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Comparing libev/ev.c (file contents):
Revision 1.353 by root, Thu Oct 21 12:32:47 2010 UTC vs.
Revision 1.535 by sf-exg, Mon May 17 15:41:10 2021 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) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
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_register && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_register 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 (©) 2009-2015,2018-2020 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#if defined (_WIN32) && !defined (__MINGW32__)
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)
… …
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 fdchanges to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that means that for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
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 o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
950 2442
951 anfd->reify = 0; 2443 anfd->reify = 0;
952 2444
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 2446 {
964 anfd->events = 0; 2447 anfd->events = 0;
965 2448
966 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
967 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
972 2455
973 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
974 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
975 } 2458 }
976 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
977 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
978} 2468}
979 2469
980/* something about the given fd changed */ 2470/* something about the given fd changed */
981inline_size void 2471inline_size
2472void
982fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
983{ 2474{
984 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
985 anfds [fd].reify |= flags; 2476 anfds [fd].reify = reify | flags;
986 2477
987 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
988 { 2479 {
989 ++fdchangecnt; 2480 ++fdchangecnt;
990 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
991 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
992 } 2483 }
993} 2484}
994 2485
995/* 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 */
996inline_speed void 2487inline_speed ecb_cold void
997fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
998{ 2489{
999 ev_io *w; 2490 ev_io *w;
1000 2491
1001 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1004 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);
1005 } 2496 }
1006} 2497}
1007 2498
1008/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1009inline_size int 2500inline_size ecb_cold int
1010fd_valid (int fd) 2501fd_valid (int fd)
1011{ 2502{
1012#ifdef _WIN32 2503#ifdef _WIN32
1013 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014#else 2505#else
1015 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1016#endif 2507#endif
1017} 2508}
1018 2509
1019/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1020static void noinline 2511ecb_noinline ecb_cold
2512static void
1021fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1022{ 2514{
1023 int fd; 2515 int fd;
1024 2516
1025 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1027 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1028 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1029} 2521}
1030 2522
1031/* 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 */
1032static void noinline 2524ecb_noinline ecb_cold
2525static void
1033fd_enomem (EV_P) 2526fd_enomem (EV_P)
1034{ 2527{
1035 int fd; 2528 int fd;
1036 2529
1037 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1041 break; 2534 break;
1042 } 2535 }
1043} 2536}
1044 2537
1045/* 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 */
1046static void noinline 2539ecb_noinline
2540static void
1047fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1048{ 2542{
1049 int fd; 2543 int fd;
1050 2544
1051 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1104 ev_tstamp minat; 2598 ev_tstamp minat;
1105 ANHE *minpos; 2599 ANHE *minpos;
1106 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1107 2601
1108 /* find minimum child */ 2602 /* find minimum child */
1109 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1110 { 2604 {
1111 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1112 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));
1113 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));
1114 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));
1115 } 2609 }
1116 else if (pos < E) 2610 else if (pos < E)
1117 { 2611 {
1118 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1119 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1120 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1121 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1122 } 2616 }
1123 else 2617 else
1124 break; 2618 break;
1125 2619
1126 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1134 2628
1135 heap [k] = he; 2629 heap [k] = he;
1136 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1137} 2631}
1138 2632
1139#else /* 4HEAP */ 2633#else /* not 4HEAP */
1140 2634
1141#define HEAP0 1 2635#define HEAP0 1
1142#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1143#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1144 2638
… …
1216 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1217} 2711}
1218 2712
1219/*****************************************************************************/ 2713/*****************************************************************************/
1220 2714
1221/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1222typedef struct 2716typedef struct
1223{ 2717{
1224 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1225#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1226 EV_P; 2720 EV_P;
… …
1232 2726
1233/*****************************************************************************/ 2727/*****************************************************************************/
1234 2728
1235#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1236 2730
1237static void noinline 2731ecb_noinline ecb_cold
2732static void
1238evpipe_init (EV_P) 2733evpipe_init (EV_P)
1239{ 2734{
1240 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1241 { 2736 {
2737 int fds [2];
2738
1242# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1243 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1244 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1245 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1246 2744
1247 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1248 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1249 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1250 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1251 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));
1252 } 2806 }
1253 else 2807 else
1254# endif 2808#endif
1255 { 2809 {
1256 while (pipe (evpipe)) 2810#ifdef _WIN32
1257 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1258 2812 DWORD sent;
1259 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1260 fd_intern (evpipe [1]); 2814 buf.len = 1;
1261 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
1262 } 2819 }
1263
1264 ev_io_start (EV_A_ &pipe_w);
1265 ev_unref (EV_A); /* watcher should not keep loop alive */
1266 }
1267}
1268
1269inline_size void
1270evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271{
1272 if (!*flag)
1273 {
1274 int old_errno = errno; /* save errno because write might clobber it */
1275 char dummy;
1276
1277 *flag = 1;
1278
1279#if EV_USE_EVENTFD
1280 if (evfd >= 0)
1281 {
1282 uint64_t counter = 1;
1283 write (evfd, &counter, sizeof (uint64_t));
1284 }
1285 else
1286#endif
1287 /* win32 people keep sending patches that change this write() to send() */
1288 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289 /* so when you think this write should be a send instead, please find out */
1290 /* where your send() is from - it's definitely not the microsoft send, and */
1291 /* tell me. thank you. */
1292 write (evpipe [1], &dummy, 1);
1293 2820
1294 errno = old_errno; 2821 errno = old_errno;
1295 } 2822 }
1296} 2823}
1297 2824
… …
1300static void 2827static void
1301pipecb (EV_P_ ev_io *iow, int revents) 2828pipecb (EV_P_ ev_io *iow, int revents)
1302{ 2829{
1303 int i; 2830 int i;
1304 2831
2832 if (revents & EV_READ)
2833 {
1305#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1306 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1307 { 2836 {
1308 uint64_t counter; 2837 uint64_t counter;
1309 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1310 } 2839 }
1311 else 2840 else
1312#endif 2841#endif
1313 { 2842 {
1314 char dummy; 2843 char dummy[4];
1315 /* 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
1316 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
2854 }
1317 } 2855 }
1318 2856
2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2860
2861#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 2862 if (sig_pending)
1320 { 2863 {
1321 sig_pending = 0; 2864 sig_pending = 0;
1322 2865
2866 ECB_MEMORY_FENCE;
2867
1323 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1326 } 2871 }
2872#endif
1327 2873
1328#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1329 if (async_pending) 2875 if (async_pending)
1330 { 2876 {
1331 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1332 2880
1333 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1334 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1335 { 2883 {
1336 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1337 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1338 } 2887 }
1339 } 2888 }
1340#endif 2889#endif
1341} 2890}
1342 2891
1343/*****************************************************************************/ 2892/*****************************************************************************/
1344 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
1345static void 2910static void
1346ev_sighandler (int signum) 2911ev_sighandler (int signum)
1347{ 2912{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 2913#ifdef _WIN32
1353 signal (signum, ev_sighandler); 2914 signal (signum, ev_sighandler);
1354#endif 2915#endif
1355 2916
1356 signals [signum - 1].pending = 1; 2917 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 2918}
1359 2919
1360void noinline 2920ecb_noinline
2921void
1361ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1362{ 2923{
1363 WL w; 2924 WL w;
1364 2925
1365 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1366 return; 2927 return;
1367 2928
1368 --signum; 2929 --signum;
1369 2930
1370#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1371 /* 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 */
1372 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1373 2934
1374 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1375 return; 2936 return;
1376#endif 2937#endif
1377 2938
1378 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1379 2941
1380 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1381 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1382} 2944}
1383 2945
… …
1462 3024
1463#endif 3025#endif
1464 3026
1465/*****************************************************************************/ 3027/*****************************************************************************/
1466 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048#if EV_PERIODIC_ENABLE
3049 periodics_reschedule (EV_A);
3050#endif
3051}
3052
3053ecb_noinline ecb_cold
3054static void
3055evtimerfd_init (EV_P)
3056{
3057 if (!ev_is_active (&timerfd_w))
3058 {
3059 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3060
3061 if (timerfd >= 0)
3062 {
3063 fd_intern (timerfd); /* just to be sure */
3064
3065 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3066 ev_set_priority (&timerfd_w, EV_MINPRI);
3067 ev_io_start (EV_A_ &timerfd_w);
3068 ev_unref (EV_A); /* watcher should not keep loop alive */
3069
3070 /* (re-) arm timer */
3071 timerfdcb (EV_A_ 0, 0);
3072 }
3073 }
3074}
3075
3076#endif
3077
3078/*****************************************************************************/
3079
3080#if EV_USE_IOCP
3081# include "ev_iocp.c"
3082#endif
1467#if EV_USE_PORT 3083#if EV_USE_PORT
1468# include "ev_port.c" 3084# include "ev_port.c"
1469#endif 3085#endif
1470#if EV_USE_KQUEUE 3086#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 3087# include "ev_kqueue.c"
1472#endif 3088#endif
1473#if EV_USE_EPOLL 3089#if EV_USE_EPOLL
1474# include "ev_epoll.c" 3090# include "ev_epoll.c"
1475#endif 3091#endif
3092#if EV_USE_LINUXAIO
3093# include "ev_linuxaio.c"
3094#endif
3095#if EV_USE_IOURING
3096# include "ev_iouring.c"
3097#endif
1476#if EV_USE_POLL 3098#if EV_USE_POLL
1477# include "ev_poll.c" 3099# include "ev_poll.c"
1478#endif 3100#endif
1479#if EV_USE_SELECT 3101#if EV_USE_SELECT
1480# include "ev_select.c" 3102# include "ev_select.c"
1481#endif 3103#endif
1482 3104
1483int 3105ecb_cold int
1484ev_version_major (void) 3106ev_version_major (void) EV_NOEXCEPT
1485{ 3107{
1486 return EV_VERSION_MAJOR; 3108 return EV_VERSION_MAJOR;
1487} 3109}
1488 3110
1489int 3111ecb_cold int
1490ev_version_minor (void) 3112ev_version_minor (void) EV_NOEXCEPT
1491{ 3113{
1492 return EV_VERSION_MINOR; 3114 return EV_VERSION_MINOR;
1493} 3115}
1494 3116
1495/* return true if we are running with elevated privileges and should ignore env variables */ 3117/* return true if we are running with elevated privileges and should ignore env variables */
1496int inline_size 3118inline_size ecb_cold int
1497enable_secure (void) 3119enable_secure (void)
1498{ 3120{
1499#ifdef _WIN32 3121#ifdef _WIN32
1500 return 0; 3122 return 0;
1501#else 3123#else
1502 return getuid () != geteuid () 3124 return getuid () != geteuid ()
1503 || getgid () != getegid (); 3125 || getgid () != getegid ();
1504#endif 3126#endif
1505} 3127}
1506 3128
3129ecb_cold
1507unsigned int 3130unsigned int
1508ev_supported_backends (void) 3131ev_supported_backends (void) EV_NOEXCEPT
1509{ 3132{
1510 unsigned int flags = 0; 3133 unsigned int flags = 0;
1511 3134
1512 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3135 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1513 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3136 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1514 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3137 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1515 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3138 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
1516 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3139 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
1517 3140 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3141 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3142
1518 return flags; 3143 return flags;
1519} 3144}
1520 3145
3146ecb_cold
1521unsigned int 3147unsigned int
1522ev_recommended_backends (void) 3148ev_recommended_backends (void) EV_NOEXCEPT
1523{ 3149{
1524 unsigned int flags = ev_supported_backends (); 3150 unsigned int flags = ev_supported_backends ();
1525 3151
1526#ifndef __NetBSD__ 3152#ifndef __NetBSD__
1527 /* kqueue is borked on everything but netbsd apparently */ 3153 /* kqueue is borked on everything but netbsd apparently */
… …
1535#endif 3161#endif
1536#ifdef __FreeBSD__ 3162#ifdef __FreeBSD__
1537 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3163 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1538#endif 3164#endif
1539 3165
3166 /* TODO: linuxaio is very experimental */
3167#if !EV_RECOMMEND_LINUXAIO
3168 flags &= ~EVBACKEND_LINUXAIO;
3169#endif
3170 /* TODO: iouring is super experimental */
3171#if !EV_RECOMMEND_IOURING
3172 flags &= ~EVBACKEND_IOURING;
3173#endif
3174
1540 return flags; 3175 return flags;
1541} 3176}
1542 3177
3178ecb_cold
1543unsigned int 3179unsigned int
1544ev_embeddable_backends (void) 3180ev_embeddable_backends (void) EV_NOEXCEPT
1545{ 3181{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3182 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
1547 3183
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3184 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */ 3185 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550 flags &= ~EVBACKEND_EPOLL; 3186 flags &= ~EVBACKEND_EPOLL;
3187
3188 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
1551 3189
1552 return flags; 3190 return flags;
1553} 3191}
1554 3192
1555unsigned int 3193unsigned int
1556ev_backend (EV_P) 3194ev_backend (EV_P) EV_NOEXCEPT
1557{ 3195{
1558 return backend; 3196 return backend;
1559} 3197}
1560 3198
1561#if EV_FEATURE_API 3199#if EV_FEATURE_API
1562unsigned int 3200unsigned int
1563ev_iteration (EV_P) 3201ev_iteration (EV_P) EV_NOEXCEPT
1564{ 3202{
1565 return loop_count; 3203 return loop_count;
1566} 3204}
1567 3205
1568unsigned int 3206unsigned int
1569ev_depth (EV_P) 3207ev_depth (EV_P) EV_NOEXCEPT
1570{ 3208{
1571 return loop_depth; 3209 return loop_depth;
1572} 3210}
1573 3211
1574void 3212void
1575ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3213ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1576{ 3214{
1577 io_blocktime = interval; 3215 io_blocktime = interval;
1578} 3216}
1579 3217
1580void 3218void
1581ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3219ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1582{ 3220{
1583 timeout_blocktime = interval; 3221 timeout_blocktime = interval;
1584} 3222}
1585 3223
1586void 3224void
1587ev_set_userdata (EV_P_ void *data) 3225ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1588{ 3226{
1589 userdata = data; 3227 userdata = data;
1590} 3228}
1591 3229
1592void * 3230void *
1593ev_userdata (EV_P) 3231ev_userdata (EV_P) EV_NOEXCEPT
1594{ 3232{
1595 return userdata; 3233 return userdata;
1596} 3234}
1597 3235
3236void
1598void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3237ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1599{ 3238{
1600 invoke_cb = invoke_pending_cb; 3239 invoke_cb = invoke_pending_cb;
1601} 3240}
1602 3241
3242void
1603void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3243ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1604{ 3244{
1605 release_cb = release; 3245 release_cb = release;
1606 acquire_cb = acquire; 3246 acquire_cb = acquire;
1607} 3247}
1608#endif 3248#endif
1609 3249
1610/* initialise a loop structure, must be zero-initialised */ 3250/* initialise a loop structure, must be zero-initialised */
1611static void noinline 3251ecb_noinline ecb_cold
3252static void
1612loop_init (EV_P_ unsigned int flags) 3253loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1613{ 3254{
1614 if (!backend) 3255 if (!backend)
1615 { 3256 {
3257 origflags = flags;
3258
1616#if EV_USE_REALTIME 3259#if EV_USE_REALTIME
1617 if (!have_realtime) 3260 if (!have_realtime)
1618 { 3261 {
1619 struct timespec ts; 3262 struct timespec ts;
1620 3263
… …
1642 if (!(flags & EVFLAG_NOENV) 3285 if (!(flags & EVFLAG_NOENV)
1643 && !enable_secure () 3286 && !enable_secure ()
1644 && getenv ("LIBEV_FLAGS")) 3287 && getenv ("LIBEV_FLAGS"))
1645 flags = atoi (getenv ("LIBEV_FLAGS")); 3288 flags = atoi (getenv ("LIBEV_FLAGS"));
1646 3289
1647 ev_rt_now = ev_time (); 3290 ev_rt_now = ev_time ();
1648 mn_now = get_clock (); 3291 mn_now = get_clock ();
1649 now_floor = mn_now; 3292 now_floor = mn_now;
1650 rtmn_diff = ev_rt_now - mn_now; 3293 rtmn_diff = ev_rt_now - mn_now;
1651#if EV_FEATURE_API 3294#if EV_FEATURE_API
1652 invoke_cb = ev_invoke_pending; 3295 invoke_cb = ev_invoke_pending;
1653#endif 3296#endif
1654 3297
1655 io_blocktime = 0.; 3298 io_blocktime = 0.;
1656 timeout_blocktime = 0.; 3299 timeout_blocktime = 0.;
1657 backend = 0; 3300 backend = 0;
1658 backend_fd = -1; 3301 backend_fd = -1;
1659 sig_pending = 0; 3302 sig_pending = 0;
1660#if EV_ASYNC_ENABLE 3303#if EV_ASYNC_ENABLE
1661 async_pending = 0; 3304 async_pending = 0;
1662#endif 3305#endif
3306 pipe_write_skipped = 0;
3307 pipe_write_wanted = 0;
3308 evpipe [0] = -1;
3309 evpipe [1] = -1;
1663#if EV_USE_INOTIFY 3310#if EV_USE_INOTIFY
1664 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3311 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665#endif 3312#endif
1666#if EV_USE_SIGNALFD 3313#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3314 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 3315#endif
3316#if EV_USE_TIMERFD
3317 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3318#endif
1669 3319
1670 if (!(flags & 0x0000ffffU)) 3320 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 3321 flags |= ev_recommended_backends ();
1672 3322
3323#if EV_USE_IOCP
3324 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3325#endif
1673#if EV_USE_PORT 3326#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3327 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 3328#endif
1676#if EV_USE_KQUEUE 3329#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3330 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3331#endif
3332#if EV_USE_IOURING
3333 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3334#endif
3335#if EV_USE_LINUXAIO
3336 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1678#endif 3337#endif
1679#if EV_USE_EPOLL 3338#if EV_USE_EPOLL
1680 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3339 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1681#endif 3340#endif
1682#if EV_USE_POLL 3341#if EV_USE_POLL
1683 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3342 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1684#endif 3343#endif
1685#if EV_USE_SELECT 3344#if EV_USE_SELECT
1686 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3345 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1687#endif 3346#endif
1688 3347
1689 ev_prepare_init (&pending_w, pendingcb); 3348 ev_prepare_init (&pending_w, pendingcb);
1690 3349
1691#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3350#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1694#endif 3353#endif
1695 } 3354 }
1696} 3355}
1697 3356
1698/* free up a loop structure */ 3357/* free up a loop structure */
1699static void noinline 3358ecb_cold
3359void
1700loop_destroy (EV_P) 3360ev_loop_destroy (EV_P)
1701{ 3361{
1702 int i; 3362 int i;
3363
3364#if EV_MULTIPLICITY
3365 /* mimic free (0) */
3366 if (!EV_A)
3367 return;
3368#endif
3369
3370#if EV_CLEANUP_ENABLE
3371 /* queue cleanup watchers (and execute them) */
3372 if (ecb_expect_false (cleanupcnt))
3373 {
3374 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3375 EV_INVOKE_PENDING;
3376 }
3377#endif
3378
3379#if EV_CHILD_ENABLE
3380 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3381 {
3382 ev_ref (EV_A); /* child watcher */
3383 ev_signal_stop (EV_A_ &childev);
3384 }
3385#endif
1703 3386
1704 if (ev_is_active (&pipe_w)) 3387 if (ev_is_active (&pipe_w))
1705 { 3388 {
1706 /*ev_ref (EV_A);*/ 3389 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 3390 /*ev_io_stop (EV_A_ &pipe_w);*/
1708 3391
1709#if EV_USE_EVENTFD
1710 if (evfd >= 0)
1711 close (evfd);
1712#endif
1713
1714 if (evpipe [0] >= 0)
1715 {
1716 EV_WIN32_CLOSE_FD (evpipe [0]); 3392 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1717 EV_WIN32_CLOSE_FD (evpipe [1]); 3393 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1718 }
1719 } 3394 }
1720 3395
1721#if EV_USE_SIGNALFD 3396#if EV_USE_SIGNALFD
1722 if (ev_is_active (&sigfd_w)) 3397 if (ev_is_active (&sigfd_w))
1723 close (sigfd); 3398 close (sigfd);
1724#endif 3399#endif
1725 3400
3401#if EV_USE_TIMERFD
3402 if (ev_is_active (&timerfd_w))
3403 close (timerfd);
3404#endif
3405
1726#if EV_USE_INOTIFY 3406#if EV_USE_INOTIFY
1727 if (fs_fd >= 0) 3407 if (fs_fd >= 0)
1728 close (fs_fd); 3408 close (fs_fd);
1729#endif 3409#endif
1730 3410
1731 if (backend_fd >= 0) 3411 if (backend_fd >= 0)
1732 close (backend_fd); 3412 close (backend_fd);
1733 3413
3414#if EV_USE_IOCP
3415 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3416#endif
1734#if EV_USE_PORT 3417#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3418 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 3419#endif
1737#if EV_USE_KQUEUE 3420#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3421 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3422#endif
3423#if EV_USE_IOURING
3424 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3425#endif
3426#if EV_USE_LINUXAIO
3427 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1739#endif 3428#endif
1740#if EV_USE_EPOLL 3429#if EV_USE_EPOLL
1741 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3430 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1742#endif 3431#endif
1743#if EV_USE_POLL 3432#if EV_USE_POLL
1744 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3433 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1745#endif 3434#endif
1746#if EV_USE_SELECT 3435#if EV_USE_SELECT
1747 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3436 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1748#endif 3437#endif
1749 3438
1750 for (i = NUMPRI; i--; ) 3439 for (i = NUMPRI; i--; )
1751 { 3440 {
1752 array_free (pending, [i]); 3441 array_free (pending, [i]);
… …
1765 array_free (periodic, EMPTY); 3454 array_free (periodic, EMPTY);
1766#endif 3455#endif
1767#if EV_FORK_ENABLE 3456#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 3457 array_free (fork, EMPTY);
1769#endif 3458#endif
3459#if EV_CLEANUP_ENABLE
3460 array_free (cleanup, EMPTY);
3461#endif
1770 array_free (prepare, EMPTY); 3462 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 3463 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 3464#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 3465 array_free (async, EMPTY);
1774#endif 3466#endif
1775 3467
1776 backend = 0; 3468 backend = 0;
3469
3470#if EV_MULTIPLICITY
3471 if (ev_is_default_loop (EV_A))
3472#endif
3473 ev_default_loop_ptr = 0;
3474#if EV_MULTIPLICITY
3475 else
3476 ev_free (EV_A);
3477#endif
1777} 3478}
1778 3479
1779#if EV_USE_INOTIFY 3480#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 3481inline_size void infy_fork (EV_P);
1781#endif 3482#endif
1782 3483
1783inline_size void 3484inline_size void
1784loop_fork (EV_P) 3485loop_fork (EV_P)
1785{ 3486{
1786#if EV_USE_PORT 3487#if EV_USE_PORT
1787 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3488 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1788#endif 3489#endif
1789#if EV_USE_KQUEUE 3490#if EV_USE_KQUEUE
1790 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3491 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3492#endif
3493#if EV_USE_IOURING
3494 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3495#endif
3496#if EV_USE_LINUXAIO
3497 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1791#endif 3498#endif
1792#if EV_USE_EPOLL 3499#if EV_USE_EPOLL
1793 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3500 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1794#endif 3501#endif
1795#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
1796 infy_fork (EV_A); 3503 infy_fork (EV_A);
1797#endif 3504#endif
1798 3505
3506 if (postfork != 2)
3507 {
3508 #if EV_USE_SIGNALFD
3509 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3510 #endif
3511
3512 #if EV_USE_TIMERFD
3513 if (ev_is_active (&timerfd_w))
3514 {
3515 ev_ref (EV_A);
3516 ev_io_stop (EV_A_ &timerfd_w);
3517
3518 close (timerfd);
3519 timerfd = -2;
3520
3521 evtimerfd_init (EV_A);
3522 /* reschedule periodics, in case we missed something */
3523 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3524 }
3525 #endif
3526
3527 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1799 if (ev_is_active (&pipe_w)) 3528 if (ev_is_active (&pipe_w))
1800 { 3529 {
1801 /* this "locks" the handlers against writing to the pipe */ 3530 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802 /* while we modify the fd vars */ 3531
1803 sig_pending = 1;
1804#if EV_ASYNC_ENABLE
1805 async_pending = 1;
1806#endif
1807
1808 ev_ref (EV_A); 3532 ev_ref (EV_A);
1809 ev_io_stop (EV_A_ &pipe_w); 3533 ev_io_stop (EV_A_ &pipe_w);
1810 3534
1811#if EV_USE_EVENTFD
1812 if (evfd >= 0)
1813 close (evfd);
1814#endif
1815
1816 if (evpipe [0] >= 0) 3535 if (evpipe [0] >= 0)
1817 {
1818 EV_WIN32_CLOSE_FD (evpipe [0]); 3536 EV_WIN32_CLOSE_FD (evpipe [0]);
1819 EV_WIN32_CLOSE_FD (evpipe [1]); 3537
3538 evpipe_init (EV_A);
3539 /* iterate over everything, in case we missed something before */
3540 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1820 } 3541 }
1821 3542 #endif
1822#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1823 evpipe_init (EV_A);
1824 /* now iterate over everything, in case we missed something */
1825 pipecb (EV_A_ &pipe_w, EV_READ);
1826#endif
1827 } 3543 }
1828 3544
1829 postfork = 0; 3545 postfork = 0;
1830} 3546}
1831 3547
1832#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
1833 3549
3550ecb_cold
1834struct ev_loop * 3551struct ev_loop *
1835ev_loop_new (unsigned int flags) 3552ev_loop_new (unsigned int flags) EV_NOEXCEPT
1836{ 3553{
1837 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3554 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838 3555
1839 memset (EV_A, 0, sizeof (struct ev_loop)); 3556 memset (EV_A, 0, sizeof (struct ev_loop));
1840 loop_init (EV_A_ flags); 3557 loop_init (EV_A_ flags);
1841 3558
1842 if (ev_backend (EV_A)) 3559 if (ev_backend (EV_A))
1843 return EV_A; 3560 return EV_A;
1844 3561
3562 ev_free (EV_A);
1845 return 0; 3563 return 0;
1846} 3564}
1847 3565
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 3566#endif /* multiplicity */
1861 3567
1862#if EV_VERIFY 3568#if EV_VERIFY
1863static void noinline 3569ecb_noinline ecb_cold
3570static void
1864verify_watcher (EV_P_ W w) 3571verify_watcher (EV_P_ W w)
1865{ 3572{
1866 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3573 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867 3574
1868 if (w->pending) 3575 if (w->pending)
1869 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3576 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870} 3577}
1871 3578
1872static void noinline 3579ecb_noinline ecb_cold
3580static void
1873verify_heap (EV_P_ ANHE *heap, int N) 3581verify_heap (EV_P_ ANHE *heap, int N)
1874{ 3582{
1875 int i; 3583 int i;
1876 3584
1877 for (i = HEAP0; i < N + HEAP0; ++i) 3585 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1882 3590
1883 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3591 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884 } 3592 }
1885} 3593}
1886 3594
1887static void noinline 3595ecb_noinline ecb_cold
3596static void
1888array_verify (EV_P_ W *ws, int cnt) 3597array_verify (EV_P_ W *ws, int cnt)
1889{ 3598{
1890 while (cnt--) 3599 while (cnt--)
1891 { 3600 {
1892 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1894 } 3603 }
1895} 3604}
1896#endif 3605#endif
1897 3606
1898#if EV_FEATURE_API 3607#if EV_FEATURE_API
1899void 3608void ecb_cold
1900ev_verify (EV_P) 3609ev_verify (EV_P) EV_NOEXCEPT
1901{ 3610{
1902#if EV_VERIFY 3611#if EV_VERIFY
1903 int i; 3612 int i;
1904 WL w; 3613 WL w, w2;
1905 3614
1906 assert (activecnt >= -1); 3615 assert (activecnt >= -1);
1907 3616
1908 assert (fdchangemax >= fdchangecnt); 3617 assert (fdchangemax >= fdchangecnt);
1909 for (i = 0; i < fdchangecnt; ++i) 3618 for (i = 0; i < fdchangecnt; ++i)
1910 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3619 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1911 3620
1912 assert (anfdmax >= 0); 3621 assert (anfdmax >= 0);
1913 for (i = 0; i < anfdmax; ++i) 3622 for (i = 0; i < anfdmax; ++i)
3623 {
3624 int j = 0;
3625
1914 for (w = anfds [i].head; w; w = w->next) 3626 for (w = w2 = anfds [i].head; w; w = w->next)
1915 { 3627 {
1916 verify_watcher (EV_A_ (W)w); 3628 verify_watcher (EV_A_ (W)w);
3629
3630 if (j++ & 1)
3631 {
3632 assert (("libev: io watcher list contains a loop", w != w2));
3633 w2 = w2->next;
3634 }
3635
1917 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3636 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1918 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3637 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1919 } 3638 }
3639 }
1920 3640
1921 assert (timermax >= timercnt); 3641 assert (timermax >= timercnt);
1922 verify_heap (EV_A_ timers, timercnt); 3642 verify_heap (EV_A_ timers, timercnt);
1923 3643
1924#if EV_PERIODIC_ENABLE 3644#if EV_PERIODIC_ENABLE
… …
1939#if EV_FORK_ENABLE 3659#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 3660 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 3661 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 3662#endif
1943 3663
3664#if EV_CLEANUP_ENABLE
3665 assert (cleanupmax >= cleanupcnt);
3666 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3667#endif
3668
1944#if EV_ASYNC_ENABLE 3669#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 3670 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 3671 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 3672#endif
1948 3673
… …
1965#endif 3690#endif
1966} 3691}
1967#endif 3692#endif
1968 3693
1969#if EV_MULTIPLICITY 3694#if EV_MULTIPLICITY
3695ecb_cold
1970struct ev_loop * 3696struct ev_loop *
1971ev_default_loop_init (unsigned int flags)
1972#else 3697#else
1973int 3698int
3699#endif
1974ev_default_loop (unsigned int flags) 3700ev_default_loop (unsigned int flags) EV_NOEXCEPT
1975#endif
1976{ 3701{
1977 if (!ev_default_loop_ptr) 3702 if (!ev_default_loop_ptr)
1978 { 3703 {
1979#if EV_MULTIPLICITY 3704#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 3705 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 3724
2000 return ev_default_loop_ptr; 3725 return ev_default_loop_ptr;
2001} 3726}
2002 3727
2003void 3728void
2004ev_default_destroy (void) 3729ev_loop_fork (EV_P) EV_NOEXCEPT
2005{ 3730{
2006#if EV_MULTIPLICITY 3731 postfork = 1;
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */
2028} 3732}
2029 3733
2030/*****************************************************************************/ 3734/*****************************************************************************/
2031 3735
2032void 3736void
… …
2034{ 3738{
2035 EV_CB_INVOKE ((W)w, revents); 3739 EV_CB_INVOKE ((W)w, revents);
2036} 3740}
2037 3741
2038unsigned int 3742unsigned int
2039ev_pending_count (EV_P) 3743ev_pending_count (EV_P) EV_NOEXCEPT
2040{ 3744{
2041 int pri; 3745 int pri;
2042 unsigned int count = 0; 3746 unsigned int count = 0;
2043 3747
2044 for (pri = NUMPRI; pri--; ) 3748 for (pri = NUMPRI; pri--; )
2045 count += pendingcnt [pri]; 3749 count += pendingcnt [pri];
2046 3750
2047 return count; 3751 return count;
2048} 3752}
2049 3753
2050void noinline 3754ecb_noinline
3755void
2051ev_invoke_pending (EV_P) 3756ev_invoke_pending (EV_P)
2052{ 3757{
2053 int pri; 3758 pendingpri = NUMPRI;
2054 3759
2055 for (pri = NUMPRI; pri--; ) 3760 do
3761 {
3762 --pendingpri;
3763
3764 /* pendingpri possibly gets modified in the inner loop */
2056 while (pendingcnt [pri]) 3765 while (pendingcnt [pendingpri])
2057 { 3766 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2059 3768
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062
2063 p->w->pending = 0; 3769 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 3770 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 3771 EV_FREQUENT_CHECK;
2066 } 3772 }
3773 }
3774 while (pendingpri);
2067} 3775}
2068 3776
2069#if EV_IDLE_ENABLE 3777#if EV_IDLE_ENABLE
2070/* make idle watchers pending. this handles the "call-idle */ 3778/* make idle watchers pending. this handles the "call-idle */
2071/* only when higher priorities are idle" logic */ 3779/* only when higher priorities are idle" logic */
2072inline_size void 3780inline_size void
2073idle_reify (EV_P) 3781idle_reify (EV_P)
2074{ 3782{
2075 if (expect_false (idleall)) 3783 if (ecb_expect_false (idleall))
2076 { 3784 {
2077 int pri; 3785 int pri;
2078 3786
2079 for (pri = NUMPRI; pri--; ) 3787 for (pri = NUMPRI; pri--; )
2080 { 3788 {
… …
2110 { 3818 {
2111 ev_at (w) += w->repeat; 3819 ev_at (w) += w->repeat;
2112 if (ev_at (w) < mn_now) 3820 if (ev_at (w) < mn_now)
2113 ev_at (w) = mn_now; 3821 ev_at (w) = mn_now;
2114 3822
2115 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3823 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2116 3824
2117 ANHE_at_cache (timers [HEAP0]); 3825 ANHE_at_cache (timers [HEAP0]);
2118 downheap (timers, timercnt, HEAP0); 3826 downheap (timers, timercnt, HEAP0);
2119 } 3827 }
2120 else 3828 else
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 3836 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 3837 }
2130} 3838}
2131 3839
2132#if EV_PERIODIC_ENABLE 3840#if EV_PERIODIC_ENABLE
3841
3842ecb_noinline
3843static void
3844periodic_recalc (EV_P_ ev_periodic *w)
3845{
3846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3848
3849 /* the above almost always errs on the low side */
3850 while (at <= ev_rt_now)
3851 {
3852 ev_tstamp nat = at + w->interval;
3853
3854 /* when resolution fails us, we use ev_rt_now */
3855 if (ecb_expect_false (nat == at))
3856 {
3857 at = ev_rt_now;
3858 break;
3859 }
3860
3861 at = nat;
3862 }
3863
3864 ev_at (w) = at;
3865}
3866
2133/* make periodics pending */ 3867/* make periodics pending */
2134inline_size void 3868inline_size void
2135periodics_reify (EV_P) 3869periodics_reify (EV_P)
2136{ 3870{
2137 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2138 3872
2139 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2140 { 3874 {
2141 int feed_count = 0;
2142
2143 do 3875 do
2144 { 3876 {
2145 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2146 3878
2147 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2156 ANHE_at_cache (periodics [HEAP0]); 3888 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3889 downheap (periodics, periodiccnt, HEAP0);
2158 } 3890 }
2159 else if (w->interval) 3891 else if (w->interval)
2160 { 3892 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3893 periodic_recalc (EV_A_ w);
2162 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 {
2166 ev_at (w) += w->interval;
2167
2168 /* if interval is unreasonably low we might still have a time in the past */
2169 /* so correct this. this will make the periodic very inexact, but the user */
2170 /* has effectively asked to get triggered more often than possible */
2171 if (ev_at (w) < ev_rt_now)
2172 ev_at (w) = ev_rt_now;
2173 }
2174
2175 ANHE_at_cache (periodics [HEAP0]); 3894 ANHE_at_cache (periodics [HEAP0]);
2176 downheap (periodics, periodiccnt, HEAP0); 3895 downheap (periodics, periodiccnt, HEAP0);
2177 } 3896 }
2178 else 3897 else
2179 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2187 } 3906 }
2188} 3907}
2189 3908
2190/* simply recalculate all periodics */ 3909/* simply recalculate all periodics */
2191/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3910/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192static void noinline 3911ecb_noinline ecb_cold
3912static void
2193periodics_reschedule (EV_P) 3913periodics_reschedule (EV_P)
2194{ 3914{
2195 int i; 3915 int i;
2196 3916
2197 /* adjust periodics after time jump */ 3917 /* adjust periodics after time jump */
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 3921
2202 if (w->reschedule_cb) 3922 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3923 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 3924 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3925 periodic_recalc (EV_A_ w);
2206 3926
2207 ANHE_at_cache (periodics [i]); 3927 ANHE_at_cache (periodics [i]);
2208 } 3928 }
2209 3929
2210 reheap (periodics, periodiccnt); 3930 reheap (periodics, periodiccnt);
2211} 3931}
2212#endif 3932#endif
2213 3933
2214/* adjust all timers by a given offset */ 3934/* adjust all timers by a given offset */
2215static void noinline 3935ecb_noinline ecb_cold
3936static void
2216timers_reschedule (EV_P_ ev_tstamp adjust) 3937timers_reschedule (EV_P_ ev_tstamp adjust)
2217{ 3938{
2218 int i; 3939 int i;
2219 3940
2220 for (i = 0; i < timercnt; ++i) 3941 for (i = 0; i < timercnt; ++i)
… …
2229/* also detect if there was a timejump, and act accordingly */ 3950/* also detect if there was a timejump, and act accordingly */
2230inline_speed void 3951inline_speed void
2231time_update (EV_P_ ev_tstamp max_block) 3952time_update (EV_P_ ev_tstamp max_block)
2232{ 3953{
2233#if EV_USE_MONOTONIC 3954#if EV_USE_MONOTONIC
2234 if (expect_true (have_monotonic)) 3955 if (ecb_expect_true (have_monotonic))
2235 { 3956 {
2236 int i; 3957 int i;
2237 ev_tstamp odiff = rtmn_diff; 3958 ev_tstamp odiff = rtmn_diff;
2238 3959
2239 mn_now = get_clock (); 3960 mn_now = get_clock ();
2240 3961
2241 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2242 /* interpolate in the meantime */ 3963 /* interpolate in the meantime */
2243 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3964 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2244 { 3965 {
2245 ev_rt_now = rtmn_diff + mn_now; 3966 ev_rt_now = rtmn_diff + mn_now;
2246 return; 3967 return;
2247 } 3968 }
2248 3969
… …
2257 * doesn't hurt either as we only do this on time-jumps or 3978 * doesn't hurt either as we only do this on time-jumps or
2258 * in the unlikely event of having been preempted here. 3979 * in the unlikely event of having been preempted here.
2259 */ 3980 */
2260 for (i = 4; --i; ) 3981 for (i = 4; --i; )
2261 { 3982 {
3983 ev_tstamp diff;
2262 rtmn_diff = ev_rt_now - mn_now; 3984 rtmn_diff = ev_rt_now - mn_now;
2263 3985
2264 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3986 diff = odiff - rtmn_diff;
3987
3988 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2265 return; /* all is well */ 3989 return; /* all is well */
2266 3990
2267 ev_rt_now = ev_time (); 3991 ev_rt_now = ev_time ();
2268 mn_now = get_clock (); 3992 mn_now = get_clock ();
2269 now_floor = mn_now; 3993 now_floor = mn_now;
… …
2278 else 4002 else
2279#endif 4003#endif
2280 { 4004 {
2281 ev_rt_now = ev_time (); 4005 ev_rt_now = ev_time ();
2282 4006
2283 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4007 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2284 { 4008 {
2285 /* adjust timers. this is easy, as the offset is the same for all of them */ 4009 /* adjust timers. this is easy, as the offset is the same for all of them */
2286 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4010 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2287#if EV_PERIODIC_ENABLE 4011#if EV_PERIODIC_ENABLE
2288 periodics_reschedule (EV_A); 4012 periodics_reschedule (EV_A);
… …
2291 4015
2292 mn_now = ev_rt_now; 4016 mn_now = ev_rt_now;
2293 } 4017 }
2294} 4018}
2295 4019
2296void 4020int
2297ev_run (EV_P_ int flags) 4021ev_run (EV_P_ int flags)
2298{ 4022{
2299#if EV_FEATURE_API 4023#if EV_FEATURE_API
2300 ++loop_depth; 4024 ++loop_depth;
2301#endif 4025#endif
… …
2311#if EV_VERIFY >= 2 4035#if EV_VERIFY >= 2
2312 ev_verify (EV_A); 4036 ev_verify (EV_A);
2313#endif 4037#endif
2314 4038
2315#ifndef _WIN32 4039#ifndef _WIN32
2316 if (expect_false (curpid)) /* penalise the forking check even more */ 4040 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2317 if (expect_false (getpid () != curpid)) 4041 if (ecb_expect_false (getpid () != curpid))
2318 { 4042 {
2319 curpid = getpid (); 4043 curpid = getpid ();
2320 postfork = 1; 4044 postfork = 1;
2321 } 4045 }
2322#endif 4046#endif
2323 4047
2324#if EV_FORK_ENABLE 4048#if EV_FORK_ENABLE
2325 /* we might have forked, so queue fork handlers */ 4049 /* we might have forked, so queue fork handlers */
2326 if (expect_false (postfork)) 4050 if (ecb_expect_false (postfork))
2327 if (forkcnt) 4051 if (forkcnt)
2328 { 4052 {
2329 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4053 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2330 EV_INVOKE_PENDING; 4054 EV_INVOKE_PENDING;
2331 } 4055 }
2332#endif 4056#endif
2333 4057
2334#if EV_PREPARE_ENABLE 4058#if EV_PREPARE_ENABLE
2335 /* queue prepare watchers (and execute them) */ 4059 /* queue prepare watchers (and execute them) */
2336 if (expect_false (preparecnt)) 4060 if (ecb_expect_false (preparecnt))
2337 { 4061 {
2338 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2339 EV_INVOKE_PENDING; 4063 EV_INVOKE_PENDING;
2340 } 4064 }
2341#endif 4065#endif
2342 4066
2343 if (expect_false (loop_done)) 4067 if (ecb_expect_false (loop_done))
2344 break; 4068 break;
2345 4069
2346 /* we might have forked, so reify kernel state if necessary */ 4070 /* we might have forked, so reify kernel state if necessary */
2347 if (expect_false (postfork)) 4071 if (ecb_expect_false (postfork))
2348 loop_fork (EV_A); 4072 loop_fork (EV_A);
2349 4073
2350 /* update fd-related kernel structures */ 4074 /* update fd-related kernel structures */
2351 fd_reify (EV_A); 4075 fd_reify (EV_A);
2352 4076
… …
2357 4081
2358 /* remember old timestamp for io_blocktime calculation */ 4082 /* remember old timestamp for io_blocktime calculation */
2359 ev_tstamp prev_mn_now = mn_now; 4083 ev_tstamp prev_mn_now = mn_now;
2360 4084
2361 /* update time to cancel out callback processing overhead */ 4085 /* update time to cancel out callback processing overhead */
2362 time_update (EV_A_ 1e100); 4086 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
2363 4087
4088 /* from now on, we want a pipe-wake-up */
4089 pipe_write_wanted = 1;
4090
4091 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
4092
2364 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 4093 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2365 { 4094 {
2366 waittime = MAX_BLOCKTIME; 4095 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4096
4097#if EV_USE_MONOTONIC
4098 if (ecb_expect_true (have_monotonic))
4099 {
4100#if EV_USE_TIMERFD
4101 /* sleep a lot longer when we can reliably detect timejumps */
4102 if (ecb_expect_true (timerfd != -1))
4103 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4104#endif
4105#if !EV_PERIODIC_ENABLE
4106 /* without periodics but with monotonic clock there is no need */
4107 /* for any time jump detection, so sleep longer */
4108 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4109#endif
4110 }
4111#endif
2367 4112
2368 if (timercnt) 4113 if (timercnt)
2369 { 4114 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 4115 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371 if (waittime > to) waittime = to; 4116 if (waittime > to) waittime = to;
2372 } 4117 }
2373 4118
2374#if EV_PERIODIC_ENABLE 4119#if EV_PERIODIC_ENABLE
2375 if (periodiccnt) 4120 if (periodiccnt)
2376 { 4121 {
2377 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 4122 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378 if (waittime > to) waittime = to; 4123 if (waittime > to) waittime = to;
2379 } 4124 }
2380#endif 4125#endif
2381 4126
2382 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4127 /* don't let timeouts decrease the waittime below timeout_blocktime */
2383 if (expect_false (waittime < timeout_blocktime)) 4128 if (ecb_expect_false (waittime < timeout_blocktime))
2384 waittime = timeout_blocktime; 4129 waittime = timeout_blocktime;
2385 4130
4131 /* now there are two more special cases left, either we have
4132 * already-expired timers, so we should not sleep, or we have timers
4133 * that expire very soon, in which case we need to wait for a minimum
4134 * amount of time for some event loop backends.
4135 */
4136 if (ecb_expect_false (waittime < backend_mintime))
4137 waittime = waittime <= EV_TS_CONST (0.)
4138 ? EV_TS_CONST (0.)
4139 : backend_mintime;
4140
2386 /* extra check because io_blocktime is commonly 0 */ 4141 /* extra check because io_blocktime is commonly 0 */
2387 if (expect_false (io_blocktime)) 4142 if (ecb_expect_false (io_blocktime))
2388 { 4143 {
2389 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4144 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390 4145
2391 if (sleeptime > waittime - backend_fudge) 4146 if (sleeptime > waittime - backend_mintime)
2392 sleeptime = waittime - backend_fudge; 4147 sleeptime = waittime - backend_mintime;
2393 4148
2394 if (expect_true (sleeptime > 0.)) 4149 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2395 { 4150 {
2396 ev_sleep (sleeptime); 4151 ev_sleep (sleeptime);
2397 waittime -= sleeptime; 4152 waittime -= sleeptime;
2398 } 4153 }
2399 } 4154 }
… …
2404#endif 4159#endif
2405 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 4160 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 4161 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4162 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2408 4163
4164 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4165
4166 ECB_MEMORY_FENCE_ACQUIRE;
4167 if (pipe_write_skipped)
4168 {
4169 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4170 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4171 }
4172
2409 /* update ev_rt_now, do magic */ 4173 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 4174 time_update (EV_A_ waittime + sleeptime);
2411 } 4175 }
2412 4176
2413 /* queue pending timers and reschedule them */ 4177 /* queue pending timers and reschedule them */
… …
2421 idle_reify (EV_A); 4185 idle_reify (EV_A);
2422#endif 4186#endif
2423 4187
2424#if EV_CHECK_ENABLE 4188#if EV_CHECK_ENABLE
2425 /* queue check watchers, to be executed first */ 4189 /* queue check watchers, to be executed first */
2426 if (expect_false (checkcnt)) 4190 if (ecb_expect_false (checkcnt))
2427 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2428#endif 4192#endif
2429 4193
2430 EV_INVOKE_PENDING; 4194 EV_INVOKE_PENDING;
2431 } 4195 }
2432 while (expect_true ( 4196 while (ecb_expect_true (
2433 activecnt 4197 activecnt
2434 && !loop_done 4198 && !loop_done
2435 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4199 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 4200 ));
2437 4201
… …
2439 loop_done = EVBREAK_CANCEL; 4203 loop_done = EVBREAK_CANCEL;
2440 4204
2441#if EV_FEATURE_API 4205#if EV_FEATURE_API
2442 --loop_depth; 4206 --loop_depth;
2443#endif 4207#endif
4208
4209 return activecnt;
2444} 4210}
2445 4211
2446void 4212void
2447ev_break (EV_P_ int how) 4213ev_break (EV_P_ int how) EV_NOEXCEPT
2448{ 4214{
2449 loop_done = how; 4215 loop_done = how;
2450} 4216}
2451 4217
2452void 4218void
2453ev_ref (EV_P) 4219ev_ref (EV_P) EV_NOEXCEPT
2454{ 4220{
2455 ++activecnt; 4221 ++activecnt;
2456} 4222}
2457 4223
2458void 4224void
2459ev_unref (EV_P) 4225ev_unref (EV_P) EV_NOEXCEPT
2460{ 4226{
2461 --activecnt; 4227 --activecnt;
2462} 4228}
2463 4229
2464void 4230void
2465ev_now_update (EV_P) 4231ev_now_update (EV_P) EV_NOEXCEPT
2466{ 4232{
2467 time_update (EV_A_ 1e100); 4233 time_update (EV_A_ EV_TSTAMP_HUGE);
2468} 4234}
2469 4235
2470void 4236void
2471ev_suspend (EV_P) 4237ev_suspend (EV_P) EV_NOEXCEPT
2472{ 4238{
2473 ev_now_update (EV_A); 4239 ev_now_update (EV_A);
2474} 4240}
2475 4241
2476void 4242void
2477ev_resume (EV_P) 4243ev_resume (EV_P) EV_NOEXCEPT
2478{ 4244{
2479 ev_tstamp mn_prev = mn_now; 4245 ev_tstamp mn_prev = mn_now;
2480 4246
2481 ev_now_update (EV_A); 4247 ev_now_update (EV_A);
2482 timers_reschedule (EV_A_ mn_now - mn_prev); 4248 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2499inline_size void 4265inline_size void
2500wlist_del (WL *head, WL elem) 4266wlist_del (WL *head, WL elem)
2501{ 4267{
2502 while (*head) 4268 while (*head)
2503 { 4269 {
2504 if (expect_true (*head == elem)) 4270 if (ecb_expect_true (*head == elem))
2505 { 4271 {
2506 *head = elem->next; 4272 *head = elem->next;
2507 break; 4273 break;
2508 } 4274 }
2509 4275
… …
2521 w->pending = 0; 4287 w->pending = 0;
2522 } 4288 }
2523} 4289}
2524 4290
2525int 4291int
2526ev_clear_pending (EV_P_ void *w) 4292ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2527{ 4293{
2528 W w_ = (W)w; 4294 W w_ = (W)w;
2529 int pending = w_->pending; 4295 int pending = w_->pending;
2530 4296
2531 if (expect_true (pending)) 4297 if (ecb_expect_true (pending))
2532 { 4298 {
2533 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4299 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2534 p->w = (W)&pending_w; 4300 p->w = (W)&pending_w;
2535 w_->pending = 0; 4301 w_->pending = 0;
2536 return p->events; 4302 return p->events;
… …
2563 w->active = 0; 4329 w->active = 0;
2564} 4330}
2565 4331
2566/*****************************************************************************/ 4332/*****************************************************************************/
2567 4333
2568void noinline 4334ecb_noinline
4335void
2569ev_io_start (EV_P_ ev_io *w) 4336ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2570{ 4337{
2571 int fd = w->fd; 4338 int fd = w->fd;
2572 4339
2573 if (expect_false (ev_is_active (w))) 4340 if (ecb_expect_false (ev_is_active (w)))
2574 return; 4341 return;
2575 4342
2576 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4343 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2577 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4344 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2578 4345
4346#if EV_VERIFY >= 2
4347 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4348#endif
2579 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
2580 4350
2581 ev_start (EV_A_ (W)w, 1); 4351 ev_start (EV_A_ (W)w, 1);
2582 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4352 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2583 wlist_add (&anfds[fd].head, (WL)w); 4353 wlist_add (&anfds[fd].head, (WL)w);
4354
4355 /* common bug, apparently */
4356 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2584 4357
2585 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4358 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2586 w->events &= ~EV__IOFDSET; 4359 w->events &= ~EV__IOFDSET;
2587 4360
2588 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2589} 4362}
2590 4363
2591void noinline 4364ecb_noinline
4365void
2592ev_io_stop (EV_P_ ev_io *w) 4366ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2593{ 4367{
2594 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w))) 4369 if (ecb_expect_false (!ev_is_active (w)))
2596 return; 4370 return;
2597 4371
2598 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4372 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2599 4373
4374#if EV_VERIFY >= 2
4375 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4376#endif
2600 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
2601 4378
2602 wlist_del (&anfds[w->fd].head, (WL)w); 4379 wlist_del (&anfds[w->fd].head, (WL)w);
2603 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2604 4381
2605 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4382 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2606 4383
2607 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
2608} 4385}
2609 4386
2610void noinline 4387ecb_noinline
4388void
2611ev_timer_start (EV_P_ ev_timer *w) 4389ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2612{ 4390{
2613 if (expect_false (ev_is_active (w))) 4391 if (ecb_expect_false (ev_is_active (w)))
2614 return; 4392 return;
2615 4393
2616 ev_at (w) += mn_now; 4394 ev_at (w) += mn_now;
2617 4395
2618 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4396 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2619 4397
2620 EV_FREQUENT_CHECK; 4398 EV_FREQUENT_CHECK;
2621 4399
2622 ++timercnt; 4400 ++timercnt;
2623 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4401 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2624 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4402 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2625 ANHE_w (timers [ev_active (w)]) = (WT)w; 4403 ANHE_w (timers [ev_active (w)]) = (WT)w;
2626 ANHE_at_cache (timers [ev_active (w)]); 4404 ANHE_at_cache (timers [ev_active (w)]);
2627 upheap (timers, ev_active (w)); 4405 upheap (timers, ev_active (w));
2628 4406
2629 EV_FREQUENT_CHECK; 4407 EV_FREQUENT_CHECK;
2630 4408
2631 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4409 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2632} 4410}
2633 4411
2634void noinline 4412ecb_noinline
4413void
2635ev_timer_stop (EV_P_ ev_timer *w) 4414ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2636{ 4415{
2637 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
2638 if (expect_false (!ev_is_active (w))) 4417 if (ecb_expect_false (!ev_is_active (w)))
2639 return; 4418 return;
2640 4419
2641 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2642 4421
2643 { 4422 {
… …
2645 4424
2646 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4425 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2647 4426
2648 --timercnt; 4427 --timercnt;
2649 4428
2650 if (expect_true (active < timercnt + HEAP0)) 4429 if (ecb_expect_true (active < timercnt + HEAP0))
2651 { 4430 {
2652 timers [active] = timers [timercnt + HEAP0]; 4431 timers [active] = timers [timercnt + HEAP0];
2653 adjustheap (timers, timercnt, active); 4432 adjustheap (timers, timercnt, active);
2654 } 4433 }
2655 } 4434 }
… …
2659 ev_stop (EV_A_ (W)w); 4438 ev_stop (EV_A_ (W)w);
2660 4439
2661 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
2662} 4441}
2663 4442
2664void noinline 4443ecb_noinline
4444void
2665ev_timer_again (EV_P_ ev_timer *w) 4445ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2666{ 4446{
2667 EV_FREQUENT_CHECK; 4447 EV_FREQUENT_CHECK;
4448
4449 clear_pending (EV_A_ (W)w);
2668 4450
2669 if (ev_is_active (w)) 4451 if (ev_is_active (w))
2670 { 4452 {
2671 if (w->repeat) 4453 if (w->repeat)
2672 { 4454 {
… …
2685 4467
2686 EV_FREQUENT_CHECK; 4468 EV_FREQUENT_CHECK;
2687} 4469}
2688 4470
2689ev_tstamp 4471ev_tstamp
2690ev_timer_remaining (EV_P_ ev_timer *w) 4472ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2691{ 4473{
2692 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4474 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2693} 4475}
2694 4476
2695#if EV_PERIODIC_ENABLE 4477#if EV_PERIODIC_ENABLE
2696void noinline 4478ecb_noinline
4479void
2697ev_periodic_start (EV_P_ ev_periodic *w) 4480ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2698{ 4481{
2699 if (expect_false (ev_is_active (w))) 4482 if (ecb_expect_false (ev_is_active (w)))
2700 return; 4483 return;
4484
4485#if EV_USE_TIMERFD
4486 if (timerfd == -2)
4487 evtimerfd_init (EV_A);
4488#endif
2701 4489
2702 if (w->reschedule_cb) 4490 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4491 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 4492 else if (w->interval)
2705 { 4493 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4494 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 4495 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 4496 }
2710 else 4497 else
2711 ev_at (w) = w->offset; 4498 ev_at (w) = w->offset;
2712 4499
2713 EV_FREQUENT_CHECK; 4500 EV_FREQUENT_CHECK;
2714 4501
2715 ++periodiccnt; 4502 ++periodiccnt;
2716 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4503 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2717 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4504 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2718 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4505 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2719 ANHE_at_cache (periodics [ev_active (w)]); 4506 ANHE_at_cache (periodics [ev_active (w)]);
2720 upheap (periodics, ev_active (w)); 4507 upheap (periodics, ev_active (w));
2721 4508
2722 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
2723 4510
2724 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4511 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2725} 4512}
2726 4513
2727void noinline 4514ecb_noinline
4515void
2728ev_periodic_stop (EV_P_ ev_periodic *w) 4516ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2729{ 4517{
2730 clear_pending (EV_A_ (W)w); 4518 clear_pending (EV_A_ (W)w);
2731 if (expect_false (!ev_is_active (w))) 4519 if (ecb_expect_false (!ev_is_active (w)))
2732 return; 4520 return;
2733 4521
2734 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
2735 4523
2736 { 4524 {
… …
2738 4526
2739 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4527 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2740 4528
2741 --periodiccnt; 4529 --periodiccnt;
2742 4530
2743 if (expect_true (active < periodiccnt + HEAP0)) 4531 if (ecb_expect_true (active < periodiccnt + HEAP0))
2744 { 4532 {
2745 periodics [active] = periodics [periodiccnt + HEAP0]; 4533 periodics [active] = periodics [periodiccnt + HEAP0];
2746 adjustheap (periodics, periodiccnt, active); 4534 adjustheap (periodics, periodiccnt, active);
2747 } 4535 }
2748 } 4536 }
… …
2750 ev_stop (EV_A_ (W)w); 4538 ev_stop (EV_A_ (W)w);
2751 4539
2752 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
2753} 4541}
2754 4542
2755void noinline 4543ecb_noinline
4544void
2756ev_periodic_again (EV_P_ ev_periodic *w) 4545ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2757{ 4546{
2758 /* TODO: use adjustheap and recalculation */ 4547 /* TODO: use adjustheap and recalculation */
2759 ev_periodic_stop (EV_A_ w); 4548 ev_periodic_stop (EV_A_ w);
2760 ev_periodic_start (EV_A_ w); 4549 ev_periodic_start (EV_A_ w);
2761} 4550}
… …
2765# define SA_RESTART 0 4554# define SA_RESTART 0
2766#endif 4555#endif
2767 4556
2768#if EV_SIGNAL_ENABLE 4557#if EV_SIGNAL_ENABLE
2769 4558
2770void noinline 4559ecb_noinline
4560void
2771ev_signal_start (EV_P_ ev_signal *w) 4561ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2772{ 4562{
2773 if (expect_false (ev_is_active (w))) 4563 if (ecb_expect_false (ev_is_active (w)))
2774 return; 4564 return;
2775 4565
2776 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4566 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2777 4567
2778#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
2779 assert (("libev: a signal must not be attached to two different loops", 4569 assert (("libev: a signal must not be attached to two different loops",
2780 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4570 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2781 4571
2782 signals [w->signum - 1].loop = EV_A; 4572 signals [w->signum - 1].loop = EV_A;
4573 ECB_MEMORY_FENCE_RELEASE;
2783#endif 4574#endif
2784 4575
2785 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
2786 4577
2787#if EV_USE_SIGNALFD 4578#if EV_USE_SIGNALFD
… …
2834 sa.sa_handler = ev_sighandler; 4625 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 4626 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4627 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 4628 sigaction (w->signum, &sa, 0);
2838 4629
4630 if (origflags & EVFLAG_NOSIGMASK)
4631 {
2839 sigemptyset (&sa.sa_mask); 4632 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 4633 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4634 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4635 }
2842#endif 4636#endif
2843 } 4637 }
2844 4638
2845 EV_FREQUENT_CHECK; 4639 EV_FREQUENT_CHECK;
2846} 4640}
2847 4641
2848void noinline 4642ecb_noinline
4643void
2849ev_signal_stop (EV_P_ ev_signal *w) 4644ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2850{ 4645{
2851 clear_pending (EV_A_ (W)w); 4646 clear_pending (EV_A_ (W)w);
2852 if (expect_false (!ev_is_active (w))) 4647 if (ecb_expect_false (!ev_is_active (w)))
2853 return; 4648 return;
2854 4649
2855 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
2856 4651
2857 wlist_del (&signals [w->signum - 1].head, (WL)w); 4652 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2885#endif 4680#endif
2886 4681
2887#if EV_CHILD_ENABLE 4682#if EV_CHILD_ENABLE
2888 4683
2889void 4684void
2890ev_child_start (EV_P_ ev_child *w) 4685ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2891{ 4686{
2892#if EV_MULTIPLICITY 4687#if EV_MULTIPLICITY
2893 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4688 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2894#endif 4689#endif
2895 if (expect_false (ev_is_active (w))) 4690 if (ecb_expect_false (ev_is_active (w)))
2896 return; 4691 return;
2897 4692
2898 EV_FREQUENT_CHECK; 4693 EV_FREQUENT_CHECK;
2899 4694
2900 ev_start (EV_A_ (W)w, 1); 4695 ev_start (EV_A_ (W)w, 1);
… …
2902 4697
2903 EV_FREQUENT_CHECK; 4698 EV_FREQUENT_CHECK;
2904} 4699}
2905 4700
2906void 4701void
2907ev_child_stop (EV_P_ ev_child *w) 4702ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2908{ 4703{
2909 clear_pending (EV_A_ (W)w); 4704 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 4705 if (ecb_expect_false (!ev_is_active (w)))
2911 return; 4706 return;
2912 4707
2913 EV_FREQUENT_CHECK; 4708 EV_FREQUENT_CHECK;
2914 4709
2915 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4710 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2929 4724
2930#define DEF_STAT_INTERVAL 5.0074891 4725#define DEF_STAT_INTERVAL 5.0074891
2931#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4726#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2932#define MIN_STAT_INTERVAL 0.1074891 4727#define MIN_STAT_INTERVAL 0.1074891
2933 4728
2934static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4729ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2935 4730
2936#if EV_USE_INOTIFY 4731#if EV_USE_INOTIFY
2937 4732
2938/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4733/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2939# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4734# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2940 4735
2941static void noinline 4736ecb_noinline
4737static void
2942infy_add (EV_P_ ev_stat *w) 4738infy_add (EV_P_ ev_stat *w)
2943{ 4739{
2944 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4740 w->wd = inotify_add_watch (fs_fd, w->path,
4741 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4742 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4743 | IN_DONT_FOLLOW | IN_MASK_ADD);
2945 4744
2946 if (w->wd >= 0) 4745 if (w->wd >= 0)
2947 { 4746 {
2948 struct statfs sfs; 4747 struct statfs sfs;
2949 4748
… …
2953 4752
2954 if (!fs_2625) 4753 if (!fs_2625)
2955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4754 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2956 else if (!statfs (w->path, &sfs) 4755 else if (!statfs (w->path, &sfs)
2957 && (sfs.f_type == 0x1373 /* devfs */ 4756 && (sfs.f_type == 0x1373 /* devfs */
4757 || sfs.f_type == 0x4006 /* fat */
4758 || sfs.f_type == 0x4d44 /* msdos */
2958 || sfs.f_type == 0xEF53 /* ext2/3 */ 4759 || sfs.f_type == 0xEF53 /* ext2/3 */
4760 || sfs.f_type == 0x72b6 /* jffs2 */
4761 || sfs.f_type == 0x858458f6 /* ramfs */
4762 || sfs.f_type == 0x5346544e /* ntfs */
2959 || sfs.f_type == 0x3153464a /* jfs */ 4763 || sfs.f_type == 0x3153464a /* jfs */
4764 || sfs.f_type == 0x9123683e /* btrfs */
2960 || sfs.f_type == 0x52654973 /* reiser3 */ 4765 || sfs.f_type == 0x52654973 /* reiser3 */
2961 || sfs.f_type == 0x01021994 /* tempfs */ 4766 || sfs.f_type == 0x01021994 /* tmpfs */
2962 || sfs.f_type == 0x58465342 /* xfs */)) 4767 || sfs.f_type == 0x58465342 /* xfs */))
2963 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4768 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2964 else 4769 else
2965 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4770 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2966 } 4771 }
… …
2987 if (!pend || pend == path) 4792 if (!pend || pend == path)
2988 break; 4793 break;
2989 4794
2990 *pend = 0; 4795 *pend = 0;
2991 w->wd = inotify_add_watch (fs_fd, path, mask); 4796 w->wd = inotify_add_watch (fs_fd, path, mask);
2992 } 4797 }
2993 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4798 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2994 } 4799 }
2995 } 4800 }
2996 4801
2997 if (w->wd >= 0) 4802 if (w->wd >= 0)
… …
3001 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4806 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3002 ev_timer_again (EV_A_ &w->timer); 4807 ev_timer_again (EV_A_ &w->timer);
3003 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4808 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3004} 4809}
3005 4810
3006static void noinline 4811ecb_noinline
4812static void
3007infy_del (EV_P_ ev_stat *w) 4813infy_del (EV_P_ ev_stat *w)
3008{ 4814{
3009 int slot; 4815 int slot;
3010 int wd = w->wd; 4816 int wd = w->wd;
3011 4817
… …
3018 4824
3019 /* remove this watcher, if others are watching it, they will rearm */ 4825 /* remove this watcher, if others are watching it, they will rearm */
3020 inotify_rm_watch (fs_fd, wd); 4826 inotify_rm_watch (fs_fd, wd);
3021} 4827}
3022 4828
3023static void noinline 4829ecb_noinline
4830static void
3024infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3025{ 4832{
3026 if (slot < 0) 4833 if (slot < 0)
3027 /* overflow, need to check for all hash slots */ 4834 /* overflow, need to check for all hash slots */
3028 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4835 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4871 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 4872 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 4873 }
3067} 4874}
3068 4875
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099}
3100
3101inline_size void 4876inline_size ecb_cold
4877void
3102ev_check_2625 (EV_P) 4878ev_check_2625 (EV_P)
3103{ 4879{
3104 /* kernels < 2.6.25 are borked 4880 /* kernels < 2.6.25 are borked
3105 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4881 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106 */ 4882 */
… …
3111} 4887}
3112 4888
3113inline_size int 4889inline_size int
3114infy_newfd (void) 4890infy_newfd (void)
3115{ 4891{
3116#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4892#if defined IN_CLOEXEC && defined IN_NONBLOCK
3117 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4893 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3118 if (fd >= 0) 4894 if (fd >= 0)
3119 return fd; 4895 return fd;
3120#endif 4896#endif
3121 return inotify_init (); 4897 return inotify_init ();
… …
3196#else 4972#else
3197# define EV_LSTAT(p,b) lstat (p, b) 4973# define EV_LSTAT(p,b) lstat (p, b)
3198#endif 4974#endif
3199 4975
3200void 4976void
3201ev_stat_stat (EV_P_ ev_stat *w) 4977ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3202{ 4978{
3203 if (lstat (w->path, &w->attr) < 0) 4979 if (lstat (w->path, &w->attr) < 0)
3204 w->attr.st_nlink = 0; 4980 w->attr.st_nlink = 0;
3205 else if (!w->attr.st_nlink) 4981 else if (!w->attr.st_nlink)
3206 w->attr.st_nlink = 1; 4982 w->attr.st_nlink = 1;
3207} 4983}
3208 4984
3209static void noinline 4985ecb_noinline
4986static void
3210stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4987stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3211{ 4988{
3212 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4989 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3213 4990
3214 ev_statdata prev = w->attr; 4991 ev_statdata prev = w->attr;
… …
3245 ev_feed_event (EV_A_ w, EV_STAT); 5022 ev_feed_event (EV_A_ w, EV_STAT);
3246 } 5023 }
3247} 5024}
3248 5025
3249void 5026void
3250ev_stat_start (EV_P_ ev_stat *w) 5027ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3251{ 5028{
3252 if (expect_false (ev_is_active (w))) 5029 if (ecb_expect_false (ev_is_active (w)))
3253 return; 5030 return;
3254 5031
3255 ev_stat_stat (EV_A_ w); 5032 ev_stat_stat (EV_A_ w);
3256 5033
3257 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5034 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3276 5053
3277 EV_FREQUENT_CHECK; 5054 EV_FREQUENT_CHECK;
3278} 5055}
3279 5056
3280void 5057void
3281ev_stat_stop (EV_P_ ev_stat *w) 5058ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3282{ 5059{
3283 clear_pending (EV_A_ (W)w); 5060 clear_pending (EV_A_ (W)w);
3284 if (expect_false (!ev_is_active (w))) 5061 if (ecb_expect_false (!ev_is_active (w)))
3285 return; 5062 return;
3286 5063
3287 EV_FREQUENT_CHECK; 5064 EV_FREQUENT_CHECK;
3288 5065
3289#if EV_USE_INOTIFY 5066#if EV_USE_INOTIFY
… …
3302} 5079}
3303#endif 5080#endif
3304 5081
3305#if EV_IDLE_ENABLE 5082#if EV_IDLE_ENABLE
3306void 5083void
3307ev_idle_start (EV_P_ ev_idle *w) 5084ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3308{ 5085{
3309 if (expect_false (ev_is_active (w))) 5086 if (ecb_expect_false (ev_is_active (w)))
3310 return; 5087 return;
3311 5088
3312 pri_adjust (EV_A_ (W)w); 5089 pri_adjust (EV_A_ (W)w);
3313 5090
3314 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
… …
3317 int active = ++idlecnt [ABSPRI (w)]; 5094 int active = ++idlecnt [ABSPRI (w)];
3318 5095
3319 ++idleall; 5096 ++idleall;
3320 ev_start (EV_A_ (W)w, active); 5097 ev_start (EV_A_ (W)w, active);
3321 5098
3322 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5099 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3323 idles [ABSPRI (w)][active - 1] = w; 5100 idles [ABSPRI (w)][active - 1] = w;
3324 } 5101 }
3325 5102
3326 EV_FREQUENT_CHECK; 5103 EV_FREQUENT_CHECK;
3327} 5104}
3328 5105
3329void 5106void
3330ev_idle_stop (EV_P_ ev_idle *w) 5107ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3331{ 5108{
3332 clear_pending (EV_A_ (W)w); 5109 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 5110 if (ecb_expect_false (!ev_is_active (w)))
3334 return; 5111 return;
3335 5112
3336 EV_FREQUENT_CHECK; 5113 EV_FREQUENT_CHECK;
3337 5114
3338 { 5115 {
… …
3349} 5126}
3350#endif 5127#endif
3351 5128
3352#if EV_PREPARE_ENABLE 5129#if EV_PREPARE_ENABLE
3353void 5130void
3354ev_prepare_start (EV_P_ ev_prepare *w) 5131ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3355{ 5132{
3356 if (expect_false (ev_is_active (w))) 5133 if (ecb_expect_false (ev_is_active (w)))
3357 return; 5134 return;
3358 5135
3359 EV_FREQUENT_CHECK; 5136 EV_FREQUENT_CHECK;
3360 5137
3361 ev_start (EV_A_ (W)w, ++preparecnt); 5138 ev_start (EV_A_ (W)w, ++preparecnt);
3362 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5139 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3363 prepares [preparecnt - 1] = w; 5140 prepares [preparecnt - 1] = w;
3364 5141
3365 EV_FREQUENT_CHECK; 5142 EV_FREQUENT_CHECK;
3366} 5143}
3367 5144
3368void 5145void
3369ev_prepare_stop (EV_P_ ev_prepare *w) 5146ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3370{ 5147{
3371 clear_pending (EV_A_ (W)w); 5148 clear_pending (EV_A_ (W)w);
3372 if (expect_false (!ev_is_active (w))) 5149 if (ecb_expect_false (!ev_is_active (w)))
3373 return; 5150 return;
3374 5151
3375 EV_FREQUENT_CHECK; 5152 EV_FREQUENT_CHECK;
3376 5153
3377 { 5154 {
… …
3387} 5164}
3388#endif 5165#endif
3389 5166
3390#if EV_CHECK_ENABLE 5167#if EV_CHECK_ENABLE
3391void 5168void
3392ev_check_start (EV_P_ ev_check *w) 5169ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3393{ 5170{
3394 if (expect_false (ev_is_active (w))) 5171 if (ecb_expect_false (ev_is_active (w)))
3395 return; 5172 return;
3396 5173
3397 EV_FREQUENT_CHECK; 5174 EV_FREQUENT_CHECK;
3398 5175
3399 ev_start (EV_A_ (W)w, ++checkcnt); 5176 ev_start (EV_A_ (W)w, ++checkcnt);
3400 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5177 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3401 checks [checkcnt - 1] = w; 5178 checks [checkcnt - 1] = w;
3402 5179
3403 EV_FREQUENT_CHECK; 5180 EV_FREQUENT_CHECK;
3404} 5181}
3405 5182
3406void 5183void
3407ev_check_stop (EV_P_ ev_check *w) 5184ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3408{ 5185{
3409 clear_pending (EV_A_ (W)w); 5186 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 5187 if (ecb_expect_false (!ev_is_active (w)))
3411 return; 5188 return;
3412 5189
3413 EV_FREQUENT_CHECK; 5190 EV_FREQUENT_CHECK;
3414 5191
3415 { 5192 {
… …
3424 EV_FREQUENT_CHECK; 5201 EV_FREQUENT_CHECK;
3425} 5202}
3426#endif 5203#endif
3427 5204
3428#if EV_EMBED_ENABLE 5205#if EV_EMBED_ENABLE
3429void noinline 5206ecb_noinline
5207void
3430ev_embed_sweep (EV_P_ ev_embed *w) 5208ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3431{ 5209{
3432 ev_run (w->other, EVRUN_NOWAIT); 5210 ev_run (w->other, EVRUN_NOWAIT);
3433} 5211}
3434 5212
3435static void 5213static void
… …
3457 ev_run (EV_A_ EVRUN_NOWAIT); 5235 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 5236 }
3459 } 5237 }
3460} 5238}
3461 5239
5240#if EV_FORK_ENABLE
3462static void 5241static void
3463embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5242embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3464{ 5243{
3465 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5244 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3466 5245
… …
3473 ev_run (EV_A_ EVRUN_NOWAIT); 5252 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 5253 }
3475 5254
3476 ev_embed_start (EV_A_ w); 5255 ev_embed_start (EV_A_ w);
3477} 5256}
5257#endif
3478 5258
3479#if 0 5259#if 0
3480static void 5260static void
3481embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5261embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3482{ 5262{
3483 ev_idle_stop (EV_A_ idle); 5263 ev_idle_stop (EV_A_ idle);
3484} 5264}
3485#endif 5265#endif
3486 5266
3487void 5267void
3488ev_embed_start (EV_P_ ev_embed *w) 5268ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3489{ 5269{
3490 if (expect_false (ev_is_active (w))) 5270 if (ecb_expect_false (ev_is_active (w)))
3491 return; 5271 return;
3492 5272
3493 { 5273 {
3494 EV_P = w->other; 5274 EV_P = w->other;
3495 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5275 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3503 5283
3504 ev_prepare_init (&w->prepare, embed_prepare_cb); 5284 ev_prepare_init (&w->prepare, embed_prepare_cb);
3505 ev_set_priority (&w->prepare, EV_MINPRI); 5285 ev_set_priority (&w->prepare, EV_MINPRI);
3506 ev_prepare_start (EV_A_ &w->prepare); 5286 ev_prepare_start (EV_A_ &w->prepare);
3507 5287
5288#if EV_FORK_ENABLE
3508 ev_fork_init (&w->fork, embed_fork_cb); 5289 ev_fork_init (&w->fork, embed_fork_cb);
3509 ev_fork_start (EV_A_ &w->fork); 5290 ev_fork_start (EV_A_ &w->fork);
5291#endif
3510 5292
3511 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5293 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3512 5294
3513 ev_start (EV_A_ (W)w, 1); 5295 ev_start (EV_A_ (W)w, 1);
3514 5296
3515 EV_FREQUENT_CHECK; 5297 EV_FREQUENT_CHECK;
3516} 5298}
3517 5299
3518void 5300void
3519ev_embed_stop (EV_P_ ev_embed *w) 5301ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3520{ 5302{
3521 clear_pending (EV_A_ (W)w); 5303 clear_pending (EV_A_ (W)w);
3522 if (expect_false (!ev_is_active (w))) 5304 if (ecb_expect_false (!ev_is_active (w)))
3523 return; 5305 return;
3524 5306
3525 EV_FREQUENT_CHECK; 5307 EV_FREQUENT_CHECK;
3526 5308
3527 ev_io_stop (EV_A_ &w->io); 5309 ev_io_stop (EV_A_ &w->io);
3528 ev_prepare_stop (EV_A_ &w->prepare); 5310 ev_prepare_stop (EV_A_ &w->prepare);
5311#if EV_FORK_ENABLE
3529 ev_fork_stop (EV_A_ &w->fork); 5312 ev_fork_stop (EV_A_ &w->fork);
5313#endif
3530 5314
3531 ev_stop (EV_A_ (W)w); 5315 ev_stop (EV_A_ (W)w);
3532 5316
3533 EV_FREQUENT_CHECK; 5317 EV_FREQUENT_CHECK;
3534} 5318}
3535#endif 5319#endif
3536 5320
3537#if EV_FORK_ENABLE 5321#if EV_FORK_ENABLE
3538void 5322void
3539ev_fork_start (EV_P_ ev_fork *w) 5323ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3540{ 5324{
3541 if (expect_false (ev_is_active (w))) 5325 if (ecb_expect_false (ev_is_active (w)))
3542 return; 5326 return;
3543 5327
3544 EV_FREQUENT_CHECK; 5328 EV_FREQUENT_CHECK;
3545 5329
3546 ev_start (EV_A_ (W)w, ++forkcnt); 5330 ev_start (EV_A_ (W)w, ++forkcnt);
3547 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5331 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3548 forks [forkcnt - 1] = w; 5332 forks [forkcnt - 1] = w;
3549 5333
3550 EV_FREQUENT_CHECK; 5334 EV_FREQUENT_CHECK;
3551} 5335}
3552 5336
3553void 5337void
3554ev_fork_stop (EV_P_ ev_fork *w) 5338ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3555{ 5339{
3556 clear_pending (EV_A_ (W)w); 5340 clear_pending (EV_A_ (W)w);
3557 if (expect_false (!ev_is_active (w))) 5341 if (ecb_expect_false (!ev_is_active (w)))
3558 return; 5342 return;
3559 5343
3560 EV_FREQUENT_CHECK; 5344 EV_FREQUENT_CHECK;
3561 5345
3562 { 5346 {
… …
3570 5354
3571 EV_FREQUENT_CHECK; 5355 EV_FREQUENT_CHECK;
3572} 5356}
3573#endif 5357#endif
3574 5358
5359#if EV_CLEANUP_ENABLE
5360void
5361ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5362{
5363 if (ecb_expect_false (ev_is_active (w)))
5364 return;
5365
5366 EV_FREQUENT_CHECK;
5367
5368 ev_start (EV_A_ (W)w, ++cleanupcnt);
5369 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5370 cleanups [cleanupcnt - 1] = w;
5371
5372 /* cleanup watchers should never keep a refcount on the loop */
5373 ev_unref (EV_A);
5374 EV_FREQUENT_CHECK;
5375}
5376
5377void
5378ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5379{
5380 clear_pending (EV_A_ (W)w);
5381 if (ecb_expect_false (!ev_is_active (w)))
5382 return;
5383
5384 EV_FREQUENT_CHECK;
5385 ev_ref (EV_A);
5386
5387 {
5388 int active = ev_active (w);
5389
5390 cleanups [active - 1] = cleanups [--cleanupcnt];
5391 ev_active (cleanups [active - 1]) = active;
5392 }
5393
5394 ev_stop (EV_A_ (W)w);
5395
5396 EV_FREQUENT_CHECK;
5397}
5398#endif
5399
3575#if EV_ASYNC_ENABLE 5400#if EV_ASYNC_ENABLE
3576void 5401void
3577ev_async_start (EV_P_ ev_async *w) 5402ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3578{ 5403{
3579 if (expect_false (ev_is_active (w))) 5404 if (ecb_expect_false (ev_is_active (w)))
3580 return; 5405 return;
3581 5406
3582 w->sent = 0; 5407 w->sent = 0;
3583 5408
3584 evpipe_init (EV_A); 5409 evpipe_init (EV_A);
3585 5410
3586 EV_FREQUENT_CHECK; 5411 EV_FREQUENT_CHECK;
3587 5412
3588 ev_start (EV_A_ (W)w, ++asynccnt); 5413 ev_start (EV_A_ (W)w, ++asynccnt);
3589 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5414 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3590 asyncs [asynccnt - 1] = w; 5415 asyncs [asynccnt - 1] = w;
3591 5416
3592 EV_FREQUENT_CHECK; 5417 EV_FREQUENT_CHECK;
3593} 5418}
3594 5419
3595void 5420void
3596ev_async_stop (EV_P_ ev_async *w) 5421ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3597{ 5422{
3598 clear_pending (EV_A_ (W)w); 5423 clear_pending (EV_A_ (W)w);
3599 if (expect_false (!ev_is_active (w))) 5424 if (ecb_expect_false (!ev_is_active (w)))
3600 return; 5425 return;
3601 5426
3602 EV_FREQUENT_CHECK; 5427 EV_FREQUENT_CHECK;
3603 5428
3604 { 5429 {
… …
3612 5437
3613 EV_FREQUENT_CHECK; 5438 EV_FREQUENT_CHECK;
3614} 5439}
3615 5440
3616void 5441void
3617ev_async_send (EV_P_ ev_async *w) 5442ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3618{ 5443{
3619 w->sent = 1; 5444 w->sent = 1;
3620 evpipe_write (EV_A_ &async_pending); 5445 evpipe_write (EV_A_ &async_pending);
3621} 5446}
3622#endif 5447#endif
… …
3659 5484
3660 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5485 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3661} 5486}
3662 5487
3663void 5488void
3664ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5489ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3665{ 5490{
3666 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5491 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3667
3668 if (expect_false (!once))
3669 {
3670 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3671 return;
3672 }
3673 5492
3674 once->cb = cb; 5493 once->cb = cb;
3675 once->arg = arg; 5494 once->arg = arg;
3676 5495
3677 ev_init (&once->io, once_cb_io); 5496 ev_init (&once->io, once_cb_io);
… …
3690} 5509}
3691 5510
3692/*****************************************************************************/ 5511/*****************************************************************************/
3693 5512
3694#if EV_WALK_ENABLE 5513#if EV_WALK_ENABLE
5514ecb_cold
3695void 5515void
3696ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5516ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3697{ 5517{
3698 int i, j; 5518 int i, j;
3699 ev_watcher_list *wl, *wn; 5519 ev_watcher_list *wl, *wn;
3700 5520
3701 if (types & (EV_IO | EV_EMBED)) 5521 if (types & (EV_IO | EV_EMBED))
… …
3744 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5564 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3745#endif 5565#endif
3746 5566
3747#if EV_IDLE_ENABLE 5567#if EV_IDLE_ENABLE
3748 if (types & EV_IDLE) 5568 if (types & EV_IDLE)
3749 for (j = NUMPRI; i--; ) 5569 for (j = NUMPRI; j--; )
3750 for (i = idlecnt [j]; i--; ) 5570 for (i = idlecnt [j]; i--; )
3751 cb (EV_A_ EV_IDLE, idles [j][i]); 5571 cb (EV_A_ EV_IDLE, idles [j][i]);
3752#endif 5572#endif
3753 5573
3754#if EV_FORK_ENABLE 5574#if EV_FORK_ENABLE
… …
3807 5627
3808#if EV_MULTIPLICITY 5628#if EV_MULTIPLICITY
3809 #include "ev_wrap.h" 5629 #include "ev_wrap.h"
3810#endif 5630#endif
3811 5631
3812#ifdef __cplusplus
3813}
3814#endif
3815

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