_set_userdata (EV_P_ void *data) 3223ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1585{ 3224{
1586 userdata = data; 3225 userdata = data;
1587} 3226}
1588 3227
1589void * 3228void *
1590ev_userdata (EV_P) 3229ev_userdata (EV_P) EV_NOEXCEPT
1591{ 3230{
1592 return userdata; 3231 return userdata;
1593} 3232}
1594 3233
3234void
1595void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3235ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1596{ 3236{
1597 invoke_cb = invoke_pending_cb; 3237 invoke_cb = invoke_pending_cb;
1598} 3238}
1599 3239
3240void
1600void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3241ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1601{ 3242{
1602 release_cb = release; 3243 release_cb = release;
1603 acquire_cb = acquire; 3244 acquire_cb = acquire;
1604} 3245}
1605#endif 3246#endif
1606 3247
1607/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
1608static void noinline 3249ecb_noinline ecb_cold
3250static void
1609loop_init (EV_P_ unsigned int flags) 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1610{ 3252{
1611 if (!backend) 3253 if (!backend)
1612 { 3254 {
3255 origflags = flags;
3256
1613#if EV_USE_REALTIME 3257#if EV_USE_REALTIME
1614 if (!have_realtime) 3258 if (!have_realtime)
1615 { 3259 {
1616 struct timespec ts; 3260 struct timespec ts;
1617 3261
… …
1639 if (!(flags & EVFLAG_NOENV) 3283 if (!(flags & EVFLAG_NOENV)
1640 && !enable_secure () 3284 && !enable_secure ()
1641 && getenv ("LIBEV_FLAGS")) 3285 && getenv ("LIBEV_FLAGS"))
1642 flags = atoi (getenv ("LIBEV_FLAGS")); 3286 flags = atoi (getenv ("LIBEV_FLAGS"));
1643 3287
1644 ev_rt_now = ev_time (); 3288 ev_rt_now = ev_time ();
1645 mn_now = get_clock (); 3289 mn_now = get_clock ();
1646 now_floor = mn_now; 3290 now_floor = mn_now;
1647 rtmn_diff = ev_rt_now - mn_now; 3291 rtmn_diff = ev_rt_now - mn_now;
1648#if EV_FEATURE_API 3292#if EV_FEATURE_API
1649 invoke_cb = ev_invoke_pending; 3293 invoke_cb = ev_invoke_pending;
1650#endif 3294#endif
1651 3295
1652 io_blocktime = 0.; 3296 io_blocktime = 0.;
1653 timeout_blocktime = 0.; 3297 timeout_blocktime = 0.;
1654 backend = 0; 3298 backend = 0;
1655 backend_fd = -1; 3299 backend_fd = -1;
1656 sig_pending = 0; 3300 sig_pending = 0;
1657#if EV_ASYNC_ENABLE 3301#if EV_ASYNC_ENABLE
1658 async_pending = 0; 3302 async_pending = 0;
1659#endif 3303#endif
3304 pipe_write_skipped = 0;
3305 pipe_write_wanted = 0;
3306 evpipe [0] = -1;
3307 evpipe [1] = -1;
1660#if EV_USE_INOTIFY 3308#if EV_USE_INOTIFY
1661 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662#endif 3310#endif
1663#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
1664 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
1666 3317
1667 if (!(flags & 0x0000ffffU)) 3318 if (!(flags & EVBACKEND_MASK))
1668 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
1669 3320
3321#if EV_USE_IOCP
3322 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3323#endif
1670#if EV_USE_PORT 3324#if EV_USE_PORT
1671 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672#endif 3326#endif
1673#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
1674 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3332#endif
3333#if EV_USE_LINUXAIO
3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1675#endif 3335#endif
1676#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
1677 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3337 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1678#endif 3338#endif
1679#if EV_USE_POLL 3339#if EV_USE_POLL
1680 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3340 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1681#endif 3341#endif
1682#if EV_USE_SELECT 3342#if EV_USE_SELECT
1683 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1684#endif 3344#endif
1685 3345
1686 ev_prepare_init (&pending_w, pendingcb); 3346 ev_prepare_init (&pending_w, pendingcb);
1687 3347
1688#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3348#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1691#endif 3351#endif
1692 } 3352 }
1693} 3353}
1694 3354
1695/* free up a loop structure */ 3355/* free up a loop structure */
1696static void noinline 3356ecb_cold
3357void
1697loop_destroy (EV_P) 3358ev_loop_destroy (EV_P)
1698{ 3359{
1699 int i; 3360 int i;
3361
3362#if EV_MULTIPLICITY
3363 /* mimic free (0) */
3364 if (!EV_A)
3365 return;
3366#endif
3367
3368#if EV_CLEANUP_ENABLE
3369 /* queue cleanup watchers (and execute them) */
3370 if (ecb_expect_false (cleanupcnt))
3371 {
3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3373 EV_INVOKE_PENDING;
3374 }
3375#endif
3376
3377#if EV_CHILD_ENABLE
3378 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3379 {
3380 ev_ref (EV_A); /* child watcher */
3381 ev_signal_stop (EV_A_ &childev);
3382 }
3383#endif
1700 3384
1701 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
1702 { 3386 {
1703 /*ev_ref (EV_A);*/ 3387 /*ev_ref (EV_A);*/
1704 /*ev_io_stop (EV_A_ &pipe_w);*/ 3388 /*ev_io_stop (EV_A_ &pipe_w);*/
1705 3389
1706#if EV_USE_EVENTFD
1707 if (evfd >= 0)
1708 close (evfd);
1709#endif
1710
1711 if (evpipe [0] >= 0)
1712 {
1713 EV_WIN32_CLOSE_FD (evpipe [0]); 3390 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1714 EV_WIN32_CLOSE_FD (evpipe [1]); 3391 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1715 }
1716 } 3392 }
1717 3393
1718#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
1719 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
1720 close (sigfd); 3396 close (sigfd);
1721#endif 3397#endif
1722 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
1723#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
1724 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
1725 close (fs_fd); 3406 close (fs_fd);
1726#endif 3407#endif
1727 3408
1728 if (backend_fd >= 0) 3409 if (backend_fd >= 0)
1729 close (backend_fd); 3410 close (backend_fd);
1730 3411
3412#if EV_USE_IOCP
3413 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3414#endif
1731#if EV_USE_PORT 3415#if EV_USE_PORT
1732 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733#endif 3417#endif
1734#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
1735 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3423#endif
3424#if EV_USE_LINUXAIO
3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1736#endif 3426#endif
1737#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
1738 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3428 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1739#endif 3429#endif
1740#if EV_USE_POLL 3430#if EV_USE_POLL
1741 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3431 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1742#endif 3432#endif
1743#if EV_USE_SELECT 3433#if EV_USE_SELECT
1744 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3434 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1745#endif 3435#endif
1746 3436
1747 for (i = NUMPRI; i--; ) 3437 for (i = NUMPRI; i--; )
1748 { 3438 {
1749 array_free (pending, [i]); 3439 array_free (pending, [i]);
… …
1762 array_free (periodic, EMPTY); 3452 array_free (periodic, EMPTY);
1763#endif 3453#endif
1764#if EV_FORK_ENABLE 3454#if EV_FORK_ENABLE
1765 array_free (fork, EMPTY); 3455 array_free (fork, EMPTY);
1766#endif 3456#endif
3457#if EV_CLEANUP_ENABLE
3458 array_free (cleanup, EMPTY);
3459#endif
1767 array_free (prepare, EMPTY); 3460 array_free (prepare, EMPTY);
1768 array_free (check, EMPTY); 3461 array_free (check, EMPTY);
1769#if EV_ASYNC_ENABLE 3462#if EV_ASYNC_ENABLE
1770 array_free (async, EMPTY); 3463 array_free (async, EMPTY);
1771#endif 3464#endif
1772 3465
1773 backend = 0; 3466 backend = 0;
3467
3468#if EV_MULTIPLICITY
3469 if (ev_is_default_loop (EV_A))
3470#endif
3471 ev_default_loop_ptr = 0;
3472#if EV_MULTIPLICITY
3473 else
3474 ev_free (EV_A);
3475#endif
1774} 3476}
1775 3477
1776#if EV_USE_INOTIFY 3478#if EV_USE_INOTIFY
1777inline_size void infy_fork (EV_P); 3479inline_size void infy_fork (EV_P);
1778#endif 3480#endif
1779 3481
1780inline_size void 3482inline_size void
1781loop_fork (EV_P) 3483loop_fork (EV_P)
1782{ 3484{
1783#if EV_USE_PORT 3485#if EV_USE_PORT
1784 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1785#endif 3487#endif
1786#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
1787 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3494#if EV_USE_LINUXAIO
3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1788#endif 3496#endif
1789#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
1790 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1791#endif 3499#endif
1792#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
1793 infy_fork (EV_A); 3501 infy_fork (EV_A);
1794#endif 3502#endif
1795 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1796 if (ev_is_active (&pipe_w)) 3526 if (ev_is_active (&pipe_w))
1797 { 3527 {
1798 /* this "locks" the handlers against writing to the pipe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799 /* while we modify the fd vars */ 3529
1800 sig_pending = 1;
1801#if EV_ASYNC_ENABLE
1802 async_pending = 1;
1803#endif
1804
1805 ev_ref (EV_A); 3530 ev_ref (EV_A);
1806 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
1807 3532
1808#if EV_USE_EVENTFD
1809 if (evfd >= 0)
1810 close (evfd);
1811#endif
1812
1813 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
1814 {
1815 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
1816 EV_WIN32_CLOSE_FD (evpipe [1]); 3535
3536 evpipe_init (EV_A);
3537 /* iterate over everything, in case we missed something before */
3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1817 } 3539 }
1818 3540 #endif
1819#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1820 evpipe_init (EV_A);
1821 /* now iterate over everything, in case we missed something */
1822 pipecb (EV_A_ &pipe_w, EV_READ);
1823#endif
1824 } 3541 }
1825 3542
1826 postfork = 0; 3543 postfork = 0;
1827} 3544}
1828 3545
1829#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
1830 3547
3548ecb_cold
1831struct ev_loop * 3549struct ev_loop *
1832ev_loop_new (unsigned int flags) 3550ev_loop_new (unsigned int flags) EV_NOEXCEPT
1833{ 3551{
1834 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3552 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835 3553
1836 memset (EV_A, 0, sizeof (struct ev_loop)); 3554 memset (EV_A, 0, sizeof (struct ev_loop));
1837 loop_init (EV_A_ flags); 3555 loop_init (EV_A_ flags);
1838 3556
1839 if (ev_backend (EV_A)) 3557 if (ev_backend (EV_A))
1840 return EV_A; 3558 return EV_A;
1841 3559
3560 ev_free (EV_A);
1842 return 0; 3561 return 0;
1843} 3562}
1844 3563
1845void
1846ev_loop_destroy (EV_P)
1847{
1848 loop_destroy (EV_A);
1849 ev_free (loop);
1850}
1851
1852void
1853ev_loop_fork (EV_P)
1854{
1855 postfork = 1; /* must be in line with ev_default_fork */
1856}
1857#endif /* multiplicity */ 3564#endif /* multiplicity */
1858 3565
1859#if EV_VERIFY 3566#if EV_VERIFY
1860static void noinline 3567ecb_noinline ecb_cold
3568static void
1861verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
1862{ 3570{
1863 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864 3572
1865 if (w->pending) 3573 if (w->pending)
1866 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867} 3575}
1868 3576
1869static void noinline 3577ecb_noinline ecb_cold
3578static void
1870verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
1871{ 3580{
1872 int i; 3581 int i;
1873 3582
1874 for (i = HEAP0; i < N + HEAP0; ++i) 3583 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1879 3588
1880 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881 } 3590 }
1882} 3591}
1883 3592
1884static void noinline 3593ecb_noinline ecb_cold
3594static void
1885array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
1886{ 3596{
1887 while (cnt--) 3597 while (cnt--)
1888 { 3598 {
1889 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3599 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1891 } 3601 }
1892} 3602}
1893#endif 3603#endif
1894 3604
1895#if EV_FEATURE_API 3605#if EV_FEATURE_API
1896void 3606void ecb_cold
1897ev_verify (EV_P) 3607ev_verify (EV_P) EV_NOEXCEPT
1898{ 3608{
1899#if EV_VERIFY 3609#if EV_VERIFY
1900 int i; 3610 int i;
1901 WL w; 3611 WL w, w2;
1902 3612
1903 assert (activecnt >= -1); 3613 assert (activecnt >= -1);
1904 3614
1905 assert (fdchangemax >= fdchangecnt); 3615 assert (fdchangemax >= fdchangecnt);
1906 for (i = 0; i < fdchangecnt; ++i) 3616 for (i = 0; i < fdchangecnt; ++i)
1907 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3617 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1908 3618
1909 assert (anfdmax >= 0); 3619 assert (anfdmax >= 0);
1910 for (i = 0; i < anfdmax; ++i) 3620 for (i = 0; i < anfdmax; ++i)
3621 {
3622 int j = 0;
3623
1911 for (w = anfds [i].head; w; w = w->next) 3624 for (w = w2 = anfds [i].head; w; w = w->next)
1912 { 3625 {
1913 verify_watcher (EV_A_ (W)w); 3626 verify_watcher (EV_A_ (W)w);
3627
3628 if (j++ & 1)
3629 {
3630 assert (("libev: io watcher list contains a loop", w != w2));
3631 w2 = w2->next;
3632 }
3633
1914 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3634 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1915 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3635 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1916 } 3636 }
3637 }
1917 3638
1918 assert (timermax >= timercnt); 3639 assert (timermax >= timercnt);
1919 verify_heap (EV_A_ timers, timercnt); 3640 verify_heap (EV_A_ timers, timercnt);
1920 3641
1921#if EV_PERIODIC_ENABLE 3642#if EV_PERIODIC_ENABLE
… …
1936#if EV_FORK_ENABLE 3657#if EV_FORK_ENABLE
1937 assert (forkmax >= forkcnt); 3658 assert (forkmax >= forkcnt);
1938 array_verify (EV_A_ (W *)forks, forkcnt); 3659 array_verify (EV_A_ (W *)forks, forkcnt);
1939#endif 3660#endif
1940 3661
3662#if EV_CLEANUP_ENABLE
3663 assert (cleanupmax >= cleanupcnt);
3664 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3665#endif
3666
1941#if EV_ASYNC_ENABLE 3667#if EV_ASYNC_ENABLE
1942 assert (asyncmax >= asynccnt); 3668 assert (asyncmax >= asynccnt);
1943 array_verify (EV_A_ (W *)asyncs, asynccnt); 3669 array_verify (EV_A_ (W *)asyncs, asynccnt);
1944#endif 3670#endif
1945 3671
… …
1962#endif 3688#endif
1963} 3689}
1964#endif 3690#endif
1965 3691
1966#if EV_MULTIPLICITY 3692#if EV_MULTIPLICITY
3693ecb_cold
1967struct ev_loop * 3694struct ev_loop *
1968ev_default_loop_init (unsigned int flags)
1969#else 3695#else
1970int 3696int
3697#endif
1971ev_default_loop (unsigned int flags) 3698ev_default_loop (unsigned int flags) EV_NOEXCEPT
1972#endif
1973{ 3699{
1974 if (!ev_default_loop_ptr) 3700 if (!ev_default_loop_ptr)
1975 { 3701 {
1976#if EV_MULTIPLICITY 3702#if EV_MULTIPLICITY
1977 EV_P = ev_default_loop_ptr = &default_loop_struct; 3703 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1996 3722
1997 return ev_default_loop_ptr; 3723 return ev_default_loop_ptr;
1998} 3724}
1999 3725
2000void 3726void
2001ev_default_destroy (void) 3727ev_loop_fork (EV_P) EV_NOEXCEPT
2002{ 3728{
2003#if EV_MULTIPLICITY 3729 postfork = 1;
2004 EV_P = ev_default_loop_ptr;
2005#endif
2006
2007 ev_default_loop_ptr = 0;
2008
2009#if EV_CHILD_ENABLE
2010 ev_ref (EV_A); /* child watcher */
2011 ev_signal_stop (EV_A_ &childev);
2012#endif
2013
2014 loop_destroy (EV_A);
2015}
2016
2017void
2018ev_default_fork (void)
2019{
2020#if EV_MULTIPLICITY
2021 EV_P = ev_default_loop_ptr;
2022#endif
2023
2024 postfork = 1; /* must be in line with ev_loop_fork */
2025} 3730}
2026 3731
2027/*****************************************************************************/ 3732/*****************************************************************************/
2028 3733
2029void 3734void
… …
2031{ 3736{
2032 EV_CB_INVOKE ((W)w, revents); 3737 EV_CB_INVOKE ((W)w, revents);
2033} 3738}
2034 3739
2035unsigned int 3740unsigned int
2036ev_pending_count (EV_P) 3741ev_pending_count (EV_P) EV_NOEXCEPT
2037{ 3742{
2038 int pri; 3743 int pri;
2039 unsigned int count = 0; 3744 unsigned int count = 0;
2040 3745
2041 for (pri = NUMPRI; pri--; ) 3746 for (pri = NUMPRI; pri--; )
2042 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
2043 3748
2044 return count; 3749 return count;
2045} 3750}
2046 3751
2047void noinline 3752ecb_noinline
3753void
2048ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
2049{ 3755{
2050 int pri; 3756 pendingpri = NUMPRI;
2051 3757
2052 for (pri = NUMPRI; pri--; ) 3758 do
3759 {
3760 --pendingpri;
3761
3762 /* pendingpri possibly gets modified in the inner loop */
2053 while (pendingcnt [pri]) 3763 while (pendingcnt [pendingpri])
2054 { 3764 {
2055 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3765 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2056 3766
2057 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058 /* ^ this is no longer true, as pending_w could be here */
2059
2060 p->w->pending = 0; 3767 p->w->pending = 0;
2061 EV_CB_INVOKE (p->w, p->events); 3768 EV_CB_INVOKE (p->w, p->events);
2062 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2063 } 3770 }
3771 }
3772 while (pendingpri);
2064} 3773}
2065 3774
2066#if EV_IDLE_ENABLE 3775#if EV_IDLE_ENABLE
2067/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
2068/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
2069inline_size void 3778inline_size void
2070idle_reify (EV_P) 3779idle_reify (EV_P)
2071{ 3780{
2072 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
2073 { 3782 {
2074 int pri; 3783 int pri;
2075 3784
2076 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
2077 { 3786 {
… …
2107 { 3816 {
2108 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
2109 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
2110 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
2111 3820
2112 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2113 3822
2114 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
2115 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
2116 } 3825 }
2117 else 3826 else
… …
2125 feed_reverse_done (EV_A_ EV_TIMER); 3834 feed_reverse_done (EV_A_ EV_TIMER);
2126 } 3835 }
2127} 3836}
2128 3837
2129#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
3839
3840ecb_noinline
3841static void
3842periodic_recalc (EV_P_ ev_periodic *w)
3843{
3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3846
3847 /* the above almost always errs on the low side */
3848 while (at <= ev_rt_now)
3849 {
3850 ev_tstamp nat = at + w->interval;
3851
3852 /* when resolution fails us, we use ev_rt_now */
3853 if (ecb_expect_false (nat == at))
3854 {
3855 at = ev_rt_now;
3856 break;
3857 }
3858
3859 at = nat;
3860 }
3861
3862 ev_at (w) = at;
3863}
3864
2130/* make periodics pending */ 3865/* make periodics pending */
2131inline_size void 3866inline_size void
2132periodics_reify (EV_P) 3867periodics_reify (EV_P)
2133{ 3868{
2134 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2135 3870
2136 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3871 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2137 { 3872 {
2138 int feed_count = 0;
2139
2140 do 3873 do
2141 { 3874 {
2142 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3875 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2143 3876
2144 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3877 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2153 ANHE_at_cache (periodics [HEAP0]); 3886 ANHE_at_cache (periodics [HEAP0]);
2154 downheap (periodics, periodiccnt, HEAP0); 3887 downheap (periodics, periodiccnt, HEAP0);
2155 } 3888 }
2156 else if (w->interval) 3889 else if (w->interval)
2157 { 3890 {
2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3891 periodic_recalc (EV_A_ w);
2159 /* if next trigger time is not sufficiently in the future, put it there */
2160 /* this might happen because of floating point inexactness */
2161 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162 {
2163 ev_at (w) += w->interval;
2164
2165 /* if interval is unreasonably low we might still have a time in the past */
2166 /* so correct this. this will make the periodic very inexact, but the user */
2167 /* has effectively asked to get triggered more often than possible */
2168 if (ev_at (w) < ev_rt_now)
2169 ev_at (w) = ev_rt_now;
2170 }
2171
2172 ANHE_at_cache (periodics [HEAP0]); 3892 ANHE_at_cache (periodics [HEAP0]);
2173 downheap (periodics, periodiccnt, HEAP0); 3893 downheap (periodics, periodiccnt, HEAP0);
2174 } 3894 }
2175 else 3895 else
2176 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3896 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2184 } 3904 }
2185} 3905}
2186 3906
2187/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
2188/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189static void noinline 3909ecb_noinline ecb_cold
3910static void
2190periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
2191{ 3912{
2192 int i; 3913 int i;
2193 3914
2194 /* adjust periodics after time jump */ 3915 /* adjust periodics after time jump */
… …
2197 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3918 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198 3919
2199 if (w->reschedule_cb) 3920 if (w->reschedule_cb)
2200 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3921 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201 else if (w->interval) 3922 else if (w->interval)
2202 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3923 periodic_recalc (EV_A_ w);
2203 3924
2204 ANHE_at_cache (periodics [i]); 3925 ANHE_at_cache (periodics [i]);
2205 } 3926 }
2206 3927
2207 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
2208} 3929}
2209#endif 3930#endif
2210 3931
2211/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
2212static void noinline 3933ecb_noinline ecb_cold
3934static void
2213timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
2214{ 3936{
2215 int i; 3937 int i;
2216 3938
2217 for (i = 0; i < timercnt; ++i) 3939 for (i = 0; i < timercnt; ++i)
… …
2226/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
2227inline_speed void 3949inline_speed void
2228time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
2229{ 3951{
2230#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
2231 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
2232 { 3954 {
2233 int i; 3955 int i;
2234 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
2235 3957
2236 mn_now = get_clock (); 3958 mn_now = get_clock ();
2237 3959
2238 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2239 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
2240 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2241 { 3963 {
2242 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
2243 return; 3965 return;
2244 } 3966 }
2245 3967
… …
2254 * doesn't hurt either as we only do this on time-jumps or 3976 * doesn't hurt either as we only do this on time-jumps or
2255 * in the unlikely event of having been preempted here. 3977 * in the unlikely event of having been preempted here.
2256 */ 3978 */
2257 for (i = 4; --i; ) 3979 for (i = 4; --i; )
2258 { 3980 {
3981 ev_tstamp diff;
2259 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
2260 3983
2261 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3984 diff = odiff - rtmn_diff;
3985
3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2262 return; /* all is well */ 3987 return; /* all is well */
2263 3988
2264 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
2265 mn_now = get_clock (); 3990 mn_now = get_clock ();
2266 now_floor = mn_now; 3991 now_floor = mn_now;
… …
2275 else 4000 else
2276#endif 4001#endif
2277 { 4002 {
2278 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
2279 4004
2280 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2281 { 4006 {
2282 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
2283 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2284#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
2285 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
2288 4013
2289 mn_now = ev_rt_now; 4014 mn_now = ev_rt_now;
2290 } 4015 }
2291} 4016}
2292 4017
2293void 4018int
2294ev_loop (EV_P_ int flags) 4019ev_run (EV_P_ int flags)
2295{ 4020{
2296#if EV_FEATURE_API 4021#if EV_FEATURE_API
2297 ++loop_depth; 4022 ++loop_depth;
2298#endif 4023#endif
2299 4024
2300 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 4025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301 4026
2302 loop_done = EVUNLOOP_CANCEL; 4027 loop_done = EVBREAK_CANCEL;
2303 4028
2304 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 4029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305 4030
2306 do 4031 do
2307 { 4032 {
2308#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
2309 ev_verify (EV_A); 4034 ev_verify (EV_A);
2310#endif 4035#endif
2311 4036
2312#ifndef _WIN32 4037#ifndef _WIN32
2313 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2314 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
2315 { 4040 {
2316 curpid = getpid (); 4041 curpid = getpid ();
2317 postfork = 1; 4042 postfork = 1;
2318 } 4043 }
2319#endif 4044#endif
2320 4045
2321#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
2322 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
2323 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
2324 if (forkcnt) 4049 if (forkcnt)
2325 { 4050 {
2326 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2327 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
2328 } 4053 }
2329#endif 4054#endif
2330 4055
2331#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
2332 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
2333 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
2334 { 4059 {
2335 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2336 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
2337 } 4062 }
2338#endif 4063#endif
2339 4064
2340 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
2341 break; 4066 break;
2342 4067
2343 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
2344 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
2345 loop_fork (EV_A); 4070 loop_fork (EV_A);
2346 4071
2347 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
2348 fd_reify (EV_A); 4073 fd_reify (EV_A);
2349 4074
2350 /* calculate blocking time */ 4075 /* calculate blocking time */
2351 { 4076 {
2352 ev_tstamp waittime = 0.; 4077 ev_tstamp waittime = 0.;
2353 ev_tstamp sleeptime = 0.; 4078 ev_tstamp sleeptime = 0.;
2354 4079
4080 /* remember old timestamp for io_blocktime calculation */
4081 ev_tstamp prev_mn_now = mn_now;
4082
4083 /* update time to cancel out callback processing overhead */
4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
4085
4086 /* from now on, we want a pipe-wake-up */
4087 pipe_write_wanted = 1;
4088
4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4090
2355 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356 { 4092 {
2357 /* remember old timestamp for io_blocktime calculation */
2358 ev_tstamp prev_mn_now = mn_now;
2359
2360 /* update time to cancel out callback processing overhead */
2361 time_update (EV_A_ 1e100);
2362
2363 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
2364 4100
2365 if (timercnt) 4101 if (timercnt)
2366 { 4102 {
2367 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
2369 } 4105 }
2370 4106
2371#if EV_PERIODIC_ENABLE 4107#if EV_PERIODIC_ENABLE
2372 if (periodiccnt) 4108 if (periodiccnt)
2373 { 4109 {
2374 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4110 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
2376 } 4112 }
2377#endif 4113#endif
2378 4114
2379 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
2380 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
2381 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
2382 4118
4119 /* now there are two more special cases left, either we have
4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
4127 : backend_mintime;
4128
2383 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
2384 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
2385 { 4131 {
2386 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387 4133
2388 if (sleeptime > waittime - backend_fudge) 4134 if (sleeptime > waittime - backend_mintime)
2389 sleeptime = waittime - backend_fudge; 4135 sleeptime = waittime - backend_mintime;
2390 4136
2391 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2392 { 4138 {
2393 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
2394 waittime -= sleeptime; 4140 waittime -= sleeptime;
2395 } 4141 }
2396 } 4142 }
2397 } 4143 }
2398 4144
2399#if EV_FEATURE_API 4145#if EV_FEATURE_API
2400 ++loop_count; 4146 ++loop_count;
2401#endif 4147#endif
2402 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4148 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403 backend_poll (EV_A_ waittime); 4149 backend_poll (EV_A_ waittime);
2404 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4150 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4151
4152 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4153
4154 ECB_MEMORY_FENCE_ACQUIRE;
4155 if (pipe_write_skipped)
4156 {
4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4159 }
2405 4160
2406 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
2407 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
2408 } 4163 }
2409 4164
… …
2418 idle_reify (EV_A); 4173 idle_reify (EV_A);
2419#endif 4174#endif
2420 4175
2421#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
2422 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
2423 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
2424 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2425#endif 4180#endif
2426 4181
2427 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
2428 } 4183 }
2429 while (expect_true ( 4184 while (ecb_expect_true (
2430 activecnt 4185 activecnt
2431 && !loop_done 4186 && !loop_done
2432 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433 )); 4188 ));
2434 4189
2435 if (loop_done == EVUNLOOP_ONE) 4190 if (loop_done == EVBREAK_ONE)
2436 loop_done = EVUNLOOP_CANCEL; 4191 loop_done = EVBREAK_CANCEL;
2437 4192
2438#if EV_FEATURE_API 4193#if EV_FEATURE_API
2439 --loop_depth; 4194 --loop_depth;
2440#endif 4195#endif
4196
4197 return activecnt;
2441} 4198}
2442 4199
2443void 4200void
2444ev_unloop (EV_P_ int how) 4201ev_break (EV_P_ int how) EV_NOEXCEPT
2445{ 4202{
2446 loop_done = how; 4203 loop_done = how;
2447} 4204}
2448 4205
2449void 4206void
2450ev_ref (EV_P) 4207ev_ref (EV_P) EV_NOEXCEPT
2451{ 4208{
2452 ++activecnt; 4209 ++activecnt;
2453} 4210}
2454 4211
2455void 4212void
2456ev_unref (EV_P) 4213ev_unref (EV_P) EV_NOEXCEPT
2457{ 4214{
2458 --activecnt; 4215 --activecnt;
2459} 4216}
2460 4217
2461void 4218void
2462ev_now_update (EV_P) 4219ev_now_update (EV_P) EV_NOEXCEPT
2463{ 4220{
2464 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
2465} 4222}
2466 4223
2467void 4224void
2468ev_suspend (EV_P) 4225ev_suspend (EV_P) EV_NOEXCEPT
2469{ 4226{
2470 ev_now_update (EV_A); 4227 ev_now_update (EV_A);
2471} 4228}
2472 4229
2473void 4230void
2474ev_resume (EV_P) 4231ev_resume (EV_P) EV_NOEXCEPT
2475{ 4232{
2476 ev_tstamp mn_prev = mn_now; 4233 ev_tstamp mn_prev = mn_now;
2477 4234
2478 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
2479 timers_reschedule (EV_A_ mn_now - mn_prev); 4236 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2496inline_size void 4253inline_size void
2497wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
2498{ 4255{
2499 while (*head) 4256 while (*head)
2500 { 4257 {
2501 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
2502 { 4259 {
2503 *head = elem->next; 4260 *head = elem->next;
2504 break; 4261 break;
2505 } 4262 }
2506 4263
… …
2518 w->pending = 0; 4275 w->pending = 0;
2519 } 4276 }
2520} 4277}
2521 4278
2522int 4279int
2523ev_clear_pending (EV_P_ void *w) 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2524{ 4281{
2525 W w_ = (W)w; 4282 W w_ = (W)w;
2526 int pending = w_->pending; 4283 int pending = w_->pending;
2527 4284
2528 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
2529 { 4286 {
2530 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2531 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
2532 w_->pending = 0; 4289 w_->pending = 0;
2533 return p->events; 4290 return p->events;
… …
2560 w->active = 0; 4317 w->active = 0;
2561} 4318}
2562 4319
2563/*****************************************************************************/ 4320/*****************************************************************************/
2564 4321
2565void noinline 4322ecb_noinline
4323void
2566ev_io_start (EV_P_ ev_io *w) 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2567{ 4325{
2568 int fd = w->fd; 4326 int fd = w->fd;
2569 4327
2570 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
2571 return; 4329 return;
2572 4330
2573 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2574 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2575 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
2576 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
2577 4338
2578 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
2579 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2580 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
4342
4343 /* common bug, apparently */
4344 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2581 4345
2582 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4346 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2583 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
2584 4348
2585 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
2586} 4350}
2587 4351
2588void noinline 4352ecb_noinline
4353void
2589ev_io_stop (EV_P_ ev_io *w) 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2590{ 4355{
2591 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
2592 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
2593 return; 4358 return;
2594 4359
2595 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2596 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
2597 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
2598 4366
2599 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
2600 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
2601 4369
2602 fd_change (EV_A_ w->fd, 1); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603 4371
2604 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2605} 4373}
2606 4374
2607void noinline 4375ecb_noinline
4376void
2608ev_timer_start (EV_P_ ev_timer *w) 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2609{ 4378{
2610 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
2611 return; 4380 return;
2612 4381
2613 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
2614 4383
2615 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2616 4385
2617 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
2618 4387
2619 ++timercnt; 4388 ++timercnt;
2620 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4389 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2621 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4390 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2622 ANHE_w (timers [ev_active (w)]) = (WT)w; 4391 ANHE_w (timers [ev_active (w)]) = (WT)w;
2623 ANHE_at_cache (timers [ev_active (w)]); 4392 ANHE_at_cache (timers [ev_active (w)]);
2624 upheap (timers, ev_active (w)); 4393 upheap (timers, ev_active (w));
2625 4394
2626 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
2627 4396
2628 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2629} 4398}
2630 4399
2631void noinline 4400ecb_noinline
4401void
2632ev_timer_stop (EV_P_ ev_timer *w) 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2633{ 4403{
2634 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
2635 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
2636 return; 4406 return;
2637 4407
2638 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
2639 4409
2640 { 4410 {
… …
2642 4412
2643 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2644 4414
2645 --timercnt; 4415 --timercnt;
2646 4416
2647 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
2648 { 4418 {
2649 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
2650 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
2651 } 4421 }
2652 } 4422 }
… …
2656 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
2657 4427
2658 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
2659} 4429}
2660 4430
2661void noinline 4431ecb_noinline
4432void
2662ev_timer_again (EV_P_ ev_timer *w) 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2663{ 4434{
2664 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
4436
4437 clear_pending (EV_A_ (W)w);
2665 4438
2666 if (ev_is_active (w)) 4439 if (ev_is_active (w))
2667 { 4440 {
2668 if (w->repeat) 4441 if (w->repeat)
2669 { 4442 {
… …
2682 4455
2683 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
2684} 4457}
2685 4458
2686ev_tstamp 4459ev_tstamp
2687ev_timer_remaining (EV_P_ ev_timer *w) 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2688{ 4461{
2689 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2690} 4463}
2691 4464
2692#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
2693void noinline 4466ecb_noinline
4467void
2694ev_periodic_start (EV_P_ ev_periodic *w) 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2695{ 4469{
2696 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
2697 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
2698 4477
2699 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
2700 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701 else if (w->interval) 4480 else if (w->interval)
2702 { 4481 {
2703 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4482 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704 /* this formula differs from the one in periodic_reify because we do not always round up */ 4483 periodic_recalc (EV_A_ w);
2705 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706 } 4484 }
2707 else 4485 else
2708 ev_at (w) = w->offset; 4486 ev_at (w) = w->offset;
2709 4487
2710 EV_FREQUENT_CHECK; 4488 EV_FREQUENT_CHECK;
2711 4489
2712 ++periodiccnt; 4490 ++periodiccnt;
2713 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4491 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2714 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4492 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2715 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4493 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2716 ANHE_at_cache (periodics [ev_active (w)]); 4494 ANHE_at_cache (periodics [ev_active (w)]);
2717 upheap (periodics, ev_active (w)); 4495 upheap (periodics, ev_active (w));
2718 4496
2719 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
2720 4498
2721 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2722} 4500}
2723 4501
2724void noinline 4502ecb_noinline
4503void
2725ev_periodic_stop (EV_P_ ev_periodic *w) 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2726{ 4505{
2727 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
2729 return; 4508 return;
2730 4509
2731 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
2732 4511
2733 { 4512 {
… …
2735 4514
2736 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2737 4516
2738 --periodiccnt; 4517 --periodiccnt;
2739 4518
2740 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
2741 { 4520 {
2742 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
2743 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
2744 } 4523 }
2745 } 4524 }
… …
2747 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
2748 4527
2749 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
2750} 4529}
2751 4530
2752void noinline 4531ecb_noinline
4532void
2753ev_periodic_again (EV_P_ ev_periodic *w) 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2754{ 4534{
2755 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
2756 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
2757 ev_periodic_start (EV_A_ w); 4537 ev_periodic_start (EV_A_ w);
2758} 4538}
… …
2762# define SA_RESTART 0 4542# define SA_RESTART 0
2763#endif 4543#endif
2764 4544
2765#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
2766 4546
2767void noinline 4547ecb_noinline
4548void
2768ev_signal_start (EV_P_ ev_signal *w) 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2769{ 4550{
2770 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
2771 return; 4552 return;
2772 4553
2773 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2774 4555
2775#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
2776 assert (("libev: a signal must not be attached to two different loops", 4557 assert (("libev: a signal must not be attached to two different loops",
2777 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4558 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2778 4559
2779 signals [w->signum - 1].loop = EV_A; 4560 signals [w->signum - 1].loop = EV_A;
4561 ECB_MEMORY_FENCE_RELEASE;
2780#endif 4562#endif
2781 4563
2782 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
2783 4565
2784#if EV_USE_SIGNALFD 4566#if EV_USE_SIGNALFD
… …
2831 sa.sa_handler = ev_sighandler; 4613 sa.sa_handler = ev_sighandler;
2832 sigfillset (&sa.sa_mask); 4614 sigfillset (&sa.sa_mask);
2833 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4615 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834 sigaction (w->signum, &sa, 0); 4616 sigaction (w->signum, &sa, 0);
2835 4617
4618 if (origflags & EVFLAG_NOSIGMASK)
4619 {
2836 sigemptyset (&sa.sa_mask); 4620 sigemptyset (&sa.sa_mask);
2837 sigaddset (&sa.sa_mask, w->signum); 4621 sigaddset (&sa.sa_mask, w->signum);
2838 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4622 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4623 }
2839#endif 4624#endif
2840 } 4625 }
2841 4626
2842 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
2843} 4628}
2844 4629
2845void noinline 4630ecb_noinline
4631void
2846ev_signal_stop (EV_P_ ev_signal *w) 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2847{ 4633{
2848 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
2849 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
2850 return; 4636 return;
2851 4637
2852 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
2853 4639
2854 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2882#endif 4668#endif
2883 4669
2884#if EV_CHILD_ENABLE 4670#if EV_CHILD_ENABLE
2885 4671
2886void 4672void
2887ev_child_start (EV_P_ ev_child *w) 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2888{ 4674{
2889#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
2890 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2891#endif 4677#endif
2892 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
2893 return; 4679 return;
2894 4680
2895 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
2896 4682
2897 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
2899 4685
2900 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
2901} 4687}
2902 4688
2903void 4689void
2904ev_child_stop (EV_P_ ev_child *w) 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2905{ 4691{
2906 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
2908 return; 4694 return;
2909 4695
2910 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
2911 4697
2912 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2926 4712
2927#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
2928#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2929#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
2930 4716
2931static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2932 4718
2933#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
2934 4720
2935/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2936# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2937 4723
2938static void noinline 4724ecb_noinline
4725static void
2939infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
2940{ 4727{
2941 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); 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4730 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4731 | IN_DONT_FOLLOW | IN_MASK_ADD);
2942 4732
2943 if (w->wd >= 0) 4733 if (w->wd >= 0)
2944 { 4734 {
2945 struct statfs sfs; 4735 struct statfs sfs;
2946 4736
… …
2950 4740
2951 if (!fs_2625) 4741 if (!fs_2625)
2952 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4742 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2953 else if (!statfs (w->path, &sfs) 4743 else if (!statfs (w->path, &sfs)
2954 && (sfs.f_type == 0x1373 /* devfs */ 4744 && (sfs.f_type == 0x1373 /* devfs */
4745 || sfs.f_type == 0x4006 /* fat */
4746 || sfs.f_type == 0x4d44 /* msdos */
2955 || sfs.f_type == 0xEF53 /* ext2/3 */ 4747 || sfs.f_type == 0xEF53 /* ext2/3 */
4748 || sfs.f_type == 0x72b6 /* jffs2 */
4749 || sfs.f_type == 0x858458f6 /* ramfs */
4750 || sfs.f_type == 0x5346544e /* ntfs */
2956 || sfs.f_type == 0x3153464a /* jfs */ 4751 || sfs.f_type == 0x3153464a /* jfs */
4752 || sfs.f_type == 0x9123683e /* btrfs */
2957 || sfs.f_type == 0x52654973 /* reiser3 */ 4753 || sfs.f_type == 0x52654973 /* reiser3 */
2958 || sfs.f_type == 0x01021994 /* tempfs */ 4754 || sfs.f_type == 0x01021994 /* tmpfs */
2959 || sfs.f_type == 0x58465342 /* xfs */)) 4755 || sfs.f_type == 0x58465342 /* xfs */))
2960 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4756 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2961 else 4757 else
2962 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4758 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2963 } 4759 }
… …
2984 if (!pend || pend == path) 4780 if (!pend || pend == path)
2985 break; 4781 break;
2986 4782
2987 *pend = 0; 4783 *pend = 0;
2988 w->wd = inotify_add_watch (fs_fd, path, mask); 4784 w->wd = inotify_add_watch (fs_fd, path, mask);
2989 } 4785 }
2990 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4786 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991 } 4787 }
2992 } 4788 }
2993 4789
2994 if (w->wd >= 0) 4790 if (w->wd >= 0)
… …
2998 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2999 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
3000 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3001} 4797}
3002 4798
3003static void noinline 4799ecb_noinline
4800static void
3004infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
3005{ 4802{
3006 int slot; 4803 int slot;
3007 int wd = w->wd; 4804 int wd = w->wd;
3008 4805
… …
3015 4812
3016 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
3017 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
3018} 4815}
3019 4816
3020static void noinline 4817ecb_noinline
4818static void
3021infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3022{ 4820{
3023 if (slot < 0) 4821 if (slot < 0)
3024 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
3025 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4823 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3061 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4859 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062 ofs += sizeof (struct inotify_event) + ev->len; 4860 ofs += sizeof (struct inotify_event) + ev->len;
3063 } 4861 }
3064} 4862}
3065 4863
3066inline_size unsigned int
3067ev_linux_version (void)
3068{
3069 struct utsname buf;
3070 unsigned int v;
3071 int i;
3072 char *p = buf.release;
3073
3074 if (uname (&buf))
3075 return 0;
3076
3077 for (i = 3+1; --i; )
3078 {
3079 unsigned int c = 0;
3080
3081 for (;;)
3082 {
3083 if (*p >= '0' && *p <= '9')
3084 c = c * 10 + *p++ - '0';
3085 else
3086 {
3087 p += *p == '.';
3088 break;
3089 }
3090 }
3091
3092 v = (v << 8) | c;
3093 }
3094
3095 return v;
3096}
3097
3098inline_size void 4864inline_size ecb_cold
4865void
3099ev_check_2625 (EV_P) 4866ev_check_2625 (EV_P)
3100{ 4867{
3101 /* kernels < 2.6.25 are borked 4868 /* kernels < 2.6.25 are borked
3102 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4869 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103 */ 4870 */
… …
3108} 4875}
3109 4876
3110inline_size int 4877inline_size int
3111infy_newfd (void) 4878infy_newfd (void)
3112{ 4879{
3113#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4880#if defined IN_CLOEXEC && defined IN_NONBLOCK
3114 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4881 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3115 if (fd >= 0) 4882 if (fd >= 0)
3116 return fd; 4883 return fd;
3117#endif 4884#endif
3118 return inotify_init (); 4885 return inotify_init ();
… …
3193#else 4960#else
3194# define EV_LSTAT(p,b) lstat (p, b) 4961# define EV_LSTAT(p,b) lstat (p, b)
3195#endif 4962#endif
3196 4963
3197void 4964void
3198ev_stat_stat (EV_P_ ev_stat *w) 4965ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3199{ 4966{
3200 if (lstat (w->path, &w->attr) < 0) 4967 if (lstat (w->path, &w->attr) < 0)
3201 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
3202 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
3203 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
3204} 4971}
3205 4972
3206static void noinline 4973ecb_noinline
4974static void
3207stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3208{ 4976{
3209 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3210 4978
3211 ev_statdata prev = w->attr; 4979 ev_statdata prev = w->attr;
… …
3242 ev_feed_event (EV_A_ w, EV_STAT); 5010 ev_feed_event (EV_A_ w, EV_STAT);
3243 } 5011 }
3244} 5012}
3245 5013
3246void 5014void
3247ev_stat_start (EV_P_ ev_stat *w) 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3248{ 5016{
3249 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
3250 return; 5018 return;
3251 5019
3252 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
3253 5021
3254 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3273 5041
3274 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3275} 5043}
3276 5044
3277void 5045void
3278ev_stat_stop (EV_P_ ev_stat *w) 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3279{ 5047{
3280 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
3281 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
3282 return; 5050 return;
3283 5051
3284 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3285 5053
3286#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
3299} 5067}
3300#endif 5068#endif
3301 5069
3302#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
3303void 5071void
3304ev_idle_start (EV_P_ ev_idle *w) 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3305{ 5073{
3306 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
3307 return; 5075 return;
3308 5076
3309 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
3310 5078
3311 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
3314 int active = ++idlecnt [ABSPRI (w)]; 5082 int active = ++idlecnt [ABSPRI (w)];
3315 5083
3316 ++idleall; 5084 ++idleall;
3317 ev_start (EV_A_ (W)w, active); 5085 ev_start (EV_A_ (W)w, active);
3318 5086
3319 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3320 idles [ABSPRI (w)][active - 1] = w; 5088 idles [ABSPRI (w)][active - 1] = w;
3321 } 5089 }
3322 5090
3323 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
3324} 5092}
3325 5093
3326void 5094void
3327ev_idle_stop (EV_P_ ev_idle *w) 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3328{ 5096{
3329 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
3330 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
3331 return; 5099 return;
3332 5100
3333 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
3334 5102
3335 { 5103 {
… …
3346} 5114}
3347#endif 5115#endif
3348 5116
3349#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
3350void 5118void
3351ev_prepare_start (EV_P_ ev_prepare *w) 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3352{ 5120{
3353 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
3354 return; 5122 return;
3355 5123
3356 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3357 5125
3358 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
3359 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5127 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3360 prepares [preparecnt - 1] = w; 5128 prepares [preparecnt - 1] = w;
3361 5129
3362 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
3363} 5131}
3364 5132
3365void 5133void
3366ev_prepare_stop (EV_P_ ev_prepare *w) 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3367{ 5135{
3368 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
3369 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
3370 return; 5138 return;
3371 5139
3372 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
3373 5141
3374 { 5142 {
… …
3384} 5152}
3385#endif 5153#endif
3386 5154
3387#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
3388void 5156void
3389ev_check_start (EV_P_ ev_check *w) 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3390{ 5158{
3391 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
3392 return; 5160 return;
3393 5161
3394 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
3395 5163
3396 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
3397 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5165 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3398 checks [checkcnt - 1] = w; 5166 checks [checkcnt - 1] = w;
3399 5167
3400 EV_FREQUENT_CHECK; 5168 EV_FREQUENT_CHECK;
3401} 5169}
3402 5170
3403void 5171void
3404ev_check_stop (EV_P_ ev_check *w) 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3405{ 5173{
3406 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
3407 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
3408 return; 5176 return;
3409 5177
3410 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
3411 5179
3412 { 5180 {
… …
3421 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
3422} 5190}
3423#endif 5191#endif
3424 5192
3425#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
3426void noinline 5194ecb_noinline
5195void
3427ev_embed_sweep (EV_P_ ev_embed *w) 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3428{ 5197{
3429 ev_loop (w->other, EVLOOP_NONBLOCK); 5198 ev_run (w->other, EVRUN_NOWAIT);
3430} 5199}
3431 5200
3432static void 5201static void
3433embed_io_cb (EV_P_ ev_io *io, int revents) 5202embed_io_cb (EV_P_ ev_io *io, int revents)
3434{ 5203{
3435 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5204 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436 5205
3437 if (ev_cb (w)) 5206 if (ev_cb (w))
3438 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5207 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439 else 5208 else
3440 ev_loop (w->other, EVLOOP_NONBLOCK); 5209 ev_run (w->other, EVRUN_NOWAIT);
3441} 5210}
3442 5211
3443static void 5212static void
3444embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5213embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445{ 5214{
… …
3449 EV_P = w->other; 5218 EV_P = w->other;
3450 5219
3451 while (fdchangecnt) 5220 while (fdchangecnt)
3452 { 5221 {
3453 fd_reify (EV_A); 5222 fd_reify (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 5224 }
3456 } 5225 }
3457} 5226}
3458 5227
5228#if EV_FORK_ENABLE
3459static void 5229static void
3460embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3461{ 5231{
3462 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3463 5233
… …
3465 5235
3466 { 5236 {
3467 EV_P = w->other; 5237 EV_P = w->other;
3468 5238
3469 ev_loop_fork (EV_A); 5239 ev_loop_fork (EV_A);
3470 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
3471 } 5241 }
3472 5242
3473 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
3474} 5244}
5245#endif
3475 5246
3476#if 0 5247#if 0
3477static void 5248static void
3478embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3479{ 5250{
3480 ev_idle_stop (EV_A_ idle); 5251 ev_idle_stop (EV_A_ idle);
3481} 5252}
3482#endif 5253#endif
3483 5254
3484void 5255void
3485ev_embed_start (EV_P_ ev_embed *w) 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3486{ 5257{
3487 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
3488 return; 5259 return;
3489 5260
3490 { 5261 {
3491 EV_P = w->other; 5262 EV_P = w->other;
3492 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3500 5271
3501 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
3502 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
3503 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
3504 5275
5276#if EV_FORK_ENABLE
3505 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
3506 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
3507 5280
3508 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3509 5282
3510 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
3511 5284
3512 EV_FREQUENT_CHECK; 5285 EV_FREQUENT_CHECK;
3513} 5286}
3514 5287
3515void 5288void
3516ev_embed_stop (EV_P_ ev_embed *w) 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3517{ 5290{
3518 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
3519 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
3520 return; 5293 return;
3521 5294
3522 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
3523 5296
3524 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
3525 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
3526 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
3527 5302
3528 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
3529 5304
3530 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
3531} 5306}
3532#endif 5307#endif
3533 5308
3534#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
3535void 5310void
3536ev_fork_start (EV_P_ ev_fork *w) 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3537{ 5312{
3538 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
3539 return; 5314 return;
3540 5315
3541 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
3542 5317
3543 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
3544 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5319 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3545 forks [forkcnt - 1] = w; 5320 forks [forkcnt - 1] = w;
3546 5321
3547 EV_FREQUENT_CHECK; 5322 EV_FREQUENT_CHECK;
3548} 5323}
3549 5324
3550void 5325void
3551ev_fork_stop (EV_P_ ev_fork *w) 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3552{ 5327{
3553 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
3554 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
3555 return; 5330 return;
3556 5331
3557 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
3558 5333
3559 { 5334 {
… …
3567 5342
3568 EV_FREQUENT_CHECK; 5343 EV_FREQUENT_CHECK;
3569} 5344}
3570#endif 5345#endif
3571 5346
5347#if EV_CLEANUP_ENABLE
5348void
5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5350{
5351 if (ecb_expect_false (ev_is_active (w)))
5352 return;
5353
5354 EV_FREQUENT_CHECK;
5355
5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
5357 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5358 cleanups [cleanupcnt - 1] = w;
5359
5360 /* cleanup watchers should never keep a refcount on the loop */
5361 ev_unref (EV_A);
5362 EV_FREQUENT_CHECK;
5363}
5364
5365void
5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5367{
5368 clear_pending (EV_A_ (W)w);
5369 if (ecb_expect_false (!ev_is_active (w)))
5370 return;
5371
5372 EV_FREQUENT_CHECK;
5373 ev_ref (EV_A);
5374
5375 {
5376 int active = ev_active (w);
5377
5378 cleanups [active - 1] = cleanups [--cleanupcnt];
5379 ev_active (cleanups [active - 1]) = active;
5380 }
5381
5382 ev_stop (EV_A_ (W)w);
5383
5384 EV_FREQUENT_CHECK;
5385}
5386#endif
5387
3572#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
3573void 5389void
3574ev_async_start (EV_P_ ev_async *w) 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3575{ 5391{
3576 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
3577 return; 5393 return;
3578 5394
5395 w->sent = 0;
5396
3579 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
3580 5398
3581 EV_FREQUENT_CHECK; 5399 EV_FREQUENT_CHECK;
3582 5400
3583 ev_start (EV_A_ (W)w, ++asynccnt); 5401 ev_start (EV_A_ (W)w, ++asynccnt);
3584 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5402 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3585 asyncs [asynccnt - 1] = w; 5403 asyncs [asynccnt - 1] = w;
3586 5404
3587 EV_FREQUENT_CHECK; 5405 EV_FREQUENT_CHECK;
3588} 5406}
3589 5407
3590void 5408void
3591ev_async_stop (EV_P_ ev_async *w) 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3592{ 5410{
3593 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
3594 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
3595 return; 5413 return;
3596 5414
3597 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
3598 5416
3599 { 5417 {
… …
3607 5425
3608 EV_FREQUENT_CHECK; 5426 EV_FREQUENT_CHECK;
3609} 5427}
3610 5428
3611void 5429void
3612ev_async_send (EV_P_ ev_async *w) 5430ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3613{ 5431{
3614 w->sent = 1; 5432 w->sent = 1;
3615 evpipe_write (EV_A_ &async_pending); 5433 evpipe_write (EV_A_ &async_pending);
3616} 5434}
3617#endif 5435#endif
… …
3654 5472
3655 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5473 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3656} 5474}
3657 5475
3658void 5476void
3659ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5477ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3660{ 5478{
3661 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5479 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3662
3663 if (expect_false (!once))
3664 {
3665 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3666 return;
3667 }
3668 5480
3669 once->cb = cb; 5481 once->cb = cb;
3670 once->arg = arg; 5482 once->arg = arg;
3671 5483
3672 ev_init (&once->io, once_cb_io); 5484 ev_init (&once->io, once_cb_io);
… …
3685} 5497}
3686 5498
3687/*****************************************************************************/ 5499/*****************************************************************************/
3688 5500
3689#if EV_WALK_ENABLE 5501#if EV_WALK_ENABLE
5502ecb_cold
3690void 5503void
3691ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5504ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3692{ 5505{
3693 int i, j; 5506 int i, j;
3694 ev_watcher_list *wl, *wn; 5507 ev_watcher_list *wl, *wn;
3695 5508
3696 if (types & (EV_IO | EV_EMBED)) 5509 if (types & (EV_IO | EV_EMBED))
… …
3739 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5552 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740#endif 5553#endif
3741 5554
3742#if EV_IDLE_ENABLE 5555#if EV_IDLE_ENABLE
3743 if (types & EV_IDLE) 5556 if (types & EV_IDLE)
3744 for (j = NUMPRI; i--; ) 5557 for (j = NUMPRI; j--; )
3745 for (i = idlecnt [j]; i--; ) 5558 for (i = idlecnt [j]; i--; )
3746 cb (EV_A_ EV_IDLE, idles [j][i]); 5559 cb (EV_A_ EV_IDLE, idles [j][i]);
3747#endif 5560#endif
3748 5561
3749#if EV_FORK_ENABLE 5562#if EV_FORK_ENABLE
… …
3802 5615
3803#if EV_MULTIPLICITY 5616#if EV_MULTIPLICITY
3804 #include "ev_wrap.h" 5617 #include "ev_wrap.h"
3805#endif 5618#endif
3806 5619
3807#ifdef __cplusplus
3808}
3809#endif
3810

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