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Comparing libev/ev.c (file contents):
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs.
Revision 1.518 by root, Fri Dec 27 16:12:37 2019 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# endif 52# endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
113# else 115# else
114# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
115# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
116# endif 118# endif
117 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
118# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
119# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
120# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
121# endif 141# endif
122# else 142# else
… …
157# endif 177# endif
158# else 178# else
159# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
160# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
161# endif 181# endif
162 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
163#endif 190# endif
164 191
165#include <math.h> 192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
203
166#include <stdlib.h> 204#include <stdlib.h>
167#include <string.h> 205#include <string.h>
168#include <fcntl.h> 206#include <fcntl.h>
169#include <stddef.h> 207#include <stddef.h>
170 208
… …
180 218
181#ifdef EV_H 219#ifdef EV_H
182# include EV_H 220# include EV_H
183#else 221#else
184# include "ev.h" 222# include "ev.h"
223#endif
224
225#if EV_NO_THREADS
226# undef EV_NO_SMP
227# define EV_NO_SMP 1
228# undef ECB_NO_THREADS
229# define ECB_NO_THREADS 1
230#endif
231#if EV_NO_SMP
232# undef EV_NO_SMP
233# define ECB_NO_SMP 1
185#endif 234#endif
186 235
187#ifndef _WIN32 236#ifndef _WIN32
188# include <sys/time.h> 237# include <sys/time.h>
189# include <sys/wait.h> 238# include <sys/wait.h>
190# include <unistd.h> 239# include <unistd.h>
191#else 240#else
192# include <io.h> 241# include <io.h>
193# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
194# include <windows.h> 244# include <windows.h>
195# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
197# endif 247# endif
198# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
199#endif 249#endif
200 250
201/* OS X, in its infinite idiocy, actually HARDCODES
202 * a limit of 1024 into their select. Where people have brains,
203 * OS X engineers apparently have a vacuum. Or maybe they were
204 * ordered to have a vacuum, or they do anything for money.
205 * This might help. Or not.
206 */
207#define _DARWIN_UNLIMITED_SELECT 1
208
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
210 252
211/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 254#if defined EV_NSIG
213/* use what's provided */ 255/* use what's provided */
214#elif defined (NSIG) 256#elif defined NSIG
215# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 258#elif defined _NSIG
217# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 260#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 262#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 266#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 268#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 272#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 274#else
233# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
234/* to make it compile regardless, just remove the above line, */ 276#endif
235/* but consider reporting it, too! :) */ 277
236# define EV_NSIG 65 278#ifndef EV_USE_FLOOR
279# define EV_USE_FLOOR 0
237#endif 280#endif
238 281
239#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 285# else
243# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
244# endif 287# endif
245#endif 288#endif
246 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
247#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 302# else
251# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
252# endif 304# endif
253#endif 305#endif
… …
290 342
291#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
292# define EV_USE_PORT 0 344# define EV_USE_PORT 0
293#endif 345#endif
294 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
295#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
297# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
298# else 366# else
299# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
322# else 390# else
323# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
324# endif 392# endif
325#endif 393#endif
326 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
327#if 0 /* debugging */ 403#if 0 /* debugging */
328# define EV_VERIFY 3 404# define EV_VERIFY 3
329# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
330# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
331#endif 407#endif
… …
340 416
341#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
342# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
343#endif 419#endif
344 420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
345/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
346/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
347#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
348# include <syscall.h> 440# include <sys/syscall.h>
349# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
350# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
351# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
352# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
353# else 446# else
354# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
355# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
356# endif 449# endif
357#endif 450#endif
358 451
359/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
360 453
361#ifdef _AIX
362/* AIX has a completely broken poll.h header */
363# undef EV_USE_POLL
364# define EV_USE_POLL 0
365#endif
366
367#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
368# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
370#endif 457#endif
371 458
… …
377#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
378# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
380#endif 467#endif
381 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
382#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
479# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 480# include <sys/select.h>
385# endif 481# endif
386#endif 482#endif
387 483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
506# endif
507#endif
508
388#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 510# include <sys/statfs.h>
391# include <sys/inotify.h> 511# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 512/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 513# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
396# endif 516# endif
397#endif 517#endif
398 518
399#if EV_SELECT_IS_WINSOCKET
400# include <winsock.h>
401#endif
402
403#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
404/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
405# include <stdint.h> 521# include <stdint.h>
406# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
407# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
408# endif 524# endif
409# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
411# define EFD_CLOEXEC O_CLOEXEC 527# define EFD_CLOEXEC O_CLOEXEC
412# else 528# else
413# define EFD_CLOEXEC 02000000 529# define EFD_CLOEXEC 02000000
414# endif 530# endif
415# endif 531# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 533#endif
424 534
425#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
427# include <stdint.h> 537# include <stdint.h>
428# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
429# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
430# endif 540# endif
431# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
433# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
434# else 544# else
435# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
436# endif 546# endif
437# endif 547# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
442 549
443struct signalfd_siginfo 550struct signalfd_siginfo
444{ 551{
445 uint32_t ssi_signo; 552 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
447}; 554};
448# ifdef __cplusplus 555#endif
449} 556
557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
450# endif 564# endif
451#endif 565#endif
452 566
453 567/*****************************************************************************/
454/**/
455 568
456#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 571#else
459# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
460#endif 573#endif
461 574
462/* 575/*
463 * This is used to avoid floating point rounding problems. 576 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 578 */
470#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 */
471 581
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 584
585/* find a portable timestamp that is "always" in the future but fits into time_t.
586 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
587 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
588#define EV_TSTAMP_HUGE \
589 (sizeof (time_t) >= 8 ? 10000000000000. \
590 : 0 < (time_t)4294967295 ? 4294967295. \
591 : 2147483647.) \
592
593#ifndef EV_TS_CONST
594# define EV_TS_CONST(nv) nv
595# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
596# define EV_TS_FROM_USEC(us) us * 1e-6
597# 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_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
599# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
600# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
601#endif
602
603/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
604/* ECB.H BEGIN */
605/*
606 * libecb - http://software.schmorp.de/pkg/libecb
607 *
608 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
609 * Copyright (©) 2011 Emanuele Giaquinta
610 * All rights reserved.
611 *
612 * Redistribution and use in source and binary forms, with or without modifica-
613 * tion, are permitted provided that the following conditions are met:
614 *
615 * 1. Redistributions of source code must retain the above copyright notice,
616 * this list of conditions and the following disclaimer.
617 *
618 * 2. Redistributions in binary form must reproduce the above copyright
619 * notice, this list of conditions and the following disclaimer in the
620 * documentation and/or other materials provided with the distribution.
621 *
622 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
623 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
624 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
625 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
626 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
627 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
628 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
629 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
630 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
631 * OF THE POSSIBILITY OF SUCH DAMAGE.
632 *
633 * Alternatively, the contents of this file may be used under the terms of
634 * the GNU General Public License ("GPL") version 2 or any later version,
635 * in which case the provisions of the GPL are applicable instead of
636 * the above. If you wish to allow the use of your version of this file
637 * only under the terms of the GPL and not to allow others to use your
638 * version of this file under the BSD license, indicate your decision
639 * by deleting the provisions above and replace them with the notice
640 * and other provisions required by the GPL. If you do not delete the
641 * provisions above, a recipient may use your version of this file under
642 * either the BSD or the GPL.
643 */
644
645#ifndef ECB_H
646#define ECB_H
647
648/* 16 bits major, 16 bits minor */
649#define ECB_VERSION 0x00010006
650
651#ifdef _WIN32
652 typedef signed char int8_t;
653 typedef unsigned char uint8_t;
654 typedef signed short int16_t;
655 typedef unsigned short uint16_t;
656 typedef signed int int32_t;
657 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 658 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 659 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 660 typedef unsigned long long uint64_t;
661 #else /* _MSC_VER || __BORLANDC__ */
662 typedef signed __int64 int64_t;
663 typedef unsigned __int64 uint64_t;
664 #endif
665 #ifdef _WIN64
666 #define ECB_PTRSIZE 8
667 typedef uint64_t uintptr_t;
668 typedef int64_t intptr_t;
669 #else
670 #define ECB_PTRSIZE 4
671 typedef uint32_t uintptr_t;
672 typedef int32_t intptr_t;
673 #endif
478#else 674#else
479# define expect(expr,value) (expr) 675 #include <inttypes.h>
480# define noinline 676 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 677 #define ECB_PTRSIZE 8
482# define inline 678 #else
679 #define ECB_PTRSIZE 4
680 #endif
483# endif 681#endif
682
683#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
684#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
685
686/* work around x32 idiocy by defining proper macros */
687#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
688 #if _ILP32
689 #define ECB_AMD64_X32 1
690 #else
691 #define ECB_AMD64 1
484#endif 692 #endif
693#endif
485 694
695/* many compilers define _GNUC_ to some versions but then only implement
696 * what their idiot authors think are the "more important" extensions,
697 * causing enormous grief in return for some better fake benchmark numbers.
698 * or so.
699 * we try to detect these and simply assume they are not gcc - if they have
700 * an issue with that they should have done it right in the first place.
701 */
702#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
703 #define ECB_GCC_VERSION(major,minor) 0
704#else
705 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
706#endif
707
708#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
709
710#if __clang__ && defined __has_builtin
711 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
712#else
713 #define ECB_CLANG_BUILTIN(x) 0
714#endif
715
716#if __clang__ && defined __has_extension
717 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
718#else
719 #define ECB_CLANG_EXTENSION(x) 0
720#endif
721
722#define ECB_CPP (__cplusplus+0)
723#define ECB_CPP11 (__cplusplus >= 201103L)
724#define ECB_CPP14 (__cplusplus >= 201402L)
725#define ECB_CPP17 (__cplusplus >= 201703L)
726
727#if ECB_CPP
728 #define ECB_C 0
729 #define ECB_STDC_VERSION 0
730#else
731 #define ECB_C 1
732 #define ECB_STDC_VERSION __STDC_VERSION__
733#endif
734
735#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
736#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
737#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
738
739#if ECB_CPP
740 #define ECB_EXTERN_C extern "C"
741 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
742 #define ECB_EXTERN_C_END }
743#else
744 #define ECB_EXTERN_C extern
745 #define ECB_EXTERN_C_BEG
746 #define ECB_EXTERN_C_END
747#endif
748
749/*****************************************************************************/
750
751/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
752/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
753
754#if ECB_NO_THREADS
755 #define ECB_NO_SMP 1
756#endif
757
758#if ECB_NO_SMP
759 #define ECB_MEMORY_FENCE do { } while (0)
760#endif
761
762/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
763#if __xlC__ && ECB_CPP
764 #include <builtins.h>
765#endif
766
767#if 1400 <= _MSC_VER
768 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
769#endif
770
771#ifndef ECB_MEMORY_FENCE
772 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
773 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
774 #if __i386 || __i386__
775 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
776 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
777 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
778 #elif ECB_GCC_AMD64
779 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
780 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
781 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
782 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
783 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
784 #elif defined __ARM_ARCH_2__ \
785 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
786 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
787 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
788 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
789 || defined __ARM_ARCH_5TEJ__
790 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
791 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
792 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
793 || defined __ARM_ARCH_6T2__
794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
795 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
796 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
797 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
798 #elif __aarch64__
799 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
800 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
801 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
802 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
803 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
804 #elif defined __s390__ || defined __s390x__
805 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
806 #elif defined __mips__
807 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
808 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
809 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
810 #elif defined __alpha__
811 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
812 #elif defined __hppa__
813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
814 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
815 #elif defined __ia64__
816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
817 #elif defined __m68k__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
819 #elif defined __m88k__
820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
821 #elif defined __sh__
822 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
823 #endif
824 #endif
825#endif
826
827#ifndef ECB_MEMORY_FENCE
828 #if ECB_GCC_VERSION(4,7)
829 /* see comment below (stdatomic.h) about the C11 memory model. */
830 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
831 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
832 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
833 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
834
835 #elif ECB_CLANG_EXTENSION(c_atomic)
836 /* see comment below (stdatomic.h) about the C11 memory model. */
837 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
838 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
839 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
840 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
841
842 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
843 #define ECB_MEMORY_FENCE __sync_synchronize ()
844 #elif _MSC_VER >= 1500 /* VC++ 2008 */
845 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
846 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
847 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
848 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
849 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
850 #elif _MSC_VER >= 1400 /* VC++ 2005 */
851 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
852 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
853 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
854 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
855 #elif defined _WIN32
856 #include <WinNT.h>
857 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
858 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
859 #include <mbarrier.h>
860 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
861 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
862 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
863 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
864 #elif __xlC__
865 #define ECB_MEMORY_FENCE __sync ()
866 #endif
867#endif
868
869#ifndef ECB_MEMORY_FENCE
870 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
871 /* we assume that these memory fences work on all variables/all memory accesses, */
872 /* not just C11 atomics and atomic accesses */
873 #include <stdatomic.h>
874 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
875 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
876 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
877 #endif
878#endif
879
880#ifndef ECB_MEMORY_FENCE
881 #if !ECB_AVOID_PTHREADS
882 /*
883 * if you get undefined symbol references to pthread_mutex_lock,
884 * or failure to find pthread.h, then you should implement
885 * the ECB_MEMORY_FENCE operations for your cpu/compiler
886 * OR provide pthread.h and link against the posix thread library
887 * of your system.
888 */
889 #include <pthread.h>
890 #define ECB_NEEDS_PTHREADS 1
891 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
892
893 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
894 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
895 #endif
896#endif
897
898#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
899 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
900#endif
901
902#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
903 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
904#endif
905
906#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
907 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
908#endif
909
910/*****************************************************************************/
911
912#if ECB_CPP
913 #define ecb_inline static inline
914#elif ECB_GCC_VERSION(2,5)
915 #define ecb_inline static __inline__
916#elif ECB_C99
917 #define ecb_inline static inline
918#else
919 #define ecb_inline static
920#endif
921
922#if ECB_GCC_VERSION(3,3)
923 #define ecb_restrict __restrict__
924#elif ECB_C99
925 #define ecb_restrict restrict
926#else
927 #define ecb_restrict
928#endif
929
930typedef int ecb_bool;
931
932#define ECB_CONCAT_(a, b) a ## b
933#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
934#define ECB_STRINGIFY_(a) # a
935#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
936#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
937
938#define ecb_function_ ecb_inline
939
940#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
941 #define ecb_attribute(attrlist) __attribute__ (attrlist)
942#else
943 #define ecb_attribute(attrlist)
944#endif
945
946#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
947 #define ecb_is_constant(expr) __builtin_constant_p (expr)
948#else
949 /* possible C11 impl for integral types
950 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
951 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
952
953 #define ecb_is_constant(expr) 0
954#endif
955
956#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
957 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
958#else
959 #define ecb_expect(expr,value) (expr)
960#endif
961
962#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
963 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
964#else
965 #define ecb_prefetch(addr,rw,locality)
966#endif
967
968/* no emulation for ecb_decltype */
969#if ECB_CPP11
970 // older implementations might have problems with decltype(x)::type, work around it
971 template<class T> struct ecb_decltype_t { typedef T type; };
972 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
973#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
974 #define ecb_decltype(x) __typeof__ (x)
975#endif
976
977#if _MSC_VER >= 1300
978 #define ecb_deprecated __declspec (deprecated)
979#else
980 #define ecb_deprecated ecb_attribute ((__deprecated__))
981#endif
982
983#if _MSC_VER >= 1500
984 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
985#elif ECB_GCC_VERSION(4,5)
986 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
987#else
988 #define ecb_deprecated_message(msg) ecb_deprecated
989#endif
990
991#if _MSC_VER >= 1400
992 #define ecb_noinline __declspec (noinline)
993#else
994 #define ecb_noinline ecb_attribute ((__noinline__))
995#endif
996
997#define ecb_unused ecb_attribute ((__unused__))
998#define ecb_const ecb_attribute ((__const__))
999#define ecb_pure ecb_attribute ((__pure__))
1000
1001#if ECB_C11 || __IBMC_NORETURN
1002 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1003 #define ecb_noreturn _Noreturn
1004#elif ECB_CPP11
1005 #define ecb_noreturn [[noreturn]]
1006#elif _MSC_VER >= 1200
1007 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1008 #define ecb_noreturn __declspec (noreturn)
1009#else
1010 #define ecb_noreturn ecb_attribute ((__noreturn__))
1011#endif
1012
1013#if ECB_GCC_VERSION(4,3)
1014 #define ecb_artificial ecb_attribute ((__artificial__))
1015 #define ecb_hot ecb_attribute ((__hot__))
1016 #define ecb_cold ecb_attribute ((__cold__))
1017#else
1018 #define ecb_artificial
1019 #define ecb_hot
1020 #define ecb_cold
1021#endif
1022
1023/* put around conditional expressions if you are very sure that the */
1024/* expression is mostly true or mostly false. note that these return */
1025/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 1026#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 1027#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
1028/* for compatibility to the rest of the world */
1029#define ecb_likely(expr) ecb_expect_true (expr)
1030#define ecb_unlikely(expr) ecb_expect_false (expr)
1031
1032/* count trailing zero bits and count # of one bits */
1033#if ECB_GCC_VERSION(3,4) \
1034 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1035 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1036 && ECB_CLANG_BUILTIN(__builtin_popcount))
1037 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
1038 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
1039 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
1040 #define ecb_ctz32(x) __builtin_ctz (x)
1041 #define ecb_ctz64(x) __builtin_ctzll (x)
1042 #define ecb_popcount32(x) __builtin_popcount (x)
1043 /* no popcountll */
1044#else
1045 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
1046 ecb_function_ ecb_const int
1047 ecb_ctz32 (uint32_t x)
1048 {
1049#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1050 unsigned long r;
1051 _BitScanForward (&r, x);
1052 return (int)r;
1053#else
1054 int r = 0;
1055
1056 x &= ~x + 1; /* this isolates the lowest bit */
1057
1058#if ECB_branchless_on_i386
1059 r += !!(x & 0xaaaaaaaa) << 0;
1060 r += !!(x & 0xcccccccc) << 1;
1061 r += !!(x & 0xf0f0f0f0) << 2;
1062 r += !!(x & 0xff00ff00) << 3;
1063 r += !!(x & 0xffff0000) << 4;
1064#else
1065 if (x & 0xaaaaaaaa) r += 1;
1066 if (x & 0xcccccccc) r += 2;
1067 if (x & 0xf0f0f0f0) r += 4;
1068 if (x & 0xff00ff00) r += 8;
1069 if (x & 0xffff0000) r += 16;
1070#endif
1071
1072 return r;
1073#endif
1074 }
1075
1076 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
1077 ecb_function_ ecb_const int
1078 ecb_ctz64 (uint64_t x)
1079 {
1080#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1081 unsigned long r;
1082 _BitScanForward64 (&r, x);
1083 return (int)r;
1084#else
1085 int shift = x & 0xffffffff ? 0 : 32;
1086 return ecb_ctz32 (x >> shift) + shift;
1087#endif
1088 }
1089
1090 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
1091 ecb_function_ ecb_const int
1092 ecb_popcount32 (uint32_t x)
1093 {
1094 x -= (x >> 1) & 0x55555555;
1095 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
1096 x = ((x >> 4) + x) & 0x0f0f0f0f;
1097 x *= 0x01010101;
1098
1099 return x >> 24;
1100 }
1101
1102 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
1103 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
1104 {
1105#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1106 unsigned long r;
1107 _BitScanReverse (&r, x);
1108 return (int)r;
1109#else
1110 int r = 0;
1111
1112 if (x >> 16) { x >>= 16; r += 16; }
1113 if (x >> 8) { x >>= 8; r += 8; }
1114 if (x >> 4) { x >>= 4; r += 4; }
1115 if (x >> 2) { x >>= 2; r += 2; }
1116 if (x >> 1) { r += 1; }
1117
1118 return r;
1119#endif
1120 }
1121
1122 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
1123 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
1124 {
1125#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1126 unsigned long r;
1127 _BitScanReverse64 (&r, x);
1128 return (int)r;
1129#else
1130 int r = 0;
1131
1132 if (x >> 32) { x >>= 32; r += 32; }
1133
1134 return r + ecb_ld32 (x);
1135#endif
1136 }
1137#endif
1138
1139ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1140ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1141ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1142ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1143
1144ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1145ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1146{
1147 return ( (x * 0x0802U & 0x22110U)
1148 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1149}
1150
1151ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1152ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1153{
1154 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1155 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1156 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1157 x = ( x >> 8 ) | ( x << 8);
1158
1159 return x;
1160}
1161
1162ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1163ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1164{
1165 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1166 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1167 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1168 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1169 x = ( x >> 16 ) | ( x << 16);
1170
1171 return x;
1172}
1173
1174/* popcount64 is only available on 64 bit cpus as gcc builtin */
1175/* so for this version we are lazy */
1176ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1177ecb_function_ ecb_const int
1178ecb_popcount64 (uint64_t x)
1179{
1180 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1181}
1182
1183ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1184ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1185ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1186ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1187ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1188ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1189ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1190ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1191
1192ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1193ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1194ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1195ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1196ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1197ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1198ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1199ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1200
1201#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1202 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1203 #define ecb_bswap16(x) __builtin_bswap16 (x)
1204 #else
1205 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1206 #endif
1207 #define ecb_bswap32(x) __builtin_bswap32 (x)
1208 #define ecb_bswap64(x) __builtin_bswap64 (x)
1209#elif _MSC_VER
1210 #include <stdlib.h>
1211 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1212 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1213 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1214#else
1215 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1216 ecb_function_ ecb_const uint16_t
1217 ecb_bswap16 (uint16_t x)
1218 {
1219 return ecb_rotl16 (x, 8);
1220 }
1221
1222 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1223 ecb_function_ ecb_const uint32_t
1224 ecb_bswap32 (uint32_t x)
1225 {
1226 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1227 }
1228
1229 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1230 ecb_function_ ecb_const uint64_t
1231 ecb_bswap64 (uint64_t x)
1232 {
1233 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1234 }
1235#endif
1236
1237#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1238 #define ecb_unreachable() __builtin_unreachable ()
1239#else
1240 /* this seems to work fine, but gcc always emits a warning for it :/ */
1241 ecb_inline ecb_noreturn void ecb_unreachable (void);
1242 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1243#endif
1244
1245/* try to tell the compiler that some condition is definitely true */
1246#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1247
1248ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
1249ecb_inline ecb_const uint32_t
1250ecb_byteorder_helper (void)
1251{
1252 /* the union code still generates code under pressure in gcc, */
1253 /* but less than using pointers, and always seems to */
1254 /* successfully return a constant. */
1255 /* the reason why we have this horrible preprocessor mess */
1256 /* is to avoid it in all cases, at least on common architectures */
1257 /* or when using a recent enough gcc version (>= 4.6) */
1258#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1259 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1260 #define ECB_LITTLE_ENDIAN 1
1261 return 0x44332211;
1262#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1263 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1264 #define ECB_BIG_ENDIAN 1
1265 return 0x11223344;
1266#else
1267 union
1268 {
1269 uint8_t c[4];
1270 uint32_t u;
1271 } u = { 0x11, 0x22, 0x33, 0x44 };
1272 return u.u;
1273#endif
1274}
1275
1276ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1277ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
1278ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1279ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1280
1281#if ECB_GCC_VERSION(3,0) || ECB_C99
1282 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1283#else
1284 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1285#endif
1286
1287#if ECB_CPP
1288 template<typename T>
1289 static inline T ecb_div_rd (T val, T div)
1290 {
1291 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1292 }
1293 template<typename T>
1294 static inline T ecb_div_ru (T val, T div)
1295 {
1296 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1297 }
1298#else
1299 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1300 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1301#endif
1302
1303#if ecb_cplusplus_does_not_suck
1304 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1305 template<typename T, int N>
1306 static inline int ecb_array_length (const T (&arr)[N])
1307 {
1308 return N;
1309 }
1310#else
1311 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1312#endif
1313
1314ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1315ecb_function_ ecb_const uint32_t
1316ecb_binary16_to_binary32 (uint32_t x)
1317{
1318 unsigned int s = (x & 0x8000) << (31 - 15);
1319 int e = (x >> 10) & 0x001f;
1320 unsigned int m = x & 0x03ff;
1321
1322 if (ecb_expect_false (e == 31))
1323 /* infinity or NaN */
1324 e = 255 - (127 - 15);
1325 else if (ecb_expect_false (!e))
1326 {
1327 if (ecb_expect_true (!m))
1328 /* zero, handled by code below by forcing e to 0 */
1329 e = 0 - (127 - 15);
1330 else
1331 {
1332 /* subnormal, renormalise */
1333 unsigned int s = 10 - ecb_ld32 (m);
1334
1335 m = (m << s) & 0x3ff; /* mask implicit bit */
1336 e -= s - 1;
1337 }
1338 }
1339
1340 /* e and m now are normalised, or zero, (or inf or nan) */
1341 e += 127 - 15;
1342
1343 return s | (e << 23) | (m << (23 - 10));
1344}
1345
1346ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1347ecb_function_ ecb_const uint16_t
1348ecb_binary32_to_binary16 (uint32_t x)
1349{
1350 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1351 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1352 unsigned int m = x & 0x007fffff;
1353
1354 x &= 0x7fffffff;
1355
1356 /* if it's within range of binary16 normals, use fast path */
1357 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1358 {
1359 /* mantissa round-to-even */
1360 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1361
1362 /* handle overflow */
1363 if (ecb_expect_false (m >= 0x00800000))
1364 {
1365 m >>= 1;
1366 e += 1;
1367 }
1368
1369 return s | (e << 10) | (m >> (23 - 10));
1370 }
1371
1372 /* handle large numbers and infinity */
1373 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1374 return s | 0x7c00;
1375
1376 /* handle zero, subnormals and small numbers */
1377 if (ecb_expect_true (x < 0x38800000))
1378 {
1379 /* zero */
1380 if (ecb_expect_true (!x))
1381 return s;
1382
1383 /* handle subnormals */
1384
1385 /* too small, will be zero */
1386 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1387 return s;
1388
1389 m |= 0x00800000; /* make implicit bit explicit */
1390
1391 /* very tricky - we need to round to the nearest e (+10) bit value */
1392 {
1393 unsigned int bits = 14 - e;
1394 unsigned int half = (1 << (bits - 1)) - 1;
1395 unsigned int even = (m >> bits) & 1;
1396
1397 /* if this overflows, we will end up with a normalised number */
1398 m = (m + half + even) >> bits;
1399 }
1400
1401 return s | m;
1402 }
1403
1404 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1405 m >>= 13;
1406
1407 return s | 0x7c00 | m | !m;
1408}
1409
1410/*******************************************************************************/
1411/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1412
1413/* basically, everything uses "ieee pure-endian" floating point numbers */
1414/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1415#if 0 \
1416 || __i386 || __i386__ \
1417 || ECB_GCC_AMD64 \
1418 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1419 || defined __s390__ || defined __s390x__ \
1420 || defined __mips__ \
1421 || defined __alpha__ \
1422 || defined __hppa__ \
1423 || defined __ia64__ \
1424 || defined __m68k__ \
1425 || defined __m88k__ \
1426 || defined __sh__ \
1427 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1428 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1429 || defined __aarch64__
1430 #define ECB_STDFP 1
1431 #include <string.h> /* for memcpy */
1432#else
1433 #define ECB_STDFP 0
1434#endif
1435
1436#ifndef ECB_NO_LIBM
1437
1438 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1439
1440 /* only the oldest of old doesn't have this one. solaris. */
1441 #ifdef INFINITY
1442 #define ECB_INFINITY INFINITY
1443 #else
1444 #define ECB_INFINITY HUGE_VAL
1445 #endif
1446
1447 #ifdef NAN
1448 #define ECB_NAN NAN
1449 #else
1450 #define ECB_NAN ECB_INFINITY
1451 #endif
1452
1453 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1454 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1455 #define ecb_frexpf(x,e) frexpf ((x), (e))
1456 #else
1457 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1458 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1459 #endif
1460
1461 /* convert a float to ieee single/binary32 */
1462 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1463 ecb_function_ ecb_const uint32_t
1464 ecb_float_to_binary32 (float x)
1465 {
1466 uint32_t r;
1467
1468 #if ECB_STDFP
1469 memcpy (&r, &x, 4);
1470 #else
1471 /* slow emulation, works for anything but -0 */
1472 uint32_t m;
1473 int e;
1474
1475 if (x == 0e0f ) return 0x00000000U;
1476 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1477 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1478 if (x != x ) return 0x7fbfffffU;
1479
1480 m = ecb_frexpf (x, &e) * 0x1000000U;
1481
1482 r = m & 0x80000000U;
1483
1484 if (r)
1485 m = -m;
1486
1487 if (e <= -126)
1488 {
1489 m &= 0xffffffU;
1490 m >>= (-125 - e);
1491 e = -126;
1492 }
1493
1494 r |= (e + 126) << 23;
1495 r |= m & 0x7fffffU;
1496 #endif
1497
1498 return r;
1499 }
1500
1501 /* converts an ieee single/binary32 to a float */
1502 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1503 ecb_function_ ecb_const float
1504 ecb_binary32_to_float (uint32_t x)
1505 {
1506 float r;
1507
1508 #if ECB_STDFP
1509 memcpy (&r, &x, 4);
1510 #else
1511 /* emulation, only works for normals and subnormals and +0 */
1512 int neg = x >> 31;
1513 int e = (x >> 23) & 0xffU;
1514
1515 x &= 0x7fffffU;
1516
1517 if (e)
1518 x |= 0x800000U;
1519 else
1520 e = 1;
1521
1522 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1523 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1524
1525 r = neg ? -r : r;
1526 #endif
1527
1528 return r;
1529 }
1530
1531 /* convert a double to ieee double/binary64 */
1532 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1533 ecb_function_ ecb_const uint64_t
1534 ecb_double_to_binary64 (double x)
1535 {
1536 uint64_t r;
1537
1538 #if ECB_STDFP
1539 memcpy (&r, &x, 8);
1540 #else
1541 /* slow emulation, works for anything but -0 */
1542 uint64_t m;
1543 int e;
1544
1545 if (x == 0e0 ) return 0x0000000000000000U;
1546 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1547 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1548 if (x != x ) return 0X7ff7ffffffffffffU;
1549
1550 m = frexp (x, &e) * 0x20000000000000U;
1551
1552 r = m & 0x8000000000000000;;
1553
1554 if (r)
1555 m = -m;
1556
1557 if (e <= -1022)
1558 {
1559 m &= 0x1fffffffffffffU;
1560 m >>= (-1021 - e);
1561 e = -1022;
1562 }
1563
1564 r |= ((uint64_t)(e + 1022)) << 52;
1565 r |= m & 0xfffffffffffffU;
1566 #endif
1567
1568 return r;
1569 }
1570
1571 /* converts an ieee double/binary64 to a double */
1572 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1573 ecb_function_ ecb_const double
1574 ecb_binary64_to_double (uint64_t x)
1575 {
1576 double r;
1577
1578 #if ECB_STDFP
1579 memcpy (&r, &x, 8);
1580 #else
1581 /* emulation, only works for normals and subnormals and +0 */
1582 int neg = x >> 63;
1583 int e = (x >> 52) & 0x7ffU;
1584
1585 x &= 0xfffffffffffffU;
1586
1587 if (e)
1588 x |= 0x10000000000000U;
1589 else
1590 e = 1;
1591
1592 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1593 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1594
1595 r = neg ? -r : r;
1596 #endif
1597
1598 return r;
1599 }
1600
1601 /* convert a float to ieee half/binary16 */
1602 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1603 ecb_function_ ecb_const uint16_t
1604 ecb_float_to_binary16 (float x)
1605 {
1606 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1607 }
1608
1609 /* convert an ieee half/binary16 to float */
1610 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1611 ecb_function_ ecb_const float
1612 ecb_binary16_to_float (uint16_t x)
1613 {
1614 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1615 }
1616
1617#endif
1618
1619#endif
1620
1621/* ECB.H END */
1622
1623#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1624/* if your architecture doesn't need memory fences, e.g. because it is
1625 * single-cpu/core, or if you use libev in a project that doesn't use libev
1626 * from multiple threads, then you can define ECB_NO_THREADS when compiling
1627 * libev, in which cases the memory fences become nops.
1628 * alternatively, you can remove this #error and link against libpthread,
1629 * which will then provide the memory fences.
1630 */
1631# error "memory fences not defined for your architecture, please report"
1632#endif
1633
1634#ifndef ECB_MEMORY_FENCE
1635# define ECB_MEMORY_FENCE do { } while (0)
1636# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1637# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1638#endif
1639
488#define inline_size static inline 1640#define inline_size ecb_inline
489 1641
490#if EV_FEATURE_CODE 1642#if EV_FEATURE_CODE
491# define inline_speed static inline 1643# define inline_speed ecb_inline
492#else 1644#else
493# define inline_speed static noinline 1645# define inline_speed ecb_noinline static
494#endif 1646#endif
1647
1648/*****************************************************************************/
1649/* raw syscall wrappers */
1650
1651#if EV_NEED_SYSCALL
1652
1653#include <sys/syscall.h>
1654
1655/*
1656 * define some syscall wrappers for common architectures
1657 * this is mostly for nice looks during debugging, not performance.
1658 * our syscalls return < 0, not == -1, on error. which is good
1659 * enough for linux aio.
1660 * TODO: arm is also common nowadays, maybe even mips and x86
1661 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1662 */
1663#if __GNUC__ && __linux && ECB_AMD64 && !defined __OPTIMIZE_SIZE__
1664 /* the costly errno access probably kills this for size optimisation */
1665
1666 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1667 ({ \
1668 long res; \
1669 register unsigned long r6 __asm__ ("r9" ); \
1670 register unsigned long r5 __asm__ ("r8" ); \
1671 register unsigned long r4 __asm__ ("r10"); \
1672 register unsigned long r3 __asm__ ("rdx"); \
1673 register unsigned long r2 __asm__ ("rsi"); \
1674 register unsigned long r1 __asm__ ("rdi"); \
1675 if (narg >= 6) r6 = (unsigned long)(arg6); \
1676 if (narg >= 5) r5 = (unsigned long)(arg5); \
1677 if (narg >= 4) r4 = (unsigned long)(arg4); \
1678 if (narg >= 3) r3 = (unsigned long)(arg3); \
1679 if (narg >= 2) r2 = (unsigned long)(arg2); \
1680 if (narg >= 1) r1 = (unsigned long)(arg1); \
1681 __asm__ __volatile__ ( \
1682 "syscall\n\t" \
1683 : "=a" (res) \
1684 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1685 : "cc", "r11", "cx", "memory"); \
1686 errno = -res; \
1687 res; \
1688 })
1689
1690#endif
1691
1692#ifdef ev_syscall
1693 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1694 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1695 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1696 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1697 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1698 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1699 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1700#else
1701 #define ev_syscall0(nr) syscall (nr)
1702 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1703 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1704 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1705 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1706 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1707 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1708#endif
1709
1710#endif
1711
1712/*****************************************************************************/
495 1713
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1714#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
497 1715
498#if EV_MINPRI == EV_MAXPRI 1716#if EV_MINPRI == EV_MAXPRI
499# define ABSPRI(w) (((W)w), 0) 1717# define ABSPRI(w) (((W)w), 0)
500#else 1718#else
501# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1719# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
502#endif 1720#endif
503 1721
504#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1722#define EMPTY /* required for microsofts broken pseudo-c compiler */
505#define EMPTY2(a,b) /* used to suppress some warnings */
506 1723
507typedef ev_watcher *W; 1724typedef ev_watcher *W;
508typedef ev_watcher_list *WL; 1725typedef ev_watcher_list *WL;
509typedef ev_watcher_time *WT; 1726typedef ev_watcher_time *WT;
510 1727
… …
535# include "ev_win32.c" 1752# include "ev_win32.c"
536#endif 1753#endif
537 1754
538/*****************************************************************************/ 1755/*****************************************************************************/
539 1756
1757#if EV_USE_LINUXAIO
1758# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1759#endif
1760
1761/* define a suitable floor function (only used by periodics atm) */
1762
1763#if EV_USE_FLOOR
1764# include <math.h>
1765# define ev_floor(v) floor (v)
1766#else
1767
1768#include <float.h>
1769
1770/* a floor() replacement function, should be independent of ev_tstamp type */
1771ecb_noinline
1772static ev_tstamp
1773ev_floor (ev_tstamp v)
1774{
1775 /* the choice of shift factor is not terribly important */
1776#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1777 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1778#else
1779 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1780#endif
1781
1782 /* special treatment for negative arguments */
1783 if (ecb_expect_false (v < 0.))
1784 {
1785 ev_tstamp f = -ev_floor (-v);
1786
1787 return f - (f == v ? 0 : 1);
1788 }
1789
1790 /* argument too large for an unsigned long? then reduce it */
1791 if (ecb_expect_false (v >= shift))
1792 {
1793 ev_tstamp f;
1794
1795 if (v == v - 1.)
1796 return v; /* very large numbers are assumed to be integer */
1797
1798 f = shift * ev_floor (v * (1. / shift));
1799 return f + ev_floor (v - f);
1800 }
1801
1802 /* fits into an unsigned long */
1803 return (unsigned long)v;
1804}
1805
1806#endif
1807
1808/*****************************************************************************/
1809
1810#ifdef __linux
1811# include <sys/utsname.h>
1812#endif
1813
1814ecb_noinline ecb_cold
1815static unsigned int
1816ev_linux_version (void)
1817{
1818#ifdef __linux
1819 unsigned int v = 0;
1820 struct utsname buf;
1821 int i;
1822 char *p = buf.release;
1823
1824 if (uname (&buf))
1825 return 0;
1826
1827 for (i = 3+1; --i; )
1828 {
1829 unsigned int c = 0;
1830
1831 for (;;)
1832 {
1833 if (*p >= '0' && *p <= '9')
1834 c = c * 10 + *p++ - '0';
1835 else
1836 {
1837 p += *p == '.';
1838 break;
1839 }
1840 }
1841
1842 v = (v << 8) | c;
1843 }
1844
1845 return v;
1846#else
1847 return 0;
1848#endif
1849}
1850
1851/*****************************************************************************/
1852
540#if EV_AVOID_STDIO 1853#if EV_AVOID_STDIO
541static void noinline 1854ecb_noinline ecb_cold
1855static void
542ev_printerr (const char *msg) 1856ev_printerr (const char *msg)
543{ 1857{
544 write (STDERR_FILENO, msg, strlen (msg)); 1858 write (STDERR_FILENO, msg, strlen (msg));
545} 1859}
546#endif 1860#endif
547 1861
548static void (*syserr_cb)(const char *msg); 1862static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
549 1863
1864ecb_cold
550void 1865void
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1866ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
552{ 1867{
553 syserr_cb = cb; 1868 syserr_cb = cb;
554} 1869}
555 1870
556static void noinline 1871ecb_noinline ecb_cold
1872static void
557ev_syserr (const char *msg) 1873ev_syserr (const char *msg)
558{ 1874{
559 if (!msg) 1875 if (!msg)
560 msg = "(libev) system error"; 1876 msg = "(libev) system error";
561 1877
562 if (syserr_cb) 1878 if (syserr_cb)
563 syserr_cb (msg); 1879 syserr_cb (msg);
564 else 1880 else
565 { 1881 {
566#if EV_AVOID_STDIO 1882#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1883 ev_printerr (msg);
570 ev_printerr (": "); 1884 ev_printerr (": ");
571 ev_printerr (err); 1885 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1886 ev_printerr ("\n");
573#else 1887#else
574 perror (msg); 1888 perror (msg);
575#endif 1889#endif
576 abort (); 1890 abort ();
577 } 1891 }
578} 1892}
579 1893
580static void * 1894static void *
581ev_realloc_emul (void *ptr, long size) 1895ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
582{ 1896{
583#if __GLIBC__
584 return realloc (ptr, size);
585#else
586 /* some systems, notably openbsd and darwin, fail to properly 1897 /* some systems, notably openbsd and darwin, fail to properly
587 * implement realloc (x, 0) (as required by both ansi c-89 and 1898 * implement realloc (x, 0) (as required by both ansi c-89 and
588 * the single unix specification, so work around them here. 1899 * the single unix specification, so work around them here.
1900 * recently, also (at least) fedora and debian started breaking it,
1901 * despite documenting it otherwise.
589 */ 1902 */
590 1903
591 if (size) 1904 if (size)
592 return realloc (ptr, size); 1905 return realloc (ptr, size);
593 1906
594 free (ptr); 1907 free (ptr);
595 return 0; 1908 return 0;
596#endif
597} 1909}
598 1910
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1911static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
600 1912
1913ecb_cold
601void 1914void
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1915ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
603{ 1916{
604 alloc = cb; 1917 alloc = cb;
605} 1918}
606 1919
607inline_speed void * 1920inline_speed void *
… …
610 ptr = alloc (ptr, size); 1923 ptr = alloc (ptr, size);
611 1924
612 if (!ptr && size) 1925 if (!ptr && size)
613 { 1926 {
614#if EV_AVOID_STDIO 1927#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1928 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1929#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1930 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1931#endif
619 abort (); 1932 abort ();
620 } 1933 }
621 1934
622 return ptr; 1935 return ptr;
… …
634typedef struct 1947typedef struct
635{ 1948{
636 WL head; 1949 WL head;
637 unsigned char events; /* the events watched for */ 1950 unsigned char events; /* the events watched for */
638 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 1951 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1952 unsigned char emask; /* some backends store the actual kernel mask in here */
640 unsigned char unused; 1953 unsigned char eflags; /* flags field for use by backends */
641#if EV_USE_EPOLL 1954#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1955 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1956#endif
644#if EV_SELECT_IS_WINSOCKET 1957#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1958 SOCKET handle;
1959#endif
1960#if EV_USE_IOCP
1961 OVERLAPPED or, ow;
646#endif 1962#endif
647} ANFD; 1963} ANFD;
648 1964
649/* stores the pending event set for a given watcher */ 1965/* stores the pending event set for a given watcher */
650typedef struct 1966typedef struct
… …
692 #undef VAR 2008 #undef VAR
693 }; 2009 };
694 #include "ev_wrap.h" 2010 #include "ev_wrap.h"
695 2011
696 static struct ev_loop default_loop_struct; 2012 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 2013 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 2014
699#else 2015#else
700 2016
701 ev_tstamp ev_rt_now; 2017 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 2018 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 2019 #include "ev_vars.h"
704 #undef VAR 2020 #undef VAR
705 2021
706 static int ev_default_loop_ptr; 2022 static int ev_default_loop_ptr;
707 2023
708#endif 2024#endif
709 2025
710#if EV_FEATURE_API 2026#if EV_FEATURE_API
711# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2027# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
712# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2028# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
713# define EV_INVOKE_PENDING invoke_cb (EV_A) 2029# define EV_INVOKE_PENDING invoke_cb (EV_A)
714#else 2030#else
715# define EV_RELEASE_CB (void)0 2031# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 2032# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2033# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 2034#endif
719 2035
720#define EVUNLOOP_RECURSE 0x80 2036#define EVBREAK_RECURSE 0x80
721 2037
722/*****************************************************************************/ 2038/*****************************************************************************/
723 2039
724#ifndef EV_HAVE_EV_TIME 2040#ifndef EV_HAVE_EV_TIME
725ev_tstamp 2041ev_tstamp
726ev_time (void) 2042ev_time (void) EV_NOEXCEPT
727{ 2043{
728#if EV_USE_REALTIME 2044#if EV_USE_REALTIME
729 if (expect_true (have_realtime)) 2045 if (ecb_expect_true (have_realtime))
730 { 2046 {
731 struct timespec ts; 2047 struct timespec ts;
732 clock_gettime (CLOCK_REALTIME, &ts); 2048 clock_gettime (CLOCK_REALTIME, &ts);
733 return ts.tv_sec + ts.tv_nsec * 1e-9; 2049 return EV_TS_GET (ts);
734 } 2050 }
735#endif 2051#endif
736 2052
2053 {
737 struct timeval tv; 2054 struct timeval tv;
738 gettimeofday (&tv, 0); 2055 gettimeofday (&tv, 0);
739 return tv.tv_sec + tv.tv_usec * 1e-6; 2056 return EV_TV_GET (tv);
2057 }
740} 2058}
741#endif 2059#endif
742 2060
743inline_size ev_tstamp 2061inline_size ev_tstamp
744get_clock (void) 2062get_clock (void)
745{ 2063{
746#if EV_USE_MONOTONIC 2064#if EV_USE_MONOTONIC
747 if (expect_true (have_monotonic)) 2065 if (ecb_expect_true (have_monotonic))
748 { 2066 {
749 struct timespec ts; 2067 struct timespec ts;
750 clock_gettime (CLOCK_MONOTONIC, &ts); 2068 clock_gettime (CLOCK_MONOTONIC, &ts);
751 return ts.tv_sec + ts.tv_nsec * 1e-9; 2069 return EV_TS_GET (ts);
752 } 2070 }
753#endif 2071#endif
754 2072
755 return ev_time (); 2073 return ev_time ();
756} 2074}
757 2075
758#if EV_MULTIPLICITY 2076#if EV_MULTIPLICITY
759ev_tstamp 2077ev_tstamp
760ev_now (EV_P) 2078ev_now (EV_P) EV_NOEXCEPT
761{ 2079{
762 return ev_rt_now; 2080 return ev_rt_now;
763} 2081}
764#endif 2082#endif
765 2083
766void 2084void
767ev_sleep (ev_tstamp delay) 2085ev_sleep (ev_tstamp delay) EV_NOEXCEPT
768{ 2086{
769 if (delay > 0.) 2087 if (delay > EV_TS_CONST (0.))
770 { 2088 {
771#if EV_USE_NANOSLEEP 2089#if EV_USE_NANOSLEEP
772 struct timespec ts; 2090 struct timespec ts;
773 2091
774 ts.tv_sec = (time_t)delay; 2092 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 2093 nanosleep (&ts, 0);
778#elif defined(_WIN32) 2094#elif defined _WIN32
2095 /* maybe this should round up, as ms is very low resolution */
2096 /* compared to select (µs) or nanosleep (ns) */
779 Sleep ((unsigned long)(delay * 1e3)); 2097 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
780#else 2098#else
781 struct timeval tv; 2099 struct timeval tv;
782
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785 2100
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2101 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 2102 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 2103 /* by older ones */
2104 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 2105 select (0, 0, 0, 0, &tv);
790#endif 2106#endif
791 } 2107 }
792} 2108}
793 2109
… …
804 2120
805 do 2121 do
806 ncur <<= 1; 2122 ncur <<= 1;
807 while (cnt > ncur); 2123 while (cnt > ncur);
808 2124
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 2125 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 2126 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 2127 {
812 ncur *= elem; 2128 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 2129 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 2130 ncur = ncur - sizeof (void *) * 4;
… …
816 } 2132 }
817 2133
818 return ncur; 2134 return ncur;
819} 2135}
820 2136
821static noinline void * 2137ecb_noinline ecb_cold
2138static void *
822array_realloc (int elem, void *base, int *cur, int cnt) 2139array_realloc (int elem, void *base, int *cur, int cnt)
823{ 2140{
824 *cur = array_nextsize (elem, *cur, cnt); 2141 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 2142 return ev_realloc (base, elem * *cur);
826} 2143}
827 2144
2145#define array_needsize_noinit(base,offset,count)
2146
828#define array_init_zero(base,count) \ 2147#define array_needsize_zerofill(base,offset,count) \
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2148 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
830 2149
831#define array_needsize(type,base,cur,cnt,init) \ 2150#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 2151 if (ecb_expect_false ((cnt) > (cur))) \
833 { \ 2152 { \
834 int ocur_ = (cur); \ 2153 ecb_unused int ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 2154 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 2155 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 2156 init ((base), ocur_, ((cur) - ocur_)); \
838 } 2157 }
839 2158
840#if 0 2159#if 0
841#define array_slim(type,stem) \ 2160#define array_slim(type,stem) \
842 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2161 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
851 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2170 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
852 2171
853/*****************************************************************************/ 2172/*****************************************************************************/
854 2173
855/* dummy callback for pending events */ 2174/* dummy callback for pending events */
856static void noinline 2175ecb_noinline
2176static void
857pendingcb (EV_P_ ev_prepare *w, int revents) 2177pendingcb (EV_P_ ev_prepare *w, int revents)
858{ 2178{
859} 2179}
860 2180
861void noinline 2181ecb_noinline
2182void
862ev_feed_event (EV_P_ void *w, int revents) 2183ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
863{ 2184{
864 W w_ = (W)w; 2185 W w_ = (W)w;
865 int pri = ABSPRI (w_); 2186 int pri = ABSPRI (w_);
866 2187
867 if (expect_false (w_->pending)) 2188 if (ecb_expect_false (w_->pending))
868 pendings [pri][w_->pending - 1].events |= revents; 2189 pendings [pri][w_->pending - 1].events |= revents;
869 else 2190 else
870 { 2191 {
871 w_->pending = ++pendingcnt [pri]; 2192 w_->pending = ++pendingcnt [pri];
872 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2193 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
873 pendings [pri][w_->pending - 1].w = w_; 2194 pendings [pri][w_->pending - 1].w = w_;
874 pendings [pri][w_->pending - 1].events = revents; 2195 pendings [pri][w_->pending - 1].events = revents;
875 } 2196 }
2197
2198 pendingpri = NUMPRI - 1;
876} 2199}
877 2200
878inline_speed void 2201inline_speed void
879feed_reverse (EV_P_ W w) 2202feed_reverse (EV_P_ W w)
880{ 2203{
881 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2204 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
882 rfeeds [rfeedcnt++] = w; 2205 rfeeds [rfeedcnt++] = w;
883} 2206}
884 2207
885inline_size void 2208inline_size void
886feed_reverse_done (EV_P_ int revents) 2209feed_reverse_done (EV_P_ int revents)
… …
921inline_speed void 2244inline_speed void
922fd_event (EV_P_ int fd, int revents) 2245fd_event (EV_P_ int fd, int revents)
923{ 2246{
924 ANFD *anfd = anfds + fd; 2247 ANFD *anfd = anfds + fd;
925 2248
926 if (expect_true (!anfd->reify)) 2249 if (ecb_expect_true (!anfd->reify))
927 fd_event_nocheck (EV_A_ fd, revents); 2250 fd_event_nocheck (EV_A_ fd, revents);
928} 2251}
929 2252
930void 2253void
931ev_feed_fd_event (EV_P_ int fd, int revents) 2254ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
932{ 2255{
933 if (fd >= 0 && fd < anfdmax) 2256 if (fd >= 0 && fd < anfdmax)
934 fd_event_nocheck (EV_A_ fd, revents); 2257 fd_event_nocheck (EV_A_ fd, revents);
935} 2258}
936 2259
… …
939inline_size void 2262inline_size void
940fd_reify (EV_P) 2263fd_reify (EV_P)
941{ 2264{
942 int i; 2265 int i;
943 2266
2267#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
2268 for (i = 0; i < fdchangecnt; ++i)
2269 {
2270 int fd = fdchanges [i];
2271 ANFD *anfd = anfds + fd;
2272
2273 if (anfd->reify & EV__IOFDSET && anfd->head)
2274 {
2275 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
2276
2277 if (handle != anfd->handle)
2278 {
2279 unsigned long arg;
2280
2281 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
2282
2283 /* handle changed, but fd didn't - we need to do it in two steps */
2284 backend_modify (EV_A_ fd, anfd->events, 0);
2285 anfd->events = 0;
2286 anfd->handle = handle;
2287 }
2288 }
2289 }
2290#endif
2291
944 for (i = 0; i < fdchangecnt; ++i) 2292 for (i = 0; i < fdchangecnt; ++i)
945 { 2293 {
946 int fd = fdchanges [i]; 2294 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 2295 ANFD *anfd = anfds + fd;
948 ev_io *w; 2296 ev_io *w;
949 2297
950 unsigned char events = 0; 2298 unsigned char o_events = anfd->events;
2299 unsigned char o_reify = anfd->reify;
951 2300
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2301 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 2302
955#if EV_SELECT_IS_WINSOCKET 2303 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 2304 {
958 unsigned long arg; 2305 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 2306
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 2307 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
2308 anfd->events |= (unsigned char)w->events;
2309
2310 if (o_events != anfd->events)
2311 o_reify = EV__IOFDSET; /* actually |= */
961 } 2312 }
962#endif
963 2313
964 { 2314 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 2315 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 2316 }
975 2317
976 fdchangecnt = 0; 2318 fdchangecnt = 0;
977} 2319}
978 2320
979/* something about the given fd changed */ 2321/* something about the given fd changed */
980inline_size void 2322inline_size
2323void
981fd_change (EV_P_ int fd, int flags) 2324fd_change (EV_P_ int fd, int flags)
982{ 2325{
983 unsigned char reify = anfds [fd].reify; 2326 unsigned char reify = anfds [fd].reify;
984 anfds [fd].reify |= flags; 2327 anfds [fd].reify |= flags;
985 2328
986 if (expect_true (!reify)) 2329 if (ecb_expect_true (!reify))
987 { 2330 {
988 ++fdchangecnt; 2331 ++fdchangecnt;
989 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2332 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
990 fdchanges [fdchangecnt - 1] = fd; 2333 fdchanges [fdchangecnt - 1] = fd;
991 } 2334 }
992} 2335}
993 2336
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2337/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 2338inline_speed ecb_cold void
996fd_kill (EV_P_ int fd) 2339fd_kill (EV_P_ int fd)
997{ 2340{
998 ev_io *w; 2341 ev_io *w;
999 2342
1000 while ((w = (ev_io *)anfds [fd].head)) 2343 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2346 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 2347 }
1005} 2348}
1006 2349
1007/* check whether the given fd is actually valid, for error recovery */ 2350/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 2351inline_size ecb_cold int
1009fd_valid (int fd) 2352fd_valid (int fd)
1010{ 2353{
1011#ifdef _WIN32 2354#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2355 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 2356#else
1014 return fcntl (fd, F_GETFD) != -1; 2357 return fcntl (fd, F_GETFD) != -1;
1015#endif 2358#endif
1016} 2359}
1017 2360
1018/* called on EBADF to verify fds */ 2361/* called on EBADF to verify fds */
1019static void noinline 2362ecb_noinline ecb_cold
2363static void
1020fd_ebadf (EV_P) 2364fd_ebadf (EV_P)
1021{ 2365{
1022 int fd; 2366 int fd;
1023 2367
1024 for (fd = 0; fd < anfdmax; ++fd) 2368 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 2370 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 2371 fd_kill (EV_A_ fd);
1028} 2372}
1029 2373
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 2374/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 2375ecb_noinline ecb_cold
2376static void
1032fd_enomem (EV_P) 2377fd_enomem (EV_P)
1033{ 2378{
1034 int fd; 2379 int fd;
1035 2380
1036 for (fd = anfdmax; fd--; ) 2381 for (fd = anfdmax; fd--; )
… …
1040 break; 2385 break;
1041 } 2386 }
1042} 2387}
1043 2388
1044/* usually called after fork if backend needs to re-arm all fds from scratch */ 2389/* usually called after fork if backend needs to re-arm all fds from scratch */
1045static void noinline 2390ecb_noinline
2391static void
1046fd_rearm_all (EV_P) 2392fd_rearm_all (EV_P)
1047{ 2393{
1048 int fd; 2394 int fd;
1049 2395
1050 for (fd = 0; fd < anfdmax; ++fd) 2396 for (fd = 0; fd < anfdmax; ++fd)
… …
1103 ev_tstamp minat; 2449 ev_tstamp minat;
1104 ANHE *minpos; 2450 ANHE *minpos;
1105 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2451 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1106 2452
1107 /* find minimum child */ 2453 /* find minimum child */
1108 if (expect_true (pos + DHEAP - 1 < E)) 2454 if (ecb_expect_true (pos + DHEAP - 1 < E))
1109 { 2455 {
1110 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2456 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1111 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2457 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1112 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2458 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1113 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2459 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1114 } 2460 }
1115 else if (pos < E) 2461 else if (pos < E)
1116 { 2462 {
1117 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2463 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1118 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2464 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1119 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2465 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1120 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2466 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1121 } 2467 }
1122 else 2468 else
1123 break; 2469 break;
1124 2470
1125 if (ANHE_at (he) <= minat) 2471 if (ANHE_at (he) <= minat)
… …
1133 2479
1134 heap [k] = he; 2480 heap [k] = he;
1135 ev_active (ANHE_w (he)) = k; 2481 ev_active (ANHE_w (he)) = k;
1136} 2482}
1137 2483
1138#else /* 4HEAP */ 2484#else /* not 4HEAP */
1139 2485
1140#define HEAP0 1 2486#define HEAP0 1
1141#define HPARENT(k) ((k) >> 1) 2487#define HPARENT(k) ((k) >> 1)
1142#define UPHEAP_DONE(p,k) (!(p)) 2488#define UPHEAP_DONE(p,k) (!(p))
1143 2489
… …
1231 2577
1232/*****************************************************************************/ 2578/*****************************************************************************/
1233 2579
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2580#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 2581
1236static void noinline 2582ecb_noinline ecb_cold
2583static void
1237evpipe_init (EV_P) 2584evpipe_init (EV_P)
1238{ 2585{
1239 if (!ev_is_active (&pipe_w)) 2586 if (!ev_is_active (&pipe_w))
1240 { 2587 {
2588 int fds [2];
2589
1241# if EV_USE_EVENTFD 2590# if EV_USE_EVENTFD
2591 fds [0] = -1;
1242 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2592 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1243 if (evfd < 0 && errno == EINVAL) 2593 if (fds [1] < 0 && errno == EINVAL)
1244 evfd = eventfd (0, 0); 2594 fds [1] = eventfd (0, 0);
1245 2595
1246 if (evfd >= 0) 2596 if (fds [1] < 0)
2597# endif
1247 { 2598 {
2599 while (pipe (fds))
2600 ev_syserr ("(libev) error creating signal/async pipe");
2601
2602 fd_intern (fds [0]);
2603 }
2604
1248 evpipe [0] = -1; 2605 evpipe [0] = fds [0];
1249 fd_intern (evfd); /* doing it twice doesn't hurt */ 2606
1250 ev_io_set (&pipe_w, evfd, EV_READ); 2607 if (evpipe [1] < 0)
2608 evpipe [1] = fds [1]; /* first call, set write fd */
2609 else
2610 {
2611 /* on subsequent calls, do not change evpipe [1] */
2612 /* so that evpipe_write can always rely on its value. */
2613 /* this branch does not do anything sensible on windows, */
2614 /* so must not be executed on windows */
2615
2616 dup2 (fds [1], evpipe [1]);
2617 close (fds [1]);
2618 }
2619
2620 fd_intern (evpipe [1]);
2621
2622 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2623 ev_io_start (EV_A_ &pipe_w);
2624 ev_unref (EV_A); /* watcher should not keep loop alive */
2625 }
2626}
2627
2628inline_speed void
2629evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2630{
2631 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2632
2633 if (ecb_expect_true (*flag))
2634 return;
2635
2636 *flag = 1;
2637 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2638
2639 pipe_write_skipped = 1;
2640
2641 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2642
2643 if (pipe_write_wanted)
2644 {
2645 int old_errno;
2646
2647 pipe_write_skipped = 0;
2648 ECB_MEMORY_FENCE_RELEASE;
2649
2650 old_errno = errno; /* save errno because write will clobber it */
2651
2652#if EV_USE_EVENTFD
2653 if (evpipe [0] < 0)
2654 {
2655 uint64_t counter = 1;
2656 write (evpipe [1], &counter, sizeof (uint64_t));
1251 } 2657 }
1252 else 2658 else
1253# endif 2659#endif
1254 { 2660 {
1255 while (pipe (evpipe)) 2661#ifdef _WIN32
1256 ev_syserr ("(libev) error creating signal/async pipe"); 2662 WSABUF buf;
1257 2663 DWORD sent;
1258 fd_intern (evpipe [0]); 2664 buf.buf = (char *)&buf;
1259 fd_intern (evpipe [1]); 2665 buf.len = 1;
1260 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2666 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2667#else
2668 write (evpipe [1], &(evpipe [1]), 1);
2669#endif
1261 } 2670 }
1262
1263 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 }
1266}
1267
1268inline_size void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{
1271 if (!*flag)
1272 {
1273 int old_errno = errno; /* save errno because write might clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277
1278#if EV_USE_EVENTFD
1279 if (evfd >= 0)
1280 {
1281 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t));
1283 }
1284 else
1285#endif
1286 write (evpipe [1], &dummy, 1);
1287 2671
1288 errno = old_errno; 2672 errno = old_errno;
1289 } 2673 }
1290} 2674}
1291 2675
… …
1294static void 2678static void
1295pipecb (EV_P_ ev_io *iow, int revents) 2679pipecb (EV_P_ ev_io *iow, int revents)
1296{ 2680{
1297 int i; 2681 int i;
1298 2682
2683 if (revents & EV_READ)
2684 {
1299#if EV_USE_EVENTFD 2685#if EV_USE_EVENTFD
1300 if (evfd >= 0) 2686 if (evpipe [0] < 0)
1301 { 2687 {
1302 uint64_t counter; 2688 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 2689 read (evpipe [1], &counter, sizeof (uint64_t));
1304 } 2690 }
1305 else 2691 else
1306#endif 2692#endif
1307 { 2693 {
1308 char dummy; 2694 char dummy[4];
2695#ifdef _WIN32
2696 WSABUF buf;
2697 DWORD recvd;
2698 DWORD flags = 0;
2699 buf.buf = dummy;
2700 buf.len = sizeof (dummy);
2701 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2702#else
1309 read (evpipe [0], &dummy, 1); 2703 read (evpipe [0], &dummy, sizeof (dummy));
2704#endif
2705 }
1310 } 2706 }
1311 2707
2708 pipe_write_skipped = 0;
2709
2710 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2711
2712#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 2713 if (sig_pending)
1313 { 2714 {
1314 sig_pending = 0; 2715 sig_pending = 0;
1315 2716
2717 ECB_MEMORY_FENCE;
2718
1316 for (i = EV_NSIG - 1; i--; ) 2719 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 2720 if (ecb_expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 2721 ev_feed_signal_event (EV_A_ i + 1);
1319 } 2722 }
2723#endif
1320 2724
1321#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1322 if (async_pending) 2726 if (async_pending)
1323 { 2727 {
1324 async_pending = 0; 2728 async_pending = 0;
2729
2730 ECB_MEMORY_FENCE;
1325 2731
1326 for (i = asynccnt; i--; ) 2732 for (i = asynccnt; i--; )
1327 if (asyncs [i]->sent) 2733 if (asyncs [i]->sent)
1328 { 2734 {
1329 asyncs [i]->sent = 0; 2735 asyncs [i]->sent = 0;
2736 ECB_MEMORY_FENCE_RELEASE;
1330 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2737 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1331 } 2738 }
1332 } 2739 }
1333#endif 2740#endif
1334} 2741}
1335 2742
1336/*****************************************************************************/ 2743/*****************************************************************************/
1337 2744
2745void
2746ev_feed_signal (int signum) EV_NOEXCEPT
2747{
2748#if EV_MULTIPLICITY
2749 EV_P;
2750 ECB_MEMORY_FENCE_ACQUIRE;
2751 EV_A = signals [signum - 1].loop;
2752
2753 if (!EV_A)
2754 return;
2755#endif
2756
2757 signals [signum - 1].pending = 1;
2758 evpipe_write (EV_A_ &sig_pending);
2759}
2760
1338static void 2761static void
1339ev_sighandler (int signum) 2762ev_sighandler (int signum)
1340{ 2763{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 2764#ifdef _WIN32
1346 signal (signum, ev_sighandler); 2765 signal (signum, ev_sighandler);
1347#endif 2766#endif
1348 2767
1349 signals [signum - 1].pending = 1; 2768 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 2769}
1352 2770
1353void noinline 2771ecb_noinline
2772void
1354ev_feed_signal_event (EV_P_ int signum) 2773ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1355{ 2774{
1356 WL w; 2775 WL w;
1357 2776
1358 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2777 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1359 return; 2778 return;
1360 2779
1361 --signum; 2780 --signum;
1362 2781
1363#if EV_MULTIPLICITY 2782#if EV_MULTIPLICITY
1364 /* it is permissible to try to feed a signal to the wrong loop */ 2783 /* it is permissible to try to feed a signal to the wrong loop */
1365 /* or, likely more useful, feeding a signal nobody is waiting for */ 2784 /* or, likely more useful, feeding a signal nobody is waiting for */
1366 2785
1367 if (expect_false (signals [signum].loop != EV_A)) 2786 if (ecb_expect_false (signals [signum].loop != EV_A))
1368 return; 2787 return;
1369#endif 2788#endif
1370 2789
1371 signals [signum].pending = 0; 2790 signals [signum].pending = 0;
2791 ECB_MEMORY_FENCE_RELEASE;
1372 2792
1373 for (w = signals [signum].head; w; w = w->next) 2793 for (w = signals [signum].head; w; w = w->next)
1374 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2794 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1375} 2795}
1376 2796
… …
1455 2875
1456#endif 2876#endif
1457 2877
1458/*****************************************************************************/ 2878/*****************************************************************************/
1459 2879
2880#if EV_USE_TIMERFD
2881
2882static void periodics_reschedule (EV_P);
2883
2884static void
2885timerfdcb (EV_P_ ev_io *iow, int revents)
2886{
2887 struct itimerspec its = { 0 };
2888
2889 /* since we can't easily come zup with a (portable) maximum value of time_t,
2890 * we wake up once per month, which hopefully is rare enough to not
2891 * be a problem. */
2892 its.it_value.tv_sec = ev_rt_now + 86400 * 30;
2893 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
2894
2895 ev_rt_now = ev_time ();
2896 /* periodics_reschedule only needs ev_rt_now */
2897 /* but maybe in the future we want the full treatment. */
2898 /*
2899 now_floor = EV_TS_CONST (0.);
2900 time_update (EV_A_ EV_TSTAMP_HUGE);
2901 */
2902 periodics_reschedule (EV_A);
2903}
2904
2905ecb_noinline ecb_cold
2906static void
2907evtimerfd_init (EV_P)
2908{
2909 if (!ev_is_active (&timerfd_w))
2910 {
2911 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
2912
2913 if (timerfd >= 0)
2914 {
2915 fd_intern (timerfd); /* just to be sure */
2916
2917 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
2918 ev_set_priority (&timerfd_w, EV_MINPRI);
2919 ev_io_start (EV_A_ &timerfd_w);
2920 ev_unref (EV_A); /* watcher should not keep loop alive */
2921
2922 /* (re-) arm timer */
2923 timerfdcb (EV_A_ 0, 0);
2924 }
2925 }
2926}
2927
2928#endif
2929
2930/*****************************************************************************/
2931
2932#if EV_USE_IOCP
2933# include "ev_iocp.c"
2934#endif
1460#if EV_USE_PORT 2935#if EV_USE_PORT
1461# include "ev_port.c" 2936# include "ev_port.c"
1462#endif 2937#endif
1463#if EV_USE_KQUEUE 2938#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2939# include "ev_kqueue.c"
1465#endif 2940#endif
1466#if EV_USE_EPOLL 2941#if EV_USE_EPOLL
1467# include "ev_epoll.c" 2942# include "ev_epoll.c"
1468#endif 2943#endif
2944#if EV_USE_LINUXAIO
2945# include "ev_linuxaio.c"
2946#endif
2947#if EV_USE_IOURING
2948# include "ev_iouring.c"
2949#endif
1469#if EV_USE_POLL 2950#if EV_USE_POLL
1470# include "ev_poll.c" 2951# include "ev_poll.c"
1471#endif 2952#endif
1472#if EV_USE_SELECT 2953#if EV_USE_SELECT
1473# include "ev_select.c" 2954# include "ev_select.c"
1474#endif 2955#endif
1475 2956
1476int 2957ecb_cold int
1477ev_version_major (void) 2958ev_version_major (void) EV_NOEXCEPT
1478{ 2959{
1479 return EV_VERSION_MAJOR; 2960 return EV_VERSION_MAJOR;
1480} 2961}
1481 2962
1482int 2963ecb_cold int
1483ev_version_minor (void) 2964ev_version_minor (void) EV_NOEXCEPT
1484{ 2965{
1485 return EV_VERSION_MINOR; 2966 return EV_VERSION_MINOR;
1486} 2967}
1487 2968
1488/* return true if we are running with elevated privileges and should ignore env variables */ 2969/* return true if we are running with elevated privileges and should ignore env variables */
1489int inline_size 2970inline_size ecb_cold int
1490enable_secure (void) 2971enable_secure (void)
1491{ 2972{
1492#ifdef _WIN32 2973#ifdef _WIN32
1493 return 0; 2974 return 0;
1494#else 2975#else
1495 return getuid () != geteuid () 2976 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2977 || getgid () != getegid ();
1497#endif 2978#endif
1498} 2979}
1499 2980
2981ecb_cold
1500unsigned int 2982unsigned int
1501ev_supported_backends (void) 2983ev_supported_backends (void) EV_NOEXCEPT
1502{ 2984{
1503 unsigned int flags = 0; 2985 unsigned int flags = 0;
1504 2986
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2987 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1506 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2988 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
1507 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 2989 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2990 if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO;
2991 if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING;
1508 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 2992 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2993 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
1510 2994
1511 return flags; 2995 return flags;
1512} 2996}
1513 2997
2998ecb_cold
1514unsigned int 2999unsigned int
1515ev_recommended_backends (void) 3000ev_recommended_backends (void) EV_NOEXCEPT
1516{ 3001{
1517 unsigned int flags = ev_supported_backends (); 3002 unsigned int flags = ev_supported_backends ();
1518 3003
1519#ifndef __NetBSD__ 3004#ifndef __NetBSD__
1520 /* kqueue is borked on everything but netbsd apparently */ 3005 /* kqueue is borked on everything but netbsd apparently */
… …
1528#endif 3013#endif
1529#ifdef __FreeBSD__ 3014#ifdef __FreeBSD__
1530 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3015 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1531#endif 3016#endif
1532 3017
3018 /* TODO: linuxaio is very experimental */
3019#if !EV_RECOMMEND_LINUXAIO
3020 flags &= ~EVBACKEND_LINUXAIO;
3021#endif
3022 /* TODO: linuxaio is super experimental */
3023#if !EV_RECOMMEND_IOURING
3024 flags &= ~EVBACKEND_IOURING;
3025#endif
3026
1533 return flags; 3027 return flags;
1534} 3028}
1535 3029
3030ecb_cold
1536unsigned int 3031unsigned int
1537ev_embeddable_backends (void) 3032ev_embeddable_backends (void) EV_NOEXCEPT
1538{ 3033{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3034 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540 3035
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3036 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */ 3037 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1543 flags &= ~EVBACKEND_EPOLL; 3038 flags &= ~EVBACKEND_EPOLL;
3039
3040 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3041
3042 /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not
3043 * because our backend_fd is the epoll fd we need as fallback.
3044 * if the kernel ever is fixed, this might change...
3045 */
1544 3046
1545 return flags; 3047 return flags;
1546} 3048}
1547 3049
1548unsigned int 3050unsigned int
1549ev_backend (EV_P) 3051ev_backend (EV_P) EV_NOEXCEPT
1550{ 3052{
1551 return backend; 3053 return backend;
1552} 3054}
1553 3055
1554#if EV_FEATURE_API 3056#if EV_FEATURE_API
1555unsigned int 3057unsigned int
1556ev_iteration (EV_P) 3058ev_iteration (EV_P) EV_NOEXCEPT
1557{ 3059{
1558 return loop_count; 3060 return loop_count;
1559} 3061}
1560 3062
1561unsigned int 3063unsigned int
1562ev_depth (EV_P) 3064ev_depth (EV_P) EV_NOEXCEPT
1563{ 3065{
1564 return loop_depth; 3066 return loop_depth;
1565} 3067}
1566 3068
1567void 3069void
1568ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3070ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1569{ 3071{
1570 io_blocktime = interval; 3072 io_blocktime = interval;
1571} 3073}
1572 3074
1573void 3075void
1574ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3076ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
1575{ 3077{
1576 timeout_blocktime = interval; 3078 timeout_blocktime = interval;
1577} 3079}
1578 3080
1579void 3081void
1580ev_set_userdata (EV_P_ void *data) 3082ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
1581{ 3083{
1582 userdata = data; 3084 userdata = data;
1583} 3085}
1584 3086
1585void * 3087void *
1586ev_userdata (EV_P) 3088ev_userdata (EV_P) EV_NOEXCEPT
1587{ 3089{
1588 return userdata; 3090 return userdata;
1589} 3091}
1590 3092
3093void
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3094ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
1592{ 3095{
1593 invoke_cb = invoke_pending_cb; 3096 invoke_cb = invoke_pending_cb;
1594} 3097}
1595 3098
3099void
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3100ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
1597{ 3101{
1598 release_cb = release; 3102 release_cb = release;
1599 acquire_cb = acquire; 3103 acquire_cb = acquire;
1600} 3104}
1601#endif 3105#endif
1602 3106
1603/* initialise a loop structure, must be zero-initialised */ 3107/* initialise a loop structure, must be zero-initialised */
1604static void noinline 3108ecb_noinline ecb_cold
3109static void
1605loop_init (EV_P_ unsigned int flags) 3110loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
1606{ 3111{
1607 if (!backend) 3112 if (!backend)
1608 { 3113 {
3114 origflags = flags;
3115
1609#if EV_USE_REALTIME 3116#if EV_USE_REALTIME
1610 if (!have_realtime) 3117 if (!have_realtime)
1611 { 3118 {
1612 struct timespec ts; 3119 struct timespec ts;
1613 3120
… …
1635 if (!(flags & EVFLAG_NOENV) 3142 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 3143 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 3144 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 3145 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 3146
1640 ev_rt_now = ev_time (); 3147 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 3148 mn_now = get_clock ();
1642 now_floor = mn_now; 3149 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 3150 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 3151#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 3152 invoke_cb = ev_invoke_pending;
1646#endif 3153#endif
1647 3154
1648 io_blocktime = 0.; 3155 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 3156 timeout_blocktime = 0.;
1650 backend = 0; 3157 backend = 0;
1651 backend_fd = -1; 3158 backend_fd = -1;
1652 sig_pending = 0; 3159 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 3160#if EV_ASYNC_ENABLE
1654 async_pending = 0; 3161 async_pending = 0;
1655#endif 3162#endif
3163 pipe_write_skipped = 0;
3164 pipe_write_wanted = 0;
3165 evpipe [0] = -1;
3166 evpipe [1] = -1;
1656#if EV_USE_INOTIFY 3167#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3168 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 3169#endif
1659#if EV_USE_SIGNALFD 3170#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3171 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 3172#endif
3173#if EV_USE_TIMERFD
3174 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3175#endif
1662 3176
1663 if (!(flags & 0x0000ffffU)) 3177 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 3178 flags |= ev_recommended_backends ();
1665 3179
3180#if EV_USE_IOCP
3181 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
3182#endif
1666#if EV_USE_PORT 3183#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3184 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 3185#endif
1669#if EV_USE_KQUEUE 3186#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3187 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3188#endif
3189#if EV_USE_IOURING
3190 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3191#endif
3192#if EV_USE_LINUXAIO
3193 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
1671#endif 3194#endif
1672#if EV_USE_EPOLL 3195#if EV_USE_EPOLL
1673 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3196 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
1674#endif 3197#endif
1675#if EV_USE_POLL 3198#if EV_USE_POLL
1676 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3199 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
1677#endif 3200#endif
1678#if EV_USE_SELECT 3201#if EV_USE_SELECT
1679 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3202 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
1680#endif 3203#endif
1681 3204
1682 ev_prepare_init (&pending_w, pendingcb); 3205 ev_prepare_init (&pending_w, pendingcb);
1683 3206
1684#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3207#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
1687#endif 3210#endif
1688 } 3211 }
1689} 3212}
1690 3213
1691/* free up a loop structure */ 3214/* free up a loop structure */
1692static void noinline 3215ecb_cold
3216void
1693loop_destroy (EV_P) 3217ev_loop_destroy (EV_P)
1694{ 3218{
1695 int i; 3219 int i;
3220
3221#if EV_MULTIPLICITY
3222 /* mimic free (0) */
3223 if (!EV_A)
3224 return;
3225#endif
3226
3227#if EV_CLEANUP_ENABLE
3228 /* queue cleanup watchers (and execute them) */
3229 if (ecb_expect_false (cleanupcnt))
3230 {
3231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
3232 EV_INVOKE_PENDING;
3233 }
3234#endif
3235
3236#if EV_CHILD_ENABLE
3237 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
3238 {
3239 ev_ref (EV_A); /* child watcher */
3240 ev_signal_stop (EV_A_ &childev);
3241 }
3242#endif
1696 3243
1697 if (ev_is_active (&pipe_w)) 3244 if (ev_is_active (&pipe_w))
1698 { 3245 {
1699 /*ev_ref (EV_A);*/ 3246 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 3247 /*ev_io_stop (EV_A_ &pipe_w);*/
1701 3248
1702#if EV_USE_EVENTFD
1703 if (evfd >= 0)
1704 close (evfd);
1705#endif
1706
1707 if (evpipe [0] >= 0)
1708 {
1709 EV_WIN32_CLOSE_FD (evpipe [0]); 3249 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1710 EV_WIN32_CLOSE_FD (evpipe [1]); 3250 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1711 }
1712 } 3251 }
1713 3252
1714#if EV_USE_SIGNALFD 3253#if EV_USE_SIGNALFD
1715 if (ev_is_active (&sigfd_w)) 3254 if (ev_is_active (&sigfd_w))
1716 close (sigfd); 3255 close (sigfd);
1717#endif 3256#endif
1718 3257
3258#if EV_USE_TIMERFD
3259 if (ev_is_active (&timerfd_w))
3260 close (timerfd);
3261#endif
3262
1719#if EV_USE_INOTIFY 3263#if EV_USE_INOTIFY
1720 if (fs_fd >= 0) 3264 if (fs_fd >= 0)
1721 close (fs_fd); 3265 close (fs_fd);
1722#endif 3266#endif
1723 3267
1724 if (backend_fd >= 0) 3268 if (backend_fd >= 0)
1725 close (backend_fd); 3269 close (backend_fd);
1726 3270
3271#if EV_USE_IOCP
3272 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
3273#endif
1727#if EV_USE_PORT 3274#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3275 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 3276#endif
1730#if EV_USE_KQUEUE 3277#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3278 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3279#endif
3280#if EV_USE_IOURING
3281 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3282#endif
3283#if EV_USE_LINUXAIO
3284 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
1732#endif 3285#endif
1733#if EV_USE_EPOLL 3286#if EV_USE_EPOLL
1734 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3287 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1735#endif 3288#endif
1736#if EV_USE_POLL 3289#if EV_USE_POLL
1737 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3290 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1738#endif 3291#endif
1739#if EV_USE_SELECT 3292#if EV_USE_SELECT
1740 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3293 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
1741#endif 3294#endif
1742 3295
1743 for (i = NUMPRI; i--; ) 3296 for (i = NUMPRI; i--; )
1744 { 3297 {
1745 array_free (pending, [i]); 3298 array_free (pending, [i]);
… …
1758 array_free (periodic, EMPTY); 3311 array_free (periodic, EMPTY);
1759#endif 3312#endif
1760#if EV_FORK_ENABLE 3313#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 3314 array_free (fork, EMPTY);
1762#endif 3315#endif
3316#if EV_CLEANUP_ENABLE
3317 array_free (cleanup, EMPTY);
3318#endif
1763 array_free (prepare, EMPTY); 3319 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 3320 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 3321#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 3322 array_free (async, EMPTY);
1767#endif 3323#endif
1768 3324
1769 backend = 0; 3325 backend = 0;
3326
3327#if EV_MULTIPLICITY
3328 if (ev_is_default_loop (EV_A))
3329#endif
3330 ev_default_loop_ptr = 0;
3331#if EV_MULTIPLICITY
3332 else
3333 ev_free (EV_A);
3334#endif
1770} 3335}
1771 3336
1772#if EV_USE_INOTIFY 3337#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 3338inline_size void infy_fork (EV_P);
1774#endif 3339#endif
1775 3340
1776inline_size void 3341inline_size void
1777loop_fork (EV_P) 3342loop_fork (EV_P)
1778{ 3343{
1779#if EV_USE_PORT 3344#if EV_USE_PORT
1780 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3345 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1781#endif 3346#endif
1782#if EV_USE_KQUEUE 3347#if EV_USE_KQUEUE
1783 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3348 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3349#endif
3350#if EV_USE_IOURING
3351 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3352#endif
3353#if EV_USE_LINUXAIO
3354 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
1784#endif 3355#endif
1785#if EV_USE_EPOLL 3356#if EV_USE_EPOLL
1786 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3357 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1787#endif 3358#endif
1788#if EV_USE_INOTIFY 3359#if EV_USE_INOTIFY
1789 infy_fork (EV_A); 3360 infy_fork (EV_A);
1790#endif 3361#endif
1791 3362
3363 if (postfork != 2)
3364 {
3365 #if EV_USE_SIGNALFD
3366 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3367 #endif
3368
3369 #if EV_USE_TIMERFD
3370 if (ev_is_active (&timerfd_w))
3371 {
3372 ev_ref (EV_A);
3373 ev_io_stop (EV_A_ &timerfd_w);
3374
3375 close (timerfd);
3376 timerfd = -2;
3377
3378 evtimerfd_init (EV_A);
3379 /* reschedule periodics, in case we missed something */
3380 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3381 }
3382 #endif
3383
3384 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1792 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
1793 { 3386 {
1794 /* this "locks" the handlers against writing to the pipe */ 3387 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1795 /* while we modify the fd vars */ 3388
1796 sig_pending = 1;
1797#if EV_ASYNC_ENABLE
1798 async_pending = 1;
1799#endif
1800
1801 ev_ref (EV_A); 3389 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 3390 ev_io_stop (EV_A_ &pipe_w);
1803 3391
1804#if EV_USE_EVENTFD
1805 if (evfd >= 0)
1806 close (evfd);
1807#endif
1808
1809 if (evpipe [0] >= 0) 3392 if (evpipe [0] >= 0)
1810 {
1811 EV_WIN32_CLOSE_FD (evpipe [0]); 3393 EV_WIN32_CLOSE_FD (evpipe [0]);
1812 EV_WIN32_CLOSE_FD (evpipe [1]); 3394
3395 evpipe_init (EV_A);
3396 /* iterate over everything, in case we missed something before */
3397 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1813 } 3398 }
1814 3399 #endif
1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1816 evpipe_init (EV_A);
1817 /* now iterate over everything, in case we missed something */
1818 pipecb (EV_A_ &pipe_w, EV_READ);
1819#endif
1820 } 3400 }
1821 3401
1822 postfork = 0; 3402 postfork = 0;
1823} 3403}
1824 3404
1825#if EV_MULTIPLICITY 3405#if EV_MULTIPLICITY
1826 3406
3407ecb_cold
1827struct ev_loop * 3408struct ev_loop *
1828ev_loop_new (unsigned int flags) 3409ev_loop_new (unsigned int flags) EV_NOEXCEPT
1829{ 3410{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3411 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 3412
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 3413 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 3414 loop_init (EV_A_ flags);
1834 3415
1835 if (ev_backend (EV_A)) 3416 if (ev_backend (EV_A))
1836 return EV_A; 3417 return EV_A;
1837 3418
3419 ev_free (EV_A);
1838 return 0; 3420 return 0;
1839} 3421}
1840 3422
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 3423#endif /* multiplicity */
1854 3424
1855#if EV_VERIFY 3425#if EV_VERIFY
1856static void noinline 3426ecb_noinline ecb_cold
3427static void
1857verify_watcher (EV_P_ W w) 3428verify_watcher (EV_P_ W w)
1858{ 3429{
1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3430 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1860 3431
1861 if (w->pending) 3432 if (w->pending)
1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3433 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1863} 3434}
1864 3435
1865static void noinline 3436ecb_noinline ecb_cold
3437static void
1866verify_heap (EV_P_ ANHE *heap, int N) 3438verify_heap (EV_P_ ANHE *heap, int N)
1867{ 3439{
1868 int i; 3440 int i;
1869 3441
1870 for (i = HEAP0; i < N + HEAP0; ++i) 3442 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 3447
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3448 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 3449 }
1878} 3450}
1879 3451
1880static void noinline 3452ecb_noinline ecb_cold
3453static void
1881array_verify (EV_P_ W *ws, int cnt) 3454array_verify (EV_P_ W *ws, int cnt)
1882{ 3455{
1883 while (cnt--) 3456 while (cnt--)
1884 { 3457 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3458 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 3460 }
1888} 3461}
1889#endif 3462#endif
1890 3463
1891#if EV_FEATURE_API 3464#if EV_FEATURE_API
1892void 3465void ecb_cold
1893ev_verify (EV_P) 3466ev_verify (EV_P) EV_NOEXCEPT
1894{ 3467{
1895#if EV_VERIFY 3468#if EV_VERIFY
1896 int i; 3469 int i;
1897 WL w; 3470 WL w, w2;
1898 3471
1899 assert (activecnt >= -1); 3472 assert (activecnt >= -1);
1900 3473
1901 assert (fdchangemax >= fdchangecnt); 3474 assert (fdchangemax >= fdchangecnt);
1902 for (i = 0; i < fdchangecnt; ++i) 3475 for (i = 0; i < fdchangecnt; ++i)
1903 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3476 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1904 3477
1905 assert (anfdmax >= 0); 3478 assert (anfdmax >= 0);
1906 for (i = 0; i < anfdmax; ++i) 3479 for (i = 0; i < anfdmax; ++i)
3480 {
3481 int j = 0;
3482
1907 for (w = anfds [i].head; w; w = w->next) 3483 for (w = w2 = anfds [i].head; w; w = w->next)
1908 { 3484 {
1909 verify_watcher (EV_A_ (W)w); 3485 verify_watcher (EV_A_ (W)w);
3486
3487 if (j++ & 1)
3488 {
3489 assert (("libev: io watcher list contains a loop", w != w2));
3490 w2 = w2->next;
3491 }
3492
1910 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3493 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1911 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3494 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1912 } 3495 }
3496 }
1913 3497
1914 assert (timermax >= timercnt); 3498 assert (timermax >= timercnt);
1915 verify_heap (EV_A_ timers, timercnt); 3499 verify_heap (EV_A_ timers, timercnt);
1916 3500
1917#if EV_PERIODIC_ENABLE 3501#if EV_PERIODIC_ENABLE
… …
1932#if EV_FORK_ENABLE 3516#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 3517 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 3518 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 3519#endif
1936 3520
3521#if EV_CLEANUP_ENABLE
3522 assert (cleanupmax >= cleanupcnt);
3523 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3524#endif
3525
1937#if EV_ASYNC_ENABLE 3526#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 3527 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 3528 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 3529#endif
1941 3530
… …
1958#endif 3547#endif
1959} 3548}
1960#endif 3549#endif
1961 3550
1962#if EV_MULTIPLICITY 3551#if EV_MULTIPLICITY
3552ecb_cold
1963struct ev_loop * 3553struct ev_loop *
1964ev_default_loop_init (unsigned int flags)
1965#else 3554#else
1966int 3555int
3556#endif
1967ev_default_loop (unsigned int flags) 3557ev_default_loop (unsigned int flags) EV_NOEXCEPT
1968#endif
1969{ 3558{
1970 if (!ev_default_loop_ptr) 3559 if (!ev_default_loop_ptr)
1971 { 3560 {
1972#if EV_MULTIPLICITY 3561#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 3562 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 3581
1993 return ev_default_loop_ptr; 3582 return ev_default_loop_ptr;
1994} 3583}
1995 3584
1996void 3585void
1997ev_default_destroy (void) 3586ev_loop_fork (EV_P) EV_NOEXCEPT
1998{ 3587{
1999#if EV_MULTIPLICITY 3588 postfork = 1;
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */
2021} 3589}
2022 3590
2023/*****************************************************************************/ 3591/*****************************************************************************/
2024 3592
2025void 3593void
… …
2027{ 3595{
2028 EV_CB_INVOKE ((W)w, revents); 3596 EV_CB_INVOKE ((W)w, revents);
2029} 3597}
2030 3598
2031unsigned int 3599unsigned int
2032ev_pending_count (EV_P) 3600ev_pending_count (EV_P) EV_NOEXCEPT
2033{ 3601{
2034 int pri; 3602 int pri;
2035 unsigned int count = 0; 3603 unsigned int count = 0;
2036 3604
2037 for (pri = NUMPRI; pri--; ) 3605 for (pri = NUMPRI; pri--; )
2038 count += pendingcnt [pri]; 3606 count += pendingcnt [pri];
2039 3607
2040 return count; 3608 return count;
2041} 3609}
2042 3610
2043void noinline 3611ecb_noinline
3612void
2044ev_invoke_pending (EV_P) 3613ev_invoke_pending (EV_P)
2045{ 3614{
2046 int pri; 3615 pendingpri = NUMPRI;
2047 3616
2048 for (pri = NUMPRI; pri--; ) 3617 do
3618 {
3619 --pendingpri;
3620
3621 /* pendingpri possibly gets modified in the inner loop */
2049 while (pendingcnt [pri]) 3622 while (pendingcnt [pendingpri])
2050 { 3623 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3624 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2052 3625
2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
2055
2056 p->w->pending = 0; 3626 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 3627 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 3628 EV_FREQUENT_CHECK;
2059 } 3629 }
3630 }
3631 while (pendingpri);
2060} 3632}
2061 3633
2062#if EV_IDLE_ENABLE 3634#if EV_IDLE_ENABLE
2063/* make idle watchers pending. this handles the "call-idle */ 3635/* make idle watchers pending. this handles the "call-idle */
2064/* only when higher priorities are idle" logic */ 3636/* only when higher priorities are idle" logic */
2065inline_size void 3637inline_size void
2066idle_reify (EV_P) 3638idle_reify (EV_P)
2067{ 3639{
2068 if (expect_false (idleall)) 3640 if (ecb_expect_false (idleall))
2069 { 3641 {
2070 int pri; 3642 int pri;
2071 3643
2072 for (pri = NUMPRI; pri--; ) 3644 for (pri = NUMPRI; pri--; )
2073 { 3645 {
… …
2103 { 3675 {
2104 ev_at (w) += w->repeat; 3676 ev_at (w) += w->repeat;
2105 if (ev_at (w) < mn_now) 3677 if (ev_at (w) < mn_now)
2106 ev_at (w) = mn_now; 3678 ev_at (w) = mn_now;
2107 3679
2108 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3680 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2109 3681
2110 ANHE_at_cache (timers [HEAP0]); 3682 ANHE_at_cache (timers [HEAP0]);
2111 downheap (timers, timercnt, HEAP0); 3683 downheap (timers, timercnt, HEAP0);
2112 } 3684 }
2113 else 3685 else
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 3693 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 3694 }
2123} 3695}
2124 3696
2125#if EV_PERIODIC_ENABLE 3697#if EV_PERIODIC_ENABLE
3698
3699ecb_noinline
3700static void
3701periodic_recalc (EV_P_ ev_periodic *w)
3702{
3703 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3704 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3705
3706 /* the above almost always errs on the low side */
3707 while (at <= ev_rt_now)
3708 {
3709 ev_tstamp nat = at + w->interval;
3710
3711 /* when resolution fails us, we use ev_rt_now */
3712 if (ecb_expect_false (nat == at))
3713 {
3714 at = ev_rt_now;
3715 break;
3716 }
3717
3718 at = nat;
3719 }
3720
3721 ev_at (w) = at;
3722}
3723
2126/* make periodics pending */ 3724/* make periodics pending */
2127inline_size void 3725inline_size void
2128periodics_reify (EV_P) 3726periodics_reify (EV_P)
2129{ 3727{
2130 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
2131 3729
2132 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3730 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2133 { 3731 {
2134 int feed_count = 0;
2135
2136 do 3732 do
2137 { 3733 {
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2139 3735
2140 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2149 ANHE_at_cache (periodics [HEAP0]); 3745 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 3746 downheap (periodics, periodiccnt, HEAP0);
2151 } 3747 }
2152 else if (w->interval) 3748 else if (w->interval)
2153 { 3749 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3750 periodic_recalc (EV_A_ w);
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]); 3751 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 3752 downheap (periodics, periodiccnt, HEAP0);
2170 } 3753 }
2171 else 3754 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2180 } 3763 }
2181} 3764}
2182 3765
2183/* simply recalculate all periodics */ 3766/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3767/* TODO: maybe ensure that at least one event happens when jumping forward? */
2185static void noinline 3768ecb_noinline ecb_cold
3769static void
2186periodics_reschedule (EV_P) 3770periodics_reschedule (EV_P)
2187{ 3771{
2188 int i; 3772 int i;
2189 3773
2190 /* adjust periodics after time jump */ 3774 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3777 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 3778
2195 if (w->reschedule_cb) 3779 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3780 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 3781 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3782 periodic_recalc (EV_A_ w);
2199 3783
2200 ANHE_at_cache (periodics [i]); 3784 ANHE_at_cache (periodics [i]);
2201 } 3785 }
2202 3786
2203 reheap (periodics, periodiccnt); 3787 reheap (periodics, periodiccnt);
2204} 3788}
2205#endif 3789#endif
2206 3790
2207/* adjust all timers by a given offset */ 3791/* adjust all timers by a given offset */
2208static void noinline 3792ecb_noinline ecb_cold
3793static void
2209timers_reschedule (EV_P_ ev_tstamp adjust) 3794timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 3795{
2211 int i; 3796 int i;
2212 3797
2213 for (i = 0; i < timercnt; ++i) 3798 for (i = 0; i < timercnt; ++i)
… …
2222/* also detect if there was a timejump, and act accordingly */ 3807/* also detect if there was a timejump, and act accordingly */
2223inline_speed void 3808inline_speed void
2224time_update (EV_P_ ev_tstamp max_block) 3809time_update (EV_P_ ev_tstamp max_block)
2225{ 3810{
2226#if EV_USE_MONOTONIC 3811#if EV_USE_MONOTONIC
2227 if (expect_true (have_monotonic)) 3812 if (ecb_expect_true (have_monotonic))
2228 { 3813 {
2229 int i; 3814 int i;
2230 ev_tstamp odiff = rtmn_diff; 3815 ev_tstamp odiff = rtmn_diff;
2231 3816
2232 mn_now = get_clock (); 3817 mn_now = get_clock ();
2233 3818
2234 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3819 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2235 /* interpolate in the meantime */ 3820 /* interpolate in the meantime */
2236 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3821 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2237 { 3822 {
2238 ev_rt_now = rtmn_diff + mn_now; 3823 ev_rt_now = rtmn_diff + mn_now;
2239 return; 3824 return;
2240 } 3825 }
2241 3826
… …
2250 * doesn't hurt either as we only do this on time-jumps or 3835 * doesn't hurt either as we only do this on time-jumps or
2251 * in the unlikely event of having been preempted here. 3836 * in the unlikely event of having been preempted here.
2252 */ 3837 */
2253 for (i = 4; --i; ) 3838 for (i = 4; --i; )
2254 { 3839 {
3840 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 3841 rtmn_diff = ev_rt_now - mn_now;
2256 3842
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3843 diff = odiff - rtmn_diff;
3844
3845 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2258 return; /* all is well */ 3846 return; /* all is well */
2259 3847
2260 ev_rt_now = ev_time (); 3848 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 3849 mn_now = get_clock ();
2262 now_floor = mn_now; 3850 now_floor = mn_now;
… …
2271 else 3859 else
2272#endif 3860#endif
2273 { 3861 {
2274 ev_rt_now = ev_time (); 3862 ev_rt_now = ev_time ();
2275 3863
2276 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3864 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2277 { 3865 {
2278 /* adjust timers. this is easy, as the offset is the same for all of them */ 3866 /* adjust timers. this is easy, as the offset is the same for all of them */
2279 timers_reschedule (EV_A_ ev_rt_now - mn_now); 3867 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2280#if EV_PERIODIC_ENABLE 3868#if EV_PERIODIC_ENABLE
2281 periodics_reschedule (EV_A); 3869 periodics_reschedule (EV_A);
… …
2284 3872
2285 mn_now = ev_rt_now; 3873 mn_now = ev_rt_now;
2286 } 3874 }
2287} 3875}
2288 3876
2289void 3877int
2290ev_loop (EV_P_ int flags) 3878ev_run (EV_P_ int flags)
2291{ 3879{
2292#if EV_FEATURE_API 3880#if EV_FEATURE_API
2293 ++loop_depth; 3881 ++loop_depth;
2294#endif 3882#endif
2295 3883
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3884 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 3885
2298 loop_done = EVUNLOOP_CANCEL; 3886 loop_done = EVBREAK_CANCEL;
2299 3887
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3888 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 3889
2302 do 3890 do
2303 { 3891 {
2304#if EV_VERIFY >= 2 3892#if EV_VERIFY >= 2
2305 ev_verify (EV_A); 3893 ev_verify (EV_A);
2306#endif 3894#endif
2307 3895
2308#ifndef _WIN32 3896#ifndef _WIN32
2309 if (expect_false (curpid)) /* penalise the forking check even more */ 3897 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2310 if (expect_false (getpid () != curpid)) 3898 if (ecb_expect_false (getpid () != curpid))
2311 { 3899 {
2312 curpid = getpid (); 3900 curpid = getpid ();
2313 postfork = 1; 3901 postfork = 1;
2314 } 3902 }
2315#endif 3903#endif
2316 3904
2317#if EV_FORK_ENABLE 3905#if EV_FORK_ENABLE
2318 /* we might have forked, so queue fork handlers */ 3906 /* we might have forked, so queue fork handlers */
2319 if (expect_false (postfork)) 3907 if (ecb_expect_false (postfork))
2320 if (forkcnt) 3908 if (forkcnt)
2321 { 3909 {
2322 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3910 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2323 EV_INVOKE_PENDING; 3911 EV_INVOKE_PENDING;
2324 } 3912 }
2325#endif 3913#endif
2326 3914
2327#if EV_PREPARE_ENABLE 3915#if EV_PREPARE_ENABLE
2328 /* queue prepare watchers (and execute them) */ 3916 /* queue prepare watchers (and execute them) */
2329 if (expect_false (preparecnt)) 3917 if (ecb_expect_false (preparecnt))
2330 { 3918 {
2331 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2332 EV_INVOKE_PENDING; 3920 EV_INVOKE_PENDING;
2333 } 3921 }
2334#endif 3922#endif
2335 3923
2336 if (expect_false (loop_done)) 3924 if (ecb_expect_false (loop_done))
2337 break; 3925 break;
2338 3926
2339 /* we might have forked, so reify kernel state if necessary */ 3927 /* we might have forked, so reify kernel state if necessary */
2340 if (expect_false (postfork)) 3928 if (ecb_expect_false (postfork))
2341 loop_fork (EV_A); 3929 loop_fork (EV_A);
2342 3930
2343 /* update fd-related kernel structures */ 3931 /* update fd-related kernel structures */
2344 fd_reify (EV_A); 3932 fd_reify (EV_A);
2345 3933
2346 /* calculate blocking time */ 3934 /* calculate blocking time */
2347 { 3935 {
2348 ev_tstamp waittime = 0.; 3936 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 3937 ev_tstamp sleeptime = 0.;
2350 3938
3939 /* remember old timestamp for io_blocktime calculation */
3940 ev_tstamp prev_mn_now = mn_now;
3941
3942 /* update time to cancel out callback processing overhead */
3943 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3944
3945 /* from now on, we want a pipe-wake-up */
3946 pipe_write_wanted = 1;
3947
3948 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3949
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3950 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 3951 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 3952 waittime = EV_TS_CONST (MAX_BLOCKTIME);
2360 3953
2361 if (timercnt) 3954 if (timercnt)
2362 { 3955 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3956 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 3957 if (waittime > to) waittime = to;
2365 } 3958 }
2366 3959
2367#if EV_PERIODIC_ENABLE 3960#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 3961 if (periodiccnt)
2369 { 3962 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3963 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3964 if (waittime > to) waittime = to;
2372 } 3965 }
2373#endif 3966#endif
2374 3967
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3968 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3969 if (ecb_expect_false (waittime < timeout_blocktime))
2377 waittime = timeout_blocktime; 3970 waittime = timeout_blocktime;
2378 3971
3972 /* now there are two more special cases left, either we have
3973 * already-expired timers, so we should not sleep, or we have timers
3974 * that expire very soon, in which case we need to wait for a minimum
3975 * amount of time for some event loop backends.
3976 */
3977 if (ecb_expect_false (waittime < backend_mintime))
3978 waittime = waittime <= EV_TS_CONST (0.)
3979 ? EV_TS_CONST (0.)
3980 : backend_mintime;
3981
2379 /* extra check because io_blocktime is commonly 0 */ 3982 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3983 if (ecb_expect_false (io_blocktime))
2381 { 3984 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3985 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3986
2384 if (sleeptime > waittime - backend_fudge) 3987 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3988 sleeptime = waittime - backend_mintime;
2386 3989
2387 if (expect_true (sleeptime > 0.)) 3990 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
2388 { 3991 {
2389 ev_sleep (sleeptime); 3992 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3993 waittime -= sleeptime;
2391 } 3994 }
2392 } 3995 }
2393 } 3996 }
2394 3997
2395#if EV_FEATURE_API 3998#if EV_FEATURE_API
2396 ++loop_count; 3999 ++loop_count;
2397#endif 4000#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 4001 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 4002 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 4003 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
4004
4005 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
4006
4007 ECB_MEMORY_FENCE_ACQUIRE;
4008 if (pipe_write_skipped)
4009 {
4010 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
4011 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
4012 }
2401 4013
2402 /* update ev_rt_now, do magic */ 4014 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 4015 time_update (EV_A_ waittime + sleeptime);
2404 } 4016 }
2405 4017
… …
2414 idle_reify (EV_A); 4026 idle_reify (EV_A);
2415#endif 4027#endif
2416 4028
2417#if EV_CHECK_ENABLE 4029#if EV_CHECK_ENABLE
2418 /* queue check watchers, to be executed first */ 4030 /* queue check watchers, to be executed first */
2419 if (expect_false (checkcnt)) 4031 if (ecb_expect_false (checkcnt))
2420 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2421#endif 4033#endif
2422 4034
2423 EV_INVOKE_PENDING; 4035 EV_INVOKE_PENDING;
2424 } 4036 }
2425 while (expect_true ( 4037 while (ecb_expect_true (
2426 activecnt 4038 activecnt
2427 && !loop_done 4039 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 4040 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 4041 ));
2430 4042
2431 if (loop_done == EVUNLOOP_ONE) 4043 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 4044 loop_done = EVBREAK_CANCEL;
2433 4045
2434#if EV_FEATURE_API 4046#if EV_FEATURE_API
2435 --loop_depth; 4047 --loop_depth;
2436#endif 4048#endif
2437}
2438 4049
4050 return activecnt;
4051}
4052
2439void 4053void
2440ev_unloop (EV_P_ int how) 4054ev_break (EV_P_ int how) EV_NOEXCEPT
2441{ 4055{
2442 loop_done = how; 4056 loop_done = how;
2443} 4057}
2444 4058
2445void 4059void
2446ev_ref (EV_P) 4060ev_ref (EV_P) EV_NOEXCEPT
2447{ 4061{
2448 ++activecnt; 4062 ++activecnt;
2449} 4063}
2450 4064
2451void 4065void
2452ev_unref (EV_P) 4066ev_unref (EV_P) EV_NOEXCEPT
2453{ 4067{
2454 --activecnt; 4068 --activecnt;
2455} 4069}
2456 4070
2457void 4071void
2458ev_now_update (EV_P) 4072ev_now_update (EV_P) EV_NOEXCEPT
2459{ 4073{
2460 time_update (EV_A_ 1e100); 4074 time_update (EV_A_ EV_TSTAMP_HUGE);
2461} 4075}
2462 4076
2463void 4077void
2464ev_suspend (EV_P) 4078ev_suspend (EV_P) EV_NOEXCEPT
2465{ 4079{
2466 ev_now_update (EV_A); 4080 ev_now_update (EV_A);
2467} 4081}
2468 4082
2469void 4083void
2470ev_resume (EV_P) 4084ev_resume (EV_P) EV_NOEXCEPT
2471{ 4085{
2472 ev_tstamp mn_prev = mn_now; 4086 ev_tstamp mn_prev = mn_now;
2473 4087
2474 ev_now_update (EV_A); 4088 ev_now_update (EV_A);
2475 timers_reschedule (EV_A_ mn_now - mn_prev); 4089 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2492inline_size void 4106inline_size void
2493wlist_del (WL *head, WL elem) 4107wlist_del (WL *head, WL elem)
2494{ 4108{
2495 while (*head) 4109 while (*head)
2496 { 4110 {
2497 if (expect_true (*head == elem)) 4111 if (ecb_expect_true (*head == elem))
2498 { 4112 {
2499 *head = elem->next; 4113 *head = elem->next;
2500 break; 4114 break;
2501 } 4115 }
2502 4116
… …
2514 w->pending = 0; 4128 w->pending = 0;
2515 } 4129 }
2516} 4130}
2517 4131
2518int 4132int
2519ev_clear_pending (EV_P_ void *w) 4133ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
2520{ 4134{
2521 W w_ = (W)w; 4135 W w_ = (W)w;
2522 int pending = w_->pending; 4136 int pending = w_->pending;
2523 4137
2524 if (expect_true (pending)) 4138 if (ecb_expect_true (pending))
2525 { 4139 {
2526 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4140 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2527 p->w = (W)&pending_w; 4141 p->w = (W)&pending_w;
2528 w_->pending = 0; 4142 w_->pending = 0;
2529 return p->events; 4143 return p->events;
… …
2556 w->active = 0; 4170 w->active = 0;
2557} 4171}
2558 4172
2559/*****************************************************************************/ 4173/*****************************************************************************/
2560 4174
2561void noinline 4175ecb_noinline
4176void
2562ev_io_start (EV_P_ ev_io *w) 4177ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
2563{ 4178{
2564 int fd = w->fd; 4179 int fd = w->fd;
2565 4180
2566 if (expect_false (ev_is_active (w))) 4181 if (ecb_expect_false (ev_is_active (w)))
2567 return; 4182 return;
2568 4183
2569 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4184 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2570 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4185 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2571 4186
4187#if EV_VERIFY >= 2
4188 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4189#endif
2572 EV_FREQUENT_CHECK; 4190 EV_FREQUENT_CHECK;
2573 4191
2574 ev_start (EV_A_ (W)w, 1); 4192 ev_start (EV_A_ (W)w, 1);
2575 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4193 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
2576 wlist_add (&anfds[fd].head, (WL)w); 4194 wlist_add (&anfds[fd].head, (WL)w);
4195
4196 /* common bug, apparently */
4197 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
2577 4198
2578 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4199 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2579 w->events &= ~EV__IOFDSET; 4200 w->events &= ~EV__IOFDSET;
2580 4201
2581 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
2582} 4203}
2583 4204
2584void noinline 4205ecb_noinline
4206void
2585ev_io_stop (EV_P_ ev_io *w) 4207ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
2586{ 4208{
2587 clear_pending (EV_A_ (W)w); 4209 clear_pending (EV_A_ (W)w);
2588 if (expect_false (!ev_is_active (w))) 4210 if (ecb_expect_false (!ev_is_active (w)))
2589 return; 4211 return;
2590 4212
2591 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4213 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2592 4214
4215#if EV_VERIFY >= 2
4216 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4217#endif
2593 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2594 4219
2595 wlist_del (&anfds[w->fd].head, (WL)w); 4220 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 4221 ev_stop (EV_A_ (W)w);
2597 4222
2598 fd_change (EV_A_ w->fd, 1); 4223 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 4224
2600 EV_FREQUENT_CHECK; 4225 EV_FREQUENT_CHECK;
2601} 4226}
2602 4227
2603void noinline 4228ecb_noinline
4229void
2604ev_timer_start (EV_P_ ev_timer *w) 4230ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
2605{ 4231{
2606 if (expect_false (ev_is_active (w))) 4232 if (ecb_expect_false (ev_is_active (w)))
2607 return; 4233 return;
2608 4234
2609 ev_at (w) += mn_now; 4235 ev_at (w) += mn_now;
2610 4236
2611 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4237 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2612 4238
2613 EV_FREQUENT_CHECK; 4239 EV_FREQUENT_CHECK;
2614 4240
2615 ++timercnt; 4241 ++timercnt;
2616 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4242 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2617 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4243 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
2618 ANHE_w (timers [ev_active (w)]) = (WT)w; 4244 ANHE_w (timers [ev_active (w)]) = (WT)w;
2619 ANHE_at_cache (timers [ev_active (w)]); 4245 ANHE_at_cache (timers [ev_active (w)]);
2620 upheap (timers, ev_active (w)); 4246 upheap (timers, ev_active (w));
2621 4247
2622 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
2623 4249
2624 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4250 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2625} 4251}
2626 4252
2627void noinline 4253ecb_noinline
4254void
2628ev_timer_stop (EV_P_ ev_timer *w) 4255ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
2629{ 4256{
2630 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
2631 if (expect_false (!ev_is_active (w))) 4258 if (ecb_expect_false (!ev_is_active (w)))
2632 return; 4259 return;
2633 4260
2634 EV_FREQUENT_CHECK; 4261 EV_FREQUENT_CHECK;
2635 4262
2636 { 4263 {
… …
2638 4265
2639 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4266 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2640 4267
2641 --timercnt; 4268 --timercnt;
2642 4269
2643 if (expect_true (active < timercnt + HEAP0)) 4270 if (ecb_expect_true (active < timercnt + HEAP0))
2644 { 4271 {
2645 timers [active] = timers [timercnt + HEAP0]; 4272 timers [active] = timers [timercnt + HEAP0];
2646 adjustheap (timers, timercnt, active); 4273 adjustheap (timers, timercnt, active);
2647 } 4274 }
2648 } 4275 }
… …
2652 ev_stop (EV_A_ (W)w); 4279 ev_stop (EV_A_ (W)w);
2653 4280
2654 EV_FREQUENT_CHECK; 4281 EV_FREQUENT_CHECK;
2655} 4282}
2656 4283
2657void noinline 4284ecb_noinline
4285void
2658ev_timer_again (EV_P_ ev_timer *w) 4286ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
2659{ 4287{
2660 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
4289
4290 clear_pending (EV_A_ (W)w);
2661 4291
2662 if (ev_is_active (w)) 4292 if (ev_is_active (w))
2663 { 4293 {
2664 if (w->repeat) 4294 if (w->repeat)
2665 { 4295 {
… …
2678 4308
2679 EV_FREQUENT_CHECK; 4309 EV_FREQUENT_CHECK;
2680} 4310}
2681 4311
2682ev_tstamp 4312ev_tstamp
2683ev_timer_remaining (EV_P_ ev_timer *w) 4313ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
2684{ 4314{
2685 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4315 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
2686} 4316}
2687 4317
2688#if EV_PERIODIC_ENABLE 4318#if EV_PERIODIC_ENABLE
2689void noinline 4319ecb_noinline
4320void
2690ev_periodic_start (EV_P_ ev_periodic *w) 4321ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
2691{ 4322{
2692 if (expect_false (ev_is_active (w))) 4323 if (ecb_expect_false (ev_is_active (w)))
2693 return; 4324 return;
4325
4326#if EV_USE_TIMERFD
4327 if (timerfd == -2)
4328 evtimerfd_init (EV_A);
4329#endif
2694 4330
2695 if (w->reschedule_cb) 4331 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4332 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 4333 else if (w->interval)
2698 { 4334 {
2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 4335 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2700 /* this formula differs from the one in periodic_reify because we do not always round up */ 4336 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 4337 }
2703 else 4338 else
2704 ev_at (w) = w->offset; 4339 ev_at (w) = w->offset;
2705 4340
2706 EV_FREQUENT_CHECK; 4341 EV_FREQUENT_CHECK;
2707 4342
2708 ++periodiccnt; 4343 ++periodiccnt;
2709 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4344 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2710 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4345 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
2711 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4346 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2712 ANHE_at_cache (periodics [ev_active (w)]); 4347 ANHE_at_cache (periodics [ev_active (w)]);
2713 upheap (periodics, ev_active (w)); 4348 upheap (periodics, ev_active (w));
2714 4349
2715 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
2716 4351
2717 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4352 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2718} 4353}
2719 4354
2720void noinline 4355ecb_noinline
4356void
2721ev_periodic_stop (EV_P_ ev_periodic *w) 4357ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
2722{ 4358{
2723 clear_pending (EV_A_ (W)w); 4359 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 4360 if (ecb_expect_false (!ev_is_active (w)))
2725 return; 4361 return;
2726 4362
2727 EV_FREQUENT_CHECK; 4363 EV_FREQUENT_CHECK;
2728 4364
2729 { 4365 {
… …
2731 4367
2732 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4368 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2733 4369
2734 --periodiccnt; 4370 --periodiccnt;
2735 4371
2736 if (expect_true (active < periodiccnt + HEAP0)) 4372 if (ecb_expect_true (active < periodiccnt + HEAP0))
2737 { 4373 {
2738 periodics [active] = periodics [periodiccnt + HEAP0]; 4374 periodics [active] = periodics [periodiccnt + HEAP0];
2739 adjustheap (periodics, periodiccnt, active); 4375 adjustheap (periodics, periodiccnt, active);
2740 } 4376 }
2741 } 4377 }
… …
2743 ev_stop (EV_A_ (W)w); 4379 ev_stop (EV_A_ (W)w);
2744 4380
2745 EV_FREQUENT_CHECK; 4381 EV_FREQUENT_CHECK;
2746} 4382}
2747 4383
2748void noinline 4384ecb_noinline
4385void
2749ev_periodic_again (EV_P_ ev_periodic *w) 4386ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
2750{ 4387{
2751 /* TODO: use adjustheap and recalculation */ 4388 /* TODO: use adjustheap and recalculation */
2752 ev_periodic_stop (EV_A_ w); 4389 ev_periodic_stop (EV_A_ w);
2753 ev_periodic_start (EV_A_ w); 4390 ev_periodic_start (EV_A_ w);
2754} 4391}
… …
2758# define SA_RESTART 0 4395# define SA_RESTART 0
2759#endif 4396#endif
2760 4397
2761#if EV_SIGNAL_ENABLE 4398#if EV_SIGNAL_ENABLE
2762 4399
2763void noinline 4400ecb_noinline
4401void
2764ev_signal_start (EV_P_ ev_signal *w) 4402ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
2765{ 4403{
2766 if (expect_false (ev_is_active (w))) 4404 if (ecb_expect_false (ev_is_active (w)))
2767 return; 4405 return;
2768 4406
2769 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4407 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2770 4408
2771#if EV_MULTIPLICITY 4409#if EV_MULTIPLICITY
2772 assert (("libev: a signal must not be attached to two different loops", 4410 assert (("libev: a signal must not be attached to two different loops",
2773 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4411 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2774 4412
2775 signals [w->signum - 1].loop = EV_A; 4413 signals [w->signum - 1].loop = EV_A;
4414 ECB_MEMORY_FENCE_RELEASE;
2776#endif 4415#endif
2777 4416
2778 EV_FREQUENT_CHECK; 4417 EV_FREQUENT_CHECK;
2779 4418
2780#if EV_USE_SIGNALFD 4419#if EV_USE_SIGNALFD
… …
2827 sa.sa_handler = ev_sighandler; 4466 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 4467 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 4468 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 4469 sigaction (w->signum, &sa, 0);
2831 4470
4471 if (origflags & EVFLAG_NOSIGMASK)
4472 {
2832 sigemptyset (&sa.sa_mask); 4473 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 4474 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 4475 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
4476 }
2835#endif 4477#endif
2836 } 4478 }
2837 4479
2838 EV_FREQUENT_CHECK; 4480 EV_FREQUENT_CHECK;
2839} 4481}
2840 4482
2841void noinline 4483ecb_noinline
4484void
2842ev_signal_stop (EV_P_ ev_signal *w) 4485ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
2843{ 4486{
2844 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
2845 if (expect_false (!ev_is_active (w))) 4488 if (ecb_expect_false (!ev_is_active (w)))
2846 return; 4489 return;
2847 4490
2848 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
2849 4492
2850 wlist_del (&signals [w->signum - 1].head, (WL)w); 4493 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
2878#endif 4521#endif
2879 4522
2880#if EV_CHILD_ENABLE 4523#if EV_CHILD_ENABLE
2881 4524
2882void 4525void
2883ev_child_start (EV_P_ ev_child *w) 4526ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
2884{ 4527{
2885#if EV_MULTIPLICITY 4528#if EV_MULTIPLICITY
2886 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4529 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2887#endif 4530#endif
2888 if (expect_false (ev_is_active (w))) 4531 if (ecb_expect_false (ev_is_active (w)))
2889 return; 4532 return;
2890 4533
2891 EV_FREQUENT_CHECK; 4534 EV_FREQUENT_CHECK;
2892 4535
2893 ev_start (EV_A_ (W)w, 1); 4536 ev_start (EV_A_ (W)w, 1);
… …
2895 4538
2896 EV_FREQUENT_CHECK; 4539 EV_FREQUENT_CHECK;
2897} 4540}
2898 4541
2899void 4542void
2900ev_child_stop (EV_P_ ev_child *w) 4543ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
2901{ 4544{
2902 clear_pending (EV_A_ (W)w); 4545 clear_pending (EV_A_ (W)w);
2903 if (expect_false (!ev_is_active (w))) 4546 if (ecb_expect_false (!ev_is_active (w)))
2904 return; 4547 return;
2905 4548
2906 EV_FREQUENT_CHECK; 4549 EV_FREQUENT_CHECK;
2907 4550
2908 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4551 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
2922 4565
2923#define DEF_STAT_INTERVAL 5.0074891 4566#define DEF_STAT_INTERVAL 5.0074891
2924#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4567#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2925#define MIN_STAT_INTERVAL 0.1074891 4568#define MIN_STAT_INTERVAL 0.1074891
2926 4569
2927static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4570ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2928 4571
2929#if EV_USE_INOTIFY 4572#if EV_USE_INOTIFY
2930 4573
2931/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4574/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2932# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4575# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2933 4576
2934static void noinline 4577ecb_noinline
4578static void
2935infy_add (EV_P_ ev_stat *w) 4579infy_add (EV_P_ ev_stat *w)
2936{ 4580{
2937 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); 4581 w->wd = inotify_add_watch (fs_fd, w->path,
4582 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4583 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4584 | IN_DONT_FOLLOW | IN_MASK_ADD);
2938 4585
2939 if (w->wd >= 0) 4586 if (w->wd >= 0)
2940 { 4587 {
2941 struct statfs sfs; 4588 struct statfs sfs;
2942 4589
… …
2946 4593
2947 if (!fs_2625) 4594 if (!fs_2625)
2948 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4595 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2949 else if (!statfs (w->path, &sfs) 4596 else if (!statfs (w->path, &sfs)
2950 && (sfs.f_type == 0x1373 /* devfs */ 4597 && (sfs.f_type == 0x1373 /* devfs */
4598 || sfs.f_type == 0x4006 /* fat */
4599 || sfs.f_type == 0x4d44 /* msdos */
2951 || sfs.f_type == 0xEF53 /* ext2/3 */ 4600 || sfs.f_type == 0xEF53 /* ext2/3 */
4601 || sfs.f_type == 0x72b6 /* jffs2 */
4602 || sfs.f_type == 0x858458f6 /* ramfs */
4603 || sfs.f_type == 0x5346544e /* ntfs */
2952 || sfs.f_type == 0x3153464a /* jfs */ 4604 || sfs.f_type == 0x3153464a /* jfs */
4605 || sfs.f_type == 0x9123683e /* btrfs */
2953 || sfs.f_type == 0x52654973 /* reiser3 */ 4606 || sfs.f_type == 0x52654973 /* reiser3 */
2954 || sfs.f_type == 0x01021994 /* tempfs */ 4607 || sfs.f_type == 0x01021994 /* tmpfs */
2955 || sfs.f_type == 0x58465342 /* xfs */)) 4608 || sfs.f_type == 0x58465342 /* xfs */))
2956 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4609 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2957 else 4610 else
2958 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4611 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2959 } 4612 }
… …
2980 if (!pend || pend == path) 4633 if (!pend || pend == path)
2981 break; 4634 break;
2982 4635
2983 *pend = 0; 4636 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 4637 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 4638 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4639 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 4640 }
2988 } 4641 }
2989 4642
2990 if (w->wd >= 0) 4643 if (w->wd >= 0)
… …
2994 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4647 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2995 ev_timer_again (EV_A_ &w->timer); 4648 ev_timer_again (EV_A_ &w->timer);
2996 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4649 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2997} 4650}
2998 4651
2999static void noinline 4652ecb_noinline
4653static void
3000infy_del (EV_P_ ev_stat *w) 4654infy_del (EV_P_ ev_stat *w)
3001{ 4655{
3002 int slot; 4656 int slot;
3003 int wd = w->wd; 4657 int wd = w->wd;
3004 4658
… …
3011 4665
3012 /* remove this watcher, if others are watching it, they will rearm */ 4666 /* remove this watcher, if others are watching it, they will rearm */
3013 inotify_rm_watch (fs_fd, wd); 4667 inotify_rm_watch (fs_fd, wd);
3014} 4668}
3015 4669
3016static void noinline 4670ecb_noinline
4671static void
3017infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4672infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3018{ 4673{
3019 if (slot < 0) 4674 if (slot < 0)
3020 /* overflow, need to check for all hash slots */ 4675 /* overflow, need to check for all hash slots */
3021 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4676 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4712 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 4713 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 4714 }
3060} 4715}
3061 4716
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void 4717inline_size ecb_cold
4718void
3095ev_check_2625 (EV_P) 4719ev_check_2625 (EV_P)
3096{ 4720{
3097 /* kernels < 2.6.25 are borked 4721 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */ 4723 */
… …
3104} 4728}
3105 4729
3106inline_size int 4730inline_size int
3107infy_newfd (void) 4731infy_newfd (void)
3108{ 4732{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4733#if defined IN_CLOEXEC && defined IN_NONBLOCK
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4734 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0) 4735 if (fd >= 0)
3112 return fd; 4736 return fd;
3113#endif 4737#endif
3114 return inotify_init (); 4738 return inotify_init ();
… …
3189#else 4813#else
3190# define EV_LSTAT(p,b) lstat (p, b) 4814# define EV_LSTAT(p,b) lstat (p, b)
3191#endif 4815#endif
3192 4816
3193void 4817void
3194ev_stat_stat (EV_P_ ev_stat *w) 4818ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3195{ 4819{
3196 if (lstat (w->path, &w->attr) < 0) 4820 if (lstat (w->path, &w->attr) < 0)
3197 w->attr.st_nlink = 0; 4821 w->attr.st_nlink = 0;
3198 else if (!w->attr.st_nlink) 4822 else if (!w->attr.st_nlink)
3199 w->attr.st_nlink = 1; 4823 w->attr.st_nlink = 1;
3200} 4824}
3201 4825
3202static void noinline 4826ecb_noinline
4827static void
3203stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4828stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3204{ 4829{
3205 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4830 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3206 4831
3207 ev_statdata prev = w->attr; 4832 ev_statdata prev = w->attr;
… …
3238 ev_feed_event (EV_A_ w, EV_STAT); 4863 ev_feed_event (EV_A_ w, EV_STAT);
3239 } 4864 }
3240} 4865}
3241 4866
3242void 4867void
3243ev_stat_start (EV_P_ ev_stat *w) 4868ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3244{ 4869{
3245 if (expect_false (ev_is_active (w))) 4870 if (ecb_expect_false (ev_is_active (w)))
3246 return; 4871 return;
3247 4872
3248 ev_stat_stat (EV_A_ w); 4873 ev_stat_stat (EV_A_ w);
3249 4874
3250 if (w->interval < MIN_STAT_INTERVAL && w->interval) 4875 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3269 4894
3270 EV_FREQUENT_CHECK; 4895 EV_FREQUENT_CHECK;
3271} 4896}
3272 4897
3273void 4898void
3274ev_stat_stop (EV_P_ ev_stat *w) 4899ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3275{ 4900{
3276 clear_pending (EV_A_ (W)w); 4901 clear_pending (EV_A_ (W)w);
3277 if (expect_false (!ev_is_active (w))) 4902 if (ecb_expect_false (!ev_is_active (w)))
3278 return; 4903 return;
3279 4904
3280 EV_FREQUENT_CHECK; 4905 EV_FREQUENT_CHECK;
3281 4906
3282#if EV_USE_INOTIFY 4907#if EV_USE_INOTIFY
… …
3295} 4920}
3296#endif 4921#endif
3297 4922
3298#if EV_IDLE_ENABLE 4923#if EV_IDLE_ENABLE
3299void 4924void
3300ev_idle_start (EV_P_ ev_idle *w) 4925ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3301{ 4926{
3302 if (expect_false (ev_is_active (w))) 4927 if (ecb_expect_false (ev_is_active (w)))
3303 return; 4928 return;
3304 4929
3305 pri_adjust (EV_A_ (W)w); 4930 pri_adjust (EV_A_ (W)w);
3306 4931
3307 EV_FREQUENT_CHECK; 4932 EV_FREQUENT_CHECK;
… …
3310 int active = ++idlecnt [ABSPRI (w)]; 4935 int active = ++idlecnt [ABSPRI (w)];
3311 4936
3312 ++idleall; 4937 ++idleall;
3313 ev_start (EV_A_ (W)w, active); 4938 ev_start (EV_A_ (W)w, active);
3314 4939
3315 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 4940 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3316 idles [ABSPRI (w)][active - 1] = w; 4941 idles [ABSPRI (w)][active - 1] = w;
3317 } 4942 }
3318 4943
3319 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
3320} 4945}
3321 4946
3322void 4947void
3323ev_idle_stop (EV_P_ ev_idle *w) 4948ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3324{ 4949{
3325 clear_pending (EV_A_ (W)w); 4950 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4951 if (ecb_expect_false (!ev_is_active (w)))
3327 return; 4952 return;
3328 4953
3329 EV_FREQUENT_CHECK; 4954 EV_FREQUENT_CHECK;
3330 4955
3331 { 4956 {
… …
3342} 4967}
3343#endif 4968#endif
3344 4969
3345#if EV_PREPARE_ENABLE 4970#if EV_PREPARE_ENABLE
3346void 4971void
3347ev_prepare_start (EV_P_ ev_prepare *w) 4972ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3348{ 4973{
3349 if (expect_false (ev_is_active (w))) 4974 if (ecb_expect_false (ev_is_active (w)))
3350 return; 4975 return;
3351 4976
3352 EV_FREQUENT_CHECK; 4977 EV_FREQUENT_CHECK;
3353 4978
3354 ev_start (EV_A_ (W)w, ++preparecnt); 4979 ev_start (EV_A_ (W)w, ++preparecnt);
3355 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 4980 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3356 prepares [preparecnt - 1] = w; 4981 prepares [preparecnt - 1] = w;
3357 4982
3358 EV_FREQUENT_CHECK; 4983 EV_FREQUENT_CHECK;
3359} 4984}
3360 4985
3361void 4986void
3362ev_prepare_stop (EV_P_ ev_prepare *w) 4987ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3363{ 4988{
3364 clear_pending (EV_A_ (W)w); 4989 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4990 if (ecb_expect_false (!ev_is_active (w)))
3366 return; 4991 return;
3367 4992
3368 EV_FREQUENT_CHECK; 4993 EV_FREQUENT_CHECK;
3369 4994
3370 { 4995 {
… …
3380} 5005}
3381#endif 5006#endif
3382 5007
3383#if EV_CHECK_ENABLE 5008#if EV_CHECK_ENABLE
3384void 5009void
3385ev_check_start (EV_P_ ev_check *w) 5010ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
3386{ 5011{
3387 if (expect_false (ev_is_active (w))) 5012 if (ecb_expect_false (ev_is_active (w)))
3388 return; 5013 return;
3389 5014
3390 EV_FREQUENT_CHECK; 5015 EV_FREQUENT_CHECK;
3391 5016
3392 ev_start (EV_A_ (W)w, ++checkcnt); 5017 ev_start (EV_A_ (W)w, ++checkcnt);
3393 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5018 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
3394 checks [checkcnt - 1] = w; 5019 checks [checkcnt - 1] = w;
3395 5020
3396 EV_FREQUENT_CHECK; 5021 EV_FREQUENT_CHECK;
3397} 5022}
3398 5023
3399void 5024void
3400ev_check_stop (EV_P_ ev_check *w) 5025ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
3401{ 5026{
3402 clear_pending (EV_A_ (W)w); 5027 clear_pending (EV_A_ (W)w);
3403 if (expect_false (!ev_is_active (w))) 5028 if (ecb_expect_false (!ev_is_active (w)))
3404 return; 5029 return;
3405 5030
3406 EV_FREQUENT_CHECK; 5031 EV_FREQUENT_CHECK;
3407 5032
3408 { 5033 {
… …
3417 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3418} 5043}
3419#endif 5044#endif
3420 5045
3421#if EV_EMBED_ENABLE 5046#if EV_EMBED_ENABLE
3422void noinline 5047ecb_noinline
5048void
3423ev_embed_sweep (EV_P_ ev_embed *w) 5049ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
3424{ 5050{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 5051 ev_run (w->other, EVRUN_NOWAIT);
3426} 5052}
3427 5053
3428static void 5054static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 5055embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 5056{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 5057 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 5058
3433 if (ev_cb (w)) 5059 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 5060 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 5061 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 5062 ev_run (w->other, EVRUN_NOWAIT);
3437} 5063}
3438 5064
3439static void 5065static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 5066embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 5067{
… …
3445 EV_P = w->other; 5071 EV_P = w->other;
3446 5072
3447 while (fdchangecnt) 5073 while (fdchangecnt)
3448 { 5074 {
3449 fd_reify (EV_A); 5075 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5076 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 5077 }
3452 } 5078 }
3453} 5079}
3454 5080
5081#if EV_FORK_ENABLE
3455static void 5082static void
3456embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5083embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3457{ 5084{
3458 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5085 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3459 5086
… …
3461 5088
3462 { 5089 {
3463 EV_P = w->other; 5090 EV_P = w->other;
3464 5091
3465 ev_loop_fork (EV_A); 5092 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 5093 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 5094 }
3468 5095
3469 ev_embed_start (EV_A_ w); 5096 ev_embed_start (EV_A_ w);
3470} 5097}
5098#endif
3471 5099
3472#if 0 5100#if 0
3473static void 5101static void
3474embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5102embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3475{ 5103{
3476 ev_idle_stop (EV_A_ idle); 5104 ev_idle_stop (EV_A_ idle);
3477} 5105}
3478#endif 5106#endif
3479 5107
3480void 5108void
3481ev_embed_start (EV_P_ ev_embed *w) 5109ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
3482{ 5110{
3483 if (expect_false (ev_is_active (w))) 5111 if (ecb_expect_false (ev_is_active (w)))
3484 return; 5112 return;
3485 5113
3486 { 5114 {
3487 EV_P = w->other; 5115 EV_P = w->other;
3488 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5116 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
3496 5124
3497 ev_prepare_init (&w->prepare, embed_prepare_cb); 5125 ev_prepare_init (&w->prepare, embed_prepare_cb);
3498 ev_set_priority (&w->prepare, EV_MINPRI); 5126 ev_set_priority (&w->prepare, EV_MINPRI);
3499 ev_prepare_start (EV_A_ &w->prepare); 5127 ev_prepare_start (EV_A_ &w->prepare);
3500 5128
5129#if EV_FORK_ENABLE
3501 ev_fork_init (&w->fork, embed_fork_cb); 5130 ev_fork_init (&w->fork, embed_fork_cb);
3502 ev_fork_start (EV_A_ &w->fork); 5131 ev_fork_start (EV_A_ &w->fork);
5132#endif
3503 5133
3504 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5134 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3505 5135
3506 ev_start (EV_A_ (W)w, 1); 5136 ev_start (EV_A_ (W)w, 1);
3507 5137
3508 EV_FREQUENT_CHECK; 5138 EV_FREQUENT_CHECK;
3509} 5139}
3510 5140
3511void 5141void
3512ev_embed_stop (EV_P_ ev_embed *w) 5142ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
3513{ 5143{
3514 clear_pending (EV_A_ (W)w); 5144 clear_pending (EV_A_ (W)w);
3515 if (expect_false (!ev_is_active (w))) 5145 if (ecb_expect_false (!ev_is_active (w)))
3516 return; 5146 return;
3517 5147
3518 EV_FREQUENT_CHECK; 5148 EV_FREQUENT_CHECK;
3519 5149
3520 ev_io_stop (EV_A_ &w->io); 5150 ev_io_stop (EV_A_ &w->io);
3521 ev_prepare_stop (EV_A_ &w->prepare); 5151 ev_prepare_stop (EV_A_ &w->prepare);
5152#if EV_FORK_ENABLE
3522 ev_fork_stop (EV_A_ &w->fork); 5153 ev_fork_stop (EV_A_ &w->fork);
5154#endif
3523 5155
3524 ev_stop (EV_A_ (W)w); 5156 ev_stop (EV_A_ (W)w);
3525 5157
3526 EV_FREQUENT_CHECK; 5158 EV_FREQUENT_CHECK;
3527} 5159}
3528#endif 5160#endif
3529 5161
3530#if EV_FORK_ENABLE 5162#if EV_FORK_ENABLE
3531void 5163void
3532ev_fork_start (EV_P_ ev_fork *w) 5164ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
3533{ 5165{
3534 if (expect_false (ev_is_active (w))) 5166 if (ecb_expect_false (ev_is_active (w)))
3535 return; 5167 return;
3536 5168
3537 EV_FREQUENT_CHECK; 5169 EV_FREQUENT_CHECK;
3538 5170
3539 ev_start (EV_A_ (W)w, ++forkcnt); 5171 ev_start (EV_A_ (W)w, ++forkcnt);
3540 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5172 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
3541 forks [forkcnt - 1] = w; 5173 forks [forkcnt - 1] = w;
3542 5174
3543 EV_FREQUENT_CHECK; 5175 EV_FREQUENT_CHECK;
3544} 5176}
3545 5177
3546void 5178void
3547ev_fork_stop (EV_P_ ev_fork *w) 5179ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
3548{ 5180{
3549 clear_pending (EV_A_ (W)w); 5181 clear_pending (EV_A_ (W)w);
3550 if (expect_false (!ev_is_active (w))) 5182 if (ecb_expect_false (!ev_is_active (w)))
3551 return; 5183 return;
3552 5184
3553 EV_FREQUENT_CHECK; 5185 EV_FREQUENT_CHECK;
3554 5186
3555 { 5187 {
… …
3563 5195
3564 EV_FREQUENT_CHECK; 5196 EV_FREQUENT_CHECK;
3565} 5197}
3566#endif 5198#endif
3567 5199
5200#if EV_CLEANUP_ENABLE
5201void
5202ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5203{
5204 if (ecb_expect_false (ev_is_active (w)))
5205 return;
5206
5207 EV_FREQUENT_CHECK;
5208
5209 ev_start (EV_A_ (W)w, ++cleanupcnt);
5210 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
5211 cleanups [cleanupcnt - 1] = w;
5212
5213 /* cleanup watchers should never keep a refcount on the loop */
5214 ev_unref (EV_A);
5215 EV_FREQUENT_CHECK;
5216}
5217
5218void
5219ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
5220{
5221 clear_pending (EV_A_ (W)w);
5222 if (ecb_expect_false (!ev_is_active (w)))
5223 return;
5224
5225 EV_FREQUENT_CHECK;
5226 ev_ref (EV_A);
5227
5228 {
5229 int active = ev_active (w);
5230
5231 cleanups [active - 1] = cleanups [--cleanupcnt];
5232 ev_active (cleanups [active - 1]) = active;
5233 }
5234
5235 ev_stop (EV_A_ (W)w);
5236
5237 EV_FREQUENT_CHECK;
5238}
5239#endif
5240
3568#if EV_ASYNC_ENABLE 5241#if EV_ASYNC_ENABLE
3569void 5242void
3570ev_async_start (EV_P_ ev_async *w) 5243ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
3571{ 5244{
3572 if (expect_false (ev_is_active (w))) 5245 if (ecb_expect_false (ev_is_active (w)))
3573 return; 5246 return;
3574 5247
5248 w->sent = 0;
5249
3575 evpipe_init (EV_A); 5250 evpipe_init (EV_A);
3576 5251
3577 EV_FREQUENT_CHECK; 5252 EV_FREQUENT_CHECK;
3578 5253
3579 ev_start (EV_A_ (W)w, ++asynccnt); 5254 ev_start (EV_A_ (W)w, ++asynccnt);
3580 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5255 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
3581 asyncs [asynccnt - 1] = w; 5256 asyncs [asynccnt - 1] = w;
3582 5257
3583 EV_FREQUENT_CHECK; 5258 EV_FREQUENT_CHECK;
3584} 5259}
3585 5260
3586void 5261void
3587ev_async_stop (EV_P_ ev_async *w) 5262ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
3588{ 5263{
3589 clear_pending (EV_A_ (W)w); 5264 clear_pending (EV_A_ (W)w);
3590 if (expect_false (!ev_is_active (w))) 5265 if (ecb_expect_false (!ev_is_active (w)))
3591 return; 5266 return;
3592 5267
3593 EV_FREQUENT_CHECK; 5268 EV_FREQUENT_CHECK;
3594 5269
3595 { 5270 {
… …
3603 5278
3604 EV_FREQUENT_CHECK; 5279 EV_FREQUENT_CHECK;
3605} 5280}
3606 5281
3607void 5282void
3608ev_async_send (EV_P_ ev_async *w) 5283ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
3609{ 5284{
3610 w->sent = 1; 5285 w->sent = 1;
3611 evpipe_write (EV_A_ &async_pending); 5286 evpipe_write (EV_A_ &async_pending);
3612} 5287}
3613#endif 5288#endif
… …
3650 5325
3651 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3652} 5327}
3653 5328
3654void 5329void
3655ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
3656{ 5331{
3657 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3658
3659 if (expect_false (!once))
3660 {
3661 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3662 return;
3663 }
3664 5333
3665 once->cb = cb; 5334 once->cb = cb;
3666 once->arg = arg; 5335 once->arg = arg;
3667 5336
3668 ev_init (&once->io, once_cb_io); 5337 ev_init (&once->io, once_cb_io);
… …
3681} 5350}
3682 5351
3683/*****************************************************************************/ 5352/*****************************************************************************/
3684 5353
3685#if EV_WALK_ENABLE 5354#if EV_WALK_ENABLE
5355ecb_cold
3686void 5356void
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5357ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
3688{ 5358{
3689 int i, j; 5359 int i, j;
3690 ev_watcher_list *wl, *wn; 5360 ev_watcher_list *wl, *wn;
3691 5361
3692 if (types & (EV_IO | EV_EMBED)) 5362 if (types & (EV_IO | EV_EMBED))
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 5405 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 5406#endif
3737 5407
3738#if EV_IDLE_ENABLE 5408#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 5409 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 5410 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 5411 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 5412 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 5413#endif
3744 5414
3745#if EV_FORK_ENABLE 5415#if EV_FORK_ENABLE
… …
3798 5468
3799#if EV_MULTIPLICITY 5469#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 5470 #include "ev_wrap.h"
3801#endif 5471#endif
3802 5472
3803#ifdef __cplusplus
3804}
3805#endif
3806

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